JP4879426B2 - Impact crusher wear amount detection method and impact crusher - Google Patents

Description

【０１２２】
ＳＴ９：次いで、交換稼働時間記憶テーブル９４４の更新を行う。具体的には、算出した実摩耗係数Ｋｈ１，Ｋｄ１、交換稼働時間Ｔｄ２，Ｔｈ１′を交換稼働時間記憶テーブル９４４に記憶する。また、交換稼働時間Ｔｄ２，Ｔｈ１′が比較され、早く訪れる交換稼働時間Ｔｈ１′を、次回交換稼働時間Ｔｎｅｘｔとして記憶する。
さらに、４）式の途中で算出された(Ｌ３−(Ｌ４−Ｋｈ１(Ｔ４−Ｔ３)))の値は、打撃板３２２の稼働時間Ｔ３での摩耗量Ｌｄ３であるとともに、反発板３３の実際の全体摩耗量Ｌ４＝Ｌｈ４に基づく略実際の値であり、この摩耗量Ｌｄ３を必要に応じて部位別摩耗量記憶テーブル９４３に記憶してもよい。
【０１２３】
以上により、次回交換される反発板３３の交換稼働時間Ｔｈ１′は、自身の実際の全体摩耗量Ｌ４＝Ｌｈ４に基づいて改めて再推定されることになり、その信頼性が向上する。また、さらにその次に交換される打撃板３２２においても、交換稼働時間Ｔｄ２は、実際の全体摩耗量Ｌ３，Ｌ４および実摩耗係数Ｋｈ１に基づく実摩耗係数Ｋｄ１を用いて推定されているから、その信頼性も向上する。
【０１２４】
また、続いて行われる破砕作業中において、摩耗情報としては、次回交換稼働時間Ｔｎｅｘｔとして交換稼働時間Ｔｈ１′を表示し、次回の交換対象部位として「反発板」を表示し、交換内容として「要反転」を表示し、打撃板３２２および反発板３３の推定摩耗量としては、現在の稼働時間Ｔｈｒと、前述した実摩耗係数Ｋｄ１，Ｋｈ１との積から算出した値を表示すればよい。
【０１２５】
〔９．摩耗量検出および交換稼働時間の推定−３〕
続いて、図１９に示すように、稼働時間Ｔｈｒが交換稼働時間Ｔｈ１′に達し、反発板３３の摩耗量Ｌｈが摩耗限界値Ｌｈｍａｘに達したと判断され、反発板３３を交換した場合について説明する。この場合にも、反発板３３のゼロ点位置が変わるために、図１５、図１６のフローに基づいて、再度ゼロ点位置の判定および隙間調整を行うとともに、再び図１８のフローに基づいて、以下の通りに、摩耗量検出および交換稼働時間の推定を行う。
【０１２６】
図１８のＳＴ１：ここでは、稼働時間Ｔｈｒは、Ｔｈ１′と同じであり、また、Ｔｈ１′に達するまでに、稼働時間Ｔｈｒ＝Ｔ５の時点で１回のゼロ点位置の判定を行っていれば（純粋に隙間Ｃを調整するためのゼロ点位置の判定であって、交換作業を伴わないゼロ点位置の判定のこと）、６回目となる今回は、Ｔｈｒ＝Ｔｈ１′＝Ｔ６である。
【０１２７】
ＳＴ２：反発板３３のゼロ点位置を第２パルスカウンタＰＣｈ２のパルス数Ｍ６として検出し、ゼロ点位置記憶テーブル９４１に記憶する。
ＳＴ３、ＳＴ４：このパルス数Ｍ６から全体摩耗量Ｌ６を計算し、部位別摩耗量記憶テーブル９４３に記憶する。
ＳＴ５：履歴情報記憶テーブル９４５を参照して反発板３３のみが交換されていると判断し、ＳＴ１３に進む。
【０１２８】
ＳＴ１３：交換稼働時間Ｔｈ１′に達して反発板３３を交換した今回の場合には、反発板３３の摩耗量は「０」であるから、部位別摩耗量記憶テーブル９４３の反発板３３自身の摩耗量Ｌｄが記憶される領域には「０」を記憶する。また、パルス数Ｍ６から計算された全体摩耗量Ｌ６はそのまま、交換していない打撃板３２２の摩耗量Ｌｄ６であり、その記憶領域にはＬ６＝Ｌｄ６を記憶する。
【０１２９】
ＳＴ１４：この際、打撃板３２２の摩耗量Ｌｄ６は、現在試用中の打撃板３２２による摩耗量であり、図１９に点線で示した先程の実摩耗係数Ｋｄ１に基づく摩耗量とは微妙に異なる可能性がある。このような場合には、先に推定した打撃板３２２の交換稼働時間Ｔｄ２にずれが生じる。このため、本実施形態では、以下の５）式を用いることで、実際の全体摩耗量Ｌ６から実摩耗係数Ｋｄ２を算出し、この実摩耗係数Ｋｄ２および摩耗限界値Ｌｄｍａｘから、打撃板３２２の交換稼働時間Ｔｄ２′を改めて算出して推定する。
【０１３０】
Ｋｄ２ ＝ Ｌ６/(Ｔ６−Ｔ４) … ５）
【０１３１】
ＳＴ１５：一方、交換された反発板３３に関しては、全く摩耗していない状態であり、新たに次の交換稼働時間Ｔｈ２を算出して推定する。しかし、この場合には、理論摩耗係数Ｋｈ０や当初の反発板３３の実摩耗係数Ｋｈ１を用いず、以下の６）式から、実摩耗係数Ｋｈ２を算出し、この実摩耗係数Ｋｈ２および摩耗限界値Ｌｈｍａｘから、交換稼働時間Ｔｈ２を算出して推定する。
【０１３２】

【０１３３】
ＳＴ９：次いで、交換稼働時間記憶テーブル９４４の更新を行う。具体的には、算出した新たな実摩耗係数Ｋｈ２，Ｋｄ２、交換稼働時間Ｔｄ２′，Ｔｈ２を交換稼働時間記憶テーブル９４４記憶する。また、交換稼働時間Ｔｄ２′，Ｔｈ２が比較され、早く訪れるる交換稼働時間Ｔｄ２′を、次回交換稼働時間Ｔｎｅｘｔとして記憶する。
さらに、６）式の途中で算出された(Ｌ５−(Ｌ６−Ｋｄ２(Ｔ６−Ｔ５)))の値は、反発板３３の稼働時間Ｔ５での摩耗量Ｌｈ５であるとともに、打撃板３２２の実際の全体摩耗量Ｌ６＝Ｌｄ６に基づく略実際の値であり、この摩耗量Ｌｈ５を必要に応じて部位別摩耗量記憶テーブル９４３に記憶してもよい。
【０１３４】
以上により、次回交換される打撃板３２２の交換稼働時間Ｔｄ２′は、自身の実際の全体摩耗量Ｌ６＝Ｌｈ６に基づいて改めて再推定されているので、その信頼性がさらに向上する。また、さらにその次に交換される反発板３３においても、交換稼働時間Ｔｈ２は、実際の全体摩耗量Ｌ５，Ｌ６および実摩耗係数Ｋｄ２に基づく実摩耗係数Ｋｈ２を用いて推定されているから、その信頼性も一層向上する。
【０１３５】
また、続いて行われる破砕作業中において、摩耗情報としては、次回交換稼働時間Ｔｎｅｘｔとして交換稼働時間Ｔｄ２′を表示し、次回の交換対象部位として「打撃板」を表示し、交換内容として「要取替」を表示し、打撃板３２２および反発板３３の推定摩耗量としては、現在の稼働時間Ｔｈｒと、最新の実摩耗係数Ｋｄ２，Ｋｈ２との積から算出した値を表示すればよい。
【０１３６】
そして、次回以降においても、打撃板３２２および反発板３３のうち、一方を交換した場合には、以上に説明したフロー（図１８参照）に基づいて摩耗量の検出および交換稼働時間の推定を行えばよい。
こうすることにより、一方を交換する度に、次回の他方の交換稼働時間は、自身の実際の摩耗量を勘案しながら見直されることになり、交換時期がより正確に推定されるようになる。
【０１３７】
〔実施形態の効果〕
このような本実施形態によれば、以下のような効果がある。
(１)クラッシャ３０では、打撃板３２２および反発板３３の摩耗量を検出するにあたり、これらが破砕作業に供されていない稼働時間Ｔ０での反発板３３のゼロ点位置と、所定の稼働時間Ｔ１〜Ｔ６…経過後のゼロ点位置との差から、打撃板３２２および反発板３３の全体摩耗量Ｌ１〜Ｌ６…を計算によって定量的に検出するため、全体摩耗量Ｌ１〜Ｌ６…を精度よく検出できる。従って、これらの全体摩耗量Ｌ１〜Ｌ６…から、打撃板３２２および反発板３３の交換稼働時間Ｔｈ１′，Ｔｈ２，Ｔｄ２，Ｔｄ２′…も計算によって算出でき、それらの交換時期を正確に推定できる。
【０１３８】
(２)また、本実施形態では、反発板３３のゼロ点位置の判定は自動的に行われるので、その判定に費やされる時間を短縮できる。このため、摩耗量検出のためにクラッシャ３０を長時間停止させる必要がなく、破砕作業の作業効率が大幅に低下するのを防止できる。
【０１３９】
(３)交換稼働時間Ｔｄ１に達したときなどには、ゼロ点位置の判定を行うことで、全体摩耗量Ｌ４を反発板３３の摩耗量Ｌｈ４として検出できるとともに、この全体摩耗量Ｌ４を含んだ前記３）式から得られる実摩耗係数Ｋｈ１により、継続して使用される反発板３３の交換稼働時間Ｔｈ１′を推定できる。
また、実摩耗係数Ｋｈ１から、稼働時間Ｔ３での打撃板３２２の摩耗量Ｌｄ３を検出できるとともに、この摩耗量Ｌｄ３を含んだ前記４）式から実摩耗係数Ｋｄ２を算出することで、この実摩耗係数Ｋｄ１に基づいて、新たに交換された打撃板３２２の次の交換稼働時間Ｔｄ２を推定できる。
さらに、交換稼働時間Ｔｈ１′＝Ｔ６に達した場合でも、打撃板３２２の摩耗量Ｌｄ６と、反発板３３の稼働時間Ｔ５での摩耗量Ｌｈ５とを個別に検出することにより、継続して使用される打撃板３２２の交換稼働時間Ｔｄ２′と、新たに交換された反発板３３の交換稼働時間Ｔｈ２とを個別に推定できる。
従って、打撃板３２２と反発板３３とで交換時期が異なる場合でも、継続して使用される一方の次回の交換時期と、新たに交換された他方の次回の交換時期とを確実に推定できる。
【０１４０】
(４)交換稼働時間Ｔｄ１では、全体摩耗量Ｌ４を検出する際に履歴情報記憶テーブル９４５を参照し、打撃板３２２や反発板３３の交換状況を確認するため、交換稼働時間Ｔｄ１で打撃板３２２が交換されていることを容易に判断でき、この時点での全体摩耗量Ｌ４が反発板３３のみの摩耗量Ｌｈ４であることを誤りなく判断できる。
同様に、交換稼働時間Ｔｈ１′においても、履歴情報記憶テーブル９４５を参照することにより、検出された全体摩耗量Ｌ６が打撃板３２２のみの摩耗量Ｌｄ６であることを誤りなく判断できる。
従って、この点でも、継続あるいは新たに交換して用いられる打撃板３２２おび反発板３３の次回の交換時期を正確に推定することができる。
【０１４１】
(５)また、交換稼働時間Ｔｄ１においては、交換された新たな打撃板３２２の摩耗量Ｌｄは「０」であるから、検出された全体摩耗量Ｌ４はそのまま反発板３３の摩耗量Ｌｈ４となり、この摩耗量Ｌｈ４をより実測に近い値で検出でき、この摩耗量Ｌｈ４に基づく実摩耗係数Ｋｄ１，Ｋｈ１の信憑性、ひいては交換稼働時間Ｔｈ１′，Ｔｄ２の信頼性を向上させることができる。
同様に、交換稼働時間Ｔｈ１′においても、交換された新たな反発板３３の摩耗量Ｌｈは「０」であるから、検出された全体摩耗量Ｌ６はそのまま打撃板３２２の摩耗量Ｌｄ６となり、この摩耗量Ｌｄ６をより実測に近い値で検出でき、この摩耗量Ｌｄ６に基づく実摩耗係数Ｋｄ２，Ｋｈ２の信憑性、ひいては交換稼働時間Ｔｄ２′，Ｔｈ２の信頼性を向上させることができる。
【０１４２】
(６)本実施形態では、交換稼働時間Ｔｄ１，Ｔｈ１′が訪れる毎に、打撃板３２２および反発板３３の摩耗係数Ｋｄ，Ｋｈが見直され、次の交換時期を常に最新の実摩耗係数Ｋｄ１，Ｋｄ２，Ｋｈ１，Ｋｈ２で推定するため、より正確に推定できる。
また、実摩耗係数Ｋｄ１，Ｋｄ２，Ｋｈ１，Ｋｈ２をデータとして蓄積し、これらを平均化することで、交換時期を推定するための摩耗係数Ｋｄ，Ｋｈを決定することもでき、こうすることにより、交換回数を重ねる毎に摩耗係数Ｋｄ，Ｋｈの正確さが増し、やはり、交換時期の推定をより精度よく実施できる。
【０１４３】
(７)本実施形態のクラッシャ３０では、次回交換稼働時間Ｔｎｅｘｔ、累積された現在の稼働時間Ｔｈｒ、交換対象部位、交換内容、各部位毎に推定した摩耗量を入力パネル５０５の液晶表示装置等に表示させるので、作業者がこれらの摩耗情報から打撃板３２２および反発板３３の摩耗状況や交換時期を容易に知ることができ、それらを摩耗限界値Ｌｄｍａｘ，Ｌｈｍａｘを超えて使用するのを防止できる。
また、稼働時間Ｔｈｒが次回交換稼働時間Ｔｎｅｘｔに達したときには、警報装置５０２が作動するので、限界を超えての打撃板３２２および反発板３３の使用をより確実に防止できる。
【０１４４】
(８)打撃板３２２および反発板３３の摩耗量Ｌｄ，Ｌｈが摩耗限界値Ｌｄｍａｘ，Ｌｈｍａｘに達したか否かは、入力パネル５０５から入力された摩耗限界値Ｌｄｍａｘ，Ｌｈｍａｘと摩耗係数Ｋｄ，Ｋｈとから交換稼働時間Ｔｄ，Ｔｈを算出し、この交換稼働時間Ｔｄ，Ｔｈに基づく次回交換稼働時間Ｔｎｅｘｔと実際の稼働時間Ｔｈｒとを、摩耗限界判定手段９３５で自動的に比較することで判定されるから、比較判定結果に基づいたより緻密で信頼性の高い判断を実現でき、交換時期に達したことを確実に判断できる。
【０１４５】
(９)打撃板３２２および反発板３３の各摩耗限界値Ｌｄｍａｘ，Ｌｈｍａｘは、部位別摩耗限界値記憶テーブル９４２内に個別に記憶されているため、図９に示すように、各摩耗係数Ｋｄ，Ｋｈを用いて打撃板３２２や反発板３３の交換稼働時間Ｔｄ，Ｔｈを個別に算出できる。そして、それぞれの交換稼働時間Ｔｄ，Ｔｈのうち、早く訪れる方を次回交換稼働時間Ｔｎｅｘｔとし、この次回交換稼働時間Ｔｎｅｘｔと実際の稼働時間Ｔｈｒとを比較判定することにより、打撃板３２２の交換時期と反発板３３の交換時期とが異なる場合でも、それぞれが交換時期に達したことを確実に判断できる。
【０１４６】
なお、本発明は、前記実施形態に限定されるものではなく、本発明の目的を達成できる他の構成等を含み、以下に示すような変形等も本発明に含まれる。
例えば、前記実施形態では、打撃板３２２および反発板３３の摩耗量Ｌｄ，Ｌｈが摩耗限界値Ｌｄｍａｘ，Ｌｈｍａｘに達したか否かを、稼働時間Ｔｈｒが次回交換稼働時間Ｔｎｅｘｔ（交換稼働時間Ｔｄ，Ｔｈ）に達したか否かで判断していたが、摩耗係数Ｋ（Ｋｄ０，Ｋｄ１，Ｋｄ２，Ｋｈ０，Ｋｈ１，Ｋｈ２）を用いることで、稼働時間Ｔｈｒの経過に伴う打撃板３２２および反発板３３の摩耗量Ｌｄ，Ｌｈを逐一算出し、この算出した摩耗量Ｌｄ，Ｌｈが摩耗限界値Ｌｄｍａｘ，Ｌｈｍａｘに達したか否かで判断してもよく、実質的には前記実施形態と同じことである。
【０１４７】
前記実施形態では、稼働時間Ｔｈｒが交換稼働時間Ｔｄ，Ｔｈに達した場合には、直ぐに打撃板３２２や反発板３３を交換したが、直ぐに交換せずに、一旦ゼロ点位置の判定を行って全体摩耗量Ｌを検出（１回目）し、この後に交換して再度ゼロ点位置の判定および全体摩耗量Ｌの検出（２回目）を行ってもよい。
こうすることで、２回目の全体摩耗量Ｌの検出から、交換していない一方の摩耗量を略実測値として検出でき、この実測値と１回目の全体摩耗量Ｌとの差から、交換した他方の摩耗量をも略実測値として検出でき、摩耗係数Ｋをより実体に近い値で、かつ簡単なロジックで算出できる。
【０１４８】
また、打撃板３２２と反発板３３とで交換稼働時間Ｔｄ，Ｔｈが同じとなり、両方を同時に交換した場合には、前記３）〜６）式を用いて実摩耗係数Ｋｄ１，Ｋｄ２，Ｋｈ０，Ｋｈ１，Ｋｈ２等を算出することができないため、次回の交換稼働時間の算出には、一度用いた直近の摩耗係数Ｋを再度用いてもよい。
あるいは、前述したように、一方の交換の前後に、２回の摩耗量検出を行って両方の摩耗量を略実測値として検出し、この値から最新の摩耗係数Ｋを算出して用いてもよい。
【０１４９】
前記実施形態では、打撃板３２２および反発板３３の両方の全体摩耗量Ｌを検出したが、反発板３３のゼロ点位置を全く破砕作業に供されない（摩耗しない）部分に当接させて判定する場合では、稼働前後の反発板３３のゼロ点位置の差から反発板３３のみの摩耗量を検出してもよい。
打撃板３２２に関しては、反発板３３と打撃板３２２との摩耗が同じ程度に進むのであれば、反発板３３の摩耗量Ｌｈが摩耗限界値Ｌｈｍａｘに達しとき、同時に打撃板３２２の摩耗量Ｌｄも摩耗限界値Ｌｄｍａｘに達したと見なせばよく、それらを同時に交換すればよい。そして、このような場合には、部位別摩耗限界値記憶テーブル９４２に、反発板３３の摩耗限界値Ｌｈｍａｘのみを記憶させておけばよい。
打撃板３２２および反発板３３の摩耗の進行度合いが異なり、交換時期が明らかに異なる場合には、進行度合いの違いを係数化し、この係数を用いることにより、反発板３３の摩耗量Ｌｈから打撃板３２２の摩耗量Ｌｄを算出して推測すればよく、それぞれの交換時期を個別に推定できる。
【０１５０】
前記実施形態では、例えば、稼働時間Ｔｈｒが交換稼働時間Ｔｄ１に達する間には、稼働時間Ｔ１，Ｔ２，Ｔ３の時点でゼロ点位置の判定（交換作業を伴わないゼロ位置の判定）が行われているが、このゼロ点位置の判定は、摩耗によって拡がった隙間Ｃを調整するためであった。
しかし、このようなゼロ点位置の判定を、隙間調整の要、不要に関係なく、破砕作業の始業時や終業時に定期的に行い、その度に稼働時間Ｔｈｒ、ゼロ点位置、および全体摩耗量Ｌを、ゼロ点位置記憶テーブル９４１、部位別摩耗量記憶テーブル９４３にそれぞれ記憶してもよい。
【０１５１】
前記実施形態の移動式破砕機１は、クローラ式の走行部１０を備えた自走式であったが、クローラ式に限らず車輪式であってもよく、また、自走式に限らず、牽引式であってもよい。
【０１５２】
そして、本発明のインパクトクラッシャは、移動式破砕機１に搭載されるものに限定されず、例えば、破砕場に置かれた定置式であってもよい。
【０１５３】
インパクトクラッシャの打撃部としては、前記実施形態のような横方向に連続した板状の打撃板３２２に限定されず、例えば、横方向に沿って複数組み合わされたブロック状のもので構成されていてもよい。
【０１５４】
インパクトクラッシャとしては、３つの反発板を備えたタイプに限らず、１つあるいは２つであってもよく、４つ以上備えたタイプであってもよい。また、複数の反発板を備えたタイプでは、各々を個別に隙間調整できる構成であってもよく、任意の２つ以上（前記実施形態の第２、第３反発板３３２，３３３参照）を連結させてもよい。
【０１５５】
その他、前記実施形態では、入力パネル５０５が表示手段、摩耗限界値入力手段、および履歴情報入力手段を兼用していたが、これらを別々の装置で構成してもよい。
【図面の簡単な説明】
【図１】本発明の一実施形態に係るインパクトクラッシャを搭載した移動式破砕機を示す側面図である。
【図２】前記移動式破砕機を被破砕物の投入側から見た図である。
【図３】前記移動式破砕機を示す平面図である。
【図４】前記インパクトクラッシャを示す側面図である。
【図５】前記インパクトクラッシャの内部構造の一部を示す断面図である。
【図６】前記インパクトクラッシャの隙間調整装置を示す断面図である。
【図７】前記インパクトクラッシャのブロック図である。
【図８】コントローラを示すブロック図である。
【図９】ゼロ点位置記憶テーブルを示す図である。
【図１０】部位別摩耗限界値記憶テーブルを示す図である。
【図１１】部位別摩耗量記憶テーブルを示す図である。
【図１２】交換稼働時間記憶テーブルを示す図である。
【図１３】履歴情報記憶テーブルを示す図である。
【図１４】メインのフローチャートである。
【図１５】ゼロ点位置の判定および隙間調整のフローチャートである。
【図１６】ゼロ点位置の判定および隙間調整のフローチャートの続きである。
【図１７】ゼロ点位置の判定および隙間調整を説明するための図である。
【図１８】摩耗量検出および交換稼働時間推定のフローチャートである。
【図１９】摩耗状況を示すタイムチャートである。
【図２０】摩耗限界を判定するフローチャートである。
【符号の説明】
３０…インパクトクラッシャ、３２…回転体であるロータ、３３，３３１，３３２，３３３…反発板、３２２…打撃部である打撃板、５０５…摩耗限界値入力手段、および履歴情報入力手段である入力パネル、９２２…ゼロ点位置記憶手段、９２６…履歴情報記憶手段、９３１…ゼロ点位置判定手段、９３３…摩耗量計算手段、９３５…摩耗限界判定手段、９４２…部位別摩耗限界値記憶テーブル、Ｃ，Ｃ１，Ｃ２，Ｃ３…隙間、Ｌ…摩耗量である全体摩耗量、Ｌｄ…打撃部の摩耗量、Ｌｈ…反発板の摩耗量、Ｌｄｍａｘ，Ｌｈｍａｘ…摩耗限界値。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an impact crusher wear amount detection method and an impact crusher. More specifically, the present invention relates to a method for detecting the wear amount of a striking part and / or a rebound plate constituting an impact crusher, and to realize this detection method. The present invention relates to an impact crusher having various means.
[0002]
[Background]
Conventionally, it is known to crush an object such as a large concrete block, asphalt block, or natural stone such as andesite from a building demolition site or a quarry with an impact crusher.
Such an impact crusher hits the object to be crushed by the striking plate (striking part) of the rotating rotor (rotating body), or collides the object to be crushed by this striking with the rebound plate. Crush the crushed material.
[0003]
Therefore, when the impact crusher is operated for a long time and the crushing operation is performed, the striking plate that strikes the object to be crushed and the repulsion plate that collides with the object to be crushed gradually wear due to the impact at that time. The wear of the striking plate and the rebound plate is regularly inspected visually, and if it is determined that the wear is significant, they are replaced with new ones.
[0004]
[Problems to be solved by the invention]
However, since the judgment of the amount of wear by visual inspection of the worker varies, the crushing operation is not continued or the wear limit has not been reached even after the replacement timing of the striking plate and the rebound plate. May be replaced.
And in such a case, unexpected replacement work of the striking plate or the rebound plate occurs, and the crushing operation is interrupted, or conversely, a sufficiently usable striking plate or rebound plate is wasted. Such a situation occurs.
In addition, when the amount of wear is visually detected by an operator, it is necessary to stop the operation of the crusher for a long time, which causes a problem that the work efficiency of the crushing work is deteriorated.
[0005]
An object of the present invention is to provide an impact crusher wear amount detection method and an impact crusher capable of accurately detecting the wear amount of a striking plate and a rebound plate and accurately estimating the replacement time thereof.
[0006]
[Means for solving the problems and effects]
In the impact crusher wear amount detecting method according to claim 1 of the present invention, a striking portion is attached to a rotating body, a repelling plate is provided, and a position at which the striking portion tip and the repelling plate are in contact with each other or slightly separated from each other is determined. After determining the zero point position, separating the repelling plate by a predetermined amount from the striking portion and operating the impact crusher, the striking portion tip and the repelling plate are in contact with or slightly separated from the zero point position of the repelling plate. Judging from the position, based on the difference between the zero point position before the operation and the zero point position after the operation, the wear amount of the hitting portion and / or the rebound plate is detected. At this time, the rotating body is rotated in a state in which the repelling plate is in contact with the rotating body that has stopped rotating, and the striking portion comes into contact with the repelling plate so that the rotating body cannot rotate. Then, the repelling plate is moved in a direction away from the rotating body, and the position where the repelling plate has moved until the rotating body can rotate is determined as the zero point position. It is characterized by that.
Here, “before operation” refers to the stage where the crushing operation and the rebound plate have not been carried out after the hitting portion and the rebound plate have been installed, and “after operation” refers to the crushing operation after attaching the striking portion and the repulsion plate. The stage after the work is performed. The same applies to the following.
[0007]
According to such a wear amount detection method, the striking part and the repulsion plate are not subjected to crushing operation, the zero point position of the rebound plate before operation, and after operation, the crushing operation causes wear to them. Because the amount of wear of one or both is quantitatively detected by calculation, etc., from the difference from the zero point position of the rebound plate, unlike the conventional case, there is no need to visually check the amount of wear and the amount of wear is more It is detected accurately and the replacement time is accurately estimated.
In addition, if the zero point position of the rebound plate is automatically determined, the time spent for the determination work is shortened, so there is no need to stop the crusher for a long time, greatly increasing the work efficiency of the crushing work. There is no risk of decline.
[0008]
In addition, the replacement | exchange of a striking part and a repulsion board includes the case where the part used for actual crushing work is changed by using it, for example, in addition to the case where it replaces | exchanges for a completely different new article.
In addition, the worn state of the hitting portion and / or the rebound plate when replaced may be completely worn, as in the case of a new product, as in the case where there is enough wear allowance for crushing operation. It may be already worn to some extent. However, when it is in a worn state, it is necessary to grasp the remaining wear allowance in advance.
[0009]
A wear amount detection method for an impact crusher according to a second aspect of the present invention is the method for detecting the wear amount of an impact crusher according to the first aspect, wherein the wear amount of the striking part and the rebound plate is individually detected.
In the wear amount detection method of the present invention, the wear amount of the striking part and the wear amount of the rebound plate are individually detected, so that each replacement time is individually estimated from each wear amount, and the replacement time of the striking part is determined. This is effective when the time for replacing the rebound plate is different.
[0010]
The impact crusher wear amount detection method according to claim 3 is the impact crusher wear amount detection method according to claim 1 or 2, wherein the wear amount is detected in consideration of replacement history of the striking portion and the rebound plate. It is characterized by doing.
For example, when the replacement timing of the striking portion and the replacement timing of the rebound plate are different, at the time when either one is replaced, only the other wear amount is detected as the total wear amount of the striking portion and the rebound plate. The system does not know whether the wear amount of the other side is the wear amount of the striking part or the rebound plate, and the replacement time of the other used continuously or one of the newly replaced ones There is a possibility of estimating the time incorrectly.
On the other hand, in the wear amount detection method of the present invention, since the wear amount is detected in consideration of the replacement history of the striking portion and the rebound plate, the detected wear amount is that of the striking portion or that of the rebound plate. It can be reliably determined on the system from the replacement history, and there is no fear that the replacement time is erroneously estimated.
[0011]
The impact crusher wear amount detection method according to claim 4 of the present invention is the impact crusher wear amount detection method according to any one of claims 1 to 3, wherein the impact crusher wear amount detection method includes: When either one of these is replaced, the zero point position of the rebound plate is determined from the position where the tip of the striking part and the rebound plate are in contact with each other or slightly separated from each other, and the other wear amount is detected from this zero point position. Features.
In such a wear amount detection method, the wear amount becomes zero by exchanging one of the striking part and the repulsion plate. Therefore, by determining the zero point position immediately after the exchange, the other wear is detected. The amount is detected at a value closer to the actual measurement.
[0012]
The impact crusher according to claim 5 of the present invention is Case and A rotating body having a striking portion, and a repelling plate arranged with a gap with respect to the striking portion, A clearance adjustment device that is attached to the case and attached to the repulsion plate, and moves the repulsion plate to a state of approaching or separating from the rotating body, Zero point position determining means for determining the zero point position of the repelling plate with respect to the striking portion, zero point position storing means for storing the zero point position of the repelling plate, and calculating the wear amount of the striking portion and / or the repelling plate Wear amount calculation means to detect The zero point position determination means includes a levitation detection sensor that detects that the gap adjusting device is lifted from the case when the repulsion plate is biased in a direction away from the rotating body. It is characterized by.
[0013]
According to such an impact crusher, the wear amount detection method of claim 1 is realized by performing the following steps, and the object of the present invention is achieved.
That is, the step of determining the zero point position of the rebound plate before and after operation by the zero point position determination unit, the step of storing the determined zero point position by the zero point position storage unit, and the wear amount calculation unit The step of calculating the difference between the zero point positions before and after the operation called from the zero point position storage means and detecting the wear amount after the operation for a predetermined time is performed.
Then, based on the detected amount of wear, for example, by generating and displaying wear information that informs the replacement time, or issuing a warning, the replacement time is surely recognized by the operator.
[0014]
The impact crusher according to claim 6 is the impact crusher according to claim 5, wherein the wear limit value input means for inputting the wear limit value, the striking portion and / or the rebound plate have reached the wear limit value. And a wear limit judging means for judging the above.
In such an impact crusher, the wear limit determination means automatically compares and determines whether or not the wear state of the striking part or the rebound plate has reached the wear limit value input from the wear limit value input means. Thus, it becomes possible to make a more precise and reliable determination based on the comparison determination result, and to accurately determine that the replacement time has been reached.
[0015]
The impact crusher according to claim 7 is the impact crusher according to claim 6, wherein each wear limit value of the hitting portion and the rebound plate is individually set, or one of the wear limit values is set. A separate wear limit value storage table is provided.
In such an impact crusher, the wear amount calculation means and the wear limit determination means described above individually calculate and detect the wear amount of the striking part and the rebound plate, and store each wear amount and the wear limit value for each part. By comparing and judging each wear limit value in the table, even if the replacement time of the striking part and the replacement time of the rebounding plate are different, it is ensured that the hitting part and rebounding plate in use have reached the replacement time. Judgment becomes possible.
[0016]
The impact crusher according to claim 8 is the impact crusher according to any one of claims 5 to 7, and stores history information input means for inputting replacement history information of the striking part and the rebound plate, and stores the replacement history information. And a history information storage means.
In such an impact crusher, the replacement history information input from the history information input means is stored in the history information storage means. The replacement history information includes, for example, the replacement time of the striking part and the replacement time of the rebound plate. Is used to accurately determine whether the detected wear amount is that of the striking portion or the rebound plate, and the wear amount detection method described in claim 3 is reliably realized. It becomes like this.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an entire mobile crusher 1 equipped with an impact crusher 30 according to the present embodiment, and FIG. 2 is a diagram of the mobile crusher 1 viewed from the input side of an object to be crushed, FIG. These are top views of the mobile crusher 1. FIG.
[0018]
[1. (Overall explanation of mobile crusher)
In FIG. 1 thru | or FIG. 3, the mobile crusher 1 is the structure which mounted the working machine 3 and the power part 4 on the base part 2. As shown in FIG.
The base unit 2 includes a pair of crawler type traveling units 10 for self-propelling in the work site, and a frame 20 to which the traveling unit 10 is attached and the working machine 3 and the power unit 4 are mounted. It has.
The work machine 3 includes an impact crusher (hereinafter referred to as a crusher) 30 mounted substantially in the center of the base unit 2, a crushed material supply unit 40 that supplies the crushed material to the crusher 30, and a crushed crushed material. And a discharge belt conveyor 50 that discharges the toner.
The power unit 4 is a power source such as the traveling unit 10, the crusher 30 and the discharge belt conveyor 50, and includes an engine (not shown), a hydraulic pump 6 (FIG. 7) driven by the engine, and an operation from the hydraulic pump 6. The main valve 8 (FIG. 7) etc. which control oil are provided. The base unit 2 is provided with a traveling lever 4A for performing traveling operation and turning operation of the mobile crusher 1, and an upper control box (not shown) in which traveling indicators are arranged. In the vicinity of the unit, a side control box (not shown) for operating the work machine 3 is provided.
Further, the crusher 30 side of the power unit 4 is a first work floor 28 formed on the upper surface of the power unit 4. On the first work floor 28, the operation of the traveling lever 4 </ b> A and the crusher Various operations such as 30 maintenance operations and inspection operations are performed.
[0019]
Below, for convenience of explanation, the discharge belt conveyor 50 side of the mobile crusher 1 is defined as the front side (right side in FIG. 1), and the material supply unit 40 side is defined as the rear side (left side in FIG. 1). Each part will be described with the direction orthogonal to the direction (left-right direction in FIG. 2) as the horizontal direction.
[0020]
The traveling unit 10 is provided on a crawler frame 22 that forms a part of the frame 20, and includes a hydraulic motor 11 on the front side of the crawler frame 22. An endless crawler belt 13 driven by the hydraulic motor 11 is wound around the sprocket 11A of the hydraulic motor 11 and the idler 12 on the other end side. The hydraulic motor 11 is driven by hydraulic pressure from the hydraulic pump of the power unit 4 via a control valve (not shown).
[0021]
The frame 20 includes a pair of the crawler frames 22 and a main frame 21 to which these crawler frames 22 are attached. A flat crushing device mounting portion 211 (FIG. 4) is provided on a part of the main frame 21, and the crusher 30 is mounted on the crushing device mounting portion 211. On the main frame 21, a hopper frame 23 for placing the object supply unit 40 and an engine frame 24 for placing the power unit 4 are fixed.
[0022]
As shown in FIGS. 4 and 5, the crusher 30 includes a case 31 having an inlet 31 </ b> A for an object to be crushed, and a rotor having a rotor body 321 and a striking plate (striking part) 322 in the case 31. (Rotating body) 32 and a repulsion plate 33 positioned with clearances C1, C2, C3 from the rotation trajectory A at the tip of the striking plate 322 are disposed.
In such a crusher 30, the object to be crushed introduced from the introduction port 31 </ b> A is crushed by being struck by the rotating striking plate 322, or being blown at the time of striking and colliding with the repulsion plate 33. Is discharged onto the discharge belt conveyor 50 from the discharge port 31B.
[0023]
The crushed object supply unit 40 includes a hopper 41 on which the crushed object is loaded, and a grizzly (sieving) feeder 42 disposed below the hopper 41 with a slight gap.
The hopper 41 is supported on the hopper frame 23 of the frame 20 via the four-side support portions 411, and greatly expands upward.
The feeder 42 is a vibration type having a vibration device 421 driven by hydraulic pressure from the power unit 4 and is supported on the hopper frame 23 via a plurality of coil springs 422 so as not to contact the hopper 41. Vibrate to feed the object to be crushed to the crusher 30 side. At this time, as shown by a two-dot chain line in FIG. 4, the end portions of the hopper 41 and the feeder 42 are squeezed into the inlet 31 </ b> A of the crusher 30, and the object to be crushed is reliably put into the crusher 30. .
The feeder 42 has a function of supplying a material to be crushed to the crusher 30 and a function of selecting a small input that does not need to be crushed by a comb-shaped grizzly portion 423 (FIG. 3) and sifting it downward. . The sieved input falls on another belt conveyor 43 shown in FIGS. 1 to 3 or is discharged, or falls on the discharge belt conveyor 50 by switching a damper (not shown), together with the crushed material. Discharged.
[0024]
The discharge belt conveyor 50 has a base end side (left side in FIG. 1) in the transfer direction located below the frame 20 and is discharged as needed from the crusher 30 discharged from the discharge port 31B of the crusher 30. The discharged material (same as the input material) from the grizzly part 423 is transferred to the tip side (right side in FIG. 1). Further, the discharge belt conveyor 50 has a three-stage folding structure, and the discharge height at the front end side is sufficiently secured, so that the operation can be reliably performed without a secondary belt conveyor. The discharge belt conveyor 50 is also driven by the hydraulic pressure from the power unit 4.
In the middle of the discharge belt conveyor 50, a magnetic separator 51 is arranged so as to be supported by the frame 20, and a metal material such as a reinforcing bar, which is produced when the concrete block is crushed, is magnetically attached with a permanent magnet. Discharge.
[0025]
[2. (Description of crusher)
Hereinafter, the crusher 30 will be described in detail with reference to FIGS. 4 and 5.
The case 31 of the crusher 30 is a split type having a fixed case 70 fixed to the frame 20 (FIG. 1) and a movable case 80 attached to the upper side of the fixed case 70. And a repulsion plate 33 is attached to the movable case 80 as shown in FIG.
[0026]
The fixed case 70 has a box shape with the entire upper side opened and the above-described discharge port 31 </ b> B on the bottom side, and both sides in the lateral direction are fixed case side surfaces 72. Each of the fixed case side surface portions 72 is provided with two inspection doors 720 and 721 (only one fixed case side surface portion 72 is illustrated), and by opening these inspection doors 720 and 721, It is possible to check the inside of the case 31 or check the clogging condition of the crushed material at the discharge port 31B on the bottom side of the case 31. However, the size, number, etc. of the inspection doors may be arbitrarily determined for the implementation.
[0027]
On the other hand, the movable case 80 has a lid shape so as to cover the upper opening of the fixed case 70, and forms a part of the insertion port 31A at the rear edge of the movable case 80 itself. Both sides of the movable case 80 in the horizontal direction are movable case side surfaces 82. Each movable case side surface portion 82 is positioned outside the fixed case side surface portion 72 of the fixed case 70, and the lower edge 821 portion of the movable case side surface portion 82 is above the fixed case side surface portion 72. The edge 724 portion is provided by swallowing. That is, in the case 31 of the present embodiment, the upper edge 724 portion and the lower edge 821 portion are overlapped in the horizontal direction, and a dividing line SS of the fixed case 70 and the movable case 80 is provided along this overlapping portion. ing.
[0028]
The fixed case 70 and the movable case 80 are connected by a rotation mechanism 39 provided on the upper side opposite to the insertion port 31 </ b> A, and the movable case is centered on the rotation axis of the rotation mechanism 39. 80 is pivoted upward with respect to the fixed case 70 and deeply sinks downward until the lower edge 821 contacts the contact portion 725. That is, the state shown by the solid line in FIG. 4 is the working posture of the movable case 80, and the crushing work is performed in this posture. In addition, as shown by a two-dot chain line, the movable case 80 is open when the movable case 80 is in a maintenance posture, and the repulsion plates 33 (331, 332, 333) exposed by opening are replaced (replaced, reversed). Work is performed. The state in which the movable case 80 is sunk is the transporting posture of the movable case 80. By sinking, the height of the entire case 31 is lowered, which limits the height when the mobile crusher 1 is transported by trailer. It corresponds.
[0029]
Further, the fixed case 70 and the movable case 80 are connected by a hydraulic cylinder 394 slightly closer to the insertion port 31 </ b> A than the rotation mechanism 39. The hydraulic cylinder 394 is operated when the movable case 80 is rotated, and assists the rotating operation of the movable case 80 that is heavy. Such a hydraulic cylinder 394 is arranged such that the upper side is a cylinder and the lower side is a rod, preventing dust and the like from accumulating on the rod side end of the cylinder, and improving the durability of packing and the like. It has been.
[0030]
The rotor 32 of the crusher 30 is supported by bearings (not shown) outside the case 31 at both ends in the lateral direction, and includes a pulley 34 at one end. A hydraulic motor 35 indicated by a two-dot chain line is disposed outside the case 31, and a V belt 37 is wound around the pulley 36 and the pulley 34 of the hydraulic motor 35. That is, the rotor 32 is rotationally driven by the hydraulic motor 35 via the V belt 37. The hydraulic motor 35 is driven by the hydraulic pressure from the hydraulic pump of the power unit 4 via the control valve 8A in the main valve 8.
[0031]
The striking plate 322 of the rotor 32 is continuously provided over a range slightly narrower than the lateral width of the case 31 along the lateral direction (axial direction of the rotor main body 321), and a plurality of striking plates 322 at equal intervals in the circumferential direction of the rotor main body 321 ( In the present embodiment, there are four projections). Further, the striking plate 322 is detachable, and can be used by being reversed or replaced with a new striking plate according to its wear state.
[0032]
Next, in FIG. 5, the repulsion plate 33 of the crusher 30 includes a first repulsion plate 331, a second repulsion plate 332, and a third repulsion plate in order from the insertion port 31 </ b> A (FIG. 4) along the rotation direction of the rotor 32. 333.
[0033]
The first repulsion plate 331 is larger than the others, and can reliably receive a large object to be crushed at the beginning. A pair of locking projections 331A are provided on the back side of the first repulsion plate 331, and the locking projections 331A are locked between the locking portions 334A on the lower side of the first arm 334. At the same time, it is held by a screw-type fixing device 334B provided in one of the locking portions 334A and a stopper 334C provided on the end portion in the lateral direction. A plurality of such first rebound plates 331 are arranged in close contact with each other in the lateral direction, and by releasing the fixing tool 334B and the stopper 334C, each can be inserted and removed in the lateral direction, and the worn state Depending on the situation, it can be reversed or replaced with a new rebound plate.
[0034]
The second and third repulsion plates 332 and 333 have the same shape, and between the locking portions 335A provided on the lower side of the second arm 335 via the locking projections 332A and 333A on the back side, respectively. It is held by the fixture 335B and the stopper 335C. These second and third repulsion plates 332 and 333 are also insertable / removable with respect to the second arm 335, and are exchanged according to the wear state. However, the second and third repulsion plates 332 and 333, which are not so large, are not used by being reversed because wear due to the crushing operation occurs uniformly, but as with the first repulsion plate 331, they are reversed. It may be configured to be possible.
[0035]
A pair of first and second arms 334 and 335 are arranged side by side in the lateral direction, and are connected integrally by connecting plates 334D and 335D and connecting bars 334E and 335E, respectively. Each second arm 335 is disposed inside the pair of first arms 334. The upper sides of the first and second arms 334 and 335 are pivotally supported on the upper side of the case 31 by a rotation shaft 38. On the other hand, the lower sides of the first and second arms 334 and 335 are suspended by the first and second gap adjusting devices 60 (61 and 62) that are retractable and attached to the connecting bars 334E and 335E. Yes.
[0036]
Such first and second gap adjusting devices 61 and 62 have a structure that expands and contracts by driving the hydraulic motor 64 of the drive mechanism 63 on the upper end side. As will be described later, a nut-like member and a bolt-like member are used. A screw-type mechanical moving mechanism 69 (FIG. 6) having the above is adopted. By extending and contracting the first and second gap adjusting devices 61 and 62, the first and second arms 334 and 335 rotate about the rotation shaft 38, and the rotation trajectory A and the first to the first to first striking plates 322 are rotated. It is possible to adjust the sizes of the gaps C1, C2, and C3 between the third repulsion plates 331 to 333.
[0037]
The second gap adjustment device 62 adjusts the gap C3 in the third repulsion plate 333 among the second and third repulsion plates 332 and 333. This is because adjusting the gap C3 is important in determining the final particle size of the crushed material. For this reason, the adjustment of the gap C2 in the second repulsion plate 332 provided on the same second arm 335 is automatically performed by adjusting the gap C3 from the positional relationship between the second and third repulsion plates 332 and 333. Complete.
[0038]
The first arm 334 is provided with a bending type restriction link 336 in order to restrict the amount of rotation of the first gap adjusting device 61 in the extending direction. According to the restriction link 336, excessive extension of the first gap adjusting device 61 is prevented, and the amount of rotation of the first arm 334 is restricted. On the other hand, the rotation amount of the second arm 335 is restricted by the contact with the first arm 334.
Further, in the first arm 334, a liner 337 that can be inserted and removed is attached above the first repulsion plate 331 to protect the first arm 334 from an object to be crushed.
[0039]
In the above crusher 30, one side of the fixed case 70 on the side surface portion 72 of the fixed case 70 is on the upper side of the pulley cover 75 (FIG. 1) and at the same height level as the first work floor 28. A floor 29 is provided. The second working floor 29 is formed of a scaffold plate-like member extending in the front-rear direction of the fixed case side surface portion 72 and is fixed to the fixed case side surface portion 72 by bolting or the like. Further, the front end side of the second work floor 29 is close to the first work floor 28, and as shown in FIG. 3, each work floor 28, 29 forms an angle of a crusher 30 having a substantially rectangular plane. It is formed along two sides so that it can be easily moved between the working floors 28 and 29.
[0040]
From such second work floor 29, when the movable case 80 is in the maintenance posture, it can easily enter the crusher 30 across the fixed case 70, and the front end side of the hopper 41 and the feeder 42. By straddling the (input port 31A side), it is possible to enter the hopper 41 and easily move onto the feeder 42.
[0041]
[3. Detailed description of gap adjustment device)
Hereinafter, the gap adjusting device 60 will be described in detail with reference to FIG.
Since both the first and second gap adjusting devices 61 and 62 have the same configuration, they will be described as the gap adjusting device 60 here.
5 and 6, the gap adjusting device 60 includes the above-described drive mechanism 63 and a rod-like advance / retreat portion 65 driven by the drive mechanism 63.
[0042]
The drive mechanism 63 is mounted on a mounting seat 805 that is bolted to the upper surface of the movable case 80 via a pair of disk springs 806 that are stacked one above the other, and a receiving base 631 on the disk spring 806. It has. The receiving base 631 is provided with insertion holes 631A concentric with the insertion holes 81A and 805A formed in the movable case 80 and the mounting seat 805, and the advancing / retreating portion 65 is inserted into these insertion holes 81A, 805A and 631A. Yes.
[0043]
The drive mechanism 63 includes an exterior case 632 provided on the receiving base 631. The exterior case 632 is provided with a housing portion 632A for housing the upper end side of the advance / retreat portion 65, and in the housing portion 632A, as shown by a two-dot chain line in the cross-sectional view taken along the line VI-VI in FIG. A cylindrical gear 633 having a hollow portion 633A having a hexagonal cross section is rotatably arranged. As shown in this cross-sectional view, a flat hexagonal fitting portion 661 provided in the advance / retreat portion 65 is fitted in the hollow portion 633A of the cylindrical gear 633, and the cylindrical gear 633 rotates. By doing so, the advance / retreat part 65 side also rotates.
[0044]
The cylindrical gear 633 meshes with a smaller-diameter gear 634, and the gear 634 is connected to the rotating shaft of the hydraulic motor 64. Accordingly, the advance / retreat unit 65 is rotationally driven by the hydraulic motor 64. At this time, the rotation of the hydraulic motor 64 is decelerated between the gear 634 and the cylindrical gear 633 and transmitted to the advance / retreat unit 65. The meshing portion between the cylindrical gear 633 and the gear 634 is lubricated with lubricating oil injected into the outer case 632. Further, as shown in FIG. 7, each hydraulic motor 64 is operated by the hydraulic pressure from the hydraulic pump 6 supplied via the control valves 8B and 8C in the main valve 8.
[0045]
Furthermore, the exterior case 632 is attached to the attachment seat 805, that is, the movable case 80 via an attachment piece 635 having an L-shaped longitudinal section provided on the lower surface thereof. At this time, the horizontal portion of the attachment piece 635 is sandwiched between a pair of upper and lower rubber members 636 and 637 and attached using a sleeve 638 and a bolt 639 that penetrate the attachment pieces 635 and the rubber members 636 and 637. .
In FIG. 6, only one mounting portion having the rubber members 636 and 637 is shown in FIG. 6, but in actuality, the positions facing each other across the rotation center of the cylindrical gear 633 (advancing / retracting portion 65). The drive mechanism 63 is attached to the movable case 80 at two locations.
[0046]
On the other hand, the advancing / retracting portion 65 includes a nut member 66 attached to the movable case 80 side and a bolt member 67 having a lower end side attached to the connecting bars 334E and 335E on the repulsion plate 33 side, and is engraved in the bolt member 67. The threaded portion 67A is screwed into the threaded portion 66A engraved on the inner surface of the nut member 66.
[0047]
On the upper side of the nut member 66, the above-described fitting portion 661 is provided, and as shown in the cross-sectional view in FIG. 6, the plane hexagonal operation portion 662 that is slightly smaller than the fitting portion 661 is provided. However, it is attached by welding of another member. The operation portion 662 can be fitted with a hand tool such as a box wrench by removing the detection plate 691 bolted to the upper portion thereof, and can rotate the nut member 66 by manual operation. .
[0048]
The bolt member 67 is attached to the connecting bars 334E and 335E via the joint member 671 on the lower end side, and is inserted into the case 31 of the advance / retreat portion 65 between the joint member 671 and the upper mounting seat 805. A cover member 68 that covers the portion is provided.
[0049]
The cover member 68 has a structure in which a lower cylindrical portion 681 fixed to the joint member 671 and an upper bellows-like stretchable portion 682 fixed to the mounting seat 805 are joined. The upper end side of the cylindrical portion 681 that advances and retreats together with the bolt member 67 is in close contact with the outer peripheral surface of the nut member 66 via an annular sealing material 683. The lengths of the cylindrical portion 681 and the bolt member 67 are set to be substantially the same. Within a range (stroke) in which the bolt member 67 can advance and retreat, the sealing material 683 is always in close contact with the outer peripheral surface of the nut member 66, Dust and water are prevented from entering the portion 681.
[0050]
Such advancing / retreating portion 65 is inserted into the movable case 80 and the insertion holes 81A, 805A, 631A of the drive mechanism 63, and its own weight is received by the receiving base 631 of the drive mechanism 63 via the nylon pad 631B. For this reason, the advancing / retreating portion 65 is not fixed to any part in the insertion direction, and a large object to be crushed collides with the repulsion plate 33 vigorously, or the repulsion plate 33 and the striking plate 322 At the time of an abnormality such as clogging, the advance / retreat portion 65 as a whole floats upward so that the fitting portion 661 moves away from the cradle 631.
The advancing / retreating portion 65 that has lifted up returns downward due to its own weight, the weight of the repulsion plate 33, the weight of the first and second arms 334, 335, and the like. It is designed to be absorbed.
Further, the lifting of the advancing / retreating portion 65 also occurs when determining the zero point position of the repulsion plate 33, which will be described later.
[0051]
According to the gap adjusting device 60 described above, when the nut member 66 of the advance / retreat portion 65 is rotated by the hydraulic motor 64, the bolt member 67 attached to the repulsion plate 33 side does not rotate but the nut member 66 rotates. The bolt member 67 advances and retreats steplessly according to the amount and direction of rotation, and the repulsion plate 33 moves (rotates) via the first and second arms 334 and 335 as the bolt member 67 advances and retreats. The gaps C1 to C3 with the 322 are adjusted steplessly.
The gap adjusting device 60 is also used for detecting the wear amount of the striking plate 322 and the repelling plate 33 accompanied by the determination of the zero point position of the repelling plate 33. Here, the zero point position is a position where the repulsion plates 331 and 333 are in contact with or slightly separated from the tip of the striking plate 322 (the rotation trajectory A).
[0052]
[4. (Configuration required for zero point position determination, clearance adjustment, and wear detection)
In the crusher 30 of this embodiment, as shown in the main flowchart of FIG. 14, by determining the zero point positions of the first repulsion plate 331 and the third repulsion plate 333 (step (ST) 1), the impact The wear amount of the plate 322, the first repulsion plate 331, and the third repulsion plate 333 is detected and the replacement operation time is estimated (ST2). Next, in the normal flow, after determining the zero point position, the gaps C1 to C3 are adjusted (ST3), and then the crushing operation is performed (ST4). Then, during the crushing operation, it is monitored whether the wear amount of the striking plate 322, the first rebound plate 331, and the third rebound plate 333 has reached the wear limit (ST5). At this time, in this embodiment, whether or not the wear limit has been reached is determined by whether or not the operating time of the crusher 30 has reached the replacement operating time. If the wear limit is added, the necessary part is replaced, and the process returns to ST1 again to determine the zero point position.
[0053]
The determination of the zero point position and the subsequent gap adjustment performed when detecting the wear amount are performed by controlling the gap adjusting device 60. Therefore, first, the configuration necessary for the control of the gap adjusting device 60, the determination of the zero point position, the gap adjustment, and the wear amount detection will be described in detail with reference to FIG. 6, FIG. 7, and FIG.
[0054]
In the description of the wear amount detection, the related determination of the zero point position, and the description of the gap adjustment, the first rebound plate 331 and the third rebound plate 333 (second repulsion plate 332) have a description content. Since it is basically the same, hereinafter, the first to third repulsion plates 331 to 333 will be described as the repulsion plate 33, and the gaps C1 to C3 will be described as the gap C.
[0055]
6 and 7, the gear 634 constituting the drive mechanism 63 of the gap adjusting device 60 is provided with a disk-shaped detection board 692 having a plurality of notches in the circumferential direction. A repulsion plate side rotation amount detection sensor 693 is provided that detects a notch in the rotating detection panel 692 and outputs a detection signal to the controller 7 each time the notch is detected.
Further, in the gap adjusting device 60, the position of the detection plate 691 provided at the upper end of the bolt member 67 is detected by a floating detection sensor 694 attached via a bracket 807, and the advance / retreat unit 65 is Detects floating. A detection signal from the levitation detection sensor 694 is also output to the controller 7.
[0056]
Further, a protrusion (dog) 323 corresponding to the position where the striking plate 322 is arranged is provided on the rotating shaft portion of the rotor 32, and is fixed to the case 31, a bearing or the like by an appropriate fixing means in the vicinity of the protrusion 323. A rotor-side rotation amount detection sensor 324 is provided. The rotor-side rotation amount detection sensor 324 detects the protrusion 323 that rotates together with the rotor 32, and outputs a detection signal to the controller 7 each time the protrusion 323 is detected.
[0057]
The controller 7 includes a CPU, a memory, a wear amount detection program (software) stored in the memory, a pulse counter, a timer, and the like.
This controller 7 includes a start switch 501 for starting a series of operations up to the determination of the zero point position, the detection of the wear amount, and the clearance adjustment, and an alarm composed of a buzzer, a light, etc. for notifying an abnormality during the operation. An apparatus 502 is connected to an input panel (also serving as a wear limit value input means and a history information input means) 505 with a liquid crystal display device provided so that numerical values can be input by a numeric keypad operation.
[0058]
Such a controller 7 executes a program based on detection signals from the sensors 324, 693, 694, signals from the connected start switch 501, and the input panel 505, and controls the control valves 8A-8C. A control signal is output to perform a switching operation to control the hydraulic motor 35 on the rotor 32 side and the hydraulic motor 64 of each gap adjusting device 60, and when an abnormality occurs, an alarm signal is output to activate the alarm device 502.
[0059]
Here, the control valves 8A to 8C of the main valve 8 are not illustrated in detail. For example, the control valves 8A to 8C are 4-port 3-position valves, and position switching solenoids that are operated by a control signal from the controller 7 are provided. Have.
[0060]
The controller 7 will be described in detail based on FIG.
The controller 7 includes an input unit 91 to which various detection signals and the like are input, a storage unit 92 configured from a ROM, a RAM, and the like, a CPU 93 that performs arithmetic processing based on a program stored in the storage unit 92, And an output unit 94 for outputting a control signal based on data in the storage unit 92 and a calculation result in the CPU 93.
[0061]
Among these, the storage means 92 includes a program storage means 921 in which a program for calculation by the CPU 93 is stored, a zero point position storage means 922 for storing the zero point position of the repulsion plate 33, a striking plate 322 and a repulsion plate 33. Part-specific wear limit value storage means 923 for storing individual wear limit values for each part, part-specific wear amount storage means 924 for storing the wear amount for each part, and replacement operation time for each part are stored. A storage area including a replacement operation time storage unit 925 and a history information storage unit 926 in which the history information of each replaced part is stored.
[0062]
The program in the program storage unit 921 causes the controller 7 to function as the next unit.
That is, the program according to the present embodiment, as described in the CPU 93 in FIG. 8, causes the controller 7 to determine the zero point position determining means 931 and the striking plate 322 for determining the zero point position of the repulsion plate 33. The gap adjustment means 932 for adjusting the gap between the impact plate 33 and the impact plate 33, the wear amount calculation means 933 for calculating the wear amount of the impact plate 322 and the impact plate 33, and the replacement operation time of the impact plate 322 and the impact plate 33 are as follows. The replacement operation time estimation means 934 for estimating functions as wear limit determination means 935 for determining whether or not the striking plate 322 and the rebound plate 33 have reached the wear limit during the crushing operation.
[0063]
In the zero point position storage means 922, as shown in FIG. 9, the operation time Thr of the crusher 30 at the time when the determination of the zero point position of the repulsion plate 33 and the zero point position are performed, and the zero point position storage table 941 Is remembered.
In the part-specific wear limit value storage means 923, as shown in FIG. 10, the part-specific wear limit values Ldmax and Lhmax are stored in the part-specific wear limit value storage table 942. At this time, the wear limit value is input from the input panel 505 shown in FIG. 7 every time the striking plate 322 and the repelling plate 33 are replaced. However, when the crusher 30 is shipped from the factory, the striking plate 322 and the repelling plate 33 are input. If it is installed, it is input in advance at the factory.
In the part-by-part wear storage means 924, as shown in FIG. 11, the total wear amount L of the striking plate 322 and the rebound plate 33 according to the operating time Thr, and the wear quantities Ld and Lh for each part are classified by part. It is stored in the wear amount storage table 943.
In the replacement operation time storage unit 925, as shown in FIG. 12, the next replacement operation time Tnext, the wear coefficient K, and the replacement operation times Td and Th for each part are stored in the replacement operation time storage table 944.
In the history information storage means 926, as shown in FIG. 13, the replacement history information of the striking plate 322 and the rebound plate 33 is stored in the history information storage table 945 together with the operating time Thr.
The contents stored in each table 941 to 945 will be described in detail later.
[0064]
[5. (Determination of zero point position and clearance adjustment)
15 and 16 show a series of flowcharts for determining the zero point position and adjusting the gap.
The determination of the zero point position and the clearance adjustment are performed when the completely new striking plate 322 and the repelling plate 33 are attached, just after the crusher 30 is shipped from the factory, or when the striking plate 322 and the repelling plate 33 are worn by continuing the crushing operation. It is performed when one or both of these are exchanged. Moreover, it is also performed when the hitting plate 322 and the repulsion plate 33 are worn by performing the crushing operation, the zero point position of the repulsion plate 33 is shifted, and the particle size of the obtained crushed material is increased.
In the following, description will be given assuming that the crusher 30 is immediately after shipment from the factory.
[0065]
ST1: FIG. 15: First, how much the repulsion plate 33 is separated from its own zero point position (the rotation trajectory A at the tip of the striking plate 322) is input as a desired gap amount Ss. The gap amount Ss is input by operating a numeric keypad according to an instruction displayed on the input panel 505 (FIG. 7). The gap amount Ss is input in units of millimeters (mm), for example. At this stage, as shown in FIG. 17A, the rotor 32 is stopped at an arbitrary position, and the gap C between the rotation locus A and the repulsion plate 33 is “before adjustment”.
[0066]
ST2: Next, the gap adjustment is started by pressing the start button 501 (FIG. 7). When the start button 501 is not pressed, the input gap amount Ss is stored in a predetermined area in the storage unit 92.
[0067]
ST3: When the gap adjustment is started, the controller 7 clears the first pulse counter PCh1 for the rebound plate side rotation amount detection sensor 693, and then starts to accumulate the number of pulses by the first pulse counter PCh1.
ST4: Also, after the timer T in the controller 7 is cleared, time measurement is started.
[0068]
ST5: Thereafter, the controller 7 outputs a control signal to the control valves 8B and 8C to switch to the communication position, and drives the hydraulic motor 64 of the gap adjusting device 60 in the direction in which the repulsion plate 33 is lowered.
ST6: Then, the controller 7 checks whether or not the number of pulses of the first pulse counter PCh1 is increasing (increasing to the minus side). If it has increased, it is determined that the repulsion plate 33 is normally lowered to the rotor 32 side.
[0069]
ST7: On the other hand, if the number of pulses does not increase, the drive of the hydraulic motor 64 is continued until the timer T reaches 3 seconds. However, the time setting of the timer T is not limited to 3 seconds and can be changed as appropriate in the implementation.
ST8: If the number of pulses does not increase even after waiting for 3 seconds, the controller 7 indicates that, for example, the advancing / retreating portion 65 of the gap adjusting device 60 is in a fully extended state or the rebound plate 33 has already hit the rotor 32. It is determined that the rebound plate 33 does not lower any more, and the control valves 8B and 8C are switched to stop the hydraulic motor 64 and stop the rebound plate 33 from moving down.
ST9: Then, the controller 7 outputs an alarm signal to the alarm device 502 to notify the operator that the rebound plate 33 is not lowered.
[0070]
ST10: When the repulsion plate 33 continues to fall normally, the repulsion plate 33 comes into contact with, for example, the rotor body 321 of the rotor 32 as shown in FIG. When the lowering movement of the repulsion plate 33 is continued after the contact, the bolt member 67 of the advancing / retracting portion 65 shown in FIG. 6 does not advance any further, so that the nut member 66 side moves upward.
Therefore, in ST10, it is monitored whether or not the nut member 66 has moved upward. When the detection plate 691 is moved out of the detection region by moving upward and the levitation detection sensor 694 is turned “OFF”, the controller 7 determines that the repulsion plate 33 is in contact with the rotor 32 side.
[0071]
ST11: After it is determined that the repulsion plate 33 is in contact with the rotor 32, the controller 7 switches the control valves 8B and 8C to the shut-off position, stops the hydraulic motor 64, and stops the rebound movement of the repulsion plate 33.
[0072]
ST12 in FIG. 16: Next, the controller 7 clears the pulse counter PCr for the rotor-side rotation amount detection sensor 324, and then starts integration using the pulse counter PCr.
[0073]
ST13: Then, it is monitored whether or not the pulse counter PCr is “2” or more, that is, whether or not the two protrusions 323 (FIG. 7) have passed the rotor-side rotation amount detection sensor 324. In other words, it is monitored whether or not the rotation amount of the rotor 32 exceeds ¼ rotation and the striking plate 322 has surely passed the repulsion plate 33 at least once. Here, since the rotor 32 has not yet rotated, the process inevitably proceeds to ST14.
[0074]
The reason why the rotor 32 is rotated until the two protrusions 323 are detected is that the striking plate 322 does not contact (pass) the rebound plate 33 at all if only one protrusion 323 passes. is there. This is because the rotor-side rotation amount detection sensor 324 does not necessarily detect the protrusion 323 at the contact position between the striking plate 322 and the repulsion plate 33 (the rebound plate 33 in FIG. 7). (Refer to the positional relationship with the rotor side rotation amount detection sensor 324).
[0075]
ST14: Here, the controller 7 switches the control valves 8B and 8C to a communication position different from the previous step (ST5), and drives the hydraulic motor 64 in the direction in which the repulsion plate 33 is raised.
[0076]
ST15: In ST11 (FIG. 15), when the lowering movement of the repulsion plate 33 is stopped, the nut member 66 is slightly lifted and the rising detection sensor 694 is in the “OFF” state. When the hydraulic motor 64 is driven in the upward direction, the nut member 66 first moves downward and returns to the position before the lift before the repulsion plate 33 leaves the contact position with the rotor 32. Then, by continuing to drive the hydraulic motor 64, the bolt member 67 is now retracted, and the repulsion plate 33 is separated from the contact position with the rotor 32.
Therefore, in ST15, the controller 7 monitors the output signal from the floating detection sensor 694 and monitors whether or not the nut member 66 has returned to the position before the floating.
[0077]
ST16: In a state where the nut member 66 is not lowered, the rotor 32 is stopped (here, since the rotor 32 is not yet rotated, the stopped state of the rotor 32 is maintained), and until the nut member 66 is lowered, ST13 Repeat ~ ST16.
[0078]
ST17: When the nut member 66 is lowered and the rising detection sensor 694 is “ON”, the controller 7 switches the control valve 8A to the communication position and rotates the rotor 32 while moving the repulsion plate 33 upward. As described in ST13, the rotation of the rotor 32 is continued until the rotation amount from the initial rotation exceeds 1/4 rotation. That is, in the meantime, ST13 to ST15 and ST17 are repeated.
[0079]
By the way, when the rotor 32 rotates, one striking plate 322 comes into contact with the repulsion plate 33 until the rotation amount exceeds 1/4 rotation. After the striking plate 322 comes into contact with the repulsion plate 33, the rotational speed of the rotor 32 is faster than the speed at which the repelling plate 33 is raised, so that the striking plate 322 causes the advance / retreat portion 65 of the gap adjusting device 60 to float while rotating. Then, the levitation detection sensor 694 is turned “OFF”.
When this happens, the process proceeds from ST15 to ST16, and the controller 7 switches the control valve 8A to the blocking position and stops the rotation of the rotor 32 (see FIG. 17C). Then, ST13 to ST16 are repeated again.
As a result, the routines ST13 to ST16 and the routines ST13 to ST15 and ST17 are executed alternately, and the rotor 32 rotates discontinuously while being in close contact with the repulsion plate 33. It rises discontinuously while being in close contact.
[0080]
ST18, ST19: If it is determined in ST13 that the amount of rotation of the rotor 32 exceeds ¼ rotation, the controller 7 stops the movement of the rebound plate 33 and the rotation of the rotor 32.
Thus, the tip of the striking plate 322 passes and stops while tracing the surface of the repulsion plate 33, and the repulsion plate 33 is located at a substantially interference position with the rotation trajectory A of the striking plate 322, that is, at the tip of the striking plate 322. The controller 7 determines that the position of the rebound plate 33 is a zero point position (see FIG. 17D).
[0081]
As described above, ST1 to ST19 for determining the zero point position are performed by causing the controller 7 to function as the zero point position determining unit 931.
[0082]
Since the rotor 32 always rotates by 1/4, when the striking plate 322 comes into contact with the repulsion plate 33 immediately after the rotation of the rotor 32, the striking plate 322 increases after the zero point position of the rebound plate 33 is determined. The repulsion plate 33 moves more upward and moves away from the rotation locus A greatly. However, since the moving speed of the repulsion plate 33 is very slow as compared with the rotation of the striking plate 322 (rotor 32), the repulsion plate 33 does not actually move away from the rotation trajectory A, and the zero point position is not. There is no problem in accuracy.
[0083]
ST19 ′: Next, the wear amount of the striking plate 322 and the rebound plate 33 is detected, and the replacement operation time thereof is estimated. This will be described later based on another flowchart of FIG.
[0084]
ST20: After determining the zero point position, detecting the wear amount, and estimating the replacement operation time, the controller 7 again clears the first pulse counter PCh1 for the rebound plate side rotation amount detection sensor 693, and then the number of pulses. Starts accumulating.
ST21: Then, the controller 7 drives the hydraulic motor 64 in the direction in which the repulsion plate 33 rises, and actually raises the repulsion plate 33.
[0085]
ST22: When the controller 7 is given the number of pulses of the first pulse counter PCh1 as M (pulses) and the amount of movement of the repulsion plate 33 that moves every time one pulse is counted as N (mm / pulse), the controller 7 The actual gap amount Sr (mm) with respect to the zero point position generated by the movement of the plate 33 is calculated from the following equation 1).
[0086]
Sr = M × N 1)
[0087]
Here, the movement amount N per pulse is determined by the reduction ratio between the cylindrical gear 633 and the gear 634 of the gap adjusting device 60, the screw pitch of each of the screw portions 66A and 67A, and the actual movement trajectory of the repulsion plate 33. It is determined in consideration of the arc shape.
[0088]
ST23: Next, the actual gap amount Sr that increases as the number of pulses of the first pulse counter PCh1 increases (increase to the plus side) is compared with the desired gap amount Ss set and input in ST1, and Sr = Ss The rebound plate 33 is moved in the upward direction until
ST24: The controller 7 stops driving the hydraulic motor 64 and stops the movement of the repulsion plate 33 when Sr = Ss.
As described above, the desired gap amount Ss is adjusted between the striking plate 322 and the rebound plate 33 by ST20 to ST24 (see FIG. 17E).
[0089]
These ST20 to ST24 are performed by causing the controller 7 to function as the gap adjusting means 932.
[0090]
[6. Wear amount detection and replacement operation time estimation-1]
FIG. 18 shows a flowchart for detecting the wear amount of the striking plate 322 and the repelling plate 33 and estimating the replacement operation time.
[0091]
18 ST1: When the determination of the zero point position of the rebound plate 33 is completed in ST19 in FIG. 16, the controller 7 detects the accumulated operating time Thr from an hour meter (not shown) mounted on the crusher 30. To do.
For example, when the current time is immediately after the crusher 30 is shipped from the factory and the crusher 30 is operated for the first time, the operating time Thr is “T0”. Each time the zero point position is determined from the next time, the operating time Thr at that time is detected as T1, T2, T3.
[0092]
ST2: Here, the zero point position of the rebound plate 33 at the time of the operating time T0 is calculated and stored in the zero point position storage table 941 (FIG. 9). Specifically, the number of pulses M of the second pulse counter PCh2 for the rebound plate side rotation amount detection sensor 693 provided in the controller 7 is stored. Here, since the integration of the second pulse counter PCh2 has not yet started, the number of pulses M0 = 0 at the operating time T0.
[0093]
After this, every time when the zero point position is determined while the crushing operation is being performed several times, the number of pulses M (M1, M2, M3...) At the operating time Thr (T1, T2, T3...) Is detected. The difference (M1-M0, M2-M0, M3-M0...) Between the number of pulses M1, M2, M3... At each operating time T1, T2, T3. Is done. However, in this embodiment, since the pulse number M0 = 0 at the operation time T0, the pulse number M1, M2, M3... At each operation time T1, T2, T3. It is memorized as it is.
[0094]
ST3, ST4: Next, the total wear amount L (L1, L2, L3...) Of the striking plate 322 and the rebound plate 33 is calculated from the number of pulses M at the operating time Thr, and the wear amount storage table 943 for each region (FIG. 11). ). This total wear amount L is calculated by the following equation 2) from the number of pulses M of the second pulse counter PCh2 and the aforementioned movement amount N per pulse.
[0095]
L = M x N 2)
[0096]
Thus, in this embodiment, since the impact plate 322 and the repulsion plate 33 are worn by the crushing operation before and after the crusher 30 is operated, the zero point position of the repulsion plate 33 is different. It is possible to detect the total wear amount L of the striking plate 322 and the rebound plate 33 from the difference between the zero point positions.
[0097]
In the operating time T0, since the number of pulses M is “0”, the total wear amount L is also “0”. In short, when operating for the first time after factory shipment, the striking plate 322 and the rebound plate 333 are not worn.
Further, as shown in FIG. 11, the total wear amount L is the sum of the wear amount Ld (Ld1, Ld2, Ld3...) Of the striking plate 322 and the wear amount Lh (Lh1, Lh2, Lh3...) Of the rebound plate. The region-specific wear amount storage table 943 is also provided with a storage area for each wear amount Ld, Lh.
[0098]
As described above, ST1 to ST4 are performed by causing the controller 7 to function as the wear amount calculation means 933.
[0099]
ST5: Here, it is determined whether or not the striking plate 322 and the rebound plate 33 have been replaced before the determination of the zero point position. For this determination, the history information storage table 945 (FIG. 13) is referred to. In the history information storage table 945, history information of “replacement” is stored when the striking plate 322 or the repulsion plate 33 is replaced with another new one at each operating time Thr. When only the portion to be provided is changed, history information “inverted” is stored. The history information is input from the input panel 505 shown in FIG. However, when the crusher 30 is shipped from the factory, “replacement” is stored in advance as history information corresponding to the operating time T0. Accordingly, at the current stage assuming immediately after shipment from the factory, it is determined that both the striking plate 322 and the rebound plate 33 have been replaced, and the process proceeds to ST6.
[0100]
ST6: In ST6, the exchange status is determined. The history information storage table 945 is also referred to for this determination. As a result of the determination, for example, when both are exchanged, such as immediately after the crusher 30 is shipped from the factory, the process proceeds to ST7.
[0101]
ST7: Here, the number M of pulses in the zero point position storage table 941 stored in ST2 and the total wear amount L in the part-by-part wear storage table 943 stored in ST4 are once cleared.
At this stage, these stored contents are originally “0”. However, when both the striking plate 322 and the repelling plate 33 are replaced after the crusher 30 has been operated for a predetermined time, the determination of the zero point position is performed. Since the number of pulses M of the second pulse counter PCh2 when it is performed is not necessarily “0”, some number of pulses M is stored in ST2, or the total wear amount L is calculated in ST3 and ST4. It will be remembered.
However, if both are replaced, the total wear amount L must be “0”. Therefore, only when both are replaced, the stored contents are cleared in ST7.
Then, the second pulse counter PCh2 is also cleared. However, since the second pulse counter PCh2 is not integrated during the operating time T0, the pulse number M is maintained at “0”. Thereafter, integration of the second pulse counter PCh2 is started.
[0102]
ST8: When both the striking plate 322 and the repelling plate 33 are replaced, the next replacement time of the striking plate 322 and the repelling plate 33 is estimated as the replacement operation time.
FIG. 19 shows a time chart showing the wear state of the striking plate 322 and the rebound plate 33 as the operating time Thr elapses. Usually, it is known that the striking plate 322 and the rebound plate 33 are worn out in proportion to the operating time Thr, and the progress of each wear is a known theory determined according to the type of the object to be crushed. It is determined by the wear coefficients Kd0 and Kh0.
Therefore, for example, from the stage of the operating time T0 to the next replacement time, that is, until the respective wear limit values Ldmax and Lhmax are reached from the state where they are not worn at all, the replacement is performed according to the theoretical wear coefficients Kd0 and Kh0. The operating times Td1 and Th1 are estimated. According to this, it is understood that the striking plate 322 reaches the wear limit value Ldmax earlier than the rebound plate 33.
[0103]
ST9: The estimated replacement operation times Td1 and Th1 are stored in the replacement operation time storage table 944 (FIG. 12). At this time, the replacement operation time Td1 that arrives earlier is stored as the next replacement operation time Tnext. Thus, the estimation of the next replacement time of the striking plate 322 and the rebound plate 33 is completed.
After this, the process returns to ST20 of the gap adjustment flow shown in FIG.
[0104]
These ST5 to ST9 and ST10 to ST15 in FIG. 18 described later are performed by causing the controller 7 to function as the replacement operation time estimation means 934.
[0105]
[7. (Determination of wear limit)
FIG. 20 shows a flowchart for determining whether or not the striking plate 322 and the rebound plate 33 have reached the wear limit during the crushing operation. The determination of the wear limit will be described below based on FIGS.
It is assumed that the crushing operation is performed by the hitting plate 322 and the repulsion plate 33 up to the above-described when the crusher 30 is shipped from the factory. That is, the operating time Thr is in a stage exceeding T0.
[0106]
20 ST1: During the crushing operation, the controller 7 displays wear information on a liquid crystal display device or the like provided on the input panel 505. As the wear information, in addition to the next replacement operation time Tnext (replacement operation time Td1) described above, the current operation time Thr, the next replacement target part, the content of replacement, the estimated wear amount of the striking plate 322 and the rebound plate 33, and the like. .
As the next replacement target part, by referring to the replacement operation time storage table 944, the next replacement operation time Tnext = Td1, it can be determined that the next replacement target part is a striking plate. “Plate” is displayed.
The replacement content is determined from the current operating time Thr by referring to the history information storage table 945 to determine the final history of the striking plate 322. If the final history is “replacement”, then “reversal required” is displayed next. If the final history is “reverse”, then “replacement required” may be displayed next.
The estimated wear amount may be calculated from the product of the current operating time Thr and the above-described theoretical wear coefficients Kd0 and Kh0.
[0107]
ST2: Then, it is monitored whether or not the operation time Thr has reached the next replacement operation time Tnext (= exchange operation time Td1). That is, when Thr = Tnext = Td1, it is determined that the wear amount Ld of the striking plate 322 has reached the wear limit value Ldmax.
In ST2, instead of monitoring the operation time Thr, the estimated wear amount calculated based on the operation time Thr and the theoretical wear coefficient Kd0 may be monitored and compared with the wear limit value Ldmax.
[0108]
ST3: When the wear amount Ld of the striking plate 322 reaches the wear limit value Ldmax, the controller 7 outputs an alarm signal to the alarm device 502 to inform the operator that the striking plate 322 needs to be replaced (reversed). Warning.
ST4: Next, the impact plate 322 is replaced.
[0109]
ST5: After replacement work, if it is necessary to set and input new wear limit values for the replaced striking plate 322 or rebound plate 33, they are input from the input panel 505, and the wear limit value storage for each part is stored. Store in table 942.
For example, when the replaced striking plate 322 or the repulsion plate 33 is not completely new and has a known wear allowance, a wear limit value corresponding to the wear allowance may be input.
[0110]
ST6: Furthermore, the fact that the striking plate 22 has been replaced is input and stored in the history information storage table 945, and the history information storage table 945 is updated. This input operation is also performed from the input panel 505. Then, in the history information storage table 945, “reverse” is stored in the area corresponding to the replacement operation time Td1.
[0111]
The above ST1 to ST6 are performed by causing the controller 7 to function as the wear limit determination means 935.
[0112]
By the way, during the crushing operation (until the operation time Thr reaches the replacement operation time Td1), it is not enough to replace the striking plate 322 or the repulsion plate 33, but the gap C is expanded due to wear of these, and the product There are many cases where the particle size of (crushed material) becomes large. In such a case, it is necessary to determine the zero point position of the rebound plate 33 again and readjust the gap C.
[0113]
Even in such a case, the determination of the zero point position and the clearance adjustment are performed based on the flow of FIGS. 15 and 16, and the wear amount is detected based on the flow of FIG.
In ST1 of FIG. 18, the operating time Thr at the time when the zero point position is determined is detected. For example, if such determination of the zero point position is performed three times before the operation time Thr reaches the replacement operation time Td1, the operation time Thr is detected as T1, T2, and T3 each time.
In ST2 of FIG. 18, every time the zero point position is determined, the number of pulses M (M1, M2, M3) at that time is detected and stored in the zero point position storage table 941. Based on the number of pulses M, the total wear amounts L1, L2, and L3 are calculated from the formula 2) and stored in the site-specific wear amount storage table 943.
Next, since neither the striking plate 322 nor the repulsion plate 33 are exchanged from ST5, the process returns to ST20 in the gap adjusting flow shown in FIG. Accordingly, no new replacement operation time is estimated.
[0114]
[8. Wear amount detection and replacement operation time estimation-2]
As described above, even when it is determined that the operating time Thr has reached the replacement operating time Td1, the wear amount Ld of the striking plate 322 has reached the wear limit value Ldmax, and the striking plate 322 has been replaced, the rebound plate 33 has zero. Since the point position changes, the zero point position is determined and the gap is adjusted again based on the flow of FIGS. 15 and 16, and the wear amount detection and replacement is performed again based on the flow of FIG. 18 as follows. Estimate operating hours.
[0115]
ST1: FIG. 18 Here, the operation time Thr is the same as the replacement operation time Td1, and if the zero point position is determined three times before reaching the replacement operation time Td1, it is the fourth time. This time, Thr = Td1 = T4.
[0116]
ST2: The zero point position of the rebound plate 33 is detected as the number of pulses M4 of the second pulse counter PCh2, and stored in the zero point position storage table 941.
ST3, ST4: The total wear amount L4 is calculated from the number of pulses M4 and stored in the site-specific wear amount storage table 943.
ST5, ST6: It is determined from the history information storage table 945 that only the striking plate 322 has been replaced, and the process proceeds to ST10.
[0117]
ST10: In this case where the replacement operating time Td1 is reached and the impact plate 322 is replaced, the wear amount of the impact plate 322 is “0”, so that the wear amount Ld of the impact plate 322 itself is stored in the area. Store “0”. The total wear amount L4 calculated from the number of pulses M4 is the wear amount Lh4 of the rebound plate 33 that has not been replaced, and L4 = Lh4 is stored in the storage area.
[0118]
ST11: At this time, the wear amount Lh4 of the rebound plate 33 is substantially the actual wear amount, which may be slightly different from the wear amount based on the theoretical wear coefficient Kh0 indicated by the dotted line in FIG. In such a case, a deviation occurs in the replacement operation time Th1 of the rebound plate 33 estimated previously. Therefore, in the present embodiment, the actual wear coefficient Kh1 is calculated from the actual overall wear amount L4 = Lh4 by using the following expression 3), and the rebound plate 33 is calculated from the actual wear coefficient Kh1 and the wear limit value Lhmax. The replacement operation time Th1 ′ is calculated and estimated again.
[0119]
Kh1 = L4 / (T4-T0) ... 3)
[0120]
ST12: On the other hand, the replaced striking plate 322 is not worn at all, and the next replacement operation time Td2 is newly calculated and estimated. However, in this case, unlike immediately after the crusher 30 is shipped from the factory, the actual wear coefficient Kd1 is calculated from the following equation 4) without using the theoretical wear coefficient Kd0, and the actual wear coefficient Kd1 and the wear limit value Ldmax are calculated. From this, the replacement operation time Td2 is calculated and estimated.
[0121]

[0122]
ST9: Next, the replacement operation time storage table 944 is updated. Specifically, the calculated actual wear coefficients Kh1, Kd1 and replacement operation times Td2, Th1 ′ are stored in the replacement operation time storage table 944. Further, the replacement operation times Td2 and Th1 ′ are compared, and the replacement operation time Th1 ′ that comes earlier is stored as the next replacement operation time Tnext.
Further, the value of (L3- (L4-Kh1 (T4-T3))) calculated in the middle of the expression 4) is the wear amount Ld3 during the operation time T3 of the striking plate 322 and the actual rebound plate 33. The overall wear amount L4 = a substantially actual value based on Lh4, and this wear amount Ld3 may be stored in the site-specific wear amount storage table 943 as necessary.
[0123]
As described above, the replacement operation time Th1 ′ of the rebound plate 33 to be replaced next time is re-estimated based on the actual overall wear amount L4 = Lh4, and the reliability is improved. Further, also in the striking plate 322 to be replaced next, the replacement operation time Td2 is estimated by using the actual wear coefficient Kd1 based on the actual overall wear amounts L3, L4 and the actual wear coefficient Kh1, so that Reliability is also improved.
[0124]
Also, during the subsequent crushing work, as the wear information, the replacement operation time Th1 ′ is displayed as the next replacement operation time Tnext, “repulsion plate” is displayed as the next replacement target part, and “required” “Reversal” is displayed, and the estimated wear amount of the striking plate 322 and the rebound plate 33 may be a value calculated from the product of the current operating time Thr and the above-described actual wear coefficients Kd1 and Kh1.
[0125]
[9. Wear amount detection and replacement operation time estimation-3]
Subsequently, as shown in FIG. 19, it is determined that the operating time Thr has reached the replacement operating time Th1 ′, the wear amount Lh of the rebound plate 33 has reached the wear limit value Lhmax, and the rebound plate 33 has been replaced. To do. Also in this case, since the zero point position of the repulsion plate 33 changes, the zero point position is determined again and the gap is adjusted based on the flow of FIGS. 15 and 16, and again based on the flow of FIG. The wear amount is detected and the replacement operation time is estimated as follows.
[0126]
ST1: FIG. 18 Here, the operating time Thr is the same as Th1 ′, and if the operating time Thr = T5 is determined once until the time reaches Th1 ′, the zero point position is determined. (This is a determination of the zero point position for purely adjusting the gap C, which is the determination of the zero point position without the replacement work.) This time, which is the sixth time, Thr = Th1 ′ = T6.
[0127]
ST2: The zero point position of the rebound plate 33 is detected as the number of pulses M6 of the second pulse counter PCh2, and stored in the zero point position storage table 941.
ST3, ST4: The total wear amount L6 is calculated from the number of pulses M6 and stored in the site-specific wear amount storage table 943.
ST5: Refer to the history information storage table 945, determine that only the rebound plate 33 has been replaced, and proceed to ST13.
[0128]
ST13: In this case where the rebound plate 33 is replaced after reaching the replacement operation time Th1 ′, the wear amount of the rebound plate 33 is “0”, so the wear of the rebound plate 33 itself of the part-specific wear amount storage table 943 “0” is stored in the area in which the amount Ld is stored. Further, the total wear amount L6 calculated from the pulse number M6 is the wear amount Ld6 of the striking plate 322 that has not been replaced, and L6 = Ld6 is stored in the storage area.
[0129]
ST14: At this time, the wear amount Ld6 of the striking plate 322 is the wear amount by the striking plate 322 currently in trial use, and may be slightly different from the wear amount based on the actual wear coefficient Kd1 shown by the dotted line in FIG. There is sex. In such a case, a deviation occurs in the replacement operation time Td2 of the hitting plate 322 estimated previously. Therefore, in the present embodiment, the actual wear coefficient Kd2 is calculated from the actual overall wear amount L6 by using the following equation 5), and the impact plate 322 is replaced from the actual wear coefficient Kd2 and the wear limit value Ldmax. The operating time Td2 ′ is newly calculated and estimated.
[0130]
Kd2 = L6 / (T6-T4) ... 5)
[0131]
ST15: On the other hand, the replaced rebound plate 33 is not worn at all, and the next replacement operation time Th2 is newly calculated and estimated. However, in this case, the actual wear coefficient Kh2 is calculated from the following equation 6) without using the theoretical wear coefficient Kh0 and the actual wear coefficient Kh1 of the initial rebound plate 33, and the actual wear coefficient Kh2 and the wear limit value are calculated. From Lhmax, the replacement operation time Th2 is calculated and estimated.
[0132]

[0133]
ST9: Next, the replacement operation time storage table 944 is updated. Specifically, the calculated new actual wear coefficients Kh2, Kd2 and replacement operation times Td2 ′, Th2 are stored in the replacement operation time storage table 944. Further, the replacement operation times Td2 ′ and Th2 are compared, and the replacement operation time Td2 ′ that comes early is stored as the next replacement operation time Tnext.
Further, the value of (L5− (L6−Kd2 (T6−T5))) calculated in the middle of the expression 6) is the wear amount Lh5 during the operating time T5 of the rebound plate 33 and the actual hitting plate 322. The total wear amount L6 = substantially actual value based on Ld6, and this wear amount Lh5 may be stored in the site-specific wear amount storage table 943 as necessary.
[0134]
As described above, since the replacement operation time Td2 ′ of the striking plate 322 to be replaced next time is re-estimated based on the actual overall wear amount L6 = Lh6, the reliability is further improved. Further, also in the repulsion plate 33 to be replaced next, the replacement operation time Th2 is estimated by using the actual wear coefficient Kh2 based on the actual overall wear amounts L5 and L6 and the actual wear coefficient Kd2. Reliability is further improved.
[0135]
During the subsequent crushing operation, as wear information, the replacement operation time Td2 ′ is displayed as the next replacement operation time Tnext, the “striking plate” is displayed as the next replacement target part, and “required” “Replacement” is displayed, and the estimated wear amount of the striking plate 322 and the rebound plate 33 may be a value calculated from the product of the current operating time Thr and the latest actual wear coefficients Kd2 and Kh2.
[0136]
In the next and subsequent times, when one of the striking plate 322 and the rebound plate 33 is replaced, the wear amount is detected and the replacement operation time is estimated based on the flow described above (see FIG. 18). Just do it.
By doing so, each time one is replaced, the next replacement operation time of the other is reviewed while taking into account its own actual wear amount, so that the replacement time can be estimated more accurately.
[0137]
[Effect of the embodiment]
According to this embodiment, there are the following effects.
(1) When the crusher 30 detects the wear amount of the striking plate 322 and the repelling plate 33, the zero point position of the repelling plate 33 at the operating time T0 when they are not subjected to the crushing operation, and the predetermined operating time T1 ... T6 ... Since the total wear amounts L1 to L6 of the striking plate 322 and the rebound plate 33 are quantitatively detected by calculation from the difference from the zero point position after the lapse, the total wear amounts L1 to L6 are accurately detected. it can. Therefore, the replacement operating times Th1 ′, Th2, Td2, Td2 ′,... Of the striking plate 322 and the rebound plate 33 can be calculated from these total wear amounts L1 to L6, and the replacement time can be accurately estimated.
[0138]
(2) In the present embodiment, since the determination of the zero point position of the rebound plate 33 is automatically performed, the time spent for the determination can be shortened. For this reason, it is not necessary to stop the crusher 30 for a long time in order to detect the amount of wear, and it is possible to prevent the work efficiency of the crushing work from being significantly reduced.
[0139]
(3) When the replacement operation time Td1 is reached, by determining the zero point position, the total wear amount L4 can be detected as the wear amount Lh4 of the rebound plate 33, and the total wear amount L4 is included. The replacement operating time Th1 ′ of the rebound plate 33 that is continuously used can be estimated from the actual wear coefficient Kh1 obtained from the equation (3).
Further, the wear amount Ld3 of the striking plate 322 at the operating time T3 can be detected from the actual wear coefficient Kh1, and the actual wear coefficient Kd2 is calculated from the equation 4) including the wear amount Ld3. Based on the coefficient Kd1, the next replacement operation time Td2 of the newly replaced striking plate 322 can be estimated.
Further, even when the replacement operation time Th1 ′ = T6 is reached, the wear amount Ld6 of the striking plate 322 and the wear amount Lh5 of the rebound plate 33 at the operation time T5 are individually detected to be continuously used. It is possible to individually estimate the replacement operation time Td2 ′ of the impact plate 322 and the replacement operation time Th2 of the newly replaced rebound plate 33.
Accordingly, even when the replacement time is different between the striking plate 322 and the rebound plate 33, it is possible to reliably estimate the next replacement time that is continuously used and the next replacement time that is newly replaced.
[0140]
(4) In the replacement operation time Td1, the history information storage table 945 is referred to when the total wear amount L4 is detected, and the replacement state of the striking plate 322 and the repulsion plate 33 is checked. Can be easily determined, and it can be determined without error that the total wear amount L4 at this time is the wear amount Lh4 of the rebound plate 33 only.
Similarly, also in the replacement operation time Th1 ′, by referring to the history information storage table 945, it can be determined without error that the detected total wear amount L6 is the wear amount Ld6 of only the striking plate 322.
Therefore, also in this respect, it is possible to accurately estimate the next replacement timing of the striking plate 322 and the repulsion plate 33 used continuously or newly.
[0141]
(5) Further, during the replacement operation time Td1, the wear amount Ld of the replaced new striking plate 322 is “0”, so the detected overall wear amount L4 is directly the wear amount Lh4 of the rebound plate 33, This wear amount Lh4 can be detected by a value closer to the actual measurement, and the authenticity of the actual wear coefficients Kd1, Kh1 based on this wear amount Lh4, and hence the reliability of the replacement operation times Th1 ′, Td2 can be improved.
Similarly, even during the replacement operation time Th1 ′, the wear amount Lh of the new rebound plate 33 that has been replaced is “0”, and thus the detected overall wear amount L6 is directly the wear amount Ld6 of the striking plate 322. The wear amount Ld6 can be detected with a value closer to the actual measurement, and the authenticity of the actual wear coefficients Kd2 and Kh2 based on the wear amount Ld6 and thus the reliability of the replacement operation times Td2 ′ and Th2 can be improved.
[0142]
(6) In the present embodiment, every time the replacement operation time Td1, Th1 ′ arrives, the wear coefficients Kd, Kh of the striking plate 322 and the rebound plate 33 are reviewed, and the next replacement time is always the latest actual wear coefficient Kd1, Since estimation is performed using Kd2, Kh1, and Kh2, more accurate estimation is possible.
Further, the actual wear coefficients Kd1, Kd2, Kh1, Kh2 are accumulated as data, and by averaging these, the wear coefficients Kd, Kh for estimating the replacement time can be determined. Each time the number of replacements is repeated, the accuracy of the wear coefficients Kd and Kh increases, and the replacement time can be estimated with higher accuracy.
[0143]
(7) In the crusher 30 of the present embodiment, the next replacement operation time Tnext, the accumulated current operation time Thr, the replacement target part, the replacement content, the wear amount estimated for each part, the liquid crystal display device of the input panel 505, etc. Therefore, it is possible to easily know the wear state and replacement time of the striking plate 322 and the rebound plate 33 from these wear information, and prevent the worker from using them beyond the wear limit values Ldmax and Lhmax. it can.
Further, when the operation time Thr reaches the next replacement operation time Tnext, the alarm device 502 is activated, so that it is possible to more reliably prevent the use of the striking plate 322 and the rebound plate 33 beyond the limit.
[0144]
(8) Whether or not the wear amounts Ld and Lh of the striking plate 322 and the rebound plate 33 have reached the wear limit values Ldmax and Lhmax is determined based on the wear limit values Ldmax and Lhmax input from the input panel 505 and the wear coefficients Kd and Kh. The replacement operation time Td, Th is calculated from the above, and the next replacement operation time Tnext based on the replacement operation time Td, Th and the actual operation time Thr are automatically compared by the wear limit determination means 935. Therefore, a more precise and reliable determination based on the comparison determination result can be realized, and it can be reliably determined that the replacement time has been reached.
[0145]
(9) Since the wear limit values Ldmax and Lhmax of the striking plate 322 and the rebound plate 33 are individually stored in the site-specific wear limit value storage table 942, as shown in FIG. Using Kh, the replacement operation times Td and Th of the striking plate 322 and the rebound plate 33 can be calculated individually. The replacement operation time Td, Th of the replacement operation times Tnext is the next replacement operation time Tnext, and the next replacement operation time Tnext and the actual operation time Thr are compared to determine the replacement time of the striking plate 322. Even when the replacement time of the rebound plate 33 is different, it can be reliably determined that each has reached the replacement time.
[0146]
In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
For example, in the above-described embodiment, whether or not the wear amounts Ld and Lh of the striking plate 322 and the rebound plate 33 have reached the wear limit values Ldmax and Lhmax, the operation time Thr is the next replacement operation time Tnext (the replacement operation time Td, Although it has been determined whether or not it has reached Th), by using the wear coefficient K (Kd0, Kd1, Kd2, Kh0, Kh1, Kh2), the striking plate 322 and the repulsion plate 33 with the passage of the operating time Thr. Wear amounts Ld and Lh may be calculated one by one, and it may be determined whether or not the calculated wear amounts Ld and Lh have reached the wear limit values Ldmax and Lhmax, which is substantially the same as in the above embodiment. is there.
[0147]
In the above embodiment, when the operation time Thr reaches the replacement operation time Td, Th, the striking plate 322 and the repulsion plate 33 are immediately replaced. However, the zero point position is temporarily determined without replacement immediately. The total wear amount L may be detected (first time), and thereafter replaced to determine the zero point position and detect the total wear amount L (second time).
By doing so, one wear amount that has not been replaced can be detected as a substantially actual measurement value from the detection of the second total wear amount L, and the replacement was made based on the difference between this actual measurement value and the first total wear amount L. The other wear amount can also be detected as a substantially measured value, and the wear coefficient K can be calculated by a simple logic with a value closer to the substance.
[0148]
Further, when the replacement operating time Td, Th is the same between the striking plate 322 and the repulsion plate 33 and both are replaced at the same time, the actual wear coefficients Kd1, Kd2, Kh0, Kh1 using the above equations 3) to 6). , Kh2, etc. cannot be calculated, and the latest wear coefficient K once used may be used again for the calculation of the next replacement operation time.
Alternatively, as described above, two wear amounts are detected before and after one replacement, both wear amounts are detected as substantially measured values, and the latest wear coefficient K is calculated from this value and used. Good.
[0149]
In the above-described embodiment, the total wear amount L of both the striking plate 322 and the repelling plate 33 is detected. However, the zero point position of the repelling plate 33 is determined by contacting with a portion not subjected to crushing work (not worn). In some cases, the wear amount of only the repulsion plate 33 may be detected from the difference between the zero point positions of the rebound plate 33 before and after operation.
With respect to the striking plate 322, if the wear of the rebound plate 33 and the striking plate 322 progresses to the same extent, when the wear amount Lh of the rebound plate 33 reaches the wear limit value Lhmax, the wear amount Ld of the striking plate 322 also increases. It may be considered that the wear limit value Ldmax has been reached, and they may be exchanged at the same time. In such a case, only the wear limit value Lhmax of the rebound plate 33 may be stored in the part-specific wear limit value storage table 942.
When the degree of progress of wear of the striking plate 322 and the rebound plate 33 is different and the replacement time is clearly different, the difference in the degree of progression is converted into a coefficient, and by using this coefficient, the striking plate is calculated from the wear amount Lh of the repelling plate 33. The wear amount Ld of 322 may be calculated and estimated, and each replacement time can be estimated individually.
[0150]
In the embodiment, for example, while the operation time Thr reaches the replacement operation time Td1, the determination of the zero point position (determination of the zero position without replacement work) is performed at the time of the operation time T1, T2, T3. However, the determination of the zero point position is for adjusting the gap C widened by wear.
However, such determination of the zero point position is periodically performed at the start and end of the crushing operation regardless of whether or not the gap adjustment is necessary, and each time the operation time Thr, the zero point position, and the total wear amount are determined. L may be stored in the zero point position storage table 941 and the site-specific wear amount storage table 943, respectively.
[0151]
The mobile crusher 1 of the embodiment was a self-propelled type provided with a crawler type traveling unit 10, but it may be a wheel type not limited to a crawler type, and is not limited to a self-propelled type. It may be towed.
[0152]
And the impact crusher of this invention is not limited to what is mounted in the mobile crusher 1, For example, the stationary type put on the crushing site may be sufficient.
[0153]
The impact crusher striking portion is not limited to the plate-shaped striking plate 322 that is continuous in the lateral direction as in the above-described embodiment. For example, the impact crusher is composed of a plurality of blocks that are combined in the lateral direction. Also good.
[0154]
The impact crusher is not limited to the type having three rebound plates, but may be one or two, or may be a type having four or more. Moreover, in the type provided with the several repulsion board, the structure which can adjust each clearance gap individually may be sufficient, and arbitrary 2 or more (refer the 2nd, 3rd repulsion board 332,333 of the said embodiment) is connected. You may let them.
[0155]
In addition, in the said embodiment, although the input panel 505 combined the display means, the wear limit value input means, and the history information input means, you may comprise these by separate apparatuses.
[Brief description of the drawings]
FIG. 1 is a side view showing a mobile crusher equipped with an impact crusher according to an embodiment of the present invention.
FIG. 2 is a view of the mobile crusher as viewed from the input side of the object to be crushed.
FIG. 3 is a plan view showing the mobile crusher.
FIG. 4 is a side view showing the impact crusher.
FIG. 5 is a cross-sectional view showing a part of the internal structure of the impact crusher.
FIG. 6 is a sectional view showing a gap adjusting device for the impact crusher.
FIG. 7 is a block diagram of the impact crusher.
FIG. 8 is a block diagram illustrating a controller.
FIG. 9 is a diagram showing a zero point position storage table.
FIG. 10 is a diagram showing a part-specific wear limit value storage table.
FIG. 11 is a diagram showing a part-by-part wear amount storage table;
FIG. 12 is a diagram showing a replacement operation time storage table.
FIG. 13 is a diagram showing a history information storage table.
FIG. 14 is a main flowchart.
FIG. 15 is a flowchart of zero point position determination and gap adjustment.
FIG. 16 is a continuation of the flowchart of the zero point position determination and gap adjustment.
FIG. 17 is a diagram for explaining determination of a zero point position and clearance adjustment.
FIG. 18 is a flowchart of wear amount detection and replacement operation time estimation.
FIG. 19 is a time chart showing the state of wear.
FIG. 20 is a flowchart for determining a wear limit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 30 ... Impact crusher, 32 ... Rotor which is a rotary body, 33,331,332,333 ... Repulsion board, 322 ... Battering board which is a striking part, 505 ... Input panel which is a wear limit value input means, and history information input means , 922 ... Zero point position storage means, 926 ... History information storage means, 931 ... Zero point position determination means, 933 ... Wear amount calculation means, 935 ... Wear limit determination means, 942 ... Wear limit value storage table for each part, C, C1, C2, C3: Clearance, L: Total wear amount as wear amount, Ld: Wear amount of striking portion, Lh: Wear amount of rebound plate, Ldmax, Lhmax: Wear limit values.

Claims (8)

In the impact crusher wear amount detection method,
The striking part (322) is attached to the rotating body (32),
Provided with repulsion plates (33,331,333),
The position where the tip of the striking part (322) and the repulsion plate (33, 331, 333) are in contact with or slightly separated from each other is determined as the zero point position of the repulsion plate (33, 331, 333),
The repelling plates (33, 331, 333) are separated from the striking part (322) by a predetermined amount,
After operating the impact crusher (30), the impact point (322) tip and the repulsion plate (33, 331, 333) are in contact with or slightly separated from the zero point position of the repulsion plate (33, 331, 333). Judging from the position,
Based on the difference between the zero point position before operation and the zero point position after operation , when detecting the wear amount (L) of the striking portion (322) and / or the rebound plate (33, 331, 333) ,
The rotating body (32) is rotated in a state where the repelling plates (33, 331, 333) are in contact with the rotating body (32) whose rotation has stopped, and the striking part (322) is moved to the repelling plate. When the rotating body (32) cannot rotate due to contact with (33, 331, 333), the repulsion plate (33, 331, 333) is moved away from the rotating body (32). A method for detecting the amount of wear of the impact crusher (30), wherein the position where the repulsion plates (33, 331, 333) have moved to a state where the rotating body (32) can rotate is determined as the zero point position. . In the impact crusher (30) wear amount detection method according to claim 1,
A method for detecting the amount of wear of an impact crusher (30), wherein the amount of wear (Ld, Lh) of the striking portion (322) and the rebound plates (33, 331, 333) is individually detected. In the impact crusher (30) wear amount detection method according to claim 1 or 2,
The wear amount of the impact crusher (30), wherein the wear amount (L4, L6, Lh4, Ld6) is detected in consideration of the replacement history of the striking part (322) and the rebound plate (33, 331, 333). Quantity detection method. In the impact crusher (30) wear amount detection method according to any one of claims 1 to 3,
When either one of the striking part (322) and the repelling plates (33, 331, 333) is replaced after operating for a predetermined time, the zero point position of the repelling plates (33, 331, 333) is changed to the striking part (322). Judging from the position where the tip and the repulsion plate (33, 331, 333) are in contact or slightly separated from each other,
A method of detecting the wear amount of the impact crusher (30), wherein the other wear amount (L4, L6, Lh4, Ld6) is detected from the zero point position. In impact crusher
Case (31);
A rotating body (32) having a striking part (322);
Repulsion plates (33, 331, 333) disposed with gaps (C, C1, C3) with respect to the striking portion (322);
The repulsion plates (33, 331, 333) are attached to the case (31), and the repulsion plates (33, 331, 333) are moved close to or away from the rotating body (32). A gap adjusting device (60);
Zero point position determination means (931) for determining the zero point position of the repulsion plates (33, 331, 333) relative to the striking part (322);
Zero point position storage means (922) for storing the zero point position of the repulsion plates (33, 331, 333);
Wear amount calculation means (933) for detecting the wear amount (L, Ld, Lh) of the striking portion (322) and / or the repulsion plate (33, 331, 333) by calculation ,
The zero point position determination means (931) is configured such that the repulsion plate (33, 331, 333) is urged in a direction away from the rotating body (32), so that the gap adjusting device ( 60) An impact crusher (30), characterized in that the impact crusher (30) is provided with a rising detection sensor (694) for detecting the rising . The impact crusher (30) according to claim 5,
Wear limit value input means (505) for inputting wear limit values (Ldmax, Lhmax);
Wear limit judging means (935) for judging whether or not the hitting portion (322) and / or the repulsion plate (33, 331, 333) has reached the wear limit value (Ldmax, Lhmax). Impact crusher (30) characterized by The impact crusher (30) according to claim 6,
Each wear limit value (Ldmax, Lhmax) of the striking portion (322) and the rebound plate (33, 331, 333) is set individually, or the wear limit for each region in which any one of the wear limit values is set An impact crusher (30) comprising a value storage table (942). In the impact crusher (30) according to any of claims 5 to 7,
History information input means (505) for inputting replacement history information of the striking part (322) and the repelling plates (33, 331, 333);
An impact crusher (30) characterized by comprising history information storage means (926) for storing the exchange history information.

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