JP4586296B2

JP4586296B2 - Track trolley

Info

Publication number: JP4586296B2
Application number: JP2001143249A
Authority: JP
Inventors: 国良崔; 良一伊藤
Original assignee: 東光産業株式会社
Priority date: 2001-05-14
Filing date: 2001-05-14
Publication date: 2010-11-24
Anticipated expiration: 2021-05-14
Also published as: JP2002331927A

Description

【０００１】
【発明の属する技術分野】
本発明は、軌道上を走行する軌道用台車に関する。
【０００２】
【従来の技術】
従来、軌道作業における機材や機具の運搬作業に用いられる動力を有しない軌道用台車は、重量のある機具・機材を運搬したり、多数の機具・機材を搬送する際に、大型では鉄製トロリーや木製トロリーが、小型では２つ折りの軽量材を用いたトロリー等がある。大型のものは常時軌道上に留置するか、車輪付き軸部と基台枠部に分解して基地に保管し、必要に応じて組み立てて目的地まで牽引走行して使用し、小型のものはトラック等の車に乗せて目的地まで運搬して行き、現地で形成して軌道上に載置し、手押し移動して荷物を運搬するようになっている。これらの台車は、前後方向に延びる左右の側枠と、これら各側枠の端部間を連結する前後枠と、側枠に設けられ軌道上を走行する車輪と車軸とを備えて構成される。側枠および前後枠には、床板が載置される。また、車に載せて運搬する小型軽量のものは前後の中央で２つに折り畳んで一人で数歩の距離を運搬することができるものもあるが、保管はすべて基地倉庫等において管理するようにしている。台車には、作業員離脱時の自然走行を避けるため、常時車輪を制動し、操作時車輪の制動を解除するブレーキ装置が設けられる。
【０００３】
上記従来の軌道用台車では、重量のある台車の場合、二人程度の人員では持ち上げることができず、複数の人員で持ち上げて軌道上に載せることが多い。このため、通常、軌道上に載せ置き、軌道上にある整備場所等で管理するようにしている。作業時には、台車をこのような整備場所から荷物のある場所に移動して、荷物を積み込み、積み込まれた荷物を作業場所まで運搬するようになっている。小型軽量の台車の場合は、トラック等の車に載せて荷物のある場所まで移動し、台車を軌道上に取り降ろした後、荷物を積んで運搬するようにしている。
【０００４】
【発明が解決しようとする課題】
上記従来の軌道用台車では、人が運ぶには重すぎ、といって頑丈な台車でなくとも運ぶことのできる荷物、例えば、工具、機器類や車両故障時に交換する部品等の荷物で重量が３０Kgからせいぜい１００Kg程度の荷物を運搬する場合、軌道用台車の保管場所から作業場所までの間、または荷物積み込み場所までの間の軌道上に車両または緊急停止して動けない車両があれば、軌道上を走行してそれらの場所まで近づくことができない。また、軌道上で走行停止してしまった車両から、緊急に荷物を近くの駅や基地に運ぶ必要が生じた場合でも同様に、上記従来の軌道用台車の保管場所から走行停止した当該車両までの間に他の車両があれば、軌道上を走行して当該車両まで近づくことができない。このため、緊急時、軌道上の車両に、あるいは、軌道上の車両から機動的に荷物を搬送するためには、駅や所定の保管場所等、軌道近くの多数の場所に予め台車を配置することが望ましい。ところで、駅や軌道周辺などでは、従来の作業用又は運搬用台車の保管用空間を十分に確保管理することが難しいため、台車を限られた遠方の保管場所からトラックに積み込み、作業場所の線路まで持ち運ぶようにしている。しかしながら、地下鉄、建物で囲まれた市街地、高架、トンネルといったところでは、線路上の作業場所までトラックで運ぶことが困難であり、トラックの停止場所から作業場所まで台車を人力により運ばなければならなかった。このため、狭隘な空間に常時保管でき、しかも、軽量でコンパクト、かつ機動的に利用可能な軌道用台車が求められている。
【０００５】
本発明は上記欠点を除くためになされたもので、簡素な構成で、不使用時、コンパクト化して狭隘な場所にも収容することができ、しかも、少人数で取り扱うことができ、軌道への載架と離脱が容易で機動的に使用可能な軌道用台車を提供するものである。
【０００６】
【課題を解決するための手段】
前後方向に延びる両側枠と、これら側枠にそれぞれ回動自在に取り付けられ軌道上を走行可能な車輪と、これら側枠の前後方向両側にそれぞれ設けられ、両側枠を内側に変位可能に連結するとともに、開閉可能に内側に折り畳まれる前後枠とを備え、前後枠をそれぞれ、両側枠端部に軌間方向に取り付けられた固定枠と、これら固定枠とピンを介して回動可能にそれぞれ接続される連杆と、各連杆をピンを介してそれぞれ連結するとともに、前後枠の開時、連杆に当接される連結部とを備えて構成し、固定枠の軌間方向外側には、棒状ロック部材を上から差し入れ可能な固定枠側受け入れ部を形成し、連杆を固定枠上を回動可能に固定枠の軌間方向内側でピンを介して固定枠に接続するとともに、連結部を、前後枠の開時、連杆が固定枠上に重なるよう連杆に当接させ、上記重なり合った連杆の、固定枠の受け入れ部上に上記棒状ロック部材を上から貫通させて固定枠側受け入れ部に導く連杆側受け入れ部を形成し、前後枠の開時、これら重なり合った連杆側受け入れ部と固定枠側受け入れ部とに棒状ロック部材を差し入れ、前後枠を開状態でロックするよう構成したものである。
【０００７】
本発明に係る軌道用台車では、前後方向に延びる両側枠と、これら側枠にそれぞれ回動自在に取り付けられ軌道上を走行可能な車輪と、これら側枠の前後方向両側にそれぞれ設けられ、両側枠を内側に変位可能に連結するとともに、開閉可能に内側に折り畳まれる前後枠とを備え、前後枠をそれぞれ、両側枠端部に軌間方向に取り付けられた固定枠と、これら固定枠とピンを介して回動可能にそれぞれ接続される連杆と、各連杆をピンを介してそれぞれ連結するとともに、前後枠の開時、連杆に当接される連結部とを備えて構成し、固定枠の軌間方向外側には、棒状ロック部材を上から差し入れ可能な固定枠側受け入れ部を形成し、連杆を固定枠上を回動可能に固定枠の軌間方向内側でピンを介して固定枠に接続するとともに、連結部を、前後枠の開時、連杆が固定枠上に重なるよう連杆に当接させ、上記重なり合った連杆の、固定枠の受け入れ部上に上記棒状ロック部材を上から貫通させて固定枠側受け入れ部に導く連杆側受け入れ部を形成し、前後枠の開時、これら重なり合った連杆側受け入れ部と固定枠側受け入れ部とに棒状ロック部材を差し入れ、前後枠を開状態でロックするよう構成したので、前後枠の開時、棒状ロック部材を上方から連杆側受け入れ部を介して固定枠側受け入れ部に差し入れると、連杆は固定枠に対して回動が阻止される。このため、棒状ロック部材を差し入れるだけで前後枠を開状態にロックすることができ、台車の組み立て作業を容易に行うことができる。また、棒状ロック部材を上方に抜き取ると、連杆は固定枠に対して回動可能となり、前後枠の開状態のロックが解除されるので、前後枠を容易に閉状態とすることができ、収納作業が効率化される。また、使用しないとき、前後枠により側枠を内側に変位させると、台車の占める嵩が減少される。このため、狭隘な場所に収容することができる。また、本体を前後枠と側枠とにより簡素に構成しているので、軽量化され、少人数で取り扱うことができる。
【００１８】
請求項２に係る軌道用台車は、軌道用台車には、常時所定の車輪を制動し、制動解除操作レバーの操作時のみ車輪の制動を解除するブレーキ装置を設けたものである。
【００１９】
請求項２に係る軌道用台車では、軌道用台車には、常時所定の車輪を制動し、制動解除操作レバーの操作時のみ車輪の制動を解除するブレーキ装置を設けたので、軌道用台車が開状態で軌道上に載置された際、作業員が軌道用台車から離れても軌道用台車が自然に走り出すことがなく、作業を安全に行うことができる。走行時には、制動解除操作レバーを操作して、車輪の制動を解除すると、台車を走行させることができる。
【００２０】
請求項３に係る軌道用台車は、制動解除操作レバーは、台車に着脱可能に取り付けられた手押しハンドルに設けられるようにしたものである。
【００２１】
請求項３に係る軌道用台車では、制動解除操作レバーは、台車に着脱可能に取り付けられた手押しハンドルに設けられるようにしたので、前後枠を閉じて台車を収納する際、手押しハンドルを台車から取り外し枠とともにコンパクトに収納することができる。また、作業時、手押しハンドルを取り外して台車への積み込みまたは台車からの積み卸し作業を容易に行うことができるので、作業性が向上する。さらに、手押しハンドルを取り外して台車への積み込み積み卸し作業を行う際、制動解除操作レバーを操作しない限り台車は制動状態に保持されるので、安全に作業を行うことができる。
【００２４】
請求項４に係る軌道用台車は、手押しハンドル下端を連杆側受け入れ部と固定枠側受け入れ部とに差し入れ可能としたものである。
【００２５】
請求項４に係る軌道用台車では、手押しハンドル下端を連杆側受け入れ部と固定枠側受け入れ部とに差し入れ可能としたので、手押しハンドルをロック部材として兼用することができ、部品点数の増大を抑えることができる。
【００２６】
請求項５に係る軌道用台車は、手押しハンドルと連杆側受け入れ部とには、手押しハンドルの回動を阻止する係り止め機構が設けられるようにしたものである。
【００２７】
請求項５に係る軌道用台車では、手押しハンドルと連杆側受け入れ部とには、手押しハンドルの回動を阻止する係り止め機構が設けられるようにしたので、手押しハンドルを安定して保持することができる。
【００２８】
【発明の実施の形態】
以下、本発明の一実施の形態により本発明を説明する。図１ないし図３はそれぞれ、本発明の一実施の形態に係る軌道用台車をそれぞれ示す平面図、側面図および正面図である。上記実施の形態に係る軌道用台車２は、図１および図２に示すように、軌道上を走行可能な車輪３を有し前後方向（図１のＡ方向参照）に延びる両側枠４Ａ、４Ｂと、側枠４Ａ、４Ｂの前後方向両側にそれぞれ設けられ、両側枠４Ａ、４Ｂを外側に（軌間方向に）変位可能に連結する前後枠５Ａ、５Ｂとを備えて構成される。車輪３は各側枠４Ａ、４Ｂの前後にそれぞれ回動自在に取り付けられる。
【００２９】
前後枠５Ａ、５Ｂはそれぞれ、図１に示すように、開閉可能に内側に折り畳まれるようになっている。前後枠５Ａ、５Ｂはそれぞれ、両側枠４Ａ、４Ｂの前後方向の各端部６に軌間方向（図１のＢ方向参照）に取り付けられた固定枠７Ａ、７Ｂ、７Ｃ、７Ｄと、これら固定枠７Ａ〜７Ｄとピン８を介して回動可能にそれぞれ接続される連杆９Ａ、９Ｂ、９Ｃ、９Ｄと、前後方向の同じ側に設けられた連杆９Ａと９Ｂ、９Ｃと９Ｄをピン１０を介してそれぞれ連結する連結部１１とを備えて構成される。前後方向の同じ側に設けられた連杆９Ａと９Ｂ、９Ｃと９Ｄはそれぞれ、固定枠７Ａ〜７Ｄ上の軌間方向内側でピン８を介して固定枠７Ａ〜７Ｄに回動可能に連結される。連結部１１、１１は、断面コ字状に形成され、長手方向両側で各連杆９Ａ、９Ｂおよび９Ｃ、９Ｄとピン１０によりそれぞれ連結されるとともに、連杆９Ａ〜９Ｄが固定枠７Ａ〜７Ｄ上に重なるとき、コ字状縦壁の内側面が連杆９Ａ〜９Ｄに当接されるようになっている。
【００３０】
このため、図５に示すように、連結部１１、１１が外側に向かって変位すると、各連杆９Ａ〜９Ｄは図１に示すような側枠４Ａ、４Ｂと平行な位置で閉じた状態から、徐々に側枠４Ａ、４Ｂを外側に押し広げて開き、連結部１１、１１が最も外側に位置したとき、すなわち、前後枠５Ａ、５Ｂの開時、連杆９Ａ〜９Ｄが固定枠７Ａ〜７Ｄ上に重なると連結部１１、１１は連杆９Ａ〜９Ｄに当接し、それ以上連杆９Ａ〜９Ｄが変位するのを阻止するようになっている。
【００３１】
軌道用台車２は、図４に示すように、前後枠５Ａ、５Ｂが開かれると、両側の車輪３が軌間に合致し、軌道上に載置されるようになっている。そして、前後枠５Ａ、５Ｂが開かれた台車２には、前後枠５Ａ、５Ｂ間に床板１２が嵌め入れられるようになっている。この床板１２は、連結部１１、１１に当接し、前後枠５Ａ、５Ｂを開状態で保持し側枠４Ａ、４Ｂが内側に変位するのを阻止するロック手段としての役割を果たしている。床板１２は、図４に示すように、前後で３分割された板片を蝶番で接続して構成され、使用しないときは、折り畳むことができるようになっている。
【００３２】
車輪３には、図２および図４に示すように、前後側の各車輪の一方３Ａ、３Ｂには、ブレーキ装置２０が設けられる。このブレーキ装置２０は、図２に示すように、側枠４Ａ、４Ｂに軌間方向と平行に取り付けられた軸２１と、この軸２１を中心に揺動可能に設けられたブレーキ基部２２と、このブレーキ基部２２にボルトにより取り付けられ車輪３に圧接されるブレーキシュー２３とを備えている。ブレーキ基部２２は、一端がばね２４を介して側枠４Ａ、４Ｂに接続され他端がワイヤ２５を介して制動解除操作レバー２６に接続される（図４、図７参照）。制動解除操作レバー２６は、後述する手押しハンドル３０に取り付けられる。このブレーキ装置２０は、ばね２４の弾発付勢力によりブレーキ基部２２が常にブレーキシュー２３を車輪３Ａ、３Ｂに圧接させ制動状態に保持し、制動解除操作レバー２６の操作によりブレーキ基部２２がばね２４の付勢力に抗して揺動されると制動が解除されるようになっている。ワイヤ２５には、経路の途中に図示しない連動操作部が設けられ、２箇所の制動解除操作レバー２６のうちいずれか一方の制動解除操作レバー２６が操作されると、両方のブレーキ基部２２が同時に揺動され２箇所のブレーキ装置２０が同時に動作し、車輪３Ａ、３Ｂの制動が解除されるようになっている。
【００３３】
手押しハンドル３０（棒状ロック部材）は図６および図７に示すように、円筒状の棒部材をＬ字状に形成して構成される。手押しハンドル３０は、下部に円筒状の差し入れ部３１が形成されるとともに、差し入れ部３１の上部には、回り止め用のピン（係り止め機構）３２が設けられる。差し入れ部３１は、円筒状に形成された円筒部３１Ｂと、この円筒部３１Ｂの下端には円筒部３１Ｂに連続し円錐状に縮径する円錐部３１Ａとからなっている。手押しハンドル３０は、上部が横方向に折り曲げられ、手押し部３３が形成される。手押し部３３には、制動解除操作レバー２６が取り付けられる。なお、手押しハンドル３０は、上部を横方向に折り曲げず、直棒状（図示せず）としてもよく、その直棒状手押しハンドルの上部に制動解除操作レバー２６を取り付けてもよい。
【００３４】
前後枠５Ａ、５Ｂには、図１および図４に示すように、開時、手押しハンドル３０の差し入れ部３１が差し入れられる固定枠側と連杆側の受け入れ部４１、４２が形成される。固定枠側受け入れ部４１は、図６および図７に示すように、固定枠７Ａ〜７Ｄの軌間方向外側に、手押しハンドル３０の差し入れ部３１を抜き差し自在に差し入れる中空円筒状に形成して構成される。
【００３５】
連杆側受け入れ部４２は、図１に示すように、連杆９Ａ〜９Ｄの連結部１１と反対側の端部に、手押しハンドル３０の差し入れ部３１を抜き差し自在に差し入れる中空円筒状に形成して構成される。この連杆側受け入れ部４２は、図６および図７に示すように、前後枠５Ａ、５Ｂの開時、連杆９Ａ〜９Ｄが固定枠７Ａ〜７Ｄと一直線状に重なった際、固定枠側受け入れ部４１上に位置し、重なるようになっている。
【００３６】
そして、前後枠５Ａ、５Ｂの開時、これら受け入れ部４２、４１に手押しハンドル３０が挿入されると、前後枠５Ａ、５Ｂは開状態でロックされるようになっている。このように、ロック手段を、床板１２だけでなく、手押しハンドル３０とこれら受け入れ部４２、４１とによっても構成するようにしているので、たとえ床板１２の取り付け前、あるいは取り外し後でも、手押しハンドル３０が取り付けてありさえすれば、前後枠５Ａ、５Ｂを開状態でロックさせることができる。
【００３７】
連杆側受け入れ部４２上部には、図６および図７に示すように、手押しハンドル３０の回り止め用のピン３２が係合する係合溝４３（係り止め機構）が形成される（図７参照）。係合溝４３は、連杆側受け入れ部４２上端から下方に凹陥して形成される。このため、前後枠５Ａ、５Ｂの開時、手押しハンドル３０の差し入れ部３１を受け入れ部４２、４１に差し込み、ピン３２を係合溝４３に落とし込むと、手押しハンドル３０は、下端の円錐部３１Ａを固定枠側受け入れ部４１から露出させてそれ以上の下方への変位が規制されるとともに、回動が阻止されるようになっている。このように、手押しハンドル３０は、前後枠５Ａ、５Ｂの開時、互いに重なった連杆側受け入れ部４２と固定枠側受け入れ部４１とに差し入れられ、ピン３２が係合溝４３に係合すると、台車側に取り付けられて回り止めが図られる。また、手押しハンドル３０は、係合溝４３からピン３２が離脱し、連杆側受け入れ部４２と固定枠側受け入れ部４１から抜きとられると、台車側から離脱し、ワイヤ２５のみを通じて台車側と接続される。
【００３８】
各前後枠の両受け入れ部４１，４２は、図４に示すように、一方に手押しハンドル３０が装着され、他方には係合ピン（棒状ロック部材）５０が装着されるようになっている。係合ピン５０は、手押しハンドル３０の差し入れ部３１（３１Ａ、３１Ｂ）と同じ形状を有し、係合溝４３に係合するピン５２（図６参照）を備えている。各前後枠の両受け入れ部４１，４２に係合ピン５０を挿入することにより、前後枠５Ａ、５Ｂのロックが確実になる。符号５３は、連杆９Ａ〜９Ｄ上に設けられた荷物載置台である。固定枠７Ｂ、７Ｃにはそれぞれ、前後方向に貫通する穴６０が、また、側枠４Ａ、４Ｂにはそれぞれ、軌間方向に貫通する穴６２が穿設され、これら穴６０、６２を通ってワイヤ２５が制動解除操作レバー２６とブレーキ装置２０とに接続される。すなわち、ワイヤ２５は、側枠４Ａ、４Ｂの穴６２から側枠４Ａ、４Ｂ内を通って側枠端部６より固定枠７Ｂ、７Ｃの穴６０より出て手押しハンドル３０の制動解除操作レバー２６に連結される。さらに、側枠４Ａ、４Ｂにはそれぞれ、軌間方向に貫通する別の穴６１が穿設される。ワイヤ６３はこれら穴６１、６１を通って両ブレーキ装置２０間を接続しこれら両ブレーキ装置２０を同時に動作させるようになっている。
【００３９】
次に、上記実施の形態に係る軌道用台車２の作用について説明する。この軌道用台車２は、図１に示すように、通常、前後枠５Ａ、５Ｂを内側に折り畳み、手押しハンドル３０、３０を取り外した状態で収納される。このとき、手押しハンドル３０、３０は、台車本体とワイヤ２５のみを介して接続される。前後枠５Ａ、５Ｂは、図５に示すように、連結部１１、１１を内側に変位させると、前後の各連結部１１、１１に連結された前後側の各連杆９Ａ、９Ｂおよび９Ｃ、９Ｄはピン８を中心に固定枠７Ａ、７Ｂおよび７Ｃ、７Ｄ上で回動し、図１に示すように、連結部１１、１１の内側への変位が規制される位置に達すると、閉状態となる。軌道用台車２は、この閉状態で収納すれば、台車の占める嵩が減少され、狭隘な場所に収容することができる。このとき、ワイヤ２５を介して本体側に接続された手押しハンドル３０，３０も前後枠５Ａ、５Ｂが閉状態の台車本体と一緒に紐やベルトなどで縛るようにしてもよい。
【００４０】
軌道用台車２を使用する際には、側枠４Ａ、４Ｂを外側に変位させると、それに応じて内側に位置する連結部１１，１１が外側に変位する。そして、図４および図６に示すように、連結部１１、１１が連杆９Ａ〜９Ｄに当接し外側への変位が規制される位置に達すると、前後枠５Ａ、５Ｂは開状態となり、車輪３は軌間に合致した位置に保持される。この状態で、軌道用台車２を軌道に載置し、図４に示すように、手押しハンドル３０、３０または係合ピン５０，５０を前後それぞれの受け入れ部４２，４１に差し入れると、前後枠５Ａ、５Ｂは開状態でロックされる。他方の受け入れ部４２，４１に、手押しハンドル３０、３０または係合ピン５０，５０のうち他方を挿入し、手押しハンドル３０，３０のピン３２を係合溝４３に係合させ、手押しハンドル３０，３０の回り止めを図る。このとき、ブレーキ装置２０は、制動解除操作レバー２６を操作しない限り、常時、車輪３Ａ、３Ｂを制動状態に保持している。
【００４１】
こうして組み立てられた軌道用台車本体に床板１２が側枠４Ａ、４Ｂ間に嵌め入れられる。床板１２は側枠４Ａ、４Ｂ間の内側への変位を阻止するので、前後枠５Ａ、５Ｂを開状態でロックする。こうして、前後枠５Ａ、５Ｂは、側枠４Ａ、４Ｂ間に嵌め入れられた床板１２と、受け入れ部４２，４１に差し入れられた手押しハンドル３０または係合ピン５０との少なくともいずれか一方により開状態に保持される。このように軌道上に載置された軌道用台車２は、床板１２上に荷物を載せて搬送するようになっている。たとえば、荷物載置台５３は、工具箱類の他に担架等も載せることができるようになっている。搬送時には、操作者が２名の場合、前後の手押しハンドル３０，３０にそれぞれ操作者がつき、操作者の一方を手押し操作とブレーキ操作の両方を行うように、そして他方の操作者を手押し操作のみ行うよう予め決めておき、手押し操作のみの操作者は常に制動解除操作レバー２６の操作を行わず、ブレーキ操作を行う操作者が制動解除操作レバー２６を操作するようにしている。操作者が１名の場合も、手押しハンドル３０は２本取り付け、そのうちいずれか一本を操作するようにしている。なお、手押しハンドル３０は一本のみ取り付け、他の受け入れ部４１，４２には係合ピンを嵌め入れるようにしてもよい。
【００４２】
組み立てられた軌道用台車２を、作業終了後、収納する際には、床板１２を側枠４Ａ、４Ｂから外して折り畳み、開状態の前後枠５Ａ、５Ｂの受け入れ部４２、４１から手押しハンドル３０と係合ピン５０とを抜き外し、片側の車輪３を持ち上げて、連結部１１、１１を内側に変位させると、前後枠５Ａ、５Ｂは折り畳まれる。
【００４３】
この軌道用台車２は、軌道台車本体の重量部分が、車輪３、側枠４Ａ、４Ｂおよび折り畳まれる前後枠５Ａ、５Ｂとからなっているため、台車全体の重量が軽量化される。このため、少人数で組立てや操作を行うことができる。さらに、前後枠５Ａ、５Ｂを折り畳み、手押しハンドル３０も本体から取り外すことができるので、不使用時に折り畳むと台車の占める嵩が減少される。このため、狭隘な場所でも収容することができるので、地下鉄、市街地、高架、トンネルといった空間に制限のある駅や作業所でも、保管しておくことができる。さらに、折り畳んだ状態で本体を縛り、手押しハンドル３０を連杆側受け入れ部４２に差し込むと、折り畳んだ状態で平坦な床を走行させることもできる。
【００４４】
なお、上記実施の形態では、軌道用台車を荷物搬送用として使用することについて述べたが、これに限られるものではなく、例えば、地下鉄や高架鉄道の駅間で停止した客車に最寄りの駅から担架Ｃ（図４、図６、図７参照）などを軌道上の経路を通じて運ぶ場合などにも、利用可能であることはいうまでもない。この場合、複数の台車を用いることにより多数を効率よく運ぶことができる。また、ロック手段として折り畳み式床板や手押しハンドルあるいは係合ピンを用いているがこれに限られるものではなく、開状態または閉状態の前後枠をその状態でロックするロック具やロック装置を設けてもよいことはいうまでもない。さらに、軽量化を図るため、台車の材質を軽量合金や軽量金属により構成してもよく、台車の一部を合成樹脂で構成するようにしてもよい。また、長尺物を運ぶ際など、床板１２を取り付けないで使用することもできる。さらに、床板はアルミ板又はプラスチック板により構成してもよい。また、床板は前後枠に当たるようにしてもよいし、当たらないように多少の間隙を設けるようにしてもよい。また、上記実施の形態では、図２および図７に示すように、車輪３の軸受が側枠４Ａ、４Ｂの上下幅のほぼ中央に設けられ、車輪３の上部が側枠４Ａ、４Ｂ上面より上方に突出しているがこれに限られるものではなく、車輪３の軸受を側枠４Ａ、４Ｂの下に設け、車輪３の頂部が側枠４Ａ、４Ｂ上面より下方に位置するようにしてもよい。このように構成することにより、床板１２の軌間方向の幅を受け入れ部４２，４１のところまで外側に広げることができる。また、積み荷の幅が広がっても車輪３に当たることなく床板に載せることができる。
【００４５】
【発明の効果】
以上述べたように本発明に係る軌道用台車によれば、前後方向に延びる両側枠と、これら側枠にそれぞれ回動自在に取り付けられ軌道上を走行可能な車輪と、これら側枠の前後方向両側にそれぞれ設けられ、両側枠を内側に変位可能に連結するとともに、開閉可能に内側に折り畳まれる前後枠とを備え、前後枠をそれぞれ、両側枠端部に軌間方向に取り付けられた固定枠と、これら固定枠とピンを介して回動可能にそれぞれ接続される連杆と、各連杆をピンを介してそれぞれ連結するとともに、前後枠の開時、連杆に当接される連結部とを備えて構成し、固定枠の軌間方向外側には、棒状ロック部材を上から差し入れ可能な固定枠側受け入れ部を形成し、連杆を固定枠上を回動可能に固定枠の軌間方向内側でピンを介して固定枠に接続するとともに、連結部を、前後枠の開時、連杆が固定枠上に重なるよう連杆に当接させ、上記重なり合った連杆の、固定枠の受け入れ部上に上記棒状ロック部材を上から貫通させて固定枠側受け入れ部に導く連杆側受け入れ部を形成し、前後枠の開時、これら重なり合った連杆側受け入れ部と固定枠側受け入れ部とに棒状ロック部材を差し入れ、前後枠を開状態でロックするよう構成したので、不使用時、コンパクト化して狭隘な場所にも収容することができ、空間に制限のある場所に保管することができるので、多数の場所に設置でき、いつでもどこでも機動的に利用することができる。また、構成が簡素化されているので、少人数で取り扱うことができ、軌道への乗り入れと離脱を容易に行うことができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に係る軌道用台車を示す折り畳み時の平面図である。
【図２】図１の軌道用台車の側面図である。
【図３】図１の軌道用台車の正面図である。
【図４】図１の軌道用台車の開いた状態を示す平面図である。
【図５】前後枠の動作を示す説明図である。
【図６】図４の軌道用台車の正面である。
【図７】図４の軌道用台車の側面図である。
【符号の説明】
２軌道用台車
３車輪
４Ａ、４Ｂ側枠
５Ａ、５Ｂ前後枠[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a track carriage that travels on a track.
[0002]
[Prior art]
Conventionally, track trucks that do not have the power used for transporting equipment and equipment in track work are used to transport heavy equipment and equipment, and to transport large numbers of equipment and equipment, A small wooden trolley is a trolley using a light material folded in half. Large ones are always placed on the track, or are disassembled into wheeled shafts and base frame parts and stored at the base, assembled as needed and pulled to the destination for use. They are carried on trucks and other vehicles and transported to their destinations, formed on-site, placed on the track, and moved by hand to carry the cargo. These carts are configured to include left and right side frames that extend in the front-rear direction, front and rear frames that connect the end portions of the side frames, wheels that are provided on the side frames and run on a track, and axles. . Floor boards are placed on the side frames and the front and rear frames. In addition, there are some small and lightweight ones that are carried on a car and can be folded in two at the center of the front and back to carry a few steps by one person, but all storage should be managed in a base warehouse. ing. The cart is provided with a brake device that constantly brakes the wheel and releases the brake of the wheel during operation in order to avoid natural travel when the worker leaves.
[0003]
In the above-mentioned conventional track carriage, in the case of a heavy truck, it cannot be lifted by about two persons, and is often lifted by a plurality of persons and placed on the track. For this reason, it is usually placed on a track and managed at a maintenance place on the track. At the time of work, the carriage is moved from such a maintenance place to a place where the luggage is present, the luggage is loaded, and the loaded luggage is transported to the work place. In the case of a small and light truck, the truck is placed on a truck or the like and moved to a place where the luggage is present. After the truck is taken down on the track, the luggage is loaded and transported.
[0004]
[Problems to be solved by the invention]
In the above conventional track cart, it is too heavy for a person to carry, but it can be transported even if it is not a sturdy cart, for example, luggage such as tools, equipment and parts to be replaced when the vehicle breaks down. When carrying a load of 30 kg to 100 kg at most, if there is a vehicle or a vehicle that cannot stop due to an emergency stop on the track between the storage location of the track carriage and the work location or the load loading location, the track You can't drive up to those places. In addition, even when it is necessary to carry luggage to a nearby station or base urgently, from the vehicle that has stopped traveling on the track to the vehicle that has stopped traveling from the storage location of the conventional track carriage as well. If there is another vehicle between the two, the vehicle cannot travel close to the vehicle. For this reason, in an emergency, in order to transport a load to a vehicle on a track or from a vehicle on a track, a cart is arranged in advance in many places near the track such as a station or a predetermined storage location. It is desirable. By the way, because it is difficult to secure and manage the storage space for conventional work or transportation trolleys at stations and around tracks, trucks are loaded onto trucks from limited remote storage locations. To carry it up to. However, in subways, urban areas surrounded by buildings, overpasses, and tunnels, it is difficult to carry trucks to the work place on the railroad track, and the carriage must be transported manually from the truck stop to the work place. It was. For this reason, there is a need for a track carriage that can be always stored in a narrow space and that is lightweight, compact, and can be used flexibly.
[0005]
The present invention has been made to eliminate the above-mentioned drawbacks. With a simple configuration, when not in use, the present invention is compact and can be accommodated in a narrow space, and can be handled by a small number of people. It is an object of the present invention to provide a track carriage that can be mounted and detached easily and used flexibly.
[0006]
[Means for Solving the Problems]
Both side frames that extend in the front-rear direction, wheels that are pivotally attached to these side frames and that can run on tracks, and are provided on both sides in the front-rear direction of these side frames, both side frames are connected to be displaceable inward And can be folded inward to open and close With front and rear frames, Each of the front and rear frames is fixedly attached to the ends of both sides of the frame in the gauge direction, the fixed frames are connected to each other in a rotatable manner via pins, and the respective links are connected via pins. In addition, when the front and rear frames are opened, a connecting portion that comes into contact with the joint is formed, and on the outer side in the gauge direction of the fixed frame, a fixed frame side receiving portion into which a rod-like lock member can be inserted is formed. In addition, the linkage is connected to the fixed frame via a pin on the inner side in the gauge direction of the fixed frame so as to be rotatable on the fixed frame, and the linkage is overlapped with the fixed frame when the front and rear frames are opened. A connecting-side receiving portion is formed on the receiving portion of the fixed frame, which is brought into contact with the connecting portion, and penetrates the rod-shaped lock member from above to guide the fixed frame-side receiving portion on the receiving portion of the fixed frame. When opened, these overlapping link side receiving part and fixed frame side receiving Pledged bar-like lock member in bets, and configured to lock the front and rear frame in the open state Is.
[0007]
In the track carriage according to the present invention, both side frames extending in the front-rear direction, wheels that are rotatably attached to the side frames and capable of traveling on the track, and provided on both sides of the side frames in the front-rear direction, The frame can be displaced inward. And can be folded inward to open and close With front and rear frames, Each of the front and rear frames is fixedly attached to the ends of both sides of the frame in the gauge direction, the fixed frames are connected to each other in a rotatable manner via pins, and the respective links are connected via pins. In addition, when the front and rear frames are opened, a connecting portion that comes into contact with the joint is formed, and on the outer side in the gauge direction of the fixed frame, a fixed frame side receiving portion into which a rod-like lock member can be inserted is formed. In addition, the linkage is connected to the fixed frame via a pin on the inner side in the gauge direction of the fixed frame so as to be rotatable on the fixed frame, and the linkage is overlapped with the fixed frame when the front and rear frames are opened. A connecting-side receiving portion is formed on the receiving portion of the fixed frame, which is brought into contact with the connecting portion, and penetrates the rod-shaped lock member from above to guide the fixed frame-side receiving portion on the receiving portion of the fixed frame. When opened, these overlapping link side receiving part and fixed frame side receiving Pledged bar-like lock member in bets, arranged to lock the front and rear frame in the open state So When the front and rear frames are opened, if the rod-shaped lock member is inserted into the fixed frame side receiving portion from above via the continuous side receiving portion, the linkage is prevented from rotating with respect to the fixed frame. For this reason, the front and rear frames can be locked in the open state simply by inserting the rod-like lock member, and the assembly work of the carriage can be easily performed. Further, when the bar-shaped lock member is pulled upward, the linkage can be rotated with respect to the fixed frame, and the lock of the open state of the front and rear frames is released, so that the front and rear frames can be easily closed, Storage work becomes efficient. Also, When the side frame is displaced inward by the front and rear frames when not in use, the bulk occupied by the carriage is reduced. For this reason, it can be accommodated in a narrow place. Further, since the main body is simply constituted by the front and rear frames and the side frames, it is light in weight and can be handled by a small number of people.
[0018]
Claim 2 According to the track carriage, the track carriage is provided with a brake device that constantly brakes predetermined wheels and releases the braking of the wheels only when the brake release operation lever is operated.
[0019]
Claim 2 In the track bogie according to the present invention, the track bogie is provided with a brake device that constantly brakes predetermined wheels and releases the brake of the wheels only when the brake release operation lever is operated. When placed on the track, even if the worker leaves the track cart, the track cart does not run naturally, and the work can be performed safely. When the vehicle is traveling, the vehicle can be driven by operating the brake release operation lever to release the braking of the wheels.
[0020]
Claim 3 The track cart according to the present invention is such that the brake release operation lever is provided on a hand handle that is detachably attached to the cart.
[0021]
Claim 3 In the track cart according to the present invention, the brake release operation lever is provided on the push handle that is detachably attached to the cart. Therefore, when the front and rear frames are closed and the cart is stored, the push handle is removed from the cart and the frame. It can be stored compactly. In addition, during the work, the push handle can be removed and loading onto the cart or unloading from the cart can be easily performed, so that workability is improved. Furthermore, when carrying out the loading / unloading work on the carriage with the handwheel removed, the carriage is maintained in the braking state unless the brake release operation lever is operated, so that the work can be performed safely.
[0024]
Claim 4 The track cart according to the present invention is configured such that the lower end of the push handle can be inserted into the linkage side receiving portion and the fixed frame side receiving portion.
[0025]
Claim 4 In the track cart according to the present invention, the lower end of the push handle can be inserted into the linkage side receiving portion and the fixed frame side receiving portion, so that the push handle can also be used as a lock member, and an increase in the number of parts can be suppressed. it can.
[0026]
Claim 5 In the track carriage according to the present invention, a locking mechanism for preventing the rotation of the hand handle is provided on the hand handle and the joint-side receiving portion.
[0027]
Claim 5 In the track cart according to the present invention, since the locking handle for preventing the rotation of the push handle is provided in the push handle and the linkage side receiving portion, the push handle is stably held. thing Can do.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on an embodiment of the present invention. 1 to 3 are a plan view, a side view, and a front view, respectively, showing a track carriage according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the track carriage 2 according to the above-described embodiment has wheels 3 that can run on the track and has both side frames 4 A and 4 B that extend in the front-rear direction (refer to direction A in FIG. 1). And front and rear frames 5A and 5B which are provided on both sides in the front-rear direction of the side frames 4A and 4B, respectively, and connect the both side frames 4A and 4B so as to be displaceable outwardly (in the gauge direction). The wheel 3 is rotatably attached to the front and rear of the side frames 4A and 4B.
[0029]
As shown in FIG. 1, the front and rear frames 5A and 5B are each folded inward so as to be openable and closable. The front and rear frames 5A and 5B are fixed frames 7A, 7B, 7C, and 7D attached to the end portions 6 in the front-rear direction of the side frames 4A and 4B in the gauge direction (see B direction in FIG. 1), and these fixed frames, respectively. 7A to 7D and the connecting rods 9A, 9B, 9C, 9D connected to each other through the pin 8 and the connecting rods 9A and 9B, 9C and 9D provided on the same side in the front-rear direction. And connecting portions 11 that are connected to each other. The linkages 9A and 9B, 9C and 9D provided on the same side in the front-rear direction are rotatably connected to the fixed frames 7A to 7D via the pins 8 on the inner side in the gauge direction on the fixed frames 7A to 7D, respectively. . The connecting portions 11 and 11 are formed in a U-shaped cross section, and are connected to the connecting rods 9A, 9B and 9C and 9D and the pins 10 on both sides in the longitudinal direction, respectively, and the connecting rods 9A to 9D are fixed frames 7A to 7D. When overlaid, the inner surface of the U-shaped vertical wall is brought into contact with the linkages 9A to 9D.
[0030]
For this reason, as shown in FIG. 5, when the connecting portions 11, 11 are displaced outward, the linkages 9 A to 9 D are closed from a position parallel to the side frames 4 A and 4 B as shown in FIG. 1. The side frames 4A and 4B are gradually spread outward and opened, and when the connecting portions 11 and 11 are located on the outermost side, that is, when the front and rear frames 5A and 5B are opened, the linkages 9A to 9D are fixed frames 7A to 7A. When overlapping on 7D, the connecting portions 11, 11 come into contact with the linkages 9A to 9D, and prevent further displacement of the linkages 9A to 9D.
[0031]
As shown in FIG. 4, when the front and rear frames 5 A and 5 B are opened, the track carriage 2 is placed on the track so that the wheels 3 on both sides coincide with each other. And in the cart 2 with the front and rear frames 5A and 5B opened, the floor plate 12 is fitted between the front and rear frames 5A and 5B. The floor plate 12 abuts on the connecting portions 11 and 11 and serves as a locking means that holds the front and rear frames 5A and 5B in an open state and prevents the side frames 4A and 4B from being displaced inward. As shown in FIG. 4, the floor board 12 is configured by connecting the board pieces divided into three parts at the front and rear with a hinge, and can be folded when not in use.
[0032]
As shown in FIGS. 2 and 4, the wheel 3 is provided with a brake device 20 on one of the front and rear wheels 3 A and 3 B. As shown in FIG. 2, the brake device 20 includes a shaft 21 attached to the side frames 4A and 4B in parallel to the gauge direction, a brake base portion 22 provided so as to be able to swing around the shaft 21, and A brake shoe 23 is attached to the brake base 22 with a bolt and is pressed against the wheel 3. One end of the brake base 22 is connected to the side frames 4A and 4B via a spring 24, and the other end is connected to a brake release operation lever 26 via a wire 25 (see FIGS. 4 and 7). The brake release operation lever 26 is attached to a hand handle 30 described later. In the brake device 20, the brake base 22 always keeps the brake shoe 23 in pressure contact with the wheels 3 A and 3 B by the elastic urging force of the spring 24 to keep it in a braking state, and the brake release operation lever 26 operates the brake base 22 to the spring 24. When it is swung against the urging force, braking is released. The wire 25 is provided with an interlocking operation portion (not shown) in the middle of the path, and when one of the two brake release operation levers 26 is operated, both brake base portions 22 are simultaneously moved. The two brake devices 20 are swung at the same time, and the braking of the wheels 3A and 3B is released.
[0033]
As shown in FIGS. 6 and 7, the hand handle 30 (bar-shaped lock member) is formed by forming a cylindrical bar member into an L shape. The push handle 30 has a cylindrical insertion portion 31 formed in the lower portion thereof, and a pin 32 for preventing rotation (a locking mechanism) 32 is provided on the upper portion of the insertion portion 31. The insertion portion 31 includes a cylindrical portion 31B formed in a cylindrical shape, and a conical portion 31A which is continuous with the cylindrical portion 31B and has a conical diameter reduced at the lower end of the cylindrical portion 31B. The upper part of the hand handle 30 is bent in the lateral direction to form a hand pressing part 33. The brake release operation lever 26 is attached to the hand pushing portion 33. The hand handle 30 may have a straight bar shape (not shown) without bending the upper part in the lateral direction, and the brake release operation lever 26 may be attached to the upper part of the straight bar hand push handle.
[0034]
As shown in FIGS. 1 and 4, the front and rear frames 5 A and 5 B are formed with receiving portions 41 and 42 on the fixed frame side and the linkage side where the insertion portion 31 of the hand handle 30 is inserted when opened. As shown in FIGS. 6 and 7, the fixed frame side receiving portion 41 is formed in a hollow cylindrical shape on the outer side in the gauge direction of the fixed frames 7 A to 7 D so that the insertion portion 31 of the hand handle 30 can be inserted and removed freely. Is done.
[0035]
As shown in FIG. 1, the reaming side receiving part 42 is formed in a hollow cylindrical shape in which the insertion part 31 of the hand handle 30 can be inserted and removed freely at the end opposite to the connecting part 11 of the reams 9A to 9D. Configured. 6 and 7, when the front and rear frames 5A and 5B are open, the continuous side receiving portion 42 is fixed to the fixed frame side when the continuous frames 9A to 9D overlap with the fixed frames 7A to 7D. It is located on the receiving part 41 and overlaps.
[0036]
When the front and rear frames 5A and 5B are opened, when the hand handle 30 is inserted into the receiving portions 42 and 41, the front and rear frames 5A and 5B are locked in the open state. Thus, since the locking means is constituted not only by the floor board 12 but also by the hand handle 30 and the receiving portions 42 and 41, the hand handle 30 even before or after the floor board 12 is attached or removed. As long as is attached, the front and rear frames 5A and 5B can be locked in the open state.
[0037]
As shown in FIGS. 6 and 7, an engagement groove 43 (locking mechanism) for engaging the rotation-preventing pin 32 of the hand handle 30 is formed on the upper part of the linkage-side receiving portion 42 (FIG. 7). reference). The engaging groove 43 is formed to be recessed downward from the upper end of the continuous side receiving portion 42. For this reason, when the front and rear frames 5A and 5B are opened, when the insertion portion 31 of the hand handle 30 is inserted into the receiving portions 42 and 41 and the pin 32 is dropped into the engagement groove 43, the hand handle 30 moves the lower end conical portion 31A. It is exposed from the fixed frame side receiving portion 41, and further downward displacement is restricted, and rotation is prevented. Thus, when the front and rear frames 5A and 5B are opened, the hand handle 30 is inserted into the overlapping side receiving portion 42 and the fixed frame side receiving portion 41 that overlap each other, and the pin 32 engages with the engaging groove 43. Attached to the cart side to prevent rotation. Further, when the pin 32 is detached from the engagement groove 43 and is pulled out from the linkage side receiving portion 42 and the fixed frame side receiving portion 41, the hand handle 30 is detached from the cart side and is connected to the cart side only through the wire 25. Connected.
[0038]
As shown in FIG. 4, each of the receiving portions 41 and 42 of each front and rear frame is attached with a hand handle 30 on one side and an engagement pin (bar-shaped lock member) 50 on the other side. The engagement pin 50 has the same shape as the insertion portion 31 (31 A, 31 B) of the hand handle 30 and includes a pin 52 (see FIG. 6) that engages with the engagement groove 43. By inserting the engaging pins 50 into the receiving portions 41 and 42 of the front and rear frames, the front and rear frames 5A and 5B are securely locked. Reference numeral 53 denotes a luggage placing table provided on the linkages 9A to 9D. The fixing frames 7B and 7C are each provided with a hole 60 penetrating in the front-rear direction, and the side frames 4A and 4B are respectively provided with holes 62 penetrating in the gauge direction. 25 is connected to the brake release operation lever 26 and the brake device 20. That is, the wire 25 passes through the side frames 4A and 4B from the holes 62 of the side frames 4A and 4B, exits from the holes 60 of the fixed frames 7B and 7C from the side frame end 6, and the brake release operation lever 26 of the hand handle 30. Connected to Further, each of the side frames 4A and 4B is provided with another hole 61 penetrating in the gauge direction. The wire 63 is connected to both the brake devices 20 through the holes 61 and 61 so that both the brake devices 20 are operated simultaneously.
[0039]
Next, the operation of the track carriage 2 according to the above embodiment will be described. As shown in FIG. 1, the track carriage 2 is usually stored with the front and rear frames 5 A and 5 B folded inward and the hand handles 30 and 30 removed. At this time, the hand push handles 30 and 30 are connected to the carriage main body only through the wire 25. As shown in FIG. 5, the front and rear frames 5 A and 5 B are respectively connected to the front and rear linkages 9 A, 9 B and 9 C connected to the front and rear connection parts 11, 11 when the connection parts 11, 11 are displaced inward. 9D rotates on the fixed frames 7A, 7B and 7C, 7D around the pin 8, and as shown in FIG. 1, when it reaches a position where the inward displacement of the connecting portions 11, 11 is reached, it is closed. It becomes. If the track carriage 2 is stored in this closed state, the bulk occupied by the carriage is reduced and can be stored in a narrow space. At this time, the push handles 30 and 30 connected to the main body side via the wire 25 may be tied together with a trolley main body with the front and rear frames 5A and 5B closed with a string or a belt.
[0040]
When the track carriage 2 is used, if the side frames 4A and 4B are displaced outward, the connecting portions 11 and 11 positioned on the inside are displaced outward accordingly. As shown in FIGS. 4 and 6, when the connecting portions 11, 11 come into contact with the linkages 9 A to 9 D and reach the position where the outward displacement is restricted, the front and rear frames 5 A, 5 B are in the open state. 3 is held at a position matching the gauge. In this state, when the track carriage 2 is placed on the track, and the hand handles 30, 30 or the engaging pins 50, 50 are inserted into the front and rear receiving portions 42, 41 as shown in FIG. 5A and 5B are locked in the open state. The other of the hand handles 30, 30 or the engaging pins 50, 50 is inserted into the other receiving portions 42, 41, and the pins 32 of the hand handles 30, 30 are engaged with the engaging grooves 43, so that the hand handles 30, Try to stop 30. At this time, unless the brake release operation lever 26 is operated, the brake device 20 always holds the wheels 3A and 3B in a braking state.
[0041]
The floor plate 12 is fitted between the side frames 4A and 4B in the track bogie body assembled in this way. Since the floor board 12 prevents the inward displacement between the side frames 4A and 4B, the front and rear frames 5A and 5B are locked in the open state. Thus, the front and rear frames 5A and 5B are opened by at least one of the floor plate 12 fitted between the side frames 4A and 4B and the hand handle 30 or the engagement pin 50 inserted into the receiving portions 42 and 41. Retained. The track carriage 2 placed on the track in this way is configured to carry a load on the floor plate 12. For example, the luggage placing table 53 can carry a stretcher in addition to tool boxes. At the time of transportation, when there are two operators, the operators are attached to the front and rear push handles 30, 30 so that one of the operators performs both the manual push operation and the brake operation, and the other operator performs the manual push operation. The operator who performs only the hand pushing operation does not always operate the brake release operation lever 26, and the operator who performs the brake operation operates the brake release operation lever 26. Even when there is one operator, two hand handles 30 are attached, and one of them is operated. Only one hand handle 30 may be attached, and the other receiving portions 41 and 42 may be fitted with engaging pins.
[0042]
When the assembled truck 2 is stored after the work is finished, the floor plate 12 is detached from the side frames 4A and 4B and folded, and the push handle 30 is opened from the receiving portions 42 and 41 of the opened front and rear frames 5A and 5B. When the engagement pin 50 is removed, the wheel 3 on one side is lifted, and the connecting portions 11 and 11 are displaced inward, the front and rear frames 5A and 5B are folded.
[0043]
In the track carriage 2, the weight portion of the track carriage main body is composed of the wheels 3, the side frames 4A and 4B, and the folded front and rear frames 5A and 5B, so that the weight of the entire carriage is reduced. For this reason, assembly and operation can be performed with a small number of people. Furthermore, since the front and rear frames 5A and 5B can be folded and the hand handle 30 can be detached from the main body, the volume occupied by the carriage is reduced when folded when not in use. For this reason, since it can be accommodated even in a narrow place, it can be stored even in a station or work place with limited space, such as a subway, an urban area, an elevated place, or a tunnel. Further, when the main body is tied in the folded state and the hand handle 30 is inserted into the continuous side receiving portion 42, the flat floor can be run in the folded state.
[0044]
In the above-described embodiment, the use of the track cart for carrying goods has been described. However, the present invention is not limited to this. For example, from a station nearest to a passenger car stopped between subway and elevated railway stations, Needless to say, it can also be used when carrying the stretcher C (see FIGS. 4, 6 and 7) through a route on the orbit. In this case, many can be efficiently carried by using a plurality of carts. In addition, a folding floor board, a hand handle, or an engaging pin is used as a locking means, but the present invention is not limited to this, and a locking tool or a locking device that locks the open / closed front / rear frame in that state is provided. It goes without saying. Furthermore, in order to reduce the weight, the material of the carriage may be made of a lightweight alloy or a lightweight metal, or a part of the carriage may be made of a synthetic resin. Moreover, when carrying a long thing, it can also be used without attaching the floor board 12. FIG. Furthermore, you may comprise a floor board with an aluminum board or a plastic board. Further, the floor board may hit the front and rear frames, or a slight gap may be provided so as not to hit. Moreover, in the said embodiment, as shown in FIG.2 and FIG.7, the bearing of the wheel 3 is provided in the approximate center of the up-and-down width of side frame 4A, 4B, and the upper part of the wheel 3 is from side frame 4A, 4B upper surface. Although it protrudes upward, it is not restricted to this, The bearing of the wheel 3 may be provided under the side frames 4A and 4B, and the top part of the wheel 3 may be located below the side frames 4A and 4B. . By comprising in this way, the width | variety of the floor direction of the floor board 12 can be expanded outside to the location of the receiving parts 42 and 41. FIG. Moreover, even if the width of the cargo spreads, it can be placed on the floor board without hitting the wheels 3.
[0045]
【The invention's effect】
As described above, according to the track carriage according to the present invention, both side frames extending in the front-rear direction, wheels that are rotatably attached to the side frames and can travel on the track, and the front-rear direction of the side frames are provided. It is provided on both sides, and both side frames are connected to displace inside. And can be folded inward to open and close With front and rear frames, Each of the front and rear frames is fixedly attached to the ends of both sides of the frame in the gauge direction, the fixed frames are connected to each other in a rotatable manner via pins, and the respective links are connected via pins. In addition, when the front and rear frames are opened, a connecting portion that comes into contact with the joint is formed, and on the outer side in the gauge direction of the fixed frame, a fixed frame side receiving portion into which a rod-like lock member can be inserted is formed. In addition, the linkage is connected to the fixed frame via a pin on the inner side in the gauge direction of the fixed frame so as to be rotatable on the fixed frame. A connecting-side receiving portion is formed on the receiving portion of the fixed frame, which is brought into contact with the connecting portion, and penetrates the rod-shaped lock member from above to guide the fixed frame-side receiving portion on the receiving portion of the fixed frame. When opened, these overlapping link side receiving part and fixed frame side receiving Pledged bar-like lock member in bets, arranged to lock the front and rear frame in the open state Therefore, when not in use, it can be compactly accommodated in confined spaces, and can be stored in places with limited space, so it can be installed in many places and used flexibly at any time and anywhere Can do. Simple configuration Conversion Therefore, it can be handled by a small number of people and can easily enter and leave the track.
[Brief description of the drawings]
FIG. 1 is a plan view of a track cart according to an embodiment of the present invention when folded.
FIG. 2 is a side view of the track carriage of FIG.
FIG. 3 is a front view of the track carriage in FIG. 1;
4 is a plan view showing an open state of the track carriage in FIG. 1. FIG.
FIG. 5 is an explanatory diagram showing the operation of the front and rear frames.
6 is a front view of the track carriage in FIG. 4;
7 is a side view of the track carriage of FIG. 4;
[Explanation of symbols]
2 Track dolly
3 wheels
4A, 4B side frame
5A, 5B Front and rear frames

Claims

Both side frames that extend in the front-rear direction, wheels that are rotatably attached to these side frames and that can run on the track, and are provided on both sides in the front-rear direction of these side frames, and both side frames are connected to be displaceable inward. And a front and rear frame that is folded inward to be openable and closable ,
Each of the front and rear frames is fixedly attached to the ends of both sides of the frame in the gauge direction, the fixed frames are connected to each other in a rotatable manner via pins, and the respective links are connected via pins. In addition, when the front and rear frames are opened, a connecting portion that comes into contact with the linkage is configured.
On the outer side of the fixed frame in the gauge direction, a fixed frame side receiving part is formed, into which a rod-shaped lock member can be inserted from above, and the linkage is fixed on the inner side of the fixed frame via a pin so as to be rotatable on the fixed frame. When the front and rear frames are opened, the connecting portion is brought into contact with the linkage so that the linkage overlaps with the fixed frame, and the rod-like lock member is placed on the receiving portion of the fixed frame with the overlapping linkage. Forming a linkage side receiving portion that penetrates from above and leads to the fixed frame side receiving portion, and when the front and rear frames are opened, a rod-shaped lock member is inserted into the overlapping linkage side receiving portion and the fixed frame side receiving portion, A track carriage characterized by being configured to lock the front and rear frames in an open state.

The track carriage according to claim 1 , wherein the track carriage is provided with a brake device that constantly brakes predetermined wheels and releases the braking of the wheels only when the brake release operation lever is operated.

The track carriage according to claim 2 , wherein the brake release operation lever is provided on a hand handle detachably attached to the carriage.

4. The track carriage according to claim 3 , wherein the lower end of the hand handle can be inserted into the linkage side receiving portion and the fixed frame side receiving portion.

The track carriage according to claim 4 , wherein the hand handle and the linkage side receiving portion are provided with a locking mechanism for preventing the hand handle from rotating.