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JP3551866B2 - Power shovel grip fork attachment in backhoe - Google Patents
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JP3551866B2 - Power shovel grip fork attachment in backhoe - Google Patents

Power shovel grip fork attachment in backhoe Download PDF

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Publication number
JP3551866B2
JP3551866B2 JP31727899A JP31727899A JP3551866B2 JP 3551866 B2 JP3551866 B2 JP 3551866B2 JP 31727899 A JP31727899 A JP 31727899A JP 31727899 A JP31727899 A JP 31727899A JP 3551866 B2 JP3551866 B2 JP 3551866B2
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Japan
Prior art keywords
power shovel
fork
backhoe
fork frame
arm
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JP31727899A
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Japanese (ja)
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JP2001098575A (en
Inventor
勇一 竹中
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、バックホウにおけるパワ−ショベルにつかみ機能を付加するためのフォ−クアタッチメントに関する。
【０００２】
【従来の技術】
これまでにバックホウのア−ム先端部に、パワ−ショベルと協働してつかみ機能を果させるため、パワ−ショベル３と対向させて、一体的にはさみフォ−クを取り付けてリンクリンク動作させる態様のもの、或いはパワ−ショベルから独立して別の油圧系によりリンク動作させる態様のものが既に実施されている。
【０００３】
【発明の解決しようとする課題】
しかしこれらは、本来バックホウに既設のものとして工夫されたものであるため、所謂つかみバケットのバックホウの専用機種となり、通常のバケット作業をするためには別の機種を用意する必要がある（作業に併せて一々着脱することは作業性、労力の上から不可能に近い）。本来一台で済む作業を二台備えることはこの種重機の場合にあっては大きな経済的不利を伴う。
さらに、作業現場の状況において作業によって一々機種入替えをするのは、作業性を著しく損う。
【０００４】
【発明が解決しようとする課題】
本発明は、従来のかかる実情に鑑みてなされたもので、これまでの各種バックホウに後付け可能で、つかみ作業、抜根等が効率的に行なえ、不使用時には煽り状態に畳み上げて通常のパワ−ショベルとして機能するつかみフォ−クアタッチメントを提供する。
【０００５】
【課題を解決するための手段】
上記目的を達成するため、本発明は、バックホウ１の油圧機構２を介してリンク動作するパワ−ショベル３と対向させて、前記パワ−ショベル３の上部縁先端フォ−ク配列３ａと噛み合うフォ−ク配列４ａを下端に有するフォ−クフレ−ム４を、バックホウ１のア−ム１ａ先端背中部に枢ピン５を介して枢着する。
【０００６】
そして、さらにこのフォ−クフレ−ム４を、サポ−トリンク機構１４を介して、即ち前記ア−ム１ａ背中部に一端６ａ，６ａを枢ピン７を介して枢着した平行連接杆６，６の他端６ｂ，６ｂと前記フォ−クフレ−ム４の背上部に一端８ａ，８ａを枢ピン９を介して枢着した平行連接杆８，８の他端８ｂ，８ｂとを連接ピン１０を介して連接するとともに、この連接ピン１０に前記パワ−ショベル３の後端上部に前記ア−ム１ａを挟んで突設したホルダ−部１２，１２に一端１３ａ，１３ａを枢着した平行作動杆１３，１３の他端１３ｂ，１３ｂを連結して、パワ−ショベル３と線対称方向に開閉連動動作するように装着してある。
【０００７】
【発明の実施の形態】
本発明は、以上のように構成され、これまでのバックホウ本体には、そのア−ム１ａ背中部にフォ−クフレ−ム４自体を枢着するための枢支部４ｂ及び平行連接杆６，６の一端６ａ，６ａを枢着するための枢支部６ｃを固設し、またパワ−ショベル３の後端上部にア−ム１ａを挟んで平行作動杆１３，１３の一端１３ａ，１３ａを枢着するためのホルダ−部１２．１２を固設する。
【０００８】
そして上記のように、バックホウ１の油圧機構２を介してリンク動作するパワ−ショベル３と対向させて、前記パワ−ショベル３の上部縁先端フォ−ク配列３ａと噛み合うフォ−ク配列４ａを下端に有する格子状のフォ−クフレ−ム４を、バックホウ１のア−ム１ａ先端背中部に枢ピン５を介して枢着する。
【０００９】
そしてさらに、このフォ−クフレ−ム４を、サポートリンク機構１４を介して、即ち前記ア−ム１ａ背中部に一端６ａ，６ａを枢ピン７を介して枢着した平行連接杆６，６の他端６ｂ，６ｂと前記フォ−クフレ−ム４の背上部に一端８ａ，８ａを枢ピン９を介して枢着した平行連接杆８，８の他端８ｂ，８ｂとを連接ピン１０を介して連接するとともに、この連接ピン１０に前記パワ−ショベル３の後端上部に前記ア−ム１ａを挟んで突設したホルダ−部１２，１２に一端１３ａ，１３ａを枢着した平行作動杆１３，１３の他端１３ｂ，１３ｂを連結して、パワ−ショベル３と線対称方向に開閉連動動作するように装着してある。
【００１０】
【作用】
本発明は以上のように構成され、パワ−ショベル３の動作は、これまでのバックホウと同様油圧系によりバケット機能を果す。
そして、このパワ−ショベル３と対向させて設けた同一油圧系にて動くフォ−クフレ−ム４の線対称方向の開閉連動動作により、つかみ作業を可能とする。
また、つかみ作業が不要の時は、フォ−クフレ−ムを煽り状態に畳み上げて固定することにより、通常のパワ−ショベルとして機能する。
【００１１】
今、その動作原理を、より詳細に述べると、図２にパワ−ショベル３とフォ−クフレ−ム４の閉じ状態が示され、図３に開き状態が示される。
図４に油圧系と本発明にかかるサポ−トリンク機構１４との関連動作が示される。
即ち、同図の閉じ状態において油圧ピストンＰを押し上げてリンク動作によりパワ−ショベル３を垂直方向から内側方向へ回動させる（開く）と、これに伴ってホルダ−部１２，１２が回動し、平行作動杆１３，１３が他端１３ｂ，１３ｂを連結してある連接ピン１０を突き上げる。
【００１２】
その結果、図３に示すようにフォ−クフレ−ム４が、サポ−トリンク機構１４を介して、枢ピン５を基点として垂直方向から外側方向へ回動する（開く）。
【００１３】
逆に、図３の状態から油圧ピストンＰを押し下げるとリンク動作によりパワ−ショベル３を内側方向から垂直方向へ戻す（開じる）と、これに伴ってホルダ−部１２，１２が垂直方向に戻って、サポ−トリンク機構１４の平行作動杆１３，１３が他端１３ｂ，１３ｂを介して連接ピン１０を引戻し、フォ−クフレ−ム４が外側方向から垂直方向に回動して、そのフォ−ク配列４ａとパワ−ショベル３のフォ−ク配列３ａとが噛み合う。即ちフォ−クフレ−ム４はパワ−ショベル３と線対称方向に開閉連動動作する仕組みである。
【００１４】
さらに図５に示すように、サポ−トリンク機構１４の平行連接杆６，６の一端６ａ，６ａの枢ピン７及び平行作動杆１３，１３の一端１３ａ，１３ａの枢着部を外した上、パワ−ショベル３の内側回動動作を利用してフォ−クフレ−ム４を枢ピン５を基点として上方へ（ア−ム１ａの腹部側へ）畳み上げて、前記フォ−クフレ−ム４の上部に設けたボルト孔４ｃと畳み上げによって符合する前記ア−ム１ａ背中部に固設した枢支部４ｂに設けたボルト孔４ｄにボルト１５を挿通しナット１６締め固定することにより、通常のバケット機能を果たすバックホウに変身する。
【００１５】
なお、フォ−クフレ−ム４を、長期間使用しない場合は、ボルト１５ナット１６を外し、フォ−クフレ−ム４を下方に降ろした状態で枢ピン５を抜取ることにより容易に取り外しができ、再び取り付けたい場合は、元位置で枢ピン５を差し込むことによりつかみフォ−クの機能が復活する。
【００１６】
【発明の効果】
本発明は以上のようで、これまでの各種バックホウに後付け可能で、不使用時には煽り状態に畳み上げて通常のパワ−ショベルとして機能するつかみフォ−クアタッチメントを実現したものであり、重機の用尽性、作業効率の向上をもたらす上でまことに有利なものである。
【図面の簡単な説明】
【図１】パワ−ショベルとフォ−クフレ−ムの開いた状態の斜視図
【図２】パワ−ショベルとフォ−クフレ−ムの閉じ状態の斜視図
【図３】バックホウ油圧系と本発明にかかるサポートリンク機構との関連動作を示し、（イ）がパワ−ショベルとフォ−クフレ−ムの開き動作の側面図、（ロ）が同閉じ動作の側面図、
【図４】フォ−クフレ−ムを畳み上げた状態の斜視図
【図５】畳み上げ直前のフォ−クフレ−ムとア−ムとの固定手段を示す部分拡大斜視図
【符号の説明】
１ バックホウ
１ａ ア−ム
２ 油圧機構
３ パワ−ショベル
３ａ フォ−ク配列
４ フォ−クフレ−ム
４ａ フォ−ク配列
４ｂ 枢支部
４ｃ ボルト孔
４ｄ ボルト孔
５ 枢ピン
６ 平行連接杆
６ａ 平行連接杆の一端
６ｂ 平行連接杆の他端
７ 枢ピン
８ 平行連接杆
８ａ 平行連接杆の一端
８ｂ 平行連接杆の他端
９ 枢ピン
１０ 連接ピン
１２ ホルダ−部
１３ 平行作動杆
１３ａ 平行作動杆の一端
１３ｂ 平行作動杆の他端
１４ サポ−トリンク機構
１５ ボルト
１６ ナット[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fork attachment for adding a gripping function to a power shovel in a backhoe.
[0002]
[Prior art]
Up to now, in order to perform a gripping function in cooperation with the power shovel at the arm tip of the backhoe, a scissor fork is attached integrally with the power shovel 3 to perform a link link operation. An embodiment or an embodiment in which the link operation is performed by another hydraulic system independently of the power shovel has already been implemented.
[0003]
[Problems to be solved by the invention]
However, these are originally designed as existing ones in the backhoe, so that they are dedicated models of so-called grip bucket backhoes, and it is necessary to prepare another model in order to perform normal bucket work. At the same time, it is almost impossible to attach and detach them one by one from the viewpoint of workability and labor). Providing two units that can be performed by one unit has a great economic disadvantage in the case of this kind of heavy equipment.
Further, changing models one by one in a work site situation by work significantly impairs workability.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of such a conventional situation, and can be retrofitted to various conventional backhoes, can efficiently perform gripping work, root extraction, etc., and when not in use, fold it up in a fanned state and ordinary power. Provide a gripping fork attachment that functions as a shovel.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is directed to a fork engaged with a power shovel 3 which is linked via a hydraulic mechanism 2 of a backhoe 1 and meshed with a fork arrangement 3a at the top edge of the power shovel 3. A fork frame 4 having a lock arrangement 4a at its lower end is pivotally attached to the back of the arm 1a of the backhoe 1 via a pivot pin 5.
[0006]
Further, the fork frame 4 is further connected to a parallel connecting rod 6, 6 having one end 6a, 6a pivotally connected to the back of the arm 1a via a pivot pin 7 via a support link mechanism 14. The connecting pins 10 are connected to the other ends 6b, 6b of the fork frame 4 and the other ends 8b, 8b of the parallel connecting rods 8, 8 having one ends 8a, 8a pivotally connected to the upper back of the fork frame 4 via pivot pins 9. A parallel operating rod having one end 13a, 13a pivotally attached to holder portions 12, 12 projecting from the connecting pin 10 at the upper rear end of the power shovel 3 with the arm 1a interposed therebetween. The other ends 13b, 13b of the members 13, 13 are connected to each other, and are mounted so as to open and close with the power shovel 3 in a line-symmetrical direction.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention is configured as described above, and the conventional backhoe body has a pivotal support 4b and a parallel connecting rod 6, 6 for pivotally attaching the fork frame 4 itself to the back of the arm 1a. A pivotal support 6c for pivotally connecting the ends 6a of the power shovel 3 is fixed, and the ends 13a, 13a of the parallel operating rods 13, 13 are pivotally attached to the upper rear end of the power shovel 3 with the arm 1a interposed therebetween. Is fixedly provided.
[0008]
As described above, the fork arrangement 4a which engages with the fork arrangement 3a at the upper edge of the power shovel 3 is opposed to the power shovel 3 which performs link operation via the hydraulic mechanism 2 of the backhoe 1, and the lower end of the fork arrangement 4a. The fork frame 4 having a lattice shape is pivotally attached to the back of the tip of the arm 1a of the backhoe 1 via a pivot pin 5.
[0009]
Further, the fork frame 4 is further connected to a parallel connecting rod 6, 6 having one end 6a, 6a pivotally connected to the back of the arm 1a via a pivot pin 7 via a support link mechanism 14. The other ends 6b, 6b and the other ends 8b, 8b of the parallel connecting rods 8, 8 having the one ends 8a, 8a pivotally connected to the upper back of the fork frame 4 via the pivot pins 9 via the connecting pins 10. A parallel operating rod 13 having one ends 13a, 13a pivotally attached to holder portions 12, 12 projecting above the rear end of the power shovel 3 from the connecting pin 10 with the arm 1a interposed therebetween. , 13 are connected so as to open and close and interlock with the power shovel 3 in a line symmetrical direction.
[0010]
[Action]
The present invention is configured as described above, and the operation of the power shovel 3 performs a bucket function by a hydraulic system like the conventional backhoe.
The fork frame 4 is moved by the same hydraulic system provided in opposition to the power shovel 3 so that the fork frame 4 can be opened and closed in a line-symmetrical direction to perform a gripping operation.
When the gripping work is not required, the fork frame is folded up in a raised state and fixed, thereby functioning as a normal power shovel.
[0011]
Now, the operation principle will be described in more detail. FIG. 2 shows the closed state of the power shovel 3 and the fork frame 4, and FIG. 3 shows the opened state.
FIG. 4 shows the related operation between the hydraulic system and the support link mechanism 14 according to the present invention.
That is, in the closed state shown in FIG. 5, when the hydraulic piston P is pushed up to rotate the power shovel 3 from the vertical direction to the inside by the linking operation (opening), the holder portions 12, 12 rotate accordingly. The parallel operating rods 13, 13 push up the connecting pin 10 connecting the other ends 13b, 13b.
[0012]
As a result, as shown in FIG. 3, the fork frame 4 is rotated (opened) from the vertical direction to the outside direction with the pivot pin 5 as a base point via the support link mechanism 14.
[0013]
Conversely, when the hydraulic piston P is depressed from the state shown in FIG. 3, the power shovel 3 is returned (opened) from the inner side to the vertical direction by the link operation, and the holder parts 12, 12 are accordingly moved vertically. Returning, the parallel operating rods 13, 13 of the support link mechanism 14 pull back the connecting pin 10 via the other ends 13b, 13b, and the fork frame 4 rotates vertically from the outside and the fork frame 4 rotates. The fork arrangement 3a of the power shovel 3 meshes with the fork arrangement 4a. That is, the fork frame 4 is configured to open and close with the power shovel 3 in a line-symmetrical direction.
[0014]
Further, as shown in FIG. 5, the pivot pin 7 of one end 6a, 6a of the parallel connecting rod 6, 6 of the support link mechanism 14 and the pivotal connecting portion of one end 13a, 13a of the parallel operating rod 13, 13 are removed. The fork frame 4 is folded upward (toward the abdomen of the arm 1a) using the pivot pin 5 as a starting point by utilizing the inner turning operation of the power shovel 3, so that the fork frame 4 An ordinary bucket is inserted by inserting a bolt 15 into a bolt hole 4d provided in a pivot 4b fixed to the back of the arm 1a, which coincides with a bolt hole 4c provided in the upper portion by folding up, and tightening a nut 16. Transform into a backhoe that performs its function.
[0015]
When the fork frame 4 is not used for a long period, the bolt 15 and the nut 16 are removed, and the fork frame 4 can be easily removed by pulling down the fork frame 5 with the fork frame 4 lowered. If it is desired to re-attach, the gripping fork function is restored by inserting the pivot pin 5 in the original position.
[0016]
【The invention's effect】
As described above, the present invention realizes a gripping fork attachment that can be retrofitted to various conventional backhoes, and is folded up in a raised state when not in use and functions as a normal power shovel. This is very advantageous in improving the exhaustion and working efficiency.
[Brief description of the drawings]
FIG. 1 is a perspective view of a power shovel and a fork frame in an open state. FIG. 2 is a perspective view of a power shovel and a fork frame in a closed state. FIG. (A) is a side view of the opening operation of the power shovel and the fork frame, (B) is a side view of the closing operation,
FIG. 4 is a perspective view showing a state where the fork frame is folded up. FIG. 5 is a partially enlarged perspective view showing a means for fixing the fork frame and the arm immediately before being folded up.
Reference Signs List 1 backhoe 1a arm 2 hydraulic mechanism 3 power shovel 3a fork arrangement 4 fork frame 4a fork arrangement 4b pivot 4c bolt hole 4d bolt hole 5 pivot pin 6 parallel connecting rod 6a parallel connecting rod One end 6b The other end 7 of the parallel connecting rod 7 The pivot pin 8 The parallel connecting rod 8a One end 8b of the parallel connecting rod 9 The other end 9 of the parallel connecting rod 9 The pivot pin 10 The connecting pin 12 The holder 13 The parallel operating rod 13a The one end 13b of the parallel operating rod Other end 14 of operating rod Support link mechanism 15 Bolt 16 Nut

Claims (2)

バックホウ（１）の油圧機構（２）を介してリンク動作するパワ−ショベル（３）と対向させて、前記パワ−ショベル（３）の上部縁先端フォ−ク配列（３ａ）と噛み合うフォ−ク配列（４ａ）を下端に有するフォ−クフレ−ム（４）を、バックホウ（１）のア−ム（１ａ）先端背中部に枢ピン（５）を介して枢着し、さらに該フォ−クフレ−ム（４）を、前記ア−ム（１ａ）背中部に一端（６ａ），（６ａ）を枢ピン（７）を介して枢着した平行連接杆（６），（６）の他端（６ｂ），（６ｂ）と前記フォ−クフレ−ム（４）の背上部に一端（８ａ），（８ａ）を枢ピン（９）を介して枢着した平行連接杆（８），（８）の他端（８ｂ），（８ｂ）とを連接ピン（１０）を介して連接するとともに、この連接ピン（１０）に前記パワ−ショベル（３）の後端上部に前記ア−ム（１ａ）を挟んで突設したホルダ−部（１２），（１２）に一端（１３ａ），（１３ａ）を枢着した平行作動杆（１３），（１３）の他端（１３ｂ），（１３ｂ）を連結して成るサポ−トリンク機構（１４）を介して、パワ−ショベル（３）と線対称方向に開閉連動動作するように装着したことを特徴とするバックホウにおけるパワ−ショベルのつかみフォ−クアタッチメント。A fork engaged with a power shovel (3) linked via a hydraulic mechanism (2) of a backhoe (1) and engaged with a fork arrangement (3a) at the upper edge of the power shovel (3). A fork frame (4) having an array (4a) at its lower end is pivotally attached to the back of the arm (1a) end of the backhoe (1) via a pivot pin (5). The other end of the parallel connecting rods (6), (6) having one end (6a), (6a) pivotally connected via a pivot pin (7) to the back of the arm (1a). Parallel connecting rods (8), (8), (6b), (6b) and one end (8a), (8a) pivotally attached to the upper back of the fork frame (4) via a pivot pin (9). ) Is connected to the other end (8b), (8b) through a connecting pin (10), and the power pin is connected to the connecting pin (10). A parallel operating rod (13) having one end (13a) and (13a) pivotally attached to holder portions (12) and (12) protruding from the upper end of the rear end (3) with the arm (1a) interposed therebetween. ) And (13) are mounted so as to open and close in a line-symmetrical manner with the power shovel (3) via a support link mechanism (14) formed by connecting the other ends (13b) and (13b) of (13). A fork attachment for a power shovel in a backhoe. フォ−クフレ−ム（４）が格子状を成す請求項１記載のバックホウにおけるパワ−ショベルのつかみフォ−クアタッチメント。A fork attachment for a power shovel in a backhoe according to claim 1, wherein the fork frame (4) has a lattice shape.
JP31727899A 1999-10-01 1999-10-01 Power shovel grip fork attachment in backhoe Expired - Lifetime JP3551866B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102888870A (en) * 2012-10-29 2013-01-23 中外合资沃得重工（中国）有限公司 Holding fork bucket of loading machine
JP6360945B2 (en) * 2017-05-26 2018-07-18 恵次 高津 Backhoe grip attachment mounting structure

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