JPH11323997A - Work tool replacing structure for construction machine - Google Patents
Work tool replacing structure for construction machineInfo
- Publication number
- JPH11323997A JPH11323997A JP13940398A JP13940398A JPH11323997A JP H11323997 A JPH11323997 A JP H11323997A JP 13940398 A JP13940398 A JP 13940398A JP 13940398 A JP13940398 A JP 13940398A JP H11323997 A JPH11323997 A JP H11323997A
- Authority
- JP
- Japan
- Prior art keywords
- tip
- support pin
- bucket
- arm
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、建設機械の作業
部先端に取り付けられるバケット等の作業具を簡単に取
り替えることのできる構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure capable of easily replacing a working tool such as a bucket attached to the tip of a working section of a construction machine.
【０００２】[0002]
【従来の技術】油圧ショベルの建設機械は、図４に示す
ように、下部走行体11、上部旋回体12、土砂の掘削や積
み込みを行うための作業部13によって構成され、該作業
部13は、先端のバケット４等の作業具、該作業具を自在
に動作させるためのブーム14、アーム１、油圧シリンダ
２等により構成される。2. Description of the Related Art As shown in FIG. 4, a construction machine for a hydraulic shovel comprises a lower traveling unit 11, an upper revolving unit 12, and a working unit 13 for excavating and loading earth and sand. , A working tool such as a bucket 4 at the tip, a boom 14 for freely operating the working tool, an arm 1, a hydraulic cylinder 2, and the like.
【０００３】前記バケット４等の作業具は、直接土砂の
すくい込み作業等を行うため、油圧シリンダ２によって
動作自在に、アーム１先端側に連結されている。この連
結を、作業具としてバケット４が取り付けられる図５を
用いてもう少し詳しく説明すると、バケット４基端部の
ブラケット41に、アーム１先端及び油圧シリンダ２に連
なるロッド３先端とを支持ピン15,16を軸着することで
連結するものである。そして、油圧シリンダ２とロッド
３基端部との連結部17と、アーム１中間部とをサポート
部材７を横架させて支持ピン18で軸着することで、油圧
シリンダ２の伸縮動作を、アーム１先端軸着部（支持ピ
ン16の位置）を中心としたバケットの回転動作とさせる
リンク機構を形成している。[0003] The work implement such as the bucket 4 is operatively connected to the end of the arm 1 by a hydraulic cylinder 2 in order to directly perform the work of scooping earth and sand. This connection will be described in more detail with reference to FIG. 5 in which the bucket 4 is attached as a working tool. The bracket 41 at the base end of the bucket 4 is connected to the tip of the arm 1 and the tip of the rod 3 connected to the hydraulic cylinder 2 by the support pins 15, 16 is connected by axle mounting. The connecting portion 17 between the hydraulic cylinder 2 and the base end of the rod 3 and the intermediate portion of the arm 1 are supported by the support member 7 and mounted on the support pin 18 so that the expansion and contraction of the hydraulic cylinder 2 can be performed. A link mechanism for rotating the bucket about a shaft attachment portion of the arm 1 (the position of the support pin 16) is formed.
【０００４】ところで、このようなバケット４等の作業
具は、土質や作業用途によって掘削容積の異なるバケッ
トや他の作業具に交換されるものであり、その交換に際
しては前記支持ピン15,16を一端取り外し、新たな作業
具を組み込む必要があり、その際ピン孔合わせを行った
後、前記支持ピン15,16を軸着することになる。[0004] By the way, such a working tool such as the bucket 4 is replaced with a bucket or another working tool having a different excavation volume depending on the soil properties and working purpose. It is necessary to remove one end and incorporate a new working tool. At this time, after the pin holes are aligned, the support pins 15 and 16 are pivotally mounted.
【０００５】しかし、作業具基端部とアーム１先端及び
ロッド３先端とのピン孔合わせは困難であり、実際に
は、操縦者がピン孔合わせをしながら補助者が作業具を
組み込むことになり、作業者を複数要す等作業が煩雑な
うえに時間がかかるといった問題があった。However, it is difficult to align the pin holes between the base end of the working tool, the tip of the arm 1 and the tip of the rod 3, and in practice, it is difficult for the assistant to insert the working tool while the operator performs the pin hole matching. In other words, there is a problem that the work is complicated and takes time, such as requiring a plurality of workers.
【０００６】このため実開昭５８−１４０２５５号にお
いて、図６に示すように、アーム１先端とロッド３先端
とに新たなサポート部材６を横架し、そのサポート部材
６に前記両部材１，３を支持ピン21,22により軸着させ
るとともに、バケット４基端部（ブラケット41）の２箇
所に支持ピン23,24を懸架させ、前記サポート部材６に
その一の支持ピン23を係止するフック25と、他の支持ピ
ン24を係脱自在に抱持するキャッチャ26とを備えさせた
構造が提案されている。この構造によれば、前記サポー
ト部材６のフック25をバケット４基端部の前記一の支持
ピン23に係止させ、前記キャッチャ26で他の支持ピン24
を抱持させるだけで、バケット４の装着が行えることに
なり、煩雑さの原因だったピン孔合わせの作業が不要と
なる。For this reason, in Japanese Utility Model Laid-Open No. 58-140255, as shown in FIG. 6, a new support member 6 is suspended across the tip of the arm 1 and the tip of the rod 3, and the two members 1 and 2 are attached to the support member 6. 3 is supported by the support pins 21 and 22, and the support pins 23 and 24 are suspended at two positions on the base end portion (bracket 41) of the bucket 4 so that one of the support pins 23 is engaged with the support member 6. There has been proposed a structure including a hook 25 and a catcher 26 for holding another supporting pin 24 so as to be freely detachable. According to this structure, the hook 25 of the support member 6 is locked to the one support pin 23 at the base end of the bucket 4, and the other support pin 24 is
The bucket 4 can be mounted simply by holding the pin, thereby eliminating the need for pin hole alignment, which has been a cause of complication.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記構
造では、アーム１とバケット４との軸着部が別々とな
り、アーム１先端軸着部（支持ピン21の位置）とバケッ
ト４基端部軸着部（支持ピン23の位置）との間がずれて
所定距離があくことになって、バケット４の回転中心と
なるアーム１先端軸着部からバケット４先端までの距
離、すなわちバケット４の回転半径（Ｒ３）が、図５に
示す従来構造と比較すると（従来構造では回転半径はＲ
１となるので）、前記軸着部間の距離分（Ｒ２）長くな
る。However, in the above-described structure, the arm 1 and the bucket 4 have separate shaft attachment parts, and the arm 1 tip attachment part (position of the support pin 21) and the bucket 4 base end attachment part. And a predetermined distance from the position of the support pin 23 (position of the support pin 23), the distance from the shaft attachment portion of the tip end of the arm 1 serving as the rotation center of the bucket 4 to the tip of the bucket 4, that is, the turning radius of the bucket 4 (R3) is different from the conventional structure shown in FIG.
1), which is longer (R2) by the distance between the shaft attachment portions.
【０００８】そうすると、掘削力はバケットの回転半径
が大きくなるほど小さくなるため、この構造では従来構
造と比較して掘削力が低下するという問題がある。また
回転半径が長くなった分（Ｒ２）だけバケット４基端部
の延長上にあたるフック25及びキャッチャ26に大きな外
力がかかるのみならず、従来の構造と比較して支持ピン
が２本増えて重量が増加し外力がさらに付加され、機械
の安定性も悪くなるという問題があった。In this case, since the excavating force decreases as the turning radius of the bucket increases, there is a problem that the excavating force is reduced in this structure as compared with the conventional structure. In addition, a large external force is applied to the hook 25 and the catcher 26 extending on the extension of the base end of the bucket 4 by an amount corresponding to the increase of the turning radius (R2). , The external force is further applied, and the stability of the machine is deteriorated.
【０００９】この発明は、実開昭５８−１４０２５５号
が有する以上の問題に鑑みなされたもので、その構造の
長所である作業具交換の簡単さを維持させたまま、短所
である掘削力の低下、重量増加等の問題を解決すること
のできる構造を提供しようとするものである。The present invention has been made in view of the above problems of Japanese Utility Model Application Laid-Open No. 58-140255, and has the advantage of its structure, while maintaining the simplicity of exchanging work tools, while maintaining the advantage of excavating force, which is a disadvantage. It is an object of the present invention to provide a structure capable of solving problems such as reduction and weight increase.
【００１０】[0010]
【課題を解決するための手段】このため、この発明に係
る建設機械の作業具交換構造は、作業部のアーム先端及
びロッド先端と、作業具基端部とが、それぞれ支持ピン
を介して直接連結され、その連結部となる前記アーム先
端及びロッド先端または／並びに前記作業具基端部に、
一の支持ピンを係止するフックと、他の支持ピンを係脱
自在に抱持するキャッチャとをそれぞれ形成させたこと
を特徴とする。According to the present invention, there is provided a work implement replacement structure for a construction machine according to the present invention, wherein an end of an arm and a tip of a rod of a work section and a base end of the work implement are directly connected via support pins. Connected to the arm tip and the rod tip or / and the working tool base end to be the connecting portion,
A hook for locking one support pin and a catcher for holding the other support pin in a detachable manner are formed.
【００１１】ここで、前記ロッドは、作業具を動作させ
る油圧シリンダに連なるロッドをいい、それにより油圧
シリンダの伸縮動作を作業具の回転動作として伝導する
リンク機構を形成させる部材をいう。Here, the rod refers to a rod connected to a hydraulic cylinder for operating the work implement, and thereby a member for forming a link mechanism for transmitting the expansion and contraction operation of the hydraulic cylinder as the rotation operation of the work implement.
【００１２】また前記作業具基端部にブラケットが形成
されていれば、そのブラケットは基端部に含まれるもの
である。If a bracket is formed at the base end of the working tool, the bracket is included in the base end.
【００１３】この発明では、前記フックとキャッチャ
は、アーム先端及びロッド先端と、作業具基端部のいず
れか一方でも、またその双方に形成させる態様でも良
い。いずれの構成でも、アーム先端及びロッド先端と、
作業具基端部とは支持ピンを介して直接連結されるの
で、作業具の回転動作の中心は作業具基端部とアーム先
端とを連結する支持ピンとなり、作業具の回転半径を従
来と同様の長さとすることができる。回転半径が従来構
造と同様であれば、掘削力が低下することもなく、また
作業具回転動作の外力がフック及びキャッチャに大きく
かかることはない。さらに支持ピンは、作業具基端部
と、アーム先端及びロッド先端とをそれぞれ連結する２
個で足り、実開昭５８−１４０２５５号のように支持ピ
ンが４個のものと比較して重量が低減されることにな
る。According to the present invention, the hook and the catcher may be formed on one or both of the arm tip and the rod tip and the working tool base end. In any configuration, an arm tip and a rod tip,
Since the base of the work tool is directly connected via the support pin, the center of rotation of the work tool is the support pin that connects the base end of the work tool and the tip of the arm. It can be of similar length. If the turning radius is the same as that of the conventional structure, the excavating force does not decrease, and the external force of the rotating operation of the working tool does not greatly apply to the hook and the catcher. Further, the support pin connects the base end of the working tool, the tip of the arm and the tip of the rod, respectively.
In this case, the number of support pins is sufficient, and the weight is reduced as compared with the case where four support pins are used as in Japanese Utility Model Application Laid-Open No. 58-140255.
【００１４】一方、前記アーム先端及びロッド先端と作
業具基端部との連結は、支持ピンとそれを係止・抱持す
るフック及びキャッチャとによるものであり、まずフッ
クを一の支持ピンに係止した後、キャッチャで他の支持
ピンを抱持させれば、簡単に連結が行われることにな
る。作業具を外す場合は、キャッチャの支持ピン抱持動
作を解除した後、フックを一の支持ピンから外せばい
い。いずれにしても、作業具は簡単に脱着できる。On the other hand, the connection between the end of the arm and the end of the rod and the base end of the working tool is made by a support pin and a hook and a catcher for locking and holding the support pin. After stopping, if the other support pins are held by the catcher, the connection is easily performed. When removing the work tool, the hook may be removed from one support pin after the catcher holding pin holding operation of the catcher is released. In any case, the work implement can be easily attached and detached.
【００１５】[0015]
【発明の実施の形態】本発明の具体的形態例を図面に基
づき説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.
【００１６】本形態例は、作業具がバケットである例を
示す。図１はバケットを取り付ける前の状態、図２は取
り付けた後の状態をそれぞれ示す。図中、１はアーム、
２は油圧シリンダ、３はロッド、４はバケット、41はブ
ラケットである。This embodiment shows an example in which the work implement is a bucket. 1 shows a state before the bucket is attached, and FIG. 2 shows a state after the bucket is attached. In the figure, 1 is an arm,
2 is a hydraulic cylinder, 3 is a rod, 4 is a bucket, and 41 is a bracket.
【００１７】この形態例においても、油圧シリンダ２と
ロッド３基端部との連結部と、アーム１中間部とをサポ
ート部材７を横架させて支持ピン10,20で軸着させる構
成は図５に示す従来構造と同様である。Also in this embodiment, the connecting portion between the hydraulic cylinder 2 and the base end portion of the rod 3 and the intermediate portion of the arm 1 are supported by the support member 7 and supported by the support pins 10 and 20 to be axially attached. This is the same as the conventional structure shown in FIG.
【００１８】前記アーム１先端とロッド３先端との間に
は、新たなサポート部材５が横架され、そのサポート部
材５と前記アーム１先端及びロッド３先端とが支持ピン
40,30で軸着される。これら支持ピン30,40は、各ピン孔
に捜通された際、その両端を十分に突出させて固定され
る。この支持ピン30,40によって軸着されるサポート部
材５と、前記サポート部材７とが相対するリンクとな
り、前記油圧シリンダ２の伸縮動作を、アーム１先端軸
着部（支持ピン40の位置）を中心とした回転動作とさせ
るリンク機構が形成される。A new support member 5 is bridged between the tip of the arm 1 and the tip of the rod 3, and the support member 5 and the tip of the arm 1 and the tip of the rod 3 are supported by support pins.
Attached at 40,30. When these support pins 30 and 40 are pierced through each pin hole, both ends thereof are sufficiently protruded and fixed. The support member 5 and the support member 7 that are axially attached by the support pins 30 and 40 form a link facing each other, and the expansion and contraction operation of the hydraulic cylinder 2 is performed by using the axial attachment portion of the arm 1 (the position of the support pin 40). A link mechanism for rotating around the center is formed.
【００１９】バケット４のブラケット41のうち、前記ア
ーム１対向部側にはフック42が、前記ロッド３対向部側
にはキャッチャ43が形成されている。フック42は前記支
持ピン40に係止し、キャッチャ43は支持ピン30を抱持す
るものであり、いずれも支持ピン40,30の前記両端突出
部分を係止・抱持するように、前記ブラケット41の形成
位置が設定されている。フック42は、内側片方が解放さ
れたピン孔を有する形状をなしている。キャッチャ43
は、解放されたピン孔を有するとともに、該ピン孔に連
なる下方部に支持ピン受け台44と、上方部にネジ孔46を
有した張出部45とが形成された可動片47がブラケット41
に回動自在に軸着されてなる。この構成では、支持ピン
30の押付力を受け台41で受けると可動片47が回動し、張
出部45が下降して開放部を閉じ、これにより支持ピン30
を抱持するものとなる。またブラケット41のうち、支持
ピン30を最終的に受ける箇所にはピン受け座43が形成さ
れるとともに、下降した前記張出部45との当接面に前記
ネジ孔46に連続するネジ孔（図示なし）が形成されてお
り、支持ピン30が可動片47に抱持された状態ではその支
持ピン30は座48に収まり、その状態で張出部45のネジ孔
46からネジ締めすると可動片43はブラケット41に螺着さ
れ、支持ピン30の強固な抱持状態が得られる。なお、前
記フック42及びキャッチャ43は、以上の形態例に限定さ
れるものでないことは言うまでもなく、例えば実開昭５
８−１４０２５５号に示される構造、すなわち図３に示
すような、外側が開放されているフック42や、スプリン
グ49の弾性力によって押し付け力が付与された可動片50
がその反力で支持ピン30を抱持するキャッチャ43等でも
良い。In the bracket 41 of the bucket 4, a hook 42 is formed on the side facing the arm 1, and a catcher 43 is formed on the side facing the rod 3. The hook 42 is engaged with the support pin 40, and the catcher 43 holds the support pin 30.Each of the catchers 43 engages and holds the projecting portions at both ends of the support pins 40, 30. 41 forming positions are set. The hook 42 has a shape having a pin hole whose one inner side is released. Catcher 43
A movable piece 47 having a released pin hole, a support pin receiving base 44 at a lower portion continuous with the pin hole, and an overhang portion 45 having a screw hole 46 at an upper portion is formed by a bracket 41.
Is rotatably mounted on the shaft. In this configuration, the support pins
When the pressing force of 30 is received by the pedestal 41, the movable piece 47 rotates, the protruding portion 45 descends and closes the open portion, whereby the support pin 30 is
Will be held. In the bracket 41, a pin receiving seat 43 is formed at a position where the support pin 30 is finally received, and a screw hole (continuous with the screw hole 46) is formed on a contact surface with the lowered projecting portion 45. (Not shown) is formed, and when the support pin 30 is held by the movable piece 47, the support pin 30 is seated in the seat 48, and in this state, the screw hole of the overhang portion 45 is formed.
When the screw is tightened from 46, the movable piece 43 is screwed to the bracket 41, and a strong holding state of the support pin 30 is obtained. Needless to say, the hook 42 and the catcher 43 are not limited to the above embodiment.
No. 8,140,255, that is, a movable piece 50 to which a pressing force is applied by an elastic force of a spring 49 or a hook 42 whose outside is open as shown in FIG.
However, a catcher 43 or the like holding the support pin 30 by the reaction force may be used.
【００２０】このような構造の本形態例のバケット４の
取付は次のようになる。The mounting of the bucket 4 of this embodiment having such a structure is as follows.
【００２１】まず前記支持ピン40をブラケット41のフッ
ク42に係止し、次に支持ピン30をキャッチャ43の受け台
41に押し付ける。上述のように、支持ピン30はブラケッ
ト41の座48に収まり、回動した可動片43の張出部46に抱
持される。この状態で、張出部46のネジ孔46からネジ締
めすれば支持ピン30は前記座48において確実に固定さ
れ、この動作によってバケット４の取付は完了する。バ
ケット４を外す際は、上記作業と逆の動作を行えばよ
い。すなわち、この構造によれば、他のバケット等に交
換するにあたって、図５に示す従来構造のように、ネジ
孔合わせを要することはまったく不要となり、ネジの締
め外しによってきわめて簡単にバケット４の脱着が行え
るものとなっている。First, the support pin 40 is engaged with the hook 42 of the bracket 41, and then the support pin 30 is
Press on 41. As described above, the support pin 30 is received in the seat 48 of the bracket 41, and is held by the projecting portion 46 of the rotated movable piece 43. In this state, if the screw is tightened through the screw hole 46 of the overhang portion 46, the support pin 30 is securely fixed in the seat 48, and the mounting of the bucket 4 is completed by this operation. When the bucket 4 is removed, an operation reverse to the above operation may be performed. That is, according to this structure, when replacing the bucket 4 with another bucket or the like, unlike the conventional structure shown in FIG. 5, it is not necessary to adjust the screw holes at all. Can be performed.
【００２２】そして、本形態例では、支持ピン30,40に
よるアーム１先端及びロッド３先端に対する軸着構造
と、支持ピン30,40に対するバケット４基端部（ブラケ
ット41）の係止・抱持構造とによって、支持ピン30,40
を介してアーム１先端及びロッド３先端とバケット４基
端部が直接連結されるものとなっており、バケット４回
転半径は、図５に示す従来構造とまったく同様のものと
なっている。すなわち、実開昭５８−１４０２５５号の
ように、アーム先端軸着部とバケット基端部軸着部とが
ずれるような構造ではないので、それと比べてバケット
４の回転半径が小さくなっている。したがって、実開昭
５８−１４０２５５号のように、掘削力が低減すること
がなく、また外力が特定部に大きく付加されるようなこ
ともない。またアーム１先端及びロッド３先端とバケッ
ト４とを連結する支持ピンは30,40の２個で足り、重量
の増加もキャッチャ43の諸部品程度ですむので、バケッ
ト４基端部にかかる外力付加もわずかの程度となる。In this embodiment, the support pins 30 and 40 are used to attach the shaft 1 to the tip of the arm 1 and the tip of the rod 3, and the base pins (bracket 41) of the bucket 4 are held and held by the support pins 30 and 40. Depending on the structure, the support pins 30, 40
The distal end of the arm 1 and the distal end of the rod 3 are directly connected to the proximal end of the bucket 4 via a shaft. The turning radius of the bucket 4 is exactly the same as that of the conventional structure shown in FIG. That is, since the structure is not such that the shaft end portion of the arm and the shaft end portion of the bucket are displaced from each other as in Japanese Utility Model Application Laid-Open No. 58-140255, the radius of rotation of the bucket 4 is smaller than that. Therefore, unlike the Japanese Utility Model Application Laid-Open No. 58-140255, the excavating force is not reduced, and the external force is not greatly applied to the specific portion. In addition, two support pins 30 and 40 are sufficient to connect the tip of the arm 1 and the tip of the rod 3 to the bucket 4, and the increase in weight is only required for various parts of the catcher 43, so that an external force is applied to the base end of the bucket 4. To a small extent.
【００２３】なお、本形態例はバケット４のブラケット
41にフック42及びキャッチャ43を形成させる構成として
いるが、バケット４のブラケット41間に支持ピン30,40
を横架させアーム４先端及びロッド３先端にフック42及
びキャッチャ43を形成させる構成でも、アーム１先端及
びロッド３先端とバケット４基端部との双方にフック42
及びキャッチャ43を形成させ、それぞれのフック42及び
キャッチャ43を支持ピン30,40に係止・抱持させる構成
でも、いずれにしても、支持ピン30,40を介してアーム
１先端及びロッド３先端とバケット４基端部とが直接連
結される構成であれば、本発明の範囲に包含されるもの
である。In this embodiment, the bracket of the bucket 4 is used.
Although the hook 41 and the catcher 43 are formed on the bracket 41, the support pins 30, 40 are provided between the brackets 41 of the bucket 4.
And the hook 42 and the catcher 43 are formed at the tip of the arm 4 and the tip of the rod 3, the hook 42 is attached to both the tip of the arm 1 and the tip of the rod 3 and the base end of the bucket 4.
And the catcher 43 is formed, and the hook 42 and the catcher 43 are locked and held by the support pins 30 and 40. In any case, the tip of the arm 1 and the tip of the rod 3 are supported via the support pins 30 and 40. If the structure is directly connected to the base end of the bucket 4, it is included in the scope of the present invention.
【００２４】[0024]
【発明の効果】以上説明したように、この発明に係る建
設機械の作業具交換構造によれば、作業具交換作業はき
わめて簡単に行えるだけでなく、掘削力が低下すること
がない、重量増加も最小限ですむ、作業時の外力も所定
部位にかかるということがない等のきわめて顕著な効果
が得られるものとなっている。As described above, according to the construction tool exchanging structure for a construction machine according to the present invention, exchanging work implements can be performed extremely easily, and excavation force does not decrease, and weight increase can be prevented. In addition, extremely remarkable effects such as minimization of external force and no external force during work being applied to a predetermined portion can be obtained.
【図１】本発明の実施形態例を示し、バケットを取り付
ける前の状態の説明図である。(a)は側面図、(b)は背面
図、(c)はアームの正面図である。FIG. 1 shows an embodiment of the present invention and is an explanatory diagram of a state before a bucket is attached. (a) is a side view, (b) is a rear view, and (c) is a front view of the arm.
【図２】本発明の実施形態例を示し、バケットを取り付
けた状態の側面図である。FIG. 2 is a side view showing the embodiment of the present invention, with a bucket attached.
【図３】フック及びキャッチャの他の形態例（実開昭５
８−１４０２５５号）を示し、(a)はキャッチャに支持
ピンが抱持される前の状態の説明図、(b)は(a)の次工程
であって、抱持される直前の状態の説明図である。FIG. 3 shows another example of a hook and a catcher (shown in Japanese Utility Model Laid-Open No. 5).
No. 8-140255), (a) is an explanatory view of a state before the support pin is held by the catcher, and (b) is the next step of (a) and is a state immediately before being held. FIG.
【図４】一般的な建設機械の構造を示す側面図である。FIG. 4 is a side view showing a structure of a general construction machine.
【図５】従来の建設機械のバケット取付構造を示す説明
図である。FIG. 5 is an explanatory view showing a conventional bucket mounting structure of a construction machine.
【図６】実開昭５８−１４０２５５号に示されるバケッ
ト取付構造を示し、(a)はバケットを取り付ける前の状
態の説明図、(b)はバケットを取り付けた状態の説明図
である。6A and 6B show a bucket mounting structure disclosed in Japanese Utility Model Laid-Open No. 58-140255, in which FIG. 6A is an explanatory view showing a state before the bucket is mounted, and FIG. 6B is an explanatory view showing a state in which the bucket is mounted.
１ アーム ２ 油圧シリンダ ３ ロッド ４ バケット ５ サポート部材 ７ サポート部材 10,20,30,40 支持ピン 42 フック 43 キャッチャ DESCRIPTION OF SYMBOLS 1 Arm 2 Hydraulic cylinder 3 Rod 4 Bucket 5 Support member 7 Support member 10,20,30,40 Support pin 42 Hook 43 Catcher
Claims (2)
作業具基端部とが、それぞれ支持ピンを介して直接連結
され、その連結部となる前記アーム先端及びロッド先端
または／並びに前記作業具基端部に、一の支持ピンを係
止するフックと、他の支持ピンを係脱自在に抱持するキ
ャッチャとをそれぞれ形成させたことを特徴とする建設
機械の作業具交換構造。1. An arm tip and a rod tip of a working unit,
A work tool base end portion is directly connected via a support pin, and a hook for locking one support pin to the arm tip and the rod tip or / and the work tool base end serving as the connection portion. And a catcher for detachably holding another support pin.
ポート部材を横架し、該サポート部材と、前記両部材先
端とを支持ピンでそれぞれ軸着させる一方、作業具基端
部に、前記一の支持ピンを係止するフックと、前記他の
支持ピンを係脱自在に抱持するキャッチャを形成させた
ことを特徴とする請求項１の建設機械の作業具交換構
造。2. A support member is laid horizontally on an arm tip and a rod tip of a working unit, and the support member and the two member tips are pivotally attached to each other with a support pin. 2. The work tool exchange structure for a construction machine according to claim 1, wherein a hook for locking one support pin and a catcher for holding the other support pin removably are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13940398A JP3378196B2 (en) | 1998-05-21 | 1998-05-21 | Work tool exchange structure for construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13940398A JP3378196B2 (en) | 1998-05-21 | 1998-05-21 | Work tool exchange structure for construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11323997A true JPH11323997A (en) | 1999-11-26 |
| JP3378196B2 JP3378196B2 (en) | 2003-02-17 |
Family
ID=15244460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13940398A Expired - Fee Related JP3378196B2 (en) | 1998-05-21 | 1998-05-21 | Work tool exchange structure for construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3378196B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2830166A1 (en) * | 2001-09-28 | 2003-04-04 | Cochet Sa | Self-locking hitch for attaching machine to tractor comprises frame on tractor carrying two horizontal bars, frame on machine having hook fitting over upper bar and hook on catch fitting over lower bar |
-
1998
- 1998-05-21 JP JP13940398A patent/JP3378196B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2830166A1 (en) * | 2001-09-28 | 2003-04-04 | Cochet Sa | Self-locking hitch for attaching machine to tractor comprises frame on tractor carrying two horizontal bars, frame on machine having hook fitting over upper bar and hook on catch fitting over lower bar |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3378196B2 (en) | 2003-02-17 |
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