JPS5968438A - Hydraulic clamshell bucket - Google Patents

Hydraulic clamshell bucket

Info

Publication number
JPS5968438A
JPS5968438A JP17906482A JP17906482A JPS5968438A JP S5968438 A JPS5968438 A JP S5968438A JP 17906482 A JP17906482 A JP 17906482A JP 17906482 A JP17906482 A JP 17906482A JP S5968438 A JPS5968438 A JP S5968438A
Authority
JP
Japan
Prior art keywords
frame
cylinder
bracket
hydraulic cylinder
rod
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
Application number
JP17906482A
Other languages
Japanese (ja)
Other versions
JPH0313376B2 (en
Inventor
Shinji Tamaoki
玉置 晋司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP17906482A priority Critical patent/JPS5968438A/en
Publication of JPS5968438A publication Critical patent/JPS5968438A/en
Publication of JPH0313376B2 publication Critical patent/JPH0313376B2/ja
Granted legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; 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
    • E02F3/36Component parts
    • E02F3/40Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

PURPOSE:To miniaturize an oil-pressure cylinder by a method in which a bucket- opening or closing link is connected to a bracket provided to a frame in a vertically movable manner and the bracket is vertically moved by a hydraulic cylinder in such a way as to receive forces acting on the link by the frame. CONSTITUTION:Shells 3a and 3b are provided to the lower end of a frame 13 having openings on its left and right-handed both sides and also vertically long guide grooves 16 on its front and back sides. A hydraulic cylinder 17 is attached to the inside of the frame 13 by turning its rod 17a downwards, and guides 22 and 23 vertically moving along the guide groove 16a are provided to the lower end of the rod 17a. A bracket 25b whose upper left and right-handed ends are projected from the left and right-handed openings of the frame 13 is attached to the shaft 23, and links 5a and 5b for opening or closing the bucket are connected to the bracket 25b. When the hydraulic cylinder 17 is operated, the buckets 3a and 3b opens or closes through the bracket 25b and the links 5a and 5b, but the force on the links is received by the frame 13 and is not applied to the cylinder.

Description

【発明の詳細な説明】 本発明は、油圧シリンダによって開閉される油圧式クラ
ムシェルパケットに関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic clamshell packet that is opened and closed by a hydraulic cylinder.

従来の油圧式クラムシェルパケットは、第1図まだは第
2図に示すように構成されている。第1図のものは、ロ
ッド1aの上端が作業機械のアーム等に連結される両ロ
ッド式の油圧シリンダ1のシリンダチューブ1bの両側
にブラケット2 a +2bを設け、左右のシェル3a
 + 3bに設けたブラケット4a、4bと前記ブラケ
ット2 a + 2 bとの間にそれぞれリンク5a 
、5bを両端を軸6 a + 7 aと6b、、7bで
連結して介装し、前記ブラケット4 a、、 4 b間
に軸8 a 、’8 bによって両端を連結したブロッ
ク9に前記ロッド1aの下端部を回動可能に連結して々
るものであり、油圧シリンダ1のピストンICよシ上方
の室に作動油を供給すればシリンダチューブ1bが上昇
してシェル3 a + 、3 bが開き、ピストンIC
よシ下方の室に作動油を供給すれば、シリンダチューブ
1bが下降してシェル3a、3bが閉じるように構成さ
れたものである。
A conventional hydraulic clamshell packet is constructed as shown in FIG. 1 and FIG. 2. The one in Fig. 1 has brackets 2a + 2b on both sides of the cylinder tube 1b of a double-rod type hydraulic cylinder 1 whose upper end of the rod 1a is connected to an arm of a working machine, etc., and left and right shells 3a.
A link 5a is provided between the brackets 4a and 4b provided on +3b and the bracket 2a+2b, respectively.
, 5b are interposed with both ends connected by shafts 6a + 7a and 6b, 7b, and the block 9 is connected between the brackets 4a, 4b by shafts 8a, '8b. The lower end of the rod 1a is rotatably connected, and when hydraulic oil is supplied to the chamber above the piston IC of the hydraulic cylinder 1, the cylinder tube 1b rises and the shells 3 a + , 3 b opens and the piston IC
When hydraulic oil is supplied to the lower chamber, the cylinder tube 1b is lowered and the shells 3a and 3b are closed.

第2図のものは、片ロッド式の油圧シリンダ10のロッ
ド10aの上端近傍を両側に溝を設けたフレーム11の
上端部に回動可能に連結し、シリンダチューブ10bは
フレーム11内で上下動自在となるように装着し、シリ
ンダチューブ1obの両側に設けたブラケッ)2a 、
2bとシェル3a + 3 bのブラケットとは前記同
様にリンク5a5bおよび軸6a、6bと7 a + 
713で連結すると共に、ブラケット2 a p 2 
bにはフレーム11の両側に接して転動するガイドロー
ラ12a、12bを設け、フレーム11の下端はブラケ
ット4a r 4 bと軸8 a r 8 bによって
連結したものであり、このパケットも油圧シリンダ1o
を作動させることによシ、シリンダチューブi0bが上
下し、パケットが開閉され、この上下動の際にガイドロ
ーラ12a、12bがフレーム110両側に接して転動
し、シリンダチューブ10bをガイドする。
In the one shown in FIG. 2, the vicinity of the upper end of a rod 10a of a single-rod type hydraulic cylinder 10 is rotatably connected to the upper end of a frame 11 having grooves on both sides, and the cylinder tube 10b is movable up and down within the frame 11. Brackets) 2a installed on both sides of the cylinder tube 1ob so as to be freely mounted,
2b and shells 3a + 3b brackets are links 5a5b and shafts 6a, 6b and 7a +
713, and bracket 2 a p 2
b is provided with guide rollers 12a and 12b that roll in contact with both sides of the frame 11, and the lower end of the frame 11 is connected to a bracket 4a r 4 b and a shaft 8 a r 8 b, and this packet is also connected to a hydraulic cylinder. 1o
By operating the cylinder tube i0b, the cylinder tube i0b moves up and down to open and close the packet, and during this up and down movement, the guide rollers 12a and 12b roll in contact with both sides of the frame 110 to guide the cylinder tube 10b.

このような従来のクラムシェルパケットは、パケット開
閉用シリンダのシリンダチューブ1b。
Such a conventional clamshell packet has a cylinder tube 1b of a cylinder for opening and closing the packet.

]、 Obがフランジ2a 、2bと軸6 a + 6
 bを介してリンク5a 、5bに連結されているため
、リンク5a 、5bに作用する力に差がある場合には
その力がシリンダチューブlb 、10bおよびシリン
ダロッドIa 、10aにかかるため、油圧シリンダ1
,10を大型で重量の犬なるものとせざるを得ない。ま
た、シリンダチューブ1b、10bを上下させる構造で
あるから、ビントンlc。
], Ob is flanges 2a, 2b and shaft 6a + 6
The hydraulic cylinder 1
, 10 has no choice but to be a large and heavy dog. Also, since the cylinder tubes 1b and 10b are moved up and down, it is a Vinton LC.

10cの上下の室に連通ずる油道をシリンダロッド1 
a + 10 a内に形成しなければならないので、さ
らに油圧シリンダが大型、重量物となシ、価格が高くな
る。また、クラムシェルパケットの場合、掘削時(パケ
ットを閉じる時)に比べて排土時(パケットを開く時)
にはパケットを速く開く方が作業能率および泥はけが良
くなるが、第1図の場合にはロッドの速度はパケットの
開き、閉じとも同じであるだめ、作業能率が悪い。
Cylinder rod 1 connects the oil pipe that communicates with the upper and lower chambers of 10c.
Since it has to be formed within a + 10 a, the hydraulic cylinder is also large and heavy, which increases the price. In addition, in the case of clamshell packets, the time of excavation (when the packet is closed) is compared to the time of soil removal (when the packet is opened).
However, in the case of FIG. 1, the speed of the rod is the same both when the packet is opened and closed, so the work efficiency is poor.

本発明は、以上の点に鑑み、パケット開閉用油圧シリン
ダを軽量化でき、油道の形成も容易化され、価格の低下
が達成できる構成の油圧式クラムシェルパケットを提供
することを目的とする。
In view of the above points, it is an object of the present invention to provide a hydraulic clamshell packet having a structure in which the hydraulic cylinder for opening and closing the packet can be made lighter, the formation of an oil passage can be made easier, and the price can be reduced. .

この目的を達成するため、本発明の油圧式クラムシェル
パケットは、左右両側面に開口部を有し、前後面に縦長
のガイド溝を設け、下端部に左右のシェルの枢支部を有
するフレームと、該フレームの上端部にシリンダチュー
ブが回動可能に結合されかつシリンダロッドを下向きに
して該フレーム内に取付けられた片ロッド式の油圧シリ
ンダと、該油圧シリンダのシリンダロッドの端部に取付
けられて前記ガイド溝に沿って上下動するガイド部材と
、該シリンダロッドの端部に取付けた軸に下端部が枢着
され上部の左右端部が前記フレームの左右の開口部より
突出し、左右のパケット開閉用リンクと軸を介して連結
されたブラケットと、該ブラケットの左右方向の傾きを
防止しつつフレームに沿って上下動させるガイド手段と
によシ構成したことを特徴とする。
In order to achieve this objective, the hydraulic clamshell packet of the present invention has a frame having openings on both left and right sides, longitudinal guide grooves on the front and rear surfaces, and pivoting parts for the left and right shells at the lower end. , a single-rod hydraulic cylinder having a cylinder tube rotatably connected to the upper end of the frame and installed in the frame with the cylinder rod facing downward; and a single-rod hydraulic cylinder installed at the end of the cylinder rod of the hydraulic cylinder. a guide member that moves up and down along the guide groove; a lower end is pivoted to a shaft attached to the end of the cylinder rod; the left and right ends of the upper part protrude from the left and right openings of the frame; It is characterized by comprising a bracket connected to an opening/closing link via a shaft, and guide means for vertically moving the bracket along the frame while preventing the bracket from tilting in the left-right direction.

以下本発明の一実施例を第3図ないし第6図により説明
する。13はフレームであシ、該フレームは、前後2枚
の板材13a、13bに間隔を持たせて上端部に油圧シ
リンダ取付用リング14を一体に設け、下端部にはシェ
ル3 a + 3 bを軸8 a + 8 bによシ枢
支する枢支部15を有することによシ、左右両側面に開
口部を有する構造とし、前後の板材13a、1’3bの
下部には縦長のガイド溝16a、16bを設けてなる。
An embodiment of the present invention will be described below with reference to FIGS. 3 to 6. Reference numeral 13 denotes a frame, and the frame has two front and rear plates 13a and 13b integrally provided with a hydraulic cylinder mounting ring 14 at the upper end with a gap between them, and a shell 3a + 3b at the lower end. By having a pivot part 15 that is pivoted on the shaft 8a + 8b, it has a structure with openings on both left and right sides, and a vertically elongated guide groove 16a is provided at the bottom of the front and rear plates 13a and 1'3b. , 16b are provided.

17はパケット開閉用油、圧シリンダであり、該油圧シ
リンダは片ロツド式であり、そのシリンダロッド17a
を下向きにし、シリンダチューブ17bの頂部には円形
のフランジ17cを設け、該7ランジ17cを前記油圧
シリンダ取付用リング14内の段付部14aに載せ、該
リング14上にボルト18によって抜は止め用リング1
9を固定することによシ、シリンダチューブ17bはフ
レーム13に回動自在にかつ若干の傾動が許容されるよ
うに取付けられている。該油圧シリンダ17の頂部には
、機械のアーム等の先端に連結する穴20を有する吊部
材21が一体に設けである。
Reference numeral 17 denotes an oil and pressure cylinder for opening and closing the packet, and the hydraulic cylinder is a single rod type, and its cylinder rod 17a
A circular flange 17c is provided at the top of the cylinder tube 17b, and the seven flange 17c is placed on the stepped part 14a in the hydraulic cylinder mounting ring 14, and the bolt 18 is placed on the ring 14 to prevent removal. ring 1
By fixing the cylinder tube 9, the cylinder tube 17b is attached to the frame 13 so as to be rotatable and to allow slight tilting. The top of the hydraulic cylinder 17 is integrally provided with a hanging member 21 having a hole 20 connected to the tip of a machine arm or the like.

前記シリンダロッド17aの下端にはボス22が固着さ
れ、該ボス22には軸23が嵌着され、該軸23の両端
には前記ガイド溝16a、16bに沿って上下動させる
ガイド部材とし7てのガイドローラ24a 、24bが
数句けである。
A boss 22 is fixed to the lower end of the cylinder rod 17a, a shaft 23 is fitted to the boss 22, and a guide member 7 is provided at both ends of the shaft 23 to move up and down along the guide grooves 16a, 16b. There are only a few guide rollers 24a and 24b.

25 a + 25 bは前記軸23に下端を枢着した
逆三角形の板状をなすブラケットでおり、これらのブラ
ケットの上端の左右両端はフレーム13の左右の開口部
、すなわち板部材1.3 a 、 13 b間から側方
に突出し、左右の突出部間には該突出部から前後端が突
出するように軸26a 、26bが貫設してあシ、軸2
6a、26bの各両端にはそれぞれフレームのガイド面
、すなわち板部材13a + 1’3 bの両側面に沿
って擦動可能にブラケットの傾きを防ぐガイド部材27
a〜27dが取付けである。ブラケッ)25a 、25
bは軸26a。
25a + 25b are inverted triangular plate-shaped brackets whose lower ends are pivotally connected to the shaft 23, and the left and right ends of the upper ends of these brackets are connected to the left and right openings of the frame 13, that is, the plate members 1.3a. , 13b, and shafts 26a and 26b are provided between the left and right protrusions so that their front and rear ends protrude from the protrusions.
Guide members 27 are provided at both ends of each of the brackets 6a and 26b so as to be able to slide along the guide surfaces of the frame, that is, both sides of the plate members 13a + 1'3b, to prevent the bracket from tilting.
A to 27d are installation. bracket) 25a, 25
b is the axis 26a.

26bを介してパケット開閉用リンク5a 、 5bに
連結されている。28a 、28bはブラケット25a
、25bを一体化するロッドである029a、29bは
油圧シリンダ17のロンド室、ボトム室にそれぞれ接続
される作動油の給排管である。
It is connected to packet opening/closing links 5a and 5b via 26b. 28a and 28b are brackets 25a
, 25b, which are rods 029a and 29b, are hydraulic oil supply and discharge pipes connected to the rond chamber and bottom chamber of the hydraulic cylinder 17, respectively.

このパケットにおいて、作業機械のアーム等に吊部材2
1を連結してω下げ、給排管29bから油圧シリンダ2
7のボトム室に圧油を供給すれば、シリンダロッド17
aが押し下げられ、シェル3a + 3 bは軸8 a
 + 8 bを中心に閉じ方向に回動する。反対に、給
排管29aから油圧シリンダのロンド室に圧油を供給す
れば、シリンダロッド17aが押し上げられ、シェル3
a、3bは軸8 a +8bを中心に開方向に回動する
。このような開閉の際に、シェル3争と3bの反力の差
等によシリンジ5aと5bに加わる力に差が生じた場合
には、軸26a 、26bを介してブラケット25a 
、 25bに力がかかり、ブラケッ)25a、25bを
左右方向に傾けようとするが、ガイド部材27a〜27
dがフレーム13の両側面に接するだめ、ブラケット2
5a 、25bの傾きが防止されると共ニ、フレーム1
3でその力が受けられる0まだ、ブラケット25a、2
5bがシリンダロッド17aの端部に対して軸23を介
して回動可能に連結されているので、リンク5 a r
 jbにかかる力がシリンダロッド17aにかかること
が防止される。ガイドローラ24 a 、 24bはフ
レームのガイド溝16a、16bに沿って上下動するこ
とにより、シリンダロッド17aが垂直に上下動するよ
うにガイドし、パケット開閉を円滑化する役目を果たす
。また、パケットを閉じる際には油圧シリンダ17のボ
トム室に圧油が供給され、開く際にはロンド室に供給さ
れるから、ボトム室とロンド室の受圧面積の差によって
閉じる際に比べて開く際の方が約2倍程度速くなる。
In this packet, a hanging member 2 is attached to the arm of the working machine, etc.
1 and lower ω, and connect the hydraulic cylinder 2 from the supply/discharge pipe 29b.
If pressure oil is supplied to the bottom chamber of cylinder rod 17,
a is pushed down, and shell 3a + 3b is attached to axis 8a
Rotate in the closing direction around +8 b. On the other hand, if pressure oil is supplied from the supply/discharge pipe 29a to the iron chamber of the hydraulic cylinder, the cylinder rod 17a is pushed up and the shell 3
a and 3b rotate in the opening direction around the shaft 8a +8b. During such opening and closing, if there is a difference in the forces applied to the syringes 5a and 5b due to a difference in reaction force between the shells 3 and 3b, the bracket 25a is
, 25b tries to tilt the brackets 25a and 25b in the left and right direction, but the guide members 27a to 27
d is in contact with both sides of the frame 13, the bracket 2
When the tilting of 5a and 25b is prevented, the frame 1
The force can be received by the brackets 25a and 2.
5b is rotatably connected to the end of the cylinder rod 17a via the shaft 23, so that the link 5a r
The force applied to cylinder rod 17a is prevented from being applied to cylinder rod 17a. The guide rollers 24a and 24b move up and down along the guide grooves 16a and 16b of the frame, thereby guiding the cylinder rod 17a to vertically move up and down, and serve to facilitate opening and closing of the packet. Also, when the packet is closed, pressure oil is supplied to the bottom chamber of the hydraulic cylinder 17, and when it is opened, it is supplied to the rond chamber, so the difference in pressure receiving area between the bottom chamber and the rond chamber causes it to open more than when it is closed. It will be about twice as fast.

なお、本発明を実施するに肖っては、上記実施例に限ら
ず種々の変更、付加が可能である。例えばフレーム13
の上部に吊部材を回動可能に取付けて−もよい。また、
ブラケッ)25a 、25bは一枚の板部材の曲成等に
よって製作でき、該ブラケットやフレーム13等も補強
リプ等の補強手段を有する構造とすることにより、薄肉
化が可能である。まだ前記ガイド部材27a〜27dと
してローラを用い、ガイドローラ24a 、24bの代
シに非回転のガイド部材を用いることもできる。
Note that in carrying out the present invention, various changes and additions can be made in addition to the above-mentioned embodiments. For example, frame 13
A hanging member may be rotatably attached to the upper part of the holder. Also,
The brackets 25a and 25b can be manufactured by bending a single plate member, and the brackets, frame 13, etc. can also be made thinner by having a structure having reinforcing means such as reinforcing lips. Alternatively, rollers may be used as the guide members 27a to 27d, and non-rotating guide members may be used in place of the guide rollers 24a and 24b.

以上述べたように、本発明においては、パケット開閉用
リンクにかかる力がフレームで受けられ、油圧シリンダ
に加わらない構造となっているので、油圧シリンダの剛
性が小さくてすみ、小形軽量化が達成される。また、油
圧シリンダとして片ロツド式のものを用い、シリンダチ
ー−ブ側が上となる構造でフレームに取付けたので、シ
リンダロッドに油道を加工するという特殊な加工を必要
とせず、一般的な油圧シリンダを用いることができ、こ
のことも油圧シリンダの軽量化に寄与し、かつパケット
製作費の低価格化に寄与する。また、パケットによる掘
削時(閉じる時)は受圧面積の大きいシリンダのボトム
側に圧油を送り、排土時(開ける時)には受圧面積の小
さいシリンダのロンド側に圧油を送るので、掘削時に大
きな掘削力が出せ、排土時に速く排土しうると同時に泥
落ちがよくなるので、能率が向上する。
As described above, in the present invention, the structure is such that the force applied to the link for opening and closing the packet is received by the frame and is not applied to the hydraulic cylinder, so the rigidity of the hydraulic cylinder can be small, achieving a reduction in size and weight. be done. In addition, since we used a single-rod type hydraulic cylinder and installed it on the frame with the cylinder cheek side facing up, there was no need for special processing such as machining an oil path on the cylinder rod, and it could be used as a general hydraulic cylinder. can be used, which also contributes to reducing the weight of the hydraulic cylinder and to lowering the packet manufacturing cost. In addition, when excavating with a packet (when closing), pressure oil is sent to the bottom side of the cylinder with a large pressure receiving area, and when removing earth (when opening), pressure oil is sent to the rond side of the cylinder with a small pressure receiving area. Efficiency is improved because a large digging force can be generated at times, soil can be removed quickly, and mud can be removed more easily.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図および第2図はそれぞれ従来のクラムシェルパケ
ットを示す正面図、第3図は本発明によるクラムシェル
パケットの一実施例を示す正面図、第4図は第3図のA
−A断面図、第5図は第3図のB−B断面図、第6図は
第5図のC−C断面図である。 3 a r 3 b・・・シェル、5a、5b・・・リ
ンク、13・・・フレーム、15・・・枢支フレーム、
’16a。 16b・・・ガイド溝、17・・・油圧シリンダ、23
・・・軸、24 a 、 24 b−ガイドローラ、2
5 a + 25 b−ブラケット、26 a ? 2
6 b 、=・軸、27a〜27d・・・ガイド部材 特許出願人 日立建機株式会社 代理人 弁理士 秋 本 正 実 代理人 弁理士 若 1)勝 −
1 and 2 are front views showing conventional clamshell packets, FIG. 3 is a front view showing an embodiment of the clamshell packet according to the present invention, and FIG. 4 is a front view showing a conventional clamshell packet.
-A sectional view, FIG. 5 is a BB sectional view in FIG. 3, and FIG. 6 is a CC sectional view in FIG. 3 a r 3 b...shell, 5a, 5b...link, 13...frame, 15...pivot frame,
'16a. 16b...Guide groove, 17...Hydraulic cylinder, 23
...shaft, 24a, 24b-guide roller, 2
5 a + 25 b-bracket, 26 a? 2
6 b, = shaft, 27a-27d... Guide member patent applicant Hitachi Construction Machinery Co., Ltd. Agent Patent attorney Tadashi Akimoto Actual agent Patent attorney Waka 1) Masaru -

Claims (1)

【特許請求の範囲】[Claims] 左右両側面に開口部を有し、前後面に縦長のガイド溝を
設け、下端部に左右のシェルの枢支フレームを有するフ
レームと、該フレームの上端部にシリンダチューブが回
動可能に結合され、かつシリンダロッドを下向きにして
該フレーム内に取付けられた片ロツド式の油圧シリンダ
と、該油圧シリンダのシリンダロッドの端部に取付けら
れて前記ガイド溝に沿って上下動するガイド部材と、該
シリンダロッドの端部に取付けた軸に下端部が枢着され
上部の左右端部が前記フレームの左右の開口部よシ突出
し、左右のパケット開閉用リンクと軸を介して連結され
たブラケットと、該ブラケットの左右方向の傾きを防止
しつつフレームに沿って上下動させるガイド手段とによ
シ構成したことを特徴とする油圧式クラムシェルパケッ
ト。
A frame having openings on both the left and right sides, vertical guide grooves on the front and rear surfaces, and a pivot frame for the left and right shells at the lower end, and a cylinder tube rotatably coupled to the upper end of the frame. , a single-rod hydraulic cylinder mounted in the frame with the cylinder rod facing downward; a guide member mounted on the end of the cylinder rod of the hydraulic cylinder and movable up and down along the guide groove; a bracket whose lower end is pivoted to a shaft attached to the end of the cylinder rod, whose upper left and right ends protrude from the left and right openings of the frame, and which is connected to left and right packet opening/closing links via the shaft; A hydraulic clamshell packet comprising a guide means for vertically moving the bracket along the frame while preventing the bracket from tilting in the left-right direction.
JP17906482A 1982-10-14 1982-10-14 Hydraulic clamshell bucket Granted JPS5968438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17906482A JPS5968438A (en) 1982-10-14 1982-10-14 Hydraulic clamshell bucket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17906482A JPS5968438A (en) 1982-10-14 1982-10-14 Hydraulic clamshell bucket

Publications (2)

Publication Number Publication Date
JPS5968438A true JPS5968438A (en) 1984-04-18
JPH0313376B2 JPH0313376B2 (en) 1991-02-22

Family

ID=16059471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17906482A Granted JPS5968438A (en) 1982-10-14 1982-10-14 Hydraulic clamshell bucket

Country Status (1)

Country Link
JP (1) JPS5968438A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104925663A (en) * 2015-06-16 2015-09-23 安庆市华鑫重工股份有限公司 Self-stabilizing type hydraulic grab bucket mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4296322A4 (en) 2021-04-16 2024-04-03 Konica Minolta, Inc. Ink set and ink-jet recording method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104925663A (en) * 2015-06-16 2015-09-23 安庆市华鑫重工股份有限公司 Self-stabilizing type hydraulic grab bucket mechanism

Also Published As

Publication number Publication date
JPH0313376B2 (en) 1991-02-22

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