JPH0324682Y2 - - Google Patents
Info
- Publication number
- JPH0324682Y2 JPH0324682Y2 JP4227783U JP4227783U JPH0324682Y2 JP H0324682 Y2 JPH0324682 Y2 JP H0324682Y2 JP 4227783 U JP4227783 U JP 4227783U JP 4227783 U JP4227783 U JP 4227783U JP H0324682 Y2 JPH0324682 Y2 JP H0324682Y2
- Authority
- JP
- Japan
- Prior art keywords
- boom
- arm
- bell crank
- support shaft
- valve
- 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.)
- Expired
Links
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Mechanically-Actuated Valves (AREA)
Description
【考案の詳細な説明】
本考案は、前後左右に揺動自在な第１及び第２
レバーを、旋回台用操作弁、ブーム用操作弁、ア
ーム用操作弁、バケツト用操作弁に対して、夫々
支軸に回転自在に取付けられたベルクランクを有
するロツド式連動機構により連動連結し、各レバ
ーの前後揺動操作と左右揺動操作とにより夫々２
個の操作バルブを各別に操作できるようにしたシ
ヨベル作業車の操作装置に関する。[Detailed explanation of the invention] The present invention has a first and a second
The lever is interlocked and connected to the operating valve for the swivel base, the operating valve for the boom, the operating valve for the arm, and the operating valve for the bucket by a rod-type interlocking mechanism having a bell crank rotatably attached to a support shaft, respectively, 2 by the back and forth rocking operation and the left and right rocking operation of each lever.
The present invention relates to an operating device for an excavator work vehicle that allows individual operating valves to be operated individually.
上記シヨベル作業車において、ユーザー側から
の要望に応じてブーム用操作弁とアーム用操作弁
とに対する両レバーの連動関係を変更する必要が
あり、その連動切換を、操作弁の配設順序を変更
すること無く簡便に仕様変更できるようにするた
めに、従来、第５図に示すように、両レバー２
５，２６に各別連動された２本の中継用回転支軸
１８ａ，１８ｂを、前後に位置をズラせた状態で
平行状に配置し、支軸軸芯方向に並設した４個の
操作弁V1，V2，V3，V4のうち中央側に配置した
ブーム用及びアーム用操作弁V3，V2を、それら
と各支軸１８ａ，１８ｂに取付けたベルクランク
２０′，２２′とを連動するための互いに長さの異
なる連動用ロツド２９b′，２９c′を交換する状態
で各支軸１８ａ，１８ｂに対して相互連結切換す
るように構成していたのであるが、２本の回転支
軸１８ａ，１８ｂを必要とするために連動構造が
複雑になると共に大型化し、製作面並びに配設ス
ペース面において不利を招く問題があり、又、連
動切換に際して２本の連結用ロツド２９b′，２９
c′を交換しなければならないために、切換操作能
率が低下する問題があつた。 In the excavator work vehicle mentioned above, it is necessary to change the interlocking relationship of both levers for the boom operation valve and the arm operation valve in response to the user's request, and to change the interlocking, change the arrangement order of the operation valves. In order to be able to easily change the specifications without having to
Two relay rotary support shafts 18a and 18b, which are respectively interlocked with 5 and 26, are arranged in parallel with their positions shifted back and forth, and four operations are arranged in parallel in the direction of the support shaft axis. Among the valves V 1 , V 2 , V 3 , and V 4 , the boom and arm operation valves V 3 and V 2 are arranged on the center side, and the bell cranks 20 ′ and 22 are attached to the support shafts 18 a and 18 b. The structure was such that the interlocking rods 29b' and 29c', which have different lengths for interlocking the shafts 18a and 18b, can be mutually connected to each other by exchanging the interlocking rods 29b' and 29c'. Since the rotation support shafts 18a and 18b are required, the interlocking structure becomes complicated and large, which causes disadvantages in terms of manufacturing and installation space. ',29
Since c' had to be replaced, there was a problem that the efficiency of the switching operation was reduced.
本考案の目的は、上述実情に鑑みて、合理的な
改良により、ブーム用及びアーム用操作弁の各レ
バーに対する相互連動切換可能な連動構造を簡略
化すると共にコンパクト化し、かつ、その連動切
換を容易に行なえるようにする点にある。 In view of the above-mentioned circumstances, the purpose of the present invention is to simplify and compact the interlocking structure capable of interlocking and switching the levers of the boom and arm operation valves through reasonable improvements, and to make the interlocking switchable. The point is to make it easy to do.
本考案の操作装置の特徴構成は、冒記シヨベル
作業車において、一本の前記支軸に全ての前記ベ
ルクランクを取付け、前記旋回台用操作弁とバケ
ツト用操作弁の間にブーム用及びアーム用操作弁
を並置し、前記ベルクランクのうち、前記旋回台
用操作弁に連動させた前記第１レバーに連動する
ブームあるいはアーム用ベルクランク、及び、前
記バケツト用操作弁に連動させた前記第２レバー
に連動するアームあるいはブーム用ベルクランク
を形成するに、それら一方に、前記ブーム用及び
アーム用操作弁の並設方向に並べてブーム用連結
部及びアーム用連結部を備えさせ、かつ、他方に
おいて、前記レバーの一方に連動して前記支軸を
回転させる第１ベルクランク部材、前記ブーム用
連結部の近くで前記支軸と一体回転する第２ベル
クランク部材、及び、前記アーム用連結部の近く
で前記支軸と一体回転する第３ベルクランク部材
を備えさせ、前記ブーム用操作弁に連結したロツ
ドを前記ブーム用連結部及び第２ベルクランク部
材に、かつ、前記アーム用操作弁に連結したロツ
ドを前記アーム用連結部及び第３ベルクランク部
材に、夫々択一的に連結自在に形成したことにあ
り、その作用・効果は次の通りである。 The characteristic configuration of the operating device of the present invention is that, in the above-mentioned excavator work vehicle, all the bell cranks are attached to one of the supporting shafts, and the boom and arm and a boom or arm bell crank that is linked to the first lever that is linked to the swivel platform operating valve, and a boom or arm bell crank that is linked to the bucket operation valve. When forming an arm or a boom bell crank that is linked to two levers, one of them is provided with a boom connection part and an arm connection part arranged in the direction in which the boom and arm operation valves are arranged in parallel, and the other , a first bellcrank member that rotates the support shaft in conjunction with one of the levers, a second bellcrank member that rotates together with the support shaft near the boom connection portion, and the arm connection portion. a third bell crank member that rotates integrally with the support shaft near the support shaft, and a rod connected to the boom operating valve is connected to the boom connecting portion and the second bell crank member, and to the arm operating valve. The connected rod is formed to be selectively connectable to the arm connecting portion and the third bell crank member, respectively, and its functions and effects are as follows.
つまり、一方のレバーに連動するブーム用連結
部及びアーム用連結部に対して、他方のレバーに
支軸を介して連動する第２、第３ベルクランク部
材を各別に近設配置し、ブーム側及びアーム側
夫々においてそれら連結部とそれに近いベルクラ
ンク部材とに対して各操作弁に連結したロツドを
連結切換することにより、ブーム用操作弁とアー
ム用操作弁に対する両レバーの連動関係を切換え
るのである。すなわち、支軸を一方のレバーに対
する連動部材として有効に、かつ合理的に兼用利
用してすべてのベルクランクを一本の支軸に取付
けたことにより、従来構成の如く２本の平行状支
軸を設けるものに比して、支軸数を削減し、連動
構造を大巾に簡略化かつコンパクト化することが
でき、しかも、両操作弁のレバーに対する連動切
換に際して、各操作弁とロツドの連結を解除する
必要が無いから、従来構成の如く２本のロツドを
交換するに比して、連結操作箇所数を減じて、連
動切換操作を大巾に容易にすることができ、全体
として、操作装置の製作面並びに配設スペース面
において極めて有利で、しかも、レバーの操作対
象変更操作性に優れたシヨベル作業車を提供し得
るに至つた。 In other words, the second and third bell crank members, which are linked to the other lever via a support shaft, are separately arranged close to the boom connection part and the arm connection part, which are linked to one lever, and the boom side By switching the connection of the rods connected to each operation valve to the connecting portion and the bell crank member near it on each arm side, the interlocking relationship of both levers with respect to the boom operation valve and the arm operation valve can be changed. be. In other words, by effectively and rationally using the support shaft as an interlocking member for one lever and attaching all the bell cranks to one support shaft, two parallel support shafts are used as in the conventional configuration. The number of support shafts can be reduced and the interlocking structure can be made much simpler and more compact than when the two operating valves are connected to each other. Since there is no need to release the link, compared to replacing two rods in the conventional configuration, the number of connection operations can be reduced and the interlock switching operation can be made much easier, making the operation easier overall. It has now been possible to provide a shovel work vehicle which is extremely advantageous in terms of device manufacturing and installation space, and has excellent operability in changing the object of lever operation.
次に本考案の実施例を例示図に基づいて詳述す
る。 Next, embodiments of the present invention will be described in detail based on illustrative drawings.
第１図に示すように、左右一対のクローラ走行
装置１を備えた機台に、旋回台２を、油圧モータ
３により縦軸芯Ｐ周りで駆動旋回操作自在に取付
け、その旋回台２に搭乗運転部４及び原動部５を
設けると共に、ブーム６、アーム７、及び掘削バ
ケツト８をそれらに架設した油圧シリンダ９，１
０，１１により夫々横軸芯周りで駆動揺動操作自
在に順次連結して構成したバツクホウ装置１２
を、旋回台２に対して油圧シリンダ１３により左
右揺動操作自在なスイングブラケツト１４を介し
て旋回台２の前端に取付け、かつ、油圧シリンダ
１５により昇降操作自在なドーザー装置１６を前
記機台の前端に装備し、もつて、排土作業可能な
掘削作業車を構成してある。 As shown in Fig. 1, a swivel base 2 is attached to a machine base equipped with a pair of left and right crawler traveling devices 1 so as to be freely driven and swiveled around a vertical axis P by a hydraulic motor 3, and a person boarding the swivel base 2 Hydraulic cylinders 9 and 1 are provided with a driving part 4 and a driving part 5, and a boom 6, an arm 7, and an excavation bucket 8 are installed thereon.
A backhoe device 12 configured by sequentially connecting 0 and 11 so that they can be driven and oscillated around the horizontal axis, respectively.
is attached to the front end of the swivel base 2 via a swing bracket 14 that can be freely swung left and right by a hydraulic cylinder 13, and a dozer device 16 that can be freely raised and lowered by a hydraulic cylinder 15 is mounted on the swivel base 2. Equipped at the front end, it is configured as an excavation vehicle capable of soil removal work.
前記旋回台２及びバツクホウ装置１２の駆動操
作構造を構成するに、第２図及び第３図に示すよ
うに、運転ステツプ下方において、板状フレーム
１７上に、旋回台駆動用モータ３、バツクホウ装
置１２のアーム駆動用油圧シリンダ１０、ブーム
駆動用油圧シリンダ９、及び、バケツト駆動用油
圧シリンダ１１の夫々に対する操作弁V1 〜 4を、
その順で機体外側から横方向に並設し、その並設
方向と同じ向きの中継用回転支軸１８をそれら操
作弁V1 〜 4の前方に設けると共に、バケツト用操
作弁V4に対応位置する第１ベルクランク１９、
ブーム用操作弁V3とアーム用操作弁V2との両方
に対応位置する第２ベルクランク２０、及び、旋
回台用操作弁V1に対応位置する第３ベルクラン
ク２１を、前記支軸１８にその軸芯方向に並べて
夫々所定対応位置で遊嵌支承し、かつ、第２ベル
クランク２０と第１、第３ベルクランク１９，２
１の夫々の間に位置させる状態で支軸１８に一体
回転自在に取付けた第２、第３ベルクランク部材
２２ｂ，２２ｃと、支軸１８の機体内方側端部に
一体回転自在に取付けた第１ベルクランク部材２
２ａとにより支軸１８を回転連動部材に兼用利用
する状態で第４ベルクランク２２を形成してあ
る。 As shown in FIGS. 2 and 3, the driving operation structure of the swivel table 2 and the backhoe device 12 is configured such that the swivel table driving motor 3 and the backhoe device are mounted on a plate-shaped frame 17 below the operation step. Operation valves V 1 to 4 for each of the twelve arm drive hydraulic cylinders 10, boom drive hydraulic cylinders 9, and bucket drive hydraulic cylinders 11,
In that order, they are arranged side by side from the outside of the fuselage in the lateral direction, and a relay rotary shaft 18 in the same direction as the arrangement direction is provided in front of these operation valves V 1 to 4 , and at a position corresponding to bucket operation valve V 4 . The first bell crank 19,
The second bell crank 20 located corresponding to both the boom operation valve V 3 and the arm operation valve V 2 and the third bell crank 21 located corresponding to the swivel base operation valve V 1 are connected to the support shaft 18 . The second bell crank 20 and the first and third bell cranks 19, 2 are arranged in the axial direction and are loosely supported at predetermined corresponding positions, respectively.
The second and third bell crank members 22b and 22c are integrally and rotatably attached to the support shaft 18 while being positioned between the two bell crank members 22b and 22c, and the second and third bell crank members 22c are integrally and rotatably attached to the inner end of the body of the support shaft 18. First bell crank member 2
2a forms a fourth bell crank 22 in which the support shaft 18 is also used as a rotational interlocking member.
そして、運転座席２３前側の両横にステツプか
ら立設した左右一対のスタンド２４に、前後揺動
操作並びに左右揺動操作自在な所謂十字揺動操作
型の第１、第２操作レバー２５，２６を夫々取付
け、機体内方側の第２操作レバー２５の下端に取
付けた揺動ブロツク２５ａの後面及び側面に、第
４ベルクランク２２の第１ベルクランク部材２２
ａ、及び、第１ベルクランク１９のレバー側連結
部１９ａを、かつ、他方の第１操作レバー２６側
の揺動ブロツク２６ａの後面及び側面に、第２、
第３ベルクランク２０，２１のレバー側連結部２
０ａ，２１ａを、夫々自在継手２７を介装したロ
ツド２８により各別に連動連結すると共に、第
１、第３ベルクランク１９，２１の操作弁側連結
部１９ｂ，２１ｂをバケツト及び旋回台用操作弁
V4，V1に押引きロツド２９ａ，２９ｄを介して
各別に連動連結し、かつ、第２、第３ベルクラン
ク部材２２ｂ，２２ｃの夫々の近くに位置させて
それらと同回転位相で第２ベルクランク２０に左
右一対の第１、第２操作弁側連結部２０ｂ，２０
ｃを形成し、ブーム用操作弁V3に連結した押引
きロツド２９ｂを前記第１連結部２０ｂと第２ベ
ルクランク部材２２ｂとに択一的に連結するよう
に、又、アーム用操作弁V2に連結した押引きロ
ツド２９ｃを前記第２連結部２０ｃと第３ベルク
ランク部材２２ｃとに択一連結するように構成し
てある。 On a pair of left and right stands 24 erected from steps on both sides of the front side of the driver's seat 23, there are first and second operating levers 25, 26 of a so-called cross-swing operation type, which are capable of swinging back and forth as well as left and right. The first bell crank member 22 of the fourth bell crank 22 is attached to the rear and side surfaces of the swing block 25a attached to the lower end of the second operating lever 25 on the inside of the machine.
a, and the lever-side connecting portion 19a of the first bell crank 19, and a second,
Lever side connecting portion 2 of third bell cranks 20, 21
0a and 21a are interlocked and connected to each other by rods 28 each having a universal joint 27 interposed therebetween, and the operating valve side connecting portions 19b and 21b of the first and third bell cranks 19 and 21 are connected to the operating valves for the bucket and swivel base.
A second bell crank member is connected to V 4 and V 1 through push/pull rods 29a and 29d, respectively, and is located near the second and third bell crank members 22b and 22c, respectively, and rotates in the same rotational phase as the second and third bell crank members 22b and 22c. A pair of left and right first and second operation valve side connecting portions 20b, 20 are provided on the bell crank 20.
c, and the push/pull rod 29b connected to the boom operating valve V3 is selectively connected to the first connecting portion 20b and the second bell crank member 22b. The push/pull rod 29c connected to the second bell crank member 22c is selectively connected to the second connecting portion 20c and the third bell crank member 22c.
つまり、各レバー２５，２６の左右揺動操作に
よりバケツト８と旋回台２とを夫々操作するよう
に構成すると共に、ブーム用操作弁V3及びアー
ム用操作弁V2の第１、第２連結部２０ｂ，２０
ｃと第２、第３ベルクランク部材２２ｂ，２２ｃ
とに対する前述選択連動切換により、各レバー２
５，２６の前後揺動操作による操作対象をブーム
６あるいはアーム７に相互切換できるように構成
し、ユーザー側からの要望に応じた左右レバー２
５，２６の操作対象パターン変更が簡便な連動操
作構造を、一本の中継支軸１８で構造簡単に、か
つ、コンパクトに構成してある。 In other words, the structure is such that the bucket 8 and the swivel base 2 are respectively operated by the left and right swinging operations of the levers 25 and 26, and the first and second connections of the boom operation valve V 3 and the arm operation valve V 2 are Part 20b, 20
c and the second and third bell crank members 22b and 22c.
By the above-mentioned selection interlocking switching for and, each lever 2
The left and right levers 2 are configured so that the operation target can be switched between the boom 6 and the arm 7 by the forward and backward swinging operations of the levers 5 and 26.
The interlocking operation structure for easily changing the operation target patterns 5 and 26 is constructed with a single relay support shaft 18 in a simple and compact structure.
尚、第４図に示すように、旋回台用操作弁V1
に連動連結する第３ベルクランク２１のレバー側
連結部２１ａを、操作弁側連結部２１ｂに対して
互いに反対方向に90゜づつ位相をズラせた２個の
連結部ａ，ｂで形成し、それら２個の連結部ａ，
ｂに対するレバー側連動用ロツド２８の択一的連
結切換により、第１レバー２６の左右揺動操作向
きに対する旋回台２の旋回向きを適宜変更できる
ように構成しても良い。 In addition, as shown in Fig. 4, the operating valve for the swivel base V 1
The lever side connecting portion 21a of the third bell crank 21 that is interlocked and connected to the operating valve side connecting portion 21b is formed by two connecting portions a and b whose phases are shifted by 90 degrees in opposite directions with respect to the operating valve side connecting portion 21b, Those two connecting parts a,
By selectively switching the connection of the lever-side interlocking rod 28 to b, the pivoting direction of the swivel base 2 relative to the left-right swinging operation direction of the first lever 26 may be changed as appropriate.
又、各レバー２５，２６とそれに対応するベル
クランク１９〜２２との具体的連動構造も種々の
改良が可能である。 Furthermore, various improvements can be made to the specific interlocking structure between the levers 25, 26 and the corresponding bell cranks 19-22.
本考案は、バツクホウ装置やフロントシヨベル
装置等各種型式のシヨベル装置を備えた作業車の
操作装置を対象とするものである。 The present invention is directed to an operating device for a work vehicle equipped with various types of shovel devices such as a backhoe device and a front shovel device.
図面は本考案に係るシヨベル作業車の操作装置
の実施例を示し、第１図は全体側面図、第２図は
作業装置操作構造を示す概略斜視図、第３図は支
軸部分の拡大断面図、第４図は変形例を示す部分
拡大斜視図、第５図は従来構造を示す概略平面図
である。
１８……支軸、１９，２０，２１，２２……ベ
ルクランク、２０ｂ……ブーム用連結部、２０ｃ
……アーム用連結部、２２ａ……第１ベルクラン
ク部材、２２ｂ……第２ベルクランク部材、２２
ｃ……第３ベルクランク部材、２５……第２レバ
ー、２６……第１レバー、２９ｂ，２９ｃ……ロ
ツド。
The drawings show an embodiment of the operating device for a shovel vehicle according to the present invention, with FIG. 1 being an overall side view, FIG. 2 being a schematic perspective view showing the operating device operating structure, and FIG. 3 being an enlarged cross-section of the support shaft portion. FIG. 4 is a partially enlarged perspective view showing a modified example, and FIG. 5 is a schematic plan view showing a conventional structure. 18... Support shaft, 19, 20, 21, 22... Bell crank, 20b... Boom connection part, 20c
...Arm connection part, 22a...First bell crank member, 22b...Second bell crank member, 22
c... Third bell crank member, 25... Second lever, 26... First lever, 29b, 29c... Rod.
Claims (1)
６，２５を、旋回台用操作弁V1、ブーム用操作
弁V3、アーム用操作弁V2、バケツト用操作弁V4
に対して、夫々支軸１８に回転自在に取付けられ
たベルクランク１９，２０，２１，２２を有する
ロツド式連動機構により連動連結したシヨベル作
業車において、一本の前記支軸１８に全ての前記
ベルクランク１９〜２２を取付け、前記旋回台用
操作弁V1とバケツト用操作弁V4の間にブーム用
及びアーム用操作弁V3，V2を並置し、前記ベル
クランク１９〜２２のうち、前記旋回台用操作弁
V1に連動させた前記第１レバー２６に連動する
ブームあるいはアーム用ベルクランク２０、及
び、前記バケツト用操作弁V4に連動させた前記
第２レバー２５に連動するアームあるいはブーム
用ベルクランク２２を形成するに、それら一方
に、前記ブーム用及びアーム用操作弁V3，V2の
並設方向に並べてブーム用連結部２０ｂ及びアー
ム用連結部２０ｃを備えさせ、かつ、他方におい
て、前記レバーの一方に連動して前記支軸１８を
回転させる第１ベルクランク部材２２ａ、前記ブ
ーム用連結部２０ｂの近くで前記支軸１８と一体
回転する第２ベルクランク部材２２ｂ、及び、前
記アーム用連結部２０ｃの近くで前記支軸１８と
一体回転する第３ベルクランク部材２２ｃを備え
させ、前記ブーム用操作弁V3に連結したロツド
２９ｂを前記ブーム用連結部２０ｂ及び第２ベル
クランク部材２２ｂに、かつ、前記アーム用操作
弁V2に連結したロツド２９ｃを前記アーム用連
結部２０ｃ及び第３ベルクランク部材２２ｃに、
夫々択一的に連結自在に形成してあるシヨベル作
業車の操作装置。 First and second levers 2 that can swing freely back and forth and left and right
6 and 25, the operating valve for the swivel base V 1 , the operating valve for the boom V 3 , the operating valve for the arm V 2 , the operating valve for the bucket V 4
On the other hand, in a shovel work vehicle that is interlocked and connected by a rod-type interlocking mechanism having bell cranks 19, 20, 21, and 22 rotatably attached to a support shaft 18, all of the bell cranks are connected to one support shaft 18. The bell cranks 19 to 22 are installed, and the boom and arm operating valves V 3 and V 2 are juxtaposed between the swivel base operating valve V 1 and the bucket operating valve V 4 , and the bell cranks 19 to 22 are , the operating valve for the swivel base
A boom or arm bell crank 20 that is interlocked with the first lever 26 that is interlocked with V 1 , and an arm or boom bell crank 22 that is interlocked with the second lever 25 that is interlocked with the bucket operation valve V 4 . , one of them is provided with a boom connection part 20b and an arm connection part 20c arranged in the direction in which the boom and arm operation valves V 3 and V 2 are arranged in parallel, and the other is provided with a boom connection part 20b and an arm connection part 20c. A first bell crank member 22a that rotates the support shaft 18 in conjunction with one of the boom connection portions 20b, a second bell crank member 22b that rotates integrally with the support shaft 18 near the boom connection portion 20b, and the arm connection. A third bell crank member 22c that rotates integrally with the support shaft 18 is provided near the portion 20c, and a rod 29b connected to the boom operation valve V3 is connected to the boom connecting portion 20b and the second bell crank member 22b. , and the rod 29c connected to the arm operation valve V 2 is connected to the arm connecting portion 20c and the third bell crank member 22c,
An operating device for a shovel work vehicle that can be selectively connected to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4227783U JPS59147765U (en) | 1983-03-23 | 1983-03-23 | Shovel work vehicle operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4227783U JPS59147765U (en) | 1983-03-23 | 1983-03-23 | Shovel work vehicle operating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59147765U JPS59147765U (en) | 1984-10-02 |
| JPH0324682Y2 true JPH0324682Y2 (en) | 1991-05-29 |
Family
ID=30172827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4227783U Granted JPS59147765U (en) | 1983-03-23 | 1983-03-23 | Shovel work vehicle operating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147765U (en) |
-
1983
- 1983-03-23 JP JP4227783U patent/JPS59147765U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59147765U (en) | 1984-10-02 |
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