JPS6123101Y2 - - Google Patents
Info
- Publication number
- JPS6123101Y2 JPS6123101Y2 JP1695982U JP1695982U JPS6123101Y2 JP S6123101 Y2 JPS6123101 Y2 JP S6123101Y2 JP 1695982 U JP1695982 U JP 1695982U JP 1695982 U JP1695982 U JP 1695982U JP S6123101 Y2 JPS6123101 Y2 JP S6123101Y2
- Authority
- JP
- Japan
- Prior art keywords
- arm portion
- outer arm
- attached
- reinforcing member
- sliding plate
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 238000009412 basement excavation Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
【考案の詳細な説明】
本考案は、角筒状の外側アーム部分に、内側ア
ーム部分を摺動自在に内嵌させるとともに、前記
内側アーム部分に連設のシリンダ連結用ブラケツ
トを挿通させるための切欠きを、前記外側アーム
部分の上部壁にその先端部において開口させる状
態で形成し、前記外側アーム部分における切欠き
の両側部分同志を接続する逆Ｕ字状の補強部材
を、前記外側アーム部分の先端部にそれの上部壁
及び両横側部壁を覆う状態で取けたシヨベル作業
用アームに関する。[Detailed Description of the Invention] The present invention has a structure in which an inner arm portion is slidably fitted into a rectangular cylindrical outer arm portion, and a continuous cylinder connecting bracket is inserted through the inner arm portion. A notch is formed in the upper wall of the outer arm portion so as to be open at its tip, and an inverted U-shaped reinforcing member connecting both sides of the notch in the outer arm portion is formed in the upper wall of the outer arm portion. This invention relates to a shovel working arm that can be attached to the tip of the shovel so as to cover its upper wall and both side walls.
上記アームは、バケツトの作動軌跡変更等のた
めに伸縮できるようにし、しかも補強部材によつ
て、外側アーム部分の先端部が掘削反力のために
押開される等変形するのを極力抑制できるように
したものであるが、従来では、補強部材を、単
に、その全体に亘つて同肉厚となるように形成す
るとともに、補強部材の内面を、単に、外側アー
ム部分の上部壁及び両横側部壁に接触させるよう
にしていたため、軽量化を図るべく、補強部材及
び外側アーム部分の肉厚を小にすると、掘削反力
のために、補強部材や外側アーム部分が早期に変
形損傷してしまう虞れがあり、特に、外側アーム
部分の切欠き両側部に位置する上部壁が上方へ伸
展されるよう屈曲される等に起因して、外側アー
ム部分の両横側部壁が内方がわへ凹入屈曲するよ
うに変形すると、早期にアームを適正通り伸縮さ
せることができなくなる不都合を招くこともあつ
た。 The above-mentioned arm is made to be able to expand and contract to change the operating trajectory of the bucket, and the reinforcing member minimizes deformation of the tip of the outer arm portion such as being pushed open due to excavation reaction force. However, conventionally, the reinforcing member is simply formed to have the same thickness throughout, and the inner surface of the reinforcing member is simply formed between the upper wall of the outer arm portion and both sides. Since the reinforcing member and the outer arm were made to contact the side wall, if the thickness of the reinforcing member and the outer arm were made smaller in order to reduce weight, the reinforcing member and the outer arm would be deformed and damaged early due to the excavation reaction force. In particular, there is a risk that the upper walls on both sides of the notch in the outer arm portion may be bent to extend upward, causing both lateral side walls of the outer arm portion to bend inward. If the arm is deformed so as to be bent in a concave manner, it may become inconvenient that the arm cannot be extended or contracted properly at an early stage.
本考案の目的は、全体の軽量化を図りながら
も、補強部材及び外側アーム部分先端部の変形損
傷を抑制する点にある。 An object of the present invention is to suppress deformation damage to the reinforcing member and the tip of the outer arm portion while reducing the overall weight.
本考案の特徴構成は、外側アーム部分の上方が
わ両角部に接触する当て金を、前記外側アーム部
分の先端部に取付ける逆Ｕ字状補強部材に取付け
るとともに、前記両当て金の下端がわ縁部に接当
するストツパーを、外側アーム部分の両横側部壁
に取付けてある。 The characteristic configuration of the present invention is that the pads that contact both upper corners of the outer arm portion are attached to an inverted U-shaped reinforcing member attached to the tip of the outer arm portion, and the lower ends of both pads are attached to the top end of the outer arm portion. Stops abutting the edges are mounted on both lateral walls of the outer arm section.
次に、本案特徴構成による作用効果を述べる。 Next, the effects of the feature configuration of the present invention will be described.
すなわち、外側アーム部分の上方がわ両角部に
接触する当て金を、補強部材に取付けることによ
つて、補強部材の保形強度を、その肉厚を小にし
ながらも増大させることができるようにしてある
から、補強部材の変形損傷を抑制できるととも
に、それに伴い、外側アーム部分が押開かれるこ
とや、外側アーム部分の切欠き両側部に位置する
上部壁が上方へ伸展されるよう屈曲されること
を、たとえ外側アーム部分を肉厚小に形成して
も、効果的に抑制できるのである。しかも、両当
て金の下端がわ縁部に接当するストツパーを、外
側アーム部分の両横側部壁に取付けることによつ
て、外側アーム部分の両側部壁に、それを内方が
わへ凹入屈曲させようとする外力が作用しても、
当て金とストツパーとの接当により、例えば上記
外力を外側アーム部分の上下方向に向う分力に分
散させるようにする等により、上記外力のために
両横側部壁が内方がわへ凹入屈曲されることを極
力抑制できるのである。 That is, by attaching the pads that contact both upper corners of the outer arm portion to the reinforcing member, the shape-retaining strength of the reinforcing member can be increased while reducing its wall thickness. As a result, deformation damage to the reinforcing member can be suppressed, and accordingly, the outer arm portion is pushed open, and the upper wall located on both sides of the notch in the outer arm portion is bent so as to be extended upward. This can be effectively suppressed even if the outer arm portion is formed to have a small wall thickness. Moreover, by attaching the stoppers that contact the lower edges of both pads to both side walls of the outer arm part, the stoppers can be attached to both side walls of the outer arm part to the inner side. Even if an external force is applied to cause it to bend,
By making contact between the stopper and the stopper, for example, by dispersing the external force into components of force directed in the vertical direction of the outer arm portion, both side walls are concave inwardly due to the external force. This makes it possible to suppress bending as much as possible.
もつて、全体として軽量化を図りながら、補強
部材及び外側アーム部分先端部が掘削反力のため
に変形損傷されることを抑制できるのであり、実
用上の利点大である。 As a result, while reducing the overall weight, it is possible to suppress deformation and damage to the reinforcing member and the tip of the outer arm portion due to the excavation reaction force, which is a great practical advantage.
次に、本考案の実施例を図面に基づいて説明す
る。 Next, embodiments of the present invention will be described based on the drawings.
第１図に示すように、クローラ走行装置１を備
えた走行機台に、排土板２の支持アーム２ａを油
圧シリンダ３によつて昇降操作可能に取付けると
ともに旋回台４を油圧モータ（図示せず）によつ
て縦軸心X1周りに回転操作可能に取付け、旋回
台４に、第１アーム支持用ブラケツト５を、油圧
シリンダ６によつて縦軸心X2周りに回転操作可
能に取付け、ブラケツト５に、第１アーム７を油
圧シリンダ８によつて昇降揺動操作可能に取付
け、第１アーム７に、第２アーム９を油圧シリン
ダ１０によつて揺動操作可能に取付け、第２アー
ム９に、バケツト１１を油圧シリンダ１２によつ
て揺動操作可能に取付け、もつて、排土作業と対
地掘削作業とを行なうことが可能なドーザ兼用バ
ツクホウ作業車を構成してある。 As shown in FIG. 1, the supporting arm 2a of the earth removal plate 2 is attached to a traveling machine base equipped with a crawler traveling device 1 so that it can be raised and lowered by a hydraulic cylinder 3, and the swivel base 4 is connected to a hydraulic motor (not shown). The first arm support bracket 5 is mounted on the swivel base 4 so as to be rotatable around the vertical axis X 2 by means of a hydraulic cylinder 6. , a first arm 7 is attached to the bracket 5 so that it can be moved up and down by a hydraulic cylinder 8, a second arm 9 is attached to the first arm 7 so that it can be moved up and down by a hydraulic cylinder 10; A bucket cart 11 is attached to the arm 9 so as to be swingable by a hydraulic cylinder 12, thereby forming a dozer/backhoe work vehicle capable of carrying out earth removal work and ground excavation work.
第１図乃至第４図に示すように、前記第２アー
ム９を構成するに、先端にバケツト１１を取付け
た角筒状の内側アーム部分９ａを、第１アーム７
に基端部が枢支された角筒状の外側アーム部分９
ｂに対して、摺動可能に内嵌させ、内側アーム部
分９ａの基端部４側面夫々に、外側アーム部分９
ｂの内面に接触作用する合成樹脂製の第１滑り板
１３……を取付け、外側アーム部分９ｂの先端部
４側面夫々に、内側アーム部分９ａの外側面夫々
に接触作用する合成樹脂製の第２滑り板１４……
を取付け、更に、内側アーム部分９ａを出退駆動
するための油圧シリンダ１５を、両アーム部分９
ａ，９ｂ間に架設し、もつて第２アーム９を伸縮
させることにより、深さが異なる溝の底を掘削す
る等のたゆにバケツト１１の作動軌跡を変更でき
るように構成し、又、第１、第２滑り板１３，１
４によつて、第２アーム９をスライド抵抗及びガ
タ少なく伸縮させることができるように構成して
ある。 As shown in FIGS. 1 to 4, the second arm 9 is constructed by connecting a rectangular cylindrical inner arm portion 9a with a bucket 11 attached to the tip to the first arm 7.
A rectangular cylindrical outer arm portion 9 whose base end is pivoted to
The outer arm portion 9 is slidably fitted into the inner arm portion 9b, and the outer arm portion 9
A first sliding plate 13 made of synthetic resin that comes into contact with the inner surface of the outer arm portion 9b is attached, and a first sliding plate 13 made of synthetic resin that comes into contact with the outer surface of the inner arm portion 9a is attached to each of the four sides of the tip end of the outer arm portion 9b. 2 sliding plate 14...
Furthermore, a hydraulic cylinder 15 for moving the inner arm portion 9a in and out is attached to both arm portions 9.
It is constructed so that the operating locus of the bucket 11 can be easily changed, such as when excavating the bottom of a trench with different depths, by extending and contracting the second arm 9 by constructing it between a and 9b, and First and second sliding plates 13,1
4, the second arm 9 is configured to be able to extend and contract with little sliding resistance and play.
又、前記内側アーム部分９ａの上部壁に、バケ
ツト操作用油圧シリンダ１２の連結用ブラケツト
１６を上方へ突設し、外側アーム部分９ｂの上部
壁に、前記ブラケツト挿通用切欠き１７を外側ア
ーム部分９ｂの先端部において開口する状態で形
成し、もつて、内側アーム部分９ａを、外側アー
ム部分９ｂに対して、その先端部より後方へ移動
させながら挿入させて組付けることができるよう
に構成してある。 Further, a bracket 16 for connecting the bucket operating hydraulic cylinder 12 is provided on the upper wall of the inner arm portion 9a to project upward, and a notch 17 for inserting the bracket is provided on the upper wall of the outer arm portion 9b. The inner arm portion 9b is formed to be open at the distal end thereof, and the inner arm portion 9a can be inserted and assembled into the outer arm portion 9b while moving backward from the distal end thereof. There is.
前記外側アーム部分９ｂにおける切欠き１７の
両側部分同志を接続する逆Ｕ字状の補強部材１８
を、外側アーム部分９ｂの先端部に、それの上部
壁及び両横側部壁を覆う状態で、且つ、外側アー
ム部分９ｂの両横側部壁にボルト連結する状態で
取付けてある。そして、前記外側アーム部分９ｂ
の上方がわ両角部に接触する当て金１９，１９
を、補強部材１８に溶接によつて取付けるととも
に、前記両当て金１９，１９の下端がわ縁部に接
当する第１ストツパー２０，２０を、外側アーム
部分９ｂの両横側部壁に溶接によつて取付け、更
に、前記両当て金１９，１９の上端がわ縁部に接
当する第２ストツパー２１，２１を、外側アーム
部分９ｂの上部壁に溶接によつて取付け、もつ
て、当て金１９，１９を補強部材１８に取付ける
ことによつて、補強部材１８の保形強度を上昇さ
せるとともに、それに伴つて外側アーム部分９ｂ
の先端部の変形損傷を抑制させるように構成し、
しかも、当て金１９，１９の下端がわ縁部に接当
する第１ストツパー２０，２０を設けることによ
つて、外側アーム部分９ｂの両横側壁部が内方が
わに凹入屈曲することを抑制するように構成し、
さらに、当て金１９，１９の上端がわ縁部に接当
する第２ストツパー２１，２１を設けることによ
つて、外側アーム部分９ｂが押開かれることを確
実に抑制できるようにしてある。 An inverted U-shaped reinforcing member 18 that connects both sides of the notch 17 in the outer arm portion 9b.
is attached to the distal end of the outer arm portion 9b so as to cover its upper wall and both side walls, and to be bolted to both side walls of the outer arm portion 9b. And the outer arm portion 9b
Buttons 19, 19 that contact both upper corners of the
are attached to the reinforcing member 18 by welding, and first stoppers 20, 20, which contact the lower end edges of the two pads 19, 19, are welded to both lateral side walls of the outer arm portion 9b. Furthermore, the second stoppers 21, 21 which are in contact with the upper end edges of the two pads 19, 19 are attached to the upper wall of the outer arm portion 9b by welding, By attaching the metals 19, 19 to the reinforcing member 18, the shape-retaining strength of the reinforcing member 18 is increased, and the outer arm portion 9b is accordingly increased.
It is configured to suppress deformation damage to the tip of the
Moreover, by providing the first stoppers 20, 20 that abut the lower edges of the pads 19, 19, both lateral side walls of the outer arm portion 9b are bent inwardly. configured to suppress
Further, by providing second stoppers 21, 21 which abut the upper end edges of the pads 19, 19, it is possible to reliably prevent the outer arm portion 9b from being pushed open.
前記第１滑り板１３……を内側アーム部分９ａ
に取付けるには、内側アーム部分９ａに、各滑り
板１３……夫々をそれの面方向に移動下能に且つ
それの面方向と直交する方向に離脱可能に係止支
持する筒状係止具２２……を設け、内側アーム部
分９ａの上部壁及び左側部壁に、各滑り板１３…
…のうちの上方のもの及び左方のものを外側アー
ム部分９ｂがわへ押圧するボルト２３及び２３を
取付け、上方及び左方の滑り板１３とボルト２
３，２３との間に、滑り板押圧用金属製板状体２
４，２４を介在し、更に、各滑り板１３……のう
ちの上方を除いたもの夫々における後端部を、ア
ーム伸縮方向に互いに位置が相違する状態で配置
し、もつて、各第１滑り板１３……の夫々を係止
具２２……に係止支持させる安価、簡単な構造で
取付けることができるように構成し、又、各第１
滑り板１３……のうちの上方のもの及び左方のも
のをボルト２３，２３により外側アーム部分９ｂ
がわへ押圧させることにより、使用に伴う摩耗に
拘らず第２アーム９をガタのない状態で良好に伸
縮させることができるように構成し、又、内側ア
ーム部分９ａを、外側アーム部分９ｂに対して、
その先端部より後方へ移動させながら挿入させる
に際して、各滑り板１３……のうちのその後端部
が後方に位置するものほど先に係止具２２に組付
けるようにしながら順次的に組付けることによ
り、両アーム部分９ａ，９ｂの組付けを容易に行
なえるように構成し、又、板状体２４，２４を設
けることによつて、滑り板１３がボルト２３，２
３にて局部的に押圧されることに起因して変形損
傷したり、滑り板１３のボルト２３，２３による
被接当部が回動するボルト２３との接触のために
局部的に大きく摩耗して損傷する等の不都合を回
避できるように構成してある。 The first sliding plate 13... is connected to the inner arm portion 9a.
In order to attach it to the inner arm portion 9a, a cylindrical locking tool is attached to the inner arm portion 9a to lock and support each sliding plate 13 so that it can be moved in the direction of its surface and detachable in a direction perpendicular to its surface. 22... are provided, and each sliding plate 13... is provided on the upper wall and left side wall of the inner arm portion 9a.
Attach the bolts 23 and 23 that press the upper and left ones of ... towards the outer arm portion 9b, and attach the upper and left sliding plates 13 and bolts 2.
3 and 23, there is a metal plate-shaped body 2 for pressing the sliding plate.
4 and 24, and the rear ends of each sliding plate 13 excluding the upper part are arranged at different positions in the direction of extension and contraction of the arm. Each of the sliding plates 13... is configured to be able to be mounted with an inexpensive and simple structure in which each of the first sliding plates 13... is locked and supported by the locking tool 22...
The upper and left side of the sliding plates 13 are attached to the outer arm portion 9b by bolts 23, 23.
By pressing the second arm 9 against the side, the second arm 9 is configured to be able to expand and contract well without play regardless of wear caused by use. for,
When inserting the sliding plate 13 by moving it backward from its tip, the sliding plate 13 is assembled in sequence, with the rear end of the slide plate 13 being positioned at the rear, the more the sliding plate 13 is assembled to the locking tool 22 first. Therefore, by providing the plate-shaped bodies 24, 24, the sliding plate 13 can be easily assembled with the bolts 23, 2.
3 may be deformed and damaged due to being locally pressed, or the parts of the sliding plate 13 contacted by the bolts 23, 23 may be locally greatly worn due to contact with the rotating bolt 23. The structure is designed to avoid inconveniences such as damage caused by
前記第２滑り板１４……を外側アーム部分９ｂ
に取付けるに、外側アーム部分９ｂにおける左右
側部壁に、各滑り板１４……のうちの左方のもの
及び右方のものをそれの面方向に移動不能に且つ
それの面方向と直交する方向に離脱可能に係止支
持する筒状係止具２５，２５を設け、外側アーム
部分９ｂにおける下部壁、及び、補強部材１８
に、各滑り板１４……のうちの下方のもの及び上
方のものをそれの面方向に移動不能に且つそれの
面方向と直交する方向に離脱可能に係止支持する
筒状枠体２９及びボルト２６を取付け、外側アー
ム部分９ｂの下部壁及び右側部壁に、各滑り板１
４……のうちの下方のもの及び右方のものを内側
アーム部分９ａがわへ押圧するボルト２７，２７
を取付け、更に、下方及び右方の滑り板１４，１
４とそれを押圧するボルト２７及び２７との間
に、滑り板押圧用金属性板状体２８，２８を介在
し、もつて、前記第１滑り板１３……の取付構造
で述べた如く、第２滑り板１４……を安価、簡単
な構造で取付けることができるように構成し、
又、使用に伴う摩耗に拘らず第２アーム９をガタ
のない状態で伸縮させることができるように構成
し、更に、滑り板１４，１４がボルト２７，２７
により押圧されることに起因する損傷を回避でき
るように構成してある。 The second sliding plate 14... is connected to the outer arm portion 9b.
In order to attach it to the left and right side walls of the outer arm portion 9b, the left and right slide plates 14 are immovably moved in the plane direction of the sliding plate 14 and perpendicular to the plane direction thereof. The lower wall of the outer arm portion 9b and the reinforcing member 18 are provided with cylindrical locking tools 25, 25 that are removably locked and supported in the direction.
and a cylindrical frame 29 that locks and supports the lower and upper slide plates 14 so that they cannot move in the direction of the surface thereof and can be removed in a direction perpendicular to the direction of the surface thereof. Attach the bolts 26 and attach each sliding plate 1 to the lower wall and right side wall of the outer arm portion 9b.
4. Bolts 27, 27 that press the lower one and the right one towards the inner arm portion 9a.
Attach the lower and right sliding plates 14, 1.
4 and the bolts 27 and 27 that press it, metallic plate-like bodies 28 and 28 for pressing the sliding plates are interposed, and as described in the mounting structure of the first sliding plate 13... The second sliding plate 14 is constructed so that it can be installed at low cost and with a simple structure,
In addition, the second arm 9 is configured to be able to expand and contract without play regardless of wear caused by use, and furthermore, the sliding plates 14, 14 are connected to the bolts 27, 27.
The structure is designed to avoid damage caused by being pressed by.
本考案を実施するに、第２ストツパー２１を設
けないで実施してもよい。 The present invention may be implemented without providing the second stopper 21.
又、本考案は、滑り板１３，１４を設けてない
で実施してもよい。 Further, the present invention may be implemented without providing the sliding plates 13 and 14.
又、本考案は、実施例を述べた第１アーム７
や、フエイスシヨベル作業車におけるアームに適
用する等、各種シヨベル作業用アームに適用でき
る。 Further, the present invention has the first arm 7 described in the embodiment.
It can be applied to various types of shovel work arms, such as the arms of face shovel work vehicles.
第１図はバツクホウ作業車の側面図、第２図は
第２アームの一部省略切欠き側面図、第３図は第
２図における−線断面図、第４図は第２図に
おける−線断面図である。
９ａ……内側アーム部分、９ｂ……外側アーム
部分、１６……シリンダ連結用ブラケツト、１７
……切欠き、１８……補強部材、１９……当て
金、２０……ストツパー。
Figure 1 is a side view of the backhoe work vehicle, Figure 2 is a partially omitted cutaway side view of the second arm, Figure 3 is a sectional view taken along the - line in Figure 2, and Figure 4 is the - line in Figure 2. FIG. 9a...Inner arm part, 9b...Outer arm part, 16...Bracket for cylinder connection, 17
... Notch, 18 ... Reinforcement member, 19 ... Pad, 20 ... Stopper.
Claims (1)
分９ａを摺動自在に内嵌させるとともに、前記内
側アーム部分９ａに連設のシリンダ連結用ブラケ
ツト１６を挿通させるための切欠き１７を、前記
外側アーム部分９ｂの上部壁にその先端部におい
て開口させる状態で形成し、前記外側アーム部分
９ｂにおける切欠き１７の両側部分同志を接続す
る逆Ｕ字状の補強部材１８を、前記外側アーム部
分９ｂ先端部にそれの上部壁及び両横側部壁を覆
う状態で取付けたシヨベル作業用アームであつ
て、前記外側アーム部分９ｂの上方がわ両角部に
接触する当て金１９，１９を前記補強部材１８に
取付けるとともに、前記両当て金１９，１９の下
端がわ縁部に接当するストツパー２０，２０を、
前記外側アーム部分９ｂの両横側部壁に取付けけ
てあることを特徴とするシヨベル作業用アーム。 The inner arm portion 9a is slidably fitted into the square tubular outer arm portion 9b, and a notch 17 is provided in the outer side for inserting the cylinder connecting bracket 16 connected to the inner arm portion 9a. An inverted U-shaped reinforcing member 18 is formed in the upper wall of the arm portion 9b with an opening at its tip, and connects both sides of the notch 17 in the outer arm portion 9b. The shovel working arm is attached to the outer arm portion 9b so as to cover its upper wall and both side walls, and the reinforcing member 18 At the same time, stoppers 20, 20 are attached to the lower edges of the two pads 19, 19,
A shovel working arm, characterized in that it is attached to both lateral side walls of the outer arm portion 9b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1695982U JPS58120250U (en) | 1982-02-08 | 1982-02-08 | Shovel work arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1695982U JPS58120250U (en) | 1982-02-08 | 1982-02-08 | Shovel work arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58120250U JPS58120250U (en) | 1983-08-16 |
| JPS6123101Y2 true JPS6123101Y2 (en) | 1986-07-10 |
Family
ID=30029302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1695982U Granted JPS58120250U (en) | 1982-02-08 | 1982-02-08 | Shovel work arm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58120250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007284194A (en) * | 2006-04-17 | 2007-11-01 | Tadano Ltd | Outer side boom distal end part structure for expansion/contraction boom |
-
1982
- 1982-02-08 JP JP1695982U patent/JPS58120250U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007284194A (en) * | 2006-04-17 | 2007-11-01 | Tadano Ltd | Outer side boom distal end part structure for expansion/contraction boom |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58120250U (en) | 1983-08-16 |
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