JPS6253299U - - Google Patents
Info
- Publication number
- JPS6253299U JPS6253299U JP14433985U JP14433985U JPS6253299U JP S6253299 U JPS6253299 U JP S6253299U JP 14433985 U JP14433985 U JP 14433985U JP 14433985 U JP14433985 U JP 14433985U JP S6253299 U JPS6253299 U JP S6253299U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- telescoping cylinder
- fluid circuit
- machine frame
- lifting arm
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Shovels (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
図面は本考案の実施例を示し、第１図は要部の
側面図で、作動状態を併せて示しており、第２図
は流体回路の説明図である。
５……機枠、７，１３……横軸、８……ブーム
、９，１７……伸縮形シリンダ、１０……作業部
、１４……持上げアーム、２０……流体回路、２
３……制御弁、２８……制御部。
The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the main parts, also showing the operating state, and FIG. 2 is an explanatory diagram of the fluid circuit. 5...Machine frame, 7, 13...Horizontal axis, 8...Boom, 9, 17...Telescopic cylinder, 10...Working section, 14...Lifting arm, 20...Fluid circuit, 2
3... Control valve, 28... Control section.
Claims (1)
枠５に横軸７を介して昇降自在に取付けられてお
り、ブーム８と機枠５側との間にブーム８を昇降
するための伸縮形シリンダ９が設けられ、該伸縮
形シリンダ９を伸縮する制御弁２３を含む流体回
路２０が備えられたブーム持上げ装置において、 機枠５に横軸１３を介して持上げアーム１４が
枢着され、該持上げアーム１４に前記伸縮形シリ
ンダ９の一端側が取付けられており、持上げアー
ム１４と機枠５との間に別の伸縮形シリンダ１７
が設けられており、前記伸縮形シリンダ９がスト
ロークエンドにされたとき前記別の伸縮形シリン
ダ１７を縮少方向に作動する制御部２８が前記流
体回路２０に設けられていることを特徴とするブ
ーム形作業機のブーム持上げ装置。[Claims for Utility Model Registration] The base end of a boom 8 having a working part 10 at the tip is attached to the machine frame 5 via a horizontal shaft 7 so as to be able to rise and fall freely, and between the boom 8 and the machine frame 5 side. A boom lifting device is provided with a telescoping cylinder 9 for raising and lowering a boom 8, and a fluid circuit 20 including a control valve 23 for telescoping and retracting the telescoping cylinder 9. A lifting arm 14 is pivotally mounted, one end side of the telescoping cylinder 9 is attached to the lifting arm 14, and another telescoping cylinder 17 is installed between the lifting arm 14 and the machine frame 5.
The fluid circuit 20 is characterized in that a control section 28 is provided in the fluid circuit 20 for operating the other telescoping cylinder 17 in the retracting direction when the telescoping cylinder 9 is at the end of its stroke. Boom lifting device for boom type work equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14433985U JPS6253299U (en) | 1985-09-20 | 1985-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14433985U JPS6253299U (en) | 1985-09-20 | 1985-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6253299U true JPS6253299U (en) | 1987-04-02 |
Family
ID=31054843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14433985U Pending JPS6253299U (en) | 1985-09-20 | 1985-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6253299U (en) |
-
1985
- 1985-09-20 JP JP14433985U patent/JPS6253299U/ja active Pending