JPS6231164U - - Google Patents
Info
- Publication number
- JPS6231164U JPS6231164U JP11947285U JP11947285U JPS6231164U JP S6231164 U JPS6231164 U JP S6231164U JP 11947285 U JP11947285 U JP 11947285U JP 11947285 U JP11947285 U JP 11947285U JP S6231164 U JPS6231164 U JP S6231164U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- hydraulic cylinder
- column
- working machine
- detection mechanism
- 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
- 238000001514 detection method Methods 0.000 claims description 3
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図面は本考案の実施例を示しており、第１図は
本考案の要部の断面平面図、第２図は同要部の一
部断面側面図、第３図はコントロールバルブを下
降状態としたときの断面平面図、第４図はブーム
式油圧作業機の全体側面図である。
１…トラクタ、２…油圧作業機、５…支柱、６
…枢軸、７…ブーム、９…油圧シリンダ、１１…
コントロールバルブ、１９…クランクアーム、２
３…カム板、２４…検出機構、２６…スプール、
３２…係止突起、３４…絞り機構、ｌ…距離。
The drawings show an embodiment of the present invention; Fig. 1 is a sectional plan view of the main part of the invention, Fig. 2 is a partially sectional side view of the main part, and Fig. 3 shows the control valve in the lowered state. FIG. 4 is a side view of the entire boom type hydraulic working machine. 1...Tractor, 2...Hydraulic working machine, 5...Strut, 6
...Pivot, 7...Boom, 9...Hydraulic cylinder, 11...
Control valve, 19...Crank arm, 2
3...Cam plate, 24...Detection mechanism, 26...Spool,
32...locking protrusion, 34...diaphragm mechanism, l...distance.
Claims (1)
し、このブーム７と支柱５との間にブーム昇降用
の油圧シリンダ９を設け、この油圧シリンダ９に
コントロールバルブ１１を接続したブーム式油圧
作業機において、前記支柱５とブーム７との間に
はブーム７の昇降限度の少なくとも下降限度の手
前で作動する検出機構２４が設けられ、この検出
機構２４とコントロールバルブ１１との間には検
出機構２４の作動によつて油圧シリンダ９用の油
路を絞る絞り機構３４が設けられていることを特
徴とするブーム式油圧作業機の昇降速度制御装置
。 A boom type in which the base of a boom 7 is pivotally supported on a column 5 fixed to the vehicle 1, a hydraulic cylinder 9 for raising and lowering the boom is provided between the boom 7 and the column 5, and a control valve 11 is connected to the hydraulic cylinder 9. In the hydraulic working machine, a detection mechanism 24 is provided between the support column 5 and the boom 7 and operates at least before the lowering limit of the boom 7. A lifting speed control device for a boom-type hydraulic working machine, characterized in that a throttle mechanism 34 is provided that throttles an oil passage for a hydraulic cylinder 9 by the operation of a detection mechanism 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985119472U JPH0519389Y2 (en) | 1985-08-02 | 1985-08-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985119472U JPH0519389Y2 (en) | 1985-08-02 | 1985-08-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6231164U true JPS6231164U (en) | 1987-02-24 |
| JPH0519389Y2 JPH0519389Y2 (en) | 1993-05-21 |
Family
ID=31006877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985119472U Expired - Lifetime JPH0519389Y2 (en) | 1985-08-02 | 1985-08-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0519389Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976664U (en) * | 1982-11-15 | 1984-05-24 | 株式会社豊田自動織機製作所 | Bucket rotation speed control device for shovel loaders, etc. |
-
1985
- 1985-08-02 JP JP1985119472U patent/JPH0519389Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976664U (en) * | 1982-11-15 | 1984-05-24 | 株式会社豊田自動織機製作所 | Bucket rotation speed control device for shovel loaders, etc. |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519389Y2 (en) | 1993-05-21 |
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