JPS60130293U - hydraulic jack - Google Patents
hydraulic jackInfo
- Publication number
- JPS60130293U JPS60130293U JP1503084U JP1503084U JPS60130293U JP S60130293 U JPS60130293 U JP S60130293U JP 1503084 U JP1503084 U JP 1503084U JP 1503084 U JP1503084 U JP 1503084U JP S60130293 U JPS60130293 U JP S60130293U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic jack
- communication passage
- action chamber
- piston
- side hydraulic
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案に係る油圧ジヤツキを示す側断面図、第
２図は第１図の要部拡大図、第３図は本考案に係る油圧
ジヤツキが使用されたシールド掘進機の概略を示す一部
破断側面図である。
図中、１は油圧ジヤツキ、２はシリンダ、３はピストン
、４はピストンヘッド側油圧作用室、５ 、。
はステム側油圧作用室、８は連通路、９は逆止弁である
。Figure 1 is a side sectional view showing the hydraulic jack according to the present invention, Figure 2 is an enlarged view of the main part of Figure 1, and Figure 3 is a schematic diagram of a shield excavator in which the hydraulic jack according to the present invention is used. FIG. 3 is a partially cutaway side view. In the figure, 1 is a hydraulic jack, 2 is a cylinder, 3 is a piston, 4 is a hydraulic chamber on the piston head side, and 5. 8 is a communication passage, and 9 is a check valve.
Claims (1)
作用室とに連通ずる細い連通路を形成し、該連通路にい
ずれか１方向の軸の流れにのみ働く逆止弁機構を設けた
ことを特徴とする油圧ジヤツキ。The piston is characterized by forming a narrow communication passage that communicates with the piston head-side hydraulic action chamber and the stem-side hydraulic action chamber, and providing a check valve mechanism in the communication passage that operates only on axial flow in one direction. Hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1503084U JPS60130293U (en) | 1984-02-07 | 1984-02-07 | hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1503084U JPS60130293U (en) | 1984-02-07 | 1984-02-07 | hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60130293U true JPS60130293U (en) | 1985-08-31 |
Family
ID=30500498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1503084U Pending JPS60130293U (en) | 1984-02-07 | 1984-02-07 | hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60130293U (en) |
-
1984
- 1984-02-07 JP JP1503084U patent/JPS60130293U/en active Pending
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