JPS5576729A - Hydraulic jack control means in apparatus for stably supporting vehicle - Google Patents
Hydraulic jack control means in apparatus for stably supporting vehicleInfo
- Publication number
- JPS5576729A JPS5576729A JP14948878A JP14948878A JPS5576729A JP S5576729 A JPS5576729 A JP S5576729A JP 14948878 A JP14948878 A JP 14948878A JP 14948878 A JP14948878 A JP 14948878A JP S5576729 A JPS5576729 A JP S5576729A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic jack
- oil
- hydraulic
- vehicle
- 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.)
- Granted
Links
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Actuator (AREA)
Abstract
PURPOSE: To constantly stably support a vehicle in a desired posture by forcibly locking by a mechanical means from the outside a hydraulic jack and a pilot check valve provided in a hydraulic circuit whereby a hydraulic pump and an oil reservoir are communicated with each other.
CONSTITUTION: When a handle 23 is turned in a tightening direction as a hydraulic jack J is kept in an extended state, a push rod 22 is slidingly moved to left so that an end portion of the push rod 22 collides with a spherical valve 19, which is thus brought into close contact with a surface 21 of a valve seat 13. As a result, a pilot check valve Vp is held in a locked state. At this time, the flow of an operation oil in an oil passage on the extension side is interrupted so that the hydraulic jack J is also hydraulically locked. Therefore, even when a change-over valve Vs is then shifted to right by mistake, and even when an oil leak or damage or breakage occurs in an operation oil supply system, the hydraulic jack J is never contracted. This allows a vehicle to be supported securely in a desired posture.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14948878A JPS5576729A (en) | 1978-12-01 | 1978-12-01 | Hydraulic jack control means in apparatus for stably supporting vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14948878A JPS5576729A (en) | 1978-12-01 | 1978-12-01 | Hydraulic jack control means in apparatus for stably supporting vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5576729A true JPS5576729A (en) | 1980-06-10 |
JPS6116844B2 JPS6116844B2 (en) | 1986-05-02 |
Family
ID=15476241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14948878A Granted JPS5576729A (en) | 1978-12-01 | 1978-12-01 | Hydraulic jack control means in apparatus for stably supporting vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576729A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6086604U (en) * | 1983-11-22 | 1985-06-14 | 株式会社小金井製作所 | cylinder device |
CN105060158A (en) * | 2015-08-19 | 2015-11-18 | 张宏生 | Double-acting hydraulic jack |
US10736455B2 (en) | 2016-07-11 | 2020-08-11 | Espressions B.V. | Pressing body and apparatus for obtaining fruit juice and/or fruit pulp from citrus fruit |
-
1978
- 1978-12-01 JP JP14948878A patent/JPS5576729A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6086604U (en) * | 1983-11-22 | 1985-06-14 | 株式会社小金井製作所 | cylinder device |
JPH0439444Y2 (en) * | 1983-11-22 | 1992-09-16 | ||
CN105060158A (en) * | 2015-08-19 | 2015-11-18 | 张宏生 | Double-acting hydraulic jack |
US10736455B2 (en) | 2016-07-11 | 2020-08-11 | Espressions B.V. | Pressing body and apparatus for obtaining fruit juice and/or fruit pulp from citrus fruit |
Also Published As
Publication number | Publication date |
---|---|
JPS6116844B2 (en) | 1986-05-02 |
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