JPS5614602A - Hydraulic pressure unit - Google Patents
Hydraulic pressure unitInfo
- Publication number
- JPS5614602A JPS5614602A JP9085279A JP9085279A JPS5614602A JP S5614602 A JPS5614602 A JP S5614602A JP 9085279 A JP9085279 A JP 9085279A JP 9085279 A JP9085279 A JP 9085279A JP S5614602 A JPS5614602 A JP S5614602A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- pressure unit
- hydraulic pressure
- check valve
- 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.)
- Pending
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
PURPOSE: To form an unloading circuit through a minimum modification of a hydraulic pressure unit equipped with a hydraulic pump, change-over valve and check valve, by providing a communication passage which is communicated at one end thereof to a point between the hydraulic pump and check valve and at the other end to the exterior.
CONSTITUTION: In a hydraulic pressure unit equipped with a hydraulic pump 9, change-over valve 10 and check valve 11 as a unit, a communication passage 32 is provided in such a manner that it is communicated at one end thereof to a point between the hydraulic pump 9 and check valve 11 and at the other end to the exterior. For extending a hydraulic cylinder 2, the change-over valve 10 is switched into a lifting position 24 to supply the working oil to the cylinder 2 from an oil tank 5. As soon as the cylinder 2 assumes its full stroke position, an unload valve 33 is switched to a communication position 35 to unload the pressur oil from the hydraulic pump 9 to the tank 5. By using such an arrangement, it is possible to construct easily an unloading circuit with a minimum modification to a conventional hydraulic pressure unit but without need for any extra space for the unloading circuit.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9085279A JPS5614602A (en) | 1979-07-16 | 1979-07-16 | Hydraulic pressure unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9085279A JPS5614602A (en) | 1979-07-16 | 1979-07-16 | Hydraulic pressure unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5614602A true JPS5614602A (en) | 1981-02-12 |
Family
ID=14010100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9085279A Pending JPS5614602A (en) | 1979-07-16 | 1979-07-16 | Hydraulic pressure unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5614602A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58222987A (en) * | 1982-06-22 | 1983-12-24 | Toyota Motor Corp | Two-way revolution combined type hydraulic pressure package |
AT342U1 (en) * | 1993-09-30 | 1995-08-25 | Fluidtech Gmbh | STARTING CIRCUIT |
-
1979
- 1979-07-16 JP JP9085279A patent/JPS5614602A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58222987A (en) * | 1982-06-22 | 1983-12-24 | Toyota Motor Corp | Two-way revolution combined type hydraulic pressure package |
JPH0241647B2 (en) * | 1982-06-22 | 1990-09-18 | ||
AT342U1 (en) * | 1993-09-30 | 1995-08-25 | Fluidtech Gmbh | STARTING CIRCUIT |
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