JPS5788275A - Hydraulic actuator for piston pump - Google Patents
Hydraulic actuator for piston pumpInfo
- Publication number
- JPS5788275A JPS5788275A JP16355080A JP16355080A JPS5788275A JP S5788275 A JPS5788275 A JP S5788275A JP 16355080 A JP16355080 A JP 16355080A JP 16355080 A JP16355080 A JP 16355080A JP S5788275 A JPS5788275 A JP S5788275A
- Authority
- JP
- Japan
- Prior art keywords
- oil passage
- pump
- valve
- piston pump
- hydraulic cylinders
- 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
- Reciprocating Pumps (AREA)
Abstract
PURPOSE: To lower the surge pressure of a concrete pump or the like, by providing an on-off valve in an oil passage which connects other chambers of respective driving hydraulic cylinders to each other so that the cylinders can be locked when the valve is closed, and thereby preventing reverse rotation of the piston pump.
CONSTITUTION: Base chambers a, a' respectively of pump driving hydraulic cylinders 2, 2' are communicated to each other via an oil passage 25, and a pilot operated on-off valve 26 is provided in the oil passage 25. When the necessity of interrupting operation of the piston pump is caused during its operation, operation of a hydraulic pump P is stopped. Thereupon, pressure in a high- pressure oil passage 15 is lowered and that in a pilot oil passage 27 is also lowered. Resultantly, the valve 26 is shifted to the right position by the force of a spring and closes the oil passage 25, so that both of the hydraulic cylinders 2, 2' are locked. This in turn causes locking of pump pistons 3, 3' connected to respective driving pistons 4, 4' in a unitary manner, so that reverse rotation of the piston pump can be prevented positively.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16355080A JPS5788275A (en) | 1980-11-20 | 1980-11-20 | Hydraulic actuator for piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16355080A JPS5788275A (en) | 1980-11-20 | 1980-11-20 | Hydraulic actuator for piston pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5788275A true JPS5788275A (en) | 1982-06-02 |
| JPS6125916B2 JPS6125916B2 (en) | 1986-06-18 |
Family
ID=15776022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16355080A Granted JPS5788275A (en) | 1980-11-20 | 1980-11-20 | Hydraulic actuator for piston pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5788275A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226287A (en) * | 1983-06-06 | 1984-12-19 | Kyokuto Kaihatsu Kogyo Co Ltd | Hydraulic pressure operating device of piston pump for sending fluid body by pressure |
| JPS6263188A (en) * | 1985-09-17 | 1987-03-19 | Mitsubishi Heavy Ind Ltd | Concrete piston reverse motion preventive device of concrete pump |
| KR100803314B1 (en) | 2006-07-20 | 2008-02-14 | 이삼행 | Mortar pump control device |
-
1980
- 1980-11-20 JP JP16355080A patent/JPS5788275A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59226287A (en) * | 1983-06-06 | 1984-12-19 | Kyokuto Kaihatsu Kogyo Co Ltd | Hydraulic pressure operating device of piston pump for sending fluid body by pressure |
| JPS6263188A (en) * | 1985-09-17 | 1987-03-19 | Mitsubishi Heavy Ind Ltd | Concrete piston reverse motion preventive device of concrete pump |
| KR100803314B1 (en) | 2006-07-20 | 2008-02-14 | 이삼행 | Mortar pump control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6125916B2 (en) | 1986-06-18 |
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