JPS5754626A - Hydraulic control circuit for pile-driving hammer - Google Patents
Hydraulic control circuit for pile-driving hammerInfo
- Publication number
- JPS5754626A JPS5754626A JP12863880A JP12863880A JPS5754626A JP S5754626 A JPS5754626 A JP S5754626A JP 12863880 A JP12863880 A JP 12863880A JP 12863880 A JP12863880 A JP 12863880A JP S5754626 A JPS5754626 A JP S5754626A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic cylinder
- valve
- direction switch
- hammer
- pile
- 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
Abstract
PURPOSE: To prevent rising of oil temperature and to absorb a surge pressure at a free falling time of a hammer, by a method wherein pipe lines, located between a direction switch valve and a hydraulic cylinder, are connected together by means of a relief valve, and an accumulator is situated at a return pipe line.
CONSTITUTION: In a circuit, in which a hydraulic cylinder 10 is controlled by means of a fixed capacity pump 2, a control valve 4, variable capacity pumps 3, 3', control valves 4A, 4B, switch valves 8, 8' and a direction switch valve 9, a connection line with a relief valve 15 is located between drive lines positioned between the direction switch valve 9 and the hydraulic cylinder 10, and an accumulator 13 is situated at a return line 11. This permits the prevention of the rise in oil temperature at the contracting time of the rod of the hydraulic cylinder 10 and absorbs even a surge pressure at the free falling time of a hammer.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12863880A JPS5754626A (en) | 1980-09-18 | 1980-09-18 | Hydraulic control circuit for pile-driving hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12863880A JPS5754626A (en) | 1980-09-18 | 1980-09-18 | Hydraulic control circuit for pile-driving hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5754626A true JPS5754626A (en) | 1982-04-01 |
| JPH0144851B2 JPH0144851B2 (en) | 1989-09-29 |
Family
ID=14989759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12863880A Granted JPS5754626A (en) | 1980-09-18 | 1980-09-18 | Hydraulic control circuit for pile-driving hammer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5754626A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200559A (en) * | 2005-01-18 | 2006-08-03 | Shin Caterpillar Mitsubishi Ltd | Accumulator installation structure for working device hydraulic piping in working vehicle |
| WO2019188129A1 (en) * | 2018-03-27 | 2019-10-03 | Smc株式会社 | Air cylinder |
| WO2019188127A1 (en) * | 2018-03-27 | 2019-10-03 | Smc株式会社 | Fluid circuit for air cylinder |
-
1980
- 1980-09-18 JP JP12863880A patent/JPS5754626A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006200559A (en) * | 2005-01-18 | 2006-08-03 | Shin Caterpillar Mitsubishi Ltd | Accumulator installation structure for working device hydraulic piping in working vehicle |
| WO2019188129A1 (en) * | 2018-03-27 | 2019-10-03 | Smc株式会社 | Air cylinder |
| WO2019188127A1 (en) * | 2018-03-27 | 2019-10-03 | Smc株式会社 | Fluid circuit for air cylinder |
| TWI699488B (en) * | 2018-03-27 | 2020-07-21 | 日商Ｓｍｃ股份有限公司 | Fluid circuit of air cylinder |
| TWI701390B (en) * | 2018-03-27 | 2020-08-11 | 日商Ｓｍｃ股份有限公司 | Air cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0144851B2 (en) | 1989-09-29 |
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