JPS5569302A - Hydraulic pressure controller for oil pressure tool - Google Patents
Hydraulic pressure controller for oil pressure toolInfo
- Publication number
- JPS5569302A JPS5569302A JP14057578A JP14057578A JPS5569302A JP S5569302 A JPS5569302 A JP S5569302A JP 14057578 A JP14057578 A JP 14057578A JP 14057578 A JP14057578 A JP 14057578A JP S5569302 A JPS5569302 A JP S5569302A
- Authority
- JP
- Japan
- Prior art keywords
- path
- oil
- pressure
- tool
- low pressure
- 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 automatically make the operation of changeover between low pressure fast feed and high pressure slow feed, both by directly linking operational path and high pressure path and linking low pressure path and operational path through a ckeck valve with a relief valve provided in the low pressure path.
CONSTITUTION: An operational path 3 and a high pressure path 5 are directly linked, simultaneously with a relief valve 8 provided in a low pressure path 6, and the low pressure path 6 and the operational path 3 are linked through a check valve 7. When not being applied a load to an oil pressure tool T, pressurized oil from a pump P flows into the operational path 3 from the high pressure path 5 and the low pressure path 6, and operates the oil pressure tool T in low pressure fast feeding. When applied a load to the oil pressure tool T, oil pressure in the operational path 3 goes up to close the check valve, with pressurized oil from the low pressurre path 6 drawn out to the tank from the relief valve 8, and only pressurized oil from the high pressure path 5 flows into the operational path 3 to operate the oil pressure tool T in high pressure slow feeding.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14057578A JPS5569302A (en) | 1978-11-15 | 1978-11-15 | Hydraulic pressure controller for oil pressure tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14057578A JPS5569302A (en) | 1978-11-15 | 1978-11-15 | Hydraulic pressure controller for oil pressure tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5569302A true JPS5569302A (en) | 1980-05-24 |
Family
ID=15271869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14057578A Pending JPS5569302A (en) | 1978-11-15 | 1978-11-15 | Hydraulic pressure controller for oil pressure tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5569302A (en) |
-
1978
- 1978-11-15 JP JP14057578A patent/JPS5569302A/en active Pending
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