JPS56131803A - Equipment with oil hydraulic cylinder of high speed and high pressure - Google Patents
Equipment with oil hydraulic cylinder of high speed and high pressureInfo
- Publication number
- JPS56131803A JPS56131803A JP3390280A JP3390280A JPS56131803A JP S56131803 A JPS56131803 A JP S56131803A JP 3390280 A JP3390280 A JP 3390280A JP 3390280 A JP3390280 A JP 3390280A JP S56131803 A JPS56131803 A JP S56131803A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- oil hydraulic
- high speed
- oil
- sent
- 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 obtain high speed, high output in spite of use of an oil hydraulic pump of low pressure, low discharge by a method wherein a combination cylinder is made up by providing a boosting cavity between a high output generating piston and a high speed moving piston.
CONSTITUTION: In an oil hydraulic valve V1 is shifted to a position V1a, pressure oil sent under pressure from an oil hydraulic pump is sent to oil hydraulic valves V2, V3 through a line 9. If the V2 is at a position V2a and the V3 is at a position V3a, the pressure oil is sent to the boosting cacity 6 of a cylinder 1 and the high speed moving piston 3 falls at a high speed. When the point of the piston 3 runs into a load 8, the pressure in a cavity 6 rises, a pressure control valve V4 opens and as a result the oil hydraulic valve V3 is shifted to a position V3b. Accordingly, the pressure oil is sent to a cavity 4, a high pressure generating piston 2 is dropped to give a large pressure to the load 8.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3390280A JPS56131803A (en) | 1980-03-19 | 1980-03-19 | Equipment with oil hydraulic cylinder of high speed and high pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3390280A JPS56131803A (en) | 1980-03-19 | 1980-03-19 | Equipment with oil hydraulic cylinder of high speed and high pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56131803A true JPS56131803A (en) | 1981-10-15 |
Family
ID=12399444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3390280A Pending JPS56131803A (en) | 1980-03-19 | 1980-03-19 | Equipment with oil hydraulic cylinder of high speed and high pressure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56131803A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6093716A (en) * | 1983-10-28 | 1985-05-25 | 株式会社日立製作所 | Hydraulic drive device |
-
1980
- 1980-03-19 JP JP3390280A patent/JPS56131803A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6093716A (en) * | 1983-10-28 | 1985-05-25 | 株式会社日立製作所 | Hydraulic drive device |
JPH0316522B2 (en) * | 1983-10-28 | 1991-03-05 | Hitachi Ltd |
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