JPS5649405A - Multistage cylinder - Google Patents
Multistage cylinderInfo
- Publication number
- JPS5649405A JPS5649405A JP12513779A JP12513779A JPS5649405A JP S5649405 A JPS5649405 A JP S5649405A JP 12513779 A JP12513779 A JP 12513779A JP 12513779 A JP12513779 A JP 12513779A JP S5649405 A JPS5649405 A JP S5649405A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- feed
- oil
- bypass path
- valve body
- 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
- Actuator (AREA)
Abstract
PURPOSE: To simplify the construction of a multistage cylinder which has such a function that a feed oil is bypassed when it is stretched at full length, by providing a feed or discharge oil path and a bypass path at the end of the innermost cylinder, and a valve body for opening or closing the bypass inside the cylinder.
CONSTITUTION: With a multistage cylinder contracted most, a valve body 14 is pushed onto a valve seat 15 by a spring 22 to close bypass path 11, and a connecting member 24 is inserted into a sleeve 27 so that a large diameter part 26 is separated from a small diameter part 29. As an oil is supplied under a pressure from a feed or discharge oil path 10, an external cylinder 2 and the first to thire cylinders 3W5 projected in sequence. When the fourth cylinder 6 beings to project from the cylinder 5 after the third cylinder 5 has been completely projected, the connecting member 24 appears out of the sleeve 27. Finally, when the cylinder 6 nearly completes its projection, the valve body 14 is retracted towards a basic end by the spring 22 to open the bypass path 11 so that a feed oil is bypassed through the bypass path 11.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12513779A JPS5649405A (en) | 1979-09-27 | 1979-09-27 | Multistage cylinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12513779A JPS5649405A (en) | 1979-09-27 | 1979-09-27 | Multistage cylinder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5649405A true JPS5649405A (en) | 1981-05-06 |
Family
ID=14902769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12513779A Pending JPS5649405A (en) | 1979-09-27 | 1979-09-27 | Multistage cylinder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5649405A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5849531A (en) * | 1981-09-19 | 1983-03-23 | Kyokuto Kaihatsu Kogyo Co Ltd | Cylinder supporting device for dumptruck |
-
1979
- 1979-09-27 JP JP12513779A patent/JPS5649405A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5849531A (en) * | 1981-09-19 | 1983-03-23 | Kyokuto Kaihatsu Kogyo Co Ltd | Cylinder supporting device for dumptruck |
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