JPS5520969A - Stroke variable type cylinder - Google Patents
Stroke variable type cylinderInfo
- Publication number
- JPS5520969A JPS5520969A JP9498478A JP9498478A JPS5520969A JP S5520969 A JPS5520969 A JP S5520969A JP 9498478 A JP9498478 A JP 9498478A JP 9498478 A JP9498478 A JP 9498478A JP S5520969 A JPS5520969 A JP S5520969A
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- valve
- hydraulic
- oil
- 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.)
- Granted
Links
Landscapes
- Actuator (AREA)
Abstract
PURPOSE: To make possible fine adjustment while preventing the leakage of oil through release or cutting off of a discharge circuit from one chamber of a cylinder in the cource of the stroke by means of a valve sleeve designed to open or close the conical valve body with the forward and backward movement of reciprocative control rod inserted thereinto in such a manner as to be free to be positioned.
CONSTITUTION: When the working oil with a proper pressue is introduced into a valve front chamber 25 from a hydraulic connection port 17 of an adjustment section case 8, it pushes a valve body 20 against the force of a spring 21 and inducted to a hydraulic chamber 6 via a valve rear chamber 24, a circular chamber 23, a path 22, and an oil chamber 6. Consequently, a piston 9 is advanced and in response, a rotary rod turns to retract a control rod 15 connected thereto. This pushes the valve body in the opening direction allowing the working oil to flow to the hydraulic chamber 6. Thus, the piston further advances. On the other hand, the working oil in a hydraulic chamber in front of the cylinder is drained to a tank from a hydraulic connection port 3 of a rod cover 4. In this manner, a piston rod 10 can be advanced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9498478A JPS5520969A (en) | 1978-08-01 | 1978-08-01 | Stroke variable type cylinder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9498478A JPS5520969A (en) | 1978-08-01 | 1978-08-01 | Stroke variable type cylinder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5520969A true JPS5520969A (en) | 1980-02-14 |
JPS5653645B2 JPS5653645B2 (en) | 1981-12-21 |
Family
ID=14125154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9498478A Granted JPS5520969A (en) | 1978-08-01 | 1978-08-01 | Stroke variable type cylinder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5520969A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148548A (en) * | 1974-10-25 | 1976-04-26 | Fuji Satsushi Kogyo Kk | Hikichigaidoyo madowaku |
JPS5321376A (en) * | 1976-08-11 | 1978-02-27 | Howa Mach Ltd | Self-acting intensifier |
-
1978
- 1978-08-01 JP JP9498478A patent/JPS5520969A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148548A (en) * | 1974-10-25 | 1976-04-26 | Fuji Satsushi Kogyo Kk | Hikichigaidoyo madowaku |
JPS5321376A (en) * | 1976-08-11 | 1978-02-27 | Howa Mach Ltd | Self-acting intensifier |
Also Published As
Publication number | Publication date |
---|---|
JPS5653645B2 (en) | 1981-12-21 |
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