JPS55159302A - Safety system for use in pneumatic or hydraulic circuit - Google Patents
Safety system for use in pneumatic or hydraulic circuitInfo
- Publication number
- JPS55159302A JPS55159302A JP6564479A JP6564479A JPS55159302A JP S55159302 A JPS55159302 A JP S55159302A JP 6564479 A JP6564479 A JP 6564479A JP 6564479 A JP6564479 A JP 6564479A JP S55159302 A JPS55159302 A JP S55159302A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- stop position
- piston
- safety system
- power source
- 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 protect cylinder against runaway, by operating a cylinder to its stop position through detection of the stop position of a piston fitted in the cylinder, and supplying pneumatic air or hydraulic oil under control of the spool position of a two-position solenoid valve.
CONSTITUTION: The safety system of this invention comprises a limit switch 29 which gives an output signal when it detects the stop position of a piston for cylinder 26 in the direction C, another limit switch 30 which gives an output signal when it detects the stop position of the piston in the direction D, a control means which controls the position of two-position solenoid valve 27 in response to the output signals from said limit switches 29, 30, and a power source relay sequence circuit which connect the power source for driving the solenoid valve after passing of a predetermined time period from the time when a control power source (not shown) is connected. Through provision of such a safety system, the piston for cylinder 26 is held in its stop position in the direction D, so that it is protected against runaway.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6564479A JPS55159302A (en) | 1979-05-29 | 1979-05-29 | Safety system for use in pneumatic or hydraulic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6564479A JPS55159302A (en) | 1979-05-29 | 1979-05-29 | Safety system for use in pneumatic or hydraulic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55159302A true JPS55159302A (en) | 1980-12-11 |
Family
ID=13292921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6564479A Pending JPS55159302A (en) | 1979-05-29 | 1979-05-29 | Safety system for use in pneumatic or hydraulic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55159302A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108799213A (en) * | 2018-07-27 | 2018-11-13 | 佛山市恒力泰机械有限公司 | A kind of security system and method for refractory brick automatic hydraulic press |
-
1979
- 1979-05-29 JP JP6564479A patent/JPS55159302A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108799213A (en) * | 2018-07-27 | 2018-11-13 | 佛山市恒力泰机械有限公司 | A kind of security system and method for refractory brick automatic hydraulic press |
CN108799213B (en) * | 2018-07-27 | 2023-11-28 | 佛山市恒力泰机械有限公司 | Safety system and method of automatic hydraulic press for refractory bricks |
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