JPS6469803A - Control apparatus for cylinder - Google Patents

Control apparatus for cylinder

Info

Publication number
JPS6469803A
JPS6469803A JP22768487A JP22768487A JPS6469803A JP S6469803 A JPS6469803 A JP S6469803A JP 22768487 A JP22768487 A JP 22768487A JP 22768487 A JP22768487 A JP 22768487A JP S6469803 A JPS6469803 A JP S6469803A
Authority
JP
Japan
Prior art keywords
return
control mechanism
cylinder
return conduit
valve
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
Application number
JP22768487A
Other languages
Japanese (ja)
Inventor
Rei Ishichi
Yoshiaki Yamazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOUYOUSHIYA KK
Toyosha Co Ltd
KYB Corp
Original Assignee
TOUYOUSHIYA KK
Kayaba Industry Co Ltd
Toyosha Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TOUYOUSHIYA KK, Kayaba Industry Co Ltd, Toyosha Co Ltd filed Critical TOUYOUSHIYA KK
Priority to JP22768487A priority Critical patent/JPS6469803A/en
Publication of JPS6469803A publication Critical patent/JPS6469803A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lifting Devices For Agricultural Implements (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To increase the descending velocity of a cylinder during the idling of an engine by providing separately a return conduit for communicating a bleedoff control mechanism to a tank and a return conduit for communicating a return flow rate control mechanism to a tank. CONSTITUTION:The return conduit R1 of a bleedoff control mechanism comprising an unload valve 5 and a first electromagnetic control valve 7 and the return conduit R2 of a return flow rate control mechanism comprising a hold valve 12 and a second electromagnetic control valve 14 are provided separately, thereby the pressure losses on the return sides of both mechanisms become reduced, so that the descending velocity of a cylinder 1 can be increased during the engine idling.
JP22768487A 1987-09-11 1987-09-11 Control apparatus for cylinder Pending JPS6469803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22768487A JPS6469803A (en) 1987-09-11 1987-09-11 Control apparatus for cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22768487A JPS6469803A (en) 1987-09-11 1987-09-11 Control apparatus for cylinder

Publications (1)

Publication Number Publication Date
JPS6469803A true JPS6469803A (en) 1989-03-15

Family

ID=16864712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22768487A Pending JPS6469803A (en) 1987-09-11 1987-09-11 Control apparatus for cylinder

Country Status (1)

Country Link
JP (1) JPS6469803A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982476A (en) * 2014-05-27 2014-08-13 湖南联智桥隧技术有限公司 Hydraulic control loop

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261503A (en) * 1985-09-12 1987-03-18 株式会社クボタ Hydraulic lifting and falling apparatus for agricultural machine
JPS62194006A (en) * 1986-02-19 1987-08-26 Kayaba Ind Co Ltd Speed controller for actuator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261503A (en) * 1985-09-12 1987-03-18 株式会社クボタ Hydraulic lifting and falling apparatus for agricultural machine
JPS62194006A (en) * 1986-02-19 1987-08-26 Kayaba Ind Co Ltd Speed controller for actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982476A (en) * 2014-05-27 2014-08-13 湖南联智桥隧技术有限公司 Hydraulic control loop

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