JPS56164208A - Constant-velocity multistage cylinder device - Google Patents

Constant-velocity multistage cylinder device

Info

Publication number
JPS56164208A
JPS56164208A JP6785380A JP6785380A JPS56164208A JP S56164208 A JPS56164208 A JP S56164208A JP 6785380 A JP6785380 A JP 6785380A JP 6785380 A JP6785380 A JP 6785380A JP S56164208 A JPS56164208 A JP S56164208A
Authority
JP
Japan
Prior art keywords
valve
check valve
opening
intermediate cylinder
opening device
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
JP6785380A
Other languages
Japanese (ja)
Inventor
Kazuo Eto
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.)
NIPPON KIKI KOGYO KK
Original Assignee
NIPPON KIKI KOGYO KK
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 NIPPON KIKI KOGYO KK filed Critical NIPPON KIKI KOGYO KK
Priority to JP6785380A priority Critical patent/JPS56164208A/en
Publication of JPS56164208A publication Critical patent/JPS56164208A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To enable automatic supply of oil for the cylinder device during the operation thereof by providing a valve-opening device which opens a check valve forcibly when an intermediate cylinder device lowers down to a prescribed position.
CONSTITUTION: The piston member 9 of the 1st intermediate cylinder 6 is provided with a communication orifice 24 communicating a space 11 witha space 15, while the check valve 25 and the valve-opening device 26 for opening the check valve 25 forcibly are provided in the communication orifice 24. The tip of the valve-opening device 26 which projects from the lower end of a valve seat 40 is set long enough to open the check valve 25 when it contacts with an end plate 1 and is pushed by thereby on the occasion that the intermediate cylinder 6 takes the lowermost position. Every time when the intermediate cylinder 6 takes the lowermost position, the check valve 25 is opened forcedly by the valve-opening device 26 through the intermediary of a groove 45 in the axial direction and thereby oil gets from a supply-discharge port 3 to the spaces 11, 15 and 12 through the check valve 25 found in the position of opening, thereby the oil pressure inside the cyliner device is made equal every part.
COPYRIGHT: (C)1981,JPO&Japio
JP6785380A 1980-05-23 1980-05-23 Constant-velocity multistage cylinder device Pending JPS56164208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6785380A JPS56164208A (en) 1980-05-23 1980-05-23 Constant-velocity multistage cylinder device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6785380A JPS56164208A (en) 1980-05-23 1980-05-23 Constant-velocity multistage cylinder device

Publications (1)

Publication Number Publication Date
JPS56164208A true JPS56164208A (en) 1981-12-17

Family

ID=13356919

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6785380A Pending JPS56164208A (en) 1980-05-23 1980-05-23 Constant-velocity multistage cylinder device

Country Status (1)

Country Link
JP (1) JPS56164208A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009298590A (en) * 2007-06-23 2009-12-24 Herrmann Ag Lift platform for vehicle and other object
CN105298980A (en) * 2015-10-12 2016-02-03 江苏恒立高压油缸股份有限公司 Compact type high-reliability double-acting multistage cylinder
CN108443264A (en) * 2018-07-23 2018-08-24 江苏恒立液压股份有限公司 Level Four oil cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009298590A (en) * 2007-06-23 2009-12-24 Herrmann Ag Lift platform for vehicle and other object
US8684141B2 (en) 2007-06-23 2014-04-01 Herrmann Ag Lifting platform for vehicles and other objects
CN105298980A (en) * 2015-10-12 2016-02-03 江苏恒立高压油缸股份有限公司 Compact type high-reliability double-acting multistage cylinder
CN108443264A (en) * 2018-07-23 2018-08-24 江苏恒立液压股份有限公司 Level Four oil cylinder

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