JPS6097302U

JPS6097302U - hydraulic cylinder device

Info

Publication number: JPS6097302U
Application number: JP19020483U
Authority: JP
Inventors: 修二宮
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 1983-12-09
Filing date: 1983-12-09
Publication date: 1985-07-03

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の油圧シリンダ装置を示す系統図、第２図
は本考案に係る油圧シリンダ装置の一実施例を示す系統
図、第３図は第２図のフローティングレバニとパイロッ
ト弁との関係を示す説明図である。２・・・油筒、３・・・ピストン、４・・・ピストン出
力点、５・・・パイロット弁、７・・・ばね、訃・・フ
ローティングレバー、９・・・信号入力点、１０・・・
制御ポート、１１・・・圧油供給源、１２・・・オリフ
ィス、１３・・・パイロット弁入口、１５・・・ピスト
ン出力点、３゛１・・・油圧シリンダ、３２・・・上部
油筒、３３・・・上部小径ピストン、３６・・・圧力ス
イッチ、３８・・・強制閉鎖制御ポート。Fig. 1 is a system diagram showing a conventional hydraulic cylinder device, Fig. 2 is a system diagram showing an embodiment of the hydraulic cylinder device according to the present invention, and Fig. 3 is a system diagram showing an example of the hydraulic cylinder device according to the present invention. It is an explanatory diagram showing a relationship. 2... Oil cylinder, 3... Piston, 4... Piston output point, 5... Pilot valve, 7... Spring, butt... Floating lever, 9... Signal input point, 10...・・・
Control port, 11... Pressure oil supply source, 12... Orifice, 13... Pilot valve inlet, 15... Piston output point, 3゛1... Hydraulic cylinder, 32... Upper oil cylinder , 33... Upper small diameter piston, 36... Pressure switch, 38... Forced closing control port.

Claims

[Scope of utility model registration request]

A cylinder in which a piston inside the oil cylinder rises due to pressure oil supplied from the lower end of the oil cylinder, and the piston lowers due to the biasing force of a spring placed at the top of the piston, and one end moves in the feed direction in conjunction with the vertical movement of the piston. A floating lever that moves up and down and also moves up and down in response to input of an actuation signal from the other end of the cylinder, and a control port that is connected to the middle part of the floating lever and communicates with the cylinder when the floating lever is activated, to the pilot inlet side or the drain side. In a hydraulic cylinder machine equipped with a selectively switching pilot valve, an upper small-diameter piston is provided above the piston, and an upper oil cylinder in which the upper small-diameter piston slides is provided in the oil cylinder, and the The pilot valve is provided with a forced closing control port that communicates with the pilot inlet and supplies pressure oil to the upper part of the upper small diameter piston or the upper part of the piston only when both ends of the floating lever are at the bottom dead center position. Characteristic hydraulic cylinder device.