JPS6124505U

JPS6124505U - Hydraulic cylinder cushioning device

Info

Publication number: JPS6124505U
Application number: JP8962284U
Authority: JP
Inventors: 丈雄中島
Original assignee: 株式会社ナブコ
Priority date: 1984-06-15
Filing date: 1984-06-15
Publication date: 1986-02-13

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]

図面は、第１′図及び第２図は、この考案にかかる油圧
シリンダのクッション装置を設けた油圧シリングの１実
施例を示していて、第１図は、縦断面図、第２図ａは、
油温か低い場合の第１図の部分拡大図、第２図ｂは、油
温が高い場合の第１図の部分拡大図であり、第３図は、
従来の固定スリーブ式の油圧シリンダのクッション装置
を設けた油圧シリンダの縦断面図、第４図は、第３図の
部分拡大図である。１・・・油圧シリンダ、２・・・シリンダチューブ、３
・・・ピストンロツド、４，４０・・・クッションリン
グ、５・・・ピストン、７・・・ヘッド、８・・・ヘッ
ドカバー、９，１１０・・・油口、１０・・・ロツドカ
バー、１１・・・油の通路、１２，１２０・・・クッシ
ョンスリーブ、１４・・・ピストンロツド側のシリンダ
室、１５・・・ヘッド側のシリンダ室、１６・・・ピス
トンロッドとクッションスリーブの間隙、１７・・・ク
ッションリングとクッションスリーブの間隙、１８・・
・ピストンとクッションリングの間隙。In the drawings, Fig. 1' and Fig. 2 show an embodiment of a hydraulic cylinder equipped with a cushion device for a hydraulic cylinder according to the present invention, Fig. 1 is a longitudinal sectional view, and Fig. 2a is a longitudinal sectional view. ,
Fig. 1 is a partially enlarged view when the oil temperature is low, Fig. 2b is a partially enlarged view of Fig. 1 when the oil temperature is high, and Fig. 3 is a partially enlarged view of Fig. 1 when the oil temperature is high.
FIG. 4 is a vertical sectional view of a hydraulic cylinder provided with a conventional fixed sleeve type hydraulic cylinder cushioning device, and FIG. 4 is a partially enlarged view of FIG. 3. 1... Hydraulic cylinder, 2... Cylinder tube, 3
...Piston rod, 4,40...Cushion ring, 5...Piston, 7...Head, 8...Head cover, 9,110...Oil port, 10...Rod cover, 11... - Oil passage, 12, 120... Cushion sleeve, 14... Cylinder chamber on piston rod side, 15... Cylinder chamber on head side, 16... Gap between piston rod and cushion sleeve, 17... Gap between cushion ring and cushion sleeve, 18...
・Gap between piston and cushion ring.

Claims

[Scope of utility model registration request]

(1) In a cushion device consisting of a cushion sleeve disposed around the cover side in the cylinder chamber and a cushion ring fitted on the piston side, the cushion sleeve and/or the cushion ring are adjusted according to the temperature of the oil. A cushion device for a hydraulic cylinder, characterized in that the cushion device is made of a material that has a variable shape and adjusts a gap between the inner circumferential surface of the cushion sleeve and the outer circumferential surface of the cushion ring.

(2) Claim No. 1 for Utility Model Registration in which the material of the cushion sleeve and/or cushion ring is bimetallic
Cushion device for the hydraulic cylinder described in Section 1. {3} - A cushion device for a hydraulic cylinder according to claim 1, wherein the material of the cushion sleeve and/or cushion ring is a shape memory alloy.