JPS58104469U

JPS58104469U - relief valve

Info

Publication number: JPS58104469U
Application number: JP124582U
Authority: JP
Inventors: 緒方　浩二郎; 直毅三柳
Original assignee: 日立建機株式会社
Priority date: 1982-01-11
Filing date: 1982-01-11
Publication date: 1983-07-15

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 the drawing]

第１図は、従来の油圧回路の一例を示す図、第２図は、
従来のクロスオー具リリーフ弁の一例の構成を示す断面
図、第３図は、この考案の一実施例の構成を示す断面図
、第４図は、第３図のＣ−Ｃ断面およびＤ−Ｄ断面の一
部を示す図である。符号の説明、１・・・油圧モータ、２・・・・・・リリ
ーフ装置またはクロスオーバリリーフ弁、３．４・・・
リリーフ弁、５・・・弁体、６ａ、　　６ｂ・・・ポペ
ット、７ａ。７ｂ、　　１１−・・ばね４８１＋１１１１通孔、９ａ
、　９ｂ、　　１２ａ。１２ｂ−・・油路、Ｉ　Ｄａ、　１０ｂ−・・可動シー
ト、１３ａ、　　１３ｂ−・・隙間、Ａ、　Ｂ−・・主
回路、ａ、　ｂ・・・副回路。Fig. 1 is a diagram showing an example of a conventional hydraulic circuit, and Fig. 2 is a diagram showing an example of a conventional hydraulic circuit.
3 is a cross-sectional view showing the structure of an example of the conventional cross-over relief valve, FIG. 4 is a cross-sectional view showing the structure of an embodiment of the present invention, and FIG. It is a figure which shows a part of cross section. Explanation of symbols: 1...Hydraulic motor, 2...Relief device or crossover relief valve, 3.4...
Relief valve, 5... Valve body, 6a, 6b... Poppet, 7a. 7b, 11-...Spring 481+1111 through hole, 9a
, 9b, 12a. 12b--Oil passage, I Da, 10b--Movable seat, 13a, 13b--Gap, A, B--Main circuit, a, b--Sub circuit.

Claims

[Scope of utility model registration request]

In a relief valve, a poppet biased by a first spring and a movable plate biased by a second spring are provided coaxially and facing each other in a series of through holes provided in a valve body. The oil passage end provided in the movable seat and the tip of the poppet are brought into contact with each other, and a stopper is provided to prevent movement of the poppet and the movable seat by a predetermined amount or more in the direction of the biasing force; A relief valve characterized in that they are arranged coaxially and symmetrically facing each other.