JPS5831403U

JPS5831403U - Composite control valve with attachment valve added

Info

Publication number: JPS5831403U
Application number: JP12532681U
Authority: JP
Inventors: 松永　千春
Original assignee: Toshiba Machine Co Ltd
Current assignee: Shibaura Machine Co Ltd
Priority date: 1981-08-25
Filing date: 1981-08-25
Publication date: 1983-03-01

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は一般的な複合制御弁の断面図、第２図は従来例
の断面図、第３図は本考案の一実施例の断面図である。１１・・・複合制御弁、１３．３６・・・入口室、１４
・・・ポンプ、１５，１６，１７．３７・・・スプール
、２８．４９・・・戻り通路、５１・・・スプール弁、
５２・・・弁体、５４・・・スプーノペ５７・・・パイ
ロット室、６１・・・パイロット切換弁、６２・・・シ
リンダ、６４・・・弁部材、６６・・・室、６７・・・
通路、７１・・・減圧弁。FIG. 1 is a sectional view of a general composite control valve, FIG. 2 is a sectional view of a conventional example, and FIG. 3 is a sectional view of an embodiment of the present invention. 11...Composite control valve, 13.36...Inlet chamber, 14
... pump, 15, 16, 17.37 ... spool, 28.49 ... return passage, 51 ... spool valve,
52... Valve body, 54... Spoon ope 57... Pilot chamber, 61... Pilot switching valve, 62... Cylinder, 64... Valve member, 66... Chamber, 67...
Passage, 71...pressure reducing valve.

Claims

[Scope of claim for utility model registration] A composite control valve with an attachment valve consisting of the following configuration. An inlet chamber connected to a hydraulic power source such as a pump, and a spool for selectively supplying pressurized oil in the same chamber to the actuator and passing return oil from the actuator to the tank (the position of which can be switched); an attachment valve having a return passage connected to the tank; (B) an inlet chamber connected to the hydraulic power source via the attachment valve; and a plurality of spools connected to the same population chamber in a neutral state; A composite control valve having a bypass passage connected to the tank from a return passage that passes through the center of the spool and is downstream thereof. (C1 A hollow valve provided between the bypass passage and the return passage of the composite control valve. A loading valve having a body, a spool slidably inserted into the valve body, and a pilot chamber configured by one side of the spool and the cylinder. a cylinder, a valve member fixed to the spool end of the attachment valve to slide within the cylinder, and a chamber provided approximately in the center of the cylinder and connected to the pilot chamber of the loading valve via a pressure reducing valve. and a passage provided on both sides of the chamber of the cylinder and connected to the return passage of the attachment valve. The pressure reducing valve connected to the chamber of the switching valve.