JPS59191401U

JPS59191401U - Merging control valve

Info

Publication number: JPS59191401U
Application number: JP8666183U
Authority: JP
Inventors: 月本　年明; 松永　千春
Original assignee: 東芝機械株式会社
Priority date: 1983-06-07
Filing date: 1983-06-07
Publication date: 1984-12-19

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図は従来の制御弁および合流用制御弁を有する合流
回路を示す系統図、第２図は本考案の一実施例を示す合
流回路における合流用制御弁の系統図、第３図は第２図
に示した合流用制御弁の平面図、第４図は第３図に示し
た平面図に対する足面図、第５図は第４図のＩ−Ｉ線部
分を示す断面図、第６図は第３図の■−■線部分を示す
水平断面図。１．２・・・油圧ポンプ、３・・・方向切換弁、４・・
・シリンダ、５・・・制御弁、６・・・セレクタ弁１，
７・・・信号回路、８−　８ａ・・・ロジック弁、９．
　９８・・・チェック弁、１０・・・合流用制御弁、１
１・・・油入口、１３゜１３ａ、１３ｂ・・・供給通路
、１４・・・シリンダポート、１５・・・リリーフ弁、
１６・・・延長部、１７・・・下延部、２０・・・小孔
。補正　昭５８．　７．２８実用新案登録請求の範囲を次のように補正する。Ｏ実用新案登録請求の範囲一方の油圧ポンプの吐出油を方向切換弁の切換にてシリ
ンダに供給する制御弁と、この制御弁の方向切換弁に連
動するセレクタ弁の位置にて応答するロジック弁と、こ
のロジック弁の開位置により他方の油圧ポンプの吐出油
を前記ロジック弁、チェック弁を介して前記一方の方向
切換弁を介した圧油に合流せしめると共に前記シリンダ
に供給する合流回路における合流用制御弁において、前
記合流用制御弁の供給通路の油入口に近接して設けたリ
リーフ弁と、このリリーフ弁に対向する他方の供給通路
と、前記油入口の近傍に形成するシリンダポートと、こ
のシリンダポートと前記供給通路との係る位置に前記セ
レクタ弁に接続するロジック弁と、このロジック弁に応
動するチェック弁とを有することを特−とする合流用制
御弁。FIG. 1 is a system diagram showing a merging circuit having a conventional control valve and a merging control valve, FIG. 2 is a system diagram of a merging control valve in a merging circuit showing an embodiment of the present invention, and FIG. 2 is a plan view of the merging control valve shown in FIG. 4, a foot view of the merging control valve shown in FIG. The figure is a horizontal cross-sectional view showing a portion taken along the line ■-■ in FIG. 1.2... Hydraulic pump, 3... Directional switching valve, 4...
・Cylinder, 5... Control valve, 6... Selector valve 1,
7...Signal circuit, 8-8a...Logic valve, 9.
98... Check valve, 10... Merging control valve, 1
1... Oil inlet, 13° 13a, 13b... Supply passage, 14... Cylinder port, 15... Relief valve,
16... Extension part, 17... Lower extension part, 20... Small hole. Amended 1984. 7.28 The scope of claims for utility model registration is amended as follows. O Utility Model Registration Claims A control valve that supplies oil discharged from one hydraulic pump to a cylinder by switching a directional switching valve, and a logic valve that responds by the position of a selector valve that is linked to the directional switching valve of this control valve. The open position of this logic valve causes the discharge oil of the other hydraulic pump to merge with the pressure oil that has passed through the one direction switching valve through the logic valve and the check valve, and at the same time, merges in the merging circuit that supplies the oil to the cylinder. A relief valve provided in the vicinity of the oil inlet of the supply passage of the merging control valve, the other supply passage facing the relief valve, and a cylinder port formed near the oil inlet; A merging control valve comprising a logic valve connected to the selector valve and a check valve responsive to the logic valve at a position between the cylinder port and the supply passage.

Claims

[Scope of utility model registration request]

A control valve that supplies oil discharged from one hydraulic pump to a cylinder by switching a directional control valve, a logic valve that responds to the position of a selector valve linked to the directional control valve of this control valve, and a logic valve that responds to the opening of this logic valve. In the merging control valve in the merging circuit that causes the discharge oil of the other hydraulic pump to merge with the pressure oil that has passed through the one directional switching valve via the logic valve and the check valve depending on the position, and supplies the oil to the cylinder, the merging control valve a relief valve provided close to the oil inlet of the supply passage of the control valve; an extension part connected to the other supply passage opposite the relief valve and extending downward therefrom; and a part near the oil inlet. a logic valve having a cylinder port forming a downwardly extending portion, a small hole connected to the selector valve between the downwardly extending portion of the cylinder port and the extending portion of the supply passage; A merging control valve having a check valve.