JPS6123510U

JPS6123510U - Leak prevention device in series circuit

Info

Publication number: JPS6123510U
Application number: JP10822684U
Authority: JP
Inventors: 郁三北岡
Original assignee: 内田油圧機器工業株式会社
Priority date: 1984-07-19
Filing date: 1984-07-19
Publication date: 1986-02-12
Also published as: JPH0135921Y2

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来例の線図、第２図は本考案の実施例の線図
である。１・・・供給回路、３，４・・・切換弁、５，６・・・
アクチュエータ、７，８・・・作動回路、９，１０・・
・負荷保持弁、１１，１２・・・ドレン弁、１３，１４
，１５；１６・・・接続回路、ａ，８ａ，７ｂ，
８ｂ・・・回路、３ａ，４ａ・・・中立位置、３ｂ，４
ｂ・・・切換位置、１１ａ，１２ａ”・ド
レン位置、ｌｌｂ，１２ｂ・・・遮断位置。FIG. 1 is a diagram of a conventional example, and FIG. 2 is a diagram of an embodiment of the present invention. 1... Supply circuit, 3, 4... Switching valve, 5, 6...
Actuator, 7, 8... Operating circuit, 9, 10...
・Load holding valve, 11, 12...Drain valve, 13, 14
, 15; 16... connection circuit, a, 8a, 7b,
8b...Circuit, 3a, 4a...Neutral position, 3b, 4
b...Switching position, 1 1 a, 1 2 a''/drain position, llb, 12b... shutoff position.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

供給回路に複数個の切換弁をシリーズに接続し、各切換
弁にシーケンス弁その他の負荷保持弁を介在させた作動
回路を介してアクチュータを接続するようにしたものに
於いて、該切換弁にこれの切換作動と連動するドレシ弁
を連設し、該ドレン弁に、該作動回路の負荷圧発生側の
回路の負荷保持弁と切換弁との間と、その反対側の回路
とを夫々接続回路により接続し、該ドレン弁の該切換弁
の中立位置に対応した位置をタンクに両接続回路が連通
ずる連通位置に形成すると共に該切換弁の切換位置に対
応した位置を前記接続回路を遮断する遮断位置に形成し
て成るシリーズ回路に於けるリーク防止装置。In a system in which a plurality of switching valves are connected in series to a supply circuit, and an actuator is connected to each switching valve via an operating circuit in which a sequence valve or other load holding valve is interposed, A drain valve is connected in conjunction with the switching operation, and the drain valve is connected between the load holding valve and the switching valve of the circuit on the load pressure generation side of the operating circuit, and to the circuit on the opposite side. connected by a circuit, a position of the drain valve corresponding to the neutral position of the switching valve is formed as a communication position where both connection circuits communicate with the tank, and a position corresponding to the switching position of the switching valve is used to cut off the connection circuit. A leak prevention device in a series circuit formed at a cutoff position.