JPS60107404U

JPS60107404U - Control device in hydraulic drive

Info

Publication number: JPS60107404U
Application number: JP19807883U
Authority: JP
Inventors: 高村　昭房
Original assignee: 株式会社　興洋
Priority date: 1983-12-23
Filing date: 1983-12-23
Publication date: 1985-07-22
Also published as: JPH0412244Y2

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]

図面は本考案に係る制御装置の実施例を示し、第１図は
縦断面図、第２図は第１図のＩ−Ｉ線断面図、第３図は
第１図の■−■線断面図、第４図はスライド弁の切換作
動状態を示す縦断面図、第５図および第６図は操作レバ
ーのバネ機構部の作用説明図、第７図は油圧回路図であ
る。１・・・・・・方向制御弁、２・・・・・・圧力補償弁
、３，４・・・・・・リリーフ弁、５・・・・・・ハウ
ジング、６・・・・・・スリーブ、７・・・・・・スラ
イド弁、８・・・・・・入口ポート、９・・・・・・Ａ
ポート、１０・・・・・・Ｂポート、１１．　１２・・
・・・・出口ポート、１３・・・・・・連結路、１４・
・・・・・中立部、１５，１６・・・・・・切込部、１
７・・・・・・操作部材、１８・・・・・・係合ピン、
１９・・・・・・切込み部、２０・・・・・・螺旋溝、
２１・・・・・・回転軸、２２・・・・・・操作レバー
、２３・・・・・・ストッパー機構、２４・・・・・・
蓋部材、２５・・・・・・バネ収容部、２６・・・・・
・係合ピン、２７・・・・・・作動部材、２７ａ・・・
・・・係合片、２８・・・・・・バネ、２９・・・・・
・固定ピン、３１・・・・・・ドレーンポート、３２・
・・・・・小径Ｌ　　３３・・・・・・シリンダ、３４
・・・・・・ピストン、３５・・・・・・−次圧力室、
３６・・・・・・スプリング、３７・・・・・・二次圧
力室、３８・・・・・・圧力導入路、３９・・・・・・
圧力排出路、４０・・・・・・一方向通路、４２ａ。４２ｂ・・・・・・弁座口、４３　ａ、　　４３　ｂ・
・・・・・圧力調整室、４４　ａ、　４４　ｂ−弁体、
４５ａ、４５ｂ・・・・・・バネ、４６ａ、４６ｂ・・
・・・・調整ネジ、４７，４８．４９・・・・・・通路
、Ｐ・・・・・・ポンプポート、Ｔ・・・・・・タンク
ポート、Ｘ・・・・・・可変逃げ部。The drawings show an embodiment of the control device according to the present invention, in which FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a cross-sectional view taken along the line II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line ■-■ in FIG. 4 are longitudinal cross-sectional views showing the switching operation state of the slide valve, FIGS. 5 and 6 are explanatory views of the operation of the spring mechanism of the operating lever, and FIG. 7 is a hydraulic circuit diagram. 1... Directional control valve, 2... Pressure compensation valve, 3, 4... Relief valve, 5... Housing, 6... Sleeve, 7...Slide valve, 8...Inlet port, 9...A
Port, 10... B port, 11. 12...
...Exit port, 13...Connection path, 14.
...neutral part, 15, 16... cut part, 1
7... Operating member, 18... Engaging pin,
19... cut portion, 20... spiral groove,
21... Rotating shaft, 22... Operating lever, 23... Stopper mechanism, 24...
Lid member, 25... Spring housing portion, 26...
- Engagement pin, 27... Actuation member, 27a...
...Engagement piece, 28...Spring, 29...
・Fixing pin, 31...Drain port, 32・
...Small diameter L 33...Cylinder, 34
...Piston, 35...-Next pressure chamber,
36...Spring, 37...Secondary pressure chamber, 38...Pressure introduction path, 39...
Pressure discharge passage, 40... One-way passage, 42a. 42b...Valve seat port, 43a, 43b.
...Pressure adjustment chamber, 44 a, 44 b-valve body,
45a, 45b... Spring, 46a, 46b...
...adjustment screw, 47, 48.49 ... passage, P ... pump port, T ... tank port, X ... variable relief part .

Claims

[Scope of utility model registration request]

(a) A sleeve, a slide valve slidably housed within the sleeve, and an operating lever provided in conjunction with the slide valve, the slide valve being slidable by rotating the operating lever. A directional control valve configured to move to switch the flow path of fluid from the pump port, (b) comprising a cylinder, and a piston slidably provided in the cylinder, and with the piston as a boundary, the direction control valve is configured to switch the flow path of fluid from the pump port. a primary pressure chamber which is connected to the pump port side at one end side and is also connected to the tank port side via a variable relief part, and the opening degree of the variable relief part is changed by sliding of the piston; a pressure compensating valve forming a secondary pressure chamber equipped with a spring that presses the piston toward the primary pressure chamber on the end side; (c) a pressure regulating chamber having a valve seat opening at the tip; and two relief valves configured to close the valve seat opening by pressing the valve body against the valve seat opening by a spring action provided in the pressure adjustment chamber. The valve seat ports of both the IJ and IJ-F valves are respectively connected to the secondary pressure chambers of the pressure compensation, and the pressure adjustment chamber of the one of the IJ and IJ-F valves is connected to the load of one of the directional control valves. The port side and the pressure adjustment chamber of the other relief valve are connected to the other load port side of the directional control valve, and the slide valve is connected to the secondary pressure chamber when the directional control valve is connected to the secondary pressure chamber. A pressure introduction path is formed that selectively connects one of the load ports to the secondary pressure chamber, and the operating lever has a spring mechanism configured to return the operating lever to a neutral position. A control device for a hydraulic drive device, comprising: