JPS60131702U

JPS60131702U - Directional valve control device

Info

Publication number: JPS60131702U
Application number: JP19736884U
Authority: JP
Inventors: 中里　英一
Original assignee: カヤバ工業株式会社
Priority date: 1984-12-31
Filing date: 1984-12-31
Publication date: 1985-09-03

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区、第２区、第３区、第４図は従来のコントロール
方式によるブロック図、第５図、第６図は参考例に係る
ブロック図、第７図、第８図は本考案の一実施態様に係
るブロック図、第９図は切換装置の一実施例に係る斜視
区である。　　−１・・・・・・操作レバー、２・・・
・・・方向切換弁、４・・間作業機、７゛・・曲ソレノ
イド、−１６・・・・・・ポテンションメータ、１７・
・・・・・ソレノイド、１８・・間機械的フィードバッ
ク、１９・・・・・・エンジン、２０・・・・・・ジェ
ネレータ、２１・・・・・・切換装置、２２・・・・・
・機械的フィードバック、２４・・・・・・ソレノイド
、２５・・・・・・機械的フィードバック。Section 1, Section 2, Section 3, and FIG. 4 are block diagrams based on the conventional control method, FIGS. 5 and 6 are block diagrams according to the reference example, and FIGS. FIG. 9, a block diagram according to one embodiment, is a perspective view of one embodiment of the switching device. -1... Operation lever, 2...
... Directional switching valve, 4... Interval work device, 7゛... Curved solenoid, -16... Potentiometer, 17.
... Solenoid, 18 ... Mechanical feedback, 19 ... Engine, 20 ... Generator, 21 ... Switching device, 22 ...
- Mechanical feedback, 24... Solenoid, 25... Mechanical feedback.

Claims

[Scope of utility model registration request]

(1) In a hydraulic actuator that drives a cylinder and work equipment by switching a directional control valve with an operating lever, a mechanical feedback mechanism and an electrical feedback mechanism are provided between the directional control valve and the work equipment. A control device for a directional valve in which each feedback mechanism is switched to either one via a switching device, so that position control or draft control can be selectively used as either a mechanical type or an electric type.

(2) 'FM pneumatic feedback mechanism attaches a potentiometer to the lift arm and gives an electrical feedback signal proportional to the lift arm angle to the solenoid,
A control device for a directional control valve as claimed in claim 1, wherein mechanical feedback is fed back to the directional control valve by a solenoid.

(3) An electrical feedback mechanism connects the solenoid to the generator and provides an electrical feedback signal to the solenoid that is proportional to the engine speed detected by the generator, and the solenoid provides mechanical feedback to the directional valve. A control device for a directional control valve according to claim 1 of the utility model registration claim.