JPS62156677U

JPS62156677U -

Info

Publication number: JPS62156677U
Application number: JP4396386U
Authority: JP
Priority date: 1986-03-27
Filing date: 1986-03-27
Publication date: 1987-10-05

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す断面図、第２
図は第１図―線視図、第３図は従来技術を示
す断面図である。１…弁装置、２…主弁、３…フオースピストン
、４…テーパーカム、５…パイロツトスプール、
６…制御モータ、７…軸、９…弁本体、１１…可
動スリーブ、１９…突部、２０…固定部材、２１
…バツクアツプレバー、２２…基部、２５…カム
部、２６…コイルバネ。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figures are FIG. 1--a perspective view, and FIG. 3 is a sectional view showing the prior art. 1... Valve device, 2... Main valve, 3... Force piston, 4... Taper cam, 5... Pilot spool,
6... Control motor, 7... Shaft, 9... Valve body, 11... Movable sleeve, 19... Projection, 20... Fixed member, 21
...Backup lever, 22...Base, 25...Cam part, 26...Coil spring.

Claims

[Scope of utility model registration request]

A valve device in which a pilot spool is connected to the shaft of a control motor, and the position of the pilot spool is controlled by the operation of the motor, and the valve opening is controlled by moving the main valve according to the amount of movement of the pilot spool. In this, the shaft of the control motor has a double-shaft structure, and the other end of the shaft is provided with a protrusion in a direction perpendicular to the shaft, and the base of the back-up lever rotatably supported by a fixed member is provided with the By providing a cam portion that is non-contact within the range in which the control motor rotates in response to an electric signal and in contact beyond that range, the back-up lever can be manually rotated when the control motor is inoperable due to the electric signal. 1. A manual operating device for a pilot valve, characterized in that the pilot spool is moved by rotating the shaft of a control motor via a cam portion at the base of the pilot valve, thereby adjusting the amount of oil.