JPS63106903U

JPS63106903U -

Info

Publication number: JPS63106903U
Application number: JP20266086U
Authority: JP
Priority date: 1986-12-29
Filing date: 1986-12-29
Publication date: 1988-07-11
Anticipated expiration: 2001-12-29
Also published as: JPH0520883Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の構成図、第２図
は同上縦断正面図、第３図は本考案の第２実施例
の縦断正面図、第４図は本考案の第３実施例の構
成図、第５図は同上縦断正面図である。１，５１…シリンダ駆動装置、３，３０，５３
…増圧装置、４，３６，５４…方向切換弁、６，
４３，５６…電磁弁、７，４２，５７…電気回路
、８，３４，５８…位置センサ、１２…増圧室、
１３…駆動室、１４，３３，６１…増圧ピストン
、Ｐ…入力ポート、Ａ…出力ポート、Ｒ…排気ポ
ート。 Fig. 1 is a configuration diagram of the first embodiment of the present invention, Fig. 2 is a longitudinal sectional front view of the same as above, Fig. 3 is a longitudinal sectional front view of the second embodiment of the invention, and Fig. 4 is a third embodiment of the invention. The configuration diagram of the example, FIG. 5 is a longitudinal sectional front view of the same. 1, 51...Cylinder drive device, 3, 30, 53
... Pressure booster, 4, 36, 54 ... Directional switching valve, 6,
43, 56... Solenoid valve, 7, 42, 57... Electric circuit, 8, 34, 58... Position sensor, 12... Pressure intensification chamber,
13... Drive chamber, 14, 33, 61... Pressure increase piston, P... Input port, A... Output port, R... Exhaust port.

Claims

[Scope of Claim for Utility Model Registration] A pressure increase piston is driven by supplying and discharging pressure fluid to a drive chamber in the cylinder using a solenoid valve, and the pressure fluid from the input port is increased in pressure in the pressure increase chamber in the cylinder. In a drive device for a fluid pressure actuator, which is equipped with a pressure increase device that outputs from an output port, and a directional switching valve that switches the output port to an input port and an exhaust port, the pressure increase stroke end is reached when the pressure increase piston is placed in a cylinder. The pressure increase device is provided with an electric circuit that controls the drive of the solenoid valve, and the pressure increase device detects when the pressure increase piston reaches the end of the pressure increase stroke of the cylinder, and A position sensor is provided which detects a state in which the cylinder is at the stroke end, and when the electric circuit is powered on, the electromagnetic valve is energized by the signal from the position sensor, and the pressure increasing piston is activated. The directional control valve is configured such that its excitation is released when the other reaches the stroke end, and the directional control valve is integrated with the pressure booster;
A fluid pressure actuator characterized by comprising a directional switching valve that switches an output port to an exhaust port and an input port and connects the output port to the exhaust port and the input port by applying and releasing the acting force of the pressure increasing piston that exceeds the pressure increasing stroke. drive unit.