JPS589225U

JPS589225U - Pressure adjustment device in dictation equipment

Info

Publication number: JPS589225U
Application number: JP10210481U
Authority: JP
Inventors: 橋本　徳彦
Original assignee: 福井機械株式会社
Priority date: 1981-07-08
Filing date: 1981-07-08
Publication date: 1983-01-21

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図および第２図は、この考案の実施例を示し、第１
図は、この考案による圧力調整弁を含むグイクッション
装置の油圧回路の構成図、第２図は圧力調整弁の詳細構
造を示す縦断面図、第３図は油圧回路内の圧力波形を示
すグラフ、第４図は、パイロット作用油の他の実施例を
示す油圧回路の構成図である。１・・・・・・圧力調整装置、２・・・・・・クッショ
ンシリンダ、４・・・・・・電磁弁、１１・・・・・・
主弁、１２・・・・・・パイロット弁、１３−、−・・
ピストン、１９・・・・・・パイロット圧室内Figures 1 and 2 show an embodiment of this invention;
The figure is a configuration diagram of the hydraulic circuit of the Guicushion device including the pressure regulating valve according to this invention, Fig. 2 is a longitudinal sectional view showing the detailed structure of the pressure regulating valve, and Fig. 3 is a graph showing the pressure waveform in the hydraulic circuit. , FIG. 4 is a configuration diagram of a hydraulic circuit showing another embodiment of the pilot working oil. 1...Pressure regulator, 2...Cushion cylinder, 4...Solenoid valve, 11...
Main valve, 12... Pilot valve, 13-, -...
Piston, 19...Inside the pilot pressure chamber

Claims

[Scope of utility model registration request]

It is installed in the hydraulic circuit that connects the cushion cylinder of the cushion device and the cushion tank in which working oil is stored, and opens when the pressure on the cylinder reaches a predetermined setting value. A main valve that releases oil to the tank, a bypass passage that is installed inside the main valve and that lets some of the working oil escape to the tank, a pilot pressure chamber that lets some of the working oil flow into the cylinder, and a bypass passage that is inside the main valve that lets some of the working oil flow into the tank. A pilot valve that closes the passage, a pilot valve closing mechanism that closes the pilot valve with a force above the set pressure, and a force of the pilot valve closing mechanism when the pressure in the pilot pressure chamber reaches a required pressure below the set pressure. A pressure regulating device in a Guicushion device, consisting of a poor pilot valve opening mechanism that opens a pilot valve against the pressure.