JPS59173696U

JPS59173696U - Pneumatic automatic hydraulic jack

Info

Publication number: JPS59173696U
Application number: JP6827883U
Authority: JP
Inventors: 王　敦煌
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-05-07
Filing date: 1983-05-07
Publication date: 1984-11-20

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図は、本考案装置の斜視図、第２図は、来者案気動
式自動油圧ジヤツキの縦断面図、第３図及び第４図は、
それぞれ方向チェンジバルブの切換え状態を示す要部拡
大断面図である。１・・・ニアコンプレッサ、８・・・エアオイルコンバ
ータ、９・・・小ピストン、１０・・・方向チェンジバ
ルブ、１１・・・オイルタンク、１２・・・油圧シリン
ダ、１３・・・大ピストン、１４．２７・・・チェック
バルブ、２８・・・戻し通路。一第１図 −ゲ２ン　　　、６　　　　２ん　　ん　八　　　　　　　
　５ノ４　　　　　　　１２Fig. 1 is a perspective view of the device of the present invention, Fig. 2 is a longitudinal sectional view of the visitor-guided automatic hydraulic jack, and Figs. 3 and 4 are:
FIG. 6 is an enlarged cross-sectional view of a main part showing a switching state of each direction change valve. DESCRIPTION OF SYMBOLS 1... Near compressor, 8... Air-oil converter, 9... Small piston, 10... Direction change valve, 11... Oil tank, 12... Hydraulic cylinder, 13... Large piston , 14.27...Check valve, 28...Return passage. Figure 1 - Gen 2, 6 2, 8
5 no 4 12

Claims

[Scope of utility model registration request]

It consists of an air-oil converter with a small piston, a hydraulic cylinder with a large piston, and an oil tank.
The air-oil converter has an air chamber and an oil chamber that are separated from each other by the small piston, and of these, the oil chamber and the oil tank are configured to transfer oil in the oil tank only to the oil chamber side. Similarly, the oil chamber and the large hydraulic cylinder communicate via a check valve that guides the oil in the oil chamber only to the large hydraulic cylinder side, and the oil tank and the hydraulic cylinder communicate with each other via a check valve. The air-oil converter and the oil tank communicate with each other via an openable and closable passage, and between the air-oil converter and the oil tank, compressed air from a near compressor is alternately supplied to the air chamber and the oil tank; When supplying air to the oil tank, open the air chamber side to the outside.
A non-moving automatic hydraulic jack characterized by being equipped with a direction change valve that changes according to the movement of the small piston.