JPS61158311U

JPS61158311U -

Info

Publication number: JPS61158311U
Application number: JP4133485U
Authority: JP
Priority date: 1985-03-22
Filing date: 1985-03-22
Publication date: 1986-10-01
Also published as: JPH0353767Y2

Description

[Brief explanation of the drawing]

第１図は本考案による曲げ修正機の断面図、第
２はその外観図、第３図および第４図は切替バル
ブの部分拡大図である。１２……ケーシング本体、１３……受けアーム
、１４……フツク、１５……ピストンロツド、１
８……油槽、１９……ポンプ機構、２４……シリ
ンダ室、２５……油供給通路、２６……後退用油
通路、２７……前進用油通路、２８……戻り通路
、３０……切替バルブ、３５……ピストン、３６
……貫通穴、３７……リリースバルブ、３７ａ…
…バルブロツド、３７ｂ，３７ｃ……バルブ頭、
３８……連通穴、４０……安全弁。 FIG. 1 is a sectional view of a bending correction machine according to the present invention, FIG. 2 is an external view thereof, and FIGS. 3 and 4 are partially enlarged views of a switching valve. 12...Casing body, 13...Receiving arm, 14...Hook, 15...Piston rod, 1
8...Oil tank, 19...Pump mechanism, 24...Cylinder chamber, 25...Oil supply passage, 26...Reverse oil passage, 27...Forward oil passage, 28...Return passage, 30...Switching Valve, 35...Piston, 36
...Through hole, 37...Release valve, 37a...
...Valve rod, 37b, 37c...Valve head,
38...Communication hole, 40...Safety valve.

Claims

[Scope of utility model registration request]

a casing body having an oil tank provided therein; a pump mechanism disposed within the casing body for pumping oil stored in the oil tank; and a cylinder formed within the casing body and to which pressure oil is supplied from the pump mechanism. A piston with a release mechanism, which is disposed slidably in the axial direction in the cylinder chamber and has a piston rod connected to the back; A piston, which is disposed in an oil passage that communicates the pump mechanism and the cylinder chamber, supplies pressurized oil. a switching valve for switching the path; a receiving arm for a rod-shaped member attached to the front part of the casing body; a correction hook attached to the tip of the piston rod and working together with the receiving arm to correct the bending of the rod-shaped member; In the bending correction machine for correcting the bending of a rod-shaped member, the release mechanism provided on the piston includes a through hole provided through the piston in the axial direction; a diameter smaller than the diameter of the through hole; The valve rod has a dimension slightly longer than the axial length of the piston, and a valve head that is provided at both ends of the valve rod and is larger than the diameter of the through hole. A bending correction machine characterized by comprising: a release valve mounted in a protruding state;