JPS6335826U

JPS6335826U -

Info

Publication number: JPS6335826U
Application number: JP12761886U
Authority: JP
Priority date: 1986-08-21
Filing date: 1986-08-21
Publication date: 1988-03-08
Also published as: JPH0138354Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例である軸方向制動装
置の断面図である。第２図は第１図の装置のブレ
ーキシユーを示す正面図である。第３図は第１図
の装置の皿ばねを示す正面図である。第４図は第
１図における皿ばね周辺部を拡大して示す断面図
である。１０：ピストンロツド（作用軸）、１２：シリ
ンダ本体、２０：ポート部材（隔壁）、３４，３
６：環状シリンダボア、３８，４０：ピストン、
４４：ブレーキシユー（制動部材）、５０：前部
圧力室、６２：後部圧力室、７２：貫通穴、７４
：圧縮コイルスプリング。 FIG. 1 is a sectional view of an axial braking device that is an embodiment of the present invention. FIG. 2 is a front view showing the brake shoe of the device shown in FIG. 1. FIG. 3 is a front view of the disc spring of the device of FIG. 1; FIG. 4 is an enlarged sectional view showing the peripheral portion of the disc spring in FIG. 1. 10: Piston rod (action shaft), 12: Cylinder body, 20: Port member (partition wall), 34, 3
6: Annular cylinder bore, 38, 40: Piston,
44: Brake shoe (braking member), 50: Front pressure chamber, 62: Rear pressure chamber, 72: Through hole, 74
: Compression coil spring.

Claims

[Claims for Utility Model Registration] A cylinder body, a working shaft inserted through the cylinder body so as to be relatively movable in the axial direction, and a pair formed around the working shaft with a partition in the axial direction sandwiched therebetween. A pair of pistons are fitted in annular cylinder bores such that they can be slid in the axial direction with their respective rear portions facing the partition wall, and the pistons are disposed between the rear portions of the pair of pistons so as to move the pair of pistons in the forward direction. a compression coil spring that biases the piston, and pressurized air is supplied into a rear pressure chamber formed between the pair of pistons and the partition wall to advance the pair of pistons to respective braking positions, A front portion is formed in front of the pair of pistons to press a pair of braking members disposed within the cylinder body against the operating shaft to prevent relative movement between the operating shaft and the cylinder body. By supplying pressurized air into the pressure chambers and retracting the pair of pistons to their respective brake release positions, the pressure of the braking member on the operating shaft is released and the operating shaft and the cylinder body are moved relative to each other. In an axial braking device of a type that allows movement and always holds the pair of pistons at the braking position according to the biasing force of the compression coil spring, the inner diameter of the partition wall is equal to the outer diameter of the operating shaft. An axial braking device characterized in that a plurality of through holes are formed at equal angular intervals in the partition wall, and the compression coil springs are respectively arranged in the through holes.