A brake cylinder unit

Details A brake cylinder unit A brake cylinder unit

B - Operations, Transporting

60

T

B60T 13/38 (2006.01) B60T 17/08 (2006.01) F01B 7/00 (2006.01) F16D 65/14 (2006.01) F16D 65/28 (2006.01)

Patent

CA 2394941

To provide a brake cylinder unit wherein both the normal brake and the spring brake that is used as a parking brake, etc., can act, and in addition wherein it is possible to shorten the axial direction length. In a brake cylinder unit (1) wherein both the normal- service brake means (2) and the spring brake means (3) can act, there is provided a clutch means (4) that links the rod (111) and the second piston (21) when the pressure fluid ceases to act on the second action chamber (24) of the spring brake means (3), and the first piston (11) starts to move towards to the rod (111). This clutch means (4) comprises a screw (31) that is provided on the rod (111), a nut member (32) that is provided on the second piston (21) such that it can rotate, and a stop means (33) that stops the rotation of the nut member (32) when the second piston (21) starts to move towards the rod (111).

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