The invention discloses a spring brake. The spring brake comprises a cylinder pedestal assembly, a cylinder body assembly, a piston assembly and a screw rod; the front end of the cylinder body assembly is connected with a front cover, the piston assembly is rotationally connected with a nut, one end of the screw rod is connected with the nut which is arranged in the cylinder body assembly through threads, the other end of the screw rod is arranged outside the cylinder body assembly and is connected with the end of the screw rod, energy storage springs are arranged in the cylinder body assembly and between the piston assembly and the front cover, manual release springs sleeve the screw rod between the front cover and the end of the screw rod, a ratchet wheel is installed at the periphery of the nut, the ratchet wheel is correspondingly matched with a ratchet pawl, the nut is connected with a ratchet wheel key, the nut can slide relative to the ratchet pawl in an axial direction, the screw rod is connected with a front cover key, and the screw rod can slide relative to the front cover in the axial direction. The spring brake is mainly applied on railway vehicles, and replaces current hand brakes; by pulling a front lever of a brake cylinder through a hinge mechanism, parking braking is realized, the complete relieving pressure of the parking braking is 450kPa, and the effective stroke of the parking braking is 100+/-5mm.
Spring brake
2015-07-01
Patent
Electronic Resource
English
IPC: | B61H Bremsen oder andere Verzögerungseinrichtungen ausgebildet für Schienenfahrzeuge , BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES |
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