The purpose of the present invention is to reduce the size of and simplify a parking brake device. This parking brake device is provided to a side of a cylinder (1) of a brake cylinder of a caliper brake device, said side being where a rod (3) protrudes. A second piston (12) is provided inside a second cylinder (11) coaxially coupled to the cylinder, said second piston being provided so as to be capable of coaxial relative displacement with respect to the rod (3). A one-way clutch (14) is provided which engages/disengages as a result of the pressing/release of the pressing of the second piston on a switch (13) disposed facing a cylinder-side side surface of the second piston. A parking-operation auxiliary spring (15) is provided in a cylinder-side space (11c) inside the second cylinder. Moreover, a manual release piston (16) is provided in a space (11b) at a side opposite to the cylinder side. A manual release rod (17) is fixed to a tip of the manual release piston in the second cylinder. Furthermore, a parking release lever (18) is provided which simultaneously presses the second piston in a rod-retraction direction, and the manual release rod in the rod-retraction direction.
Parking brake device for railway-vehicle caliper brake device
2016-02-03
Patent
Electronic Resource
English
PARKING BRAKE DEVICE IN CALIPER BRAKE DEVICE FOR RAILWAY VEHICLE
European Patent Office | 2016
|Parking brake device in caliper brake device for railway vehicle
European Patent Office | 2019
|