Provided is a hand brake, comprising a hand wheel (4), a chain (5), an enclosure (1), a drive shaft assembly (3) which is disposed in the enclosure (1), bull gear (13), and base assembly; the hand wheel (4) is connected to the drive shaft assembly (3), one end of the chain (5) is fixed to the bull gear (13) by means of rivets, and the main shaft of the bull gear (13) is a chain winding shaft (2). The hand brake further comprises a limiting device disposed on the chain winding shaft (2) between the bull gear (13) and the base (22); the limiting device comprises a first bearing (10), a torsion spring (11), a guide plate (9), and a guide plate holder (23). Installing the hand brake not only prevents the problem of the chain interfering with the movable pulley when the hand brake is deployed and thus affecting the performance of the hand brake, but also provides for a better appearance.

Provided is a hand brake, comprising a hand wheel (4), a chain (5), an enclosure (1), a drive shaft assembly (3) which is disposed in the enclosure (1), bull gear (13), and base assembly; the hand wheel (4) is connected to the drive shaft assembly (3), one end of the chain (5) is fixed to the bull gear (13) by means of rivets, and the main shaft of the bull gear (13) is a chain winding shaft (2). The hand brake further comprises a limiting device disposed on the chain winding shaft (2) between the bull gear (13) and the base (22); the limiting device comprises a first bearing (10), a torsion spring (11), a guide plate (9), and a guide plate holder (23). Installing the hand brake not only prevents the problem of the chain interfering with the movable pulley when the hand brake is deployed and thus affecting the performance of the hand brake, but also provides for a better appearance.

A railway vehicle parking brake that can provide the appropriate tension to the braking system using a motor, a brake chain drum interconnected to the motor to take up or release a brake chain, a load arm deflects in response to tension in the brake chain, and a switch that is closed by the load arm when it deflects. A movable sheave interconnects the brake chain and the load arm and is positioned between the brake chain drum and a fixed sheave over which the brake chain is looped. A control method considers the position of the first switch to determine whether to the motor off when applying the brakes and the amount of current being drawn by the motor to determine whether to the motor off because of a system failure.

A railway vehicle parking brake that can provide the appropriate tension to the braking system using a motor, a brake chain drum interconnected to the motor to take up or release a brake chain, a load arm deflects in response to tension in the brake chain, and a switch that is closed by the load arm when it deflects. A movable sheave interconnects the brake chain and the load arm and is positioned between the brake chain drum and a fixed sheave over which the brake chain is looped. A control method considers the position of the first switch to determine whether to the motor off when applying the brakes and the amount of current being drawn by the motor to determine whether to the motor off because of a system failure.

A brake cylinder includes a locking device for mechanical brake force locking, in particular for rail vehicles, and a service brake piston which can be axially moved inside a housing, which can be moved by applying a pressure medium thereto, and which is coupled to a piston tube, said piston tube being provided with a non-self-locking thread which is engaged with a threaded nut which is rotatably mounted in the housing, and the locking device cooperating with toothing of the threaded nut. The brake cylinder is designed such that the locking device comprises one or more pawl(s), a control piston, an emergency release tappet, and a locking element of the emergency release tappet.

A brake cylinder includes a locking device for mechanical brake force locking, in particular for rail vehicles, and a service brake piston which can be axially moved inside a housing, which can be moved by applying a pressure medium thereto, and which is coupled to a piston tube, said piston tube being provided with a non-self-locking thread which is engaged with a threaded nut which is rotatably mounted in the housing, and the locking device cooperating with toothing of the threaded nut. The brake cylinder is designed such that the locking device comprises one or more pawl(s), a control piston, an emergency release tappet, and a locking element of the emergency release tappet.

A powered hand brake for locomotive brakes that latches a brake chain into a locked position after the brake cylinder has applied the locomotive brakes. A computer controlled brake system may be interconnected to the brake cylinder and the latch and programmed to set the latch into the latched position when the brake cylinder has moved the locomotive brake into the applied position. An actuator is coupled to the brake chain to take up slack in the brake chain as the brake chain moves between the first and second positions. The actuator can comprise a motor or a tensioning cylinder that takes up slack in the brake chain after the brakes have been applied. Alternatively, the actuator may comprise a linkage connecting the brake chain to the locomotive brake so that the slack in the brake chain is taken up as the brakes are applied.

A powered hand brake for locomotive brakes that latches a brake chain into a locked position after the brake cylinder has applied the locomotive brakes. A computer controlled brake system may be interconnected to the brake cylinder and the latch and programmed to set the latch into the latched position when the brake cylinder has moved the locomotive brake into the applied position. An actuator is coupled to the brake chain to take up slack in the brake chain as the brake chain moves between the first and second positions. The actuator can comprise a motor or a tensioning cylinder that takes up slack in the brake chain after the brakes have been applied. Alternatively, the actuator may comprise a linkage connecting the brake chain to the locomotive brake so that the slack in the brake chain is taken up as the brakes are applied.

A handwheel-actuated, extreme low-profile parking brake mechanism for railway cars, which can be housed in a housing that together with the handwheel does not exceed a width of 6¼ from the side surface of the car, in this way it meets the requirements of the applicable normative specification defined by the same AAR association and by the FRA regulations, thus fitting into the reduced space available for this brake mechanisms on one side of the railway car.

A handwheel-actuated, extreme low-profile parking brake mechanism for railway cars, which can be housed in a housing that together with the handwheel does not exceed a width of 6¼ from the side surface of the car, in this way it meets the requirements of the applicable normative specification defined by the same AAR association and by the FRA regulations, thus fitting into the reduced space available for this brake mechanisms on one side of the railway car.