A brake device for a railway vehicle includes: a regular electric motor having a rotatable regular-side rotor; a transmission shaft member extending from the regular electric motor in the direction of the rotation axis of the regular-side rotor and rotated by the rotational force output from the regular-side rotor; a conversion mechanism attached to the transmission shaft member and configured to convert the rotational motion of the transmission shaft member into linear motion; friction members configured to receive the linear motion to be pressed against a brake-applied member of the railway vehicle, so as to brake the railway vehicle; and a security power unit attached to the transmission shaft member and configured to output the rotational force to the transmission shaft member.

A brake device for a railway vehicle includes: a regular electric motor having a rotatable regular-side rotor; a transmission shaft member extending from the regular electric motor in the direction of the rotation axis of the regular-side rotor and rotated by the rotational force output from the regular-side rotor; a conversion mechanism attached to the transmission shaft member and configured to convert the rotational motion of the transmission shaft member into linear motion; friction members configured to receive the linear motion to be pressed against a brake-applied member of the railway vehicle, so as to brake the railway vehicle; and a security power unit attached to the transmission shaft member and configured to output the rotational force to the transmission shaft member.

A tread brake assembly for a rail car includes at least one brake block for pressing against a tread of a corresponding rail car wheel, a piston actuator powered by a fluid for driving the tread brake assembly, a brake rigging for transferring a braking stroke from the actuator piston to the at least one brake block, at least one sensor device for measuring at least one parameter of the tread brake assembly, and the tread brake assembly further includes a stroke detector having an active state in which the stroke detector activates the sensor device, wherein the stroke detector is configured to enter its active state upon detecting a force, stress, strain or motion of the brake block, the brake rigging and/or the actuator.

A tread brake assembly for a rail car includes at least one brake block for pressing against a tread of a corresponding rail car wheel, a piston actuator powered by a fluid for driving the tread brake assembly, a brake rigging for transferring a braking stroke from the actuator piston to the at least one brake block, at least one sensor device for measuring at least one parameter of the tread brake assembly, and the tread brake assembly further includes a stroke detector having an active state in which the stroke detector activates the sensor device, wherein the stroke detector is configured to enter its active state upon detecting a force, stress, strain or motion of the brake block, the brake rigging and/or the actuator.

A tread brake assembly for a rail car includes at least one brake block for pressing against a tread of a corresponding rail car wheel, a piston actuator powered by a fluid for driving the tread brake assembly, a brake rigging for transferring a braking stroke from the actuator piston to the at least one brake block, at least one sensor device for measuring at least one parameter of the tread brake assembly, and the tread brake assembly further includes a stroke detector having an active state in which the stroke detector activates the sensor device, wherein the stroke detector is configured to enter its active state upon detecting a force, stress, strain or motion of the brake block, the brake rigging and/or the actuator.

A tread brake assembly for a rail car includes at least one brake block for pressing against a tread of a corresponding rail car wheel, a piston actuator powered by a fluid for driving the tread brake assembly, a brake rigging for transferring a braking stroke from the actuator piston to the at least one brake block, at least one sensor device for measuring at least one parameter of the tread brake assembly, and the tread brake assembly further includes a stroke detector having an active state in which the stroke detector activates the sensor device, wherein the stroke detector is configured to enter its active state upon detecting a force, stress, strain or motion of the brake block, the brake rigging and/or the actuator.