The present application relate to a follow-up mechanism and a brake caliper unit for gauge-changeable bogie, the follow-up mechanism includes a follow-up connector, unlocking members that are located on two sides of the follow-up connector and movably connected to the follow-up connector, a transverse displacement recognition device movably connected to the unlocking members, a toothed locking and positioning device mounted on the follow-up connector, and at least two mutually parallel fixation members; the follow-up connector is in sliding fit with the fixation members, and sliders are fixedly connected at ends of the unlocking members; the toothed locking and positioning device is movably connected to the transverse displacement recognition device and fixation members, respectively; the brake caliper unit comprises a mounting bracket, the follow-up mechanism, and a brake actuator mounted on the mounting bracket, the follow-up mechanism is installed in cooperation with the brake actuator, and the fixation members are fixedly mounted on the mounting bracket. The present application can automatically recognize the orbit change of a train, the follow-up mechanism moves with a wheel by means of its stored elastic force and the unlocking members, and can self-locked at the target gauge position, thus realizing the change in position.

Disclosed is a friction set for a railway disk brake system for railway rolling stock including: a shoe holder including a receiving slideway; a friction shoe including a brake pad and a profiled shape configured for being slid into the receiving slideway, where the friction shoe includes a pneumatic conduit connecting a first space delimited by a first surface of the friction shoe to a second space delimited by a second opposite surface the friction shoe; at least one through hole arranged in the shoe holder and laid out so as to be facing the pneumatic conduit; and a pneumatic junction ring laid out in the pneumatic conduit forming a pneumatic guide between the through hole of the shoe holder and the pneumatic conduit of the friction shoe.

A braking system for a vehicle includes an indicator device provided to reliably indicate a state of a parking brake of the system, while being simple, convenient, and economical. The system includes a body that delimits a service brake pressure chamber and/or a parking brake pressure chamber, a parking brake movable relative to the body, an unlocking part for unlocking the parking brake connected to the parking brake pressure chamber and accessible from outside the body, and a parking brake indicator device. The indicator device is configured to receive a position of the unlocking part via a state pipe and an indicator of supply and/or the venting of the service brake pressure chamber and/or of the parking brake pressure chamber. This information is processed in to detect and indicate an engaged state or a disengaged state of the parking brake.

A braking system that includes a translatable braking mechanism selectively engageable with a wheel assembly, one or more artificial muscles contacting a support plate and disposed adjacent the translatable braking mechanism. Each of the one or more artificial muscles includes a housing having an electrode region and an expandable fluid region, a dielectric fluid housed within the housing, and an electrode pair positioned in the electrode region of the housing, the electrode pair having a first electrode and a second electrode. The electrode pair is actuatable between a non-actuated state and an actuated state such that actuation from the non-actuated state to the actuated state directs the dielectric fluid into the expandable fluid region, expanding the expandable fluid region thereby applying pressure to the translatable braking mechanism, inducing frictional engagement between the translatable braking mechanism and the wheel assembly.

A disc brake for railway vehicles comprising a pad and a disk on which the pad acts is provided. The pad comprises a base plate and a plurality of friction elements fixed to the base plate. The friction elements comprise first friction elements made of a first material and second friction elements made of a second material. The second material has a compressibility modulus (e.g., the pressure needed to compress the material by 1 mm) that is at least 5 MPa less smaller than the compressibility modulus of the first material. There may be more of the first friction elements than the second friction elements.

A braking torque sensor of a brake is provided, the braking torque sensor includes: a long circular shaft hole arranged on a brake arm of the brake; a connecting plate configured to detect a braking displacement which is generated by the hinge shaft of the brake element in a long circular shaft hole and varies with the magnitude of the friction force when the braking action is performed by the brake, and convert the detected displacement into a plate deformation of the connecting plate; and a tension sensor configured to convert the plate deformation generated due to the braking action on the connecting plate into force information, and transmit the force information outwards in a form of electrical signal or digital signal. The detection result of the braking torque sensor is consistent with the actual result, so that an abnormal condition of the brake can be detected in time.

A disc brake device has brake linings attached to brake levers that open and close in the lateral direction and sandwich a brake disc. A linking mechanism including a coupling device including lever mechanisms and a spindle opens and closes in conjunction with the lifting and lowering operation of a rod of a thruster, and the spindle is rotated in one direction by a one-way clutch in accordance with the relative displacement between the lever mechanisms and the coupling device to shorten an overall length of the coupling device, the rotation of the spindle is transmitted to an adjustment bolt screwed to a stopper on the lower end sides of the left and right brake levers via a flexible shaft, and the adjustment bolt protrudes downward with respect to the stopper.

A braking system for a vehicle includes a brake rigging and a service and/or parking brake designed to act on at least one braking member of the vehicle via the brake rigging. The braking system has at least one device with at least one lining support and at least one lining that is mechanically attached to the at least one lining support. The device comprises at least two bearing zones in contact with the at least one braking member, and at least one recessed zone located between the two bearing zones.

The invention relates to a railway braking system for a rail vehicle. The system includes a brake rigging, a service and/or parking brake designed to act on at least one braking member of the vehicle via the brake rigging (which is provided with at least one device having at least one lining support and at least one lining that is mechanically attached to the at least one lining support), and at least one force transmission link. The force transmission link has a first end mechanically attached to a support of the vehicle and an opposite second end mechanically attached to the at least one lining support. The at least one lining support comprises a fastening leg that includes a housing and a mounting member accommodated in the housing, and the second end of the at least one force transmission link is rotatably mounted in the mounting member.

A braking system for a vehicle includes brake rigging and a service and/or parking brake designed to act on at least one braking member of the rail vehicle via the brake rigging. At least one device has at least one lining support and at least one lining that is mechanically attached to the at least one lining support. The brake rigging is provided with at least one lever extending from the service and/or parking brake to the device. The at least one lever is mechanically attached to the at least one lining support in an attachment zone of the lining support which lies opposite the at least one lining and which is located no more than 35 mm from a transverse central axis of the device.