Disclosed is a brake arrangement for a tracked vehicle comprising a brake housing. Said brake arrangement is journaled in bearings in connection to a drive unit driven drive axle configured to rotate a drive wheel member. Said brake arrangement comprises a set of ring shaped friction elements arranged about said drive axle and configured to be pressed together in the axial direction for providing a braking function. Said brake arrangement further comprises a ring shaped parking brake piston device coaxially arranged around said drive axle in connection to a radially outer portion of said set of friction elements. Said parking brake piston device is configured to provide pressure in the axial direction against said radially outer portion of said set of friction elements based on a parking brake action so as to press said elements together for preventing rotation of said drive axle, preventing movement of drive wheel member.

Disclosed is a brake arrangement for a tracked vehicle. The brake arrangement comprises a brake housing. Said brake arrangement is journaled in bearings in connection to a drive unit driven drive axle configured to rotate a drive wheel member. Said brake arrangement comprises a set of ring shaped friction elements arranged about said drive axle and configured to be pressed together in the axial direction for providing a braking function. Said set of friction elements comprises a first end friction element being the outermost friction element against which pressure is configured to be provided for said braking function. Said first end friction element has a thickness in the axial direction which is thicker than the remaining set of friction elements so as to facilitate distributing an even pressure on said set of friction elements when said set of friction elements are pressed together for efficient friction braking function.

Disclosed is a brake arrangement for a tracked vehicle. The brake arrangement comprises a brake housing. Said brake arrangement is journaled in bearings in connection to a drive unit driven drive axle configured to rotate a drive wheel member. Said brake arrangement comprises a set of ring shaped friction elements arranged about said drive axle and configured to be pressed together in the axial direction for providing a braking function. Said set of friction elements comprises a first end friction element being the outermost friction element against which pressure is configured to be provided for said braking function. Said first end friction element has a thickness in the axial direction which is thicker than the remaining set of friction elements so as to facilitate distributing an even pressure on said set of friction elements when said set of friction elements are pressed together for efficient friction braking function.

A brake actuator is disclosed having a transfer element configured to be moved along an actuating direction and to actuate a brake by moving into at least one actuating position; an actuating mechanism configured to move the transfer element into the at least one actuating position to actuate the brake, wherein the actuating mechanism is configured to be movable along the actuating direction; and a distancing mechanism configured to move the actuating mechanism from a non-operating position into an operating position along the actuating direction. The transfer element and the actuating mechanism are configured such that the transfer element is located in the actuating position when the actuating mechanism is located in the non-operating position.

A hydraulic machine (1) comprising first and second brake elements (92, 93), a spring washer (65) tending to urge the first and second brake elements (92, 93) in a braking direction, and a brake release piston (61) configured to act on the spring washer (65) in a direction opposing the braking direction, the hydraulic machine being characterized in that the brake release piston (61) comprises a primary brake release piston (61a) associated with a primary brake release chamber (62a), and a secondary brake release piston (61b) associated with a secondary brake release chamber (62b), said primary and secondary chambers (62a, 62b) extending radially around the shaft (2) in such a manner that projections of the primary brake release chamber (62a) and of the secondary brake release chamber (62b) onto a plane perpendicular to a longitudinal axis (X-X) defined by the axis of rotation of the hydraulic machine (1) are superposed, at least in part.

A brake used by a mine hoist, a car, a high-speed train, etc. Gas springs are used to replace belleville springs, and a positive pressure is also always applied to brake pads to both ensure and increase the brake reliability and a positive pressure per unit area. The brake resolves problems such as deformation of the belleville springs, a serious change in an elastic force, sudden cracking and decompression, inconvenient monitoring, and a manufacturing difficulty. A brake head floating structure is used to reduce a requirement on end face runout of a brake disc. An oil-gas linkage plunger pump is used to replace a hydraulic station, which greatly reduces manufacturing costs, and reduces energy consumption.

A brake used by a mine hoist, a car, a high-speed train, etc. Gas springs are used to replace belleville springs, and a positive pressure is also always applied to brake pads to both ensure and increase the brake reliability and a positive pressure per unit area. The brake resolves problems such as deformation of the belleville springs, a serious change in an elastic force, sudden cracking and decompression, inconvenient monitoring, and a manufacturing difficulty. A brake head floating structure is used to reduce a requirement on end face runout of a brake disc. An oil-gas linkage plunger pump is used to replace a hydraulic station, which greatly reduces manufacturing costs, and reduces energy consumption.

A hydraulic motor for vehicle wheel includes a hydrodynamic element, a reaction element, an oil distributor rotating as one with the reaction element, and a brake mounted between the two elements to oppose the rotational movement. The hydrodynamic element has a flange that surrounds the oil distributor. On its radially exterior face, it has means for rotationally coupling with the rotary discs of the brake. The brake is thus positioned around the distributor.

A hydraulic motor for vehicle wheel includes a hydrodynamic element, a reaction element, an oil distributor rotating as one with the reaction element, and a brake mounted between the two elements to oppose the rotational movement. The hydrodynamic element has a flange that surrounds the oil distributor. On its radially exterior face, it has means for rotationally coupling with the rotary discs of the brake. The brake is thus positioned around the distributor.

A vehicle includes a chassis, a tractive element coupled to the chassis, and a parking brake system. The chassis includes at least one of a transmission or a structural frame. The parking brake system includes a parking brake configured to brake the tractive element when engaged. The parking brake is configured to be disengaged to permit rotation of the tractive element in response to the parking brake receiving a fluid. The parking brake system includes a fluid supply configured to supply the fluid to the parking brake to disengage the parking brake. The fluid supply is configured to stop supplying the fluid in response to a component of the vehicle ceasing operation. The parking brake system includes a pump coupled to the chassis and configured to supply the fluid to the parking brake at least when the component of the vehicle is not operating.