Abstract: A gear box for a working machine is arranged to be positioned in a first set of speed-changing gears and a second set of speed-changing gears. The gear box includes a gear box housing, an input shaft configured to receive torque, and an output shaft for supplying torque out, from the gear box, wherein the output shaft is connected to a planetary gear set of the gear box, a friction disc clutch arrangement which is arranged between a ring gear of the planetary gear set and the gear box housing for enabling connection of the ring gear to the gear box housing, and a control unit configured to controllably alternate the friction disc clutch arrangement between: an engaged state and an at least partially engaged state when the gear box is positioned in the first set of speed-changing gears, and between a disengaged state and an at least partially engaged state when the gear box is positioned in the second set of speed-changing gears. A corresponding method for controlling a gear box is also provided.

Abstract: A gear box for a working machine is arranged to be positioned in a first set of speed-changing gears and a second set of speed-changing gears. The gear box includes a gear box housing, an input shaft configured to receive torque, and an output shaft for supplying torque out, from the gear box, wherein the output shaft is connected to a planetary gear set of the gear box, a friction disc clutch arrangement which is arranged between a ring gear of the planetary gear set and the gear box housing for enabling connection of the ring gear to the gear box housing, and a control unit configured to controllably alternate the friction disc clutch arrangement between: an engaged state and an at least partially engaged state when the gear box is positioned in the first set of speed-changing gears, and between a disengaged state and an at least partially engaged state when the gear box is positioned in the second set of speed-changing gears. A corresponding method for controlling a gear box is also provided.

Abstract: A protection device for a brake which is cooled by a coolant in a vehicle, the brake having a first active state in which a brake pressure is established in the brake for braking of the vehicle. The device comprises a sensor for measuring the temperature of the coolant of the brake, and a control arrangement interacting with the temperature sensor and the brake in order to reduce or remove the brake pressure of the brake in the first active state in the event of a temperature of the coolant in excess of a predefined value.

Abstract: A wheel brake for a vehicle including a brake disc unit adapted to brake the rotation of a rotation element, which is adapted to be drivingly connected to the wheel. The brake disc unit includes a first set of discs and a second set of discs arranged in an alternating manner in an axial direction. The discs in the first disc set are adapted to be rotationally rigidly connected to the rotation element. The brake disc unit includes at least one separator element, which is adapted to keep a sufficient distance between two adjacent discs of one of the disc sets for an intermediate disc from the other disc set to rotate at least substantially freely relative to the spaced discs when the brake disc unit is in a deactivated condition.

Abstract: An arrangement for reducing a rotational speed of a rotating member includes a first and second pressure member arranged at a distance from each other and an opposite sides of the rotating member for movement relative to each other between a retracted position and a forward position engaging the rotating member. The arrangement includes an adjustment device including a friction structure forming a friction joint with one of the pressure members for maintaining a position relative to one another provided a maximum friction force is not exceeded. The arrangement further includes a spring acting on the friction structure for separating the pressure members after having been compressed. The spring has a gradually increasing spring force between a non-compressed state and a totally compressed state.

Abstract: A brake for a work machine includes a brake rotor, a hydraulically operated device for actuating the brake by clamping the brake rotor, and an arrangement for damping jerks resulting from a sudden brake actuation. The brake rotor includes a pair of brake force transmitting discs and the damping arrangement is formed by a damping layer positioned between the discs and secured to each of the discs.

Abstract: The invention relates to a drive system for a vehicle driveline comprising a pair of interconnected first transverse drive shafts (31a, 31b) extending in opposite directions, each of which supports a ground engaging member, and a first arrangement (101) allowing said pair of first transverse drive shafts to rotate at different speeds. Said arrangement (101) comprises a pair of individually selectively engagable clutches (37a, 37b), one clutch for each transverse drive shaft, and each of said clutches (37a, 37b) is configured for engaging and disengaging, respectively, the associated transverse drive shaft (31a, 31b) to a driving connection with a source of motive power.

Abstract: A wheel brake for a vehicle including a brake disc unit adapted to brake the rotation of a rotation element, which is adapted to be drivingly connected to the wheel . The brake disc unit includes a first set of discs and a second set of discs arranged in an alternating manner in an axial direction. The discs in the first disc set are adapted to be rotationally rigidly connected to the rotation element. The brake disc unit includes at least one separator element, which is adapted to keep a sufficient distance between two adjacent discs of one of the disc sets for an intermediate disc from the other disc set to rotate at least substantially freely relative to the spaced discs when the brake disc unit is in a deactivated condition.

Abstract: Braking arrangement, and vehicles upon which the braking arrangement can be incorporated. The braking arrangement including a set of at least two wet brakes (1), the brakes being adapted to produce different maximum braking force values. Each of the brakes includes a housing (4) with two housing parts (13, 14) which can be separated from one another. A disk set is enclosed in each housing and a brake piston (17) for actuating the disk set is provided for the purpose of producing a braking effect on a rotating member connected to the disk set. The disk set of a first (1) of the brakes includes a first number of disks (7, 10) which are active for braking, and the disk set of a second of the brakes, which brake is intended for a smaller maximum braking force in relation to the first brake, includes, in relation to the first number, a smaller number of disks which are active for braking of the same size as the disks in the first brake.

Abstract: An arrangement for reducing a rotational speed of a rotating member includes a first and second pressure member arranged at a distance from each other and an opposite sides of the rotating member for movement relative to each other between a retracted position and a forward position engaging the rotating member. The arrangement includes an adjustment device including a friction structure forming a friction joint with one of the pressure members for maintaining a position relative to one another provided a maximum friction force is not exceeded. The arrangement further includes a spring acting on the friction structure for separating the pressure members after having been compressed. The spring has a gradually increasing spring force between a non-compressed state and a totally compressed state.

Abstract: A device for displacing an object a certain distance is disclosed. In one particular context, the device may be used in a brake piston. The device features a driving member and an interconnecting member located between the driving member and the object being driven (e.g., the brake piston). The driving member and the interconnecting member form a friction joint between them. The friction joint is strong enough that the driving member can push the object back to a retracted position when it is no longer being actuated, but weak enough that the interconnecting member, and hence the object, can be pushed forward relative to the driving member when the driving member reaches a maximum forward position. This lets the object (e.g., the piston) automatically adjust its non-actuated position so the same amount of fluid is required to move the piston forward as associated brake pads get thinner.

Abstract: The invention relates to a drive system for a vehicle driveline comprising a pair of interconnected first transverse drive shafts (31a, 31b) extending in opposite directions, each of which supports a ground engaging member, and a first arrangement (101) allowing said pair of first transverse drive shafts to rotate at different speeds. Said arrangement (101) comprises a pair of individually selectively engagable clutches (37a, 37b), one clutch for each transverse drive shaft, and each of said clutches (37a, 37b) is configured for engaging and disengaging, respectively, the associated transverse drive shaft (31a, 31b) to a driving connection with a source of motive power.

Abstract: Method and device for displacing an object (4) a certain distance between a forward position (9) and a rearward position (10). An unit (14) is included that is displaceable between a first position (12) and a second position (13) for driving the object a distance corresponding to the distance between the first and the second position utilizing a friction joint (15) when the driving unit (14) is displaced from the first position to the second position. The friction joint is designed to enable displacement of the driving unit (14) and the object (4) relative to each another under the influence of a certain lowest force. Furthermore, the device includes a member (16) arranged to act on the driving unit (14) in a direction towards the second position (13) utilizing a spring force and a component (21) for interconnecting the driving unit (14) and the object (4). The interconnecting component (21) has a surface (22) designed to form the friction joint (15) in cooperation with a surface (23) of the driving unit.

Abstract: A protection device for a brake which is cooled by a coolant in a vehicle, the brake having a first active state in which a brake pressure is established in the brake for braking of the vehicle. The device comprises a sensor for measuring the temperature of the coolant of the brake, and a control arrangement interacting with the temperature sensor and the brake in order to reduce or remove the brake pressure of the brake in the first active state in the event of a temperature of the coolant in excess of a predefined value.

Abstract: Braking arrangement, and vehicles upon which the braking arrangement can be incorporated. The braking arrangement including a set of at least two wet brakes (1), the brakes being adapted to produce different maximum braking force values. Each of the brakes includes a housing (4) with two housing parts (13, 14) which can be separated from one another. A disk set is enclosed in each housing and a means (17) for actuating the disk set is provided for the purpose of producing a braking effect on a rotating member connected to the disk set. The disk set of a first (1) of the brakes includes a first number of disks (7, 10) which are active for braking, and the disk set of a second of the brakes, which brake is intended for a smaller maximum braking force in relation to the first brake, includes, in relation to the first number, a smaller number of disks which are active for braking of the same size as the disks in the first brake.

Abstract: The invention relates to a friction brake (1) adjuster, comprising an elongated fastener (24) with first and second ends (27, 29). The fastener (24) is arranged in a bore (38) in a brake piston (7), which is displaceable relative to a brake housing (2) surrounding the friction brake (1) to a braking position and to a retracted position. The brake piston (7) can be displaced to the retracted position by a spring member (22).