Abstract: The invention relates to a track assembly for a tracked vehicle. Said track assembly includes a track support beam configured to support road wheels, a drive wheel member, and a drive arrangement for drive wheel member operation and an endless track disposed around said road wheels and drive wheel member. Said drive arrangement includes a drive unit for driving said drive wheel member, wherein said drive arrangement includes a drive axle being configured to be coaxially arranged relative to a centre axis of said drive wheel member for rotating said drive wheel member. Said drive unit is configured to be journaled in bearings to a portion of the drive axle. Said drive unit includes a torque arm configured to be connected to said track support beam so as to essentially prevent rotation of said drive unit about said centre axis.

Abstract: The present invention relates to a method (M1) performed by a control device (100) for controlling driving operation of an articulated tracked vehicle (V). Said articulated tracked vehicle (V) comprises a drive arrangement (120) for operating the vehicle. The articulated tracked vehicle (V) comprises a first vehicle unit (V1) and a second vehicle unit (V2) steerably connected to the first vehicle unit (V1) by means of a steering device (D) for mutually pivoting said vehicle units (V1, V2). The mutual pivoting comprises roll movement about a roll axis (X). The steering device (D) comprises a roll arrangement (A2) for said roll movement. The method comprises the step of controlling (S1) the roll arrangement (A2) of the steering device (D) so as to control mutual roll movement of said vehicle units (V1, V2). The present invention also relates to a control device for controlling driving operation of an articulated tracked vehicle.

Abstract: The present invention relates to a method (M1) performed by a control device (100) for controlling driving operation of an articulated tracked vehicle (V). Said articulated tracked vehicle (V) comprises a drive arrangement (120) for operating the vehicle. The articulated tracked vehicle (V) comprises a first vehicle unit (V1) and a second vehicle unit (V2) steerably connected to the first vehicle unit (V1) by means of a steering device (D) for mutually pivoting said vehicle units (V1, V2). The mutual pivoting comprises steering movement about a steering axis (Y). The steering device (D) comprises a steering arrangement (A1) for said steering movement. The method comprises the step of controlling (S1) the steering arrangement (A1) of the steering device (D) so as to control mutual steering movement of said vehicle units (V1, V2) for dynamic stability control. The present invention also relates to a control device for controlling driving operation of an articulated tracked vehicle.

Abstract: Disclosed is a track assembly comprising a track support beam for supporting road wheels, a drive wheel member, a drive arrangement for drive wheel member operation and an endless track disposed around said road wheels and drive wheel member. Said drive arrangement comprises a drive unit for drive wheel member drive, and a brake arrangement for braking of the drive wheel member. Said track support beam has an outer side facing away from a vehicle body and an inner side facing towards said vehicle body when said track assembly is connected to the vehicle body. Said drive arrangement comprises a drive axle coaxially arranged relative to a centre axis of said drive wheel member for rotating said drive wheel member. Said brake arrangement is configured to journal in bearings in connection to an outer portion of the drive axle protruding from the outer side of said track support beam.

Abstract: The invention relates to a tracked vehicle (10; 11) comprising a vehicle body (30, 32; 30), at least one track assembly (21) and a suspension device (S) for suspension of said track assembly (21) to said vehicle body (30) of said tracked vehicle (10; 11). Said track assembly (21) comprises a track support beam (22), a plurality of road wheels (23, 23a), at least one drive wheel (24), and an endless track (25). Said track support beam (22) is arranged to support said at least one drive wheel (24) and a plurality of road wheels (23, 23a). Said endless track is disposed around said at least one drive wheel (24) and plurality of road wheels (23, 23a). Said suspension device (S) comprises two pendulum arms (52, 54) which in one end are rotatably attached to a respective fastening point (P1b, P2b) in said vehicle body (30; 32, 30) and in the other end are rotatably attached to a respective fastening point (P1a, P2a) in the track support beam (22) of said track assembly (21).

Abstract: 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.

Abstract: Described is a track assembly for a tracked vehicle that comprises a track support beam configured to support road wheels, a drive wheel member, and a drive arrangement for drive wheel member operation and an endless track disposed around said road wheels and drive wheel member. Said drive arrangement comprises a motor device for driving said drive wheel member, a transmission device for transferring torque from said motor device to said drive wheel member and a brake arrangement for braking the drive wheel member. Said drive arrangement is configured to be coaxially arranged relative to a centre axis of said drive wheel member. A bearing configuration is arranged in said track support beam, said drive arrangement configured to be journaled in bearings to said bearing configuration for allowing rotation of said drive wheel member relative to said track support beam and for supporting said drive arrangement.

Abstract: 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.

Abstract: The invention relates to a track assembly for a tracked vehicle. Said track assembly comprises a track support beam configured to support road wheels, a drive wheel member, and a drive arrangement for drive wheel member operation and an endless track disposed around said road wheels and drive wheel member. Said drive arrangement comprises a brake arrangement for braking the drive wheel member, and a drive axle coaxially arranged relative to a centre axis of said drive wheel member for rotating said drive wheel member. Said brake arrangement is configured to be journaled in bearings in connection to a portion of the drive axle. Said brake arrangement comprises a torque arm configured to be connected to said track support beam so as to essentially prevent rotation of a brake housing of said brake arrangement about said centre axis.

Abstract: The invention relates to a track assembly for a tracked vehicle. Said track assembly comprises a track support beam configured to support road wheels, a drive wheel member, and a drive arrangement for drive wheel member operation and an endless track disposed around said road wheels and drive wheel member. Said drive arrangement comprises a drive unit for driving said drive wheel member, wherein said drive arrangement comprises a drive axle being configured to be coaxially arranged relative to a centre axis of said drive wheel member for rotating said drive wheel member. Said drive unit is configured to be journaled in bearings to a portion of the drive axle. Said drive unit comprises a torque arm configured to be connected to said track support beam so as to essentially prevent rotation of said drive unit about said centre axis.

Abstract: The present invention relates to a method (M1) performed by a control device (100) for controlling driving operation of an articulated tracked vehicle (V). Said articulated tracked vehicle (V) comprises a drive arrangement (120) for operating the vehicle. The articulated tracked vehicle (V) comprises a first vehicle unit (V1) and a second vehicle unit (V2) steerably connected to the first vehicle unit (V1) by means of a steering device (D) for mutually pivoting said vehicle units (V1, V2). The mutual pivoting comprises steering movement about a steering axis (Y). The steering device (D) comprises a steering arrangement (A1) for said steering movement. The method comprises the step of controlling (S1) the steering arrangement (A1) of the steering device (D) so as to control mutual steering movement of said vehicle units (V1, V2) for dynamic stability control. The present invention also relates to a control device for controlling driving operation of an articulated tracked vehicle.

Abstract: The present invention relates to a method (M1) performed by a control device (100) for controlling driving operation of an articulated tracked vehicle (V). Said articulated tracked vehicle (V) comprises a drive arrangement (120) for operating the vehicle. The articulated tracked vehicle (V) comprises a first vehicle unit (V1) and a second vehicle unit (V2) steerably connected to the first vehicle unit (V1) by means of a steering device (D) for mutually pivoting said vehicle units (V1, V2). The mutual pivoting comprises roll movement about a roll axis (X). The steering device (D) comprises a roll arrangement (A2) for said roll movement. The method comprises the step of controlling (S1) the roll arrangement (A2) of the steering device (D) so as to control mutual roll movement of said vehicle units (V1, V2). The present invention also relates to a control device for controlling driving operation of an articulated tracked vehicle.

Abstract: The invention relates to a tracked vehicle comprising a vehicle body and a track assembly pair. Said track assembly pair is arranged to suspendedly support said vehicle body allowing relative movement between said vehicle body and each track assembly (21) of said track assembly pair. Each track assembly (21) comprises a track support beam (22) configured to support a plurality of road wheels (23, 23a), a drive wheel (24), and a motor (110) for operating said drive wheel (24), an endless track (25) being disposed around said road wheels (23, 23a) and drive wheel (24). Said motor (110) is fixedly arranged to said track support beam (22). Said motor (110) is arranged in connection to the drive wheel (24) such that a motor axle essentially coaxially coincides with a centre axis (Z) of the drive wheel (24).

Abstract: The invention relates to a tracked vehicle comprising a vehicle body and a track assembly pair. Said track assembly pair is arranged to suspendedly support said vehicle body allowing relative movement between said vehicle body and each track assembly (21) of said track assembly pair. Each track assembly (21) comprises a track support beam (22) configured to support a plurality of road wheels (23, 23a), a drive wheel (24), and a motor (110) for operating said drive wheel (24), an endless track (25) being disposed around said road wheels (23, 23a) and drive wheel (24). Said motor (110) is fixedly arranged to said track support beam (22). Said motor (110) is arranged in connection to the drive wheel (24) such that a motor axle essentially coaxially coincides with a centre axis (Z) of the drive wheel (24).

Abstract: The invention relates to a tracked vehicle (11) comprising a vehicle body (30), at least one track assembly (21) and a suspension device (S). Said track assembly (21) is arranged to be supported by said vehicle body (30) by means of said suspension device (S), said track assembly comprising a track support beam (22) for supporting a plurality of road wheels (23, 23a), an endless track (25) being disposed around said road wheels. Said suspension device (S) comprises a bogie arrangement (50) rotatably attached to a fastening point (P0) of said vehicle body (30) about an axis of rotation (Z0) transversal to the longitudinal extension of said track assembly (21) and attached to said track support beam (22) in connection to at least two fastening points (P1, P2) so that the track support beam (22) is allowed to rotate in a rotational plane extending along the longitudinal extension of said track support beam (22) about said axis of rotation.

Abstract: The present invention relates to an amphibious vehicle comprising a vehicle frame and a cab supported by said vehicle frame, said cab being connected to said vehicle frame via hinge means so as to allow tilting of said cab about said hinge means between a closed position and an open position, wherein said vehicle comprises a sealing arrangement comprising sealing means arranged to provide liquid tight sealing between the cab and the vehicle frame in said closed position, wherein in the closed position, the sealing arrangement is arranged to provide a confined space for protecting components of said vehicle enclosed inside said space.

Abstract: The present invention relates to a tracked amphibious vehicle having a vehicle frame and a pair of track assemblies attachable to a respective side of said vehicle frame, said vehicle frame being arranged to support a tilting vehicle cab and an engine configuration, said vehicle frame comprising a pair of separated longitudinal wall elements extending in the longitudinal direction of the tracked vehicle and a bottom element connecting said pair of longitudinal wall elements so as to form a space for supporting and housing said engine configuration, wherein said vehicle frame comprises an extension frame and has a lateral extension so that no portion of the vehicle frame extends laterally passed a respective track of said pair of track assemblies so as to allow easy access to said space.

Abstract: The invention relates to a tracked vehicle (11) comprising a vehicle body (30), at least one track assembly (21) and a suspension device (S). Said track assembly (21) is arranged to be supported by said vehicle body (30) by means of said suspension device (S), said track assembly comprising a track support beam (22) for supporting a plurality of road wheels (23, 23a), an endless track (25) being disposed around said road wheels. Said suspension device (S) comprises a bogie arrangement (50) rotatably attached to a fastening point (P0) of said vehicle body (30) about an axis of rotation (Z0) transversal to the longitudinal extension of said track assembly (21) and attached to said track support beam (22) in connection to at least two fastening points (P1, P2) so that the track support beam (22) is allowed to rotate in a rotational plane extending along the longitudinal extension of said track support beam (22) about said axis of rotation.

Abstract: The invention relates to a tracked vehicle (10; 11) comprising a vehicle body (30, 32; 30), at least one track assembly (21) and a suspension device (S) for suspension of said track assembly (21) to said vehicle body (30) of said tracked vehicle (10; 11). Said track assembly (21) comprises a track support beam (22), a plurality of road wheels (23, 23a), at least one drive wheel (24), and an endless track (25). Said track support beam (22) is arranged to support said at least one drive wheel (24) and a plurality of road wheels (23, 23a). Said endless track is disposed around said at least one drive wheel (24) and plurality of road wheels (23, 23a). Said suspension device (S) comprises two pendulum arms (52, 54) which in one end are rotatably attached to a respective fastening point (P1b, P2b) in said vehicle body (30; 32, 30) and in the other end are rotatably attached to a respective fastening point (P1a, P2a) in the track support beam (22) of said track assembly (21).

Abstract: In one aspect of the present invention is provided an attachment device (100) for attachment of a trailing arm (54a) to a track support beam (22) intended to be connected, via said trailing arm (54a), to a center beam (30, 32) or other structural element situated between two track assemblies (21) of a tracked vehicle (10). The attachment device (100) is secured to the track support beam (22) and configured to attach the trailing arm (54a) to the track support beam (22) via an axis (X2) running above and substantially centrally along an upper side of the track support beam (22), in the longitudinal direction of the track support beam. In this way, a robust, structurally strong, suspension-admitting attachment device that is easy to manufacture and assemble is achieved.