A modular gear transmission and associated systems. The modular gear transmission has an assembled configuration, and the modular gear transmission includes a first transmission body and a first transmission gear set. The first transmission gear set includes a first protruding gear, a first intermediate gear set including at least one intermediate transmission gear, and a first transmission socket. The first transmission body is configured so that, when the modular gear transmission is in the assembled configuration, the first transmission body engages the first transmission gear set to hold the first transmission gear set in a rotatable configuration. The first protruding gear is configured so that, when the modular gear transmission is in the assembled configuration, the first protruding gear protrudes from the first transmission body and is rotatably engaged with the first intermediate gear set, the first protruding gear configured to rotate around a first referential axis of rotation.

An axle assembly and a method of manufacture. The axle assembly may include a differential carrier and a bearing support wall. The differential carrier may be made of a first material. The bearing support wall may be mounted to the differential carrier and may be made of a second material. The second material may have a greater stiffness than the first material.

A transmission includes a first housing part, a second housing part connected to the first housing part, and bearings accommodated in the first housing part and supporting an input shaft in a rotatable manner. The input shaft projects through a recess that extends through the second housing part, and a cover part is connected to the first housing part. The cover part or a flange part inserted into the cover part accommodates a sealing system, which provides sealing with respect to the input shaft. The second housing part has an inlet for lubricating oil, which terminates in an axial bore being open with respect to the side of the first housing part facing the cover part, and in a second annular space. The opening of the axial bore facing the cover part is covered and/or sealed by the cover part, and rolling elements of two bearings at least also restricting and/or surrounding the second annular space together with the first housing part.

A standardized modular drive assembly includes: a gear unit module, which includes a gear unit mounted on a gear unit base plate, the gear unit having an output shaft which is adapted to be coupled with a conveyor device pulley shaft; and a motor module, which includes an electric motor mounted on a motor base plate, the motor base plate being able to be joined and connected to the gear unit base plate in an exchangeable manner, and the motor module having a torque link which is adapted to be coupled with a conveyor device support structure.

A two-speed transmission system integrated with an inner rotor hub motor, including an inner rotor hub motor, a steering knuckle, a fastening screw, a first transmission casing, a second transmission casing, a screw, a first planetary gear train, a second planetary gear train, a first electromagnetic brake, a second electromagnetic brake, a tire, a wheel rim, a rim bolt, a rim nut, a wheel hub, a shaft end bolt, a brake disc and a brake caliper. This invention also provides an electric vehicle, which balances the requirements for dynamics performance and driving economics and achieves better overall performances. The two-speed transmission system of this invention realizes gear shifting and long-term no-power parking braking.

A two-speed transmission system integrated with an inner rotor hub motor, including an inner rotor hub motor, a steering knuckle, a fastening screw, a first transmission casing, a second transmission casing, a screw, a first planetary gear train, a second planetary gear train, a first electromagnetic brake, a second electromagnetic brake, a tire, a wheel rim, a rim bolt, a rim nut, a wheel hub, a shaft end bolt, a brake disc and a brake caliper. This invention also provides an electric vehicle, which balances the requirements for dynamics performance and driving economics and achieves better overall performances. The two-speed transmission system of this invention realizes gear shifting and long-term no-power parking braking.

An earth working machine (10), encompassing a drive motor (42) and a working apparatus (22) drivable by the drive motor (42) so as to move rotationally, the drive motor (42) being connected to the working apparatus (22), for transfer of a torque, with interposition of a shiftable transmission (50; 150) comprising at least two gearing stages having different torque transfer ratios, is characterized in that by means of a first gearing stage of the shiftable transmission (50), an input shaft (48), coupled on the input side to the drive motor (42), of the shiftable transmission (50) is connectable in torque-transferring fashion directly to an output shaft (52), coupled on the output side to the working apparatus (22), of the shiftable transmission (50) so as to rotate together at the same rotation speed; and by means of a second gearing stage of the shiftable transmission (50), the input shaft (48) is connectable in torque-transferring fashion, with interposition of a transmission assemblage (64), to the output shaft (52) so as to rotate together at different rotation speeds.

An earth working machine (10), encompassing a drive motor (42) and a working apparatus (22) drivable by the drive motor (42) so as to move rotationally, the drive motor (42) being connected to the working apparatus (22), for transfer of a torque, with interposition of a shiftable transmission (50; 150) comprising at least two gearing stages having different torque transfer ratios, is characterized in that by means of a first gearing stage of the shiftable transmission (50), an input shaft (48), coupled on the input side to the drive motor (42), of the shiftable transmission (50) is connectable in torque-transferring fashion directly to an output shaft (52), coupled on the output side to the working apparatus (22), of the shiftable transmission (50) so as to rotate together at the same rotation speed; and by means of a second gearing stage of the shiftable transmission (50), the input shaft (48) is connectable in torque-transferring fashion, with interposition of a transmission assemblage (64), to the output shaft (52) so as to rotate together at different rotation speeds.

A line of vehicle transmissions is provided. The vehicle line includes a first multi-stage gear train assembly with at least two stages, a second multi-stage gear train assembly with at least three stages, and a housing including a first section removably attached to a second section. The second housing section is configured to receive the first and second multi-stage gear train assemblies in different product arrangements.

A linear actuator (10) for use in a modular assembly of such actuators comprises an actuator body (11), a shaft (12) guided by the body to be displaceable relative thereto in the sense of tlte longitudinal axis (13) of the shaft and a drive motor enclosed in the body and operable to axially displace the shaft relative to the body in two mutually opposite directions. The body has two mutually opposite sides (15a, 15b) respectively lying in two substantial parallel spaced-apart planes, which each represent a reference plane for positioning the body side-by-side with the body of another such actuator, and a further side (17b) connecting the two mutually opposite sides and stepped to form a projection (18) receiving the shaft (12) with the axis (13) parallel to the two planes and a rebate (19) beside the projection to permit the body to interlock with the body of another such actuator at that further side. The projection (18) and rebate (19) are of substantially the same width in the sense of the spacing of the two planes and the shaft (12) is disposed substantially centrally of the projection (18) so that when the body (11) is interlocked with that of another such actuator the pitch of the shaft axes (13) is equal to that width.