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 planet carrier for a planetary gear transmission for driving a wheel includes a housing for accommodating a sun wheel and planet wheels of a planetary gear transmission. The housing has an inner end and an opposite outer end. The inner end of the housing is provided with an inner end wall having an opening for receiving a drive shaft for driving the sun wheel. The outer end of the housing is provided with an outer end wall having through holes for mounting the planet wheels axially into the housing in the direction from the outer end towards the inner end.

Provided herein is an electric tandem axle having a first drive axle assembly having a first differential assembly drivingly engaged with a first drive axle; a second axle drive assembly having a second drive axle drivingly engaged with a second differential assembly having a first axle output shaft and a second axle output shaft and an axle disconnect clutch; an inter-axle assembly is drivingly connected to the first axle drive assembly and the second axle drive assembly; a motor-generator in driving engagement with the first and second drive axle assemblies; a planetary drive unit including a selection clutch in driving engagement with the first differential assembly, the inter-axle assembly and the motor-generator; and a controller connected to the motor-generator, selection clutch and axle disconnect clutch. The controller is configured to selectively engage and disengage the selection clutch and axle disconnect clutch to facilitate different modes of operation.

A planetary gearset (6) has a sun gear (10) connected rotationally fixedly to an input shaft (8), a carrier (15) that carries planetary gears (11) and is connected rotationally fixedly to an output shaft (16), and a ring gear (14) fixedly connected to a housing (4) that encloses the planetary gearset (6). To reduce the noise emission from the planetary gearset with as little structural complexity as possible without reducing its efficiency due to pressure rings that are guided and slide against the planetary gears and the carrier, the sun gear (10), the planetary gears (11) and the ring gear (14) are provided with helical teeth and the input shaft (8) is at least indirectly supported on the housing (4), in both axial directions, by way of a single roller bearing (20).

An axle final drive assembly for a work vehicle is provided. The axle final drive assembly includes a final drive housing; an output shaft extending from the final drive housing; a planetary gear set contained in the final drive housing and having an element fixed to the output shaft; and an input member contained in the final drive housing providing rotational input to the planetary gear set for driving the output shaft. The planetary gear set, at least in part, is pivotally coupled to the input member.

An electric drive axle for a motor vehicle including an axle housing, an electric motor having an output shaft directly driven by a bevel pinion gear coupled thereto, a fixed ratio planetary gear arrangement, a differential unit including a differential gear arrangement housed within a differential case and a first clutch selectively operable to connect a portion of the planetary gear set to a stationary member of the drive axle so that the drive axle operates in a first gear ratio.

A drive unit for an electric vehicle, having an electric machine and a three-speed shift transmission with first, second and third shift elements, and two planetary sets which are coupled with each other. The first planetary set has a first sun gear shaft, first ring gear shaft and a first carrier shaft. The second planetary set has a second sun gear shaft, a second ring gear shaft and second carrier shaft. The first carrier shaft is fixed to the second ring gear shaft. The first sun gear shaft can be driven by an electric machine. The first ring gear shaft is fixed and output takes place via the second carrier shaft. The first shift elements are actuated to engage a first gear, the second shift elements are actuated to engage the second gear and the third shift elements are actuated to engage the third gear.

A housing unit for use in an axle end assembly including first and second housing parts, wherein one of the first and the second housing parts are disposed to be mutually rotatable and define a housing interior space, wherein the first housing part for establishing on a hub has a flange, wherein the second housing part for safeguarding against rotation in relation to a stator of a wheel suspension has an engagement portion, wherein a gear wheel assembly is disposed in the housing interior space to transmit a torque of a driveshaft to the first housing part, wherein one of the first and the second housing parts, when dismantling the housing unit from the wheel suspension, are mutually established that the housing interior space remains closed such that at least 70% of the outwardly protruding faces of the housing unit are closed in a fluid-tight manner.

Disclosed is an assembly to be mounted at an end portion of an axle of a vehicle, the axle including a differential carrier housing containing a differential and drive shafts, each having one end connected to the differential and a second end to connect to a wheel of the vehicle. The assembly includes a cover to be mounted at the end portion of the axle and fastened to a wheel hub, and a stop elastically compressible in the axial direction and fastened to the cover so as to face and contact one end face of a drive shaft. The stop includes a first part having a first cross-section S1 and configured to absorb in compression axial movements of the drive shaft, and a second part having a second cross-section S2 smaller than the first cross-section S1 and configured to provide a substantially point contact with the drive shaft end face.

Disclosed is an assembly to be mounted at an end portion of an axle of a vehicle, the axle including a differential carrier housing containing a differential and drive shafts, each having one end connected to the differential and a second end to connect to a wheel of the vehicle. The assembly includes a cover to be mounted at the end portion of the axle and fastened to a wheel hub, and a stop elastically compressible in the axial direction and fastened to the cover so as to face and contact one end face of a drive shaft. The stop includes a first part having a first cross-section S1 and configured to absorb in compression axial movements of the drive shaft, and a second part having a second cross-section S2 smaller than the first cross-section S1 and configured to provide a substantially point contact with the drive shaft end face.