A method for protecting transmissions against damage during transport, in that at least one transmission component located in the force flow is braced in itself. Thereafter, transporting the transmission to a desired site and then removing the brace to free the drive input and the drive output shafts.

A transmission system has a housing including a wall and a gear support extending from the wall. The gear support has an outer surface and an inner surface defining a passage. The outer surface includes a seal receiving portion and a seal support axially spaced from the seal receiving portion. A seal is positioned about the gear support at the seal receiving portion. A sleeve is arranged on the outer surface of the gear support between the wall and the seal and a pump drive gear is mounted on the gear support and is supported by the sleeve. The pump drive gear includes an outer toothed surface, an inner surface, and a bushing arranged on the inner surface, the bushing extending about the sleeve.

A transmission system has a housing including a wall and a gear support extending from the wall. The gear support has an outer surface and an inner surface defining a passage. The outer surface includes a seal receiving portion and a seal support axially spaced from the seal receiving portion. A seal is positioned about the gear support at the seal receiving portion. A sleeve is arranged on the outer surface of the gear support between the wall and the seal and a pump drive gear is mounted on the gear support and is supported by the sleeve. The pump drive gear includes an outer toothed surface, an inner surface, and a bushing arranged on the inner surface, the bushing extending about the sleeve.

The present disclosure relates a gearbox for power lift gate including a rotating frame (22/22′) arranged in the housing and rotatable relative to the housing, a sun roller (23) and a plurality of planetary gears (24) supported by the rotating frame (22/22′), an inner ring tooth (218) provided in the housing, and the planetary gear (24) being surrounded around the sun roller (23) in the central area. The sun roller (23) includes a first rod (230) with helical teeth which is meshed with a first gear (240) of the planetary gear, and a second rod (232) extending coaxially from the first rod (230). The planetary gear includes a second gear (242) meshed with the inner ring gear (218) of the housing to drive the rotating frame to rotate and revolve synchronously for driving external loads.

The present disclosure relates a gearbox for power lift gate including a rotating frame (22/22′) arranged in the housing and rotatable relative to the housing, a sun roller (23) and a plurality of planetary gears (24) supported by the rotating frame (22/22′), an inner ring tooth (218) provided in the housing, and the planetary gear (24) being surrounded around the sun roller (23) in the central area. The sun roller (23) includes a first rod (230) with helical teeth which is meshed with a first gear (240) of the planetary gear, and a second rod (232) extending coaxially from the first rod (230). The planetary gear includes a second gear (242) meshed with the inner ring gear (218) of the housing to drive the rotating frame to rotate and revolve synchronously for driving external loads.

The present application relates to a planet carrier assembly for a vehicle door closing actuator. The planet carrier assembly comprises a plurality of planetary gears and a planet carrier body. The planet carrier body comprises a disc portion, a cover portion and an output shaft portion, wherein the plurality of planetary gears are rotatably mounted on the disc portion via a corresponding number of mounting shafts fixed to the disc portion, one end of the mounting shaft protruding from a central hole of the planetary gear is pressed into a corresponding receiving hole on the cover portion, and the planet carrier body is further provided with a rotation locking device to prevent the cover portion from rotating circumferentially relative to the disc portion. The planet carrier assembly according to the present application has the advantages such as low cost, high strength, and simple assembly.

The present application relates to a planet carrier assembly for a vehicle door closing actuator. The planet carrier assembly comprises a plurality of planetary gears and a planet carrier body. The planet carrier body comprises a disc portion, a cover portion and an output shaft portion, wherein the plurality of planetary gears are rotatably mounted on the disc portion via a corresponding number of mounting shafts fixed to the disc portion, one end of the mounting shaft protruding from a central hole of the planetary gear is pressed into a corresponding receiving hole on the cover portion, and the planet carrier body is further provided with a rotation locking device to prevent the cover portion from rotating circumferentially relative to the disc portion. The planet carrier assembly according to the present application has the advantages such as low cost, high strength, and simple assembly.

A balanced speed reducer of a dual-ring gear variable-line-speed planetary row includes a dual-ring gear variable-line-speed planetary row, an input end (6), an output end (7), a locking end (8), and auxiliary devices such as bearings. The dual-ring gear planetary row includes a left ring gear (1), a right ring gear (2), and a planet carrier (3). A left planetary gear (4) and a right planetary gear (5) that are connected on each planetary gear shaft have the same rotation speed. The left planetary gear (4) meshes with the left ring gear (1), and the right planetary gear (5) meshes with the right ring gear (2). The number of gear sets is not less than two. A teeth number combination and a number of gear sets are set according to a range specifying parameter and following a principle of matching the teeth number combination with the number of gear sets. A rule for manufacturing and assembling planetary gears is executed. A regulation on gear reference circle radii is executed. By connecting the planetary carrier (3) to the input end (6), connecting one ring gear to the output end (7), and connecting the other ring gear to the locking end (8), a speed reducer that has a corresponding left transmission ratio and right transmission ratio, can be actually assembled and provides balanced operation is formed.

In a series of reduction gears including a parallel shaft reduction gear and an orthogonal shaft reduction gear, the parallel shaft reduction gear includes a motor, a parallel shaft reducer, and a first joint unit, and the first joint unit includes a first joint casing which is connected to a motor casing and a parallel shaft reducer casing, and a joint shaft which is connected to a motor shaft and the input shaft of the parallel shaft reducer. The orthogonal shaft reduction gear includes the motor and the parallel shaft reducer which are used in common with the parallel shaft reduction gear, a second joint unit in which a portion or all portions are used in common with the first joint unit, and an orthogonal reducer, and the motor, the second joint unit, the orthogonal reducer, and the parallel shaft reducer are connected to one another in this order.

A device for the installation of rock bolts includes a supporting structure and first and second bolting units mounted to the supporting structure. Each bolting unit is configured for drilling an installation hole and/or for installing a rock bolt into a rock face, wherein the supporting structure is configured for rotatably moving the first and second bolting units about a common axis of rotation. At least one actuator is mounted to the supporting structure and configured for additionally moving at least one of the first and second bolting units.