A drive train unit (HY, G) for a motor vehicle includes a first shaft (TW), a second shaft (PW), and a third shaft (AN). The first shaft (TW) is rotatably mounted at an inner diameter of the second shaft (PW) with a first bearing (L1). The second shaft (PW) is rotatably mounted at an inner diameter of the third shaft (AN) with a second bearing (L2, L2x). A lube oil feed to the first bearing (L1) and the second bearing (L2, L2x) takes place through a bore hole (B1) arranged in the first shaft (TW). An oil baffle chamber (S) is formed at an inner surface of the second shaft (PW) and includes a first outflow (S1) and a second outflow (S2). A drive train for a motor vehicle may include such a drive train unit (HY, G).

A drive train unit (HY, G) for a motor vehicle includes a first shaft (TW), a second shaft (PW), and a third shaft (AN). The first shaft (TW) is rotatably mounted at an inner diameter of the second shaft (PW) with a first bearing (L1). The second shaft (PW) is rotatably mounted at an inner diameter of the third shaft (AN) with a second bearing (L2, L2x). A lube oil feed to the first bearing (L1) and the second bearing (L2, L2x) takes place through a bore hole (B1) arranged in the first shaft (TW). An oil baffle chamber (S) is formed at an inner surface of the second shaft (PW) and includes a first outflow (S1) and a second outflow (S2). A drive train for a motor vehicle may include such a drive train unit (HY, G).

A rotary table (1) includes a base body (10), a worm wheel (21), an inner ring (22), a plurality of rolling elements, and a worm screw unit (30). The worm screw unit (32) includes a worm screw (31) and a worm screw housing (32). The worm screw housing (32) has an opposing surface that faces an outer circumferential surface (21B) of the worm wheel (21). The worm screw housing (32) includes a flange portion (325) that protrudes from the opposing surface and covers a side face (215A) that, of the first gear (215) facing the opposing surface, is on the opposite side from the base body (10) in the axial direction of the worm wheel (21).

The continuously variable transmission includes a transmission case having a side cover, a housing, and a case sandwiched between the side cover and the housing, an oil pump disposed in the transmission case, and a pair of gears disposed in the transmission case. An axial rib having a linear shape extending from the side cover toward the housing is formed on an outer wall surface of the case at a position adjacent to the pair of gears. The axial rib is positioned on a straight line extending from the oil pump in the vertical direction and is locally positioned at a position where the meshing reaction force of the pair of gears is suppressed.

The continuously variable transmission includes a transmission case having a side cover, a housing, and a case sandwiched between the side cover and the housing, an oil pump disposed in the transmission case, and a pair of gears disposed in the transmission case. An axial rib having a linear shape extending from the side cover toward the housing is formed on an outer wall surface of the case at a position adjacent to the pair of gears. The axial rib is positioned on a straight line extending from the oil pump in the vertical direction and is locally positioned at a position where the meshing reaction force of the pair of gears is suppressed.

A compact transmission, in particular for use within a single-wheel drive unit, includes a gear carrier fixed to the frame, which has a continuous central recess, and a main transmission having an internally toothed ring gear rotatably mounted on the outside of the gear carrier, externally toothed gears arranged in front of the one of the end faces of the gear carrier and meshing with the ring gear, and an input sun shaft. The compact transmission further includes a transmission pre-stage arranged within the central recess, and a pre-stage input shaft having an externally toothed pre-stage sun wheel, a pre-stage ring gear, and at least one pre-stage intermediate gear meshing with both the pre-stage sun wheel and with the pre-stage ring gear. An additional carrier is fastened to the transmission carrier, via which the pre-stage intermediate gears are held captively in the central recess.

A continuously variable transmission. The continuously variable transmission is provided with an outer housing (1), an inner cavity (2), a first planetary gear set (4), and a second planetary gear set (7). A bucket wheel sun gear (1001) is fixedly provided on a first shaft (3) that penetrates through a first support (5); the bucket wheel sun gear is located at the inner side of the first support; a bucket wheel planetary gear (1002) is provided on the outer circumference of the bucket wheel sun gear; the bucket wheel planetary gear is engaged with the bucket wheel sun gear; the bucket wheel planetary gear and the bucket wheel sun gear constitute a bucket wheel planetary gear set (10); a third support (11) is provided adjacent to the bucket wheel sun gear; a bucket wheel planetary gear shaft (14) is fixedly provided in the middle of the bucket wheel planetary gear; the interior of the bucket wheel planetary gear shaft is a hollow structure; a planetary gear shaft (12) penetrates through the first support, the hollow bucket wheel planetary gear shaft, and the second support; the planetary gear shaft is separately and rotatably connected with the first support and the second support. Provided is a continuously variable transmission having three control ends formed of the outer housing, the first shaft, and a second shaft (6).

A continuously variable transmission. The continuously variable transmission is provided with an outer housing (1), an inner cavity (2), a first planetary gear set (4), and a second planetary gear set (7). A bucket wheel sun gear (1001) is fixedly provided on a first shaft (3) that penetrates through a first support (5); the bucket wheel sun gear is located at the inner side of the first support; a bucket wheel planetary gear (1002) is provided on the outer circumference of the bucket wheel sun gear; the bucket wheel planetary gear is engaged with the bucket wheel sun gear; the bucket wheel planetary gear and the bucket wheel sun gear constitute a bucket wheel planetary gear set (10); a third support (11) is provided adjacent to the bucket wheel sun gear; a bucket wheel planetary gear shaft (14) is fixedly provided in the middle of the bucket wheel planetary gear; the interior of the bucket wheel planetary gear shaft is a hollow structure; a planetary gear shaft (12) penetrates through the first support, the hollow bucket wheel planetary gear shaft, and the second support; the planetary gear shaft is separately and rotatably connected with the first support and the second support. Provided is a continuously variable transmission having three control ends formed of the outer housing, the first shaft, and a second shaft (6).

The present disclosure provides a gearbox of a rail vehicle, which belongs to the technical field of gear transmission. The gearbox of the present disclosure comprises a driving shaft, a driven shaft, a first bearing seat and a second bearing seat; the gearbox further comprises: a first roller bearing, a ball bearing, a bearing inner retaining ring and a bearing outer retaining ring for drainage, which are arranged between the first bearing seat and the driving shaft; wherein, the bearing inner retaining ring and the bearing outer retaining ring are provided between the first roller bearing and the ball bearing along an axial direction of the driving shaft, and a first drainage channel is provided on the bearing outer retaining ring, a second drainage channel is provided on the first bearing seat; wherein, the lubricating oil can be guided into the first roller bearing and the ball bearing from the outside of the first bearing seat through the second drainage channel and the first drainage channel in sequence. The present disclosure can greatly improve the lubricating performance of the first roller bearing and the ball bearing on the driving shaft of the gearbox, and is particularly suitable for low-temperature working conditions.

The present disclosure provides a transmission device for a household electrical appliance, including a drive shaft and an output shaft assembly. The output shaft assembly includes a planetary carrier, a planetary gear train mounted on the planetary carrier, an output shaft and a follower shaft. The planetary gear train includes a sun gear and at least one planetary gear engaged with the sun gear. The planetary carrier is connected to the output shaft. The sun gear is connected to the follower shaft. The planetary carrier is provided with a first bearing and a second bearing that are disposed coaxially with the output shaft. One end of the follower shaft protrudes from the sun gear and is connected to the first bearing. One other end of the follower shaft passes through the second bearing, protrudes from the planetary carrier and is connected to the drive shaft in a clearance fit.