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CN-122008729-A - Connection structure and transmission system of drive shaft and wheel hub

CN122008729ACN 122008729 ACN122008729 ACN 122008729ACN-122008729-A

Abstract

The invention discloses a connecting structure and a transmission system of a driving shaft and a hub, and relates to the field of automobile manufacturing, comprising a driving shaft sleeve, a driving shaft sleeve and a driving shaft, wherein the driving shaft sleeve is internally provided with a through hole, and one end of the driving shaft sleeve is provided with a limiting groove; the driving shaft is arranged in the through hole in the driving shaft sleeve in a penetrating mode, a limiting step is arranged at the position, matched with the limiting groove, of the driving shaft, the supporting bearing is sleeved on the limiting step, the supporting bearing is further arranged in the limiting groove, the limiting assembly is connected with one end, far away from the limiting step, of the driving shaft and the hub, and the limiting assembly is matched with the supporting bearing to limit axial and radial deflection of the driving shaft. According to the invention, the support bearing and the limiting assembly connected with the driving shaft and the hub are arranged, so that the axial and radial deflection of the driving shaft relative to the hub and the driving shaft sleeve is limited, and the phenomenon that the driving shaft impacts the spline on the hub due to the axial and radial deflection when the transmission torque is suddenly changed is avoided, and friction abnormal sound is generated.

Inventors

  • JIANG HUAN
  • DUAN RENMIN
  • YIN SIWEI
  • BAI QINGHUI
  • CHANG ZONGFANG
  • FENG RONGJUN
  • WANG QINGWU
  • WANG BO

Assignees

  • 东风汽车股份有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. A connection structure of a drive shaft and a hub, comprising: a driving shaft sleeve (50) which is internally provided with a through hole and one end of which is provided with a limit groove (51); a hub (20) which is in external revolving connection with the other end of the driving shaft sleeve (50); The driving shaft (10) is arranged in the through hole in the driving shaft sleeve (50) in a penetrating mode, and a limiting step (12) is arranged at the matching position of the driving shaft (10) and the limiting groove (51); The support bearing (40) is sleeved on the limit step (12), and the support bearing (40) is also arranged in the limit groove (51); And the limiting assembly (30) is connected with one end, far away from the limiting step (12), of the driving shaft (10) and the hub (20), and the limiting assembly (30) is matched with the supporting bearing (40) to limit the driving shaft (10) from axial and radial deflection.
  2. 2. A connection structure of a drive shaft and a hub according to claim 1, wherein: A first locking hole (11) is formed in the connecting side of the driving shaft (10) and the limiting assembly (30); The limit assembly (30) comprises: The middle part of the end cover (31) is provided with a first through hole (312), and the end cover (31) is fixedly connected with the hub (20); And a connecting bolt (33) which passes through the first through hole (312) and then is connected with the first locking hole (11).
  3. 3. A connection of a drive shaft to a hub according to claim 2, wherein the limit assembly (30) further comprises: And a center seat ring (32) sleeved between the first through hole (312) and the connecting bolt (33).
  4. 4. A connection of a drive shaft to a hub according to claim 3, wherein the central race (32) comprises: The seat ring body (322) is provided with a through second through hole (323) in the middle, and the seat ring body (322) is sleeved inside the first through hole (312); And a limiting part (321) arranged on one side of the seat ring body (322), wherein the limiting part (321) is abutted with the end cover (31).
  5. 5. The connection structure of a drive shaft and a hub according to claim 4, wherein: the seat body (322) has a thickness greater than the end cap (31).
  6. 6. A connection structure of a drive shaft and a hub according to claim 2, comprising: A locking bolt (34); The end cover (31) is provided with a second locking hole (311), and the locking bolt (34) passes through the second locking hole (311) and then is connected with the hub (20).
  7. 7. A connection structure of a drive shaft and a hub according to claim 2, characterized in that the connecting bolt (33) comprises: A bolt head (331) having an outer diameter larger than an inner diameter of the first through hole (312); One end of the screw rod (332) is connected with the bolt head (331), and the other end of the screw rod passes through the first through hole (312) and is then in threaded connection with the first locking hole (11).
  8. 8. A connection structure of a drive shaft and a hub according to claim 1, comprising: and a bearing (60) provided between the hub (20) and the hub (20) through a driving sleeve (50).
  9. 9. A connection structure of a drive shaft and a hub according to claim 1, wherein: the driving shaft (10) is connected with the hub (20) through involute splines.
  10. 10. A transmission system comprising a drive shaft and hub connection according to any one of claims 1 to 9.

Description

Connection structure and transmission system of drive shaft and wheel hub Technical Field The invention relates to the field of automobile manufacturing, in particular to a connecting structure of a driving shaft and a hub and a transmission system. Background During driving of a vehicle, the drive shaft is responsible for transmitting rotational speed and torque from a powertrain, such as an engine or motor, to the wheels to drive the wheels forward. In the prior art, the drive shaft passes through the wheel hub assembly and is splined thereto, and the hub ends are typically secured by a lock nut to form the assembly of the drive shaft and the wheel hub assembly. However, gaps exist between the driving shaft and the hub through spline connection and assembly, and when the transmission torque is suddenly changed, the driving shaft can impact the spline on the hub due to axial and radial deflection, so that abnormal friction noise is caused. Disclosure of Invention The invention provides a connecting structure of a driving shaft and a hub and a transmission system, which can solve the problem that when transmission torque is suddenly changed, the driving shaft can impact a spline on the hub due to axial and radial offset, so that abnormal friction noise is caused. In a first aspect, an embodiment of the present invention provides a connection structure of a drive shaft and a hub, including: The shaft sleeve is driven to rotate by the driving shaft, the inside of the container is provided with a through hole one end is provided with a limit groove; The hub is in external turnover connection with the other end of the driving shaft sleeve; The driving shaft penetrates through the through hole in the driving shaft sleeve, and a limit step is arranged at the matching position of the driving shaft and the limit groove; the support bearing is sleeved on the limit step and is also arranged in the limit groove; and the limiting assembly is connected with one end, far away from the limiting step, of the driving shaft and the hub, and is matched with the support bearing to limit the driving shaft to axially and radially deviate. With reference to the first aspect, in one embodiment, a first locking hole is formed on a connection side of the driving shaft and the limiting assembly; the spacing subassembly includes: the middle part of the end cover is provided with a first through hole, and the end cover is fixedly connected with the hub; and the connecting bolt penetrates through the first through hole and then is connected with the first locking hole. With reference to the first aspect, in an embodiment, the limiting assembly further includes: and the central seat ring is sleeved between the first through hole and the connecting bolt. With reference to the first aspect, in one embodiment, the center race includes: The seat ring body is provided with a through second through hole in the middle, and the seat ring body is sleeved inside the first through hole; and the limiting part is arranged on one side of the seat ring body and is abutted with the end cover. With reference to the first aspect, in one embodiment, the thickness of the seat ring body is greater than the thickness of the end cap. With reference to the first aspect, in one embodiment, the method includes: A locking bolt; The end cover is provided with a second locking hole, and the locking bolt penetrates through the second locking hole and then is connected with the hub. With reference to the first aspect, in one embodiment, the connecting bolt includes: a bolt head having an outer diameter larger than an inner diameter of the first through hole; one end of the screw rod is connected with the bolt head, and the other end of the screw rod passes through the first through hole and is then in threaded connection with the first locking hole. With reference to the first aspect, in one embodiment, the method includes: and the bearing is arranged between the hub and the hub through the driving shaft sleeve. With reference to the first aspect, in one embodiment, an involute spline coupling is employed between the drive shaft and the hub. In a second aspect, an embodiment of the present invention provides a transmission system, including the connection structure between the driving shaft and the hub. The technical scheme provided by the embodiment of the invention has the beneficial effects that: The invention discloses a connecting structure and a transmission system of a driving shaft and a hub, wherein the connecting structure of the driving shaft and the hub comprises a driving shaft sleeve, the driving shaft sleeve is internally provided with a through hole, one end of the driving shaft sleeve is provided with a limiting groove, the hub is in external turnover connection with the other end of the driving shaft sleeve, the driving shaft is arranged in the through hole in the driving shaft sleeve in a penetrating mode, a limiting step is arranged at the matching