Search

CN-113525073-B - Shaft driver

CN113525073BCN 113525073 BCN113525073 BCN 113525073BCN-113525073-B

Abstract

A shaft drive for a vehicle, the vehicle having at least one drivable axle, the shaft drive comprising a drive shaft which extends in a longitudinal direction of the vehicle from a first side of the shaft drive to a second side of the shaft drive, the drive shaft being configured for receiving drive power of a motor arranged on the first side of the shaft drive and outputting it on the second side of the shaft drive to a driven shaft which extends on the second side of the shaft drive offset relative to the drive shaft, and the driven shaft being configured for outputting the drive power to the axle via a bevel gear which points in the direction of the first side. The axle drive further comprises a brake, in particular a parking brake, having a brake disk which is arranged on the second side of the axle drive, away from the first side, on the drive shaft or the driven shaft.

Inventors

  • BITTLINGMAYER GERD

Assignees

  • 凯斯勒公司

Dates

Publication Date
20260512
Application Date
20210401
Priority Date
20200401

Claims (20)

  1. 1. A shaft drive (11) for a vehicle having at least one drivable axle (13) oriented transversely to the longitudinal direction (L) of the vehicle, comprising -A drive shaft (15) extending from a first side (17) of the shaft drive (11) in a longitudinal direction (L) of the vehicle via the axle (13) to a second side (19) of the shaft drive (11), wherein the drive shaft (15) is configured to receive, on an input section (21), a drive power of an electric motor (23) arranged on the first side (17) of the shaft drive (11) and to output, on the second side (19) of the shaft drive (11), the drive power via an output section (25); -a driven shaft (27) extending between a first end (29) of the driven shaft (27) and a second end (31) of the driven shaft (27) opposite thereto, in a manner offset relative to the drive shaft (15) on a second side (19) of the shaft drive (11), parallel to the longitudinal direction (L) of the vehicle, wherein the first end of the driven shaft (27) points in the direction of the first side (17) of the shaft drive (11), and wherein the driven shaft (27) is configured for receiving the drive power of an output section (25) of the drive shaft (15) on an input section (30) of the driven shaft (27) and outputting the drive power to the axle (13) via a bevel gear (33) arranged on the first end (29) of the driven shaft (27), and -A brake (35) having a brake disc (37) which is rotatable axially parallel to the longitudinal direction (L) and which is arranged on the second side (19) of the shaft drive (11) pointing away from the first side (17) of the shaft drive (11) on the drive shaft (15) or the driven shaft (27), wherein the shaft drive (11) is configured for installation in a vehicle such that the drive shaft (15) is arranged vertically offset relative to the driven shaft (27) and transversely to the axle (13).
  2. 2. The shaft driver (11) according to claim 1, wherein the shaft driver (11) further comprises an electric motor (23).
  3. 3. The shaft drive (11) according to claim 1 or 2, wherein the output section (25) of the drive shaft (15) and/or the input section (30) of the driven shaft (27) is arranged in the longitudinal direction (L) between the first end (29) of the driven shaft (27) and the brake disc (37).
  4. 4. The shaft drive (11) according to claim 1, wherein the output section (25) of the drive shaft (15) and the input section (30) of the driven shaft (27) are coupled to each other in the driven state such that a reduction in the drive power is carried out when the drive power is transmitted from the drive shaft (15) to the driven shaft (27).
  5. 5. The shaft drive (11) according to claim 1, wherein the output section (25) of the drive shaft (15) and the input section (30) of the driven shaft (27) are coupled to one another in the drive state by means of at least one spur gear stage (39).
  6. 6. The shaft drive (11) according to claim 1, wherein the brake disc (37) is arranged on the second end (31) of the driven shaft (27).
  7. 7. The shaft drive (11) according to claim 6, wherein the second end of the driven shaft (27) protrudes axially beyond the drive shaft (15) in the longitudinal direction (L) of the vehicle, wherein the brake disc (37) extends radially at least to be flush with the drive shaft (15).
  8. 8. The shaft drive (11) according to claim 1, wherein the drive shaft (15) extends in the longitudinal direction (L) of the vehicle between a first end (26) and a second end (28) opposite thereto, wherein the first end (26) of the drive shaft (15) points in the direction of the first side (17) of the shaft drive (11), wherein the brake disc (37) is arranged on the second end (28) of the drive shaft (15).
  9. 9. The shaft drive (11) according to claim 1, wherein the drive shaft (15) comprises at least one first sub-shaft (41) and at least one second sub-shaft (43) coaxial with the first sub-shaft, the first and second sub-shafts being drivingly and operatively coupled by a reduction gear (45) arranged therebetween.
  10. 10. The shaft drive (11) according to claim 1, wherein the shaft drive (11) comprises a housing (55), the drive shaft (15) and the driven shaft (27) being accommodated within the housing (55), wherein the output section (25) of the drive shaft (15) and the input section (30) of the driven shaft (27) are arranged inside the housing (55).
  11. 11. The shaft drive (11) according to claim 10, wherein the interior space (57) of the housing (55) defines a common oil chamber (59) for the drive shaft (15) and the driven shaft (27).
  12. 12. The shaft driver (11) as claimed in claim 11, wherein the shaft driver (11) is configured such that the common oil chamber (59) communicates with a shaft chamber (61) in which a disk gear (63) that meshes with the bevel gear (33) is arranged.
  13. 13. Shaft drive (11) according to one of claims 10 to 12, wherein the housing (55) has an integrally formed bearing section (65) on which a bearing (67) for supporting the drive shaft (15) and/or the driven shaft (27) is supported, and wherein the housing (55) has a shaft housing section (69) connected to the bearing section (65), into which the bevel gear (33) protrudes and/or into which a disk gear (63) which meshes with the bevel gear (33) is accommodated.
  14. 14. The shaft drive (11) according to claim 13, wherein the output section (25) of the drive shaft (15) and the input section (30) of the driven shaft (27) are arranged inside the bearing section (65).
  15. 15. The shaft drive (11) according to claim 13, wherein the input section (21) of the drive shaft (15) is arranged in the shaft chamber housing section (69) or on the shaft chamber housing section (69).
  16. 16. The shaft drive (11) of claim 13 wherein the drive shaft (15) traverses the shaft chamber housing section (69).
  17. 17. The shaft drive (11) according to claim 13, wherein at least one bearing (67) for supporting the drive shaft (15) is supported on the shaft chamber housing section (69).
  18. 18. The shaft drive (11) according to claim 13, wherein the housing (55) has a connecting section (71) for fixing the motor (23).
  19. 19. The axle drive (11) according to claim 1, wherein the axle drive (11) further comprises a differential (73) for distributing at least a respective portion of the drive power to two half shafts (75, 77) of the axle (13), and wherein the disk gear (63) is coupled in a rotationally fixed manner to the differential (73).
  20. 20. The shaft drive (11) according to claim 10, wherein the brake disc (37) is arranged outside the housing (55).

Description

Shaft driver Technical Field The invention relates to a shaft drive for a vehicle having at least one drivable axle oriented transversely to the longitudinal direction of the vehicle. Background Such a shaft drive can be designed to direct the drive power generated by the motor, in particular the electric motor, onto the axle in order to be able to drive the axle and to move the vehicle. The axle drive can be arranged in particular on the underside of the vehicle in the region of the axle. In addition to the transmission of drive power, it may also be necessary to equip the vehicle with a parking brake function in order to ensure a reliable stopping of the vehicle and to ensure that the vehicle does not slip away. In particular in the case of trucks, such as trucks, transport vehicles or dump trucks, a brake with a parking brake function can be provided for reliably holding the vehicle during loading. In this case, such a brake must be able to exert a correspondingly high braking effect due to the high loads which occur, in particular, when loading in relatively steep terrain. In most cases, therefore, the parking brake function cannot be realized by the service brake, just in so-called trucks, but an additional brake is required. In principle, it is conceivable for the brake to be arranged on the axle drive of the vehicle in order to prevent the axle from rotating by locking the axle drive when the vehicle is parked. Such a brake may perform an emergency braking function in addition to the usual service brakes of the vehicle, which emergency braking function may be automatically shut off, for example, when the service pressure drops. However, a problem that arises when mounting the brake on the axle drive is that the installation space in the region of the axle is very limited and usually at least a large part of the components of the axle drive is used for transmitting the drive power. The design of the shaft drive with the brake is more difficult, in particular when an electric motor is used which can be connected directly to the shaft drive and thus also occupies part of the installation space in the relevant region. Furthermore, such brakes often may comprise a brake disc which, in particular when using a loaded or to be loaded truck, must have a relatively large diameter in order to be able to perform a sufficient braking function for holding the vehicle. However, such large brake disks, in view of the limited installation space, can prevent the shaft drive from being designed with a brake. But the parking brake function must be required for some applications or in some vehicles. Disclosure of Invention The object of the present invention is therefore to provide a shaft drive with a brake, in particular for holding a vehicle while in a parking position, which has a construction that is as compact as possible. The object is achieved according to the invention by a shaft drive for a vehicle having at least one drivable axle oriented transversely to the longitudinal direction of the vehicle. The axle drive comprises a drive shaft which extends in the longitudinal direction of the vehicle from a first side of the axle drive through the axle to a second side of the axle drive, wherein the drive shaft is designed to receive the drive power of an electric motor arranged on the first side of the axle drive at an input section and to output the drive power via an output section at the second side of the axle drive, and further comprises a driven shaft which is offset relative to the drive shaft at the second side of the axle drive, extends parallel to the longitudinal direction of the vehicle between a first end and a second end opposite thereto, wherein the first end of the driven shaft is oriented in the direction of the first side of the axle drive, and wherein the driven shaft is designed to receive the drive power of an output section of the drive shaft at the input section and to output the drive power to the axle via a bevel gear arranged on the first end, and further comprises a brake disk which is rotatable parallel to the longitudinal direction and is oriented away from the first side of the axle drive shaft at the second side of the axle drive. The drive shaft and the driven shaft extend in the longitudinal direction of the vehicle, whereby firstly the extent of the shaft drive in this direction can also be concentrated. Furthermore, the electric motor may be connected to the shaft drive on a first side thereof for transmitting drive power to the input section of the drive shaft, while the brake disc is arranged on a second side of the shaft drive and is arranged pointing away from the first side of the shaft drive. The motor and the brake disk are thus arranged on opposite sides of the shaft drive, so that the components of the additional components of the shaft drive and the structural space required for these components can be distributed to a certain extent over both sides of the shaft drive. Th