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CN-122009370-A - Electric power steering device of unmanned motorcycle and assembly method thereof

CN122009370ACN 122009370 ACN122009370 ACN 122009370ACN-122009370-A

Abstract

The invention provides an electric power steering device of an unmanned motorcycle, which comprises a vehicle head frame unit, a steering unit and a steering handle unit, wherein the steering unit is arranged on the vehicle head frame unit and is connected with the steering handle unit, an electric steering module is arranged between the steering unit and the steering handle unit, the output torque of the electric steering module is large, the electric power steering module effectively drives the motorcycle to steer, the driving comfort level can be improved when the electric power steering device is switched to a manual driving state, and the unmanned motorcycle can be driven according to the instruction action of a whole vehicle driving controller in an unmanned mode.

Inventors

  • WANG BAIJIE

Assignees

  • 奇瑞商用车（安徽）有限公司

Dates

Publication Date
20260512
Application Date
20260305

Claims (10)

  1. 1. The electric power steering device of the unmanned motorcycle is characterized by comprising a head frame unit (10), a steering unit (20) and a steering handle unit (30), wherein the steering unit (20) is arranged on the head frame unit (10) and is connected with the steering handle unit (30), and an electric steering module (40) is arranged between the steering unit (20) and the steering handle unit (30).
  2. 2. The steering device according to claim 1, wherein the head frame unit (10) includes a head pipe (11), a frame pipe beam (12), and a mounting bracket (13), the frame pipe beam (12) and the head pipe (11) being connected, the mounting bracket (13) being provided on the head pipe (11) and the frame pipe beam (12).
  3. 3. The steering unit (20) of the electric power steering device of the unmanned motorcycle according to claim 2, wherein the steering unit (20) includes a steering shaft (21), a lower yoke plate (22) and an upper yoke plate (23), the steering shaft (21) is movably penetrated in the head pipe (11), one end of the steering shaft (21) is connected with the lower yoke plate (22), and the other end of the steering shaft (21) is connected with the upper yoke plate (23).
  4. 4. An electric power steering device for an unmanned motorcycle according to claim 3, wherein the steering shaft (21) is provided with a first journal (211) and a second journal (212), the first journal (211) and the second journal (212) are respectively provided at both ends of the steering shaft (21), the steering unit (20) further comprises a pressure bearing (24), and the pressure bearing (24) is sleeved on the first journal (211) and the second journal (212) and is positioned in the head pipe (11).
  5. 5. The steering unit (20) of claim 4, further comprising a spacer (25), a lower lock nut (26) and an upper lock nut (27), wherein the spacer (25) is sleeved on the steering shaft (21), the lower lock nut (26) is rotatably provided on the steering shaft (21), the upper lock nut (27) is rotatably provided on the steering shaft (21), and the lower lock nut (26) and the upper lock nut (27) are respectively positioned on both sides of the upper link plate (23).
  6. 6. The steering device according to claim 5, wherein the electric power steering module (40) includes a bottom plate (41), a suspension bracket (42), a gear box (43), and a power assist motor (44), the bottom plate (41) is provided on the mounting bracket (13), the suspension bracket (42) is provided on the bottom plate (41), the gear box (43) is provided on the suspension bracket (42), and the power assist motor (44) is provided on the suspension bracket (42) and is connected to the gear box (43).
  7. 7. The steering device of an unmanned motorcycle according to claim 6, wherein a worm (432) connected to a worm wheel (431) is provided in the gear box (43), the electric steering module (40) further comprises an input shaft (45) and an output shaft (46) connected to the input shaft (45), the input shaft (45) and the output shaft (46) are connected by a torsion bar (47), the torsion bar (47) is provided on the worm wheel (431) in a penetrating manner, and the output shaft (46) is connected to the steering shaft (21).
  8. 8. The electric power steering apparatus of an unmanned motorcycle according to claim 7, wherein the electric power steering module (40) further comprises a controller (48) and a torque angle sensor (49) connected to the controller (48), the controller (48) is provided on the base plate (41) and connected to the power assist motor (44), the torque angle sensor (49) is provided in the gear box (43), and rotation parts of the torque angle sensor (49) are respectively connected to the input shaft (45) and the output shaft (46).
  9. 9. The steering handle unit (30) of claim 7, wherein the steering handle unit (30) comprises a steering handle (31) and a hoop (32) provided on the steering handle (31), the hoop (32) being connected to the input shaft (45).
  10. 10. An assembling method of the electric power steering device of the unmanned motorcycle according to any one of claims 1 to 9, comprising the following steps of S1, preassembling a headstock frame unit (10), S2, assembling a steering unit (20), S3, integrating an electric steering module (40), S4, abutting the electric steering module (40) with the steering unit (20), S5, abutting the steering handle unit (30), and S6, detecting and debugging after assembling.

Description

Electric power steering device of unmanned motorcycle and assembly method thereof Technical Field The invention belongs to the technical field of motorcycles, and particularly relates to an electric power steering device of an unmanned motorcycle and an assembly method thereof. Background With the increasing application of unmanned technology to ground vehicles, two-wheel and right-side three-wheel electric motorcycles have the advantages of portability, flexibility, low cost, easy parking and the like, can be used as unmanned or intelligent auxiliary cruising vehicles, can be used for collecting data in article transportation, mobile media, adverse conditions or dangerous environments and the like, and are applied to certain fields at present, but lack of corresponding systems of the motorcycles, in particular lack of electric power steering systems of the motorcycles. In the related art, a control module drives a multi-stage gear reduction mechanism to drive a steering shaft to steer by controlling a servo motor, the mechanism is relatively large in size, the gear transmission ratio is limited by arrangement space, steering output torque is limited, a gear position sensor only outputs a gear corner signal and does not output a steering torque signal, driving handfeel is not easy to ensure in a manual driving mode, a steering bearing clearance self-adaptive device is absent, after the abrasion clearance of a steering bearing is increased, the coaxiality of the steering shaft and a shaft tube is poor, the clearance of the multi-stage gear mechanism is increased, and steering action precision is not easy to ensure. Therefore, in order to improve or solve at least one of the problems, an electric power steering device for an unmanned motorcycle, which has high structural integration, large output torque, and can effectively drive the motorcycle to steer, can improve driving comfort when switching to a manual driving state, and can realize unmanned operation according to the instruction action of a whole vehicle driving controller in an unmanned mode, and an assembling method thereof are provided. Disclosure of Invention The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric power steering apparatus for an unmanned motorcycle, which has a high structural integration level and a large output torque, can effectively drive the steering of the motorcycle, can improve driving comfort when switching to a manual driving state, and can realize unmanned driving according to the command action of a vehicle driving controller in an unmanned driving mode, and an assembling method thereof, and to achieve the above objects, the present invention adopts the following technical scheme: The invention provides an electric power steering device of an unmanned motorcycle, which is characterized by comprising a vehicle head frame unit, a steering unit and a steering handle unit, wherein the steering unit is arranged on the vehicle head frame unit and is connected with the steering handle unit, and an electric steering module is arranged between the steering unit and the steering handle unit. In the electric power steering device for the unmanned motorcycle provided by the invention, the steering head and frame unit can also have the characteristics that the steering head and frame unit comprises a steering head pipe, a steering frame pipe beam and a mounting bracket, wherein the steering frame pipe beam is connected with the steering head pipe, and the mounting bracket is arranged on the steering head pipe and the steering frame pipe beam. The electric power steering device for the unmanned motorcycle can be characterized in that the steering unit comprises a steering shaft, a lower yoke plate and an upper yoke plate, wherein the steering shaft is movably arranged in the head tube in a penetrating way, one end of the steering shaft is connected with the lower yoke plate, and the other end of the steering shaft is connected with the upper yoke plate. The electric power steering device of the unmanned motorcycle provided by the invention can be further characterized in that a first journal and a second journal are arranged on the steering shaft, the first journal and the second journal are respectively arranged at two ends of the steering shaft, the steering unit further comprises a pressure bearing, and the pressure bearing is sleeved on the first journal and the second journal and is positioned in the headstock tube. The electric power steering device of the unmanned motorcycle can also have the characteristics that the steering unit further comprises a gasket, a lower lock nut and an upper lock nut, wherein the gasket is sleeved on the steering shaft, the lower lock nut is rotatably arranged on the steering shaft, the upper lock nut is rotatably arranged on the steering shaft, and the lower lock nut and the upper lock nut are respectively positioned on two