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Double-motor circulating ball type steering system of heavy commercial vehicle

A technology for steering systems and commercial vehicles, which is applied in the field of dual-motor recirculating ball steering systems for heavy-duty commercial vehicles. It can solve the problems of only adjusting the driver's feel, the mismatch of steering resistance torque, and the increase in flow rate affecting the feel, etc., so as to achieve light and flexible steering , Steering of the vehicle is stable, and the effect of meeting the demand for large torque output

Pending Publication Date: 2022-05-10
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional hydraulic power steering has many disadvantages: (1) As the vehicle speed increases, the increase in flow affects the feel
In order to avoid the premature closing of the valve port of the rotary valve caused by the excessive electric power torque coupled to the steering column when the vehicle is running normally, resulting in the phenomenon that the power steering torque is too large and does not match the steering resistance torque, the electro-hydraulic coupling When the steering system is working normally, the output torque of the motor is small, and only the driver's feel can be adjusted

Method used

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  • Double-motor circulating ball type steering system of heavy commercial vehicle
  • Double-motor circulating ball type steering system of heavy commercial vehicle
  • Double-motor circulating ball type steering system of heavy commercial vehicle

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Embodiment Construction

[0019] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

[0020] The dual-motor recirculating ball steering system assembly for a heavy-duty commercial vehicle includes a steering wheel (1), a steering shaft (4), a recirculating ball steering gear, an auxiliary motor (8), a main motor (15) and a control module (3), It is characterized in that: the steering wheel (1) is assembled on the top of the steering shaft (4), a rotation angle sensor (2) is installed on the steering shaft (4), and the bottom end of the steering shaft (4) is connected to the steering shaft through a universal joint. The input shaft (5) of the recirculating ball steering gear is conn...

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Abstract

The invention discloses a double-motor recirculating ball type steering system for a heavy commercial vehicle, which comprises a steering wheel, a steering shaft, a steering angle sensor, an auxiliary motor, an electromagnetic clutch, a worm and gear reducing mechanism, a recirculating ball type steering gear, a torque sensor, a main motor, a planetary gear reducer and a control module, and is characterized in that the steering wheel is assembled at the top end of the steering shaft; the torque sensor is assembled on the steering shaft, the recirculating ball type steering gear input shaft is assembled at the bottom end of the steering shaft, the auxiliary motor is connected with the steering gear input shaft through the worm gear reducer, the steering angle sensor is installed on the steering gear input shaft, and the lower end of a steering screw of the recirculating ball type steering gear is connected with the main motor through the planetary gear reducer. The device has the advantages that a hydraulic pump and an oil tank are omitted, and no complex oil way or oil way accessories need to be assembled; due to the dual-motor design, the fault tolerance of the steering system is improved, and the large-torque output requirement of a heavy commercial vehicle is met; and intelligent driving functions such as electric steering and lane keeping can be realized.

Description

technical field [0001] The invention relates to a dual-motor circulating ball steering system for a heavy-duty commercial vehicle, which belongs to the field of automobile steering gears. Background technique [0002] Currently, recirculating ball hydraulic power steering is mainly used for heavy commercial vehicles. The traditional hydraulic power steering gear has many disadvantages: (1) As the vehicle speed increases, the increase in flow affects the feel. There is a contradiction between high-speed stability and low-speed portability; (2) When the engine is idling, it outputs the rated flow rate. For a constant flow system, the oil pump also works when it is not turning, and the additional fuel consumption is large. [0003] In view of the above shortcomings, the authorized notification number is CN108032902A invention patent discloses an electro-hydraulic power steering device for commercial vehicles and its use method, using the electric steering pump as the hydraulic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D3/08
CPCB62D5/0421B62D5/0442B62D5/043B62D5/046B62D5/0478B62D5/0487B62D3/08
Inventor 汪选要许金鹏
Owner ANHUI UNIV OF SCI & TECH
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