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Heavy duty vehicle R-type electric power steering device

A technology of electric power steering and heavy-duty vehicles, which is applied in the direction of electric steering mechanism, steering mechanism, steering rod, etc., can solve the problems of insufficient electronically controlled hydraulic power steering, complicated electric power steering results, and low power steering efficiency. Compactness, reliable steering, and improved transmission efficiency

Pending Publication Date: 2018-05-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the defects of low transmission efficiency of the existing power steering, complex electric power steering results, small power-assisted torque that cannot be used in large commercial vehicles, and insufficient electronically controlled hydraulic power steering in large trucks and buses. , proposed an R-type electric power steering device for heavy-duty vehicles, which has compact structure, high transmission efficiency, reliable steering, and is suitable for large commercial vehicles

Method used

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  • Heavy duty vehicle R-type electric power steering device
  • Heavy duty vehicle R-type electric power steering device

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0027] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0028] Such as figure 1 , figure 2 As shown, the present invention discloses an R-type electric power steering device for heavy-duty vehicles, including a steering wheel 1, a steering wheel sensor 2, a steering column 3, an electronic control unit ECU 4, a left steering knuckle 6, a left trapezoidal arm 7, and a left tie rod 8 , Steering gear pinion 9, steering gear rack 10, electronically controlled booster mechanism 11, right tie rod 15, right trapezoidal arm 16, right steering kn...

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Abstract

The invention discloses a heavy duty vehicle R-type electric power steering device which comprises an ECU (electronic control unit), a steering wheel sensor, a steering column, a gear / rack steering gear and an electric power mechanism. The ECU of the device acquires corner / torque signals of a steering wheel and vehicle speed signals, current outputted to a sleeve motor is calculated, rotation of the sleeve motor is subjected to deceleration and torque increase by a planetary roller screw mechanism and then transformed into translational motion of a screw, namely, one part of force of a rack ofthe steering gear and a tie rod is from the force moment of the steering wheel turned by a driver and inputted by the steering column and the gear / rack steering gear, another part of the force is from the torque of the sleeve motor and inputted by the planetary roller screw mechanism, and the two parts jointly realize the steering intention of the driver. The heavy duty vehicle R-type electric power steering device is compact in structure, reliable in work, high in efficiency, stable in steering and suitable for power-assisted steering work of a motor bus under the condition of heavy load.

Description

technical field [0001] The invention relates to the technical field of automobile power steering, especially electric power steering, in particular to an R-type electric power steering device for heavy vehicles. Background technique [0002] The traditional hydraulic power steering system (HPS) uses the engine to drive the steering oil pump, which has the phenomenon of insufficient power assistance at low speeds and fluttering steering at high speeds, and because part of the power of the engine is consumed regardless of steering or non-steering, there are risks of parasitic loss and fluid leakage . [0003] At present, there have been many researches on the power steering technology of heavy vehicles. Among them, a heavy vehicle electromagnetic clutch steering power control system (Patent No. CN205059722U) designed by Jiangsu University solves the problem that the low speed steering system has too little power to cause the driver to turn hard, and the high speed steering sys...

Claims

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Application Information

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IPC IPC(8): B62D5/04B62D7/20B62D3/12
CPCB62D3/12B62D5/04B62D7/20
Inventor 金智林梁为何李静轩赵万忠
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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