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Commercial vehicle electric hydraulic power steering device and use method

A technology of hydraulic power steering and electric steering, which is applied in the direction of power steering mechanism, steering mechanism, fluid steering mechanism, etc., which can solve the problems of poor steering control effect and unsuitability for electric commercial vehicles, etc., to reduce power consumption, enhance portability, Controllable Effects

Active Publication Date: 2018-05-15
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects and problems existing in the prior art that it is not suitable for electric commercial vehicles and the steering control effect is poor, and to provide an electrohydraulic power steering for commercial vehicles that is suitable for electric commercial vehicles and has good steering control effect Device and method of use

Method used

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  • Commercial vehicle electric hydraulic power steering device and use method
  • Commercial vehicle electric hydraulic power steering device and use method
  • Commercial vehicle electric hydraulic power steering device and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] see Figure 1 to Figure 6 , an electrohydraulic power steering device for a commercial vehicle, comprising a steering oil tank 4, a steering gear 5, an electric steering pump 6 and a controller 7; The oil inlet of the electric steering pump 6 communicates with the oil inlet of the steering gear 5 through the high-pressure pipeline 61, and the oil outlet of the steering gear 5 communicates with the oil inlet of the steering oil tank 4 through the low-pressure pipeline 51 communicated, and the electric steering pump 6 is electrically connected to the controller 7 via the control circuit 71 . Preferably, the electric steering pump 6 includes a motor 62 and a mechanical pump 63, the motor 62 is connected with the mechanical pump 63 through a flexible coupling, the steering oil tank 4 communicates with the mechanical oil inlet 631 of the mechanical pump 63 through the oil inlet pipeline 41, and the mechanical pump The mechanical oil outlet 632 of 63 communicates with the st...

Embodiment 2

[0058] Basic content is the same as embodiment 1, the difference is:

[0059] The control of the controller 7 through the control circuit 71 includes any one or a combination of the following two processes:

[0060] The first process: the CAN bus 8 of the whole vehicle determines whether the controller 7 works and the voltage and frequency output by the controller 7 through the CAN bus connection line 81, so as to adjust the working time and the rotating speed of the electric steering pump 6;

[0061] The second process: the vehicle power battery 9 inputs high-voltage direct current to the controller 7 through the high-voltage connection line 91, the high-voltage direct current is converted into alternating current through the controller 7, and the controller 7 then inputs alternating current to the electric steering pump 6 through the control line 71 to drive The electric steering pump 6 works, the frequency of the alternating current determines the rotation speed of the moto...

Embodiment 3

[0063] Basic content is the same as embodiment 1, the difference is:

[0064] The input end of the controller 7 is connected with the vehicle CAN bus 8 through the CAN bus connection line 81, and the input end of the controller 7 is connected with the vehicle power battery 9 through the high voltage connection line 91. The controller 7 The output end of the control circuit 71 is electrically connected to the electric steering pump 6 . The high-voltage connection line 91 outputs direct current to the controller 7 , and the control line 71 outputs alternating current to the electric steering pump 6 .

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PUM

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Abstract

The invention provides a commercial vehicle electric hydraulic power steering device. The device comprises a steering oil tank, a steering engine, an electric steering pump and a controller; the steering oil tank is communicated with an oil inlet of the electric steering pump through an oil inlet pipeline, an oil outlet of the electric steering pump is communicated with an oil inlet of the steering engine through a high pressure pipeline, an oil outlet of the steering engine is communicated with the steering oil tank through a low pressure pipeline, the electric steering pump is electrically connected with the controller through a control circuit, and the controller is connected with a full vehicle CAN bus and the controller through a CAN bus connecting circuit and a high voltage connecting circuit respectively. Accordingly, the device is suitable for electric commercial vehicles, the steering control effect is good, the controllability is high, the installation space is large, an electric hydraulic power steering pipeline is applicable to the electric commercial vehicle, vibration can be effectively avoided, and the cooling effect is good.

Description

technical field [0001] The invention relates to a hydraulic steering system for a vehicle, in particular to an electrohydraulic power steering device for a commercial vehicle and a method for using it, which is specifically applicable to an electric commercial vehicle and can enhance the effect of steering manipulation. Background technique [0002] At present, the demand for electric commercial vehicles in the automobile market is increasing, especially electric trucks. However, because the steering system of electric trucks is different from that of conventional engine trucks, electric trucks do not have steering pumps with engines and lose hydraulic power sources, so they can only It is considered to configure a new power source to provide the hydraulic power required for steering. Therefore, it is urgent to improve the existing hydraulic steering system of commercial vehicles to be suitable for electric commercial vehicles. [0003] The authorized announcement number is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06B62D21/02B62D21/00
CPCB62D5/062B62D5/064B62D21/00B62D21/02
Inventor 杨小见宁忠翼杨胜李春东
Owner DONGFENG COMML VEHICLE CO LTD
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