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Automobile pipe column type electric power steering gear torsional fatigue test platform and test method

An electric power steering and torsional fatigue technology, which is used in vehicle testing, vehicle steering/jump performance, and machine/structural component testing, etc. Effect

Active Publication Date: 2007-11-28
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the high cost problem of real vehicle test, the present invention proposes a torsional fatigue test bench for automobile column type electric power steering

Method used

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  • Automobile pipe column type electric power steering gear torsional fatigue test platform and test method
  • Automobile pipe column type electric power steering gear torsional fatigue test platform and test method
  • Automobile pipe column type electric power steering gear torsional fatigue test platform and test method

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Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1, as shown in Figure 1 and Figure 2, the torsional fatigue test bench of the column type electric power steering includes: a geared motor 1, a motor support 2, a coupling 3, a transmission shaft 4, a mechanical counter 5, and a bearing Seat 6, crank wheel assembly 7, pin shaft 8, connecting rod 9, swing rod 10, column type electric power steering 11, steering gear shaft fixer 12, stand assembly 13, yaw angle dial 14 and steering gear Install the stand 15. The reduction motor 1 is fixed on the stand assembly 13 through the motor support 2, the two ends of the coupling 3 are respectively connected to the reduction motor 1 shaft and the transmission shaft 4, and the crank wheel assembly 7 is installed on the transmission shaft 4 supported on the bearing seat 6. On the other end, the mechanical counter 5 is fixed on the stand assembly 13 and is connected with the transmission shaft 4, as shown in Figure 3, the crank wheel assembly 7 is connected to the connectin...

Embodiment 2

[0035] Embodiment 2, compared to the torsional fatigue test rig in Embodiment 1, the connection relationship between the pin shaft and the crank wheel is improved as shown in Figure 6, and the pin shaft can be along the radial direction of the crank wheel as shown in Figure 7 and Figure 8 By adjusting the eccentricity, the swing angle of the pendulum 9 can be adjusted according to actual needs, which is convenient for installation and debugging.

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Abstract

The invention provides a torsion fatigue test bed for automobile tube-column electric power-assist steering and the testing method. The test bed comprises power device, mechanical transmission device and bench component. The power device is connected with measured electric power-assist steering by the mechanical transmission device to drive the electric power-assist steering turn repeatedly. The power device and the mechanical transmission device are set on the bench component. The testing method comprises following procedures. The first procedure is that the power device is used to drive measured electric power-assist steering turn repeatedly by the mechanical transmission device so as to simulate the condition of turning steering wheel by hand in vehicle running until electric power-assist steering can not work normally. The second procedure is that the total number of repeated turning is recorded. The third procedure is that according the number of turning the service life of electric power-assist steering is obtained. The invention solves the problem that prior actual vehicle test is high cost.

Description

【Technical field】 [0001] The present invention relates to a torsional fatigue test bench and a test method using the same, in particular to a torsional fatigue test bench used for electric power steering gears of automobiles and the like and a test method using the same. 【Background technique】 [0002] With the development of automobile technology, power steering system has become the standard setting of some cars, and about half of the cars in the world use power steering system. At present, some cars have used electric power steering, which has improved the economy, power and mobility of the car. [0003] When the car is running, the electric power steering uses the power generated by the electric motor to assist the driver in steering. Electric power steering is generally composed of torque sensor, electronic control unit, motor, reducer, mechanical steering and battery power supply. When the car is turning, the torque sensor detects the torque and direction of rotation...

Claims

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Application Information

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IPC IPC(8): G01M17/007G01M17/06
Inventor 刘晓建闫桂宁
Owner BYD CO LTD
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