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Duration test device of automatic adjustment arm

A technology for automatically adjusting arms and testing devices, which is applied in the automotive field and can solve problems such as complicated operations, large brake drums, and uneconomical requirements

Active Publication Date: 2017-11-28
ZHEJIANG VIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. If real brake pads are used for wear test, since the brake pads are consumables, the cost of testing is high and does not meet the economic requirements
[0004] 2. Inspectors often use the increased distance of the brake drum to simulate the wear of the brake pads. Although the problem of economy is solved, the simulation accuracy of this simulation method is poor and the effect is not good
[0005] 3. The volume of the brake drum is large, the operation is relatively complicated, it is not convenient for the staff to operate, and the work efficiency is low

Method used

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  • Duration test device of automatic adjustment arm
  • Duration test device of automatic adjustment arm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Such as figure 1 with figure 2 As shown, a kind of automatic adjustment arm durability test device comprises worm gear 3, worm screw 7, transmission wheel 6 and rotating shaft 1, and described worm gear 3 and worm screw 7 are meshed; When driving the wheel, the mechanism is self-locking, and the self-locking effect of the turbine 3 worm 7 mechanism is used to simulate the resistance torque during the braking process of the car. The transmission wheel 6 is sleeved on the rotating shaft 1 and has an interference fit with the rotating shaft 1. The rotating shaft 1 passes through the turbine 3 and is transmitted between the transmission wheel 6 and the turbine 3; The torsion spring 5 on the top, one end of the torsion spring 5 is fixedly connected with the transmission wheel 6, and the other end is a connecting end. During the test, the automatic adjustment arm is sleeved on the rotating shaft 1 and connected with the connection end of the torsion spring 5. When the auto...

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Abstract

The invention relates to the field of automobiles and particularly discloses a duration test device of an automatic adjustment arm. The test device comprises a turbine, a worm, a drive wheel and a rotation shaft. The turbine is engaged to the worm. The drive wheel sleeves the rotation shaft and is fixedly connected therewith. The worm penetrates through the turbine and is driven between the drive wheel and the turbine. The test device also comprises a torque spring sleeving the rotation shaft. One end of the torque spring is fixedly connected with the drive wheel and the other end is connection end. According to the invention, by use of unidirectional self-locking and precise driving of the turbine and worm, abrasion of a brake drum is simulated, and the test device is simple in structure, convenient to operate, low in use cost and is also advantaged by high simulation precision.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an automatic adjustment arm durability test device. Background technique [0002] The automatic adjusting arm is mainly used in pneumatic cam drum brakes. The main function is to automatically compensate the gap set between the brake lining and the brake drum after the brake lining is worn. After the automatic adjustment arm is produced, it needs to carry out the automatic adjustment durability test before leaving the factory according to the CJT 242-2007 standard and the SAE J 1462-2011 standard. At present, the commonly used detection method is to form a pneumatic drum brake with real brake drums and brake linings, and then connect the automatic adjustment arm to the brake for durability performance testing. Although this method can simulate a more realistic working environment, it also has the following technical problems: [0003] 1. If real brake pads are used for the wear test,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 俞可可马志敏罗永俊韩国锦
Owner ZHEJIANG VIE SCI & TECH
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