Parking brake durability test device

Abstract

The invention discloses a parking brake durability test device, which includes a test bench support frame fixedly arranged, and also includes an execution mechanism, a reaction mechanism and a control system arranged on the test bench support frame, and the execution mechanism adopts a swing arm mechanism, The parking brake handle is separated from the execution cylinder to increase the safety factor of the test and improve the quality of the test; the reaction force can be adjusted in a large range, which can fully meet the requirements of the standard for the test load; the control system controls the execution cylinder by collecting the signal of the force sensor The action can achieve load control, and can accurately control the test load, effectively improving the quality of the test. The invention can be used for durability test of the parking brake of any vehicle type.

Description

technical field [0001] The invention belongs to the field of automobiles, and relates to a vehicle performance detection device, in particular to a parking brake durability test device. Background technique [0002] The parking brake system usually refers to the manual brake installed on the motor vehicle, which is used to stabilize the vehicle after the vehicle has stopped, so as to avoid accidents caused by rolling when parking on sloped roads. A parking brake system with stable functions and good performance improves the driving safety to a great extent. Only by ensuring the reliable and durable performance of the parking brake system can the safety and reliability of driving be guaranteed. [0003] At present, although the test benches used by parking brake manufacturers for the verification of parking brake durability are in different forms, generally speaking, the main components include the actuator (that is, the handle that simulates the driver's manipulation of the ...

AI Technical Summary

Problems solved by technology

[0007] (1) It is difficult to choose the spring——according to the requirements of the test load, the spring with the appropriate stiffness is selected, and most of them need to be specially made;

[0008] (2) The stability of the spring force is poor - after a certain endurance cycle, the stiffness of the spring will change, resulting in a change in the test load and affecting the quality of the test;

[0009] ⑶ Poor durability of the spring - after a certain endurance cycle, the spring will break, resulting in the suspension of the test, and a new spring needs to be replaced

[0011] ⑴ In the parking brake durability test standard, there are clear numerical requirements for load and stroke, and testing by controlling the test stroke will inevitably lead to poor accuracy of the test load;

As a result, the adjustable range is limited, and the accuracy depends entirely on the quality of the test operator, resulting in low accuracy

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