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Pull wire epb test load box

A test load box and pull-wire type technology, which is applied in the field of EPB testing, can solve problems such as difficulty in implementing fault injection testing, inability to use universally, and difficulty in installing tension sensors

Active Publication Date: 2022-06-24
FAW CAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The parking actuator of the real car is the rear parking brake caliper. The installation position of the rear brake caliper is different for different models, and the structure and size of the parking brake pull arm of the caliper are different. Different, completely using the real thing needs to make a one-to-one tooling sample, which cannot be used universally
[0005] The EPB HIL system needs to collect the actual data of the pulling stroke and feed it back to the real-time simulation platform to realize closed-loop control. However, it is very difficult to install the pulling force sensor and stroke sensor in the parking brake caliper
[0006] It is also difficult to achieve fault injection testing with real vehicle parking brake calipers

Method used

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  • Pull wire epb test load box
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  • Pull wire epb test load box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 As shown, the pull-wire EPB test load box of the present invention includes a base 1, a pull hook 22, a displacement sensor 33, a force sensor 34, a pull rod 4, a first movable baffle 31, a second movable baffle 61, and a hole baffle 62. The first spring 42, the second spring 43, the limiting structure; the base 1 has a first fixed baffle 11 and a second fixed baffle 12; one end of the EPB pull wire 2 is connected with the pull hook 22, and the other end is connected by the EPB pull hook The guide hole of the guide sleeve 21 passes through and is connected to the cable-type electronic parking unit assembly; the EPB hook guide sleeve 21 is installed and fixed on the second fixed baffle 12; the hook 22 is fixed on the right side of the first movable baffle 31; displacement The sensor 33 is arranged on the base 1 and is connected with the first movable baffle 31 through the displacement sensor pull rod 32; the left end of the pull rod 4 is connected with the ...

Embodiment 2

[0029] like figure 2 As shown, the pull-wire EPB test load box of the present invention includes a base 1, a pull hook 22, a displacement sensor 33, a force sensor 34, a pull rod 4, a first movable baffle 31, a second movable baffle 61, and a hole baffle 62. The first spring 42, the second spring 43, the limiting structure; the base 1 has a first fixed baffle 11 and a second fixed baffle 12; one end of the EPB pull wire 2 is connected with the pull hook 22, and the other end is connected by the EPB pull hook The guide hole of the guide sleeve 21 passes through; the EPB hook guide sleeve 21 is installed and fixed on the second fixed baffle 12 ; the pull hook 22 is fixed on the right side of the first movable baffle 31 ; the displacement sensor 33 is fixed on the first movable baffle 31 up; the left end of the pull rod 4 is connected to the second movable baffle 61 and fixed by the locking nut 41, the middle part is passed through the through hole on the holed baffle 62 and the...

Embodiment 3

[0031] like image 3As shown, the pull-wire EPB test load box of the present invention includes a base 1, a pull hook 22, a displacement sensor 33, a force sensor 34, a pull rod 4, a first movable baffle 31, a second movable baffle 61, and a hole baffle 62. The first spring 42, the second spring 43, the limiting structure; the base 1 has a first fixed baffle 11 and a second fixed baffle 12; the first fixed baffle 11 and the second fixed baffle on the base 1 A guide rail 13 is arranged between the plates 12, and the bottom of the first movable baffle 31 is slidingly matched with the guide rail 13 to increase the stability of the system; The EPB hook guide sleeve 21 is installed and fixed on the second fixed baffle 12; the hook 22 is fixed on the right side of the first moving baffle 31; The movable baffle 31 is connected; the left end of the pull rod 4 is connected with the second movable baffle 61 and fixed by the locking nut 41, the middle part is passed through the through ...

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Abstract

The invention relates to a pull-wire type EPB test load box. The base of the load box has a first fixed baffle, and a pull hook is fixed on the right side of the first movable baffle; one end of the EPB pull wire is connected to the hook, and the other end is connected to the pull-wire type The electronic parking unit assembly is connected; the displacement sensor is fixedly connected with the first movable baffle; the left end of the tie rod is connected with the second movable baffle, and the middle part is passed through the perforated baffle and the through hole on the first fixed baffle. The right end is fixedly connected with the first moving baffle; the force sensor is fixed on the pull rod; the first spring is set on the pull rod and is located between the second moving baffle and the hole baffle, and the second spring is set on the pull rod and is located on the hole. Between the baffle and the first fixed baffle. The invention can simulate the parking calipers of different items, realize the generalization of the test system, the collection of force and stroke and the fault injection test.

Description

Technical field: [0001] The invention belongs to the technical field of EPB testing, and relates to a wire-pulling EPB testing load box. Background technique: [0002] During the cable-pull EPB test, it is necessary to monitor the pulling force received by the cable and the travel traveled by the cable, but the structure of the cable-pull EPB parking caliper is so precise that it is impossible to add a force sensor and a displacement sensor; and displacement sensors, which cannot be used universally on new projects. [0003] The pull-wire EPB HIL-electronic parking brake hardware-in-the-loop simulation test system consists of three parts: real-time simulation platform, EPB control unit (including motor) with pull-wire assembly, parking brake actuator and pulling force travel acquisition mechanism. The real-time simulation platform provides the driving environment and vehicle status information to the EPB control unit. The EPB control unit drives the motor according to the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 杨庚张红燕王秀颖王雷白鹍鹏李遵涛姚诚马志国
Owner FAW CAR CO LTD