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Detection method for droop of car door structure

A detection method and measurement method technology, which is applied in the testing of machines/structural components, vehicle testing, measuring devices, etc., can solve problems such as difficult to close, not tight, and affect the normal closing of car doors, so as to increase the drooping load Effect

Active Publication Date: 2019-06-14
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

This deformation will cause friction between the door and adjacent parts during use, and even affect the normal closing of the car door in severe cases, causing the phenomenon that it is not tightly closed or difficult to close.

Method used

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  • Detection method for droop of car door structure
  • Detection method for droop of car door structure

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Embodiment Construction

[0024] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0025] A detection method for detecting sag of a vehicle door structure, wherein the vehicle door structure is connected to a vehicle body structure 2 through a vehicle door hinge; the detection method includes a test verification measurement method; the test verification measurement method includes the following steps

[0026] (1) fixing the body structure 2 to be measured;

[0027] (2) Select the car door structure 1 to be detected, and determine the loading point 4 and the measuring point 3 of the car door;

[0028] (3) After step (2) is completed, connect the dial indicator 5 for measuring the downward movement of the car door at the measurement point 3. After the connection of the dial indicator 5 is completed, the loading point 4 is realized by adding a counterweight to the loading po...

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Abstract

The invention relates to the field of detection of car droop, in particular to a detection method for droop of a car door structure. The car door structure is connected with a car body structure by virtue of a car door hinge. The detection method comprises a test verification and measurement method and a CAE simulation analysis method. According to the detection method, a counterweight is added tothe car door structure so as to increase a drooping load of the car door, the downward movement of a corresponding position of the car door is measured by virtue of a dial indicator, the droop of thecar door structure can be known by virtue of calculation, by virtue of multi-times measurement, and the drooping resistance of the car door can be obtained by processing the data, so that the actualproduction requirement can be better met; and meanwhile, the downward movement of the car door structure obtained b virtue of the CAE simulation analysis method is compared with the downward movementof the car door structure obtained by virtue of the test verification and measurement method, so that the accuracy of the detection method of the invention can be ensured.

Description

technical field [0001] The invention relates to the field of car door sag detection, in particular to a detection method for car door structure sag detection. Background technique [0002] The sagging of car door structure is a phenomenon often encountered in the process of vehicle assembly, test and use. Its main manifestations are the instantaneous sagging of the door caused by its own weight and the sagging deformation of the door structure under the action of vertical external load. This deformation will cause friction between the car door and adjacent parts during use, and even affect the normal closing of the car door in severe cases, causing the phenomenon that the car door is not closed tightly or difficult to close. Therefore, in the design process of a car, the anti-sag performance will be one of the very important performance parameters in the performance of the door structure system; so a detection method that can be used for the detection of the sag of the door...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01B5/02G01M17/007
Inventor 廖小红
Owner CHERY AUTOMOBILE CO LTD
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