Equipment for testing compression load and displacement of scalling rope for cars

A technology for automotive sealing strips and compressive loads, which is used in measuring devices, vehicle testing, and testing material strength by applying stable tension/pressure to achieve the effects of reducing the influence of human factors, high precision, and ensuring objectivity.

Inactive Publication Date: 2005-10-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The structures of the above devices are all manually operated, and can only be tested roughly, which has certain limitations.

Method used

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  • Equipment for testing compression load and displacement of scalling rope for cars
  • Equipment for testing compression load and displacement of scalling rope for cars

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Embodiment Construction

[0013] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings, but the scope of the present invention will not be limited.

[0014] figure 1 It is a schematic diagram of the device structure of the present invention. Such as figure 1 As shown, a kind of compression load and displacement test device for automobile sealing strip according to the present invention is composed of a stepping motor 1, a transmission mechanism 2, an indenter 3, a grating ruler 4, a CCD measuring system 6, a force sensor 7, a computer 8, The digital display instrument 9, the specimen fixture 10, the working table 11 and the frame 12 are composed. The stepping motor 1 is connected with a computer 8 and controlled by the computer 8 . The transmission mechanism 2 is connected with the stepping motor 1, and the transmission mechanism 2 is composed of a gear pair and a screw nut pair, and the stepping motor 1 and the transmission me...

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Abstract

The invention is the automobile sealing strip compressing load and displacement testing equipment. The step-by-step motor drives the driving device through the computer control; the driving device composed of the gear assistant and the thread nut assistant drives the pressing head to move straight and to press on the sealing bar; the raster ruler is equipped on the cantilever of the pressing head to get the precise displacement of the head for the reading of the digital displayer; the force sensor is equipped on the pressing head; the sealing bar produces the resistance to misshape the force sensor and is reflected by the voltage changing of the electric bridge; the computer converses the voltage value into the compressing charge of the sealing bar through the sensor; the CCD testing system is equipped at one side of the sealing bar to test the space track of the points of the section of the sealing bar. The invention can realize the complicated response test of the sealing bar and ensure the testing precision.

Description

technical field [0001] The invention relates to a testing device, in particular to a compression load and displacement testing device for automobile sealing strips, and belongs to the technical field of precision testing. Background technique [0002] The sealing strip plays the role of medium sealing, environmental isolation and interior and exterior decoration in the car. At the same time, it directly affects the closing force of the door and the comfort of the door operation. According to the test report of Ford Motor Company, the resistance of the sealing strip accounts for 30% of the closing force of the car door. ~50%, therefore, it has become one of the important factors affecting the performance of the vehicle. The material of the sealing strip is a nonlinear material, and its stress deformation is relatively complicated, especially the sponge rubber material of the sealing strip has high compressibility and strong deformation ability, coupled with the complexity of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
Inventor 赵建才姚振强
Owner SHANGHAI JIAO TONG UNIV
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