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Rigidity test restraining device of car frame

A technology of restraint device and automobile frame, which is applied in the direction of measurement device, elasticity test, machine/structural component test, etc., can solve the problems of high cost, no involvement, poor versatility, etc.

Inactive Publication Date: 2011-05-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different restraint methods correspond to different degrees of complexity of restraint devices. The more complicated restraint devices are, the less versatile they are and the higher the cost
[0005] At present, from the patent documents found, there is no reference to the restraint method and the corresponding device used in the rigidity test of the automobile frame (body)

Method used

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  • Rigidity test restraining device of car frame
  • Rigidity test restraining device of car frame
  • Rigidity test restraining device of car frame

Examples

Experimental program
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Embodiment Construction

[0026] The constraint position and principle of the frame (body) bending condition stiffness test, such as figure 1 shown. Use a constraint XYZ component 3 to constrain the translational degrees of freedom of the vertical projection point of the rear axle of the car on the right longitudinal beam of the frame (body) in the three directions of X, Y, and Z. The upper part of the constraint XYZ component 3 is a clamp component, which is indicated by a double-dot dashed line, and is used to clamp the frame rail; the bottom is a support component, which is also indicated by a double-dotted dashed line, and is supported on the foundation. figure 1 — Figure 4 The situation in the corresponding place is similar to this and will not be described again; use a constrained XZ component 2 to constrain the translational degrees of freedom of the vertical projection point of the rear axle on the left longitudinal beam of the frame (body) in the X and Z directions; Use two constraint Z com...

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Abstract

The invention provides a rigidity test restraining device of a car frame and a corresponding restraining method thereof. When the rigidity of the car frame is tested by the method, the car frame is formed to be a simply supported beam structure during testing the bending rigidity and reversing rigidity, thus releasing three rotation degrees of freedom and necessary translation degrees of freedom at corresponding restraining positions; through the restraining device, the three rotation degrees of freedom at the corresponding restraining positions are released on the car frame through a ball hinge structure; and the translation degrees of freedom at the corresponding restraining positions are released through a sliding block structure. The restraining method of a car frame restraining bending and rotation test provided according to the minimum restraining theory is close to the actual condition of the car frame. Simultaneously, the test is carried out on an independent car frame, therefore, the restraining device is simple in structure and mounting method, thereby completely meeting the requirements of testing accuracy and reliability.

Description

technical field [0001] The patent of the invention relates to a restraint device for testing the rigidity of an automobile frame (body), which belongs to the technical field of automobile product testing. Background technique [0002] As the load-bearing base of the car, the frame (body) supports the engine, clutch, transmission, steering gear and other related components, and bears various loads such as bending and torsion. Insufficient frame rigidity will cause vibration and noise, and will also reduce the ride comfort and operational stability of the car, but the torsional rigidity of the frame should not be too large, otherwise the load on the frame and suspension system will increase and the tires will be damaged. The grounding performance is deteriorated. Therefore, it is particularly important to test and check the rigidity of the frame (body). Although many attempts have been made to calculate the stiffness of the frame at home and abroad, especially the applicati...

Claims

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Application Information

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IPC IPC(8): G01M5/00
Inventor 王国林郭九大侯永涛包正山于志媛
Owner JIANGSU UNIV
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