Device for testing vertical rigidity performance of motorcycle frame

Abstract

The invention discloses a device for testing vertical rigidity performance of a motorcycle frame. The device comprises a base, wherein a pressure cylinder is fixedly arranged on the vertical frame of the base; the tail end of the piston rod of the pressure cylinder is connected with a back pressure plate seat; a grating scale sliding plate is arranged on the vertical side of the back pressure plate seat; a grating scale corresponding to the grating scale sliding plate is fixed on the base; a horizontal support seat is arranged on the horizontal frame of the base; a horizontal sliding seat is arranged on the horizontal support seat by a horizontal linear sliding rail on the horizontal support seat; a front fork turning seat is fixed on the horizontal sliding seat and connected with a motorcycle head mounting shaft for fixing the front fork of the motorcycle frame; and a left bracket seat and a right bracket seat which are used for fixing the back fork of the motorcycle frame are fixedly arranged at positions which are close to the vertical frame on the horizontal frame of the base. The stressing condition of a motorcycle which falls from a ridge in the driving process is simulated and the rigidity of the motorcycle is tested and analyzed by the device through the pressure cylinder, pressure sensors and the grating scale, and the device has a simple and rational structure and high practicability.

Description

technical field [0001] The invention relates to a performance testing device, in particular to a motorcycle frame vertical rigidity performance testing device for testing the strength or rigidity of a developed new motorcycle frame to ensure sufficient safety when it leaves the factory. Background technique [0002] The motorcycle frame is a large-scale force-bearing member with very strict requirements, and it must have sufficient strength and rigidity to ensure that the factory motorcycle has sufficient safety performance. Under the action of load, the frame must have sufficient static strength and fatigue strength. Static strength refers to the ability of the frame to resist permanent deformation when subjected to impact loads. Fatigue strength refers to the ability of the motorcycle to withstand alternating stress without fatigue cracks and fatigue fractures during driving. Practice has proved that the main damage form of the motorcycle frame is fatigue damage. General...

AI Technical Summary

Problems solved by technology

Practice has proved that the main damage form of the current motorcycle frame is fatigue damage. Generally, cracks are generated in local areas (welded joints), and then the cracks propagate to cause fracture.

The fatigue strength is not enough. After a period of use, serious accidents such as frame breakage and permanent deformation are prone to occur, which poses a serious threat to personal safety.

At present, the performance test of the newly developed motorcycle frame generally adopts the on-site test method. The on-site test can best verify the reliability of the product and is also the most reliable test method. The collection of on-site product data plays a pivotal role in the entire test. Therefore, before a new product is put into production, a road test of 6,000-10,000 kilometers is required. According to the requirements of the relevant industry, this test needs to be tested on a certain proportion of road types. It will not only take at least three months, but also require A lot of financial and material resources have been invested; in addition, collecting on-site data is a challenging task. Corresponding managers organize and manage, so that more accurate data can be obtained

The traditional road test method is time-consuming, costly and labor-intensive, and it is not conducive to the rapid introduction of new products into the market

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