A stepwise loading impact test device and impact method thereof
A technology of impact test and graded loading, which is applied in the direction of impact test, measuring device, machine/structural component test, etc. It can solve the problems of high motor power requirements, adverse effects of test vehicles, easy to cause safety accidents, etc., to avoid unfavorable impact, simple structure and low cost
Inactive Publication Date: 2015-09-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0004] After a load starts to be released, the energy storage element exerts a large force on the test vehicle, resulting in a large initial acceleration, which not only adversely affects the test vehicle, but also requires high power for the loaded motor, which is likely to cause safety accidents
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[0024] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:
[0025] Such as figure 1 , figure 2 As shown, a graded loading impact test device includes a base 1, two linear guide rails 3 are arranged in parallel on the base 1, a test vehicle 5 placed on the linear guide rails 3, and a graded energy storage device 7 connecting the base 1 and the test vehicle 5 The graded energy storage device 7 includes an elastic element 8, several graded energy storage node units 9, and several graded energy storage node units 9 are connected in series through the elastic element 8 and then placed on the auxiliary guide rail 4, and the auxiliary guide rail 4 is arranged with An unlocking controller (not shown in the figure) with 9 matching hierarchical energy storage node units; a motor 6 is arranged on the side of the test vehicle 5 away from the base 1; a waveform generator is arranged on the side of the base 1 close to the t...
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The invention discloses a gradation loading impact test device and an impact method of the gradation loading impact test device, and relates to the technical field of impact test devices. Two linear guide rails are arranged in parallel on a base. A test vehicle is arranged between the linear guide rails. The test vehicle and the base are connected through a graded energy storage device. The graded energy storage device comprises an elastic element and a plurality of graded energy storage node units. The graded energy storage node units are sequentially connected in series through the elastic element and then arranged on an auxiliary guide rail. Unlocking controllers matched with the graded energy storage node units in number are arranged on the auxiliary guide rail. A motor is arranged on the side, far away from the base, of the test vehicle. A waveform generator is arranged on the side, close to a test machine, of the base. By means of the gradation loading impact test device and the impact method of the gradation loading impact test device, the purposes that the equipment is simple and convenient to use, simple in structure and low in manufacturing cost, and a horizontal impact test can be accelerated continuously are achieved.
Description
technical field [0001] The invention relates to the technical field of impact test devices. Background technique [0002] The purpose of the impact test is to test the safety, reliability and effectiveness of the test piece under a certain impact load. Before the product is used in the factory, it must undergo an impact test to assess the impact of the impact vibration environment on the product's structural strength, fatigue characteristics, etc., and to evaluate the mechanical structure of the product's tolerance to the impact environment. The impact test can provide a certain degree of confidence assessment on the ability of the product to withstand non-repetitive impact during transportation and use from the structure and function, determine the adaptability of the product to the impact environment and evaluate the integrity of the product structure. Impact testing machine is the most commonly used impact testing device. [0003] The general impact test device uses the...
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IPC IPC(8): G01M7/08
Inventor 李亮刘英智徐庆华张轶杨吟飞樊新华吴贤丁文丽
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS