Small online impact detection test stand

Abstract

The present invention is a small online impact detection test stand which is characterized in that: an accelerated mechanism is an inertial accelerator that a motor and a belt pulley drive a roller assembly to rotate through a pneumatic clutch mechanism and a wire rope pulls a sliding platform to move, a clutch for an automobile is used to drive the acceleration mechanism, a dynamic condition of automotive driving is effective simulated, a frequency converter is used to adjust an impact acceleration, and impact pulse width adjustment is formed through synchronous adjustment of variable frequency drive frequency and a waveform pad. Thus an impact acceleration value and a pulse width are continuously adjustable in a large range, and the needs of small laboratory detection and production on-line detection are satisfied.

Description

technical field [0001] The invention relates to mechanical experiment detection equipment, in particular to an acceleration impact collision test bench. Through laboratory experiments, the impact that the test piece may receive during the driving of the car is simulated, so as to evaluate the impact resistance of the product structure and optimize the structural strength of the product. Background technique [0002] In our country, there are many types and methods of impact test equipment, but most of them realize the impact resistance test through vibration. The detection pulse width is relatively short, generally 10-29ms, and only a few can achieve longer pulse width under different accelerations. impact crash equipment, but none have yet been miniaturized. [0003] The general large-scale impact crash test bench can reach a higher impact speed in a short distance by ejecting the product with a rubber rope, but it is difficult to control the acceleration; there is also a ...

AI Technical Summary

Problems solved by technology

[0003] The general large-scale impact crash test bench can reach a higher impact speed in a short distance by ejecting the product with a rubber rope, but it is difficult to control the acceleration; there is also a winch that is used to pull the test piece, and the impact speed can be carefully adjusted, but preparations are required Very long acceleration track and test site; through the hydraulic system to generate vibration and shock to test the acceleration equipment, part of the energy is lost during the vibration process, and a large test site and a large test bench are required

[0004] At present, the impact resistance performance test of some auto parts requires a long pulse width, about 60-100ms, which can only be achieved by a few large-scale impact crash test benches in national laboratories, and the detection process is complicated and requires multiple people to operate. High testing and equipment costs

At the same time, the professional requirements for operators are relatively strong, and it is not suitable for general laboratory and online testing.

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