Pneumatic-based large-scale high-weight horizontal impact test bench

Abstract

The invention discloses a large-scale high-magnitude horizontal impact test stand based on a pneumatic type. The test stand comprises a cylinder assembly, an impact assembly, a table surface assembly, an impact assembly reset cylinder and an impact table substrate. The cylinder assembly comprises an impact cylinder and an air reservoir. A front end of a piston push rod of the impact cylinder is integrally and fixedly connected with an impact push board. The impact cylinder and the air reservoir are fixedly connected to the impact table substrate through a rear support. The impact cylinder is acted on the impact push board through the piston push rod and pushes the impact push board to hit the impact assembly arranged on a slide rail. The impact assembly comprises an impact head and an impact hammer body. Two side surfaces of the impact assembly are slidingly arranged in the slide rail. An ability of a test apparatus is the same with an ability of a pendulum bob impact test machine on aspects of a response frequency scope and an impact response spectrum inflection point frequency, but the ability of the test apparatus exceeds the ability of a pendulum bob impact test stand on aspects of important indexes, such as a load capability, an impact response spectrum peak value, a size of the table surface and the like.

Description

technical field [0001] The invention belongs to the field of spacecraft dynamics test, in particular, the invention relates to a pneumatic-based horizontal aerodynamic impact test equipment. Background technique [0002] During the full mission of the spacecraft, it needs to experience various types of mechanical environments, including vibration, noise, shock, acceleration, etc. Among them, the impact environment is mainly generated by various pyrotechnic devices on the spacecraft during the working process. The explosion impact environment is one of the most intense dynamic environments experienced by the spacecraft. It should be completed by means of explosive shock environment simulation test to improve the reliability of the product. The shock response spectrum test is used to simulate the explosion impact, and the shock response spectrum test has higher requirements on equipment capabilities. At present, it is mainly realized in two ways. One is to calculate the corr...

AI Technical Summary

Problems solved by technology

The impact test level of spacecraft products is generally required to exceed 1000g, and the impact test level of some products has reached 2000g, and even some models have the impact test level of more than 3000g. Some of these products that need to be tested have a higher quality, close to 200kg , for the current test technical conditions can not meet the needs of the test

In order to adapt to the growing needs of spacecraft, avoid insufficient assessment of spacecraft products during the test process, and fail to fully expose product design and manufacturing defects, it is very necessary to develop a set of aerodynamic high-level impact tests for spacecraft subsystems. system

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