Pendulum bob shock test apparatus table board with locking guide rail device

Abstract

The invention discloses a pendulum bob shock test apparatus table board with a locking guide rail device. The pendulum bob shock test apparatus table board comprises an impact table board, a table board guide rail and a table body guide rail, wherein the impact table board is fixed on the table board guide rail; the table body guide rail is fixed on an impact table base; the impact table board and the table board guide rail are arranged on the table body guide rail in a sliding manner as a whole; an adjusting bolt is arranged at the bottom of the table body guide rail and used for adjusting the depth of parallelism of the table body guide rail and a to-be-tested pendulum bob; and the table board guide rail is of a square frame structure. The pendulum bob shock test apparatus table board and the guide rail device disclosed by the invention have better table board uniformity, repeatability and stability, and simultaneously have locking functions, loosening of the table body caused by repeated impact of the table board at present is avoided, and the impact test efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the field of spacecraft dynamics test, in particular, the invention relates to a pendulum type impact test bench device with good impact characteristics and anti-loosening capability. Background technique [0002] The various transient loads that spacecraft products are subjected to during transportation, launch, orbital operation or return are called shock environments. During the impact process, the external energy is transmitted to the spacecraft and its components in an instant, and the resulting sudden changes in displacement, velocity and acceleration may cause damage or even failure of the spacecraft structure and instrumentation, resulting in the failure of the spacecraft. normal work. Therefore, the impact test has become one of the environmental simulation test items to test and expose the design problems and processing defects in the spacecraft development process. [0003] With the gradual deepening of the underst...

AI Technical Summary

Problems solved by technology

For products with a magnitude greater than 1000g, the repeatability of the shock response spectrum during the shock test is poor (the probability that the control spectrum exceeds the ±6dB tolerance band is greater than 20%)

Now, the impact magnitude of many aerospace products is above 1000g, so it is difficult for such products to complete the test on this equipment;

[0005] (2) The slide rail on the table is easy to loosen under the action of repeated impact force (especially a large number of impact tests), so that the boundary conditions cannot be fixed, and regular debugging experience cannot be formed, which makes the impact debugging process more difficult

[0006] These problems and deficiencies not only limit its test capability, but also lead to time-consuming and laborious work on specimen installation, spectrum adjustment and test operation, which seriously affect the efficiency of impact test.

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