High-low-temperature mechanical performance testing device for stretching mechanism

Abstract

The invention relates to a high and low temperature mechanical performance testing system, specifically a high and low temperature mechanical performance testing device for a stretching mechanism for testing the deployment performance of a large truss stretching mechanism in a high and low temperature and space weightless environment, including a truss storage unit and a force loading unit , a force-loading follower unit, a force-loading transmission frame and a gravity balance trolley, wherein the force-loading unit is movably installed on the force-loading transmission frame, the force-loading unit is driven to move by the force-loading follow-up unit, and the truss is arranged on On the truss storage unit, the free end of the truss is connected to the force loading unit, and the part of the truss protruding from the truss storage unit is lifted and supported by the gravity balance trolley. A pressure sensor, a force spring and a displacement sensor for measuring the compression of the force spring are provided. The invention can realize functions such as active following and active adjustment of loading force during testing, and the testing efficiency is high.

Description

technical field [0001] The invention relates to a high and low temperature mechanical performance testing system, in particular to a high and low temperature mechanical performance testing device for a stretching mechanism for testing the deployment performance of a large truss stretching mechanism in a high and low temperature and space weightless environment. Background technique [0002] In the environment of high and low temperature or weightlessness in space, it is particularly important to test the mechanical load-carrying performance and transmission efficiency characteristics of the large-scale truss extension mechanism during the deployment process. , the truss is driven by a servo motor to expand. While the truss is unfolded, in order to balance the gravity of the large truss, the prior art has used a manual hanging gravity balance device to balance the gravity. However, in the prior art, during the truss expansion process It is still impossible to realize the func...

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Problems solved by technology

[0002] In the environment of high and low temperature or weightlessness in space, it is particularly important to test the mechanical load-carrying performance and transmission efficiency characteristics of the large-scale truss extension mechanism during the deployment process. , the truss is driven by a servo motor to expand. While the truss is unfolded, in order to balance the gravity of the large truss, the prior art has used a manual hanging gravity balance device to balance the gravity. However, in the prior art, during the truss expansion process Active follow-up and active adjustment of loading force functions cannot be realized in the system, and the test efficiency needs to be improved

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