Three-rocker-arm test device for spatial mechanism compound motion microgravity expansion

Abstract

The invention provides a three-rocker-arm test device for composite motion microgravity expansion of a spatial mechanism. The three-rocker-arm test device comprises a rocker arm support, a first main shaft support, a second main shaft support, a first rocker arm assembly, a second rocker arm assembly, a third rocker arm assembly, a first main shaft body, a second main shaft body, a double-rotating-shaft assembly and a single-rotating-shaft assembly. The rocker arm support is installed on the truss, the first main shaft supports are installed at the top end and the bottom end of one side of the rocker arm support respectively, the first main shaft body is installed between the two first main shaft supports, the second main shaft supports are installed at the top end and the middle of the other side of the rocker arm support respectively, and the second main shaft body is installed between the two second main shaft supports. The first rocker arm assembly and the second rocker arm assembly are connected to the first spindle body through the double-rotating-shaft assembly, and the third rocker arm assembly is connected to the second spindle body through the single-rotating-shaft assembly. The invention always provides a device which is unfolded in a microgravity environment, and reliably verifies the feasibility of the ground unfolding test of the unfolding mechanism.

Description

Technical field [0001] The present invention belongs to the field of test devices, in particular to a three-rocker arm test apparatus for the space mechanism composite motion microgravity unfolding. Background [0002] With the continuous development of human space exploration technology, the continuous expansion of the scale of exploration, human activities are becoming more and more frequent, the number of launchers continues to increase, in the face of high development and launch costs, space agencies gradually tend to high storage ratio of structural design, the weight of the mechanism continues to be reduced, can achieve its function at the same time, as far as possible to reduce the cost of launch. For the lightweight design of the mechanism, it is crucial to be able to achieve its function, and for the unfolding mechanism, the robustness of its system design needs to be verified at the ground. Due to the difference in the ground gravity environment, it is necessary to carr...

AI Technical Summary

Problems solved by technology

Due to the difference in the ground gravity environment, the gravity of the mechanism needs to be unloaded on the ground, and the microgravity ground verification test is carried out. The development process of the microgravity unloading system is also constantly improving; the simulation technology of the rocker suspension test device is widely used in spacecraft For the ground microgravity deployment test of mechanisms, for the mechanism deployed around a fixed axis in the plane, the rocker suspension unloading method is often used, but for the working condition that the center of mass of the deployment mechanism changes continuously with the deployment process, the traditional suspension The hanging method cannot be satisfied with the microgravity deployment of the mechanism, and it is necessary to develop a test device for multi-rocker suspension unloading

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