Expanding and retracting motion device with cable finishing function and load test device

Abstract

The invention relates to a retractable motion device and a load test device with a function of cable arrangement. The retractable motion device includes a cable sorting mechanism, a retractable driving mechanism, a locking mechanism and at least two unfolding platforms hinged in sequence through hinges, adjacent to each other. The two unfolding platforms are unfolded under the drive of the unfolding and retracting drive mechanism to form a linear support platform; the unfolding platform is equipped with a movable pulley assembly, a fixed pulley assembly, a retractable assembly and an X-axis movement assembly that can move along the linear support platform, and the fixed pulley block The components and the moving pulley assembly are arranged in sequence along the moving direction of the X-axis moving assembly, and the moving pulley assembly is slidably connected on the unfolding platform; one end of the first bearing wire rope is connected to the X-axis moving assembly, and the cable of the X-axis moving assembly is connected to the first bearing The steel wire ropes are assembled and wound on the fixed pulley assembly and the movable pulley assembly, and the other end of the first load-bearing steel wire rope is fixed on the unfolding platform; one end of the second load-bearing steel wire rope is connected with the movable pulley assembly, and the other end is connected with the retractable assembly.

Description

Technical field [0001] The present invention relates to a technical field related to space motion, specifically to a teleconstrucing motion device having a cable finishing function and a load test device. Background [0002] With the development of space science, space technology and human exploration of space, more and more space experiments need to be carried out. Especially with the completion of the space station and the explosive growth of the number of satellite launches, the types of space motion devices that space science experiment payloads need to rely on are developing in the direction of diversification, basicization, long life and scalability. Space launch missions have the characteristics of short supply of launch volume, launch weight, power supply, and communication resources, the space environment has high and low temperature alternating, high vacuum, strong radiation, space debris impact and other environmental characteristics, complex mission requirements and e...

AI Technical Summary

Problems solved by technology

[0004] At present, space devices generally install components with cables on fixed parts, and the cables are fixed along the fixed points of the structure; or reserve enough linear and arc-shaped cables near the moving mechanism to release enough Follow the movement space of the mechanism; these cable fixing methods do not meet the cable management requirements of the large-stroke reciprocating movement of the later space device and the moving parts with multiple or multiple cables

[0005] In addition, the linear motion components of the space device mostly adopt the screw transmission mode, and the screw nut is loaded hard, which causes more unnecessary loads and makes the driving devices such as the motor larger in size; in addition, in order to adapt to the upward vibration, the screw needs to be larger. Large rigidity, so the size of the screw shaft and the nut are large; in addition, often due to the non-parallel screw or guide rail, under the influence of high and low temperature, the mechanism may be stuck

Space science experiment loads are generally installed directly on the launch platform on the ground and connected by bolts. It is not easy to replace on-orbit, which does not meet the needs of long-term expandable and replaceable loads.

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