High-precision attitude adjustment equipment for thin-wall cabin of large spacecraft

Abstract

The invention discloses high-precision attitude adjustment equipment for a thin-wall cabin of a large spacecraft. The high-precision attitude adjustment equipment comprises a first cabin body platform, a second cabin body platform, a first fixed bracket assembly, a second movable bracket assembly, a guide rail sliding block assembly, a third movable bracket assembly, a fourth fixed bracket assembly, universal trundles, adjusting supporting legs, an active executing mechanism, a follow-up executing mechanism, an axial limiting mechanism, an auxiliary supporting device, a position feedback assembly, a first control system, a second control system, a transfer structure and a hoisting structure. According to the high-precision attitude adjustment equipment, three-point synchronous active cooperative driving and online two-stage compensation technologies are adopted, so that the risk of cabin deformation caused by differential rotation is avoided, a self-adaptive follow-up axial displacement device is designed to carry out axial pre-compression in real time, good adaptation in a narrow space and a limited area is achieved, the rigidity of the overall structure of equipment is guaranteed, and the influence of deformation on cabin precision measurement is reduced.

Description

technical field [0001] The invention relates to the field of ground mechanical support equipment for the general assembly of spacecraft, and performs high-precision attitude adjustment, long-term parking and fast transfer for large-scale spacecraft thin-walled cabins, and specifically relates to a high-precision attitude adjustment for large-scale spacecraft thin-walled cabins equipment. Background technique [0002] In the process of final assembly and testing of large spacecraft, the size and weight of the cabin continue to increase, and the complexity of assembly is increasing. In order to reliably fix the load equipment of each subsystem to the predetermined position and effectively connect them with cables and conduits , the attitude of each segmented cabin in the assembly hall needs to be adjusted with high precision, and it can be parked and quickly transferred in different experimental areas and designated workstations for a long time. [0003] In the prior art, the...

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Problems solved by technology

[0004] First, the size and weight of the cabin change during the assembly process. The traditional single equipment has insufficient scalability and low versatility, and cannot adapt to the variability of working conditions in the parallel assembly process of multiple cabins.

[0005] Second, the thin-walled cabin itself is a weakly rigid structure, and the traditional way of supporting and rolling at both ends of the head and tail has the risk of causing distortion and deformation of the large cabin

[0006] Third, there are many types of load equipment inside and outside the cabin, and the space occupies a large proportion. In a narrow space and a limited area, the fixed position of the cabin body is easy to cause bumps, and there is a risk of damage to the load equipment and affecting the accuracy of the cabin.

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