Repeated locking and releasing mechanism of on-orbit load module

Abstract

The invention relates to a repeated locking and releasing mechanism of an on-orbit load module. The mechanism comprises a lead screw linkage mechanism, a transverse push block, a connecting rod, a longitudinal push block and a locking mechanism, the transverse push block is fixedly connected with the translation end of the lead screw linkage mechanism, and the longitudinal push block and the transverse push block are arranged in parallel; two ends of the connecting rod are rotationally connected with the longitudinal push block and the transverse push block respectively; a locking protrusion is arranged on the side, away from the transverse push block, of the longitudinal push block; a locking groove corresponding to the locking protrusion is formed in the locking mechanism, and the locking protrusion is matched with the locking groove; the transverse push block is driven by the translation end of the lead screw linkage mechanism to translate, and the longitudinal push block is pushedto move back to or towards the transverse push block through the connecting rod, so that the locking protrusion is clamped with or separated from the locking groove, and the locking mechanism is locked or released; after the module is locked in place, the self-locking mechanism has a self-locking capability and plays a role in locking and maintaining the module. Easily-damaged parts do not exist,and the service life can be prolonged.

Description

technical field [0001] The invention relates to a space locking and releasing motion mechanism, in particular to a repetitive locking and releasing mechanism of an on-rail load module. Background technique [0002] In the process of scientific experiments on the International Space Station, according to the planning and arrangement of scientific experiments, it is necessary to rely on astronauts to repeatedly lock and release different scientific experiment loads. [0003] With the development of my country's space station construction, astronauts in the field of space science will operate in orbit in the future, and the demand for maintenance and replacement of space science payload modules will increase day by day. Due to the many constraints on astronauts’ activities, on-orbit operations are extremely difficult. Therefore, it is urgent to design a unified standard interface that meets the ergonomics of astronauts’ on-orbit operations. The mechanism for future scientific ...

AI Technical Summary

Problems solved by technology

[0007] 1) The size of the locking force depends on the top tightening force of the top block and the friction force between the contact surfaces, so the locking force is limited;

[0008] 2) Therefore, according to the different requirements of the module weight on the locking force, different batches of locking strips need to be redesigned, and the design and production costs are high;

[0009] 3) After the screw is used repeatedly for many times, it is prone to fatigue deformation, so the service life of the locking strip is short;

[0010] 4) The locking strip has no positioning function, and it is easy to damage the contact parts between the module and other places during the locking process;

[0011] 5) The locking bar has no self-locking ability

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