A Repeated Locking and Release Mechanism for On-orbit Load Modules

Abstract

The invention relates to a repetitive locking and releasing mechanism for an on-rail load module, which includes a lead screw interlocking mechanism, a transverse push block, a connecting rod, a longitudinal push block and a locking mechanism, and the transverse push block is fixed to the translation end of the lead screw interlock mechanism Connection, the vertical push block and the horizontal push block are arranged in parallel; the two ends of the connecting rod are respectively connected with the vertical push block and the horizontal push block; the longitudinal push block is provided with a locking protrusion on the side away from the horizontal push block; the locking mechanism The upper corresponding locking protrusion is provided with a locking groove, and the locking protrusion is matched with the locking groove; the horizontal push block is translated under the drive of the translation end of the screw linkage mechanism, and the longitudinal push block is pushed through the connecting rod Move back or toward the horizontal push block, so that the locking protrusion and the locking groove are clamped or separated to realize locking or releasing the locking mechanism; after locking in place, the present invention has self-locking ability, which can lock the module The function of tight holding; the present invention does not have wearing parts, which can improve its service life.

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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