A High Thermal Stability Locking Joint

Abstract

The invention discloses a high-heat-stability locking joint. The high-heat-stability locking joint comprises a first connecting piece 1, a second connecting piece 2, fixed-pressure locking devices 3,a rotating shaft module 4 and low-impact release devices 5; the first connecting piece 1 and the second connecting piece 2 are fixedly connected with rod pieces, and form a rotating pair through a rotating shaft 42 and a bearing 43; the hinging between the first connecting piece 1 and the second connecting piece 2 is realized; and the fixed-pressure locking devices 3 with constant pressing force are arranged at two ends of the rotating shaft 42, and can realize locking through the low-impact release devices 5. Through reasonable layout of the fixed-pressure locking devices 3, the rotating shaft module 4 and the low-impact release devices 5, the whole joint is symmetrical relative to two planes passing through the axles of the rod pieces, so that the problem of weak symmetry of a traditional locking joint is overcome; through deformation of flexible supports 36, the axial gapless locking is realized, the locking gap of the traditional locking joint is eliminated, and the locking rigidity is improved; and through arrangement of the fixed-pressure locking devices 3 and the low-impact release devices 5, the same pretightening force at two ends of the rotating shaft 42 is guaranteed, and the problem of weak heat stability of the traditional locking joint is solved.

Description

technical field [0001] The invention relates to a locking joint with high thermal stability, which is especially suitable for locking joints that require constant locking force and high thermal stability, and belongs to the technical field of spatial structure connection mechanisms. Background technique [0002] The function of the locking joint is to make the two rods or structural parts rotate around the joint axis of rotation, and to lock the relative positional relationship of the two rods or structural parts at a specified position. [0003] There are mainly two types of locking joints commonly used in the field of spatial structure connection mechanisms: cam type and latch type. The two structural forms are usually only symmetrical about a certain plane of the axis of the connected rods. The structural symmetry is poor, and uneven thermal deformation will occur in the space thermal environment, which will affect the thermal stability of the entire mechanism. At the sa...

AI Technical Summary

Problems solved by technology

The two structural forms are usually only symmetrical about a certain plane of the axis of the connected rods, and the structural symmetry is poor. In the space thermal environment, uneven thermal deformation will occur, which will affect the thermal stability of the entire mechanism.

At the same time, the direction of the locking force of the two structures is perpendicular to the direction of the axis of the joint shaft, and there is no or weak constraint on the movement direction along the axis of the joint shaft, which is not conducive to the improvement of the stiffness of the entire mechanism.

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