Screw joint spherical hinge structure suitable for truss connection

Abstract

The invention discloses a screw joint spherical hinge structure suitable for truss connection. The screw joint spherical hinge structure suitable for truss connection comprises a metal ball seat, a raceway, a ball pin sleeve with a hole, balls, a ball head and a rod body integrally formed with the ball head; the metal ball seat is of a spherical structure, the surface of the metal ball seat is provided with at least one hollow inner cavity for placing the raceway, the raceway forms the hollow inner cavity, one side of the raceway is provided with an opening for the rod body to penetrate through, the ball pin sleeve with the hole is fixedly installed in an inner cavity of the raceway, the ball pin sleeve with the hole is provided with a plurality of installation holes for installing the balls, the ball head is movably installed in the inner cavity of the ball pin sleeve with the hole and slides in cooperation with the balls, and external threads are arranged on the outer wall of the free end of the rod body. According to the screw joint spherical hinge structure suitable for truss connection, the external thread at the free end of the rod body is used for being in threaded connection with the truss with the internal thread, an original welding connection mode is replaced, the additionally-arranged working difficulty caused by the adoption of the welding connection mode is lowered, the assembling time is shortened, and the assembling efficiency is improved.

Description

technical field [0001] The invention relates to the field of spherical joint structure design, in particular to a screwed spherical joint structure suitable for truss connection. Background technique [0002] my country's expressway network has developed rapidly in recent years, extending in all directions in the middle of the country. The total scale of my country's expressway network is about 85,000 kilometers, which is the largest expressway system in the world, and many expressway toll stations, also known as "toll sheds", will be built accordingly. The skeleton structure of the expressway toll station is constructed by welding trusses to trusses. This welding method is not only time-consuming but also laborious, which is not conducive to the assembly efficiency of the trusses. Moreover, under the action of high temperature, a heat-affected zone will be formed near the weld of the truss, and the mechanical properties of the steel will change, which will make the materia...

AI Technical Summary

Problems solved by technology

The skeleton structure of the expressway toll station is constructed by welding trusses to trusses. This welding method is not only time-consuming but also laborious, which is not conducive to the assembly efficiency of the trusses.

Moreover, under the action of high temperature, a heat-affected zone will be formed near the weld of the truss, and the mechanical properties of the steel will change, which will make the material brittle and affect the service life

Once the shed needs to be dismantled due to long-term aging, since the truss cannot be disassembled after welding, workers can only dismantle it by cutting the truss. However, the welded structure has continuity, and once a local crack occurs, it is easy to expand to the whole. The construction plan for cutting and demolition is very demanding

Once the cutting is not done properly, it is easy to cause the local area or even the whole greenhouse to collapse

Moreover, this cutting method is also likely to cause waste of material resources

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