Inner hexagon screw fastener

Abstract

The invention relates to the field of fasteners, in particular to an inner hexagon screw fastener which comprises an inner hexagon screw head. The inner hexagon screw head comprises an end head body and a No.1 inner hexagon slot; the No.1 inner hexagon slot is formed in one side surface of the end head body; a first section is perpendicularly connected onto one side surface, far away from the No.1inner hexagon slot, of the end head body; the first section is connected with a third section through a second section; an end section is connected to one end, far away from the second section, of the third section; and one end, far away from the third section, of the end section is connected with the third section through a reinforced screw. According to the inner hexagon screw fastener providedby the invention, by additionally arranging the second section, the third section and the end section in threaded connection, the effective length of the screw is extended; and in addition, through the connection manner, the length can be adjusted at will, and the occurrence of the phenomena of joint weakness, unevenness and damage caused to the screw is avoided, so that the application range andthe use convenience of the inner hexagon screw fastener provided by the invention are greatly improved.

Description

technical field [0001] The invention relates to the field of fasteners, in particular to a hexagon socket screw fastener. Background technique [0002] Fasteners are a type of mechanical parts that are used for fastening connections and are widely used. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc., in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments All kinds of fasteners can be seen on the , chemical industry, instruments and supplies, etc., which are the most widely used mechanical basic parts. [0003] When using screw fasteners for installation and use in high-altitude power generation fans, the length of the screw fasteners has a specific model, or it can be extended by welding or shortened by cutting, but this will affect the The structure of the fastener body causes great adverse effects. The ...

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Problems solved by technology

[0003] When using screw fasteners for installation and use in high-altitude power generation fans, the length of the screw fasteners has a specific model, or it can be extended by welding or shortened by cutting, but this will affect the The structure of the fastener body causes great adverse effects. The welding extension method not only has the disadvantage of uneven welding surface, but also the structural strength of the weld is much smaller than the strength of the fastener body, which greatly reduces the performance of the fastener. Cutting and shortening will permanently shorten the length of the fastener, and the welding surface needs to be ground

In the bending test of plates or steel plates, different numbers of plates or steels will be accumulated, and multiple plates or steels will be accumulated and fixed together, and one screw is fixed with a length greater than the thickness of the multi-plates or steels, and when there are fewer plates or steels In this case, the longer screw will affect the test process, and it will be more troublesome to replace the corresponding shorter screw. In this case where the length of the screw needs to be temporarily changed, the flexible adjustment of the integrated screw is poor.

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