A self-adaptive telescopic expansion screw and its processing device

Abstract

The invention discloses an adaptive telescopic expansion screw and a processing device thereof. The expansion screw comprises a screw rod. A nut is matched with a connecting piece on the screw rod; the screw rod includes a screw body on which a fixing block is arranged; the connecting piece includes a connecting block on which a positioning block is arranged and a threaded column is arranged on the connecting block. The expansion screw of the present invention changes the traditional single-sleeve expansion screw by setting flexible connectors, increases the stability of the expansion screw, improves the fixing strength, and the positioning block reduces the radial profit and prevents the connector from breaking; the processing device of the present invention is orderly The expansion screw is assembled, and the gear and rack are engaged to drive the screw to rotate, which is convenient for the assembly of both ends of the expansion screw. The first limit block is limited and clamped by the first clamping block to avoid excessive rotation of the screw and improve the accuracy of rotation. Flexibility Strong.

Description

technical field [0001] The invention relates to an expansion screw, in particular to an self-adaptive telescopic expansion screw and a processing device thereof. Background technique [0002] Expansion screws generally refer to metal expansion screws. The expansion screw is fixed by using the wedge-shaped slope to promote the expansion to generate friction and grip force to achieve the fixing effect. One end of the screw is threaded, the other end has a taper, and the outside is covered with an iron sheet (some are steel pipes). Half of the iron sheet cylinder (steel pipe) has a number of cuts. Put them into the hole made on the wall together, and then lock the nut, and the nut pushes the screw out. Pull, pull the taper into the iron cylinder, and the iron cylinder is expanded, so it is tightly fixed on the wall. It is generally used for fastening fences, awnings, air conditioners, etc. on cement, bricks and other materials. Traditional expansion screws It is often fixed by...

AI Technical Summary

Problems solved by technology

One end of the screw is threaded, the other end has a taper, and the outside is covered with an iron sheet (some are steel pipes). Half of the iron sheet cylinder (steel pipe) has a number of cuts. Put them into the hole made on the wall together, and then lock the nut, and the nut pushes the screw out. Pull, pull the taper into the iron cylinder, and the iron cylinder is expanded, so it is tightly fixed on the wall. It is generally used for fastening fences, awnings, air conditioners, etc. on cement, bricks and other materials. Traditional expansion screws It is often fixed by a single sleeve, the fixing effect is poor, it is easy to loosen, and the fixation is not very firm

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