Movable sleeve for assembling and disassembling screw with two different threads and bumpy surface on screw top

Abstract

The invention discloses a movable sleeve for assembling and disassembling a screw with two different threads and a bumpy surface on the screw top, which is a tool special for assembling and disassembling a security screw of a non-standard fastener. The movable sleeve comprises an outer bottom section hollow cylinder (11), a bottom surface (13) of the outer bottom section hollow cylinder, an inner top cylinder (21), and the like. A clockwise screw-in concave type right-handed top stopper (130) on the bottom surface of the outer bottom section cylinder, or an anticlockwise screw-in concave type left-handed top stopper (230) on the bottom surface of the outer bottom section cylinder, or a concave type square nick (330) on the bottom section surface of the outer bottom cylinder, and the like are arranged on the bottom surface (13) of the outer bottom section hollow cylinder. After cooperatively used with corresponding specifications and shapes of security screws with bumpy surfaces on the tops of inner threaded holes, and the like, the movable sleeve disclosed by the invention can be used for carrying out theft-proof fixed installation or theft-proof installation with old ones disassembled and new ones assembled on a lot of fixed holes of outdoor and easily stolen wiring covers at the bottom sections of road lamp pole columns; and the social benefit is obvious.

Description

technical field [0001] The invention is a special assembling and disassembling tool for assembling and disassembling anti-theft screws of non-standard fasteners. After the present invention is used in conjunction with anti-theft screws with concave-convex surfaces on the top of the nail top and inner screw holes of corresponding specifications and shapes, the anti-theft fixing can be performed on the fixing holes of the wiring port cover at the bottom section of a large number of easy-to-theft facilities installed outdoors. The anti-theft installation that installs or removes the old and replaces the new is used, and its social benefit is obvious. Background technique [0002] So far, there is still a lack of truly effective, easy to assemble and disassemble, anti-theft and reliable anti-theft screws and special tools for assembly and disassembly, resulting in a large number of outdoor easy-to-theft facilities being stolen and sold. It has caused varying degrees of damage to...

AI Technical Summary

Problems solved by technology

[0002] So far, there is still a lack of truly effective, easy to assemble and disassemble, anti-theft and reliable anti-theft screws and special tools for assembly and disassembly, resulting in a large number of outdoor easy-to-theft facilities being stolen and sold. It has caused varying degrees of damage to people's production and life. constraints and influence

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