Anti-tripping fastening screw

Abstract

The invention discloses an anti-tripping fastening screw which comprises a limiting nut, a fastening screw body, an outer anti-tripping thread, an adsorption type anti-tripping device, a frustum-shaped guide piece and a magnetic type elastic pulling anti-tripping buckling device, wherein the fastening screw body is arranged on the bottom wall of the limiting nut, and the outer anti-tripping thread is spirally arranged on the circumferential wall of the outer side of the fastening screw body; the adsorption type anti-tripping device is arranged in the fastening screw body, the frustum-shaped guiding piece is arranged on the bottom wall of the fastening screw body, and the magnetic type elastic pulling anti-tripping buckling device is arranged on the side wall of the limiting nut. The invention belongs to the technical field of anti-tripping screws, and particularly relates to the anti-tripping fastening screw, the mode of combining vacuum adsorption and elastic magnetic attraction is adopted, adsorption type fastening of the screw is achieved, the technical problem that the screw is prone to slipping is effectively solved, due to the arrangement of an adsorption type anti-tripping device, adsorption type fastening of the screw is achieved, and the weight of the screw is reduced, so that the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of anti-tripping screw rods, in particular to an anti-tripping fastening screw rod. Background technique [0002] The key parts of large-scale machinery need to use screws frequently. The stress on these key parts has the characteristics of large load and impact load. These characteristics make the screws easy to loosen or even slip, leading to accidents. Contents of the invention [0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an anti-tripping fastening screw, which adopts the combination of vacuum adsorption and elastic magnetic suction to realize the adsorption fastening of the screw, effectively solving the problem of The technical problem that the screw is easy to slip off, the installation of the adsorption anti-loosening device not only realizes the adsorption fastening of the screw, but also reduces the weight of the screw, ...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an anti-tripping fastening screw, which adopts the combination of vacuum adsorption and elastic magnetic suction to realize the adsorption fastening of the screw, effectively solving the problem of The technical problem that the screw is easy to slip off, the installation of the adsorption anti-loosening device not only realizes the adsorption fastening of the screw, but also reduces the weight of the screw, thereby reducing the production cost, and effectively solves the problem of poor fastening of the screw on the market. Slippage, complex structure and inconvenient maintenance

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