Torque control type nut and spanner special for same

Abstract

The invention discloses a torque control type nut. The torque control type nut comprises a nut inner bushing and a nut jacket, wherein the nut inner bushing is made of a material in which low-carbon steel is subjected to hot dip galvanizing on the surface, the nut jacket is made of a POM material, the outer border of the cross section of the nut jacket is in the shape of a regular polygon, the inner border of the cross section of the nut jacket is round, the inner wall face of the nut inner bushing is provided with a thread structure, the outer border of the cross section of the nut inner bushing is round, two symmetrical first ridges are arranged on the inner wall face of the nut jacket, at least one pair of grooves are formed in the outer wall face of the nut inner bushing, the first ridges are arranged on the axis of the nut inner bushing, the grooves are formed in the axis of the nut inner bushing, and each first ridge is arranged in the corresponding groove. A spanner special for the torque control type nut comprises a hand holding handle, wherein a first spanner head is arranged at one end of the hand holding handle, a second spanner head is arranged at the other end of the hand holding handle, a first sleeving hole is formed in the first spanner head, a second sleeving hole is formed in the second spanner head, the inner wall face of the first sleeving hole is a hole in the shape of a regular polygon, the second sleeving hole is a round hole, and a pair of second ridges are arranged on the inner wall face of the round hole. The torque control type nut and the spanner special for the torque control type nut have the advantages that bolts are prevented from getting loose, and the antitheft function is achieved.

Description

technical field [0001] The invention relates to a torque control type nut and a special wrench. Background technique [0002] With the rapid increase of electricity consumption, the load of transmission lines has increased significantly, especially during the peak summer period, when the lines are fully loaded or overloaded, resulting in heating problems in the drainage of tension towers and trench clamps and tension clamps , the overheating of the tension-resistant drainage plate will reduce the current carrying capacity, and the serious one will cause the drainage plate to burn out, resulting in a major accident. And with the long-term operation of the transmission line, the accidents caused by the heating of the strain relief plate have a tendency to increase year by year. Wherein, due to the heating of the tension drainage plate, the connection between the bolts and the nuts used to fix the tension drainage plate often becomes loose. On the one hand, this is caused by ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a torque control nut to solve the problems of bolt loosening due to insufficient torque, tensile permanent deformation and thread damage due to excessive tightening torque

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