Mounting and dismounting device of double-end stud and method for mounting and dismounting double-end stud

Abstract

The invention discloses a mounting and dismounting device of a double-end stud and a method for mounting and dismounting the double-end stud, and belongs to the field of mounting of the double-end stud. The mounting and dismounting device comprises an outer sleeve, a mandrel, a square nut, a mandrel driving assembly and a square nut fixing piece, wherein a central hole is formed in the inner upper end of the outer sleeve, and a square hole is formed in the lower end of the outer sleeve; the mandrel is assembled at the inner upper end of the outer sleeve through the central hole; the square hole for adapting a wrench is formed in the top of the mandrel, and an ejector head for tightly pressing against the end face of the double-end stud is arranged at the bottom of the mandrel; the square nut is assembled at the inner lower end of the outer sleeve through the square hole; the mandrel driving assembly is connected with the outer sleeve and the mandrel, and the outer sleeve and the mandrel do relative rotation so that the mandrel is moved downwards relative to the outer sleeve; and the square nut fixing piece is arranged on the side wall of the lower end of the outer sleeve corresponding to the square nut. According to the mounting and dismounting device of the double-end stud and the method for mounting and dismounting the double-end stud disclosed by the invention, a series of problems caused by concentrating the stress on screwed threads of double nuts and the double-end stud through adoption of an existing tool can be solved, and the device has the characteristics that the threads are difficultly damaged, the double-end stud cannot be loosened back, and integration of functions of mounting and dismounting the double-end stud is realized.

Description

technical field [0001] The invention belongs to the installation field of double-ended studs, and in particular relates to a loading and unloading device for double-ended studs and a method for loading and unloading double-ended studs. Background technique [0002] At present, when assembling and disassembling double-ended studs, the double-nut tightening method is usually used. The specific operation is: install two nuts on the thread at one end of the double-ended stud, and clamp them together so that the double-nuts and the double-ended studs There is no relative rotation of the column; when assembling the double-ended stud, rotate the upper nut to drive the double-ended stud to rotate and tighten; when disassembling the double-ended stud, rotate the lower nut to drive the double-ended stud to rotate and unscrew; In the case of double nuts, fix the lower nut and loosen the upper nut so that the double nuts are no longer locked together and can be removed separately. This...

AI Technical Summary

Problems solved by technology

[0006] The invention proposes a loading and unloading device for double-ended studs and a method for loading and unloading double-ended studs, which solves the problem of stress concentration on the screw threads of double nuts and double-ended studs when the existing tools are assembled and disassembled. There is no guarantee that the double nuts can transmit the required torque to the double-ended studs, and the problem that the tightened double-ended studs may be loosened when the double nuts are removed, and the applied tightening torque can be completely Acting on the double-ended studs, the thread is not easy to be damaged, and the double-ended studs will not loosen when the tooling is removed, and it integrates the functions of assembling, disassembling the double-ended studs and replacing the square nut.

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