CN113074180A

CN113074180A - Split nut

Info

Publication number: CN113074180A
Application number: CN202110188299.8A
Authority: CN
Inventors: 何天麟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-07-06

Abstract

The invention discloses a separating nut, which consists of two work fastening and backstop locknuts, wherein the work fastening nut is provided with anti-skid teeth on the force application end surface of the nut, a counter-rotation external thread boss is arranged on the non-force application end surface of the nut, and the backstop locknut is provided with a counter-rotation internal thread concave platform matched with the boss on the force application end surface of the nut, so that the separating nut which is installed at one time is assembled.

Description

Split nut

The technical field is as follows:

the invention relates to a fastener, in particular to a split nut.

Background art:

two nut pairs with the same type are widely adopted and installed in the mechanical industry, the loosening prevention effect is not obvious, only the loosening time of the nuts can be prolonged under the strong vibration environment, and the problem worthy of research is solved for improving the installation speed and the loosening prevention effect of the double nuts.

The invention content is as follows:

the invention provides a separate nut which is characterized in that two nuts are connected into a whole by using counter-rotating threads, and the two nuts are simultaneously screwed, installed and disassembled after the internal threads of an upper nut and a lower nut are aligned.

The technical problem to be solved is as follows:

the technical problem that the difficulty of installing the iron tower in high-altitude operation is reduced, the installation speed of the double nuts is increased, and the double nuts are fixed and prevented from loosening is solved.

The technical scheme is as follows:

disconnect-type nut, its characterized in that: the working fastening nut is provided with radioactive sawtooth type anti-skidding teeth with higher hardness on the acting end face of a common nut, and a boss of a cylindrical counter-rotating external thread is arranged on the non-acting end face; the back-stopping anti-loose nut is characterized in that a counter-rotating internal thread concave platform capable of containing the working fastening nut and the counter-rotating external thread boss is arranged on the forced end face of a common nut.

Further, firstly, the working fastening nut is reversely screwed into the retaining anti-loose nut concave platform, and after the two nuts are clamped, the upper internal thread and the lower internal thread are simultaneously tapped, so that a machining process which does not influence the installation speed and ensures complete positive rotation of the internal thread is formed.

The anti-loosening mechanism is as follows:

in order to enhance the anti-loosening effect of the separation type nut, anti-skidding teeth are arranged on the basis of convex-concave platform matching threads, threaded holes and screw rod matching threads and anti-loosening combination in opposite screwing directions, anti-skidding tooth tracks are extruded from a connecting piece mounting hole opening by means of pretightening force to be connected and fixed, the moving range of the separation type nut after installation is limited by gaps between positive and negative thread teeth, the stop anti-loosening nut moves forwards and separates, the concave platform counter-rotation matching thread is prevented from jacking, self-locking and anti-loosening by the screw hole positive-rotation matching thread, the concave platform counter-rotation matching threads extrude a working fastening nut, and the meshing force of the concave platform counter-rotation matching threads on the connecting piece hole opening and the.

The invention has the beneficial effects that:

according to the selection requirement of seriously researching the anti-loose characteristic of the anti-loose nut used on the upper part of the iron tower, which is provided by Beijing power grid company of 21 days 2.2month in 2020, a split nut which is installed once is developed to replace a nut-combining type double nut, the installation speed of the nut is improved, the construction and installation difficulty is reduced, the anti-loose characteristic of the nut is enhanced by adopting the combination of threads with opposite rotation directions, the red (cold) heading production process of the standard nut is met, and the manufacturing cost is reduced.

Description of the drawings:

FIG. 1 is a left side view of a working fastening nut;

FIG. 2 is a front view of the working fastening nut;

FIG. 3 is a front view of the check nut;

FIG. 4 is a right side view of the locking back locknut;

FIG. 5 is an assembled front view of the split nut;

FIG. 6 is a front view of the installation of the split nut

In FIGS. 1 to 6

1: a working fastening nut;

2: a backstop locknut;

3: a bolt;

4: a connector.

The specific implementation mode is as follows:

the invention is described in detail below with reference to the accompanying drawings:

example 1:

the split nut shown in fig. 1-5 is composed of a working fastening nut 1 and a backstop locknut 2.

Example 2:

as shown in figure 6 of the separating nut, will have the anti-skidding tooth to insert the 3 screw outcrop part screw in of 4 mounting holes of connecting piece to screw in, reuse wide mouth spanner will work fastening nut 1 and stopping locknut 2 screw in 3 screws in simultaneously, extrude anti-skidding tooth 1 with the surface of 4 mounting holes of connecting piece and mesh the trace can to anti-skidding tooth 1, if can back spin stopping locknut 2 again makes its separation, it is better to rely on positive and negative screw thread to extrude locking effect, it must screw up the internal thread of two upper and lower nuts and align to dismantle separating nut to dismantle back simultaneously.

Injecting; the wide mouth wrench shown in fig. 6 is: the widened steel plates are welded on the fixed clamping opening and the movable clamping opening of the common wrench, so that the working fastening nut and the backstop locknut can be clamped and fixed conveniently, and the speed of the forward-reverse rotation separation type nut is increased.

Example 3:

as shown in the separated nut shown in fig. 5 and fig. 6, an installation hole of a connecting piece 4 is extruded with an anti-skid tooth 1 print to be connected and fixed by virtue of pretightening force, the moving range of the installed separated nut shown in fig. 5 is limited by the clearance between positive and negative screw teeth, a backstop locknut 2 moves forwards and separates, a concave counter-rotating matching screw tooth is prevented from jacking, self-locking and locking by the positive-rotating matching screw tooth of the screw hole 2, the concave counter-rotating matching screw thread extrudes a working fastening nut 1 to increase the meshing force to the hole of the connecting piece 4 and the friction force of a fastening supporting surface.

The above examples do not limit the invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the scope of protection of the invention.

Claims

1. Disconnect-type nut, its characterized in that: the working fastening and backstop locknut is characterized by comprising a working fastening and backstop locknut, wherein the working fastening nut is provided with anti-skid teeth with higher hardness on an acting end face, and a cylindrical counter-rotating external thread boss is arranged on a non-acting end face; the stopping locknut is provided with a counter-rotating internal thread concave platform matched with the boss on the force application end surface.

2. The breakaway nut of claim 1, wherein: the pre-tightening force is used for connecting and fixing the anti-skidding teeth and the orifice of the connecting piece, and the rotation directions of the convex-concave platform, the screw hole and the screw rod matched threads are opposite, so that the positive and negative threads can be extruded in opposite directions to realize self-locking and anti-loosening no matter the retaining anti-loosening nut moves forwards and backwards.

3. A split nut as claimed in claims 1 and 2, wherein: the working fastening is aligned with the internal thread of the backstop locknut, and the spanner is used for simultaneously carrying out forward-rotation fastening installation and reverse-rotation loosening detachment.

4. A split nut as claimed in claims 1 and 2 and 3, wherein: and reversely screwing the boss into the concave table, clamping the opposite sides of the two nuts at the same time, and tapping to achieve the processing procedure of consistent upper and lower internal threads.