CN212509163U

CN212509163U - Combined locknut

Info

Publication number: CN212509163U
Application number: CN202020913829.1U
Authority: CN
Inventors: 王水明
Original assignee: Shanxi Tongcai Industry and Trade Co Ltd
Current assignee: Shanxi Tongcai Industry and Trade Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-02-09
Anticipated expiration: 2030-05-27

Abstract

The utility model particularly relates to a modular locknut belongs to fastener technical field, and the problem that solve provides a combination formula locknut who improves the locking effect of nut, and the scheme of adoption is: the rear end of the first lock nut is sleeved inside the front end of the second lock nut, the rear end of the first lock nut comprises a first conical table body and a second conical table body, a plurality of notches are formed in the second conical table body at intervals around the axial direction of the second conical table body, the second conical table body is divided into a plurality of deformation strips through the notches, and friction layers are arranged on the inner surface and the outer surface of each deformation strip; the front end of the second lock nut is provided with a first conical counter bore and a second conical counter bore, the first conical counter bore is in threaded connection with the first conical table body, and the second conical counter bore is in interference fit with the second conical table body; the utility model discloses can guarantee the function of original nut fastening, can increase locking effect simultaneously again.

Description

Combined locknut

Technical Field

The utility model belongs to the technical field of the fastener, concretely relates to modular locknut.

Background

A nut is a nut, a component which is screwed together with a bolt or a screw to perform a fastening function, and all elements which are necessary for manufacturing machines. Locknuts have been widely used in various industrial fields in recent years because of their excellent fastening properties. The existing locknut generally has the condition of unsatisfactory locking effect, directly influences the normal operation and safety of equipment, and reduces the production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art exists not enough, provides a modular locknut, improves the locking effect of nut.

In order to solve the technical problem, the utility model discloses a technical scheme be: a combination locknut, comprising: the bolt comprises a first lock nut and a second lock nut, wherein one end, facing the head of the bolt, of the first lock nut and the second lock nut is set to be a front end, the front end of the first lock nut is an outer hexagon, the rear end of the first lock nut is sleeved inside the front end of the second lock nut, and the second lock nut is an outer hexagon; the rear end of the first lock nut comprises a first conical table body and a second conical table body, the rear end of the first conical table body is coaxially fixed with the front end of the second conical table body, a plurality of notches are arranged on the second conical table body at intervals along the axial direction of the second conical table body, the second conical table body is divided into a plurality of deformation strips through the notches, and friction layers are arranged on the inner surface and the outer surface of each deformation strip; the front end of No. two lock nuts is provided with a toper counter bore and No. two toper counter bores, a toper counter bore cover is located No. one toper stage body outside and rather than threaded connection, No. two toper counter bore covers and locates No. two toper stage body's outside, just No. two toper counter bores with No. two toper stage body interference fit.

The rear end of the second lock nut and the first lock nut are internally provided with lock nut holes which are in threaded connection with a threaded rod of a bolt.

The deformation strip is made of copper-zinc alloy.

A plurality of the notches are uniformly arranged.

The front end of the first lock nut and the second lock nut are provided with outer hexagons with the same size.

The using method comprises the following steps: the first lock nut is connected to a threaded rod of a bolt in a threaded mode, the front end of the first lock nut faces the head of the bolt, the front end of the second lock nut is sleeved outside a first conical table body and a second conical table body of the first lock nut, the second conical counter bore of the second lock nut is in interference fit with the second conical table body, the second lock nut and the first lock nut are required to be larger in force when in threaded connection and need to be used than a common lock nut, a notch is formed in the second conical table body, friction force between the second lock nut and the first lock nut is increased after installation is completed, a friction layer is arranged on the surface of a deformation strip, the nut is further locked, the deformation strip is made of copper-zinc alloy, and under the condition that the strength of the first lock nut is guaranteed, the deformation strip is locally deformed due to the interference fit with the second conical counter bore, and accordingly the nut is effectively prevented from loosening.

Compared with the prior art, the utility model following beneficial effect has.

One, the utility model discloses a first lock is female through a toper stage body and No. two conical counter bore threaded connection of No. two lock nuts, with No. two toper stage bodies and No. two conical counter bore interference fit, can guarantee the function that original nut fastened, can increase locking effect simultaneously again.

Second, the utility model discloses seted up the breach on No. two toper platforms bodies, increased the female and the female frictional force of a lock of No. two locks after the installation is accomplished, and the breach has given the space that the deformation strip warp, more is favorable to the installation.

Thirdly, the utility model discloses be provided with the frictional layer on the surface of strip warp, further increase the female and the female frictional force of a lock of No. two locks, lock this nut.

Fourth, the utility model discloses a deformation strip adopts the copper-zinc alloy, under the condition of guaranteeing the female intensity of a lock, deformation strip is owing to take place local deformation with No. two toper counter bore interference fit, and the effectual nut that prevents is not hard up.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is an axial sectional view of the combined locknut of the present invention.

Fig. 2 is a schematic sectional view of the first lock nut of the present invention.

Fig. 3 is a side view of the first lock nut of the present invention.

Fig. 4 is an enlarged view of the position a of the present invention.

Fig. 5 is a schematic sectional view of the second lock nut of the present invention.

Fig. 6 is a side view of the second lock nut of the present invention.

In the figure: the bolt is 1, the lock nut is 2, the conical table body is 3, the conical table body is 4, the conical table body is 5, the lock nut is two, the conical counter bore is 6, the conical counter bore is 7, the conical counter bore is 8, the notch is 8, and the deformation strip is 9.

Detailed Description

The following is a further description with reference to specific examples.

A combination locknut, comprising: the bolt comprises a first lock nut 2 and a second lock nut 5, wherein one ends, facing the head of a bolt 1, of the first lock nut 2 and the second lock nut 5 are set to be front ends, the front end of the first lock nut 2 is an outer hexagon, the rear end of the first lock nut 2 is sleeved inside the front end of the second lock nut 5, and the second lock nut 5 is an outer hexagon; the rear end of the first lock nut 2 comprises a first conical table body 3 and a second conical table body 4, the rear end of the first conical table body 3 is coaxially fixed with the front end of the second conical table body 4, a plurality of notches 8 are formed in the second conical table body 4 at intervals around the axial direction of the second conical table body, the second conical table body 4 is divided into a plurality of deformation strips 9 through the notches 8, and friction layers are arranged on the inner surface and the outer surface of each deformation strip 9; no. two the front end of lock nut 5 is provided with conical counter bore 7 and No. two conical counter bore 6, No. one conical counter bore 7 cover is located No. 3 outsides of toper stage body and rather than threaded connection, No. two conical counter bore 6 covers is located No. two the outside of toper stage body 4, just No. two conical counter bore 6 with No. two 4 interference fit of toper stage body.

The rear end of the second lock nut 5 and the first lock nut 2 are internally provided with lock nut holes which are in threaded connection with the threaded rod of the bolt 1.

The deformation strip 9 is made of copper-zinc alloy.

A plurality of the notches 8 are uniformly arranged.

The front end of the first lock nut 2 and the second lock nut 5 are provided with outer hexagons with the same size.

The using method comprises the following steps: the first lock nut 2 is connected to the threaded rod of the bolt 1 in a threaded manner, the front end of the first lock nut 2 faces the head of the bolt 1, the front end of the second lock nut 5 is sleeved on the outer portions of the first conical table body 3 and the second conical table body 4 of the first lock nut 2, because the second conical counter bore 6 of the second lock nut 5 is in interference fit with the second conical table body 4, the screw thread connection of the second lock nut 5 and the first lock nut 2 needs more strength than the use of the installation of a common lock nut, the second conical table body 4 is provided with a notch 8, after the installation is finished, the friction force between the second lock nut 5 and the first lock nut 2 is increased, a friction layer is arranged on the surface of the deformation strip 9 to further lock the nut, the deformation strip 9 adopts copper-zinc alloy, under the condition of ensuring the strength of the first lock nut 2, the deformation strip 9 is locally deformed due to interference fit with the second conical counter bore 6, so that the nut is effectively prevented from loosening.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, it will be appreciated that those skilled in the art, upon attaining an understanding of the foregoing may readily produce alterations to, variations of, and equivalents to these embodiments without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A combined locknut, comprising: the front end of the first lock nut (2) is an outer hexagon, the rear end of the first lock nut (2) is sleeved inside the front end of the second lock nut (5), and the second lock nut (5) is an outer hexagon; the rear end of the first lock nut (2) comprises a first conical table body (3) and a second conical table body (4), the rear end of the first conical table body (3) is coaxially fixed with the front end of the second conical table body (4), a plurality of notches (8) are formed in the second conical table body (4) at intervals around the axial direction of the second conical table body, the second conical table body (4) is divided into a plurality of deformation strips (9) through the notches (8), and friction layers are arranged on the inner surface and the outer surface of each deformation strip (9); the front end of No. two lock nuts (5) is provided with a toper counter bore (7) and No. two toper counter bores (6), toper counter bore (7) cover is located No. one toper stage body (3) outside and rather than threaded connection, No. two toper counter bores (6) cover are located the outside of No. two toper stage bodies (4), just No. two toper counter bores (6) with No. two toper stage bodies (4) interference fit.

2. The combined type locknut of claim 1, characterized in that the rear end of the second lock nut (5) and the first lock nut (2) are both provided with a lock nut hole in threaded connection with the threaded rod of the bolt (1).

3. A combined locknut according to claim 1 or 2, characterized in that the deformation strip (9) is made of copper-zinc alloy.

4. A combined locknut according to claim 3, characterized in that a plurality of said indentations (8) are evenly arranged.

5. The combined locknut of claim 4, characterized in that the front end of the first locking nut (2) and the second locking nut (5) have the same size hexagon.