CN112145531A

CN112145531A - Stopping locknut

Info

Publication number: CN112145531A
Application number: CN202010917704.0A
Authority: CN
Inventors: 杨彪
Original assignee: Ocean Power Hainan Free Trade Zone New Energy Technology Co ltd
Current assignee: Ocean Power Hainan Free Trade Zone New Energy Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-12-29
Also published as: WO2022047965A1

Abstract

The invention discloses a backstop locknut, which comprises a nut body and a bolt body, and also comprises: and the limiting flat gasket is sleeved on the screw rod of the bolt body in a limiting manner and is used for limiting the unidirectional screwing rotation of the nut body. Different from a common nut, the locking force of the backstop locknut provided by the invention is not only used for locking the nut by virtue of pretightening force, but also used for locking a fastening point by virtue of a mechanical structure, so that the locknut only can move forwards but cannot move backwards. The purpose of locking and fastening is achieved. When the fastener needs maintenance, can 180 degrees rotations turn over the board, promote the pivot of being connected with the cam, make one-way connection latch break away from one-way spacing latch, with the instrument loosen the nut body can. Under the action of the latch, the nut cannot be loosened even if the nut is subjected to daily work vibration and environmental vibration. The fastener can safely and reliably play a role in fastening.

Description

Stopping locknut

Technical Field

The invention relates to the technical field of fastening connecting pieces, in particular to a retaining locknut.

Background

At present, fasteners composed of bolts and nuts are widely applied to numerous occasions such as science and technology, production, processing, tests and the like, mechanical equipment and instruments and meters, and the general nuts achieve the fastening effect by enabling the threaded buckles of the nuts to generate friction with the threaded buckles of the screws through pretightening force. When the vibration occurs, the vibration is transmitted to the nut, so that the nut is loosened to generate uncontrollable destructive force. The safety accidents are caused, the property and the personal life safety of the country are seriously threatened, and in order to prevent the accidents, the defects of the existing bolt and nut technology which is easy to loosen and fall off must be overcome.

Disclosure of Invention

In order to achieve the above purpose, the invention discloses a retaining locknut, which comprises a nut body and a bolt body, and further comprises:

and the limiting flat gasket is sleeved on the screw rod of the bolt body in a limiting manner and is used for limiting the unidirectional screwing rotation of the nut body.

Preferably, the position-limiting flat pad includes:

a cushion body;

the one-way limiting latch is annularly arranged at the end, close to the nut body, of the cushion body;

and the limiting latch is connected to the inner ring of the cushion body.

Preferably, a limiting opening is formed in a screw rod of the bolt body, the limiting opening is arranged in parallel along the length direction of the screw rod of the bolt body, and the limiting opening is matched with the limiting clamping teeth.

Preferably, the nut body includes:

the clamping jaw fixing grooves are circumferentially formed in the end, close to the one-way limiting clamping tooth, of the nut body;

the through hole is formed in the end, far away from the one-way limiting clamping tooth, of the nut body and communicated with the bottom of the clamping jaw fixing groove;

the clamping jaw seat is connected in the clamping jaw fixing groove in a sliding manner;

the one-way connecting latch is connected to the end, close to the one-way limiting latch, of the pawl seat, and the one-way connecting latch is matched with the one-way limiting latch;

the guide rod is vertically connected to the end, away from the one-way limiting latch, of the jaw seat, the end, away from the jaw seat, of the guide rod penetrates through the through hole, and is exposed out of the nut body and arranged away from the end, away from the one-way limiting latch, of the jaw seat;

the spring, the spring housing is located on the guide bar, spring one end is connected with jack catch fixed slot tank bottom, the spring other end is connected with the jack catch seat.

Preferably, the method further comprises the following steps:

and the lifting plate is of an L-shaped structure and is hinged to the end, far away from the claw seat, of the guide rod.

Preferably, the lifting plate member includes:

turning over a plate;

the two cams are vertically connected to one end of the turnover plate, and the end, far away from the claw seat, of the guide rod is hinged between the two cams through a rotating shaft.

Preferably, the number of the jaw fixing grooves is three.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a spacing flat pad according to the present invention;

FIG. 3 is a schematic view of a bolt body according to the present invention;

FIG. 4 is a schematic view of the one-way connection latch and the one-way limit latch of the present invention;

FIG. 5 is a schematic view showing the connection relationship between the pawl seat, the unidirectional connecting latch, and the guide bar according to the present invention;

FIG. 6 is a schematic view of the spring structure of the present invention;

FIG. 7 is a schematic view of a nut body according to the present invention;

FIG. 8 is a schematic view of a lifting plate member according to the present invention;

fig. 9 is a schematic view of the disconnection between the one-way connection latch and the one-way limit latch according to the present invention.

In the figure: 1. a nut body; 2. a bolt body; 3. limiting a flat cushion; 11. a claw fixing groove; 12. a through hole; 13. a pawl seat; 14. the clamping teeth are connected in a one-way mode; 15. a guide bar; 16. a spring; 17. turning over a plate; 18. a cam; 21. a limiting bayonet; 31. a cushion body; 32. one-way limiting latch; 33. and limiting latch.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

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

As shown in fig. 1 to 9, the anti-backing and anti-loose nut provided by the present embodiment includes a nut body 1 and a bolt body 2, and further includes:

and the limiting flat gasket 3 is sleeved on the screw rod of the bolt body 2 in a limiting manner and limits the unidirectional screwing rotation of the nut body 1.

In one embodiment, the position-limiting flat pad 3 includes:

a pad body 31;

the one-way limiting latch 32 is annularly arranged at the end, close to the nut body 1, of the cushion body 31;

the limiting latch 33 is connected to the inner ring of the cushion body 31, and the limiting latch 33 is connected to the inner ring of the cushion body 31.

In one embodiment, the bolt body 2 is provided with a limiting opening 21 on the screw, the limiting opening 21 is arranged in parallel along the length direction of the screw of the bolt body 2, and the limiting opening 21 is arranged to be matched with the limiting latch 33.

In one embodiment, the nut body 1 comprises:

the plurality of claw fixing grooves 11 are circumferentially formed in the end, close to the one-way limiting latch 32, of the nut body 1;

the through hole 12 is formed in the end, far away from the one-way limiting latch 32, of the nut body 1, and is communicated with the bottom of the latch fixing groove 11;

the jaw seat 13 is connected in the jaw fixing groove 11 in a sliding manner;

the one-way connecting latch 14 is connected to the end, close to the one-way limiting latch 32, of the jaw seat 13, and the one-way connecting latch 14 is matched with the one-way limiting latch 32;

the guide rod 15 is vertically connected to the end, far away from the one-way limiting latch 32, of the jaw seat 13, the end, far away from the jaw seat 13, of the guide rod 15 penetrates through the through hole 12 and is exposed out of the end, far away from the one-way limiting latch 32, of the nut body 1;

the spring 16 is sleeved on the guide rod 15, one end of the spring 16 is connected with the bottom of the jaw fixing groove 11, and the other end of the spring 16 is connected with the jaw seat 13.

In one embodiment, further comprising:

and the lifting plate is of an L-shaped structure and is hinged to the end, far away from the claw seat 13, of the guide rod 15.

In one embodiment, the lift plate member includes:

a flap 17;

and the two cams 18 are vertically connected to one end of the turnover plate 17, and the end, far away from the jaw seat 13, of the guide rod 15 is hinged between the two cams 18 through a rotating shaft.

In one embodiment, the number of the claw fixing grooves 11 is three, the through holes 12 are arranged in the claw fixing grooves 11 in equal number, the three through holes 12 are arranged at intervals of 120 degrees, and front and back angle changes of 1/3 teeth exist among the angles of the three through holes 12, so that the distance between the clamping teeth can be thinned, and the dead locking point is more accurate.

The working principle of the invention is as follows:

according to the anti-backing and anti-loose nut provided by the invention, the rotation of the limiting flat gasket 3 on the screw rod of the bolt body 2 is limited by the matching of the limiting latch 33 and the limiting opening 21, when the nut body 1 rotates on the screw rod of the bolt body 2, the limiting flat gasket 3 is pushed to move towards the head part close to the bolt body 2, the one-way connecting latch 14 on the pawl seat 13 slides on the one-way limiting latch 32 along the screwing direction of the nut body 1, when the limiting flat gasket 3 moves to the preset position, the spring 16 abuts against the one-way connecting latch 14 to be clamped in the one-way limiting latch 32, and the nut body 1 can only move forwards and cannot move backwards, so that the anti-loose effect is achieved. When the nut body 1 needs to be disassembled, an operator only needs to manually turn over the turning plate 17 by 180 degrees, the turning plate 17 drives the cam 18 to turn, the cam 18 rotates by taking the rotating shaft as the center, the convex end of the cam 18 is in surface contact with the nut body 1, then the guide rod 15 is lifted through the rotating shaft, the jaw seat 13 connected with the guide rod 15, the one-way connecting latch 14 connected with the jaw seat 13 moves towards the direction close to the bottom of the jaw fixing groove 11, the spring 16 contracts, the one-way connecting latch 14 is separated from the one-way limiting latch 32, and the nut body 1 can be disassembled by reversely rotating the nut body 1 at the moment.

The invention has the beneficial effects that:

the general nut is fastened by generating friction force between the screw thread of the nut and the screw thread of the screw through pretightening force. When vibration occurs, the vibration force is transmitted to the nut, causing it to loosen and produce an uncontrollable destructive force. Different from a common nut, the locking force of the backstop locknut provided by the invention is not only used for locking the nut by virtue of pretightening force, but also used for locking a fastening point by virtue of a mechanical structure, so that the locknut only can move forwards but cannot move backwards. The purpose of locking and fastening is achieved. When the fastener needs to be maintained, the turning plate 17 can be rotated by 180 degrees, the rotating shaft connected with the cam 18 is lifted, the one-way connecting latch 14 is separated from the one-way limiting latch 32, and the nut body 1 is loosened by using a tool. Under the action of the latch, the nut cannot be loosened even if the nut is subjected to daily work vibration and environmental vibration. The fastener can safely and reliably play a role in fastening.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. The utility model provides a stopping locknut, includes nut body (1) and bolt body (2), its characterized in that still includes:

the limiting flat gasket (3) is sleeved on the screw rod of the bolt body (2) in a limiting mode and is limited in the rotation of the nut body (1) in the single direction in a screwing mode.

2. The anti-back loose nut as claimed in claim 1, characterized in that said flat limit pad (3) comprises:

a pad body (31);

the one-way limiting latch (32) is annularly arranged at the end, close to the nut body (1), of the cushion body (31);

the limiting latch (33), the limiting latch (33) is connected with the inner ring of the cushion body (31).

3. The backstop locknut of claim 2, characterized in that, spacing opening (21) has been seted up on the screw rod of bolt body (2), spacing opening (21) along the parallel arrangement of the screw rod length direction of bolt body (2), spacing opening (21) adaptation spacing latch (33) setting.

4. A backstop locknut according to claim 2, characterized in that said nut body (1) comprises:

the clamping jaw fixing grooves (11) are formed in the circumferential direction of the nut body (1) and are close to the ends of the one-way limiting clamping teeth (32);

the through hole (12), the through hole (12) is arranged at the end, far away from the one-way limiting latch (32), of the nut body (1) and communicated with the bottom of the latch fixing groove (11);

the clamping jaw seat (13), the clamping jaw seat (13) is connected in the clamping jaw fixing groove (11) in a sliding mode;

the one-way connecting latch (14) is connected to the end, close to the one-way limiting latch (32), of the jaw seat (13), and the one-way connecting latch (14) is matched with the one-way limiting latch (32);

the guide rod (15) is vertically connected to the end, away from the one-way limiting latch (32), of the jaw seat (13), the end, away from the jaw seat (13), of the guide rod (15) penetrates through the through hole (12), and the end, away from the one-way limiting latch (32), of the nut body (1) is exposed;

the spring (16) is sleeved on the guide rod (15), one end of the spring (16) is connected with the bottom of the jaw fixing groove (11), and the other end of the spring (16) is connected with the jaw seat (13).

5. The back stop locknut of claim 4 further comprising:

the lifting plate is of an L-shaped structure and is hinged to the end, far away from the claw seat (13), of the guide rod (15).

6. The back stop locknut of claim 5 wherein the pull-up plate comprises:

a flap (17);

the two cams (18) are vertically connected to one end of the turnover plate (17), and the end, far away from the jaw seat (13), of the guide rod (15) is hinged between the two cams (18) through a rotating shaft.

7. The back-stop locknut of claim 4, characterized in that the jaw fixing groove (11) is provided with three.