CN212959459U

CN212959459U - Anti-loose nut

Info

Publication number: CN212959459U
Application number: CN202021965615.5U
Authority: CN
Inventors: 张智; 王立丁; 陈国强; 张冬阳; 王超
Original assignee: Ma'anshan Zhongjin Superhard Material Technology Development Co ltd
Current assignee: Ma'anshan Zhongjin Superhard Material Technology Development Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-04-13
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a locknut, which comprises a nut main body, wherein the middle part of the nut main body is provided with a pore passage with two through ends, the inner wall of the pore passage is provided with an internal thread, the nut main body is screwed on the outer surface of a shaft part through the internal thread, the inner wall of the nut main body is provided with an annular inner groove, the outer wall is provided with an annular outer groove, and the inner groove and the outer groove extend in opposite directions and are parallel to each other; the nut is characterized in that at least one group of screw holes extending along the central axis direction of the nut body are formed in the end face of the nut body, and anti-loosening bolts are screwed in the screw holes through threads and sequentially penetrate through the inner groove and the outer groove. The device has the characteristics of integrity and simple and convenient disassembly and assembly; structurally, the inner groove and the outer groove form an elastic body with preset strength and are connected through bolts, so that the anti-loosening function is realized.

Description

Anti-loose nut

Technical Field

The utility model relates to a nut technical field especially relates to a locknut.

Background

The nut is a nut, is screwed together with a bolt or a screw rod to play a fastening role, is specifically connected with the bolt through the inner threads, is an element which is necessary for all production and manufacturing machines and is divided into carbon steel, stainless steel, nonferrous metal and the like according to different materials, and is a part for tightly connecting mechanical equipment. However, in the use process, the vibration of mechanical equipment in operation often makes the fastener loosen, and the equipment is damaged if the vibration is light, and an accident occurs if the vibration is heavy, so that the locknut is required to be used for avoiding the fastener loosening.

Patent No. CN201821875607.4 discloses a locknut for automobile assembly, which comprises a main locknut and an auxiliary locknut, the main locknut and the auxiliary locknut are matched for use, so that a good anti-loosening effect can be achieved, the main locknut performs primary anti-loosening on the nut, the auxiliary locknut can perform secondary anti-loosening on the main locknut, no parts such as a spring washer and the like are arranged, so that the locknut can bear larger force without deformation, the locking effect is better, meanwhile, the threads arranged on the auxiliary locknut are opposite to the threads of the main locknut, so that the main locknut and the auxiliary locknut are mutually abutted, the nut can bear forces in different directions, and the auxiliary locknut is clamped in the auxiliary nut groove and is rotationally connected with the main locknut, and the main locknut and the auxiliary locknut are synchronously and reversely rotated during disassembly. Locknut in the above-mentioned patent need use two nuts to cup joint each other and constitute wholly, and the dismouting degree of difficulty is big, and it is poor to loosen the effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a locknut which has the characteristics of integrity and simple and convenient disassembly and assembly; structurally, the inner groove and the outer groove form an elastic body with preset strength, and the elastic body is connected with the outer groove through bolts, so that the realization of a locking function is ensured, and the problems in the prior art are solved.

In order to achieve the above object, the utility model provides a following technical scheme: a locknut comprises a nut body, wherein the middle part of the nut body is provided with a pore passage with two through ends, the inner wall of the pore passage is provided with an internal thread, the nut body is screwed on the outer surface of a shaft part through the internal thread, the inner wall of the nut body is provided with an annular inner groove, the outer wall of the nut body is provided with an annular outer groove, the inner groove and the outer groove extend oppositely and are parallel to each other, and the projections in the horizontal direction are partially overlapped; the nut is characterized in that at least one group of screw holes extending along the central axis direction of the nut body are formed in the end face of the nut body, and anti-loosening bolts are screwed in the screw holes through threads and sequentially penetrate through the inner groove and the outer groove.

Preferably, the shaft is a cylinder with an external thread formed on the outer surface, the shaft comprises a shaft with an external thread formed on the surface, a bolt and a stud, and the shaft is in locking connection with the internal thread of the pore passage through the external thread.

Preferably, the shaft member is inserted into a shaft hole of the half-joint.

Preferably, each set of said threaded holes is two in number and is symmetrical about the central axis of the nut body.

Preferably, adjacent seted up end hole and side opening between the screw, the end hole extends and is equipped with the opening on nut main part terminal surface along nut main part central axis direction, and the side opening extends and is equipped with the opening on nut main part lateral wall along nut main part diameter direction, all has seted up the screw thread on the inner wall of end hole and side opening to it has clamp bolt to connect soon through the screw thread.

Preferably, the distance between the central axis of the end hole and the central axis of the nut body is equal to the distance between the central axis of the screw hole and the central axis of the nut body, and the depth of the side hole is equal to the distance between the central axis of the end hole and the side wall of the nut body.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model has the advantages of integrity and simple disassembly and assembly; structurally, an elastic body with preset strength is formed by the inner groove and the outer groove, so that the realization of the anti-loosening function is ensured; end holes and side holes are respectively arranged on the end surface and the circumference and are connected with compression bolts, so that the nut has a flexible fastening mode; the circular ring-shaped structure and the characteristic of end face fastening and looseness prevention enable the nut to be capable of completing fastening and looseness prevention operations in a narrow space, the nut is prevented from loosening in the using process, the connection strength between the nut and the bolt and the connection tightness are improved, and further the operation safety of equipment is improved.

Drawings

FIG. 1 is a connection view of the nut body of the present invention;

FIG. 2 is a view of the structure of the nut body of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 according to the present invention;

fig. 4 is a sectional view taken along line B-B of fig. 2 according to the present invention.

In the figure: 1. a nut body; 11. an inner tank; 12. an outer tank; 13. an internal thread; 14. a duct; 15. a screw hole; 16. a lock bolt; 17. an end hole; 18. a side hole; 2. a shaft member; 3. and (5) half-connecting the hands.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the locknut includes a nut body 1, a hole 14 with two through ends is formed in the middle of the nut body 1, an internal thread 13 is formed on the inner wall of the hole 14, the nut body 1 is screwed on the outer surface of a shaft 2 through the internal thread 13, the shaft 2 is a cylinder with an external thread formed on the outer surface, the shaft 2 includes a shaft, a bolt and a stud with an external thread formed on the surface, and the shaft 2 is locked and connected with the internal thread 13 of the hole 14 through the external thread; the shaft part 2 is inserted into the shaft hole of the half-joint 3, the inner wall of the nut body 1 is provided with an annular inner groove 11, the outer wall of the nut body is provided with an annular outer groove 12, the inner groove 11 and the outer groove 12 extend oppositely and are parallel to each other, and the projections in the horizontal direction are partially overlapped; the end face of the nut main body 1 is provided with at least one group of screw holes 15 extending along the central axis direction of the nut main body 1, and each group of screw holes 15 is two in total and is symmetrical about the central axis of the nut main body 1; an end hole 17 and a side hole 18 are formed between adjacent screw holes 15, the end hole 17 extends along the central axis direction of the nut main body 1 and is provided with an opening on the end surface of the nut main body 1, the side hole 18 extends along the diameter direction of the nut main body 1 and is provided with an opening on the side wall of the nut main body 1, the inner walls of the end hole 17 and the side hole 18 are both provided with threads and are screwed with a compression bolt through the threads, the compression bolt in the end hole 17 applies extrusion force to the inner groove 11 and the outer groove 12 to reduce the gap between the inner groove 11 and the outer groove 12, so that the gap between the inner thread 13 of the nut main body 1 is enlarged, the connecting force between the inner thread 13 and the outer thread of the shaft 2 is improved, the compression bolt in the side hole 18 directly applies pressure to the connection part of the inner thread 13 of the; the distance between the central axis of the end hole 17 and the central axis of the nut body 1 is equal to the distance between the central axis of the screw hole 15 and the central axis of the nut body 1, and the depth of the side hole 18 is equal to the distance between the central axis of the end hole 17 and the side wall of the nut body 1; the screw hole 15 is screwed with a check bolt 16 through a screw thread, and the check bolt 16 sequentially penetrates through the inner groove 11 and the outer groove 12.

In summary, the following steps: the utility model has the advantages of integrity and simple disassembly and assembly; structurally, an elastic body with preset strength is formed by the inner groove 11 and the outer groove 12, so that the realization of the anti-loosening function is ensured; end holes 17 and side holes 18 are respectively arranged on the end surface and the circumference and are connected with compression bolts, so that the nut has a flexible fastening mode; the circular ring-shaped structure and the characteristic of end face fastening and looseness prevention enable the nut to be capable of completing fastening and looseness prevention operations in a narrow space, the nut is prevented from loosening in the using process, the connection strength between the nut and the bolt and the connection tightness are improved, and further the operation safety of equipment is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a locknut, includes nut main part (1), penetrating pore (14) in both ends are seted up at the middle part of nut main part (1), and internal thread (13) have been seted up to pore (14) inner wall, and nut main part (1) connects soon on the surface of axle piece (2) through internal thread (13), its characterized in that: an annular inner groove (11) is formed in the inner wall of the nut body (1), an annular outer groove (12) is formed in the outer wall of the nut body, the inner groove (11) and the outer groove (12) extend oppositely and are parallel to each other, and projections of the inner groove (11) and the outer groove (12) in the horizontal direction are partially overlapped; the nut is characterized in that at least one group of screw holes (15) extending along the central axis direction of the nut main body (1) are formed in the end face of the nut main body (1), check bolts (16) are screwed in the screw holes (15) through threads, and the check bolts (16) sequentially penetrate through the inner groove (11) and the outer groove (12).

2. The locknut of claim 1, wherein: the shaft piece (2) is a cylinder with an external thread formed on the outer surface, the shaft piece (2) comprises a shaft with an external thread formed on the surface, a bolt and a stud, and the shaft piece (2) is in locking connection with the internal thread (13) of the pore channel (14) through the external thread.

3. The locknut of claim 1, wherein: the shaft piece (2) is inserted into the shaft hole of the half-joint (3).

4. The locknut of claim 1, wherein: and each group of the screw holes (15) is two in total and is symmetrical about the central axis of the nut main body (1).

5. The locknut of claim 1, wherein: adjacent seted up end hole (17) and side opening (18) between screw (15), end hole (17) are followed nut main part (1) the central axis direction and are extended and be equipped with the opening on nut main part (1) terminal surface, and side opening (18) are followed nut main part (1) diameter direction and are extended and are equipped with the opening on nut main part (1) lateral wall, all seted up the screw thread on the inner wall of end hole (17) and side opening (18) to it has clamp bolt to connect soon through the screw thread.

6. The locknut of claim 5, wherein: the distance between the central axis of the end hole (17) and the central axis of the nut body (1) is equal to the distance between the central axis of the screw hole (15) and the central axis of the nut body (1), and the depth of the side hole (18) is equal to the distance between the central axis of the end hole (17) and the side wall of the nut body (1).