CN216278920U

CN216278920U - Combined anti-loosening thread device

Info

Publication number: CN216278920U
Application number: CN202122324203.4U
Authority: CN
Inventors: 肖学军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-12
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a combined anti-loose thread device, which comprises: the nut comprises an outer nut and an inner nut, wherein the outer nut is provided with a tapered hole along the axial direction, and the tapered hole is provided with a thread part A; the inner nut is penetrated by a through hole extending along the axial direction; the inner side of the through hole is provided with a thread part C; the outer side of the through hole is provided with a thread part B, the end face of the thread part B is provided with a locking groove, and the thread part A is in threaded connection with the thread part B; the utility model solves the problem that the equipment threaded connecting piece in the engineering machinery is easy to fall off; the utility model has the advantages of quick disassembly and assembly and improved maintenance efficiency; through extrusion deformation, reach locking effect, locking effectual is difficult for appearing not hard up effect.

Description

Combined anti-loosening thread device

Technical Field

The utility model relates to the field of anti-loosening threads, in particular to a combined anti-loosening thread device.

Background

In the industrial installation process, the phenomenon of thread loosening often occurs, and because in engineering machinery, the working environment of engineering equipment is complex, the working condition is very bad; the loosening of the threaded connecting piece often occurs, the normal operation of equipment is seriously influenced, and casualties can be seriously caused; in the prior art, for example: GB/T6172.2-2000 nonmetal insert hexagonal locking thin nut, GB/T6185.1-20002 type full metal hexagonal locking nut and the like, but all achieve locking and looseness prevention by destroying the inlay inside the nut in the screwing process, are disposable and cannot be repeatedly used. In order to solve the above problems, a combined type anti-loosening screw device is proposed.

Disclosure of Invention

The utility model aims to solve the problems and provides a combined type anti-loose thread device.

The specific scheme of the utility model is as follows: a combination check thread device comprising: the nut comprises an outer nut and an inner nut, wherein the outer nut is provided with a tapered hole along the axial direction, and the tapered hole is provided with a thread part A; the inner nut is penetrated by a through hole extending along the axial direction; the inner side of the through hole is provided with a thread part C; and a thread part B is arranged on the outer side of the through hole, a locking groove is formed in the end face of the thread part B, and the thread part A is in threaded connection with the thread part B.

Preferably, a connecting member is added between the outer nut and the inner nut, the connecting member has a threaded portion D forming an external thread, a nut head a is provided on one side of the threaded portion D, the nut head a is penetrated by a through hole extending along a direction of a rotation center line of the connecting member, and a threaded portion E forming an internal thread is provided in the through hole on one side of the threaded portion D; and a locking groove is formed in one side of the thread part D, a tapered hole is formed in one side of the nut head A, and the tapered hole is provided with a thread part F forming internal threads.

Preferably, the inner nut is a double-headed nut, a threaded portion H is arranged on the other side of a threaded portion B of the inner nut, a transition section is arranged between the threaded portion B and the threaded portion H, and a locking groove is formed in the threaded portion H; an outer nut is additionally arranged on the thread part H and used for improving the anti-loosening capacity.

Preferably, a nut head C is additionally arranged on the transition section, so that a wrench can conveniently twist.

Preferably, a step is provided outside the rotation center of the outer nut, and the step is used for improving the strength of the thread part a.

Preferably, a disassembly handle is arranged on the outer side of the rotation center of the outer nut and used for conveniently disassembling the outer nut.

Preferably, one side of the threaded part B is provided with a nut head B, and the nut head B is a regular hexagonal frustum pyramid and is convenient to screw.

Preferably, a through hole is formed at one side of the tapered hole, and a screw portion G having an internal thread is formed in the through hole.

Preferably, the thread part B, the thread part E and the thread part G all have internal threads with the same turning direction and consistent specifications.

Preferably, more than two locking grooves are formed in the threaded portion B, the threaded portion D and the threaded portion F, the threaded portion at the groove is deformed by the extrusion of the tapered hole, so that the inner diameter is reduced, and the effect of improving the locking capacity is achieved.

The utility model has the following beneficial effects: 1. the structure is simple, and the operation is convenient; 2. the quick disassembly and the quick assembly can improve the maintenance efficiency; 3. through extrusion deformation, reach locking effect, locking effectual is difficult for appearing not hard up.

Drawings

FIG. 1 is a schematic structural view of an outer nut;

FIG. 2 is a schematic structural diagram of a first scheme of the inner nut;

FIG. 3 is a schematic view of a structure of a connecting member;

FIG. 4 is a schematic structural diagram of a second scheme of the inner nut;

FIG. 5 is a schematic structural diagram of a third embodiment of the inner nut;

FIG. 6 is a first embodiment of the present invention;

FIG. 7 is a second embodiment of the present invention;

FIG. 8 is a third embodiment of the present invention;

FIG. 9 is a fourth embodiment of the present invention;

FIG. 10 is a schematic view of a first locking groove grooving of the present invention;

FIG. 11 is a schematic view of a second locking groove grooving of the present invention;

in the figure: 100-external nut, 200-connecting part, 300-workpiece, 1-thread part A, 2-thread part B, 3-thread part C, 4-locking groove, 5-thread part D, 6-thread part E, 7-nut head A, 8-thread part F, 9-thread part H, 10-transition section, 11-nut head C, 12-nut head B, 13-thread part G, 14-step, 15-removal handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model, in particular, with reference to FIGS. 1-11

In one embodiment, a combined type anti-loosening threaded device comprises: an outer nut 100 and an inner nut, wherein the outer nut 100 is provided with a tapered hole along the axial direction, and the tapered hole is provided with a thread part A1; the inner nut is penetrated by a through hole extending along the axial direction; the inner side of the through hole is provided with a thread part C3; the through hole is provided with a thread part B2 on the outer side, a nut head B12 is arranged on one side of the thread part B2, a locking groove 4 is formed on the end face of the thread part B2, and the thread part A1 is in threaded connection with the thread part B2.

The rear side of the thread part A1 of the outer nut 100 is provided with a thread part G13, the outer side of the thread part A1 of the outer nut 100 is provided with a step 14, and the thickness of the step 14 is used for improving the strength of the thread part A1.

The method comprises the following specific implementation steps:

the method comprises the following steps: in this embodiment, the workpiece 300 is first screwed to the one-way grooved inner nut;

step two: then the outer nut 100 is in threaded connection with the inner nut with the unidirectional slot in the embodiment;

step three: fixing a nut head B12 by a spanner, and knocking the disassembly handle 15 of the outer nut 100 to tightly connect the outer nut 100 and the inner nut; the threaded part B2 of the inner nut, which is provided with the locking groove 4, is pressed by the threaded part A1 under the action of the threaded part A1 in the tapered hole, so that the workpiece 300 is locked and prevented from loosening. Refer to fig. 6.

In a second embodiment, a combination type anti-loosening threaded device comprises: an outer nut 100 and an inner nut, wherein the outer nut 100 is provided with a tapered hole along the axial direction, and the tapered hole is provided with a thread part A1; the inner nut is penetrated by a through hole extending along the axial direction; the inner side of the through hole is provided with a thread part C3; a screw portion B2 is provided outside the through hole, a locking groove 4 is provided on an end surface of the screw portion B2, a connection member 200 is provided between the outer nut 100 and the inner nut, the connection member 200 has a screw portion D5 forming an outer screw, a nut head a7 is provided on a side of the screw portion D5, the screw portion D5 is penetrated by a through hole extending along a direction of a rotation center line of the connection member 200, and a screw portion E6 forming an inner screw is provided in the through hole on a side of the screw portion D5; the locking groove 4 is opened on the side of the thread part D5, and the tapered hole is formed on the side of the nut head A7 and is provided with a thread part F8 forming internal thread.

The thread part D5 is in threaded connection with the thread part A1, the thread part F8 is in threaded connection with the thread part B2, and the thread part D5 is pressed through the thread part A1; the threaded portion F8 presses the threaded portion D5, achieving a double-contracting effect.

The method comprises the following specific operations: in this embodiment, the connecting part 200 is additionally arranged between the outer nut 100 and the one-way grooved inner nut, the workpiece 300 is in threaded connection with the one-way grooved inner nut firstly, then the connecting part 200 is in threaded connection with the inner nut, the threaded part B2 of the inner nut is extruded by the threaded part F8 of the connecting part 200, the workpiece 300 is locked to prevent looseness, and then the threaded part a1 of the outer nut 100 is in threaded connection with the threaded part D5 of the connecting part 200, so that the threaded part a1 extrudes the threaded part D5 of the locking groove 4, double locking to prevent looseness is realized, and the double locking is firmer and more reliable. Refer to FIG. 7

In a third embodiment, a combination lock screw device comprises: an outer nut 100 and an inner nut, wherein the outer nut 100 is provided with a tapered hole along the axial direction, and the tapered hole is provided with a thread part A1; the inner nut is penetrated by a through hole extending along the axial direction; the inner side of the through hole is provided with a thread part C3; the through hole is provided with a thread part B2 outside, and the end face of the thread part B2 is provided with a locking groove 4.

The inner nut is a double-headed nut, a thread part H9 is arranged on the other side of a thread part B2 of the inner nut, a transition section 10 is arranged between the thread part B2 and the thread part H9, and a locking groove 4 is formed in the thread part H9; an outer nut 100 is additionally arranged on the threaded part H9 and used for improving the anti-loosening capacity.

The operation method comprises the following steps: in this embodiment, the inner nut is changed into a double-headed inner nut, and both ends of the inner nut are provided with the locking grooves 4, the outer nuts 100 are mounted on both ends of the double-headed inner nut (not screwed) in this embodiment, the workpiece 300 is mounted in this embodiment, the outer nuts 100 on both ends of the double-headed inner nut are screwed, and the workpiece 300 is locked by pressing the threads of the double-headed inner nut, both ends of which are provided with the grooves, through the outer nuts 100 on both ends, thereby achieving double locking.

In the fourth embodiment, referring to fig. 9, in the third embodiment, on the basis of the third embodiment, a nut head C11 is added to the middle part of the double-ended inner nut, and a nut head C11 is added to facilitate disassembly.

In addition, the utility model is suitable for the threads in all Chinese markets, such as trapezoidal threads, triangular threads, rectangular threads, worm threads, common threads, English system threads and the like. The locking groove 4 opened by the open groove is preferably two grooves or three grooves, the depth of the open groove is 1/2 of the length of the thread, and the disassembly handle 15 can be in a hexagonal frustum pyramid shape or an octagonal frustum pyramid shape; refer to fig. 10 and 11.

Claims

1. A combination check thread device comprising: outer nut, interior nut, its characterized in that: the outer nut is provided with a tapered hole along the axial direction, and the tapered hole is provided with a thread part A; the inner nut is penetrated by a through hole extending along the axial direction; the inner side of the through hole is provided with a thread part C; and a thread part B is arranged on the outer side of the through hole, a locking groove is formed in the end face of the thread part B, and the thread part A is in threaded connection with the thread part B.

2. A combined lock screw device according to claim 1, wherein: a connecting part is additionally arranged between the outer nut and the inner nut, the connecting part is provided with a thread part D forming an external thread, a nut head A is arranged on one side of the thread part D, the nut head A is penetrated by a through hole extending along the direction of the rotation center line of the connecting part, and a thread part E forming an internal thread is arranged in the through hole on one side of the thread part D; and a locking groove is formed in one side of the thread part D, a tapered hole is formed in one side of the nut head A, and the tapered hole is provided with a thread part F forming internal threads.

3. A combined lock screw device according to claim 1, wherein: the inner nut is a double-headed nut, a threaded part H is arranged on the other side of a threaded part B of the inner nut, a transition section is arranged between the threaded part B and the threaded part H, and a locking groove is formed in the threaded part H; an external nut is additionally arranged on the thread part H.

4. A combined lock screw device according to claim 3, wherein: and a nut head C is additionally arranged on the transition section.

5. A combined lock screw device according to claim 1, wherein: and a step is arranged on the outer side of the rotation center outside the outer nut.

6. A combined lock screw device according to claim 1, wherein: and a disassembly handle is arranged on the outer side of the rotation center of the outer nut.

7. A combined lock screw device according to claim 1, wherein: and one side of the threaded part B is provided with a nut head B, and the nut head B is a regular hexagonal frustum pyramid.

8. A combined lock screw device according to claim 1, wherein: and a through hole is formed on one side of the conical hole, and a thread part G with internal threads is formed on the through hole.

9. A combined lock screw device according to claim 1, wherein: the thread part B, the thread part E and the thread part G are all provided with internal threads with the same turning direction and consistent specifications.

10. A combined lock screw device according to claim 1, wherein: more than two locking grooves are formed in the threaded portion B, the threaded portion D and the threaded portion F, the threaded portion at the groove is deformed through extrusion of the taper hole, and the inner diameter is further reduced.