Adapter sleeve for preventing locking nut from loosening

Abstract

The utility model discloses an adapter sleeve for preventing a locking nut from loosening, which comprises a lower nut, a first thread groove is arranged in the lower nut, a thread cavity is arranged in the lower nut, a second thread groove is arranged in the thread cavity, the first thread groove is provided with a jacking hole which is arranged by taking the circle center as the center, and a jacking rod is movably connected in the jacking hole. The end, away from the jacking hole, of the jacking rod is fixedly connected with an arc-shaped plate, the arc-shaped plate is located in the threaded cavity, the upper end of the second threaded groove is in threaded connection with a threaded column, the upper end of the threaded column is fixedly connected with an upper nut, a third threaded groove is formed in the upper nut, and threaded holes with the circle center as the center are formed in the corresponding positions of the lower nut and the upper nut. The nut has the advantages that the nut is prevented from loosening in the using process, the buffer columns can be used for preventing the nut from loosening when the bolt vibrates up and down, the fixing structure of the whole equipment is firmer, and the using stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-locking nuts, in particular to a fixing sleeve for preventing a locking nut from loosening. Background Art

[0002] A lock nut is a nut that is screwed together with a bolt or screw for tightening. It is a component that must be used in all manufacturing machinery. The lock nut is a part that tightly connects mechanical equipment. Lock nuts and screws of the same specifications can be connected together through the inner thread. Commonly used anti-loosening methods include mechanical anti-loosening, riveting anti-loosening, friction anti-loosening, structural anti-loosening and punching anti-loosening.

[0003] Currently, when a nut is screwed into a bolt for use, the nut may become loose and fall off due to the vibration generated by the start-up of the equipment, thereby causing the bolt to become loose. This will cause the fixing structure of the entire equipment to become loose, resulting in poor stability. Utility Model Content

[0004] The utility model aims to provide a fastening sleeve for preventing a locking nut from loosening, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tightening sleeve for preventing a locking nut from loosening, comprising a lower nut, a first thread groove being provided in the lower nut, a thread cavity being provided in the lower nut, a second thread groove being provided in the thread cavity, a tightening hole being provided in the first thread groove with a center of a circle as the center, a tightening rod being movably connected in the tightening hole, an arc plate being fixedly connected at one end of the tightening rod away from the tightening hole, and the arc plate being located in the thread cavity.

[0006] Preferably, a threaded column is threadedly connected to the upper end of the second thread groove, an upper nut is fixedly connected to the upper end of the threaded column, and a third threaded groove is provided in the upper nut.

[0007] Preferably, threaded holes centered on the center of the circle are provided at corresponding positions of the lower nut and the upper nut.

[0008] Preferably, a buffer column is threadedly connected to the threaded hole.

[0009] Preferably, a buffer spring is fixedly connected to the lower end of the buffer column.

[0010] Compared with the prior art, the utility model has the following beneficial effects: during the process of threaded connection between the threaded column and the second thread groove in the threaded cavity, the arc plate is squeezed inwardly, so that the tightening rod on the inner side of the arc plate extends out from the tightening hole; when the threaded column and the second thread groove in the threaded cavity complete the threaded connection, the end of the tightening rod is pressed against the bolt to prevent the nut from loosening during use; the buffer spring at the lower end of the buffer column can greatly absorb kinetic energy to prevent the nut from loosening when the bolt encounters up and down vibrations, thereby making the fixing structure of the entire equipment more firm and improving the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the lower nut of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the upper nut of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the buffer column of the utility model.

[0015] In the figure: 1, lower nut; 2, first thread groove; 3, thread cavity; 4, second thread groove; 5, tightening hole; 6, tightening rod; 7, arc plate; 8, threaded column; 9, upper nut; 10, third thread groove; 11, threaded hole; 12, buffer column; 13, buffer spring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4 The utility model provides a technical solution: a tightening sleeve for preventing a locking nut from loosening, comprising a lower nut 1, a first thread groove 2 being arranged in the lower nut 1, a thread cavity 3 being arranged in the lower nut 1, a second thread groove 4 being arranged in the thread cavity 3, a tightening hole 5 being arranged with the center of a circle as the center on the first thread groove 2, a tightening rod 6 being movably connected in the tightening hole 5, an end of the tightening rod 6 away from the tightening hole 5 being fixedly connected to an arc plate 7, and the arc plate 7 is located in the thread cavity 3.

[0018] Furthermore, a threaded column 8 is threadedly connected to the upper end of the second thread groove 4, and an upper nut 9 is fixedly connected to the upper end of the threaded column 8. A third thread groove 10 is provided in the upper nut 9. The lower nut 1 is screwed into the bolt and tightened, and then the upper nut 9 is threadedly connected to the second thread groove 4 in the threaded cavity 3 through the threaded column 8, so that the lower nut 1 is tightly connected to the upper nut 9. At the same time, when the threaded column 8 is threadedly connected to the second thread groove 4 in the threaded cavity 3, the arc plate 7 is squeezed inwardly, so that the tightening rod 6 on the inner side of the arc plate 7 extends out from the tightening hole 5. When the threaded column 8 is threadedly connected to the second thread groove 4 in the threaded cavity 3, the end of the tightening rod 6 is pressed against the bolt.

[0019] Furthermore, threaded holes 11 centered on the center of the circle are provided at corresponding positions of the lower nut 1 and the upper nut 9 . The multiple groups of threaded holes 11 provided on the lower nut 1 and the upper nut 9 facilitate the connection of the buffer column 12 .

[0020] Furthermore, a buffer column 12 is connected to the inner thread of the threaded hole 11, and multiple groups of buffer columns 12 are used to longitudinally lock the lower nut 1 and the upper nut 9 through the threaded hole 11, thereby improving the firmness of the nut.

[0021] Furthermore, a buffer spring 13 is fixedly connected to the lower end of the buffer column 12. Since the buffer spring 13 can greatly absorb kinetic energy, it is used to prevent the nut from loosening when the bolt encounters up and down vibrations.

[0022] When the screw threaded connection is completed, the end of the tightening rod 6 is pressed against the bolt to prevent the nut from loosening during use. The multiple groups of threaded holes 11 on the lower nut 1 and the upper nut 9 are convenient for connecting the buffer columns 12. The multiple groups of buffer columns 12 are used to longitudinally lock the lower nut 1 and the upper nut 9 through the threaded holes 11, thereby improving the firmness of the nut. The buffer spring 13 at the lower end of the buffer column 12 can greatly absorb kinetic energy, which is used to prevent the nut from loosening when the bolt vibrates up and down.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tightening sleeve for preventing a locking nut from loosening, comprising a lower nut (1), characterized in that: The lower nut (1) is provided with a first thread groove (2), the lower nut (1) is provided with a thread cavity (3), the thread cavity (3) is provided with a second thread groove (4), the first thread groove (2) is provided with a tightening hole (5) arranged with the center of a circle as the center, the tightening hole (5) is movably connected with a tightening rod (6), the end of the tightening rod (6) away from the tightening hole (5) is fixedly connected with an arc plate (7), and the arc plate (7) is located in the thread cavity (3).

2. The adapter sleeve for preventing a locking nut from loosening according to claim 1, characterized in that: The upper end of the second thread groove (4) is threadedly connected to a thread column (8), the upper end of the thread column (8) is fixedly connected to an upper nut (9), and a third thread groove (10) is provided in the upper nut (9).

3. The adapter sleeve for preventing a locking nut from loosening according to claim 1, characterized in that: The lower nut (1) and the upper nut (9) are provided with threaded holes (11) arranged with the center of the circle as the center at corresponding positions.

4. The adapter sleeve for preventing a locking nut from loosening according to claim 3, characterized in that: The threaded hole (11) is internally threadedly connected with a buffer column (12).

5. The adapter sleeve for preventing a locking nut from loosening according to claim 4, characterized in that: The lower end of the buffer column (12) is fixedly connected with a buffer spring (13).

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