CN215890748U

CN215890748U - A V-pin fixed anti-loosening bolt structure

Info

Publication number: CN215890748U
Application number: CN202121113551.0U
Authority: CN
Inventors: 顾建; 刘绪良; 刘胜春; 司佳钧; 李冬青; 蔡松林; 刘鹏; 刘臻; 张暕; 张雪松; 孙娜; 刘龙; 张军; 齐翼; 牛海军; 张昭
Original assignee: State Grid Corp of China SGCC; China Electric Power Research Institute Co Ltd CEPRI
Current assignee: State Grid Corp of China SGCC; China Electric Power Research Institute Co Ltd CEPRI
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-02-22
Anticipated expiration: 2031-05-24

Abstract

A V-shaped pin fixed type anti-loose bolt structure comprises a bolt, a nut matched with the bolt and a deformable V-shaped pin; the middle section of the V-shaped pin penetrates through a hole formed in the bolt and the screw rod, and two ends of the V-shaped pin are fixed in the holes which are formed in the nut and are symmetrical to each other. The V-shaped pin fixed type anti-loosening bolt structure provided by the utility model has good anti-loosening performance and good economical efficiency, and has important significance for ensuring stable operation of a line.

Description

Fixed check bolt structure of V type round pin

Technical Field

The utility model relates to the technical field of mechanical engineering, in particular to a V-shaped pin fixed type check bolt structure.

Background

The fastening bolt is a main connecting structure in the power transmission line and is used for realizing the detachable connection of each key component. In actual service working conditions, the complex service environment easily causes the bolt to loosen, thereby bringing great challenges to the safety of the line. The existing line service bolts mainly have two types: (1) the bolt is fastened by double nuts matched with the gasket, and (2) the bolt is prevented from loosening by a cotter pin or a closed pin. The double-nut fastening bolt is easy to loosen, and the split pin or the closed pin only can prevent the bolt from falling off, cannot play a role in preventing looseness and is easy to fall off.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of poor anti-loosening performance of the existing anti-loosening bolt, the utility model provides a V-shaped pin fixed type anti-loosening bolt structure which comprises a bolt, a nut matched with the bolt and a deformable V-shaped pin;

the middle section of the V-shaped pin penetrates through a hole formed in the bolt and the screw rod, and two ends of the V-shaped pin are fixed in the holes which are formed in the nut and are symmetrical to each other.

Preferably, the number of the holes on the nut is multiple groups;

each group comprises two symmetrically arranged holes;

the multiple groups of holes are uniformly distributed at equal angles by taking the axis of the nut as a central line.

Preferably, the nut comprises the nut body and at least two sector plates;

the fan-shaped plates are integrally formed on the outer peripheral side of one end of the nut and are symmetrically arranged;

the fan-shaped plate is provided with a hole.

Preferably, the number of the sector plates is multiple;

each group comprises two symmetrically arranged fan-shaped plates;

the multiple groups of fan-shaped plates are uniformly distributed at equal angles by taking the axis of the nut as a central line;

the V-shaped pin is arranged in the holes in one group of the sector plates in a penetrating mode.

Preferably, the number of the groups of the sector plates is not less than three.

Preferably, the hole on the bolt is opened along the diameter direction of the bolt.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model provides a V-shaped pin fixed type anti-loose bolt structure which comprises a bolt, a nut matched with the bolt and a deformable V-shaped pin, wherein the nut is fixed on the bolt; the middle section of the V-shaped pin penetrates through a hole formed in the bolt and the screw rod, and two ends of the V-shaped pin are fixed in the holes which are formed in the nut and are symmetrical to each other. The V-shaped pin fixed type anti-loosening bolt structure provided by the utility model has good anti-loosening performance and good economical efficiency, and has important significance for ensuring stable operation of a line.

2. The utility model provides a V-shaped pin fixed type anti-loosening bolt structure, wherein holes are formed in a sector plate, so that the V-shaped pin can be conveniently punched, and a nut main body is not damaged.

Drawings

FIG. 1 is a schematic view of the overall structure of the assembled V-shaped pin fixed type anti-loose bolt structure of the utility model;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

FIG. 3 is a schematic view of a nut provided with sector plates;

wherein: 1. a nut; 2. a bolt; 21. a bolt shank; 22. a bolt head; 3. an assembly member; 4. a sector plate; 5. a V-shaped pin; 51. a positioning section; 52. a connecting section; 53. a limiting section.

Detailed Description

The utility model discloses a V-shaped pin fixed type anti-loosening bolt structure which has good anti-loosening performance and good economical efficiency and has important significance for ensuring stable operation of a line.

Example 1

A V-shaped pin fixing type anti-loose bolt structure is shown in figures 1 and 2 and comprises a bolt 2, a nut 1 and a V-shaped pin 5.

The bolt 2 comprises a bolt rod 21 and a bolt head 22 which are integrally arranged, and an external thread is arranged on the bolt rod 21. The end, far away from the bolt head 22, of the bolt rod 21 is provided with a hole for penetrating the V-shaped pin 5, the aperture of the hole is 2mm-5mm, the hole is formed along the diameter direction of the bolt rod 21, and the distance between the hole and the end, far away from the bolt head 22, of the bolt rod 21 is at least three thread pitch lengths.

The nut 1 is provided with a threaded hole matched with the external thread on the bolt rod 21, one end, far away from the bolt head 22, of the nut 1 is provided with a plurality of groups of holes used for penetrating the V-shaped pin 5 at equal angles along the nut 1, each group comprises two symmetrically arranged holes, the aperture of each hole is 2mm-5mm, the number of the groups of the holes is not limited, the embodiment takes the three groups of holes formed in the nut 1 as an example, and the three groups of holes are uniformly distributed at equal angles by taking the axis of the nut 1 as a central line.

The V-shaped pin 5 can deform and is formed by bending a semi-cylindrical rod piece with a section of 2-5 mm at the prefabrication stage. After the installation, the V-shaped pin 5 includes a positioning section 51, a connecting section 52 and a limiting section 53, the positioning section 51 is inserted into a hole on the bolt rod 21, the limiting section 53 is bent in the reverse direction after passing through the hole on the nut 1, so as to prevent the V-shaped pin 5 from being separated from the nut 1, and the connecting section 52 is inserted into the hole on the nut 1, and is used for connecting the positioning section 51 and the limiting section 53.

The specific implementation method comprises the following steps: when the assembly part 3 needs to be installed, firstly, the assembly part 3 is arranged on the bolt rod 21 of the bolt 2 in a penetrating way; secondly, the nut 1 is connected to the bolt rod 21 through threads, and the nut 1 is abutted with the assembly 3; then, the arc-shaped surface of the prefabricated V-shaped pin 5 is far away from the bolt head 22 and is arranged in a hole in the bolt rod 21 in a penetrating manner; thirdly, two ends of the V-shaped pin 5 are respectively arranged in symmetrical holes on the nut 1 in a penetrating manner; finally, both ends of the V-shaped pin 5 are bent in the direction of the nut 1, thereby preventing the V-shaped pin 5 from being separated from the nut 1.

Example 2

The utility model also provides a V-shaped pin fixed type anti-loose bolt structure, as shown in fig. 3, the structure can also be set as follows: the nut 1 comprises a nut 1 body and sector plates 4, wherein a plurality of groups of sector plates 4 are integrally arranged on the outer peripheral side of one end, away from the bolt head 22, of the nut 1 body, and each group of sector plates 4 comprises two symmetrically arranged sector plates 4. Each sector plate 4 is provided with a hole for penetrating the V-shaped pin 5, the aperture of the hole is 2mm-5mm, and the distance between the hole and the external section of the nut 1 is not less than 1.5 mm. The number of the groups of the sector plates 4 is not limited, in the embodiment, three groups of the sector plates 4 are taken as an example, and the three groups of the sector plates 4 are respectively and uniformly distributed at equal angles by taking the axis of the nut 1 as a central line.

The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.

Claims

1. A V-pin fixing type anti-loosening bolt structure, characterized in that it comprises a bolt (2), a nut (1) used in conjunction with the bolt (2) and a deformable V-shaped pin (5);

The middle section of the V-shaped pin (5) passes through the hole provided on the screw rod of the bolt (2), and the two ends are fixed to the mutually symmetrical holes provided on the nut (1).

2. A V-pin fixed anti-loosening bolt structure according to claim 1, characterized in that: the number of holes on the nut (1) is multiple groups;

Each group includes two symmetrically arranged holes;

The multiple groups of holes are equally angularly distributed with the axis of the nut (1) as the center line.

3. A V-pin fixed locking bolt structure according to claim 1, wherein the nut (1) comprises a main body of the nut (1) and at least two sector plates (4);

The fan-shaped plate (4) is integrally formed on the outer peripheral side of one end of the main body of the nut (1), and is symmetrically arranged;

The fan-shaped plate (4) is provided with holes.

4. A V-pin fixed anti-loosening bolt structure according to claim 3, characterized in that: the number of the sector plates (4) is multiple groups;

Each group includes two symmetrically arranged said sector plates (4);

The multiple groups of sector plates (4) are evenly distributed at equal angles with the axis of the nut (1) as the center line;

The V-shaped pins (5) pass through the holes on one group of the fan-shaped plates (4).

5 . The V-pin fixed anti-loosening bolt structure according to claim 4 , wherein the number of groups of the fan-shaped plates ( 4 ) is not less than three groups. 6 .

6 . The V-pin fixed anti-loosening bolt structure according to claim 1 , wherein the holes on the bolt ( 2 ) are opened along the diameter direction of the bolt ( 2 ). 7 .