High-strength anti-loosening bolt with self-locking function

Abstract

The utility model relates to the field of high-strength bolts, in particular to a high-strength anti-loosening bolt with a self-locking function, which comprises a high-strength bolt. And the tooth machine is arranged on the periphery below the high-strength bolt and used for preventing looseness. According to the high-strength anti-loosening bolt with the self-locking function, due to the arrangement of the self-locking mechanism, the self-locking function can be achieved for the high-strength bolt and the nut, meanwhile, the anti-loosening effect is achieved, the high-strength bolt penetrates through the position where the high-strength bolt needs to be installed in a threaded mode, and then the high-strength bolt is sleeved with the gasket; after the nut is screwed in place, a hexagonal screwdriver is used for being aligned with a hexagonal groove in the rotating head, then the rotating head is rotated to drive the threaded rod to rotate, and the threaded rod is movably connected with the push block, so that the push block is pushed to extrude the limiting blocks on the two sides to stretch out of the high-strength bolt; the limiting block is inserted into the limiting groove in the nut, and the self-locking anti-loosening effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of high-strength bolts, specifically to a high-strength anti-loosening bolt with a self-locking function. Background Technology

[0002] High-strength bolts are bolts made of high-strength steel or bolts that require a large preload. They are commonly used in bridges, rails, and high-voltage and ultra-high-voltage equipment connections. These bolts typically fracture through brittle fracture. High-strength bolts used in ultra-high-voltage equipment require a large preload to ensure the container's seal.

[0003] Existing high-strength anti-loosening bolts are fixed during installation by the external threads of the bolt, and then tightened by a nut to form a fixed bolt. However, such high-strength bolts do not have a self-locking function. High-strength anti-loosening bolts without a self-locking function mainly rely on external factors (such as preload, coating, thread locking agent, etc.) to prevent loosening. If these factors fail or are damaged, the anti-loosening performance of the bolt will be greatly reduced.

[0004] Therefore, it is necessary to invent a high-strength anti-loosening bolt with a self-locking function to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength anti-loosening bolt with a self-locking function. The high-strength bolt is threaded through to the desired installation position, then a washer is placed over the bolt, and finally a nut is screwed onto the bolt. Once the nut is in place, a hexagonal screwdriver is used to align with the hexagonal groove inside the rotating head, and the rotating head drives the threaded rod to rotate. The threaded rod is movably connected to a push block, which pushes the push block to push the limiting blocks on both sides out of the high-strength bolt, allowing the limiting blocks to insert into the limiting groove inside the nut, thus achieving a self-locking anti-loosening effect. This addresses the problem mentioned in the background art where existing high-strength anti-loosening bolts are fixed during installation by the external threads of the bolt, and then secured by tightening the nut. However, such high-strength bolts lack a self-locking function. Furthermore, high-strength anti-loosening bolts without a self-locking function rely primarily on external factors to prevent loosening; if these factors fail or are damaged, the bolt's anti-loosening performance will be significantly reduced.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength anti-loosening bolt with self-locking function, comprising a high-strength bolt;

[0007] The gear mechanism is set around the bottom of the high-strength bolt to prevent loosening. The high-strength bolt is threaded with a nut, and the inner two sides of the nut have limit grooves.

[0008] The self-locking mechanism includes a rotating head, a push block, and a limit block.

[0009] Preferably, the outer surface of the high-strength bolt is provided with a groove, and a washer is fitted on the outside of the high-strength bolt, with anti-slip teeth provided on both the top and bottom of the washer.

[0010] Preferably, the rotating head is disposed inside the high-strength bolt, a hexagonal groove is formed on the upper surface of the rotating head, a threaded rod is fixedly connected to the lower part of the rotating head, the push block is movably connected to the threaded rod, and limit blocks are slidably connected to both sides of the interior of the high-strength bolt.

[0011] Preferably, the high-strength bolt has grooves on both the front and rear sides inside, and a slider is slidably connected inside the grooves. The push block is fixedly connected to the front and rear sides of the push block.

[0012] Preferably, there are two sets of limiting blocks, and a sliding rod is slidably connected below the two sets of limiting blocks. A tension spring is provided on the outside of the sliding rod and the inside of the limiting block.

[0013] Preferably, the two sides of the push block are designed with bevels, the inner side of the limiting block is also set with bevels, and the two sides of the push block match the inner side of the limiting block.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. The self-locking mechanism enables a self-locking function between the high-strength bolt and the nut, while also preventing loosening. The high-strength bolt is threaded through to the desired installation position, then a washer is placed over the high-strength bolt, and then the nut is screwed over. Once the nut is in place, a hex screwdriver is used to align the hexagonal groove inside the rotating head, and the rotating head is then turned to drive the threaded rod to rotate. The movable connection between the threaded rod and the push block pushes the push block to push the limit blocks on both sides out of the high-strength bolt, allowing the limit blocks to insert into the limit groove inside the nut, thus achieving a self-locking and anti-loosening effect.

[0016] 2. By using high-strength bolts, toothed teeth, washers, and anti-slip teeth, the anti-loosening and stability of high-strength bolts and nuts are enhanced. Multiple sets of toothed teeth under the high-strength bolts at the installation position form an anti-slip and anti-loosening function by contacting the installation surface with multiple toothed teeth. At the same time, the washers are tightly attached to the bottom of the installation, and the anti-slip teeth set on the top and bottom of the washers achieve the anti-loosening effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the high-strength bolt structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the nut structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the self-locking mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the push block and limiting block structure of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. High-strength bolt; 2. Gear; 3. Groove; 4. Washer; 5. Anti-slip teeth; 6. Nut; 7. Limiting groove; 8. Self-locking mechanism; 801. Rotary head; 802. Hexagonal groove; 803. Threaded rod; 804. Push block; 805. Slide groove; 806. Sliding block; 807. Limiting block; 808. Slide rod; 809. Tension spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-5 The high-strength anti-loosening bolt with self-locking function shown includes a high-strength bolt 1;

[0027] Gear 2 is set around the bottom of the high-strength bolt 1 to prevent loosening. The high-strength bolt 1 is externally threaded with a nut 6, and the inner two sides of the nut 6 are provided with limit grooves 7.

[0028] The self-locking mechanism 8 includes a rotating head 801, a push block 804, and a limiting block 807. A high-strength bolt 1 is threaded through to the desired installation position, followed by a washer 4 placed over the high-strength bolt 1, and then a nut 6 is screwed onto the high-strength bolt 1. Once the nut 6 is in place, a hexagonal screwdriver is used to align with the hexagonal groove 802 inside the rotating head 801. The rotating head 801 is then rotated, causing the threaded rod 803 to rotate. The threaded rod 803 is movably connected to the push block 804, which pushes the push block 804 to press the limiting blocks 807 on both sides out of the high-strength bolt 1, allowing the limiting blocks 807 to insert into the limiting groove 7 inside the nut 6, thus achieving a self-locking and anti-loosening effect.

[0029] like Figure 1 and Figure 3 As shown, a groove 3 is provided on the outer surface of the high-strength bolt 1, and a washer 4 is fitted on the outside of the high-strength bolt 1. Anti-slip teeth 5 are provided on both the upper and lower parts of the washer 4. The anti-slip teeth 5 provided on the upper and lower parts of the washer 4 are attached to the lower part of the installation and the upper part of the nut 6, thereby improving the anti-loosening effect.

[0030] like Figure 1 , Figure 4 and Figure 5 As shown, the rotating head 801 is located inside the high-strength bolt 1. A hexagonal groove 802 is provided on the upper surface of the rotating head 801. A threaded rod 803 is fixedly connected to the lower part of the rotating head 801. The push block 804 is movably connected to the threaded rod 803. Limiting blocks 807 are slidably connected to both sides of the interior of the high-strength bolt 1. A hexagonal screwdriver is inserted into the hexagonal groove 802 inside the upper part of the rotating head 801. Then, the hexagonal screwdriver is rotated to drive the rotating head 801 and the threaded rod 803 below to rotate. The rotation of the threaded rod 803 pushes the push block 804 to move downward, so that the limiting blocks 807 on both sides of the push block 804 are pushed out of the high-strength bolt 1 and inserted into the limiting groove 7 inside the nut 6 to form a self-locking effect.

[0031] like Figure 4 As shown, the high-strength bolt 1 has grooves 805 on both the front and rear sides inside. A slider 806 is slidably connected inside the groove 805. The push block 804 is fixedly connected to the front and rear sides of the push block 804. When the push block 804 is pushed by the threaded rod 803, it is limited and slid in the groove 805 inside the high-strength bolt 1 by the sliders 806 on the front and rear sides, thereby improving the stability of the push block 804 during the movement process.

[0032] like Figure 4 and Figure 5As shown, there are two sets of limiting blocks 807. Sliding rods 808 are slidably connected below the two sets of limiting blocks 807. Tension springs 809 are provided on the outside of the sliding rods 808 and the inside of the limiting blocks 807. The limiting blocks 807 improve the stability during movement by setting the sliding rods 808. The tension springs 809 provided on the inside of the limiting blocks 807 and the outside of the sliding rods 808 allow the limiting blocks 807 to extend and retract into the high-strength bolt 1 when they are not squeezed by the push block 804.

[0033] like Figure 4 and Figure 5 As shown, the push block 804 has a beveled design on both sides, and the limit block 807 has a beveled design on the inside. The push block 804 and the limit block 807 match each other. By matching the beveled design on both sides of the push block 804 and the beveled design on the inside of the limit block 807, the limit block 807 can be squeezed to move.

[0034] The working principle of this practical application is as follows: First, thread the high-strength bolt 1 through the bolt at the desired installation position. Then, place the washer 4 over the high-strength bolt 1, tightly against the underside of the installation. Next, screw the nut 6 over the high-strength bolt 1. When the nut 6 is fully tightened, it presses against the washer 4, causing the upper and lower anti-slip teeth 5 of the washer 4 to adhere to the underside of the installation and the top of the nut 6, thereby enhancing the anti-loosening performance. Then, use a hex screwdriver to align with the hexagonal groove 802 inside the rotating head 801, and then rotate the hex screwdriver to drive the rotating head 801 and the bolt... The threaded rod 803 rotates, and the movable connection between the threaded rod 803 and the push block 804 causes the inclined surfaces on both sides of the push block 804 to press and push the inclined surface inside the limit block 807. This causes the limit block 807 to pull open the tension spring 809 outside the slide rod 808 and extend out of the high-strength bolt 1. The other end of the limit block 807 is then inserted into the limit groove 7 inside the nut 6, completing the self-locking anti-loosening function. In this way, the use of the high-strength anti-loosening bolt with self-locking function is completed.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-strength anti-loosening bolt with self-locking function, characterized in that: Including high-strength bolts (1); Gear mechanism (2) is set around the bottom of high-strength bolt (1) to prevent loosening. The external thread of the high-strength bolt (1) is connected to a nut (6). Limiting grooves (7) are opened on the inner two sides of the nut (6). The self-locking mechanism (8) includes a rotating head (801), a push block (804), and a limit block (807).

2. A high-strength anti-loosening bolt with self-locking function according to claim 1, characterized in that: The high-strength bolt (1) has a groove (3) on its outer surface, and a washer (4) is fitted on the outside of the high-strength bolt (1). The washer (4) has anti-slip teeth (5) on both the top and bottom.

3. A high-strength anti-loosening bolt with self-locking function according to claim 1, characterized in that: The rotating head (801) is located inside the high-strength bolt (1). A hexagonal groove (802) is provided on the upper surface of the rotating head (801). A threaded rod (803) is fixedly connected to the lower part of the rotating head (801). The push block (804) is movably connected to the threaded rod (803). Limiting blocks (807) are slidably connected to both sides inside the high-strength bolt (1).

4. A high-strength anti-loosening bolt with self-locking function according to claim 1, characterized in that: The high-strength bolt (1) has a sliding groove (805) on both the front and rear sides inside. A slider (806) is slidably connected inside the sliding groove (805). The push block (804) is fixedly connected to the front and rear sides of the push block (804).

5. A high-strength anti-loosening bolt with self-locking function according to claim 1, characterized in that: Two sets of limiting blocks (807) are provided, and slide rods (808) are slidably connected below the two sets of limiting blocks (807). Tension springs (809) are provided on the outside of the slide rods (808) and the inside of the limiting blocks (807).

6. A high-strength anti-loosening bolt with self-locking function according to claim 1, characterized in that: The push block (804) has a beveled design on both sides, and the inner side of the limiting block (807) is also beveled. The two sides of the push block (804) match the inner side of the limiting block (807).

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