Pipe anti-skid connecting bolt

Abstract

The utility model discloses a pipeline antiskid connecting bolt, including bolt, nut, locking block, the nut is equipped with six even distribution's nut groove from top surface to downwards, the bolt is equipped with vertical groove, the locking block cross section is "S" type. The utility model discloses a pipeline antiskid connecting bolt, compared with the pin hole of traversing, the cross type vertical groove of extending to the bottom of bolt thread part reduces the requirement to the installation accuracy of nut, the mutual embedding of the hemispherical head of locking block and the hemispherical socket of nut outside cooperates the locking of bolt and nut, and the arc -shaped groove on nut groove makes the hemispherical head more easily slide into the hemispherical socket with the slope, and the unembedding groove below the hemispherical socket is convenient for the hemispherical head to pry out the hemispherical socket, and the locking block can be repeatedly used.

Description

Technical Field

[0001] This utility model relates to the field of bolt fastening technology, specifically to a pipe anti-slip connection bolt. Background Technology

[0002] In pipeline systems, especially under conditions of high pressure, high temperature, vibration, or frequent thermal expansion and contraction, traditional bolts and nuts may loosen after long-term stress, leading to risks such as leakage at flange connections, changes in pipeline stress, and equipment damage. Cotter pins and slotted nuts achieve absolute mechanical locking by passing the cotter pin through the pin hole of the bolt and the slot of the nut.

[0003] Most cotter pins and slotted nuts require high installation precision. After the nut is tightened, the pin hole on the bolt needs to be aligned with the slot of the nut. During installation, the tail of the inserted cotter pin needs to be bent, which is time-consuming. Cotter pins are usually for single use only. When disassembling, the cotter pin needs to be straightened before it can be removed. This process can easily deform and damage the tail of the cotter pin, making it unusable for reuse.

[0004] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a pipe anti-slip connecting bolt, which solves the problems mentioned in the background section.

[0006] Technical solution To achieve the above objectives, this utility model is implemented through the following technical solution: a pipe anti-slip connecting bolt, comprising a bolt, a nut, and a locking block, characterized in that: the nut has six evenly distributed nut grooves from top to bottom, the bolt has a vertical groove, and the locking block has an "S" shaped cross section.

[0007] Preferably, a hemispherical recess is provided below the nut groove, the nut groove extends to the bottom of the hemispherical recess, and an unseating groove is provided below the hemispherical recess.

[0008] Preferably, the outer edge of the top surface of the nut groove is inclined, and the top of the vertical groove to both ends of the hemispherical socket portion are provided with arc-shaped grooves.

[0009] Preferably, the inner side of the hook-shaped portion at both ends of the locking block is provided with a hemispherical head, and the hemispherical head corresponds to the hemispherical socket.

[0010] Preferably, the vertical groove has a cross-shaped cross section and a circular center position. The vertical groove extends from the top of the bolt to the bottom of the threaded portion. A positioning block is provided at the center of the vertical portion of the locking block, and the cross section of the positioning block corresponds to the circular center position of the vertical groove. Beneficial effects

[0011] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: The anti-slip connecting bolt of this utility model has a cross-shaped vertical groove extending to the bottom of the bolt thread portion, which reduces the requirements for the installation accuracy of the nut compared with the horizontal pin hole. The hemispherical head of the locking block and the hemispherical socket on the outside of the nut are interlocked to lock the bolt and nut. The arc groove and the inclined surface on the nut groove make it easier for the hemispherical head to slide into the hemispherical socket. The release groove below the hemispherical socket makes it easy to pry the hemispherical head out of the hemispherical socket. The locking block can be reused. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram of the bolt in this utility model; Figure 3 This is a schematic diagram of the nut in this utility model; Figure 4 This is a schematic diagram of the locking block in this utility model.

[0013] In the diagram: 1. Bolt; 2. Nut; 3. Locking block; 4. Vertical groove; 5. Nut groove; 6. Hemispherical socket; 7. Inclined surface; 8. Arc groove; 9. Unlocking groove; 10. Hemispherical head; 11. Positioning block. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1-4 As shown: A pipe anti-slip connection bolt includes a bolt 1, a nut 2, and a locking block 3. The nut 2 has six evenly distributed nut grooves 5 from top to bottom. The bolt 1 has a vertical groove 4. The locking block 3 has an "S" shaped cross section.

[0016] A hemispherical recess 6 is provided below the nut groove 5, and the nut groove 5 extends to the bottom of the hemispherical recess 6. An unseating groove 9 is provided below the hemispherical recess 6.

[0017] The outer edge of the top surface of the nut groove 5 is a slope 7, and the top of the vertical groove 4 to the two ends of the hemispherical socket 6 are provided with arc-shaped grooves 8, which correspond to the hemispherical head 10.

[0018] The locking block 3 has a hemispherical head 10 on the inner side of the hook-shaped part at both ends. The hemispherical head 10 corresponds to the hemispherical socket 6. The length of the connection between the vertical part and the hook-shaped part of the locking block 3 is slightly greater than the distance from the nut groove 5 to the corner, so that the hemispherical head 10 can slide into the arc groove 8.

[0019] The vertical groove 4 has a cross-shaped cross section and a circular center position. The vertical groove 4 extends from the top of the bolt 1 to the bottom of the threaded part. The locking block 3 has a positioning block 11 at the center of its vertical part. The cross section of the positioning block 11 corresponds to the circular center position of the vertical groove 4, which facilitates the positioning of the locking block 3.

[0020] In use, after the nut 2 is tightened to the specified torque, the positioning block 11 at the center of the locking block 3 is aligned with the center of the vertical groove 4 of the bolt 1, and then moved downward along the vertical groove 4. The locking block 3 is embedded in the nut groove 5, and the hemispherical heads 10 at both ends of the locking block 3 enter the arc groove 8 along the inclined surface 7. The locking block 3 continues to move downward, and the hemispherical heads 10 enter the hemispherical socket 6 along the arc groove 8 and engage with the hemispherical socket 6, thus locking the bolt 1 and the nut 2. When disassembly is required, the release groove 9 makes it easy to use tools to pry the hemispherical heads 10 out of the hemispherical socket 6.

[0021] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A pipe anti-slip connection bolt, comprising a bolt (1), a nut (2), and a locking block (3), characterized in that: The nut (2) has six evenly distributed nut grooves (5) from top to bottom, the bolt (1) has a vertical groove (4), and the locking block (3) has an "S" shaped cross section.

2. The anti-slip connecting bolt for pipes according to claim 1, characterized in that: A hemispherical recess (6) is provided below the nut groove (5), the nut groove (5) extends to the bottom of the hemispherical recess (6), and an unseating groove (9) is provided below the hemispherical recess (6).

3. The anti-slip connecting bolt for pipes according to claim 2, characterized in that: The outer edge of the top surface of the nut groove (5) is a slope (7), and the top of the vertical groove (4) to the two ends of the hemispherical socket (6) are provided with arc grooves (8).

4. The anti-slip connecting bolt for pipes according to claim 3, characterized in that: The locking block (3) has a hemispherical head (10) on the inner side of the hook-shaped part at both ends, and the hemispherical head (10) corresponds to the hemispherical socket (6).

5. A pipe anti-slip connecting bolt according to claim 4, characterized in that: The vertical groove (4) has a cross-shaped cross section and a circular center position. The vertical groove (4) extends from the top of the bolt (1) to the bottom of the threaded part. The locking block (3) has a positioning block (11) at the center of its vertical part. The cross section of the positioning block (11) corresponds to the circular center position of the vertical groove (4).

Images