A pipe thread direct head anti-loosening fastening structure

Abstract

The utility model discloses a pipe thread direct head anti-loosening fastening structure relates to pipeline connection technical field, including locating block, one end of locating block is fixedly connected with the locating frame, and the end portion of locating frame rotatably installs the limiting mechanism, and the limiting mechanism includes the limiting ring and first rotation lever, and both ends of limiting ring all end fixedly connected with the bended rod, the utility model first rotation lever rotates and will drive limiting ring movement through bended rod, and second rotation lever rotates with bended rod and takes locating rod as the axle, and the common cooperation makes limiting ring realize the clamping or loosening of pipe thread direct head, reaches the anti-loosening fastening effect, through the meshing drive of worm and sector worm wheel, has the self -lock function, can prevent reverse rotation and lead to loosening, and ensure the fastening stability, and limiting ring is connected with first, second rotation lever through bended rod, can adapt to different specifications pipe thread direct head, and enhances the applicability.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a pipe thread direct head anti-loosening fastening structure. Background Technology

[0002] During the installation and operation of pipeline systems, the pipe threaded connector is a key component connecting two sections of pipe, and the stability of its connection directly affects the safety and sealing of the entire pipeline system.

[0003] However, in the existing technology, in actual use, the pipe thread direct head is prone to loosening due to factors such as medium flow impact, vibration, and temperature changes, which leads to medium leakage. This not only affects the normal operation of the system but may also cause safety hazards and increase maintenance costs. Traditional pipe thread direct head fastening methods mostly rely on the friction of the thread itself or simple locking nuts, lacking a reliable anti-loosening structure. Under long-term vibration or changes in operating conditions, it is still difficult to effectively avoid loosening problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the existing technology where pipe threaded direct heads are prone to loosening due to factors such as vibration and changes in working conditions, and the traditional fastening methods have poor anti-loosening effect, are complicated to operate and have low applicability. Therefore, a pipe threaded direct head anti-loosening fastening structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pipe thread direct head anti-loosening fastening structure, including a positioning block, one end of which is fixedly connected to a positioning frame, and the end of the positioning frame is rotatably mounted with a limit mechanism;

[0006] The limiting mechanism includes a limiting ring and a first rotating rod. Both ends of the limiting ring are fixedly connected to bent rods. One end of the first rotating rod is rotatably connected to the other end of the bent rod. A sector-shaped worm gear is fixedly connected to one end of the first rotating rod. The sector-shaped worm gear is rotatably installed inside the positioning frame. A worm is rotatably installed inside the positioning block. Part of the worm is located inside the positioning frame. The sector-shaped worm gear meshes with the worm.

[0007] Preferably, a second rotating rod is rotatably connected at the junction of the bending rod and the limiting ring, and a positioning rod is fixedly installed at the end of the second rotating rod.

[0008] Preferably, the positioning rod is rotatably mounted on the inner side of the positioning frame, and the second rotating rod is parallel to the first rotating rod.

[0009] Preferably, one end of the worm gear is fixedly connected to a transmission rod, and a hexagonal movable rod is slidably connected inside the transmission rod.

[0010] Preferably, an annular groove is formed on the surface of the transmission rod, and the transmission rod is rotatably connected to the positioning block through the annular groove.

[0011] Preferably, a limiting block is fixedly installed at the end of the hexagonal movable rod, the hexagonal movable rod passes through one end of the positioning block, and the end of the positioning block has a through hole with a shape that matches the limiting block.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, when the first rotating rod rotates, it drives the limiting ring to move through the bending rod. The second rotating rod rotates with the bending rod around the positioning rod as the axis. Together, they enable the limiting ring to clamp or loosen the pipe thread direct head, achieving the effect of preventing loosening and fastening. Through the meshing transmission of the worm and the sector worm wheel, it has a self-locking function, which can prevent loosening caused by reverse rotation and ensure the stability of fastening. The limiting ring is connected to the first and second rotating rods through the bending rod, which can adapt to pipe thread direct heads of different specifications and enhance applicability.

[0014] 2. In this utility model, the hexagonal movable rod that is slidably connected inside the transmission rod can move axially. It passes through one end of the positioning block, and the limiting block fixed at the end cooperates with the matching through hole opened at the end of the positioning block. When the limiting block is inserted into the through hole, it restricts the rotation of the hexagonal movable rod, thereby locking the worm gear through the transmission rod. Pulling the hexagonal movable rod to make the limiting block disengage from the through hole will release the lock. The transmission rod and the worm gear can be driven to rotate through the hexagonal movable rod. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a pipe thread direct head anti-loosening fastening structure proposed in this utility model;

[0016] Figure 2 This is a top view of a pipe thread direct head anti-loosening fastening structure proposed in this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the worm gear, transmission rod, and hexagonal movable rod of the anti-loosening fastening structure for a direct threaded pipe head proposed in this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the limiting mechanism of the anti-loosening fastening structure of the pipe thread direct head proposed in this utility model.

[0019] Legend: 1. Positioning block; 2. Limiting mechanism; 3. Positioning frame; 4. Worm gear; 5. Transmission rod; 6. Hexagonal movable rod; 7. Limiting block; 8. Annular groove; 21. Limiting ring; 22. Bending rod; 23. First rotating rod; 24. Second rotating rod; 25. Sector worm gear; 26. Positioning rod. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a fastening structure for preventing loosening of a pipe thread direct head, including a positioning block 1. One end of the positioning block 1 is fixedly connected to a positioning frame 3. A limiting mechanism 2 is rotatably installed at the end of the positioning frame 3. The limiting mechanism 2 includes a limiting ring 21 and a first rotating rod 23. Both ends of the limiting ring 21 are fixedly connected to bent rods 22. One end of the first rotating rod 23 is rotatably connected to the other end of the bent rod 22. One end of the first rotating rod 23 is fixedly connected to a sector worm gear 25. The sector worm gear 25 is rotatably installed inside the positioning frame 3. A worm 4 is rotatably installed inside the positioning block 1. Part of the worm 4 is located inside the positioning frame 3. The sector worm gear 25 meshes with the worm 4. A second rotating rod 24 is rotatably connected at the junction of the bent rod 22 and the limiting ring 21. A positioning rod 26 is fixedly installed at the end of the second rotating rod 24. The positioning rod 26 is rotatably installed inside the positioning frame 3, and the second rotating rod 24 is parallel to the first rotating rod 23.

[0023] The specific settings and functions of this embodiment are described below. Rotating the worm 4 inside the positioning block 1 causes the worm 4 to rotate. Since part of the worm 4 is located inside the positioning frame 3 and meshes with the sector worm wheel 25, the rotation of the worm 4 will drive the sector worm wheel 25 to rotate. The sector worm wheel 25 is fixed to one end of the first rotating rod 23, so the first rotating rod 23 rotates with the sector worm wheel 25 within the positioning frame 3. The other end of the first rotating rod 23 is rotatably connected to the bent rod 22, and the other end of the bent rod 22 is fixedly connected to the limiting ring 21. A second rotating rod 24 is rotatably connected at the junction of the bent rod 22 and the limiting ring 21. The positioning rod 26 at the end of the second rotating rod 24 is rotatably installed inside the positioning frame 3. Simultaneously, the second rotating rod 24 is parallel to the first rotating rod 23. Therefore, when the first rotating rod 23 rotates, it will drive the limiting ring 21 to move through the bent rod 22, and the second rotating rod 24 will move with the bent rod... Rotating around the positioning rod 26, the limiting ring 21 clamps or releases the pipe thread direct head, achieving a secure and anti-loosening effect. Through the meshing transmission of the worm gear 4 and the sector worm wheel 25, it has a self-locking function, preventing loosening due to reverse rotation and ensuring secure stability. The first rotating rod 23 and the second rotating rod 24 are arranged parallel to each other, working in conjunction with the positioning rod 26 and the positioning frame 3 to make the movement of the limiting ring 21 smoother and the clamping force more uniform. The limiting ring 21 is connected to the first rotating rod 23 and the second rotating rod 24 via the bent rod 22, adapting to different specifications of pipe thread direct heads and enhancing applicability. The rotating connection design of each component, such as the positioning block 1, the limiting mechanism 2, and the positioning frame 3, reduces movement resistance and extends service life. The overall structure, through the coordinated action of multiple components, effectively prevents the pipe thread direct head from loosening and improves connection reliability.

[0024] Example 2: Figure 1 , Figure 2 and Figure 3 As shown, a transmission rod 5 is fixedly connected to one end of the worm gear 4. A hexagonal movable rod 6 is slidably connected inside the transmission rod 5. An annular groove 8 is provided on the surface of the transmission rod 5. The transmission rod 5 is rotatably connected to the positioning block 1 through the annular groove 8. A limit block 7 is fixedly installed at the end of the hexagonal movable rod 6. The hexagonal movable rod 6 passes through one end of the positioning block 1. A through hole with a shape that matches the limit block 7 is provided at the end of the positioning block 1.

[0025] The overall effect of this embodiment is that the transmission rod 5, which is fixed at one end of the worm gear 4, is rotatably connected to the positioning block 1 through the annular groove 8 on its surface, ensuring that the transmission rod 5 can rotate stably and drive the worm gear 4 to rotate synchronously. The hexagonal movable rod 6, which is slidably connected inside the transmission rod 5, can move axially. It passes through one end of the positioning block 1, and the limiting block 7 fixed at the end cooperates with the matching through hole opened at the end of the positioning block 1. When the limiting block 7 is inserted into the through hole, it restricts the rotation of the hexagonal movable rod 6, thereby locking the worm gear 4 through the transmission rod 5. Pulling the hexagonal movable rod 6 to disengage the limiting block 7 from the through hole will release the lock. The transmission rod 5 and the worm gear 4 can be driven to rotate through the hexagonal movable rod 6. The annular groove 8 ensures the rotational stability of the transmission rod 5 and avoids axial movement. The sliding cooperation between the hexagonal movable rod 6 and the transmission rod 5 realizes the combination of rotational transmission and axial unlocking, which is convenient to operate. The matching design of the limiting block 7 and the through hole of the positioning block 1 can reliably lock the worm gear 4, prevent accidental rotation from causing fastening failure, enhance structural safety and operational flexibility, and extend the service life of the overall device.

[0026] The usage and working principle of this device are as follows: First, pull the hexagonal movable rod 6 to slide it along the inside of the transmission rod 5, causing the end limit block 7 to disengage from the fitting through hole at the end of the positioning block 1, thus releasing the lock on the worm gear 4. Then, rotate the transmission rod 5 via the hexagonal movable rod 6. The transmission rod 5 rotates stably within the positioning block 1 through the surface annular groove 8, thereby driving the worm gear 4 to rotate synchronously. When the worm gear 4 rotates, it meshes with the sector-shaped worm wheel 25 inside the positioning frame 3, causing the sector-shaped worm wheel 25 to rotate. This causes the first rotating rod 23, fixed on the sector-shaped worm wheel 25, to rotate within the positioning frame 3. The bending rod 22 drives the limiting ring 21 to move. At the same time, the second rotating rod 24 at the junction of the bending rod 22 and the limiting ring 21 rotates inside the positioning frame 3 with the positioning rod 26 as the axis. Since the second rotating rod 24 is parallel to the first rotating rod 23, they work together to make the limiting ring 21 clamp the pipe thread direct head. After clamping, the hexagonal movable rod 6 is pushed to make the limiting block 7 engage with the through hole of the positioning block 1, locking the worm gear 4 to prevent it from rotating accidentally and achieving anti-loosening fastening. When it is necessary to loosen, repeat the above unlocking steps and rotate the hexagonal movable rod 6 in the opposite direction. Through the transmission of each component, the limiting ring 21 can be loosened from the pipe thread direct head.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pipe thread direct head anti-loosening fastening structure, comprising a positioning block (1), characterized in that: One end of the positioning block (1) is fixedly connected to a positioning frame (3), and a limit mechanism (2) is rotatably installed at the end of the positioning frame (3). The limiting mechanism (2) includes a limiting ring (21) and a first rotating rod (23). Both ends of the limiting ring (21) are fixedly connected to a bent rod (22). One end of the first rotating rod (23) is rotatably connected to the other end of the bent rod (22). One end of the first rotating rod (23) is fixedly connected to a sector worm gear (25). The sector worm gear (25) is rotatably installed inside the positioning frame (3). The worm (4) is rotatably installed inside the positioning block (1). Part of the worm (4) is located inside the positioning frame (3). The sector worm gear (25) meshes with the worm (4).

2. The anti-loosening fastening structure for a pipe threaded direct head according to claim 1, characterized in that: A second rotating rod (24) is rotatably connected at the junction of the bent rod (22) and the limiting ring (21), and a positioning rod (26) is fixedly installed at the end of the second rotating rod (24).

3. The anti-loosening fastening structure for a pipe threaded direct head according to claim 2, characterized in that: The positioning rod (26) is rotatably mounted on the inner side of the positioning frame (3), and the second rotating rod (24) is parallel to the first rotating rod (23).

4. The anti-loosening fastening structure for a pipe threaded direct head according to claim 1, characterized in that: One end of the worm (4) is fixedly connected to a transmission rod (5), and a hexagonal movable rod (6) is slidably connected inside the transmission rod (5).

5. The anti-loosening fastening structure for a pipe threaded direct head according to claim 4, characterized in that: The transmission rod (5) has an annular groove (8) on its surface, and the transmission rod (5) is rotatably connected to the positioning block (1) through the annular groove (8).

6. The anti-loosening fastening structure for a pipe threaded direct head according to claim 4, characterized in that: The end of the hexagonal movable rod (6) is fixedly installed with a limiting block (7). The hexagonal movable rod (6) passes through one end of the positioning block (1). The end of the positioning block (1) has a through hole with a shape that matches the limiting block (7).

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