Thread protector with buffer structure

By designing a thread protector with a protective cylinder, end protection plate, adjustment components, and buffer structure, the problem of the inability to adjust the buffer protection range in existing technologies has been solved. This achieves stable support and all-round protection for pipes of different diameters, reducing the impact of vibration and shock on the pipes.

CN224198328UActive Publication Date: 2026-05-05CANGZHOU WEIKEN PIPELINE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CANGZHOU WEIKEN PIPELINE MFG CO LTD
Filing Date
2025-06-10
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing thread protectors cannot adjust the buffer protection range according to different pipe diameters, resulting in limited protection of the pipe ends.

Method used

A threaded protector is designed, comprising a protective cylinder, an end protection plate, a protective pad, a threaded plate, an elastic buffer pad, a buffer plate, an adjustment component, and a buffer structure. The adjustment component and the buffer structure enable stable support and buffer protection for pipes of different diameters.

Benefits of technology

It enables the adjustment of the buffer protection range according to the pipe diameter, improving the all-round protection effect of the pipe and reducing the impact of vibration and impact on the pipe during loading, unloading or transportation.

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Abstract

The utility model discloses a thread protector with a buffer structure, which comprises a protective cylinder, an end protective plate, a protective pad, a thread plate, an elastic buffer pad, a buffer plate, an adjusting component and the buffer structure, the inner side wall of the protective cylinder is fixedly connected with the elastic pad, and the end protective plate is detachably connected to one side of the protective cylinder. The protection pad is fixedly connected to one side of the end protection plate, a protection groove is formed in the protection pad, the two threaded plates are arranged in the protection cylinder in an opposite moving mode, threads matched with the inner wall of a pipeline are arranged on the threaded plates, the inner walls of the pipelines with different diameters can be stably supported, the two elastic buffering pads are arranged, and the two elastic buffering pads are arranged in the protection cylinder. The two elastic buffering pads are symmetrically connected between the two threaded plates, vibration borne by the threaded plates can be buffered, and therefore the influence of vibration on the inner wall of the pipeline is reduced. According to the thread protector with the buffer structure, the buffer protection range can be conveniently adjusted according to the diameters of different pipelines.
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Description

Technical Field

[0001] This utility model relates to the field of thread protector technology, specifically to a thread protector with a buffer structure. Background Technology

[0002] Thread protectors are caps and bushings used to protect threads and seals during loading, unloading, transportation and storage. They protect threads from damage such as wear, corrosion and impact, ensuring the accuracy and integrity of the threads, thereby guaranteeing the reliability and sealing of threaded connections and extending the service life of threaded components. However, current thread protectors only protect the threaded area of ​​the pipe and are not convenient for protecting the ends of the pipe. Local deformation of the pipe ends is prone to occur, which will affect the subsequent connection effect of the pipe.

[0003] In the prior art, a thread protector has been proposed to address the above problems. It includes a body, a sealing plate, and a buffer body. The sealing plate is used to prevent rainwater or dust from passing through the body. One end of the body has a thread on its outer wall for connection with the internal thread of the pipe. The other end of the body is connected to one side of the buffer body. The other side of the buffer body extends along the axial direction of the body and forms a groove with the outer wall of the body for fitting the pipe. It can protect the end of the pipe. Although it is convenient to protect the threaded part and end of the pipe, the size of the thread protector is fixed, which makes it inconvenient to adjust the buffer protection range according to the diameter of different pipes. It has high limitations when providing buffer protection for pipes. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a thread protector with a buffer structure, thereby solving the problem mentioned in the background technology that it is inconvenient to adjust the buffer protection range according to different pipe diameters.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a thread protector with a buffer structure, comprising a protective cylinder, an end protection plate, a protective pad, a threaded plate, an elastic buffer pad, a buffer plate, an adjustment component, and a buffer structure;

[0008] The end protection plate is detachably connected to one side of the protective cylinder;

[0009] The protective pad is fixedly connected to one side of the end protection plate, and a protective groove is provided on the protective pad;

[0010] Two threaded plates are provided, and the two threaded plates are moved towards each other inside the protective cylinder;

[0011] Two elastic buffer pads are provided, and the two elastic buffer pads are symmetrically connected between the two threaded plates;

[0012] The buffer plate is fixedly connected to each of the threaded plates;

[0013] The adjustment component is disposed between the two buffer plates;

[0014] The buffer structure is mounted on each of the buffer plates.

[0015] Furthermore, the adjustment component includes:

[0016] An adjusting plate, the adjusting plate being located between the two threaded plates;

[0017] An adjusting rod is rotatably connected between the adjusting plate and the end protection plate.

[0018] The main gear is fixedly connected to the adjusting rod;

[0019] The regulating cylinder is provided in two parts, and the two regulating cylinders are respectively connected to the two buffer plates;

[0020] A double-ended screw, which is threadedly connected between the two adjusting cylinders;

[0021] The driven wheel is mounted on the double-ended screw, and the main gear meshes with the driven wheel.

[0022] Furthermore, the buffer structure includes:

[0023] The buffer cylinder is provided in two parts, and the two buffer cylinders are symmetrically connected to adjacent buffer plates;

[0024] A buffer spring, which is fixedly connected to the inner wall of the buffer cylinder;

[0025] A buffer rod is fixedly connected to the buffer spring, and the buffer rod is slidably connected to the buffer cylinder through it.

[0026] A buffer strip is connected through the buffer rod, and a buffer groove is provided on the inner side wall of the buffer cylinder for the buffer strip to slide.

[0027] Furthermore, a rotating cylinder is detachably connected to one side of the end protection plate, a rotating plate is fixedly connected to the inner wall of the rotating cylinder, a rotating opening matching the rotating plate is opened on the adjusting rod, and a rotating ring is fixedly connected to the rotating cylinder.

[0028] Furthermore, two fixing rods are symmetrically connected to one side of the adjusting plate, and fixing grooves matching the fixing rods are provided on both the end protection plate and the protective pad.

[0029] Furthermore, two connecting brackets are symmetrically connected to the end protection plate, and both connecting brackets are threadedly connected to the protective cylinder with connecting screws.

[0030] Furthermore, an adjustment frame is fixedly connected to one side of the adjustment cylinder, and an adjustment groove for the adjustment frame to slide is provided on the adjustment plate.

[0031] Furthermore, an elastic pad is fixedly connected to the inner wall of the protective cylinder.

[0032] (III) Beneficial Effects

[0033] Compared with the prior art, this utility model provides a thread protector with a buffer structure, which has the following advantages:

[0034] 1. In this utility model, the protective cylinder facilitates the placement and protection of the pipe, the elastic pad facilitates the buffer support of the outer wall of the pipe, and the adjusting component and two buffer plates facilitate the opposite movement of the two threaded plates to adjust the support and buffer range between the two threaded plates. At the same time, the buffer structure can buffer the threaded plates, thereby facilitating the two threaded plates to stably support the inner wall of pipes with different diameters, and thus facilitating the adjustment of the buffer protection range according to the diameter of different pipes.

[0035] 2. In this utility model, the end protection plate facilitates the support and protection of the pipe end, thereby providing all-round protection and buffer for the pipe. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of this application;

[0037] Figure 2 This is a cross-sectional structural diagram of this application;

[0038] Figure 3 This is an exploded structural diagram showing the fit between the threaded plate, the fixed rod, and the rotating cylinder in this application;

[0039] Figure 4 This is a cross-sectional structural diagram showing the assembly of the buffer cylinder, buffer rod, and buffer strip in this application.

[0040] In the diagram: 1. Protective cylinder; 2. End protection plate; 3. Protective pad; 4. Threaded plate; 5. Elastic buffer pad; 6. Buffer plate; 7. Adjusting plate; 8. Adjusting rod; 9. Main gear; 10. Adjusting cylinder; 11. Double-ended screw; 12. Driven wheel; 13. Buffer cylinder; 14. Buffer spring; 15. Buffer rod; 16. Buffer strip; 17. Rotating cylinder; 18. Rotating plate; 19. Rotating ring; 20. Fixed rod; 21. Connecting frame; 22. Connecting screw; 23. Adjusting frame; 24. Elastic pad. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Please see Figures 1 to 4 A thread protector with a buffer structure includes a protective cylinder 1, an end protection plate 2, a protective pad 3, a threaded plate 4, an elastic buffer pad 5, a buffer plate 6, an adjusting component, and a buffer structure. An elastic pad 24 is fixedly connected to the inner wall of the protective cylinder 1. The protective cylinder 1 can accommodate pipes of different specifications, and the elastic pad 24 provides stable support to the outer wall of the pipe. The end protection plate 2 is detachably connected to one side of the protective cylinder 1, and the protective pad 3 is fixedly connected to one side of the end protection plate 2. The protective pad 3 has a protective groove for easy placement and support of the pipe end. To provide buffering at the pipe end, two threaded plates 4 are installed, which are moved towards each other inside the protective cylinder 1. The threaded plates 4 are provided with threads that match the inner wall of the pipe, which can provide stable support for the inner wall of pipes of different diameters. Two elastic buffer pads 5 are provided, which are symmetrically connected between the two threaded plates 4, which can buffer the vibration of the threaded plates 4, thereby reducing the impact of vibration on the inner wall of the pipe. Buffer plates 6 are fixedly connected to each threaded plate 4, and the adjustment component is set between the two buffer plates 6. The buffer structure is installed on each buffer plate 6.

[0043] refer to Figure 2 as well as Figure 3The adjustment assembly includes an adjustment plate 7, an adjustment rod 8, a main gear 9, an adjustment cylinder 10, a double-ended screw 11, and a driven wheel 12. The adjustment plate 7 is located between two threaded plates 4. The adjustment rod 8 is rotatably connected between the adjustment plate 7 and the end protection plate 2. The main gear 9 is fixedly connected to the adjustment rod 8. There are two adjustment cylinders 10, which are respectively connected to two buffer plates 6. An adjustment frame 23 is fixedly connected to one side of the adjustment cylinder 10. The adjustment plate 7 has an adjustment groove for the adjustment frame 23 to slide, which can limit the sliding of the adjustment frame 23 on the adjustment plate 7, so that the adjustment cylinder 10 can drive the buffer plate 6 to move stably. The double-ended screw 11 is threaded between the two adjustment cylinders 10. The double-ended screw 11 has symmetrical threads in opposite directions. The driven wheel 12 is installed on the double-ended screw 11, and the main gear 9 meshes with the driven wheel 12.

[0044] When the adjusting rod 8 drives the double-headed screw 11 to rotate through the meshing of the main gear 9 and the driven wheel 12, the two adjusting cylinders 10 will move towards each other on the double-headed screw 11, causing the two adjusting cylinders 10 to drive the two buffer plates 6 to move towards each other, thereby adjusting the support and buffer range between the two threaded plates 4, so that the two threaded plates 4 can support the inner wall of pipes of different specifications.

[0045] refer to Figure 4 The buffer structure includes a buffer cylinder 13, a buffer spring 14, a buffer rod 15, and a buffer strip 16. There are two buffer cylinders 13, which are symmetrically connected to adjacent buffer plates 6. The buffer spring 14 is fixedly connected to the inner wall of the buffer cylinder 13. The buffer rod 15 is fixedly connected to the buffer spring 14 and is slidably connected to the buffer cylinder 13. The buffer strip 16 is connected to the buffer rod 15. A buffer groove for the buffer strip 16 to slide is provided on the inner wall of the buffer cylinder 13.

[0046] When the protective cylinder 1 and the pipeline are subjected to external impact, the resulting vibration will be symmetrically transmitted to the two buffer cylinders 13 through the buffer plate 6, and the two buffer springs 14 will be compressed or stretched to a certain extent. The kinetic energy is converted into elastic potential energy and stored through the elastic deformation of the buffer springs 14, thereby reducing the impact force of the vibration. When the buffer springs 14 move, the buffer rod 15 will drive the buffer strip 16 to move. The buffer strip 16 will move in the buffer groove. The energy is consumed by the viscous resistance between the buffer strip 16 and the buffer groove, which can avoid the secondary impact caused by the reciprocating vibration of the buffer springs 14, thereby reducing the impact of vibration generated during loading, unloading or transportation on the pipeline.

[0047] refer to Figure 1 as well as Figure 3A rotating cylinder 17 is detachably connected to one side of the end protection plate 2. A rotating plate 18 is fixedly connected to the inner wall of the rotating cylinder 17. A rotating opening matching the rotating plate 18 is opened on the adjusting rod 8, and a rotating ring 19 is fixedly connected to the rotating cylinder 17.

[0048] After the rotating cylinder 17 is installed on the end protection plate 2, the rotating plate 18 will be inserted into the rotating port on the adjusting rod 8. When the operator rotates the rotating cylinder 17 through the rotating ring 19, the rotating plate 18 will drive the adjusting rod 8 to rotate stably, so that the adjusting rod 8 can drive the double-headed screw 11 to rotate stably through the meshing of the main gear 9 and the driven wheel 12.

[0049] refer to Figure 1 Two connecting brackets 21 are symmetrically connected to the end protection plate 2. Both connecting brackets 21 are threadedly connected to the protective cylinder 1 with connecting screws 22. Two fixing rods 20 are symmetrically connected to one side of the adjusting plate 7. Fixing grooves matching the fixing rods 20 are opened on both the end protection plate 2 and the protective pad 3.

[0050] By tightening the two connecting screws 22 between the protective cylinder 1 and the two connecting brackets 21, the end protection plate 2 can be installed and removed on the protective cylinder 1. When the end protection plate 2 is installed on the protective cylinder 1, the two fixing rods 20 will drive the fixing plate to be installed inside the protective cylinder 1, so that the main gear 9 can mesh with the driven wheel 12 to rotate the double-ended screw 11.

[0051] In summary, this thread protector with a buffer structure first places the pipe to be loaded, unloaded, or transported into the protective cylinder 1, and then installs the end protection plate 2 inside the protective cylinder 1, allowing the pipe end to move into the protective groove on the protective pad 3. Simultaneously, according to the pipe specifications, the rotating cylinder 17 rotates, causing the rotating plate 18 to drive the adjusting rod 8 to rotate. At the same time, the adjusting rod 8 drives the double-headed screw 11 to rotate through the meshing of the main gear 9 and the driven wheel 12. Through the rotation of the double-headed screw 11, the two adjusting cylinders 10 drive the two buffer plates 6 to move towards each other, causing the two threaded plates 4 to move towards each other and support the inner wall of the pipe. Thus, the pipe can be stably placed inside the protective cylinder 1. When vibration occurs during loading, unloading, or transport, multiple buffer springs 14 will be compressed or stretched to a certain extent by the vibration, and the kinetic energy will be converted into elastic potential energy and stored through elastic deformation, reducing the impact of vibration on the pipe. At the same time, the protective pad 3 and the elastic pad 24 will buffer and protect the pipe end and outer wall, thereby improving the protection effect during pipe loading, unloading, or transport.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thread protector with a buffer structure, characterized in that, include: Protective tube (1); End protection plate (2), which is detachably connected to one side of the protective cylinder (1); Protective pad (3), the protective pad (3) is fixedly connected to one side of the end protection plate (2), and the protective pad (3) is provided with a protective groove; Threaded plate (4), two threaded plates (4) are provided, and the two threaded plates (4) are moved towards each other inside the protective cylinder (1); Two elastic buffer pads (5) are provided, and the two elastic buffer pads (5) are symmetrically connected between the two threaded plates (4); A buffer plate (6) is fixedly connected to each of the threaded plates (4); An adjustment assembly is disposed between the two buffer plates (6); A buffer structure is mounted on each of the buffer plates (6).

2. A thread protector with a buffer structure according to claim 1, characterized in that, The adjustment component includes: Adjusting plate (7), the adjusting plate (7) is located between the two threaded plates (4); Adjusting rod (8), the adjusting rod (8) is rotatably connected between the adjusting plate (7) and the end protection plate (2); The main gear (9) is fixedly connected to the adjusting rod (8); Adjusting cylinder (10), wherein two adjusting cylinders (10) are provided, and the two adjusting cylinders (10) are respectively connected to the two buffer plates (6); A double-ended screw (11) is threaded between the two adjusting cylinders (10); Driven wheel (12) is mounted on the double-ended screw (11), and the main gear (9) meshes with the driven wheel (12).

3. A thread protector with a buffer structure according to claim 2, characterized in that, The buffer structure includes: Buffer cylinder (13), wherein two buffer cylinders (13) are provided, and the two buffer cylinders (13) are symmetrically connected on adjacent buffer plates (6); A buffer spring (14) is fixedly connected to the inner wall of the buffer cylinder (13); A buffer rod (15) is fixedly connected to the buffer spring (14), and the buffer rod (15) is slidably connected to the buffer cylinder (13). A buffer strip (16) is connected through the buffer rod (15), and a buffer groove is provided on the inner side wall of the buffer cylinder (13) for the buffer strip (16) to slide.

4. A thread protector with a buffer structure according to claim 3, characterized in that, A rotating cylinder (17) is detachably connected to one side of the end protection plate (2). A rotating plate (18) is fixedly connected to the inner wall of the rotating cylinder (17). A rotating opening matching the rotating plate (18) is opened on the adjusting rod (8), and a rotating ring (19) is fixedly connected to the rotating cylinder (17).

5. A thread protector with a buffer structure according to claim 4, characterized in that, Two fixing rods (20) are symmetrically connected to one side of the adjusting plate (7). The end protection plate (2) and the protective pad (3) are both provided with fixing grooves that match the fixing rods (20).

6. A thread protector with a buffer structure according to claim 5, characterized in that, Two connecting brackets (21) are symmetrically connected to the end protection plate (2), and both connecting brackets (21) are threadedly connected to the protective cylinder (1) with connecting screws (22).

7. A thread protector with a buffer structure according to claim 6, characterized in that, An adjustment frame (23) is fixedly connected to one side of the adjustment cylinder (10), and an adjustment groove is provided on the adjustment plate (7) for the adjustment frame (23) to slide.

8. A thread protector with a buffer structure according to claim 7, characterized in that, An elastic pad (24) is fixedly connected to the inner wall of the protective cylinder (1).