High-strength double-end tension bolt

Abstract

The utility model discloses a high-strength double-end tension bolt, which relates to the technical field of bolts and comprises a double-end bolt body, two ends of the double-end bolt body are sleeved with sealing rings, one side of each sealing ring is provided with a thread bushing which is in threaded connection with the double-end bolt body, one side of each thread bushing is fixedly provided with a protective pipe, and the protective pipe is fixedly connected with the double-end bolt body. A circular tube is slidably arranged on the inner wall of the protective tube, a guide plate is fixedly arranged on one side of the circular tube, a guide groove in guide fit with the guide plate is formed in the protective tube, a sleeve is fixedly arranged on one side of the top end of the guide plate, and a pressing convex column is slidably arranged in the sleeve; the double-end bolt has the advantages that external protection is provided, the adverse effect of the external environment on the exposed double-end bolt body is effectively reduced, and the protection performance of the double-end bolt is enhanced; and the stud body exposed to the outside to different degrees can be protected and used, and the application range is further widened.

Description

Technical Field

[0001] This utility model relates to a bolt, and more particularly to a high-strength double-ended tension bolt, belonging to the field of bolt technology. Background Technology

[0002] Double-ended studs, also called double-ended bolts or double-ended screws, are used for fixing and connecting machinery. Double-ended studs have threads on both ends and a threaded rod in the middle, which can be thick or thin. They are generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, cranes, large-span steel structures, and large buildings.

[0003] However, in the actual application of double-ended bolts, since the main function of double-ended bolts is to connect and fix mechanical parts, their two ends are usually directly exposed to the outside air environment without effective protection measures. The exposed part of the bolt is susceptible to corrosion from external factors, affecting the normal use of the bolt. Furthermore, the size and length of the exposed part of the bolt are inconsistent, making it impossible to adapt to different uses, which limits its application. Utility Model Content

[0004] The purpose of this utility model is to provide a high-strength double-ended tension bolt to solve the problems mentioned in the background art, where the two ends of the bolt are often directly exposed to the outside world, lack protection, are easily corroded and affect normal use; and the exposed part has different sizes, which limits its adaptability and has certain limitations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-strength double-ended tension bolt, comprising a double-ended bolt body, with sealing rings fitted at both ends of the double-ended bolt body, a threaded sleeve for threaded connection to the double-ended bolt body on one side of the sealing ring, a protective tube fixedly provided on one side of the threaded sleeve, a circular tube slidably provided on the inner wall of the protective tube, a guide plate fixedly provided on one side of the circular tube, a guide groove for guiding and cooperating with the guide plate being opened inside the protective tube, a sleeve fixedly provided on one side of the top of the guide plate, a pressing protrusion slidably provided inside the sleeve, and a support assembly for supporting the pressing protrusion being provided inside the sleeve.

[0006] As a preferred technical solution of this utility model, the sealing ring is made of rubber, and the surface of the threaded sleeve is fixedly provided with a plurality of evenly spaced anti-slip ridges, the surface of which is chamfered.

[0007] As a preferred embodiment of this utility model, a fixing ring is fixedly provided at one end of the circular tube, and the fixing ring is slidably connected to the protective tube.

[0008] As a preferred embodiment of this utility model, a pull cap is fixedly provided at the other end of the round tube, and an anti-slip ring is fixedly provided on the surface of the pull cap.

[0009] As a preferred embodiment of this utility model, two sealing rings are fixedly provided on the surface of the circular tube, and a sealing strip is fixedly provided at the connection between the protective tube and the circular tube.

[0010] As a preferred embodiment of this utility model, the surface of the protective tube is provided with a plurality of arc-shaped grooves that cooperate with the movement of the pressing protrusions, and the interior of the protective tube is provided with a guide groove that cooperates with the guide plate.

[0011] As a preferred embodiment of this utility model, the support assembly includes a support spring, which is fixedly installed at the bottom end of the inner wall of the sleeve, and a guide ring is fixedly provided at the bottom end of the pressing protrusion, which is slidably connected to the inner wall of the sleeve.

[0012] As a preferred embodiment of this utility model, the top end of the support spring is fixedly connected to the bottom end of the guide ring, and the top of the sleeve is provided with a circular groove that moves in conjunction with the pressing protrusion.

[0013] Compared with related technologies, the high-strength double-ended tension bolt provided by this utility model has the following beneficial effects:

[0014] 1. By using sealing rings fitted at both ends of the double-ended bolt body, an effective seal protection can be formed at the connection position between the bolt end and the threaded sleeve. At the same time, combined with the threaded sleeve, protective tube and internal round tube, external protection is provided, which effectively reduces the adverse effects of the external environment on the exposed double-ended bolt body and enhances its protective performance.

[0015] 2. By setting a movable round tube and matching it with a pressing protrusion and support assembly, the round tube and protective tube can be limited at different positions, thereby protecting the double-ended bolt body exposed to the outside to varying degrees, and further expanding its application range. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded structural diagram of the double-headed bolt body of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the protective tube of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the circular tube of this utility model;

[0020] Figure 5 This utility model Figure 4 A magnified structural diagram at point A;

[0021] Figure 6 This is a cross-sectional structural diagram of the sleeve of this utility model.

[0022] In the diagram: 1. Double-ended bolt body; 2. Sealing ring; 3. Threaded sleeve; 4. Protective tube; 5. Round tube; 6. Guide plate; 7. Sleeve; 8. Pressing protrusion; 9. Support assembly; 901. Support spring; 902. Guide ring; 903. Circular groove; 10. Arc groove; 11. Sealing ring; 12. Fixing ring; 13. Anti-slip protrusion; 14. Pull cap. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-6 This utility model provides a high-strength double-ended tension bolt, including a double-ended bolt body 1. Both ends of the double-ended bolt body 1 are fitted with sealing rings 2. The sealing rings 2 at both ends of the double-ended bolt body 1 effectively seal and protect the connection between the bolt end and the threaded sleeve 3. A threaded sleeve 3 is provided on one side of the sealing ring 2 for threaded connection to the double-ended bolt body 1. A protective tube 4 is fixedly provided on one side of the threaded sleeve 3. A circular tube 5 slides along the inner wall of the protective tube 4, and the circular tube 5 is fitted over the double-ended bolt body 1. The protective tube 4 fixed to one side of the threaded sleeve 3 and the internal circular tube 5 provide external protection, reducing external impact on the exposed double-ended bolt body 1 and improving its resistance. The protective capability is enhanced by setting a movable circular tube 5, which, together with the pressing protrusion 8 and the support component 9, limits the movement of the double-headed bolt body 1 at different positions relative to the protective tube 4. This allows for protection of the double-headed bolt body 1 exposed to the outside to varying degrees, further expanding its application range. A guide plate 6 is fixedly provided on one side of the circular tube 5, and a guide groove is provided inside the protective tube 4 to guide and cooperate with the guide plate 6. A sleeve 7 is fixedly provided on one side of the top of the guide plate 6, and the pressing protrusion 8 is slidably provided inside the sleeve 7. The support component 9 is provided inside the sleeve 7 to support the pressing protrusion 8. The support component 9 can support the pressing protrusion 8 and ensure that the pressing protrusion 8 is limited relative to the protective tube 4.

[0025] The support assembly 9 includes a support spring 901, which is fixedly installed at the bottom end of the inner wall of the sleeve 7. A guide ring 902 is fixedly provided at the bottom end of the pressing protrusion 8, and the guide ring 902 is slidably connected to the inner wall of the sleeve 7. The top end of the support spring 901 is fixedly connected to the bottom end of the guide ring 902. A circular groove 903 is provided at the top of the sleeve 7 to cooperate with the movement of the pressing protrusion 8. The support assembly 9 can cooperate with the support spring 901 to support the guide ring 902 and the pressing protrusion 8, so that the round tube 5 is fixed to the outside of the protective tube 4. The circular groove 903 allows the pressing protrusion 8 to move without any restriction.

[0026] Two sealing rings 11 are fixedly provided on the surface of the round tube 5, and a sealing strip is fixedly provided at the connection between the protective tube 4 and the round tube 5; the setting of the two sealing rings 11 and the sealing strip at the connection between the protective tube 4 and the round tube 5 can improve the sealing effect between the protective tube 4 and the round tube 5.

[0027] The protective tube 4 has several arc-shaped grooves 10 on its surface that move in conjunction with the pressing protrusions 8, and a guide groove inside the protective tube 4 that moves in conjunction with the guide plate 6. The multiple arc-shaped grooves 10 can be used to limit the movement of the pressing protrusions 8, making it easy to adjust the position of the round tube 5. The guide groove inside the protective tube 4 that moves in conjunction with the guide plate 6 provides guidance for the movement of the guide plate 6, ensuring that the guide plate 6 and the round tube 5 remain stable during movement.

[0028] A pull cap 14 is fixedly provided at the other end of the round tube 5, and an anti-slip ring is fixedly provided on the surface of the pull cap 14. The pull cap 14 provided at the end of the round tube 5 provides a convenient force application point for the operation of the end of the round tube 5, which facilitates the stretching and movement of the round tube 5. The anti-slip ring on the surface can improve the friction when stretching the pull cap 14.

[0029] A fixing ring 12 is fixedly provided at one end of the round tube 5, and the fixing ring 12 is slidably connected to the protective tube 4; the fixing ring 12 can limit the movement of the round tube 5, and at the same time ensure that the round tube 5 slides on the inner wall of the protective tube 4.

[0030] The sealing ring 2 is made of rubber, and the surface of the threaded sleeve 3 is fixed with several evenly spaced anti-slip ridges 13, the surface of which is chamfered. The rubber sealing ring 2 has good elasticity and sealing performance, and can fit tightly to the connection part, effectively enhancing the protection effect. The anti-slip ridges 13 on the surface of the threaded sleeve 3 can increase the friction when in contact with the outside, making it easy to rotate the threaded sleeve 3 and facilitating installation and disassembly. The chamfered design on the surface of the anti-slip ridges 13 can prevent sharp edges from scratching the operator and improve the safety of operation.

[0031] In use, firstly, the rubber sealing ring 2 needs to be fitted onto both ends of the double-ended bolt body 1. Then, the position of the round tube 5 needs to be adjusted according to the length of the exposed part. This can be achieved by operating the round tube 5. First, press the set pressing protrusion 8 to compress the support spring 901 inside the sleeve 7. Then, the operator holds the pull cap 14 and pulls it away from the protective tube 4. At this time, the round tube 5 slides on the inner wall of the protective tube 4, and the fixing ring 12 moves with the round tube 5 to limit the sliding of the round tube 5 and ensure its sliding stability. During the movement of the round tube 5, the guide plate 6 slides synchronously in the guide groove inside the protective tube 4, and the sleeve 7 moves with the guide plate 6. When it moves to the corresponding arc groove 10, under the support and rebound of the support spring 901, the pressing protrusion 8 and the arc groove 10 are inserted into each other, completing the limitation of the guide plate 6 and the round tube 5. Thus, it is possible to protect the double-ended bolt body 1 with different degrees of exposure as needed.

[0032] Next, using the threaded sleeve 3, combined with the anti-slip convex strip 13 on its surface, the threaded sleeve 3 is rotated to the end of the double-ended bolt body 1 until the threaded sleeve 3 is in close contact with the sealing ring 2 side, thus completing the installation and fixing of the threaded sleeve 3, the protective tube 4 and the round tube 5. This enables the protection of the double-ended bolt body 1 exposed to the outside to varying degrees, further expanding its application range.

[0033] During the relative movement and fixation of the round tube 5 and the protective tube 4, the sealing strip at the connection between the two and the two sealing rings 11 on the surface of the round tube 5 can effectively improve the sealing effect between the protective tube 4 and the round tube 5, and further enhance the protection capability of the internal double-ended bolt body 1. When it is necessary to disassemble the threaded sleeve 3, the anti-slip convex strip 13 on the surface of the threaded sleeve 3 can be used to rotate the threaded sleeve 3 in the opposite direction to remove it from the end of the double-ended bolt body 1. The operation is convenient and safe.

[0034] 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 high-strength double-ended tension bolt, comprising a double-ended bolt body (1), characterized in that, Both ends of the double-ended bolt body (1) are fitted with sealing rings (2). One side of the sealing ring (2) is provided with a threaded sleeve (3) that is threaded to the double-ended bolt body (1). One side of the threaded sleeve (3) is fixedly provided with a protective tube (4). A round tube (5) is slidably provided on the inner wall of the protective tube (4). One side of the round tube (5) is fixedly provided with a guide plate (6). The inside of the protective tube (4) is provided with a guide groove that cooperates with the guide plate (6). One side of the top of the guide plate (6) is fixedly provided with a sleeve (7). The inside of the sleeve (7) is provided with a pressing protrusion (8). The inside of the sleeve (7) is provided with a support assembly (9) that supports the pressing protrusion (8).

2. The high-strength double-ended tension bolt according to claim 1, characterized in that: The sealing ring (2) is made of rubber, and the surface of the threaded sleeve (3) is fixed with a number of evenly spaced anti-slip ridges (13), and the surface of the anti-slip ridges (13) is chamfered.

3. The high-strength double-ended tension bolt according to claim 1, characterized in that: One end of the round tube (5) is fixedly provided with a fixing ring (12), and the fixing ring (12) is slidably connected to the protective tube (4).

4. The high-strength double-ended tension bolt according to claim 1, characterized in that: The other end of the round tube (5) is fixedly provided with a pull cap (14), and the surface of the pull cap (14) is fixedly provided with an anti-slip ring.

5. The high-strength double-ended tension bolt according to claim 1, characterized in that: Two sealing rings (11) are fixedly provided on the surface of the round tube (5), and a sealing strip is fixedly provided at the connection between the protective tube (4) and the round tube (5).

6. The high-strength double-ended tension bolt according to claim 1, characterized in that: The surface of the protective tube (4) is provided with several arc-shaped grooves (10) that move and cooperate with the pressing protrusion (8), and the interior of the protective tube (4) is provided with a guide groove that cooperates with the guide plate (6).

7. The high-strength double-ended tension bolt according to claim 1, characterized in that: The support assembly (9) includes a support spring (901), which is fixedly installed at the bottom end of the inner wall of the sleeve (7). The bottom end of the pressing protrusion (8) is fixedly provided with a guide ring (902), which is slidably connected to the inner wall of the sleeve (7).

8. The high-strength double-ended tension bolt according to claim 7, characterized in that: The top end of the support spring (901) is fixedly connected to the bottom end of the guide ring (902), and the top of the sleeve (7) is provided with a circular groove (903) that moves in conjunction with the pressing protrusion (8).

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