Tension adjusting bolt and adjusting method thereof

Abstract

The invention belongs to the technical field of bolts, and discloses a tension-adjustable bolt and an adjusting method thereof.The tension-adjustable bolt comprises an upper screw rod, a lower screw rod is arranged at the bottom end of the upper screw rod, and the upper screw rod and the lower screw rod are connected through an adjusting assembly; wherein the adjusting assembly comprises a connecting shaft installed in the upper screw rod in a sliding mode, the bottom end of the connecting shaft is embedded in the lower screw rod, a spiral groove is formed in the outer wall of the connecting shaft, a sliding block is installed in the spiral groove in a sliding mode, and the sliding block is fixedly installed on the inner wall of the upper screw rod. And then through movement between the upper screw rod and the lower screw rod, the connecting shaft slides out of the upper screw rod, the distance between the upper screw rod and the lower screw rod is adjusted, the fastening performance of connection is enhanced, the upper screw rod and the lower screw rod are connected through the connecting shaft for adjustment, and the adjusting accuracy degree and the adaptability of the screw rods are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bolts, and in particular relates to a tension-adjustable bolt and an adjustment method thereof. Background Art

[0002] Bolts are a common mechanical part, mainly used to connect and fix two or more parts. They are composed of a head and a screw (a cylinder with external threads). They need to be used in conjunction with nuts. By tightening the nuts, tightening force is generated to achieve reliable connection of parts.

[0003] During the operation of mechanical equipment, the tension on the bolts will change due to changes in load. If the tension is too large, it may cause the bolts to break or the connected parts to be damaged; if the tension is too small, the connection may not be firm. Therefore, it is necessary to adjust the bolt tension according to the actual situation to avoid overloading or underloading.

[0004] After searching, such as patent: CN219795803U, a bolt capable of realizing tension adjustment comprises a nut, one side of the nut is movably connected with a clamping structure, the bottom end of the nut is fixedly connected with a gasket, the bottom end of the gasket is fixedly connected with a bolt rod, the bottom end of the bolt rod is movably connected with a connecting thread block, the bottom end of the connecting thread block is movably connected with a guide block, and the top and bottom ends of the connecting thread block are movably connected with a mounting structure. The bolt capable of realizing tension adjustment realizes a firm connection between the connecting thread block and the bolt rod by engaging the clamping block with the inside of the clamping slot and utilizing the magnetic engagement of the magnetic suction rod with the inside of the magnetic suction hole. Then, through the above steps, the installation and fixation between multiple connecting thread blocks and the bolt rod and the guide block respectively can be realized, so that the overall length of the bolt can be changed to realize the adjustment of its overall tension, and the overall structural strength after adjustment is more stable and convenient for use;

[0005] Currently, when adjusting the tension of a bolt, the overall length of the bolt is changed by splicing several threaded blocks, thereby adjusting the overall tension of the bolt. However, since the length of each connecting threaded block is fixed, the adjustable length is limited by the length of the threaded block, which affects the accuracy of the adjustment. Summary of the invention

[0006] The object of the present invention is to provide a tension-adjustable bolt and an adjustment method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above object, the present invention provides the following technical solution: a tension-adjustable bolt, comprising an upper screw rod, a lower screw rod is arranged at the bottom end of the upper screw rod, and the upper screw rod and the lower screw rod are connected by an adjustment assembly;

[0008] Among them, the adjustment component includes a connecting shaft slidably installed inside the upper screw, the bottom end of the connecting shaft is embedded in the lower screw, the outer wall of the connecting shaft is provided with a spiral groove, the inside of the spiral groove is slidably installed with a slider, and the slider is fixedly installed on the inner wall of the upper screw.

[0009] As a further technical solution of the present invention, a first rotating plate is fixedly connected to the bottom end of the connecting shaft, and the first rotating plate is rotatably installed inside the lower screw rod.

[0010] As a further technical solution of the present invention, a fixed shaft is fixedly installed on the top of the connecting shaft, a connecting block is fixedly installed on the outer wall of the fixed shaft, a sleeve is sleeved on the outer wall of the connecting block, a second rotating plate is fixedly installed on the top of the sleeve, and the second rotating plate is installed inside the upper screw through a limiting assembly.

[0011] As a further technical solution of the present invention, the limit assembly includes a limit hole opened inside the second rotating plate, a limit rod is embedded in the limit hole, the limit rod is fixedly installed on the bottom end of the mounting plate, the top of the mounting plate is fixedly connected with a connecting rod, the top of the connecting rod is fixedly installed with a ring, and a pull ring is installed inside the ring.

[0012] As a further technical solution of the present invention, the limiting holes are evenly arranged in a ring array.

[0013] As a further technical solution of the present invention, the mounting plate is slidably mounted inside the upper screw rod, and a spring is provided on the top of the mounting plate.

[0014] As a further technical solution of the present invention, a limit block is fixedly installed on the outer wall of the connecting rod, and the limit block is slidably installed inside the upper screw rod.

[0015] As a further technical solution of the present invention, the sleeve ring is rotatably connected to the pull ring, the pull ring is embedded in the placement groove, and the placement groove is opened in the upper screw.

[0016] As a further technical solution of the present invention, a magnetic block is fixedly connected to one side of the pull ring, and the magnetic block is magnetically connected to the inner wall of the placement groove.

[0017] A method for adjusting a tension-adjustable bolt comprises the following steps:

[0018] S1: When adjusting the tension, first pull the pull ring out of the placement groove, and then pull the pull ring to the side away from the upper screw rod. The movement of the pull ring drives the movement of the sleeve ring, the movement of the sleeve ring drives the movement of the connecting rod, the movement of the connecting rod drives the movement of the mounting plate, and the movement of the mounting plate drives the movement of the limit rod, so that the limit rod slides out of the limit hole, thereby releasing the limit on the second rotating plate;

[0019] S2: Then the pull ring can continue to move outward to drive the upper screw to move to the side away from the lower screw to adjust the distance;

[0020] S3: At the same time, the movement of the upper screw drives the slider to slide on the inner wall of the spiral groove and causes the connecting shaft to rotate. The rotation of the connecting shaft drives the rotation of the fixed shaft. The rotation of the fixed shaft drives the rotation of the connecting block. The rotation of the connecting block drives the rotation of the sleeve. The rotation of the sleeve drives the rotation of the second rotating plate.

[0021] S4: After adjusting the distance between the upper screw and the lower screw, loosen the pull ring, release the elastic potential energy through the spring to push the mounting plate down and reset, so that the limit rod is embedded in the limit hole, and the second rotating plate is limited so that it cannot rotate, and the adjustment is completed.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention, through the setting of the adjustment component, first releases the limit through the limit component when adjusting the tension, and then slides the connecting shaft out of the upper screw through the movement between the upper screw and the lower screw, and adjusts the distance between the upper screw and the lower screw, which helps to enhance the tightness of the connection and avoids the problem that when the current bolt is used to adjust the tension, the length of each connecting thread block is fixed, resulting in the adjustment length being limited by the length of the thread block, thereby affecting the accuracy of the adjustment. The upper screw and the lower screw are connected by the connecting shaft for adjustment, which improves the accuracy of the adjustment and the adaptability of the screw.

[0024] 2. The present invention is provided with a limit assembly. When adjusting the tension, the pull ring is first pulled outward, and the movement of the pull ring drives the movement of the sleeve ring, the movement of the sleeve ring drives the movement of the connecting rod, the movement of the connecting rod drives the movement of the mounting plate, and the movement of the mounting plate drives the movement of the limit rod, so that the limit rod slides out of the limiting hole to release the limit on the second rotating plate, and then the adjustment assembly is used for adjustment; after the tension is adjusted, the limit rod is embedded in the limiting hole to limit the second rotating plate, thereby preventing the second rotating plate from rotating and improving stability during use.

[0025] 3. The present invention sets a spring so that when the tension is adjusted, the mounting plate moves upward to squeeze the spring, causing the spring to deform under force to store elastic potential energy. After adjustment, the pull ring is loosened, and the elastic potential energy released by the spring pushes the mounting plate downward to reset, thereby allowing the limit rod to be embedded in the limit hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 4 It is a schematic diagram of the structural cross-section of the upper screw and the lower screw of the present invention;

[0030] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0031] Figure 6 It is a schematic diagram of the structure of the connecting shaft of the present invention.

[0032] In the figure: 1. upper screw; 2. lower screw; 3. connecting shaft; 4. spiral groove; 5. slider; 6. first rotating plate; 7. fixed shaft; 8. connecting block; 9. sleeve; 10. second rotating plate; 11. limiting hole; 12. limiting rod; 13. mounting plate; 14. spring; 15. connecting rod; 16. collar; 17. pull ring; 18. placement groove; 19. magnetic block; 20. limiting block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 6 As shown, in an embodiment of the present invention, a tension-adjustable bolt comprises an upper screw rod 1, a lower screw rod 2 is disposed at the bottom end of the upper screw rod 1, and the upper screw rod 1 and the lower screw rod 2 are connected via an adjustment assembly;

[0035] Among them, the adjustment component includes a connecting shaft 3 slidably installed inside the upper screw 1, the bottom end of the connecting shaft 3 is embedded in the lower screw 2, the outer wall of the connecting shaft 3 is provided with a spiral groove 4, and a slider 5 is slidably installed inside the spiral groove 4, and the slider 5 is fixedly installed on the inner wall of the upper screw 1.

[0036] When adjusting the tension, first release the limit through the limit assembly, then move the upper screw 1 and the lower screw 2 to make the connecting shaft 3 slide out of the upper screw 1, and adjust the distance between the upper screw 1 and the lower screw 2, which helps to enhance the tightness of the connection and avoids the problem that when the current bolts are used to adjust the tension, the length of each connecting thread block is fixed, resulting in the adjustment length being limited by the length of the thread block, thereby affecting the accuracy of the adjustment. The upper screw 1 and the lower screw 2 are connected for adjustment through the connecting shaft 3, which improves the accuracy of the adjustment and the adaptability of the screw.

[0037] like Figure 2 , Figure 4 and Figure 6 As shown, the bottom end of the connecting shaft 3 is fixedly connected with a first rotating plate 6 , and the first rotating plate 6 is rotatably mounted inside the lower screw rod 2 .

[0038] When the tension is adjusted, the connecting shaft 3 drives the first rotating plate 6 to rotate inside the lower screw rod 2 to prevent the lower screw rod 2 from being affected, thereby improving the stability of the bolt.

[0039] like Figure 6 As shown, a fixed shaft 7 is fixedly installed on the top of the connecting shaft 3, a connecting block 8 is fixedly installed on the outer wall of the fixed shaft 7, a sleeve 9 is sleeved on the outer wall of the connecting block 8, a second rotating plate 10 is fixedly installed on the top of the sleeve 9, and the second rotating plate 10 is installed inside the upper screw 1 through a limiting assembly.

[0040] A sliding groove for the connecting block 8 to slide is provided inside the sleeve 9 . During adjustment, the connecting block 8 slides inside the sleeve 9 , and the rotation of the fixed shaft 7 can drive the rotation of the sleeve 9 through the connection of the connecting block 8 .

[0041] like Figures 1 to 6 As shown, the limiting assembly includes a limiting hole 11 opened inside the second rotating plate 10, a limiting rod 12 is embedded inside the limiting hole 11, the limiting rod 12 is fixedly installed on the bottom end of the mounting plate 13, the top of the mounting plate 13 is fixedly connected with a connecting rod 15, the top of the connecting rod 15 is fixedly installed with a ring 16, and a pull ring 17 is installed inside the ring 16.

[0042] When adjusting the tension, first pull the pull ring 17 outward, the movement of the pull ring 17 drives the movement of the sleeve ring 16, the movement of the sleeve ring 16 drives the movement of the connecting rod 15, the movement of the connecting rod 15 drives the movement of the mounting plate 13, the movement of the mounting plate 13 drives the movement of the limiting rod 12, so that the limiting rod 12 slides out of the limiting hole 11, releases the limit on the second rotating plate 10, and then adjusts through the adjustment assembly;

[0043] After the tension is adjusted, the limiting rod 12 is embedded in the limiting hole 11 to limit the second rotating plate 10 to prevent the second rotating plate 10 from rotating, thereby improving stability during use.

[0044] like Figure 6 As shown, the limiting holes 11 are evenly arranged in a ring array.

[0045] The limiting hole 11 can limit the second rotating plate 10 at multiple angles.

[0046] like Figures 1 to 6 As shown, the mounting plate 13 is slidably mounted inside the upper screw rod 1 , and a spring 14 is provided at the top end of the mounting plate 13 .

[0047] When adjusting the tension, the mounting plate 13 moves upward to squeeze the spring 14, causing the spring 14 to deform under force to store elastic potential energy. After adjustment, the pull ring 17 is loosened, and the elastic potential energy released by the spring 14 pushes the mounting plate 13 downward to reset, thereby allowing the limit rod 12 to embed into the limit hole 11.

[0048] like Figures 1 to 6 As shown, a limit block 20 is fixedly installed on the outer wall of the connecting rod 15 , and the limit block 20 is slidably installed inside the upper screw rod 1 .

[0049] The connecting rod 15 is prevented from rotating, thereby improving stability.

[0050] like Figure 3 and Figure 5 As shown, the sleeve ring 16 is rotatably connected to the pull ring 17 , and the pull ring 17 is embedded in the placement groove 18 , and the placement groove 18 is opened in the upper screw rod 1 .

[0051] After use, the pull ring 17 can be rotated to make the pull ring 17 fit with the side wall of the upper screw 1 to prevent the pull ring 17 from vertically affecting the use of the screw;

[0052] The pull ring 17 is embedded in the placement groove 18, so that the end of the upper screw rod 1 is flat, improving the aesthetics.

[0053] like Figure 3 As shown, a magnetic block 19 is fixedly connected to one side of the pull ring 17 , and the magnetic block 19 is magnetically connected to the inner wall of the placement groove 18 .

[0054] The pull ring 17 is stably embedded in the placement groove 18 through the magnetic connection between the magnetic block 19 and the upper screw rod 1, and will not slide out when the screw rod moves.

[0055] A method for adjusting a tension-adjustable bolt comprises the following steps:

[0056] S1: When adjusting the tension, first pull the pull ring 17 out of the placement groove 18, and then pull the pull ring 17 to the side away from the upper screw rod 1, the movement of the pull ring 17 drives the movement of the sleeve ring 16, the movement of the sleeve ring 16 drives the movement of the connecting rod 15, the movement of the connecting rod 15 drives the movement of the mounting plate 13, and the movement of the mounting plate 13 drives the movement of the limiting rod 12, so that the limiting rod 12 slides out of the limiting hole 11, and the limit on the second rotating plate 10 is released;

[0057] S2: The pull ring 17 can then continue to move outward to drive the upper screw 1 to move away from the lower screw 2 to adjust the distance;

[0058] S3: At the same time, the movement of the upper screw 1 drives the slider 5 to slide on the inner wall of the spiral groove 4 and causes the connecting shaft 3 to rotate. The rotation of the connecting shaft 3 drives the rotation of the fixed shaft 7. The rotation of the fixed shaft 7 drives the rotation of the connecting block 8. The rotation of the connecting block 8 drives the rotation of the sleeve 9. The rotation of the sleeve 9 drives the rotation of the second rotating plate 10.

[0059] S4: After adjusting the distance between the upper screw rod 1 and the lower screw rod 2, the pull ring 17 is loosened, and the elastic potential energy released by the spring 14 pushes the mounting plate 13 to move down and reset, so that the limiting rod 12 is embedded in the limiting hole 11, and the second rotating plate 10 is limited so that it cannot rotate, and the adjustment is completed.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension-adjustable bolt, comprising an upper screw rod (1), characterized in that: A lower screw rod (2) is disposed at the bottom end of the upper screw rod (1), and the upper screw rod (1) and the lower screw rod (2) are connected via an adjustment assembly; The adjustment assembly comprises a connecting shaft (3) slidably mounted inside the upper screw rod (1), the bottom end of the connecting shaft (3) is embedded inside the lower screw rod (2), the outer wall of the connecting shaft (3) is provided with a spiral groove (4), a sliding block (5) is slidably mounted inside the spiral groove (4), and the sliding block (5) is fixedly mounted on the inner wall of the upper screw rod (1).

2. A tension-adjustable bolt according to claim 1, characterized in that: The bottom end of the connecting shaft (3) is fixedly connected to a first rotating plate (6), and the first rotating plate (6) is rotatably mounted inside the lower screw rod (2).

3. A tension-adjustable bolt according to claim 1, characterized in that: A fixed shaft (7) is fixedly mounted on the top end of the connecting shaft (3); a connecting block (8) is fixedly mounted on the outer wall of the fixed shaft (7); a sleeve (9) is sleeved on the outer wall of the connecting block (8); a second rotating plate (10) is fixedly mounted on the top end of the sleeve (9); and the second rotating plate (10) is mounted inside the upper screw rod (1) via a limiting assembly.

4. A tension-adjustable bolt according to claim 3, characterized in that: The limiting assembly comprises a limiting hole (11) provided inside the second rotating plate (10), a limiting rod (12) being embedded inside the limiting hole (11), the limiting rod (12) being fixedly mounted on the bottom end of a mounting plate (13), the top end of the mounting plate (13) being fixedly connected with a connecting rod (15), the top end of the connecting rod (15) being fixedly mounted with a sleeve (16), the sleeve (16) being internally mounted with a pull ring (17).

5. A tension-adjustable bolt according to claim 4, characterized in that: The limiting holes (11) are evenly arranged in a ring array.

6. A tension-adjustable bolt according to claim 4, characterized in that: The mounting plate (13) is slidably mounted inside the upper screw rod (1), and a spring (14) is provided at the top end of the mounting plate (13).

7. A tension-adjustable bolt according to claim 4, characterized in that: A limit block (20) is fixedly mounted on the outer wall of the connecting rod (15), and the limit block (20) is slidably mounted inside the upper screw rod (1).

8. The tension-adjustable bolt according to claim 4, characterized in that: The sleeve ring (16) is rotatably connected to the pull ring (17), and the pull ring (17) is embedded in the interior of the placement groove (18), and the placement groove (18) is opened in the interior of the upper screw rod (1).

9. A tension-adjustable bolt according to claim 8, characterized in that: A magnetic block (19) is fixedly connected to one side of the pull ring (17), and the magnetic block (19) is magnetically connected to the inner wall of the placement groove (18).

10. A method for adjusting a tension-adjustable bolt, the method being applicable to the tension-adjustable bolt according to claims 1 to 9, characterized in that: The following steps are involved: S1: When adjusting the tension, first pull the pull ring (17) out of the placement groove (18), and then pull the pull ring (17) to the side away from the upper screw rod (1), the movement of the pull ring (17) drives the movement of the sleeve ring (16), the movement of the sleeve ring (16) drives the movement of the connecting rod (15), the movement of the connecting rod (15) drives the movement of the mounting plate (13), and the movement of the mounting plate (13) drives the movement of the limiting rod (12), so that the limiting rod (12) slides out of the limiting hole (11), thereby releasing the limit on the second rotating plate (10); S2: The pull ring (17) can then continue to move outward to drive the upper screw (1) to move away from the lower screw (2) to adjust the distance; S3: At the same time, the movement of the upper screw (1) drives the slider (5) to slide on the inner wall of the spiral groove (4) and causes the connecting shaft (3) to rotate. The rotation of the connecting shaft (3) drives the rotation of the fixed shaft (7). The rotation of the fixed shaft (7) drives the rotation of the connecting block (8). The rotation of the connecting block (8) drives the rotation of the sleeve (9). The rotation of the sleeve (9) drives the rotation of the second rotating plate (10). S4: After adjusting the distance between the upper screw rod (1) and the lower screw rod (2), the pull ring (17) is loosened, and the elastic potential energy is released by the spring (14) to push the mounting plate (13) downward to reset, so that the limiting rod (12) is embedded in the limiting hole (11), limiting the second rotating plate (10) so that it cannot rotate, and the adjustment is completed.

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