A self-guided bolt structure with a semicircular arc tail end

Abstract

The present invention discloses a self-guiding bolt structure with a semicircular arc tail end, which relates to the technical field of bolt structures. The self-guiding bolt structure with a semicircular arc tail end comprises a threaded rod, and a limiting mechanism comprises a connecting groove, a connecting block, a fixing plate and a limiting thread. Through the limiting thread, before the threaded rod is screwed into the threaded hole inside the nut body, the threaded hole inside the nut body first contacts the limiting thread outside the fixing plate, and the nut body is adjusted so that the limiting thread fits the threaded hole inside the nut body. At this time, the nut body can be rotated to make the threaded rod enter the threaded hole inside the nut body, which facilitates the correct connection of the threaded rod with the threaded hole on the nut body. The limiting thread plays a guiding role, avoiding deviation between threads, which causes the staff to need to reconnect, and at the same time avoids increasing the workload of the staff and avoiding excessive deviation between threads, which causes the threads to be damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt structures, in particular to a self-guided bolt structure with a semicircular arc tail end. Background Art

[0002] The existing semi-circular arc tail end bolt is a bolt with an arc-shaped tail end. The bolt structure generally refers to a steel structure bolt. The steel structure bolt is a high-strength bolt and is also a standard part with good fastening performance. When the bolt is matched with the threaded hole and tightened, if the bolt cannot be correctly perpendicular to the threaded hole, it will cause deviation between the threads, causing the staff to release the connection between the threaded rod and the nut, and the staff needs to reconnect it, which increases the workload of the staff. If the deviation between the threads is too serious, the threads will be damaged. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the present invention provides a self-guided bolt structure with a semicircular arc tail end, which solves the technical problem that deviation between threads occurs, which causes the staff to release the connection between the threaded rod and the nut and need to reconnect them, increasing the workload of the staff. If the deviation between threads is too serious, the threads will be damaged.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A self-guided bolt structure with a semicircular arc tail end comprises a threaded rod, a bolt head is fixedly mounted on the outside of the threaded rod, and a nut body is placed on the end of the threaded rod away from the bolt head. The threaded rod is characterized in that a fixed shaft is provided inside the threaded rod, and a limiting mechanism is provided on a side of the fixed shaft close to the nut body.

[0008] The limiting mechanism includes a connecting groove, a connecting block, a fixing plate and a limiting thread;

[0009] The connecting groove is arranged on one side of the fixed shaft close to the nut body, the connecting block is clamped in the connecting groove, the fixing plate is fixedly installed on the outside of the connecting block, and the limiting thread is arranged on the outside of the fixing plate.

[0010] A built-in groove is provided inside the connecting groove, and an elastic block is fixedly connected inside the built-in groove.

[0011] A circular groove is formed on the outside of the threaded rod;

[0012] The fixed shaft is clamped in the inner part of the circular groove.

[0013] A limiting groove is formed on the outside of the bolt head, and a limiting block is fixedly installed on the end of the fixed shaft away from the connecting groove;

[0014] The limiting block is clamped inside the limiting groove.

[0015] A sliding groove is provided on a side of the limiting block close to the limiting groove, a spring is fixedly installed inside the sliding groove, and a clamping block is fixedly connected to the outside of the spring.

[0016] A moving groove is provided inside the slide groove, and a moving block is fixedly installed outside the clamping block;

[0017] The moving block is slidably connected inside the moving groove.

[0018] A protrusion is fixedly installed inside the limiting groove, and a groove is formed on the outside of the clamping block;

[0019] The protrusion is clamped in the interior of the groove.

[0020] A short groove is provided on one side of the clamping block close to the groove.

[0021] Preferably, a protective box is clamped on the exterior of the limiting block.

[0022] Preferably, a placement groove is provided on the inner side of the protective box, and a spring is fixedly connected to the interior of the placement groove.

[0023] Beneficial effects

[0024] 1. By setting a limiting thread on the outside of the fixing plate and cooperating with the threaded rod, the limiting thread and the thread direction of the outside of the threaded rod are consistent. Before the threaded rod is screwed into the threaded hole inside the nut body, the threaded hole inside the nut body first contacts the limiting thread on the outside of the fixing plate. The nut body is adjusted to make the limiting thread fit with the threaded hole inside the nut body. At this time, the nut body can be rotated to make the threaded rod enter the threaded hole inside the nut body, which is convenient for the threaded rod to be correctly connected with the threaded hole on the nut body. The limiting thread plays a guiding role to avoid deviation between the threads, which causes the staff to need to reconnect, while avoiding increasing the workload of the staff and avoiding excessive deviation between the threads causing the threads to be damaged.

[0025] 2. By setting a connecting groove on the outside of the fixed shaft and cooperating with the connecting block, when there is no need to limit the thread, pull the fixing plate to release the clamping connection between the connecting block and the connecting groove. At this time, the elastic block returns to its original state. When it is necessary to limit the thread, insert the connecting block into the inside of the connecting groove. At this time, as the connecting block is inserted, the elastic block moves toward the inside of the built-in groove until the connecting block enters the inside of the connecting groove. The elastic block reinforces the clamping connection between the connecting block and the connecting groove, which facilitates the disassembly and assembly of the fixing plate and prevents the fixing plate from affecting the normal use of the bolt rod.

[0026] 3. By setting a circular groove on the outside of the threaded rod and cooperating with the fixed shaft, when the threaded part on the outside of the threaded rod is damaged and cannot be used, press the block downward to release the connection between the protrusion and the groove. At this time, push the limiting block to release the clamping connection between the limiting block and the limiting groove. At this time, the fixed shaft moves outward, and the fixing shaft is pulled to release the connection between the fixed shaft and the circular groove. At this time, the connection between the threaded rod and the fixed shaft is released. At this time, a new threaded rod can be clamped on the outside of the original fixed shaft through the circular groove. At this time, the limiting block can reach the threaded rod through the short groove. At this time, press the block downward to make the protrusion enter the inside of the groove, and then push the fixed shaft to make the fixed shaft completely enter the inside of the circular groove. At this time, release the block to connect the protrusion and the groove, thereby increasing the stability of the connection between the fixed shaft and the threaded rod. At this time, the fixed shaft is installed, which is convenient for secondary use of the fixed shaft after the threaded rod is damaged, saving resources.

[0027] 4. By setting a protective box on the outside of the limiting block and cooperating with the spring clip, when the fixed shaft is installed, the protective box is clamped on the outside of the limiting block. As the protective box is clamped on the outside of the limiting block, the spring clip moves into the inside of the placement slot. Since the spring clip is elastic, the connection between the protective box and the limiting block is reinforced. The protective box provides protection for the limiting block and the spring and other structures on the limiting block to prevent excessive dust from adhering to the limiting block and affecting the use of the limiting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.

[0029] Figure 1 It is a structural diagram of the present invention;

[0030] Figure 2 For the present invention Figure 1 Structural diagram of the middle fixed plate;

[0031] Figure 3 For the present invention Figure 2 Structural diagram of the fixed shaft;

[0032] Figure 4 For the present invention Figure 2 Structural diagram of the middle threaded rod;

[0033] Figure 5 For the present invention Figure 2 Structural diagram of the qualifier block.

[0034] Legend: 1. Threaded rod; 2. Bolt head; 3. Nut body; 4. Fixed shaft; 5. Connecting groove; 6. Connecting block; 7. Fixed plate; 8. Limiting thread; 9. Built-in groove; 10. Elastic block; 11. Circular groove; 12. Limiting groove; 13. Limiting block; 14. Slide groove; 15. Spring; 16. Block; 17. Moving groove; 18. Moving block; 19. Protrusion; 20. Groove; 21. Short groove; 22. Protective box; 23. Placement groove; 24. Shrapnel. DETAILED DESCRIPTION

[0035] The embodiment of the present application provides a self-guiding bolt structure with a semicircular arc tail end, which effectively solves the technical problem that deviation between threads occurs, causing the staff to release the connection between the threaded rod and the nut, requiring the staff to reconnect, increasing the workload of the staff and causing the threads to be damaged if the deviation between the threads is too serious.

[0036] Example

[0037] The technical solution in the embodiment of the present application effectively solves the technical problem that the deviation between the threads causes the workers to disconnect the threaded rod and the nut, requiring the workers to reconnect, which increases the workload of the workers and causes the threads to be damaged if the deviation between the threads is too serious. The overall idea is as follows:

[0038] In response to the problems existing in the prior art, the present invention provides a self-guided bolt structure with a semicircular tail end, which includes a threaded rod 1, a bolt head 2 fixedly mounted on the outside of the threaded rod 1, a nut body 3 placed on the end of the threaded rod 1 away from the bolt head 2, a fixed shaft 4 provided inside the threaded rod 1, and a limiting mechanism provided on a side of the fixed shaft 4 close to the nut body 3;

[0039] The limiting mechanism includes a connecting groove 5, a connecting block 6, a fixing plate 7 and a limiting thread 8;

[0040] The connecting groove 5 is opened on the side of the fixed shaft 4 close to the nut body 3, the connecting block 6 is clamped inside the connecting groove 5, the fixing plate 7 is fixedly installed on the outside of the connecting block 6, and the limiting thread 8 is opened on the outside of the fixing plate 7.

[0041] By setting a limiting thread 8 on the outside of the fixing plate 7 and cooperating with the threaded rod 1, the limiting thread 8 is consistent with the thread direction of the outside of the threaded rod 1. Before the threaded rod 1 is screwed into the threaded hole inside the nut body 3, the threaded hole inside the nut body 3 first contacts the limiting thread 8 on the outside of the fixing plate 7. The nut body 3 is adjusted so that the limiting thread 8 fits with the threaded hole inside the nut body 3. At this time, the nut body 3 can be rotated to make the threaded rod 1 enter the threaded hole inside the nut body 3, which is convenient for the threaded rod 1 to be correctly connected with the threaded hole on the nut body 3. The limiting thread 8 plays a guiding role to avoid deviation between the threads, which causes the staff to need to reconnect, while avoiding increasing the workload of the staff and avoiding excessive deviation between the threads, which causes the threads to be damaged.

[0042] A built-in groove 9 is provided inside the connecting groove 5, and an elastic block 10 is fixedly connected to the inside of the built-in groove 9. The elastic block 10 is elastic. At this time, as the connecting block 6 is inserted, the elastic block 10 moves toward the inside of the built-in groove 9 until the connecting block 6 enters the inside of the connecting groove 5. The elastic block 10 reinforces the connection between the connecting block 6 and the connecting groove 5.

[0043] By setting the connecting groove 5 outside the fixed shaft 4 and cooperating with the connecting block 6, when there is no need to limit the thread 8, the fixing plate 7 is pulled to release the clamping connection between the connecting block 6 and the connecting groove 5. At this time, the elastic block 10 returns to its original state. When it is necessary to limit the thread 8, the connecting block 6 is inserted into the inside of the connecting groove 5. At this time, as the connecting block 6 is inserted, the elastic block 10 moves toward the inside of the built-in groove 9 until the connecting block 6 enters the inside of the connecting groove 5. The elastic block 10 strengthens the clamping connection between the connecting block 6 and the connecting groove 5, which facilitates the disassembly and assembly of the fixing plate 7 and prevents the fixing plate 7 from affecting the normal use of the bolt rod.

[0044] A circular groove 11 is formed on the outside of the threaded rod 1;

[0045] The fixed shaft 4 is clamped in the circular groove 11 , which facilitates the assembly and disassembly of the fixed shaft 4 .

[0046] A limiting groove 12 is formed on the outside of the bolt head 2, and a limiting block 13 is fixedly mounted on the end of the fixed shaft 4 away from the connecting groove 5;

[0047] The limiting block 13 is clamped inside the limiting groove 12 , and the limiting block 13 and the limiting groove 12 are connected to limit the position of the fixed shaft 4 in the circular groove 11 to prevent the fixed shaft 4 from rotating inside the circular groove 11 .

[0048] A sliding groove 14 is provided on one side of the limiting block 13 close to the limiting groove 12. A spring 15 is fixedly installed inside the sliding groove 14, and a clamping block 16 is fixedly connected to the outside of the spring 15. Under the action of the spring 15, the clamping block 16 moves upward to reinforce the connection between the limiting block 13 and the limiting groove 12.

[0049] A moving groove 17 is provided inside the slide 14, and a moving block 18 is fixedly installed outside the clamping block 16;

[0050] The moving block 18 is slidably connected to the inside of the moving groove 17 to limit the moving range of the clamping block 16 .

[0051] A protrusion 19 is fixedly installed inside the limiting groove 12, and a groove 20 is formed outside the clamping block 16;

[0052] The protrusion 19 is engaged with the inside of the groove 20 to strengthen the connection between the limiting block 13 and the limiting groove 12 .

[0053] A short slot 21 is provided on one side of the block 16 close to the groove 20 . During installation, the limiting block 13 can reach the outside of the threaded rod 1 through the short slot 21 , making it easy for the worker to press the block 16 to allow the protrusion 19 to enter the inside of the groove 20 .

[0054] When the screw rod 1 is in the state of being damaged, the fixing shaft 4 is loosened and the fixing shaft 4 is released from the groove 20, thereby increasing the stability of the connection between the fixing shaft 4 and the screw rod 1. At this time, the fixing shaft 4 is installed, which is convenient for the secondary use of the fixing shaft 4 after the screw rod 1 is damaged, thereby saving resources.

[0055] The outer portion of the limiting block 13 is clamped with a protective box 22 , which protects the limiting block 13 and structures such as the spring 15 on the limiting block 13 to prevent excessive dust from adhering to the limiting block 13 and affecting the use of the limiting block 13 .

[0056] A placement groove 23 is formed on the inner side of the protection box 22 , and a spring piece 24 is fixedly connected to the interior of the placement groove 23 . Since the spring piece 24 is elastic, it strengthens the connection between the protection box 22 and the limiting block 13 .

[0057] By setting a protective box 22 on the outside of the limiting block 13 and cooperating with the spring clip 24, when the fixed shaft 4 is installed, the protective box 22 is clamped on the outside of the limiting block 13. As the protective box 22 is clamped on the outside of the limiting block 13, the spring clip 24 moves into the inside of the placement groove 23. Since the spring clip 24 is elastic, the connection between the protective box 22 and the limiting block 13 is reinforced. The protective box 22 provides protection for the limiting block 13 and structures such as the spring 15 on the limiting block 13 to prevent excessive dust from adhering to the limiting block 13 and affecting the use of the limiting block 13.

[0058] Working principle:

[0059] In the first step, the staff clamps the threaded rod 1 to the outside of the fixed shaft 4 through the circular groove 11. At this time, the limiting block 13 can reach the outside of the threaded rod 1 through the short groove 21. At this time, the clamping block 16 is pressed downward to make the protrusion 19 enter the inside of the groove 20, and then the fixed shaft 4 is pushed to make the fixed shaft 4 completely enter the inside of the circular groove 11. At this time, the clamping block 16 is released to connect the protrusion 19 and the groove 20, thereby increasing the stability of the connection between the fixed shaft 4 and the threaded rod 1. At this time, the fixed shaft 4 is installed;

[0060] After the threaded rod 1 is correctly connected to the nut body 3, when the limiting thread 8 is no longer needed, the staff can pull the fixing plate 7 to release the clamping of the connecting block 6 and the connecting groove 5, and the elastic block 10 returns to its original state.

[0061] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A self-guided bolt structure with a semicircular arc tail end, comprising a threaded rod (1), a bolt head (2) fixedly mounted on the outside of the threaded rod (1), and a nut body (3) placed at one end of the threaded rod (1) away from the bolt head (2), characterized in that: A fixed shaft (4) is provided inside the threaded rod (1), and a limiting mechanism is provided on a side of the fixed shaft (4) close to the nut body (3); The limiting mechanism includes a connecting groove (5), a connecting block (6), a fixing plate (7), and a limiting thread (8); The connecting groove (5) is formed on a side of the fixed shaft (4) close to the nut body (3), the connecting block (6) is clamped inside the connecting groove (5), the fixing plate (7) is fixedly mounted on the outside of the connecting block (6), and the limiting thread (8) is formed on the outside of the fixing plate (7); The threaded rod (1) is provided with a circular groove (11) on the outside, the fixed shaft (4) is clamped in the inside of the circular groove (11), the bolt head (2) is provided with a limiting groove (12) on the outside, the fixed shaft (4) is fixedly installed with a limiting block (13) at one end away from the connecting groove (5), the limiting block (13) is clamped in the inside of the limiting groove (12), a sliding groove (14) is provided on a side of the limiting block (13) close to the limiting groove (12), a spring (15) is fixedly installed inside the sliding groove (14), a clamping block (16) is fixedly connected to the outside of the spring (15), and a movable groove ( 17), a moving block (18) is fixedly installed on the outside of the card block (16), and the moving block (18) is slidably connected to the inside of the moving groove (17). A protrusion (19) is fixedly installed on the inside of the limiting groove (12). A groove (20) is opened on the outside of the card block (16), and the protrusion (19) is clamped in the inside of the groove (20). A short groove (21) is opened on the side of the card block (16) close to the groove (20). A protective box (22) is clamped on the outside of the limiting block (13), and a placement groove (23) is opened on the inner side of the protective box (22). A spring (24) is fixedly connected to the inside of the placement groove (23).

2. The self-guided bolt structure with a semicircular arc tail end according to claim 1, characterized in that: A built-in groove (9) is provided inside the connection groove (5), and an elastic block (10) is fixedly connected inside the built-in groove (9).

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