A locking bolt

Abstract

The present invention discloses a locking bolt, including a screw rod, a nut is provided on the top outer wall of the screw rod, a matching groove is provided on the top outer wall of the nut, the cross section of the matching groove is a regular hexagon, a locking assembly and a lifting assembly are provided at the bottom end of the screw rod, a positioning assembly for fixing the locking assembly is provided inside the matching groove, and a clamping assembly for fixing the lifting assembly is provided at the bottom of the matching groove. In the present invention, when the lock between the sleeve and the connecting column is released, the third spring in the compressed state in the first fixed tube will be reset immediately, so that the movable block can be pushed to the bottom of the second fixed tube, and with the movement of the movable block, the locking ball in the receiving groove can be pushed out from the through hole, thereby expanding the width of the entire second fixed tube, and then can play a blocking role in the process of the entire screw rod rising and falling due to vibration, thereby ensuring the locking effect of the entire screw rod.

Description

Technical Field

[0001] The present invention relates to the technical field of bolts, and in particular to a locking bolt. Background Art

[0002] Bolts are a common mechanical part. Bolts are usually a type of fastener consisting of a head (nut) and a screw (a cylinder with external threads), used to fasten two parts with holes. This type of connection is called a bolt connection.

[0003] At present, when two sets of workpieces are fastened together by bolts, the vibrations generated by the mechanical equipment during the operation of the workpieces will be transmitted to the connection parts, so that the bolts are constantly subjected to small dynamic forces. Long-term vibrations will gradually weaken the pre-tightening force of the bolts, causing the bolts to loosen, so that the two sets of workpieces are no longer in a fastened connection state, which cannot meet people's demand for bolts. Therefore, a locking bolt is urgently needed to solve the above problems. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes a locking bolt to overcome the above technical problems existing in the existing related art.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A locking bolt comprises a screw rod, a nut is arranged on the top outer wall of the screw rod, a matching groove is opened on the top outer wall of the nut, and the cross section of the matching groove is a regular hexagon;

[0007] The bottom end of the screw rod is provided with a locking assembly and a lifting assembly;

[0008] A positioning assembly for fixing the locking assembly is arranged inside the matching groove;

[0009] A clamping assembly for fixing the lifting assembly is provided at the bottom of the matching groove;

[0010] The locking assembly is provided at a first fixed tube at the bottom of the screw rod, the bottom end of the first fixed tube is fixedly connected to a second fixed tube, the inner diameter of the second fixed tube is larger than that of the first fixed tube, the circumferential inner wall of the first fixed tube is fixedly connected to a third partition plate, the bottom inner wall of the third partition plate is fixedly connected to a third spring, the end of the third spring away from the third partition plate is fixedly connected to a movable block, and the movable block is located inside the second fixed tube;

[0011] The movable block includes a first conical portion, a second cylindrical portion and a second conical portion, the second cylindrical portion is located in the middle of the first conical portion and the second conical portion, the circumferential outer walls of the first conical portion, the second cylindrical portion and the second conical portion are surrounded by an annular groove, a locking ball is arranged inside the annular groove, a through hole is opened on the circumferential outer wall of the second fixed tube, the locking ball cooperates with the through hole, a connecting column is fixedly connected to the top outer wall of the movable block, and the connecting column passes through the middle of the third partition plate at one end away from the movable block.

[0012] Furthermore, a receiving groove is provided on the circumferential inner wall of the second fixing tube, the circumferential outer wall of the locking ball contacts the circumferential inner wall of the receiving groove, and the receiving groove is communicated with the through hole.

[0013] Furthermore, the lifting assembly includes a spring seat fixedly connected to the top outer wall of the first fixed tube, a second spring is fixedly connected to the interior of the spring seat, a cavity is opened inside the screw rod, the cavity is communicated with the matching groove, a second partition is fixedly connected to the circumferential inner wall of the cavity, and one end of the second spring away from the spring seat is fixedly connected to the bottom outer wall of the second partition.

[0014] Further, one end of the first fixing tube away from the second fixing tube is located inside the cavity, and one end of the first fixing tube is slidably connected to the cavity.

[0015] Furthermore, a sleeve is fixedly connected to the top outer wall of the third partition, one end of the connecting column passes through the inside of the sleeve, the center of the sleeve is the same as the center of the connecting column, and a second circular hole is opened in the middle of the second partition, and one end of the sleeve passes through the inside of the second circular hole.

[0016] Furthermore, a first partition is fixedly connected to the circumferential inner wall of the cavity, a first circular hole is opened in the middle of the first partition, and one end of the sleeve is extended from the inside of the first circular hole.

[0017] Furthermore, the clamping assembly includes a rotating groove opened on the inner wall of the bottom of the matching groove, the inner walls on both sides of the rotating groove are rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a rotating roller, the circumferential outer wall of the rotating roller is fixedly connected with a locking plate, the circumferential outer wall of the sleeve is provided with a locking groove, and one end of the locking plate is located inside the locking groove.

[0018] Furthermore, a first spring is fixedly connected to the circumferential inner wall of the cavity, and one end of the first spring away from the circumferential inner wall of the cavity is fixedly connected to an outer wall of one side of the locking plate.

[0019] Furthermore, the positioning assembly includes a second circular groove opened inside the nut, a rotating rod is rotatably connected inside the second circular groove, the rotating rod includes a first cylindrical portion and a threaded portion, a threaded groove is opened on the circumferential outer wall of the connecting column, the threaded portion and the threaded groove are threadedly connected, a first circular groove is opened on the circumferential outer wall of the sleeve, one end of the first cylindrical portion passes through the inside of the first circular groove, a movable groove is opened inside the nut, the movable groove is connected with the matching groove, the rotating rod is located inside the movable groove, a sliding groove is opened on one side outer wall of the nut, and the sliding groove is connected with the movable groove.

[0020] Furthermore, one end of the rotating rod extending to the outside of the nut is fixedly connected to a rotating block, and the circumferential outer wall of the rotating block is provided with anti-slip grooves which are equidistantly distributed in a circle.

[0021] Beneficial effects of the present invention:

[0022] The locking bolt provided by the present invention has a locking assembly and a positioning assembly provided. When a worker turns the hexagonal handle, the nut and the screw can be driven to rotate, thereby realizing the fastening and fixation of the upper workpiece and the lower workpiece. When the fixing work is completed, the worker first turns the rotating block to separate the threaded portion at one end of the rotating rod from the thread groove, and finally pulls the rotating rod out from the matching groove, thereby releasing the lock between the sleeve and the connecting column. When the lock between the sleeve and the connecting column is released, the third spring in the compressed state in the first fixing tube will immediately reset, thereby being able to push the movable block to the bottom of the second fixing tube. As the movable block moves, the locking ball in the receiving groove can be pushed out of the through hole, thereby expanding the width of the entire second fixing tube, and then being able to block the process of the entire screw rising and falling off due to vibration, thereby ensuring the locking effect of the entire screw.

[0023] The present invention provides a locking bolt, which has a lifting assembly provided. When the screw rod is tightened and fixed by the hexagonal handle, the staff pulls out the hexagonal handle located inside the matching groove. At this time, the pressure on the top of the sleeve is instantly released, so that the second spring fixedly connected to the bottom outer wall of the second partition plate in a stretched state will immediately restore its deformation, thereby being able to pull the entire first fixed tube upward. In the process of pulling the first fixed tube upward, the locking ball will also move upward with the second fixed tube until the locking ball is pressed against the bottom outer wall of the workpiece below, thereby avoiding any loose gap between the locking ball and the bottom outer wall of the workpiece below, thereby further improving the locking ability of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall front structure of the present invention.

[0026] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the nut of the present invention.

[0028] Figure 4 It is a top view of the nut of the present invention.

[0029] Figure 5 It is a schematic diagram of the overall half-section structure of the present invention.

[0030] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of B.

[0031] Figure 7 It is a schematic diagram of the overall cross-sectional plan structure of the screw rod after being tightened by a hexagonal handle in the present invention.

[0032] In the figure:

[0033] 1. Screw; 2. Nut; 3. Matching groove; 4. First fixed tube; 5. Second fixed tube; 6. Through hole; 7. Sleeve; 8. Connecting column; 9. Rotating groove; 10. Rotating roller; 11. Locking plate; 12. Threaded part; 13. First cylindrical part; 14. Rotating block; 15. Slide; 16. Rotating rod; 17. Cavity; 18. First spring; 19. Locking groove; 20. Threaded groove; 21. First cylindrical groove; 22. Second Circular groove; 23, movable groove; 24, first partition; 25, first circular hole; 26, second partition; 27, second circular hole; 28, second spring; 29, spring seat; 30, third partition; 31, movable block; 32, first frustum; 33, second cylindrical portion; 34, second frustum; 35, locking ball; 36, third spring; 37, storage groove; 38, hexagonal handle; 39, upper workpiece; 40, lower workpiece. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying 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 belong to the scope of protection of the present invention.

[0035] See also Figure 1-7 A locking bolt comprises a screw rod 1, a nut 2 is arranged on the top outer wall of the screw rod 1, a matching groove 3 is opened on the top outer wall of the nut 2, and the cross section of the matching groove 3 is a regular hexagon;

[0036] The bottom end of the screw rod 1 is provided with a locking assembly and a lifting assembly;

[0037] A positioning assembly for fixing the locking assembly is arranged inside the matching groove 3;

[0038] A clamping assembly for fixing the lifting assembly is provided at the bottom of the matching groove 3;

[0039] The locking assembly includes a first fixed tube 4 disposed at the bottom of the screw rod 1, a second fixed tube 5 is fixedly connected to the bottom end of the first fixed tube 4, the inner diameter of the second fixed tube 5 is larger than that of the first fixed tube 4, a third partition plate 30 is fixedly connected to the inner wall of the circumference of the first fixed tube 4, a third spring 36 is fixedly connected to the inner wall of the bottom of the third partition plate 30, and a movable block 31 is fixedly connected to one end of the third spring 36 away from the third partition plate 30, and the movable block 31 is located inside the second fixed tube 5;

[0040] The movable block 31 includes a first conical portion 32, a second cylindrical portion 33 and a second conical portion 34. The second cylindrical portion 33 is located in the middle of the first conical portion 32 and the second conical portion 34. The circumferential outer walls of the first conical portion 32, the second cylindrical portion 33 and the second conical portion 34 are surrounded by an annular groove, and a locking ball 35 is arranged inside the annular groove. A through hole 6 is opened on the circumferential outer wall of the second fixed tube 5, and the locking ball 35 cooperates with the through hole 6. A connecting column 8 is fixedly connected to the top outer wall of the movable block 31, and the end of the connecting column 8 away from the movable block 31 passes through the middle of the third partition plate 30. When the bottom end of the hexagonal handle 38 contacts the bottom inner wall of the matching groove 3, the staff rotates the hexagonal handle 38 to drive the nut 2 and the screw 1 to rotate again, thereby realizing the upper workpiece 39 and the lower workpiece 39. The fastening and fixing of the component 40, when the fixing work is completed, the staff first rotates the rotating block 14 to separate the threaded portion 12 at one end of the rotating rod 16 from the thread groove 20, and finally pulls the rotating rod 16 out of the matching groove 3, thereby releasing the lock between the sleeve 7 and the connecting column 8. When the lock between the sleeve 7 and the connecting column 8 is released, the third spring 36 in the compressed state in the first fixed tube 4 will be immediately reset, so that the movable block 31 can be pushed to the bottom of the second fixed tube 5. With the movement of the movable block 31, the locking ball 35 in the receiving groove 37 can be pushed out from the through hole 6, thereby expanding the width of the entire second fixed tube 5, and then it can play a blocking role in the process of the entire screw 1 rising and falling due to vibration, thereby ensuring the locking effect of the entire screw 1.

[0041] A receiving groove 37 is formed on the circumferential inner wall of the second fixing tube 5 . The circumferential outer wall of the locking ball 35 contacts the circumferential inner wall of the receiving groove 37 . The receiving groove 37 is communicated with the through hole 6 .

[0042] The lifting assembly includes a spring seat 29 fixedly connected to the top outer wall of the first fixed tube 4, a second spring 28 is fixedly connected to the inside of the spring seat 29, a cavity 17 is opened inside the screw 1, the cavity 17 is connected to the matching groove 3, a second partition 26 is fixedly connected to the circumferential inner wall of the cavity 17, one end of the second spring 28 away from the spring seat 29 is fixedly connected to the bottom outer wall of the second partition 26, the first fixed tube 4 away from the second fixed tube 5 One end is located inside the cavity 17, one end of the first fixed tube 4 is slidably connected to the cavity 17, a sleeve 7 is fixedly connected to the top outer wall of the third partition 30, one end of the connecting column 8 passes through the inside of the sleeve 7, the center of the sleeve 7 is the same as the center of the connecting column 8, and the second A second circular hole 27 is opened in the middle of the partition 26, and one end of the sleeve 7 passes through the inside of the second circular hole 27. The staff pulls out the hexagonal handle 38 located in the matching groove 3. At this time, the pressure on the top of the sleeve 7 is instantly released, so the second spring 28 fixedly connected to the bottom outer wall of the second partition 26 in a stretched state will immediately restore its deformation, thereby being able to pull the entire first fixed tube 4 upward. In the process of pulling the first fixed tube 4 upward, the locking ball 35 will also move upward with the second fixed tube 5 until the locking ball 35 is pressed against the bottom outer wall of the workpiece below, thereby avoiding any loose gap between the locking ball 35 and the bottom outer wall of the workpiece below, further improving the locking ability of the bolt.

[0043] A first partition plate 24 is fixedly connected to the circumferential inner wall of the cavity 17, and a first circular hole 25 is opened in the middle of the first partition plate 24. One end of the sleeve 7 passes through the first circular hole 25 from the inside of the first circular hole 25 to ensure the stability of the sleeve 7 during the lifting process, playing a good guiding and limiting role.

[0044] The clamping assembly includes a rotating groove 9 provided on the inner wall at the bottom of the matching groove 3, and the inner walls on both sides of the rotating groove 9 are rotatably connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a rotating roller 10, and the circumferential outer wall of the rotating roller 10 is fixedly connected with a locking plate 11. A locking groove 19 is provided on the circumferential outer wall of the sleeve 7, and one end of the locking plate 11 is located inside the locking groove 19. A first spring 18 is fixedly connected to the circumferential inner wall of the cavity 17, and one end of the first spring 18 away from the circumferential inner wall of the cavity 17 is fixedly connected to the outer wall of one side of the locking plate 11. In the initial state where the bolt is not locked, one end of the locking plate 11 is clamped in the locking groove 19, thereby preventing the second spring 28 in the stretched state from resetting and pushing the sleeve 7 upward.

[0045] The positioning assembly includes a second circular groove 22 opened inside the nut 2, and the second circular groove 22 is rotatably connected inside the rotating rod 16, and the rotating rod 16 includes a first cylindrical portion 13 and a threaded portion 12. A threaded groove 20 is opened on the circumferential outer wall of the connecting column 8, and the threaded portion 12 is threadedly connected to the threaded groove 20. A first circular groove 21 is opened on the circumferential outer wall of the sleeve 7, and one end of the first cylindrical portion 13 passes through the inside of the first circular groove 21. A movable groove 23 is opened inside the nut 2, and the movable groove 23 is connected to the matching groove 3. The rotating rod 16 is located inside the movable groove 23, and a sliding groove 15 is opened on one side outer wall of the nut 2, and the sliding groove 15 is connected to the movable groove 23. When the fixing work is completed, the staff first rotates the rotating block 14 to separate the threaded portion 12 at one end of the rotating rod 16 from the threaded groove 20, and finally pulls the rotating rod 16 out of the matching groove 3, thereby releasing the lock between the sleeve 7 and the connecting column 8.

[0046] One end of the rotating rod 16 extending to the outside of the nut 2 is fixedly connected to the rotating block 14. The circumferential outer wall of the rotating block 14 is provided with anti-slip grooves distributed in a circular shape at equal distances, which facilitates the staff to better rotate the rotating rod 16 to separate the threaded portion 12 from the thread groove 20.

[0047] In summary, with the help of the above technical solution of the present invention, when the staff needs to fix the two workpieces, they can first manually rotate the nut 2, and when the nut 2 rotates, it can drive the screw 1 to rotate together, and the screw 1 will mesh with the threaded hole opened in the lower workpiece 40. When the staff rotates the nut 2, the threaded portion 12 of the rotating rod 16 is in a meshing state with the thread groove 20 at the end of the connecting column 8, thereby ensuring that the sleeve 7 and the connecting column 8 always maintain stability during the rotation of the screw 1;

[0048] When the staff manually achieves the initial bolt fixation of the two workpieces and cannot rotate them, the staff can insert one end of the external hexagonal handle 38 into the matching groove 3, and press the hexagonal handle 38 downward to make its bottom end contact with the bottom inner wall of the matching groove 3. In the process of pressing the hexagonal handle 38 downward, the pressure applied by the staff on the end of the hexagonal handle 38 will be transmitted to the top of the sleeve 7 and the connecting column 8, so that the sleeve 7 and the connecting column 8 can be pressed down to a position where the end is flush with the bottom of the matching groove 3. When the connecting column 8 is subjected to the downward pressure, the rotating rod 16 will also rotate accordingly. The sleeve 7 and the connecting column 8 are lowered together, and the sleeve 7 and the connecting column 8 are always kept in a fixed state. During the process of pressing the sleeve 7 downward, the locking plate 11 can be pressed open, so that one end of the locking plate 11 is disengaged from the locking groove 19, thereby releasing the locking function of the multiple sets of locking plates 11 on the sleeve 7. When the locking plate 11 is pressed open, the first spring 18 in the stretched state will be immediately reset, so that the locking plate 11 can be pulled to move in the direction close to the inner wall of the cavity 17. At this time, the end of the locking plate 11 is no longer in contact with the circumferential outer wall of the sleeve 7, so that the subsequent vertical movement of the sleeve 7 will not be hindered;

[0049] When the bottom end of the hexagonal handle 38 contacts the bottom inner wall of the matching groove 3, the staff rotates the hexagonal handle 38 to drive the nut 2 and the screw rod 1 to rotate again, thereby achieving the fastening and fixing of the upper workpiece 39 and the lower workpiece 40. When the fixing work is completed, the staff first rotates the rotating block 14 to separate the threaded portion 12 at one end of the rotating rod 16 from the threaded groove 20, and finally pulls the rotating rod 16 out of the matching groove 3, thereby releasing the lock between the sleeve 7 and the connecting column 8. When the lock between the sleeve 7 and the connecting column 8 is released, the third spring 36 in the compressed state in the first fixed tube 4 will be immediately reset, so that the movable block 31 can be pushed to the bottom of the second fixed tube 5. With the movement of the movable block 31, the locking ball 35 in the receiving groove 37 can be pushed out from the through hole 6, thereby expanding the width of the entire second fixed tube 5, and then it can play a role in blocking the process of the entire screw rod 1 rising and falling due to vibration, thereby ensuring the locking effect of the entire screw rod 1;

[0050] Then the staff pulls out the hexagonal handle 38 located inside the matching groove 3. At this time, the pressure on the top of the sleeve 7 is instantly released, so the second spring 28 fixedly connected to the bottom outer wall of the second partition 26 in a stretched state will immediately restore its deformation, thereby being able to pull the entire first fixed tube 4 upward. In the process of pulling the first fixed tube 4 upward, the locking ball 35 will also move up with the second fixed tube 5 until the locking ball 35 is pressed against the bottom outer wall of the workpiece below, thereby avoiding any loose gap between the locking ball 35 and the bottom outer wall of the workpiece below, further improving the locking ability of the bolt.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking bolt, comprising a screw rod (1), characterized in that: The top outer wall of the screw rod (1) is provided with a nut (2), the top outer wall of the nut (2) is provided with a matching groove (3), and the cross section of the matching groove (3) is a regular hexagon; The bottom end of the screw rod (1) is provided with a locking assembly and a lifting assembly; A positioning assembly for fixing the locking assembly is arranged inside the matching groove (3); A clamping assembly for fixing the lifting assembly is provided at the bottom of the matching groove (3); The locking assembly comprises a first fixed tube (4) arranged at the bottom of the screw rod (1); the bottom end of the first fixed tube (4) is fixedly connected to a second fixed tube (5); the inner diameter of the second fixed tube (5) is larger than that of the first fixed tube (4); a third partition plate (30) is fixedly connected to the circumferential inner wall of the first fixed tube (4); a third spring (36) is fixedly connected to the bottom inner wall of the third partition plate (30); an end of the third spring (36) away from the third partition plate (30) is fixedly connected to a movable block (31); and the movable block (31) is located inside the second fixed tube (5); The movable block (31) comprises a first truncated cone portion (32), a second cylindrical portion (33) and a second truncated cone portion (34); the second cylindrical portion (33) is located in the middle of the first truncated cone portion (32) and the second truncated cone portion (34); the circumferential outer walls of the first truncated cone portion (32), the second cylindrical portion (33) and the second truncated cone portion (34) form an annular groove; a locking ball (35) is arranged inside the annular groove; a through hole (6) is formed on the circumferential outer wall of the second fixed tube (5); the locking ball (35) cooperates with the through hole (6); a connecting column (8) is fixedly connected to the top outer wall of the movable block (31); an end of the connecting column (8) away from the movable block (31) passes through the middle of the third partition plate (30); The lifting assembly comprises a spring seat (29) fixedly connected to the top outer wall of the first fixed tube (4), a second spring (28) being fixedly connected inside the spring seat (29), a cavity (17) being provided inside the screw rod (1), the cavity (17) being communicated with the matching groove (3), a second partition plate (26) being fixedly connected to the circumferential inner wall of the cavity (17), and an end of the second spring (28) away from the spring seat (29) being fixedly connected to the bottom outer wall of the second partition plate (26); A sleeve (7) is fixedly connected to the top outer wall of the third partition plate (30); The positioning assembly comprises a second circular groove (22) provided inside the nut (2), a rotating rod (16) being rotatably connected inside the second circular groove (22), the rotating rod (16) comprising a first cylindrical portion (13) and a threaded portion (12), a threaded groove (20) being provided on a circumferential outer wall of the connecting column (8), the threaded portion (12) being threadedly connected to the threaded groove (20), a first circular groove (21) being provided on a circumferential outer wall of the sleeve (7), one end of the first cylindrical portion (13) passing through the inside of the first circular groove (21), a movable groove (23) being provided inside the nut (2), the movable groove (23) being connected to the matching groove (3), the rotating rod (16) being located inside the movable groove (23), a sliding groove (15) being provided on one side outer wall of the nut (2), the sliding groove (15) being connected to the movable groove (23).

2. A locking bolt according to claim 1, characterized in that: The circumferential inner wall of the second fixing tube (5) is provided with a receiving groove (37), the circumferential outer wall of the locking ball (35) is in contact with the circumferential inner wall of the receiving groove (37), and the receiving groove (37) is connected to the through hole (6).

3. A locking bolt according to claim 2, characterized in that: One end of the first fixing tube (4) away from the second fixing tube (5) is located inside the cavity (17), and one end of the first fixing tube (4) is slidably connected to the cavity (17).

4. A locking bolt according to claim 2, characterized in that: One end of the connecting column (8) passes through the inside of the sleeve (7), the center of the sleeve (7) is the same as the center of the connecting column (8), a second circular hole (27) is opened in the middle of the second partition plate (26), and one end of the sleeve (7) passes through the inside of the second circular hole (27).

5. A locking bolt according to claim 4, characterized in that: A first partition plate (24) is fixedly connected to the circumferential inner wall of the cavity (17), a first circular hole (25) is opened in the middle of the first partition plate (24), and one end of the sleeve (7) is inserted into the first circular hole (25).

6. A locking bolt according to claim 5, characterized in that: The clamping assembly comprises a rotating groove (9) formed on the inner wall at the bottom of the matching groove (3); the inner walls on both sides of the rotating groove (9) are rotatably connected to a rotating shaft; one end of the rotating shaft is fixedly connected to a rotating roller (10); the circumferential outer wall of the rotating roller (10) is fixedly connected to a locking plate (11); the circumferential outer wall of the sleeve (7) is provided with a locking groove (19); one end of the locking plate (11) is located inside the locking groove (19).

7. A locking bolt according to claim 6, characterized in that: A first spring (18) is fixedly connected to the circumferential inner wall of the cavity (17); one end of the first spring (18) away from the circumferential inner wall of the cavity (17) is fixedly connected to an outer wall of one side of the locking plate (11).

8. A locking bolt according to claim 7, characterized in that: One end of the rotating rod (16) extending to the outside of the nut (2) is fixedly connected to a rotating block (14), and the circumferential outer wall of the rotating block (14) is provided with anti-slip grooves distributed in a circular shape at equal distances.

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