Anti-loosening buckle

Abstract

The utility model relates to the technical field of shackles, and aims to provide an anti-loosening shackle which comprises a U-shaped shackle body and a locking bolt, ring holes are arranged on two sides of an opening end of the U-shaped shackle body, a thread locking component is arranged on the tail portion of the locking bolt, the locking bolt penetrates through the ring holes on two sides, and the locking bolt is connected with the U-shaped shackle body. The U-shaped buckle body is detachably connected with the locking bolt through a thread locking assembly; the thread locking assembly comprises a nut A, a nut B, a thread section A and a thread section B, the thread section A and the thread section B are arranged at the tail of the locking bolt, the thread section B is close to one side of the tail end of the locking bolt, and the thread turning directions of the thread section A and the thread section B are opposite; the nut A and the nut B are correspondingly screwed on the threaded section A and the threaded section B respectively, and the inner diameter of the nut A is larger than that of the nut B; the outer sides of the nut A and the nut B are further covered with a sleeve assembly. The anti-loosening device is simple in structure, rapid to install and capable of effectively preventing the shackle and the locking bolt from loosening.

Description

Technical Field

[0001] This utility model relates to the field of shackle technology, specifically to an anti-loosening shackle. Background Technology

[0002] During offshore wind power piling operations, the shackle, as a connecting tool to the pile driver, experiences irregular and intense collisions with the pile driver under the repeated impacts of the hydraulic pile hammer. This can cause the bolt pin on the shackle to loosen and rotate, leading to separation and detachment, posing a significant safety hazard. Traditional anti-loosening measures simply involve screwing double nuts onto the locking end of the bolt pin. While this can prevent loosening to some extent, it still carries the risk of failure under extreme conditions. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-loosening shackle, which has a simple structure, is quick to install, and can effectively prevent the shackle from loosening from the locking bolt.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A locking buckle includes a U-shaped buckle body and a locking bolt. The U-shaped buckle body has ring eyes on both sides of its open end. The locking bolt has a threaded locking assembly at its tail. The locking bolt passes through the ring eyes on both sides, and the U-shaped buckle body and the locking bolt are connected and disconnected through the threaded locking assembly.

[0006] The threaded locking assembly includes a nut A, a nut B, a threaded segment A, and a threaded segment B. Threaded segments A and B are sequentially disposed at the tail of the locking bolt. Threaded segment B is located closer to the tail of the locking bolt, and the threads of threaded segments A and B have opposite directions of rotation. Nut A and nut B are respectively screwed onto threaded segments A and B, and the inner diameter of nut A is larger than the inner diameter of nut B.

[0007] The outer sides of nuts A and B are also covered with sleeve assemblies to prevent nuts A and B from loosening.

[0008] Compared with the prior art, the advantages of this utility model are:

[0009] 1. By using threaded sections A and B with reversed thread configuration, the locking bolt is subjected to impact loads, and the interaction between nuts A and B forms a self-locking mechanism, avoiding the problem of loosening of traditional one-way threads under vibration, thus improving the locking reliability of the shackle.

[0010] 2. Through the cooperation of studs, double nuts, screw A and screw hole B, the protective sleeve is placed on the outside of nuts A and B, and is fixed in the axial and circumferential directions, thereby effectively preventing nuts A and B from loosening and avoiding the U-shaped buckle from coming loose from the locking bolt.

[0011] 3. By setting through holes A and B, and adding anti-loosening wire, the connection between screw A and screw B is improved, further enhancing the anti-loosening performance of the shackle. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the anti-loosening shackle of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the threaded locking assembly of this utility model;

[0014] Figure 3 yes Figure 2 A partial structural diagram;

[0015] Figure 4 yes Figure 1 The left view;

[0016] Figure 5 yes Figure 1 The right view.

[0017] Labeling Explanation: 1. U-shaped buckle body, 2. Locking bolt, 3. Ring eye, 4. Threaded locking assembly, 41. Nut A, 42. Nut B, 43. Threaded section A, 44. Threaded section B, 5. Sleeve assembly, 51. Protective sleeve, 52. Stud, 53. Double nut, 54. Screw A, 540. Through hole A, 55. Screw B, 550. Through hole B, 56. Elastic washer, 6. Stop weld. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0019] like Figure 1-5 The diagram shown is a schematic representation of an embodiment of the anti-loosening shackle provided by this utility model:

[0020] A locking buckle includes a U-shaped buckle body 1 and a locking bolt 2. The U-shaped buckle body 1 has ring eyes 3 on both sides of its open end. The locking bolt 2 has a threaded locking assembly 4 at its tail. The locking bolt 2 passes through the ring eyes 3 on both sides, and the U-shaped buckle body 1 and the locking bolt 2 are connected and disconnected through the threaded locking assembly 4.

[0021] The threaded locking assembly 4 includes a nut A41, a nut B42, a threaded section A43, and a threaded section B44. Threaded sections A43 and B44 are sequentially disposed at the tail of the locking bolt 2. Threaded section B44 is located closer to the tail of the locking bolt 2, and the threads of threaded sections A43 and B44 have opposite directions of rotation. Nuts A41 and B42 are respectively screwed onto threaded sections A43 and B44, and the inner diameter of nut A41 is larger than the inner diameter of nut B42.

[0022] The outer sides of nuts A41 and B42 are also covered with sleeve assembly 5 to prevent nuts A41 and B42 from loosening.

[0023] The sleeve assembly 5 includes a protective sleeve 51 and a stud 52. The protective sleeve 51 covers the outside of the nuts A41 and B42. The tail end of the locking bolt 2 and the outer wall of the protective sleeve 51 are respectively provided with mounting holes for mounting the stud 52. The stud 52 is screwed into the mounting hole, and the head of the stud 52 is also screwed with a double nut 53 for axially fixing the protective sleeve 51.

[0024] Preferably, the protective sleeve 51 is an internal hexagonal outer circle protective sleeve.

[0025] In some embodiments, a plurality of screw holes A are correspondingly provided on the outer side wall of the protective sleeve 51 and the outer side wall of the nut A41. The plurality of screw holes A are arranged circumferentially, and each screw hole A is screwed with a screw A54 for circumferentially fixing the protective sleeve 51.

[0026] In some embodiments, a plurality of screw holes B are provided on the outer side wall of the protective sleeve 51 and the outer side wall of the nut B42, and the plurality of screw holes B are arranged circumferentially, and each screw hole B is screwed with a screw B55 for circumferentially fixing the protective sleeve 51.

[0027] In this embodiment, a plurality of screw holes A are provided on the outer side wall of the protective sleeve 51 and the outer side wall of the nut A41. The plurality of screw holes A are arranged circumferentially, and each screw hole A is screwed with a screw A54 for circumferentially fixing the protective sleeve 51.

[0028] The outer wall of the protective sleeve 51 and the outer wall of the nut B42 are also provided with a number of screw holes B. The screw holes B are arranged circumferentially and correspond one-to-one with the screw holes A. Each screw hole B is screwed with a screw B55 for circumferentially fixing the protective sleeve 51.

[0029] Preferably, screws A54 and B55 are positive thread internal hexagon screws.

[0030] Both screws A54 and B55 have elastic washers 56 between their heads and the outer wall of the protective sleeve 51.

[0031] Furthermore, the elastic gasket 56 can be selected as a rubber gasket, a spring gasket, etc.

[0032] An anti-loosening wire is wound between the head of screw A54 and the head of the corresponding screw B55.

[0033] The head of screw A54 has a through hole A540, and the head of screw B55 has a through hole B550. The anti-loosening wire is inserted between the through hole A540 and the through hole B550.

[0034] Specifically, the anti-loosening wire first passes through the insertion hole A540 and the insertion hole B550, and then is wrapped in a figure-eight shape and connected to the screw A54 and the corresponding screw B55.

[0035] The nut end of the locking bolt 2 is fitted with the outer wall of the U-shaped buckle 1 for limiting, and a stop weld 6 is welded between the nut end of the locking bolt 2 and the U-shaped buckle 1.

[0036] Specifically, the stop weld 6 is welded between the top side of the nut end of the locking bolt 2 and the outer wall of the U-shaped buckle 1.

[0037] The installation method of this utility model is roughly as follows:

[0038] Pass the locking bolt 2 through the two ring holes 3 on both sides of the U-shaped buckle 1, and screw the nut A41 onto the threaded section A43 of the locking bolt 2, tightening it to the appropriate torque. Then, screw the nut B42 onto the threaded section B44, tightening it to the appropriate torque as well. Use a special tool (such as a torque wrench) to check the tightness of nuts A41 and B42 to ensure there is no looseness. Then, put the protective sleeve 51 on the outside of nuts A41 and B42, and install the elastic washer 56, screw A54, screw B55, stud 52, and double nuts 53 accordingly to enhance the connection stability of the protective sleeve 51. Next, pass the anti-loosening wire through the insertion holes A540 and B550 in sequence, and then wrap it in a figure-eight shape around screw A54 and the corresponding screw B55 to further enhance the anti-loosening effect. Finally, weld the locking weld 6 between the top side of the nut end of the locking bolt 2 and the outer wall of the U-shaped buckle 1, thus completing the installation of this utility model.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A kind of anti-loosening shackle, comprising U-shaped buckle body (1) and locking bolt (2), both sides of the open end of the U-shaped buckle body (1) are provided with ring eye (3), the tail of locking bolt (2) is provided with threaded locking assembly (4), the locking bolt (2) is threaded through both sides ring eye (3), and the U-shaped buckle body (1) is connected with locking bolt (2) by threaded locking assembly (4) and is disassembled, it is characterized by: The threaded locking assembly (4) includes nut A (41), nut B (42), threaded section A (43) and threaded section B (44), threaded section A (43) and threaded section B (44) are sequentially arranged in the tail of locking bolt (2), wherein the threaded section B (44) is close to the tail end of locking bolt (2) side, and the thread rotation direction between threaded section A (43) and threaded section B (44) is opposite;Nut A (41) and nut B (42) are respectively screwed on threaded section A (43) and threaded section B (44), and the inner diameter of nut A (41) is greater than the inner diameter of nut B (42); The outer side of nut A (41) and nut B (42) is further covered with sleeve assembly (5) for preventing nut A (41) and nut B (42) from loosening.

2. The shackle of claim 1, wherein: The sleeve assembly (5) includes protective sleeve (51) and stud (52), the protective sleeve (51) is covered on the outer side of nut A (41) and nut B (42), the tail end of locking bolt (2) and the outer side wall of protective sleeve (51) are correspondingly provided with mounting hole for mounting stud (52), the stud (52) is screwed in the mounting hole, and the head of the stud (52) is further screwed with double nut (53) for axially fixing the protective sleeve (51).

3. The shackle of claim 2, wherein: A plurality of screw holes A are correspondingly provided on the outer side wall of the protective sleeve (51) and the outer side wall of nut A (41), the plurality of screw holes A are circumferentially spaced, and a screw A (54) for circumferentially fixing the protective sleeve (51) is screwed in each screw hole A.

4. The shackle of claim 2, wherein: A plurality of screw holes B are correspondingly provided on the outer side wall of the protective sleeve (51) and the outer side wall of nut B (42), the plurality of screw holes B are circumferentially spaced, and a screw B (55) for circumferentially fixing the protective sleeve (51) is screwed in each screw hole B.

5. The shackle of claim 2, wherein: A plurality of screw holes A are correspondingly provided on the outer side wall of the protective sleeve (51) and the outer side wall of nut A (41), the plurality of screw holes A are circumferentially spaced, and a screw A (54) for circumferentially fixing the protective sleeve (51) is screwed in each screw hole A. A plurality of screw holes B are correspondingly provided on the outer side wall of the protective sleeve (51) and the outer side wall of nut B (42), the plurality of screw holes B are circumferentially spaced, and correspond to the screw holes A, a screw B (55) for circumferentially fixing the protective sleeve (51) is screwed in each screw hole B.

6. The shackle of claim 5, wherein: The head of the screw A (54) and the screw B (55) and the outer side wall of the protective sleeve (51) are both provided with elastic gasket (56).

7. The shackle of claim 5, wherein: The head of the screw A (54) and the head of the corresponding screw B (55) are wound with a lock wire.

8. The shackle of claim 7, wherein: The head of the screw A (54) is provided with a penetration hole A (540) and the head of the screw B (55) is provided with a penetration hole B (550), and the locking wire is arranged between the penetration hole A (540) and the penetration hole B (550).

9. The shackle as claimed in any one of claims 1 to 8, characterized in that: The nut end of the locking bolt (2) is limitedly matched with the outer side wall of the U-shaped buckle body (1), and a stop weld (6) is welded between the nut end of the locking bolt (2) and the U-shaped buckle body (1).

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