Twist-off type anti-loosening and anti-dismounting nut with anti-theft function

Abstract

The utility model relates to the technical field of nut devices, in particular to a twist-off type anti-loosening and anti-dismounting nut with an anti-theft function, which comprises an object to be fixed, a groove body is arranged in the middle of the object to be fixed, a screw rod is arranged in the groove body, a bolt head is fixed at the top end of the screw rod, a tool withdrawal groove is arranged on the outer side of the screw rod, and a nut is sleeved in the middle of the screw rod. The bottom end of the nut is sleeved with a hexagonal head, the nut and a bolt are screwed in a matched mode, after a certain torque is achieved, the hexagonal head is separated and disengaged, only the circular-truncated-cone-shaped body is left, the novel twist-off type anti-loosening and anti-disassembling nut well solves the problems, and loosening and disassembling can be guaranteed; therefore, the nut can be widely applied to an electric iron tower and a communication tower, after the nut is tightened by a wrench or a socket wrench to a certain torque, the hexagonal head falls off and is separated from the main body, and the conical circular truncated cone nut is left, and at the moment, the nut cannot be loosened by the wrench, so that the anti-loosening and anti-dismounting effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of nut devices, and particularly relates to a twist-off type anti-loosening and anti-removing nut with an anti-theft function. Background Art

[0002] There are many types of existing anti-loosening and anti-removing nuts, and their structures are very different. However, they all have inherent defects and unpredictable risks brought by their own structures. For example, for traditional hexagonal ball-type anti-theft nuts, two grooves need to be processed inside the hexagonal nut to accommodate steel balls to play a role in anti-backoff and anti-loosening. However, due to processing error factors, if the diameters of the two steel balls are too large, they are easily stuck, damaging the bolt threads; if the steel balls are too small, they cannot prevent theft. At the same time, because the nut threads are discontinuous, the anti-theft nut cannot reach the guaranteed load of nuts of the same grade. Content of the Utility Model

[0003] Technical Problems to be Solved

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a twist-off type anti-loosening and anti-removing nut with an anti-theft function. By setting a screw rod structure with a relief groove, after the screw rod is fixed in a fixed object, the nut body is composed of a regular hexagon at the head and a frustum of a cone with a certain taper at the lower part. The inside of the frustum of the cone is threaded, and the small end of the frustum of the cone is a break-off section (dangerous section); use a conventional wrench (socket) to wrench the hexagon to tighten the nut and the bolt. After reaching a certain torque, the hexagon part breaks off and only the frustum-shaped body remains. This new type of twist-off type anti-loosening and anti-removing nut solves these problems well. It can not only ensure anti-loosening and anti-removing, but also reach the guaranteed load of nuts of the same level. Therefore, it can be widely used in power transmission towers and communication poles. Tighten it with a wrench or a socket wrench. After reaching a certain torque, the hexagon head breaks off and separates from the main body, leaving a frustum nut with a taper. At this time, the nut cannot be loosened with a wrench, thus achieving the anti-loosening and anti-removing effect, and can effectively solve the processing error factors in the prior art. In the prior art, if the diameter of the steel ball is too large, it is easily stuck, damaging the bolt threads; if the steel ball is too small, it cannot prevent theft. At the same time, because the nut threads are discontinuous, the anti-theft nut cannot reach the guaranteed load of nuts of the same level.

[0005] Technical Solutions

[0006] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0007] The utility model provides a twist-off type anti-loosening and anti-removing nut with an anti-theft function, including an object to be fixed. A groove is provided in the middle of the object to be fixed, and a screw rod is arranged in the groove. A bolt head is fixed at the top of the screw rod. A relief groove is provided on the outer side of the screw rod. A nut is sleeved in the middle of the screw rod, and a hexagon head is sleeved at the bottom of the nut.

[0008] Further, the nut is a hollow horn shape with a larger upper part and a smaller lower part.

[0009] Further, threaded structures that mesh with each other are provided on the outer side wall of the screw rod and the inner side wall of the nut.

[0010] Further, the size of the hexagonal head is larger than the outer diameter size of the bottom end of the nut.

[0011] Further, the bottom end of the relief groove is in the same plane as the bottom end of the object to be fixed.

[0012] Further, an inner hexagonal groove is provided by opening downward from the top end of the bolt head.

[0013] Beneficial Effects

[0014] The technical solution provided by the present utility model has the following beneficial effects compared with the known public technology:

[0015] By providing a screw rod structure with a relief groove, after the screw rod is fixed in the object to be fixed, the nut body is composed of a regular hexagon at the head and a frustum of a cone with a certain taper at the lower part. The inside of the frustum of the cone is threaded, and the small end of the frustum of the cone is the breaking cross-section (dangerous cross-section); use a conventional wrench (socket) to turn the hexagon, so that the nut and the bolt are tightened in cooperation. After reaching a certain torque, the hexagon part breaks off and only the frustum-shaped body remains. This new type of break-off type anti-loosening and anti-removal nut solves these problems well. It can not only ensure anti-loosening and anti-removal, but also achieve the guaranteed load of nuts of the same level. Therefore, it can be widely used in power transmission towers and communication towers. Tighten with a wrench or socket wrench. After reaching a certain torque, the hexagonal head breaks off and separates from the main body, leaving a frustum-shaped nut with a taper. At this time, the nut cannot be loosened with a wrench, thus achieving the anti-loosening and anti-removal effect. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a structural schematic diagram of the present utility model;

[0018] Figure 2 It is a structural exploded view of the present utility model;

[0019] Figure 3 It is a structural sectional view of the present utility model;

[0020] Figure 4This is the structural breakdown diagram of the present utility model.

[0021] The reference numerals in the figure respectively represent: 1. Object to be fixed; 2. Bolt head; 21. Relief groove; 3. Screw rod; 4. Nut; 5. Hexagon head. Detailed implementation mode

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model will be further described below with reference to the embodiments.

[0024] Embodiment: A break-off type anti-loosening and anti-removing nut with anti-theft function, referring to the attached Figure 1 - attached Figure 4 , including an object 1 to be fixed, a groove is provided in the middle of the object 1 to be fixed, and a screw rod 3 is arranged in the groove. A bolt head 2 is fixed at the top end of the screw rod 3. A relief groove 21 is provided on the outer side of the screw rod 3. A nut 4 is sleeved in the middle of the screw rod 3. A hexagon head 5 is sleeved at the bottom end of the nut 4. After cold heading and forming, it is numerically controlled to process to the size, and the internal thread is tapped; it meets the fastener fitting tolerance and structural mechanics; no special wrench is required, which is convenient for operation;

[0025] The nut 4 is a hollow trumpet shape with a larger upper part and a smaller lower part. Thread structures that mesh with each other are provided on the outer side wall of the screw rod 3 and the inner side wall of the nut 4; the size of the hexagon head 5 is larger than the outer diameter size of the bottom end of the nut 4; the bottom end of the relief groove 21 is in the same plane as the bottom end of the object 1 to be fixed; an internal hexagon groove is provided downward at the top end of the bolt head 2; by setting the screw rod 3 structure with a relief groove 21, after the screw rod 3 is fixed in the object to be fixed, the main body of the nut 4 is composed of a regular hexagon at the head and a frustum with a certain taper at the lower part. The inside of the frustum is a thread, and the small end of the frustum is the break-off section (dangerous section); use a conventional wrench (socket) to wrench the hexagon to tighten the nut 4 and the bolt. After reaching a certain torque, the hexagon part breaks off and only the frustum-shaped main body remains. This new type of break-off type anti-loosening and anti-removing nut 4 well solves these problems, can not only ensure anti-loosening and anti-removing; but also achieve the proof load of the same level of nut 4. Therefore, it can be widely applied to electric power towers and communication poles. Tighten it with a wrench or a socket wrench. After reaching a certain torque, the hexagon head 5 breaks off and separates from the main body, leaving the frustum nut 4 with a taper. At this time, the nut 4 cannot be loosened with a wrench, thus achieving the anti-loosening and anti-removing effect.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A twist-off anti-loosening and anti-disassembly nut with anti-theft function, characterized in that: The invention comprises an object to be fixed (1), wherein a groove is provided in the middle of the object to be fixed (1), a screw rod (3) is arranged in the groove, a bolt head (2) is fixed to the top end of the screw rod (3), a backing groove (21) is provided on the outer side of the screw rod (3), a nut (4) is sleeved in the middle of the screw rod (3), and a hexagonal head (5) is sleeved on the bottom end of the nut (4).

2. The twist-off anti-loosening and anti-disassembly nut with anti-theft function according to claim 1, characterized in that: The nut (4) is in the shape of a hollow trumpet that is larger at the top and smaller at the bottom.

3. The twist-off anti-loosening and anti-disassembly nut with anti-theft function according to claim 1, characterized in that: The outer wall of the screw rod (3) and the inner wall of the nut (4) are both provided with meshing thread structures.

4. The twist-off anti-loosening and anti-disassembly nut with anti-theft function according to claim 1, characterized in that: The size of the hexagonal head (5) is larger than the outer diameter of the bottom end of the nut (4).

5. The twist-off anti-loosening and anti-disassembly nut with anti-theft function according to claim 4, characterized in that: The bottom end of the backing groove (21) and the bottom end of the object to be fixed (1) are located in the same plane.

6. The twist-off anti-loosening and anti-disassembly nut with anti-theft function according to claim 1, characterized in that: The top end of the bolt head (2) is provided with a hexagonal recess extending downward.

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