Bolt suite not easy to loosen

Abstract

The utility model discloses a bolt suite not prone to loosening, and belongs to the technical field of fasteners. One end of the bolt column is fixedly connected with the welding end plate, the outer wall of the bolt column is provided with a convex thread extending in the axial direction, the convex thread is in threaded connection with the hexagonal nut, the surface of the bolt column is provided with a guide opening and an aligned insertion hole along the convex thread, one side of the hexagonal nut is provided with an auxiliary hole, and an opening bolt is inserted between the insertion hole and the auxiliary hole; the bolt column is provided with a convex thread, one end of the hexagonal nut is fixedly connected with a protective sleeve, the protective sleeve is arranged at the end, provided with the convex thread, of the bolt column in a sleeving mode, a limiting mechanism is arranged between the bolt column and the protective sleeve, and the limiting mechanism comprises a positioning rod and a check block. When the hexagonal nut is subjected to periodic vibration or impact, the hexagonal nut is not prone to rotating and loosening, and the overall fastening use is not affected.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a bolt kit that is not easily loosened. Background Technology

[0002] Bolts and nuts are the most commonly used fasteners in mechanical connections, widely used in construction, machinery manufacturing, transportation, and many other fields. In actual use, due to factors such as mechanical vibration, changes in ambient temperature, repeated loads, or human operation, traditional bolt and nut connection structures lack additional anti-loosening mechanisms. When subjected to periodic vibration or impact, the nut is prone to rotation and loosening, affecting the overall fastening performance.

[0003] Based on this, this utility model designs a bolt kit that is not easy to loosen in order to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a bolt kit that is not easy to loosen, so as to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bolt assembly that is not easy to loosen, comprising: a bolt post; one end of the bolt post is fixedly connected to a welding end plate, the outer wall of the bolt post is provided with a convex thread extending along the axial direction, and the convex thread is threadedly connected to a hexagonal nut, the surface of the bolt post is provided with a guide opening and a corresponding insertion hole along the convex thread, an auxiliary hole is provided on one side of the hexagonal nut, and an open pin is inserted between the insertion hole and the auxiliary hole;

[0006] A protective sleeve is fixedly connected to one end of the hexagonal nut, and the protective sleeve is fitted onto the end of the bolt with a protruding thread. A limit mechanism is provided between the bolt and the protective sleeve, and the limit mechanism includes a positioning rod and a stop block.

[0007] Preferably, the positioning rod is fixedly connected to the end of the bolt with a protruding thread, and the stop block is fixedly connected to the bottom end of the protective sleeve.

[0008] Preferably, one end of the stop block abuts against the positioning rod.

[0009] Preferably, the protective sleeve has an elongated observation opening on its surface, and the observation opening is positioned along the guide opening.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] Firstly, the open pin, with the cooperation of the auxiliary hole and the insertion hole, can pass through the hexagonal nut and the bolt, forming an axial mechanical limit. When subjected to periodic vibration or impact, the hexagonal nut is not easy to rotate and loosen, thus affecting the overall fastening and use.

[0012] Secondly, when the stop block of the protective sleeve is pressed against the positioning rod of the bolt, the hexagonal nut is in place and cannot be rotated further. At the same time, the observation port of the protective sleeve will also be aligned with the guide port of the bolt. With double auxiliary positioning, it is convenient for personnel to quickly determine the alignment of the auxiliary hole and the insertion hole and insert the open pin. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0015] Figure 2 This is a schematic diagram highlighting the bottom structure of the hexagonal nut in this embodiment;

[0016] Figure 3 This is a schematic diagram illustrating the structure of the bolt after disassembly in this embodiment;

[0017] Figure 4 This is a schematic diagram highlighting the internal structure of the protective sleeve in this embodiment.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Bolt; 2. Welded end plate; 3. Raised thread; 4. Hex nut; 5. Guide port; 6. Insertion hole; 7. Auxiliary hole; 8. Open pin; 9. Protective sleeve; 10. Positioning rod; 11. Stop block; 12. Observation port. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a bolt kit that is not easy to loosen, including: a bolt post 1; one end of the bolt post 1 is fixedly connected to the welding end plate 2, the outer wall of the bolt post 1 is provided with a convex thread 3 extending along the axial direction, and the convex thread 3 is threadedly connected to the hexagonal nut 4, the surface of the bolt post 1 is provided with a guide port 5 and a corresponding insertion hole 6 along the convex thread 3, the hexagonal nut 4 is provided with an auxiliary hole 7 on one side, and an open pin 8 is inserted between the insertion hole 6 and the auxiliary hole 7;

[0022] A protective sleeve 9 is fixedly connected to one end of a hexagonal nut 4, and the protective sleeve 9 is sleeved on the end of the bolt 1 with a protruding thread 3. A limit mechanism is provided between the bolt 1 and the protective sleeve 9. The limit mechanism includes a positioning rod 10 and a stop block 11.

[0023] One end of the bolt 1 is fixedly installed by the welded end plate 2, while the hexagonal nut 4 is tightened along the protruding thread 3 of the bolt 1. When the nut is tightened, the open pin 8 is inserted through the insertion hole 6 on the bolt 1 and the auxiliary hole 7 on the nut to complete the lateral locking, preventing loosening due to vibration or rotation. The protective sleeve 9 and the hexagonal nut 4 rotate synchronously. After the hexagonal nut 4 is locked in place, the protective sleeve 9 will be fitted into the protruding thread 3 end of the bolt 1, which will play a role in preventing impact and knocking on the protruding thread 3. The protective sleeve 9 and the bolt 1 are connected by the positioning rod 10 and the stop block 11 to form a three-dimensional limiting structure.

[0024] More preferably, the positioning rod 10 is fixedly connected to one end of the bolt 1 with the protruding thread 3, and the stop block 11 is fixedly connected to the bottom end of the protective sleeve 9;

[0025] A positioning rod 10 is provided at the end of the threaded end 3 of the bolt 1, and a stop block 11 is fixedly provided at the bottom of the inner end of the protective sleeve 9. The stop block 11 rotates with the protective sleeve 9. After the protective sleeve 9 is installed, the positioning rod 10 contacts the stop block 11 to form an axial limit and assist personnel in positioning.

[0026] In a further preferred embodiment, one end of the stop block 11 abuts against the positioning rod 10;

[0027] After the hexagonal nut 4 is installed, the stop block 11 directly abuts against the end face of the positioning rod 10, forming a forced contact limit and auxiliary positioning relationship.

[0028] In a further preferred embodiment, the protective sleeve 9 has an elongated observation opening 12 on its surface, and the observation opening 12 is positioned along the guide opening 5;

[0029] On the outer wall of the protective sleeve 9, there is a long strip-shaped observation port 12 along the direction of the guide port 5. After the hexagonal nut 4 is completed, check whether it is aligned with the guide port 5 through the observation port 12 to assist in positioning.

[0030] A specific application of this embodiment is as follows: the welding end plate 2 of the bolt 1 is welded and installed to the target component, the object to be fixed is inserted into the bolt 1, and a hexagonal nut 4 is threaded onto one end of the protruding thread 3 of the bolt 1 to lock the object. When the bolt is turned to lock the hexagonal nut 4, the protective sleeve 9 will be fitted onto one end of the protruding thread 3 of the bolt 1 to protect it. When the hexagonal nut 4 is rotated into place, the auxiliary hole 7 will be aligned with the insertion hole 6. The stop 11 of the protective sleeve 9 is pressed against the positioning rod 10 of the bolt 1, making it difficult for the hexagonal nut 4 to rotate excessively after it is in place. At the same time, the observation port 12 of the protective sleeve 9 will also be aligned with the guide port 5 of the bolt 1. With double auxiliary positioning, it is convenient for personnel to quickly determine the alignment of the auxiliary hole 7 and the insertion hole 6 to insert the open pin 8. After insertion, the open end of the open pin 8 can be bent to limit its position.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bolt kit that is not easily loosened, characterized in that, include: A stud (1); one end of the stud (1) is fixedly connected to the welding end plate (2). The outer wall of the stud (1) is provided with a convex thread (3) extending along the axial direction, and the convex thread (3) is threadedly connected to a hexagonal nut (4). The surface of the stud (1) is provided with a guide port (5) and a corresponding insertion hole (6) along the convex thread (3). An auxiliary hole (7) is provided on one side of the hexagonal nut (4). An open pin (8) is inserted between the insertion hole (6) and the auxiliary hole (7). The hexagonal nut (4) is fixedly connected to a protective sleeve (9) at one end, and the protective sleeve (9) is sleeved on the end of the bolt (1) with a protruding thread (3). A limit mechanism is provided between the bolt (1) and the protective sleeve (9). The limit mechanism includes a positioning rod (10) and a stop block (11).

2. A non-backout bolt kit as defined in claim 1, wherein: The positioning rod (10) is fixedly connected to one end of the bolt (1) with a protruding thread (3), and the stop block (11) is fixedly connected to the bottom end of the protective sleeve (9).

3. A non-backout bolt kit as defined in claim 2, wherein: One end of the stop (11) abuts against the positioning rod (10).

4. A non-backout bolt kit as defined in claim 1, wherein: The protective sleeve (9) has a long strip-shaped observation port (12) on its surface, and the observation port (12) is set along the guide port (5).

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