High-temperature-resistant self-locking nut

Abstract

The utility model belongs to the technical field of self-locking nuts, and particularly relates to a high-temperature-resistant self-locking nut which comprises a bolt, and a hexagonal nut is arranged on the bolt. The bolt comprises a screw rod and clamping grooves, and the vertical linear clamping grooves are formed in spiral teeth on the screw rod in an annular array mode. By arranging a connecting structure of the clamping blocks, the springs and the clamping grooves, the springs push the clamping blocks to move outwards in the sliding grooves, the clamping blocks are embedded into the clamping grooves for directional fixing, reverse rotation of the nut blocks is avoided, the self-locking effect is achieved, all the components are made of metal, and the high-temperature-resistant effect of the nut is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of self-locking nuts, and specifically relates to a high-temperature resistant self-locking nut. Background Art

[0002] Nuts are very common fastening parts in the mechanical industry and can play a certain fastening role. However, when large machinery is working, very strong vibrations will occur, causing both the bolts and nuts to shake, resulting in an unsatisfactory fastening effect. In addition, a large amount of heat will be generated during the long-term operation of the machinery, causing the temperature to rise, which will also affect the fastening effect of the nuts and cannot meet the normal use requirements of users.

[0003] In the prior art, the publication number 202122307580.7 discloses a high-temperature resistant self-locking nut, which includes a bolt, a main nut, a sub-nut and two rubber sealing rings. One end of the bolt is fixedly provided with a pressing plate, and the outer surface of the bolt is provided with threads. Thread grooves are opened on both the main nut and the sub-nut, and self-locking threads are provided on the surface of the thread grooves. Both the main nut and the sub-nut are threadedly sleeved on the outer surface of the bolt, and the main nut is sleeved on the side close to the pressing plate. Beneficial effects: For the object to be fastened, first pass the bolt through the object until the pressing plate just abuts against the object. Then, install one of the rubber sealing rings, the main nut, the other rubber sealing ring and the sub-nut in sequence at the other end of the bolt. The rubber sealing rings provided can increase the contact area, reduce the pressure, prevent loosening and protect the object from damage. In addition, the self-locking threads provided on the main nut can effectively fasten the object.

[0004] In the above patent, the rubber sealing rings can increase the contact area, reduce the pressure, prevent loosening and protect the object from damage, and the self-locking threads provided on the main nut can effectively fasten the object. However, the sealing rings in this self-locking nut will melt and be damaged at high temperatures, resulting in the problem of unstable nut fixing structure.

[0005] Therefore, a high-temperature resistant self-locking nut is proposed to solve the above problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the problem that the sealing rings in some existing self-locking nuts will melt and be damaged at high temperatures, resulting in an unstable nut fixing structure, a high-temperature resistant self-locking nut is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is: A high-temperature resistant self-locking nut of the utility model includes a bolt, and a hexagonal nut is arranged on the bolt;

[0008] The bolt includes a screw rod and a card slot. Vertically linear card slots are arranged in a circular array on the spiral teeth of the screw rod.

[0009] Preferably, the hexagonal nut includes a nut block, a sliding slot, a clamping block and a spring. The nut block is threadedly connected to the screw rod. Two sliding slots are symmetrically arranged in the nut block. A clamping block and a spring are arranged in each of the two sliding slots. One end of the outer side of the clamping block is arranged in an inclined surface shape, and one end of the outer side of the clamping block is snap-fitted with the card slot. One end of the inner side of the clamping block is attached to one end of the spring, and the other end of the spring is attached to the nut block.

[0010] The beneficial effects of the present utility model:

[0011] The present utility model provides a high-temperature resistant self-locking nut. By setting the connection structure of the clamping block, the spring and the card slot, the spring pushes the clamping block to move outward in the sliding slot, so that the clamping block is embedded in the card slot for directional fixation, avoiding the reverse rotation of the nut block, achieving the effect of self-locking, and all components are made of metal materials, greatly improving its high-temperature resistant effect. Description of the Drawings

[0012] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0013] Figure 1 is the three-dimensional structure front view of the present utility model;

[0014] Figure 2 is the three-dimensional structure cross-sectional view of the present utility model.

[0015] Legend Explanation:

[0016] 1. Bolt; 101. Screw rod; 102. Card slot;

[0017] 2. Hexagonal nut; 201. Nut block; 202. Sliding slot; 203. Clamping block; 204. Spring. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all 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 work fall within the protection scope of the present utility model.

[0019] The following gives a specific embodiment.

[0020] Please refer toFigure 1 , the present utility model provides a high-temperature resistant self-locking nut, including a bolt 1, and a hexagonal nut 2 is arranged on the bolt 1;

[0021] The bolt 1 includes a screw rod 101 and a card slot 102. Vertically linear card slots 102 are annularly and arrayedly arranged on the spiral teeth of the screw rod 101.

[0022] During operation, the screw rod 101 serves as the main body to combine and connect various components.

[0023] Furthermore, as shown in Figures 1 - 2 , the hexagonal nut 2 includes a nut block 201, a sliding slot 202, a clamping block 203, and a spring 204. The nut block 201 is threadedly connected to the screw rod 101. Two sliding slots 202 are symmetrically arranged inside the nut block 201. A clamping block 203 and a spring 204 are arranged in each of the two sliding slots 202. One end of the outer side of the clamping block 203 is arranged in an inclined surface shape, and one end of the outer side of the clamping block 203 is snap-fitted with the card slot 102. One end of the inner side of the clamping block 203 is attached to one end of the spring 204, and the other end of the spring 204 is attached to the nut block 201.

[0024] During operation, the spring 204 pushes the clamping block 203 to move outward in the sliding slot 202, so that the clamping block 203 is embedded in the card slot 102 to perform one-way fixation on the nut block 201.

[0025] Working principle: When using this self-locking nut, first sleeved the nut block 201 on the screw rod 101 and rotate it. When the threaded block 201 rotates towards the inclined surface side of the clamping block 203, part of the acting force between the screw rod 101 and the clamping block 203 is converted into the acting force that pushes the clamping block 203 to move inward in the sliding slot 202, so that the clamping block 203 leaves the card slot 102, and then the nut block 201 can be normally rotated and tightened. When the nut block 201 rotates to a suitable position, the spring 204 pushes the clamping block 203 to move outward in the sliding slot 202, so that the clamping block 203 is embedded in the card slot 102 to perform one-way fixation on the nut block 201, avoiding the reverse rotation of the nut block 201 and causing the nut block 201 to loosen.

[0026] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A high-temperature resistant self-locking nut, comprising a bolt (1), characterized in that: A hexagonal nut (2) is provided on the bolt (1); The bolt (1) includes a screw rod (101) and a card slot (102), and vertically linear card slots (102) are annularly arranged on the spiral teeth of the screw rod (101); The hexagonal nut (2) includes a nut block (201), a chute (202), a clamping block (203) and a spring (204). The nut block (201) is threadedly connected to the screw rod (101). Two chutes (202) are symmetrically arranged in the nut block (201). A clamping block (203) and a spring (204) are arranged in each of the two chutes (202). One end of the outer side of the clamping block (203) is arranged in an inclined surface shape, and one end of the outer side of the clamping block (203) is snap-fitted with the card slot (102). One end of the inner side of the clamping block (203) is in contact with one end of the spring (204), and the other end of the spring (204) is in contact with the nut block (201).

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