High-strength bolt

Abstract

The high-strength bolt comprises a screw head and a screw rod which are integrally formed, the screw rod is provided with external threads, the high-strength bolt further comprises an adjusting nut, a sliding disc, a pressing spring and a pressing gasket, the adjusting nut is matched with the screw rod in a threaded connection mode, and the two ends of the pressing spring are connected with the sliding disc and the pressing gasket. Guide grooves are formed in the two sides of the screw rod, guide protruding blocks in sliding fit with the guide grooves are arranged in the through holes of the sliding disc and the pressing gasket, and a plurality of friction increasing protruding strips are arranged on the surface of the pressing gasket. By arranging the adjusting nut, the sliding disc, the pressure applying spring and the pressure applying gasket, during fastening, the position of the pressure applying gasket can be adjusted through the adjusting nut, so that the pressure applying gasket is pressed on a fastened piece, use is more flexible, and the mounting requirements of different scenes can be met; and the pressing spring can enable the pressing gasket to be always under high-pressure elastic force, so that the pressing gasket is not easy to loosen, and a good anti-loosing effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a high-strength bolt. Background Art

[0002] A bolt is a type of fastener consisting of a head and a screw (a cylinder with external threads). It must be used in conjunction with a nut to fasten two parts with through holes.

[0003] When the existing high-strength bolts are used in conjunction with nuts, washers are provided to prevent loosening in order to improve the anti-loosening effect. However, the anti-loosening effect is poor if the washers are used alone, and the position of the washers cannot be adjusted. Utility Model Content

[0004] In view of the deficiencies in the background technology, the utility model provides a high-strength bolt.

[0005] The technical solution adopted by the utility model is: a high-strength bolt, including an integrally formed screw head and a screw rod, the screw rod is provided with an external thread, and also includes an adjusting nut, a sliding disk, a pressure spring and a pressure gasket, the adjusting nut is threadedly connected and matched with the screw rod, the two ends of the pressure spring are connected with the sliding disk and the pressure gasket, guide grooves are provided on both sides of the screw rod, guide protrusions that slide and match with the above-mentioned guide grooves are provided in the through holes of the sliding disk and the pressure gasket, and a plurality of friction-increasing convex strips are provided on the surface of the pressure gasket.

[0006] Furthermore, a steel ball hole is provided on the surface of the pressure gasket on one side of the adjusting nut, and a rolling steel ball is movably installed in the steel ball hole.

[0007] Furthermore, the friction-increasing convex strip consists of a large slope portion and a small slope portion.

[0008] Furthermore, the height of the friction-increasing convex strips is less than 2 mm.

[0009] Furthermore, a reinforcement layer is sprayed on the surface of the screw head and the screw rod, and a wear-resistant layer is sprayed on the surface of the reinforcement layer.

[0010] The beneficial effects of the utility model are as follows: by setting an adjusting nut, a sliding disk, a pressure spring and a pressure gasket, the adjusting nut can be used to adjust the position of the pressure gasket during tightening, so that the pressure gasket is pressed tightly against the fastener, which is more flexible to use and can adapt to installation requirements in different scenarios. In addition, the pressure spring can keep the pressure gasket under high-pressure elastic force at all times, making it difficult to loosen and having a good anti-loosening effect.

[0011] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0012] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 I Figure 1 Enlarged schematic diagram at point A in the middle.

[0015] Figure 3 It is a structural schematic diagram of the sliding disk.

[0016] Figure 1-3 In: 1. Screw head; 2. Screw rod; 3. Adjusting nut; 4. Sliding plate; 5. Pressure spring; 6. Pressure gasket; 7. Guide groove; 8. Guide convex block; 9. Friction-increasing convex strip; 10. Steel ball hole; 11. Rolling steel ball; 12. Large slope part; 13. Small slope part. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] The utility model provides a high-strength bolt.

[0020] In this embodiment, refer to Figure 1-3 The high-strength bolt includes an integrally formed screw head 1 and a screw rod 2, the screw rod 2 is provided with an external thread, and also includes an adjusting nut 3, a sliding disk 4, a pressure spring 5 and a pressure gasket 6. The adjusting nut is threadedly connected to the screw rod, the two ends of the pressure spring are connected to the sliding disk and the pressure gasket, guide grooves 7 are provided on both sides of the screw rod, and guide protrusions 8 that slide with the above-mentioned guide grooves are provided in the through holes of the sliding disk and the pressure gasket, and a plurality of friction-increasing convex strips 9 are provided on the surface of the pressure gasket.

[0021] In the above technical solution, by setting an adjusting nut, a sliding disk, a pressure spring and a pressure gasket, the adjusting nut can be used to adjust the position of the pressure gasket during tightening so that the pressure gasket is pressed tightly against the fastener, which makes it more flexible to use and can adapt to the installation requirements of different scenarios. In addition, the pressure spring can keep the pressure gasket under high-pressure elastic force at all times, making it difficult to loosen and having a good anti-loosening effect.

[0022] Among them, a plurality of friction-increasing convex strips are arranged on the surface of the pressure pad, which can increase the friction of the surface of the pressure pad and improve the relaxation and anti-slip effect.

[0023] Among them, by arranging the guide protrusion and the guide groove, the sliding plate and the pressure gasket are guided and limited to prevent them from rotating, thereby ensuring the anti-loosening effect.

[0024] Specifically, a steel ball hole 10 is provided on the surface of the pressure gasket on one side of the adjusting nut, and a rolling steel ball 11 is movably installed in the steel ball hole.

[0025] The friction between the adjusting nut and the sliding plate is reduced by arranging the rolling steel balls.

[0026] Specifically, the friction-increasing convex strips are composed of a large slope portion 12 and a small slope portion 13; and the height of the friction-increasing convex strips is less than 2 mm.

[0027] As shown in the figure, the friction-increasing convex strip is composed of a large slope part and a small slope part, which can achieve a better anti-slip effect and avoid relative rotation between the pressure gasket and the fastener, thereby improving the anti-loosening effect.

[0028] In order to improve the strength and service life of the screw head and the screw rod, a reinforcement layer is sprayed on the surface of the screw head and the screw rod, and a wear-resistant layer is sprayed on the surface of the reinforcement layer.

[0029] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the utility model concept of the utility model is not limited to this utility model. Any modification using the utility model concept will be included in the scope of protection of this patent right.

Claims

1. A high-strength bolt, comprising an integrally formed screw head and a screw rod, wherein the screw rod is provided with an external thread, characterized in that: It also includes an adjusting nut, a sliding disk, a pressure spring and a pressure gasket. The adjusting nut is threadedly connected to the screw rod, and both ends of the pressure spring are connected to the sliding disk and the pressure gasket. Guide grooves are provided on both sides of the screw rod. Guide protrusions that slide with the above-mentioned guide grooves are provided in the through holes of the sliding disk and the pressure gasket, and a plurality of friction-increasing protrusions are provided on the surface of the pressure gasket.

2. The high-strength bolt according to claim 1, characterized in that: A steel ball hole is provided on the surface of the pressure gasket located on one side of the adjusting nut, and a rolling steel ball is movably installed in the steel ball hole.

3. The high-strength bolt according to claim 1 or 2, characterized in that: The friction-increasing convex strip consists of a large slope portion and a small slope portion.

4. The high-strength bolt according to claim 1, characterized in that: The height of the friction-increasing convex strips is less than 2 mm.

5. The high-strength bolt according to claim 1, characterized in that: A reinforcement layer is sprayed on the surface of the screw head and the screw rod, and a wear-resistant layer is sprayed on the surface of the reinforcement layer.

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