Corrosion-resistant steel structure torsional shear type bolt

Abstract

The utility model discloses a corrosion-resistant steel structure torsional shear type bolt which comprises a bolt body, a wabbler is integrally formed at the end, away from the end, of the bolt body, the bolt body is connected with a fastening nut through threads, and the wabbler of the bolt body forms an irregular fracture surface after being twisted off. A protective cover is installed at one end of the wabbler of the bolt body, and an adjusting block is arranged between the protective cover and the fastening nut. The torsion shear type bolt has the advantages that the protective cover is installed at the tail end of the bolt body, then rust prevention can be conducted on a fracture surface, the adjusting block is additionally arranged between the protective cover and the fastening nut, no matter how long the torsion shear type bolt remains after installation is completed, the protective cover can tightly protect the fracture surface, corrosion is prevented, and the service life of the torsion shear type bolt is prolonged. The service life of the bolt is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and more specifically, to a rust-resistant steel structure torsion shear bolt. Background Technology

[0002] Torque-shear bolts are high-strength connection components characterized by their split-end breakage mechanism and self-checking of preload through specialized tools. They are specifically designed for critical shear and tensile strength nodes in steel structures. To prevent corrosion, torsion-shear bolts typically have an anti-rust coating on their surface. However, once a torsion-shear bolt breaks, the fracture surface lacks this anti-rust coating and is susceptible to moisture and corrosion.

[0003] In the prior art, for example, patent number CN202221844307.6, patent name is a rust-resistant steel structure torque shear bolt, which mainly prevents rust by installing a protective cover at the broken position of the torque shear bolt. However, there are some problems in its use. Because the torque shear bolt is used in different positions, the remaining length of its end after installation is different, which makes it impossible to accurately fit the connecting ring on the protective cover onto the connecting cylinder, making it inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to solve the problem of easy corrosion at the fracture site of a torsion shear bolt, and to design a corrosion-resistant steel structure torsion shear bolt.

[0005] To achieve the above objectives, the technical solution of this utility model is a rust-resistant steel structure torsion shear bolt, comprising a bolt body, an integrally formed spline head at one end of the bolt body away from the end, a fastening nut connected to the bolt body by threads, the bolt body being mounted on a fixed object by the fastening nut, the spline head of the bolt body forming an irregular fracture surface after being torn off, a protective cap being installed at one end of the spline head of the bolt body, an adjusting block being provided between the protective cap and the fastening nut, the adjusting block being able to adjust the distance between the protective cap and the fracture surface, the protective cap protecting the fracture surface from air corrosion.

[0006] Furthermore, the protective cover is a hexagonal prism with a circular groove on one side and an internal thread that fits into the bolt body on the inner side of the circular groove.

[0007] Furthermore, the surface of the hexagonal prism away from the circular groove is a hemisphere.

[0008] Furthermore, the adjusting block consists of 1-5 flat washers.

[0009] The beneficial effects of this utility model are as follows: by installing the protective cover at the end of the bolt body, the fracture surface can be protected against rust. By adding an adjusting block between the protective cover and the fastening nut, no matter how much length of the torsion shear bolt remains after installation, the protective cover can tightly protect the fracture surface, prevent corrosion, and extend the service life of the bolt. Attached Figure Description

[0010] Figure 1 This is a structural schematic diagram of a corrosion-resistant steel structure torsion shear bolt according to the present invention;

[0011] Figure 2 This is a side view schematic diagram of a rust-resistant steel structure torsion shear bolt according to the present invention;

[0012] Figure 3 This is an isometric view of a corrosion-resistant steel structure torsion shear bolt according to the present invention;

[0013] In the diagram, 1. Bolt body; 2. Torx head; 3. Fastening nut; 4. Fracture surface; 5. Protective cover; 6. Adjusting block; 7. Hexagonal prism; 8. Circular groove; 9. Hemisphere; 10. Flat washer. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] This utility model provides, for example Figure 1-3The diagram shows a corrosion-resistant steel structure torsion shear bolt, comprising a bolt body 1, with a spline head 2 integrally formed at one end of the bolt body 1 away from the end. A fastening nut 3 is threaded onto the bolt body 1, and the bolt body 1 is mounted on a fixed object via the fastening nut 3. After the spline head 2 of the bolt body 1 is torn off, it forms an irregular fracture surface 4. A protective cap 5 is installed at one end of the spline head 2 of the bolt body 1. An adjusting block 6 is provided between the protective cap 5 and the fastening nut 3. The adjusting block 6 can adjust the distance between the protective cap 5 and the fracture surface 4. The protective cap 5 protects the fracture surface 4 from air corrosion.

[0017] The process of preventing rust on this bolt is as follows: After passing one end of the bolt body 1 through the fixed object and installing the bolt body 1 by tightening the nut 3, use the corresponding tool to break off the spline head 2 and form a fracture surface 4. Then, place the adjusting block 6 between the protective cover 5 and the tightening nut 3 to adjust the remaining length of the bolt body 1. Then, install the protective cover 5 on the bolt body 1 to cover the fracture surface 4, which can prevent the outside air from corroding the fracture surface 4 and extend the service life of the torsion shear bolt.

[0018] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Included with instruction manual Figure 3 The protective cover 5 is a hexagonal prism 7. A circular groove 8 is opened on one side of the hexagonal prism 7. The inner side of the circular groove 8 is provided with an internal thread that fits with the bolt body 1. The circular groove 8 covers one end of the bolt body 1, the remaining sprite head 2, and the fracture surface 4, which can prevent air from corroding the fracture surface. The protective cover 5 is a hexagonal prism 7, which makes it easy to tighten the hexagonal prism 7 with the tool for tightening the nut 3. The hexagonal prism 7 can be installed on the bolt body 1 through the internal thread to prevent the hexagonal prism 7 from falling off.

[0019] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Included with instruction manual Figure 3 The surface of the hexagonal prism 7 away from the circular groove 8 is a hemisphere 9. The hemisphere 9 can reduce the injury to workers if they accidentally touch the torsion shear bolt.

[0020] Refer to the instruction manual appendix Figure 1 Instruction manual attached Figure 2 Included with instruction manual Figure 3The adjusting block 6 consists of 1-5 flat washers 10. The corresponding number of flat washers 10 are fitted onto the bolt body 1 between the protective cover 5 and the fastening nut 3. After the hexagonal prism 7 is screwed onto the bolt body 1, the hexagonal prism 7, the flat washers 10, and the fastening nut 3 are tightly fitted together. On the one hand, this prevents the threaded connection between the hexagonal prism 7 and the bolt body 1 from loosening. On the other hand, it also prevents air from entering the circular groove 8 from the gaps between the threads, thus better protecting the fracture surface 4.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rust-resistant steel structure torsion shear bolt, comprising a bolt body (1), wherein one end of the bolt body (1) away from the end is integrally formed with a spline head (2), a fastening nut (3) is threadedly connected to the bolt body (1), the bolt body (1) is mounted on a fixed object by the fastening nut (3), and the spline head (2) of the bolt body (1) forms an irregular fracture surface (4) after being torn off, characterized in that, A protective cap (5) is installed at one end of the plum blossom head (2) of the bolt body (1). An adjusting block (6) is provided between the protective cap (5) and the fastening nut (3). The adjusting block (6) can adjust the distance between the protective cap (5) and the fracture surface (4). The protective cap (5) protects the fracture surface (4) from air corrosion.

2. The rust-resistant, torsionally shearable bolt for steel structures according to claim 1, characterized in that, The protective cover (5) is a hexagonal prism (7), and a circular groove (8) is opened on one side of the hexagonal prism (7). The inner side of the circular groove (8) is provided with an internal thread that fits with the bolt body (1).

3. The rust-resistant, torsionally shearable bolt of claim 2, wherein: The surface of the hexagonal prism (7) away from the circular groove (8) is a hemisphere (9).

4. The rust-resistant, torsionally shearable bolt for steel structures according to claim 2, characterized in that, The adjusting block (6) consists of 1-5 flat washers (10).

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