High-strength large hexagon bolt

Abstract

The utility model discloses a high-strength large hexagon bolt which comprises a bolt end portion and a bolt rod portion, the bolt rod portion is connected with a fastening nut through threads, two protective sleeves are sleeved on the outer side of the bolt rod portion, arc-shaped notches are arranged on the protective sleeves, and protective covers are connected on the outer sides of the protective sleeves. The protective sleeve has the advantages that the arc-shaped notch is formed in the protective sleeve body, when the end of the bolt is fixed through a tool, the tool can stretch out of the arc-shaped notch, then the bolt can be fixed conveniently, after the bolt is installed, the bolt can be completely covered through connection of the protective cover and the protective sleeve body, and the protective sleeve is convenient to use. And therefore, the bolt can be protected, moisture in the air is prevented from corroding the bolt, and the service life of the bolt is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and more specifically, to a high-strength large hexagonal bolt. Background Technology

[0002] A bolt is a mechanical part, a type of fastener consisting of a head and a thread. It needs to be used with a nut to fasten two parts with through holes. When in use, bolts are easily corroded by moisture in the external environment, which affects their service life. Although there are bolts with protective sleeves, force needs to be applied to the protective sleeve when installing the bolt, which can easily damage the protective sleeve and affect the anti-corrosion effect.

[0003] In the prior art, for example, patent number CN202323315921.0, patent name is a bolt anti-corrosion sleeve structure, which mainly protects the bolt by setting a protective sleeve and an insulating cover on the outside of the bolt. The insulating cover can be removed so that no force is applied to the protective sleeve when installing the bolt, which can prevent the protective sleeve from being damaged. However, there are some problems in its use. When the protective sleeve protects the end of the bolt, it will completely cover the end of the bolt, which makes it inconvenient to fix the end of the bolt, and makes the installation of the bolt time-consuming and laborious. Utility Model Content

[0004] The purpose of this invention is to solve the problem that it is inconvenient to fix the bolt end when the protective sleeve completely covers it, and a high-strength large hexagonal bolt is designed.

[0005] To achieve the above objectives, the technical solution of this utility model is a high-strength large hexagonal bolt, comprising a bolt end and a bolt shank. The bolt shank has external threads on its outer side. Both the bolt end and the outer side of the bolt shank are coated with an anti-rust coating. A fastening nut is threadedly connected to the bolt shank. Two protective sleeves are fitted on the outer side of the bolt shank. One protective sleeve protects the bolt end, and the other protective sleeve protects the bolt shank and the fastening nut. An arc-shaped notch is opened on the protective sleeve, and a protective cap is connected to the outer side of the protective sleeve.

[0006] Furthermore, the protective sleeve has external threads on its outer side, and the protective cover has internal threads on its inner side. The protective cover is installed on the protective sleeve on the outer side of the bolt end via a threaded connection.

[0007] Furthermore, a connecting sleeve is provided on the outer side of the bolt shank. One end of the connecting sleeve is provided with an internal thread, and the other end of the connecting sleeve is provided with an external thread. The internal thread of the connecting sleeve is connected to the external thread of the protective sleeve by a thread, and the external thread of the connecting sleeve is connected to the internal thread of the protective cover by a thread.

[0008] The beneficial effects of this utility model are as follows: by opening an arc-shaped notch on the protective sleeve, the tool can be extended from the arc-shaped notch when fixing the end of the bolt, which facilitates the fixing of the bolt. After the bolt is installed, the bolt can be completely covered by the connection between the protective cover and the protective sleeve, thereby protecting the bolt, preventing moisture in the air from corroding the bolt, and extending the service life of the bolt. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of a high-strength large hexagonal bolt described in this utility model;

[0010] Figure 2 This is a cross-sectional schematic diagram of a high-strength large hexagonal bolt according to the present invention;

[0011] In the diagram, 1 is the bolt end; 2 is the bolt shank; 3 is the fastening nut; 4 is the protective sleeve; 5 is the arc-shaped notch; 6 is the protective cover; and 7 is the connecting sleeve. Detailed Implementation

[0012] 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.

[0013] 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.

[0014] This utility model provides, for example Figure 1-2The high-strength large hexagonal bolt shown includes a bolt end 1 and a bolt shank 2. The bolt shank 2 has external threads on its outer side. Both the bolt end 1 and the bolt shank 2 have anti-rust coatings on their outer sides. The bolt shank 2 is connected to a fastening nut 3 via threads. Two protective sleeves 4 are fitted on the outer side of the bolt shank 2. One protective sleeve 4 protects the bolt end 1, and the other protective sleeve 4 protects the bolt shank 2 and the fastening nut 3. The protective sleeve 4 has an arc-shaped notch 5, and a protective cap 6 is connected to the outer side of the protective sleeve 4.

[0015] The process of using this bolt is as follows: A protective sleeve 4 is fitted onto the outside of the bolt end 1. Then, the bolt shank 2 is passed through the through hole on the fixing object. A second protective sleeve is fitted onto the outside of the bolt shank 2. The fastening nut 3 is then installed on the bolt shank 2 via a threaded connection. A tool is used to fix the bolt end 1, with the tool extending from the arc-shaped notch 5. Another tool is then used to fit the fastening nut 3, with the tool extending from the arc-shaped notch 5. The tool can rotate the fastening nut 3, thus completing the bolt installation. After the bolt is installed, a protective cap 6 is placed on the outside of the protective sleeve 4 to protect the bolt and extend its service life.

[0016] Refer to the instruction manual appendix Figure 1 The protective sleeve 4 has external threads on the outside and the protective cover 6 has internal threads on the inside. The protective cover 6 is installed on the protective sleeve 4 on the outside of the bolt end 1 through a threaded connection. The protective cover 6 can be quickly installed and removed from the protective sleeve 4 through the threaded connection, thereby improving work efficiency.

[0017] Refer to the instruction manual appendix Figure 1 Included with instruction manual Figure 2 A connecting sleeve 7 is provided on the outside of the bolt shank 2. One end of the connecting sleeve 7 is provided with an internal thread, and the other end of the connecting sleeve 7 is provided with an external thread. The internal thread of the connecting sleeve 7 is connected to the external thread of the protective sleeve 4 by thread. The external thread of the connecting sleeve 7 is connected to the internal thread of the protective cover 6 by thread. The connecting sleeve 7 can protect the end of the bolt shank 2 located outside the fastening nut 3. Then, the protective cover 6 is connected to the connecting sleeve 7 to protect the bolt.

[0018] 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 high-strength large hexagonal bolt, comprising a bolt end (1) and a bolt shank (2), wherein the bolt shank (2) is provided with external threads on its outer side, and both the bolt end (1) and the bolt shank (2) are provided with anti-rust coatings on their outer sides, and the bolt shank (2) is connected to a fastening nut (3) by threads, characterized in that, Two protective sleeves (4) are fitted on the outside of the bolt shank (2). One protective sleeve (4) protects the bolt end (1), and the other protective sleeve (4) protects the bolt shank (2) and the fastening nut (3). The protective sleeve (4) has an arc-shaped notch (5), and a protective cover (6) is connected to the outside of the protective sleeve (4).

2. The high-strength large hexagonal bolt according to claim 1, characterized in that, The protective sleeve (4) has an external thread on the outside and the protective cover (6) has an internal thread on the inside. The protective cover (6) is installed on the protective sleeve (4) on the outside of the bolt end (1) by a threaded connection.

3. A high-strength large hexagonal bolt according to claim 2, characterized in that, The bolt rod (2) is provided with a connecting sleeve (7) on the outside. One end of the connecting sleeve (7) is provided with an internal thread, and the other end of the connecting sleeve (7) is provided with an external thread. The internal thread of the connecting sleeve (7) is connected to the external thread of the protective sleeve (4) by a thread, and the external thread of the connecting sleeve (7) is connected to the internal thread of the protective cover (6) by a thread.

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