A rubber-lined wear-resistant bolt assembly

Abstract

This utility model discloses a rubber-lined wear-resistant bolt assembly, belonging to the field of mining equipment. It includes a rubber-lined bolt, a rubber-lined nut, and a rubber cap. The rubber-lined bolt comprises wear-resistant rubber and a high-strength bolt. A flat washer is provided inside the countersunk hole of the wear-resistant rubber bolt. The high-strength bolt is connected to the wear-resistant rubber bolt through a round hole and a retaining post. The rubber-lined nut includes a thick nut threadedly connected to the high-strength bolt and wear-resistant rubber for the nut. A flat washer is provided inside the countersunk hole of the wear-resistant rubber nut. The bowl-shaped rubber cap has a countersunk hole at one end and a through hole at the other. The thick nut is placed inside the countersunk hole of the rubber cap. This utility model effectively prevents wear on bolts caused by slurry in the flotation cell, is easy to install and use, provides good protection, and solves problems such as poor wear resistance of bolts in the flotation cell and easy shedding of wear-resistant materials.

Description

Technical Field

[0001] This utility model relates to a rubber-lined wear-resistant bolt assembly, belonging to the field of mining equipment. Background Technology

[0002] Inside the flotation machine, mineral particles move at high speed in multiple dimensions under the action of the rotating impeller, causing severe wear on the internal bolts. The traditional method of bolt wear resistance is to apply wear-resistant materials such as diamond abrasive to the bolts. However, this method has a long construction period, and the wear-resistant material must be destructively removed when repairing or replacing the connecting parts, making it extremely inconvenient to use.

[0003] Utility model patent CN222797870U discloses a wear-resistant bolt in the field of connectors, comprising a hexagonal head and a mounting post integrally formed at the bottom end of the hexagonal head. A quick-release sleeve is provided around the mounting post, and a spring washer is provided at the bottom end of the quick-release sleeve. A cross-shaped connecting nail is threaded to the bottom end of the mounting post, and the mounting post and the quick-release sleeve are installed via the cross-shaped connecting nail. This wear-resistant bolt does not solve the problem of bolt wear resistance, but only addresses the issue of quick replacement after bolt wear. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a rubber-lined wear-resistant bolt assembly.

[0005] The technical solution provided by this utility model is as follows: A rubber-lined wear-resistant bolt assembly, characterized in that it includes a rubber-lined bolt, a rubber-lined nut, and a rubber cap; the rubber-lined bolt includes a bolt wear-resistant rubber and a high-strength bolt; one end of the bolt wear-resistant rubber is provided with a bolt countersunk hole, a flat washer is provided in the bolt countersunk hole, the tail of the high-strength bolt is provided with a round hole, the bolt wear-resistant rubber is provided with a retaining post that matches the round hole, the bolt wear-resistant rubber is fitted onto the tail of the high-strength bolt and the retaining post is placed in the round hole;

[0006] The rubber-lined nut includes a thick nut that is threaded to a high-strength bolt. The thick nut is covered with a wear-resistant rubber. One end of the wear-resistant rubber is provided with a countersunk hole, and a flat washer is provided in the countersunk hole. The rubber-lined nut is covered with a bowl-shaped rubber cap. One end of the rubber cap is provided with a countersunk hole, and the other end is provided with a through hole. The thick nut is placed in the countersunk hole of the rubber cap.

[0007] Furthermore, the countersunk hole depth of the nut is the same as that of the bolt countersunk hole, the countersunk hole depth A is 0-1 mm larger than the thickness of the flat washer, the countersunk hole diameter of the nut is the same as that of the bolt countersunk hole, and the countersunk hole diameter B is 0-1 mm larger than the outer diameter of the flat washer.

[0008] Furthermore, the length E of the connection between the wear-resistant rubber of the nut and the thick nut is half the length D of the thick nut.

[0009] Furthermore, the circumference of the countersunk hole in the rubber cap is 0-5 mm smaller than the circumference of the hexagonal side of the thick nut, and the countersunk hole depth F of the rubber cap is 0-1 mm larger than half the length of the thick nut.

[0010] Furthermore, the diameter G of the through hole in the rubber cap is 0-2 mm smaller than the outer diameter C of the high-strength bolt.

[0011] The beneficial effects of this utility model are as follows: This utility model includes a rubber-lined bolt, a flat washer, a rubber-lined nut, and a rubber cap. The rubber-lined bolt includes a bolt wear-resistant rubber and a high-strength bolt; the rubber-lined nut includes a thick nut and a nut wear-resistant rubber. One end of the wear-resistant rubber of the rubber-lined bolt has a countersunk hole for installing the flat washer. The depth of the countersunk hole is 0-1 mm greater than the thickness of the flat washer, and the diameter of the countersunk hole is 0-1 mm greater than the outer diameter of the flat washer, facilitating washer installation while ensuring effective protection. The tail of the high-strength bolt has a round hole, and the wear-resistant rubber of the bolt has a retaining post that matches the round hole, ensuring a full connection between the rubber-lined nut, bolt wear-resistant rubber, and the high-strength bolt, preventing it from easily falling off. One end of the wear-resistant rubber of the rubber-lined nut has a countersunk hole for installing the flat washer. The depth of the countersunk hole is the same as the depth of the countersunk hole of the rubber-lined bolt, 0-1 mm greater than the thickness of the flat washer, and the diameter of the countersunk hole is the same as the diameter of the countersunk hole of the rubber-lined bolt, but larger than the outer diameter of the flat washer, facilitating washer installation while ensuring effective protection.

[0012] The length of the wear-resistant rubber in the rubber-lined nut that engages with the thick nut is half the length of the thick nut. The unengaged portion is used for tightening the rubber-lined nut with a wrench during installation, facilitating installation without damaging the rubber lining. The rubber cap has a bowl-shaped structure with a countersunk hole at one end and a through hole at the other. The circumference of the countersunk hole in the rubber cap is 0-5 mm smaller than the circumference of the six sides of the thick nut. During installation, the elasticity of the rubber allows the thick nut to be inserted into the countersunk hole, causing the rubber cap to deform and generate friction, resulting in a tight connection between the rubber-lined nut and the rubber cap. The depth of the countersunk hole in the rubber cap is 0-1 mm greater than half the length of the thick nut, facilitating the installation of the rubber cap and protecting the unlined portion of the thick nut. The diameter of the through hole in the rubber cap is 0-2 mm smaller than the outer diameter of the high-strength bolt, ensuring a tight fit between the through hole and the outer diameter of the high-strength bolt, providing a seal and preventing detachment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the rubber-lined bolt of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the rubber-lined nut of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the rubber cap of this utility model;

[0017] In the diagram, 1. Rubber-lined bolt; 11. Bolt wear-resistant rubber; 12. Round hole; 13. Bolt countersunk hole; 14. High-strength bolt; 2. Flat washer; 3. Rubber-lined nut; 31. Thick nut; 32. Nut wear-resistant rubber; 33. Nut countersunk hole; 4. Rubber cap; 41. Rubber cap countersunk hole; 42. Through hole. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0019] like Figures 1-4 As shown, a rubber-lined wear-resistant bolt assembly includes a rubber-lined bolt 1, a flat washer 2, a rubber-lined nut 3, and a rubber cap 3. The rubber-lined bolt 1 includes a wear-resistant rubber 11 and a high-strength bolt 14. One end of the wear-resistant rubber 11 of the rubber-lined bolt 1 has a countersunk hole 13 for installing the flat washer 2. The countersunk hole depth A is 0-1 mm greater than the thickness of the flat washer 2, and the countersunk hole diameter B is 0-1 mm greater than the outer diameter of the flat washer 2, facilitating the installation of the flat washer 2 while ensuring effective protection. The high-strength bolt 14 of the rubber-lined bolt 1 has a round hole 12 at its tail. The wear-resistant rubber 11 of the rubber-lined bolt 1 has a retaining post that matches the round hole 12. The wear-resistant rubber 11 fits onto the tail of the high-strength bolt 14, and the retaining post is placed inside the round hole 12, ensuring a full connection between the wear-resistant rubber 11 and the high-strength bolt 14, preventing it from easily falling off.

[0020] The rubber-lined nut 3 includes a thick nut 31 that is threaded onto a high-strength bolt 14. The thick nut 31 is covered with a wear-resistant rubber 32. One end of the wear-resistant rubber 32 of the rubber-lined nut 3 has a countersunk hole 33 for installing a flat washer 2. The countersunk hole depth 33 is the same as the countersunk hole depth A of the bolt countersunk hole 13, but 0-1 mm larger than the thickness of the flat washer 2. The countersunk hole diameter 33 is the same as the countersunk hole diameter B of the bolt countersunk hole 13, but 0-1 mm larger than the outer diameter of the flat washer 2, facilitating the installation of the flat washer 2 while ensuring effective wear protection. The engagement length E between the wear-resistant rubber 32 and the thick nut 31 is half the length D of the thick nut. The unengaged portion is used for tightening the rubber-lined nut 3 with a wrench during installation, facilitating installation without damaging the rubber protective layer.

[0021] The rubber-lined nut 3 is fitted with a rubber cap 4, which has a bowl-shaped structure. One end of the rubber cap 4 has a countersunk hole 41, and the other end has a through hole 42. The circumference of the countersunk hole 41 of the rubber cap 4 is 0-5 mm smaller than the circumference of the hexagonal sides of the thick nut 31. During installation, relying on the elasticity of the rubber, the thick nut 31 is inserted into the countersunk hole 41, causing the rubber cap 4 to deform and generate friction, thus tightly connecting the rubber-lined nut 3 and the rubber cap 4. The countersunk hole depth F of the rubber cap 4 is 0-1 mm larger than half the length of the thick nut 31, facilitating the installation of the rubber cap 4 and protecting the unlined portion of the thick nut 31. The through hole diameter G of the rubber cap 4 is 0-2 mm smaller than the outer diameter C of the high-strength bolt, allowing the through hole 42 to tightly engage with the outer diameter of the high-strength bolt 14, providing a seal and preventing it from falling off.

[0022] In use, first place the flat washer 2 into the countersunk hole 13 of the rubber-lined bolt 1, and then place another flat washer 2 into the countersunk hole 33 of the rubber-lined nut 3. Align the threads of the rubber-lined nut 3 and the rubber-lined bolt 1, and use a tool to rotate the unlined part of the rubber-lined nut 3 to tighten it to the rubber-lined bolt 1. Pass the through hole 42 of the rubber cap 4 through the outer diameter of the high-strength bolt 14 of the rubber-lined bolt 1, and apply a certain axial compressive force. The countersunk hole 41 partially encloses the unlined part of the rubber-lined bolt 3 and fits it fully. After installation, the high-strength bolt 14, flat washer 2, and thick nut 31 are completely covered by wear-resistant rubber, which effectively prevents the slurry in the flotation tank from wearing the bolts, making installation convenient.

[0023] It should be understood that any parts not described in detail in this specification belong to the prior art. The above embodiments are merely descriptions of preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and improvements to the technical solutions of this utility model made by those skilled in the art without departing from the spirit of this utility model should fall within the protection scope defined by the claims of this utility model.

Claims

1. A rubberized wear-resistant bolt assembly, characterized by, It includes rubber-lined bolts, rubber-lined nuts, and rubber caps; the rubber-lined bolts include wear-resistant rubber and high-strength bolts; one end of the wear-resistant rubber is provided with a countersunk hole, and a flat washer is provided in the countersunk hole; the tail of the high-strength bolt is provided with a round hole, and the wear-resistant rubber is provided with a retaining post that matches the round hole; the wear-resistant rubber is fitted onto the tail of the high-strength bolt and the retaining post is placed in the round hole. The rubber-lined nut includes a thick nut that is threaded to a high-strength bolt. The thick nut is covered with a wear-resistant rubber. One end of the wear-resistant rubber is provided with a countersunk hole, and a flat washer is provided in the countersunk hole. The rubber-lined nut is covered with a bowl-shaped rubber cap. One end of the rubber cap is provided with a countersunk hole, and the other end is provided with a through hole. The thick nut is placed in the countersunk hole of the rubber cap.

2. A rubberized wear-resistant bolt assembly according to claim 1, wherein, The countersunk hole depth of the nut is the same as that of the bolt countersunk hole. The countersunk hole depth A is 0-1 mm larger than the thickness of the flat washer. The countersunk hole diameter of the nut is the same as that of the bolt countersunk hole. The countersunk hole diameter B is 0-1 mm larger than the outer diameter of the flat washer.

3. A rubberized wear-resistant bolt assembly as defined in claim 1, wherein, The length E of the wear-resistant rubber of the nut combined with the thick nut is half the length D of the thick nut.

4. A rubberized wear-resistant bolt assembly as defined in claim 1, wherein, The circumference of the countersunk hole in the rubber cap is 0-5 mm smaller than the circumference of the hexagonal sides of the thick nut, and the countersunk hole depth F of the rubber cap is 0-1 mm larger than half the length of the thick nut.

5. A rubberized wear-resistant bolt assembly as defined in claim 1, wherein, The diameter G of the through hole in the rubber cap is 0-2 mm smaller than the outer diameter C of the high-strength bolt.

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