Sleeve tooth not prone to falling off and used for coal mining

Abstract

The utility model relates to the field of coal mining tools, and discloses a suite tooth not easy to fall off for coal mining, which comprises a tooth handle, a fluted disc is arranged at the upper end of the tooth handle, a tooth head is arranged at the center of the upper end face of the fluted disc, and a plurality of contact heads are arranged at the center of the side wall of the tooth head close to the upper end. An annular groove is formed in the center of the side wall of the tooth handle close to the lower end. According to the utility model, the whole body is integrally formed and cast, so that the use strength of the whole body is higher, the problems of tooth throwing, tooth breaking and tooth falling are reduced to the greatest extent in the high-speed rotating process, and meanwhile, the special coating is arranged on the surface, so that the wear resistance and the corrosion resistance can be enhanced.

Description

Technical Field

[0001] The utility model relates to the field of coal mining tools, in particular to a set of teeth used in coal mining which are not easy to fall off. Background Art

[0002] Coal mines are areas where humans mine coal resources in coal-rich mining areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig tunnels underground to mine coal, which is an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine coal, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. The scope of coal mines includes a large area above and below the ground and related facilities. Coal mines are reasonable spaces excavated by humans when digging geological layers rich in coal, usually including tunnels, shafts, and mining faces. Coal is the main solid fuel and a type of combustible organic rock, and picks are cutting tools used in coal mining machines and tunnel excavation machinery in mines.

[0003] However, the existing set teeth still have some shortcomings and areas for improvement during actual use. Most of the existing set teeth adopt a split structure, usually a tooth sleeve and a pick are used in combination. During coal mining construction, the pick and the tooth sleeve are in a high-speed rotation process, which is prone to problems such as tooth throwing, tooth breaking, and tooth falling, and the overall use effect during use is not good. Therefore, technicians in this field provide a set of teeth that are not easy to fall off for coal mining to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, and a set of teeth that are not easy to fall off are proposed for coal mining. By setting the whole as an one-piece casting, the overall use strength is higher, and the problems of tooth throwing, tooth breaking and tooth falling are minimized during high-speed rotation. At the same time, a special coating is provided on the surface to enhance wear resistance and corrosion resistance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a set of teeth that are not easy to fall off for coal mining, comprising a tooth shank, a tooth disc is arranged at the upper end of the tooth shank, a tooth head is arranged at the center of the upper end surface of the tooth disc, a plurality of contact heads are arranged at the center of the side wall of the tooth head near the upper end, a ring groove is arranged at the center of the side wall of the tooth shank near the lower end, and the tooth shank, the tooth disc and the tooth head are cast in one piece;

[0006] Through the above technical solution, by setting the whole as an one-piece casting, the overall use strength is higher, and the problems of tooth throwing, tooth breaking and tooth falling are minimized during high-speed rotation. At the same time, a special coating is provided on the surface to enhance wear resistance and corrosion resistance.

[0007] Further, the shape of the tooth head is conical;

[0008] Through the above technical solution, progressive mining can be achieved with better results.

[0009] Furthermore, the plurality of contact heads are connected to the inner side wall of the tooth head by welding;

[0010] Through the above technical solution, it can be installed and disassembled after heating according to the usage, avoiding overall replacement and reducing maintenance costs.

[0011] Furthermore, a curved surface is provided at the connection between the lower end of the tooth head and the toothed disc;

[0012] Through the above technical solution, better use can be made of it, the dead angle between it and the coal mine during mining can be reduced, the contact area can be increased, and the mining effect can be improved.

[0013] Furthermore, the surfaces of the tooth shank, tooth disc and tooth head are coated with a special coating, and the material of the special coating is a nitride coating;

[0014] Through the above technical solution, by adopting coating technology, the nitride coating can enhance its wear resistance and corrosion resistance.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, by setting the whole as an integrally molded casting, the overall use strength is higher, and the problems of tooth throwing, tooth breaking and tooth falling are minimized during high-speed rotation.

[0017] 2. In the present invention, a special coating is provided on the entire surface to enhance wear resistance and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an axonometric diagram of a set of teeth that are not easy to fall off for coal mining proposed by the utility model;

[0019] Figure 2 This is an axonometric diagram from another perspective of a set of teeth that are not easy to fall off for coal mining proposed by the utility model;

[0020] Figure 3 This is a front view of a set of teeth that are not easy to fall off for coal mining proposed by the utility model;

[0021] Figure 4 The utility model is a top view of a set of teeth which are not easy to fall off for coal mining.

[0022] Legend:

[0023] 1. Tooth handle; 2. Tooth disc; 3. Tooth head; 4. Contact head; 5. Ring groove. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] Reference Figure 1-4 The utility model provides an embodiment: a set of teeth that are not easy to fall off for coal mining, including a tooth shank 1, a tooth disc 2 is arranged at the upper end of the tooth shank 1, a tooth head 3 is arranged at the center of the upper end surface of the tooth disc 2, a plurality of contact heads 4 are arranged at the center of the side wall of the tooth head 3 near the upper end, and a ring groove 5 is arranged at the center of the side wall of the tooth shank 1 near the lower end. By setting the whole as an integral casting, the overall use strength is higher, and the problems of tooth throwing, tooth breaking and tooth falling are minimized during high-speed rotation.

[0026] The shank 1, the tooth disc 2 and the tooth head 3 are cast in one piece. The one-piece structure is more stable and has higher strength. The tooth head 3 is conical in shape, and progressive mining has better effect. Multiple contact heads 4 are welded to the inside of the side wall of the tooth head 3, and can be installed and removed after heating according to usage, avoiding overall replacement and reducing maintenance costs. An arc surface is provided at the connection between the lower end of the tooth head 3 and the tooth disc 2 for better use, reducing dead angles between the coal mine and the mining process, increasing the contact area and improving the mining effect. The surfaces of the shank 1, the tooth disc 2 and the tooth head 3 are coated with a special coating, and the material of the special coating is a nitride coating. By adopting coating technology, the nitride coating can enhance its wear resistance and corrosion resistance.

[0027] Working principle: The utility model is a set of teeth that are not easy to fall off for coal mining. By adopting an integral casting between the tooth shank 1, the tooth disc 2 and the tooth head 3, the overall use strength is higher, and the problems of tooth throwing, tooth breaking and tooth falling are minimized during high-speed rotation. At the same time, the surfaces of the tooth shank 1, the tooth disc 2 and the tooth head 3 are coated with a special coating, and the material of the special coating is a nitride coating. By adopting coating technology, the nitride coating can enhance its wear resistance and corrosion resistance.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A set of teeth that are not easy to fall off for coal mining, comprising a tooth handle (1), characterized in that: The upper end of the tooth shank (1) is provided with a tooth disc (2), the center of the upper end surface of the tooth disc (2) is provided with a tooth head (3), the center of the side wall of the tooth head (3) is provided with a plurality of contact heads (4) close to the upper end, the center of the side wall of the tooth shank (1) is provided with an annular groove (5) close to the lower end, and the tooth shank (1), the tooth disc (2) and the tooth head (3) are integrally cast.

2. The set of teeth that are not easy to fall off for coal mining according to claim 1 is characterized in that: The tooth head (3) is in the shape of a cone.

3. The set of teeth that are not easy to fall off for coal mining according to claim 1 is characterized in that: The plurality of contact heads (4) are all connected to the inside of the side wall of the tooth head (3) by welding.

4. The set of teeth that are not easy to fall off for coal mining according to claim 1 is characterized in that: An arc surface is provided at the connection between the lower end of the tooth head (3) and the toothed disc (2).

5. The set of teeth that are not easy to fall off for coal mining according to claim 1 is characterized in that: The surfaces of the tooth shank (1), the tooth disc (2) and the tooth head (3) are all coated with a special coating, and the material of the special coating is a nitride coating.

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