Wear-resistant structure of roller of coal mining machine

Abstract

The utility model provides a coal mining machine roller wear-resisting structure, which comprises a roller body, at least two blade groups and an end disc, the end disc is arranged at one end of the roller body, the blade groups are spirally coiled along the axis direction of the roller, the end disc and the blade groups are fixedly provided with a plurality of tooth holders along the edge, and the tail blade of each blade group is provided with a wear-resisting structure. The wear-resisting structure comprises a first wear-resisting plate and a second wear-resisting plate, the first wear-resisting plate and the second wear-resisting plate are combined in an L shape, the first wear-resisting plate is fixedly connected with the upper surface of the tail blade, and the second wear-resisting plate is fixedly connected with the edge of the tail blade. And through the L-shaped wear-resistant structure, the surface and the edge section of the blade are protected, and the service life of the blade is prolonged.

Description

Technical Field

[0001] The utility model relates to a component of a shearer, in particular to a wear-resistant structure of a shearer drum. Background Art

[0002] The drum is one of the important components of a shearer. Its main functions include coal cutting, coal loading, and traveling along the working face, etc. These functions enable the shearer to efficiently collect coal in a coal mine. At the same time, during the high-intensity operation process, the drum is extremely vulnerable to wear. In particular, the current wear-resistant structure of the drum is unreasonably set and cannot provide comprehensive protection for the blade group, resulting in rapid wear of the blade group, shortening its service life, and increasing the operation cost. Content of the Utility Model

[0003] The purpose of the utility model is to address the defects existing in the above technologies and provide a wear-resistant structure for a shearer drum. An L-shaped wear-resistant structure is provided at the tail leaf of the drum, and at the same time, the surface and edge section of the blade are protected to extend the service life of the blade.

[0004] The purpose of the utility model is achieved as follows: It includes a cylinder body, at least two blade groups, and an end plate. The end plate is arranged at one end of the cylinder body. The blade groups are spirally arranged along the axis direction of the drum. A plurality of tooth seats are fixedly arranged along the edge of the end plate and the blade groups. The tail leaf of the blade group is provided with a wear-resistant structure;

[0005] The wear-resistant structure includes a first wear-resistant plate and a second wear-resistant plate. Specifically, the first wear-resistant plate and the second wear-resistant plate are made of wear-resistant alloy materials. The first wear-resistant plate and the second wear-resistant plate are combined in an L shape. The first wear-resistant plate is fixedly connected to the upper surface of the tail leaf, and the second wear-resistant plate is fixedly connected to the edge of the tail leaf.

[0006] In the above structure, the tail leaf of the blade group is provided with a recessed area. The first wear-resistant plate is arranged in the recessed area and is fixedly connected to the bottom surface of the recessed area. The upper surface of the first wear-resistant plate is higher than the upper surface of the tail leaf.

[0007] In the above structure, the edge of the tail leaf is indented towards the axis direction of the cylinder body compared with its adjacent blade. Among them, the indented dimension is the same as the thickness of the second wear-resistant plate.

[0008] In the above structure, the recessed depth of the recessed area of the tail leaf is 10 mm. After the first wear-resistant plate is sunk by 10 mm, the tangential force of the coal along the upper surface of the blade can be reduced, which helps to improve the coal loading effect.

[0009] In the above structure, the indented dimension of the edge of the tail leaf is 20 mm. In this design, the thickness of the second wear-resistant plate is 20 mm. After the edge of the tail leaf is indented by 20 mm, the total original dimension is maintained after the second wear-resistant plate is connected to the edge of the tail leaf.

[0010] In the above structure, the tail blade and the wear-resistant structure are connected by welding.

[0011] Advantages of the present utility model: An L-shaped wear-resistant structure is provided at the tail blade of the drum. The upper surface of the blade is protected by the first wear-resistant plate of the L-shaped wear-resistant structure, and the edge section of the blade is protected by the second wear-resistant plate of the L-shaped wear-resistant structure, thereby extending the service life of the blade; A concave area is provided at the connection between the tail blade and the first wear-resistant plate. Without changing the original thickness of the first wear-resistant plate, the protruding height of the first wear-resistant plate is reduced, and the tangential force of the coal along the upper surface of the blade is reduced, which helps to improve the coal loading effect. Description of the Drawings

[0012] Figure 1 is a three-dimensional structural schematic diagram of the wear-resistant structure of the drum of the present utility model;

[0013] Figure 2 is a schematic diagram of a partially enlarged view of the wear-resistant structure of the present utility model;

[0014] Figure 3 is a planar structural schematic diagram of the wear-resistant structure of the drum of the present utility model. Detailed Implementation Manner

[0015] The present application provides a wear-resistant structure for a shearer drum. An L-shaped wear-resistant structure is provided at the tail blade of the drum. The upper surface of the blade is protected by the first wear-resistant plate of the L-shaped wear-resistant structure, and the edge section of the blade is protected by the second wear-resistant plate of the L-shaped wear-resistant structure, thereby extending the service life of the blade. It solves the problem in the prior art that only one wear-resistant plate is provided on the upper surface of the tail blade, which cannot provide comprehensive protection for the blade, resulting in poor wear resistance and short service life.

[0016] The following further illustrates this embodiment with reference to the drawings:

[0017] By Figure 1 — Figure 3It can be seen that the present application includes a cylinder body 1, at least two blade groups 2 and end plates 3. The end plates 3 are arranged at one end of the cylinder body 1. The blade groups 2 are spirally arranged along the axis direction of the cylinder 1. A plurality of tooth seats 4 are fixedly arranged along the edges of the end plates 3 and the blade groups 2. The trailing blade 21 of the blade group 2 is provided with a wear-resistant structure 5. The wear-resistant structure 5 includes a first wear-resistant plate 51 and a second wear-resistant plate 52. Specifically, the first wear-resistant plate 51 and the second wear-resistant plate 52 are made of wear-resistant alloy materials. The first wear-resistant plate 51 and the second wear-resistant plate 52 are combined in an L shape. The first wear-resistant plate 51 is fixedly connected to the upper surface of the trailing blade 21, and the second wear-resistant plate 52 is fixedly connected to the edge of the trailing blade 21. In this embodiment, an L-shaped wear-resistant structure is arranged on the trailing blade. The upper surface of the blade is protected by the first wear-resistant plate of the L-shaped wear-resistant structure, and the edge section of the blade is protected by the second wear-resistant plate of the L-shaped wear-resistant structure, thereby prolonging the service life of the blade.

[0018] On the basis of the above embodiment, preferably, a recessed area 6 is provided on the trailing blade 21 of the blade group 2. The first wear-resistant plate 51 is arranged in the recessed area 6 and is fixedly connected to the bottom surface of the recessed area 6. The upper surface of the first wear-resistant plate 51 is higher than the upper surface of the trailing blade 21. In this embodiment, a recessed area 6 is arranged on the upper surface of the trailing blade 21. Without changing the original thickness of the first wear-resistant plate 51, the protruding height of the first wear-resistant plate 51 compared with the upper surface of the trailing blade 21 is reduced, and the tangential force of the coal along the upper surface of the blade is reduced, which helps to improve the coal loading effect.

[0019] On the basis of the above embodiment, preferably, the edge 210 of the trailing blade 21 is indented towards the axis direction of the cylinder body 1 compared with its adjacent blade 22, wherein the indentation dimension is the same as the thickness of the second wear-resistant plate 52. The edge 210 is indented, and the indentation dimension is the same as the thickness of the second wear-resistant plate 52. Without changing the original outer contour dimension, the second wear-resistant plate 52 is added, enhancing the wear resistance of the trailing blade 21 and prolonging its service life.

[0020] On the basis of the above embodiment, preferably, the recessed depth of the recessed area 6 of the trailing blade 21 is 10 mm. After the first wear-resistant plate 51 is sunk by 10 mm, the tangential force of the coal along the upper surface of the blade can be reduced, which helps to improve the coal loading effect.

[0021] On the basis of the above embodiment, preferably, the indentation dimension of the edge 210 of the trailing blade 21 is 20 mm. In this design, the thickness of the second wear-resistant plate 52 is 20 mm. After the edge 210 of the trailing blade 21 is indented by 20 mm, the original total dimension is maintained after the second wear-resistant plate 52 is connected to the edge 210 of the trailing blade 21.

[0022] On the basis of the above embodiments, preferably, the tail blade 21 and the wear-resistant structure 5 are connected by welding. Since the shearer drum is subjected to large forces and high strength during operation, the welding connection method makes the structure more stable.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A wear-resistant structure of a coal mining machine drum, comprising a drum body, at least two blade groups and an end plate, characterized in that: The end plate is arranged at one end of the cylinder, the blade group is spirally arranged along the axis direction of the cylinder, a plurality of tooth seats are fixedly arranged along the edge of the end plate and the blade group, and the tail blade of the blade group is provided with a wear-resistant structure; The wear-resistant structure includes a first wear-resistant plate and a second wear-resistant plate, the first wear-resistant plate and the second wear-resistant plate are combined in an L shape, the first wear-resistant plate is fixedly connected to the upper surface of the tail blade, and the second wear-resistant plate is fixedly connected to the edge of the tail blade.

2. The wear-resistant structure of the coal mining machine drum according to claim 1 is characterized in that: The tail blade of the blade group is provided with a recessed area, the first wear-resistant plate is arranged in the recessed area, the first wear-resistant plate is fixedly connected to the bottom surface of the recessed area, and the upper surface of the first wear-resistant plate is higher than the upper surface of the tail blade.

3. The wear-resistant structure of the coal mining machine drum according to claim 2 is characterized in that: The edge of the tail blade is indented toward the axis of the cylinder body compared with its adjacent blade, wherein the indentation size is the same as the thickness of the second wear-resistant plate.

4. The wear-resistant structure of the coal mining machine drum according to claim 2 is characterized in that: The depression depth of the tail lobe depression area is 10 mm.

5. The wear-resistant structure of the coal mining machine drum according to claim 3 is characterized in that: The indentation size of the edge of the tail blade is 20 mm.

6. The wear-resistant structure of the coal mining machine drum according to claim 1 is characterized in that: The tail blade and the wear-resistant structure are connected by welding.

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