Coal mining machine roller with detachable end disc

Abstract

The invention belongs to the technical field of mining equipment, and discloses a coal mining machine drum with a detachable end disc, which comprises a drum ring, an end disc connecting sleeve and an end disc body, blades are mounted on the outer side of the drum ring, a connecting disc is welded on the inner side of the drum ring, an end cover is fastened on the connecting disc through a screw, the end disc connecting sleeve is welded on the outer side of the drum ring, and the end disc connecting sleeve is welded on the outer side of the drum ring. And the end disc body is detachably mounted on the end disc connecting sleeve. According to the technical scheme, maintenance of the roller can be completed by directly replacing the end disc body welded with the tooth holder, potential safety hazards caused by underground welding maintenance of the roller are avoided, and economic losses caused by well lifting shutdown to coal mine enterprises are reduced.

Description

Technical Field

[0001] This invention belongs to the field of mining equipment technology, and in particular relates to a coal mining machine drum with a detachable end plate. Background Technology

[0002] Coal mining machines are crucial mechanical equipment in fully mechanized coal mining faces, responsible for cutting and loading. The drum is a vital component for achieving these functions, directly impacting the coal and rock mass and bearing complex, variable loads, making it susceptible to wear and failure. The coal mining machine drum is primarily composed of welded end plates, drum rings, blades, and cutting tooth assemblies. The cutting tooth assembly, as the main cutting component, is in direct contact with the coal and rock mass, requiring higher wear resistance. The end plate structure is located at the front of the drum, and the cutting tooth assembly on the end plate is the first to contact the coal face, bearing greater cutting resistance and being more prone to wear. The cutting tooth assembly consists of a tooth base, a tooth sleeve, and cutting teeth. The tooth base is mainly fixed to the side of the end plate at a certain angle by welding. If the tooth base welded to the end plate wears severely, it cannot properly withstand the cutting resistance transmitted by the cutting teeth, easily causing the teeth to fall off; if the cutting resistance borne by the tooth base exceeds the weld's bearing capacity, the tooth base is also prone to falling off. If the end plate tooth holder fails, it will significantly reduce the cutting efficiency of the drum and accelerate the reduction of drum life. Furthermore, underground welding work poses significant safety hazards due to factors such as gas. Therefore, it is necessary to shut down operations and bring the end plate tooth holder to the surface for welding repairs. This not only disrupts mining operations and causes economic losses, but also creates safety hazards at the mining face due to prolonged downtime. In conclusion, the end plate connection structure needs to be improved to allow for underground replacement, significantly reducing downtime. Summary of the Invention

[0003] The purpose of this invention is to provide a detachable end plate coal mining machine drum to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides a detachable end plate coal mining machine drum, comprising a drum ring, an end plate connecting sleeve, and an end plate body. Blades are installed on the outer side of the drum ring, and a connecting plate is welded to the inner side of the drum ring. An end cover is fastened to the connecting plate by screws. The end plate connecting sleeve is welded to the outer side of the drum ring, and the end plate body is detachably mounted on the end plate connecting sleeve.

[0005] Optionally, the four corners of the end plate connecting sleeve are rounded, and there are several threaded holes on the plate. An inner hole is opened at the center of the plate, and the inner hole is fitted with the outer side of the cylindrical ring. The end plate connecting sleeve is connected to the end plate body through the threaded holes.

[0006] Optionally, a square hole is provided in the center of the end plate body, the four corners of the square hole are rounded, and there are round holes and several threaded holes inside the square hole. The round holes are configured to fit with the outer side of the cylindrical ring. The end plate body is connected to the end plate connecting sleeve through the square hole. A tooth seat is welded to the outer edge of the end plate body for installing the cutting tooth assembly.

[0007] Optionally, the end plate body is also provided with a number of end plate water passage holes.

[0008] Optionally, a loading blade is welded to the side of the blade.

[0009] Optionally, the blades can be loaded with the same lead as the blades.

[0010] The technical effects of this invention are as follows:

[0011] The detachable coal mining machine drum provided by this invention only requires welding the end plate connecting sleeve to the drum ring, and the end plate body is fastened to the connecting sleeve by bolts, thereby realizing the detachability of the end plate. When the tooth seat is enlarged, excessively worn, falls off, or the end plate is severely worn, causing the drum to malfunction, the drum can be repaired by directly replacing the end plate body with the welded tooth seat. This avoids the safety hazards caused by welding and repairing the drum underground and reduces the economic losses caused to coal mining enterprises by the shutdown when going up to the surface. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the detachable end plate coal mining machine drum in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the end plate connecting sleeve in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the end plate body in an embodiment of the present invention.

[0017] Labeling Explanation: 1. Inner hole; 2. Threaded hole; 3. Rounded corner; 4. Chamfer; 5. Flat surface; 6. Water passage hole for end plate; 7. Countersunk hole; 8. Rounded corner; 9. Square hole; 10. End cap; 20. End plate body; 30. End plate connecting sleeve; 40. Loading blade; 50. Blade; 60. Tail blade; 70. Cylindrical ring; 80. Connecting plate; 90. Cutting tooth assembly. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] To facilitate understanding of the present invention, a more comprehensive description of the invention will be given below with reference to the accompanying drawings, and several embodiments of the invention will be provided. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] The terms “include,” “including,” “have,” “contain,” etc., used in this article are all open-ended terms, meaning that they include but are not limited to.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figures 1-3As shown, this embodiment provides a detachable end-plate coal mining machine drum, including a drum ring 70, an end-plate connecting sleeve 30, and an end-plate body 20. Blades 50 are installed on the outer side of the drum ring 70, and a connecting plate 80 is welded to the inner side of the drum ring 70. The end cover 10 is fastened to the connecting plate 80 by screws. The end-plate connecting sleeve 30 is welded to the outer side of the drum ring 70, and the end-plate body 20 is detachably installed on the end-plate connecting sleeve 30.

[0025] Using the end plate of this embodiment, only the end plate connecting sleeve 30 needs to be welded to the drum ring 70, and the end plate body 20 is fastened to the connecting sleeve by bolts, thereby realizing the detachability of the end plate. When the tooth seat is enlarged, excessively worn, falls off, or the end plate is severely worn, causing the drum to be unable to work normally, the drum can be repaired by directly replacing the end plate body 20 with the welded tooth seat. This avoids the safety hazards caused by welding and repairing the drum underground and reduces the economic losses caused to the coal mining enterprise by the shutdown when going up to the surface.

[0026] The detachable end plate coal mining machine drum provided in this embodiment has a specific structure including an end cover 10, an end plate body 20, an end plate connecting sleeve 30, a loading blade 40, a blade 50, a tail blade 60, a drum ring 70, a connecting plate 80, and a cutting tooth assembly 90.

[0027] Blade 50 and tail blade 60 are evenly distributed on the side of drum ring 70 by welding. The space formed by the drum ring 70 and the blade 50 is used to load the coal flow onto the scraper conveyor during operation. The lead of loading blade 40 is the same as that of blade 50, and it is attached to the side of blade 50 by welding, increasing the coal holding space of the drum and improving the loading efficiency of the drum. Connecting disc 80 is welded to the inside of drum ring 70 and connected to the planetary mechanism of the coal mining machine to transmit torque.

[0028] The end cap 10 is fastened to the connecting plate 80 with screws to prevent impurities such as coal dust from entering the inside of the drum.

[0029] To achieve detachable end plate, the end plate structure in this embodiment differs from that of a conventional roller. The end plate structure in this embodiment consists of two parts: an end plate connecting sleeve 30 and an end plate body 20. The end plate connecting sleeve 30 is welded to the roller ring 70, and the end plate body 20 is fastened to the end plate connecting sleeve 30 by screws. This fastening method makes the end plate body 20 easy to disassemble, thus achieving detachability.

[0030] like Figure 2 The end plate connecting sleeve 30 shown has an inner hole 1 that fits with the outer side of the cylindrical ring 70 and is fixed by welding. The rounded corner 3 reduces stress concentration at this point, and the chamfer 4 facilitates installation. It is inserted into the square hole 9 of the end plate body 20 and fastened to the end plate body 20 through the threaded hole 2. The main torque is transmitted to the end plate body 20 through the side of the end plate connecting sleeve 30.

[0031] like Figure 3 The end plate 20 shown has a flat surface 5 cut out at a specific angle on its side for welding toothed seats. The water supply required for the toothed seat spray is provided through the water passage 6 of the end plate. The end plate 20 is connected to the end plate connecting sleeve 30 through the square hole 9. The end plate 20 has a total of 16 through holes and countersunk holes 7. It is fastened to the end plate connecting sleeve 30 with screws. The four corners of the square hole 9 are machined with rounded corners 8 to reduce stress concentration. The round hole of the end plate 20 is fitted with the outer side of the cylindrical ring 70.

[0032] It is feasible that the mating square hole 9 between the end plate body 20 and the end plate connecting sleeve 30 can be designed as a polygon according to the cylinder size;

[0033] It is feasible that the number of fastening screw holes between the end plate body 20 and the end plate connecting sleeve 30 is not limited to 16, and can be changed according to design needs.

[0034] In summary, this embodiment features an innovative design for the end plate structure of the coal mining machine drum. The end plate consists of two parts: an end plate connecting sleeve 30 and an end plate body 20. To enable the end plate to be detachable, the end plate connecting sleeve 30 is welded to the drum ring 70, and the end plate body 20 is fastened to the end plate connecting sleeve 30 with screws. When the gear seat and end plate are severely worn, maintenance can be completed simply by replacing the screw-connected end plate body 20, avoiding the safety hazards caused by welding maintenance of the drum underground and reducing the economic losses to coal mining enterprises caused by shutdowns upon surfacing.

[0035] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coal mining machine drum with a detachable end plate, characterized in that, The device includes a cylindrical ring (70), an end plate connecting sleeve (30), and an end plate body (20). A blade (50) is installed on the outer side of the cylindrical ring (70), and a connecting plate (80) is welded to the inner side of the cylindrical ring (70). An end cap (10) is fastened to the connecting plate (80) by screws. The end plate connecting sleeve (30) is welded to the outer side of the cylindrical ring (70), and the end plate body (20) is detachably installed on the end plate connecting sleeve (30).

2. The detachable end-plate coal mining machine drum according to claim 1, characterized in that, The four corners of the end plate connecting sleeve (30) are rounded (3), and there are several threaded holes (2) on the plate. An inner hole (1) is opened in the center of the plate. The inner hole (1) is fitted with the outer side of the cylindrical ring (70). The end plate connecting sleeve (30) is connected to the end plate body (20) through the threaded holes (2).

3. A detachable end-plate coal mining machine drum according to claim 1, characterized in that, A square hole (9) is provided in the center of the end plate body (20). The four corners of the square hole (9) are rounded (8). The inside of the square hole (9) has a round hole and several threaded holes. The round hole is fitted to the outside of the cylindrical ring (70). The end plate body (20) is connected to the end plate connecting sleeve (30) through the square hole (9). A tooth seat is welded to the outer edge of the end plate body (20) for installing the cutting tooth assembly (90).

4. A detachable end-plate coal mining machine drum according to claim 3, characterized in that, The end plate body (20) is also provided with several end plate water passage holes (6).

5. A detachable end-plate coal mining machine drum according to claim 1, characterized in that, The side of the blade (50) is welded with a loading blade (40).

6. A detachable end-plate coal mining machine drum according to claim 5, characterized in that, The lead of the loaded blade (40) is the same as that of the blade (50).

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