A coal collecting and processing device for underground coal mining

Abstract

This invention provides a coal collection and processing device for underground coal mining, belonging to the field of coal mining technology. It includes a supporting chassis, a traveling unit mounted on the chassis, a pump station installed on the chassis, a rocker arm mounted at the front of the chassis, a roller cutting section at the front end of the rocker arm, a bucket mounted at the front end of the chassis and below the rocker arm, and a chute scraper conveying section mounted on the chassis and bucket. An auxiliary bucket is located above the bucket. This invention, by placing an auxiliary bucket above the main bucket, can act as a separator when scooping thick coal seams, preventing all coal from concentrating on the bucket and relieving the pressure of loading and conveying. Through the material transfer component and crushing component installed in the auxiliary bucket, not only can the coal in the auxiliary bucket be conveyed, but large coal blocks can also be cut and crushed, thereby preventing large coal blocks from clogging the loading section and the chute scraper conveying section, ensuring effective coal collection.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to a coal collection and processing device used in underground coal mining. Background Technology

[0002] Continuous coal mining machines are high-efficiency mining equipment used in underground coal mining. Their core technology is to break and cut coal by rotating the cutting teeth and using impact and shearing action on the coal and rock. The shovel located below the cutting mechanism, together with the loader and scraper conveyor, quickly collects the coal and transports it to the transfer mechanism, eliminating the intermittent coal dropping process of traditional coal mining machines, thereby greatly improving mining efficiency.

[0003] The movement of the machine body drives the bucket to move, shoveling the coal in front to the top of the bucket. Since the coal that falls after being broken by the drum cutting section accumulates together, when the bucket scoops up the pile of coal, the coal will also be scooped onto the bucket at the same time. Because the bucket scoops up too much coal at a time, it will not only affect the loading efficiency of the loading section, but also the excessive accumulation of coal on the chute scraper conveyor section will easily spill onto the body of the coal mining machine. At the same time, since some coal blocks are large in size, directly scooping them up can easily block the front of the loading section and the chute scraper conveyor section, thereby affecting the loading and transfer effect. Therefore, this application provides a coal collection and processing device for underground coal mining to meet the needs. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide a coal collection and processing device for underground coal mining. By setting an auxiliary bucket above the main bucket, it can act as a separator when shoveling thick coal seams, preventing all coal from concentrating on the main bucket and relieving the pressure of loading and conveying. Through the material transfer component and crushing component set in the auxiliary bucket, not only can the coal on the auxiliary bucket be conveyed, but large coal blocks can also be cut and crushed, thereby preventing large coal blocks from clogging the loading section and the chute scraper conveyor section, ensuring the effectiveness of coal collection. The above settings can solve the problem of excessive coal accumulation and large coal blocks in the loading section and chute scraper conveyor section when shoveling thick coal seams, which affects loading efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A coal collection and processing device for underground coal mining includes a supporting chassis with a traveling section and a pump station mounted on it. A rocker arm is mounted at the front of the chassis, with a roller cutting section at its front end. A bucket is mounted at the front of the chassis and below the rocker arm, with a loading section rotatably connected to the top of the bucket. A chute scraper conveying section is provided on the chassis and bucket. An auxiliary bucket is positioned above the bucket, with a coal-feeding opening inside. An angle adjustment mechanism is used to adjust the inclination of the auxiliary bucket and is connected to both the bucket and auxiliary bucket. A material transfer assembly is used to transfer coal from the auxiliary bucket and to grind stuck coal; the material transfer assembly is connected to the auxiliary bucket. A crushing assembly is used to cut and crush the coal from the auxiliary bucket and is connected to the auxiliary bucket.

[0007] Optionally, the crushing assembly includes a rotating cylinder rotatably connected between the two side walls of the auxiliary bucket, a second motor fixedly connected to the outside of the auxiliary bucket, the output end of the second motor being fixedly connected to the central axis of the rotating cylinder, and a plurality of mounting seats equidistantly slidably connected inside the rotating cylinder, each mounting seat having a cutter installed inside.

[0008] Optionally, multiple sets of cutting tools are arranged around the rotating cylinder, the ends of the cutting tools are provided with bent portions, and the orientations of adjacent cutting tools are opposite.

[0009] Optionally, a stopper rod is slidably connected inside the rotating cylinder, and an embedded groove is symmetrically opened inside the stopper rod. A connecting plate is equidistantly rotatably connected inside the embedded groove. One end of the connecting plate is rotatably connected to one side of the mounting base. A rotary joint is fixedly connected to one end of the stopper rod. A second hydraulic push rod is fixedly connected to the outside of the auxiliary bucket along the axis of the rotating cylinder. One end of the second hydraulic push rod extends into the rotating cylinder and is fixedly connected to the side of the rotary joint away from the stopper rod.

[0010] Optionally, a plugging protrusion is fixedly connected to one side of the inner wall of the rotating cylinder, and a plugging groove is provided inside the plug rod, with one end of the plugging protrusion inserted into the plugging groove.

[0011] Optionally, the material conveying assembly includes a roller rotatably connected between the two sides of the inner wall of the auxiliary bucket, and the roller is disposed inside the coal falling opening, with crushing teeth disposed on the outside of the roller.

[0012] Optionally, one end of the roller passes through the secondary bucket and is fixedly connected to a worm gear, a third motor is fixedly connected to the outside of the secondary bucket, a worm is fixedly connected to the output end of the third motor, and the worm gear and the worm are meshed together.

[0013] Optionally, the angle adjustment mechanism includes an adjustment arm symmetrically rotatably connected to one side of the auxiliary bucket, a constraint groove symmetrically opened inside the bucket, a horizontal shaft slidably connected inside the constraint groove, one end of the horizontal shaft being rotatably connected to the adjustment arm, and a first hydraulic push rod symmetrically rotatably connected to the bottom of the bucket, with the telescopic end of the first hydraulic push rod being rotatably connected to the end of the horizontal shaft away from the adjustment arm.

[0014] Optionally, a connecting arm is symmetrically rotatably connected to the side of the auxiliary bucket away from the adjusting arm, and the end of the connecting arm away from the auxiliary bucket is rotatably connected to the outer wall of the bucket.

[0015] Optionally, a first motor is fixedly connected to the bottom of the bucket, and the output end of the first motor is fixedly connected to the central axis of the loading part.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above-mentioned scheme, the coal collection and processing device used in underground coal mining provided in this application, by setting an auxiliary bucket above the bucket, can play a separating role when shoveling thick coal seams, avoiding all coal from concentrating on the bucket, and relieving the pressure of loading and conveying. Through the material transfer component set in the auxiliary bucket in conjunction with the crushing component, not only can the coal on the auxiliary bucket be conveyed, but also large coal blocks can be cut and crushed, thereby avoiding large coal blocks from clogging the loading section and the chute scraper conveying section, and ensuring the effect of coal collection.

[0018] The coal drop opening on the auxiliary bucket allows the coal at the top to fall onto the bucket, and both rollers are equipped with crushing teeth on the outside. When the rollers rotate, they can crush any stuck coal, ensuring the effective discharge of coal from the top of the auxiliary bucket.

[0019] The second hydraulic push rod drives the piston rod to move, which can work with the connecting plate to drive the mounting base and the cutter to extend and retract. This not only controls the size of the crushed coal, but also adjusts the cutting depth of the cutter for coals of different densities, ensuring the crushing effect on the coal blocks while avoiding damage to the cutter due to excessive cutting resistance.

[0020] The angle adjustment mechanism allows for adjustment of the secondary bucket's angle. When large coal blocks are stuck at the end of the secondary bucket, the angle can be adjusted to ensure that the large coal blocks are pushed smoothly to the top of the secondary bucket, preventing blockage from affecting the bucket's coal collection efficiency. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1A three-dimensional schematic diagram of a coal collection and processing device used in underground coal mines;

[0023] Figure 2 This is a schematic diagram showing the connection between the bucket and the auxiliary bucket;

[0024] Figure 3 This is a schematic diagram showing the view from the back of the bucket.

[0025] Figure 4 This is a structural diagram of the secondary bucket;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 This is a schematic diagram showing the mounting base and the cutting tool on the rotating cylinder.

[0028] Figure 7 This is a schematic diagram of the internal structure of the rotating cylinder;

[0029] Figure 8 This is a schematic diagram of the crushing component.

[0030] Figure 9 for Figure 7 Enlarged diagram of point B in the middle.

[0031] Figure label:

[0032] 1. Traveling unit; 2. Pump station; 3. Rocker arm; 4. Drum cutting unit; 5. Bucket; 6. Chute scraper conveyor unit; 7. Loading unit; 8. First motor; 9. Secondary bucket; 10. Coal drop opening; 11. Connecting arm; 12. Adjusting arm; 13. Constraint groove; 14. Horizontal shaft; 15. First hydraulic push rod; 16. Rotating cylinder; 161. Insertion protrusion; 17. Second motor; 18. Mounting base; 19. Cutting tool; 20. Plug rod; 21. Embedded groove; 22. Connecting plate; 23. Rotary joint; 24. Second hydraulic push rod; 25. Insertion groove; 26. Roller; 27. Worm gear; 28. Third motor; 29. ​​Worm.

[0033] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0034] The coal collection and processing device for underground coal mining provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0035] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0036] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0037] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0038] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0039] like Figures 1 to 4As shown, an embodiment of the present invention provides a coal collection and processing device for underground coal mining, including a supporting chassis. A traveling unit 1 is mounted on the supporting chassis, with the traveling unit 1 located on both sides of the supporting chassis for driving a coal mining machine. A pump station 2 is installed on the supporting chassis, providing power for the operation of various components of the coal mining machine. A rocker arm 3 is mounted at the front of the supporting chassis, with a drum cutting section 4 at its front end. Power distribution from the pump station 2 can drive the rocker arm 3 to swing, thereby adjusting the coal mining position of the drum cutting section 4. A bucket 5 is mounted at the front of the supporting chassis and below the rocker arm 3. A loading section 7 is rotatably connected to the top of the bucket 5, and a first motor 8 is fixedly connected to the bottom of the bucket 5. The output end of the first motor 8 is fixedly connected to the central axis of the loading section 7. A chute scraper conveying section 6 is provided on the supporting chassis and the bucket 5. Two sets of loading sections 7 and first motors 8 are provided, and the two first motors 8 drive the loading section 7 to rotate centripetally, thereby loading the coal collected on the bucket 5 onto the chute scraper. The coal is conveyed from the plate conveyor 6 to the chute scraper conveyor 6 and then to the transfer car. A secondary bucket 9 is located above the bucket 5, with a coal drop opening 10 inside. The secondary bucket 9 acts as a separator when scooping thick coal seams, preventing all coal from concentrating on the bucket 5 and relieving loading and conveying pressure. An angle adjustment mechanism is connected to the bucket 5 and the secondary bucket 9 to adjust the angle of the secondary bucket 9. When large coal blocks are blocked at the end of the secondary bucket 9, the angle is adjusted to allow them to be smoothly pushed to the top of the secondary bucket 9. A material transfer assembly is connected to the secondary bucket 9 to transfer coal on the secondary bucket 9 and to grind stuck coal. A crushing assembly is connected to the secondary bucket 9 to cut and crush the coal on the secondary bucket 9. It can also cut and crush large coal blocks, preventing large coal from blocking the loading section 7 and the chute scraper conveyor 6, ensuring effective coal collection.

[0040] In this embodiment, as Figures 4 to 9As shown, the crushing assembly includes a rotating cylinder 16 rotatably connected between the two side walls of the auxiliary bucket 9. A second motor 17 is fixedly connected to the outside of the auxiliary bucket 9. The output end of the second motor 17 is fixedly connected to the central axis of the rotating cylinder 16. Multiple mounting seats 18 are equidistantly slidably connected inside the rotating cylinder 16. Each mounting seat 18 has a cutter 19 installed inside it. Multiple sets of cutters 19 are arranged around the rotating cylinder 16. The ends of the cutters 19 are provided with bent portions, and adjacent cutters 19 face opposite directions. The second motor 17 is connected to the pump station 2 via an oil pipe. The second motor 17 can drive the rotating drum 16 to rotate, thereby enabling it to cut and crush the coal blocks in conjunction with the cutter 19. Since multiple sets of cutters 19 are arranged in opposite directions at intervals, the crushing area of ​​the coal blocks can be increased during rotation, thus improving the crushing efficiency. A stopper rod 20 is slidably connected inside the rotating drum 16, and an insertion protrusion 161 is fixedly connected to one side of the inner wall of the rotating drum 16. An insertion groove 25 is provided inside the stopper rod 20, and one end of the insertion protrusion 161 is inserted into the insertion groove 25. The insertion groove 25 and the insertion protrusion 161 are connected through a mechanism... The mechanism can constrain the movement of the stopper rod 20, improving its stability. The stopper rod 20 has symmetrically arranged inner grooves 21, with connecting plates 22 rotatably connected at equal intervals inside each groove. One end of the connecting plate 22 is rotatably connected to one side of the mounting base 18. One end of the stopper rod 20 is fixedly connected to a rotary joint 23. A second hydraulic push rod 24 is fixedly connected to the outside of the auxiliary bucket 9 along the axis of the rotating cylinder 16. One end of the second hydraulic push rod 24 extends into the rotating cylinder 16 and is fixedly connected to the side of the rotary joint 23 away from the stopper rod 20. Through the... The second hydraulic push rod 24 drives the stopper rod 20 to move, which can work with the connecting plate 22 to drive the mounting base 18 and the cutter 19 to extend and retract, thereby controlling the cutting depth of the cutter 19. While ensuring the crushing effect on the coal block, it avoids damage to the cutter 19 due to excessive cutting resistance. Through the rotary joint 23 set between the stopper rod 20 and the second hydraulic push rod 24, the second hydraulic push rod 24 can be kept fixed when the rotating cylinder 16 rotates, realizing independent movement of the two and ensuring the stability of the installation of the second hydraulic push rod 24 without affecting the rotation of the cutter 19.

[0041] In this embodiment, as Figure 4 and Figure 5As shown, the material conveying assembly includes rollers 26 rotatably connected between the two sides of the inner wall of the auxiliary bucket 9, and the rollers 26 are located inside the coal drop opening 10. Crushing teeth are provided on the outside of the rollers 26. One end of the rollers 26 passes through the auxiliary bucket 9 and is fixedly connected to a worm gear 27. A third motor 28 is fixedly connected to the outside of the auxiliary bucket 9. A worm 29 is fixedly connected to the output end of the third motor 28. The worm gear 27 is meshed with the worm 29. There are two rollers 26. The third motor 28 drives the worm 29 and the worm gear 27 to rotate, so that the two rollers 26 can rotate synchronously. When the rollers 26 rotate, they can not only transport large coal blocks towards the rotating drum 16, but also, in conjunction with the crushing teeth on their outside, process the coal stuck in the coal drop opening 10, preventing the coal from getting stuck inside the coal drop opening 10 and affecting the coal dropping.

[0042] In this embodiment, as Figure 2 and Figure 3 As shown, the angle adjustment mechanism includes an adjusting arm 12 symmetrically rotatably connected to one side of the auxiliary bucket 9. A constraint groove 13 is symmetrically provided inside the bucket 5, and a horizontal shaft 14 is slidably connected inside the constraint groove 13. One end of the horizontal shaft 14 is rotatably connected to the adjusting arm 12. A first hydraulic push rod 15 is symmetrically rotatably connected to the bottom of the bucket 5, and the telescopic end of the first hydraulic push rod 15 is rotatably connected to the end of the horizontal shaft 14 away from the adjusting arm 12. A connecting arm 11 is symmetrically rotatably connected to the outside of the auxiliary bucket 9 on the side away from the adjusting arm 12. The end of the connecting arm 11 away from the auxiliary bucket 9 is connected to the bucket 5. The outer wall of bucket 5 is rotatably connected. When the horizontal shaft 14 is slid by the first hydraulic push rod 15, it can cooperate with the adjusting arm 12 to drive the auxiliary bucket 9 to rotate, thereby changing the angle between the auxiliary bucket 9 and the bucket 5. When a large coal block is stuck at the end of the auxiliary bucket 9, by increasing the angle of the auxiliary bucket 9, its end can be brought closer to the bucket 5, so that the coal block can be pushed onto the auxiliary bucket 9 more smoothly. At the same time, if the coal remaining on the auxiliary bucket 9 cannot get close to the coal drop opening 10, the angle of the auxiliary bucket 9 can be reversed to allow the coal to slide into the coal drop opening 10, so as to avoid coal residue.

[0043] Working principle of the invention:

[0044] First, the traveling parts 1 on both sides of the chassis move the entire device to the working position. After starting the device, the pump station 2 distributes power to drive the rocker arm 3 to swing, thereby adjusting the position of the front roller cutting part 4 so that it is aligned with the coal seam to be mined for cutting operations. The cut coal falls in front of the bucket 5. As the equipment moves, the falling coal is pushed onto the bucket 5. At this time, the two sets of first motors 8 at the bottom of the bucket 5 start, driving the loading part 7 at the top to rotate centripetally, thereby pushing the coal onto the chute scraper conveyor 6. The chute scraper conveyor 6 then transports the coal to the transfer car to complete the collection. When the coal seam scooped by the bucket 5 is relatively thick, the auxiliary bucket 9 above the bucket 5 separates the coal seam. Since the auxiliary bucket 9 is equipped with a coal dropping opening 10, the coal pushed onto the auxiliary bucket 9 falls onto the bucket 5 through the coal dropping opening 10, which can prevent coal from concentrating on the bucket 5 at the same time, thereby relieving the pressure during loading and conveying. When a large coal block blocks the end of the auxiliary bucket 9, the angle adjustment mechanism is activated. At this time, the first hydraulic push rod 15 extends and retracts, driving the horizontal shaft 14 to slide in the constraint groove 13 of the bucket 5. Through the adjustment arm 12 and the connecting arm 11, the auxiliary bucket 9 is rotated, thereby increasing the angle of the auxiliary bucket 9 so that it faces the bucket 5. Bucket 5 is positioned close to facilitate the pushing of coal blocks onto bucket 9. If there is coal residue on bucket 9, its angle can be adjusted in the opposite direction to encourage coal to slide down into the coal drop opening 10 and onto bucket 5. During shoveling, the third motor 28 drives the worm gear 29 to rotate, which, through the worm wheel 27, enables the two rollers 26 inside the coal drop opening 10 to rotate synchronously. The crushing teeth on the outside of the rollers 26 can both transport large coal blocks towards the rotating drum 16 and handle coal stuck in the coal drop opening 10 to prevent blockage. Due to the different porosities of coal, different methods are used to address the different types of coal. When crushing coal of a certain density, the second hydraulic push rod 24 drives the stopper rod 20 to slide inside the rotating drum 16. When the stopper rod 20 moves, it drives the connecting plate 22 to swing. At this time, the connecting plate 22 can drive the mounting base 18 to move laterally, thereby adjusting the extension length of the cutter 19 and the cutting depth of the cutter 19. The second motor 17 drives the rotating drum 16 to rotate, which in turn drives the cutter 19 to rotate, thereby crushing large coal blocks on one side. The crushed coal falls onto the bucket 5 through the coal drop opening 10 for subsequent collection.

[0045] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A coal collection and processing device used in underground coal mining, characterized in that, The device includes a support chassis, a traveling unit on the support chassis, a pump station mounted on the support chassis, a rocker arm mounted at the front of the support chassis, a roller cutting section at the front end of the rocker arm, a bucket mounted at the front end of the support chassis and below the rocker arm, a loading section rotatably connected to the top of the bucket, a chute scraper conveying section on the support chassis and the bucket, and an auxiliary bucket above the bucket with a coal dropping opening inside the auxiliary bucket. An angle adjustment mechanism is used to adjust the tilt of the auxiliary bucket, and the angle adjustment mechanism is connected to the bucket and the auxiliary bucket; A material transfer assembly is used to transfer coal on the auxiliary bucket and to grind stuck coal. The material transfer assembly is connected to the auxiliary bucket. A crushing assembly, which is used to cut and crush the coal on the auxiliary bucket, and is connected to the auxiliary bucket; The crushing assembly includes a rotating cylinder rotatably connected between the two side walls of the auxiliary bucket. A second motor is fixedly connected to the outside of the auxiliary bucket. The output end of the second motor is fixedly connected to the central axis of the rotating cylinder. Multiple mounting seats are equidistantly slidably connected inside the rotating cylinder. Each mounting seat is equipped with a cutter. A stopper rod is slidably connected inside the rotating cylinder. The stopper rod has symmetrically arranged inner grooves. A connecting plate is rotatably connected to the inner groove at equal intervals. One end of the connecting plate is rotatably connected to one side of the mounting base. A rotary joint is fixedly connected to one end of the stopper rod. A second hydraulic push rod is fixedly connected to the outside of the auxiliary bucket along the axis of the rotating cylinder. One end of the second hydraulic push rod extends into the rotating cylinder and is fixedly connected to the side of the rotary joint away from the stopper rod.

2. The coal collection and processing device used in underground coal mining according to claim 1, characterized in that, Multiple sets of cutting tools are arranged around the rotating cylinder, and each cutting tool has a bent end, with adjacent cutting tools facing opposite directions.

3. The coal collection and processing device used in underground coal mining according to claim 1, characterized in that, A plug-in protrusion is fixedly connected to one side of the inner wall of the rotating cylinder, and a plug groove is opened inside the plug rod, with one end of the plug protrusion inserted into the plug groove.

4. The coal collection and processing device used in underground coal mining according to claim 1, characterized in that, The material conveying assembly includes a roller rotatably connected between the two sides of the inner wall of the auxiliary bucket, and the roller is located inside the coal falling opening. Crushing teeth are provided on the outside of the roller.

5. The coal collection and processing device used in underground coal mining according to claim 4, characterized in that, One end of the roller passes through the secondary bucket and is fixedly connected to a worm gear. A third motor is fixedly connected to the outside of the secondary bucket. A worm is fixedly connected to the output end of the third motor. The worm gear and the worm are meshed together.

6. The coal collection and processing device used in underground coal mining according to claim 1, characterized in that, The angle adjustment mechanism includes an adjustment arm symmetrically rotatably connected to one side of the auxiliary bucket. The bucket has symmetrically opened constraint grooves inside, and a horizontal shaft is slidably connected inside the constraint grooves. One end of the horizontal shaft is rotatably connected to the adjustment arm. A first hydraulic push rod is symmetrically rotatably connected to the bottom of the bucket, and the telescopic end of the first hydraulic push rod is rotatably connected to the end of the horizontal shaft away from the adjustment arm.

7. The coal collection and processing device used in underground coal mining according to claim 6, characterized in that, A connecting arm is symmetrically and rotatably connected to the side of the auxiliary bucket away from the adjusting arm, and the end of the connecting arm away from the auxiliary bucket is rotatably connected to the outer wall of the bucket.

8. The coal collection and processing device used in underground coal mining according to claim 1, characterized in that, The bottom of the bucket is fixedly connected to a first motor, and the output end of the first motor is fixedly connected to the central axis of the loading part.

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