Shovel plate of coal mine heading machine

Abstract

The invention relates to the technical field of coal mining, and discloses a coal mine heading machine shovel plate which comprises a shovel plate body, two star wheels and rotating motors corresponding to the star wheels in number, the rotating motors are fixedly installed in the shovel plate body, the top output ends of the rotating motors penetrate through the top wall of the shovel plate body and then are fixedly connected to the middles of the star wheels, and material collecting plates are movably connected to the two sides of the shovel plate body. Two fixing boxes are symmetrically and fixedly connected to the outer wall of the material collecting plate, a supporting roller is arranged between the fixing boxes, a plurality of claw blocks are fixedly connected to the outer wall of the supporting roller, a shovel plate is matched with the material collecting plate to better cover an operation area, the position of equipment does not need to be frequently adjusted, the operation efficiency is improved, and in addition, the width is increased to improve the stability of the equipment. In conclusion, after the width of the shovel plate of the heading machine is extended, the material receiving range can be obviously enlarged, the working efficiency is improved, the stability of equipment is enhanced, and higher economic benefits are brought to mine enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and more particularly to a shovel plate of a coal mine roadheader. Background Art

[0002] Roadheaders are highly efficient equipment used in coal mines for the development and mining of underground rock tunnels, semi-coal rock and coal tunnel working faces. They are mainly composed of walking, cutting, shoveling and conveying mechanisms. Among them, the shoveling mechanism is one of the main working mechanisms of the roadheader. It is mainly used to collect the materials cut by the cutting mechanism, shovel the materials cut by the cutting mechanism onto the shovel, and use the star wheel on the shovel to push the materials to the middle of the shovel, and use the first conveyor in the middle of the shovel to transport the materials out. The performance of the shovel directly affects the production capacity of the roadheader. At present, the shovel does not move during the shoveling process, and the materials are loaded onto the shovel by squeezing.

[0003] With the widespread application of tunnel boring machines in coal mines, more and more coal mine customers use tunnel boring machines to excavate coal mine tunnels and mine coal. However, the width of the coal mine mining tunnel is larger than the width of the tunnel boring machine shovel, which makes it impossible for the tunnel boring machine shovel to complete the material collection in one go. The tunnel boring machine needs to be moved repeatedly to collect the materials, and continuous operation cannot be achieved, which seriously affects the production efficiency. At present, a part of the structure is usually extended on both sides of the shovel. In this way, by widening the width of the shovel, the material collection efficiency can be improved to a certain extent.

[0004] Since the shovel board material collection relies on the rotation of the star wheel on the shovel board to drive the ore into the chute, and the star wheel cannot collect the material at the widened position of the shovel board, the material at the widened position of the shovel board cannot enter the chute smoothly, and it still cannot solve the problem of low shovel board material collection efficiency of the tunnel boring machine in wider mining tunnels. Summary of the Invention

[0005] The present invention provides a shovel plate for a coal mine roadheader, which solves the technical problem in the related art that the star wheel cannot collect materials at the widened position of the shovel plate, resulting in low material collection efficiency of the roadheader shovel plate.

[0006] The present invention provides a shovel plate for a coal mine roadheader, comprising a shovel plate, two star wheels, and rotating motors corresponding to the number of star wheels. The rotating motors are fixedly installed in the shovel plate, and the top output end of the rotating motor passes through the top wall of the shovel plate and is fixedly connected to the middle of the star wheels. Both sides of the shovel plate are movably connected with a collecting plate, the outer wall of the collecting plate is symmetrically fixedly connected to two fixed boxes, a support roller is provided between the fixed boxes, and the outer wall of the support roller is fixedly connected to multiple claw blocks; An adjusting motor is installed in one fixed box, and a rotating shaft is installed at the output end of the adjusting motor. The side end of the rotating shaft is fixedly connected to one side of the supporting roller. A supporting shaft is provided in the second fixed box, and one end of the supporting shaft is fixedly connected to the other side of the supporting roller. A driving bevel gear is fixedly connected to the supporting shaft, and a driven bevel gear is meshed with the outer wall of the driving bevel gear. A driving gear is fixedly connected to the bottom of the driven bevel gear, and a driven rod is fixedly connected to the middle of the driven bevel gear. Both ends of the driven rod are connected to the inner wall of the second fixed box through bearings. A gathering mechanism is provided in the gathering plate, and the gathering mechanism is connected to the driving gear.

[0007] Preferably, a cylinder is fixedly installed in the shovel plate, and the output end of the cylinder is fixedly connected to the collecting plate.

[0008] Preferably, the inner wall of the shovel plate is symmetrically provided with sliding grooves, and the inner wall of the collecting plate is fixedly connected with two clamping blocks, which are slidably connected to the sliding grooves.

[0009] Preferably, the collecting mechanism includes a driven gear and a synchronous belt arranged inside the collecting plate. A rotating rod is fixedly connected to the middle of the driven gear, the bottom of the rotating rod is connected to the inner bottom surface of the collecting plate through a bearing, and the top of the rotating rod is fixedly connected to the rotating plate. The driven gear and the driving gear are connected through a synchronous belt transmission.

[0010] Preferably, an adjusting rod is eccentrically fixedly connected to the rotating plate, the side of the adjusting rod is movably connected to the slider, oblique rods are hinged on both sides of the slider through ear plates, each oblique rod side is rotatably connected to a movable rod, and the side of the movable rod is fixedly connected to a movable shaft.

[0011] Preferably, the inner wall of the collecting plate is fixedly connected to a support seat, a rotating drum is slidably connected inside the support seat, the top of the movable shaft passes through the support seat and is fixedly connected to the bottom of the rotating drum, a guide rod passes through the slider, and the side of the guide rod is fixedly connected to the inner wall of the collecting plate.

[0012] Preferably, movable grooves are symmetrically opened on the inner wall of the rotating drum, a lifting rod is inserted into the top of the rotating drum, a lifting plate is fixedly connected to the bottom of the lifting rod, the side of the lifting plate is slidably connected to the movable groove, and a reset spring is provided between the bottom of the lifting plate and the bottom surface of the rotating drum.

[0013] Preferably, a cleaning rod is fixedly connected to the top of the lifting rod, the cross section of the cleaning rod is trapezoidal, a rectangular groove is opened on the top of the collecting plate corresponding to the cleaning rod, and a sealing plate is symmetrically hinged on the inner wall of the rectangular groove.

[0014] Preferably, one end of a plurality of torsion springs is fixedly connected to the bottom of the sealing plate, and the other end of the torsion spring is fixedly connected to the inner top surface of the collecting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts the technical means of cooperating with the cylinder and the aggregate plate. The aggregate plate is moved by the cylinder, and the width of the shovel plate is quickly adjusted, making the tunnel boring machine more practical. By adjusting the motor to drive the support roller to rotate, the continuous operation of the support roller can better collect the mineral materials on both sides of the shovel plate. From the perspective of expanding the material collection range, after the width is increased, the shovel plate can collect more mineral materials during each excavation, reduce the number of round trips, and speed up the mineral collection speed. In tunnels or working surfaces with larger widths, the shovel plate and the aggregate plate can better cover the working area, without the need to frequently adjust the equipment position, thereby improving working efficiency. In addition, the increase in width can improve the stability of the equipment, and it is not easy to overturn in complex terrain or heavy-load operations, thereby ensuring working safety. In summary, after the width of the tunnel boring machine shovel plate is extended, the material collection range can be significantly expanded, work efficiency can be improved, equipment stability can be enhanced, and higher economic benefits can be brought to mining enterprises.

[0016] The present invention adopts technical means of cooperating a synchronous belt, a rotating rod, a rotating plate, an adjusting rod, a slider, an inclined rod, a movable rod, a movable shaft, a rotating drum and a cleaning rod, so that the cleaning rod rotates with the rotating drum as the center of the circle to collect the mineral materials dropped on the collecting plate, overcoming the technical deficiency in the prior art that the star wheel on the shovel plate cannot collect the mineral materials at the widened position of the shovel plate, thereby realizing the pushing of the mineral materials by the cleaning rod and cooperating with the star wheel to collect the mineral materials dropped on the shovel plate, completing the material collection at one time. From the perspective of improving work efficiency, expanding the material collection range means that more materials can be processed in a single operation, shortening the overall operation time and accelerating the progress of the project.

[0017] The present invention adopts the technical means of matching a rectangular groove and a cleaning rod, and realizes the lifting and lowering movement of the cleaning rod through a reset spring arranged in the rotating drum. By providing a sealing plate and a torsion spring, the rectangular groove is conveniently sealed, overcoming the shortcomings of the existing technology, thereby making the collection plate and the shovel plate fit more closely and the collection effect of the star wheel better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention when the collecting plate extends out of the shovel plate; Figure 3 It is a schematic diagram of the overall external structure of the aggregate plate of the present invention; Figure 4 It is a schematic diagram of the overall structure of the shovel plate when the collecting plate of the present invention is stored in the shovel plate; Figure 5 It is a schematic diagram of the overall structure of the shovel plate when the collecting plate of the present invention is extended to the outside of the shovel plate; Figure 6 This is a schematic diagram of the overall structure of the support roller of the present invention installed in the fixed box; Figure 7 It is a schematic diagram of the overall structure of the aggregate structure of the present invention; Figure 8 It is a schematic diagram of the entire interior of the drum of the present invention.

[0019] In the figure: 1. Shovel plate; 101. Slide groove; 2. Star wheel; 3. Rotating motor; 4. Collecting plate; 401. Block; 402. Rectangular groove; 5. Fixed box; 6. Support roller; 601. Claw block; 602. Support shaft; 603. Active bevel gear; 7. Adjusting motor; 701. Rotating shaft; 8. Driven bevel gear; 801. Active gear; 802. Driven rod; 9. Collecting mechanism; 90. Driven gear; 91. Synchronous belt; 92. Rotating rod; 93. Rotating plate; 94. Adjusting rod; 95. Slider; 96. Inclined rod; 97. Movable rod; 98. Guide rod; 99. Movable shaft; 910. Support seat; 10. Rotating drum; 11. Movable groove; 12. Lifting rod; 1201. Lifting plate; 13. Cleaning rod; 14. Return spring; 15. Sealing plate; 16. Torsion spring; 17. Cylinder. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1-8 As shown, this embodiment provides a shovel plate for a coal mine roadheader, comprising a shovel plate 1, two star wheels 2, and rotating motors 3 corresponding to the number of star wheels 2. The rotating motors 3 are fixedly installed in the shovel plate 1, and the top output end of the rotating motor 3 passes through the top wall of the shovel plate 1 and is fixedly connected to the middle of the star wheels 2. Both sides of the shovel plate 1 are movably connected with a collecting plate 4, the outer wall of the collecting plate 4 is symmetrically fixedly connected to two fixed boxes 5, a support roller 6 is provided between the fixed boxes 5, and the outer wall of the support roller 6 is fixedly connected to a plurality of claw blocks 601; An adjusting motor 7 is installed in one fixed box 5, and a rotating shaft 701 is installed at the output end of the adjusting motor 7. The side end of the rotating shaft 701 is fixedly connected to one side of the supporting roller 6. A supporting shaft 602 is provided in the second fixed box 5, and one end of the supporting shaft 602 is fixedly connected to the other side of the supporting roller 6. A driving bevel gear 603 is fixedly connected to the supporting shaft 602, and the outer wall of the driving bevel gear 603 is meshed with a driven bevel gear 8. A driving gear 801 is fixedly connected to the bottom of the driven bevel gear 8, and a driven rod 802 is fixedly connected to the middle part of the driven bevel gear 8. Both ends of the driven rod 802 are connected to the inner wall of the second fixed box 5 through bearings. A collecting mechanism 9 is provided in the collecting plate 4, and the collecting mechanism 9 is connected to the driving gear 801.

[0022] A cylinder 17 is fixedly installed in the shovel plate 1, and the output end of the cylinder 17 is fixedly connected to the collecting plate 4.

[0023] The working principle and beneficial effects of the above technical solution are: Working principle: When the present invention is in use, when the width of the mining tunnel of the coal mine is similar to the width of the shovel plate 1, the two collecting plates 4 do not need to be extended, see Figure 1 , the two collecting plates 4 are in a state of being stored in the shovel plate 1, and the corresponding star wheels 2 can be driven to rotate by starting the two rotating motors 3, so that when the shovel plate 1 is working, the ore materials that fall on the shovel plate 1 are collected and driven into the chute, and the collection is completed at one time. At this time, by starting the regulating motor 7, the supporting roller 6 is driven to rotate through the rotating shaft 701, and the ore materials accumulated on both sides of the shovel plate 1 are collected and turned over by the multiple claw blocks 601 arranged on the supporting roller 6, so that they fall onto the shovel plate 1, which is convenient for the star wheel 2 to collect; When the width of the mining tunnel of the coal mine is larger than the width of the shovel plate 1, the rotating motor 3 remains in working condition, and the corresponding collecting plate 4 is pushed to move to the outside of the shovel plate 1 by starting the cylinder 17 until the width of the collecting plate 4 and the shovel plate 1 reach the width of the mining tunnel of the coal mine, and then the cylinder 17 can be stopped. It should be noted that the two cylinders 17 respectively control the movement of the corresponding collecting plates 4, and push one or two collecting plates 4 for use as needed. The support roller 6 also rotates normally to collect the ore, and the width of the shovel plate 1 is adjusted quickly and conveniently, making the shovel plate 1 more practical.

[0024] Beneficial effect: The present invention adopts the technical means of cooperating with the cylinder 17 and the aggregate plate 4. The aggregate plate 4 is moved by the cylinder 17, and the width of the shovel plate 1 is quickly adjusted, making the tunneling machine more practical. By adjusting the motor 7 to drive the support roller 6 to rotate, the continuous operation of the support roller 6 can better collect the mineral materials on both sides of the shovel plate 1. From the perspective of expanding the material collection range, after the width is increased, the shovel plate 1 can collect more mineral materials during each excavation, reduce the number of round trips, and speed up the mineral collection speed. In tunnels or working surfaces with larger widths, the shovel plate 1 can cooperate with the aggregate plate 4 to better cover the working area, without the need to frequently adjust the equipment position, thereby improving working efficiency. In addition, the increase in width can improve the stability of the equipment, and it is not easy to overturn in complex terrain or heavy-load operations, thereby ensuring working safety. In summary, the extension of the width of the tunneling machine shovel plate 1 can significantly expand the material collection range, improve work efficiency, enhance equipment stability, and bring higher economic benefits to mining enterprises.

[0025] In a specific embodiment, the inner wall of the shovel plate 1 is symmetrically provided with sliding grooves 101 , and the inner wall of the collecting plate 4 is fixedly connected with two clamping blocks 401 , which are slidably connected to the sliding grooves 101 .

[0026] It should be noted that the collecting mechanism 9 includes a driven gear 90 and a synchronous belt 91 arranged inside the collecting plate 4. A rotating rod 92 is fixedly connected to the middle of the driven gear 90. The bottom of the rotating rod 92 is connected to the inner bottom surface of the collecting plate 4 through a bearing. A rotating plate 93 is fixedly connected to the top of the rotating rod 92. The driven gear 90 and the driving gear 801 are connected through a synchronous belt 91.

[0027] It should be noted that an adjusting rod 94 is eccentrically fixedly connected to the rotating plate 93, and the side of the adjusting rod 94 is movably connected to the slider 95. The slider 95 has inclined rods 96 hinged on both sides through ear plates. Each inclined rod 96 is rotatably connected to a movable rod 97 on the side, and the side of the movable rod 97 is fixedly connected to a movable shaft 99.

[0028] In addition, a support seat 910 is fixedly connected to the inner wall of the collecting plate 4, and a rotating drum 10 is slidably connected inside the support seat 910. The top of the movable shaft 99 passes through the support seat 910 and is fixedly connected to the bottom of the rotating drum 10. A guide rod 98 passes through the slider 95, and the side of the guide rod 98 is fixedly connected to the inner wall of the collecting plate 4.

[0029] The working principle and beneficial effects of the above technical solution are: Working principle: During use of the present invention, the driven rod 802 rotates through the synchronous belt 91 to drive the rotating rod 92 to rotate, and the rotating rod 92 drives the rotating plate 93 to rotate. The rotation of the rotating plate 93 drives the adjusting rod 94 eccentrically connected at the top to rotate, and the adjusting rod 94 pushes the slider 95 to move. The slider 95 is limited by the guide rod 98, and the slider 95 drives the inclined rod 96 movably connected on both sides to rotate, and the inclined rod 96 drives the movable rod 97 to rotate, and the movable rod 97 drives the movable shaft 99 fixed at the top to rotate, and the movable shaft 99 drives the rotating drum 10 to reciprocate in a semicircular trajectory. The rotating drum 10 drives the cleaning rod 13 to rotate through the lifting rod 12, and the cleaning rod 13 rotates with the rotating drum 10 as the center of the circle, collects the mineral materials fallen on the collecting plate 4, pushes it to the shovel plate 1, and then collects it through the rotation of the star wheel 2, which solves the problem that the star wheel 2 of the current tunneling machine shovel plate 1 cannot collect the mineral materials at the widened position of the shovel plate 1.

[0030] Beneficial effects: The present invention adopts technical means of cooperating with the synchronous belt 91, the rotating rod 92, the rotating plate 93, the adjusting rod 94, the slider 95, the inclined rod 96, the movable rod 97, the movable shaft 99, the rotating drum 10 and the cleaning rod 13, so that the cleaning rod 13 rotates with the rotating drum 10 as the center of the circle, and collects the mineral materials dropped on the collecting plate 4, overcoming the technical deficiency of the prior art that the star wheel 2 on the shovel plate 1 cannot collect the mineral materials at the widened position of the shovel plate 1, thereby realizing the pushing of the mineral materials by the cleaning rod 13, and cooperating with the star wheel 2 to collect the mineral materials dropped on the shovel plate 1, completing the material collection at one time. From the perspective of improving work efficiency, expanding the material collection range means that more materials can be processed in a single operation, shortening the overall operation time, and accelerating the progress of the project.

[0031] In a specific embodiment: a movable groove 11 is symmetrically opened on the inner wall of the rotating drum 10, a lifting rod 12 is inserted into the top of the rotating drum 10, a lifting plate 1201 is fixedly connected to the bottom of the lifting rod 12, and the side of the lifting plate 1201 is slidably connected to the movable groove 11, and a reset spring 14 is provided between the bottom of the lifting plate 1201 and the inner bottom surface of the rotating drum 10.

[0032] It should be noted that a cleaning rod 13 is fixedly connected to the top of the lifting rod 12, and the cross section of the cleaning rod 13 is trapezoidal. A rectangular groove 402 is opened on the top of the collecting plate 4 corresponding to the cleaning rod 13, and a sealing plate 15 is symmetrically hinged on the inner wall of the rectangular groove 402.

[0033] It should be noted that one end of a plurality of torsion springs 16 is fixedly connected to the bottom of the sealing plate 15 , and the other end of the torsion spring 16 is fixedly connected to the inner top surface of the collecting plate 4 .

[0034] The working principle and beneficial effects of the above technical solution are: When the collecting plate 4 is stored in the shovel plate 1, the top surface of the shovel plate 1 gradually presses the cleaning rod 13 to be stored in the rectangular groove 402, saving time and effort. The cleaning rod 13 cooperates with the setting of the rectangular groove 402 to make the height difference between the top of the collecting plate 4 and the shovel plate 1 smaller, which can better collect the mineral material.

[0035] Beneficial effects: The present invention adopts the technical means of matching the rectangular groove 402 and the cleaning rod 13, and realizes the lifting and lowering movement of the cleaning rod 13 by the return spring 14 arranged in the rotating drum 10. By providing a sealing plate 15 and cooperating with the torsion spring 16, the rectangular groove 402 is conveniently sealed, overcoming the shortcomings of the existing technology, thereby making the collection plate 4 and the shovel plate 1 fit more closely, and the collection effect of the star wheel 2 is better.

[0036] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shovel plate for a coal mine roadheader, comprising a shovel plate (1), two star wheels (2), and rotating motors (3) arranged in the same number as the star wheels (2), characterized in that: The rotating motor (3) is fixedly installed in the shovel plate (1), and the top output end of the rotating motor (3) passes through the top wall of the shovel plate (1) and is fixedly connected to the middle of the star wheel (2); Both sides of the shovel plate (1) are movably connected to a collecting plate (4), the outer wall of the collecting plate (4) is symmetrically fixedly connected to two fixed boxes (5), a support roller (6) is provided between the fixed boxes (5), and the outer wall of the support roller (6) is fixedly connected to a plurality of claw blocks (601); The first fixed box (5) is provided with an adjusting motor (7), an output end of the adjusting motor (7) is provided with a rotating shaft (701), a side end of the rotating shaft (701) is fixedly connected to one side of the support roller (6), the second fixed box (5) is provided with a supporting shaft (602), one end of the supporting shaft (602) is fixedly connected to the other side of the support roller (6), a driving cone wheel (603) is fixedly connected to the supporting shaft (602), an outer wall of the driving cone wheel (603) is meshedly connected to a driven cone wheel (8), a bottom of the driven cone wheel (8) is fixedly connected to a driving gear (801), a middle part of the driven cone wheel (8) is fixedly connected to a driven rod (802), both ends of the driven rod (802) are connected to the inner wall of the second fixed box (5) through bearings, a collecting mechanism (9) is provided in the collecting plate (4), and the collecting mechanism (9) is connected to the driving gear (801).

2. The coal mine boring machine blade according to claim 1, characterized in that: A cylinder (17) is fixedly installed in the shovel plate (1), and an output end of the cylinder (17) is fixedly connected to the collecting plate (4).

3. The coal mine boring machine blade according to claim 1, characterized in that: The inner wall of the shovel plate (1) is symmetrically provided with a slide groove (101), and the inner wall of the collecting plate (4) is fixedly connected with two clamping blocks (401), and the clamping blocks (401) are slidably connected to the slide groove (101).

4. The coal mine boring machine blade according to claim 1, characterized in that: The material collecting mechanism (9) comprises a driven gear (90) and a synchronous belt (91) arranged inside the material collecting plate (4); a rotating rod (92) is fixedly connected to the middle of the driven gear (90); the bottom of the rotating rod (92) is connected to the inner bottom surface of the material collecting plate (4) through a bearing; the top of the rotating rod (92) is fixedly connected to a rotating plate (93); the driven gear (90) and the driving gear (801) are connected by transmission via the synchronous belt (91).

5. The coal mine boring machine blade according to claim 4, characterized in that: An adjusting rod (94) is eccentrically fixedly connected to the rotating plate (93), and the side of the adjusting rod (94) is movably connected to the slider (95). The two sides of the slider (95) are hinged with inclined rods (96) through ear plates. The side of each inclined rod (96) is rotatably connected to a movable rod (97), and the side of the movable rod (97) is fixedly connected to a movable shaft (99).

6. The coal mine boring machine blade according to claim 5, characterized in that: The inner wall of the collecting plate (4) is fixedly connected to a support seat (910), and a rotating drum (10) is slidably connected to the inner wall of the supporting seat (910). The top of the movable shaft (99) passes through the supporting seat (910) and is fixedly connected to the bottom of the rotating drum (10). A guide rod (98) passes through the slider (95), and the side of the guide rod (98) is fixedly connected to the inner wall of the collecting plate (4).

7. The coal mine boring machine blade according to claim 6, characterized in that: The inner wall of the rotating drum (10) is symmetrically provided with movable grooves (11), the top of the rotating drum (10) is plugged with a lifting rod (12), the bottom of the lifting rod (12) is fixedly connected to a lifting plate (1201), the side of the lifting plate (1201) is slidably connected to the movable groove (11), and a return spring (14) is provided between the bottom of the lifting plate (1201) and the inner bottom surface of the rotating drum (10).

8. The coal mine boring machine blade according to claim 7, characterized in that: A cleaning rod (13) is fixedly connected to the top of the lifting rod (12), and the cross section of the cleaning rod (13) is arranged in a trapezoidal shape. A rectangular groove (402) is provided on the top of the collecting plate (4) corresponding to the cleaning rod (13), and a sealing plate (15) is symmetrically hinged on the inner wall of the rectangular groove (402).

9. The coal mine boring machine blade according to claim 8, characterized in that: One end of a plurality of torsion springs (16) is fixedly connected to the bottom of the sealing plate (15), and the other end of the torsion spring (16) is fixedly connected to the inner top surface of the collecting plate (4).

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