Ultra-long working face coal mining machine for coal mining

Abstract

The invention relates to the technical field of coal mining equipment, in particular to a coal mining machine with an ultra-long working face for coal mining, which comprises a hollow rotating arm, a cutting drum is arranged on the front side of the left end of the hollow rotating arm, and a spiral cutting plate is welded on the circumferential surface of the cutting drum; the clamping assembly comprises a rotating ring, an arc-shaped pressing plate, a first gear, an annular gear and a rotating part which are arranged in the cutting tooth base, the annular gear is arranged in the receding arc groove and arranged on the peripheral face of the rotating ring in a sleeving mode, and a preset distance is formed between the inner surface of the annular gear and the outer surface of the rotating ring; the rotating component drives the rotating ring to rotate relative to the cutting teeth so that the first gear and the arc-shaped pressing plate can rotate, and the arc-shaped pressing plate can stretch into or stretch out of the rotating ring. According to the ultra-long working face coal mining machine for coal mining, the clamping assembly is arranged so that cutting teeth can be replaced conveniently, and the coal mining stability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of coal mining equipment, and in particular to an ultra-long working face coal mining machine. Background Art

[0002] During coal mining operations, picks are prone to wear and even breakage due to constant and intense friction with the coal seam, necessitating timely replacement to maintain efficient mining. However, current picks and adapters utilize a pin-and-rubber sleeve connection, requiring specialized tools for installation and removal. This cumbersome and labor-intensive process leads to inefficient pick replacement, impacting mining efficiency. Summary of the Invention

[0003] The present application provides a coal mining machine with an extra-long working face for coal mining, which improves the stability of coal mining by arranging a clamping assembly to facilitate the replacement of cutting teeth.

[0004] The ultra-long working face coal mining machine for coal mining in the embodiment of the present application is characterized by comprising:

[0005] A hollow rotating arm, a cutting drum is provided on the front side of the left end of the hollow rotating arm, a spiral cutting plate is welded on the circumferential surface of the cutting drum, notches are equidistantly provided on the spiral cutting plate, a pick seat is provided in each notch, a cutting tooth is inserted into the pick seat, a clamping assembly is provided inside the pick seat, and the clamping assembly is used to clamp on the surface of the cutting tooth;

[0006] In which, the clamping assembly includes a rotating ring, an arc pressure plate, gear 1, an annular gear and a rotating component arranged in the cutting tooth seat, the rotating ring is provided with an avoidance arc groove, the annular gear is arranged in the avoidance arc groove, the annular gear is sleeved on the outer circumference of the rotating ring, and there is a preset distance between the inner surface of the annular gear and the outer surface of the rotating ring, and the annular gear is meshed with the gear 1, the arc pressure plate is arranged on the gear 1, the rotating component is connected to the bottom of the rotating ring, and the rotating component drives the rotating ring to rotate relative to the cutting tooth to rotate gear 1 and the arc pressure plate, so that the arc pressure plate extends into or out of the rotating ring.

[0007] The ultra-long working face coal mining machine of the embodiment of the present application is provided with a clamping assembly to facilitate the replacement of cutting teeth, thereby improving the stability of coal mining.

[0008] In some embodiments, there is a preset distance A between the inner surface of the ring gear and the outer surface of the rotating ring, and 3cm≤A≤7cm,

[0009] There are multiple avoidance arc grooves and multiple gears, and the multiple avoidance arc grooves are arranged at intervals in the circumferential direction of the rotating ring. The multiple avoidance arc grooves and the multiple gears correspond one to one.

[0010] In some embodiments, each group of the cutting tooth seats includes an arch frame welded on the circumferential surface of the cutting drum, the arch frame is inclined, a tubular seat is fixed through the middle of the top of the arch frame, a blocking ring is fixedly installed on the top of the tubular seat, an annular groove is opened on the inner wall of the tubular seat, a separating plate is fixedly installed on the inner wall of the tubular seat, the separating plate is located on the lower side of the annular groove, and a ring is fixedly installed on the top of the separating plate.

[0011] In some embodiments, an array of arc grooves is opened through the upper surface of the separation plate, and the arc grooves are located between the outer wall of the ring and the inner wall of the tubular seat. A limiting ring is fixedly installed on the inner wall of the tubular seat, and the limiting ring is located below the separation plate. An array of holes is opened through the surface of the limiting ring.

[0012] In some embodiments, each group of the cutting teeth includes conical teeth, a connecting column is fixedly installed at the center of the bottom of the conical teeth, an embedded disk is fixedly installed at the bottom end of the connecting column, the embedded disk is inserted into the inside of the ring, and the top of the embedded disk is flush with the top of the ring, the bottom end of the conical teeth is attached to the top of the blocking ring, and the opening of the blocking ring is sealed.

[0013] In some embodiments, the rotating component includes a slider and a rotating adjustment member, the rotating adjustment member includes a turntable fixedly mounted on the bottom of the slider, a sleeve fixedly mounted at the center of the bottom of the turntable, a slide groove integrally formed on both sides of the sleeve, a sliding rod slidably connected in the sleeve, a boss fixedly mounted on the circumferential surface of the top end of the sliding rod, the boss slidably connected to the slide groove, and a tension spring fixedly mounted between the top end of the sliding rod and the bottom of the turntable;

[0014] An adjusting disk is fixedly mounted on the bottom end of the slide rod, and the adjusting disk is located below the limiting ring. An array of plug posts is fixed on the top of the adjusting disk, and the plug posts are inserted into the sockets. The number of the sockets is an integer multiple of the number of the plug posts. A handle is fixedly mounted on the bottom of the adjusting disk.

[0015] In some embodiments, a drive shaft is fixedly installed at the rear end of the cutting drum, and the drive shaft is inserted into the front side of the left end of the hollow rotating arm. A rotating drive member is provided inside the hollow rotating arm, and the rotating drive member is used to drive the drive shaft to rotate. A limiting assembly is provided inside the hollow rotating arm, and the limiting assembly is used to clamp on the surface of the drive shaft.

[0016] Two annular flanges are fixedly mounted on the circumferential surface of the front half of the drive shaft, and two convex strips are fixedly mounted on the circumferential surface of the rear half of the drive shaft;

[0017] A mounting hole is provided on the front side of the left end of the hollow pivot arm, and the diameter of the mounting hole is equal to the diameter of the annular flange. A protective shell is integrally formed on the rear side of the hollow pivot arm, and a refueling window is provided on the top of the hollow pivot arm. A cover plate is fixed to the top of the hollow pivot arm by bolts, and the cover plate is sealed on the refueling window opening.

[0018] In some embodiments, the rotation driving member includes a motor fixedly mounted in a protective shell, a reducer fixedly mounted on an output end of the motor, and a sprocket 1 fixedly mounted on an output end of the reducer;

[0019] An annular sleeve is fixedly installed on the inner wall of the rear side of the left end of the hollow rotating arm, and a connecting ring is rotatably connected in the annular sleeve. The cross section of the connecting ring is L-shaped, and a sprocket 2 is fixedly installed on the front side of the connecting ring. A docking groove is opened through the center of the sprocket 2, and the sprockets 1 and 2 are connected by a chain;

[0020] The driving shaft and the convex strip are inserted into the docking groove.

[0021] In some embodiments, the limiting assembly includes a left clamping seat and a right clamping seat, and the left clamping seat and the right clamping seat are each provided with an arc-shaped surface on opposite sides. The left clamping seat and the right clamping seat are respectively attached to the circumferential surface of the front half of the drive shaft, and the two annular flanges are attached to the front and rear sides of the left clamping seat and the right clamping seat;

[0022] The top and bottom of the left clamping seat are fixedly mounted with a linear rack, and the top and bottom of the right side of the right clamping seat are fixedly mounted with an L-shaped rack. A second gear is engaged between the linear rack and the L-shaped rack, and the second gear is rotatably connected to the inner wall of the hollow rotating arm.

[0023] A hydraulic cylinder is fixedly installed on the right side of the right clamp seat, and two guide rods are fixedly installed on the left side of the left clamp seat. A guide tube is sleeved on the outer side of the left end of the guide rod, and the guide tube is fixedly installed on the inner wall of the left end of the hollow rotating arm.

[0024] In some embodiments, an oil storage tank is fixedly mounted on the inner wall of the hollow rotating arm, a sealing plate is provided on the top of the oil storage tank, the sealing plate is attached to the bottom of the cover plate, a guide pipe is connected to the bottom left side of the oil storage tank, and the other end of the guide pipe is connected to the right side of the right clamp seat;

[0025] A cavity is provided inside the left clamp seat and the right clamp seat, and a through hole is provided on the opposite side of the left clamp seat and the right clamp seat, and the through hole is connected to the cavity. The arc surface of the left clamp seat and the right clamp seat are provided with an array of cylindrical grooves, and rollers are rotatably connected in the cylindrical grooves. Liquid guide holes are provided on the inner wall of the cavity of the left clamp seat and the right clamp seat, and the liquid guide holes correspond to the cylindrical grooves one by one. The cylindrical grooves are connected to the cavity through the liquid guide holes.

[0026] A hollow plate is fixedly installed on the inner wall of each through hole, a cross bar is slidably connected to the center of the hollow plate, a conical sealing plug is fixedly installed on the end of the cross bar close to the through hole opening, a spring is fixedly installed between the conical sealing plug and the hollow plate, an embedded ring is fixedly installed on the inner wall of the through hole opening, the embedded ring is adapted to the circumferential surface of the conical sealing plug, and the conical sealing plug is inserted through the embedded ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of an ultra-long working face coal mining machine for coal mining according to an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of a ring gear and a rotating ring according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of an ultra-long working face coal mining machine for coal mining according to an embodiment of the present invention, with the hollow rotating arm and the cutting drum separated;

[0031] Figure 4 Schematic diagram of the three-dimensional structure of the cutting drum according to an embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the front cross-sectional structure of the pick holder, pick and clamping assembly according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the three-dimensional structure of the clamping assembly and the pick holder in a separated state according to an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of a three-dimensional cross-sectional structure of a pick holder according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of a clamping assembly according to an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the three-dimensional structure of a rotating drive member according to an embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the three-dimensional structure of a limit assembly according to an embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of a three-dimensional cross-sectional structure of a position limiting component according to an embodiment of the present invention;

[0039] Figure 12 for Figure 11 Schematic diagram of the enlarged structure of the details at point A in the middle.

[0040] Hollow rotating arm 100, mounting hole 101, protective shell 102, cover plate 103,

[0041] Cutting drum 200,

[0042] Spiral cutting plate 300, cutting tooth seat 400, arch frame 401, tubular seat 402, blocking ring 403, annular groove 404, separating plate 405, collar 406, arc groove 407, limiting ring 408, socket 409, cutting tooth 500, conical tooth 501, connecting column 502, embedded plate 503, clamping assembly 600, rotating ring 601, avoid arc groove 602, arc pressure plate 603, gear 1 604, ring gear 605, slider 606, turntable 607, sleeve 608, slide 609, slide rod 610, boss 611, tension spring 612, adjusting plate 613, plug column 614, handle 615, drive shaft 700, annular convex Edge 701, ridge 702, rotating drive part 800, motor 801, reducer 802, sprocket one 803, annular sleeve 804, connecting ring 805, sprocket two 806, docking groove 807, chain 808, limit assembly 900, left clamp seat 901, right clamp seat 902, linear rack 903, L-shaped rack 904, gear two 905, hydraulic cylinder 906, guide rod 907, guide tube 908, oil storage tank 909, sealing plate 910, guide tube 911, cavity 912, through hole 913, roller 914, liquid guide hole 915, hollow plate 916, cross bar 917, conical sealing plug 918, spring 919, and embedded ring 920. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application. The terms "mounted", "connected", and "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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two elements. The terms "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0046] The embodiment of the present application provides an ultra-long working face coal mining machine for coal mining, comprising:

[0047] A hollow rotating arm 100 is provided with a cutting drum 200 at the front side of the left end of the hollow rotating arm 100. A spiral cutting plate 300 is welded on the circumferential surface of the cutting drum 200. Notches are equidistantly provided on the spiral cutting plate 300. A pick seat 400 is provided in each notch. A cutting tooth 500 is inserted into the pick seat 400. A clamping assembly 600 is provided inside the pick seat 400. The clamping assembly 600 is used to clamp on the surface of the cutting tooth 500.

[0048] Among them, the clamping assembly 600 includes a rotating ring 601, an arc pressure plate 603, a gear 1 604, a ring gear 605 and a rotating component arranged in the cutting tooth seat 400, the rotating ring 601 is provided with an avoidance arc groove 602, the ring gear 605 is arranged in the avoidance arc groove 602, the ring gear 605 is sleeved on the outer circumference of the rotating ring 601, and there is a preset distance between the inner surface of the ring gear 605 and the outer surface of the rotating ring 601, and the ring gear 605 is meshed with gear 1 604, the arc pressure plate 603 is arranged on gear 1 604, the rotating component is connected to the bottom of the rotating ring 601, and the rotating component drives the rotating ring 601 to rotate relative to the cutting tooth 500 to rotate gear 1 604 and the arc pressure plate 603, so that the arc pressure plate 603 extends into or out of the rotating ring 601.

[0049] A rotating ring 601 is disposed within the pick holder 400. A central array of escape arc slots 602 is formed throughout the rotating ring 601. A curved pressure plate 603 is rotatably connected between the top and bottom walls of each escape arc slot 602, rotating in a clockwise direction. A gear 1 604 is fixedly mounted in the central portion of the front end of the curved pressure plate 603. A ring gear 605 is embedded within the pick holder 400, and gear 1 604 engages with the ring gear 605. Consequently, when the rotating ring 601 rotates within the tubular holder 402, gear 1 604 rolls on the ring gear 605, causing the curved pressure plates 603 to deflect relative to the rotating ring 601. As the curved pressure plates 603 deflect to the upper side of the embedded disk 503, the embedded disk 503 is clamped by the curved pressure plates 603 and the separator disk 405, preventing the cutting teeth 500 from disengaging from the tubular holder 402.

[0050] A predetermined distance is provided between the inner surface of the ring gear 605 and the outer surface of the rotating ring 601 to prevent friction between the rotating ring 601 and the ring gear 605 when the rotating ring 601 is rotated. Furthermore, the distance between the ring gear 605 and the rotating ring 601 is prevented, which may cause unstable meshing. This improves the stability and safety of the clamping of the cutting teeth 500.

[0051] The shearer for ultra-long working faces in a coal mine according to the present embodiment utilizes a clamping assembly 600 disposed within the pick holder 400 to prevent damage to the clamping assembly 600 during operation. The coordinated action of the rotating ring 601, the arc-shaped pressure plate 603, the gear 1 604, and the ring gear 605 securely clamps the cutting teeth 500, preventing them from loosening or falling off during the cutting process, thereby ensuring the stability and reliability of the shearer. The provision of the clamping assembly 600 facilitates replacement of the cutting teeth 500, thereby improving the stability of coal mining.

[0052] In some embodiments, there is a preset distance A between the inner surface of the ring gear 605 and the outer surface of the rotating ring 601, and 3 cm ≤ A ≤ 7 cm.

[0053] There are multiple avoidance arc slots 602 and multiple gears 1 604 . The multiple avoidance arc slots 602 are spaced apart in the circumferential direction of the rotating ring 601 . The multiple avoidance arc slots 602 and the multiple gears 1 604 correspond one to one.

[0054] Specifically, if Figures 1 to 12 As shown, a predetermined distance A is defined between the inner surface of the ring gear 605 and the outer surface of the rotating ring 601, and 3 cm ≤ A ≤ 7 cm. A can be 3 cm to improve the stability of the engagement between the rotating ring 601 and the ring gear 605. A can be 7 cm to reduce friction between the rotating ring 601 and the ring gear 605.

[0055] At the same time, there are multiple gears 604, and multiple gears 604 are arranged at intervals in the circumferential direction of the rotating ring 601. Gear 1 604 is rotatably set in the avoidance arc groove 602 by setting a rotating shaft, so that gear 1 604 can rotate relative to the rotating ring 601, and then gear 1 604 drives the arc pressure plates 603 to approach each other to clamp the cutting teeth 500, or gear 1 604 drives the arc pressure plates 603 to move away from each other to facilitate the disassembly of the cutting teeth 500.

[0056] By arranging a plurality of gears 604 and arc-shaped pressure plates 603 on the rotating ring 601, the clamping and releasing of the cutting teeth 500 are achieved.

[0057] The ultra-long working face shearer for coal mining according to the present invention, by setting a preset spacing A, prevents the ring gear 605 from being too close to the rotating ring 601, which would cause friction between the rotating ring 601 and the ring gear 605. It also prevents the ring gear 605 from being too far from the rotating ring 601, which would cause unstable meshing, thereby improving the stability and safety of the clamping of the cutting teeth 500. The provision of multiple gears 1 604 improves the stability of the clamping and release of the cutting teeth 500.

[0058] In some embodiments, each group of cutting tooth seats 400 includes an arch frame 401 welded on the circumferential surface of the cutting drum 200, the arch frame 401 is inclined, and a tubular seat 402 is fixed through the middle of the top of the arch frame 401, and a blocking ring 403 is fixedly installed on the top of the tubular seat 402. An annular groove 404 is opened on the inner wall of the tubular seat 402, and a ring gear 605 is embedded in the annular groove 404. A separating plate 405 is fixedly installed on the inner wall of the tubular seat 402, and the separating plate 405 is located on the lower side of the annular groove 404. A ring 406 is fixedly installed on the top of the separating plate 405, and the rotating ring 601 is sleeved on the outside of the ring 406.

[0059] Specifically, if Figures 1 to 12As shown, the tubular seat 402 is perpendicular to the top of the arch frame 401, that is, the tubular seat 402 is also inclined. Each set of cutting teeth 500 includes a tapered tooth 501. A connecting post 502 is fixedly mounted at the bottom center of the tapered tooth 501. The bottom end of the connecting post 502 is fixedly mounted with an insert 503. The insert 503 is inserted into the interior of the collar 406, and the top of the insert 503 is flush with the top of the collar 406. The inner diameter of the blocking ring 403 and the inner diameter of the collar 406 are both equal to the diameter of the insert 503. The bottom end of the tapered tooth 501 fits against the top of the blocking ring 403, sealing the opening of the blocking ring 403 and thereby improving the stability of the device operation.

[0060] Furthermore, an array of arc grooves 407 are opened through the upper surface of the separation plate 405, and the arc grooves 407 are located between the outer wall of the ring 406 and the inner wall of the tubular seat 402. A limiting ring 408 is fixedly installed on the inner wall of the tubular seat 402, and the limiting ring 408 is located below the separation plate 405. An array of sockets 409 are opened through the surface of the limiting ring 408.

[0061] In some embodiments, the rotating component includes a slider 606 and a rotating adjustment member, the rotating adjustment member includes a turntable 607 fixedly mounted on the bottom of the slider 606, a sleeve 608 fixedly mounted at the center of the bottom of the turntable 607, and a slide groove 609 integrally formed on both sides of the sleeve 608. A slide rod 610 is slidably connected in the sleeve 608, and a boss 611 is fixedly mounted on the top circumferential surface of the slide rod 610. The boss 611 is slidably connected to the slide groove 609. A tension spring 612 is fixedly mounted between the top of the slide rod 610 and the bottom of the turntable 607;

[0062] An adjustment disk 613 is fixedly installed at the bottom end of the sliding rod 610, and the adjustment disk 613 is located below the limiting ring 408. An array of pins 614 are fixed on the top of the adjustment disk 613, and the pins 614 are inserted into the sockets 409. The number of sockets 409 is an integer multiple of the number of pins 614. A handle 615 is fixedly installed at the bottom of the adjustment disk 613.

[0063] Specifically, if Figures 1 to 12 As shown, the rotating adjustment member includes a turntable 607 installed at the bottom of the slider 606, the turntable 607 is attached to the bottom of the partition plate 405, the turntable 607 is attached to the bottom of the partition plate 405, a sleeve 608 is fixedly installed at the center of the bottom of the turntable 607, and a slide groove 609 is integrally formed on both sides of the sleeve 608. A slide rod 610 is slidably connected inside the sleeve 608, and a boss 611 is fixedly installed on the top circumferential surface of the slide rod 610. The boss 611 is slidably connected to the slide groove 609. A tension spring 612 is fixedly installed between the top of the slide rod 610 and the bottom of the turntable 607. The tension of the tension spring 612 makes the slide rod 610 tend to move upward.

[0064] An adjustment disk 613 is fixedly mounted at the bottom of the slide bar 610. The adjustment disk 613 is located below the retaining ring 408. A plurality of posts 614 are fixed to the top of the adjustment disk 613. The posts 614 are inserted into the sockets 409. The number of sockets 409 is an integral multiple of the number of posts 614. A handle 615 is fixedly mounted at the bottom of the adjustment disk 613. Pulling the handle 615 downward moves the adjustment disk 613 downward, removing the posts 614 from the sockets 409. At this point, the adjustment disk 613 can be rotated, and the boss 611 provided on the surface of the slide bar 610 drives the sleeve 608, the slide groove 609, and the rotating disk 607 to rotate, thereby driving the slider 606 to slide within the arcuate groove 407, causing the rotating ring 601 to rotate within the tubular seat 402. Afterwards, the handle 615 is released, and under the tension of the tension spring 612, the adjustment disk 613 moves upward, and the plug 614 is inserted into the socket 409, preventing the adjustment disk 613 from rotating. The adjustment disk 613 and the handle 615 move into the interior of the tubular seat 402 to prevent the ore from hitting the adjustment disk 613 and the handle 615.

[0065] Gear 1 604 is fixedly mounted in the middle of the front end of the arc-shaped pressure plate 603. A ring gear 605 is embedded in the annular groove 404, and gear 1 604 meshes with the ring gear 605. Consequently, when the rotating ring 601 rotates within the tubular seat 402, gear 1 604 rolls on the ring gear 605, causing the arc-shaped pressure plate 603 to deflect relative to the rotating ring 601. As the arc-shaped pressure plate 603 deflects to the upper side of the embedded disk 503, the arc-shaped pressure plate 603 and the separator disk 405 cooperate to clamp the embedded disk 503, preventing the cutting teeth 500 from dislodging from the tubular seat 402.

[0066] An adjustment disk 613 is fixedly mounted at the bottom of the slide bar 610. The adjustment disk 613 is located below the retaining ring 408. A plurality of posts 614 are fixed to the top of the adjustment disk 613. The posts 614 are inserted into the sockets 409. The number of sockets 409 is an integral multiple of the number of posts 614. A handle 615 is fixedly mounted at the bottom of the adjustment disk 613. Pulling the handle 615 downward moves the adjustment disk 613 downward, removing the posts 614 from the sockets 409. At this point, the adjustment disk 613 can be rotated, and the boss 611 provided on the surface of the slide bar 610 drives the sleeve 608, the slide groove 609, and the rotating disk 607 to rotate, thereby driving the slider 606 to slide within the arcuate groove 407, causing the rotating ring 601 to rotate within the tubular seat 402. Afterwards, the handle 615 is released, and under the tension of the tension spring 612, the adjustment disk 613 moves upward, and the plug 614 is inserted into the socket 409, preventing the adjustment disk 613 from rotating. The adjustment disk 613 and the handle 615 move into the interior of the tubular seat 402 to prevent the ore from hitting the adjustment disk 613 and the handle 615.

[0067] In the super-long working face coal mining machine of the embodiment of the present invention, by holding the handle 615 and pulling it downward, the adjusting disk 613 moves downward, the plug post 614 is disengaged from the socket 409, and then the handle 615 is rotated to rotate the adjusting disk 613, and the boss 611 on the slide rod 610 drives the sleeve 608 and the slide groove 609 to rotate, the turntable 607 rotates synchronously, the slider 606 slides in the arc groove 407, and drives the rotating ring 601 to rotate, and the gear 1 604 is rotated on the annular gear The wheel 605 rolls on the wheel 605 and drives the arc-shaped pressure plate 603 to deflect and move away from the top of the embedded disk 503, so that the cutting tooth 500 can be pulled out from the tubular seat 402; when installing the cutting tooth 500, the embedded disk 503 is inserted into the inside of the ring 406, and then the adjusting disk 613 is rotated in the reverse direction, which can drive the rotating ring 601 to rotate in the reverse direction, and the arc-shaped pressure plate 603 is deflected to the top of the embedded disk 503, limiting the cutting tooth 500; thereby achieving the purpose of facilitating the replacement of the cutting tooth 500.

[0068] In some embodiments, a drive shaft 700 is fixedly installed at the rear end of the cutting drum 200, and the drive shaft 700 is inserted into the front side of the left end of the hollow rotating arm 100. A rotating drive member 800 is provided inside the hollow rotating arm 100, and the rotating drive member 800 is used to drive the drive shaft 700 to rotate. A limiting assembly 900 is provided inside the hollow rotating arm 100, and the limiting assembly 900 is used to clamp on the surface of the drive shaft 700.

[0069] Two annular flanges 701 are fixedly mounted on the circumferential surface of the front half of the drive shaft 700, and two ridges 702 are fixedly mounted on the circumferential surface of the rear half of the drive shaft 700;

[0070] A mounting hole 101 is provided on the front side of the left end of the hollow pivot arm 100. The diameter of the mounting hole 101 is equal to the diameter of the annular flange 701. A protective shell 102 is integrally formed on the rear side of the hollow pivot arm 100. A refueling window is provided on the top of the hollow pivot arm 100. A cover plate 103 is fixed to the top of the hollow pivot arm 100 by bolts, and the cover plate 103 is sealed on the refueling window opening.

[0071] In some embodiments, the rotary drive member 800 includes a motor 801 fixedly mounted in the protective shell 102, a reducer 802 fixedly mounted on the output end of the motor 801, and a sprocket 803 fixedly mounted on the output end of the reducer 802;

[0072] An annular sleeve 804 is fixedly mounted on the inner wall of the rear side of the left end of the hollow rotating arm 100. A connecting ring 805 is rotatably connected inside the annular sleeve 804. The connecting ring 805 has an L-shaped cross section. A second sprocket 806 is fixedly mounted on the front side of the connecting ring 805. A docking groove 807 is provided through the center of the second sprocket 806. The first sprocket 803 and the second sprocket 806 are connected by a chain 808.

[0073] The driving shaft 700 and the protruding strip 702 are inserted into the docking groove 807 .

[0074] Furthermore, the limiting assembly 900 includes a left clamping seat 901 and a right clamping seat 902. The left clamping seat 901 and the right clamping seat 902 are both provided with an arc surface on the opposite side. The left clamping seat 901 and the right clamping seat 902 are respectively attached to the circumferential surface of the front half of the driving shaft 700. The two annular flanges 701 are attached to the front and rear sides of the left clamping seat 901 and the right clamping seat 902.

[0075] A linear rack 903 is fixedly mounted on the top and bottom of the left clamping seat 901, and an L-shaped rack 904 is fixedly mounted on the top and bottom of the right side of the right clamping seat 902. A second gear 905 is meshed between the linear rack 903 and the L-shaped rack 904, and the second gear 905 is rotatably connected to the inner wall of the hollow rotating arm 100;

[0076] A hydraulic cylinder 906 is fixedly installed on the right side of the right clamping seat 902, and two guide rods 907 are fixedly installed on the left side of the left clamping seat 901. A guide tube 908 is sleeved on the outer side of the left end of the guide rod 907, and the guide tube 908 is fixedly installed on the inner wall of the left end of the hollow rotating arm 100.

[0077] The ultra-long working face coal mining machine of the embodiment of the present invention is driven by the contraction of the output end of the hydraulic cylinder 906 to move the right clamping seat 902 to the right, thereby driving the L-shaped rack 904 to move to the right, driving the second gear 905 to rotate, thereby driving the linear rack 903 and the left clamping seat 901 to move to the left; and by moving the left clamping seat 901 and the right clamping seat 902 away from each other and avoiding the annular flange 701, the drive shaft 700 can be pulled out from the hollow rotating arm 100 and the cutting drum 200 can be removed; thereby achieving the purpose of facilitating the removal of the cutting drum 200; and by removing the cutting drum 200 from the hollow rotating arm 100, the cutting teeth 500 on the cutting drum 200 can be easily replaced;

[0078] Furthermore, an oil storage tank 909 is fixedly mounted on the inner wall of the hollow rotating arm 100, a sealing plate 910 is provided on the top of the oil storage tank 909, and the sealing plate 910 is attached to the bottom of the cover plate 103. A guide pipe 911 is connected to the bottom left side of the oil storage tank 909, and the other end of the guide pipe 911 is connected to the right side of the right clamping seat 902;

[0079] A cavity 912 is provided inside the left clamping seat 901 and the right clamping seat 902. A through hole 913 is provided on the opposite side of the left clamping seat 901 and the right clamping seat 902. The through hole 913 is connected to the cavity 912. The curved surfaces of the left clamping seat 901 and the right clamping seat 902 are provided with an array of cylindrical grooves. Rollers 914 are rotatably connected in the cylindrical grooves. Liquid guide holes 915 are provided on the inner wall of the cavity 912 of the left clamping seat 901 and the right clamping seat 902. The liquid guide holes 915 correspond one-to-one to the cylindrical grooves, and the cylindrical grooves are connected to the cavity 912 through the liquid guide holes 915.

[0080] A hollow plate 916 is fixedly installed on the inner wall of each through hole 913, and a cross bar 917 is slidably connected to the center of the hollow plate 916. A conical sealing plug 918 is fixedly installed on the end of the cross bar 917 close to the opening of the through hole 913. A spring 919 is fixedly installed between the conical sealing plug 918 and the hollow plate 916. An embedded ring 920 is fixedly installed on the inner wall of the opening of the through hole 913. The embedded ring 920 is adapted to the circumferential surface of the conical sealing plug 918, and the conical sealing plug 918 is inserted through the embedded ring 920.

[0081] In the coal mining machine with an extra-long working face according to the embodiment of the present invention, when the output end of the hydraulic cylinder 906 is extended, causing the left clamping seat 901 and the right clamping seat 902 to fit against the surface of the drive shaft 700, the annular flange 701 is limited, stably connecting the drive shaft 700 to the hollow rotating arm 100. The roller 914 fits against the surface of the drive shaft 700. During the rotation of the drive shaft 700, the friction between the drive shaft 700 and the roller 914 drives the roller 914 to rotate. The lubricating oil in the cavity 912 is transferred to the surface of the drive shaft 700 through the roller 914, lubricating the drive shaft 700 and reducing the friction between the drive shaft 700 and the left clamping seat 901 and the right clamping seat 902. Thus, the purpose of automatically lubricating the drive shaft 700 is achieved.

[0082] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A coal mining machine with an ultra-long working face for coal mining, characterized in that: include: A hollow rotating arm, a cutting drum is provided on the front side of the left end of the hollow rotating arm, a spiral cutting plate is welded on the circumferential surface of the cutting drum, notches are equidistantly provided on the spiral cutting plate in the circumferential direction, a pick seat is provided in each notch, a cutting tooth is inserted on the pick seat, a clamping assembly is provided inside the pick seat, and the clamping assembly is used to clamp on the surface of the cutting tooth; In which, the clamping assembly includes a rotating ring, an arc pressure plate, gear 1, an annular gear and a rotating component arranged in the cutting tooth seat, the rotating ring is provided with an avoidance arc groove, the annular gear is arranged in the avoidance arc groove, the annular gear is sleeved on the outer circumference of the rotating ring, and there is a preset distance between the inner surface of the annular gear and the outer surface of the rotating ring, and the annular gear is meshed with the gear 1, the arc pressure plate is arranged on the gear 1, the rotating component is connected to the bottom of the rotating ring, and the rotating component drives the rotating ring to rotate relative to the cutting tooth to rotate gear 1 and the arc pressure plate, so that the arc pressure plate extends into or out of the rotating ring.

2. The ultra-long working face coal mining machine for coal mining according to claim 1, characterized in that: There is a preset distance A between the inner surface of the ring gear and the outer surface of the rotating ring, and 3cm≤A≤7cm, There are multiple avoidance arc grooves and multiple gears, and the multiple avoidance arc grooves are arranged at intervals in the circumferential direction of the rotating ring. The multiple avoidance arc grooves and the multiple gears correspond one to one.

3. The ultra-long working face coal mining machine for coal mining according to claim 1, characterized in that: Each group of the cutting tooth seats includes an arch frame welded on the circumferential surface of the cutting drum, the arch frame is inclined, a tubular seat is fixed through the middle of the top of the arch frame, a blocking ring is fixedly installed on the top of the tubular seat, an annular groove is opened on the inner wall of the tubular seat, a ring gear is embedded in the annular groove, a separating plate is fixedly installed on the inner wall of the tubular seat, the separating plate is located on the lower side of the annular groove, a collar is fixedly installed on the top of the separating plate, and the rotating ring is sleeved on the outside of the collar.

4. The ultra-long working face coal mining machine for coal mining according to claim 3, characterized in that: The upper array of the separating plate is provided with arc grooves, the arc grooves are located between the outer wall of the collar and the inner wall of the tubular seat, the inner wall of the tubular seat is fixedly installed with a limiting ring, the limiting ring is located below the separating plate, and the surface of the limiting ring is provided with an array of insertion holes.

5. The ultra-long working face coal mining machine for coal mining according to claim 4, characterized in that: Each group of cutting teeth includes conical teeth, a connecting column is fixedly installed at the center of the bottom of the conical teeth, an embedded disk is fixedly installed at the bottom end of the connecting column, the embedded disk is inserted into the inside of the ring, and the top of the embedded disk is flush with the top of the ring, the bottom end of the conical teeth is attached to the top of the blocking ring, and the blocking ring opening is sealed.

6. The ultra-long working face coal mining machine for coal mining according to claim 5, characterized in that: The rotating component includes a slider and a rotating adjusting member, and the rotating adjusting member is fixedly installed at the bottom of the slider. The bottom array of the rotating ring is fixed with a slider, and the slider corresponds to the arc groove one by one. The slider is slidably connected in the arc groove, and a rotation adjustment member is fixedly installed at the bottom of the slider. The rotation adjustment member includes a turntable fixedly mounted on the bottom of the slider, the turntable is fitted to the bottom of the separator, a sleeve is fixedly mounted at the center of the bottom of the turntable, and slide grooves are integrally formed on both sides of the sleeve, a slide rod is slidably connected in the sleeve, a boss is fixedly mounted on the circumferential surface of the top end of the slide rod, the boss is slidably connected to the slide groove, and a tension spring is fixedly mounted between the top end of the slide rod and the bottom of the turntable; An adjusting disk is fixedly mounted on the bottom end of the slide rod, and the adjusting disk is located below the limiting ring. An array of plug posts is fixed on the top of the adjusting disk, and the plug posts are inserted into the sockets. The number of the sockets is an integer multiple of the number of the plug posts. A handle is fixedly mounted on the bottom of the adjusting disk.

7. The ultra-long working face coal mining machine according to claim 6, characterized in that: A drive shaft is fixedly installed at the rear end of the cutting drum, and the drive shaft is inserted into the front side of the left end of the hollow rotating arm. A rotating drive member is provided inside the hollow rotating arm, and the rotating drive member is used to drive the drive shaft to rotate. A limiting assembly is provided inside the hollow rotating arm, and the limiting assembly is used to clamp on the surface of the drive shaft. Two annular flanges are fixedly mounted on the circumferential surface of the front half of the drive shaft, and two convex strips are fixedly mounted on the circumferential surface of the rear half of the drive shaft; A mounting hole is provided on the front side of the left end of the hollow pivot arm, and the diameter of the mounting hole is equal to the diameter of the annular flange. A protective shell is integrally formed on the rear side of the hollow pivot arm, and a refueling window is provided on the top of the hollow pivot arm. A cover plate is fixed to the top of the hollow pivot arm by bolts, and the cover plate is sealed on the refueling window opening.

8. The ultra-long working face coal mining machine for coal mining according to claim 7, characterized in that: The rotary drive member includes a motor fixedly mounted in a protective shell, a reducer fixedly mounted on an output end of the motor, and a sprocket 1 fixedly mounted on an output end of the reducer; An annular sleeve is fixedly installed on the inner wall of the rear side of the left end of the hollow rotating arm, and a connecting ring is rotatably connected in the annular sleeve. The cross section of the connecting ring is L-shaped, and a sprocket 2 is fixedly installed on the front side of the connecting ring. A docking groove is opened through the center of the sprocket 2, and the sprockets 1 and 2 are connected by a chain; The driving shaft and the convex strip are inserted into the docking groove.

9. The ultra-long working face coal mining machine for coal mining according to claim 7, characterized in that: The limiting assembly includes a left clamping seat and a right clamping seat, and the left clamping seat and the right clamping seat are each provided with an arc surface on opposite sides. The left clamping seat and the right clamping seat are respectively attached to the circumferential surface of the front half of the drive shaft, and the two annular flanges are attached to the front and rear sides of the left clamping seat and the right clamping seat; The top and bottom of the left clamping seat are fixedly mounted with a linear rack, and the top and bottom of the right side of the right clamping seat are fixedly mounted with an L-shaped rack. A second gear is engaged between the linear rack and the L-shaped rack, and the second gear is rotatably connected to the inner wall of the hollow rotating arm. A hydraulic cylinder is fixedly installed on the right side of the right clamp seat, and two guide rods are fixedly installed on the left side of the left clamp seat. A guide tube is sleeved on the outer side of the left end of the guide rod, and the guide tube is fixedly installed on the inner wall of the left end of the hollow rotating arm.

10. The ultra-long working face coal mining machine according to claim 9, characterized in that: An oil storage tank is fixedly installed on the inner wall of the hollow rotating arm, a sealing plate is provided on the top of the oil storage tank, and the sealing plate is attached to the bottom of the cover plate. A guide pipe is connected to the bottom left side of the oil storage tank, and the other end of the guide pipe is connected to the right side of the right clamp seat; A cavity is provided inside the left clamp seat and the right clamp seat, and a through hole is provided on the opposite side of the left clamp seat and the right clamp seat, and the through hole is connected to the cavity. The arc surface of the left clamp seat and the right clamp seat are provided with an array of cylindrical grooves, and rollers are rotatably connected in the cylindrical grooves. Liquid guide holes are provided on the inner wall of the cavity of the left clamp seat and the right clamp seat, and the liquid guide holes correspond to the cylindrical grooves one by one. The cylindrical grooves are connected to the cavity through the liquid guide holes. A hollow plate is fixedly installed on the inner wall of each through hole, a cross bar is slidably connected to the center of the hollow plate, a conical sealing plug is fixedly installed on the end of the cross bar close to the through hole opening, a spring is fixedly installed between the conical sealing plug and the hollow plate, an embedded ring is fixedly installed on the inner wall of the through hole opening, the embedded ring is adapted to the circumferential surface of the conical sealing plug, and the conical sealing plug is inserted through the embedded ring.

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