Shearer, coal mining system and coal mining method

Abstract

The present invention discloses a cutting shearer, a coal mining system and a coal mining method. The traveling part can realize the self-movement of the shearer. The cutting part is arranged on the traveling part and is suitable for cutting coal and rock. The loading part is arranged on the traveling part and is suitable for collecting and conveying the coal and rock cut by the cutting part. The discharging part is arranged on the traveling part, and the conveying direction of the discharging part and the conveying direction of the loading part form an included angle. The discharging part has a feeding end and a discharging end. The feeding end of the discharging part is suitable for receiving the coal and rock conveyed by the loading part, and the discharging end of the discharging part is suitable for docking with a conveyor. At least part of the discharging part can be adjusted in pitch so that the height of the discharging end can be adjusted. The cutting shearer, the coal mining system and the coal mining method according to the embodiments of the present invention solve the problem that the existing shearer can only travel on a dedicated track, can be applied to multiple scenarios such as longwall working faces, shortwall working faces, and tunneling working faces, improve the application range of the shearer, and at the same time simplify the coal mining process.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and specifically, to a crawler walking two-way cutting coal mining machine, a coal mining system applying the cutting coal mining machine, and a coal mining method applying the coal mining machine. Background Art

[0002] A coal mining machine is one of the important devices for realizing the mechanization and modernization of coal mine production. Mechanized coal mining can reduce physical labor, improve safety, and achieve the goals of high output, high efficiency, and low consumption. In related technologies, the coal mining process is complex and the coal mining efficiency is low. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in related technologies to some extent.

[0004] To this end, an embodiment of the present invention provides a cutting coal mining machine with a wide application range and a simplified coal mining process.

[0005] An embodiment of the present invention also provides a coal mining system applying the above cutting coal mining machine.

[0006] An embodiment of the present invention also provides a coal mining method applying the above cutting coal mining machine.

[0007] The cutting coal mining machine according to an embodiment of the present invention includes a walking part, a cutting part, a loading part, and a discharging part. The walking part can realize the self-movement of the coal mining machine. The cutting part is arranged on the walking part and is suitable for cutting coal and rock. The loading part is arranged on the walking part and is suitable for collecting and conveying the coal and rock cut by the cutting part. The discharging part is arranged on the walking part, and the conveying direction of the discharging part and the conveying direction of the loading part form an included angle. The discharging part has a feeding end and a discharging end. The feeding end of the discharging part is suitable for receiving the coal and rock conveyed by the loading part. The discharging end of the discharging part is suitable for docking with a conveyor, and at least part of the discharging part can be adjusted in a pitching manner so that the height of the discharging end is adjustable.

[0008] The cutting coal mining machine according to an embodiment of the present invention solves the problem that the existing coal mining machine can only walk on a dedicated track, can be applied to multiple scenarios such as longwall working faces, shortwall working faces, and heading faces, improves the application range of the coal mining machine, and the coal mining machine in this application does not need to be used in combination with a scraper conveyor, does not need to handle triangular coal and oblique cutting, and does not need to align the scraper conveyor and the hydraulic support, simplifying the coal (mine) mining process.

[0009] In some embodiments, there are two cutting parts, namely a first cutting part and a second cutting part. There are two loading parts, namely a first loading part and a second loading part. The first loading part is adapted to receive the coal and rock cut by the first cutting part, and the second loading part is adapted to receive the coal and rock cut by the second cutting part. The discharging part is arranged between the first loading part and the second loading part and is adapted to receive the coal and rock conveyed by the first loading part and the second loading part.

[0010] In some embodiments, the discharging part is swingable and / or translatable relative to the traveling part so that the feeding end can move towards the first loading part or the second loading part.

[0011] In some embodiments, the discharging part is translatable along the length direction of the traveling part. The conveying directions of the first loading part and the second loading part are arranged oppositely and are both consistent with the length direction of the traveling part. The conveying direction of the discharging part is consistent with the width direction of the traveling part.

[0012] In some embodiments, the discharging part includes a first conveying section, a second conveying section and a telescopic drive. One end of the first conveying section forms the feeding end, the other end of the first conveying section is connected to one end of the second conveying section, the other end of the second conveying section forms the discharging end, the second conveying section is adjustable in pitch relative to the first conveying section, one end of the telescopic drive is rotatably connected to the traveling part, the other end of the telescopic drive is rotatably connected to the second conveying section, and the telescopic drive is telescopic to drive the second conveying section to swing up and down relative to the first conveying section.

[0013] In some embodiments, the discharging part further includes a discharging conveying assembly. The discharging conveying assembly includes a first roller, a second roller, a scraper chain, a first drive and a tensioning member. The first roller is rotatably installed at the feeding end, the second roller is rotatably installed at the discharging end, and the second roller is slidable along the conveying direction of the second conveying section. The scraper chain surrounds the outer peripheral sides of the first roller and the second roller. The scraper chain is adapted to convey the coal and rock. The first drive is arranged on the first conveying section and is adapted to drive the first roller to rotate. The tensioning member is arranged between the second roller and the second conveying section to keep the scraper chain in a tensioned state.

[0014] In some embodiments, the cutting part includes an arm body, a second drive, a third drive, and a cutting head. The arm body is rotatably connected to the traveling part. The second drive is arranged on the arm body. The cutting head is connected to the second drive, and the second drive is adapted to drive the cutting head to rotate. The third drive is arranged between the arm body and the traveling part, and the third drive is adapted to drive the arm body to swing up and down. The loading part includes a shovel plate, a fourth drive, and star wheels. The shovel plate is arranged on the traveling part. The fourth drive and the star wheels are both arranged on the shovel plate. The star wheels are connected to the fourth drive, and the fourth drive is adapted to drive the star wheels to rotate. The star wheels are adapted to send the coal and rock on the shovel plate to the discharging part when rotating under the drive of the fourth drive.

[0015] In some embodiments, the cutting coal mining machine includes an electrical system, a hydraulic system, and a waterway system. The electrical system and the hydraulic system are adapted to provide power support and control for the cutting coal mining machine, and the waterway system is adapted to provide cooling and spraying water for the cutting coal mining machine.

[0016] The coal mining system according to the embodiment of the present invention includes a cutting coal mining machine and a conveyor. The cutting coal mining machine is the cutting coal mining machine described in any one of the above embodiments, and the conveyor is docked with the discharge end of the discharging part.

[0017] The coal mining method according to the embodiment of the present invention includes the following steps:

[0018] Control the first cutting part to cut the coal and rock on one side of the roadway, control the feeding end of the discharging part to move to the first loading part, and the first loading part conveys the coal and rock cut by the first cutting part onto the discharging part;

[0019] Control the second cutting part to cut the coal and rock on the other side of the roadway, control the feeding end of the discharging part to move to the second loading part, and the second loading part conveys the coal and rock cut by the second cutting part onto the discharging part. Description of the Drawings

[0020] Figure 1 It is a schematic structural view of the front view of the embodiment of the present invention.

[0021] Figure 2 It is a schematic structural view of the top view of the embodiment of the present invention.

[0022] Figure 3 It is a schematic structural view of the discharging part of the embodiment of the present invention.

[0023] Reference Signs:

[0024] Traveling part 1; Frame 11; Traveling frame 51; Guide wheel 52;

[0025] Cutting unit 2; First cutting unit 201; Second cutting unit 202; Arm body 21; Second drive 22; Third drive 23; Cutting head 24; Reducer 25; Cutting main shaft 26;

[0026] Loading unit 3; First loading unit 301; Second loading unit 302; Shovel plate 31; Star wheel 32; Fourth drive 33;

[0027] Discharging unit 4; Feeding end 41; Discharging end 42; First conveying section 43; Second conveying section 44; Telescopic drive 45; Pin shaft 46; Discharging conveying assembly 47; First roller 471; Second roller 472; Scraper chain 473; Tensioning member 474. Specific embodiments

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0029] As Figures 1-3 shown, the cutting shearer according to the embodiment of the present invention includes a traveling unit 1, a cutting unit 2, a loading unit 3, and a discharging unit 4. The traveling unit 1 can realize the self-movement of the shearer. The cutting unit 2 is provided on the traveling unit 1 and is adapted to cut coal and rock. The loading unit 3 is provided on the traveling unit 1 and is adapted to collect and convey the coal and rock cut by the cutting unit 2. The discharging unit 4 is provided on the traveling unit 1.

[0030] Specifically, the traveling unit 1 may include a frame 11. The left-right direction may be defined as the length direction of the frame 11. The cutting unit 2, the loading unit 3, and the discharging unit 4 can all be installed on the frame 11. When the traveling unit 1 operates, it can drive the cutting unit 2, the loading unit 3, and the discharging unit 4 to travel in the roadway. Controlling the operation of the cutting unit 2 can cut the coal and rock on the roadway working face. The loading unit 3 can be arranged below the cutting unit 2. When controlling the operation of the loading unit 3, it can collect the coal and rock cut by the cutting unit 2 and convey it to the discharging unit 4.

[0031] The conveying direction of the discharging unit 4 and the conveying direction of the loading unit 3 form an angle. The discharging unit 4 has a feeding end 41 and a discharging end 42. The feeding end 41 of the discharging unit 4 is adapted to receive the coal and rock conveyed by the loading unit 3. The discharging end 42 of the discharging unit 4 is adapted to be docked with a conveyor. At least part of the discharging unit 4 can be adjusted in pitch so that the height of the discharging end 42 is adjustable.

[0032] Specifically, as Figures 1-2 shown, at this time, the conveying direction of the loading unit 3 can be the left-right direction. The angle between the conveying direction of the discharging unit 4 and the conveying direction of the loading unit 3 can be between greater than 0 degrees and less than or equal to 90 degrees, which is convenient for conveying the coal and rock collected by the loading unit 3 to the outside of the shearer.

[0033] Since the discharge end 42 of the discharge part 4 needs to be connected to the conveyor to realize the transportation of the cut coal and rock, the discharge end 42 of the discharge part 4 is arranged to be adjustable in pitch relative to the frame 11. By adjusting the height of the discharge end 42 of the discharge part 4, it can be more convenient to connect with the conveyor, which can improve the efficiency of coal and rock transportation and make the coal mining machine more convenient and efficient when working.

[0034] In the prior art, coal mining machines generally need to run on special tracks and can only be used on longwall working faces, which limits the scope of use of the coal mining machines. In addition, they need to be used in conjunction with scraper conveyors and hydraulic supports, making the coal mining process very complicated.

[0035] The cutting coal mining machine of the embodiment of the present invention solves the problem that the existing coal mining machines can only run on special tracks. It can be used in multiple scenarios such as longwall working faces, shortwall working faces, and excavation working faces, thereby improving the use scope of the coal mining machine. The coal mining machine in the present application does not need to be matched with a scraper conveyor, but only needs to be docked with an ordinary belt conveyor at the discharge end 42 of the unloading part 4. It is more convenient to adjust and use, does not need to handle triangular coal and oblique cutting, and does not need to align the scraper conveyor and hydraulic support, thereby simplifying the coal mining (mining) process.

[0036] In some embodiments, there are two cutting parts 2, which are respectively the first cutting part 201 and the second cutting part 202; there are two loading parts 3, which are respectively the first loading part 301 and the second loading part 302; the first loading part 301 is suitable for receiving the coal rock cut by the first cutting part 201, and the second loading part 302 is suitable for receiving the coal rock cut by the second cutting part 202; the unloading part 4 is arranged between the first loading part 301 and the second loading part 302 and is suitable for receiving the coal rock transported by the first loading part 301 and the second loading part 302.

[0037] Specifically, Figures 1-2 As shown, the first cutting part 201 and the second cutting part 202 can be installed at the left and right ends of the frame 11 respectively, and the first loading part 301 and the second loading part 302 can also be installed at the left and right ends of the frame 11 respectively, wherein the first loading part 301 can be arranged below the first cutting part 201 for collecting and transporting the coal rock cut by the first cutting part 201, and the second loading part 302 can be arranged below the second cutting part 202 for collecting and transporting the coal rock cut by the second cutting part 202.

[0038] The discharging unit 4 can be installed on the frame 11 between the first loading unit 301 and the second loading unit 302. When controlling the first cutting unit 201 to cut coal and rock, the feeding end 41 of the discharging unit 4 can be controlled to dock with the first loading unit 301. At this time, the first loading unit 301 can convey the collected coal and rock to the discharging unit 4, and can convey it to the belt conveyor through the discharging unit 4. When controlling the second cutting unit 202 to cut coal and rock, the feeding end 41 of the discharging unit 4 can be controlled to dock with the second loading unit 302. At this time, the second loading unit 302 can convey the collected coal and rock to the discharging unit 4, and can convey it to the belt conveyor through the discharging unit 4. Thus, the shearer does not need to be used in combination with a scraper conveyor, and there is no need to align the scraper conveyor and the hydraulic support, achieving the purpose of simplifying the coal mining process.

[0039] In some embodiments, the discharging unit 4 is swingable and / or translatable relative to the traveling unit 1 so that the feeding end 41 can move towards the first loading unit 301 or the second loading unit 302.

[0040] Specifically, as Figures 1-2 shown, the discharging end 42 of the discharging unit 4 can swing in the left - right direction relative to the traveling unit 1. For example, when the discharging end 42 of the discharging unit 4 swings to the left relative to the traveling unit 1, the discharging end 42 of the discharging unit 4 can be docked with the first loading unit 301 to convey the coal and rock collected by the first loading unit 301. When the discharging end 42 of the discharging unit 4 swings to the right relative to the traveling unit 1, the discharging end 42 of the discharging unit 4 can be docked with the second loading unit 302 to convey the coal and rock collected by the second loading unit 302.

[0041] In addition, the discharging end 42 of the discharging unit 4 can also translate in the left - right direction relative to the traveling unit 1. For example, the discharging unit 4 can be slidably connected to the frame 11 in the left - right direction through a slide rail, and a hydraulic cylinder or a threaded drive method of driving a threaded rod to rotate by a motor can be used to achieve the sliding of the discharging unit 4 in the left - right direction. When the discharging end 42 of the discharging unit 4 translates to the left relative to the traveling unit 1, the discharging end 42 of the discharging unit 4 can be docked with the first loading unit 301 to convey the coal and rock collected by the first loading unit 301. When the discharging end 42 of the discharging unit 4 translates to the right relative to the traveling unit 1, the discharging end 42 of the discharging unit 4 can be docked with the second loading unit 302 to convey the coal and rock collected by the second loading unit 302.

[0042] In some embodiments, the discharging unit 4 is translatable along the length direction of the traveling unit 1. The conveying directions of the first loading unit 301 and the second loading unit 302 are arranged oppositely and are both consistent with the length direction of the traveling unit 1. The conveying direction of the discharging unit 4 is consistent with the width direction of the traveling unit 1.

[0043] Specifically, as Figures 1-2 shown, the discharging part 4 can be slidably connected to the frame 11 in the left-right direction by means of a slide rail, and a hydraulic cylinder or a screw drive in which a motor drives a threaded rod to rotate can be used to achieve the sliding of the discharging part 4 in the left-right direction. When the shearer in the present application is in the working state in this orientation, the first cutting part 201 and the second cutting part 202 can be distributed left and right, the conveying direction of the first loading part 301 can be to the right, the conveying direction of the second loading part 302 can be to the left, and the conveying direction of the discharging part 4 can be in the front-back direction, which is convenient for the discharging part 4 to be docked with the belt conveyor and convey coal and rock.

[0044] In some embodiments, the discharging part 4 includes a first conveying section 43, a second conveying section 44 and a telescopic drive 45. One end of the first conveying section 43 forms a feeding end 41, the other end of the first conveying section 43 is connected to one end of the second conveying section 44, the other end of the second conveying section 44 forms a discharging end 42, the second conveying section 44 can be adjusted in pitch relative to the first conveying section 43, one end of the telescopic drive 45 is rotatably connected to the traveling part 1, the other end of the telescopic drive 45 is rotatably connected to the second conveying section 44, and the telescopic drive 45 can be telescoped to drive the second conveying section 44 to swing up and down relative to the first conveying section 43.

[0045] Specifically, as Figure 3 shown, the first conveying section 43 can be installed on the frame 11, the front end of the second conveying section 44 can be rotatably connected to the frame 11 through a pin shaft 46, and at the same time the front end of the second conveying section 44 is rotatably connected to the rear end of the first conveying section 43. The front end of the first conveying section 43 can be the feeding end 41, the rear end of the second conveying section 44 can be the discharging end 42, the telescopic drive 45 can be a hydraulic cylinder, the front end of the telescopic drive 45 can be rotatably connected to the frame 11, the rear end of the telescopic drive 45 can be rotatably connected to the second conveying section 44, and by controlling the telescopic drive 45 to telescope, the pitching swing of the second telescopic end relative to the frame 11 can be controlled to realize the height adjustment of the discharging end 42 of the second conveying section 44, so as to facilitate docking with the belt conveyor, and thus facilitate the completion of the conveying of coal and rock, and improve the coal mining efficiency.

[0046] In some embodiments, the unloading portion 4 also includes a unloading conveying assembly 47, which includes a first roller 471, a second roller 472, a scraper chain 473, a first drive and a tensioner 474. The first roller 471 is rotatably installed at the feed end 41, the second roller 472 is rotatably installed at the discharge end 42, and the second roller 472 is slidable along the conveying direction of the second conveying section 44. The scraper chain 473 is wrapped around the outer peripheral side of the first roller 471 and the second roller 472. The scraper chain 473 is suitable for conveying coal and rock. The first drive is provided in the first conveying section 43 and is suitable for driving the first roller 471 to rotate. The tensioner 474 is provided between the second roller 472 and the second conveying section 44 to keep the scraper chain 473 in a tensioned state.

[0047] Specifically, Figure 3 As shown, the first roller 471 can be rotatably installed at the front end of the first conveying section 43, the second roller 472 can be rotatably installed at the rear end of the second conveying section 44, the scraper chain 473 can be wrapped around the outer circumference of the first roller 471 and the second roller 472, the first drive can be a motor, the first drive can be installed at the front end of the first conveying section 43 and connected to the first roller 471, and at the same time, sprockets compatible with the scraper chain 473 can be installed on the first roller 471 and the second roller 472. When the first drive is controlled to operate, the first roller 471, the second roller 472 and the scraper chain 473 can be driven to rotate, thereby realizing the transportation of coal and rock.

[0048] Slots in the front-to-back direction may be provided on the left and right sides of the rear end of the second conveying section 44, and the left and right ends of the second roller 472 may be respectively fitted in the two slots and slide along the slots in the front-to-back direction. The tensioning member 474 may be a tensioning cylinder, and there may be two tensioning members 474. The front ends of the two tensioning members 474 may be fixedly connected to the second conveying section 44, and the rear ends may be fixedly connected to the second roller 472, and a backward thrust may be applied to the second roller 472, so that the scraper chain 473 may remain in a tensioned state during the coal and rock conveying process to facilitate the coal and rock conveying.

[0049] In some embodiments, the cutting part 2 includes an arm body 21, a second drive 22, a third drive 23 and a cutting head 24. The arm body 21 is rotatably connected to the walking part 1, the second drive 22 is arranged on the arm body 21, the cutting head 24 is connected to the second drive 22, and the second drive 22 is suitable for driving the cutting head 24 to rotate, and the third drive 23 is arranged between the arm body 21 and the walking part 1, and the third drive 23 is suitable for driving the arm body 21 to pitch and swing.

[0050] Specifically, Figures 1-2As shown, the first cutting part 201 and the second cutting part 202 can both include an arm body 21, a second drive 22, a third drive 23 and a cutting head 24. The arm body 21 can be rotatably connected to the frame 11 in the vertical direction. The second drive 22 can be a motor, and the second drive 22 can be connected to the cutting head 24 through a speed reducer 25 and a cutting main shaft 26. The output end of the second drive 22 is fixedly connected to the input end of the speed reducer 25, the output end of the speed reducer 25 is fixedly connected to one end of the cutting main shaft 26, and the other end of the cutting main shaft 26 is fixedly connected to the cutting head 24. When controlling the operation of the second drive 22, the cutting head 24 can be driven to rotate to cut the coal and rock on the working surface.

[0051] The third drive 23 can be a hydraulic cylinder. The two ends of the third drive 23 can be respectively hinged to the arm body 21 and the frame 11. By controlling the telescopic movement of the third drive 23, the arm body 21 and the cutting head 24 can be driven to swing up and down, and the cutting range of the coal and rock can be expanded.

[0052] In some embodiments, the loading part 3 includes a scraper plate 31, a fourth drive 33 and a star wheel 32. The scraper plate 31 is arranged on the traveling part 1. The fourth drive 33 and the star wheel 32 are both arranged on the scraper plate 31. The star wheel 32 is connected to the fourth drive 33, and the fourth drive 33 is adapted to drive the star wheel 32 to rotate. When the star wheel 32 rotates under the drive of the fourth drive 33, the coal and rock on the scraper plate 31 can be sent towards the unloading part 4.

[0053] Specifically, as Figures 1-2 shown, the first loading part 301 and the second loading part 302 can both include a scraper plate 31, a fourth drive 33 and a star wheel 32. The scraper plate 31 can be installed on the frame 11 and located below the cutting part 2 on the same side of the frame 11. The star wheel 32 can be rotatably installed on the upper part of the scraper plate 31. The fourth drive 33 can be a motor. The fourth drive 33 can be installed below the star wheel 32 and the output end of the fourth drive 33 can be connected to the star wheel 32. When controlling the operation of the fourth drive 33, the star wheel 32 can be driven to rotate. As the star wheel 32 rotates, the coal and rock cut by the cutting part 2 can be conveyed towards the unloading part 4.

[0054] The traveling part 1 can also include two traveling components. The two traveling components can be symmetrically arranged on the front and rear sides of the frame 11. Each traveling component can include a traveling frame 51, a driving wheel, a guiding wheel 52, a crawler belt and a fifth drive. The traveling frame 51 is arranged on the frame 11. The driving wheel and the guiding wheel 52 can be spaced apart in the left - right direction and are both rotatably installed on the traveling frame 51. The crawler belt is wound around the outer peripheral sides of the driving wheel and the guiding wheel 52. The fifth drive is connected to the driving wheel and is adapted to drive the driving wheel to rotate, thereby driving the crawler belt to travel. The traveling part 1 also includes a tensioning device for the crawler belt to keep the crawler belt in a tensioned state during the traveling process.

[0055] In some embodiments, the roadheader includes an electrical system, a hydraulic system, and a waterway system. The electrical system and the hydraulic system are adapted to provide power support and control for the traveling part 1, the cutting part 2, the loading part 3, the discharging part 4, etc. of the roadheader, and the waterway system is adapted to provide cooling and spraying water for the roadheader.

[0056] The coal mining system of the embodiments of the present invention is described below.

[0057] The coal mining system of the embodiments of the present invention includes a roadheader and a conveyor. The roadheader can be the roadheader in the above embodiments, and the conveyor is docked with the discharge end 42 of the discharging part 4. Specifically, the conveyor can be a belt conveyor. This coal mining system can be applied to multiple scenarios such as longwall working faces, shortwall working faces, and heading faces, improving the application range of the roadheader. The cooperation mode between the discharge end 42 of the discharging part 4 and the belt conveyor is more convenient for adjustment and use.

[0058] The coal mining method of the embodiments of the present invention is described below.

[0059] The coal mining method of the embodiments of the present invention includes the following steps:

[0060] S1: Control the first cutting part 201 to cut the coal and rock on one side of the roadway, control the feed end 41 of the discharging part 4 to move to the first loading part 301, and the first loading part 301 conveys the coal and rock cut by the first cutting part 201 onto the discharging part 4.

[0061] Specifically, when it is necessary to cut the coal and rock on the working face on one side of the roadway, first, the traveling part 1 can be driven to drive the first cutting part 201 to move to the position to be cut. At the same time, the feed end 41 of the discharging part 4 can be controlled to move towards the first loading part 301 and dock with the first loading part 301. Control the second drive 22 and the third drive 23 in the first cutting part 201 to operate, and the coal and rock on the working face can be cut by the cutting head 24. Control the fourth drive 33 in the first loading part 301 to operate, and the cut coal and rock can be conveyed to the feed end 41 of the discharging part 4 through the star wheel 32. Finally, the coal and rock can be conveyed to the designated position through the discharging part 4 and the belt conveyor.

[0062] Control the second cutting part 202 to cut the coal and rock on the other side of the roadway, control the feed end 41 of the discharging part 4 to move to the second loading part 302, and the second loading part 302 conveys the coal and rock cut by the second cutting part 202 onto the discharging part 4.

[0063] Specifically, when it is necessary to cut the coal and rock on the working face on the other side of the roadway, first, the traveling part 1 can drive the second cutting part 202 to move to the position to be cut. At the same time, the feeding end 41 of the discharging part 4 can be controlled to move towards the second loading part 302 and dock with the second loading part 302. By controlling the operation of the second drive 22 and the third drive 23 in the second cutting part 202, the coal and rock on the working face can be cut by the cutting head 24. By controlling the operation of the fourth drive 33 in the second loading part 302, the cut coal and rock can be conveyed to the feeding end 41 of the discharging part 4 by the star wheel 32. Finally, the coal and rock can be conveyed to the designated position by the discharging part 4 and the belt conveyor.

[0064] The above coal mining method can be applied to multiple scenarios such as longwall working faces, shortwall working faces, and heading faces, improving the scope of use of the shearer. Moreover, it is not necessary to handle triangular coal and oblique cutting, and it is not necessary to straighten the scraper conveyor and hydraulic support, simplifying the coal mining (mining) process.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0069] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A cutting shearer, characterized in that, comprising: a traveling part, which can realize the self - movement of the shearer; a cutting part, which is arranged on the traveling part and is suitable for cutting coal and rock; a loading part, which is arranged on the traveling part and is suitable for collecting and conveying the coal and rock cut by the cutting part; a discharging part, which is arranged on the traveling part, and the conveying direction of the discharging part and the conveying direction of the loading part form an included angle. The discharging part has a feeding end and a discharging end. The feeding end of the discharging part is suitable for receiving the coal and rock conveyed by the loading part, and the discharging end of the discharging part is suitable for docking with a conveyor. At least part of the discharging part can be adjusted in pitch so that the height of the discharging end is adjustable; there are two cutting parts, which are respectively a first cutting part and a second cutting part, and there are two loading parts, which are respectively a first loading part and a second loading part. The first loading part is suitable for receiving the coal and rock cut by the first cutting part, and the second loading part is suitable for receiving the coal and rock cut by the second cutting part. The discharging part is arranged between the first loading part and the second loading part and is suitable for receiving the coal and rock conveyed by the first loading part and the second loading part; the discharging part includes: a first conveying section and a second conveying section. One end of the first conveying section forms the feeding end, the other end of the first conveying section is connected to one end of the second conveying section, and the other end of the second conveying section forms the discharging end. The second conveying section can be adjusted in pitch relative to the first conveying section; a telescopic drive, one end of which is rotatably connected to the traveling part, and the other end of which is rotatably connected to the second conveying section. The telescopic drive can be telescoped to drive the second conveying section to swing up and down relative to the first conveying section; the discharging part can swing and / or translate relative to the traveling part so that the feeding end can move towards the first loading part or the second loading part; when controlling the first cutting part to cut coal and rock, the feeding end of the discharging part can be controlled to dock with the first loading part. The first loading part conveys the collected coal and rock onto the discharging part and conveys it onto the conveyor through the discharging part; when controlling the second cutting part to cut coal and rock, the feeding end of the discharging part can be controlled to dock with the second loading part. The second loading part conveys the collected coal and rock onto the discharging part and conveys it onto the conveyor through the discharging part.

2. The cutting shearer according to claim 1, characterized in that, the discharging part can be translated along the length direction of the traveling part. The conveying directions of the first loading part and the second loading part are arranged oppositely and are both consistent with the length direction of the traveling part, and the conveying direction of the discharging part is consistent with the width direction of the traveling part.

3. The cutting shearer according to claim 1, characterized in that, the discharging part further includes a discharging conveying assembly, and the discharging conveying assembly includes: A first roller and a second roller, wherein the first roller is rotatably installed at the feeding end, the second roller is rotatably installed at the discharging end, and the second roller is slidable along the conveying direction of the second conveying section; A scraper chain that surrounds the outer peripheral sides of the first roller and the second roller, and the scraper chain is adapted to convey the coal and rock; A first drive that is provided in the first conveying section and is adapted to drive the first roller to rotate; A tensioning member that is provided between the second roller and the second conveying section to maintain the tensioned state of the scraper chain.

4. The cutting shearer according to claim 1, wherein, the cutting part includes an arm body, a second drive, a third drive and a cutting head. The arm body is rotatably connected to the traveling part. The second drive is provided on the arm body. The cutting head is connected to the second drive, and the second drive is adapted to drive the cutting head to rotate. The third drive is provided between the arm body and the traveling part, and the third drive is adapted to drive the arm body to pitch and swing; and / or, the loading part includes a shovel plate, a fourth drive and a star wheel. The shovel plate is provided on the traveling part. The fourth drive and the star wheel are both provided on the shovel plate. The star wheel is connected to the fourth drive, and the fourth drive is adapted to drive the star wheel to rotate. The star wheel is adapted to send the coal and rock on the shovel plate to the discharging part when rotating under the drive of the fourth drive.

5. The cutting shearer according to any one of claims 1-4, wherein, it includes an electrical system, a hydraulic system and a waterway system. The electrical system and the hydraulic system are adapted to provide power support and control for the cutting shearer, and the waterway system is adapted to provide cooling and spraying water for the cutting shearer.

6. A coal mining system, wherein, it includes a cutting shearer and a conveyor. The cutting shearer is the cutting shearer according to any one of claims 1-5, and the conveyor is docked with the discharging end of the discharging part.

7. A coal mining method based on the cutting shearer according to any one of claims 1-5, wherein, it includes the following steps: Controlling the first cutting part to cut the coal and rock on one side of the roadway, controlling the feeding end of the discharging part to move to the first loading part, and the first loading part conveys the coal and rock cut by the first cutting part onto the discharging part; Controlling the second cutting part to cut the coal and rock on the other side of the roadway, controlling the feeding end of the discharging part to move to the second loading part, and the second loading part conveys the coal and rock cut by the second cutting part onto the discharging part.

Images