Thin seam coal mining system with vertical feed

Abstract

The present application provides a kind of thin coal seam coal mining system of vertical feed, it includes coal winning machine, conveyer, roof support frame, traction device and controller, the cutting drum of coal winning machine includes cylinder, end cap and multiple cutting tooth, end cap has intermediate area and annular edge area, intermediate area is set away from coal winning face relative annular edge area;Conveyer is set to the side of coal winning machine away from coal winning face, and conveyer is equipped with guide rail, and coal winning machine is slidably connected with guide rail;Between roof support frame and conveyer, there is connected with propelling device, and propelling device is used to move conveyer and coal winning machine towards coal winning face;Traction device includes traction chain and traction driver, traction chain is connected to coal winning machine, and traction chain is drivingly connected between traction driver, to drive coal winning machine moves along guide rail;Controller is used to regulate and control the operation of coal winning machine, conveyer and traction device.The present application can improve coal mining efficiency and reduce production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, in particular to a vertical feeding thin coal seam mining system. BACKGROUND

[0002] In coal mining, the oblique cutting of the coal mining machine is a common way of coal mining, that is, when the coal mining machine runs to the end of the working face to prepare for the next cut, it is inclined to cut at the end of the coal mining working face. However, in the actual mining of thin coal seams (coal seams with a thickness of 0.8 to 1.7 meters), this process is time-consuming in terms of cutting, reciprocating movement, and cleaning of residual coal, which prolongs the coal mining cycle and makes it difficult to match the high-speed cutting demand. In related technologies, in order to achieve production goals, coal mining enterprises often increase the number of working faces, which can increase total output but requires more manpower, resources and financial resources, significantly increasing production costs.

[0003] The basic operation process of the oblique cutting of the coal mining machine is as follows: when the coal mining machine runs to the end of the working face to prepare for the next cut, it needs to be inclined to cut at the end of the coal mining working face. Specifically, the coal mining machine moves back and forth at the end, forms a cut through this movement, and cleans up the residual coal left after the last cut, thereby creating conditions for subsequent regular coal cutting operations. In theory, this process can complete the basic task of coal mining to some extent and meet the demand for coal mining under certain conditions.

[0004] However, in actual coal mining applications, the end oblique cutting process gradually exposes many significant problems, the most prominent of which is low efficiency. With the development of modern coal mining towards high speed and high efficiency, higher requirements are placed on the cutting speed of the coal mining machine. However, the existing end oblique cutting process, due to its own operating characteristics, takes a lot of time in cutting, reciprocating movement, and cleaning of residual coal, resulting in a prolonged coal mining cycle and an inability to match the demand for high-speed cutting.

[0005] In order to reluctantly complete the established production goals, coal mining enterprises often have to increase the number of working faces. This response measure, while increasing coal production to some extent, has more serious negative effects. On the one hand, increasing the number of working faces means investing more manpower, resources and financial resources, including more coal mining equipment, supporting materials and operating personnel, which undoubtedly significantly increases the production cost of the coal mine. On the other hand, more working faces mean a wider working area and more complex production management, which not only increases the difficulty of safety management, but also prolongs the overall operation time, making it more difficult to organize and coordinate coal mine production. SUMMARY

[0006] To solve the above technical problems, the embodiment of the present application provides a vertical feeding thin coal seam mining system, which can improve the mining efficiency, reduce the production cost, and meet the development needs of modern coal mine high-speed and efficient mining.

[0007] The vertical feeding thin coal seam mining system provided by the present application comprises:

[0008] A coal mining machine comprises a machine body and a cutting drum, the cutting drum is rotationally arranged on the machine body, the cutting drum comprises a drum body, an end cover and a plurality of cutting teeth, the plurality of cutting teeth are arranged on the drum body and the end cover, the end cover has a middle region and an annular edge region, and the middle region is arranged away from the coal mining face relative to the annular edge region;

[0009] A conveyor is arranged on the side of the coal mining machine away from the coal mining face, the conveyor is arranged to extend along the left-right direction of the coal mining face, the conveyor is provided with a guide rail, and the coal mining machine is slidingly connected with the guide rail;

[0010] A roof support frame is arranged on the side of the conveyor away from the coal mining machine, a propelling device is connected between the roof support frame and the conveyor, and the propelling device is used to move the conveyor and the coal mining machine towards the coal mining face;

[0011] A traction device comprises a traction chain and a traction driver, the traction chain is connected to the coal mining machine, and the traction chain is transmissionally connected with the traction driver to drive the coal mining machine to move along the guide rail;

[0012] A controller is electrically connected between the controller, the coal mining machine, the propelling device and the traction device, and the controller is used to regulate the operation of the coal mining machine, the conveyor and the traction device during the coal mining process.

[0013] In some embodiments, the coal mining machine further comprises a guide frame and a sliding frame, the traction chain is connected with the sliding frame, the guide frame is provided with a first guide groove, the first guide groove is slidingly connected with the guide rail, a first inner cavity is arranged in the guide rail, and the traction chain is movably arranged in the first inner cavity to drive the coal mining machine to move along the guide rail through the sliding frame.

[0014] In some embodiments, the guide frame comprises a mounting seat and a sliding block, the mounting seat is connected with the machine body, the sliding block is movable relative to the mounting seat along the height direction of the machine body, and the first guide groove is arranged at the bottom of the sliding block.

[0015] In some embodiments, the guide frame further comprises a guide hook, the guide hook being movable relative to the mounting base along the height direction of the machine body, the guide rail being provided with a second guide groove, the second guide groove being located on the side of the guide rail close to the machine body, the guide hook comprising a hook head, the hook head being in sliding connection with the second guide groove.

[0016] In some embodiments, the guide hook further comprises a root connected with the sliding block, the mounting base comprising a first sliding part extending along the height direction of the machine body, one of the root and the sliding block being in sliding connection with the first sliding part.

[0017] In some embodiments, the guide hook further comprises a limiting part, a top end of the limiting part being connected with a bottom end of the root, a bottom end of the limiting part being inclined to the direction of the mounting base and extending below the mounting base, so as to limit the movement of the guide hook along the height direction of the machine body.

[0018] In some embodiments, the thin coal seam mining system further comprises an inclination adjustment assembly, the inclination adjustment assembly further comprising a front-rear adjustment assembly and a left-right adjustment assembly, the front-rear adjustment assembly being arranged between the conveyor and the propulsion device, for adjusting the inclination angle of the conveyor in the up-down direction of the floor, so as to adjust the inclination angle of the coal mining machine in the front-rear direction of the floor;

[0019] The coal mining machine comprises a first sliding shoe arranged at the bottom of the machine body, the left-right adjustment assembly being arranged on the machine body and connected with the first sliding shoe, for adjusting the distance between the first sliding shoe and the machine body along the height direction of the machine body, so as to adjust the inclination angle of the machine body in the left-right direction of the floor.

[0020] In some embodiments, the conveyor has a conveying frame, the propulsion device further comprising a pushing jack and a connecting rod, the pushing jack being arranged on the top plate support frame, one end of the connecting rod being connected with the pushing jack, the other end of the connecting rod being rotatably connected with the conveying frame; the front-rear adjustment assembly comprises an angle jack, the angle jack being arranged above the connecting rod and the axis of the angle jack intersecting with the axis of the connecting rod, one end of the angle jack being rotatably connected with the machine body, the other end of the angle jack being rotatably connected with the connecting rod, the angle jack being used for adjusting the inclination angle of the conveyor in the front-rear direction of the floor.

[0021] In some embodiments, the left-right adjusting assembly comprises a first hydraulic cylinder and a first mounting base, the first hydraulic cylinder comprises a first fixed part and a first telescopic part, the first fixed part is connected with the machine body, the first telescopic part is telescopically connected with the first fixed part along the height direction of the machine body, the first telescopic part is connected with the first mounting base, and the first sliding shoe is arranged on the first mounting base.

[0022] In some embodiments, the coal mining machine comprises a protective cover connected with the machine body, the protective cover covers at least part of the first hydraulic cylinder, a third guide groove extending along the height direction of the machine body is defined between the protective cover and the machine body, at least part of the first hydraulic cylinder is arranged in the third guide groove, and the third guide groove is used to define the telescopic movement of the first hydraulic cylinder along the height direction of the machine body.

[0023] In some embodiments, the coal mining machine further comprises a hydraulic support assembly arranged on the machine body and connected with a third sliding shoe, the third sliding shoe corresponds to the first sliding shoe on the same side of the machine body in the width direction of the machine body, and the hydraulic support assembly is used to adjust the distance between the third sliding shoe and the machine body in the height direction of the machine body.

[0024] In some embodiments, the hydraulic support assembly comprises a second hydraulic cylinder and a second mounting base, the second hydraulic cylinder comprises a second fixed part and a second telescopic part, the second fixed part is connected with the machine body, the second telescopic part is telescopically connected with the second fixed part along the height direction of the machine body, the second telescopic part is connected with the second mounting base, and the third sliding shoe is arranged on the second mounting base.

[0025] In some embodiments, the machine body comprises a plurality of coal guiding areas penetrating through the machine body along the width direction of the machine body, and the plurality of coal guiding areas are arranged at intervals along the length direction of the machine body.

[0026] The coal mining machine further comprises a coal guiding part connected with the machine body, the coal guiding part comprises a coal guiding plate, the coal guiding plate comprises an arc-shaped body and a coal guiding connecting piece, one side of the arc-shaped body adjacent to the barrel body is a concave arc surface, the coal guiding connecting piece is connected with the arc-shaped body, the coal guiding connecting piece has a matching part connected with the machine body, the coal guiding plate can move towards or away from the barrel body relative to the machine body through the matching part to adjust the gap between the barrel body and the coal guiding plate, and the coal guiding part is a plurality of coal guiding parts corresponding to the plurality of barrel bodies.

[0027] In some embodiments, the coal guide part further comprises an adjusting plate and a first rotating shaft, the adjusting plate is connected with the arc-shaped body through the first rotating shaft, the adjusting plate and the coal guide connector are arranged on two sides of the arc-shaped body in the height direction of the machine body, and an axis of the first rotating shaft is parallel to the width direction of the machine body.

[0028] In some embodiments, the adjusting plate has an initial state and a rotating state, in the initial state, the adjusting plate is smoothly connected with the arc-shaped body adjacent to the side surface of the barrel, in the rotating state, the adjusting plate is rotated towards the barrel, and a rotating angle of the adjusting plate is less than or equal to 60°.

[0029] In some embodiments, the coal mining machine further comprises a waterway spraying assembly, the waterway spraying assembly comprises an adjusting part and a spraying head, the adjusting part has a water inlet for connecting to a water source, the adjusting part comprises a heat exchange part arranged in a lubricating oil circuit of the coal mining machine to cool lubricating oil in the lubricating oil circuit, and the spraying head is arranged on the barrel and connected with the adjusting part to form water mist on a cutting working surface where the barrel is located.

[0030] In some embodiments, the coal mining machine further comprises a top cover assembly and a lubricating assembly; the machine body comprises a first shell, a transmission shell and a third shell arranged in sequence, the first shell has a first cavity, the transmission shell has a transmission cavity, and the third shell has a third cavity; the top cover assembly comprises a plurality of cover plates, the first shell, the transmission shell and the third shell are provided with cover plates which are detachably connected, and the cover plates are used to open or seal the first cavity, the transmission cavity or the third cavity; the lubricating assembly is detachably arranged on the machine body, the lubricating assembly comprises a plurality of lubricating pumps, the cover plates are provided with liquid oil passages, the output ends of the lubricating pumps are in communication with the liquid oil passage inlets of the cover plates, and the liquid oil passage outlets of the cover plates are all directed towards the bottoms of the corresponding first cavity, the transmission cavity and the third cavity.

[0031] In some embodiments, the coal mining machine further comprises an oil injection nozzle, the cover plates are detachably connected with the oil injection nozzle, the oil injection nozzle is in communication with the liquid oil passage outlets, an outlet of the oil injection nozzle is directed towards the bottom of the machine body, and at least one cover plate is arranged on the transmission shell.

[0032] In some embodiments, the first shell, the transmission shell and the third shell are all provided with corresponding oil return channels in communication, the oil return channel outlets are in communication with the input ends of the lubricating pumps, and the oil return channel inlets are arranged at the bottoms of the corresponding first cavity, the transmission cavity or the third cavity.

[0033] And / or, the first shell, transmission shell and third shell top are provided with corresponding communicated oil outlet channels, and the oil outlet channel import is also communicated with the lubricating pump output end, and the oil outlet channel export is arranged at the top of the corresponding first cavity, transmission cavity or third cavity.

[0034] In some embodiments, the cutting drum includes a first cutting drum and a second cutting drum which are spaced apart from the machine body, the coal mining machine further includes a driving assembly and a transmission assembly which are connected with the machine body, the machine body further includes a second shell, the second shell has a second cavity, the lubricating pump is arranged in the second shell, and the driving assembly is arranged in the second cavity, the first cutting drum is at least partially arranged in the first cavity, the second cutting drum is at least partially arranged in the third cavity, and the transmission assembly is at least partially arranged in the transmission cavity, and the driving assembly, the first cutting drum, the second cutting drum and the transmission assembly are engaged with the power input end of the lubricating pump to provide power for the lubricating pump.

[0035] In conclusion, the vertical feeding thin coal seam mining system provided by the embodiment of the present application can drive the coal mining machine, the propulsion device and the traction device to work cooperatively through the controller to realize the vertical feeding coal mining work. That is, in the coal mining process, the controller can first drive the coal mining machine to vertically feed towards the coal mining working face through the propulsion device; after reaching the preset feeding depth, the controller will again issue an instruction to the traction device, so that the traction device drives the coal mining machine to move from one side to the other side of the guide rail at the coal mining working face; after the coal mining machine moves to the other side, the above steps of feeding and traction are repeated until the coal mining task is completed. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a working schematic diagram of the vertical feeding thin coal seam mining system provided by an embodiment of the present application at a coal mining working face.

[0037] Figure 2 is a structural schematic diagram of the vertical feeding thin coal seam mining system provided by an embodiment of the present application.

[0038] Figure 3 is a schematic diagram of the propulsion of the propulsion device in the vertical feeding thin coal seam mining system provided by an embodiment of the present application.

[0039] Figure 4 is a schematic diagram of the cutting operation of the cutting tooth drum at a coal mining working face in the vertical feeding thin coal seam mining system provided by an embodiment of the present application.

[0040] Figure 5 is a three-dimensional schematic diagram of the cutting tooth drum in the vertical feeding thin coal seam mining system provided by an embodiment of the present application.

[0041] Figure 6Figure 1 is an assembly diagram of the end cover and the cylinder body of the cutting tooth roller according to an embodiment of the present application.

[0042] Figure 7 Figure 2 is a partial enlarged view of A in figure 1. Figure 6

[0043] Figure 8 Figure 3 is a distribution diagram of the cutting tooth on the end cover in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0044] Figure 9 Figure 4 is a structure diagram of the cutting tooth in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0045] Figure 10 Figure 5 is a connection diagram of the coal mining machine and the conveyer in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0046] Figure 11 Figure 6 is a three-dimensional diagram of the coal mining machine in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0047] Figure 12 Figure 7 is an exploded diagram of part of the structure of the coal mining machine in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0048] Figure 13 Figure 8 is a structure diagram of the coal mining machine with upward inclination in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0049] Figure 14 Figure 9 is a structure diagram of the coal mining machine with downward inclination in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0050] Figure 15 Figure 10 is a structure diagram of the left-right adjusting assembly in the coal mining machine of the thin coal seam mining system with vertical feeding according to an embodiment of the present application. Figure 13

[0051] Figure 16 Figure 11 is a three-dimensional diagram of the coal mining machine in the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0052] Figure 17 Figure 12 is an exploded diagram of the left-right adjusting assembly in the coal mining machine of the thin coal seam mining system with vertical feeding according to an embodiment of the present application.

[0053] Figure 18

[0054] Figure 19 ​​​Figure 1 is an exploded view of a hydraulic support assembly of a coal mining machine in a vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0055] Figure 20 Figure 2 is a structural view of a coal mining area of the coal mining machine in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0056] Figure 21 Figure 3 is a structural view of the coal mining area of the coal mining machine in the vertical feeding thin seam coal mining system according to an embodiment of the present application, from another angle.

[0057] Figure 22 Figure 4 is a structural view of a coal guide plate in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0058] Figure 23 Figure 5 is a structural view of a coal guide connecting piece in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0059] Figure 24 Figure 6 is a pipeline schematic view of a waterway spray assembly in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0060] Figure 25 Figure 7 is a flow passage schematic view of the waterway spray assembly in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0061] Figure 26 Figure 8 is a structural view of the waterway spray assembly in the vertical feeding thin seam coal mining system according to an embodiment of the present application, inside a cutting drum.

[0062] Figure 27 Figure 9 is a schematic view of spray heads in the vertical feeding thin seam coal mining system according to an embodiment of the present application, arranged in the cutting drum.

[0063] Figure 28 Figure 10 is a structural view of the spray heads in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0064] Figure 29 Figure 11 is a pipeline schematic view of the waterway spray assembly in the vertical feeding thin seam coal mining system according to another embodiment of the present application.

[0065] Figure 30 Figure 12 is a structural view of a first flow passage in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0066] Figure 31 Figure 13 is a structural view of a machine body in the vertical feeding thin seam coal mining system according to an embodiment of the present application.

[0067] Figure 32 isFigure 31 A cross-sectional view of the C-C.

[0068] Figure 33 A cross-sectional view of the C-C. Figure 31 A cross-sectional view of the D-D.

[0069] Figure 34 A cross-sectional view of the C-C.

[0070] Figure 35 A cross-sectional view of the C-C.

[0071] Figure 36 A cross-sectional view of the C-C.

[0072] Figure 37 A cross-sectional view of the C-C.

[0073] Reference signs: 100, coal mining face; 200, floor;

[0074] 11, coal mining machine; 111, machine body; 1112, mounting groove; 112, cutting drum; 1121, drum body; 11211, support piece; 11212, clamping piece; 11213, connecting section; 11214, support section; 11215, first connecting part; 1122, end cover; 11221, middle region; 11222, annular edge region; 11223, annular plate; 11224, middle plate; 11225, second connecting part; 1123, cutting pick; 11231, tooth head; 11232, tooth seat; 1124, first cutting drum; 1125, second cutting drum; 113, guide frame; 1131, first guide groove; 1132, positioning seat; 11321, first sliding part; 11322, second groove; 1133, sliding block; 11331, second sliding part; 11332, first groove; 11333, reinforcing rib; 1134, guide hook; 11341, hook head; 11342, root; 11343, limiting part; 114, sliding frame; 1151, first sliding shoe; 1152, second sliding shoe; 1153, third sliding shoe; 116, coal guide area; 117, speed reducer; 1171, end disc;

[0075] 121, first tooth group; 122, second tooth group;

[0076] 13, conveyor; 131, guide rail; 1311, first inner cavity; 1312, second guide groove; 1313, second inner cavity; 132, conveying frame; 133, first pin shaft; 134, second pin shaft;

[0077] 15, roof support frame; 151, base;

[0078] 19, advancing device; 191, push jack; 192, connecting rod; 1921, straight section; 1922, inclined section; 1923, avoiding space;

[0079] 211, front and back adjusting assembly; 2111, angle jack; 2112, first limiting piece; 2113, second limiting piece; 212, left and right adjusting assembly; 2121, first hydraulic oil cylinder; 21211, first fixed part; 21212, first telescopic part; 2122, first mounting base; 21221, first seat body; 21222, first swing lever; 213, protective cover; 2131, third guide groove; 214, hydraulic support assembly; 2141, second hydraulic oil cylinder; 21411, second fixed part; 21412, second telescopic part; 2142, second mounting base; 21421, second seat body; 21422, second swing lever; 215, third mounting base; 2151, third seat body; 2152, rod body; 216, adapter rod;

[0080] 23, coal guiding part; 231, coal guiding plate; 2311, arc-shaped body; 2312, coal guiding connecting piece; 2313, matching part; 23131, first matching part; 23132, second matching part; 23133, rotation shaft; 23134, positioning hole; 23135, positioning shaft; 232, adjusting plate; 233, first rotation shaft;

[0081] 25, waterway spraying assembly; 251, adjusting piece; 2511, water inlet; 252, spraying head; 2521, first direction spout; 2522, second direction spout; 253, heat exchange part; 2531, second inlet; 2532, fourth outlet; 254, pressure regulating part; 2541, water inlet pipe; 2542, first outlet; 255, flow dividing part; 2551, first inlet; 2552, second outlet; 2553, third outlet; 2554, first flow dividing pipeline; 2555, second flow dividing pipeline; 2556, flow regulating valve; 256, spraying flow channel; 2561, fifth outlet; 2562, flow collecting port; 2563, first flow channel; 2564, second flow channel; 2565, third flow channel; 2566, connecting pipe; 2567, flow collector; 2568, first branch; 2569, second branch; 257, first pipeline; 258, second pipeline;

[0082] 259, pressure reducing valve; 2591, water outlet; 260, overflow valve; 261, overflow pipe; 262, pressure boosting pump; 264, on-off valve; 2651, first shaft section; 2652, second shaft section; 2653, third shaft section;

[0083] 2711, cover plate; 27111, liquid passage;

[0084] 2731, lubricating pump;

[0085] 281, first shell; 2811, first cavity; 282, transmission shell; 2821, transmission cavity; 283, third shell; 2831, third cavity; 284, oil injection nozzle; 285, oil return passage; 286, oil outlet passage; 287, second shell; 2871, second cavity; 288, cooling cavity;

[0086] 31, driving assembly;

[0087] 33, transmission assembly; 331, first transmission shaft; 332, transmission torque shaft; 333, second transmission shaft; 334, gear member; 3341, first transmission spur gear; 3342, second transmission spur gear; 3343, first transmission component; 3344, second transmission component; 3348, first gear. DETAILED DESCRIPTION

[0088] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the examples of embodiments are shown. The embodiments described below are examples intended to explain the present application, and are not to be understood as limiting the present application.

[0089] As Figures 1 to 37 shown, the present application provides a thin seam coal mining system with vertical feeding, which comprises a coal mining machine 11, a conveyor 13, a roof support frame 15, a traction device and a controller, the coal mining machine 11 comprises a machine body 111 and a cutting drum 112, the cutting drum 112 is rotatably arranged on the machine body 111, the cutting drum 112 comprises a drum body 1121, an end cover 1122 and a plurality of cutting teeth 1123, the plurality of cutting teeth 1123 are arranged on the drum body 1121 and the end cover 1122, the end cover 1122 has a middle region 11221 and an annular edge region 11222, and the middle region 11221 is arranged away from the coal mining face 100 relative to the annular edge region 11222.

[0090] The conveyor 13 is arranged on the side of the coal mining machine 11 away from the coal mining face 100, the conveyor 13 is arranged extending along the left-right direction of the coal mining face 100, the conveyor 13 is provided with a guide rail 131, and the coal mining machine 11 is slidingly connected with the guide rail 131. The roof support frame 15 is arranged on the side of the conveyor 13 away from the coal mining machine 11, and a propulsion device 19 is connected between the roof support frame 15 and the conveyor 13, the propulsion device 19 is used to push the conveyor 13 and the coal mining machine 11 towards the coal mining face 100.

[0091] The traction device includes a traction chain and a traction driver, the traction chain is connected with the coal mining machine 11, and the traction chain is in transmission connection with the traction driver to drive the guide rail 131 to move. The controller, the coal mining machine 11, the propulsion device 19 and the traction device are electrically connected, and the controller is used for regulating the operation of the coal mining machine 11, the conveyor 13 and the traction device in the coal mining process.

[0092] Specifically, the coal mining machine 11 is the key executive component of the system, the cutting drum 112 is rotatably arranged on the machine body 111, and can rotate at high speed under the driving of the motor, so as to cut the coal seam. A plurality of cutting teeth 1123 are arranged on the barrel body 1121 and the end cover 1122, which can cut the coal seam in all directions and without dead angle during rotation. Moreover, the middle region 11221 is arranged away from the coal mining working face 100 relative to the annular edge region 11222, which can improve the breaking efficiency of the coal seam when the cutting tooth 1123 vertically feeds along the vertical direction of the coal mining working face 100, and can avoid the cutting of the middle region 11221 always wearing the working face when the cutting drum 112 feeds along the working face operation axis of the coal mining working face 100, thereby reducing the wear of the middle region 11221 and prolonging the service life of the cutting drum.

[0093] The conveyor 13 is arranged on the side of the coal mining machine 11 away from the coal mining working face 100, and extends along the left-right direction of the coal mining working face 100. The guide rail 131 of the conveyor 13 is in sliding connection with the coal mining machine 11, so that the coal mining machine 11 can move smoothly and stably on the guide rail 131, and realize accurate feeding and retracting operation. At the same time, the guide rail 131 can also provide stable support for the coal mining machine 11, ensure the stability of the coal mining machine 11 during operation, reduce the faults and safety hazards caused by shaking, especially in the vertical feeding process.

[0094] The traction device is connected with the coal mining machine 11 through the traction chain. When the traction driver is started, the traction driver drives the traction chain to move, so that the traction chain drives the coal mining machine 11 to move along the guide rail 131. The propulsion device 19 is connected between the roof support frame 15 and the conveyor 13, which has strong pushing force and can steadily push the conveyor 13 and the coal mining machine 11 towards the coal mining working face 100. During the coal mining process, as the coal is continuously mined, the working face will gradually advance forward, and the propulsion device 19 can accurately control the advancing speed and distance of the conveyor 13 and the coal mining machine 11 according to the actual demand, to ensure the continuity and efficiency of the coal mining operation.

[0095] The controller can achieve real-time communication and data transmission with the coal mining machine 11, the propulsion device 19, and the traction device via electrical connection. During the coal mining process, the controller can precisely control the operation of the coal mining machine 11, the conveyor 13, and the traction device based on preset programs and various real-time collected data, such as coal seam thickness, the operating speed of the coal mining machine 11, and roof pressure. For example, the controller can automatically adjust the cutting depth and speed of the coal mining machine 11 according to changes in coal seam thickness; adjust the support strength of the roof support frame 15 in a timely manner according to the roof pressure; and rationally control the transport speed of the conveyor 13 and the propulsion speed of the traction device according to the coal mining progress. Through this intelligent control, the efficient and stable operation of the entire coal mining system is achieved, greatly improving coal mining efficiency and quality.

[0096] In summary, the vertical feeding thin coal seam mining system provided in this embodiment of the invention can drive the coal mining machine 11, the propulsion device 19, and the traction device to work together through the controller to achieve vertical feeding coal mining operations. That is, during the coal mining process, the controller can first drive the coal mining machine 11 to vertically feed towards the coal mining face 100 through the propulsion device 19; after reaching the preset feed depth, the controller will send a command to the traction device again, so that the traction device drives the coal mining machine 11 to move from one side of the coal mining machine 11 working face to the other side along the guide rail 131; after the coal mining machine 11 moves to the other side, the above steps of feeding and traction will be repeated until the coal mining task is completed.

[0097] like Figures 4 to 9 As shown, in this embodiment, the end cap 1122 includes an annular plate 11223 and an intermediate plate 11224. The annular plate 11223 forms an annular edge region 11222, and the intermediate plate 11224 forms an intermediate region 11221. The cylinder 1121 also includes a support member 11211 and a locking member 11212. The support member 11211 is connected to the inner peripheral wall of the cylinder 1121, the end cap 1122 is detachably connected to the support member 11211, the locking member 11212 is connected to the inner peripheral wall of the cylinder 1121, and the side wall of the intermediate plate 11224 abuts against the locking member 11212.

[0098] Specifically, the outer peripheral wall of the support member 11211 and the inner peripheral wall of the cylinder 1121 can be connected by welding, and the intermediate plate 11224 and the support member 11211 can be detachably connected by bolts or other connecting components. The locking member 11212 has a semi-arc structure, and the arc-shaped side peripheral wall of the locking member 11212 can be connected to the inner peripheral wall of the cylinder 1121 by welding. Then, the other side peripheral wall of the locking member 11212 abuts against the side wall of the intermediate plate 11224, so as to prevent the intermediate plate 11224 from rotating during use (during the vertical feed of the intermediate plate 11224), and also to distribute the force on the connecting screws on the support member 11211, reducing the overall force on the support member 11211.

[0099] It can be understood that the support 11211 is connected to the inner wall of the barrel 1121, which can provide additional support force, enhance the stability of the drum when rotating at high speed, and reduce vibration and deviation. The detachable connection design between the support 11211 and the intermediate plate 11224 makes it more convenient and fast to detach the intermediate plate 11224 when replacing or maintaining the cutting pick 1123, reduces the maintenance time, and improves the production efficiency.

[0100] In some embodiments, the support 11211 includes a connected connection section 11213 and a support section 11214, the connection section 11213 is fixedly connected with the inner peripheral wall of the barrel 1121, and the support section 11214 extends towards the center line direction of the barrel 1121, the support section 11214 is provided with a first connecting part 11215, and the intermediate plate 11224 is provided with a second connecting part 11225, the first connecting part 11215 and the second connecting part 11225 are adaptively connected. In this embodiment, the connection section and the support section are integrated.

[0101] Specifically, the connection section 11213 is fixedly connected with the inner peripheral wall of the barrel 1121, which is the initial fixed point of the support 11211, ensuring that the support 11211 is closely combined with the barrel 1121, and improving the stability of the whole drum. The support section 11214 extends towards the center line direction of the barrel 1121, increasing the length and strength of the support 11211, effectively dispersing the force in the cutting process, and reducing local stress concentration.

[0102] It can be understood that the support section 11214 can be adjusted in the vertical direction according to the actual working condition, so as to adapt to coal seams of different thickness and hardness. This flexibility helps to improve the adaptability and cutting efficiency of the drum of the coal mining machine 11.

[0103] Further, the support 11211 is annular, the support section 11214 defines a mounting area, the intermediate plate 11224 has a flange, at least part of the flange forms the second connecting part 11225, and at least part of the intermediate plate 11224 is placed in the mounting area.

[0104] Specifically, the profile of the outer peripheral wall of the support 11211 is adapted to the profile of the inner peripheral wall of the barrel 1121, so as to be closely connected with the barrel 1121, and the annular design of the support 11211 can provide uniform support force around the whole barrel 1121, enhancing the stability and rigidity of the drum. The mounting area is located at the central part of the support 11211, and the part of the intermediate plate 11224 is fitted in the mounting area.

[0105] Understandably, the mounting area defined by the support section 11214 provides a fixed space for the connection of the intermediate plate 11224, helping to maintain the precise position and stability of the intermediate plate 11224. The flange design of the intermediate plate 11224 increases the connection area of ​​the intermediate plate 11224, improving the connection strength with the support member 11211. At least a portion of the flange forms a second connection portion 11225, which helps to achieve a quick and secure connection between the intermediate plate 11224 and the support member 11211.

[0106] It should be noted that the first connecting part 11215 and the second connecting part 11225 can be a snap-fit ​​structure or a pin structure that cooperates with each other. Of course, the first connecting part 11215 and the second connecting part 11225 also need to be fixed by bolts or screws to improve the connection strength between the support member 11211 and the intermediate plate 11224.

[0107] like Figure 5 and Figure 8 As shown, in some embodiments, the end cap 1122 may be provided with a first tooth group 121 and a second tooth group 122. The first tooth group 121 is provided on the annular plate 11223, and the second tooth group 122 is provided on the intermediate plate 11224. There are multiple first tooth groups 121, and the multiple first tooth groups 121 are arranged at equal angular intervals around the rotation axis 23133 of the cylinder 1121. Each first tooth group 121 includes multiple cutting teeth 1123.

[0108] Specifically, the combined design of the first tooth group 121 and the second tooth group 122 can be optimized according to the characteristics of the coal seam and the cutting requirements to improve the performance of the coal mining machine 11 drum.

[0109] Understandably, the cutting teeth 1123 on the end cap 1122 can be divided into two groups, allowing for optimized design to suit the hardness and layered structure of different coal seams. For example, the first tooth group 121 can be designed to be more suitable for cutting harder coal seams, facilitating feed cutting using the first tooth group 121. It also allows for more even distribution of force during the cutting process, reducing the problem of individual cutting teeth 1123 bearing excessive loads, thereby reducing the risk of wear and breakage of the cutting teeth 1123. Furthermore, the type and layout of the cutting teeth 1123 in the first tooth group 121 and the second tooth group 122 can be adjusted according to the different characteristics of the coal seam, improving the adaptability of the drum.

[0110] In some embodiments, the cutting teeth 1123 in the plurality of first tooth groups 121 are spaced apart on the annular plate 11223 of the end cap 1122 along the radial direction of the cylinder 1121.

[0111] It can be understood that the interval angle between two adjacent first tooth groups 121 is 120°, so that the plurality of first tooth groups 121 are uniformly arranged on the annular plate 11223. For example, the first tooth group 121 includes three cutters 1123, one of which is closer to the center line of the cylinder 1121 than the other two, forming an interval arrangement structure, so that the cutting trajectories of the three cutters 1123 in the cutting process are different. Figure 8 The dashed line shown in the middle is the cutting trajectory corresponding to each cutter 1123.

[0112] That is, because the cutters 1123 are at different radial positions of the cylinder 1121, the mutual interference and collision between the cutters 1123 can be reduced, thereby reducing the wear of the cutters 1123. And according to the actual working condition, by adjusting the position of the cutter 1123, the coal seam of different hardness and stratification can be optimized and designed, and the adaptability of the roller is improved.

[0113] In some embodiments, a plurality of second tooth groups 122 are provided, and the plurality of second tooth groups 122 are arranged at intervals along the radial direction of the cylinder 1121, and each second tooth group 122 contains a plurality of cutters 1123.

[0114] It can be understood that the plurality of cutters 1123 in the second tooth group 122 are arranged at intervals along the circumference of the center line of the cylinder 1121, and two adjacent second tooth groups 122 are arranged at intervals along the radial direction of the cylinder 1121, so that the cutters 1123 in the second tooth group 122 are distributed in a state of spreading outward from the center line of the cylinder 1121.

[0115] That is, the interval arrangement of the plurality of second tooth groups 122 along the radial direction helps to achieve uniform cutting of the coal seam and reduce the problem of uneven cutting. Of course, the layout of the second tooth group 122 and the type of the cutter 1123 can be adjusted according to different coal seam characteristics and cutting requirements to improve the adaptability of the roller.

[0116] In some embodiments, in two adjacent second tooth groups 122, in the circumferential direction along the center line of the cylinder 1121, there is an included angle between the line connecting the two adjacent cutters 1123 and the center line of the cylinder 1121.

[0117] It can be understood that, taking one second tooth group 122 located at the innermost circle of the middle plate 11224 and its adjacent second tooth group 122 as an example, each cutter 1123 in the second tooth group 122 at the innermost circle is arranged at intervals along the circumference of the center line of the cylinder 1121, and the cutters 1123 in the adjacent second tooth group 122 are arranged in a staggered manner compared with each cutter 1123 in the second tooth group 122 at the innermost circle.

[0118] That is, in the two adjacent second tooth groups 122, in the circumferential direction along the center line of the cylinder 1121, the angle between the connecting line of the two adjacent cutting teeth 1123 and the center line of the cylinder 1121 exists, which makes the cutting teeth 1123 form staggered layout during cutting, helps to optimize the cutting path, and improves the cutting efficiency and coal quality.

[0119] In other words, the staggered layout of the cutting teeth 1123 can reduce vibration and noise during cutting, and improve the running stability of the drum. Through staggered layout, direct collision and wear between adjacent cutting teeth 1123 can be reduced, and the service life of the cutting teeth 1123 can be prolonged. The angle design allows the layout of the cutting teeth 1123 to be adjusted according to different characteristics of the coal seam, improving the adaptability of the drum to various coal seams. By dispersing the positions of the cutting teeth 1123, the stress generated during cutting can be more evenly distributed on the drum, reducing local stress concentration.

[0120] As shown in Figure 9 , in some embodiments, the cutting tooth 1123 includes a tooth seat 11232 connected with the cylinder 1121 and a tooth head 11231 in clearance fit with the tooth seat 11232, and the extension direction of the tooth head 11231 and the extension direction of the tooth seat 11232 have a cutting angle, which is greater than or equal to 45° and less than or equal to 52°.

[0121] It can be understood that the cutting angle is γ, 45°≤γ≤52°. That is, the design of the cutting angle can affect the cutting effect of the cutting tooth 1123, and the cutting angle of 45° to 52° helps to improve the cutting efficiency of the cutting tooth 1123 and the penetration of the coal seam. A reasonable cutting angle can reduce the wear of the tooth head 11231 during cutting, prolonging the service life of the tooth head 11231.

[0122] As shown in Figure 10 , Figure 11 and Figure 12 , in some embodiments, the coal mining machine 11 further includes a guide frame 113 and a sliding frame 114, the traction chain is connected with the sliding frame 114, the guide frame 113 is provided with a first guide groove 1131, the first guide groove 1131 is in sliding connection with the guide rail 131, the guide rail 131 is provided with a first inner cavity 1311, and the traction chain is movably arranged in the first inner cavity 1311 to drive the coal mining machine 11 to move along the guide rail 131 through the sliding frame 114.

[0123] For the convenience of description, the direction along the working face operation axis of the coal mining face 100 is set as the length direction of the coal mining machine 11 or the left-right direction of the coal mining face 100, the horizontal direction perpendicular to the working face operation axis is set as the left-right direction of the coal mining machine 11 or the front-rear direction of the coal mining face 100, and the vertical direction perpendicular to the working face operation axis is set as the height direction of the coal mining machine 11 or the up-down direction of the coal mining face 100.

[0124] Specifically, the guide frame 113 and the sliding frame 114 can be arranged at the rear side of the machine body 111, i.e., at the side of the machine body 111 away from the coal mining face 100. The guide rail 131 extends along the working face operation axis, the first guide groove 1131 of the guide frame 113 is in sliding fit with the guide rail 131 on the conveyer 13, thereby realizing accurate guidance and stable support of the sliding direction of the coal mining machine 11. Meanwhile, the sliding frame 114 is fixedly connected with the traction chain, so that the traction force of the traction driver can be transmitted to the coal mining machine 11 through the traction chain, thereby effectively driving the whole coal mining machine 11 to move along the guide rail 131.

[0125] Further, the traction chain is movably arranged in the first inner cavity 1311 in the guide rail 131, and can be hidden in the guide rail 131, thereby forming a closed or semi-closed transmission path, effectively preventing impurities such as coal dust and gravel from entering the transmission area, reducing the risk of chain wear and jamming, improving the transmission reliability and service life, and improving the compactness and safety of the overall structure, avoiding interference of external foreign matters with the operation, and ensuring stable walking of the coal mining machine 11 in harsh working conditions.

[0126] The inventors have found that, in the related technology of the traction mechanism of the coal mining machine 11, the traction chain and the traction hole will generate violent impact and vibration during meshing and disengaging, resulting in large operation noise and aggravating the fatigue damage of the equipment. In addition, since the traction mechanism is intermittent meshing transmission, the motion stability of the coal mining machine 11 is poor, and the coal cutting quality is affected.

[0127] The present application realizes guidance through the sliding fit between the first guide groove 1131 and the guide rail 131, and the sliding frame 114 is slidably arranged in the first inner cavity 1311. The whole movement process is continuous contact without meshing action, which helps to eliminate the impact and vibration caused by periodic meshing and disengaging in the related technology, reduces the noise level of the coal mining machine 11 during operation compared with the related technology, improves the underground operation environment, reduces the dynamic impact load on the machine body 111, the guide rail 131 and the related structure, effectively alleviates the fatigue damage of the equipment, and improves the structural reliability and service life of the whole machine.

[0128] Secondly, the present application realizes continuous traction through the fixed connection of the traction chain and the sliding frame 114, and the traction force is output stably and continuously without intermittent mutation. Meanwhile, the guide frame 113 provides stable sliding support, and the two work together to ensure that the coal winning machine 11 realizes uniform and stable reciprocating movement on the guide rail 131, fundamentally avoiding the "creeping" and shaking phenomenon caused by the meshing gap in the traditional system, improving the walking accuracy and running stability, and being conducive to realizing stable and high-quality continuous coal cutting operation.

[0129] Therefore, the vertical feeding thin coal seam mining system provided by the embodiment of the present application has the advantages of stable guidance, continuous traction, low noise, wear resistance, reliable operation and the like.

[0130] In some embodiments, the guide frame 113 includes a positioning seat 1132 and a sliding block 1133, the positioning seat 1132 is connected with the machine body 111, the sliding block 1133 is movably positioned along the height direction of the machine body 111 relative to the positioning seat 1132, and the first guide groove 1131 is arranged at the bottom of the sliding block 1133.

[0131] Specifically, the positioning seat is fixedly connected with the machine body 111 of the coal winning machine 11, ensuring the stability and reliability of the entire guide frame 113. The sliding block 1133 is movably arranged in the positioning seat along the height direction of the machine body 111 (i.e. the height direction of the coal winning machine 11), forming an adjustable mechanism, so that the sliding block 1133 can move and adjust within a certain range relative to the positioning seat 1132. When the working face is uneven or the guide rail 131 is installed with deviation, the sliding block 1133 can automatically adapt to the position change of the guide rail 131, having a buffering and self-adaptive adjusting effect, maintaining the stable sliding connection between the first guide groove 1131 and the guide rail 131, and helping to improve the running stability of the coal winning machine 11 under complex working conditions.

[0132] Optionally, the positioning seat 1132 and the machine body 111 of the coal winning machine 11 can be connected by bolts, buckles or welding.

[0133] In some embodiments, the guide frame 113 further includes a guide hook 1134, the guide hook 1134 is movably positioned along the height direction of the machine body 111 relative to the positioning seat 1132, the guide rail 131 is provided with a second guide groove 1312, the second guide groove 1312 is located on the side of the guide rail 131 close to the machine body 111, and the guide hook 1134 includes a hook head 11341, the hook head 11341 is in sliding connection with the second guide groove 1312.

[0134] Specifically, the hook head 11341 of the guide hook 1134 is arranged in a hook shape to be hooked in the second guide groove 1312, so that the hook head 11341 can be at least partially embedded in the second guide groove 1312, not only achieving accurate guidance of the coal mining machine 11 moving along the working face operation axis, but also providing reliable limiting constraint in the up-down direction of the coal mining working face 100, preventing the coal mining machine 11 from jumping up, derailing and other safety hazards due to vibration, impact or inclined working conditions during operation, and significantly improving the stability and safety of the system.

[0135] Moreover, the guide hook 1134 and the positioning seat form an adjustable connection structure, so that the guide hook 1134 can be displaced relative to the positioning seat in the up-down direction of the coal mining working face 100, so that the guide hook 1134 has a certain self-adaptive adjustment capability. When the coal mining machine 11 travels to a section where the guide rail 131 has a height deviation, is not installed flat, or is locally deformed, the guide hook 1134 can float up and down synchronously with the contour of the guide rail 131, ensuring that the hook head 11341 is always stably embedded in the second guide groove 1312 and maintains a sliding connection state.

[0136] In the embodiment, the guide hook 1134 and the sliding block 1133 both have self-adaptive adjustment capability in the up-down direction of the coal mining working face 100, and the two work together to make the guide frame 113 have good adaptability, stability and reliability while realizing multi-degree-of-freedom constraint, further optimizing the walking performance of the coal mining machine 11 under long-distance, high-load and variable working conditions.

[0137] In some embodiments, the guide hook 1134 further includes a root 11342 connected with the sliding block 1133, and the positioning seat 1132 includes a first sliding part 11321 extending in the height direction of the machine body 111, and one of the root 11342 and the sliding block 1133 is in sliding connection with the first sliding part 11321.

[0138] Specifically, the root 11342 of the guide hook 1134 is fixedly connected with the sliding block 1133, so that the guide hook 1134 moves synchronously with the sliding block 1133, the first sliding part 11321 of the positioning seat 1132 extends in the up-down direction of the coal mining working face 100 (the height direction of the machine body 111), and one of the root 11342 and the sliding block 1133 of the guide hook 1134 is provided with a corresponding sliding structure to form a sliding fit with the first sliding part 11321, so that the guide hook 1134 and the sliding block 1133 can move synchronously in the up-down direction relative to the positioning seat 1132.

[0139] Optionally, a protrusion is arranged on the root 11342 or the sliding block 1133, and the first sliding part 11321 is a sliding groove, and the protrusion is in sliding fit in the sliding groove.

[0140] That is, the present application can adapt to the height change or installation error of the guide rail 131 by slidingly connecting one of the root 11342 or the slider 1133 with the first sliding part 11321, so that the hook head 11341 of the guide hook 1134 and the slider 1133 both have up and down floating capability, avoid jamming, ensure smooth sliding, and at the same time keep stable positioning of the guide rail 131, improve the stability and reliability of the running of the coal mining machine 11.

[0141] Further, the slider 1133 is provided with two second sliding parts 11331 which are spaced apart, and the two first sliding parts 11321 correspond to the two second sliding parts 11331 one by one, and the first groove 11332 is defined between the two second sliding parts 11331, and the root 11342 is arranged in the first groove 11332 and fixedly connected with the slider 1133.

[0142] Among them, the two first sliding parts 11321 are spaced apart to define a second groove 11322, and the second sliding part 11331 and the root 11342 are slidably arranged in the second groove 11322.

[0143] The slider 1133 is provided with two second sliding parts 11331 which are spaced apart, and the first groove 11332 is formed between the two second sliding parts 11331, and the root 11342 of the guide hook 1134 is located in the first groove 11332 and fixedly connected with the slider 1133, realizing integrated assembly of the guide hook 1134 and the slider 1133. At the same time, the first sliding part 11321 on the positioning seat is provided with two first sliding parts 11321 which are spaced apart to form a second groove 11322, and the width of the first groove 11332 is smaller than the width of the second groove 11322, and the second sliding part 11331 and the root 11342 of the guide hook 1134 both extend into the second groove 11322, and the two second sliding parts 11331 are matched with the two first sliding parts 11321 one by one, so that the slider 1133 and the guide hook 1134 fixed therewith can slide relative to the positioning seat in the up and down direction as a whole.

[0144] That is, the present application forms a double-sided sliding guide mechanism through the first sliding part 11321 and the second sliding part 11331, which can make the movement stable and the guidance accurate, effectively prevent jamming or eccentric wear, improve the stability and carrying capacity during the up and down adjustment, so that the first guide groove 1131 and the hook head 11341 of the guide hook 1134 can adapt to the height change of the guide rail 131, ensure the continuous and stable cooperation with the guide rail 131, and improve the reliability and adaptability of the running of the coal mining machine 11.

[0145] Secondly, the root 11342 of the guide hook 1134 is arranged in the first groove 11332, and the guide hook 1134 and the second sliding part 11331 are nested in the second groove 11322 of the positioning seat, so that the compact stacking arrangement of multiple parts is realized, the space is effectively utilized, the occupied size is reduced, the overall structure of the guide frame 113 is more compact, and installation and arrangement in the limited space of the coal mining machine 11 are facilitated.

[0146] In some embodiments, the guide hook 1134 further comprises a limiting part 11343, the top end of the limiting part 11343 is connected with the bottom end of the root 11342, and the bottom end of the limiting part 11343 is inclined to the direction in which the positioning seat is located and extends below the positioning seat, so as to limit the movement of the guide hook 1134 in the height direction of the machine body 111.

[0147] Specifically, the limiting part 11343 is arranged between the root 11342 and the hook head 11341, the top end of the limiting part 11343 is linear to be connected with the root 11342, and the bottom end of the limiting part 11343 is inclined and extends downward below the positioning seat, forming a downward protruding shoulder structure. When the guide hook 1134 moves upward relative to the positioning seat in the up-down direction, the inclined part of the limiting part 11343 gradually approaches the bottom of the positioning seat until the limiting part 11343 abuts against the positioning seat, thereby limiting the guide hook 1134 from continuing to move upward, realizing mechanical limiting of the floating stroke of the guide hook 1134; and while ensuring that the guide hook 1134 has certain up-down adjusting capability, the guide hook 1134 can be prevented from floating upward excessively to be separated from the positioning seat, thereby avoiding derailment of the coal mining machine 11.

[0148] In some embodiments, two guide frames 113 and two sliding frames 114 are arranged, the two sliding frames 114 are arranged at intervals along the length direction of the machine body 111, and the two guide frames 113 are arranged between the two sliding frames 114.

[0149] Among them, the two guide frames 113 are arranged between the two sliding frames 114, forming a three-point support structure, the two sliding frames 114 provide front and rear two-point walking supports, and the two guide frames 113 in the middle provide middle guiding and bearing, which can effectively disperse stress and improve the stability and anti-overturning capability of the coal mining machine 11 in operation.

[0150] Meanwhile, the central arrangement of the guide frame 113 is conducive to balancing the stress on the front and rear sides, reducing eccentric wear, ensuring reliable sliding cooperation of the coal mining machine 11 and the guide rail 131, and the overall structural layout is reasonable, the space utilization rate is high, and the adaptability and operation reliability of the coal mining machine 11 under complex working conditions are improved on the premise of ensuring strength and stability.

[0151] In some embodiments, the machine body 111 is provided with a mounting groove 1112, and the positioning seat is detachably arranged in the mounting groove 1112. When the guide frame 113 needs to be maintained or is worn, the positioning seat can be directly detached from the mounting groove 1112 without disassembling the machine body 111, so that the maintenance efficiency is high and the downtime is short. In addition, the positioning seat can be embedded in the mounting groove 1112, so that the structure is compact, the local space of the machine body 111 is fully utilized, the additional space occupied by the outward protruding structure is avoided, and the compactness of the overall layout is facilitated.

[0152] Optionally, the positioning seat can be fixedly arranged in the mounting groove 1112 by bolts or buckle structures.

[0153] In some embodiments, the side of the sliding block 1133 away from the positioning seat is provided with reinforcing ribs 11333, and a plurality of reinforcing ribs 11333 are arranged at intervals. These reinforcing ribs 11333 can enhance the overall rigidity and structural strength of the sliding block 1133, effectively prevent the sliding block 1133 from deforming when bearing a large load or impact, thereby improving the reliability of the guide frame 113, and further ensuring the normal and stable operation of the coal mining machine 11.

[0154] In some embodiments, the guide rail 131 is provided with a second inner cavity 1313, the second inner cavity 1313 is arranged below the first inner cavity 1311, and the two ends of the second inner cavity 1313 are communicated with the first inner cavity 1311 to form an annular cavity. The traction chain is rotatably arranged in the annular cavity, so that a closed circulating chain link channel is formed, and the traction chain rotates in the annular cavity.

[0155] The annular cavity realizes automatic guiding and supporting of the traction chain, reduces the risk of loosening and chain jumping, and improves the running stability. At the same time, the annular cavity can also prevent coal dust and sundries from entering the inside of the chain link channel, prolong the maintenance period, and ensure that the coal mining machine 11 moves stably, continuously and efficiently along the guide rail 131. In addition, the driving mode has a simple structure and reliable transmission, and can realize smooth traction.

[0156] Further, the traction driver can be a sprocket or a driving motor and the like, which is in transmission connection with the traction chain to transmit power to the traction chain, so as to drive the sliding frame 114 and the whole coal mining machine 11 to move reciprocatingly along the guide rail 131.

[0157] As shown in FIG. 1, Figures 13 to 19 In some embodiments, the vertical thin seam coal mining system further comprises an inclination adjusting assembly, and the inclination adjusting assembly further comprises a front-rear adjusting assembly 211 and a left-right adjusting assembly 212. The front-rear adjusting assembly 211 is arranged between the conveyor 13 and the propulsion device 19, and is used to adjust the inclination angle of the conveyor 13 in the front-rear direction of the floor 200, so that the conveyor 13 drives the coal mining machine 11 to adjust the inclination angle in the front-rear direction of the floor 200 (i.e. the front-rear direction of the coal mining face 100).

[0158] The coal mining machine 11 comprises a first sliding shoe 1151 arranged at the bottom of the machine body 111, and the left-right adjusting assembly 212 is arranged on the machine body 111 and connected with the first sliding shoe 1151, and is used for adjusting the distance between the first sliding shoe 1151 and the machine body 111 in the height direction of the machine body 111, so as to adjust the inclination angle of the machine body 111 in the left-right direction of the floor 200.

[0159] Specifically, the front-rear adjusting assembly 211 is arranged between the conveyer 13 and the propulsion device 19, and is used for adjusting the inclination angle of the conveyer 13 in the front-rear direction of the floor 200 (i.e. the front-rear direction of the coal mining face 100), so as to make the conveyer 13 drive the coal mining machine 11 to adjust the inclination angle in the front-rear direction of the floor 200 (i.e. the front-rear direction of the coal mining face 100). Figure 15

[0160] The coal mining machine 11 further comprises a second sliding shoe 1152, and the first sliding shoe 1151 and the second sliding shoe 1152 are arranged on the machine body 111 in the length direction of the machine body 111. The left-right adjusting assembly 212 adjusts the inclination angle of the machine body 111 in the left-right direction of the floor 200 (i.e. the left-right direction of the coal mining face 100) by adjusting the distance between the first sliding shoe 1151 and the machine body 111 in the height direction of the machine body 111. Figure 16

[0161] The cutting drum 112 comprises a first cutting drum 1124 and a second cutting drum 1125 arranged in the length direction of the machine body 111. In use, the propulsion device 19 pushes the conveyer 13 and the coal mining machine 11 to move forward in the front-rear direction of the floor 200, so as to ensure that the coal mining machine 11 can continuously perform the coal mining operation. When the coal mining machine 11 is used for mining coal, the first sliding shoe 1151 and the second sliding shoe 1152 are arranged on the coal mining machine 11 to slide in the left-right direction of the floor 200.

[0162] When the coal seam floor 200 is inclined in the front-rear direction, the front-rear adjusting assembly 211 can adjust the inclination angle of the conveyer 13 according to the inclination degree of the floor 200, so as to adjust the coal mining angle of the coal mining machine 11 in the front-rear direction of the floor 200, and ensure that the cutting drum 112 can better cover the height of the coal seam.

[0163] ​​When the coal mining machine 11 moves on the working face operation axis (the left-right direction of the floor 200) and encounters the inclination of the floor 200 in the left-right direction, the left-right adjusting assembly 212 can be telescoped according to the inclination angle of the floor 200 in the left-right direction, so as to adjust the height of the first sliding shoe 1151, so that the connecting line between the first cutting drum 1124 and the second cutting drum 1125 can adapt to the inclination angle of the floor 200 in the left-right direction, and ensure that the two cutting drums 112 (i.e. the first cutting drum 1124 and the second cutting drum 1125) of the coal mining machine 11 can completely cover the height of the coal seam for coal cutting, avoiding the problem that part of the coal seam cannot be cut due to the inclination of the floor 200 in the left-right direction, and improving the coal mining efficiency.

[0164] The inclination angle of the coal mining machine 11 in the front-rear direction of the floor 200 is adjusted by the front-rear adjusting assembly 211, so as to adapt to the inclination of the floor 200 in the front-rear direction, which can reduce the loss of the coal seam caused by the inclination of the floor 200, thereby improving the coal mining efficiency. Meanwhile, the inclination angle of the machine body 111 in the left-right direction of the floor 200 is adjusted by the left-right adjusting assembly 212, so as to adapt to the inclination of the floor 200 in the left-right direction, which can ensure that the two cutting drums 112 can always effectively cover the height of the entire coal seam, reduce the loss of the coal seam, and improve the coal mining efficiency. That is to say, the coal mining machine 11 can adapt to different inclination conditions of the floor 200, so that the cutting drums 112 can better cover the coal seam, reduce the waste of coal resources, enhance the adaptability of the machine to different coal seam conditions, and improve the versatility and practicality of the machine.

[0165] In some embodiments, the conveyer 13 has a conveying frame 132, the propulsion device 19 further includes a pushing jack 191 and a connecting rod 192, the pushing jack 191 is arranged on the roof support frame 15, one end of the connecting rod 192 is connected with the pushing jack 191, and the other end of the connecting rod 192 is rotationally connected with the conveying frame 132. The front-rear adjusting assembly 211 includes an angle jack 2111, the angle jack 2111 is arranged above the connecting rod 192 and the axis of the angle jack 2111 intersects with the axis of the connecting rod 192, one end of the angle jack 2111 is rotationally connected with the machine body 111, and the other end of the angle jack 2111 is rotationally connected with the connecting rod 192, and the angle jack 2111 is used for adjusting the inclination angle of the conveyer 13 in the front-rear direction of the floor 200.

[0166] Specifically, when the angle jack 2111 is telescoped, it will push the connecting rod 192 to rotate around the pivot point, so as to change the inclination angle of the conveyer 13 and the coal mining machine 11. As shown in Figure 7 When the angle jack 2111 is contracted, it will cause the conveyer 13 and the coal mining machine 11 to incline upward. As shown in Figure 8As shown, when the angle jack 2111 is extended, the conveyer 13 and the coal cutter 11 will be inclined downward.

[0167] That is, the present application can control the extension of the angle jack 2111 according to the inclination of the floor 200, dynamically adjust the inclination angle of the conveyer 13, and ensure that the cutting drum 112 can always effectively cover the coal seam, so that the inclination angle adjustment of the conveyer 13 is more flexible and can quickly adapt to the change of the floor 200. Moreover, the inclination angle is adjusted by the extension of the angle jack 2111, which is relatively simple to operate, reduces the operation difficulty and labor intensity.

[0168] In some embodiments, the connecting rod 192 comprises a straight segment 1921 and an inclined segment 1922, the straight segment 1921 is connected with the push jack 191 and is parallel to the base 151 of the roof support frame 15, the inclined segment 1922 is connected with the conveying frame 132 and gradually inclines upward along the roof support frame 15 towards the conveyer 13, and the angle jack 2111 is connected with the straight segment 1921.

[0169] As shown in Figure 13 , Figure 14 and Figure 15 , the straight segment 1921 is connected with the push jack 191 and is parallel to the base 151 of the roof support frame 15, which ensures that the pushing force of the push jack 191 can be effectively transmitted to the connecting rod 192. The inclined segment 1922 is connected with the conveying frame 132 of the conveyer 13 and gradually inclines upward along the roof support frame 15 towards the conveyer 13.

[0170] The angle jack 2111 is connected with the straight segment 1921 of the connecting rod 192, so that when the angle jack 2111 is extended or retracted, the conveying frame 132 of the conveyer 13 and the coal cutter 11 can rotate around the connection point of the inclined segment 1922 and the conveying frame 132, so as to change the inclination angle of the coal cutter 11 and the conveying frame 132. Moreover, the inclined segment 1922 can make the connecting rod 192 better adapt to the front and rear inclination of the floor 200, so that the coal cutter 11 can maintain a good working state on the floor 200 with different inclinations. The design of the inclined segment 1922 inclining upward along the roof support frame 15 helps to improve the stability of the coal cutter 11 during the coal mining process, especially when the floor 200 is inclined greatly. The design of the straight segment 1921 being parallel to the base 151 of the roof support frame 15 ensures that the pushing force of the push jack 191 can be more directly and effectively transmitted to the coal cutter 11, improves the efficiency, and thus better adapts to the inclination of the floor 200, reduces unnecessary energy consumption, and improves the overall energy efficiency of the coal cutter 11.

[0171] Optionally, the front and rear adjustment assembly 211 can adjust the inclination angle of the coal mining machine 11 in the front and rear direction of the floor 200, which can be set to -20° to 20°. For example, 10°, 15° or 20°. The included angle between the straight section 1921 and the inclined section 1922 is 10° to 20°, which can not only provide sufficient adjustment range to adapt to the inclination of the floor 200, but also maintain the stability of the structure and the convenience of operation. A smaller included angle helps to maintain the structural strength of the connecting rod 192 and prevent bending or breaking during work due to excessive angle. This angle range makes it more convenient for the operator to adjust the inclination angle of the coal mining machine 11, without the need for complex mechanical devices or excessive operation steps.

[0172] Optionally, the conveying frame 132 is provided with a first connecting hole, and the inclined section 1922 is provided with a second connecting hole, and the inclined section 1922 and the conveying frame 132 are connected through a first pin shaft 133 penetrating the first connecting hole and the second connecting hole.

[0173] As shown in Figure 15 , the sizes of the first connecting hole and the second connecting hole are adapted to the first pin shaft 133 to ensure that the first pin shaft 133 can smoothly penetrate, thereby allowing the inclined section 1922 to rotate around the first pin shaft 133 within a certain range. That is, by controlling the extension and retraction of the angle jack 2111, the controller can change the angle between the inclined section 1922 and the conveying frame 132, thereby adjusting the coal mining angle of the coal mining machine 11 to adapt to the front and rear inclination of the floor 200.

[0174] In addition, the first pin shaft 133 also allows the conveying frame 132 to rotate flexibly relative to the inclined section 1922, thereby quickly adapting to changes in the floor 200 and avoiding complex mechanical structures, making the overall design more concise and facilitating manufacturing and maintenance. Even if a larger inclination of the floor 200 is encountered during coal mining, the stability of the coal mining machine 11 can be maintained. At the same time, the pin shaft connection not only reduces the friction of the connecting part, reduces energy loss and improves work efficiency, but also makes maintenance and replacement of parts more convenient, reducing downtime.

[0175] Further, the straight section 1921 is provided with a third connecting hole, the push-jack 191 is provided with a fourth connecting hole, and the straight section 1921 and the push-jack 191 are connected through a second pin shaft 134 penetrating the third connecting hole and the fourth connecting hole. Similarly, the third connecting hole and the fourth connecting hole are adapted to the second pin shaft 134 to ensure that the second pin shaft 134 can penetrate and realize the connection of the two, thereby connecting the straight section 1921 and the push-jack 191.

[0176] Furthermore, the rotational connection formed by the third connecting hole, the fourth connecting hole, and the second pin shaft 134 allows the pusher jack 191 to push the straight section 1921 within a certain range, thereby pushing the entire coal mining machine 11. The extension and retraction of the pusher jack 191 can push the straight section 1921 and the connected inclined section 1922, as well as the entire coal mining machine 11 to move in the front-back direction of the floor 200. At the same time, by adjusting the angle jack 2111, the coal mining angle of the coal mining machine 11 can be changed.

[0177] The connection method of the second pin shaft 134 makes the connection between the straight section 1921 and the pusher jack 191 more flexible, which can adapt to the irregular inclination of the floor 200. The simplified design of the pin shaft connection makes the installation and maintenance work more convenient, and reduces the use of complex parts. The pusher jack 191 connects the straight section 1921 through the pin shaft, which can more directly and effectively transmit the pushing force, improving the pushing efficiency. The design of the pin shaft connection helps to reduce friction and wear, thereby prolonging the service life of the equipment. Through the pin shaft connection, the coal mining machine 11 can better adapt to different geological conditions, improving the working adaptability of the equipment. The pin shaft connection provides a stable connection method, which helps to maintain the stability of the coal mining machine 11 during operation, reducing the operation risk.

[0178] In some embodiments, as shown in Figure 15 The third connecting hole and the fourth connecting hole both extend in the vertical direction (the up-down direction of the coal mining face 100), and the straight section 1921 has a top end face and a bottom end face opposite in the vertical direction, and the bottom end face is provided with an avoidance space 1923 for avoiding the pusher jack 191.

[0179] When the straight section 1921 is connected with the pusher jack 191, the front end of the pusher jack 191 first extends into the avoidance space 1923, and then is connected through the second pin shaft 134, so that the connection between the straight section 1921 and the pusher jack 191 is simple, convenient and efficient, which can improve the connection efficiency of the equipment.

[0180] As shown in Figure 15 In some embodiments, the front-back adjusting assembly 211 includes a first limiting piece 2112 and a second limiting piece 2113, which are arranged on the connecting rod 192 and are located on the two sides of the angle jack 2111 in the front-back direction of the floor 200, and are used to limit the included angle between the angle jack 2111 and the connecting rod 192.

[0181] Specifically, the first limiting member 2112 and the second limiting member 2113 are arranged on the connecting rod 192 and are located on both sides of the angle jack 2111 in the front-rear direction of the base plate 200, and are used to limit the included angle between the angle jack 2111 and the connecting rod 192, which means that the extension of the angle jack 2111 will be limited by the limiting members, thereby controlling the maximum inclination angle of the coal mining machine 11. Although there is a limit to the included angle, the angle jack 2111 can still extend and retract within a limited range, thereby allowing the operator to adjust the inclination angle of the coal mining machine 11 according to the actual inclination of the base plate 200.

[0182] The design of the first limiting member 2112 and the second limiting member 2113 ensures that the inclination angle of the coal mining machine 11 does not exceed the preset safety range, preventing equipment damage or operational risks caused by excessive inclination. By limiting the movement range of the angle jack 2111, the stability of the coal mining machine 11 during coal mining can be enhanced, reducing vibration or shaking caused by excessive inclination. The operator can freely adjust the inclination angle of the coal mining machine 11 within the safety range, improving the flexibility and convenience of operation. Since the limiting members reduce the possibility of excessive inclination, equipment wear and damage caused by improper operation are reduced, and maintenance costs are reduced. By controlling the inclination angle of the coal mining machine 11, mechanical stress caused by excessive inclination can be reduced, prolonging the service life of the equipment. By ensuring that the coal mining machine 11 works at a safe inclination angle, coal mining efficiency can be improved and coal resources can be saved.

[0183] As shown in FIGS. Figure 16 and Figure 17 In some embodiments, the left-right adjustment assembly 212 includes a first hydraulic cylinder 2121 and a first mounting seat 2122, the first hydraulic cylinder 2121 includes a first fixed part 21211 and a first telescopic part 21212, the first fixed part 21211 is connected to the fuselage 111, the first telescopic part 21212 is telescopically connected to the first fixed part 21211 along the height direction of the fuselage 111, the first telescopic part 21212 is connected to the first mounting seat 2122, and the first sliding shoe 1151 is arranged on the first mounting seat 2122.

[0184] Specifically, when the coal mining machine 11 encounters a situation where the floor 200 is inclined, the controller controls the first hydraulic cylinder 2121 through the hydraulic system, so that the first telescopic part 21212 is telescoped relative to the first fixed part 21211. The telescoping of the first telescopic part 21212 will change the height of the first mounting seat 2122 and the first sliding shoe 1151, thereby adjusting the height of the first cutting drum 1124, so that the line between the first cutting drum 1124 and the second cutting drum 1125 can be adjusted to an appropriate angle with the floor 200, ensuring that the cutting drum 112 can better fit the coal seam and achieve effective cutting.

[0185] That is, the present application provides that the telescoping of the first hydraulic cylinder 2121 can flexibly adjust the height of the cutting drum 112 to adapt to different coal seam conditions, and can achieve precise adjustment of the height of the cutting drum 112. Moreover, the hydraulic cylinder has high reliability and can work stably in a complex underground environment, and is easy to maintain.

[0186] In some embodiments, the first mounting seat 2122 includes a first seat body 21221 and a first swing lever 21222, the first end of the first swing lever 21222 is fixedly connected with the first seat body 21221, the second end of the first swing lever 21222 is pivotably connected with the machine body 111, and the axis of the first swing lever 21222 is arranged at an angle with the telescoping direction of the first hydraulic cylinder 2121, the first fixed part 21211 is pivotably connected with the machine body 111, the first telescopic part 21212 is pivotably connected with the first seat body 21221, and the first sliding shoe 1151 is arranged on the first seat body 21221.

[0187] The first hydraulic cylinder 2121 can drive the first swing lever 21222 to swing in the height direction of the machine body 111 to adjust the distance between the first sliding shoe 1151 and the machine body 111 in the height direction of the machine body 111.

[0188] When the first hydraulic cylinder 2121 telescopes, since it is connected with the second end of the first swing lever 21222, the telescoping action of the first hydraulic cylinder 2121 will drive the first swing lever 21222 to swing in the height direction of the machine body 111. Since the first swing lever 21222 is fixedly connected with the first seat body 21221, the swinging of the swing lever will cause the position of the first seat body 21221 (and the first sliding shoe 1151) in the height direction of the machine body 111 to change, thereby adjusting the distance between the first sliding shoe 1151 and the machine body 111, so that the height of the first cutting drum 1124 can be adaptively adjusted according to the change of the inclination angle of the floor 200, ensuring that the cutting drum 112 maintains an appropriate cutting angle with the coal seam.

[0189] The cooperation of the first swing rod 21222 and the hydraulic cylinder enables the coal mining machine 11 to better adapt to the unevenness and inclination of the floor 200, improving the coal mining efficiency. The arrangement of the first swing rod 21222 increases the stability of the system, enabling stable cutting performance even in the case of complex floor 200 conditions.

[0190] Optionally, the first sliding shoe 1151 is pivotally connected with the first seat body 21221.

[0191] The first sliding shoe 1151 is connected with the first seat body 21221 through a pivot shaft, forming a pivot connection point, and the first sliding shoe 1151 is free to rotate in the axial direction of the pivot shaft. When the coal mining machine 11 moves in the walking direction and encounters an inclined floor 200, the first sliding shoe 1151 can rotate around the pivot shaft to adapt to the inclination angle of the floor 200, so that the first sliding shoe 1151 can always maintain good contact with the floor 200, thereby supporting the machine body 111 of the coal mining machine 11 and preventing the machine body 111 from tilting or sliding due to the inclination of the floor 200. Through the pivot connection, the first sliding shoe 1151 can better adapt to the ups and downs and inclination of the floor 200, improving the stability of the coal mining machine 11 under complex coal seam conditions. The stable machine body 111 helps to maintain the correct cutting angle between the cutting drum 112 and the coal seam, thereby improving the coal mining efficiency. Since the first sliding shoe 1151 can be self-adapted according to the inclination angle of the floor 200, the additional wear caused by the instability of the machine body 111 is reduced, prolonging the service life of the coal mining machine 11.

[0192] As shown in Figure 16 In some embodiments, the coal mining machine 11 includes a protective cover 213 connected with the machine body 111, the protective cover 213 covers at least part of the first hydraulic cylinder 2121, and a third guide groove 2131 extending in the height direction of the machine body 111 is defined between the protective cover 213 and the machine body 111, at least part of the first hydraulic cylinder 2121 is arranged in the third guide groove 2131, and the third guide groove 2131 is used to define the extension and retraction of the first hydraulic cylinder 2121 in the height direction of the machine body 111.

[0193] Specifically, during the coal mining process, the protective cover 213 can effectively protect the first hydraulic cylinder 2121 from damage from the external environment, prolonging the service life of the hydraulic cylinder. The arrangement of the protective cover 213 can also reduce the maintenance requirements of the first hydraulic cylinder 2121, reduce maintenance costs, and improve the overall reliability of the coal mining machine 11. The use of the protective cover 213 improves the reliability of the hydraulic system, ensuring stable operation of the coal mining machine 11.

[0194] When the hydraulic system controls the extension and retraction of the first hydraulic cylinder 2121, the extension and retraction part moves up and down within the third guide groove 2131. The third guide groove 2131 ensures the stability of the hydraulic cylinder during the extension and retraction process, avoids deviation caused by lateral forces, and improves the overall stability of the coal mining machine 11. The guiding effect of the third guide groove 2131 reduces vibration during the extension and retraction of the hydraulic cylinder, improving the smoothness of the coal mining process. The third guide groove 2131 also helps reduce wear on the hydraulic cylinder and extend its service life.

[0195] like Figure 18 and Figure 19 As shown, in some embodiments, the coal mining machine 11 further includes a hydraulic support assembly 214 and a third sliding shoe 1153. The hydraulic support assembly 214 is disposed on the machine body 111 and connected to the third sliding shoe 1153. The third sliding shoe 1153 corresponds to the first sliding shoe 1151 in the width direction of the machine body 111 and is located on the same side of the machine body 111. The hydraulic support assembly 214 is used to adjust the distance between the third sliding shoe 1153 and the machine body 111 in the height direction of the machine body 111.

[0196] Furthermore, the hydraulic support assembly 214 includes a second hydraulic cylinder 2141 and a second mounting base 2142. The second hydraulic cylinder 2141 includes a second fixed part 21411 and a second telescopic part 21412. The second fixed part 21411 is connected to the machine body 111. The second telescopic part 21412 is telescopically connected to the second fixed part 21411 along the height direction of the machine body 111. The second telescopic part 21412 is connected to the second mounting base 2142. The third slipper 1153 is disposed on the second mounting base 2142.

[0197] Specifically, when the coal mining machine 11 moves along the working axis of the working face and the bottom plate 200 tilts, the controller can supply oil to the second hydraulic cylinder 2141 through the hydraulic system, causing the second telescopic part 21412 to extend and retract relative to the second fixed part 21411. The extension and retraction of the second telescopic part 21412 will cause the height of the second mounting base 2142 and the third sliding shoe 1153 to change, thereby adjusting the distance between the third sliding shoe 1153 and the machine body 111 in the height direction.

[0198] The synchronized operation of the first hydraulic cylinder 2121 and the second hydraulic cylinder 2141 ensures that the third sliding shoe 1153 maintains the same height as the first sliding shoe 1151. This results in uniform force distribution on the machine body 111 across its width, preventing damage to the machine body 111 or hydraulic cylinders due to stress concentration and extending the service life of components. Simultaneously, it ensures the stability of the coal mining machine 11 when the base plate 200 is tilted, reducing tilting or sliding of the machine body 111 caused by unevenness in the base plate 200. A stable machine body 111 helps maintain the correct cutting angle between the cutting drum 112 and the coal seam, thereby improving coal mining efficiency.

[0199] Furthermore, the second mounting base 2142 includes a second base body 21421 and a second swing arm 21422. The first end of the second swing arm 21422 is fixedly connected to the second base body 21421, and the second end of the second swing arm 21422 is pivotally connected to the machine body 111. The axis of the second swing arm 21422 forms an angle with the extension / retraction direction of the second hydraulic cylinder 2141. The second fixed part 21411 is pivotally connected to the machine body 111, and the second extension / retraction part 21412 is pivotally connected to the second base body 21421. The second slipper 1152 is disposed on the second base body 21421. The extension / retraction of the second hydraulic cylinder 2141 can drive the second swing arm 21422 to swing in the height direction of the machine body 111, thereby adjusting the distance between the second slipper 1152 and the machine body 111 in the height direction of the machine body 111.

[0200] When the second hydraulic cylinder 2141 extends or retracts, since it is connected to the second end of the second swing rod 21422, the extension or retraction of the cylinder will cause the second swing rod 21422 to swing in the height direction of the machine body 111. Since the second swing rod 21422 is fixedly connected to the second base 21421, the swing of the second swing rod 21422 will cause the position of the second base 21421 (and the second slipper 1152) to change in the height direction of the machine body 111, thereby adjusting the distance between the second slipper 1152 and the machine body 111, so that the height of the second cutting cylinder 1125 can be adaptively adjusted according to the change of the tilt angle of the base plate 200, ensuring that the cutting cylinder 112 maintains an appropriate cutting angle with the coal seam.

[0201] The synergistic effect of the second swing arm 21422 and the hydraulic cylinder enables the coal mining machine 11 to better adapt to the unevenness and inclination of the base plate 200, thereby improving coal mining efficiency. The installation of the second swing arm 21422 increases the stability of the system, maintaining stable cutting performance even under complex conditions on the base plate 200.

[0202] In some embodiments, such as Figure 16 As shown, the coal mining machine 11 also includes a third mounting base 215 and a transition rod 216. The third mounting base 215 includes a third base body 2151 and a rod body 2152. The rod body 2152 extends along the length direction of the machine body 111. The first end of the rod body 2152 is fixedly connected to the third base body 2151, and the second end of the rod body 2152 is pivotally connected to the machine body 111. The transition rod 216 extends along the height direction of the machine body 111, and both ends of the transition rod 216 are pivotally connected to the machine body 111 and the third base body 2151, respectively.

[0203] That is, on both sides of the length direction of the machine body 111, the left and right adjustment assembly 212 is located on one side of the machine body 111, and the third mounting seat 215 and the adapter rod 216 are located on the other side of the machine body 111 and are connected with the second sliding shoe 1152. That is, one side of the length direction of the coal mining machine 11 can adjust the height, and the other side is fixed in height, so as to reduce the overall weight and reduce the production cost in the process of meeting the left and right angle adjustment.

[0204] As shown in Figures 20 to 23 some embodiments, the machine body 111 includes a plurality of coal guide areas 116, the coal guide areas 116 extend through the machine body 111 along the width direction of the machine body 111, and the plurality of coal guide areas 116 are arranged at intervals along the length direction of the machine body 111; the coal mining machine 11 further includes a coal guide part 23 connected with the machine body 111, the coal guide part 23 includes a coal guide plate 231, the coal guide plate 231 includes an arc-shaped body 2311 and a coal guide connecting piece 2312, the arc-shaped body 2311 is a concave arc surface adjacent to one side of the barrel 1121, the coal guide connecting piece 2312 is connected with the arc-shaped body 2311, the coal guide connecting piece 2312 has a matching part 2313, the matching part 2313 is connected with the machine body 111, and the coal guide plate 231 can move towards or away from the barrel 1121 relative to the machine body 111 through the matching part to adjust the gap between the barrel 1121 and the coal guide plate 231. The coal guide part 23 is a plurality of coal guide parts 23, and the plurality of coal guide parts 23 correspond one-to-one to the plurality of barrels 1121.

[0205] Specifically, the plurality of coal guide areas 116 are arranged at intervals in the left and right directions, and the coal guide areas 116 extend through the machine body 111 to facilitate the subsequent coal body entering the coal conveyor 13 through the coal guide areas 116, thereby reducing the accumulation and blockage phenomenon. The gap is provided between the barrel 1121 and the coal guide plate 231, which can facilitate the transportation of coal and can utilize the extrusion between the barrel 1121 and the coal guide plate 231 to force large pieces of coal to break into small pieces of coal, thereby avoiding causing the coal guide area 116 to be blocked.

[0206] The coal guide connecting piece 2312 and the arc-shaped body 2311 can be connected by welding or threaded connection, the coal guide connecting piece 2312 has a matching part 2313, the matching part 2313 is connected with the machine body 111 by threaded connection, and the coal guide plate 231 can move towards or away from the barrel 1121 relative to the machine body 111 through the matching part to adjust the gap between the barrel 1121 and the coal guide plate 231, so as to adapt to the coal conveying amount and the block size of the coal under different working conditions. In addition, the plurality of coal guide parts 23 correspond one-to-one to the plurality of barrels 1121, so that each barrel 1121 can perform cutting operation under the action of the coal guide plate 231, thereby improving the coal collection efficiency.

[0207] It can be understood that the coal guide plate 231 can effectively guide the coal into the conveying system, reducing the accumulation and blockage phenomenon. The rotating function of the coal guide plate 231 allows real-time adjustment according to the thickness and hardness of the coal, increasing the adaptability of the coal mining machine 11. The design of the concave arc surface optimizes the coal conveying and crushing process, helping the flow and crushing of the coal, and improving the production efficiency of the coal mining machine 11.

[0208] It should be noted that the arc surface (concave arc surface) formed by the coal guide plate 231 adjacent to the side surface of the barrel 1121 should be adapted to the cutting area formed by the barrel 1121 in use, so as to ensure the stable transportation of the coal body.

[0209] As shown in Figures 20 to 23 In some embodiments, the fitting part includes a first fitting part 23131 and a second fitting part 23132, the first fitting part 23131 is located on one side of the coal guide connecting piece 2312 adjacent to the machine body 111, and the second fitting part 23132 is located on the side of the coal guide connecting piece 2312 away from the machine body 111, the second fitting part 23132 is a plurality of, and the plurality of second fitting parts 23132 are arranged in a circumferential direction along the circumference of the first fitting part 23131.

[0210] Specifically, the first fitting part 23131 is located on the rear side of the coal guide connecting piece 2312, used for fixing the connection between the coal guide plate 231 and the machine body 111. The second fitting part 23132 is located on the front side of the coal guide connecting piece 2312, and is a plurality of, the second fitting part 23132 is arranged in a circumferential direction around the position where the first fitting part 23131 is located, used for further fixing and supporting the coal guide plate 231. And, the plurality of second fitting parts 23132 can be more conveniently connected with the machine body 111.

[0211] That is, when the coal guide plate 231 needs to adjust the installation angle, the coal guide plate 231 can be rotated around the first fitting part 23131, so that at least one of the plurality of second fitting parts 23132 corresponds to the fitting part on the machine body 111 after the coal guide plate 231 is rotated by a certain angle, thereby realizing the angle adjustment function of the coal guide plate 231.

[0212] It can be understood that the combination design of the first fitting part 23131 and the second fitting part 23132 enhances the stability of the coal guide plate 231. The first fitting part 23131 is directly connected with the machine body 111, providing basic fixation and rotation function. The circumferential arrangement of the second fitting part 23132 provides additional support points to prevent the coal guide plate 231 from swinging or tilting during operation, ensuring the smooth conveying of the coal. The plurality of second fitting parts 23132 allows the operator to make real-time adjustments according to the thickness and hardness of the coal. By adjusting the position of the second fitting part 23132, the inclination angle and position of the coal guide plate 231 can be changed to adapt to different coal mining conditions.

[0213] Further, the first fitting part 23131 includes a rotating shaft 23133, both ends of the rotating shaft 23133 are correspondingly connected to the machine body 111 and the coal guide connecting piece 2312, so that the coal guide connecting piece 2312 is rotatable relative to the machine body 111 around the rotating shaft 23133. The second fitting part 23132 includes positioning holes 23134 on the coal guide connecting piece 2312, the positioning holes 23134 are provided in multiple and are arranged at equal angles around the rotating shaft 23133. The machine body 111 is provided with positioning shafts 23135 matched with the positioning holes 23134. When the coal guide connecting piece 2312 needs to be adjusted, the coal guide connecting piece 2312 can be rotated around the rotating shaft 23133 until the positioning shafts 23135 are inserted into the corresponding positioning holes 23134 at the preset position, so as to adjust the gap between the coal guide plate 231 and the cylinder body 1121.

[0214] In the embodiment, the positioning holes 23134 are provided in three. Of course, in some other embodiments, the positioning holes 23134 can also be provided in 3, 4 or 5.

[0215] In some embodiments, the side of the coal guide connecting piece 2312 adjacent to the cylinder body 1121 is a concave arc surface, the side of the coal guide connecting piece 2312 adjacent to the cylinder body 1121 is smoothly connected to the side of the arc-shaped body 2311 adjacent to the cylinder body 1121, so that the side of the coal guide plate 231 adjacent to the cylinder body 1121 and the side of the coal guide connecting piece 2312 adjacent to the cylinder body 1121 form a nearly continuous arc surface, thereby helping to guide the coal to enter the cylinder body 1121 stably, reducing the impact and wear of the coal in the conveying process, and ensuring the continuity and stability of the coal in the conveying process.

[0216] That is, the design of the concave arc surface reduces the impact force of the coal when entering the cylinder body 1121, reduces the wear of the coal guide connecting piece 2312, and prolongs the service life thereof. The design of the smooth connection ensures the smooth transition of the coal between the coal guide connecting piece 2312 and the arc-shaped body 2311, reduces the resistance of the coal in the conveying process, and improves the conveying efficiency.

[0217] In some embodiments, the coal guide part 23 further includes an adjusting plate 232, the adjusting plate 232 is connected to the arc-shaped body 2311 through a first rotating shaft 233, the adjusting plate 232 is arranged on both sides of the arc-shaped body 2311 in the height direction of the machine body 111 relative to the coal guide connecting piece 2312, and the axis of the first rotating shaft 233 is parallel to the width direction of the machine body 111.

[0218] Specifically, the coal guide connecting piece 2312 and the adjusting plate 232 are arranged on the upper and lower sides of the coal guide plate 231, respectively, that is, the coal guide connecting piece 2312 is located on the upper side of the coal guide plate 231, and the adjusting plate 232 is located on the lower side of the coal guide plate 231. Alternatively, the adjusting plate 232 and the coal guide plate 231 can be connected by a threaded connection (i.e., the first rotating shaft 233 is a threaded shaft), so that the adjusting plate 232 can be adjusted in rotation relative to the coal guide plate 231.

[0219] It can be understood that the design of the adjusting plate 232 allows the operator to adjust the position and angle of the coal guide plate 231 in real time according to the thickness and hardness of the coal. The rotation of the adjusting plate 232 can change the area and angle of the coal guide plate 231 in contact with the coal, thereby affecting the conveying and crushing effect of the coal, improving the adaptability of the cutting assembly, and enabling the coal winning machine 11 to better adapt to different coal mining conditions and types of coal; at the same time, it can also optimize the conveying path of the coal, reduce the impact and wear of the coal during the conveying process, and improve the conveying efficiency.

[0220] In some embodiments, the adjusting plate 232 has an initial state and a rotating state; in the initial state, the adjusting plate 232 is smoothly connected to the side of the arc-shaped body 2311 adjacent to the side of the cylinder 1121; in the rotating state, the adjusting plate 232 is rotated towards the cylinder 1121, and the rotation angle of the adjusting plate 232 is less than or equal to 60°.

[0221] Specifically, as shown in Figure 22 the rotation angle of the adjusting plate 232 is δ, and δ is less than or equal to 60°. It can be understood that in the initial state, the side of the adjusting plate 232 adjacent to the cylinder 1121 is smoothly connected to the side of the arc-shaped body 2311 adjacent to the cylinder 1121, forming a smooth transition surface, reducing the impact and wear of the coal during the conveying process, improving the conveying efficiency, and facilitating the smooth conveying of the coal. In the rotating state, the adjusting plate 232 is rotated towards the cylinder 1121, and the rotation angle of the adjusting plate 232 is less than or equal to 60°. That is, in the rotating state, the adjusting plate 232 can change the angle between the adjusting plate 232 and the cylinder 1121, thereby adjusting the conveying path and angle of the coal, facilitating the use of the adjusting member 251 to scrape the coal scattered below the adjusting member 251 when the adjusting member 251 moves in the left-right direction, improving the coal collection efficiency, and also facilitating the adaptation to different coal mining conditions.

[0222] As shown in Figures 24 to 28As shown, in some embodiments, the coal mining machine 11 further comprises a waterway spraying assembly 25, the waterway spraying assembly 25 comprising an adjusting member 251 and a spraying head 252, the adjusting member 251 having a water inlet 2511 for connecting to a water source, the adjusting member 251 comprising a heat exchange part 253 arranged in a lubricating oil circuit of the coal mining machine 11 to cool the lubricating oil in the lubricating oil circuit, and the spraying head 252 arranged on the barrel 1121 and connected to the adjusting member 251 to form water mist on the cutting working face where the barrel 1121 is located.

[0223] Specifically, after the water flow enters the adjusting member 251, the water flow exchanges heat with the lubricating oil in the lubricating oil circuit to reduce the temperature of the lubricating oil, ensuring the performance of the lubricating oil and providing good lubrication protection for each moving part of the coal mining machine 11. Moreover, the heat-exchanged water flow can also be combined with the remaining water flow and finally flow to the spraying head 252 to form uniform and dense water mist on the coal mining working face 100, thereby effectively reducing the dust concentration generated in the cutting process and improving the air quality of the working face. At the same time, the water mist can also cool the cutting picks 1123 on the cutting drum 112 to some extent, reducing the working temperature thereof.

[0224] Therefore, by integrating the water supply, pressure reduction, flow splitting, heat exchange and spraying functions in the adjusting member 251, the cooling demand of the lubricating oil circuit is ensured, and a high-efficiency water mist barrier is formed by the spraying system built-in the barrel 1121, significantly reducing the dust concentration and equipment temperature rise in the coal mining operation, and improving the operation safety and equipment life.

[0225] In some embodiments, the adjusting member 251 comprises a pressure regulating part 254, a flow splitting part 255 and a spraying flow channel 256. The pressure regulating part 254 is connected to the water source through a water inlet pipe 2541, and has a first outlet 2542; the flow splitting part 255 has a first inlet 2551, a second outlet 2552 and a third outlet 2553, the first inlet 2551 and the first outlet 2542 being connected through a first pipeline 257; the heat exchange part 253 has a second inlet 2531 and a fourth outlet 2532, the second inlet 2531 being connected to the second outlet 2552 through a second pipeline 258, and the heat exchange part 253 being arranged in the lubricating oil circuit of the coal mining machine 11 to cool the lubricating oil in the lubricating oil circuit; the spraying flow channel 256 is arranged in the barrel 1121 and has a fifth outlet 2561 and two flow collecting ports 2562, the two flow collecting ports 2562 being connected to the third outlet 2553 and the fourth outlet 2532 respectively; and the spraying head 252 is connected to the fifth outlet 2561 of the spraying flow channel 256 to form water mist on the cutting working face where the barrel 1121 is located.

[0226] Specifically, the water source can provide a water flow supply for the system, which can be a water tank arranged in advance near the coal mining face 100 or an interface connected to an external water supply pipeline. The pressure regulating part 254 can stabilize the water output by the water source, so that the water flow flows out from the first outlet 2542 at a stable and appropriate pressure. The flow dividing part 255 can divide the water flow output by the pressure regulating part 254 into a first water flow and a second water flow, the first water flow flows to the heat exchange part 253 from the second outlet 2552, and the second water flow directly flows to the spray flow channel 256. Moreover, the flow dividing part 255 can accurately control the flow ratio of the first water flow and the second water flow, so as to ensure that the system can reasonably allocate water flow according to actual needs under different working conditions, and realize efficient use of water resources.

[0227] In some embodiments, the pressure regulating part 254 includes a pressure reducing valve 259, an overflow valve 260, and an overflow pipe 261, the overflow valve 260 is arranged at the water outlet 2591 of the pressure reducing valve 259, one end of the overflow pipe 261 is connected to the overflow valve 260, and the other end of the overflow pipe 261 is connected to the outside of the coal mining machine 11.

[0228] Specifically, the overflow valve 260 is arranged at the water outlet 2591 of the pressure reducing valve 259, which can monitor the pressure condition of the waterway in real time. It can be understood that the overflow valve 260 is in communication with the water outlet 2591 of the pressure reducing valve 259. In the normal working state, the overflow valve 260 is in a closed state; when the pressure reducing valve 259 fails or the system pressure abnormally rises, the overflow valve 260 will automatically open when the safety pressure value set by the overflow valve 260 is exceeded. At this time, part of the water flow will change the flow direction through the overflow valve 260, and will be quickly discharged from the coal mining machine 11 through the overflow pipe 261, so as to avoid the accumulation of water flow in the coal mining machine 11 and cause damage to the electrical equipment and mechanical parts of the coal mining machine 11.

[0229] That is, in the actual operation process, the pressure reducing valve 259 is responsible for the preliminary pressure reduction of the water flow, to ensure that the output water pressure meets the system requirements; the overflow valve 260 serves as a safety protection device, which opens in time when the pressure is abnormal to prevent the system pressure from being too high; and the overflow pipe 261 provides a discharge channel for the water flow after the overflow valve 260 is opened, thereby effectively stabilizing the pressure of the waterway system and providing a solid guarantee for the stable and reliable operation of the integrated waterway system of the coal mining machine 11.

[0230] Further, the flow dividing part 255 includes a first flow dividing pipe 2554 and a second flow dividing pipe 2555, and a flow adjusting valve 2556 is arranged on each of the first flow dividing pipe 2554 and the second flow dividing pipe 2555, the second outlet 2552 is arranged on the first flow dividing pipe 2554, and the third outlet 2553 is arranged on the second flow dividing pipe 2555, so as to accurately control the water flow according to actual needs, and provide reliable water flow guarantee for the lubricating oil circuit cooling and spray dust reduction of the coal mining machine 11.

[0231] In some embodiments, the cutting drum 112 further comprises a reducer 117, an output end of the reducer 117 is provided with an end disc 1171 and connected with the drum body 1121, the spray flow channel 256 comprises a first flow channel 2563, a second flow channel 2564, a third flow channel 2565 and a connecting pipe 2566, the first flow channel 2563 is arranged on the central axis of the reducer 117 along the axial direction of the reducer 117, the second flow channel 2564 is arranged on the end disc 1171 along the radial direction of the reducer 117, the third flow channel 2565 is arranged on the drum body 1121 and connected with the spray head 252 of the drum body 1121, and the two ends of the connecting pipe 2566 are connected with the second flow channel 2564 and the third flow channel 2565 respectively.

[0232] Specifically, the reducer 117 can convert the power of the driving system of the coal mining machine 11 into low-speed high-torque power output, and transmit the power to the drum body 1121 through the end disc 1171 to drive the drum body 1121 to rotate, so as to realize continuous and efficient cutting of the coal seam. Among them, the first flow channel 2563 is arranged on the central axis of the reducer 117 along the axial direction of the reducer 117, which fully utilizes the internal space of the reducer 117, so that the overall structure is more compact. One end of the second flow channel 2564 is connected with the first flow channel 2563, and the other end is communicated with the third flow channel 2565 through the connecting pipe 2566, so that the water flow is diverted from the axial direction to the radial direction under the action of the second flow channel 2564.

[0233] Further, the connecting pipe 2566 is provided as a rubber hose, which can adapt to the slight deformation and vibration of the drum body 1121 during rotation.

[0234] Further, the reducer 117 is provided as a planetary reducer 117, which can facilitate the arrangement of the first flow channel 2563 on the central axis, avoiding the interference between the flow channel and other components. Among them, the first flow channel 2563 is arranged in the form of a water shaft inside the planetary reducer 117.

[0235] As shown in FIGS. 1, 2 and 3, the spray head 252 is arranged on the end cover 1122 of the drum body 1121, and the spray head 252 is arranged on the end cover 1122 in the form of a water shaft. Figure 26 , Figure 27 and Figure 28 As shown in FIGS. 1, 2 and 3, the spray head 252 is arranged on the end cover 1122 of the drum body 1121, and the spray head 252 is arranged on the end cover 1122 in the form of a water shaft.

[0236] And, the spray head 252 is arranged in one-to-one correspondence with the cutting tooth 1123, and can also spray water mist to the dust generated by each cutting tooth 1123, so that the water mist can accurately cover the dust generation area, and the waste of water mist and the blind area of dust reduction can be avoided.

[0237] Further, as shown in Figure 28 the spray head 252 has a first direction nozzle 2521 and a second direction nozzle 2522, the spraying direction of the first direction nozzle 2521 is consistent with the radial direction of the cylinder 1121, and the spraying direction of the second direction nozzle 2522 is opposite to the rotating direction of the cutting tooth 1123 drum and is arranged towards the cutting tooth 1123.

[0238] Specifically, in the process of high-speed rotating the cylinder 1121 to cut coal, the coal seam is broken, and a large amount of dust will spread in the radial direction of the drum; the spraying direction of the first direction nozzle 2521 is consistent with the radial direction of the cylinder 1121, so that the dust spreading area in the radial direction of the drum can be quickly covered, the settling speed is accelerated, and the dust spreading to a farther place is effectively prevented.

[0239] The cutting tooth 1123 is a key component directly contacting the coal seam for cutting on the cylinder 1121, and in the cutting process, the cutting tooth 1123 will bear a huge impact force and friction force, thereby generating a large amount of heat. The spraying direction of the second direction nozzle 2522 is opposite to the rotating direction of the cutting tooth 1123 drum and is arranged towards the cutting tooth 1123, so that the sprayed water mist can directly impact on the cutting tooth 1123. In the process of impacting the cutting tooth 1123, the water mist can quickly absorb the heat on the surface of the cutting tooth 1123 and carry it away, thereby achieving effective cooling.

[0240] Meanwhile, the second direction nozzle 2522 can also accurately reduce dust in the local area around the cutting tooth 1123, directly spray water mist around the cutting tooth 1123, more effectively capture and adsorb dust, and reduce the spreading range of dust.

[0241] As shown in Figure 29 in some embodiments, the spray flow channel 256 includes a booster pump 262 and a flow monitor, the flow monitor is arranged on the third flow channel 2565 to monitor the water flow of the spray head 252, the flow monitor is electrically connected with the booster pump 262, and the booster pump 262 is used to increase the water flow pressure in the spray flow channel 256 when the flow value collected by the flow monitor is less than a preset target value.

[0242] The flow monitor and the booster pump 262 form an intelligent linkage control system. When the flow monitor starts working, it continuously collects the flow data of the water flowing through the third flow channel 2565 and transmits the data to the controller in real time. The controller compares the collected flow value with the preset target value. The preset target value is an ideal flow value set in advance according to the cutting conditions, dust suppression requirements and other factors, which represents the water output required by the spray head 252 to achieve the best dust suppression effect under the current working conditions.

[0243] If the flow value collected by the flow monitor is less than the preset target value, it means that the spray head 252 may be blocked and cannot effectively suppress dust diffusion. At this time, the controller will immediately send an instruction to the booster pump 262, and the booster pump 262 will automatically adjust its operating parameters to increase the water flow pressure in the spray flow channel 256 after receiving the instruction. When this powerful water flow reaches the spray head 252, it will form a strong impact on the coal powder blocked inside the spray head 252. The coal powder will gradually loosen, disperse and eventually be washed away by the water flow under the strong impact of the water flow, solving the problem of the spray head 252 being blocked.

[0244] Moreover, the booster pump 262 will continuously adjust its operating parameters according to the feedback of the controller to maintain appropriate water flow pressure to ensure that the coal powder at the spray head 252 is completely washed away. For example, in the initial stage of washing away the coal powder, the booster pump 262 may impact at a higher pressure; as the coal powder gradually decreases, the booster pump 262 will appropriately reduce the pressure to avoid unnecessary damage to the spray head 252.

[0245] Further, as shown in Figure 25 , Figure 29 The spray flow channel 256 includes a flow collector 2567, a first branch 2568 and a second branch 2569, two flow collectors 2562 are arranged on the flow collector 2567, the first branch 2568 and the second branch 2569 are arranged in parallel between the flow collector 2567 and the first flow channel 2563, the booster pump 262 is arranged on the first branch 2568, and the first branch 2568 is provided with a switch valve 264.

[0246] That is, under normal working conditions, if additional pressure boosting is not needed, the switch valve 264 can be in the closed state, at which time the water flow mainly flows to the spray head 252 through the second branch 2569, reducing the energy consumption and wear of the booster pump 262. When the situation requires pressure boosting, the controller will open the switch valve 264 to allow the water flow to pass through the first branch 2568 and be boosted by the booster pump 262 before flowing to the spray head 252. This flexible control mode allows the spray system to adjust the working mode in real time according to different working conditions, ensuring the dust suppression effect and improving the energy utilization efficiency.

[0247] As Figure 30 shown, in some embodiments, the first flow channel 2563 comprises a first shaft section 2651, a second shaft section 2652 and a third shaft section 2653 arranged in sequence, the flow area of the first shaft section 2651 and the flow area of the third shaft section 2653 are both larger than the flow area of the second shaft section 2652.

[0248] In the first flow channel 2563, when the water flow enters the second shaft section 2652 from the first shaft section 2651, according to the continuity equation and Bernoulli equation in fluid mechanics, the water flow is forced to accelerate through the second shaft section 2652 due to the sharp reduction of the flow area. When the water flow continues to flow forward and is about to enter the third shaft section 2653, according to the continuity equation, the flow rate will gradually decrease due to the gradual increase of the flow area of the third shaft section 2653 relative to the second shaft section 2652. According to the law of conservation of energy, the kinetic energy of the water flow increased in the second shaft section 2652 will be partially converted into pressure energy in the subsequent process, thereby achieving the effect of pressure increase.

[0249] Optionally, the flow cross-sectional area of the first shaft section 2651 is A, the flow cross-sectional area of the second shaft section 2652 can be 0.5A to 0.7A, and the flow cross-sectional area of the third shaft section 2653 can be 0.7A to A.

[0250] In the present embodiment, the heat exchanger can be a plate heat exchanger, which is stacked by metal sheets with a certain corrugated shape. By increasing or decreasing the number of sheets, the heat exchange area can be easily changed to meet the heat exchange requirements under different working conditions.

[0251] As Figures 31 to 37 shown, in some embodiments, the coal mining machine 11 further comprises a top cover assembly and a lubrication assembly; the machine body 111 comprises a first shell 281, a transmission shell 282 and a third shell 283 arranged in sequence and spaced apart, the first shell 281 has a first cavity 2811, the transmission shell 282 has a transmission cavity 2821, and the third shell 283 has a third cavity 2831; the top cover assembly comprises a plurality of cover plates 2711, the first shell 281, the transmission shell 282 and the third shell 283 are all provided with cover plates 2711 which can be detachably connected, and the cover plates 2711 are used to open or seal the corresponding first cavity 2811, transmission cavity 2821 or third cavity 2831; the lubrication assembly is detachably arranged on the machine body 111, and the lubrication assembly comprises a plurality of lubrication pumps 2731, the cover plates 2711 are provided with liquid oil passages 27111, the output ends of the lubrication pumps 2731 are in communication with the inlets of the liquid oil passages 27111 of the cover plates 2711, and the outlets of the liquid oil passages 27111 of the cover plates 2711 all face the direction of the bottoms of the corresponding first cavity 2811, transmission cavity 2821 and third cavity 2831.

[0252] Specifically, the machine body 111 comprises a first shell 281, a transmission shell 282 and a third shell 283 arranged in sequence in the left-right direction, the rear end of the first shell 281 is connected with the transmission shell 282, the rear end of the third shell 283 is connected with the transmission shell 282, and the first shell 281 and the third shell 283 are arranged in opposite directions in the left-right direction of the second shell 287 to facilitate the installation of the cutting drum 112 and avoid interference between the cutting drums 112 on the left and right sides during work. The cover plate 2711 is detachably connected with the first shell 281, the transmission shell 282 and the third shell 283, so that the cover plate 2711 can be removed to clean the liquid passage 27111 in the cover plate 2711. The cover plate 2711 can be provided with an oil inlet connected with the outlet of the circulating pump to facilitate the output of oil to spray and lubricate the parts in the first cavity 2811, the transmission cavity 2821 or the third cavity 2831. The parts in the cavity can be gears or splines on the transmission shaft, thereby avoiding material deformation and denaturation caused by part processing.

[0253] The cover plate 2711 is connected with the three shells (the first shell 281, the transmission shell 282 and the third shell 283) by bolts or buckles, so that the oil passage can be cleaned without disassembling the entire transmission system, significantly reducing downtime. At the same time, the oil passage is built into the cover plate 2711, which facilitates the replacement of a new cover plate 2711 to achieve the need to clean the oil passage, shorten the maintenance time, and complete the machine recovery process. At the same time, the cover plate 2711 integrates the oil inlet, which directly connects with the outlet of the circulating pump, simplifying the pipeline compared with the existing technology design which needs to be connected with an oil pipe. When cleaning, the cover plate 2711 is opened to expose the oil passage, avoiding lubrication failure or gear wear caused by impurities accumulation, without the need to disassemble the entire transmission assembly 33. At the same time, it is also convenient to take out the cover plate 2711 for chemical reagent tilting.

[0254] As shown in Figure 32 some embodiments, the coal mining machine 11 further comprises an oil injection nozzle 284, the cover plate 2711 is detachably connected with the oil injection nozzle 284, and the oil injection nozzle 284 is communicated with the outlet of the liquid passage 27111. The outlet of the oil injection nozzle 284 faces the bottom of the machine body 111, and at least one cover plate 2711 is arranged on the transmission shell 282.

[0255] Specifically, the oil injection nozzle 284 is arranged at the bottom of the cover plate 2711 and is communicated with the liquid passage 27111 to spray oil to the parts in the first cavity 2811, the transmission cavity 2821 and the third cavity 2831. Since the oil injection nozzle 284 faces downward, the oil is accelerated by gravity and oil pressure, increasing the flow rate of the spray and the disorder of the oil flow, thereby improving the coverage range of the oil. The oil injection nozzle 284 is detachably connected with the cover plate 2711. If the nozzle is blocked by impurities, it only needs to be removed for cleaning or replacement, further shortening the downtime.

[0256] The transmission shell 282 is provided with at least one cover plate 2711, that is, a plurality of cover plates 2711 can be provided according to the number of components of the transmission shell 282 or the component setting range area to cover the transmission components in the whole transmission shell 282, so as to improve the lubrication effect and efficiency.

[0257] As shown in Figure 32 and Figure 33 In some embodiments, the first shell 281, the transmission shell 282 and the third shell 283 are all provided with corresponding communication oil return channels 285, the oil return channel 285 outlet is connected with the lubricating pump 2731 input end, and the oil return channel 285 inlet is arranged at the bottom of the corresponding first cavity 2811, transmission cavity 2821 or third cavity 2831.

[0258] In addition, in some embodiments, the top of the first shell 281, the transmission shell 282 and the third shell 283 is provided with corresponding communication oil outlet channels 286, and the oil outlet channel 286 inlet is also connected with the lubricating pump 2731 output end, and the oil outlet channel 286 outlet is arranged at the top of the corresponding first cavity 2811, transmission cavity 2821 or third cavity 2831.

[0259] Specifically, the first shell 281, the transmission shell 282 and the third shell 283 are all provided with corresponding communication oil return channels 285. For example, the oil return channel 285 inlet on the first shell 281 is communicated with the bottom of the first cavity 2811 to collect the oil liquid at the bottom of the first cavity 2811. The oil return channel 285 inlet on the third shell 283 is communicated with the bottom of the third cavity 2831 to collect the oil liquid at the bottom of the third cavity 2831. The oil return channel 285 inlet on the transmission shell 282 is communicated with the bottom of the transmission cavity 2821 to collect the oil liquid at the bottom of the transmission cavity 2821.

[0260] The oil outlet channel 286 inlet on the first shell 281 is communicated with the top of the first cavity 2811 to spray the oil liquid downward from the top of the first cavity 2811. The oil outlet channel 286 inlet on the third shell 283 is communicated with the top of the first cavity 2811 to spray the oil liquid downward from the top of the third cavity 2831. The oil outlet channel 286 inlet on the transmission shell 282 is communicated with the bottom of the transmission cavity 2821 to spray the oil liquid downward from the top of the transmission cavity 2821.

[0261] The present application improves the efficiency of oil output by arranging the oil return channel 285 at the bottom of the first cavity 2811, the transmission cavity 2821 and the third cavity 2831, and connecting the circulating pump inlet with the oil return channel 285, that is, connecting the circulating pump input end with the oil return hole, and arranging the oil outlet channel 286 at the top of the first cavity 2811, the transmission cavity 2821 and the third cavity 2831 to output the oil liquid into the cavity.

[0262] In some embodiments, the top cover assembly further comprises a first sealing ring, the first sealing ring is arranged on the outer circumferential surface of the cover plate 2711, and the first sealing ring is arranged on the top of the cover plate 2711.

[0263] Specifically, the first sealing ring is arranged on the upper end of the outer circumferential surface of the cover plate 2711, and the first sealing ring is in contact with the machine body 111 to seal the cover plate 2711 and the machine body 111, so as to prevent the oil in the cavity from leaking out between the cover plate 2711 and the machine body 111.

[0264] Optionally, the cover plate 2711 and the machine body 111 are connected by bolts, the bolts are threadedly connected through the cover plate 2711 and the machine body 111, and the nuts are in contact with the cover plate 2711 to fix the cover plate 2711 on the machine body 111.

[0265] Further, the top cover assembly further comprises a second sealing ring, the lubricating pump 2731 is sleeved with the second sealing ring close to one end of the machine body 111 to separate the lubricating pump 2731 from the machine body 111, thereby avoiding the components around the lubricating pump 2731 from being impacted or contaminated by the oil, and improving the stability and safety of the use of the coal mining machine 11.

[0266] As shown in FIG. 1, Figures 34 to 37 In some embodiments, the coal mining machine 11 further comprises a driving assembly 31 and a transmission assembly 33 connected with the machine body 111, the machine body 111 further comprises a second shell 287, the second shell 287 has a second cavity 2871 therein, the lubricating pump 2731 is arranged in the second shell 287, the driving assembly 31 is arranged in the second cavity 2871, the first cutting drum 1124 is at least partially arranged in the first cavity 2811, the second cutting drum 1125 is at least partially arranged in the third cavity 2831, the transmission assembly 33 is at least partially arranged in the transmission cavity 2821, and the driving assembly 31, the first cutting drum 1124, the second cutting drum 1125 and the transmission assembly 33 are engaged with the power input end of the lubricating pump 2731 to provide power for the lubricating pump 2731.

[0267] Specifically, the second shell 287 is arranged between the first shell 281 and the third shell 283 in the left-right direction, the rear end of the second shell 287 is connected with the transmission shell 282, and the second shell 287 can be integrally formed with the first shell 281, the third shell 283 and the transmission shell 282. The lubricating pump 2731 is also arranged on the second shell 287, and the lubricating pump 2731 on the second shell 287 extends into the second cavity 2871 to circulate the oil in the second cavity 2871.

[0268] The driving assembly 31, the first cutting drum 1124, the second cutting drum 1125 and the transmission assembly 33 are engaged with the power input end of the lubricating pump 2731 to provide power for the lubricating pump 2731. Alternatively, the driving assembly 31, the first cutting drum 1124, the second cutting drum 1125 and the transmission assembly 33 can be provided with splines or gears to be engaged with each other to complete the transmission of power.

[0269] The present application can provide timely lubrication for the components by simultaneously starting and stopping the lubricating pump 2731 with the power components and setting the synchronously operating lubricating pump 2731, reduce the wear and failure caused by impact, and improve the service life and reliability of the equipment. The energy consumption required for driving the lubricating pump 2731 by the separate motor is cancelled, the energy consumption of the whole system is reduced, and the energy utilization efficiency is improved. The circulation of the oil is performed by the lubricating pump 2731 and the cover plate 2711 and the oil circuit provided, without the need for the setting of the external liquid tank, the number of components is also reduced, and the volume of the coal mining machine 11 is further reduced.

[0270] In some embodiments, the first cutting drum 1124 is detachably connected with the first shell 281, the second cutting drum 1125 is detachably connected with the third shell 283, the driving assembly 31 is detachably connected with the second shell 287, the transmission assembly 33 is at least partially arranged in the transmission cavity 2821, the input end of the transmission assembly 33 is connected with the output end of the driving assembly 31, the first output end of the transmission assembly 33 is connected with the input end of the first cutting drum 1124, and the second output end of the transmission assembly 33 is connected with the input end of the second cutting drum 1125.

[0271] The present application can provide timely lubrication for the components by simultaneously starting and stopping the lubricating pump 2731 with the power components and setting the synchronously operating lubricating pump 2731, reduce the wear and failure caused by impact, and improve the service life and reliability of the equipment. The energy consumption required for driving the lubricating pump 2731 by the separate motor is cancelled, the energy consumption of the whole system is reduced, and the energy utilization efficiency is improved. The circulation of the oil is performed by the lubricating pump 2731 and the cover plate 2711 and the oil circuit provided, without the need for the setting of the external liquid tank, the number of components is also reduced, and the volume of the coal mining machine 11 is further reduced.

[0272] In some embodiments, the coal mining machine 11 further comprises a cooling assembly, the cooling assembly comprising a radiator, a circulating pump and a plurality of cooling sleeves, the machine body 111 is provided with a cooling cavity 288, and the cooling sleeves penetrate through the cooling sleeves; the transmission assembly 33 can comprise a first transmission shaft 331, a transmission torque shaft 332 and a second transmission shaft 333 which are rotatably arranged on the machine body 111 and are arranged at intervals along the extension direction of the machine body 111, the first transmission shaft 331, the transmission torque shaft 332 and the second transmission shaft 333 are all sleeved with the cooling sleeves, and the first transmission shaft 331, the transmission torque shaft 332 and the second transmission shaft 333 pass through the cooling cavity 288 through the cooling sleeves, the outlet of the circulating pump is in communication with the inlet of the cooling cavity 288, the inlet of the radiator is connected with the outlet of the cooling cavity 288, and the outlet of the radiator is in communication with the inlet of the circulating pump, and the radiator is arranged on the side of the machine body 111 away from the driving assembly 31.

[0273] Specifically, the cooling assembly is arranged on the machine body 111, the radiator can be arranged as a plate type radiator, the inlet of the circulating pump is connected with the outlet of the radiator, and the outlet of the radiator is connected with the cooling cavity 288 in the machine body 111, so that the radiator radiates the water in the cooling cavity 288. The transmission shaft and the torque transmission shaft pass through the cooling sleeve and the cooling cavity 288, the transmission shaft and the torque transmission shaft are rotatable relative to the cooling sleeve, the water in the cooling cavity 288 cools the transmission shaft and the torque shaft through the cooling sleeve, and the water in the cooling cavity 288 also carries the heat of the machine body 111 to the radiator for radiation. The cooling sleeve is also sealingly connected with the machine body 111 to prevent water from entering the first cavity 2811, the second cavity 2871, the third cavity 2831 and the transmission cavity 2821, thereby improving the stability of coal mining.

[0274] Further, the transmission assembly 33 further comprises a plurality of gear members 334, one end of the transmission torque shaft 332 extends into the second cavity 2871 and is engaged with the output end of the driving assembly 31, one end of the first transmission shaft 331 extends into the first cavity 2811 and is engaged with the input end of the first cutting drum 1124, one end of the second transmission shaft 333 extends into the third cavity 2831 and is engaged with the input end of the second cutting drum 1125, and a plurality of gear members 334 are arranged between the transmission torque shaft 332 and the first transmission shaft 331 and the second transmission shaft 333 and are sequentially engaged in the length direction of the machine body 111, so that the transmission torque shaft 332 transmits power to the first transmission shaft 331 and the second transmission shaft 333 respectively. Then the first transmission shaft 331 outputs power to the first cutting drum 1124, and the second transmission shaft 333 transmits power to the second cutting drum 1125.

[0275] In some embodiments, the transmission assembly 33 further comprises a first transmission spur gear 3341, a second transmission spur gear 3342, a first transmission member 3343 and a second transmission member 3344, the transmission torque shaft 332 is engaged with the first transmission spur gear 3341 and the second transmission spur gear 3342 on both sides of the machine body 111 in the extension direction, the first transmission spur gear 3341 is engaged with the first transmission member 3343, and the second transmission spur gear 3342 is engaged with the second transmission spur gear 3342.

[0276] Specifically, the transmission torque shaft 332 is rotatably arranged in the machine body 111, and the rear end of the transmission torque shaft 332 is connected with the driving assembly 31, and the front end of the transmission torque shaft 332 has a spline or a gear, which is engaged with the first spur gear and the second spur gear on the left and right sides, so as to drive the first spur gear and the second spur gear to rotate. The first transmission spur gear 3341 and the second transmission spur gear 3342 are rotatably arranged in the machine body 111,

[0277] The first spur gear is engaged with the first transmission component 3343, and the second spur gear is engaged with the second transmission component 3344, thereby driving the first transmission component 3343 and the second transmission component 3344, respectively. The first transmission component 3343 is engaged with the first cutting drum 1124, and the second transmission component 3344 is engaged with the second cutting drum 1125, thereby driving the first cutting drum 1124 and the second cutting drum 1125 through the first spur gear, the second spur gear, the first transmission component 3343 and the second transmission component 3344, respectively, to complete power transmission.

[0278] The first transmission component 3343 and the second transmission component 3344 are arranged to transmit power to the first cutting drum 1124 and the second cutting drum 1125 on both sides, thereby eliminating the need to arrange motors for driving respectively, reducing the volume of the coal mining machine 11 and improving the flexibility of coal mining.

[0279] In some embodiments, the first transmission spur gear 3341 and the second transmission spur gear 3342 each include a gear shaft, a transmission gear and a driven gear, the transmission gear and the driven gear are arranged on the gear shaft, the first transmission component 3343 and the second transmission component 3344 each include a transmission shaft and a plurality of first gears 3348 arranged in sequence in the extension direction of the machine body 111; the transmission gear is engaged with the teeth on the transmission torque shaft 332, and the driven gear is engaged with one of the first gears 3348 adjacent to the transmission torque shaft 332, and one of the first gears 3348 away from the transmission torque shaft 332 is engaged with the transmission shaft.

[0280] Specifically, the gear shaft extends in the front-rear direction and is rotatably arranged on the machine body 111, the plurality of first gears 3348 are rotatably arranged on the machine body 111, and the transmission gear and the driven gear are sleeved on the gear shaft to achieve different transmission ratios. The transmission gear is engaged with the spline or gear at the front end of the transmission torque shaft 332, and the driven gear is engaged with the first gear 3348, thereby driving the first transmission spur gear 3341, the second transmission spur gear 3342 and the plurality of first gears 3348 to rotate by the transmission torque shaft 332, the rear end of the transmission shaft is engaged with the first gear 3348 away from the spur gear, and the front end of the transmission shaft is engaged with the first cutting drum 1124 or the second cutting drum 1125 to complete power transmission.

[0281] In the embodiment, the first transmission spur gear 3341 and the second transmission spur gear 3342 are designed through the gear shaft, the transmission gear and the driven gear, and cooperate with the transmission shaft and the plurality of first gears 3348 of the first transmission component 3343 and the second transmission component 3344 to realize the complex power transmission and speed adjustment, realize the multi-stage transmission, adjust the rotating speed and the torque, and ensure the synchronous operation of the first cutting drum 1124 and the second cutting drum 1125 on the two sides. The gear transmission also improves the transmission efficiency and reduces the energy loss. It is not necessary to set double motors to drive respectively, reduces the system complexity, and is convenient for installation and maintenance.

[0282] Further, the first transmission component 3343, the transmission assembly 33 and the second transmission component 3344 are arranged in sequence in the extension direction of the machine body 111.

[0283] In some embodiments, the number of the first gears 3348 of the first transmission component 3343 is single, and the number of the first gears 3348 of the second transmission component 3344 is plural, or the number of the first gears 3348 of the second transmission component 3344 is single, and the number of the first gears 3348 of the first transmission component 3343 is plural.

[0284] Specifically, the number of gears in the first transmission component 3343 is different from the number of gears in the second transmission component 3344, and the number of the first gears 3348 of the first transmission component 3343 is single, and the number of the first gears 3348 of the second transmission component 3344 cooperating therewith is plural. Or the number of the first gears 3348 of the second transmission component 3344 is single, and the number of the first gears 3348 of the first transmission component 3343 is plural, thereby causing the turning directions of the cutting drums 112 on the two sides to be different, which can improve the coal mining efficiency of the coal mining machine 11, reduce the equipment wear, improve the coal quality, improve the equipment stability, so as to adapt to the complex coal seam conditions, improve the safety and reduce the energy consumption.

[0285] That is, when the transmission torque shaft 332 drives the first cutting drum 1124 and the second cutting drum 1125 on the two sides through the transmission assembly 33, the rotating directions in the first cutting drum 1124 and the second cutting drum 1125 are different, and the reverse rotation of the two cutting drums 112 can realize the bidirectional cutting, so that the coal mining machine 11 can effectively carry out the coal mining operation in the process of advancing and retreating, reduces the round trip times of the coal mining machine 11, and improves the coal mining efficiency. The cutting drum 112 in the reverse rotation can more uniformly cut the coal seam, reduces the local accumulation of the coal seam, and improves the coal seam mining rate.

[0286] Meanwhile, the reverse rotation of the cutting drum 112 can balance the load of the coal mining machine 11, so that the coal mining machine 11 is balanced, and the equipment wear caused by the unidirectional load is reduced. The design can prolong the service life of the equipment and reduce the maintenance cost. The force of the coal mining machine 11 is balanced, that is, the reverse rotation of the cutting drum 112 can reduce the vibration of the coal mining machine 11 during operation, or in other words, the reverse rotation of the two cutting drums 112 can balance the reaction force generated during the mining process, reduce the lateral deviation of the coal mining machine 11, and improve the operation stability of the equipment. The reverse rotation of the cutting drum 112 can reduce the unbalanced load of the coal mining machine 11 during operation.

[0287] Specifically, the speed reducer 117 is arranged in the machine body 111, the rear end of the cutting drum 112 is connected with the output end of the rear end of the speed reducer 117, the transmission shaft is provided with a spline at the front end and the rear end, the input end of the speed reducer 117 is provided with an existing spline or gear, and then the input end of the speed reducer 117 is meshed with the front end of the transmission shaft, so that the power transmission to the cutting drum 112 is completed.

[0288] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0289] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0290] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0291] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0292] In the present application, the terms "one embodiment", "some embodiments", "an embodiment", "one specific embodiment", "certain embodiments", and the like, mean that the particular feature, structure, material, or characteristic following the term is included in at least one embodiment or implementation of the present application. The illustrative examples of the present application described herein should not be construed as being limiting, but merely illustrative. Additionally, the described features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or implementations. In addition, the order in which the described features, structures, materials, or characteristics are presented does not necessarily limit the scope of the application, unless specifically stated and limited otherwise.

[0293] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present application, and that changes, modifications, substitutions and variations can be made therein by those skilled in the art without departing from the scope of the present application.

Claims

1. A vertically fed thin coal seam mining system, characterized in that, include: A coal mining machine (11) includes a machine body (111) and a cutting drum (112). The cutting drum (112) is rotatably mounted on the machine body (111). The cutting drum (112) includes a cylinder (1121), an end cover (1122), and a plurality of cutting teeth (1123). The plurality of cutting teeth (1123) are arranged on the cylinder (1121) and the end cover (1122). The end cover (1122) has a middle region (11221) and an annular edge region (11222). The middle region (11221) is located away from the coal mining face (100) relative to the annular edge region (11222). A conveyor (13) is located on the side of the coal mining machine (11) away from the coal mining face (100). The conveyor (13) extends along the left and right direction of the coal mining face (100). The conveyor (13) is provided with a guide rail (131). The coal mining machine (11) is slidably connected to the guide rail (131). A roof support frame (15) is provided on the side of the conveyor (13) away from the coal mining machine (11). A propulsion device (19) is connected between the roof support frame (15) and the conveyor (13). The propulsion device (19) is used to push the conveyor (13) and the coal mining machine (11) toward the coal mining face (100). The traction device includes a traction chain and a traction drive. The traction chain is connected to the coal mining machine (11), and the traction chain and the traction drive are connected in a transmission connection to drive the coal mining machine (11) to move along the guide rail (131). The controller is electrically connected to the coal mining machine (11), the propulsion device (19) and the traction device. The controller is used to regulate the operation of the coal mining machine (11), the conveyor (13) and the traction device during the coal mining process. The coal mining machine (11) also includes a guide frame (113) and a sliding frame (114). The traction chain is connected to the sliding frame (114). The guide frame (113) is provided with a first guide groove (1131). The first guide groove (1131) is slidably connected to the guide rail (131). The guide rail (131) is provided with a first inner cavity (1311). The traction chain is movably inserted through the first inner cavity (1311) so as to drive the coal mining machine (11) to move along the guide rail (131) through the sliding frame (114). The guide frame (113) includes a mounting base and a slider (1133). The mounting base is connected to the body (111). The slider (1133) is movable relative to the mounting base along the height direction of the body (111). The first guide groove (1131) is provided at the bottom of the slider (1133). The guide frame (113) further includes a guide hook (1134), which is movable relative to the mounting base along the height direction of the body (111). The guide rail (131) is provided with a second guide groove (1312), which is located on the side of the guide rail (131) close to the body (111). The guide hook (1134) includes a hook head (11341), which is slidably connected to the second guide groove (1312). The guide hook (1134) also includes a root (11342) which is connected to the slider (1133). The mounting base includes a first sliding portion (11321) extending along the height direction of the body (111). One of the root (11342) and the slider (1133) is slidably connected to the first sliding portion (11321). The guide hook (1134) also includes a limiting part (11343), the top end of which is connected to the bottom end of the root (11342), and the bottom end of which is inclined toward the mounting base and extends below the mounting base, so as to limit the movement of the guide hook (1134) in the height direction of the body (111).

2. The vertical feed thin coal seam mining system according to claim 1, characterized in that, The vertical feed thin coal seam mining system also includes an inclination adjustment component, which further includes a front-to-back adjustment component (211) and a left-to-right adjustment component (212). The front-to-back adjustment component (211) is located between the conveyor (13) and the propulsion device (19) and is used to adjust the tilt angle of the conveyor (13) in the vertical direction of the bottom plate (200) so that the conveyor (13) drives the coal mining machine (11) to adjust the tilt angle in the front-to-back direction of the bottom plate (200). The coal mining machine (11) includes a first slipper (1151) located at the bottom of the machine body (111). The left and right adjustment component (212) is located on the machine body (111) and connected to the first slipper (1151), and is used to adjust the distance between the first slipper (1151) and the machine body (111) in the height direction, so as to adjust the tilt angle of the machine body (111) in the left and right direction of the base plate (200).

3. The vertical feed thin coal seam mining system according to claim 2, characterized in that, The transport machine (13) has a conveyor frame (132), and the propulsion device (19) further includes a pushing jack (191) and a connecting rod (192). The pushing jack (191) is mounted on the top plate support frame (15). One end of the connecting rod (192) is connected to the pushing jack (191), and the other end of the connecting rod (192) is rotatably connected to the conveyor frame (132). The front and rear adjustment assembly (211) includes an angle jack (2111). The jack (2111) is located above the connecting rod (192) and the axis of the angle jack (2111) intersects the axis of the connecting rod (192). One end of the angle jack (2111) is rotatably connected to the body (111), and the other end of the angle jack (2111) is rotatably connected to the connecting rod (192). The angle jack (2111) is used to adjust the tilt angle of the transport machine (13) in the front-rear direction of the base plate (200).

4. The vertical feed thin coal seam mining system according to claim 2, characterized in that, The left and right adjustment assembly (212) includes a first hydraulic cylinder (2121) and a first mounting base (2122). The first hydraulic cylinder (2121) includes a first fixed part (21211) and a first telescopic part (21212). The first fixed part (21211) is connected to the body (111). The first telescopic part (21212) is telescopically connected to the first fixed part (21211) along the height direction of the body (111). The first telescopic part (21212) is connected to the first mounting base (2122). The first slipper (1151) is disposed on the first mounting base (2122).

5. The vertical feed thin coal seam mining system according to claim 4, characterized in that, The coal mining machine (11) includes a protective cover (213) connected to the machine body (111). The protective cover (213) covers at least a portion of the first hydraulic cylinder (2121). A third guide groove (2131) extending along the height direction of the machine body (111) is defined between the protective cover (213) and the machine body (111). At least a portion of the first hydraulic cylinder (2121) is disposed in the third guide groove (2131). The third guide groove (2131) is used to limit the extension and retraction of the first hydraulic cylinder (2121) along the height direction of the machine body (111).

6. The vertical feed thin coal seam mining system according to claim 4, characterized in that, The coal mining machine (11) also includes a hydraulic support assembly (214) and a third slipper (1153). The hydraulic support assembly (214) is located on the machine body (111) and connected to the third slipper (1153). The third slipper (1153) corresponds to the first slipper (1151) in the width direction of the machine body (111) and is located on the same side of the machine body (111). The hydraulic support assembly (214) is used to adjust the distance between the third slipper (1153) and the machine body (111) in the height direction.

7. The vertical feed thin coal seam mining system according to claim 6, characterized in that, The hydraulic support assembly (214) includes a second hydraulic cylinder (2141) and a second mounting base (2142). The second hydraulic cylinder (2141) includes a second fixed part (21411) and a second telescopic part (21412). The second fixed part (21411) is connected to the body (111). The second telescopic part (21412) is telescopically connected to the second fixed part (21411) along the height direction of the body (111). The second telescopic part (21412) is connected to the second mounting base (2142). The third slipper (1153) is provided on the second mounting base (2142).

8. The vertical feed thin coal seam mining system according to any one of claims 1 to 7, characterized in that, The fuselage (111) includes multiple coal guiding zones (116), which extend through the fuselage (111) along its width and are spaced apart along its length. The coal mining machine (11) also includes a coal guiding section (23), which is connected to the machine body (111). The coal guiding section (23) includes a coal guiding plate (231), which includes an arc-shaped body (2311) and a coal guiding connector (2312). The side of the arc-shaped body (2311) adjacent to the cylinder (1121) is a concave arc surface. The coal guiding connector (2312) is connected to the arc-shaped body (2311). The connector (2312) has a mating part, which is connected to the machine body (111). The coal guide plate (231) can move relative to the machine body (111) toward the cylinder (1121) or away from the cylinder (1121) through the mating part to adjust the gap between the cylinder (1121) and the coal guide plate (231). There are multiple coal guide parts (23), and each of the multiple coal guide parts (23) corresponds to one of the multiple cylinders (1121).

9. The vertical feed thin coal seam mining system according to claim 8, characterized in that, The coal guiding section (23) further includes an adjusting plate (232) and a first rotating shaft (233). The adjusting plate (232) is connected to the arc-shaped body (2311) through the first rotating shaft (233). The adjusting plate (232) and the coal guiding connector (2312) are arranged opposite to each other on both sides of the arc-shaped body (2311) in the height direction of the machine body (111). The axis of the first rotating shaft (233) is parallel to the width direction of the machine body (111).

10. The vertical feed thin coal seam mining system according to claim 9, characterized in that, The adjusting plate (232) has an initial state and a rotating state. In the initial state, the side of the adjusting plate (232) adjacent to the cylinder (1121) is smoothly connected to the side of the arc-shaped body (2311) adjacent to the cylinder (1121). In the rotating state, the adjusting plate (232) rotates toward the cylinder (1121), and the rotation angle of the adjusting plate (232) is less than or equal to 60°.

11. The vertical feed thin coal seam mining system according to claim 7, characterized in that, The coal mining machine (11) also includes a water spray assembly (25), which includes an adjusting component (251) and a spray head (252). The adjusting component (251) has a water inlet (2511) for introducing water. The adjusting component (251) includes a heat exchange section (253) which is located in the lubrication oil passage of the coal mining machine (11) to cool the lubrication oil in the lubrication oil passage. The spray head (252) is located on the cylinder (1121) and is connected to the adjusting component (251) to form water mist on the cutting surface of the cylinder (1121).

12. The vertical feed thin coal seam mining system according to claim 7, characterized in that, The coal mining machine (11) further includes a top cover assembly and a lubrication assembly; the machine body (111) includes a first shell (281), a transmission shell (282), and a third shell (283) arranged sequentially at intervals, the first shell (281) having a first cavity (2811), the transmission shell (282) having a transmission cavity (2821), and the third shell (283) having a third cavity (2831); the top cover assembly includes multiple cover plates (2711), the first shell (281), the transmission shell (282), and the third shell (283) are all provided with detachably connected cover plates (2711), and the cover plates (2711) are used for The first cavity (2811), transmission cavity (2821), or third cavity (2831) can be opened or sealed. The lubrication assembly is detachably mounted on the body (111). The lubrication assembly includes multiple lubrication pumps (2731). The cover plate (2711) is provided with a fluid passage (27111). The output end of the lubrication pump (2731) is connected to the inlet of the fluid passage (27111) of the cover plate (2711). The outlet of the fluid passage (27111) of the cover plate (2711) is directed towards the bottom of the first cavity (2811), transmission cavity (2821), and third cavity (2831).

13. The vertical feed thin coal seam mining system according to claim 12, characterized in that, The coal mining machine (11) also includes an oil nozzle (284), the cover plate (2711) is detachably connected to the oil nozzle (284), and the oil nozzle (284) is connected to the outlet of the liquid passage (27111). The outlet of the oil nozzle (284) faces the bottom of the machine body (111), and at least one cover plate (2711) is provided on the transmission housing (282).

14. The vertical feed thin coal seam mining system according to claim 13, characterized in that, The first shell (281), the transmission shell (282) and the third shell (283) are each provided with a corresponding oil return channel (285). The outlet of the oil return channel (285) is connected to the input end of the lubrication pump (2731). The inlet of the oil return channel (285) is located at the bottom of the corresponding first cavity (2811), transmission cavity (2821) or third cavity (2831). And / or, the top of the first shell (281), the transmission shell (282) and the third shell (283) are provided with corresponding connected oil outlet channels (286), and the inlet of the oil outlet channel (286) is also connected to the output end of the lubrication pump (2731), and the outlet of the oil outlet channel (286) is located at the top of the corresponding first cavity (2811), transmission cavity (2821) or third cavity (2831).

15. The vertical feed thin coal seam mining system according to claim 12, characterized in that, The cutting drum (112) includes a first cutting drum (1124) and a second cutting drum (1125) spaced apart from the machine body (111). The coal mining machine (11) also includes a drive assembly (31) and a transmission assembly (33) connected to the machine body (111). The machine body (111) also includes a second housing (287), which has a second cavity (2871). The lubrication pump (2731) is located in the second housing (287), and the drive assembly (31) is located in the second housing (287). Inside cavity (2871), the first cutting cylinder (1124) is at least partially disposed in the first cavity (2811), the second cutting cylinder (1125) is at least partially disposed in the third cavity (2831), and the transmission assembly (33) is at least partially disposed in the transmission cavity (2821). The drive assembly (31), the first cutting cylinder (1124), the second cutting cylinder (1125) and the transmission assembly (33) mesh with the power input end of the lubrication pump (2731) to provide power to the lubrication pump (2731).

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