Electric traction isohypse coal cutter and thin seam coal mining system

Abstract

The application discloses an electric traction isohypse coal mining machine and a thin coal seam mining system. The electric traction isohypse coal mining machine comprises a double-output motor, a first cutting drum and a second cutting drum, a first traction module and a second traction module. The double-output motor has a first output end and a second output end. The first cutting drum and the second cutting drum are respectively in transmission connection with the first output end and the second output end. The first traction module is arranged close to the first output end. The first traction module comprises a first semi-permanent magnet direct drive motor, a first planetary transmission module, a first transmission assembly and a first sprocket which are sequentially in transmission connection in a direction parallel to the central axis of the first cutting drum. The first sprocket and the second sprocket are used for cooperating with a gear to traction the coal mining machine along the direction of a roadway. The electric traction isohypse coal mining machine has the advantages of compact structure, small volume, large coal passing space and the capability of realizing vertical tool feeding at any position.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mine machinery and equipment, and particularly relates to an electric traction isohigh coal mining machine and a thin coal seam coal mining system. BACKGROUND

[0002] Traditional rocker arm type thin coal seam coal mining machines have large sizes and complex structures, and the isohigh thin coal seam coal mining machine proposed in the related art has the advantages of simple structure and strong cutting power, but due to the structural limitation, it cannot realize vertical tooling at any position of the roadway, and the chain traction will inevitably cause problems such as chain winding, wear, and loose chain during long distance cutting. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application provide an electric traction isohigh coal mining machine, which realizes small volume electric traction driving and vertical tooling at any position of the roadway.

[0004] Another aspect of the embodiments of the present application provides a thin coal seam coal mining system.

[0005] The electric traction isohigh coal mining machine of the embodiments of the present application comprises: a double-output motor, the double-output motor having a first output end and a second output end; a first cutting drum and a second cutting drum, the first cutting drum and the second cutting drum being respectively in transmission connection with the first output end and the second output end, and the central axis of the first cutting drum being parallel to the central axis of the second cutting drum; a first traction module, the first traction module being arranged adjacent to the first output end, and the first traction module comprising a first semi-permanent magnet direct drive motor, a first planetary transmission module, a first transmission assembly, and a first sprocket which are sequentially in transmission connection in a direction parallel to the central axis of the first cutting drum; and a second traction module, the second traction module being arranged adjacent to the second output end, and the second traction module comprising a second semi-permanent magnet direct drive motor, a second planetary transmission module, a second transmission assembly, and a second sprocket which are sequentially in transmission connection in a direction parallel to the central axis of the second cutting drum; wherein the first sprocket and the second sprocket are used to connect a traction chain, and the traction chain is used to pull the coal mining machine in the direction of the roadway.

[0006] The electric traction isohigh coal mining machine according to the embodiments of the present application has a compact structure, a small volume, and a large coal passing space, and can realize vertical tooling at any position. The first semi-permanent magnet direct drive motor and the first planetary transmission module of the first traction module can realize stepless frequency conversion speed regulation, and the traction force is large, which effectively avoids the problems of chain winding, wear, and loose chain caused by insufficient traction force during long distance cutting.

[0007] In some embodiments, an end of the first cutting drum distal to the first output end is aligned with an end of the second cutting drum distal to the second output end in a direction perpendicular to a central axis of the first cutting drum.

[0008] In some embodiments, the first transmission assembly includes a first output gear connected to the output end of the first planetary transmission module, a first mating gear engaged with the first output gear, and a first transmission shaft in driving connection with the first mating gear, the first transmission shaft being connected to the first sprocket; and the second transmission assembly includes a second output gear connected to the output end of the second planetary transmission module, a second mating gear engaged with the second output gear, and a second transmission shaft in driving connection with the second mating gear, the second transmission shaft being connected to the second sprocket.

[0009] In some embodiments, the central axis of the first output end and the central axis of the second output end are both perpendicular to the central axis of the first cutting drum, and the electric traction high-sill coal mining machine includes a first cutting transmission module and a second cutting transmission module, the first cutting drum being in driving connection with the first output end through the first cutting transmission module, and the second cutting drum being in driving connection with the second output end through the second cutting transmission module.

[0010] In some embodiments, the first cutting transmission module includes a first bevel gear and a second bevel gear engaged with each other, the first bevel gear being connected to the first output end and the second bevel gear being connected to the first cutting drum, the central axis of the first bevel gear being perpendicular to the central axis of the second bevel gear; and the second cutting transmission module includes a third bevel gear and a fourth bevel gear engaged with each other, the third bevel gear being connected to the second output end and the fourth bevel gear being connected to the second cutting drum, the central axis of the third bevel gear being perpendicular to the central axis of the fourth bevel gear.

[0011] In some embodiments, the first cutting transmission module further comprises a first torque shaft, a first spur gear, a second spur gear and a third planetary transmission module, one end of the first torque shaft is connected with the second bevel gear, the other end of the first torque shaft is connected with the first spur gear, the second spur gear is engaged with the first spur gear, the central axis of the second spur gear is located on the side of the central axis of the first spur gear away from the second cutting drum, the third planetary transmission module is in transmission connection with the second spur gear, and the output end of the third planetary transmission module is in transmission connection with the first cutting drum to drive the first cutting drum to rotate; the second cutting transmission module further comprises a second torque shaft, a third spur gear, a fourth spur gear and a fourth planetary transmission module, one end of the second torque shaft is connected with the fourth bevel gear, the other end of the second torque shaft is connected with the third spur gear, the fourth spur gear is engaged with the third spur gear, the central axis of the fourth spur gear is located on the side of the central axis of the third spur gear away from the first cutting drum, the fourth planetary transmission module is in transmission connection with the fourth spur gear, and the output end of the fourth planetary transmission module is in transmission connection with the second cutting drum to drive the second cutting drum to rotate.

[0012] In some embodiments, a planetary transmission fixing frame is further included, the extension direction of the planetary transmission fixing frame is parallel to the axial direction of the double-output motor, the planetary transmission fixing frame is connected with the third planetary transmission module and the fourth planetary transmission module, the planetary transmission fixing frame, the first cutting drum and the second cutting drum are located on the same side of the double-output motor, and the planetary transmission fixing frame and the double-output motor are spaced apart to form a coal passing window.

[0013] In some embodiments, an electric control module, a lubrication module and a cooling module are further included, the electric control module, the lubrication module and the cooling module are sequentially arranged on the side of the double-output motor away from the first cutting drum in the direction perpendicular to the axial direction of the first cutting drum.

[0014] In some embodiments, the maximum traction of the first traction module or the second traction module is greater than or equal to 400KN; and / or the power of the double-output motor is greater than or equal to 500kW.

[0015] Another aspect of the present application provides a thin coal seam mining system, comprising the electric traction contour coal mining machine according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the electric traction contour coal mining machine according to an embodiment of the present application.

[0017] Figure 2It is the internal structure schematic diagram of the electric traction isohypse coal mining machine of the embodiment of the present application.

[0018] Figure 3 It is the working schematic diagram of the thin seam coal mining system of the embodiment of the present application. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] The embodiments of the present application are described below according to Figures 1-3 The electric traction isohypse coal mining machine and the thin seam coal mining system of the embodiment of the present application are characterized in that they comprise a double-output motor 4, a first cutting drum 1, a second cutting drum 7, a first traction module 2 and a second traction module 6.

[0021] The double-output motor 4 has two output ends: a first output end and a second output end. The first cutting drum 1 and the second cutting drum 7 are respectively drivingly connected to the first output end and the second output end of the double-output motor 4, and the central axis of the first cutting drum 1 is parallel to the central axis of the second cutting drum 7. The first output end of the double-output motor 4 drives the first cutting drum 1 to rotate, and the second output end of the double-output motor 4 drives the second cutting drum 7 to rotate. The first cutting drum 1 and the second cutting drum 7 rotate, and the cutting teeth thereon cut the coal seam to cut the coal blocks on the coal seam.

[0022] In operation, the electric traction isohypse coal mining machine moves along the roadway. In order to pull the electric traction isohypse coal mining machine along the direction of the roadway, the electric traction isohypse coal mining machine comprises the first traction module 2 and the second traction module 6.

[0023] The first traction module 2 is arranged adjacent to the first output end of the double-output motor 4. As shown in Figure 2 , the first traction module 2 comprises a first semi-permanent magnet direct drive motor 202, a first planetary transmission module 203, a first transmission assembly and a first sprocket 10 which are sequentially drivingly connected in a direction parallel to the central axis of the first cutting drum 1.

[0024] The second traction module 6 is arranged adjacent to the second output end of the double-output motor 4, as shown in Figure 2 , the second traction module 6 comprises a second semi-permanent magnet direct drive motor, a second planetary transmission module, a second transmission assembly and a second sprocket 10 which are sequentially drivingly connected in a direction parallel to the central axis of the second cutting drum. The structure of the second traction module 6 is similar to that of the first traction module 2, so the components of the second traction module 6 are not marked one by one in Figure 2 , and the second traction module 6 can be understood by referring to the first traction module 2.

[0025] The first sprocket 10 and the second sprocket 10 are used to connect a traction chain, and the traction chain is used to pull the electric traction contour coal mining machine in the direction of the roadway.

[0026] The electric traction contour coal mining machine according to the embodiment of the present application has a compact structure, a small volume, a large coal passing space, and can realize vertical tooling at any position. The first half-permanent magnet direct drive motor and the first planetary transmission module of the first traction module can realize stepless frequency conversion speed regulation, and the traction force is large, which effectively avoids the problems of chain winding, wear and loose chain caused by insufficient traction force during long distance cutting.

[0027] In some embodiments, as shown in Figure 1 and Figure 2 , the first cutting drum 1 and the first traction module 2 are structurally symmetrical with the second cutting drum 7 and the second traction module 6 relative to the double-output motor 4.

[0028] In some embodiments, as shown in Figure 1 and Figure 2 , one end of the first cutting drum 1 away from the first output end of the double-output motor 4 (the left end of the first cutting drum 1 in Figure 2 ) is aligned with one end of the second cutting drum 7 away from the second output end of the double-output motor 4 (the left end of the second cutting drum 7 in Figure 2 ) in a direction perpendicular to the central axis of the first cutting drum 1 (or the central axis of the second cutting drum 7). In the embodiment shown in Figure 2 , the central axis of the first cutting drum 1 and the central axis of the second cutting drum 7 extend in the left-right direction.

[0029] In some embodiments, as shown in Figure 2 , the first transmission assembly of the first traction module 2 includes a first output gear 204, a first counter gear 205, and a first transmission shaft 206. The first output gear 204 is connected to the output end of the first planetary transmission module 203. The first output gear 204 is engaged with the first counter gear 205. The first counter gear 205 is in transmission connection with the first transmission shaft 206. The first transmission shaft 206 is connected to the first sprocket 10.

[0030] As shown in Figure 2 , the first half-permanent magnet direct drive motor 202, the first planetary transmission module 203, the first output gear 204, the first counter gear 205, the first transmission shaft 206, and the first sprocket 10 of the first traction module 2 are arranged in sequence in the left-to-right direction. The first traction module 2 is located on the right side of the first cutting drum 1 as a whole, and is located on the side away from the second output end of the first output end of the double-output motor 4 as a whole. The first traction module 2 can realize stepless frequency conversion speed regulation, and the traction force is large.

[0031] The second transmission assembly of the second traction module 6 comprises a second output gear, a second mating gear and a second transmission shaft, the second output gear is connected with the output end of the second planetary transmission module, the second output gear is engaged with the second mating gear, the second mating gear is in transmission connection with the second transmission shaft, and the second transmission shaft is connected with the second sprocket. The structure of the second transmission assembly can be referred to the first transmission assembly, and the present application will not be repeated here.

[0032] As shown in Figure 2 , the first traction module 2 and the second traction module 6 are symmetrically arranged relative to the structure of the double-output motor 4.

[0033] In some embodiments, as shown in Figure 2 , the central axis of the first output end and the central axis of the second output end of the double-output motor 4 are both perpendicular to the central axis of the first cutting drum 1 (or the central axis of the second cutting drum 7), and the electric traction coal mining machine comprises a first cutting transmission module 3 and a second cutting transmission module 5, the first cutting drum 1 is in transmission connection with the first output end through the first cutting transmission module 3, and the second cutting drum 7 is in transmission connection with the second output end through the second cutting transmission module 5.

[0034] Specifically, the axial direction of the double-output motor 4 is perpendicular to the central axis of the first cutting drum 1 (or the central axis of the second cutting drum 7), and the central axis of the first output end and the central axis of the second output end coincide. The double-output motor 4 can drive the first output end and the second output end to output kinetic energy.

[0035] As shown in Figure 1 , the first cutting transmission module 3 comprises a first bevel gear 303 and a second bevel gear 305 engaged with each other, the central axis of the first bevel gear 303 coincides with the central axis of the first output end, and the first bevel gear 303 is connected with the first output end. Specifically, a first spline shaft 302 is arranged on the end face of the first output end, the first spline shaft 302 is connected with the first bevel gear 303 through a gear shaft. The first bevel gear 303 is further provided with a first bearing 304 away from the first output end. The kinetic energy output by the first output end is transmitted to the first bevel gear 303 through the first spline shaft 302 and the gear shaft, and the first bevel gear 303 is driven to rotate.

[0036] The second bevel gear 305 is connected to the first cutting drum 1, and the central axis of the first bevel gear 303 is perpendicular to the central axis of the second bevel gear 305. A second bearing 306 is also provided on the side of the second bevel gear 305 away from the first cutting drum 1. Since the first bevel gear 303 and the second bevel gear 305 mesh with each other, the rotation of the first bevel gear 303 can drive the rotation of the second bevel gear 305. Because the central axis of the first bevel gear 303 is perpendicular to the central axis of the second bevel gear 305, the direction of kinetic energy transmission is reversed, thus realizing the dual-output motor 4 driving the first cutting drum 1.

[0037] Furthermore, the first cutting transmission module 3 also includes a first torque shaft 307, a torque shaft protective sleeve 308, a first spur gear 309, a third bearing 310, a fourth bearing 311, a second spur gear 312, a second splined shaft 313, and a third planetary transmission module. Figure 2 As shown, one end of the first torque shaft 307 ( Figure 2 The right end of the first torque shaft 307 is connected to the second bevel gear 305, and the other end of the first torque shaft 307 is connected to the second bevel gear 305. Figure 2 The left end of the first spur gear 307 is connected to the first spur gear 309, and the torque shaft protective sleeve 308 is fitted onto the first torque shaft 307. The third bearing 310 is located on the side of the first spur gear 309 away from the second bevel gear 305 and is connected to the first torque shaft 307. The second spur gear 312 meshes with the first spur gear 309, as shown in the image. Figure 2 As shown, the central axis of the second spur gear 312 is located on the side of the central axis of the first spur gear 309 away from the second cutting roller 7.

[0038] The fourth bearing 311 is located on the side of the second spur gear 312 away from the first cutting roller 1. Figure 2 (the right end of the middle) and one end of the second spline shaft 313 ( Figure 2 The right end of the first cutting roller 1 is connected to the first cutting roller 1. The second spur gear 312 is connected to the third planetary transmission module via the second spline shaft 313. The output end of the third planetary transmission module is connected to the first cutting roller 1 to drive the first cutting roller 1 to rotate.

[0039] like Figure 2As shown, the third planetary transmission module specifically comprises a first-stage transmission inner ring gear 314, a fifth bearing 315, a first-stage transmission planetary gear 316, a first-stage transmission planetary carrier 318, a first-stage planetary gear bearing 319, a first-stage transmission sun gear 320, a second-stage transmission planetary gear 321, a second-stage planetary carrier support bearing I 322, a second-stage sun gear 323, a second-stage planetary carrier 324, and a second-stage planetary carrier support bearing II 325. The first-stage transmission inner ring gear 314, the fifth bearing 315, the first-stage transmission planetary gear 316, the first-stage transmission planetary carrier 318, the first-stage planetary gear bearing 319, and the first-stage transmission sun gear 320 form a first-stage planetary assembly, and the second-stage transmission inner ring gear 317, the second-stage transmission planetary gear 321, the second-stage planetary carrier support bearing I 322, the second-stage sun gear 323, the second-stage planetary carrier 324, and the second-stage planetary carrier support bearing II 325 form a second-stage planetary assembly. The first-stage planetary assembly and the second-stage planetary assembly are opposite in the axial direction of the first cutting drum 1. Specifically, the first-stage transmission planetary gear 316 is in transmission connection with the first-stage transmission sun gear 320, and the first-stage transmission sun gear 320 is arranged on the first-stage transmission planetary carrier 318. The first-stage transmission planetary carrier 318 is connected with the second-stage sun gear 323 through a connecting shaft, the connecting shaft is supported by the second-stage planetary carrier support bearing I 322, the second-stage sun gear 323 is in transmission connection with the second-stage transmission planetary gear 321, and the second-stage transmission planetary gear 321 is arranged on the second-stage planetary carrier 324.

[0040] The second cutting transmission module 5 comprises a third bevel gear and a fourth bevel gear in mesh with each other, the third bevel gear is connected with the second output end, the fourth bevel gear is connected with the second cutting drum 7, and the central axis of the third bevel gear and the central axis of the fourth bevel gear are perpendicular to each other.

[0041] The second cutting transmission module 5 further comprises a second torque shaft, a third spur gear, a fourth spur gear, and a fourth planetary transmission module. One end of the second torque shaft is connected with the fourth bevel gear, the other end of the second torque shaft is connected with the third spur gear, the fourth spur gear is in mesh with the third spur gear, the central axis of the fourth spur gear is located on the side of the central axis of the third spur gear away from the first cutting drum, the fourth planetary transmission module is in transmission connection with the fourth spur gear, and the output end of the fourth planetary transmission module is in transmission connection with the second cutting drum to drive the second cutting drum to rotate.

[0042] The detailed structure of the second cutting transmission module 5 can refer to the first cutting transmission module 3, and the present application will not be described here.

[0043] In some embodiments, as Figure 2As shown, the electric traction contour mining machine also includes a planetary transmission fixing frame 8. The extension direction of the planetary transmission fixing frame 8 is parallel to the axis of the dual-output motor 4. The planetary transmission fixing frame 8 is connected to the third planetary transmission module and the fourth planetary transmission module. The planetary transmission fixing frame 8, the first cutting drum 1, and the second cutting drum 7 are located on the same side of the dual-output motor 4. Figure 1 (On the left side of the image), the planetary transmission mounting bracket 8 and the dual-output motor 4 are spaced apart to form a coal passage window 15. The arrangement of the planetary transmission mounting bracket 8 enhances the structural lightness of the electric traction equal-height coal mining machine.

[0044] like Figure 2 As shown, the planetary transmission fixing frame 8 is located on the side of the first cutting drum 1 and the second cutting drum 7 adjacent to the dual-output motor 4. There are no extra structures between the cutting drums, the coal passage space is large, and vertical cutting can be achieved at any position of the coal mining face.

[0045] like Figure 1 As shown, the electric traction contour mining machine also includes a frame 12, and the dual-output motor 4, the first cutting transmission module 3, the second cutting transmission module 5, the first traction module 2 and the second traction module 6 are all mounted on the frame 12.

[0046] In some embodiments, the electrically traction equal-height coal mining machine further includes an electrical control module 11, a lubrication module 13, and a cooling module 14. The electrical control module 11, lubrication module 13, and cooling module 14 are all mounted on the frame, and, as... Figure 1 As shown, the electronic control module 11, the lubrication module 13, and the cooling module 14 are sequentially arranged on the side of the dual-output motor 4 away from the first cutting drum 1 along a direction perpendicular to the axial direction of the first cutting drum 1.

[0047] In some alternative embodiments, the maximum traction force of the first traction module 2 or the second traction module 6 is greater than or equal to 400 kN.

[0048] In some alternative embodiments, the power of the dual-output motor 4 is greater than or equal to 500kW, which can achieve a maximum cutting power of 500kW for a single cutting drum.

[0049] A thin coal seam mining system according to another embodiment of the present invention includes an electrically traction contour mining machine according to any of the above embodiments.

[0050] like Figure 1 As shown, during operation, the first cutting drum 1 and the second cutting drum 7 of the electric traction contour mining machine are arranged at intervals in the traction direction of the roadway (as indicated by the arrows in the figure) and facing the coal face. The electric traction contour mining machine provided in this embodiment of the invention can achieve vertical cutting at any position of the coal face. During the cutting operation, the first traction module 2 and the second traction module 6 cooperate with the track laid in the roadway to guide the electric traction contour mining machine in the traction direction (as indicated by the arrows in the figure).Figure 3 Figure 3 The coal cutter 1 reciprocally moves in the left-right direction (in the left-right direction in the figure) to cut the coal.

[0051] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0052] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "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 explicitly specified and limited.

[0053] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, 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 or interaction relationship of two elements, unless otherwise explicitly 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.

[0054] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0055] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0056] Although the embodiments of the present disclosure 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 disclosure, and the ordinary skilled person in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. An electrically traction contour mining machine, characterized in that, include: A dual-output motor, wherein the dual-output motor has a first output terminal and a second output terminal; The first cutting roller and the second cutting roller are respectively connected to the first output end and the second output end in a driving connection. The central axis of the first cutting roller is parallel to the central axis of the second cutting roller. The first traction module is disposed near the first output end. The first traction module includes a first semi-permanent magnet direct drive motor, a first planetary transmission module, a first transmission component, and a first sprocket that are sequentially connected in a direction parallel to the central axis of the first cutting drum. The second traction module is located near the second output end. The second traction module includes a second semi-permanent magnet direct drive motor, a second planetary transmission module, a second transmission assembly, and a second sprocket that are sequentially connected in a direction parallel to the central axis of the second cutting drum. The first sprocket and the second sprocket are used to cooperate with gears to pull the coal mining machine along the roadway direction; The electric traction contour mining machine further includes: a planetary transmission fixing frame, the extension direction of which is parallel to the axial direction of the dual-output motor, the planetary transmission fixing frame, the first cutting drum and the second cutting drum being located on the same side of the dual-output motor, and the planetary transmission fixing frame and the dual-output motor being spaced apart to form a coal passage window.

2. The electrically driven contour mining machine according to claim 1, characterized in that, The end of the first cutting roller furthest from the first output end is aligned with the end of the second cutting roller furthest from the second output end in a direction perpendicular to the central axis of the first cutting roller.

3. The electrically driven contour mining machine according to claim 1, characterized in that, The first transmission assembly includes a first output gear, a first mating gear, and a first transmission shaft. The first output gear is connected to the output end of the first planetary transmission module. The first output gear meshes with the first mating gear. The first mating gear is connected to the first transmission shaft. The first transmission shaft is connected to the first sprocket. The second transmission assembly includes a second output gear, a second mating gear, and a second transmission shaft. The second output gear is connected to the output end of the second planetary transmission module. The second output gear meshes with the second mating gear. The second mating gear is connected to the second transmission shaft. The second transmission shaft is connected to the second sprocket.

4. The electrically driven contour mining machine according to claim 1, characterized in that, The central axis of the first output end and the central axis of the second output end are both perpendicular to the central axis of the first cutting drum. The electric traction contour mining machine includes a first cutting transmission module and a second cutting transmission module. The first cutting drum is connected to the first output end through the first cutting transmission module, and the second cutting drum is connected to the second output end through the second cutting transmission module.

5. The electrically driven contour mining machine according to claim 4, characterized in that, The first cutting transmission module includes a first bevel gear and a second bevel gear that mesh with each other. The first bevel gear is connected to the first output end, and the second bevel gear is connected to the first cutting drum. The central axis of the first bevel gear and the central axis of the second bevel gear are perpendicular to each other. The second cutting transmission module includes a third bevel gear and a fourth bevel gear that mesh with each other. The third bevel gear is connected to the second output end, and the fourth bevel gear is connected to the second cutting roller. The central axis of the third bevel gear is perpendicular to the central axis of the fourth bevel gear.

6. The electrically driven contour mining machine according to claim 5, characterized in that, The first cutting transmission module further includes a first torque shaft, a first spur gear, a second spur gear, and a third planetary transmission module. One end of the first torque shaft is connected to the second bevel gear, and the other end of the first torque shaft is connected to the first spur gear. The second spur gear meshes with the first spur gear. The central axis of the second spur gear is located on the side of the central axis of the first spur gear away from the second cutting drum. The third planetary transmission module is driven by the second spur gear, and the output end of the third planetary transmission module is driven by the first cutting drum to drive the first cutting drum to rotate. The second cutting transmission module further includes a second torque shaft, a third spur gear, a fourth spur gear, and a fourth planetary transmission module. One end of the second torque shaft is connected to the fourth bevel gear, and the other end of the second torque shaft is connected to the third spur gear. The fourth spur gear meshes with the third spur gear. The central axis of the fourth spur gear is located on the side of the central axis of the third spur gear away from the first cutting drum. The fourth planetary transmission module is driven by the fourth spur gear, and the output end of the fourth planetary transmission module is driven by the second cutting drum to drive the second cutting drum to rotate.

7. The electrically driven contour mining machine according to claim 6, characterized in that, The planetary transmission mounting bracket is connected to the third planetary transmission module and the fourth planetary transmission module.

8. The electrically driven contour mining machine according to claim 1, characterized in that, It also includes an electronic control module, a lubrication module, and a cooling module, which are arranged sequentially on the side of the dual-output motor away from the first cutting drum along a direction perpendicular to the axial direction of the first cutting drum.

9. The electrically driven contour mining machine according to claim 1, characterized in that, The maximum traction force of the first traction module or the second traction module is greater than or equal to 400 kN; and / or, The power of the dual-output motor is greater than or equal to 500kW.

10. A thin coal seam mining system, characterized in that, Including the electric traction contour mining machine according to any one of claims 1-9.

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