A cutting unit for steeply inclined coal seams and a steeply inclined coal seam shearer having the cutting unit

Abstract

The utility model discloses a kind of cutting part for steeply inclined coal seam and steeply inclined coal seam coal cutter with the cutting part, including transmission part, motor, rocker, drum and hydraulic cylinder device;Motor connects transmission part, transmission part connects rocker, and the transmission case of transmission part is rotatably connected with the rocker case of rocker;Two drums are symmetrically connected in the left end of transmission case and the one end away from transmission case of rocker case connection installation;Small drum is drivenly connected in the directly below of rocker case, and it is transversely arranged along its length direction;Transmission case is installed in machine shell, and one end of the hydraulic cylinder device is connected on the upper surface of rocker case, and the other end is hingedly connected in the upper portion of machine shell.The utility model is through being provided with small drum, can clean the coal directly below rocker case, ensure that rocker can normally cut, to ensure the normal operation of coal mining, ensure the efficiency of coal mining.The utility model has the technical advantages of simple structure, high working efficiency.

Description

Technical Field

[0001] This utility model relates to a cutting section for steeply inclined coal seams and a coal mining machine for steeply inclined coal seams having the cutting section. Background Technology

[0002] The coal mining industry is my country's most fundamental energy industry, playing a vital role in promoting the rapid development of the national economy and the continuous improvement of people's living standards. With the continuous improvement of my country's industrial mechanization level, the coal mining machinery industry has been powerfully promoted. Most coal mines in my country now widely use coal cutting machines for mechanized coal mining operations. This has positive significance in reducing the labor intensity of coal miners, improving the working environment at the coal face, increasing production speed, ensuring safe production, and improving the quality of finished coal.

[0003] The equipment level of coal mining machinery is one of the important indicators of the technological level of coal mines. With the development of coal mining machinery, there is a need to continuously develop cutting-type coal mining machines for steeply inclined coal seams to meet the needs of different coal seam geological conditions. The selection of coal mining machinery depends on the occurrence conditions of the coal seam.

[0004] To address the aforementioned issues, Chinese patent literature discloses "A Mining Machine for Steeply Inclined Coal Seams" (Publication No. CN204186385U, Publication Date March 4, 2015). This technology discloses a mining machine for steeply inclined coal seams. It includes a traction unit, a motor, a transmission unit, rocker arms, and a height adjustment device. The transmission unit includes a transmission housing and a transmission connecting shaft inside the transmission housing, as well as a transmission device. The transmission unit connects to several rocker arms via the transmission device, and a rotating device corresponds one-to-one with each rocker arm. Each rocker arm is connected to several rollers. The traction unit connects to a traction device, driving the entire mining machine. However, this technology has the following problems in practical use: because rollers are symmetrically connected to both sides of each rocker arm housing, there is no coal-cutting function directly below the rocker arm housing between two rollers; after the rollers cut the coal, the remaining coal below the rocker arm will block the rocker arm, preventing it from cutting coal properly. Summary of the Invention

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a cutting section for steeply inclined coal seams that is simple in structure, can clear coal directly below the rocker arm housing, and ensures that the rocker arm can cut down normally, as well as a steeply inclined coal seam mining machine having the cutting section.

[0006] The technical objective of this utility model is achieved through the following technical solution:

[0007] A cutting unit for steeply inclined coal seams includes a transmission part, a motor, a rocker arm, rollers, and a hydraulic cylinder device. The motor is connected to the transmission part, the transmission part is connected to the rocker arm, and the rocker arm housing is rotatably connected to the transmission housing of the transmission part. Two rollers are symmetrically connected to both sides of the rocker arm housing, which is installed on the left end of the transmission housing and away from the transmission housing. A small roller is transversely arranged along the length direction and connected to the lower part of the rocker arm housing. The transmission housing is installed inside a machine housing. One end of the hydraulic cylinder device is connected to the upper surface of the rocker arm housing, and the other end is hinged to the upper part of the machine housing.

[0008] Preferably, the upper surface of the rocker arm housing away from the transmission housing is provided with a hydraulic cylinder device connection part, one end of the hydraulic cylinder device is hinged to the hydraulic cylinder device connection part, and the other end is a housing connection end, which is hinged to the upper part of the housing.

[0009] Preferably, the rocker arm housing has cylindrical rocker arm connecting parts on both sides of the transmission housing end near the transmission part, and the transmission housing has a vertically penetrating groove in the middle of the end facing the rocker arm housing, and a rocker arm connecting part mounting groove with clearance fit to the rocker arm connecting part is provided on the opposite side of the groove; the width of the groove is greater than the width of the rocker arm housing.

[0010] The rocker arm connecting part is embedded in the rocker arm connecting part mounting groove and is rotatably connected to the rocker arm connecting part mounting groove; the rocker arm housing has an arc shape on the side near the transmission housing.

[0011] Preferably, the transmission part further includes a second transmission connecting shaft, a third transmission connecting shaft, a fourth transmission connecting shaft, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, and a sixth gear inside the transmission housing; the second transmission connecting shaft, the third transmission connecting shaft, and the fourth transmission connecting shaft are arranged longitudinally from right to left within the transmission housing.

[0012] The first gear is fixedly connected to the motor output shaft; the second transmission connecting shaft is fixed in the transmission housing, and the second gear is rotatably connected to the second transmission connecting shaft through a bearing; the second gear and the second transmission connecting shaft are arranged between the first gear and the third gear, and the second gear meshes with the first gear and the third gear respectively, transmitting the torque of the first gear to the third gear;

[0013] The third transmission shaft is rotatably connected to the transmission housing via bearings, and the third gear and the fourth gear are fixedly arranged at both ends of the third transmission shaft; the fourth gear meshes with the fifth gear, and the third gear transmits torque to the fifth gear through the fourth gear;

[0014] The fourth transmission connecting shaft mounting groove is connected to the rocker arm connecting part mounting groove, and the fourth transmission connecting shaft mounting groove and the rocker arm connecting part mounting groove are coaxial; the rocker arm connecting part has a rocker arm connecting part opening on the side facing the fourth transmission connecting shaft mounting groove for the fourth transmission connecting shaft to pass through; one end of the fourth transmission connecting shaft is rotatably connected to the fourth transmission connecting shaft mounting groove through a bearing, and the other end passes through the rocker arm connecting part opening and is rotatably connected to the rocker arm connecting part away from the fourth transmission connecting shaft mounting groove through a bearing;

[0015] The fifth gear is fixedly connected to one end of the fourth transmission connecting shaft inside the transmission housing, and the sixth gear is fixedly connected to one end of the fourth transmission connecting shaft inside the rocker arm connecting part; the fourth gear transmits torque to the sixth gear through the fifth gear.

[0016] The transmission part is connected to the rocker arm, and the sixth gear meshes with the gear inside the rocker arm housing.

[0017] Preferably, the rocker arm further includes a fifth transmission connecting shaft, a sixth transmission connecting shaft, a roller connecting shaft, a seventh transmission connecting shaft, an eighth transmission connecting shaft, a seventh gear, an eighth gear, a ninth gear, a tenth gear, an eleventh gear, and a twelfth gear disposed within the rocker arm housing; the fifth transmission connecting shaft, the sixth transmission connecting shaft, and the roller connecting shaft are arranged longitudinally from right to left within the rocker arm housing at intervals.

[0018] The fifth and sixth transmission connecting shafts are fixedly fixed in the rocker arm housing at intervals along the length of the rocker arm housing; the rocker arm housing is provided with a roller connecting shaft through hole at the end away from the transmission housing for the two ends of the roller connecting shaft to pass through, and there is a clearance fit between the roller connecting shaft and the roller connecting shaft through hole.

[0019] The seventh gear is rotatably connected to the fifth transmission shaft via a bearing, the eighth gear is rotatably connected to the sixth transmission shaft via a bearing, and the ninth gear is fixed to the roller connection shaft; the seventh gear meshes with the sixth gear, the eighth gear meshes with the seventh gear, and the ninth gear meshes with the eighth gear.

[0020] The sixth gear transmits torque to the ninth gear via the seventh and eighth gears, thereby driving the roller connecting shaft to rotate, which in turn drives the roller mounted on the roller connecting shaft to rotate.

[0021] Along the height direction of the rocker arm housing, the seventh transmission connecting shaft is longitudinally fixedly installed in the rocker arm housing near the lower left side of the sixth gear; the tenth gear is rotatably connected to one end of the seventh transmission connecting shaft through a bearing; the tenth gear meshes with the sixth gear;

[0022] Along the height direction of the rocker arm housing, the eighth transmission connecting shaft is longitudinally rotatably connected to the rocker arm housing via bearings and is located on the lower left side near the seventh transmission connecting shaft; the eleventh gear is fixedly connected to one end of the eighth transmission connecting shaft and meshes with the tenth gear; a twelfth gear, which is a splined gear, is also fixedly connected to the eighth transmission connecting shaft.

[0023] A ninth transmission connecting shaft for connecting small rollers is provided laterally at the lower part of the rocker arm housing;

[0024] Corresponding to the eighth transmission connecting shaft, the ninth transmission connecting shaft is arranged laterally along the length of the rocker arm housing. The ninth transmission connecting shaft is rotatably connected to the lower part of the rocker arm housing through a bearing. A thirteenth gear that meshes with the twelfth gear is fixedly provided at the end of the ninth transmission connecting shaft near the transmission housing. The thirteenth gear is a splined gear that meshes with the twelfth gear.

[0025] A mounting base is detachably connected to the lower part of the rocker arm housing, away from the transmission housing, via bolts; the mounting base is provided with a bearing seat corresponding to the ninth transmission connecting shaft.

[0026] The small roller is arranged along the length of the rocker arm housing, with one end connected to the bearing seat of the mounting base and the other end fixedly connected to the end of the ninth transmission connecting shaft away from the transmission housing.

[0027] While the fifth gear transmits torque to the seventh gear via the sixth gear, the fifth gear also transmits torque to the tenth gear via the sixth gear. The tenth gear then transmits torque to the thirteenth gear via the eleventh and twelfth gears, thereby driving the ninth transmission shaft to rotate, which in turn drives the small roller mounted on the ninth transmission shaft to rotate.

[0028] Preferably, the small roller is cylindrical in shape, and it is provided with multiple sets of first cutting teeth at intervals along the length of the rocker arm housing, with each first cutting tooth being perpendicular to the axis.

[0029] Preferably, a gap is provided between the first cutting tooth and the rocker arm housing.

[0030] Preferably, the small roller is provided with at least one second cutting tooth that is inclined toward the L-shaped angle of the mounting base and has a clearance fit with the L-shaped angle.

[0031] Preferably, the small roller includes a second roller with the second cutting tooth and a first roller with the first cutting tooth; the second roller and the first roller are detachably connected.

[0032] This utility model also provides a steeply inclined coal seam mining machine, including a frequency conversion speed control box, a traction unit, and a cutting unit as described above.

[0033] Compared with the prior art, the beneficial effects of this utility model are:

[0034] 1. The rocker arm of this utility model is connected to a small roller, which is arranged along the length of the rocker arm housing and is approximately the same length as the bottom of the arm housing, directly below the rocker arm. This technical measure can clear coal directly below the rocker arm housing, ensuring the rocker arm can descend normally, thereby guaranteeing normal coal mining operations and efficiency. It has the advantages of simple structure and high working efficiency.

[0035] 2. The small roller of this utility model is cylindrical in shape, and has multiple sets of first cutting teeth spaced apart along the length of the rocker arm housing, with each first cutting tooth perpendicular to the axis. A gap is provided between the first cutting teeth and the rocker arm housing. This technical measure can prevent coal blocks from getting stuck between the first cutting teeth.

[0036] 3. The small drum of this utility model is provided with at least one second cutting tooth that is inclined towards the L-shaped angle of the mounting base and has a clearance fit with the L-shaped angle. By providing the second cutting tooth, the gap between the first cutting tooth and the mounting base can be prevented from being blocked by coal blocks, ensuring the normal operation of the small drum and thus ensuring the efficiency of coal mining.

[0037] 4. The small roller of this utility model includes a second roller with a second set of teeth and a first roller with a first set of teeth. The second roller and the first roller are detachably connected to the ninth transmission connecting shaft. This technical measure facilitates batch manufacturing and subsequent segmented maintenance; when replacement is required, only one roller needs to be replaced individually. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the cutting part structure of this utility model;

[0039] Figure 2 This is a schematic diagram of the gear arrangement at the rocker arm connection.

[0040] Figure 3 A schematic diagram of the rocker arm housing, the gear arrangement inside the rocker arm housing, and the small roller structure;

[0041] Figure 4 for Figure 3 A schematic diagram of the rocker arm housing and the gear arrangement inside the rocker arm housing;

[0042] Figure 5 for Figure 3 Schematic diagram of the structure of small and medium-sized rollers;

[0043] Figure 6 for Figure 1 Schematic diagram of the mounting slot structure of the transmission housing;

[0044] Figure 7 for Figure 6Diagram of the AA direction;

[0045] Figure 8 This is a schematic diagram of the rocker arm structure;

[0046] Figure 9 for Figure 1 Schematic diagram of the initial state of the rocker arm and hydraulic cylinder assembly;

[0047] Figure 10 for Figure 9 Usage status diagram;

[0048] Figure 11 This is a schematic diagram of a steeply inclined coal seam mining machine.

[0049] Reference numerals: 1—Transmission part; 11—Transmission housing; 12—Second transmission connecting shaft; 13—Third transmission connecting shaft; 14—Fourth transmission connecting shaft; 101—First gear; 102—Second gear; 103—Third gear; 104—Fourth gear; 105—Fifth gear; 106—Sixth gear;

[0050] 111—Motor mounting slot; 112—Third transmission connecting shaft mounting slot; 113—Fourth transmission connecting shaft mounting slot; 114—Rocker arm connecting part mounting slot;

[0051] 2—Motor;

[0052] 3—rocker arm; 31—rocker arm housing; 311—hydraulic cylinder device connection part; 312—drum connecting shaft through hole;

[0053] 32—rocker arm connection part; 321—rocker arm connection part opening;

[0054] 33—Fifth transmission connecting shaft; 34—Sixth transmission connecting shaft; 35—Roller connecting shaft; 36—Seventh transmission connecting shaft; 37—Eighth transmission connecting shaft; 38—Ninth transmission connecting shaft;

[0055] 301—Seventh gear; 302—Eighth gear; 303—Ninth gear; 304—Tenth gear; 305—Eleventh gear; 306—Twelfth gear; 307—Thirteenth gear;

[0056] 4—Drum;

[0057] 5—Small roller; 51—First roller; 511—First cutting tooth; 52—Second roller; 521—Second cutting tooth;

[0058] 6—Mounting base; 61—L-shaped included angle; 62—Bearing housing;

[0059] 7—Hydraulic cylinder assembly; 71—Machine housing connection end;

[0060] 8—Casing; 9—Variable frequency speed control box; 10—Traction unit. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0062] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0063] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0064] In the description of the embodiments of this utility model, it should be noted that "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0065] like Figure 1 — Figure 11As shown, a cutting section for steeply inclined coal seams includes a transmission part 1, a motor 2, a rocker arm 3, rollers 4, and a hydraulic cylinder device 7. The motor 2 is connected to the transmission part 1, the transmission part 1 is connected to the rocker arm 3, and the rocker arm housing 31 of the rocker arm 3 is rotatably connected to the transmission housing 11 of the transmission part 1. Two rollers 4 are symmetrically connected to both sides of the left end of the transmission housing 11, away from the transmission housing 11. Two rollers 4 are symmetrically connected to both sides of the left end of the rocker arm housing 31, away from the transmission housing 11. A small roller 5 is transversely arranged along its length and connected directly below the rocker arm housing 31. The transmission housing 11 is installed inside a housing 8, and one end of the hydraulic cylinder device 7 is connected to the upper surface of the rocker arm housing 31, while the other end is hinged to the upper part of the housing 8. This technical measure can clear coal directly below the rocker arm housing 31, ensuring the rocker arm 3 can descend normally, thus guaranteeing normal coal mining operations and efficiency. It boasts advantages such as simple structure and high working efficiency.

[0066] like Figure 1 , Figure 3 , Figure 9 , Figure 10 , Figure 11 As shown, the upper surface of the rocker arm housing 31 away from the transmission housing 11 is provided with a hydraulic cylinder device connection part 311. One end of the hydraulic cylinder device 7 is hinged to the hydraulic cylinder device connection part 311, and the other end is the housing connection end 71, which is hinged to the upper part of the housing 8.

[0067] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 As shown, the rocker arm housing 31 has cylindrical rocker arm connecting portions 32 on both sides of the transmission housing 11 near the transmission part 1. Since the transmission housing 11 is located on the right side of the rocker arm housing 31, cylindrical rocker arm connecting portions 32 are provided on both sides of the right end of the rocker arm housing 31. The transmission housing 11 has a through groove at the center of the end facing the rocker arm housing 31, and a rocker arm connecting portion mounting groove 11 with clearance fit to the rocker arm connecting portion 32 is provided on the opposite side of the groove. The width of the groove is greater than the width of the rocker arm housing 31; the rocker arm connecting portion 32 is embedded in the rocker arm connecting portion mounting groove 114 and rotatably connected to it; the rocker arm housing 31 has an arc-shaped shape on the side near the transmission housing 11. The rocker arm housing 31 is rotatably mounted in the rocker arm connecting portion mounting groove 114 of the transmission housing 11 via the rocker arm connecting portion 32. The hydraulic cylinder device 7 is in its initial state when horizontally positioned with the rocker arm housing 31. When the hydraulic rod of the hydraulic cylinder device 7 extends or retracts, the rocker arm housing 31 rotates downward with the rocker arm connection part 32 as the rotation point and the hydraulic cylinder device 7 rotates downward with the housing connection end 71 as the rotation point.

[0068] like Figure 1 , Figure 2 , Figure 3 As shown, the transmission part 1 also includes a second transmission connecting shaft 12, a third transmission connecting shaft 13, a fourth transmission connecting shaft 14, a first gear 101, a second gear 102, a third gear 103, a fourth gear 104, a fifth gear 105, and a sixth gear 106 inside the transmission housing 11; the second transmission connecting shaft 12, the third transmission connecting shaft 13, and the fourth transmission connecting shaft 14 are arranged longitudinally from right to left within the transmission housing 11. The transmission part 1 mainly functions as a speed reducer.

[0069] like Figure 1 , Figure 6 As shown, the transmission housing 11 has mounting slots inside for mounting the motor 2, the second transmission connecting shaft 12, the third transmission connecting shaft 13, the fourth transmission connecting shaft 14, the first gear 101, the second gear 102, the third gear 103, the fourth gear 104, the fifth gear 105, and the sixth gear 106; wherein, the motor mounting slot 111 is used to mount the motor 2, the third transmission connecting shaft mounting slot 112 is used to mount the third transmission connecting shaft 13, and the fourth transmission connecting shaft mounting slot 113 is used to mount the fourth transmission connecting shaft 14.

[0070] like Figure 1 As shown, the first gear 101 is fixedly connected to the output shaft of the motor 2; the second transmission connecting shaft 12 is fixed inside the transmission housing 11, and the second gear 102 is rotatably connected to the second transmission connecting shaft 12 through a bearing; the second gear 102 and the second transmission connecting shaft 12 are arranged between the first gear 101 and the third gear 103, and the second gear 102 meshes with the first gear 101 and the third gear 103 respectively, transmitting the torque of the first gear 101 to the third gear 103.

[0071] like Figure 1 As shown, the third transmission connecting shaft 13 is rotatably connected to the transmission housing 11 through bearings, and the third gear 103 and the fourth gear 104 are fixedly arranged at both ends of the third transmission connecting shaft 13; the fourth gear 104 meshes with the fifth gear 105, and the third gear 103 transmits torque to the fifth gear 105 through the fourth gear 104.

[0072] like Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8As shown, the fourth transmission connecting shaft mounting groove 113 for mounting the fourth transmission connecting shaft 14 communicates with the rocker arm connecting part mounting groove 114, and the fourth transmission connecting shaft mounting groove 113 and the rocker arm connecting part mounting groove 114 are coaxial; the rocker arm connecting part 32 has a rocker arm connecting part opening 321 on the side facing the fourth transmission connecting shaft mounting groove 113 for the fourth transmission connecting shaft 14 to pass through; one end of the fourth transmission connecting shaft 14 is rotatably connected to the fourth transmission connecting shaft mounting groove 113 by a bearing, and the other end passes through the rocker arm connecting part opening 321 and is rotatably connected to the rocker arm connecting part 32 away from the fourth transmission connecting shaft mounting groove 113 by a bearing. In actual use, the rocker arm connecting part 32 consists of two rocker arm connecting parts 32 coaxially arranged on both sides of the rocker arm housing 31, and the rocker arm connecting part 32 has a cylindrical structure. The two rocker arm connecting parts 32 are respectively a first rocker arm connecting part arranged on one side of the fourth transmission connecting shaft mounting groove 113 and a second rocker arm connecting part arranged away from the fourth transmission connecting shaft mounting groove 113. A rocker arm connection opening 321 is provided on one side of the first rocker arm connection portion. The rocker arm connection opening 321 is a circular hole with a diameter greater than or equal to the diameter of the fourth transmission connection shaft 14, so that there is a clearance fit between the fourth transmission connection shaft 14 and the inner wall of the rocker arm connection portion 32. One end of the fourth transmission connection shaft 14 is fixed in the fourth transmission connection shaft mounting groove 113 by a bearing, and the second rocker arm connection portion is connected to the other end of the fourth transmission connection shaft 14 by a bearing. A limiting baffle is provided on the side of the bearing in the second rocker arm connection portion away from the fourth transmission connection shaft mounting groove 113.

[0073] In actual use, since the fourth transmission connecting shaft 14 passes through the opening 321 of the rocker arm connecting part, the fourth transmission connecting shaft 14 is coaxial with the opening 321 and the rocker arm connecting part 32. At this time, the rocker arm housing 31 rotates around the axis of the fourth transmission connecting shaft 14. The hydraulic cylinder device 7 rotates downward around the housing connecting end 71.

[0074] like Figure 1 , Figure 2 As shown, the fifth gear 105 is fixedly connected to one end of the fourth transmission shaft 14 inside the transmission housing 11, and the sixth gear 106 is fixedly connected to one end of the fourth transmission shaft 14 inside the rocker arm connection part 32; the fourth gear 104 transmits torque to the sixth gear 106 via the fifth gear 105.

[0075] like Figure 1 , Figure 2 , Figure 3 As shown, the transmission part 1 is connected to the rocker arm 3, and the sixth gear 106 meshes with the gear inside the rocker arm housing 31.

[0076] like Figure 1 — Figure 8As shown, the rocker arm 3 also includes a fifth transmission connecting shaft 33, a sixth transmission connecting shaft 34, a roller connecting shaft 35, a seventh transmission connecting shaft 36, an eighth transmission connecting shaft 37, a seventh gear 301, an eighth gear 302, a ninth gear 303, a tenth gear 304, an eleventh gear 305, and a twelfth gear 306, all disposed within the rocker arm housing 31. The fifth transmission connecting shaft 33, the sixth transmission connecting shaft 34, and the roller connecting shaft 35 are arranged longitudinally from right to left within the rocker arm housing 31. Because the roller 4 has a large diameter and needs to be far away from the transmission housing 11, the transversely arranged seventh gear 301, eighth gear 302, and ninth gear 303 ensure the stable operation of the roller 4 and also provide a suitable distance between the roller 4 and the transmission housing 11.

[0077] like Figure 1 — Figure 8 As shown, the fifth transmission connecting shaft 33 and the sixth transmission connecting shaft 34 are fixedly spaced within the rocker arm housing 31 along its length. The rocker arm housing 31 has a roller connecting shaft through hole 312 at the end away from the transmission housing 11, through which both ends of the roller connecting shaft 35 pass. The roller connecting shaft 35 and the roller connecting shaft through hole 312 are clearance-fitted. In actual use, a bearing portion that mates with the roller connecting shaft 35 is also provided on the outer side of the rocker arm housing 31 at the roller connecting shaft through hole 312.

[0078] like Figure 1 — Figure 3 As shown, the seventh gear 301 is rotatably connected to the fifth transmission connecting shaft 33 via a bearing, the eighth gear 302 is rotatably connected to the sixth transmission connecting shaft 34 via a bearing, and the ninth gear 303 is fixed to the roller connecting shaft 35; the seventh gear 301 meshes with the sixth gear 106, the eighth gear 302 meshes with the seventh gear 301, and the ninth gear 303 meshes with the eighth gear 302.

[0079] The sixth gear 106 transmits torque to the ninth gear 303 via the seventh gear 301 and the eighth gear 302, thereby driving the roller connecting shaft 35 to rotate, which in turn drives the roller 4 mounted on the roller connecting shaft 35 to rotate.

[0080] like Figure 2 , Figure 3 , Figure 4 As shown, along the height direction of the rocker arm housing 31, the seventh transmission connecting shaft 36 and the eighth transmission connecting shaft 37 are longitudinally arranged inside the rocker arm housing 31.

[0081] Specifically, along the height direction of the rocker arm housing 31, the seventh transmission connecting shaft 36 is longitudinally fixed inside the rocker arm housing 31 near the lower left side of the sixth gear 106; the tenth gear 304 is rotatably connected to one end of the seventh transmission connecting shaft 36 through a bearing; the tenth gear 304 meshes with the sixth gear 106.

[0082] like Figure 2 , Figure 3 , Figure 4 As shown, along the height direction of the rocker arm housing 31, the eighth transmission connecting shaft 37 is longitudinally rotatably connected to the rocker arm housing 31 and close to the lower left side of the seventh transmission connecting shaft 36 via a bearing; the eleventh gear 305 is fixedly connected to one end of the eighth transmission connecting shaft 37 and meshes with the tenth gear 304; a twelfth gear 306, which is a splined gear, is also fixedly connected to the eighth transmission connecting shaft 37.

[0083] like Figure 2 , Figure 3 , Figure 4 As shown, a ninth transmission connecting shaft 38, connecting the small roller 5, is laterally arranged at the lower part of the rocker arm housing 31. Corresponding to the eighth transmission connecting shaft 37, the ninth transmission connecting shaft 38 is arranged laterally along the length direction of the rocker arm housing 31, and is rotatably connected to the lower part of the rocker arm housing 31 via bearings; a thirteenth gear 307, meshing with the twelfth gear 306, is fixedly provided at the end of the ninth transmission connecting shaft 38 near the transmission housing 11; the thirteenth gear 307 is a splined gear that meshes with the twelfth gear 306. In actual use, there are two twelfth gears 306 arranged opposite each other.

[0084] like Figure 3 , Figure 4 As shown, a mounting base 6 is detachably connected to the lower part of the rocker arm housing 31 away from the transmission housing 11 by bolts; the mounting base 6 is provided with a bearing seat 62 corresponding to the ninth transmission connecting shaft 38. In actual use, the bearing seat 62 is coaxial with the ninth transmission connecting shaft 38.

[0085] like Figure 3 — Figure 5 As shown, the small roller 5 is arranged along the length of the rocker arm housing 31, with one end connected to the bearing seat 62 of the mounting base 6, and the other end fixedly connected to the end of the ninth transmission connecting shaft 38 away from the transmission housing 11.

[0086] like Figure 1 — Figure 5 As shown, while the fifth gear 105 transmits torque to the seventh gear 301 via the sixth gear 106, the fifth gear 105 also transmits torque to the tenth gear 304 via the sixth gear 106. The tenth gear 304 then transmits torque to the thirteenth gear 307 via the eleventh gear 305 and the twelfth gear 306, thereby driving the ninth transmission connecting shaft 38 to rotate, which in turn drives the small roller 5 mounted on the ninth transmission connecting shaft 38 to rotate.

[0087] The gear structure is a conventional and basic structure of the coal mining machine, and its power needs to be transmitted sequentially through multiple gears. The motor 2 drives the drum 4 and the small drum 5 to rotate through the gear structure in the transmission part 1 and the rocker arm 3.

[0088] like Figure 3 , Figure 5 As shown, the small roller 5 is cylindrical in shape, and multiple sets of first cutting teeth 511 are spaced apart along the length of the rocker arm housing 31, with each first cutting tooth 511 perpendicular to the axis. Specifically, there are 9 sets of first cutting teeth 511, with each set consisting of 1 to 2 first cutting teeth 511. A gap is provided between the first cutting teeth 511 and the rocker arm housing 31. This technical measure can prevent coal blocks from getting stuck between the first cutting teeth 511.

[0089] like Figure 3 , Figure 4 As shown, the mounting base 6 is generally L-shaped. Its horizontal section is bolted to the rocker arm housing 31, and its vertical section has a bearing seat 62 corresponding to the ninth transmission connecting shaft 38. The horizontal and vertical sections form an L-shaped angle 61. In actual use, due to the presence of the L-shaped angle 61, the gap between the first cutting tooth 511 and the mounting base 6 can be blocked by coal blocks. Therefore, the small drum 5 is provided with at least one second cutting tooth 521 that is inclined towards the L-shaped angle 61 of the mounting base 6 and has a clearance fit with the L-shaped angle 61. By providing the second cutting tooth 521, the gap between the first cutting tooth 511 and the mounting base 6 can be prevented from being blocked by coal blocks, ensuring the normal operation of the small drum 5 and thus ensuring the efficiency of coal mining.

[0090] like Figure 9 , Figure 10 , Figure 11 As shown, based on the above embodiments, this utility model also provides a steeply inclined coal seam mining machine, including the cutting section provided by this utility model, as well as a frequency converter speed control box 9 and a traction section 10. In actual use, the steeply inclined coal seam mining machine includes a base bracket integrated on the overall casing 8, a traction section 10, a cutting section, a rocker arm 3, a hydraulic cylinder, a coal mining machine spiral drum 4, a frequency converter speed control box 9, etc. The cutting section, the frequency converter speed control box 9, and the traction section 10 are arranged sequentially from left to right. Because the cutting section with the small drum 5 can clean up the coal remaining below the rocker arm 3 after cutting, it ensures that the rocker arm 3 can smoothly cut down during coal mining, thus ensuring the efficiency of coal mining. The steeply inclined coal seam mining machine with the cutting section has the technical advantages of simple structure and high coal mining efficiency; at the same time, it adopts AC frequency converter speed control technology to achieve stepless speed regulation of traction speed, high electric traction efficiency, large traction force, and anti-reverse overspeed function.

[0091] The steeply inclined coal seam mining machine provided by this utility model is suitable for inclined longwall mining faces with a coal seam dip angle of <55°, a coal seam thickness of 0.6m, and a working face length of about 120m. It requires that the coal hardness f ≤3, the roof be moderately stable, the floor undulations not be too large, and the coal seam not contain hard inclusions.

[0092] like Figure 3 , Figure 5 As shown, the small roller 5 includes a second roller 52 with a second cutting tooth 521 and a first roller 51 with a first cutting tooth 511. The second roller 52 and the first roller 51 are detachably connected. In actual use, the diameter of the right end of the second roller 52 is larger than the diameter of the left end of the first roller 51. The right end of the second roller 52 is fitted onto the left end of the first roller 51, and the two are detachably connected by threads / bolts, etc. The left end of the second roller 52 is connected to the bearing seat 62 of the mounting base 6, and the right end of the first roller 51 is fixedly connected to the left end of the ninth transmission connecting shaft 38. This technical measure facilitates batch manufacturing and subsequent segmented maintenance. When replacement is required, only one roller 4 needs to be replaced individually.

[0093] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cutting section for steeply inclined coal seams, characterized in that: It includes a transmission part, a motor, a rocker arm, rollers, and a hydraulic cylinder device; the motor is connected to the transmission part, the transmission part is connected to the rocker arm, and the rocker arm housing is rotatably connected to the transmission housing of the transmission part; the rocker arm housing is connected to two rollers symmetrically connected on both sides of the left end of the transmission housing and the end away from the transmission housing; a small roller is transversely arranged along the length direction and connected to the lower part of the rocker arm housing; the transmission housing is installed inside the machine housing, and one end of the hydraulic cylinder device is connected to the upper surface of the rocker arm housing, and the other end is hinged to the upper part of the machine housing.

2. The cutting section for steeply inclined coal seams according to claim 1, characterized in that: The upper surface of the rocker arm housing away from the transmission housing is provided with a hydraulic cylinder device connection part. One end of the hydraulic cylinder device is hinged to the hydraulic cylinder device connection part, and the other end is the housing connection end, which is hinged to the upper part of the housing.

3. The cutting section for steeply inclined coal seams according to claim 1, characterized in that: The rocker arm housing has cylindrical rocker arm connecting parts on both sides of the transmission housing end near the transmission part. The transmission housing has a vertically penetrating groove in the middle of the end facing the rocker arm housing, and a rocker arm connecting part mounting groove with clearance fit is provided on the opposite side of the groove. The width of the groove is greater than the width of the rocker arm housing. The rocker arm connecting part is embedded in the rocker arm connecting part mounting groove and is rotatably connected to the rocker arm connecting part mounting groove; the rocker arm housing has an arc shape on the side near the transmission housing.

4. The cutting section for steeply inclined coal seams according to claim 3, characterized in that: The transmission part also includes a second transmission connecting shaft, a third transmission connecting shaft, a fourth transmission connecting shaft, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, and a sixth gear inside the transmission housing; the second transmission connecting shaft, the third transmission connecting shaft, and the fourth transmission connecting shaft are arranged longitudinally from right to left within the transmission housing. The first gear is fixedly connected to the motor output shaft; the second transmission connecting shaft is fixed in the transmission housing, and the second gear is rotatably connected to the second transmission connecting shaft through a bearing; the second gear and the second transmission connecting shaft are arranged between the first gear and the third gear, and the second gear meshes with the first gear and the third gear respectively, transmitting the torque of the first gear to the third gear; The third transmission shaft is rotatably connected to the transmission housing via bearings, and the third gear and the fourth gear are fixedly arranged at both ends of the third transmission shaft; the fourth gear meshes with the fifth gear, and the third gear transmits torque to the fifth gear through the fourth gear; The fourth transmission connecting shaft mounting groove is connected to the rocker arm connecting part mounting groove, and the fourth transmission connecting shaft mounting groove and the rocker arm connecting part mounting groove are coaxial; the rocker arm connecting part has a rocker arm connecting part opening on the side facing the fourth transmission connecting shaft mounting groove for the fourth transmission connecting shaft to pass through; one end of the fourth transmission connecting shaft is rotatably connected to the fourth transmission connecting shaft mounting groove through a bearing, and the other end passes through the rocker arm connecting part opening and is rotatably connected to the rocker arm connecting part away from the fourth transmission connecting shaft mounting groove through a bearing; The fifth gear is fixedly connected to one end of the fourth transmission connecting shaft inside the transmission housing, and the sixth gear is fixedly connected to one end of the fourth transmission connecting shaft inside the rocker arm connecting part; the fourth gear transmits torque to the sixth gear through the fifth gear. The transmission part is connected to the rocker arm, and the sixth gear meshes with the gear inside the rocker arm housing.

5. The cutting section for steeply inclined coal seams according to claim 4, characterized in that: The rocker arm also includes a fifth transmission connecting shaft, a sixth transmission connecting shaft, a roller connecting shaft, a seventh transmission connecting shaft, an eighth transmission connecting shaft, a seventh gear, an eighth gear, a ninth gear, a tenth gear, an eleventh gear, and a twelfth gear disposed within the rocker arm housing; the fifth transmission connecting shaft, the sixth transmission connecting shaft, and the roller connecting shaft are arranged longitudinally from right to left within the rocker arm housing. The fifth and sixth transmission connecting shafts are fixedly fixed in the rocker arm housing at intervals along the length of the rocker arm housing; the rocker arm housing is provided with a roller connecting shaft through hole at the end away from the transmission housing for the two ends of the roller connecting shaft to pass through, and there is a clearance fit between the roller connecting shaft and the roller connecting shaft through hole. The seventh gear is rotatably connected to the fifth transmission shaft via a bearing, the eighth gear is rotatably connected to the sixth transmission shaft via a bearing, and the ninth gear is fixed to the roller connection shaft; the seventh gear meshes with the sixth gear, the eighth gear meshes with the seventh gear, and the ninth gear meshes with the eighth gear. The sixth gear transmits torque to the ninth gear via the seventh and eighth gears, thereby driving the roller connecting shaft to rotate, which in turn drives the roller mounted on the roller connecting shaft to rotate. Along the height direction of the rocker arm housing, the seventh transmission connecting shaft is fixedly installed in the rocker arm housing near the lower left side of the sixth gear; the tenth gear is rotatably connected to one end of the seventh transmission connecting shaft through a bearing; the tenth gear meshes with the sixth gear; Along the height direction of the rocker arm housing, the eighth transmission connecting shaft is rotatably connected to the rocker arm housing via bearings and is located on the lower left side near the seventh transmission connecting shaft; the eleventh gear is fixedly connected to one end of the eighth transmission connecting shaft and meshes with the tenth gear; a twelfth gear, which is a splined gear, is also fixedly connected to the eighth transmission connecting shaft. A ninth transmission connecting shaft for connecting small rollers is provided laterally at the lower part of the rocker arm housing; Corresponding to the eighth transmission connecting shaft, the ninth transmission connecting shaft is arranged laterally along the length of the rocker arm housing. The ninth transmission connecting shaft is rotatably connected to the lower part of the rocker arm housing through a bearing. A thirteenth gear that meshes with the twelfth gear is fixedly provided at the end of the ninth transmission connecting shaft near the transmission housing. The thirteenth gear is a splined gear that meshes with the twelfth gear. A mounting base is detachably connected to the lower part of the rocker arm housing, away from the transmission housing, via bolts; the mounting base is provided with a bearing seat corresponding to the ninth transmission connecting shaft. The small roller is arranged along the length of the rocker arm housing, with one end connected to the bearing seat of the mounting base and the other end fixedly connected to the end of the ninth transmission connecting shaft away from the transmission housing. While the fifth gear transmits torque to the seventh gear via the sixth gear, the fifth gear also transmits torque to the tenth gear via the sixth gear. The tenth gear then transmits torque to the thirteenth gear via the eleventh and twelfth gears, thereby driving the ninth transmission shaft to rotate, which in turn drives the small roller mounted on the ninth transmission shaft to rotate.

6. The cutting section for steeply inclined coal seams according to claim 1 or 5, characterized in that: The small roller is cylindrical in shape, and it has multiple sets of first cutting teeth spaced apart along the length of the rocker arm housing, with each first cutting tooth perpendicular to the axis.

7. The cutting section for steeply inclined coal seams according to claim 6, characterized in that: The first cutting tooth is spaced apart from the rocker arm housing.

8. The cutting section for steeply inclined coal seams according to claim 6, characterized in that: The small roller is provided with at least one second cutting tooth that is inclined toward the L-shaped angle of the mounting base and has a clearance fit with the L-shaped angle.

9. The cutting section for steeply inclined coal seams according to claim 8, characterized in that: The small roller includes a second roller with the second cutting tooth and a first roller with the first cutting tooth; the second roller and the first roller are detachably connected.

10. A steeply inclined coal seam mining machine, characterized in that, It includes a variable frequency speed control box, a traction unit, and a cutting unit as described in any one of claims 1 to 9.

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