Material sorting mechanism of coal mining machine

Abstract

The invention discloses a material sorting mechanism of a coal mining machine, which belongs to the technical field of coal mining and comprises a base, moving wheels are arranged at corners of the lower end of the base, a sorting box is arranged at the upper end of the base, a feed hopper is arranged at the upper end of the sorting box, and a primary sieve plate is arranged at the upper end in the sorting box. According to the coal cinder sorting device, the coal cinder step-by-step screening mechanism is arranged, coal cinder can be conveniently screened step by step through the coal cinder step-by-step screening mechanism, and after the coal cinder is classified, a sorting box is driven to incline through a hydraulic rod, so that the coal cinder can smoothly fall off from an outlet in the position of a baffle, and the coal cinder collection work is achieved; by arranging the coal cinder stir-frying assembly, coal cinder at the upper end of the sieve plate can be conveniently stir-fried, the situation that the coal cinder is stacked on the sieve plate and cannot be effectively screened is avoided, in addition, the mechanism can drive three groups of stirring rods to rotate through a group of motors, and the overall use efficiency is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining, and in particular relates to a material sorting mechanism for a coal mining machine. Background Art

[0002] The material sorting mechanism is a device used to classify materials of different types or qualities. It is particularly important in the coal mining industry and is mainly used for screening coal mines in order to classify coal slag by size.

[0003] Although the existing coal mining machine material sorting mechanism can screen and classify coal slag, the coal mine is unable to fully stir the coal slag during screening, resulting in the inability to effectively screen the coal slag step by step; although the material sorting mechanism can be moved, after moving to the designated position, the stability of the device during the sorting process is relatively poor. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a material sorting mechanism for a coal mining machine, which is convenient for stirring the coal slag before screening and is convenient for ensuring the stability of the device during use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a material sorting mechanism for a coal mining machine, comprising a base, a moving wheel is arranged at the lower corner of the base, a sorting box is arranged at the upper end of the base, a feeding hopper is arranged at the upper end of the sorting box, a first-level sieve plate is arranged at the upper end of the interior of the sorting box, a second-level sieve plate is arranged at the inner center position of the sorting box, a third-level sieve plate is arranged at the inner lower end of the sorting box, a plurality of groups of baffles are arranged on the side of the sorting box, the plurality of groups of baffles are rotatably connected to the sorting box through a rotating shaft 1, a handle is arranged on the lower end of the side of the baffle, a support seat lifting mechanism is arranged on the side of the base, and a coal slag step-by-step screening mechanism is arranged on the lower end of the side of the sorting box.

[0006] Preferably, the coal slag step-by-step screening mechanism includes a coal slag stir-frying assembly, an L-shaped fixed plate, a hinge seat 1, a hydraulic rod, a rotating shaft 2, a U-shaped seat and a hinge seat 2, a U-shaped seat is arranged on the upper side of the base, the sorting box and the U-shaped seat are rotatably connected via the rotating shaft 2, a hinge seat 2 is arranged at the upper corner of the base, a hydraulic rod is arranged at the upper end of the hinge seat 2, a hinge seat 1 is arranged at the upper end of the hydraulic rod, an L-shaped fixed plate is arranged on the upper end of the hinge seat 1 and is fixedly connected to the sorting box via screws, and a coal slag stir-frying assembly is arranged inside the sorting box.

[0007] Preferably, both upper and lower ends of the hydraulic rod are rotatably connected to hinge seat 2 and hinge seat 1 via pins.

[0008] Preferably, the coal cinder stir-frying component includes a rotating shaft three, a gear four, a flexible toothed belt two, a gear three, a gear two, a flexible toothed belt one, a gear one, a stirring rod, a motor one, a rotating shaft one and a rotating shaft two. The upper end of the side of the sorting box is provided with a motor one, the output end of the motor one is provided with a rotating shaft one, the other end of the rotating shaft one is provided with a gear one, the outer surface of the gear one is meshingly connected with a flexible toothed belt one, the inner surface of the other end of the flexible toothed belt one is meshingly connected with a gear two, the interior of the gear two is fixedly penetrated by a rotating shaft two, one end of the rotating shaft two is provided with a gear three, the outer surface of the gear three is meshingly connected with a flexible toothed belt two, the inner surface of the other end of the flexible toothed belt two is meshingly connected with a gear four, the side of the gear four is provided with a rotating shaft three, and the surfaces of the rotating shaft three, the rotating shaft one and the rotating shaft two are provided with a stirring rod.

[0009] Preferably, the other ends of the rotating shaft three and the rotating shaft two are rotatably connected to the inner wall of the sorting box through bearings.

[0010] Preferably, the support seat lifting mechanism includes a support seat, a lifting plate, a threaded rod, bevel gear 2, bevel gear 1, a rotating rod and motor 2. Motor 2 is arranged on the side of the base, a rotating rod is arranged on the output end of motor 2, bevel gear 1 is arranged on the other end of the rotating rod, bevel gear 1 is meshingly connected with bevel gear 2 on the side of bevel gear 1, a threaded rod is fixedly arranged through the inside of bevel gear 2, a lifting plate is threadedly connected to the surface of the threaded rod, and a support seat is arranged on the side of the lower end of the lifting plate.

[0011] Preferably, the support seat lifting mechanism further includes a slider and a slide groove, the side of the lifting plate is provided with a slider, and the inner wall of the base is provided with a slide groove corresponding to the slider.

[0012] Preferably, the lower end of the support seat is provided with anti-slip grooves, and the interior of the lifting plate is provided with screw holes corresponding to the threaded rods, and both ends of the threaded rods are rotatably connected to the base through bearings.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention is provided with a step-by-step screening mechanism for coal slag, which can facilitate step-by-step screening of coal slag. After the coal slag is classified, the hydraulic rod drives the sorting box to tilt, so that the coal slag can smoothly fall from the outlet of the baffle position to realize the collection of the coal slag.

[0015] 2. The present invention is provided with a coal cinder stir-frying component, which can conveniently stir-fry the coal cinder on the upper end of the sieve plate to prevent the coal cinder from accumulating on the sieve plate and being unable to be effectively screened. In addition, the mechanism can drive three groups of stirring rods to rotate through a group of motors, and the overall use efficiency is higher.

[0016] 3. The present invention is provided with a support base lifting mechanism. The setting of this mechanism can enable the device to move to a specified position, and then drive the support base to descend to contact the ground through a motor, so that the contact area between the base and the ground is increased to ensure the stability of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 It is a three-dimensional cutaway view of the sorting box of the present invention;

[0019] Figure 3 It is a three-dimensional cutaway view of the step-by-step screening mechanism for coal slag of the present invention;

[0020] Figure 4 A three-dimensional diagram of the coal slag stir-frying assembly of the present invention;

[0021] Figure 5 It is a three-dimensional diagram of the support base lifting mechanism of the present invention;

[0022] In the figure: 1, base; 2, sorting box; 3, feed hopper; 4, coal slag step-by-step screening mechanism; 41, coal slag stir-frying component; 411, rotating shaft three; 412, gear four; 413, flexible toothed belt two; 414, gear three; 415, gear two; 416, flexible toothed belt one; 417, gear one; 418, stirring rod; 419, motor one; 4110, rotating shaft one; 4111, rotating shaft two; 42, L-shaped fixing plate; 43 , hinge seat one; 44, hydraulic rod; 45, rotating shaft two; 46, U-shaped seat; 47, hinge seat two; 5, rotating shaft one; 6, baffle; 7, handle; 8, support seat lifting mechanism; 81, support seat; 82, lifting plate; 83, slider; 84, slide groove; 85, threaded rod; 86, bevel gear two; 87, bevel gear one; 88, rotating rod; 89, motor two; 9, moving wheel; 10, primary sieve plate; 11, secondary sieve plate; 12, tertiary sieve plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1-5The present invention provides the following technical solutions: a material sorting mechanism for a coal mining machine, comprising a base 1, a moving wheel 9 is arranged at the lower corner of the base 1, a sorting box 2 is arranged at the upper end of the base 1, a feeding hopper 3 is arranged at the upper end of the sorting box 2, a primary sieve plate 10 is arranged at the upper end of the interior of the sorting box 2, a secondary sieve plate 11 is arranged at the inner center position of the sorting box 2, a tertiary sieve plate 12 is arranged at the lower end of the interior of the sorting box 2, a plurality of groups of baffles 6 are arranged on the side of the sorting box 2, and the plurality of groups of baffles 6 are rotatably connected to the sorting box 2 through a rotating shaft 5, a handle 7 is arranged at the lower end of the side of the baffle 6, a support seat lifting mechanism 8 is arranged on the side of the base 1, and a coal slag step-by-step screening mechanism 4 is arranged at the lower end of the side of the sorting box 2.

[0026] Specifically, the coal slag step-by-step screening mechanism 4 includes a coal slag stir-frying component 41, an L-shaped fixed plate 42, a hinge seat 1 43, a hydraulic rod 44, a rotating shaft 2 45, a U-shaped seat 46 and a hinge seat 2 47. A U-shaped seat 46 is arranged on the upper side of the base 1, and the sorting box 2 is rotatably connected to the U-shaped seat 46 through the rotating shaft 2 45. A hinge seat 2 47 is arranged at the upper corner of the base 1, and a hydraulic rod 44 is arranged on the upper end of the hinge seat 2 47. A hinge seat 1 43 is arranged on the upper end of the hydraulic rod 44. An L-shaped fixed plate 42 is arranged on the upper end of the hinge seat 1 43 and is fixedly connected to the sorting box 2 by screws. The coal slag stir-frying component 41 is arranged inside the sorting box 2.

[0027] By adopting the above technical solution, the coal slag is poured into the interior of the sorting box 2 through the feed hopper 3, and the coal slag can be screened by the primary sieve plate 10, the secondary sieve plate 11 and the tertiary sieve plate 12. After the screening is completed, by opening the hydraulic rod 44, the hydraulic rod 44 will extend and drive the sorting box 2 to rotate through the second rotating shaft 45 and the U-shaped seat 46, so that the coal slag can smoothly slide down from the opening at the baffle 6. At the same time, a loading box is placed at each group of baffles 6 to load the screened coal slag.

[0028] Specifically, the upper and lower ends of the hydraulic rod 44 are rotatably connected to the hinge seat 2 47 and the hinge seat 1 43 through a pin shaft.

[0029] By adopting the above technical solution, the arrangement of the structure can avoid the problem of the hydraulic rod 44 being stuck due to rotation.

[0030] Specifically, the cinder stir-frying assembly 41 includes a rotating shaft 3 411, a gear 412, a flexible toothed belt 2 413, a gear 3 414, a gear 2 415, a flexible toothed belt 1 416, a gear 1 417, a stirring rod 418, a motor 1 419, a rotating shaft 1 4110 and a rotating shaft 2 4111. A motor 1 419 is provided at the upper end of the side of the sorting box 2, a rotating shaft 1 4110 is provided at the output end of the motor 1 419, a gear 1 417 is provided at the other end of the rotating shaft 1 4110, and a flexible toothed belt 1 416 is provided on the outer surface of the gear 1 417 in meshing connection. The inner surface of the other end of the flexible toothed belt 1 416 is meshedly connected with a gear 2 415, a rotating shaft 2 4111 is fixedly arranged inside the gear 2 415, a gear 3 414 is arranged at one end of the rotating shaft 2 4111, a flexible toothed belt 2 413 is meshedly connected with the outer surface of the gear 3 414, a gear 4 412 is meshedly connected with the inner surface of the other end of the flexible toothed belt 2 413, a rotating shaft 3 411 is arranged on the side of the gear 4 412, and a stirring rod 418 is arranged on the surfaces of the rotating shaft 3 411, the rotating shaft 1 4110 and the rotating shaft 2 4111,

[0031] By adopting the above technical solution, the motor 419 is turned on, and the motor 419 drives the rotating shaft 1 4110 to rotate through the output end, and the rotating shaft 1 4110 drives the gear 1 417 to rotate, and the gear 1 417 drives the flexible toothed belt 1 416 to rotate, and the flexible toothed belt 1 416 drives the gear 2 415 to rotate, and the gear 2 415 drives the rotating shaft 2 4111 to rotate, and the rotating shaft 2 4111 drives the gear 3 414 to rotate, and the gear 3 414 drives the flexible toothed belt 2 413 to rotate, and the flexible toothed belt 2 413 drives the gear 4 412 to rotate, and the gear 412 drives the rotating shaft 3 411 to rotate, and the rotating shaft 1 4110, the rotating shaft 2 4111 and the rotating shaft 3 411 drive the stirring rod 418 to rotate, so as to stir the coal slag on the upper end of the sieve plate to avoid the problem that the coal slag is blocked in the sieve plate and cannot be screened smoothly.

[0032] Specifically, the other ends of the rotating shaft 3 411 and the rotating shaft 2 4111 are both rotatably connected to the inner wall of the sorting box 2 through bearings.

[0033] By adopting the above technical solution, the setting of this structure can avoid the problem of the second rotating shaft 4111 and the third rotating shaft 411 being stuck in rotation.

[0034] When the present embodiment is in use, the coal slag is poured into the interior of the sorting box 2 through the feed hopper 3, and the coal slag can be screened through the primary sieve plate 10, the secondary sieve plate 11 and the tertiary sieve plate 12. After the screening is completed, the hydraulic rod 44 is opened, and the hydraulic rod 44 is extended to drive the sorting box 2 to rotate through the rotating shaft 2 45 and the U-shaped seat 46, so that the coal slag can smoothly slide from the opening at the baffle 6. At the same time, a loading box is placed at each group of baffles 6 to load the screened coal slag, and the motor 419 is turned on. The motor 419 drives the rotating shaft 4110 to rotate through the output end, and the rotating shaft 4110 rotates to drive the gear 417 to rotate, and the gear 417 rotates The rotation of the flexible toothed belt 416 drives the gear 2 415 to rotate, the rotation of the gear 2 415 drives the rotating shaft 2 4111 to rotate, the rotation of the rotating shaft 2 4111 drives the gear 3 414 to rotate, the rotation of the gear 3 414 drives the flexible toothed belt 2 413 to rotate, the rotation of the flexible toothed belt 2 413 drives the gear 4 412 to rotate, the rotation of the gear 412 drives the rotating shaft 3 411 to rotate, the rotation of the rotating shaft 1 4110, the rotating shaft 2 4111 and the rotating shaft 3 411 drives the stirring rod 418 to rotate, thereby stirring the coal slag on the upper end of the sieve plate to avoid the problem of coal slag being blocked in the sieve plate and causing the screening to fail smoothly.

[0035] Example 2

[0036] The difference between this embodiment and the embodiment 1 is that: the support seat lifting mechanism 8 includes a support seat 81, a lifting plate 82, a threaded rod 85, a bevel gear 86, a bevel gear 87, a rotating rod 88 and a motor 89, a motor 89 is arranged on the side of the base 1, a rotating rod 88 is arranged on the output end of the motor 89, a bevel gear 87 is arranged on the other end of the rotating rod 88, a bevel gear 87 is arranged on the side of the bevel gear 87 in meshing connection with the bevel gear 86, a threaded rod 85 is fixedly arranged inside the bevel gear 86, a lifting plate 82 is threadedly arranged on the surface of the threaded rod 85, and a support seat 81 is arranged on the side of the lower end of the lifting plate 82.

[0037] By adopting the above technical solution, after the device is moved to the specified position, the motor 2 89 is turned on, and the motor 2 89 drives the rotating rod 88 to rotate through the output end. The rotating rod 88 rotates to drive the bevel gear 1 87 to rotate, and the bevel gear 1 87 rotates to drive the bevel gear 2 86 to rotate. The bevel gear 2 86 rotates to drive the threaded rod 85 to rotate. The threaded rod 85 rotates to drive the lifting plate 82 to descend, and the lifting plate 82 descends to drive the support seat 81 to descend to contact the ground, thereby increasing the contact area between the base 1 and the ground, thereby ensuring the stability of the device when in use.

[0038] Specifically, the support seat lifting mechanism 8 further includes a slider 83 and a slide groove 84. The side of the lifting plate 82 is provided with a slider 83, and the inner wall of the base 1 is provided with a slide groove 84 corresponding to the slider 83.

[0039] By adopting the above technical solution, when the lifting plate 82 is lifted or lowered, the slider 83 is driven to slide inside the slide groove 84, thereby improving the stability of the lifting plate 82 during the lifting process.

[0040] Specifically, the lower end of the support seat 81 is provided with anti-slip grooves, and the interior of the lifting plate 82 is provided with screw holes corresponding to the threaded rod 85, and both ends of the threaded rod 85 are rotatably connected to the base 1 through bearings.

[0041] By adopting the above technical solution, the arrangement of the structure can avoid the problem of the threaded rod 85 being stuck due to rotation.

[0042] When the present embodiment is in use, after the device is moved to the specified position, the motor 2 89 is turned on, and the motor 2 89 drives the rotating rod 88 to rotate through the output end, and the rotating rod 88 rotates to drive the bevel gear 1 87 to rotate, and the bevel gear 1 87 rotates to drive the bevel gear 2 86 to rotate, and the bevel gear 2 86 rotates to drive the threaded rod 85 to rotate, and the threaded rod 85 rotates to drive the lifting plate 82 to descend, and the lifting plate 82 descends and drives the support seat 81 to descend to contact the ground, thereby increasing the contact area between the base 1 and the ground, thereby ensuring the stability of the device when in use, and when the lifting plate 82 is lifted or lowered, it will drive the slider 83 to slide inside the slide groove 84, thereby improving the stability of the lifting plate 82 during the lifting process.

[0043] Working principle and use process of the present invention: When the present invention is used, the coal slag is poured into the interior of the sorting box 2 through the feed hopper 3, and the coal slag can be screened through the primary sieve plate 10, the secondary sieve plate 11 and the tertiary sieve plate 12. After the screening is completed, the hydraulic rod 44 is opened, and the hydraulic rod 44 is extended to drive the sorting box 2 to rotate through the rotating shaft 45 and the U-shaped seat 46, so that the coal slag can smoothly slide from the opening of the baffle 6. At the same time, a charging box is placed at each group of baffles 6 to sort the screened coal slag. The slag is loaded, and the motor 419 is turned on. The motor 419 drives the rotating shaft 4110 to rotate through the output end. The rotating shaft 4110 rotates and drives the gear 417 to rotate. The gear 417 rotates and drives the flexible toothed belt 416 to rotate. The flexible toothed belt 416 rotates and drives the gear 2 415 to rotate. The gear 2 415 rotates and drives the rotating shaft 2 4111 to rotate. The rotating shaft 2 4111 rotates and drives the gear 3 414 to rotate. The gear 3 414 rotates and drives the flexible toothed belt 2 413 rotates, the flexible toothed belt 2 413 rotates to drive the gear 412 to rotate, the gear 412 rotates to drive the rotating shaft 3 411 to rotate, the rotating shaft 1 4110, the rotating shaft 2 4111 and the rotating shaft 3 411 rotate to drive the stirring rod 418 to rotate, thereby stirring the coal slag on the upper end of the sieve plate to avoid the problem that the coal slag is blocked in the sieve plate and cannot be screened smoothly; after moving the device to the specified position, turn on the motor 2 89, the motor 2 89 drives the rotating rod 88 to rotate through the output end, the rotating rod 88 rotates to drive the bevel gear 1 87 to rotate, the bevel gear 1 87 rotates to drive the bevel gear 2 86 to rotate, the bevel gear 2 86 rotates to drive the threaded rod 85 to rotate, the threaded rod 85 rotates to drive the lifting plate 82 to descend, the lifting plate 82 descends and drives the support seat 81 to descend to contact with the ground, thereby increasing the contact area between the base 1 and the ground, thereby ensuring the stability of the device when in use, and the lifting plate 82 will drive the slider 83 to slide inside the slide groove 84 when it is lifted and lowered, thereby improving the stability of the lifting plate 82 during the lifting process.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material sorting mechanism for a coal mining machine, comprising a base (1), a moving wheel (9) is arranged at a lower corner of the base (1), a sorting box (2) is arranged at the upper end of the base (1), a feed hopper (3) is arranged at the upper end of the sorting box (2), a primary sieve plate (10) is arranged at the upper end of the interior of the sorting box (2), a secondary sieve plate (11) is arranged at the inner center position of the sorting box (2), a tertiary sieve plate (12) is arranged at the lower end of the interior of the sorting box (2), a plurality of baffles (6) are arranged on the side of the sorting box (2), the plurality of baffles (6) are rotatably connected to the sorting box (2) through a rotating shaft (5), and a handle (7) is arranged at the lower end of the side of the baffle (6), characterized in that: A support seat lifting mechanism (8) is arranged on the side of the base (1), and a coal slag step-by-step screening mechanism (4) is arranged on the lower end of the side of the sorting box (2).

2. A material sorting mechanism for a coal mining machine according to claim 1, characterized in that: The coal slag step-by-step screening mechanism (4) comprises a coal slag stir-frying assembly (41), an L-shaped fixed plate (42), a hinge seat 1 (43), a hydraulic rod (44), a rotating shaft 2 (45), a U-shaped seat (46) and a hinge seat 2 (47); a U-shaped seat (46) is arranged on the upper side of the base (1); the sorting box (2) and the U-shaped seat (46) are rotatably connected via the rotating shaft 2 (45); a hinge seat 2 (47) is arranged at the upper corner of the base (1); a hydraulic rod (44) is arranged at the upper end of the hinge seat 2 (47); a hinge seat 1 (43) is arranged at the upper end of the hydraulic rod (44); an L-shaped fixed plate (42) is arranged at the upper end of the hinge seat 1 (43) and is fixedly connected to the sorting box (2) via screws; and a coal slag stir-frying assembly (41) is arranged inside the sorting box (2).

3. A material sorting mechanism for a coal mining machine according to claim 2, characterized in that: The upper and lower ends of the hydraulic rod (44) are rotatably connected to the hinge seat 2 (47) and the hinge seat 1 (43) through a pin shaft.

4. A material sorting mechanism for a coal mining machine according to claim 2, characterized in that: The coal cinder stir-frying component (41) comprises a rotating shaft three (411), a gear four (412), a flexible toothed belt two (413), a gear three (414), a gear two (415), a flexible toothed belt one (416), a gear one (417), a stirring rod (418), a motor one (419), a rotating shaft one (4110) and a rotating shaft two (4111), wherein the upper end of the side of the sorting box (2) is provided with a motor one (419), the output end of the motor one (419) is provided with a rotating shaft one (4110), the other end of the rotating shaft one (4110) is provided with a gear one (417), and the outer surface of the gear one (417) is meshingly connected with a flexible toothed belt one (416). 16), the other end inner surface of the flexible toothed belt one (416) is meshingly connected with a gear two (415), a rotating shaft two (4111) is fixedly provided inside the gear two (415), one end of the rotating shaft two (4111) is provided with a gear three (414), the outer surface of the gear three (414) is meshingly connected with a flexible toothed belt two (413), the other end inner surface of the flexible toothed belt two (413) is meshingly connected with a gear four (412), a rotating shaft three (411) is provided on the side of the gear four (412), and a stirring rod (418) is provided on the surfaces of the rotating shaft three (411), the rotating shaft one (4110) and the rotating shaft two (4111).

5. A material sorting mechanism for a coal mining machine according to claim 4, characterized in that: The other ends of the rotating shaft three (411) and the rotating shaft two (4111) are both rotatably connected to the inner wall of the sorting box (2) via bearings.

6. A material sorting mechanism for a coal mining machine according to claim 1, characterized in that: The support seat lifting mechanism (8) comprises a support seat (81), a lifting plate (82), a threaded rod (85), a second bevel gear (86), a first bevel gear (87), a rotating rod (88) and a second motor (89); the second motor (89) is arranged on the side of the base (1); the output end of the second motor (89) is arranged with a rotating rod (88); the other end of the rotating rod (88) is arranged with a first bevel gear (87); the side of the first bevel gear (87) is meshingly connected with the second bevel gear (86); the threaded rod (85) is fixedly arranged inside the second bevel gear (86); the surface of the threaded rod (85) is threadedly connected with the lifting plate (82); and the support seat (81) is arranged on the side of the lower end of the lifting plate (82).

7. A material sorting mechanism for a coal mining machine according to claim 6, characterized in that: The support seat lifting mechanism (8) further comprises a slider (83) and a slide groove (84); the side of the lifting plate (82) is provided with a slider (83); and the inner wall of the base (1) is provided with a slide groove (84) corresponding to the slider (83).

8. A material sorting mechanism for a coal mining machine according to claim 6, characterized in that: The lower end of the support seat (81) is provided with anti-slip grooves, and the interior of the lifting plate (82) is provided with screw holes corresponding to the threaded rod (85), and both ends of the threaded rod (85) are rotatably connected to the base (1) through bearings.

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