An automatic conveying device for coal mining

Abstract

The present invention relates to the technical field of coal mining, and in particular to an automated conveying device for coal mining, the technical solution of which includes: a fixed support frame, the interior of the fixed support frame is connected to a conveyor belt through a rack-linked gear transmission, the outer side of the transmission component is fixedly connected to a small particle collection component, and the top of the small particle collection component is installed with a coal classification collection component. The present invention uses a positioning card frame plate and a single-sided gear sliding cavity plate to slide up and down along the small particle collection frame to vibrate and level the accumulated small particle coal, avoiding excessive accumulation that affects the continued separation of the coal above the grading filter net, while the vibration generated by the sliding of the positioning card frame plate and the single-sided gear sliding cavity plate accelerates the separation of the small particle coal on the grading filter net, and some small particle coal is directly below the large particle coal, which cannot form dust to affect the processing environment, thereby reducing the generation of dust during transportation.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining and transportation, and in particular to an automatic transportation device for coal mining. Background Art

[0002] Coal mining and transportation is to transport coal from the mining face to the ground or other designated locations by driving the conveyor belt through a drive device. During the transportation process, the control system monitors the operating status parameters of the conveyor belt in real time through sensors, and automatically adjusts and controls the conveyor device according to the preset control strategy. When an abnormal situation occurs in the conveyor device, the protection device can detect it in time and send out an alarm signal, and take corresponding protection measures to ensure the safe operation of the conveyor device. Different types of coal have different physical properties and particle size distributions, and the automated conveyor device may not be able to adapt to some special types of coal.

[0003] In the patent document with the published announcement number CN219506945U, a coal mining and conveying device is disclosed, including a support frame, a conveyor belt is arranged on the inner frame wall of the support frame, three fixed plates are fixedly connected to the lower end of the support frame, the lower ends of the three fixed plates are fixedly connected to support assemblies, the lower ends of the three support assemblies are fixedly connected to two circular plates, the left and right parts of the outer surfaces of several of the circular plates are fixedly connected to positioning plates, the front and rear parts of the upper end of the support frame are fixedly connected to connecting assemblies, the supporting assemblies include support rods, two support rods are arranged, and the upper ends of the two support rods are interspersed with extension rods, so that the conveying height of the entire conveying device can be adjusted by setting the support assemblies and connecting assemblies.

[0004] When the above device is in use, all the coal is transported together. There are many small coal particles in the piled-up coal, which are easily scattered in the air due to the wind during transportation, which has a great impact on the processing environment. At the same time, for coal of different particle sizes, the same transportation method is adopted, which is not conducive to the later separation of coal slag and large-particle coal by the staff, affecting the overall mining efficiency.

[0005] Therefore, the present application proposes an automated conveying device for coal mining. Summary of the invention

[0006] The purpose of the present invention is to address the problem in the background technology that small coal particles are easily scattered in the air due to the push of wind during transportation, which has a great impact on the processing environment. At the same time, for coal of different particle sizes, the same transportation method is used, which is not conducive to the later separation of coal slag and large-particle coal by later staff, affecting the overall mining efficiency. An automated conveying device for coal mining is proposed.

[0007] The technical solution of the present invention is: an automatic conveying device for coal mining, comprising a transmission component, the transmission component comprising a fixed support frame, the interior of the fixed support frame is connected to a transmission belt through a rack-linked gear transmission, the outer side of the transmission component is fixedly connected to a small particle collection component, and a coal classification collection component is installed on the top of the small particle collection component;

[0008] The coal mine classification collection component comprises a coal mine collection frame, and a classification filter is fixedly installed on one side of the coal mine collection frame;

[0009] The small particle collection assembly includes a small particle collection frame fixedly installed at the bottom of the coal mine collection frame, and a plurality of positioning support plates are fixedly installed on the side of the small particle collection frame away from the coal mine collection frame. The positioning support plate is fixedly installed on one side of the conveyor belt, and one side of the positioning support plate is rotatably connected to a rotating rod, and the middle of the rotating rod is fixedly connected to an eccentric wheel, the top of the positioning support plate is slidably connected to a hollow slider frame, one side of the hollow slider frame is fixedly connected to a transverse support plate, and the bottom of the transverse support plate is rotatably connected to a corresponding rotating wheel, and the eccentric wheel and the corresponding rotating wheel are arranged in a meshing state, and two groups of positioning card frame plates are fixedly connected on both sides of the hollow slider frame, and a single-sided gear sliding cavity plate is slidably connected between the two groups of positioning card frame plates, and the two groups of positioning card frame plates and the single-sided gear sliding cavity plate are located directly below the grading filter screen.

[0010] Optionally, one side of the plurality of groups of positioning support plates is rotatably connected to a plurality of auxiliary turntables, the auxiliary turntables are fixedly connected to the rotating rod, and an auxiliary transmission belt is transmission-connected between the plurality of auxiliary turntables.

[0011] Optionally, a second bevel gear is fixedly connected to a side of the rotating rod away from the auxiliary rotating disk, an outer side of the second bevel gear is meshingly connected to a first bevel gear, and the first bevel gear is rotatably connected to one side of the positioning support plate.

[0012] Optionally, a sliding clamping rod is fixedly connected to the interior of the first bevel gear, and the sliding clamping rod is rotatably connected to one side of the positioning support plate.

[0013] Optionally, a plurality of slideways are provided on the outer side of the sliding card rod, and the sliding card rod passes through one side of the transverse support plate and is slidably connected to a hollow sliding cavity bevel gear through the slideway.

[0014] Optionally, the number of the second bevel gears is two, and another second bevel gear is rotatably connected to one side of the hollow slider frame. The second bevel gear passes through one side of the hollow slider frame and is fixedly connected to a positioning roller, and the positioning roller is rotatably connected to the inner wall of the hollow slider frame.

[0015] Optionally, a telescopic rod is fixedly connected between the transverse support plate and the positioning support plate, and an auxiliary spring is fixedly connected inside the telescopic rod.

[0016] Optionally, an external gear is fixedly connected to the outer side of the positioning roller, and the external gear is meshingly connected to the outer side of the single-sided gear sliding cavity plate. The top of the single-sided gear sliding cavity plate is fixedly connected to a positioning card rod frame, and two two-way hinge rods are hinged on both sides of the positioning card rod frame. Two corresponding push separation plates are hinged on one side of the two two-way hinge rods away from the positioning card rod frame, and the corresponding push separation plates are slidably installed at the bottom of the grading filter.

[0017] Optionally, one side of the small particle collection frame is hinged with a single-sided output side block, and a positioning spring is fixedly connected to the connection between the single-sided output side block and the small particle collection frame, and a concave positioning wheel is fixedly connected to the connection between the single-sided output side block and the small particle collection frame. The concave positioning wheel is rotatably installed on one side of the small particle collection frame, and a convex positioning wheel is fixedly connected to the outer side of the fixed support frame, and the convex positioning wheel is adapted to the concave positioning wheel.

[0018] Optionally, the small particle collection assembly further comprises two auxiliary positioning frames slidably connected to the inner wall of the coal mine collection frame, and two movable clamping assemblies are installed inside the coal mine classification collection assembly;

[0019] The movable clamping assembly includes a hollow rod fixedly installed on the inner wall of the coal mine collection frame by a bolt positioning block, two sliding hole rods are slidably connected to the outer walls on both sides of the hollow rod, the same number of L-shaped rack rods are fixedly connected inside the two sliding hole rods, and the rack rod is slidably connected to the inner wall of the hollow rod, the two rack rods are located inside the hollow rod and meshed with a gear clamping block, the center of the gear clamping block is fixedly connected to a middle positioning block, the middle positioning block is rotatably connected to the middle part of the inner wall of the hollow rod, and a spring is fixedly connected between the hollow rod and the middle positioning block.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The positioning card frame plate and the single-sided gear sliding cavity plate slide up and down along the small particle collection frame to vibrate and level the accumulated small particles of coal to prevent excessive accumulation from affecting the continued separation of coal above the grading filter. At the same time, the vibration generated by the sliding of the positioning card frame plate and the single-sided gear sliding cavity plate accelerates the separation of small particles of coal on the grading filter. Some small particles of coal are directly below the large particles of coal, and they cannot form dust to affect the processing environment, thereby reducing the generation of dust during transportation;

[0022] 2. The hollow sliding cavity bevel gear and the other second bevel gear are in a synchronous sliding state, and the hollow sliding cavity bevel gear and the second bevel gear are always meshed, so that the sliding state between the hollow slider frame and the positioning support plate is in a relatively stable state due to the meshing of the gear mechanism, so that the positioning card frame plate and the single-sided gear sliding cavity plate move upward along the small particle collection frame more stably, thereby improving the efficiency of shaking small coal particles;

[0023] 3. The bidirectional hinge rod on the positioning card rod frame deflects outward along the positioning card rod frame and drives the corresponding push separation plate to slide back and forth at the bottom of the grading filter, expanding the moving range and hanging down the coal accumulated in the grading filter mesh, thereby preventing the blockage of small particles of coal;

[0024] 4. As the coal is separated by the grading filter, the auxiliary positioning frame can rely on the spring force to quickly clamp the coal with changing volume. At the same time, the separation between the powder in the coal and the grading filter is accelerated under the extrusion of the coal collection frame pulled back by the spring force. If the coal is of a high humidity type, the pressure of the coal collection frame will cause the coal to pile up and fit together, relying on the humidity viscosity to reduce dust generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the automatic conveying device for coal mining of the present invention;

[0026] Figure 2 The present invention Figure 1 Enlarged view of the middle A area;

[0027] Figure 3 It is a structural schematic diagram of the movable clamping assembly of the present invention;

[0028] Figure 4 The present invention Figure 3 Enlarged view of the middle B area;

[0029] Figure 5 It is a structural schematic diagram of the transmission belt of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the positioning roller of the present invention;

[0031] Figure 7 The present invention Figure 6 Enlarged view of the middle C area;

[0032] Figure 8 It is a structural schematic diagram of the telescopic rod of the present invention;

[0033] Fig. 9 It is a structural schematic diagram of a single-side output side block of the present invention;

[0034] Fig.10 The present invention Fig. 9 Enlarged view of the middle D area;

[0035] Fig.11 It is a structural schematic diagram of a single-side gear sliding cavity plate of the present invention.

[0036] Figure numerals: 1, transmission component; 101, transmission belt; 102, fixed support frame; 103, rack linkage gear; 2, coal mine classification collection component; 201, auxiliary positioning frame; 202, coal mine collection frame; 203, classification filter; 3, small particle collection component; 301, small particle collection frame; 302, single-side output side block; 303, concave positioning wheel; 304, convex positioning wheel; 305, positioning support plate; 306, rotating rod; 307, telescopic rod; 308, hollow slider frame; 309, positioning roller; 310, first bevel gear; 311, auxiliary rotating Disk; 312, sliding card rod; 313, eccentric wheel; 314, horizontal support plate; 315, second bevel gear; 316, slideway; 317, hollow sliding cavity bevel gear; 318, single-sided gear sliding cavity plate; 319, positioning card frame plate; 320, external gear; 321, positioning card rod frame; 322, two-way hinge rod; 323, corresponding push separation plate; 324, corresponding rotating wheel; 4, movable clamping assembly; 401, sliding hole rod; 402, hollow rod; 403, bolt positioning block; 404, rack rod; 405, gear clamping block; 406, spring; 407, middle positioning block. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] like Figure 1-Figure 2 As shown, an automatic conveying device for coal mining proposed by the present invention comprises a transmission component 1, the transmission component 1 comprises a fixed support frame 102, the interior of the fixed support frame 102 is connected with a conveyor belt 101 through a rack-linked gear 103, both sides of the fixed support frame 102 are provided with fixed components to support the fixed support frame 102 to lift up, and the conveyor belt 101 is subjected to the existing transmission movement by means of the rack-linked gear 103 and the chain on the inner wall of the conveyor belt 101, the outer side of the transmission component 1 is fixedly connected with a small particle collection component 3, and the top of the small particle collection component 3 is installed with a coal mine classification collection component 2;

[0039] The coal mine grading collection component 2 includes a coal mine collection frame 202, and a grading filter net 203 is fixedly installed on one side of the coal mine collection frame 202. A plurality of coal mine grading collection components 2 and small particle collection components 3 are arranged on the conveyor belt 101 according to the actual transportation conditions, and the distance between each two small particle collection components 3 of the conveyor belt 101 is adjusted according to the actual output position. The coal mine grading collection component 2 is used to transport coal piles of roughly the same volume, so as to improve the stability of coal transportation and avoid the influence of excessive weight or light weight on the transportation movement of the conveyor belt 101.

[0040] like Figure 1As shown, one side of the multiple groups of positioning support plates 305 is rotatably connected to multiple auxiliary turntables 311, the auxiliary turntables 311 are fixedly connected to the rotating rod 306, and the multiple auxiliary turntables 311 are transmitted and connected by an auxiliary transmission belt, which is fixedly connected to the auxiliary turntable 311 by a motor, so that the motor drives one auxiliary turntable 311 to rotate, and this auxiliary turntable 311 drives other auxiliary turntables 311 to rotate together by the auxiliary transmission belt, and a second bevel gear 315 is fixedly connected to the side of the rotating rod 306 away from the auxiliary turntable 311, and the outer side of the second bevel gear 315 is meshedly connected to the first bevel gear 310, and the first bevel gear 310 is rotatably connected On one side of the positioning support plate 305, a sliding card rod 312 is fixedly connected to the inside of the first bevel gear 310, and the sliding card rod 312 is rotatably connected to one side of the positioning support plate 305. A plurality of slideways 316 are provided on the outer side of the sliding card rod 312. The sliding card rod 312 passes through one side of the transverse support plate 314 and is slidably connected to a hollow sliding cavity bevel gear 317 through the slideway 316. There are two second bevel gears 315, and another second bevel gear 315 is rotatably connected to one side of the hollow slider frame 308. The second bevel gear 315 passes through one side of the hollow slider frame 308 and is fixedly connected to a positioning roller 309. The positioning roller 309 is rotatably connected to The inner wall of the hollow slider frame 308, when the motor drives the auxiliary turntable 311 to rotate, the auxiliary turntable 311 passes through one end of the positioning support plate 305 to drive a second bevel gear 315 to rotate, and the second bevel gear 315 drives the first bevel gear 310 and the sliding clamp rod 312 to rotate by meshing with the first bevel gear 310. As the end of the eccentric wheel 313 farther from the center of the circle contacts the corresponding rotating wheel 324, the convex positioning wheel 304 drives the hollow slider frame 308 to slide upward along the positioning support plate 305. At this time, the hollow slider frame 308 drives the hollow sliding cavity bevel gear 317 to slide upward along the slideway 316 through the transverse support plate 314, and at the same time When the hollow sliding cavity bevel gear 317 rotates together with the sliding clamp rod 312 under the limit of the slideway 316, and the transverse support plate 314 moves together with the hollow slider frame 308, the hollow sliding cavity bevel gear 317 and the other second bevel gear 315 are in a synchronous sliding state, and the hollow sliding cavity bevel gear 317 and the second bevel gear 315 are always engaged, so that the sliding state between the hollow slider frame 308 and the positioning support plate 305 is in a relatively stable state due to the engagement of the gear mechanism, thereby causing the positioning clamp frame plate 319 and the single-sided gear sliding cavity plate 318 to move upward along the small particle collection frame 301 more stably, thereby improving the efficiency of shaking small coal particles.

[0041] The small particle collection assembly 3 includes a small particle collection frame 301 fixedly installed at the bottom of the coal mine collection frame 202, and a plurality of positioning support plates 305 are fixedly installed on one side of the small particle collection frame 301 away from the coal mine collection frame 202. The positioning support plate 305 is fixedly installed on one side of the conveyor belt 101, and one side of the positioning support plate 305 is rotatably connected to a rotating rod 306, and the middle part of the rotating rod 306 is fixedly connected to an eccentric wheel 313, and the top of the positioning support plate 305 is slidably connected to a hollow slider The hollow slider frame 308 has a horizontal support plate 314 fixedly connected to one side of the hollow slider frame 308, and a corresponding rotating wheel 324 is rotatably connected to the bottom of the horizontal support plate 314. The eccentric wheel 313 is arranged in a meshing state with the corresponding rotating wheel 324. Two sets of positioning card frame plates 319 are fixedly connected to both sides of the hollow slider frame 308, and a single-side gear sliding cavity plate 318 is slidably connected between the two sets of positioning card frame plates 319. The two sets of positioning card frame plates 319 and the single-side gear sliding cavity plate 318 are located at the positive side of the grading filter screen 203. At the bottom, when the coal is piled up on the conveyor belt 101 for transportation, due to the vibration of the equipment and the influence of gravity, the small particles on the grading filter screen 203 are separated from the large particles to prevent excessive coal from piling up and leaking from the transport plate. At the same time, the rotating rod 306 drives the eccentric wheel 313 to rotate. Depending on the different diameters of the eccentric wheel 313, the corresponding rotating wheel 324 contacts the eccentric wheel 313, driving the hollow slider frame 308 to slide up and down along the positioning support plate 305. In this process, the positioning card frame plate 31 9 and the single-sided gear sliding cavity plate 318 slide up and down along the small-particle collection frame 301 to vibrate the accumulated small-particle coal to prevent excessive accumulation from affecting the continued separation of the coal above the grading filter 203. At the same time, the vibration generated by the upward and downward sliding of the positioning frame plate 319 and the single-sided gear sliding cavity plate 318 accelerates the separation of the small-particle coal on the grading filter 203. Some small-particle coal is directly below the large-particle coal, and it cannot form dust to affect the processing environment, thereby reducing the generation of dust during transportation.

[0042] like Figure 1-Figure 8As shown, a telescopic rod 307 is fixedly connected between the transverse support plate 314 and the positioning support plate 305, and an auxiliary spring is fixedly connected inside the telescopic rod 307. The sliding distance between the hollow slider frame 308 and the positioning support plate 305 is limited by the telescopic rod 307 and the auxiliary spring. The outer side of the positioning roller 309 is fixedly connected to an external gear 320, and the external gear 320 is meshed and connected to the outer side of the single-sided gear sliding cavity plate 318. The top of the single-sided gear sliding cavity plate 318 is fixedly connected to the outer side of the single-sided gear sliding cavity plate 318. The fixed connection is a positioning card rod frame 321, and two two-way hinge rods 322 are hinged on both sides of the positioning card rod frame 321. Two corresponding push-type separation plates 323 are hinged on one side of the two two-way hinge rods 322 away from the positioning card rod frame 321. The corresponding push-type separation plates 323 are slidably installed at the bottom of the graded filter screen 203. Another second bevel gear 315 drives the positioning roller 309 to rotate along the hollow slider frame 308. The positioning roller 309 passes through the single-side gear sliding cavity plate 31 The meshing between the eccentric wheel 313 and the external gear 320 drives the single-sided gear sliding cavity plate 318 to slide along the positioning card frame plate 319. Since the motor is a forward and reverse motor, the eccentric wheel 313 rotates 180 degrees and reverses back, and the single-sided gear sliding cavity plate 318 slides back and forth between the two positioning card frame plates 319 to loosen the coal at the bottom of the small particle collection frame 301 to prevent the small particles from piling up and affecting the separation of the upper grading filter 203. As the sliding cavity plate 318 slides back and forth along the positioning card frame plate 319, it also moves upward along the small particle collection frame 301 following the positioning card frame plate 319. At this time, the bidirectional hinge rod 322 on the positioning card rod frame 321 deflects outward along the positioning card rod frame 321 and drives the corresponding pushing separation plate 323 to slide back and forth at the bottom of the grading filter 203, thereby expanding the moving range and hanging down the coal accumulated in the holes of the grading filter 203, thereby preventing blockage of small particles of coal.

[0043] like Figure 7-Figure 11As shown, one side of the small particle collection frame 301 is hinged with a single-side output side block 302, and the connection between the single-side output side block 302 and the small particle collection frame 301 is fixedly connected with a positioning spring, and the connection between the single-side output side block 302 and the small particle collection frame 301 is fixedly connected with a concave positioning wheel 303, and the concave positioning wheel 303 is rotatably installed on one side of the small particle collection frame 301, and the outer side of the fixed support frame 102 is fixedly connected with a convex positioning wheel 304, and the convex positioning wheel 304 is adapted to the concave positioning wheel 303. When the single-sided output side block 302 moves to the position of the convex positioning wheel 304, the gear teeth at the concave part of the concave positioning wheel 303 fit with the gear teeth at the convex part of the convex positioning wheel 304. The friction force generated between the two causes the concave positioning wheel 303 to rotate along the small particle collection frame 301, causing the single-sided output side block 302 to be opened, thereby facilitating the recovery of part of the small particle dust collected by the small particle collection component 3, thereby reducing the workload of subsequent processing steps.

[0044] In this embodiment, Figure 1-Figure 4 As shown, the small particle collection assembly 3 also includes two auxiliary positioning frames 201 slidably connected to the inner wall of the coal mine collection frame 202, and two movable clamping assemblies 4 are installed inside the coal mine classification collection assembly 2;

[0045] The movable clamping assembly 4 includes a hollow rod 402 fixedly mounted on the inner wall of the coal mine collection frame 202 by a bolt positioning block 403, two sliding hole rods 401 are slidably connected to the outer walls of both sides of the hollow rod 402, the interiors of the two sliding hole rods 401 are fixedly connected with the same number of L-shaped rack rods 404, and the rack rods 404 are slidably connected to the inner wall of the hollow rod 402, the two rack rods 404 are located inside the hollow rod 402 and meshedly connected with a gear clamping block 405, the center of the gear clamping block 405 is fixedly connected with a middle positioning block 407, and the middle positioning block 407 is fixedly connected to the middle positioning block 407. 07 is rotatably connected to the middle of the inner wall of the hollow rod 402, and a spring 406 is fixedly connected between the hollow rod 402 and the middle positioning block 407. The staff transports part of the coal to between the auxiliary positioning frame 201, the coal collection frame 202 and the grading filter 203. As the coal begins to lie flat on the grading filter 203, the auxiliary positioning frame 201 drives the sliding hole rod 401 to slide on the outer wall of the hollow rod 402 according to the initial volume occupied by the coal. It is explained here that the rack rod 404 is L-shaped, and the hollow inner wall of the hollow rod 402 is located between the rack rod 404 and the sliding hole The slot between the two rack rods 401, that is, the spacing between the rack rod 404 vertically installed at one end of the sliding hole rod 401, the sliding hole rod 401 slides on the outer wall of the hollow rod 402, and the horizontal gear teeth of the rack rod 404 not only slide along the inner wall of the hollow rod 402, but also the gear engaging block 405 rotates through the meshing of the two rack rods 404, and the gear engaging block 405 drives the spring 406 to rotate through the middle positioning block 407, and the rotation of the middle positioning block 407 is limited by the spring 406, and then the tension of the spring 406 is used to tighten the auxiliary positioning frame 201 It fits tightly around the coal mine to position it and prevent the coal mine from being output at a non-specified position during transportation. As the coal mine is separated by the grading filter net 203, the auxiliary positioning frame 201 can rely on the elastic force of the spring 406 to quickly clamp the coal mine with a changing volume. At the same time, the coal mine collecting frame 202 is pulled back by the elastic force of the spring 406 to accelerate the separation between the powder in the coal mine and the grading filter net 203. If the coal mine is of a type with high humidity, the pressure of the coal mine collecting frame 202 will cause the coal mine to pile up and fit together, relying on the humidity viscosity to reduce dust generation.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0047] "Comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0048] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An automated conveying device for coal mining, comprising a transmission component (1), the transmission component (1) comprising a fixed support frame (102), the interior of the fixed support frame (102) being connected to a transmission belt (101) via a rack-linked gear (103), characterized in that: A small particle collection component (3) is fixedly connected to the outside of the transmission component (1), and a coal mine classification collection component (2) is installed on the top of the small particle collection component (3); The coal mine classification collection component (2) comprises a coal mine collection frame (202), and a classification filter screen (203) is fixedly installed on one side of the coal mine collection frame (202); The small particle collection assembly (3) comprises a small particle collection frame (301) fixedly mounted on the bottom of the coal mine collection frame (202); a plurality of positioning support plates (305) are fixedly mounted on a side of the small particle collection frame (301) away from the coal mine collection frame (202); the positioning support plates (305) are fixedly mounted on a side of the conveyor belt (101); a rotating rod (306) is rotatably connected to one side of the positioning support plate (305); an eccentric wheel (313) is fixedly connected to the middle of the rotating rod (306); and a hollow slider frame (314) is slidably connected to the top of the positioning support plate (305). 308), a transverse support plate (314) is fixedly connected to one side of the hollow slider frame (308), a corresponding rotating wheel (324) is rotatably connected to the bottom of the transverse support plate (314), the eccentric wheel (313) and the corresponding rotating wheel (324) are arranged in a meshing state, two groups of positioning card frame plates (319) are fixedly connected to the two sides of the hollow slider frame (308), a single-sided gear sliding cavity plate (318) is slidably connected between the two groups of positioning card frame plates (319), and the two groups of positioning card frame plates (319) and the single-sided gear sliding cavity plate (318) are located directly below the grading filter screen (203); An external gear (320) is fixedly connected to the outer side of the positioning roller (309), and the external gear (320) is meshedly connected to the outer side of the single-sided gear sliding cavity plate (318). A positioning clamping rod frame (321) is fixedly connected to the top of the single-sided gear sliding cavity plate (318). Two bidirectional hinge rods (322) are hinged on both sides of the positioning clamping rod frame (321). Two corresponding push-and-release plates (323) are hinged on one side of the two bidirectional hinge rods (322) away from the positioning clamping rod frame (321). The corresponding push-and-release plates (323) are slidably mounted on the bottom of the grading filter screen (203); A single-side output side block (302) is hingedly connected to one side of the small particle collection frame (301), and a positioning spring is fixedly connected to the connection between the single-side output side block (302) and the small particle collection frame (301), and an inner concave positioning wheel (303) is fixedly connected to the connection between the single-side output side block (302) and the small particle collection frame (301), and the inner concave positioning wheel (303) is rotatably mounted on one side of the small particle collection frame (301), and an outer side of the fixed support frame (102) is fixedly connected to a convex positioning wheel (304), and the convex positioning wheel (304) is adapted to the concave positioning wheel (303); The small particle collection assembly (3) further comprises two auxiliary positioning frames (201) slidably connected to the inner wall of the coal mine collection frame (202), and two movable clamping assemblies (4) are installed inside the coal mine classification collection assembly (2); The movable clamping assembly (4) comprises a hollow rod (402) fixedly mounted on the inner wall of the coal mine collecting frame (202) via a bolt positioning block (403); two sliding hole rods (401) are slidably connected to the outer walls on both sides of the hollow rod (402); the same number of L-shaped rack rods (404) are fixedly connected inside the two sliding hole rods (401); the rack rods (404) are slidably connected to the inner wall of the hollow rod (402); the two rack rods (404) are located inside the hollow rod (402) and meshingly connected to a gear clamping block (405); a middle positioning block (407) is fixedly connected to the center of the gear clamping block (405); the middle positioning block (407) is rotatably connected to the middle part of the inner wall of the hollow rod (402); and a spring (406) is fixedly connected between the hollow rod (402) and the middle positioning block (407).

2. The automatic conveying device for coal mining according to claim 1, characterized in that: One side of the plurality of groups of positioning support plates (305) is rotatably connected to a plurality of auxiliary turntables (311), the auxiliary turntables (311) are fixedly connected to the rotating rod (306), and an auxiliary transmission belt is transmission-connected between the plurality of auxiliary turntables (311).

3. The automatic conveying device for coal mining according to claim 2, characterized in that: A second bevel gear (315) is fixedly connected to one side of the rotating rod (306) away from the auxiliary rotating disk (311); an outer side of the second bevel gear (315) is meshingly connected to a first bevel gear (310); and the first bevel gear (310) is rotatably connected to one side of the positioning support plate (305).

4. The automatic conveying device for coal mining according to claim 3 is characterized in that: A sliding clamping rod (312) is fixedly connected inside the first bevel gear (310), and the sliding clamping rod (312) is rotatably connected to one side of the positioning support plate (305).

5. The automatic conveying device for coal mining according to claim 4, characterized in that: A plurality of slideways (316) are provided on the outer side of the sliding clamping rod (312), and the sliding clamping rod (312) passes through one side of the transverse support plate (314) and is slidably connected to a hollow sliding cavity bevel gear (317) through the slideway (316).

6. The automatic conveying device for coal mining according to claim 5, characterized in that: The number of the second bevel gears (315) is two, and another of the second bevel gears (315) is rotatably connected to one side of the hollow slider frame (308). The second bevel gear (315) passes through one side of the hollow slider frame (308) and is fixedly connected to a positioning roller (309). The positioning roller (309) is rotatably connected to the inner wall of the hollow slider frame (308).

7. The automatic conveying device for coal mining according to claim 6, characterized in that: A telescopic rod (307) is fixedly connected between the transverse support plate (314) and the positioning support plate (305), and an auxiliary spring is fixedly connected inside the telescopic rod (307).

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