CN114939458A - Coal mining pretreatment equipment for increasing scattering area of materials during crushing - Google Patents

Abstract

The invention discloses a pretreatment device for coal mining for increasing the scattering area of materials during crushing, which comprises a shell, the bottom of the shell is fixedly connected with supporting legs near four corners, a first discharge hole is arranged at the middle position of the bottom of the shell, the middle position of the top of the shell is inserted with a feeding frame, the invention further rolls and crushes the crushed coal blocks under the transmission of the transmission motor through the mutual matching of the second rotating rod, the second worm wheel, the second worm, the fixed rod and the rolling roller, and evenly spread out the coal cinder from the baffle to spill in the small opening, and stir to spread out to both sides at the in-process of shaking the screening frame about through mutually supporting of rack, spacing ring, drive gear, first threaded rod, first threaded block and support arm to the coal cinder granule in the screening frame, thereby further improve screening efficiency.

Description

A kind of pretreatment equipment for coal mine development that increases the material scattering area during pulverization

technical field

The invention relates to the technical field of coal mining machinery and equipment, in particular to a pretreatment device for coal mining that increases the area where materials are scattered during pulverization.

Background technique

Due to the abundant coal resources in my country, there are many coal mining areas in my country. The coal mining areas are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to dig underground tunnels to mine coal. , When the distance between the coal seam and the surface is relatively close, the surface soil layer is generally peeled off to excavate the coal, and the raw coal mined from the coal mine needs to be pretreated by various processes such as screening and impurity removal before it can be used in coking or chemical companies.

Existing coal mines use pretreatment equipment. When screening coal ore materials, coal ore particles are easily accumulated in the middle of the screening frame, resulting in low screening efficiency. It is not easy to clean out the impurities, which not only affects the overall screening efficiency of materials, but also increases the labor intensity of staff cleaning.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is to overcome the defects of the prior art, and to provide a pretreatment device for coal mine development that increases the material scattering area during pulverization.

In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a pre-processing device used in the development of a coal mine that increases the material scattering area during pulverization, including a shell, and the bottom of the shell is fixedly connected with support legs near the four corners, so the A first discharge port is opened at the middle position of the bottom of the casing, a feeding frame is inserted at the middle position of the top of the casing, and a cover plate is attached to the top of the feeding frame, and the cover The right side of the plate is hinged with the feeding frame, the inner cavity of the housing is provided with a crushing mechanism near the top, the inner cavity of the housing is fixedly connected with a partition near the top, and the top of the partition is provided with Spreading mechanism, a plurality of leak holes are opened on the partition plate, first material guide plates are arranged on the left and right sides of the bottom of the partition plate, and the two first material guide plates are separated from each other on the side away from each other. It is fixedly connected with the left and right sides of the inner cavity of the casing, the inner cavity of the casing is provided with a screening frame near the bottom, and the bottom of the inner cavity of the screening frame is fixedly connected with a filter screen, and the inner cavity of the screening frame is provided with a dial The left side of the inner cavity of the casing is fixedly connected with a sleeve near the bottom, and the left side of the inner cavity of the sleeve is fixedly connected with a spring, the right end of the spring is fixedly connected with a T-shaped rod, and the T-shaped rod is fixedly connected to the right end of the spring. One end of the shaped rod away from the spring is hinged with the left side of the screening frame, the right side of the screening frame is provided with a cam, and the top of the cam is fixedly connected with a first rotating rod near the left side, and the inner cavity of the housing is A horizontal plate is fixedly connected to the right side near the bottom, and a first bearing is fixedly connected to the bottom of the horizontal plate near the left side. The top end of the first rotating rod is inserted into the inner cavity of the first bearing. The outer side of the rod is sleeved with a first worm gear, and the rear side of the first worm gear is engaged with a first worm, the right side of the housing is fixedly connected with a second bearing near the bottom, and the right side of the housing is close to A support plate is fixedly connected at the bottom, and a transmission motor is fixedly connected to the top of the support plate. The right end of the first worm penetrates the inner cavity of the second bearing and is fixedly connected with the power output end of the transmission motor. The bottom of the right side of the screen is provided with a second discharge port, and the left side of the second discharge port is fitted with an L-shaped plate, the top of the L-shaped plate is provided with a lifting mechanism, and the top of the screening frame is A deflection mechanism is provided, and second material guide plates are fixedly connected to the left and right sides of the bottom of the inner cavity of the casing.

Preferably, the spreading mechanism includes a second rotating rod, and the second rotating rod is movably connected at the top middle position of the partition plate, the top end of the second rotating rod is fixedly connected with a second worm gear, and the A second worm is engaged with the rear side of the second worm gear, a third bearing is fixedly connected to the right side of the housing near the top, and the right end of the second worm penetrates the inner cavity of the third bearing and is fixedly connected with a double groove The outer side of the first worm is sleeved with a first single sheave near the right end, a first belt is arranged between the double sheave and the first single sheave, and the double sheave is connected to the first single sheave. The sheaves are connected by a first belt drive, a plurality of fixing rods are fixedly connected to the outer side wall of the second rotating rod, and rolling rollers are movably connected to one end of the plurality of the fixing rods away from the second rotating rod.

Preferably, the crushing mechanism includes two crushing rollers, and the two crushing rollers are located in the inner cavity of the casing near the top, the two crushing rollers are arranged left and right, and the inner parts of the two crushing rollers are The cavity is provided with a rotating shaft, and two fourth bearings are fixedly connected to the front and rear sides of the inner cavity of the casing near the top, and the two fourth bearings are arranged on the left and right, and the front and rear of the two rotating shafts are two. The ends are respectively inserted into the adjacent fourth bearing inner cavity, the outer sides of the two rotating shafts are sleeved with rotating gears near the rear end, and the two rotating gears are mutually meshed. A third worm gear is sleeved on the outer side of the rotating shaft near the front end, and the top of the third worm gear is engaged with a third worm, and a fifth bearing is fixedly connected to the right side of the housing near the top, and the third worm is The right end of the bearing penetrates through the inner cavity of the fifth bearing, and is fixedly connected with a second single sheave, a second belt is arranged between the second single sheave and the double sheave, and the second single sheave and the double sheave They are connected by a second belt drive.

Preferably, the feeding mechanism includes a connecting plate, and the connecting plate is located in the middle of the top of the inner cavity of the screening frame, and the front and rear sides of the screening frame are respectively fixedly connected to the front and rear sides of the inner cavity of the screening frame, so A sixth bearing is fixedly connected at the middle position of the connecting plate, a first threaded block is arranged at the middle position of the bottom of the connecting plate, and a first threaded hole is opened on the first threaded block, and the first threaded The inner cavity of the hole is provided with a first threaded rod, the top end of the first threaded rod passes through the inner cavity of the sixth bearing, and is fixedly connected with a driving gear, the rear side of the driving gear is meshed with a rack, and the screen frame is A limit ring is fixedly connected to the left side of the top, and the left end of the rack penetrates the inner cavity of the limit ring, and is movably connected with the left side of the inner cavity of the shell, and the left and right sides of the first threaded block are hinged with Two support arms, and the two support arms are jointly hinged with rollers on one side away from the first threaded block, and the outer side walls of the two rollers are fixedly connected with feeding teeth.

Preferably, the transmission mechanism includes a protective shell, and the protective shell is fixedly connected to the top right side of the inner cavity of the screening frame, the top of the inner cavity of the protective shell is fixedly connected with an electric push rod, and the electric push rod The power end is fixedly connected to the top of the L-shaped plate.

Preferably, the deflection mechanism includes a U-shaped plate, and the U-shaped plate is attached to the bottom of the first guide plate located on the right side, and the top of the U-shaped plate is fixedly connected with a slider, located on the right side The bottom of the first material guide plate is provided with a chute near the left side, and the slider is movably connected to the right side of the inner cavity of the chute, the right side of the U-shaped plate is fixedly connected with a seventh bearing, and The inner cavity of the seventh bearing is provided with a square hole and a circular tube, the inner cavity of the square hole circular tube is provided with a square rod, and the bottom of the first material guide plate on the right side is provided with a servo motor, and all the The right side of the servo motor is fixedly connected to the right side of the inner cavity of the housing, the right end of the square rod is fixedly connected to the power output end of the servo motor, and the outer side of the square hole round tube is sleeved with a transmission cone near the left end. The bottom of the transmission bevel gear is meshed with a driven bevel gear, the bottom of the U-shaped plate is fixedly connected with an eighth bearing, the bottom of the U-shaped plate is provided with a second threaded block, and the The second threaded block is provided with a second threaded hole, the inner cavity of the second threaded hole is provided with a second threaded rod, the top end of the second threaded rod passes through the inner cavity of the eighth bearing, and is connected with the driven bevel gear. The bottom center of the second threaded block is fixedly connected, the right side of the second threaded block is fixedly connected with an L-shaped rod, and the end of the L-shaped rod away from the second threaded block is hinged with the top right side of the screening frame.

Preferably, a rubber pad is fixedly connected to the middle position on the right side of the screening frame, and the length of the rubber pad is consistent with the width of the screening frame.

Compared with the prior art, the beneficial effects of the present invention are:

1. In the present invention, the crushed coal blocks are further crushed and crushed under the drive of the transmission motor through the cooperation between the second rotating rod, the second worm gear, the second worm screw, the fixed rod and the rolling roller, and the coal is crushed. The blocks are evenly spread out from the clapboard and spilled from the leak holes, and shake left and right on the screening frame through the cooperation of the rack, the limit ring, the driving gear, the first threaded rod, the first threaded block and the support arm. During the screening process, the coal lumps in the screening frame are moved and spread out to both sides, thereby further improving the screening efficiency;

2. The present invention uses the mutual cooperation between the U-shaped plate, the servo motor, the square rod, the square-hole round pipe, the transmission bevel gear, the driven bevel gear, the second threaded block, the second threaded rod and the L-shaped rod. When there are too many impurities in the screening frame, the right side of the screening frame is deflected downward by the servo motor, and the second discharge port is opened through the cooperation of the electric push rod and the L-shaped rod, so that the impurities are sent back, which not only improves the The screening efficiency is improved, and the labor intensity of staff cleaning impurities is reduced.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the top view of the rotating gear of the component of the present invention;

Fig. 3 is the enlarged view of A place in Fig. 1;

FIG. 4 is an enlarged view of B in FIG. 1 .

Labels in the figure: 1. Shell; 2. Supporting legs; 3. Feeding frame; 4. Cover plate; 5. Crushing roller; 6. Rotating shaft; 7. Third worm gear; 8. Third worm; ; 10, the second rotating rod; 11, the rolling roller; 12, the second worm gear; 13, the second worm; 14, the double sheave; 15, the second single sheave; 16, the first single sheave; 17, Transmission motor; 18, servo motor; 19, the first guide plate; 20, screening frame; 21, limit ring; 22, sleeve; 23, spring; 24, T-bar; 25, the second guide plate; 26, filter screen; 27, rotating gear; 28, rubber pad; 29, cam; 30, first rotating rod; 31, first worm gear; 32, first worm screw; 33, L-shaped plate; 34, electric push rod; 35, U-shaped plate; 36, square hole round pipe; 37, square rod; 38, transmission bevel gear; 39, driven bevel gear; 40, second threaded block; 41, second threaded rod; 42, L 43, the first threaded block; 44, the first threaded rod; 45, the drive gear; 46, the rack; 47, the support arm; 48, the roller;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figures 1-4, the present invention provides a technical solution: a pretreatment equipment for coal mine development that increases the material scattering area during pulverization, including a shell 1, and the bottom of the shell 1 is fixedly connected with supports near the four corners Leg 2, a first discharge port is opened at the middle position of the bottom of the casing 1, a feeding frame 3 is inserted at the middle position of the top of the casing 1, and a cover plate 4 is attached to the top of the feeding frame 3, and The right side of the cover plate 4 is hinged with the feeding frame 3, the inner cavity of the shell 1 is provided with a crushing mechanism near the top, the inner cavity of the shell 1 is fixedly connected with a partition 9 near the top, and the top of the partition 9 is provided with a crushing mechanism. There is a spreading mechanism, a number of leak holes are opened on the partition plate 9, first material guide plates 19 are provided on the left and right sides of the bottom of the partition plate 9, and the sides of the two first material guide plates 19 away from each other are respectively The left and right sides of the inner cavity of the casing 1 are fixedly connected, the inner cavity of the casing 1 is provided with a screening frame 20 near the bottom, and the bottom of the inner cavity of the screening frame 20 is fixedly connected with a filter screen 26, and the inner cavity of the screening frame 20 is provided with a dial The left side of the inner cavity of the casing 1 is fixedly connected with a sleeve 22 near the bottom, and the left side of the inner cavity of the sleeve 22 is fixedly connected with a spring 23, and the right end of the spring 23 is fixedly connected with a T-shaped rod 24, and the T-shaped One end of the rod 24 away from the spring 23 is hinged with the left side of the screening frame 20, a rubber pad 28 is fixedly connected at the middle position of the right side of the screening frame 20, and the length of the rubber pad 28 is consistent with the width of the screening frame 20, reducing noise, The right side of the screening frame 20 is provided with a cam 29, and the top of the cam 29 is fixedly connected to the first rotating rod 30 near the left side, and the right side of the inner cavity of the housing 1 is fixedly connected to the bottom near the bottom. A first bearing is fixedly connected near the left side. The top end of the first rotating rod 30 is inserted into the first bearing cavity. A first worm 32 is engaged, a second bearing is fixedly connected to the right side of the housing 1 near the bottom, a support plate is fixedly connected to the right side of the housing 1 near the bottom, and a transmission motor 17 is fixedly connected to the top of the support plate, The right end of the first worm 32 penetrates the inner cavity of the second bearing and is fixedly connected with the power output end of the transmission motor 17. The bottom of the right side of the screening frame 20 is provided with a second outlet, and the left side of the second outlet is The L-shaped plate 33 is fitted, the top of the L-shaped plate 33 is provided with a lifting mechanism, the top of the screening frame 20 is provided with a deflection mechanism, and the left and right sides of the bottom of the inner cavity of the housing 1 are fixedly connected with a second material guide plate 25.

The spreading mechanism includes a second rotating rod 10, and the second rotating rod 10 is movably connected at the top middle position of the partition plate 9, and the top end of the second rotating rod 10 is fixedly connected with a second worm gear 12, and the rear of the second worm gear 12 is connected. A second worm 13 is engaged on the side, a third bearing is fixedly connected to the right side of the housing 1 near the top, and the right end of the second worm 13 penetrates the inner cavity of the third bearing, and is fixedly connected with a double sheave 14. The first worm The outer side of 32 near the right end is sleeved with a first single sheave 16, a first belt is arranged between the double sheave 14 and the first single sheave 16, and the double sheave 14 and the first single sheave 16 pass through. The first belt drive connection, the outer side wall of the second rotating rod 10 is fixedly connected with several fixed rods, and the one end of the several fixed rods away from the second rotating rod 10 is movably connected with the rolling roller 11, which increases the spread of materials. area to improve screening efficiency.

The crushing mechanism includes two crushing rollers 5, and the two crushing rollers 5 are located in the inner cavity of the shell 1 near the top, the two crushing rollers 5 are arranged on the left and right, and the inner cavity of the two crushing rollers 5 are provided with rotating shafts. 6. Two fourth bearings are fixedly connected to the front and rear sides of the inner cavity of the housing 1 near the top, and the two fourth bearings are arranged left and right, and the front and rear ends of the two rotating shafts 6 are respectively inserted into the adjacent No. There are four bearing inner cavities. The outer sides of the two rotating shafts 6 are sleeved with rotating gears 27 near the rear end, and the two rotating gears 27 are mutually meshed. The worm gear 7, and the top of the third worm gear 7 is engaged with a third worm 8, the right side of the housing 1 is fixedly connected with a fifth bearing near the top, and the right end of the third worm 8 penetrates the fifth bearing cavity and is fixedly connected There is a second single sheave 15, a second belt is arranged between the second single sheave 15 and the double sheave 14, and the second single sheave 15 and the double sheave 14 are connected by a second belt drive, so that the material Carry out crushing pretreatment.

The feeding mechanism includes a connecting plate, and the connecting plate is located at the middle position of the top of the inner cavity of the screening frame 20, the front and rear sides of the screening frame 20 are respectively fixedly connected with the front and rear sides of the inner cavity of the screening frame 20, and the middle position of the connecting plate is fixed. A sixth bearing is connected, a first threaded block 43 is provided at the middle position of the bottom of the connecting plate, and a first threaded hole is opened on the first threaded block 43, and the inner cavity of the first threaded hole is provided with a first threaded rod 44, The top end of the first threaded rod 44 penetrates the inner cavity of the sixth bearing, and is fixedly connected with a driving gear 45. The rear side of the driving gear 45 is engaged with a rack 46, and the top left side of the screening frame 20 is fixedly connected with the limit ring 21, and The left end of the rack 46 penetrates the inner cavity of the limit ring 21 and is movably connected to the left side of the inner cavity of the housing 1 . The left and right sides of the first threaded block 43 are hinged with two support arms 47 , and the two support arms A roller 48 is hingedly connected to the side of the 47 away from the first threaded block 43 , and the outer side walls of the two rollers 48 are fixedly connected with feeding teeth 49 to improve the screening efficiency.

The transmission mechanism includes a protective shell, and the protective shell is fixedly connected to the top of the inner cavity of the screening frame 20 at the right side, the top of the inner cavity of the protective shell is fixedly connected with an electric push rod 34, and the power end of the electric push rod 34 is connected to the L-shaped plate 33. The top of the fixed connection, improve the automation effect.

The deflection mechanism includes a U-shaped plate 35, and the U-shaped plate 35 is attached to the bottom of the first material guide plate 19 located on the right side, the top of the U-shaped plate 35 is fixedly connected with a slider, and the first material guide plate located on the right side is fixedly connected with a slider. The bottom of the plate 19 is provided with a chute near the left side, and the slider is movably connected to the right side of the chute cavity. The right side of the U-shaped plate 35 is fixedly connected with a seventh bearing, and the seventh bearing cavity is provided with a square. The hole round tube 36, the inner cavity of the square hole round tube 36 is provided with a square rod 37, the bottom of the first material guide plate 19 located on the right side is provided with a servo motor 18, and the right side of the servo motor 18 is connected with the casing 1. The right side of the inner cavity is fixedly connected, the right end of the square rod 37 is fixedly connected with the power output end of the servo motor 18, the outer side of the square hole round tube 36 is sleeved with a transmission bevel gear 38 near the left end, and the bottom of the transmission bevel gear 38 is sleeved. The driven bevel gear 39 is engaged, the bottom of the U-shaped plate 35 is fixedly connected with the eighth bearing, the bottom of the U-shaped plate 35 is provided with a second threaded block 40, and the second threaded block 40 is provided with a second threaded hole, The inner cavity of the second threaded hole is provided with a second threaded rod 41 , and the top end of the second threaded rod 41 penetrates the inner cavity of the eighth bearing and is fixedly connected with the center of the bottom of the driven bevel gear 39 . The right side is fixedly connected with an L-shaped rod 42, and one end of the L-shaped rod 42 away from the second threaded block 40 is hinged with the top right side of the screening frame 20, which is convenient for cleaning impurities from the screening frame 20 and reduces the labor of the staff. strength.

Working principle: when the present invention is in use, the drive motor 17 is started by an external power supply, the drive motor 17 works to drive the first worm 32 to rotate, the first worm 32 rotates to drive the first single sheave 16 to rotate, and drives the double groove through the first belt. The wheel 14 rotates, the double sheave 14 rotates and drives the second single sheave 15 to rotate through the second belt, the second single sheave 15 rotates to drive the third worm 8 to rotate, the third worm 8 rotates to drive the third worm gear 7 to rotate, and the third worm 8 rotates. The rotation of the worm wheel 7 drives the rotation of the right shaft 6, and drives the shaft 6 on the other side to rotate at the same time through the meshing of the two rotating gears 27, thereby driving the two pulverizing rollers 5 to rotate, opening the cover 4, and excavating the coal blocks. The material is poured into the inner cavity of the shell 1 through the feeding frame 3, and the coal lumps are crushed by the rotation of the two crushing rollers 5. The crushed material falls on the partition 9, and the double groove wheel 14 rotates to drive the second crusher. The rotation of the worm 13, the rotation of the second worm 13 drives the rotation of the second worm wheel 12, the rotation of the second worm wheel 12 drives the rotation of the second rotating rod 10, the rotation of the second rotating rod 10 drives the rotation of several rolling rollers 11, and the rotation of several rolling rollers 11 The rotation further crushes and crushes the coal block, and evenly spreads the coal block particles from the leak holes on the partition plate 9, and the falling coal block particles fall into the inner cavity of the screening frame 20, and the first worm 32 rotates to drive the second block. A worm wheel 31 rotates, the rotation of the first worm wheel 31 drives the rotation of the first rotating rod 30, the rotation of the first rotating rod 30 drives the cam 29 to rotate, and the rotation of the cam 29 pushes the screening frame 20 to reciprocate left and right, and the coal lumps are shaken and screened left and right, And the screening frame 20 reciprocates left and right while driving the first threaded rod 44 to rotate forward and reverse through the engagement of the driving gear 45 and the rack 46, and the forward and reverse rotation of the first threaded rod 44 drives the first threaded block 43 to reciprocate up and down, and The two rollers 48 are driven to move adjacent to each other and away from each other, so that the feeding teeth 49 on the outside of the two rollers 48 push the coal lumps accumulated at the center of the inner cavity of the screening frame 20 to the left and right sides of the inner cavity of the screening frame 20. so as to improve the screening efficiency. The screened coal block material is discharged through the first discharge port. When the impurities accumulated in the screening frame 20 need to be cleaned and collected, the servo motor 18 is activated through an external power supply, and the servo motor 18 works to drive the side. The rod 37 rotates, the rotation of the square rod 37 drives the rotation of the square-hole circular tube 36, and the rotation of the square-hole circular tube 36 drives the second threaded rod 41 to rotate through the meshing of the transmission bevel gear 38 and the driven bevel gear 39, and the second threaded rod 41 rotates. The rotation drives the second threaded block 40 to move downward, and the second threaded block 40 moves downward through the L-shaped rod 42 to push the right side of the screening frame 20 to deflect downward, and simultaneously activate the electric push rod 34 to pull the L-shaped plate 33 to move upward to open The second discharge port, so that the impurities accumulated in the screening frame 20 are poured out from the second discharge port, which is convenient for collection.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A pre-processing device is used for the development of a coal mine that increases the area of material scattered during pulverization, comprising a shell (1), characterized in that: the bottom of the shell (1) is fixedly connected with support legs (2) near the four corners. ), a first discharge port is provided at the bottom middle position of the casing (1), a feeding frame (3) is inserted at the top middle position of the casing (1), and the feeding frame ( 3) A cover plate (4) is attached to the top of the cover plate (4), and the right side of the cover plate (4) is hinged with the feeding frame (3). Mechanism, the inner cavity of the casing (1) is fixedly connected with a partition plate (9) near the top, and the top of the partition plate (9) is provided with a spreading mechanism, and the partition plate (9) is provided with A number of leak holes, first material guide plates (19) are provided at the left and right sides of the bottom of the partition plate (9), and the two first material guide plates (19) are separated from the casing The left and right sides of the inner cavity of the body (1) are fixedly connected, the inner cavity of the housing (1) is provided with a screening frame (20) near the bottom, and the bottom of the inner cavity of the screening frame (20) is fixedly connected with a filter screen (26), the inner cavity of the screening frame (20) is provided with a feeding mechanism, the left side of the inner cavity of the housing (1) is fixedly connected with a sleeve (22) near the bottom, and the sleeve ( 22) A spring (23) is fixedly connected to the left side of the inner cavity, a T-shaped rod (24) is fixedly connected to the right end of the spring (23), and one end of the T-shaped rod (24) away from the spring (23) is connected to the screen. The left side of the frame (20) is hinged, the right side of the screening frame (20) is provided with a cam (29), and the top of the cam (29) is fixedly connected with a first rotating rod (30) near the left side, The right side of the inner cavity of the housing (1) is fixedly connected with a horizontal plate near the bottom, and the bottom of the horizontal plate is fixedly connected with a first bearing near the left side, and the top end of the first rotating rod (30) is inserted Connected to the inner cavity of the first bearing, a first worm gear (31) is sleeved on the outer side of the first rotating rod (30), and a first worm gear (32) is engaged with the rear side of the first worm gear (31), A second bearing is fixedly connected to the right side of the housing (1) near the bottom, a support plate is fixedly connected to the right side of the housing (1) near the bottom, and a transmission is fixedly connected to the top of the support plate Motor (17), the right end of the first worm (32) penetrates the inner cavity of the second bearing and is fixedly connected with the power output end of the transmission motor (17), and the bottom of the right side of the screening frame (20) is provided with The second discharge port is provided with an L-shaped plate (33) on the left side of the second discharge port, the top of the L-shaped plate (33) is provided with a lifting mechanism, and the screening frame (20) A deflection mechanism is provided on the top of the casing (1), and second guide plates (25) are fixedly connected to the left and right sides of the bottom of the inner cavity of the casing (1). 2. The pretreatment equipment for coal mine development that increases the material scattering area during pulverization according to claim 1, wherein the spreading mechanism comprises a second rotating rod (10), and the second rotating The rod (10) is movably connected at the top middle position of the partition plate (9), the top end of the second rotating rod (10) is fixedly connected with a second worm wheel (12), and the rear of the second worm wheel (12) A second worm (13) is engaged with the side, a third bearing is fixedly connected to the right side of the housing (1) near the top, and the right end of the second worm (13) penetrates the inner cavity of the third bearing and is fixed A double sheave (14) is connected, the outer side of the first worm (32) is sleeved with a first single sheave (16) near the right end, and the double sheave (14) is connected to the first single sheave (16). A first belt is provided between ), and the double sheave (14) and the first single sheave (16) are connected by a first belt drive, and the outer side wall of the second rotating rod (10) is fixedly connected There are several fixed rods, and rolling rollers (11) are movably connected to one end of the several fixed rods away from the second rotating rod (10). 3. The pre-processing equipment for coal mine development that increases the material scattering area during pulverization according to claim 2, wherein the crushing mechanism comprises two pulverizing rollers (5), and the two pulverizing rollers (5) Both are located in the inner cavity of the housing (1) near the top, the two pulverizing rollers (5) are arranged on the left and right, and the inner cavity of the two pulverizing rollers (5) is provided with a rotating shaft (6) ), two fourth bearings are fixedly connected to the front and rear sides of the inner cavity of the housing (1) near the top, and the two fourth bearings are arranged left and right, and the front and rear of the two rotating shafts (6) Both ends are respectively inserted into the adjacent fourth bearing inner cavity, the outer sides of the two rotating shafts (6) near the rear end are sleeved with rotating gears (27), and the two rotating gears (27) are Intermeshing arrangement, the outer side of the rotating shaft (6) on the right side is sleeved with a third worm gear (7) near the front end, and the top of the third worm gear (7) is meshed with a third worm (8), so A fifth bearing is fixedly connected to the right side of the housing (1) near the top, and the right end of the third worm (8) penetrates the inner cavity of the fifth bearing, and is fixedly connected to a second single sheave (15), A second belt is provided between the second single sheave (15) and the double sheave (14), and the second single sheave (15) and the double sheave (14) are driven by a second belt connect. 4. The pre-processing equipment used for coal mine development to increase the material scattering area during pulverization according to claim 1, characterized in that: the feeding mechanism comprises a connecting plate, and the connecting plate is located in the screening frame (20) At the middle position of the top of the inner cavity of the screen, the front and rear sides of the screening frame (20) are respectively fixedly connected with the front and rear sides of the inner cavity of the screening frame (20), and a sixth bearing is fixedly connected at the middle position on the connecting plate, A first threaded block (43) is provided at the middle position of the bottom of the connecting plate, and a first threaded hole is opened on the first threaded block (43), and the inner cavity of the first threaded hole is provided with a first threaded hole. A threaded rod (44), the top end of the first threaded rod (44) penetrates through the inner cavity of the sixth bearing, and is fixedly connected with a driving gear (45), the rear side of the driving gear (45) is engaged with a rack (46) ), a limit ring (21) is fixedly connected to the top left side of the screening frame (20), and the left end of the rack (46) penetrates the inner cavity of the limit ring (21), and is connected to the housing (1). ) is movably connected to the left side of the inner cavity of the first threaded block (43), two support arms (47) are hinged on the left and right sides of the first threaded block (43), and the two support arms (47) are far away from the first threaded block (43). A roller (48) is jointly hinged on one side of the two rollers (48), and the outer side walls of the two rollers (48) are fixedly connected with feeding teeth (49). 5. A kind of pretreatment equipment for coal mine development that increases the material scattering area during pulverization according to claim 1, characterized in that: the transmission mechanism comprises a protective shell, and the protective shell is fixedly connected to the screening frame (20 ), an electric push rod (34) is fixedly connected to the top of the inner cavity of the protective shell, and the power end of the electric push rod (34) is fixedly connected to the top of the L-shaped plate (33). . 6 . The pretreatment equipment for coal mine development according to claim 1 that increases the material scattering area during pulverization, wherein the deflection mechanism comprises a U-shaped plate (35), and the U-shaped plate (35) ) is attached to the bottom of the first material guide plate (19) located on the right side, the top of the U-shaped plate (35) is fixedly connected with a slider, and the first material guide plate (19) located on the right side A chute is opened at the bottom near the left side, and the slider is movably connected to the right side of the inner cavity of the chute, a seventh bearing is fixedly connected to the right side of the U-shaped plate (35), and the seventh bearing A square-hole circular tube (36) is arranged through the inner cavity, and a square rod (37) is arranged through the inner cavity of the square-hole circular tube (36), and is located at the bottom of the first material guide plate (19) on the right side. A servo motor (18) is provided, and the right side of the servo motor (18) is fixedly connected to the right side of the inner cavity of the housing (1), and the right end of the square rod (37) is connected to the power of the servo motor (18) The output end is fixedly connected, the outer side of the square hole round tube (36) is sleeved with a transmission bevel gear (38) near the left end, and the bottom of the transmission bevel gear (38) is meshed with a driven bevel gear ( 39), the bottom of the U-shaped plate (35) is fixedly connected with an eighth bearing, the bottom of the U-shaped plate (35) is provided with a second threaded block (40), and the second threaded block (40) A second threaded hole is opened on the upper part, and the inner cavity of the second threaded hole is provided with a second threaded rod (41). The bottom center of the gear (39) is fixedly connected, the right side of the second threaded block (40) is fixedly connected with an L-shaped rod (42), and the L-shaped rod (42) is away from the second threaded block (40) ) is hinged to the top right side of the screening frame (20). 7. A kind of pretreatment equipment for coal mine development according to claim 1 that increases the material scattering area during pulverization, wherein a rubber pad (28) is fixedly connected at the middle position of the right side of the screening frame (20). ), and the length of the rubber pad (28) is consistent with the width of the screening frame (20).

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