CN115501937A

CN115501937A - Colliery reducing mechanism with screening function

Info

Publication number: CN115501937A
Application number: CN202211255071.7A
Authority: CN
Inventors: 钟行飞; 钟志强; 钟志棋; 钟健
Original assignee: Huashan Shale Mine Of Chongyi County Gaopi Changfei Mining Co ltd
Current assignee: Huashan Shale Mine Of Chongyi County Gaopi Changfei Mining Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-12-23

Abstract

The invention relates to a coal mine crushing device, in particular to a coal mine crushing device with a screening function. The invention provides a coal mine crushing device with a screening function, which is convenient for cleaning a screen and avoiding the screen from being blocked. The invention provides a coal mine crushing device with a screening function, which comprises a base, a frame body, a crushing frame and crushing rollers, wherein the frame body is fixedly arranged at the lower part of the base, the crushing frame is fixedly arranged at the upper part of the frame body, and the crushing rollers are symmetrically and rotatably arranged on the crushing frame from left to right. Under the effect of cam rotation constantly extrudees the lug, and then makes the screen cloth constantly slide from top to bottom to realized shaking the sieve to kibbling colliery, fixed plate rebound drives the baffle and upwards slides and open the left side in the framework, and the staff of being convenient for clears up the colliery on the screen cloth, avoids the screen cloth to block up.

Description

Colliery reducing mechanism with screening function

Technical Field

The invention relates to a coal mine crushing device, in particular to a coal mine crushing device with a screening function.

Background

Coal is a main solid fuel resource, is one kind of combustible organic rock, and is formed by gradually piling up luxuriant plants growing in a certain geological age into thick layers in a proper geological environment, burying the thick layers at the bottom of water or in silt and performing the natural plum blossom effect in a long geological age.

Patent publication No. CN207222014U discloses a coal powder crushing device capable of screening, which comprises a feeding box, a first bearing seat, a first rotating shaft, a feeding hopper, a frame, a second bearing seat, a crushing box, a first sealing ring, a first gear, a second rotating shaft and the like; the ground is provided with a grinding box, the middle of the top of the grinding box is provided with a third through hole, the bottom in the grinding box is provided with a collecting frame, the lower side of the right wall of the grinding box is provided with an opening, the front side of the upper part of the right wall of the grinding box is provided with a second through hole, and the rear side of the upper part of the right wall of the grinding box is provided with a third bearing seat. This reducing mechanism has reached and to have sieved kibbling colliery, can prevent to pour into the colliery stifled in the device, smashes the colliery efficient, but the effect that can filter of low power consumption, but this reducing mechanism is not convenient for clear up the colliery on the screen cloth, uses for a long time to cause the screen cloth to block up easily, influences the screening operation in colliery, reduces work efficiency.

Therefore, a coal mine crushing device with a screening function is needed to be designed, which is convenient for cleaning the screen and avoiding the screen from being blocked.

Disclosure of Invention

In order to overcome the defects that the existing crushing device is inconvenient to clean a coal mine on a screen, the screen is easy to block after being used for a long time, the screening operation of the coal mine is influenced, and the working efficiency is reduced, the invention has the technical problems that: the utility model provides a colliery reducing mechanism who has the screening function that is convenient for clear up the screen cloth, avoids screen cloth jam.

The utility model provides a colliery reducing mechanism with screening function, the on-line screen storage device comprises a base, the framework, smash the frame, crushing roller, first motor, first gear, first guide arm, the baffle, the screen cloth, the second guide arm, elevating system and tremble sieve mechanism, the fixed framework that is provided with in base lower part, the fixed crushing frame that is provided with in framework upper portion, it is provided with crushing roller to smash the bilateral symmetry rotation on the frame, the fixed first motor that is provided with in crushing frame right side front side, the output shaft of first motor passes through the coupling joint with the crushing roller front end of right part, both ends are all fixed and are provided with first gear around two crushing rollers, two close first gear intermeshing, the fixed first guide arm that is provided with around the upper left portion of framework, slidingtype baffle is provided with between two first guide arms, the baffle blocks left side in the framework, both sides are all fixed and are provided with the second guide arm around the framework, slidingtype is provided with the screen cloth that can carry out the screening to the granule, the screen cloth is located the framework, framework upper left portion is provided with the elevating system that can carry out automatic rising to making the baffle, the screen cloth lower part is provided with can tremble the mechanism that can make up-down slip about the colliery.

In a preferred embodiment of the present invention, the lifting mechanism includes a first support frame, a second motor, a screw rod, a fixing plate and a first elastic member, the first support frame is fixedly disposed on the left upper portion of the frame body, the second motor is fixedly disposed on the first support frame, the screw rod is connected to an output shaft of the second motor through a coupling, the fixing plate is disposed on the screw rod in a threaded manner, the fixing plate is connected to the top of the baffle plate, the first elastic member is connected between the baffle plate and the upper portions of the two first guide rods, and the first elastic member is sleeved on the first guide rods.

In a preferred embodiment of the present invention, the screen shaking mechanism includes a second support frame, a third motor, a protrusion, a second elastic member, a rotating shaft and a cam, the second support frame is fixedly disposed on the rear side of the lower portion of the frame body, the third motor is fixedly disposed on the second support frame, the protrusions are fixedly disposed on the front and rear sides of the screen, the second elastic member is connected between the top of the screen and the upper portions of the two second guide rods, the second elastic member is sleeved on the second guide rods, the rotating shaft is rotatably disposed on the bottom of the frame body, an output shaft of the third motor is connected with the rear end of the rotating shaft through a coupling, the cam is symmetrically and fixedly disposed on the front and rear sides of the rotating shaft, and the cam rotates to press the protrusions to move upward.

In a preferred embodiment of the invention, the coal mine cleaning device further comprises a cleaning mechanism capable of cleaning large coal mines on the screen, the cleaning mechanism comprises a guide rod, a push plate and a third elastic member, the guide rod is fixedly arranged on the right side of the frame body, the push plate capable of cleaning the large coal mines on the screen is slidably arranged on the guide rod, the third elastic member is connected between the push plate and the right part of the guide rod, and the third elastic member is sleeved on the guide rod.

In a preferred embodiment of the invention, the device further comprises a dredging mechanism capable of dredging the screen to avoid blockage, the dredging mechanism comprises a mounting shell, a brush and a fourth elastic part, the mounting shell is fixedly arranged on the right side of the push plate, the brush capable of dredging the screen to avoid blockage is arranged in the mounting shell in a sliding manner, and eight fourth elastic parts are uniformly connected between the top of the brush and the inside of the mounting shell at intervals.

In a preferred embodiment of the present invention, the pushing mechanism is further included to enable the pushing plate to automatically slide leftward, the pushing mechanism includes a contact plate, a guide block and a sliding frame, the contact plate is symmetrically fixed on the right portion of the pushing plate in front and back, the guide block is fixed on the right side of the frame body, the guide block is located below the guide rod, the sliding frame is slidably disposed on the guide block, the left portion of the sliding frame is connected with the top of the baffle plate, and the contact plate is in contact with the sliding frame.

In a preferred embodiment of the invention, the coal mine crushing device further comprises an adjusting mechanism capable of adjusting the size of coal mine crushing, the adjusting mechanism comprises a supporting seat, a rotating handle, a second gear, a first sieve plate, a rack and a second sieve plate, the supporting seat is fixedly arranged on the right side of the crushing frame, the rotating handle is rotatably arranged on the supporting seat, the second gear is fixedly arranged on the rotating handle, the first sieve plate capable of making coal mine particles smaller is symmetrically arranged in the crushing frame in a sliding mode in a front-back mode, the rack is fixedly arranged on the right side of the first sieve plate and is meshed with the second gear, the second sieve plate is fixedly arranged on the lower portion in the crushing frame, and the second sieve plate is located below the first sieve plate.

In a preferred embodiment of the present invention, the first motor is a servo motor.

As can be seen from the above description of the structure of the present invention, the design starting point, concept and advantages of the present invention are: 1. under the effect of cam rotation constantly extrudees the lug, and then makes the screen cloth constantly slide from top to bottom to realized shaking the sieve to kibbling colliery, fixed plate rebound drives the baffle and upwards slides and open the left side in the framework, and the staff of being convenient for clears up the colliery on the screen cloth, avoids the screen cloth to block up.

2. The push plate slides leftwards to push out the coal mine on the screen quickly, so that workers do not need to use tools to pull out the coal mine.

3. The brush constantly goes up the gliding and dredges the screen cloth, prevents that the push pedal from pushing out the colliery, with the colliery compaction on the screen cloth, leads to the screen cloth to block up.

4. The sliding frame slides upwards to drive the contact plate to move leftwards, and the contact plate moves leftwards to drive the push plate to slide leftwards, so that the coal mine is pushed out when the baffle plate opens the frame body.

5. Under the effect of first sieve and second sieve, can make the staff adjust according to the tiny degree of colliery granule.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a partial sectional structural schematic diagram of the present invention.

Fig. 4 is a schematic perspective view of the lifting mechanism of the present invention.

Fig. 5 is a schematic view of a first partial body structure of the shaker mechanism of the present invention.

Fig. 6 is a schematic view of a second partial body structure of the shaker mechanism of the present invention.

Fig. 7 is a schematic perspective view of the cleaning mechanism of the present invention.

Fig. 8 is a schematic perspective structure view of the dredging mechanism of the present invention.

Fig. 9 is a schematic sectional structure view of the dredging mechanism of the invention.

Fig. 10 is a schematic perspective view of the pushing mechanism of the present invention.

Fig. 11 is a schematic perspective view of the adjusting mechanism of the present invention.

Fig. 12 is a partial cross-sectional structural schematic view of an adjustment mechanism of the present invention.

In the figure: 1. the device comprises a base, 2, a frame body, 3, a crushing frame, 4, a crushing roller, 5, a first motor, 6, a first gear, 7, a first guide rod, 8, a baffle plate, 9, a screen, 901, a second guide rod, 10, a lifting mechanism, 1001, a first support frame, 1002, a second motor, 1003, a screw rod, 1004, a fixing plate, 1005, a first elastic piece, 11, a screen shaking mechanism, 1101, a second support frame, 1102, a third motor, 1103, a bump, 1104, a second elastic piece, 1105, a rotating shaft, 1106, a cam, 12, a cleaning mechanism, 1201, a guide rod, 1202, a push plate, 1203, a third elastic piece, 13, a dredging mechanism, 1301, a mounting shell, 1302, a brush, 1303, a fourth elastic piece, 14, a pushing mechanism, 1401, a contact plate, 1402, a guide block, 1403, a sliding frame, 15, an adjusting mechanism, 1501, a support seat, 1502, a rotating handle, 1503, a second gear, 1505, a rack, 1506 and a second screen plate.

Detailed Description

Although the present invention may be described with respect to particular applications or industries, those skilled in the art will recognize the broader applicability of the invention. Those of ordinary skill in the art will recognize other factors such as: terms such as above, below, upward, downward, and the like are used to describe the accompanying drawings and are not meant to limit the scope of the invention, which is defined by the appended claims. Such as: any numerical designation of first or second, and the like, is merely exemplary and is not intended to limit the scope of the invention in any way.

Example 1

Referring to fig. 1-6, a coal mine crushing device with a screening function includes a base 1, a frame 2, a crushing frame 3, crushing rollers 4, a first motor 5, a first gear 6, a first guide rod 7, a baffle 8, a screen 9, a second guide rod 901, an elevating mechanism 10 and a screen shaking mechanism 11, the frame 2 is welded on the lower portion of the base 1, the crushing frame 3 is fixedly arranged on the upper portion of the frame 2, the crushing rollers 4 are symmetrically and rotatably arranged on the crushing frame 3, the first motor 5 is fixedly arranged on the right front side of the crushing frame 3, an output shaft of the first motor 5 is connected with the front end of the crushing roller 4 on the right portion through a coupler, the first motor 5 is a servo motor, first gears 6 are fixedly arranged on the front and rear ends of the two crushing rollers 4, the two adjacent first gears 6 are meshed with each other, the first guide rod 7 is symmetrically welded on the front and rear sides of the left upper portion of the frame 2, the baffle 8 is slidably arranged between the two first guide rods 7, the baffle 8 is arranged on the left side of the frame 2, the front and rear sides of the frame 2, the two guide rods are fixedly arranged with the second guide rods 9, the screen lifting screen 2, the screen lifting mechanism 11 is arranged on the lower portion of the screen lifting mechanism 11, and the screen 2, and the screen is capable of automatically shaking mechanism 11.

Referring to fig. 4, the lifting mechanism 10 includes a first support frame 1001, a second motor 1002, a screw shaft 1003, a fixing plate 1004 and a first elastic member 1005, the first support frame 1001 is welded on the left upper portion of the frame 2, the second motor 1002 is fixedly disposed on the first support frame 1001, the screw shaft 1003 is connected to an output shaft of the second motor 1002 through a coupling, the fixing plate 1004 is disposed on the screw shaft 1003 in a threaded manner, the fixing plate 1004 is connected to the top of the baffle 8, the first elastic member 1005 is connected between the baffle 8 and the upper portions of the two first guide rods 7, and the first elastic member 1005 is sleeved on the first guide rod 7.

Referring to fig. 5-6, the screen shaking mechanism 11 includes a second support frame 1101, a third motor 1102, a bump 1103, a second elastic member 1104, a rotation shaft 1105 and a cam 1106, the second support frame 1101 is welded to the rear side of the lower portion of the frame 2, the third motor 1102 is fixedly disposed on the second support frame 1101, the bumps 1103 are fixedly disposed on the front and rear sides of the screen 9, the second elastic member 1104 is connected between the top of the screen 9 and the upper portions of the two second guide rods 901, the second elastic member 1104 is sleeved on the second guide rods 901, the rotation shaft 1105 is rotatably disposed on the bottom of the frame 2, an output shaft of the third motor 1102 is connected with the rear end of the rotation shaft 1105 through a coupler, the cam 1106 is symmetrically keyed on the front and rear of the rotation shaft 1105, and the cam 1106 rotates to press the bump 1103 to move upward.

When a coal mine needs to be crushed, a worker places a container for loading the coal mine at the lower part of the frame body 2, then the worker pours the coal mine into the crushing frame 3, after the coal mine is poured, the worker starts the first motor 5, the output shaft of the first motor 5 rotates to drive the crushing roller 4 at the right part to rotate, under the mutual meshing action of the two first gears 6, the crushing roller 4 at the left part rotates, the two crushing rollers 4 rotate to crush the coal mine, the crushed coal mine falls onto the screen 9, at this time, the worker starts the third motor 1102, the output shaft of the third motor 1102 rotates to drive the rotating shaft 1105 to rotate, the rotating shaft 1105 rotates to drive the cam 1106 to rotate, the cam 1106 rotates to extrude the lug 1103 to move upwards, the lug 1103 moves upwards to drive the screen 9 to move upwards, the second elastic member 1104 is compressed therewith, and the lug 1103 is not extruded when the cam 1106 rotates, the second elastic member 1104 is reset to drive the screen cloth 9 to slide downwards, the screen cloth 9 slides downwards to drive the bump 1103 to move downwards to reset, the cam 1106 rotates to continuously press the bump 1103, so that the screen cloth 9 slides upwards and downwards continuously, the crushed coal mine is shaken and collected, the fine coal mine falls into a container through the screen cloth 9, the fine coal mine is collected in a centralized manner, after the use, a worker closes the first motor 5 and the third motor 1102 to stop the operation, when the large coal mine on the screen cloth 9 needs to be cleaned, the worker starts the second motor 1002, the output shaft of the second motor 1002 rotates to drive the screw 1003 to rotate, the screw rotates to drive the fixing plate 1004 to move upwards, the fixing plate 1004 to move upwards to drive the baffle 8 to slide upwards, the first elastic member 1005 is compressed, the baffle 8 slides upwards to open the left side in the frame body 2, and then the worker uses a tool to pull out the large coal mine on the screen cloth 9, avoid screen cloth 9 to block up, after whole the dialling, the output shaft reversal of staff's control second motor 1002, the output shaft reversal of second motor 1002 drives the lead screw 1003 reversal, lead screw 1003 reversal drives fixed plate 1004 downstream, fixed plate 1004 downstream drives baffle 8 and slides downwards and restores to the throne and block left side in the framework 2, first elastic component 1005 resets thereupon, then the bold colliery that the staff will dial out, carry out the regrinding, because first motor 5 is servo motor, can accurate control rotational speed, make this device operation stable.

Example 2

Referring to fig. 1 and 7, based on embodiment 1, the coal mine screening machine further includes a cleaning mechanism 12, the cleaning mechanism 12 can clean a coal mine with a large size on the screen 9, the cleaning mechanism 12 includes a guide rod 1201, a push plate 1202 and a third elastic member 1203, the guide rod 1201 is fixedly disposed on the right side of the frame 2, the push plate 1202 is slidably disposed on the guide rod 1201, the push plate 1202 can clean the coal mine with a large size on the screen 9, the third elastic member 1203 is connected between the push plate 1202 and the right portion of the guide rod 1201, and the third elastic member 1203 is sleeved on the guide rod 1201.

After fixed plate 1004 rebound drives baffle 8 and upwards slides and opens left side in with framework 2, the staff promotes push pedal 1202 and slides left, and third elastic component 1203 is compressed thereupon, and push pedal 1202 slides left and pushes out the colliery on the screen cloth 9 fast to no longer need the staff to use the instrument to dial out the colliery, after the colliery was pushed out, the staff loosened push pedal 1202, and third elastic component 1203 resets thereupon and drives push pedal 1202 and slide right and reset.

Referring to fig. 8-9, the screen cloth dredging device further comprises a dredging mechanism 13, the dredging mechanism 13 can dredge the screen cloth 9 to avoid blockage, the dredging mechanism 13 comprises an installation shell 1301, a brush 1302 and a fourth elastic part 1303, the installation shell 1301 is fixedly arranged on the right side of the push plate 1202, the brush 1302 is arranged in the installation shell 1301 in a sliding mode, the brush 1302 can dredge the screen cloth 9 to avoid blockage, and the eight fourth elastic parts 1303 are evenly connected between the top of the brush 1302 and the inside of the installation shell 1301 at intervals.

The push plate 1202 slides leftwards to drive the hairbrush 1302 to move leftwards through the mounting frame, the hairbrush 1302 continuously slides upwards and downwards under the effect of the screen 9, the fourth elastic part 1303 is continuously compressed and reset, the hairbrush 1302 continuously slides upwards and downwards to dredge the screen 9, and the coal mine is prevented from being compacted on the screen 9 when the push plate 1202 pushes out a coal mine, so that the screen 9 is blocked.

Referring to fig. 1 and 10, the push mechanism 14 is further included, the push mechanism 14 can enable the push plate 1202 to automatically slide leftward, the push mechanism 14 includes a contact plate 1401, a guide block 1402 and a sliding frame 1403, the contact plate 1401 is symmetrically fixed on the right of the push plate 1202 in a front-back manner, the guide block 1402 is welded on the right of the frame 2, the guide block 1402 is located below the guide rod 1201, the sliding frame 1403 is slidably disposed on the guide block 1402, the left of the sliding frame 1403 is connected to the top of the baffle 8, and the contact plate 1401 is in contact with the sliding frame 1403.

Sliding on the baffle 8 drives the sliding frame 1403 to slide upwards, the sliding frame 1403 slides upwards to drive the contact plate 1401 to move leftwards, the contact plate 1401 moves leftwards to drive the push plate 1202 to slide leftwards, accordingly, the coal mine is pushed out when the baffle 8 opens the frame body 2, when the baffle 8 slides downwards to reset and drives the sliding frame 1403 to slide downwards to reset, the sliding frame 1403 slides downwards to not extrude the contact plate 1401, and then the push plate 1202 slides rightwards to reset to drive the contact plate 1401 to reset rightwards.

Referring to fig. 1 and 12, the coal mine crushing device further comprises an adjusting mechanism 15, the adjusting mechanism 15 can adjust the size of coal mine crushing, the adjusting mechanism 15 comprises a supporting seat 1501, a rotating handle 1502, a second gear 1503, a first sieve plate 1504, a rack 1505 and a second sieve plate 1506, the supporting seat 1501 is fixedly arranged on the right side of the crushing frame 3, the rotating handle 1502 is rotatably arranged on the supporting seat 1501, the second gear 1503 is fixedly arranged on the rotating handle 1502, the first sieve plate 1504 is symmetrically arranged in the crushing frame 3 in a sliding mode in a front-back mode, coal mine particles can be fine through the first sieve plate 1504, the rack 1505 is fixedly arranged on the right side of the first sieve plate 1504, the second sieve plate 1506 is welded to the inner lower portion of the crushing frame 3, and the second sieve plate 1506 is located below the first sieve plate 1504.

When needing to smash the comparatively tiny coal mine of granule, crushing roller 4 rotates and smashes the coal mine, under the effect of first sieve 1504, make the coal mine reach suitable size and just can drop to screen cloth 9 through first sieve 1504, when needing to smash the coal mine that the granule is normal size, the staff rotates turning handle 1502 and drives second gear 1503 rotation, second gear 1503 rotation drives rack 1505 dorsal shift, rack 1505 dorsal shift drives first sieve 1504 moves, under the effect of second sieve 1506, make the coal mine reach normal size and just can drop to screen cloth 9 through second sieve 1506, after the use is accomplished, staff reverse rotation turning handle 1502 drives second gear 1503 reversal, second gear 1503 reversal drives rack 1505 and moves in opposite directions, rack sieve moves in opposite directions and drives first sieve 1504 and slides in opposite directions and resets.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. A coal mine crushing device with a screening function comprises a base (1), a frame body (2), a crushing frame (3), crushing rollers (4), a first motor (5), first gears (6), first guide rods (7), baffle plates (8), screen meshes (9) and second guide rods (901), wherein the frame body (2) is fixedly arranged at the lower part of the base (1), the crushing frame (3) is fixedly arranged at the upper part of the frame body (2), the crushing rollers (4) are symmetrically and rotatably arranged on the crushing frame (3) in a left-right mode, the first motor (5) is fixedly arranged at the right front side of the crushing frame (3), an output shaft of the first motor (5) is connected with the front ends of the right crushing rollers (4) through a coupler, the first gears (6) are fixedly arranged at the front ends and the rear ends of the two crushing rollers (4), the two first gears (6) which are close to each other are meshed with each other, the first guide rods (7) are symmetrically and fixedly arranged at the front end and the rear end of the left upper part of the frame body (2), the baffle plates (8) are slidably arranged between the two first guide rods (7), the left side of the frame body (2), the second guide rods (9) are fixedly arranged in the front side and the second guide rods (901), and the second guide rods (901) which can screen meshes for screening particles in the coal mine, the screen shaking device is characterized by further comprising a lifting mechanism (10) and a screen shaking mechanism (11), wherein the lifting mechanism (10) capable of automatically lifting the baffle (8) is arranged at the upper left part of the frame body (2), and the screen shaking mechanism (11) capable of enabling the screen (9) to slide up and down is arranged at the lower part of the frame body (2).

2. The coal mine crushing device with the screening function as claimed in claim 1, wherein the lifting mechanism (10) comprises a first support frame (1001), a second motor (1002), a screw rod (1003), a fixing plate (1004) and a first elastic piece (1005), the first support frame (1001) is fixedly arranged at the upper left part of the frame body (2), the second motor (1002) is fixedly arranged on the first support frame (1001), the output shaft of the second motor (1002) is connected with the screw rod (1003) through a coupler, the fixing plate (1004) is arranged on the screw rod (1003) in a threaded manner, the fixing plate (1004) is connected with the top of the baffle (8), the first elastic piece (1005) is connected between the baffle (8) and the upper parts of the two first guide rods (7), and the first elastic piece (1005) is sleeved on the first guide rod (7).

3. The coal mine crushing device with the screening function as claimed in claim 2, wherein the screen shaking mechanism (11) comprises a second support frame (1101), a third motor (1102), a bump (1103), a second elastic member (1104), a rotating shaft (1105) and a cam (1106), the second support frame (1101) is fixedly arranged on the rear side of the lower portion of the frame body (2), the third motor (1102) is fixedly arranged on the second support frame (1101), the bumps (1103) are fixedly arranged on the front side and the rear side of the screen (9), the second elastic member (1104) is connected between the top of the screen (9) and the upper portions of the two second guide rods (901), the second elastic member (1104) is sleeved on the second guide rods (901), the rotating shaft (1105) is rotatably arranged at the bottom of the frame body (2), the output shaft of the third motor (1102) is connected with the rear end of the rotating shaft (1105) through a coupler, the cam (1106) is symmetrically and fixedly arranged on the front side and the rear side of the rotating shaft (1105), and the cam (1106) can extrude the bump (1103) to move upwards.

4. The coal mine crushing device with the screening function as claimed in claim 3, characterized by further comprising a cleaning mechanism (12) capable of cleaning large coal mines on the screen (9), wherein the cleaning mechanism (12) comprises a guide rod (1201), a push plate (1202) and a third elastic part (1203), the guide rod (1201) is fixedly arranged on the right side of the frame body (2), the push plate (1202) capable of cleaning large coal mines on the screen (9) is slidably arranged on the guide rod (1201), the third elastic part (1203) is connected between the push plate (1202) and the right part of the guide rod (1201), and the third elastic part (1203) is sleeved on the guide rod (1201).

5. The coal mine crushing device with the screening function as claimed in claim 4, which is characterized by further comprising a dredging mechanism (13) capable of dredging the screen (9) and avoiding blockage, wherein the dredging mechanism (13) comprises an installation shell (1301), a brush (1302) and a fourth elastic part (1303), the installation shell (1301) is fixedly arranged on the right side of the push plate (1202), the brush (1302) capable of dredging the screen (9) and avoiding blockage is arranged in the installation shell (1301) in a sliding mode, and eight fourth elastic parts (1303) are uniformly connected between the top of the brush (1302) and the inside of the installation shell (1301) at intervals.

6. The coal mine crushing device with the screening function as claimed in claim 5, which is characterized by further comprising a pushing mechanism (14) capable of enabling the pushing plate (1202) to automatically slide leftwards, wherein the pushing mechanism (14) comprises a contact plate (1401), a guide block (1402) and a sliding frame (1403), the contact plate (1401) is symmetrically and fixedly arranged in front and back of the right part of the pushing plate (1202), the guide block (1402) is fixedly arranged on the right side of the frame body (2), the guide block (1402) is located below the guide rod (1201), the sliding frame (1403) is slidably arranged on the guide block (1402), the left part of the sliding frame (1403) is connected with the top of the baffle plate (8), and the contact plate (1401) is in contact with the sliding frame (1403).

7. The coal mine crushing device with the screening function as claimed in claim 6, which is characterized by further comprising an adjusting mechanism (15) capable of adjusting the crushing size of the coal mine, wherein the adjusting mechanism (15) comprises a supporting seat (1501), a rotating handle (1502), a second gear (1503), a first sieve plate (1504), a rack (1505) and a second sieve plate (1506), the right side of the crushing frame (3) is fixedly provided with the supporting seat (1501), the supporting seat (1501) is rotatably provided with the rotating handle (1502), the rotating handle (1502) is fixedly provided with the second gear (1503), the front and back symmetrical sliding type in the crushing frame (3) is provided with the first sieve plate (1504) capable of enabling coal mine particles to be relatively fine, the right side of the first sieve plate (1504) is fixedly provided with the rack (1505), the rack (1505) is mutually meshed with the second gear (1503), the inner lower part of the crushing frame (3) is fixedly provided with the second sieve plate (1506), and the second sieve plate (1506) is positioned below the first sieve plate (1504).

8. A coal mine crushing apparatus with a screening function according to claim 1, wherein the first motor (5) is a servo motor.