CN113843032A

CN113843032A - Mining machinery stone crushing equipment

Info

Publication number: CN113843032A
Application number: CN202111140167.4A
Authority: CN
Inventors: 盛锂想
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2021-12-28

Abstract

The invention discloses mining machinery stone crushing equipment, which relates to the field of mining machinery equipment and comprises a screening machine, wherein a knocking chamber is arranged at the top of the screening machine, one end of the knocking chamber is movably connected with a feeding channel, a top cover is welded at the top of the knocking chamber, a stone knocking mechanism is arranged in the top cover, the bottom end of the stone knocking mechanism penetrates through the top of the knocking chamber and extends into the knocking chamber, a first driving mechanism is arranged at the top of the stone knocking mechanism, and the first driving mechanism drives the stone knocking mechanism to do reciprocating motion along the direction vertical to the knocking chamber; according to the invention, the knocking chamber is arranged, the whole block of stone is placed in the knocking chamber, the stone knocking mechanism firstly knocks the stone to perform primary crushing, and can separate soil and dust attached to the surface of the stone, so that manual operation of workers is not required, the working efficiency is improved, dust can be reduced, and the working environment is prevented from being polluted.

Description

Mining machinery stone crushing equipment

Technical Field

The invention relates to the field of mining machinery equipment, in particular to mining machinery stone crushing equipment.

Background

Mining machines are machines that are used directly for operations such as mineral mining and beneficiation. Including mining and beneficiation machinery. The working principle and structure of the prospecting machine are mostly the same as or similar to those of mining machines used for mining similar minerals, and the prospecting machine also belongs to mining machines in a broad sense. In addition, a large number of cranes, conveyors, ventilators, drainage machines, and the like are used in mining operations.

At present, the back is adopted to the ore, all need carry out the breakage with the bold ore, and generally all be staff's use tool when the rubble beat the breakage to massive big stone, then throw into the breaker with it and carry out the breakage, but the manual work is beaten, wastes time and energy, and work efficiency is low, and simultaneously, the surface itself of stone will be infected with a large amount of earth dust, and the manual work is beaten and is caused raise dust easily, pollutes operational environment.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the stone crushing equipment for the mining machinery, and the stone crushing equipment for the mining machinery is provided with the knocking chamber, so that a whole block of stone is placed in the knocking chamber, the stone knocking mechanism firstly knocks the stone to perform primary crushing, and can separate soil and dust attached to the surface of the stone, manual operation of workers is not needed, the working efficiency is improved, raised dust can be reduced, and the pollution to the working environment is avoided;

meanwhile, when the crusher is used, after the crusher is initially crushed, the soil dust can be filtered out through the sieving machine, so that the dust generated during crushing is further reduced, the pollution to the crusher can be reduced, and the workload of later-stage cleaning and maintenance is reduced.

The purpose of the invention can be realized by the following technical scheme:

a mining machinery stone crushing device comprises a screening machine, wherein a knocking chamber is arranged at the top of the screening machine, one end of the knocking chamber is movably connected with a feeding channel, a top cover is welded at the top of the knocking chamber, a stone knocking mechanism is arranged in the top cover, the bottom end of the stone knocking mechanism penetrates through the top of the knocking chamber and extends into the knocking chamber, a first driving mechanism is arranged at the top of the stone knocking mechanism, and the first driving mechanism drives the stone knocking mechanism to reciprocate along the direction vertical to the knocking chamber;

the inner cavity of the screening machine is obliquely provided with a filter screen, one end, close to the knocking chamber, of the filter screen is higher than the other end of the filter screen, the screening machine is divided into an upper cavity and a lower cavity through the filter screen, a washing plate is arranged in the upper cavity, the rear end of the washing plate penetrates through the side wall of the screening machine and extends outwards, a side plate is arranged on the outer side wall of the screening machine and at the bottom of the washing plate, a second driving mechanism is arranged on the surface of the side plate, and the second driving mechanism drives the washing plate to reciprocate along the horizontal direction;

a scraping plate is arranged in the lower cavity and is tightly attached to the bottom surface of the lower cavity, rolling wheels are arranged at two ends of the scraping plate, a small motor is fixedly connected to the inner cavity of the scraping plate, the output end of the small motor penetrates through the side wall of the scraping plate to be connected with the rolling wheels, a sliding groove is formed in the inner side wall of the lower cavity, the rolling wheels are located in the sliding groove, and the scraping plate is movably connected with the lower cavity through the rolling wheels;

the bottom fixedly connected with mount of screening machine is provided with vibrating motor in the mount, and vibrating motor hugs closely in the bottom surface of screening machine, and the one end that the striking room was kept away from to the screening machine is provided with the breaker, and the bottom opening of upper chamber is just to the open-top of breaker.

Further, feedstock channel's one end is provided with movable rotating shaft, and feedstock channel rotates with the chamber of knocking through movable rotating shaft to be connected, and feedstock channel's bottom is provided with the fixed plate, and the fixed plate welds in the surface of chamber of knocking, and the fixed surface of fixed plate is connected with the cylinder, and the spacing groove has been seted up to feedstock channel's bottom surface, and spacing inslot swing joint has spacing slider, and spacing slider's bottom welding has fixed rotating shaft, and the expansion end of cylinder is located to fixed rotating shaft cover, and the cylinder rotates with fixed rotating shaft to be connected.

Further, strike stone mechanism including knocking the hammer, the hammer is located the strike chamber, strikes the top fixedly connected with lifter of hammer, and the lifter is kept away from the one end of knocking the hammer and runs through the top surface of strike chamber and be located the top cap, the top fixedly connected with set-square of lifter, and the surface cover of lifter is equipped with spacing spring in the top cap, and the set-square is connected with the strike chamber through spacing spring.

Further, first actuating mechanism includes the lead screw, and the both ends of lead screw rotate with two inside walls of top cap respectively and are connected, the first motor of lateral wall fixedly connected with of top cap, and the lateral wall that the output of first motor runs through the top cap is connected with the lead screw, and the both sides of lead screw all are provided with the slide bar, and the surperficial screw thread of lead screw links to each other has movable nut, and the surface of slide bar is located to movable nut cover, the bottom fixedly connected with drive plate of movable nut.

Furthermore, the top end of the movable nut is fixedly connected with a movable sliding block, the top surface of the inner cavity of the top cover is provided with a movable groove matched with the movable sliding block, and the movable nut is movably connected with the top cover through the movable sliding block.

Furthermore, the washing plate comprises a steel wire brush, the steel wire brush is tightly attached to the surface of the filter screen, a connecting rod is welded at the rear end of the steel wire brush, one end, far away from the steel wire brush, of the connecting rod penetrates through the side wall of the screening machine and extends outwards, a push plate is welded at one end, located on the outer side of the screening machine, of the connecting rod, and the second driving mechanism is connected with the push plate.

Further, the second driving mechanism comprises a cam, the side wall of the cam is tightly attached to the surface of the push plate, the bottom of the side plate is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a rotating rod, and one end, far away from the second motor, of the rotating rod penetrates through the side plate to be connected with the cam.

Further, the surface of one end of the connecting rod, which is located outside the screening machine, is sleeved with a return spring, one end of the return spring is connected with the push plate, and the other end of the return spring is fixedly connected with the outer side wall of the screening machine.

Furthermore, a clockwork spring is fixedly connected in the side wall of the lower cavity, a steel wire rope is wound on the surface of the clockwork spring, and one end of the steel wire rope penetrates through the side wall of the lower cavity and is connected with the scraping plate.

Further, the crusher comprises a casing, a counterattack plate is arranged at the top of an inner cavity of the casing, an adjusting bolt is arranged at the top of the counterattack plate, the counterattack plate is connected with the casing through the adjusting bolt, a rotor is rotatably connected to the bottom of the inner cavity of the casing, and counterattack hammers are distributed on the surface of the rotor in an array mode.

The invention has the beneficial effects that:

1. according to the invention, the knocking chamber is arranged, the whole stone block is placed in the knocking chamber, the stone knocking mechanism firstly knocks the stone block to perform preliminary crushing, and soil and dust attached to the surface of the stone block can be separated, so that manual operation of workers is not required, the working efficiency is improved, the raised dust can be reduced, and the working environment is prevented from being polluted;

2. when the novel crusher is used, after the novel crusher is initially crushed, soil dust can be filtered through the sieving machine, dust generated during crushing is further reduced, pollution to the crusher can be reduced, and workload of later-period cleaning and maintenance is reduced.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

figure 2 is a side view of the screening machine of the present invention;

figure 3 is a schematic view of the internal structure of the screening machine of the present invention;

FIG. 4 is a schematic view of the cylinder of the present invention connected to a feed channel;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

FIG. 6 is a schematic structural diagram of a stone knocking mechanism according to the present invention;

FIG. 7 is a schematic view of a first drive mechanism of the present invention;

FIG. 8 is a schematic view of a scrubbing plate structure of the present invention;

FIG. 9 is a schematic view of a second drive mechanism of the present invention;

FIG. 10 is a cross-sectional view of a scraping plate of the present invention;

fig. 11 is a cross-sectional view of the crusher of the present invention.

In the figure: 1. screening machine; 2. a knock chamber; 3. a feed channel; 30. a cylinder; 31. a limiting groove; 32. a limiting slide block; 33. fixing the rotating shaft; 4. a fixing plate; 5. a top cover; 6. a stone knocking mechanism; 61. knocking hammers; 62. a lifting rod; 63. a set square; 64. a limiting spring; 7. a first drive mechanism; 71. a lead screw; 72. a first motor; 73. a slide bar; 74. a movable nut; 75. a drive plate; 76. moving the slide block; 8. a filter screen; 9. washing the plate; 91. a wire brush; 92. a connecting rod; 93. pushing the plate; 94. a return spring; 10. a side plate; 11. a second drive mechanism; 111. a cam; 112. a rotating rod; 113. a second motor; 12. a scraping plate; 121. a roller; 13. a chute; 14. a clockwork spring; 15. a wire rope; 16. a fixed mount; 17. a vibration motor; 18. a crusher; 181. a housing; 182. adjusting the bolt; 183. a counterattack plate; 184. a rotor; 185. a counterhammer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The utility model provides a mining machinery rubble equipment, as shown in figure 1, including screening machine 1, the top of screening machine 1 is provided with strikes room 2, the one end swing joint of striking room 2 has feedstock channel 3, the top welding of striking room 2 has top cap 5, be provided with in the top cap 5 and strike stone mechanism 6, strike the bottom of stone mechanism 6 and run through the top of striking room 2 and stretch into in striking room 2, the top of striking stone mechanism 6 is provided with a actuating mechanism 7, actuating mechanism 7 drives and strikes stone mechanism 6 and do reciprocating motion along the direction with strike 2 vertically of room, when the stone slides inwards along striking room 2, strike stone mechanism 6 and can strike the stone, carry out preliminary breakage, and break away from the surperficial earth dust of stone.

As shown in fig. 1, 4 and 5, feed channel 3's one end is provided with movable rotating shaft, and feed channel 3 rotates with knocking chamber 2 through movable rotating shaft and is connected, feed channel 3's bottom is provided with fixed plate 4, fixed plate 4 welds in knocking chamber 2's surface, fixed surface of fixed plate 4 is connected with cylinder 30, spacing groove 31 has been seted up to feed channel 3's bottom surface, swing joint has spacing slider 32 in the spacing groove 31, spacing slider 32's bottom welding has fixed rotating shaft 33, and the expansion end of cylinder 30 is located to fixed rotating shaft 33 cover, cylinder 30 rotates with fixed rotating shaft 33 and is connected, place the stone in feed channel 3 back, cylinder 30 upwards promotes feed channel 3, feed channel 3 can upwards overturn, thereby make the stone cunning fall into knocking chamber 2.

As shown in fig. 2 and 3, a filter screen 8 is obliquely arranged in an inner cavity of the screening machine 1, one end, close to the knocking chamber 2, of the filter screen 8 is higher than the other end of the filter screen 8, the screening machine 1 is divided into an upper cavity and a lower cavity through the filter screen 8, a washing plate 9 is arranged in the upper cavity, the rear end of the washing plate 9 penetrates through the side wall of the screening machine 1 and extends outwards, a side plate 10 is arranged on the outer side wall of the screening machine 1 and at the bottom of the washing plate 9, a second driving mechanism 11 is arranged on the surface of the side plate 10, and the second driving mechanism 11 drives the washing plate 9 to reciprocate in the horizontal direction.

As shown in fig. 3, the bottom fixedly connected with mount 16 of screening machine 1, be provided with vibrating motor 17 in the mount 16, and vibrating motor 17 hugs closely in the bottom surface of screening machine 1, the one end that knocking chamber 2 was kept away from to screening machine 1 is provided with breaker 18, and the bottom opening of upper chamber is just to the open-top of breaker 18, after carrying out preliminary breakage, the stone drops in the screening machine, and the stone can slide downwards along the filter screen 8 of slope, and simultaneously, produce the vibration to the stone through vibrating motor 17, filter stone surface adnexed earth dust.

As shown in fig. 3 and 10, be provided with scraping plate 12 in the cavity down, scraping plate 12 hugs closely in the bottom surface of cavity down, scraping plate 12's both ends are provided with gyro wheel 121, the little motor of inner chamber fixedly connected with of scraping plate 12, the lateral wall that little motor's output runs through scraping plate 12 is connected with gyro wheel 121, spout 13 has been seted up to the inside wall of cavity down, gyro wheel 121 is located spout 13, and scraping plate 12 passes through gyro wheel 121 and cavity swing joint down, the earth dust drops in cavity down, the bottom surface of cavity is the slope setting down, be convenient for the earth dust to slide, and simultaneously, scraping plate 12 can clear up the bottom surface, little motor drive gyro wheel 121 rotates, thereby it removes along the bottom surface of cavity down to drive scraping plate 12, will adhere to the earth clearance of cavity bottom down.

The inside fixedly connected with clockwork spring 14 of lateral wall of cavity down, clockwork spring 14's surface winding has wire rope 15, and wire rope 15's one end runs through the lateral wall of cavity down and is connected with scraping board 12, when scraping board 12 removes, can stimulate wire rope 15 to compress clockwork spring 14, after the small motor stops, scraping board 12 again restores to the original state under clockwork spring 14's elasticity effect.

As shown in fig. 6, strike stone mechanism 6 including strike hammer 61, strike hammer 61 is located strike chamber 2, strike hammer 61's top fixedly connected with lifter 62, lifter 62 keeps away from the one end of striking hammer 61 and runs through the top surface of strike chamber 2 and be located top cap 5, lifter 62's top fixedly connected with set-square 63, in top cap 5 and lifter 62's surface cover be equipped with spacing spring 64, and set-square 63 is connected with strike chamber 2 through spacing spring 64.

As shown in fig. 7, the first driving mechanism 7 includes a screw 71, two ends of the screw 71 are respectively rotatably connected to two inner sidewalls of the top cover 5, a first motor 72 is fixedly connected to an outer sidewall of the top cover 5, an output end of the first motor 72 penetrates through a sidewall of the top cover 5 to be connected to the screw 71, two sides of the screw 71 are respectively provided with a sliding rod 73, a surface thread of the screw 71 is connected to a movable nut 74, the movable nut 74 is sleeved on a surface of the sliding rod 73, a driving plate 75 is fixedly connected to a bottom of the movable nut 74, the first motor 72 drives the driving plate 75 to reciprocate, the driving plate 75 pushes the triangular plate 63 to move along a vertical direction along an inclined plane of the triangular plate 63, so that the knocking hammer 61 knocks a stone block.

The top end of the movable nut 74 is fixedly connected with a movable sliding block 76, the top surface of the inner cavity of the top cover 5 is provided with a movable groove matched with the movable sliding block 76, and the movable nut 74 is movably connected with the top cover 5 through the movable sliding block 76.

As shown in fig. 8, the brushing plate 9 includes a wire brush 91, the wire brush 91 is tightly attached to the surface of the filter screen 8, a connecting rod 92 is welded at the rear end of the wire brush 91, one end of the connecting rod 92, which is far away from the wire brush 91, penetrates through the side wall of the screening machine 1 and extends outwards, a push plate 93 is welded at one end of the connecting rod 92, which is located outside the screening machine 1, the second driving mechanism 11 is connected with the push plate 93, and the brushing plate 9 reciprocates along the surface of the filter screen 8, so that the filter holes can be prevented from being blocked by soil.

The surface of one end of the connecting rod 92 located outside the screening machine 1 is sleeved with a return spring 94, one end of the return spring 94 is connected with the push plate 93, and the other end of the return spring 94 is fixedly connected with the outer side wall of the screening machine 1.

As shown in fig. 9, the second driving mechanism 11 includes a cam 111, a side wall of the cam 111 is tightly attached to a surface of the push plate 93, a second motor 113 is fixedly connected to a bottom of the side plate 10, an output end of the second motor 113 is fixedly connected to a rotating rod 112, one end of the rotating rod 112, which is far away from the second motor 113, penetrates through the side plate 10 and is connected to the cam 111, the second motor 113 drives the cam 111 to rotate, when a protruding end of the cam 111 is tightly attached to the push plate 93, the wire brush 91 moves inward, meanwhile, the push plate 93 compresses the return spring 94, and when the protruding end of the cam 111 is far away from the push plate 93, the wire brush 91 performs a restoring motion under an elastic force of the return spring 94, thereby ensuring that the wire brush 91 can perform a reciprocating motion on a surface of the filter screen 8.

As shown in fig. 11, the crusher 18 includes a housing 181, a counterattack plate 183 is disposed at the top of an inner cavity of the housing 181, an adjusting bolt 182 is disposed at the top of the counterattack plate 183, the counterattack plate 183 is connected to the housing 181 via the adjusting bolt 182, a rotor 184 is rotatably connected to the bottom of the inner cavity of the housing 181, and counterattack hammers 185 are distributed on the surface array of the rotor 184.

When the vibrating screen classifier is used, a whole block of stone is placed on the feeding channel 3, the air cylinder 30 is lifted, the feeding channel 3 is pushed to overturn upwards, the stone slides into the knocking chamber 2 along the feeding channel 3, the first motor 72 drives the lead screw 71 to rotate, so as to drive the driving plate 75 to move, the driving plate 75 extrudes the triangular plate 63 along the inclined plane of the triangular plate 63, so that the triangular plate 63 moves along the vertical direction, so as to drive the knocking hammer 61 to knock the stone, primary crushing is carried out, then the stone falls into the screening machine 1, the vibrating motor 17 vibrates the whole screening machine 1, mud dust attached to the surface of the stone is filtered, the second motor 113 is started, the second motor 113 drives the cam 111 to rotate, when the protruding part of the cam 111 is tightly attached to the push plate 93, the steel wire brush 91 moves inwards, and the push plate 93 compresses the return spring 94, when the protruding part of the cam 111 is far away from the push plate 93, the steel wire brush 91 can do recovery movement under the elastic force of the return spring 94, after the soil dust falls into the lower cavity, the small motor drives the roller 121, so that the scraping plate 12 is driven to move along the bottom surface of the lower cavity, the soil dust is swept out, meanwhile, the scraping plate 12 compresses the clockwork spring 14 through the tensile steel wire rope 15, and after the small motor stops, the scraping plate 12 can recover under the elastic force of the clockwork spring 14; the filtered stone falls down into the crusher 18 and is crushed into the desired size by the crusher 18.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The mining machinery stone crushing equipment comprises a screening machine (1) and is characterized in that a knocking chamber (2) is arranged at the top of the screening machine (1), a feeding channel (3) is movably connected to one end of the knocking chamber (2), a top cover (5) is welded to the top of the knocking chamber (2), a stone knocking mechanism (6) is arranged in the top cover (5), the bottom end of the stone knocking mechanism (6) penetrates through the top of the knocking chamber (2) and extends into the knocking chamber (2), a first driving mechanism (7) is arranged at the top of the stone knocking mechanism (6), and the first driving mechanism (7) drives the stone knocking mechanism (6) to do reciprocating motion along the direction perpendicular to the knocking chamber (2);

a filter screen (8) is obliquely arranged in an inner cavity of the screening machine (1), one end, close to the knocking chamber (2), of the filter screen (8) is higher than the other end of the filter screen, the screening machine (1) is divided into an upper cavity and a lower cavity through the filter screen (8), a washing plate (9) is arranged in the upper cavity, the rear end of the washing plate (9) penetrates through the side wall of the screening machine (1) and extends outwards, a side plate (10) is arranged on the outer side wall of the screening machine (1) and at the bottom of the washing plate (9), a second driving mechanism (11) is arranged on the surface of the side plate (10), and the washing plate (9) is driven by the second driving mechanism (11) to reciprocate along the horizontal direction;

a scraping plate (12) is arranged in the lower cavity, the scraping plate (12) is tightly attached to the bottom surface of the lower cavity, rolling wheels (121) are arranged at two ends of the scraping plate (12), a small motor is fixedly connected to an inner cavity of the scraping plate (12), an output end of the small motor penetrates through the side wall of the scraping plate (12) to be connected with the rolling wheels (121), a sliding groove (13) is formed in the inner side wall of the lower cavity, the rolling wheels (121) are located in the sliding groove (13), and the scraping plate (12) is movably connected with the lower cavity through the rolling wheels (121);

the bottom fixedly connected with mount (16) of screening machine (1), be provided with vibrating motor (17) in mount (16), and vibrating motor (17) hug closely in the bottom surface of screening machine (1), the one end that knocking chamber (2) was kept away from in screening machine (1) is provided with breaker (18), and the bottom opening of upper chamber is just to the open-top of breaker (18).

2. The mining machinery stone crushing device as claimed in claim 1, wherein a movable rotating shaft is arranged at one end of the feeding channel (3), the feeding channel (3) is rotatably connected with the knocking chamber (2) through the movable rotating shaft, a fixing plate (4) is arranged at the bottom of the feeding channel (3), the fixing plate (4) is welded on the surface of the knocking chamber (2), a cylinder (30) is fixedly connected to the surface of the fixing plate (4), a limiting groove (31) is formed in the bottom surface of the feeding channel (3), a limiting slide block (32) is movably connected in the limiting groove (31), a fixed rotating shaft (33) is welded at the bottom of the limiting slide block (32), the fixed rotating shaft (33) is sleeved at the movable end of the cylinder (30), and the cylinder (30) is rotatably connected with the fixed rotating shaft (33).

3. The mining machinery stone crushing device as recited in claim 1, wherein the stone knocking mechanism (6) comprises a knocking hammer (61), the knocking hammer (61) is located in the knocking chamber (2), a lifting rod (62) is fixedly connected to the top of the knocking hammer (61), one end, far away from the knocking hammer (61), of the lifting rod (62) penetrates through the top surface of the knocking chamber (2) and is located in the top cover (5), a triangular plate (63) is fixedly connected to the top end of the lifting rod (62), a limiting spring (64) is sleeved on the surface, in the top cover (5), of the lifting rod (62), and the triangular plate (63) is connected with the knocking chamber (2) through the limiting spring (64).

4. The mining machinery stone crushing device as claimed in claim 1, wherein the first driving mechanism (7) comprises a lead screw (71), two ends of the lead screw (71) are respectively rotatably connected with two inner side walls of the top cover (5), a first motor (72) is fixedly connected to the outer side wall of the top cover (5), an output end of the first motor (72) penetrates through the side wall of the top cover (5) to be connected with the lead screw (71), sliding rods (73) are arranged on two sides of the lead screw (71), a movable nut (74) is connected to the surface of the lead screw (71) through threads, the movable nut (74) is sleeved on the surface of the sliding rod (73), and a driving plate (75) is fixedly connected to the bottom of the movable nut (74).

5. The mining machinery stone breaking equipment as claimed in claim 4, wherein a movable sliding block (76) is fixedly connected to the top end of the movable nut (74), a movable groove matched with the movable sliding block (76) is formed in the top surface of the inner cavity of the top cover (5), and the movable nut (74) is movably connected with the top cover (5) through the movable sliding block (76).

6. The mining machinery stone crushing device as claimed in claim 1, wherein the washing plate (9) comprises a steel wire brush (91), the steel wire brush (91) is tightly attached to the surface of the filter screen (8), a connecting rod (92) is welded at the rear end of the steel wire brush (91), one end, away from the steel wire brush (91), of the connecting rod (92) penetrates through the side wall of the screening machine (1) and extends outwards, a push plate (93) is welded at one end, located on the outer side of the screening machine (1), of the connecting rod (92), and the second driving mechanism (11) is connected with the push plate (93).

7. The mining machine stone crushing apparatus as claimed in claim 6, wherein the second driving mechanism (11) comprises a cam (111), the side wall of the cam (111) is tightly attached to the surface of the push plate (93), a second motor (113) is fixedly connected to the bottom of the side plate (10), a rotating rod (112) is fixedly connected to the output end of the second motor (113), and one end, far away from the second motor (113), of the rotating rod (112) penetrates through the side plate (10) to be connected with the cam (111).

8. The mining machinery stone breaking device as claimed in claim 7, characterized in that a return spring (94) is sleeved on the surface of one end of the connecting rod (92) located outside the screening machine (1), one end of the return spring (94) is connected with the push plate (93), and the other end of the return spring (94) is fixedly connected with the outer side wall of the screening machine (1).

9. The mining machinery stone breaking equipment as claimed in claim 1, wherein a clockwork spring (14) is fixedly connected in the side wall of the lower cavity, a steel wire rope (15) is wound on the surface of the clockwork spring (14), and one end of the steel wire rope (15) penetrates through the side wall of the lower cavity and is connected with the scraping plate (12).

10. The mining machinery stone crushing device as claimed in claim 1, wherein the crusher (18) comprises a machine shell (181), a counterattack plate (183) is arranged at the top of an inner cavity of the machine shell (181), an adjusting bolt (182) is arranged at the top of the counterattack plate (183), the counterattack plate (183) is connected with the machine shell (181) through the adjusting bolt (182), a rotor (184) is rotatably connected to the bottom of the inner cavity of the machine shell (181), and counterattack hammers (185) are distributed on the surface of the rotor (184) in an array manner.