Crusher for coal mine

Abstract

The invention relates to the technical field of stone crushing, in particular to a coal mine crusher which comprises a collecting frame, a screening unit is placed on the upper portion of the collecting frame, and the screening unit is used for screening crushed ore, so that the ore meeting the specification falls and is collected; according to the ore crushing device, by arranging the crushing unit, two different crushing modes of rotating type crushing and pressing type crushing on ore can be met, the two crushing modes of rotating type crushing and pressing type crushing are combined, ore crushing can be more thorough, and due to the fact that the concave box is arranged in a sinking mode, the crushing efficiency is improved. The ore is also subjected to sinking type crushing in the concave box, dust generated by ore crushing can be effectively restrained, meanwhile, splashed stone particles during crushing can be resisted, the arrangement of the placing unit can integrally drive the ore and the crushing unit to generate a reverse impact force, and the crushing efficiency is improved. And the ore crushing efficiency and the crushing quality are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stone crushing, and specifically to a coal mine crusher. Background Art

[0002] A crusher is a device that uses a certain mechanism to break large pieces of material into small pieces by one or several force application methods;

[0003] There are many types of crushers and their application ranges are also extensive. Among them, crushing the ore during coal mining is one of them.

[0004] The prior art discloses a Chinese patent with the application number CN202410411717.9, a new type of double-roll mine crusher. After pouring the ore stones to be crushed into the housing, the stones can be fed into the gap between the two crushing rolls. Under the action of the reciprocating mechanism, the two concave mounting frames can drive the gap between the two crushing rolls to expand, so as to improve the efficiency of feeding the stones into the area between the two crushing rolls.

[0005] Although the above device can achieve the crushing of ore, there are still some defects in use:

[0006] 1. The above device only uses the roll pressing rotation for crushing. Small stones will be left between the two crushing rolls, and at the same time, it will also cause the splashing of crushed stones during crushing and the problem of crushed stones being missed during crushing. Eventually, the crushing is not sufficient, and a large amount of dust is easily generated during ore crushing. If not suppressed, it will cause a large amount of pollution to the working environment;

[0007] 2. When crushing the crushed stones, the cutter head cannot be cleaned. After long-term use, small crushed stones and dust during crushing are easily attached to the outside of the cutter head, causing the cutter head to get stuck, thereby affecting the crushing operation. Summary of the Invention

[0008] The purpose of the present invention is to provide a coal mine crusher to solve the problems proposed in the above background art, that is, by combining the two methods of roll pressing and pressing crushing, the ore is fully crushed while suppressing dust, and the cutter head is quickly cleaned to avoid the problem of cutter head jamming.

[0009] The purpose of the present invention can be achieved by the following technical solutions:

[0010] A crusher for coal mines, comprising a collection frame. A screening unit is placed on the upper part of the collection frame. The screening unit is used to screen the ore that has been crushed to make the ore that meets the specifications fall and be collected. Above the screening unit, there are two pressing frames arranged symmetrically in a U-shaped structure. The upper end faces of the two pressing frames are detachably installed with a placement unit. The placement unit is used to centrally place the ore during crushing for crushing treatment. Above the placement unit, there is a crushing unit for pressing and crushing and roller pressing the ore.

[0011] The screening unit includes two symmetrically arranged outer frames. Rectangular grooves are opened on the two outer frames. A return-shaped frame located in the middle of the two outer frames is slidably installed in the rectangular grooves together. The outer frames are arranged in an inverted L shape. A spring is jointly installed between one side of the outer frame and the return-shaped frame. On the side of the two outer frames away from the spring, there is a shaft rod rotatably connected to the outer frames through a motor. A cam in contact with the return-shaped frame is fixedly installed in the middle of the shaft rod. A tipping plate is rotatably installed in the middle of the return-shaped frame. A placement opening is opened on one side of the return-shaped frame. A sieve plate located above the tipping plate is arranged in the placement groove.

[0012] On both sides of the inner wall of the outer frame, there are grooves. On one side of the groove, there is a clamping groove opened on the tipping plate. A clamping plate is slidably installed in the groove. When the clamping plate is located inside the clamping groove, it is used to fix the tipping plate. A baffle is slidably installed on one side of the return-shaped frame. A plurality of adjustment grooves are opened on the return-shaped frame. An inner plate fixed to the clamping plate is slidably installed in the adjustment grooves. A spring is jointly connected between the inner plate and the return-shaped frame.

[0013] The placement unit includes a concave box. Hollow grooves are opened on both sides of the inner cavity of the concave box. On both outer sides of the concave box, there are fixed ear plates. A threaded rod is rotatably installed on the ear plates through a motor. Above the ear plates, there is an outer groove opened on the outer wall of the concave box. Inner grooves communicating with the hollow grooves are opened on both sides of the inner cavity of the concave box. A lifting frame slidably connected to the outer groove is threadedly rotatably installed on the threaded rod. A spring located in the hollow groove is fixedly installed on the lifting frame. An impact frame is slidably installed up and down in the inner groove. One end of the spring away from the lifting frame is fixedly connected to the impact frame. A placement groove is opened on the outside of the concave box. A receiving plate clamped with the two impact frames is placed in the placement groove.

[0014] Above the placement groove, there is a toothed plate slidably connected to the left and right of the outside of the concave box. A cleaning brush is fixedly installed in the middle of the lower end face of the toothed plate. Above the toothed plate, there is a mounting plate fixed to the concave box. A driving wheel is rotatably installed on the lower end face of the mounting plate through a motor. The driving wheel meshes with the toothed plate.

[0015] The crushing unit includes two symmetrically arranged fixing frames. At the lower end face of the fixing frames, two symmetrically arranged cylinders are fixedly installed. Between the two cylinders, a guide plate is commonly installed. At the lower end face of the guide plate, a telescopic plate is slidably installed through an electric slider. At the lower end face of the telescopic plate, a rectangular plate is fixedly installed. Between the two rectangular plates, two symmetrically arranged fixed rods are rotatably installed through a motor. On both sides of the fixed rods, symmetrically arranged turning plates are fixedly installed. On one side of the turning plate, a crushing plate is installed through a spring.

[0016] On both sides of the rectangular plate, symmetrically arranged side grooves are formed. In the side grooves, moving blocks are slidably installed. On the moving blocks, towing plates are rotatably installed. On the side of the towing plate away from the moving block, an inner rod is fixedly installed. In the middle of the turning plate, a through groove is formed. The inner rod is located in the through groove.

[0017] In the middle of the rectangular plate, an electric push rod is fixedly installed. On the side where the two turning plates are close to each other, convex shafts are fixedly installed. The telescopic end of the electric push rod is rotatably installed with a fixing sleeve for externally sleeving the convex shaft.

[0018] On one side of the rectangular plate, a plurality of equally spaced gears are rotatably installed. The gear at the exact center is rotationally connected to the rectangular plate through a motor. On one side of the gear, a rotating rod that rotates with the other rectangular plate is fixedly installed. On the outside of the rotating rod, a rotating roller is fixedly installed. On the outside of the rotating roller, a plurality of equally spaced crushing knives are fixedly installed.

[0019] On both sides of the rotating roller, rotating rings are rotatably installed through electric sliders. On the outside of the rotating rings, a plurality of circumferentially arranged pushing plates are hinged. At one end of the pushing plate, a connecting shaft is hinged. Between the left and right connecting shafts, a cleaning arc plate is commonly installed. One side of the cleaning arc plate is slidably connected to the rotating roller. On the cleaning arc plate, a plurality of through holes sleeving the crushing knives are provided. Between every two adjacent cleaning arc plates, a shielding plate is commonly installed.

[0020] Advantages of the present invention:

[0021] 1. The present invention can meet the two different crushing modes of ore rotation crushing and pressing crushing through the setting of the crushing unit, and the ore can be crushed more thoroughly by combining the two crushing modes of rotation crushing and pressing crushing. The setting of the placement unit can make the ore in the concave box sink during crushing, so that the ore is also in the sinking crushing state in the concave box, which can effectively suppress the dust generated by the ore crushing and resist the stone particles splashed during crushing. The setting of the placement unit can also make the overall crushing of the ore by the crushing unit. It drives the ore and the crushing unit to generate a reverse impact force, so that the ore is not only subjected to the single crushing force of the crushing unit during crushing, thereby effectively promoting the crushing efficiency and quality of the ore. The setting of the screening unit can spread the crushed ore back and forth, so that the ore that meets the requirements can fall quickly. At the same time, the screen plate is equipped with a magnetic suction, which can adsorb metal impurities in the ore. When the screen plate is taken out, the ore that does not meet the standards can be poured out for secondary crushing, and the metal particles adsorbed on the screen plate can be scraped off to achieve rapid separation.

[0022] 2. The present invention can fill the gap between the dumping plate and the return frame by positioning the card plate in the card slot, so that the ore collected on the dumping plate can be turned over and dropped later. At the same time, when the return frame moves, the ore can be prevented from falling outside the collection frame through the gap between the dumping plate and the return frame. When the ore is uniformly dropped to the collection frame, the rotation of the shaft rod is cancelled, and the return frame is aligned with the collection frame. Then the built-in plate is moved to allow the card plate to cancel the blocking of the dumping plate, and then the dumping plate is controlled to flip, so that the ore on the dumping plate that has been crushed and meets the particle size can be placed in the collection frame.

[0023] 3. The present invention has a concave setting in the middle of the concave box, so that the ore introduced into the concave box for crushing can be crushed in a sinking environment, which can effectively avoid splashing and dust spreading during ore crushing. The motor is turned on to drive the threaded rod to rotate. When the threaded rod rotates, the lifting of the lifting frame can drive the lifting of the impact frame, so that the position of the receiving plate in the concave box can be adjusted. At the same time, the lifting of the lifting frame can compress the spring, so that the elasticity applied by the spring to the impact frame and the receiving plate can be regulated. By regulating the elasticity of the spring, the receiving plate can impact the crushing unit in the opposite direction when the crushing unit moves up, so that the ore on the receiving plate can contact the crushing unit again, thereby realizing multiple crushing.

[0024] 4. When the cylinder pushes forward, it drives the rectangular plate to move downward as a whole to contact the ore. When pressing and crushing the ore, the turning plate is located below the rotating roller. At this time, the crushing plate on the turning plate presses and crushes the ore. And the electric slider is turned on to drive the telescopic plate to slide left and right on the guide plate. The rectangular plate can drive the crushing plate to move and crush when pressing downward in the concave box, thereby increasing the crushing range of the ore. When performing roller-type crushing on the ore, the electric push rod is turned on to push forward, canceling the fixation of the two convex shafts by the fixed sleeve. Subsequently, the motor is turned on to drive the fixed rod to rotate. It should be noted that here the two fixed rods rotate away from each other until the turning plate rotates above the rotating roller. By having the two turning plates above the rotating roller, when the rotating roller drives the crushing knife to rotate to perform rolling crushing on the ore, it can effectively cover and resist the dust generated during crushing, thereby effectively suppressing the dust. The motor is turned on to drive the gear at the center to rotate. Since the multiple gears are meshed with each other, the multiple gears rotate synchronously at this time. When the gears rotate, they drive the rotating roller and the crushing knife to rotate synchronously, thereby realizing the crushing of the ore. And because the rotation directions of every two adjacent gears are set in the opposite direction, when the rotating roller drives the crushing knife to perform rolling crushing on the ore, the ore that undergoes sliding displacement during crushing can always be between any two rotating rollers, effectively avoiding the situation of insufficient crushing caused by a single rotation direction.

[0025] 5. In the present invention, when the electric slider is turned on, it drives the rotating ring to rotate. When the rotating ring rotates, it drives the multiple cleaning arc plates to approach or move away from each other through the pushing plate, thereby being able to quickly clean the crushing knife, avoiding the adhesion of ore and dust on the outside of the crushing knife from affecting the crushing of the ore. By moving the cleaning arc plate on the crushing knife, it can also adjust the crushing depth of the crushing knife when crushing the ore. The shielding plate can resist the crushed stones, preventing the ore from splashing into the cleaning arc plate during crushing and causing jamming, thereby affecting the cleaning of the crushing knife by the immovable cleaning arc plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a partial cross-sectional view schematic diagram between the collection box and the screening unit of the present invention;

[0029] Figure 3It is a schematic diagram of the partial sectional view of the screening unit of the present invention;

[0030] Figure 4 It is a schematic diagram of the placement unit structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the front sectional view of the placement unit of the present invention;

[0032] Figure 6 It is a schematic diagram of the crushing unit structure of the present invention;

[0033] Figure 7 It is a schematic diagram of the partial structure when the crushing unit of the present invention presses and crushes the ore;

[0034] Figure 8 It is a schematic diagram of the partial structure when the crushing unit of the present invention rolls and crushes the ore;

[0035] Figure 9 It is a schematic diagram of the external structure of the rotating roller of the present invention;

[0036] Figure 10 It is a schematic diagram of the side sectional view between the cleaning arc plate and the rotating roller of the present invention;

[0037] Figure 11 It is a schematic diagram of the shielding plate structure of the present invention.

[0038] The reference numerals in the figure are as follows:

[0039] 1. Collection box; 2. Screening unit; 21. External frame; 211. Shaft rod; 212. Cam; 22. Return-shaped frame; 221. Groove; 222. Clamping plate; 223. Regulation groove; 224. Built-in plate; 23. Baffle; 24. Sieve plate; 25. Dumping plate; 3. Placement unit; 31. Concave box; 32. Hollow groove; 33. Ear plate; 34. Threaded rod; 35. External groove; 36. Lifting frame; 37. Internal groove; 38. Impact frame; 39. Placement groove; 390. Bearing plate; 391. Tooth plate; 392. Cleaning brush; 393. Mounting plate; 394. Driving wheel; 4. Crushing unit; 40. Fixed frame; 41. Cylinder; 42. Guide plate; 43. Telescopic plate; 44. Rectangular plate; 441. Fixed rod; 442. Side groove; 443. Moving block; 444. Traction plate; 445. Built-in rod; 45. Flipping plate; 451. Crushing plate; 452. Through groove; 453. Convex shaft; 454. Electric push rod; 455. Fixed sleeve; 46. Gear; 47. Rotating rod; 48. Rotating roller; 481. Crushing knife; 49. Rotating ring; 491. Pushing plate; 492. Coupling shaft; 493. Cleaning arc plate; 494. Shielding plate. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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, rather than all 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.

[0041] As shown in the attached Figures 1-11 figure, a coal mine crusher includes a collection box 1. A screening unit 2 is placed on the upper part of the collection box 1. The screening unit 2 is used to screen the ore after being crushed so that the ore meeting the specifications falls for collection. Above the screening unit 2, there are two pressing frames arranged symmetrically in a U-shaped structure. The upper end faces of the two pressing frames are detachably installed with a placement unit 3. The placement unit 3 is used to centrally place the ore for crushing treatment when the ore is being crushed. Above the placement unit 3, there is a crushing unit 4 for pressing and crushing the ore and roller pressing the ore.

[0042] The setting of the crushing unit 4 can meet two different crushing methods, namely rotary crushing and pressing crushing of the ore. And through the combination of the rotary crushing and pressing crushing methods, the ore can be crushed more thoroughly. Through the setting of the placement unit 3, when the ore is being crushed, since the concave box 31 is set in a sunken manner, the ore is also in a sunken crushing state in the concave box 31, which can effectively suppress the dust generated by the ore crushing and at the same time resist the flying stone particles during crushing. The setting of the placement unit 3 can also drive the ore and the crushing unit 4 to generate a reverse impact force when the crushing unit 4 crushes the ore, so that when the ore is being crushed, it is not only subjected to the single crushing force of the crushing unit 4, thereby effectively promoting the crushing efficiency and quality of the ore. The setting of the screening unit 2 can spread the crushed ore reciprocally, so that the ore meeting the requirements can fall quickly. At the same time, there is a magnetic attraction in the sieve plate 24, which can adsorb the metal impurities in the ore. When the sieve plate 24 is taken out, the ore that does not meet the standard can be poured out for secondary crushing, and the metal particles adsorbed on the sieve plate 24 can be quickly separated by scraping.

[0043] As shown in the attached Figure 2 、 3As shown, the screening unit 2 includes two symmetrically arranged external frames 21, rectangular grooves are provided on the two external frames 21, and a return frame 22 located in the middle of the two external frames 21 is slidably installed in the rectangular grooves. The external frames 21 are arranged in an inverted L shape, and a spring is installed between one side of the external frame 21 and the return frame 22. The two external frames 21 are provided with a shaft rod 211 that is rotatably connected to the external frames 21 through a motor on the side away from the spring, a cam 212 that contacts the return frame 22 is fixedly installed in the middle of the shaft rod 211, a tipping plate 25 is rotatably installed in the middle of the return frame 22, a placement opening is provided on one side of the return frame 22, and a sieve plate 24 located above the tipping plate 25 is provided in the placement groove 39.

[0044] The crushed ore falls onto the screen plate 24, and then the motor is turned on to drive the shaft 211 to rotate. When the shaft 211 rotates, the cam 212 is synchronously driven to rotate. When the cam 212 rotates, it squeezes the return frame 22. At this time, the return frame 22 is squeezed and moves toward the side away from the cam 212, compressing the spring on the external frame 21. When the cam 212 cancels the resistance to the return frame 22, the return frame 22 cancels the squeezing of the spring, and under the action of the spring, the return frame 22 is pushed to move toward one side of the cam 212, so that the cam 212 and the spring cooperate with each other to drive the return frame 22. The outer frame 21 slides back and forth, and the crushed ore in the return frame 22 is spread on the sieve plate 24 at this time, and the ore that meets the specifications falls onto the dumping plate 25 through the sieve plate 24. At the same time, as the ore is repeatedly spread on the sieve plate 24, the metal particles of the ore during crushing are magnetically attracted to the sieve plate 24. The sieve plate 24 is then moved and taken out, and the large particles of ore that have not fallen on it are dumped for secondary crushing, and the metal particles magnetically attracted on the sieve plate 24 are scraped off by the outside, so that the metal particles during ore crushing can be effectively collected, and the ore that meets the standards can be collected in a centralized manner.

[0045] Grooves 221 are provided on both sides of the inner wall of the external frame 21, and a card slot is provided on one side of the groove 221 and is provided on the tipping plate 25. A card plate 222 is slidably installed in the groove 221. When the card plate 222 is located in the card slot, it is used to fix the tipping plate 25. A baffle 23 is slidably installed on one side of the return frame 22. A plurality of regulating grooves 223 are provided on the return frame 22. An internal plate 224 fixed with the card plate 222 is slidably installed in the regulating groove 223, and a spring is commonly connected between the internal plate 224 and the return frame 22.

[0046] By having the pallet 222 located within the card slot, it is possible to fill the gap between the tipping plate 25 and the U-shaped frame 22, facilitating the subsequent flipping and dropping of the ore collected on the tipping plate 25. At the same time, it can also prevent the ore from falling outside the collection frame 1 through the gap between the tipping plate 25 and the U-shaped frame 22 when the U-shaped frame 22 moves. When the ore is uniformly dropped into the collection frame 1, the rotation of the shaft rod 211 is cancelled at this time, and the U-shaped frame 22 is aligned with the collection frame 1. Subsequently, the built-in plate 224 is moved to cancel the jamming of the pallet 222 on the tipping plate 25, and then the tipping plate 25 is controlled to flip, enabling the broken ore on the tipping plate 25 that meets the particle size requirements to be dropped into the collection frame 1.

[0047] As shown in the Figure 4 attachment 5 As shown, the placement unit 3 includes a concave box 31. Both sides of the inner cavity of the concave box 31 are provided with hollow grooves 32. Both sides of the outside of the concave box 31 are fixedly installed with ear plates 33. A threaded rod 34 is rotatably installed on the ear plates 33 through a motor. An external groove 35 is provided on the outer wall of the concave box 31 above the ear plates 33. Both sides of the inner cavity of the concave box 31 are provided with internal grooves 37 communicating with the hollow grooves 32. A lifting frame 36 that is slidably connected to the external groove 35 is rotatably installed on the threaded rod 34 in a threaded manner. A spring located within the hollow groove 32 is fixedly installed on the lifting frame 36. An impact frame 38 is slidably installed up and down within the internal groove 37. One end of the spring away from the lifting frame 36 is fixedly connected to the impact frame 38. A placement groove 39 is provided on the outside of the concave box 31. A receiving plate 390 that is snap-connected to the two impact frames 38 is placed within the placement groove 39.

[0048] The middle part of the concave box 31 is concave-shaped, enabling the ore introduced into the concave box 31 for crushing to be crushed in a sunken environment, effectively preventing the splashing of the ore during crushing and the spread of dust everywhere. By starting the motor to drive the rotation of the threaded rod 34, when the threaded rod 34 rotates, it can drive the lifting of the impact frame 38 through the rising of the lifting frame 36, enabling the position of the receiving plate 390 within the concave box 31 to be adjusted. At the same time, the lifting of the lifting frame 36 can compress the spring, thereby regulating the elasticity exerted by the spring on the impact frame 38 and the receiving plate 390. By regulating the elasticity of the spring, when the receiving plate 390 moves upward on the crushing unit 4, it can impact the crushing unit 4 in the reverse direction, enabling the ore on the receiving plate 390 to come into contact with the crushing unit 4 again, thereby achieving multiple crushing.

[0049] Above the placement groove 39, a toothed plate 391 that is slidably connected to the left and right of the outside of the concave box 31 is provided. A cleaning brush 392 is fixedly installed in the middle of the lower end surface of the toothed plate 391. Above the toothed plate 391, a mounting plate 393 that is fixed to the concave box 31 is provided. A driving wheel 394 is rotatably installed on the lower end surface of the mounting plate 393 through a motor. The driving wheel 394 meshes with the toothed plate 391.

[0050] When the broken ore on the receiving plate 390 falls, by manually pulling the receiving plate 390 in the placement groove 39, a gap is generated between the receiving plate 390 and the concave box 31 at this time. At this time, the ore particles on the receiving plate 390 fall off until the receiving plate 390 is completely removed from the placement groove 39 and the sand and gravel in the receiving plate 390 have fallen out. And when the receiving plate 390 moves, the part that moves out of the placement groove 39 slides on the X-axis and continuously contacts the cleaning brush 392. At this time, the motor is turned on to drive the driving wheel 394 to rotate. When the driving wheel 394 rotates, it drives the toothed plate 391 to move through meshing. When the toothed plate 391 moves, it drives the cleaning brush 392 to move on the Y-axis, thereby cleaning the surface of the receiving plate 390 and completing the cleaning of the receiving plate 390.

[0051] As shown in Figure 6 、 7 、8, the crushing unit 4 includes two symmetrically arranged fixing frames 40. The lower end surfaces of the fixing frames 40 are fixedly installed with two symmetrically arranged cylinders 41. A guide plate 42 is installed between the two cylinders 41. The lower end surface of the guide plate 42 is slidably installed with a telescopic plate 43 through an electric slider. The lower end surface of the telescopic plate 43 is fixedly installed with a rectangular plate 44. Two symmetrically arranged fixing rods 441 are rotatably installed between the two rectangular plates 44 through a motor. Symmetrically arranged turning plates 45 are fixedly installed on the fixing rods 441 on both sides. A crushing plate 451 is installed on one side of the turning plate 45 through a spring.

[0052] When crushing the ore in the concave box 31, the air cylinder 41 is opened and pushed forward. When the air cylinder 41 is pushed forward, it drives the overall downward movement of the rectangular plate 44 to contact the ore. When pressing and crushing the ore, the turning plate 45 is located below the rotating roller 48. At this time, the crushing plate 451 on the turning plate 45 presses and crushes the ore, and the electric slider is opened to drive the telescopic plate 43 to slide left and right on the guide plate 42. The rectangular plate 44 can drive the crushing plate 451 to move and crush when pressing down in the concave box 31, thereby increasing the crushing range of the ore. When roller-pressing and crushing the ore, the electric push rod 454 is opened and pushed forward to cancel the fixation of the two convex shafts 453 by the fixed sleeve 455. Subsequently, the motor is started to drive the fixed rod 441 to rotate. It should be noted that here the two fixed rods 441 rotate away from each other until the turning plate 45 rotates above the rotating roller 48. By having the two turning plates 45 above the rotating roller 48, when the rotating roller 48 drives the crushing knife 481 to rotate to crush the ore in a rolling manner, it can effectively cover and resist the dust generated during crushing, thereby effectively suppressing the dust. The motor is started to drive the gear 46 at the center to rotate. Since the multiple gears 46 are meshed with each other, the multiple gears 46 rotate synchronously at this time. When the gear 46 rotates, it synchronously drives the rotating roller 48 and the crushing knife 481 to rotate, thereby realizing the crushing of the ore. And because the rotation directions of every two adjacent gears 46 are set to be opposite, when the rotating roller 48 drives the crushing knife 481 to crush the ore in a rolling manner, the ore that undergoes sliding displacement during crushing can always be between any two rotating rollers 48, effectively avoiding the situation of insufficient crushing caused by a single rotation direction.

[0053] Symmetrically arranged side grooves 442 are provided on both sides of the rectangular plate 44. A moving block 443 is slidably installed in the side groove 442. A traction plate 444 is rotatably installed on the moving block 443. An internal rod 445 is fixedly installed on the side of the traction plate 444 away from the moving block 443. A through groove 452 is provided in the middle of the turning plate 45, and the internal rod 445 is located in the through groove 452.

[0054] An electric push rod 454 is fixedly installed in the middle of the rectangular plate 44. Convex shafts 453 are fixedly installed on the sides of the two turning plates 45 close to each other. The telescopic end of the electric push rod 454 is rotatably installed with a fixed sleeve 455 for externally sleeving the convex shaft 453.

[0055] As attached Figure 9 、 10, as shown in Fig. 11, a plurality of gears 46 arranged at equal intervals are rotatably installed on one side of the rectangular plate 44. The gear 46 at the center is rotatably connected to the rectangular plate 44 through a motor. A rotating rod 47 that rotates with the other side of the rectangular plate 44 is fixedly installed on one side of the gear 46. A rotating roller 48 is fixedly installed on the outside of the rotating rod 47. A plurality of crushing knives 481 arranged at equal intervals are fixedly installed on the outside of the rotating roller 48.

[0056] Rotating rings 49 are rotatably installed on both sides of the rotating roller 48 through electric sliders. A plurality of push plates 491 arranged circumferentially are hinged to the outside of the rotating rings 49. A connecting shaft 492 is hinged to one end of each push plate 491. A cleaning arc plate 493 is jointly installed between the left and right connecting shafts 492. One side of the cleaning arc plate 493 is slidably connected to the rotating roller 48. A plurality of through holes sleeved on the crushing knives 481 are provided on the cleaning arc plate 493. A shielding plate 494 is jointly installed between every two adjacent cleaning arc plates 493.

[0057] Starting the electric slider drives the rotating ring 49 to rotate. When the rotating ring 49 rotates, it drives the plurality of cleaning arc plates 493 to approach or move away from each other through the push plates 491, so as to quickly clean the crushing knives 481, avoiding the adhesion of ore and dust on the outside of the crushing knives 481 and affecting the crushing of ore. By moving the cleaning arc plate 493 on the crushing knives 481, the crushing depth of the crushing knives 481 during ore crushing can also be adjusted. The shielding plate 494 can block the crushed stones, preventing the ore from splashing into the cleaning arc plate 493 during crushing and causing jamming, which in turn affects the movement of the cleaning arc plate 493 and the cleaning of the crushing knives 481.

[0058] During use, the ore to be crushed is poured into the concave box 31 in advance. When crushing the ore in the concave box 31, the air cylinder 41 is activated to push forward. When the air cylinder 41 pushes forward, it drives the entire rectangular plate 44 to move downward to contact the ore. When pressing and crushing the ore, the turning plate 45 is located below the rotating roller 48. At this time, the crushing plate 451 on the turning plate 45 presses and crushes the ore. And the electric slider is activated to drive the telescopic plate 43 to slide left and right on the guide plate 42. The rectangular plate 44 can drive the crushing plate 451 to move and crush when pressing downward in the concave box 31, thereby increasing the crushing range of the ore. When performing roller pressing crushing on the ore, the electric push rod 454 is activated to push forward, canceling the fixation of the two convex shafts 453 by the fixed sleeve 455. Subsequently, the motor is activated to drive the fixed rod 441 to rotate. It should be noted that here the two fixed rods 441 rotate away from each other until the turning plate 45 rotates above the rotating roller 48. By having the two turning plates 45 above the rotating roller 48, when the rotating roller 48 drives the crushing knife 481 to rotate to perform rolling crushing on the ore, it can effectively cover and resist the dust generated during crushing, thereby effectively suppressing the dust. The motor is activated to drive the gear 46 at the center to rotate. Since the multiple gears 46 are meshed with each other, the multiple gears 46 rotate synchronously at this time. By the synchronous rotation of the gear 46, the rotating roller 48 and the crushing knife 481 are driven to rotate, thereby realizing the crushing of the ore. And because the rotation directions of every two adjacent gears 46 are set to be opposite, when the rotating roller 48 drives the crushing knife 481 to perform rolling crushing on the ore, the ore that undergoes sliding displacement during crushing can always be between any two rotating rollers 48, effectively avoiding the situation of insufficient crushing caused by a single rotation direction;

[0059] The middle part of the concave box 31 is concave, which enables the ore to be broken in the sunken environment when it is imported into the concave box 31, effectively avoiding the splashing of the ore during crushing and the diffusion of dust everywhere. Moreover, when the motor is turned on, it drives the threaded rod 34 to rotate. When the threaded rod 34 rotates, it can drive the lifting of the impact bearing frame 38 through the rising of the lifting frame 36, and can adjust the position of the receiving plate 390 in the concave box 31. At the same time, through the lifting of the lifting frame 36, the spring can be compressed, so that the elasticity exerted by the spring on the impact frame 38 and the receiving plate 390 can be regulated. By regulating the elasticity of the spring, when the receiving plate 390 moves upward on the crushing unit 4, it can impact the crushing unit 4 in the reverse direction, so that the ore on the receiving plate 390 contacts the crushing unit 4 again, thus realizing multiple crushing. When the electric slider is turned on, it drives the rotating ring 49 to rotate. When the rotating ring 49 rotates, it drives the push plate 491 to drive the cleaning arc plates 493 to approach or move away from each other, so that the crushing knife 481 can be quickly cleaned, avoiding the adhesion of ore and dust outside the crushing knife 481 from affecting the crushing of the ore. By moving the cleaning arc plate 493 on the crushing knife 481, the crushing depth of the crushing knife 481 during ore crushing can also be regulated. The baffle 494 can block the crushed stones, preventing the ore from splashing into the cleaning arc plate 493 during crushing and causing jamming, which will affect the cleaning of the crushing knife 481 by the immovable cleaning arc plate 493;

[0060] When the crushed ore falls and is screened, the receiving plate 390 is manually pulled out of the placement slot 39. At this time, a gap is generated between the receiving plate 390 and the concave box 31, and the ore particles on the receiving plate 390 fall off until the receiving plate 390 is completely removed from the placement slot 39. The sand and gravel in the receiving plate 390 fall off, and when the receiving plate 390 moves, the part that moves out of the placement slot 39 slides on the X-axis and continuously contacts the cleaning brush 392. At this time, the motor is turned on to drive The driving wheel 394 rotates, and when the driving wheel 394 rotates, it drives the tooth plate 391 to move through meshing. When the tooth plate 391 moves, it drives the cleaning brush 392 to move on the Y axis, thereby cleaning the surface of the receiving plate 390. After the receiving plate 390 is cleaned, the crushed ore falls onto the screen plate 24, and then the motor is turned on to drive the shaft 211 to rotate. When the shaft 211 rotates, it synchronously drives the cam 212 to rotate. When the cam 212 rotates, it squeezes the return frame 22. At this time, the return frame 22 is pressed After being squeezed, it moves toward the side away from the cam 212 to compress the spring on the external frame 21. When the cam 212 cancels the resistance to the return frame 22, the return frame 22 cancels the squeezing of the spring, and the return frame 22 is pushed to move toward the side of the cam 212 under the action of the spring. Thus, under the cooperation of the cam 212 and the spring, the return frame 22 is driven to slide back and forth on the external frame 21. At this time, the crushed ore in the return frame 22 is spread on the screen plate 24. The ore that meets the specifications falls onto the dumping plate 25 through the sieve plate 24. At the same time, as the ore is repeatedly spread out on the sieve plate 24, the metal particles of the ore are magnetically attracted to the sieve plate 24 when it is broken. The sieve plate 24 is then moved and taken out, and the large particles of ore that have not fallen off are dumped for secondary crushing, while the metal particles magnetically attracted to the sieve plate 24 fall down after being scraped externally, thereby effectively collecting the metal particles when the ore is broken, and at the same time, the ore that meets the standards can be collected in a centralized manner.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A coal mine crusher, comprising a collecting frame (1), characterized in that: Above the collection box (1), a screening unit (2) is placed. The screening unit (2) is used to screen the ore that has been crushed to make the ore that meets the specifications fall for collection. Above the screening unit (2), two pressing frames in a U-shaped structure and symmetrically arranged are pressed. The upper end faces of the two pressing frames are detachably installed with a placing unit (3). The placing unit (3) is used to centrally place the ore for crushing treatment when the ore is crushed. Above the placing unit (3), a crushing unit (4) is provided for pressing and crushing and roller pressing the ore.

2. A coal mine crusher according to claim 1, characterized in that: The screening unit (2) includes two symmetrically arranged outer frames (21). Rectangular grooves are formed in the two outer frames (21). A return frame (22) located in the middle of the two outer frames (21) is slidably installed in the rectangular grooves together. The outer frame (21) is arranged in an inverted L shape. A spring is jointly installed between one side of the outer frame (21) and the return frame (22). On the side of the two outer frames (21) away from the spring, there is a shaft rod (211) rotatably connected to the outer frame (21) through a motor. A cam (212) in contact with the return frame (22) is fixedly installed in the middle of the shaft rod (211). A tipping plate (25) is rotatably installed in the middle of the return frame (22). A placing port is formed on one side of the return frame (22). A sieve plate (24) located above the tipping plate (25) is arranged in the placing groove (39).

3. A coal mine crusher according to claim 2, characterized in that: On both sides of the inner wall of the outer frame (21), grooves (221) are formed. On one side of the groove (221), a clamping groove is formed on the tipping plate (25). A clamping plate (222) is slidably installed in the groove (221). When the clamping plate (222) is located inside the clamping groove, it is used to fix the tipping plate (25). A baffle (23) is slidably installed on one side of the return frame (22). A plurality of adjusting grooves (223) are formed on the return frame (22). An inner plate (224) fixed to the clamping plate (222) is slidably installed in the adjusting groove (223). A spring is jointly connected between the inner plate (224) and the return frame (22).

4. A coal mine crusher according to claim 1, characterized in that: The placing unit (3) includes a concave box (31). Hollow grooves (32) are formed on both sides of the inner cavity of the concave box (31). Ear plates (33) are fixedly installed on both outer sides of the concave box (31). A threaded rod (34) is rotatably installed on the ear plate (33) through a motor. An outer groove (35) formed on the outer wall of the concave box (31) is provided above the ear plate (33). Inner grooves (37) communicating with the hollow grooves (32) are formed on both sides of the inner cavity of the concave box (31). A lifting frame (36) threadedly rotated on the threaded rod (34) and slidably connected to the outer groove (35) is installed. A spring located in the hollow groove (32) is fixedly installed on the lifting frame (36). An impact frame (38) is slidably installed up and down in the inner groove (37). One end of the spring away from the lifting frame (36) is fixedly connected to the impact frame (38). A placing groove (39) is formed on the outside of the concave box (31). A receiving plate (390) clamped with the two impact frames (38) is placed in the placing groove (39).

5. A coal mine crusher according to claim 4, characterized in that: A toothed plate (391) is provided above the placement groove (39) and is connected to the outside of the concave box (31) in a left-right sliding manner. A cleaning brush (392) is fixedly installed in the middle of the lower end surface of the toothed plate (391). A mounting plate (393) fixed to the concave box (31) is provided above the toothed plate (391). A driving wheel (394) is installed on the lower end surface of the mounting plate (393) through rotation of a motor, and the driving wheel (394) is meshed with the toothed plate (391).

6. A coal mine crusher according to claim 1, characterized in that: The crushing unit (4) comprises two symmetrically arranged fixed frames (40), two symmetrically arranged cylinders (41) are fixedly mounted on the lower end surfaces of the fixed frames (40), a guide plate (42) is commonly mounted between the two cylinders (41), a telescopic plate (43) is slidably mounted on the lower end surface of the guide plate (42) via an electric slider, a rectangular plate (44) is fixedly mounted on the lower end surface of the telescopic plate (43), two symmetrically arranged fixed rods (441) are rotatably mounted between the two rectangular plates (44), symmetrically arranged flip plates (45) are fixedly mounted on the fixed rods (441) on both sides, and a crushing plate (451) is mounted on one side of the flip plate (45) via a spring.

7. A coal mine crusher according to claim 6, characterized in that: The rectangular plate (44) is provided with symmetrically arranged side grooves (442) on both sides, a moving block (443) is slidably installed in the side groove (442), a traction plate (444) is rotatably installed on the moving block (443), a built-in rod (445) is fixedly installed on the side of the traction plate (444) away from the moving block (443), a through groove (452) is provided in the middle of the flip plate (45), and the built-in rod (445) is located in the through groove (452).

8. A coal mine crusher according to claim 7, characterized in that: An electric push rod (454) is fixedly installed in the middle of the rectangular plate (44), and a convex shaft (453) is fixedly installed on the adjacent side of the two flip plates (45). A fixed sleeve (455) for externally clamping the convex shaft (453) is rotatably installed at the telescopic end of the electric push rod (454).

9. A coal mine crusher according to claim 8, characterized in that: A plurality of gears (46) arranged at equal intervals are rotatably mounted on one side of the rectangular plate (44); the gear (46) located at the center is rotatably connected to the rectangular plate (44) via a motor; a rotating rod (47) is fixedly mounted on one side of the gear (46) and is rotatable with the rectangular plate (44) on the other side; a rotating roller (48) is fixedly mounted on the outside of the rotating rod (47); and a plurality of crushing knives (481) arranged at equal intervals are fixedly mounted on the outside of the rotating roller (48).

10. A coal mine crusher according to claim 9, characterized in that: A rotating ring (49) is rotatably installed on both sides of the rotating roller (48) through an electric slider, and a plurality of circumferentially arranged pushing plates (491) are hingedly connected to the outside of the rotating ring (49), and a connecting shaft (492) is hingedly connected to one end of the pushing plate (491). A cleaning arc plate (493) is installed between the left and right connecting shafts (492), and one side of the cleaning arc plate (493) is slidably connected to the rotating roller (48). The cleaning arc plate (493) is provided with a plurality of through holes that are sleeved on the outside of the crushing knife (481), and a shielding plate (494) is installed between every two adjacent cleaning arc plates (493).

Images