A mobile crushing and screening equipment

Abstract

The present invention belongs to the technical field of coal mine screening, specifically a mobile crushing and screening equipment, including an equipment main base; a processing conveyor is installed on the equipment main base; a crushing and screening box is fixedly connected to the outside of the equipment main base and away from the processing conveyor; the crushing and screening box is fixed to the top of the mobile frame by the arrangement, and the mobile frame is pulled by the vehicle and moved in conjunction with two wheels, thereby playing a role in mobile crushing and screening mining of coal mines, and the square plate is driven by the output end of the hydraulic cylinder to support it on the ground, and cooperates with multiple top blocks to penetrate into particles and lumps, thereby playing a role in supporting and limiting the crushing and screening equipment, and the crushing roller rotates quickly in conjunction with the No. 1 short rod, which can crush the mined coal, and use the No. 1 filter plate and the No. 2 filter plate to filter the crushed coal, which is convenient for subsequent coal processing, and relies on the guide box to be fixed to the top of the crushing and screening box in conjunction with the No. 2 guide block, thereby playing a role in guiding the crushing of the coal mine.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine screening, in particular to a mobile crushing and screening device. Background Art

[0002] Minerals are natural substances stored underground. Minerals generally refer to coal mines, minerals and iron ore, among which coal mines are known as black gold and food for industrial production. Although the value of coal is not as high as before, it is still one of the indispensable sources of energy.

[0003] When mining coal, crushing and screening equipment is usually used to be fixed in the mine to crush and screen the mined coal, thereby refining the mined coal to facilitate subsequent processing and use in various industries in the coal mine.

[0004] In the process of coal mining, crushing and screening equipment is used to crush and screen the mined coal. Most mining crushing and screening equipment is usually installed in the mine for fixed assembly. However, due to the heavy weight of the equipment, it will not be continuously mined in a single location, making it difficult for the crushing and screening equipment to be convenient for mobile mining of minerals.

[0005] To this end, the present invention provides a mobile crushing and screening device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a mobile crushing and screening equipment described in the present invention includes a main base of the equipment; a processing conveyor is installed on the main base of the equipment; a crushing and screening box is fixedly connected to the outside of the main base of the equipment and away from the processing conveyor; a servo motor is fixedly connected to the outside of the crushing and screening box; the output end of the servo motor is fixedly connected to a crushing roller, and the crushing roller is rotatably connected to the inside of the crushing and screening box; a plurality of No. 1 short rods are fixedly connected to the outside of the crushing roller; a No. 1 guide block is symmetrically fixedly connected to the inside of the crushing and screening box and near the bottom of the crushing roller; a conveyor is installed inside the crushing and screening box and at the bottom of the crushing roller; a screening assembly is provided inside the crushing and screening box, and the screening assembly is used for screening coal mines; a moving mechanism is provided at the bottom end of the crushing and screening box, and the moving mechanism is used to cooperate with the position transfer of the crushing and screening box.

[0008] Preferably, the mobile mechanism includes a mobile frame, a trailer hook, a rotating shaft, wheels and a support assembly; the mobile frame is fixed to the bottom end of the crushing and screening box; the trailer hook is fixed to the outside of the mobile frame; the bottom end of the mobile frame is internally rotatably connected to the rotating shaft; both ends of the rotating shaft are fixed with wheels; the support assembly is arranged at the bottom of the mobile frame, and the support assembly is used to support the parking of the crushing and screening box.

[0009] Preferably, the support assembly includes a hydraulic cylinder, a square plate and a top block; the hydraulic cylinder is fixedly connected to the bottom end of the mobile frame, and multiple hydraulic cylinders are provided; the square plate is fixedly connected to the bottom end of the hydraulic cylinder; and multiple top blocks are fixedly connected to the bottom end of the square plate.

[0010] Preferably, the screening assembly includes a No. 1 filter plate, a filter frame and a No. 2 filter plate; the No. 1 filter plate is fixed to the inside of the crushing and screening box, the No. 1 filter plate is located below the crushing roller, and the No. 1 filter plate is tilted.

[0011] Preferably, a material guide box is fixedly connected to the top of the crushing and screening box; and a No. 2 guide block is symmetrically fixedly connected to the inside of the material guide box.

[0012] Preferably, the top inner wall of the crushing and screening box is symmetrically fixed with blocking blocks, and the blocking blocks are located above the crushing rollers; and a plurality of crushing blocks are fixed to the outsides of the two blocking blocks.

[0013] Preferably, an electric cylinder is fixedly connected to the interior of the crushing and screening box, and the electric cylinder is located above the second filter plate; and a pressure plate is fixedly connected to the output end of the electric cylinder.

[0014] Preferably, a No. 2 short rod is fixedly connected to the bottom end of the pressure plate, and a plurality of No. 2 short rods are provided; the plurality of No. 2 short rods correspond to the holes of the No. 2 filter plate.

[0015] Preferably, a threaded rod is fixed to the bottom end of the pressure plate; a threaded ring is rotatably connected to the middle part of the top of the No. 2 filter plate; a scraper is fixed to the outside of the threaded ring; a scraping groove is provided on the outside of the scraper; a placement groove is provided at the bottom end of the pressure plate, and the placement groove corresponds to the shape of the scraper.

[0016] Preferably, a plurality of knocking blocks are fixedly connected to the interior of the crushing roller; and a plurality of impact balls are arranged inside the crushing roller.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The mobile crushing and screening equipment described in the present invention is a crushing and screening box fixed on the top of the mobile frame, which is pulled by a vehicle and moved in conjunction with two wheels to play the role of mobile crushing and screening for coal mines. The output end of the hydraulic cylinder drives the square plate to support it on the ground, and cooperates with multiple top blocks to penetrate into particles and lumps, which plays the role of supporting and limiting the crushing and screening equipment. The crushing roller rotates rapidly in conjunction with the No. 1 short rod, which can crush the mined coal. The No. 1 filter plate and the No. 2 filter plate are used to filter the crushed coal, which is convenient for subsequent coal processing. The material guide box is fixed on the top of the crushing and screening box in conjunction with the No. 2 guide block, which plays the role of guiding the crushing of the coal mine.

[0019] 2. The mobile crushing and screening equipment described in the present invention can crush the flying coal blocks for the second time by cooperating with the crushing blocks fixed above the crushing roller, and utilizes the output end of the electric cylinder to drive the pressure plate to press down, so as to squeeze and crush the coal blocks temporarily stored on the No. 2 filter plate, and utilizes multiple No. 2 short rods to be fixed on the bottom end of the pressure plate. As the pressure plate is pressed down, multiple No. 2 short rods are inserted into the holes of the No. 2 filter plate, thereby reducing the coal blocking the holes of the No. 2 filter plate, and relying on the threaded rod and the threaded ring to cooperate with each other, it can drive the scraper to scrape the coal on the surface of the No. 2 filter plate, thereby improving the filtering effect of the No. 2 filter plate, and utilizes the impact ball to impact the knocking block when the crushing roller rotates, thereby achieving the effect of vibrating and cleaning the coal attached to the surface of the crushing roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a plan view of the coal mining machine of the present invention;

[0022] Figure 2 It is a perspective view of the present invention;

[0023] Figure 3 It is a partial structural sectional view of the crushing and screening box of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the pressure plate of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the scraper in the present invention;

[0026] Figure 6 It is a schematic structural diagram of the square plate in the present invention;

[0027] Figure 7 It is a partial structural sectional view of the crushing roller in the present invention.

[0028] In the figure: 1. Crushing and screening box; 11. Servo motor; 12. Crushing roller; 13. Short rod No. 1; 14. Guide block No. 1; 15. Conveyor; 2. Filter plate No. 1; 21. Filter rack; 22. Filter plate No. 2; 3. Material guide box; 31. Guide block No. 2; 4. Block; 41. Crushing block; 5. Electric cylinder; 51. Pressing plate; 6. Short rod No. 2; 7. Threaded rod; 71. Threaded collar; 72. Scraper; 73. Placement trough; 8. Moving frame; 81. Trailer hook; 82. Rotating shaft; 83. Wheel; 9. Hydraulic cylinder; 91. Square plate; 92. Top block; 93. Knocking block; 94. Impact ball; 101. Main base of equipment; 102. Processing conveyor. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1 to 3 and Figure 7 As shown, a mobile crushing and screening device according to an embodiment of the present invention includes a main base 101 of the device; a processing conveyor 102 is installed on the main base 101 of the device; a crushing and screening box 1 is fixedly connected to the outside of the main base 101 and away from the processing conveyor 102; a servo motor 11 is fixedly connected to the outside of the crushing and screening box 1; a crushing roller 12 is fixedly connected to the output end of the servo motor 11, and the crushing roller 12 is rotatably connected to the inside of the crushing and screening box 1; a plurality of No. Short rod 13; inside the crushing and screening box 1 and near the bottom of the crushing roller 12, there is a guide block 14 symmetrically fixed; inside the crushing and screening box 1 and at the bottom of the crushing roller 12, a conveyor 15 is installed; inside the crushing and screening box 1, a screening assembly is provided, which is used to screen the coal mine; the bottom end of the crushing and screening box 1 is provided with a moving mechanism, which is used to cooperate with the position transfer of the crushing and screening box 1; when mining coal, the main base 101 of the equipment serves as the main structure of the entire coal mining machine, and the processing conveyor 102 and crushing and screening box 1 are installed on the top of the main base 101 of the equipment. The processing conveyor 102 is used to transport the materials, and the crushing and screening box 1 is used to crush and screen the coal blocks. The crushing and screening box 1 can be disassembled from the entire coal mining machine. First, the crushing and screening box 1 is fixed on the mobile mechanism, and the front of the mobile mechanism is connected to the vehicle for traction. The connected crushing and screening equipment is sent to the coal mine where it needs to be driven. The mined coal is put into the crushing and screening box 1 from the top. The coal falls between the crushing roller 12 and the first guide block 14. During the operation, the output end of the servo motor 11 drives the crushing roller 12 to rotate rapidly, and multiple No. 1 short rods 13 outside the crushing roller 12 quickly hit and crush the coal on the No. 1 guide block 14. The crushed coal falls onto the screening assembly, and the screening assembly finely screens the crushed coal. Finally, the fine coal falls onto the conveyor 15 and is transported out of the crushing and screening box 1 for loading. With the continuous mining of the coal mine and the continuous change of the mining position, the vehicle tows the crushing and screening equipment to continue to move, thereby facilitating the crushing and screening equipment to mine minerals in a mobile manner.

[0031] like Figures 1 to 3 and Figure 6As shown, the mobile mechanism includes a mobile frame 8, a trailer hook 81, a rotating shaft 82, wheels 83 and a support assembly; the mobile frame 8 is fixedly connected to the bottom end of the crushing and screening box 1; the outside of the mobile frame 8 is fixedly connected to the trailer hook 81; the bottom end of the mobile frame 8 is internally rotatably connected to the rotating shaft 82; both ends of the rotating shaft 82 are fixedly connected to wheels 83; the support assembly is arranged at the bottom of the mobile frame 8, and the support assembly is used to park and support the crushing and screening box 1; during the process of coal mining, the tail of the vehicle is connected to the trailer hook 81 installed on the outside of the mobile frame 8, and the rotating shaft 82 supports the two wheels 83 to rotate at the bottom of the mobile frame 8. The vehicle pulls and tows the mobile frame 8 to rotate and move by the wheels 83, and the crushing and screening equipment is delivered to the coal mining site. The crushing and screening equipment is set up and put into operation by the support assembly, thereby realizing mobile mining of the coal mine.

[0032] The supporting assembly includes a hydraulic cylinder 9, a square plate 91 and a top block 92; the hydraulic cylinder 9 is fixedly connected to the bottom end of the mobile frame 8, and a plurality of hydraulic cylinders 9 are provided; the square plate 91 is fixedly connected to the bottom end of the hydraulic cylinder 9; a plurality of top blocks 92 are fixedly connected to the bottom end of the square plate 91; when supporting and limiting the crushing and screening equipment, after the crushing and screening equipment is moved to the coal mining position, the output end of the hydraulic cylinder 9 is extended downward. The hydraulic cylinder 9 can be provided with two or four, depending on the actual weight of the crushing and screening equipment. The square plate 91 extends downward with the output end of the hydraulic cylinder 9, and the two wheels 83 are lifted into the air. Since there are more particles and lumps on the ground of the mine, the top block 92 is used to contact the ground for support, and penetrates into the particles and lumps, thereby playing a role in supporting and limiting the mobile crushing and screening equipment.

[0033] like Figures 1 to 3 and Figure 5 As shown, the screening assembly includes a No. 1 filter plate 2, a filter frame 21 and a No. 2 filter plate 22; the No. 1 filter plate 2 is fixedly connected to the inside of the crushing and screening box 1, the No. 1 filter plate 2 is located below the crushing roller 12, and the No. 1 filter plate 2 is tilted; when the coal mine is crushed by multiple No. 1 short rods 13, the broken coal blocks fall on the No. 1 filter plate 2 for filtration, and the finer coal after the coal mine is crushed will be filtered out by the No. 1 filter plate 2 and fall onto the conveyor 15 for transportation and loading, while the coal blocks that are too large and fall on the No. 1 filter plate 2 can roll down to the No. 2 filter plate 22 along the tilt slope of the No. 1 filter plate 2, and the filter frame 21 supports the No. 2 filter plate 22 to temporarily store the falling coal blocks, thereby sorting and screening the broken coal.

[0034] like Figures 1 to 3As shown, a material guide box 3 is fixed to the top of the crushing and screening box 1; a No. 2 guide block 31 is symmetrically fixed inside the material guide box 3; when the coal mine is put into the crushing and screening box 1 for internal crushing and screening after mining, the material guide box 3 is fixed at the feed port of the crushing and screening box 1 to expand the feed diameter of the feed port of the crushing and screening box 1, and two No. 2 guide blocks 31 are symmetrically fixed on the inner wall of the material guide box 3. After the material enters the interior of the material guide box 3, it falls to the middle of the crushing roller 12 along the slope guidance of the two No. 2 guide blocks 31, and can be quickly crushed by multiple No. 1 short bars 13, thereby improving the crushing effect of the mined coal mine. At the same time, the two No. 2 guide blocks 31 are fixed above the crushing roller 12, which can shield the coal blocks that are crushed and splashed by multiple No. 1 short bars 13, thereby reducing the situation where coal blocks splash out.

[0035] The top inner wall of the crushing and screening box 1 is symmetrically fixed with blocks 4, and the blocks 4 are located above the crushing roller 12; a plurality of crushing blocks 41 are fixed to the outside of the two blocks 4; when the coal ore put into the crushing and screening box 1 is crushed, the coal ore falls to the outside of the crushing roller 12 and is crushed by the No. 1 short rod 13. Since the rotation speed of the crushing roller 12 is too fast, the crushed coal ore is easy to splash. The blocks 4 are fixed on both sides of the top of the crushing roller 12 to reduce the splash of coal blocks, and multiple crushing blocks 41 are fixed on the outside of the bottom end of the blocks 4. The splashing coal blocks hit the multiple crushing blocks 41, which can achieve the effect of secondary crushing of the splashing coal blocks and improve the coal mining effect.

[0036] like Figures 1 to 5 As shown, the interior of the crushing and screening box 1 is fixedly connected to an electric cylinder 5, and the electric cylinder 5 is located above the No. 2 filter plate 22; the output end of the electric cylinder 5 is fixedly connected to a pressure plate 51; when part of the coal blocks filtered out by the No. 1 filter plate 2 fall on the No. 2 filter plate 22 for temporary storage, the output end of the electric cylinder 5 is extended downward to drive the pressure plate 51 to squeeze and crush the coal blocks on the No. 2 filter plate 22, thereby achieving the effect of crushing the coal blocks temporarily stored on the No. 2 filter plate 22.

[0037] A No. 2 short rod 6 is fixedly connected to the bottom end of the pressure plate 51, and a plurality of No. 2 short rods 6 are provided; the plurality of No. 2 short rods 6 correspond to the holes of the No. 2 filter plate 22; when the coal blocks on the No. 2 filter plate 22 are crushed, the No. 2 filter plate 22 filters the crushed coal blocks, and the No. 2 filter plate 22 filters the coal for a long time, and some of the coal is easily attached to the holes of the No. 2 filter plate 22 and inside to cause blockage. When the pressure plate 51 is used to squeeze and crush the coal on the No. 2 filter plate 22, a plurality of No. 2 short rods 6 are inserted into the holes of the No. 2 filter plate 22 to clear the holes of the No. 2 filter plate 22, thereby reducing some of the coal from being blocked in the holes of the No. 2 filter plate 22.

[0038] The bottom end of the pressure plate 51 is fixedly connected to a threaded rod 7; the middle part of the top of the No. 2 filter plate 22 is rotatably connected to a threaded collar 71; the outside of the threaded collar 71 is fixedly connected to a scraper 72; the outside of the scraper 72 is provided with a scraping groove; the bottom end of the pressure plate 51 is provided with a placement groove 73, and the placement groove 73 corresponds to the shape of the scraper 72; when the coal blocks temporarily stored on the No. 2 filter plate 22 are squeezed and crushed, the pressure plate 51 drives the threaded rod 7 to slide down synchronously, and the threaded rod 7 is inserted into the internal thread of the threaded collar 71 for cooperation. As the threaded rod 7 continues to slide down, the threaded collar 71 drives multiple scrapers 72 to rotate rapidly. Multiple scrapers 72 cooperate with the scraping groove to scrape the crushed coal on the surface of the No. 2 filter plate 22, thereby improving the effect of filtering the coal on the No. 2 filter plate 22. When the pressure plate 51 is pressed above the No. 2 filter plate 22, the scraper 72 can be retracted in the placement groove 73.

[0039] like Figures 1 to 3 and Figure 7 As shown, a plurality of knocking blocks 93 are fixedly connected to the interior of the crushing roller 12; a plurality of impact balls 94 are arranged inside the crushing roller 12; when the crushing roller 12 cooperates with a plurality of No. 1 short rods 13 to quickly rotate and crush the coal, since some of the crushed coal is easy to adhere to the surface of the crushing roller 12, the coal adheres to the surface of the crushing roller 12 for a long time, which increases the load of the servo motor 11 and affects the rotation speed. A plurality of impact balls 94 are placed inside the crushing roller 12, and continuously hit the plurality of knocking blocks 93 when the crushing roller 12 rotates rapidly to generate vibration. The vibration enables the coal on the surface of the crushing roller 12 to be shaken off, thereby reducing the adhesion of coal to the surface of the crushing roller 12.

[0040] Working process: When mining coal, the main base 101 of the equipment serves as the main structure of the entire coal mining machine. The processing conveyor 102 and the crushing and screening box 1 are installed on the top of the main base 101 of the equipment. The processing conveyor 102 is used to transport materials, and the crushing and screening box 1 is used to crush and screen coal blocks. The crushing and screening box 1 can be disassembled from the entire coal mining machine. First, the crushing and screening box 1 is fixed on the mobile mechanism, and the front of the mobile mechanism is connected to a vehicle for traction, and the connected crushing and screening equipment is delivered to the coal mine where it needs to be driven. At the mine, the mined coal is put into the crushing and screening box 1 from the top. The coal falls between the crushing roller 12 and the No. 1 guide block 14. The output end of the servo motor 11 drives the crushing roller 12 to rotate rapidly. The multiple No. 1 short rods 13 outside the crushing roller 12 quickly hit and crush the coal on the No. 1 guide block 14. The crushed coal falls onto the screening assembly, which finely screens the crushed coal. Finally, the fine coal falls onto the conveyor 15 and is transported out of the crushing and screening box 1 for loading. With the continuous mining of the coal mine, , the mining position is constantly changing, and the vehicle tows the crushing and screening equipment to continuously move, thereby facilitating the crushing and screening equipment to mine minerals in a mobile manner; in the process of coal mining, the tail of the vehicle is connected to the trailer hook 81 installed on the outside of the mobile frame 8, and the rotating shaft 82 supports the two wheels 83 to rotate at the bottom of the mobile frame 8. The vehicle pulls and pulls the mobile frame 8 to rotate and move by the wheels 83, and the crushing and screening equipment is sent to the coal mining location. The crushing and screening equipment is set up by the support assembly to work, thereby realizing mobile mining of the coal mine; when the crushing and screening equipment is supported and limited, after the crushing and screening equipment is moved to the coal mining location, the output end of the hydraulic cylinder 9 is extended downward, and the hydraulic cylinder 9 can be set with two or four, depending on the actual weight of the crushing and screening equipment. The square plate 91 extends downward with the output end of the hydraulic cylinder 9, and the two wheels 83 are lifted up. Since there are more particles and blocks on the ground of the mine, the top block 92 is supported by contacting the ground and penetrating into the particles and blocks, thereby playing a role in supporting and limiting the mobile crushing and screening equipment;

[0041] After the coal is crushed by multiple No. 1 short rods 13, the crushed coal blocks fall onto the No. 1 filter plate 2 for filtration. The finer coal after the coal is crushed will be filtered out by the No. 1 filter plate 2 and fall onto the conveyor 15 for transportation and loading. The oversized coal blocks that fall on the No. 1 filter plate 2 can roll down to the No. 2 filter plate 22 along the inclination of the No. 1 filter plate 2. The filter frame 21 supports the No. 2 filter plate 22 to temporarily store the falling coal blocks, thereby playing the role of sorting and screening the crushed coal.

[0042] When the coal is put into the crushing and screening box 1 for internal crushing and screening after mining, the guide box 3 is fixed at the feed port of the crushing and screening box 1 to expand the feed diameter of the feed port of the crushing and screening box 1, and the two No. 2 guide blocks 31 are symmetrically fixed on the inner wall of the guide box 3. After the material enters the interior of the guide box 3, it falls to the middle of the crushing roller 12 along the slope guidance of the two No. 2 guide blocks 31, and can be quickly crushed by the multiple No. 1 short bars 13, thereby improving the crushing effect of the mined coal. At the same time, the two No. 2 guide blocks 31 are fixed above the crushing roller 12, which can shield the coal blocks that are crushed and splashed by the multiple No. 1 short bars 13, thereby reducing the situation where the coal blocks splash out;

[0043] When the coal ore put into the crushing and screening box 1 is crushed, the coal ore falls to the outside of the crushing roller 12 and is crushed by the No. 1 short rod 13. Since the rotation speed of the crushing roller 12 is too fast, the crushed coal ore is easy to splash. The blocking blocks 4 are fixed on both sides of the top of the crushing roller 12 to reduce the splashing of coal blocks. In addition, multiple crushing blocks 41 are fixed on the outside of the bottom end of the blocking blocks 4. The splashing coal blocks hit the multiple crushing blocks 41, which can achieve the effect of secondary crushing of the splashing coal blocks and improve the coal mining effect.

[0044] When some of the coal blocks filtered out by the No. 1 filter plate 2 fall on the No. 2 filter plate 22 for temporary storage, the output end of the electric cylinder 5 is extended downward to drive the pressure plate 51 to squeeze and crush the coal blocks on the No. 2 filter plate 22, thereby achieving the effect of crushing the coal blocks temporarily stored on the No. 2 filter plate 22; after the coal blocks on the No. 2 filter plate 22 are crushed, the No. 2 filter plate 22 filters the crushed coal blocks, and the No. 2 filter plate 22 filters the coal for a long time, and some coal is easily attached to the holes of the No. 2 filter plate 22 and inside the No. 2 filter plate 22, causing blockage. When the pressure plate 51 is used to squeeze and crush the coal on the No. 2 filter plate 22, multiple No. 2 short rods 6 are inserted into the holes of the No. 2 filter plate 22 to dredge the holes of the No. 2 filter plate 22, thereby reducing the blockage of some coal in the holes of the No. 2 filter plate 22;

[0045] When the coal temporarily stored on the No. 2 filter plate 22 is squeezed and crushed, the pressure plate 51 drives the threaded rod 7 to slide down synchronously, and the threaded rod 7 is inserted into the internal thread of the threaded collar 71 for engagement. As the threaded rod 7 continues to slide down, the threaded collar 71 drives the multiple scrapers 72 to rotate rapidly. The multiple scrapers 72 cooperate with the scraping grooves to scrape the crushed coal on the surface of the No. 2 filter plate 22, thereby improving the effect of filtering the coal on the No. 2 filter plate 22. When the pressure plate 51 is pressed on the No. 2 filter plate 22, the scrapers 72 can be retracted in the placement grooves 73;

[0046] When the crushing roller 12 cooperates with multiple No. 1 short rods 13 to quickly rotate and crush the coal, since some of the crushed coal is easy to adhere to the surface of the crushing roller 12, the coal adheres to the surface of the crushing roller 12 for a long time, which increases the load of the servo motor 11 and affects the rotation speed. Multiple impact balls 94 are placed inside the crushing roller 12. When the crushing roller 12 rotates rapidly, they continuously hit multiple knocking blocks 93 to generate vibrations. The vibration allows the coal on the surface of the crushing roller 12 to be shaken off, thereby reducing the adhesion of coal on the surface of the crushing roller 12.

[0047] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile crushing and screening equipment, characterized by: The invention comprises a main base (101) of the equipment; a processing conveyor (102) is installed on the main base (101) of the equipment; a crushing and screening box (1) is fixedly connected to the outside of the main base (101) and away from the processing conveyor (102); a servo motor (11) is fixedly connected to the outside of the crushing and screening box (1); a crushing roller (12) is fixedly connected to the output end of the servo motor (11), and the crushing roller (12) is rotatably connected to the inside of the crushing and screening box (1); the crushing roller (12) A plurality of No. 1 short rods (13) are fixedly connected to the outside; a No. 1 guide block (14) is symmetrically fixedly connected to the inside of the crushing and screening box (1) and close to the bottom of the crushing roller (12); a conveyor (15) is installed inside the crushing and screening box (1) and at the bottom of the crushing roller (12); a screening assembly is provided inside the crushing and screening box (1), and the screening assembly is used to screen coal; a moving mechanism is provided at the bottom end of the crushing and screening box (1), and the moving mechanism is used to cooperate with the position transfer of the crushing and screening box (1); The screening assembly comprises a No. 1 filter plate (2), a filter frame (21) and a No. 2 filter plate (22); the No. 1 filter plate (2) is fixedly connected to the interior of the crushing and screening box (1), the No. 1 filter plate (2) is located below the crushing roller (12), and the No. 1 filter plate (2) is tilted; An electric cylinder (5) is fixedly connected to the interior of the crushing and screening box (1), and the electric cylinder (5) is located above the second filter plate (22); a pressure plate (51) is fixedly connected to the output end of the electric cylinder (5); A second short rod (6) is fixedly connected to the bottom end of the pressure plate (51), and a plurality of the second short rods (6) are provided; the plurality of the second short rods (6) correspond to the holes of the second filter plate (22); When the pressure plate (51) is used to squeeze and crush the coal on the second filter plate (22), a plurality of second short rods (6) are inserted into the holes of the second filter plate (22) to clear the holes of the second filter plate (22); The bottom end of the pressure plate (51) is fixedly connected to a threaded rod (7); the middle part of the top end of the second filter plate (22) is rotatably connected to a threaded collar (71); the outside of the threaded collar (71) is fixedly connected to a scraper (72); the outside of the scraper (72) is provided with a scraping groove; the bottom end of the pressure plate (51) is provided with a placement groove (73), and the placement groove (73) corresponds to the shape of the scraper (72); When the coal blocks temporarily stored on the No. 2 filter plate (22) are squeezed and crushed, the pressure plate (51) drives the threaded rod (7) to slide down synchronously, and the threaded rod (7) is inserted into the internal thread of the threaded collar (71) to cooperate. As the threaded rod (7) continues to slide down, the threaded collar (71) drives the multiple scrapers (72) to rotate rapidly. The multiple scrapers (72) cooperate with the scraping groove to scrape the crushed coal on the surface of the No. 2 filter plate (22). When the pressure plate (51) is pressed on the top of the No. 2 filter plate (22), the scrapers (72) can be retracted in the placement groove (73).

2. The mobile crushing and screening equipment according to claim 1, characterized in that: The mobile mechanism comprises a mobile frame (8), a trailer hook (81), a rotating shaft (82), wheels (83) and a support assembly; the mobile frame (8) is fixed to the bottom end of the crushing and screening box (1); the trailer hook (81) is fixed to the outside of the mobile frame (8); the rotating shaft (82) is rotatably connected to the inside of the bottom end of the mobile frame (8); both ends of the rotating shaft (82) are fixed to wheels (83); the support assembly is arranged at the bottom of the mobile frame (8), and the support assembly is used to support the crushing and screening box (1) for parking.

3. The mobile crushing and screening equipment according to claim 2, characterized in that: The support assembly comprises a hydraulic cylinder (9), a square plate (91) and a top block (92); the hydraulic cylinder (9) is fixedly connected to the bottom end of the mobile frame (8), and a plurality of hydraulic cylinders (9) are provided; the square plate (91) is fixedly connected to the bottom end of the hydraulic cylinder (9); and a plurality of top blocks (92) are fixedly connected to the bottom end of the square plate (91).

4. The mobile crushing and screening equipment according to claim 1, characterized in that: A material guide box (3) is fixedly connected to the top of the crushing and screening box (1); and a second guide block (31) is symmetrically fixedly connected inside the material guide box (3).

5. The mobile crushing and screening equipment according to claim 1, characterized in that: Blocks (4) are symmetrically fixed to the inner wall of the top of the crushing and screening box (1), and the block (4) is located above the crushing roller (12); and a plurality of crushing blocks (41) are fixed to the outside of the two block (4).

6. The mobile crushing and screening equipment according to claim 1, characterized in that: A plurality of knocking blocks (93) are fixedly connected to the interior of the crushing roller (12); and a plurality of impact balls (94) are arranged inside the crushing roller (12).

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