Downhole rolling type polyhedral coal forming method and green transportation system

Abstract

The invention discloses an underground rolling type polyhedral coal forming method and a green transportation system. The method comprises the following steps: (1) raw coal is input into a crusher through a belt to be crushed and drained; (2) rolling and forming polyhedral coal particles with the diameter of 40.5 + / -0.5 mm under the pressure of 50-100 MPa; and (3) marking marks on the surfaces of the polyhedral coal particles, and directly outputting the polyhedral coal particles marked with the marks to a transportation system. The system comprises a rolling forming machine and a laser coding device arranged on the front side of the rolling forming machine, and the rolling forming machine comprises a supporting frame, a motor, a speed reducer, a transmission device, a front roller assembly, a rear roller assembly, a transmission steering device and a rolling driving assembly. And the rolling model II of the rear roller assembly and the rolling model I of the front roller assembly can be jointly extruded to form polyhedral coal particles. The coal formed by adopting the method has the characteristics of anti-freezing adhesion, dust suppression and hardening prevention, the system integrates forming and coding functions, the coal transportation efficiency is effectively improved, and the transportation cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of coal forming and transportation technology, and in particular to an underground roller pressing method for forming polyhedral coal and a green transportation system. Background Technology

[0002] Coal is an important energy source and industrial raw material, and my country consumes a large amount of it every year. After mining, coal needs to be transported and stored. When unprocessed coal is transported directly, the small particle size of the pulverized coal easily causes dust pollution. Therefore, the industry extrudes coal into specific shapes before transportation, such as honeycomb briquettes. However, the use of this specific shape is limited, and it occupies a lot of space and has low transportation efficiency. In low-temperature environments (below 0°C), if coal comes into contact with rain, snow, or high humidity, the moisture will freeze, causing clumping and sticking. For high-moisture coal that is prone to freezing and sticking, heating devices are usually installed on the inner walls of the coal storage silo to maintain the temperature above 0°C and prevent coal from sticking to the walls and clumping, but this requires a lot of electricity. Coal clumping and sticking also affect transportation. During transportation, coal can easily freeze and stick to conveyor belts and truck bodies, leading to reduced transportation efficiency and difficulties in unloading. To address this, the industry commonly adds antifreeze to the coal before transportation in winter or installs insulation layers in the transportation equipment to reduce coal clumping and sticking during transportation. Antifreeze not only corrodes transportation equipment but is also expensive; for example, traditional antifreeze CaCl2 costs several hundred yuan per ton, increasing the overall cost of coal. Adding insulation layers inside transportation equipment also increases transportation costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the existing technology by providing an underground roller-pressed polyhedral coal forming method and a green transportation system. The formed coal has anti-freezing and anti-caking properties. The system integrates crushing, forming, and coding functions, effectively improving coal transportation efficiency and reducing transportation costs.

[0004] The technical solution adopted by the present invention to achieve the above objectives is: a method for forming polyhedral coal by roller pressing in underground mines, comprising the following steps: (i) feeding raw coal into a crusher via a belt conveyor for crushing and draining; (ii) pressing polyhedral coal particles with a diameter of 40.5±0.5mm under a pressure of 50-100MPa; (iii) marking the surface of the polyhedral coal particles with a laser marking device, and directly outputting the marked polyhedral coal particles to the transportation system.

[0005] A further technical solution of the present invention is: the polyhedral coal particle has a decahedral structure, which is a decahedral structure formed by the bottom faces of two quadrangular frustums touching.

[0006] To achieve the above objectives, the present invention employs another technical solution: an underground roller-pressed polyhedral coal green transportation system for forming and transporting the aforementioned polyhedral coal particles, comprising a roller pressing machine and a laser marking device disposed at the front of the roller pressing machine. The roller pressing machine includes a support frame, a motor, a reducer, a transmission device, a front roller assembly, a rear roller assembly, and a transmission steering device. The motor and the reducer are interconnected and disposed on the upper rear end of the support frame. The front roller assembly and the rear roller assembly are disposed side by side at the front end of the support frame. The upper rear pressure roller assembly includes a rotating shaft I and a roller pressing model I connected to the outside of the rotating shaft I. End support steel plates I are connected to both ends of the rotating shaft I. The roller pressing models I are evenly arranged in a ring matrix outside the rotating shaft I, with both ends connected to the end support steel plates I to form an integral structure. The front pressure roller assembly includes a rotating shaft II and a roller pressing model II connected to the outside of the rotating shaft II. End support steel plates II are connected to both ends of the rotating shaft II. The roller pressing models II are evenly arranged in a ring matrix outside the rotating shaft II. The two ends of the pressing model II are connected to the end support steel plate II to form an integral structure. The pressing model I and the pressing model II are symmetrically arranged. The two ends of the rotating shaft I are supported by a pair of bearing seats I fixed on the support frame. The rear end of the transmission device is connected to the output end of the reducer, and the front end of the transmission device is connected to the right end of the rotating shaft I. The two ends of the rotating shaft II are supported by a pair of bearing seats II slidably connected to the support frame. The two bearing seats II are respectively set on the front side of the two bearing seats I. The support frame at the bottom of the two bearing seats II is equipped with a slide rail. The bottom of the two bearing seats II is respectively connected to a slider that cooperates with the slide rail. The transmission steering device is connected between the left end of the rotating shaft I and the left end of the rotating shaft II. The transmission steering device makes the rotating shaft I and the rotating shaft II rotate in opposite directions. At the front end of the support frame, there is a rolling drive assembly that can push the two bearing seats II to move backward on the slide rail. The rolling drive assembly can push the two bearing seats II to move backward so that the pressing model II presses the pressing model I and maintains the pressure for one pressing cycle to extrude the coal located between the pressing model II and the pressing model I into polyhedral coal particles.

[0007] A further technical solution of the present invention is as follows: the transmission device includes a belt I, a pulley I, and a pulley II. The output shaft of the reducer is connected to the pulley I. The right end of the rotating shaft I is connected to the pulley II. The belt I is connected between the pulley I and the pulley II. A forward-extending conveyor belt is provided between the support frames on the lower side of the front pressure roller assembly and the rear pressure roller assembly. A conveyor belt drive shaft is provided on the support frame on the lower side of the rotating shaft I. The right end of the conveyor belt drive shaft is connected to the pulley III. The pulley II connected to the right end of the rotating shaft I is a double pulley. The belt II is connected between the pulley II and the pulley III.

[0008] A further technical solution of the present invention is: the laser marking device is installed at the front end of the roll forming machine, the conveyor belt extends forward through the mounting bracket of the laser marking device and continues to extend forward, and the laser marking device is located above the conveyor belt.

[0009] A further technical solution of the present invention is as follows: the roller pressing models I are connected in rows between the end support steel plates I at both ends of the rotating shaft I, and each row of roller pressing models I includes multiple truncated quadrangular dies arranged side by side. The roller pressing models II are connected in rows between the end support steel plates II at both ends of the rotating shaft II, and each row of roller pressing models II includes multiple truncated quadrangular dies arranged side by side. The number of rows of roller pressing models I outside the rotating shaft I is equal to the number of rows of roller pressing models II outside the rotating shaft II. The number of truncated quadrangular dies in each row of roller pressing models I is equal to the number of truncated quadrangular dies in each row of roller pressing models II and they are arranged symmetrically.

[0010] A further technical solution of the present invention is: the front roller assembly and the rear roller assembly are covered with protective covers around and on the upper side, and a feed hopper is connected to the middle of the top wall of the protective cover. A crusher is provided at the rear end of the roller forming machine, and the coal to be crushed by the crusher is conveyed by a conveyor belt extending above the feed hopper.

[0011] A further technical solution of the present invention is as follows: the transmission steering device includes a driving gear, a driven gear, a steering gear I, and a steering gear II. The steering gear I and the steering gear II are the same gear. The driving gear is connected to the left end of the rotating shaft I, and the driven gear is connected to the left end of the rotating shaft II. A rocker arm I is also connected to the outside of the driving gear of the rotating shaft I, and a rocker arm II is connected to the outside of the driven gear of the rotating shaft II. The rocker arm I is hinged to the rocker arm II through a hinge shaft. The steering gear II is connected to the hinge shaft and meshes with the driven gear. The steering gear I is mounted on the rocker arm I and meshes with both the steering gear II and the driving gear.

[0012] A further technical solution of the present invention is: the roller pressing drive assembly is a hydraulic cylinder connected to both sides of the front end of the support frame, and the piston rod of the hydraulic cylinder extends backward and is connected to the front end of the two bearing seats II respectively through a connecting device.

[0013] A further technical solution of the present invention is that the roller pressing drive assembly further includes an accumulator connected to each hydraulic cylinder.

[0014] This invention provides an underground roller-pressed polyhedral coal forming method and green transportation system, which has the following beneficial effects: 1. Integrated underground processing: It integrates crushing, draining, forming, and coding, reducing surface processing steps. Each polyhedral coal particle is coded for product anti-counterfeiting and traceability. 2. This invention compresses crushed and drained coal into polyhedral coal particles. The edges of the polyhedral structure can disperse stress, reducing freeze-thaw sticking force by 80%. Precise diameter control effectively manages dust. 3. Using this method, there is no need to add antifreeze to the coal, saving hundreds of yuan per ton in antifreeze costs and significantly reducing transportation losses. 4. The green transportation system includes a roller pressing machine and a laser coding device. The roller pressing machine can compress crushed and drained coal into polyhedral coal particles. The automatic roll forming machine for water-cooled coal is used to form polyhedral coal particles. A laser marking device is placed above the conveyor belt, and the roll-formed polyhedral coal particles are automatically marked with a laser code during transportation. The entire production process is fully automated and highly efficient. 5. The roll forming machine of the green transportation system rolls out polyhedral coal particles through the joint operation of the front and rear roller assemblies. A roll driving assembly is set at the front end of the rear roller assembly. When roll forming model I and roll forming model II roll against each other, the roll driving assembly pushes the two bearing seats II to move backward, causing roll forming model II to roll backward with roll forming model I to form coal. The high pressure results in polyhedral coal particles with strong adhesion, which are not easy to scatter, have stable quality, and are easy to transport.

[0015] The following description, in conjunction with the accompanying drawings and embodiments, further illustrates the underground roller-pressed polyhedral coal forming method and green transportation system of the present invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of polyhedral coal particles formed by the underground roller pressing polyhedral coal forming method of the present invention; Figure 2 This is a schematic diagram of the structure of an underground roller-pressed polyhedral green coal transportation system according to the present invention; Figure 3 yes Figure 2 A schematic diagram of the roll forming machine after removing the protective cover; Figure 4 yes Figure 3 A magnified view of a portion of the view; Figure 5 yes Figure 3 The image shows a roll forming machine with the protective cover removed from another view. Figure 6 yes Figure 5 A magnified view of a portion of the view; Figure 7 This is a schematic diagram of a crusher installed on the rear side of an underground roller-type polyhedral coal green transportation system according to the present invention. Explanation of reference numerals: 1-Roll forming machine, 2-Laser marking device, 3-Conveyor belt, 4-Protective cover, 5-Feed hopper, 6-Front pressure roller assembly, 7-Rear pressure roller assembly, 8-Roll forming model I, 9-Roll forming model II, 10-Motor, 11-Reducer, 12-Support frame, 13-Pulley I, 14-Belt I, 15-End support steel plate I, 16-Pulley II, 17-Pulley III, 18-Belt II, 19-Bearing seat I, 20-Bearing seat II, 21-End support steel plate II, 22-Accumulator, 23-Hydraulic cylinder, 24-Shaft I, 25-Shaft II, 26-Slider, 27-Slide rail, 28-Rock arm II, 29-Hinge shaft, 30-Rock arm I, 31-Drive gear, 32-Steering gear I, 33-Steering gear II, 34-Driven gear, 35-Crusher. Detailed Implementation

[0017] This invention discloses an underground roller-pressed polyhedral coal forming method, comprising the following steps: (I) Raw coal is fed into a crusher via a belt conveyor for crushing and dewatering. The crushed coal is then screened through a screening device to remove small coal particles, which are then conveyed further. Larger coal lumps are screened out and returned to the crusher for further crushing; (II) Polyhedral coal particles with a diameter of 40.5±0.5mm are formed under a pressure of 50-100MPa using roller pressing. Figure 1 As shown, the polyhedral coal particles have a decahedral structure, which is formed by the bottom faces of two truncated pyramids touching. The decahedral coal particles are formed by pressing two truncated pyramid rollers together. Of course, as a variation of the present invention, the polyhedral coal particles are not limited to decahedrons, but can be other polyhedral structures, such as dodecahedral or tetrahedral structures. The dodecahedral coal particles can be formed by the bottom faces of two pentagonal pyramids touching, and the tetrahedral coal particles can be formed by the bottom faces of two hexagonal pyramids touching. (III) A laser marking device is used to mark the surface of the polyhedral coal particles. The laser marking device is set above the conveyor belt that transports the polyhedral coal particles. During the forward transport of the polyhedral coal particles by the conveyor belt, the laser marking device automatically marks the surface of each polyhedral coal particle with a marking code, and the marked polyhedral coal particles are directly output to the transport system.

[0018] The decahedral coal particles obtained using the method of this invention, after adhesion analysis, showed a freeze-thaw adhesion strength of only 0.4 kN / m². In contrast, the freeze-thaw adhesion strength of traditional coal lumps is 4.2 kN / m², demonstrating a significant reduction in freeze-thaw adhesion strength. This makes them less prone to freezing and sticking during transportation, thus substantially reducing transportation costs.

[0019] like Figure 2As shown, the present invention discloses an underground roll-forming polyhedral coal green transportation system for forming and transporting the aforementioned polyhedral coal particles, comprising a roll forming machine 1 and a laser marking device 2 disposed in front of the roll forming machine 1. The roll forming machine 1 is used to roll out decahedral coal particles, and the laser marking device 2 is used to mark the surface of the decahedral coal particles. Figure 2 The direction indicated by the middle arrow F is forward.

[0020] like Figures 2 to 6 As shown, the roll forming machine 1 includes a support frame 12, a motor 10, a reducer 11, a transmission device, a front roller assembly, a rear roller assembly, and a transmission steering device. The motor 10 and reducer 11 are interconnected and located on the upper rear end of the support frame 12. The motor 10 provides power to the roll forming machine 1. The motor 10 and reducer 11 are existing equipment, and their structure and connection method will not be described in detail here. The front roller assembly 6 and the rear roller assembly 7 are arranged side-by-side on the upper front end of the support frame 12, with the front roller assembly 6 located in front of the rear roller assembly 7.

[0021] like Figures 3 to 6 As shown, the rear pressure roller assembly 7 includes a rotating shaft I24 and a roller pressing model I8 connected to the outside of the rotating shaft I24. End support steel plates I15 are connected to both ends of the rotating shaft I24. The roller pressing models I8 are evenly arranged in a ring matrix outside the rotating shaft I24, and both ends of the roller pressing models I8 are connected to the end support steel plates I15 to form an integral structure. The front pressure roller assembly 6 includes a rotating shaft II25 and a roller pressing model II9 connected to the outside of the rotating shaft II25. End support steel plates II21 are connected to both ends of the rotating shaft II25. The roller pressing models II9 are evenly arranged in a ring matrix outside the rotating shaft II25, and both ends of the roller pressing models II9 are connected to the end support steel plates II21 to form an integral structure. The roller pressing models I8 and II9 are symmetrically arranged. The roller pressing molds I8 are arranged in rows between the end support steel plates I15 at both ends of the rotating shaft I24. Multiple rows of roller pressing molds I8 are arranged around the outer circumference of the rotating shaft I24. Each row of roller pressing molds I8 includes multiple truncated square dies arranged side by side. The roller pressing molds II9 are arranged in rows between the end support steel plates II21 at both ends of the rotating shaft II25. Multiple rows of roller pressing molds II9 are arranged around the outer circumference of the rotating shaft II25. Each row of roller pressing molds II9 includes multiple truncated square dies arranged side by side. The number of rows of roller pressing molds I8 on the outer side of the rotating shaft I24 is equal to the number of rows of roller pressing molds II9 on the outer side of the rotating shaft II25. The number of truncated square dies in each row of roller pressing molds I8 is equal to the number of truncated square dies in each row of roller pressing molds II9 and they are arranged symmetrically.

[0022] like Figure 3 , Figure 4As shown, the two ends of the rotating shaft I24 are supported by a pair of bearing seats I19 fixed on the support frame 12. The rear end of the transmission device is connected to the output end of the reducer 11, and the front end of the transmission device is connected to the right end of the rotating shaft I24. The transmission device includes a belt I14, a pulley I13, and a pulley II16. The output shaft of the reducer 11 is connected to the pulley I13, and the right end of the rotating shaft I24 is connected to the pulley II16. The belt I14 connects between the pulley I13 and the pulley II16. The two ends of the rotating shaft II25 are supported by a pair of bearing seats II20 slidably connected to the support frame 12. The two bearing seats II20 are respectively located on the front side of the two bearing seats I19. The support frame 12 at the bottom of the two bearing seats II20 is provided with a slide rail 27. The upper side of the two ends of the support frame 12 is fixedly connected to the slide rail 27, and the bottom of the two bearing seats II20 is connected to a slider 26 that cooperates with the slide rail 27. The slider 26 can move the bearing seat II20 on it back and forth relative to the slide rail 27. A forward-extending conveyor belt 3 is provided between the support frames 12 on the lower side of the front pressure roller assembly 6 and the rear pressure roller assembly 7. A drive shaft for the conveyor belt 3 is located on the support frame 12 on the lower side of the rotating shaft I 24. A pulley III 17 is connected to the right end of the drive shaft, and a double pulley II 16 is connected to the right end of the rotating shaft I 24. A belt II 18 connects pulley II 16 and pulley III 17. The motor 10 outputs power through the rotating shaft I 24 to simultaneously power the roller pressing and the conveyor belt 3. A laser marking device 2 is installed at the front end of the roller pressing machine 1. The conveyor belt 3 extends forward, passes through the mounting bracket of the laser marking device 2, and continues forward. The laser marking device 2 is located above the conveyor belt 3. The laser marking device 2, mounted on the mounting bracket, can automatically mark polyhedral coal particles passing under it. The laser marking device 2 is existing equipment, and its structure will not be described in detail here.

[0023] like Figure 5 , Figure 6As shown, the transmission steering device is connected between the left end of shaft I 24 and the left end of shaft II 25, and the transmission steering device keeps shaft I 24 and shaft II 25 rotating in opposite directions. The transmission steering device includes a driving gear 31, a driven gear 34, and steering gears I 32 and II 33. Steering gears I 32 and II 33 are the same gear. The driving gear 31 is connected to the left end of shaft I 24, and the driven gear 34 is connected to the left end of shaft II 25. A rocker arm I 30 is also connected to the outside of the driving gear 31 of shaft I 24, and a rocker arm II 28 is connected to the outside of the driven gear 34 of shaft II 25. The rocker arm I 30 is hinged to the rocker arm II 28 through a hinge shaft 29. The steering gear II 33 is connected to the hinge shaft 29 and meshes with the driven gear 34. The steering gear I 32 is mounted on the rocker arm I 30 and meshes with both the steering gear II 33 and the driving gear 31. Rocker arm I 30 and rocker arm II 28 can swing relative to hinge shaft 29, so that when the two bearing seats II 20 move back and forth with rotating shaft II 25, steering gear I 32 and steering gear II 33 are always engaged with driving gear 31 and driven gear 34, maintaining the continuity of power transmission.

[0024] like Figures 3 to 6 As shown, a roller pressing drive assembly is provided at the front end of the support frame 12, which can push the two bearing seats II 20 to move backward on the slide rail 27. The roller pressing drive assembly can push the two bearing seats II 20 to move backward, so that the roller pressing model II 9 presses against the roller pressing model I 8 and maintains the pressure for one pressing cycle, thus extruding the coal located between the roller pressing model II 9 and the roller pressing model I 8 into polyhedral coal particles. One pressing cycle refers to the time required for the roller pressing model II 9 and the roller pressing model I 8 to press a set of polyhedral coal particles, which can vary depending on the size of the polyhedral coal particles. In this embodiment, pressing a set of polyhedral coal particles requires 5 to 10 seconds. In this embodiment, the roller pressing drive assembly consists of hydraulic cylinders 23 connected to both sides of the front end of the support frame 12. The piston rods of the hydraulic cylinders 23 extend backward and are connected to the front ends of the two bearing seats II 20 through connecting devices. The operation of the hydraulic cylinders 23 can push the sliders 26 at the bottom of the two bearing seats II 20 to slide back and forth relative to the slide rail 27. The roller pressing drive assembly also includes an accumulator 22 connected to each hydraulic cylinder 23. Hydraulic cylinder 23 is connected to accumulator 22. When roller pressing model II9 presses against roller pressing model I8, it can maintain stable pressure and reduce vibration, ensuring that the crushed coal can be quickly compressed into decahedral coal particles.

[0025] like Figure 2 and Figure 7As shown, the front and rear roller assemblies are covered by protective covers 4 around and on the top. A feed hopper 5 is connected to the middle of the top wall of the protective cover 4. A crusher 35 is provided at the rear end of the roller forming machine 1. The coal crushed by the crusher 35 is conveyed by a conveyor belt 3 extending above the feed hopper 5. The crushed coal crushed by the crusher 35 is conveyed forward by the conveyor belt 3 and enters the gap between the roller forming molds I8 and II9 of the roller forming machine 1 through the feed hopper 5. The relative movement of the rotating shaft I24 and the rotating shaft II25 squeezes the crushed coal between the roller forming molds I8 and II9. When a row of roller forming molds II9 is ​​aligned with a row of roller forming molds I8, the hydraulic cylinder 23 is controlled to drive the two bearing seats II20 to press the roller forming molds I8 backward with the roller forming molds II9 and maintain the pressure for one forming cycle (5 to 10 seconds) to jointly squeeze the crushed coal located between the roller forming molds II9 and I8 into decahedral coal particles. After one molding cycle, the hydraulic cylinder 23 is depressurized, and the rotating shafts I 24 and II 25 continue to rotate. The formed deca-sided coal particles fall onto the conveyor belt 3 and are conveyed forward. The next row of roller pressing molds I 8 and II 9 then press the next row of deca-sided coal particles. The laser marking device 2 marks the surface of the deca-sided coal particles on the conveyor belt 3 with a code, after which the deca-sided coal particles can be stored or transported directly.

[0026] The above embodiments are merely preferred embodiments of the present invention. The structure of the present invention is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method of forming coal briquettes by roll-pressing in a mine, characterized by, It comprises the following steps: (1) crushing and draining water of raw coal by a belt input crusher; (2) rolling forming into polyhedral coal particles with a diameter of 40.5±0.5mm under a pressure of 50-100MPa; (3) marking codes on the surface of the polyhedral coal particles by a laser marking device, and directly outputting the polyhedral coal particles with marked codes to a transportation system.

2. The downhole roll-pressing type of polyhedral coal forming method according to claim 1, characterized by, The polyhedral coal particles are a dodecahedron structure formed by butting the lower bottom faces of two quadrangular prisms.

3. An in-situ roll-pressed polyhedral coal green transportation system for shaping and transporting the polyhedral coal particles of any one of claims 1-2, wherein, The utility model provides a kind of roll forming machine (1) and the laser coding device (2) of setting in roll forming machine (1) front side, roll forming machine (1) includes support frame (12), motor (10), speed reducer (11), transmission device, front roller assembly, rear roller assembly and transmission steering device, motor (10) is connected with speed reducer (11) each other and is set on support frame (12) rear end upper side, front pressure roller assembly (6) and rear pressure roller assembly (7) are side by side set in support frame (12) front end upper side, rear pressure roller assembly (7) includes shaft I (24) and be connected in the roll forming model I (8) of shaft I (24) outer side, shaft I (24) is connected with end support steel sheet I (15) respectively by two end positions, roll forming model I (8) is evenly arranged in the ring matrix mode in the outer side of shaft I (24), and roll forming model I (8) two ends are connected with end support steel sheet I (15) respectively to form integral structure, and front pressure roller assembly (6) includes shaft II (25) and be connected in the roll forming model II (9) of shaft II (25) outer side, shaft II (25) is connected with end support steel sheet II (21) respectively by two end positions, roll forming model II (9) is evenly arranged in the ring matrix mode in the outer side of shaft II (25), and roll forming model II (9) two ends are connected with end support steel sheet II (21) respectively to form integral structure, and roll forming model I (8) and roll forming model II (9) are symmetrically arranged, shaft I (24) two ends are supported by a pair of bearing seat I (19) fixed on support frame (12), transmission device rear end is connected with the output end of speed reducer (11), transmission device front end is connected with the right end of shaft I (24), shaft II (25) two ends are supported by a pair of bearing seat II (20) slidingly connected on support frame (12), two bearing seat II (20) are respectively set in the front side of two bearing seat I (19), and the support frame (12) is provided with slide rail (27) on the bottom end of two bearing seat II (20), and the bottom end of two bearing seat II (20) is respectively connected with the sliding block (26) matched with slide rail (27), transmission steering device is connected between the left end of shaft I (24) and the left end of shaft II (25), and shaft I (24) and shaft II (25) keep reverse rotation by transmission steering device, and roll forming drive assembly is arranged on the front end of support frame (12), and two bearing seat II (20) can be pushed to move backward on slide rail (27), and roll forming drive assembly can push two bearing seat II (20) to move backward to make roll forming model II (9) press roll forming model I (8) and make pressure keep a pressure cycle to extrude coal between roll forming model II (9) and roll forming model I (8) into polyhedral coal particle.

4. The downhole roll-pressed polyhedral coal green transportation system according to claim 1, characterized in that, The transmission device comprises a belt I (14), a pulley I (13) and a pulley II (16), the output shaft of a speed reducer (11) is connected with the pulley I (13), the right end of a rotating shaft I (24) is connected with the pulley II (16), the belt I (14) is connected between the pulley I (13) and the pulley II (16), a support frame (12) below the front roller assembly (6) and the rear roller assembly (7) is provided with a forwardly extending conveyor belt (3), a conveyor belt driving rotating shaft is arranged on the support frame (12) below the rotating shaft I (24), the right end of the conveyor belt driving rotating shaft is connected with a pulley III (17), the pulley II (16) connected with the right end of the rotating shaft I (24) is a double pulley, and the pulley II (16) and the pulley III (17) are connected with a belt II (18).

5. The downhole roll-pressed polyhedral coal green transportation system according to claim 4, characterized in that, The laser coding device (2) is installed at the front end of the roller forming machine (1), the conveyor belt (3) extends forwardly through the installation support of the laser coding device (2) and then continues to extend forwardly, and the laser coding device (2) is located above the conveyor belt (3).

6. The downhole roll-pressed polyhedral coal green transportation system according to claim 1, characterized in that, The roller models I (8) are connected between end support steel plates I (15) at both ends of the rotating shaft I (24) in rows, each row of the roller models I (8) comprises a plurality of four-prism concave dies arranged side by side, the roller models II (9) are connected between end support steel plates II (21) at both ends of the rotating shaft II (25) in rows, each row of the roller models II (9) comprises a plurality of four-prism concave dies arranged side by side, the number of rows of the roller models I (8) outside the rotating shaft I (24) is equal to the number of rows of the roller models II (9) outside the rotating shaft II (25), and the number of four-prism concave dies in each row of the roller models I (8) is equal to the number of four-prism concave dies in each row of the roller models II (9) and is symmetrically arranged.

7. The downhole roll-pressed polyhedral coal green transportation system according to claim 6, characterized in that, The front roller assembly and the rear roller assembly are covered with protective covers (4) around and on the top side, a feeding hopper (5) is connected to the middle of the top wall of the protective cover (4), a crusher (35) is arranged at the rear end of the roller forming machine (1), and the coal crushed by the crusher (35) is the coal extended to above the feeding hopper (5) by the conveyor belt (3).

8. The downhole roll-pressed polyhedral coal green transportation system according to claim 1, characterized in that, The transmission and steering device comprises a driving gear (31), a driven gear (34) and a steering gear I (32) and a steering gear II (33), the steering gear I (32) and the steering gear II (33) are identical gears, the driving gear (31) is connected to the left end of the rotating shaft I (24), the driven gear (34) is connected to the left end of the rotating shaft II (25), the driving gear (31) outside the rotating shaft I (24) is further connected with a rocker I (30), the driven gear (34) outside the rotating shaft II (25) is connected with a rocker II (28), the rocker I (30) is hinged to the rocker II (28) through a hinge shaft (29), the steering gear II (33) is connected to the hinge shaft (29) and engaged with the driven gear (34), and the steering gear I (32) is installed on the rocker I (30) and engaged with the steering gear II (33) and the driving gear (31) at the same time.

9. The downhole roll-pressed polyhedral coal green transportation system according to claim 1, characterized in that, The roller pressing driving assembly is a hydraulic cylinder (23) connected to the two sides of the front end of the support frame (12) respectively, and the piston rod of the hydraulic cylinder (23) extends rearward and is connected with the front end of the bearing seat II (20) through a connecting device respectively.

10. The downhole roll-pressed polyhedral coal green transportation system according to claim 9, characterized in that, The roller pressing driving assembly further comprises an accumulator (22) connected with each hydraulic cylinder (23).

Images