An open-pit mining machine

Abstract

The present invention relates to an open-pit mining machine, belonging to the technical field of mining machines. It includes a mining machine body, a cutting drum, a scraper plate, a scraper conveyor and a belt conveyor. Two groups of front crawlers are respectively fixedly connected to the front side of the mining machine body through two groups of front drive frames. The cutting drum is rotatably connected to the lower end of the front side of the mining machine body. An engine compartment is fixedly connected to the front side of the mining machine body and above the cutting drum. By setting the combination of mechanical fixing parts and permanent magnet magnetic seats, the present invention adopts a double fixing method of mechanical and non-mechanical to firmly fix the pick cutter. This fixing method not only avoids the common wear and loosening problems in traditional mechanisms, but also overcomes the possible failure risks of non-mechanical fixing methods, thus comprehensively improving the stability of the pick cutter. By setting a crushing device, the situation of uneven ore particle size is effectively solved, which is convenient for the subsequent processing of ore materials.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machines, and particularly to an open-pit mining machine. Background Art

[0002] Under the background of the rapid development of the global economy and the continuous growth of the population, the demand for mineral resources is increasing day by day. As one of the main forms of mineral resource exploitation, the exploitation efficiency, safety and environmental impact of large open-pit mines have become the focus of the industry. With the continuous progress of technology, mining technologies are also constantly innovating to meet the growing demand and complex mining environments.

[0003] In open-pit mining, as one of the common mining equipment, the drum mining machine has become the core technical equipment for improving the ore mining efficiency, reducing labor costs and enhancing safety through its efficient mechanized operation. The working principle of this equipment is based on advanced excavation technologies and intelligent control systems, and it can efficiently carry out operations on large-section mining faces. The drum mining machine cuts and breaks the ore layer through a rotating cutting drum. As the drum continuously rotates and the mining machine advances, the ore is gradually broken and automatically falls into the built-in transportation system of the mining machine, and after subsequent processing, the ore is transported to the ground or a designated ore storage point.

[0004] However, with the long-term high-intensity operation of the drum mining machine, the cutting teeth on the cutting drum will show wear, which will directly affect the working efficiency of the equipment and the mining quality of the ore. Since the cutting teeth and the tool mounting seat are usually fixed and connected by threads or clamping mechanisms, the disassembly and replacement process of the cutting teeth is often cumbersome, which not only increases the time cost of equipment maintenance but also raises the complexity of manual operation. In addition, due to the wear between the cutting teeth and the tool mounting seat during long-term operation, the connection between the cutting teeth and the tool mounting seat may become loose, resulting in a decline in the stability and working efficiency of the cutting teeth, thus affecting the overall working performance of the mining machine and increasing the risk of equipment failure. At the same time, during the ore layer cutting process of the drum mining machine, the problem of uneven ore particle size often occurs. This not only affects the subsequent processing of the ore but also may impose a burden on the ore transportation system. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides an open-pit mining machine. The technical solution of the present invention is as follows:

[0006] An open-pit mining machine, comprising a mining machine body, a cutting drum, a scraper plate, a scraper conveyor and a belt conveyor. Two groups of front crawlers are respectively fixedly connected to the front side of the mining machine body through two groups of front drive frames. The cutting drum is rotatably connected to the lower end of the front side of the mining machine body. An engine compartment is fixedly connected to the front side of the mining machine body and above the cutting drum. An engine for driving the cutting drum to rotate is arranged in the engine compartment. The scraper plate is fixedly connected to the lower end of the mining machine body and behind the cutting drum. Two groups of star wheels are symmetrically arranged on the scraper plate. The scraper conveyor is fixedly connected to the rear of the scraper plate. Two groups of rear crawlers are respectively fixedly connected to the middle lower part of the mining machine body through two groups of rear drive frames. The belt conveyor is fixedly connected to the rear end of the mining machine body, and the feeding port of the belt conveyor is directly below the discharging port of the scraper conveyor. A drum shaft is fixedly connected to the center of the cutting drum, and the drum shaft is connected to the engine;

[0007] A plurality of groups of bases are fixedly connected to the outer side of the cutting drum. A tool mounting seat is fixedly connected to the upper end of the base. A tool mounting groove is formed on the surface of the tool mounting seat. A pick cutter is detachably connected to the inside of the tool mounting groove through a mechanical fixing member. A permanent magnetic seat for magnetically attracting the pick cutter is fixedly connected to the inside of the tool mounting groove and below the pick cutter;

[0008] A crushing device for crushing ore is connected to the upper end of the feeding port of the belt conveyor and below the discharging port of the scraper conveyor.

[0009] Optionally, the crushing device includes a crushing box and a blanking frame. The upper surface, lower surface and rear side of the crushing box are all open. The upper surface opening of the crushing box is inclined forward. The lower surface opening of the crushing box is directly above the feeding port of the belt conveyor. A longitudinally arranged partition is fixedly connected to the middle inside of the crushing box. The front side of the partition inside the crushing box is a crushing chamber, and the rear side of the partition inside the crushing box is a blanking chamber. A discharging groove is formed at the lower end of the partition. The blanking frame is fixedly connected to the upper surface opening of the crushing box. A first blanking port is arranged inside the front side of the blanking frame and above the crushing chamber. A second blanking port is arranged inside the rear side of the blanking frame and above the blanking chamber. The second blanking port is directly below the discharging port of the scraper conveyor. A crushing member is connected to the inside of the crushing chamber. A sieve plate inclined forward is slidably connected to the inside of the second blanking port. A driving member for driving the sieve plate to reciprocate is connected to the rear side of the blanking frame.

[0010] Optionally, two sets of side holes are perforated through both the left and right sides of the tool mounting seat, and the side holes communicate with the tool mounting groove. A upper fixing disc is fixedly connected to the lower surface of the pick tool, a middle fixing disc is fixedly connected to the lower surface of the upper fixing disc. The diameter of the upper fixing disc is larger than that of the middle fixing disc. A lower fixing disc is fixedly connected to the lower surface of the middle fixing disc, and the diameter of the lower fixing disc is the same as that of the upper fixing disc. A limiting circular groove is formed by the lower surface of the upper fixing disc, the outer side of the middle fixing disc and the upper surface of the lower fixing disc. The upper fixing disc, the middle fixing disc and the lower fixing disc are all located inside the tool mounting groove. The mechanical fixing member includes two fixing pins. The two fixing pins sequentially penetrate through the two side holes on the left side, the limiting circular groove and the two side holes on the right side. A threaded hole is formed on the right side of the fixing pin, and a fixing bolt for restricting the movement of the fixing pin is threadedly connected inside the threaded hole.

[0011] Optionally, a plurality of positioning grooves are annularly and equidistantly formed on the outer side of the tool mounting groove, and a plurality of positioning blocks matching the positioning grooves are fixedly arranged annularly and equidistantly on the outer side of the upper fixing disc.

[0012] Optionally, the lower surface of the lower fixing disc is attracted to the permanent magnetic seat.

[0013] Optionally, a back hole is formed at the rear side of the tool mounting seat, and the back hole communicates with the tool mounting groove. A control hole is formed at the rear side of the permanent magnetic seat. A control column for controlling the magnetic state of the permanent magnetic seat is rotatably connected inside the back hole. A connecting pin inserted into the control hole is fixedly connected to one side of the control column close to the permanent magnetic seat.

[0014] Optionally, a diversion plate is fixedly connected to the rear side wall of the partition plate, and the diversion plate is inclined.

[0015] Optionally, the crushing member includes two crushing rollers and a first motor. The two crushing rollers are respectively rotatably connected to the front and rear sides inside the crushing chamber. The right ends of the shafts of the two crushing rollers penetrate through the crushing box and are fixedly sleeved with gears. The two gears are meshed with each other. The output shaft end of the first motor is fixedly connected to the center of the gear located at the front side. A first protective cover for protecting the gears and the first motor is fixedly connected to one side of the crushing box.

[0016] Optionally, slide rails are symmetrically fixedly arranged on the left and right sides of the second discharge port. A portal frame is fixedly connected to the outer side of the sieve plate. The opening of the portal frame faces forward. A plurality of rollers are rotatably connected to both the left and right sides of the portal frame, and the rollers are slidably connected inside the slide rails.

[0017] Optionally, the driving member includes a second protective cover with an opening at the front side. The second protective cover is fixedly connected to the rear side of the blanking frame. A second motor is fixedly connected inside the second protective cover. A disc is fixedly sleeved on the output shaft end of the second motor. One edge of the disc is rotationally connected to a connecting rod through a pin shaft. One end of the connecting rod away from the disc is rotationally connected to an ear seat through a pin shaft. One side of the ear seat away from the connecting rod is fixedly connected to a moving rod. One end of the moving rod away from the ear seat is fixedly connected to the rear side of the portal frame. An activity groove is penetratingly opened at the lower end of the rear side of the blanking frame. The moving rod is slidably connected inside the activity groove.

[0018] All the above optional technical solutions can be arbitrarily combined, and the present invention does not elaborate on the structures after combination one by one.

[0019] With the above solutions, the beneficial effects of the present invention are as follows:

[0020] 1. By setting the combination of mechanical fixing parts and permanent magnet magnetic seats, the present invention adopts a dual fixing method of mechanical and non-mechanical to firmly fix the pick cutter. This fixing method not only avoids the common wear and loosening problems in traditional mechanisms but also overcomes the potential failure risks of non-mechanical fixing methods, thus comprehensively improving the stability of the pick cutter. The permanent magnet magnetic seat can firmly adsorb the pick cutter through strong magnetic force, preventing it from rubbing or wearing against the tool mounting seat during long-term operation, thus avoiding loosening and ensuring the efficient operation and long-term stability of the pick cutter. At the same time, the mechanical fixing parts provide a secondary fixing guarantee for the pick cutter, further eliminating the potential risk of magnetic failure of the permanent magnet magnetic seat and ensuring the safety and reliability of the pick cutter during operation. In addition, when disassembling and replacing the pick cutter, only need to take out the mechanical fixing parts and then manually operate the permanent magnet magnetic seat to release the magnetic attraction force, then the disassembly of the pick cutter can be easily completed, greatly shortening the time of the replacement process, improving the operation efficiency, and reducing the time cost of equipment shutdown and maintenance.

[0021] 2. By setting the crushing device, the scraper conveyor transports the ore to the crushing device. After being crushed by the crushing device, it is then transported by the belt conveyor, solving the problem of uneven particle size of the ore and facilitating the subsequent processing of the ore.

[0022] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present invention and describes them in detail with the accompanying drawings as follows. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall external structure of the open-pit mining machine provided by the present invention;

[0024] Figure 2Right view of the open-pit mining machine provided by the present invention;

[0025] Figure 3 Bottom view of the open-pit mining machine provided by the present invention;

[0026] Figure 4 Schematic structural diagram of the cutting drum in the present invention;

[0027] Figure 5 Schematic structural diagram of the cooperation of the base, tool mounting seat, pick tool, mechanical fixing part and control column in the present invention;

[0028] Figure 6 is Figure 5 left sectional view of;

[0029] Figure 7 Sectional view of the cooperation of the tool mounting seat, middle fixing disc, lower fixing disc and mechanical fixing part in the present invention;

[0030] Figure 8 Sectional view of the tool mounting seat in the present invention;

[0031] Figure 9 Exploded structural schematic diagram of the base, tool mounting seat, pick tool and mechanical fixing part in the present invention;

[0032] Figure 10 Exploded structural schematic diagram of the base, tool mounting seat, permanent magnetic seat and control column in the present invention;

[0033] Figure 11 Schematic structural diagram of the cooperation of the scraper plate, scraper conveyor, belt conveyor and crushing device in the present invention;

[0034] Figure 12 Right sectional view of the cooperation of the belt conveyor and the crushing device in the present invention;

[0035] Figure 13 Schematic structural diagram of the crushing device in the present invention;

[0036] Figure 14 Exploded structural schematic of the crushing device in the present invention Figure One ;

[0037] Figure 15 Exploded structural schematic of the crushing device in the present invention Figure Two .

[0038] Reference numerals in the figures: 1, mining machine body; 2, front drive frame; 21, front crawler; 3, cutting drum; 31, drum shaft; 32, base; 33, tool mounting seat; 331, tool mounting groove; 332, back hole; 333, side hole; 334, positioning groove; 34, pick cutter; 341, upper fixing disc; 3411, positioning block; 342, middle fixing disc; 3421, limiting circular groove; 343, lower fixing disc; 35, mechanical fixing part; 351, fixing pin; 3511, threaded hole; 352, fixing bolt; 36, permanent magnet magnetic seat; 361, operating hole; 37, operating column; 371, connecting pin; 4, engine compartment; 5, scraper plate; 51, star wheel; 6, scraper conveyor; 7, rear drive frame; 71, rear crawler; 8, belt conveyor; 9, crushing device; 91, crushing box; 911, partition; 9111, crushing bin; 9112, blanking bin; 9113, deflector; 9114, discharge chute; 92, blanking frame; 921, first blanking port; 922, second blanking port; 923, slide rail; 924, movable groove; 93, crushing part; 931, crushing roll; 932, gear; 933, first motor; 934, first protective cover; 94, sieve plate; 941, portal frame; 9411, roller; 95, driving part; 951, second protective cover; 952, second motor; 953, disc; 954, connecting rod; 955, ear seat; 956, moving rod. Detailed implementation manners

[0039] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0040] Please refer to Figures 1 - 15 , the present invention provides an open-pit mining machine, including a mining machine body 1, a cutting drum 3, a scraper plate 5, a scraper conveyor 6 and a belt conveyor 8. The front side of the mining machine body 1 is fixedly connected with two groups of front crawlers 21 through two groups of front drive frames 2 respectively. The cutting drum 3 is rotatably connected to the lower end of the front side of the mining machine body 1. An engine compartment 4 is fixedly connected above the cutting drum 3 on the front side of the mining machine body 1. The engine compartment 4 is internally provided with an engine for driving the cutting drum 3 to rotate. The scraper plate 5 is fixedly connected to the lower end of the mining machine body 1 and is located behind the cutting drum 3. Two groups of star wheels 51 are symmetrically arranged on the scraper plate 5. The scraper conveyor 6 is fixedly connected behind the scraper plate 5. The middle lower part of the mining machine body 1 is fixedly connected with two groups of rear crawlers 71 through two groups of rear drive frames 7 respectively. The belt conveyor 8 is fixedly connected to the rear end of the mining machine body 1, and the feeding port of the belt conveyor 8 is located directly below the discharging port of the scraper conveyor 6. The center of the cutting drum 3 is fixedly connected with a drum shaft 31, and the drum shaft 31 is connected to the engine;

[0041] A plurality of groups of bases 32 are fixedly connected to the outer side of the cutting drum 3. The upper end of the base 32 is fixedly connected with a tool mounting seat 33. A tool mounting groove 331 is formed on the surface of the tool mounting seat 33. A cutting tool 34 is detachably connected to the inside of the tool mounting groove 331 through a mechanical fixing member 35. A permanent magnet magnetic seat 36 for magnetically attracting the cutting tool 34 is fixedly connected to the inside of the tool mounting groove 331 and below the cutting tool 34.

[0042] At the upper end of the feeding port of the belt conveyor 8 and at the lower end of the discharging port of the scraper conveyor 6, a crushing device 9 for crushing ore is connected.

[0043] Specifically, the drum shaft 31 is connected to the engine. Belt pulleys are fixedly sleeved on the outer sides of one end of the drum shaft 31 and the output shaft of the engine respectively, and the two belt pulleys are connected by a belt, so as to realize the driving of the drum shaft 31 to rotate by the engine.

[0044] By setting the combination of the mechanical fixing member 35 and the permanent magnet magnetic seat 36, the present invention adopts a dual fixing method of mechanical and non - mechanical to firmly fix the cutting tool 34. This fixing method not only avoids the common problems of wear and looseness in traditional mechanisms, but also overcomes the potential failure risks of non - mechanical fixing methods, thus comprehensively improving the stability of the cutting tool 34. The permanent magnet magnetic seat 36 can firmly adsorb the cutting tool 34 through strong magnetic force, preventing it from rubbing or wearing against the tool mounting seat 33 during long - term operation, thus avoiding loosening and ensuring the efficient operation and long - term stability of the cutting tool 34. At the same time, the mechanical fixing member 35 provides a secondary fixing guarantee for the cutting tool 34, further eliminating the potential risk of magnetic failure of the permanent magnet magnetic seat 36 and ensuring the safety and reliability of the cutting tool 34 during operation. In addition, when disassembling and replacing the cutting tool 34, only need to take out the mechanical fixing member 35, and then manually operate the permanent magnet magnetic seat 36 to release the magnetic attraction, then the disassembly of the cutting tool 34 can be easily completed, greatly shortening the time of the replacement process, improving the operation efficiency, and reducing the time cost of equipment shutdown and maintenance.

[0045] The permanent magnet magnetic seat 36 in the embodiment of the present invention is a device that can generate a strong magnetic field by using a permanent magnet in the prior art and can magnetically adsorb and fix the cutting tool 34. Specifically, the shell of the permanent magnet magnetic seat 36 is composed of two magnetic conductors separated by a non - magnetic copper plate in the middle. There is a rotatable permanent magnet inside, and the permanent magnet is N and S poles along the diameter direction. By rotating the internal permanent magnet, the magnetic circuit direction can be changed, so as to switch the magnetic state of the permanent magnet magnetic seat 36 and realize the adsorption and release of the cutting tool 34.

[0046] By setting up the crushing device 9, the scraper conveyor 6 transports the ore to the crushing device 9. After being crushed by the crushing device 9, it is then transported by the belt conveyor 8, which solves the problem of uneven particle size of the ore and facilitates the subsequent processing of the ore.

[0047] Furthermore, the crushing device 9 includes a crushing box 91 and a blanking frame 92. The upper surface, lower surface and rear side of the crushing box 91 are all open. The opening on the upper surface of the crushing box 91 is inclined forward. The opening on the lower surface of the crushing box 91 is directly above the feeding port of the belt conveyor 8. A longitudinally arranged partition plate 911 is fixedly connected in the middle of the interior of the crushing box 91. The front side of the interior of the crushing box 91 and located behind the partition plate 911 is the crushing chamber 9111, and the rear side of the interior of the crushing box 91 and located behind the partition plate 911 is the blanking chamber 9112. A discharge chute 9114 is opened at the lower end of the partition plate 911. The blanking frame 92 is fixedly connected to the opening on the upper surface of the crushing box 91. A first blanking port 921 is provided on the front side of the interior of the blanking frame 92 and above the crushing chamber 9111. A second blanking port 922 is provided on the rear side of the interior of the blanking frame 92 and above the blanking chamber 9112. The second blanking port 922 is directly below the discharge port of the scraper conveyor 6. A crushing member 93 is connected inside the crushing chamber 9111. A sieve plate 94 inclined forward is slidably connected inside the second blanking port 922. A driving member 95 for driving the sieve plate 94 to reciprocate is connected to the rear side of the blanking frame 92.

[0048] Specifically, the scraper conveyor 6 transports the excavated ore to the upper end of the crushing box 91 and drops it onto the sieve plate 94. The sieve plate 94 reciprocates under the action of the driving member 95. During the reciprocating screening process, the particle size of the ore can be effectively screened. During this process, the ore that meets the particle size of the sieve plate 94 will directly fall into the belt conveyor 8 through the blanking chamber 9112 for transportation, while the ore that does not meet the particle size of the sieve plate 94 will slide along the inclined direction of the sieve plate 94 to the first blanking port 921 under the reciprocating screening action of the sieve plate 94 and finally fall into the crushing chamber 9111 and be crushed by the crushing member 93. The crushed ore drops onto the belt conveyor 8 and continues to be transported, thus solving the problem of uneven particle size of the ore and facilitating the subsequent processing of the ore. In addition, through the pre-screening effect of the sieve plate 94, the ore has been effectively separated before entering the crushing chamber 9111. The ore that meets the particle size requirements will be directly diverted, greatly reducing the load on the crushing chamber 9111 and the bearing pressure on the crushing member 93. At the same time, the pre-screened qualified ore also reduces the wear on the crushing member 93 and avoids unnecessary secondary crushing.

[0049] Furthermore, two sets of side holes 333 are penetrated and provided on both the left and right sides of the tool mounting seat 33, and the side holes 333 communicate with the tool mounting groove 331. A upper fixing disc 341 is fixedly connected to the lower surface of the pick cutter 34. A middle fixing disc 342 is fixedly connected to the lower surface of the upper fixing disc 341. The diameter of the upper fixing disc 341 is larger than that of the middle fixing disc 342. A lower fixing disc 343 is fixedly connected to the lower surface of the middle fixing disc 342. The diameter of the lower fixing disc 343 is the same as that of the upper fixing disc 341. A limiting circular groove 3421 is formed on the lower surface of the upper fixing disc 341, the outer side of the middle fixing disc 342 and the upper surface of the lower fixing disc 343. The upper fixing disc 341, the middle fixing disc 342 and the lower fixing disc 343 are all located inside the tool mounting groove 331. The mechanical fixing member 35 includes two fixing pins 351. The two fixing pins 351 sequentially penetrate through the two sets of side holes 333 on the left side, the limiting circular groove 3421 and the two sets of side holes 333 on the right side. A threaded hole 3511 is provided on the right side of the fixing pin 351. A fixing bolt 352 for restricting the movement of the fixing pin 351 is threadedly connected inside the threaded hole 3511.

[0050] Specifically, when disassembling the mechanical fixing member 35 of the pick cutter 34, only need to screw out the fixing bolt 352 from the threaded hole 3511 and then take out the fixing pin 351 from the side hole 333, then the pick cutter 34 will lose the mechanical locking from the mechanical fixing member 35, and the operation is simple and convenient. When reinstalling the pick cutter 34, only need to insert the lower fixing disc 343, the middle fixing disc 342 and the upper fixing disc 341 into the tool mounting groove 331, and then insert the two fixing pins 351 from the two sets of side holes 333 on the left side of the tool mounting seat 33, sequentially pass through the limiting circular groove 3421, and finally penetrate into the two sets of side holes 333 on the right side of the tool mounting seat 33. At this time, the pick cutter 34 is position-limited by the fixing pin 351. Finally, screw the fixing bolt 352 from the two sets of side holes 333 on the right side of the tool mounting seat 33 into the threaded hole 3511 of the fixing pin 351 to fix the fixing pin 351. This design not only simplifies the installation and disassembly process of the pick cutter 34, but also effectively improves the stability and safety of the pick cutter 34.

[0051] Furthermore, a plurality of positioning grooves 334 are annularly and equidistantly provided on the outer side of the tool mounting groove 331. A plurality of positioning blocks 3411 that are matched with the positioning grooves 334 are fixedly provided annularly and equidistantly on the outer side of the upper fixing disc 341.

[0052] Specifically, when installing the pick cutter 34, only need to align the positioning block 3411 with the positioning groove 334 and insert it to achieve rapid and accurate positioning, thus greatly improving the installation efficiency and simplifying the installation process.

[0053] Furthermore, the lower surface of the lower fixing disc 343 is attracted to the permanent magnetic seat 36.

[0054] Specifically, the permanent magnet magnetic base 36 fixes the lower fixed disc 343 by magnetic attraction, avoiding the wear and looseness that occur in the traditional fixing mechanism during long-term use.

[0055] Furthermore, a back hole 332 is formed at the rear side of the tool mounting seat 33. The back hole 332 communicates with the tool mounting groove 331. A control hole 361 is formed at the rear side of the permanent magnet magnetic base 36. A control column 37 for controlling the magnetic state of the permanent magnet magnetic base 36 is rotatably connected inside the back hole 332. A connecting pin 371 inserted inside the control hole 361 is fixedly connected to one side of the control column 37 close to the permanent magnet magnetic base 36.

[0056] Specifically, the control hole 361 is formed on the side of the permanent magnet inside the permanent magnet magnetic base 36. By rotating the control column 37, the permanent magnet inside the permanent magnet magnetic base 36 can be driven to rotate, thereby conveniently controlling the magnetic state of the permanent magnet magnetic base 36, enabling it to quickly possess or release magnetic attraction, and thus realizing the quick installation and disassembly of the pick cutter 34, greatly improving the installation and disassembly efficiency of the pick cutter 34.

[0057] Specifically, when it is necessary to magnetically fix the pick cutter 34, manually rotate the control column 37. The control column 37 drives the permanent magnet inside the permanent magnet magnetic base 36 to rotate through the connecting pin 371. When the magnetic poles (N / S) of the permanent magnet face the two magnetic conductors respectively, the magnetic lines of force form a closed loop. At this time, the magnetic lines of force will flow from the N pole of the permanent magnet to the S pole and form an effective magnetic field through the guidance of the magnetic conductor, so that the permanent magnet magnetic base 36 generates magnetic attraction to realize the magnetic fixation of the pick cutter 34. When it is necessary to release the magnetic fixation of the pick cutter 34, rotate the control column 37 in the opposite direction. The control column 37 drives the permanent magnet to rotate in the opposite direction, causing the magnetic field distribution to change. At this time, the magnetic attraction of the permanent magnet magnetic base 36 decreases, and the magnetic fixation of the pick cutter 34 can be released.

[0058] Furthermore, a diversion plate 9113 is fixedly connected to the rear side wall of the partition plate 911. The diversion plate 9113 is inclined.

[0059] Specifically, the ore materials that meet the particle size screened by the sieve plate 94 will be diverted by the diversion plate 9113 and fall onto the belt conveyor 8, thereby slowing down the falling speed of the ore materials and preventing the situation that the ore materials damage the belt conveyor 8 due to violent falling. At the same time, it avoids the ore materials in the blanking bin 9112 from falling above the discharge chute 9114. Since the discharge chute 9114 is the only outlet of the crushing bin 9111, if a large amount of ore materials fall and accumulate at the discharge chute 9114, it will not only cause the ore materials to accumulate inside the crushing bin 9111, but may also seriously affect the crushing parts 93 of the crushing bin 9111, and even may lead to transportation stagnation, thus affecting the normal operation of the entire transportation process.

[0060] Further, the crushing member 93 includes two groups of crushing rollers 931 and a first motor 933. The two groups of crushing rollers 931 are respectively rotatably connected to the front and rear sides inside the crushing bin 9111. The right ends of the shafts of the two groups of crushing rollers 931 penetrate through the crushing box 91 and are fixedly sleeved with gears 932. The two groups of gears 932 are meshed with each other. The output shaft end of the first motor 933 is fixedly connected to the center of the gear 932 located on the front side. One side of the crushing box 91 is fixedly connected with a first protective cover 934 for protecting the gear 932 and the first motor 933.

[0061] Specifically, the first motor 933 drives a group of gears 932 on the front side to rotate clockwise through the output shaft. The gear 932 on the front side will drive the crushing roller 931 connected thereto in the crushing bin 9111 to rotate clockwise. At the same time, the gear 932 on the front side will meshingly drive the gear 932 on the rear side to rotate counterclockwise, thereby driving the other group of crushing rollers 931 connected thereto in the crushing bin 9111 to rotate counterclockwise. Through the relative rotation of the two groups of crushing rollers 931, the ore material is clamped, compressed and continuously crushed, thus completing the effective crushing process of the ore material.

[0062] Further, the inclination angle of the sieve plate 94 is set to 5 degrees - 20 degrees.

[0063] Specifically, the inclination angle of the sieve plate 94 directly affects the residence time of the ore material on the sieve plate 94. A smaller inclination angle may cause the ore material to flow too fast and cannot be fully screened, while an excessive inclination angle may cause the ore material to flow too slowly or become blocked. Therefore, the sieve plate 94 needs to have a moderate inclination angle to balance the residence time and fluidity of the ore material. For ore materials, the inclination angle of the sieve plate 94 is usually between 5 degrees and 20 degrees. In practical applications, for dry ore or materials with smaller particles, 10 degrees - 15 degrees is a more appropriate range. If the ore material has a higher humidity or larger particles, it can be appropriately increased to between 15 degrees and 20 degrees to ensure the screening effect while avoiding blockage.

[0064] Further, slide rails 923 are symmetrically and fixedly provided on the left and right sides of the second discharge port 922. The outside of the sieve plate 94 is fixedly connected with a portal frame 941. The opening of the portal frame 941 faces forward. A plurality of groups of rollers 9411 are rotatably connected to the left and right sides of the portal frame 941. The rollers 9411 are slidably connected inside the slide rails 923.

[0065] Specifically, when the driving member 95 drives the portal frame 941 and the sieve plate 94 to reciprocate back and forth, the portal frame 941 drives the rollers 9411 to slide within the slide rail 923. The mutual cooperation between the rollers 9411 and the slide rail 923 enables the smooth sliding of the portal frame 941 within the slide rail 923, allowing the portal frame 941 to move smoothly along the slide rail 923. Due to the precise cooperation between the rollers 9411 and the slide rail 923, the frictional force of the portal frame 941 during movement is reduced, ensuring a smoother sliding process.

[0066] Further, the driving member 95 includes a second protective cover 951 with an opening at the front side. The second protective cover 951 is fixedly connected to the rear side of the blanking frame 92. A second motor 952 is fixedly connected inside the second protective cover 951. A disc 953 is fixedly sleeved on the output shaft end of the second motor 952. One end of a connecting rod 954 is rotatably connected to the edge of the disc 953 through a pin shaft. One end of the connecting rod 954 away from the disc 953 is rotatably connected to an ear seat 955 through a pin shaft. A moving rod 956 is fixedly connected to the side of the ear seat 955 away from the connecting rod 954. One end of the moving rod 956 away from the ear seat 955 is fixedly connected to the rear side of the portal frame 941. An activity slot 924 is formed through the lower end at the rear side of the blanking frame 92, and the moving rod 956 is slidably connected inside the activity slot 924.

[0067] Specifically, when the second motor 952 is controlled to operate, the second motor 952 drives the disc 953 to rotate through the output shaft. At this time, the disc 953 drives the connecting rod 954 to rotate, thereby indirectly driving the moving rod 956 to reciprocate back and forth inside the activity slot 924, and further driving the portal frame 941 and the sieve plate 94 to reciprocate and slide.

[0068] The working principle of the present invention: First step, the cutting drum 3 in the engine compartment 4 is driven by the engine to rotate, and the cutting teeth 34 on the cutting drum 3 come into contact with the ore layer and start to cut and break the ore layer. Second step, with the continuous rotation of the cutting drum 3 and the advancement of the front crawler 21 and the rear crawler 71, the cut ore enters the scraper plate 5, and the star wheel 51 pushes the ore in the scraper plate 5 onto the scraper conveyor 6. Third step, the ore conveyed by the scraper conveyor 6 is transported and dropped to the second blanking port 922 of the blanking frame 92. During this process, the second motor 952 indirectly drives the sieve plate 94 to reciprocate, thereby screening the ore dropped on the sieve plate 94. The ore meeting the particle size of the sieve plate 94 drops from the sieve holes of the sieve plate 94 and falls onto the belt conveyor 8 along the guide plate 9113 for continuous transportation. The ore not meeting the particle size of the sieve plate 94 slides to the first blanking port 921 along the inclined direction of the sieve plate 94 and drops into the crushing bin 9111. Fourth step, the two groups of crushing rollers 931 further crush the ore with large particle sizes. After crushing, the ore drops onto the belt conveyor 8 below the crushing bin 9111 and is continuously transported through the belt conveyor 8.

[0069] It should be noted that: 1. The important components of the mining machine involved in this article, including the mining machine body 1, the front drive frame 2, the front crawler 21, the engine compartment 4, the scraper plate 5, the star wheel 51, the scraper conveyor 6, the rear drive frame 7, the rear crawler 71, the belt conveyor 8, etc., all belong to the prior art content of the mining machine. Therefore, in the embodiments of the present invention, the detailed structures and functions of these components are not described in detail to avoid repetition and lengthy descriptions; 2. All the electrical equipment mentioned in the embodiments of the present invention is electrically connected to the control terminal of the mining machine to ensure accurate data transmission and coordinated work between each electrical equipment and the control terminal.

[0070] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An open-pit mining machine, characterized in that: The invention comprises a mining machine body (1), a cutting drum (3), a shovel (5), a scraper conveyor (6) and a belt conveyor (8), wherein the front side of the mining machine body (1) is respectively fixedly connected to two groups of front crawlers (21) through two groups of front drive frames (2), the cutting drum (3) is rotatably connected to the front lower end of the mining machine body (1), the front side of the mining machine body (1) and located above the cutting drum (3) is fixedly connected to an engine compartment (4), the engine compartment (4) is equipped with an engine for driving the cutting drum (3) to rotate, the shovel (5) is fixedly connected to the lower end of the mining machine body (1), and the engine compartment (4) is fixedly connected to the front side of the mining machine body (1). The end of the mining machine (1) is located behind the cutting drum (3), the shovel board (5) is symmetrically provided with two groups of star wheels (51), the scraper conveyor (6) is fixedly connected to the rear of the shovel board (5), the middle lower part of the mining machine body (1) is respectively fixedly connected to two groups of rear crawlers (71) through two groups of rear drive frames (7), the belt conveyor (8) is fixedly connected to the rear end of the mining machine body (1), and the feeding port of the belt conveyor (8) is located directly below the feeding port of the scraper conveyor (6), and the center of the cutting drum (3) is fixedly connected to a drum shaft (31), and the drum shaft (31) is connected to the engine; The outer side of the cutting drum (3) is fixedly connected to a plurality of bases (32); the upper end of the base (32) is fixedly connected to a tool mounting seat (33); a tool mounting groove (331) is provided on the surface of the tool mounting seat (33); a pick cutter (34) is detachably connected to the inside of the tool mounting groove (331) via a mechanical fixing member (35); a permanent magnetic seat (36) for magnetically attracting the pick cutter (34) is fixedly connected to the inside of the tool mounting groove (331) and located below the pick cutter (34); A crushing device (9) for crushing mineral materials is connected to the upper end of the feeding port of the belt conveyor (8) and the lower end of the feeding port of the scraper conveyor (6). The crushing device (9) comprises a crushing box (91) and a blanking frame (92). The upper surface, the lower surface and the rear side of the crushing box (91) are all opened. The upper surface opening of the crushing box (91) is inclined toward the front side. The lower surface opening of the crushing box (91) is located directly above the feeding port of the belt conveyor (8). A longitudinally arranged partition (911) is fixedly connected to the middle of the crushing box (91). The crushing bin (9111) is located inside the crushing box (91) and in front of the partition (911). The blanking bin (9112) is located inside the crushing box (91) and in rear of the partition (911). A discharge trough (9114) is provided at the lower end of the partition (911), the blanking frame (92) is fixedly connected to the opening of the upper surface of the crushing box (91), a discharge port 1 (921) is provided on the front side of the interior of the blanking frame (92) and located above the crushing bin (9111), a discharge port 2 (922) is provided on the rear side of the interior of the blanking frame (92) and located above the discharge bin (9112), the discharge port 2 (922) is located directly below the discharge port of the scraper conveyor (6), a crushing member (93) is connected to the interior of the crushing bin (9111), a screen plate (94) inclined toward the front is slidably connected to the interior of the discharge port 2 (922), and a driving member (95) for driving the screen plate (94) to reciprocate is connected to the rear side of the blanking frame (92).

2. An open-pit mining machine according to claim 1, characterized in that: Two groups of side holes (333) are formed on both left and right sides of the tool mounting seat (33), and the side holes (333) are connected to the tool mounting groove (331). The lower surface of the pick cutter (34) is fixedly connected to an upper fixed disc (341), and the lower surface of the upper fixed disc (341) is fixedly connected to a middle fixed disc (342). The diameter of the upper fixed disc (341) is greater than the diameter of the middle fixed disc (342). The lower surface of the middle fixed disc (342) is fixedly connected to a lower fixed disc (343). The diameter of the lower fixed disc (343) is consistent with the diameter of the upper fixed disc (341). The outer side of the disc (342) and the upper surface of the lower fixed disc (343) form a limiting circular groove (3421); the upper fixed disc (341), the middle fixed disc (342) and the lower fixed disc (343) are all located inside the tool mounting groove (331); the mechanical fixing member (35) includes two groups of fixing pins (351); the two groups of fixing pins (351) sequentially penetrate the two groups of side holes (333) on the left side, the limiting circular groove (3421) and the two groups of side holes (333) on the right side; a threaded hole (3511) is provided on the right side of the fixing pin (351); the internal thread of the threaded hole (3511) is connected with a fixing bolt (352) for limiting the movement of the fixing pin (351).

3. An open-pit mining machine according to claim 2, characterized in that: The outer ring of the tool installation groove (331) is provided with a plurality of groups of positioning grooves (334) at equal intervals, and the outer ring of the upper fixed disc (341) is provided with a plurality of groups of positioning blocks (3411) matching with the positioning grooves (334) at equal intervals.

4. An open-pit mining machine according to claim 2, characterized in that: The lower surface of the lower fixed disc (343) is attracted to the permanent magnetic seat (36).

5. The open-pit mining machine according to claim 1, characterized in that: A back hole (332) is provided on the rear side of the tool mounting seat (33), and the back hole (332) is communicated with the tool mounting groove (331). A manipulation hole (361) is provided on the rear side of the permanent magnetic seat (36). A manipulation column (37) for controlling the magnetic state of the permanent magnetic seat (36) is rotatably connected inside the back hole (332), and a connecting pin (371) inserted into the manipulation hole (361) is fixedly connected to the side of the manipulation column (37) close to the permanent magnetic seat (36).

6. The open-pit mining machine according to claim 1, characterized in that: A guide plate (9113) is fixedly connected to the rear side wall of the partition (911), and the guide plate (9113) is arranged at an angle.

7. An open-pit mining machine according to claim 1, characterized in that: The crushing element (93) comprises two groups of crushing rollers (931) and a motor (933). The two groups of crushing rollers (931) are rotatably connected to the front and rear sides of the crushing bin (9111) respectively. The right ends of the shafts of the two groups of crushing rollers (931) penetrate the crushing box (91) and are fixedly sleeved with gears (932). The two groups of gears (932) are meshed with each other. The output shaft end of the motor (933) is fixedly connected to the center of the gear (932) located at the front side. A protective cover (934) for protecting the gear (932) and the motor (933) is fixedly connected to one side of the crushing box (91).

8. The open-pit mining machine according to claim 1, characterized in that: Slide rails (923) are symmetrically fixed on the left and right sides of the second material discharge port (922); a door-shaped frame (941) is fixedly connected to the outer side of the sieve plate (94); the opening of the door-shaped frame (941) is arranged to face forward; and multiple groups of rollers (9411) are rotatably connected to the left and right sides of the door-shaped frame (941); and the rollers (9411) are slidably connected to the inside of the slide rails (923).

9. The open-pit mining machine according to claim 1, characterized in that: The driving member (95) comprises a second protective cover (951) with an opening at the front side, the second protective cover (951) is fixedly connected to the rear side of the blanking frame (92), the interior of the second protective cover (951) is fixedly connected to a second motor (952), the output shaft end of the second motor (952) is fixedly sleeved with a disk (953), the edge of the disk (953) is rotatably connected to a connecting rod (954) via a pin shaft, and the connecting rod (954) is away from the disk ( One end of the blanking frame (92) is rotatably connected to an ear seat (955) through a pin shaft, and a moving rod (956) is fixedly connected to the side of the ear seat (955) away from the connecting rod (954), and one end of the moving rod (956) away from the ear seat (955) is fixedly connected to the rear side of the door-shaped frame (941), and a movable groove (924) is penetrated through the lower end of the rear side of the blanking frame (92), and the moving rod (956) is slidably connected to the inside of the movable groove (924).

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