Open-cast mining machine

Abstract

The invention relates to an open-cast mining machine, and belongs to the technical field of mining machines. Comprising a mining machine body, a cutting roller, a shovel plate, a scraper conveyor and a belt conveyor, the front side of the mining machine body is fixedly connected with two sets of front crawler belts through two sets of front driving frames, the cutting roller is rotationally connected to the lower end of the front side of the mining machine body, and an engine bin is fixedly connected to the portion, located above the cutting roller, of the front side of the mining machine body. Through the combination of the mechanical fixing piece and the permanent magnetic seat, the cutting tooth tool is stably fixed in a mechanical and non-mechanical dual fixing mode. By means of the fixing mode, the common abrasion and loosening problems in a traditional mechanism are avoided, the fault risk possibly occurring in a non-mechanical fixing mode is also overcome, and therefore the stability of the cutting pick tool is comprehensively improved. And by arranging the crushing device, the situation that the granularity of the mineral aggregate is not uniform is effectively solved, and subsequent processing treatment of the mineral aggregate is facilitated.

Description

Technical Field

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

[0002] With the rapid development of the global economy and the continuous growth of population, the demand for mineral resources is increasing. As one of the main forms of mineral resource mining, the mining efficiency, safety and environmental impact of large open-pit mines have become the focus of industry attention. With the continuous advancement of science and technology, mining technology is also constantly innovating to cope with the growing demand and complex and changing mining environment.

[0003] In open-pit mining, the drum miner, as one of the common mining equipment, has become a core technical equipment for improving mining efficiency, reducing labor costs and improving safety through its efficient mechanized operation. The working principle of this equipment is based on advanced excavation technology and intelligent control system, and it can efficiently carry out large-section mining operations. The drum miner cuts and crushes the ore layer through the rotating cutting drum. With the continuous rotation of the drum and the advancement of the miner, the ore is gradually crushed and automatically falls into the built-in transportation system of the miner. After subsequent processing, the ore is transported to the ground or a designated storage point.

[0004] However, as the drum miner works at high intensity for a long time, the pick cutters on the cutting drum will wear out, which will directly affect the working efficiency of the equipment and the quality of the ore mining. Since the pick cutters and the tool mounting seat are usually fixed and connected by threads or clamping mechanisms, the removal and replacement process of the pick cutters is often cumbersome, which not only increases the time cost of equipment maintenance, but also increases the complexity of manual operation. In addition, since the pick cutters will wear out between the tool mounting seat during long-term work, the connection between the pick cutters and the tool mounting seat may become loose, resulting in a decrease in the stability and working efficiency of the pick cutters, thereby affecting the overall working performance of the mining machine and increasing the risk of equipment failure. At the same time, the drum miner often encounters the problem of uneven ore particle size during the ore layer cutting process. This not only affects the subsequent processing of the ore, but may also burden the transportation system of the ore. Summary of the invention

[0005] In order 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: The conveyor belt is fixedly connected to the rear end of the mining machine body, and the feeding port of the belt conveyor is located directly below the feeding port of the scraper conveyor. 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 provided 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 part, and a permanent magnetic seat for magnetically attracting the pick cutter is fixedly connected to the inside of the tool mounting groove and located below the pick cutter; A crushing device for crushing mineral materials is connected to the upper end of the belt conveyor inlet and the lower end of the scraper conveyor outlet.

[0006] The cam is an angular channel that is formed on a pair of camshafts and is used for conveying materials of various types including a frame, a and a plurality of support members, each of which has a camshaft that is provided with a plurality of support members, each of which has a plurality of support members and a plurality of support members.

[0007] The tool mounting seat is provided with two groups of side holes on the left and right sides, and the side holes are connected with the tool mounting groove, and the lower surface of the pick cutter is fixedly connected to the upper fixing disc, and the lower surface of the upper fixing disc is fixedly connected to the middle fixing disc, and the diameter of the upper fixing disc is larger than the diameter of the middle fixing disc, and the lower surface of the middle fixing disc is fixedly connected to the lower fixing disc, and the diameter of the lower fixing disc is consistent with the diameter of the upper fixing disc, and 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 form a limiting circular groove, and the upper fixing disc, the middle fixing disc and the lower fixing disc are all located inside the tool mounting groove, and the mechanical fixing part includes two groups of fixing pins, and the two groups of fixing pins pass through the two groups of side holes on the left, the limiting circular groove and the two groups of side holes on the right in sequence, and a threaded hole is provided on the right side of the fixing pin, and the internal thread of the threaded hole is connected with a fixing bolt for limiting the movement of the fixing pin.

[0008] Optionally, a plurality of groups of positioning grooves are equidistantly arranged in an outer ring shape on the tool installation groove, and a plurality of groups of positioning blocks matching with the positioning grooves are equidistantly fixed in an outer ring shape on the upper fixed disc.

[0009] Optionally, the lower surface of the lower fixed disc is attracted to the permanent magnetic seat.

[0010] Optionally, a back hole is opened on the rear side of the tool mounting seat, and the back hole is connected to the tool mounting groove. A manipulation hole is opened on the rear side of the permanent magnet magnetic seat. The back hole is internally rotatably connected to a manipulation column for controlling the magnetic state of the permanent magnet magnetic seat. The manipulation column is fixedly connected to a connecting pin inserted into the manipulation hole on one side close to the permanent magnet magnetic seat.

[0011] Optionally, a guide plate is fixedly connected to the rear side wall of the partition, and the guide plate is arranged at an angle.

[0012] Optionally, the crushing part includes two groups of crushing rollers and a motor 1, the two groups of crushing rollers are rotatably connected to the front and rear sides of the crushing bin respectively, the right ends of the shafts of the two groups of crushing rollers pass through the crushing box and are fixedly sleeved with gears, the two groups of gears are meshed with each other, the output shaft end of the motor 1 is fixedly connected to the center of the gear located on the front side, and a protective cover 1 for protecting the gears and the motor 1 is fixedly connected to one side of the crushing box.

[0013] Optionally, slide rails are symmetrically fixed on the left and right sides of the second discharge port, and a door-shaped frame is fixedly connected to the outer side of the screen plate. The opening of the door-shaped frame is set forward, and multiple sets of rollers are rotatably connected to the left and right sides of the door-shaped frame, and the rollers are slidably connected to the inside of the slide rails.

[0014] Optionally, the driving member includes a protective cover 2 with an opening on the front side, the protective cover 2 is fixedly connected to the rear side of the blanking frame, the interior of the protective cover 2 is fixedly connected to a motor 2, the output shaft end of the motor 2 is fixedly sleeved with a disk, the edge of the disk is rotatably connected to a connecting rod via a pin, the end of the connecting rod away from the disk is rotatably connected to an ear seat via a pin, the side of the ear seat away from the connecting rod is fixedly connected to a moving rod, the end of the moving rod away from the ear seat is fixedly connected to the rear side of the door-shaped frame, a movable groove is penetrated through the lower end of the rear side of the blanking frame, and the moving rod is slidably connected to the inside of the movable groove.

[0015] All the above optional technical solutions can be combined arbitrarily, and the present invention does not provide detailed descriptions of the structures after the combinations.

[0016] By means of the above scheme, the beneficial effects of the present invention are as follows: 1. The present invention adopts a combination of a mechanical fixing part and a permanent magnetic seat to firmly fix the pick cutter by using a dual fixing method of mechanical and non-mechanical. 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, thereby comprehensively improving the stability of the pick cutter. The permanent magnetic seat can firmly adsorb the pick cutter through a strong magnetic force to prevent it from rubbing or wearing against the tool mounting seat during long-term work, thereby avoiding the occurrence of loosening and ensuring the efficient operation and long-term stability of the pick cutter. At the same time, the mechanical fixing part provides a secondary fixing guarantee for the pick cutter, further eliminating the potential risk of magnetic failure of the permanent magnetic seat, and ensuring the safety and reliability of the pick cutter at work. In addition, when disassembling and replacing the pick cutter, it is only necessary to remove the mechanical fixing part, and then manually operate the permanent magnetic seat to release the magnetic attraction, so that the pick cutter can be easily disassembled, which greatly shortens the replacement process time, improves operating efficiency, and reduces the time cost of equipment downtime maintenance.

[0017] 2. By setting up a crushing device, the scraper conveyor transports the ore to the crushing device. After being crushed by the crushing device, it is transported by a belt conveyor, which solves the problem of uneven particle size of the ore and facilitates the subsequent processing of the ore.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall appearance structure of the open-pit mining machine provided by the present invention; Figure 2 A right side view of the open-pit mining machine provided by the present invention; Figure 3 A bottom view of the open-pit mining machine provided by the present invention; Figure 4 It is a schematic diagram of the structure of the cutting drum in the present invention; Figure 5 It is a schematic diagram of the structure of the base, the tool mounting seat, the pick cutter, the mechanical fixing part and the control column in the present invention; Figure 6 for Figure 5 Left side cross-sectional view; Figure 7 It is a cross-sectional view of the tool mounting seat, the middle fixed disc, the lower fixed disc and the mechanical fixing member in the present invention; Figure 8 is a cross-sectional view of the tool mounting seat of the present invention; Fig. 9 It is a schematic diagram of the exploded structure of the base, the tool mounting seat, the pick cutter and the mechanical fixing member in the present invention; Fig.10 It is a schematic diagram of the exploded structure of the base, the tool mounting seat, the permanent magnetic seat and the control column in the present invention; Fig.11 It is a schematic diagram of the structure of the shovel plate, scraper conveyor, belt conveyor and crushing device in the present invention; Fig.12 It is a right side cross-sectional view of the belt conveyor and the crushing device in the present invention; Fig.13 It is a structural schematic diagram of the crushing device in the present invention; Fig.14 The schematic diagram of the decomposition structure of the crushing device in the present invention is shown in FIG. Figure 1 ; Fig.15 The schematic diagram of the decomposition structure of the crushing device in the present invention is shown in FIG. Figure 2 .

[0020] Numbers in the figure: 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 slot; 332. Back hole; 333. Side hole; 334. Positioning slot; 34. Pick cutter; 341. Upper fixed disc; 3411. Positioning block; 342. Middle fixed disc; 3421. Limiting circular slot; 343. Lower fixed disc; 35. Mechanical fixings; 351. Fixing pin; 3511. Threaded hole; 352. Fixing bolt; 36. Permanent magnetic seat; 361. Control hole; 37. Control column; 371. Connecting pin; 4. Engine compartment; 5. Shovel board; 51. Star wheel; 6. Scraper conveyor machine; 7, rear drive frame; 71, rear crawler; 8, belt conveyor; 9, crushing device; 91, crushing box; 911, partition; 9111, crushing bin; 9112, discharge bin; 9113, guide plate; 9114, discharge chute; 92, discharge frame; 921, discharge port 1; 922, discharge port 2; 923, slide rail; 924, movable trough; 93, crushing parts; 931, crushing roller; 932, gear; 933, motor 1; 934, protective cover 1; 94, sieve plate; 941, door frame; 9411, roller; 95, driving part; 951, protective cover 2; 952, motor 2; 953, disc; 954, connecting rod; 955, ear seat; 956, moving rod. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] See also Figure 1-15 The present invention provides an open-pit mining machine, including a mining machine body 1, a cutting drum 3, a shovel 5, a scraper conveyor 6 and a belt conveyor 8. The front side of the mining machine body 1 is respectively fixedly connected with two groups of front crawlers 21 through two groups of front drive frames 2. The cutting drum 3 is rotatably connected to the lower end of the front side of the mining machine body 1. The front side of the mining machine body 1 and above the cutting drum 3 are fixedly connected with an engine compartment 4. The engine compartment 4 has an engine for driving the cutting drum 3 to rotate. The shovel 5 is fixedly connected to the front side of the mining machine body 1. The lower end of the mining machine body 1 is located behind the cutting drum 3, two sets of star wheels 51 are symmetrically arranged on the shovel board 5, the scraper conveyor 6 is fixedly connected to the rear of the shovel board 5, and two sets of rear crawlers 71 are respectively fixedly connected to the middle and lower part of the mining machine body 1 through two sets 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 discharging port of the scraper conveyor 6. The center of the cutting drum 3 is fixedly connected to the drum shaft 31, and the drum shaft 31 is connected to the engine; The outer side of the cutting drum 3 is fixedly connected with a plurality of bases 32, the upper end of the base 32 is fixedly connected with a tool mounting seat 33, the surface of the tool mounting seat 33 is provided with a tool mounting groove 331, the inside of the tool mounting groove 331 is detachably connected with a pick cutter 34 through a mechanical fixing part 35, and the inside of the tool mounting groove 331 and below the pick cutter 34 is fixedly connected with a permanent magnetic seat 36 for magnetically attracting 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 .

[0023] Specifically, the drum shaft 31 is connected to the engine, and belt drive wheels are fixedly mounted on the outer side of one end of the drum shaft 31 and the outer side of the output shaft of the engine, and the two sets of belt drive wheels are connected by belts, so that the engine drives the drum shaft 31 to rotate.

[0024] The present invention adopts a mechanical and non-mechanical dual fixing method to firmly fix the pick cutter 34 by setting a combination of a mechanical fixing part 35 and a permanent magnetic seat 36. 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, thereby comprehensively improving the stability of the pick cutter 34. The permanent magnetic seat 36 can firmly adsorb the pick cutter 34 through a strong magnetic force to prevent it from rubbing or wearing with the tool mounting seat 33 during long-term work, thereby avoiding the occurrence of loosening and ensuring the efficient operation and long-term stability of the pick cutter 34. At the same time, the mechanical fixing part 35 provides a secondary fixing guarantee for the pick cutter 34, further eliminating the potential risk of magnetic failure of the permanent magnetic seat 36, and ensuring the safety and reliability of the pick cutter 34 at work. In addition, when disassembling and replacing the pick cutter 34, it is only necessary to remove the mechanical fixing part 35, and then manually operate the permanent magnetic seat 36 to release the magnetic attraction, so that the pick cutter 34 can be easily disassembled, which greatly shortens the time of the replacement process, improves the operating efficiency, and reduces the time cost of equipment downtime maintenance.

[0025] The permanent magnet seat 36 in the embodiment of the present invention is a device in the prior art that can generate a strong magnetic field using a permanent magnet, and can magnetically fix the pick cutter 34. Specifically, the outer shell of the permanent magnet seat 36 is two magnetic conductive bodies separated by a non-magnetic copper plate in the middle, and there is a rotatable permanent magnet inside, and the permanent magnet has N and S poles along the diameter direction. By rotating the internal permanent magnet, the direction of the magnetic circuit can be changed, thereby switching the magnetic state of the permanent magnet seat 36, and achieving the adsorption and release of the pick cutter 34.

[0026] By setting up the crushing device 9, the scraper conveyor 6 transports the mineral material to the crushing device 9. After being crushed by the crushing device 9, it is transported by the belt conveyor 8, which solves the problem of uneven particle size of the mineral material and facilitates the subsequent processing of the mineral material.

[0027] Furthermore, the crushing device 9 includes a crushing box 91 and a material drop 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 box 91 is located in front of the partition 911 and is a crushing bin 9111. The crushing box 91 is located in the rear of the partition 911 and is a material drop bin 9112. The lower end of the partition 911 is provided with a discharge trough 911. 4. A blanking frame 92 is fixedly connected to the opening on the upper surface of the crushing box 91. A blanking port 1 921 is provided on the front inner side of the blanking frame 92 and located above the crushing bin 9111. A blanking port 2 922 is provided on the rear inner side of the blanking frame 92 and located above the blanking bin 9112. The blanking 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 sieve plate 94 inclined toward the front is slidably connected to the interior of the blanking port 2 922. A driving member 95 for driving the sieve plate 94 to reciprocate is connected to the rear side of the blanking frame 92.

[0028] Specifically, the scraper conveyor 6 transports the mined ore to the upper end of the crushing box 91, and drops it on the screen plate 94. The screen plate 94 performs reciprocating screening under the action of the driving member 95. During the reciprocating screening process, the particle size of the ore can be effectively screened. In this process, the ore that meets the particle size of the screen plate 94 will directly fall through the drop bin 9112 to the belt conveyor 8 for transportation, while the ore that does not meet the particle size of the screen plate 94 will slide along the inclined direction of the screen plate 94 to the discharge port 921 under the reciprocating screening action of the screen plate 94, and finally fall into the crushing bin 9111 and be crushed by the crushing member 93. The crushed ore falls on the belt conveyor 8 for continued transportation, thereby 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 screen plate 94, the mineral materials have been effectively separated before entering the crushing chamber 9111, and the mineral materials that meet the particle size requirements will be directly diverted out, which greatly reduces the load of the crushing chamber 9111 and the bearing pressure of the crushing element 93. At the same time, the qualified mineral materials pre-screened also reduce the wear on the crushing element 93 and avoid unnecessary secondary crushing.

[0029] Furthermore, two sets of side holes 333 are formed on both 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 larger 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 fixed disk 342 and the upper surface of the lower fixed disk 343 form a limiting circular groove 3421. The upper fixed disk 341, the middle fixed disk 342 and the lower fixed disk 343 are all located inside the tool mounting groove 331. The mechanical fixing part 35 includes two groups of fixing pins 351. The two groups of fixing pins 351 pass through the two groups of side holes 333 on the left, the limiting circular groove 3421 and the two groups of side holes 333 on the right in sequence. A threaded hole 3511 is opened on the right side of the fixing pin 351. The internal thread of the threaded hole 3511 is connected to a fixing bolt 352 for limiting the movement of the fixing pin 351.

[0030] Specifically, when removing the mechanical fixing member 35 of the pick cutter 34, it is only necessary to screw the fixing bolt 352 out of the threaded hole 3511, and then remove the fixing pin 351 from the side hole 333, so that the pick cutter 34 loses the mechanical locking from the mechanical fixing member 35, and the operation is simple and convenient. When reinstalling the pick cutter 34, it is only necessary 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 groups of fixing pins 351 from the two groups of side holes 333 on the left side of the tool mounting seat 33, pass through the limiting circular groove 3421 in sequence, and finally penetrate into the two groups of side holes 333 on the right side of the tool mounting seat 33, at this time, the pick cutter 34 is limited in position by the fixing pin 351. Finally, the fixing bolt 352 is screwed into the threaded hole 3511 of the fixing pin 351 from the two groups of side holes 333 on the right side of the tool mounting seat 33, so that the fixing pin 351 can be fixed. 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 .

[0031] Furthermore, a plurality of groups of positioning grooves 334 are equidistantly provided in an annular shape on the outer side of the tool installation groove 331 , and a plurality of groups of positioning blocks 3411 matching with the positioning grooves 334 are equidistantly fixed in an annular shape on the outer side of the upper fixed disc 341 .

[0032] Specifically, when installing the pick cutter 34, it is only necessary to align the positioning block 3411 with the positioning slot 334 and insert it to achieve fast and accurate positioning, thereby greatly improving the installation efficiency and simplifying the installation process.

[0033] Furthermore, the lower surface of the lower fixed disk 343 is attracted to the permanent magnetic seat 36 .

[0034] Specifically, the permanent magnetic seat 36 fixes the lower fixed disc 343 by magnetic attraction, thereby avoiding the wear and loosening of the traditional fixing mechanism during long-term use.

[0035] Furthermore, a back hole 332 is opened on the rear side of the tool mounting seat 33, and the back hole 332 is connected to the tool mounting groove 331. An operating hole 361 is opened on the rear side of the permanent magnetic seat 36. The back hole 332 is internally rotatably connected to a control column 37 for controlling the magnetic state of the permanent magnetic seat 36. The control column 37 is fixedly connected to a connecting pin 371 inserted into the operating hole 361 on one side close to the permanent magnetic seat 36.

[0036] Specifically, the operating hole 361 is opened on one side of the permanent magnet inside the permanent magnet seat 36. By rotating the operating column 37, the permanent magnet inside the permanent magnet seat 36 can be driven to rotate, thereby conveniently controlling the magnetic state of the permanent magnet seat 36, so that it can quickly have or release the magnetic attraction, thereby realizing the rapid installation and disassembly of the pick cutter 34, and greatly improving the efficiency of the installation and disassembly of the pick cutter 34.

[0037] Specifically, when it is necessary to magnetically fix the pick cutter 34, the operating column 37 is manually rotated, and the operating column 37 drives the permanent magnet inside the permanent magnet seat 36 to rotate through the connecting pin 371. When the magnetic poles (N / S) of the permanent magnet are facing 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 be guided by the magnetic conductor to form an effective magnetic field, so that the permanent magnet seat 36 generates a magnetic attraction force, thereby realizing the magnetic attraction fixation of the pick cutter 34; when it is necessary to release the magnetic attraction fixation of the pick cutter 34, the operating column 37 is rotated in the opposite direction, and the operating column 37 drives the permanent magnet to rotate in the opposite direction, so that the magnetic field distribution changes. At this time, the magnetic attraction force of the permanent magnet seat 36 is reduced, and the magnetic attraction fixation of the pick cutter 34 can be released.

[0038] Furthermore, 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.

[0039] Specifically, the ore materials that meet the particle size sieved by the screen plate 94 will be guided by the guide plate 9113 and fall onto the belt conveyor 8, thereby slowing down the falling speed of the ore materials and preventing the ore materials from damaging the belt conveyor 8 due to violent falling. At the same time, the ore materials in the drop bin 9112 are prevented from falling from above the discharge trough 9114. Since the discharge trough 9114 is the only outlet of the crushing bin 9111, if a large amount of ore materials fall and accumulate at the discharge trough 9114, it will not only cause the accumulation of ore materials inside the crushing bin 9111, but also may cause the crushing parts 93 of the crushing bin 9111 to be seriously affected, and even may cause transportation to stagnate, thereby affecting the normal operation of the entire transportation process.

[0040] Furthermore, the crushing member 93 includes 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 on 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.

[0041] Specifically, the motor 1 933 drives a group of gears 932 on the front side to rotate clockwise through the output shaft, and the gears 932 on the front side will drive the crushing roller 931 connected thereto in the crushing chamber 9111 to rotate clockwise. At the same time, the gears 932 on the front side will mesh and drive the gears 932 on the rear side to rotate counterclockwise, thereby driving another group of crushing rollers 931 connected thereto in the crushing chamber 9111 to rotate counterclockwise. Through the relative rotation of the two groups of crushing rollers 931, the mineral material is clamped, compressed and continuously crushed, thereby completing the effective crushing process of the mineral material.

[0042] Further, the inclination angle of the sieve plate 94 is set to 5 degrees to 20 degrees.

[0043] Specifically, the inclination angle of the screen plate 94 directly affects the residence time of the mineral material on the screen plate 94. A smaller inclination angle may cause the mineral material to flow too fast and cannot be fully screened, while an excessively large inclination angle may cause the mineral material to flow too slowly or be blocked. Therefore, the screen plate 94 needs to have a moderate inclination angle to balance the residence time and fluidity of the mineral material. For mineral materials, the inclination angle of the screen plate 94 is usually between 5 degrees and 20 degrees. In practical applications, for dry ores or materials with smaller particles, 10 degrees to 15 degrees is a more suitable range. If the mineral material is relatively wet or the particles are large, it can be appropriately increased to between 15 degrees and 20 degrees to ensure the screening effect while avoiding blockage.

[0044] Furthermore, slide rails 923 are symmetrically fixed on the left and right sides of the second discharge port 922, and a door frame 941 is fixedly connected to the outer side of the screen plate 94. The opening of the door frame 941 is set forward, and multiple groups of rollers 9411 are rotatably connected to the left and right sides of the door frame 941, and the rollers 9411 are slidably connected to the inside of the slide rails 923.

[0045] Specifically, when the driving member 95 drives the door frame 941 and the screen plate 94 to move back and forth, the door frame 941 drives the roller 9411 to slide in the slide rail 923. The mutual cooperation between the roller 9411 and the slide rail 923 realizes the smooth sliding of the door frame 941 in the slide rail 923, so that the door frame 941 can move smoothly along the slide rail 923. Due to the precise cooperation between the roller 9411 and the slide rail 923, the friction of the door frame 941 is reduced during the movement, ensuring that its sliding process is smoother.

[0046] Furthermore, the driving member 95 includes a protective cover 951 with an opening on the front side, the protective cover 951 is fixedly connected to the rear side of the blanking frame 92, the interior of the protective cover 951 is fixedly connected to a motor 952, the output shaft end of the motor 952 is fixedly sleeved with a disk 953, the edge of the disk 953 is rotatably connected to a connecting rod 954 through a pin, the end of the connecting rod 954 away from the disk 953 is rotatably connected to an ear seat 955 through a pin, the side of the ear seat 955 away from the connecting rod 954 is fixedly connected to a moving rod 956, the 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.

[0047] Specifically, the control motor 2 952 is operated, and the motor 2 952 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 slide back and forth in the movable groove 924, and then driving the door frame 941 and the screen plate 94 to slide back and forth.

[0048] The working principle of the present invention is as follows: In the first step, the cutting drum 3 is driven to rotate by the engine in the engine compartment 4, and the cutting tooth tool 34 on the cutting drum 3 contacts the ore layer and starts to cut and crush the ore layer. In the 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 shovel plate 5, and the ore in the shovel plate 5 is pushed to the scraper conveyor 6 through the star wheel 51. In the third step, the ore transported by the scraper conveyor 6 is transported and dropped to the discharge port 2 922 of the blanking frame 92. In this process, the motor 2 952 indirectly drives the screen plate 94 to move back and forth, thereby screening the ore falling on the screen plate 94. The ore that meets the particle size of the screen plate 94 falls from the sieve hole of the screen plate 94, and falls to the belt conveyor 8 with the guide plate 9113 for further transportation. The ore that does not meet the particle size of the screen plate 94 will slide to the discharge port 921 along the tilt direction of the screen plate 94 and fall into the crushing bin 9111. In the fourth step, the two sets of crushing rollers 931 further crush the ore with large particle size. After the crushing is completed, the ore falls onto the belt conveyor 8 below the crushing bin 9111 and continues to be transported by the belt conveyor 8.

[0049] 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 shovel 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 existing technical content of the mining machine. Therefore, the detailed structure and function of these components are not described in detail in the embodiments of the present invention to avoid repeated and lengthy descriptions; 2. All electrical equipment mentioned in the embodiments of the present invention are electrically connected to the control terminal of the mining machine to ensure that accurate data transmission and collaborative work can be achieved between each electrical equipment and the control terminal.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection 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) via 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), an engine compartment (4) is fixedly connected to the front side of the mining machine body (1) and located above the cutting drum (3), the engine compartment (4) having an engine built therein 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 plate (5) is symmetrically provided with two sets of star wheels (51), the scraper conveyor (6) is fixedly connected to the rear of the shovel plate (5), the middle lower part of the mining machine body (1) is respectively fixedly connected to two sets of rear crawler belts (71) through two sets 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), 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 inlet of the belt conveyor (8) and the lower end of the outlet of the scraper conveyor (6).

2. An open-pit mining machine according to claim 1, characterized in that: The crushing device (9) comprises a crushing box (91) and a material dropping 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); a crushing bin (9111) is located inside the crushing box (91) and in front of the partition (911); a material dropping bin (9112) is located inside the crushing box (91) and in the rear side of the partition (911); and a material 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 first blanking port (921) is provided on the front side of the blanking frame (92) and located above the crushing bin (9111); a second blanking port (922) is provided on the rear side of the blanking frame (92) and located above the blanking bin (9112); the second blanking port (922) is located directly below the discharge port of the scraper conveyor (6); a crushing member (93) is connected to the inside of the crushing bin (9111); a sieve plate (94) inclined toward the front is slidably connected to the inside of the second blanking port (922); and a driving member (95) for driving the sieve plate (94) to reciprocate is connected to the rear side of the blanking frame (92).

3. 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) comprises 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 inner thread of the threaded hole (3511) is connected with a fixing bolt (352) for limiting the movement of the fixing pin (351).

4. An open-pit mining machine according to claim 3, 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 the positioning grooves (334) at equal intervals.

5. The open-pit mining machine according to claim 3, characterized in that: The lower surface of the lower fixed disc (343) is attracted to the permanent magnetic seat (36).

6. 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 control hole (361) is provided on the rear side of the permanent magnetic seat (36). A control 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 control hole (361) is fixedly connected to a side of the control column (37) close to the permanent magnetic seat (36).

7. An open-pit mining machine according to claim 2, characterized in that: A guide plate (9113) is fixedly connected to the rear side wall of the partition plate (911), and the guide plate (9113) is arranged at an angle.

8. The open-pit mining machine according to claim 2, 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).

9. An open-pit mining machine according to claim 2, characterized in that: Slide rails (923) are symmetrically fixedly arranged 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).

10. The open-pit mining machine according to claim 2, 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), a second motor (952) is fixedly connected inside the second protective cover (951), a disk (953) is fixedly sleeved on the output shaft end of the second motor (952), an edge of the disk (953) is rotatably connected to a connecting rod (954) via a pin, an end of the connecting rod (954) away from the disk (953) is rotatably connected to an ear seat (955) via a pin, a side of the ear seat (955) away from the connecting rod (954) is fixedly connected to a moving rod (956), an 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), 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 inside the movable groove (924).

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