Step type mine quarrying face in-situ ore moving type head section treatment process

Abstract

The invention discloses a step type mine quarrying face in-situ ore moving type head section treatment process which comprises the steps that a crawler belt impact type roller crusher is arranged on a mine quarrying face in situ, and the crawler belt impact type roller crusher receives, conveys and crushes in-situ ore mined on the mine quarrying face; each crawler belt moving belt conveyor comprises a movable crawler belt driving base and a conveying belt conveyor body arranged on the crawler belt driving base, and the crawler belt moving belt conveyors are connected end to end to convey materials; the mine quarrying working face comprises a top quarrying working face arranged on the mountain top and a stepped in-mountain quarrying working face arranged on the lower portion of the mountain top. By means of the mountain height difference, the crawler belt moves the belt conveyor, so that conveyed materials roll down from a mine quarrying face towards the mountain or are directly conveyed to the downhill through the long-distance belt conveyor. According to the invention, head section crushing work and quarrying work are combined, intermediate transportation links are reduced, energy consumption is saved, cost is reduced, and flexibility and efficiency are high.

Description

Technical Field

[0001] The invention relates to the technical field of stone processing, and in particular to an in-situ ore mobile head section processing process for a stepped mine quarrying working face. Background Art

[0002] In the field of machine-made sand mining and preparation, open-pit mining of ore has always been one of the important mining methods. At present, the industry has a series of industry standards and specifications for open-pit ore mining and subsequent processing. For example, in terms of mining recovery rate, according to relevant industry standards, different ore types and mining conditions have clear recovery rate requirements to ensure the full utilization of ore resources. In addition, there are certain specifications for energy consumption. For example, some regions have stipulated the upper limit standard for the comprehensive energy consumption per unit ore of open-pit mining, and the comprehensive unit consumption per unit ore of each process such as drilling, loading, transportation, and crushing also has corresponding reference values.

[0003] However, in the existing open-pit mining process of machine-made sand, the mining work area and the first stage crushing work area are usually set separately. This traditional mining mode has a certain gap with the goals of high efficiency, energy saving, and full utilization of resources pursued by industry standards and specifications. In the traditional mode, the mined raw stones first need to be shoveled and loaded, and the ore is loaded from the mining site to the transport vehicle using loaders and other equipment. Then, the transport vehicle transports the raw stones to the first stage crushing work area for subsequent processing. This series of operations is not only difficult to meet the increasingly stringent standard requirements of the industry in terms of fuel consumption and energy consumption, but also increases the production costs of enterprises. In addition, during the transportation process, the raw stones may be scattered and lost, affecting the recovery rate and comprehensive utilization rate of the ore, which is contrary to the requirements of the industry standards for full utilization of resources. In addition, this separate work area leads to low work efficiency, affects the progress of the entire production process, and is not conducive to the industry's pursuit of efficient production.

[0004] In summary, in the existing open-pit mining and preparation of artificial sand ore, a new technical solution is urgently needed to solve these problems in order to better meet the development trends and standards of the industry. Summary of the invention

[0005] In view of the above background technology, the present invention provides a new process in which the head-stage crushing working area is set on the ore quarrying working surface, so that the head-stage crushing work is combined with the quarrying work, reducing the intermediate transportation links, saving energy consumption, saving production costs, and having high flexibility, good adaptability and high production efficiency.

[0006] To achieve the above-mentioned object, the present invention provides an in-situ mobile head section processing process for ore in a stepped mine quarrying working face, comprising: setting a crawler impact roller crusher in-situ at the mine quarrying working face, the crawler impact roller crusher comprising a crawler drive part, a heavy chain scraper conveyor connected to the crawler drive part, and an impact roller crushing device arranged above the heavy chain scraper conveyor;

[0007] The crawler impact roller crusher receives, transports and crushes the in-situ ore mined on the quarrying working surface of the mine;

[0008] A plurality of crawler mobile belt conveyors, each crawler mobile belt conveyor comprising a movable crawler drive base and a conveyor belt conveyor body arranged thereon, wherein the plurality of crawler mobile belt conveyors are connected end to end to convey materials;

[0009] The mine quarrying working face includes a top quarrying working face arranged at the top of the mountain and a stepped mountain quarrying working face arranged at the bottom of the mountain top;

[0010] The tail end of the crawler mobile belt conveyor transports the materials to the edge of the mine quarrying working face, and utilizes the height difference of the mountain to make the transported materials roll down the mountain from the mine quarrying working face to the transfer warehouse at the foot of the mountain, or directly transport them to the transfer warehouse at the foot of the mountain using a long-distance belt conveyor.

[0011] Preferably, the heavy-duty chain scraper conveyor comprises an integrally arranged feeding section, a concave section and a discharging section, the feeding section is arranged in front of the impact roller crusher, the discharging section is arranged behind the impact roller crusher, and the concave section is arranged below the impact roller crusher; a support frame is arranged on the supporting trough body of the concave section, and the support frame is provided with a plurality of parallelly arranged power feed rollers in sequence from the feeding direction to the discharging direction, and the outer roller circumference of the power feed roller is provided with a spiral guide rail guiding in the feeding direction, and the upper surface of the power feed roller is not higher than the upper conveying plane of the heavy-duty chain scraper conveyor; a crushing load-bearing bottom plate is arranged in connection with the discharging rear of the power feed roller, and the crushing load-bearing bottom plate is placed below the impact roller crusher; the crushing load-bearing bottom plate is connected to the supporting trough body through a support frame, and is elastically connected relative to the supporting trough body along the feeding and discharging direction; the discharging section is arranged behind the crushing load-bearing bottom plate;

[0012] The impact roller crushing device comprises a housing and a roller, wherein the roller is mounted on the supporting trough body through a bearing seat, so that the roller is placed in a crushing cavity above the crushing load-bearing bottom plate, and the impact roller crushing device comprises a driving motor, wherein the driving motor drives the V-belt pulley at the end of the roller to rotate through a V-belt, thereby driving the roller to perform high-speed rotational motion; the crushing load-bearing bottom plate and the inner cavity of the housing are combined to enclose a crushing cavity;

[0013] The feed port of the impact roller crusher is placed above the crushing load-bearing bottom plate, and the distance between the outer edge line of the frontmost hammer head of the roller that first eats material and the vertical projection of the crushing load-bearing bottom plate and the frontmost feeding outer edge of the crushing load-bearing bottom plate is not greater than one half of the vertical projection distance of the frontmost hammer head from the crushing load-bearing bottom plate.

[0014] Preferably, the heavy-duty chain scraper conveyor includes the support trough bodies arranged on both sides, the support trough bodies are connected to the carrying frame of the crawler drive part, a driving sprocket is arranged at one end of the trough bodies on both sides, and a plurality of redirecting sprockets are respectively arranged at the other end and the corner of the concave section, high-strength wear-resistant chain rings are sleeved on the driving sprocket and the redirecting sprocket, scrapers are evenly spaced on the high-strength wear-resistant chain rings, and the main shaft of the driving sprocket is connected to the motor drive assembly.

[0015] Preferably, the crushing load-bearing bottom plate is slightly inclined with a low feed end and a high discharge end, and an acute angle between it and the horizontal plane is no more than 5 degrees. The upper edge line of the feed end of the crushing load-bearing bottom plate is higher than the upper edge of the power feed roller, and the height difference is no more than one tenth of the size of the feed port of the impact roller crusher device.

[0016] Preferably, a reinforcing rib plate is laterally arranged below the crushing load-bearing bottom plate, and the reinforcing rib plate includes a first plane which is laterally arranged and perpendicular to the feeding and discharging direction, the first plane is connected to an elastic component whose elastic force is perpendicular to it, the elastic component is connected to a bearing plate, both ends of the bearing plate extend from both sides of the concave section and are connected to fixed piles, and the fixed piles are used to be inserted into the underground of the quarrying working surface for pile fixing.

[0017] Preferably, at least one reinforcing rib plate is provided, and the reinforcing rib plate is provided on the plumb plane where the frontmost hammer head of the roller is located.

[0018] Preferably, the elastic component is a leaf spring.

[0019] Preferably, multiple groups of fixing studs are arranged on both sides above the support frame, connecting waist-shaped holes are arranged on both sides of the corresponding positions of the crushing load-bearing bottom plate, the waist-shaped holes are sleeved on the fixing studs, and longitudinal limiting nuts are arranged on the upper parts of the fixing studs.

[0020] Preferably, the discharging section is connected to a roller device and a discharging conveying belt machine.

[0021] Preferably, a Lane crusher is arranged in the subsequent process of the crawler impact roller crusher, the discharge particle size of the Lane crusher is 0-120mm, and the first crushing discharge particle size of the crawler impact roller crusher is 0-350mm.

[0022] Compared with the related art, the in-situ ore mobile head section processing process for the stepped mine quarrying working face provided by the present invention has the following beneficial effects:

[0023] 1. The process of the present invention adopts a crawler-type impact roller crusher for the first crushing, with low-profile loading, no need to design an unloading platform, almost no infrastructure cost, and much lower height than the traditional silo plus feeder loading form.

[0024] 2. The crawler mobile belt conveyor unit in this process can be arbitrarily increased or decreased, combined, and arranged according to the distance between the initial mining position and the final mining position, with high flexibility and strong adaptability.

[0025] 3. This process sets up a crawler impact roller crusher on site at the quarrying face of the mine to directly crush the ore on site without the need for shoveling and long-distance transportation, greatly reducing dependence on fuel and reducing fuel consumption costs.

[0026] 4. All equipment in this process adopts electric direct drive, such as electric shovel loading, electric drive crawler walking, electric drive crusher crushing, etc., using electricity instead of oil to avoid the problem of increased mining costs caused by fuel shortages; and there is no need to reserve fuel on site, reducing safety hazards. Multiple equipment work in coordination, improving energy utilization efficiency, and overall reducing the energy consumption cost of the mining process.

[0027] 5. The process crushing device is directly set up on the quarrying working face. The mined ore can be crushed immediately and then quickly transported by the crawler mobile belt conveyor, which greatly shortens the process and improves production efficiency. In addition, with step-by-step mining, the previous mining face can be easily moved down to the next mining face for continued crushing, which has high production continuity and efficiency.

[0028] 6. The crawler impact roller crusher and crawler mobile belt conveyor of this process can realize continuous operation without being restricted by the scheduling of shovel loading and transportation vehicles. Multiple equipments cooperate with each other to continuously process ore, reduce the interruption time in production, and further improve work efficiency.

[0029] 7. This process crushes and transports ore in situ, reducing scattering and loss during transportation, improving the recovery rate and comprehensive utilization rate of ore, and meeting the requirements of industry standards for full utilization of resources.

[0030] 8. This technology can effectively operate on different mine quarrying faces, including top quarrying faces and mountain quarrying faces. It uses the height difference of the mountain to transport materials, making full use of natural conditions and making transportation smoother.

[0031] 9. This process is pollution-free. When the mining is completed, it will be a whole piece of flat land, and there will be no equipment-related concrete structures (construction solid waste) on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The process of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 2 The process of the present invention is shown in FIG. Figure 2 ;

[0034] Figure 3 The process of the present invention is shown in FIG. Figure 3 ;

[0035] Figure 4 It is a front view of the present invention;

[0036] Figure 5 A top view of the present invention;

[0037] Figure 6 is a side view of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the power feed roller and the crushing load-bearing bottom plate at the upper part of the concave section;

[0039] Figure 8 It is a schematic diagram of the top view of the power feed roller and the crushing load-bearing bottom plate on the upper part of the concave section;

[0040] Fig. 9 It is a cross-sectional view of the upper power feed roller and the crushing load-bearing bottom plate of the concave section;

[0041] Fig.10 It is a schematic diagram of the structure of an impact roller crushing device;

[0042] Fig.11 It is a schematic diagram of the roller and breaker structure;

[0043] Fig.12 It is a schematic diagram of the working state of the present invention.

[0044] Numbers in the figure:

[0045] a. Crawler impact roller crusher, b. Mining quarrying face, c. Crawler mobile belt conveyor, c-1. Crawler drive base, c-2. Conveyor belt conveyor body, d. Long-distance belt conveyor, e. Ryan crusher, 1. Crawler drive unit, 2. Impact roller crushing device, 3. Heavy chain scraper conveyor, 301. Feeding section, 302. Concave section, 303. Discharging section, 4. Support frame, 5. Power feed roller, 6. Spiral guide rail, 7. Crushing load-bearing bottom plate, 8. Casing, 9. Roller, 10, crushing chamber, 11, driving motor, 12, hammer, 13, feed port, 12-1, front hammer, 14, supporting trough, 15, material baffle, 16, high-strength wear-resistant chain ring, 17, scraper, 18, driving sprocket, 19, redirecting sprocket, 20, upper edge of power feed roller, 21, reinforcing rib plate, 22, first plane, 23, elastic component, 24, bearing plate, 25, fixed pile, 29, discharge port hammer, 30, longitudinal limit nut, 31, upper edge line of feed end. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0047] like Figures 1 to 12 As shown, a mobile head-stage processing process for in-situ ore in a stepped mine quarrying working face comprises: a crawler impact roller crusher a is set in-situ at the mine quarrying working face, the crawler impact roller crusher a comprises a crawler drive part 1, a heavy chain scraper conveyor 3 connected to the crawler drive part 1, and an impact roller crushing device 2 arranged above the heavy chain scraper conveyor 3;

[0048] The crawler impact roller crusher a receives, transports and crushes the in-situ ore mined on the quarrying working surface b of the mine;

[0049] A plurality of crawler mobile belt conveyors c, the crawler mobile belt conveyors c comprising a movable crawler drive base c-1 and a conveyor belt conveyor body c-2 arranged thereon, the plurality of crawler mobile belt conveyors c being connected end to end to convey materials;

[0050] The mine quarrying working face b includes a top quarrying working face set at the top of the mountain and a stepped mountain quarrying working face set at the bottom of the mountain top;

[0051] The tail end of the crawler mobile belt conveyor c transports materials to the edge of the mine quarrying working face b, and utilizes the height difference of the mountain to make the transported materials roll down from the mine quarrying working face b to the transfer bin at the foot of the mountain through a chute or vertical shaft, or directly transport them to the transfer bin at the foot of the mountain through a long-distance belt conveyor d. A belt conveyor is set under the transfer bin to transport the ore to the fine crushing workshop for crushing.

[0052] Compared with the related art, the in-situ ore mobile head section processing process for the stepped mine quarrying working face provided in this embodiment has the following beneficial effects:

[0053] 1. The process of the present invention adopts a crawler-type impact roller crusher for the first crushing, with low-profile loading, no need to design an unloading platform, almost no infrastructure cost, and much lower height than the traditional silo plus feeder loading form.

[0054] 2. The crawler mobile belt conveyor unit in this process can be arbitrarily increased or decreased, combined, and arranged according to the distance between the initial mining position and the final mining position, with high flexibility and strong adaptability.

[0055] 3. This process sets up a crawler impact roller crusher on site at the quarrying face of the mine to directly crush the ore on site without the need for shoveling and long-distance transportation, greatly reducing dependence on fuel and reducing fuel consumption costs.

[0056] 4. All equipment in this process adopts electric direct drive, such as electric shovel loading, electric drive crawler walking, electric drive crusher crushing, etc., using electricity instead of oil to avoid the problem of increased mining costs caused by fuel shortages; and there is no need to reserve fuel on site, reducing safety hazards. Multiple equipment work in coordination, improving energy utilization efficiency, and overall reducing the energy consumption cost of the mining process.

[0057] 5. The process crushing device is directly set up on the quarrying working face. The mined ore can be crushed immediately and then quickly transported by the crawler mobile belt conveyor, which greatly shortens the process and improves production efficiency. In addition, with step-by-step mining, the previous mining face can be easily moved down to the next mining face for continued crushing, which has high production continuity and efficiency.

[0058] 6. The crawler impact roller crusher and crawler mobile belt conveyor of this process can realize continuous operation without being restricted by the scheduling of shovel loading and transportation vehicles. Multiple equipments cooperate with each other to continuously process ore, reduce the interruption time in production, and further improve work efficiency.

[0059] 7. This process crushes and transports ore in situ, reducing scattering and loss during transportation, improving the recovery rate and comprehensive utilization rate of ore, and meeting the requirements of industry standards for full utilization of resources.

[0060] 8. This technology can effectively operate on different mine quarrying faces, including top quarrying faces and mountain quarrying faces. It uses the height difference of the mountain to transport materials, making full use of natural conditions and making transportation smoother.

[0061] 9. This process is pollution-free. When the mining is completed, it will be a whole piece of flat land, and there will be no equipment-related concrete structures (construction solid waste) on site.

[0062] In other specific embodiments, the heavy chain scraper conveyor 3 specifically includes an integrated feed section 301, a concave section 302 and a discharge section 303. The feed section 301 is arranged in front of the impact roller crusher 2 for receiving raw materials; the discharge section 303 is arranged behind the impact roller crusher 2 for discharging crushed materials; and the concave section 302 is arranged below the impact roller crusher 2 for supporting and conveying materials. This design enables the conveyor to withstand direct feeding of in-situ coarse ore after blasting, effectively convey materials to the impact roller crusher 2, and output the crushed materials in an integrated manner.

[0063] A support frame 4 is provided on the support trough body of the concave section 302, and a plurality of parallel power feed rollers 5 are arranged in sequence on the support frame from the feeding direction to the discharging direction. The power feed roller is mainly composed of an outer roller, a shaft, a bearing, a driving device and a supporting structure. The outer roller is cylindrical, and the driving device is composed of a motor, a reducer, a coupling, etc., which provides rotational power for the outer roller. A spiral guide rail 6 is provided on the circumference of the outer roller of the power feed roller 5 to guide in the feeding direction, so that the material can form a gradient feeding mode during the conveying process, that is, large stones are fed on one side and small stones are fed on the other side. This design not only improves the crushing efficiency, but also reduces the occurrence of material blockage.

[0064] The upper surface of the power feeding roller 5 is not higher than the upper conveying plane of the heavy chain scraper conveyor to ensure smooth material transportation. A crushing load-bearing bottom plate 7 is connected to the discharge rear of the power feeding roller 5. The crushing load-bearing bottom plate 7 is placed below the impact roller crushing device 2 to withstand the impact force during the crushing process; the crushing load-bearing bottom plate 7 is connected to the support trough body through the support frame 4, and is elastically connected relative to the support trough body along the feeding and discharging direction to reduce the reverse resistance and impact damage to the heavy chain scraper conveyor; a discharge section 303 is set behind the crushing load-bearing bottom plate 7.

[0065] The impact roller crusher 2 includes a casing 8 and a roller 9, as well as a crushing chamber 10, a feed port, a discharge shield and other components. The roller 9 is installed on the supporting trough body through a bearing seat. The crushing load-bearing bottom plate 7 and the inner cavity of the casing 8 are combined to form a crushing chamber 10 for accommodating and crushing materials. The roller 9 is placed in the crushing chamber 10 above the crushing load-bearing bottom plate 7. The impact roller crusher 2 includes a driving motor 11. The driving motor 11 drives the V-belt pulley at the end of the roller 9 to rotate through a V-belt, thereby driving the roller 9 to rotate at a high speed, and then the hammer head 12 is used to efficiently chisel and squeeze the material.

[0066] The feed port 13 of the impact roller crusher 2 is placed above the crushing load-bearing bottom plate 7. The distance between the outer edge line of the front hammer 12-1 of the roller 9 that first eats the material and the vertical projection of the front hammer 12-1 on the crushing load-bearing bottom plate 7 and the front edge of the crushing load-bearing bottom plate 7 is not greater than half of the vertical projection distance between the front hammer 12-1 and the crushing load-bearing bottom plate 7. This design ensures that the material can smoothly enter the crushing chamber 10 for crushing. If a large stone occasionally blocks the feed port on one side due to its large size, it can also be cleared by itself, reducing the frequency of shutdowns for material dredging.

[0067] In addition, the crawler crushing device is equipped with a heavy-duty chain scraper conveyor 3, whose structure includes a trough body, a material baffle 15, a high-strength wear-resistant chain ring 16, a scraper 17 and other components. The motor is connected to the reducer through a high-speed shaft coupling to drive the drive sprocket 18 to rotate. The trough body includes a supporting trough body 14 arranged on both sides, and the supporting trough body is connected to the bearing frame of the crawler drive unit 1. A driving sprocket 18 is arranged at one end of the trough bodies on both sides, and a plurality of redirecting sprockets 19 are respectively arranged at the other end and the corner of the concave section. High-strength wear-resistant chain rings 16 are sleeved on the driving sprocket 18 and the redirecting sprocket 19, and scrapers 17 are evenly spaced on the high-strength wear-resistant chain ring 16. The main shaft of the driving sprocket 18 is connected to the motor drive assembly to provide power for the operation of the conveyor, thereby driving the scraper 17 to move on the high-strength wear-resistant chain ring 16 to achieve smooth transportation of materials.

[0068] The heavy chain scraper conveyor 3 can carry the direct loading of the raw ore after blasting, and transport it to the front of the feed port, and continuously transport the material to the driving feed roller through the scraper 17 and the stone push stone. Under the rolling and spiral guiding action of the driving feed roller, the heavier bulk material stays at one end of the driving feed roller and pushes toward the feed port, while the relatively small bulk material is driven toward the feed port and moves toward the tail end of the feed spiral, thus forming a gradient feeding mode in which large stones are fed on one side and small stones are fed on the other side. When a large stone at one end blocks one side of the feed port, the small and medium-sized stones on the other side can still be continuously fed and crushed, thereby improving the crushing efficiency.

[0069] A crushing load-bearing bottom plate 7 is provided to prevent the crushing impact force from acting on the upper transmission surface of the conveying device, thereby reducing the reverse resistance and impact force damage to the conveying device and reducing the burning and damage of the driving roller or driving sprocket 18 of the conveying device.

[0070] The situation of blockage by large pieces of materials is generally that the longitudinal dimension of the materials is larger than the height of the frontmost feeding hammer of the crushing device roller 9, making it difficult for the hammer to feed the materials. The crushing device of the present invention is provided with a front extension plate of the crushing load-bearing bottom plate 7 of suitable size. If the lateral dimension of the materials along the feeding direction is small, most of them are pushed onto the crushing load-bearing plate, and the longitudinal dimension is large, making it difficult for the frontmost hammer 12-1 to feed the materials. In this case, the materials are long strip-like materials, and the continuous feeding of the subsequent driving feed roller pushes the lower end of the long strip-like materials, thereby causing them to turn over to the narrow end for feeding, thus solving the blockage problem by themselves. If the lateral dimension of the materials is also large, a larger part of them will be placed on the driving roller, and the turning force of the driving roller will facilitate the turning of the materials to a certain extent, so that the materials will be fed by the hammer 12 in the direction of the size that meets the feeding size, thus solving the blockage problem by themselves to a certain extent.

[0071] The crawler drive unit 1 serves as a bearing base, making the equipment easy to move and adjust the workstation, flexible in the operation scene, and improving the adaptability of the work site. It is also more suitable for flexible in-situ operation on the quarrying face in the mine. In conjunction with the heavy-duty chain scraper conveyor 3, the in-situ feeding, crushing and discharging of the quarrying face in the mine can be completed by integrated drive, simplifying the types of power equipment and reducing the tedious problems of various equipment connection, debugging and infrastructure construction. In terms of motor drive, both the conveying device and the crushing device are driven by 10kv high-voltage permanent magnet motors, with significant energy-saving effects. The application of the PLC frequency conversion control system realizes the precise adjustment of the feeding speed of the heavy-duty chain scraper conveyor 3 and the height of the roller 9, further improving the performance and efficiency of the equipment, reducing the high-energy-consuming transportation link of the raw ore, and contributing to energy conservation and emission reduction, more environmentally friendly and more efficient.

[0072] In other specific embodiments, the crushing load-bearing bottom plate 7 is set in a slightly inclined direction with a low feeding end and a high discharging end, and the acute angle between it and the horizontal plane is not greater than 5 degrees. This design helps to expand the feeding port and increase the effective crushing path, thereby improving the crushing ratio. At the same time, the upper edge line 31 of the feeding end of the crushing load-bearing bottom plate 7 is higher than the upper edge 20 of the power feed roller, and the height difference is not greater than one-tenth of the feeding port size of the impact roller crusher device 2. This design enables the material to roll from a slightly lower position to the slightly higher crushing load-bearing bottom plate 7 during the conveying process, and push the material in a small angle stone-pushing-stone manner, which helps to convey the material and push the front material from the bottom in sequence. On the one hand, it reduces the deposited material, improves the pushing activity, reduces the padding at the feeding port, and reduces the blockage; on the other hand, a padding layer is generated in the crushing chamber 10 to protect the crushing load-bearing bottom plate 7, and reduces the wear of the equipment by hitting stones and grinding stones in the crushing chamber 10, thereby improving the crushing ratio.

[0073] In other specific embodiments, a reinforcing rib plate 21 is transversely arranged below the crushing load-bearing bottom plate 7, and the reinforcing rib plate 21 includes a first plane 22 that is arranged transversely and perpendicular to the feeding and discharging direction, the first plane 22 is connected to an elastic component 23 whose elastic force is perpendicular to it, and the elastic component is connected to a bearing plate 24, and the two ends of the bearing plate 24 extend from the two sides of the concave section and are connected to fixed piles 25, and the fixed piles 25 are used to be inserted into the underground of the quarrying working surface for pile fixing, and the fixed piles 25 can penetrate deep into the underground of the quarrying working surface to provide a stable support for the equipment. This embodiment helps to increase the strength of the crushing load-bearing bottom plate 7, and maximizes the lateral impact force of the crushing hammer head 12 to the fixed piles 25 and then to the working ground for absorption through the elastic component 23, reducing the lateral impact on the supporting trough of the heavy chain scraper conveyor 3, and also reducing the lateral impact on the base of the crawler drive unit. The crushing equipment with the same processing capacity helps to lighten the load-bearing and supporting equipment, reduce costs, optimize equipment performance, and extend service life.

[0074] In other specific embodiments, the number of reinforcing ribs 21 can also be adjusted. In a crushing device with a small processing capacity, only one reinforcing rib 21 is sufficient; while in a crushing device with a large processing capacity, multiple reinforcing ribs 21 are used to optimize the impact resistance and stability of the device.

[0075] like Figure 5 As shown, at least one reinforcing rib plate 21 is provided, and the reinforcing rib plate 21 is provided on the plumb bob plane where the frontmost hammer head 12-1 of the roller 9 is located. The force acting on the stone by the frontmost hammer head 12-1 of the roller 9 is mostly in the direction of vertically downward chiseling force, and the impact force on the crushing load-bearing bottom plate 7 is the greatest. Therefore, the reinforcing rib plate 21 is provided here to optimize the impact resistance of the equipment. In the subsequent downward action of the hammer head 12, the chiseling force and the more persistent extrusion force and abrasive force act together, and the force in the vertical downward direction gradually weakens, and the force acting on the rear of the discharge gradually increases. Therefore, in conjunction with the elastic component 23 in the feeding and discharging direction, the persistent lateral force is elastically and persistently softened, which makes it easier to spread, persist and homogenize the force acting on the material, which is conducive to the uniform crushing of the material and the crushing of smaller particles.

[0076] In other specific embodiments, at least three reinforcing ribs 21 are provided, namely, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib. The first reinforcing rib is provided on the plumb plane where the frontmost hammer 12-1 of the roller 9 is located, the third reinforcing rib is provided on the plumb plane of the narrowest discharge port hammer 29, and the second reinforcing rib is provided at the midline position between the first reinforcing rib and the second reinforcing rib. The reinforcing ribs 21 and the corresponding elastic components 23 provided at the three optimal positions of front, middle and rear optimize the performance.

[0077] In this embodiment, the elastic component 23 uses a leaf spring structure. The leaf spring is a continuous entity structure. While providing elastic buffering for the crushing load-bearing bottom plate 7 in the feeding and discharging direction, it also further cooperates to provide strength reinforcement in the vertical plane direction, further improving the impact resistance. Multiple groups of fixed studs (not shown) are arranged on both sides of the upper side of the support frame 4, and connecting waist-shaped holes (not shown) are arranged on both sides of the corresponding position of the crushing load-bearing bottom plate 7. The waist-shaped holes are sleeved on the fixed studs, and longitudinal limit nuts 30 are arranged on the upper part of the fixed studs. Multiple groups of fixed studs are used to provide stable support points to ensure that the crushing load-bearing bottom plate 7 is fixed in the correct position. The connecting waist-shaped holes on both sides of the crushing load-bearing bottom plate 7 allow the bottom plate of the crushing load-bearing bottom plate 7 to be fine-tuned within a certain range, and cooperate with the elastic component 23 to perform elastic fine-tuning in the feeding and discharging direction. The longitudinal limit nut 30 is installed on the upper part of the fixed stud to lock the position, limit the longitudinal movement of the crushing load-bearing bottom plate 7, prevent position deviation during operation, and ensure the stability and safety of the equipment. The discharging section is connected to a roller device for conveying and screening the discharging material. An elastic expansion gap is arranged between the front of the crushing load-bearing bottom plate 7 and the power feeding roller 5, and an elastic expansion gap is arranged between the rear of the crushing load-bearing bottom plate 7 and the discharging section to prevent interference and collision.

[0078] In other specific embodiments, the primary crushing particle size of the crawler impact roller crusher a is 0-350 mm. The subsequent process of the crawler impact roller crusher a is provided with a Lane crusher e and several crawler mobile belt conveyors c. The process can be arbitrarily changed and arranged according to different mining locations. Several crawler mobile belt conveyors c can be placed in front of the secondary crusher or behind the secondary crusher. The secondary crushing adopts the Lane crusher e with screening function, and the discharge particle size can be controlled within 0-120 mm without a vibrating screen. The particle size can be adjusted according to the design.

[0079] This embodiment enables the entire device to be flexibly moved and adapted to the complex environment of the mine quarrying face. The crawler crushing station and its overlapping crawler belt conveyor that constitute the first stage crushing process can be freely moved, and the conveying distance can be easily achieved by adding or reducing the mobile belt conveyor. It has excellent station mobility and adaptability to the work site. It does not require various preliminary preparations required before the fixed crushing station is installed. The station adjustment can be completed in a short time and can enter the working state at any time.

[0080] The crawler crushing device of this embodiment fully considers strength, stability, energy saving, adaptability and material handling efficiency in design and mechanical structure, and realizes efficient and reliable in-situ rough crushing operation in mines. It not only improves the performance and efficiency of the equipment, but also reduces the operating cost and maintenance difficulty, bringing significant economic benefits and use value to users.

[0081] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mobile head-stage processing process for in-situ ore in a stepped mine quarrying face, characterized in that: include: A crawler impact roller crusher is set in situ at the quarrying working face of the mine, wherein the crawler impact roller crusher comprises a crawler drive unit, a heavy chain scraper conveyor connected to the crawler drive unit, and an impact roller crushing device arranged above the heavy chain scraper conveyor; The crawler impact roller crusher receives, transports and crushes the in-situ ore mined on the quarrying working surface of the mine; A plurality of crawler mobile belt conveyors, each crawler mobile belt conveyor comprising a movable crawler drive base and a conveyor belt conveyor body arranged thereon, wherein the plurality of crawler mobile belt conveyors are connected end to end to convey materials; The mine quarrying working face includes a top quarrying working face arranged at the top of the mountain and a mid-mountain quarrying working face arranged at the lower part of the mountain top; The tail end of the crawler mobile belt conveyor transports the materials to the edge of the mine quarrying working face, and utilizes the height difference of the mountain to make the transported materials roll down the mountain from the mine quarrying working face to the transfer warehouse at the foot of the mountain, or directly transport them to the transfer warehouse at the foot of the mountain using a long-distance belt conveyor.

2. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 1 is characterized by: The heavy-duty chain scraper conveyor comprises an integrally arranged feeding section, a concave section and a discharging section, wherein the feeding section is arranged in front of the impact roller crusher, the discharging section is arranged behind the impact roller crusher, and the concave section is arranged below the impact roller crusher; a support frame is arranged on the supporting trough body of the concave section, and the support frame is provided with a plurality of parallelly arranged power feed rollers in sequence from the feeding direction to the discharging direction, and the outer roller circumference of the power feed roller is provided with a spiral guide rail guiding in the feeding direction, and the upper surface of the power feed roller is not higher than the upper conveying plane of the heavy-duty chain scraper conveyor; a crushing load-bearing bottom plate is arranged in connection with the discharging rear of the power feed roller, and the crushing load-bearing bottom plate is placed below the impact roller crusher; the crushing load-bearing bottom plate is connected to the supporting trough body through a support frame, and is elastically connected relative to the supporting trough body along the feeding and discharging direction; the discharging section is arranged behind the crushing load-bearing bottom plate; The impact roller crushing device comprises a housing and a roller, wherein the roller is mounted on the supporting trough body through a bearing seat, so that the roller is placed in a crushing cavity above the crushing load-bearing bottom plate, and the impact roller crushing device comprises a driving motor, wherein the driving motor drives the V-belt pulley at the end of the roller to rotate through a V-belt, thereby driving the roller to perform high-speed rotational motion; the crushing load-bearing bottom plate and the inner cavity of the housing are combined to enclose a crushing cavity; The feed port of the impact roller crusher is placed above the crushing load-bearing bottom plate, and the distance between the outer edge line of the frontmost hammer head of the roller that first eats material and the vertical projection of the crushing load-bearing bottom plate and the frontmost feeding outer edge of the crushing load-bearing bottom plate is not greater than one half of the vertical projection distance of the frontmost hammer head from the crushing load-bearing bottom plate.

3. The in-situ ore mobile head section processing process for the stepped mine quarrying working face according to claim 2 is characterized by: The heavy-duty chain scraper conveyor includes the support trough bodies arranged on both sides, the support trough bodies are connected to the carrying frame of the crawler drive part, a driving sprocket is arranged at one end of the trough bodies on both sides, and a plurality of redirecting sprockets are respectively arranged at the other end and the corner of the concave section, high-strength wear-resistant chain rings are sleeved on the driving sprocket and the redirecting sprocket, scrapers are evenly spaced on the high-strength wear-resistant chain rings, and the main shaft of the driving sprocket is connected to the motor drive assembly.

4. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 2 is characterized by: The crushing load-bearing bottom plate is arranged in a slightly inclined direction with a low feeding end and a high discharging end, and the acute angle between it and the horizontal plane is no more than 5 degrees. The upper edge line of the feeding end of the crushing load-bearing bottom plate is higher than the upper edge of the power feed roller, and the height difference is no more than one tenth of the feeding port size of the impact roller crusher device.

5. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 2 is characterized by: A reinforcing rib plate is laterally arranged below the crushing load-bearing bottom plate, and the reinforcing rib plate includes a first plane which is laterally arranged and perpendicular to the feeding and discharging direction, the first plane is connected to an elastic component whose elastic force is perpendicular to it, the elastic component is connected to a bearing plate, two ends of the bearing plate extend from both sides of the concave section and are connected to fixed piles, and the fixed piles are used to be inserted into the underground of the quarrying working surface for pile fixing.

6. The in-situ ore mobile head section processing process for the stepped mine quarrying working face according to claim 5 is characterized by: The number of the reinforcing rib plate is at least one, and the reinforcing rib plate is arranged on the plumb plane where the frontmost hammer head of the roller is located.

7. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 5 is characterized by: The elastic component is a leaf spring.

8. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 2 is characterized by: A plurality of sets of fixing studs are arranged on both sides above the support frame, connecting waist-shaped holes are arranged on both sides of the corresponding position of the crushing load-bearing bottom plate, the waist-shaped holes are sleeved on the fixing studs, and longitudinal limiting nuts are arranged on the upper parts of the fixing studs.

9. The mobile head-stage in-situ ore treatment process for a stepped mine quarrying face according to claim 2 is characterized by: The discharging section is connected to the roller device and the discharging conveying belt machine.

10. The mobile head-stage in-situ ore treatment process for a stepped mine quarrying face according to claim 1, characterized in that: A subsequent process of the crawler impact roller crusher is to set a Lane crusher, the discharge particle size of the Lane crusher is 0-120mm, and the first crushing discharge particle size of the crawler impact roller crusher is 0-350mm.

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