A stepped in-situ ore mobile first-stage treatment process for a mine quarrying working face

Abstract

The present invention discloses a mobile head section processing process for in-situ ore of a stepped mine quarrying working face, including setting a crawler impact roller crusher in-situ on the mine quarrying working face, the crawler impact roller crusher receiving, conveying and crushing the in-situ ore mined on the mine quarrying working face; a plurality of crawler mobile belt conveyors, the crawler mobile belt conveyors including a mobile crawler drive base and a conveyor belt conveyor body arranged thereon, 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 stepped mountain quarrying working face arranged at the bottom of the mountain; utilizing the height difference of the mountain, the crawler mobile belt conveyor makes the conveyed materials roll down from the mine quarrying working face along the mountain or directly transport them down the mountain using a long-distance belt conveyor. The present invention combines the head section crushing work with the quarrying work, reduces the intermediate transportation links, saves energy consumption, reduces costs, has high flexibility and high efficiency.

Description

Technical Field

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

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

[0003] However, in the existing process of open-pit mining and preparation of manufactured sand, the mining work area and the primary section crushing work area are usually set separately. This traditional mining mode has a certain gap from the goals of high efficiency, energy conservation, and full utilization of resources pursued by industry standards and specifications. In the traditional mode, the raw ore mined first needs to undergo a loading operation, and equipment such as loaders is used to load the ore from the mining site onto transport vehicles. Then, the transport vehicles transport the raw ore to the primary section crushing work area for subsequent processing. This series of operations not only makes it difficult to meet the increasingly strict standard requirements of the industry in terms of fuel consumption and energy consumption, but also increases the production cost of enterprises. Moreover, during the transportation process, there may be scattering and loss of the raw ore, affecting the recovery rate and comprehensive utilization rate of the ore, which is contrary to the requirement of full utilization of resources in industry standards. In addition, the separately set work areas result in low work efficiency, affecting the progress of the entire production process and being unfavorable for the industry's pursuit of high-efficiency production.

[0004] In summary, in the existing open-pit mining and preparation of manufactured sand ore, there is an urgent need for a new technical solution to solve these problems in order to better conform to the development trend and standards of the industry. Summary of the Invention

[0005] In view of the above background art, the present invention provides a new process in which the primary section crushing work area is set on the ore quarry working face, combining the primary section crushing work with the quarrying work, reducing the intermediate transportation link, saving energy consumption, saving production costs, and having high flexibility, good adaptability, and high production efficiency.

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

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

[0008] Multiple crawler mobile belt conveyors, the crawler mobile belt conveyors including mobile crawler drive bases, and conveyor belt machine bodies arranged thereon, and the multiple 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 middle quarrying working face arranged below the top of the mountain;

[0010] The tail end of the crawler mobile belt conveyor conveys materials to the edge of the mine quarrying working face, and by using the height difference of the mountain body, the conveyed materials roll down the mountain along the mountain slope to a transfer bin below or are directly transported to the transfer bin by a long-distance belt conveyor down the mountain.

[0011] Preferably, the heavy-duty chain scraper conveyor includes an integrally arranged feeding section, a concave section, and a discharging section. The feeding section is arranged in front of the impact roller crushing device, the discharging section is arranged behind the impact roller crushing device, and the concave section is arranged below the impact roller crushing device; a support frame is arranged on the support trough body of the concave section, and the support frame is sequentially provided with a plurality of power feeding rollers arranged in parallel in the feeding-to-discharging direction. A spiral guide rail guiding towards the feeding direction is arranged on the outer circumference of the outer roller of the power feeding roller, and the upper surface of the power feeding roller is not higher than the upper conveying plane of the heavy-duty chain scraper conveyor; a crushing load-bearing bottom plate is connected behind the discharging of the power feeding roller, and the crushing load-bearing bottom plate is placed below the impact roller crushing device; the crushing load-bearing bottom plate is connected to the support trough body through the support frame and is elastically connected to the support trough body along the feeding-to-discharging direction; the discharging section is arranged behind the crushing load-bearing bottom plate;

[0012] The impact roller crushing device includes a casing and a roller. The roller is installed on the support trough through a bearing seat, so that the roller is placed in the crushing cavity above the crushing load-bearing bottom plate. The impact roller crushing device includes a driving motor. 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 a high-speed rotational motion. The crushing load-bearing bottom plate and the inner cavity of the casing are combined to enclose a crushing cavity.

[0013] The feed inlet of the impact roller crushing device is located above the crushing load-bearing bottom plate. The distance between the outer edge line of the foremost hammer head of the roller that first eats the material and the foremost side eating outer edge of the crushing load-bearing bottom plate in the vertical projection on the crushing load-bearing bottom plate is not greater than half of the vertical projection distance from the foremost hammer head to the crushing load-bearing bottom plate.

[0014] Preferably, the heavy-duty chain scraper conveyor includes the support troughs arranged on both sides. The support troughs are connected to the bearing frame of the crawler driving part. Driving sprockets are arranged at one ends of the two troughs on both sides, and a plurality of redirecting sprockets are respectively arranged at the other ends and the corners of the concave section. High-strength wear-resistant chain rings are sleeved on the driving sprockets and the redirecting sprockets. Scrapers are evenly spaced on the high-strength wear-resistant chain rings. The main shaft of the driving sprocket is connected to the motor driving assembly.

[0015] Preferably, the crushing load-bearing bottom plate is arranged in a slightly inclined direction with the feeding end low and the discharging end high. The acute angle formed by it and the horizontal plane is not greater 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 feeding roller, and the height difference is not greater than one-tenth of the size of the feed inlet of the impact roller crusher device.

[0016] Preferably, a reinforcing rib plate is transversely arranged below the crushing load-bearing bottom plate. The reinforcing rib plate includes a first plane that extends horizontally and is perpendicular to the feeding and discharging direction. The first plane is connected to an elastic component with an elastic force 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. The fixed piles are used to insert into the ground of the quarry working face for pile fixation.

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

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

[0019] Preferably, a plurality of fixing studs are arranged on both sides above the support frame. Connecting waist-shaped holes are arranged on both sides at the corresponding positions of the crushing load-bearing bottom plate. The waist-shaped holes are sleeved on the fixing studs, and longitudinal limit nuts are arranged on the upper parts of the fixing studs.

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

[0021] Preferably, a Ryan crusher is arranged in the subsequent process of the crawler impact roller crusher. The discharging particle size of the Ryan crusher is 0 - 120 mm, and the primary crushing discharging particle size of the crawler impact roller crusher is 0 - 350 mm.

[0022] Compared with the related technologies, the stepped in-situ ore mobile primary treatment process for mine quarrying faces provided by the present invention has the following beneficial effects:

[0023] 1. In the primary crushing of the process of the present invention, a crawler impact roller crusher is adopted for low-level feeding. There is no need to design an ore unloading platform, and there is almost no infrastructure cost. The height is greatly reduced compared with the traditional feeding form of a bunker plus a feeder.

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

[0025] 3. In this process, a crawler impact roller crusher is arranged in-situ on the mine quarrying face to directly crush the in-situ ore, eliminating the need for shoveling and long-distance transportation, greatly reducing the dependence on fuel and lowering the fuel consumption cost.

[0026] 4. All equipment in this process adopts direct electric drive, such as electric shovel feeding, electric drive crawler walking, and electric drive crusher crushing, etc. The working mode of using electricity instead of oil is adopted to avoid the problem of increased mining cost caused by fuel shortage; and there is no need to store fuel on-site, reducing potential safety hazards. Multiple devices work together, improving the energy utilization efficiency and overall reducing the energy consumption cost during the mining process.

[0027] 5. The crushing device in this process is directly arranged on the quarrying face. The mined ore can be immediately crushed and then quickly transported through the crawler mobile belt conveyor, greatly shortening the process flow and improving the production efficiency. Moreover, in stepped mining, after one mining face is completed, it can be conveniently moved down to the next mining face for continuous crushing, with high production continuity and efficiency.

[0028] 6. The crawler impact roller crusher and the crawler mobile belt conveyor in this process can achieve continuous operation, without being restricted by the scheduling of shoveling and transportation vehicles. Multiple devices cooperate with each other, enabling continuous ore processing, reducing the interruption time in production, and further improving the work efficiency.

[0029] 7. The ore in this process is crushed and transported in-situ, reducing the scattering and loss during transportation, improving the ore recovery rate and comprehensive utilization rate, and meeting the requirements of resource full utilization in industry standards.

[0030] 8. This process can effectively operate on different quarry working faces of mines, including the top quarry working face and the in-mountain quarry working face. By utilizing the elevation difference of the mountain body for material transportation, it makes full use of natural conditions and enables smoother transportation.

[0031] 9. This process belongs to a pollution-free process. After the mining of the mine is completed, it becomes a flat ground, and there will be no concrete structures (construction waste) related to any equipment on-site. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the process of the present invention Figure 1 ;

[0033] Figure 2 Schematic diagram of the process of the present invention Figure 2 ;

[0034] Figure 3 Schematic diagram of the process of the present invention Figure 3 ;

[0035] Figure 4 Front view of the present invention;

[0036] Figure 5 Top view of the present invention;

[0037] Figure 6 Side view of the present invention;

[0038] Figure 7 Schematic diagram of the structure of the upper power feeding roller and the crushing load-bearing bottom plate of the concave section;

[0039] Figure 8 Top view schematic diagram of the structure of the upper power feeding roller and the crushing load-bearing bottom plate of the concave section;

[0040] Figure 9 Cross-sectional view of the structure of the upper power feeding roller and the crushing load-bearing bottom plate of the concave section;

[0041] Figure 10 Schematic diagram of the structure of the impact type roller crusher;

[0042] Figure 11 Schematic diagram of the structure of the roller and the crushing hammer;

[0043] Figure 12 Schematic diagram of the working state of the present invention.

[0044] Reference numerals in the drawings:

[0045] a, Track impact roller crusher, b, Mine quarrying working face, c, Track mobile belt conveyor, c-1, Track drive base, c-2, Conveyor belt conveyor body, d, Long-distance belt conveyor, e, Ryan crusher, 1, Track drive unit, 2, Impact roller crushing device, 3, Heavy-duty chain scraper conveyor, 301, Feeding section, 302, Concave section, 303, Discharging section, 4, Support frame, 5, Power feeding roller, 6, Spiral guide rail, 7, Crushing load-bearing bottom plate, 8, Machine shell, 9, Roller, 10, Crushing chamber, 11, Driving motor, 12, Hammer head, 13, Feeding port, 12-1, Frontmost hammer head, 14, Support trough body, 15, Baffle plate, 16, High-strength wear-resistant chain link, 17, Scraper, 18, Driving sprocket, 19, Redirecting sprocket, 20, Upper edge of the power feeding roller, 21, Reinforcing rib plate, 22, First plane, 23, Elastic component, 24, Bearing plate, 25, Fixed pile, 29, Discharge port hammer head, 30, Longitudinal limit nut, 31, Upper edge line of the feeding end. Detailed implementation mode

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

[0047] As Figures 1 to 12 shown, a stepped mine quarrying working face in-situ ore mobile head section treatment process includes: in-situ setting a track impact roller crusher a on the mine quarrying working face, the track impact roller crusher a includes a track drive unit 1, a heavy-duty chain scraper conveyor 3 carried and connected by the track drive unit 1, and an impact roller crushing device 2 arranged above the heavy-duty chain scraper conveyor 3;

[0048] The track impact roller crusher a receives, conveys, and crushes the in-situ ore mined on the mine quarrying working face b;

[0049] Multiple track mobile belt conveyors c, the track mobile belt conveyor c includes a mobile track drive base c-1 and a conveyor belt conveyor body c-2 arranged thereon, and multiple track mobile belt conveyors c are connected end to end to convey materials;

[0050] The mine quarrying working face b includes a top quarrying working face arranged at the top of the mountain and a stepped middle quarrying working face arranged below the top of the mountain;

[0051] The rearmost part of the track mobile belt conveyor c conveys materials to the edge of the mine quarrying working face b. Utilizing the height difference of the mountain body, the conveyed materials are dropped from the mine quarrying working face b along the mountain slope into the transfer bin below the mountain by means of a chute or a shaft, or directly transported to the transfer bin below the mountain by a long-distance belt conveyor d. A belt conveyor is arranged under the transfer bin to convey the ore to the fine crushing workshop for crushing.

[0052] Compared with related technologies, the stepped in-situ ore mobile head-section treatment process provided by this embodiment has the following beneficial effects:

[0053] 1. The primary crusher in the process of the present invention uses a crawler impact roller crusher with low-profile feeding. There is no need to design an ore unloading platform, and there is almost no infrastructure cost. The height is greatly reduced compared with the traditional feeding form of a bunker plus a feeder.

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

[0055] 3. In this process, a crawler impact roller crusher is set in-situ at the quarrying face of the mine, directly crushing the in-situ ore without the need for shoveling and long-distance transportation, greatly reducing the dependence on fuel and lowering the fuel consumption cost.

[0056] 4. All equipment in this process uses direct electric drive, such as electric shovel feeding, electric drive for crawler walking, and electric drive for crusher crushing, etc. The working mode of using electricity instead of oil avoids the problem of increased mining costs caused by fuel shortage; and there is no need to store fuel on-site, reducing safety hazards. Multiple devices work together, improving the energy utilization efficiency and overall reducing the energy consumption cost during the mining process.

[0057] 5. The crushing device in this process is directly set at the quarrying face. The mined ore can be immediately crushed and then quickly transported through the crawler mobile belt conveyor, greatly shortening the process flow and improving the production efficiency. Moreover, in stepped mining, after the completion of the previous mining face, it can be conveniently moved down to the next mining face for continuous crushing, with high production continuity and efficiency.

[0058] 6. The crawler impact roller crusher and the crawler mobile belt conveyor in this process can achieve continuous operation, without being restricted by the scheduling of shoveling and transportation vehicles. Multiple devices cooperate with each other, capable of continuously processing ore, reducing the interruption time in production, and further improving the work efficiency.

[0059] 7. The ore in this process is crushed and transported in-situ, reducing the scattering and loss during transportation, improving the recovery rate and comprehensive utilization rate of the ore, and meeting the requirements for full utilization of resources in industry standards.

[0060] 8. This process can effectively operate for different quarrying faces of mines, including the top quarrying face and the in-mountain quarrying face. Utilizing the height difference of the mountain for material transportation makes full use of natural conditions and makes the transportation smoother.

[0061] 9. This process is a pollution-free process. After the mining of the mine is completed, it becomes a flat ground, and there will be no concrete structures (construction waste) related to any equipment on site.

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

[0063] A support frame 4 is arranged on the support trough body of the concave section 302. The support frame is provided with a plurality of power feeding rollers 5 arranged in parallel in sequence from the feeding direction to the discharging direction. The power feeding roller is mainly composed of an outer roller, a shaft, a bearing, a driving device, and a support 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 guiding towards the feeding direction is arranged on the circumference of the outer roller of the power feeding roller 5, so that the materials can form a gradient feeding mode during the conveying process, that is, the large stones are fed on one side and the 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-duty chain scraper conveyor to ensure the smooth conveying of the materials. A crushing load-bearing bottom plate 7 is connected behind the discharging end of the power feeding roller 5. The crushing load-bearing bottom plate 7 is placed below the impact roller crusher 2 and is used to bear 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 to the support trough body along the feeding and discharging direction to reduce the reverse resistance and impact force damage to the heavy-duty chain scraper conveyor; the discharging section 303 is arranged behind the crushing load-bearing bottom plate 7.

[0065] The impact roller crusher 2 includes a machine shell 8 and a roller 9, and also includes components such as a crushing chamber 10, a feeding port, and a discharging shield. The roller 9 is installed on the support trough body through a bearing seat. The crushing load-bearing bottom plate 7 and the inner cavity of the machine shell 8 are combined to enclose the crushing chamber 10 for accommodating and crushing the 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 perform a high-speed rotational motion, and then efficiently chiseling and squeezing the materials through the hammer head 12.

[0066] The feed inlet 13 of the impact roller crushing device 2 is placed above the crushing load-bearing bottom plate 7. The outer edge line of the foremost hammer head 12-1 of the roller 9 that first feeds on the material has a distance from the frontmost feeding outer edge of the crushing load-bearing bottom plate 7 in the vertical projection on the crushing load-bearing bottom plate 7 that is not greater than half of the vertical projection distance of the foremost hammer head 12-1 from the crushing load-bearing bottom plate 7. This design ensures that the material can smoothly enter the crushing chamber 10 for crushing. Occasionally, when large stones block one side of the feeding port due to their large size, they can be self-cleared and dredged, reducing the frequency of shutdown for material dredging.

[0067] In addition, the heavy-duty chain scraper conveyor 3 equipped with the crawler-type crushing device includes multiple components such as a trough body, a baffle plate 15, high-strength wear-resistant chain links 16, and scraper plates 17. The motor is connected to the reducer through a high-speed shaft coupling, and the driving sprocket 18 is assembled and rotated. The trough body includes support trough bodies 14 arranged on both sides, and the support trough bodies are connected to the load-bearing frame of the crawler-type driving part 1. The driving sprocket 18 is arranged at one end of the trough bodies on both sides, and multiple redirecting sprockets 19 are respectively arranged at the other end and the corner of the concave section. The high-strength wear-resistant chain links 16 are sleeved on the driving sprocket 18 and the redirecting sprockets 19, and the scraper plates 17 are evenly spaced on the high-strength wear-resistant chain links 16. The main shaft of the driving sprocket 18 is connected to the motor driving assembly, providing power for the operation of the conveyor, thereby driving the scraper plates 17 to move on the high-strength wear-resistant chain links 16 to achieve smooth material transportation.

[0068] The heavy-duty chain scraper conveyor 3 can carry the directly loaded in-situ coarse ore after blasting and transport it to the front of the feed inlet. Through the scraper plates 17 and the stone-pushing-stone method, the material is continuously transported to the driving feed roller. Under the rolling and spiral guiding effects of the driving feed roller, the heavier large pieces of material remain at one end of the driving feed roller and are pushed towards the feed inlet, while the relatively smaller pieces of material are driven towards the feed inlet and move and distribute towards the end of the feed screw, thereby forming a gradient feeding mode where large stones are fed on one side and small stones are fed on the other side. Furthermore, when one side of the feed inlet is blocked by large stones at one end, the medium and small stones on the other side can still be continuously input for crushing, improving the crushing efficiency.

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

[0070] In the case of blockage by large pieces of materials, generally, the longitudinal dimension of the materials is greater than the height of the front feeding hammerhead of the roller 9 of the crushing device, making it difficult for the hammerhead to feed. The crushing device of the present invention is provided with a front extension plate of the crushing load-bearing bottom plate 7 with a suitable size. If the transverse dimension of the materials along the feeding direction is small, most of them are pushed onto the crushing load-bearing plate. If the longitudinal dimension is large and the frontmost hammerhead 12-1 has difficulty feeding, then the materials are strip-shaped materials. During the continuous feeding of the subsequent driving conveyor roller, the lower end of the strip-shaped materials is pushed, causing them to turn over so that the narrow end is fed, thus solving the blockage problem by itself. If the transverse dimension is also large, a large part of the materials will be placed on the driving roller. Under the flipping force of the driving roller, it is beneficial to the flipping of the materials to a certain extent. When the materials reach a size direction suitable for feeding, they will be eaten by the hammerhead 12, also solving the blockage problem to a certain extent by itself.

[0071] The crawler-type driving part 1 serves as a bearing base, making the equipment easy to move and adjust the working position, with a flexible operation scenario and improved adaptability to the working site. It is also more suitable for flexible in-situ operation on the quarrying working face of a mine. Cooperating with the heavy-duty chain scraper conveyor 3, it realizes the integrated driving of in-situ feeding, crushing, and discharging on the quarrying working face of a mine, simplifies the types of power equipment, and reduces the cumbersome problems of connecting, debugging, and infrastructure of various equipment. 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. Through the application of the PLC frequency conversion control system, the feeding speed of the heavy-duty chain scraper conveyor 3 and the height of the roller 9 are precisely adjusted, further improving the performance and efficiency of the equipment, reducing the high-energy-consuming transportation link of the raw ore, contributing to energy conservation and emission reduction, being more environmentally friendly and efficient.

[0072] In other specific embodiments, the crushing load-bearing bottom plate 7 is arranged in a slightly inclined direction with a lower feeding end and a higher 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, 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 conveyor 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 materials to roll onto the slightly higher crushing load-bearing bottom plate 7 at a slightly lower position during the conveying process, pushing the materials in a small-angle stone-pushing-stone manner, which helps to sequentially push the conveyed materials forward from the bottom for feeding. On the one hand, it reduces the deposited materials, improves the pushing activity, reduces the padding at the feeding port, and reduces 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 the equipment wear is reduced by stone hitting stone and stone grinding stone in the crushing chamber 10, 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. The reinforcing rib plate 21 includes a first plane 22 that extends horizontally and is perpendicular to the feeding and discharging direction. The first plane 22 is connected to an elastic component 23 with an elastic force perpendicular thereto. The elastic component is connected to a bearing plate 24. Both ends of the bearing plate 24 extend from both sides of the concave section and are connected to fixing piles 25. The fixing piles 25 are used to be inserted into the ground of the quarrying working face for pile fixing. The fixing piles 25 can penetrate deep into the ground of the quarrying working face to provide stable support for the equipment. This embodiment helps to increase the strength of the crushing load-bearing bottom plate 7, and maximally guides the lateral impact force of the crushing hammer head 12 to the fixing piles 25 and then to the working ground through the elastic component 23 for absorption, reducing the lateral impact on the support trough of the heavy chain scraper conveyor 3 and also reducing the lateral impact on the base of the crawler drive part. For crushing equipment with the same processing capacity, it helps to make the bearing and supporting equipment lighter in weight, reduce costs, optimize equipment performance, and extend service life.

[0074] In other specific embodiments, the number of the arranged reinforcing rib plates 21 can also be adjusted. In a crushing equipment with a small processing capacity, only 1 reinforcing rib plate 21 is used; while in a crushing equipment with a larger processing capacity, multiple reinforcing rib plates 21 are arranged to optimize the impact resistance and stability of the equipment.

[0075] As Figure 5 shown, the reinforcing rib plate 21 is arranged to be at least 1, and the reinforcing rib plate 21 is arranged on the plumb plane where the foremost hammer head 12-1 of the roller 9 is located. The acting direction of the force of the foremost hammer head 12-1 of the roller 9 on the stone is mostly a vertical downward chiseling force, which has the greatest impact on the crushing load-bearing bottom plate 7. Therefore, the reinforcing rib plate 21 is arranged here to optimize the impact resistance of the equipment. In the subsequent action of the downward hammer head 12, the chiseling force acts together with the squeezing force and abrasion force with a more lasting effect, and the force in the vertical downward direction gradually weakens, while the acting force towards the rear of the discharge gradually increases. Therefore, in cooperation with the elastic component 23 in the feeding and discharging direction, the persistent lateral acting force is elastically and durably softened, making it easier for the acting force on the material to spread, last, and be evenly distributed, which is beneficial to the uniform crushing and smaller particle size crushing of the material.

[0076] In other specific embodiments, the reinforcing rib plate 21 is arranged to be at least 3, which are respectively a first reinforcing rib plate, a second reinforcing rib plate, and a third reinforcing rib plate. The first reinforcing rib plate is arranged on the plumb plane where the foremost hammer head 12-1 of the roller 9 is located, the third reinforcing rib plate is arranged on the plumb plane of the hammer head 29 at the narrowest discharge port, and the second reinforcing rib plate is arranged at the midline position between the first reinforcing rib plate and the third reinforcing rib plate. The reinforcing rib plates 21 and the corresponding elastic components 23 arranged at the three optimal positions of the front, middle, and rear optimize the performance.

[0077] In this embodiment, the elastic component 23 is selected as a leaf spring structure. The leaf spring is a continuous solid structure. While providing elastic buffering in the feeding and discharging direction for the crushing load-bearing bottom plate 7, it also further collaborates to provide strength enhancement in the vertical plane direction, further improving the impact resistance. On both sides above the support frame 4, a plurality of fixing studs (not shown) are provided. On both sides at the corresponding positions of the crushing load-bearing bottom plate 7, connecting waist-shaped holes (not shown) are provided. The waist-shaped holes are sleeved on the fixing studs, and a longitudinal limit nut 30 is provided at the upper part of the fixing studs. The plurality of fixing studs are used to provide stable support points, ensuring 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 finely adjusted within a certain range, and cooperate with the elastic component 23 for elastic fine adjustment in the feeding and discharging direction. The longitudinal limit nut 30 is installed at the upper part of the fixing stud, used to lock the position, restrict 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 with a conveying and screening roller device for conveying and screening the discharged materials. An elastic expansion gap is provided between the front of the crushing load-bearing bottom plate 7 and the power feeding roller 5, and an elastic expansion gap is provided 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 particle size of the primary crushing discharge of the crawler impact roller crusher a is 0 - 350 mm. In the subsequent process of the crawler impact roller crusher a, a Rayne crusher e and several crawler mobile belt conveyors c are arranged. This process can be randomly arranged and combined according to different mining positions. Several groups of crawler mobile belt conveyors c can be placed in front of the secondary crusher or behind the secondary crusher. The secondary crushing uses a Rayne crusher e with a screening function, and the discharged particle size can be controlled within 0 - 120 mm without a vibrating screen, and the particle size can be adjusted according to the design.

[0079] This embodiment enables the entire device to move flexibly and adapt to the complex environment of the mine quarrying working face. The crawler crushing station and its connected crawler belt conveyor that form the primary crushing process can both move freely. The conveying distance can be easily achieved by increasing or decreasing the mobile belt conveyor. It has excellent mobility in working position movement and adaptability to the working site. It does not require various preliminary preparations required before the installation of a fixed crushing station. The working position can be adjusted within a short time and it can enter the working state at any time.

[0080] The crawler crushing device of this embodiment fully considers multiple aspects such as strength, stability, energy conservation, adaptability, and material handling efficiency in design and mechanical structure, realizing efficient and reliable in-situ coarse crushing operations in mines. It not only improves the performance and efficiency of the equipment, but also reduces the operation cost and maintenance difficulty, bringing significant economic benefits and usage value to users.

[0081] The above are only embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within 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 conveys the materials to the edge of the mine quarrying working face, and utilizes the height difference of the mountain to make the conveyed materials roll down the mountain from the mine quarrying working face to the transfer warehouse at the bottom of the mountain, or directly transport them to the transfer warehouse at the bottom of the mountain using a long-distance belt conveyor; 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.

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 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.

3. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 1 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.

4. The mobile head-stage in-situ ore treatment process for a stepped mine quarrying face according to claim 1 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.

5. The in-situ mobile head section processing process for stepped mine quarrying working face according to claim 4 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.

6. The mobile head-stage in-situ ore treatment process for the stepped mine quarrying face according to claim 4 is characterized by: The elastic component is a leaf spring.

7. The mobile head-stage in-situ ore treatment process for a stepped mine quarrying face according to claim 1 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.

8. The mobile head-stage in-situ ore treatment process for a stepped mine quarrying face according to claim 1 is characterized by: The discharging section is connected to the roller device and the discharging conveying belt machine.

9. The mobile head-stage in-situ ore treatment process for a stepped mine quarrying face according to claim 1 is characterized by: 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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