An in-situ stone crawler impact roller roughing device for a mine quarrying working face

Abstract

The present invention relates to the technical field of stone processing, and specifically to an in-situ stone crawler impact roller roughing device for a quarry working face. An impact roller crushing device is arranged above a crawler drive part, and a heavy-duty chain scraper conveyor is arranged below the crushing device; the scraper conveyor includes a feeding section, a concave section, and a discharging section, and the concave section is arranged below the crushing device; a power feeding roller is arranged above the concave section, and a spiral guide rail is arranged on the power feeding roller; the power feeding roller is connected to a crushing load-bearing bottom plate, and the crushing load-bearing bottom plate is elastically connected along the feeding and discharging direction; the roller of the impact roller crushing device is placed in a crushing cavity, and the distance between the outer edge line of the frontmost hammer head of the roller and the frontmost feeding outer edge of the crushing load-bearing bottom plate in the vertical projection on the crushing load-bearing bottom plate is not greater than one-half of the vertical projection distance between the frontmost hammer head and the crushing load-bearing bottom plate. The present invention solves the problems of easy material blockage and large damage to the feeding device during in-situ crushing of a quarry working face.

Description

Technical Field

[0001] The present invention relates to the technical field of stone processing, and particularly to an in-situ stone crawler impact roller roughing device for a quarry working face in a mine. Background Art

[0002] Previously, many explorations have emerged in the industry for the mechanism sand processing process. Some technologies have tried to build continuous conveying and crushing equipment, aiming to achieve smooth connection of the original feeding, crushing, and discharging on the same horizontal plane, shaping a continuous horizontal material flow crushing system, hoping to build a compact and high-yield production system with excellent adaptability to the on-site environment, thereby greatly reducing infrastructure costs, resolving the problems of funds and mobility derived from semi-mobile crushing stations composed of multiple pieces of equipment, and at the same time reducing the labor burden of daily equipment maintenance to assist in the efficient mining of open-pit mine materials.

[0003] However, it has been found through practical tests that such early attempts still have significant defects. In the cooperation link between crushing and conveying, most of the crushing components directly perform crushing actions on the conveying surface of the conveying device. For example, crushing tooth rollers are directly used to act on the conveying surface for shearing and extrusion operations. This design has many drawbacks: on the one hand, the reaction force that the conveying surface of the elevated structure conveyor can provide is weak, greatly limiting the full exertion of the strong crushing efficiency of the crushing tooth rollers and making it difficult to meet the requirements of in-situ rough crushing in mines for a large crushing force; on the other hand, the strong crushing force generated by the crushing tooth rollers during the crushing process will form intermittent and intensive downward impact forces on the continuously conveyed conveying surface, causing the driving rollers of the conveying device to be impacted by reverse resistance, frequently resulting in overheating and burning out of the driving rollers and structural damage, seriously affecting the stable operation of the equipment. In addition, although the continuous feeding mode has certain advantages, it is powerless when dealing with large-grained stones and is extremely prone to the dilemma of large material blockage. Once blockage occurs, often only the helpless actions of stopping the machine or reversing the conveying device can be taken to clean the materials, which undoubtedly leads to a sharp increase in the number of machine stops and a significant reduction in production efficiency.

[0004] In summary, the mechanism sand production and processing industry urgently needs a new technical solution for in-situ stone processing in a quarry working face of a mine that can comprehensively overcome the above problems, effectively improve the in-situ roughing efficiency of the material, effectively prevent the risk of equipment loss, and at the same time closely conform to the trend of the times of environmental protection and energy conservation. Summary of the Invention

[0005] In view of the above background art, the present invention provides a crawler impact roller roughing device for in-situ stone materials at a mine quarrying working face, which is not prone to material blockage, suitable for providing a large crushing force, and reducing the reverse resistance and impact damage to the conveying device. The purpose is to solve the problems that in-situ ores at the mine quarrying working face are often accompanied by large-sized stones, prone to material blockage, and there are large-sized ores in in-situ rough crushing, requiring a large crushing force, and causing greater damage to the conveying device in traditional continuous feeding and crushing devices.

[0006] To achieve the above object, a crawler impact roller roughing device for in-situ stone materials at a mine quarrying working face provided by the present invention includes a crawler driving part, an impact roller crushing device is arranged above the crawler driving part, and a heavy-duty chain scraper conveyor is arranged below the impact roller crushing device;

[0007] The heavy-duty chain scraper conveyor includes an integrally arranged feeding section, a concave section and a discharging section. The feeding end 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. The support frame is provided with a plurality of power feeding rollers arranged in parallel in sequence from the feeding to the discharging direction. The outer roller circumference of the power feeding rollers is provided with spiral guide rails guiding towards the feeding direction. The upper surface of the power feeding rollers 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 rollers. 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 and discharging direction; the discharging section is arranged behind the crushing load-bearing bottom plate;

[0008] The impact roller crushing device includes a machine shell and a roller. The roller is installed on the support trough body through a bearing seat, so that the roller is placed in a 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 triangular belt, thereby driving the roller to perform a high-speed rotational motion; the crushing load-bearing bottom plate and the inner cavity of the machine shell are combined to enclose a crushing cavity;

[0009] The feeding port of the impact roller crushing device is placed 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 feeding outer edge of the crushing load-bearing bottom plate in the vertical projection on the crushing load-bearing bottom plate is not greater than one-half of the vertical projection distance from the foremost hammer head to the crushing load-bearing bottom plate.

[0010] The heavy-duty chain scraper conveyor can carry the direct feeding of the in-situ coarse ore after blasting and convey it to the front of the feeding port. Through the scraper and the stone pushing the stone, the material is continuously conveyed onto the driving conveying roller. Under the rolling and spiral guiding action of the driving conveying roller, the heavier large pieces of material remain at one end of the driving conveying roller and are pushed towards the feeding port. The relatively small pieces of material are driven towards the feeding port and move and distribute towards the tail end of the conveying screw, thereby forming a gradient feeding mode with large stones feeding on one side and small stones feeding on the other side. Furthermore, when the large stones block one side of the feeding port at one end, the medium and small stones on the other side can still be continuously fed and broken, improving the crushing efficiency.

[0011] A crushing load-bearing bottom plate is provided to prevent the crushing impact force 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 driving sprocket 18 of the conveying device.

[0012] In the case of large pieces of material blocking the material, generally, the longitudinal dimension of the material is greater than the height of the front feeding hammer head of the roller of the crushing device, resulting in difficulty for the hammer head to feed. The crushing device of the present invention is provided with a front extension plate of the crushing load-bearing bottom plate with a suitable size. If the transverse dimension of the material along the feeding direction is small, most of it is pushed onto the crushing load-bearing plate. If its longitudinal dimension is large and the frontmost hammer head has difficulty feeding, then this material is a strip-like material. The continuous feeding of the subsequent driving conveying roller pushes the lower end of the strip-like material, causing it to turn over and feed with the narrow end, automatically solving the problem of material blockage. If its transverse dimension is also large, then a large part of it is placed on the driving roller. Under the turning force of the driving roller, it is beneficial to the turning of the material to a certain extent. When it has a dimension direction that meets the feeding requirements, it is eaten by the hammer head, and the problem of material blockage is also solved to a certain extent.

[0013] Preferably, the heavy-duty chain scraper conveyor includes the support trough bodies arranged on both sides. The support trough bodies are connected to the bearing frame of the crawler driving part. Driving sprockets are arranged at one end of the two 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 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. The crawler driving part serves as a bearing base, with a flexible operation scenario, suitable for flexible in-situ operation at the quarrying working face of the mine. Cooperating with the heavy-duty chain scraper conveyor, it realizes the integrated driving of in-situ feeding, crushing, and discharging at the quarrying working face of the mine, simplifies the types of power equipment, reduces the cumbersome problems of connecting, debugging, and infrastructure construction of various equipment. At the same time, it reduces the high-energy-consuming transportation link of the raw ore, contributes to energy conservation and emission reduction, and is more environmentally friendly and efficient.

[0014] Preferably, the crushing load-bearing bottom plate is arranged in a slightly inclined direction with a lower feeding end and a higher discharging end, and the acute angle formed between 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 feeding port size of the impact roller crushing device.

[0015] This preferred solution helps to expand the feeding port and increase the effective crushing path, thereby improving the crushing ratio. At the same time, the material on the power feeding roller rolls onto the slightly higher crushing load-bearing bottom plate at a slightly lower position and pushes the material in a small-angle stone-pushing-stone manner, which helps to convey the material to be pushed forward into the feeding port in sequence from the bottom. On the one hand, it reduces the deposited material, improves the pushing activity, reduces the padding material at the feeding port, and reduces blockage; on the other hand, a padding layer is generated in the crushing cavity to protect the crushing load-bearing bottom plate. By stone-hitting-stone and stone-grinding-stone in the crushing cavity, equipment wear is reduced, and the crushing ratio is improved.

[0016] Preferably, a reinforcing rib plate is transversely arranged below the crushing load-bearing bottom plate. The reinforcing rib plate includes a first plane arranged horizontally along the transverse direction and 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 fixing piles, and the fixing piles are used to insert into the ground of the quarrying working face for pile fixing.

[0017] This preferred solution helps to increase the strength of the crushing load-bearing bottom plate, and through the elastic component, the lateral impact force of the crushing hammer head is maximally led to the fixing pile and then to the working ground for absorption, reducing the lateral impact on the support trough of the heavy-duty chain scraper conveyor 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 loading and supporting equipment lighter, reduce costs, optimize equipment performance, and extend service life.

[0018] 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.

[0019] In small-capacity crushing equipment, one such reinforcing rib plate is used. In the present invention, most of the force exerted by the foremost hammer head of the roller on the stone is a vertical downward chiseling force, which has the greatest impact on the crushing load-bearing bottom plate. Therefore, a reinforcing rib plate is arranged here to optimize the anti-impact performance of the equipment. In the subsequent action of the downward hammer heads, the chiseling force, the more persistent squeezing force, and the abrasion force act together, and the force in the vertical downward direction gradually weakens, while the force acting towards the rear of the discharging port gradually increases. Therefore, in cooperation with the elastic component in the feeding and discharging direction, the persistent lateral force is elastically and persistently softened, making it easier for the force on the material to spread, be persistent, and be evenly distributed, which is beneficial to the uniform crushing of the material and the crushing into smaller particle sizes.

[0020] Preferably, at least three reinforcing rib plates are provided, namely 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 surface where the frontmost hammer head of the roller is located. The third reinforcing rib plate is arranged on the plumb surface of the hammer head at the discharge port. The second reinforcing rib plate is arranged at the midline position between the first reinforcing rib plate and the third reinforcing rib plate.

[0021] In a crushing device with a relatively large processing capacity, by adopting the arrangement of multiple reinforcing rib plates in this solution, the reinforcing rib plates and corresponding elastic components are arranged at the three optimal positions of the front, middle and rear to optimize the performance.

[0022] Preferably, the elastic component is a leaf spring. The continuous solid structure of the leaf spring not only provides elastic buffering in the feeding and discharging directions for the crushing load-bearing bottom plate, but also further collaboratively provides a strength enhancement effect in the plumb surface direction, further improving the impact resistance.

[0023] Preferably, multiple groups 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 limiting nuts are arranged on the upper parts of the fixing studs.

[0024] The multiple groups of fixing studs arranged on both sides above the support frame are used to provide stable support points, ensuring that the crushing load-bearing bottom plate is fixed in the correct position. The connecting waist-shaped holes on both sides of the crushing load-bearing bottom plate allow the bottom plate to be finely adjusted within a certain range, and cooperate with the elastic components for elastic fine adjustment in the feeding and discharging directions. The longitudinal limiting nuts are installed on the upper parts of the fixing studs to lock the position and limit the longitudinal movement of the crushing load-bearing bottom plate, preventing position deviation during operation and ensuring the stability and safety of the equipment.

[0025] Preferably, the discharge section is connected with a dial roller device, which is used for conveying and screening the discharged materials.

[0026] Preferably, an elastic telescopic gap is arranged between the front of the crushing load-bearing bottom plate and the power feeding roller, and an elastic telescopic gap is arranged between the rear of the crushing load-bearing bottom plate and the discharge section to prevent interference and collision.

[0027] Compared with the related technologies, the in-situ stone crawler impact roller roughing device for a mine quarrying working face provided by the present invention has the following beneficial effects:

[0028] 1. The heavy chain scraper conveyor of the present invention can directly load the in-situ coarse ore after blasting and convey it to the front of the feeding port. Through the scraper and the stone pushing the stone, the material is continuously conveyed onto the driving conveying roller. Under the rolling and spiral guiding action of the driving conveying roller, the heavier large pieces of material remain at one end of the driving conveying roller and advance towards the feeding port. The relatively small pieces of material are driven towards the feeding port and move and distribute towards the tail end of the conveying screw, thereby forming a gradient feeding mode with large stones feeding on one side and small stones feeding on the other side. Furthermore, when the large stones block one side of the feeding port at one end, the medium and small stones on the other side can still be continuously input and broken. The large and small materials are automatically fed separately, improving the crushing efficiency.

[0029] 2. The present invention is provided with a crushing load-bearing bottom plate, so that the crushing impact force is prevented from acting on the upper transmission surface of the conveying device, reducing the reverse resistance damage and impact force damage to the continuously operating conveying device, and reducing the burning and damage of the driving roller or driving sprocket of the conveying device.

[0030] 3. In the case of large pieces of material blocking the material, generally, the longitudinal dimension of the material is greater than the height of the front feeding hammer head of the roller of the crushing device, resulting in difficulty for the hammer head to feed on the material. The crushing device of the present invention is provided with a front extension plate of the crushing load-bearing bottom plate with a suitable size. If the transverse dimension of the material along the feeding direction is small and most of it is pushed onto the crushing load-bearing plate, and its longitudinal dimension is large and the frontmost hammer head has difficulty feeding on it, then this material is a strip-like material. The continuous feeding of the subsequent driving conveying roller pushes the lower end of this strip-like material, causing it to turn over and feed with the narrow end, automatically solving the problem of material blockage; if its transverse dimension is also large, then a large part of it will be placed on the driving roller, and under the flipping force of the driving roller, it is beneficial to the flipping of this material to a certain extent. When it reaches a size direction suitable for feeding, it will be eaten by the hammer head, also solving the problem of material blockage to a certain extent.

[0031] 4. In summary, the crawler impact roller crushing device of the present invention solves the problems of easy material blockage and large damage to the feeding device during in-situ crushing at the mining and quarrying working face. Description of the Drawings

[0032] Figure 1 is the front view of the present invention;

[0033] Figure 2 is the top view of the present invention;

[0034] Figure 3 is the side view of the present invention;

[0035] Figure 4 is the structural schematic diagram of the upper power feeding roller and the crushing load-bearing bottom plate of the concave section;

[0036] Figure 5 is the top view structural schematic diagram of the upper power feeding roller and the crushing load-bearing bottom plate of the concave section;

[0037] Figure 6 It is a cross-sectional view of the upper power feeding roller of the concave section and the crushing load-bearing bottom plate;

[0038] Figure 7 It is a structural schematic diagram of the impact roller crushing device;

[0039] Figure 8 It is a structural schematic diagram of the roller and the crushing hammer;

[0040] Figure 9 It is a schematic diagram of the working state of the present invention.

[0041] Reference numerals in the figure:

[0042] 1. Crawler drive part, 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 cavity, 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. Discharging port hammer head, 30. Longitudinal limit nut, 31. Upper edge line of the feeding end. Specific embodiments

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] As Figures 1 to 9 shown, a crawler impact roller roughing device for in-situ stone materials in a mine quarrying working face has the following detailed structure:

[0045] The device mainly includes a crawler drive part 1, an impact roller crushing device 2 is arranged above the crawler drive part 1, and a heavy-duty chain scraper conveyor 3 is arranged below the impact roller crushing device 2. This design enables the entire device to move flexibly, adapt to the complex environment of the mine quarrying working face, and at the same time realize the integrated operation of in-situ feeding, crushing and discharging, simplifies the types of power equipment, and reduces the cumbersome problems of equipment connection, debugging and infrastructure.

[0046] The heavy-duty chain scraper conveyor 3 specifically includes an integrally arranged feeding section 301, a concave section 302, and a discharging section 303. Among them, the feeding section 301 is arranged in front of the impact roller crushing device 2 for receiving raw materials; the discharging section 303 is arranged behind the impact roller crushing device 2 for discharging the crushed materials; the concave section 302 is arranged below the impact roller crushing device 2 for supporting and conveying 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 crushing device 2, and integrally output the crushed materials.

[0047] On the support trough body of the concave section 302, a support frame 4 is arranged. The support frame is provided with a plurality of power feeding rollers 5 arranged in parallel in sequence from the feeding end to the discharging end. The power feeding roller is mainly composed of an outer roller, a shaft, bearings, 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.

[0048] 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 materials. Behind the discharging end of the power feeding roller 5, a crushing load-bearing bottom plate 7 is connected. The crushing load-bearing bottom plate 7 is placed below the impact roller crushing device 2 for bearing 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.

[0049] The impact roller crushing device 2 includes a machine shell 8 and a roller 9, and also includes components such as a crushing chamber 10, a feeding port, a discharging guard, etc. 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 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 crushing device 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 extruding the materials through the hammer heads 12.

[0050] 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 takes in the material has a distance from the frontmost side 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 oversized size, it can be self-cleared and unblocked, reducing the frequency of shutdown for material dredging.

[0051] In addition, the heavy-duty chain scraper conveyor 3 equipped with the crawler crushing device includes a trough body, a baffle plate 15, high-strength wear-resistant chain links 16, a scraper 17 and other components. 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 driving part 1. The 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. The high-strength wear-resistant chain links 16 are sleeved on the driving sprocket 18 and the redirecting sprockets 19, and the scraper 17 is 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 to provide power for the operation of the conveyor, thereby driving the scraper 17 to move on the high-strength wear-resistant chain links 16 to achieve smooth conveying of the material.

[0052] The beneficial effects of the present invention are as follows: The heavy-duty chain scraper conveyor 3 can directly load the in-situ coarse ore after blasting and convey it to the front of the feed inlet. Through the scraper 17 and the stone-pushing-stone method, the material is continuously conveyed to the driving feed roller. Under the rolling and spiral guiding effects of the driving feed roller, the heavier large pieces of material stay 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 tail end of the feed screw, thereby forming a gradient feeding mode where large stones are fed from one side and small stones are fed from 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.

[0053] The 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, 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.

[0054] In the case of large material blockage, generally, the longitudinal dimension of the material is greater than the height of the front feeding hammerhead of the roller 9 of the crushing device, resulting in difficulty 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 material along the feeding direction is small, most of the material is pushed onto the crushing load-bearing plate. If its longitudinal dimension is large and the frontmost hammerhead 12-1 has difficulty feeding, then the material is a strip-like material. During the continuous feeding of the subsequent driving conveyor roller, the lower end of the strip-like material is pushed, causing it to turn over so that the narrow end feeds in, thus solving the blockage problem by itself. If its transverse dimension is also large, a large part of it will be placed on the driving roller. Under the turning force of the driving roller, it is beneficial to the turning of the material to a certain extent. When it reaches a dimension direction suitable for feeding, it will be fed by the hammerhead 12, also solving the blockage problem to a certain extent by itself.

[0055] The crawler drive unit 1 serves as a load-bearing base, making the equipment easy to move and adjust the working position, with a flexible operation scenario, improving the adaptability of the working site. It is also more suitable for flexible in-situ operation on the quarrying 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 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.

[0056] In other specific embodiments, the crushing load-bearing bottom plate 7 is arranged in a slightly inclined manner with the feeding end lower and the discharging end higher, 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 crushing device 2. This design enables the material to roll onto the slightly higher crushing load-bearing bottom plate 7 at a slightly lower position during the conveying process, pushing the material in a small-angle stone-pushing-stone manner, which helps to push the conveyed material to feed in sequentially from the bottom. On the one hand, it reduces the deposited material, 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.

[0057] 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 for absorption through the elastic component 23, 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 equipment for loading and support lighter in weight, reduce costs, optimize equipment performance, and extend service life.

[0058] In other specific embodiments, the number of the reinforcing rib plates 21 arranged 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.

[0059] As Figure 5 shown, the reinforcing rib plate 21 is arranged as 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, the squeezing force and the abrasion force with a more lasting action act together, and the force in the vertical downward direction gradually weakens, while the force acting 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 force is elastically and durably softened, making it easier for the force on the material to spread, last and be homogenized, which is beneficial to the uniform crushing and small particle size crushing of the material.

[0060] In other specific embodiments, the reinforcing rib plate 21 is arranged as 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. 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 arranged at the three optimal positions of the front, middle and rear and the corresponding elastic components 23 optimize the performance.

[0061] 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. Multiple groups of fixing studs (not shown) are provided on both sides above the support frame 4, and connecting waist-shaped holes (not shown) are provided on both sides at corresponding positions of the crushing load-bearing bottom plate 7. The waist-shaped holes are sleeved on the fixing studs, and longitudinal limit nuts 30 are provided on the upper parts of the fixing studs. The multiple groups 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 nuts 30 are installed on the upper parts of the fixing studs 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 discharged materials. An elastic telescopic gap is provided between the front of the crushing load-bearing bottom plate 7 and the power feeding roller 5, and an elastic telescopic gap is provided between the rear of the crushing load-bearing bottom plate 7 and the discharging section to prevent interference and collision.

[0062] The crawler-type crushing device of this embodiment fully considers multiple aspects such as strength, stability, energy conservation, adaptability, and material handling efficiency in terms of 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 operating cost and maintenance difficulty, bringing significant economic benefits and use value to users.

[0063] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural 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 be similarly included in the patent protection scope of the present invention.

Claims

1. An in-situ stone crawler impact roller rough processing device for a mine quarrying working face, characterized in that: It comprises a crawler drive unit, an impact roller crushing device is arranged above the crawler drive unit, and a heavy chain scraper conveyor is arranged below the impact roller crushing device; 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 the crushing load-bearing bottom plate is elastically connected 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 in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 1 is characterized in that: 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 in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 1 is characterized in that: 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 size of the feeding port of the impact roller crushing device.

4. The in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 1 is characterized in that: 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 stone crawler impact roller rough processing device for a mine quarrying working face according to claim 4 is characterized in that: 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 in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 4 is characterized in that: The reinforcing rib plates are provided in at least three numbers, namely the first reinforcing rib plate, the second reinforcing rib plate and the third reinforcing rib plate. The first reinforcing rib plate is provided on the plumb plane where the frontmost hammer head of the roller is located, the third reinforcing rib plate is provided on the plumb plane of the hammer head at the discharge port, and the second reinforcing rib plate is provided at the midline position between the first reinforcing rib plate and the third reinforcing rib plate.

7. The in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 4 is characterized in that: The elastic component is a leaf spring.

8. The in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 1 is characterized in that: 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 in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 1, characterized in that: The discharging section is connected to a roller device.

10. The in-situ stone crawler impact roller rough processing device for a mine quarrying working face according to claim 1, characterized in that: An elastic expansion gap is arranged between the front of the crushing load-bearing bottom plate and the power feeding roller, and an elastic expansion gap is arranged between the rear of the crushing load-bearing bottom plate and the discharging section.

Images