In-situ stone track impact type roller rough machining device for mine quarrying face

Abstract

The invention relates to the technical field of stone processing treatment, in particular to a mine quarrying face in-situ stone crawler belt impact type roller rough machining device, an impact type roller crushing device is arranged above a crawler belt type driving part, and a heavy chain type scraper conveyor is arranged below the crushing device; the scraper conveyor comprises a feeding section, a concave section and a discharging section, and the concave section is arranged below the crushing device; a power conveying roller is arranged above the concave section and is provided with a spiral guide rail; the power conveying roller is connected with a crushing bearing bottom plate which is elastically connected in the feeding and discharging direction. A rolling shaft of the impact type rolling shaft crushing device is arranged in the crushing cavity, and the distance between the vertical projection of the outer edge line of the foremost hammer head of the rolling shaft on the crushing bearing bottom plate and the foremost feeding outer edge of the crushing bearing bottom plate is not larger than one half of the distance between the foremost hammer head and the vertical projection of the crushing bearing bottom plate. The problems that materials are prone to being blocked during in-situ crushing on a mine quarrying face, and damage to a material conveying device is large are solved.

Description

Technical Field

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

[0002] Previously, the industry has also made many explorations for the artificial sand processing process. Some technologies have attempted to build continuous conveying and crushing equipment, aiming to achieve smooth connection between the original feeding, crushing and discharging on the same level, and to create a continuous horizontal material flow and crushing system. It is hoped that this will create a compact, high-yield production system with excellent adaptability to the on-site environment, thereby significantly reducing infrastructure expenses, resolving the funding and mobility problems arising from semi-mobile crushing stations composed of multiple devices, and at the same time reducing the manpower burden of daily equipment maintenance, thereby facilitating the efficient mining of open-pit mine materials.

[0003] However, practical tests have found that such early attempts still have significant defects. In the link of crushing and conveying coordination, most crushing components directly perform crushing actions on the conveying surface of the conveyor, such as using crushing tooth rollers to directly act on the conveying surface for shearing and extrusion operations. This design has many disadvantages: on the one hand, the reaction force that can be given by the conveying surface of the conveyor with a vacant structure is weak, which greatly limits the crushing tooth rollers from fully exerting their powerful crushing efficiency, and it is difficult to meet the demand for larger crushing force for in-situ rough crushing in mines; on the other hand, the strong crushing force generated by the crushing tooth rollers during the crushing process will form intermittent intensive downward impact force on the conveying surface in an uninterrupted conveying state, causing the driving roller of the conveyor to suffer reverse resistance impact, frequently causing the driving roller to overheat and burn, 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 it is very easy to cause the dilemma of large material blocking. Once blocking occurs, it is often necessary to shut down or reverse the conveyor to clean up the material, which undoubtedly leads to a sharp increase in the frequency of shutdowns and a significant reduction in production efficiency.

[0004] To sum up, the machine-made sand and gravel production and processing industry is in urgent need of a new in-situ stone processing technology solution for quarrying working faces that can comprehensively overcome the above-mentioned stubborn problems, effectively improve the efficiency of in-situ rough processing of materials, effectively prevent and control the risk of equipment loss, and at the same time closely adapt to the development trend of environmental protection and energy conservation. Summary of the invention

[0005] In view of the above background technology, the present invention provides an in-situ stone crawler impact roller rough processing device for a mine quarrying working face, which is not prone to blockage, is suitable for providing a large crushing force, and reduces the reverse resistance and impact force damage to the conveying device. The purpose is to solve the problem that the in-situ ore of the mine quarrying working face is often accompanied by large-grained stones, which are easy to block, and the in-situ rough crushing contains large-grained ores, which requires a large crushing force and causes great damage to the conveying device in the traditional continuous feeding and crushing device.

[0006] In order to achieve the above-mentioned object, the present invention provides an in-situ stone crawler impact roller rough processing device for a mine quarrying working face, comprising 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;

[0007] The heavy-duty chain scraper conveyor comprises an integrally arranged feeding section, a concave section and a discharging section, wherein 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 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 crushing device; 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;

[0008] 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;

[0009] 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.

[0010] The heavy chain scraper conveyor can carry the direct loading of the coarse ore in situ after blasting, and transport it to the front of the feed port. The materials are continuously transported to the drive feed roller through the scraper and the stone push stone. Under the rolling and spiral guiding action of the drive feed roller, the heavier bulk materials are left at one end of the drive feed roller and pushed toward the feed port, while the relatively small pieces of materials are driven toward the feed port and move to the tail end of the feed spiral, thus forming a gradient feeding mode in which large stones are fed on one side and small stones are fed on the other side. When large stones at one end block one side of the feed port, the small and medium stones on the other side can still be continuously fed and crushed, thus 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, thereby reducing the reverse resistance and impact force damage to the conveying device and reducing the burning and damage of the driving roller or driving sprocket 18 of the conveying device.

[0012] The situation of blockage by large pieces of materials is generally that the longitudinal dimension of the materials is larger than the height of the frontmost feeding hammer of the crushing device roller, making it difficult for the hammer to feed the materials. The crushing device of the present invention is provided with a crushing load-bearing bottom plate with a suitable size of extension plate. If the lateral dimension of the materials along the feeding direction is small, most of them are pushed onto the crushing load-bearing plate, and the longitudinal dimension is large, making it difficult for the frontmost hammer to feed the materials. In this case, the materials are long strip-like materials, and the continuous feeding of the subsequent driving feed roller pushes the lower end of the long strip-like materials, causing them to turn over to the narrow end for feeding, thus solving the blockage problem by themselves. If the lateral dimension of the materials is also large, a larger part of them will be placed on the driving roller, and the turning force of the driving roller will facilitate the turning of the materials to a certain extent, so that the materials will be fed by the hammer when they meet the size direction of the feeding, thus solving the blockage problem by themselves 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 drive unit, 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, the driving sprocket and the redirecting sprocket are sleeved with high-strength wear-resistant chain rings, 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. The crawler drive unit serves as a bearing base, and the operation scene is flexible, which is suitable for flexible in-situ operation of the mine quarrying working face. With the heavy-duty chain scraper conveyor, the in-situ feeding, crushing and discharging of the mine quarrying working face can be completed by integrated drive, which simplifies the types of power equipment, reduces the cumbersome problems of various equipment connection, debugging and infrastructure construction, and at the same time, reduces the high-energy-consuming transportation link of the raw ore, which is conducive to energy conservation and emission reduction, more environmentally friendly and more efficient.

[0014] Preferably, the crushing load-bearing bottom plate is slightly inclined with a low feed end and a high discharge end, and an acute angle between it and the horizontal plane is no more than 5 degrees. The upper edge line of the feed end of the crushing load-bearing bottom plate is higher than the upper edge of the power feed roller, and the height difference is no more than one tenth of the size of the feed port of the impact roller crusher.

[0015] This preferred solution helps to expand the feed inlet and increase the effective crushing path, thereby improving the crushing ratio. At the same time, the material on the power feed roller rolls from a slightly lower position to the slightly higher crushing load-bearing bottom plate, and pushes the material at a small angle, which helps to push the material from the bottom to the front in sequence. On the one hand, it reduces the deposited material, improves the pushing activity, reduces the padding at the feed inlet, and reduces the blockage; on the other hand, a padding layer is generated in the crushing chamber to protect the crushing load-bearing bottom plate, and the wear of the equipment is reduced by hitting the stone and grinding the stone in the crushing chamber, thereby improving the crushing ratio.

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

[0017] This preferred solution helps to increase the strength of the crushing load-bearing base plate, and through the elastic component, maximizes the lateral impact force of the crushing hammer head to the fixed piles and then to the working ground for absorption, reducing the lateral impact on the supporting trough of the heavy chain scraper conveyor and the lateral impact on the base of the crawler drive unit. Crushing equipment with the same processing capacity helps to load and support the lightweight setting of the equipment, 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 provided on the plumb plane where the frontmost hammer head of the roller is located.

[0019] In the crushing equipment with small processing capacity, the reinforcing rib plate is used at one place. The force exerted by the front hammer of the roller on the stone in the present invention is mostly the vertical downward chiseling force, and the impact force on the crushing load-bearing bottom plate is the largest. Therefore, the reinforcing rib plate is set here to optimize the impact resistance of the equipment. In the subsequent downward action of the hammer, the chiseling force and the more persistent extrusion force and abrasive force act together, and the vertical downward force gradually weakens, and the force to the rear of the discharge gradually increases. Therefore, with the elastic component in the feeding and discharging direction, the persistent lateral force is elastically and persistently softened, which makes it easier to spread, persist and homogenize the force on the material, which is conducive to the uniform crushing of the material and the crushing of smaller particles.

[0020] Preferably, 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 of the discharge port, and the second reinforcing rib plate is provided at the midline position between the first reinforcing rib plate and the second reinforcing rib plate.

[0021] In crushing equipment with a larger processing capacity, the multiple reinforcing rib plates of this solution are arranged, and the reinforcing rib plates and corresponding elastic components are arranged at the three optimal positions of front, middle and rear to optimize performance.

[0022] Preferably, the elastic component is a leaf spring. The continuous entity structure of the leaf spring not only provides elastic buffering for the crushing load-bearing bottom plate in the material feeding and discharging direction, but also further provides strength reinforcement in the vertical direction, thereby 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 of the corresponding positions of the crushing load-bearing bottom plate, the waist-shaped holes are sleeved on the fixing studs, and longitudinal limiting nuts are arranged on the upper parts of the fixing studs.

[0024] Multiple sets of fixed studs are set on both sides above the support frame 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 fine-tuned within a certain range, and cooperate with the elastic components to perform elastic fine-tuning of the feeding and discharging directions. The longitudinal limit nut is installed on the upper part of the fixed stud to lock the position, limit the longitudinal movement of the crushing load-bearing bottom plate, prevent position deviation during operation, and ensure the stability and safety of the equipment.

[0025] Preferably, the discharging section is connected to a roller device for conveying and screening the discharging material.

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

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

[0028] 1. The heavy-duty chain scraper conveyor of the present invention can carry the direct loading of the raw ore in situ after blasting, and transport it to the front of the feed port, and continuously transport the material to the driving feed roller through the scraper and the stone push stone. Under the rolling and spiral guiding action of the driving feed roller, the heavier bulk material stays at one end of the driving feed roller and pushes toward the feed port, while the relatively small bulk material is driven toward the feed port and moves toward the tail end of the feed spiral, thereby forming a gradient feeding mode in which large stones are fed on one side and small stones are fed on the other side. When a large stone at one end blocks one side of the feed port, the small and medium-sized stones on the other side can still be continuously fed and crushed, and large and small materials are automatically diverted into the feed, thereby improving the crushing efficiency.

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

[0030] 3. The situation of blockage by large pieces of materials is generally that the longitudinal dimension of the materials is larger than the height of the frontmost feeding hammer of the crushing device roller, which makes it difficult for the hammer to feed the materials. The crushing device of the present invention is provided with a crushing load-bearing bottom plate with a suitable size of extension plate. If the transverse dimension of the material along the feeding direction is small, most of it is pushed onto the crushing load-bearing plate, and its longitudinal dimension is large and it is difficult for the frontmost hammer to feed the material. In this case, the material is a long strip-like material. The continuous feeding of the subsequent driving feed roller pushes the lower end of the long strip material, and then turns it to the narrow end for feeding, thus solving the blockage problem by itself. If its transverse dimension is also large, a larger part of it will be placed on the driving roller, and the turning force of the driving roller will facilitate the turning of the material to a certain extent, so that it will be fed by the hammer when it meets the size direction of the feeding, thus solving the blockage problem by itself to a certain extent.

[0031] 4. In summary, the crawler impact roller crusher of the present invention solves the problem of easy blockage of materials and serious damage to the feeding device during in-situ crushing at the quarrying working face in a mine. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0035] Figure 4 It is a schematic diagram of the structure of the power feed roller and the crushing load-bearing bottom plate at the upper part of the concave section;

[0036] Figure 5 It is a schematic diagram of the top view of the power feed roller and the crushing load-bearing bottom plate on the upper part of the concave section;

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

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

[0039] Figure 8 It is a schematic diagram of the roller and breaker structure;

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

[0041] Numbers in the figure:

[0042] 1. Crawler drive unit, 2. Impact roller crushing device, 3. Heavy chain scraper conveyor, 301. Feeding section, 302. Concave section, 303. Discharging section, 4. Support frame, 5. Power feed roller, 6. Spiral guide rail, 7. Crushing load-bearing bottom plate, 8. Casing, 9. Roller, 10. Crushing chamber, 11. Driving motor, 12. Hammer, 13. Feeding port, 12-1. Forward hammer, 14. Support trough, 15. Baffle plate, 16. High-strength wear-resistant chain ring, 17. Scraper, 18. Driving sprocket, 19. Redirecting sprocket, 20. Upper edge of power feed roller, 21. Reinforcing rib plate, 22. First plane, 23. Elastic component, 24. Load-bearing plate, 25. Fixed pile, 29. Discharging port hammer, 30. Longitudinal limit nut, 31. Upper edge line of feeding end. DETAILED DESCRIPTION

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

[0044] like Figures 1 to 9 As shown, a track-impact roller rough processing device for in-situ stone material on a quarrying working face in a mine is shown, and the detailed structure is as follows:

[0045] The device mainly includes a crawler drive unit 1, an impact roller crusher 2 is arranged above the crawler drive unit 1, and a heavy chain scraper conveyor 3 is arranged below the impact roller crusher 2. This design enables the entire device to move flexibly and adapt to the complex environment of the mine quarrying face, while realizing the integrated operation of in-situ feeding, crushing and discharging, simplifying the types of power equipment and reducing the cumbersome problems of equipment connection, debugging and infrastructure construction.

[0046] The heavy chain scraper conveyor 3 specifically includes an integrated feed section 301, a concave section 302 and a discharge section 303. The feed section 301 is arranged in front of the impact roller crusher 2 for receiving raw materials; the discharge section 303 is arranged behind the impact roller crusher 2 for discharging crushed materials; and the concave section 302 is arranged below the impact roller crusher 2 for supporting and conveying materials. This design enables the conveyor to withstand direct feeding of in-situ coarse ore after blasting, effectively convey materials to the impact roller crusher 2, and output the crushed materials in an integrated manner.

[0047] A support frame 4 is provided on the support trough body of the concave section 302, and a plurality of parallel power feed rollers 5 are arranged in sequence on the support frame from the feeding direction to the discharging direction. The power feed roller is mainly composed of an outer roller, a shaft, a bearing, a driving device and a supporting structure. The outer roller is cylindrical, and the driving device is composed of a motor, a reducer, a coupling, etc., which provides rotational power for the outer roller. A spiral guide rail 6 is provided on the circumference of the outer roller of the power feed roller 5 to guide in the feeding direction, so that the material can form a gradient feeding mode during the conveying process, that is, large stones are fed on one side and small stones are fed on the other side. This design not only improves the crushing efficiency, but also reduces the occurrence of material blockage.

[0048] The upper surface of the power feeding roller 5 is not higher than the upper conveying plane of the heavy chain scraper conveyor to ensure smooth material transportation. A crushing load-bearing bottom plate 7 is connected to the discharge rear of the power feeding roller 5. The crushing load-bearing bottom plate 7 is placed below the impact roller crushing device 2 to withstand the impact force during the crushing process; the crushing load-bearing bottom plate 7 is connected to the support trough body through the support frame 4, and is elastically connected relative to the support trough body along the feeding and discharging direction to reduce the reverse resistance and impact damage to the heavy chain scraper conveyor; a discharge section 303 is set behind the crushing load-bearing bottom plate 7.

[0049] The impact roller crusher 2 includes a casing 8 and a roller 9, as well as a crushing chamber 10, a feed port, a discharge shield and other components. The roller 9 is installed on the supporting trough body through a bearing seat. The crushing load-bearing bottom plate 7 and the inner cavity of the casing 8 are combined to form a crushing chamber 10 for accommodating and crushing materials. The roller 9 is placed in the crushing chamber 10 above the crushing load-bearing bottom plate 7. The impact roller crusher 2 includes a driving motor 11. The driving motor 11 drives the V-belt pulley at the end of the roller 9 to rotate through a V-belt, thereby driving the roller 9 to rotate at a high speed, and then the hammer head 12 is used to efficiently chisel and squeeze the material.

[0050] The feed port 13 of the impact roller crusher 2 is placed above the crushing load-bearing bottom plate 7. The distance between the outer edge line of the front hammer 12-1 of the roller 9 that first eats the material and the vertical projection of the front hammer 12-1 on the crushing load-bearing bottom plate 7 and the front edge of the crushing load-bearing bottom plate 7 is not greater than half of the vertical projection distance between the front hammer 12-1 and the crushing load-bearing bottom plate 7. This design ensures that the material can smoothly enter the crushing chamber 10 for crushing. If a large stone occasionally blocks the feed port on one side due to its large size, it can also be cleared by itself, reducing the frequency of shutdowns for material dredging.

[0051] In addition, the crawler crushing device is equipped with a heavy-duty chain scraper conveyor 3, whose structure includes a trough body, a material baffle 15, a high-strength wear-resistant chain ring 16, a scraper 17 and other components. The motor is connected to the reducer through a high-speed shaft coupling to drive the drive sprocket 18 to rotate. The trough body includes a supporting trough body 14 arranged on both sides, and the supporting trough body is connected to the bearing frame of the crawler drive unit 1. A driving sprocket 18 is arranged at one end of the trough bodies on both sides, and a plurality of redirecting sprockets 19 are respectively arranged at the other end and the corner of the concave section. High-strength wear-resistant chain rings 16 are sleeved on the driving sprocket 18 and the redirecting sprocket 19, and scrapers 17 are evenly spaced on the high-strength wear-resistant chain ring 16. The main shaft of the driving sprocket 18 is connected to the motor drive assembly to provide power for the operation of the conveyor, thereby driving the scraper 17 to move on the high-strength wear-resistant chain ring 16 to achieve smooth transportation of materials.

[0052] The beneficial effects of the present invention are as follows: the heavy chain scraper conveyor 3 can carry the direct loading of the in-situ coarse ore after blasting, and transport it to the front of the feed port, and continuously transport the material to the driving feed roller through the scraper 17 and the stone push stone. Under the rolling and spiral guiding action of the driving feed roller, the heavier bulk material stays at one end of the driving feed roller and pushes toward the feed port, while the relatively small bulk material is driven toward the feed port and moves toward the tail end of the feed spiral, thereby forming a gradient feeding mode in which large stones are fed on one side and small stones are fed on the other side. When a large stone at one end blocks one side of the feed port, the small and medium-sized stones on the other side can still be continuously fed and crushed, thereby improving the crushing efficiency.

[0053] A crushing load-bearing bottom plate 7 is provided to prevent the crushing impact force from acting on the upper transmission surface of the conveying device, thereby reducing the reverse resistance and impact force damage to the conveying device and reducing the burning and damage of the driving roller or driving sprocket 18 of the conveying device.

[0054] The situation of blockage by large pieces of materials is generally that the longitudinal dimension of the materials is larger than the height of the frontmost feeding hammer of the crushing device roller 9, making it difficult for the hammer to feed the materials. The crushing device of the present invention is provided with a front extension plate of the crushing load-bearing bottom plate 7 of suitable size. If the lateral dimension of the materials along the feeding direction is small, most of them are pushed onto the crushing load-bearing plate, and the longitudinal dimension is large, making it difficult for the frontmost hammer 12-1 to feed the materials. In this case, the materials are long strip-like materials, and the continuous feeding of the subsequent driving feed roller pushes the lower end of the long strip-like materials, thereby causing them to turn over to the narrow end for feeding, thus solving the blockage problem by themselves. If the lateral dimension of the materials is also large, a larger part of them will be placed on the driving roller, and the turning force of the driving roller will facilitate the turning of the materials to a certain extent, so that the materials will be fed by the hammer 12 in the direction of the size that meets the feeding size, thus solving the blockage problem by themselves to a certain extent.

[0055] The crawler drive unit 1 serves as a bearing base, making the equipment easy to move and adjust the workstation, flexible in the operation scene, and improving the adaptability of the work site. It is also more suitable for flexible in-situ operation on the quarrying face in the mine. In conjunction with the heavy-duty chain scraper conveyor 3, the in-situ feeding, crushing and discharging of the quarrying face in the mine can be completed by integrated drive, simplifying the types of power equipment and reducing the tedious problems of various equipment connection, debugging and infrastructure construction. In terms of motor drive, both the conveying device and the crushing device are driven by 10kv high-voltage permanent magnet motors, with significant energy-saving effects. The application of the PLC frequency conversion control system realizes the precise adjustment of the feeding speed of the heavy-duty chain scraper conveyor 3 and the height of the roller 9, further improving the performance and efficiency of the equipment, reducing the high-energy-consuming transportation link of the raw ore, and contributing to energy conservation and emission reduction, more environmentally friendly and more efficient.

[0056] In other specific embodiments, the crushing load-bearing bottom plate 7 is set in a slightly inclined direction with a low feeding end and a high discharging end, and the acute angle between it and the horizontal plane is not greater than 5 degrees. This design helps to expand the feeding port and increase the effective crushing path, thereby improving the crushing ratio. At the same time, the upper edge line 31 of the feeding end of the crushing load-bearing bottom plate 7 is higher than the upper edge 20 of the power feed roller, and the height difference is not greater than one-tenth of the feeding port size of the impact roller crushing device 2. This design enables the material to roll from a slightly lower position to the slightly higher crushing load-bearing bottom plate 7 during the conveying process, and push the material in a small angle stone-pushing-stone manner, which helps to convey the material and push the front material from the bottom in sequence. On the one hand, it reduces the deposited material, improves the pushing activity, reduces the padding at the feeding port, and reduces the blockage; on the other hand, a padding layer is generated in the crushing chamber 10 to protect the crushing load-bearing bottom plate 7, and reduces the wear of the equipment by hitting stones and grinding stones in the crushing chamber 10, thereby improving the crushing ratio.

[0057] In other specific embodiments, a reinforcing rib plate 21 is transversely arranged below the crushing load-bearing bottom plate 7, and the reinforcing rib plate 21 includes a first plane 22 that is arranged transversely and perpendicular to the feeding and discharging direction, the first plane 22 is connected to an elastic component 23 whose elastic force is perpendicular to it, and the elastic component is connected to a bearing plate 24, and the two ends of the bearing plate 24 extend from the two sides of the concave section and are connected to fixed piles 25, and the fixed piles 25 are used to be inserted into the underground of the quarrying working surface for pile fixing, and the fixed piles 25 can penetrate deep into the underground of the quarrying working surface to provide a stable support for the equipment. This embodiment helps to increase the strength of the crushing load-bearing bottom plate 7, and maximizes the lateral impact force of the crushing hammer head 12 to the fixed piles 25 and then to the working ground for absorption through the elastic component 23, reducing the lateral impact on the supporting trough of the heavy chain scraper conveyor 3, and also reducing the lateral impact on the base of the crawler drive unit. The crushing equipment with the same processing capacity helps to lighten the load-bearing and supporting equipment, reduce costs, optimize equipment performance, and extend service life.

[0058] In other specific embodiments, the number of reinforcing ribs 21 can also be adjusted. In a crushing device with a small processing capacity, only one reinforcing rib 21 is sufficient; while in a crushing device with a large processing capacity, multiple reinforcing ribs 21 are used to optimize the impact resistance and stability of the device.

[0059] like Figure 5 As shown, at least one reinforcing rib plate 21 is provided, and the reinforcing rib plate 21 is provided on the plumb bob plane where the frontmost hammer head 12-1 of the roller 9 is located. The force acting on the stone by the frontmost hammer head 12-1 of the roller 9 is mostly in the direction of vertically downward chiseling force, and the impact force on the crushing load-bearing bottom plate 7 is the greatest. Therefore, the reinforcing rib plate 21 is provided here to optimize the impact resistance of the equipment. In the subsequent downward action of the hammer head 12, the chiseling force and the more persistent extrusion force and abrasive force act together, and the vertically downward force gradually weakens, and the force to the rear of the discharge gradually increases. Therefore, in conjunction with the elastic component 23 in the feeding and discharging direction, the persistent lateral force is elastically and persistently softened, which makes it easier to spread, persist and homogenize the force on the material, which is conducive to the uniform crushing of the material and the crushing of smaller particles.

[0060] In other specific embodiments, the reinforcing ribs 21 are provided in at least three numbers, namely, the first reinforcing ribs, the second reinforcing ribs and the third reinforcing ribs. The first reinforcing ribs are provided on the plumb plane where the frontmost hammer 12-1 of the roller 9 is located, the third reinforcing ribs are provided on the plumb plane of the narrowest discharge port hammer 29, and the second reinforcing ribs are provided at the midline position between the first reinforcing ribs and the second reinforcing ribs. The reinforcing ribs 21 and the corresponding elastic components 23 provided at the three optimal positions of front, middle and rear optimize the performance.

[0061] In this embodiment, the elastic component 23 uses a leaf spring structure. The leaf spring is a continuous entity structure. While providing elastic buffering for the crushing load-bearing bottom plate 7 in the feeding and discharging direction, it also further cooperates to provide strength reinforcement in the vertical plane direction, further improving the impact resistance. Multiple groups of fixed studs (not shown) are arranged on both sides of the upper side of the support frame 4, and connecting waist-shaped holes (not shown) are arranged on both sides of the corresponding position of the crushing load-bearing bottom plate 7. The waist-shaped holes are sleeved on the fixed studs, and longitudinal limit nuts 30 are arranged on the upper part of the fixed studs. Multiple groups of fixed studs are used to provide stable support points to ensure that the crushing load-bearing bottom plate 7 is fixed in the correct position. The connecting waist-shaped holes on both sides of the crushing load-bearing bottom plate 7 allow the bottom plate of the crushing load-bearing bottom plate 7 to be fine-tuned within a certain range, and cooperate with the elastic component 23 to perform elastic fine-tuning in the feeding and discharging direction. The longitudinal limit nut 30 is installed on the upper part of the fixed stud to lock the position, limit the longitudinal movement of the crushing load-bearing bottom plate 7, prevent position deviation during operation, and ensure the stability and safety of the equipment. The discharging section is connected to a roller device for conveying and screening the discharging material. An elastic expansion gap is arranged between the front of the crushing load-bearing bottom plate 7 and the power feeding roller 5, and an elastic expansion gap is arranged between the rear of the crushing load-bearing bottom plate 7 and the discharging section to prevent interference and collision.

[0062] The crawler crushing device of this embodiment fully considers strength, stability, energy saving, adaptability and material handling efficiency in design and mechanical structure, and realizes efficient and reliable in-situ rough crushing operation in mines. It not only improves the performance and efficiency of the equipment, but also reduces the operating cost and maintenance difficulty, bringing significant economic benefits and use value to users.

[0063] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. 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 forms, namely, a first reinforcing rib plate, a second reinforcing rib plate and a 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 second 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.

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