Crawler-impact-type roller roughing device for in-situ stone at mine quarrying working face
By designing an in-situ tracked impact roller roughing device for quarrying faces, the problems of insufficient crushing force and easy material blockage were solved, achieving efficient and stable stone processing in quarrying faces and reducing equipment wear and operating costs.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SHANGHAI SANME HEAVY MINING MACHINERY CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-30
AI Technical Summary
Existing mining quarry equipment suffers from problems such as insufficient crushing force, easy material blockage, and severe equipment wear in the crushing and conveying coordination process. In particular, it is inefficient and has poor equipment stability when processing large-sized stones.
Design an in-situ stone roughing device with tracked impact rollers in a mining quarry face, including a tracked drive unit, an impact roller crushing device, and a heavy-duty chain scraper conveyor. By setting a crushing load-bearing bottom plate and a power conveying roller, large stones and small stones are separated into different feeds, reducing the reverse resistance and impact damage of the conveying device. The impact resistance of the equipment is optimized by reinforcing ribs and elastic components.
It improves crushing efficiency, reduces material blockage, lowers equipment wear and tear, enhances equipment stability and service life, simplifies the types of power equipment, reduces infrastructure and maintenance costs, and enables efficient and environmentally friendly in-situ stone processing at mining quarry faces.
Smart Images
Figure CN2025116560_30072026_PF_FP_ABST
Abstract
Description
A crawler-type impact roller roughing device for in-situ stone processing at a mining quarry face Technical Field
[0001] This invention relates to the field of stone processing technology, and in particular to an in-situ tracked impact roller roughing device for stone materials at a quarry working face. Background Technology
[0002] Previously, the industry has explored many processes for manufactured sand processing. Some technologies have attempted to build continuous conveying crushing equipment, aiming to achieve a smooth connection between the original feeding, crushing and discharge on the same horizontal plane, and to create a continuous horizontal material flow crushing system. The goal is to create a compact, high-yield production system that is highly adaptable to the site environment, thereby significantly reducing infrastructure expenditures, resolving the funding and mobility problems caused by semi-mobile crushing stations composed of multiple pieces of equipment, and reducing the manpower burden of daily equipment maintenance, thus contributing to the efficient mining of materials in open-pit mines.
[0003] However, practical testing revealed significant shortcomings in these early attempts. In the coordinated crushing and conveying process, the crushing components often directly exert their crushing action on the conveying surface of the conveying device, such as using crushing toothed rollers to directly act on the conveying surface for shearing and extrusion operations. This design has numerous drawbacks: on the one hand, the reaction force provided by the elevated conveying surface of the conveying device is weak, greatly limiting the crushing efficiency of the crushing toothed rollers and making it difficult to meet the demand for greater crushing force in in-situ coarse crushing in mines; on the other hand, the powerful crushing force generated by the crushing toothed rollers during the crushing process creates intermittent, dense downward impact forces on the conveying surface in a continuous conveying state, causing the drive rollers of the conveying device to suffer reverse resistance impacts, frequently leading to overheating and burnout of the drive rollers and structural damage, seriously affecting the stable operation of the equipment. In addition, while the continuous conveying mode has certain advantages, it is inadequate when dealing with large-sized stones, easily leading to material blockage. Once blockage occurs, the only option is often to stop the machine or reverse the conveying device to clear the material, which undoubtedly leads to a sharp increase in downtime and a significant reduction in production efficiency.
[0004] In summary, the manufactured sand and gravel production and processing industry urgently needs a brand-new in-situ stone processing technology solution for mining quarrying faces that can comprehensively overcome the aforementioned problems, effectively improve the efficiency of in-situ rough processing of aggregates, effectively control the risk of equipment wear and tear, and closely align with the trend of environmental protection and energy conservation in the modern era. Summary of the Invention
[0005] In view of the above background technology, the present invention provides an in-situ stone roughing device for mining quarry faces that is not prone to material blockage, is suitable for providing large crushing force, and reduces reverse resistance and impact damage to the conveying device. The purpose is to solve the problems that in-situ ore in mining quarry faces often contains large-sized stones, which are prone to material blockage, and that in-situ roughing of large-sized ore requires large crushing force, which causes significant damage to the conveying device in traditional continuous conveying crushing devices.
[0006] To achieve the above objectives, the present invention provides an in-situ stone roughing device with tracked impact rollers in a mining quarry face, comprising a tracked drive unit, an impact roller crushing device disposed above the tracked drive unit, and a heavy-duty chain scraper conveyor disposed below the impact roller crushing device.
[0007] The heavy-duty chain scraper conveyor includes an integrally formed feeding section, concave section, and discharge section. The feeding section is located in front of the impact roller crusher, the discharge section is located behind the impact roller crusher, and the concave section is located below the impact roller crusher. A support frame is provided on the support trough of the concave section. Multiple parallel power conveying rollers are arranged sequentially on the support frame from the feeding direction to the discharge direction. The outer circumference of the power conveying rollers is provided with a spiral guide rail that guides the material in the feeding direction. The upper surface of the power conveying rollers is not higher than the upper conveying plane of the heavy-duty chain scraper conveyor. A crushing load-bearing base plate is connected to the discharge section of the power conveying rollers and is located below the impact roller crusher. The crushing load-bearing base plate is connected to the support trough through the support frame and is elastically connected to the support trough along the feeding and discharge directions. The discharge section is located behind the crushing load-bearing base plate.
[0008] The impact roller crushing device includes a housing and rollers. The rollers are mounted on the support groove via bearing seats, placing the rollers in the crushing chamber above the crushing load-bearing base plate. The impact roller crushing device includes a drive motor, which drives the V-belt pulley at the end of the rollers to rotate via a V-belt, thereby driving the rollers to rotate at high speed. The crushing load-bearing base plate and the inner cavity of the housing together form the crushing chamber.
[0009] The feed inlet of the impact roller crusher is located above the crushing load-bearing base plate. The distance between the outer edge of the first hammer of the roller that feeds first and the vertical projection of the roller onto the crushing load-bearing base plate and the outer edge of the first feeding side of the crushing load-bearing base plate is no greater than half of the vertical projection distance between the first hammer and the crushing load-bearing base plate.
[0010] Heavy-duty chain scraper conveyors can directly feed in-situ coarse ore after blasting and transport it to the inlet. Through scrapers and stone pushers, the material is continuously conveyed to the drive conveyor rollers. Under the rolling and spiral guidance of the drive conveyor rollers, heavier, larger pieces of material remain at one end and are pushed towards the inlet, while relatively smaller pieces are driven towards the inlet and distributed towards the tail end of the conveyor screw, thus forming a gradient feeding pattern where large stones are fed from one side and small stones from the other. Furthermore, even when large stones block one side of the inlet, small and medium-sized stones on the other side can still be continuously fed in and crushed, improving crushing efficiency.
[0011] Setting up a crushing load-bearing base plate prevents the crushing impact force from acting on the upper transmission surface of the conveying device, reducing reverse resistance and impact damage to the conveying device, and reducing the burning and damage of the drive roller or drive sprocket 18 of the conveying device.
[0012] Large material blockages typically occur when the longitudinal dimension of the material exceeds the height of the foremost feeding hammer on the crushing roller, making it difficult for the hammer to pick up the material. The crushing device of this invention features a crushing support plate and extension plate of appropriate size. If the lateral dimension of the material along the feeding direction is small, most of it is pushed onto the crushing support plate. If its longitudinal dimension is large, making it difficult for the foremost hammer to pick up, and the material is a long, strip-shaped piece, the continuous feeding of the subsequent drive roller pushes the lower end of the long, strip-shaped material, causing it to flip and enter through the narrow end, thus resolving the blockage problem. If its lateral dimension is also large, a significant portion will be placed on the drive roller, where the tumbling force of the drive roller helps to tumble the material. Once a piece meets the feeding dimension, it is picked up by the hammer, also resolving the blockage problem to some extent.
[0013] Preferably, the heavy-duty chain scraper conveyor includes support troughs on both sides, which are connected to the carrier frame of the tracked drive unit. A drive sprocket is installed at one end of each trough, and multiple redirecting sprockets are installed at the other end and at the corner of the concave section. High-strength wear-resistant chain links are fitted onto the drive sprockets and the redirecting sprockets, and scrapers are evenly spaced on the high-strength wear-resistant chain links. The main shaft of the drive sprocket is connected to a motor drive assembly. The tracked drive unit serves as a carrier base, offering flexible operating scenarios suitable for in-situ flexible operation at mining quarry faces. Combined with the heavy-duty chain scraper conveyor, it achieves integrated in-situ feeding, crushing, and discharging at mining quarry faces, simplifying the types of power equipment and reducing the complexity of connecting, debugging, and infrastructure construction. Simultaneously, it reduces the energy-intensive transportation of raw ore, contributing to energy conservation and emission reduction, making it more environmentally friendly and efficient.
[0014] Preferably, the crushing load-bearing base plate is set at a slight inclination with the feed end lower and the discharge end higher, and the acute angle between it and the horizontal plane is no more than 5 degrees. The upper edge of the feed end of the crushing load-bearing base plate is higher than the upper edge of the power conveying roller, and the height difference is no more than one-tenth of the feed inlet size of the impact roller crushing device.
[0015] This preferred design helps to enlarge the feed inlet and lengthen the effective crushing path, thereby increasing the crushing ratio. Simultaneously, the material on the power conveyor rollers rolls at a slightly lower position onto the slightly higher crushing support plate, and is pushed at a small angle using a stone-push-stone motion. This helps to convey material from the bottom up, sequentially pushing it into the feed. On one hand, this reduces material deposition, increases pushing activity, reduces material padding at the feed inlet, and reduces blockage. On the other hand, a padding layer is generated within the crushing chamber, protecting the crushing support plate. Furthermore, the stone-on-stone and stone-on-stone grinding within the crushing chamber reduces equipment wear and increases the crushing ratio.
[0016] Preferably, a reinforcing rib plate is provided horizontally below the crushing load-bearing base plate. The reinforcing rib plate includes a first plane that extends horizontally and is perpendicular to the material feeding and discharging direction. The first plane is connected to an elastic component with an elastic force perpendicular to it. The elastic component is connected to a bearing plate. Both ends of the bearing plate extend from both sides of the concave section and are connected to fixed piles. The fixed piles are used to be inserted into the underground of the quarry working face for pile fixing.
[0017] This preferred solution helps increase the strength of the crushing load-bearing base plate and maximizes the lateral impact force of the crusher hammer to be directed to the fixed pile and then to the working ground for absorption through the elastic components. This reduces the lateral impact on the support trough of the heavy-duty chain scraper conveyor and also reduces the lateral impact on the track drive base. For the same capacity of crushing equipment, it helps to make the load-bearing and support equipment lightweight, reduce costs, optimize equipment performance, and extend service life.
[0018] Preferably, at least one reinforcing rib is provided, and the reinforcing rib is provided on the surface of the plumb bob where the foremost hammer head of the roller is located.
[0019] In a small-capacity crushing device, one reinforcing rib is used. The force exerted by the foremost hammer of the roller on the stone is mostly a vertically downward chisel force, resulting in the greatest impact on the crushing load-bearing base plate. Therefore, a reinforcing rib is installed at this location to optimize the equipment's impact resistance. In subsequent downward hammer strikes, the chisel force, along with the more persistent compressive and abrasive forces, work together. The force in the vertically downward direction gradually weakens, while the force towards the discharge direction gradually strengthens. Therefore, in conjunction with the elastic components in the feeding and discharging directions, the persistent lateral force is elastically and persistently softened, making it easier for the force on the material to spread, persist, and homogenize, which is beneficial for uniform crushing and smaller particle size crushing.
[0020] Preferably, there are at least three reinforcing ribs, namely a first reinforcing rib, a second reinforcing rib, and a third reinforcing rib. The first reinforcing rib is disposed on the vertical surface of the foremost hammer of the roller, the third reinforcing rib is disposed on the vertical surface of the discharge hammer, and the second reinforcing rib is disposed at the centerline position between the first reinforcing rib and the third reinforcing rib.
[0021] In crushing equipment with a large processing capacity, multiple reinforcing ribs of this solution are set up, with the reinforcing ribs and corresponding elastic components set at the three optimal positions at the front, middle and rear to optimize performance.
[0022] Preferably, the elastic component is a leaf spring. The continuous solid structure of the leaf spring, while providing elastic cushioning in the feeding and discharging directions for the crushing load-bearing base plate, also further provides strength reinforcement in the vertical direction, thereby further improving impact resistance.
[0023] Preferably, multiple sets of fixing studs are provided on the upper two sides of the support frame, and connecting waist-shaped holes are provided on the corresponding sides of the crushing load-bearing base plate. The waist-shaped holes are fitted onto the fixing studs, and a longitudinal limiting nut is provided on the upper part of the fixing studs.
[0024] Multiple sets of fixing studs are installed on both sides of the upper part of the support frame to provide stable support points and ensure that the crushing load-bearing base plate is fixed in the correct position. The connecting slotted holes on both sides of the crushing load-bearing base plate allow for fine adjustment of the base plate within a certain range, which, together with the elastic component, allows for elastic fine adjustment of the feed and discharge directions. The longitudinal limit nut is installed on the upper part of the fixing studs to lock the position, restrict the longitudinal movement of the crushing load-bearing base plate, prevent positional deviation during operation, and ensure the stability and safety of the equipment.
[0025] Preferably, the discharge section is connected to a roller device for conveying and screening the discharged material.
[0026] Preferably, an elastic expansion gap is provided between the front of the crushing load-bearing base plate and the power conveying roller, and an elastic expansion gap is provided between the rear of the crushing load-bearing base plate and the discharge section to prevent interference and collision.
[0027] Compared with related technologies, the in-situ tracked impact roller roughing device for stone processing in mining quarrying faces provided by the present invention has the following beneficial effects:
[0028] 1. The heavy-duty chain scraper conveyor of this invention can directly feed in-situ coarse ore after blasting and transport it to the front of the feed inlet. Through scrapers and stone pushers, the material is continuously conveyed to the drive conveyor roller. Under the rolling and spiral guiding action of the drive conveyor roller, heavier, larger pieces of material remain at one end of the drive conveyor roller and are pushed towards the feed inlet. Relatively smaller pieces of material are driven towards the feed inlet and move towards the tail end of the conveying spiral, thus forming a gradient feeding pattern where large stones are fed from one side and small stones from the other. Furthermore, even when large stones block one side of the feed inlet, small and medium-sized stones on the other side can still be continuously fed in and crushed, automatically separating materials of different sizes and improving crushing efficiency.
[0029] 2. The present invention sets up a crushing load-bearing base plate to prevent the crushing impact force from acting on the upper transmission surface of the conveying device, thereby reducing reverse resistance damage and impact damage to the continuously operating conveying device, and reducing the burning and damage of the drive rollers or drive sprockets of the conveying device.
[0030] 3. Material blockage usually occurs when the longitudinal dimension of the material is greater than the height of the foremost feeding hammer on the crushing roller, making it difficult for the hammer to pick up the material. The crushing device of this invention is equipped with a crushing load-bearing base plate and an extension plate of appropriate size. If the lateral dimension of the material along the feeding direction is small, most of it will be pushed onto the crushing load-bearing plate. If its longitudinal dimension is large and the foremost hammer cannot pick up the material, then the material is a long strip-shaped material. The continuous feeding of the subsequent drive conveyor roller pushes the lower end of the long strip-shaped material, thereby turning it to the narrow end for feeding, thus solving the blockage problem itself. If its lateral dimension is also large, a large part of it will be placed on the drive roller. The turning force of the drive roller will help the material to turn to a certain extent. When there is a size direction that matches the feeding direction, it will be picked up by the hammer, which also solves the blockage problem to a certain extent.
[0031] 4. In summary, the tracked impact roller crusher of the present invention solves the problems of easy material blockage and significant damage to the conveying device during in-situ crushing at the quarry face. Attached Figure Description
[0032] Figure 1 is a front view of the present invention;
[0033] Figure 2 is a top view of the present invention;
[0034] Figure 3 is a side view of the present invention;
[0035] Figure 4 is a schematic diagram of the upper power conveying roller and the crushing load-bearing bottom plate of the concave section;
[0036] Figure 5 is a top view of the upper power conveying roller and the crushing load-bearing bottom plate of the concave section.
[0037] Figure 6 is a cross-sectional view of the upper power conveying roller and the crushing load-bearing bottom plate of the concave section;
[0038] Figure 7 is a schematic diagram of the impact roller crusher.
[0039] Figure 8 is a schematic diagram of the roller and breaker structure;
[0040] Figure 9 is a schematic diagram of the working state of the present invention.
[0041] Numbering on the map:
[0042] 1. Tracked drive unit; 2. Impact roller crusher; 3. Heavy-duty chain scraper conveyor; 301. Feed section; 302. Concave section; 303. Discharge section; 4. Support frame; 5. Power conveyor roller; 6. Spiral guide rail; 7. Crushing load-bearing base plate; 8. Machine casing; 9. Roller; 10. Crushing chamber; 11. Drive motor; 12. Hammer; 13. Feed inlet; 12-1. Foremost hammer; 14. Support trough; 15. Baffle plate; 16. High-strength wear-resistant chain link; 17. Scraper; 18. Drive sprocket; 19. Idling sprocket; 20. Upper edge of power conveyor roller; 21. Reinforcing rib plate; 22. First plane; 23. Elastic component; 24. Bearing plate; 25. Fixed pile; 29. Discharge hammer; 30. Longitudinal limiting nut; 31. Upper edge line of feed end. Detailed Implementation
[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0044] As shown in Figures 1 to 9, a crawler-type impact roller roughing device for in-situ stone processing in a mining quarry face has the following detailed structure:
[0045] The device mainly consists of a tracked drive unit 1, an impact roller crusher 2 mounted above the tracked drive unit 1, and a heavy-duty chain scraper conveyor 3 positioned below the impact roller crusher 2. This design allows the entire device to move flexibly, adapting to the complex environment of mining quarry faces, while simultaneously achieving integrated in-situ feeding, crushing, and discharging operations. This simplifies the types of power equipment and reduces the complexity of equipment connection, commissioning, and infrastructure construction.
[0046] The heavy-duty 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 located in front of the impact roller crusher 2 to receive raw materials; the discharge section 303 is located behind the impact roller crusher 2 to discharge the crushed material; and the concave section 302 is located below the impact roller crusher 2 to support and transport materials. This design allows the conveyor to withstand direct feeding of in-situ coarse ore after blasting, effectively transporting the material to the impact roller crusher 2, and enabling integrated output of the crushed material.
[0047] A support frame 4 is installed on the support trough of the concave section 302. Multiple parallel power conveying rollers 5 are arranged sequentially on the support frame from the inlet to the outlet direction. The power conveying rollers mainly consist of an outer roller, shaft, bearings, drive unit, and support structure. The outer roller is cylindrical, and the drive unit, consisting of a motor, reducer, and coupling, provides rotational power to the outer roller. A spiral guide rail 6 is provided around the circumference of the outer roller 5, guiding the material in the inlet direction. This allows for a gradient feeding pattern during material conveying, with larger stones fed from one side and smaller stones from the other. This design not only improves crushing efficiency but also reduces material blockage.
[0048] The upper surface of the power conveyor roller 5 is not higher than the upper conveying plane of the heavy-duty chain scraper conveyor to ensure smooth material conveying. A crushing load-bearing base plate 7 is connected to the rear of the power conveyor roller 5. The crushing load-bearing base plate 7 is positioned below the impact roller crusher 2 to withstand the impact force during the crushing process. The crushing load-bearing base plate 7 is connected to the support trough via a support frame 4 and is elastically connected to the support trough along the feed direction to reduce reverse resistance and impact damage to the heavy-duty chain scraper conveyor. A discharge section 303 is located behind the crushing load-bearing base plate 7.
[0049] The impact roller crusher 2 includes a housing 8 and a roller 9, as well as a crushing chamber 10, a feed inlet, a discharge cover, and other components. The roller 9 is mounted on a support trough via a bearing seat. The crushing load-bearing base plate 7 and the inner cavity of the housing 8 are combined to form the crushing chamber 10, which is used to contain and crush materials. The roller 9 is placed in the crushing chamber 10 above the crushing load-bearing base plate 7. The impact roller crusher 2 includes a drive motor 11. The drive motor 11 drives the V-belt pulley at the end of the roller 9 to rotate via a V-belt, thereby driving the roller 9 to rotate at high speed. Then, the hammer 12 efficiently chisels and crushes the material.
[0050] The feed inlet 13 of the impact roller crusher 2 is located above the crushing support plate 7. The distance between the outer edge of the first hammer 12-1 of the roller 9, which is the first to feed, and the vertical projection of the outer edge of the first feeding edge of the crushing support plate 7 is no more than half the vertical projection distance of the first hammer 12-1 from the crushing support plate 7. This design ensures that the material can smoothly enter the crushing chamber 10 for crushing. Occasionally, if a large stone blocks one side of the feed inlet due to its size, it can clear the blockage on its own, reducing the frequency of downtime for material removal.
[0051] In addition, the heavy-duty chain scraper conveyor 3 equipped with the tracked crushing device includes multiple components such as a trough, baffles 15, high-strength wear-resistant chain links 16, and scrapers 17. A motor is connected to a reducer via a high-speed shaft coupling, driving the drive sprocket 18 to rotate. The trough includes support troughs 14 located on both sides, which are connected to the carrier frame of the tracked drive unit 1. A drive sprocket 18 is installed at one end of each side of the trough, and multiple redirecting sprockets 19 are installed at the other end and at the corner of the concave section. High-strength wear-resistant chain links 16 are fitted onto the drive sprockets 18 and redirecting sprockets 19, and scrapers 17 are evenly spaced on the high-strength wear-resistant chain links 16. The main shaft of the drive sprocket 18 is connected to a motor drive assembly, providing power for the conveyor's operation, thereby driving the scrapers 17 to move on the high-strength wear-resistant chain links 16, achieving smooth material transport.
[0052] The beneficial effects of this invention are as follows: The heavy-duty chain scraper conveyor 3 can directly feed in-situ coarse ore after blasting and transport it to the front of the feed inlet. The scraper 17 and pusher stones continuously convey the material to the drive conveyor roller. Under the rolling and spiral guiding action, the heavier, larger pieces of material remain at one end of the drive conveyor roller and are pushed towards the feed inlet, while relatively smaller pieces are driven towards the feed inlet and distributed towards the tail end of the conveying spiral, thus forming a gradient feeding pattern where large stones are fed from one side and small stones from the other. Furthermore, even when large stones block one side of the feed inlet, the smaller stones on the other side can still be continuously fed in and crushed, improving crushing efficiency.
[0053] The crushing load-bearing base plate 7 is set to prevent the crushing impact force from acting on the upper transmission surface of the conveying device, thereby reducing the reverse resistance and impact damage to the conveying device and reducing the burning and damage of the drive roller or drive sprocket 18 of the conveying device.
[0054] Large material blockages typically occur when the longitudinal dimension of the material exceeds the height of the foremost feeding hammer on the crushing roller 9, making it difficult for the hammer to pick up the material. The crushing device of this invention features a suitable-sized crushing support plate 7 with an extended front plate. If the lateral dimension of the material along the feeding direction is small, most of it is pushed onto the crushing support plate. However, if its longitudinal dimension is large, making it difficult for the foremost hammer 12-1 to pick up, and the material is a long, strip-shaped piece, the continuous feeding of the subsequent drive conveyor roller pushes the lower end of this long, strip-shaped material, causing it to flip and enter through a narrow end, thus resolving the blockage problem. If its lateral dimension is also large, a significant portion will be placed on the drive roller, where the tumbling force of the drive roller helps to tumble the material. Once a piece meets the feeding dimension, it is picked up by the hammer 12, also resolving the blockage problem to some extent.
[0055] The tracked drive unit 1 serves as the load-bearing base, making the equipment easy to move and adjust its work position, allowing for flexible operation in various scenarios and improving adaptability to different work sites. It is also more suitable for in-situ flexible operation at quarry faces in mines. Combined with the heavy-duty chain scraper conveyor 3, it achieves integrated in-situ feeding, crushing, and discharging at quarry faces, simplifying the types of power equipment and reducing the complexity of connecting, debugging, and infrastructure construction. For motor drives, both the conveying and crushing devices use 10kV high-voltage permanent magnet motors, resulting in significant energy savings. The application of a PLC frequency conversion control system enables precise adjustment of the feeding speed and roller height 9 of the heavy-duty chain scraper conveyor 3, further improving equipment performance and efficiency, reducing energy-intensive transportation of raw ore, contributing to energy conservation and emission reduction, and making it more environmentally friendly and efficient.
[0056] In other specific embodiments, the crushing support plate 7 is set at a slight inclination, with the inlet end lower and the outlet end higher, and the acute angle between it and the horizontal plane is no greater than 5 degrees. This design helps to expand the inlet and lengthen the effective crushing path, thereby increasing the crushing ratio. At the same time, the upper edge 31 of the inlet end of the crushing support plate 7 is higher than the upper edge 20 of the power conveying roller, and the height difference is no more than one-tenth of the inlet size of the impact roller crusher 2. This design allows the material to roll onto the slightly higher crushing support plate 7 at a slightly lower position during the conveying process, pushing the material at a small angle like a stone pusher. This helps to push the material from the bottom to the front of the feed, reducing material deposition, increasing pushing activity, reducing material padding at the inlet, and reducing material blockage. On the other hand, a padding layer is generated in the crushing chamber 10 to protect the crushing support plate 7. Stone-on-stone and stone-on-stone grinding within the crushing chamber 10 reduces equipment wear and increases the crushing ratio.
[0057] In other specific embodiments, a reinforcing rib plate 21 is laterally arranged below the crushing load-bearing base plate 7. The reinforcing rib plate 21 includes a first plane 22 extending laterally and perpendicular to the material feeding and discharging direction. The first plane 22 is connected to an elastic component 23 with an elastic force perpendicular to it. The elastic component is connected to a bearing plate 24. Both ends of the bearing plate 24 extend from the sides of the concave section and are connected to fixed piles 25. The fixed piles 25 are used to be inserted into the underground of the quarry working face for pile fixing. The fixed piles 25 can penetrate deep into the underground of the quarry working face to provide stable support for the equipment. This embodiment helps to increase the strength of the crushing load-bearing base plate 7, and maximizes the lateral impact force of the crushing hammer 12 to be directed to the fixed piles 25 and then to the working ground for absorption through the elastic component 23. This reduces the lateral impact on the support trough of the heavy-duty chain scraper conveyor 3 and also reduces the lateral impact on the base of the crawler drive unit. For the same processing capacity, the crushing equipment can be lightweight in terms of bearing and support equipment, reducing costs, optimizing equipment performance, and extending service life.
[0058] In other specific embodiments, the number of reinforcing ribs 21 can also be adjusted. In crushing equipment with a small processing capacity, one reinforcing rib 21 is sufficient; while in crushing equipment with a larger processing capacity, multiple reinforcing ribs 21 are used to optimize the impact resistance and stability of the equipment.
[0059] As shown in Figure 5, at least one reinforcing rib 21 is provided, which is located on the vertical hammer surface where the foremost hammer 12-1 of the roller 9 is located. The force exerted by the foremost hammer 12-1 of the roller 9 on the stone is mostly a vertically downward chiseling force, which has the greatest impact on the crushing load-bearing base plate 7. Therefore, the reinforcing rib 21 is provided here to optimize the impact resistance of the equipment. In the subsequent downward action of the hammer 12, the chiseling force and the more persistent squeezing and abrasive forces work together, and the force in the vertically downward direction gradually weakens while the force towards 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, making it easier for the force on the material to spread, persist, and be homogenized, which is beneficial for the uniform crushing and smaller particle size crushing of the material.
[0060] In other specific embodiments, at least three reinforcing ribs 21 are provided, namely a first reinforcing rib, a second reinforcing rib, and a third reinforcing rib. The first reinforcing rib is provided on the vertical surface of the foremost hammer 12-1 of the roller 9, the third reinforcing rib is provided on the vertical surface of the narrowest discharge hammer 29, and the second reinforcing rib is provided at the centerline position between the first and third reinforcing ribs. The reinforcing ribs 21 and the corresponding elastic components 23 are provided at the three optimal positions at the front, middle, and rear to optimize performance.
[0061] In this embodiment, the elastic component 23 is a leaf spring structure. The leaf spring is a continuous solid structure that provides elastic cushioning in the feed and discharge directions for the crushing load-bearing base plate 7, while also providing enhanced strength in the vertical direction, further improving impact resistance. Multiple sets of fixing studs (not shown) are provided on both sides of the upper part of the support frame 4, and connecting slotted holes (not shown) are provided on both sides of the corresponding positions of the crushing load-bearing base plate 7. The slotted holes fit over the fixing studs, and a longitudinal limiting nut 30 is provided on the upper part of the fixing studs. The multiple sets of fixing studs provide stable support points, ensuring that the crushing load-bearing base plate 7 is fixed in the correct position. The connecting slotted holes on both sides of the crushing load-bearing base plate 7 allow for fine-tuning of the base plate within a certain range, cooperating with the elastic component 23 for elastic fine-tuning in the feed and discharge directions. The longitudinal limiting nut 30 is installed on the upper part of the fixing studs to lock the position, restricting the longitudinal movement of the crushing load-bearing base plate 7, preventing positional deviation during operation, and ensuring equipment stability and safety. The discharge section is connected to a roller conveyor for conveying and screening the discharged material. An elastic expansion joint is provided between the front of the crushing load-bearing base plate 7 and the power conveying roller 5, and an elastic expansion joint is provided between the rear of the crushing load-bearing base plate 7 and the discharge section to prevent interference and collision.
[0062] The tracked crushing device in this embodiment fully considers strength, stability, energy efficiency, adaptability, and material handling efficiency in its design and mechanical structure, achieving efficient and reliable in-situ coarse crushing operations in mines. It not only improves equipment performance and efficiency but also reduces operating costs and maintenance difficulty, bringing significant economic benefits and practical value to users.
[0063] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A crawler-type impact roller roughing device for in-situ stone processing at a mining quarry face, characterized in that: It includes a tracked drive unit, an impact roller crusher is installed above the tracked drive unit, and a heavy-duty chain scraper conveyor is installed below the impact roller crusher. The heavy-duty chain scraper conveyor includes an integrally formed feeding section, a concave section, and a discharging section. The feeding section is located in front of the impact roller crusher, the discharging section is located behind the impact roller crusher, and the concave section is located below the impact roller crusher. A support frame is provided on the support trough of the concave section. Multiple parallel power conveying rollers are arranged sequentially on the support frame from the feeding direction to the discharging direction. The outer circumference of each power conveying roller is provided with a spiral guide rail that guides it in the feeding direction. The upper surface of each power conveying roller is not higher than the upper conveying plane of the heavy-duty chain scraper conveyor. A crushing load-bearing base plate is connected to the discharging section of the power conveying roller and is positioned below the impact roller crusher. The crushing load-bearing base plate is connected to the support trough via the support frame, and the crushing load-bearing base plate and the support trough are elastically connected along the feeding and discharging directions. The discharging section is located behind the crushing load-bearing base plate. The impact roller crusher includes a housing and rollers. The rollers are mounted on the support groove via bearing seats, placing them within the crushing chamber above the crushing load-bearing base plate. The impact roller crusher includes a drive motor, which drives the V-belt pulley at the end of the rollers to rotate via a V-belt, thereby causing the rollers to rotate at high speed. The crushing load-bearing base plate and the inner cavity of the housing together form the crushing chamber. The feed inlet of the impact roller crusher is located above the crushing load-bearing base plate. The distance between the outer edge of the foremost hammer of the roller, which is the first to feed material, and the vertical projection of this hammer onto the crushing load-bearing base plate, and the foremost outer edge of the crushing load-bearing base plate, is no greater than half the vertical projection distance between the foremost hammer and the crushing load-bearing base plate.
2. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 1, characterized in that: The heavy-duty chain scraper conveyor includes support troughs on both sides, which are connected to the carrier frame of the tracked drive unit. A drive sprocket is provided at one end of each side of the trough, and multiple redirecting sprockets are provided at the other end and at the corner of the concave section. High-strength wear-resistant chain links are fitted on the drive sprockets and the redirecting sprockets. Scrapers are evenly spaced on the high-strength wear-resistant chain links. The main shaft of the drive sprocket is connected to a motor drive assembly.
3. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 1, characterized in that: The crushing load-bearing base plate is set at a slight inclination with the feed end lower and the discharge end higher, and the acute angle between it and the horizontal plane is no more than 5 degrees. The upper edge of the feed end of the crushing load-bearing base plate is higher than the upper edge of the power conveying roller, and the height difference is no more than one-tenth of the feed inlet size of the impact roller crushing device.
4. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 1, characterized in that: A reinforcing rib is horizontally arranged below the crushing load-bearing base plate. The reinforcing rib includes a first plane that extends horizontally and is perpendicular to the material feeding and discharging direction. The first plane is connected to an elastic component with an elastic force perpendicular to it. The elastic component is connected to a bearing plate. Both ends of the bearing plate extend from both sides of the concave section and are connected to fixed piles. The fixed piles are used to be inserted into the underground of the quarry working face for pile fixing.
5. The in-situ tracked impact roller roughing device for stone processing in a mining quarry face according to claim 4, characterized in that: The reinforcing rib is provided as at least one, and the reinforcing rib is provided on the plumb surface where the foremost hammer head of the roller is located.
6. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 4, characterized in that: The reinforcing ribs are configured with at least three, namely a first reinforcing rib, a second reinforcing rib, and a third reinforcing rib. The first reinforcing rib is disposed on the vertical surface of the foremost hammer of the roller, the third reinforcing rib is disposed on the vertical surface of the hammer at the discharge port, and the second reinforcing rib is disposed at the centerline position between the first reinforcing rib and the third reinforcing rib.
7. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 4, characterized in that: The elastic component is a leaf spring.
8. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 1, characterized in that: Multiple sets of fixing studs are provided on the upper two sides of the support frame, and connecting waist-shaped holes are provided on the corresponding sides of the crushing load-bearing base plate. The waist-shaped holes are fitted onto the fixing studs, and longitudinal limiting nuts are provided on the upper part of the fixing studs.
9. The in-situ tracked impact roller roughing device for stone processing in a mining quarry face according to claim 1, characterized in that: The discharge section is connected to a roller device.
10. The in-situ tracked impact roller roughing device for quarrying face roughing according to claim 1, characterized in that: An elastic expansion joint is provided between the front of the crushing load-bearing base plate and the power conveying roller, and an elastic expansion joint is provided between the rear of the crushing load-bearing base plate and the discharge section.