Heavy-duty belt conveyor for gangue sorting

Abstract

The utility model provides a kind of heavy-duty belt conveyor for gangue sorting, it relates to the field of conveyor belt, the scheme used is: bottom frame is sequentially provided with roller group one, roller group two and roller group three along its length direction, the area where roller group two is located is gangue sorting area, and roller group one and roller group three all include multiple roller supports one, roller support one includes horizontal beam, and inclined beam is respectively arranged at the both ends of horizontal beam, and there is included angle one between inclined beam and horizontal beam, included angle one is obtuse angle, roller cylinder is rotatably arranged on horizontal beam and inclined beam, and roller group two includes multiple support beams, intermediate roller is rotatably arranged on support beam, multiple intermediate rollers are at the same height with roller cylinder on multiple horizontal beams and the central surface is coplanar, and horizontal roller is rotatably arranged at the both ends of support beam, and horizontal roller is coaxially arranged with intermediate roller.The utility model can avoid material gathering and accumulation, avoid causing gangue to be shielded, and improve the qualified rate of sorting.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belts, and more particularly to a heavy-duty belt conveyor for sorting gangue. Background Technology

[0002] Gangue is a black solid rock that occurs alongside coal during its formation. It has a low carbon content and low calorific value, but a large amount of gangue is often carried along with coal during mining. In the deep processing of coal, gangue pre-selection is a crucial step in coal mine production, which can greatly improve coal quality and utilization rate, and reduce coal transportation costs.

[0003] In existing technology, coal mixed with gangue is then screened by a vibrating screen. The large coal chunks and gangue obtained from the screening are transported to a manual sorting line via a heavy-duty belt conveyor. The large gangue is then sorted manually. The medium and small coal chunks and gangue obtained from the screening are transported to an intelligent sorting line via another heavy-duty belt conveyor. The intelligent sorting line is equipped with detection equipment and execution equipment. The detection equipment includes a camera and an LED light source. The execution equipment includes a solenoid valve and a spray gun. The camera takes pictures of the coal mine to determine whether there is gangue. Then, the spray gun blows the small gangue into the hopper on one side of the heavy-duty belt conveyor, thus realizing intelligent sorting.

[0004] When sorting gangue using the above technical solutions, whether manual or intelligent sorting, the material needs to be spread as flat as possible on the belt to facilitate the discovery of gangue. However, in the above technical solutions, the idler support of the heavy-duty belt conveyor has a U-shaped structure, with three rotating idlers on the idler support. The two symmetrical idlers are set at an angle, forming an approximately U-shaped structure on the belt above. This can prevent material spillage, but this belt shape structure causes the material to accumulate in the middle of the belt, which does not allow a large amount of gangue to be seen by the camera or sorting personnel, affecting the accuracy of judgment and thus affecting the sorting pass rate. Utility Model Content

[0005] To address the technical problem that the U-shaped state of the belt conveyor affects the accuracy of gangue detection in the prior art, this utility model provides a heavy-duty belt conveyor for gangue sorting, which can prevent material accumulation and avoid obstruction of gangue, thereby improving the sorting qualification rate.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a heavy-duty belt conveyor for gangue sorting, including a base frame, on which a belt is installed. Idler groups one, two, and three are sequentially arranged along the length of the base frame. The area where idler group two is located is the gangue sorting area. Idler groups one and three each include multiple idler supports one. Each idler support one includes a horizontal beam, with inclined beams respectively installed at both ends of the horizontal beam. The inclined beams and the horizontal beams form an angle one, which is an obtuse angle. Rollers are rotatably installed on both the horizontal beams and the inclined beams. Idler group two includes multiple support beams, with intermediate idlers rotatably installed on the support beams. The multiple intermediate idlers are at the same height as the rollers on the multiple horizontal beams and their center planes are coplanar. Horizontal rollers are rotatably installed at both ends of the support beams, and the horizontal rollers are coaxially arranged with the intermediate idlers.

[0007] This invention, by setting a second set of idler rollers in the middle area of ​​the base frame, enables the belt to be laid out flat after moving to the corresponding area due to the lack of support on both sides. This allows the material to be spread out on the belt as it is laid out and moved, preventing the material from accumulating in the middle of the belt and obstructing the gangue, thus improving the sorting qualification rate.

[0008] Furthermore, along the conveying direction, the third idler group is located in front of the first idler group. Along the direction close to the second idler group, the included angle of at least two first idler supports near the end of the second idler group in the first idler group increases sequentially. Along the direction away from the second idler group, the included angle of at least two first idler supports near the end of the second idler group in the third idler group decreases sequentially.

[0009] This invention sets the included angles of multiple idler brackets near both ends of the second idler group to increase and decrease respectively, so that the belt gradually changes from the area where the first idler group is located to the area where the second idler group is located, and from the area where the second idler group is located to the area where the third idler group is located. This avoids belt wear caused by abrupt changes in belt shape, which would affect the service life.

[0010] Furthermore, inclined rollers are provided at both ends of the support beam. The inclined rollers can rotate around the support beam. The inclined rollers are connected to a deformation drive assembly. When the inclined rollers rotate to the upper position, the belt is supported by the inclined rollers and the intermediate support rollers in a U-shaped state. When the inclined rollers rotate to the lower position, the belt is supported by the horizontal rollers and the intermediate support rollers in a flat state.

[0011] This invention, by adding a rotating inclined roller, enables the conveyor to have two working modes: a full-line U-shaped state and a partial U-shaped state, satisfying the functions of sorting gangue and normal material conveying, making it more flexible in use.

[0012] Furthermore, the multiple inclined rollers located at the same end of the support beam are connected to the same deformation drive assembly.

[0013] This invention enables multiple tilting rollers at the same end to rotate synchronously by setting the same deformation drive component at the same end.

[0014] Furthermore, the deformation drive assembly includes a rack and a gear. The rack is horizontally arranged and connected to a drive cylinder. The drive cylinder is horizontally arranged on the base frame and can drive the rack to move along its own length. The gear is rotatably arranged on the support beam and located on one side of the intermediate roller. The gear is connected to a transmission ring. The transmission ring is rotatably arranged on the support beam and coaxially arranged with the horizontal roller. The transmission ring is connected to a support shaft on the inclined roller. There is an angle 2 between the axis of the support shaft and the axis of the transmission ring, and the angle 2 is an acute angle.

[0015] Furthermore, the support beam is mounted on the base frame via a connecting frame, the connecting frame being provided with guide grooves, and the rack passing through multiple guide grooves and being able to move within the guide grooves.

[0016] Furthermore, a support ball is rotatably provided at the end of the support shaft away from the transmission ring. The diameter of the support ball is larger than the diameter of the inclined roller. During the rotation of the transmission ring, the support ball can roll and rub against the belt.

[0017] This invention reduces the friction between the tilting roller and the belt when the tilting roller rotates by setting a support ball, thus ensuring smooth rotation of the tilting roller.

[0018] Furthermore, the support shaft is connected to the circumferential surface of the transmission ring, and a reinforcing rod is also provided between the support shaft and the transmission ring.

[0019] This invention enhances the support strength of the support shaft by setting a reinforcing rod, thus preventing deformation.

[0020] As can be seen from the above technical solutions, this utility model has the following advantages: This utility model provides a heavy-duty belt conveyor for gangue sorting. By setting a second set of idlers in the middle area of ​​the base frame, the belt can be laid out flat after moving to the corresponding area due to the lack of support on both sides. This allows the material to be spread evenly on the belt due to the flattening of the belt and the vibration during movement, preventing the material from accumulating in the middle of the belt and obstructing the gangue, thus improving the sorting quality. By setting the included angle of the multiple idler brackets near both ends of the second set of idlers to increase and decrease respectively, the belt can move from the area where the first set of idlers is located to the area where the second set of idlers is located, and from the area where the second set of idlers is located to the idler brackets. The area of ​​Group 3 features a gradual change to prevent abrupt changes in belt shape that could cause belt wear and affect its service life. The addition of rotating inclined rollers allows the conveyor to operate in two modes: a full-line U-shape and a partial U-shape, satisfying both gangue sorting and normal material conveying functions, making it more flexible. The same deformation drive assembly at the same end allows multiple inclined rollers to rotate synchronously. Support balls reduce friction between the inclined rollers and the belt during rotation, ensuring smooth roller rotation. Reinforcing rods enhance the support strength of the support shaft, preventing deformation. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram showing the horizontal support state of the roller group after the belt is removed in a specific embodiment of this utility model.

[0023] Figure 2 This is a schematic diagram showing the state of the second U-shaped support of the roller group after the belt is removed in a specific embodiment of this utility model.

[0024] Figure 3 This is a schematic diagram of the structure of roller group three or roller group one in a specific embodiment of this utility model.

[0025] Figure 4 This is a schematic diagram of the state of the U-shaped support of the roller group in a specific embodiment of this utility model.

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] Figure 6 This is a schematic diagram showing the horizontal support state of the roller group 2 in a specific embodiment of this utility model.

[0028] In the diagram, 1. Base frame; 2. Roller group three; 3. Roller group two; 4. Roller group one; 5. Rack; 6. Support ball; 7. Roller bracket one; 8. Roller; 9. Inclined beam; 10. Horizontal beam; 11. Inclined roller; 12. Belt; 13. Horizontal roller; 14. Support shaft; 15. Transmission ring; 16. Intermediate roller; 17. Drive cylinder; 18. Support beam; 19. Reinforcing rod; 20. Gear; 21. Connecting frame; 23. Deformation drive assembly; 24. Guide groove; 25. Angle one; 26. Angle two. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] like Figures 1 to 4 As shown in the figure, this specific embodiment provides a heavy-duty belt conveyor for gangue sorting, including a base frame 1, on which a belt 12 is mounted. Along its length, the base frame 1 is sequentially equipped with idler roller group 4, idler roller group 3, and idler roller group 3. The area where idler roller group 3 is located is the gangue sorting area. Idler roller group 4 and idler roller group 3 each include multiple idler roller supports 7. Each idler roller support 7 includes a horizontal beam 10, with inclined beams 9 mounted at both ends of the horizontal beam 10. The inclined beams 9 and the horizontal beam 10 form an angle of 25°. The included angle 25 is an obtuse angle. Rollers 8 are rotatably mounted on both the horizontal beam 10 and the inclined beam 9 via bearings. The second roller group 3 includes multiple support beams 18. Intermediate rollers 16 are rotatably mounted on the support beams 18 via bearings. The multiple intermediate rollers 16 are at the same height as the rollers 8 on the multiple horizontal beams 10 and their center planes are coplanar. The intermediate rollers 16 and the rollers 8 can always support the middle part of the belt 12. Horizontal rollers 13 are rotatably mounted on both ends of the support beams 18 via bearings. The horizontal rollers 13 are coaxially mounted with the intermediate rollers 16.

[0031] This specific embodiment uses idler group 4, idler group 3, and idler group 3 to form a U-shaped-horizontal-U-shaped segmented conveying structure. Idler group 4 and idler group 3 make belt 12 in a U-shape, ensuring transportation stability and reducing material spillage. At the same time, with the synergistic effect of idler group 3, in the gangue sorting area, belt 12 is horizontally unfolded, so that the material is spread flat on belt 12 as the belt unfolds and moves, reducing the obstruction of gangue by coal blocks, improving the accuracy and comprehensiveness of gangue judgment, and increasing the sorting qualification rate.

[0032] To reduce wear caused by excessive friction due to the shape changes of belt 12, such as Figure 1 and Figure 2 As shown, in this specific embodiment, along the conveying direction, idler group three 2 is located in front of idler group one 4. Along the direction close to idler group two 3, the included angle 25 of at least two idler supports one 7 near the end of idler group two 3 in idler group one 4 increases sequentially. Along the direction away from idler group two 3, the included angle 25 of at least two idler supports one 7 near the end of idler group two 3 in idler group three 2 decreases sequentially. Specifically, the included angle 25 of the two idler supports one 7 located at both ends of idler group two 3 changes sequentially, with the included angle 25 being b. The difference in the included angle 25 between two adjacent idler supports one 7 is (180-b) / 3. In this specific embodiment, b is 150°. Along the direction close to the second idler group 3, the included angle 25 of the idler bracket 7 of the gradual transition section in the first idler group 4 is 160° and 170° respectively. Along the direction away from the second idler group 3, the included angle 25 of the idler bracket 7 of the gradual transition section in the third idler group 2 is 170° and 160° respectively. With this setting, the belt 12 forms a gradual transition from the area where the first idler group 4 is located to the area where the second idler group 3 is located, and from the area where the second idler group 3 is located to the area where the third idler group 2 is located, avoiding the belt 12 from abruptly changing shape and causing wear, thus affecting its service life.

[0033] Sometimes materials do not require sorting. To reduce spillage when this conveyor is transporting unsorted gangue, such as... Figures 4 to 6As shown, in this specific embodiment, inclined rollers 11 are also provided at both ends of the support beam 18. The inclined rollers 11 can rotate around the support beam 18. The inclined rollers 11 are connected to the deformation drive assembly 23. When the inclined rollers 11 rotate to the upper position, the belt 12 of the gangue sorting area is supported by the inclined rollers and the intermediate idler rollers 16 in a U-shaped state. When the inclined rollers 11 rotate to the lower position, the belt 12 of the gangue sorting area is supported by the horizontal rollers 13 and the intermediate idler rollers 16 in a flat state. To ensure synchronous deformation, multiple inclined rollers 11 located at the same end of the support beam 18 are connected to the same deformation drive assembly. In this specific embodiment, the deformation drive assembly 23 includes a rack 5 and a gear 20. The rack 5 is horizontally arranged and connected to the gear 20. A drive cylinder 17 is connected and horizontally mounted on the base frame 1. The piston rod of the drive cylinder 17 is connected to the rack 5, and the drive cylinder 17 can drive the rack 5 to move along its own length. Specifically, the support beam 18 is mounted on the base frame 1 via a connecting frame 21. The connecting frame 21 is provided with guide grooves 24. The rack 5 passes through multiple guide grooves 24 and can move within the guide grooves 24. A gear 20 is rotatably mounted on the support beam 18 via a bearing and is located on one side of the intermediate roller 16. The gear 20 is connected to a transmission ring 15, and the gear 20 can drive the transmission ring 15 to rotate together. The transmission ring 15 is rotatably mounted on the support beam 18 via a bearing and is coaxially mounted with the horizontal roller 13. The transmission ring 15 and... The inclined roller 11 is connected to a support shaft 14. An angle 26 exists between the axis of the support shaft 14 and the axis of the transmission ring 15. This angle 26 is acute; in this specific embodiment, the angle 26 is α, which is 30°. When the drive cylinder 17 extends, the rack 5 moves linearly, causing the gear 20 to rotate by a certain angle. This, in turn, drives the support shaft 14 to rotate via the transmission ring 15, causing the inclined roller 11 to rotate below the horizontal roller 13 and no longer contact the belt 12. The belt 12 is then horizontally spread out. When the drive cylinder 17 retracts, the belt 12 forms a U-shape. Preferably, the end of the support shaft 14 away from the transmission ring 15 is rotatably provided with a support ball 6 via a bearing and a connecting shaft. The diameter of the support ball 6 is larger than that of the inclined roller 11. During the rotation of the transmission ring 15, the support ball 6 can roll and rub against the belt 12. By setting the support ball 6, the friction between the inclined roller 11 and the belt 12 can be reduced when the inclined roller 11 rotates, ensuring that the inclined roller 11 rotates smoothly. In order to enhance the support strength of the support shaft 14, the support shaft 14 is welded to the circumferential surface of the transmission ring 15, and a reinforcing rod 19 is also welded between the support shaft 14 and the transmission ring 15. By using the rotation method to drive the belt to change shape, compared with driving the horizontal roller 13 to swing, it is easier to realize the synchronous movement of multiple idler supports, ensuring the synchronicity of movement, making belt deformation easier and more efficient.

[0034] In this specific embodiment, the roller bracket 7 is a bent integrated structure, and both the support beam 18 and the support shaft 14 are made of high-strength steel, with diameters larger than those of the support beam 18 and the inclined beam 9.

[0035] The working process of this heavy-duty belt conveyor used for gangue sorting is as follows: When it is necessary to sort gangue, the belt 12 is adjusted before conveying so that the inclined roller 11 rotates to the point where the lower part of the horizontal roller 13 no longer supports the belt 12. At this time, the belt 12 located in the gangue sorting area can be supported on the intermediate idler roller 16 and the horizontal roller 13 and is in a horizontal state. Then the material is fed, and the belt 12 carries the material from idler group 1 4 and idler group 2 3 to idler group 3 2.

[0036] When there is no need to sort gangue, the belt 12 is shaped and adjusted before conveying, so that the inclined roller 11 rotates to support the belt 12 above the horizontal roller 13. At this time, the belt 12 located in the gangue sorting area can be supported on the intermediate idler roller 16 and the inclined roller 11, forming a U-shape. Then the material is fed, and the belt 12 carries the material from idler group 1 4 and idler group 2 3 to idler group 3 2.

[0037] As can be seen from the above specific embodiments, this utility model has the following beneficial effects: 1. By setting roller group 2 3 in the middle area of ​​the base frame 1, the belt 12 can be laid out flat after moving to the corresponding area due to the lack of support on both sides. This allows the material to be spread out on the belt 12 as it is laid out and vibrated during movement, thus preventing the material from accumulating in the middle of the belt 12 and obstructing the gangue, thereby improving the sorting qualification. 2. By setting the included angle of multiple roller brackets 7 near both ends of roller group 2 3 to increase and decrease respectively, the belt 12 can gradually change from the area where roller group 1 4 is located to the area where roller group 2 3 is located and from the area where roller group 2 3 is located to the area where roller group 3 2 is located, thus avoiding the belt 12 from wearing due to abrupt changes in shape and affecting its service life. 3. By adding a rotating inclined roller 11, this conveyor can have two working modes: a full-line U-shaped state and a partial U-shaped state, which can meet the functions of sorting gangue and normal material conveying, making it more flexible in use; 4. By setting the same deformation drive component 23 at the same end, multiple tilting rollers 11 at the same end can rotate synchronously; 5. By setting the support ball 6, the friction between the tilting roller 11 and the belt 12 can be reduced when the tilting roller 11 rotates, ensuring that the tilting roller 11 rotates smoothly; by setting the reinforcing rod, the support strength of the support shaft 14 is enhanced to prevent deformation.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heavy-duty belt conveyor for sorting gangue, comprising a base frame (1) on which a belt (12) is mounted, characterized in that, The base frame (1) is provided with roller group one (4), roller group two (3) and roller group three (2) in sequence along its length. The area where roller group two (3) is located is the gangue sorting area. Both roller group one (4) and roller group three (2) include multiple roller supports one (7). The roller support one (7) includes a horizontal beam (10). Inclined beams (9) are provided at both ends of the horizontal beam (10). The inclined beams (9) and the horizontal beams (10) have an angle one (25) between them. The angle one (25) is 25°. 5) The angle is obtuse. Rollers (8) are rotatably arranged on both the horizontal beam (10) and the inclined beam (9). The roller group 2 (3) includes multiple support beams (18). Intermediate rollers (16) are rotatably arranged on the support beams (18). The multiple intermediate rollers (16) are at the same height as the rollers (8) on the multiple horizontal beams (10) and their center planes are coplanar. Horizontal rollers (13) are rotatably arranged at both ends of the support beams (18). The horizontal rollers (13) are coaxially arranged with the intermediate rollers (16).

2. The heavy-duty belt conveyor for gangue sorting as described in claim 1, characterized in that, Along the conveying direction, the third idler group (2) is located in front of the first idler group (4). Along the direction close to the second idler group (3), the included angle (25) of at least two first idler supports (7) near the end of the second idler group (3) in the first idler group (4) increases sequentially. Along the direction away from the second idler group (3), the included angle (25) of at least two first idler supports (7) near the end of the second idler group (3) in the third idler group (2) decreases sequentially.

3. The heavy-duty belt conveyor for gangue sorting as described in claim 2, characterized in that, The support beam (18) is also provided with inclined rollers (11) at both ends. The inclined rollers (11) can rotate around the support beam (18). The inclined rollers (11) are connected to a deformation drive assembly (23). When the inclined rollers (11) rotate to the top, the belt (12) is supported by the inclined rollers (11) and the intermediate rollers (16) in a U-shaped state. When the inclined rollers (11) rotate to the bottom, the belt (12) is supported by the horizontal rollers (13) and the intermediate rollers (16) in a flat state.

4. The heavy-duty belt conveyor for gangue sorting as described in claim 3, characterized in that, Multiple inclined rollers (11) located at the same end of the support beam (18) are connected to the same deformation drive assembly (23).

5. The heavy-duty belt conveyor for gangue sorting as described in claim 4, characterized in that, The deformation drive assembly (23) includes a rack (5) and a gear (20). The rack (5) is horizontally arranged and connected to a drive cylinder (17). The drive cylinder (17) is horizontally arranged on the base frame (1). The drive cylinder (17) can drive the rack (5) to move along its own length direction. The gear (20) is rotatably arranged on the support beam (18) and located on one side of the intermediate roller (16). The gear (20) is connected to a transmission ring (15). The transmission ring (15) is rotatably arranged on the support beam (18) and coaxially arranged with the horizontal roller (13). The transmission ring (15) is connected to the support shaft (14) on the inclined roller (11). There is an included angle (26) between the support shaft (14) and the transmission ring (15). The included angle (26) is an acute angle.

6. The heavy-duty belt conveyor for gangue sorting as described in claim 5, characterized in that, The support beam (18) is mounted on the base frame (1) via a connecting frame (21). The connecting frame (21) is provided with a guide groove (24). The rack (5) passes through multiple guide grooves (24) and can move within the guide grooves (24).

7. The heavy-duty belt conveyor for gangue sorting as described in claim 6, characterized in that, A support ball (6) is rotatably provided at the end of the support shaft (14) away from the transmission ring (15). The diameter of the support ball (6) is larger than the diameter of the inclined roller (11). During the rotation of the transmission ring (15), the support ball (6) can roll and rub against the lower surface of the belt (12).

8. The heavy-duty belt conveyor for gangue sorting as described in claim 7, characterized in that, The support shaft (14) is connected to the circumferential surface of the transmission ring (15), and a reinforcing rod (19) is also provided between the support shaft (14) and the transmission ring (15).

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