An automatic deviation-correcting belt conveyor

Abstract

This invention relates to an automatic belt conveyor with a deviation correction mechanism, comprising a main body, a drive mechanism, an idler roller mechanism, and an automatic deviation correction mechanism. The automatic deviation correction mechanism is located on the front and rear sides of two main crossbeams and includes a deviation correction fixing frame, an upper frame assembly, two braking assemblies, two deviation correction flat idlers, and two side idlers. The deviation correction fixing frame is mounted on the two main crossbeams, and the deviation correction frame body is mounted on the fixing frame via a central vertical pin. The two deviation correction flat idlers are mounted on the deviation correction frame body and can rotate freely. The brake seats of the braking assemblies are connected to the deviation correction frame body via horizontal pins, and the inner side of the brake seats extends to the corresponding deviation correction flat idlers. Damping blocks are mounted on the brake seats and used to brake the rotating deviation correction flat idlers. The side idlers are vertically mounted on their respective support seats and can rotate freely. This invention has a reasonable structure and can automatically correct belt deviations during the conveying process, greatly reducing the maintenance frequency of the belt conveyor and improving operational reliability and conveying efficiency.

Description

Technical Field

[0001] This invention relates to an automatic belt conveyor with corrective alignment, belonging to the technical field of belt conveyors. Background Technology

[0002] Belt conveyors are widely used in solid waste treatment to meet the requirement of large material throughput. However, due to the complex composition of solid waste, belt misalignment is frequent, affecting normal feeding. To prevent belt misalignment, belt conveyors mostly use V-shaped idlers, consisting of two symmetrical side idlers and a central central idler, forming a flat center and sloping sides as the belt passes over them. However, during the transport of solid waste, uneven material distribution increases running resistance and leads to frequent belt misalignment. Belt misalignment causes significant material leakage, necessitating frequent shutdowns for manual correction, reducing belt operation time, and increasing the workload and costs of maintenance personnel due to the labor intensity of belt adjustment and cleaning. Especially when inspections are not timely, belt tearing and shaft breakage accidents can occur, posing safety hazards and increasing the cost of frequent belt and main shaft replacements.

[0003] To prevent belt misalignment, existing anti-misalignment devices typically have idlers mounted on a channel steel support. A connecting rod is fixedly connected to the inner side of the support, and a slide rail is located on the inner side of the connecting rod. A fixing block is fixedly connected to the inner top of the support, and a dual-shaft motor is fixedly connected to the bottom of the fixing block. The dual-shaft motor drives a first screw and a second screw to rotate, causing the first and second fixing rods to move in opposite directions, facilitating position adjustment. Each fixing rod is connected to its respective cylindrical idler support bracket, which supports the belt. While this anti-misalignment mechanism can adjust the belt position by controlling the position of the fixing rods with a motor, providing a degree of automatic correction, it requires an electric screw drive mechanism, resulting in a complex structure. Furthermore, the vertical shape of the upper cylindrical idlers limits the belt conveyor's load-bearing capacity, making it unsuitable for applications with high material throughput. Secondly, because the belt alignment mechanism is correcting the belt on the carrying side, the material on the belt cannot be evenly distributed, so the machine needs to be stopped for correction, which affects the transportation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic belt conveyor with a reasonable structure that can automatically correct belt deviations during the conveying process, greatly reducing the maintenance frequency of the belt conveyor and improving operational reliability and conveying efficiency.

[0005] The technical solution of the present invention to achieve the above objectives is: an automatic belt correction conveyor, characterized in that: it includes a main body mechanism, a belt, a drive mechanism for driving the belt to run, an idler mechanism for supporting the belt, and an automatic correction mechanism that can automatically correct the belt deviation.

[0006] The main structure includes a main frame, a guide trough support, and a guide trough plate. The main frame includes two main crossbeams and multiple connecting frames connected to the two main crossbeams. At least two guide trough supports are installed on each main crossbeam. The guide trough plate is installed on the guide trough support and is used to cover the end of the belt.

[0007] The drive mechanism includes a motor, a drive roller, and a driven roller. The drive roller and the driven roller are mounted on the front and rear of the two main crossbeams via bearings. The output side of the motor is connected to one side of the drive roller. The driven roller is connected to a belt tensioning mechanism. The belt is mounted on the drive roller and the driven roller.

[0008] The idler mechanism includes an upper idler assembly for supporting the belt on the carrying section and an idler assembly for supporting the return section.

[0009] The belt-supported buffer rollers are provided with upper roller assemblies that are spaced apart on the upper part of the two main crossbeams. The upper roller assembly includes a middle flat roller and two inclined rollers on both sides. The buffer rollers are spaced apart on the lower part of the two main crossbeams. The lower part of the belt is connected to the middle flat roller, the inclined rollers, and the buffer rollers.

[0010] The automatic belt alignment mechanism is located on the front and rear sides of the two main crossbeams, and includes an alignment fixing frame, an upper frame assembly, two braking assemblies, two alignment flat idlers, and two side idlers. The alignment fixing frame is installed on the two main crossbeams. The upper frame assembly includes an alignment frame body, a hinge seat, an end bearing, and an intermediate bearing. The two ends of the alignment frame body are provided with corresponding hinge seats. The center plane of the alignment frame body coincides with the center plane of the belt. The alignment frame body is installed on the alignment fixing frame through a central vertical pin and can swing along the axis of the central vertical pin. The alignment frame body has an end bearing on the inner side of the hinge seat and an intermediate bearing in the middle. The two alignment flat idlers for supporting the return belt are correspondingly installed on the end bearing and the intermediate bearing and can rotate freely.

[0011] The braking assembly includes a brake seat and a damping block. The brake seat is connected to a hinged seat on the straightening frame via a horizontal pin and can swing along the axis of the horizontal pin. The inner side of the brake seat extends to the corresponding straightening flat roller. The damping block is installed on the brake seat and is used to brake the respective rotating straightening flat roller. The side rollers are vertically installed on their respective support seats and can rotate freely. The side rollers are used to limit the end face of the belt.

[0012] This invention employs a main structure formed by two main crossbeams and multiple connecting frames attached to them, creating the main frame of the belt conveyor. Multiple guide trough supports on the main crossbeams can be used to install guide trough plates, which shield both ends of the belt. This protects the belt ends and prevents material spillage, improving the reliability of the belt conveyor. The invention uses a drive mechanism and idler roller mechanism to move the belt between the drive roller, driven roller, upper idler assembly, and buffer idler roller, ensuring reliable operation while simultaneously conveying materials. Furthermore, this invention utilizes an automatic belt correction mechanism that automatically corrects belt deviations. This mechanism is located on the front and rear sides of the two main crossbeams, enabling automatic correction of belt deviations during both forward and reverse operation. It requires no external power, has a simple and reasonable structure, meets the high load-bearing capacity requirements of belt conveyors, and is suitable for applications with large material throughput. This invention's automatic belt deviation correction mechanism employs a hinged deviation correction frame and a fixed deviation correction frame. The fixed deviation correction frame is mounted on the crossbeam of the belt conveyor. Both ends of the deviation correction frame are equipped with brake seats and corresponding side rollers. Once the belt deviates, the deviating belt pushes the corresponding side roller, causing the brake seat to rotate along the rotation center of the horizontal pin. Simultaneously, the damping block on the brake seat brakes the rotating side roller. The radial force generated when the belt deviates pushes the belt to automatically return to the correct position, allowing the belt to quickly return to the correct position when deviation occurs. This invention requires no human intervention, especially for belts located in the return section where no weight is borne, thus eliminating the need to stop the machine. It achieves automatic belt deviation correction during belt conveyor operation, overcoming the shortcomings of existing belt conveyors, such as poor anti-deviation performance and weak deviation control. This invention can automatically adjust belts that deviate during transport, not only improving transportation efficiency but also effectively ensuring the safety and stable operation of the belt conveyor. The automatic belt alignment mechanism of this invention has a simple structure, is easy to install and maintain, greatly reduces the maintenance frequency of belt conveyors, reduces the workload and maintenance costs of maintenance personnel, and improves the reliability of equipment operation. Attached Figure Description

[0013] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the automatic belt conveyor for correcting deviations according to the present invention.

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure along direction A.

[0016] Figure 3 This is a schematic diagram of the cross-section of the automatic belt conveyor of the present invention.

[0017] Figure 4 This is a three-dimensional structural diagram of the automatic correction mechanism of the present invention.

[0018] Figure 5 This is a schematic diagram of the automatic correction mechanism of the present invention.

[0019] Figure 6 yes Figure 5 Schematic diagram of the BB cross-section structure.

[0020] Figure 7 yes Figure 5 A top-view structural diagram.

[0021] Figure 8 yes Figure 7 A schematic diagram of the CC cross-section structure.

[0022] Figure 9 This is a schematic diagram of the automatic correction of the belt when it deviates to the right according to the present invention.

[0023] Figure 10 This is a schematic diagram of the automatic correction of the belt when it deviates to the left in this invention.

[0024] Wherein: 1—Belt, 2—Upper idler assembly, 2-1—Upper idler bracket, 2-2—Intermediate flat idler, 2-3—Inner idler support, 2-4—Inclined idler, 2-5—Outer idler support, 3—Main frame, 3-1—Main crossbeam, 3-2—Connecting frame, 4—Buffer idler, 4-1—Buffer seat, 5—Automatic correction mechanism, 5-1—Side idler, 5-2—Correction fixing frame, 5-21—Angle mounting seat, 5-3—Brake seat, 5-31—Support seat, 5-32—Damping seat, 5-4—Damping block, 5-5—Correction frame body, 5-51—Hinge seat, 5-52—End bearing seat, 5-53—Intermediate bearing seat, 5-6—Central vertical pin Shaft, 5-7—Correction roller, 5-8—Wear-resistant washer, 5-9—Horizontal pin, 5-10—Limiting post, 5-11—Limiting block, 6—Guide trough plate, 7—Baffle, 8—Guide trough bracket, 8-1—Hanging shaft, 8-2—Support slot, 9—Guard cover, 10—Motor, 11—Motor shock absorber seat, 12—Drive roller, 13—Belt tensioning mechanism, 13-1—Adjusting fixing seat, 13-2—Tensioning adjustment component, 14—First cleaning mechanism, 14-1—Cleaning support, 14-2—Baffle plate, 15—Second cleaning mechanism, 15-1—Elastic tensioning component, 15-2—Scraper seat, 15-3—Scraper, 16—Driven roller. Detailed Implementation

[0025] See Figures 1-3 As shown, the present invention provides an automatic belt conveyor for correcting belt deviation, comprising a main body, a belt 1, a drive mechanism for driving the belt, an idler mechanism for supporting the belt, and an automatic correction mechanism 5 for automatically correcting the belt deviation.

[0026] See Figures 1-3As shown, the main structure of the present invention includes a main frame 3, a guide trough support 8, and a guide trough plate 6. The main frame 3 includes two main crossbeams 3-1 and multiple connecting frames 3-2 connected to the two main crossbeams 3-1. The main crossbeams 3-1 and multiple connecting frames 3-2 form the support frame of the belt conveyor and are used to install various mechanisms. At least two guide trough supports 8 are installed on each main crossbeam 3-1. The guide trough plate 6 is installed on the guide trough support 8 and is used to cover both ends of the belt 1. The guide trough plate 6 prevents solid waste from leaking from both ends of the belt 1, protects both ends of the belt 1, and improves the overall strength of the belt conveyor.

[0027] See Figures 1-3 As shown, the upper inner side of the guide trough support 8 of the present invention is provided with at least one support slot 8-2. The positioning block on the guide trough plate 6 is set in the corresponding support slot 8-2. The folded edge of the upper part of the guide trough plate 6 is installed on the guide trough support 8 by fasteners, which facilitates the maintenance of the belt conveyor. The upper part of the guide trough support 8 of the present invention is also provided with a hanging shaft 8-1. The hanging shaft 8-1 is installed on the upper part of the outer protective cover 9. The lower part of the protective cover 9 is installed on the lower part of the guide trough support 8 by a pressing plate. The rear part of the two main crossbeams 3-1 is equipped with a baffle 7. The protective cover 9 can be a plate or a perforated mesh plate.

[0028] See Figures 1-3 As shown, the drive mechanism of this invention includes a motor 10, a driving roller 12, and a driven roller 16. The driving roller 12 and the driven roller 16 are mounted on the front and rear of the two main crossbeams 3-1 via bearing seats. The output side of the motor 10, located at the front of the main crossbeams 3-1, is connected to one side of the driving roller 12. The driven roller 16 is connected to a belt tensioning mechanism 13. The belt 1 is mounted on the driving roller 12 and the driven roller 16. The output side of the motor 10 can be connected to a reducer, and after reduction, the power is transmitted to the driving roller 12 to drive the belt 1 to run in both directions. See Figure 1 , 2 As shown, a motor vibration damping seat 11 is installed on the outer front part of the main crossbeam 3-1 of the present invention. A motor 10 with a reducer is installed on the motor vibration damping seat 11. A first cleaning mechanism 14 for cleaning the belt 1 at the drive roller 12 and a second cleaning mechanism 15 for cleaning the front return belt 1 are installed on the lower part of the two main crossbeams 3-1. The first cleaning mechanism 14 blocks material from entering the lower part of the belt, and the second cleaning mechanism 15 scrapes off residual material adhering to the outer side of the belt, reducing the material entrainment on the belt and the resulting increase in running resistance, thereby further reducing belt deviation. See Figure 2As shown, the first cleaning mechanism 14 of the present invention includes a cleaning support 14-1 and a flexible baffle plate 14-2. The baffle plate 14-2 has a gradually tapering thickness from bottom to top and a convex baffle arc surface. The lower ends of the baffle plate 14-2 extend outward and are connected to the cleaning support 14-1. The cleaning support 14-1 is installed on the lower part of the main crossbeam 3-1. The baffle plate 14-2 can be made of polyurethane or other polymer materials. The top of the baffle plate 14-2 is located at the belt 1 at the lower part of the center plane of the drive roller 12, so as to clean most of the material in time.

[0029] See Figure 2 As shown, the second cleaning mechanism 15 of the present invention includes a scraper seat 15-2, a scraper 15-3, an elastic tensioning assembly 15-1, and an adjusting plate. The scraper 15-3 is detachably mounted on the scraper seat 15-2. The scraper 15-3 can be made of carbide blades and is mounted on the scraper seat 15-2 through clamps and fasteners. The side arms at both ends of the scraper seat 15-2 are connected to the adjusting plate through the elastic tensioning assembly 15-1. The adjusting plate with an adjusting arc groove is mounted on the main crossbeam 3-1. An adjusting member disposed in the adjusting arc groove is connected to the elastic tensioning assembly 15-1. This adjusting member can... Using bolts, the adjusting component moves along the adjusting arc groove to adjust the inclination angle of the scraper 15-3, so that the scraper 15-3 fits against the belt 1. The angle of the scraper 15-3 can be easily adjusted according to the belt wrap angle, which can better scrape off the material adhering to the belt for cleaning without damaging the belt 1. It has good applicability. The elastic tensioning component 15-1 of the present invention can be an existing rubber block component with an outer sleeve. The elastic force provides a certain pre-pressure, so that the scraper 15-3 fits reliably against the belt 1 and always maintains a good cleaning ability to scrape off materials.

[0030] See Figure 2As shown, the main crossbeam 3-1 of this invention has a belt tensioning mechanism 13 installed at its rear. The belt tensioning mechanism 13 includes a guide member, an adjusting fixed seat 13-1, and a tension adjusting member 13-2. The guide member is matched with the guide rail on the main crossbeam 3-1 and connected to the bearing seat of the driven roller 16. The adjusting fixed seat 13-1 is installed on the main crossbeam 3-1. The tension adjusting member 13-2 installed on the adjusting fixed seat 13-1 is connected to the bearing seat of the driven roller 16, allowing the driven roller 16 to move laterally to adjust the tension of the belt 1. A locking member is installed on the tension adjusting member 13-2. The tension adjusting member 13-2 can be a bolt, while the locking member can be a nut. The bearing seat of the driven roller 16 of this invention is equipped with a third cleaning mechanism that moves laterally synchronously with the driven roller 16. The two cleaning members of the third cleaning mechanism are respectively located on the inner side and the outer side of the belt 1. The third cleaning mechanism of the present invention includes a brush seat and an inner brush head and an outer brush head that are detachably installed on the brush seat. The brush seat is connected to the bearing seat of the driven roller 16. The outer brush head cleans the belt 1 at the bottom of the driven roller 16, and the inner brush head cleans the inside of the belt 1, further reducing the phenomenon of belt deviation caused by material entering the driven roller.

[0031] See Figure 1 , 2 As shown, the main crossbeam 3-1 of the present invention includes three assembled crossbeams: a front crossbeam, a middle crossbeam, and a rear crossbeam. The connecting frame 3-2 includes two longitudinal beams and an intersecting diagonal beam fixed on the two longitudinal beams. The two longitudinal beams are installed on the corresponding crossbeams of each segment. The main beam connecting seats at the ends of adjacent crossbeams are fixedly connected by fasteners. Each crossbeam segment is connected to the connecting frame 3-2, as well as at least one upper idler assembly 2 and at least one buffer idler 4. The front crossbeam and the rear crossbeam are equipped with an automatic correction mechanism 5 installed on the inner side of the end buffer idler 4. Therefore, the return section belt enters the automatic correction mechanism 5 after passing through a buffer idler 4, realizing the modular production and assembly of the main frame 3 and each mechanism.

[0032] See Figures 1-3 As shown, the upper idler mechanism of the present invention includes an upper idler assembly 2 for supporting the belt 1 of the carrying section and a buffer idler 4 for supporting the belt 1 of the return section. The upper idler assembly 2 is spaced apart on the upper part of the two main crossbeams 3-1. The upper idler assembly 2 includes a middle flat idler 2-2 and two inclined idlers 2-4 on both sides. Figure 3 As shown, the upper idler assembly 2 of the present invention also includes an upper idler bracket 2-1. The upper idler bracket 2-1 has two outer idler supports 2-5 for supporting the inclined idler 2-4 and two inner idler supports 2-3 for supporting the inclined idler 2-4 and the intermediate flat idler 2-2. The two ends of the intermediate flat idler 2-2 are rotatably mounted on the inner idler supports 2-3, and the two ends of the inclined idler 2-4 are rotatably mounted on the outer idler supports 2-5 and the inner idler supports 2-3. The upper idler bracket 2-1 is mounted on two main crossbeams 3-1. (See...) Figures 1-3As shown, the buffer idler 4 of the present invention is installed at intervals on the lower part of the two main crossbeams 3-1. The buffer idler 4 is installed on the two main crossbeams 3-1 through the buffer seats 4-1 on both sides. The carrying section of the belt 1 is connected to the middle flat idler 2-2 and the inclined idler 2-4, while the return section of the belt is connected to the buffer idler 4. The number of upper idler assemblies 2 and the number of buffer idlers 4 are set according to the properties and weight of the conveyed material and the conveying length of the belt conveyor.

[0033] See Figures 1-3 As shown, the automatic belt alignment mechanism 5 of the present invention is located on the front and rear sides of the two main crossbeams 3-1. The belt conveyor can achieve automatic belt alignment effectively in both forward and reverse rotation. As shown in Figures 3-8, the automatic belt alignment mechanism 5 of the present invention includes a belt alignment fixing frame 5-2, an upper frame assembly, two braking assemblies, two belt alignment flat idlers 5-7, and two side idlers 5-1. The belt alignment fixing frame 5-2 is mounted on the two main crossbeams 3-1. The belt alignment fixing frame 5-2 has angled mounting seats 5-21 with mounting holes on both sides. It is mounted on the main crossbeams 3-1 of the belt conveyor via the angled mounting seats 5-21 and is located at the front and rear of the belt conveyor. Because the belt alignment fixing frame 5-2 is detachably mounted on the main crossbeams 3-1, it can be used for belt conveyors of different specifications and series. As shown in 4 and 5, the correction fixing frame 5-2 of the present invention has angular mounting seats 5-21 at both ends. The correction fixing frame 5-2 can be made of channel steel. The angular mounting seats 5-21 are welded to both ends of the channel steel. Angle support plates are provided on the outer side of the angular mounting seats 5-21 to improve the strength of the angular mounting seats 5-21. Two waist-shaped holes are provided on the flat plate of the angular mounting seats 5-21, which can be used to easily install the automatic correction mechanism 5 on the main crossbeam 3-1 of the belt conveyor with fasteners.

[0034] See Figures 3-8 As shown, the mounting assembly of the present invention includes a correction frame 5-5, a hinge seat 5-51, an end bearing 5-52, and an intermediate bearing 5-53. The correction frame 5-5 has corresponding hinge seats 5-51 at both ends. The hinge seat 5-51 can be two vertical plates. The center plane of the correction frame 5-5 coincides with the center plane of the belt. The correction frame 5-5 is mounted on the correction fixing frame 5-2 through the central vertical pin 5-6 and can swing along the axis of the central vertical pin 5-6. The rotation axis of the central vertical pin 5-6 coincides with the center plane of the correction frame 5-5. The misaligned belt 1 causes the correction frame 5-5 to rotate a certain angle along the axis of the central vertical pin 5-6 to achieve horizontal swinging. The damping block 5-4 brakes the flat roller on the misaligned side, while the flat roller on the other side rotates normally, thus generating a radial force in the opposite direction to straighten the belt 1.

[0035] See Figure 8As shown, a wear-resistant washer 5-8 is provided between the alignment fixing frame 5-2 and the alignment frame body 5-5 of the present invention. A central vertical pin 5-6 passes through the alignment fixing frame 5-2, the wear-resistant washer 5-8, and the alignment frame body 5-5. The upper part of the central vertical pin 5-6 is connected to the alignment frame body 5-5 through an elastic retaining ring. A nut is installed on the central vertical pin 5-6 and connected to the alignment fixing frame 5-2. When the alignment fixing frame 5-2 and the alignment frame body 5-5 are made of channel steel, a connecting seat can also be provided on the alignment fixing frame 5-2 and the alignment frame body 5-5. Therefore, during alignment, the alignment fixing frame 5-2 and the alignment frame body 5-5 will experience wear, and only the wear-resistant washer 5-8 needs to be replaced. See Figure 8 As shown, the central vertical pin 5-6 of the present invention is also provided with an axial oil passage and a radial oil passage. The outer end of the axial oil passage of the central vertical pin 5-6 is connected to the oil filler nozzle, and the outlet of the radial oil passage corresponds to the wear-resistant washer 5-8. Therefore, there is lubricating oil between the central vertical pin 5-6 and the correction fixing frame 5-2, the correction frame body 5-5 and the wear-resistant washer 5-8, which can reduce the frictional resistance of the belt 1 during correction and improve the return speed of the belt 1.

[0036] See Figures 3-8 As shown, the alignment frame 5-5 of the present invention has an end bearing 5-52 on the inner side of the hinge seat 5-51 and an intermediate bearing 5-53 in the middle. Two alignment rollers 5-7 for supporting the return belt 1 are respectively installed on the end bearing 5-52 and the intermediate bearing 5-53 and can rotate freely. The alignment frame 5-5 of the present invention can also be made of channel steel, and the end bearing 5-52 and the intermediate bearing 5-53 are welded to the alignment frame 5-5. The present invention provides a guiding flat roller 5-7, which includes a flat roller and end shafts at both ends. The flat roller is rotatably mounted on the end shafts. The end shafts are provided with corresponding mounting planes. The mounting planes of the end shafts are engaged in the slots of the end shaft seats 5-52 and the intermediate shaft seats 5-53, which facilitates the installation of the flat roller and prevents the end shafts from rotating after installation. The end shafts adopt a shoulder structure, and retaining rings can be installed on the end shafts to prevent axial movement of the flat rollers. Cover plates can also be installed on the end shaft seats 5-52 and the intermediate shaft seats 5-53 to mount the end shafts on the corresponding shaft seats.

[0037] See Figures 3-8As shown, the braking assembly of the present invention includes a brake seat 5-3 and a damping block 5-4. The brake seat 5-3 is connected to a hinge seat 5-51 on the correction frame 5-5 via a horizontal pin 5-9 and can swing along the axis of the horizontal pin 5-9. The inner side of the brake seat 5-3 extends to the corresponding correction roller 5-7. The damping block 5-4 is mounted on the brake seat 5-3 and is used to brake the respective rotating correction roller 5-7, stopping the corresponding correction roller 5-7 from rotating. The side rollers 5-1 are vertically mounted on their respective brake seats 5-3 and can rotate freely. The side rollers 5-1 are used to limit the end face of the belt 1. When the belt 1 deviates, the belt 1 on the deviated side pushes the side roller 5-1, causing the damping block 5-4 on the brake seat 5-3 to brake the flat roller on the deviated side. In the best case, the axis of the two side rollers 5-1 coincides with the axis of the two correction rollers 5-7. The side roller 5-1 of the present invention includes a side roller and a side shaft. The side roller and the side shaft are rotatably connected. The side shaft is provided with a threaded section. The side shaft passes through the mounting hole on the support seat 5-31. The upper and lower sides of the side shaft are respectively fixed to the support seat 5-31 by locking nuts. This not only facilitates the installation of the side roller 5-1, but also facilitates the adjustment of the height of the side roller 5-1.

[0038] See Figures 3-8 As shown, the brake seat 5-3 of the present invention includes an integral support seat 5-31 and a damping seat 5-32. The support seat 5-31 includes a portal-shaped seat with an opening at the bottom. The portal-shaped seat is located outside the hinge seat 5-51 of the correction frame 5-5. The horizontal pin 5-9 is a T-shaped pin, which passes through the portal-shaped seat and the hinge seat 5-51. The shaft is mounted on the T-shaped pin with an elastic pin. The damping seat 5-32 includes side plates located on both sides of the correction frame 5-5 and mounting plates on the top of the side plates. The portal-shaped seat is connected to the side plates. The mounting plates are located on the upper part of the correction frame 5-5. The damping block 5-4 is mounted on the mounting plate and can be disassembled. The structure is simple and the installation is convenient.

[0039] See Figure 5 As shown, the center plane of the correction frame 5-2 of the present invention is provided with at least one limiting post 5-10 to limit the swing angle of the correction frame body 5-5. The limiting post 5-10 corresponds to the stop of the correction frame body 5-5. When the cross section of the correction frame body 5-53 is groove-shaped, it can correspond to both sides. The distance between the center plane of the limiting post 5-10 and the axis of the central vertical pin 5-6 is greater than or equal to the distance between the center plane of the correction flat roller and the axis of the central vertical pin 5-6, so that the central axis of the limiting post 5-10 is located on one side of the side roller 5-1. Therefore, the swing angle of the correction frame body 5-5 is controlled by matching the limiting post 5-10 with both sides of the correction frame body 5-5.

[0040] See Figure 6As shown, the bottom of the brake seat 5-3 and / or the upper part of the correction frame 5-5 of the present invention are provided with a limiting block 5-11. The end face of the limiting block 5-11 does not contact the correction frame 5-5 and the brake seat 5-3. The limiting block 5-11 ensures that the side roller 5-1 on the brake seat 5-3 will not tilt inward.

[0041] See Figure 1 , 2 As shown, when the belt conveyor of the present invention is working, the starting motor 10 drives the drive drum 12 to rotate, causing the belt to run between the drive drum 12 and the driven drum 16. At this time, the belt is positioned on the buffer idler 4 and the guiding flat idler 5-7 of the upper idler assembly 2. See Figure 7 As shown, when the belt of the present invention does not deviate, the center plane of the belt coincides with the center of the automatic correction mechanism 5, that is, the center plane of the belt coincides with the center plane of the correction frame 5-5.

[0042] When the belt deviates to the right, see Figure 9 As shown, under the action of the rightward offset belt, the center plane of the correction frame 5-5 deviates from the center plane of the belt. The belt 1 passes through and pushes the right-side side roller 5-1, causing the damping block 5-4 on the right-side brake seat 5-3 to swing upward along the horizontal pin 5-9. The right-side damping block 5-4 rubs against the right-side correction roller 5-7, thereby stopping the right-side correction roller 5-7 from rotating. Under the continued action of the belt's rightward deviation force, the correction frame 5-5 rotates clockwise to the maximum rotation stroke. At this time, the left-side correction roller 5-7 is still running normally, which will generate a force to the left to guide the belt to the left, thereby returning the belt to the correct position. The radial force generated when the belt deviates to the right pushes the belt to the left to achieve automatic correction.

[0043] When the belt veers to the left, see Figure 10 As shown, under the action of the leftward offset belt, the center plane of the correction frame 5-5 deviates from the center plane of the belt. When the belt 1 passes, it pushes the left idler roller 5-1, causing the damping block 5-4 on the left brake seat 5-3 to swing upward along the horizontal pin 5-9. The left damping block 5-4 rubs against the left correction roller 5-7, thereby stopping the left correction roller 5-7 from rotating. Under the continued action of the belt's leftward deviation force, the correction frame 5-5 rotates counterclockwise to the maximum rotation stroke. At this time, the right correction roller 5-7 is still running normally, which will generate a rightward force to guide the belt to the right, thereby returning the belt to the correct position. The radial force generated when the belt deviates to the left pushes the belt to the right, thus achieving automatic correction.

Claims

1. An automatic belt conveyor for correcting belt alignment, characterized in that: It includes a main body, a belt (1), a drive mechanism for driving the belt (1) to run, an idler mechanism for supporting the belt (1), and an automatic correction mechanism (5) that can automatically correct the belt that is off track. The main structure includes a main frame (3), a guide trough support (8), and a guide trough plate (6). The main frame (3) includes two main crossbeams (3-1) and multiple connecting frames (3-2) connected to the two main crossbeams (3-1). At least two guide trough supports (8) are installed on each main crossbeam (3-1). The guide trough plate (6) is installed on the guide trough support (8) and is used to cover the end of the belt (1). The drive mechanism includes a motor (10), a drive roller (12), and a driven roller (16). The drive roller (12) and the driven roller (16) are mounted on the front and rear of the two main crossbeams (3-1) via bearing seats. The output side of the motor (10) is connected to one side of the drive roller (12). The driven roller (16) is connected to the belt tensioning mechanism (13). The belt (1) is mounted on the drive roller (12) and the driven roller (16). The idler mechanism includes an upper idler assembly (2) for supporting the belt (1) of the carrying section and a buffer idler (4) for supporting the belt (1) of the return section. The upper idler assembly (2) is installed at intervals on the upper part of the two main crossbeams (3-1). The upper idler assembly (2) includes a middle flat idler (2-2) and two inclined idlers (2-4) on both sides. The buffer idlers (4) are installed at intervals on the lower part of the two main crossbeams (3-1). The lower part of the belt (1) is connected to the middle flat idler (2-2), the inclined idlers (2-4) and the buffer idler (4). The automatic correction mechanism (5) is installed on the front and rear sides of the two main crossbeams (3-1), including a correction fixing frame (5-2), an upper frame assembly, two braking assemblies, two correction flat rollers (5-7), and two side rollers (5-1); the correction fixing frame (5-2) is installed on the two main crossbeams (3-1); the upper frame assembly includes a correction frame body (5-5), a hinge seat (5-51), an end bearing seat (5-52), and an intermediate bearing seat (5-53), and the two ends of the correction frame body (5-5) are provided with corresponding hinge seats (5-51). The center plane of the correction frame (5-5) coincides with the center plane of the belt. The correction frame (5-5) is installed on the correction fixing frame (5-2) through the central vertical pin (5-6) and can swing along the axis of the central vertical pin (5-6). The correction frame (5-5) has an end bearing (5-52) on the inner side of the hinge seat (5-51) and an intermediate bearing (5-53) in the middle. The two correction flat rollers (5-7) used to support the return belt (1) are installed on the end bearing (5-52) and the intermediate bearing (5-53) respectively and can rotate freely. The braking assembly includes a brake seat (5-3) and a damping block (5-4). The brake seat (5-3) is connected to the hinge seat (5-51) on the correction frame (5-5) via a horizontal pin (5-9) and can swing along the axis of the horizontal pin (5-9). The inner side of the brake seat (5-3) extends to the corresponding correction roller (5-7). The damping block (5-4) is installed on the brake seat (5-3) and is used to brake the respective rotating correction roller (5-7). The side roller (5-1) is vertically installed on its respective brake seat (5-3) and can rotate freely. The side roller (5-1) is used to limit the end face of the belt (1).

2. The automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The upper roller assembly (2) also has an upper roller bracket (2-1), which has two outer roller supports (2-5) for supporting the inclined roller (2-4) and two inner roller supports (2-3) for supporting the inclined roller (2-4) and the intermediate flat roller (2-2). The two ends of the intermediate flat roller (2-2) are rotatably mounted on the inner roller supports (2-3), and the two ends of the inclined roller (2-4) are rotatably mounted on the outer roller supports (2-5) and the inner roller supports (2-3). The upper roller bracket (2-1) is mounted on two main crossbeams (3-1).

3. The automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The main crossbeam (3-1) is equipped with a motor shock absorber (11) on the outer front side, and a motor (10) with a reducer is installed on the motor shock absorber (11). The lower part of the two main crossbeams (3-1) is equipped with a first cleaning mechanism (14) for cleaning the belt at the drive roller (12) and a second cleaning mechanism (15) for cleaning the front return belt.

4. The automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The main crossbeam (3-1) is equipped with a belt tensioning mechanism (13) at the rear. The belt tensioning mechanism (13) includes a guide, an adjusting fixed seat (13-1), and a tension adjusting component (13-2). The guide is matched with the guide rail on the main crossbeam (3-1) and connected to the bearing seat of the driven roller (16). The adjusting fixed seat (13-1) is installed on the main crossbeam (3-1). The tension adjusting component (13-2) installed on the adjusting fixed seat (13-1) is connected to the bearing seat of the driven roller (16). The locking component is installed on the tension adjusting component (13-2). The bearing seat of the driven roller (16) is equipped with a third cleaning mechanism that moves laterally synchronously with the driven roller (16). The two cleaning components of the third cleaning mechanism are respectively located on the inner side and the outer side of the belt.

5. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The upper inner side of the guide trough bracket (8) is provided with at least one support slot (8-2). The positioning block on the guide trough plate (6) is set in the corresponding support slot (8-2). The folded edge of the upper part of the guide trough plate (6) is installed on the guide trough bracket (8) by fasteners. The upper part of the guide trough bracket (8) is also provided with a hanging shaft (8-1). The hanging shaft (8-1) is installed on the upper part of the outer cover (9). The lower part of the cover (9) is installed on the lower part of the guide trough bracket (8) by a pressing plate. The two main crossbeams (3-1) are equipped with baffles (7) at the rear.

6. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The main crossbeam (3-1) includes three assembled crossbeams: a front crossbeam, a middle crossbeam, and a rear crossbeam. The connecting frame (3-2) includes two longitudinal beams and an intersecting diagonal beam fixed on the two longitudinal beams. The two longitudinal beams are installed on the corresponding crossbeams. The main beam connecting seats at the ends of adjacent crossbeams are fixedly connected by fasteners. An automatic correction mechanism (5) is installed on the inner side of the end buffer roller (4) of the front crossbeam and the rear crossbeam.

7. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The brake seat (5-3) includes an integral support seat (5-31) and a damping seat (5-32). The support seat (5-31) includes a portal-shaped seat with an opening at the bottom. The portal-shaped seat is located outside the hinge seat (5-51) of the correction frame (5-5). The horizontal pin (5-9) is a T-shaped pin. The T-shaped pin passes through the portal-shaped seat and the hinge seat (5-51). The shaft is mounted on the T-shaped pin with an elastic pin. The damping seat (5-32) includes side plates located on both sides of the correction frame (5-5) and mounting plates on the top of the side plates. The portal-shaped seat is connected to the side plates. The mounting plates are located on the upper part of the correction frame (5-5). The damping block (5-4) is mounted on the mounting plate and can be removed.

8. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: A wear-resistant washer (5-8) is provided between the correction fixing frame (5-2) and the correction frame body (5-5). The central vertical pin (5-6) passes through the correction fixing frame (5-2), the wear-resistant washer (5-8), and the correction frame body (5-5). The upper part of the central vertical pin (5-6) is connected to the correction frame body (5-5) through an elastic retaining ring. A nut is installed on the central vertical pin (5-6) and connected to the correction fixing frame (5-2). The central vertical pin (5-6) is also provided with a communicating axial oil passage and a radial oil passage. The outer end of the axial oil passage of the central vertical pin (5-6) is connected to the oil filler nozzle, and the outlet of the radial oil passage corresponds to the wear-resistant washer (5-8).

9. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The straightening flat roller (5-7) includes a flat roller and end shafts at both ends. The flat roller is rotatably connected to the end shafts, and the end shafts are provided with corresponding mounting planes. The mounting planes of the end shafts are engaged in the slots of the end shaft seats (5-52) and the slots of the intermediate shaft seats (5-53).

10. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The side roller (5-1) includes a side roller and a side shaft. The side roller and the side shaft are rotatably connected. The side shaft is provided with a threaded section. The side shaft passes through the mounting hole on the support seat (5-31). The upper and lower sides of the side shaft are respectively fixed to the support seat (5-31) by locking nuts.

11. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: The center plane of the correction fixing frame (5-2) is provided with at least one limiting post (5-10) to limit the swing angle of the correction frame body (5-5). The limiting post (5-10) corresponds to the stop of the correction frame body (5-5). The distance between the center plane of the limiting post (5-10) and the axis of the central vertical pin (5-6) is greater than or equal to the distance between the center plane of the flat roller and the axis of the central vertical pin (5-6).

12. An automatic belt conveyor for correcting belt alignment according to claim 1, characterized in that: A limiting block (5-11) is provided at the bottom of the brake seat (5-3) and / or the upper part of the correction frame (5-5). The end face of the limiting block (5-11) does not contact the correction frame (5-5) and the brake seat (5-3).

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