Anti-ribbon-floating device of discharging car

Abstract

The utility model relates to an anti-ribbon-floating device of a discharging car, which comprises a frame body, a connecting plate beam, a lifting mechanism and a bearing mechanism, and the frame body is fixed with a discharging port of the discharging car; the end, close to the pinch roller, of the connecting plate beam is rotationally connected with the frame body, and the end, away from the frame body, of the connecting plate beam is connected with the lifting mechanism for lifting. The bearing mechanism comprises a carrier roller set for bearing the adhesive tape, and the carrier roller set is installed on the connecting plate beam. The belt floating problem caused by no-load or low-load carrying of the discharging car is well solved, and the problems of rubber belt deviation, material leakage and the like caused by the belt floating phenomenon are effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of unloading vehicle technology, and in particular to an anti-drifting device for unloading vehicles. Background Technology

[0002] As a crucial auxiliary device for belt conveyors, the unloading car plays an indispensable role in many industrial settings, especially in places with frequent material transfers such as power plant silos and storage yards. In the conventional operation of the unloading car, the conveyor belt needs to transition from the belt conveyor to the unloading car, creating a drop. This drop typically ranges from three to five meters. Under the influence of this drop, the conveyor belt, along with the continuous operation of the conveyor, will exhibit up-and-down vibration, a phenomenon known as belt slippage.

[0003] To address the issue of conveyor belt slippage, traditional unloading systems are equipped with a frame featuring pressure rollers to limit irregular belt displacement, thereby mitigating belt vibration and achieving relatively stable operation. However, in reality, the conveyor belt only stabilizes under the continuous pressure of the material's gravity when the unloading vehicle is gradually loaded with sufficient material, thus ensuring stable operation of the unloading vehicle.

[0004] In related technologies, when the unloading vehicle is empty or under low load, the conveyor belt lacks sufficient gravity to compress the material due to the absence or scarcity of material. This leads to severe belt slippage, causing problems such as material leakage and belt misalignment. It can also damage the equipment, significantly shorten its service life, and increase maintenance costs, greatly affecting the actual operating performance of the unloading vehicle. Utility Model Content

[0005] To address the issue of conveyor belt drifting during unloading operations with empty or low-load conditions, which can lead to material leakage and belt misalignment, this application provides a conveyor belt drift prevention device for unloading vehicles.

[0006] This application provides a device for preventing the drifting of a material unloading vehicle's conveyor belt, which adopts the following technical solution:

[0007] A device for preventing belt drift in an unloading vehicle includes a frame, a connecting beam, a lifting mechanism, and a load-bearing mechanism. The frame is fixed to the discharge port of the unloading vehicle. The end of the connecting beam near the pressure roller is rotatably connected to the frame, and the end of the connecting beam away from the frame is connected to the lifting mechanism for lifting and lowering. The load-bearing mechanism includes a set of idlers supporting the belt, and the idlers are mounted on the connecting beam.

[0008] By adopting the above technical solution, when the unloading vehicle is empty or under low load, the conveyor belt is in a higher position, the connecting plate beam is rotatably connected to the frame, and the lifting mechanism controls one end of the connecting plate beam to rise, so that the roller group on the connecting plate beam supports the conveyor belt. The friction between the roller group and the conveyor belt restricts the movement of the conveyor belt, effectively preventing the conveyor belt from swaying left and right and causing the belt to sway.

[0009] Preferably, the lifting mechanism includes a drum motor, a pulley, and a wire rope; the drum motor is fixedly installed on the upper end of the frame, the pulley is rotatably installed on the top of the frame, and the pulley is provided with a rope groove; one end of the wire rope is connected to the end of the connecting plate beam away from the frame, and the other end of the wire rope passes through the pulley groove and is fixed to the winding shaft of the drum motor.

[0010] By adopting the above technical solution, the operation of the drum motor pulls the steel wire rope to lift one end of the connecting plate beam, and the pulley changes the direction of the pulling force of the drum motor, making it easy to install the drum motor on the frame.

[0011] Preferably, the idler roller assembly includes an idler roller limiting plate, an inclined roller frame, and inclined idler rollers; the inclined idler rollers are mounted on the inclined roller frame, and at least two sets of inclined idler rollers and inclined roller frames are provided and symmetrically arranged; the idler roller limiting plate is fixed on the connecting plate beam, and two idler roller limiting plates are provided and located on both sides of the inclined roller frame respectively; the end of the inclined roller frame away from the adjacent idler roller limiting plate is rotatably mounted on the connecting plate beam, and the end of the inclined roller frame near the idler roller limiting plate is detachably fixed to the idler roller limiting plate; the idler roller limiting plate is provided with a plurality of mounting holes along the height direction for fixing the inclined roller frame.

[0012] By adopting the above technical solution, one end of the inclined roller frame is rotatably mounted on the connecting plate beam, and the other end of the inclined roller frame is detachably mounted on the mounting hole of the idler roller limit plate. By mounting on mounting holes at different heights, the inclination angle of the inclined idler roller can be adjusted to suit different transportation conditions, thereby improving the applicability of the inclined idler roller. When transporting goods on the conveyor belt, the conveyor belt will be trapped in the V-shaped structure formed by the two inclined idler rollers. This combination method further restricts the left and right swaying of the conveyor belt and the resulting ribbon swaying phenomenon.

[0013] Preferably, the inclined roller frame and the connecting plate beam are rotatably connected by bolt shafts, and the mounting holes on the inclined roller frame corresponding to the bolt shafts are set as arc-shaped elongated holes; the mounting holes on the idler roller limiting plate are arranged in an arc shape from top to bottom; the edge of the idler roller limiting plate is arranged in an arc shape corresponding to the mounting holes.

[0014] By adopting the above technical solution, after loosening the bolt shaft, the relative position of the bolt shaft and the oblong hole can be adjusted. This setting allows for adjustment of the lateral position of the slanted roller frame while simultaneously adjusting its installation angle. This lateral position adjustment reduces the increase in the gap between the two slanted rollers caused by the rotation of the slanted roller frame, ensuring stable support of the conveyor belt by the slanted rollers. The lateral movement of the roller frame reduces the space required for the slanted roller frame during rotation adjustment, which helps to reduce the size of the equipment and lower costs. The arc-shaped arrangement of the mounting holes corresponds to the rotation trajectory of the roller frame during adjustment, facilitating the installation of the slanted roller frame. The arc-shaped design of the edge of the roller limit plate corresponds to the outline of the mounting hole arrangement, reducing material usage and saving manufacturing costs.

[0015] Preferably, a bearing shaft is rotatably mounted on the connecting plate beam, a high-torque motor is mounted at one end of the bearing shaft, the output shaft of the high-torque motor is connected to the bearing shaft, the idler roller limit plate is fixedly mounted on the bearing shaft and rotates with the bearing shaft, and the inclined roller frame is fixedly mounted on the bearing shaft by bolts and also rotates with the bearing shaft.

[0016] By adopting the above technical solution, when the unloading vehicle is moving, the high-torque motor works to rotate the idler roller group through the bearing shaft. The idler roller group rotates to a position parallel to the connecting plate beam to prevent the idler roller group from interfering with other devices when the unloading vehicle moves. After the unloading vehicle moves to the working position, the high-torque motor works again to rotate the idler roller group to the specified height.

[0017] Preferably, a tape limiter is fixedly installed on the roller limiting plate. The tape limiter includes a sliding plate, an adjusting plate, and a pressure roller. The sliding plate is fixed to the top of the roller limiting plate. One end of the adjusting plate is fixed to the sliding plate with bolts. The pressure roller is rotatably installed on the other end of the adjusting plate away from the sliding plate. The pressure roller cooperates with the inclined roller to clamp the tape. The sliding plate is provided with elongated sliding holes along the width direction of the connecting plate beam. The bolts connecting the adjusting plate and the sliding plate pass through the sliding holes.

[0018] By adopting the above technical solution, the pressure roller and the inclined roller cooperate to clamp the two edges of the tape, further increasing the friction force on the tape, preventing the tape from swaying left and right, and also effectively preventing the tape from shaking up and down, thus effectively suppressing the phenomenon of tape drifting; since the installation angle of the inclined roller can be adjusted, the distance between the pressure roller and the inclined roller can be adjusted by sliding the adjustment plate, thereby ensuring that the pressure roller can cooperate with the inclined roller to clamp and fix the two edges of the tape.

[0019] Preferably, when the unloading vehicle is in operation, the inclined roller frame is tilted in the direction of belt feeding.

[0020] By adopting the above technical solution, the tilting of the inclined roller frame helps the inclined roller to better fit with the tape, and can more stably support the tape.

[0021] Preferably, the idler assembly further includes a horizontal idler and a horizontal roller frame, wherein the horizontal idler is rotatably mounted on the horizontal roller frame, the horizontal roller frame is fixed on the bearing shaft, and the horizontal roller frame is inclined toward the material feeding direction of the conveyor belt.

[0022] By adopting the above technical solution, the horizontal idler roller can stably support the conveyor belt and limit the left and right swaying of the conveyor belt, thus preventing the belt from swaying and causing it to sway.

[0023] Preferably, the bearing mechanism further includes a brake, which is installed at the end of the bearing shaft away from the high-torque motor; a first position sensor for detecting the vertical position of the idler roller limit frame and a second position sensor for detecting the horizontal position of the idler roller limit frame are fixedly installed on the connecting plate beam, and two of each of the first and second position sensors are provided and are respectively located at both ends of the bearing shaft.

[0024] By adopting the above technical solution, after the first position sensor detects that the idler roller limit plate has rotated to the designated position, the high-torque motor stops working, and the brake starts working to fix the bearing shaft, thereby fixing the idler roller group and preventing the idler roller group from shaking due to the weight of the material on the conveyor belt, which could lead to material leakage or conveyor belt deviation. When the idler roller group is retracted, the brake stops working, the high-torque motor drives the bearing shaft to rotate, and after the second position sensor detects that the idler roller limit plate has rotated to a position parallel to the connecting beam, the high-torque motor stops working, and the brake starts working to fix the bearing shaft.

[0025] Preferably, the idler roller group is provided in multiple groups and is evenly spaced on the connecting plate beam, and the bearing shaft is provided in multiple groups of idler roller groups; the idler roller group is provided with a connecting plate on the side, the connecting plate is rotatably connected to each idler roller limit plate, and one high torque motor and one brake are provided, the high torque motor and the brake are mounted on one bearing shaft.

[0026] By adopting the above technical solution, the setting of multiple idler groups, multiple bearing shafts and multiple belt limiters is beneficial to more stable support of the belt; the connecting plate connects each idler group so that multiple idler groups form a linkage whole, and only one high torque motor, one brake, two first position sensors and two second position sensors are needed to complete the height position adjustment of all idler groups, which greatly saves manufacturing costs.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When the unloading vehicle is working under no-load or low-load conditions, the conveyor belt is in a high position. The lifting mechanism lifts the connecting beam, and the roller group on the connecting beam supports the conveyor belt, which effectively prevents the conveyor belt from swaying left and right and causing the belt to sway.

[0029] 2. One end of the inclined roller frame is rotatably mounted on the connecting plate beam, and the other end of the inclined roller frame is detachably mounted on the mounting hole on the idler roller limit plate. By mounting on mounting holes at different heights, the inclination angle of the inclined idler roller can be adjusted to suit different transportation conditions, thus improving the applicability of the inclined idler roller. When transporting items on the conveyor belt, the conveyor belt will be trapped in the V-shaped structure formed by the two inclined idler rollers. This combination further restricts the left and right swaying of the conveyor belt and prevents the belt from swaying.

[0030] 3. It is equipped with multiple sets of idler rollers, as well as multiple bearing shafts and multiple belt limiters corresponding to the multiple sets of idler rollers, which helps to support the belt more stably;

[0031] 4. Each idler roller group has a connecting plate rotatably connected to its roller limit plate. The idler roller groups are connected to each other to form a linkage whole through the connecting plate. At this time, only one high torque motor, one brake, two first position sensors and two second position sensors are needed to complete the rotation of the entire linkage whole, which greatly saves manufacturing costs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of the structure of the bearing mechanism in the embodiments of this application;

[0034] Figure 3 This is a schematic diagram of the overall structure of the idler roller assembly when it is retracted in the embodiment of this application.

[0035] Reference numerals: 1. Frame; 101. Pressure roller; 2. Lifting mechanism; 21. Drum motor; 22. Pulley; 23. Wire rope; 3. Bearing mechanism; 31. Idler roller group; 311. Idler roller limit plate; 312. Inclined idler roller; 313. Inclined roller frame; 314. Horizontal idler roller; 315. Horizontal roller frame; 32. High torque motor; 33. Brake; 34. Belt limiter; 341. Sliding plate; 342. Adjusting plate; 343. Pressure roller; 4. Connecting beam; 5. Rotating shaft; 6. Connecting plate; 7. Bearing shaft; 8. First position sensor; 9. Second position sensor; 10. Belt; 11. Unloading trolley moving track; 12. Unloading trolley discharge port. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0037] This application discloses a device for preventing the unloading vehicle's strip from drifting.

[0038] refer to Figure 1A device for preventing conveyor belt swaying in an unloading vehicle includes a frame 1, a lifting mechanism 2, a bearing mechanism 3, and a connecting beam 4. One end of the connecting beam 4 is rotatably connected to the frame 1 via a rotating shaft 5, which is a horizontal rotating shaft perpendicular to the feeding direction. A bearing shaft 7 for driving the bearing mechanism 3 is rotatably mounted on the connecting beam 4. Bearing seats are installed at both ends of the bearing shaft 7 and are fixed on the connecting beam 4. The bearing shaft 7 is perpendicular to the feeding direction. The lifting mechanism 2 is used to adjust the height of the end of the connecting beam 4 away from the frame 1. The bearing mechanism 3 is installed on the connecting beam 4 to support the conveyor belt 10. When the unloading vehicle is running unloaded or under low load, the conveyor belt 10 is in a higher position. The lifting mechanism 2 lifts one end of the connecting beam 4, causing the conveyor belt 10 to come into contact with the bearing mechanism 3. This helps the bearing mechanism 3 limit the vertical shaking and horizontal swaying of the conveyor belt 10, effectively preventing the conveyor belt from swaying.

[0039] refer to Figure 1 In this embodiment, the frame 1 is a frame that is attached to the discharge port 12 of the unloading vehicle. The frame 1 is a gate-shaped frame that spans above the conveyor belt 10. A pressure roller 101 is rotatably installed on the frame 1.

[0040] The lifting mechanism 2 includes a drum motor 21, a pulley 22, and a wire rope 23. The drum motor 21 is bolted to the upper end of the frame 1. The pulley 22 is rotatably mounted on the top of the frame 1 and has a rope groove. One end of the wire rope 23 is fixedly connected to the end of the connecting beam 4 away from the frame 1. The other end of the wire rope 23 passes through the groove of the pulley 22 and is fixed to the shaft of the drum motor 21. The wire rope 23 rests on the pulley 22. The drum motor 21 adjusts the height position of the end of the connecting beam 4 away from the frame 1 by winding and unwinding the wire rope 23, so that the bearing mechanism 3 can support the conveyor belt 10, thereby adapting to different load conditions of the unloading vehicle and the different heights of the conveyor belt 10.

[0041] refer to Figure 1 The supporting mechanism 3 includes roller groups 31, which are fixedly mounted on the supporting shaft 7. Multiple roller groups 31 are evenly spaced along the length of the connecting beam 4. The supporting shaft 7 also has multiple roller groups 31 corresponding to each roller group 31 for driving the roller groups 31 to rotate. Connecting plates 6 are provided on the sides of each roller group 31, and are rotatably mounted on each roller limiting plate 311. The connecting plates 6 connect multiple roller groups 31 into a single linked unit. In this embodiment, there are five roller groups 31 in total.

[0042] refer to Figure 2 The idler roller assembly 31 includes an idler roller limiting plate 311, an inclined idler roller 312, an inclined roller frame 313, a horizontal idler roller 314, and a horizontal roller frame 315.

[0043] The idler roller limiting plate 311 has two bearing shafts 7 fixedly mounted on the two ends of the connecting plate beam 4, which rotate with the bearing shafts 7. Two inclined idler rollers 312 are provided and located between the two idler roller limiting plates 311. The side edge of the idler roller limiting plate 311 near the inclined idler roller 312 has mounting holes. The mounting holes are arc-shaped from top to bottom, and the outline of the mounting holes on the edge of the idler roller limiting plate 311 is arc-shaped.

[0044] The inclined roller 312 is rotatably mounted on the inclined roller frame 313. One end of the inclined roller frame 313 is fixedly mounted on the roller limiting plate 311 via a bolt through a mounting hole. The other end of the inclined roller frame 313, away from the roller limiting plate 311, is rotatably mounted on the bearing shaft 7 via a bolt shaft. The inclined roller frame 313 rotates with the bearing shaft 7. The mounting hole on the inclined roller frame 313 corresponding to the bolt shaft is set as an arc-shaped elongated hole. The installation angle of the inclined roller 312 is adjusted by adjusting the position of the bolt mounted on the roller limiting plate 311 and the relative position of the bolt shaft and the arc-shaped elongated hole.

[0045] A horizontal idler roller 314 is disposed between two inclined idler rollers 312, and the two inclined idler rollers 312 are symmetrically arranged about the horizontal idler roller 314; the horizontal idler roller 314 is rotatably mounted on a horizontal roller frame 315, and the horizontal roller is fixed on a bearing shaft 7 and rotates with the bearing shaft 7.

[0046] The carrying mechanism 3 also includes a belt limiter 34 that cooperates with the idler roller assembly 31 to clamp the conveyor belt 10. The belt limiter 34 includes a sliding plate 341, an adjusting plate 342, and a pressure roller 343. The sliding plate 341 is horizontally mounted on top of the idler roller limiter 311. The sliding plate 341 has elongated sliding holes, with two parallel sliding holes arranged vertically. One end of the adjusting plate 342 is fixedly mounted on the sliding plate 341 by two bolts fasteners passing through the two sliding holes. The pressure roller 343 is rotatably mounted on the end of the adjusting plate 342 near the inclined idler roller 312. The rotation axis 5 of the pressure roller 343 is perpendicular to the feeding direction, and the pressure roller 343 and the conveyor belt 10 are subject to rolling friction. The position of the adjusting plate 342 is adjusted by changing the fixing position of the bolts to adjust the distance between the pressure roller 343 and the inclined idler roller 312, so as to adapt to the different positions of the conveyor belt 10 and the inclined idler roller 312 under different loads of the unloading vehicle.

[0047] When the unloading vehicle transports materials, the pressure roller 343, together with the inclined idler roller 312, clamps the conveyor belt 10. The edge of the conveyor belt 10 is clamped by the pressure roller 343 and the inclined idler roller 312, which increases the friction force on the conveyor belt 10 and effectively suppresses the left and right swaying and up and down shaking of the conveyor belt 10, preventing the occurrence of the belt slippage phenomenon. When the unloading vehicle moves, the conveyor belt limiter 34 also rotates together with the idler roller limiter plate 311.

[0048] refer to Figure 1 and Figure 2A high-torque motor 32 for driving the bearing shaft 7 to rotate is installed at one end of the bearing shaft 7, and a brake 33 for fixing the bearing shaft 7 is installed at the end of the bearing shaft 7 away from the high-torque motor 32; a first position sensor 8 is provided on the connecting plate beam 4, and two first position sensors 8 are provided and are respectively fixedly installed on the bearing seats at both ends of the bearing shaft 7; a second position sensor 9 is also provided on the connecting plate beam 4, and two second position sensors 9 are also provided and are respectively fixedly installed on both sides of the connecting plate beam 4.

[0049] When the unloading vehicle starts working, the high-torque motor 32 starts, and the bearing shaft 7 rotates, driving one of the idler roller groups 31 to rotate. Through the connecting plate 6, the linkage of multiple idler roller groups 31 rotates to the designated height position. After the first position sensor 8 senses the idler roller limit plate 311, the high-torque motor 32 stops running to avoid excessive load on the subsequent idler roller groups 31, which could damage the high-torque motor 32. At the same time, the first position sensor 8 outputs an electrical signal to the brake 33, which stops the bearing shaft 7 from rotating and fixes it so that it no longer rotates, preventing the idler roller groups 31 from shifting due to the load when the unloading vehicle is transporting materials.

[0050] refer to Figure 2 and Figure 3 When the unloading vehicle needs to move to another working position, the high torque motor 32 starts, and the bearing shaft 7 rotates to drive one of the idler roller groups 31 to rotate. Through the connecting plate 6, the linkage of multiple idler roller groups 31 rotates to a position parallel to the connecting plate beam 4. After the second position sensor 9 senses the idler roller limit plate 311, the high torque motor 32 stops running, achieving the effect of retracting the idler roller group 31 and preventing the idler roller group 31 from interfering with other devices during the movement of the unloading vehicle.

[0051] refer to Figure 1 When the unloading car is working, the inclined roller 312 of the roller group 31 is set at an appropriate angle toward the feeding direction of the conveyor belt 10. At this time, the angle between the roller limit plate 311 and the inclined roller 312 and the feeding direction of the conveyor belt 10 is 90°, and the horizontal roller 314 is inclined toward the material receiving direction of the conveyor belt 10.

[0052] The implementation principle of this application embodiment is as follows:

[0053] When the unloading vehicle is running unloaded or under low load, the conveyor belt 10 is in a higher position. The drum motor 21 is started, and the connecting plate beam 4 is lifted by the wire rope 23 and pulley 22, so that the idler roller group 31 supports the conveyor belt 10. In this way, the movement of the conveyor belt 10 can be effectively restricted by friction, preventing the phenomenon of belt slippage. Then, the sliding plate 341 is slid to adjust the pressure roller 343 to a suitable position. At this time, the edge of the conveyor belt 10 is clamped by the pressure roller 343 and the inclined idler roller 312, which increases the friction force on the edge of the conveyor belt 10, further preventing the conveyor belt 10 from swaying left and right and shaking up and down, preventing the phenomenon of belt slippage, thereby reducing material leakage, conveyor belt 10 deviation and other problems, reducing the risk of equipment damage, improving the service life of the equipment and reducing operation and maintenance costs. Similarly, when the unloading truck is fully loaded, the load is large, and the conveyor belt 10 will be in a lower position. The drum motor 21 is started, and the connecting beam 4 is lowered via the wire rope 23 and pulley 22. The lifting end of the connecting beam 4 rests on the unloading truck's moving track 11. The supporting force applied by the moving track 11 ensures the stability of the connecting beam 4 and the stable transportation of materials. Before the unloading truck moves to a new position, the connecting beam 4 is raised by the wire rope 23, pulley 22, and drum motor 21. At the same time, the high-torque motor 32 retracts multiple sets of idler rollers 31 to prevent them from interfering with other equipment, thus facilitating the movement of the unloading truck.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for preventing the drifting of a discharge car, characterized in that, The device includes a frame (1), a connecting beam (4), a lifting mechanism (2), and a bearing mechanism (3). The frame (1) is fixed to the discharge port (12) of the unloading vehicle. One end of the connecting beam (4) is rotatably connected to the frame (1), and the end of the connecting beam (4) away from the frame (1) is raised and lowered under the drive of the lifting mechanism (2). The bearing mechanism (3) includes a roller group (31) that supports the conveyor belt (10), and the roller group (31) is installed on the connecting beam (4).

2. The anti-belt-flying device of claim 1, wherein The lifting mechanism (2) includes a drum motor (21), a pulley (22) and a wire rope (23); the drum motor (21) is fixedly installed on the upper end of the frame (1), the pulley (22) is rotatably installed on the top of the frame (1), and the pulley (22) is provided with a rope groove; one end of the wire rope (23) is connected to the end of the connecting plate beam (4) away from the frame (1), and the other end of the wire rope (23) passes through the groove of the pulley (22) and is fixed to the winding shaft of the drum motor (21).

3. The anti-belt-flying device of claim 1, wherein The idler roller assembly (31) includes an idler roller limiting plate (311), an inclined roller frame (313), and an inclined idler roller (312). The inclined idler roller (312) is mounted on the inclined roller frame (313). At least two sets of inclined idler rollers (312) and inclined roller frames (313) are provided and symmetrically arranged. The idler roller limiting plate (311) is fixed on the connecting plate beam (4). There are two idler roller limiting plates (311) and they are located on both sides of the inclined roller frame (313). The end of the inclined roller frame (313) away from the adjacent idler roller limiting plate (311) is rotatably mounted on the connecting plate beam (4). The end of the inclined roller frame (313) close to the idler roller limiting plate (311) is detachably fixed to the idler roller limiting plate (311). The idler roller limiting plate (311) has multiple mounting holes along the height direction for fixing the inclined roller frame (313).

4. The anti-belt-flying device of claim 3, wherein The inclined roller frame (313) and the connecting plate beam (4) are rotatably connected by bolt shafts. The mounting holes on the inclined roller frame (313) corresponding to the bolt shafts are set as arc-shaped elongated holes. The mounting holes on the idler roller limiting plate (311) are arranged in an arc shape from top to bottom. The edge of the idler roller limiting plate (311) is arranged in an arc shape corresponding to the mounting holes.

5. The anti-belt-flying device of claim 4, wherein A bearing shaft (7) is rotatably mounted on the connecting plate beam (4). A high-torque motor (32) is mounted on one end of the bearing shaft (7). The output shaft of the high-torque motor (32) is connected to the bearing shaft (7). The idler roller limit plate (311) is fixedly mounted on the bearing shaft (7) and rotates with the bearing shaft (7). The inclined roller frame (313) is fixedly mounted on the bearing shaft (7) by bolts and also rotates with the bearing shaft (7).

6. The anti-belt-flying device of claim 3, wherein A tape limiter (34) is fixedly installed on the roller limiting plate (311). The tape limiter (34) includes a sliding plate (341), an adjusting plate (342), and a pressure roller (343). The sliding plate (341) is fixed on the top of the roller limiting plate (311). One end of the adjusting plate (342) is fixed to the sliding plate (341) with bolts. The pressure roller (343) is rotatably installed on the other end of the adjusting plate (342) away from the sliding plate (341). The pressure roller (343) cooperates with the inclined roller (312) to clamp the tape (10). A long strip-shaped sliding hole is provided on the sliding plate (341) along the width direction of the connecting plate beam (4). The bolts connecting the adjusting plate (342) and the sliding plate (341) are inserted into the sliding hole.

7. The anti-belt-flying device of claim 5, wherein When the unloading vehicle is in operation, the inclined roller frame is tilted in the direction of the conveyor belt feeding.

8. The anti-belt-flying device of claim 7, wherein, The idler roller assembly (31) also includes a horizontal idler roller (314) and a horizontal roller frame (315). The horizontal idler roller (314) is rotatably mounted on the horizontal roller frame (315), and the horizontal roller frame (315) is fixed on the bearing shaft (7). The horizontal roller frame (315) is inclined toward the material feeding direction of the conveyor belt (10).

9. A device for preventing the conveyor belt from drifting off a unloading vehicle according to claim 5, characterized in that, A brake (33) is installed at the end of the bearing shaft (7) away from the high torque motor (32); a first position sensor (8) for detecting the vertical position of the roller limit frame and a second position sensor (9) for detecting the horizontal position of the roller limit frame are fixedly installed on the connecting plate beam (4). Two of the first position sensor (8) and the second position sensor (9) are provided and are respectively located at both ends of the bearing shaft (7).

10. The anti-belt-flying device for a dump car of claim 5, wherein, The idler roller group (31) is provided in multiple groups and is evenly spaced on the connecting plate beam (4). The bearing shaft (7) is provided with multiple idler roller groups (31). The idler roller group (31) is provided with a connecting plate (6) on its side. The connecting plate (6) is rotatably connected to each idler roller limiting plate (311). The high torque motor (32) and the brake (33) are each provided. The high torque motor (32) and the brake (33) are mounted on a bearing shaft (7).

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