Anti-rolling device for belt conveyor and belt conveyor

Abstract

The invention relates to a material rolling prevention device for a belt conveyor and the belt conveyor. The material rolling prevention device comprises a supporting frame arranged on a rack, a buffer belt arranged above a conveying belt in the extending direction of the conveying belt, a fixing frame connected with one end of the buffer belt and a material pressing mechanism. The material pressing mechanism comprises a material pressing disc connected with the other end of the buffering belt and an adjusting unit arranged between the material pressing disc and the supporting frame, and the adjusting unit is used for adjusting the pressure applied to materials on the conveying belt by the material pressing disc. According to the material rolling prevention device, pressure is applied to materials on the conveying belt through the material pressing mechanism to stabilize the materials, the tumbling probability of large materials is greatly reduced, the risks of material tumbling and the like of the dip angle belt conveyor are effectively prevented, material impact can be relieved through the buffer belt after the materials tumbling situation occurs, and the service life of the dip angle belt conveyor is prolonged. And the danger to human bodies and production safety caused by material tumbling is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mining conveying equipment, and in particular to an anti-rolling device for a belt conveyor and the belt conveyor. Background Art

[0002] During the operation of a high-angle belt conveyor, the material is subjected to a downward force in the same or opposite direction of the conveyor belt due to the gravity component. When the starting acceleration is too large, emergency stop or the local inclination is too large, resulting in the downward force being greater than the friction resistance, the material will slide or roll down. In particular, large-sized materials are very likely to roll down faster and faster due to inertia, and even fall out of the conveyor belt surface, posing a personal threat to surrounding maintenance and repair personnel.

[0003] Some have proposed adding an auxiliary belt above the material layer, connected end to end, with the lower half of the belt drooping under the weight. This belt moves synchronously with the conveyor belt as it moves, trapping the material between the belt and the auxiliary belt. However, in actual operation, this method has little effect on preventing material rollover. Summary of the Invention

[0004] In view of this, the present invention provides an anti-rolling device for a belt conveyor and a belt conveyor, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] In order to achieve the above-mentioned object, the first aspect of the present invention provides an anti-rolling device for a belt conveyor, comprising: A material rolling prevention device for a belt conveyor, the belt conveyor comprising a frame and a conveyor belt, the material rolling prevention device comprising: A support frame, the support frame being arranged on the frame; a buffer belt, the buffer belt being arranged along the extension direction of the conveyor belt and being located above the conveyor belt; a fixing frame, the fixing frame being arranged on the supporting frame and connected to one end of the buffer belt; The material pressing mechanism includes a material pressing plate connected to the other end of the buffer belt and an adjustment unit arranged between the material pressing plate and the support frame, and the adjustment unit is used to adjust the pressure applied by the material pressing plate to the material on the conveyor belt.

[0006] In the aforementioned anti-rolling device for the belt conveyor, optionally, the adjusting unit includes a connecting seat located above the pressure plate, an elastic member connected between the connecting seat and the pressure plate, a connecting rod assembly, and a connecting rope connected between the support frame and the pressure plate. The connecting rod assembly is used to drive the connecting seat to move in the up and down directions, thereby adjusting the expansion and contraction amount of the elastic member, thereby adjusting the pressure applied by the pressure plate on the material.

[0007] In the aforementioned anti-rolling device for the belt conveyor, optionally, the connecting rod assembly includes a first connecting rod and a second connecting rod arranged crosswise with the first connecting rod, one end of the first connecting rod and one end of the second connecting rod are respectively pivotally connected to the connecting seat, the other end of the first connecting rod is pivotally connected to the first slider, and the other end of the second connecting rod is pivotally connected to the second slider, the first slider and the second slider are respectively slidably connected to the support frame in the horizontal direction, and the up and down movement of the connecting seat is adjusted by adjusting the first slider and the second slider to move closer to or away from each other.

[0008] In the aforementioned anti-rolling device for the belt conveyor, optionally, the adjustment unit also includes a screw extending along the sliding direction of the first slider or the second slider and arranged on the support frame, and the screw is a bidirectional screw or a forward and reverse thread screw, and the first slider and the second slider are respectively connected to the nuts on the screw, and the first slider and the second slider are driven to move closer to or away from each other through the movement of the screw.

[0009] Optionally, the anti-rolling device further includes a manual wheel fixedly arranged on one end of the lead screw.

[0010] Optionally, the anti-rolling device further includes a reduction motor connected to the other end of the lead screw and a control box arranged on the support frame and electrically connected to the reduction motor.

[0011] In the aforementioned anti-rolling device for the belt conveyor, optionally, the fixed frame includes a first fixed frame section extending along the width direction of the conveyor belt and a second fixed frame section formed by the two end portions of the first fixed frame section being bent laterally and extending downward, the buffer belt is connected to both the first fixed frame section and the second fixed frame section, and the height of the pressing plate is lower than the height of the first fixed frame section.

[0012] In the aforementioned anti-rolling device for a belt conveyor, optionally, the anti-rolling device further comprises a coal blocking mechanism provided on the support frame, the coal blocking mechanism comprising a coal blocking plate located above the conveyor belt and rotatable about a rotating shaft extending in a horizontal direction, and a blocking rod provided in front of the coal blocking plate, the blocking rod being used to limit the reverse deflection of the coal blocking plate due to collision with rolling materials; In the conveying direction of the conveyor belt, the blocking rod, the coal blocking plate, the pressing plate and the fixing frame are arranged in sequence.

[0013] Optionally, the anti-rolling device also includes a sensor arranged on the support frame and located in front of the coal baffle plate or a sensor arranged on the baffle rod. The sensor is electrically connected to the control box of the anti-rolling device, and is used to transmit the reverse deflection signal of the coal baffle plate to the control box, and then transmit it to the monitoring center of the belt conveyor through the control box.

[0014] Optionally, the coal blocking mechanism further includes a plurality of counterweight blocks detachably connected to the coal blocking plate.

[0015] Optionally, the monitoring center has an alarm, and after the reverse deflection signal of the sensor is transmitted to the monitoring center, the alarm can be triggered to sound an alarm.

[0016] Optionally, the lower end portion of the coal blocking plate is an arc-shaped end portion.

[0017] In order to achieve the aforementioned objectives, a second aspect of the present invention provides a belt conveyor comprising the aforementioned anti-rolling device.

[0018] The belt conveyor further comprises a plurality of roller groups arranged on the frame at intervals along the length direction of the frame, each of the roller groups has a concave surface, and the conveyor belt is arranged on the roller groups to form a concave conveying surface.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The anti-rolling device of the present invention applies pressure to the material on the conveyor belt through a pressing mechanism to stabilize the material, greatly reducing the probability of large pieces of material rolling down, and effectively preventing risks such as material rolling down on inclined belt conveyors. In addition, when material rolling occurs, the buffer belt can also slow down the impact of the material, greatly reducing the danger to personal safety and production safety caused by material rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The disclosure of the present invention will become more apparent with reference to the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an anti-rolling device for a belt conveyor according to one embodiment of the present invention; Figure 2 for Figure 1 A front view of the anti-rolling device; Figure 3 for Figure 1 Right side view of the anti-rolling device; Figure 4 for Figure 1 Left side view of the anti-rolling device; Figure 5This is a schematic diagram of a belt conveyor running in a high-angle section; In the picture: 1. Frame; 2. Conveyor belt; 3. Roller group; 4. Press plate; 5. Support frame; 6. Elastic part; 7. Manual wheel; 8. Connecting rope; 9. Control box; 10. Sensor; 11. Reducer motor; 12. Adjusting nut; 13. Coal baffle; 14. First slider; 15. Counterweight; 16. Screw; 17. Baffle rod; 18. Buffer belt; 19. Fixed frame; 20. First connecting rod; 21. Connecting seat; 22. Second connecting rod; 23. Second slider; 24. Rotating shaft. DETAILED DESCRIPTION

[0022] With reference to the accompanying drawings and specific embodiments, the structure, composition, characteristics and advantages of the anti-rolling device for a belt conveyor of the present invention will be described below in an exemplary manner. However, all descriptions should not be used to form any limitation on the present invention.

[0023] In addition, for any single technical feature described or implied in the embodiments submitted in this document, or any single technical feature shown or implied in the drawings, the present invention still operates in any combination or deletion between these technical features or their equivalents without any technical obstacles, and thus it should be considered that these more embodiments according to the present invention are also within the scope of the description in this document.

[0024] In this application, "front" refers to the incoming direction of the belt conveyor, and "back" refers to the unloading direction of the belt conveyor, as shown in Figure 5 .

[0025] In the case where the belt conveyor runs at a large inclination angle or the belt conveyor has a high speed, large acceleration during start-up and shutdown, or random large pieces of irregular-shaped materials, causing the material to roll or slide on the conveyor belt, the existing anti-rolling device has little effect on preventing the material from rolling.

[0026] This application redesigns the anti-rolling device for belt conveyors, which uses a pressing mechanism to apply pressure to the material on the conveyor belt to stabilize the material, prevent the material from slipping, reduce the probability of large pieces of material rolling down, and effectively prevent the risk of material rolling down on inclined belt conveyors. In addition, when material rolling occurs, the buffer belt can also slow down the impact of the material, greatly reducing the dangers to personal safety and production safety caused by material rolling.

[0027] Furthermore, the anti-rolling device of the embodiment of the present application can also provide an alarm prompt and upload the rolling situation to the monitoring center, truly making the source of danger discoverable, preventable, and eliminateable.

[0028] See also Figures 1 to 4The shown anti-rolling device for the belt conveyor, as shown in the figure, the belt conveyor comprises a frame 1, a plurality of roller groups 3 arranged on the frame 1 in the length direction of the frame 1 and a conveying belt 2, each roller group 3 has a concave surface, and the conveying belt 2 is arranged on the roller group 3 to form a concave conveying surface.

[0029] As Figure 3 and Figure 4 , each roller group 3 comprises a bottom roller arranged on the opposite sides of the frame 1 respectively and a side roller arranged on the opposite sides of the frame 1 respectively, the two side bottom rollers are arranged in cross, and the included angle between the axis of each side bottom roller and the horizontal plane is greater than 0° and less than 45°, each side roller is arranged in cross with the corresponding side bottom roller, and the included angle between each side roller and the horizontal plane is greater than 45° and less than 90°, so that the distance between the upper end portions of the two side rollers is greater than the distance between the lower end portions of the two side rollers.

[0030] The anti-rolling device comprises a support frame 5 arranged on the frame 1, and as Figure 1 shown in the figure, in some optional embodiments, the support frame 5 comprises a plurality of vertical columns arranged on the opposite sides of the frame 1 in the vertical direction, a support plate connected between the upper end portions of the plurality of vertical columns and a cross bar connected between adjacent two vertical columns, and the plurality of vertical columns are detachably connected with the frame 1 through bolts and nuts, facilitating the installation and disassembly of the anti-rolling device.

[0031] As shown in the figure, the anti-rolling device further comprises a buffer belt 18, a fixing frame 19 and a pressing mechanism, as Figure 1 and Figure 2 shown, the buffer belt 18 is arranged above the conveying belt 2 along the extension direction of the conveying belt 2, and the buffer belt 18 can be made of flame-retardant materials such as flame-retardant conveying adhesive tape or flame-retardant polyurethane whole-core belt.

[0032] In combination with Figure 1 and Figure 4 , the fixing frame 19 is fixedly arranged on the cross bar of the support frame 5, and the fixing frame 19 is connected with one end portion of the buffer belt 18. Alternatively, the fixing frame 19 comprises a fixing frame section arranged along the width direction of the conveying belt 2 and a fixing frame second section formed by bending the two end portions of the fixing frame section to the side and extending downward, and the distance between the lower end portions of the two side fixing frame second sections is greater than the distance between the upper end portions of the two side fixing frame second sections (i.e. the length of the fixing frame section), and the buffer belt 18 is connected with the fixing frame section and the fixing frame second section, so that the end portion of the buffer belt 18 connected with the fixing frame 19 and the conveying belt 2 can jointly form a first opening portion. In the conveying direction of the conveying belt 2, the fixing frame 19 is located behind the pressing mechanism, that is, the material on the conveying belt 2 first passes through the pressing mechanism to apply pressure, and then is output through the first opening portion.

[0033] In combination with Figure 1The material pressing mechanism includes a material pressing plate 4 connected to the other end of the buffer belt 18 and an adjustment unit provided between the material pressing plate 4 and the support frame 5. The adjustment unit is used to adjust the pressure applied by the material pressing plate 4 to the material on the conveyor belt 2 to stabilize the material on the conveyor belt 2. In actual working conditions, the number of roller groups below the material pressing plate 4 on the belt conveyor can be appropriately increased, or the rollers on the roller group below the material pressing plate 4 can be replaced with buffer rollers, or a buffer bed can be added between the conveyor belt and the roller group below the material pressing plate.

[0034] The height of the pressing plate 4 is lower than the height of a section of the fixed frame. The end of the buffer belt 18 connected to the pressing plate 4 can be enclosed with the conveyor belt 2 to form a second mouth. The size of the second mouth is smaller than the size of the first mouth, so that a necking design is formed between the buffer belt and the conveyor belt. When the belt conveyor is running at a large inclination angle or the belt conveyor has a high speed, a large start-up and shutdown acceleration, and random large pieces of special-shaped materials roll or slide on the conveyor belt, the material rolls through the first mouth to between the buffer belt and the conveyor belt, and the buffer belt 18 can effectively slow down the inertial impact of the rolling material.

[0035] Depend on Figure 1 and Figure 4 It can be seen that the adjusting unit includes a connecting seat 21 located above the pressing plate 4, an elastic member 6 connected between the connecting seat 21 and the pressing plate 4, a connecting rod assembly and a connecting rope 8 connected between the pressing plate 4 and the support frame 5. The elastic member 6 is a spring extending up and down, and the two ends of the spring are respectively connected to the connecting seat 21 and the pressing plate 4. The elastic member 6 is respectively arranged on the opposite sides of the pressing plate 4, such as on the left and right sides of the pressing plate 4, so that the force on the pressing plate 4 is more uniform.

[0036] The connecting rod assembly is used to drive the connecting seat 21 to move in the up and down directions, thereby adjusting the expansion and contraction amount of the elastic member 6, thereby adjusting the pressure applied to the material by the pressing plate 4. In an optional embodiment, the connecting rod assembly includes a first connecting rod 20 and a second connecting rod 22 arranged crosswise with the first connecting rod 20. The lower end of the first connecting rod 20 and the lower end of the second connecting rod 22 are respectively pivotally connected to the connecting seat 21, and the other end of the first connecting rod 20 is pivotally connected to the first slider 14, and the other end of the second connecting rod 22 is pivotally connected to the second slider 23. The first slider 14 and the second slider 23 are respectively slidably connected to the support frame 5 in the horizontal direction. By adjusting the first slider 14 and the second slider 23 to move closer to or away from each other, the up and down movement of the connecting seat 21 is adjusted, thereby adjusting the expansion and contraction amount of the elastic member 6, so as to achieve the purpose of applying a given material pressure on the pressing plate 4.

[0037] The mutual approaching or moving away of the first slider 14 and the second slider 23 is realized by the following optional mode: the first slider 14 and the second slider 23 slide along the left-right direction of the support frame 5, the adjusting unit further comprises a lead screw 16 extending along the sliding direction of the first slider 14 or the second slider 23 and arranged on the support frame 5, the lead screw 16 is a bidirectional lead screw or a right and left threaded lead screw, the first slider 14 and the second slider 23 are respectively connected with nuts on the lead screw 16, and the first slider 14 and the second slider 23 are driven to approach or move away from each other by the movement of the lead screw.

[0038] For example, the lead screw 16 comprises a screw rod rotatably arranged on the support frame 5, a first nut and a second nut threadedly connected in sequence on the screw rod, the screw rod has left-handed and right-handed threaded segments, the first nut is connected to the left-handed segment, the second nut is connected to the right-handed segment, the first slider is fixedly arranged with the first nut, and the second slider is fixedly arranged with the second nut, the first nut and the second nut are driven to move in opposite directions by the thread rotation difference, and the first slider and the second slider are realized to approach or move away from each other.

[0039] In optional embodiments, link assemblies (for example, Figure 2 ) are arranged on the front and back sides of the connecting seat 21 respectively, the first links of the front and back link assemblies are rotatably connected with the same first slider 14, and the second links of the front and back link assemblies are rotatably connected with the same second slider 23.

[0040] The driving mode of the lead screw 16 can be manual or electric, for example, one end of the lead screw 16 is fixedly connected with a manual wheel 7, the screw rod of the lead screw 16 is rotated by rotating the manual wheel 7, and the first slider and the second slider are realized to approach or move away from each other. The other end of the lead screw 16 is further connected with a speed reducer motor 11, the speed reducer motor 11 is electrically connected with a control box 9 arranged on the support frame 5, the speed reducer motor 11 is controlled to work by the control box 9, and the lead screw 16 is further controlled to work. In actual use, the manual driving mode or the electric driving mode can be selected according to actual conditions to drive the lead screw to work, and the connecting seat is adjusted to move up and down, so as to change the stretching amount of the elastic member, and the purpose of adjusting the pressure applied to the material by the pressure disc is achieved.

[0041] For example, as shown in Figure 1 , connecting ropes 8 are arranged on the opposite sides of the elastic member 6, each side of the connecting rope 8 is connected between the pressure disc 4 and the support frame 5, and each side of the connecting rope 8 is arranged in an inclined manner along the up-down direction, which can prevent the pressure disc 4 from tilting on one side, and can also control and limit the maximum position of the pressure disc descending.

[0042] The connecting rope 8 is made of steel wire rope. In this example, four connecting ropes 8 are provided. The upper ends of the four connecting ropes 8 are respectively connected to the four corners of the support frame 5 , and the lower ends of the four connecting ropes 8 are respectively connected to the four corners of the pressing plate 4 .

[0043] Refer again Figures 1 to 3 The anti-rolling device also includes a coal blocking mechanism arranged on the support frame 5, the coal blocking mechanism includes a rotating shaft 24 extending in the horizontal direction, and the rotating shaft 24 also extends in the left and right directions of the conveyor belt 2. The coal blocking mechanism also includes a coal blocking plate 13 whose upper end is sleeved on the rotating shaft 24 and can be rotated around the rotating shaft 24, a blocking rod 17 arranged on the support frame 5 and a plurality of counterweights 15 detachably connected to the coal blocking plate 13, the blocking rod 17 is connected between the two columns of the support frame 5, the coal blocking plate 13 is located above the conveyor belt 2 and the lower end of the coal blocking plate 13 is an arc-shaped end. In the conveying direction of the conveyor belt 2, the blocking rod 17, the coal blocking plate 13, the pressing plate 4 and the fixed frame 19 are arranged in sequence, and the blocking rod 17 is located at the front.

[0044] The outer surface of the rotating shaft 24 in the coal blocking mechanism has a thread. The coal blocking mechanism also includes an adjusting nut 12 threadedly connected to the rotating shaft 24 and located on both sides of the coal blocking plate 13. The adjusting nut 12 is used to adjust the center position of the coal blocking plate 13 so that the coal blocking plate 13 does not deviate during operation.

[0045] The coal baffle 13 is used during the conveyor belt 2 to transport material. Material can flow along the coal flow and enter the passage between the coal baffle 13 and the conveyor belt 2. Bolts are fixed to the coal baffle 13, and multiple counterweights 15 are mounted on the bolts. Nuts are attached to the bolts and on both sides of the counterweights 15. These nuts are used to adjust the position of the counterweights 15, thereby adjusting the initial opening and closing position of the coal baffle 13 and the resistance of the coal baffle to the passage of material. The baffle rod 17 is used to prevent the coal baffle from deflecting in the opposite direction due to the collision of the falling material when rolling material occurs.

[0046] The anti-rolling device also includes a sensor 10 arranged on the support frame 5 and located in front of the coal blocking plate 13. The sensor 10 is electrically connected to the control box 9 and is used to transmit the reverse deflection signal of the coal blocking plate 13 to the control box 9, and then transmit it to the monitoring center of the belt conveyor through the control box 9. The monitoring center has an alarm. After the reverse deflection signal of the sensor 10 is transmitted to the monitoring center, it can trigger the alarm to indicate that a large piece of material has rolled down. The alarm can use a light or sound alarm.

[0047] In other embodiments, the sensor 10 may also be disposed on the gear lever.

[0048] In actual working conditions, if the belt conveyor runs at a large inclination angle or the belt conveyor has a high speed, a large acceleration when starting and stopping, or random large pieces of irregular-shaped materials, the materials may roll or slide on the conveyor belt. Figure 5 As shown, the material is transported along the conveying direction. When the material passes through the anti-rolling device, the material enters from the channel between the coal blocking plate 13 and the conveyor belt 2. The coal blocking plate 13 can block the material falling downward, and then the material enters the channel between the buffer belt and the conveyor belt, and the pressure plate applies pressure to the material to stabilize the material and reduce the probability of large pieces of material rolling down; the material continues to be conveyed backward, and if during the conveying process, due to the existence of a large inclination angle, the rear part of the conveyor belt is higher than the front part of the conveyor belt, if there is material rolling down from the rear, the material will fall through the first mouth and fall between the buffer belt and the conveyor belt. The buffer belt can well slow down the inertial impact of the logistics rolling.

[0049] If the material rolls further forward, the coal baffle can prevent the rolling material from continuing to slide down. The coal baffle will deflect in the opposite direction under the collision of the material and touch the sensor. The sensor then transmits the signal back to the monitoring center through the control box, indicating that a large piece of material has rolled down and the danger has been warned, thereby achieving the purpose of prevention and monitoring.

[0050] In addition, in the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "install", "connect" and "connect" should be understood in a broad sense. For example, it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0051] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of the present invention, and the scope of patent protection of the embodiments of the present invention should be defined by the claims.

Claims

1. A material rolling prevention device for a belt conveyor, the belt conveyor comprising a frame and a conveyor belt, characterized in that: The anti-rolling device comprises: A support frame, the support frame being arranged on the frame; a buffer belt, the buffer belt being arranged along the extension direction of the conveyor belt and being located above the conveyor belt; a fixing frame, the fixing frame being arranged on the supporting frame and connected to one end of the buffer belt; The material pressing mechanism includes a material pressing plate connected to the other end of the buffer belt and an adjustment unit arranged between the material pressing plate and the support frame, and the adjustment unit is used to adjust the pressure applied by the material pressing plate to the material on the conveyor belt.

2. The anti-rolling device for belt conveyor according to claim 1, characterized in that: The adjusting unit includes a connecting seat located above the pressing plate, an elastic member connected between the connecting seat and the pressing plate, a connecting rod assembly, and a connecting rope connected between the support frame and the pressing plate. The connecting rod assembly is used to drive the connecting seat to move in the up and down directions, thereby adjusting the expansion and contraction amount of the elastic member, thereby adjusting the pressure applied by the pressing plate on the material.

3. The anti-rolling device for belt conveyor according to claim 2, characterized in that: The connecting rod assembly includes a first connecting rod and a second connecting rod arranged crosswise with the first connecting rod, one end of the first connecting rod and one end of the second connecting rod are respectively pivotally connected to the connecting seat, the other end of the first connecting rod is pivotally connected to the first slider, and the other end of the second connecting rod is pivotally connected to the second slider, the first slider and the second slider are respectively slidably connected to the support frame in the horizontal direction, and the up and down movement of the connecting seat is adjusted by adjusting the first slider and the second slider to move closer to or away from each other.

4. The anti-rolling device for belt conveyor according to claim 3, characterized in that: The adjustment unit also includes a screw extending along the sliding direction of the first slider or the second slider and arranged on the support frame. The screw is a bidirectional screw or a forward and reverse thread screw. The first slider and the second slider are respectively connected to the nuts on the screw. The movement of the screw drives the first slider and the second slider to move closer to or away from each other.

5. The anti-rolling device for belt conveyor according to claim 4, characterized in that: The anti-rolling device further includes a manual wheel fixedly arranged on one end of the lead screw; and / or, The anti-rolling device also includes a reduction motor connected to the other end of the lead screw and a control box arranged on the support frame and electrically connected to the reduction motor.

6. The anti-rolling device for belt conveyor according to claim 1, characterized in that: The fixing frame includes a fixing frame section extending along the width direction of the conveyor belt and a fixing frame section 2 formed by bending the two ends of the fixing frame section to the side and extending downward. The buffer belt is connected to both the fixing frame section 1 and the fixing frame section 2. The height of the pressing plate is lower than the height of the fixing frame section 1.

7. The anti-rolling device for a belt conveyor according to any one of claims 1 to 6, characterized in that: The anti-rolling device further includes a coal blocking mechanism provided on the support frame, the coal blocking mechanism including a coal blocking plate located above the conveyor belt and rotatable about a rotating shaft extending in a horizontal direction, and a blocking rod provided in front of the coal blocking plate, the blocking rod being used to limit the reverse deflection of the coal blocking plate due to collision with the rolling material; In the conveying direction of the conveyor belt, the blocking rod, the coal blocking plate, the pressing plate and the fixing frame are arranged in sequence.

8. The anti-rolling device for a belt conveyor according to claim 7, characterized in that: The anti-rolling device further comprises a sensor provided on the support frame and in front of the coal baffle plate or a sensor provided on the baffle rod, wherein the sensor is electrically connected to a control box of the anti-rolling device and is used to transmit a reverse deflection signal of the coal baffle plate to the control box, and then transmit the signal to a monitoring center of the belt conveyor through the control box; and / or, The coal blocking mechanism further includes a plurality of counterweight blocks detachably connected to the coal blocking plate.

9. The anti-rolling device for a belt conveyor according to claim 8, characterized in that: The monitoring center has an alarm, and after the reverse deflection signal of the sensor is transmitted to the monitoring center, the alarm can be triggered; and / or, The lower end portion of the coal blocking plate is an arc-shaped end portion.

10. A belt conveyor, characterized in that: The belt conveyor includes the anti-rolling device according to any one of claims 1 to 9.

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