A deviation-preventing belt conveyor and a deviation-preventing correction method

Abstract

The application discloses a kind of anti-deviation belt conveyors, it is related to the technical field of belt conveyor, including base, drum and the conveying belt between drum, the first side idler and the second side idler are inclinedly equipped in the both sides of base, the second side idler is connected in the base in the form of rotation by movable support, the first linear drive device is equipped in the below of movable support;One side of movable support is movably connected with anti-deviation monitoring wheel, the other side is movably connected with upper anti-deviation correction wheel, buffer mechanism for supporting anti-deviation monitoring wheel is equipped on movable support, pressure detection device is equipped in buffer mechanism, sliding connection mechanism for fixing upper anti-deviation correction wheel is equipped on movable support, second linear drive device is equipped on sliding connection mechanism.The application can carry out real-time monitoring to belt deviation, and reduce the damage of conveying belt by the change of side direction elevation angle, can effectively prolong the service life of conveying belt.

Description

Technical Field

[0001] This invention belongs to the field of belt conveyor technology, specifically relating to an anti-deviation belt conveyor and an anti-deviation correction method. Background Technology

[0002] A belt conveyor is short for belt conveyor, and it comes in stationary and mobile types. It is a simple and efficient continuous conveying machine that uses a flexible conveyor belt as the material-carrying and traction component. Traditional belt conveyors have upper and lower branches between the two rollers, each supported by several idlers. Material is placed on the upper branch, and the friction between the drive roller and the belt pulls the conveyor belt and the material along.

[0003] Existing belt conveyors are prone to belt misalignment, leading to conveyor shutdowns and severely impacting production. To prevent this, current methods involve adding several idlers to both sides of the conveyor belt. For example, Chinese patent CN201420727473.7 discloses a belt conveyor anti-misalignment device with vertically arranged idlers to limit belt deviation. While this device effectively prevents belt misalignment when the conveyor belt is unloaded, the increased friction between the belt and the idlers makes it difficult to forcibly stop misalignment when it occurs. Even if it can, it damages the sides of the conveyor belt, eventually rendering the entire conveyor belt unusable. To address this issue, we propose an anti-misalignment belt conveyor with adjustable side idler angles and a misalignment correction method. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-deviation conveyor belt and a method for correcting belt deviation. This method allows for real-time monitoring of belt deviation and reduces belt damage during correction by adjusting the lateral elevation angle, effectively extending the conveyor belt's service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design an anti-deviation belt conveyor, including a base, with rollers at both ends of the base and a conveyor belt connected between the rollers. Upper and lower rollers for supporting the conveyor belt are respectively provided on the upper and lower conveyor surfaces of the base. A first side roller and a second side roller are inclined along the length of the base on both sides. The first side roller is fixedly mounted on the base, and the second side roller is rotatably connected to the base via a movable bracket. A first linear drive device for adjusting the rotation of the movable bracket is provided below it. An anti-deviation monitoring wheel is movably connected to one side of the movable bracket corresponding to the conveyor belt feeding, and an upper anti-deviation correction wheel is movably connected to the other side. A buffer mechanism supporting the anti-deviation monitoring wheel is provided on the movable bracket, and a sliding connection mechanism for fixing the upper anti-deviation correction wheel is provided on the movable bracket. A second linear drive device is provided on the sliding connection mechanism. A pressure detection device is electrically connected to the first and second linear drive devices via a controller.

[0006] Furthermore, the movable bracket is connected to the base by a pivot pin.

[0007] Furthermore, the first linear drive device is one of a telescopic hydraulic cylinder, a telescopic pneumatic cylinder, or an electric telescopic cylinder. The two ends of the first linear drive device are rotatably connected to a movable bracket and a fixed support via shaft seats, and the fixed support is fixedly mounted on the machine base.

[0008] Furthermore, the buffer mechanism includes a spring, the side wall of the movable bracket is provided with a first sliding groove along the length direction, the pressure detection device is fixed at one end of the first sliding groove, one end of the spring abuts against the pressure detection end of the pressure detection device, the other end of the spring is fixed with a first sliding block adapted to the first sliding groove, and the anti-deviation monitoring wheel is fixed on the first sliding block.

[0009] Furthermore, the pressure detection device is a pressure-sensitive resistor type pressure sensor.

[0010] Furthermore, the sliding connection mechanism includes a second sliding groove and a first sliding block. The second sliding groove is arranged along the length direction of the movable bracket, the first sliding block is installed in the second sliding groove, and the upper anti-deviation correction wheel is fixed on the second sliding groove.

[0011] Furthermore, the second linear drive device is one of a telescopic hydraulic cylinder, a telescopic air cylinder, or an electric telescopic cylinder, and the two ends of the second linear drive device are respectively fixed on the upper anti-deviation correction wheel and the movable bracket.

[0012] Furthermore, a lower anti-deviation correction wheel is fixedly provided below the base along its length.

[0013] This invention also proposes a method for correcting belt misalignment in a belt conveyor, comprising the following steps: Step 1: Keep the anti-deviation monitoring wheel in contact with the edge of the normally conveying conveyor belt, keep the upper anti-deviation correction wheel at a certain distance from the edge of the conveyor belt, and set the pressure detection device to the normal value at this time. Step 2: The anti-deviation monitoring wheel monitors the conveyor belt's conveying status in real time. When the conveyor belt deviates from its designated path, it squeezes the anti-deviation monitoring wheel to move to the side of the deviation. Step 3: The pressure detection device determines the degree of conveyor belt misalignment based on the monitored pressure. Step 4: Based on the monitored degree of belt misalignment, the controller controls the first linear drive device to adjust the elevation angle of the movable support, increasing the support elevation angle of the second side idler roller on the misaligned side of the conveyor belt. At the same time, the controller controls the second linear drive device to drive the upper anti-deviation correction wheel to correct the belt misalignment. Step 5: Once the pressure detection device reaches a normal value, the conveyor belt deviation correction is completed. At this time, the controller controls the first linear drive device and the second linear drive device to reset the movable support and the upper anti-deviation correction wheel.

[0014] Furthermore, in step four, the first linear drive device adjusts the elevation angle of the movable support in a manner proportional to the pressure change value monitored by the pressure detection device.

[0015] The present invention proposes an anti-deviation belt conveyor, the advantages of which are as follows: (1) By setting anti-deviation monitoring wheels on both sides of the conveyor belt, the present invention can monitor the conveying status of the conveyor belt in real time, detect the deviation of the conveyor belt at the first time, and determine the degree of deviation.

[0016] (2) The present invention improves the elevation angle of the conveyor belt deviation position by setting an adjustable second side roller on one side of the conveyor belt, and increases the side azimuth tilt angle of the conveyor belt. By utilizing the gravity of the conveyor belt and the load itself, a downward sliding force will be generated when tilting. The downward sliding force can reduce the friction force of the anti-deviation correction wheel on the belt correction, thereby reducing the squeezing of the edge of the conveyor belt, and thus reducing the damage to the conveyor belt caused by the anti-deviation correction of the conveyor belt. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural schematic diagram of the anti-deviation belt conveyor of the present invention; Figure 2This is a schematic diagram of the installation of the second side idler roller, the upper anti-deviation correction wheel, and the anti-deviation monitoring wheel according to the present invention; Figure 3 yes Figure 1 Schematic diagram of the cross section at point AA; Figure 4 This is a schematic diagram of the internal structure of the buffer mechanism of the present invention; Figure 5 This is a structural schematic diagram of the sliding connection mechanism of the present invention; The markings in the diagram are as follows: 1. Machine base; 2. Roller; 3. Conveyor belt; 4. First side idler; 5. Upper idler; 6. Lower idler; 7. Second side idler; 8. Movable bracket; 9. Pin; 10. First slide rail; 11. Pressure detection device; 2. First sliding block; 3. Spring; 4. Second slide rail; 5. Second slider; 62. Second linear drive device; 7. Anti-deviation monitoring wheel; 8. Upper anti-deviation correction wheel; 9. First linear drive device; 10. Lower anti-deviation correction wheel; 11. Fixed support. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] See Figure 1 and 3 An anti-deviation belt conveyor includes a base 1, with rollers 2 at both ends of the base 1, which are a drive roller and a driven roller, respectively. A conveyor belt 3 is connected between the rollers 2. Upper rollers 51 and lower rollers 52 for supporting the conveyor belt 3 are respectively provided on the upper and lower conveyor surfaces of the base 1. A first side roller 4 and a second side roller 6 are inclined along the length direction on both sides of the base 1. The first side roller 4 is fixedly mounted on the base 1.

[0023] See Figure 3 The second side idler 6 is rotatably connected to the base 1 via a movable bracket 61. The movable bracket 61 is rotatably connected to the base 1 via a pin 62. Below the movable bracket 61 is a first linear drive device 9 for adjusting the rotation of the movable bracket 61. The first linear drive device 9 is one of a telescopic hydraulic cylinder, a telescopic air cylinder, or an electric telescopic cylinder. The two ends of the first linear drive device 9 are rotatably connected to the movable bracket 61 and the fixed support 11 respectively via bearing seats. The fixed support 11 is fixedly installed on the base 1. The first linear drive device 9 can drive the movable bracket 61 to rotate around the pin 62, thereby increasing the elevation angle of the second side idler 6. After the elevation angle is increased, the elevation angle of the conveyor belt 3's deviation position is increased, and the lateral tilt angle of the conveyor belt 3 is increased. Utilizing the gravity of the conveyor belt 3 and the load itself, a downward sliding force will be generated when tilting. The generated downward sliding force can counteract the friction between the second side idler 6 and the conveyor belt 3.

[0024] See Figure 2 The movable bracket 61 is movably connected to the anti-deviation monitoring wheel 7 on one side of the conveyor belt 3 for feeding, and to the upper anti-deviation correction wheel 8 on the other side. The anti-deviation monitoring wheel 7 is used to monitor the conveying status of the conveyor belt 3 on the side above the machine base 1 in real time, and the upper anti-deviation correction wheel 8 is used to correct the deviation of the conveyor belt 3 on the side above the machine base 1. The layout adopts the front detection and rear correction method.

[0025] See Figure 2-4The movable support 61 is equipped with a buffer mechanism that supports the anti-deviation monitoring wheel 7. The buffer mechanism is equipped with a pressure detection device 64, which is a pressure-sensitive resistor type pressure sensor. The buffer mechanism includes a spring 66. The side wall of the movable support 61 is provided with a first slide groove 63 along the length direction. The pressure detection device 64 is fixed to one end of the first slide groove 63. One end of the spring 66 presses against the pressure detection end of the pressure detection device 64. The other end of the spring 66 is fixed with a first sliding block 65 that is adapted to the first slide groove 63. The anti-deviation monitoring wheel 7 is fixed on the first sliding block 65. When the conveyor belt 3 deviates from its designated path, it will compress the anti-deviation monitoring wheel 7 to move to the deviated side, thereby driving the first sliding block 65 to move within the first chute 63. The spring 66 is compressed and transmits the force to the pressure detection device 64. The pressure detection device 64 determines the degree of deviation of the conveyor belt 3 by detecting the magnitude of the pressure. The pressure detected by the pressure detection device 64 is proportional to the degree of deviation of the conveyor belt 3. The pressure detection device 64 feeds back the detected pressure to the controller, which can be a PLC or a microcontroller. The controller controls the extension length of the first linear drive device 9 based on the received pressure value. The first linear drive device 9 increases the elevation angle of the second side idler roller 6, thereby increasing the lateral tilt angle of the conveyor belt 3 at the deviation position. By utilizing the downward force of the conveyor belt 3 and the load itself, the resistance of the upper anti-deviation correction wheel 8 to belt correction is reduced, thereby reducing the compression on the edge of the conveyor belt 3 and thus reducing belt damage caused by the anti-deviation correction of the conveyor belt 3.

[0026] See Figure 2 and 5 The movable support 61 is provided with a sliding connection mechanism for fixing the upper anti-deviation correction wheel 8. The sliding connection mechanism includes a second slide groove 67 and a second sliding block 68. The second slide groove 67 is arranged along the length direction of the movable support 61, and the second sliding block 68 is installed in the second slide groove 67. The upper anti-deviation correction wheel 8 is fixed on the second sliding block 68. The sliding connection mechanism is provided with a second linear drive device 69. The second linear drive device 69 is one of a telescopic oil cylinder, a telescopic air cylinder, or an electric telescopic cylinder. The two ends of the second linear drive device 69 are respectively fixed on the upper anti-deviation correction wheel 8 and the movable support 61. When the anti-deviation monitoring wheel 7 detects belt deviation, the second linear drive device 69 drives the upper anti-deviation correction wheel 8 to move toward the conveyor belt 3 and pushes the conveyor belt 3 to perform a reset movement. At this time, the anti-deviation reset of the conveyor belt 3 by the upper anti-deviation correction wheel 8 and the increase of the elevation angle of the second side roller 6 can be carried out simultaneously.

[0027] See Figure 1 and 3 A lower anti-deviation straightening wheel 10 is also fixedly installed below the base 1 along the length direction. The lower anti-deviation straightening wheel 10 is used to straighten the conveyor belt 3 on the side located below the base 1.

[0028] To further illustrate this invention, a method for correcting belt misalignment in a conveyor belt is also proposed, which specifically includes the following steps: 1) Keep the anti-deviation monitoring wheel 7 and the upper anti-deviation correction wheel 8 in contact with the edge of the normally conveying conveyor belt 3, keep the upper anti-deviation correction wheel 8 at a certain distance from the edge of the conveyor belt 3, and set the pressure detection device 64 to the normal value at this time.

[0029] 2) The anti-deviation monitoring wheel 7 monitors the conveying status of the conveyor belt 3 in real time. When the conveyor belt 3 deviates from its original direction, it squeezes the anti-deviation monitoring wheel 7 to move to the side of the deviation.

[0030] 3) The pressure detection device 64 determines the degree of deviation of the conveyor belt 3 based on the monitored pressure.

[0031] 4) Based on the monitored degree of deviation, the controller controls the first linear drive device 9 to adjust the elevation angle of the movable support 61, increasing the support elevation angle of the second side roller 6 on the deviated side of the conveyor belt 3. At the same time, the controller controls the second linear drive device 69 to drive the upper anti-deviation correction wheel 8 to correct the deviation of the conveyor belt 3. The elevation angle of the movable support 61 adjusted by the first linear drive device 9 is proportional to the pressure change value monitored by the pressure detection device 64.

[0032] 5) When the monitoring value of the pressure detection device 64 reaches the normal value, the deviation correction of the conveyor belt 3 is completed. At this time, the controller controls the first linear drive device 9 and the second linear drive device 69 to reset the movable bracket 61 and the upper anti-deviation correction wheel 8.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A belt conveyor for preventing belt misalignment, comprising a base (1), wherein rollers (2) are provided at both ends of the base (1), and a conveyor belt (3) is connected between the rollers (2), and upper rollers (51) and lower rollers (52) for supporting the conveyor belt (3) are respectively provided on the upper and lower conveyor surfaces of the base (1), characterized in that, The machine base (1) is provided with a first side roller (4) and a second side roller (6) at an inclined interval along the length direction on both sides. The first side roller (4) is fixedly mounted on the machine base (1), and the second side roller (6) is rotatably connected to the machine base (1) through a movable bracket (61). A first linear drive device (9) for adjusting the rotation of the movable bracket (61) is provided below the movable bracket (61). The movable bracket (61) is movably connected to an anti-deviation monitoring wheel (7) on one side of the conveyor belt (3) for feeding, and to an upper anti-deviation correction wheel (8) on the other side. The movable support (61) is provided with a buffer mechanism that supports the anti-deviation monitoring wheel (7), and the buffer mechanism is provided with a pressure detection device (64). The movable bracket (61) is provided with a sliding connection mechanism for fixing the upper anti-deviation correction wheel (8), and the sliding connection mechanism is provided with a second linear drive device (69). The pressure detection device (64) is electrically connected to the first linear drive device (9) and the second linear drive device (69) via a controller.

2. The anti-deviation belt conveyor according to claim 1, characterized in that, The movable bracket (61) is connected to the base (1) by means of a pivot pin (62).

3. The anti-deviation belt conveyor according to claim 1, characterized in that, The first linear drive device (9) is one of a telescopic oil cylinder, a telescopic air cylinder or an electric telescopic cylinder. The two ends of the first linear drive device (9) are rotatably connected to the movable bracket (61) and the fixed support (11) respectively through the shaft seat. The fixed support (11) is fixedly installed on the machine base (1).

4. The anti-deviation belt conveyor according to claim 1, characterized in that, The buffer mechanism includes a spring (66), the side wall of the movable bracket (61) is provided with a first slide groove (63) along the length direction, the pressure detection device (64) is fixed at one end of the first slide groove (63), one end of the spring (66) abuts against the pressure detection end of the pressure detection device (64), the other end of the spring (66) is fixed with a first sliding block (65) that is adapted to the first slide groove (63), and the anti-deviation monitoring wheel (7) is fixed on the first sliding block (65).

5. The anti-deviation belt conveyor according to claim 4, characterized in that, The pressure detection device (64) is a pressure sensor of the piezoresistive type.

6. The anti-deviation belt conveyor according to claim 1, characterized in that, The sliding connection mechanism includes a second slide groove (67) and a second sliding block (68). The second slide groove (67) is arranged along the length direction of the movable bracket (61), and the second sliding block (68) is installed in the second slide groove (67). The upper anti-deviation correction wheel (8) is fixed on the second sliding block (68).

7. The anti-deviation belt conveyor according to claim 6, characterized in that, The second linear drive device (69) is one of a telescopic hydraulic cylinder, a telescopic air cylinder or an electric telescopic cylinder. The two ends of the second linear drive device (69) are respectively fixed on the upper anti-deviation correction wheel (8) and the movable bracket (61).

8. The anti-deviation belt conveyor according to claim 1, characterized in that, The base (1) is also fixedly provided with a lower anti-deviation correction wheel (10) along its length.

9. A method for correcting belt misalignment of a conveyor belt according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Keep the anti-deviation monitoring wheel (7) in contact with the edge of the normally conveying conveyor belt (3), keep the upper anti-deviation correction wheel (8) at a certain distance from the edge of the conveyor belt (3), and set the pressure detection device (64) to the normal value at this time; Step 2: The anti-deviation monitoring wheel (7) monitors the conveying status of the conveyor belt (3) in real time. When the conveyor belt (3) deviates, the anti-deviation monitoring wheel (7) is squeezed to move to the side of the deviation. Step 3: The pressure detection device (64) determines the degree of deviation of the conveyor belt (3) based on the monitored pressure. Step 4: Based on the monitored degree of deviation, the controller controls the first linear drive device (9) to adjust the elevation angle of the movable bracket (61), increases the support elevation angle of the second side roller (6) on the deviated side of the conveyor belt (3), and at the same time controls the second linear drive device (69) to drive the upper anti-deviation correction wheel (8) to correct the deviation of the conveyor belt (3). Step 5: When the monitoring value of the pressure detection device (64) reaches the normal value, the deviation correction of the conveyor belt (3) is completed. At this time, the controller controls the first linear drive device (9) and the second linear drive device (69) to reset the movable bracket (61) and the upper anti-deviation correction wheel (8).

10. The method for correcting belt misalignment of a belt conveyor according to claim 9, characterized in that, In step four, the first linear drive device (9) adjusts the elevation angle of the movable support (61) in a manner proportional to the pressure change value monitored by the pressure detection device (64).

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