A belt speed adjustment system and method for a belt conveyor based on material flow data

Abstract

The application discloses a kind of based on material flow data's belt conveyor belt speed adjusting system and method, and a kind of material flow is continuously measured by material weighing device, and according to material flow variation control transmission motor adjustment speed, adjust the speed of belt conveyor, ensure that the system of material flow stability, while material weighing device in main supporting roller cooperation auxiliary supporting roller, it can support guiding to belt conveyor, make it gently pass through, prevent its subsidence deformation material accumulation, influence the monitoring accuracy of material flow.It is characterized in that signal interaction is established between the material weighing device and data processor, signal interaction is established between the speed sensor and data processor, signal interaction is established between the data processor and controller, the material weighing device is arranged on the rack of belt conveyor, and is located below the conveyor belt of belt conveyor, and is in contact with the conveyor belt, for continuously weighing the bulk material on the conveyor belt.

Description

Technical Field

[0001] This invention relates to a belt speed adjustment system and method for a belt conveyor based on material flow data. It involves a system and method that adjusts the belt speed of the conveyor belt by collecting and monitoring the material flow data of the conveyor to ensure stable material flow. It belongs to the field of conveyor technology and specifically relates to a material weighing device that can support and guide the conveyor belt when transporting bulk materials, so that it passes smoothly and prevents it from sagging, deforming, and accumulating materials, which would affect the accuracy of material flow monitoring. Background Technology

[0002] Belt conveyors are indispensable and economical logistics conveying equipment for forming rhythmic assembly lines. To monitor the material flow rate on the conveyor belt, belt scales are generally used to continuously weigh the bulk materials on the conveyor belt. The weighing bridge of the belt scale is installed on the conveyor frame. When material passes by, the weighing roller detects the weight of the material on the belt and acts on the weighing sensor through a lever, generating a voltage signal proportional to the belt load. A weighing sensor is mounted on the weighing bridge of the belt scale. During operation, the detected weight of the material on the belt is sent to the weighing instrument. Simultaneously, the speed signal of the belt conveyor from the speed sensor is also sent to the weighing instrument. The instrument integrates the speed signal and the weighing signal to obtain the instantaneous material flow rate. However, belt scales generally only measure and monitor the material flow rate; subsequent data analysis based on the material flow rate is not supported. The change in material flow rate affects the conveyor belt speed. When the material flow rate on the conveyor belt increases, if the original low material flow rate is maintained, the material accumulated at higher points on the conveyor belt is likely to fall off, especially when the conveyor belt turns. This causes unstable transport and results in a larger amount of material being transported to the next process, which may lead to delays in processing. Conversely, when the material flow rate on the conveyor belt decreases and the operating speed is low, subsequent processes may not be able to obtain processed materials in time. At the same time, due to the relatively large gap between the metering idlers—generally 0.8-1.5 meters—the conveyor belt is prone to sagging and deformation under the influence of material gravity, especially when the conveyor belt tension is insufficient. This causes material to accumulate between the metering idlers, hindering the normal operation of the conveyor belt and affecting the accuracy of material flow rate monitoring.

[0003] Publication number CN217687434U discloses an electronic belt scale with an adjustable frame, including a base, a frame mounted on the top of the base, a weighing sensor mounted on the top of the frame, and mounting plates fixed on both sides of the frame. This belt scale can only measure and monitor the material flow rate, but does not adjust the conveyor belt speed according to changes in the material flow rate to ensure stable material transportation. At the same time, due to the large gap between the metering idlers, the conveyor belt is prone to sagging and deformation under the weight of the material, causing material to accumulate at this point and hindering the normal operation of the conveyor belt, thus affecting the accuracy of material flow rate monitoring.

[0004] Publication number CN217637595U discloses a high-precision belt scale, belonging to the technical field of high-precision belt scales. It includes a high-precision belt scale body and a mounting frame for installing the high-precision belt scale body. A cleaning collection box and a cleaning collection cover are provided below the high-precision belt scale body. This belt scale does not adjust the conveyor belt speed according to changes in material flow to ensure stable material transportation. At the same time, due to the large gap between the metering idlers, the conveyor belt is prone to sagging and deformation under the action of material gravity, causing material to accumulate at this point and hindering the normal operation of the conveyor belt, thereby affecting the accuracy of material flow monitoring. Summary of the Invention

[0005] To improve the above situation, the present invention provides a belt conveyor speed adjustment system and method based on material flow data. This system and method continuously measures the material flow through a material weighing device and controls the speed of the drive motor to adjust the belt speed according to the changes in material flow, thereby ensuring stable material transportation. At the same time, the main idler roller in the material weighing device, together with the auxiliary idler roller, can support and guide the conveyor belt, allowing it to pass smoothly and preventing it from sagging, deforming, and accumulating material, which would affect the accuracy of material flow monitoring.

[0006] The belt speed adjustment system for a belt conveyor based on material flow data of the present invention is implemented as follows: The belt speed adjustment system for a belt conveyor based on material flow data of the present invention includes a material weighing device, a speed sensor, a controller, and a data processor.

[0007] The feature is that a signal interaction is established between the material weighing device and the data processor, a signal interaction is established between the speed sensor and the data processor, and a signal interaction is established between the data processor and the controller.

[0008] The material weighing device is mounted on the frame of the belt conveyor, located below the conveyor belt and in contact with it, for the continuous weighing of bulk materials on the conveyor belt.

[0009] The speed sensor is installed at the end of the drive roller of the belt conveyor and is used to measure the conveying speed of the belt conveyor.

[0010] The data processor is mounted on the belt conveyor frame. It contains a signal conversion module and a data processing module. The signal conversion module converts gravity and velocity signals into data, while the data processing module performs integral calculations on the gravity and velocity data to obtain the instantaneous material flow rate, which is then compared and analyzed with a set threshold.

[0011] The controller is installed on the drive motor of the belt conveyor and is used to control and adjust the speed of the drive motor according to the instantaneous material flow rate, thereby adjusting the conveying speed of the belt conveyor.

[0012] This invention relates to a material weighing device, which comprises a roller support, a main roller, an auxiliary roller, a weight-reducing groove, a buffer spring, a weighing plate, a telescopic support, a rubber pad, a fixed groove, a weighing sensor, a weight-collecting block, and a weight-collecting platform.

[0013] The weighing plate is placed on the telescopic support.

[0014] Preferably, there are two telescopic supports, each located near one end of the weighing plate.

[0015] Preferably, the weighing plate has corresponding clearance slots on both sides, the clearance slots are located in the middle of the weighing plate, and the clearance slots are isosceles trapezoidal in shape.

[0016] The weighing platform is placed on one side of the weighing plate.

[0017] Preferably, the weighing platform is located below the weighing plate, and the weighing platform has a hollow structure. The cross-section of the weighing platform gradually decreases from the side connected to the weighing plate to the other side.

[0018] A rubber pad is placed on the load cell, and a fixing groove is cut into the rubber pad.

[0019] The weight block is placed on the other side of the weighting platform.

[0020] Preferably, the weight-collecting block is located below the weight-collecting platform, and the width of the longitudinal section of the weight-collecting block gradually decreases from one end to seven-eighths of the way down, and remains constant from seven-eighths of the way down to the other end.

[0021] One end of the weight-collecting block is connected to the weight-collecting platform, and the other end is locked in a fixed groove.

[0022] Two sets of buffer springs are placed on the other side of the weighing plate, each set consisting of five buffer springs.

[0023] Preferably, the buffer springs are located above the weighing plate, with two sets of buffer springs respectively close to both ends of the weighing plate, and the five buffer springs in the same set arranged in an X-shape on the weighing plate.

[0024] The idler roller bracket is placed on the buffer spring.

[0025] Preferably, there are two idler roller brackets, and the two idler roller brackets and the two sets of buffer springs correspond one-to-one.

[0026] Preferably, the idler roller bracket has a U-shaped structure, and the side plate of the idler roller bracket has an arc-shaped structure.

[0027] The roller support has corresponding weight-reduction grooves on both side plates.

[0028] A set of main idlers is positioned between the two side plates of the idler bracket. Each set of main idlers consists of three main idlers, and the two ends of each main idler are rotatably connected to the two side plates of the idler bracket via bearings.

[0029] Preferably, the three main idler rollers in the same group are equidistantly distributed along the edge of the side plate of the idler roller bracket. The main idler rollers have a cylindrical structure, and their diameter gradually increases from the middle to both ends.

[0030] A set of auxiliary rollers is positioned between the two side plates of the roller bracket. Each set of auxiliary rollers consists of two auxiliary rollers, and the two ends of the auxiliary rollers are rotatably connected to the two side plates of the roller bracket via bearings.

[0031] Preferably, within the same group, a single auxiliary roller is located between two adjacent main rollers. The auxiliary roller has a cylindrical structure, and its diameter gradually increases from the middle to both ends. The diameter of the auxiliary roller is smaller than that of the main roller.

[0032] This invention also relates to a method for adjusting the belt speed of a belt conveyor based on material flow data, comprising the following steps:

[0033] 1) The belt speed is adjusted using a belt speed adjustment system based on material flow data. When the belt conveyor carries material through the material weighing device, the conveyor belt passes smoothly under the guidance of the main idler and the auxiliary idler. At the same time, the material exerts pressure on the idler support and the weighing plate under the action of gravity. The pressure is then collected by the weighing platform and the weighing block, so that the weighing sensor continuously collects the gravity signal of the material on the conveyor belt and sends the collected gravity signal to the data processor.

[0034] 2) At the same time, the speed sensor on the drive roller continuously collects the conveying speed signal of the conveyor belt and sends the collected speed signal to the data processor;

[0035] 3) After receiving the gravity signal and velocity signal, the data processor converts them into gravity data and velocity data through the signal conversion module, and performs integral calculation on the gravity data and signal data through the data processing module to obtain the instantaneous material flow rate value, and compares and analyzes it with the set threshold.

[0036] 4) When the instantaneous material flow rate is less than the set threshold, the data processor sends an adjustment signal to the controller. After receiving the adjustment signal, the controller controls the drive motor to increase its speed, thereby speeding up the conveyor belt and ensuring that the conveyor belt transports enough material to the next process.

[0037] 5) When the instantaneous material flow rate exceeds the set threshold, the data processor sends an adjustment signal to the controller. After receiving the adjustment signal, the controller controls the drive motor to reduce its speed, thereby slowing down the conveyor belt's conveying speed to ensure that the conveyor belt delivers the appropriate amount of material to the next process, making the material conveying more stable. Beneficial effects

[0038] First, it can continuously measure the material flow rate and adjust the conveyor belt speed according to the changes in material flow rate to ensure stable material conveying.

[0039] Second, it can support and guide the conveyor belt, allowing it to pass smoothly and preventing it from sagging, deforming, or accumulating material that could obstruct the normal operation of the conveyor belt and affect the accuracy of material flow monitoring. Attached Figure Description

[0040] Figure 1 A schematic diagram of the material weighing device of a belt conveyor speed adjustment system based on material flow data according to the present invention;

[0041] Figure 2 This invention provides a schematic diagram of the material weighing device of a belt conveyor speed adjustment system based on material flow data, which only shows the structure of the weighing plate.

[0042] Figure 3 This invention provides a schematic diagram of the material weighing device of a belt conveyor speed adjustment system based on material flow data, which only shows the structure at the idler roller support.

[0043] Attached Figure

[0044] The components are: roller bracket (1), main roller (2), auxiliary roller (3), weight reduction groove (4), buffer spring (5), weighing plate (6), telescopic bracket (7), rubber pad (8), fixed groove (9), weighing sensor (10), weight collection block (11), and weight collection platform (12). Detailed Implementation

[0045] The present invention discloses a belt conveyor speed adjustment system based on material flow data, which is implemented as follows: it includes a material weighing device, a speed sensor, a controller, and a data processor.

[0046] The feature is that a signal interaction is established between the material weighing device and the data processor, a signal interaction is established between the speed sensor and the data processor, and a signal interaction is established between the data processor and the controller.

[0047] The material weighing device is mounted on the frame of the belt conveyor, located below the conveyor belt and in contact with it, for the continuous weighing of bulk materials on the conveyor belt.

[0048] The speed sensor is installed at the end of the drive roller of the belt conveyor and is used to measure the conveying speed of the belt conveyor.

[0049] The data processor is mounted on the belt conveyor frame. It contains a signal conversion module and a data processing module. The signal conversion module converts gravity and velocity signals into data, while the data processing module performs integral calculations on the gravity and velocity data to obtain the instantaneous material flow rate, which is then compared and analyzed with a set threshold.

[0050] The controller is installed on the drive motor of the belt conveyor and is used to control and adjust the speed of the drive motor based on the instantaneous material flow rate, thereby regulating the conveying speed of the belt conveyor.

[0051] This invention relates to a material weighing device, which comprises a roller support (1), a main roller (2), an auxiliary roller (3), a weight reduction groove (4), a buffer spring (5), a weighing plate (6), a telescopic support (7), a rubber pad (8), a fixing groove (9), a weighing sensor (10), a weight collection block (11), and a weight collection platform (12).

[0052] The weighing plate (6) is placed on the telescopic support (7).

[0053] Preferably, there are two telescopic supports (7), and the two telescopic supports (7) are respectively located near both ends of the weighing plate (6).

[0054] Preferably, the weighing plate (6) has clearance slots on both sides, the clearance slots are located in the middle of the weighing plate (6), and the clearance slots are isosceles trapezoidal structures.

[0055] The weighing platform (12) is placed on one side of the weighing plate (6).

[0056] Preferably, the weighing platform (12) is located below the weighing plate (6), the weighing platform (12) is a hollow structure, and the cross-section of the weighing platform (12) gradually decreases from the side connected to the weighing plate (6) to the other side.

[0057] A rubber pad (8) is placed on the load cell (10), and a fixing groove (9) is opened on the rubber pad (8).

[0058] The weight block (11) is placed on the other side of the weight platform (12).

[0059] Preferably, the weight-collecting block (11) is located below the weight-collecting platform (12), and the width of the longitudinal section of the weight-collecting block (11) gradually decreases from one end to seven-eighths of the way down, and remains constant from seven-eighths of the way down to the other end.

[0060] One end of the weight block (11) is connected to the weight platform (12), and the other end is locked in the fixing groove (9).

[0061] Two sets of buffer springs (5) are placed on the other side of the weighing plate (6). Each set of buffer springs (5) consists of five buffer springs (5).

[0062] Preferably, the buffer springs (5) are located above the weighing plate (6), and the two sets of buffer springs (5) are respectively close to both ends of the weighing plate (6). The five buffer springs (5) in the same set are distributed in an X-shape on the weighing plate (6).

[0063] The idler roller bracket (1) is placed on the buffer spring (5).

[0064] Preferably, there are two idler brackets (1), and the two idler brackets (1) and the two sets of buffer springs (5) correspond one-to-one.

[0065] Preferably, the idler bracket (1) has a U-shaped structure, and the side plate of the idler bracket (1) has an arc-shaped structure.

[0066] The roller bracket (1) has corresponding weight reduction grooves (4) on both sides.

[0067] A set of main rollers (2) is placed between the two side plates of the roller bracket (1). The set of main rollers (2) consists of three main rollers (2). The two ends of the main rollers (2) are rotatably connected to the two side plates of the roller bracket (1) through bearings.

[0068] Preferably, the three main idler rollers (2) in the same group are equidistantly distributed along the edge of the side plate of the idler roller bracket (1). The main idler rollers (2) have a cylindrical structure, and the diameter of the main idler rollers (2) gradually increases from the middle to both ends.

[0069] A set of auxiliary rollers (3) is placed between the two side plates of the roller bracket (1). Each set of auxiliary rollers (3) consists of two auxiliary rollers (3). The two ends of the auxiliary rollers (3) are rotatably connected to the two side plates of the roller bracket (1) through bearings.

[0070] Preferably, a single auxiliary roller (3) in the same group is located between two adjacent main rollers (2). The auxiliary roller (3) has a cylindrical structure, and the diameter of the auxiliary roller (3) gradually increases from the middle to both ends. The diameter of the auxiliary roller (3) is smaller than the diameter of the main roller (2).

[0071] Preferably, the buffer spring (5) is a steel spring, which is a mechanical part that works by utilizing elasticity. It is generally made of spring steel and is used to control the movement of machine parts, mitigate impacts or vibrations, store energy, and measure the magnitude of force.

[0072] This invention also relates to a method for adjusting the belt speed of a belt conveyor based on material flow data, comprising the following steps:

[0073] 1) The belt speed is adjusted by using the belt speed adjustment system based on material flow data. When the belt conveyor carries the material through the material weighing device, the conveyor belt passes smoothly under the guidance of the main idler (2) and the auxiliary idler (3). At the same time, the material gravity applies pressure to the idler bracket (1) and the weighing plate (6). The pressure is then collected by the weight collection platform (12) and the weight collection block (11), so that the weighing sensor (10) continuously collects the material gravity signal on the conveyor belt and sends the collected gravity signal to the data processor.

[0074] 2) At the same time, the speed sensor on the drive roller continuously collects the conveying speed signal of the conveyor belt and sends the collected speed signal to the data processor;

[0075] Preferably, the speed sensor directly converts the rotational speed signal into a linear speed signal.

[0076] 3) After receiving the gravity signal and velocity signal, the data processor converts them into gravity data and velocity data through the signal conversion module, and performs integral calculation on the gravity data and signal data through the data processing module to obtain the instantaneous material flow rate value, and compares and analyzes it with the set threshold.

[0077] Preferably, the set threshold is set according to the target material conveying flow rate.

[0078] 4) When the instantaneous material flow rate is less than the set threshold, the data processor sends an adjustment signal to the controller. After receiving the adjustment signal, the controller controls the drive motor to increase its speed, thereby speeding up the conveyor belt and ensuring that the conveyor belt transports enough material to the next process.

[0079] 5) When the instantaneous material flow rate exceeds the set threshold, the data processor sends an adjustment signal to the controller. After receiving the adjustment signal, the controller controls the drive motor to reduce its speed, thereby slowing down the conveyor belt's conveying speed to ensure that the conveyor belt delivers the appropriate amount of material to the next process, making the material conveying more stable.

[0080] Preferably, the conveyor belt speed is adjusted in real time according to changes in material flow rate;

[0081] There are two telescopic supports (7), which are designed to be close to both ends of the weighing plate (6). This design can provide stable support for the weighing plate (6) and can also expand and contract according to changes in the load on the weighing plate, thus avoiding compression, deformation and damage.

[0082] The weighing plate (6) has clearance slots on both sides. The clearance slots are located in the middle of the weighing plate (6). The clearance slots are designed as isosceles trapezoids, which can reduce the weight of the weighing plate (6), reduce the weighing base, and increase the accuracy of material weighing.

[0083] The weighing platform (12) is located below the weighing plate (6). The weighing platform (12) has a hollow structure. The cross-section of the weighing platform (12) gradually decreases from one side connected to the weighing plate (6) to the other side. This design can reduce the weight while better collecting the weight of the material and improving the weighing accuracy.

[0084] The weight collection block (11) is located below the weight collection platform (12). The width of the longitudinal section of the weight collection block (11) gradually decreases from one end to seven-eighths of the way down and remains constant from seven-eighths of the way down to the other end. This design allows the weight of the material to be collected, which is convenient for the weighing sensor (10) to collect data.

[0085] The design of the rubber pad (8) and the fixing groove (9) can hold the weight block (11) in the groove to squeeze the weighing sensor (10) for pressure data collection, and prevent the weight block (11) from being placed directly on the weighing sensor (10) and being squeezed hard.

[0086] The buffer spring (5) is located above the weighing plate (6). The two sets of buffer springs (5) are close to both ends of the weighing plate (6). The five buffer springs (5) in the same set are arranged in an X-shape on the weighing plate (6), which can support the roller bracket (1) more stably and buffer the material when it passes through, so that the monitoring value of the weighing sensor (10) is more stable.

[0087] The side plate of the idler bracket (1) is designed with an arc structure, which enables multiple main idlers (2) to cooperate with auxiliary idlers (3) to form a gentle curve to support and guide the conveyor belt, so that it passes smoothly and prevents it from falling and deforming. Material accumulation hinders the normal operation of the conveyor belt and affects the accuracy of material flow monitoring.

[0088] The three main idler rollers (2) in the same group are distributed at equal intervals along the edge of the side plate of the idler roller bracket (1). The main idler rollers (2) are cylindrical structures. The design of the main idler rollers (2) gradually increasing in diameter from the middle to both ends can avoid the conveyor belt, so that the conveyor belt can hold the material for conveying and prevent the material from falling off the conveyor belt.

[0089] The main idler (2) and the auxiliary idler (3) can support and guide the conveyor belt, so that it passes smoothly and prevents it from falling, deforming, and accumulating materials, which would affect the accuracy of material flow monitoring.

[0090] The material weighing device can continuously measure the material flow rate and control the speed of the drive motor to adjust the belt speed according to the material flow rate change, so as to ensure the stable material conveying. At the same time, the main idler (2) and the auxiliary idler (3) in the material weighing device can support and guide the conveyor belt, so that it passes smoothly and prevents it from falling, deforming, and accumulating materials, which would affect the accuracy of material flow rate monitoring.

[0091] It should be noted that, unless otherwise explicitly specified and limited, the terms "placed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections such as folded edges, rivets, pins, adhesives, and welds; detachable connections such as threaded connections, snap-fit ​​connections, and hinges; integral connections; electrical connections; direct connections; or indirect connections via an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0092] The above embodiments are preferred embodiments of the present invention. To save space, the applicant has not added other embodiments, but this is not intended to limit the scope of the present invention. Any person skilled in the art can make some modifications without departing from the scope of the present invention; that is, all equivalent modifications made in accordance with the present invention should be covered by the scope of the present invention.

Claims

1. A method for adjusting the belt speed of a belt conveyor based on material flow data, characterized in that: The material weighing device includes a roller bracket, main rollers, auxiliary rollers, a weighing plate, a telescopic bracket, rubber pads, a fixing groove, a weighing sensor, a weighting block, and a weighting platform. The weighing plate is placed on the telescopic bracket, and the weighting platform is placed on one side of the weighing plate. A rubber pad is placed on the weighing sensor, and a fixing groove is opened on the rubber pad. The weighting block is placed on the other side of the weighting platform, with one end connected to the weighting platform and the other end locked in the fixing groove. A set of main rollers, consisting of three main rollers, is placed between the two side plates of the roller bracket. A set of auxiliary rollers, consisting of two auxiliary rollers, is placed between the two side plates of the roller bracket. Each auxiliary roller in the same set is located between two adjacent main rollers. The three main rollers in the same set are equidistantly distributed along the edge of the side plate of the roller bracket. The roller bracket has a U-shaped structure, and the side plate of the roller bracket has an arc-shaped structure, so that multiple main rollers and auxiliary rollers cooperate to form a gentle curve to support and guide the conveyor belt. The device includes the following steps: 1) The belt speed is adjusted using a belt speed adjustment system based on material flow data. When the belt conveyor carries material through the material weighing device, the conveyor belt passes smoothly under the guidance of the main idler and the auxiliary idler. At the same time, the material exerts pressure on the idler support and the weighing plate under the action of gravity. The pressure is then collected by the weighing platform and the weighing block, so that the weighing sensor continuously collects the gravity signal of the material on the conveyor belt and sends the collected gravity signal to the data processor. 2) At the same time, the speed sensor on the drive roller continuously collects the conveying speed signal of the conveyor belt and sends the collected speed signal to the data processor; 3) After receiving the gravity signal and velocity signal, the data processor converts them into gravity data and velocity data through the signal conversion module, and performs integral calculation on the gravity data and velocity data through the data processing module to obtain the instantaneous material flow rate value, and compares and analyzes it with the set threshold. 4) When the instantaneous material flow rate is less than the set threshold, the data processor sends an adjustment signal to the controller. After receiving the adjustment signal, the controller controls the drive motor to increase its speed, thereby speeding up the conveyor belt and ensuring that the conveyor belt transports enough material to the next process. 5) When the instantaneous material flow rate is greater than the set threshold, the data processor sends an adjustment signal to the controller. After receiving the adjustment signal, the controller controls the drive motor to reduce its speed, thereby slowing down the conveyor belt's conveying speed to ensure that the conveyor belt conveys the appropriate amount of material to the next process, making the material conveying more stable.

2. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 1, characterized in that... The belt conveyor speed adjustment system based on material flow data includes a material weighing device, a speed sensor, a controller, and a data processor. Signal interaction is established between the material weighing device and the data processor, between the speed sensor and the data processor, and between the data processor and the controller. The material weighing device is mounted on the belt conveyor frame, located below the conveyor belt, and in contact with the conveyor belt. It is used to continuously weigh the bulk material on the conveyor belt. The speed sensor is located at the end of the belt conveyor drive roller and is used to measure the conveying speed of the belt. The data processor is mounted on the belt conveyor frame and includes a signal conversion module and a data processing module. The signal conversion module converts gravity and speed signals into data. The data processing module performs integral calculations on the gravity and speed data to obtain the instantaneous material flow value and compares it with a set threshold. The controller is mounted on the belt conveyor drive motor and controls and adjusts the speed of the drive motor based on the instantaneous material flow value, thereby adjusting the conveying speed of the belt.

3. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 2, characterized in that... The material weighing device also includes a weight-reducing groove and a buffer spring. Two sets of buffer springs are placed on the other side of the weighing plate. Each set of buffer springs consists of five buffer springs. The roller bracket is placed on the buffer springs. There are two roller brackets, and the two roller brackets and the two sets of buffer springs correspond one-to-one. Weight-reducing grooves are correspondingly opened on the side plates of the roller bracket. The two ends of the main roller are rotatably connected to the side plates of the roller bracket through bearings. The two ends of the auxiliary roller are rotatably connected to the side plates of the roller bracket through bearings. The auxiliary roller has a cylindrical structure, and the diameter of the auxiliary roller gradually increases from the middle to both ends. The diameter of the auxiliary roller is smaller than the diameter of the main roller.

4. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 1, characterized in that... There are two telescopic supports, which are located near both ends of the weighing plate to provide stable support for the weighing plate. They can also extend and retract according to changes in the load on the weighing plate to avoid compression, deformation, and damage.

5. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 1, characterized in that... The weighing plate has corresponding clearance slots on both sides, and the clearance slots are located in the middle of the weighing plate. The clearance slots are isosceles trapezoidal structures, which can reduce the weight of the weighing plate and reduce the weighing base.

6. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 1, characterized in that... The weighing platform is located below the weighing plate. The weighing platform has a hollow structure, and its cross-section gradually decreases from one side connected to the weighing plate to the other side, which can better collect the weight of the material while reducing the weight.

7. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 1, characterized in that... The weight-collecting block is located below the weight-collecting platform. The width of the longitudinal section of the weight-collecting block gradually decreases from one end to seven-eighths of the way down, and remains constant from seven-eighths of the way down to the other end, thus enabling the collection of material weight.

8. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 3, characterized in that... The buffer springs are located above the weighing plate, with two sets of buffer springs close to both ends of the weighing plate. The five buffer springs in the same set are arranged in an X-shape on the weighing plate, which can provide more stable support for the roller bracket and buffer the material when it passes through.

9. The belt speed adjustment method for a belt conveyor based on material flow data according to claim 1, characterized in that... The main idler roller has a cylindrical structure, and its diameter gradually increases from the middle to both ends. It can avoid the conveyor belt, so that the conveyor belt can hold the material for transport and prevent the material from falling off the conveyor belt.

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