Belt conveyor tensioning device based on variable torque device

Abstract

The utility model discloses a belt conveyor tensioning device based on a variable torque device. Comprising a disc type magnetorheological fluid variable torque device installed between a roller and a magnetic current motor through a main shaft, the disc type magnetorheological fluid variable torque device is fixedly connected with the main shaft through a coupler, a controller is installed between the disc type magnetorheological fluid variable torque device and the coupler, and a brake is installed between the coupler and the magnetic current motor. The tail end of the magnetic current motor is provided with a frequency converter. The tensioning device adopting the variable torque technology can be applied to various different environments and different types of conveying loads, the requirements for heavy-load, long-distance or high-speed conveying are met, the tension can be adjusted according to actual requirements, tensioning and buffering protection are achieved, high flexibility and adaptability are provided, a conveying belt is prevented from loosening or being excessively tensioned, and the service life of the conveying belt is prolonged. The service life of equipment is obviously prolonged.

Description

Technical Field

[0001] The utility model relates to a tensioning device for a belt conveyor, in particular to a tensioning device for a belt conveyor based on a variable torque device. Background Art

[0002] During the process of transporting various materials by a belt conveyor, due to changes in load and environmental factors, it is often necessary to adjust the tension of the conveyor belt to maintain stable and efficient transportation. Existing tensioning devices mostly adopt fixed or simple mechanical adjustment methods. These methods often cannot respond to environmental changes in real time, have low adaptability, are easily restricted by conditions, and at the same time, it is too cumbersome and troublesome to change the device to adapt to environmental changes, resulting in reduced conveying efficiency and increased equipment wear. It is impossible to achieve precise control of the tensioning force, affecting the stability and operating efficiency of the conveyor belt; the reaction speed is slow, unable to respond in time to load changes or changes in operating conditions, unable to adjust quickly, affecting production efficiency and equipment life. It is not concise enough, and more manpower and time are required for maintenance and adjustment. This may increase the downtime and maintenance costs of the equipment and reduce production efficiency. Content of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a tensioning device for a belt conveyor based on a variable torque device, which can automatically adapt to changes in environmental conditions according to the real-time working state of the conveyor belt, adjust the tension, and achieve improved conveying efficiency, equipment life, and process protection.

[0004] To achieve the above purpose, the tensioning device for a belt conveyor based on a variable torque device includes a belt conveyor transport trolley connected to a drum through a traction rope, a disc-type magnetorheological fluid variable torque device installed between the drum and a magneto-rheological fluid motor through a main shaft, the disc-type magnetorheological fluid variable torque device is fixedly connected to the main shaft through a coupling, a controller is installed between the disc-type magnetorheological fluid variable torque device and the coupling, a brake is installed between the coupling and the magneto-rheological fluid motor, and an inverter is installed at the tail end of the magneto-rheological fluid motor.

[0005] Further, the disc-type magnetorheological fluid variable torque device is composed of a torque sensor, magnetorheological fluid, a brake disc, and a housing; the torque sensor monitors the torque output of the main shaft, and the brake disc rotates with the main shaft, driving the magnetorheological fluid to flow in the magnetic field.

[0006] Further, the controller includes a central processing unit, an input module, an output module, a power supply module, a communication interface, and a feedback system. The input module of the controller receives the torque value converted into an electrical signal by the torque sensor. The central processing unit of the controller adjusts the magnetic field strength according to the received signal, outputs a control signal through the output module to change the viscosity of the magnetorheological fluid, thereby adjusting the resistance of the brake disc, and further adjusting the disc-type magnetorheological fluid variable torque device to change the torque of the main shaft.

[0007] Furthermore, the central processing unit adopts a 1200 series PLC, which has powerful computing and control capabilities and can flexibly handle complex automation tasks, ensuring the long-term reliable operation of the system and reducing the maintenance cost.

[0008] Furthermore, the feedback system ensures closed-loop control and precise adjustment by monitoring the actual torque and transmitting the data back to the central processing unit in the controller.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. The device serves as a feedback mechanism in the belt conveyor to prevent over-tensioning or slackening, and acts as a backup power or resistance to limit the rotation of the main shaft and avoid reverse rotation, thus protecting the safety of operators and equipment.

[0011] 2. The tensioning device adopting variable torque technology can be applied to various different environments and different types of conveying loads, including heavy loads, long-distance or high-speed conveying requirements.

[0012] 3. It can adapt to environmental changes in a timely manner according to the real-time operating conditions, receive signals, and realize the adjustment of torque output, which is convenient and fast, has a simple structure, is easy to install and disassemble, and is convenient for inspection, cleaning and lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the structure of the disc type magnetorheological fluid variable torque device;

[0015] In the figure: 1. Drum, 2. Towing rope, 3. Disc type magnetorheological fluid variable torque device, 4. Controller, 5. Coupling, 6. Brake, 7. Main shaft, 8. Magneto-fluid motor, 9. Frequency converter, 10. Belt conveyor transport trolley, 11. Torque sensor, 12. Magnetorheological fluid, 13. Brake disc, 14. Shell. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes the present utility model with reference to the drawings.

[0017] As Figure 1As shown in the figure, the belt conveyor tensioning device based on a variable torque device includes a belt conveyor transport trolley 10 connected to a drum 1 through a traction rope 2, and a disc-type magnetorheological fluid variable torque device 3 installed between the drum 1 and a magnetorheological fluid motor 8 through a main shaft 7. The disc-type magnetorheological fluid variable torque device 3 is fixedly connected to the main shaft 7 through a coupling 5. A controller 4 is installed between the disc-type magnetorheological fluid variable torque device 3 and the coupling 5. A brake 6 is installed between the coupling 5 and the magnetorheological fluid motor 8. A frequency converter 9 is installed at the tail end of the magnetorheological fluid motor 8.

[0018] Furthermore, the disc-type magnetorheological fluid variable torque device 3 is composed of a torque sensor 11, magnetorheological fluid 12, a brake disc 13, and a housing 14 connected together. The torque sensor 11 monitors the torque output of the main shaft 7. The brake disc 13 rotates with the main shaft 7, driving the magnetorheological fluid 12 to flow in a magnetic field.

[0019] The function of the disc-type magnetorheological fluid variable torque device 3 is to protect the equipment when needed. By monitoring the operating state in real time and making corresponding adjustments as required; as a feedback mechanism, according to the signal feedback of the torque sensor 11 to the controller 4 and the frequency converter 9, the torque output can be accurately adjusted, effectively preventing over-tensioning or slack, thereby extending the service life of the equipment and preventing dangerous situations during unexpected operation or overloading. When the system becomes loose or fails, the torque sensor 11 receives the signal and feeds it back to the controller 4. The controller 4 issues an alarm and a power cut-off command according to the received signal, and the brake 6 stops the main shaft 7 and the drum 2 from working, preventing the equipment from getting out of control or being damaged.

[0020] Furthermore, the controller 4 includes a central processing unit, an input module, an output module, a power supply module, a communication interface, and a feedback system.

[0021] The input module of the controller 4 receives the torque value converted into an electrical signal by the torque sensor 11. The central processor of the controller 4 adjusts the magnetic field strength according to the received signal, outputs a control signal through the output module to change the viscosity of the magnetorheological fluid 12, thereby adjusting the resistance of the brake disc 13, and further adjusting the disc-type magnetorheological fluid variable torque device 3 to change the torque of the main shaft 7. That is, according to the load changes and operating conditions of the magneto-fluid motor 8 and the belt conveyor trolley 10, the braking force is dynamically adjusted to ensure that the system maintains a stable operating speed and accurate material transportation. The controller 4 adjusts the output torque by receiving external and internal input signals to adapt to different working loads and operating conditions. Especially when the load of the belt conveyor trolley 10 is too large or the motor lacks traction support, as a buffer, it can provide additional power or adjust the resistance to balance the operation of the main shaft 7. At the same time, the brake 6 plays a role by applying a braking force to limit or control the rotation of the main shaft 7, avoiding the reverse power generation of the magneto-fluid motor 8 caused by the reverse rotation of the main shaft 7, protecting the frequency converter 9, and ensuring that measures can be taken in time in case of an accident to prevent the occurrence of accidents and protect the equipment and personnel from damage or loss.

[0022] Furthermore, the central processor adopts a 1200 series PLC, which has powerful computing and control capabilities and can flexibly handle complex automation tasks. It ensures the long-term reliable operation of the system and reduces the maintenance cost.

[0023] Furthermore, the feedback system ensures closed-loop control and precise adjustment by monitoring the actual torque and transmitting the data back to the central processor in the controller 4.

[0024] The working principle of the belt conveyor tensioning device based on the variable torque device is as follows: When the conveyor starts, the magneto-rheological fluid motor 8 provides power to drive the main shaft 7 to drive the roller 1, causing the belt conveyor transport trolley 10 to start moving. The tight fit of the components ensures the smooth operation of the conveyor belt and efficient material transportation. The stable output of the magneto-rheological fluid motor 8, the reliable connection between the main shaft 7 and the roller 1, the real-time protection of the disc-type magneto-rheological fluid variable torque device 3, and the transport vehicle together constitute an efficient and stable conveyor line. At this time, the torque sensor 11 immediately starts to monitor the torque output of the main shaft 7, which is used as a direct indicator for evaluating the conveyor belt tension. The brake disc 13 in the disc-type magneto-rheological fluid variable torque device 3 rotates with the main shaft 7, driving the magneto-rheological fluid 12 to flow in the magnetic field. When the material starts to be loaded onto the belt conveyor transport trolley 10, the increase in the load weight will affect the torque value. The torque sensor 11 measures the torque and converts it into an electrical signal, which is then transmitted to the controller 4. According to these signals, the magnetic field strength is adjusted to change the viscosity of the magneto-rheological fluid 12, thereby adjusting the resistance of the brake disc 13 and comparing it with the preset value to determine whether it is necessary to adjust the disc-type magneto-rheological fluid variable torque device 3 to change the torque of the main shaft 7. If the torque reading indicates that the tension is too large, as a buffer, the controller 4 controls the device to loosen; otherwise, it increases. At the same time, the brake 6 plays a role by applying a braking force to limit or control the rotation of the main shaft 7, preventing the main shaft 7 from reversing and causing the magneto-rheological fluid motor 8 to generate electricity in reverse, thereby protecting the frequency converter 9. The adjustment process is continuous and real-time, ensuring that the conveyor belt operates under the ideal tension to avoid slippage or jumping. Factors such as the conveying speed, belt length, and ambient temperature are also considered to comprehensively determine the optimal torque state. In addition, any sudden load change, such as material accumulation or sudden unloading, will be quickly responded to and adjusted by the system to maintain the stable operation of the conveyor belt, balancing the main shaft as backup power or resistance to protect the safety of operators and equipment.

[0025] The above embodiments are merely descriptions of the preferred embodiments of the invention, and do not limit the scope of the invention. Without departing from the design spirit of the invention, various deformations and improvements made by those skilled in the relevant art to the invention should all be included in the protection scope determined by the claims of the invention.

Claims

1. A belt conveyor tensioning device based on a variable torque device, characterized in that: The invention comprises a belt conveyor transport trolley (10) connected to a roller (1) via a traction rope (2); a disc-type magnetorheological fluid variable torque device (3) installed between the roller (1) and a magneto-fluid motor (8) via a main shaft (7); the disc-type magnetorheological fluid variable torque device (3) is connected and fixed to the main shaft (7) via a coupling (5); a controller (4) is installed between the disc-type magnetorheological fluid variable torque device (3) and the coupling (5); a brake (6) is installed between the coupling (5) and the magneto-fluid motor (8); and a frequency converter (9) is installed at the tail end of the magneto-fluid motor (8).

2. A belt conveyor tensioning device based on a variable torque device according to claim 1, characterized in that: The disc-type magnetorheological fluid variable torque device (3) is composed of a torque sensor (11), a magnetorheological fluid (12), a brake disc (13) and a housing (14) connected together; the torque sensor (11) monitors the torque output of the main shaft (7), and the brake disc (13) rotates with the main shaft (7) to drive the magnetorheological fluid (12) to flow in the magnetic field.

3. A belt conveyor tensioning device based on a variable torque device according to claim 2, characterized in that: The controller (4) comprises a central processing unit, an input module, an output module, a power module, a communication interface and a feedback system. The input module of the controller (4) receives a torque value converted into an electrical signal by a torque sensor (11). The central processing unit of the controller (4) adjusts the magnetic field strength according to the received signal and outputs a control signal through the output module to change the viscosity of the magnetorheological fluid (12), thereby adjusting the resistance of the brake disc (13), and further adjusting the disc-type magnetorheological fluid variable torque device (3) to change the torque of the main shaft (7).

4. A belt conveyor tensioning device based on a variable torque device according to claim 3, characterized in that: The central processing unit adopts 1200 series PLC.

5. The belt conveyor tensioning device based on a variable torque device according to claim 3, characterized in that: The feedback system ensures closed-loop control and precise regulation by monitoring the actual torque and transmitting the data back to the central processor in the controller (4).

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