Structural characteristics of liquid-viscous soft start device of belt conveyor

Belt conveyor is the most widely used bulk material conveying equipment and an important part of logistics technology equipment. With the rapid development of China's industrial technology, the application of high-power belt conveyors will become more and more extensive. The traditional design theory and rigid transmission

The dynamic (or uncontrollable soft transmission) method has been unable to meet the requirements of actual production. The purpose is, the soft start of large belt conveyor

The dynamic system mainly includes domestic speed regulating hydraulic coupler, liquid viscous soft start, CST system imported from the United States, and variable frequency soft start.

Liquid viscosity controllable transmission device is a new type of device integrating machine, electricity and hydraulics. developed by a university of science and technology

A kind of conveyor that can realize soft start, soft brake, infinitely variable speed, multi-drive balance, automatic overload protection and can prevent

Multifunctional integrated transmission device for motor overspeed when the conveyor is driven downwards. The device can overcome other controllable transmission devices

The disadvantage of the device is that it has the advantages of small structure, high transmission efficiency and long working life. This liquid viscous soft start transmission

The device is mainly composed of mechanical and electronic components such as liquid viscous soft starter, sensor and hydraulic control device. Its basic work

The principle is similar to the CST system.

The theoretical basis of the new controllable transmission device of liquid viscosity is liquid viscosity transmission, which uses liquid

Viscous shear force transmits power and its working principle is based on Newton's law of internal friction. The belt conveyor uses the liquid viscous soft start device to transmit power, which has the following advantages:

1.

Stepless adjustment;

2. It is easy to realize electromechanical-hydraulic integrated closed-loop control, with stable rotational speed and high precision;

3. Easy to realize rotational speed adjustment

remote control and automatic control;

4. It can make the motor start under light load and shorten the impact time of the starting current to the power grid;

5.

When starting a load with large inertia, it can be accelerated slowly to prevent overload of the transmission system;

6. It can automatically limit the transmitted torque

, thus protecting the transmission system;

7. The heat generated when the conveyor starts is absorbed by the cooling oil, which is easy to control.

Temperature, no sparks;

8. The oil film simultaneously starts to lubricate the friction plates, reduces wear and makes the device performance more stable

;

9. By increasing or decreasing the number of master-slave plates, the transmitted power can be changed in a large range, with good versatility and serialization.

High.

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