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Frequency conversion winch is one of the key and important protection equipment in mine

 Internet time: 14:07
Variable frequency winch It is one of the key and important protection equipment of the mine. It is widely used in the shaft and inclined shaft hoisting system of coal, nonferrous metal, ferrous metal, non-metallic, chemical and other mines. It is used to lift minerals and materials, equipment and transport personnel. It is the throat of the mine system. In the whole production process, it occupies a very important position. It is not only related to the normal protection of the mine production and production efficiency, but also directly affects the life and property protection of the people going up and down the shaft. Therefore, its electrical drive and control device has been an important research field in the transmission field of various countries. Most of the traditional mine hoists adopt the AC speed regulation system of winding rotor asynchronous motor rotor circuit with series resistance. This system belongs to step speed regulation, small low-speed torque, large slip power, large impact of starting current and shifting current; large vibration in medium and high-speed operation, dangerous and unreliable braking, ineffective treatment of renewable energy, and large amount of electric energy consumption in speed regulation In addition, it not only causes serious waste, but also causes bad working environment and large space noise; in the operation of inclined shaft hoist, the speed regulation is discontinuous, easy to fall off, and the failure rate is high. Moreover, winding motor and resistance belong to non explosion-proof equipment, which do not meet the requirements of sound production.
It is urgent to update the technology of mine hoist. The modern AC speed control system using DSP full digital frequency conversion technology represents the advanced level of mine hoist technology.

 Variable frequency winch

frequency conversion Winch adopts frequency conversion Advantages of control

1. High control precision: the inverter has high control precision, which can make the speed regulation performance of AC motor almost equal to that of DC motor, so as to realize accurate control.
2. High working reliability: the frequency converter adopts power electronic devices with long service life and perfect protection function. When used for hoist control, it has good reliability.
3. The maintenance workload is small, which reduces the work intensity of maintenance personnel.
4. Wide range of speed regulation, belonging to stepless speed regulation, good stability at low speed.
5. The starting torque is large, which can reach more than 2 times, and the given torque is stable at low speed.
6. Energy saving is obvious. When the hoist is in the lifting state, the motor works in the electric state. As the hoist belongs to constant torque load, the proportion of energy saving is the proportion of speed reduction. When the hoist is in the down state, the motor works in the state of power generation, and converts the potential energy into electrical energy.

If the frequency converter uses an energy feedback transformer, the transformer will feed back the power to the grid. A group of endless rope winch after frequency conversion transformation, its energy-saving effect is about 30%, this inverter is energy-saving braking type, if the energy feedback type, its energy-saving effect will be better.

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eighteen billion two hundred and thirty-nine million two hundred and eighteen thousand one hundred and eighty-eight

Mobile phone: 18239218188

Address: intersection of Heqi Avenue and Weishi Road, Qibin District, Hebi City

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