YTLEJ(IPW23)Torque Three一Phase Asynchronous Motor for Tower Crane Amplitude Mechanism

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Overview


This series motor adopts modular design. It consists of four parts: torque motor, eddy current regulator, electromagnetic brake and fan, which can be flexibly configured to
meet different customer demands. With introduction of a new special brake, it can cater for outdoor and high-altitude operations. The product has reached the international
advanced level with the patent for utility model. It is mainly used as a trolley speed-change gear for tower crane as well as other mechanical equipments requiring for
constant power and stepless speed regulation.

FeaturesConstant tension and linear speed, stepless speed regulation, frequent starting;
Special eddy current regulator for the motor realizes smooth startup or stop;
New special brake (national utility model ZL201120188173.2, ZL2011201881643). This ensures fast braking and accurate positioning with higher safety and reliability
Besides, manual release is possible;
The rotor is made of copper alloy with better mechanical properties and mechanical bearing capacity in the domestic industry;
Spindle is hot forged by alloy structural steel,with good overall mechanical perlormancc;
A thermal protection component is buried into the in stator winding, making motor more safer and reliable;
Compact structure, small volume, lightweight as well as high reliability, so itfeatures easy maintenance and repair.




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Q:The difference between AC motor frequency conversion speed regulation and voltage regulation speed regulation
Voltage regulation: smoothness is good, speed range is narrow, can not be used for constant load speed regulation.
Q:What's the difference between a DC motor and an AC motor?
A direct current motor is a magnetic field that does not move; a conductor moves in a magnetic field; an alternating current motor rotates in a magnetic field, and the conductor does not moveDC motor consists of stator winding and rotor winding of stator winding. The magnetic field is produced. When the direct current. The stator windings produce fixed polarity magnetic field. The rotor energizing force in the magnetic field. So the rotor in the magnetic field force is rotating. The DC motor structure is complicated. The cost is high.
Q:Types of AC motor speed control and the difference between them
Frequency conversion speed, which is currently the most commonly used control methods, can achieve stepless speed regulation, the semiconductor converter (or circuit) to change the power supply frequency of the motor, the power (frequency =50HZ) change into the required frequency achieve the purpose of speed, or the above formula: =60f/ magnetic pole synchronous AC motor speed. The frequency of "F", the speed will change.
Q:Speed control method of AC motor
The specific AC speed regulating device has:Efficient speed regulation includes:Changing pole logarithmic speed regulation -- squirrel cage motorSquirrel cage type motor controlled by frequency conversionCascade speed control - winding motorSynchronous motor of commutator motorInefficient speed control methods include:Stator voltage regulating speed governing squirrel cage motorSpeed control of electromagnetic slip clutch -- squirrel cage motorSpeed control of rotor series resistance winding motor
Q:How to connect the AC motor?
Triangle: above line three root three terminals connected with three-phase power supply, the three terminals should pay attention to the connection, the end of U phase U2 wire and V head end V1 shorted end of V phase V2 wire and W head end W1 shorted end of W phase W2 wire U and U1 head end short circuit.
Q:Is the single-phase carbon brush motor a direct current motor or an AC motor?
The role of the motor is to change the current direction of the DC motor and AC motor, the DC motor is to change the rotor's conductive coil, thereby changing the rotor magnetic pole. Thereby changing the motion of the motor. The carbon brush is used for motor commutator or slip ring, as sliding contact body import and export current, its thermal conductivity, and good lubrication performance, and has certain mechanical strength and direction of the spark of instinct. Almost all motors use carbon brush, which is an important component of the motor.
Q:What are the advantages and disadvantages of AC and DC motors?
AC motor without carbon brush and commutator, maintenance free, strong and wide application, but the characteristics to achieve performance equivalent to DC motor to be used to achieve complex control technology. AC motor is divided into two categories: asynchronous motor and synchronous motor. Asynchronous motor is divided into single-phase asynchronous motor, two-phase asynchronous motor and three-phase asynchronous motor according to the number of stator phases. The three-phase asynchronous motor is simple in structure, reliable in operation and low in cost.
Q:How to speed the AC motor?
There are about three speed regulation methodsOne is to use the frequency converter to change the frequency of the power supply.The two is to change the number of poles of the motor (the motor itself has the conditions).Three is the slip speed regulator. This method is not to change the motor speed. Instead, it changes the clutch of the slip clutch that is connected with the motor shaft, and changes the speed of the clutch output shaft to adjust speed.
Q:Isn't the starting winding symmetrical? If it's symmetrical, it's also an alternating pulsating magnetic field, how can you drive the rotor?
Because the magnetic field will not rotate (single phase winding and three-phase current phase difference of 120 DEG to produce a rotating magnetic field, so the starting winding), the working principle is in the starting winding current is generated through nearly 90 degrees of the magnetic field produced by a capacitor, the rotating magnetic field.
Q:Common problems of AC motors
Hazard: cause the surface of motor bearing or ball to be eroded, the shape of micro hole is changed, the performance of bearing is deteriorated, and the friction loss and heating increase

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