Supply of 1-32 tons single girder crane motor

Our large supply of single-girder crane motor: main lifting ZD series 0.8-18.5KW, run ZDY series 0.2-3.0KW, run YSE series 0.8-3.0KW soft drive motor. The product quality and reliable, stable operation, easy installation. Welcome to inquire. Structure principle: mainly by the stator, the rotor cone, compression springs, front cover, back cover, fan brake wheel, brake ring, composition, wherein the tapered rotor, a truncated cone at its ends out of a small diameter end and a large diameter end of the rotor shaft, at the small diameter end of the rotor shaft provided with a compression spring, and axial displacement, while the brake ring and the fan would produce the same braking wheel axial displacement, to achieve with this brake function tapered Motors - model representation ZDY11-4 0.8KW ZD, ZDY representatives conical rotor brake three-phase asynchronous motor; the first digit represents the frame size; the second digit represents the core length; the third digit represents the number of motor poles number; the fourth digit represents motor power (KW). Tapered Motors - Causes and analysis of [a] common fault winding serious overheating. (A) set. The air gap between the rotor is too large, no-load current increases. Due to the conical rotor of the motor with the rotor ship gas in addition to the relative position is changed due to the impact of processing accuracy, the assembly shims to adjust the air in addition to more air gap greatly exceed the design value, the no-load current is increased, resulting in increased load losses. (B) of the stator eccentricity of the motor running light friction, motor noise and perturbation cone rotor motors assembled, test switch often hear an abnormal noise or screams. The reason for this can be divided into electromagnetic noise, mechanical noise and aerodynamic noise. (1) There are several reasons for electromagnetic noise ① tooth harmonic is too large, the stator core vibration ② groove mismatch. ③ gas jump eccentric. (2) why mechanical noise generated by the motor rotor ① equipment: balance or fan ≈4 jog wheel balancing technology not to make light friction power hungry runtime. ② bearing noise. ③ scheduled turn to rub domain convolution processing different rotor shaft at both ends oil caps. ④ front cover bearing housing provision within the heart of vibration and noise. ⑤ bearing Taiwan valid long enough to be spline grooves arc damage, resulting in dislocation of the bearing inner ring when the rotor movement. ⑦ brake ring, brake lining material generally does not meet the requirements, or rear end cover too hard about the casting material. ⑧ bearing sets with tight rotor axial movement difficulties. [Two] motor start-up difficulties with load speed lower than the amount of positioning cone rotor motor is powered up, start-up difficulties arise with a load or speed rating than the lower, it can be divided into the following two cases (1) or no-load Starting reason for the difficulty ① brake ring and brake surface rust, when energized by the axial magnetic force of the brake drum tied. ② power cable is too thin to make the line too much pressure drop, and lead wires connected to the motor terminal voltage is lower than the rated voltage 85 or a partial coil winding wire is incorrect. ③ spring pressure is too great, causing the magnetic pull can not overcome the spring pressure. ④ rotor and the stator core during the operation phase rub. (2) difficult start when the load or speed rating lower than the ① motor load is too large, more than 125 times the rated load. ② starting torque is too low, generally conical motor starting torque lkW at least two times the rated torque song, lkW for at least 2.5 to 3. O times. ③ cracked rotor bar or end ring cracking, the motor output is not enough. Si Pu cone rotor motors move nowadays, when the stator is passed through after the three-phase alternating current, in addition to generating rotor rotational torque, but at the same time produce an axial magnetic pull. In the axial magnetic force of the rotor gram packets spring pressure, the brake fan on the rear wheel brake is disengaged cover ring, the motor will rotate. Axial magnetic force when power disappears under the action of the spring pressure, cover the brake after the brake wheel brake tight. [Three] main reason for the decline in motor brake (I) brake ring wear, resulting in brake wheel and brake surface gap is too large. (2) the spring pressure is too small or the pressure spring fatigue (3) brake ring loose. Moisture or oil. (4) The brake ring and tapered rear end cover bad. (5) cover brake surface machining coarse. (6) The brake wheel lock nut end face of the rear end of the plane and not perpendicular to the axis, the motor braking force offset. Reason and analysis above are conical rotor motor Common Faults