How the gourd is repaired

Answer:

Motor produces abnormal noise, should stop immediately, check whether the motor is single-phase operation, or bearing damage, coupling axis is not straight, and the chamber "sweep", these will make the machine has abnormal noise, the noise of the different fault location and high and low and don't sound different, single phase operation, the motor from regular strong and weak "buzzing" sound. When the bearing is damaged, it will be near the bearing, and it will be accompanied by a "whirring". When the shaft of the coupling is not right, or when the motor is slightly swept, the whole motor makes a loud "buzzing" sound, not accompanied by a sharp, shrill sound. In conclusion, according to the noise, the fault should be found, the maintenance of the motor is carried out, the normal performance of the motor is restored, and the use of the gourd is forbidden when the motor failure is not handled.

The electric gourd runs with an abnormal sound Electric hoist a lot of trouble, for example, the control of electrical appliances, motor and reducer, etc appeared fault, is often accompanied by abnormal noise, the noise of the position and height and don't have the difference, with the cause of the problem in different maintenance, want to listen to see more, can make use of, or according to the fault characteristics of noise, determine a sound position, looking for and repairs. (1) the abnormal noise occurred in control circuit, a noise, "hum" is generally contactor failed (such as ac contactor contact discrepant poor contact, voltage grade, magnetic core, CARDS, etc.), to deal with fault contactor for maintenance, must be replaced when unable to repair, after processing, to eliminate the noise.

than the rated voltage of the hoist motor power down more than 10%, motor starting torque is too small, make the hoist lifting goods, and unable to work, check the input voltage of motor is measured with a multimeter or a voltmeter, etc, because of the voltage is too low, truly make motor can't start, shall system voltage return to normal before the use of electric hoist. Sometimes, the voltage of the gourd motor is normal, and the gourd is not working, and this needs to be considered for other reasons, such as: the motor is burnt down, and the electric motor is changed when it is repaired. Gourd long-term need not, poor maintenance of brake wheel and the end cover rust, brake wheel does not open, when starting motor only "hum" sound, turn up, gourd doesn't work. At this point, the brake wheel should be removed and the surface of corrosion is cleaned and then retested. Serious motor chamber, also can make the motor does not rotate, found that this kind of situation, should stop to use, must be for repair or replacement motor, to guarantee the normal work of the gourd. In addition, it is forbidden to use electric hoist overload in production, when the goods excessive overload, hoist crane didn't move the goods, the motor only thrum "hum", instead of running, serious when burning motor, or even cause an accident, should immediately stop at this moment, to reduce the goods, make the gourd work under rated power.

The cause and repair of the failure of electric hoist. After starting switch, the electric gourd does not work properly The main reason is that the gourd is not connected to the rated working voltage, and cannot work, in general there are three kinds of conditions: (1) whether the power supply system is transmitting electricity to the electric block power supply, and the electric power supply system is tested by a test pencil, such as the failure to deliver electricity, and then the work after the transmission. (2) the gourd master and control loop of electrical appliances, circuit disconnection or poor contact, also can make the hoist motor can't electricity, appear this kind of circumstance, need to repair the main, control circuit, maintenance and repair, in order to prevent the main and control circuits to three-phase motor power phase and burned, or hoist motor electric operation, suddenly, must will hoist motor from the power cord to disconnect on the road, only to master and control circuit of electric transmission, then click start and stop switch, check the analysis and control electric circuit working condition, to have a problem electrical equipment or lines for repair or replacement, when confirm the master and control circuit of trouble-free, to reset test;

First, check whether the gourd is overloaded, and overload causes the motor to heat up. If the motor is not overloaded and still hot, check for damage to the motor bearing. It is also necessary to check whether the motor is working in accordance with the regulations, which is also responsible for the heating of the motor. Motor operation, the brake clearance is too small, not completely off, have a great friction, the friction heat also is equivalent to increase the additional load, reduce the motor speed, electrorheological big and fever, should stop working right now, to adjust the brake clearance.