As we all know, the group hoist electric hoist is easy to use, saves manpower, and helps to improve work efficiency. Therefore, in view of the above points, electric hoist has been widely used in all walks of life, when we use electric hoist daily, we always encounter imagination For all kinds of problems, let's analyze the reasons why some functions do not work properly when the electric hoist is restarted.
Most cases are mainly due to the fact that the electric hoist is not connected to the rated working voltage and cannot work. There are generally three situations:
1. The voltage of the motor end of the group hoist electric hoist is more than 10% lower than the rated voltage, the starting torque of the motor is too small, so that the group hoist electric hoist cannot lift the goods, but the group hoist electric hoist cannot work. Use a multimeter during inspection (use: Measure the voltage, current and resistance) or a voltmeter to measure the input voltage of the motor. If the voltage is too low to start the motor, you need to wait for the system voltage to return to normal before using the electric hoist. Group crane electric hoist is generally installed on single beam crane, bridge crane, gantry crane, hanging crane. With a little modification, it can also be used as a winch. Therefore, it is a necessary machine for improving labor efficiency and working conditions. It is widely used, but there are few professionals who can correctly operate the group hoist electric hoist. It is recommended that you know more about the group hoist electric hoist and then make better use of various electric hoists in various fields. Sometimes the voltage of the group hoist electric hoist motor is normal, but the group hoist electric hoist does not work, which needs to be considered for other reasons.
2. Whether the power supply system supplies power to the electric hoist power supply, generally use a test pencil to test, if there is no power supply, wait for the power to work;
3. Damage to the main and control circuits of the group hoist electric hoist, broken lines or poor contact will also prevent the group hoist electric hoist motor from being energized. If this happens to the group hoist electric hoist, the main and control circuits need to be repaired. In order to prevent the main and control circuit from supplying the three-phase motor with a lack of phase and burning the motor, or the group hoist electric hoist motor is suddenly powered up and causing harm, the group hoist electric hoist motor must be disconnected from the power line. Send power to the main and control circuits, then jog the start and stop switches, inspect and analyze the working conditions of the control electrical appliances and lines, repair or replace the problematic electrical appliances or lines, and confirm that the main and control circuits are not faulty before restarting Test drive;
In addition, it is strictly forbidden to overload the use of electric electric hoists in production. When the goods are overloaded too much, the electric hoist cannot move the goods, and the motor only emits a hum; the sound does not run. In serious cases, the motor will be burned and even an accident will occur. Shut down to lighten the goods and make the electric hoist work at rated power (referring to how much work the object does in a unit of time). Electric hoist is generally installed on single beam crane, bridge crane, gantry crane, hanging crane. With a little modification, it can also be used as a winch. Therefore, it is a necessary machine for improving labor efficiency and working conditions. Very widely used.