How to repair electric hoist
The accelerator was too loud Poor lubrication, excessive wear of gear, excessive teeth clearance, damaged gear and damaged bearing. 5, the motor worries the hum The power supply and the electrical motor are not good, the ac contacts are not good. Electric gourd is a kind of small lifting device that is installed on the crane, the skycar and the gantry crane. Mainly used in ascension, with moving, loading and unloading, clog tank inversion welding, etc., such as a variety of large and medium-sized concrete, steel structure and mechanical equipment installation and moving, construction and installation company, factories and mines, civil engineering and construction engineering and bridge construction, electric power, shipbuilding, automobile manufacturing, construction, Bridges, metallurgy, mining and other infrastructure projects.
I don't know where the problem is, the following question is analyzed, which can be compared to the maintenance: After start-up, the motor cannot lift heavy objects Excessive overload, low voltage, contact bad, the brake wheel and the back cover dress bit dead, the motor lock chamber. The brake is unreliable, the drop distance exceeds the requirement The brake ring is worn, the brake ring is in contact with the rear end cover, the brake surface is oily, the brake ring is loose, the pressure spring is tired, the coupling is run by the shaft or the card dies. The motor temperature rises Overload is used, the operation is too frequent, the brake clearance is too small, the brake ring is completely off when running, the equivalent load
break the limit of the fire 6: whether the control line of the receiver of the remote control is broken or shed I did not explain the details of the details of the information
There are several reasons for this: 1: the ascending contactor is broken 2: the line of control falls off. 3: at the upper limit (limit) 4: the remote control "upper" button and the circuit board have impurities
CD MD is the difference between single speed and double speed, the circuit is very simple, general electric block diagram is very simple, I do the design, half a day to a pile of figure, two contactor main circuit is simple, open, control circuit, is the interlocking contactor, quick, quick jiang, slow rise and slow drop, two speed can rise if MD gourd, basic rule out the problem of main contactor, should is the control circuit of the problem, either a remote control, either inside the electrical box control circuit, broken after the main contactor firearms, hoisting motor before
