Electromagnetic Single GirderCranesWhat to Pay Attention to During Maintenance?
The primary cause of the danger and the vibration is whether the connecting screws between the main girder and the end girder of the electric single-beam crane are loose. Therefore, it is recommended to opt for variable-speed cranes to compare the safety and stability of single-beam cranes, as they also have a lower failure rate.
　　２、Electric HoistAre the gaps between the cars within the normal range? During daily single girder walking inspections, it is often found that some cranes have excessively large gaps with the main girder I-beams.
Due to the elevator being hoisted on a truck by an I-beam, it cannot be lifted if the gap is wider than the width of the I-beam. This results in the entire bucket falling, with predictable consequences. The reason for the excessive distance between the trolley and the winch is generally long-term overloading of the trolley, while a long-term inclined crane only contributes to the excessive distance between the trolleys. The solution to the excessive distance between the trolley and the crane is to replace the trolley.
Regardless of the stability of the single-beam crane motor, incidents of motor falling are more frequent than those of hitting people.
Electric motors (crane motors) are typically horizontal. The vibration from single-beam transmission is the main cause of the drop, leading to the loosening of fixed blocks. Shandong Electrical's method of loading and unloading for single-beam cranes is worth learning. The first two aspects involve installing anti-fall locks on the motor. The anti-fall lock cannot be pulled to the ground when the motor falls. On the other hand, Shandong Electrical's standard configuration for single-beam cranes is variable-speed operation. In this case, the operation of the lifting equipment is very stable with almost no vibration.