Causes of twisting and shaking of bridge-type single-girder cranes - Zarządzanie projektami - teoria i praktyka



28 окт 2021, 4:59
After a period of use of the bridge-type single-girder crane, some users may find that the crane wobbles when it starts or stops. This situation will have a negative impact on the crane equipment. So what is the reason for the twisting of the bridge-type single-girder crane? What impact will it have on lifting cranes? I will give you a brief introduction Crane for sale.

The torsion of single beam crane should be solved in time

The reasons for the torsion of the bridge-type single-girder crane may be as follows:

1. There is a wear gap between the crane motor and the reducer. For example, the gear of the gear coupling and the gear of the reducer and its combination key are loose, and the gap between the connecting bolt and the hole of the drive shaft is worn out;

2. The crane wheel coupling key is loose;

3. A certain wheel of the crane does not rotate well. The reason for this situation is that the backing plate of the fixed wheel bearing seat is not correct, which makes the bearing clamping inflexible, and the wheel stops first when stopping;

4. The braking torques of the brakes on both sides of the crane that are driven separately are inconsistent. When parking, one brake wheel has stopped, and the other is still rotating.

5. For cranes driven separately, the parameters of the two motors are not matched, resulting in asynchrony.

6. The tightness of the two brakes is too different.

If the overhead single-girder crane appears torsion, it may cause the following effects on the equipment:

1. The main beam (load-bearing beam) of the crane is deformed. Because one side of the bridge is leading at the same time, one side is lagging, and at the moment of rebound, the leading side is lagging, and the lagging side is leading. This oscillates back and forth and twists, causing plastic deformation or cracking at the junction of the bridge and the beam.

2. The transmission and brake parts are worn. Because the crane is twisted as a whole, the wheels on both sides will rotate accordingly, which will cause the transmission and braking parts of the crane to be repeatedly impacted and accelerate the wear of the combined parts such as gears and keys. Severe twisting also has the risk of twisting the drive shaft.

If the bridge-type single-girder crane has a wobble problem during use, it must be resolved in time according to the cause, and production operations can only be carried out after ensuring normal operation to avoid greater consequences.

Causes of twisting and shaking of bridge-type single-girder cranes
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