crane wheel repairness

How to Repair Problems with Crane Wheels

Crane wheel is an accessory on the crane. Its main function is to lift heavy objects vertically and horizontally within a certain range. It is also called crane wheel, crane traveling wheel, and crane rail wheel. It is a type of wheel forgings.

Crane wheelforgings turn the crawler tracks and traveling bracket parts of the traveling mechanism into a wheeled chassis, which reduces the damage to the road surface and belongs to material handling machinery. The working characteristic of the crane wheel is intermittent movement, that is, the mobile work of picking up materials, transporting, unloading and other actions in a working cycle. With the development and use of cranes in the market, they are becoming more and more widely used. The requirements for crane wheel forgings are becoming more and more stringent, requiring high operating stability, large lifting and load-bearing movement, and the ability to “walk” within a specific range.

The horizontal deflection value of the wheel of the crane operating mechanism is an important technical parameter of the crane, the deviation value will cause the gnawing rail, increase the operating resistance, produce vibration and noise, exacerbate the wear of the track and the wheel, and greatly reduce the service life of the crane, so all kinds of crane manufacturing technical conditions should specify the allowable value of the wheel horizontal deflection.

Generally, it is more objective to judge the severity of rail gnawing based on the amount of wear on the crane wheel rim. If the rim wear amount is greater than 1mm, it is a serious rail gnawing and must be repaired. Repair reference is as follows.

1. Tapered roller bearing clearance should be the same

2. Reduce the wheel diameter difference: when the diameter difference of a pair of active wheels exceeds 0.2% of its diameter, and the passive wheel exceeds 0.5%, it should be reprocessed into the same basic size, and the diameter difference between the active wheel and the passive wheel should not exceed 3㎜.

3. Adjustment of crane wheel span, diagonal and parity difference: the deviation of wheel span and diagonal should not be greater than 7mm; The deviation of wheel span and diagonal should not be large ±3mm, and the wheel alignment difference should not exceed 2mm. The adjustment can be taken to reduce the spacing ring of the wheel bearing on one side and increase the other side accordingly to make the wheel move. Or expand the bolt hole for mounting the bearing box on the end beam change plate, and move the positioning key to adjust the span, diagonal and parity difference of the wheel.

4. The adjustment of the transmission mechanism of the truck: the bridge crane driven separately, the bearing and brake of the two groups of driving mechanism should be adjusted to the same degree of tightness. If the reducer and coupling transmission parts are replaced, both sides should be replaced at the same time. The motors of the two carts should be of the same model and with the same parameters.

Focusing on rail systems for more than 20 years, Glory Rail has very rich experience in wheel maintenance and replacement. Crane rails and wheels are the basis of crane operation and are the most directly worn and consumed parts. We can customize wheels of various sizes according to your drawings. If you don’t have the exact wheel drawing, our engineers will propose a customized solution according to your usage.