The installation and maintenance of crane wheels

 The travelling wheel’s horizontal deflection value of the crane installation and maintenance operation mechanism is an important technical parameter of the crane. Excessive deflection value will cause the track to run, increase the running resistance, generate vibration and noise, increase the wear of the track and crane wheels, and greatly reduce the use life of crane wheels. So all kinds of crane wheel manufacturing technical conditions must stipulate the allowable value for wheel horizontal deflection.

crane wheel

1. Wear of crane wheel tread:

When the wear of the crane wheel tread exceeds 15% of the original thickness, it should be replaced with a new one. If it does not exceed this value, it can be re-turned and heat-treated. The diameter of the crane wheel should be within the tolerance range, and the surface quenching hardness HB300 ~ 500. The thickness of the quenching layer for the diameter of the crane wheel greater than Φ400mm should be greater than 20mm; when it is less than Φ400mm, the thickness of the quenching layer should not be less than 15mm.

 

2. The diameter deviation of two matching crane wheels:

The diameter deviation of the driving wheel should not exceed 0.1% of the nominal diameter, and the driven wheel should not exceed 0.2%. The diameter deviation of the electric hoist wheel should not exceed 1% of the nominal diameter.

3. Flange wear, breakage and deformation:

Wheel flange wear amount reaches 50% of the original thickness or the broken area exceeds 30mm2 should be scrapped, and the bending thickness of the wheel flange is 20% of the original thickness should be scrapped;

4. Crane wheel crack:

Crane wheels should be scrapped if cracks are found;

5. Ovality of tread:

The ellipticity of the tread of the crane wheel reaches 1mm should be scrapped;

6. Wheel group assembly:

The wheel assembly for crane installation and maintenance should be able to turn flexibly by hand. Several wheels installed on the same balance frame are in the same vertical plane, and the allowable deviation is 1mm.

If you need more crane wheel information, contact us now!


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