What should be considered when replacing the drum of a crane?
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On cranes, the drum is one of the components of the lifting mechanism; it is also a common vulnerable part that often requires repair, maintenance, and replacement. If the drum has cracks, severe wear or rust, or if there are any defects that could damage the wire rope, then this drum component should be discarded and replaced with a new one as soon as possible. When replacing the drum of a crane, the following points should be taken into account: 1. The wire rope guide rollers – since these are installed inside the crane’s drum, it is essential to pay attention to their diameter when replacing the drum, so as to prevent them from breaking or being damaged after short use. Generally speaking, when replacing cast steel drums, the diameter of the guide rope is usually smaller, whereas this is often the opposite for cast iron drums. 2. Drum assembly: The new drums replaced for cranes are usually not original components. If issues such as uneven stress on the rope guides, mismatched parts, or installation accuracy that does not meet requirements are detected during assembly, it is necessary to contact the manufacturer promptly to obtain original components. 3. After the replacement, once new reel paper has been installed on the crane, relevant inspections and tests must be carried out to ensure that there are no issues or safety hazards before it can be put into use. Furthermore, if the crane uses an explosion-proof electric hoist, the drum should also be replaced in accordance with relevant requirements.
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