Fault Phenomenon: Zoomlion ZR360 rotary drilling rig a large number of broken wires appear on the main winch wire rope surface, even strand breakage.

Troubleshooting Process:
– Checked rope grooves: drum or sheave grooves severely worn.
– Checked lubrication: wire rope lacks lubricating grease.
– Checked load: prolonged overload operation.
– Checked spooling: tangled rope causing crushing.

Root Cause: The wire rope lacked lubrication for a long time and passed through severely worn sheaves, causing steel wire fatigue and breakage.

Required Parts: Replace main winch wire rope, repair sheave grooves.