Single-Rope Winding Mine Hoist (Structural Overview) and Common Fault Diagnosis and Troubleshooting

Release time :

07 Nov,2025

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The speed of a permanent-magnet synchronous motor is determined by the frequency and remains stable and reliable, regardless of fluctuations in load or voltage.

Single-Rope Winding Mine Hoist (Structural Overview) and Common Fault Diagnosis and Troubleshooting

Structural features

● Key components of the elevator, such as the drum and main shaft, undergo fatigue life calculations to ensure greater safety and reliability.

● The main shaft of the hoist employs a unique material formulation and forging process, ensuring fine-grained microstructure and meeting the mechanical performance requirements of the shaft.

● Depending on site requirements, the roll-up mechanisms come in various structures, including integral, two-lobed, and four-lobed designs.

● Steel rope groove or plastic lining structure.

● Spiral rope groove or parallel zigzag rope groove structure.

Analysis of Main Faults in Single-Rope Hoists:

1. Abnormal noises from the equipment are commonly heard in the drum area, characterized by periodic sounds—particularly pronounced on the side of the traveling drum in single-rope winding hoists.

You can check from the following aspects:

① Check the lubrication condition of the copper tile area and ensure there is sufficient lubricant.

② Check whether the thickness of the adjustment shim between the copper tile and the roller support is appropriate; if not, adjust it accordingly.

③ Check inside the drum for any loose bolts; if any are found loose, tighten them.

④ Check the inside of the drum for any weld cracks. If any cracks are found, they must be repaired.

2. Cracking of the connecting plates at the joint between the drum shell and the two half-cases.

① Pay particular attention to whether there are any gaps at the joint surfaces of the two half cylinders. If gaps are found, they must be addressed immediately.

(If the gap is evenly distributed along the inner and outer surfaces of the cylindrical shell, thin steel plates can be inserted into the gap from the outside and securely fastened.)

If the gap along the shell’s inner and outer surfaces is uneven, it’s usually due to tight contact on the outer side, creating the illusion of a snug fit. You can drive rivets along the joint seam from the outside and secure them reliably.

② The bolts between the two half-cylinders should be tightened to the torque specified in the relevant standards—do not overtighten them.

③ Drill crack-arrest holes at both ends of the crack; a diameter of around 8 is recommended.

④ Attach the reinforcing plate by spot welding to the connecting plate. Use carbon arc gouging to thoroughly remove the cracks from the shell, then proceed with welding the shell.

⑤ If the connecting plate is severely cracked, it can be replaced entirely.

3. Abnormal wear of equipment—wear on the sheave and friction wheel liners: Check whether the diameter difference at the bottom of the liner rope grooves is excessive; if so, perform rope-groove turning work. It is essential to ensure that the tension on the steel wire ropes becomes more uniform.

4. Special attention points for the critical braking system

● The brake shoes must be free of oil and grease.

● The brake shoe clearance exceeding the limit should be adjusted promptly.

● The brake shoe dimensions should be appropriate to prevent insufficient clamping or movement.

● Oil leaks from the brake should be addressed promptly.

● When inspecting the brake, pay attention to the status of the spiral switch.

● The brake disc, if excessively rough or severely out of round, should be addressed.

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