Stopping a tower crane is a downtime for the entire construction project. Let's tell you a real case of how Elektromotors engineers urgently restored a crane motor at a construction site in Tashkent and returned the equipment to work in one day.
Situation
At a construction site in Tashkent, the motor of a tower crane hoisting mechanism, a crane electric motor of the MTF series, failed. The crane stopped, work stopped, every hour of downtime means direct losses. The customer requested urgent repairs.
Diagnostics
The engineer went to the site within a few hours. On-site diagnostics showed:
- Breakdown of the stator winding insulation on the housing.
- Severe wear of the bearings.
- Burning of the slip rings.
The engine was dismantled and delivered to the workshop.
Repair
Crane motors are working in repeated-short-term mode with frequent starts and reverses, therefore there are special requirements for them. We performed:
- Complete rewinding of the stator with class H insulation.
- Replacement of bearings with reinforced ones.
- Grinding and grinding of slip rings.
- Impregnation, drying and balancing rotor.
Result
| Indicator | Result |
|---|---|
| Repair period | One working day |
| Warranty | 12 months |
| Downtime crane | Minimized |
The engine was installed back, load tests were carried out - the crane returned to work. Timely treatment and urgent repair saved the customer days of downtime.
Crane motor failed at your site in Tashkent? Elektromotors engineers will perform urgent on-site repairs - contact us.