19 50 kg (2.2 kW) to 5 ton (7.2MW) motor/reducer/ventilator assemblies
Client expectation
Each year, out client, a ready-to-use cement, aggregates and concrete manufacturer, undertakes technical stoppages in order to maintain its ovens. Indeed, the cement manufacturer takes advantage of these 3-week stoppages to replace a large number of machines and thus overhaul the dismantled equipment. In order to be totally trouble-free with their running and restarting, he wished to work with a reliable partner who would:
- take responsibility for the overall operation
- know how to manage the electrical and mechanical parts of the drive system
- provide a technical guarantee for operations allowing secure restarting
- comply with the safety regulations
DV GROUP Solution
Satisfied with our expertise and our offer, our client chose to grant us the exclusivity of the replacement / overhauling of machines during its technical stoppages. This time, for our fourth collaboration, the experts from our electro-mechanical agency in Saint-Priest were mobilised for 3 weeks to process 19 machines (moto-reducers, moto-ventilators and motors) from 50 kg (2.2 kW) to 5 tons (7.2MW) and to keep to the deadline set by our client.
Work carried out
DV GROUP technical solution:
Disassembly/reassembly of 19 motor/reducer/ventilator assemblies
- Site management
- Implementation of safety regulations
- Implementation of appropriate lifting means and transport
- Electric cable dismantling / mechanical disassembly and reassembly
- Swapping of couplings and hydraulic couplings
- Laser alignment of direct drives and pully/belt systems
- Machine trials
- Site cleaning
Overhauling of 5 moto-ventilators and moto-reducers in the workshop
- Monitoring of the electrical part (insulation, resistances, shock wave, index)
- Monitoring of the mechanical part (bearing seats, joints, interlocking)
- External and internal depollution via cleaning and steaming
- Dynamic balancing of the turbines
- Monitoring of reducers: lubrification, waterproofing, gearing
- Changing of the bearings and SKF range joints
- Anti-flash finish
- Empty and loaded testing on the trial platform