Contract: “Modernisation of the mining emergency and inspection shaft hoisting machine of the R-VII shaft of KGHM Polska Miedź S.A. “Rudna” Mining Plant” implemented as a turnkey project.
IMPLEMENTATIONS COMPLETED
Scope of the project
- comprehensive replacement of the B-1200/AC-2m/s emergency and inspection hoisting machine,
- replacement of the shaft signalling and communication system,
- construction works for adapting the building to accommodate the newly installed hoisting machine,
- development of technical documentation for the entire task,
- supply and installation of the machinery and equipment,
- cooperation with mining supervisory authorities,
- commissioning and servicing of supplied equipment.
B-1200/AC-2m/s hoisting machine
The B-1200/AC-2m/s type hoisting machine is a component of an auxiliary mine emergency and inspection shaft hoist for the R-VII shaft of the Zakłady Górnicze “Rudna” Section. It a single-drum hoisting machine used to provide:
- evacuation of personnel from the conveyance of the primary hoist stopped in the shaft by emergency or from mine level,
- inspection and monitoring of the technical condition of the shaft, repair of shaft equipment and shaft works.
The machine is controlled automatically from the control panels at the signalling stations for inspection work and manually from the machine operator panel.
The main components of the hoisting machine are:
- main shaft unit,
- cylindrical toothed gear,
- AC drive motor,
- disc brake,
- frequency converter powering the main drive motor, enabling motor or generator operation,
- control, monitoring and safety systems for the hoisting machine,
- system for the visualisation and signalling of the operating states of individual components of the machine based on an HMI panel.
Photo 1- B-1200/AC-2m/s hoisting machine
Photo 2 – Hoisting machine drive unit
Photo 3 – Column with a pair of brake cylinders
Photo 4 – H-C MWM-70 brake control and power unit
The hoisting machine uses the GRZ-08-A digital travel controller, which implements the functions of speed setting and control. The entire control, regulation and protection systems are based on programmable controllers and other electrical components produced.
Photo 5 – Control and protection system cabinets
Photo 6 – Hoisting machine operator’s station
The hoisting machine works with the newly installed shaft signalling and communications equipment, communicating with it in two paths, by electrical connections and through communication links.
Technical specifications of the B-1200/AC-2m/s hoisting machine and mine shaft hoist:
| travel speed | 2,0 m/s |
| diameter of the winding drum | 1200 mm |
| diameter of the hoisting cable | 22 mm |
| drive motor parameters: | |
| type | M3BP 280 SMA 4 |
| power | Pn = 90 kW |
| RPM | nn = 1481 rpm |
Shaft signalling and communication system
The shaft signalling and communication system is constructed using a system of redundant logical controllers exchanging data with local stations using optical fibre cables.
The modernised shaft signalling and communication system provides duplex sound communication between the control and signalling stations of the mine shaft hoist and works with the control and protection system of the hoisting machine.
