Mining vehicle and method for its energy supply

• US 20120298004A1
• Filed: 12/27/2010
• Published: 11/29/2012
• Est. Priority Date: 12/28/2009
• Status: Active Grant

• Current Assignee: Sandvik Mining and Construction OY (Sandvik AB)
• Original Assignee: Sandvik Mining and Construction OY (Sandvik AB)
• Inventors: Kouvo, Mikko, Piipponen, Juha, Osara, Jukka
• Granted Patent: US 8,955,657 B2
• Time in Patent Office: Days
• US Class Current: 102/313
• CPC Class Codes: B60K 1/00 Arrangement or mounting of electrical propulsion units B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00; electric transmission arrangements B60K17/12; electric equipment or propulsion of electrically-propelled vehicles per se B60L; current-collectors for power supply lines of electrically-propelled vehicles B60L5/00
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 50/53 in combination with an external power supply, e.g. from overhead contact lines
• CPC Class Codes: B60L 53/20 characterised by converters located in the vehicle
• CPC Class Codes: B60L 9/12 with static converters
• CPC Class Codes: B60L 9/18 fed from dc supply lines
• CPC Class Codes: B60L 9/24 fed from ac supply lines
• CPC Class Codes: B60Y 2200/412 Excavators
• CPC Class Codes: B60Y 2200/49 Movable platforms, Load ramps, e.g. working platforms
• CPC Class Codes: E21B 7/025 Rock drills, i.e. jumbo drills
• CPC Class Codes: H02J 7/345 using capacitors as storage or buffering devices
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The invention relates to a mining vehicle and method for its energy supply. The mining vehicle has a carriage, driving equipment for moving the carriage, and at least one mining work device. Further, the mining vehicle has at least one electric motor for operating a main function of the mining vehicle, and at least one electric motor for operating an auxiliary function of the mining vehicle. The mining vehicle further has a power-generating auxiliary unit. When necessary, the power-generating auxiliary unit supplies at least part of the power required by the electric motor operating the auxiliary function.

Claims

1. A mining vehicle having

a carriage,

driving equipment for moving the carriage (3),

at least one mining work device, which is one of the following:

rock drilling machine, bolting device, shotcrete apparatus, scaling device, injection device, blasthole charger, loading device, measuring device,

at least one electric motor for operating a main function of the mining vehicle,

at least one electric motor for operating an auxiliary function of the mining vehicle,

a connecting device for connecting an electrical network of the mine to the mining vehicle,

at least one power-generating auxiliary unit, and

a control unit that is configured to connect the power-generating auxiliary unit to supply, when necessary, at least part of the power required by the electric motor operating the auxiliary function when simultaneously the at least one electric motor for operating the main function of the mining vehicle is supplied from the electrical network of the mine.

2. A mining vehicle as claimed in claim 1, wherein the power-generating auxiliary unit generates effective power.

3. A mining vehicle as claimed in claim 1, wherein the power-generating auxiliary unit is a set of batteries or super capacitor or a combination thereof.

4. A mining vehicle as claimed in claim 1, wherein at least one electric motor is an alternating current motor.

5. A mining vehicle as claimed in claim 4, wherein the mining vehicle comprises a DC intermediate circuit, to which electricity is supplied from the electrical network of the mine with a rectifier, and at least one inverter for supplying the electrical energy of the DC intermediate circuit to the alternating current motor operating the auxiliary function of the mining vehicle, in which case the power-generating auxiliary unit is connected to the DC intermediate circuit.

6. A mining vehicle as claimed in claim 5, wherein said rectifier has means for compensating idle power.

7. A mining vehicle as claimed in claim 5, wherein said rectifier is arranged to charge the power-generating auxiliary unit.

8. A mining vehicle as claimed in claim 5, wherein the mining vehicle has a DC/DC converter between the power-generating auxiliary unit and DC intermediate circuit for adapting the voltage level of the power-generating auxiliary unit and for connecting the power-generating auxiliary unit to supply energy to the DC intermediate circuit.

9. A mining vehicle as claimed in claim 1, wherein the mining vehicle is a rock drilling rig, in which case the main function of the mining vehicle consists of at least one rock drilling machine, and the auxiliary function of the mining vehicle consists of one or more of the following:

a water pump system, air pressure compressor system and auxiliary hydraulics system.

10. A method for the energy supply of a mining vehicle with a carriage, drive equipment for moving the carriage, at least one mining work device, which mining work device is one of the following:

rock drilling machine, bolting device, shotcrete apparatus, scaling device, injection device, blasthole charger, loading device, measuring device;

at least one electric motor (28a) for operating a main function of the mining vehicle, at least one electric motor for operating an auxiliary function of the mining vehicle and at least one power-generating auxiliary unit, the method comprising connecting the at least one power-generated auxiliary unit, when necessary, to supply at least part of the power required by the electric motor operating the auxiliary function and simultaneously supplying the at least one electrical motor for operating the main function of the mining vehicle from an electrical network of the mine.

11. A method as claimed in claim 10, comprising supplying effective power from the power-generating auxiliary unit to the electric motor operating the auxiliary function.

12. A method as claimed in claim 10, wherein at least one electric motor is an alternating current motor.

13. A method as claimed in claim 12, wherein the mining vehicle comprises a DC intermediate circuit, to which electricity is supplied from the electrical network of the mine with a rectifier, and from which electricity is supplied to the at least one alternating current motor operating the auxiliary function of the mining vehicle, in which case the power-generating auxiliary unit supplies electric energy to the DC intermediate circuit when necessary.

14. A method as claimed in claim 13, comprising compensating the idle power of the mining vehicle with said rectifier.

15. A method as claimed in claim 13, comprising charging with said rectifier the power-generating auxiliary unit.

16. A method as claimed in claim 13, comprising adapting by means of a DC/DC converter the voltage level of the power-generating auxiliary unit to the DC intermediate circuit and the power-generating auxiliary unit to supply energy to the intermediate circuit.