Battery powered mechanized raise climbing system

• US 8,362,721 B2
• Filed: 02/20/2009
• Issued: 01/29/2013
• Est. Priority Date: 02/21/2008
• Status: Active Grant

• Current Assignee: Redpath Canada Limited
• Original Assignee: J.S. Redpath Limited (J.S. Redpath Holdings, Inc.)
• Inventors: Jylha, Rick T.
• Primary Examiner(s): Benson, Walter
• Assistant Examiner(s): CARRASQUILLO, JORGE L
• Application Number:
  US12/389,592
• Publication Number:
  US 20090211853A1
• Time in Patent Office: 1,439 Days
• Field of Search: 318/139, 318/376, 310/12, 310/13, 310/14, 310/12.12, 187/80, 187/112, 187/73, 187/89, 187/91, 187/77, 187/251, 187/250, 180/65.29, 180/68.5, 104/94, 104/91, 104/48, 104/96, 104/89
• US Class Current: 318/139
• CPC Class Codes: B66B 9/193 with inclined liftways
• CPC Class Codes: E21D 3/00 Raising shafts, i.e. working upwards from the bottom
• CPC Class Codes: E21F 13/04 Transport of mined material in gravity inclines; in staple or inclined shafts
• CPC Class Codes: E21F 13/06 Transport of mined material at or adjacent to the working face
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 2310/10 The network having a local or delimited stationary reach
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: H02P 27/04 using variable-frequency supply voltage, e.g. inverter or converter supply voltage

Abstract

A battery powered raise climber system is provided that uses Lithium ion batteries to drive a single or double electric drive for an existing raise climber. The batteries offer a faster, safer, quieter and cleaner way to move workers and their equipment to and from the work face in a raise and eliminates the need for adding lengths of hose as the raise climber ascends and eliminates the emission of harmful inhalants. The battery powered system also enables high efficiency area lighting to be used at the work face, and as the raise climber descends in the raise, the electric drives can reverse operation to recharge the batteries.

Claims

1. A method of adapting a raise climber to be driven using a battery powered drive system for operating the raise climber in a mine without a tethered cable or fume emitting engine, the method comprising:

incorporating one or more electric motors into the battery powered drive system;

determining a number of batteries that can be accommodated according to the weight of the raise climber and the weight that the raise climber would be required to carry if the tethered cable or fume emitting engine were used to operate the raise climber;

supporting the number of batteries on the raise climber; and

connecting the number of batteries to the one or more electric motors through one or more respective variable frequency drives that enables the batteries to power the electric motors when the raise climber ascends and to recharge the batteries when the raise climber descends.

2. The method of claim 1 wherein said batteries are Lithium-ion batteries.

3. The method of claim 1, further comprising incorporating a pair of motors and a pair of corresponding variable frequency drives in a master/slave configuration.

4. The method of claim 1, further comprising incorporating high efficiency lighting powered by said batteries.

5. The method of claim 1 further comprising incorporating, for each variable frequency drive, a dynamic braking resistor to assist in dynamic braking of said motors.

6. The method of claim 1 further comprising providing an operator controller for driving said raise climber forwards and backwards.

7. The method of claim 6 further comprising providing a closed loop speed control and tachometer mounted on a shaft of said motor.

8. The method of claim 6 wherein said operator controller comprises a high resolution joystick.

9. The method of claim 1 further comprising incorporating a connector for charging said batteries using a battery charger.

10. The method of claim 1 being performed to retrofit an existing raise climber.

11. The method of claim 10 wherein said existing raise climber comprises a diesel motor mounting area and the method further comprises installing at least a portion of the drive system i in the diesel motor mounting area.

12. A raise climber to be used in a mine, the raise climber designed to normally operate in the mine using a tethered cable or fume emitting engine, the raise climber comprising:

a battery powered drive system adapted to the raise climber for operating the raise climber in the mine without the tethered cable or fume emitting engine, the battery powered drive system comprising;

one or more electric motors incorporated into the battery powered drive system; and

one or more batteries determined according to the weight of the raise climber and the weight that the raise climber would be required to carry if the tethered cable or fume emitting engine were used to operate the raise climber, the one or more batteries being supported in an enclosure on the raise climber and connected to the one or more electric motors through one or more respective variable frequency drives to have the batteries power the electric motors when the raise climber ascends and to recharge the batteries when the raise climber descends.

13. The raise climber according to claim 12, wherein said batteries are Lithium-ion batteries.

14. The raise climber according to claim 12, comprising a pair of motors and a pair of corresponding variable frequency drives in a master/slave configuration.

15. The raise climber according to claim 12 further comprising high efficiency lighting powered by said batteries.

16. The raise climber according to claim 12 further comprising, for each variable frequency drive, a dynamic braking resistor to assist in dynamic braking of said motors.

17. The raise climber according to claim 12 further comprising an operator controller for driving said raise climber forwards and backwards.

18. The raise climber according to claim 17 further comprising a closed loop speed control and tachometer mounted on a shaft of said motor.

19. The raise climber according to claim 17 wherein said operator controller comprises a high resolution joystick.

20. The raise climber according to claim 12 further comprising a connector for charging said batteries using a battery charger.

21. The raise climber according to claim 12, wherein the raise climber is retrofitted from an existing raise climber.

22. The raise climber according to claim 21 wherein said existing raise climber comprises a diesel motor mounting area and at least a portion of the drive system is housed in the diesel motor mounting area.