Bi-directional autonomous truck

• US 6,863,351 B2
• Filed: 06/03/2003
• Issued: 03/08/2005
• Est. Priority Date: 01/15/2002
• Status: Expired due to Term

• Current Assignee: Modular Mining Systems Incorporated (Komatsu Ltd.)
• Original Assignee: Modular Mining Systems Incorporated (Komatsu Ltd.)
• Inventors: Baker, Mark R., Omdahl, Randall J.
• Primary Examiner(s): GORDON, STEPHEN T
• Application Number:
  US10/454,251
• Publication Number:
  US 20030193234A1
• Time in Patent Office: 644 Days
• Field of Search: 298/7, 298/17.5, 298/17.6, 298/22.R, 180/167, 180/342, 180/343, 180/371
• US Class Current: 298/17.6
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2260/32 Auto pilot mode
• CPC Class Codes: B60L 50/10 using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
• CPC Class Codes: B60P 1/16 actuated by fluid-operated mechanisms
• CPC Class Codes: B60P 1/283 Elements of tipping 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

Abstract

A bi-directional autonomous truck. The truck includes a drive-train including one or more drive wheels, the drive-train having drive characteristics that are substantially the same whether the drive wheels rotate clockwise or counterclockwise. The drive characteristics may consist of the ability to reach a maximum rotational speed of the drive wheels, but may include other characteristics, such as the ability to steer corresponding pairs of drive wheels that are situated at opposite ends of the truck. Preferably, the truck includes a dump bed that is adapted for dumping in either of two opposite directions.

Claims

1. An autonomous truck having a longitudinal axis defining a first truck end and a second truck end, comprising a truck chassis and a dump bed supported by said truck chassis, said truck chassis having a first lifting mechanism and a first bearing connected to the first truck end and a second lifting mechanism and a second bearing connected to the second truck end, said first lifting mechanism being coupled to a first dump-bed end of the dump bed and said second lifting mechanism being coupled to a second dump-bed end of the dump bed, wherein the first bearing is adapted to receive and pivotally retain said dump bed when said dump bed is being lifted by the second lifting mechanism, and to release said dump bed when said dump bed is being lifted by the first lifting mechanism, and wherein the second bearing is adapted to receive and pivotally retain said dump bed when said dump bed is being lifted by the first lifting mechanism, and to release said dump bed when said dump bed is being lifted by the second lifting mechanism.

2. The autonomous truck of claim 1, wherein said chassis includes a drive train including a first set of wheels and a second set of wheels corresponding to the first truck end and the second truck end, and wherein said dump bed is substantially symmetric about a plane that is perpendicular to said longitudinal axis and centered between said first set of wheels and said second set of wheels.

3. The autonomous truck of claim 2, further comprising a first power source;

wherein said first set of wheels is spaced apart from said second set of wheels along said axis;

said first set of wheels includes a first wheel and a second wheel;

said rear set of wheels includes a third wheel and a fourth wheel; and

said drive-train further includes one of (a) a mechanical transmission for transmitting rotational motion of said first power source to said first wheel, said mechanical transmission including a plurality of forward gears and a plurality of reverse gears, and (b) an electrical control system for distributing electrical current to said power source, said first power source being mechanically coupled to said first wheel, said electrical control system being adapted so that a maximum rotational speed of said power source is substantially the same for both clockwise and counterclockwise rotation thereof.

4. The autonomous truck of claim 3, wherein said drive-train includes said electrical control system.

5. The autonomous truck of claim 4, further comprising a second power source mechanically coupled to said third wheel, said electrical control system being adapted so that a maximum rotational speed of said second power source is substantially the same for both clockwise and counterclockwise rotation thereof.

6. The autonomous truck of claim 5, wherein said maximum rotational speeds of said first and second power sources are substantially the same.

7. The autonomous truck of claim 5, further comprising a third power source mechanically coupled to said second wheel and a fourth power source mechanically coupled to said fourth wheel, said electrical control system being adapted so that a maximum rotational speed of said third and fourth power sources is substantially the same for both clockwise and counterclockwise rotation thereof.

8. The autonomous truck of claim 7, wherein said maximum rotational speeds of said first, second, third and fourth power sources are substantially the same.