ADAPTABLE VEHICLE

• US 20130328290A1
• Filed: 02/10/2012
• Published: 12/12/2013
• Est. Priority Date: 02/11/2011
• Status: Active Grant

• Current Assignee: University of Regina
• Original Assignee: University of Regina
• Inventors: Mehrandezh, Mehran, Bazargan, Amir Hossein
• Granted Patent: US 9,056,746 B2
• Time in Patent Office: Days
• US Class Current: 280/638
• CPC Class Codes: B60B 11/02 Units of separate wheels mounted for independent or coupled rotation
• CPC Class Codes: B60B 19/12 Roller-type wheels B60B19/06 takes precedence
• CPC Class Codes: B60K 17/356 having fluid or electric motor, for driving one or more wheels disposition of motor in, or adjacent to, traction wheel B60K7/00
• CPC Class Codes: B60K 2007/003 with two or more motors driving a single wheel
• CPC Class Codes: B60K 2007/0092 the motor axle being coaxial to the wheel axle
• CPC Class Codes: B60K 7/0007 the motor being electric
• CPC Class Codes: B60Y 2200/44 Multi-axle long vehicles, with independently drivable or steerable wheels
• CPC Class Codes: B60Y 2200/60 Industrial applications, e.g. pipe inspection vehicles
• CPC Class Codes: B62D 57/028 having wheels and mechanical legs B62D57/024 takes precedence; ground-engaging vehicle fittings for supporting, lifting or manoeuvring the vehicle, wholly or in part B60S9/00
• CPC Class Codes: B62D 61/00 Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
• CPC Class Codes: B66B 9/02 actuated mechanically otherwise than by rope or cable
• CPC Class Codes: F16L 55/32 being self-contained

Abstract

The present disclosure is directed at an adaptable vehicle that includes a pair of primary rollers for rolling along a surface on which the vehicle is travelling. At least one of the rollers is rotatably powered. The adaptable vehicle also includes two sets of linking arms, one of which is coupled to one of the rollers and the other of which is coupled to the other of the rollers such that moving the sets of linking arms can shift the axes of rotation of the rollers without impeding rotation of the rollers. The sets of linking arms are connected to and rotatable about an actuatable hub. Actuation of the hub causes at least one set of the linking arms to rotate about the hub and shifts the axis of rotation of at least one of the rollers to allow the vehicle to adapt to its surroundings.

Claims

1. An adaptable vehicle, comprising:

(a) a pair of primary rollers for rolling along a surface on which the vehicle is travelling, wherein at least one of the rollers is rotatably powered;

(b) two sets of linking arms, one of which is coupled to one of the rollers and the other of which is coupled to the other of the rollers such that moving the sets of linking arms can shift the axes of rotation of the rollers without impeding rotation of the rollers; and

(c) an actuatable hub to which the sets of linking arms connect and about which the sets of linking arms are rotatable, wherein actuation of the hub causes at least one set of the linking arms to rotate about the hub and shifts the axis of rotation of at least one of the rollers to allow the vehicle to adapt to its surroundings.

2. A vehicle as claimed in claim 1 wherein the hub further comprises a hub roller positioned to roll along the surface when the surface is of an object located between the primary rollers and the hub roller.

3. A vehicle as claimed in claim 2 wherein each of the sets of linking arms comprises a pair of linking arms between which the object passes as the vehicle is travelling, and wherein the primary and hub rollers are coplanar along a roller plane that passes between the pairs of linking arms and that intersects the object.

4. A vehicle as claimed in claim 2 wherein the hub roller and the sets of linking arms rotate about a common axis of rotation.

5. A vehicle as claimed in claim 2 wherein the hub roller is unpowered.

6. A vehicle as claimed in claim 1 wherein rotation of the sets of linking arms about the hub and of any of the rollers that are powered is driven by a DC motor having an output shaft coaxial with the axis about which the rotation occurs.

7. A vehicle as claimed in claim 1 further comprising a roller optical encoder positioned to measure the angular position of one of the primary rollers and wherein the hub further comprises a hub optical encoder positioned to measure the angular position of the sets of linking arms.

8. A vehicle as claimed in claim 1 wherein both of the primary rollers are rotatably powered.

9. An adaptable vehicle for climbing an object, the vehicle comprising:

(a) a pair of primary rollers positioned to roll along a surface of one portion of the object, wherein at least one of the rollers is rotatably powered;

(b) an actuatable hub comprising a hub roller positioned to roll along a surface of another portion of the object, wherein the hub is actuatable in expanding and contracting directions; and

(c) two sets of linking arms each rotatably coupling one of the primary rollers to the hub such that actuation of the hub in the expanding direction causes the primary and hub rollers to press against the object when the object is around the vehicle, and actuation of the hub in the contracting direction causes the primary and hub rollers to clamp the object when the object is located between the primary and hub rollers.

10. A vehicle as claimed in claim 9 wherein each of the sets of linking arms comprises a pair of linking arms between which the object passes as the vehicle is climbing when the object is located between the primary and hub rollers, and the primary and hub rollers are coplanar along a roller plane that passes between the pairs of linking arms and that intersects the object.

11. A vehicle as claimed in claim 9 wherein the hub rollers and the sets of linking arms rotate about a common axis of rotation.

12. A vehicle as claimed in claim 9 wherein the hub roller is unpowered.

13. A vehicle as claimed in claim 9 wherein the rotation of the sets of linking arms about the hub and of any of the rollers that are powered is driven by a DC motor having an output shaft coaxial with the axis about which the rotation occurs.

14. A vehicle as claimed in claim 9 further comprising a roller optical encoder positioned to measure the angular position of one of the primary rollers and wherein the hub further comprises a hub optical encoder positioned to measure the angular position of the sets of linking arms.

15. A vehicle as claimed in claim 9 wherein both of the primary rollers are rotatably powered.

16. A method for climbing an object using a vehicle as claimed in claim 9, the method comprising:

(a) actuating the hub such that frictional force between the primary and hub rollers press and the object is within a predetermined range sufficient to prevent the vehicle from falling; and

(b) powering the primary roller that is rotatably powered to propel the vehicle along the object.

17. A method as claimed in claim 16 further comprising:

(a) detecting a change in the shape of the object; and

(b) accordingly actuating the hub such that the frictional force between the primary and hub rollers and the object is maintained within a predetermined range sufficient to prevent the vehicle from falling.

18. A method as claimed in claim 16 further comprising:

(a) detecting when the vehicle falls; and

(b) when the vehicle falls, actuating the hub such that sufficient frictional force results between the primary and hub rollers and the object to stop the vehicle from falling and locking the primary rollers in place.

19. A computer readable medium having encoded thereon statements and instructions to cause a controller to control an adaptable vehicle according to a method as claimed in claim 16.