Articulating mast

• US 8,112,946 B2
• Filed: 11/23/2009
• Issued: 02/14/2012
• Est. Priority Date: 11/23/2009
• Status: Active Grant

• Current Assignee: Woolslayer Companies, Inc.
• Original Assignee: Woolslayer Companies, Inc.
• Inventors: Vogt, Dewayne G.
• Primary Examiner(s): KATCHEVES, BASIL S
• Application Number:
  US12/624,128
• Publication Number:
  US 20110120043A1
• Time in Patent Office: 813 Days
• Field of Search: 521/16, 521/17, 521/12, 526/510.1, 526/37, 526/45, 526/46
• US Class Current: 52/116
• CPC Class Codes: E21B 15/00 Supports for the drilling machine, e.g. derricks or masts
• CPC Class Codes: E21B 7/023 the mast being foldable or telescopically retractable

Abstract

The present invention relates to an articulating mast having sections that may be moved between an open, in-use position and a more compact reduced width configuration for storage and transportation.

Claims

1. An articulating mast, comprising:

an open face;

a pair of opposed sides, each side having a front leg and a rear leg;

a back face extending between said rear legs;

a pair of back face vertical supports running parallel to each other;

a plurality of back face horizontal supports, each said horizontal support having a first and second opposed end, each said horizontal support first end pivotally attached to one said back face vertical support and each said horizontal support second end pivotally attached to one said rear leg;

a plurality of back face diagonal supports, each said diagonal support having a first and second opposed end, each said diagonal support first end pivotally attached to one said back face vertical support adjacent one said horizontal support first end; and

a plurality of connecting devices on said rear legs adjacent said horizontal support second ends, such that each said diagonal support second end may be attached to one said rear leg by connecting said diagonal support second end to one said connecting device,

such that said articulating mast may be folded from an open position to a closed position by disconnecting said plurality of connecting devices from said plurality of diagonal support second ends to allow said diagonal support first ends, said horizontal support first ends, and said horizontal support second ends to pivot such that said plurality of back face horizontal supports and said plurality of back face diagonal supports move within a plane defined by said back face to lie relatively closer to said back face vertical supports, such that, when the articulating mast is in said closed position, said rear legs remain within the plane defined by the back face, but are located relatively closer to said back face vertical supports and vertically offset from their location when in said open position and two planes each defined by one of the sides remain perpendicular to the plane defined by the back face at all times.

2. The articulating mast of claim 1 where the plurality of connecting devices is a plurality of pin receivers and connecting said diagonal support second end to one said connecting device is accomplished by inserting one of a plurality of pins through said diagonal support second end and one said pin receiver.

3. The articulating mast of claim 2 further comprising a plurality of pin receivers on said rear legs located such that each said diagonal support second end may be secured with one said pin to one said pin receiver when said articulating mast is in said closed position.

4. The articulating mast of claim 3 further comprising a plurality of transport locks located on said horizontal supports such that such transport locks may be pinned to said rear legs when said articulating mast is in a closed position such that said articulating mast cannot easily accidentally unfold during transport.

5. The articulating mast of claim 1 further comprising an integral guide track system.

6. The articulating mast of claim 5 where the guide track is capable of mounting a top drive.

7. The articulating mast of claim 6 where said top drive may be secured when said articulating mast is in said closed position such that said top drive may not travel along said integral guide track system.

8. The articulating mast of claim 5 further comprising a traveling block mounted on said integral guide track system.

9. The articulating mast of claim 8 where said traveling block may be secured when said articulating mast is in said closed position such that it may not travel along said integral guide track system.

10. The articulating mast of claim 1 where said articulating mast comprises a plurality of vertical sections, and further comprising connectors between such sections, such that such sections may be disconnected from adjacent sections prior to folding or unfolding said articulating mast.

11. A method of folding an articulating mast having:

an open face;

a pair of opposed sides, each side a front leg and a rear leg;

a back face extending between said rear legs;

a pair of back face vertical supports running parallel to each other;

a plurality of back face horizontal supports, each said horizontal support having a first and second opposed end, each said horizontal support first end pivotally attached to one said back face vertical support and each said horizontal support second end pivotally attached to one said rear leg;

a plurality of back face diagonal supports, each said diagonal support having a first and second opposed end, each said diagonal support first end pivotally attached to one said back face vertical support adjacent one said horizontal support first end; and

a plurality of connecting devices on said rear legs adjacent said horizontal support second ends, such that each said diagonal support second end may be attached to one said rear leg by connecting said diagonal support second end to one said connecting device, said method of folding an articulating mast comprising;

disconnecting said plurality of connecting devices from said plurality of diagonal support second ends; and

pulling the rear legs downward such that the horizontal support first ends, horizontal support second ends, and diagonal support first ends pivot such that the horizontal supports and diagonal supports move within a plane defined by the back face to lie relatively closer to the back face vertical supports, while the rear legs remain within the plane defined by the back face but are located relatively closer to the back face vertical supports and are vertically offset from their prior position and two planes each defined by one of the sides remain perpendicular to the plane defined by the back face at all times.

12. The method of claim 11 further comprising separating the articulating mast into sections prior to disconnecting said plurality of connecting devices from said plurality of diagonal support second ends.

13. The method of claim 11, where the plurality of connecting devices is a plurality of pin receivers and disconnecting said plurality of connecting devices from said plurality of diagonal support second ends is accomplished by removing the plurality of pins from the plurality of pin receivers and diagonal support second ends.

14. The method of claim 13, where the articulating mast further comprises a plurality of transport locks located on said horizontal support second ends and a plurality of pin receivers on said rear legs vertically offset from said horizontal support second ends, such that each said diagonal support second end and each transport lock may be attached to one said rear leg by inserting one said pin through said diagonal support second end, said transport lock, and one said pin receiver, and where said method further comprises pinning the diagonal support second ends and transport locks to the pin receivers to secure the articulating mast from unfolding.

15. The method of claim 11 where the articulating mast further comprises an integral guide track system, a top drive, and a traveling block, where the method further comprises securing the top drive and traveling block to the back face prior to disconnecting said plurality of connecting devices from said plurality of diagonal support second ends.

16. A method of unfolding an articulating mast having:

an open face;

a pair of opposed sides, each side having a front leg and a rear leg;

a back face extending between said rear legs;

a pair of back face vertical supports running parallel to each other;

a plurality of back face horizontal supports, each said horizontal support having a first and second opposed end, each said horizontal support first end pivotally attached to one said back face vertical support and each said horizontal support second end pivotally attached to one said rear leg;

a plurality of back face diagonal supports, each said diagonal support having a first and second opposed end, each said diagonal support first end pivotally attached to one said back face vertical support adjacent one said horizontal support first end;

a plurality of pins;

a plurality of transport locks located on said horizontal support second ends; and

a plurality of pin receivers on said rear legs vertically offset from said horizontal support second ends, such that each said diagonal support second end and each transport lock may be attached to one said rear leg by inserting one said pin through said diagonal support second end, said transport lock, and one said pin receiver, said method of unfolding an articulating mast comprising;

removing the pins from the diagonal support second ends, transport locks, and pin receivers; and

pulling the rear legs upwards such that the horizontal support first ends, horizontal support second ends, and diagonal support first ends pivot such that the horizontal supports and diagonal supports move within a plane defined by the back face to lie relatively further from the back face vertical supports, while the rear legs remain within the plane defined by the back face but are located relatively further from the back face vertical supports and two planes each defined by one of the sides remain perpendicular to the plane defined by the back face at all times, and such that the horizontal supports lie generally perpendicular to the back face vertical supports.

17. The method of claim 16 where the articulating mast further comprises a plurality of pin receivers on said rear legs adjacent said horizontal support second ends, such that each said diagonal support second end may be attached to one said rear leg by inserting one said pin through said diagonal support second end and one said pin receiver, and where the method further comprises pinning said diagonal support second ends to said rear legs.

18. The method of claim 17 where the articulating mast further comprises an integral guide track system, a top drive, and a traveling block, where the method further comprises releasing the top drive and traveling block from the back face after pinning the diagonal support second ends to said rear legs.