Apparatus and method for moving drilling equipment

Claim 1

APPARATUS FOR MOVING A DRILLING RIG INCLUDING A SUBSTRUCTURE WITH A DERRICK MOUNTED THEREON, COMPRISING, TWO PARALLEL SUPPORT BEAMS FOR EXTENSION THROUGH OPENINGS PROVIDED THEREFOR IN THE SUBSTRUTURE WITH THEIR LONGITUDINAL AXIS PARALLEL TO THE DIRECTION OF TRAVEL OF THE SUBSTRUCTURE; FIRST LOAD TRANSMITTING MEANS INCLUDING A TRUSS HAVING A HORIZONTAL MEMBER, EXTENDING BETWEEN THE FRONT ENDS OF THE SUPPORT BEAMS, A VERTICAL KING POST ATTACHED TO THE HORIZONTAL MEMBER AND LOCATED ABOUT MIDWAY BETWEEN THE ENDS OF THE SUPPORT BEAMS, AND INCLINED CHORD MEMBERS CONNECTING THE UPPER END KING POST WITH THE HORIZONTAL MEMBER; TWO TRAILING BOGIES LOCATED UNDER EACH TRAILING END OF THE BEAMS; A FRONT BOGIE AND A DRAWBAR HAVING ONE END SUPPORTED BY THE FRONT BOGIE AND ONE END ADAPTED TO BE CONNECTED TO A PRIME MOVER; AND SECOND MEANS FOR TRANSMITTING THE FIRST LOAD SUPPORTED BY THE LOAD TRANSMITTING MEANS TO THE DRAWBAR AT A POINT BETWEEN THE FRONT BOGIE AND THE CONNECTION BETWEEN THE DRAWBAR AND THE PRIME MOVER.