movable on the ground g such as a trailer r pulled by a truck t during transport the four telescoping beams 21 24 are extended upon arrival near a rig 20 the telescoping beams 21 24 are raised and pinned in place with pins 25 fig2 c the drawworks 10 is rotated with the bearings 16 17 ninety degrees or any desired angle see fig2 e the telescoping beams 21 24 are then extended as in fig2 f as shown in fig2 f the truck t backs up the trailer r to the rig 20 the rig 20 has a drill floor 28 and a substructure 26 with pivotable supports 26 s that supports and are selectively raised and lowered with the drill floor 28 the trailer r is backed up so that the drawworks 10 is almost flush with the drill floor 28 using powered hydraulic cylinder apparatuses 29 a of the substructure 26 the substructure 26 is raised see fig2 g until a pin connection 27 of the substructure 26 is received and held in the hook connection 11 of the drawworks 10 see fig2 g 2 h 2 i then the drawworks is lifted off the truck by the substructure 26 fig2 k as shown in fig2 j and 2k the substructure 26 is lowered so that pins 37 one on each side pin together the drawworks 10 and.