CONSTRUCTION MACHINE Russian patent published in 2007 - IPC E21B7/02 E21B15/00 

FIELD: construction machine for ground excavation, particularly drilling rigs characterized by means for land transport.

SUBSTANCE: machine comprises chassis and pole member having hinged connection for pole member rotation from vertical working position in inclined transport position on chassis. The hinged connection is mounted on skid installed on chassis and may move between rear position, in which the hinged connection is brought rearwards towards chassis center, and front position, in which hinged connection is displaced forwards from chassis center. Machine comprises installation drive for forced skid displacement mounted on the skid. The installation drive is preferably linear drive secured to skid from the first drive end and to chassis from another end thereof. Machine has at least one rear hydraulic cylinder pivotally connected to chassis by the first side and to pole member by the second cylinder side over hinged connection. If pole member is turned into inclined transport position the skid is in front position. If pole member is turned into vertical working position the skid is in rear position.

EFFECT: increased space saving in transport position and simplified structure.

8 cl, 3 dwg