DRILLING-CRANE MACHINE Russian patent published in 2007 - IPC E21B7/02 E21B3/02 

FIELD: drilling rigs characterized by means for land transport, for instance, skid mounting or wheel mounting, particularly drilling machines adapted to drill holes for posts and supports installation, for civil and industrial building structure erection, in mining and agriculture for drain systems laying.

SUBSTANCE: drilling-crane machine comprises transport base with engine, platform supported by transport base, drilling mast connected to the platform so that the drilling mast may rotate in vertical plane and carriage sliding along the drilling mast. Drilling-crane also comprises drive for drilling tool movement along drilling mast guide and drive for drilling tool rotation. Drive for drilling tool rotation is kinematically connected with cardan shaft of transport base engine and is made as angular reducing gear installed on the slide. Kinematical link includes two chain drive sections having one common axis. Two sprocket wheels are connected to the axis so that the sprocket wheels may perform free rotation and fixedly connected with each other. One chain drive section is secured to axis of driving pinion included in angular reducing gear by means of sprocket wheel. Sprocket wheel of another chain drive section may rotate about axis by means of cardan shaft, wherein the first axis end is connected with above sprocket wheel, the second end thereof is attached to drilling mast guide. The axes are connected with each other by means of levers linked to the axes by the first ends so that the levers may rotate about the axes. The second lever ends are fastened to common axis so that the levers may perform mutual rotation.

EFFECT: increased operational reliability and simplified structure, decreased costs of drilling-crane machine.

2 dwg