FIELD: construction.
SUBSTANCE: invention relates to construction equipment, in particular to devices for rolling vertical and inclined wells. Wells roller is a hollow cylindrical-conical structure filled with water for cooling. Roller also has a channel to supply concrete mixture through the drill rod into the well cavity. Cylinder has diameter D. On the conical part of the device chequer-wise there are rigidly fixed conical sectors projecting by 0.05 D, diametrically opposite and shifted in height from each other by 0.8 D. Roller is composed as a welded structure of a tube, a hexagonal pyramid and plates welded to the pyramid in the form of conical layers.
EFFECT: reduction of costs for manufacturing the roller and reduced consumption of water for its cooling during operation.
1 cl, 3 dwg
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