DRILLING STAND UNIT Russian patent published in 1994 - IPC

FIELD: drilling equipment. SUBSTANCE: drilling stand unit includes rotary head, cardan shaft, bevel gearing, rotary table, flexible measuring member. Novelty consists in making of flexible member in form of detachable clamp mounted on cardan shaft and located diametrically opposed to stiffening ribs interconnected by connectors. Ribs with their one end are attached to cardan shaft, and mounted on their free ends are strain-measuring cantilever beams. Beams interact with clamp by means of point stops. Arranged on beam is strain-measuring bridge. Sizes of stiffening ribs and strain-measuring beams satisfy the relations given in invention description. EFFECT: higher efficiency. 3 dwg, 5 tbl