SUSPENSION WELL SAFETY BRIDGE Russian patent published in 2015 - IPC F42D1/08 

FIELD: mining.

SUBSTANCE: suspension well safety bridge consists of a supporting structure and a suspended part fixed on the supporting structure. The suspended part is made in the form of a composite cylinder made of two semi-cylinders connected with a temporary link, on the inner surfaces of each of which in its upper part facing to a well head there attached is a half cylinder of a smaller diameter perpendicular to the cylinder generatrix. A wedge is inserted between two semi-cylinders of the composite cylinder, and a disc is attached to its base, the diameter of which is compatible with well diameter. Height of the wedge to the disc is bigger than height of the composite cylinder, and width of the wedge together with two halves of the cylinder of smaller diameter and semi-cylinders of the composite cylinder is bigger or equal to 1.1-1.2 of the well diameter.

EFFECT: invention allows improving crushing efficiency of mine rocks.

2 dwg