ORE CHUTE GATE Russian patent published in 2009 - IPC B65D90/54 B65G65/34 E21D13/04 

FIELD: mining.

SUBSTANCE: invention refers to auxiliary transport equipment and is designed for implementation particularly at shutting off apertures of ore chutes for fine and medium size lumps at mines or at unloading lumps out of hoppers. The ore chute gate consists of two secured on cranks bottoms arranged under a hopper outlet; the said bottoms are designed to turn in a vertical plane in opposite directions relative to horizontal axes. The axes are located on exterior sides of vertical walls of a sleeve and parallel to them, while the bottoms on the cranks are secured overhung and have length of an arc corresponding to direct angle with direction of free ends of the bottoms inside the sleeve. Kinematical connection between the cranks is made in form of other cranks secured on axes. Free ends of other cranks are connected to rods of two double-rod power cylinders horizontally oriented and arranged with gaps relative to two other walls of the sleeve. In the initial position at an open gate the cranks of the bottoms are oriented horizontally, while the other cranks form the angle of 45° with the walls of the sleeve. An apron with two sloping surfaces is installed inside the sleeve at the level of axes and parallel to them, this apron overlaps edges of the bottoms in plane.

EFFECT: invention facilitates upgraded reliability of operation at unloading bigger size lumps via outlet of ore chute.

3 dwg