Coal mine cross roadway square coal chute

Abstract

The utility model discloses a kind of square coal chute of coal mine cross tunnel, funnel is rectangle, its axis is perpendicular to coal outlet roadway roof plane, the bottom end of funnel is connected with rectangular straight cylinder, the included angle between the axis of rectangular straight cylinder and the axis of funnel perpendicular to coal outlet roadway is 26 °, rectangular straight cylinder bottom end penetrates middle hardening layer, extends to coal outlet roadway, and is connected with rectangular conveying cylinder, the included angle between the axis of rectangular conveying cylinder and the axis of rectangular straight cylinder space is 30 °, overall inclination setting, with horizontal plane 45 ° angle, the bottom end of rectangular conveying cylinder extends to the top end of conveying belt, the connecting end flange of funnel, rectangular straight cylinder, rectangular conveying cylinder all uses 20mm steel plate, and is connected by high-strength bolt, 20mm manganese steel plate is used at coal end of rectangular conveying cylinder cylinder body, the rest cylinder body uses 8mm steel plate, the present application is distinguished from circular coal chute manufacturing simple, when a large amount of coal is stable, coal conveying passage is not easy to block, and overall is formed by splicing, easy to install and maintain.

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