RIGHT ANGLE SCRAPER CONVEYOR

The invention relates to mining, in particular to mechanical means for delivery of minerals during their extraction. The invention objective is assurance of flexibility of turn of ore mineral transportation while ensuring operability of the double-chain right angle scraper conveyor. This is achieved by that the conveyor includes hinged pans, a drive, a double-chain traction gear with scrapers having curved supports and holding them guiding boards of sidewalls holding them, tensioners, chains tension force regulating system, group of pans with middle plates dividing cavity to work and idle compartments, the next nearest made with secured to their bottom or top surface (from sides of end faces) resilient segments passing under adjacent plate, in a cavity of the idle branch (or going under an adjacent plate, in the work branch cavity) such that the length of external arc of the resilient element and its rest dimensions during pans turning to maximum angle to changing the transportation direction would prevent cargo spills from the work cavity to idle cavity; tensioners are installed in front and back parts of the conveyor at opposite sides of its axis and are made in the form of an additional sprocket with a chain enveloping it from the main sprocket installed on a telescopic beam relatively to the main sprocket by means of guides and a telescopic assembly, wherein the extension length of one of additional sprockets in the initial, straight state is at least equal to total shift of the rotating pan from each other, this is measured along the axis being most far from the chain rotation centre during complete turn of the transportation direction, wherein the main sprockets are made with the possibility of disconnection from the shaft during the pans turning with spring contact of teeth of a slider - a wheel with the main sprocket, and telescoping assemblies of the tensioners are made in form of a hydraulic cylinders, the work liquid is supplied into their work cavities in proportion to the pans shift from each other along axes of nearest and far chains, respectively. The technical result of the disclosed invention will provide the following: 1) there will be no need in single-chain transportation diagram, thus expanding sphere of use of right angle scraper conveyors; 2) there is a possibility to increase the length of transportation for right angle scraper conveyors, in particular in faces with the length 100-200 m. Изобретение относится к горному делу, а именн