APRON CONVEYER Russian patent published in 2011 - IPC E21F13/08 B65G19/26 

FIELD: machine building.

SUBSTANCE: in disclosed here apron conveyer links of leaf chains of intermediate drives are arranged opposite to one another along width of pull member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the leaf chain. The leaf chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them.

EFFECT: increased reliability of operation of apron conveyer of extended length.

5 cl, 3 dwg