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

FIELD: machine building.

SUBSTANCE: in disclosed here apron conveyer links of planar chains of intermediate drives are arranged opposite to one another along width of draw 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 planar chain. The planar 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. Magnets are secured on brackets of poles of the conveyer in gaps between pull chains of the planar chain and leaf chains of draw member of the intermediate drive with minimal gaps relative to the deck of the planar chain in the span between the driven sprocket and tightener of the intermediate drive.

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

5 cl, 3 dwg