Patent ID: 6264022
Filing Date: 2001-07-24
Classification: B65G

Abstract:
A cover belt conveyor for conveying bulk material, the conveyor comprising:a trough shaped basic belt having two bevel portions and a straight, nontroughed area;a cover belt;a drive connection with which either both said basic belt and said cover belt are driven or only said basic belt is driven and said cover belt is carried by a fictional connection with said basic belt;a frame;basic belt support rollers providing said basic belt with a trough shaped support;two inner pressure rollers arranged in the area of a sloping or vertical conveying section;two outer pressure rollers arranged in the area of a sloping or vertical conveying section said two inner pressure rollers and said two outer pressure rollers are always arranged alternatingly one after the other in a direction of conveying individually connected to said frame, pivotably with respect to said lever, wherein said two outer pressure rollers are always arranged connected to said frame individually above said two bevel portions in a direction of pressing, relative to a cross-sectional area of the flow of material being conveyed, and said two inner pressure rollers are always arranged above said straight nontroughed area of said basic belt in the pressing direction;levers, each pressure roller being connected to said frame by a corresponding one of said pivot axis connections and a corresponding one of said levers;springs, each of said levers being directed in the direction of conveying in one plane and obliquely against said cover belt by a corresponding one of said springs in another plane and a pressing force of the springs for said middle pressure rollers (11a) is selected to be stronger because of the larger amount of material being conveyed there than the pressing force of the springs of said two outer pressure rollers;clamps, each of said clamps having two clamp sides for receiving a corresponding one of said pressure rollers for rotating about a clamp axis, each of said clamps being connected to a corresponding one of said levers by a corresponding one of said pivot axis joint connection, through which said pressure roller with its axis of rotation adapts itself automatically to the surface of the bulk material and said pressure rollers are always arranged between an outer extent of said support rollers in the direction of conveying, so that the material being conveyed is carried in all sections of the conveying path.