SCRAPER CONVEYOR TELESCOPIC DEVICE Russian patent published in 2003 - IPC

FIELD: conveyor engineering. SUBSTANCE: invention relates to conveyors with chains brought out of guides to provide unobstructed passage of scraper chain along transportation surface in place of telescopic joint. It can be used in mine re-loaders. Proposed telescopic device of scraper conveyor contains drive secured on extensible frame, fixed frame connected with base plate, bottom fitted in longitudinal slots of extensible frame for displacement in slots under action of hydraulic jacks, and elements to compensate for clearance in split plane of sliding of scraper chain to provide unobstructed passage of chain over butt joints, all these devices being mounted on common base plate. Bottom is cantilever mounted on cross hood connecting sides of extensible frame and made in form of common table fitted by its cantilever part into cross slot made ion fixed frame for longitudinal displacement relative to each other by value of stroke of hydraulic jacks, with overlapping of clearance of split plane. Cantilever bottom is provided with cross shields enclosing sides of fixed frame from outside by at least size of draw-apart distance, and hydraulic jacks are connected by one end with movable frame and by other end, with common base plate. EFFECT: improved reliability of device, provision of reliable protection against penetration of culm into idle space of conveyor and spilling of transported material from working chute. 5 cl, 9 dwg