Hydraulic drive for a sliding combustion grate

Abstract

The invention relates to a hydraulic drive for a water-cooled sliding combustion grate. Each displaceable grate stage ( 6 ) is connected to at least one connection rod ( 30 ) supported at the other end thereof on a crank ( 31 ), wherein the associated crankshaft ( 32 ) is supported in a bushing ( 33 ) penetrating the side wall ( 2 ) of the grate construction. A crank ( 34 ) connected to the piston ( 35 ) of a hydraulic cylinder-piston unit ( 36, 35 ) is seated on the other side of the crankshaft ( 32 ), outside of the actual grate construction of the associated grate run, where said hydraulic cylinder-piston unit is disposed. The hydraulic components are thereby spaced further away from grate plates, and not exposed to abrasion. Said components, being disposed remotely from the grate plates ( 6 ), can also be replaced during operation of the grate.

1 . A hydraulic drive for a water-cooled sliding combustion grate in which every movable grate stage ( 6 ) is connected to at least one connection rod ( 30 ) supported at the other end thereof on a crank ( 31 ), wherein the associated crankshaft ( 32 ) is supported in a bushing ( 33 ) penetrating the side wall ( 2 ) of the grate construction and a crank ( 34 ) connected to the piston ( 35 ) of a hydraulic cylinder-piston unit ( 36 , 35 ) located on the grate construction is seated on the other side of the crankshaft ( 32 ), outside of the actual grate construction of the associated grate run. 
     
     
         2 . Hydraulic drive for a water-cooled sliding combustion grate according to  claim 1 , characterised in that the axle of the bushing ( 33 ) runs at a right angle to the direction of motion of the movable grate plate ( 6 ) and the crank ( 31 ) for the connection rod ( 30 ) at the crankshaft ( 32 ) is mounted at the other end of the crankshaft ( 32 ) for the pistons ( 35 ) of the hydraulic cylinder-piston unit ( 35 , 36 ) by turning the crank ( 34 ) by 120° to 180°. 
     
     
         3 . Hydraulic drive for a water-cooled sliding combustion grate according to  claim 1 , characterised in that the bushing ( 33 ) contains the replaceable bearing ( 40 ) for the inserted crankshaft ( 32 ) and the cranks ( 31 , 34 ) can be plugged in at the crankshaft ends and can be secured with a lock nut. 
     
     
         4 . Hydraulic drive for a water-cooled sliding combustion grate according to  claim 1 , characterised in that the bushing ( 33 ) has at least two vane struts ( 41 ) radially distanced from it which are integrated in the corresponding recesses in the side wall ( 1 , 2 ) of the grate construction and are welded to it. 
     
     
         5 . Hydraulic drive for a water-cooled sliding combustion grate according to  claim 1 , characterised in that, for two grate runs ( 28 , 29 ) lying next to one another at which the hydraulic cylinder-piston unit ( 35 , 36 ) is located underneath a grate run ( 29 ), its own as well as its hydraulic lines on its upper side are surrounded by a sheet-metal case ( 42 ) so that only the piston rod ( 35 ) protrudes from the sheet-metal case ( 42 ). 
     
     
         6 . Hydraulic drive for a water-cooled sliding combustion grate according to  claim 1 , characterised in that two such drives are arranged for every movable grate plate ( 6 ). 
     
     
         7 . Hydraulic drive for a water-cooled sliding combustion grate according to  claim 1 , characterised in that the piston-cylinder units of the individual drives are continuously mounted in different directions.