System of oil feed ducts for a variable-crown roll

D - Textiles – Paper – 21 – G

Patent

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Details

D21G 1/02 (2006.01) F16C 13/00 (2006.01) F16N 21/00 (2006.01)

Patent

CA 2195461

The invention concerns a system of oil feed ducts for a variable-crown roll, which roll (10) comprises a stationary roll axle (11) and a roll mantle (12) that is arranged revolving on said axle and that es supported on the roll axle (11) by means of hydraulic loading elements (13 1 ..13n) acting upon the inner face (12') of the roll mantle in the radial direction, by means of which loading elements the axial profile of the roll mantle (12) can be regulated. Into the roll axle (11), an axial through hole (16) has been formed, which communicates with the cylinder bores (14 1...14n) or equivalent of the hydraulic loading elements (13 1...13n) through substantially radial bores (15 1...15n) or equivalent ducts (56a). In the axial through hole (16), at least through one of the roll (10) ends, at least oil feed pipes (21 1...21n) have been installed, through which pipes a pressure fluid is arranged to be fed to the hydraulic loading elements (13 1...13n). Into the axial through hole (16) in the roll axle (11), at the location of the loading elements (13 1...13n), an intermediate flange (53) or equivalent has been installed, which operates as a distributor piece, which is connected with the loading element (13 1...13n), and to which the oil feed pipe (21 1...21n) passing to the loading element is connected so that, through said distributor piece, the pressure fluid can be passed to the loading (13t ..130), whereby the loading produced by means of said loading element (13 1...13n) is adjustable in the desired way

Cette invention concerne un système de conduites d'alimentation en huile pour cylindre à bombage variable, lequel cylindre (10) comprend un essieu stationnaire (11) de cylindre ainsi qu'un revêtement (12) de cylindre monté rotatif sur ledit essieu (11) et supporté sur ce dernier par des éléments de charge hydrauliques (131 à 13 n). Ces éléments agissent dans un sens radial sur la surface interne (12') du revêtement (12) du cylindre, et permettent de modifier le profil axial dudit revêtement (12) du cylindre. L'essieu du cylindre (11) est traversé de part en part par un perçage axial (16) en communication avec les alésages cylindriques (141 à 14n), ou leurs équivalents, des éléments de charge hydrauliques (131 à 13n) par l'intermédiaire d'alésages sensiblement radiaux (151 à 15n) ou de conduites équivalentes (56a). Dans le perçage axial (16), et au moins à travers l'une des extrémités du cylindre (10), sont disposés au moins quelques tuyaux d'alimentation en huile (211 à 21n) à travers lesquels un fluide sous pression est envoyé aux éléments de charge hydrauliques (131 à 13n). Dans ce même perçage axial (16) traversant de part en part l'essieu (11) du cylindre, au niveau des éléments de charge (131 à 13n), se trouve une bride intermédiaire (53), ou son équivalent, laquelle agit comme un élément de répartition raccordé à l'élément de charge (131 à 13n), et à laquelle le tuyau d'alimentation en huile (211 à 21n) menant à l'élément de charge est raccordé de manière à ce que le fluide sous pression puisse être envoyé audit élément de charge (131 à 13n) à travers ledit élément de répartition. La charge exercée par lesdits éléments de charge (131 à 13n) peut être ajustée comme on le désire.

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