Patent EP0340192A2 successfully refreshed from Google Patents.
EP0340192A2
Expired / Lapsed
EP
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Loading shoe for a variable-crown roll and a variable-crown roll provided with loading shoes
Assignee: Valmet Technologies Oy
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Filing: 1989-04-26
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Granted: —
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Expires: 2009-04-26
Abstract
Abstract The invention concerns a loading shoe for a variable-crown roll. The roll comprises a stationary roll axle (12), on which the roll mantle (11) is arranged revolving, said mantle being supported in the direction of pressing on the roll axle (12) by means of loading shoes (20) acting upon the inner face of the roll mantle (11), said loading shoes being loaded against the inner face of the roll mantle (11) by means of pressure fluid. The front face (21) of the loading shoe (20) that is placed facing the direction of rotation of the roll mantle (10) is shaped in such a way that, when the fluid flow (A) running on the inner face of the roll mantle (11) collides against the loading shoe (20), said front face (21) of the loading shoe is arranged to guide the fluid flow (A) so as to by-pass the loading shoe (20) from the desired side in order to reduce losses of power resulting from the fluid flows. The invention further concerns a roll (10) provided with loading shoes in accordance with the invention.
Inventors
- 👤 Juhani Niskanen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 13:23
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C13/024; F16C13/026; F16C13/028; D; D21; D21G; D21G1/00; D21G1/02; D21G1/0206; D21G1/0213; D21G1/022
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
152 words
Loading shoe for a variable-crown roll, which comprises a stationary roll axle (12), on which the roll mantle (11) is arranged revolving, said mantle being supported in the direction of pressing on the roll axle (12) by means of loading shoes (20,30) acting upon the inner face of the roll mantle (11), said loading shoes being loaded against the inner face of the roll mantle (11) by means of pressure fluid, characterized in that the front face (21;31,32) of the loading shoe (20,30) that is placed facing the direction of rotation of the roll mantle (10) is shaped in such a way that, when the fluid flow (A) running on the inner face of the roll mantle (11) collides against the loading shoe (20,30), said front face (21,31,32) of the loading shoe is arranged to guide the fluid flow (A) so as to by-pass the loading shoe (20,30) from the desired side.
Claim 2
Dependent Claim
152 words
Loading shoe for a variable-crown roll, which comprises a stationary roll axle (12), on which the roll mantle (11) is arranged revolving, said mantle being supported in the direction of pressing on the roll axle (12) by means of loading shoes (20,30) acting upon the inner face of the roll mantle (11), said loading shoes being loaded against the inner face of the roll mantle (11) by means of pressure fluid, characterized in that the front face (21;31,32) of the loading shoe (20,30) that is placed facing the direction of rotation of the roll mantle (10) is shaped in such a way that, when the fluid flow (A) running on the inner face of the roll mantle (11) collides against the loading shoe (20,30), said front face (21,31,32) of the loading shoe is arranged to guide the fluid flow (A) so as to by-pass the loading shoe (20,30) from the desired side.
Claim 3
Dependent Claim
42 words
Loading shoe as claimed in claim 1, characterized in that the front faces (21,21′;31,32,31′,32′) both at the front edge and at the rear edge of the loading shoe (20,30) are shaped so that they guide the fluid flow (A;A′) to the side.
Claim 4
Dependent Claim
45 words
Loading shoe as claimed in claim 1 or 2, characterized in that the guiding of the fluid flow (A;A′) by the loading shoe (20) is provided by arranging the front face (21;21′) of the loading shoe (20) diagonal relative the axis of the roll (10).
Claim 5
Dependent Claim
32 words
Loading shoe as claimed in claim 1 or 2, characterized in that a guide portion (32,32′) of curved shape has been formed on the front face (31;31′) of the loading shoe (30).
Claim 6
Dependent Claim
40 words
Loading shoe as claimed in any of the preceding claims, characterized in that an additional guide face (33;33′) directed towards the centre of the roll (10) has been formed additionally on the front face (21,31) of the loading shoe (20,30).
Claim 7
Dependent Claim
147 words
Variable-crown roll provided with loading shoes as claimed in any of the preceding claims, comprising a stationary roll axle (12), on which the roll mantle (11) is arranged revolving, said mantle being supported in the direction of pressing on the roll axle (12) by means of loading shoes (20,30) acting upon the inner face of the roll mantle (11), said loading shoes being loaded towards the inner face of the roll mantle (11) by means of pressure fluid, characterized in that the loading shoes (20,30) are shaped so that they guide the fluid flow (A;A′) running on the inner face of the roll mantle (11) to the side in the axial direction of the roll (10), so that the loading shoes (20,30) are arranged to guide said fluid flow (A;A′) towards a fluid-drain opening provided in the roll (10) or towards a drain-fluid collecting point or equivalent.
Claim 8
Dependent Claim
44 words
Variable-crown roll as claimed in claim 6, characterized in that the fluid-drain opening is formed at one end of the roll (10) and that each loading shoe (20,30) is arranged to guide the fluid flow (A) in the same direction towards said drain opening.
Claim 9
Dependent Claim
49 words
Variable-crown roll as claimed in claim 6, characterized in that a fluid-drain opening is provided at each end of the roll (10) and that the loading shoes (20,30) are arranged to guide the fluid flow (A;A′) towards said drain openings in relation to the centre line of the roll.
Claim 10
Dependent Claim
49 words
Variable-crown roll as claimed in claim 6, characterized in that the roll (10) is provided with several drain-fluid collecting points and that the loading shoes (20,30) are grouped so that the loading shoes (20,30) placed closest to each collecting point guide the fluid flow (A;A′) towards said collecting point.
References Cited (Backward Citations)
No citation records indexed.
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