Large cylinder drying roller and method for producing a large cylinder drying roller

• US 9,885,152 B2
• Filed: 06/02/2014
• Issued: 02/06/2018
• Est. Priority Date: 07/05/2013
• Status: Active Grant

• Current Assignee: Voith Patent Gmbh
• Original Assignee: Voith Patent Gmbh
• Inventors: Schmid, Christian, Consolato, Robson, Brujas, Marco
• Primary Examiner(s): Vaughan, Jason L
• Application Number:
  US14/902,883
• Publication Number:
  US 20160130758A1
• Time in Patent Office: 1,345 Days
• Field of Search: 492 39, 492 46, 492 58, 492 60
• CPC Class Codes: D21F 5/021 Construction of the cylinders
• CPC Class Codes: Y10T 29/49547 Assembling preformed components
• CPC Class Codes: Y10T 29/49549 Work contacting surface element assembled to core
• CPC Class Codes: Y10T 29/49556 Work contacting surface element assembled to end support members

Abstract

A large-cylinder drying roller is provided with a divided hollow shaft for reasons of production. The divided hollow shaft has hollow-shaft parts which are capable of being inserted at both sides into a construction composed of a cylinder shell and caps connected thereto by a weld seam, and are capable of being thereafter connected to one another and to the caps.

Claims

1. A large-cylinder drying roller, comprising:

a cylindrical cylinder shell having two sides;

two caps each being attached to a respective one of said sides of said cylinder shell;

two journals each being provided on a respective one of said caps;

an inner shaft coaxially disposed within said cylinder shell and connecting said journals to said caps, said inner shaft being a hollow shaft divided into at least two hollow-shaft parts and having an interior;

a hollow-shaft connection being accessible from said interior of said hollow shaft;

at least one of;

(i) said two hollow-shaft parts being interconnected or interconnectable by said hollow-shaft connection or

(ii) said two hollow-shaft parts each having a cap-connection flange for connecting to one of said caps on an axial side thereof being opposite said hollow-shaft connection; and

at least one of;

one of said hollow-shaft parts having a part-portion with functional groups all being disposed within said cylinder shell and radially disposed within an axially extending part-cylinder defined by said cap-connection flange or

said hollow shaft having a portion with functional groups all being disposed within said cylinder shell and radially disposed within an axially extending cylinder defined by said two cap-connection flanges.

2. The large-cylinder drying roller according to claim 1, wherein at least one of said hollow-shaft parts is closed off by one of said journals.

3. The large-cylinder drying roller according to claim 1, wherein at least one of said hollow-shaft parts has an inner wall being a component part of said hollow-shaft connection.

4. The large-cylinder drying roller according to claim 1, wherein said caps each have a radial inner side and a radial outer side, and at least one of said caps has a radial extent, extending from said radial inner side to said radial outer side, of between 600 mm and 1100 mm.

5. The large-cylinder drying roller according to claim 1, wherein said caps each have a radial inner side and a radial outer side, and at least one of said caps has a radial extent, extending from said radial inner side to said radial outer side, of between 650 mm and 1000 mm.

6. The large-cylinder drying roller according to claim 1, wherein said hollow shaft has at least one axial wall, and a manhole is provided in at least one of at least one of said caps or said at least one axial wall of said hollow shaft.