ROLLER DRIVE END AND METHOD FOR MOUNTING A DRIVE UNIT TO A DRIVE JOURNAL

Abstract

A drive end system associated with a roller for producing and/or treating a material web, in particular a paper web or paperboard web, includes a roller casing and a drive journal which is connected to the roller casing in order to drive said casing. The drive journal stands in a driven connection to a drive unit or can be switched into such a driven connection. The drive end system also includes a drive flange which is provided for the non-rotatable connection of the drive journal and the drive unit. The drive flange is press-fitted and/or shrink-fitted onto the drive journal such that a drive-power-transmitting, friction-locked connection is formed between the joint faces of the drive flange and the joint faces of the drive journal by way of an interference fit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become more apparent and the invention will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawing, wherein:

FIG. 1 is a sectional view of a drive end of a roller according to the present invention.

Corresponding reference characters indicate corresponding parts throughout the several views. The exemplification set out herein illustrates embodiment of the invention, and such exemplification is not to be construed as limiting the scope of the invention in any manner.

DETAILED DESCRIPTION OF THE INVENTION

Referring now to the drawing, FIG. 1, there is shown a hollow-cylinder-shaped roller casing 1 of a drying cylinder, said casing being closed by a cylinder cap 18 which leads into a drive journal 2. The drive journal 2 is mounted in a bearing 11 in the form of a rolling bearing. The bearing 11 has a multiplicity of rolling elements which are enclosed by a bearing housing 19. The bearing housing 19 is mounted in turn on a foundation or support 13.

In this case the drive journal 2 is mounted in the bearing 11 indirectly by way of a drive flange 7. The drive flange 7 is thus enclosed like a sandwich or at both ends between the drive journal 2 and the inner ring of the bearing 11. The drive flange 7 encloses the drive journal 2 fully over the entire circumference of the drive journal 2, from the axially inner end 6 of the bearing 11 or bearing housing 19 to the axially outer end face 5 of the drive journal 2.

According to experience the drive flange 7 is press-fitted and/or shrink-fitted onto the drive journal 2, which in this case is tapered in steps in the direction of its axially outer end 5, wherein provision can also be made alternatively for a continuous taper, a corresponding expansion or a constant diameter. In this case the drive flange 7 extends somewhat beyond the axially outer end face 5 of the drive journal 2.

Mounted on the end face of the drive flange 7, namely in the region of the axially outer end face 5 of the drive journal 2, is an intermediate flange 24. In this case the intermediate flange is bolted to the end face of the drive flange 7.

Mounted on the intermediate flange 24 is the rotor 9 of the drive unit 3, said rotor being enclosed by the stator 10 in circumferential direction. In the case in question the rotor 9 is bolted likewise to the end face of the intermediate flange 24 so that, looking in the axial direction, the intermediate flange 24 is enclosed on both sides, once by the drive flange 7 and once by the rotor 9.

The stator 10 is supported in a preselected fixed point 22 by way of a torque arm 12 on the support 13. In this case the supporting forces can be dissipated into the support in the plane 23 of the axial center of the bearing 11. Of course, the dissipation of supporting forces into the support 13 can also be axially offset from the plane 23.

On the embodiment presented, the roller casing 1, the drive journal 2, the components of the bearing 11, the intermediate flange 24, the rotor 9 and the stator 10 are arranged concentrically and axially flush with each other over the axial longitudinal axis 20. This results in the smallest possible unbalance during rotation of the roller.

Although this is not illustrated, the rotor 9 can also be mounted directly on the drive flange 7, thus dispensing with the intermediate flange 24. Alternatively it is possible to provide more elements between the drive flange 7 and the drive unit 3 as long as a drive connection is established between the driving part of the drive unit 3 (the rotor 9) and the drive journal 2.

According to another embodiment (not illustrated), the rotor 9 of the drive unit 3 is constructed in a single piece or integrally with the drive flange 7 so that the rotor 9 can be press-fitted and/or shrink-fitted onto the drive journal 2 in particular without an additional threaded connection being necessary.

While this invention has been described with respect to at least one embodiment, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.

Claims

1. A drive end system associated with a roller for at least one of producing and treating a fibrous material web, said drive end system comprising: a roller casing;a drive journal connected to said roller casing for driving said roller casing, said drive journal including a plurality of joint faces;a drive unit being one of in a driven connection and configured for being switched into said driven connection to said drive journal; anda drive flange forming a non-rotatable connection of said drive journal and said drive unit, said drive flange including a plurality of joint faces, said drive flange forming at least one of a press-fit and a shrink-fit onto said drive journal such that a drive-power-transmitting, friction-locked connection is formed between said plurality of joint faces of said drive flange and said plurality of joint faces of said drive journal with an interference fit.

2. The drive end system according to claim 1, wherein said drive unit is mounted overhung on said drive journal using said drive flange.

3. The drive end system according to claim 2, further comprising a torque arm, said drive unit being free of at least one of any other bracing points and any other bearing points except for said torque arm, said drive unit being braced against twisting using said torque arm.

4. The drive end system according to claim 3, wherein said drive unit includes a stator.

5. The drive end system according to claim 1, wherein said drive flange is connected to said drive journal solely with said interference fit.

6. The drive end system according to claim 1, further comprising an intermediate flange, said drive journal including an axially outer end face, said intermediate flange being mounted on said drive flange at least near said axially outer end face of said drive journal, said drive unit being connected to said intermediate flange.

7. The drive end system according to claim 6, wherein said drive flange includes an end face, said intermediate flange being bolted on said end face of said drive flange.

8. The drive end system according to claim 6, wherein said drive unit includes a rotor.

9. The drive end system according to claim 6, wherein said intermediate flange includes an end face, said drive unit being bolted on said end face of said intermediate flange.

10. The drive end system according to claim 6, further comprising a bearing, said drive journal being rotatably mounted in said bearing, said drive flange enclosing said drive journal starting from said axially outer end face of said drive journal in a direction of said bearing and radially within said bearing in a circumferential direction such that said drive journal is mounted indirectly in said bearing using said drive flange.

11. The drive end system according to claim 10, wherein said bearing is one of a tapered-roller bearing, a self-aligning roller bearing, and a toroidal roller bearing.

12. The drive end system according to claim 10, wherein said bearing includes an axially inner side, said drive flange adjoining one of flush and essentially flush with said bearing on said axially inner side of said bearing.

13. A method for mounting a drive unit on a drive journal of a roller for at least one of producing and treating a fibrous material web, said method comprising the steps of: at least one of press-fitting and shrink-fitting a drive flange onto the drive journal such that a drive-power-transmitting, friction-locked connection is formed between a plurality of joint faces of the drive journal and a plurality of joint faces of said drive flange with an interference fit; andconnecting the drive unit to said drive flange in a drive connection.

14. The method according to claim 13, wherein the drive unit with its rotor is mounted at least one of friction-locked and form-locked on one of said drive flange and an intermediate flange connected to an end face of said drive flange.

15. The method according to claim 14, wherein said intermediate flange is bolted on said end face of said drive flange.

16. The method according to claim 14, wherein the drive unit with its rotor is bolted to an end face of said intermediate flange.

17. The method according to claim 14, further comprising the step of one of supplementing and replacing an existing drive unit by mounting one of the drive unit and a plurality of the drive units.

18. The method according to claim 17, wherein said existing drive unit simultaneously drives a plurality of rollers.

19. The method according to claim 13, wherein the drive unit is mounted overhung on the drive journal using said drive flange.

20. The method according to claim 13, further comprising the steps of: pulling a bearing onto said drive flange; andmounting said bearing in a fixed position.

21. The method according to claim 20, wherein said steps of pulling and mounting are after at least one of said press fitting and said shrink-fitting said drive flange onto the drive journal.

22. The method according to claim 21, wherein said step of mounting includes using a support.