# US 10,245,591 B2 · Bearing element suitable for supporting a grinding table in a roller mill

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- Number: US 10,245,591 B2
- Document ID: US10245591B2
- Status: Granted
- Kind: B2
- Application number: 15/730,346
- Filed: 2017-10-11
- Published: 2018-04-12
- Granted: 2019-04-02
- Earliest claimed: 2016-10-12
- Assignees: Gebr. Pfeiffer AG
- Applicants: Gebr. Pfeiffer SE
- Inventors: Dirk Hoffmann; Ralf Frankenberger; Karl-Heinz Schütte
- Web page: https://patentgrep.com/patent/US10245591B2

## CPC

- B02C 15/006: {Ring or disc drive gear arrangement}
- B02C 15/00: Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs {(high-speed drum mills B02C19/11)}
- B02C 15/003: {Shape or construction of discs or rings}
- F01D 25/168: {for axial load mainly}
- F16C 17/035: {the segments being integrally formed with, or rigidly fixed to, a support-element}
- F16C 17/065: {the segments being integrally formed with, or rigidly fixed to, a support-element}
- F16C 27/08: primarily for axial load, e.g. for vertically-arranged shafts
- F16C 33/06: Sliding surface mainly made of metal (F16C33/24 - F16C33/28 take precedence; {casting metal bearing surfaces B22D15/02, B22D19/08})
- F16C 33/108: {with a plurality of elements forming the bearing surfaces, e.g. bearing pads}
- B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02})
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A bearing element suitable for supporting a grinding disk in a roller mill, comprising a plate-like or disk-shaped base element, an annular disk and a spacer element, wherein the annular disk is disposed substantially parallel to the base element and at a distance from the base element, and is connected at its bottom using an annular spacer element with the base element, and the annular disk has means on its upper side for receiving the axial bearing segments, whereby the spacer element is designed as an annular strip extending in the axial direction and has a plurality of spaced-apart arches in the circumferential direction, whose openings point towards the base element.

## Claims

### Claim 1

A bearing element suitable for supporting a grinding table in a roller mill, comprising
a plate or disk-shaped base element,
an annular disk,
a spacer element and axial bearing segments, wherein the annular disk is disposed substantially parallel to the base element and spaced apart from the base element, and is connected at its bottom by means of an annular spacer element with the base element,
characterized in that the annular disk has means on its upper side for receiving the axial bearing segments and that the spacer element is designed as an annular strip extending in the axial direction and has a plurality of spaced-apart arches in the circumferential direction, the openings of which point towards the base element.

### Claim 2 (depends on 1)

The bearing element as claimed in claim 1, wherein the number of the arches of the spacer element corresponds to the number of axial bearing segments, which are secured on the annular disk.

### Claim 3 (depends on 1)

The bearing element according to claim 1, wherein the plurality of spaced-apart arches are in the shape of arcades.

### Claim 4 (depends on 1)

The bearing element according to claim 1, wherein the spacer element has at least one pillar, the length (u) of which is larger in the circumferential direction than the thickness (t) in radial direction.

### Claim 5 (depends on 1)

The bearing element as claimed in claim 1, wherein the spacer element has at least one pillar with a side wall, which is enlarged towards the region of the base element.

### Claim 6 (depends on 5)

The bearing element according to claim 5, wherein in the region of the base element the side wall of the at least one pillar is enlarged like an arch.

### Claim 7 (depends on 1)

The bearing element as claimed in claim 1, wherein a radial bearing dome is provided on the base element.

### Claim 8 (depends on 7)

The bearing element as claimed in claim 7, wherein a plurality of ribs is arranged around the radial bearing dome, the plurality of ribs extending in the radial direction from the radial bearing dome.

### Claim 9 (depends on 8)

The bearing element according to claim 8, wherein a rib has a rib arm which turns away from the radial bearing dome and is connected to the annular disk.

### Claim 10 (depends on 1)

A grinding table drive arrangement comprising a bearing element according to claim 1.