# US 10,502,195 B2 · Clamping apparatus for securing a main bearing of a wind turbine during an installation and/or repair procedure

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- Number: US 10,502,195 B2
- Document ID: US10502195B2
- Status: Granted
- Kind: B2
- Application number: 15/498,655
- Filed: 2017-04-27
- Published: 2018-11-01
- Granted: 2019-12-10
- Earliest claimed: 2017-04-27
- Assignees: General Electric Company
- Applicants: General Electric Company
- Inventors: Gregory Clarence Thomas; Hunter Ryan Anderson; Darrick Adam Vanderwalker; Waylon James Esser; Guido van Duelmen; Andreas Thal
- Web page: https://patentgrep.com/patent/US10502195B2

## CPC

- F03D 80/70: Bearing or lubricating arrangements
- F03D 13/10: Assembly of wind motors; Arrangements for erecting wind motors
- F16C 19/385: {with two rows, i.e. double-row tapered roller bearings}
- F16C 33/78: with a diaphragm, disc, or ring, with or without resilient members {(F16C33/761 takes precedence)}
- F16C 41/001: {Integrated brakes or clutches for stopping or coupling the relatively movable parts}
- F16C 43/04: Assembling rolling-contact bearings
- F05B 2230/60: Assembly methods
- F05B 2230/80: Repairing, retrofitting or upgrading methods
- F05B 2240/50: Bearings
- F05B 2240/54: Radial bearings
- F05B 2240/57: Seals
- F05B 2240/60: Shafts
- F05B 2260/30: Retaining components in desired mutual position
- F16C 2226/10: Force connections, e.g. clamping
- F16C 2360/31: Wind motors
- F16C 2361/45: Brakes
- Y02E 10/72: Wind turbines with rotation axis in wind direction
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- F03D: WIND MOTORS
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The present disclosure is directed to a clamping apparatus for securing a main bearing of a wind turbine. The clamping apparatus includes a clamp member configured for securement to a seal ring arranged with the main bearing, at least one clamping fastener configured through the clamp member, and at least one jacking fastener configured through the clamp member. Thus, the clamping fastener is configured to tighten the clamp member around the seal ring, whereas the jacking fastener is configured to push against the main bearing when tightened so as to maintain the main bearing in place during and installation and/or repair procedure.

## Claims

### Claim 1

A drivetrain assembly for a wind turbine, comprising:
a main shaft;
a main bearing assembly comprising a main bearing and a cover, the main bearing comprising an inner race, an outer race, and a plurality of roller elements configured therebetween;
a seal ring arranged upwind of and adjacent to the main bearing;
a clamping apparatus arranged between the cover of the main bearing assembly and the roller bearings thereof, the clamping apparatus comprising:
a clamp member secured to the seal ring;
at least one clamping fastener configured through the clamp member, the clamping fastener configured to tighten the clamp member around the seal ring; and,
at least one jacking fastener configured through the clamp member, the jacking fastener configured to push against the main bearing when tightened so as to maintain the main bearing in place during an installation or repair procedure.

### Claim 2

A system for securing an installed main bearing of a wind turbine, the system comprising:
a clamp member configured for securement to a seal ring arranged with the main bearing after a cover of the main bearing is separated and slid away therefrom, the clamp member comprising at least one upwind plate member and at least one downwind plate member, the at least one upwind plate member comprising a lip, the at least one upwind plate member further comprising an outer plate and one or more inner plates arranged in a stacked configuration, the one or more inner plates comprising a height that is less than a height of the outer plate, so as to define a gap with the lip of the upwind plate member that receives a lip of the seal ring;
at least one clamping fastener configured through the clamp member, the at least one clamping fastener configured to tighten the clamp member around the seal ring;
at least one jacking fastener configured through the clamp member, the at least one jacking fastener configured to push against the main bearing when tightened so as to maintain the main bearing in place during an installation or repair procedure; and,
wherein the at least one downwind plate member is configured to engage a downwind side of the seal ring when tightened by the at least one clamping fastener.

### Claim 3 (depends on 1)

The system of claim 1, wherein the outer plate and the one or more inner plates are secured together via at least one of bonding or welding.

### Claim 4 (depends on 1)

The system of claim 1, further comprising at least one spacer positioned between the upwind and downwind plate members.

### Claim 5 (depends on 4)

The system of claim 4, further comprising a plurality of threaded jacking fasteners and a plurality of clamping fasteners.

### Claim 6 (depends on 5)

The system of claim 5, further comprising at least one spacer arranged with each of the plurality of jacking fasteners and each of the plurality of clamping fasteners.

### Claim 7 (depends on 5)

The system of claim 5, wherein the plurality of jacking fasteners are positioned along edges of the upwind and downwind plate members and the plurality of clamping fasteners are positioned between the jacking fasteners.

### Claim 8 (depends on 1)

The system of claim 1, wherein the main bearing comprises at least one of a tapered roller bearing, a spherical roller bearing, or a ball bearing.

### Claim 9

A method for securing a main bearing of a wind turbine, the method comprising:
separating a cover of the mail bearing therefrom;
installing a system for securing an installed main bearing having a clamp member, at least one clamping fastener, and at least one jacking fastener, wherein the clamp member comprises at least one upwind plate member and at least one downwind plate member, the at least one upwind plate member comprising a lip, the at least one downwind plate member configured to engage a downwind side of the seal ring when tightened by the clamping fastener, the at least one upwind plate member further comprising an outer plate and one or more inner plates arranged in a stacked configuration, the one or more inner plates comprising a height that is less than a height of the outer plate, so as to define a gap with the lip of the upwind plate member that receives a lip of the seal ring;
securing the clamp member to the seal ring arranged with the main bearing via the at least one clamping fastener, the at least one clamping fastener being configured through the clamp member; and
tightening the jacking fastener such that the jacking fastener pushes against the ruin bearing so as to maintain the main bearing in place during an installation or repair procedure, wherein the at least one jacking fastener is configured through the clamp member.

### Claim 10 (depends on 9)

The method of claim 9, wherein the clamping and jacking fasteners are tightened when installed.

### Claim 11 (depends on 10)

The method of claim 10, wherein securing the clamp member to the seal ring arranged with the main bearing via the clamping fastener further comprises:
loosening the clamping and jacking fasteners to separate the upwind plate member from the downwind plate member;
sliding the lip of the upwind plate member under a lip of the seal ring on an upwind side thereof;
retightening the clamping fastener to clamp the clamp member to the seal ring; and,
retightening the jacking fastener to push an end of the jacking fastener against an outer race of the main bearing.

### Claim 12 (depends on 9)

The method of claim 9, wherein the clamping apparatus further comprises at least one spacer positioned between the upwind and downwind plate members.

### Claim 13 (depends on 12)

The method of claim 12, wherein the clamping apparatus further comprises a plurality of threaded jacking fasteners and a plurality of clamping fasteners.

### Claim 14 (depends on 13)

The method of claim 13, wherein the clamping apparatus further comprises at least one spacer arranged with each of the plurality of jacking fasteners and each of the plurality of clamping fasteners.