Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Slewing bearing with sealing arrangement

A technology of slewing bearings and sealing devices, which is applied in the direction of rotating bearings, bearings, ball bearings, etc., and can solve problems such as long-term, frequent fixing of machines, and non-replaceable seals

Active Publication Date: 2019-11-01
AB SKF
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The more seals, the more expensive the slewing bearing
The overall weight of bearings sealed in this way increases, which is disadvantageous for some applications
[0006] Another disadvantage is that the seal cannot be replaced underwater
This maintenance operation is expensive and requires frequent fixing of the assembled machine and takes a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Slewing bearing with sealing arrangement
  • Slewing bearing with sealing arrangement
  • Slewing bearing with sealing arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 and figure 2 A slewing roller bearing is shown which can be used in particular in marine applications such as tidal power stations, and which is generally designated with reference numeral 1 and has a large diameter. The slewing bearing defines: an upper side Cu, which is directly exposed to the marine environment; and a lower side Cl, which is arranged in a chassis (not shown).

[0042] The slewing roller bearing includes an inner ring 2, an outer ring 3 and two rows of rolling elements 4, 5. The rolling elements 4, 5 are arranged between these rings 2, 3 to form a radial thrust member capable of transmitting radial force ( radial thrust).

[0043] In the illustrated embodiment, the rolling elements 4, 5 are balls. The rolling elements can be of any other suitable type for the application, for example they can be rollers. The first row of balls 4 engages in raceways 6, 7 provided on the inner ring 2 and outer ring 3, respectively. The second row of balls...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a slewing bearing 1 with a sealing arrangement comprising at least one row of rollers 4, 5 between two relatively-rotatable rings 2, 3. The bearing 1 also has at least one seal 24, 25, 26; and a deflector 40, 55. Each seal has an annular heel 24a, 25a, 26a fixed to the first ring 2; and a sealing lip 24b, 25b, 26b in sliding frictional contact with the second ring 3. The deflector 40, 55 is mounted to a lateral surface 34, 48 of the second ring 3, with a deflecting part 44, 56 that partially surrounds the sealing lip(s) 24b, 25b, 26b. There may be several circumferentially-spaced deflecting parts 44, 56. The deflector 40, 55 can be made of polyether ether ketone (PEEK); and may be fixed to the second ring 3 by at least one screw 43.

Description

technical field [0001] The invention relates to the field of roller bearings. More particularly, the present invention relates to large diameter slewing bearings used in marine applications such as tidal power stations. Background technique [0002] The bearing generally includes an inner ring, an outer ring and seals arranged between the rings to define an annular closed space in which at least one row of rolling elements (such as balls or rollers) is arranged between the rings between. [0003] Slewing bearings are used in corrosive environments, especially in marine applications. The seal prevents external elements such as dirt, abrasive particles, water and marine species (eg, plankton and algae) from entering the interior of the bearing and damaging its component parts. Particles can also get inside the seal itself, which can also shorten seal life. [0004] Typically, the seal is fixed to one ring and includes a sealing lip in sliding contact with the other ring. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16C33/78
CPCF16C33/7823F16C33/783F16C33/586F16C33/7896F16C2300/14F16C2326/30F16C19/10F16C19/166F16C19/181F16C33/581F16C33/7889F16C2208/10F16C33/7886F16C2233/00Y02E10/30F16C33/723F16C33/7853F16C33/80F16C33/805F16C33/7866F16C19/18
Inventor 朱丽叶·德拉比
Owner AB SKF
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com