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Slewing bearing with sealing arrangement

A technology of slewing bearings and seals, applied in the direction of rotating bearings, bearings, ball bearings, etc., can solve the problems of frequent machine fixing, long time, and total weight increase.

Pending Publication Date: 2019-11-01
AB SKF
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  • 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

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  • Slewing bearing with sealing arrangement
  • Slewing bearing with sealing arrangement

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 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).

[0034] 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).

[0035] 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 5 engages in r...

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PUM

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Abstract

The invention relates to a slewing bearing with a sealing arrangement having a first ring (2), a second ring (3), and at least one row of rolling elements (4, 5) arranged between said rings. At leasttwo seals (26, 27, 28) each have an annular heel (26a, 27a, 28a) mounted on a cylindrical frontal surface (20) of first ring and an oblique sealing lip (26b, 27b 28b) in sliding frictional contact with part of the second ring. The slewing bearing further includes a guiding ring (38, 39) arranged between two of the seals that has a flange (38a, 39a) with a support surface for the sealing lip of a first seal and an annular axial collar (38b, 39b) that radially blocks the annular heel (26a, 27a) of the other seal (26, 27) in a radial outwards direction.

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

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Application Information

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IPC IPC(8): F16C33/78F16C41/00
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·德拉比克里斯蒂安·科格勒
Owner AB SKF