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US 2009/0211682 A1Published application
Device, in particular rotary leadthrough
OwnerJoachim Sobotzikinventor
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OwnerJoachim Sobotzikinventor
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A device (30, 30′), in particular a rotary leadthrough for a tyre-filling system, is proposed. The device (30, 301) has a rotatable body (34, 34′) and a stationary body (32, 32′) and at least one chamber (106, 108, 106′, 108′) formed between the rotatable body (34, 34′) and the stationary body (32, 32′). The at least one chamber (106, 108, 106′, 108′) is delimited by opposite boundary surfaces (48, 54, 48′, 54′) of the bodies (32, 34, 32′, 34′) and by at least two sealing means (104, 104′) guided between the boundary surfaces (48, 54, 48′, 54′). At least one duct (46, 50, 52, 56, 46′, 50′, 52′, 56′) is formed in the stationary and in the rotatable body (32, 34, 32′, 34′) and issues into the at least one chamber (106, 108, 106′, 108′) between the sealing means (104, 104′). It is proposed to use sealing means (104, 104′) which are designed as brush seals. The device (30, 30′) has the advantage that, as compared with the solutions known in the prior art, there is no need for a separate pressure control duct for pressing down sealing means (104, 104′) or for providing a pressure-tight chamber (106, 108, 106′, 108′).
Device, in particular a rotary leadthrough for a tyre-filling system, with a body (34, 34′) rotatable about an axis of rotation (27) and having a first boundary surface (48, 48′), with a body (32, 32′) stationary with respect to the rotatable body (34, 34′) and having a second boundary surface (54, 54′), with at least one chamber (106, 108, 106′, 108′) formed between the rotatable body (34, 34′) and the stationary body (32, 32′), the at least one chamber (106, 108, 106′, 108′) being delimited by the boundary surfaces (48, 54, 48′ 54′) of the bodies (34, 32, 34′, 32′) and by at least two sealing means (104, 104′) extending between the boundary surfaces (34, 32, 34′, 32′), and with at least one duct (46, 50, 52, 56, 46′, 50′, 52′, 56′) formed in the stationary and in the rotatable body (32, 34, 32′, 34′) and issuing into the at least one chamber (106, 108, 106′, 108′) between the sealing means (104, 104′), characterized in that the sealing means (104, 104′) are designed as brush seals.
Device according to one of the preceding claims, characterized in that, on at least one of the boundary surfaces (48, 54, 48′, 54′), depressions (58, 60, 62, 58′, 60′, 62′) are formed, in which the brush seals (104, 104′) are guided, fixed in position, between the boundary surfaces (48, 54, 48′, 54′).
Device according to one of the preceding claims, characterized in that the brush seals (104, 104′) have metallic and/or non-metallic fibres or threads.
Device according to one of the preceding claims, characterized in that the at least one duct (46, 50, 52, 56, 46′, 50′, 52′, 56′) is designed as a discharge and/or supply and/or control line operated by a pressure medium.
Device according to one of the preceding claims, characterized in that the at least one duct (46, 50, 52, 56, 46′, 50′, 52′, 56′) can be connected to a tyre (26) fillable with pressure medium.
Device according to one of the preceding claims, characterized in that the at least one duct (46, 50, 52, 56, 46′, 50′, 52′, 56′) can be connected to a valve (47) activatable by pressure medium.
Device according to one of the preceding claims, characterized in that the at least one duct (46, 50, 52, 56, 46′, 50′, 52′, 56′) can be connected to a pressure-medium source (110), in particular to a compressed-air source.
Device according to one of the preceding claims, characterized in that the stationary body (32, 32′) is connected to a stationary axle body (36).
Device according to one of the preceding claims, characterized in that the boundary surfaces (48, 54, 48′, 54′) extend radially with respect to the axis of rotation (27).
Vehicle with a device (30, 30′) according to one or more of the preceding claims.
Dependencies are inferred from the claim text.