Hydraulic axial bearing

F - Mech Eng,Light,Heat,Weapons – 16 – C

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F16C 32/06 (2006.01)

Patent

CA 2212433

A hydraulic axial bearing for a radially-mounted axle (1), which has a flange (1a) incorporating an outer, substantially axial sealing gap (7) formed between the flange and a sealing ring (3), and an inner, substantially radial sealing gap (9), formed between the axle and a sealing ring (5a) confined in the bearing housing (5). A hydraulic pressure medium is supplied, through the line (D) to the cavity (11) formed between the sealing gaps, whereupon the medium is evacuated through the gaps, under a considerable drop in pressure, to absorb axial loadings applied to the axle. The outer axial gap can be controlled by an additional pressure medium that is supplied to the pressure chamber (5b) via the line (D). This permits the pressure in the cavity (11) and consequently the axial loadings absorbed, to be regulated.

L'invention se rapporte à un palier axial hydraulique pour un essieu monté radialement (1), ce palier comportant un rebord (1a) comprenant un espace d'étanchéité externe, sensiblement axial (7) formé entre le rebord et une bague d'étanchéité (3), et un espace d'étanchéité interne, sensiblement radial (9) formé entre l'essieu et une bague d'étanchéité (5a) renfermée dans le corps (5) du palier. Un milieu délivrant une pression hydraulique est acheminé par la conduite (D) et amené vers la cavité (11) formée entre les espaces d'étanchéité. Le milieu est ensuite évacué par les espaces, grâce à une chute de pression considérable, afin d'absorber les charges axiales appliquées sur l'essieu. L'espace axial externe peut être réglé par un milieu de pression supplémentaire qui est acheminé par la conduite (D) dans la chambre sous-pression (5b). Ceci permet de réguler la pression de la cavité (11) et, par conséquent, les charges axiales absorbées.

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