Pump having unidirectional tapered land thrust bearing cluster

Details Pump having unidirectional tapered land thrust bearing cluster Pump having unidirectional tapered land thrust bearing cluster

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 1/14 (2006.01) F16C 17/04 (2006.01) F16C 17/06 (2006.01)

Patent

CA 2283224

This invention pertains to a single-piece unidirectional tapered land thrust bearing cluster for use in high-pressure positive-displacement swashplate piston pumps and the like. The bearing cluster has a plurality of identical bearing pads integral to the bearing cluster. Each bearing pad includes a tapered section, a flat section and a fluid communicating slot integral therewith. During operation of the pump the swashplate camming surface rotates relative to the bearing cluster which develops a pressurized load-carrying hydrodynamic film of decreasing thickness and increasing strength betwwen a back plate of the rotating swashplate and the bearing cluster.

La présente invention concerne une couronne monobloc de bague de butée à plages unidirectionnellement biseautées destinées à des pompes haute pression à piston à plateau oscillant à déplacement positif et similaires. La couronne de la bague comporte une pluralité de coussinets paliers identiques faisant partie intégrante de la couronne de la bague. Chaque coussinet palier inclut une partie biseautée, une partie plate, et une fente de communication fluidique qui font partie intégrante du coussinet palier. Pendant le fonctionnement de la pompe, la surface de came du plateau oscillant tourne par rapport à la couronne de bague, développant ainsi un film hydrodynamique pressurisé porteur de charge qui se caractérise par une diminution d'épaisseur et une augmentation de puissance entre une contre-plaque du plateau oscillant en rotation et la couronne de bague.

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