Paste type lubrication
AssigneeKone Corporation
InventorsRaimo Pelto-Huikko, Anssi Laukkanen, Kenneth Holmberg, Timo Hakala
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Abstract
In a paste type lubrication between a steel wire rope and a rope groove of a pulley, is applied a paste lubricant which contains oil and small solid particles. Solid particles could be of a wide variety sizes and they are small enough to at least partly fit into the valleys between the peaks of surface roughness of the ropes or the rope groove.
Claims20
A paste lubricant between a steel wire rope and a rope groove of a pulley, wherein the paste lubricant comprises oil and small solid particles, the small solid particles being of a wide variety of sizes, and being small enough to at least partly fit into valleys between peaks of surface roughness of the steel wire rope or the rope groove, and
- wherein the small solid particles comprise particles whose hardness is greater than 4 on the Mohs scale, or equal to or greater than the hardness of the steel of the wires of the strands of the rope.
A paste lubricant applied in a contact between a steel wire rope and a rope groove of a pulley, the paste lubricant comprising particles and oil, a surface structure of steel wires of the steel wire rope comprises a wire surface asperity and a surface of the rope groove comprises a groove surface asperity, the paste lubricant compressed in a space between the steel wires and the rope groove, the particles transmitting at least part of a shear force resulting from slip between the surface of the rope groove and the surface structure of the steel wires of the steel wire rope, wherein particles in the lubricant have hardness of greater than 4 on the Mohs scale, or equal to or greater than the hardness of the steel of the wires of the strands of the rope, and substantially are smaller than 5 times of an Ra-value of a rougher one of the surface structure of the steel wires and the surface of the rope groove, and wherein at least 80 percent of a total mass of the particles in the lubricant consists of particles larger than one tenth ( 1/10) of an Ra-value of a smoother one of the surface structure of the steel wires and the surface of the rope groove.
Dependencies are inferred from the claim text.