Method for improving lubrication of line contact fluid under simple sliding

Abstract

The invention discloses a method for improving lubrication of line contact fluid under simple sliding, and relates to lubrication of the line contact fluid under simple sliding. A lubrication oil and contact surface adhering interface is designed on the moving contact surface of a lubrication inlet region, so that a lubrication oil film does not slide on the contact surface; and a lubrication oil and contact surface sliding interface is designed on the moving contact surface of a hertz contact region, so that the lubrication oil film slides on the contact surface. A lubrication oil and contact surface sliding interface is designed on a static contact surface of the lubrication inlet region, so that the lubrication oil film slides on the interface; and a lubrication oil and contact surface adhering interface is designed on the static contact surface of the hertz contact region, so that the lubrication oil film does not slide on the interface. By the method, friction energy consumption and friction temperature rising of the line contact fluid during lubrication can be greatly reduced; the lubrication state of lubrication of the line contact fluid is greatly improved; the working performance of a transmission part under the lubrication condition is obviously improved; and the service life of the line contact fluid is prolonged.

Description

technical field [0001] The invention relates to the technical field of simple sliding off-line contact fluid lubrication. Background technique [0002] Simple sliding down-line contact fluid lubrication refers to the line contact fluid lubrication with a slip-to-roll ratio of 2, which widely exists in planetary gear train transmissions. The line contact fluid lubrication with a slip-to-roll ratio of 2 belongs to the line contact fluid lubrication with a large slip-to-roll ratio. At present, it usually has the following serious problems in engineering practice: (1) It is difficult to form a lubricating oil film, and the bearing capacity of the contact area decreases; (2) The friction The coefficient is larger, the friction energy consumption is larger, and the contact area generates more heat; (3) The contact area is easy to glue, and the contact area wears more seriously. The lubrication problem is the key technical problem and technical bottleneck in the heavy-duty high-p...

AI Technical Summary

Problems solved by technology

The line contact fluid lubrication with a slip-to-roll ratio of 2 belongs to the line contact fluid lubrication with a large slip-to-roll ratio. At present, it usually has the following serious problems in engineering practice: (1) It is difficult to form a lubricating oil film, and the bearing capacity of the contact area decreases; (2) The friction The coefficient is larger, the friction energy consumption is larger, and the contact area is more heated; (3) The contact area is easy to glue, and the contact area wears more seriously

Although these technical means can alleviate the problems in the lubrication of the proposed line contact fluid, such as making the formed lubricating oil film thicker, reducing the friction coefficient of the contact area, reducing the frictional energy consumption and frictional heating of the contact area, and making the tooth surface Wear is reduced to relieve tooth surface gluing, but they have not fundamentally solved the problem in the line contact fluid lubrication, so it is impossible to overcome the technical bottleneck of line contact fluid lubrication under simple sliding conditions and greatly improve the performance of planetary gear train transmission. Lubrication quality

[0004] The technical problems faced by the simple sliding off-line contact fluid lubrication are [1], [2]: (1) The lubricating oil film has a high shear rate and a large shear stress; ( 2) The friction coefficient in the contact area is large; (3) The friction energy consumption in the contact area is large and the friction temperature rise is high; (4) The viscosity of the lubricating oil decreases at high temperature, and the bearing capacity of the contact area decreases significantly; The shear strength of the lubricating oil-contact surface interface decreases, resulting in the sliding of the lubricating oil film on the contact surface, which greatly reduces the bearing capacity of the lubricating oil film in the contact area; The friction coefficient of the contact area is further increased, the friction temperature rise is further increased, the lubricating oil film is thinner, and the interface slip of the lubricating oil film is more serious

This forms a vicious circle, which eventually leads to the failure of the lubricating oil film in the contact area and the sharp rise in the temperature of the contact area, which leads to the failure of bonding at high temperatures on the contact surface and severe wear of the contact surface

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