Visual oil film measuring device suitable for high-low pair oil-gas two-phase mixed lubrication

Abstract

The invention discloses a visible oil film measuring device suitable for high-low pair oil-gas two-phase mixed lubrication, and relates to the field of contact friction measurement. The visual oil film measuring device suitable for high-low pair oil-gas two-phase mixed lubrication can be used for measuring the oil film thickness, friction force, friction coefficient and contact area temperature in the contact process of a test piece under different speeds, loads, contact conditions and lubrication modes. The visual oil film measuring device is connected to a supporting platform and is characterized by comprising a test piece I, a test piece II, a rotary driving device, a horizontal displacement device, a measuring device and a lubricating system, and the measuring device comprises a xenon flash source, a laser and a high-speed infrared camera which can extend into or retreat from the inside of the first test piece, and the high-speed infrared camera faces the contact area of the first test piece and the second test piece after extending into the inside of the first test piece. The device has the advantages of good measurement effect, wide application range, high measurement precision and the like on the whole.

Description

technical field [0001] The invention relates to the field of contact friction measurement, in particular to a visual oil film measurement device suitable for high and low auxiliary oil-gas two-phase mixed lubrication, which is used to measure the thickness of the oil film, friction force, coefficient of friction and temperature of the contact area during the contact process of the test piece Measurement. Background technique [0002] In the working engineering of mechanical equipment, there are a large number of joint surfaces, and the contact lubrication state of some key joint surfaces directly affects the working state and life of the joint surfaces, thus indirectly affecting the normal operation of mechanical equipment. If the oil film is too thin, the joint surface will directly produce dry friction, which will have an impact. In severe cases, the temperature of the overall machine and lubricating oil will increase, and the viscosity of the lubricating oil will decrease...

AI Technical Summary

Problems solved by technology

Therefore, the existing technology only evaluates the contact state by friction, and its accuracy is not high

[0007] 2. The existing technology can only simulate and measure the elastohydrodynamic friction force of high secondary point contact, but cannot measure the lubrication state under contact conditions such as line contact and eccentric load contact, and its scope of application is relatively narrow

[0008] 3. For the distinction between elastohydrodynamic lubrication, mixed lubrication and boundary lubrication, the existing technology only distinguishes by the amount of oil in the contact area, which cannot be quantified. Different operators may have different standards, resulting in personnel errors

[0009] 4. The existing technology can only test the relative sliding condition, but cannot test the pure rolling condition and the slip-roll coupling condition

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