A visual oil film measurement device that is suitable for high and low auxiliary oil and gas mixed lubricating lubrication

Abstract

The invention discloses a visible oil film measuring device suitable for high and low auxiliary oil and gas two-phase mixed lubrication, and relates to the field of contact friction measurement. A new method is proposed, which can measure the thickness of oil film, friction force, friction coefficient and temperature in the contact zone during the contact process of the test piece under different speeds, loads, contact conditions and lubrication methods. Visual oil film measuring device. Connected to the support platform, it is characterized in that the visible oil film measuring device includes a test piece 1, a test piece 2, a rotary drive device, a horizontal displacement device, a measuring device and a lubrication system; The xenon flash source, the laser and the high-speed infrared camera inside the test piece 1, and the high-speed infrared camera extends into the inside of the test piece 1 and faces the contact area between the test piece 1 and the test piece 2. On the whole, it has the advantages of good measurement effect, wide application range and high measurement accuracy.

Description

technical field [0001] The invention relates to the field of contact friction measurement, in particular to a visual oil film measuring device suitable for high and low auxiliary oil and gas two-phase mixed lubrication, which is used for measuring the thickness of the oil film, friction force, friction coefficient and temperature in the contact zone during the contact process of a 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 surface, thereby 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 the lubricating oil will increase, and the viscosity of the lubricating oil will d...

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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