Introduction of the dynamic pressure lubrication three-way reversing valve:
With the rotation of the bearing shaft neck, it will bring the oil lubrication three-way reversing valve to the friction surface. Due to the viscosity of the lubrication oil of three-way reversing valve and the oil bearing deputy hydrodynamic effect of oil pressure, composing the bearing oil film, called the hydrodynamic pressure lubrication three-way reversing valve. The assumption conditions of the hydrodynamic pressure lubrication three-way reversing valve theory are about its viscosity of the lubrication three-way reversing valve dose, namely that the viscosity of the lubrication three-way reversing valve oil under a certain temperature will not change along with the change of pressure; The following is to assume that the surface of the living relative friction movement is rigid, namely under load and oil film pressure, without considering the elastic deformation. Under the above assumed conditions, generally for the overloading (contact pressure in 15 mpa) of the sliding bearing, the assumption conditions are close to the practical situation.
But, when the rolling bearing and gear surface contact pressure increases to 400 ~ 1500 mpa, the above assumptions are different to the practice. At this time the deformation of the friction surface can reach several times of oil film thickness, and lubrication three-way reversing valve in the elastic deformation on the surface of the metal friction and lubrication three-way reversing valve oil viscosity changes with the pressure of these two elements, to discuss and calculate the rules of the oil film composition and thickness, oil film cross section shape and the oil film pressure distribution is more relevant to practice in the lubrication three-way reversing valve is called elastic hydrodynamic pressure lubrication three-way reversing valve.
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