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内燃机车牵引电动机的抱轴承在运用中并非可靠,其故障率占牵引电动机全部故障的30%,而大部分故障均发生在冬季。这种情况是由于结构上的缺陷以及保养困难(如加注润滑油、油量检查、冬季从轴承瓦盖倒出冷凝液等)而造成的。研究和实践表明,抱轴承主要是在润滑油不足或半液态润滑的条件下工作。众所周知,滑动轴承润滑的流体动力状态的特性是用σ=μ_αν/ρ值来表示的,其中ν为轴
In the application, the suspension bearing of the traction motor of a diesel locomotive is not reliable, and its failure rate accounts for 30% of all the faults of the traction motor, while most of the faults occur in the winter. This condition is due to structural defects and maintenance difficulties (such as refueling, fuel check, pouring of condensate from the bearing cover during the winter, etc.). Research and practice show that, mainly to hold the bearing in the oil under the condition of semi-liquid lubrication or lubrication. It is well-known that the hydrodynamic characteristics of a lubricated plain bearing are characterized by σ = μ_αν / ρ, where ν is the axis