本实用新型应用于铁路高速重载运输领域。
The utility model is applied in the high speed heavy load railway transportation field.
近年来铁路提速和重载运输的大力发展、客货运量和行车密度大幅度增长，导致钢轨磨耗日益严重。
Recent years, with the rapid development of railway transportation, and the grate increase in the capacity of trains for passengers and goods, the rail abrasion becomes a serious problem.
因此，开发研制出满足提速、重载要求的转向架是实现铁路提速和重载运输的前提。
With the combination of the need of railway transport development, the development trend of freight car bogies in our country is put forward.
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