Abstract
In the design of modern diesel locomotives equipped with three-axial bogies both in our country and abroad there is widely used a spring hanger made as cylindrical spiral springs of compression with the use of hydraulic shock absorbers. At that the boxes of wheel pairs are connected with frames with the aid of carriers. 
 A considerable drawback of such bogies is that these designs do not allow obtaining the angular turn of wheel pairs during their motion along curvilinear areas of a railway. That is why in practice an increased wear of wheel flanges of wheel pairs takes place. In Bunin SU of Yelets at the level of the invention (RU2604924) there is developed a promising design of a spring hanger excluding such a drawback and a series of computations for substantiation of its efficient design parameters. The investigation results are recommended by research and industrial companies in the field of heavy engineering both in our country, and abroad with the purpose of the further study of the design developed and its possible introduction in practice.
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