PROLONGATION OF SERVICE LIFE OF DIESEL LOCOMOTIVE MAIN BEARINGS BASED ON RATIONAL SELECTION OF CRANKSHAFT SUPPORT PLIABILITY

Subject of investigation: "crankshaft - main bearing" assembly of diesel locomotives ChN26/26. Purpose of the work: reduction of intensity and increase of uniformity of wear of diesel locomotive main bearings as a result of modification of the rigidity characteristics of the support and crankshaft. A calculation methodology is developed for accounting for the influence of the support angular pliability under the condition that the loading of the antifriction bearing is not stationary. Revealed are the main causes of irregular wear of the main bearing insert. Proposals are made for a rational relation between the bending pliability of the shaft knee and the angular pliability of the support, for rational pliability values for V-type locomotive diesel engines, and for modification of the design of the post of diesel cylinder block ChN26/26. Series production of the cylinder block with a higher angular pliability of the bearing assembly is started. Effectiveness of introduction: prolongation of the insert service life 1,5 times. Field of application: transport engine buildingAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio