New drainage devices for maintenance of machins, methods and results of their experimental research

Khabardin, V.N.; Chubareva, M.V.; Shelkunova, N.O.; Lugovnin, S.S.; Gorbunova, T.L.

Dostizheniya nauki i tekhniki APK 2013(9): 70-72

2013


Accession: 066149668

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Abstract
Analysis of the existing technology of technical maintenance of tractors shows that the most dangerous, both technically and environmentally, are lubrication and filling operations. In this regard, there have been proposed new on the level of inventions devices for draining oil from crankcase cavities of tractors as well as for draining and collecting fuel during technical maintenance of fuel filters. They are developed with consideration of the design features of domestic tractors and technological requirements to the maintenance in the field. They have original technical solutions, flexibility, design simplicity, ease in use and availability in the purchase. Structurally they include a collecting tank and a special device in the form of funnel. The construction of the funnel makes possible to unscrew the drain cap and it can be joined to the surface of the carter after unscrewing its drain cap. Methods of experimental check of the devices for the function and methodology of determinative and comparative tests in the field are presented. Absolute and relative changes of parameters of technical and ecological safety of operations of liquid drainage are taken as estimating indicators. The amount of fluid released on operator and ground can be determined by weighing using control gloves and screens. In the result of comparative experiment (based on the t-test and Romanovsky) it was determined that application of the proposed device allows to reduce the probability that the discharged oil from the crankcase can get on the operator 4,5 times less and the amount of this liquid can get to the soil by 82 % less. The labor intensity to perform execution of discharge operations following the proposed service technology does not significantly differ from the labor intensity of the base technology. Relative error in determining the indicators did not exceeded 10 % at confidence probability of 0.95. In total, this allowed to improve significantly both technical and ecological safety maintenance of tractors in the field. The results obtained can be used in development of technologies and means of technical maintenance of tractors, combine harvesters and other self-propelled machines used in agriculture.