INVESTIGATION OF THE EFFECT OF WORKING MOVEMENT LENGTH ON THE EFFICIENCY OF THE EXCAVATORS

The question of the effect of working length on the performance of one-bucket excavators, in particular for their production, dedicated to the research of many authors. As one of the coefficients of the variable time factor for determining operational performance, the coefficient of impact of movement is proposed. When determining the cycle life of excavators with different equipment, ranges of coefficient changes were set, which takes into account the length of the working movement. It is necessary to consider the technological capabilities of the machines in their operation to achieve the required quality of work on object considering to the increasing use of new machines and mechanisms, the decline in the multi-operability of earthmoving production. The purpose of this article is to increase the efficiency of the using of excavation complexes in the arrangement of exavation face, providing the required quality of work. It should be noted that ensuring and maintaining the reached level of performance required quality to reduced efficiency of the main construction machines, including their productivity. In addition to the complexity of the three-dimensional characteristics of the object, the magnitude of the operational productivity of the leading machines of the complexes are influenced by a number of different factors, among which it is possible to distinguish the technological parameters of the machines. One of the most important technological parameters of the operation of single-bucket excavators, which also affects the quality of work during the cleaning of the ditches, is the length of the working movement and the width associated with it. Currently, the choice of parameters is made on the basis of empirical dependencies and practical recommendations and often it is controversial, especially for excavators equipped with a backhoe.

Chernenko V.K., (2002) Tekhnolohiia budivelnoho vyrobnytstva, [Technology of construction production], Higher School, 388 p., [in Ukrainian].
Yarmolenko M.G., (2005) Tekhnolohiia budivelnoho vyrobnytstva, [Technology of construction production],  Kiev, Higher School,  328 p., [in Ukrainian].
Yarmolenko M.G., (2007) Tekhnolohiia budivelnoho vyrobnytstva. [Technology of construction production] Workshop. Kiev, Higher School,  342 p., [in Ukrainian].
Isakhanov G.V., (1985) Osnovy nauchnykh issledovanyi v stroytelstve [Fundamentals of research in construction], Kiev, Higher School, 208 p.[in Russian].
Ivanik I. G., Vihot S. I., Pozhar R. S., Ivanik J. I., Vybranets Y. Y. (2013) Osnovy rekonstruktsii budivel i sporud [Basics of reconstruction of buildings and structures], Lviv, Lviv Polytechnic publication, 276 p., [in Ukrainian].
Akimova L.D., Ammosov N.G., Badin G.M. etc. By ed, G. M. Badin, A.V.Mescheryakova. (1987) Tekhnolohyia stroytelnoho proyzvodstva, [Technology of building production], Textbook.,L., Stroyizdat, 606 p., [in Russian].
Chernenko V.K., Galimullin V.A., Chebanov L.S., (1989) Proektyrovanye zemlianykh rabot. Prohramyrovannoe posobye [Earthwork design. Programmed allowance], Kyiv, High school, 159 p. [in Russian].
Dehtyarev A.P., Reish A.K., Rudensky S.I. (1987) Kompleksnaia mekhanyzatsyia zemlianykh rabot [Complex mechanization of earthworks], Moskow, Stroyizdat, 334 p., [in Russian].
Zarubin V.N. (1984) Intensyfikatsiya stroyky [Intensification of construction], Moskow, Sovetskaya Rossyya, 144p., [in Russian].
Donskoy V.M. (1976) Mechanization of earthworks of small volumes [Mekhanizatsiya zemlyanykh rabot malykh obyemov],  Leningrad, Stroyizdat, 160p., [in Russian]