Wyniki 1-1 spośród 1 dla zapytania: authorDesc:"Mykola P. KORINENKO"

Experimental research characteristics of counterbalance valve for hydraulic drive control system of mobile machine DOI:10.15199/48.2019.04.18

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Introduction Mobile machines with hydraulic drive are widely used in industry, transport branch, agriculture [1-3]. Such machines, as a rule, are equipped with high variety of removable operating tools. It enables to use them during greater part of calendar year for performing various operations, such as digging, materials handling, loading operations with bulky materials. Systems of hydraulic drives control of such machines for energy saving, must provide the possibility of regulation of operation organs motion speed and working pressure of pumps in wide ranges. It is important to provide the reliable motion control of the executive device in case of alternating load. Hydraulic drives, based on spool hydraulic separators are widely used in mobile machines. In the process of operation such spools wear, this reduces the degree of leak tightness of hydraulic lines and complicates the operator’s control over the position of the executive device with the load. To provide the possibility of the control over the motion of the executive device and to decrease nonproductive power expenditures in case of the alternative loading counterbalance valves (CBV) are used in the hydraulic drives of mobile machinery. At the same time to provide high degree of leak tightness of operating hydraulic lines controlled check valves are used. Available CBV and controlled check valves increase the cost of the system of hydraulic drive control, its dimensions, mass and operation cost of the mobile machinery [1-7]. The authors elaborated the construction of CBV that simultaneously provides the possibility of the motion speed control of the executive device at the alternative loading and increases the leak tightness degree of the operating hydraulic lines of the hydraulic drive. The following problems are solved to realize the elaborated CBV construction:  provision of high degree of leak tightness;  statistic characteristics st[...]

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