The article is devoted to the optimization design of stick a hydraulic excavator at most frequent and greatest value loads. uncertain loads acting on working equipment were obtained by Monte Carlo method based 3D analytical soil-tool interaction models. results show that adopted methodology can be used optimize elements equipment, since was with less weight lower stress values than original des...

Machine-building industries and enterprises for modernization of railway rolling stock are constantly increasing the requirements technical functional characteristics technological equipment drives. The improvement drives ensures implementation optimal laws working bodies motion, accuracy regulation their movementsand stability speeds under variable load conditions, that has a direct impact on ...

Abstract The paper presents a new universal programmable portable measuring device (PMD) intended for the diagnostic and monitoring of hydraulic pneumatic equipment. PMD offers simple, complete, efficient remote solution is designed measurement, recording, processing data as well graphical visualization registered results on test stand or in operating site to measure parameters used servicing, ...

This paper denouements the study of operating parameters of a hydraulic transmission system with and without the application of hydraulic accumulator. In this respect, the hydraulic system, designed in the open circuit mode, consists of the fixed displacement hydraulic pump which gives pressured fluid to the hydro-motor and charges the accumulator as well. The load on the motor is controlled hy...

Hydraulic support is a collaborative bearing equipment with hydraulic transmission power and mechanical load. The method of the mechanical-hydraulic co-simulation model used to discuss response difference in process roof rotation. Based on this model, variation law analyzed by changing rotation velocities roof. Then, discharge flow relief valves at column, energy unloading characteristics colum...

Linear electro hydraulic servo-drives have been built and used in various industrial equipment for more than sixty years. They are distinguished by the ability to develope extremely large forces with the positioning accuracy of the order of a micrometer, ensuring, at the same time, very good dynamic features. The drives characterised by very slow motion and large force are used, among others, i...