DOI 10.36461/NP.2024.69.1.011
UDC 629.33.05, 621.85

LABORATORY TESTS OF THE DEVICE FOR DIAGNOSIS OF HYDRAULIC SYSTEMS OF TRANSPORT AND TECHNOLOGICAL MACHINES
A.S. Ivanov¹, Candidate of Technical Sciences, Associate Professor; V.V. Lyandenbursky¹, Doctor of Technical Sciences, Professor; N.I. Sergeev¹, Postgraduate
¹Federal State Budgetary Educational Institution of Higher Education "Penza State Agrarian University", Penza, Russia, tel. 8(8412) 65-82-42 Е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

For complex systems, which include modern hydraulic drives, it is very important to develop technologies for controlling the condition of the working elements of hydraulic drives and for detecting faults in hydraulic system units in order to improve the operability of hydraulic drives.
In this article, the technology for testing hydraulic drives of attachments by checkpoints is presented. A refined calibration of hydraulic drives depending on the load increase in 1 kg increments is proposed. The fixation of changes in the monitor indications of the developed device is presented, the application of which makes it possible to present the necessary amount of information about diagnostic parameters for the preparation of a conclusion about the changes in the device indications.
The indications were decoded using the Microsoft Excel application. The average values of the device indications at different impact forces on the strain gauges of the device, standard deviations and coefficients of variation were determined.
The test results are presented in the form of graphs of the dependence of the average device indication and the standard deviation on the pressure in the pipeline. At the final stage of the tests of the developed device, the fixation of the pressure in the pipeline during the transient process that occurs during the period of operation of the automatic valve of the piston valve of the hydraulic distributor was checked.
The methods and means used should ensure a low error in diagnosis with a reduction in the duration of operations to measure the quantitative values of technical condition parameters with subsequent processing and analysis of the results.
Keywords: laboratory tests, hydraulic drives, hydraulic system, calibration, hydraulic distributor.

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