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Providing Cavitation-Free Operation of Hydraulic Systems under Passing Load in Hydraulic Actuator

Author

Listed:
  • Liliya Musina
  • Dmitry Tselischev
  • Vladimir Tselischev
  • Sergey Konstantinov
  • Ramil Musalimov

Abstract

The problems of braking and positioning of hydraulic actuators are an integral part of output speed control in hydro-pneumatic actuators. This article is focused on a hydraulic braking of driven elements of machines and mechanisms which is carried out by devices known as brake valves (counterbalance, load control, over-centre valves). Brake valves are used to exclude overrunning speed under passing loads when the external load direction coincides with the direction of movement (rotation) of the hydraulic actuator. They provide a constant pressure in pressure line and prevent cavitation. In this article the design and operation of brake valves are analyzed. The need for brake valves in hydraulic machines with hydraulic actuators under a passing load is proved. As a result of theoretical research a mathematical model of dynamics of hydraulic actuator with a brake valve has been developed. This model unlike others takes into account the design of main and control spools of the brake valve. The problem of logging-running unit braking is solved by the use of the hydraulic brake valve as a part of hydraulic logging system.

Suggested Citation

  • Liliya Musina & Dmitry Tselischev & Vladimir Tselischev & Sergey Konstantinov & Ramil Musalimov, 2015. "Providing Cavitation-Free Operation of Hydraulic Systems under Passing Load in Hydraulic Actuator," Modern Applied Science, Canadian Center of Science and Education, vol. 9(4), pages 276-276, April.
    • Handle: RePEc:ibn:masjnl:v:9:y:2014:i:4:p:276
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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