Selecting and validating the hydraulic circuit of hydraulic actuating gear of sustained power with computer control
Authors: Malkerova T.S. | |
Published in issue: #10(15)/2017 | |
DOI: 10.18698/2541-8009-2017-10-184 | |
Category: Power, Metallurgic and Chemical Engineering | Chapter: Hydraulic Machines and Hydropneumatic units |
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Keywords: hydraulic actuator with volumetric control, range of regulation, controlled pump, controlled hydraulic motor, uncontrolled hydraulic motor, hydraulic motor unit, total volume, displacement volume of hydraulic motor, range of speed variation |
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Published: 09.10.2017 |
The article considers differentcircuits ofhydraulic actuators with volumetric control. Itisestablishedthattheapplicationofthe actuators circuits withpump and motor control does not provide a wide range of speed variation. One of the prospective hydraulic circuits with the extended range of regulatingthe stepless speed of the output shaft is a hydraulic actuating gearcomprising a hydraulic motor unit which has two hydraulic machines working for the common gear shaft. The first hydraulic machine is an uncontrolled hydraulic motor; the second one is a controlledpump-motor. The hydraulic motor unit allows getting an extended range of speed regulationcompared to the controlled hydraulic motor of the equivalentdisplacement volume. The controlled motor can perform a reversal and change to the pumping mode, which theoretically allows getting the regulation of the motor total volume from maximum to zero.
References
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