Radial Piston Pump Components and Its Application in Hydraulic Circuits
A technology of pistons and components, applied in the field of radial piston pumps, which can solve the problems of reduced closing speed and other issues
Active Publication Date: 2019-11-05
HUSCO INT INC
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- Description
- Claims
- Application Information
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Problems solved by technology
The uniquely shaped orifices specifically affect the rate at which these variable orifices close as the throttling member moves such that the rate of closure decreases as the closure of these variable orifices increases
Method used
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[0034] refer to figure 1 , such as hydraulic systems in heavy equipment used in field construction, use hydraulic fluid to move various parts of the equipment. Such a system may include one or more pumps 200, one or more hydraulic actuators 202 (cylinders and / or motors) for performing machine functions, and for routing hydraulic fluid from the pumps 200 to the actuators. The main control valve (MCV) 204 of the actuator 202. Pump 200 may be a radial or axial hydraulic piston pump. The pump 200 may include a mechanism to control the flow 206 and / or pressure of hydraulic fluid delivered by the pump 200 to the hydraulic system. This mechanism may be hydromechanical or electronic, and may be independent of the main control valve 204 . MCV 204 may provide a hydraulic signal, or a sensor may provide an electronic signal indicating the desired flow and / or pressure from pump 200 (ie, "flow command" 208 ). The MCV 204 is also used for directional control of the actuator 202 by routi...
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A system and method for machinery performing work with hydraulic actuators. Radial hydraulic pumps are aligned end-to-end along a common driveshaft axis to form a multi-pump assembly having a plurality of piston / cylinder units extending in a radial direction. Two or more piston / cylinder units are associated with one another to form multiple piston / cylinder groups. A plurality of control valves combines individual output flows from the two or more associated piston / cylinder units into respective common output flows for each respective piston / cylinder group. A plurality of flow control devices varies the common output flow from each respective piston / cylinder group by throttling inlet flow to the two or more associated piston / cylinder units in each respective piston / cylinder group. Each respective common output flow is directed from each respective piston / cylinder group to a hydraulic actuator on the heavy machinery to control its direction of movement.
Description
[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 62 / 191000, filed July 10, 2015, which is incorporated herein by reference. technical field [0003] The present disclosure relates to radial piston pumps, radial piston pump / valve assemblies and applications of radial piston pump / valve assemblies in hydraulic circuits, such as for controlling multiple functions on a piece of heavy construction equipment. Background technique [0004] U.S. Patent Application Publication No. 2012 / 0111185, which is incorporated herein by reference, discloses a highly efficient diametrically compact, radially oriented piston hydraulic machine comprising a cylinder block having a plurality of cylinders , the plurality of cylinders are coupled to a first port through a first valve and to a second port through a second valve. A drive shaft having an eccentric cam is rotatably received in the cylinder, and a cam bear...
Claims
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IPC IPC(8): F04B1/053F04B1/06F04B49/00F04B49/22E02F9/22
CPCE02F9/2232F04B1/0538F04B1/06F04B1/063F04B49/002F04B49/225F04B1/04F04B1/0531F04B53/16F15B11/08F15B11/16F15B2211/2053F15B2211/255F15B2211/40515
Inventor 乔·普法夫布兰德利·克雷默德怀特·史蒂芬森艾瑞克·哈姆肯斯
Owner HUSCO INT INC