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公开(公告)号：US11668072B1
公开(公告)日：2023-06-06
申请号：US17974110
申请日：2022-10-26
发明人： Alexander Skeie
CPC分类号： E02F9/2217 , E02F9/2228 , F15B1/024 , F15B1/027 , F15B21/14
摘要： A system and method for storing potential energy for a material handler. The system and method involves actuating a machine element using hydraulic cylinders; measuring a position of the machine element; controlling the hydraulic cylinders with a hydraulic circuit by an electronic control unit; determining a maximum target pressure for at least one gas actuator coupled to the machine element; calculating a target pressure for the at least one gas actuator at the position; measuring a gas pressure measurement from the at least one gas actuator; comparing the target pressure to the gas pressure measurement; and adjusting a hydraulic adjustment valve to increase or decrease an amount of hydraulic fluid within a hydraulic chamber of an accumulator thereby changing a gas pressure within the at least one gas actuator to correspond to the target pressure.
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公开(公告)号：US20240140762A1
公开(公告)日：2024-05-02
申请号：US17974003
申请日：2022-10-26
发明人： Alexander Skeie , Rick Copeland
IPC分类号： B66C13/20 , B66C13/44 , B66C23/82 , F15B1/26 , F15B13/044 , G05B19/416 , G05D16/20
CPC分类号： B66C13/20 , B66C13/44 , B66C23/82 , F15B1/26 , F15B13/044 , G05B19/416 , G05D16/2022 , G05D16/2024 , G05D16/204 , F15B2211/30525 , F15B2211/327 , F15B2211/63 , G05B2219/45006
摘要： A computer-implemented method and/or system for controlling a material handler comprises: processing, by an electronic control unit (ECU), a plurality of electronic input signals from at least one joystick; determining an adjustment for at least one of a pair of solenoids based on at least the plurality of electronic input signals from the joystick; controlling the pair of solenoids by the ECU and each solenoid acting in opposition to each of a pair of biasing elements of an open-center directional control valve to move the directional control valve to an extension position or a retraction position from a central position; determining a setpoint buildup pressure for a central passageway of the directional control valve; and actuating a constrictive solenoid of a pressure buildup valve to constrict the central passageway based on the setpoint buildup pressure whereby the constrictive passageway increases a pressure in the central passageway of the directional control valve.
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