Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
SYSTEM FOR DRIVING A BOOM OF A HYBRID EXCAVATOR, AND METHOD FOR CONTROLLING SAME
Provided are system for driving a boom in a hybrid excavator and a control method thereof. The present invention includes: an electric motor (110) that operates as a motor or an electricity generator; a capacitor (115) that stores electricity generated by the electric motor (110); a hydraulic pump motor (120) that is driven by the electric motor (110) and supplies working fluid to a boom (100); a boom control valve (125) that constitutes a closed circuit selectively connecting/disconnecting a discharge line (121) and an intake line (122) of the hydraulic pump motor (120) to/from a head (106) or a rod (107) of the boom (100); a main pump (140) that is driven by a driving source (141) disposed separately from the electric motor (110) and supplies the working fluid to a bucket, a traveling motor, or an arm; a boom-assistant valve (144) that allows the working fluid discharged from the main pump (140) and the hydraulic pump motor (120) to meet each other by connecting the discharge line of the main pump (140) to the discharge line (121) of the hydraulic pump motor (120); and a control unit (160) that controls the electric motor (110), the hydraulic pump motor (120), and the boom control valve (125). The present invention can minimize an energy loss, ensure operational performance of a boom and recover recoverable energy of the boom, while excavating that is the main use of the excavator, even using an electric motor.
SYSTEM FOR DRIVING A BOOM OF A HYBRID EXCAVATOR, AND METHOD FOR CONTROLLING SAME
Provided are system for driving a boom in a hybrid excavator and a control method thereof. The present invention includes: an electric motor (110) that operates as a motor or an electricity generator; a capacitor (115) that stores electricity generated by the electric motor (110); a hydraulic pump motor (120) that is driven by the electric motor (110) and supplies working fluid to a boom (100); a boom control valve (125) that constitutes a closed circuit selectively connecting/disconnecting a discharge line (121) and an intake line (122) of the hydraulic pump motor (120) to/from a head (106) or a rod (107) of the boom (100); a main pump (140) that is driven by a driving source (141) disposed separately from the electric motor (110) and supplies the working fluid to a bucket, a traveling motor, or an arm; a boom-assistant valve (144) that allows the working fluid discharged from the main pump (140) and the hydraulic pump motor (120) to meet each other by connecting the discharge line of the main pump (140) to the discharge line (121) of the hydraulic pump motor (120); and a control unit (160) that controls the electric motor (110), the hydraulic pump motor (120), and the boom control valve (125). The present invention can minimize an energy loss, ensure operational performance of a boom and recover recoverable energy of the boom, while excavating that is the main use of the excavator, even using an electric motor.
SYSTEM FOR DRIVING A BOOM OF A HYBRID EXCAVATOR, AND METHOD FOR CONTROLLING SAME
SYSTEM ZUR ANSTEUERUNG EINES AUSLEGERS EINES HYBRIDBAGGERS UND VERFAHREN ZU SEINER STEUERUNG
SYSTÈME D'ENTRAÎNEMENT D'UNE FLÈCHE D'UNE EXCAVATRICE HYBRIDE ET PROCÉDÉ DE COMMANDE DE CELUI-CI
KANG BYUNG IL (Autor:in)
22.03.2017
Patent
Elektronische Ressource
Englisch
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