Feeding Appatarus Having Gear Pump Unit and Combining Form Hydraulic Actuator Having the Same
The present invention relates to a combination-type hydraulic actuator capable of minimizing the effort and costs required for maintenance and being highly responsive. The combination-type hydraulic actuator comprises: a hydraulic passage including a driving motor, and first and second fluid transfe...
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Format: | Patent |
Sprache: | eng ; kor |
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Zusammenfassung: | The present invention relates to a combination-type hydraulic actuator capable of minimizing the effort and costs required for maintenance and being highly responsive. The combination-type hydraulic actuator comprises: a hydraulic passage including a driving motor, and first and second fluid transfer units through which fluid flows and which are formed on one side and the other side thereof and communicate with the outside; a gear pump unit including a pair of transfer gears provided between the first fluid transfer units to be rotated by the driving motor and changing the direction of fluid in a rotation direction; and a cylinder device including a piston and a cylinder provided so that the piston is vertically movable and including an accommodating space communicating with the first fluid transfer unit above the stroke range of the piston and communicating with the second fluid transfer unit below the stroke range of the piston. Fluid is circulated by the driving force of the driving motor, and the piston is operated.
본 발명에 따른 복합형 유압식 액추에이터는, 구동모터 및 유체가 유동되고, 일측 및 타측에 외부와 연통되는 제1유체이송구 및 제2유체이송구가 형성된 유체유로와, 상기 제1유체이송구 및 상기 제2유체이송구 사이에 구비되어 상기 구동모터에 의해 회전되며, 회전 방향에 따라 유체의 유동 방향을 변화시키는 한 쌍의 이송기어를 포함하는 기어펌프유닛을 포함하는 유압공급장치와, 피스톤 및 상기 피스톤이 상하 이동 가능하게 구비되고, 상기 피스톤의 행정 범위보다 상측에 상기 제1유체이송구가 연통되며, 상기 피스톤의 행정 범위보다 하측에 상기 제2유체이송구가 연통되는 수용공간이 형성된 실린더를 포함하는 실린더장치를 포함하고, 상기 구동모터의 구동력에 의한 유체의 순환에 의해 상기 피스톤을 구동시킨다. |
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