The present invention relates to a winch apparatus equipped with planetary gears, which rapidly drops an object, including the net of a golf practice field, the tent of a livestock shed, etc., being in a lifted state, without power when an emergency situation like a typhoon occurs, and also efficiently prevents various facilities within the golf practice field and the livestock shed from breaking away from the golf practice field and the livestock shed by using the object including the net of the golf practice field, the tent of the livestock shed, etc. rapidly dropped when the emergency situation like the typhoon occurs. The winch apparatus includes a planetary gear part having a ring gear, a sun gear arranged inward from the ring gear, the planetary gears between the ring gear and the sun gear at regular intervals while being in a state of being engaged with an inner circumferential surface of the ring gear and an outer circumferential surface of the sun gear, and a carrier axially coupled to the planetary gears.본 발명은 유성기어가 구비된 권양장치에 관한 것으로서, 태풍 등의 비상상황시에 상승된상태인 골프장 네트, 축사용 천막 등을 포함한 대상물이 무동력으로 신속히 긴급강하될 수 있음은 물론 태풍 등의 비상상황시에 긴급강하된 골프장 네트, 축사용 천막 등을 포함한 대상물을 통해 골프장내의 각종시설물 및 축사내의 각종시설물 등이 골프장 외부 및 축사 외부 등으로 이탈되는 것을 보다 효율적으로 방지할 수 있는 효과가 있다.
