The present invention relates to a grating flattening device, and more particularly, to a grating flattening device having a frame formed to be coupled to an apparatus and horizontally aligned with a ground surface, the grating flattening device comprising: a supporting portion formed with a caster in a downward direction to support a weight on a central portion of the frame； A horizontal frame having a fastening part for fastening the equipment on the other side of the center of the frame； A first adjusting member is disposed at one end of the frame, a second adjusting member is disposed at the other end of the frame, and a second adjusting member is disposed to adjust the distance between the first adjusting member and the second adjusting member while moving along the frame. A control member； A first blade having a first bracket fastened to the lower end of the first adjusting member in a hinge form and a first flat member inserted into the first bracket and formed to have a flat surface； A second blade having a second bracket hinged to a lower end of the second adjusting member and a second flat member inserted into the second bracket and having a flat surface； A first cushioning member fastened to the lower end of the first bracket so as to have a hinge form from the upper surface of the first bracket and having an upper end connected to the first adjusting member； And a lower end portion of the second bracket is hinged from an upper surface of the second bracket and an upper end portion of the second cushioning member is connected to the second control member.본 발명은 두둑 평탄장치에 관한 것으로, 장비와 체결되고 지면과 수평을 이루도록 형성된 프레임을 구비하는 두둑 평탄장치에 있어서, 상기 프레임의 중앙부 일 면에 무게를 받쳐주기 위하여 하부방향으로 캐스터가 형성된 지지부와 상기 프레임의 중앙부 타 면에 장비가 체결되도록 체결부가 형성된 수평프레임； 상기 프레임의 일측 단부에는 제1 조절부재가 배치되고, 상기 프레임의 타측 단부에는 제2 조절부재가 배치되며, 상기 프레임을 따라 이동하면서 상기 제1 조절부재와 제2 조절부재 간의 거리를 조절하도록 형성된 조절부재； 상기 제1 조절부재의 하단부에 힌지형태로 체결된 제1 브라켓과 상기 제1 브라켓의 내부로 삽입되어 평탄면을 갖도록 형성된 제1 평탄부재를 구비하는 제1 블레이드； 상기 제2 조절부재의 하단부에 힌지형태로 체결된 제
