A movable clamping region is divided into a fixed pressure clamping region and a movable clamping region in a circumferential direction of rotation of a rotary adjustable body, the movable clamping region is formed as a single or a plurality of sections in a clamping region, Since the clamping region is the remaining section of the movable clamping region which is larger than the section of the movable clamping region, the ridge surface has a fixed pressure clamping region as the clamping region of the outer peripheral portion of the rotary adjustment body and a movable clamping region So that the ridge surface can be clamped by the clamping region forming two kinds of different clamping actions.SOLUTION: A frame 3 is connected to a traveling machine body 1 by a connecting mechanism 2, an embankment mechanism 4 for raising the soil on the old ridge W is provided in the machine frame, and a ridge is pressed against the rear side of the embankment mechanism in the advancing direction An adjusting mechanism 12 having a rotary adjusting element 13 capable of rotating and riding is provided. The outer peripheral part of the rotary adjusting body is formed in a pressing region E where the ridge surface can be rotated and revolved, and the clamping region is rotated Fixed pressure clamping region EFAnd the movable clamping region EMAs shown in FIG.(FIG.【課題】圧締領域は回転整畦体の回転周方向に固定圧締領域及び可動圧締領域に区画形成され、可動圧締領域は圧締領域中の単数又は複数の区画とされ、固定圧締領域は可動圧締領域の区画より大きな可動圧締領域の残余の区画とされているので、畦面は回転整畦体の外周部分の圧締領域としての固定圧締領域及び可動圧締領域により回転整畦されることになり、異なる二種類の圧締作用をなす圧締領域により畦面を圧締することができる。【解決手段】走行機体1に連結機構2により機枠3を連結し、機枠に旧畦W上に土を盛り上げる盛土機構4を設け、盛土機構の進行方向後方位置に畦面を圧接回転により回転整畦可能な回転整畦体13をもつ整畦機構12を設けてなり、回転整畦体の外周部分は畦面を回転整畦可能な圧締領域Eに形成され、圧締領域は回転整畦体の回転周方向に固定圧締領域EF及び可動圧締領域EMに区画形成されている。【選択図】図7
