Abstract: A land leveller includes a vehicle frame and a swing frame. The swing frame include a supporting beam assembly and connecting parts, the supporting beam assembly include multiple beam members, and the multiple beam members are connected sequentially at end parts, such that the multiple beam members form a closed shape. The connecting part is arranged at the connecting end part between two adjacent beam members. At least one connecting part is rotatably connected with the vehicle frame, and at least another connecting part is rotatably connected with a driving part.

Abstract: The present disclosure discloses a rotary frame and a grader, and relates to the field of a grader. The rotary frame includes: a rotary ring, provided with a recessed portion and an opening; a first connecting piece fixed at the periphery of the rotary ring, one end of the first connecting piece being attached to the periphery of the rotary ring and the other end of the first connecting piece being separated from the periphery of the rotary ring; a second connecting piece, the second connecting piece being also fixed at the periphery of the rotary ring, and one end of the second connecting piece being attached to the periphery of the rotary ring and the other end of the second connecting piece being separated from the periphery of the rotary ring; a supporting base fixed on an inner wall of the rotary ring and located in the recessed portion.

Abstract: A rotary frame includes a first connecting member of the rotary frame has an arc-shaped concave part. Each second connecting member is non-coplanar with the first connecting member and has a mounting hole. A first reinforcing member is connected between a first end of the first connecting member and one of the second connecting members; and another first reinforcing member is connected between a second end of the first connecting member and the other second connecting member. A second reinforcing member is connected between a middle part of a circumferential edge of the first connecting member and one of the second connecting members; and another second reinforcing member is connected between the middle part of the circumferential edge of the first connecting member and the other second connecting member. Middle regions of the first and second reinforcing members joined to the same second connecting member are separate from each other.

Abstract: The present disclosure relates to a land leveler, and relates to the field of engineering machinery to optimize the structure of a swing frame. The land leveler comprises a vehicle frame and a swing frame. The swing frame comprises a supporting beam assembly and connecting parts, wherein the supporting beam assembly comprises multiple beam members, and the multiple beam members are connected sequentially at end parts, such that the multiple beam members form a closed shape. The connecting part is arranged at the connecting end part between two adjacent beam members. At least one connecting part is rotatably connected with the vehicle frame, and at least another connecting part is rotatably connected with a driving part.