US 11,987,951 B2
Land leveller
Le Gao, Jiangsu (CN); Penglong Hou, Jiangsu (CN); and Junjie Duan, Jiangsu (CN)
Assigned to JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD., Jiangsu (CN); and XUZHOU XUGONG ROAD CONSTRUCTION MACHINERY CO., LTD., Jiangsu (CN)
Appl. No. 16/480,525
Filed by JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD., Jiangsu (CN); and XUZHOU XUGONG ROAD CONSTRUCTION MACHINERY CO., LTD, Jiangsu (CN)
PCT Filed Jan. 28, 2019, PCT No. PCT/CN2019/073484
§ 371(c)(1), (2) Date Apr. 10, 2020,
PCT Pub. No. WO2020/113806, PCT Pub. Date Jun. 11, 2020.
Prior Publication US 2020/0378086 A1, Dec. 3, 2020
Int. Cl. E02F 9/00 (2006.01); E02F 3/76 (2006.01)
CPC E02F 9/006 (2013.01) [E02F 3/7622 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A land leveller, comprising:
a vehicle frame; and
a swing frame which comprises:
a supporting beam assembly and three connecting parts, wherein the supporting beam assembly comprises multiple beam members, and wherein the multiple beam members are connected sequentially at end parts, such that the multiple beam members form a closed shape;
a connecting part is arranged at a connecting end part between two adjacent beam members; and
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, wherein the supporting beam assembly is constructed to be an isosceles triangle, and wherein the supporting beam assembly is welded or cast.