US 12,221,796 B2
Boom, boom assembly and work machine
Shihui Xie, Hunan (CN); Jiangbo Li, Hunan (CN); and Xi Guo, Hunan (CN)
Assigned to SANY AUTOMOBILE MANUFACTURING CO., LTD., Hunan (CN)
Appl. No. 17/928,729
Filed by SANY AUTOMOBILE MANUFACTURING CO., LTD., Hunan (CN)
PCT Filed Aug. 24, 2020, PCT No. PCT/CN2020/110710
§ 371(c)(1), (2) Date Nov. 30, 2022,
PCT Pub. No. WO2022/011783, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 202010672733.5 (CN), filed on Jul. 14, 2020; and application No. 202021373778.4 (CN), filed on Jul. 14, 2020.
Prior Publication US 2023/0279679 A1, Sep. 7, 2023
Int. Cl. E04G 21/04 (2006.01); B66C 23/64 (2006.01)
CPC E04G 21/0445 (2013.01) [B66C 23/64 (2013.01); E04G 21/0436 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A boom comprising a box-type structure, wherein the boom comprises:
a body comprising a first body portion and a second body portion, the first body portion and the second body portion enclosing to form the box-type structure;
a first connecting portion detachably connected to one end of the body; and
a second connecting portion detachably connected to another end of the body;
wherein the first connecting portion is overlapped with the first body portion and/or the second body portion, and the second connecting portion is overlapped with the first body portion and/or the second body portion;
wherein the first body portion and the second body portion overlap each other;
wherein the first body portion comprises a first horizontal plate, a first side plate and a second side plate which are integrally formed, the first side plate and the second side plate are respectively located at two sides of the first horizontal plate, and the first side plate, the first horizontal plate and the second side plate form a first U-shaped structure;
wherein the second body portion comprises a second horizontal plate, a third side plate and a fourth side plate which are integrally formed, the third side plate and the fourth side plate are respectively located at two sides of the second horizontal plate, and the third side plate, the second horizontal plate and the fourth side plate form a second U-shaped structure;
wherein the first side plate and the third side plate overlap each other, the second side plate and the fourth side plate overlap each other;
wherein at least one of the first side plate and the third side plate is provided with a limiting portion, and/or at least one of the second side plate and the fourth side plate is provided with a limiting portion;
wherein the first body portion and the second body portion are abutted via the limiting portion;
wherein the limiting portion comprises an overlapping step and an overlapping plate, the overlapping plate of the limiting portion is coplanar with the corresponding side plate, the overlapping step projects from one side of corresponding side plate to another side.