US 11,718,140 B2
Self-balancing device for self-propelled off-road RV box body
Xinna Liu, Weihai (CN); Xiaodong Li, Weihai (CN); and Yongliang Zhu, Weihai (CN)
Assigned to BLACKSERIES INTELLIGENT EQUIPMENT (WEIHAI) CO., LTD, Weihai (CN)
Filed by BlackSeries Intelligent Equipment (Weihai) Co., Ltd, Weihai (CN)
Filed on May 13, 2022, as Appl. No. 17/744,612.
Claims priority of application No. 2021106932550 (CN), filed on Jun. 22, 2021.
Prior Publication US 2022/0402323 A1, Dec. 22, 2022
Int. Cl. B60G 21/055 (2006.01); B60G 21/02 (2006.01); B60P 3/32 (2006.01)
CPC B60G 21/0551 (2013.01) [B60G 21/026 (2013.01); B60G 2300/07 (2013.01); B60P 3/32 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A self-balancing device for self-propelled off-road RV box body, comprising an auxiliary beam body, a front triangular balance beam body (3), a rear triangular balance beam body (7) and an axle-holding device (4) for connecting with a RV chassis girder, wherein the front triangular balance beam body (3) and the rear triangular balance beam body (7) are arranged close to both ends of the auxiliary beam body respectively, the axle-holding device (4) is arranged between the front triangular balance beam body (3) and the rear triangular balance beam body (7), and both the front triangular balance beam body (3) and the rear triangular balance beam body (7) comprise a hard limit structure, and the axle-holding device (4) comprises a soft limit structure for horizontally resetting the RV box body;
wherein both the front triangular balance beam body (3) and the rear triangular balance beam body (7) further comprise a triangular main beam connected with the auxiliary beam body and two triangular auxiliary beams connected with the RV chassis girder, and the two triangular auxiliary beams are respectively arranged at left and right ends of the triangular main beam and below the triangular main beam;
wherein the triangular main beam comprises a main plate (12), two parallel balance vertical beams (13) fixedly arranged above the main plate (12), and a vertical beam reinforcing plate 14 arranged between the two balance vertical beams (13).