US 12,434,528 B2
Ultra-low heavy-duty active suspension, suspension vehicle and leveling control method
Shaopeng Kang, Changzhou (CN); Kailei Liu, Changzhou (CN); Hongbin Qiang, Changzhou (CN); Xia Ye, Changzhou (CN); Jing Yang, Changzhou (CN); Cheng Han, Changzhou (CN); Penghui Huang, Changzhou (CN); and Yuxin Li, Changzhou (CN)
Assigned to Jiangsu University of Technology, Changzhou (CN)
Filed by Jiangsu University of Technology, Changzhou (CN)
Filed on Jan. 12, 2024, as Appl. No. 18/412,032.
Prior Publication US 2024/0157750 A1, May 16, 2024
Int. Cl. B60G 17/018 (2006.01); B60G 17/019 (2006.01); B60G 17/08 (2006.01)
CPC B60G 17/018 (2013.01) [B60G 17/01908 (2013.01); B60G 17/08 (2013.01); B60G 2200/10 (2013.01); B60G 2204/83022 (2013.01); B60G 2206/0112 (2013.01); B60G 2300/36 (2013.01); B60G 2300/37 (2013.01); B60G 2800/019 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A heavy-duty active suspension, comprising:
a suspension frame;
a lifting unit;
a pin axle;
a through axle;
two wheel-driving units;
an encoder; and
a displacement sensor;
wherein the lifting unit is arranged on an upper side of the suspension frame, and is configured for driving a heavy-duty support platform of a vehicle to rise and descend; the pin axle is configured to run through the suspension frame along a longitudinal direction; the through axle shaft is rotatably arranged on the pin axle through a first bearing, and is configured to run through the suspension frame along a transverse direction; the two wheel-driving units are respectively arranged on both ends of the through axle through a second bearing; the encoder is arranged on the through axle, and is configured for measuring a transverse swing angle of the through axle; and the displacement sensor is arranged between an output end of the lifting unit and the suspension frame;
the lifting unit comprises a hydraulic cylinder, an inner guide sleeve, an outer guide sleeve, a proportional servo valve, and a slewing bearing;
the hydraulic cylinder is arranged on the suspension frame; the inner guide sleeve is sleevedly provided outside the hydraulic cylinder, and is fixedly connected to a base of the hydraulic cylinder; the outer guide sleeve is slidingly connected outside the inner guide sleeve; the proportional servo valve is configured for controlling a flow rate of the hydraulic cylinder; and the slewing bearing is configured for connection with the heavy-duty support platform of the vehicle; and
a top end of a piston rod of the hydraulic cylinder is fixedly connected to an inner ring of the slewing bearing; an upper end of the outer guide sleeve is fixedly connected to the inner ring of the slewing bearing; and an outer ring of the slewing bearing is fixedly connected to the heavy-duty support platform of the vehicle; and an oil return port of the proportional servo valve is connected to an oil chamber of the hydraulic cylinder through a pipeline.