Hydraulic lifting system

• Main Authors: YUE YUANJING, CAO JIANHONG, LI XIAOBO, ZHU XIANGXUAN, HAN JIANYUN
• Format: Patent
• Language: English
• Published: 01.07.2015
• Subjects: LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

The invention relates to the technical field of automobile manufacturing, in particular to a hydraulic lifting system. The hydraulic lifting system comprises a lifting pump assembly, a cab lifting cylinder and a spare tire lifting cylinder. The lifting pump assembly comprises an oil can, a hydraulic pump and a reversing valve. The reversing valve is provided with six connectors and comprises four working positions. A cab can be controlled to be lifted and put down. A spare tire can be controlled to be lifted and put down. The cab lifting hydraulic system and the spare tire hydraulic lifting system are integrated into the hydraulic lifting system. The hydraulic lifting system can be compact and reasonable in structure, the number of parts is decreased, the hydraulic lifting system is easy to assemble, repair, preserve and maintain, and cost is reduced. The turning process of the cab conforms to the differential motion principle, the lifting strength of the cab lifting cylinder is large, and the piston stretching speed is high. In addition, the problems that due to the fact that an oil can of an existing spare tire lifting pump is small in volume, oil overflow and oil shortage happen are solved.