One-button type hydraulic lifting system of dumper

• Main Authors: LUO YUN, LI LIYONG, WANG KAI, OUYANG HUIYU
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2023
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TOCARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS; VEHICLES IN GENERAL

The utility model provides a one-button type hydraulic lifting system of a dumper, which comprises a lifting oil cylinder, an oil pump group, a main control valve and a pilot valve for controlling lifting air intake and falling air exhaust, a P port of the main control valve is connected with an oil supply port of the oil pump group through a first oil supply pipe, and an oil inlet of the oil pump group is communicated with a hydraulic oil tank through an oil inlet pipe; a port A of the main control valve is connected with the lifting oil cylinder through a second oil supply pipe, a cavity a1 of the main control valve is connected to a lifting air guide port of the pilot valve through a first pilot pipeline, a limiting valve is further arranged on the first pilot pipeline, and a pressure sensor is arranged on the portion, between the limiting valve and the lifting air guide port, of the first pilot pipeline. And a b1 cavity of the main control valve is connected to a falling air guide port of the pilot valve