Hydraulic control system of mud outlet gate open-close cylinder of spiral conveyer of shield machine

• Main Authors: CHEN JUQING, LI XIANGGUO, XIE QIAN, FU SU, SONG QINGYU, REN ZHONGPING
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2012
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; EARTH DRILLING; FIXED CONSTRUCTIONS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GALLERIES; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LARGE UNDERGROUND CHAMBERS; LIGHTING; MECHANICAL ENGINEERING; MINING; SHAFTS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TUNNELS; WEAPONS

A hydraulic control system of a mud outlet gate open-close cylinder of a spiral conveyer of a shield machine comprises a mud outlet gate open-close hydraulic cylinder and a hydraulic control return circuit. The hydraulic control return circuit comprises a three-position four-way magnetic exchange valve, a two-position two-way magnetic exchange valve, a hydraulic control one-way valve, a cartridge type throttle valve, a one-way valve, a pressure testing connector, a safety stop ball valve, an accumulator and a pressure gauge which are connected through pipelines. The hydraulic control system of the mud outlet gate open-close cylinder of the spiral conveyer of the shield machine has the advantages of achieving effectively control to the hydraulic cylinder and being capable of controlling the hydraulic cylinder to reliably close a mud outlet gate under the conditions of sudden breakdown and system outage, thereby being capable of flexibly controlling the hydraulic cylinder, achieving system self-protection durin