Supporting shield hydraulic control system of small-diameter tunneling equipment

• Main Authors: XIA QIANPING, ZHU CHANGJIN, NIE WEI, XU CHENGFA, BU RUI, XU YAO, DAI HAOLIN, WANG AO, WANG HENGZE
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• 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 tight-supporting shield hydraulic control system of small-diameter tunneling equipment comprises a tight-supporting oil cylinder control loop and a stabilizer oil cylinder control loop, the tight-supporting oil cylinder control loop comprises an electro-hydraulic reversing valve, a main reversing valve, a first electromagnetic ball valve, a second electromagnetic ball valve and a first proportional pressure reducing valve, and the electro-hydraulic reversing valve is used for controlling reversing of the main reversing valve; the first electromagnetic ball valve, the second electromagnetic ball valve and the first proportional pressure reducing valve are used for controlling pressure boosting and pressure relief of the tight supporting oil cylinder; the stabilizer oil cylinder control loop comprises a stabilizer reversing valve, and the stabilizer reversing valve is used for controlling the stabilizer oil cylinder to stretch out and draw back. According to the design, the stabilizer oil cylinder control loo