Tunnel shielding blade disc hydraulic control system with widened timing range

Abstract

The invention discloses a shield cutter head hydraulic control system with widened speed-adjusting range. A motor is rigidly connected with a constant voltage variable pump by a coupler, the oil outlet of the constant voltage variable pump is connected with the oil inlet of a main one-way valve, the oil outlet of the main one-way valve is respectively connected with the oil inlet of an energy accumulator, the oil inlet of an overflow valve, and four groups of motor / pump parts with the same structure. The hydraulic motor / pump is connected in a loop in parallel, and power is supplied by a constant voltage source consisting of the constant voltage variable pump and the energy accumulator. Independent control is applied to the hydraulic motor / pump, the delivery capacity and the working condition of each hydraulic motor / pump can be adjusted in real time according to different geological conditions so as to control the rotating speed and the torque of a cutter head. The invention adopts thehydraulic motor / pump as an executive element so as to realize the switch of the working condition of the motor and the pump, causes the system to realize the interchange of the working condition withhigh or low rotating speed under the condition that the delivery capacity of the hydraulic oil-supply pump is not changed by controlling the number of the executive elements working at different status simultaneously, thus widening the speed-adjusting range and enhancing the adaptability of the cutter head drive system to different geological conditions.

Description

Shield cutter head hydraulic control system with widening speed range technical field The invention relates to a fluid pressure actuator, in particular to a hydraulic control system of a shield cutter head with a widened speed regulation range. Background technique Shield boring machine is a modern high-tech excavation equipment specially used for underground tunnel construction. It is widely used in the construction of tunnel projects with complex and changeable geological conditions and harsh construction environments. Shield tunneling plays an irreplaceable role in other tunneling forms in the development and utilization of underground space. With the development of science and technology and social progress, shield tunneling will gradually replace traditional methods. The cutter head is one of the key components of the shield tunneling machine, and its main functions are excavation, stabilization and stirring. Because the soil conditions of the excavation section va...

AI Technical Summary

Problems solved by technology

The low energy utilization rate of a system with such a large energy consumption under low load conditions has an extremely important impact on the overall performance of the system

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