Pressure-flow whole-process-adaptive TBM (tunnel boring machine) propelling hydraulic system

Abstract

The invention discloses a pressure-flow whole-process-adaptive TBM (tunnel boring machine) propelling hydraulic system which comprises a motor, a variable pump, a variable cylinder, a three-position three-way reversing valve, a throttling port, an overflow valve, a safety valve, a proportional speed adjusting valve, a two-position two-way reversing valve, a three-position four-way proportional reversing valve, four proportional pressure reducing valves, four one-way valves, four hydraulic cylinders, a two-position three-way reversing valve, a variable throttling port, a proportional overflow valve, an oil incoming pipe, an oil returning pipe and an oil tank. The proportional speed adjusting valve is adopted to primarily adjust flow of the system, each propelling hydraulic cylinder is controlled by adopting an independent proportional pressure reducing valve, so that realtime coordinate control can be realized in the whole process of quick propelling, normal propelling and quick backing of a TBM. The pressure-flow whole-process-adaptive TBM propelling hydraulic system can adapt to tunneling conditions of complex geographic environments and is suitable for propelling motion control of propelling, supporting and step-changing whole-process hard rock tunneling equipment under various geographic conditions.

Description

technical field [0001] The invention relates to a fluid pressure actuator, in particular to a TBM propulsion hydraulic system adapted to the whole process of pressure and flow. Background technique [0002] Hard rock tunnel boring machine (TunnelBoringMachine, referred to as TBM). It is a kind of excavation cutter head driven by electric or hydraulic power to rotate, under the action of the propulsion system, the cutter head is pushed towards the rock formation, and at the same time, the disc-shaped hob on the cutter head is used to squeeze and break the rock, so that the entire section of the tunnel can be excavated at one time. Formed large construction machinery. TBM integrates excavation, slag extraction, initial support, ventilation and dust removal, and has fast excavation speed, stable construction quality, good safe operation conditions, and little impact on the ecological environment. [0003] The TBM propulsion support system has the functions of propulsion, supp...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of low efficiency and untimely correction in the existing TBM construction process, and to meet the requirements of hard rock excavation construction, the present invention provides a TBM propulsion hydraulic system that adapts to the whole process of pressure and flow, which can realize the propulsion pressure Coordinated control with propulsion flow increases the flexibility of automatic deviation correction of the propulsion system, and can also solve the problem of low efficiency of cooperative control of hydraulic cylinders in the propulsion system

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