Novel hydraulic synchronous control system for shield tunneling machine segment conveying trolley

Abstract

The invention discloses a novel hydraulic synchronous control system for a shield tunneling machine segment conveying trolley. The novel hydraulic synchronous control system comprises a control valvegroup, a proportional velocity regulating valve group and an actuator. The actuator comprises at least four lifting oil cylinders, each lifting oil cylinder is internally provided with a magnetostrictive displacement sensor, and the magnetostrictive displacement sensors transmit detection signals to a controller. The proportional velocity regulating valve group includes at least four proportionalvelocity regulating valves, and the proportional velocity regulating valves are in one-to-one correspondence with the lifting oil cylinders. The control ends of the proportional velocity regulating valves are connected with the controller. A rodless cavity of each lifting oil cylinder is connected with a service port of the control valve group through the corresponding proportional velocity regulating valve. A rod cavity of each lifting oil cylinder is connected to another service port of the control valve group. The novel hydraulic synchronous control system can perform real-time detection and feedback on the displacement of each lifting oil cylinder, and adjust the input flow rate of each lifting oil cylinder in real time to realize high-precision synchronization of each lifting oil cylinder in the lifting and lowering process, so that tunnel construction efficiency is effectively improved, and personal safety hazards are avoided.

Description

technical field [0001] The invention belongs to the technical field of shield machine hydraulic synchronous control system, and in particular relates to a new type of shield machine segment transport trolley hydraulic synchronous control system, especially applied to the hydraulic synchronization in the process of shield machine segment transport trolley lifting and lowering control. Background technique [0002] Generally speaking, the shield machines that need to assemble segments are equipped with segment conveying trolleys. The function of the segment conveying trolleys is to continuously and smoothly transfer the segments transported by the segment crane to the segment assembly area. The two basic actions of the segment conveying trolley are axial movement and vertical lifting, and the vertical lifting action requires at least four lifting cylinders to complete together. The synchronous motion accuracy of multiple lifting cylinders directly affects the operation stabil...

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Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a new type of shield machine segment conveying trolley hydraulic synchronous control system, which solves the problems of low synchronization accuracy of each lifting cylinder and poor operating stability of the segment conveying trolley in the prior art

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