Programmable automatic control grouting pump for shield tunneling machine

Abstract

The invention relates to the field of shield tunneling machine construction, in particular to a programmable automatic control grouting pump for a shield tunneling machine. The programmable automatic control grouting pump comprises a support, discharge mechanisms, material suction mechanisms, delivery cylinder mechanisms, a water tank, pumping cylinder mechanisms and a hydraulic control valve set. The discharging mechanisms, the material suction mechanisms, the delivery cylinder mechanisms and the pumping cylinder mechanisms are of a symmetric double-set structure. The hydraulic control valve set controls the discharging mechanisms and the material suction mechanisms to motion. The hydraulic control valve set controls pumping cylinders to drive the delivery cylinder mechanisms to do reciprocating motion and realize suction and pumping of mortar. The programmable automatic control grouting pump for the shield tunneling machine can be controlled independently and controlled logically through programming, and is high in automation degree. The hydraulic control valve set is compact in structure and small in occupied space. The number of components is little, and cost is saved. The programmable automatic control grouting pump can be used for synchronous grouting, delivery of bentonite and other work during shield construction, can realize alternate and continuous working conditions of a dual-pumping system and is wide in application range.

Description

technical field [0001] The invention relates to the field of shield tunneling machine grouting construction, in particular to a programmable automatic control grouting pump for shield tunneling machines. Background technique [0002] As an important supporting equipment of the shield machine, the grouting pump needs to quickly and efficiently inject the mixed cement slurry into the gap between the tunnel wall and the segment due to the advancement of the shield body according to the set pressure, so as to control the settlement of the ground surface. At present, after the mud pump works for a long time, the seal and parts in contact with the mortar are severely worn, and the service life of the key parts is short, resulting in a decrease in grouting pressure and poor grouting continuity; and a complex control system is used, which is costly and difficult to control. The precision is not ideal. Contents of the invention [0003] The purpose of the present invention is to o...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of short working life, poor sealing of the pump body, poor grouting pressure and continuity, high cost and complex structure of the control system in the existing shield machine grouting pump, so as to realize a synchronous or Alternate automatic grouting operation, good sealing performance, high grouting continuity and reliability, low control system cost, relatively simple structure programmable automatic control grouting pump for shield machine

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