A mud squeezing device for rectification of pipe jacking machine and rectification method thereof

Abstract

The invention discloses a mud extruding device for pipe pushing machine correcting and a correcting method thereof. The device comprises a front shield, a rear shield, a mud beating pump system, a mudfilling port and a hinge device, the mud beating system comprises a motor, a stirring spiral pump, a concentrated mud delivery pump and a mud hopper, the mud outlet of the mud hopper is connected with the stirring spiral pump through a pipeline, the stirring shaft of the stirring spiral pump is connected with the motor, the mud outlet of the stirring spiral pump is connected with the concentratedmud delivery pump, the outlet of the concentrated mud delivery pump is connected with a mud filling port through a pipeline, and the pipeline which is located between the mud filling port and the concentrated mud delivery pump is sequentially provided with a flow meter used for monitoring concentrated mud flow and a pressure difference sensor which is used for monitoring the pressure difference of the mud filling port and the front shield. The invention further discloses a pipe pushing machine correcting method. The device has the advantages of simple and compact structure, and the excavatingdirection of a pipe pushing machine is corrected through the squeezing effect of concentrated mud, which is environmentally-friendly and low in cost.

Description

technical field [0001] The invention relates to the field of tunnel engineering construction equipment, and specifically designs a mud squeezing device and a method for correcting deviation of a pipe jacking machine. Background technique [0002] The propulsion cylinder of the pipe jacking machine is generally arranged in the originating well, far away from the pipe jacking machine body. When the posture of the pipe jacking machine is inappropriate and needs to be adjusted, for example, the cutter head is lowered (head down), it is necessary to use the hinge system to correct the shield body to the predetermined excavation line. However, pipe jacking machines are generally used in shallower strata, and the reaction force of the soil is small, resulting in unsatisfactory or uncontrolled hinge correction. The shield body of the pipe jacking machine only forms a certain angle under the action of the hinge system, and the excavation direction still advances in the direction of ...

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Problems solved by technology

[0003] Chinese patent application CN201520217512.3 discloses a "two-stage deviation correction system for large-diameter pipe jacking machines". The system is equipped with a second-level deviation correction device, so it can ensure bidirectional linearity and deviation correction attitude control, and can realize simultaneous jacking of small curvature radius and bidirectional curves , and then solve the trajectory control problem in the process of large-diameter concrete curve jacking, but the system completely relies on the correction cylinder, which has high cost and limited jacking force, making it impossible to perform accurate correction

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