A fine digging control method for a trailing suction dredger

Abstract

The invention relates to a dredging control technology of a dredger, and discloses a fine dredging control method for a trailing suction hopper dredger. In the method, the ascending or descending amplitude parameter of a drag is input to a controller through a pulling and piling device, and the controller is used for converting a signal received from the pulling and piling device into a control signal for lifting or lowering the drag, wherein the controller is used for controlling the lifting or lowering duration of the drag; when the lifting or lowering duration of the drag ends, the controller is used for automatically disconnecting an output control signal. The working state of the controller is displayed via a working indicating lamp. In case of an emergency, construction personnel can transmit an emergency lifting control signal to a drag control mechanism through the controller. According to the control method, fine dredging of the drag can be realized, and fine dredging control of the trailing suction hopper dredger can be realized even when the control accuracy of a drag depth position surpasses the range of manual control capacity.

Description

technical field [0001] The invention relates to a dredging control technology of a dredger, in particular to a precision dredging control method of a trailing suction dredger. Background technique [0002] In the existing trailing suction dredger, the dredger controls the positive and negative rotation of the bending pipe winch, the middle rake winch and the rake head winch through three control handles to realize the lifting or lowering of the entire rake arm pipe, so as to achieve control The purpose of rake head depth position. In the actual construction process, when the change value of the required depth position of the rake head is small, the dredger manipulates the control handle of the rake head winch to control the depth of the rake head, and the real-time depth position of the rake head is displayed by a rake arm position monitoring screen , for monitoring by dredgers. When the handle is pushed forward, the rake head will continue to lower; when the handle is in ...

AI Technical Summary

Problems solved by technology

In this case, if the rake head position is required to be lowered by 10cm, the duration of the control handle pushing forward may only be 600 milliseconds, which means that the dredger needs to pull the control handle back to the middle immediately after pushing it forward position, even if the dredger does this, the actual action time of the drag winch in this process cannot be precisely controlled by the dredger

In fact, even for a slightly large position change, the dredger cannot accurately grasp the actual action time of the rake head winch during the control process, and must keep an eye on the monitor screen of the rake arm position at all times, which seriously affects the control accuracy

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