Control method of advance rate of shield tunneling machine
A technology of driving speed and control method, which is applied in earthwork drilling, mining equipment, tunnels, etc. It can solve problems such as low efficiency, complicated fine-tuning process, and poor precision, and achieve high efficiency, simple control method, and high precision.
Active Publication Date: 2016-01-20
SHANGHAI MECHANIZED CONSTR GRP
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Problems solved by technology
[0004] The purpose of the present invention is to provide a method for controlling the tunneling speed of a shield machine, so as to solve the problems of complex fine-tuning process, low efficiency and poor accuracy in the slow-speed tunneling of the shield machine in the prior art
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[0021] When constructing an underground project, it is necessary to pass through a reinforced concrete pile foundation of a ground wall. This project adopts the method of cutting reinforced concrete with cutter head to pass through the underground reinforced concrete structure.
[0022] The shield machine must ensure a certain thrust when passing through the pile foundation, so that the cutter head can effectively cut the pile foundation. The setting of the balance pressure of the earth pressure balance shield machine is the key to the construction of the earth pressure balance shield machine, and maintaining and adjusting the set pressure value is an important link in the tunneling operation of the shield machine, which includes thrust, tunneling According to the relationship among velocity and unearthed volume, the earth pressure balance plays a leading role in the control of formation deformation. Therefore, the tunneling speed can only be controlled under the premise of e...
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The invention provides a control method of an advance rate of a shield tunneling machine, which comprises the steps of: controlling the advance rate of the shielding tunneling machine by adjusting a speed limiting control potentiometer of the shield tunneling machine, so that the advance rate of the shield tunneling machine is larger than zero and smaller than or equal to a set slow speed advancing maximal value; detecting a value of a first data register when the slow speed advancing maximal value is obtained, dividing the value by a first proportionality coefficient to obtain an end value of a second data register, and realizing conventional advancing of the shield tunneling machine by a first passage; dividing a maximal simulation input value of the shield tunneling machine by the end value of the second data register to obtain a second proportionality coefficient, realizing slow speed advancing of the shield tunneling machine by a second passage connected with the first passage in parallel, turning off or on the first passage and enabling the states of the first passage and the second passage to be opposite by a spare switch, and dividing the value of the first data register by the second proportionality coefficient to obtain a value of the second data register. The invention ensures the simplicity, high efficiency and high precision of the control method of the advance rate of the shield tunneling machine.
Description
technical field [0001] The invention belongs to the field of shield tunneling, in particular to a method for controlling the tunneling speed of a shield tunneling machine. Background technique [0002] In the construction of underground engineering, it is inevitable to pass through underground obstacles. In order to pass through underground obstacles, shield tunneling technology is often required. In general, the shield machine is mainly used to cut underground obstacles. However, when the strength of the underground obstacle is high, it is necessary to control the shield machine to make it excavate at a slow speed. The speed range of the slow excavation of the shield machine is generally 0-10mm / min, but this range is often not in line with the reality. Excavation requirements, in order to further improve the excavation efficiency and accuracy of underground obstacles, it is necessary to set a lower maximum value of slow excavation, and it is necessary to carry out the shie...
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Inventor 陈耀峰金福强蒋一德
Owner SHANGHAI MECHANIZED CONSTR GRP