Patent ID: 11873718
Assignee: ZHEJIANG UNIVERSITY CITY COLLEGE
Field: Civil engineering (Other fields)
Classification: CPC E  Y | IPC E

Claim 6:
7. A method for using the propulsion control device of claim 1, comprising the following steps:
step 1, after a tunnel is entered and an excavation is started, controlling, via the support arm hydraulic controllers, the support plates of the two propulsion control modules to rise synchronously, so as to support a 3D printed tunnel pipe;
step 2, keeping the support plates of the two propulsion control modules to always support the 3D printed tunnel pipe, so as to ensure a stable structure of the tunnel, and at the same time, making the barrel bodies advance forward with a stroke relative to the propulsion sliding sleeves by the propulsion control assemblies using counter forces provided by the support plates and thrusts provided by the propulsion hydraulic cylinders;
step 3, lowering the support plates of one propulsion control module until the support plates are closed, and contracting a propulsion hydraulic cylinder extending end to pull the propulsion sliding sleeve to a front section of the barrel body; and maintaining the support plates of the other propulsion control module in a support state, and extending the propulsion hydraulic cylinder extending end to make the barrel body advance;
step 4, lifting the support plates of the propulsion control module that are closed in step 3 and maintaining the support plates in the support state; lowering the support plates of the other propulsion control module until the support plates are closed, and contracting the propulsion hydraulic cylinder extending end to pull the propulsion sliding sleeve to the front section of the barrel body; and extending the propulsion hydraulic cylinder extending end of the propulsion control module with the support plates lifted to make the barrel body advance; and
step 5, repeating step 3 and step 4 to make the barrel bodies advance continuously.