| Trenchless refers to the use of various rock and soil drilling equipment and technical means to excavate a very small part of the surface(generally refers to the small area excavation at the entrance and exit)through directional and directional drilling.It’s a new construction technology for laying,replacing and repairing various underground pipelines.The pipe jacking cutter head is a key component in the design and manufacture of the pipe jacking machine,as well as the main working part in the pipe jacking construction process.Its function is mainly to break and cut the rock and soil,realize the flow of the slag and support the excavation interface.The basic issues about cutter head design include cutter head selection and cutter head design criteria related to geological parameters.In order to study the design and performance analysis of the cutter head of the pipe jacking machine better,this article carried out the research on the parameterized modeling,force analysis and design criteria of the pipe jacking cutter head.The main research work of this paper is as follows:Explain the method of determining various parameters in pipe jacking construction,including pipe jacking radius,cutter head speed,cutting depth,pipe jacking torque and construction jacking force.Through formula and theoretical analysis,it is determined to use Archimedes spiral method.Advantages of tool placement.Explains the type of cutter head panel,the method of tool layout and other related issues related to cutter head design,puts forward the design criteria of the cutter head,provides a theoretical basis for the evaluation of the performance and reliability of the cutter head,and derives and gives the theoretical strength and The calculation formulas of the relevant parameters in the cutter head design such as stiffness,thickness of the face plate and back plate,the cross-sectional area size of the cutter head corbel and the key connection working surface.Substituting the data into the formula calculation provides data support for the finite element analysis of the cutter head later.The static analysis,modal analysis,harmonious response analysis and other forms of finite element analysis of the cutter head model,verify the rationality of the cutter head design and the reliability of theoretical calculation,at the same time,find out the relatively weak links of the cutter head,and based on this,put forward suggestions for improving and optimizing the cutter head..According to the determined program function,using SolidWorks as the development platform and visual basic as the development tool,the CAD system of the cutter head of the earth pressure balance pipe jacking machine was developed to realize the parametric modeling of the cutter head of the pipe jacking machine.Figure[38]Table[6]Reference[65]... |
