Load Characteristics of Conical Cutterhead for Full Section Shaft Boring Machine Based on ADAMS
The conical cutterhead of the full-section shaft boring machine possesses the advantages of good guidance and convenient attitude adjustment in the construction of the shaft.As for the dis cutters are the most direct rock-breaking tool in the shaft boring machine construction,it's full of meaning for rational design of the cutterhead tooling system and adjustment of equipment posture during excavation process to obtain the load distribution rules.The coupling model between the conical cutterhead and rock mass of the full section shaft boring machine was established based on ADAMS and the normal excavation of the machine was modeled by reasonably exerting the constraint condition.The load distribution laws of the conical cutterhead and cutters for the full section shaft boring machine were acquired.The results show that on account of different installation methods,the lateral force and rolling force of the positive rolling cutter are bigger than those of the central rolling cutter,which put forward higher requirements for the connection strength between the positive rolling cutter holder and the spoke.As the installation radius of the cutters on the cutterhead increases,the vertical force on it also increases.Compared with the positive rolling cutter,the resultant load of the central rolling cutters possesses better load stability with less fluctuation.As the installation radius of the cutter on the cutterhead increases,the stability of the resultant load on the cutter become worse with greater fluctuations.
full section shaft boring machinedynamic simulation based on ADAMSconical cutterheadload of disc cutterrain flow countingstability analysis
万方数据
维普
