Ebz45 Boring Machine Cutting Head Parameters To Improve The Design And Dynamic Simulation

Longitudinal-axis tunneling machine is an important device widely used in mechanized driving such as tunnel, railways, highway culvert construction and mine tunneling.And the cutting mechanism which directly taking part in rock cutting is consuming most of the machine's power. The design of the reducer must meet the requirements of transmission accuracy and intensity standard, also guarantee small in volume and tight in structure; there are a lot of parameters on cutting head while most of them are influencing and constriction each other, some are related to coal properties, In the design of cutting head we must take an overall consideration of the parameters matching that we can achieve high efficiency, high reliability and longer service life. Based on the theory of rock fragmentation and the method of the coal winning machinery design to design the longitudinal-axis tunneling machine EBZ45, including the improvement of the machine reducer, designing the parameters of the pick arrangement of the cutting header and the welding fixtures of the picks, finally, studying the property of the pick cutting the rock.Have a research of the tunneling machine EBZ45, designed and made improvement of the reducer which had a lot of problems because of the irrational in the structure, the redesigned reducer shows to have good effect of having uniformly distributed load and improves the service life of the bearings.Have a research of the arrangement of the picks in the tunneling machine EBZ45, put forward an equal-rise-angle spiral lines to distribute the picks, considering the contour of the cutting head, the characters of the coal, the excavating conditions and the optimal line spacing, and the method is applied to improve the arrangement of the picks in the tunneling machine EBZ45.Developed a new welding fixtures of the picks at the foundation of the installing angles and the arrangement of the picks which can quickly and accurately locate the pick on the cutting headBuild a finite element model for the pick cutting rock was discussed with the finite element software, The influences of resistance on different cutting angel and the relations between cutting thickness and cutting energy consumption in different cutting angel were discussed, the whole result provides a new way in the field of dynamic modeling and simulation for pick cutting rock...