A Load Calculation and Loading Method of the Cutting Head of a Virtual Prototype of Longitudinal Axis Tunneling Machine

Abstract

A method for calculating and loading the load of a cutting head of a virtual prototype of a longitudinal-axis roadheader, belonging to the technical field of virtual prototypes of mining equipment; including obtaining coal and rock occurrence conditions; obtaining the rotation angular velocity of the cutting head, and calculating the cutting speed of the cutting head; Obtain the swing angular velocity of the cantilever, calculate the lateral swing velocity of the pick; calculate the cutting resistance, traction resistance and lateral resistance of the pick; decompose the cutting resistance, traction resistance and lateral resistance of the pick orthogonally, and divide each The force on the pick is converted to the center of mass of the cutting head, and the three-dimensional force and moment on the cutting head are obtained; the load is applied to the center of mass of the cutting head through ADAMS; the present invention only needs to change the coal and rock occurrence conditions Complete the application of cutting head load under different working conditions, simplify the load application process and improve work efficiency; consider the time-varying nature of cantilever swing speed and cutting head speed, and the calculation results are accurate; can find the shortcomings in the design of roadheaders, Find the weak link in roadheader components.

Description

technical field [0001] The invention belongs to the technical field of virtual prototypes of excavation equipment, and in particular relates to a load calculation and loading method for a cutting head of a virtual prototype of a longitudinal-axis roadheader. Background technique [0002] The cantilever roadheader is one of the key equipment in fully mechanized excavation face. As the key component of the roadheader for crushing coal and rock, the cutting head consumes about 70% to 80% of the total power of the roadheader. The design quality of the cutting head will not only affect the working reliability and service life of the roadheader, but also play a decisive role in the cutting performance and cutting economy of the roadheader, and the load calculation of the cutting head based on the actual working conditions is the most important An important step in cutting head design. [0003] my country's mining equipment manufacturers have been using the traditional design mode...

AI Technical Summary

Problems solved by technology

[0004] The coal-rock occurrence conditions and the two-way coupling between the cutting head and the coal-rock cause the load on the cutting head to be nonlinear, impactful and strongly coupled, which is difficult to describe in a computer using simple function combinations. Therefore, it is necessary to find a reasonable and efficient method to realize the simulation and loading of the cutting head load, which is of great significance to the research and design of roadheaders

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