Digging and anchoring all-in-one machine dynamic modeling and simulation method

Abstract

The invention provides a digging and anchoring all-in-one machine dynamic modeling and simulation method which comprises the following steps: setting a plurality of three-way acceleration measuring points on a digging and anchoring all-in-one machine, and obtaining actually measured acceleration data of the measuring points; determining load information of a cutting roller, and obtaining a working load spectrum of the digging and anchoring all-in-one machine in a working cycle; establishing a complete machine multi-body dynamic model, performing dynamic simulation by taking the operation parameters and the working load spectrum as excitation, and calibrating the actually measured acceleration data of the measuring points and the acceleration simulation data of the corresponding measuring points to obtain a target complete machine system dynamic model; and establishing a finite element model of a single key component, extracting a boundary load of the key component in a working cycle from a simulation result of the target complete machine system dynamics model as a boundary condition, and performing structural strength finite element simulation to obtain a stress state of the key component in each working condition in the working cycle. The problems that key component design lacks theoretical basis and the adaptability of designed finished products is poor are solved.

Description

technical field [0001] The invention relates to the technical field of tunneling equipment for underground coal mines, in particular to a dynamic modeling and simulation method for an integrated machine for digging and bolting. Background technique [0002] The current all-in-one bolter digging machine is a customized product, and there is no corresponding national standard or industry standard to guide the selection of product structure. In general, when checking the strength of its key load-bearing components, artificially set a typical posture based on experience, take the limit push-pull force of the oil cylinder and the limit torque of the cutting drum for static structural strength simulation, and then take a certain safety factor for evaluation. The static strength assessment has the following problems: [0003] First of all, the actual working process of the bolter digging machine is a dynamic process, including the typical four actions of cutting, pulling down, bot...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a dynamic modeling and simulation method for an integrated bolter digging machine, aiming at solving the drawbacks of the existing simulation methods for an integrated bolter miner. The specific technical scheme is as follows:

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