Dynamic load estimation method for crawler driving system of continuous mining equipment based on similarity theory

Abstract

The invention discloses a dynamic load estimation method for a crawler driving system of continuous mining equipment based on a similarity theory. The method comprises the following steps: simulatingthe crawler driving system of the continuous mining equipment through a model trolley, arranging a strain gauge on a driving wheel, and deriving a similarity criterion by determining the physical quantity associated with the dynamic load estimation of a continuous mining driving system; measuring real-time data of the rotating speed, the vibration acceleration and the strain through a trolley experiment, and substituting the real-time data into the similarity criterion to calculate to obtain the dynamic load of the continuous mining driving system; and finally, importing a three-dimensional model of the continuous mining driving system into dynamic simulation software for simulation, so as to obtain dynamic load data of a chain plate pin shaft, and comparing the dynamic load data with dataobtained by the similar theory so as to modify the three-dimensional model. According to the dynamic load estimation method for the crawler driving system of the continuous mining equipment based onthe similarity theory provided by the invention, the driving force of the driving wheel of the model trolley is tested, the dynamic load of the continuous mining driving system is estimated through the similarity theory, the dynamic load of the continuous mining driving system can be indirectly measured, and the problem that the dynamic load of the continuous mining driving system cannot be measured actually under a mine is solved.

Description

technical field [0001] The invention belongs to the technical field of force estimation of pin shafts between chain plates of a continuous mining driving system, and relates to a method for estimating dynamic loads of a crawler belt driving system of continuous mining equipment based on similarity theory. Background technique [0002] The continuous mining machine is a kind of comprehensive excavation and short-wall mining equipment, which integrates cutting, walking, transfer, and spraying and dust removal. The walking part of the mining machine. The working environment of the crawler driving system of continuous mining equipment is harsh, and it has been running for a long time on waterlogged and uneven roads. The continuous mining driving system bears a large load and vibrates violently during operation. Large, in this working environment for a long time, the pin shaft between the chain plates is easy to fatigue and fracture. [0003] Due to the large volume of the craw...

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Problems solved by technology

[0005] In order to solve the problem of difficult measurement of the dynamic load of the crawler driving system of the existing continuous mining equipment, the present invention discloses a method for estimating the dynamic load of the crawler driving system of the continuous mining equipment based on the similarity theory. Strain gauges are arranged on the driving wheel for testing The driving force received by the driving wheel is estimated by the dynamic load on the driving wheel of the trolley to estimate the dynamic load of the continuous mining driving system by using the similarity theory, so as to realize the indirect measurement of the dynamic load of the continuous mining driving system

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