Drill jumbo telescopic arm limit working condition calculation method

Abstract

The invention discloses a drill jumbo telescopic arm limit working condition calculation method and belongs to the field of mechanical arm working condition calculation. The invention aims to solve the problem that the optimal design result of the telescopic arm cannot meet the actual engineering requirement due to the fact that the limit working condition of the telescopic arm of the drill jumbo is determined according to experience at present. Comprising the following steps: acquiring the gravity, gravity center position and rock recoil load of each component in the boom structure of the telescopic boom of the drill jumbo and the variation range of each degree of freedom of the boom structure; determining a telescopic boom top load calculation model; obtaining an optimization range of a novel biogeography optimization algorithm, and taking a calculation result of the telescopic arm top load calculation model as a habitat suitability index HSI; and initializing NH habitats, performing optimization through an optimization algorithm, and obtaining the habitat with the maximum top end load of the telescopic arm, wherein the corresponding freedom degree value combination is the limiting working condition of the telescopic arm, and the novel biogeography optimization algorithm includes an improved mobility model. The optimal solution of the limit working condition can be obtained.

Description

technical field [0001] The invention relates to a calculation method for the limit working condition of the telescopic arm of a rock drilling jumbo, and belongs to the field of calculating the working condition of a mechanical arm. Background technique [0002] The demand for tunnel construction in the construction of large-scale projects such as rail transit, highway transportation, and hydropower projects in various countries in the world is increasing. At present, the main methods of tunnel construction are drill and blast method and shield method. Explosive construction. [0003] Drilling jumbo is an indispensable equipment in drilling and blasting construction, which is used to drill blast holes on the tunnel section to be excavated. The telescopic arm in the boom structure of the rock drilling rig is a key component in the boom structure. One end of it is hinged with the body of the rock drilling rig, and the other end carries the main working mechanisms such as the s...

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Problems solved by technology

[0006] Aiming at the current problem that determining the limit working condition of the telescopic arm of the rock drilling jumbo based on experience will lead to the problem that the optimal design result of the telescopic arm cannot meet the actual engineering needs, the present invention provides a calculation method for the limit working condition of the telescopic arm of the rock drilling rig

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