Simulation method of elevating fire truck landing leg counterforce

Abstract

The invention relates to a simulation method for elevating fire truck supporting leg counterforce, which comprises the following steps of: establishing models for all parts of an elevating fire truckby utilizing three-dimensional modeling software, assembling the models, and importing the assembled models into an ADAMS/View environment; boundary condition processing is carried out on the assemblymodel, and constraint creation and load application are included; motion simulation analysis: simulating the working condition of the fire fighting truck, and respectively carrying out static balanceanalysis and dynamic simulation analysis by creating a driving force; and obtaining a counter-force curve of the four supporting legs of the elevating fire truck. According to the method, all parts of the elevating fire truck are created in three-dimensional modeling software for modeling and are imported into ADAMS after being assembled; by creating constraint conditions for adjacent mechanism models and applying load and drive, the landing leg counter-force value is obtained, by adopting the method, the consistency of all structural member models participating in calculation and a real object can be ensured, and a continuous curve of the landing leg counter-force value is obtained through kinematics simulation calculation, so that the result is more accurate and reliable, and the calculation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of computer-aided design methods, in particular to a simulation method for raising the reaction force of a fire truck's legs. Background technique [0002] The outrigger reaction force of elevating fire trucks is the maximum normal reaction force borne by the outriggers during the elevating vehicle operation. This force is an important basis for the structural design of the sub-frame and the calculation of the strength of the outriggers. Grasping the force state of the outriggers during the operation of this type of fire truck and accurately calculating its possible maximum force value play an important role in the design of elevating fire trucks. [0003] The outriggers of high-lifting fire trucks adopt a four-point support method. The calculation of the four-point support reaction force is a statically indeterminate problem. It is usually calculated based on the four outrigger reaction forces derived from ...

AI Technical Summary

Problems solved by technology

However, in practical applications, the extreme values ​​of each outrigger are inconsistent, so the accuracy of the traditional calculation method is difficult to guarantee

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