Vibration-based wheel loader loading capacity measurement method

Abstract

The invention provides a vibration-based wheel loader loading capacity measurement method. The measurement method comprises the steps that the loader is set to the idle state, the bucket is arranged on the standard position and the acceleration of three points is acquired; the acceleration around the hinge point of a moving arm cylinder and a moving arm of the bucket within a certain period of time is calculated according to the synthetic principle of motion; the relationship between the peak of the power spectrum density curve and the loader loading capacity is explored and a neural network is established based on the relationship between the peak of the power spectrum density curve and the loader loading capacity; and the peak of the power spectrum density curve obtained by transformation of the curve of the acceleration around the hinge point of the moving arm cylinder and the moving arm of the bucket within the certain period of time is inputted to the neural network so as to calculate the loading capacity of the loader. Only the acceleration of three points requires to be acquired without reconstruction of the moving arm cylinder of the loader and the structure thereof so thatthe integrity and the flexibility of the loader structure can be reserved and the method has the advantages of simple installation and convenient disassembling. The method is suitable for various models of loaders or vehicles so as to have the advantage of high universality.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a method for measuring the load capacity of a wheel loader based on vibration. Background technique [0002] Loaders are widely used in engineering construction such as roads, railways, construction, hydropower, ports, and mines. With their advantages of fast operation speed, high efficiency, good mobility, and easy operation, they have become an important machine for earthwork construction in engineering construction. kind. The main job of the loader is to shovel and dump the material into the transport vehicle. When the loader is loaded with too much material, the possibility of side tipping is increased under complex working conditions. At the same time, it is easy to cause overloading of transport vehicles, reduce the service life of transport vehicles, and lead to penalties for road supervision. When the loader loads too little material, the performance of the loader c...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for measuring the load capacity of a wheel loader based on vibration, aiming to solve the problem of how to retain the flexibility of the loader without modifying the boom cylinder

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