Deformation detection method and device for telescopic boom

Abstract

The invention discloses a method and a device for detecting deformation quantity of a telescopic boom. The telescopic boom comprises multiple sections of telescopic booms, and the method comprises the steps that the extension length of each section of telescopic boom in the multiple sections of telescopic booms is acquired respectively; the included angle of each section of telescopic boom and the horizontal plane is acquired respectively; the deformation quantity of the telescopic boom is determined according to the extension length of each section of telescopic boom and the included angle of each section of telescopic boom and the horizontal plane. Therefore, the accuracy of the detection result of deformation quantity can be improved, so that the boom bearing calculation accuracy is improved, the boom bearing performance can be improved favorably, and the method is simple and convenient.

Description

technical field [0001] The invention relates to the control field of mechanical equipment, in particular to a deformation detection method and device for a telescopic boom. Background technique [0002] With the continuous development of mechanical products, telescopic booms are more and more widely used in various industries. Due to gravity, the structure of the telescopic boom will be deformed, and the deformation will become larger and larger as the load increases. As a result of the increased deformation, the bending moment caused by the axial force of the boom will become a factor that cannot be ignored. It is usually necessary to apply some algorithms to detect the deformation of the telescopic boom, and to calculate the load of the boom in consideration of the deformation of the boom. [0003] Taking deflection as an example, the traditional deflection detection can be directly measured by dial indicator or displacement meter. There are many deficiencies in the dir...

AI Technical Summary

Problems solved by technology

There are many deficiencies in the direct measurement method. This method needs to draw steel wires or set up shelves at each measurement point, so sometimes it is impossible to perform direct measurement.

Moreover, when using the direct method for deflection measurement, the work is complicated and time-consuming no matter whether the instrument is deployed or withdrawn, and it is not suitable for equipment with complex working conditions and various postures

In addition, traditional deflection formulas can also be used for calculations, which can only be accurate enough for jibs with specific attitudes, and the results of deflection formulas and iterative calculations often need repeated verification

It is impossible to have a unified calculation standard for products with relatively random expansion and contraction and different processing errors. Therefore, errors caused by equipment processing differences and aging deformation cannot be eliminated.

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