Deflection detecting system, method and device of suspension arm of engineering machinery and engineering machinery

Abstract

The invention discloses a deflection detecting system, a deflection detecting method and a deflection detecting device of a suspension arm of engineering machinery and the engineering machinery, which have the advantages that detecting precision is high and the operation safety of engineering machinery can be improved. The deflection detecting system comprises a controller, two basic jib GPS (global positioning system) position finders and a measuring point GPS position finder, wherein the two basic jib GPS position finders are positioned on basic jigs of a crane jib, and the straight line formed by the two basic jib GPS position finders and is parallel to the central axes of the basic jigs along the crane jig; the measuring point GPS position finder is positioned at the to-be-detected deflection part of the crane jib; the two basic jib GPS position finders and the measuring point GPS position finder are respectively used for determining the self space coordinate information; the controller is used for acquiring the determined space coordinate information from the two basic jib GPS position finders and the measuring point GPS position finder respectively, and determining the deflection of the crane jib at the to-be-detected deflection part according to the space coordinate information of the two basic jib GPS position finders and the measuring point GPS position finder.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a deflection detection system, method, device and construction machinery of a boom of construction machinery. Background technique [0002] At present, many construction machinery have booms, such as cranes, etc. When such construction machinery is hoisting, the originally straight boom will be bent and deformed due to the lifting weight. In order to ensure the safety of construction machinery, it is necessary to The degree of bending deformation of the boom is measured, that is, the deflection of the boom is measured. [0003] In the prior art, the deflection detection of construction machinery booms is mostly based on the principle of laser ranging. Take the deflection detection of the crane arm as an example, such as figure 1 As shown, a laser rangefinder 11 is installed on the basic arm 01 of the boom. If the deflection at the front end 02 of the boom is to be det...

AI Technical Summary

Problems solved by technology

[0004] However, the deflection detection scheme based on the principle of laser ranging in the prior art is applicable to very limited operating environments

For example, in a strong light or foggy working environment, it is difficult to ensure the accuracy of the distance measurement of the laser rangefinder, which leads to low accuracy of deflection detection and affects the operation safety of construction machinery

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