Deflection measuring device and method for mechanical arms of engineering vehicles

Abstract

The invention provides a deflection measuring device for mechanical arms of engineering vehicles, comprising a calibration target which is installed at the end of a movable arm of a mechanical arm andis perpendicular to the extension line direction of the mechanical arm under no deflection deformation of the mechanical arm, a laser emitter which is installed at the root of a fixed arm of the mechanical arm and is used for emitting laser to the calibration target along a direction parallel to the axis of the fixed arm to leave identifiable laser spots on the calibration target, an inclinationangle measuring device which is installed on the calibration target and is used for measuring the included angle produced by the calibration target before and after deflection deformation of the mechanical arm, and a controller which is used for acquiring the position information of the laser spots on the calibration target and the included angle measured by the inclination angle measuring deviceand calculating the deflection of the mechanical arm after deflection deformation. The deflection measuring device adopted by the invention is relatively convenient in installation, the use and operation steps are relatively simple, and the detection results are intuitive and accurate. The safety of engineering vehicles in mechanical operation is improved.

Description

technical field [0001] The invention relates to the field of engineering measurement, in particular to a deflection measuring device and method for a mechanical arm of an engineering vehicle. Background technique [0002] Many current engineering machinery have mechanical arms, such as cranes and rock drilling rigs. When such engineering vehicles with mechanical arms are hoisting, the originally straight arm will be bent and deformed due to the lifting weight. To ensure The operation safety and construction accuracy of construction machinery require the measurement of the degree of bending deformation of the boom, that is, the measurement of the deflection of the boom. [0003] In the prior art, most of the devices and methods for measuring deflection are too complicated in the process of implementation, and require relatively high technical support. For example, there is currently a deflection measurement method that needs to use at least two cameras to shoot a multi-secti...

AI Technical Summary

Problems solved by technology

In another patent document, an in-situ monitoring system for measuring the deflection of parts, the detection system used is only suitable for small parts

Moreover, there is no device and supporting method for deflection measurement for the actual situation of the rock drilling rig

[0004] In view of the shortcomings of the prior art described above, a high-precision, simple and feasible deflection measuring device for engineering vehicle mechanical arms is needed to solve the problems of the prior art that the installation of the deflection measuring device and the structure are too complicated and the technical requirements are high

Images