Detection device and detection method of boom system

Abstract

The invention provides a detecting device and a detecting method of a boom system. The detecting device of the boom system comprises a plurality of optical sensors, a light emitting source and a controller, wherein the optical sensors are arranged inside a sensing plane; the light emitting source is installed on an arm end of the to-be-detected boom system, the light emitting source transmits a first light source vertically towards the sensing plane when the to-be-detected boom system stays at an initial position, the optical sensor corresponding to the position of the first light source senses the first light source and transmits a first triggering signal, the light emitting source transmits a second light source vertically to the sensing plane when the to-be-detected boom system stays at a hanging state, and the optical sensor corresponding to the position of the second light source senses the second light source and transmits a second triggering signal; and the controller determines a sidewise bending value and an amplitude variation value of the to-be-detected boom system according to the first and second triggering signals. Due to the adoption of the detecting device of the boom system, the real sidewise bending value and the real amplitude variation value of the boom system can be determined.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a detection device and a detection method of a boom system. Background technique [0002] Before the crane leaves the factory, it needs to test and calibrate its working state on the test site. When the crane is in the working state of hoisting, due to the influence of factors such as the moving inertia of heavy objects, the gap between the arms, and the wind load on one side, the arm frame system often undergoes lateral bending deformation perpendicular to the luffing plane-side bending (different from vertical bending deformation in the luffing plane). Side bending deformation will inevitably change the amplitude of the jib. [0003] Due to the large size and hollow structure of the cylinder body of the crane jib system, and the plug-in pin device is arranged inside the cylinder body, it is inconvenient to arrange the sensor when measuring the side bending and amplitude of ...

AI Technical Summary

Problems solved by technology

[0004] 1) The side bending and amplitude values ​​of the boom system cannot be obtained through actual measurement during hoisting, and the real side bending and amplitude values ​​of the boom system cannot be obtained

The finite element calculation is based on a series of mechanical assumptions, and the coincidence between the calculated side bend and amplitude value and the actual value of the actual hoisting has not yet been verified;

[0005] 2) The side bending and amplitude values ​​calculated by finite element are based on the ideal hoisting conditions, and the actual boom system is deformed due to the influence of various factors such as the site, wind load, and worker's operating proficiency when the crane is hoisting There will inevitably be deviations between side bends, amplitudes, and finite element theoretical calculation values, and the theoretical calculation values ​​are difficult to serve as a reference for the optimal design of the jib system, the verification of the finite element calculation method, and the crane safety control strategy during the lifting process

At present, in the test stage before the crane leaves the factory, the side bending and amplitude values ​​of the crane jib system cannot be obtained, and the parameters of the side bending and amplitude of the crane cannot be calibrated

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