An online detection device and method for a crane track

Abstract

The invention discloses a crane track online detecting device and method. The device comprises two laser ranging devices, an imaging detection device and a master station. Each of the two laser ranging devices is formed by a base, a rotating device and a leveling device on the base, and a laser range finder on the rotating device. The rotating device drives the laser range finder to rotate, and the leveling device adjusts laser emitted by the laser range finder to be in a horizontal direction. The imaging detection device is formed by a base, rotating devices on the base, and industrial cameras and imaging plates on the rotating devices. The rotating device can drive the industrial camera and the imaging plate to rotate. The rotating devices of the imaging detection device and the industrial cameras and the imaging plates on the rotating devices are divided into two groups, one group and one laser ranging device act for imaging, and the other group and the other laser ranging device act for imaging. The master station calculates the span and height of double tracks and the height and levelness of a single track according to imaging results sent by WIFI, and the online detection ofthe crane track is completed.

Description

technical field [0001] The invention relates to the field of crane track detection, in particular to a crane track online detection device and method. Background technique [0002] Lifting machinery is widely used and plays an indispensable role in all walks of life, especially in industrial production. When the crane works for a period of time or is often under heavy load conditions, the crane track is very likely to be deformed, resulting in rail gnawing, which greatly threatens the safe operation of the crane. Such parameters are crucial to the safe operation of the crane. [0003] At present, some scholars at home and abroad have proposed new methods for the online detection of crane rails, mainly including laser alignment measurement methods and total station measurement methods. A relatively high accuracy can be obtained by measuring with a total station, but there are two disadvantages in the existing total station measurement method: one is that the total station n...

AI Technical Summary

Problems solved by technology

A relatively high accuracy can be obtained by measuring with a total station, but there are two disadvantages in the existing total station measurement method: one is that the total station needs to be fixed on the track to aim at the reflective prism, the working environment is established in the air, and the surveyors It is necessary to climb on the crane track for inspection, the working environment is complicated and dangerous, and because the total station is large in size and heavy in weight, it is very inconvenient to build a station before measurement, and the actual site environment is complex and changeable, and it is often not easy to build a station in the air; Because the total station needs to be fixed on one track for measurement, when measuring another track, it is often necessary to move the total station to another track to rebuild the station, which undoubtedly increases the workload and difficulty of the inspection work

[0004] Due to the particularity of the crane track, the current detection methods and detection systems basically require inspectors to carry out inspections on the crane track, and the crane cannot work during the measurement, which will seriously affect the normal production order, and the traditional measurement method is inefficient. There is a lot of manpower, most of which are high-altitude operations, the inspection work is very inconvenient and there are certain risks

[0005] For example, the patent document CN 105651221 A discloses an online detection method for crane rails. First, a laser collimator and a fixed laser receiving target are set on the electromechanical rail of the crane to establish a collimation reference system; The laser receiving target, the laser displacement sensor and the one-dimensional tilt sensor measure the crane mileage data, the real-time displacement data of the crane, the gauge data of the two rails, the straightness data of the rails, the relative elevation data of the rails and the relative height difference data of the two rails in real time, In this way, the real-time detection of the crane track is realized, but the detection method requires a lot of equipment to be installed and the cost is high. The laser detection device is easily affected by the vibration generated by the crane operation and causes measurement errors in height, span and levelness, and it is impossible to inspect and correct the device in time. The error caused by

The patent document CN 203964881 U discloses a crane track detection system. The total station is fixed on the ground to build a station, and a unified global coordinate system is established by the total station. The total station is aimed at the optical path reflection device in real time to measure the bullseye coordinate data. , the PC performs data processing, and generates inspection reports on parameters such as the straightness of the crane track, the span of the double rails, and the height difference, which improves the safety of the inspection work. All comparisons require inspection personnel to operate, and the automatic detection of the track has not been realized, and when the track is long or there is an obstruction, the total station cannot accurately identify the detection bullseye

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