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Crane main beam lower deflection measuring device based on image processing

A deflection measurement and image processing technology, which is applied in the field of deflection measurement devices under the main beam of cranes based on image processing, can solve the problems of high requirements on the flatness of the ground, complicated instrument alignment operations, and large environmental impact, and saves money. The effect of manpower and material resources, improving test efficiency, and simplifying the measurement process

Active Publication Date: 2020-09-22
GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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  • Abstract
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Problems solved by technology

However, before the measurement, it is necessary to climb up the main beam to post the scale, and the theodolite has high requirements on the flatness of the ground, the alignment of the instrument is cumbersome, and it is greatly affected by the environment
At present, there is also a method of using a laser range finder to measure the deflection of the main girder. The laser range finder is placed directly below the mid-span of the main girder to measure the change in the vertical distance of the main girder before and after loading. This method is simple and convenient, but the There are unsafe factors directly below it when hoisting

Method used

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  • Crane main beam lower deflection measuring device based on image processing
  • Crane main beam lower deflection measuring device based on image processing
  • Crane main beam lower deflection measuring device based on image processing

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific ...

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Abstract

The invention discloses a crane main beam lower deflection measuring device and method based on image processing, and the device comprises a laser positioner which is used for transmitting laser to amain beam web of a crane, and positioning the midspan position of a main beam; a camera, used for shooting the main beam web to obtain a shot picture of the laser relative to the lower edge position of the main beam web before and after the main beam loads the rated load; a supporting part, used for supporting the measuring device; an adjusting device, arranged on the supporting part and used foradjusting the inclination angles of the laser locator and the camera in an upward overturning mode; and a calculating device, electrically connected with the camera and is used for carrying out imageprocessing on the shot picture, obtaining the displacement of the laser in the shot picture before and after the rated load is loaded on the main beam, and obtaining the lower deflection based on theheight of the web plate of the main beam. The operation is simple, the measuring device is portable, the production safety is ensured, and the downward deflection can be accurately obtained.

Description

technical field [0001] The invention relates to the technical field of crane measurement, in particular to an image processing-based device for measuring the lower deflection of a main girder of a crane. Background technique [0002] The deflection of the main girder of the crane has an important impact on the bearing capacity of the crane, the bridge structure, the operation of the trolley and the safety of use. In order to ensure the safe use of the crane, according to the requirements of TSG Q7015-2016 and TSGQ7016-2015 in the safety technical specifications for special equipment, when the special inspection personnel conduct the first inspection of the crane and the supervision inspection of major repairs for installation and transformation, the deflection of the main girder under the rated load Measurement is one of the necessary inspection items, and it is of great significance to realize the rapid measurement of the deflection of the main beam. [0003] At present, t...

Claims

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Application Information

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IPC IPC(8): G01M5/00G01B11/16
CPCG01M5/0008G01M5/005G01M5/0075G01B11/16
Inventor 高伟杨明超汪传民朱历平胡庆楠唐玺添卓俊铭王梦圆
Owner GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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