Online monitoring system and method of deflection of portal crane girder

A technology of gantry crane and monitoring system, which is applied in the direction of load hanging components, transportation and packaging, safety devices, etc., and can solve the problems of inconvenient use, low precision, and many intermediate links in measurement
CN105347192AInactive Publication Date: 2016-02-24LIAONING TECHNICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIAONING TECHNICAL UNIVERSITY
Publication Date
2016-02-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an online monitoring system and an online monitoring method of the deflection of a portal crane girder, which belong to the technical field of deflection monitoring of the portal crane girder. The system comprises a reflecting device, a pulse distance measuring device, a data recording device and a data analyzing and processing device, wherein the reflecting device is installed on a lower cover plate of the portal crane girder, the pulse distance measuring device is installed on a support leg of a portal crane, the output end of the pulse distance measuring device is connected with the input end of the data recording device, and the output end of the data recording device is connected with the input end of the data analyzing and processing device. According to the system, the deflection change of the portal crane girder can be monitored in real time in the process of operation, the whole management level is increased, the safe operation of the crane can be greatly guaranteed, the personal safety of working personnel is protected, and accidents are avoided. Compared with the prior art, the system has the advantages of reasonable design, convenience in use and capability of stable long-term real-time monitoring and detection.
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Description

technical field

[0001] The invention belongs to the technical field of monitoring the deflection of a main girder of a gantry crane, and in particular relates to an online monitoring system and method for the deflection of a main girder of a gantry crane. Background technique

[0002] In order to ensure the safe use of the gantry crane, it is often necessary to measure its main technical parameters - camber, warp and deflection during its use and inspection; at present, the measurement of the deflection of the main girder of the crane is mainly by drawing steel wires method, theodolite method, leveling method, connecting device method, laser rangefinder, using steel wire rope and tape measure or level instrument and tape measure for measurement, manual alignment during measurement, human eye interpretation, and due to the downward deflection caused by the self-weight of the steel wire, this This method must consider the correction value, which is more troublesome, and there ...

Claims

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