Detection method and detection system for heavy crane hook cable pull

Abstract

The invention provides a detection method and detection system for the oblique pull of a heavy-duty crane hook, which can obtain the satellite signal and direction information of the center position of the top of the boom and the top of the hook in real time; obtain the satellite signal and direction information of the cockpit position in real time, and Generate real-time RTK differential data according to the satellite signal; according to the satellite signal and RTK differential data at the center position of the top of the boom and the top of the hook, respectively generate positioning information of the center position of the top of the boom and the center of the hook top relative to the position of the cockpit; According to the positioning information of the center position of the top of the boom and the top of the hook, the target point is determined, and the relative position of the target point of the hook relative to the vertical projection of the top of the boom is obtained. At the same time, the direction information of the top of the boom and the hook is used to obtain the The rotation angle and the attitude information of the hook are obtained to obtain a two-dimensional radar map. The invention improves construction efficiency, saves additional communication costs and labor costs, and greatly reduces the probability of cable-stayed rollover.

Description

technical field [0001] The invention relates to the technical field of monitoring the inclined pull of a heavy crane hook, in particular to a detection method and a detection system for the inclined pull of a heavy crane hook. Background technique [0002] When working with large cranes, generally rely on the driver's observation experience and cooperation with external staff to obtain the approximate position of the hook for adjustment and control. The obtained position information is not intuitive and accurate, and there are low work efficiency, insufficient timeliness, communication Unsmooth and high labor costs, so the incidents of the hook pull causing the crane to roll over frequently occur, resulting in significant economic losses and personal injury. [0003] After searching, it was found: [0004] The Chinese invention patent with the authorization announcement number of CN107140538B "Odometer GNSS Combination Building Construction Tower Crane and Hoisting Stakeout...

AI Technical Summary

Problems solved by technology

[0005] The central position of the boom and hook of the crane is a complex pulley block transmission device and a steel cable. It is very difficult to install a positioning module at the center of the boom and hook, and it will affect the normal operation of the cable. It will also have a great impact on the signal reception of the antenna. Therefore, there is no precedent for installing the positioning module at the center of the boom and hook in the prior art

In addition, the simple positioning module cannot know the specific direction information, including the rotation angle of the boom and the attitude information of the hook, and cannot intuitively and accurately understand the real state of the hook's cable pull

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