Detection method and detection device for tipping state of crane

Abstract

The invention discloses a detection method and a detection device for the tipping state of a crane. The disclosed detection method includes the following steps: 11) selecting tipping parameters comprising a dip angle of a work plane opposite to the level surface, a rotation angle, a lifting angle of a jib, and the length of the jig; 12) obtaining tipping lifting weight by sampling in a space formed by the tipping parameters; and establishing the function relationship between the tipping parameters and the tipping lifting weight; 13) substituting the current tipping parameters into the function relationship so as to obtain the tipping lifting weight corresponding to the current tipping parameters; and 14) comparing the current actual lifting weight with the tipping lifting weight corresponding to the current tipping parameters, thus determining whether the crane is in the dangerous tipping state. With the detection method, operators can know whether the crane is in the dangerous tipping state and the safety property of the crane is improved; in addition, the dip angle of the work plane opposite to the level surface is introduced as one tipping parameter, so that the influence on the judgment on the tipping when the crane is in a non-horizontal state is avoided and the judgment on the tipping of the crane is more correct and reliable.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a method for detecting the tipping state of a crane. The invention also relates to a crane tipping state detection device. Background technique [0002] As a large-scale construction machinery, the safety performance of a crane is one of the important indicators for considering its overall performance. [0003] During operation, it is very dangerous if there is a tipping accident of the crane, so setting the anti-tipping safety device of the crane is an important means to ensure the safety factor of the crane. At present, the anti-tipping safety device on the crane is generally an electronic torque limiter or a hydraulic torque limiter. The working principle of the safety device is as follows: the characteristic curve of the crane is stored in the computer, and the characteristic curve reflects the hoisting weight that makes the crane overturn under different hois...

AI Technical Summary

Problems solved by technology

[0005] First, the characteristic curve of the crane is established when the working plane of the crane is horizontal, but due to the complex working environment, when the working plane of the crane is in a non-horizontal plane, the data monitored by the above characteristic curve of the crane is not accurate enough, and the anti-tipping safety device is easy Misjudgment is made, and the crane is prone to tipping over

[0006] Second, due to the narrow working space or the insufficient technical level of the operators, the outriggers of the crane are likely to be incompletely stretched, resulting in a smaller safe area of ​​the crane, and the crane is also prone to tipping over

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