An overload early warning method for the boom of a rescue wrecker

Abstract

The invention discloses a rescue wrecker lifting arm overload prewarning method. By combining with the structure and working characteristics of a rescue wrecker, a pitching angle of a lifting arm of the rescue wrecker and a dip angle of a rope are measured through two low-cost accelerometers, the length of the lifting arm is measured through a length sensor, the tension of the rescue wrecker by the rope is measured through a tension sensor, then, a Kalman filter algorithm is adopted to estimate the tension of the rope to the rescue wrecker in the horizontal direction and the vertical direction in real time, and finally, a torque balance principle analyzes if the rescue wrecker has the lifting arm overload danger, if so, the prewarning is performed beforehand. The rescue wrecker lifting arm overload prewarning method has such characteristics as high precision and wide application range, and can provide comprehensive and reliable lifting arm overload monitoring and prewarning to the rescue wrecker.

Description

technical field [0001] The invention belongs to the field of safety early warning of a rescue wrecker, and in particular relates to an overload early warning method for a boom of a rescue wrecker. Background technique [0002] In recent years, my country's road traffic accident wrecker rescue industry has developed rapidly. At the same time, the accidents of rescue wrecker vehicles during their operations have become more and more serious. The boom is one of the most critical components in the entire rescue and wrecker system, and it plays a very important role in rescue and wrecker operations. It can be used to lift heavy objects, straighten accident vehicles, etc. When the suspended object is too heavy and overloaded, it is easy to cause accidents such as the breakage of the boom or the rollover of the wrecker. The reason is that in addition to the subjective factors such as the operator's illegal operation, lack of experience and poor management, the self-monitoring tech...

AI Technical Summary

Problems solved by technology

When the suspended object is too heavy and overloaded, it is easy to cause accidents such as the breakage of the boom or the rollover of the rescue wrecker

The reason is that in addition to the subjective factors such as the operator's illegal operation, lack of experience and poor management, the self-monitoring technology of the rescue wrecker is not perfect, and the inability to provide operators with accurate early warning information in real time is also an objective reason that cannot be ignored

[0003] A utility model patent (patent name: early warning device for overloading of the crane arm of rescue wrecker, application number: 201020632634.6) discloses an early warning device for overloading of the crane arm of rescue wrecker, which fills the blank in the field of early warning of boom overload in China , has the advantages of low cost and good real-time performance, but this utility model patent is only for early warning when the boom breaks

Compared with vertical lifting conditions, when the rope is inclined, it is more likely to cause the center of gravity of the rescue wrecker to shift, resulting in a rollover accident during the operation

At present, no method or technology for early warning of boom overload under the condition of rope inclination has been proposed

Images