Fault diagnosis method and system of vibration reduction system of concrete pump car and concrete pump car

Abstract

The invention provides a fault diagnosis method and system of a vibration reduction system of a concrete pump car and the concrete pump car. The fault diagnosis method of the vibration reduction system of the concrete pump car includes that: the included angle between two connected knuckle arms used for starting an active vibration reducing knuckle arm oil cylinder is obtained; whether the included angle continuously increases or decreases in a preset time is judged; and a vibration reduction control valve block arranged between the two knuckle arms is determined to have faults in the condition that the included angle continuously increases or decreases in the preset time. By adopting the fault diagnosis method and system, whether the vibration reduction control valve block is abnormal can be judged according to the change conditions of the included angle of the two adjacent knuckle arms, which can reflect arm support posture change, accordingly methods for judging the working state of the vibration reduction control valve block are provided, the integral performance of the active vibration reduction system of the concrete pump car is greatly improved, and the concrete pump car is ensured to work safely and stably.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a fault diagnosis method and system for a concrete pump truck vibration damping system and a concrete pump truck. Background technique [0002] Concrete pump truck is a special machine used for conveying and pouring concrete, and has gradually become an indispensable key equipment in building construction. The structure of the boom system of the concrete pump truck is complex, and the vibration will be generated during the pumping process. The vibration performance of the boom is affected by many aspects such as working conditions, pumping displacement and boom attitude. [0003] At present, multi-section booms, long booms, and large displacement of concrete pump trucks have become the development trend of concrete machinery, and more stringent requirements are put forward for the vibration characteristics of the boom. How to reduce the vibration of the boom in the vertical p...

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Problems solved by technology

[0006] The present invention aims to provide a fault diagnosis method and system of a concrete pump truck vibration damping system and a concrete pump truck to solve the problem of complex detection and control components of the active vibration damping system of the boom frame of the concrete pump truck in the prior art and difficulty in failure. Analyze issues affecting job stability

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