Crane, and vibration self-stabilizing control method, device and system

Abstract

The invention discloses a crane, and a vibration self-stabilizing control method, a device, and a system. The vibration self-stabilizing control method comprises the steps that dynamic response signals of execution components on an engineering machine are acquired, analyzed, and identified; a system vibration frequency is acquired; an excitation frequency and a position of an excitation source are acquired when the engineering machine works; the execution components correspondingly driven by the excitation source are determined by the position of the excitation source; whether the system vibration frequency and the excitation frequency corresponding to the system vibration frequency resonate is judged; and an adjustment signal is sent, and the excitation frequency is adjusted when resonance occurs. Therefore, with the adoption of the method, the resonance can be detected timely and eliminated timely on the engineering machine.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a vibration self-stabilizing control method, device and system, and a crane provided with a vibration self-stabilizing control system. Background technique [0002] Vibration is a movement phenomenon of all moving machinery and engineering structures subjected to dynamic loads. Vibration signals contain information about the inherent characteristics and operating conditions of machinery and structures. The vibration state also reflects the quality of structural operation, such as the safety and comfort of vehicles, aerospace equipment, construction machinery and other vehicles; the disaster resistance and life span of bridges, dams and other large structures. [0003] Therefore, vibration measurement and analysis has become one of the most commonly used and effective basic test methods, and it is the basic technical means and necessary knowledge that engineers, technicians a...

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Problems solved by technology

[0004] However, in a complex hoisting environment, cranes are prone to vibration problems such as boom jitter, slewing jitter, and luffing jitter, and resonance will occur in severe cases

Due to resonance, it will cause premature fatigue of components and systems, resulting in shortened life, and even engineering safety problems.

[0005] At present, when dealing with the problem of component fatigue damage due to crane vibration, the traditional processing method adopted has poor accuracy and low reliability, cannot be popularized and applied, and cannot conduct a comprehensive analysis of the root cause of the failure

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