Dynamic test detecting platform for metal structure of crane

Abstract

The invention provides a dynamic test detecting platform for a metal structure of a crane, comprising a vibrating system, an excitation system, a data collecting and analyzing system and a track. By using the dynamic test detecting platform for the metal structure of the crane, various loads of the crane in a working or non-working state, like a seismic load, body shaking of a floating crane, cart emergency brake, a collision load of a cart buffer, road spectra, a hoisting load, a cargo deflection load, sudden rising of cargo, falling of a lifting appliance or cargo unloading, a periodic fatigue load and a combination of the loads, can be simulated; dynamic response signals of a crane test piece, such as data of a stress, strain, a displacement, an acceleration and the like, can be collected, processed and displayed to detect the state of the crane test piece; and the dynamic test detecting platform is suitable for dynamic experiment detection of the whole crane or the metal structural part.

Description

technical field [0001] The invention relates to a metal structure dynamic test and detection platform, in particular to a crane metal structure dynamic test and detection platform. Background technique [0002] Cranes are often subjected to various dynamic loads under various complex working conditions, such as the impact load on the structure caused by sudden lifting and unloading of the hoisting weight, the impact on the structure caused by the braking of the mechanism, the structural resonance of the rail machinery, and the wind load. Flutter and seismic loads, etc., these loads are often variable and uncertain. Due to the randomness of loads caused by changing working conditions, the randomness of material properties, the complexity of structural boundary conditions and damping factors, the random vibration of large structures under random excitation often causes local buckling and instability, Fatigue cracks propagate and cause large dynamic stresses, leading to overal...

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Problems solved by technology

Defects in the design are usually qualitatively fed back to the designer from the actual operation results. Due to the lack of rigorous theoretical analysis and calculation and the inspection of measured data, the subsequent modification of the design is often a partial modification, and the basis for modifying the design is not sufficient, resulting in similar products. The generational evolution of

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