A system and method for detecting low-temperature fatigue life of shelf beam-column joints for cold storage

Abstract

The present invention relates to the detection device field, especially to a shelf beam column node low-temperature fatigue life system and method for detecting a cold storage. The system comprises a fixed device, a cycle loading device, a cooling device and a connection device. The cooling device is configured to provide a low-temperature environment for a shelf beam column node testing piece for the cold storage to be detected. The cycle loading device is configured to apply and download the low-frequency cycle work load for the shelf beam column node testing piece for the cold storage to be detected to take the designed length of the crack or the corresponding number of the cycle loading times when the cracking is broken as the low-temperature figure service life of the shelf beam column node testing piece for the cold storage. The shelf beam column node low-temperature fatigue life system and method for detecting the cold storage are simple in structure, effectively avoid the damaging of the shelf for the cold storage in the usage process and avoid the property loss; the cooling device simulates the environment of the cold storage, and the cycle loading device simulates the bearing condition of the shelf for the cold storage to obtain the deformation condition of the shelf for the cold storage in a short time so as to effectively improve the development of the shelf technology for the cold storage.

Description

Technical field [0001] The invention relates to the field of detection equipment, in particular to a system and method for detecting low-temperature fatigue life of a beam-column node of a shelf for a cold storage. Background technique [0002] With the development of society and economy, people pay more and more attention to food insurance and cold storage, so the storage of items in cold chain logistics is more important, so the research on shelf structure in low temperature environment is particularly important. [0003] Under the action of cargo loading and unloading, especially for structural parts with obvious stress concentration phenomena such as beam-column joints, when the load is far less than the ultimate load, or even below the yield point, fatigue failure will occur, and fatigue failure occurs. Before the damage, the structural members have no warning, the damage is sudden, and it is difficult to take effective measures to prevent it. The damage is serious and the los...

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Problems solved by technology

[0003] Under the action of cargo loading and unloading, especially for structural parts with obvious stress concentration phenomena such as beam-column joints, when the load is far less than the ultimate load, or even lower than the yield point, fatigue damage will also occur, and in fatigue Before the failure, there is no warning for the structural components, the failure is sudden, and it is difficult to take effective measures to prevent it. Economic loss, so a system and method for testing the low-temperature fatigue life of beam-column joints of cold storage shelves is needed, so as to effectively avoid the damage of cold storage shelves under loading and unloading loads and prolong the service life

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