Breakable pin assembly that automatically retracts after the pin breaks

Abstract

The invention discloses a fracturable pin assembly capable of achieving automatically contracting after pin fracturing. The fracturable pin assembly comprises a first connecting part, a second connecting part, a fracturable pin and two disk springs; the two disk springs are arranged on the fracturable pin in a sleeving mode and located on the two sides of a preset fracture zone of the fracturable pin respectively, the two ends of the first disk spring make contact with the first end of the first connecting part and the first end of the fracturable pin respectively, the stress of the first disk spring has the trend of pushing the fracturable pin to the position far away from the first end of the first connecting part, the two ends of the second disk spring make contact with the second end of the second connecting part and the second end of the fracturable pin respectively, and the stress of the second disk spring has the trend of pushing the fracturable pin to the position far away from the first end of the second connecting part. According to the fracturable pin assembly, the two parts generated after pin fracturing contract into the first connecting part and the second connecting part respectively through the stress of the disk springs, the fracture faces contract into the inner sides of the end faces of the connecting parts, and then the purpose that contained objects are prevented from being damaged is achieved.

Description

technical field [0001] The invention relates to a breakable pin assembly, in particular to a breakable pin assembly which can shrink automatically after the pin breaks. Background technique [0002] Breakable pins are often used in overload protection devices for destructive overload protection machinery, electronics, large-scale or precision system equipment, etc., and use their mechanical breaking effect to protect the safety of important parts. The safety release technology often uses the breakable pin in the mechanical overload protection device for reference. However, after the pin is broken by force, the fracture is relatively sharp. During the interference process of friction and collision between the release mechanism and the content to be released, it is easy to cause the content to be broken. Scratches or even damage will lead to failure of the entire device or mechanism in severe cases. Contents of the invention [0003] The object of the present invention is t...

AI Technical Summary

Problems solved by technology

The safety release technology often uses the breakable pin in the mechanical overload protection device for reference. However, after the pin is broken by force, the fracture is relatively sharp. During the interference process of friction and collision between the release mechanism and the content to be released, it is easy to cause the content to be broken. Scratched or even damaged, it will lead to the failure of the entire device or mechanism in severe cases

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