Impact energy-absorbing device of partition board sleeve-type tandem connection porous solid element

Abstract

The invention discloses an impact energy-absorbing device of a partition board sleeve-type tandem connection porous solid element, which comprises a porous solid element, wherein a sleeve with a cylinder type structure is mounted inside the porous solid element, one end of the sleeve protrudes out of the porous solid element, the other end of the sleeve is submerged in the porous solid element, a partition board is sleeved on one end of the sleeve, which protrudes out, and the porous solid element, the sleeve and the partition board form the porous solid element components; at least two porous solid element components are connected in an end to end manner, and a guide rod is inserted into the sleeve; one end of the guide rod is in rigid connection with a blind hole end plate, the other end of the guide rod penetrates through a through hole end plate, and a pretensioning piece is mounted at the tail part of the guide rod; when the blind hole end plate receives an impact source and the blind hole end plate extrudes the porous solid element, the guide rod is driven to slide inside the sleeve, and meanwhile, the sleeve is driven to slide inside the porous solid element. The impact energy-absorbing device has the advantages as follows: the structure is simple and reasonable, the manufacturing, the mounting and the replacement are easy, the impacting and energy-absorbing capacity is high,and the work is stable and reliable and the effect is good.

Description

Technical field [0001] The invention relates to an impact energy absorption device of a partition sleeve type series porous solid element. Background technique [0002] Single-piece porous solid elements are widely used in energy absorbing devices. Because of their stable platform force and considerable peak-to-average ratio, they are widely used in automotive, aerospace, packaging engineering and other fields. Take the aluminum honeycomb element as an example, it has the excellent characteristics of light structure, high rigidity, and high specific energy absorption, making it one of the preferred elements for collision energy absorption devices. Current honeycomb energy absorbing devices generally use a single piece of honeycomb core material or a combination of thin-walled metal shells. Its shortcomings: For rail trains and urban rail vehicles, it is difficult to rely on a single honeycomb element to achieve effective absorption of huge impact kinetic energy. In other words:...

AI Technical Summary

Problems solved by technology

Its disadvantages: For rail trains and urban rail vehicles, it is difficult to rely on a single honeycomb element to effectively absorb huge impact kinetic energy

In other words: single-piece long honeycomb elements or simple series honeycomb elements are prone to instability, while single-piece short honeycomb elements have limited energy absorption, so there is a gap between the energy absorption of a single honeycomb element and the actual demand

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