胀起后自动胀紧管芯。

Bulge the tube core automatically after swelling.

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胀紧力是关系其工作性能的最主要参数，也是设计这一部件的关键所在。

The distending force is the principal parameter related to its working property and is also where the key lies in designing this component.

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相同角度的斜面起着在固定套中相互胀紧，并具有互换性好，更换简单的作用。

The inclined surfaces with the same angle are used to expand mutually in the fixing sleeve. The utility model has the advantages of good interchangeability and simple replacement.

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