優(yōu)點：適合轎運車使用,，安裝簡單,、操作方便，牽引銷采用球形鉸接的形式,，全掛車牽引桿通過前段半圓的結(jié)構完全扣在圓球上,，結(jié)構可靠穩(wěn)定，球型較接部分,，能夠更好的實現(xiàn)潤滑,，擺角更加自如，安全性好,。

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