Composite support sleeve of turning shaft for truck cab

The utility model relates to a composite support sleeve of turning shaft for truck cab during the operation of an automobile, belonging to the technical field of a rubber shock absorption piece for the automobile. A tubular nylon inner sleeve, a tubular inner ironware, an inner rubber body, a heterotype plastic inner lining and an outer rubber body are successively arranged from inner to outer; the lateral sections of the tubular nylon inner sleeve and the tubular inner ironware are both in a circular ring shape; the lateral section of the heterotype plastic inner lining is composed of a circular ring shape and an oblong shape tangent with the circular ring shape; the center of the heterotype plastic inner lining forms an eccentric structure with the centers of the tubular inner ironware and the tubular nylon inner sleeve. The utility model has the advantages of light weight, simple technique, fine effect of shock absorption and silencing, fine rigidity, abrasion resistance and flexibility of a whole, big bearing capacity and long service life. 本实用新型涉及一种汽车运行中或汽车驾驶室翻转轴用复合支撑套，属于汽车用橡胶减震件的技术领域。由内向外依次为管形尼龙内套、管形内铁件、内橡胶体、异型塑料内衬和外橡胶体。管形尼龙内套和管形内铁件的横截面均为圆环形，异型塑料内衬的横截面为圆环形和与其相切的长方形组成。异型塑料内衬的中心与管形内铁件和管形尼龙内套的中心为偏心结构。本实用新型具有重量轻、工艺简单、减震、消音效果优良、整体刚性、耐磨性、柔韧性好、承载力大、实用寿命长。