The invention discloses a hub unit, which comprises a hub body, a shaft sleeve is arranged in the hub body, a first rolling bearing and a second rolling bearing are installed between the shaft sleeve and the hub body, the first rolling bearing is located inside, and the second rolling bearing is located outside. A main oil seal and an intermediate oil seal are arranged between the hub body and the corresponding sealing surface of the shaft sleeve. The main oil seal is located in the inner side and the intermediate oil seal is located between the first rolling bearing and the second rolling bearing. The sealing area between the main oil seal and the intermediate oil seal is the lipid storage chamber. The first rolling bearing is located in the lipid storage chamber, the outer sealing area of the intermediate oil seal is the oil storage chamber, and the second rolling bearing is located in the oil storage chamber. The inner cavity of the hub unit is divided into an oil storage cavity and a grease storage cavity. The oil storage cavity and the grease storage cavity are independent of each other, so that the hub unit not only has the advantages of good lubrication performance of oil lubrication and convenient replacement, but also has the advantages of grease lubrication not easy to leak oil. At the same time, the double oil seal improves the reliability of the dynamic seal of the hub unit.
【技术实现步骤摘要】
轮毂单元
本专利技术涉及一种轮毂单元,尤其涉及一种用于卡车、客车等商用车的轮毂单元。
技术介绍
现有技术中,轮毂单元分有油润滑和脂润滑两种润滑方式,但无论哪种润滑方式,为达到润滑效果都需要用到动密封结构保证内腔密封性,使润滑介质不泄露。但在高速、重载或冲击载荷作用下,轴承的摩擦以及来自制动器件传递过来的热量会使轮毂单元内温度压力升高,当轮毂单元内温度升高,使得轮毂单元内腔的气压升高,从而使动密封的油封唇口承受较大压力,并出现较大幅度非正常变形,降低油封的动密封效果,久而久之会导致轮毂单元漏油。为了解决这一问题,传统的做法是采用增强油封耐压力来防止漏油,而这种方法的效果并不理想。在中国专利技术专利CN105065676A中公开了一种轮毂单元,这种轮毂单元采用了轮毂本体、轴套以及轴承,轮毂本体的密封面与轴套的密封面之间设有第一密封圈和第二密封圈;沿轴线方向,轮毂本体的密封面、轴套密封面、第一密封圈和第二密封圈形成储油腔。使用这种轮毂单元,仅通过单纯的两道密封圈对轮毂单元进行动密封,其密封效果并不理想,仍然存在漏油问题。
技术实现思路
为克服现有技术中的上述缺陷,本专利技术 ...
【技术保护点】
1.一种轮毂单元,包括:轮毂本体,所述轮毂本体内设置有轴套,所述轴套与所述轮毂本体之间安装有第一滚动轴承和第二滚动轴承,所述第一滚动轴承位于内侧,所述第二滚动轴承位于外侧;其特征在于,所述轮毂本体与所述轴套的相应密封面之间设置有主油封和中间油封,所述主油封位于内侧,所述中间油封位于所述第一滚动轴承与所述第二滚动轴承之间;所述主油封与所述中间油封之间的密封区域为储脂腔,所述第一滚动轴承位于所述储脂腔内,所述中间油封外侧的密封区域为储油腔,所述第二滚动轴承位于所述储油腔内。
【技术特征摘要】
1.一种轮毂单元,包括:轮毂本体,所述轮毂本体内设置有轴套,所述轴套与所述轮毂本体之间安装有第一滚动轴承和第二滚动轴承,所述第一滚动轴承位于内侧,所述第二滚动轴承位于外侧;其特征在于,所述轮毂本体与所述轴套的相应密封面之间设置有主油封和中间油封,所述主油封位于内侧,所述中间油封位于所述第一滚动轴承与所述第二滚动轴承之间;所述主油封与所述中间油封之间的密封区域为储脂腔,所述第一滚动轴承位于所述储脂腔内,所述中间油封外侧的密封区域为储油腔,所述第二滚动轴承位于所述储油腔内。2.按照权利要求1...
【专利技术属性】
技术研发人员:高世阳,马常伟,岳中政,朱世英,张春龙,
申请(专利权)人:山东浩信浩德精密机械有限公司,
类型:发明
国别省市:山东,37
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