The high-sealing self-adjusting sealing piece comprises a framework I, a framework II and a framework III, the framework I is arranged on a hub outer ring, the framework III is installed on the framework II, a roller path is formed between the hub outer ring and a flange plate, a cavity and a gap are formed in the outer side of the roller path, and the cavity is communicated with the cavity. The framework I, the framework II and the framework III are located in a cavity on the outer side of the roller path, the framework I is provided with outer wrapping rubber, the lower portion of the outer wrapping rubber is provided with a lip I, a lip II and a lip III, and the contact position of the framework III and the framework II is provided with water absorption expansion rubber. The invention has the following beneficial effects: through structure improvement, inlet openness is reduced, the labyrinth channel is arranged, the length of a muddy water invasion path is increased, the difficulty of external muddy water and dust invading a bearing raceway is increased, the risk that muddy water permeates into the raceway through a gap between the rotating skeleton and the flange plate is reduced, and the service life of the bearing raceway is prolonged. And the sealing performance is improved. And meanwhile, water-absorbing expansion rubber is arranged, so that the self-adjusting performance of the sealing performance is improved.
本发明涉及一种高密封自调节密封件及其轮毂轴承,包括骨架Ⅰ、骨架Ⅱ和骨架Ⅲ,骨架Ⅰ设置在轮毂外圈上,骨架Ⅲ安装在骨架Ⅱ上,轮毂外圈和法兰盘之间形成滚道,所述滚道外侧形成空腔和空隙,骨架Ⅰ、骨架Ⅱ和骨架Ⅲ位于滚道外侧空腔,骨架Ⅰ上设有外包橡胶,外包橡胶的下部设有唇口Ⅰ、唇口Ⅱ和唇口Ⅲ,骨架Ⅲ与骨架Ⅱ的接触处设有吸水膨胀橡胶。本发明有益的效果是:本发明通过结构改进,减小了入口开放性,设置了迷宫式通道,增长了泥水侵入的路径长度,进而增加了外界泥水灰尘入侵轴承滚道的难度,减小了由于泥水通过转动骨架与法兰盘的间的空隙渗入滚道的风险,提高了密封性能。同时设置吸水膨胀橡胶,来增加密封性能的自调节性。
High-sealing self-adjusting sealing element and hub bearing thereof
一种高密封自调节密封件及其轮毂轴承
2022-04-15
Patent
Electronic Resource
Chinese
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