Bearing spiral combined sealing structure of high-speed roller bit
A roller cone bit and combined sealing technology, which is applied in construction and other directions, can solve problems such as wear, poor sand discharge performance, and low reliability, and achieve the effects of saving space, improving sealing performance, and high reliability
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[0011] The present invention will be further described below in conjunction with drawings and embodiments.
[0012] like figure 1 As shown, a high-speed roller cone bit bearing spiral combined sealing structure is composed of a roller cone (2), a bearing (5), a spiral sealing ring (6) and an O-shaped rubber ring (7). The spiral combined sealing structure is installed in the sealing cavity between the bearing (5) and the cone (2).
[0013] like figure 2 As shown, the inner hole of the cone (2) is processed with a spiral groove for installing the spiral sealing ring (6); the O-shaped rubber ring (7) is installed in the groove of the bearing (5) through interference fit , so that it is tightly hooped on the bearing and located on the top of the spiral sealing ring (6).
[0014] With reference figure 1 , when this seal is applied in the field, the tooth claw (1) and the cone (2) are respectively socketed on the bearing (5) through the inner hole of the cone, and the steel bal...
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