Dual-seal device for bent axle and gearbox

The utility model relates to a dual-seal device for a bent axle and a gearbox. The dual-seal device comprises a framework. The cross section of the framework is of an annular shape. The inner wall of the framework is provided with a sealing lip which protrudes out of the inner wall of the framework. The concave surface of the outer wall of the framework is provided with a sealing ring groove. A sealing ring is arranged in the sealing ring groove. The convex surface of the outer wall of the framework is provided with mounting holes. The dual-seal device is simple in structure; the middle sealing lip is made of rubber, so that the seal of a motion shaft is guaranteed by utilizing the good conformability and elasticity of the rubber; the sealing ring made of rubber is adopted for an external static seal, elastic deformation of the rubber ring is utilized so that the sealing ring groove can be filled with the rubber ring, and the static seal is achieved by utilizing the space limit of the sealing ring groove. In