RV speed reducer

According to the RV speed reducer provided by the embodiment of the invention, the oil injection hole is formed in the planet carrier, the through oil through hole is vertically formed in the roller pin, and the centrifugal hole communicated with the oil through hole is transversely formed in the roller pin, so that a lubricating channel is formed, and lubricating oil can slide out of the oil injection hole and then fall into the oil through hole; and finally, the lubricating oil flows to the outer side of the roller pin from the centrifugal holes under the centrifugal effect, so that the meshing position of the roller pin and the cycloidal gear is lubricated. The lubricating structure is simple in design and easy to achieve, lubricating oil flows to the outer side of the roller pin through the centrifugal holes under the centrifugal acting force to lubricate the tooth shape of the cycloidal gear, the problem that the small-area meshing position between the roller pin and the cycloidal gear is not fully lubri