| 摘要 |
A planetary hydromotor comprises a casing (1) with a stator gear (2) and, mounted inside the casing, a shaft (3) with a gear (4), an annular rotor (11) mounted eccentrically in relation to the shaft (3) and two covers (5 and 6). The shaft (3) is provided with a packing which consists of a supporting ring (7) fixed in the cover (5) and a housing (8) with a cylindrical protrusion adjoining the working surface of the supporting ring (7), that housing (8) being mounted on the shaft (3). A ring (20) made of an elastic material is mounted on the external surface of the cylindrical protrusion of the housing (8). Channels (21) are made in the housing (8) under the ring (20) connecting apart of the internal surface of that ring (20) with the atmosphere. |
