| 摘要 |
The present invention relates to a portal housing (1) of a vehicle portal axle, which includes a driving gear (2) and a driven gear (3), two side walls (8, 9) which has a portal driving part provided with one or more middle gears in some cases in the middle thereof, and an oil pan (4) in the lower region of the portal housing (1). At this time, the driven gear (3) is connected, fixed, and rotated together with the driven shaft (5) extending coaxially from the axis of rotation of the driven gear (3). The driven shaft extends through the coaxial opening (6) of the hub carrier (7) which is connected, fixed, and rotated with one side wall (8). A driven gear (3) is rotatably supported on a portal housing (1) through the driven gear support part (11, 12). At least the inner wall (17, 20) of one side wall of the side walls (8, 9) comprises a flat surface which is at least extensively formed without protruding bulges from its surface, and a lubricating gap (23) with approximately the same width is formed between the surface of the inner wall (17, 20) of the side wall (8, 9) without bulges and the end face of the driving gear (2), the driven gear (3), and in some cases the middle gears (21, 21′, 22, 22′). |
