Planetary reduction gear, drive axle assembly and vehicle

Abstract

The invention discloses a planetary reduction gear, a drive axle assembly and a vehicle. The planetary reduction gear comprises a shell, a gear ring, a planet wheel assembly, a planet carrier, a planet wheel axle and an oil guide piece; an oil pool for containing lubricating oil is formed in the shell, the gear ring is fixedly connected with the shell, the planet wheel assembly is meshed and matched with the gear ring, the planet wheel axle is arranged on the planet carrier, the planet wheel assembly sleeves on the planet wheel axle, a bearing is arranged between the planet wheel assembly andthe planet wheel axle, and an oil guide flow path is arranged in the planet wheel axle; an oil inlet and an oil outlet communicating with the oil guide flow path are formed in the planet wheel axle, the oil guide piece is connected with the planet carrier so as to be driven by the planet carrier to rotate, a part of the oil guide piece is located in the oil pool, the oil guide piece is constructedto guide the lubricating oil in the oil pool to the oil inlet during rotation, and the lubricating oil in the oil guide flow path enters the bearing through the oil outlet. According to the planetaryreduction gear, the oil guide piece is arranged on the planet carrier, so that the lubricating efficiency and the lubricating effect of the planetary reduction gear are greatly improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a planetary speed reduction device, a drive axle assembly and a vehicle. Background technique [0002] In the related art, the planetary reduction gear in the gearbox is provided with an oil guide flow path for circulating lubricating oil. However, the oil guide flow is formed by the combination of oil guide holes on multiple components in the planetary reduction gear, which makes the arrangement of the oil guide flow path more complicated, which not only increases the difficulty of assembling the planetary gear reducer, but also The extended path of the oil guide flow path is long, and the flow resistance of the lubricating oil in the oil guide flow path is relatively large, which is prone to insufficient lubrication, thereby affecting the normal operation of the planetary reduction gear. Contents of the invention [0003] The present invention aims to solve at least one of ...

AI Technical Summary

Problems solved by technology

However, the oil guide flow is formed by the combination of oil guide holes on multiple components in the planetary reduction gear, which makes the arrangement of the oil guide flow path more complicated, which not only increases the difficulty of assembling the planetary gear reducer, but also The extension path of the oil guide flow path is long, and the flow resistance of the lubricating oil in the oil guide flow path is relatively large, which is prone to insufficient lubrication, which affects the normal operation of the planetary reduction gear.

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