Split planet carrier assembly facilitating positioning of planet wheel shaft

Abstract

The invention belongs to the technical field of mechanical transmission, and particularly relates to a split planet carrier assembly facilitating positioning of a planet wheel shaft. The assembly comprises a main planet carrier, an auxiliary planet carrier, a planet wheel, the planet wheel shaft, a needle bearing, a bearing spacer ring, an anti-wear pad and positioning steel balls. In order to ensure that an oil passage hole on the planet wheel shaft is aligned with an oil passage hole on the auxiliary planet carrier so that lubricating oil can smoothly enter an inner hole of the planet wheelshaft and provide lubrication for the needle bearing of the planet wheel, it must be ensured that the planet wheel shaft does not rotate circumferentially or move axially in the working process. According to the split planet carrier assembly facilitating positioning of the planet wheel shaft, the steel ball positioning type is adopted, the steel balls are arranged in the planet wheel shaft and themain planet carrier, and are matched with a cylindrical groove on the planet wheel shaft and a semi-cylindrical groove on the main planet carrier respectively, so that the planet wheel shaft can be positioned, the structure is simple and compact, the assembly and the repeated disassembly are easy, and the steel ball positioning type has higher reliability compared with the modes of fixing screw positioning, end face mortise punching and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a split-type planet carrier assembly which facilitates the positioning of the planet wheel shaft. Background technique [0002] Planetary transmission is widely used in mechanical transmission systems due to its compact structure, wide transmission ratio range, stable force transmission, and low noise. Due to the high rotational speed of the planetary wheel, the heat generated by the planetary wheel bearing is relatively large during operation. In order to ensure that the planetary wheel bearing is sufficiently lubricated, the planetary wheel bearing is generally forced to be lubricated in the form of an oil channel on the planet carrier and the planetary wheel shaft. In order to align the oil passage of the planet wheel shaft with the oil passage of the planet carrier, so that the lubricating oil can pass through the oil passage of the planet wheel sh...

AI Technical Summary

Problems solved by technology

The most widely used positioning methods for planetary gear shafts include set screw fixing and end face punching. The set screw fixing needs to be manually aligned with the axis of the screw hole during assembly, which is very inconvenient and difficult to disassemble, and its strength is not high. Set screws are easily cut off under severe working conditions

The end face punching method requires low hardness on the end face of the planetary wheel shaft, and the planetary wheel shaft is used as the inner raceway of the planetary wheel needle roller bearing, and requires a higher hardness on the cylindrical surface, so the heat treatment requirements for the planetary wheel shaft are high, and the reliability of the positioning method is not high.

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