A composite planetary row structure suitable for high-speed working conditions

Abstract

The invention belongs to the technical field of mechanical transmission and particularly relates to a composite planet row structure adapting to a high-rotation-speed working condition. In order to prolong the service life of a composite planet row and meet the use requirements of the composite planet row, the composite planet row structure adapting to the high-rotation-speed working condition includes a planet carrier, planet wheel axles, planet wheels, a sun wheel, gear rings and needle bearings, wherein the planet wheel axles are installed on the planet carrier, and the planet wheels, the sun wheel, the gear rings and the needle bearings achieve transmitting revolving speed and torque. The planet wheels are composed of the planet wheel A and the planet wheel B; the planet wheel axles are composed of the planet wheel axle A and the planet wheel axle B; the gear rings are composed of the gear ring A and the gear ring B. In this way, unbalance loading of the two planet wheels is reduced through the composite planet row, loading of the needle bearings in the two planet wheels is equalized, the acting force exerted on needle bearing retainers due to torsion of all rollers is reduced, the friction force exerted on the rollers in the running process of the needle bearings is reduced, and the total capacity of roller pins of each planet wheel is increased.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a compound row structure suitable for high-speed working conditions. Background technique [0002] The planetary row is the basic component of the planetary transmission mechanism. Usually, a compound planetary row structure is used to reduce the axial size. In some tracked vehicles, the planetary wheel needle roller bearings were damaged at the early stage of the test, and the planetary wheels, planetary wheel shafts, and planetary wheel needle roller bearings were sintered. [0003] In view of the above situation, how to develop a composite planetary row structure that can adapt to high-speed working conditions and overcome damage and sintering is a very urgent direction and goal for those skilled in the art. [0004] In the later stage, through various individual test studies, it was found that optimizing the surface roughness of the needle roller ...

AI Technical Summary

Problems solved by technology

[0002] The planetary row is the basic component of the planetary transmission mechanism. Usually, a compound planetary row structure is used to reduce the axial size. In some tracked vehicles, the planetary wheel needle roller bearings were damaged at the early stage of the test, and the planetary wheels, planetary wheel shafts, and planetary wheel needle roller bearings were sintered.

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