Planetary gear transmission device based on conjugate curve herringbone gear

Abstract

The invention relates to a planetary gear transmission device based on a conjugate curve herringbone gear, and belongs to the technical field of gear transmission. The planetary gear transmission device comprises a sun gear, a planet gear, a planet carrier and an inner gear ring. The sun gear and the planet gear are driven by the conjugate curve herringbone gear to form a sun gear and planet gear engagement pair, and contact curves formed by tooth surface engagement points are conjugate curves. The planet gear and the inner gear ring are driven by the conjugate curve herringbone gear to form a planet gear and inner gear ring engagement pair, and contact curves formed by tooth surface engagement points are conjugate curves. According to the planetary gear transmission device based on the conjugate curve herringbone gear, few-tooth large-modulus optimization design can be carried out, the whole machine weight is effectively reduced, and the requirement for low weight is met; the bearing capacity is high, no axial force influence exists in the gear surface engagement process, relative gear surface sliding is reduced through point contact engagement, the transmission efficiency is effectively improved, and the whole machine service life is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of gear transmission, and relates to a planetary gear transmission device based on a conjugate curve herringbone gear. Background technique [0002] Involute planetary gear transmission is a form of gear transmission in which at least one gear moves circularly around a fixed geometric axis. This transmission usually uses internal meshing and uses several planetary gears to transmit loads at the same time to split power. . The involute planetary gear transmission has the following advantages: large transmission ratio range, compact structure, small volume and mass, high efficiency, low noise and stable operation, etc., so it is widely used in lifting, metallurgy, engineering machinery, transportation, aviation , machine tools, electrical machinery and national defense industries as deceleration, variable speed or speed increase gear transmission mechanism. [0003] At present, the herringbone planetary tran...

AI Technical Summary

Problems solved by technology

Usually, the main tooth profile form of herringbone gear is involute tooth profile. Although it is widely used, there are still the following problems: There is a large slip, which affects the transmission efficiency and service life; the bending strength of the involute gear teeth usually allows an overload of 1.5 to 2 times, and cannot meet the overload requirements of 5 times or higher; the contact form of the tooth profile is convex-convex contact, contact limited strength

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