Eccentric shaft-connecting rod combined type load averaging method and speed reducer adopted in method

Abstract

The invention discloses an eccentric shaft-connecting rod combined type load averaging method and a speed reducer adopted in the method. The method and the speed reducer are characterized in that a whole high-speed shaft is a herringbone gear shaft, planet gears are herringbone gears overall, an annular gear A and an annular gear B are both oblique-tooth annular gears, particularly, a herringbone gear transmission system comprises an automatic load averaging structure and can conduct automatic adjustment when multiple planet gear loads are unequal, the automatic load averaging structure is composed of a planet shaft, a needle bearing, a load averaging connecting rod and a round load averaging ring, the planet shaft is an eccentric shaft, the eccentric distance is specially designed for the situation that the loads among the planet gears are unequal due to manufacture and installation errors of a compensation system, the center distance between each planet gear and a sun gear and the center distance between each planet gear and the corresponding annular gear are not constant and can be changed slightly due to the eccentric distance, and the loads among the planet gears are adjusted and redistributed so as to be equal. The method and the speed reducer have the advantages that the load averaging effect of the system is greatly improved, vibration and noise are lowered, reliability is high, and the application prospects are wide.

Description

technical field [0001] The invention relates to the field of mechanical transmission, in particular to an eccentric shaft-connecting rod combined load sharing method and a reducer thereof. Background technique [0002] Power splitting is one of the characteristics of planetary gear transmission, which can be maximized under the condition of balanced load distribution among planetary gears. The uneven load distribution in the planetary gear transmission system is more serious. Sometimes the load may be concentrated on a certain planetary gear, while the other planetary gears are idle and cannot play the role of power transmission. This is also the abnormality of some planetary gear reducers. or cause of failure. For example, when the reducer is running, it generates vibration and noise, pitting corrosion on the gear teeth, even broken gear teeth, heat generation in the gearbox, damage to the bearings, etc., thereby shortening its service life. Therefore, in the design of pl...

AI Technical Summary

Problems solved by technology

The third is the error caused by inertia force, friction force, etc.

These errors will affect the load distribution between the planets and the uniformity of the load distribution along the meshing width

[0004] Herringbone planetary transmission has many advantages, combining the advantages of planetary transmission and herringbone gear transmission, such as small size of the transmission device, strong bearing capacity, no axial force, etc., but the assembly of the herringbone gear is difficult, and the herringbone planetary The three major components in the transmission are all integral parts and cannot be assembled. If they are disassembled and assembled, large installation errors will be introduced, which will seriously affect the uniformity of load distribution on each planetary gear and the transmission accuracy of the system.

[0005] In order to solve the technical defect of uneven load distribution on each planetary gear in the existing herringbone planetary reducer, the present invention proposes an eccentric shaft-connecting rod combined load equalization method and its reducer, which has a good load equalization effect, Low vibration and noise, strong bearing capacity, reliable operation, can not only meet the actual needs of aerospace and other extreme working conditions, fill the gaps in related technologies, but also produce greater social and economic benefits

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