Planetary gear train seedling planting mechanism driven by two-stage elliptical bevel gears and design method of planetary gear train seedling planting mechanism

Abstract

The invention discloses a planetary gear train seedling planting mechanism driven by two-stage elliptical bevel gears and a design method of the planetary gear train seedling planting mechanism. Approximate dwelling time of a traditional rotary duckbilled seedling planting mechanism during seedling catching and seedling planting is not long enough. The planetary gear train seedling planting mechanism comprises a two-stage elliptical bevel gear pair, a center shaft and a planetary gear train seedling planting mechanism body. When the planetary gear train seedling planting mechanism in the initial installing position, a planetary frame is arranged horizontally, the two points of intersection of the spherical pitch curve of the driven two-stage elliptical bevel gear and the horizontal plane where the central axis of the center shaft is located are the two points with the smallest curvature on the spherical pitch curve of the driven two-stage elliptical bevel gear, and the point with the largest curvature on the spherical pitch curve of the driving two-stage elliptical bevel gear meshes with the point with the smallest curvature on the pitch curve of the driven gear. According to the planetary gear train seedling planting mechanism driven by the two-stage elliptical bevel gears and the design method of the planetary gear train seedling planting mechanism, the approximate dwelling time at the stages of seedling catching and seedling planting is prolonged on the basis that the duration of one motion period is not changed, and the success rate of seedling catching and seedling planting is increased.

Description

technical field [0001] The invention relates to a seedling planting mechanism of a transplanter in agricultural machinery, in particular to a planetary gear system seedling planting mechanism driven by a second-order elliptical bevel gear and a design method thereof. Background technique [0002] Transplanting is one of the important links in the vegetable production process. Transplanting has the comprehensive benefits of compensating the climate and advancing the growth, and can make full use of light and heat resources. The economic and social benefits it brings are very considerable. Due to the high cost of manual transplanting, realizing the mechanization of transplanting has become an urgent problem to be solved in my country's agricultural production. [0003] At present, the reciprocating duckbill type seedling planting mechanism driven by a multi-rod mechanism has a large external dimension, a compact structure, and a relatively large inertial force during operation...

AI Technical Summary

Problems solved by technology

Due to the high cost of manual transplanting, the mechanization of transplanting operations has become an urgent problem to be solved in my country's agricultural production

[0003] At present, the reciprocating duckbill seedling planting mechanism driven by a multi-rod mechanism has a large size, a compact structure, and a large inertial force during operation.

Clamp-type and chain-clamp transplanters are prone to missed planting when the planting mechanism is working, and the seedling clips are sometimes easy to damage the pot seedlings

The rotary duckbill seedling planting mechanism driven by the planetary gear train can solve the above problems, but the input speed of the traditional rotary duckbill seedling planting mechanism is constant, and the approximate pause time is not long enough during seedling picking and planting, which leads to easy occurrence of seedling picking and planting. Failed, not suitable for high-speed seedling planting

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