Combined incomplete eccentric circle - non-circular gear planetary gear train vegetable seedling picking mechanism

Abstract

The invention discloses a combined incompletely eccentrically circular and non-circular gear planetary train vegetable seedling pick-up mechanism. An existing pick-up mechanism gains a wide-range variation in a transmission ratio of a pick-up trajectory through a locking arc and has high transmission impact. In the mechanism, a center shaft and a planet carrier are fixed; a central incompletely eccentrically circular gear is fixed to a frame, a central incompletely non-circular gear is fixed to the central incompletely eccentrically circular gear, and both the two gears loosely sleeve the center shaft; a first middle non-circular gear is connected with a first middle shaft through splines, and a first middle incompletely non-circular gear is fixed to a first middle non-circular gear; a second middle non-circular gear is connected with a second middle shaft through splines, and a second middle incompletely non-circular gear is fixed to the second middle non-circular gear; a first planet non-circular gear is connected with a first planet shaft through splines, and a second planet non-circular gear is connected with a second planet shaft through splines; both one end of a first planet shaft and one end of the second planet shaft are fixed to a shell of a pick-up claw. This mechanism has stable transmission and low impact.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and relates to a vegetable seedling picking mechanism, in particular to a combined incomplete eccentric circle-noncircular gear planetary gear system vegetable seedling picking mechanism. Background technique [0002] Transplanting has the comprehensive benefits of early crop growth and climate compensation. It can make full use of light and heat resources, and its economic and social benefits are very considerable. Potted seedling transplanting operations in paddy fields and dry land require the development of transplanting and seedling picking mechanisms. [0003] The planetary gear train transmission mechanism has been used in the seedling picking mechanism of transplanting machinery. In order to complete the working process of picking seedlings-pushing seedlings-returning, the tip of the transplanting arm must complete the required motion trajectory. In the existing planetary gear The l...

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Problems solved by technology

[0003] The planetary gear train transmission mechanism has been used in the seedling picking mechanism of transplanting machinery. In order to complete the working process of picking seedlings-pushing seedlings-returning, the tip of the transplanting arm needs to complete the required trajectory. In the existing planetary gear The locking arc mechanism is used in the seedling picking mechanism to achieve the large-scale change of the transmission ratio required by the seedling picking track. The transmission ratio of the locking arc transmission is equivalent to infinity, so when the locking arc mechanism enters or leaves due A sudden change in the transmission ratio will produce a large impact, which is very unstable, which is not conducive to improving the speed of seedling picking

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