Two-degree-of-freedom unequal-speed gear train transplanting mechanism and method

Abstract

The invention discloses a two-degree-of-freedom unequal-speed gear train transplanting mechanism and method, and belongs to the field of agricultural machinery. The mechanism comprises a planet carrier, a non-circular internal gear and a non-circular planet gear, wherein the planet carrier and the non-circular internal gear rotate differentially in the same direction at a rotating speed n1 and a rotating speed n2 respectively, the non-circular planet gear is hinged to the planet carrier, and the non-circular planet gear meshes with the non-circular internal gear. A planting arm is fixedly connected to the non-circular planet gear, on one hand, the planting arm does epicyclic motion along with the planet carrier, on the other hand, the planting arm rotates at a different speed relative to the planet carrier through meshing of the non-circular planet gear and the non-circular internal gear, two motions are combined into a track and a pose required by rice transplanting of the planting arm, a plurality of planting arms can be configured as required, a structure is compact, transmission is stable, a seedling damage rate is reduced, transplanting accuracy is improved, and the two-degree-of-freedom unequal-speed gear train transplanting mechanism can realize rice blanket seedling transplanting and rice pot seedling transplanting tracks and poses through optimization design, and alsocan realize commercial crop transplanting tracks and poses through parameter optimization by replacing the transplanting arm with a transplanter.

Description

technical field [0001] The invention belongs to the field of agricultural machinery. In particular, it relates to a two-degree-of-freedom inconstant-velocity gear train transplanting mechanism and method. Background technique [0002] The transplanting of economic crops such as rice is an important link in the planting process. At present, rice transplanting machines mainly include rice transplanters, rice throwing machines and bowl seedling planting check-in machines. The rice transplanter adopts blanket-like seedlings, which have a long seedling slowing period and damage the roots; the rice seedling throwing machine is easy to cause the seedlings to fall, and the uprightness is not good; while the potted seedlings are planted with good uprightness and no slowing down period. [0003] The transplanting mechanism is the core working part of the transplanting machine, which completes the actions of taking seedlings, transporting and planting. Existing transplanting mechanis...

AI Technical Summary

Problems solved by technology

Existing transplanting mechanisms mostly use planar rod mechanisms or single-degree-of-freedom K-H-V non-circular gear planetary gear trains. The two-stage unequal speed transmission ratio restricts each other, and there is a problem of backlash accumulation, which makes it impossible to accurately realize the transplanting trajectory and posture

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