High-speed transplanter feeding and taking seedling link gear system

Abstract

The invention relates to a seedling feeding and fetching interlocking mechanism system for a high speed seedling transplanting machine, which belongs to the technology field of the seedling transplanting machine. The system comprises a seedling feeding mechanism, a seedling fetching mechanism and a transmission mechanic, wherein the transmission mechanism comprises a gear box connected with the seedling feeding mechanism and the seedling fetching mechanism, and a first output shaft, a second output shaft, a third output shaft and an input shaft are all arranged on the gear box; the middle part of the first output shaft, and the input shaft form a first kinematic pair, and the both ends thereof and the seedling fetching mechanism form a second kinematic pair; one end of the third output shaft, and the seedling feeding mechanism form a third kinematic pair; a first eccentric gear is arranged on the first output shaft, a second eccentric gear meshed with the first eccentric gear, and a first circular gear are arranged on the second output shaft, and a second circular gear meshed with the first circular gear is arranged on the third output shaft. The system can effectively reduce the speed of relative movement and the position error between the seedling feeding mechanism and the seedling fetching mechanism through speed changing seedling feeding and speed reducing seedling fetching, and thereby the quality and the precision for seedling fetching can be improved.

Description

technical field [0001] The invention relates to a linkage mechanism system formed by connecting a seedling sending mechanism, a seedling picking mechanism and a transmission mechanism on a high-speed rice transplanter, especially a linkage mechanism system capable of completing variable-speed seedling delivery and slow-speed seedling picking, belonging to rice transplanters technology field. Background technique [0002] The situation of sending seedlings and taking seedlings of the existing rice transplanter is as follows: 1. When the seedling sending frame of the seedling sending mechanism is periodically horizontally reciprocated (swinged) to the positions of both ends, the toggle mechanism of the seedling sending mechanism is placed on the seedling sending frame The pre-cultivated seedling block on the top moves down to complete the seedling delivery; 2. The seedling-taking needle of the seedling-taking mechanism near the bottom of the seedling-feeding frame rotates vert...

AI Technical Summary

Problems solved by technology

[0003] According to the applicant's understanding: 1. In existing rice transplanters, especially high-speed rice transplanters, the relatively high-speed rotation and swing of the seedling-taking needle and the seedling-feeding frame easily cause the tearing of the seedlings in the horizontal direction of the seedlings and destroy the shape of the cut seedling blocks.

2. The transmission mechanism of the existing rice transplanter provides uniform swing and rotation for the seedling delivery mechanism and the seedling removal mechanism through pairs of meshing circular gears, that is, the horizontal swing of the seedling delivery frame and the vertical rotation of the seedling removal needle are both uniform motions ; and the speed of the horizontal swing of the seedling delivery frame and the vertical rotation of the seedling-taking needle produced by the shifting mechanism provided on some rice transplanters at the same gear position is still constant at a constant speed, that is, it cannot be rotated between the swing of the seedling delivery frame and the rotation of the seedling-taking needle. The result of this relatively uniform motion is that as the relative continuous swing of the seedling delivery frame and the uniform rotation of the seedling retrieval needle, the relative movement between the seedling retrieval needle and the seedling delivery frame (especially the seedling delivery door) The position error of the movement will continue to accumulate and increase, especially for high-speed rice transplanters. After working for a long time, this relative movement position error will not only affect the consistency of the shape of the cut seedling block (decrease in precision), but even lead to cutting of the seedling block. It is difficult to meet the precision requirements of high-speed mechanized planting of super rice

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