Two-degree-of-freedom wheel system rice pot seedlings transplanting mechanism with wide and narrow rows

Abstract

The invention discloses a wide-narrow row spacing transplanting mechanism with a two-degree-of-freedom gear train for a pot seedling of paddy rice. The problems that a transverse offset is too big during seedling taking so that insufficient accuracy of the seedling taking is caused exist in an existing wide-narrow row spacing transplanting mechanism with a single-degree-of-freedom planetary gear train for the pot seedling. In the wide-narrow row spacing transplanting mechanism with the two-degree-of-freedom gear train for the pot seedling of the paddy rice, a form of combining gear transmission with chain transmission is adopted in a transmission case of the two-degree-of-freedom gear train; the gear combination of non-circular gears and staggered helical gears is adopted in a gear box; because of two power inputs of the two-degree-of-freedom gear train, the mechanism is enabled to be capable of realizing a transmission ratio which is changed freely by combining the variable-speed transmission characteristics of the non-circular gears; thus, a complicated transplantation trajectory is realized; the trajectory is one straight line during the seedling taking; the transverse offset does not exist; the accurate seedling taking can be realized; the success rate of the seedling taking is guaranteed. A spatial deviation of the wide-narrow row spacing transplanting mechanism with the two-degree-of-freedom gear train for the pot seedling of the paddy rice is mainly realized by the helical gears which are mounted in a staggering manner; the wide-narrow row spacing transplanting mechanism with the two-degree-of-freedom gear train for the pot seedling of the paddy rice is simpler than a spatial bevel gear of an existing mechanism; meanwhile, direct seedling taking is realized in the condition that the wide-narrow row spacing transplantation is guaranteed.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and relates to a high-speed pot seedling wide and narrow row transplanting machine, in particular to a two-degree-of-freedom wheel system rice pot seedling wide and narrow row transplanting mechanism. Background technique [0002] At present, there are various types of rice transplanters, but whether it is transplanting in wide and narrow rows or transplanting in equal rows, the seedlings taken by the transplanting mechanism are all blanket-shaped seedlings, which are easy to damage the roots. The seedlings taken by the pot seedling wide and narrow row transplanting mechanism are pot seedlings, and there is no root packing phenomenon between the pots and pots, so there is no problem of root damage during the seedling picking process. Compared with blanket seedlings, transplanting has a shorter This is of great significance for increasing rice yield. [0003] Wide and narrow row planting of ...

AI Technical Summary

Problems solved by technology

The patent application with publication number TN102640604M discloses a high-speed rice transplanter non-circular gear wide and narrow row transplanting mechanism. The law of motion satisfies the seedling picking, transplanting trajectory and posture of the transplanting mechanism needle to a certain extent, but its function is limited to the "kidney-shaped" trajectory or "dolphin-shaped" trajectory of the rice transplanter, and cannot form a pot seedling transplanting place. The required "8-shaped" space complex trajectory, that is, the mechanism proposed in this patent can only be applied to rice transplanters, and cannot meet the requirements of transplanting rice pot seedlings in wide and narrow rows

[0005] Publication number is that the patent of CN103004346A discloses a kind of non-conical gear pot seedling wide and narrow row transplanting mechanism. In the process of picking seedlings, the clip clamps the potting soil of the pot seedlings; the transplanting track of this mechanism is a space movement track with a sharp beak, and there will be a large impact vibration during high-speed operation, and the reliability is not high

[0006] The patent application with the application number CN201310318352.7 discloses a seven non-conical bevel gear planetary gear system seedling wide and narrow rows transplanting mechanism, the core component of the mechanism is a seven non-conical bevel gear planetary gear system, and its seedling claws can be Realize the "figure 8" spatial movement track, but the "figure 8" transplanting track of this mechanism has a large lateral offset in the seedling picking section, that is, the movement of the seedling claws while picking seedlings is laterally offset. It interferes with the left and right seedling feeding actions of the seedling box, resulting in inaccurate seedling picking and a low success rate of seedling picking

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