A chain drive type seedling planting mechanism

Abstract

The invention provides a chain transmission type stock planting mechanism. The chain transmission type stock planting mechanism comprises a telescopic rotating arm support, a chain transmission device and a stock planting device. The telescopic rotating arm support can adjust the length by itself, when different planting distances are changed in stock planting, it is ensured that the planting movable track of the stock planting device is similar to a swing line, the upright degree of planting is improved, and the walking route of a duck nozzle in soil is shortened; chain transmission is adopted in the stock planting mechanism so that mass is low compared with gear transmission, and cost is low. According to a chain tensioning device which is designed with a specific length, power transmission of a rotating arm in different lengths can be achieved under the premise that different types of transmission chains do not need to be replaced.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and specifically refers to a seedling planting mechanism with a telescopic function driven by a chain. Background technique [0002] With the increasing requirements of crop transplanting mechanization, various transplanting machines have been widely used. Existing transplanting machines are mainly divided into hanging cup type, seedling guide tube type, clamp type, flexible disc type and so on. [0003] Such as figure 1 As shown, let Vt be the forward speed of the machine, R be the length from the end of the cantilever to the center of rotation of the cantilever, ω be the circumferential speed of the cantilever rotation, λ be the introduced design parameter, and the value is λ=(R*ω) / Vt. When the moving track of the planting mechanism is a cycloid (λ=1) or a trochoid (λ>1), in theory the vertical seedling drop can be realized by controlling the position of the seedling drop, that is, the mo...

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Problems solved by technology

However, when switching between different plant spacings, after Vt and ω are changed accordingly, if the R parameter is not changed, it is difficult to ensure that λ is approximately 1, and it is also difficult to ensure a better planting effect

[0004] The patent with the domestic publication number of CN102498807A discloses a planetary wheel cantilever type seedling planting mechanism. The seedling planting mechanism adopts a planetary wheel type transmission. The length (that is, the parameter R) is difficult to change, and it is difficult to ensure that the walking track of the duckbill is an approximate cycloid, which makes the walking path of the duckbill in the soil longer, the force between the duckbill and the soil increases, and the planting effect is not ideal

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