Seedling-planting tool for seedling transplanter

Abstract

The invention relates to a seed planting tool used for a seed transplanter. Based on the seed planting tool used for a present seed transplanter, a main space part in the interior of the seed planting tool is provided with a seed planting toolbox in which lubricating oil is stored, a seed pushing tool is provided with an axis part sliding in a bearing part in the seed planting toolbox, and a seedpushing part tightly fastened with the front end of the axis part outside of the seed planting toolbox, the position lower than the bearing part next to the seed planting toolbox is provided with an oil seal which is contacted with the peripheral surface of the axis part, the lubricating oil gradually intrudes into the clearance owing to the sliding of the axis part, the danger that the lubricating oil received by the oil seal can not flow to anywhere and then can leak to the exterior of the seed planting toolbox through the middle part of the oil seal and the axis part exists, and as the lubricating oil leaks outwards, the danger that farmlands on which seeds are planted can be polluted and the durability of the seed planting tool can be reduced owing to the deficiency of lubricating oilin the seed planting toolbox exists. A solution refers to that a hollow part is arranged between the oil seal and the bearing part, and a communication groove which is communicated from the hollow part to the main space part is also arranged.

Description

technical field [0001] The invention belongs to the technical field of seedling planting tools used in seedling planting devices such as seedling transplanting machines. Background technique [0002] The prior art has the seedling planting tools described in the following patent documents 1 (Japanese Unexamined Patent Publication No. 6-209623) and Patent Document 2 (Japanese Patent Laid-Open No. 8-23736). The blanket-shaped seedlings scrape off the planting claws of one seedling; the seedling pushing tool that pushes out the seedlings scraped off by the planting claws; The shaft part that slides on the bearing part in the seedling planting tool box; and the seedling pushing part that is fastened to the front end of the shaft part outside the seedling planting tool box, and the lower side of the bearing part is provided with the outer peripheral surface of the shaft part. oil seal. [0003] In the structure of the prior art mentioned above, when the shaft part of the seedl...

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Problems solved by technology

[0004] However, since the lubricating oil gradually invades the above-mentioned gap due to the sliding of the shaft portion, there is no place for the lubricating oil received by the oil seal, and the lubricating oil passes through the oil seal and the shaft portion There is a danger of leakage to the outside of the seedling planting tool box. Due to the leakage of lubricating oil, there is a risk of polluting the field where the seedlings are planted, and the durability of the seedling planting tool is reduced due to insufficient lubricating oil in the seedling planting tool box.

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