A cellar puncher bit

CN224329935UActive Publication Date: 2026-06-09GUIYANG OFFICE OF GUIZHOU TOBACCO CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUIYANG OFFICE OF GUIZHOU TOBACCO CORP
Filing Date
2025-07-18
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional methods of creating planting pits do not meet agronomic requirements. Drilling tools are labor-intensive and inefficient, and it is difficult to flexibly adjust the depth of the pits, which affects the growth of tobacco seedlings and the efficiency of transplanting.

Method used

A well drilling bit was designed, comprising a cone and a cylinder, with lower and upper wheel grooves, equipped with a limiting mechanism and a support frame. The wheel grooves scrape the inner wall of the well to form a rough surface, which facilitates the growth of tobacco seedlings. The depth can be adjusted by a limiting ring and a connector to adapt to wells of different sizes.

Benefits of technology

It improved the quality of well-pit planting, enhanced the growing environment for tobacco seedlings, reduced labor intensity, increased transplanting efficiency, and ensured the uniformity of well-pit depth and the survival rate of tobacco seedlings.

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Abstract

This utility model relates to the field of tobacco seedling transplanting technology, and in particular to a well-hole drilling tool, comprising a drilling mechanism, which includes a cone and a column disposed on the cone; the cone is provided with a lower wheel groove, and the column is provided with an upper wheel groove; a support frame, the support frame and the drilling mechanism being rotatably connected. This utility model, through the setting of the lower and upper wheel grooves, can avoid the smooth inner wall of the well-hole after drilling, as the inner wall of the well-hole is rough and uneven after drilling, facilitating root growth of the tobacco seedlings.
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