Telescopic drill bit for collecting columnar soil samples and soil collection method

Abstract

The invention discloses a telescopic drill bit for collecting columnar soil samples and a soil collection method. Columnar soil sample collection can be realized, automatic blocking of the blocking piece can be realized and soil drop can be reduced. The telescopic drill bit comprises a hollow columnar shell with an opening in the bottom, blocking pieces for preventing soil from falling out is arranged in the shell, and the blocking pieces are rotationally arranged in the shell; shell is of a telescopic structure and comprises a fixed shell and a movable shell arranged in the fixed shell in a sleeved mode. The movable shell and the fixed shell are relatively telescopically connected; a plurality of blocking pieces are uniformly and circumferentially arranged along the side wall of the shell; one end of the blocking pieces is rotationally arranged on the side wall of the shell and rotates under the telescopic effect of the movable shell so that the other end of the blocking pieces is enabled to block in the middle of the shell; the soil collection method comprises the steps that soil enters the shell along the opening in the bottom of the shell, the shell generates driving force during telescopic movement, the blocking piece rotates under the action of the driving force, and when the blocking piece rotates downwards to be in an open state, the soil is blocked in the shell.

Description

technical field [0001] The invention relates to the technical field of soil collection equipment, in particular to a telescopic drill for collecting columnar soil samples and a soil collection method. Background technique [0002] The earth-borrower (soil-borrowing drill) is a commonly used soil collection tool for studying agricultural production, soil pollution control, animal and plant research, etc. It mainly includes a drill barrel 5, a drill bit 6 installed at the end of the drill barrel 5, a drill barrel 5 and a drill bit The push rod 7 of 6, the drill bit 6 is provided with a catch 1, and the catch 1 is fixed on one end of the push rod 7, wherein the drill bit is a columnar structure with a cavity in the middle and an open bottom end, and a through hole is set on the drill bit side wall, see figure 1 , when collecting soil, apply pressure on one end of the drill tube 5, and the drill tube 5 drives the drill bit 6 down into the soil layer under the action of manual th...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem in the prior art that the soil is easy to fall out of the drill bit, the amount of soil sample collection is greatly reduced, and the method of manually pulling the push rod to stop the soil from falling out is time-consuming and laborious, which affects the efficiency of soil sample collection. The present invention provides a A telescopic drill bit for columnar soil sample collection, which can realize soil columnar sample collection, and can realize the automatic blocking operation of the stopper, effectively reduce the amount of soil falling out, and improve the efficiency of soil sample collection

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