Rechargeable electric drill used for tree sampling

Abstract

The invention discloses a rechargeable electric drill used for tree sampling. The rechargeable electric drill comprises the rechargeable electric drill, wherein a front end of the electric drill is provided with a drill stem fixing clamp, the middle of the electric drill is a motor rotor, a top end of the electric drill is provided with a revolving speed regulator, a sidewall of the electric drillis respectively provided with a power switch, a forward drilling switch and a backward drilling switch, a bottom end of the electric drill is internally provided with a rechargeable battery, a tail end top surface of the electric drill is also provided with a bubble level, and the front end of the electric drill is movably connected with a detachable drill stem. By addition of an electric device,the drill stem can conveniently and accurately drill into a tree body, meanwhile, a tree core can be taken out more easily. By addition of the bubble level, a growth cone drill stem can keep horizontal while obtaining the core through rotation, and simultaneously, two sides of the drill stem both are provided with dividing rules, thus, operators can conveniently control drilling depth. Under control of the revolving speed regulator, a drilling machine can output two speeds which are suitable for drilling both the tree core of a relatively hard tree and the tree core of a relatively soft tree.By adding the backward drilling switch, the motor rotor is enabled to rotate reversely, which is convenient for taking out the tree core and provides better usage effect.

Description

technical field [0001] The invention relates to an electric drill, in particular to a rechargeable electric drill used for tree sampling, and belongs to the technical field of scientific research tools for forestry and forest ecology. Background technique [0002] Forestry and dendrochronology research often requires survey and sampling of trees, and tree growth cones are small and light, and without affecting the normal growth of trees, by drilling tree sample cores, the growth rate of trees can be determined after analysis and processing Tree growth information such as tree age, sapwood and core material thickness has become a sampling and measurement tool widely used in the forestry industry. [0003] At present, the most commonly used tree growth cone is the Swedish Haglof growth cone, which is widely used because of its high quality carbon steel material and is easy to carry. However, there are many problems in the actual use in the field: (1) Tree drilling requires for...

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Problems solved by technology

[0003] At present, the most commonly used tree growth cone is the Swedish Haglof growth cone, which is widely used because of its high quality carbon steel material and is easy to carry. However, there are many problems in the actual use in the field: (1) Tree drilling requires forceful rotation The handle of the growth cone is time-consuming and laborious; (2) Although it is equipped with a special core puller, it is still difficult to remove the core, and it is easy to break during the removal of the core; (3) This type of growth cone has no scale and cannot control the drilling The depth of the tree; (4) During the process of drilling the core, the growth cone cannot be guaranteed to be perpendicular to the tree, which affects the quality of the sample

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