Electric drill stem capable of achieving guiding and being taken back easily

Abstract

The invention relates to the field of electric drills, in particular to an ice surface electric drill bit. An electric drill stem capable of achieving guiding and being taken back easily comprises a middle rod and a spiral blade, wherein the spiral blade is fixedly wound around the middle rod in a spiral mode, the bottom of the middle rod is fixedly provided with a locating cone, the center of the side wall of the locating cone is symmetrically provided with a pair of cutting pieces which are arranged in an inclined mode, the upper end face of one cutting piece is connected with the spiral blade, the length of each cutting piece is greater than the radial height of the spiral blade, a guiding rod is fixedly erected between the outer edge of the upper end face of each cutting piece and the spiral blade, and the lower end face of each cutting piece is a cutting edge. According to the ice surface electric drill stem, the guiding rods are used for limiting, it can be guaranteed that the axis of the middle rod and the axis of an ice hole are consistent after an ice layer is drilled thoroughly, so that the drill stem can be directly taken back without manual regulation, mechanized continuous drilling is achieved, drilling efficiency of the ice surface is greatly improved, labor intensity of fishermen is lowered, and convenience is brought to the north fishermen catching fish in winter.

Description

Technical field [0001] The invention relates to the field of electric drills, in particular to an ice surface electric drill bit. Background technique [0002] In the northern regions, because the temperature is very low, the river water will form thick ice in winter. When fishermen want to fish, they need to dig through thick ice. Fishermen would manually dig holes in the ice for fishing or use electric drills to drill holes. The ice surface itself is very hard, smooth and dense, so the effect of using ordinary electric drills to drill holes on the ice surface is not very good, and the drilling pressure that can be placed on small agricultural machinery is not very high, so It is necessary to install some auxiliary components at the bottom of the drill bit to smoothly penetrate the ice layer and facilitate fishing. Because fishing needs to drill a hole, it will inevitably penetrate the entire ice layer. At this time, the bottom of the electric drill will protrude into the ice...

AI Technical Summary

Problems solved by technology

Because when fishing needs to drill a hole, it will inevitably drill through the entire ice layer. At this time, the bottom of the electric drill will stick out of the ice layer. Because of the existence of auxiliary parts, the electric drill will be difficult to retract; because the electric drill bit drills through the ice layer. , the force has changed, the axis of the drill pipe will deviate from the axis of the drilled hole, and the drill bit will be like this figure 1 As shown, it is stuck under the ice layer. It is inconvenient to manually find the ice hole by shaking it to retrieve the drill bit smoothly.

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