CN205052107U - Hole digger drill head - Google Patents

Abstract

The utility model discloses a drill bit, concretely relates to hole digger drill head, including the drill bit body, drill bit body upper segment is the cylinder structure, the hypomere is cone structure, and the center department at the top of drill bit body is equipped with the screw hole, and the surface of drill bit body hypomere is equipped with bellied stripe. Because the elasticity of nest cave inner wall soil can influence the growth of taking root of plant seedling or seed, if nest cave inner wall is too tight real, it is less to loosen the soil, can result in the moisture flow in the soil to be obstructed, be unfavorable for litter cave in ponding permeate in soil, in addition, because the chesson gas permeability is good, the outside air is favorable to the aerobic respiration of plant root in getting into its clearance easily, if it is not enough to loosen the soil in the nest cave, the inside air in nest cave does not obtain changing, then is unfavorable for the aerobic respiration of plant root. The hole digger drill head surface that this patent provided sets up protruding stripe and can scrape eager effect to litter cave inner wall soil, and litter soil of cave inner wall that loosens improves litter loose degree of cave inner wall soil, does benefit to the plant and takes root the growth.

Description

A kind of hole digger drill head

Technical field

The utility model relates to a kind of drill bit, is specifically related to a kind of hole digger drill head.

Background technology

Majority of plant needs when planting to excavate pothole with planting to ploughing, and seed to be planted, seedling etc. is put into pothole and takes root or take root.Traditional excavation pothole method manually makes the cutter that digs with a hoe, and hand labor intensity is large, inefficiency, mechanical cavitation machine existing large-scale at present, and its type volume is large, is not suitable for middle or small cultivated operation of planting ground.

For middle or small plough plant ground dig cave demand, nowadays there has also been equipment of small motor drill bit cavitation machine, its drill bit plays the shaping effect of pothole, because of drill bit existing defects in design, as Chinese patent CN104221532A discloses one " boring cavitation machine ", it comprises power set, actuating unit, hand parts, drill bit etc., and its actuating unit connects flexible axle, gearbox, hard axle, drill bit successively, and power is passed to drill bit after gearbox speed change.Its cavitation steady quality, reliable, but because the bit face of this boring cavitation machine is smooth, when holing cavitation, the inwall of drill bit to pothole extrudes, the pothole inwall consolidation causing scraping out, loosen the soil less, the impact brought like this is: on the one hand, the soil of consolidation can cause the water flow in soil to be obstructed, be then unfavorable for that pothole internal water accumulation permeates in soil under rainwater weather condition, easily causes ponding, even submerged plant root system or plant seedlings, affects the growth of plant then; On the other hand, because chesson good permeability, outside air easily enters in the gap of chesson, be conducive to the aerobic respiration of plant roots, if pothole inwall does not loosen the soil or deficiency of loosening the soil, then the air of pothole inside can not be changed timely and effectively, and then is unfavorable for the aerobic respiration of plant roots.

Utility model content

For the above-mentioned defect that the drill bit of existing cavitation machine exists, the utility model provides a kind of can excavate out the loose hole digger drill head of pothole inwall.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme: a kind of hole digger drill head, comprise drill body, described drill body epimere is cylindrical structure, hypomere is conical structure, the center at the top of described drill body is provided with screwed hole, and the surface of described drill body hypomere is provided with protruding striped.

Operation principle of the present utility model and beneficial effect are: during use, the actuating unit of earth auger is connected with drill bit by screw, time starting working in bit contact ground, drill bit under comparatively high pulling torque effect rapidly boring dig cave, form up big and down small pothole, in pothole forming process, pothole inwall soil is subject to scraping of convex stripe and cuts, when taking out drill bit, protruding striped can take part soil out of, when the pothole volume formed is identical with pothole volume formed by existing drill bit, make pothole inwall loosen because having taken part soil out of, there is chesson in inwall, chesson water flowing is breathed freely, can anti-pothole ponding, so that air incorporates soil, be beneficial to the aerobic respiration of plant roots, loosen the soil and can also reduce the resistance of root growth.In addition, because the existence of bit face striped, the area that soil and drill bit occur to rub can be reduced, because dig in the process of cave generation of loosening the soil always, the active force that drill bit can be made like this to be subject to soil applying reduces, and then the frictional force between soil and drill bit is reduced, also reduce the drill bit distortion caused because of frictional heat simultaneously, extend the service life of drill bit.

Further, described striped is screw thread.Screw thread is set and increases the descending function of rotation to drill bit on the one hand, also reduce the friction area between soil and drill bit simultaneously, reduce the resistance that drill bit is descending, accelerate the downstream rate of drill bit; Loosening the soil of being beneficial on the other hand that pothole inwall comes off is taken out of with drill bit when drill bit takes out pothole fast, and avoiding being deposited on bottom pothole affects the shaping of pothole.

Further, the tip of described drill bit is provided with flat point.Flat point can scrape to playing bottom pothole the effect of cutting, and makes to leave several centimeters at the bottom of pothole and loosens the soil, and reduces root system to the resistance of downward-extension, is convenient to seedlings root and develops downwards.

Further, the end face edge of described drill body extend horizontally away stripper plate.Stripper plate can compress the regolith around pothole mouth, avoids regolith loosen and fall in pothole.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model hole digger drill head.

Embodiment

Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:

Reference numeral: stripper plate 1, drill body 2, screw thread 3, flat sharp 4.

As shown in Figure 1, hole digger drill head, comprise drill body 2, the epimere of drill body 2 is cylindrical structure, and hypomere is conical structure, and the lower section surface of drill body 2 is provided with two protruding screw threads 3, article two, the starting point of screw thread 3 is the tip of drill body 2, and extending to the epimere of drill body 2 and the excessive place of hypomere, the tip of drill body 2 is also provided with flat sharp 4, and the end face edge of drill body 2 extend horizontally away stripper plate 1.

In addition, be provided with screwed hole in the center at drill bit top, when using hole digger drill head, need to be connected with the actuating unit of cavitation machine, so by being provided with screwed hole to realize connection in the center at drill bit top, during the work of cavitation machine, hole digger drill head kiss the earth, cavitation of holing rapidly under comparatively high pulling torque effect, form up big and down small pothole, in pothole forming process, what pothole inwall soil was subject to raised thread 3 scrapes the effect of cutting, and breaks up loose to the soil of pothole inwall; Bottom flat sharp 4 pairs of potholes of bit point of the drill, same performance scrapes the effect of cutting, and makes have several centimeters to loosen the soil at the bottom of pothole, reduces root system to the resistance of downward-extension, is convenient to root system and develops downwards; The cylindrical structure of drill body 2 epimere can meet pothole top and form hollow cylindrical structure, is beneficial to plant leaf blade and stretches outward toward pothole; Before pothole is shaping, when drill bit is drilled to stripper plate 1 from drill bit top to underground touches pothole mouth, along with drill bit continues to pierce to underground, stripper plate 1 compresses loosening the soil around pothole mouth, avoids regolith loosen and fall into pothole.

For a person skilled in the art; under the prerequisite not departing from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.

Claims (4)

1. a hole digger drill head, comprise drill body, described drill body epimere is cylindrical structure, hypomere is conical structure, and the center at the top of described drill body is provided with screwed hole, it is characterized in that: the surface of described drill body hypomere is provided with protruding striped.

2. hole digger drill head as claimed in claim 1, is characterized in that: described striped is screw thread.

3. hole digger drill head as claimed in claim 1 or 2, is characterized in that: the tip of described drill body is provided with flat point.

4. hole digger drill head as claimed in claim 1 or 2, is characterized in that: the end face edge of described drill body extend horizontally away stripper plate.