CN209787798U - Three-dimensional curved surface blade type drill bit - Google Patents

Abstract

The utility model discloses a three-dimensional curved surface vane type drill bit, including drill bit assembly, drill bit assembly includes the drilling rod, can dismantle the drill bit of connecting in the drilling rod bottom, the drill bit bottom is big-end-up's coniform, the drill bit assembly excircle is provided with two sets of helical blade at least from top to bottom, each group the helical blade external diameter is supreme increase in proper order down, and every helical blade of group includes a plurality of helical blade of central symmetric connection in the drill bit assembly excircle. The utility model discloses drill bit assembly structure is at first tentatively trompil and the direction by the drill bit, and drilling is enlarged in proper order by two-stage helical blade to the back, and the helical blade initial drilling through the below has reduced the helical blade drilling's of top the degree of difficulty, has improved the drilling ability of drill bit assembly, and drilling through helical blade at different levels can make the shaping drilling form a plurality of ladder platform, and the earth that falls back can be accepted to this ladder platform, avoids shaping drilling bottom to be buried by the earth secondary, has improved drilling efficiency.

Description

Three-dimensional curved surface blade type drill bit

Technical Field

The utility model relates to a plant is planted and is punched technical field, in particular to three-dimensional curved surface vane type drill bit.

Background

Transplanting is an important link of crop production, and the transplanting time and quality affect the survival of crops; key technology in the transplanting process of crops when holes are punched and formed;

Taking a tobacco transplanting technology as an example, the film-covered well cellar type seedling transplanting is an optimal transplanting method for solving the problem that flue-cured tobacco is affected by a disaster of late spring cold, achieving early transplanting and enabling tobacco seedlings to obey local climatic conditions. The technology integrates the seedling transplanting and deep planting technologies on the basis of mulching film mulching cultivation, and solves the problems of weak tobacco seedlings in the optimal transplanting period, drought climate in the transplanting period, nonstandard transplanting, slow transplanting progress, long seedling period after tobacco seedling transplanting, poor uniformity and consistency of field tobacco plants and the like in a flue-cured tobacco cultivation area. The soil temperature and humidity environment suitable for the growth of tobacco seedlings is well created, the early growth and the quick growth of the tobacco seedlings are promoted, the suitable early planting of the flue-cured tobacco is ensured, the transplanting efficiency is improved, the drought resistance is enhanced, the occurrence of plant diseases and insect pests is reduced, and the effects of reducing labor and cost, improving quality and increasing efficiency are achieved. The shape of the pores is also one of the important factors affecting the growth of tobacco;

the drilling and pore-forming are key technologies of flue-cured tobacco well cellar type transplanting technology, the pore-forming quality has important influence on the seedling planting efficiency, survival rate and later growth, a drill bit assembly commonly used at present is provided with continuous blades on a drill rod, and the pore-forming is a structure with continuously changed diameter, so that the structure is easy to fall back, the drilling efficiency is low, and the drilling capability of the drill bit assembly is weaker, so that the drill bit assembly cannot adapt to the working condition environment with harder soil;

therefore, in order to solve the above problems, a three-dimensional curved blade-type drill bit is needed, which has a strong drilling capability, prevents the soil from falling back in the forming hole, and has a high drilling efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a three-dimensional curved surface vane type drill bit, its drilling ability is strong, and the shaping hole can prevent earth from falling back, and drilling efficiency is high.

The utility model discloses a three-dimensional curved surface vane type drill bit, including the drill bit subassembly, the drill bit subassembly includes the drilling rod, can dismantle the drill bit of connecting in the drilling rod bottom, the drill bit bottom is big-end-up's coniform, the drill bit subassembly excircle is provided with two sets of helical blade at least from top to bottom, each group the supreme increase in proper order is down followed to the helical blade external diameter, includes a plurality of helical blade of central symmetric connection in the drill bit subassembly excircle in every helical blade of group.

Furthermore, the spiral blade group positioned at the lowest part is a bottom spiral blade, and the edge of the bottom spiral blade is uniformly provided with soil breaking teeth.

Further, drill bit assembly excircle is provided with three helical blade groups from top to bottom, follows supreme bottom helical blade, middle part helical blade and upper portion helical blade in proper order down.

Furthermore, the bottom helical blade is distributed on the drill rod and the drill bit to form a two-section structure, and the upper part of the bottom helical blade at the drill bit is butted below the bottom helical blade at the drill rod.

further, the middle helical blades and the upper helical blades are arranged in a staggered mode.

furthermore, the middle helical blade and the upper helical blade are all provided with three and are symmetrically distributed along the center of the drill rod.

Furthermore, the diameter of the drill rod is gradually reduced from top to bottom, and the outer surface of the drill rod is an inwards concave arc surface.

Further, the drill rod is of a hollow structure with an opening at the top.

Furthermore, the drill rod opening is connected with a plurality of reinforcing ribs which radiate outwards from the center and are connected to the edge of the opening.

the utility model has the advantages that:

the utility model discloses drill bit assembly structure is at first tentatively trompil and the direction by the drill bit, and then expands drilling by two-stage helical blade in proper order, has reduced the degree of difficulty of helical blade drilling above through helical blade initial drilling below, has improved the drilling ability of drill bit assembly, can make the shaping drilling form a plurality of ladder platform through the drilling of helical blade at all levels, and this ladder platform can accept the earth that falls back, avoids shaping drilling bottom to be buried by earth secondary, has improved drilling efficiency;

the utility model discloses bottom helical blade at first breaks ground the operation, wherein the tooth that breaks ground can be broken soil, reduce vertical resistance, reduce the degree of difficulty of other blade drilling, bottom helical blade also can play the effect of sending soil simultaneously, make soil move out in the drilling upwards along bottom helical blade surface, bottom helical blade easily becomes the pore-forming, make drilling primary at the drilling initial stage, and can provide the guide effect to the helical blade drilling of top, the pore-forming quality is improved, this structure can break comparatively hard soil through bottom helical blade, the drilling ability and the applicable operating mode scope of drill bit assembly have been improved;

the forming drill holes formed by the utility model are distinct in level, each drill hole has a definite function, and each drill hole plays its own role, so that the planting efficiency and the planting survival rate of plants are improved;

the utility model discloses helical blade's at different levels spiral angle mutually independent, the angle of adjusting each helical blade can satisfy the requirement of bottom helical blade and middle part helical blade to drilling ability, also can satisfy the requirement that upper portion helical blade splashes to restraining earth.

the invention is further described with reference to the following figures and examples.

Description of the drawings:

FIG. 1 is a perspective view of a drill bit assembly;

FIG. 2 is a schematic view of the drill bit configuration of FIG. 1;

FIG. 3 is a schematic view of the drill bit configuration of FIG. 2;

FIG. 4 is a schematic view of a formation drilling configuration;

Detailed Description

FIG. 1 is a perspective view of a drill bit assembly; FIG. 2 is a schematic view of the drill bit configuration of FIG. 1; FIG. 3 is a schematic view of the drill bit configuration of FIG. 2; FIG. 4 is a schematic view of a formation drilling configuration;

As shown in the figures, the three-dimensional curved surface blade type drill bit in the embodiment comprises a drill bit assembly, wherein the drill bit assembly comprises a drill rod 1 and a drill bit 2 detachably connected to the bottom of the drill rod, the bottom of the drill bit is in a conical shape with a large top and a small bottom, at least two groups of helical blades are arranged on the top and the bottom of the outer circle of the drill bit assembly, the outer diameters of the helical blades of each group are sequentially increased from bottom to top, and each group of helical blades comprises a plurality of helical blades which are centrosymmetrically connected; the diameter of the drill bit can be linearly increased or curve-increased from bottom to top, that is, the outer surface of the drill bit can be an inward concave or outward convex cambered surface structure, which all belong to the conical structures mentioned herein, wherein the bottom of the drill bit can be a sharp structure or a spheroid cambered surface transition structure, which is not described in detail; the structure firstly carries out primary hole opening and guiding by a drill bit, then the drilling is sequentially expanded by two stages of helical blades, the difficulty of drilling the helical blade above is reduced by the primary drilling of the helical blade below, the drilling capability of the drill bit assembly is improved, the forming drilling can form a plurality of stepped platforms by the drilling of all stages of helical blades, the stepped platforms can accept fallen soil, the secondary burying of the bottom of the forming drilling by the soil is avoided, the drilling efficiency is improved, the helical blades at all stages are mutually independent, the locking phenomenon of the drill bit assembly in the drilling process can be effectively prevented, the use reliability of the drill bit assembly is improved, the number of the blades in each group of helical blades can be adjusted according to the specific use working condition, the helical blades of the structure can be centrally and symmetrically connected on the outer circle of the drill rod, and the circumferential drilling can be completed by the angle of the drill rod rotating the central, the drilling efficiency is improved;

In the embodiment, the spiral blade group positioned at the lowest part is a bottom spiral blade 3, and the edges of the bottom spiral blade are uniformly distributed with ground breaking teeth 3 a; as shown in the figure, the ground breaking teeth in this embodiment are rectangular structures, and the ground breaking teeth may also be set to be triangular, trapezoidal, or other polygonal structures, which are not specifically described herein; in the drilling process, the drill bit is pressed into soil by the dead weight of the drill bit assembly, the soil is broken by the bottom helical blade in the rotating process, the soil breaking teeth can break soil, the vertical resistance is reduced, the drilling difficulty of other helical blades is reduced, the bottom helical blade can play a role in conveying soil at the same time, the soil moves upwards out of a drilled hole along the surface of the bottom helical blade, the bottom helical blade is easy to form the hole, the drilled hole is preliminarily formed in the initial stage of drilling, a guiding function can be provided for the drilling of the helical blade above, the swinging of the drill bit assembly in the drilling process is reduced, the drilling stability of the drill bit assembly is improved, and the hole forming quality is improved;

the forming drill hole drilled by the drill bit assembly of the structure is of a ladder-shaped structure, a plurality of ladder planes are arranged on the forming drill hole, fallen soil can be received through the ladder planes, the soil is prevented from falling into the bottommost part of the forming drill hole, the soil is prevented from falling back to fill the forming drill hole, the planting of plants is facilitated, the forming drill hole comprises a plurality of drill pit structures with successively larger apertures from bottom to top, the drill pit structure with the smallest diameter at the bottommost part is used for planting the root part of the plant, the drill pit structure with the largest upper diameter can be used for fertilizing or covering a plastic film or a plastic protective shell for reversely buckling a bowl, when the forming drill hole structure is used for fertilizing, the fertilizer utilization rate is improved, the fertilizer material is reduced, the planting cost is reduced, the structure enables the fertilizer to keep a certain distance from the root part of the plant, and the seedling burning phenomenon can be prevented, certainly, insecticide can be sprayed at the drilled pit, and the drilled pit can enable the fertilizer and the insecticide to stay for a long time, so that the plants can be absorbed and grown easily; when a plastic film or a plastic protective shell is covered, the plastic film can be laid at the step of the forming drill hole, the periphery of the plastic film is compacted by soil, or the bowl-shaped plastic protective shell is directly buckled at the step, the outer diameter of the opening of the plastic protective shell is matched with the diameter of the step, the forming drill hole is well-arranged, each drilling pit has definite function, each drilling pit plays its own role, and the planting efficiency and the planting survival rate of plants are improved;

in the embodiment, three groups of helical blades are arranged on the outer circle of the drill bit assembly from top to bottom, and the helical blades are a bottom helical blade 3, a middle helical blade 4 and an upper helical blade 5 from bottom to top in sequence; as shown in the figure, the forming hole is of a three-level drill nest and a two-level ladder structure, the forming drill hole comprises a drill nest A, a drill nest B and a drill nest C from bottom to top, two levels of steps are sequentially a step alpha and a step beta from bottom to top, wherein the drill nest A is used for planting the root of a plant, the drill nest A can be used for fertilizing at the drill nest B after backfilling soil, the drill nest B is used for reversely buckling a bowl-mounted plastic protective shell to protect the plant at the drill nest C after backfilling soil, the operable platform is improved for realizing each function by the step alpha and the step beta, the implementation of each function is convenient, the step alpha and the step beta are two-level soil bearing platforms in the drilling process and are used for bearing fallen soil, the soil is prevented from falling back into the drill nest A, the drilling efficiency is improved, the structure forms a three-level drill nest and two-level step structure by drilling of three groups of spiral blades, and the realization of, the spiral blades can be matched with each procedure in the plant planting process well, the plant planting efficiency is improved, the spiral angles of the three groups of spiral blades are mutually independent, the spiral angle of a single spiral blade can be changed continuously, the requirements of the bottom spiral blade and the middle spiral blade on the drilling capability and the soil discharge capability can be met by adjusting the angle of each spiral blade, and the requirement of the upper spiral blade on the inhibition of soil splashing can also be met, for example, the included angle of the upper spiral blade relative to the horizontal plane from the bottom to the middle position is gradually increased, the included angle of the upper spiral blade relative to the horizontal plane continuously upwards to the top position is gradually decreased, the soil is conveniently shoveled at the bottom of the upper spiral blade, the soil is conveniently carried at the middle position, the upper position guides the soil, the soil is discharged along the nearly horizontal angle, the upward splashing of the soil is inhibited, particularly, the soil can be effectively prevented from, the good working environment is improved for manual work during drilling, and a circle of mud guard can be wound outside the top of the drill bit assembly by matching with the drill bit assembly, so that the problem of mud splashing is thoroughly solved, and details are not repeated; similarly, the angles of the bottom helical blade and the middle helical blade can be adjusted to improve the drilling capability of the drilling machine, and the angles of the bottom helical blade, the middle helical blade and the upper helical blade can be actually adjusted according to respective required functions, which is not specifically described again;

in the embodiment, the bottom helical blades are distributed on the drill rod and the drill bit to form a two-section structure, and the upper part of the bottom helical blade at the drill bit is butted below the bottom helical blade at the drill rod; as shown in the figure, the top of the drill bit is connected with a screw rod structure, the bottom of the drill rod is provided with a threaded hole structure, the drill bit can be detachably connected onto the drill rod through threaded connection of the screw rod and the threaded hole, the required drilling depths of different plants are different, so that the drill bits with different specifications are replaced to match different drilling requirements, and the drill bit is also provided with bottom helical blades; certainly, if the drilling requirement is not changed, the bottom helical blade may be only arranged on the drill rod on the premise of not changing the drill bit, which is not specifically described; the upper and lower butt joints of the two helical blades can form smooth transition butt joint, the butt joint can also keep a certain included angle, and the connection precision of the butt joint matched with the drill rod and the drill bit can allow dislocation within a certain range, which is not specifically described;

in the embodiment, the middle helical blade and the upper helical blade are respectively provided with three helical blades and symmetrically distributed along the center of the drill rod; three middle helical blades and three upper helical blades of the structure are arranged at a central included angle of 120 degrees, the structure can form one-time circumferential drilling by rotating for 120 degrees, the angle between each helical blade in each stage of helical blade is kept moderate, a larger installation space can be reserved for each helical blade, the arrangement and installation of the helical blades are convenient, the drilling efficiency is considered and fewer blades are kept through the angle arrangement, the cost of a drill bit assembly is reduced, the overall quality of the drill bit assembly is reduced, the portability of the drill bit assembly is improved, and the manual handheld operation is convenient;

In this embodiment, the middle helical blades and the upper helical blades are staggered; the top area of the middle helical blade is arranged between the bottoms of the two upper helical blades in a staggered mode, and can also be arranged right below the bottom of the two upper helical blades;

in the embodiment, the diameter of the drill rod is gradually reduced from top to bottom, the outer surface of the drill rod is an inwards concave arc surface, the drill rod is of a hollow structure with an opening at the top, and the opening of the drill rod is connected with a plurality of reinforcing ribs 6 which radiate outwards from the center and are connected to the edge of the opening; the drill rod is of a structure with a large upper part and a small lower part, so that the stability of the drill bit assembly is improved in the drilling process; compared with a drill rod with a circular truncated cone structure, the drill rod with the structure increases the connecting length of the blades connected to the outer surface of the drill rod, and improves the connecting strength of the blades; the hollow drill rod reduces the material consumption of the drill rod, reduces the manufacturing cost of the drill rod, reduces the overall quality of the drill bit assembly and improves the portability of the drill bit assembly; the strengthening rib structure accessible welded connection is on the drilling rod, also can integrated into one piece connect on the drilling rod, and is specifically not being repeated, can improve the bulk strength and the torsional rigidity of drilling rod through this additional strengthening.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims (9)

1. A three-dimensional curved surface blade type drill bit is characterized in that: including drill bit assembly, drill bit assembly includes the drilling rod, can dismantle the drill bit of connecting in the drilling rod bottom, the drill bit bottom is big-end-up's coniform, be provided with two sets of helical blade at least about the drill bit assembly excircle, each group the helical blade external diameter is supreme increase in proper order down from, includes a plurality of helical blade of central symmetric connection in drill bit assembly excircle in every helical blade of group.

2. The solid curved blade drill according to claim 1, wherein: the spiral blade group positioned at the lowest part is a bottom spiral blade, and the edge of the bottom spiral blade is uniformly provided with soil breaking teeth.

3. the solid curved blade drill according to claim 2, wherein: three groups of helical blades are arranged on the outer circle of the drill bit assembly from top to bottom, and a bottom helical blade, a middle helical blade and an upper helical blade are sequentially arranged from bottom to top.

4. the solid curved blade drill according to claim 2, wherein: the bottom helical blade is distributed on the drill rod and the drill bit to form a two-section structure, and the upper part of the bottom helical blade at the drill bit is butted below the bottom helical blade at the drill rod.

5. The solid curved blade drill according to claim 3, wherein: the middle helical blades and the upper helical blades are arranged in a staggered mode.

6. The solid curved blade drill according to claim 3, wherein: the middle helical blade and the upper helical blade are all provided with three and are symmetrically distributed along the center of the drill rod.

7. The solid curved blade drill according to claim 1, wherein: the diameter of the drill rod is gradually reduced from top to bottom, and the outer surface of the drill rod is an inwards concave arc surface.

8. the solid curved blade drill according to claim 7, wherein: the drill rod is of a hollow structure with an opening at the top.

9. The solid curved blade drill according to claim 8, wherein: the drill rod opening is connected with a plurality of reinforcing ribs which radiate outwards from the center and are connected to the edge of the opening.