CN112930768A

CN112930768A - Small-sized agricultural earth drilling machine

Info

Publication number: CN112930768A
Application number: CN202110219987.6A
Authority: CN
Inventors: 江居燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-06-11

Abstract

The invention relates to the field of agricultural machines and tools, and particularly discloses a small agricultural soil drilling machine which comprises a main machine and a drilling tool; the drilling tool comprises a drill rod and a drill bit, wherein the drill rod is provided with a spiral sheet, and the periphery of the spiral sheet is provided with an axial groove; the main machine comprises a rack and a roller sleeve, the roller sleeve is cylindrical, the upper end and the lower end of the roller sleeve are respectively fixed by a top plate and a bottom plate on the rack in a rotating way, and a rotary pushing assembly is arranged inside the roller sleeve; a motor for driving the roller sleeve to rotate and a controller for regulating and controlling the working state of the motor are arranged in the rack; after the drilling tool passes through the roller sleeve, each rotary pushing assembly is respectively positioned in one axial groove, and when the roller sleeve rotates, the rotary pushing assemblies push the axial grooves to drive the drill rod to rotate, so that the drill rod can drill downwards. The small agricultural soil drilling machine is scientific and reasonable in structural design, high in mechanical part utilization rate, small in energy loss, convenient and fast to use, efficient and labor-saving in operation, large in drilling depth range, high in practicability and wide in application prospect in agricultural production.

Description

Small-sized agricultural earth drilling machine

Technical Field

The invention relates to an agricultural machine, in particular to a small-sized soil drilling machine suitable for drilling soil in agricultural production.

Background

An agricultural soil drilling machine is a mechanical device commonly used in the agricultural production process, can efficiently and quickly drill holes in soil, and is widely applied to the operation processes of crop seedling planting, deep fertilization of forest trees, pile burying in greenhouse or fence construction and the like. The small-sized agricultural earth drilling machine with the structure has a plurality of defects in the practical application process, one of the defects is that before the drilling operation is started, the equipment needs to be manually erected on the ground, the heavy main machine needs to be lifted to a high position, the main machine needs to be manually supported in the drilling operation process, after the drilling operation is finished, the whole equipment needs to be lifted so that a drill rod can be moved out of a hole, the whole operation process is labor-consuming, and the small-sized agricultural earth drilling machine cannot be operated by a single person; secondly, the direction of the drill rod is usually controlled by an operator holding the main machine, the drilling direction is difficult to accurately control and cannot be kept constant, and the finally formed hole diameter and hole direction of the drill hole are not standard, so that adverse effects on subsequent operations are often caused; thirdly, the existing small-sized agricultural earth drill is not suitable for overlong drill rods based on the hand-held structural design characteristics, otherwise, the existing small-sized agricultural earth drill cannot be used by hand, so that the maximum drilling depth is small, the practicability is greatly reduced, and the utilization rate in agricultural production operation is greatly reduced.

Disclosure of Invention

The invention aims to provide a small agricultural soil drilling machine which is flexible and convenient to use, time-saving and labor-saving to operate, capable of accurately controlling the hole direction, standard in hole shape and large in maximum drilling depth.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a small-size agricultural earth boring machine, it comprises host computer and drilling tool two parts, its characterized in that:

the drilling tool comprises a drill bit and a plurality of drill rods which can be connected in a combined mode, the drill rods are arranged and can be connected end to end, and each drill rod is composed of a core rod and a spiral sheet fixed outside the core rod; at least two axial grooves extending axially are formed on the periphery of the spiral piece;

the main machine comprises a frame and a roller sleeve; the rack is provided with a top plate and a bottom plate which are distributed up and down, and the bottom plate has a ground clearance after the rack is flatly placed on the ground; the roller is hollow and cylindrical, and the upper end and the lower end of the roller are respectively rotationally fixed through a top plate and a bottom plate, so that the roller is vertical and can only rotate; the inside of the roller sleeve is provided with rotary pushing components with the same number as the axial grooves; the rotary pushing assembly comprises a convex strip which is fixed on the inner wall of the roller sleeve and extends up and down, and a conveying belt which is sleeved outside the convex strip and can circularly rotate and transmit, wherein a plurality of guide rollers which provide support and guide for the conveying belt are arranged on the convex strip; a motor for driving the roller sleeve to rotate and a controller for regulating and controlling the working state of the motor are arranged in the rack;

after a drilling tool vertically penetrates through the inner cavity of the roller sleeve, each rotary pushing assembly is respectively positioned in an axial groove, a drilling rod can axially move, and the central axis of the drilling rod is overlapped with the rotating shaft of the roller sleeve; when the rolling sleeve rotates, the rotary pushing assembly pushes one side of the axial groove through the transmission belt to drive the drill rod to synchronously rotate along with the rolling sleeve, so that the drill rod drills downwards, the transmission belt can rotate and transmit along with the downward movement of the drill rod, and the obstruction of the rotary pushing assembly on the downward movement of the drill rod is reduced.

Compared with the prior art, the small-sized agricultural soil drilling machine has the following technical effects:

in the drilling process, the main machine can be placed on the ground without manually lifting the main machine or manually supporting the main machine, so that the operation is more labor-saving, and the whole drilling process can be completed by a single person; after the host is placed and fixed, the drilling tool rotates and moves in the expected direction in the drilling process, the drilling direction can be kept constant, manual control is not needed, the hole direction is more accurate, and the hole shape is more standard; the length of the drilling tool is more flexibly set during the manufacturing process because the host does not need to be lifted to the upper end of the drilling tool during the drilling process, the length of the drilling tool can be increased according to actual needs, and the drilling depth range is increased under the condition that the equipment is easy to carry and move, so that the practicability of the small agricultural soil drilling machine is improved; based on the structural characteristics of the small agricultural soil drilling machine, the main machine can drive a plurality of drill rods connected end to drill into soil successively, so that deep holes can be drilled, and the application range of the small agricultural soil drilling machine in agricultural production is further expanded. To sum up, this small-size agricultural earth boring machine's structural design scientific and reasonable, mechanical parts high-usage, energy loss is little, and convenient to use is swift, operates high-efficient laborsaving, and drilling depth range is big, and the practicality is strong, has wide application prospect in agricultural production.

Drawings

Fig. 1 is one of the schematic structural views of a drilling tool in embodiment 1.

Fig. 2 is a second schematic view of the structure of the drilling tool in embodiment 1.

Fig. 3 is a schematic structural diagram of a host according to embodiment 1.

Fig. 4 is a partially broken-away schematic view of the host in embodiment 1.

Fig. 5 is a schematic view of the combination of the roller and the rotational push assembly in embodiment 1.

Fig. 6 is a schematic view of the state of the drilling tool engaged with the main machine in embodiment 1.

Fig. 7 is a schematic structural diagram of the main machine driving the drilling tool to rotate in the embodiment 1.

Fig. 8 is a schematic view showing the combination of the roller, the rotational push assembly and the drill rod in the embodiment 1.

Fig. 9 is a schematic structural diagram of the host in embodiment 2.

FIG. 10 is a schematic view showing the construction of a friction wheel, a stirring blade and a rotating shaft in accordance with embodiment 2.

Fig. 11 is a schematic view of the state of the drilling tool engaged with the main machine in embodiment 3.

Fig. 12 is a schematic structural diagram of the host in embodiment 4.

Fig. 13 is a schematic view showing the upward rotational movement of the drill rod by the arcuate arm in example 4.

FIG. 14 is a schematic view showing the structure of the elastic string for providing downward pressure to the drilling tool in example 5.

In the figure, 1, a drill bit, 2, a bolt, 3, a jack, 4, a locking bolt, 5, a drill rod, 501, a spiral sheet, 502, a core rod, 6, an axial groove, 7, a power chamber, 8, a frame, 9, a controller, 10, a bottom plate, 11, a ring wheel, 12, a reinforcing rod, 13, a rotary pushing component, 131, a guide roller, 132, a convex strip, 133, a conveyor belt, 14, a roller sleeve, 15, a top plate, 16, a lifting handle, 17, a guardrail, 18, a bearing plate, 19, a motor, 20, a gradienter, 21, a soil retaining plate, 22, a rotary shaft, 23, a material shifting ploughshare, 24, an end wheel, 25, a friction wheel, 26, a ring platform, 27, a radial hole, 28, a bearing rod, 29, a rubber sleeve, 30, a guide wheel, 31, an arc arm, 32, a hook, 33, an elastic rope, 34, a pulley, 35, a guide frame, 36, a pressing cap, 37 and a.

Detailed Description

Example 1

The small agricultural earth drilling machine disclosed by the embodiment consists of a main machine and a drilling tool which work in a matching way;

as shown in fig. 1 and 2, the drilling tool comprises a drill bit 1 and a plurality of drill rods 5 which can be connected in a combined manner, wherein the drill rods 5 are provided with a plurality of drill bits which can be connected end to end; the drill rod 5 consists of a core rod 502 and a spiral sheet 501, and the spiral sheet 501 is wound and fixed outside the core rod 502; at least two axial grooves 6 extending axially are formed in the periphery of the spiral piece 501;

as shown in fig. 3-6, the main frame includes a frame 8 and a roller 14; the rack 8 is provided with a top plate 15 and a bottom plate 10 which are distributed up and down, and the bottom plate 10 has a ground clearance after the rack 8 is flatly placed on the ground; the roller sleeve 14 is hollow and cylindrical, and can be used for a drill rod 5 to pass through, the upper end of the roller sleeve 14 is rotationally fixed through a top plate 15, and the lower end of the roller sleeve 14 is rotationally fixed through a bottom plate 10, so that the roller sleeve 14 is vertical and can only rotate around the central axis thereof; the inner wall of the roller 14 is provided with rotary push components 13 with the same number as the axial grooves 6; each rotary pushing assembly 13 comprises a convex strip 132 and a conveyor belt 133, the convex strip 132 is long, is fixed on the inner wall of the roller sleeve 14 and extends along the vertical direction, the conveyor belt 133 is sleeved outside the convex strip 132 and can perform vertical transmission in a circulating rotation mode, and a plurality of guide rollers 131 for supporting and guiding the conveyor belt 133 are arranged on the convex strip 132; a motor 19 and a controller 9 are arranged in the frame 8, the motor 19 is in transmission connection with the roller 14 and is used for driving the roller 14 to rotate, and the controller 9 is used for regulating and controlling the working states of the motor 19 such as starting and stopping, rotating speed and steering;

referring to fig. 6, 7 and 8, after the drilling tool vertically passes through the inner cavity of the roller sleeve 14 from top to bottom, each of the rotational pushing assemblies 13 is respectively located in an axial groove 6, and at this time, the drill rod 5 can axially move and the central axis thereof is coincident with the rotation axis of the roller sleeve 14; when the roller sleeve 14 is driven to rotate by the motor 19, the rotary pushing assembly 13 pushes one side of the axial slot 6 through the conveyor belt 133 to drive the drill rod 5 to synchronously rotate along with the roller sleeve 14, so that the drill rod 5 drills downwards, namely drilling is realized; during drilling, the conveyor belt 133 can rotate and transmit along with the downward movement of the drill rod 5, so as to reduce the obstruction of the downward movement of the drill rod 5 by the rotating and pushing assembly 13, and reduce the wear rate between the rotating and pushing assembly 13 and the drill rod 5.

The using method and the working principle of the small agricultural soil drilling machine are as follows:

referring to fig. 6, 7 and 8, the main machine is stably placed on the ground according to actual requirements, for example, an inclined hole is drilled, the main machine is placed in an inclined manner, the drill bit 1 and the drill rod 5 are assembled and connected and then penetrate through the roller sleeve 14 from top to bottom, the drill bit 1 is inserted into soil, the motor 19 is started to drive the roller sleeve 14 to rotate, each rotating and pushing assembly 13 pushes one side of the corresponding axial groove 6 to drive the drill rod 5 and the whole drilling tool to synchronously rotate along with the roller sleeve 14, the drilling tool continuously drills into the soil through the spiral piece 501 in the rotating process, the motor 19 stops operating after the drilling hole reaches the expected depth, and the drilling tool is taken out of the hole, so that the whole drilling operation is completed.

This small-size agricultural earth boring machine in use, when the required degree of depth of drilling can't be satisfied to the length of a drilling rod 5, can connect many drilling rods 5 and improve the drilling depth, and concrete operation is: when the upper end of the drill rod 5 is close to the upper end of the roller sleeve 14, the other drill rod 5 is connected to the upper end of the drill rod 5, then drilling is continuously carried out, the connected drill rod 5 can continuously drill towards the underground, therefore, a plurality of drill rods 5 are sequentially drilled into the underground according to needs until the required drilling depth is reached, the position of a host is not required to be adjusted in the whole drilling process, the operation is efficient and rapid, and time and labor are saved; based on the characteristic that the drilling depth range of the small-sized agricultural soil drilling machine is large, the small-sized agricultural soil drilling machine is suitable for operations such as underground water sampling, deep soil sampling and agricultural facility pile foundation construction.

Referring to fig. 7 and 8, when the small agricultural earth drilling machine drills a hole, the conveyor belt 133 can rotate and transmit along with the downward movement of the drill rod 5, so that the friction effect generated by the rotary pushing assembly 13 and the drill rod 5 in the axial direction is mainly rolling friction instead of sliding friction, acting forces generated by the rotary pushing assembly 13 and the drill rod 5 in the axial direction are greatly reduced, on one hand, the blocking effect of the rotary pushing assembly 13 on the downward movement of the drill rod 5 is reduced, the energy loss in the transmission process of the rotary pushing assembly 13 and a drilling tool is reduced, on the other hand, the abrasion rate of the contact part of the rotary pushing assembly 13 and the drill rod 5 can be greatly reduced, and the stable working time of the equipment is prolonged; when the small agricultural earth drilling machine is manufactured, the conveyor belt 133 may be made of a high-strength wear-resistant flexible material, or a chain conveyor belt made of a high-strength wear-resistant material.

This small-size agricultural earth boring machine is at the drilling in-process, the host computer lay in ground can, need not artificially to raise it, need not to hold it manually, the operation is saved trouble laborsaving, the completion can be operated to whole drilling single.

When utilizing this small-size agricultural earth boring machine to drill, lay the host computer fixed back, drilling in-process drilling tool will carry out rotary motion according to anticipated direction, and the direction of drilling can keep invariable and need not artificial control, and the hole is to more accurate, and the hole shape is more standard.

When utilizing this small-size agricultural earth boring machine to drill, owing to need not the upper end with host computer lifting to drilling tool, consequently the length setting of drilling tool is more nimble when the preparation, can improve the length of drilling rod 5 according to actual need, improves the drilling depth scope under the circumstances that the assurance equipment easily carried and removed to improve this small-size agricultural earth boring machine's practicality.

To sum up, this small-size agricultural earth boring machine's structural design scientific and reasonable, mechanical parts high-usage, energy loss is little, and convenient to use is swift, operates high-efficient laborsaving, and drilling depth range is big, and the practicality is strong, has wide application prospect in agricultural production.

Further, referring to fig. 1 and 2, in the small agricultural earth drilling machine, the lower end of the drill rod 5 is provided with a jack 3, the upper ends of the drill rod 5 and the drill bit 1 are provided with a bolt 2, and the drill rod 5 is provided with a locking bolt 4 for locking the jack 3 and the bolt 2; based on the design, the disassembly and assembly between the drill rod 5 and between the drill rod 5 and the drill bit 1 are more convenient and faster, the stability of the combined connection of the components is ensured, and the separation of the connected components in the drilling operation process is avoided.

Further, referring to fig. 4, 6 and 7, in the small agricultural earth drilling machine, the middle lower part of the frame 8 is provided with a power chamber 7, the motor 19 is arranged in the power chamber 7, the upper end of the power chamber 7 is provided with a horizontal bearing plate 18, and a guardrail 17 is arranged above the bearing plate 18; in the drilling operation process, the stability of the main machine in the drilling operation can be improved by standing a person on the bearing plate 18 or placing a counterweight article on the bearing plate 18 and the like, the main machine is prevented from moving in the drilling operation process, and the guardrail 17 can prevent the person or the article above the bearing plate 18 from sliding or falling; in addition, the working stability of the main machine can be further improved by adding an anti-skid piece at the lower end of the frame 8.

Further, referring to fig. 7 and 8, in the small agricultural earth boring machine, each axial groove 6 forms a group of groove-shaped notches which are spaced by a screw pitch and are axially distributed at intervals on the outer edge of the spiral piece 501; when the rotary pushing assembly 13 pushes one side of the axial groove 6 to drive the drill rod 5 to rotate, each rotary pushing assembly 13 pushes at least three groove-shaped notches which are distributed up and down, so that the rotary pushing assembly 13 is fully contacted with the drill rod 5, the transmission stability between the rotary pushing assembly 13 and the drill rod 5 is improved, and especially, the phenomenon that the spiral piece 501 is deformed or damaged due to overlarge local stress is avoided.

Further, referring to fig. 3 and 6, in the small agricultural earth drilling machine, the frame 8 is provided with the level gauge 20, and the host can be horizontally placed more accurately and quickly by referring to the level gauge 20, so that the verticality of the drilled hole can be more accurately ensured; meanwhile, the level gauge 20 can adopt a model with an inclination angle measuring function in the prior art, so that the level gauge 20 can be adjusted to a specific angle more accurately and quickly when an inclined hole is drilled.

Further, referring to fig. 3 and 6, in the small-sized agricultural earth boring machine, a plurality of reinforcing rods 12 for fixedly connecting the bottom plate 10 and the top plate 15 are provided between the bottom plate 10 and the top plate 15, so that the relative positions of the bottom plate 10 and the top plate 15 are ensured to be constant, and the structural stability of the whole device is improved.

Further, in the small-sized agricultural earth boring machine described above, a storage battery (not shown) for supplying electric power to the motor 19 is installed in the housing 8, thereby making the small-sized agricultural earth boring machine more flexible to use.

Further, referring to fig. 3 and 6, in the small agricultural earth boring machine, a handle 16 is fixed to the upper end of the top plate 15, so that the small agricultural earth boring machine is more convenient to move or carry.

Further, referring to fig. 2, 5 and 6, in the small agricultural earth boring machine, all the axial grooves 6 are rotationally symmetrically distributed with the central axis of the boring bar 5 as a symmetric center, and all the rotational push assemblies 13 are rotationally symmetrically distributed with the rotational axis of the roller 14 as a symmetric center, so that the driving force applied to the boring bar 5 during boring is more balanced, and the boring bar can be bored downward more stably.

Further, referring to fig. 2, 5 and 6, in the small agricultural earth boring machine, the number of the axial grooves 6 is two, and the axial grooves are symmetrically distributed around the central axis of the drill rod 5; the rotary push components 13 are also provided with two sets and are symmetrically distributed by the central shaft of the rolling sleeve 14; therefore, the driving force applied to the drill rod 5 in the drilling process can be ensured to be balanced, and the adverse effect on the conveying effect of the drill rod 5 due to the arrangement of the axial grooves 6 can be reduced to the maximum extent.

Further, as shown in fig. 4 and 6, in the small-sized agricultural soil drilling machine, the roller 14 has a hollow structure, so that on one hand, the weight of the roller 14 can be reduced, the small-sized agricultural soil drilling machine is lighter and has lower operation energy consumption, and on the other hand, part of soil carried by the spiral piece 501 in the drilling process can be discharged to the outside at the hollow part of the roller 14, so that the operation of the equipment is more stable and efficient.

Further, referring to fig. 4, 5 and 7, in the small agricultural earth boring machine, the roller 14 is sleeved with the annular wheel 11 coaxial with the roller, and the annular wheel 11 is in transmission connection with the output wheel of the motor 19 through the flexible member, so that the transmission structure between the roller 14 and the motor 19 is simpler, the maintenance is facilitated, and the transmission efficiency is more efficient.

Example 2

In the drilling operation process of the small agricultural soil drilling machine disclosed in the foregoing embodiment, the helical blade 501 conveys the soil generated by drilling to the ground, if the drilling depth is shallow, the generated soil is less, and the normal operation of the drilling operation is generally not affected, if the drilling depth is deep, the soil needs to be transferred to avoid the soil from gathering above the hole to affect the operation efficiency of the drilling, and an operator can transfer the soil generated by drilling to avoid the soil from gathering above the hole by using tools such as a shovel, but the operation mode is troublesome, time-consuming and labor-consuming. Therefore, the embodiment is further improved on the basis of the structure of the small agricultural earth drilling machine disclosed in the embodiment 1, and the specific structure is as follows:

referring to fig. 9 and 10, an end wheel 24 is arranged at the lower end of the roller sleeve 14, the end wheel 24 is positioned at the lower side of the bottom plate 10, a plurality of rotating shafts 22 which extend downwards and can rotate are additionally arranged at the lower side of the bottom plate 10, the rotating shafts 22 are distributed around the end wheel 24, friction wheels 25 are fixed on the rotating shafts 22, the wheel surfaces of the friction wheels 25 and the end wheel 24 are propped against each other and can be driven by friction force, material shifting ploughshares 23 are arranged at the lower end of the rotating shafts 22, and the material shifting ploughshares 23 can throw soil around the rotating shafts 22 outwards in the rotating process along with the rotating shafts 22.

Therefore, in the drilling operation process, the roller sleeve 14 can drive the rotating shaft 22 to rotate and obtain a higher rotating speed through the transmission of the end wheel 24, the friction wheel 25 and other components, the material shifting ploughshares 23 at the lower end of each rotating shaft 22 can throw out soil around the corresponding rotating shaft 22 outwards by virtue of centrifugal force, and all the material shifting ploughshares 23 work together to disperse the soil generated in the drilling operation process around the hole, so that the drilling operation is carried out stably and efficiently, the soil is not required to be manually processed, and the drilling operation is convenient, rapid, time-saving and labor-saving.

Still further, referring to fig. 9, the lower side of the frame 8 is provided with a retaining plate 21 for preventing the soil from gathering at a specific position, for example, the retaining plate 21 may be disposed at one end of the base plate 10 to prevent the material-pushing ploughshare 23 from throwing the soil to a position where an operator normally stands, so as to facilitate the operation of the apparatus by the operator.

Example 3

Referring to fig. 6 and 7, in the structure adopted by the small agricultural earth drilling machine disclosed in the foregoing embodiment, the helical blade 501 is provided with the axial grooves 6, and the outer edge of the helical blade 501 is provided with the groove-shaped notches which are spaced by taking the screw pitch as the interval and are distributed at intervals in the axial direction, and the upward conveying capacity of the drill rod 5 for the earth is weakened by the special structure of the helical blade 501, but because the soil in the farmland is poor in fluidity, in addition, the parameters such as the position, the number, the shape and the size of the axial grooves 6 can be reasonably adjusted during implementation, so that the defect of poor conveying capacity is overcome, and the helical blade 501 can be ensured to convey the earth generated in the drilling process to the ground. Meanwhile, the present embodiment is further improved on the basis of the structure of the small agricultural earth-boring machine disclosed in embodiment 1, and the conveying capacity of the spiral piece 501 to earth materials during drilling is improved from another layer, and the adopted structure is as follows:

referring to fig. 11, the upper end of the roller 14 is provided with an annular table 26, and the annular table 26 protrudes from the upper side of the top plate 15; the small agricultural soil drilling machine is also provided with a bearing rod 28, both ends of the bearing rod 28 are respectively provided with a detachable rubber sleeve 29, and the drill rod 5 is provided with a plurality of radial holes 27 which are distributed at intervals up and down and through which the bearing rod 28 passes; after the support rod 28 passes through the radial hole 27, the rubber sleeve 29 at both ends of the support rod 28 can abut against the upper side of the annular table 26 to prevent the drill rod 5 from moving downward.

Based on the structure, in the drilling operation, after the drilling hole reaches the expected depth, the motor 19 is turned off to stop the rotation of the drill rod 5, the supporting rod 28 penetrates through the radial hole 27 of the drill rod 5 close to the upper side of the annular table 26, the rubber sleeve 29 is installed, the motor 19 is turned on to rotate the drill rod 5 at a high speed, the drill rod 5 cannot move downwards continuously after the rubber sleeve 29 is contacted with the annular table 26, and the spiral piece 501 rotates at a high speed at a constant height, so that soil in the hole can be conveyed to the ground more efficiently and thoroughly.

Example 4

Referring to fig. 6, after the small agricultural soil drilling machine disclosed in the foregoing embodiment is used to complete drilling, the drilling tool should be taken out of the drilled hole, when the drilling depth is shallow, the drilling tool is relatively easy to take out, and manual operation is only needed, but when the drilling depth is large, the resistance of the drilling tool moving upwards is large, and the drilling tool is heavy due to the fact that the plurality of drill rods 5 are connected together, it is laborious to manually take out the drilling tool from the drilled hole, and the operation is not convenient enough, so as to solve the technical problem, the embodiment is further improved on the basis of the structure of the small agricultural soil drilling machine disclosed in embodiment 1, and the specific structure is as follows:

referring to fig. 12 and 13, an arc-shaped arm 31 is arranged on the top plate 15, the arc-shaped arm 31 has two working positions according to different positions and can be switched between the two working positions, and a guide wheel 30 is arranged on the upper end surface of the arc-shaped arm 31; the arcuate arm 31 does not contact the drill rod 5 when in a working position and can be used as a handle; when the bow arm 31 is in another working position, the guide wheel 30 at the upper end of the bow arm 31 will extend into the underside of the spiral surface of the spiral piece 501 close to the drill rod 5, and when the drill rod 5 is rotated in the opposite direction of drilling, the spiral piece 501 cooperates with the guide wheel 30 to cause the drill rod 5 to move upwards.

Therefore, in the normal use process, the arched arm 31 can be used as a handle, is convenient and smooth and does not form any obstacle to the movement of the drill rod 5; after drilling is completed, the position of the arched arm 31 is adjusted to enable the arched arm 31 to move towards the direction of the drill rod 5, the guide wheel 30 at the upper end of the arched arm 31 extends into the lower side of the spiral surface of the spiral piece 501, the rotation direction of the motor 19 is adjusted to enable the roller sleeve 14 to rotate towards the other direction, the rotary pushing assembly 13 pushes the other side of the axial groove 6 through the transmission belt 133 to drive the drill rod 5 to rotate towards the opposite drilling direction, the spiral piece 501 is matched with the guide wheel 30 to enable the drill rod 5 to move upwards, and therefore the drill rod can be taken out of a hole in a labor-saving and rapid mode.

Similar to the principle of drilling operation, when the drill rod 5 is driven to move out of the hole in the above manner, the conveyor belt 133 can perform rotary transmission along with the upward movement of the drill rod 5, so that the blocking effect of the rotary pushing assembly 13 on the upward movement of the drill rod 5 is reduced, and the wear rate of the contact part of the rotary pushing assembly 13 and the drill rod 5 is reduced.

Example 5

Referring to fig. 7, in the small agricultural earth boring machine disclosed in the foregoing embodiment, since the drill bit 1 generally has a tip and a boring structure, and is influenced by the shape and characteristics of the flight 501, the gravity of the drill, and other factors, when the drill is driven by the roller sleeve 14 to rotate, it is generally capable of boring downward without providing additional downward force to the drill, but when the boring soil is hard, the drilling rate of the drill is slow, and the boring efficiency is reduced to some extent, and therefore, the present embodiment has a further improvement on the structure of the small agricultural earth boring machine disclosed in embodiment 1, and the specific structure is as follows:

referring to fig. 14, the small agricultural earth boring machine further comprises a pressing assembly, the pressing assembly comprises a pressing cap 36, a guide frame 35 and an elastic rope 33, the pressing cap 36 can be fastened and fixed at the upper end of the drill rod 5, the guide frame 35 is arranged at the upper end of the pressing cap 36 and can rotate relative to the pressing cap 36, a plurality of pulleys 34 are arranged on the guide frame 35, the elastic rope 33 can move along the pulleys 34, and hooks 32 are arranged at two ends of the elastic rope 33; the upper end of the main machine is provided with two hangers 37 which are respectively positioned at the two sides of the rolling sleeve; after the pressing cap 36 is buckled on the upper end of the drill rod 5 and the two hooks 32 of the elastic rope 33 are respectively connected with the two lugs 37, the elastic rope 33 is in a stretching state and can indirectly provide downward pressure for the drill rod 5.

Therefore, the pressing-down component can be arranged according to actual needs, and a certain pressing force is provided for the drill rod 5 by means of the elastic force of the elastic rope 33, so that the drilling speed is improved, and the drilling efficiency is improved.

Claims

1. A small-size agricultural earth boring machine, it comprises host computer and drilling tool two parts, its characterized in that:

2. A compact agricultural earth boring machine according to claim 1, wherein: the drilling rod lower extreme be equipped with the jack, drilling rod and drill bit upper end between them then be equipped with the bolt, install on the drilling rod and be used for carrying out the locking bolt that locks with jack and bolt.

3. A compact agricultural earth boring machine according to claim 1, wherein: the rack is provided with the level meter, and the host can be horizontally placed more accurately and rapidly by referring to the level meter.

4. A compact agricultural earth boring machine according to claim 1, wherein: and a plurality of reinforcing rods for fixedly connecting the bottom plate and the top plate are arranged between the bottom plate and the top plate.

5. A compact agricultural earth boring machine according to claim 1, wherein: and a storage battery for providing electric energy for the motor is arranged in the frame.

6. A compact agricultural earth boring machine according to claim 1, wherein: and a handle is fixed at the upper end of the top plate.

7. A compact agricultural earth boring machine according to claim 1, wherein: the roller sleeve adopts a hollow structure.

8. A compact agricultural earth boring machine according to claim 1, wherein: the roller sleeve is sleeved with an annular wheel coaxial with the roller sleeve, and the annular wheel is in transmission connection with an output wheel of the motor through a flexible part.

9. A compact agricultural earth boring machine according to claim 1, wherein: all the axial grooves are rotationally and symmetrically distributed by taking the central shaft of the drill rod as a symmetric center, and all the rotary push components are rotationally and symmetrically distributed by taking the rotary shaft of the roller sleeve as a symmetric center.

10. A compact agricultural earth boring machine according to claim 1, wherein: the number of the axial grooves is two, and the axial grooves are symmetrically distributed by using the central shaft of the drill rod; the rotary push components are also provided with two sets and are symmetrically distributed by the central shaft of the rolling sleeve.