Soil digging device

Abstract

The present invention relates to a soil digging device comprising: a frame installed on an agricultural machine that travels along the ground of cultivated land; and a digging member which is supported on the frame by a suspension unit so as to be towable by the agricultural machine, and which is obstructed by the ground and forms drainage holes in the cultivated land. The suspension unit elastically supports the digging member against the frame in order to prevent the digging member from becoming caught on an obstacle on the ground upon coming into contact therewith. In the soil digging device according to the present invention, the digging member is elastically supported by the agricultural machine, and thus does not become caught on an obstacle upon colliding therewith, but is instead moved in the up-down direction or the left-right direction and passes through, and thus the digging member is prevented from being damaged by the obstacle.

Description

Bottling device

[0001] The present invention relates to a soil drainage device, and more particularly, to a soil drainage device that is towed by an agricultural machine and forms a drainage hole in a cultivated field.

[0002] Rice is primarily grown using the transplanting method. However, direct seeding, a method that skips the seedling and transplanting stages and sows rice seeds directly into the field, is on the rise. This direct seeding method is performed using a direct seeding machine.

[0003] Direct seeding requires irrigating and then draining the field. If drainage is inadequate during this process, crop growth can be adversely affected. Therefore, drainage ditches must be created in the field, following the direction of water flow from the upper to the lower paddy field.

[0004] Conventional drilling devices are installed on the side of a direct seeder, forming drainage ditches in the field as the drill moves. However, conventional drilling devices have the disadvantage of becoming entangled or damaged when they collide with obstacles such as relatively large rocks in the field.

[0005] The present invention was created to improve the above-mentioned problems, and its purpose is to provide a soil-digging device that elastically supports a digging member to an agricultural machine to prevent the digging member from getting caught on an obstacle in a farmland.

[0006] In order to achieve the above object, the present invention provides a soil drilling device comprising: a frame installed on an agricultural machine moving along the ground of a cultivated field; and a drilling member supported on the frame by a suspension unit so as to be towed by the agricultural machine, the drilling member interfering with the ground and forming a drainage hole in the cultivated field; and the suspension unit elastically supports the drilling member with respect to the frame so as to prevent the drilling member from getting caught on an obstacle on the ground when the drilling member comes into contact with the obstacle.

[0007] The above suspension unit comprises a first link member, one end of which is installed to be rotatable in the vertical direction on the frame, a second link member, one end of which is installed to be rotatable in the left and right direction based on the moving direction of the agricultural machine, and the second link member is installed at the other end of the first link member, and an elastic unit that provides elastic force to the first link member or the second link member so that the first link member or the second link member returns to the initial position when rotated by the bone digging member that comes into contact with the obstacle.

[0008] The above frame comprises an attachment block installed on the agricultural machine, a rotation support member installed on the attachment block and having one end of the first link member rotatably installed, the rotation support member being installed on the attachment block, a link connecting body having one end of the first link member rotatably installed based on an imaginary center line extending in the left and right directions, and an interference member protruding from the link connecting body at a position spaced downward from one end of the first link member so as to interfere with the first link member so that the other end of the first link member is positioned forward or backward relative to the one end.

[0009] The above-mentioned golf club member is installed on the left or right side of the agricultural machine, and the suspension unit further includes a rotation angle limiting member that allows the second link member to rotate in a direction adjacent to the agricultural machine, but prevents the second link member from rotating in a direction away from the agricultural machine.

[0010] The above rotation angle limiting member may have one end installed on the other side opposite to one side of one of the first link member or the second link member facing the agricultural machine, and the other end may be formed to extend toward the other side of the first link member or the second link member so as to be in contact with the other side of the first link member or the second link member.

[0011] The above-mentioned bone-breaking member comprises a base member installed in the suspension unit, and a bone-forming member installed in the base member and extending in the front-back direction, the left-right width increasing as it goes rearward from the front end, and the left-right width decreasing as it goes downward from the top end.

[0012] The above bone forming member is formed so that the length extending downward from the front end to the rear end of the base member increases, and side plates may be provided on the upper left and right sides so as to protrude in a mutually distant direction but extend in the front-back direction.

[0013] The above bone forming member has an internal space that is open at the front, back, and top, and on the lower surface, a cut space that extends a predetermined distance forward from the rear end and is connected to the internal space is formed.

[0014] Meanwhile, the soil drilling device according to the present invention may further include an indicator lamp installed on the drilling member to illuminate the ground in front of the drilling member so that the worker can recognize the location where the drainage groove is to be formed on the ground.

[0015] In addition, the soil drilling device of the present invention may further include at least one spray nozzle installed on the side plate to spray water downward so that the soil of the ground can be hardened when the drainage groove is formed by the drilling member, and a water supply unit that supplies water to the spray nozzle.

[0016] Meanwhile, the bone-breaking device of the present invention may further include at least one inspection nozzle installed in the internal space of the bone-forming member to spray water backward so as to check the drainage state of the drainage bone formed by the bone-breaking member, and a water supply unit that supplies water to the inspection nozzle.

[0017] In addition, the soil digging device of the present invention may further include at least one limiting plate member, the front end of which is installed on the lower surface of the side plate so as to be rotatable up and down so as to interfere with the ground so as to limit the depth of penetration of the bone digging member into the ground, and a rotation unit that rotates the limiting plate member so that the rear end of the limiting plate member is spaced apart from the side plate.

[0018] The soil digging device according to the present invention has a digging member elastically supported on an agricultural machine, so that even if it collides with an obstacle, the digging member does not get caught on the obstacle but moves up and down or left and right to pass through it, thereby preventing the digging member from being damaged by the obstacle.

[0019] Figure 1 is a side view of an agricultural machine having a soil digging device according to the present invention installed thereon.

[0020] Fig. 2 is a perspective view of the soil digging device of Fig. 1,

[0021] Fig. 3 is a cross-sectional view of the soil excavation device of Fig. 1,

[0022] FIG. 4 is a side view of a soil breaking device according to another embodiment of the present invention;

[0023] Figure 5 is a front view of a soil breaking device according to another embodiment of the present invention.

[0024] Figure 6 is a cross-sectional view of a soil breaking device according to another embodiment of the present invention.

[0025] Figure 7 is an operating state diagram of a soil excavation device according to another embodiment of the present invention.

[0026] Hereinafter, a soil drilling device according to an embodiment of the present invention will be described in detail with reference to the attached drawings. The present invention can be modified in various ways and can take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, but it should be understood that the invention includes all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used to indicate similar components. In the attached drawings, the dimensions of structures are shown larger than actual size to ensure clarity of the present invention.

[0027] While terms like "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

[0028] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0030] Figures 1 to 3 illustrate a soil breaking device (100) according to the present invention.

[0031] Referring to the drawing, the above-mentioned soil drilling device (100) comprises a frame (200) installed on an agricultural machine (10) that moves along the ground of a cultivated field, and a drilling member (400) that is supported on the frame (200) by a suspension unit (300) so as to be towed by the agricultural machine (10) and forms a drainage hole in the cultivated field by interfering with the ground.

[0032] Here, the agricultural machine (10) is applied as a direct seeder that discharges fertilizer or seeds onto the cultivated field. The direct seeder is equipped with a main body that is installed at the rear of a passenger vehicle such as a tractor or a transplanter and is towed and moved by the passenger vehicle, a receiving unit that is installed on the main body and receives fertilizer or seeds, and a discharger (20) that sequentially discharges the fertilizer or seeds received in the receiving unit downward in a preset amount. Meanwhile, the agricultural machine (10) is not limited to this, and any agricultural machine (10) that moves along the ground of the cultivated field and cultivates crops can be applied.

[0033] The frame (200) has an attachment block (210) installed on an agricultural machine (10), and a rotation support member (220) installed on the attachment block (210) and on which one end of a first link member (310) of a suspension unit (300) described later is rotatably installed.

[0034] The above attachment block (210) is installed on the side of the agricultural machine (10) and is fixed to the left side of the direct seeder. Here, the attachment block (210) is not limited to this and may be fixed to the right side of the direct seeder. It is preferable that the attachment block (210) be bolted to the agricultural machine (10) so that it can be easily removed.

[0035] The rotation support member (220) is installed on the attachment block (210) and includes a link connecting member (221) in which the upper end of the first link member (310) is installed rotatably, and an interference member (222) formed on the link connecting member (221) so as to interfere with the first link member (310) so that the first link member (310) can be supported at an angle.

[0036] The link connecting body (221) has a first side plate (223) fixed to the left side of the rotation support member (220), a rear plate (224) extending to the left at the rear end of the first side plate (223), and a second side plate (225) extending forward at the left end of the rear plate (224). The upper end of the first link member (310) is rotatably installed with respect to an imaginary center line extending left and right on the first side plate (223) and the second side plate (225). That is, the first link member (310) is rotatably installed between the first side plate (223) and the second side plate (225).

[0037] The interference member (222) is formed protrudingly on the first and second side plates (223, 225) at a position spaced downwardly from one end of the first link member (310) so that the first link member (310) can be supported at an angle so that the other end of the first link member (310) is positioned forward or backward from one end, thereby interfering with the first link member (310). The interference member (222) extends left and right, and is preferably installed at a position spaced downwardly from the center of rotation of the upper end of the first link member (310).

[0038] Meanwhile, in the illustrated example, the first link member (310) is supported at an angle so that the upper end is positioned further back than the lower end by the interference member (222), but this is not limited thereto and the upper end may be supported at an angle so that the lower end is positioned further forward than the lower end. Since the first link member (310) is supported at an angle by the interference member (222) rather than standing upright in the direction of gravity, the bone-digging member (400) can be moved more easily in the vertical direction.

[0039] The suspension unit (300) comprises a first link member (310) that is installed so as to be rotatable in the vertical direction on the frame (200), a second link member (320) that is installed so as to be rotatable in the left and right direction based on the moving direction of the agricultural machine (10) on the other end of the first link member (310) and has the digging member (400) installed on the other end, an elastic unit that provides elastic force to the first link member (310) or the second link member (320) so that the first link member (310) or the second link member (320) returns to its initial position when rotated by the digging member (400) that comes into contact with the obstacle, and a rotation angle limiting member (330) that limits the rotation angle of the second link member (320) with respect to the first link member (310).

[0040] The first link member (310) extends vertically, and its upper end is inserted between the first and second side plates (225) and installed on the link connecting body (221) so as to be rotatable vertically. The second link member (320) extends vertically, and its upper end is installed at the lower end of the first link member (310) so as to be rotatable horizontally. A bone-digging member (400) is installed at the lower end of the second link member (320).

[0041] Although not shown in the drawing, the elastic unit includes a first elastic member installed on the first link member (310) to provide elastic force so that the first link member (310) can rotate downward, and a second elastic member installed on the second link member (320) to provide elastic force so that the second link member (320) can rotate away from the agricultural machine (10), i.e., to the left. The first and second elastic members are applied with torsion springs installed on the first and second link members (310, 320) respectively to provide elastic force, but are not limited thereto. Any elastic force providing means that can provide elastic force so that the first and second link members (310, 320) can return to their initial positions when rotated can be applied.

[0042] The rotation angle limiting member (330) prevents the second link member (320) of the suspension unit (300) from rotating in a direction adjacent to the agricultural machine (10) but from rotating in a direction away from the agricultural machine (10). The rotation angle limiting member (330) is fixed to the left side opposite the right side of the first link member (310) facing the agricultural machine (10), and extends downward adjacent to the left side of the second link member (320) so that an end thereof contacts the left side of the second link member (320). The rotation angle limiting member (330) is formed in a plate shape having a predetermined thickness.

[0043] The rotation angle limiting member (330) is not limited thereto, but may be installed on the left side of the second link member (320) and may be formed to extend upward so that the upper end contacts the left side of the first link member (310). The above-described rotation angle limiting member (330) limits the rotation angle of the second link member (320) to prevent the digging member (400) from moving away from the agricultural machine (10), thereby preventing the drainage hole from being formed in the cultivated field and encroaching on other adjacent cultivated areas.

[0044] The suspension unit (300) configured as described above supports the bone digging member (400) so that it can move a predetermined distance in the up-down or left-right direction, but even if the bone digging member (400) is moved by the elastic unit, it can return to the initial position.

[0045] The bone-digging member (400) comprises a base member (410) installed on the suspension unit (300), and a bone-forming member (420) installed on the base member (410) to interfere with the ground and form a drainage groove.

[0046] The above base member (410) is installed at the lower end of the second link member (320) and is formed in a plate shape with a predetermined thickness. The bone forming member (420) is installed at the lower end of the base member (410).

[0047] The above-mentioned bone forming member (420) is installed on the above-mentioned base member (410), and is formed to extend in the front-back direction, but with a left-right width that increases from the front end to the rear end. In addition, the bone forming member (420) is formed to protrude downward with respect to the base member (410), but with a left-right width that decreases from the upper end to the lower end.

[0048] And the bone formation member (420) is formed so that the length extending downward from the front end to the rear end increases with respect to the base member (410). In addition, the bone formation member (420) has an internal space (421) that is open at the front, back, and top, and an incision space is formed on the lower surface. The incision space extends a predetermined length forward from the rear end of the bone formation member (420). At this time, the incision space is formed in a triangular shape whose left-right width decreases as it goes forward from the rear end of the bone formation member (420).

[0049] Meanwhile, the bone forming member (420) has side plates (423) formed on the upper left and right sides, respectively. The side plates (423) protrude in a direction away from each other and extend in the front-back direction. The side plates (423) are formed in a plate shape having a predetermined thickness. In addition, the bone forming member (420) has an auxiliary steel plate (422) installed at a position spaced forward from the base member (410) so as to reinforce the strength. The auxiliary steel plate (422) extends in the left-right direction, and the left and right ends are fixed to the side plates (423) that face each other, respectively. The bone forming member (420) described above is inserted into the ground to form a drainage groove in the ground when the agricultural machine (10) moves.

[0050] As described above, the soil digging device (100) according to the present invention is configured so that the digging member (400) is elastically supported on the agricultural machine (10), so that even if it collides with an obstacle, the digging member (400) does not get caught on the obstacle but moves up and down or left and right to pass through it, thereby preventing the digging member (400) from being damaged by the obstacle.

[0051] Meanwhile, FIG. 4 illustrates a soil erosion device (500) according to another embodiment of the present invention.

[0052] Elements that have the same function as those in the previously illustrated drawings are indicated with the same reference numerals.

[0053] Referring to the drawing, the above-mentioned soil excavation device (500) is further equipped with an indicator lamp (510) that is installed on the soil excavation member (400) and irradiates an indicator light to the ground in front of the soil excavation member (400) so that the worker can recognize the location where the drainage groove is to be formed on the ground.

[0054] The above-mentioned indicator lamp (510) is installed at the front end of the side plate (423) and irradiates an indicator light to the ground in front of the digging member (400). Although not shown in the drawing, the indicator light preferably has a predetermined color, such as red, and forms a linear shape extending in the forward and backward direction. At this time, the indicator lamp (510) is set so that the indicator light is irradiated to the ground in front of the agricultural machine (10) so that the operator operating the agricultural machine (10) can easily recognize the indicator light.

[0055] As described above, the bone-digging device (500) allows the operator to recognize the location where the drainage groove is to be formed by the indicator light irradiated from the indicator lamp (510), so that the bone-digging member (400) can be positioned more easily at the location where the drainage groove is to be formed.

[0056] Meanwhile, FIG. 5 illustrates a soil erosion device (600) according to another embodiment of the present invention.

[0057] Referring to the drawing, the above-mentioned drainage groove digging device (600) further includes a water spraying unit (610) that sprays water onto the ground so that the soil on the ground can be hardened when the drainage groove is formed by the drainage groove member (400).

[0058] The above water spray unit (610) is installed on the side plate (423) and has a plurality of spray nozzles (611) that spray water downward so that the soil on the ground can be hardened when the drainage groove is formed by the bone digging member (400), and a water supply unit (not shown) that supplies water to the spray nozzles (611).

[0059] The spray nozzles (611) are installed in a plurality of pieces spaced apart from each other in the front-back direction on the side plate (423) and spray water downwards of the side plate (423). Meanwhile, in the example illustrated in the drawing, a structure in which the spray nozzles (611) are installed in a plurality is illustrated, but the present invention is not limited thereto, and three or fewer or five or more spray nozzles (611) may be installed depending on the size of the bone forming member (420).

[0060] Although not shown in the drawing, the water supply unit is installed in the agricultural machine (10) and includes a water tank containing a large amount of water therein, a supply pipe connected to the water tank and the spray nozzle (611), and a supply pump installed in the supply pipe to pump the water contained in the water tank to the spray nozzle (611). Meanwhile, the water supply unit is not limited to this, and any water supply means capable of supplying water to the spray nozzle (611) can be applied.

[0061] As described above, the water spray unit (610) sprays water toward the lower side plate (423), and as the sprayed water dries, the soil in the drainage groove hardens, allowing the drainage groove to maintain its shape more firmly.

[0062] Meanwhile, although not shown in the drawing, the bone formation member (420) is formed with a separation prevention protrusion to prevent it from being separated from the ground. The separation prevention protrusion is formed to protrude on the outer circumferential surface of the front portion of the bone formation member (420) and extends a predetermined length in the front-back direction. At this time, the separation prevention protrusion is formed between the lower end of the bone formation member (420) and the side plate (423), and is preferably formed on the left and right sides of the bone formation member (420). When the bone formation member (420) is inserted into the ground, the separation prevention protrusion interferes with the ground, preventing the bone formation member (420) from being separated from the ground, thereby stably forming a drainage bone.

[0063] Meanwhile, FIG. 6 illustrates a soil erosion device (700) according to another embodiment of the present invention.

[0064] Referring to the drawing, the above-mentioned bone-digging device (700) further includes a water supply unit (710) that supplies water to a drainage groove formed by a bone-digging member (400).

[0065] The above inspection unit (710) is installed in the internal space (421) of the bone forming member (420) and is equipped with an inspection nozzle (711) that sprays water backwards so as to check the drainage state of the drainage bone formed by the bone-digging member (400), and a water supply unit (not shown) that supplies water to the inspection nozzle (711).

[0066] The above inspection nozzle (711) is installed on the bottom surface of the internal space (421) of the bone-forming member (400), and a spray hole (not shown) through which water is sprayed is formed on the rear surface. The water sprayed from the inspection nozzle (711) is drained into the drainage groove through the open rear surface of the bone-forming member (420).

[0067] Although not shown in the drawing, the water supply unit is installed in the agricultural machine (10) and includes a water tank containing a large amount of water therein, a supply pipe connected to the water tank and the inspection nozzle (711), and a supply pump installed in the supply pipe to pump the water contained in the water tank to the spray nozzle (611). At this time, water with a predetermined color pigment dissolved in it may be applied so that the worker can easily recognize the drainage status of the drainage ditch. Meanwhile, the water supply unit is not limited thereto, and any water supply means capable of supplying water to the inspection nozzle (711) may be applied.

[0068] Water sprayed through the inspection nozzle (711) is discharged through the open rear surface of the bone forming member (420) into the drainage groove formed by the bone forming member (420). The water flows along the drainage groove, and the worker can check the drainage condition of the drainage groove through the flow of the water, and quickly identify and work on the part of the drainage groove that requires reinforcement.

[0069] Meanwhile, FIG. 7 illustrates a soil-digging device (800) according to another embodiment of the present invention.

[0070] Referring to the drawing, the above-mentioned soil digging device (800) further includes a depth limiting member (810) for limiting the depth of insertion of the soil digging member (400) into the ground.

[0071] The above depth limiting member (810) comprises a limiting plate member (811) that is installed on the lower surface of the side plate (423) so as to be rotatable up and down so that the front end can interfere with the ground to limit the depth of penetration of the bone digging member (400) into the ground, and a rotation unit (812) that rotates the limiting plate member (811) so that the rear end of the limiting plate member (811) is spaced apart from the side plate (423).

[0072] The limit plate member (811) is formed in a plate shape having a predetermined thickness and extends a predetermined length along the longitudinal direction of the side plate (423). The front end of the limit plate member (811) is rotatably installed on the rear side of the side plate (423). At this time, it is preferable that the front end of the limit plate member (811) is installed at a position spaced a predetermined distance forward from the lower edge of the side plate (423). The above-described limit plate member (811) may be installed on each of the side plates (423) or may be installed on any one of the side plates (423).

[0073] The rotation unit (812) is rotatably connected at the lower end to the rear end of the limit plate member (811), and the upper end is fixed to the rear of the side plate (423), and the length thereof is extended in the vertical direction. The rotation unit (812) is applied with an actuator such as a hydraulic cylinder or a screw jack. Meanwhile, the rotation unit (812) is not limited thereto, and any rotation means capable of rotating the limit plate member (811) may be applied.

[0074] The limit plate member (811) is set at the bottom of the side plate (423), so that when the bone forming member (420) is inserted into the ground, it interferes with the ground. At this time, the worker can change the depth of the drainage groove by operating the rotation unit (812) to move the rear end of the limit plate member (811) downward with respect to the side plate (423) to adjust the insertion depth of the bone forming member (420). Therefore, the worker has the advantage of being able to form a drainage groove of a depth appropriate for the cultivation target area by using the depth limiting member (810).

[0075] The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments disclosed herein, but is to be construed in the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A frame installed on an agricultural machine that moves along the ground of a cultivated field; and A drilling member is provided which is supported on the frame by a suspension unit so that it can be towed by the agricultural machine, and which interferes with the ground to form a drainage hole in the cultivated land; The above suspension unit elastically supports the bone digging member with respect to the frame to prevent the bone digging member from getting caught on an obstacle on the ground when the bone digging member comes into contact with the obstacle. A device for digging a soil hole.

2. In paragraph 1, The above suspension unit First, a first link member is installed so as to be rotatable in the upper and lower directions on the above frame; A second link member, which is installed at the other end of the first link member so as to be rotatable left and right based on the direction of movement of the agricultural machine, and on which the bone digging member is installed at the other end; and An elastic unit that provides elastic force to the first link member or the second link member so that the first link member or the second link member returns to the initial position when rotating by the bone digging member that comes into contact with the obstacle; A device for digging a soil hole.

3. In paragraph 2, The above frame is Attachment block installed on the above agricultural machinery; and A rotation support member is installed on the above attachment block and one end of the first link member is installed so as to be rotatable; The above rotation support member A link connecting body installed on the above attachment block, one end of the first link member being rotatable based on an imaginary center line extending in the left and right directions; and An interference member is provided which is protruded and formed on the link connecting body at a position spaced downward from one end of the first link member so that the first link member is supported at an angle so that the other end of the first link member is positioned forward or backward from the first end, and can interfere with the first link member. A device for digging a soil hole.

4. In paragraph 2, The above-mentioned golf club member is installed on the left or right side of the above-mentioned agricultural machine, The above suspension unit further includes a rotation angle limiting member that allows the second link member to rotate in a direction adjacent to the agricultural machine, but prevents the second link member from rotating in a direction away from the agricultural machine. A device for digging a soil hole.

5. In paragraph 4, The above rotation angle limiting member has one end installed on the other side opposite to one side of one of the first link member or the second link member facing the agricultural machine, and the other end is formed to extend toward the other side of the first link member or the second link member so as to contact the other side of the other of the first link member or the second link member. A device for digging a soil hole.

6. In paragraph 1, The above bone digging member A base member installed in the above suspension unit; and A bone forming member is installed on the above base member and is formed to extend in the front-back direction, with the width increasing from the front end to the rear and the width decreasing from the top to the bottom. A device for digging a soil hole.

7. In paragraph 6, The above bone forming member is formed so that the length extending downward from the front end to the rear end of the base member increases, and side plates are provided on the upper left and right sides so as to protrude in a mutually distant direction, but extend in the front-back direction. A device for digging a soil hole.

8. In paragraph 7, The above bone forming member has an internal space that is open at the front, back, and top, and on the lower surface, a cut space that extends a predetermined distance forward from the rear end and is connected to the internal space is formed. A device for digging a soil hole.

9. In paragraph 1, An indicator lamp is further provided on the above-mentioned bone-digging member to illuminate the ground in front of the bone-digging member so that the worker can recognize the location where the drainage groove is to be formed on the ground; A device for digging a soil hole.

10. In paragraph 7, At least one spray nozzle installed on the side plate to spray water downward so that the soil on the ground can be hardened when the drainage groove is formed by the bone digging member; and Further comprising a water supply unit for supplying water to the above injection nozzle; A device for digging a soil hole.

11. In paragraph 8, At least one inspection nozzle installed in the internal space of the bone forming member and spraying water backward to check the drainage status of the drainage bone formed by the bone digging member; and Further comprising a water supply unit for supplying water to the above inspection nozzle; A device for digging a soil hole.

12. In paragraph 7, At least one limiting plate member having a front end rotatably installed on the lower surface of the side plate so as to be able to interfere with the ground so as to limit the depth of penetration of the bone-digging member into the ground; and Further comprising a rotation unit that rotates the restriction plate member so that the rear end of the restriction plate member is separated from the side plate; A device for digging a soil hole.

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