JP2018201378A - Root vegetable digging-out machine - Google Patents

Abstract

To provide a root vegetable digging-out machine capable of reducing a load of removing soil from a digging-out body by an auxiliary worker by securing a space where soil collapses from the digging-out body, and enabling efficiently performing a root vegetable pulling-out work.SOLUTION: A root vegetable digging-out machine diggs up root vegetables by passing a digging-out body having an inclined plane through lower parts of the root vegetables. A soil-removing plate 9a for moving soil near the above-ground part outside a beam 1g to the lateral outside is provided in left and right outer surface parts above the beam 1g suspending to the left and right of the front part of the digging-out body 3. The root vegetable digging-out machine includes: a first inclined edge provided bilaterally symmetrically by inclining from the beam 1g lateral face in a plane view of the soil-removing plate 9a to the rear outside, and having an outside edge in a rear face view, inclined to the outside toward upward from downward; a horizontal edge part roughly horizontally extended to the outside from the first inclined edge upper end part; and a second inclined edge inclined to the outside toward upward from the outside tip part of the horizontal edge part.SELECTED DRAWING: Figure 1

Description

  The present invention is an agricultural machine that is used by being attached to a tractor, and is attached to a towed machine frame, and has a blade portion whose rear portion is inclined upward at a front end portion, and is driven by the rear portion of the blade portion. The present invention relates to an improvement of a long-vegetable root vegetable digging machine in which a digging body provided with an endless conveyor belt is passed through a lower portion of a planted long-rooted vegetable and the long vegetable and other root vegetables are lifted and dug.

  Long roots and other root vegetable diggers loosen the soil at the excavation section, lift the root vegetables with the digging body, and then drop the soil lifted by the landslide means and auxiliary workers to the side of the digger. Thus, after the root vegetables are exposed, the auxiliary worker pulls out the root vegetables and performs the harvesting work, which is a series of steps of the root vegetable digging work. Conventionally, as such a digging machine, a “digger for root vegetables” disclosed in Japanese Patent Laid-Open No. 2000-139151 (Patent Document 1) and a “long digging device” disclosed in Japanese Patent Laid-Open No. 2008-29230 (Patent Document 2). "Root vegetable digger" disclosed in Japanese Patent Laid-Open No. 2016-214089 (Patent Document 3).

  The “digger for root vegetables” disclosed in Patent Document 1 is “a base frame attached to a tractor and a base frame with a support bar interposed therebetween so that the front portion is positioned below the rear portion with respect to the support bar. And is provided with a conveyor belt that has a blade portion at the tip and is stretched across the front and back, and a digging body that is provided with a drive pulley that can drive the conveyor belt. A rooting machine for root vegetables and the like that is capable of idling only in a direction in which the upper surface of the conveyor belt rotates rearward. Further, the “long digging device” disclosed in Patent Document 2 is attached to the lower part of the base frame to be pulled by being connected to the rear part of the tractor, the front part forms a blade part, and the rear part is inclined upward. In the long digging apparatus having a digging blade body composed of an endless power belt conveyor, a diaphragm swinging mechanism for swinging the diaphragm up and down is provided at the rear of the endless power belt conveyor, and the digging is performed. A long digging device characterized in that the cultivated soil adhering to the long one dug up by the blade is shaken off. " Furthermore, the “root crop excavator” disclosed in Patent Document 3 is “the digging body roller is held on a conveyor side plate standing on the left and right of the belt conveyor, and includes a front end roller or a front end roller. The plurality of rollers on the front side are held by a front side plate separate from the conveyor side plate that holds the rollers on the rear side, and the front side plate is centered on the rear side of the front side plate with respect to the conveyor side plate. A root vegetable digger that can be rotated in the vertical direction, and oil supply to the sliding portion of the roller is supplied via a lubricant channel provided in the front side plate. Take-off machine.

The root vegetable digging machine that passes the lower part of the root vegetable planted with the inclined digging body driven at the rear of the blade part and lifts the root vegetable and digs it is the digging body behind the digging machine with soil and root vegetables. The digging work can be carried out by raising the roots and extracting the root vegetables by the auxiliary worker.
For this reason, the excavator such as root vegetables of Patent Document 1 is provided with an endless belt conveyor that is driven rearward in the traveling direction. Further, the long digging apparatus of Patent Document 2 is configured to provide a vibration plate swinging mechanism that swings the vibration plate up and down at the rear of the endless belt conveyor so as to shake off the soil mass adhering to the long length. Furthermore, the root vegetable digger of Patent Document 3 is provided with a mechanism that can keep driving resistance low even when a high earth pressure acts on an endless belt conveyor and can easily remove even when sand or the like enters.

  The soil that has been lifted up by the digging body collapses from the side of the digging body to the ground surface, but in order to secure a space to collapse, the soil excavated by the excavation part and discharged from the ground or to the side of the digging body A soil discharging board for extruding the collapsed soil to the outside is shown and disclosed in FIG. 1 of Patent Document 1 and FIGS. 1, 3 and 4 of Patent Document 3.

JP 2000-139151 A JP 2008-29230 A JP 2016-214089 A

  However, since the earth removing plate is a rear view, the outer edge is composed of only a single straight inclined edge that is inclined outward from the lower side to the upper side. On the soil in the lower valley formed by scraping with a plate, the soil collapsed from the left and right sides of the soil raised by the digging body, and the soil that was moved to the left and right outside with the drainage plate and accumulated in a mountain shape Both soils that have fallen from the slopes accumulate. If a large amount of accumulated soil is piled up on the ground surface outside the digging body at an early stage, the accumulated soil will be blocked by the accumulated soil, and the root vegetable will be exposed to the soil that has been raised above the digging body. Hateful. If the root vegetables are exposed little, the auxiliary worker pulls out the root vegetables after scraping the soil around the root vegetables in a large amount, so the operation until the root vegetables are pulled out increases and the labor becomes large.

  From this, the object of the present invention is to discharge the mountain-shaped soil to the outside on the ground surface outside the digging body generated when the excavation part and the digging body pass, and the soil on the digging body from the side. A root vegetable digging machine that helps auxiliary workers to efficiently extract root vegetables by securing a crumbling space on the ground surface, making the soil raised by the digging body easy to collapse left and right, making it easier to expose root vegetables. The purpose is to provide.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a root vegetable digging machine that makes a digging body having an inclined surface pass through a lower part of a root vegetable such as a long potato and lifts the root vegetable to dig up, The digging body comprises a belt conveyor section having a rearwardly inclined blade part provided at the front part, and an inclined surface extending from the rear end part of the blade part to the rear side and the upper surface rising from the front side to the rear side. A beam that hangs in the vertical direction on the left and right of the front part of the belt conveyor unit, and on the left and right outer surface parts of the upper part of the beam, there is a soil discharge plate that moves the soil in the vicinity of the ground part outside the beam to the lateral outer side. In the working state, the earth removal plate is provided to be inclined leftward and rightward from the side surface of the planar view beam, and the outer edge is outwardly extended from the bottom to the top. 1st inclined to A slanted edge, a horizontal edge extending substantially horizontally from the upper end of the first slanted edge, and a slanting outward as it extends upward from the outer front end of the horizontal edge. It is the root vegetable digger characterized by including the 2nd inclined edge which has.

  In order to solve the above-mentioned problem, the invention according to claim 2 is the root vegetable digger according to claim 1, wherein the horizontal edge portion includes a scooping portion inclined forward. is there.

  Furthermore, in order to solve the above-mentioned problem, the invention according to claim 3 is characterized in that the earth discharging plate includes a first earth discharging plate having a first inclined edge, a horizontal edge and a second edge. The root vegetable according to claim 1, wherein the second soil discharge plate is adjustable in the left-right direction with respect to the first soil discharge plate. It is a digger.

  According to this invention, the soil removal plate pushes out the soil accumulated on the ground surface outside the digging body to the side, and at the same time, a flat surface is formed at the horizontal edge portion of the soil removal plate, and the flat portion is outside. By damming the soil that collapses from the inclined surface, the amount of space where the soil raised by the digging body collapses is secured. Since the side of the soil raised by the digging body can be largely crushed and dropped to the ground surface, the amount of root vegetables exposed increases, and there is no need to remove the soil raised by the digging body by an auxiliary worker. Therefore, it becomes possible to greatly expose the root vegetables raised by the digging body, and the labor required for the extraction work by the auxiliary worker can be greatly reduced.

It is a side view of the advancing direction left side of the working state of the root vegetable digger of the Example of this invention. It is a top view of the working state of the root vegetable digger of the Example of this invention. It is a rear view of the working state of the root vegetable digger of the Example of this invention. It is the top view which carried out the cross section of the conveyor drive part of the root vegetable digger of the Example of this invention. It is a principal part side view of the advancing direction left side of the earth discharging board of the Example of this invention. It is the side view which carried out the cross section of the scooping part of the horizontal edge part of the earth discharging board of the Example of this invention. It is explanatory drawing of the state which excluded the soil with the conventional earth discharging board. It is explanatory drawing of the state which excluded the soil with the earth discharging board of this invention. It is a principal part side view of the advancing direction left side of the another Example which integrated the 1st earth discharging board and the 2nd earth discharging board of the earth discharging board of this invention. It is the principal part side view of the advancing direction left side of another Example which provided the scooping part of a horizontal edge part by integrating the 1st earth discharging board and the 2nd earth discharging board of the earth discharging board of this invention.

  One embodiment will be described with reference to FIGS. At the rear of the tractor (not shown), which is a traveling work vehicle, is provided with a three-point link mechanism, which is a lifting link, and is connected to the mounting portion at the front part of the root vegetable digger of the present invention so as to be freely raised and lowered. It is driven by the power output from the tractor side. In the description of this example, the left side shown in FIG.

  The machine frame 1 holding the machine body is formed in a state where the plate-like bodies are opposed to each other on the left and right. A round bar-like frame fixed between the plate-like bodies at the front end of the machine frame 1 and provided with lower link pins 1f at the left and right tip portions connects and fixes the plate-like body. The bracket 1b is projected upward.

  A mast frame 1 a is provided in the front part of the machine casing 1. The mast frame 1a is formed of a plate-like body and is connected to the machine frame 1 in a state of facing left and right. The base, which is the lower end of the mast frame 1a, is held by a rotating shaft 1c in the vicinity of the round bar-like frame provided with the lower link pin 1f of the machine frame 1 so as to be able to rotate back and forth, and in front of the upper end of the mast frame 1a. The top link pin 1e is provided horizontally in the left-right direction. The rear of the mast frame 1a is connected to one end of the hydraulic cylinder 1d, and the other end of the hydraulic cylinder 1d is connected to a bracket 1b provided at the rear portion of the machine casing 1. Then, the top link pin 1e and the lower link pin 1f provided on the machine frame 1 are attached to a three-point link mechanism which is a lift link of the tractor. Therefore, by extending and contracting the hydraulic cylinder 1d, the rear side of the machine casing 1 can be turned up and down around the turning shaft 1c. When the hydraulic cylinder 1d is contracted, the excavating part 2 and the digging body 3 are rotated rearward and are moved up.

  In the machine frame 1, an excavation section 2 and a beam 1g are extended downward and provided in pairs. The excavation part 2 is located in front of the beam 1g, and excavates the soil on the left and right sides of the root vegetables such as long potatoes to be dug up. A digging body 3 to be described later is provided at the lower end of the beam 1g.

  The excavation part 2 is provided in the machine casing 1 downward. The excavation part 2 is located in the soil when the root vegetable digger is in a state of digging work, and excavates the soil on the left and right sides of the root vegetables such as long potatoes to be digged up so that the root vegetables and the surrounding soil are easily raised . The excavation unit 2 includes a boom 2a and an excavation chain 20 wound around the boom 2a. The excavation chain 20 includes a roller chain 2e and a plurality of excavation blades 2f attached to the outer periphery thereof. The excavation chain 20 has a triangular shape in side view on a drive sprocket 2b provided at the base of the boom 2a on the machine frame 1 side, a tension sprocket 2c provided at the other end, and an idler sprocket 2d provided in front of an intermediate portion of the boom 2a. It is wound in a shape. The booms 2a are opposed to the left and right in the direction of travel, and their upper ends are fixed to the rear side of the machine casing 1, respectively. Therefore, the excavation chain 20 is provided in each opposing boom 2a, and at the time of digging work, the root chain such as a long potato to be excavated is positioned between the opposing booms 2a, and the excavated chain 20 stretched up and down is moved up and down. By driving, the soil on the left and right sides of the root vegetable to be dug up can be scraped up and down and loosened. The tip side of the boom 2a can be extended and contracted in the length direction, and the tension of the excavation chain 20 can be adjusted. Moreover, the upper part of the excavation part 2 exposed from the soil during the excavation work is covered with an excavation part cover 7. Furthermore, side guards 7a and rear guards 7b formed of round pipes are provided on the left and right sides and the rear side, so that the safety of accidents caused by the operator's contact with or being caught in the movable part of the excavation part 2 is prevented. ing.

  Behind the excavation chain 20 of the excavation part 2, a beam 1g is provided in the vicinity of the excavation chain 20 so as to extend downward from the rear side of the machine frame 1 so as to be opposed to the left and right. Provided in position. The lower end of the beam 1g extends to the vicinity of the lower end of the excavation chain 20. The beam 1g has a strip shape that is long in the vertical direction, and its upper portion is fixed to the machine frame 1 with the thickness edge facing in the traveling direction. That is, the positional relationship between the boom 2a and the beam 1g is fixed.

  The digging body 3 is attached to the lower end of the beam 1g. The digging body 3 is a digging body main body that includes a blade portion 3d that is inclined upward at the front portion, has an inclined surface that extends from the rear end portion of the blade portion to the rear side and rises from the front to the rear. A certain belt conveyor 3a is provided.

  The digging body 3 is provided between the beams 1g located on the left and right sides, and is attached to the beam 1g by fixing the vicinity of the blade portion 3d. The digging body 3 at the time of the digging work passes through the lower part of the root vegetables such as long potatoes to be digged, and is excavated by the digging part 2 and the soil around the inner root vegetables where the soil on the left and right sides is softened. The soil and root vegetables are moved on the inclined surface of the belt conveyor 3a, and the root vegetables are lifted upward.

  The blade part 3d is made of a steel plate and is provided approximately the same as the width of the belt conveyor 3a, and cuts the soil in the lower part of the root vegetables as the tractor advances.

In the belt conveyor 3a, a driving roller 3b having a large side view diameter is positioned on the rear end side, and a plurality of support rollers having a smaller diameter than the driving roller 3b are disposed on the rear side from the front end portion on the blade portion 3d side. It is comprised so that the upper surface of the winding bell conveyor 3a may become a back upward inclination. The belt conveyor 3a is rotationally driven through a roller driving gear case 3c by a conveyor driving hydraulic motor 3e provided in the digging body 3 with a driving roller 3b, and the inclined surface of the upper surface of the belt conveyor 3a moves from the front side to the rear side. To be driven. The driving roller 3b of the belt conveyor 3a and the support roller that supports the belt conveyor 3a are rotatably held by conveyor side plates 3f that are erected on the left and right sides of the belt conveyor 3a.
By the driven belt conveyor 3a, an auxiliary worker can grasp and pull out the root of the root vegetable that has floated on the ground surface.

  On the rear side of the upper part of the intermediate position between the left and right beams 1g, a landslide means 8 is provided. The soil crushing means 8 is for eroding the soil left and right from the root vegetables and soil that have risen by the digging body 3 to expose the upper end portion of the root vegetables. The landslide means 8 includes a plurality of round bar-shaped scraping bars arranged in a straight line at intervals in the traveling direction, and the lower part swings in a direction perpendicular to the traveling direction around the upper part to dig the soil. Dispose to the side of the body 3.

  On the left and right outer surfaces of the upper part of the beam 1g, there are provided earth removal plates for moving the soil in the vicinity of the ground part outside the beam 1g to the lateral outer side. The earth removing plate in this example is divided and configured by a first earth removing plate 9a attached to the beam 1g and a second earth removing plate 9c attached to the first earth removing plate 9a, and the earth removing plate in the working state. As shown in FIG. 2, it is provided to be inclined left and right symmetrically from the side surface of the planar view beam 1 g, and as shown in FIG. 3, as viewed from the rear side, on the outside of the first earth discharging plate 9 a. The end edge includes a first inclined end edge portion 9b that is inclined outwardly from the bottom toward the top. Further, a scooping portion 9d extending substantially horizontally outward from the middle portion of the first inclined end edge 9b of the first earth discharging plate 9a and inclined forward is provided on the front surface of the first earth discharging plate 9a. A second earth discharging plate 9c having a horizontal end edge 9e and a second inclined end edge 9f that inclines outwardly from the outer front end of the horizontal end edge 9e is fixed. . The second earth discharging plate 9c may be provided on the rear surface of the first earth discharging plate 9a.

  FIG. 5 is composed of a first earth discharging plate 9a having a first inclined end edge portion 9b, a second earth discharging plate 9c having a horizontal end edge portion 9e and a second inclined end edge portion 9f. The earth removal board 9c shows the left side surface of the main part of the earth removal board of the present invention divided and provided so as to be position-adjustable in the left-right direction with respect to the first earth removal plate 9a.

  At the first inclined edge portion 9b of the first earth removing plate 9a, the corners of the outer ground surface immediately above the excavated portion 2 and the digging body 3 are scraped off, and at the same time, the outer surface is inclined toward the rear outer side in plan view. Move the scraped soil.

  Further, the horizontal edge portion 9e of the second earth removing plate 9c is used to horizontally cut the soil on the ground surface, level the ground surface evenly, and at the same time, the horizontal edge portion 9e is inclined toward the rear outside in plan view. And the soil sent out by the first inclined edge 9b are moved outward.

  Further, the second inclined edge portion 9f is moved along the second inclined edge portion 9f along the first inclined edge portion 9f and the soil that has moved from the inside to the outside of the earth discharging plate 9a along the horizontal edge portion 9e. So that the soil is discharged outside while tilting outward.

Here, a state where the soil during the digging operation moves will be described with reference to FIGS. 7 and 8.
FIG. 7 shows a soil cross section from the rear when a conventional earth discharging board is used. When using a conventional soil removal board composed of a single straight inclined edge, the soil collapsed from the left and right sides of the soil raised by the digging body 3 and a single straight line outside the soil removal board Both soils falling from the soil slope formed by the slanted edge are buried in the lower valley B formed by the single straight slope edge, and the soil is piled up early. The accumulated soil blocks the flow of the soil on the digging body 3 from falling from the side of the digging body, so that the soil does not fall from the digging body 3 and the root vegetables are hardly exposed.

  FIG. 6 shows a soil section in the case of using the earth discharging board composed of the first earth discharging plate 9a and the second earth discharging plate 9c of the present invention. The soil that has risen by the digging body 3 collapses into the lower valley B formed by the first inclined end edge 9b of the first earth removing plate 9a. When the soil collapsed from the sloped portion of the soil formed by the second inclined edge portion 9f of the second earth discharging plate 9c to the digging body side, it was formed by the horizontal edge portion 9e of the second earth discharging plate 9c. It is blocked by the flat part C.

  That is, in the space formed by the first inclined edge portion 9b, the soil formed by the horizontal edge portion 9b of the first earth discharging plate 9a and the second inclined edge portion 9f of the second earth discharging plate 9c. Since it does not collapse, a space where the soil raised by the digging body 3 collapses can be secured, and a large amount of soil on the digging body 3 can be crushed. By breaking down a lot of soil on the digging body 3, the exposed area of the root vegetables A can be increased, so that an auxiliary worker can easily grasp and pull out the head of the root vegetables A.

  In addition, as shown in FIG. 5, a plurality of holes are provided in the mounting of the second earth discharging plate 9c, and holes are selected in the left and right direction with respect to the first earth discharging plate 9a, and are fixed using a screw. By doing so, the position can be adjusted in the left-right direction. In the case of this example, the second earth removing plate 9c is provided with holes for position adjustment of the inner hole 9g, the intermediate hole 9h, and the outer hole 9i, and FIG. 5 shows a state in which the intermediate hole 9h is used. The position adjusting hole of the second earth discharging plate 9c may be provided in a long hole shape so that the position can be adjusted left and right.

If the soil is discharged further outward by adjusting the width of the second earth discharging plate 9c and the horizontal flat portion C formed by the horizontal edge 9e of the second earth discharging plate 9c is wide, the second earth discharging plate. The soil collapsed from the inclined portion formed at the left and right ends of 9c can be dammed up more by the flat portion C formed by the horizontal end edge portion 9e of the second earth discharging plate 9c. The collapsed soil is dammed up by the widely formed flat portion C, so that the soil is reduced from falling into the space of the lower valley portion B formed by the first inclined edge 9b, and is raised by the digging body 3. A large space can be secured in the lower valley B where the soil collapses from the side.
Furthermore, by adjusting the second earth discharging plate 9c to the left and right, it is possible to adjust according to the respective conditions that vary depending on the soil quality, soil moisture, and the like, and it is possible to cope with many root vegetable cultivation regions. .

FIG. 8 is a cross-sectional view of a state in which a scooping portion 9d is provided on the horizontal end edge portion 9e of the second earth discharging plate 9c.
In the case of this example, the scooping angle 9j of the scooping part 9d is provided at 40 degrees. The narrow angle 9j is preferably set to about 30 to 50 degrees. By providing the scooping portion 9d, the soil is scraped up and the extrusion resistance is reduced, and the soil is efficiently discharged to the left and right outer sides.

  FIG. 9 is a left side view of an essential part of another embodiment of the earth discharging board in which the first earth discharging board and the second earth discharging board are integrated, and FIG. 10 is the first earth discharging plate and the second earth discharging plate. It is the principal part left side surface of another Example of the earth-removing board which integrated | integrated and also provided the scooping part 11d in the horizontal edge part 11c. In either case, the soil removal effect similar to the present invention can be obtained.

  The state shown in FIG. 1 shows the attitude of the digging work state, and in the case of this example, the digging body 3 is located at a depth of about 1.2 m underground. When the digger is moved by the tractor, the hydraulic cylinder 1d is contracted so that the rear side of the machine frame 1 rotates counterclockwise from the state of FIG. 1 about the rotation shaft 1c. As a result, the lower part of the excavation part 2 and the digging body 3 fixed to the rear side of the machine frame 1 rotate and rise. Furthermore, when the three-point link mechanism that is the lifting link of the tractor is raised, the lower part of the excavation part 2 and the digging body 3 can be moved by a tractor or the like mounted on the ground.

  An input gear case 5b to which power from the tractor is input is provided at the center of the machine casing 1. An input shaft 5c is provided in front of the input gear case 5b so as to protrude forward, and a power from the tractor is input by connecting a PTO shaft (not shown) of the tractor and the input shaft 5c with a universal joint or the like. On the input gear case 5b, output shafts protrude from the left and right in the direction orthogonal to the input shaft 5c, and the drive sprockets 2b are fixed to the input gear case 5b. The excavation chain 20 of the excavation unit 2 is wound around the drive sprocket 2b, and the excavation chain 20 is driven by the power input to the input shaft 5c. A hydraulic pump 5a is provided on the input gear case 5b. A roller chain is wound around a sprocket fixed to the input shaft 5c and a sprocket fixed to the input shaft of the hydraulic pump 5a to drive the hydraulic pump 5a. . The hydraulic pressure generated by the hydraulic pump 5a is sent to the conveyor drive hydraulic motor 3e of the digging body 3 through the piping, and the hydraulic motor is driven. When the conveyor drive hydraulic motor 3e is driven, the drive roller 3b of the belt conveyor 3a of the digging body 3 rotates to operate the belt conveyor 3a. An output portion for driving the landslide means 8 is provided behind the input gear case 5b to drive the landslide means 8. The hydraulic cylinder 1d for rotating the machine casing 1 is provided with a valve on the tractor side and is operated by the hydraulic pressure on the tractor side.

  A method for performing a digging operation by using a root vegetable digger such as a long potato according to an embodiment of the present invention will be described. Lower link pins 1f provided on the front left and right sides of the machine frame 1 are connected to the lower links of the three-point link mechanism of the tractor, and top link pins 1e located on the front side of the mast frame 1a provided on the upper front part of the machine frame 1 are connected. A digger is attached to the tractor by connecting to the top link of the three-point link mechanism of the tractor. A power transmission shaft such as a universal joint is connected to the PTO shaft of the tractor and the input shaft 5c of the input gear case 5b so that power from the tractor can be input.

  The root vegetables A such as long potatoes to be digged are placed in a state where the tractor is straddled over the vines, that is, the root vegetables are positioned so as to be located in the central part of the right and left excavation chains 20 of the excavation part 2. The belt conveyor 3a of the excavation part 2 and the digging body 3 is driven. Then, when the hydraulic cylinder 1d is extended by operating the valve provided on the tractor side, the machine frame 1 rotates clockwise in the state shown in FIG. 1, and the excavation part 2 fixed to this is excavated. Body 3 goes into the ground. When the blade part 3d in front of the digging body 3 is positioned below the digging target root vegetable, the tractor is advanced to start the digging work.

  As the tractor moves forward, the excavation unit 2 excavates the left and right sides of the root vegetables to loosen the soil. And the soil located inside the right and left excavation chains 20 is placed on the inclined surface of the belt conveyor 3a of the digging body 3 located behind the excavation part 2, and moves backward together with the root vegetables A. The soil and root vegetables A are lifted upward along the inclined surface of the belt conveyor 3a. The root vegetable A is exposed when the soil raised by the digging body 3 collapses from the side. Then, the auxiliary worker grasps the head of the exposed root vegetable A and pulls out the root vegetable A.

  At this time, the soil on the upper surface of the ground on the left and right sides of the excavation part 2 is shaved by the first inclined edge 9b that is inclined outwardly from the lower rear side of the first earth discharging plate 9a toward the upper side. Is pushed outward in the direction inclined toward the rear rear side of the earth removal plate 9a. Further, the horizontal edge 9e of the second earth discharging plate 9c moves the soil that has moved from the first inclined edge 9b to the second inclined edge 9e, while leveling the upper surface of the ground flatly to remove excess soil. Move outward. The soil that has moved outward from the beam 1g side of the earth discharging plate at the second inclined edge 9f at the tip of the second earth discharging plate 9c is discharged in a mountain shape to the outside of the second earth discharging plate 9c. . Since a lot of soil collapses from the side of the digging body 3 in the lower trough B of the space scraped by the first inclined edge 9b of the first earth discharging plate 9a, root vegetables A can increase the exposure, The auxiliary worker easily grasps and pulls out the root of the root vegetable A.

  In the case of this example, the excavation part 2 is provided in front of the digging body 3, but the present invention can be implemented even if the excavator is not necessarily provided with the excavation part 2. Furthermore, in the case of this example, the driven belt conveyor 3a is provided, but the present invention can be implemented even if the root vegetable digger is not necessarily provided with the driven belt conveyor 3a.

  The present invention can be applied to a digger that is mounted behind a traveling machine such as a tractor for digging long roots and other root vegetables.

DESCRIPTION OF SYMBOLS 1 Machine frame 1a Mast frame 1b Bracket 1c Rotating shaft 1d Hydraulic cylinder 1e Top link pin 1f Lower link pin 1g Beam 2 Excavation part 20 Excavation chain 2a Boom 2b Drive sprocket 2c Tension sprocket 2d Idler sprocket 2e Roller chain 2f Excavation blade 3 Digging Handle 3a Belt conveyor 3b Driving roller 3c Roller driving gear case 3d Blade portion 3e Hydraulic motor 3f Conveyor side plate 5a Hydraulic pump 5b Input gear case 5c Input shaft 7 Excavating portion cover 7a Side guard 7b Rear guard 8 Land breaking means 9a First earth discharging plate 9b First inclined edge portion 9c Second earth discharging plate 9d Scooping portion 9e Horizontal edge portion 9f Second inclined edge portion 9g Inner hole 9h Intermediate hole 9i Outer hole 9j Earthing angle 10a Earth discharging plate 10b First inclined edge portion 10c Horizontal edge 10d No. Inclined edge portion 11a a blade 11b first inclined end edge 11c horizontal edge 11d scooping portion 11e second inclined edge portion A root B lower valley portion C flats

Claims (3)

It is a root vegetable digger that passes a digging body having an inclined surface to the lower part of a root vegetable such as a long one to lift the root vegetable and dig it up,
The digging body comprises a belt conveyor section having a rearwardly inclined blade part provided at the front part, and an inclined surface extending from the rear end part of the blade part to the rear side and the upper surface rising from the front side to the rear side. Prepared,
A beam that hangs in the vertical direction is provided to the left and right of the front part of the belt conveyor unit, and left and right outer surface parts of the upper part of the beam are provided with earth removing plates that move the soil near the ground part outside the beam to the lateral outside. And
In the working state, the earth removal plate is provided symmetrically by inclining from the side surface of the beam in the plan view toward the rear outer side, and when viewed from the rear side, the outer edge is inclined outward from the lower side to the upper side. A first inclined edge, a horizontal edge extending substantially horizontally outward from the upper end of the first inclined edge, and an outer edge inclined upward from the outer tip of the horizontal edge. A root crop excavator characterized by comprising a second inclined edge.   The root vegetable digger according to claim 1, wherein the horizontal edge portion includes a scooping portion inclined forward.   The earth discharging plate is composed of a first earth discharging plate having a first inclined edge, and a second earth discharging plate having a horizontal edge and a second edge, and the second earth discharging plate is a first earth discharging plate. The root vegetable digger according to any one of claims 1 and 2, wherein the position can be adjusted in the left-right direction with respect to the earth removing board.

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