JP2018191609A - Root vegetable digging machine - Google Patents

Abstract

To provide a root vegetable digging machine such as yams in which extraction work of an auxiliary worker is made easily and efficiently.SOLUTION: A root vegetable digging machine is provided in which a digging-out body 3 is made to pass in the lower part of root vegetables for digging-up. In the root vegetable digging machine, the digging-out body 3 includes a blade part 3d having a rear-up slope in the front part, a belt conveyor 3a having a slope from the rear end of the blade part 3d toward the rear side upward, and an elastic board 4a extended toward the rear in a cantilever manner at the rear end of the belt conveyor 3a. In the root vegetable digging machine such as yams, the elastic board 4a is provided so that the root vegetables such as the yams are not made to suddenly sink in a space where the digging-out body passes, and therefore the root vegetables such as the yams can be dug out easily.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 machine frame to be pulled, and has a blade portion whose rear portion is inclined upward at a front end portion, and is driven by a rear portion of the blade portion. The present invention relates to an improvement in a root crop digging machine such as a long potato that is digged by passing a digging body provided with an endless belt conveyer through a lower part such as a long potato planted and floating a root crop such as a long potato.

  A long-died root vegetable digger is required to dig efficiently and smoothly without damaging the root vegetables. 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). Is disclosed.

  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 spans back and forth, 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, which 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. "

JP 2000-139151 A JP 2008-29230 A

  The digging body provided with an inclined endless belt conveyor driven at the rear part of the blade part is passed through the lower part of the planted long potato, etc., and the root vegetables such as the long potatoes are lifted up and digging up the long vegetables such as the long potato. The machine is required to dig smoothly without damaging the root vegetables. In addition, the working efficiency is improved by allowing the auxiliary worker to smoothly remove the root vegetables raised by the digging body. 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. However, after the endless belt conveyor and the extension plate provided at the rear of the endless belt conveyor pass, the root vegetables such as long potatoes that floated together with the soil abruptly sink to the original position, and the root vegetables such as long potatoes are again pressed against the soil. As a result, it was difficult for the assistant workers to remove the root vegetables such as long ones smoothly. If the root vegetables such as long potatoes that have been dug and the sudden settlement of the soil can be prevented, the time until the auxiliary worker collects the root vegetables such as long digs that have been dug can be greatly extended, so the collection work of the auxiliary workers will not be delayed. It can be easily and efficiently extracted.

  From this, the object of the present invention is to prevent root vegetables such as long potatoes generated after passing through the excavated body provided with a belt conveyor and abrupt settlement of the soil, long auxiliaries can be extracted easily and efficiently, etc. It aims to provide a root vegetable digger.

In order to solve the above-mentioned problem, the invention according to claim 1 is a root crop digging machine such as a long potato that digs by passing a digging body through a lower part of a root crop such as a long chopstick to lift up a root crop such as a long crop. And
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 root crop digging machine such as a long rice cake is provided with an elastic plate extending rearward in a cantilever manner so as to extend the inclined surface of the belt conveyor section at the rear end portion of the belt conveyor section It is.

Further, in order to solve the above-mentioned problem, the invention according to claim 2 is directed to a root crop digging machine such as a long potato that makes a digging body pass through a lower part of a root crop such as a long potato and lifts the root crop such as a long potato. Because
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,
An extension plate is provided at the rear end portion of the belt conveyor so as to extend the inclined surface of the belt conveyor, and an elastic plate is attached to the extension plate in a cantilevered manner, and the other end portion is extended rearward. It is a root crop digging machine such as a long potato characterized by being.

  Furthermore, in order to solve the above-mentioned problem, the invention according to claim 3 is characterized in that the extension plate is provided so as to be swingable to the left or right or up and down with respect to the inclined surface of the belt conveyor. 2. A root vegetable digger such as a long potato described in 2.

  According to the present invention, the soil excavated by the elastic plate extended at the rear end of the belt conveyer after the digging body is passed through the lower part of the root vegetable such as a long one and the root vegetable such as the long one is lifted. Since it does not sink suddenly and collapses gently, the auxiliary worker can easily work without losing the root vegetables such as long ones.

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 root vegetable digger of the Example of this invention. It is a front view of the root vegetable digger of the Example of this invention. It is the principal part top view which the cross section of the belt conveyor drive part of this invention crossed. It is a principal part left side view of the elastic board of the conveyor rear part of the Example of this invention. It is the rear view which carried out the partial cross section of the elastic board of the conveyor rear part of the Example of this invention. It is a left side view of the state which provided the extension board of the conveyor rear part of this invention. It is a left side view of the state which provided the rocking | fluctuation plate of the conveyor rear part of this invention. It is a rear view of the state which provided the rocking | swiveling plate of the conveyor rear part of this invention. It is the principal part top view which carried out the cross section of the conveyor drive part of the state which provided the rocking | fluctuation plate of this invention, and the rocking | fluctuation plate drive part.

  One embodiment will be described with reference to FIGS. 1 to 3 show the appearance of the working posture of the root vegetable digger of the present invention. 1 is a left side view of the traveling direction, FIG. 2 is a plan view, and FIG. 3 is a front view. 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. 1 will be described as the front side in the traveling direction.

  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 unit 2 is located in the soil when the root vegetable digger is in a digging work state, and excavates the soil on the left and right sides of the root vegetable such as a long potato to be digged to facilitate lifting of the root vegetable and the surrounding soil. 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 and an elastic plate 4a are provided at the rear end of the belt conveyor 3a so as to extend the inclined surface having a plane portion approximately the same as the width of the belt conveyor 3a.

  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 surfaces of the belt conveyor 3a and the elastic plate 4a, 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 diameter smaller than that of the driving roller 3b are disposed on the rear side from the front end portion on the blade portion 3d side, and the belt is wound around the belt conveyor 3a. The top surface of the bell conveyor 3a is configured to have an upward slope. The belt conveyor 3a is driven to rotate by a conveyor drive hydraulic motor 3e provided with a driving roller 3b in the digging body 3, so that the inclined surface of the upper surface of the belt conveyor 3a moves from the front side to the rear side. 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.

  The elastic plate 4a shown in FIG. 5 and FIG. 6 has a pressing member 4c that attaches the front end of the elastic plate 4a to the support 4b that is attached to the left and right of the rear side of the conveyor side plate 3f at the rear end of the belt conveyor 3a. It is attached in a cantilever shape so that the rear side is a free end. The elastic plate 4a has a flat portion approximately the same as the width of the belt conveyor 3a, and extends rearward in a cantilever manner so as to extend the inclined surface of the belt conveyor 3a. The rear end side of the elastic plate 4a is bent to the lower side of the belt conveyor 3a due to elasticity, so that the soil and root vegetables A drastically fall into the space below the belt conveyor 3a. Since the root vegetables A do not fall or break due to a sudden drop, the auxiliary worker can grasp the head of the root vegetables A lifted by the belt conveyor 3a and easily pull it out.

In FIG. 7, an elastic plate 4a is provided at the rear end of the extension plate 4d provided to extend the inclined surface of the belt conveyor 3a at the rear end of the belt conveyor 3a. The extension plate 4d has an inclined surface that extends the inclined surface of the belt conveyor 3a, and is attached to the left and right sides of the rear side of the conveyor side plate 3f. By providing the extension plate 4d, the inclined surface of the belt conveyor 3a is extended, and the root vegetables A lifted by the belt conveyor 3a are further raised.
At the rear end portion of the inclined surface of the extension plate 4d, the front end portion of the elastic plate 4a is sandwiched by the pressing member 4c so as to be cantilevered so that the rear side becomes a free end. The elastic plate 4a has a flat portion approximately the same as the width of the belt conveyor 3a, and extends rearward in a cantilever manner so as to extend the inclined surface of the belt conveyor 3a.

FIGS. 8 and 9 show an example in which the left and right ends of the extension plate 4d are provided so as to swing up and down.
The rear end of the swinging plate 4e that can swing left and right is attached to the swinging plate 4e in a cantilevered manner so that the rear side is a free end with the pressing member 4c sandwiching the front end of the elastic plate 4a. ing. The elastic plate 4a has a flat portion approximately the same as the width of the belt conveyor 3a, and extends rearward in a cantilever manner so as to extend the inclined surface of the belt conveyor 3a.
The extension plate 4d may be provided so that the rear end swings up and down.

An example of a method of driving the swing plate 4e will be described with reference to FIGS.
The rocking plate 4e is provided so as to extend the inclined surface of the belt conveyor 3a, and the rocking plate 4e has a flat portion approximately the same as the width of the belt conveyor 3a. The swinging plate 4e is held by a swinging plate holding bracket 4i that is mounted so as to span the left and right rear portions of the conveyor side plate 3f so as to be swingable in the left-right direction. A swing boss 4j, which is a pipe-like boss parallel to the traveling direction, is provided at a substantially central portion of the swing plate holding bracket 4i, and a swing center shaft 4f fixed to the swing plate 4e on the swing boss 4j. Is inserted, and the swing plate 4e is attached so as to be swingable left and right.
A swing plate drive hydraulic motor 4h is provided at a position lateral to the swing boss 4j of the swing plate holding bracket 4i, and an output of the swing plate drive hydraulic motor 4h provided rearward in parallel with the traveling direction. A swing cam 4g is fixed to the shaft. The swing cam 4g rotates eccentrically in the vertical and horizontal directions when the swing plate drive hydraulic motor 4h rotates. On the other hand, on the swing plate 4e, a guide plate 4k is provided so as to be close to the top and bottom of the swing cam 4g so as to sandwich the top and bottom of the swing cam 4g, and guides when the swing cam 4g rotates eccentrically up and down. The plate 4k is moved up and down, and the swing plate 4e swings about the swing center shaft 4f. As the swing plate 4e swings up and down in the left-right direction, the soil lifted together with the root vegetables by the slope of the belt conveyor 3a gradually escapes downward from the left and right ends, and reaches the rear end of the swing plate 4e. So that it does n’t collapse suddenly. In addition, the upper part of the lifted soil is broken by vibration to expose the roots of the root vegetables so that they can be easily grasped, thereby reducing extraction errors.

Further, by attaching an elastic plate 4a whose rear end gently hangs downward to the rear end of the rocking plate 4e, the soil and root vegetables A that have passed over the rocking plate 4e suddenly fall or fall down. Prevent root vegetables from falling or breaking during the process.
The elastic plate 4a can maintain the state where the raised root vegetables are exposed to the field scene gently and long, so that the auxiliary worker can easily grasp and pull out the root of the root vegetables.

  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 earth crushing means 8 is used to expose the upper end portion of the root vegetables by removing the earth and sand from the root vegetables and the earth and sand that have risen by the digging body 3 to the left and right. The landslide means 8 has 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 centering on the upper part to wipe out the earth and sand. Break down.

  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 can be moved by a tractor or the like that is mounted above 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 digging body 3 and moves rearward together with the root vegetables A. The soil and root vegetables A are lifted upward along the inclined surface of the belt conveyor 3a, and a part of the lifted soil collapses to expose the roots of the root vegetables A to the field scene. Then, the auxiliary worker holds the head of the root vegetable A exposed in the field scene and pulls out the root vegetable A.

If the elastic plate 4 a is not provided, a space is generated in the lower part and immediately after the passing of the digging body 3 because the digging body 3 lifts the soil and root vegetables A. In this space, the soil and root vegetables A that have been lifted by the rotation of the belt conveyor 3a are drawn downward from the rear end of the belt conveyor 3a so as to be caught in the rotation of the belt conveyor 3a.
Thus, the soil and root vegetables A that have just floated immediately after passing the digging body 3 sinks rapidly into the lower space of the belt conveyor 3a and flows into the lower part of the conveyor. At that time, the root vegetables A are buried again in the soil, so that the soil around the root vegetables A is hardened again. Further, when the soil and root vegetables A are buried, the root vegetables A are tilted or broken by the flow of the soil flowing into the lower part of the conveyor. Even if the auxiliary worker tries to pull out the exposed tip of root vegetable A that has been hardened again by the soil that has flowed in, the root vegetable A may not be pulled out, or root vegetable A may break if it is forced to pull it up.

By attaching the elastic plate 4a to the rear end of the belt conveyor 3a, the root vegetable A that has moved on the belt conveyor 3a is gently blocked from moving to the lower part of the belt conveyor 3a, and the root vegetable tilts again to the soil. Prevent burial. Thereby, the auxiliary worker can grasp the tip portion of the root vegetable A that has been lifted by the belt conveyor 3a and exposed to the field scene, and can be easily pulled upward.

Further, since the elastic plate 4a is an elastic body, the earth pressure applied when the soil and the root vegetables move backward on the elastic plate 4a by the belt conveyor 3a and the weight of the root vegetables are sent while being bent. The root vegetables are not damaged because they are not rubbed and rubbed.

  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.

  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 Drive roller 3c Roller drive gear case 3d Blade 3e Hydraulic motor 3f Conveyor side plate 4a Elastic plate 4b Support body 4c Holding member 4d Extension plate 4e Oscillation plate 4f Oscillation center shaft 4g Oscillation cam 4h Oscillation plate Drive hydraulic motor 4i Oscillating plate holding bracket 4j Oscillating boss 4k Guide plate 5a Hydraulic pump 5b Input gear case 5c Input shaft 7 Excavation part cover 7a Side guard 7b Rear guard 8 Land breaking means

Claims (3)

It is a root crop digging machine such as a long potato that passes the digging body under the root crop such as a long potato and lifts and digs the root crop such as a long potato,
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 root crop digging machine such as a long rice cake, characterized in that an elastic plate extending rearward in a cantilever manner so as to extend the inclined surface of the belt conveyor section is provided at the rear end of the belt conveyor section. It is a root crop digging machine such as a long potato that passes the digging body under the root crop such as a long potato and lifts and digs the root crop such as a long potato,
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,
An extension plate is provided at the rear end portion of the belt conveyor so as to extend the inclined surface of the belt conveyor, and an elastic plate is attached to the extension plate in a cantilevered manner, and the other end portion is extended rearward. Long root digger that is characterized by having long roots.   The root vegetable digging machine for a long bean or the like according to claim 2, wherein the extension plate is provided so as to be swingable to the left or right or up and down with respect to the inclined surface of the belt conveyor.

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