JP7148129B2 - harvester - Google Patents

Description

The present invention relates to harvesters for crops. In particular, it relates to a deep-rooted green onion harvester.

Conventionally, self-propelled green onion harvesters have been widely used in order to automate the harvesting of deep-rooted green onions (also referred to as long green onions and white green onions; hereinafter simply referred to as "green onions"). The green onion harvester digs up the green onions planted in the ridges of the field, and can automatically remove the soil attached to the roots and cut the roots along the route to transport them to the storage stand behind the harvester. It is a work machine. By using a green onion harvester, a series of operations from digging up green onions to storing them in a container can be performed continuously, and the harvesting efficiency of green onions can be greatly improved.

A general green onion harvester has a structure for removing soil adhering to the roots of the green onions on the conveying path of the dug up green onions. For example, Patent Literature 1 discloses a green onion harvester equipped with a mechanism for removing soil from the roots of green onions by rotating a rotating body having projections. The green onion harvester described in Patent Document 1 includes a first soil removing body having a cylindrical mounting drum and soil removing projections provided on the outer peripheral surface of the mounting drum. This first soil removing body is provided for the purpose of removing soil adhering to the roots of the green onion, and when the mounting drum rotates, the soil removing projections come into contact with the roots of the green onion and remove the soil.

JP-A-2003-153626

The soil removing protrusion described in Patent Document 1 is a substantially V-shaped member formed of a wire material such as a metal material. Therefore, for example, when the soil of a field contains moisture due to rainfall, the soil removing projections are likely to be clogged with soil, and the soil removing performance of the first soil removing body is deteriorated. Further, in the first soil removing body of Patent Document 1, since the soil removing projection is formed of a wire rod, there is a problem that if a part of the wire rod is damaged due to wear, the first soil removing body needs to be replaced. .

One of the objects of the present invention is to provide a harvester that can maintain soil removal performance of the root regardless of the condition of the field. Another object of the present invention is to provide a harvester equipped with a highly wear-resistant soil dropping section.

A harvesting machine according to an embodiment of the present invention comprises a machine body, a first conveying device provided in front of the machine body for carrying roots of crops thereon and conveying them rearward, provided above the first conveying device, and A second conveying device that pinches and conveys foliage of crops to the rear, and a soil removing unit that is disposed below the second conveying device and removes soil from the roots of the crops, wherein the soil removing unit is , a cylindrical member, and a plurality of annular bodies having a plurality of teeth provided on the outer peripheral surface of the cylindrical member, wherein the plurality of annular bodies are oblique to the rotation axis of the cylindrical member in plan view are placed.

The soil dropping section may further include a plurality of root cutting members provided on the outer peripheral surface of the cylindrical member. One of the plurality of root cutting members is disposed at the first end of the cylindrical member in the direction of the rotation axis, and the other one is the first end of the cylindrical member in the direction of the rotation axis. may be arranged at a second end opposite to the .

The plurality of annular bodies may have bent portions. The soil dropping portion may include a pair of annular bodies formed by arranging the bent portions adjacent to each other.

The plurality of annular bodies may include a pair of annular bodies that intersect each other in plan view.

In plan view, the annular body may be arranged at an angle of 70 degrees or more and 80 degrees or less with respect to the rotation axis.

In front of the soil removal section described above, another soil removal section may be provided for removing soil from the roots or foliage of the crop. Another soil removal part may include a pair of rotating bodies arranged to face each other and having a plurality of protruding members. During one rotation of the rotating body, the plurality of projecting members may contact the root portion or the foliage portion a plurality of times.

According to one embodiment of the present invention, it is possible to provide a harvester capable of maintaining the soil removal performance of the root regardless of the state of the field. Moreover, according to one embodiment of the present invention, it is possible to provide a harvester equipped with a highly wear-resistant soil dropping section.

BRIEF DESCRIPTION OF THE DRAWINGS It is the top view which looked at the structure of the green onion harvester which concerns on 1st Embodiment. It is the side view which looked at the structure of the green onion harvester which concerns on 1st Embodiment from the left. It is a figure which shows the structure of the 1st soil removal part in the green onion harvester which concerns on 1st Embodiment. It is a figure which shows the structure of the 2nd soil removal part in the green onion harvester which concerns on 1st Embodiment. It is a figure which shows the structure of the 2nd soil removal part in the green onion harvester which concerns on 2nd Embodiment. It is a top view which shows the modification of a structure of the 2nd soil removal part in the green onion harvester which concerns on 2nd Embodiment.

Hereinafter, embodiments of the harvester of the present invention will be described with reference to the drawings. However, the harvester of the present invention can be embodied in many different forms and should not be construed as limited to the description of the examples given below. In the drawings referred to in this embodiment, the same parts or parts having similar functions are denoted by the same reference numerals, and repeated description thereof will be omitted.

In the specification and claims of the present application, "up" indicates a direction away from the field in a substantially vertical direction, and "down" indicates a direction in which the field approaches the field in a substantially vertical direction. Also, "front" indicates the direction in which the harvester travels, and "rear" indicates the direction opposite to the front. Also, "left" indicates the left when facing the direction in which the harvester advances, and "right" indicates the direction opposite to the left.

In the following embodiments, a green onion harvester is exemplified as an example of a harvester for crops, but the invention is not limited to this. That is, the harvester described in the following embodiments may be a harvester for harvesting crops other than scallions. For example, it can be used as a harvester for harvesting crops that are long and have roots at their ends.

<First Embodiment>
(Configuration of green onion harvester)
A schematic configuration of a spring onion harvester according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a top plan view of the configuration of the green onion harvester according to the first embodiment. FIG. 2 is a left side view of the configuration of the green onion harvester according to the first embodiment. As shown in FIGS. 1 and 2, the green onion harvester 10 of the present embodiment roughly includes a driving section 100, a working section 200, a conveying section 300, a supporting section 400, and a storage section 500.

Drive unit 100 includes body 110 and traveling device 120 . The body 110 is equipped with an engine 112 that serves as a drive source for the green onion harvester 10 and functions as a main body of the green onion harvester 10 . An upper portion of the fuselage 110 functions as a workbench 114 . On the workbench 114 , an operator binds the green onions conveyed by the conveying unit 300 and collects them into a predetermined amount and stores them in a container (not shown) placed in the storage unit 500 . Note that the drive unit 100 may also be called a self-propelled machine.

The travel device 120 is a mechanism that is arranged below the machine body 110 and allows the green onion harvester 10 to travel by itself. The traveling device 120 in this embodiment is a pair of crawlers arranged below the left and right ends of the body 110 . The travel device 120 includes a transmission 122 provided in the lower portion of the fuselage 110 and is driven by the transmission 122 to change speed. It should be noted that the travel device 120 is not limited to crawlers, and wheels such as tires can also be used.

The working part 200 is a part where a worker performs a green onion harvesting operation. The work section 200 includes a control section 210 , a work step 220 , an auxiliary step 230 and a seat 240 . The operation unit 210 is a part for operating the green onion harvester 10 and can operate the drive unit 100 and the transport unit 300 . A worker can operate the green onion harvester 10 or perform harvesting work on the workbench 114 while sitting on the swivel seat 240 . The working step 220 and the auxiliary step 230 function as scaffolding to allow the operator to move forward and backward.

The conveying unit 300 is a mechanism that digs up the green onions planted in the ridges of the field and carries the dug up green onions backward while removing soil attached to the roots and cutting the roots. The conveying unit 300 includes a first conveying device 310 that carries the root of the green onion and conveys it backward, a second conveying device 320 that clamps the foliage of the green onion and conveys it backward, and removes the soil adhering to the foliage and root of the green onion. It includes a first shovel 330 and a second shovel 340 for dropping. The conveying unit 300 is provided in front of the driving unit 100 and continuously performs a series of operations such as digging up green onions, removing soil, and cutting roots in accordance with the progress of the traveling device 120 of the driving unit 100 .

The first conveying device 310 is arranged in front of the fuselage 110 . In this embodiment, the first conveying device 310 is an endless bar conveyor having a digging blade 311 at its tip. The digging blade 311 digs up green onions from the ground as the green onion harvester 10 advances. The dug up green onions are transported backward while maintaining a vertical posture with their roots placed on the bar conveyor. A rear end portion of the first conveying device 310 is rotatably connected to the body 110 via a shaft. A hydraulic cylinder 312 is provided between the first transport device 310 and the body 110 , and the vertical rotation of the first transport device 310 is controlled by the expansion and contraction of the hydraulic cylinder 312 .

The second transport device 320 is arranged above the first transport device 310 . The second conveying device 320 has a pair of left and right first conveying belts 321a and 321b for holding and conveying the foliage of green onions in a vertical posture, and facing each other such that the facing surfaces of the first conveying belts 321a and 321b are close to each other. It includes a plurality of sets of rollers 322a and 322b acting behind the face. The first conveying belts 321a and 321b are longer than the first conveying device 310, and hold the green onions in a vertical posture while holding the stems and leaves of the green onions. near side) can be conveyed.

The second conveying device 320 further includes a pair of left and right second conveying belts 323a and 323b that are continuous with the end portions of the first conveying belts 321a and 321b. The second conveying belts 323 a and 323 b receive the green onions conveyed by the first conveying belts 321 a and 321 b and convey the green onions to the vicinity of the workbench 114 of the machine body 110 . In this conveying process, the second conveying belts 323a and 323b sequentially twist the posture of the green onions from the vertical posture to the oblique horizontal posture. That is, at the front ends of the second conveying belts 323a and 323b, the stems and leaves of the green onions are held in a vertical posture, and at the rear ends, the stems and leaves of the green onions are held obliquely laterally by twisting the second conveying belts 323a and 323b. It is configured to be clamped in a posture. A third conveying belt 324 is arranged near the end portions of the second conveying belts 323a and 323b so that the scallions can be conveyed backward while supporting the leaf portions of the scallions in an oblique horizontal posture. .

The front end of the second transfer device 320 is connected to the tip of the link arm 325 and the rear end is connected to the fuselage 110 via the link arm 326 . When the tip side of the first transfer device 310 rotates up and down due to the expansion and contraction of the hydraulic cylinder 312, the link arms 325 and 326 also move the second transfer device 320 backward. In this manner, the first conveying device 310 and the second conveying device 320 rotate in conjunction with each other, but the link arms 325 and 326 keep a predetermined distance therebetween.

Both the above-described first soil removal section 330 and second soil removal section 340 are arranged below the second conveying device 320 . The first soil dropping unit 330 is composed of a pair of rotating bodies arranged with the moving path of the foliage and roots of the green onion conveyed in a vertical posture sandwiched therebetween. The first soil removing section 330 rotates to apply a plurality of projecting members of the rotating body to the foliage or roots of the scallion to remove soil adhering to the foliage or roots. A specific structure of the first soil removal part 330 will be described later.

The second soil removal section 340 is a rotating body arranged behind the first soil removal section 330, and is arranged on or slightly below the movement path of the roots of green onions conveyed in a vertical posture. The second soil removing part 340 rotates to apply a plurality of annular plates of the rotating body to the root of the scallion to remove the soil adhering to the root. A specific structure of the second soil dropping portion 340 will be described later.

The support section 400 includes a pair of left and right support arms 410 arranged side by side with a first transport device 310 , wheels 420 attached to the tips of the support arms 410 , and wheels 420 and the first transport device 310 . Including disc 430 provided therebetween. The wheels 420 have the function of adjusting the vertical position of the first conveying device 310, and follow the ridges for moving the machine body 110 along the ridges in contact with the inclined portions (shoulders) of the ridges formed in the field. It also functions as a device. The vertical position of the first transfer device 310 can be adjusted by the hydraulic cylinder 440 . The disk 430 is positioned to abut the slope of the ridge and serves to break up the slope of the ridge.

The storage section 500 includes a first mounting table 510 , a parallel link mechanism 520 , a support member 530 and a second mounting table 540 . The first mounting table 510 is a table on which a storage member such as a container for storing harvested green onions or a net is placed, and is located behind the work table 114 . One end of the first mounting table 510 is rotatably connected to the body 110 so that the first mounting table 510 can be lifted upward. In addition, since a plurality of rollers 510a are arranged on the working surface of the first mounting table 510 of the present embodiment, it is possible to move the container or the like containing green onions in the front-rear direction with a small force.

Also, the first mounting table 510 is connected to the machine body 110 via a parallel link mechanism 520 . The parallel link mechanism 520 is composed of, for example, a link member 520a and a gas spring 520b. With this configuration, when a storage member (not shown) is placed on the first placement table 510, the first placement table 510 moves downward due to the weight of the storage member (or the weight of the storage member and the green onion). do. Therefore, by adjusting the biasing force of the gas spring 520b so that the working surface of the first mounting table 510 is positioned just around the waist of the worker, the efficiency of the work of storing green onions can be improved.

In this embodiment, the parallel link mechanism 520 is arranged to the right of the central axis of the first mounting table 510 in plan view. In the green onion harvester 10 of the present embodiment, when the harvested green onions arrive at the workbench 114, the roots of the green onions are positioned on the right side and the leaves are positioned on the left side. Therefore, when the green onion is placed in the storage member placed on the first mounting table 510 , the balance of the center of gravity is positioned on the right side of the first mounting table 510 . Therefore, in this embodiment, the parallel link mechanism 520 is arranged to the right of the central axis of the first mounting table 510 in consideration of the weight balance during storage. On the other hand, the support member 530 is arranged at substantially the same position as the central axis of the first mounting table 510 . However, the position of the parallel link mechanism 520 or the support member 530 is arbitrary, and is not limited to the structures shown in FIGS.

Like the first mounting table 510 , the second mounting table 540 is a table on which a storage member such as a container for storing harvested green onions or a net is placed, and is positioned behind the first mounting table 510 . One end of the second mounting table 540 is rotatably connected to the rear end portion of the first mounting table 510 so that the second mounting table 540 can be rotated upward or downward. The position of the second mounting table 540 relative to the first mounting table 510 when the second mounting table 540 is rotated can be adjusted by, for example, providing a position adjusting member on the frame constituting the second mounting table 540. should be

(Structure of the first soil dropping section)
The first soil dropping section 330 in the green onion harvester 10 of the present embodiment will be described. FIG. 3 is a diagram showing the configuration of the first soil remover 330 in the green onion harvester 10 according to the first embodiment. Specifically, FIG. 3A is a front view of the first soil removal part 330 as seen from the front. As shown in FIG. 3(A), the first soil dropping section 330 is composed of a pair of rotating bodies 331 and 332 arranged to face each other. FIG. 3B is a side view of the first soil removal part 330 as seen from the side. However, for convenience of explanation, only one rotating body 331 of the pair of rotating bodies is shown in FIG. Of course, the following description applies to the structure of the rotor 332 as well.

As shown in FIG. 3(B), one rotating body 331 that constitutes the first soil dropping section 330 has a first plate 331a, a second plate 331b and a third plate 331c. The first plate 331a, the second plate 331b and the third plate 331c can be made of metal plates, for example. Each of these plates is a member that supports a plurality of projecting members 333a to 333d, which will be described later. In this specification, a member that supports a plurality of projecting members may be called a support. That is, each of the rotating bodies 331 and 332 constituting the first soil removal section 330 has a plurality of projecting members 333a to 333d arranged on the respective supports (first plate 331a, second plate 331b and third plate 331c). can be said to have

In this embodiment, a first plate 331a and a second plate 331b, which are two plate-like members shorter than the third plate 331c, are joined to a third plate 331c composed of one plate-like member. A substantially cross-shaped rotating body 331 is constructed. At this time, the plate surfaces of the first plate 331a, the second plate 331b, and the third plate 331c (surfaces visually recognized in FIG. 3B) are positioned substantially on the same plane. As a result, the heights of a plurality of projecting members 333a to 333d, which will be described later, can be made uniform.

As shown in FIGS. 3A and 3B, the first plate 331a is provided with a protrusion member 333a, the second plate 331b is provided with a protrusion member 333b, and the third plate 331c is provided with a protrusion member 333b. are provided with projecting members 333c and 333d. The plurality of projecting members 333a to 333d are members made of an elastic material such as rubber. That is, a plurality of projecting members 333a to 333d made of an elastic material are attached to the first plate 331a, the second plate 331b and the third plate 331c, respectively. FIG. 3 shows an example in which a total of four projecting members 333a to 333d, one on the first plate 331a, one on the second plate 331b, and two on the third plate 331c, are provided, but the present invention is not limited to this. . For example, it is possible to provide a total of eight projecting members, two on the first plate 331a, two on the second plate 331b, and four on the third plate 331b.

Further, in the rotating body 331 of this embodiment, curved portions 335 are provided at the ends of the first plate 331a, the second plate 331b, and the third plate 331c. The curved portion 335 plays a role of removing soil from the root of the green onion and also plays a role of reinforcing each plate.

The rotating body 331 of the present embodiment is supported by a drive shaft 334, and rotates down-cut in the same direction as the traveling direction of the green onion harvester 10 (forward direction) as the drive shaft 334 rotates. At that time, as the first plate 331a, the second plate 331b and the third plate 331c rotate, the plurality of projecting members 333a to 333d also rotate. As described above, the first soil dropping section 330 is arranged across the movement path of the foliage or root of the green onion conveyed in the vertical position. In other words, the stems and leaves or roots of the green onion pass through the space between the rotating bodies 331 and 332 shown in FIG. 3(A). Therefore, when the foliage or root of the scallion passes while the pair of rotating bodies 331 and 332 are rotating, the plurality of projecting members 333a to 333d come into contact with the foliage or root, and the soil can be efficiently removed.

As shown in FIG. 3B, when focusing on the rotating body 331, projecting members 333a to 333d are provided at positions close to the drive shaft 334, and the first plate 331a and the second plate 331b are arranged apart from the position. A curved portion 335 is provided at the end. Therefore, when the rotating body 331 rotates, the root soil is dropped by a total of eight sites. As described above, according to the present embodiment, soil can be removed using many parts of the rotating body. Therefore, even if the soil in the field contains water, the soil removal performance can be sufficiently maintained. It is possible.

In addition, the radius of rotation of the trajectory drawn by the end of the rotating body 331 (the position of the curved portion 335) due to rotation is set to be larger than the radius of rotation of the cylindrical member 341 of the second earth removing portion 340, which will be described later. . That is, the radius of rotation of the first soil dropping portion 330 is larger than the radius of rotation of the second soil dropping portion 340 . As a result, the first soil removing unit 330 can remove not only the roots of the green onion but also the soil attached to the foliage, and the soil attached to the entire green onion can be roughly removed. On the other hand, the second soil removal section 340 focuses on removing soil adhering to the roots. That is, in the green onion harvester 10 of the present embodiment, the soil adhering to the green onion is roughly removed by the first soil removal unit 330, and the soil remaining on the root is removed by the rear second soil removal unit 340. It is configured.

In addition, it is preferable to adjust the position of the first soil removal part 330 so that the root of the green onion crosses the rotation centers of the rotating bodies 331 and 332 . In addition, in this embodiment, while the spring onion passes, the rotors 331 and 332 are controlled to rotate in the forward direction (forward direction) at a speed of 50 to 70 rpm. However, the rotational speeds of the rotating bodies 331 and 332 can be set arbitrarily within a range that does not damage the foliage of the green onion.

Further, as shown in FIGS. 3A and 3B, in this embodiment, a plurality of projecting members 333a to 333d are arranged at rotationally symmetrical positions about the drive shaft 334. As shown in FIGS. With such an arrangement, it is possible to increase the number of times that the plurality of projecting members 333a to 333d come into contact with the foliage and roots of the scallions, thereby efficiently removing the soil.

By the way, in the present embodiment, an example in which the rotating body 331 is composed of three plates is shown, but it is not intended to be limited to plate-like members. That is, the supporting member constituting the rotating body 331 is not limited to a plate-like member as long as it can support the plurality of projecting members 333a to 333d. Moreover, the number of supports constituting the rotating body 331 is also arbitrary. For example, the rotating body 331 may be configured by arranging two or more support bodies so as to intersect with each other, or the rotating body 331 may be configured using one support body processed into a desired shape. . Furthermore, it is also possible to arrange a plurality of projecting members on a circular support and configure the rotating body 331 with the center of the support as the rotation axis.

As described above, the rotating body 331 of the present embodiment realizes a configuration in which a plurality of projecting members 333a to 333d are arranged around the drive shaft 334 (preferably, rotationally symmetrical positions) around the drive shaft 334. I wish I could. In other words, by providing a plurality of projecting members 333a to 333d around the drive shaft 334, the plurality of projecting members 333a to 333d come into contact with the root or foliage of the scallion one after another while the rotating body 331 rotates once. It is sufficient if it is configured to This makes it possible to increase the number of times the projection members come into contact with the green onions, and efficiently remove the soil adhering to the roots or foliage. In the case of this embodiment, since a plurality of projecting members 333a to 333d are arranged around the drive shaft 334 at substantially equal intervals, the four projecting members 333a to 333d intermittently intermittently rotate during one rotation of the rotating body 331. will come into contact with green onions. However, the present invention is not limited to this, and the plurality of projecting members may be configured to contact the foliage or root of the green onion two or more times (preferably three or more times, more preferably four or more times).

(Structure of the second soil dropping section)
The second soil dropping section 340 in the green onion harvester 10 of the present embodiment will be described. FIG. 4 is a diagram showing the configuration of the second soil removal section 340 in the green onion harvester 10 according to the first embodiment. Specifically, FIG. 4A is a side view of the second soil dropping portion 340 as seen from the side. As shown in FIG. 4A, the second earth removal part 340 includes a cylindrical member 341, a plurality of annular plates 342 provided on the outer peripheral surface of the cylindrical member 341, and a first root cutting plate 343a and a second root cutting plate 343a. Includes root cutting plate 343b.

The cylindrical member 341 is a member that serves as the main body of the second earth dropping portion 340, and is provided with a through hole 344 through which a shaft is inserted in the center of the member. A drive shaft (not shown) is inserted into the through hole 344, and the drive shaft moves the cylindrical member 341 around the rotation shaft 345 in the opposite direction (backward direction) to the first soil removing portion 330. Configured to cut and rotate. In this embodiment, the cylindrical member 341 is controlled to rotate in the direction described above at a speed of 140 to 230 rpm (typically 140 to 160 rpm). Since the second soil removal part 340 acts only on the root part of the green onion, there is no fear of damaging the foliage part. Therefore, the second soil removal section 340 can be rotated faster than the first soil removal section 330, for example, it can be rotated two to three times faster.

Further, as shown in FIG. 4B, the cylindrical member 341 has a cylindrical shape having a longitudinal direction in the direction of the rotation axis 345, and a plurality of annular plates 342 are arranged side by side along the rotation axis 345. . The plurality of annular plates 342 are plate-like members and have openings that enable fitting to the outer peripheral surface of the cylindrical member 341 . Further, as shown in FIG. 4A, the annular plate 342 has a toothed (or wavy) contour on the outer periphery. In other words, it can be said that the annular plate 342 has a plurality of teeth 342a. When the toothed annular plate 342 rotates together with the cylindrical member 341, a plurality of teeth 342a of the annular plate 342 come into contact with the roots of the scallions, making it possible to remove soil adhering to the roots.

In addition, in this embodiment, an example in which the annular plate 342 is provided on the outer peripheral surface of the cylindrical member 341 is shown, but it is not intended to be limited to a plate-like (plate-like) member. In other words, it suffices if a member having a tooth-like (or wave-like) contour is arranged on the outer peripheral surface of the cylindrical member 341 . Therefore, it can be said that the second soil removal part 340 of the present embodiment has a plurality of annular bodies along the rotation axis 345 of the cylindrical member 341 .

Furthermore, as shown in FIG. 4B, the plurality of annular plates 342 are obliquely attached to the rotating shaft 345 . Specifically, the plate surface of the annular plate 342 (the surface visible in FIG. 4A) is arranged obliquely with respect to the rotation axis 345 of the cylindrical member 341 in plan view. Although the degree of oblique arrangement with respect to the rotation axis 345 is arbitrary, for example, the above-mentioned plate surface with respect to the rotation axis 345 is 70 degrees or more and 80 degrees or less (preferably 72 degrees or more and 78 degrees or less). And it is sufficient.

Since the plurality of annular plates 342 are arranged obliquely with respect to the rotating shaft 345, the soil removing portion 340 of the present embodiment rotates the plurality of tooth portions 342a along the rotating shaft 345 as the cylindrical member 341 rotates. Reciprocating motion is performed in the left-right direction of the green onion harvester 10 . As a result, when the root of the green onion being transported by the second transporting device 320 hits the second earth removal part 340, it is swayed left and right by the plurality of teeth 342a, and the plurality of teeth 342a hit from a plurality of angles. , can efficiently remove the attached soil.

The interval between the annular plates 342 can be arbitrarily determined. below). In order to shake the foliage of the scallion efficiently, it is preferable that there is a space between the adjacent annular plates 342 to accommodate the foliage of the scallion. If this interval is too narrow, soil will tend to accumulate between the adjacent annular plates and it will be difficult to shake the roots. Conversely, if this interval is too wide, the number of annular plates 342 arranged on the cylindrical member 341 is limited, and the number of tooth portions contacting the root portion is reduced, so there is a risk that soil removal performance will be degraded.

When the plurality of annular plates 342 are arranged obliquely with respect to the rotating shaft 345 as described above, as the cylindrical member 341 rotates, the trajectory drawn by the tip 342aa of the tooth portion 342a of each annular plate 342 is a wavy trajectory. Become. That is, in plan view, when the axis of rotation 345 is the vertical axis, the axis perpendicular to the axis of rotation 345 is the horizontal axis, and the center of the annular plate 342 is the origin, the tip 342aa of the toothed portion 342a is one rotation of the cylindrical member 341. A reciprocating motion is performed along the rotating shaft 345 with a period of cyclically, and the trajectory draws a sine wave. The reciprocating motion of the tips 342aa of the plurality of teeth 342a efficiently rocks the roots of the scallion to remove soil adhering to the roots.

In this embodiment, an example in which three annular plates 342 are attached to the cylindrical member 341 is shown, but the present invention is not limited to this. The number of annular plates 342 may be determined by considering the length of the cylindrical member 341 in the longitudinal direction and the intervals between the annular plates 342 . Also, the annular plate 342 can be welded after being fitted into the cylindrical member 341, but the invention is not limited to this, and the cylindrical member 341 and the annular plate 342 may be integrally formed.

The first root-cutting plate 343a and the second root-cutting plate 343b are parts that act on the roots of green onions to cut the roots. The first root-cut plate 343a and the second root-cut plate 343b are provided at ends of the cylindrical member 341 in the longitudinal direction, respectively. Specifically, as shown in FIG. 4B, the first root cutting plate 343a is provided at the first end (the right end in FIG. 4B) in the direction of the rotation axis 345 of the cylindrical member 341. The second root cutting plate 343b is arranged at the second end opposite to the first end in the direction of the rotating shaft 345 of the cylindrical member 341 (the left end in FIG. 4(B)). Further, as shown in FIG. 4(A), in this embodiment, two first root cutting plates 343a are provided for the first end portion, and both are positioned substantially symmetrically about the rotating shaft 345. are provided. Although illustration is omitted, this point is the same for the second root cutting plate 343b.

As shown in FIG. 4A, the first root cutting plate 343a of the present embodiment is composed of a hook-shaped (or hook-shaped) metal plate, and as the cylindrical member 341 rotates, it hooks the root of the green onion. It plays the role of performing root cutting work to cut by cutting. Of course, the shape of the first root-cutting plate 343a is not limited to this, and may be any shape as long as the shape allows root-cutting work. In other words, it is sufficient that a portion for root cutting work is provided on the outer peripheral surface of the cylindrical member 341, and such a portion for root cutting work can also be called a root cutting member. Although illustration is omitted, this point is the same for the second root cutting plate 343b.

In addition, in the present embodiment, an example is shown in which two first root-cutting plates 343a are provided at the first end and two second root-cutting plates 343b are provided at the second end, but the present invention is not limited to this. do not have. For example, it is possible to further increase the number of root cutting plates arranged at each end, or conversely, only one may be provided. However, in order to increase the efficiency of root cutting work, it is preferable to provide root cutting plates at both the first end and the second end.

As described above, in the second earth dropping section 340 of the present embodiment, the plurality of annular plates 342 are arranged obliquely with respect to the rotating shaft 345 . Therefore, as the cylindrical member 341 rotates, the plurality of teeth 342a reciprocate in the direction along the rotation shaft 345 (horizontal direction of the green onion harvester 10). As a result, the roots of the scallion being transported by the second transporting device 320 are shaken by the plurality of teeth 342a, and the attached soil can be efficiently removed. Also, the annular plate 342 is formed by processing a metal plate, and is integrated with a plurality of teeth 342a. Therefore, even if the field contains a lot of water, the plurality of teeth 342a will not be clogged with mud, and the soil removal performance of the root can be maintained regardless of the state of the field.

Further, since the outer circumference of the annular plate 342 constitutes a plurality of tooth portions 342a, even if some wear occurs due to friction with the root portion, it will not immediately become unusable due to chipping. As described above, according to the present embodiment, the wear resistance of the second soil dropping portion 340 can be improved.

<Second embodiment>
In this embodiment, an example in which the configuration of the annular plate is different from that of the first embodiment will be described. FIG. 5 is a diagram showing the configuration of the second soil removal section 350 in the green onion harvester 10 according to the second embodiment. Specifically, FIG. 5A is a side view of the second soil dropping section 350. FIG. As shown in FIG. 5(A), the second soil dropping section 350 includes a cylindrical member 351 and a pair of annular plates 352 and 353 provided on the outer peripheral surface of the cylindrical member 351 . 5A and 5B, the cylindrical member 351, the through hole 354, and the rotating shaft 355 are the same as the cylindrical member 341 and the through hole shown in FIGS. 4A and 4B. 344 and the rotary shaft 345, detailed description thereof is omitted here.

As shown in FIG. 5B, in this embodiment, a plurality of pairs of annular plates 352 and 353 are provided on the outer peripheral surface of the cylindrical member 351 along the rotating shaft 355 . As shown in FIG. 5A, the annular plate 352 has a plurality of teeth 352a on its outer circumference, like the annular plate 342 shown in the first embodiment. Although illustration is omitted, this also applies to the annular plate 353 .

Also, the pair of annular plates 352 and 353 have a bent portion 356, and the bent portions 356 are arranged adjacent to each other to form a pair. Specifically, as shown in FIG. 5B, a pair of annular plates 352 and 353 are arranged so that the convex sides of the bent portion 356 face each other, and form an X shape (or a V shape) as a whole. are placed in combination with

The pair of annular plates 352 and 353 having such a structure rotates together with the cylindrical member 351, thereby rotating the plurality of teeth of each of the pair of annular plates 352 and 353 (the teeth 352a in the case of the annular plate 352). It hits the root of the green onion and makes it possible to remove the soil adhering to the root.

At that time, the plurality of teeth 352a of the annular plate 352 and the plurality of teeth (not shown) of the annular plate 353 reciprocate along the rotation axis 355, respectively. As can be seen, the tips 352aa of the multiple teeth trace trajectories toward and away from each other. In addition, unlike the first embodiment, the roots are hit by a plurality of teeth from two intersecting directions. Soil can be removed more efficiently.

Furthermore, since the pair of annular plates 352 and 353 of this embodiment are combined in an X-shape, as shown in FIG. The distance between the pair of annular plates 352 and 353 gradually increases as it moves outward from the . Conversely, the space between the pair of annular plates 352 and 353 gradually narrows as it approaches the rotating shaft 355 . Therefore, when the second soil removing part 350 rotates, the root of the scallion entering the gap between the pair of annular plates 352 and 353 on the upstream side of the rotation is caught in the gradually narrowing gap and finally cut. In this way, the second soil removal section 350 of the present embodiment has the effect of removing the soil from the roots of the scallion and also the effect of being able to perform the root cutting work.

(Modification)
In the present embodiment, a set of the pair of annular plates 352 and 353 having bent portions has been exemplified and described, but the present invention is not limited to this. good too. FIG. 6 is a plan view showing a modification of the configuration of the second soil dropping section 350 in the green onion harvester 10 according to the second embodiment. As shown in FIG. 6, it is also possible to use an annular plate 361 comprising a pair of intersecting annular plates 361a and 361b.

As described above, the present invention has been described with reference to the drawings, but the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the present invention. Moreover, each of the above-described embodiments can be combined unless there is a particular technical contradiction.

DESCRIPTION OF SYMBOLS 10... Harvesting machine 100... Drive part 110... Machine body 112... Engine 114... Workbench 120... Travel device 122... Transmission 200... Work part 210... Control part 220... Work step 230... Auxiliary step 240 Seat 300 Conveying unit 310 First conveying device 311 Excavating blade 312 Hydraulic cylinder 320 Second conveying device 321a First conveying belt 322a Roller 323a 2nd conveying belt 324... 3rd conveying belt 325... link arm 326... link arm 330... first earth dropping section 331... rotating body 331a... first plate 331b... second plate 331c... third 3 plates 332 rotating body 333a to 333d protruding member 334 driving shaft 335 curved portion 340 second soil dropping portion 341 cylindrical member 342 annular plate 342a tooth portion 342aa Tip 343a First root cutting plate 343b Second root cutting plate 344 Through hole 345 Rotating shaft 350 Second soil removing part 351 Cylindrical member 352 Annular plate 352a Tooth , 352aa... tip, 353... annular plate, 354... through hole, 355... rotating shaft, 356... bent portion, 361... annular plate, 361a, 361b... annular plate, 400... support part, 410... support arm, 420... wheel , 430... Disk, 440... Hydraulic cylinder, 500... Storage unit, 510... First mounting table, 510a... Roller, 520... Parallel link mechanism, 520a... Link member, 520b... Gas spring, 530... Support member, 540... Third 2 table

Claims (7)

Airframe and
a first conveying device provided in front of the machine body for carrying roots of crops thereon and conveying them rearward;
a second conveying device provided above the first conveying device for sandwiching foliage of the crop and conveying it rearward;
a soil removing unit disposed below the second conveying device for removing soil from the roots of the crop;
with
The soil removal part includes a cylindrical member and a plurality of annular bodies having a plurality of teeth provided on the outer peripheral surface of the cylindrical member,
The harvester, wherein the plurality of annular bodies are obliquely arranged with respect to the rotation axis of the cylindrical member in a plan view. The soil removal part further includes a plurality of root cutting members provided on the outer peripheral surface of the cylindrical member,
One of the plurality of root cutting members is disposed at the first end of the cylindrical member in the direction of the rotation axis, and the other one is the first end of the cylindrical member in the direction of the rotation axis. 2. Harvesting machine according to claim 1, arranged at a second end opposite to the . The plurality of annular bodies have bent portions,
The harvester according to claim 1 or 2, wherein the soil dropping portion includes a pair of annular bodies formed by arranging the bent portions adjacent to each other. The harvester according to claim 1 or 2, wherein the plurality of annular bodies include a pair of mutually intersecting annular bodies in plan view. The harvester according to any one of claims 1 to 4, wherein the annular body is arranged at an angle of 70 degrees or more and 80 degrees or less with respect to the rotation axis in plan view. Airframe and
a first conveying device provided in front of the machine body for carrying roots of crops thereon and conveying them rearward;
a second conveying device provided above the first conveying device for sandwiching foliage of the crop and conveying it rearward;
a soil removing unit disposed below the second conveying device for removing soil from the roots of the crop;
with
The soil removal part has a plurality of teeth on the outer peripheral surface,
The harvester, wherein the position of the tip of each tooth in the direction along the rotation axis changes so as to perform reciprocating motion along the rotation axis as the soil remover rotates . In front of the soil removal section, another soil removal section for removing soil from the roots or foliage of the crop is provided,
The other soil dropping section includes a pair of rotating bodies arranged facing each other and having a plurality of projecting members,
The harvester according to any one of claims 1 to 6, wherein the plurality of projecting members contact the root portion or the foliage portion a plurality of times during one rotation of the rotating body.

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