JP2019216616A - Leek harvester - Google Patents

Abstract

To provide a leek harvester in which mud is hardly accumulated on a conveyor of a digging part, and no mud adheres to harvested objects.SOLUTION: There is provided a leek harvester A comprising a travel machine body 1 and a harvesting part 2 for digging leeks N from a ridge U for harvesting the leeks. The harvesting part 2 comprises: a digging part 20 for digging the leeks N; a transport part 21 for holding the dug leeks N and transporting the same to the rear side; and ridge collapse parts 60 each of which is provided on one of left/right sides of a front part of the digging part 20 and has a ridge collapse rotor 61 for collapsing the ridge U from respective sides. The ridge collapse part 60 is integrally lifted up and down with the digging part 20 and the transport part 21, with a rear part of the digging part 20 as a pivotal part. A rotor drive mechanism for transmitting drive force to the ridge collapse rotor 61 comprises: a first rotor drive shaft 71 extending upward from a drive output shaft 70 whose axial direction is a lateral direction and which is provided on the pivotal part; and a second rotor drive shaft 72 extending forward from an upper end of the first rotor drive shaft 71 and coupled to the ridge collapse rotor 70.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a green onion harvesting machine, and more particularly to a green onion harvesting machine provided with a harvesting unit for digging and harvesting green onions from a ridge on which green onions are cultivated, in a self-propelled traveling machine.

  Patent Literature 1 below includes a digging portion for digging green onions, a conveying portion for nipping and squeezing the green onion dug by the digging portion, and a ridge breaking portion having a ridge breaking rotor for breaking ridges from both sides, A leek harvester is disclosed in which a digging section, a transport section, and a ridge breaking section are pivotally supported at a base end of a traveling machine body, and a distal end side can be integrally moved up and down.

JP-A-2006-86643

  However, in the onion harvesting machine of Patent Document 1, rotor drive shafts for transmitting a driving force to the ridge breaking rotor are provided side by side on both sides of a conveyor of a dug-up section provided below a transport section, Mud is difficult to be discharged from the left and right sides of the conveyor, and there has been a problem that the mud accumulates on the conveyor and adheres to the harvest.

  In view of the above problems, an object of the present invention is to provide a green onion harvesting machine in which mud is less likely to accumulate on a conveyor at a digging-up section and mud does not adhere to harvested products.

The green onion harvesting machine of the present invention is a green onion harvesting machine equipped with a harvesting unit for digging and harvesting green onions from a ridge on which green onions are grown, on a self-propelled traveling machine.
The harvesting part is a digging part for digging green onions, a conveying part for sandwiching and transporting the green onion digged by the digging part, and ridges provided on the left and right sides in front of the digging part to break ridges from both sides. A ridge breaking portion having a breaking rotor,
The ridge breaking portion is configured to be able to move up and down integrally with the digging portion and the transporting portion, with a rear portion of the digging portion as a pivot portion,
A rotor driving mechanism for transmitting a driving force to the ridge breaking rotor, a first rotor driving shaft extending upward from a driving output shaft provided in the pivot portion and having a left-right direction as an axial direction, the first rotor driving shaft; A second rotor drive shaft extending forward from the upper end of the drive shaft and connected to the ridge breaking rotor.

  In the present invention, the second rotor drive shaft may extend forward along the transport section.

In the present invention, the ridge breaking portion includes a rotor cover that covers the upper side and the left and right outer sides of the ridge breaking rotor,
The rotor cover may be supported in a suspended state by a support portion that branches upward from a drive case that houses the second rotor drive shaft and extends forward.

Further, in the present invention, the rotor cover is suspended by the support portion and covers an upper side of the ridge breaking rotor, and a side attached to the upper cover portion and covers left and right outer sides of the ridge breaking rotor. And a cover part,
The side cover portion may be such that a mounting angle with respect to the upper cover portion can be changed.

  According to the present invention, the rotor drive mechanism for transmitting the driving force to the ridge breaking rotor extends upward from the drive output shaft behind the digging portion, and then extends forward, so that the left and right sides of the digging portion can be moved. Since it is not arranged on both sides, it is difficult for mud to accumulate on the conveyor of the excavated portion, and mud does not adhere to the crop.

Perspective view of the green onion harvester of the present embodiment Left side view of the onion harvester of the present embodiment Right side view of the onion harvester of the present embodiment Top view of the green onion harvester of the present embodiment Front view of the green onion harvester of the present embodiment Rear view of the green onion harvester of the present embodiment Longitudinal sectional view of the green onion harvester of the present embodiment Perspective view of the scraping part Perspective view of rotor cover Top view of rotor cover

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. A shown in FIGS. 1 to 7 is a green onion harvester according to the present embodiment, FIG. 1 is a perspective view of the green onion harvester A, FIG. 2 is a left side view of the green onion harvester A, and FIG. A right side view, FIG. 4 is a plan view of the onion harvester A, FIG. 5 is a front view of the onion harvester A, FIG. 6 is a rear view of the onion harvester A, and FIG. It is. The green onion harvesting machine A includes a self-propelled traveling machine body 1 and a harvesting unit 2 for digging and harvesting green onions N from ridges U on which green onions N are cultivated. In the present embodiment, the green onion N is a long green onion having a rhizome Na and a leaf Nb. In the following description, the left side of the traveling body 1 in the forward direction is simply called the left side, and the right side of the traveling body 1 in the forward direction is simply called the right side.

[Configuration of traveling body]
The traveling body 1 includes a body frame 11 formed in a three-dimensional frame shape, and a pair of crawler traveling parts 10, 10 arranged on both sides of the body frame 11. An engine 12 is mounted on the right rear portion of the body frame 11 so as to be located above and behind the right traveling portion 10, and a transmission for transmitting the driving force of the engine 12 to the traveling portions 10, 10 is provided on a lower portion of the body frame 11. The case 13 is arranged between the pair of left and right traveling units 10, 10. The transmission case 13 is disposed on the right rear side of the body frame 11, that is, on the right traveling unit 10 side. An operation unit 14 for steering / shifting the traveling units 10 and 10 and performing a harvesting operation of the harvesting unit 2 is disposed on the upper right side of the body frame 11. At the rear end of the body frame 11, a boarding step portion 24 in the form of a horizontal plate on which an operator rides is disposed so as to project rearward.

[Structure of harvesting unit]
The harvesting unit 2 includes a pair of left and right ridge breaking units 60, 60, a digging unit 20, a conveying unit 21, a scraping unit 22, and a posture changing / aligning unit 23 as each working unit. The pair of left and right ridge breakers 60, 60 break both shoulders of the ridge U to reduce the resistance of the digging and raising part 20 to the ridge U. A green onion N is cultivated on the ridge U having reduced entry resistance in this way, and the green onion N is dug up by the dug-up section 20. The transport unit 21 grips the middle part of the leaf portion Nb of the green onion dug by the dug-up unit 20, and transports the gripped green onion N rearward and upward in the standing posture. The scraping unit 22 scrapes off the clumps of soil attached to the rhizome Na of the green onion N transported by the transport unit 21. The posture changing / arranging unit 23 inherits the onion N transported from the terminal end of the transporting unit 21 in the upright posture, sandwiches the middle part of the inherited green onion N, and moves the sandwiched green onion N outward from the upright posture. While the posture is changed and aligned to the forward leaning posture inclined to the forward leaning state, the paper is conveyed leftward and upward. The excavating unit 20, the transporting unit 21, and the scraping unit 22, which are the working units, are arranged on a virtual straight line L extending in the front-rear direction in front of the traveling machine body 1 and behind these working units. In addition, the boarding step portion 24 is disposed on the virtual same straight line L.

  The excavating part 20 pivotally supports the base end of a rectangular frame-shaped support frame 30 formed by extending in the front-rear direction on the body frame 11 via a pivot 31 whose axis is oriented in the left-right direction. A digging conveyer 32, which is a so-called bar conveyor, is mounted on the body 30, and a digging and raising blade 33 is attached to the starting end (front end) of the digging and conveyer 32 in a protruding manner. As shown in FIG. 7, an elevating cylinder 37 that expands and contracts in the front-rear direction is laterally provided between a cylinder stay 35 provided on the body frame 11 and an elevating arm 36 that stands upright from a middle part of the pivot 31. It is suspended, and a connecting piece 39 is interposed between the base end of the elevating arm 36 and the left and right extending pieces 30 a of the support frame 30. The excavating section 20 can be raised and lowered by an elevating cylinder 37, and the transport section 21 and the scraping section 22 are also configured to be moved up and down integrally with the excavating section 20.

  In the digging section 20 configured as described above, when harvesting the green onion N, the digging section 20 is appropriately lowered by the elevating cylinder 37, and the digging conveyer 32 is arranged in the inclined position of front low, rear high. At the same time, the tip half of the excavating blade 33 is arranged to be substantially horizontally adjacent to the field G surface. In such a state, the forward half of the excavating blade 33 enters the ridge U on which the green onion N is cultivated substantially horizontally forward with the forward running of the traveling machine 1, The green onion N is dug from directly below the rhizome Na of the green onion N, and the base half of the dug-up blade 33 transfers the green onion N to the rear upper side together with the earth mass. Then, the digged green onion N is transported rearward and upward while sliding on the upper surface of the base half of the digging blade 33, and the leaf portion Nb of the green onion N is sandwiched by the transport unit 21 described later and is raised upward. On the other hand, the rhizome Na of the green onion N on which the soil mass adheres is transferred from the base half of the excavating blade 33 to the excavating conveyor 32, and further conveyed by the excavating conveyor 32 to the rear and upward. At this time, the green onion N is conveyed upward and rearward while standing in the ridge U.

  The transport unit 21 is disposed immediately above the digging unit 20 and is arranged in a slanting manner in front and rear low heights in parallel with the digging conveyor 32 of the digging unit 20, and the middle part of the leek N in the erected posture that has been digged left and right sides. The paper is conveyed upward and rearward in a state of being pinched. That is, the transport section 21 is dug up via the pair of left and right front / rear support frames 40 and 41 and is disposed immediately above the conveyer 32 so as to be opposed in parallel. The transport unit 21 includes a pair of right and left transport bodies 42, 42 extending in the front-rear direction. The transport body 42 is formed by winding a transport belt 45 around a driven pulley 43 and a drive pulley 44 that are arranged at an interval in the front-rear direction. The forward and backward sides 45a, 45a of the conveyor belt, which conveys from the start end (front end) to the end (rear end) of the transport bodies 42, 42 facing left and right, are in face-to-face contact with each other. The belt outward path sides 45a, 45a sandwich the leaf portion Nb of the green onion N, and transport the green onion N rearward and upward in the sandwiched state.

  The left front support frame 40 extends in the up-down direction, and is interposed between the left portion of the digging conveyor 32 and the front portion of the left transfer body 42. Similarly, the right front support frame 40 extends in the up-down direction and is interposed between the right part of the excavating conveyor 32 and the front part of the right transport body 42. As shown in FIG. 7, a pair of left and right drive shaft cases 48, 48 that support a pair of left and right pulley drive shafts 85, 85 are provided on the left and right sides of a transmission horizontal shaft case that supports the transfer unit transmission horizontal shaft 170. Has been established. The left rear support frame 41 is interposed obliquely between the rear portion of the left transport body 42 and the left front portion of the body frame 11. Similarly, the right rear support frame 41 is disposed obliquely between the rear portion of the right transport body 42 and the right front portion of the body frame 11. Reference numeral 49 denotes a tension roller that elastically urges the forward side portion 45a of the transport belt.

  In the transport unit 21 configured as described above, the transport belt forward side portions 45a, 45a of the pair of left and right transport bodies 42, 42 sandwich the leaf portion Nb of the green onion N, and move the green onion N rearward and upward in the sandwiched state. Since the onion N is conveyed, the onion N is conveyed steadily upward and rearward in an upright posture in cooperation with the excavation conveyor 32 of the excavation section 20 that supports and conveys the rhizome Na of the onion N from below. be able to.

  The scraping unit 22 hangs the horizontal shaft case 50 extending in the left-right direction on the body frame 11, extends the chain case 51 from the right side of the horizontal shaft case 50 forward and downward, and A shaft case protrudes toward the left side (a front end portion), and a rotating body 54 is coaxially attached to a distal end portion of a rotating body support shaft 53 that is suspended in the shaft case. The rotating body 54 is formed of a cylindrical peripheral wall whose axis is oriented in the left-right direction, and left and right end walls that close the left and right end surfaces of the peripheral wall. The part is penetrated and attached. That is, the rotating body 54 is arranged with its axis directed in a direction orthogonal to the carrying direction of the carrying unit 21 and is rotatable around the axis via the rotating body support shaft 53.

  As shown in FIG. 8, on the outer peripheral surface of the peripheral wall of the rotating body 54, a large number of scraping projections 55 are radially projected at intervals in the circumferential direction and the axial direction. Numeral 55 changes the protruding height of each protruding piece 55 so that their tips are along the rhizome Na. In the present embodiment, eight protruding pieces 55 are protruded at equal intervals in the circumferential direction of the outer peripheral surface of the peripheral wall of the rotating body 54 to form a protruding piece unit, and are formed at equal intervals in the axial direction of the peripheral wall. Seven sets of this protruding piece unit are formed.

  Further, detachable scraping-off auxiliary members 56 are provided on the protruding pieces 55 at both ends in the axial direction. The scraping auxiliary member 56 is fixed to the protruding piece 55 with a bolt or the like. The scraping-off auxiliary member 56 is made of a rubber plate material, and can efficiently scrape off the clumps of soil attached to the rhizome Na without damaging the green onion N.

  The posture changing / aligning unit 23 inherits the green onion N conveyed rearward and upward in the standing posture by the conveying unit 21 at a position immediately behind the conveying unit 21 and inclines the inherited green onion N outward from the standing posture. The onion N is arranged so that the posture is changed to the tilted posture and aligned so that the green onion N is conveyed toward the rear upper side (the rear upper left side in the present embodiment) while changing the posture and aligning.

  That is, the posture changing / aligning unit 23 is configured by arranging a pair of right and left transfer bodies 80, 80 extending in the front-rear direction so as to have a low front-rear height and a rear end portion facing leftward outward. I have. The transfer body 80 is formed by winding a transfer belt 83 around a drive pulley 81 (see FIG. 7) and a driven pulley 82 (see FIG. 6) which are arranged at an interval in the front-rear direction. The transfer belts 83a, 83a, which transfer from the start end (front end) to the end (rear end) of the two transfer bodies 80, 80a, 80b, 80b, 80b, are brought into face-to-face contact with each other. The drive pulleys 81, 81 are arranged with their axes directed vertically, while the driven pulleys 82, 82 are arranged with their axes tilted in a left-right, right-low inclining direction (eg, 45 °). The transfer belts 83a, 83a are brought into surface contact with each other in a twisted manner. The drive pulley 44 of the left transfer body 42 and the drive pulley 81 of the left transfer body 80 are connected to the upper end and the middle of a left pulley drive shaft 85 that is vertically oriented as shown in FIG. Mounted coaxially. The drive pulley 44 of the right transport body 42 is connected to the upper end of the right pulley drive shaft 85, which is vertically oriented with an axis line, via a chain case. , The pulley drive shaft 85 on the right side. Then, the posture changing / aligning unit 23 that has inherited the green onion N from the terminal end of the transport unit 21 holds the leaf portion Nb of the green onion N between the transfer belt outward path side portions 83a, 83a, and also holds the green onion N in the held state. They are aligned while changing the posture from the standing posture to the tilting posture, and are conveyed to the rear upper left side. Reference numeral 87 denotes an auxiliary transfer belt that conveys the green onion N while holding the tip of the green onion N conveyed by the posture changing / aligning unit 23 so as not to hang down.

  In the posture changing / arranging unit 23 configured as described above, since the conveying posture of the green onion N can be changed from the standing posture to the inclined posture, the green onions N are sequentially and steadily collected and collected in the collecting unit 25 described later. Can be stored.

  At the rear lower position of the posture changing / arranging unit 23, a rectangular plate-shaped collecting unit 25 for collecting the green onions N is disposed, and the green onions N whose posture has been changed / aligned by the posture changing / aligning unit 23 are collected. To be collected. Then, the front edge of the collecting unit 25 is disposed below the end of the posture changing / arranging unit 23, and the green onion N transported by the posture changing / arranging unit 23 is dropped onto the collecting unit 25 and collected. They are being stored.

  A pair of left and right ridge breaking parts 60, 60 which are a part of the harvesting part 2 are arranged in front of the digging part 20. The ridge breakers 60, 60 break both shoulders of the ridge U to reduce the entry resistance of the subsequent digging section 20, so that the digging section 20 can perform the digging work smoothly.

  The ridge breaking units 60 and 60 and the transporting unit 21 are configured to pivotally support the rear end of the traveling machine 1 and move up and down the front end. The ridge breaks 60 are supported by the horizontal shaft case 50 by shaft supports 60a provided at the rear end. Similarly, the rear end of the transport unit 21 is supported by the horizontal shaft case 50. As described above, the horizontal shaft case 50 is disposed behind the excavation portion 20, and corresponds to the ridge breaking portions 60, 60 and the pivot portion of the transporting portion 21. Further, since the ridge breakers 60 are connected to the transport unit 21 by a pair of front and rear mounting plates 60b, 60b, they are moved up and down integrally with the transport unit 21. The mounting holes for mounting the mounting plates 60b, 60b to the transport unit 21 with bolts or the like are elongated holes, and the mounting angle of the ridge breakers 60, 60 with respect to the transport unit 21 can be adjusted.

  The ridge breakers 60, 60 include ridge breakers 61, 61 for breaking the ridge U from both sides. The ridge breaking rotors 61 have disk-shaped mounting disks 62, 62, and a plurality of ridge breaking claws 63, 63 mounted on the mounting disks 62, 62. The plurality of ridge breaking claws 63, 63 project from the mounting disks 62, 62 at regular intervals in the circumferential direction. In the present embodiment, six ridge breaking claws 63, 63 are attached to the respective mounting disks 62, 62. The ridge breaking rotors 61, 61 rotate around rotation axes perpendicular to the plate surfaces of the mounting disks 62, 62. The left and right ridge breaking rotors 61 are arranged so as to have an inverted "C" shape when viewed from the front so that the distance between them becomes smaller toward the lower side.

  As shown in FIG. 2, the ridge breaking portions 60, 60 include rotor rotating shafts 64, 64 for rotating the ridge breaking rotors 61, 61. The rotor rotating shafts 64, 64 extend outward from the centers of the mounting disks 62, 62 to the left and right. The rotor rotation shaft 64 is housed in a gear case 65. The rotor rotation shaft 64 protrudes left and right inward from the gear case 65, and has a ridge collapsed at its tip to support the mounting disk 62 of the rotor 61.

  The base breaks (lower ends) of the first drive cases 66, 66 extending upward are attached to the left and right sides of the horizontal shaft case 50. The base end (rear end) of the second drive case 67, 67 extending forward is attached to the front end (upper end) of the second drive case 67, 67, and is attached to the front end (front end) of each second drive case 67, 67. A gear case 65 is attached. Gear cases 68, 68 are provided at both left and right ends of the horizontal shaft case 50, and gear cases 69, 69 are provided at the distal ends of the first drive cases 66, 66.

  The second drive cases 67, 67 extend forward along the transport unit 21. More specifically, the second drive cases 67, 67 are disposed on the left and right outer sides of the transport section 21 in a front-low-back-high inclination so as to be substantially parallel to the transport belt 45. The first drive cases 66, 66 are arranged substantially perpendicularly to the second drive cases 67, 67 in side view.

  The left and right rotor rotating shafts 64, 64 rotate by receiving the rotational driving force of the second rotor driving shafts 72, 72 housed in the second driving cases 67, 67 (see FIG. 2). In the gear cases 65, 65, the gear connection portions of the rotor rotation shafts 64, 64 and the second rotor drive shafts 72, 72 are housed. As the gear connecting portion, for example, a bevel gear is used.

  The left and right second rotor drive shafts 72, 72 rotate by receiving the rotational driving force of the first rotor drive shafts 71, 71 housed in the first drive case 66 (see FIG. 2). In the gear cases 69, 69, the gear connection portions of the second rotor drive shafts 72, 72 and the first rotor drive shafts 71, 71 are housed. As the gear connecting portion, for example, a bevel gear is used.

  The left and right first rotor drive shafts 71, 71 rotate by receiving the rotational driving force of the drive output shaft 70 housed in the horizontal shaft case 50 (see FIG. 2). The drive output shaft 70 has the left-right direction as the axial direction. The gear case 68 houses a gear connection portion between the drive output shaft 70 and the first rotor drive shafts 71, 71. As the gear connecting portion, for example, a bevel gear is used.

  As described above, the rotor driving mechanism for transmitting the driving force to the ridge breaking rotors 61 includes the first rotor driving shafts 71, 71, the second rotor driving shafts 72, 72, and the rotor rotating shafts 64, 64. .

  According to the above configuration, the first drive cases 66, 66 for accommodating the first rotor drive shafts 71, 71 and the second drive cases 67, 67 for accommodating the second rotor drive shafts 72, 72 are on the side of the excavating conveyor 32. Since it is not disposed on the side, mud does not easily accumulate on the excavating conveyor 32, and the mud does not adhere to the harvested product.

  Further, the ridge breaking portions 60, 60 are provided with rotor covers 73, 73 that cover the upper side and the left and right outer sides of the ridge breaking rotors 61, 61. The rotor covers 73, 73 prevent scattering of mud generated when the ridges are broken by the ridge breaking rotors 61, 61.

  The rotor covers 73, 73 are provided above the ridge breaking rotors 61, 61. More specifically, as shown in FIGS. 9 and 10, the rotor covers 73, 73 are supported pipes 74, 74 fixed to the second drive cases 67, 67 above the ridge breaking rotors 61, 61. (Corresponding to a support portion) in a suspended state. The support pipes 74, 74 are substantially L-shaped, and are provided so as to extend upward so as to branch off from the second drive cases 67, 67, and then extend forward. By supporting the rotor covers 73 in a state of being lifted from above, since there is no supporting portion on the side of the ridge breaking rotors 61, mud can be smoothly discharged.

  The rotor covers 73, 73 include an upper cover portion 731 that covers the upper side of the ridge breaking rotors 61, 61, and a side cover portion 732 that is attached to the upper cover portion 731 and covers the left and right outer sides of the ridge breaking rotors 61, 61. ing.

  The upper cover portion 731 includes a base cover 731a supported by the support pipe 74, and a front rotation cover 731b and a rear rotation cover 731c that are vertically rotatably connected to the base cover 731a. That is, the upper cover portion 731 has a form divided into three front and rear parts. The front rotation cover 731b is provided on the front side of the base cover 731a via a hinge 731d, and the rear rotation cover 731c is provided on the rear side of the base cover 731a via a hinge 731e.

  The side cover portion 732 is, like the upper cover portion 731, divided into three front and rear portions, and has a central side cover 732a attached to the base cover 731a, and a front side cover attached to the front rotation cover 731b. 732b, and a rear side cover 732c attached to the rear rotating cover 731c.

  The side cover portion 732 is made of a rubber plate and is deformable. At least the central side surface cover 732a of the side cover portions 732 has a shape holding member 733 for holding the shape of a rubber plate material. The shape holding member 733 is provided along the back surface (the surface facing the ridge breaking rotor 61) of the central side surface cover 732a. The shape holding member 733 is an elongated strip-shaped metal plate material, and the shape holding member 733 can be plastically deformed to hold the central side cover 732a in an arbitrary shape. Thus, the mounting angle of the center side cover 732a with respect to the upper cover portion 731 can be changed. As a result, the mounting angle of the central side surface cover 732a can be adjusted according to the scattering direction or the amount of discharge of the mud.

  Two form holding members 733 are provided before and after the central side cover 732a. Note that the shape holding member 733 is provided at least on the central side cover 732a, but may also be provided on the front side cover 732b and the rear side cover 732c.

  A pair of left and right gauge wheels 90, 90 are provided in front of the harvesting unit 2. The left and right gauge wheels 90, 90 are for determining the height of the front end of the harvesting section 2 with respect to the ground, and run the traveling machine body 1 along the ridge U in a state of contacting the left and right sides of the ridge U.

  The gauge wheels 90, 90 are supported by a gauge wheel support frame 91 attached to the transport unit 21. The gauge wheel support frame 91 extends from left and right support arms 92, 92 attached to the transport unit 21, a gate-shaped guide frame 93 in a front view, and front ends of the left and right support arms 92, 92. Gauge arm support arms 94, 94.

  The left and right support arms 92, 92 are formed of pipe-shaped members, and have a base end fixed to the transport unit 21 and a front end extending forward. The front portions of the support arms 92, 92 extend substantially horizontally. The guide frame portion 93 is formed of a pipe-shaped member, and both ends thereof are fixed to the front central portions of the left and right support arms 92, 92, and are provided so as to straddle the front end of the transport portion 21 left and right. Have been.

  The gauge wheel support arms 94 are provided to be inclined downward from the front ends of the support arms 92. The gauge wheel support arm portions 94, 94 include a gauge wheel support arm member 95, 95 fixed to each support arm portion 92, 92, and a gauge wheel support member attached to the lower end of each gauge wheel support arm member 95, 95. 96, 96.

  The gauge wheel support arm members 95, 95 are provided so as to be expandable and contractable by operation of rotary handles 95a, 95a provided at the upper ends thereof, whereby the height of the left and right gauge wheels 90, 90 can be adjusted. ing.

  The gauge wheel support members 96, 96 rotatably support the gauge wheels 90, 90. The left and right gauge wheels 90, 90 are supported in an inclined manner so as to form an inverted "C" shape when viewed from the front of the machine so that the interval between them becomes smaller toward the lower side. The gauge wheel support members 96, 96 are attached to the gauge wheel support arm members 95, 95 so as to be rotatable up and down. Thereby, when loading the onion harvesting machine A on the truck, the gauge wheel supporting members 96, 96 are rotated upward and stored together with the gauge wheels 90, 90 (see FIG. 2), so that the onion harvesting machine A is mounted. The overall length can be reduced.

[Other embodiments]
In the above-described embodiment, the second drive cases 67, 67 extend forward along the transport unit 21, but are not limited thereto. The second drive cases 67, 67 do not necessarily have to be arranged adjacent to the left and right outer sides of the transport unit 21, and the first drive cases 66, 66 and the second drive cases 67, 67 are dug up in a side view. What is necessary is just to arrange so that it may not overlap with the space between the conveyor 32 and the conveyance part 21. That is, the second drive cases 67, 67 do not need to be disposed substantially parallel to the conveyor belt 45 on the left and right outer sides of the transfer unit 21, and the first drive cases 66, 66 are the second drive cases 66, 66 in side view. It is not necessary to be arranged substantially perpendicular to the drive cases 67, 67.

  As described above, the embodiments of the present invention have been described with reference to the drawings. However, it should be considered that the specific configuration is not limited to these embodiments. The scope of the present invention is shown not only by the description of the embodiment but also by the claims, and further includes meanings equivalent to the claims and all changes within the scope.

Reference Signs List A green onion harvester N green onion Na rhizome Nb leaf 1 running machine 2 harvesting unit 10 running unit 11 body frame 20 excavating unit 21 transporting unit 22 scraping unit 32 excavating conveyer 60 embankment unit 61 embankment rotor 64 rotor rotating shaft 66 First drive case 67 Second drive case 70 Drive output shaft 71 First rotor drive shaft 72 Second rotor drive shaft 73 Rotor cover 731 Upper cover portion 732 Side cover portion 733 Form holding member 74 Support pipe

Claims (4)

A green onion harvesting machine equipped with a harvesting unit that digs up and harvests green onions from the ridge where green onions are grown on a self-propelled traveling machine,
The harvesting part is a digging part for digging green onions, a conveying part for sandwiching and transporting the green onion digged by the digging part, and ridges provided on the left and right sides in front of the digging part to break ridges from both sides. A ridge breaking portion having a breaking rotor,
The ridge breaking portion is configured to be able to move up and down integrally with the digging portion and the transporting portion, with a rear portion of the digging portion as a pivot portion,
A rotor driving mechanism for transmitting a driving force to the ridge breaking rotor, a first rotor driving shaft extending upward from a driving output shaft provided in the pivot portion and having a left-right direction as an axial direction, the first rotor driving shaft; A second rotor drive shaft extending forward from an upper end of the drive shaft and connected to the ridge breaking rotor.   The green onion harvester according to claim 1, wherein the second rotor drive shaft extends forward along the transport section. The ridge breaking portion includes a rotor cover that covers the upper side and the left and right outer sides of the ridge breaking rotor,
3. The green onion harvester according to claim 1, wherein the rotor cover is supported in a suspended state by a support portion that branches upward from a drive case housing the second rotor drive shaft and extends forward. 4. The rotor cover includes an upper cover portion suspended by the support portion and covering an upper side of the ridge breaking rotor, and a side cover portion attached to the upper cover portion and covering left and right outer sides of the ridge breaking rotor. ,
The green onion harvester according to claim 3, wherein an attachment angle of the side cover with respect to the upper cover is changeable.

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