JP2019216680A - Leek harvester - Google Patents

Abstract

To provide a leek harvester for, when digging sequentially leeks arranged in one row on a ridge for harvesting, transporting the leeks in the vicinity of a forefront part of the ridge to a rear side while holding the same on a transport part.SOLUTION: There is provided a leek harvester A comprising a self-propelled travel machine body 1, and a harvesting part 2 for digging leeks from a ridge U where leeks N are cultured to harvest the same. The harvesting part 2 comprises: a digging part 20 for digging the leeks N; transport parts 21 for holding the leeks N dug by the digging part 20, and transporting the leeks to the rear side; and transport auxiliary devices 210 provided on front end parts of the transport parts 21 and holding the leeks N on front end parts of transport parts 21.SELECTED DRAWING: Figure 9

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 Document 1 below describes a vegetable harvesting machine in which a traveling machine body is provided with a harvesting and conveying device including a pair of left and right sandwiching belts extending in the front-rear direction, and the sandwiching belt adjusts a clamping force at a start end portion thereof. It is configured to be possible. As a result, the pair of left and right sandwiching belts maintains an appropriate sandwiching force at the start end portion, the middle portion, and the end portion, and securely sandwiches the vegetables in all the transporting processes and applies force or drops off. Has been prevented.

  By the way, when leeks lined up in a row on a ridge are sequentially dug up and harvested, the onion to be harvested usually does not fall forward with the support of the leeks in front of it, so that a conveyor belt (Patent Document 1) Green onion can be conveyed by the holding belt. However, the green onion near the forefront of the ridge loses or lacks the support of the green onion in the front, so that it falls forward, and the green onion cannot be properly clamped by the transport belt. Therefore, only the green onions near the forefront of the ridge are manually harvested by the operator. The vegetable harvesting machine disclosed in Patent Document 1 adjusts the clamping force at the start end of the conveyor belt, and does not enable the conveyor belt to clamp green onions near the forefront of the ridge.

JP 2000-60249 A

  In view of the above-described problems, the present invention provides a green onion harvesting machine capable of holding a green onion near the forefront of a ridge by a transport unit and transporting the green onion in a row when sequentially digging and harvesting green onions arranged in a row on a ridge. The purpose is to provide.

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 nipping and squeezing the green onion dug by the digging part, and provided at a front end of the conveying part, and a front end part of the conveying part. And a transport assist device capable of holding the green onion N.

In the present invention, the transport unit has a pair of left and right transport belts extending in the front-rear direction,
The transport assist device may adjust a distance between front ends of the transport belt.

  Further, in the present invention, the transport assisting device is configured such that, by an operation of an operation unit behind the transport unit, a transport posture in which front ends of the transport belt are brought close to each other to clamp green onions, and a front end of the transport belt is transported. It may be configured such that the posture can be changed to a non-conveying posture in which the green onion is not squeezed away.

  Further, in the present invention, the transport assist device includes a movable pulley provided at a front end of the transport unit to support the transport belt, and a rotating arm having the movable pulley attached to a distal end thereof, The posture change may be performed by rotating the rotating arm in the left-right direction with the base end as a fulcrum.

  According to the present invention, when sequentially digging and harvesting green onions lined up in a row on the ridge, the transport assisting device enables the green onions located near the forefront of the ridge to be sandwiched between the front ends of the transport section. The green onion in the vicinity of the foremost portion can be conveyed backward while being clamped by the conveyance unit.

Perspective view of the green onion harvester of the first embodiment Left side view of the green onion harvester of the first embodiment Right side view of the green onion harvester of the first embodiment Top view of the green onion harvester of the first embodiment Front view of the green onion harvester of the first embodiment Rear view of the green onion harvester of the first embodiment Longitudinal sectional view of the green onion harvester of the first embodiment FIG. 4 is a view of the transport unit according to the first embodiment as viewed obliquely from the upper front. FIG. 4 is a view of the transport unit according to the first embodiment as viewed from the left side. Schematic diagram for explaining a change in the posture of the transport assist device Schematic diagram for explaining the operation mechanism of the transport assist device Side view showing the operation lever area Perspective view of the scraping part Perspective view of rotor cover FIG. 4 is a view of the transport unit according to the second embodiment as viewed obliquely from above and forward. FIG. 5 is a view of the transport unit according to the second embodiment as viewed from the left side. View of the transport unit of another embodiment viewed obliquely from above Side view showing the periphery of the operation lever of another embodiment View of the transport unit of another embodiment viewed obliquely from above View of the transport unit of another embodiment viewed from the left

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
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.

  FIG. 8A is a diagram of the transport unit 21 as viewed obliquely from the upper front, and FIG. 8B is a diagram of the transport unit 21 as viewed from the left side.

  At the front end of the transport unit 21, a transport assisting device 210 is provided that enables the front ends of the transport unit 21 to hold the green onion N. 1 to 7 do not show the transport assist device 210 for convenience of explanation. The transport assist device 210 can adjust the distance between the front ends of the transport belts 45, 45. More specifically, the transport assisting device 210 can adjust the distance between the driven pulleys 43, 43 (corresponding to movable pulleys) arranged at the front ends of the transport bodies 42, 42.

  The transport assist device 210 includes driven pulleys 43, 43, and rotating arms 211, 211 having the driven pulleys 43, 43 attached to the distal ends. The rotating arm 211 is disposed inside the transport belt 45. The turning arms 211 and 211 can turn in the left and right directions around turning shafts 212 and 212 fixed to the base end and extending in the up and down direction. By rotating the rotating arms 211 and 211 left and right, the distance between the driven pulleys 43 and 43 can be changed.

  As shown in FIG. 9A, normally, the driven pulleys 43 are separated from each other, and in the front part of the transport bodies 42, the transport belt outward path side parts 45a, 45a are spaced closer to each other toward the front. It is arranged to be V-shaped in plan view so as to be wide. At this time, since the front ends of the conveyor belts 45, 45 are farther than the width (thickness) of the green onion N, the front ends of the conveyor belts 45, 45 do not pinch the green onion N (posture at this time). Is referred to as “non-transporting posture”). On the other hand, as shown in FIG. 9B, the driven pulleys 43 are brought closer to each other, and the front ends of the conveyor belts 45, 45 are brought closer to each other. (The posture at this time is referred to as a “transport posture”).

  The transport assist device 210 is configured to be able to change the attitude between the transport attitude and the non-transport attitude by the operation of the operation unit 14 behind the transport unit 21. The operation by the operation unit 14 is performed by reciprocating the connecting rod 214 back and forth by an operation lever 215 described later.

  The rotating shafts 212 extend in the up-down direction and protrude upward from the transport bodies 42, 42, and the upper ends thereof support the operation arms 213, 213. The operation arms 213 and 213 have their base ends fixed to the rotating shafts 212 and 212 and their front ends connected to connection rods 214 and 214 extending from the rear. By moving the connecting rods 214 back and forth, the operation arms 213 and 213 rotate in the front-rear direction about the rotation shafts 212 and 212 together with the rotation shafts 212 and 212. The rotation of the rotation shafts 212 and 212 causes the rotation arms 211 and 211 to rotate in the left-right direction. Thus, the distance between the driven pulleys 43 can be changed to change the posture between the conveyance posture and the non-conveyance posture. A tension roller 217 elastically urges the return side 45b of the transport belt. The tension roller 217 is urged right and left outward by a compression spring 217a.

  FIG. 10 shows an operation mechanism for operating the transport assist device 210. FIG. 11 is a side view showing the periphery of the operation lever 215. The operation lever 215 is provided on the operation unit 14 arranged on the upper right side of the traveling body 1. The base end side of the operation lever 215 is rotatably supported on a base 215a of the operation unit 14 by a support shaft 215b so as to be rotatable in the front-rear direction. The support shaft 215b extends in the left-right direction and is connected to the interlock lever 216 at the left end, and the operation lever 215 and the interlock lever 216 rotate integrally.

  A rear end of the left connecting rod 214 is rotatably connected to a front end of the interlocking lever 216, and a rear end of the right connecting rod 214 is rotatably connected to a middle part of the operation lever 215. I have. A spring 215c is stretched between the distal end of the operation lever 215 from the support shaft 215b and the base 215a below the support shaft 215b. The spring 215c rotates the operation lever 215 forward and backward by the restoring force when the spring direction of the spring 215c exceeds the dead center of the support shaft 215b. By rotating the operation lever 215 and the interlocking lever 216 forward and backward, the left and right connecting rods 214 are moved forward and backward. Accordingly, the left and right rotating arms 211 and 211 rotate in the left and right direction, and the distance between the driven pulleys 43 can be changed to change the posture between the conveyance posture and the non-conveyance posture. When the operation lever 215 is rotated forward, the transport assist device 210 is in the transport position, and when the operation lever 215 is rotated backward, the transport assist device 210 is in the non-transport position.

  When the onions N lined up in a row on the ridge U are sequentially dug and harvested, the operator normally operates the non-transporting posture of the transport assisting device 210 to harvest the green onions N located near the forefront of the ridge U. By operating the lever 215, the posture of the conveyance assist device 210 is changed to the conveyance posture. By setting the conveyance assisting device 210 to the conveyance posture, the green onions N are conveyed while being sandwiched between the front ends of the conveyance belts 45 and 45 before the green onions N located near the forefront of the ridge U fall forward. Will be able to do it. The posture change of the transport assisting device 210 can be performed when the transport unit 21 is driven so that the green onion N can be transported while being sandwiched between the front ends of the transport belts 45 and 45.

  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. 12, 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 with bolts or the like are elongated holes, so that 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 FIG. 13, the rotor covers 73, 73 support pipes 74, 74 (support portions) fixed to the second drive cases 67, 67 above the ridge collapse rotors 61, 61. ) 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. Thus, the mounting angle of the center side cover 732a can be adjusted according to the scattering direction or discharge amount 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.

[Second embodiment]
In the above-described first embodiment, the mechanism for adjusting the distance between the front ends of the transport belt 45 is described as the transport assist device 210, but the present invention is not limited to this. The transport assist device 210 may be a mechanism that supports the green onion N located near the forefront of the ridge U from the front. 14A and 14B show a transport assist device 210 according to another embodiment.

  The transport assist device 210 includes support arms 222, 222 that rotate in the front-rear direction about the rotation shafts 221, 221. By pivoting the support arms 222, 222 in the front-rear direction, the transport assist device 210 moves the support arms 222, 222 into a retracted position (shown by a solid line in FIG. 14A) in which the support arms 222, 222 are arranged along the front-rear direction. , 222 can be changed to a supporting posture (indicated by a two-dot chain line in FIG. 14A) arranged along the left-right direction.

  The rotating shafts 221 and 221 extend in the up and down direction, and upper ends thereof support the support arms 222 and 222, and intermediate portions support the operation arms 223 and 223, and the support arms 222 and 222 and the operation arm 223. , 223 rotate integrally. The operation arms 223 and 223 have their base ends fixed to the rotating shafts 221 and 221 and their front ends connected to connection rods 214 and 214 extending from the rear. By moving the connecting rods 214 back and forth, the operation arms 223 and 223 rotate in the front-rear direction about the rotation shafts 221 and 221 together with the rotation shafts 221 and 221. The rotation of the rotation shafts 221 and 221 causes the support arms 222 and 222 to rotate in the front-rear direction, so that the conveyance assist device 210 can change the posture between the evacuation posture and the support posture. 11 can be used as the operation lever 215. When the operation lever 215 is rotated forward, the transport assist device 210 is in a retracted posture, and when the operation lever 215 is rotated backward, the transport assist device 210 is It becomes a support posture.

  When the onions N lined up in a row on the ridge U are sequentially dug and harvested, usually the transport assisting device 210 is set in the retracted posture, and when harvesting the green onions N located near the forefront of the ridge U, the operator operates the operating lever. 215 is operated to change the posture of the transport assist device 210 to the supporting posture. By setting the transport assisting device 210 in the supporting posture, the green onions N are supported by the support arms 222 and 222 from the front, and the green onions N are transported to prevent the green onions N located near the forefront of the ridge U from falling forward. 45 and 45 can be conveyed while being held between the front end portions.

  Note that the transport assist device 210 may be provided with the support arm 222 on only one of the left and right sides as shown in FIG.

[Other embodiments]
(1) The structure for operating the connecting rod 214 by the operation lever 215 is not limited to the structure shown in FIG. For example, a structure as shown in FIG. 16 may be used. In this example, when the operation lever 215 is rotated backward, the transport assist device 210 is in the transport position, and when the operation lever 215 is rotated forward, the transport assist device 210 is in the non-transport position.

  (2) FIGS. 17A and 17B show a transport assist device 210 according to another embodiment. The transport assist device 210 includes support arms 222, 222 that rotate in the front-rear direction about the rotation shafts 221, 221. By rotating the support arms 222, 222 in the front-rear direction, the transport assisting device 210 moves the support arms 222, 222 in a retracted posture (shown by a solid line in FIG. 17A) in which the support arms 222 are arranged along the front-rear direction. , 222 can be changed to a supporting posture (shown by a two-dot chain line in FIG. 17A) arranged along the left-right direction.

  The rotating shafts 221 and 221 extend in the up-down direction, and the upper ends thereof support the support arms 222 and 222, and the middle portions support the driven gears 224 and 224, and the support arms 222 and 222 and the driven gear 224. , 224 rotate integrally. The driven gears 224, 224 mesh with the driving gears 225, 225. The drive gears 225 and 225 rotate around a rotation shaft 226. The drive gears 225 and 225 have a rotation shaft 226 fixed at the center, and connection rods 214 and 214 are connected to left and right outer sides of the rotation shaft 226. By moving the connecting rods 214 back and forth, the drive gears 225 and 225 rotate, and accordingly, the driven gears 224 and 224 also rotate. The rotation of the driven gears 224 and 224 causes the support arms 222 and 222 to rotate in the front-rear direction, so that the conveyance assist device 210 can change the posture between the retracted posture and the support posture. Also in this example, the transport assisting device 210 may be provided with the support arm 222 on only one of the left and right.

  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 14 operating unit 20 excavation unit 21 transfer unit 43 driven pulley 45 transfer belt 210 transfer assist device 211 rotating arm 214 connecting rod 215 Operation lever

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 nipping and squeezing the green onion dug by the digging part, and provided at a front end of the conveying part, and a front end part of the conveying part. A leek harvester, comprising: a transport auxiliary device capable of holding a green onion. The transport section has a pair of left and right transport belts extending in the front-rear direction,
The green onion harvester according to claim 1, wherein the transport assist device adjusts a distance between front ends of the transport belt.   The transport assisting device is configured such that, by the operation of the operation unit behind the transport unit, the transport posture in which the front ends of the transport belt are brought close to each other and the green onion is sandwiched, and the front ends of the transport belt are moved away from each other and the green onion is not sandwiched. The onion harvester according to claim 2, wherein the onion harvester is configured to be able to change its posture to a non-conveying posture. The transport assisting device includes a movable pulley provided at a front end of the transport unit to support the transport belt, and a pivot arm having the movable pulley attached to a distal end, and the pivot arm being a base end. The green onion harvester according to claim 3, wherein the posture change is performed by rotating the part in a left-right direction about a fulcrum.

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