JP2016086642A - Leek harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leek harvester that can prevent the sagging of a leek and the interference with the other object.SOLUTION: As each working unit, a harvest unit comprises: a digging-up unit for digging up a leek; a conveyance unit for holding the middle of the leek dug up by the digging-up unit and conveying the leek held toward a rear upper part as in a standing posture; and a posture change/alignment unit for taking over the leek conveyed in the standing posture from the terminal of the conveyance unit, holding the middle of the leek taken, and changing the posture of the leek held and aligning it from the standing posture to an inclined posture inclined to the outside. The posture change/alignment unit is configured to convey the leek from a traveling machine body toward the outside rear being gradually separated at one side of the traveling machine body while performing the posture change/alignment of the leek. In the leaf side and the rhizome side of the leek held in the middle by the posture change/alignment unit, a leaf side guide and a rhizome side guide extending along the posture change/alignment unit are disposed, respectively, and the leaf side and the rhizome side of the leek is guided from the lower part by each guide.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a green onion harvester, and more specifically, a middle part of a green onion is sandwiched between a pair of conveyor belts, the green onion is changed from a standing posture to a recumbent posture and aligned, and the green onion droops or interferes with other objects It relates to a leek harvesting machine that can avoid.

  Conventionally, as one form of a leek harvesting machine, there is one disclosed in Patent Document 1, which enables a series of harvesting operations until each leek is harvested by arranging each working unit on the machine body. An onion harvester is disclosed. That is, the green onion harvesting machine disclosed in Patent Literature 1 is a work unit that conveys the digging portion that digs up the green onion from the straw that cultivates the green onion, and the leek digging up in the digging up portion to the rear in an upright position. It includes a first transport unit, a second transport unit that inherits the green onion transported in a standing posture from the terminal end of the first transport unit, and transports the inherited green onion into a lying posture. The second transport unit is disposed above the front part of the machine body, sandwiches the middle part of the green onion between the pair of transport belts, and changes the position of the green onion from the standing posture to the recumbent posture and aligns the green onion. ing.

JP 2003-310021 A

  However, in the second transport unit that changes the onion with the midway part sandwiched from the standing posture to the recumbent posture, if the center of gravity of the green onion is not firmly held, the leaf or rhizome side of the green onion hangs down and hangs down. Parts can interfere with other objects in the aircraft. In such a case, the onion may not be aligned due to its lying posture, which may require a separate onion alignment work, reducing the harvesting work efficiency, and damaging the part of the leek that interferes with other objects. The commercial value may be reduced.

  Accordingly, an object of the present invention is to provide a leek harvesting machine that can avoid the sag of leek and interference with other objects.

The invention described in claim 1
It is a leek harvesting machine equipped with a harvesting part that digs up and harvests green onions from the straw that cultivates green onions on a self-propelled traveling machine body,
The harvesting unit, as each working unit, sandwiches the digging up part that digs up the green onion, the intermediate part of the green onion digging up by the digging up part, and the conveyance part that conveys the squeezed green onion to the rear upper side in the standing posture, Attach the green onion transported in the standing posture from the terminal end of the head part, hold the middle part of the inherited green onion, change the posture and align it to the tilted posture tilted outward from the standing posture An alignment section;
The posture change / alignment unit conveys the onions toward the outer rear gradually separated from the traveling machine body on one side of the traveling machine body while changing the posture / alignment.
A leaf side guide body and a rhizome side guide body extending along the posture change / alignment part are arranged on the leaf part side and the rhizome part side of the green onion in which the midway part is sandwiched by the posture change / alignment part, respectively. In addition, the leaf part side and the rhizome part side of the green onion are guided from below by each guide body.

  According to the first aspect of the present invention, the posture changing / aligning portion is conveyed toward the outer rear side gradually separated from the traveling vehicle body on one side of the traveling aircraft while changing the posture and aligning the green onion, and the posture changing / aligning portion A leaf-side guide body and a rhizome-side guide body extending along the posture changing / alignment section are disposed on the leaf part side and the rhizome part side of the green onion sandwiched in the middle, respectively, and each guide body Because the leaf side and rhizome side of the green onion are guided from below, the green leaf side and rhizome side can be prevented from sagging and the posture is changed from the standing posture to the tilted posture. The green onion that is conveyed toward the outer rear gradually separated from the traveling machine body on one side of the traveling machine body does not interfere with other objects of the traveling machine body. In this way, since it is possible to avoid sagging scallions and interference with other objects, it is possible to ensure good harvest efficiency and commercial value of scallions.

Invention of Claim 2 is invention of Claim 1, Comprising:
The leaf part side guide body and the rhizome part side guide body are formed by extending from the start end part to the end part of the posture change / alignment part,
The end part of each guide body is a projecting end part projecting rearward and downward, a collecting part is arranged below both projecting end parts, and the green onions conveyed by the attitude changing / aligning part are collected part It is characterized by being dropped and collected.

  In the invention according to claim 2, the leaf portion side guide body and the end portion of the rhizome portion side guide body formed by extending from the starting end portion to the terminal end portion of the posture changing / aligning portion, respectively, projecting downward and rearward Since the collecting part is arranged under the protruding end part and the leek conveyed by the posture changing / aligning part is dropped and collected on the collecting part, it is harvested. Onions are collected by the collection department steadily.

The invention according to claim 3 is the invention according to claim 2, wherein the base end portion of the extending guide body for guiding the green onion onto the collecting portion is attached to the protruding end portion of the leaf side guide body, and the extending portion is extended. The exit guide body is characterized in that it can be retracted and rotated upward about its base end.

  In the third aspect of the present invention, when the attitude change / alignment unit is attached to the traveling machine body so as to be able to be moved up and down, when the collection unit is fixed to the traveling machine body, The extension guide body located behind the moving fulcrum may descend and collide with the collecting part, but the extension guide body is retractable and pivotable upward about its base end. In addition, the extension guide body can be prevented from being damaged by retreating and rotating with respect to the collection unit.

The invention according to claim 4 is the invention according to claim 2, wherein the leaf-side guide body extends along the posture changing / aligning portion and has a pair of guide pieces facing each other with a space in the front-rear direction. A connecting piece for connecting the middle portions of both guide pieces,
The end portion of each guide piece forms a protruding end portion that protrudes rearward and downward,
The extension guide body is formed in a U shape, and both base end portions of the extension guide body are attached to a pair of front and rear projecting end portions, and the extension guide body is upwardly centered on both base end portions. It is characterized in that it can be retracted and rotated freely.

  In the invention according to claim 4, the leaf portion side guide body extends along the posture changing / aligning portion, and a pair of guide pieces facing each other with a gap in the front-rear direction, and the middle portions of the two guide pieces. Since it has a connecting piece to be connected, the leaf portion side of the green onion can be widely and firmly supported from below and can be stably guided to prevent the leaf portion side from sagging. it can. The extension guide body is formed in a U-shape, and both base end portions of the extension guide body are attached to a pair of front and rear projecting end portions, and the extension guide body is located above the base end portions. Since the extending guide body is retracted and rotated with respect to the collecting portion, it is possible to prevent any damage from being caused.

  According to the present invention, when changing the posture of the leek that has been dug up, it is possible to avoid sagging of the leek and interference with other objects, so it is possible to ensure good harvest efficiency and commercial value of the leek. .

Explanatory drawing of the left side of the leek harvesting machine of this embodiment. Explanatory drawing of the right side of the leek harvesting machine of this embodiment. Plane explanatory drawing of the leek harvesting machine of this embodiment. Front explanatory drawing of the leek harvesting machine of this embodiment. The rear view of the leek harvesting machine of this embodiment. Cross-sectional left side explanatory drawing of the leek harvesting machine of this embodiment. Exploded view of each working part of the harvesting part. Front explanatory drawing of a crushed shoulder. Side surface explanatory drawing of a heel shoulder breaking part. Plane explanatory drawing of a leaf part side guide body and a rhizome part side guide body. Side surface explanatory drawing of a leaf part side guide body and a rhizome part side guide body. Explanatory drawing of a leaf part side guide body. The conceptual explanatory drawing of a power transmission mechanism.

  Embodiments of the present invention will be described below with reference to the drawings. That is, A shown in FIGS. 1 to 6 is a leek harvesting machine as the present embodiment, and the leek harvesting machine A has a leek N as a self-propelled traveling machine body 1 as shown in FIGS. A harvesting section 2 is provided for digging and harvesting green onions N from the straw U cultivating rice. In the present embodiment, the green onion N is a long green onion having a rhizome Na and a leaf Nb. First, the configuration of the traveling machine body 1 will be described, then the characteristic configuration of the harvesting unit 2 will be described, and subsequently, the configuration of the harvesting unit 2 will be described more specifically.

[Description of configuration of traveling aircraft]
In the traveling machine body 1, a machine body frame body 11 formed in a three-dimensional frame shape is installed between a pair of left and right crawler-type traveling parts 10 and 10. The engine 12 is mounted on the right rear portion of the body frame 11 so as to be positioned rearward and upward of the right traveling unit 10, and the mission case 13 is mounted on the left and right traveling units 10 at the lower part of the body frame 11. The transmission case 13 is linked to the engine 12 in an interlocking manner. On the upper right side of the machine body frame 11, an operation unit 14 for steering / shifting the traveling units 10, 10 and harvesting operation of the harvesting unit 2 is disposed. At the rear end of the machine body frame 11, a horizontal plate-like boarding step unit 24 on which the operator Op rides is provided behind each working unit of the harvesting unit 2, which will be described later, and the virtual unit shown in FIG. On the straight line L, it is arranged so as to project rearward. The virtual collinear line L is a virtual straight line extending in the front-rear direction at the central portion of the left-right width of the traveling machine body 1. 15 is a main transmission lever, 16 is a travel / work lever, 17 is a left side clutch lever, 18 is a right side clutch lever, and 19 is an accelerator lever.

  The boarding step part 24 includes a fixed-side step piece 94 in the front half part and a movable-side step in the latter half part in which the front end edge part is pivotally connected to the rear end edge part of the fixed side step piece 94 via a pivotal connection part 96. It consists of a piece 95. The fixed-side step piece 94 has a front end edge portion fixed to a step stay 97 provided at a lower end of the rear end of the machine body frame 11 so as to project horizontally toward the rear. The movable-side step piece 95 can be changed in posture by rotating it in the arrival direction around the pivot connecting portion 96 between a use posture that projects horizontally rearward and a non-use posture that stands up. Yes.

  The ground clearance of the boarding step unit 24, that is, the height from the lower surface where the traveling unit 10 is in contact with the ground to the lower surface of the boarding step unit 24 is set to a certain height or more (200 mm or more in this embodiment). doing. By doing so, even if the adhering soil of green onion N dropped by the digging part 20 and the scraping part 22 of the harvesting part 2 described later is deposited on the ridge U after the digging, the height of the sedimentary soil D is Since it is about 150 mm at the maximum, the traveling machine body 1 will not be disabled due to the height of the sediment D.

  In the traveling machine body 1 configured as described above, the horizontal plate-shaped boarding step unit 24 on which the operator Op is boarding is located behind each work unit of the harvesting unit 2 described later and on the virtual collinear line L. Since the rearward end portion of the frame body 11 is projected in a rearward direction, the operator Op rides on the boarding step portion 24 as will be described later, as shown in FIG. It is possible to stand at a position immediately behind the digging portion 20 and the conveying portion 21 that are arranged in parallel in a slanted shape with front and rear and rear heights spaced apart in the vertical direction.

  Therefore, the worker Op can obtain the harvested green onion N from the position immediately below the operator Op along the line of sight of the worker Op in the conveyance space between the digging unit 20 and the conveyance unit 21 and the conveyance space immediately above the conveyance unit 21. The conveyance in the direction approaching the worker Op can be steadily seen in the field of view of the worker Op viewing the front.

[Description of characteristic configuration in the harvesting section]
The harvesting unit 2 includes a pair of left and right shoulder crushing 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. Yes. The pair of left and right heel shoulder breaking portions 60, 60 breaks both shoulder portions of the heel U to reduce the entry resistance of the digging portion 20 into the heel U. The green onion N is cultivated in the ridge U in which the entry resistance is reduced in this way, and this green onion N is dug up by the dug-up unit 20. The transport unit 21 sandwiches the midway part of the leaf part Nb digged up by the digging part 20 and transports the squeezed green onion N in the upright position toward the rear upper side. The scraping unit 22 scrapes off the soil mass adhering to the rhizome portion Na of the green onion N transported by the transport unit 21. The posture change / alignment unit 23 inherits the green onion N conveyed from the terminal end of the conveyance unit 21 in an upright posture, and sandwiches the intermediate part of the inherited green onion N so that the green onion N is moved outward from the standing posture. It is conveyed toward one side rear upper side (in this embodiment, left rear upper side) while changing and aligning the posture to the tilted posture tilted forward.

  As shown in FIG. 7, the shoulder crushing portions 60, 60, the digging up portion 20, and the conveying portion 21 are pivotally supported by the base end portion (rear end portion) of the traveling machine body 1, and the tip end side is integrated. Can be moved up and down. Here, the shoulder breakers 60, 60 and the base end of the transport unit 21 are coaxially pivoted to the horizontal shaft case 50 that supports the working unit drive shaft 150 provided in the traveling machine body 1 with the axis line directed in the left-right direction. I support. The shoulder-shrinking portions 60, 60 and the conveyance portion 21 are configured such that the relative positions in the vertical direction of these tip side portions can be adjusted. Further, the digging part 20 and the transport part 21 can adjust the relative positions in the vertical direction of these tip side parts.

  More specifically, as shown in FIG. 7, the digging portion 20 has a pivot shaft with the base end portion of the support frame 30 facing the pivot bearing body 26 provided in the machine body frame frame 11 and the axis line in the left-right direction. The front end portion can be lifted and lowered by a lifting cylinder 37 described later.

  The transport unit 21 has a transport unit transmission case 177 that is linked to the base end of the transport unit 21 in a suspended state, and a horizontal axis case 50 that will be described later is connected to the rear of the transport unit transmission case 177 so as to be attached to the body frame frame 11. A horizontal shaft case 50 is pivotally supported on the provided horizontal shaft case support stay 58 so as to be rotatable about its axis. The transport unit 21 is linked to the starting end of the posture change / alignment unit 23, and the transport unit 21 and the posture change / alignment unit 23 are supported by the transport unit transmission case 177 via the transport support frame 46. Yes. That is, the transport unit 21 and the posture changing / aligning unit 23 are pivotally supported by the horizontal axis case support stay 58 via the horizontal axis case 50. Therefore, when the transport unit 21 moves up (down) with the horizontal axis case 50 as the center, the posture changing / aligning unit 23 moves down (up).

  Between the digging conveyor 32 described later provided in the front part of the digging part 20 and the continuous body 46a forming the front end part of the conveyance support frame 46 connected to the lower surface front end part of the conveyance part 21 in the vertical direction. A pair of left and right first vertical interval adjusters 200, 200 that can be adjusted to expand and contract in stages is provided, and the first vertical interval adjusters 200, 200 are expanded and contracted in the vertical direction to dig up. The relative position in the vertical direction between the front end portion of the conveyor 32 and the front end portion of the transport unit 21 can be adjusted.

  The first up-and-down interval adjusting body 200 opposes the first lower-side adjusting piece 210 erected upward from the digging conveyor 32 and the first upper-side adjusting piece 220 suspended from the connecting body 46a in the vertical direction. The upper and lower adjustment holes 230 and 240 are formed in the adjustment pieces 210 and 220 at intervals in the vertical direction, and the adjustment pieces 210 and 220 are appropriately overlapped on the inner and outer sides. In addition to surface contact with the state, the two adjustment holes 230 and 240 are matched, and the connection bolts 250 and 250 are inserted into the matched adjustment holes 230 and 240 so that they can be connected.

  The pair of left and right shoulder collapse parts 60, 60 are coaxially attached to the lateral shaft case 50 via forward extending shaft cases 61, 61 described later, and the front end side of each collar shoulder breaking part 60, 60 is The horizontal shaft case 50 is supported so as to be swingable about its axis.

  Between the front part of each front extending shaft case 61, 61 and the front part of the connecting body 46a, a pair of left and right second vertical distance adjusting bodies 300, 300 that can be expanded and contracted in a stepless manner in the vertical direction. Is installed. Each of the second vertical distance adjusting bodies 300 and 300 can adjust the vertical relative position between the front end portions of the shoulder breaker portions 60 and 60 and the front end portion of the conveyance portion 21 by adjusting the expansion and contraction in the vertical direction. Yes.

  The second vertical distance adjusting body 300 includes a second lower side adjusting piece 310 erected upward from the front extending shaft case 61 and a second upper side adjusting piece 320 vertically suspended from the connecting body 46a. It is arranged to face. The second lower adjustment piece 310 is formed with a pair of front and rear elongated holes 330, 330 extending in the vertical direction, while the second upper adjustment piece 320 is formed with a pair of front and rear adjustment holes 340, 340. Yes. Both adjustment pieces 310 and 320 are appropriately brought into surface contact with the inner and outer sides in a superposed state, and both holes 330 and 340 are aligned, and adjustment bolts 350 and 350 are inserted into the corresponding holes 330 and 340 and connected. It is possible. Then, the adjustment pieces 310 and 320 can be adjusted by sliding the second lower adjustment piece 310 in the vertical direction by loosening the tightening of the adjustment bolts 350 and 350, and then tightening the adjustment bolts 350 and 350. The interval can be adjusted easily.

  A guide body 70 that guides the dead leaves of the green onion N protruding to the left and right sides is disposed on the inner side of the heel-shoulder breaker 60. The guide body 70 is extended in the front-rear direction from a position lower than the upper end position Ua of the ridge U where the green onion N is cultivated to a position above the distal end portion of the transport unit 21, and from the front-rear width L1 of the crushed shoulder portion 60 Is also formed to have a wide front / rear width L2.

  Specifically, as shown in FIGS. 8 and 9, a scattering prevention cover 69 is attached to a peripheral wall of a gear case 62 described later. The anti-scattering cover 69 has a side covering cover piece 69a and an upper covering cover piece 69b. The side covering cover piece 69a covers the outer side of the attachment disc 64 interlocked with the gear case 62 and the heel shoulder claw 65 protruding from the attachment disc 64 in the radial direction. Further, the upper covering cover piece 69b covers the mounting disk 64 and the upper claw 65 directly above the claw 65.

  A guide body 70 is attached to the upper covering cover piece 69b via an attachment body 74. The attachment body 74 is formed of a square plate-like attachment piece 74a and a hanging piece 74b that hangs downward from the inner edge of the attachment piece 74a. The mounting piece 74a is brought into surface contact with the upper surface of the upper covering cover piece 69b in a superposed state, and is moved in the left-right direction by sliding adjustment bolts 76, 76 through sliding adjustment long holes 75, 75 extending in the left-right direction. The position is adjustable. A midway portion of the guide body 70 extending in a straight bar shape in the front-rear direction is attached to the lower end edge of the hanging piece 74b. Between the front part of the guide body 70 and the upper part of the hanging piece 74b, a rod-shaped reinforcing piece 77 for reinforcing the front part of the guide body 70 is interposed.

  By configuring in this way, the following operational effects are produced.

  (1) Since the relative position in the vertical direction of the tip side part of the heel shoulder breaker 60 and the transport unit 21 can be adjusted by the second vertical space adjustment body 300, the leeches U where the green onions N are cultivated Harvest of green onion N adapted to the shape and height of the can. That is, since both the shoulders of the heel U can be crushed to a required depth by the heel shoulder breaking portion 60, the entry resistance of the digging portion 20 to the heel U can be reduced steadily. Therefore, the harvesting operation can be performed with the traveling machine body 1 having the minimum load and traction force, and the weight of the traveling machine body 1 can be reduced. Moreover, since the conveyance part 21 can clamp the firm site | part of the leaf part Nb of green onion N at the lowest possible position which does not interfere with the ridge U, conveyance of the green onion N by the conveyance part 21 is stabilized. Thus, damage to the green onion N can be prevented.

  (2) Since the relative position of the digging portion 20 and the front end side portion of the conveying portion 21 can be adjusted in the vertical direction by the first vertical distance adjusting body 200, the vertical relative position is set to the height of the ridge U. Can be adapted. As a result, the tip end side of the transport unit 21 can be set to the optimum clamping position of the green onion N, and the transportability of the green onion N can be ensured favorably.

  (3) Since the base end portion of the heel shoulder portion 60 and the conveying portion 21 is coaxially supported by the working portion drive shaft 150 provided in the traveling machine body 1 with the axis line directed in the left-right direction, The structure of A can be simplified, compact, and inexpensive.

  (4) Withered leaves of green onions N projecting laterally by the guide body 70 can be guided from a position lower than the upper end position of the ridge U where the green onions N are cultivated to a position above the front end of the transport unit 21. For this reason, dead leaves or the like of the green onion N projecting to the left and right sides interfere with the heel-shoulder crushing portion 60 and get caught in the heel-shoulder claw 65 of the heel-shoulder crushing portion 60, for example, and the posture of the green onion N is disturbed. In addition, it is possible to prevent the leek N from being damaged. Therefore, the conveyance part 21 can clamp and convey the green onion N in the optimal position, and can ensure the conveyance property and commercial value of the green onion N well.

  Next, the configuration of the posture change / alignment unit 23 will be described. In other words, the posture change / alignment unit 23 conveys the green onion N toward the outer rear gradually separated from the travel aircraft body 1 on one side (left side in the present embodiment) of the travel aircraft body 1 while changing the posture. Yes. On the leaf Nb side and the rhizome part Na side of the green onion N sandwiched between the posture change / alignment part 23, the leaf part side guide body 87 and the rhizome part side extending along the posture change / alignment part 23, respectively. A guide body 88 is provided and is slidably guided by the guide bodies 87 and 88 while supporting the leaf Nb side and the rhizome portion Na side of the green onion N from below.

  The leaf portion side guide body 87 and the rhizome portion side guide body 88 are formed by extending from the start end portion to the end portion of the posture changing / alignment portion 23, and the end portions of the guide bodies 87, 88 are directed rearward and downward. The collecting portion 25 is arranged below the protruding end portions, and the green onions N conveyed by the posture changing / aligning portion 23 are dropped onto the collecting portion 25 and collected. I am doing so. A base end portion of the extension guide body 89 is attached to the projecting end portion of the leaf portion side guide body 87, and the extension guide body 89 can be retracted and rotated upward about the base end portion.

  The leaf portion side guide body 87 extends along the posture changing / aligning portion 23 and is opposed to the pair of front and rear guide pieces 87a and 87b which are opposed to each other at an interval in the front and rear direction, and the middle portions of both guide pieces 87a and 87b. And a connecting piece 87c for connecting the two. The end portions of the guide pieces 87a and 87b are protruding end portions 87d and 87e that protrude rearward and downward. On the other hand, the extending guide body 89 is formed in a U shape in a plan view. Both base end portions of the extension guide body 89 are attached to the pair of front and rear projecting end portions 87d and 87e, and the extension guide body 89 is retractable and rotatable upward about the base end portions.

  More specifically, as shown in FIGS. 10 to 12, the pair of transfer bodies 80, 80 constituting the posture change / alignment unit 23 is arranged after the pair of left and right transport bodies 42, 42 constituting the transport unit 21. At the position directly below the end, the base end portions (front end portions) are opposed to each other on the left and right, while at the left rear position of the rear end portions of the transport bodies 42, 42, the tip ends (rear end portions) are vertically Are arranged opposite to each other. The transfer body 80 having a lower end is provided with a transfer body frame 84 extending in the longitudinal direction, and a driven pulley 82 is attached to the end of the transfer body frame 84. An upper side stay 400 protrudes upward in the middle of the transfer body frame 84, and the leaf side guide body 87 is supported by the upper side stay 400. Further, a lower side base end stay 500 projects downward from the base end portion of the transfer body frame 84, and a lower side front end stay 510 extends downward from the front end portion of the transfer body frame 84. The rhizome side guide body 88 is supported horizontally on both the stays 500 and 510.

  The upper stay 400 includes a stay main piece 410 projecting from the transfer body frame 84, a fixed plate piece 420 extending from the tip (upper end) of the stay main piece 410, and a movable projecting upward from the fixed plate piece 420. Pivot 430, movable plate 450 pivotally supported by movable pivot 430 via boss 440, and fixing / release pin 460 inserted into and removed from both plate pieces 420, 450 in a penetrating manner. A fixing / releasing body 470 for fixing and releasing the movable plate piece 450 is provided on the piece 420. The fixing / releasing pin 460 is slid in the advancing direction by the urging force of the pressing spring 480 to fix the movable plate piece 450, that is, in a state in which it cannot rotate around the movable pivot 430. On the other hand, the movable plate piece 450 is slid in the backward direction against the urging force of the pressing spring 480, so that the movable plate piece 450 can be released from the fixed state, that is, can be rotated about the movable pivot 430.

  The leaf side guide body 87 is a standing piece that is erected on the right edge of the upper surface of the movable plate piece 450 by fixing the inner end portion of the rear guide piece 87 b along the upper surface rear portion of the movable plate piece 450. The inner end portion of the front guide piece 87a is fixed along 490, and is extended downwardly from the middle portion toward the outer rear side so that the outer ends of both guide pieces 87a and 87b are connected to the collecting portion 25. It is arranged in a front and rear facing state at a position directly above. The leaf Nb side of the green onion N is changed in posture from a standing posture to a forward leaning posture and further to a recumbent posture while sliding on both guide pieces 87a and 87b from the inner side to the outer side.

  Protruding end portions 87d and 87e formed at the end portions (outer end portions) of the guide pieces 87a and 87b are provided with both base end portions 89a and 89b of the extending guide body 89 via pivot pins 89c and 89d, respectively. It is pivotally connected. A tension spring 78 is interposed between the first spring coupling piece 87f suspended from the outer end of the rear guide piece 87b and the second spring coupling piece 89e suspended from the rear proximal end 89b. ing. Reference numeral 79 denotes a stopper pin that protrudes from the protruding end portion 87e. A base end portion 89b that is pivotally biased by the tension spring 78 is brought into contact with the stopper pin 79 from below, and the distal end portion of the extension guide body 89 The side is restricted from rotating beyond a predetermined posture inclined downward and outward.

  The leaf portion Nb of the green onion N is slid down toward the collecting portion 25 along the extended guide body 89. b is an axis of the pivot pins 89c and 89d. The extending guide body 89 is rotatable about an axis b so as to be flipped up in the upward direction, which is a retraction direction c that is separated from the collection unit 25. That is, when the distal end side of the extension guide body 89 is pressed from below, the extension guide body 89 is rotated upward about the axis b against the biasing force of the tension spring 78. . Therefore, when the front end side of the transport unit 21 is raised and the rear end side and the posture change / alignment unit 23 are lowered, the extension guide body 89 extends when the front end side interferes with the collection unit 25. The guide body 89 is rotated upward and retracted. Therefore, neither the extension guide body 89 nor the collection unit 25 is damaged. Further, the extending guide body 89 rotated in the retracting direction c is restrained from retracting and rotating when the base end portion abuts against the stopper pin 79.

  The leaf-side guide body 87 is rotated in the front-rear rotation direction e around the axis d of the movable pivot 430, and is used along the posture changing / aligning portion 23 (sliding guide). Position) and a non-use position (storage position) arranged along the transport unit 21.

  The rhizome portion side guide body 88 is formed in a straight bar shape, and is supported in a horizontal shape between a lower side base end stay 500 protruding from the transfer body frame 84 and a lower side front end stay 510. Yes. The outer end portion 88a of the rhizome portion side guide body 88 is arranged on the same plane as the extending guide body 89 in the downward inclination posture, and has a downward inclination shape. The rhizome portion side guide body 88 is slidably guided by the rhizome portion Na of the green onion N sandwiched between the pair of transfer belts 83 and 83 toward the outer rear side, and also on the outer end portion 88a. The rhizome part Na is slidably guided toward the collecting part 25. At this time, the outer end portion 88a is arranged in a downwardly inclined manner on the same plane as the extending guide body 89 that slides and guides the leaf portion Nb side of the green onion N, and thus cooperates with the extending guide body 89. The green onion N can be smoothly slid and transferred to the collecting unit 25 side without disturbing the posture of the green onion N. Therefore, the green onions N are collected in an orderly manner on the collecting unit 25, and the green onions N can be easily recovered.

  As shown in FIGS. 10 and 11, a flat plate-shaped chain transmission case 600 containing a chain transmission mechanism 86 is disposed at the end portion of the right transport body 42. A transfer guide body 610 for transferring and guiding the midway portion of the green onion N from the transfer unit 21 to the posture change / alignment unit 23 is attached to the terminal end of the left transfer body 42.

  That is, the joint guide body 610 is formed by curving a rod-shaped body, and a base end portion (front end portion) 630 is attached to the terminal end portion of the left transport body 42 via the mounting bracket 620. The intermediate portion 640 of the transfer guide body 610 is formed to be curved along the conveyance path of the green onion N that continues from the terminal end of the conveyance unit 21 to the start end of the posture change / alignment unit 23. The tip end portion 650 of the inheritance guide body 610 is arranged in a superposed state above the starting end portion of the leaf portion side guide body 87. The leaf Nb side of the green onion N inherited from the terminal end of the transport unit 21 to the start end of the posture changing / aligning unit 23 is tilted forward from the standing posture to the leaf side guide body 87 from the joint guide body 610. While being changed to the posture, it is inherited smoothly and steadily.

  By configuring in this way, the following operational effects are produced.

  (1) The posture changing / aligning unit 23 conveys the green onion N toward the outer rear gradually separated from the traveling machine body 1 on one side (left side in the present embodiment) of the traveling machine body 1 while changing and aligning the posture. On the leaf Nb side and the rhizome Na side of the green onion N sandwiched between the posture changing / aligning portion, the leaf portion side guide body 87 and the rhizome portion extending along the posture changing / aligning portion 23, respectively. Since the guide body 88 is disposed and the leaf Nb side and the rhizome Na side of the green onion N are guided from below by the guide bodies 87 and 88, the leaf Nb side of the green onion N and the rhizome Na The side can be prevented from sagging. Then, the green onion N to be conveyed is conveyed toward the outer rear gradually separated from the traveling machine body 1 on one side (left side in the present embodiment) of the traveling machine body 1 while changing the posture from the standing posture to the inclined posture. Therefore, it does not interfere with other objects of the traveling machine body 1. In this manner, since the sag of the green onion N and interference with other objects can be avoided, the harvesting efficiency and the commercial value of the green onion N can be ensured satisfactorily.

  (2) The end portions of the leaf portion side guide body 87 and the rhizome portion side guide body 88 formed by extending from the start end portion to the end portion of the posture changing / alignment portion 23 are protruding end portions that protrude rearward and downward. 87d and 87e, and a collecting unit 25 is arranged below the projecting end portions 87d and 87e, and the green onions N conveyed by the posture changing / aligning unit 23 are dropped onto the collecting unit 25 and collected. Therefore, the harvested green onions N are collected by the collecting unit 25 steadily.

  (3) While the posture change / alignment unit 23 is attached to the traveling machine body 1 so as to be capable of moving up and down, the collection unit 25 is fixed to the traveling machine body 1. The extension guide body 89 located behind the moving fulcrum may be lowered and collide with the collecting unit 25. However, the extension guide body 89 is retracted and rotated upward about its base end. Since the extension guide body 89 is retracted and rotated with respect to the collection unit 25, any damage or the like can be prevented.

  (4) A pair of guide pieces 87a and 87b that the leaf side guide body 87 extends along the posture changing / aligning portion 23 and is opposed to each other with a space in the front-rear direction, and the middle of both guide pieces 87a and 87b Since the connection part 87c which connects parts is comprised, while being able to support the leaf part Nb side of the green onion N from the bottom widely widely, it can guide stably, the leaf part Nb side Can be prevented from sagging. The extension guide body 89 is formed in a U-shape, and both base end portions of the extension guide body 89 are attached to the pair of front and rear projecting end portions 87d and 87e. Since it is possible to retract and rotate upward with the end portion as the center, it is possible to prevent the extension guide body 89 from being damaged by being retracted and rotated with respect to the collection unit 25.

[More specific explanation of the structure of the harvesting section]
The digging part 20, the conveying part 21, and the scraping part 22, which are each working part, are arranged on a virtual collinear line L (see FIG. 3) extending in the front-rear direction in front of the traveling machine body 1. The boarding step unit 24 provided in the traveling machine body 1 is disposed behind the working unit and on the virtual collinear line L. That is, on the virtual collinear line L that is the left and right center line of the traveling machine body 1, the digging part 20, the transport part 21, the scraping part 22, and the boarding step part 24 are arranged in a line in the front-rear direction.

  The digging portion 20 pivotally supports a base end portion of a rectangular frame-shaped support frame 30 formed by extending in the front-rear direction on the body frame frame 11 via a pivot 31 having an axis line in the left-right direction. A digging conveyor 32, which is a so-called bar conveyor, is placed on the support frame 30, and a digging blade 33 is attached to the starting end (front end) of the digging conveyor 32 so as to project forward. Between a cylinder stay 35 provided on the machine body frame 11 and a lifting arm 36 erected upward from a midway part of the pivot 31, a lifting cylinder 37 that extends and retracts in the front-rear direction is horizontally mounted. A continuous piece 39 is interposed between the base end portion of the arm 36 and the left and right extended pieces 30 a of the support frame 30. The digging portion 20 can be moved up and down in conjunction with the expansion and contraction operation of the lifting cylinder 37, and the conveying portion 21 and the scraping portion 22 are configured to be lifted and lowered integrally with the digging portion 20. Reference numeral 38 denotes an elevating operation lever for elevating the digging portion 20 and the like.

  In the digging and raising part 20 configured as described above, when the leek N is harvested, the digging and raising part 20 is appropriately lowered by the elevating cylinder 37, and the digging and conveying conveyor 32 is arranged in an inclined posture of front and rear and high. The tip side half of the digging blade 33 is arranged in close proximity to the field G surface substantially horizontally. In such a state, as the traveling machine body 1 travels forward, the tip side half of the digging blade 33 enters substantially horizontally toward the front with respect to the straw U where the green onions N are cultivated, The green onion N is dug up from directly below the rhizome portion Na of the green onion N, and the proximal half of the dug up blade 33 slides and transfers the green onion N along with the soil mass. Then, the scalloped green onion N is transported rearward and upward while sliding on the upper surface of the proximal half of the digging blade 33, and the leaf part Nb of the green onion N is sandwiched by the transport part 21 described later and rearwardly upward. On the other hand, the rhizome portion Na of the leek N to which the soil mass is adhered is digged up from the proximal half of the digging blade 33 and transferred onto the conveyor 32, and is further conveyed rearward and upward by the digging conveyor 32. At this time, the green onions N are transported rearward and upward in the standing posture cultivated in the straw U.

  The conveying part 21 is arranged in a slanted shape with front and rear heights in parallel with the digging conveyor 32 of the digging part 20 immediately above the digging part 20, and the midway part of the leek N in the standing posture digging up is laterally In this state, the paper is conveyed toward the rear upper side.

  In other words, the transport unit 21 is arranged in parallel with and directly above the raising conveyor 32 via the first vertical interval adjusting body 200, the rear support frame 41, and the transport support frame 46 as a pair of left and right front support frames. It is arranged. And the conveyance part 21 has arrange | positioned and comprised the left-right paired conveyance bodies 42 and 42 extended | stretched in the front-back 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 intervals in the front-rear direction. Conveying belt forward path side portions 45a, 45a that are transported from the start end portion (front end portion) to the end end portion (rear end portion) of both transport bodies 42, 42 facing left and right are in surface contact in a face-to-face state, The transport belt forward path side portions 45a and 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 first vertical distance adjusting body 200 is extended in the vertical direction and is interposed between the left side of the digging conveyor 32 and the front part of the left transport body 42. Similarly, the right first vertical direction interval adjusting body 200 extends in the vertical direction and is interposed between the right side portion of the digging conveyor 32 and the front portion of the right transport body 42. A pair of left and right drive shaft cases 48, 48 that support a pair of left and right pulley drive shafts 85, 85, which will be described later, stand on the left and right sides of a transmission horizontal shaft case 47 that supports a transfer unit transmission horizontal shaft 170 that will be described later. Has been established. The left rear support frame 41 is interposed between the left drive shaft case 48 and the rear portion of the left transport body 42. Similarly, the right rear support frame 41 is interposed between the right drive shaft case 48 and the rear portion of the right transport body 42. The left transport support frame 46 is interposed between the front portion of the left transport body 42 and the left front portion of the machine body frame 11 in an oblique manner. Similarly, the right transport support frame 46 is interposed between the front portion of the right transport body 42 and the right front portion of the machine body frame 11 in an oblique manner. Reference numeral 49 denotes a tension roller that elastically biases the feeding belt forward path side portion 45a.

  In the transport unit 21 configured as described above, the transport belt forward path side portions 45a and 45a of the pair of left and right transport bodies 42 and 42 sandwich the leaf portion Nb of the green onion N and the green onion N rearward and upward in the sandwiched state. Therefore, in cooperation with the digging conveyor 32 of the digging and raising part 20 that supports and conveys the rhizome part Na of the green onion N from the lower side, the green onion N is conveyed steadily rearward and upward in an upright posture. can do.

  The posture change / alignment unit 23 inherits the green onion N that is conveyed in a standing posture by the conveyance unit 21 at a position immediately after the conveyance unit 21 and tilts the inherited green onion N outward from the standing posture. In addition to changing the posture to the tilted posture and arranging the green onion N whose posture has been changed so as to be aligned along the transport direction, the green onion N is rear-upper on one side while changing and aligning the posture. ).

  That is, the posture change / alignment unit 23 is configured by arranging a pair of left and right transfer bodies 80, 80 extending in the front-rear direction so that the front end is lower than the rear height, and the rear end portion is directed outward on the left side. Yes. The transfer body 80 is formed by winding a transfer belt 83 around a driving pulley 81 and a driven pulley 82 that are spaced apart from each other in the front-rear direction, and start ends (front ends) of both transfer bodies 80, 80 facing left and right. The transfer belt forward path side portions 83a and 83a that are transferred from the portion) toward the end portion (rear end portion) are in surface contact with each other in a face-to-face state. The driving pulleys 81 and 81 are arranged such that their axes are directed in the vertical direction, while the driven pulleys 82 and 82 are arranged such that their axes are inclined in the inclination direction (for example, 45 °) of the left high, right, and low. The intermediate portions of the transfer belt forward path side portions 83a and 83a are brought into surface contact in a twisted manner. The drive pulley 44 of the left transport body 42 and the drive pulley 81 of the left transfer body 80 are coaxially attached to the upper end portion and the middle portion of the left pulley drive shaft 85 arranged with the axis line directed in the vertical direction. . The drive pulley 44 of the right transport body 42 is linked to the upper end portion of the right pulley drive shaft 85 arranged with the axis line in the vertical direction via a chain transmission mechanism 86, and also the drive pulley of the right transfer body 80. 81 is attached to the middle part of the right pulley drive shaft 85. Then, the posture change / alignment unit 23 that has inherited the green onion N from the terminal end of the transport unit 21 holds the green onion N in a state where the transfer belt forward path side portions 83a and 83a hold the leaf portion Nb of the green onion N. While changing the posture from the standing posture to the leaning posture (forward leaning posture), it is aligned along the carrying direction, and is conveyed to the rear left upper side.

  The posture changing / aligning unit 23 configured in this way can change the conveying posture of the green onion N from the standing posture to the forward leaning posture, so that the green onion N is sequentially and steadily described later. Can be collected and stored.

  A rectangular plate-shaped collecting unit 25 that collects green onions N is arranged at a lower rear position of the posture changing / aligning unit 23, and the green onions N whose posture has been changed / aligned by the posture changing / aligning unit 23 are collected by the collecting unit 25. To be collected. Then, the front edge of the collecting unit 25 is arranged below the terminal end of the posture changing / aligning unit 23, and the green onions N conveyed by the posture changing / aligning unit 23 are dropped onto the collecting unit 25 and collected.・ It is designed to be stored.

  That is, the collection unit 25 is attached to the body frame 11 through the collection unit support arm 90. The collection unit support arm 90 is formed of a vertically extending arm piece 91 whose axis is directed in the vertical direction, and a longitudinally extending arm piece 92 whose axis is directed in the longitudinal direction from the upper end of the vertically extending arm piece 91. A mounting frame 93 is provided on the front / rear extension arm piece 92 so as to project outward on the left side, and the lower surface of the collecting unit 25 is mounted on the mounting frame 93.

  A cylindrical support portion 98 having an axis line in the vertical direction is provided at the left rear end portion of the machine body frame 11, and the collecting portion support arm 90 has a vertically extending arm piece 91 in the cylindrical support portion 98. It is inserted from above and is pivotally attached around its axis.

  The collecting unit 25 is capable of changing the posture between the horizontal arm use posture and the droop-free posture in the direction around the horizontal axis of the front and rear extension arm piece 92 with the axis line in the front and rear direction, and the axis line is directed in the vertical direction. Positioned between the use position arranged on one side of the machine body (left side in this embodiment) in the direction around the vertical axis of the vertically extending arm piece 91 and the storage position arranged in a drooping non-use posture immediately after the machine body It can be changed. Accordingly, the movable side step piece 95 of the boarding step portion 24 is set to the non-use posture in which the movable side step piece 95 is raised upward, and the collecting portion 25 is placed in the retracted non-use posture at the position immediately after the movable side step piece 95. By arranging, the leek harvesting machine A can be stored in a compact manner. Further, on the right side opposite to the left side where the collecting unit 25 is disposed, there is an operation unit 14 for operating the working units of the traveling machine body 1 and the harvesting unit 2 with the boarding step unit 24 interposed therebetween. It is arranged.

  In the collecting unit 25 configured in this manner, the harvested green onion N is placed on the collecting unit 25 in a lying posture on the left side of the operator Op who is standing and riding on the boarding step unit 24. Since it can be piled up and collected steadily, the collection performance of green onion N and the steering / harvest operation performance of the operator Op can be ensured satisfactorily.

  In front of the digging portion 20, a pair of left and right crushed shoulder portions 60, 60 that are part of the harvesting portion 2 are disposed. The crushed shoulder portions 60, 60 break down both shoulder portions of the ridge U to reduce the entry resistance of the digging and raising portion 20 so that the digging work by the digging and raising portion 20 can be performed smoothly.

  That is, the lower shoulder portions 60, 60 are attached to the left and right side portions of the horizontal shaft case 50 by attaching the base end portions (rear end portions) of the front extending shaft cases 61, 61 extending forward, respectively. Gear cases 62, 62 are attached to the front end portions (front end portions) of the cases 61, 61, and attachment discs 64, 64 are attached to the gear cases 62, 62 via disc support shafts 63, 63. Four crushing claws 65, 65 are provided at 64 at a predetermined interval in the circumferential direction. A front extension shaft 66 is mounted in the front extension shaft case 61, and the disk support shaft 63 is linked to the front extension shaft 66 via gears 67 and 68 in the gear case 62.

  Then, by rotating the heel shoulder claw 65 protruding from the mounting disk 64 in the upper cut direction a, the heel U shoulder can be crushed by the heel shoulder claw 65. 71 is a gauge wheel that determines the height of the front end of the harvesting section 2 to ground, 72 is a gauge wheel support, and 73 is a gauge wheel support machine frame.

[Description of power transmission mechanism]
M shown in FIG. 13 is a power transmission mechanism of the leek harvesting machine A, and the power transmission mechanism M is formed of a traveling machine body transmission mechanism part Ma and a harvesting part transmission mechanism part Mb as shown in FIG. Yes.

  That is, the traveling machine body transmission mechanism Ma is configured as follows. A first chain transmission mechanism 110 is interposed between the drive shaft 12 a of the engine 12 mounted on the machine body frame 11 and the input shaft 101 of the hydraulic pump 100. A second chain transmission mechanism 130 is interposed between the drive shaft 12 a of the engine 12 and the input shaft 121 of the speed change case 120 provided in the machine body frame 11. A first belt transmission mechanism 140 is interposed between the left end portion of the output shaft 122 of the transmission case 120 and the input shaft 13 a of the transmission case 13 provided at the lower part of the machine body frame 11. Drive wheels 10 a and 10 a of the traveling units 10 and 10 are attached to both ends of the output shaft 13 b of the mission case 13.

  Moreover, the harvesting part transmission mechanism part Mb is configured as follows. A second belt transmission mechanism 160 is interposed between the right end portion of the output shaft 122 of the transmission case 120 and the right end portion of the working unit drive shaft 150 pivoted in the horizontal shaft case 50. A worm gear case 151 is linked to the left side of the working unit drive shaft 150, and the gear case 178 is linked to the worm gear case 151 via a transmission shaft 165 extending forward. The digging gear case 178 is linked and connected to the left end portion of the drive shaft 34, and the drive shaft 34 is horizontally mounted on the rear portion of the digging conveyor 32. The rear end of the transmission shaft 165 is interlocked with the left end of the conveyance unit transmission horizontal shaft 170, and the conveyance unit transmission horizontal shaft 170 is directed in the left-right direction via input / output gears 171, 172. Yes. Further, the lower end portion of the left pulley drive shaft 85 is interlocked and connected to the midway end portion of the conveying portion transmission horizontal shaft 170 via input / output gears 173 and 174. Further, the lower end portion of the right pulley drive shaft 85 is interlocked and connected to the right end portion of the conveying portion transmission horizontal shaft 170 via input / output gears 175 and 176. A drive pulley 44 of the left transport body 42 and a drive pulley 81 of the left transfer body 80 are coaxially attached to the upper end portion and the middle portion of the left pulley drive shaft 85. The drive pulley 44 of the right transport body 42 is linked to the upper end of the right pulley drive shaft 85 via a chain transmission mechanism 86, and the right transfer body is placed in the middle of the right pulley drive shaft 85. 80 drive pulleys 81 are attached.

  A rear end portion of the chain case 51 extending in the front-rear direction is linked and connected to the right side portion of the working unit drive shaft 150. A shaft case 52 protrudes leftward from the front end portion (front end portion) of the chain case 51, and the rotating body 54 is coaxial with the front end portion of the rotating body support shaft 53 pivoted in the shaft case 52. It is attached to. The right end portion of the rotating body support shaft 53 is linked and connected to the front end portion of the chain case 51. A scraping portion 22 is attached to the left end portion of the rotating body support shaft 53. Reference numeral 57 denotes a plurality of projecting pieces projecting from the peripheral wall of the rotating body 54. The left and right sides of the working unit drive shaft 150 are connected to the rear end portions of the front extension shafts 66 and 66 pivoted in the front extension shaft cases 61 and 61, respectively, while the front end portions of the front extension shafts 66 and 66 are connected. In addition, the base end portions (left end portions) of the disk support shafts 63 and 63 are interlocked and connected via the gear cases 62 and 62. A disk support shaft 63 is linked to the forward extension shaft 66 via gears 67 and 68 in the gear case 62.

  In the power transmission mechanism M configured as described above, power can be transmitted from the engine 12 to each working unit, and the green onion N can be harvested efficiently.

A Green onion harvester N Green onion Na Rhizome Nb Leaf part Op Worker 1 Traveling machine body 2 Harvesting part 20 Digging part 21 Conveying part 22 Scraping part 23 Posture changing / aligning part 24 Boarding step part 70 Guide body 87 Leaf part side guide Body 88 Rhizome side guide body 200 First vertical distance adjusting body 300 Second vertical distance adjusting body

Claims (4)

It is a leek harvesting machine equipped with a harvesting part that digs up and harvests green onions from the straw that cultivates green onions on a self-propelled traveling machine body,
The harvesting unit, as each working unit, sandwiches the digging up part that digs up the green onion, the intermediate part of the green onion digging up by the digging up part, and the conveyance part that conveys the squeezed green onion to the rear upper side in the standing posture, Attach the green onion transported in the standing posture from the terminal end of the head part, hold the middle part of the inherited green onion, change the posture and align it to the tilted posture tilted outward from the standing posture An alignment section;
The posture change / alignment unit conveys the onions toward the outer rear gradually separated from the traveling machine body on one side of the traveling machine body while changing the posture / alignment.
A leaf side guide body and a rhizome side guide body extending along the posture change / alignment part are arranged on the leaf part side and the rhizome part side of the green onion in which the midway part is sandwiched by the posture change / alignment part, respectively. A leek harvesting machine characterized in that the leaf side and rhizome side of the leek are guided from below by each guide body. The leaf part side guide body and the rhizome part side guide body are formed by extending from the start end part to the end part of the posture change / alignment part,
The end part of each guide body is a projecting end part projecting rearward and downward, a collecting part is arranged below both projecting end parts, and the green onions conveyed by the attitude changing / aligning part are collected part 2. A leek harvesting machine according to claim 1, wherein said leek harvesting machine is dropped and collected.   At the protruding end of the leaf side guide body, a base end portion of an extended guide body for guiding green onions onto the collecting portion is attached, and the extended guide body pivots upward with the base end portion as a center. The leek harvesting machine according to claim 2, wherein the leek harvesting machine is free. The leaf portion side guide body includes a pair of guide pieces that extend along the posture changing / alignment portion and face each other with a gap in the front-rear direction, and a connecting piece that connects the middle portions of both guide pieces. And
The end portion of each guide piece forms a protruding end portion that protrudes rearward and downward,
The extension guide body is formed in a U shape, and both base end portions of the extension guide body are attached to a pair of front and rear projecting end portions, and the extension guide body is upwardly centered on both base end portions. The leek harvesting machine according to claim 2, wherein the leek harvesting machine is freely retractable.

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