JP2022146797A - vegetable harvester - Google Patents

Abstract

To provide a vegetable harvester that has a reduced size of the machine while achieving good soil removal performance.SOLUTION: Provided is a vegetable harvester that pulls out and harvests onions from the soil, comprising: a pulling-out/conveyance device 24 for pulling out onions from the soil and conveys the pulled-out onions rearward and upward while pinching the leaves and stems thereof; a leaves/stems cutting device 26 for separating and dropping vegetable bodies from the leaf/stem portions of the onions conveyed by the pulling-out/conveyance device 24; a soil removal device 27 for receiving the vegetable bodies separated by the leaves/stems cutting device 26 and transferring the vegetable bodies rearward while removing soil and mud attached to the vegetable bodies; and a conveyor 7 for receiving the vegetable bodies from the soil removal device 27 and conveying the vegetable bodies rearward and upward.SELECTED DRAWING: Figure 11

Description

The present invention relates to a vegetable harvesting machine for harvesting bulbous vegetables such as garlic, onions and lily bulbs, and root vegetables such as carrots.

Conventionally, as a vegetable harvester for harvesting vegetables such as bulbous vegetables (bulb crops) such as garlic, onions, and lily root, vegetables cultivated in a field are pulled out from the soil or dug up and then transported. Harvesting configurations are known. Some vegetable harvesters of this type are equipped with a structure for removing soil adhering to vegetables.

Patent Document 1 and Patent Document 2 disclose a structure for removing soil, which is provided with a conveyor in which a plurality of conveying rollers for removing soil are continuously provided in the conveying direction of vegetables, with the left-right direction of the machine body as the rotation axis direction. disclosed. A conveying roller constituting a conveyor has a plurality of projections made of an elastic material such as rubber projecting radially when viewed in the direction of the rotation axis, and causes the projections to act on the vegetables while rotating. The conveyor is arranged in an upwardly inclined shape toward the rear, and is provided so as to convey the vegetables rearward and upward.

JP 2008-48642 A JP 2018-134065 A

According to the structure of soil removal disclosed in Patent Document 1 and Patent Document 2, since the conveyer rollers having a plurality of radially projecting projections are arranged in series to constitute the conveyor, the conveyer is tilted rearward and upward. angle is limited. That is, in a conveyor composed of a plurality of conveying rollers having a soil removal function, it is necessary to maintain a gentle inclination angle toward the rear and upward from the viewpoint of obtaining a good conveying action for conveying vegetables to the rear. .

For this reason, for example, the higher the position of the conveying destination of the vegetables, the longer the overall length of the conveyor tends to be, and there is a problem that it is difficult to make the machine compact.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vegetable harvester capable of obtaining good soil removal performance and having a compact body. .

A vegetable harvesting machine according to the present invention is a vegetable harvesting machine that harvests vegetables by pulling them out of the soil, and is a pulling-out conveying device that pulls out the vegetables from the soil and conveys them rearward and upward while holding the stems and leaves of the pulled-out vegetables. a stem and leaf cutting device for separating and dropping the vegetable main body from the stem and leaf of the vegetable conveyed by the drawing and conveying device; It comprises a soil removing device for sending the vegetable body rearward while removing soil and mud, and a conveying device for receiving the vegetable body from the soil removing device and conveying the vegetable body rearward and upward.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine, wherein the soil removing device includes a soil removing portion for removing the soil and mud by rotating the vegetable body, and a vegetable body. and a transfer section for transferring from the soil removing section to the conveying device.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine, wherein the soil removal device has a roller having a plurality of projections projecting radially when viewed in the direction of the rotation axis. A plurality of the rollers are arranged side by side, and the rollers forming the transfer section are provided at a position higher than the rollers forming the soil removal section.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine, further comprising a guide member provided between the roller forming the transfer section and the conveying device.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine provided with a pair of left and right crawler traveling devices, and the left and right crawler traveling devices are provided within a width range of the drawing conveying device in the left-right direction. The soil dropping device and the conveying device are provided between the left and right crawler traveling devices in the left-right direction.

A vegetable harvesting machine according to another aspect of the present invention is characterized in that, in the vegetable harvesting machine, the main body portion of the vegetable that is cut off and dropped by the foliage cutting device at a position outside the range of the width of the soil removal device in the left-right direction is It is provided with a drop guide device that guides to the soil removal device.

In the vegetable harvesting machine according to another aspect of the present invention, the vegetable harvesting machine is provided above the soil removal device, and the vegetables sent from the soil removal device to the conveying device are fed to the conveying device. and an auxiliary transport device for providing.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine described above, wherein the auxiliary conveying device includes a roller having a plurality of projections projecting radially when viewed in the rotation axis direction, and the roller includes the plurality of projections. It is provided so as to rotate in the direction in which the vegetables are conveyed rearward by the protrusions.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine, wherein the roller is provided so as to be movable in a direction of approaching or separating from the soil removal device.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine, wherein the auxiliary conveying device is configured to be driven by power extracted from the conveying device, and extracts power from the conveying device. It is provided so as to be vertically rotatable about the power take-off shaft as the center of rotation.

A vegetable harvesting machine according to another aspect of the present invention is the vegetable harvesting machine, wherein the rollers are provided so that the locus of rotation of the rollers passes through a movement path of the vegetables from the soil removal device to the conveying device. There is.

ADVANTAGE OF THE INVENTION According to this invention, while being able to obtain favorable soil removal performance, a body can be made compact.

1 is a left front perspective view of a vegetable harvester according to an embodiment of the present invention; FIG. 1 is a right front perspective view of a vegetable harvester according to an embodiment of the present invention; FIG. 1 is a left side view of a vegetable harvester according to one embodiment of the present invention; FIG. 1 is a plan view of a vegetable harvester according to one embodiment of the present invention; FIG. 1 is a left side sectional view of a vegetable harvester according to one embodiment of the present invention; FIG. FIG. 3 is a left side view showing the configuration of the conveying/cutting unit according to one embodiment of the present invention; FIG. 4 is a rear perspective view showing the configuration of the conveying/cutting unit according to one embodiment of the present invention; FIG. 2 is a front view showing the configuration of the transport start end of the pull-out transport device according to one embodiment of the present invention; 1 is a front sectional view of a vegetable harvester according to one embodiment of the present invention; FIG. It is an upper perspective view which shows the structure of the soil removal apparatus and conveyor which concern on one Embodiment of this invention. Fig. 2 is a left side cross-sectional view showing the structure of a soil dropping device and a conveyor according to one embodiment of the present invention; It is a top view which shows the structure of the soil removal apparatus and conveyor which concern on one Embodiment of this invention. Fig. 2 is a front left perspective view showing the configuration of a soil removal device and a conveyor according to one embodiment of the present invention; FIG. 4 is an explanatory diagram of a support structure for auxiliary transport wheels according to one embodiment of the present invention; 14A is a left side view and FIG. 14B is a right side view. It is a figure which shows the power transmission structure in the vegetable harvester which concerns on one Embodiment of this invention. FIG. 16 is a partially enlarged view of FIG. 15; 1 is an upper perspective view showing a foliage discharge configuration provided in a vegetable harvester according to an embodiment of the present invention; FIG. 1 is a perspective view showing configurations of a release guide device, a lateral leaf ejection chute, and a guide plate according to an embodiment of the present invention; FIG.

In a vegetable harvesting machine for harvesting vegetables such as bulbous vegetables, the present invention aims to improve soil removal performance and make the machine body compact by devising a configuration for removing soil adhering to vegetables and conveying them. This is what we are trying to do. Embodiments of the present invention will be described below.

In the embodiments of the present invention described below, an onion harvester that uses onions, which are a type of bulbous vegetables, as a vegetable harvester according to the present invention will be described as an example. However, the vegetable harvesting machine according to the present invention is widely applicable as a vegetable harvesting machine for harvesting other bulbous vegetables such as garlic and lily bulbs, and root vegetables such as carrots.

As shown in FIGS. 1 to 5, a vegetable harvesting machine 1 according to the present embodiment is an onion harvesting machine that harvests onions 2 planted in a field by extracting them from the soil. In a field, onions 2 are continuously planted along a straight line. In the description of this embodiment, the field in which the onion 2 is cultivated is a so-called continuous row field without ridges. Further, in the following description, the left side (lower side in FIG. 4) and the right side (upper side in FIG. 4) toward the front of the vegetable harvester 1 are referred to as the left side and the right side of the vegetable harvester 1, respectively.

The vegetable harvester 1 first pulls out the onions 2 planted in the soil while holding the stems and leaves 2b extending from the bulbs 2a in the soil to the ground, and the onions 2 with the stems and leaves held therebetween are pulled out. The stems and leaves 2b are cut and separated from the bulbs 2a during the transportation, and the bulbs 2a are harvested. The stem and leaf portion 2b separated from the bulb portion 2a is discharged to a predetermined portion of the vegetable harvester 1. As shown in FIG. The vegetable harvesting machine 1 performs such harvesting work while traveling along the rowing line of the onions 2 .

The vegetable harvesting machine 1 according to this embodiment has a six-row configuration in which six rows of onions 2 are simultaneously pulled out and conveyed for harvesting. The vegetable harvesting machine 1 uses the bulb portion 2a of the onion 2 as a harvesting target portion, and the bulb portion 2a corresponds to the vegetable body portion.

The vegetable harvester 1 includes a traveling body 3 having a crawler traveling device 4 as a pair of left and right traveling devices, and various operations such as traveling and harvesting of the vegetable harvesting machine 1 by a driver (operator) of the vegetable harvesting machine 1. a harvesting unit 6 for harvesting the onions 2; a conveyor 7 as a conveying device for conveying the onions 2 harvested by the harvesting unit 6; and an accommodation portion 8 for accommodation in a container.

The traveling machine body 3 includes a machine body frame 9 that has a three-dimensional framework configuration with a plurality of frame members, and the crawler traveling devices 4 are arranged on both left and right sides of the machine body frame 9 . An operation section 5 , a harvesting section 6 , a conveyor 7 and a storage section 8 are provided on the body frame 9 .

The crawler traveling device 4 is a crawler-type traveling device, and constitutes a crawler portion for moving the body of the traveling body 3 . The crawler traveling device 4 includes a driving wheel 4a supported at a rear lower portion of the body frame 9, a driven wheel 4b supported at a lower front and rear portion of the body frame 9 at a height position below the driving wheel 4a, and front and rear driven wheels 4b. It has a plurality of rolling wheels 4c provided between the driving wheels 4b and crawler belts 4d wound around these wheels. The crawler traveling device 4 has a substantially triangular shape in a side view, with a portion near the driving wheel 4a positioned at the rear upper part as the top, and the crawler belt 4d between the driving wheel 4a and the driven wheel 4b on the front side, It is arranged in a slanting shape with a downward slope. The left and right crawler traveling devices 4 are driven by an engine 10 provided in the vegetable harvester 1 .

The engine 10 is mounted on the rear left side of the traveling body 3 . A transmission 11 is provided at a front lower position of the engine 10 and between rear upper parts of the left and right crawler traveling devices 4 . The transmission 11 appropriately changes the speed of power from the engine 10 and transmits the power to the left and right crawler traveling devices 4 .

The operation unit 5 is provided on the left side of the rear portion of the traveling body 3 . The operation part 5 is a part for operating the vegetable harvester 1, and has an operation box 12 in which various operation tools such as levers and switches are arranged. The operation unit 5 is operated by an operator standing behind the operation box 12 . The operation box 12 is provided at a position above the rear end of the left crawler traveling device 4 and at a height around the chest of the operator.

The operation box 12 includes a travel/work clutch lever 13 that serves as both a travel clutch and a work clutch, a shift lever 14 for traveling the machine, an elevation lever 15 for raising and lowering the working section, left and right side clutch levers 16, and the engine 10. An engine stop switch 17 for stopping is provided. A frame-shaped handle 18 is provided on the rear side of the operation box 12 and has a substantially “U” shape in plan view. The steering wheel 18 is provided with an accelerator lever 19 .

The harvesting section 6 includes a dividing device 21 , a raking device 22 , an excavating device 23 , a pull-out conveying device 24 , a shoulder aligning device 25 , a foliage cutting device 26 and a soil removal device 27 . These devices are supported by a working section frame 30 provided on the vegetable harvester 1 .

The working unit frame 30 includes side frame portions 31, 31 forming left and right outer portions, a front horizontal frame portion 32 connecting upper portions of the left and right side frame portions 31, 31, and left and right side frame portions. It has a rear horizontal frame portion 33 that connects the rear portions of 31 and 31 to each other.

The side frame portion 31 includes a portion configured to form a framework so as to form a substantially triangular shape when viewed from the side (see FIG. 3). The side frame portion 31 includes a front frame portion 31a inclined forward and an upper frame portion inclined rearwardly downward from the upper end portion of the front frame portion 31a. 31b, and a lower frame portion 31c bent at an obtuse angle and arranged in an obtuse angle so as to connect the lower end portion of the front frame portion 31a and the rear end portion of the upper frame portion 31b.

The working unit frame 30 is supported so as to be vertically rotatable with respect to the conveyor 7 with the left-right direction as the rotation axis direction. Specifically, the working unit frame 30 has a pair of left and right forward tilting support frame portions 34 that extend rearward and downward from the left and right intermediate portions of the front lateral frame portion 32 . The lower end portion of the forward tilting support frame portion 34 is attached to the conveyor 7 around the rotating shaft 34a located at the starting end portion of the conveyor 7 via a support member provided at the starting end portion (front end portion) of the conveyor 7. It is rotatably connected with respect to.

The work unit frame 30 is supported by a frame portion that constitutes the conveyor 7, and the conveyor 7 is vertically rotated with respect to the body frame 9 with the left-right direction as the rotation axis direction by a lifting cylinder 35, which is a hydraulic cylinder. (See FIG. 5). The elevating cylinder 35 is installed between the conveyor 7 and the fuselage frame 9 in a front-to-back manner. Various devices of the harvesting section 6 are integrally rotated up and down.

The lift cylinder 35 has the bottom side as the rear side, and the rear end portion of the cylinder tube is rotatably connected to a bracket 36 provided on the body frame 9 with the left-right direction as the rotation axis direction. In addition, the lifting cylinder 35 has the rod side as the front side, and the tip of the piston rod is attached to the horizontal frame portion 37 arranged on the back side of the conveyor 7 via the bracket 38 etc. with the horizontal direction as the rotation axis direction. They are rotatably connected.

The integral device portion which is vertically rotated by the extension and contraction of the lifting cylinder 35 rotates around the rotation support portion 39 of the conveyor 7 with respect to the body frame 9 as a crop processing unit. The rotation support portion 39 is provided between the left and right vertical frame portions 40 erected at the rear portion of the body frame 9, and supports the end portion (rear side end portion) of the conveyor 7 in a rotatable manner. . By rotating the crop processing unit about the rotating support portion 39, the pulling position of the onion 2 with respect to the ground by the vegetable harvester 1 and the like are adjusted.

The working unit frame 30 is connected to the body frame 9 by links 45 provided on both left and right sides. The link 45 has two link arms that are rotatably connected to each other at the other ends to form a substantially "V" shape when viewed from the side. One end side of one link arm is rotatably connected to the rear end portion of the side frame portion 31 via a support member. One end of the other link arm is rotatably connected to the body frame 9 via a support member. The rotation of the two link arms forming the link 45 allows the working section frame 30 to move relative to the body frame 9 as the crop processing unit rotates. A pair of left and right rod-like connecting members 46 are provided between the working section frame 30 and the conveyor 7 .

Each device of the harvesting section 6, the conveyor 7, the storage section 8, and the like provided in the vegetable harvester 1 will be described below with reference to FIGS. 1 to 18. FIG.

[Dividing device]
The dividing device 21 is a device for lifting up the foliage portion 2b of the onion 2 planted in the field to divide the onion 2 into rows. The weed dividing device 21 divides the weeds by lifting up the foliage portion 2b of the onion 2 lying down in the field while passing between the rows. In order to divide the onion 2 into rows, seven weeding devices 21 are provided so as to sandwich each row corresponding to the six rows continuous in the left-right direction. That is, in the configuration for N rows, N+1 weed dividing devices 21 are provided.

The weed dividing device 21 has a longitudinal weed dividing case 51 and a plurality of tines 52 projecting from the weed dividing case 51 . The weed case 51 has an elongated thick plate-like outer shape with the lateral direction as the plate thickness direction. The weed dividing case 51 is provided in a slanted shape with its longitudinal direction slanted in a rearward rising direction in a side view. The inclination angle of the weed case 51 with respect to the horizontal direction is, for example, about 60°.

The tines 52 protrude from the peripheral edge of the dividing grass case 51 . A plurality of tines 52 are fixed at predetermined intervals to a chain 54 wound around front and rear sprockets 53a and 53b, which are provided at both ends in the longitudinal direction of the grass dividing case 51 with the left-right direction as the rotational axis direction. (See FIG. 15).

The seven weed dividing devices 21 are arranged in parallel with a predetermined interval in the left-right direction. The seven weeding devices 21 have rear sprockets 53b fixed to a common pretreatment drive shaft 55 extending in the left-right direction. The tines 52 of are vertically rotated. The pretreatment drive shaft 55 is housed in a pretreatment shaft case 56 that connects the rear end portions of the seven weed dividing devices 21 to each other, and is rotated by power transmission from the engine 10 . The weeding device 21 divides the weeds by lifting the foliage portion 2b of the onion 2 with a plurality of rotating tines 52 .

Of the seven weed dividing devices 21, the five weed dividing devices 21 located in the middle portion other than the weed dividing devices 21 on both the left and right ends are fixed to the front side of the front horizontal frame portion 32 and support plates 58 and 58 are provided. It is supported by the front horizontal frame portion 32 via a support arm 59 extending forward and downward from 58 . The support arm 59 has an upper end fixed to the rear side of the support plate 58 and a lower end fixed to the upper rear side of the weed dividing case 51 of the weed dividing device 21 .

Among the seven weed dividing devices 21, the weed dividing devices 21 on both the left and right ends are attached to the side portions of the side frame portions 31 via the outer support frame portion 60 extending forward and downward from the front portion. It is supported by the frame portion 31 . The outer support frame portion 60 is composed of a plurality of frame members, the rear side of which is connected to the lower front portion of the side frame portion 31, and the front side of which is connected to the left and right outer side portions of the weed dividing case 51 of the weed dividing device 21. I have it fixed.

Rod-shaped support rods 61 having a predetermined bent shape extend left and right outward and forward and downward from the left and right end support plates 58 . The tips of the support rods 61 are fixed to the ends of the pretreatment shaft cases 56 projecting left and right outside from the weed dividing devices 21 on both left and right ends.

[Scraping device]
The raking device 22 is provided behind the weed dividing device 21 . The raking device 22 is a device for raking the foliage 2b of the onion 2 from the front side of the machine body and transferring it to the pulling-out conveying device 24 to assist the pulling-out by the pulling-out conveying device 24. As shown in FIG. The raking devices 22 are provided between the weed dividing devices 21 adjacent to each other in the left-right direction. Therefore, in a configuration with seven weed dividing devices 21, six raking devices 22 are provided. The raking devices 22 are configured to work in pairs. That is, the vegetable harvester 1 has three sets of raking devices 22 arranged side by side, one on the left side, one on the middle, and one on the right side, with a pair of raking devices 22 serving as one set.

For the six onions 2, the pair of raking devices 22 on the left rake together the stems and leaves 2b of the two onions 2 on the left and deliver them to the drawing and conveying device 24 on the left. Similarly, the pair of intermediate raking devices 22 rake together the stems and leaves 2b of the intermediate two strands of onions 2 and transfer them to the intermediate drawing and conveying device 24 . A pair of rake-in devices 22 on the right rake together the stems and leaves 2b of the two onions 2 on the right, and deliver them to the pull-out conveyer 24 on the right.

The rake device 22 has an elongated rake frame 65 and a plurality of tines 66 projecting from the rake frame 65 . The scraping frame 65 has an elongated thick plate-like outer shape, and is provided in a slant shape with its longitudinal direction inclined in a rearward rising direction in a side view, and is parallel to the scraping device 22 .

The tines 66 protrude from the peripheral edge of the rake frame 65 . A plurality of tines 66 are belts wound around front and rear pulleys 67a and 67b provided at both ends in the longitudinal direction of the scraping frame 65 with the direction perpendicular to the plate surface of the scraping frame 65 as the rotation axis direction. It is fixed at a predetermined interval with respect to 68 (see FIG. 15).

The pair of scraping devices 22 of each set are provided so as to form a substantially inverted "V" shape, with the spacing therebetween gradually narrowing from the bottom to the top when viewed from the front. The scraping device 22 is driven by receiving transmission of rotational power from the pretreatment driving shaft 55 via the scraping drive shaft 69 (see FIG. 15). The scraping drive shaft 69 extends rearward and downward from the pretreatment drive shaft 55 . The rotational power of the pretreatment drive shaft 55 is transmitted to the rake drive shaft 69 via bevel gears 70a and 70b.

The scraping device 22 has a rear pulley 67 b fixed to the scraping drive shaft 69 , and receives the rotational power of the scraping drive shaft 69 to laterally rotate the plurality of tines 66 together with the belt 68 . The scraping drive shaft 69 is housed in a scraping drive shaft case 71 extending rearward and downward from the pretreatment shaft case 56 and connecting the pretreatment shaft case 56 and the scraping frame 65 to each other.

A support plate 72 is interposed between the lower end of the raking frame 65 and the lower end of the corresponding grass dividing case 51 positioned substantially in front of the raking frame 65 . The lower end of the rake frame 65 is connected to and supported by the support plate 72 with respect to the lower end of the splitting case 51 .

A rod-shaped mulching presser 360 for holding the mulching film extends rearward from the rear side of the scraping frame 65 . A mulch film is a film that is coated in a field for the purpose of moisturizing and retaining soil, suppressing weeds, and the like.

[Excavation equipment]
The digging device 23 is provided below the raking device 22 . The excavating device 23 is a so-called subsoiler, and is a device for breaking up the soil by entering under the onion 2 so that the onion 2 can be easily pulled out by the pulling-out conveying device 24 .

The excavating device 23 supports a substantially "U"-shaped excavating blade 75 when viewed from the front, blade supports 76 supporting both left and right sides of the digging blade 75, and left and right blade supports 76, respectively. and a vertical frame portion 77 .

The excavating blade 75 has a horizontal blade portion extending in the left-right direction and vertical blade portions rising from both ends of the horizontal blade portion as portions forming a substantially “U” shape when viewed from the front. is connected to and supported by the blade support 76 . The digging blades 75 are provided in an elongated shape so that both ends thereof are located at approximately the same positions as the weed dividing devices 21 on the left and right ends.

The blade support 76 is supported at a predetermined portion of the outer support frame portion 60 . The lower end of the vertical frame portion 77 is connected to the upper end of the blade support 76 . The vertical frame portions 77 extend downward from the left and right ends of the front horizontal frame portion 32 positioned above the blade support 76 . The vertical frame portion 77 is connected to an end portion of an excavation drive shaft 78 that is installed inside the front horizontal frame portion 32, and receives the transmission of rotational power from the excavation drive shaft 78 and rotates with the left-right direction as the rotation axis direction. It is designed to The excavating drive shaft 78 rotates by receiving power transmission from the engine 10 .

With such a configuration, the blade support 76 and the excavating blade 75 integrally swing back and forth with the left-right direction as the rotation axis direction as the vertical frame portion 77 rotates. The digging device 23 softens the soil by inserting a digging blade 75 swinging back and forth into the soil and positioned below the bulb portion 2a of the onion 2 as the vegetable harvester 1 advances. Then, excavate for 6 articles. The horizontal dimension of the excavating blade 75 of the excavating device 23 is the excavating width of the excavating device 23 .

A multi-cutter 361 extends forward and downward from a predetermined portion of the working section frame 30 to cut the mulch film as the machine advances during the harvesting operation of the onions 2 . The multi-cutter 361 is a gutter-shaped member, and extends from the working section frame 30 on the left side of the machine body, and the tip thereof is located near the excavating blade 75 .

[Pull-out Conveyor]
The pulling and conveying device 24 is a device that pulls the onion 2 out of the soil and conveys it rearward and upward while holding the foliage portion 2b of the pulled onion 2 therebetween. The pull-out conveying device 24 is provided on the rear side of the raking device 22, holds the foliage portion 2b delivered from the raking device 22, and conveys the foliage portion 2b rearwardly upward (rear obliquely upward). The onion 2 is pulled out, and the onion 2 is conveyed rearward and upward in a standing posture.

The drawing and conveying device 24 is provided in a slanted shape rearwardly upward from a position immediately behind the lower portion of the scraping device 22 . The angle of inclination of the drawing and conveying device 24 with respect to the horizontal direction is, for example, about 45°. The drawing and conveying device 24 is provided corresponding to one set of the raking device 22 . Therefore, the vegetable harvester 1 is provided with three drawing and conveying devices 24 arranged side by side on the left side, the middle side, and the right side.

As shown in FIGS. 6 and 7, the pull-out transport device 24 comprises an upstream clamping transport device 81 that constitutes the upper transport side portion of the pull-out transport device 24, and a lower transport side portion of the pull-out transport device 24. It has a downstream clamping and conveying device 82, and these conveying devices constitute a front and rear two-stage conveying section. The upstream nipping/conveying device 81 and the downstream nipping/conveying device 82 each extend along the inclination direction of the drawing/conveying device 24 as a whole, and the extending directions in a side view are parallel or substantially parallel to each other.

The upstream clamping and conveying device 81 pulls out the onion 2 from the soil, and transports it rearward and upward while clamping the foliage portion 2b of the pulled out onion 2 . The upstream nipping and conveying device 81 has a pair of endless rotating belts 83, which are respectively connected to a driving pulley 84 as a driving wheel provided on the rear side, which is the downstream side of transportation, and on the front side, which is the upper side of transportation. It has a configuration in which it is wound around a driven pulley 85 that is a provided driven wheel. That is, the upstream nipping and conveying device 81 includes a pair of left and right upstream belt nipping bodies 81A each having a transport belt 83 wound around a drive pulley 84 and a driven pulley 85. is configured to be conveyed while being sandwiched.

The pair of conveying belts 83 sandwiches the foliage portion 2b by the portions facing each other, and rotates in a direction to move the sides facing each other in the conveying direction by the rotational driving force of the drive pulley 84 . The drive pulley 84 and the driven pulley 85 have a rotation axis direction perpendicular to the inclination of the upstream clamping and conveying device 81 in a side view of the machine body. A tension pulley, a guide roller, and the like are provided for the conveying belt 83 .

The upstream nipping/conveying device 81 nips the foliage portion 2b at its front end with the facing surfaces of a pair of conveying belts 83, and pulls the onion 2 out of the soil by rotating the conveying belts 83. As shown in FIG. The pulled onion 2 is conveyed rearward and upward in a substantially vertically suspended posture while the stem and leaf portion 2b is held between the pair of conveying belts 83. As shown in FIG.

The downstream pinching and conveying device 82 is a belt conveying device having a pair of conveying belts 86 like the upstream pinching and conveying device 81 . The downstream nipping/conveying device 82 takes over the foliage portion 2b of the onion 2 conveyed by the upstream nipping/conveying device 81 and conveys the foliage portion 2b of the onion 2 while holding it.

The downstream pinching and conveying device 82 has a conveying starting end located below the conveying terminal portion of the upstream pinching and conveying device 81 . That is, the front end portion of the downstream side nipping and conveying device 82 is positioned below the rear end portion of the upstream side nipping and conveying device 81, and the downstream side nipping and conveying device 81 as an upper stage conveying portion is located at the lower side of the upstream side nipping and conveying device 81. Both conveying devices are provided in a stepped manner so that the device 82 forms a lower conveying section. The downstream nipping and conveying device 82 is extended so that the conveying end portion (rear end portion) is positioned substantially in the front-rear direction central portion of the vegetable harvester 1 .

The downstream nipping and conveying device 82 consists of a pair of endless rotating belts 86, a driving pulley 87 as a driving wheel provided on the lower side of the conveying side, and a driven wheel provided on the upper side of the conveying side. It has a structure wound around a driven pulley 88 . That is, the downstream nipping and conveying device 82 includes a pair of left and right downstream belt nipping bodies 82A each having a driving pulley 87 and a driven pulley 88 with a conveyor belt 86 wound thereon. is configured to be conveyed while being sandwiched. The front end of the downstream belt clamping body 82A is positioned below the rear end of each of the left and right upstream belt clamping bodies 81A.

The pair of conveying belts 86 sandwiches the foliage portion 2b by the portions facing each other, and rotates in a direction to move the sides facing each other in the conveying direction by the rotational driving force of the drive pulley 87 . The drive pulley 87 and the driven pulley 88 have a rotation axis direction perpendicular to the inclination of the downstream clamping and conveying device 82 in a side view of the machine body. A tension pulley, a guide roller, and the like are provided for the conveying belt 86 .

At its front end, the downstream nipping and conveying device 82 nips the stem and leaf portion 2b of the onion 2 conveyed by the upstream nipping and conveying device 81 with the facing surfaces of the pair of conveying belts 86. Take over the onion 2 from the end of the transport. The onion 2 transferred to the downstream nipping and conveying device 82 is conveyed rearward and upward in a substantially vertically suspended posture while the stem and leaf portion 2b is nipped by the pair of conveying belts 86.例文帳に追加

A driving pulley 87 of the downstream side clamping and conveying device 82 is fixed to a conveying input shaft 89 that rotates by receiving power transmitted from the engine 10 , and rotates integrally with the conveying input shaft 89 . The transport input shaft 89 extends rearward and obliquely downward on the rear side of the drive pulley 87 and is housed in a cylindrical transport input shaft case 90 along the axial direction of the transport input shaft 89 . When the driving pulley 87 is rotationally driven, the driven pulley 88 is rotated with the rotation of the conveying belt 86 . The rotational power of the downstream pinching and conveying device 82 is transmitted to the upstream pinching and conveying device 81 to drive the upstream pinching and conveying device 81 to rotate.

The driven pulley 88 of the downstream pinching and conveying device 82 and the driving pulley 84 of the upstream pinching and conveying device 81 are supported by the same support shaft 91 (see FIG. 16). The driven pulley 88 of the downstream belt clamping body 82A and the driving pulley 84 of the upstream belt clamping body 81A are both fixed to the support shaft 91 and rotate together with the support shaft 91. As shown in FIG. In other words, the driven pulley 88 and the driving pulley 84 are provided so as to coaxially rotate with the support shaft 91 that is parallel to the conveying input shaft 89 in the axial direction. As a result, the rotation of the driven pulley 88 is transmitted to the drive pulley 84 via the support shaft 91, and the upstream nipping/conveying device 81 is rotationally driven.

In this manner, the upstream nipping and conveying device 81 connects each upstream belt nipping member 81A to each downstream belt nipping member 82A of the downstream nipping and conveying device 82 via the support shaft 91. It is configured to be rotationally driven by receiving transmission of rotational power of the conveying device 82 . That is, the pull-out conveying device 24 vertically overlaps the rear end portions of the left and right upstream belt clamping bodies 81A and the respective front end portions of the left and right downstream belt clamping bodies 82A. Through a common support shaft 91 that supports the driving pulley 84 and the driven pulley 88, the rotational power of the downstream belt clamping body 82A is transmitted to the upstream belt clamping body 81A.

In this manner, the pull-out conveying device 24 has a stepped belt clamping body 24A in which the rear end of the upstream belt clamping body 81A and the front end of the downstream belt clamping body 82A are connected via the support shaft 91. , a pair of left and right.

In the vegetable harvester 1, regarding the arrangement of the three sets of pull-out transport devices 24 provided on the left side, the center, and the right side, as shown in FIG. It is provided so as to extend along the front-rear direction and along the front-rear direction. On the other hand, the left and right drawing and conveying devices 24 are inclined so that the linear conveying direction is directed from the left and right outer side to the left and right inner side in a plan view, and from the front side to the rear side from the left and right outer side to the left and right inner side. It is provided in a slanted shape. In other words, when the vegetable harvester 1 is viewed from the front, the left and right drawing and conveying devices 24 are provided in an inclined shape from the lower side to the upper side so as to go from the left and right outer sides to the left and right inner sides. In addition, the drawing-out conveying apparatus 24 on either side is provided symmetrically about the left-right direction.

In such an arrangement configuration of the drawing and conveying devices 24, the left and right drawing and conveying devices 24 are inclined in a plan view so that the conveying end portions are brought close to the conveying end portion of the central drawing and conveying device 24, The transport start end is spaced apart from the transport start end of the central pull-out transport device 24 . Therefore, as a whole, the three sets of pull-out conveying devices 24 gradually widen outward from the rear side to the front side in the left-right direction. In this arrangement configuration of the drawing and conveying device 24 with its width in the lateral direction gradually widened from the rear side to the front side, the arrangement configuration of the seven weed dividing devices 21 and the six raking devices 22 for the six weeds. It corresponds to

[Shoulder aligning device]
The shoulder aligning device 25 is provided on the rear side of the pull-out conveying device 24 . Specifically, the shoulder aligning device 25 is provided below the downstream nipping and conveying device 82 of the drawing and conveying device 24 .

The shoulder aligning device 25 is an example of a position aligning device, and is a device for aligning the height positions of the bulb portions 2a of the onions 2 being transported by the downstream clamping and transporting device 82 of the pulling-out transporting device 24 . The shoulder aligning device 25 aligns the height of the shoulders of the onions 2 conveyed by the downstream clamping and conveying device 82 using the upper portion of the bulb portion 2a of the onion 2 as the shoulder.

The shoulder aligning device 25 is provided along a rearwardly rising inclined plane that is gentler than the inclination of the drawing and conveying device 24 in a side view. The inclination angle of the shoulder aligning device 25 with respect to the horizontal direction is, for example, about 20°. A shoulder aligning device 25 is provided corresponding to each drawing and conveying device 24 . Therefore, the vegetable harvester 1 has three shoulder aligning devices 25 arranged side by side on the left side, the middle side, and the right side.

The shoulder aligning device 25 has a pair of conveyor belts 94, which are endless rotating belts. It has a configuration in which it is wound around a driven pulley 96 which is a driven wheel. That is, the shoulder aligning device 25 includes a pair of left and right belt conveying bodies 25A in which the conveying belt 94 is wound around a driving pulley 95 and a driven pulley 96, and conveys the foliage portion 2b positioned between the left and right belt conveying bodies 25A. is configured as

The pair of conveying belts 94 sandwiches the foliage portion 2b by the portions facing each other, and rotates in the direction of moving the mutually facing sides in the conveying direction of the foliage portion 2b by the rotational driving of the driving pulley 95 . The drive pulley 95 and the driven pulley 96 have a rotation axis direction perpendicular to the inclination of the shoulder aligning device 25 in a side view of the machine body. A tension pulley or the like is provided for the conveying belt 94 . The gap between the facing surfaces of the pair of conveyor belts 94 is set narrower than the bulb portion 2a of a general onion 2. As shown in FIG.

The shoulder aligning device 25 positions the front end of each belt conveying body 25A directly below the front end of each downstream belt holding member 82A of the downstream holding and conveying device 82. As shown in FIG. As a result, the left and right driving pulleys 95 positioned at the front end of the shoulder aligning device 25 are positioned below and near the left and right driven pulleys 88 positioned at the front end of the downstream clamping and conveying device 82 . When viewed from the side, the shoulder aligning device 25 and the downstream pinching and conveying device 82 form a substantially "V" shape together with the downstream pinching and conveying device 82 due to the difference in inclination angle between them. The space between the top and bottom is gradually widened from the front side to the back side.

The shoulder aligning device 25 is interlocked with the pull-out conveying device 24 , receives power transmission from the pull-out conveying device 24 , and drives in synchronization with the pull-out conveying device 24 . The left and right belt conveying bodies 25A are interlocked and connected to the corresponding belt clamping bodies 24A. The drive pulleys 95 of the left and right belt conveying bodies 25A of the shoulder aligning device 25 are rotationally driven by rotational power transmitted from the belt clamping bodies 24A of the pull-out conveying device 24, respectively. The driving pulley 95 of the shoulder aligning device 25 is interlocked with a support shaft 91 that interlocks and connects the downstream belt clamping body 82A and the upstream belt clamping body 81A in each belt clamping body 24A. receive the input of

Rotational power of the support shaft 91 is transmitted via a first gear 97 and a second gear 98 to an input shaft 99 having a drive pulley 95 fixed to one end thereof (see FIG. 16). The first gear 97 is fixed to the lower end of the support shaft 91 . The second gear 98 is fixed to the upper end of an input shaft 99 extending upward from the drive pulley 95 . The support shaft 91 and the input shaft 99 have their axial directions different from each other according to the difference in the inclination angles of the pull-out conveying device 24 and the shoulder aligning device 25 . The first gear 97 and the second gear 98 are configured to engage with each other obliquely according to the difference in axial direction between the support shaft 91 and the input shaft 99 .

In this manner, the pull-out conveying device 24 and the shoulder aligning device 25 are configured to extract the driving force of the upstream nipping and conveying device 81 and the shoulder aligning device 25 from the driven pulley 88 of the downstream nipping and conveying device 82 . That is, the driving pulley 84 of the upstream pinching and conveying device 81 is fixed to the portion of the support shaft 91 of the driven pulley 88 that extends upward from the driven pulley 88 , and the driving force for the upstream pinching and conveying device 81 is is taken out. A second gear 98 fixed to an input shaft 99 supporting a driving pulley 95 of the shoulder aligning device 25 is meshed with a portion of the support shaft 91 of the driven pulley 88 that extends downward from the driven pulley 88 . A first gear 97 is fixed, and the driving force to the shoulder aligning device 25 is taken out.

The shoulder aligning device 25 positions the stem and leaf part 2b of the onion 2 transferred from the upstream pinching and conveying device 81 to the downstream pinching and conveying device 82 between the pair of conveying belts 94, and the pair of conveying belts 94 align the bulb of the onion 2. By pressing the shoulder portion of the portion 2a, the height position of the bulb portion 2a is aligned at a predetermined height position. That is, the shoulder aligning device 25 positions the bulb portion 2a below a pair of conveying belts 94 disposed at a gentle inclination with respect to the conveying belts 86 of the downstream side nipping conveying device 82. As the onion 2 is conveyed by the onion 2, the pair of conveying belts 94 are brought into contact with both shoulders of the bulb portion 2a to stop the onion 2 during the conveying movement from moving upward, and the height position of the onion 2 is handled. are aligned (see the movement locus S1 of the onion 2 in FIG. 6). Here, since the pinching force of the pair of conveying belts 86 of the downstream pinching conveying device 82 is set larger than the pinching force of the pair of conveying belts 94 of the shoulder aligning device 25, the onion 2 can be handled. be done. The height-aligned onions 2 are guided to the foliage cutting device 26 at the rear.

[Foliage cutting device]
The foliage cutting device 26 is provided on the rear upper portion of the shoulder aligning device 25 and is arranged below the intermediate portion of the downstream side clamping and conveying device 82 in the conveying direction. The stem and leaf cutting device 26 is a device for cutting the stem and leaf portion 2b of the onion 2 conveyed by the pulling and conveying device 24, separating the bulb portion 2a from the stem and leaf portion 2b, and dropping it. The stem and leaf cutting device 26 cuts the stems and leaves 2b of the onion 2 whose shoulders have been leveled by the shoulder aligning device 25 so that the stems and leaves remain on the bulb 2a side with substantially the same length.

The foliage cutting device 26 has a pair of disk-shaped rotary blades 100 provided coaxially with the driven pulley 96 on each belt conveyor 25A of the shoulder aligning device 25 . A pair of rotary blades 100 are provided substantially bilaterally symmetrically across the movement path of the onion 2 with their outer edges slightly overlapping each other. In this embodiment, the left end of the right rotary blade 100 overlaps the right end of the left rotary blade 100 (see FIG. 7).

The rotary blade 100 is supported by the support shaft 96 a of the driven pulley 96 and is provided directly above the driven pulley 96 in parallel with the driven pulley 96 . The rotary blade 100 rotates integrally with the driven pulley 96 of the shoulder aligning device 25 operated by receiving rotational power transmitted from the drawing and conveying device 24 .

The position between the pair of rotary blades 100 in a state in which the onion 2, which is moving obliquely rearward and upward as a result of the conveying action of the downstream side clamping and conveying device 82, is locked in upward movement by the shoulder aligning device 25 and positioned in the vertical direction. is induced to The stem and leaf portion 2b positioned between the pair of conveyor belts 94 of the shoulder aligning device 25 reaches between the pair of rotary blades 100 and is cut by the rotating rotary blades 100. As shown in FIG. Here, since the stem and leaf portion 2b is subjected to the action of the rotary blade 100 while being pulled while being clamped by the downstream clamping and conveying device 82 and the shoulder aligning device 25, it is cut satisfactorily. The bulb portion 2a separated from the stem and leaf portion 2b by the pair of rotary blades 100 falls and is guided to a predetermined location.

As described above, the vegetable harvesting machine 1 according to the present embodiment has three unit configurations, one on the left side, one in the middle, and one on the right side, each of which includes the pull-out conveying device 24, the shoulder aligning device 25, and the foliage cutting device 26. ing. Hereinafter, a unit configuration including the pull-out conveying device 24, the shoulder aligning device 25, and the foliage cutting device 26 is referred to as a "conveying/cutting unit configuration 80". 6 and 7 show the left transport/cutting unit configuration 80. As shown in FIG.

[Soil removal device]
A soil removing device 27 receives the onion 2 pulled out from the soil, and sends the onion 2 backward while removing soil and mud adhering to the onion 2. - 特許庁That is, the soil removing device 27 is a device that receives the bulb portion 2a cut off by the foliage cutting device 26, and feeds the bulb portion 2a rearward while removing soil and mud adhering to the bulb portion 2a.

The soil removing device 27 is provided in the left and right intermediate part of the machine body below the shoulder aligning device 25 and the foliage cutting device 26 . The soil removing device 27 is provided in a state of being supported by the working section frame 30 . The soil removing device 27 is provided as a common configuration for the three conveying/cutting unit configurations 80 . That is, the soil removing device 27 receives the falling bulb portion 2a by cutting the stem and leaf portion 2b from each of the transporting and cutting unit configurations 80 on both the left and right sides and the center, and removes soil from the bulb portion 2a. 2a is conveyed to the rear side.

The soil removal device 27 has three soil removal foils 110 (110A, 110B, 110C) as soil removal rotating bodies, and the soil removal foils 110 are caused to act on the bulb portion 2a, thereby adhering to the bulb portion 2a. Knock off any dirt or mud that may be present. The soil removal foil 110 is a rotating body whose rotational axis direction is the left-right direction of the machine body. The upper side of the three soil removal foils 110 is the conveying surface side of the bulb portion 2a, and the action of the three soil removal foils 110 causes the bulb portion 2a to be conveyed rearward. Therefore, the rotational directions of the three soil removing wheels 110 that are rotationally driven are all clockwise (clockwise direction) when viewed from the left side (see arrow X1 in FIG. 11).

The three soil removal foils 110 are arranged side by side from the front side to the rear side. The three soil removing foils 110 are referred to as a first soil removing foil 110A, a second soil removing foil 110B, and a third soil removing foil 110C in order from the front side.

The three soil removing wheels 110 are provided rotatably while being constructed between the left and right soil removing frames 111. - 特許庁The soil removal frame 111 is a vertical plate-like frame portion, and is provided so as to cover most of the soil removal foils 110 according to the arrangement of the three soil removal foils 110 in a side view.

A front wall portion 112 is provided between the front end portions of the left and right soil removing frames 111 . The front wall portion 112 has substantially the same height as the soil removal frame 111 . A bottom plate 113, which is a perforated plate having a plurality of openings, is provided below the portion surrounded by the left and right soil removal frames 111 and the front wall portion 112. As shown in FIG. The front wall portion 112 supports the lower end portion of the forward leaning support frame portion 34 .

In this way, the left and right soil removing frames 111, the front wall portion 112, and the bottom plate 113 constitute a box-shaped frame portion with an open rear side. 110 is provided. A conveyor 7 is connected to the rear side of this box-shaped frame portion.

The soil removal wheel 110 has a drive shaft 115 that rotates by receiving power transmitted from the engine 10, and a plurality of wheel bodies 116 formed by radially arranging rod-like protrusions. The drive shaft 115 and the plurality of wheel bodies 116 are provided so as to rotate integrally.

The drive shaft 115 of the soil removal wheel 110 is a rod-shaped member including a shaft portion having a rectangular cross-sectional shape in the middle. The foil body 116 is constructed as an integral member made of an elastic material such as rubber. As the elastic body constituting the foil body 116, a material that is elastically deformable and does not damage the bulb portion 2a is used.

The foil body 116 has a rotation base 116a and a plurality of protrusions 116b radially projecting from the rotation base 116a. The rotation base 116a is a substantially cylindrical portion through which the drive shaft 115 is passed. The rotary base 116 a has a through-hole having a rectangular cross-sectional shape corresponding to the cross-sectional shape of the drive shaft 115 . The projecting portion 116b is formed in a straight line along the radial direction of the rotation base portion 116a, and has a tapered shape in which the width gradually narrows from the base side to the tip side when viewed in the axial direction (side view) of the drive shaft 115. have The projecting portion 116b is provided in the axial center portion of the rotation base portion 116a.

The plurality of protrusions 116b are provided at regular intervals in the circumferential direction of the rotary base 116a. In this embodiment, six rotation bases 116a are provided at approximately 60° intervals. Thus, the foil main body 116 has a so-called star foil shape in which a plurality of (six) projections 116b protrude radially. In the soil removal foil 110 , a plurality of foil bodies 116 are provided in a range covering substantially the entire lateral direction between the left and right soil removal frames 111 .

The three soil removal foils 110 are provided in a positional relationship such that the outer peripheral portions of the rotation trajectories of the protrusions 116b overlap each other between the adjacent soil removal foils 110 when viewed from the side. As shown in FIG. 11, the rear part of the rotation locus A1 drawn by the tip of the protrusion 116b of the first soil removal foil 110A and the front side of the rotation locus A2 drawn by the tip of the protrusion 116b of the second soil removal foil 110B overlap. rapping. In addition, the rear portion of the rotation locus A2 of the second soil removing wheel 110B overlaps the front side of the rotation locus A3 drawn by the tip of the protrusion 116b of the third soil removing wheel 110C. The amount of overlap between the soil removal foils 110 adjacent to each other is, for example, about half the length of the protrusion 116b.

Adjacent soil removal foils 110 have a plurality of foil bodies 116 staggered in the axial direction of the drive shaft 115 so as not to interfere with each other between the protrusions 116b. In this embodiment, the first scraping foil 110A and the third scraping foil 110C have nine foil bodies 116, and the second scraping foil 110B positioned between them has eight foil bodies 116. have That is, the second soil removal foil 110B has the front and rear soil removal foils 110 (110A, 110C) having nine foil bodies 116, and the protrusions 116b of the foil body 116 are alternately positioned in the axial direction of the drive shaft 115. It has eight foil bodies 116 so as to allow

A plurality of foil bodies 116 included in each soil removal foil 110 have a common shape and size. In each soil removal foil 110 , the plurality of foil bodies 116 are provided in a common phase with respect to the rotation direction of the soil removal foil 110 . In other words, the plurality of wheel bodies 116 are provided so that the six protrusions 116b overlap when viewed in the axial direction of the drive shaft 115 . The phases of the plurality of foil bodies 116 in each soil removal foil 110 may be different.

The three soil removal wheels 110 are rotationally driven by receiving rotational driving force taken out from the conveyor 7 driven by the transmission of power from the engine 10 . The drive shafts 115 of the three soil removal wheels 110 protrude rightward from the right soil removal frame 111, and a sprocket or the like for power transmission is provided on the right projecting portion of the drive shaft 115. It is

As shown in FIG. 15, the drive shaft 115 of the third scraping wheel 110C has an input sprocket 118a for receiving the transmission of the rotational driving force extracted from the conveyor 7, and the drive shaft 115 of the second scraping wheel 110B. An output sprocket 118b is provided for transmitting rotational power to. The drive shaft 115 of the second scraping wheel 110B includes an input sprocket 119a for receiving the chain winding together with the output sprocket 118b, and an output sprocket 119b for transmitting rotational power to the driving shaft 115 of the first scraping wheel 110A. is provided. The drive shaft 115 of the first scraping wheel 110A is provided with an output sprocket 119b and an input sprocket 120 for receiving the winding of the chain.

In the soil removal device 27 having the above configuration, the fallen bulb portion 2a is removed from the three rotating soil removal foils 110 by the action of the projection portion 116b of the foil main body 116, and is then removed. It is conveyed toward the conveyor 7 on the side. Here, the bulb portion 2a that has fallen to the soil removal device 27 is received by the frame-like portion constituted by the left and right soil removal frames 111 and the front wall portion 112 without falling from the top of the soil removal foil 110 to the outside. At the same time, the earth removal foil 110 reliably receives the earth removing action and the conveying action. The soil or the like dropped from the bulb portion 2a drops from the opening of the bottom plate 113 and is discharged to the field. Note that the foil body 116 of the soil removal foil 110 is not limited to the star foil shape as in the present embodiment, and may be, for example, one having a blade-like projecting piece, or a polygonal roller.

[Conveyor]
The conveyor 7 is a device that receives the onions 2 conveyed by the pull-out conveying device 24 and conveys them rearwardly upward (rearward obliquely upward). In the vegetable harvester 1, the conveyor 7 receives the bulb portion 2a from which the foliage portion 2b has been cut by the foliage cutting device 26 from the soil removal device 27, and conveys the bulb portion 2a backward and upward.

The conveyor 7 is provided on the rear side of the soil removal device 27, and is provided so as to form a continuous transportation path having the same width as the transportation path of the bulb portion 2a in the soil removal device 27. As shown in FIG. The conveyor 7 forms a conveying path from the rear side of the soil removal device 27 to the rear obliquely upward direction. The inclination angle of the transport path of the conveyor 7 with respect to the horizontal direction is approximately the same as the inclination angle of the pull-out transport device 24, for example. Conveyor 7 extends in a rearward upward slanted shape so that the transport start end is located behind soil removal device 27 and the transport end part is located right of operation box 12 .

The conveyor 7 is a bar conveyor having a plurality of bars 121 extending in the horizontal direction. The conveyor 7 includes a projection bar 121A having a plurality of projections 122 at predetermined intervals on the plurality of bars 121. As shown in FIG. In this embodiment, the projection bars 121A are provided every three.

The protrusion 122 has an elongated, substantially triangular shape when viewed from the side, and protrudes in a direction substantially perpendicular to the conveying surface of the conveyor 7 . In the projecting bar 121A, the projections 122 are provided at eight locations at predetermined intervals in the axial direction of the projecting bar 121A.

Both ends of the bar 121 are fixed to endless chains 126 arranged in chain cases 125 provided on both left and right sides of the conveyor 7 . That is, the bar 121 is provided in a state of being suspended between the left and right chains 126 .

The left and right chain cases 125 form left and right side walls of the conveyor 7 . The front sides of the left and right chain cases 125 are connected to the soil removal frames 111 forming the left and right side walls of the soil removal device 27, respectively. Thus, the soil removal device 27 and the conveyor 7 are configured as one unit.

Conveyor 7 has a conveyor input shaft 127 provided at the rear end of conveyance located on the upper rear side, and a conveyor driven shaft 128 provided at the beginning end of conveyance located on the lower front side. The conveyor input shaft 127 receives rotational power from the engine 10 and is rotationally driven. An input sprocket 129 for receiving transmission of rotational power from the engine 10 is fixed to the right end of the conveyor input shaft 127 (see FIG. 15).

Rotational power of the conveyor input shaft 127 is transmitted to the conveyor driven shaft 128 via left and right chains 126 supporting the plurality of bars 121 . For this reason, sprockets 131 and 132 for receiving the windings of the left and right chains 126 are fixed to the conveyor input shaft 127 and the conveyor driven shaft 128, respectively.

In the conveyor 7 having such a configuration, the bar 121 moves with the rotation of the left and right chains 126, so that the bulb portion 2a is held by the plurality of projections 122 of the projecting bar 121A, and is moved diagonally backward and upward. transported to

A conveyor driven shaft 128 of the conveyor 7 is located immediately behind the third scraping wheel 110C. As shown in FIG. 11, the conveyor 7 is provided so that the rotation trajectory B1 of the tip of the projection 122 around the axis of the conveyor driven shaft 128 is adjacent to the rotation trajectory A3 of the third soil removing wheel 110C. In other words, the front side of the rotation locus B1 by the conveyor 7 is located in the vicinity of the rear side of the rotation locus A3 of the third dirt removal wheel 110C. With such a configuration, a continuous conveying surface is formed from the third soil removing foil 110C to the conveying starting end of the conveyor 7, and the bulb portion 2a is inherited from the soil removing device 27 to the conveyor 7.

A comb-shaped guide member 135 is provided at a transfer portion from the soil dropping device 27 to the conveyor 7 . The comb-shaped guide body 135 is a plate-shaped member having a comb-shaped outer shape, and is provided so as to follow the conveying surface from the soil removal device 27 to the conveyor 7 . The comb-shaped guide body 135 is a metal member made of, for example, an iron plate. However, the comb-shaped guide body 135 may be a member made of resin. The comb-shaped guide body 135 has a shape that fills the gap between the third soil removal foil 110C and the conveyor 7 with the plurality of projections 122 positioned on the front side of the conveyor driven shaft 128 when viewed from above. .

The comb-shaped guide body 135 has a comb-teeth shape on the front side so as not to interfere with the moving protrusion 116b that moves with the rotation of the third soil removal wheel 110C, and has a comb-shaped guide body 135 on the rear side. It has a comb-like shape so as not to interfere with the protrusions 122 of the protrusion bar 121A that moves along with the driving of the . The comb-shaped guide body 135 includes a linear base portion 136 extending in the left-right direction, a plurality of front-side protrusion portions 137 projecting forward from the base portion 136, and a plurality of rear-side protrusion portions projecting rearward from the base portion 136. 138. The base portion 136, the front projecting piece portion 137, and the rear projecting piece portion 138 are plate-shaped portions along a common plane.

The plurality of front projecting pieces 137 are provided so as to fill the gaps between the movement trajectories of the plurality of projecting portions 116b of the third soil removing wheel 110C in plan view. The recesses 137a formed by the adjacent front projecting pieces 137 secure a moving path for the plurality of projecting portions 116b of the third soil removing wheel 110C. The plurality of rear projecting pieces 138 are provided so as to fill the gaps between the movement trajectories of the plurality of projections 122 on the front side of the conveyor driven shaft 128 in plan view. A moving path for the plurality of projections 122 on the front side of the conveyor driven shaft 128 is secured by the recesses 138 a formed by the adjacent rear projecting pieces 138 . The base portion 136 is an intermediate portion connecting the plurality of front projecting piece portions 137 and the plurality of rear projecting piece portions 138 .

In the present embodiment, eight front projecting pieces 137 correspond to the eight gaps between the movement trajectories of the adjacent projecting portions 116b for the third soil removal foil 110C having nine foil bodies 116. formed. Seven rear projecting pieces 138 are formed corresponding to the seven gaps between the movement trajectories of the adjacent projections 122 .

As shown in FIG. 11, the comb-shaped guide body 135 is provided at a position above an imaginary plane E1 passing through the central axis C3 of the third soil removing wheel 110C and the central axis D1 of the conveyor driven shaft 118. there is Further, the comb-shaped guide body 135 is provided along a plane substantially parallel to the virtual plane E1. The comb-shaped guide body 135 has fixed surface portions 139 bent at right angles to the base portion 136 at both left and right ends thereof. By fixing it, it is provided in a fixed state.

In this manner, the vegetable harvester 1 has the comb-shaped guide body 135 as a guide member provided between the third soil removal foil 110C and the conveyor 7 so as to fill the gap therebetween. Due to the comb-shaped guide body 135, the bulb portion 2a conveyed at the transfer portion from the soil removal device 27 to the conveyor 7 is smoothly transferred without falling.

The soil removal device 27 has a structure in which a plurality of soil removal wheels 110, which are rollers having a plurality of protrusions 116b projecting radially when viewed in the rotation axis direction, are arranged with the left-right direction as the rotation axis direction. In the soil removal device 27 having such a configuration, the arrangement of the three soil removal foils 110 is devised in relation to the conveyor 7 .

In the soil removal device 27, the front two soil removal foils 110 of the three soil removal foils 110, that is, the first soil removal foil 110A and the second soil removal foil 110B are at the same height or substantially the same height position. is provided. That is, an imaginary plane E2 passing through the central axis C1 of the first soil removal foil 110A and the central axis C2 of the second soil removal foil 110B is a horizontal or substantially horizontal plane.

With respect to the two soil removal foils 110 on the front side, the third soil removal foil 110C located on the rear side is provided at a position higher than the two soil removal foils 110 on the front side. Specifically, in the vertical direction, the third soil removing foil 110C is provided at a lower end substantially at the same height as the central axis of the front two soil removing foils 110 or at a height positioned below the central axis. It is Further, in a side view, a straight line F1 connecting the central axis C2 of the second soil removing foil 110B and the central axis C3 of the third soil removing foil 110C forms an angle of approximately 30° with respect to the horizontal direction.

In such an arrangement configuration of the three soil removal foils 110, the first soil removal foil 110A and the second soil removal foil 110B located on the front side are attached to the bulb portion 2a by rolling the bulb portion 2a. It mainly functions as a soil dropper that drops soil and mud. Further, the third soil removal foil 110C located on the rear side functions as a transfer section for transferring the bulb portion 2a from the soil removal section to the conveyor 7. As shown in FIG.

In this way, the soil removal device 27 has three soil removal foils 110 as functional units, a soil removal portion including a first soil removal foil 110A and a second soil removal foil 110B provided at substantially the same height position, and a third soil removal foil 110B. It has a transfer part by soil removal foil 110C. The third soil removal foil 110C forming the transfer portion is provided at a position higher than the first soil removal foil 110A and the second soil removal foil 110B forming the soil removal portion.

[Auxiliary Conveyor]
As shown in FIGS. 11 and 13 , the vegetable harvester 1 has an auxiliary conveying device 140 provided above the soil removal device 27 . The auxiliary conveying device 140 is a structure for giving a feeding action to the conveyor 7 to the bulb portion 2a that is fed from the soil removing device 27 to the conveyor 7. As shown in FIG. The auxiliary conveying device 140 has an auxiliary conveying wheel 141 as its device body.

The auxiliary conveying foil 141 is provided above the delivery portion between the third scraping foil 110C and the conveying start end of the conveyor 7 . The auxiliary conveying foil 141 functions as a raking foil for raking the bulb portion 2a from the soil removal device 27 to the conveyor 7. As shown in FIG.

The auxiliary conveying wheel 141 is a rotating body whose rotational axis direction is the lateral direction of the machine body, and has the same configuration as the soil removing wheel 110 . The auxiliary transport wheel 141 has a drive shaft 142 that rotates by receiving power transmitted from the engine 10, and a plurality of wheel bodies 143 formed by radially arranging rod-like protrusions. The drive shaft 142 and the plurality of wheel bodies 143 are provided so as to rotate integrally.

The drive shaft 142 is a rod-shaped member including a shaft portion having a rectangular cross-sectional shape at its intermediate portion. The foil body 143 is constructed as an integral member made of an elastic material such as rubber. As the elastic body constituting the foil body 143, a material that is elastically deformable and does not damage the bulb portion 2a is used.

The foil body 143 has a rotation base 143a and a plurality of protrusions 143b radially projecting from the rotation base 143a. The rotation base 143a is a substantially cylindrical portion through which the drive shaft 142 is passed. The rotary base 143 a has a through hole portion having a rectangular cross-sectional shape corresponding to the cross-sectional shape of the drive shaft 142 . The protrusion 143b is formed linearly along the radial direction of the rotation base 143a, and has a tapered shape in which the width gradually narrows from the base side to the tip side when viewed in the axial direction (side view) of the drive shaft 142. have The protrusion 143b is provided in the axial center of the rotation base 143a.

The plurality of protrusions 143b are provided at regular intervals in the circumferential direction of the rotation base 143a. In this embodiment, six rotation bases 143a are provided at approximately 60° intervals. Thus, the foil main body 143 has a so-called star foil shape in which a plurality of (six) projections 143b protrude radially. In the auxiliary conveying foil 141, a plurality of foil bodies 143 are provided in the same range as the foil bodies 116 in the soil removal foil 110 in the horizontal direction. Incidentally, the foil body 143 of the auxiliary transport foil 141 may be equivalent to the foil body 116 of the soil removing foil 110 .

In this way, the auxiliary conveying device 140 includes the auxiliary conveying wheel 141, which is a roller (main roller) having a plurality of projections 143b projecting radially when viewed in the rotation axis direction. The auxiliary conveying wheel 141 is provided so as to rotate in the direction in which the bulb portion 2a is conveyed rearward by a plurality of protrusions 143b.

The auxiliary conveying foil 141 causes the projecting portion 143b to act on the bulb portion 2a inherited from the third soil removal foil 110C to the conveyor 7 from above, and feeds the bulb portion 2a to the conveyor 7 side. Therefore, the direction of rotation of the rotationally driven auxiliary transport wheel 141 is opposite to that of the soil removal wheel 110, and is counterclockwise (counterclockwise direction) when viewed from the left side (see arrow Y1 in FIG. 11).

The auxiliary conveying foil 141 is supported by a chain case 145 extending forward from the outside of the chain case 125 on the left side of the conveyor 7 and a rotating support arm 146 extending forward from the outside of the chain case 125 on the right side of the conveyor 7. , supported at both left and right ends.

The chain case 145 has an elongated plate-like outer shape whose plate thickness direction is the left-right direction, and the rear end portion of the chain case 145 is rotatably supported with respect to the left chain case 125 . The chain case 145 supports the left end of the drive shaft 142 of the auxiliary carrier wheel 141 at its front end. The rotary support arm 146 rotatably supports the rear end of the linear arm main body 146 s with respect to the right chain case 125 . The rotation support arm 146 has a shaft support portion 146a on the tip side of the arm body portion 146s, and supports the right end portion of the drive shaft 142 of the auxiliary transport wheel 141 by the shaft support portion 146a.

In this manner, the auxiliary carrier wheel 141 is rotatably supported between the chain case 145 and the leading end of the rotary support arm 146 with the left-right direction as the rotation axis direction. The chain case 145 and the rotary support arm 146 are supported by the conveyor 7 so as to be rotatable about a common rotary axis G1 along the horizontal direction (see FIG. 11). The chain case 145 and the rotating support arm 146 are connected to each other via the auxiliary transport wheel 141, and are provided so as to integrally rotate about the rotation axis G1.

By rotating the chain case 145 and the rotating support arm 146 about the rotation axis G1, the auxiliary conveying wheel 141 supported between them moves substantially vertically with respect to the conveying surface of the bulb portion 2a. do. By adjusting the position of the auxiliary conveying wheel 141 by rotating the chain case 145 and the rotating support arm 146, the height of the auxiliary conveying wheel 141 with respect to the conveying surface of the bulb portion 2a between the soil removal device 27 and the conveyor 7 is increased. adjusted.

In this manner, the auxiliary transport wheel 141 is provided so as to be movable toward and away from the soil dropping device 27 by rotating the chain case 145 and the rotating support arm 146 . That is, in adjusting the height of the auxiliary transport wheel 141, the downward movement of the auxiliary transport wheel 141 is the movement in the direction approaching the soil removal device 27, and the upward movement of the auxiliary transport wheel 141 is the soil. It is moved in a direction away from the dropping device 27 . The vertical movement direction of the auxiliary conveying wheel 141 is substantially orthogonal to the direction of the surface along which the base portion 136 and the like of the comb-shaped guide body 135 extend when viewed from the side.

The chain case 145 and the rotating support arm 146 are each urged in a direction to move the auxiliary conveying foil 141 downward with respect to the conveyor 7 , that is, in a direction to approach the soil removal device 27 .

As shown in FIG. 14A, the chain case 145 is biased in a direction to move the front side downward around the rotation axis G1 by the elastic force of the biasing spring 147 provided between the chain case 145 and the conveyor 7. ing. The biasing spring 147 is provided on the rear side of the chain case 145 while being supported on the lower side of the left chain case 125 in a side view.

The urging spring 147 is a coil spring having hook-shaped engaging portions at both ends, and is provided in a state in which the direction of expansion and contraction thereof is aligned with the direction of inclination (conveyance direction) of the conveyor 7 when viewed from the side. The biasing spring 147 is attached to the left chain case 125 by a support plate 341 attached to the left side surface of the chain case 125, an L-shaped mounting bracket 342 fixed to the lower part of the support plate 341, and a mounting bracket 342. is supported via a support rod 343 penetrating through the lower surface of the .

The support rod 343 is a linear rod-shaped member, and is provided in a state in which it penetrates the mounting bracket 342 protruding from the lower side of the support plate 341 and is fixed to the mounting bracket 342 with a fastener such as a nut. It is The support rod 343 is provided with its axial direction aligned with the inclined direction (conveyance direction) of the conveyor 7 . A locking portion on the rear side of the biasing spring 147 is locked and supported in a locking hole 343 a formed in the front end portion of the support rod 343 .

The front side of the urging spring 147 is locked and supported by a locking member 344 fixed to the rear surface portion 145 a of the chain case 145 . The locking member 344 protrudes downward from the lower portion of the rear surface portion 145a located on the rear side of the rotation axis G1 in the chain case 145, and the biasing spring 147 is inserted into the hole portion 344a formed in the lower end portion. The locking portion on the front side of the is locked.

By the elastic force of the biasing spring 147 provided between the conveyor 7 and the chain case 145, the chain case 145 is pulled obliquely rearward and upward from the portion behind the rotation axis G1. As a result, the chain case 145 is urged in the downward direction to move the auxiliary conveying wheel 141 downward (see arrow L1 in FIG. 14A).

Regarding the downward rotation of the chain case 145, it is rotated at a predetermined position by a stopper support rod 345 provided between the front part of the chain case 145 and the left chain case 125 (the left side of the conveyor 7). is regulated. The stopper support rod 345 is attached to an L-shaped mounting bracket 346 fixed to the left side of the conveyor 7 .

The stopper support rod 345 is a linear rod-shaped member, and is inserted through a mounting bracket 346 protruding from the left side of the conveyor 7 with the substantially vertical direction as an axial direction. It is provided in a fixed state.

The upper end portion of the stopper support rod 345 is inserted into the chain case 145 through the lower surface portion 145b of the chain case 145 . The stopper support rod 345 is provided with a lower engaging portion 347, which is a diameter-enlarged portion formed by screwing a nut or the like, on the lower portion of the lower surface portion 145b of the chain case 145. As shown in FIG. The lower locking portion 347 functions as a stopper to restrict downward rotation of the chain case 145 .

At the upper end of the stopper support rod 345 inserted into the chain case 145, an upper engaging portion 348, which is an enlarged diameter portion similar to the lower engaging portion 347, is provided. The upper locking portion 348 functions as a retaining portion for the stopper support rod 345 . By adjusting the position of the lower engaging portion 347 on the stopper support rod 345, the height of the chain case 145 in its natural state is adjusted. Also, the range of rotation of the chain case 145 is defined by the distance between the lower engagement portion 347 and the upper engagement portion 348 of the stopper support rod 345 .

As shown in FIG. 14B, similar to the chain case 145, the rotating support arm 146 moves forward about the rotating axis G1 due to the elastic force of the biasing spring 148 provided between it and the conveyor 7. It is biased in a direction to move downward. The biasing spring 148 is provided on the rear side of the rotating support arm 146 in a state of being supported on the lower side of the right chain case 125 in a side view.

The urging spring 148 is a coil spring similar to the urging spring 147 and is supported on the conveyor 7 by a structure that is bilaterally symmetrical and similar to the supporting structure of the urging spring 147 . That is, the biasing spring 148 is supported by the right chain case 125 via the support plate 341 , the mounting bracket 342 and the support rod 343 .

The front side of the urging spring 148 is locked and supported by the urging arm portion 146 c of the rotation support arm 146 that extends rearward of the rotation support arm 146 . The urging arm portion 146c is a portion that rotates integrally with the arm body portion 146s of the rotation support arm 146 about the rotation axis G1, and extends rearward and downward from the base end portion of the arm body portion 146s. there is A locking portion on the front side of the biasing spring 148 is locked in a hole portion 146d formed at the tip of the biasing arm portion 146c.

Due to the elastic force of the urging spring 148 provided between the conveyor 7 and the rotary support arm 146, the rotary support arm 146 is pulled obliquely upward from the rear side of the rotary axis G1. It is As a result, the rotation support arm 146 is urged in the downward direction to move the auxiliary transport wheel 141 downward (see arrow L2 in FIG. 14B) for rotation about the rotation axis G1.

A structure similar to that of the chain case 145 is used to rotate the rotating support arm 146 in the downward direction. ), the rotation is regulated at a predetermined position by a stopper support rod 350 provided between. The stopper support rod 350 is attached to an L-shaped mounting bracket 351 fixed to the right side surface of the conveyor 7 .

The upper end portion of the stopper support rod 350 is inserted through the lower surface portion 146e of the rotation support arm 146 and inserted into the hollow arm body portion 146s of the rotation support arm 146 . In the stopper support rod 350 , a lower locking portion 352 that functions as a stopper that restricts downward rotation is provided at a portion below the lower surface portion 146 e of the rotation support arm 146 . An upper locking portion 353 functioning as a retaining portion is provided at the upper end portion inserted into the . By adjusting the position of the lower locking portion 352 on the stopper support rod 350, the height of the rotation support arm 146 in the natural state is adjusted. The rotation range of the rotation support arm 146 is defined by the distance between the lower engagement portion 352 and the upper engagement portion 353 of the stopper support rod 350 .

As described above, in the auxiliary conveying device 140, the auxiliary conveying wheel 141 is rotated by the chain case 145 and the rotating support arm 146 which are elastically supported with respect to the conveyor 7 by the left and right urging springs 147 and 148, respectively. It is supported so that it can swing up and down about the axis G1 (see FIGS. 14A and 14B and arrow L3). The auxiliary conveying wheel 141 rotates against the urging forces of the left and right urging springs 147 and 148 when ascending around the rotation axis G1.

The auxiliary conveying device 140 is configured to be driven by power taken from the conveyor 7 . That is, the auxiliary conveying device 140 rotates the auxiliary conveying wheel 141 by receiving power transmitted from the conveyor 7 .

As shown in FIG. 15, the power of the conveyor 7 is taken out as rotational power by the power take-off shaft 151 and transmitted to the drive shaft 142 of the auxiliary transport wheel 141 by the chain transmission mechanism 152 provided in the chain case 145. . The power take-off shaft 151 has its right portion positioned inside the left chain case 125, and the input sprocket 153 fixed to the right end of the power take-off shaft 151 is engaged with the chain 126 inside the chain case 125. .

The input sprocket 153 is engaged with the chain 126 at the lower portion of the conveyor 7 from the side opposite to the conveying surface side of the bulb portion 2a, that is, from the outer peripheral side of the lower side of the chain 126 (see FIG. 11). In the left chain case 125 , a tension roller 154 is provided near the front of the input sprocket 153 and engaged with the chain 126 from the inner peripheral side of the chain 126 . In this way, the power of the auxiliary conveying wheel 141 is taken out from the intermediate portion of the conveyor 7 while rotating in the opposite direction to the conveying direction of the conveyor 7 .

The power take-off shaft 151 has its center aligned with the rotation axis G<b>1 of the chain case 145 . That is, the chain case 145 is rotatably supported with respect to the conveyor 7 with the power take-off shaft 151 as a rotation axis. On the other hand, the rotation support arm 146 is rotatably supported with respect to the right chain case 125 by a shaft support portion 146b having a rotation axis G1 as a rotation axis. As described above, the auxiliary conveying device 140 including the chain case 145, the rotating support arm 146, and the auxiliary conveying wheel 141 is vertically rotatable about the power take-off shaft 151 for taking out the power of the conveyor 7. ing.

The chain transmission mechanism 152, as shown in FIG. , and an endless chain 158 wound around these sprockets. In such a configuration, the drive sprocket 156 rotates integrally with the power take-off shaft 151 due to the rotation of the power take-off shaft 151 accompanying the rotation of the chain 126 on the left side of the conveyor 7 . , the drive shaft 142 rotates, and the auxiliary conveying wheel 141 rotates.

The auxiliary conveying foil 141 is provided so that the rotation locus of the auxiliary conveying foil 141 passes along the moving path of the bulb portion 2a from the soil removing device 27 to the conveyor 7. As shown in FIG. In other words, the auxiliary conveying foil 141 is provided so that the protruding portion 143b is brought into contact with the bulb portion 2a that is inherited from the third soil removal foil 110C to the conveyor 7. As shown in FIG.

Specifically, as shown in FIG. 11, in the side view of the auxiliary conveying wheel 141, the rotational trajectory H1 of the tip of the protrusion 143b coincides with the rotational trajectory A3 of the tip of the protrusion 116b of the third soil removing wheel 110C. It is provided at a position that touches or almost touches. In addition, the auxiliary conveying foil 141 is provided at a position where most of the front side overlaps the third soil removal foil 110C in the front-rear direction in a plan view. Further, the auxiliary conveying wheel 141 is provided at a position such that the locus of rotation H1 is slightly spaced from the locus of rotation B1 of the conveyor 7 when viewed from the side.

Similar to the second soil removal foil 110B, the auxiliary transport foil 141 alternately positions the projections 143b of the foil body 143 with respect to the projections 116b of the third soil removal foil 110C having nine foil bodies 116. As such, it has eight foil bodies 143 . In addition, in the auxiliary conveying wheel 141 , the plurality of foil bodies 143 have a common shape and size, and are provided in a common phase with respect to the rotational direction of the auxiliary conveying wheel 141 . The phases of the plurality of foil bodies 143 in the auxiliary transport foil 141 may be different.

In the configuration provided with the auxiliary conveying device 140 as described above, the bulb portion 2a inherited from the third soil removing foil 110C of the soil removing device 27 to the conveying starting end portion of the conveyor 7 is affected by the action of the projection portion 143b of the auxiliary conveying foil 141. By receiving the force, it is pushed rearward and guided to the conveyor 7 . When the bulb portion 2a is taken over by the conveyor 7, it is delivered to the conveyor 7 while being sandwiched between the third soil removal foil 110C and the auxiliary transport foil 141. As shown in FIG. Here, the bulb portion 2a on the comb-shaped guide 135 is also delivered to the conveyor 7 by the auxiliary conveying foil 141. As shown in FIG.

In addition, the auxiliary conveying wheel 141 is elastically supported by the left and right urging springs 147 and 148 with respect to the conveyor 7 via the chain case 145 and the rotating support arm 146, so that the auxiliary conveying wheel 141 automatically moves up and down. become. That is, when a relatively large bulb portion 2a is delivered to the conveyor 7, the auxiliary conveying foil 141 escapes and lifts up against the biasing force, and when a relatively small bulb portion 2a is delivered to the conveyor 7. , the auxiliary conveying wheel 141 is positioned on the lower side due to the urging force. Note that the foil body 143 of the auxiliary transport foil 141 is not limited to the star wheel shape as in the present embodiment, and may be, for example, a polygonal roller or the like having blade-like projecting pieces.

The soil dropping device 27 and the conveyor 7 having the above-described configurations are provided between the left and right crawler traveling devices 4 in the left-right direction. Here, the arrangement configuration of the left and right crawler traveling devices 4 provided in the vegetable harvester 1 will be described.

In the vegetable harvester 1 , the left and right crawler traveling devices 4 are provided within a width range of the drawing and conveying device 24 in the left-right direction. As described above, the lateral widths of the three sets of drawing and conveying devices 24 gradually widen from the rear side to the front side. In such a configuration, the maximum width in the left-right direction of the three sets of drawing and conveying devices 24 is the left end of the front end of the upstream clamping and conveying device 81 of the left drawing and conveying device 24 and the upstream side of the right drawing and conveying device 24 . The width is P1 between the right end of the front end portion of the clamping and conveying device 81 (see FIG. 4).

The left and right crawler traveling devices 4 are arranged within the range of the width P1 for such three sets of drawing and conveying devices 24 . That is, in the left-right direction, the left outer edge (see position Q1) of the left crawler traveling device 4 is located left and right inside (right side) of the left edge that defines the width P1 for the three sets of drawing and conveying devices 24. ing. In the left-right direction, the right outer edge (see position Q2) of the right crawler traveling device 4 is located left and right inside (left side) of the right edge defining the width P1 of the three sets of drawing and conveying devices 24. ing. Therefore, as shown in FIG. 4, the width P2 of the left and right crawler traveling devices 4 in the left and right direction is within the range of the width P1 of the three sets of pull-out conveying devices 24 .

In such a configuration, the pair of left and right crawler traveling devices 4 are positioned within the harvesting range of the onions 2 by the drawing and conveying device 24 in the machine body width direction (horizontal direction). As shown in FIG. 4, in the vegetable harvester 1, the harvesting range of the onions 2 is the left side portion of the weeding case 51 of the leftmost weeding device 21 and the weeding case 51 of the rightmost weeding device 21 in the horizontal direction. 51 (harvest width R1). That is, the lateral width P2 of the left and right crawler traveling devices 4 is within the range of the harvest width R1 corresponding to the harvest range of the onions 2 in the lateral direction.

In particular, in this embodiment, the width P1 for the three sets of drawing and conveying devices 24 is within the range of the harvesting width R1, and the width P1 for the three sets of drawing and conveying devices 24 is within the range of the left and right crawlers. The width P2 of the traveling device 4 in the left-right direction is accommodated. The harvest width R1 substantially matches the excavation width of the excavation device 23 .

The vegetable harvester 1 having the arrangement of the crawler traveling device 4 as described above is provided with a fall guide device 160 that guides the bulb portion 2 a falling from the foliage cutting device 26 to the soil removal device 27 . The fall guide device 160 is a device for guiding the bulb portion 2a, which is cut off by the foliage cutting device 26 at a position outside the range of the width of the soil removal device 27 in the lateral direction, to the soil removal device 27 and falls.

In the vegetable harvester 1, the cutting position of the foliage portion 2b by the foliage cutting device 26 constituting the conveying/cutting unit configuration 80 on both the left and right sides is laterally outside the width range of the soil removal device 27 in the lateral direction. position.

Specifically, as shown in FIG. 9, the soil removal device width T0, which is the width of the soil removal device 27, is defined by the left side surface of the left side of the soil removal frame 111 and the left and right sides of the right side of the soil removal frame 111. Specifically, as shown in FIG. It is the width between the outer right side. The soil removing device width T0 is the same as or substantially the same as the device width of the conveyor 7 . Further, in the left and right conveying/cutting unit configuration 80, the cutting position of the foliage portion 2b by the foliage cutting device 26 in the left-right direction is the holding position of the foliage portion 2b by the shoulder aligning device 25, and the overlapping portion of the left and right rotary blades 100. position.

In the horizontal direction, the cutting position U1 of the foliage portion 2b by the left foliage cutting device 26 (right side in FIG. 9) is located laterally outside (left side) of the left end position T1 of the soil removal device width T0. Similarly, in the left-right direction, the cutting position U2 of the foliage portion 2b by the foliage cutting device 26 on the right side (left side in FIG. 9) is positioned laterally outside (right side) of the right end position T2 of the soil removing device width T0. . The width between the left cutting position U1 and the right cutting position U2 is the crop drop position width U0.

In this way, in the configuration in which the cutting positions U1 and U2 of the stem and leaf portions 2b are positioned on the left and right outside of the soil removal device width T0, the bulb portions 2a that fall directly downward from the cutting positions U1 and U2 are separated from the soil removal device 27. will not be accepted by Then, the drop guide device 160 guides the bulb portion 2a falling from the foliage cutting devices 26 on both the left and right sides to the soil dropping device 27. As shown in FIG.

Therefore, the drop guide device 160 is provided for each of the left and right conveying/cutting unit configurations 80 . That is, the vegetable harvester 1 includes, as the drop guide device 160, a left drop guide device 160L that guides the bulb portion 2a falling from the foliage cutting device 26 constituting the left conveying/cutting unit configuration 80 to the soil removal device 27. , and a drop guide device 160R on the right side that guides the bulb portion 2a falling from the foliage cutting device 26 constituting the right conveying and cutting unit configuration 80 to the soil removal device 27.

As shown in FIGS. 9 and 10, the fall guide device 160 has a guide member 161 as a device main body forming a guide surface for the bulb portion 2a. The guide member 161 has a slope that descends from the left and right outside to the left and right inside so as to receive the bulb portion 2a that has fallen from the lower side of the left and right foliage cutting devices 26 and guide it to the soil removal device 27 located in the left and right intermediate portion. It is provided in a slanted shape.

The guide member 161 includes a guide surface portion 162 forming an inclined guide surface 162a, a rear wall portion 163 provided along the rear edge portion of the guide surface portion 162, and along the left and right outer edge portions of the guide surface portion 162. and a side wall portion 164 provided at the bottom.

A guide surface 162a, which is an upper surface of the guide surface portion 162, is an inclined surface extending from the upper side to the lower side toward the left and right outer sides to the left and right inner sides when viewed from the front. In other words, the guide surface portion 162 is provided as a portion forming a downwardly inclined slope from the left and right outer sides toward the left and right inner sides.

The guide surface portion 162 is provided so that the left and right outer edges, that is, the upper edge portions thereof are located left and right outer than the cutting positions U1 and U2 of the foliage portion 2b by the foliage cutting device 26 in the left and right direction. Here, the guide surface portion 162 is provided so that the left and right outer edges are located outside the cutting positions U1 and U2 by the diameter of the bulb portion 2a of a typical onion 2, for example. As a result, the stems and leaves 2b are cut by the stems and leaves cutting device 26, and the bulbs 2a falling from a position near the transfer end portion of the shoulder aligning device 25 fall onto the guide surface portion 162. FIG.

In addition, the guide surface portion 162 has a length in the front-rear direction that covers a range that receives the bulb portion 2a that falls when the stem and leaf portion 2b is cut by the stem and leaf cutting device 26 . The guide surface portion 162 has a length extending in the front-rear direction over a range including the rotation base portion 116a of the foil main body 116 of each of the first soil removing foil 110A and the second soil removing foil 110B.

The rear wall portion 163 is a vertical surface portion that rises vertically from the rear edge portion of the guide surface portion 162 and is formed over the entire rear edge portion of the guide surface portion 162 in the left-right direction. The rear wall portion 163 restricts the bulb portion 2a from falling rearward from the guide surface portion 162 .

The side wall portion 164 is a vertical surface portion that rises vertically from the left and right outer edges of the guide surface portion 162 , and is formed over the entire range of the left and right outer edge portions of the guide surface portion 162 in the front-rear direction. The rear side of the side wall portion 164 is connected to the left and right outer sides of the rear wall portion 163 . The side wall portion 164 restricts the bulb portion 2a from falling from the guide surface portion 162 to the left and right outer sides.

The lower ends of the guide members 161 are positioned on the left and right inner sides of the left and right landscaping frames 111, and are fixed and supported on the landscaping frames 111 by fasteners such as bolts. On the other hand, the upper side of the guide member 161 is connected and supported via a support rod 165 to a predetermined frame portion constituting the working section frame 30 (see FIG. 10). A support plate portion (not shown) is provided on one end side of the support rod 165, and this support plate portion is fixedly supported from the outside to the side wall portion 164 of the guide member 161 by a fastener such as a bolt. A support plate portion 165a is provided on the other end side of the support rod 165, and the support plate portion 165a is attached to a predetermined frame portion constituting the working portion frame 30 via a fixing tool such as a bolt. fixedly supported.

According to the configuration provided with the left and right fall guide devices 160 as described above, as shown in FIG. , onto the left and right outer portions of the guide surface portion 162 of the guide member 161 (see arrow V1). The bulb portion 2a dropped onto the guide surface portion 162 slides down on the guide surface 162a due to its own weight due to the inclination of the guide surface portion 162, and flows into the soil removal device 27 (see FIGS. 9 and 10 and arrow V2).

The cutting position of the foliage portion 2b by the foliage cutting device 26 constituting the central conveying/cutting unit configuration 80 is located in the center portion of the soil removal device width T0 in the left-right direction. Therefore, the stems and leaves 2b that are cut by the central foliage cutting device 26 drop the bulbs 2a directly onto the soil removal device 27 (see arrow V3 in FIG. 9).

[Accommodation part]
The accommodation section 8 is provided on the rear side of the conveyor 7 . The housing portion 8 is provided on the rear side of the traveling body 3, on the right side of the operation portion 5, and in the intermediate portion in the left-right direction. The storage part 8 is configured to drop the bulb part 2a from the conveying end part of the conveyor 7 and store it in a harvesting net 170 as a collection container (see FIG. 5).

The storage part 8 has a discharge hopper 171 for receiving the bulb part 2a flowing down from the terminal end of the conveyor 7 . The discharge hopper 171 includes a hopper main body 173 forming a loading port 172 whose upper side is opened with an opening width that includes the entire conveying width of the conveyor 7 in the left-right direction, and a guide portion provided on the lower side of the hopper main body 173. 174. The discharge hopper 171 has a discharge port portion 175 which is an opening smaller than the input port portion 172 below the guide portion 174 .

The harvesting net 170 is a harvesting bag made of a net. The harvesting net 170 is attached to a discharge port 175 so as to communicate with the discharge hopper 171 with the open side facing upward.

Below the discharge hopper 171, a support base 176 is provided to support the harvesting net 170 attached to the discharge port 175 from below. The support table 176 has a horizontal support surface 176a. The support base 176 is provided so as to horizontally protrude rearward from the traveling body 3 via a support member. The support base 176 has a horizontal support surface portion 177 forming a support surface 176 a and side wall portions 178 provided on both left and right sides of the support surface portion 177 .

In the storage unit 8 having such a configuration, the bulb portion 2a that is transported rearward and upward by the conveyor 7 (see arrow W1 in FIG. 5) and drops rearward from the end of transport of the conveyor 7 (see arrow W2 in FIG. 5) ), is put into the discharge hopper 171 from the inlet portion 172 , passes through the discharge hopper 171 and is accommodated in the harvesting net 170 . The harvesting net 170 filled with the bulb portion 2a is appropriately replaced. As a collection container, instead of the harvesting net 170, a container may be placed on a support table 176, and the bulb portions 2a discharged from the discharge hopper 171 may be accommodated in the container.

[Power transmission configuration]
A power transmission configuration in the vegetable harvester 1 according to this embodiment will be described with reference to FIGS. 15 and 16. FIG. 16 is a partially enlarged view of FIG. 15, showing the power transmission configuration of the conveying/cutting unit configuration 80. As shown in FIG.

As shown in FIG. 15 , the rotational driving force of the output shaft 10 a of the engine 10 is input to the input shaft 200 a of the hydraulic pump 200 mounted near the engine 10 by the first chain transmission mechanism 201 .

Further, the rotational driving force of the output shaft 10a of the engine 10 is input by the second chain transmission mechanism 202 to the counter shaft 203 provided with the horizontal direction as the axial direction. The power of the engine 10 is divided into a travel drive system that drives the crawler travel device 4 and a work drive system that drives each work unit via the counter shaft 203 .

Regarding the traveling drive system, the rotational power of the counter shaft 203 is transmitted to the input shaft 11 a of the transmission 11 by the first belt transmission mechanism 205 . The first belt transmission mechanism 205 is provided with a travel clutch 206 operated by the travel/work clutch lever 13 . Rotational power input to the input shaft 11a of the transmission 11 is transmitted to the left and right axles 11b of the transmission 11 by the transmission mechanism of the transmission 11 . Drive wheels 4a of the crawler traveling device 4 are attached to both ends of the axle 11b.

Regarding the work drive system, the rotational power of the counter shaft 203 is input by the second belt transmission mechanism 207 to the work unit input shaft 208 provided with the horizontal direction as the axial direction. The second belt transmission mechanism 207 is provided with a work clutch 209 operated by the travel/work clutch lever 13 .

A third chain transmission mechanism 210 including an input sprocket 129 is provided between the left end of the working section input shaft 208 and the conveyor input shaft 127 . is transmitted to the conveyor input shaft 127 . The rotational driving force of the conveyor input shaft 127 is transmitted to the conveyor driven shaft 128 by the chain transmission mechanism including the left and right chains 126 to drive the conveyor 7 .

Rotational power of the conveyor driven shaft 128 is transmitted to the scraping drive shaft 115 of the third scraping wheel 110C by a chain transmission mechanism 211 including an input sprocket 118a. The rotational power of the drive shaft 115 of the third scraping wheel 110C is transmitted to the second scraping wheel 110B by a chain transmission mechanism including an output sprocket 118b, and the rotational power of the second scraping wheel 110B includes the output sprocket 119b. It is transmitted to the first scraping wheel 110A by the chain transmission mechanism. Further, the turning power of the chain 126 on the left side of the conveyor 7 is taken out by the power take-off shaft 151 and transmitted to the auxiliary transport wheel 141 by the chain transmission mechanism 152 .

On the other hand, the rotational power of the working part input shaft 208 is transmitted in the front-rear direction in plan view on the right side of the traveling body 3 via a bevel gear 215 fixed to the right end of the working part input shaft 208 and a bevel gear 216 meshing therewith. It is transmitted to the working part transmission shaft 217 arranged along. The rotational power of the working part transmission shaft 217 is transmitted to the working part input shaft arranged with the left-right direction of the machine body as its axial direction via a bevel gear 218 fixed to the front end of the working part transmission shaft 217 and a bevel gear 219 meshing therewith. 220.

As shown in FIG. 16, the rotational power of the working section input shaft 220 is applied to each conveying/cutting unit configuration via a worm gear 222 comprising a worm 223 provided on the working section input shaft 220 and a worm wheel 224 meshing with the worm gear 222. Of the left and right conveying input shafts 89 in 80, it is transmitted to the conveying input shaft 89A of the right belt holding member 24A. Rotational power of the conveying input shaft 89A is transmitted to the conveying input shaft 89B of the left belt clamping member 24A via a connecting shaft 225 arranged in the left-right direction. Both ends of the connecting shaft 225 are provided with bevel gears 227 that mesh with bevel gears 226 fixed to the transfer input shafts 89A and 89B, respectively.

The drawing and conveying device 24, the shoulder aligning device 25, and the foliage cutting device 26 are driven by the rotational power of the respective conveying input shafts 89 of the left and right belt clamping bodies 24A. The connecting shaft 225 and the bevel gears 226 and 227 are housed in a connecting shaft case 228 that extends between the lower end portions of the left and right transfer input shaft cases 90 (see FIG. 7).

The rotational power of the working part input shaft 220 is transmitted to the excavating drive shaft 78 by a fourth chain transmission mechanism 230 including a sprocket 229 fixed to the right end of the working part input shaft 220 . The excavating device 23 is driven by the rotational power of the excavating drive shaft 78 . The rotational power of the excavating drive shaft 78 is transmitted to the pretreatment drive shaft 55 by a fifth chain transmission mechanism 232 including a sprocket 231 fixed to the right end of the excavating drive shaft 78 . The rotational power of the pretreatment drive shaft 55 drives the weed dividing device 21 and the lifting device 22 for 6 rows.

[Foliage discharge configuration]
The vegetable harvester 1 has a foliage discharging structure for discharging the foliage 2b cut off from the bulb 2a by the foliage cutting device 26 to a predetermined location. The vegetable harvesting machine 1 has two types of configuration: one for discharging the stems and leaves 2b generated by the conveying and cutting unit construction 80 on both left and right sides, and the other for discharging the stems and leaves 2b generated by the central conveying and cutting unit construction 80. It has a foliar ejection configuration.

As shown in FIG. 17, the vegetable harvester 1 includes, as the drawing and conveying devices 24, an outer drawing and conveying device 24X positioned on the left and right outer sides and a central inner drawing and conveying device 24Y positioned on the left and right middle portion. Then, the vegetable harvester 1 serves as a leaf discharging device for discharging the stems and leaves 2b cut by the stems and leaves cutting device 26 in each of the conveying and cutting unit configurations 80 to the left and right outer sides, and cuts from the onion 2 transported by the outer drawing transporting device 24X. The stems and leaves 2b cut from the onions 2 transported by the release guide device 240, which is the first leaf ejection device for discharging the cut stems and leaves 2b, and the inner drawing and transporting device 24Y are discharged to the right side, which is one of the left and right sides. and a leaf removal conveying device 250, which is a second leaf removal device.

As shown in FIGS. 7 and 18, the ejection guide device 240 is provided at the end of the transport of the outer pull-out transport device 24X, that is, at the rear end of the downstream clamping transport device 82. As shown in FIGS. The discharge guide device 240 has a pair of upper and lower discharge guide bodies 241 and a discharge foil 242 . Out of the left and right downstream belt clamping bodies 82A constituting the downstream clamping and conveying device 82, the discharge guide device 240 is provided mainly at the rear end portion of the downstream belt clamping bodies 82A located on the left and right outer sides. . The ejection guide device 240 provided for the left outer drawing-out conveying device 24X and the ejection guide device 240 provided for the right outer drawing-out conveying device 24X are bilaterally symmetrical.

The discharge guide body 241 is composed of a rod-shaped member having a predetermined curved shape. The discharge guide body 241 has an arc-shaped curved shape along the outer shape of the drive pulley 87 positioned at the rear end of the downstream belt clamping body 82A on the left and right outer sides. The discharge guide body 241 is a flat surface perpendicular to the axial direction of the transport input shaft 89 that supports the drive pulley 87 below the drive pulley 87 positioned at the rear end of the left and right outer downstream belt clamping body 82A. It is provided so as to follow the majority of the

The left and right inner end portions of the discharge guide member 241 extend forward between the left and right downstream belt clamping members 82A, and extend forward from the left and right inner downstream belt clamping members 82A at positions below the driving pulleys 87 of the left and right inner downstream belt clamping members 82A. It is fixedly supported by fasteners such as bolts via a support plate 243 and the like to a predetermined frame portion constituting the downstream belt holding member 82A (see FIG. 7). The release guide member 241 wraps around the left and right outer sides of the downstream belt clamping member 82A along the rotational direction of the conveying belt 86 of the left and right outer downstream belt clamping members 82A from the portion fixed to the left and right inner downstream belt clamping members 82A. A circular arc-shaped portion along the outer shape is extended, and the ends are directed outward to the left and right.

That is, when viewed in the axial direction of the conveying input shaft 89 , the discharge guide body 241 passes from the base end portion fixed by the support plate 243 to between the left and right drive pulleys 87 , 87 , and extends around the outer left and right drive pulleys 87 . It wraps around the rear side of the downstream belt clamping body 82A so as to follow the circumferential shape, and its leading end is positioned on the left and right outside of the rear end of the downstream belt clamping body 82A.

The discharge guide body 241 is positioned on the outer peripheral side of the transport belt 86 so as to surround the rear ends of the downstream belt clamping bodies 82A on the left and right outer sides from the outside when viewed in the axial direction of the transport input shaft 89 . The upper and lower discharge guide bodies 241 have the same curved shape so as to overlap each other when viewed in the axial direction of the transport input shaft 89, and are supported in a fixed state at positions separated by a predetermined distance in the axial direction of the transport input shaft 89. there is

The discharge foil 242 is provided between the upper and lower discharge guide bodies 241 in the axial direction of the conveying input shaft 89 below the left and right outer downstream belt clamping bodies 82A. The discharge wheel 242 is positioned coaxially with the conveying input shaft 89 of the left and right outer downstream belt clamping bodies 82A, and rotates in the same direction in conjunction with the driving pulleys 87 of the left and right outer downstream belt clamping bodies 82A. is provided in

The release foil 242 has a plurality of projecting portions 242a protruding radially outward as portions to act on the foliage portion 2b, and has a so-called star foil shape. More specifically, the tips of the protrusions 242a are slightly curved so that the trajectory of the tips of the protrusions 242a due to the rotation of the ejection foil 242 substantially coincides with the arc-shaped curved portion of the ejection guide body 241. is provided so as to protrude from the discharge guide body 241 .

According to the discharge guide device 240 having the above configuration, the foliage portion 2b cut by the foliage cutting device 26 and clamped by the downstream clamping and conveying device 82 is placed at the proximal ends of the upper and lower release guide bodies 241. It is guided to the inner peripheral side of the discharge guide body 241 from the part side. The stem and leaf portion 2b guided to the inner peripheral side of the release guide body 241 moves along the curved shape of the release guide body 241 due to the action of the release foil 242, and the left and right outer ends of the release guide body 241 and the release foil 242 toward the left and right outside (see FIGS. 4 and 9 and arrow J1).

The discharged leaf conveying device 250 is provided behind the inner drawing conveying device 24Y. The leaf discharge conveying device 250 is configured as a belt conveying section, and has a pair of endless leaf discharge belts 251 rotating backward on sides facing each other. The leaf discharge belt 251 is wound around a driving pulley 252 provided at the conveying start end of the leaf discharge conveying device 250 and a driven pulley 253 provided at the conveying end portion of the leaf discharge conveying device 250 (see FIG. 9). ). As described above, the discharged leaf conveying device 250 is provided with a pair of right and left belt clamping members 250A in which the leaf discharging belt 251 is wound around the drive pulley 252 and the driven pulley 253, and the stem and leaf portion 2b is clamped between the left and right belt clamping members 250A. It is configured to be transported by A plurality of tension pulleys and the like are provided for the leaf ejection belt 251 .

The drive pulley 252 is provided with respect to the transport input shaft 89, and rotates together with the drive pulley 87 of the downstream clamping transport device 82 as the transport input shaft 89 rotates (see FIG. 15). The drive pulley 252 is provided below the drive pulley 87 . In other words, the leaf discharge conveying device 250 has its conveying start end located below the conveying end portion of the inner drawing conveying device 24Y. Therefore, the leaf discharge conveying device 250 positions the front ends of the left and right belt clamping members 250A below the rear end portions of the left and right downstream belt clamping members 82A of the inner drawing conveying device 24Y.

The leaf discharge conveying device 250 is provided in an inclined shape so that the conveying direction of the foliage portion 2b is oriented obliquely upward to the rear right from the conveying end portion of the inner drawing conveying device 24Y. In the side view of the leaf removal conveying device 250, the inclination angle of the extension direction, which is the conveying direction of the foliage portion 2b, with respect to the horizontal direction is approximately the same as the inclination angle of the pull-out conveying device 24. FIG. In addition, the leaf removal conveying device 250 is provided in an inclined shape so that the conveying direction of the foliage portion 2b is directed obliquely rearward to the right from the conveying end portion of the inner drawing conveying device 24Y in a plan view.

According to the leaf removal conveying device 250 having the configuration described above, the leaf removal conveying device 250 takes over the foliage portion 2b that has been cut by the foliage cutting device 26 and clamped by the downstream clamping and conveying device 82. , and conveyed obliquely upward to the rear right while being sandwiched between a pair of left and right leaf discharge belts 251 . The stems and leaves 2b conveyed by the leaf removal conveying device 250 are discharged at the terminal end of the leaf removal conveying device 250 (see FIGS. 4 and 9 and arrow J2).

As described above, the stems and leaves 2b are released by the release guide devices 240 provided for the left and right outer drawing and conveying devices 24X, and the leaves are released by the leaf removal and conveying device 250 provided for the central inner drawing and conveying device 24Y. The stems and leaves 2b are guided so as to drop onto the crawler traveling device 4 by the leaf discharge chute provided in the vegetable harvester 1, respectively. The vegetable harvester 1 has left and right guide portions as guide portions for guiding the foliage portions 2b discharged from the left and right discharge guide devices 240 and the central discharged leaf conveying device 250 toward the upper surfaces 4e of the left and right crawler traveling devices 4, respectively. side leaf ejection shooters 261 (261L, 261R) and a rear leaf ejection shooter 263.

The left side shooter 261L guides the stem and leaf part 2b released from the left release guide device 240 so as to drop onto the left crawler travel device 4. As shown in FIG. The right side shooter 261R guides the foliage 2b discharged from the right discharge guide device 240 so as to drop onto the right crawler travel device 4. As shown in FIG. The left and right lateral leaf ejection chutes 261 are configured substantially symmetrically.

The lateral leaf discharge chute 261 pushes the foliage portion 2b discharged laterally outward from the rear end portion of the laterally outer downstream nipping and conveying device 82 by the discharge guide device 240 to a position laterally outer than the crawler travel device 4. Then, the foliage portion 2b is dropped toward the left and right inner sides so that the foliage portion 2b rides on the crawler traveling device 4. - 特許庁The lateral leaf ejection chute 261 is a gutter-shaped portion that is open on the left and right inner sides and has a substantially U-shape or substantially U-shape in plan view.

The lateral leaf discharge chute 261 includes a vertical side surface portion 265 whose plate thickness direction is the horizontal direction, a lower guide surface portion 266 continuous to the lower side of the side surface portion 265, and an upper guide surface portion continuous to the upper side of the side surface portion 265. 267, and a front surface portion 268 and a rear surface portion 269 whose plate thickness direction is the front-rear direction.

The lower guide surface portion 266 is an inclined surface portion that extends from the left and right outer sides to the left and right inner sides from the upper side to the lower side when viewed from the front. That is, the lower guide surface portion 266 is provided as a portion forming a slope that slopes downward from the left and right outer sides toward the left and right inner sides. The upper guide surface portion 267 is a surface portion inclined in the same direction as the lower guide surface portion 266 .

The lateral leaf ejection chute 261 is provided so that the side surface portion 265 mainly covers the range for receiving the stem and leaf portion 2b ejected toward the left and right outside by the ejection guide device 240 . The lateral leaf discharge chute 261 is provided so as to be positioned in the middle of the front half of the crawler traveling device 4 in the front-rear direction. Further, the lateral leaf ejection chute 261 has a lower edge located above the portion of the crawler traveling device 4 located below the lateral leaf ejection chute 261 . In addition, the side discharge chute 261 has its upper edge located at a height near the release guide device 240 .

The front surface portion 268 is formed toward the left and right inwards from a range covering substantially the entire front edge portions of the side surface portion 265 and the lower guide surface portion 266 . The forward scattering of the foliage portion 2b is restricted by the front portion 268 . The rear surface portion 269 is formed from the rear edge portion of the lower guide surface portion 266 toward the left and right inner sides. The rear surface portion 269 restricts the rearward scattering of the foliage portion 2b.

The lateral leaf ejection shooters 261 are positioned inside the left and right sides of the lower frame portion 31c that constitutes the working portion frame 30, and are provided in a state of being fixed to the lower frame portion 31c. The lateral leaf discharge chute 261 has the side surface portion 265 and the lower guide surface portion 266 fixed to the lower frame portion 31c by fasteners such as bolts via support members 270a and 270b, respectively (see FIG. 17). .

Further, guide plates 271 for the foliage portion 2b discharged from the discharge guide device 240 are provided at positions behind the discharge guide device 240 and on the left and right inner sides of the rear portions of the left and right lateral leaf discharge chutes 261, respectively. . The left and right guide plates 271 are configured substantially symmetrically. The guide plate 271 is in the shape of a bent plate having an inclined surface portion 272 that slopes forward downward, an upper vertical surface portion 273 that continues to the upper side of the inclined surface portion 272, and a lower vertical surface portion 274 that continues to the lower side of the inclined surface portion 272. is a member of

The inclined surface portion 272 is inclined so as to be parallel to the downstream clamping and conveying device 82 when viewed from the side. It covers the lower rear side of the discharge guide device 240 in a range extending from the rear side of the rear end portion of the conveying device 82 to the left and right outer sides. The upper vertical surface portion 273 is a vertical plate-like portion whose plate thickness direction is the front-rear direction, and extends to a position higher than the conveying end portion of the downstream clamping conveying device 82 . The lower vertical surface portion 274 is a vertical plate-like portion whose plate thickness direction is the front-rear direction. , on the left and right inner sides of the rear surface portion 269 .

According to the configuration including the side leaf ejection shooter 261 and the guide plate 271 as described above, the space portion surrounded by the side leaf ejection shooter 261 and the guide plate 271 is the stem and leaf portion released from the ejection guide device 240. 2b discharge route. That is, the foliage portion 2b discharged from the discharge guide device 240 is thrown into the space surrounded by the lateral leaf ejection shooter 261 and the guide plate 271, and slides down while being guided by the lateral leaf ejection shooter 261. It falls on the upper surface 4 e of the crawler traveling device 4 . The upper surface 4e of the crawler traveling device 4 is the upper surface of the portion of the crawler belt 4d that slopes forward downward between the driving wheel 4a and the driven wheel 4b on the front side.

The stems and leaves 2b that have fallen onto the upper surface 4e of the crawler traveling device 4 are sent forward by the front-downward inclination of the upper surface 4e or the rotation of the crawler belt 4d in the crawler traveling device 4 that travels in the field. 4, and is stepped on by the crawler traveling device 4 as the vegetable harvester 1 advances.

The rear leaf discharge chute 263 pushes the foliage portion 2b discharged obliquely upward and rearward from the rear end portion of the central downstream nipping and conveying device 82 by the leaf discharge conveying device 250 to the left and right of the crawler traveling device 4 on the right side. The foliage portion 2b is received at the inside (left side) position, and the foliage portion 2b is guided to the left and right outside so that the foliage portion 2b rides on the crawler traveling device 4 on the right side and is dropped.

The rear leaf ejection chute 263 includes a guide surface portion 275 that slopes downward toward the right side, and a lower vertical surface portion 276 that continues to the lower side of the guide surface portion 275 (see FIG. 17).

The guide surface portion 275 is an inclined surface portion extending from the left and right inner sides to the left and right outer sides from the upper side to the lower side in a front view. That is, the guide surface portion 275 is provided as a portion that forms a slope that slopes down from the left and right inner sides toward the left and right outer sides.

The guide surface portion 275 has a substantially rectangular outer shape, the inner portion in the left-right direction is positioned above the right portion of the conveyor 7, and the range for receiving the foliage portion 2b discharged from the discharged leaf conveying device 250 is defined as the guide surface portion 275. provided to cover. The discharge position of the foliage portion 2b of the leaf removal conveying device 250 is located at substantially the same position as the right end of the conveyor 7 in the left-right direction, and the guide surface portion 275 guides the foliage portion 2b discharged from the leaf removal conveying device 250. , is received at a position above the right side of the conveyor 7 and guided downward to the lower right to drop.

The guide surface portion 275 has a relatively low side wall portion 277 formed along its outer edge. The side wall portion 277 is formed on the edge portion of the guide surface portion 275 other than the lower edge portion so as to rise toward the upper surface side (receiving surface side) of the guide surface portion 275 . The guide surface portion 275 is configured as a tray-shaped guide plate by having a side wall portion 277 . The side wall portion 277 prevents the foliage portion 2 b received by the guide surface portion 275 from scattering around the guide surface portion 275 .

The lower vertical surface portion 276 is a vertically substantially rectangular plate-like portion whose plate thickness direction is the left-right direction, and is connected to the lower side of the guide surface portion 275 . The lower vertical surface portion 276 has substantially the same width as the lower edge of the guide surface portion 275 in the front-rear direction.

The rear leaf discharge chute 263 is provided so that the lower front edge of the guide surface portion 275 is connected to the left and right inner (left) edges of the right guide plate 271 . The rear leaf ejection chute 263 has the front portion of the guide surface portion 275 positioned rearwardly and downwardly of the transportation rear end portion of the leaf ejection conveying device 250 .

The rear leaf ejection chute 263 is attached to the lower frame portion of the rear end of the leaf ejection conveying device 250 via a support stay 278 attached to a recessed notch 275s formed in the front portion of the guide surface portion 275. It is fixed and supported by fixing tools such as bolts. In addition, the rear leaf discharge chute 263 has the lower end of the lower vertical surface portion 276 fixedly supported by a predetermined frame constituting the machine body frame 9 with fasteners such as bolts.

A guide plate 281 for the foliage portion 2b guided by the rear leaf ejection shooter 263 is provided at the right position of the rear leaf ejection shooter 263 . The guide plate 281 includes a main body surface portion 282 which is a vertical substantially rectangular plate-shaped portion whose plate thickness direction is the left-right direction, and an upper inclined surface portion 283 continuous to the upper side of the main body surface portion 282 ( See Figure 17).

The body surface portion 282 is provided on the right side of the rear leaf ejection chute 263 so as to face the lower end portion and the lower vertical surface portion 276 of the guide surface portion 275 of the rear leaf ejection chute 263 . The upper inclined surface portion 283 is inclined at an inclination angle substantially symmetrical to the inclination of the rear leaf discharge chute 263 .

The guide plate 281 is provided in a fixed state by fixing the main body surface portion 282 to the left and right inner sides of a quadrangular prism-shaped shaft case 285 provided extending in the front-rear direction on the right side of the conveyor 7 . The shaft case 285 extends in the front-rear direction in front of the gear case 286 provided on the right side of the rear end of the conveyor 7, and houses the working part transmission shaft 217 (see FIG. 15). .

According to the configuration including the rear leaf ejection chute 263 and the guide plate 281 as described above, the space above the guide surface portion 275 and the space sandwiched between the rear leaf ejection chute 263 and the guide plate 281 can be This serves as a discharge route for the foliage portion 2b discharged from the conveying device 250. As shown in FIG. In other words, the stem and leaf portion 2b released from the leaf removal conveying device 250 is received on the guide surface portion 275, and slides down while being guided by the guide surface portion 275. The space between the rear leaf removal chute 263 and the guide plate 281 , and drops onto the upper surface of the crawler traveling device 4 on the right side.

The foliage 2b that has fallen onto the upper surface 4e of the crawler traveling device 4 is sent forward by the rotation of the crawler belt 4d in the crawler traveling device 4 that travels in the field, and falls to the front side of the crawler traveling device 4, whereupon the vegetable harvester 1 It will be stepped on by the crawler traveling device 4 as it advances.

[Auxiliary operation part]
In the vegetable harvester 1 , in addition to the operation section 5 provided at the rear of the traveling machine body 3 , an auxiliary operating section 300 for operating the vegetable harvesting machine 1 is provided on the left side of the traveling machine body 3 . Here, regarding the arrangement of the auxiliary operation unit 300 with respect to the traveling body 3, when the right side, which is the discharge side of the stem and leaf part 2b by the leaf removal conveying device 250 with respect to the traveling body 3, is defined as one left and right side, the auxiliary operation part 300 with respect to the traveling body 3 The left side, which is the side on which the is arranged, is the other left and right side. The auxiliary operation unit 300 serves as an operation unit mainly used for operating the pull-out conveying device 24 and the like during the harvesting operation of the onions 2 by the vegetable harvester 1 .

The auxiliary operation unit 300 is provided on the left side opposite to the discharge side of the foliage conveying device 250 in the left-right direction. That is, in a configuration in which the leaf removal conveying device 250 that receives the foliage portion 2b from the central inner pull-out conveying device 24Y is provided so as to convey and discharge the foliage portion 2b to the right side of the left and right sides, the auxiliary operation portion 300 is configured to move. It is provided on the left side of the machine body 3, which is the side opposite to the discharge side of the foliage portion 2b by the leaf removal conveying device 250 in the left-right direction. The auxiliary operation unit 300 is provided above the left crawler travel device 4 located on the left side opposite to the discharge side of the stems and leaves 2b by the leaf removal conveying device 250 in the left-right direction.

The auxiliary operation unit 300 has a rectangular parallelepiped operation box 301 in which various operation tools such as levers and switches are arranged. The operation box 301 is provided with an elevating lever 302 for elevating the working unit, left and right side clutch levers 303, and an engine stop switch 304 for stopping the engine 10. FIG.

The operation box 301 is provided substantially in the central portion of the traveling machine body 3 in the front-rear direction, and is positioned on the left side of the discharged leaf conveying device 250 . The operation box 301 is provided at a position higher than the upper end of the discharged leaf conveying device 250 in the vertical direction.

The operation box 301 is provided on the left side of the traveling body 3 in the same manner as the operation box 12 of the operation unit 5 in the left-right direction, and positioned in front of the operation box 12 . Further, the operation box 301 is provided so that at least a portion thereof is positioned within the range of the width of the crawler belt 4d of the left crawler traveling device 4 in the left-right direction. In this embodiment, most of the operation box 301 is located within the width of the crawler belt 4d in the left-right direction.

The auxiliary operation unit 300 has a boarding step 311 behind the operation box 301 in the front-rear direction, on which the operator 310 who operates the operation box 301 stands (see FIG. 3). An operator 310 standing on the boarding step 311 operates the operation box 301 . The boarding step 311 is horizontally provided toward the left from the body frame 9 while being supported and fixed to the body frame 9 . Most of the boarding step 311 is a mesh portion.

The boarding step 311 is provided at a height position such that the operation box 301 is positioned at the height of the abdomen of the worker 310 when the worker 310 of average height stands on the boarding step 311 . ing. The boarding step 311 is positioned slightly higher than the height of the upper end of the crawler traveling device 4 .

The boarding step 311 has a substantially right half positioned above the left crawler traveling device 4 in plan view. The boarding step 311 is provided above the rear portion of the crawler traveling device 4 and to the left of the lower portion of the conveyor 7 in the front-rear direction. An auxiliary step 312 for getting on and off the boarding step 311 is provided below the left side of the boarding step 311 on the boarding/alighting side.

A front frame 313 and a rear frame 314 are erected in front of and behind the step 311 for boarding. The front frame 313 and the rear frame 314 each have left and right struts and upper sides as portions formed by rod-shaped members. The front frame 313 and the rear frame 314 function as handrails when getting on and off the boarding step 311, and are portions held by the worker 310 on the boarding step 311 during work.

The upper portion of the front frame 313 is bent forward, and a front support base 315 is horizontally provided forward from the upper end of the front frame 313 . An operation box 301 is mounted on the front support table 315 . The front support base 315 is supported by a support frame portion 316 that extends forward and upward from the upper portion of the front frame 313 via support members and the like. An accelerator lever 317 is provided on the left side of the front support base 315 on the upper side of the front frame 313 .

A rear support base 318 is horizontally provided rearward from the upper and lower central portions of the rear frame 314 . The operation box 12 of the operation unit 5 is mounted on the rear support base 318 . Linear or plate-like support members are provided between the left and right struts of each frame of the front frame 313 and the rear frame 314 and between the right struts of the front and rear frames.

The operation of the vegetable harvester 1 having the configuration as described above will be described. A vegetable harvesting machine 1 harvests six rows of onions 2 while moving forward along a row planting line in a continuous row field. During the harvesting operation of the onions 2 by the vegetable harvester 1 , the machine is operated by the operation box 301 operated by the operator 310 riding on the boarding step 311 of the auxiliary operation unit 300 . The operation unit 5 at the rear part of the machine body is mainly used for operating the machine body when the vegetable harvester 1 is moving and running outside the field.

While moving forward, the vegetable harvester 1 first lifts up the stems and leaves 2b of the onion 2 lying down in the field by the dividing device 21, and divides the stems and leaves into rows by the raking device 22. The portion 2b is picked up and transferred to the drawing-out conveying device 24.例文帳に追加The raking devices 22 function as a pair, and each set rakes up two streaks of stems and leaves 2b. The vegetable harvester 1 loosens the soil under the onion 2 by the digging device 23 when the foliage portion 2b is transferred to the drawing and conveying device 24 by the raking device 22 .

As shown in FIG. 8, the pull-out conveying device 24 takes in two stems and leaves 2b at the leading end of the upstream pinching conveying device 81, and pinches and conveys them by the left and right conveying belts 83. As shown in FIG. Here, the conveying inlet height K1, which is the height of the tip of the upstream clamping and conveying device 81 with respect to the ground 320 of the field, needs to be a certain height. If the conveying entrance height K1 is low due to the relationship between the diameter of the driven pulley 85 and the pitch K2 between the rows of the onion 2, etc., the inclination of the foliage portion 2b becomes large, causing problems such as tearing of the foliage portion 2b. It becomes impossible to obtain good uptake properties for the foliage portion 2b.

The pulling-out conveying device 24 pulls out the onion 2 from the field while pinching the foliage portion 2b, and conveys it rearward and upward. In the pull-out conveying device 24, the onion 2 is handed over from the upstream pinching and conveying device 81 to the downstream pinching and conveying device 82, and as it is conveyed by the downstream pinching and conveying device 82, the height of the bulb portion 2a is adjusted by the shoulder aligning device 25. position is aligned. The stems and leaves 2b of the onions 2 whose height positions are aligned are cut by the stems and leaves cutting device 26 at a position where the stems and leaves 2b are left with a predetermined length from the bulbs 2a.

When the stem and leaf portion 2b is cut by the stem and leaf cutting device 26, the bulb portion 2a falls onto the soil removing device 27. - 特許庁Here, the bulb portions 2a falling from the shoulder aligning devices 25 in the left and right conveying/cutting unit structures 80 are guided by the guide members 161 and fall onto the soil dropping device 27, respectively. The bulb portion 2a dropped onto the soil removal device 27 is transported backward while being subjected to the soil removal action by the soil removal foil 110, and is sent to the conveyor 7 by the action of the auxiliary transportation device 140. is conveyed rearward and upward. The bulb portion 2a transported by the conveyor 7 is thrown into the discharge hopper 171 of the storage portion 8 from the transport end portion of the conveyor 7 and stored in the harvesting net 170. As shown in FIG. During the harvesting operation of the vegetable harvester 1, in addition to the operator who operates the auxiliary operation unit 300, an auxiliary operator who replaces the harvesting net 170 and the like follows behind the machine.

According to the vegetable harvester 1 according to the present embodiment having the configuration as described above, the following effects can be obtained.

According to the vegetable harvesting machine 1 according to the present embodiment, in the configuration in which the cut stems and leaves 2b are discharged onto the crawler traveling device 4, good harvesting workability can be obtained even in continuous row fields.

In the vegetable harvester 1, the left and right crawler traveling devices 4 are positioned within the width of the harvesting range of the onions 2 by the drawing and conveying device 24 (see harvest width R1 in FIG. 4) in the lateral direction, which is the width direction of the machine body. ing. According to such a configuration, in a continuous row field without ridges, regardless of the moving route of the machine for harvesting work, the unharvested row portion located on one left or right side of the machine body is moved by the crawler traveling device. Harvesting work can be done without stepping on it. Therefore, according to the vegetable harvester 1, the left and right crawler traveling devices 4 are positioned within the width of the harvesting range of the onion 2, and the foliage portion 2b is dropped onto these crawler traveling devices 4 and spread by the crawler traveling device 4. Since it is crowded, it is possible to perform intermediate harvesting in fields with continuous rows without ridges.

For example, in the case of an agricultural field with ridges, the ridge grooves, which are the grooves between the ridges, are the traveling portion of the crawler traveling device 4 and the discharge portion of the foliage portion 2b. In this respect, according to the vegetable harvesting machine 1, in a field of continuous row cropping without ridges and grooves, the foliage 2b discharged from the machine body to the left and right is spread by the crawler traveling device 4 positioned within the width of the harvesting range. will be trapped.

Therefore, as shown in FIG. 4, the foliage portion 2b is discharged onto the undigged crops on both left and right sides of the six rows of crops to be harvested, and the crawler traveling device 4 treads on the undigged crop regions. can be prevented. As a result, it is possible to eliminate the influence on the harvesting work in the next process, in which undigged crops are harvested. becomes possible.

By enabling intermediate harvesting, it is possible to improve the degree of freedom regarding the course (running route) of the harvesting work in the field. Harvesting workability can be obtained. In addition, by enabling intermediate harvesting, it becomes possible to easily perform partial harvesting in a field according to, for example, the state of growth of crops.

In addition, the vegetable harvester 1 is configured to include three sets of drawing and conveying devices 24 on both the left and right sides and in the center. A leaf removal conveying device 250 for discharging the foliage portion 2b from the drawing and conveying device 24 from one of the left and right sides is provided.

According to such a configuration, in a multi-row harvester such as the vegetable harvester 1, for example, the foliage portion 2b discharged from the central drawing-out conveying device 24 is provided in the left-right central portion of the machine body. Therefore, it is possible to discharge by a route avoiding the conveyor 7. As a result, in the multi-row harvester, the stem and leaf part 2b separated from the bulb part 2a by the drawing and conveying device 24 in the central part can be discharged onto either the left or right crawler traveling device 4, so that the next process can be performed. It is possible to eliminate the influence on the harvesting work and obtain good harvesting workability.

In addition, the vegetable harvester 1 has an operation unit 5 provided at the rear of the machine body on the left side opposite to the discharge side of the foliage portion 2b by the discharge conveying device 250 in the left-right direction.

According to such a configuration, since the discharge path of the foliage portion 2b from the drawing and conveying device 24 in the central portion and the arrangement position of the operation portion 5 are distributed to the left and right, the overall length of the body of the vegetable harvesting machine 1 can be shortened. It is possible to reduce the weight of the airframe. In addition, since the leaf discharge conveying device 250 extends in the left-right direction to the side opposite to the operation unit 5 side, it is possible to ensure good visibility of the conveyor 7 from the operator who operates the operation unit 5 . .

In addition, the vegetable harvester 1 includes an auxiliary operating section 300 provided in front of the operating section 5 on the left side opposite to the discharge side of the foliage portion 2b by the leaf removal conveying device 250 in the left-right direction.

According to such a configuration, during the harvesting operation, from the auxiliary operation unit 300, the pull-out state of the stem and leaf part 2b by the pull-out conveying device 24, the clamping position of the stem and leaf part 2b, and the cut length of the stem and leaf part 2b by the stem and leaf cutting device 26 , the flow condition of the discharged foliage portion 2b (presence or absence of clogging, etc.), the conveying state of the bulb portion 2a by the conveyor 7, and the like can be directly confirmed. While confirming the working state of each working section of the vegetable harvester 1, the auxiliary operation section 300 performs the traveling operation of the machine body, the adjustment of the vehicle speed, the digging depth (the height of the working section), and the like. Therefore, optimum operation becomes possible and good workability can be obtained.

Also, the auxiliary operation unit 300 is provided above the left crawler traveling device 4 . With such a configuration, it is possible to directly confirm the positional relationship between the onion 2 and the pulling-out conveying device 24 in the field. Obtainable. Here, regarding the positional relationship between the onion 2 and the pull-out conveying device 24 in the field, adjustment of row alignment, which is the positional relationship in the horizontal direction, and adjustment of the conveying inlet height K1 (see FIG. 8), which is the positional relationship in the vertical direction. is done.

In particular, in the present embodiment, the boarding step 311 on which the operator 310 rides is provided at a position higher than the crawler traveling device 4 in the auxiliary operating section 300 . Therefore, the worker 310 can obtain good visibility of the onion 2 planted in the field in front of the working unit and the front end of the working unit from a high position.

In addition, since the auxiliary operation unit 300 is operated by the worker 310 on the step 311 for boarding provided on the machine body frame 9, for example, when the vegetable harvester 1 is loaded and unloaded from a truck, and when it is moved between fields. During non-harvesting operations such as during harvesting, it is difficult to obtain stable operating conditions. On the other hand, the operation unit 5 at the rear part of the machine body is operated by an operator standing on the ground. Therefore, during non-harvesting operations such as loading and unloading of the vegetable harvester 1, safety can be ensured by using the operation unit 5. FIG.

In the vegetable harvester 1, left and right side discharge guides serve as guides for guiding the stem and leaf portions 2b discharged from the left and right discharge guide devices 240 and the central discharged leaf conveying device 250 onto the left and right crawler traveling devices 4, respectively. A leaf shooter 261 and a rear leaf ejector 263 are provided.

According to such a configuration, the foliage portion 2b can be reliably dropped onto the crawler traveling device 4, so that the foliage portion 2b can be reliably spread by the crawler traveling device 4. FIG. As a result, it is possible to effectively prevent the foliage portion 2b discharged to the right and left sides of the machine body from influencing the harvesting operation in the next step.

In addition, the structure in which the foliage portion 2b is discharged to both the left and right sides at the intermediate portion in the front-rear direction of the fuselage makes it possible to effectively utilize the space on both the left and right sides of the fuselage. Since the total length of the airframe can be shortened compared to the configuration in which the air is ejected through the air, the airframe can be configured compactly. Furthermore, the configuration in which the foliage portion 2b is ejected to both the left and right sides at the intermediate portion in the front-rear direction of the machine body makes it possible to provide the auxiliary operating section 300 at a position close to the front end of the machine body, thereby improving the visibility of the working section and the operation of the machine body. It is possible to easily improve the performance. In particular, by providing the auxiliary operation part 300 on the side opposite to the discharge side of the stem and leaf part 2b by the leaf removal conveying device 250, the auxiliary operation part 300 can be easily arranged on the front side, and the visibility and operability are effectively improved. can do.

The vegetable harvester 1 also includes a crawler traveling device 4 as a traveling device. According to such a configuration, since the foliage portion 2b falling onto the crawler traveling device 4 can be received on the upper surface 4e formed by the crawler belt 4d, the laying of the foliage portion 2b by the crawler traveling device 4 is stabilized. can be done.

According to the vegetable harvester 1 according to this embodiment, it is possible to obtain good soil removal performance and to make the machine body compact.

The vegetable harvester 1 includes a soil removal device 27 having three soil removal foils 110, and a conveyor 7 for receiving the bulb portion 2a from the soil removal device 27 and conveying it rearward and upward. In this way, by providing the conveyor 7 as a conveying device separately from the soil removal device 27, it is possible to realize a configuration that conveys the bulb portion 2a to the predetermined storage portion 8 while making the body compact. .

That is, by providing the conveyor 7 separately from the soil removal device 27 having the function of removing soil, it is possible to make the conveying direction of the conveyor 7 have a steep gradient to some extent, so that the height of the conveying destination of the bulb portion 2a can be increased. In addition, the length of the conveyor 7 in the front-rear direction can be shortened, and the machine body can be made compact.

Further, by arranging the soil removing device 27 and the conveyor 7 so as to form a continuous transport path, the soil removing device 27 and the conveyor 7 can be configured as one unit. This makes it possible to simplify the device configuration.

In addition, the soil removal device 27 includes two soil removal foils 110 (110A, 110B) on the upper side of the conveying side as the soil removal foils 110, and a third soil removal foil for transferring the bulb portion 2a from the soil removal device 27 to the conveyor 7. foil 110C.

According to such a configuration, the two soil removal foils 110 on the upper side of the transport can remove soil from the roots and the entire surface of the bulb portion 2a, and the third soil removal foil 110C has a soil removal action. The bulb portion 2a can be sent to the conveyor 7 while obtaining the As a result, the soil can be sufficiently removed, and the bulb part 2a can be transferred smoothly from the soil removal device 27 to the conveyor 7, and highly accurate harvesting with less damage and less soil adhesion can be realized. can.

In addition, in the soil removal device 27, the third soil removal foil 110C is provided at a position higher than the two soil removal foils 110 on the upper transport side. According to such a configuration, while enabling the smooth transfer of the bulb portion 2a from the soil removal device 27 to the conveyor 7, for example, compared to the configuration in which the three soil removal foils 110 are arranged at the same height position, the main In addition, the longitudinal direction of the airframe can be made compact.

A comb-shaped guide member 135 is provided between the soil dropping device 27 and the conveyor 7 . According to such a configuration, it is possible to prevent the bulb portion 2a from falling through a gap between the third soil removal foil 110C and the conveyor 7, for example, before and after the projecting bar 121A passes. In addition, since the bulb portion 2a is supported from below by the comb-shaped guide body 135 at the transfer portion from the soil removing device 27 to the conveyor 7, the bulb portion 2a is smoothly transferred to the conveyor 7 by the third soil removing foil 110C. inheritance becomes possible.

In the vegetable harvester 1, the soil removing device 27 and the conveyor 7 are provided between the left and right crawler traveling devices 4 in the left and right direction with respect to the left and right crawler traveling devices 4 arranged within the range of the harvest width R1. ing. According to such a configuration, it is possible to shorten the overall length and height of the airframe while making it possible to excavate the entire surface of the six rows, thereby realizing a compact airframe.

That is, when the soil removing device 27 and the conveyor 7 are arranged so as not to overlap with the crawler traveling device 4 in a side view, the arrangement positions of the soil removing device 27 and the conveyor 7 become higher, or these devices are placed on the front side or the rear side. As a result, the overall length and height of the aircraft become longer. Therefore, by using the space between the left and right crawler traveling devices 4 as a space for arranging the soil removal device 27 and the conveyor 7, the machine body can be made compact.

In addition, a fall guide device 160 is provided for the soil removal device 27 to guide the bulb portion 2a falling from the left and right shoulder aligning devices 25 to the soil removal device 27 . According to such a configuration, in the configuration in which the soil dropping device 27 having a wide harvesting width R1 and a narrower width than the harvesting width R1 is arranged between the left and right crawler traveling devices 4 arranged inside the harvesting width R1, It is possible to guide the bulb portion 2a that falls at a position on the left and right outside of the soil removing device 27 onto the soil removing device 27. - 特許庁

By providing the drop guide device 160, all the bulbs 2a of the dug up onions 2 can be dropped onto the soil removal device 27, so it is necessary to adjust the position of the soil removal device 27 according to the planting conditions. Therefore, the device configuration can be simplified, and good harvesting workability can be obtained. Also, by providing the drop guide device 160, the working width of the soil removal device 27 can be made narrower than the crop drop position, so the soil removal device 27 and the conveyor 7 can be made compact.

According to the vegetable harvesting machine 1 of the present embodiment, it is equipped with a pull-out conveying device 24 as a nipping conveying device that conveys the stems and leaves 2b of the onion 2 in a clamped state, and a foliage cutting device 26 that cuts the stems and leaves 2b. In this configuration, the driving mechanisms of the pull-out conveying device 24 and the foliage cutting device 26 can be simplified, and good harvesting workability can be obtained.

That is, in the vegetable harvester 1, the pull-out conveying device 24 is composed of two upper and lower stages by the upstream pinching and conveying device 81 and the downstream pinching and conveying device 82. A shoulder aligning device 25 is arranged toward the end of the conveying direction, and a foliage cutting device 26 is provided at the conveying end thereof. According to such a configuration, the following effects can be obtained.

First, according to the upper and lower two-stage configuration of the upstream pinching and conveying device 81 and the downstream pinching and conveying device 82, the length of the foliage portion 2b required for shoulder alignment (position alignment) by the shoulder aligning device 25 can be shortened. can.

By inheriting the foliage portion 2b from the upstream holding and conveying device 81 to the downstream holding and conveying device 82, the portion of the foliage portion 2b that is below the initial holding portion by the upstream holding and conveying device 81 is moved downstream. It will be clamped again by the side clamping and conveying device 82 . After the gripping position of the stem and leaf portion 2b is shifted downward by the downstream gripping and conveying device 82, the shoulder alignment of the onion 2 is performed by the shoulder alignment device 25. FIG.

For example, as shown in FIG. 6, instead of the downstream pinching and conveying device 82, an upstream pinching and conveying device 81 is installed rearward and upward by the conveying length of the downstream pinching and conveying device 82 (indicated by a two-dot chain line (see the transport line M1 shown). In the case of such a configuration, in order to receive the action of shoulder aligning up to the conveying end portion of the shoulder aligning device 25, in order to maintain the nipping state by the upstream nipping and conveying device 81, the stem and leaf portion 2b has a length of N1. Is required. In FIG. 6, the onion 2 positioned at the transport terminal end of the shoulder aligning device 25 is indicated by an onion 2X.

On the other hand, according to the upper and lower two-stage configuration of the upstream pinching and conveying device 81 and the downstream pinching and conveying device 82, the downstream pinching and conveying device 82 is provided in a stepped manner with respect to the upstream pinching and conveying device 81. Therefore, the length of the foliage portion 2b required to receive the action of shoulder aligning is shortened by the length ΔN by the amount that the gripping position of the foliage portion 2b is lowered at the position of the conveying end portion of the shoulder aligning device 25. can be done. That is, the length of the foliage portion 2b required for shoulder alignment can be set to the length N2, which is shorter than the length N1 by ΔN.

The fact that the length of the foliage portion 2b required for shoulder aligning can be shortened in this way means that the operating distance Z1 for shoulder aligning by the shoulder aligning device 25 can be reduced without changing the length of the foliage portion 2b required for shoulder aligning. can be lengthened. By increasing the working distance Z1 for shoulder alignment, the cutting length of the foliage portion 2b by the foliage cutting device 26 can be stabilized. Here, the working distance Z1 for shoulder alignment is the distance in the front-rear direction from the transport start end of the shoulder alignment device 25 to the transport end. In FIG. 6, the onion 2 positioned at the beginning of the transportation of the shoulder aligning device 25 is indicated by the onion 2Y.

Further, for example, as shown in FIG. 6, instead of the upstream clamping and transporting device 81, a downstream clamping and transporting device 82 is extended forward and downward by the transport length of the upstream clamping and transporting device 81 (two points). (see the transport line M2 indicated by the dashed line). In such a configuration, it becomes difficult to secure the transfer inlet height K1.

Therefore, according to the upper and lower two-stage configuration of the upstream pinching and conveying device 81 and the downstream pinching and conveying device 82, the height of the conveying entrance K1 (see FIG. 8) required for collecting two rows at the center and harvesting them at the same time is reduced. It is possible to lengthen the working distance Z1 for shoulder alignment while maintaining the clearance.

In addition, the vegetable harvester 1 is configured to extract driving force for the upstream nipping and conveying device 81 and the shoulder aligning device 25 from the support shaft 91 that supports the driven pulley 88 of the downstream nipping and conveying device 82 .

With such a configuration, the drive system for transmitting the power of the engine 10 to the pull-out conveying device 24 can be shared as the configuration for transmitting the power to the shoulder aligning device 25. There is no need to separately provide a configuration for driving the , and the configuration can be simplified. That is, the driving parts of the upstream pinching and conveying device 81 and the shoulder aligning device 25 can be concentrated on the driven side of the downstream pinching and conveying device 82, so that the drive system can be constructed simply, lightly, and inexpensively.

Further, in this embodiment, the rotary blades 100 of the foliage cutting device 26 are provided on the support shafts 96 a of the left and right driven pulleys 96 of the shoulder aligning device 25 . With such a configuration, there is no need to separately provide a configuration for driving the foliage cutting device 26, and the configuration of the drive system can be simplified.

In addition, the driven pulley 88 of the downstream pinching and conveying device 82 and the driving pulley 84 of the upstream pinching and conveying device 81 are provided on the same support shaft 91 as a distribution shaft. According to such a configuration, it is possible to transmit power from the downstream clamping and conveying device 82 to the upstream clamping and conveying device 81 with a simple configuration. This makes it possible to simplify the configuration of the driving portion that is concentrated on the driven side of the downstream side nipping and conveying device 82 .

The drive pulley 95 of the shoulder aligning device 25 is interlocked with a support shaft 91 that supports the driven pulley 88 of the downstream nipping and conveying device 82 , and is configured to receive a driving force input from the support shaft 91 . there is According to such a configuration, power can be transmitted from the downstream clamping and conveying device 82 to the shoulder aligning device 25 with a simple configuration. This makes it possible to simplify the configuration of the driving portion that is concentrated on the driven side of the downstream side nipping and conveying device 82 .

According to the vegetable harvester 1 according to the present embodiment, the auxiliary conveying device 140 is provided on the upper and rear sides of the soil removal device 27 to give the bulb portion 2a a feeding action to the conveyor 7. It is possible to obtain excellent soil removal performance and to make the body compact.

By providing the auxiliary conveying device 140, the auxiliary conveying foil 141 enables smooth transfer without causing stagnation or clogging of the bulb portion 2a at the transfer portion from the soil dropping device 27 to the conveyor 7. . As a result, it is no longer necessary to insert the beginning end of the conveyer 7 under the third soil removal foil 110C in order to transfer the bulb portion 2a from the soil removal device 27 to the conveyor 7, for example. and the conveyor 7 can be arranged so as not to overlap in plan view. Therefore, it is possible to reduce the size of the airframe without increasing the length of the device configuration in the vertical direction. In addition to the two soil removal foils 110, the auxiliary transport foil 141 can also provide the soil removal action, so that good soil removal performance can be obtained.

Further, the auxiliary conveying wheel 141 of the auxiliary conveying device 140 is provided so as to rotate counterclockwise in the direction in which the bulb portion 2a is conveyed rearward, that is, counterclockwise when viewed from the left side, by the action of the plurality of protrusions 143b. According to such a configuration, the auxiliary conveying foil 141 acts on the bulb portion 2a at the transfer portion to the conveyor 7 where the transportation state of the bulb portion 2a tends to be unstable, so that the soil removal device 27 is transferred from the conveyor. It is possible to stably feed the bulb portion 2a to 7.

Further, the auxiliary conveying wheel 141 is provided so as to be vertically rotatable with respect to the conveyor 7 about the rotation axis G1. According to such a configuration, the auxiliary conveying wheel 141 can be moved up and down according to the size of the bulb portion 2a to be conveyed and the amount of conveying. .

In particular, in this embodiment, the auxiliary conveying wheel 141 is elastically supported in a downwardly biased state by the left and right biasing springs 147 and 148 with respect to the rotational movement about the rotational axis G1. According to such a configuration, it is possible to obtain good operability for the up-and-down motion of the auxiliary transport wheel 141 according to the size of the bulb portion 2a to be transported and the transport amount. As a result, the conveying action of the auxiliary conveying wheels 141 can be effectively improved.

Further, the auxiliary conveying device 140 is configured to be driven by the power taken out from the conveyor 7 by the power take-off shaft 151 and is rotatably supported around the power take-off shaft 151 .

According to such a configuration, the rotation operation of the auxiliary transfer wheel 141 can be interlocked with the operation of the conveyor 7 , and the rotation speed of the auxiliary transfer wheel 141 can be synchronized with the transfer speed of the conveyor 7 . As a result, smooth transfer can be performed without causing stagnation or clogging of the bulb portion 2a at the transfer portion from the soil removal device 27 to the conveyor 7. In addition, since a dedicated drive source for rotating the auxiliary conveying wheel 141 is not required, it is possible to reduce the number of parts and the cost.

In addition, the auxiliary conveying wheel 141 is provided so as to interfere with the movement path of the bulb portion 2a from the soil removal device 27 to the conveyor 7 with the rotation locus H1. According to such a configuration, the action of conveying the bulb portion 2a by the auxiliary conveying foil 141 can be appropriately applied to the connection portion between the soil removing device 27 and the conveyor 7. As shown in FIG.

A comb-like guide 135 for preventing the onions 2 from falling is provided between the soil remover 27 and the conveyor 7 below the auxiliary conveying foil 141 . According to such a configuration, the cut stem and leaf portions 2b and the like are sandwiched between the comb-shaped guide bodies 135, and the portions of the stem and leaf portions 2b remaining on the bulb portion 2a are inserted into the concave portions 137a and 138a of the comb-shaped guide body 135. Stagnation, clogging, etc. of the bulb portion 2a can be suppressed by the feeding action of the auxiliary feeding foil 141, even when it is inserted.

In addition, regarding the position where the comb-shaped guide body 135 is arranged, the plurality of protrusions 116b of the third soil removing foil 110C and the plurality of protrusions 122 of the protrusion bar 121A of the conveyor 7 are alternately arranged, and the comb-shaped guide body 135 is arranged between them. A body 135 is positioned. According to such a configuration, the third soil removal foil 110C and the conveyor 7 can be brought close to each other to reduce the distance between them, so that the configuration can be made compact.

Further, the comb-shaped guide body 135 is provided at a position above a virtual plane E1 passing through the central axis C3 of the third soil removal wheel 110C and the central axis D1 of the conveyor driven shaft 118 (see FIG. 11). ). According to such a configuration, the portion above the center of the foil body 116 of the third soil removing foil 110C can act on the bulb portion 2a, so that the bulb portion 2a can be smoothly transferred to the conveyor 7 while preventing the bulb portion 2a from falling. inheritance can be performed.

According to the vegetable harvesting machine 1 of the present embodiment as described above, the onion 2 is dug up→conveyed→separation of the bulb portion 2a and the stem and leaf portion 2b→soil removal and transportation of the bulb portion 2a→collection of the bulb portion 2a and stem and leaf. The unit 2b can be discharged to the outside of the machine at the same time, and the work efficiency can be improved.

The above description of the embodiment is an example of the present invention, and the vegetable harvesting machine according to the present invention is not limited to the above-described embodiment. Therefore, it goes without saying that various modifications other than the above-described embodiments are possible according to the design and the like, as long as they do not deviate from the technical idea of the present invention.

In the above-described embodiment, the vegetable harvester 1 is applied to continuous rows without ridges, but it can also be used in fields with ridges. In the case of working in a field with ridges, the vegetable harvester 1 travels across the ridges by the left and right crawler traveling devices 4, and the foliage portion 2b discharged outside the machine is discharged into the furrows between the ridges. will be

In addition, in the embodiment described above, the soil removing device 27 includes the three soil removing foils 110, but the number of the soil removing foils 110 is not particularly limited. For example, a configuration may be adopted in which the number of soil removal foils 110 is increased to 5 to 7 and the soil removal foil 110 on the downstream side of the transfer is arranged above the transfer start end of the conveyor 7 . According to such a configuration, the bulb portion 2a dropped from the soil removal foil 110 on the transportation end side of the soil removal device 27 is surely inherited by the conveyor 7 and conveyed rearward and upward.

In the above-described embodiment, the vegetable harvester 1 includes the crawler traveling device 4 as the traveling device, but the traveling device may be of a wheel type configuration in which wheels are connected to the drive shaft.

1 vegetable harvester 2 onion (vegetable)
2a bulb part (vegetable body part)
2b foliage portion 3 traveling body 4 crawler traveling device (traveling device)
4e Upper surface 5 Operation unit 7 Conveyor (conveying device)
8 Accommodating part 24 Withdrawal conveying device 24X Outside withdrawing and conveying device 24Y Inside withdrawing and conveying device 25 Shoulder aligning device (position aligning device)
26 foliage cutting device 27 soil removing device 81 upstream clamping and conveying device 82 downstream clamping and conveying device 83 conveyor belt (endless rotation belt)
84 drive pulley (drive wheel)
85 driven pulley (driven wheel)
86 Conveyor belt (endless rotating belt)
87 drive pulley (drive wheel)
88 driven pulley (driven wheel)
91 Support shaft 94 Conveyor belt (endless rotating belt)
95 drive pulley (drive wheel)
96 driven pulley (driven wheel)
110 soil removal foil (roller)
110A First soil removal foil (soil removal part, roller)
110B Second soil removal foil (soil removal part, roller)
110C Third soil removal foil (transfer section, roller)
116b Projection 135 Comb guide (guide member)
140 Auxiliary Conveying Device 141 Auxiliary Conveying Wheel (Roller)
143b Projection 145 Chain case 146 Rotating support arm 147 Biasing spring 148 Biasing spring 151 Power take-off shaft 160 Drop guide device 240 Release guide device (first leaf discharge device)
250 leaf removal conveying device (second leaf removal device)
261 Lateral leaf ejector (guide part)
263 rear ejection chute (guide)
300 auxiliary operating unit

Claims (11)

A vegetable harvester for harvesting vegetables by extracting them from soil,
a pulling-out conveying device that pulls out vegetables from the soil and conveys them rearward and upward while pinching the stems and leaves of the pulled-out vegetables;
a foliage cutting device that separates and drops the main body of the vegetable from the foliage of the vegetable conveyed by the pull-out conveying device;
a soil removal device that receives the vegetable body cut off by the foliage cutting device and feeds the vegetable body backward while removing soil and mud attached to the vegetable body;
A vegetable harvester comprising: a conveying device that receives the vegetable main body from the soil removing device and conveys the vegetable main body rearwardly upward. The soil removing device is
A soil removing section for removing the soil and mud by rolling the vegetable body;
The vegetable harvesting machine according to claim 1, further comprising a transfer section that transfers the vegetable body section from the soil removing section to the conveying device. The soil removal device has a configuration in which a plurality of rollers having a plurality of projections projecting radially when viewed in the rotation axis direction are arranged with the left and right direction as the rotation axis direction,
3. The vegetable harvesting machine according to claim 2, wherein the roller forming the transfer section is provided at a position higher than the roller forming the soil removal section. The vegetable harvesting machine according to claim 2 or 3, further comprising a guide member provided between the rollers forming the transfer section and the conveying device. Equipped with a pair of left and right crawler traveling devices,
The left and right crawler traveling devices are provided within a width range of the drawing and conveying device in the left-right direction,
The vegetable harvesting machine according to any one of claims 1 to 4, characterized in that the soil removing device and the conveying device are provided between the left and right crawler traveling devices in the left-right direction. A fall guide device is provided for guiding the vegetable main body portion that is separated and dropped by the foliage cutting device at a position outside the range of the width of the soil removal device in the left and right direction to the soil removal device. 5. The vegetable harvester according to 5. An auxiliary conveying device provided on the upper side of the soil removing device and providing a feeding action to the conveying device to the vegetables sent from the soil dropping device to the conveying device. A vegetable harvester according to any one of the preceding items. The auxiliary conveying device includes a roller having a plurality of projections projecting radially when viewed in the direction of the rotation axis,
The vegetable harvesting machine according to claim 7, wherein the roller is provided so as to be rotationally driven in a direction in which the vegetables are conveyed backward by the plurality of protrusions. 9. The vegetable harvesting machine according to claim 8, wherein the roller is provided so as to be movable in a direction toward or away from the soil removal device. The auxiliary conveying device is configured to be driven by power extracted from the conveying device, and is provided so as to be vertically rotatable about a power take-off shaft that extracts the power of the conveying device. The vegetable harvester according to any one of claims 7 to 9, characterized in that: 10. The vegetable harvesting machine according to claim 8 or 9, wherein the rollers are provided so that a locus of rotation of the rollers passes through a movement path of the vegetables from the soil removing device to the conveying device. .

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