KR20230011865A - Crop harvester - Google Patents

Abstract

The present invention provides a harvester for an agricultural product, capable of easily executing work of rotating a harvesting unit laterally and maintaining a power delivery system about the harvesting unit when a side of the harvesting unit is opened, by having a structure in which the harvesting unit is installed on a front side of a driving body to rotate laterally. The harvester for an agricultural product which is a vegetable harvester (1) includes: the driving body (3) having a crawler driving device (4); and the harvesting unit (6) installed on the front side of the driving body (3) to ascend and descend on the driving body (3). The harvester for an agricultural product harvests an agricultural product using the harvesting unit (6) while moving the driving body (3) forward by the crawler driving device (4). The harvester for an agricultural product also includes a rotating support unit (400) supporting the harvesting unit (6) so that the harvesting unit rotates laterally on the driving body (3). The rotating support unit (400) maintains the power delivery system about the harvesting unit (6) from the driving body (3) regardless of a rotation position of the harvesting unit (6).

Description

Crop harvester {CROP HARVESTER}

The present invention relates to a crop harvester for harvesting crops.

Conventionally, as a crop harvester such as a vegetable harvester or a combine, a harvesting operation unit for pulling out or cutting crops is provided on the front side of a traveling machine, and the harvesting operation unit is operated via an elevating cylinder such as a hydraulic cylinder. There is a thing of a configuration installed so as to be able to move up and down with respect to the traveling body. In the crop harvester having such a configuration, for cleaning, maintenance, inspection, etc., the harvesting work unit is installed so as to be able to rotate in the horizontal direction with the vertical direction as the rotation axis direction with respect to the traveling body. There are so-called side-open configurations. (For example, see Patent Documents 1 to 3.).

Patent Literatures 1 and 2 disclose a configuration including a lifting cylinder and a configuration in which the reaping unit as a harvesting operation unit is capable of rotating to the left side with respect to the traveling body side. In Patent Document 3, in a configuration in which a reaping preprocessing device as a harvesting operation unit is capable of sideways rotation with respect to a traveling body, the mating state of the reaping output gear on the side of the traveling body and the reaping input gear on the side of the reaping preprocessing device is reaped. A configuration in which the preprocessor is automatically released by sideways rotation is disclosed.

Japanese Patent Publication Hei 3-63332 Japanese Patent Publication No. 4868069 Japanese Unexamined Patent Publication No. 2008-72992

Like the configuration disclosed in Patent Documents 1 and 2, according to the configuration in which the harvesting operation unit rotates sideways together with the lifting cylinder, it is not necessary to separate the lifting cylinder every time the harvesting operation unit is rotated laterally, but, for example, the harvesting unit It is necessary to attach or detach a power transmission member such as a belt for driving. For this reason, there is a problem that the operation of rotating the harvesting unit laterally takes time.

In addition, in the case of the configuration disclosed in Patent Literature 3, the reaping output gear and the reaping input gear in which the meshing state is automatically released in association with the lateral rotation of the reaping pretreatment device are exposed. For this reason, there is a concern about adhesion of dust or the like to the gears.

The present invention has been made in view of the above problems, and in the configuration in which the harvesting operation unit is installed to be able to rotate laterally on the front side of the traveling body, the operation of rotating the harvesting operation unit sideways can be easily performed, It is an object of the present invention to provide a crop harvester capable of maintaining a power transmission system to a harvesting unit in a side-opening state of the harvesting unit.

The crop harvester according to the present invention includes a traveling body having a traveling unit, and a harvesting operation unit installed on the front side of the traveling body to be able to move up and down with respect to the traveling body, while moving the traveling body forward by the traveling unit. A crop harvester that harvests crops by means of a harvesting operation unit, comprising a rotation support for supporting the harvesting operation unit so as to be able to rotate laterally with respect to the traveling body, the rotation support unit, regardless of the rotational position of the harvesting operation unit, It is configured to maintain a power transmission system from the traveling body side to the harvesting operation unit.

In the crop harvester according to the present invention, in the above-mentioned crop harvester, a conveying device for transporting the crops harvested by the harvesting work part, supporting the harvesting work part with respect to the conveying device, and being able to move up and down in the traveling body. An installed elevating frame is further provided, and the pivot support portion is installed on the elevating frame.

In the crop harvester according to the present invention, in the crop harvester, the rotation support part has a power transmission shaft for transmitting power from the traveling body side to the harvesting operation unit, and the power transmission shaft is driven by the rotation support unit. It is installed coaxially with the rotation axis of the said harvesting work part.

In the crop harvester according to the present invention, in the above-mentioned crop harvester, an actuator for elevating and lowering the harvesting operation unit with respect to the traveling body is provided on the side of the traveling body.

In the crop harvester according to the present invention, in the crop harvester, the actuator for elevating the harvesting operation part with respect to the traveling body includes a mount portion extending from a frame supporting the transport device and the elevating frame. are installed in a state in which they are connected to each other.

In the crop harvester according to the present invention, in the crop harvester, the rotation support part is installed on one side of the traveling body in the left-right direction, and the operating unit for operating the crop harvester is installed on the other side of the traveling body in the left-right direction. it has become

According to the present invention, in the configuration in which the harvesting operation unit is installed to be able to rotate laterally on the front side of the traveling body, the work of rotating the harvesting operation unit sideways can be easily performed, and the harvesting operation unit is side-opened. The power transmission system to the working part can be maintained.

1 is a left side perspective view of a vegetable harvester according to an embodiment of the present invention.
2 is a right side perspective view of a vegetable harvester according to an embodiment of the present invention.
3 is a left side view of a vegetable harvester according to an embodiment of the present invention.
4 is a plan view of a vegetable harvester according to an embodiment of the present invention.
5 is a left side sectional view of a vegetable harvester according to an embodiment of the present invention.
6 is a left rear perspective view showing a frame configuration of a harvesting work unit according to an embodiment of the present invention.
Fig. 7 is a left side view showing the construction of a transport cutting unit according to an embodiment of the present invention.
Fig. 8 is a left side sectional view showing an earth dropping device and its vicinity according to an embodiment of the present invention.
9 is a front view of a traveling body according to an embodiment of the present invention.
10 is a diagram showing a power transmission configuration in a vegetable harvester according to an embodiment of the present invention.
11 is an enlarged view of a part of FIG. 10 .
Fig. 12 is a right-rear perspective view showing a front and rear intermediate portion of a vegetable harvester according to an embodiment of the present invention.
Fig. 13 is an upper perspective view showing a front and rear intermediate portion of a vegetable harvester according to an embodiment of the present invention.
14 is a right side view showing a state in which the crop processing unit of the vegetable harvester according to one embodiment of the present invention is raised.
Fig. 15 is a perspective view showing the configuration of a lower frame support part according to an embodiment of the present invention.
Fig. 16 is an exploded perspective view showing the configuration of a lower frame support part according to an embodiment of the present invention.
Fig. 17 is a left sectional view showing the configuration of a lower frame support part according to an embodiment of the present invention.
Fig. 18 is a plan view showing the configuration of an upper frame support part according to an embodiment of the present invention.
19 is a plan view showing a side-opened state of a harvesting work unit according to an embodiment of the present invention.
Fig. 20 is a front perspective view showing a side-opened state of a harvesting work unit according to an embodiment of the present invention.
Fig. 21 is a rear perspective view showing the configuration of a rotation support part according to an embodiment of the present invention.
Fig. 22 is a longitudinal sectional view showing the configuration of a rotation support part according to an embodiment of the present invention.
Fig. 23 is a front perspective view showing the configuration of a rotation support part according to an embodiment of the present invention.
Fig. 24 is a perspective view showing the configuration of a cover of a transmission shaft of a working part according to an embodiment of the present invention.
Fig. 25 is a partially cut-away right side view showing the configuration of a cover for a transmission shaft of a working part according to an embodiment of the present invention.

The present invention facilitates the operation of side-opening the harvesting operation unit by studying a rotation structure for side-opening the harvesting operation unit as a pre-processing unit in a crop harvester having a traveling body and a harvesting operation unit installed on the front side of the traveling body. In addition to promoting, it is intended to enable transmission of power to the harvesting work unit in a side-open state. EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described.

In the embodiment of the present invention described below, as a crop harvester related to the present invention, a vegetable harvester in which a crop (vegetable) to be harvested is an onion, which is a type of phosphorus vegetable, will be described as an example. However, the crop harvesting machine according to the present invention can be widely applied as a vegetable harvesting machine for harvesting other root vegetables such as garlic or lily root or root vegetables such as carrots, or a crop harvesting machine such as a combine harvesting grain or the like.

As shown in FIGS. 1 to 5 , the vegetable harvester 1 according to the present embodiment is an onion harvester that extracts and harvests onions 2 planted in a field from soil. In the packaging, the onion (2) is continuously grained along a straight line. In the description of the present embodiment, the field where the onion 2 is grown is a so-called continuous row field without furrows. 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 and right side of the vegetable harvester 1, respectively. do.

The vegetable harvester (1) first pulls out the onion (2) planted in the soil while pinching the foliage portion (2b) extending from the stem portion (2a) to the ground, While maintaining the hanging posture of the onion (2) holding the onion (2), it is conveyed toward the rear and upward, and during the conveyance, the stem and leaf portion (2b) is cut and removed from the stem portion (2a), and the stem portion (2a) is harvested. do. The foliar portion 2b removed from the stem portion 2a is discharged to a predetermined site in the vegetable harvester 1. The vegetable harvester 1 performs such a harvesting operation while traveling along the onion 2 cropping line.

The vegetable harvester 1 according to the present embodiment is a self-propelled harvester, and has a multi-tank configuration (six sets) for harvesting by simultaneously pulling out and conveying six sets of onions 2 while traveling. . In the vegetable harvester 1, the head neck portion 2a of the onion 2 is a part to be harvested, and the head neck 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 parts, and a driving operation of the vegetable harvester 1 by a driver (worker) of the vegetable harvester 1 An operation unit 5 in which various operations such as harvesting operation are performed, a harvesting operation unit 6 as a pre-processing unit for harvesting onions 2, and conveying the harvested onion 2 by the harvesting operation unit 6 A conveyor 7 as a conveying device and an accommodating portion 8 for accommodating the onion 2 conveyed by the conveyor 7 in a predetermined collection container are provided.

The traveling body 3 has a body frame 9 formed by three-dimensionally framed by a plurality of frame members, and crawler traveling devices 4 are disposed on both left and right sides of the body frame 9. With respect to the body frame 9, the operation part 5, the harvesting work part 6, the conveyor 7, and the accommodating part 8 are provided.

The crawler traveling device 4 is a crawler type traveling device, and constitutes a crawler part for moving the body in the traveling body 3. The crawler traveling device 4 has drive wheels 4a supported at the rear and lower portions of the body frame 9, and supported at the front and rear lower portions of the body frame 9 at a height position below the drive wheels 4a. It has a driven wheel 4b, a plurality of driving wheels 4c provided between the front and rear driven wheels 4b, and a caterpillar 4d wound around these wheels. When viewed from the side, the crawler traveling device 4 has a substantially triangular shape with a portion near the drive wheel 4a located in the rear upper portion as the top, and of the caterpillar 4d, the drive wheel 4a and the front side The part between the follower wheels 4b of is arranged in a forward-down inclined shape. The left and right crawler traveling devices 4 are driven by an engine 10 included in the vegetable harvester 1 .

The engine 10 has a recoil starter and is mounted on the rear left side of the traveling body 3 . A transmission 11 is provided between the rear and upper portions of the left and right crawler traveling devices 4 as a position forward and downward of the engine 10 (see Fig. 5). The transmission 11 transmits the power from the engine 10 to the left and right crawler traveling devices 4 by changing gears appropriately.

The operation unit 5 is installed on the left side of the traveling body 3 . Specifically, the operation unit 5 is provided on the left side of the conveyor 7 and above the crawler traveling device 4 on the left side. The operating unit 5 is a portion for operating the vegetable harvester 1 and has an operating box 12 in which various operating tools such as levers and switches are arranged. In the operation box 12, a travel/work clutch lever that serves as both a travel clutch and a work clutch, a shift lever for traveling of the aircraft, a lift lever for raising and lowering the working part, left and right side clutch levers, and an engine for stopping the engine 10 A stop switch is installed.

Behind the operation box 12, a driver's seat 13 is provided. The driver's seat 13 is installed in a supported state with the body frame 9 via the seat support frame 14 . The seat support frame 14 is a frame portion formed by forming a frame with rod-shaped members or the like, and supports the driver's seat 13 at a position forward and upward of the engine 10 .

The operation unit 5 has a horizontal boarding step 15 on the rear side of the operation box 12 in the front-back direction. The boarding step 15 is located in front and below the driver's seat 13 and constitutes a floor portion of the operation unit 5 . The boarding step 15 is installed so as to form the upper surface of the operating unit frame 16 installed on the left side of the body frame 9. The operating unit frame 16 is a frame portion formed by forming a frame in the shape of a rectangular parallelepiped with rectangular steel tubular members or the like, and is installed in a supported and fixed state with respect to the body frame 9 . The operation unit frame 16 supports the front portion of the seat support frame 14 .

On the front and right sides of the boarding step 15, a front frame 17 and a side frame 18 constituted in a frame shape by rod-shaped members are erected and installed. The front frame 17 and the side frame 18 function as handrails when the boarding step 15 or the driver's seat 13 is moved up and down, and the portion held by the operator on the boarding step 15 during work is do. The operation box 12 is supported with respect to the front frame 17 via a predetermined supporting member.

The operation box 12 is operated by a worker seated on the driver's seat 13 or a worker standing on the boarding step 15 . On the lower left side of the boarding step 15 on the lifting side, an auxiliary step 19 for raising and lowering is provided with respect to the boarding step 15 .

Hereinafter, each device, the conveyor 7, the accommodating part 8, etc. of the harvesting work part 6 which the vegetable harvester 1 is equipped with is demonstrated using FIGS. 1-14.

The harvesting work unit 6 includes a weeding device 21, a scraping device 22, a digging device 23, a drawing and conveying device 24, a shoulder alignment device 25, and a foliage A cutting device 26 and a soil dropping device 27 are provided. These devices are supported with respect to the working unit frame 30 provided in the harvesting unit 6 .

[work frame]

The working part frame 30 includes a rear horizontal frame part 31 installed at the rear end of the working part frame 30 and a front and upper part installed in the front and upper parts of the rear horizontal frame part 31. It has a transverse frame portion 32 and side frame portions 33 provided on both left and right sides of these frame portions and connecting the rear transverse frame portion 31 and the front transverse frame portion 32 to each other. The working part frame 30 is configured substantially symmetrically left and right as a whole.

The rear transverse frame portion 31 is a straight frame portion extending in the left-right direction and is constituted by a rectangular steel tubular member. The rear transverse frame part 31 is installed in a position above the soil dropping device 27 installed in front of the conveyance start end of the conveyor 7. The rear transverse frame portion 31 has a length that extends both left and right ends outward from the left and right crawler traveling devices 4 on either side.

The front transverse frame portion 32 is a straight frame portion extending in the left-right direction, and is constituted by a pipe-shaped member having a circular cross-sectional shape. The front transverse frame part 32 is provided in the position of the rear-upper direction of the scraping device 22. The front transverse frame portion 32 has a length that extends both left and right ends outward from the left and right crawler traveling devices 4 on the left and right.

The side frame portion 33 has a first frame portion 33a constructed between the rear transverse frame portion 31 and the front transverse frame portion 32, and the lower side from the front transverse frame portion 32 It has a second frame portion 33b extending toward the rear and a third frame portion 33c extending toward the front from the rear transverse frame portion 31 and connected to the lower end of the second frame portion 33b. Each frame part constituting the side frame part 33 is constituted by a rectangular steel pipe-shaped member.

The first frame portion 33a is a frame portion that slopes upward in a straight line from the rear side toward the front side when viewed from the side and has a predetermined curved shape when viewed from the top. The first frame portion 33a connects the rear end side to the vicinity of the left and right end portions of the rear transverse frame portion 31, and connects the front end portion to the left and right end portions of the front transverse frame portion 32, there is.

The second frame portion 33b is a straight frame portion extending rearwardly from the front transverse frame portion 32 with its upper end connected to the left and right ends of the front transverse frame portion 32. The second frame portion 33b is located outside the left and right sides of the first frame portion 33a in the left-right direction. The 2nd frame part 33b is arrange|positioned in the shape of a forward inclination, and it is provided so that it may form an acute angle with the 1st frame part 33a when seen from the side.

The third frame portion 33c includes a fourth frame portion 33d extending from the lower end of the second frame portion 33b toward the left and right outward, and the left and right outer ends of the fourth frame portion 33d and the rear transverse frame. A forwardly descending inclined fifth frame portion 33e, which is constructed between the left and right ends of the portion 31, and a sixth frame portion 33f extending forward from the left and right inner portions of the fourth frame portion 33d have

The 5th frame part 33e and the 6th frame part 33f are arrange|positioned parallel to each other so that it may form the shape of a continuous forward downward straight line when seen from the side. In the third frame portion 33c, when viewed from the side, the second frame portion 33b and A substantially right-angled triangle shape with the corner part by the 5th frame part 33e on the right-angled side is formed.

The fifth frame portion 33e is located on the left and right outer sides of the left and right crawler traveling devices 4, and forms the left and right side edges of the work section frame 30. The sixth frame portion 33f is located right and left inside the fifth frame portion 33e in the left-right direction.

In the working part frame 30 having the configuration described above, the rear transverse frame portion 31, the front transverse frame portion 32, and the fifth frame portion 33e of the left and right side frame portions 33 , the fourth frame portion 33d, and the second frame portion 33b constitute a frame portion having a substantially rectangular frame shape with the left-right direction being the longitudinal direction in plan view. This frame part is installed so as to surround the rear part of the harvesting work part 6.

[Semisecond device]

The dividing device 21 is a device for dividing the onion 2 by lifting the lateral leaf portion 2b of the onion 2 planted in the field upward. The sorting device 21 separates the onions 2 by lifting the lateral and leaf parts 2b of the onion 2 in a state where it has collapsed on the field upward while passing between the rows. In order to divide the onion 2 into two sets, four sorting devices 21 are provided so as to sandwich the two sets corresponding to the six consecutive sets in the left-right direction. In addition, seven dividing devices 21 may be provided corresponding to six sets in order to divide the onion 2 for each set.

The spraying device 21 has a spraying case 51 having an oily shape and a plurality of tines 52 protruding from the spraying case 51 . The dusting case 51 has an elongated, thick plate-like outer shape with the left-right direction as the plate thickness direction. When viewed from the side, the spraying case 51 is installed in an inclined shape with the longitudinal direction inclined in the backward rising direction. The inclination angle of the dividing case 51 with respect to the horizontal direction is, for example, about 50 to 60 degrees.

The tines 52 protrude from the periphery of the dividing case 51 . The plurality of tines 52 are fixed at predetermined intervals with respect to the chain 54 wound around the front and rear sprockets 53a and 53b installed with the left and right directions as the rotation axis directions at both ends in the longitudinal direction of the dusting case 51. installed (see Fig. 10).

The four dividing devices 21 are installed in parallel with predetermined intervals in the left-right direction. The four sorting devices 21 have a rear sprocket 53b fixed to a common preprocessing drive shaft 55 extending in the left-right direction, receive rotational power from the preprocessing drive shaft 55, and chain 54 and Together, the plurality of tines 52 are vertically rotated (see Fig. 10). The preprocessing drive shaft 55 is incorporated in the preprocessing shaft case 56 connecting the rear ends of the four sorting devices 21 to each other, and receives transmission of power from the engine 10 to rotate. The sorting device 21 separates the onion 2 by lifting the lateral and leaf parts 2b of the onion 2 with the plurality of tines 52 that rotate.

The four dividing devices 21 are connected through a support plate 58 fixed to the front side of the front transverse frame portion 32 and a support arm 59 extending from the support plate 58 toward the front and downward, the front transverse frame portion (32) is supported. The upper end of the support arm 59 is fixed to the support plate 58 with fasteners such as bolts, and the lower end is fixed to the rear side of the upper part of the dividing device 21 by fasteners such as bolts. there is. At the lower ends of the spraying devices 21 on both the left and right sides, spraying bodies 60 that form a pointed shape toward the front are attached.

[Scraping device]

The scraping device 22 is installed on the rear side of the sorting device 21 . The scraping device 22 is a device for scraping the leaf portion 2b of the onion 2 from the front side of the body, passing it to the drawing and conveying device 24, and assisting the drawing by the drawing and conveying device 24. Six scraping devices 22 are provided corresponding to six consecutive sets in the left-right direction, and are configured to function as a pair. In short, the vegetable harvester 1 includes a pair of scraping devices 22 as one set, and three sets of scraping devices 22, left, middle, and right, arranged side by side in a horizontal arrangement. A pair of scraping devices 22 are installed between the dividing devices 21 adjacent to each other in the left-right direction.

For six sets of onions 2, the left pair of scraping devices 22 collectively scrapes the lateral and leaf parts 2b of the left two sets of onions 2, and the left drawing and conveying device 24 handed over to Similarly, the middle pair of scraping devices 22 scrapes the lateral and leaf parts 2b of the middle two sets of onions 2 together, and passes them to the middle drawing and conveying device 24. In addition, the pair of scraping devices 22 on the right side collects and scrapes the lateral and leaf parts 2b of the onion 2 for two sets on the right side, and passes them to the drawing conveying device 24 on the right side.

The scraping device 22 has an oily scraping frame 65 and a plurality of tines 66 protruding from the scraping frame 65 . The scraping frame 65 has an elongated, thick plate-like outer shape, and when viewed from the side, the longitudinal direction is inclined in an upward upward direction, and is installed in an inclined shape, parallel to or substantially parallel to the scraping device 22. .

The tines 66 protrude from the periphery of the scraping frame 65 . A plurality of tines 66 are belts wound around front and rear pulleys 67a and 67b installed in a direction perpendicular to the plate surface of the scraping frame 65 as a rotating shaft direction at both ends of the scraping frame 65 in the longitudinal direction. 68 are fixed at predetermined intervals (see Fig. 10).

The pair of scraping devices 22 of each set are installed so as to form a substantially inverted "V" shape with the space between them gradually narrowing from the lower side to the upper side when viewed from the front. The scraping device 22 is driven by receiving transmission of rotational power of the preprocessing drive shaft 55 via the scraping drive shaft 69 . The scraping drive shaft 69 extends from the preprocessing drive shaft 55 backward and downward. The rotational power of the preprocessing drive shaft 55 is transmitted to the scraping drive shaft 69 via bevel gears 70a and 70b (see Fig. 10).

As shown in FIG. 10 , the scraping device 22 has a rear pulley 67b fixed to the scraping drive shaft 69, receives rotational power of the scraping drive shaft 69, and a plurality of belts 68 together. The tines 66 of are rotated horizontally. The scraping drive shaft 69 extends from the preprocessing shaft case 56 rearward and is built into the scraping drive shaft case 71 connecting the preprocessing shaft case 56 and the scraping frame 65 to each other.

Further, the lower end of the scraping frame 65 is interposed with the supporting plate 72 between the lower end of the corresponding grassing case 51 located substantially forward of the scraping frame 65. The lower end of the scraping frame 65 is jointly supported with respect to the lower end of the dividing case 51 by the supporting plate 72 .

[digging device]

The digging device 23 is installed below the scraping device 22 . The digging device 23 is a so-called subsoiler, and is a device for breaking down the soil by digging into the lower side of the onion 2 in order to easily pull out the onion 2 by the pulling and conveying device 24. .

The digging device 23 includes a digging blade 75 having a substantially "U" shape when viewed from the front, a blade support 76 supporting both left and right sides of the digging blade 75, and left and right blade supports 76 It has a vertical frame portion 77 for driving and supporting each.

The digging blade 75 is a portion forming a substantially "U" shape when viewed from the front, and has a horizontal blade portion extending in the left and right directions and a vertical blade portion rising from both ends of the horizontal blade portion, and the upper portion of the vertical blade portion is a blade It is connected and supported by the support body 76. The digging blade 75 is provided in an elongated shape so as to position both ends in substantially the same position as the dividing device 21 at both left and right ends in the left-right direction.

The blade support body 76 is located inside the left and right of the 6th frame part 33f of the work part frame 30, and is pivotally supported with respect to the 6th frame part 33f so that it can rotate. To the upper end of the blade support 76, the lower end of the longitudinal frame 77 is rotatably connected. The longitudinal frame portion 77 extends downward from both left and right ends of the front transverse frame portion 32 positioned above the blade support body 76 . The longitudinal frame portion 77 is connected to an end portion of the digging drive shaft 78 incorporated in the front transverse frame portion 32 via an eccentric mechanism (see Fig. 10). As a result, the digging drive shaft 78 rotates, so that the longitudinal frame portion 77 reciprocates in the longitudinal direction substantially along the vertical direction. The drilling drive shaft 78 receives transmission of power from the engine 10 and rotates.

With such a configuration, when the longitudinal frame portion 77 reciprocates, the blade support 76 and the digging blade 75 integrally rock back and forth with the left-right direction as the rotation axis direction. As the vegetable harvester 1 advances, the digging device 23 inserts the digging blade 75, which swings back and forth, into the ground and places it below the head end 2a of the onion 2, thereby softening the soil. and carry out digging for 6 trillion. The dimension in the left-right direction of the digging blade 75 in the digging device 23 is the digging width by the digging device 23.

[Pulling and conveying device]

The pulling and conveying device 24 is a device that pulls out the onion 2 from the soil and conveys it toward the rear and upward while holding the stem and leaf portion 2b of the pulled out onion 2. The pull-out conveying device 24 is installed on the rear side of the scraping device 22, clamps the foliar portion 2b handed over from the scraping device 22, and moves the foliar portion 2b backward and upward (backward obliquely upward). While conveying, the onion 2 is pulled out, and the onion 2 is conveyed toward the rear and upward in a standing posture.

The drawing and conveying device 24 is installed obliquely from a position immediately behind the lower part of the scraping device 22 toward the rear and upper directions. The inclination angle 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 scraping device 22 . Therefore, the vegetable harvester 1 is equipped with three pull-out conveyance devices 24 of the left side, the middle side, and the right side arranged side by side in a horizontal arrangement.

As shown in FIG. 7 , the pull-out conveyance device 24 pulls out the onion 2 from the soil at the front of the device, and conveys the onion 2 upward while holding the stem and leaf portion 2b of the pulled out onion 2. do. The pull-out conveyance device 24 includes a conveyance belt 83, which is a pair of endless pivot tables, a drive pulley 84 as a drive wheel provided on the rear side as the conveying lower side, and a front side as the conveying upper side. It has a structure wound around a driven pulley 85, which is a driven wheel installed on the . That is, the pull-out conveyance device 24 is a belt conveyance device provided with a pair of left and right belt grippers 82 in which a conveyance belt 83 is wound around a drive pulley 84 and a driven pulley 85, and the left and right belts It is comprised so that the foliage part 2b may be clamped and conveyed between the clamping bodies 82.

A pair of conveyance belts 83 clamp the lateral leaf portion 2b with mutually opposing portions, and rotate in a direction in which the mutually opposing sides are moved in the conveying direction by the rotational driving force of the drive pulley 84. . The driving pulley 84 and the driven pulley 85 make the direction orthogonal to the inclination of the drawing conveyance device 24 the direction of a rotating shaft when viewed from the body side. About the transport belt 83, a tension pulley, a guide roller, etc. are installed.

The pulling and conveying device 24, at its front end, clamps the foliage portion 2b by the opposing surfaces of a pair of conveying belts 83, and rotates the onion 2 by the rotation of the conveying belt 83. pulled out of the soil. The plucked onion 2 is transported backwards and upwards in a substantially vertically suspended posture with the portion of the leaf portion 2b being held by a pair of transport belts 83. The pulling and conveying device 24 is extended so as to position the conveying end (rear end) at a substantially central portion of the vegetable harvester 1 in the front-back direction.

As shown in FIG. 10 , the drive pulley 84 of the pull-out conveyance device 24 is fixed to a conveyance input shaft 89 that rotates by receiving power from the engine 10, and the conveyance input shaft 89 and drives the rotation integrally. The conveyance input shaft 89 extends rearwardly downward on the rear side of the drive pulley 84 and is incorporated in a tubular conveyance input shaft case 90 along the axial direction of the conveyance input shaft 89 . When the driving pulley 84 is driven to rotate, the driven pulley 85 rotates along with the rotation of the transport belt 83 .

In addition, in the vegetable harvester 1, as shown in FIG. 4, with regard to the arrangement of the three sets of pull-out conveyance devices 24 installed on the left, center, and right sides, the central pull-out conveyance device 24 is viewed from a plan view. At this time, it is provided so that the linear conveyance direction is made along the front-back direction, and it extends along the front-back direction. On the other hand, the left and right drawing and conveying devices 24 incline the linear conveying direction from the left and right outside to the left and right inside when viewed from above, and tilt from the left and right outside to the left and right inside from the front to the rear. It is installed ideologically. In short, when the vegetable harvester 1 is viewed from the front, the left and right pull-and-carry devices 24 are installed inclined from the bottom to the top, from the left and right outside to the left and right inside. The left and right drawing and conveying devices 24 are installed symmetrically with respect to the left and right directions.

[Shoulder alignment device]

The shoulder aligning device 25 is installed on the rear side of the drawing conveying device 24 . Specifically, the shoulder aligning device 25 is provided below the second half 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 lower part of the conveying side of the pull-out conveying device 24 with the height of the neck part 2a of the onion 2 being conveyed. . The shoulder aligning device 25 makes the shoulder portion of the upper part of the head neck portion 2a of the onion 2 equal, and the height of the shoulder portion of the onion 2 conveyed by the drawing and conveying device 24 is aligned.

The shoulder aligning device 25 is provided along a rearwardly raised inclined plane that is gentler than the inclination of the pull-out conveying device 24 when viewed from the side. The inclination angle of the shoulder alignment device 25 with respect to the horizontal direction is about 20°, for example. The shoulder aligning device 25 is provided corresponding to each drawing and conveying device 24 . Therefore, the vegetable harvester 1 is provided with three left, middle, and right shoulder alignment devices 25 arranged side by side in a horizontal arrangement.

The shoulder aligning device 25 has a pair of conveying belts 93, which are a pair of endless rotation tables, respectively, drive pulleys 94, which are drive wheels provided on the front side serving as the upper conveying side, and driven wheels serving as follower wheels provided on the rear side serving as the lower conveying side. It has a structure wound around a pulley (95). That is, the shoulder aligning device 25 includes a pair of left and right belt transport members 92 in which a transport belt 93 is wound around a driving pulley 94 and a driven pulley 95, and the left and right belt transport members 92 ) is configured so that the foliage portion 2b is positioned between and conveyed.

A pair of conveyance belts 93 clamp the lateral leaf portion 2b by mutually opposing portions, and rotational drive of the drive pulley 94 rotates the opposing sides in the conveying direction of the lateral leaf portion 2b. rotates in the direction in which it moves. The driving pulley 94 and the driven pulley 95 make the direction orthogonal to the inclination of the shoulder aligning device 25 the rotating shaft direction when seen from the body side. In addition, a tension pulley or the like is provided for the transport belt 93 . The gap between the opposing surfaces of the pair of transport belts 93 is set narrower than the neck part 2a of the common onion 2.

The shoulder aligning device 25 locates the front end of each belt conveyance device 92 immediately below the front-back and substantially center portions of each belt gripper 82 of the pull-out conveyance device 24 . When viewed from the side, the shoulder aligning device 25 forms a substantially “V” shape with the rear part of the pulling and conveying device 24 due to the difference in inclination angle between the shoulder aligning device 24 and the drawing and conveying device 24, The vertical distance between them and the drawing and conveying device 24 is gradually widened from the front side to the rear side.

The shoulder aligning device 25 is interlocked with the drawing and conveying device 24, and is driven in synchronization with the drawing and conveying device 24. The belt transport members 92 of the shoulder aligning device 25 are interlocked with the belt holding members 82 of the corresponding pull-out transport devices 24, respectively. The drive pulleys 94 of the belt conveyors 92 on the left and right of the shoulder alignment device 25 are driven by rotational power transmitted from the conveyance input shaft 89 that drives the drive pulleys 84 of the pull-out conveyance device 24, respectively. driven by rotation.

10 and 11, the first pulley 86 is fixed to the upper end of the conveyance input shaft 89, and one end side of the transmission shaft 91 provided in front of the first pulley 86 ( The second pulley 87 is fixedly installed on the upper end side). The transmission shaft 91 is a shaft whose axial direction is parallel to the conveyance input shaft 89, and is provided in an intermediate portion between the driving pulley 84 and the driven pulley 85 in the belt clamping body 82, there is. A transmission belt 88 is wound around the first pulley 86 and the second pulley 87 . The transmission belt 88 is installed parallel to the transport belt 83 . About the transmission belt 88, a tension pulley, a guide roller, etc. are provided.

The rotational power of the conveyance input shaft 89 is transmitted to the transmission shaft 91 via the first pulley 86 , the second pulley 87 , and the transmission belt 88 . The rotational power of the transmission shaft 91 is transmitted via the first gear 97 and the second gear 98 to the input shaft 99 to which the drive pulley 94 is fixed to one end side. The first gear 97 is fixed to the other end side (lower end side) of the transmission shaft 91 . The second gear 98 is fixed to the upper end of the input shaft 99 extending upward from the driving pulley 94 .

The transmission shaft 91 and the input shaft 99 have different axial directions from each other according to the difference in inclination angles of the pull-out conveying device 24 and the shoulder aligning device 25 . The 1st gear 97 and the 2nd gear 98 are comprised so that it may engage diagonally according to the difference in the axial direction of transmission shaft 91 and input shaft 99 comrades.

In this way, the shoulder aligning device 25 is driven by a driving force taken out from the conveying input shaft 89 for driving the driving pulley 84 of the drawing conveying device 24 . That is, the shoulder aligning device 25 is conveyed through the belt transmission mechanism including the first pulley 86 or the first gear 97 in the input shaft 99 of the left and right belt conveyance bodies 92 and the like. It is comprised so that the transmission of the rotational power of the input shaft 89 is received, the drive pulley 94 is rotationally driven, and the transport belt 93 is rotationally driven.

The shoulder aligning device 25 places the leaf portion 2b of the onion 2 transported by the pull-out conveying device 24 between a pair of conveying belts 93, and the pair of conveying belts 93 By pressing the shoulder of the head neck portion 2a of the onion 2, the height position of the head neck portion 2a is aligned at a predetermined height position. That is, the shoulder alignment device 25 locates the lower diameter portion 2a on the lower side of a pair of transport belts 93 disposed at a gentle inclination with respect to the transport belt 83 of the pull-out transport device 24, and draws As the onion 2 is conveyed by the conveying device 24, the pair of conveying belts 93 are brought into contact with both shoulder portions of the neck portion 2a, and the onion 2 during the conveying movement is moved upward. The height position of the onion 2 is aligned in the manner of being caught and raked (see the movement trajectory S1 of the head neck portion 2a in FIG. 7). Here, since the gripping force of the pair of conveying belts 83 of the pull-out conveying device 24 is set larger than the gripping force of the pair of conveying belts 93 of the shoulder alignment device 25, the onion 2 ) is obtained. The onion 2, whose height position is aligned, is guided to the foliage cutting device 26 at the rear.

[Foliage cutting device]

The foliage cutting device 26 is installed in the rear upper portion of the shoulder alignment device 25 and is disposed below the rear portion of the drawing and conveying device 24 . The leaf cutting device 26 is a device for cutting the leaf portion 2b of the onion 2 conveyed by the pulling and conveying device 24, and removing and dropping the leaf portion 2a from the leaf portion 2b. to be. The foliar cutting device 26 cuts the lateral leaf portion 2b of the onion 2, the shoulder height of which has been aligned by the shoulder arranging device 25, so that the lateral leaf portion 2b is approximately the same length on the side of the lateral stem 2a. cut so as to remain

The foliage cutting device 26 has a pair of left and right disk-shaped rotary blades 100 provided coaxially with the driven pulley 95 in each belt conveyor 92 of the shoulder alignment device 25. The pair of rotary blades 100 are arranged in close proximity up and down with their outer edges overlapping each other, and are installed substantially symmetrically with the movement path of the onion 2 interposed therebetween. The rotary blade 100 is supported by the support shaft 96 of the driven pulley 95, and is installed parallel to the driven pulley 95 at a position above the driven pulley 95. The rotary blade 100 rotates integrally with the driven pulley 95 of the shoulder aligning device 25 that operates by receiving rotational power from the pull-and-carry device 24 .

In a state where the onion 2, which is moving upwards at a backward inclination as a conveying action by the pull-out conveying device 24, is caught in the upward movement by the shoulder alignment device 25 and positioned in the vertical direction, the left and right rotary blades ( 100) to a position between When the lateral blade portion 2b located between the pair of transport belts 93 of the shoulder alignment device 25 reaches the overlapping portion of the left and right rotary blades 100, it is cut by the rotating blade 100. do. Here, the lateral leaf portion 2b receives the action of the rotary blade 100 in a pulled state while being clamped by the pull-out conveying device 24 and the shoulder alignment device 25, so that it is cut satisfactorily. The blade portion 2a detached from the leaf portion 2b by the pair of rotary blades 100 falls and is guided to a predetermined place.

As described above, the vegetable harvester 1 according to the present embodiment has a unit configuration including the pull-out conveyor 24, the shoulder alignment device 25, and the foliage cutting device 26, left, middle, and right. 3 sets of are provided. Below, the unit structure comprised including the drawing conveyance device 24, the shoulder alignment device 25, and the foliage cutting device 26 is called "conveyance and cutting unit structure 80". Also, in Fig. 7, the conveying cutting unit configuration 80 on the left side is shown.

[Soil dropping device]

The soil dropping device 27 receives the onion 2 pulled out from the soil and sends the onion 2 backward while dropping soil or mud adhering to the onion 2. That is, the earth dropping device 27 receives the root neck portion 2a removed by the foliage cutting device 26, and drops the soil or mud adhering to the head neck portion 2a while dropping the blade neck portion 2a. is a device that sends the

The earth dropping device 27 is installed below the shoulder aligning device 25 and the leaf cutting device 26 in the left and right intermediate portions of the body. The soil dropping device 27 is installed in a supported state with respect to a predetermined site on the traveling body 3 . The earth dropping device 27 is installed in a common configuration with respect to the three sets of transport and cutting unit configurations 80 . That is, the earth dropping device 27 receives the cutting edge portion 2a falling by cutting the leaf portion 2b from each conveying cutting unit structure 80 on both left and right sides and in the center, and The edge part 2a is conveyed to the rear side while performing soil dropping.

The earth dropping device 27, as a soil dropping rotating body, has three earth dropping wheels 110 (110A, 110B, 110C), and the earth dropping wheel 110 acts on the diameter portion 2a. By doing so, soil or mud adhering to the head end 2a is knocked off (see Fig. 8). The soil dropping wheel 110 is a rotating body with the left-right direction of the body as the direction of the rotation axis. The upper side of the three earth dropping wheels 110 becomes the conveying surface side of the cutting edge portion 2a, and the cutting edge portion 2a is conveyed backward by the action of the three earth dropping wheels 110. Therefore, the rotational direction of the three earth dropping wheels 110 driven to rotate is clockwise (clockwise rotation direction) when viewed from the left side.

The three soil dropping wheels 110 are formed side by side from the front side to the rear side. The three soil dropping wheels 110 are sequentially from the front side, as a first soil dropping wheel 110A, a second soil dropping wheel 110B, and a third soil dropping wheel 110C. The three earth dropping wheels 110 are installed rotatably in a temporary state between the left and right earth dropping frames 111 . The soil dropping frame 111 is a frame part in the shape of a vertical plate. Between the front ends of the soil dropping frames 111 on either side, a front wall portion 112 having substantially the same height as the earth dropping frames 111 is provided. The lower side of the portion surrounded by the left and right earth dropping frames 111 and the front wall portion 112 is open.

Inside the frame portion constituted by the left and right earth dropping frames 111 and the front wall portion 112, three earth dropping wheels 110 are installed. And the conveyor 7 is connected to the rear side of this frame part.

Among the three dirt dropping wheels 110, the front first dirt dropping wheel 110A and the second dirt dropping wheel 110B are installed at the same height or substantially the same height position. With respect to these two front dirt dropping wheels 110, the third dirt dropping wheel 110C located on the rear side is installed at a higher position than the front two dirt dropping wheels 110. Accordingly, the third dropping wheel 110C comes closer to the conveying start end of the conveyor 7 and functions as a conveying part that conveys the diameter portion 2a to the conveyor 7 .

The dropping wheel 110 has a drive shaft 115 that rotates by receiving power from the engine 10, and a plurality of wheel bodies 116 formed by radially arranging rod-shaped protrusions. The drive shaft 115 and the plurality of wheel bodies 116 are installed so as to rotate integrally. The wheel main body 116 is configured as an integral member made of an elastic body such as rubber.

The wheel body 116 has a rotating base, which is a substantially cylindrical portion passing through the drive shaft 115, and a plurality of (six) protrusions protruding radially from the rotating base, and has a so-called star wheel shape. In the soil dropping wheel 110, a plurality of (for example, six) wheel bodies 116 are provided in parallel in the axial direction of the drive shaft 115, and the left and right soil dropping frames 111 It is provided in the range covering substantially the whole of the left-right direction in between. The plurality of wheel main bodies 116 of each soil dropping wheel 110 have a common shape and size, and are provided in a common phase with respect to the rotation direction of the soil dropping wheel 110 . Further, the phases of the plurality of wheel main bodies 116 in each soil dropping wheel 110 may be different.

Three earth dropping wheels 110 are installed between adjacent earth dropping wheels 110 in a positional relationship such that the outer peripheries of the rotational loci of the protrusions of the wheel main body 116 overlap each other when viewed from the side. Adjacent dropping wheels 110 position the plurality of wheel bodies 116 differently from each other in the axial direction of the drive shaft 115 so as not to interfere with the protrusions of the wheel bodies 116 .

The three dropping wheels 110 receive transmission of power from the engine 10 and are driven rotationally by receiving transmission of the rotational driving force taken out from the conveyor 7 which is driven. The drive shaft 115 of the three soil dropping wheels 110 protrudes from the right soil dropping frame 111 toward the right, and the protruding part of the drive shaft 115 to the right for power transmission Sprockets, etc. are installed.

As shown in Fig. 10, the drive shaft 115 of the third dropping wheel 110C includes an input sprocket 118a for receiving transmission of the rotational driving force taken out from the conveyor 7, and a second dropping wheel. An output sprocket 118b for transmitting rotational power to the drive shaft 115 of 110B is provided. On the drive shaft 115 of the second dropping wheel 110B, the input sprocket 119a that receives the winding of the chain together with the output sprocket 118b, and on the drive shaft 115 of the first dropping wheel 110A An output sprocket 119b for transmitting rotational power is installed. An input sprocket 120 that receives winding of the chain together with an output sprocket 119b is attached to the drive shaft 115 of the first dropping wheel 110A.

In the soil dropping device 27 having the above configuration, the dropped tip 2a receives the action of the protrusions of the wheel main body 116 from the three rotating soil dropping wheels 110. As a result, the soil is transported toward the rear conveyor 7 while being dropped. Here, the blade-shaped portion 2a that has fallen to the soil dropping device 27 is formed by the left and right soil dropping frames 111 and the front wall 112, and the soil dropping wheel ( 110) While receiving without falling from the top to the outside, the soil dropping action and conveying action by the soil dropping wheel 110 are surely received. Soil and the like that have fallen from the head end 2a fall and are discharged to the pavement.

[conveyor]

The conveyor 7 is a device that receives the onion 2 conveyed by the pull-out conveying device 24 and conveys it backward upward (rearwardly inclined upward). In the vegetable harvester 1, the conveyor 7 receives the stem portion 2a from which the leaf portion 2b has been cut by the leaf cutting device 26 from the dropping device 27, and (2a) is conveyed backwards and upwards.

The conveyor 7 is installed on the rear side of the soil dropping device 27, and is provided so as to form a continuous conveyance path with the same width as the conveyance path of the lower diameter portion 2a in the soil dropping device 27. there is. The conveyor 7 forms a conveyance path from the rear side of the dropping device 27 to the upper side of the rear slope. The inclination angle of the transport path of the conveyor 7 with respect to the horizontal direction is about the same as that of the pull-out conveyance device 24, for example. The conveyor 7 extends backwards and upwards so as to locate the conveyance start end on the rear side of the soil dropping device 27 and the conveyance end end on the right side of the driver's seat 13 .

The conveyor 7 is a bar conveyor having a plurality of bars at predetermined intervals with the horizontal direction as the stretching direction. The conveyor 7 has a straight bar-shaped bar 121 as a plurality of bars and a projection bar 123 having a plurality of projections 122 . A plurality of protruding bars 123 are formed for every predetermined number of bars 121 in the circumferential direction of the conveyor 7 . The protrusion 122 has a substantially elongated triangular shape when viewed from the side, and protrudes in a direction substantially perpendicular to the conveying surface of the conveyor 7 . In the protruding bar 123, the protrusions 122 are provided at a plurality of points (for example, six points) at predetermined intervals in the axial direction of the protruding bar 123.

Both ends of the bar 121 and the protruding bar 123 are fixed to the endless chains 126 provided on both the left and right sides of the conveyor 7, and are installed in a suspended state between the left and right chains 126. . The chains 126 are arranged in chain cases 125 provided on both left and right sides of the conveyor 7 . The left and right chain cases 125 constitute the left and right side wall portions of the conveyor 7 . Above the left and right chain cases 125, side plates 130 protruding upward from the conveying surface of the conveyor 7 are provided over the entire conveying route of the conveyor 7. The side plate 130 prevents the edge portion 2a conveyed by the conveyor 7 from falling to the side. To the front side of the left and right chain cases 125, earth dropping frames 111 each forming the left and right side wall portions of the earth dropping device 27 are connected.

The conveyor 7 includes a conveyor input shaft 127 installed at the rear end of the conveyance located at the rear upper side and a conveyor driven shaft 128 installed at the beginning end of the conveyance located at the front lower side. The conveyor input shaft 127 rotates by receiving transmission of rotational power from the engine 10. At the right end of the conveyor input shaft 127, an input for receiving transmission of rotational power from the engine 10 is provided. A sprocket 129 is fixedly installed (see Fig. 10).

As shown in FIG. 10 , the rotational power of the conveyor input shaft 127 is transmitted to the conveyor driven shaft 128 via the left and right chains 126 supporting the plurality of bars 121 and the protruding bars 123. do. For this reason, the sprockets 131 and 132 which receive winding of the chain 126 on either side are fixed to each shaft of the conveyor input shaft 127 and the conveyor driven shaft 128.

In the conveyor 7 having such a configuration, the bar 121 and the protruding bar 123 move along with the rotation of the left and right chains 126, so that the diameter portion 2a moves along the protruding bar 123. While being caught by a plurality of protrusions 122 of the, it is conveyed upwards at a backward inclination.

The conveyor driven shaft 128 of the conveyor 7 is positioned behind the third dropping wheel 110C. The conveyor 7 is installed so that the rotational locus of the tip of the projection 122 around the axis of the conveyor driven shaft 128 is adjacent to the rotational locus of the third dropping wheel 110C. With this configuration, a continuous conveying surface is formed from the top of the third dropping wheel 110C to the conveying start end of the conveyor 7, and the diameter portion 2a moves from the dropping device 27 to the conveyor 7 ) followed by

A comb-shaped guiding member 135 is provided at a portion of the transfer from the dropping device 27 to the conveyor 7 (see Figs. 5 and 13). The comb-shaped guide member 135 is a plate-like member having a comb-shaped outer shape, and is installed so as to follow the conveying surface from the dropping device 27 to the conveyor 7 . The comb-shaped guide member 135, when viewed from the top, has a relationship between the third dropping wheel 110C and the conveyor 7 in a state where the plurality of protrusions 122 are positioned on the front side of the conveyor driven shaft 128. It has comb-like shapes on both front and back sides so as to fill in the gap between them. The comb-shaped guides 135 are installed in a fixed state with respect to the left and right soil dropping frames 111 and the like. By means of the comb-shaped guide member 135, the round diameter portion 2a conveyed in the transfer portion from the dropping device 27 to the conveyor 7 is conveyed smoothly without falling.

[Auxiliary Conveying Device]

Above the soil dropping device 27, an auxiliary conveying device 140 is provided. The auxiliary conveying device 140 is configured to give a conveying action to the conveyor 7 to the diameter portion 2a sent from the dropping device 27 to the conveyor 7 . The auxiliary conveyance device 140 has an auxiliary conveyance wheel 141 as a main body of the device.

The auxiliary conveyance wheel 141 is provided above the handing over portion between the third dropping wheel 110C and the conveyance start end of the conveyor 7 . The auxiliary transport wheel 141 is a rotating body with the left-right direction as the direction of the rotational axis, and functions as a scraping wheel that scrapes the diameter portion 2a from the earth dropping device 27 to the conveyor 7.

The auxiliary conveying wheel 141 has a drive shaft 142 that rotates by receiving power from the engine 10, and a plurality of star wheel-shaped wheel bodies 143 formed by radially arranging rod-shaped protrusions. , It has the same configuration as the soil dropping wheel 110. The auxiliary conveyance wheel 141 is provided so as to be rotationally driven in a direction in which the inner diameter portion 2a is conveyed rearward by a plurality of protrusions of the wheel body 143 .

The auxiliary conveying wheel 141 causes the protrusion to act from the upper side on the cutting edge portion 2a carried over to the conveyor 7 from the third dropping wheel 110C, thereby moving the cutting edge portion 2a off the conveyor 7. send to the side Therefore, the direction of rotation of the auxiliary conveyance wheel 141 driven to rotate is opposite to that of the dropping wheel 110, and is counterclockwise (left rotation direction) when viewed from the left side.

The auxiliary transport wheel 141 extends forwardly from the outside of the chain case 125 on the left side of the conveyor 7, and the chain case 145 on the right side of the conveyor 7 extends forward from the outside of the chain case 125. By the rotation support arm 146 extended to the side, it is rotatably supported at both left and right ends. The chain case 145 supports the rear end so as to be able to rotate with respect to the left chain case 125, and supports the left end of the drive shaft 142 of the auxiliary conveyance wheel 141 at the front end. The rotation support arm 146 supports the rear end so as to be able to rotate with respect to the right chain case 125, and supports the right end of the drive shaft 142 of the auxiliary conveyance wheel 141 at the front end (FIG. 14). Reference).

The auxiliary conveying device 140 is configured to be driven by power taken out from the conveyor 7 . In short, the auxiliary conveyance device 140 rotationally drives the auxiliary conveyance wheel 141 by receiving transmission of power from the conveyor 7 .

As shown in FIG. 10 , the power of the conveyor 7 is taken out as rotational power by the power take-out shaft 151, and by the chain transmission mechanism 152 installed in the chain case 145, the auxiliary conveyance wheel 141 ) is transmitted to the drive shaft 142 of the The right side of the power take-off shaft 151 is placed inside the chain case 125 on the left side, and the input sprocket 153 fixed to the right end of the power take-off shaft 151 is attached to the chain 126 inside the chain case 125. ) are aligned.

The input sprocket 153 is engaged with the chain 126 from the lower side of the conveyor 7, on the side opposite to the conveying surface side of the inner diameter portion 2a, that is, from the outer circumferential side on the lower side of the chain 126. In this way, the power of the auxiliary conveying wheel 141 is taken out from the midway portion of the conveyor 7 in a reverse rotation with respect to the rotation direction of the chain 126 . The power take-out shaft 151 has an axis aligned with the axis of rotation of the chain case 145 .

As shown in FIG. 10 , the chain transmission mechanism 152 is fixed to the left end of the driving sprocket 156 fixed to the left end of the power take-off shaft 151 and the drive shaft 142 of the auxiliary conveyance wheel 141. It has driven sprockets 157 installed and an endless chain 158 wound around these sprockets. In this configuration, the rotation of the power take-off shaft 151 accompanying the rotation of the chain 126 on the left side of the conveyor 7 causes the drive sprocket 156 to rotate integrally with the power take-off shaft 151. And, via the chain 158 and the driven sprocket 157, the drive shaft 142 rotates and the auxiliary conveyance wheel 141 is rotationally driven.

In the configuration provided with the auxiliary conveying device 140 as described above, the cutting edge portion 2a continues from the third dropping wheel 110C of the dropping device 27 to the conveying start end of the conveyor 7 ) is pushed rearward and guided to the conveyor 7 by receiving the action of the projection of the auxiliary conveying wheel 141. When carried over to the conveyor 7, the diameter portion 2a is sent out to the conveyor 7 in a way that it is sandwiched by the third dropping wheel 110C and the auxiliary conveying wheel 141. Here, it is sent out to the conveyor 7 by the edge portion 2a on the comb-shaped guide member 135 or the auxiliary conveying wheel 141.

The earth dropping device 27, the conveyor 7, and the auxiliary transport device 140 having the above structures are installed between the left and right crawler traveling devices 4 in the left and right directions. In addition, the pair of left and right crawler traveling devices 4 are located within the harvesting range of the onion 2 by the pulling and conveying device 24 in the body width direction (left and right direction).

As shown in FIG. 4 , in the vegetable harvester 1, the harvesting range of the onion 2 is, in the left-right direction, the tip of the dividing unit 60 attached to the dividing device 21 at the left end, and the right end It becomes the width (harvesting width R1) between the tip parts of the dividing body 60 attached to the dividing device 21. In the left-right direction, the left-right width P1 (see FIG. 9 ) of the left and right crawler traveling devices 4 falls within the range of the harvesting width R1, which is the width corresponding to the harvesting range of the onion 2. Here, the width P1 of the left and right crawler traveling devices 4 is the distance between the left outer edge of the left crawler traveling device 4 and the right outer edge of the right crawler traveling device 4. is the width Moreover, the harvest width R1 substantially coincides with the digging width by the digging device 23.

The vegetable harvester 1 having such a configuration of the arrangement of the crawler traveling device 4 has a guide member 161 for guiding the cutting part 2a falling from the foliage cutting device 26 to the dropping device 27. ) are provided on both the left and right sides. The guide member 161, in the left-right direction, removes the leaf cutting device 26 at a position outside the range of the width of the earth dropping device 27 and drops the cutting edge portion 2a to the earth dropping device ( 27) is a device for guiding.

The cutting position of the foliage portion 2b by the foliage cutting device 26 constituting the conveying and cutting unit configuration 80 on both the left and right sides is the width of the dropping device 27 (T1) (Fig. 9), it is an outside position in the left-right direction. That is, in the left-right direction, the cutting position of the foliage part 2b by the foliage cutting device 26 on the left side is located on the left and right outside (left) of the left end position of the width T1 of the dropping device, and The cutting position of the foliage portion 2b by the foliage cutting device 26 is located on the left and right sides (right side) of the right end position of the width T1 of the dropping device. Further, the earth dropping device width T1 is the width between the left and right outer side surfaces of the left and right earth dropping frames 111 . The earth dropping device width T1 is the same as or substantially the same as the device width of the conveyor 7 .

In this way, in the configuration in which the cutting position of the foliage portion 2b by the left and right foliage cutting devices 26 is located on the left and right outside of the earth dropping device width T1, the guide member 161 guides both left and right sides. The stem portion 2a falling from the foliage cutting device 26 is guided to the dropping device 27. Therefore, the guide member 161 is provided with respect to each of the conveyance cutting unit structure 80 on both left and right sides.

The guide member 161 guides the left and right inside from the left and right outside so as to receive the head portion 2a that has fallen from the lower side of the left and right foliage cutting devices 26 and guide it to the earth dropping device 27 located in the left and right middle portions. It is installed in an inclined shape so as to form a guide surface, which is a slope that goes down toward the direction.

As shown in FIG. 9 , the guide member 161 includes a guide surface portion 162 constituting a guide surface, a rear wall portion 163 provided along the rear edge of the guide surface portion 162, and the left and right sides of the guide surface portion 162. It is configured to include a side wall portion 164 provided along the outer edge portion. The guiding surface portion 162 has a length covering a range in which the leaf portion 2a falling by the cutting of the leaf portion 2b by the leaf cutting device 26 is received in the left-right and front-back directions. The rear wall portion 163 is a vertical vertical surface portion, and controls the fall of the neck portion 2a from the top of the guide surface portion 162 to the rear side. The side wall portion 164 is a vertical vertical surface portion, and controls the fall of the diameter portion 2a from the guide surface portion 162 to the left and right outside.

The left and right guide members 161 are installed in a supported state with respect to the left and right soil dropping frames 111 via support arms 165, respectively. The support arm 165 is fixing the lower end side to the soil dropping frame 111 while fixing the upper end side to the side wall portion 164 .

As described above, according to the configuration provided with the left and right guide members 161, as shown in FIG. ), slides on the guide surface (the upper surface of the guide surface portion 162), and flows into the soil dropping device 27 (see arrow V1 in FIG. 9). In addition, the stem portion 2a falling from the foliage cutting device 26 constituting the central conveying and cutting unit configuration 80 directly falls onto the soil dropping device 27 .

[receptor]

The accommodating part 8 is provided on the rear side of the conveyor 7 . The accommodating portion 8 is configured to drop the round diameter portion 2a from the conveying end of the conveyor 7 and house it in a harvest net 170 as a collection container (see FIG. 5 ). Harvest net 170 is a harvest bag formed in a bag shape by the net.

The receiving portion 8 includes an inlet portion 171 into which the head portion 2a flowing down from the end of the conveyor 7 is input, and two left and right outlet portions 172 to which the harvest net 170 is mounted. and a guide part 173 for guiding the inlet part 2a thrown into the inlet part 171 to either the right or left outlet part 172.

The guide portion 173 has a guide plate installed so as to be capable of switching operation so as to switch the outlet portion 172 of the guide point, and by switching the guide plate, the guide portion 2a is moved to either the right or left outlet portion 172. It is designed to guide you. The outlet part 172 is comprised in the shape of a square cylinder so that it may form a rectangular shape in planar view. Harvesting net 170 is set in a state supported by support rods 174 provided on both left and right sides of outlet portion 172, with the outlet portion 172 positioned in the opening portion with the opening side upward (FIG. 5). Reference). The support bar 174 extends horizontally from the body frame 9 side toward the rear.

Below the outlet part 172, the support 176 which supports the set harvest net 170 from below is provided. The support base 176 has a horizontal support surface 176a. The support base 176 is installed so as to protrude horizontally from the body frame 9 toward the rear through a support member. The support base 176 has a horizontal support surface portion 177 constituting the support surface 176a, and side wall portions 178 provided on both left and right sides of the support surface portion 177.

In the accommodating portion 8 having such a configuration, the diameter portion 2a that is conveyed rearward and upward by the conveyor 7 (see arrow W1 in Fig. 5) and falls backward from the end of the conveyance of the conveyor 7 (see Fig. 5, arrow W2) is introduced from the inlet portion 171, falls while being guided by the guide portion 173, passes through the left and right outlet portions 172, and enters the harvest net 170 going to be accepted The harvest net 170 filled with the neck portion 2a is exchanged appropriately. In addition, as a collection container, instead of the harvest net 170, a container may be placed on the support stand 176, and the neck portion 2a discharged from the outlet portion 172 may be accommodated in the container.

[Power Transmission Configuration]

A power transmission configuration in the vegetable harvester 1 according to the present embodiment will be described with reference to FIGS. 10 and 11 . 11 is a partially enlarged view of FIG. 10 and is a diagram showing the power transmission configuration to the transport cutting unit configuration 80. As shown in FIG.

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

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

Regarding the travel drive system, rotational power of the counter shaft 203 is transmitted to the input shaft 11a 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 a travel/work clutch lever. 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 a transmission mechanism included in the transmission 11 . Drive wheels 4a of the crawler traveling device 4 are attached to both ends of the axle shaft 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 part input shaft 208 installed in the left-right direction as the axial direction. The second belt transmission mechanism 207 is provided with a work clutch 209 operated by a travel/work clutch lever.

Between the left end of the work unit input shaft 208 and the conveyor input shaft 127, an output sprocket 213 fixed to the left end of the work unit input shaft 208 and an input fixed to the right end of the conveyor input shaft 127 A third chain transmission mechanism 210 including sprockets 129 and chains 214 wound on these sprockets is provided. The rotational power of the work part input shaft 208 is transmitted to the conveyor input shaft 127 by the third chain transmission mechanism 210 . The rotational driving force of the conveyor input shaft 127 is transmitted to the conveyor driven shaft 128 by a chain transmission mechanism including the left and right chains 126, and the conveyor 7 is driven.

The rotational power of the conveyor driven shaft 128 is transmitted to the driving shaft 115 of the third dropping wheel 110C by the chain transmission mechanism 211 including the input sprocket 118a. The rotational power of the driving shaft 115 of the third dropping wheel 110C is transmitted to the second dropping wheel 110B by a chain transmission mechanism including the output sprocket 118b, The rotational power of the wheel 110B is transmitted to the first dropping wheel 110A by a chain transmission mechanism including an output sprocket 119b. Further, the rotational power of the chain 126 on the left side of the conveyor 7 is taken out by the power take-out 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 work unit input shaft 208 is transmitted through a bevel gear 215 fixed to the right end of the work unit input shaft 208 and a bevel gear 216 meshed with the bevel gear 216 of the traveling body 3. It is transmitted to the working part transmission shaft 217 disposed along the front-back direction when viewed from the right side in plan view. The rotational power of the transmission shaft 217 of the working part is the power installed in the upright state via the bevel gear 218 fixed to the front end of the transmission shaft 217 of the working part and the bevel gear 231 meshing therewith. It is transmitted to the transmission shaft 230 (see Fig. 22). The rotational power of the power transmission shaft 230 is disposed in the left-right direction of the aircraft as the axial direction via a bevel gear 232 fixed to the upper end of the power transmission shaft 230 and a bevel gear 219 meshing therewith is transmitted to the input shaft 220 of the working unit.

As shown in FIG. 11 , the rotational power of the work part input shaft 220 is transmitted through a worm gear 222 comprising a worm 223 installed on the work part input shaft 220 and a worm wheel 224 meshing therewith. Then, among the left and right conveyance input shafts 89 in each conveyance and cutting unit structure 80, the conveyance input shaft 89B of the belt holding member 82 on the left side is transmitted. The rotational power of the conveyance input shaft 89B is transmitted through a drive gear 225 fixed near the lower end of the conveyance input shaft 89B, two intermediate gears 226, and a driven gear 227, and the belt clamping body on the right side It is transmitted to the conveyance input shaft 89A of 82. The driven gear 227 is fixedly installed in the vicinity of the lower end of the conveyance input shaft 89A.

The pulling and conveying device 24, the shoulder alignment device 25, and the leaf cutting device 26 are driven by the rotational power of the conveying input shaft 89 of each of the left and right belt grippers 82. A driving gear 225, two intermediate gears 226, and a driven gear 227 are accommodated in a gear case 228 installed between the lower ends of the left and right conveying input shaft cases 90 (see Fig. 7). .

The three gear cases 228 corresponding to each of the three pull-out conveyance devices 24 are fixed to the case support plate 233 fixed to the rear transverse frame portion 31 of the work portion frame 30 by fixing tools such as bolts. It is supported in a fixed state by The case support plate 233 is a rectangular plate-shaped member having the left-right direction as the longitudinal direction, and is provided in the left-right intermediate portion of the rear transverse frame portion 31 . The case support plate 233 is installed in an inclined shape so that the side of the support surface supporting the gear case 228 faces upward from the rear transverse frame portion 31 when viewed from the side, there is. In this way, the three conveying and cutting unit configurations 80 fix the gear case 228 to the case support plate 233 fixed to the rear transverse frame portion 31, so that the rear part of the drawing and conveying device 24 is supported by the working part frame 30 via the case support plate 233 .

Returning to FIG. 10 , the rotational power of the work unit input shaft 220 is driven by the fourth chain transmission mechanism 239 including the sprocket 229 fixed to the right end of the work unit input shaft 220, and the digging drive shaft ( 78) is passed on. The fourth chain transmission mechanism 239 includes a sprocket 229, a sprocket 221 fixed to the right end of the digging drive shaft 78, and a chain 199 wound around these sprockets. The digging device 23 is driven by the rotational power of the digging drive shaft 78 . In addition, the rotational power of the digging drive shaft 78 is transmitted to the preprocessing drive shaft 55 via the preprocessing transmission shaft 234 arranged in a forward-downward inclined shape so as to follow the front-rear direction when viewed from above. At the rear end of the preprocessing transmission shaft 234, a bevel gear 236 meshing with a bevel gear 235 installed on the digging drive shaft 78 is fixedly installed. At the front end of the preprocessing transmission shaft 234, a bevel gear 238 meshed with a bevel gear 237 provided at the right end of the preprocessing drive shaft 55 is provided. By the rotational power of the preprocessing drive shaft 55, the 6-row sorting device 21 and the scraping device 22 are driven.

[Foliar ejection composition]

The vegetable harvester 1 has a foliage discharging configuration for discharging the foliage portion 2b removed from the stem portion 2a by the foliage cutting device 26 to a predetermined location.

The vegetable harvester 1 is configured for discharging the foliage portion 2b generated by the transport cutting unit configuration 80 on both the left and right sides, and cuts the onion 2 transported by the left and right outer pulling and transporting devices 24 and a discharge guide device 240 which is a first germ leaf device for discharging the deciduous stem and leaf portion 2b.

As shown in FIG. 7 , the release guide device 240 is installed at the rear end of the drawing and conveying device 24, which is the end of the transport. The ejection guide device 240 has a pair of upper and lower ejection guide bodies 241 and a ejection wheel 242 . The discharge guide device 240 is provided with respect to the rear end of the belt gripper 82 mainly located on the left and right outer sides among the left and right belt grippers 82 constituting the drawing and conveying device 24 . The ejection guide devices 240 provided with respect to the left and right outer drawing and conveying devices 24 are configured symmetrically left and right.

The emission guide body 241 is constituted by a rod-like member having a predetermined curved shape. The discharge guide member 241 has a shape curved in an arc shape so as to follow the outer shape of the drive pulley 84 located at the rear end of the belt gripper 82 . The left and right inner ends of the discharge guide member 241 extend forward between the left and right belt grippers 82, and are positioned in front and below the drive pulley 84 of the left and right inner belt grippers 82. , is fixed to a predetermined frame portion constituting the left and right inner belt holding bodies 82 via support members or the like.

The release guide member 241 passes between the left and right drive pulleys 84 and 84 from the fixing portion to the left and right inner belt grippers 82, and the transport belt of the left and right outer belt grippers 82 It turns left and right outside so as to follow the rotation direction of 83, extends an arc-shaped portion that follows the outer shape of the drive pulley 84, and directs the front end to the left and right outside. 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 conveyance input shaft 89, and are supported at predetermined intervals.

The release wheel 242 is provided between the upper and lower release guide members 241 in the axial direction of the conveyance input shaft 89 on the lower side of the left and right outer belt gripping members 82 . The discharge wheel 242 is located on the same axis as the conveyance input shaft 89, and is provided so as to rotate in the same direction in conjunction with the driving pulley 84 of the belt gripper 82.

The discharge wheel 242 is a part acting on the lateral leaf portion 2b, and has a plurality of projections protruding outward in the radial direction, and has a so-called star wheel shape (see Fig. 13). The discharge wheel 242 is provided so that the trajectory of the distal end of the protruding portion due to rotation substantially coincides with the circular arc-shaped curved portion of the discharge guide body 241 when viewed in the axial direction of the conveyance input shaft 89 .

According to the release guide device 240, the leaf portion 2b cut by the leaf cutting device 26 and held by the drawing and conveying device 24 is guided from the proximal end side of the upper and lower release guide members 241. It is guided to the inner circumferential side of the sieve 241. The lateral leaf portion 2b guided toward the inner circumference of the release guide member 241 moves along the curved shape of the release guide member 241 by the action of the release wheel 242, and the left and right sides of the release guide member 241 It is discharged toward the left and right outside from between the outer end and the discharge wheel 242 (see Fig. 4, arrow J1).

The lateral leaf portions 2b released from the left and right discharge guide devices 240 are guided by guide devices (not shown) in the space portions 260 formed on the left and right outer sides of the crawler traveling device 4, and the crawler traveling device 4 ) is discharged onto the upper surface 4e. In addition, the upper surface 4e of the crawler traveling device 4 is the upper surface of the inclined portion of the forward descent between the driving wheel 4a and the front driven wheel 4b of the caterpillar 4d. The space portion 260, on the left and right outer sides of the front of the crawler traveling device 4, is the first frame portion 33a, the fifth frame portion 33e, and the fourth frame portion 33d of the working portion frame 30. ), and an approximately rectangular space portion in plan view surrounded by the left and right ends of the rear transverse frame portion 31. The foliage portion 2b dropped on the upper surface 4e of the crawler traveling device 4 is sent forward by the rotation of the caterpillar 4d in the crawler traveling device 4 traveling on the pavement, and the crawler traveling device 4 travels on the pavement. It falls on the front side of (4) and is stepped on by the crawler traveling device (4) along with the forward movement of the body.

The vegetable harvester 1 is configured for discharging the foliage portion 2b generated in the central conveying and cutting unit configuration 80, and cut from the onion 2 conveyed by the left and right center drawing and conveying devices 24 An embryo transport device 250 is provided to discharge the lateral leaf portion 2b to the right side, which is one side of the left and right sides. The leaf conveying device 250 is installed so that the leaf portion 2b is discharged on the side opposite to the positioning side (left side) of the operation unit 5 relative to the conveyor 7 in the left-right direction.

As shown in FIG. 4 , the backing conveying device 250 is installed on the rear side of the drawing conveying device 24 at the center of the left and right sides. The backing conveying device 250 is constituted as a belt conveying unit, and has a pair of endless backing belts 251 that rotate backward on the sides facing each other. The backing belt 251 is wound around a drive pulley 252 provided at the start end of the backing conveyance device 250 and a driven pulley 253 installed at the end end of the backing conveyance device 250 (see Fig. 10). ). In this way, the backing transport device 250 includes a pair of left and right belt holding members 250A in which the backing belt 251 is wound around the drive pulley 252 and the driven pulley 253, and the left and right belt holding members ( 250A) is configured to sandwich and convey the foliage portion 2b between them. Also, about the backing belt 251, a plurality of tension pulleys and the like are provided.

The drive pulley 252 is provided with respect to the conveyance input shaft 89, and is rotationally driven together with the drive pulley 84 in accordance with the rotation of the conveyance input shaft 89 (see Fig. 10). The drive pulley 252 is installed below the drive pulley 84 . In short, the backing conveyance device 250 has its conveyance start end positioned below the conveyance end portion of the drawing conveyance device 24 .

The back leaf conveying device 250 is installed inclined so that the conveying direction of the lateral leaf portion 2b is directed from the conveying terminal end of the drawing conveying device 24 to the rear right inclined upward. When viewed from the side, in the outer leaf conveying device 250, the inclination angle of the elongation direction, which is the conveying direction of the lateral leaf portion 2b, with respect to the horizontal direction is set to the same extent as the inclination angle of the drawing conveying device 24 (Fig. see 5).

According to the foliage conveying device 250 having the configuration described above, the lateral leaf portion 2b cut by the foliage cutting device 26 and held by the drawing conveying device 24 is , and is conveyed upward on the rear right inclination in a state of being held between the left and right pair of backing belts 251. The lateral leaf portion 2b transported by the late stage conveying device 250 is released from the terminal end of the late stage conveying device 250 (see arrow J2 in FIG. 4 ).

In this way, the lateral leaf portion 2b released by the intermediate leaf transport device 250 installed with respect to the center pull-out transport device 24 is guided by the leaf shooter 263 as a guide portion of the crawler traveling device 4 on the right side. It is guided to fall on the upper surface 4e.

The back shooter 263 transfers the leaf portion 2b, which is released from the rear end of the central pull-out transport device 24 toward the rear inclined upper direction by the back leaf transport device 250, to the crawler traveling device 4 on the right side. It is received at a position further left and right inside (left side), and the side leaf portion 2b is guided left and right outside (right side) so that the leaf portion 2b is loaded on the crawler traveling device 4 on the right side and dropped. The back shooter 263 is configured to include a guide surface portion 275 formed in a descending inclination shape across the right side, and a lower vertical surface portion 276 continuous to the lower side of the guide surface portion 275 (FIG. 13). Reference). The guide surface portion 275 is made of, for example, a metal member, and the lower vertical surface portion 276 is made of, for example, an elastic member such as a rubber sheet.

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 within which the leaf portion 2b is released from the leaf conveyance device 250 installed to cover The guide surface portion 275 has a side wall portion 277 formed around the periphery other than the lower edge thereof, and is configured as a tray-shaped guide plate. The side wall portion 277 suppresses the lateral leaf portion 2b received by the guide surface portion 275 from scattering around the guide surface portion 275 . The lower vertical surface portion 276 is a substantially rectangular plate-shaped portion in a vertical direction with the left-right direction as the plate thickness direction, and is attached to the lower side of the guide surface portion 275 by means of a fixture and is installed downward. The back shooter 263 is bolted to the lower frame portion of the rear end of the back end conveyance device 250 via a support stay 278 attached to a cutout 275s formed on the front upper side of the guide surface portion 275. It is fixed and supported by fixtures such as the back.

According to the configuration provided with the dorsal leaf shooter 263, the lateral leaf portion 2b released from the dorsal leaf transport device 250 is received on the guide surface portion 275 and slides while being guided by the guide surface portion 275. It leaves and falls on the upper surface 4e of the crawler traveling device 4 on the right side. As described above, the lateral leaf portion 2b that has fallen on the upper surface 4e of the crawler traveling device 4 is stepped on by the crawler traveling device 4 as the machine moves forward.

The operation of the vegetable harvester 1 having the above structure will be described. The vegetable harvester 1 harvests 6 sets of onions 2 while advancing the body along the breakfast line in the packaging of continuous sets. At the time of harvesting work of the onion 2 by the vegetable harvester 1, the body is operated by operating the operation box 12 of the operation unit 5.

While moving forward, the vegetable harvester 1 first lifts the foliar portion 2b of the onion 2 in a state where it has fallen on the field upward by the sorting device 21 to sort each group, and the scraping device 22 ), the foliage portion 2b is scraped and passed to the drawing conveyance device 24. The scraping device 22 functions as one set in a pair, and scrapes the foliage 2b for two sets with one set. The vegetable harvester 1 loosens the soil below the onion 2 by the digging device 23 at the time of handing the foliage portion 2b to the pulling and conveying device 24 by the scraping device 22. pay

The pull-out conveyance device 24 takes in two sets of leaves and leaves 2b at the front end, and carries them between and conveyed by the conveyor belts 83 on either side. Here, a certain level of height is required for the conveying inlet height K1 (see FIG. 7 ), which is the height of the front end of the pull-out conveying device 24 with respect to the ground surface 320 of the pavement. In relation to the diameter of the driven pulley 85, the pitch between rows of onions 2, etc., if the conveyance inlet height K1 is low, the inclination of the foliar portion 2b increases, so that the foliar portion 2b breaks off, etc. problem arises, and good retractability is not obtained with respect to the leaf part 2b.

The pulling and conveying device 24 pinches the stem and leaf portion 2b to pull out the onion 2 from the package and conveys it backwards and upwards. Accompanying the transport in the pull-out transport device 24, the height position of the neck portion 2a is aligned by the shoulder alignment device 25. The onion 2 whose height position is aligned is subjected to the cutting of the leaf portion 2b by the leaf cutting device 26 at a position where the leaf portion 2b is left at a predetermined length with respect to the stem portion 2a.

As the foliage cutting device 26 cuts the foliage portion 2b, the stem portion 2a falls and lands on the dropping device 27. Here, the lower neck portions 2a falling from the shoulder aligning device 25 in the left and right conveying and cutting unit configurations 80 are guided by the guide member 161 and fall onto the earth dropping device 27, respectively. do. The diameter portion 2a that has fallen on the soil dropping device 27 is conveyed backward while receiving the action of soil dropping by the soil dropping wheel 110, and is conveyed by the action of the auxiliary conveying device 140 to the conveyor. It is sent to (7) and conveyed backwards and upwards by conveyor (7). The round-diameter portion 2a conveyed by the conveyor 7 is put into the inlet portion 171 of the accommodating portion 8 from the conveying end of the conveyor 7, and is accommodated in the harvest net 170. In addition, during the harvesting operation by the vegetable harvester 1, an auxiliary worker who exchanges the harvest net 170 or the like follows the rear of the body.

As described above, the vegetable harvester 1 includes the traveling body 3 and the harvesting work unit 6 provided on the front side of the traveling body 3, and the crawler traveling devices 4 on the left and right move the traveling body ( The onion 2 is harvested by the harvesting unit 6 while advancing the 3). In the vegetable harvester 1, the harvesting work unit 6 is installed so as to be able to move up and down relative to the traveling body 3. In addition, the harvesting work unit 6 is installed so as to be able to rotate horizontally with respect to the traveling body 3, that is, to be side-open.

[Elevating Structure of Harvesting Work Department]

The elevating structure of the harvesting work section 6 will be described. The harvesting work unit 6 is installed so as to move up and down together with the conveyor 7 with respect to the body frame 9 of the traveling body 3. The conveyor 7 is installed so as to rotate (lift) up and down with the left and right directions as the rotation axis directions with respect to the body frame 9 by two hydraulic cylinders, elevating cylinders 330 installed on both the left and right sides of the conveyor 7. has been The left and right lifting cylinders 330 are installed symmetrically, and expand and contract in synchronization.

The elevating cylinder 330 is installed between the body frame 9 and a predetermined frame member installed on the conveyor 7 in a state in which it is erected forward and backward. By the expansion and contraction operation of the elevating cylinder 330, the conveyor 7, the working part frame 30, and various devices of the harvesting working part 6 supported by the working part frame 30 are lifted and rotated integrally. The elevating cylinder 330 is provided so that the expansion/contraction direction in a planar view follows the front-rear direction, with the bottom side being the rear side and the rod side being the front side.

The elevating cylinder 330 connects the rear end of the cylinder tube with respect to the bracket 331 after being installed in the body frame 9 by means of the rear shaft support part 330a so that the left and right direction is the rotational axis direction, and is rotatably connected. The rear bracket 331 is installed in a fixed state on a mount portion 9b extending left and right outward from the side frame 9a constituting the body frame 9. The side frame 9a is located on the left and right outer sides of the lower part of the chain case 125 on the left and right sides of the conveyor 7, and extends in the front and rear directions when viewed from a plan view, and the rear portion is a front and rear horizontal frame portion, The whole is made into a forward descending inclined frame part. The mount portion 9b is a support frame portion that extends left and right from the rear of the side frame 9a and is constituted by a rectangular steel tubular member or the like.

The elevating cylinder 330 moves the front end of the piston rod to the front shaft support 330b with respect to the front bracket 332 installed on the conveyor horizontal frame 340 that is horizontally stretched above the front end of the conveyor 7. By doing so, the left and right directions are rotatably connected in the direction of the rotation axis. The conveyor transverse frame 340 is a straight frame portion extending in the left-right direction, and is constituted by a rectangular steel tubular member. Conveyor transverse frame 340 is attached to the front end of side plate 130 on either side of conveyor 7 with support plate 333 interposed therebetween. The conveyor transverse frame 340 is installed parallel to the rear transverse frame portion 31 constituting the work section frame 30, and is located near the rear of the rear transverse frame portion 31. The front brackets 332 are provided on both left and right sides of the conveyor transverse frame 340 so as to protrude from the conveyor transverse frame 340 to the rear and upper side.

The conveyor 7 is installed so as to rotate with respect to the body frame 9 centered on a rotation support portion 335 formed coaxially with a conveyor input shaft 127 provided at the end of the conveyance. The rotation support part 335 is formed between the left and right vertical frame parts 336 installed upright on both left and right sides of the longitudinal end of the conveyor 7 at the rear of the body frame 9. The soil dropping device 27 installed in such a way that the left and right sidewalls of the conveying start end of the conveyor 7 are extended forward and is included in an integral device part that moves up and down by the extension and contraction operation of the elevating cylinder 330. .

Regarding the arrangement of the left and right lifting cylinders 330, the lifting cylinder 330 as an actuator for lifting the harvesting work unit 6 relative to the traveling body 3 is installed on the traveling body 3 side. That is, as will be described later, the elevating cylinder 330 is installed so as to remain on the traveling body 3 side when the harvesting work unit 6 is side-opened.

In the present embodiment, the left and right elevating cylinders 330 are installed in a state in which the mount portion 9b extending from the body frame 9, which is a frame supporting the conveyor 7, and the conveyor transverse frame 340 are connected to each other has been That is, each elevating cylinder 330 has its rear end supported by the bracket 331 after being installed on the mount portion 9b, and its front end supported by the front bracket 332 installed on the conveyor transverse frame 340. installed state.

Regarding the configuration including the conveyor 7 and the dropping device 27 installed so as to be able to rotate with respect to the body frame 9, the harvesting work unit 6 has two left and right lower frame supports 350 and The working part frame 30 is supported by a total of three frame support parts of the upper frame support part 360 at one position (see Fig. 9). Therefore, a structure including a conveyor 7 and a soil dropping device 27 is provided in a part that rotates with respect to the body frame 9 centering on the rotation support part 335 by the expansion and contraction operation of the left and right lifting cylinders 330. Harvesting operation 6 supported against is included.

That is, a crop processing unit capable of lifting operation with respect to the body frame 9 is constituted by the conveyor 7, the dropping device 27, and the harvesting work section 6. By rotation of the crop processing unit centered on the rotation support unit 335, the pulling position of the onion 2 with respect to the ground by the vegetable harvester 1 is adjusted. 9 and 14, the state in which the crop processing unit was raised is shown.

[Frame Support]

The lower frame support part 350 and the upper frame support part 360 at two positions on the left and right will be described. These frame support portions have a common configuration in that they support a cylindrical support rod portion installed on the side of the working part frame 30 in a state where the central axis is the left-right direction while being vertically inserted.

The support structure by the left and right lower frame support parts 350 will be described with reference to FIGS. 9 and 15 to 17 . The support structure by the left and right lower frame support parts 350 is configured symmetrically. The left and right lower frame supports 350 are provided on the front side of the soil dropping device 27 . Specifically, the lower frame support portion 350 is provided at both left and right ends on the front side of the front wall portion 112 of the soil dropping device 27 . 15 and 16 show the lower frame support 350 on the left side.

In the work frame 30, as a part supported by the left and right lower frame support parts 350, a straight lower support rod part 370 extending in the left and right directions is provided. The lower support rod portion 370 is an elongated cylindrical portion having a circular cross-sectional shape. The lower support rod portion 370 is supported by the left and right support arms 371 that extend obliquely from the front transverse frame portion 32 constituting the work section frame 30 toward the rear and downward, and the front transverse It is provided in parallel with the frame part 32 (refer FIG. 6). The lower support bar portion 370 is fixed to the lower ends of the left and right support arms 371 by welding or the like.

The support arm 371 is a straight frame portion composed of rectangular steel tubular members. Between the upper and lower intermediate portions of the support arm 371 and the rear transverse frame portion 31, a straight support frame portion 372 is constructed. The support frame portion 372 is installed so as to be perpendicular to the support arm 371 when viewed from the side. The support frame part 372 is provided in parallel with the 5th frame part 33e so that it may overlap with the 5th frame part 33e when seen from the side.

The lower end of the left and right support arms 371 is connected to a site inside the left and right both ends with respect to the lower support bar 370 . The lower support bar portion 370 has left and right ends located outside the left and right sides of the connecting portion of the left and right support arms 371 as supported portions 370a for the lower frame support portion 350 . The supported portion 370a is a portion of the lower support rod portion 370 that is slightly reduced in diameter with respect to the left and right middle portions including the connecting portion of the support arm 371 .

The lower frame support portion 350 has a pedestal 351 supporting the supported portion 370a of the lower support rod portion 370 . The pedestal 351 is installed in a fixed state by welding or the like with respect to the dropping frame 111 or the front wall portion 112 of the conveyor 7 . The pedestal 351 has an upper surface portion as a receiving surface portion 352 formed in a forward descending inclined shape. The receiving surface portion 352 is an inclined surface portion inclined at about 45° with respect to the horizontal plane. In the receiving surface portion 352, a lower concave surface portion 353 forming a substantially semi-cylindrical concave surface with the left-right direction as the cylindrical axis direction is formed. The lower concave portion 353 has left and right sides open, and supports the supported portion 370a of the lower support rod portion 370 in a fitted state. That is, the lower concave portion 353 has a concave shape curved so as to follow the cylindrical shape of the supported portion 370a, and serves as a receiving portion that receives the supported portion 370a.

The receiving surface part 352 has a substantially rectangular external shape in planar view, and the upper side (rear side) part of the lower concave surface part 353 is made into the inclined plane part 352a. In addition, the receiving surface portion 352 has protrusion portions 352b formed on both left and right sides of the lower side (front side) of the lower concave portion 353 . The left and right protrusions 352b are formed so as to be positioned on the same plane as the plane portion 352a, and a concave notch 352c is formed below the lower concave portion 353 of the receiving surface portion 352. are forming

The lower frame support part 350 has a fixing plate 355 attached to and detachably from the receiving surface part 352 . The fixing plate 355 is fixed to the receiving surface portion 352 in a state where the supported portion 370a of the lower support rod portion 370 is sandwiched together with the receiving surface portion 352, thereby fixing the supported portion 370a to the pedestal 351. fix it

The fixed plate 355 is a plate-shaped member having a predetermined shape, and has a shape substantially line-symmetrical with respect to the receiving surface portion 352 when viewed from the side, with the imaginary plane along the plane portion 352a as the center line. The fixed plate 355 has a substantially rectangular outer shape when viewed from a plane in a state of being fixed to the receiving surface portion 352, and has a substantially semi-cylindrical concave surface at the middle portion of the front and back of the fixed plate 355 ( Upper) A concave portion 356 is formed. The upper concave portion 356 has a substantially cylindrical shape along the outer shape of the supported portion 370a of the lower support rod portion 370 together with the lower concave portion 353 by fixing the fixing plate 355 to the receiving surface portion 352. form the circumferential surface.

In the fixed plate 355, a portion on one side of the upper concave portion 356 is used as a flat portion 355a. Further, the fixing plate 355 has locking protrusions 355b formed in left and right central portions on the other side of the upper concave portion 356 . In the fixing plate 355, a portion anterior to the front and rear center of the upper concave portion 356 is a planar portion tangential to the circumferential shape along which the upper concave portion 356 follows when viewed from the side, and the locking protrusion portion. 355b protrudes from the planar portion (see Fig. 17). The hooking protrusion 355b has a width smaller than the dimension of the left-right direction of the notch 352c of the receiving surface 352 .

A locking bar 357 whose axial direction is the left-right direction is fixed to the rear side of the locking protrusion 355b. The locking rod 357 is a columnar member having a circular cross-sectional shape, and is fixed to the back surface of the locking protrusion 355b by welding or the like. The right and left sides of the locking bar 357 protrude from the locking protrusion 355b, and this protruding portion serves as the locking portion 357a to the receiving surface portion 352.

With respect to the receiving surface portion 352, the fixing plate 355 catches the locking rod 357 on the left and right protruding pieces 352b, and the flat portion 355a is overlapped with the flat portion 352a from above. , fixed by fixing bolts 358 penetrating these plane portions.

The fixing plate 355 places the locking protrusion 355b at the cutout 352c, and makes the left and right locking portions 357a of the locking rod 357 contact the left and right protrusions 352b from below, The hooking bar 357 is caught on the receiving surface 352 . Here, the hooking protrusion 355b has its distal end positioned below the right and left protrusion 352b via the notch 352c. The fixing bolt 358 passes through the holes 352e and 355e formed in the central portions of the flat portions 352a and 355a, and is screwed into the nut 359 located on the other side of the flat portion 352a.

In this way, the left and right lower frame support portions 350 are supported by the receiving surface portion 352 of the pedestal 351 and the fixing plate 355 fixed thereto to support portions 370a at both left and right ends of the lower support rod portion 370. ) is fixed and supported in a state where it is supported from the top and bottom. In addition, in the supported state of the lower support rod part 370 by the lower frame support part 350, the lower support bar part 370 has the left and right ends from the support part by the receiving surface part 352 and the fixing plate 355. It protrudes slightly outward to the left and right.

A support structure by the upper frame support 360 will be described. The upper frame support 360 is provided on the left side of the conveyor 7 . Specifically, the upper frame support part 360 is located near the bracket 332 before supporting the front side of the left lifting cylinder 330, and is installed at the left end of the conveyor transverse frame 340 (Fig. 9, see FIG. 18).

In the work frame 30, as shown in FIGS. 6 and 18, as a portion supported by the upper frame support portion 360, an upper support rod portion 380 having a central axis in the left-right direction is provided. The upper support rod portion 380 is an elongated cylindrical portion having a circular cross-sectional shape. The upper support rod portion 380 is installed in a state supported by left and right support arms 381 in a straight line extending rearward from the left end of the horizontal frame portion 31 constituting the working part frame 30, there is. The upper support bar portion 380 is constructed between the rear ends of the left and right support arms 381 in a state in which they are fixed to the left and right support arms 381 by welding or the like. The support arm 381 is tilted upward and upward so as to be parallel to the fifth frame portion 33e when viewed from the side.

In the upper frame support portion 360, the configuration for supporting the upper support bar portion 380 is the same as the configuration for supporting the lower frame support portion 350 for the lower support bar portion 370, so the description is omitted by attaching the same reference numerals. do.

9 and 18 , in the upper frame support portion 360, the pedestal 351 is attached to the left end portion of the conveyor transverse frame 340 in a state fixed by welding or the like. In the upper frame support portion 360, a pedestal 351 is provided so as to protrude upward from the conveyor side frame 340 so as to position the receiving surface portion 352 above the conveyor side frame 340.

In the upper frame support part 360, the lower concave surface part 353 of the receiving surface part 352 becomes the receiving part which receives the upper support rod part 380, and the upper concave surface part 356 of the fixed plate 355 is fixed plate ( 355) is fixed to the receiving surface portion 352, together with the lower concave surface portion 353, to form a substantially cylindrical peripheral surface portion conforming to the outer shape of the upper support bar portion 380. In the upper frame support part 360, the fixing plate 355 is fixed to the receiving surface part 352 with the receiving surface part 352 and the upper supporting bar part 380 sandwiched therein, so that the upper supporting bar part 380 is a pedestal. (351).

In this way, the upper frame support portion 360 fixes and supports the upper support bar portion 380 while holding it from the top and bottom by the receiving surface portion 352 of the pedestal 351 and the fixing plate 355 fixed thereto. . Between the rear transverse frame portion 31 and the upper support rod portion 380, a space is secured for engaging the locking rod 357 of the fixing plate 355 with respect to the left and right protruding pieces 352b from below. In addition, in the upper frame support portion 360, most of the upper support bar portion 380 except for both left and right ends is held by the receiving surface portion 352 and the fixing plate 355 (see Fig. 18).

As described above, by the left and right lower frame supports 350 and the upper frame support 360 installed on the left side of the aircraft, the work section frame 30 constituting the harvest work section 6 is attached to the machine frame 9. It is supported at three points with respect to a configuration including a conveyor 7 installed so as to be able to rotate relative to each other.

Regarding the lower frame supports 350 at the lower two points, the state in which the lower support bars 370 are fitted to the receiving surface 352 is maintained by the weight of the harvesting work unit 6, so that the fixing plate 355 ) can be omitted. In this case, in the upper frame support portion 360, the upper support bar portion 380 is supported in a fixed state by the fixing plate 355, and in the lower frame support portions 350 on either side, the lower support bar portion 370 is lowered. With the concave portion 353 positioned on the pedestal 351, the supporting state of the harvesting work section 6 relative to the traveling body 3 side is maintained.

[Rotation Structure of Harvesting Work Department]

The rotation structure of the harvesting operation part 6, that is, the side open structure of the harvesting operation part 6 is demonstrated. The vegetable harvester 1 includes a rotation support 400 that supports the harvesting work unit 6 so as to be able to rotate laterally with respect to the traveling body 3 .

In the present embodiment, the rotation support portion 400 is provided at a position on the right side of the conveyance start end of the conveyor 7, and the position of the upper frame support portion 360 relative to the conveyor 7 in the left-right direction and It is installed on the right side that becomes the opposite side. And as shown in FIG. 19 and FIG. 20, the harvesting work part 6 is pivotally supported so that it may open to the right with respect to the traveling body 3 centering on the rotation support part 400.

The rotation support part 400 is attached to the conveyor horizontal frame 340 as an elevating frame. In this embodiment, the rotation support part 400 is provided in the position which becomes substantially symmetrical with the upper frame support part 360 with respect to the left-right central position of the body of the vegetable harvester 1 (refer FIG. 9). In the configuration in which the upper frame support 360 is disposed at the left end of the conveyor transverse frame 340, the rotation support 400 is provided at the right end of the conveyor transverse frame 340.

The conveyor transverse frame 340 supports the harvesting work unit 6 with respect to the conveyor 7 and is installed so as to be able to move up and down in the traveling body 3 . The conveyor transverse frame 340 becomes a part that moves up and down with respect to the body frame 9 by the expansion and contraction operation of the left and right lifting cylinders 330 by the front connection of the left and right lifting cylinders 330.

[Rotation support part]

The structure of the rotation support part 400 is demonstrated. In the power transmission configuration of the vegetable harvester 1 shown in FIG. 10 , the rotation support unit 400 is a power transmission shaft 230 for transmitting rotational power of the work unit transmission shaft 217 to the work unit input shaft 220 . It is composed around the axis of And the rotation support part 400 is comprised so that the rotation axis A1 may match the central axis of the power transmission shaft 230.

That is, the pivot support 400 has a power transmission shaft 230 as a power transmission shaft for transmitting power from the traveling body 3 side to the harvesting work unit 6, and the power transmission shaft 230, It is formed coaxially with the rotation axis A1 of the harvesting work part 6 by the rotation support part 400.

The rotation axis A1 of the rotation support part 400 coincident with the central axis of the power transmission shaft 230 is the vegetable harvester 1 in a state where the crop processing unit including the harvesting operation unit 6 is not rising. ), it is inclined with respect to the vertical direction so as to have a forward inclined shape when viewed from the side of . When the crop processing unit is raised by the lifting cylinders 330 on either side, the axial direction of the rotation axis A1 of the rotation support 400 becomes substantially the vertical direction.

21, 22 and 23, the rotation support part 400 is installed in the state supported by the support case part 401 fixed to the right end side of the conveyor horizontal frame 340. The support case portion 401 has a front portion 401a, a rear portion 401b, a bottom surface portion 401c, a left side surface portion 401d, and a right side surface portion 401e, and has a box shape with the upper side open by these surface portions. It consists of To the left side of the left face portion 401d, the right end of the conveyor transverse frame 340 is fixed by welding or the like.

The support case portion 401 is supported from below by a support frame 402 provided below the right side of the conveyor transverse frame 340 . The support frame 402 is a flat substantially rectangular tubular straight frame, extending from the right side support plate 333 toward the right among the left and right support plates 333 supporting the conveyor cross frame 340, and conveyor cross frame 340. It is attached to the lower side of the frame 340. The support frame 402 extends its right end to the right beyond the conveyor transverse frame 340 and supports the support case portion 401 from below. The support frame 402 has a substantially U-shaped cross-sectional shape at the right end that supports the support case portion 401 (see FIG. 21 ).

The rotation support part 400 has a lower gear case 405 fixed to the support case part 401 and an upper gear case 406 installed on the upper side of the lower gear case 405 . The upper gear case 406 is installed in a supported state so as to be able to rotate with respect to the lower gear case 405 . That is, in the rotation support part 400, the lower gear case 405 is a support part on the traveling body 3 side, and the upper gear case 406 is a rotating part with respect to the traveling body 3 side Harvest It becomes a support part on the side of the working part (6).

The lower gear case 405 is fixed to the bottom surface portion 401c of the support case portion 401 by fixing bolts 408 at four points. The fixing bolt 408 penetrates the bottom surface portion 401c from the lower side and is screwed into a screw hole formed in the flange portion 405a provided on the lower side of the lower gear case 405. Further, the lower gear case 405 is fixed to the front portion 401a of the support case portion 401 at two points on the left and right by fixing bolts 409 (see Fig. 23). The fixing bolt 409 penetrates the front portion 401a from the front side and is screwed into a screw hole formed on the front side of the lower portion of the lower gear case 405.

As shown in Fig. 22, the lower gear case 405 has an inner circumferential surface 405b formed in a cylindrical shape as a surface forming an internal space. In the lower gear case 405, the power transmission shaft 230 is rotatably supported. The power transmission shaft 230 is supported at a predetermined position by the lower bearing 411 installed at the lower end of the lower gear case 405 and the upper bearing 412 installed at the upper end of the lower gear case 405. has been The lower bearing 411 and the upper bearing 412 support the power transmission shaft 230 with respect to the inner peripheral surface 405b. The central axis of the inner circumferential surface 405b coincides with or approximately coincides with the central axis of the power transmission shaft 230 in its cylindrical shape.

At the lower end of the power transmission shaft 230, a bevel gear 231 meshing with a bevel gear 218 provided at the front end of the work portion transmission shaft 217 is fixedly installed. The bevel gear 231 is located right above the lower bearing 411 and serves as an input unit that receives input of rotational power from the work unit transmission shaft 217 . The lower gear case 405 receives the front end of the work part transmission shaft 217 from the rear side, and houses the bevel gear 218 and the bevel gear 231 in the lower part. On the rear side of the lower gear case 405, a rear tube portion 405c is formed to receive the front end of the work portion transmission shaft 217 from the rear side. The rear cylinder portion 405c is a substantially cylindrical portion with an opening at the rear side.

At the upper end of the power transmission shaft 230, a bevel gear 232 meshing with a bevel gear 219 installed on the input shaft 220 of the work unit is fixedly installed. The bevel gear 232 is installed on the upper end of the power transmission shaft 230 protruding upward from the upper bearing 412, is located directly above the upper bearing 412, and transmits rotational power to the work unit input shaft 220. It becomes an output unit that performs the output of

As shown in FIG. 22 , the lower gear case 405 has a support flange portion 415 protruding in an edge shape on the outer circumferential side of the upper and lower substantially central portion. The support flange portion 415 has an upper end surface 415a along a plane perpendicular to the pivot axis A1. In the lower gear case 405, a portion above the support flange portion 415 is extended upward as a tubular case portion 416 forming an upper portion of the inner peripheral surface 405b. The tubular case portion 416 is a cylindrical portion constituting the upper portion of the lower gear case 405, and is formed concentrically with the power transmission shaft 230. An upper bearing 412 is provided in the vicinity of the upper open end of the tubular case portion 416 .

The upper gear case 406 is installed vertically with respect to the cylindrical vertical cylindrical case portion 421 along the axial direction of the rotation shaft A1 of the rotation support portion 400 and the vertical cylindrical case portion 421. It has a horizontal tubular case portion 422 of a cylindrical shape. The horizontal cylindrical case portion 422 extends from the upper side of the vertical cylindrical case portion 421 to the left and right outer sides. The upper gear case 406 is constituted in a substantially L-shape by a vertical cylindrical casing portion 421 and a transverse cylindrical casing portion 422 .

The vertical cylindrical case portion 421 has an inner peripheral surface 421a formed in a cylindrical shape by making the lower side the opening side and communicating the upper side to the horizontal cylindrical case portion 422 . The vertical cylindrical case portion 421 is sandwiching the cylindrical case portion 416 of the lower gear case 405 from the lower side.

The vertical tubular case portion 421 has a support flange portion 423 protruding from the outer circumferential side in a blade shape at the lower end. The support flange portion 423 has a lower surface 423a along a plane perpendicular to the pivot axis A1.

In the upper gear case 406, the cylindrical case portion 416 of the lower gear case 405 is inserted into the vertical cylindrical case portion 421, and the support flange portion 423 is inserted into the support flange portion 415. In the state supported on the top, it is rotatably supported with respect to the lower gear case 405 with the central axis of the power transmission shaft 230 as the center of rotation. The upper end of the cylindrical casing portion 416 is located near the upper end of the vertical cylindrical casing portion 421 , that is, the connection portion of the vertical cylindrical casing portion 421 to the horizontal cylindrical casing portion 422 .

In the transverse cylindrical casing portion 422, the left and right inner (left in FIG. 22 ) end portions are located on the left and right inner sides of the vertical cylindrical casing portion 421 , and most of the left and right outer (right in FIG. 22 ) ends are extended to the left and right outside of the vertical cylindrical case portion 421 . The transverse cylindrical case portion 422 has an inner circumferential surface 422a formed in a cylindrical shape as a surface forming an internal space.

Inside the horizontal tubular case part 422, the part on the right side of the work part input shaft 220 is rotatably supported. In the transverse cylindrical case portion 422, the input shaft 220 of the work unit is a left bearing 425 provided at the left end of the transverse cylindrical case portion 422 and the right end portion of the transverse cylindrical case portion 422. It is supported at a predetermined position by the right bearing 426 installed therein. The left bearing 425 and the right bearing 426 support the work part input shaft 220 with respect to the inner peripheral surface 422a. The central axis of the inner peripheral surface 422a coincides with or approximately coincides with the central axis of the work part input shaft 220 in its cylindrical shape. The central axis of the work unit input shaft 220 is orthogonal to the rotational axis A1 that coincides with the central axis of the power transmission shaft 230 .

A bevel gear 219 meshing with a bevel gear 232 provided at the upper end of the power transmission shaft 230 is fixed to a portion on the left side of the input shaft 220 of the work unit in the transverse cylindrical case portion 422. there is. The bevel gear 219 is installed at a position adjacent to the right side of the left bearing 425 . The bevel gear 232 is installed at a position facing the inside of the transverse cylindrical case portion 422 from the vertical cylindrical case portion 421 . From the opening at the left end of the transverse tubular case portion 422, the input shaft 220 of the working portion extends to the left.

A sprocket 229 constituting the fourth chain transmission mechanism 239 (see Fig. 10) is fixed to the right end of the working portion input shaft 220. The fourth chain transmission mechanism 239 is accommodated in a chain case 427 installed between the right end of the work unit input shaft 220 and the digging drive shaft 78.

The upper gear case 406 is installed in a fixed state to the right end of the rear transverse frame 31 with respect to the work frame 30 constituting the harvest work section 6. Specifically, the upper gear case 406 is fixed to the right end of the rear transverse frame portion 31 via a support bracket 431 and a support plate 432 .

The support plate 432 is a plate-like member bent at right angles and has an upper surface portion 432a and a rear surface portion 432b respectively covering the upper and rear surfaces of the right end of the rear transverse frame portion 31, and the rear transverse frame portion It is fixed to (31) by welding or the like. To the support plate 432, a support bracket 431 is fixed by welding or the like.

The support bracket 431 includes left and right sidewall portions 431a located on both left and right sides of the vertical cylindrical case portion 421, and a lower surface portion 431b constructed between the lower portions of the left and right sidewall portions 431a, It has a vertical wall part 431c constructed between the left and right side wall parts 431a above the lower surface part 431b. The lower surface portion 431b is installed in a state in which the entirety of the vertical cylindrical case portion 421 is received by a concave portion forming a semicircular shape with the rear side facing the open side when viewed from above. The vertical wall portion 431c is a plate-shaped portion with the front-back direction as the thickness direction.

The support bracket 431 is fixed to the support plate 432 by welding or the like in a state along the support plate 432 by orthogonal notches formed in the lower front portions of the left and right side wall portions 431a. As shown in FIG. 23, the support bracket 431 has a horizontal support surface portion 431d overlapping the upper surface portion 432a of the support plate 432 from above. The support surface portion 431d is a plate-like portion bent at a right angle from the lower side of the vertical wall portion 431c toward the front side. Between the left and right side wall portions 431a, a plate-shaped rib plate portion 431e having a thickness direction in the left-right direction (the axial direction of the work section input shaft 220) is provided. The rib plate portion 431e has a substantially triangular shape so as to overlap the front upper portions of the left and right side wall portions 431a when viewed from the side.

With respect to the vertical wall portion 431c of the support bracket 431, the left side portion of the upper gear case 406 is fixed at four points by bolts 433 (see Fig. 23). A bolt 433 penetrates the vertical wall portion 431c and is screwed into a screw hole formed on the front side of the left portion of the upper gear case 406.

As described above, in the rotation support part 400, the upper gear case 406 fixed to the work section frame 30 side is vertical with respect to the lower gear case 405 fixed to the conveyor transverse frame 340 side. By the fitted part of the cylindrical case part 416 of the lower gear case 405 with respect to the cylindrical case part 421, it is provided so that rotation is possible about rotation axis A1. As shown in FIG. 22, in the rotation operation of the upper gear case 406 relative to the lower gear case 405, the inner peripheral surface 421a of the vertical cylindrical case portion 421 of the cylindrical case portion 416 It becomes a sliding surface with respect to the outer peripheral surface 416a. Moreover, in the same rotation operation, the lower end surface 423a of the support flange part 423 becomes a sliding surface with respect to the upper end surface 415a of the support flange part 415.

And the rotation support part 400 is comprised so that a power transmission system with respect to the harvesting work part 6 may be maintained from the traveling body 3 side irrespective of the rotation position of the harvesting work part 6.

In the rotation support part 400, a power transmission shaft for transmitting the rotational power of the work part transmission shaft 217 installed on the traveling body 3 side to the work part input shaft 220 installed on the harvest work part 6 side (230) is installed. The rotation of the harvesting operation unit 6 by the rotation support unit 400 is rotation around the rotation axis A1 that coincides with the central axis of the power transmission shaft 230. The rotation of the harvesting work unit 6 is in a state substantially along the vertical direction of the three axes of the power transmission shaft 230, the work unit transmission shaft 217 and the work unit input shaft 220 geared thereto. It is implemented without changing the relative position with respect to the axial direction of the rotation axis A1 which has become. In short, in the rotational operation of the harvesting unit 6, the distance between the shafts of the working unit transmission shaft 217 and the working unit input shaft 220 connected to each other via the power transmission shaft 230 in the direction of the rotation axis A1 is maintained, the work unit input shaft 220 rotates around the axis of the rotation shaft A1 with respect to the power transmission shaft 230 as the harvesting unit 6 rotates.

With this configuration, in the rotational operation of the harvesting work unit 6 by the rotation support unit 400, the gear engagement state of the work unit transmission shaft 217 and the power transmission shaft 230, and the power transmission shaft ( 230) and the gear engagement state of the input shaft 220 of the working part, and a state in which power can be transmitted between these three shafts is maintained. That is, the rotation of the harvesting operation unit 6 by the rotation support unit 400 in a state in which power can be transmitted between the operation unit transmission shaft 217 and the operation unit input shaft 220 via the power transmission shaft 230 Even when the operation is performed and the harvesting unit 6 is side-opened, power transmission between the shaft of the working unit transmission shaft 217 and the working unit input shaft 220 via the power transmission shaft 230 is possible. is maintained

In the rotation support part 400, a locking plate 435 for regulating the movement of the upper gear case 406 relative to the lower gear case 405 in the direction of the rotation axis A1 is provided. The locking plate 435 is a plate-shaped member bent to form a substantially crank shape when viewed from the side, and one side is inserted into the vertical cylindrical case portion 421 of the upper gear case 406 from the rear side. The locking plate 435 has a locking surface portion 435a forming a semicircular concave portion as a portion for engaging with the vertical tubular case portion 421 .

In the vertical tubular case portion 421 , an outer circumferential groove 436 to which the engaging plate 435 is engaged is formed on the upper side of the support flange portion 423 . The outer circumferential groove 436 is formed by upper and lower blade-like portions formed over the entire circumference of the outer circumferential surface of the vertical cylindrical case portion 421 . The locking surface portion 435a of the locking plate 435 is inserted into the outer circumferential groove 436 from the rear side, so that the locking plate 435 is engaged with the vertical tubular case portion 421 .

The locking plate 435 has, on the other side, a fixing surface portion 435b for the lower gear case 405 . The fixing surface portion 435b is a horizontal surface portion formed on the lower rear side in a stepped shape with respect to the locking surface portion 435a. The locking plate 435 places the fixing surface portion 435b above the rear part 405c of the lower gear case 405, and fixing bolts 437 penetrating the fixing surface portion 435b at two points on the left and right. In the lower gear case 405 is fixed. The fixing bolt 437 is screwed into a screw hole formed on the upper side of the rear cylinder portion 405c of the lower gear case 405.

In this way, the engaging plate 435 is engaged with the upper gear case 406 and fixed to the lower gear case 405, so that the rotation axis of the upper gear case 406 relative to the lower gear case 405 ( It regulates the movement in the axial direction of A1). In short, by means of the locking plate 435, an action of preventing the upper gear case 406 from coming off with respect to the lower gear case 405 is obtained.

Regarding the arrangement of the rotation support part 400 in the vegetable harvester 1, the following arrangement is employed. That is, the rotation support part 400 is installed on the right side of the left-right direction of the traveling body 3, and the operation unit for operating the vegetable harvester 1 is provided on the left side of the traveling body 3 in the left-right direction. 5) is installed.

As shown in FIG. 4 , the operation unit 5 is provided on the left side of the conveyor 7 with respect to the conveyor 7 installed in the approximately central portion of the left and right sides of the traveling body 3 . With respect to such an arrangement of the operation unit 5, the rotation support unit 400 is provided at the right end of a conveyor transverse frame 340 extending on both the left and right sides at the conveyance start end of the conveyor 7. In particular, the operation box 12 of the operation unit 5 is located above the left end of the conveyor transverse frame 340, and is located on the left and right opposite sides of the rotation support unit 400 in plan view. In short, the operation box 12 and the rotation support part 400 are installed in the vegetable harvester 1 at positions substantially symmetrical to each other in a planar view.

[Transmission axis of work section]

The construction of the work unit transmission shaft 217 and its surroundings will be described. On the right side of the conveyor 7, the work section transmission shaft 217 is provided so that its axial direction is the front-rear direction when viewed from above. The work part transmission shaft 217 is gear-engaged with the right end of the work part input shaft 208 at the rear end, and the work part input shaft 208 is connected to the counter shaft through the second belt transmission mechanism 207. The input of the rotational power of 203 is received, and the rotational power is transmitted to the conveyor input shaft 127 via the third chain transmission mechanism 210 (see Fig. 10).

The rear end of the work section transmission shaft 217 is accommodated in a substantially cylindrical rear gear case 440 installed in a fixed state with respect to the body frame 9 . In the rear gear case 440, the bevel gear 216 at the rear end of the work part transmission shaft 217 is engaged with the bevel gear 215 at the right end of the work part input shaft 208. The rear gear case 440 rotatably supports the rear end of the work unit transmission shaft 217 .

The rear gear case 440 is on the right side of the upper part of the shaft support frame portion 441 installed on the right side of the vertical frame portion 336 on the right side in the rear of the body frame 9, to the shaft support frame portion 441. It is installed in a fixed state with a bolt 442 or the like (see Fig. 13). The rear gear case 440, in the horizontal direction, such that the axial direction of the rear end supported by the rear gear case 440 among the transmission shafts 217 of the working part is inclined forwardly downward by about 15 ° with respect to the horizontal direction when viewed from the side. It is installed at an angle to the

The conveyor input shaft 127 extends to the right from the conveying end of the conveyor 7, and the input sprocket 129 constituting the third chain transmission mechanism 210 is fixed to the right end of the conveyor input shaft 127. It is installed. Below the input sprocket 129, an output sprocket 213 (see FIG. 10), which receives winding of the chain 214 together with the input sprocket 129, is provided, and from the output sprocket 213 to the right, the input shaft of the working part 208 is extended, and a bevel gear 215 fixed to the right end of the input shaft 208 of the working part is installed so as to face the rear gear case 440.

As shown in FIG. 25, the work part transmission shaft 217 has an intermediate shaft portion 451 constituting most of the work portion transmission shaft 217, and a front material joint 454 on the front side of the intermediate shaft portion 451. ), and a rear shaft portion 453 connected via a rear free joint 455 to the rear side of the intermediate shaft portion 451 and a front shaft portion 452 connected via a . Each of the free joints of the front free joint 454 and the back free joint 455 has a pair of joint members connected to each other, and each joint member is attached to each shaft to be connected to each other.

The entirety of the front shaft portion 452 is located within the lower gear case 405, and the entire free joint 454 is located near the rear of the lower gear case 405. The rear shaft portion 453 is located substantially entirely within the rear gear case 440, and the rear free joint 455 is located near the front of the rear gear case 440.

The intermediate shaft portion 451 has a main body shaft portion 451a and an insertion shaft portion 451b in the shape of an elongated hexagonal cylinder, both of which have a hexagonal cross-sectional shape. The insertion shaft portion 451b is thinner than the main body shaft portion 451a, and the insertion shaft portion 451b is fitted into the front side of the main body shaft portion 451a from the rear side. The main body shaft portion 451a and the insertion shaft portion 451b constitute a double shaft structure, and the portion where the insertion shaft portion 451b is inserted into the body shaft portion 451a is a double shaft portion by these shaft portions.

The insertion shaft portion 451b is slidable in the axial direction and non-rotatably fitted around the shaft by a hexagonal tubular shaft shape with respect to the main body shaft portion 451a. By the axial movement of the insertion shaft part 451b with respect to the main body shaft part 451a, the intermediate shaft part 451 expands and contracts. The joint member on the rear side of the former material joint 454 is connected to the front end of the insertion shaft portion 451b, and the joint member on the front side of the rear free joint 455 is connected to the rear end of the main body shaft portion 451a. there is.

In this way, the working part transmission shaft 217 is configured to be bendable at the connection portion by each joint of the former material joint 454 and the latter material joint 455, and rotates even in a bent state, thereby improving power transmission. It is structured to maintain its function. In addition, the work portion transmission shaft 217 is configured to be able to expand and contract in the axial direction by a fitting structure by the body shaft portion 451a and the insertion shaft portion 451b.

In the configuration in which the rear shaft portion 453 is installed in a fixed position with respect to the body frame 9 by the rear gear case 440, the left and right lifting cylinders 330 are moved by expansion and contraction of the transmission shaft 217 of the work unit. The raising and lowering operation of the crop processing unit by the is allowed. That is, the front side bevel gear 218 with respect to the rear side bevel gear 216 of the work unit transmission shaft 217 accompanying the raising and lowering operation of the crop processing unit by the expansion and contraction of the work unit transmission shaft 217. The change in position of is absorbed.

[Case of Transmission Shaft in Working Area]

As shown in FIGS. 24 and 25 , the transmission shaft 217 of the working portion is covered by a joint cover 460 provided between the rear gear case 440 and the lower gear case 405 . The joint cover 460 has a front cover 461, which is a movable side cover, and a rear cover 462, which is a fixed side cover.

The front cover 461 constitutes a cover portion substantially constituting the entirety of the joint cover 460, and extends along the axial direction of the work portion transmission shaft 217. The front cover 461 has a substantially rectangular external shape when viewed from the side, and is configured in a wall shape with the left-right direction as the thickness direction so as to form a vertically long cross-sectional shape. The front cover 461 has a shape in which the upper and lower widths are gradually widened from the rear side to the front side when viewed from the side.

The front cover 461 is a surface portion that forms a space for accommodating most of the work portion transmission shaft 217, and schematically includes a left surface portion 461a, a right surface portion 461b, an upper surface portion 461c, and a lower surface portion ( 461d), and a front portion 461e, the rear side being open. The front cover 461 is provided so as to position the work portion transmission shaft 217 at a substantially central portion in the vertical direction. The front cover 461 extends to a position covering the entirety of the front joint 454 on the front side, and extends to a position covering the front joint member of the rear joint 455 on the rear side. The working portion transmission shaft 217 extends the front end forward from the front portion 461e and is positioned within the lower gear case 405.

The front cover 461 is attached to the conveyor side frame 340 in a fixed state via a predetermined supporting member. In short, the front cover 461 is installed so as to be integrally raised and lowered together with the crop processing unit that is moved up and down by the raising and lowering cylinders 330 on either side.

The rear cover 462 is provided on the rear side of the front cover 461 and covers the rear end of the work section transmission shaft 217 . The rear cover 462 has an outer shape smaller than that of the front cover 461, and is installed in a state in which a front portion is inserted into the front cover 461 from an opening on the rear side of the front cover 461.

The rear cover 462 is a surface portion that forms a space for accommodating the rear end of the work portion transmission shaft 217, and has an upper surface portion, a lower surface portion, and left and right side surfaces, opening both the front and rear sides, and having a vertically long rectangular shape. It is configured in a substantially rectangular tubular shape so as to form a cross-sectional shape. The rear cover 462 covers the rear free joint 455 of the work portion transmission shaft 217 and a portion in the vicinity thereof.

The rear cover 462 is provided with approximately half of the front side positioned within the rear end of the front cover 461 and overlapped with the front cover 461 in its entirety. The outer shape of the cross section of the rear cover 462 is smaller than the opening area of the opening on the rear side of the front cover 461, and in the opening on the rear side of the front cover 461, the rear cover 462 and the front cover 461 A gap 463 is formed over the entire circumference between the .

The rear cover 462 is installed in a fixed supported state with respect to the rear gear case 440 via the support stay 465 and the support plate 466 . The support stay 465 is an oily plate-like portion extending rearward from the upper surface portion of the rear cover 462 .

The support plate 466 is a bent plate-shaped member that forms a substantially L-shape when viewed from the side, and has one surface portion 466a forming a substantially L-shape with respect to the rearward extension of the support stay 465. It overlaps from the lower side and is fixed to the support stay 465 by the bolt 468. The support plate 466 extends the other surface portion 466b forming a substantially L-shape from the support stay 465 downward. The support plate 466 has a notched concave portion with the lower side open, and is engaged with the rear gear case 440 from the upper side by the concave portion, and is secured to the rear gear case 440 by bolts 469. is fixed on

As described above, the joint cover 460 has a divided structure by the front cover 461 and the rear cover 462, and with respect to the rear cover 462 installed in a fixed state to the rear gear case 440, the front With the cover 461 on the movable side, lifting operation of the crop processing unit is permitted. That is, the gap 463 between the front cover 461 and the rear cover 462 moves the front cover 461 relative to the rear cover 462 accompanying the elevating operation of the crop processing unit (FIG. 25, arrows C1 and C2) are allowed. The joint cover 460 is configured not to interfere with the transmission shaft 217 of the working part during the raising and lowering operation of the crop processing unit.

As described above, the joint cover 460 installed on the work portion transmission shaft 217 is used as a guide for the leaf portion 2b ejected by the leaf transport device 250 installed on the central pull-out transport device 24. It works. As described above, the lateral leaf portion 2b discharged by the leaf transport device 250 is guided by the leaf shooter 263 to fall onto the upper surface 4e of the crawler traveling device 4 on the right side. (See Fig. 13, arrow D1).

As shown in Fig. 13, the front cover 461 is located on the left and right outside of the crawler traveling device 4 on the right side in the left and right direction. In addition, the front cover 461 is provided so as to overlap the lower part of the back shooter 263 when viewed from the right side with respect to the back shooter 263 . In short, the front cover 461 is installed so as to face the lower part of the back shooter 263 at the right side position.

Further, a guide plate 470 is provided below the front of the front cover 461 . The guide plate 470 is a substantially rectangular plate-shaped member, has a bent portion 470a at its upper edge, and has a bent portion 470a along the lower surface portion 461d of the front cover 461, in a state where the bolt 471 ) at two points in front and behind. The guide plate 470 is installed so as to face the upper part of the lower vertical surface portion 276 . As shown in FIG. 13 , the guide plate 470 extends from the top to the bottom to fill the gap between the upper surface 4e of the crawler traveling device 4 and the front cover 461 when viewed from the top. It is installed in an inclined shape so as to face the left and right inner side (left side) from (right side).

As described above, according to the configuration provided with the front cover 461 and the guide plate 470, the space portion on the guide surface portion 275, the back shooter 263, the front cover 461, and the guide plate 470 The part of the intervening space serves as a discharge path for the stem leaf portion 2b released from the embryo transfer device 250 . Of the lateral leaf portions 2b emitted from the back leaf transport device 250, the lateral leaf portion 2b that is to go to the right from the crawler traveling device 4 on the right side corresponds to the left side surface portion 461a of the front cover 461. (See Fig. 13, arrow D2), being guided by the guide plate 470, falls on the upper surface 4e of the crawler traveling device 4.

In this way, by the front cover 461 of the joint cover 460 and the guide plate 470, the lateral leaf portion 2b discharged by the leaf transport device 250 is moved to the right side of the crawler traveling device 4 on the right side. discharge is prevented. Accordingly, for example, in the harvesting operation by the vegetable harvester 1, when the right side of six sets of crops to be harvested becomes the unharvested side with the crops that have not yet been dug up, the unharvested side Discharge of the foliar portion 2b can be prevented.

[About the rotation operation of the Harvest Work Department]

Rotation operation of the harvesting work unit 6 will be described. The side opening of the harvesting work unit 6 is performed in the following procedure. In addition, the state in which the harvesting work section 6 is fixedly supported on the side of the traveling body 3 and the crop processing unit is lowered is assumed as the normal state of the vegetable harvester 1. 1 to 4 show the vegetable harvester 1 in a normal state.

In the normal state of the vegetable harvester 1, in the case of harvesting work, first, the crop processing unit is raised by extending the left and right elevating cylinders 330, as shown in FIGS. 9 and 14 . When the crop processing unit rises, the digging device 23 is lifted up from the ground 320, and the direction of the rotational axis A1 of the rotational support 400, which was inclined forward, becomes substantially vertical. After that, an operation to cut off the work clutch 209 is performed, and an operation to stop the engine 10 is performed.

With the crop processing unit elevated, the fixing plates 355 fixed by the fixing bolts 358 in the left and right lower frame supports 350 and upper frame supports 360 are separated. A state in which the fixing plate 355 is separated from the frame supports at three points so that the lower support bar 370 or the upper support bar 380 clamped in each frame support can be separated from the receiving surface portion 352. becomes In the case where the fixing plate 355 is not used for the left and right lower frame supports 350, the removal work of the fixing plate 355 is unnecessary for the left and right lower frame supports 350.

From the state in which the fixing plate 355 is removed, the harvesting operation unit 6 is rotated rightward with the rotation axis A1 of the rotation support unit 400 as the center by manual operation. Thereby, as shown in FIG. 19 and FIG. 20, the harvesting work part 6 will be in the side open state. In the examples shown in FIGS. 19 and 20 , the rotation angle of the harvesting work unit 6 in the front-back direction is approximately 45°. However, the rotation angle of the side opening of the harvesting work part 6 is not limited.

A stopper (not shown) is installed on the side of the harvesting work unit 6 or on the side of the traveling body 3, and when the side-opening of the harvesting work unit 6 is performed, the stopper moves the harvesting work unit 6 outward to the left and right. Movement is regulated. Further, in the state in which the harvesting operation unit 6 is side-opened, a supporting member such as a locking rod is used to restrict the rotation of the harvesting operation unit 6 in the closing direction. Instead of the supporting member, a fixing device for fixing the side-opened harvesting work section 6 to the traveling body 3 side may be provided.

The operation of returning the vegetable harvester 1 to the normal state from the state in which the harvesting unit 6 is side-opened is performed in the opposite order to the operation of opening the harvesting unit 6 to the side. That is, first, the harvesting work unit 6 in the open state to the right is rotated about the rotation axis A1 of the rotation support unit 400 by manual operation, and the left and right lower frame support units 350 and upper frame support units In (360), the lower support bar portion 370 or the upper support bar portion 380 is fitted into the lower concave surface portion 353. In this way, the harvesting work unit 6 is positioned and supported with respect to the traveling body 3 .

Next, fixing plates 355 are attached to the left and right lower frame support portions 350 and upper frame support portions 360 . The fixing plate 355 is fixed to the receiving surface portion 352 with a fixing bolt 358 while engaging the locking bar 357 with respect to the receiving surface portion 352 . In the case where the fixing plate 355 is not used for the left and right lower frame supports 350, the work for attaching the fixing plate 355 to the left and right lower frame supports 350 becomes unnecessary. And the crop processing unit is lowered by contracting the lifting cylinders 330 on either side. In this way, the vegetable harvester 1 returns to the normal state.

As described above, with respect to the harvest work unit 6, the posture in the state fixed to the traveling body 3 side by the lower frame support portion 350 and the upper frame support portion 360 is set to the working posture, and the side open When the posture in one state is set to the non-working posture, the harvesting work unit 6 is configured to be able to rotate in the left-right direction between the working posture and the non-working posture.

According to the vegetable harvester 1 according to the present embodiment having the configuration described above, in the configuration in which the harvesting operation unit 6 is installed so as to be able to rotate sideways on the front side of the traveling body 3, the harvesting operation unit 6 ) can be easily performed laterally, and the power transmission system to the harvesting operation unit 6 can be maintained in a state where the harvesting operation unit 6 is side-opened.

According to the configuration in which the side opening of the harvesting work unit 6 is enabled by the rotation support unit 400, when the harvesting work unit 6 is side open, for example, driving such as attachment/detachment of a belt or disengagement of a gear Operation to the power transmission system from the body 3 side to the harvesting work section 6 side can be made unnecessary. In the present embodiment, in the rotation support part 400, the power transmission shaft 230 that receives rotational power input from the work part transmission shaft 217 and outputs rotational power to the work part input shaft 220 is provided. By installing, so-called drive insulation becomes unnecessary even when the side opening of the harvesting work part 6 is carried out. In addition, since drive insulation is unnecessary when the side opening of the harvesting work unit 6 is performed, connection of the drive system when returning the harvesting work unit 6 from the non-working posture to the working posture becomes unnecessary. From these points, rotation operation of the harvesting operation part 6 can be easily performed.

In addition, according to the rotation support unit 400, in a state where the harvesting work unit 6 is side-opened for cleaning, maintenance, inspection, etc., each of the harvesting work unit 6 is moved by power transmission from the engine 10. The device unit can be driven. Accordingly, after cleaning or maintenance by opening the side of the harvesting unit 6, checking the driving state of each device of the unit of the harvesting unit 6 while the side opening of the unit 6 is open. it becomes possible Therefore, since there is no need to return the harvesting work unit 6 to its original normal state in order to check the driving state of each device unit of the harvesting work unit 6, work efficiency such as cleaning and maintenance can be improved.

In addition, since the rotation drive unit in the harvest operation unit 6 can be rotated in a state where the harvest operation unit 6 is side-opened, clogging in the rotation drive unit can be easily removed, for example. , can improve the cleanability. Further, in the case where the engine 10 has a recoil starter as in the present embodiment, the crankshaft of the engine 10 is moved by pulling the recoil starter while putting the engine 10 in a non-starting state by operating a switch or the like. It can rotate manually, and each device part of the harvesting work part 6 can be operated.

In addition, according to the vegetable harvester 1, the transport starting end of the conveyor 7, which is a portion covered by the harvesting work section 6 in normal conditions, and the dropping device 27 are left on the traveling body 3 side. In this state, it is possible to side-open the harvesting operation part 6. In this way, by opening the side of the harvesting operation unit 6, it is possible to secure a sufficient work space for cleaning and maintenance of the transport start of the conveyor 7 and the dropping device 27, etc., thereby improving work efficiency. can improve

In addition, by opening the harvesting operation unit 6 from the side, access to parts that are difficult to access from the left and right outer sides of the body, such as the transport cutting unit configuration 80 in the left and right centers, for example, becomes easy. Thereby, the work efficiency of cleaning, maintenance, etc. with respect to the harvest work part 6 can be improved.

Moreover, the rotation support part 400 is installed in the conveyor horizontal frame 340 installed so that it can move up and down with respect to the traveling body 3. According to such a structure, the rotation support part 400 can be installed in a crop processing unit with a simple structure in the structure which installed the crop processing unit so that it could move up and down with respect to the traveling body 3. In addition, since the conveyor transverse frame 340 is connected to the left and right soil dropping frames 111 extended to the front of the conveyor 7, rotation of the harvesting work unit 6 in the rotation support unit 400 Regardless of the position, sufficient rigidity can be easily obtained to ensure power transmission by the power transmission shaft 230.

In addition, a support frame 402 is provided on the right side of the conveyor side frame 340 where the rotation support portion 400 is installed, and has a double frame structure by the conveyor side frame 340 and the support frame 402. has been With such a configuration, since sufficient rigidity can be obtained for the support portion of the rotation support portion 400, deformation and the like of the rotation support portion 400 can be suppressed, and regardless of the rotation position of the harvesting operation unit 6, Power transmission by the power transmission shaft 230 can be secured.

Moreover, the rotation support part 400 has the power transmission shaft 230, and the power transmission shaft 230 is provided coaxially with the rotation axis A1 of the rotation support part 400. According to such a structure, the rotation support part 400 can be realized with a simple structure. Specifically, since operation of the power transmission system from the traveling machine 3 side to the harvesting work unit 6 side (for example, attachment and detachment of a belt, etc.) is unnecessary, for example, a hydraulic pump, a hydraulic motor, or an electric motor The rotational support part 400 can be configured by a simple power transmission configuration by a shaft having a gear, without using an actuator such as a back.

In addition, the driving configuration for the pre-processing section including the power transmission shaft 230, the work section transmission shaft 217, the fourth chain transmission mechanism 239, the pre-processing transmission shaft 234, and the like is the right side of the machine in the left-right direction. are concentrated in (see FIG. 10). According to such a structure, the simplification of the driving structure for the pre-processing unit can be achieved.

In addition, left and right lifting cylinders 330 for raising and lowering the harvesting work unit 6 relative to the traveling body 3 are provided on the traveling body 3 side. According to such a configuration, since there is no need to separate the left and right lifting cylinders 330 when the side opening of the harvesting work unit 6 is performed, the attachment/removal work of the lifting cylinders 330 becomes unnecessary. Accordingly, work efficiency can be improved. In addition, even in a state where the harvesting work unit 6 is side-opened, the crop processing unit can be moved up and down by the lifting cylinders 330 on the left and right. Accordingly, even when the harvesting work unit 6 is side-opened, the digging device 23 can be grounded to ensure safety, or the lifting operation of the lifting cylinder 330 can be confirmed, for example. .

In addition, the left and right lifting cylinders 330 are installed between the base part 9b of the body frame 9 and the conveyor horizontal frame 340 in a suspended state. According to such a structure, it becomes possible to dispose the elevating cylinder 330 compactly. In addition, by providing two left and right lifting cylinders 330 as a configuration for raising and lowering the crop processing unit, the diameter of the cylinder can be reduced compared to a configuration provided with one lifting cylinder at the center of the left and right of the body, for example. While being able to do so, the hydraulic pressure of hydraulic oil can be reduced, and it becomes possible to raise the raising/lowering speed. In addition, by providing the left and right two lifting cylinders 330, the support load of the conveyor transverse frame 340 to the mount portion 9b of the body frame 9 can be distributed, so that the mount portion 9b and the transverse frame Optimization of the intensity of (340) becomes possible.

Moreover, the rotation support part 400 is provided on the side (right side) opposite to the side of the operation part 5 with respect to the left-right direction. In short, the rotation support part 400 and the operation part 5 are divided into left and right sides of the body and are disposed. In particular, about the operation box 12 of the operation part 5, it is arrange|positioned so that it may become substantially symmetrical with the rotation support part 400. According to such a structure, it is possible to avoid interference of the harvesting operation unit 6 with the operation unit 5 in a state where the harvesting operation unit 6 is side-opened. In addition, the overall length of the body of the vegetable harvester 1 can be shortened, and compactification of the body can be achieved.

In addition, in the vegetable harvester 1, according to the configuration in which the crop processing unit is installed to be able to be moved up and down by the left and right lifting cylinders 330, according to the fruit size and growth position of the crop and the length of the foliage part 2b, By raising and lowering the harvesting operation unit 6, foliage can be clamped and conveyed at an accurate position, and crop adaptability can be improved.

In addition, in the vegetable harvester 1, a conveyor lateral frame 340 is connected to the left and right earth dropping frames 111 extending in front of the conveyor 7. According to such a structure, the improvement of the intensity|strength of the frame structure of the conveyor 7 and the soil dropping device 27 can be aimed at.

In addition, by the left and right lower frame support parts 350 and upper frame support parts 360, the working part frame 30 constituting the harvesting work part 6, the left and right earth dropping frames 111, and connected thereto Conveyor transverse frame 340 is installed so as to constitute an integral frame part except when the side of the harvesting work section 6 is open. According to such a configuration, the strength of the overall frame configuration of the body of the vegetable harvester 1 can be secured.

In addition, the left and right lower frame support portions 350 and upper frame support portions 360 have support rod portions (lower support rod portions 370 and upper support rod portions 380) provided on the work frame 30, and concave portions 353 ) has a configuration to support the harvesting work unit 6 in a state accepted in the. According to such a configuration, when returning the side-opened harvesting work unit 6 to the working posture, the fitting portion of the support rod portion to the lower concave portion 353 serves as a guide, for example, the harvesting work unit 6 Even if it is in a slightly drooping state due to bending, the harvesting work section 6 can be easily housed in a predetermined position.

In addition, the vegetable harvester 1 has a split structure of a front cover 461 on the movable side and a rear cover 462 on the stationary side as a cover structure for the transmission shaft 217 of the work section. According to such a structure, the front cover 461 can be moved so that it may follow the work part transmission shaft 217 which moves up and down with the raising and lowering operation|movement of a crop processing unit. Accordingly, regardless of the raising/lowering operation of the crop processing unit, it is possible to maintain a state in which the entire work unit transmission shaft 217 is covered, and thus safety can be improved.

The description of the embodiment described above is an example of the present invention, and the crop harvester according to the present invention is not limited to the embodiment described above. For this reason, even if it is not the embodiment mentioned above, it goes without saying that various changes can be made according to design etc. as long as it does not deviate from the technical idea concerning this invention.

In the embodiment described above, the application example of the vegetable harvester 1 in a rowless continuous tank was described, but the vegetable harvester 1 can also be used in a field with a row.

In addition, in the embodiment described above, the rotation support portion 400 is provided on the right side with respect to the left-right direction in the body of the vegetable harvester 1, but may be provided on the left side. In this case, the operation unit 5 is preferably disposed on the right side of the body in relation to the rotation support unit 400 .

1: vegetable harvester (crop harvester)
2: Onion (crop)
3: Running aircraft
4: Crawler traveling device (traveling part)
5: control panel
6 : Harvest work department
7: conveyor (transport device)
9: aircraft frame (frame)
9b: housekeeper
12: operation box
30: work frame
230: power transmission shaft
330: lifting cylinder (actuator)
340: Conveyor transverse frame (elevating frame)
350: lower frame support
360: upper frame support
400: rotation support

Claims (6)

A traveling body having a traveling unit, and a harvesting work unit installed on a front side of the traveling body to be able to move up and down with respect to the traveling body, and while moving the traveling body forward by the traveling unit, crops are harvested by the harvesting working unit. As a crop harvester for harvesting,
A rotational support for supporting the harvesting operation unit to be rotatably lateral with respect to the traveling body,
The crop harvester, characterized in that the rotation support portion is configured to maintain a power transmission system to the harvesting operation unit from the traveling body side regardless of the rotational position of the harvesting operation unit. According to claim 1,
A conveying device for conveying the crops harvested by the harvesting work unit;
Supporting the harvesting work unit with respect to the conveying device, and further comprising a lifting frame installed to be able to move up and down in the traveling body,
The crop harvester, characterized in that the rotation support is installed on the elevating frame. According to claim 1 or 2,
The pivoting support has a power transmission shaft for transmitting power from the traveling body side to the harvesting work unit,
The crop harvester, characterized in that the power transmission shaft is installed coaxially with the rotation shaft of the harvesting operation unit by the rotation support unit. According to any one of claims 1 to 3,
The crop harvester, characterized in that the actuator for elevating the harvesting operation unit with respect to the traveling body is installed on the side of the traveling body. According to claim 2,
An actuator for raising and lowering the harvesting work unit with respect to the traveling body is installed in a state in which a mount portion extending from a frame supporting the conveying device and the lifting frame are connected to each other, crops, characterized in that harvest. According to any one of claims 1 to 3,
The rotational support is installed on one side of the traveling body in the left-right direction,
A crop harvester, characterized in that an operation unit for operating the crop harvester is installed on the other side of the left and right directions of the traveling body.

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