JP7453113B2 - green onion harvester - Google Patents

Description

The present invention relates to a green onion harvester that digs up and harvests green onions grown in a field from the ridges.

Traditionally, the green onion harvester digs up and harvests green onions grown in the field (white onions, deep-rooted green onions, etc.) from the ridges, and has a digging section that digs up the green onions from the ridges, and a digging section that holds the dug up onions backwards. There is a configuration that includes a conveying section for conveying. The green onion harvesting machine having such a configuration digs up the green onions by moving the machine forward and moving the blade provided at the tip of the digging section below the rhizome of the green onion planted in the ridge. Dig up and transport the green onions while holding the leaves.

Such a green onion harvester is equipped with a configuration for scraping off soil clods adhering to the rhizomes and the like of green onions transported by the transport section. It is important to sufficiently remove the soil adhering to the green onions from the viewpoint of suppressing problems caused by soil being caught in the conveyance section and reducing the labor required by workers after harvesting. Regarding the construction of a soil remover for removing soil adhering to green onions during transportation, the following techniques are conventionally available.

Patent Document 1 discloses, as a structure for removing soil, a drum-shaped first soil removing body that removes soil attached to green onions from below, and a first soil removing body provided on both left and right sides of the first soil removing body to remove soil attached to green onions. A configuration including a second soil removing body that removes soil from left and right sides is disclosed. The first soil removing body and the left and right second soil removing bodies are provided so as to rotate integrally with respect to a common rotating shaft whose axis direction is the left-right direction. Further, the left and right second soil removing bodies are provided so that their positions can be adjusted in the left and right directions along the axial direction of the rotating shaft body.

Patent Document 2 discloses, as a structure for removing soil, a soil removing drum that is rotationally driven with the left-right direction as an axial direction, and a soil removing body that is disposed behind the soil removing drum in the conveying direction by a conveying section. The configuration is disclosed. The soil removing body is provided so as to be rotationally driven with a direction parallel to the conveying direction by the conveying section as a rotation axis direction.

Japanese Patent Application Publication No. 2003-339219 Patent No. 4398659

When harvesting green onions, the size of the soil clods that adhere to the green onions varies depending on the soil quality and condition of the field. According to the configuration of Patent Document 1, the positions of the left and right second soil removing bodies can be adjusted to deal with such variations in the size of the soil clods. However, in the case of the configuration of Patent Document 1, since the first soil removing body and the second soil removing body are rotating parts supported by a common rotating shaft, adjustment according to the size of the soil clod is complicated. There is a problem with becoming. In addition, the configuration of Patent Document 1 is such that the first soil removal body and the second soil removal bodies located on both left and right sides of the first soil removal body are provided on a common rotating shaft body, so that the device is compact in the left and right direction of the machine body. It is difficult to achieve this goal.

Further, according to the configuration of Patent Document 2, it is considered that, for example, relatively large clods of earth can be dealt with by widening the left and right width of the earth dropping drum. However, increasing the horizontal width of the dirt removal drum increases the size of the device, which hinders the reduction in size and weight of the machine body. Moreover, according to the structure of Patent Document 2, a structure, a drive source, etc. for transmitting power for rotational driving are required for each of the soil removing drum and the soil removing body arranged behind it. For this reason, the structure of the earth dropping device becomes complicated, and it becomes difficult to make the aircraft smaller and lighter.

The present invention was made in view of the above-mentioned problems, and it is possible to reduce the size and weight of the machine without increasing the size of the device for removing soil attached to green onions during transportation. It is an object of the present invention to provide a green onion harvesting machine capable of achieving good scraping performance.

A green onion harvesting machine according to the present invention is a green onion harvesting machine that has a self-propelled traveling body and digs up and harvests green onions from the ridges while moving the body forward, and includes a digging section that digs up the green onions from the ridges; a conveyance section that conveys the green onions dug up by the digging section backward; a scraping section that scrapes off clods of soil adhering to the green onions conveyed by the conveyance section; A soil removing device is provided on the upper side of the green onion in the transport direction, and is used to limit the width of the clod of soil adhering to the green onion.

Further, in the green onion harvesting machine according to another aspect of the present invention, in the green onion harvesting machine, the conveying section has a pair of left and right conveying bodies extending in the front-rear direction in a plan view, and between the pair of left and right conveying bodies. The onion is conveyed in a state in which it is held, and the soil removing device has a main body member that acts on the soil clod, and a support part that supports the main body member, and the main body member has a main body member that is attached to the support part. On the other hand, it is provided so as to be rotatable with the left and right direction of the body as the rotation axis direction.

Further, in the green onion harvesting machine according to another aspect of the present invention, in the green onion harvesting machine, the conveying section has a pair of left and right conveying bodies extending in the front-rear direction in a plan view, and between the pair of left and right conveying bodies. The onion is conveyed in a state in which it is held, and the soil removing device has a main body member that acts on the soil clod, and a support part that supports the main body member, and the height of the main body member is adjustable. It is provided in

Further, in the green onion harvesting machine according to another aspect of the present invention, in the green onion harvesting machine, the support portion includes a support base fixed to a conveyance frame constituting the conveyance body, and a support base fixed to the conveyance frame that constitutes the conveyance body, and a support base fixed to the conveyance frame that constitutes the conveyance body, and and a movable support member that is movably provided and receives attachment of the main body member.

Further, in the green onion harvesting machine according to another aspect of the present invention, in the green onion harvesting machine, the conveying section has a pair of left and right conveying bodies extending in the front-rear direction in a plan view, and between the pair of left and right conveying bodies. The onion is conveyed in a state in which it is sandwiched, and the soil removing device is provided so as to be movable along the extending direction of the conveyance frame with respect to the conveyance frame that constitutes the conveyance body. .

According to the present invention, it is possible to reduce the size and weight of the machine body without increasing the size of the device for removing soil attached to green onions during transportation, and to obtain good scraping performance. be able to.

FIG. 1 is a left side view of a green onion harvester according to a first embodiment of the present invention. 1 is a plan view of a green onion harvester according to a first embodiment of the present invention. It is a bottom perspective view showing composition of a conveyance part and a soil removal device concerning a 1st embodiment of the present invention. It is a left side view showing composition of a conveyance part and a scraping part concerning a 1st embodiment of the present invention. It is a figure showing the composition of the conveyance part and the scraping part concerning a 1st embodiment of the present invention, and is a figure seen from the rear side of the conveyance direction by the conveyance part. It is a left side view showing the composition of the earth removal device concerning a 1st embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front perspective view which shows the structure of the earth removal device based on 1st Embodiment of this invention. It is a bottom view showing the composition of the soil removing device concerning a 1st embodiment of the present invention. It is a bottom perspective view which shows the structure of the conveyance part and soil removal device based on 2nd Embodiment of this invention. It is a left side view showing composition of a conveyance part and a scraping part concerning a 2nd embodiment of the present invention. It is a figure which shows the structure of the conveyance part and scraping part based on 2nd Embodiment of this invention, and is a figure seen from the back side of the conveyance direction by a conveyance part. It is a left side view showing the composition of the earth removal device concerning a 2nd embodiment of the present invention. It is a front perspective view which shows the structure of the soil removal device based on 2nd Embodiment of this invention.

The present invention is a green onion harvesting machine that digs up green onions grown in a field from the ridges and transports them for harvesting.By devising a structure for removing soil from the green onions during conveyance, The purpose is to obtain good scraping performance without increasing the size of the structure for removing soil. Embodiments of the present invention will be described below.

[First embodiment]
A first embodiment of the present invention will be described. As shown in FIGS. 1 and 2, a green onion harvester 1 according to the present embodiment digs up green onions 2 grown in a field from a ridge 3 and harvests them. The green onion harvesting machine 1 has a self-propelled traveling body 4, and digs up and harvests the green onions 2 from the ridges 3 while moving the body forward. The green onion harvesting machine 1 includes a traveling machine body 4 and a harvesting section 5 for harvesting green onions 2. In this embodiment, the green onions 2 to be harvested by the green onion harvester 1 are long green onions such as white onions and deep-rooted green onions, and have rhizomes 2a and leaf portions 2b (see FIG. 1).

The traveling body 4 includes a traveling section 6 configured as a crawler-type traveling device having a pair of left and right crawler sections 7, 7. The crawler section 7 has a plurality of wheels including a drive wheel 7a, and crawler belts 7b wound around these wheels. The crawler section 7 is driven by an engine 9 included in the green onion harvester 1. The traveling body 4 has a body frame 8 configured in a three-dimensional frame shape between the left and right crawler parts 7, 7. The body frame body 8 is constructed between the left and right crawler sections 7, 7.

The engine 9 is mounted on the rear right side of the fuselage frame body 8 at a position above and behind the crawler section 7 on the right side. A transmission 10 that receives input from the engine 9 is provided at the lower part of the body frame 8 and between the left and right crawler sections 7 .

An operating section 11 is provided on the upper right side of the body frame 8 to perform steering and speed change operations of the left and right crawler sections 7, 7 and operations for each working section of the harvesting section 5. The operating section 11 includes a main shift lever 12, a sub-shift lever 13, a working section up/down lever 14, a main clutch lever 15 for operating the travel clutch and working clutch, an engine stop switch 16, a left side clutch lever 17, and a right side clutch lever. 18, various operating tools such as an accelerator lever 19 are provided. Further, on the rear side of the operating section 11, a handle 20 is provided which is approximately "U" shaped in plan view. The accelerator lever 19 is provided on the handle 20.

A substantially horizontal plate-shaped boarding step 22 is provided at the rear end of the body frame frame 8 as a boarding section on which the worker 30 boards. The boarding step 22 is provided at a position behind each working section of the harvesting section 5 in such a manner that it projects rearward. The height position of the boarding step 22 is set to such a level that it does not interfere with the ridge 3 in which soil etc. attached to the green onion 2 are accumulated after digging up the green onion 2.

The green onion harvester 1 includes a harvesting section 5 , a digging section 25 , a conveying section 26 , a scraping section 27 , an attitude changing/aligning section 28 , and a collecting section 29 .

The digging section 25 is a working section for digging up the green onions 2 from the ridges 3. The excavation part 25 is provided at the left and right center of the lower front part of the fuselage. The digging section 25 includes a digging conveyor 32 supported by a rectangular support frame 31, and a digging blade 33 forming a blade section at the tip of the digging section 25.

The support frame 31 is provided so as to have a rectangular shape with the longitudinal direction extending in the front-rear direction when viewed from above. The support frame 31 has its base end (rear end) supported by a pivot 34 relative to the body frame 8 . The pivot 34 rotatably supports the support frame 31 with respect to the body frame 8 with the left-right direction as an axial direction.

The excavation conveyor 32 is a so-called bar conveyor in which a plurality of bars are installed in the left-right direction, and is provided in an inclined shape with a rising rear (low front and high rear) while being supported by the front part of the support frame 31. ing. The digging blade 33 is attached to the digging conveyor 32 on the starting end side (front end side) of the digging conveyor 32, and is provided so as to protrude forward.

The excavation part 25 is provided so as to be rotatable up and down with respect to the body frame frame 8 with the support part provided by the pivot 34 as a rotation center. That is, the digging part 25 moves the front side up and down by rotating around the pivot 34. The rotation operation of the excavation part 25 is performed by the expansion and contraction operation of an elevating cylinder (not shown) provided with the expansion and contraction direction substantially in the front-rear direction. The operation of raising and lowering the digging part 25 is performed by operating the working part up and down lever 14.

The conveying section 26 is a working section for conveying the green onions 2 dug up by the digging section 25 to the rear. The conveying section 26 is provided directly above the digging section 25 in an upwardly inclined shape along the slope of the digging conveyor 32 of the digging section 25 . The conveyance section 26 is configured to convey the green onion 2 dug up by the digging section 25 in an upright position toward the rear and upper side while holding the midway portion thereof from the left and right sides.

The conveyance section 26 has a conveyance direction that is inclined upward at the rear, and has a pair of left and right belt conveyance mechanism sections 41, 41 that are provided along an inclined plane that rises at the rear. Each belt conveyance mechanism section 41 includes a driving pulley 42 provided at the rear end, a driven pulley 43 provided at the front end of the belt conveyance mechanism section 41, and an endless conveyance belt wound around these pulleys. 44. The drive pulley 42 and the driven pulley 43 are supported by a conveyance section frame 47 that constitutes the belt conveyance mechanism section 41 so that the rotation axis direction is a direction perpendicular to the inclination of the conveyance belt 44 when viewed from the side of the body of the onion harvester 1. has been done.

The left and right belt conveyance mechanisms 41, 41 have their respective conveyance belts 44 facing each other, and rotate the conveyance belts 44 in a direction in which the opposing sides move rearward. The left and right conveyor belts 44 have the sides facing the other conveyor belts 44 as outward path portions that move rearward, and the forward path portions are brought into face-to-face contact with each other. The left and right conveyor belts 44 convey the green onion 2 rearward and upward while holding the leaf portions 2b of the green onion 2 at their contact portions.

A plurality of rolling pressure rollers 35 are provided on the inner peripheral side of the forward path portion of the conveyor belt 44 . Each compaction roller 35 is rotatably supported by the tip of a support arm 37 rotatably provided on a square pipe-shaped vertical support frame 36 that constitutes a conveyance section frame 47 . The vertical support frame 36 is provided in a straight line along the upwardly inclined direction of the belt conveyance mechanism section 41, and is located directly below the conveyance belt 44 when viewed from the side.

During its rotational movement, the support arm 37 is biased by a tension spring 38 in a direction in which the rolling pressure roller 35 comes into pressure contact with the inside of the conveyor belt 44 . The tension spring 38 is provided such that one end thereof is engaged with the support arm 37 and the other end thereof is engaged with the adjacent support arm 37 or a separately provided engagement portion.

In this way, the plurality of rolling pressure rollers 35 press the conveyor belt 44 from the inside in the direction of clamping the green onions 2, and a clamping force is applied to the left and right conveyor belts 44 at their contact portions. The spring pressure of the tension spring 38 adjusts the clamping force between the left and right conveyor belts 44 .

As described above, the conveyance section 26 has a pair of left and right belt conveyance mechanism sections 41, 41 as a pair of left and right conveyance bodies extending in the front-rear direction in plan view, and between the pair of left and right belt conveyance mechanism sections 41, 41. It is configured to transport green onions while holding them.

The scraping section 27 is a working section for scraping off the soil clod X1 adhering to the rhizome section 2a of the green onion 2 transported by the transport section 26. The scraping unit 27 includes a soil removing rotary body 45 that acts on the rhizome 2a of the green onion 2 that is transported rearward by the transport unit 26. The soil dropping rotary body 45 is a rotary body that rotates by a rotary shaft 46 whose axis direction is the left-right direction, and is located above the support frame 31 of the excavation section 25 and at a position below the rear of the conveyance section 26. It is provided. The rotating shaft 46 extends to the right from the dirt removing rotating body 45, and receives rotational power through a chain transmission mechanism in a chain case (not shown).

As shown in FIGS. 4 and 5, the soil-dropping rotary body 45 includes a cylindrical drum portion 56 with a rotating shaft 46 located at the central shaft portion, and a large number of protrusions provided on the outer peripheral surface of the drum portion 56. 57. A large number of protrusions 57 are provided at predetermined intervals in the axial direction and circumferential direction of the drum portion 56 so as to protrude radially when viewed in the axial direction of the soil removing rotary body 45 . The protruding portion 57 is provided by fixing both ends of a linear member bent into a substantially “V” shape to the outer circumferential surface portion of the drum portion 56 . Note that FIG. 5 corresponds to a view taken in the direction of arrow A1 in FIG. 4. However, in FIG. 4, the belt conveyance mechanism section 41 on the right side is shown, and the soil dropping rotary body 45 is shown in a sectional view at approximately the center in the left-right direction.

In addition, in the soil removal rotary body 45, among the projections 57, a plurality of soils are arranged on the projections 57a located at both ends of the drum section 56 in the direction of the rotation axis. A drop plate 58 is provided. The soil dropping plate 58 is provided with respect to the drum part 56 so as to form a rectangular plate-shaped projecting piece whose longitudinal direction is along the radial direction of the drum part 56. The soil dropping plate 58 is fixed to the protrusion 57a by a fixing member 59 such as a bolt, and extends outward from the protrusion 57a in the radial direction of the drum portion 56. In this embodiment, as the plurality of soil dropping plates 58, eight projecting pieces are provided at approximately equal intervals in the circumferential direction of the drum part 56 on each of both sides of the drum part 56 in the rotation axis direction.

The soil-dropping rotary body 45 makes the direction in which the projection 57 collides with the soil clod X1 attached to the rhizome 2a of the green onion 2 follow the direction in which the green onion 2 is conveyed by the conveyance section 26. That is, the soil removing rotary body 45 is provided so as to rotate clockwise when viewed from the left side of the green onion harvester 1. The rotational speed of the soil removing rotary body 45 is set to be sufficiently faster than the transporting speed of the transporting section 26. For example, the rotational speed (peripheral speed) of the dirt-dropping rotary body 45 is 1 [m/s], and the conveyance speed (peripheral speed) of the conveyance section 26 is 0.05 [m/s].

According to the scraping unit 27 having such a configuration, most of the soil clods X1 attached to the rhizomes 2a of the green onions 2 transported by the digging conveyor 32 and the transport unit 26 are removed by the scraping rotation. It is scraped off by the numerous protrusions 57 of the body 45. The rotary body 45 for removing soil, by its rotational action, continuously collides a large number of protrusions 57 against the clod of soil X1 attached to the rhizome 2a, and removes the clod of soil X1 attached to the rhizome 2a as much as possible. Make it smaller.

The attitude change/alignment section 28 is provided at a position immediately behind the conveyance section 26. The posture changing/aligning section 28 takes over the green onions 2 that have been conveyed in an upright posture by the conveying section 26 from the terminal end of the conveying section 26, and conveys the inherited green onions 2 while holding the middle part thereof. The posture changing/aligning unit 28 changes the posture of the clamped green onions 2 from a standing posture to a tilted posture in which the green onions 2 are tilted forward toward the outside, and aligns the green onions 2 whose posture has been changed along the conveying direction while aligning the left and right. It is transported toward the rear and upper side (in this embodiment, the left rear and upper side).

The attitude change/alignment section 28 has a conveyance direction that is inclined diagonally upward to the left, and has a pair of left and right belt transfer mechanism sections 51, 51 extending diagonally upward to the left from the rear end of the conveyance section 26. Each belt transfer mechanism section 51 includes a driving pulley 52 provided at its front end, a driven pulley 53 provided at the rear end of the belt transfer mechanism section 51, and an endless conveyor pulley wound around these pulleys. It has a belt 54.

The belt transfer mechanism section 51 is configured in a twisted manner so as to gradually turn outward to the left from the front end to the rear end. Specifically, the driving pulley 52 on the front side has its rotation axis in a direction substantially perpendicular to the inclination of the conveyor belt 54 when viewed from the side of the onion harvester 1, and the driven pulley 53 on the rear side has its rotation axis direction in the direction substantially perpendicular to the inclination of the conveyor belt 54. , with respect to the direction of the rotation axis of the drive pulley 52, tilted to the front and left side. The inclination angle of the driven pulley 53 in the front view of the onion harvester 1 is, for example, about 45°.

The left and right belt transfer mechanisms 51, 51 make the respective conveyor belts 54 face each other, and rotate the conveyor belts 54 in a direction in which the opposing sides move rearward. The left and right conveyor belts 54 have the sides facing the other conveyor belt 54 serving as forward path portions that move rearward, and the forward path portions are brought into face-to-face contact with each other. Due to the twisted configuration of the belt transfer mechanism section 51, the contact portion between the outgoing portions of the conveyor belt 54 is twisted in such a way that the clamping surfaces are gradually tilted in the clockwise rotation direction from the front side to the rear side as viewed from the front. ing. The left and right conveyor belts 54 sandwich the leaf portions 2b of the green onions 2 at their mutual contact portions, and convey the green onions 2 diagonally rearward and upward to the left while tilting them to the left due to the twisted configuration of the belt transfer mechanism 51. . Note that a plurality of tension rollers are provided on the inner peripheral side of the conveyor belt 54. Further, the left and right belt transport mechanisms 51, 51 inherit the green onion 2 by holding a portion of the green onion 2 below (on the rhizome 2a side) the portion of the green onion 2 held by the left and right belt transport mechanisms 41, 41.

By the posture change/alignment unit 28 as described above, the green onions 2 are aligned along the conveyance direction while changing their posture from a standing posture to a leaning posture (forward leaning posture), and are conveyed diagonally rearward and upward to the left in order. It is collected and stored in the collection unit 29.

The collecting section 29 is provided at a position below and behind the posture changing/aligning section 28. The collecting section 29 has a collecting table 61 having a substantially rectangular outer shape for sequentially collecting the green onions 2 conveyed by the posture changing/aligning section 28 . The collecting section 29 positions the front edge of the collecting table 61 below the terminal end of the attitude changing/aligning section 28, receives the green onions 2 that have fallen from the terminal end of the attitude changing/aligning section 28, and collects the green onions 2.・Storage.

The collection table 61 constitutes a mounting table part in the collection part 29, and is supported on a pipe-shaped support arm 62 extending rearward from the rear side of the fuselage frame frame 8. It is being The base end portion of the support arm 62 is rotatably supported by being inserted into a cylindrical support tube portion 63 provided at the rear of the body frame frame 8 from above. With such a configuration, the collection table 61 is rotatably provided around the cylinder axis direction of the support cylinder part 63 along the vertical direction.

Further, the collection table 61 is supported so as to be rotatable about the central axis of a pipe-shaped portion of the support arm 62 that extends substantially in the front-rear direction. The collection stand 61 is supported with most of it extending from the support arm 62 to the left.

Due to this support structure of the collection table 61, when in use, the collection table 61 is in a lying state with respect to rotation about the axis along the approximately front-back direction, as shown in FIG. 1 and FIG. It is located on the left rear side of the body frame body 8 with respect to rotation around the axis. On the other hand, when the collection table 61 is not in use, it is in a hanging state with respect to its rotation around an axis along the approximately longitudinal direction, and the collection table 61 is placed in a storage position located immediately behind the fuselage frame body 8 with respect to its rotation around its axis along the vertical direction. state. In addition, as for the storage state of the collection table 61, the collection table 61 in the hanging state is rotated to the front side about the axis along the vertical direction, and the left side crawler section 7 is moved while the collection table 61 is in the front-rear direction. It can also be placed on the left. This allows the overall length of the aircraft to be shortened.

Further, the collecting section 29 is provided on the left side of the boarding step 22, whereas the operating section 11 is provided on the right side of the boarding step 22. With this configuration, the harvested green onions 2 are collected in a pile in a lying position on the collecting section 29 on the left side of the worker 30 who is riding on the boarding step 22 and operating the operating section 11. , both the operability of the operating section 11 and the workability of collecting green onions 2 are achieved.

In addition, a pair of left and right gauge wheels 71, 71 are provided in front of the harvesting section 5. The left and right gauge wheels 71, 71 are ground wheels that determine the height of the front end of the harvesting section 5 from the ground, and make the traveling machine 4 travel along the ridge 3 while in contact with the left and right sides of the ridge 3.

The gauge wheels 71, 71 are supported by a gauge wheel support frame 73 provided in front of the body frame frame 8. The gauge wheel support frame 73 is attached to a transport section support frame section 72 that is provided in front of the body frame frame 8 and supports the transport section 26 . The gauge wheel support frame 73 includes left and right support arm portions 75 , 75 , a guide frame portion 76 having a gate shape in front view, and a gauge wheel support arm portion 77 extending from the front end of each support arm portion 75 . have

The support arm section 75 is formed of a pipe-shaped member, and extends upward and forward from the front end of the transport section support frame section 72. The guide frame section 76 is constituted by a pipe-shaped member, and its both ends are supported and fixed to the front and rear midpoints of the left and right support arm sections 75, and is constructed between the left and right support arm sections 75.

The gauge wheel support arm portion 77 includes a vertical arm portion 77a, which is a substantially rod-shaped portion provided in a slope downwardly from the front end of each support arm portion 75 in side view, and a lower end portion of the vertical arm portion 77a. a fork portion 77c including a horizontal arm portion 77b extending outward from the left and right sides; and a left and right substantially plate-shaped portion extending downward from the horizontal arm portion 77b and pivotally supporting the gauge wheel 71 on both sides. and has. The gauge wheel 71 is rotatably supported at the lower end of each gauge wheel support arm 77, that is, at the tip of the fork portion 77c. The gauge wheel 71 is provided on the gauge wheel support arm 77 so that its position can be adjusted laterally and its height can be adjusted.

In the harvesting section 5, a pair of left and right ridge breaking devices 80 are provided in front of the digging section 25. The ridge breaking device 80 is located behind the gauge wheel 71. The ridge breaking device 80 has a ridge breaking rotor 81 that acts on the ridge 3 to break the shoulders on both sides of the ridge 3 when the digging part 25 digs up the green onion 2 .

The ridge breaking device 80 reduces the entry resistance of the digging blade 33 of the digging unit 25 to the ridge 3 by breaking both shoulders of the ridge 3 with the ridge breaking rotor 81, thereby making the digging work by the digging unit 25 easier. Make it smooth. For this reason, the left and right ridge breaking devices 80 are provided symmetrically so that the ridge breaking rotors 81 are located at both shoulders of the ridge 3.

The ridge breaking rotor 81 has a disc-shaped pawl attachment plate 82 and a plurality of pawls 83 attached to the pawl attachment plate 82. The ridge breaking rotor 81 has a rotating shaft direction perpendicular to the plate surface of the claw mounting plate 82, and the rotating shaft is located at the center of the disc-shaped claw mounting plate 82.

The left and right ridge breaking rotors 81 are provided in an inclined shape so as to form an inverted "V" shape when viewed from the front of the aircraft. The ridge breaking rotor 81 rotates so as to move its lower side forward, that is, to cut up. The rotating left and right ridge breaking rotors 81 break down the shoulders on both sides of the ridge 3.

A rotor rotation shaft for rotating the ridge breaking rotor 81 extends outward from the center of the pawl mounting plate 82 to the left and right, and is housed in a cylindrical drive case 86. The rotor rotation shaft rotates in response to the rotational driving force of the first rotor drive shaft housed in the first pipe-shaped case 87 . The first pipe-shaped case 87 is disposed on both the left and right outer sides of the lower part of the fuselage in a downwardly inclined shape, and has a front end connected to the rear side of the drive case 86 . The drive case 86 houses a gear connection portion between the first rotor drive shaft and the rotor rotation shaft.

The rear end of the first pipe-shaped case 87 is connected to a second pipe-shaped case 88 that accommodates the second rotor drive shaft through a gear case 88 that accommodates a gear connection portion between the first rotor drive shaft and the second rotor drive shaft. It is connected to case 89. The left and right second rotor drive shafts rotate in response to the rotational driving force of a working unit input shaft housed in a horizontal shaft case 91 horizontally suspended on the front side of the body frame frame 8. A gear case 92 is provided at both left and right ends of the horizontal shaft case 91 to accommodate a gear connection portion between the second rotor drive shaft and the working part input shaft. The lower end of the case 89 is connected.

Further, the ridge breaking device 80 includes a rotor cover 94 that covers the ridge breaking rotor 81. The rotor cover 94 is a soil scattering prevention cover for preventing soil from scattering caused by the ridge breaking by the ridge breaking rotor 81. The rotor cover 94 is supported by a cover stay 95 extending forward from the first pipe-shaped case 87 .

In addition, guide members 96 are provided on the left and right inner sides of each ridge breaking device 80 to guide dead leaves of the green onions 2 and the like so that they do not interfere with the ridge breaking rotor 81, so that the leaves of the green onions 2 that have spread left and right do not interfere with the ridge breaking rotor 81. The guide member 96 is formed of a rod-shaped member having a predetermined shape, and is provided to the rotor cover 94.

Next, the support structure of each working part included in the onion harvester 1 will be explained. A vertical interval adjustment mechanism section 97 is provided between the excavation conveyor 32 constituting the excavation section 25 and the front and rear intermediate portions of the conveyance section 26 . The vertical interval adjustment mechanism section 97 includes an arm-shaped upper support body extending downward from the conveyance section support frame section 72 and an upper support body extending upward from the left and right outer side surfaces of the excavation conveyor 32. It has a structure in which arm-shaped lower supports are slidably stacked on top of each other.

In the vertical interval adjustment mechanism section 97, the upper and lower supports are provided with a plurality of fixing holes spaced apart from each other in the sliding direction, through which fixing tools such as bolts are passed. By selecting the fixing holes, the relative fixing positions of the upper and lower supports, that is, the length of the vertical interval adjustment mechanism section 97, are adjusted in stages, and the relative positions of the conveying section 26 and the digging conveyor 32 in the vertical direction are adjusted. adjusted.

Due to the connection structure between the excavation part 25 and the conveyance part 26 by the vertical interval adjustment mechanism part 97, the conveyance part 26 moves up and down together with the excavation part 25 in conjunction with the expansion and contraction operation of the elevating cylinder. Further, the digging section 25, the conveying section 26, and the scraping section 27 are arranged in a line along the front-rear direction at the left-right center of the traveling body 4. A boarding step 22 is provided behind these working sections.

Further, a vertical interval adjustment member 98 is provided between the first pipe-shaped case 87 extending rearward from the ridge breaking device 80 and the front end of the conveying section 26. The vertical interval adjustment member 98 is fixedly provided on the outer circumferential surface of the first pipe-like case 87 by welding or the like so as to protrude downward from the front part of the first pipe-like case 87.

The vertical interval adjustment member 98 is fixed to the support provided at the front end of the transport unit support frame 72 at two locations, front and rear, using fixing devices such as bolts that pass through elongated holes whose longitudinal direction is approximately in the vertical direction. has been done. With this configuration, the fixed position of the vertical distance adjusting member 98 relative to the support body is adjusted by the elongated hole, and the relative position of the conveying section 26 and the ridge breaking device 80 in the vertical direction is adjusted.

Next, the power transmission configuration in the green onion harvester 1 will be explained. In the onion harvester 1, the power of the engine 9 is divided into two parts, a travel drive system that drives the crawler part 7 and a work drive system that drives each work part, via a predetermined transmission mechanism.

In the travel drive system, the rotational driving force of the output shaft of the engine 9 is transmitted to the input shaft of the transmission 10 by a predetermined transmission mechanism, and is transmitted to the output shaft of the transmission 10 by the transmission mechanism included in the transmission 10. Drive wheels 7a of the crawler section 7 are attached to both ends of the output shaft of the transmission 10.

Regarding the work drive system, the rotational driving force of the output shaft of the engine 9 is transmitted to the work unit input shaft housed in the horizontal shaft case 91 by a predetermined transmission mechanism. The rotational driving force of the working unit input shaft is transmitted to the drive shaft of the digging conveyor 32 by a predetermined transmission mechanism, thereby driving the digging conveyor 32. Further, the rotational driving force of the working unit input shaft is transmitted to the drive pulleys 42 of the left and right belt transport mechanisms 41 and the drive pulleys 52 of the left and right belt transport mechanisms 51 by a predetermined transmission mechanism.

Further, the rotational driving force of the input shaft of the working part is transmitted to the rotating shaft 46 of the soil removing rotary body 45 by a predetermined transmission mechanism including a chain transmission mechanism in the chain case, whereby the soil removing rotary body 45 is rotationally driven. do. Further, the rotational driving force of the working part input shaft is transmitted to the drive case via the second rotor drive shaft in the second pipe-like case 89 and the first rotor drive shaft in the first pipe-like case 87 on both the left and right sides. This is transmitted to the rotor rotating shaft in 86, thereby rotationally driving the ridge breaking rotor 81.

The green onion harvesting machine 1 having the above configuration moves the blade provided at the tip of the digging part 25 below the rhizome part 2a of the green onion 2 planted in the ridge 3 while moving the machine body forward. By entering the green onion 2, the green onion 2 is dug up, and the leaf part 2b of the dug up green onion 2 is dug up and conveyed while being held. Specifically, green onions 2 are harvested as follows.

The green onion harvesting machine 1 causes the traveling body 4 to travel along the extension direction of the ridge 3 while following the hem of the ridge 3 using left and right gauge wheels 71, 71. Further, the traveling body 4 moves with the left and right crawler parts 7, 7 positioned in the groove 3a beside the ridge 3, and the ridge 3 positioned between the left and right crawler parts 7, 7. The operator 30 operates the operating unit 11 to operate the traveling machine 4 while performing harvesting work using the harvesting unit 5 .

When digging up the green onion 2 by the digging section 25, first, the digging blade 33 is made to enter below the rhizome section 2a of the green onion 2 in the ridge 3. Here, when digging up the green onion 2, the shoulders on both sides of the ridge 3 are broken down by the ridge breaking rotors 81 of the left and right ridge breaking devices 80, 80. By cutting down the ridge 3, the resistance of the digging part 25 to enter into the soil, that is, the resistance of the digging blade 33 to enter the ridge 3, is reduced, and the digging work by the digging part 25 is facilitated. In addition, in the ridge breaking device 80, the rotor cover 94 prevents soil from being scraped up and scattered by the ridge breaking rotor 81, which rotates in an up-cutting manner.

Thereafter, the green onion 2 is conveyed in a vertical position by the digging conveyor 32, transferred to the conveyance section 26, and conveyed rearward while being held by the left and right belt conveyance mechanism sections 41, 41. During the transportation by the transportation section 26, the soil removal rotary body 45 of the scraping section 27 removes soil from the rhizome portion 2a of the green onion 2. This soil removal makes it easier to clean the green onions 2 after harvesting.

Thereafter, the green onions 2 are transferred from the conveyance section 26 to the posture change/alignment section 28, and are transferred by the left and right belt transfer mechanism sections 51. As a result, the green onions 2 are aligned along the conveying direction while changing their posture from a standing posture to a leaning posture (forward leaning posture), and are conveyed diagonally rearward and upward to the left, and are sequentially collected and stored in the collecting section 29. .

The green onion harvester 1 according to the present embodiment as described above includes a soil removing device 100 as a soil removing structure for removing soil adhering to the green onions 2 being transported by the transporting section 26. The soil removal device 100 is provided below each of the left and right belt conveyance mechanism sections 41, and is provided on both left and right sides of the conveyance path of the green onion 2 by the conveyance section 26. The left and right soil removing devices 100 are configured symmetrically (see FIG. 5).

The soil removing device 100 is provided on the upper side of the scraping section 27 in the direction in which the green onions 2 are conveyed by the conveying section 26 . Specifically, as shown in FIG. 4, the soil removing device 100 transports the soil removing rotary body 45 of the scraping section 27 in the rear diagonally upward direction from the front lower side to the rear upper side by the conveying section 26. It is provided on the upstream side in terms of direction. Further, with respect to the front-rear direction (left-right direction in FIG. 4) of the body of the green onion harvester 1, the soil removing device 100 is located approximately in front of the soil removing rotary body 45.

The soil removal device 100 is a device for restricting the width of the soil clod X1 attached to the green onion 2 transported by the transport section 26. The soil removing device 100 limits the width of the soil clod X1 by acting on the side of the soil clod X1 attached to the green onion 2. The soil removing device 100 is provided so as to project downwardly from the belt conveying mechanism section 41 that constitutes the conveying section 26, and removes a predetermined soil attached to the rhizome 2a of the green onion 2 being conveyed by the conveying section 26. It acts to scrape off both left and right sides of the soil clod X1, which is larger than the width of the soil clod X1. The soil removal device 100 is provided in a fixed state with respect to the conveyance section 26, and is relatively close to the soil clod X1 that moves while being attached to the green onion 2 being conveyed by the conveyance section 26, and removes the soil clod X1. It works by colliding with both left and right sides.

The soil removing device 100 will be explained using FIGS. 4 to 8. The soil removal device 100 is provided on a vertical support frame 36 that is a conveyance frame that constitutes the belt conveyance mechanism section 41 . The earth removing device 100 includes an earth removing scraper 101 that is a main body member that acts on the earth clod X1, and a support section 102 that supports the earth removing scraper 101 on the vertical support frame 36.

The soil removing scraper 101 is a narrow and elongated rectangular plate-like member, that is, a rectangular plate-like member. The soil removing scraper 101 is provided in a hanging manner with respect to the vertical support frame 36, with its longitudinal direction being orthogonal to the conveying direction of the conveying section 26 when viewed from the side.

The soil removing scraper 101 has a length such that its lower end overlaps the tip of the soil removing plate 58 located on the upper front side of the soil removing rotary body 45 in side view. That is, the soil removing scraper 101 has its lower end located within the range of the rotation locus of the soil removing rotary body 45 that rotates at a predetermined position. However, the length of the soil removing scraper 101 and the positional relationship with the soil removing rotary body 45 are not limited to this embodiment. For example, the soil removing scraper 101 may be provided so as not to overlap the rotation range of the soil removing rotary body 45 when viewed from the side.

The soil removing scraper 101 has inclined surfaces 101a on both edges in the width direction (see FIG. 8), and has a flat, substantially trapezoidal cross-sectional shape. The soil removing scraper 101 has an inner surface 101c, which is the other plate surface, whose width is slightly narrower than one plate surface, which is the outer surface 101b, due to the inclined surface 101a. In other words, the inclined surface 101a is inclined from the outer side to the inner side in the width direction of the soil removing scraper 101 from the outer side surface 101b side to the inner side surface 101c side.

The soil removing scraper 101 is provided so as to be located at both ends of the drum portion 56 of the soil removing rotary body 45 in the left-right direction (see FIG. 5). That is, the soil removing scraper 101 is provided so as to be located near the soil removing plates 58 provided at both ends of the drum portion 56 in the left-right direction. In this embodiment, the soil removing scraper 101 is provided so as to be located inside the soil removing plate 58 in the left-right direction. However, the soil removing scraper 101 may be provided at the same position as the soil removing plate 58 or at a position outside the soil removing plate 58 in the left-right direction. When the soil removing scraper 101 is provided at the same position as the soil removing plate 58 in the left-right direction, the soil removing scraper 101 is provided so as not to overlap the rotation range of the soil removing rotary body 45 in a side view.

The support part 102 supports the soil removal scraper 101 in a fixed state with respect to the vertical support frame 36. In this embodiment, the support part 102 is located at the middle part of the vertical support frame 36 in the extending direction, and supports the soil removal scraper 101 so that the soil removal scraper 101 is located immediately in front of the soil removal rotary body 45. ing.

The support section 102 includes a support base 110 fixed to the vertical support frame 36 and a movable support member 120 provided so as to be movable in the left-right direction with respect to the support base 110. The movable support member 120 is a portion of the support portion 102 to which the dirt scraper 101 is attached. In the description of the support portion 102, the direction along the extending direction of the vertical support frame 36 is referred to as the front-back direction, and the direction perpendicular to the extending direction of the vertical support frame 36 in side view is referred to as the up-down direction.

The support base 110 includes a frame support plate 111 that supports the vertical support frame 36 from below, and two front and rear joint fittings 112 that are fixed to the frame support plate 111 with the vertical support frame 36 sandwiched between the frame support plate 111 and the frame support plate 111. has. The support base 110 is provided in a fixed state with respect to the vertical support frame 36 by vertically holding the vertical support frame 36 in a manner that the frame support plate 111 and two joint fittings 112 embrace the vertical support frame 36 .

The frame support plate 111 has a plate-shaped base 113 and a protrusion 114 provided on the lower side of the plate-shaped base 113. The plate-shaped base 113 and the protrusion 114 constitute a frame support plate 111 that is an integral metal member.

The plate-shaped base 113 is a rectangular plate-shaped part, and has an upper plate surface as an upper support surface 113a that forms the upper surface of the frame support plate 111, and a lower plate surface as a lower surface 113b from which the protrusion 114 projects. . The plate-shaped base 113 has a longer dimension than the vertical support frame 36 in the left-right direction. In this embodiment, the plate-like base 113 has a length approximately three times the width of the vertical support frame 36 in the left-right direction.

The plate-shaped base 113 has a vertical support frame 36 positioned at its center in the left-right direction. That is, a predetermined width portion of the upper support surface 113a at the center in the left-right direction becomes a contact surface portion with the lower surface 36a of the square pipe-shaped vertical support frame 36.

The protruding portion 114 is formed at the center portion of the lower surface 113b of the plate-shaped base 113 in the left-right direction, and has a predetermined width over the entire length of the plate-shaped base 113 in the front-rear direction. The protruding portion 114 has a width that is approximately the same as the width of the vertical support frame 36.

The protruding portion 114 is a portion that has a substantially “U”-shaped cross-sectional shape by the left and right side portions 114a and the bottom portion 114b. The protruding portion 114 forms a tunnel-shaped space portion 114c, which is open on both sides in the front-rear direction, together with the intermediate portion of the plate-shaped base portion 113 in the left-right direction.

The joint fitting 112 is a so-called hat-shaped fixing fitting, and is composed of an upper surface portion 112a and left and right side portions 112b, and a substantially “U”-shaped holding portion that follows the outer shape of the vertical support frame 36, and both ends of the holding portion. It has a fixing surface portion 112c formed on the side. The joint fitting 112 has an upper surface portion 112a along the upper surface 36b of the vertical support frame 36, and left and right side portions 112b along the left and right side surfaces 36c of the vertical support frame 36. The fixed surface portion 112c is bent from the lower ends of the left and right side portions 112b toward the left and right outer sides at right angles to the side portions 112b.

The joint fittings 112 are supported by fixing bolts 115 with the left and right fixing surfaces 112c overlapping from above the left and right overhanging parts from the vertical support frame 36 of the plate-like base 113 of the frame support plate 111. It is fixed to the plate 111. A nut portion 112e into which a fixing bolt 115 is screwed is provided on the upper surface side of each fixing surface portion 112c. The fixing bolt 115 passes through the bolt hole of the plate-shaped base 113 and the fixing surface portion 112c from below, and is screwed into the nut portion 112e.

The support base 110 is fixed to the vertical support frame 36 with the vertical support frame 36 sandwiched therebetween by the fastening force of the fixing bolts 115 . In this embodiment, each joint fitting 112 is fixed to the frame support plate 111 at two locations, one on each of the left and right fixing surfaces 112c. The fixing portions of the two front and rear joint fittings 112 by the fixing bolts 115 are located near the four corners of the plate-like base 113.

In this way, the support base 110 forms a rectangular through hole along the outer shape of the vertical support frame 36 with the frame support plate 111 and the joint metal fittings 112, and the vertical support frame 36 is inserted into this through hole. It is fixed by a fixing bolt 115 in a penetrating manner.

According to the mounting structure of the support base 110 on the vertical support frame 36 as described above, the position of the support base 110 on the vertical support frame 36 can be changed with the fixing bolt 115 loosened. In other words, by releasing the fastening bolts 115, the support base 110 can be moved along the vertical support frame 36 while the vertical support frame 36 is passed through the through hole formed by the frame support plate 111 and the joint metal fittings 112. It becomes possible to move in the front-back direction (see arrow B1 in FIG. 6). Then, the support base 110 is fixed to the vertical support frame 36 by tightening the fixing bolt 115 at an arbitrary position.

In this way, the support base 110 is provided movably with respect to the vertical support frame 36 along the extending direction of the vertical support frame 36. Thereby, the support part 102 having the structure in which the movable support member 120 is attached to the support base 110 is provided so as to be movable with respect to the vertical support frame 36 along the extending direction of the vertical support frame 36. By moving the support base 110 with respect to the vertical support frame 36, the soil removal scraper 101 supported by the support base 110 via the movable support member 120 also moves integrally with the support base 110 in the front-rear direction. . That is, the soil removing device 100 is provided movably with respect to the vertical support frame 36 along the extending direction of the vertical support frame 36.

Adjustment of the position of the support part 102, that is, the position of the soil removal device 100, can be freely performed within the extension range of the vertical support frame 36. The position of the support part 102 is adjusted, for example, in a range from a position in the middle of the excavation conveyor 32 in the front-rear direction to a position immediately in front of the dirt-dropping rotary body 45.

In this embodiment, spare bolt holes 113c are formed at the center in the front-rear direction on both left and right sides of the plate-shaped base 113 of the frame support plate 111. The bolt hole 113c can be used for fixing the joint fitting 112 with the fixing bolt 115. A third joint fitting 112 may be provided between the front and rear joint fittings 112 by using the bolt hole 113c at the front and rear center. It may be fixed using

The movable support member 120 is a plate-shaped member bent in a substantially "L" shape, and has a fixed surface part 121 whose thickness direction is in the up-down direction, and a support surface part 122 whose thickness direction is in the left-right direction. The fixed surface portion 121 and the support surface portion 122 are both substantially rectangular plate-shaped portions.

The movable support member 120 is fixed to the frame support plate 111 by fixing bolts 125 with the fixed surface portion 121 overlapping the bottom surface portion 114b of the protrusion portion 114 of the frame support plate 111 from below. Inside the space portion 114c, a nut portion 114d into which a fixing bolt 125 is screwed is provided on the upper surface side of the bottom portion 114b. The fixing bolt 125 passes through bolt holes in the fixing surface portion 121 and the bottom surface portion 114b from below and is screwed into the nut portion 114d.

In this embodiment, the movable support member 120 is fixed to the protruding portion 114 of the frame support plate 111 with fixing bolts 125 at two locations in the front and back of the fixed surface portion 121 . The fixing portion by the fixing bolt 125 is located near both the front and rear edges of the fixing surface portion 121, and is also located at the center of the protrusion portion 114 in the width direction.

In the fixing surface portion 121, the hole through which each fixing bolt 125 passes is a linear elongated hole 121a whose longitudinal direction is the left-right direction. That is, in the fixed surface portion 121, two elongated holes 121a are formed in the front and rear in parallel along the left-right direction.

According to such an attachment structure of the movable support member 120 to the frame support plate 111, the position of the movable support member 120 in the left-right direction relative to the frame support plate 111 can be changed with the fixing bolt 125 loosened. That is, by releasing the fastening of the fixing bolt 125, the movable support member 120 can move in the left-right direction along the longitudinal direction of the elongated hole 121a (see arrow C1 in FIG. 8). Then, the movable support member 120 is fixed to the frame support plate 111 by fastening the fixing bolt 125 at an arbitrary position.

In this way, the movable support member 120 is provided so as to be movable in the left-right direction with respect to the frame support plate 111 of the support base 110. By moving the movable support member 120 with respect to the support base 110, the dirt scraper 101 supported by the movable support member 120 moves integrally with the movable support member 120 in the left-right direction. By changing the position of the soil-removing scraper 101 in the left-right direction, the interval D1 between the left and right soil-removing scrapers 101 changes.

In this embodiment, in the protrusion portion 114, a spare bolt hole 114e and a nut portion 114d communicating therewith are provided at the rear of the bottom surface portion 114b. That is, the fixing portions formed by the bolt holes 114e and the nut portions 114d are provided at three locations at predetermined intervals in the front-rear direction, and the movable support member 120 is provided at two fixing locations on the front side or two locations on the rear side. The fixing portion is selectively used to fix it to the frame support plate 111. Thereby, the fixed position of the movable support member 120 with respect to the frame support plate 111 can be adjusted in the front-rear direction.

The support surface portion 122 is a portion of the movable support member 120 to which the soil removal scraper 101 is attached. The support surface portion 122 supports the soil removal scraper 101 in a fixed state.

The soil removing scraper 101 is fixed to the support surface part 122 by fixing screws 126 and 127 at two upper and lower places, with its upper part overlapping the front part of the support surface part 122 from the inner surface 122a side. The fixing screws 126 and 127 pass through the circular screw holes formed in the soil removal scraper 101 and the support surface part 122 from the left and right inner sides, and are fastened and fixed by nuts 128. Among the fixing parts by the fixing screws 126 and 127, the fixing part by the upper fixing screw 126 is provided at the upper part of the support surface part 122, and the fixing part by the lower fixing screw 127 is provided at the lower part of the support surface part 122. It is being

Regarding the mounting structure of the soil-removing scraper 101, the soil-removing scraper 101 is rotatably provided with respect to the support surface portion 122 that constitutes the support portion 102, with the left-right direction of the machine body as the rotation axis direction. That is, the soil removal scraper 101 is rotatably provided with respect to the support part 102 fixed to the vertical support frame 36, so that it can be rotated in the left-right direction with respect to the vertical support frame 36 via the support part 102. It is provided so as to be rotatable in the direction of the moving axis.

The soil removing scraper 101 is rotated by displacing the position of the lower fixing screw 127 with the upper fixing screw 126 fixed to the support surface portion 122 as a fulcrum. Therefore, in the support surface portion 122, the hole through which the lower fixing screw 127 passes is an arc-shaped elongated hole 122b. That is, the elongated hole 122b has a curved shape along an arc centered on the center position O1 of the circular screw hole through which the upper fixing screw 126 passes, when viewed from the side.

According to this mounting structure of the soil removing scraper 101 to the support surface part 122, the angle of the soil removing scraper 101 relative to the support surface part 122 when viewed from the side can be changed with the upper and lower fixing screws 126, 127 unfastened. It becomes possible. That is, by releasing the fastening of the fixing screws 126 and 127, the soil removing scraper 101 can be rotated about the portion fixed by the upper fixing screw 126 (see arrow E1 in FIG. 6). Then, by tightening the fixing screws 126 and 127 at arbitrary positions, the dirt scraper 101 is fixed to the support surface part 122.

In the present embodiment, the soil removing scraper 101 has a front rotation end position that extends in the longitudinal direction perpendicular to the front-rear direction, as shown in FIG. , is provided on the rear side so as to be rotatable within a predetermined angular range α1. The angular range α1 is, for example, about 50°. Further, in this embodiment, the inclination angle α2 of the soil removing scraper 101 at the front rotation end position with respect to the vertical direction O2 is approximately 35°. Note that the numerical values of the rotation range and inclination angle of the soil removal scraper 101 according to the present embodiment are merely examples, and the rotation range and inclination angle of the soil removal scraper 101 are not particularly limited.

Further, in the movable support member 120, an inclined surface portion 122c is formed at the rear end edge of the support surface portion 122, and is bent left and right outward with respect to the main body portion of the support surface portion 122. The left and right support surface portions 122 gradually widen the distance between them from the front side to the rear side due to the inclined surface portion 122c.

Since the support surface portion 122 has the inclined surface portion 122c, when the soil clod X1 attached to the green onion 2 is scraped off by the soil removal scraper 101, the scraped soil passing on the left and right outer sides of the support surface portion 122 is removed from the support surface portion 122. The sloped surface portion 122c has the effect of guiding the soil to the outside so that it does not enter the left and right inner sides, that is, the side of the green onion 2 being transported. Further, due to the outward bending of the inclined surface portion 122c of the support surface portion 122, when the green onion 2 passing through the left and right inner sides of the soil removal scraper 101 and the support surface portion 122 passes through the rear end of the support surface portion 122, The green onion 2 is prevented from being damaged by the rear edge of the support surface portion 122.

According to the green onion harvesting machine 1 according to the present embodiment having the above-described configuration, the machine body can be made smaller and smaller without increasing the size of the device configuration for removing soil attached to the green onions 2 during transportation. It is possible to reduce the weight and obtain good scraping performance.

The green onion harvester 1 according to the present embodiment includes, as a device configuration for removing soil, a soil removing rotary body 45 and a soil removing device 100 including a soil removing scraper 101 provided on the front side thereof. Therefore, soil removal performance can be improved compared to a configuration in which only the soil removal rotary body 45 is provided as a device configuration for removing soil.

Specifically, before the soil clod X1 attached to the green onion 2 reaches the soil removing rotary body 45, it is scraped by the left and right soil removing scrapers 101 and its width is limited. In other words, the left and right soil removing scrapers 101 can remove soil outside the width of the soil removing rotary body 45 before the soil removing rotary body 45 removes the soil. Thereby, it becomes possible to effectively remove soil using the soil removing rotary body 45. Note that depending on the size of the soil clod X1 and the position of attachment to the green onion 2, the support surface portion 122 of the movable support member 120 to which the soil removal scraper 101 is attached also acts on the soil clod X1.

By improving the soil removal performance, it is possible to suppress problems such as poor conveyance of the green onions 2 and detachment of the conveyor belt 44 caused by excessive soil adhering to the green onions 2 being brought into the conveying section 26. Can be done. In addition, by improving soil removal performance, it is possible to suppress soil from being caught in the left and right belt transfer mechanisms 51, 51, which inherit the green onions 2 from the conveyance section 26, so that the green onions 2 are not scratched or transferred by the belt. It is possible to prevent problems from occurring in the mechanism section 51. Furthermore, by improving the soil removal performance, it is possible to suppress soil from entering the branch portion of the leaf portion 2b of the green onion 2. Thereby, it is possible to reduce the time and effort of the worker in post-processing such as preparation after harvesting the green onions 2, the burden on the worker can be reduced, and the work efficiency can be improved.

Moreover, since the soil removing device 100 is configured to support the soil removing scraper 101 that acts on the soil clod X1 in front of the soil removing rotary body 45, the soil removing device 100 can remove soil without increasing the left and right width of the soil removing rotary body 45. Performance can be improved. Further, the soil removing device 100 utilizes the transporting operation of the green onions 2 by the transporting section 26, and the soil removing device 100 itself does not require power to act on the clods of soil. Therefore, there is no need for a structure for transmitting power, a drive source, etc., and the function section for removing dirt can be configured with a simple structure. For these reasons, efficient soil removal can be performed without increasing the size and weight of the device. In other words, it is possible to save space with respect to the structure of the dirt removal device, and it is possible to achieve both a reduction in size and weight of the machine body and an improvement in dirt removal performance.

In the soil removing device 100 according to the present embodiment, the soil removing scraper 101 is provided so as to be rotatable in the front-rear direction, and the inclination angle can be adjusted. According to such a configuration, it is possible to adjust the mode of action of the soil removing device 100 on the soil clod X1 according to the soil quality and soil condition of the field, which affect the size of the soil clod X1 adhering to the green onion 2. becomes.

Specifically, for example, when the soil removing scraper 101 is located at the front rotation end and is in a posture perpendicular to the conveying direction of the conveying section 26, the entire longitudinal direction of the soil removing scraper 101 is simultaneously The clod of earth X1 will collide with . Therefore, if the earth clod X1 is relatively hard to collapse, the resistance caused by the earth clod X1 colliding with the soil removal scraper 101 becomes large, and the conveyance of the green onions 2 by the conveyance unit 26 may be hindered. Therefore, by rotating the soil removal scraper 101 backward to provide a relief angle, it becomes possible to shift the timing at which the soil clod X1 collides with the soil removal scraper 101 depending on the position of the soil removal scraper 101 in the longitudinal direction. Thereby, it is possible to disperse and reduce the resistance caused by the collision of the soil clod X1 with the soil removal scraper 101, so that it is possible to suppress the conveyance of the green onions 2 by the conveyance unit 26 from being hindered.

On the other hand, if the clod X1 is relatively easy to collapse, the collision of the clod X1 with the scraper 101 will have relatively little effect on the conveying section 26. Therefore, for example, by positioning the earth removing scraper 101 at the front rotation end, the earth clod X1 collides with the entire longitudinal direction of the earth removing scraper 101 at the same time, and the impact makes it easier to drop the earth clod X1. be able to. In this way, the structure for adjusting the inclination angle of the soil removing scraper 101 makes it possible to improve the soil removing performance while obtaining good conveyance performance.

In the soil removing device 100 according to the present embodiment, the support portion 102 includes a support base 110 fixed to the vertical support frame 36 and a soil removal scraper 101 that is provided so as to be movable in the left and right directions with respect to the support base 110. and a movable support member 120 for supporting. According to such a configuration, the soil removal scraper is adjusted according to the size of the soil clod X1, which changes depending on the soil quality and soil condition of the field, the width of the soil removal rotary body 45, the cultivation form of the green onion 2 in the ridge 3, etc. It becomes possible to adjust the left and right positions of 101. Thereby, it is possible to obtain good soil removal performance while ensuring a transport path for the green onions 2 by the transport unit 26.

Further, the soil removing device 100 according to the present embodiment is provided so as to be movable in the front and rear directions with respect to the vertical support frame 36. According to such a configuration, the position of the soil removing scraper 101 can be adjusted in the front-rear direction, so that, for example, the timing at which the soil removing scraper 101 acts on the soil clod X1 in relation to the positional relationship with the soil removing rotary body 45 can be adjusted. can be adjusted. This makes it possible to perform efficient soil removal depending on the soil quality and soil condition of the field.

Moreover, in this embodiment, the soil removing scraper 101 has inclined surfaces 101a on both edges in the width direction, and has a flat, substantially trapezoidal cross-sectional shape. According to such a configuration, the soil removing scraper 101 can act as a blade-shaped portion on the soil clod X1, and it becomes possible to efficiently scrape off the soil. Further, since the soil removing scraper 101 has the inclined surfaces 101a on both edges in the width direction, the left and right soil removing scrapers 101 can be used in common as a component. As a result, it is possible to obtain an effect that, for example, incorrect attachment of parts can be suppressed.

[Second embodiment]
A second embodiment of the present invention will be described using FIGS. 9 to 13. Note that configurations and the like that are common to the first embodiment will be given the same reference numerals, etc., and the description will be omitted as appropriate, and mainly the points that are different from the first embodiment will be described. Further, FIG. 11 corresponds to a view taken in the direction of arrow F1 in FIG. The soil removing device 100 according to the present embodiment differs from the first embodiment in the soil removing scraper 201 as a main body member and its supporting structure.

The left and right soil removing devices 100 according to the present embodiment are configured symmetrically, similarly to the first embodiment. The soil removing device 100 according to the present embodiment includes a soil removing scraper 201 that is a main body member that acts on the earth clod X1, and a support section 102 that supports the soil removing scraper 201 on the vertical support frame 36.

The soil scraper 201 is a substantially rectangular plate-shaped member. The soil removing scraper 201 is provided in a hanging manner with respect to the vertical support frame 36, with its longitudinal direction being perpendicular to the conveying direction of the conveying section 26 when viewed from the side.

The soil removing scraper 201 has a length such that its lower end does not overlap the tip of the soil removing plate 58 located on the upper front side of the soil removing rotary body 45 when viewed from the side. That is, the soil removing scraper 201 has its lower end located outside the range of the rotation locus of the soil removing rotary body 45 rotating at a predetermined position. However, the length of the soil removing scraper 201 and the positional relationship with the soil removing rotary body 45 are not limited to this embodiment. For example, the soil removing scraper 201 may be provided so as to overlap the rotation range of the soil removing rotary body 45 when viewed from the side.

The soil removing scraper 201 has a chamfered portion 201a at the lower front corner. The chamfered portion 201a is formed to cover approximately 1/4 of the length of the soil removal scraper 201 and approximately 1/3 of the width of the soil removal scraper 201 in the lateral direction. A chamfered portion 122d is formed at the lower front corner of the support surface portion 122 of the movable support member 120 so as to overlap the chamfered portion 201a of the dirt removal scraper 201 when viewed from the side.

The soil removing scraper 201 is provided so as to be located at both ends of the drum portion 56 of the soil removing rotary body 45 in the left-right direction (see FIG. 11). That is, the soil removing scraper 201 is provided so as to be located near the soil removing plates 58 provided at both ends of the drum portion 56 in the left-right direction. In this embodiment, the soil removing scraper 201 is provided so as to be located inside the soil removing plate 58 in the left-right direction. However, the soil removing scraper 201 may be provided at the same position as the soil removing plate 58 or at a position outside the soil removing plate 58 in the left-right direction. When the soil removing scraper 201 is provided at the same position as the soil removing plate 58 in the left-right direction, the soil removing scraper 201 is provided so as not to overlap the rotation range of the soil removing rotary body 45 in a side view.

The support part 102 supports the soil removal scraper 201 in a fixed state with respect to the vertical support frame 36. In this embodiment, the support part 102 is located at the middle part of the vertical support frame 36 in the extending direction, and supports the soil removal scraper 201 so that the soil removal scraper 201 is located immediately in front of the soil removal rotary body 45. ing.

In the movable support member 120 constituting the support portion 102, the support surface portion 122 is a portion to which the dirt scraper 201 is attached. The support surface portion 122 supports the soil removal scraper 201 in a fixed state.

The soil removing scraper 201 is fixed to the support surface part 122 by fixing screws 226 at two places, upper and lower, while overlapping the support surface part 122 from the inner surface 122a side. The soil removing scraper 201 has substantially the same width as the support surface portion 122 in the front-rear direction, and its front edge coincides with the front edge of the support surface portion 122 . The soil removing scraper 201 has a dimension longer than the support surface portion 122 in the vertical direction, and has a lower portion protruding downward from the lower end of the support surface portion 122.

The fixing portions formed by the two fixing screws 226 are provided at the intermediate portion of the support surface portion 122 in the front-rear direction (width direction) at a predetermined interval in the vertical direction. The fixing screw 226 passes through a circular screw hole formed in the soil removal scraper 201 and the support surface portion 122 from the left and right inner sides, and is fastened and fixed with a nut 228 .

Regarding the mounting structure of the soil removal scraper 201, the soil removal scraper 201 is provided so as to be movable in the vertical direction with respect to the support surface portion 122 that constitutes the support portion 102. That is, the soil scraper 201 is provided so as to be movable in the vertical direction with respect to the support part 102 fixed to the vertical support frame 36, so that the soil removal scraper 201 can be vertically movable with respect to the vertical support frame 36 via the support part 102. It is adjustable.

The moving direction for adjusting the position of the soil removing scraper 201 is a direction perpendicular to the conveying direction of the conveying section 26 (the extending direction of the vertical support frame 36) in a side view. In this embodiment, the moving direction of the soil removing scraper 201 is a direction inclined at about 35 degrees with respect to the vertical direction, but the angle of inclination is not limited.

The soil removing scraper 201 is moved relative to the support surface part 122 by vertically displacing the position of the fixing part fixed by the two fixing screws 226 to the support surface part 122. Therefore, in the support surface portion 122, the holes through which the two fixing screws 226 are passed are elongated holes 122e. That is, the elongated hole 122e has a linear shape extending in the vertical direction when viewed from the side.

According to this mounting structure of the soil removing scraper 201 to the support surface part 122, it is possible to change the vertical position of the soil removing scraper 201 with respect to the support surface part 122 with the upper and lower fixing screws 226 unfastened (Fig. 12, see arrow G1). Then, by tightening the fixing screw 226 at an arbitrary position, the soil removing scraper 201 is fixed to the support surface part 122.

In the present embodiment, as shown in FIG. 12, the soil removing scraper 201 has a rising end position in which approximately 1/6 of the lower portion protrudes downward from the support surface portion 122, and approximately It is provided so as to be movable in the vertical direction, with the lower end position being the state in which 1/2 part protrudes downward from the support surface portion 122 (the state shown by the two-dot chain line). Note that the movement range of the soil removal scraper 201 according to this embodiment is just an example, and the movement range of the soil removal scraper 201 is not particularly limited.

Further, the dirt removing scraper 201 has a guide surface portion 201c bent left and right outward with respect to the main body portion of the dirt removing scraper 201 at the rear end edge. The guide surface portion 201c is formed to have approximately the same inclination angle as the slope portion 122c of the support surface portion 122, and the soil removal scraper 201 moves the guide surface portion 201c at a horizontal direction with respect to the slope portion 122c of the support surface portion 122. It is overlapped from the inside and the back. According to such a configuration, the overlapping portion of the inclined surface portion 122c and the guide surface portion 201c functions as a guide for vertical movement of the soil removal scraper 201 with respect to the support surface portion 122.

Moreover, according to the structure in which the soil removing scraper 201 has the guide surface portion 201c and the rear edge portion follows the bent shape of the inclined surface portion 122c of the support surface portion 122, the following effects can be obtained. That is, an effect is obtained in which the soil that is scraped off by the soil removal scraper 201 and passes through the right and left outer sides of the support surface section 122 is guided to the outside so that it does not enter the left and right inner sides of the support surface section 122 and the soil removal scraper 201. Also, due to the bent shape of the rear edge portions of the support surface portion 122 and the soil removal scraper 201, the green onions 2 passing through the left and right inner sides of the soil removal scraper 201 and the support surface portion 122 are bent at the rear edges of the support surface portion 122 and the soil removal scraper 201. The green onion 2 is prevented from being damaged by the support surface part 122 and the rear edge of the soil removal scraper 201 when passing through the section.

According to the green onion harvesting machine 1 according to the present embodiment having the above-described configuration, as in the case of the first embodiment, the device configuration is large-sized for removing soil adhering to the green onions 2 being transported. It is possible to reduce the size and weight of the machine body without causing any damage, and it is also possible to obtain good scraping performance.

In the soil removing device 100 according to this embodiment, the soil removing scraper 201 is provided so that its height can be adjusted. According to such a configuration, it is possible to adjust the mode of action of the soil removing device 100 on the soil clod X1 according to the soil quality and soil condition of the field, which affect the size of the soil clod X1 adhering to the green onion 2. becomes.

According to the soil removing scraper 201 according to the present embodiment, in the soil removing device 100, the soil adhering to the comparatively upper portion of the green onion 2 near the portion to be held by the left and right belt conveyance mechanism sections 41 is mainly removed. It is possible to drop it to Thereby, it is possible to effectively prevent soil from entering the branch portion of the leaf portion 2b of the green onion 2, and it is possible to reduce the labor of the operator in post-processing of the green onion 2, such as preparation after harvesting. In addition, as the soil adhering to the relatively upper portion of the green onion 2 is removed, the left and right belts are transferred to sandwich the lower portion of the green onion 2 than the portion of the green onion 2 that is held by the left and right belt conveyance mechanisms 41, 41. It is possible to effectively suppress dirt from getting stuck in the mechanism parts 51, 51.

Further, the soil removing scraper 201 according to the present embodiment acts on soil attached to a relatively upper portion of the green onion 2 near the portion held between the left and right belt conveyance mechanisms 41, 41. Therefore, bending of the green onion 2 caused by the collision of the soil removal scraper 201 with the clod of soil X1 can be suppressed, and the quality of the green onion 2 can be maintained. Further, since the soil removing scraper 201 acts only on the relatively upper portion of the green onion 2, it is possible to suppress the transportation of the green onion 2 by the conveying section 26 from being hindered by the collision resistance of the soil clod X1 against the soil removing scraper 201. can.

Further, in the soil removing device 100, the soil removing scraper 101 according to the first embodiment and the soil removing scraper 201 according to the second embodiment can be replaced and used depending on field conditions such as soil quality. Further, depending on the field conditions, the soil removing device 100, 200 may be used with the soil removing scraper 101, 201 removed from the movable support member 120. When the soil removing scrapers 101, 201 are removed, the movable support member 120 acts as a soil removing portion. Here, the soil removing scrapers 101 and 201 are fixedly supported by the movable support member 120 by fixing screws 126, 127, and 226, so that they can be easily attached and detached. From these facts, the scope of application of the green onion harvester 1 to field conditions can be expanded by simple operation of the soil removal structure.

The description of the embodiments described above is an example of the present invention, and the green onion harvester according to the present invention is not limited to the embodiments described above. Therefore, it goes without saying that various changes can be made to the embodiments other than those described above, depending on the design, etc., as long as they do not deviate from the technical idea of the present invention. Furthermore, the configurations of the embodiments described above can be combined as appropriate.

In the embodiment described above, the soil removing device 100 is provided on both the left and right sides of the transport path of the green onions 2 by the transport unit 26, but it may be provided on one side of the left and right sides. Further, in the embodiment described above, the left and right soil removing devices 100 are configured to be bilaterally symmetrical, but are not limited to a bilaterally symmetrical configuration.

1 Green onion harvester 2 Green onion 3 Ridge 4 Traveling machine body 25 Digging section 26 Transport section 27 Scraping section 36 Vertical support frame (transport frame)
41 Belt conveyance mechanism section (conveyor)
45 Soil removal rotary body 100 Soil removal device 101 Soil removal scraper (main body member)
102 Support part 110 Support base 111 Frame support plate 112 Joint metal fittings 120 Movable support member 122 Support surface part 122b Long hole 122e Long hole 201 Soil removal scraper (main body member)

Claims (5)

A green onion harvesting machine that has a self-propelled traveling body and digs up and harvests green onions from the ridges while moving the machine forward,
a digging part that digs up green onions from the ridge;
a conveyance unit that conveys the green onions dug up by the digging unit rearward;
a scraping unit for scraping off clods of soil adhering to the green onions transported by the transport unit;
A soil removing device is provided on the upper side of the scraping section in the direction in which the green onions are transported by the conveying section, and is configured to limit the width of the soil clods attached to the green onions ;
The conveyance unit has a pair of left and right conveyors extending in the front-rear direction in a plan view, and conveys the green onion while being sandwiched between the pair of left and right conveyors,
The soil removal device includes a main body member that acts on the soil clod, and a support portion that supports the main body member in a fixed state with respect to a transport frame that constitutes the transport body.
A green onion harvester characterized by: The green onion harvester according to claim 1, wherein the main body member is provided such that the position of the main body member can be adjusted with respect to the support portion in a rotation direction with a left-right direction of the machine body as a rotation axis direction. Machine. The green onion harvester according to claim 1, wherein the main body member is provided so that its height can be adjusted. The support portion includes a support base fixed to the transport frame, and a movable support member that is provided to be movable in the left-right direction with respect to the support base and receives attachment of the main body member. The green onion harvesting machine according to claim 2 or claim 3. 5. The soil dropping device according to any one of claims 1 to 4, wherein the soil removing device is provided so as to be movable with respect to the transport frame along the extending direction of the transport frame. Onion harvester.

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