JP2002262630A - Walking root crop harvester and auxiliary wheel device for walking root crop harvester - Google Patents

Abstract

(57) [Problem] To provide a harvester excellent in maneuverability that can be effectively used for mechanically harvesting root vegetables cultivated on mulched ridges. SOLUTION: A pair of left and right drive wheels 2 straddling a wide flat ridge.
In a walking-type root crop harvesting machine in which the harvesting unit B is biased laterally to one side, the pinch pulling and conveying device 12 for pinching the leaf stem Wb protruding from the multi-sheet S and conveying the leaf stem Wb upward is provided on the ground. It is inclined from the near to the rear and upward, and the leaf cutting device 60 is arranged near the lower part of the starting end of the nipping and pulling and conveying device 12, and the soil breaking body which is protruded from the lateral outside of the ridge to below the root vegetables W. An auxiliary wheel device provided with a plurality of spike members 71 which are disposed behind the cutting portion of the leaf cutting device 60 behind the cut portion of the leaf cutting device 60, and on which the harvesting portion is unevenly distributed, are provided with a plurality of spike members 71 which work on the running ground. 7
0 is attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking type harvester used for harvesting root vegetables such as onions, carrots, radishes, garlic, and the like, and a structure of a gauge wheel mounted on the harvester.

[0002]

2. Description of the Related Art As an onion harvesting machine which is an example of the above-mentioned harvesting machine, for example, an onion harvesting machine disclosed in Japanese Patent Application Laid-Open No. 9-191741 is known. This onion harvester is a vertical-turn type leaf stem pulling device that lifts onion leaf stems in a field by moving the locking claws protruding toward the front side and moving diagonally upward from near the ground to the rear and upwards. A lateral-leaf type leaf stem pulling device that lifts the leaf stem lifted by the leaf stem pulling device and moves it upward and obliquely upward with a locking claw protruding in the lateral direction to scrape the leaf stem. A pinch pulling and conveying device that pinches and transports the leaf stems picked up by the leaf stem raising device and pinches and conveys it obliquely rearward and upward, and by moving the machine forward along the onion strips, first falls down The leaf stem is lifted by the leaf stem pulling device, and then the lifted leaf stem is lifted by the left and right leaf stem lifting devices and guided to the start end of the pinch pulling transport device, and the leaf stem is pinched by the pinch pull transport device. Then lean backward By transporting upwards, the onions are pulled out of the field, and then the leaf onion processing, etc. are performed to release the onion body to the field scene, and four onions are planted. By reciprocating over a wide flat ridge, two strips on the left side in the traveling direction can be harvested. In addition, in this onion harvester, in order to facilitate the extraction of the onion, a crusher which expands and softens the soil around the two onions to be harvested in one stroke is provided on the left side of the ridge and in the center on the ridge. From the ridge.

[0003] The above-mentioned configuration is designed to cope with the so-called open-field cultivation of onions in which the soil of the ridges is exposed. Since the roots are prevented from being pulled out by the multi-sheet hung on the ridge, it is impossible to carry out the desired pulling and conveyance. I couldn't do it.

[0004] Therefore, conventionally, when harvesting with a ridge that has been multi-hung, the multi-sheet has been manually removed before harvesting with a harvester. However, the leaf stems protruding from the planting holes of the multi-sheet are widely protruding around, and it is not possible to easily turn up only the multi-sheet, but to remove it while cutting through the multi-sheet, this sheet removal work Requires a great deal of labor and time.

[0005] Therefore, as disclosed in Japanese Patent Application Laid-Open No. 2000-270641, a means has been proposed which can easily harvest multi-cultivated onions by slightly modifying the structure of a conventional walking-type onion harvesting machine. . In this proposal,
By moving the machine along the ridges, the leaf stems protruding above the multi-sheet are pulled up by the leaf stem pulling device, immediately taken over by the pinch pulling and transporting device, and the cut leaf stem is cut immediately by the pinch pulling transport device. The onion left behind on the ridge can be recovered by removing it from the back and then turning over the multi-sheet that has been cut and removed and the leaf stalk has become easy to turn over. .

[0006]

However, it has been found that a new problem occurs in harvesting onions cultivated in a mulch using the above-mentioned means. In other words, in the process of cutting the leaf stems on the multi-sheet by running the aircraft across the ridge, the harvesting part is unevenly distributed on one side to the ridge, so the forward resistance acting on the harvesting part is Not only will the left and right drive wheels be biased, but it will not be possible for the mulch to hang over the ridge on which the multi-seat is hung, so a long mulch will enter from the outside of the ridge. As a result, the forward resistance acting on the crusher also acts on the left and right drive wheels in a biased manner, and the entire body tends to skew to the side where the harvesting unit is unevenly distributed. In particular,
If dead leaves or weeds are accumulated or muddy on the bottom of the ridge, the drive wheels are liable to slip and become more inclined. Therefore, a driver who controls the aircraft while following the walk from the rear of the aircraft must frequently perform a direction correction operation or apply force to the steering wheel to prevent the body from swinging, which requires a great deal of labor for the operation. Was sometimes needed.

The present invention has been made in view of such a situation, and has a controllability that can be effectively utilized for mechanically harvesting root crops cultivated on mulched ridges. It is an object of the present invention to provide a harvester excellent in the above, and an auxiliary wheel device that can be suitably used for the harvester.

[0008]

Means for Solving the Problems [Structure, operation and effect of the invention according to claim 1]

(Structure) According to the first aspect of the present invention, the harvesting portion at the front portion of the fuselage is biased laterally to one side with respect to a pair of left and right drive wheels disposed at the rear portion of the fuselage at right and left intervals over a wide flat ridge. A walk-type root crop harvesting machine arranged so as to hold a leaf stem protruding from a planting hole of a multi-sheet hung on a ridge in the harvesting section and transporting the leaf stem obliquely upward and rearward. The pulling and conveying device is inclinedly provided from near the ground toward the rear and upward, and the leaf cutting device is provided near the lower portion of the starting end of the nipping and pulling and conveying device, and is inserted from the lateral outside of the ridge on which the multi-sheet is hung. A soil-breaking body that enters below the root vegetables planted on the ridges is provided at a position behind the cutting point of the leaf cutting device, and the driving wheel on the side where the harvesting unit is unevenly distributed is embedded in the running ground. Act A plurality of spike members.

(Operation) According to the above configuration, when the machine body runs along the ridge, the leaf stem protruding on the multi-sheet is pinched by the pinch-pulling-up conveying device and is conveyed upward and rearward. The root vegetable body below the sheet is pulled up from the ridge together with the multi-sheet, the leaf stem reaches the cutting point of the leaf cutting device for the multi-cut until it is largely pulled up, and the cut leaf stem is continuously nipped and raised and conveyed. The leafy root vegetables are left on ridges under the multi-sheet. Thereafter, the multi-sheet in a state in which the protruding leaf stem has been cut and removed is turned up and removed manually or by a winding device, and the root vegetable main body left on the ridge is collected by appropriate means.

In this case, at least the drive wheel on the side where the harvesting portion is unevenly distributed holds the ground firmly via the spike member and exerts a propulsive force without slipping. Even if the aircraft is caused to swing to the side where the harvesting unit is unevenly distributed due to the forward resistance acting on the arranged harvesting unit or the devastator, the drive wheels with spike members move the aircraft straight while enduring this.

(Effects) Therefore, according to the first aspect of the present invention, when harvesting root crops cultivated on mulched ridges, the aircraft body is swung due to uneven forward resistance acting on the crushing body. Can be suppressed by the drive wheels themselves, so that frequent aircraft orientation correction operations and steering operations while applying a large force are not required, thereby improving maneuverability.

[Structure, operation and effect of the invention according to claim 2]

(Structure) According to a second aspect of the present invention, in the first aspect of the present invention, the spike member is constituted by a plate piece whose plate surface is oriented in the wheel rotation direction. .

(Function / Effect) According to the above configuration, the spike member made of the plate piece whose surface is directed in the wheel rotation direction exerts a large propulsive force, and the spike member that is stuck in the ground prevents the body from swaying. To bring resistance,
The above-mentioned effect of the invention of claim 1 is promoted.

[Structure, operation and effect of the invention according to claim 3]

(Structure) According to a third aspect of the present invention, in the first or the second aspect of the present invention, the spike member is configured to have an operating position protruding from the wheel outer diameter and a retracted position retracting toward the center from the wheel outer diameter. And is configured to be switchable.

(Operation / Effect) According to the above configuration, at the time of harvesting work in a field, the spike member is made to protrude to the working posture, so that it is possible to perform traveling excellent in straightness while suppressing lateral vibration of the body. Also, when traveling outside the field, by switching the spike member to the retracted position, smooth traveling without unpleasant vibration can be performed, and depending on traveling conditions, a general vehicle without a wheel with a spike member and a spike member is not provided. It is possible to easily obtain a grounding form suitable for driving conditions without attaching a spike member to the drive wheel without performing troublesome operation such as replacing with a simple wheel, and it will be excellent in handleability .

[Structure, operation and effect of the invention according to claim 4]

(Structure) According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the sheet turning acting on the skirt of the multi-sheet hung on the ridge is provided in front of the soil breaking body. A lifting aid is provided.

(Operation / Effect) According to the above configuration, since the sheet-turning-up assisting device turns up the hem of the multi-seat and guides the multi-seat to the soil crushing body in advance, the multi-sheet is caught at a location where the earth crushing body enters the ridge. It is possible to prevent the dragging body from being dragged in advance, and the crushing body can be smoothly advanced. In this case, there is a possibility that the introduction resistance of the body turning may be further increased by introducing the sheet turning assisting tool, but the straight running of the body is ensured by the reliable propulsive force of the driving wheels provided with the spike members.

[Structure, operation and effect of the invention according to claim 5]

(Structure) According to a fifth aspect of the present invention, the harvesting portion at the front portion of the fuselage is biased to one lateral side with respect to a pair of left and right drive wheels disposed at the rear portion of the fuselage at right and left intervals across a wide flat ridge. An auxiliary wheel device used for a root crop harvester arranged in a laid manner, wherein a plurality of divided wheel members arranged in a circumferential direction are mounted laterally outside the drive wheel, and each of the divided wheel members includes a plurality of spike members. In addition, each split wheel member is configured to be freely repositionable and fixable in the radial direction with respect to the wheel axis, and when the split wheel member is in the radially outer working position, the spike member projects from the outer diameter of the drive wheel. In addition, the spike member is configured to retreat inside the outer diameter of the drive wheel when the split wheel member is at the storage position on the inner side in the radial direction.

(Operation) According to the above configuration, during the harvesting operation in the field, the position of each split wheel member is changed radially outward to switch to the operation posture in which the spike member projects,
At the time of traveling traveling outside the field, it is only necessary to change the position of each split wheel member inward in the radial direction and switch to the retracted posture in which the spike member retreats, and in the traveling state with the spike member attached to the drive wheel. Suitable forms can easily be obtained.

(Effect) According to the fifth aspect of the present invention, a large number of spike members can be moved out and back only by changing the positions of a small number of divided wheel members on the lateral outer sides of the drive wheels, and the trouble such as wheel replacement can be saved. It can be easily changed to a state suitable for use in the field and a state suitable for traveling on the road without applying it, and it is effectively used as an auxiliary wheel device for root crop harvesters that generate biased forward resistance Can be used.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a walking type onion harvester will be described below with reference to the drawings.

This onion harvester is basically configured for harvesting during open-field cultivation (open-field specification), and the onion-harvesting machine set to the open-field specification is shown in FIGS. ing. In addition, by adding some modifications to the basic configuration, it is possible to set the specifications for harvesting with multi-rows (multi-spec), and the onion harvester set to multi-spec. Are shown in FIGS. 1 to 11.

First, the configuration of the open-field specification, which is the basic configuration, will be described with reference to FIGS. This onion harvester consists of four onions (root vegetables) W cultivated on wide flat ridges.
It is configured to harvest two right-hand sections in the traveling direction, and a harvesting section B of a two-row digging specification is provided at a front portion of a three-wheel traveling type traveling body A provided with a loop-shaped steering handle 1. It has a structure equipped with.

The traveling body A is provided with a pair of left and right drive wheels 2 that cross over a ridge and one gauge wheel 3 that moves on the right ridge bottom. Power from an engine 4 mounted on the rear of the body is transmitted to a transmission case. After being shifted at 5, the transmission is transmitted to the left and right drive wheels 2 via the axle case 6 and the chain case 7. The drive wheel 2 itself is a rubber wheel integrally formed by baking a lug on a rim. The left axle case 6 is expanded and contracted so that the wheel tread can be changed according to the ridge width. Is configured to be able to change the position right and left. Gauge wheel 3
Is configured so that the vertical position can be adjusted steplessly by rotating the hand handle 8, and by this adjustment, the ground height of the harvesting part B can be arbitrarily determined according to the ridge height and the like. Has become.

The harvesting section B has two onions W to be harvested.
Vertical-type leaf stem pulling device 10 located on both sides of the leaf stem Wb, and horizontal-rotating leaf stem pulling device 1 located behind it
1. Nipping / pulling / conveying device 1 located further behind
2, a crushing device 13 located below the starting end of the nipping / pulling / up conveying device 12, a positioning device 14 located below the nipping / pulling / up conveying device 12, and a position between the nipping / pulling / up conveying device 12 and the positioning device 14. The cutter 15 and the posture aligning device 16 located at the rear of the position aligning device 14 are basically provided, and the detailed configuration and function of each part will be described below.

[Leaf stem lifting device 10 (open-field specification)]

The vertical turning type leaf stem pulling apparatus 10 has a large number of engaging claws 23 connected to a chain 22 which is wound between sprockets provided on the upper and lower sides of a case 21 and driven in a vertical direction so as to be able to move up and down. The onion W has a leaf stem Wb which is raised obliquely rearward and upward from the vicinity of the ground in a posture in which the locking claw 23 is projected forward, and each of the two onions W It is arranged to work on both sides.

Here, the leaf stem pulling device 10 is driven as follows. That is, as shown in the transmission system diagram of FIG. 24, a PTO shaft 26 whose power transmission is interrupted via a PTO clutch 25 is laid horizontally on a working power output unit 24 provided in the front part of the transmission case 5, This PTO shaft 26
A horizontal transmission shaft 28 for driving a leaf stem pulling device is laid on the front end of a forward transmission shaft 27 extending forward from the left end of the leaf stem, and the three leaf stem pulling devices 10 are driven by the horizontal transmission shaft 28. It is designed to be driven.

[Leaf stem picking device 11 (common to both specifications)]

In the horizontal turning type leaf stem picking device 11, a number of locking claws 33 are continuously connected to a belt 32 which is wound between pulleys provided above and below a case 31 and driven to rotate in a horizontal direction. By moving the pawl 33 upward and obliquely upward from the vicinity of the ground in a posture in which the pawl 33 is projected sideways, the leaf stem Wb of the onion W
A pair of left and right belts 32 are arranged facing each other such that their locking claws 33 overlap each other, and the two onions W pulled up by the leaf stem pulling device 10. After the leaf stem Wb is raked from the left and right at the start end of both belts 32, it is raked upward and rearward.

In this case, the leaf stem raising device 11 moves the locking claw 33 sideways to lift the leaf stem Wb, so that the locking claw 33 is directed to the leaf stem Wb facing in the front-back direction. Since it intersects securely so as to largely intersect, even if it is not pulled up by the leaf stem pulling device 10, it is corrected to the posture of falling forward as described above, thereby being scraped by the leaf stem raising device 11. The lifting action can be reliably received, and all the leaf stems Wb can be scraped up without leakage.

[Nipping / Pulling / Conveying Device 12 (Both Specifications)]

The nipping / pulling-up / conveying device 12 comprises a pair of left and right wide nipping belts 34 which are wound between upper and lower pulleys and driven sideways to face each other. The two onion W leaves and stems Wb raked up by the left and right holding belts 34 are strongly pinched and moved rearward and upward, thereby pulling up the two onions W on the ridge and suspending them on the rearward and upward. It is configured to be transported.

As shown in FIG. 24, the PTO shaft 26
Is driven through the worm speed reduction mechanism 36 and the chain 37 to drive the left holding belt 34 of the holding / pulling-up transport device 12, and the leaf stem is driven by the power removed from the front end of the left holding belt 34. The left belt 32 of the scraping device 11 is driven. In addition, a transmission shaft 38 interlockingly connected to the middle of the chain 37
The right picking belt 34 in the picking / pulling / up conveying device 12 is driven by the power taken out through the right side, and the right belt in the leaf stem lifting device 11 is driven by the power taken out from the front end of the right holding belt 34. 32 is driven.

[Positioning device 14 (exclusive for open-field specifications)]

The position aligning device 14 is used in the open-field specification, and is constituted by a pair of left and right guide belts 47 which are wound between the front and rear pulleys and driven sideways to face each other. It is installed almost horizontally. Therefore, the distance between the positioning device 14 and the nipping / pulling-up / transporting device 12 thereabove becomes larger toward the rear side in the transporting direction, and the leaf stem is nipped by the nipping / pulling-up / transporting device 12 and conveyed diagonally rearward and upward. By introducing the leaf stem Wb of the onion W between the left and right guide belts 47, the onion main body which is to be pulled up by the nipping / pulling-up and transporting device 12 is received by the lower surface of the guide belt 47, and further moved upward. , The height of the onion body Wa is made uniform. As shown in FIG. 24, the left and right guide belts 47 in the positioning device 14 are driven by power taken out from the rear ends of the left and right belts 32 in the foliage scraping device 11, respectively. .

Here, the force for holding the leaves and stems by the left and right holding belts 34 in the holding / pulling-up conveying device 12 is strong at the front end side of the conveying where the onions are pulled up from the field, and the onion main body Wa of the onion body Wa is cooperated with the positioning device 14. The nipping force is weakened in the transport region where the heights are aligned, so that the leaf stem Wb of the onion W, which has been prevented from moving upward by the positioning device 14, is pulled relatively downward from the nipping and lifting transport device 12. .

[Leaf cutter 15 (exclusive for open-field specifications)]

The leaf cutter 15 is used in the open-field specification, and is a single cutter provided at a front end of a pair of chain transmission mechanisms 48 and 49 which are connected to the PTO shaft 26 so as to be able to bend and extend. It is configured as a disk cutter, and can be vertically adjusted along the linear slide guide mechanism 50. Therefore, the alignment device 14
By cutting the leaf stem Wb of the onion W in which the heights of the onion body Wa are aligned by adjusting the position of action, the length of the leaf stem Wb left uncut on the onion body Wa can be adjusted. It has become.

[Soil crusher 13 (open-field specification)]

As shown in FIGS. 19 to 23, the crushing device 13 facilitates the onion W to be pulled out of the ridge by the nipping / pulling-up conveyance device 12, and is provided near the skirt of the ridge shoulder and from above the ridge. It is constituted by a pair of left and right earth breaking bodies 41 bent in an L-shape in a front view so as to enter below the two onions W on the right side in the machine body traveling direction. Each of the soil breakers 41 is pivotally supported at the front part of the body frame 9 so as to be able to swing back and forth around a fulcrum a, and has an upwardly extending end and an eccentric crank part 43 provided at the right end of the PTO shaft 26. When the rod 44 is pushed and pulled through the eccentric crank part 43, the crushing body 41 is driven to swing back and forth with a fixed small stroke around the fulcrum a, and is moved below the onion W. By breaking up the soil and expanding and softening, the onion W that is pinched and pulled up by the pinch pulling and conveying device 12 can be pulled out without difficulty.

[Position aligning device 16 (exclusive for open-field specifications)]

The attitude aligning device 16 includes a guide bar 51 and a guide plate 52 disposed on the end side of the position aligning device 14 with a conveyance path interposed therebetween, and a projection driven by power taken out from the end of the left guide belt 47. After the leaves are cut off, the onion main body Wa, which has been left behind and has been nipped by the left and right guide belts 47 and conveyed rearward, is formed between the guide bar 51 and the guide plate 52. Therefore, it is configured so that it is corrected to a horizontal position in which it is easy to collect and is forcibly released onto the ridge.

The onion harvester of the open-field specification is configured as described above. The four onions W cultivated on the flat ridge in the open field are moved forward by one stroke and the two onions W on the right side in the traveling direction. , And is subjected to a leaf cutting process at a predetermined length, and left on a ridge. Thereafter, the onions W cut off and left on the ridges are collected mechanically or manually.

Next, the structure of a multi-specification onion harvester will be described with reference to FIGS. The basic configuration of this multi specification is the same as the above-mentioned open-field specification, and the same components and functional parts as those of the open-field specification are denoted by the same reference numerals, duplicated explanations are omitted, and the structure is different. The following is a description of the parts that have been used.

[Leaf stem lifting device 10 (multi specification)]

In this multi specification, two leaf stem pulling devices 10 are arranged in parallel on the right outside of the right onion, and four leaf stem pulling devices 10 are used as a whole. As shown in the transmission system diagram of FIG. 11, two leaf stem pulling devices 10 (1), 10
(2) is driven, and the right two leaf stem pulling devices 10 (3) and 10 (4) are driven via the auxiliary chain transmission device 29 while sequentially shifting the rear end driving position. The leaf stem pulling device 10 (3) located immediately to the right of the right onion strip is tilted more rearward than the two left leaf stem pulling devices 10 (1) and 10 (2), The front end protrudes forward and downward from the front end of the case of the two leaf stem lifting devices 10 (1) and 10 (2) on the left side. The rightmost leaf stem pulling device 10 (4) is the inner leaf stem pulling device 1 (4).
0 (3), the front end of which protrudes further forward and downward than the front end of the case of the inner leaf stem pulling device 10 (3). In addition, each leaf stem pulling device 1
The zero engaging claw 23 is formed of a soft resin that is easily elastically deformed.

[Leaf cutting device 60 (for exclusive use of multi specification)]

In the multi-specification, a leaf cutting device 60 is provided below the starting end of the nipping / pulling / up conveying device 12 to cut the leaf stem Wb of the onion W which has started to be nipped and conveyed by the nipping / pulling / up conveying device 12. This leaf cutting device 60
Are left and right guide belts 47 constituting the alignment device 14.
The left and right disk-shaped rotary blades 62 are configured to be driven by power taken out from the front pulley 39 around which is wound via a chain 61. Under each of the rotary blades 62, a thick disk-shaped rotary body 63 made of rubber is connected, and is driven to rotate integrally with each of the rotary blades 62. The onion body Wa is pinched and conveyed to the rear, and the onion body Wa is lifted up and brought into contact with the rotary blade 62 by the rotating body 63 to prevent the onion body Wa.
Is prevented from being hurt.

Further, on the outer peripheral surface of the rotating body 63, a raking projection 64 is provided so as to protrude from the left and right sides of the leaf stem Wb of the onion W which is introduced into the leaf cutting device 60.
To convey it. Here, the rotary blade 62
Is driven at an increased speed in the transmission by the chain 61, and accordingly, the rotating body 63 is also driven to rotate at a high speed. In this case, the peripheral speed of the rotating body 63, that is, the rearward conveying speed by the rotating body 63 is set to be higher than the rearward conveying speed by the nipping / pulling-up conveying device 12 and the positioning device 14. .

[Earth crusher 13 (multi specification)]

As shown in FIG. 5 and FIG. 7, the mulling device 13 in the multi-specification crushes the soil around the onion body Wa which has been cut off and left on the ridges, so that it can be easily pulled up and collected later. The crushing body 41 bent in an L-shape in a front view so as to enter from below the skirt of the ridge shoulder to below the right two onions W, and a position immediately before the crushing body 41 And a sheet-turning-up auxiliary tool 42 which protrudes slightly near the skirt of the ridge shoulder, and the crusher 41 is attached to a fulcrum a at the front of the body frame 9.
The eccentric crank portion 4 is pivotally supported so as to be able to swing back and forth, and its upper extending end and an eccentric crank portion 43 provided on the right end of the PTO shaft 26 are linked and connected by a rod 44.
When the rod 44 is pushed and pulled through 3, the soil breaking body 41 is driven to swing back and forth with a small stroke around the fulcrum a, and the soil below the onion W is broken and softened. , The onion W can be easily pulled out.

The sheet-turning-up auxiliary member 42 is also pivotally supported around the fulcrum b so as to be able to swing back and forth, and is operatively connected to the soil breaking body 41 via a linking rod 45 to swing the soil breaking body 41 forward and backward. It is configured to be driven to swing back and forth in synchronization with the movement, and by moving forward while cutting down the skirt portion of the ridge shoulder, while reducing the rush resistance of the subsequent soil breaking body 41 into the soil, The multi-seat S is hung on the ridge and pushed forward slightly while pushing up the right hem. In this manner, the right side hem of the multi-sheet S is freely set by the sheet-turning-up auxiliary tool 42 so that the multi-sheet S can be easily turned up. It is done smoothly without. In addition, this sheet turning assisting device 4
From 2, a sheet guide for guiding the hem of the multi-seat F picked up by the sheet-turning-up auxiliary tool 42 to the crusher 41 to prevent the multi-sheet S from being caught by the crusher 41. The part 46 is extended.

After the airframe passes while performing the leaf cutting in this way, the left uncut leaf stems protrude from the cultivation hole of the multi-sheet S, and the multi-sheet S becomes the uncut leaf stem Wb. It can be turned up easily without being disturbed. Then, when the multi-sheet S is turned over, the root vegetable bodies Wa, which have been cut into short leaves, are lined up on the ridges, and may be collected by appropriate means.

[Propulsion structure]

This onion harvester, in which the harvesting section is unevenly distributed in the lateral direction with respect to the left and right drive wheels 2, is liable to skew to the unevenly distributed side (the right side in this example) of the harvesting section.
In the multi-specification, since the landslide body 41, which is long from the eccentric side of the harvesting section, is inserted into the ridge, the aircraft is more likely to swing to the eccentric side of the harvesting section due to the forward resistance acting on the crushing body 41. However, by attaching the auxiliary wheel device 70 to the drive wheel 2, skewing of the body is suppressed.

In other words, as shown in FIGS. 9 to 11, the auxiliary wheel device 70 includes three divided wheel members 72 of the same specification in which a plurality of (four in this example) spike members 71 are radially fixed. It is configured to be mounted side by side in the circumferential direction on the lateral outside of the drive wheel 2, and the split wheel member 7
2 is a metal plate having a thickness of about several millimeters and is formed in a partial arc shape, and the spike member 71 is formed of a plate piece having a thickness of several millimeters with its plate surface extending in the circumferential direction. It is welded and fixed perpendicular to 72.

The drive wheel 2 on which the auxiliary wheel device 70 is mounted has a boss 2a and a rim 2b formed by three spokes 2c.
And a plurality of propulsion lugs 2e integrally formed on a rubber coating 2d formed by baking on the entire circumference of the rim 2b.
A mounting seat 73 is provided for mounting the. On the other hand, near the two ends of the split wheel member 72 of the auxiliary wheel device 70, a pair of long holes 74 and 75 are formed.
The divided wheel member 72 is fastened and fixed over the mounting seat 73 of the adjacent spoke 2c by a bolt 76 inserted into the spokes 4 and 75.

The elongated holes 74 and 75 are formed in parallel with a radial line passing through the wheel axis. When the bolts 76 are loosened, each of the divided wheel members 72 is moved within a certain range in the radial direction. By tightening the bolts 76 at the limits of the holes 74 and 75, the divided wheel member 72 can be switched and fixed between the operation position moved outward and the storage position moved inward. As shown in FIGS. 8 and 10, in the operation position, all the split wheel members 72 are arranged in a series of arcs, and all the spike members 71 protrude from the outer diameter of the drive wheel 2. In the storage position, the ranges of the long holes 74 and 75 are set so that all the spike members 71 are retracted into the outer diameter of the driving wheel 2 and only the driving wheel 2 is in contact with the ground.

The inner end of each of the elongated holes 74 and 75 of the split wheel member 72 is bent and extended in the wheel forward rotation direction F, and in the operating state, bolts 76 are attached to the extended portions 74a and 75a. The divided wheel member 72 is slightly rotated in the circumferential direction so as to be positioned. When the position of the divided wheel member 72 is set in this way, a propulsion reaction force acting in the opposite direction to the forward rotation direction F acts on the divided wheel member 72 during forward traveling, and the bolt 76 relatively moves to the elongated hole extension. Thus, the split wheel member 72 is stably held at the operating position by being pushed into the back of the members 74a and 75a.

The multi-specification onion harvester is configured as described above, and the four onions W cultivated on the multi-lined flat ridge are moved forward by one stroke to form two onions W on the right side in the traveling direction. Of the onion W is cut by the leaf cutting device 60 and reciprocated to perform four-row leaf cutting, and then the multi-sheet F is removed by winding or flipping up. The ridge surface is exposed, and the onion W cut off and left on the ridge is collected mechanically or manually.

The present invention can be carried out in the following modes.

(1) Depending on the condition of the field, it is also possible to mount the auxiliary wheel devices 70 on the left and right drive wheels 2 respectively.

(2) In field conditions where the drive wheels 2 are likely to slip due to leaf stems, weeds, or mud at the bottom of the ridges, the auxiliary wheel device 7 can be used even when harvesting under normal open-air conditions.
0 can be suitably used.

(3) As shown in FIGS. 12 and 13, the divided wheel member 72 is swung inward and outward about one connecting point p as a fulcrum, thereby switching between the projecting operation position and the storage position. And the split wheel member 7
By replacing the bolts 76 with the two bolt holes 77 formed in FIG. 2, the divided wheel member 72 can be configured and fixed at each position. according to this,
The switching operation of the auxiliary wheel device 70 only needs to be performed at three places, and the handling is easy.

(4) As shown in FIG. 14, a spike member 71 formed of a hard rubber material is
It can also be carried out by connecting to a bolt.

(5) As shown in FIG. 15, a spike member 71 formed by flattening the tip of a short metal pipe having dimensions cut out may be welded and fixed to the split wheel member 72. According to this, the spike member 7
1 can be made of an inexpensive material.

(6) As shown in FIG. 16, the tongue piece integrally connected to the outer periphery of the divided wheel member 72 is twisted and deformed.
The spike member 71 facing the wheel rotation direction may be configured. According to this, the spike member 71 can be provided without requiring welding or bolt connection operation, and the like, which is effective in reducing the processing cost of the auxiliary wheel device 70.

(7) As the spike member 71, a plate-shaped member or a rod-shaped member can be used.

(8) The fixing position of the split wheel member 72 in the radial direction can be changed in multiple steps or stepless steps so that the protrusion of the spike member 71 from the outer periphery of the drive wheel 2 can be adjusted. Can also.

(9) In the above embodiment, in the configuration of the open-field specification, the specifications of the leaf-stalk pulling-up device 10 and the crushing device 13 are changed as described above, and the leaf cutting device 60 is additionally provided to obtain a multi-specification. Although it can be changed, it is configured to change the position between the working position and the non-working position while the leaf cutting device 60 is always provided, and to change between the open-field specification and the multi-specification. Is also possible.

[Brief description of the drawings]

FIG. 1 is an overall side view of a multi-specific root crop harvester.

FIG. 2 is an overall plan view of a multi-specific root crop harvester.

FIG. 3 is an overall front view of a multi-specific root crop harvester.

FIG. 4 is a side view of a multi-specification harvesting unit.

FIG. 5 is a plan view showing a front part of a multi-specification harvesting unit.

FIG. 6 is a front view showing a part of a multi-specification harvesting unit.

FIG. 7 is a side view of a multi-spec crusher.

FIG. 8 is a side view of a drive wheel to which an auxiliary wheel device set in a working posture is attached.

FIG. 9 is a side view of a driving wheel to which the auxiliary wheel device set in the retracted position is attached.

FIG. 10 is a rear view of the drive wheel to which the auxiliary wheel device is attached.

FIG. 11 is a transmission diagram of a multi-specification transmission system.

FIG. 12 is a side view of a driving wheel to which an auxiliary wheel device according to another embodiment is set in an operating posture.

FIG. 13 is a side view of a drive wheel to which an auxiliary wheel device according to another embodiment is set in a retracted position;

14A is a side view of a divided wheel member provided with a spike member according to another embodiment. FIG. 14B is a rear view of a divided wheel member provided with a spike member according to another embodiment.

15A is a side view of a split wheel member having a spike member according to another embodiment. FIG. 15B is a rear view of a split wheel member having a spike member according to another embodiment. Figure

16A is a side view of a split wheel member provided with a spike member according to still another embodiment. FIG. 16B is a rear view of a split wheel member provided with a spike member according to still another embodiment. Perspective view

FIG. 17 is an overall side view of a root crop harvester with an open-field specification.

FIG. 18 is an overall plan view of a root crop harvester with an open-field specification.

FIG. 19 is an overall front view of a root crop harvesting machine with an open-field specification.

FIG. 20 is a side view of a harvesting unit with an open-field specification.

FIG. 21 is a plan view showing a front part of a harvesting unit of the open-field specification;

FIG. 22 is a front view showing a part of a harvesting unit of the open-field specification;

FIG. 23 is a side view of an out-of-the-box specification crusher.

FIG. 24: Transmission system diagram for open-field specifications

[Explanation of symbols]

 Reference Signs List 2 drive wheel 12 pinching / pulling-up / conveying device 41 soil breaking body 42 sheet turning-up auxiliary tool 60 leaf cutting device 70 auxiliary wheel device 71 spike member 72 split wheel member S multi-sheet W root vegetable Wb leaf stem

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsunetoshi Seki, 15-1, Minatomachi, Omura, Nagasaki Pref. Tanaka Koki Co., Ltd. (72) Inventor Tetsuo Ikeda, 15-1, Minatodo, Omura, Nagasaki, Tanaka Koki Co., Ltd. (72) Inventor Hiroyuki Chiba 64 Ishizukita-cho, Sakai City, Osaka Prefecture, in Kubota Sakai Works, Inc. Inventor Takao Sakatsuji 64 Ishizukita-cho, Sakai City, Osaka Prefecture F-term in Kubota Sakai Works Co., Ltd. (Reference) 2B072 AA03 BA02 CA12 DA01 DA05 DA12 DA19

Claims (5)

[Claims] 1. A walking-type root vegetable in which a harvesting portion at a front portion of a fuselage is arranged so as to be biased to one side laterally with respect to a pair of left and right drive wheels disposed at a rear portion of the fuselage at right and left intervals across a wide flat ridge. A harvesting machine, comprising: A leaf cutting device is arranged in an inclined upward direction, and a leaf cutting device is provided near a lower portion of a starting end of the nipping / pulling-up conveyance device. A soil breaking body that is penetrated to the lower side is provided at a position behind the cutting point of the leaf cutting device, and the drive wheel on the side where the harvesting unit is unevenly distributed is provided with a plurality of spike members that work into the running ground. The walk-root crop harvesting machine according to claim Rukoto. 2. The walking type root crop harvesting machine according to claim 1, wherein said spike member is constituted by a plate piece having a plate surface oriented in a wheel rotation direction. 3. The spike member is configured to be switchable between an operating position protruding from the wheel outer diameter and a retracted position retracting toward the center from the wheel outer diameter. 2. The walking type root crop harvester according to 2. 4. An auxiliary device for turning up a sheet, which acts on a skirt of a multi-seat hung on a ridge, is provided in front of the soil breaking body. The walking-type root crop harvester according to claim 1. 5. A root crop harvesting machine in which a harvesting portion at a front portion of a fuselage is arranged so as to be biased to one side laterally with respect to a pair of left and right drive wheels disposed at a rear portion of the fuselage with a left-right interval straddling a wide flat ridge. An auxiliary wheel device to be used, wherein a plurality of divided wheel members arranged in a circumferential direction are attached to a lateral outer side of the drive wheel, each divided wheel member includes a plurality of spike members, and each divided wheel member is a wheel shaft. When the split wheel member is in the radially outer working position, the spike member projects from the outer diameter of the drive wheel, and the split wheel member is radially displaceable and fixed relative to the center. The auxiliary wheel device for a walking root crop harvester, wherein the spike member is configured to retreat inside the outer diameter of the drive wheel when in the inner storage position.