JP2001346429A - Weak vegetable-harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To harvest spinach w, etc., appropriately without damaging it during its conveyance with a belt type nip and hold-conveying means 13. SOLUTION: This harvesting machine for the spinach, etc., for nipping and holding the vegetable w planted at a field during the traveling of its machine frame, pulling it out from the ground while conveying it in an inclined rear upward direction, then conveying the vegetable w in its side direction for releasing to the side part of the machine, is provided by constituting the belt type nip and hold-conveying means as an upper and lower 2-staged structure, and positioning a front and rear-directional conveying part 33a having an endless belt 38a bent so as to be equipped with a front and rear directional part and a side directional part f02, and a linear endless belt 38b positioned so as to oppose to the above front and rear directional part at the lower stage side, and a side directional conveying part 33b having an endless belt 42a bent so as to be equipped with a front and rear directional part f11 and a side directional part f12, and a linear endless belt 42b positioned so as to oppose the side directional part f12 of the above belt at the upper stage side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvester used for harvesting soft leafy vegetables such as spinach, komatsuna and bok choy.

[0002]

2. Description of the Related Art As a harvester for harvesting spinach, there is one disclosed in Japanese Patent Application Laid-Open No. H11-289844. To explain the outline, as shown in FIG.
A belt holding / conveying means 13 having a forward / backward transport section 33a and an obliquely horizontal transport section 33b 'is provided. During traveling of the machine body, the front / rearward transport section 33a grips spinach vegetated in a field and transports the spinach obliquely rearward and upward. Then, the spinach is conveyed sideways by the oblique sideways conveying section 33b ', and is discharged to the side of the fuselage.

The belt nipping and conveying means 13 includes a pair of left and right endless belts 42a ", 42b 'oriented in the front-rear direction. These belts 42a", 42b' are provided with pulleys 39a, 39b, 40a, 40b, 41a, 41b, the middle of the length in the front-rear direction is bent in a vertical shape in a plan view, and a convey path is formed between opposing portions, and the holding range portion of one endless belt 42a "is connected to the other endless belt. Each of the endless belts 42a ", 42b" is pressed toward the holding range portion 42b '.
b 'is formed of a material that does not easily expand and contract on the inner surface, and is formed of a thick sponge material on the outer surface side. The forward portion of the left and right endless belts 42a "and 42b 'from the bent portion p2 forms a forward-backward transport portion 33a, and the portion behind it forms an obliquely horizontal transport portion 33b'.

[0004]

In the above-mentioned conventional harvester, since the length of the machine body in the front-rear direction is increased, the present applicant has to arrange the front-rear transfer section 33a and the horizontal transfer section 33b as shown in FIG. The soft vegetable harvesting machine provided with the belt clamping and conveying means 13 having the following. Where 7a and 7b
Is a control handle, 12 is a weeding section, and bs is a container for receiving harvested vegetables, which is supported by the fuselage.

However, in this harvester, the soft leafy vegetables conveyed by the belt clamping / conveying means 13 may be damaged at the bent portion p2 of the clamping / conveying path. This will be described in more detail with reference to FIGS. 12 and 13. The inner surfaces of the respective endless belts 42a and 42b "
40b, 41a, 41b at the same speed in the arrow direction f
1 and f2, the respective straight nipping transport paths h1 of the front-rearward transport section 33a and the horizontal transport section 33b.
At the position h2, the outer surfaces of the holding range portions of the left and right endless belts 42a and 42b "move at the same speed. However, at the bent portion p2, the bending radius r1 of the outer surface of the one endless belt 42a is equal to the bending radius r1 of the belt 42a. Since it is larger than the inner surface bending radius r1 ', the outer surface of the endless belt 42a moves at a speed higher than the moving speed of the inner surface of the belt 42a, and conversely, the other endless belt 42b ".
Is smaller than the inner surface bend radius r2 'of the belt 42b ", the endless belt 42
The outer surface of b "moves at a speed smaller than the moving speed of the inner surface of the belt 42b". Since this and the inner surfaces of the endless belts 42a and 42b "are moved at the same speed, there is a difference in the moving speeds of the outer surfaces of the respective belts 42a and 42b", and the bent portion p2 of the nipping and conveying path.
The soft leafy vegetables that have reached the speed are rotated in the direction of the arrow Y at a speed related to this speed difference, and come into contact with the endless belts 42a, 42b "and other portions to be damaged, or partially due to the speed difference. On the other hand, it may be damaged by being twisted by being rotated, while the starting end p of the bent portion p2 of the nipping transport path may be damaged.
5 and the end p6, the respective belts 42a, 42
The moving speed of the outer surface of b "is the same, so that the rotation of the soft leafy vegetables tends to be forcibly stopped, and the blocking action may damage the soft leafy vegetables.

SUMMARY OF THE INVENTION An object of the present invention is to mainly provide a harvester which solves such a problem and can harvest soft leafy vegetables such as spinach without damaging them.

[0007]

In order to achieve the above object, the present invention is as follows. That is, in the invention described in claim 1, a belt sandwiching and conveying means having a forward and backward conveying section and a laterally conveying section is provided, and while the body is running, the front and rear conveying section sandwiches the vegetables vegetated in the field, A harvesting machine that lifts the vegetable from the ground while transporting it diagonally backward and upward, and then transports the vegetables sideways by a horizontal transporting unit and discharges the vegetables to the side of the machine. It has a structure of two or more stages, at least a pair of left and right forward and backward straight endless belts are located on the lower side, and a pair of front and rear sideways straight endless belts are at least on the upper side. And a configuration in which a horizontal transport unit having a position is located.

According to the present invention, since the front-rearward transport section is located on the lower side, the tip of the transport section is close to the ground.
In this way, the front-rearward transporting section clamps a relatively lower durable portion of vegetables such as spinach vegetated in the field, and effectively imparts a lifting force to the vegetables in the process of transporting the vegetables rearward. After the vegetables are pulled out of the ground, the horizontal transport section grips the vegetables and transports them sideways, but since the horizontal transport section is on the upper side, it grips the relatively upper part of the vegetables. To suppress the development of the soft part, and to stably convey it in a state where it is difficult to contact a part other than the endless belt.

The connecting portion between the front-rear nip conveyance path of the front-rear conveyance section and the horizontal nip conveyance path of the horizontal conveyance section is a bent portion that acts as a part of the nip conveyance path of the belt nip conveyance means. The bent portion has a relatively wide shape in plan view, which is surrounded by a laterally straight endless belt on the upper side and a front-rear straight endless belt on the lower side. Accordingly, in the bent portion, the holding force of the endless belt applied to the vegetables is reduced, and the action state of the plurality of forces applied to the vegetables from the endless belt is different from that of the conventional bent portion with respect to the rotation of the vegetables in the bent portion. The rotation of the vegetables passing therethrough is less likely to occur than in the past, because it is more unsuitable. On the other hand, on the other hand, there is a possibility that the endless belt may reduce the holding and conveying force of the vegetables by the endless belt, but this problem can be dealt with, for example, by providing a conveying auxiliary unit as described later.

The above invention can be modified as follows. That is, as described in claim 2, at least on the lower side, a front-rearward conveying section having a pair of right and left front-rear straight endless belts is located, and at least on the upper side, a front-rearward portion and a lateral And a side-to-side transport section having an endless belt bent so as to have a section, and a side-to-side straight endless belt positioned on the rear side of the side-to-side section so as to face the side-to-side section.

[0011] The above-described modified example of the second aspect is the first aspect.
The difference from the above-mentioned invention is that the upper belt has a lateral transport section and a front-rearward section. The front-rearward portion is disposed along one side of the front-rear transport portion of the front-rear transport portion, so that the relatively soft upper portion of the vegetables that are transported by the front-rear transport portion is fixed to a specific side surface. Is stabilized by being supported by the front-rearward portion described above, reaches the transport end of the forward-rearward transport portion in this stable state, and is subsequently shifted to the horizontal transport portion.

Alternatively, as described in claim 3, an endless belt bent at least on the lower side so as to have a front-rearward portion and a lateral portion, and a lateral side of the endless belt facing the front-rearward portion. A front-rear transport section having a front-rear straight endless belt positioned on the side is located, and a horizontal transport section having a pair of front-rear lateral straight endless belts is positioned at least on the upper side.

The above-mentioned modification according to claim 3 is claim 1.
The difference from the first invention is that the lower belt has a forward-rearward transport section and a horizontal section. This horizontal portion is arranged along the front side of the horizontal pinch transport path of the horizontal transport portion, so that a relatively lower portion of the vegetables pinched and transported by the front-rear transport portion during the pinch transport by the horizontal pinch transport portion, The front side is supported by the sideways portion and is stabilized.

Alternatively, an endless belt bent so as to have a front-rear portion and a lateral portion is provided on at least the lower side, and the endless belt is opposed to the front-rear portion. A front-rearward conveying section having a front-rear straight endless belt positioned on a lateral side, and an endless belt bent to include a front-rearward section and a lateral section on at least an upper side. And a laterally sandwiching and conveying section having a laterally straight, endless belt positioned on the rear side thereof so as to face the laterally oriented section of the belt.

The above-mentioned modification according to claim 4 is the first modification.
The present invention is different from the first embodiment in that the upper belt has a horizontal transport section and a front-rear section, and the lower belt has a front-rear transport section and a horizontal section. According to this, both the operation of the front-rearward portion of the horizontal transport portion in claim 2 and the operation of the horizontal portion of the front-rearward transport portion in claim 3 can be obtained.

The invention of each of the above-mentioned claims is embodied as follows. That is, as described in claim 5, the rear end of the holding side straight range portion of the forward-backward straight endless belt located on the opposite side to the vegetable release side of the lower endless belt, Of the endless belt on the upper side, the rear side of the sideways straight endless belt is located behind the clamping side straight range portion of the endless belt,
In addition, the front end of the holding side straight range portion of the rear sideways straight endless belt of the upper endless belt is located on the opposite side of the vegetable release side of the lower endless belt. The straight endless belt is positioned on the side opposite to the vegetable discharge side with respect to the sandwiching side straight range portion.

[0017] According to this, in the bent portion as a sandwiching transport path portion formed at a connection point between the longitudinally sandwiching transporting path of the longitudinally transporting section and the laterally sandwiching transporting path of the laterally transporting section, the outside surrounding this location is provided. Of the two sides, one of the sides is entirely formed in the holding-side straight range portion of the front-rear straight endless belt on the lower side and is moved straight rearward, and the other side is formed. Is formed in the holding-side straight range portion of the upper-side, horizontally-directed endless belt, and is moved horizontally in the direction toward the vegetable discharge side, whereby the inside of the bent portion is formed. The vegetables that have reached are transported to the laterally pinching and conveying path accurately.

According to a sixth aspect of the present invention, the rear end of the front endless straight belt which is located on the side opposite to the vegetable discharge side of the lower endless belt and the upper end of the upper end side belt are arranged opposite to each other. A single pulley or the end on the opposite side of the vegetable release side of the rear sideways straight endless belt of the endless belt
It is configured so that it is wrapped around upper and lower pulleys arranged concentrically. According to this, the lower end side longitudinal straight endless belt and the upper side lateral endless belt are arranged in a simple and compact structure, and can be easily rotated at the same speed. Become.

[0019] As described in claim 7, the lower end of the vegetable is located below the nipping and conveying path portion formed at the connection point between the front and rear nipping and conveying path of the front and rear conveying part and the horizontal nipping and conveying path of the horizontal conveying part. A transport assisting means for supporting the portion is provided. According to this, even if the nipping and conveying force of the vegetables by the endless belt in the nipping and conveying path portion is small, the vegetables can be reliably transferred from the front-to-back conveying unit to the lateral conveying unit.

For example, the pulley for guiding the rear end portion of the pair of left and right endless belts of the front-rearward conveying unit that is the vegetable discharge side may be used as the auxiliary conveying means. A support shaft is arranged concentrically with the center of rotation of the, and a support disk for supporting the lower end of the vegetables is rotatably mounted on the support shaft. According to this, the supporting disk stably supports the vegetables conveyed in an arc shape in the holding conveyance path portion while moving together with the vegetables.

In place of the conveyance assisting means of claim 8, the following may be carried out. That is, as described in claim 9, of the pair of left and right endless belts of the front-rearward conveying section. A support disk is provided that is rotated in the same manner as a pulley that guides the rear end portion of the front-to-back nipping and conveying path of the vegetable discharge side, and this disk supports the lower end of the vegetables conveyed in the nipping and conveying path part. . According to this, since the supporting disk acts to transmit the rotational force of the supporting disk to the lower end of the vegetables supported by the supporting disk to positively convey and move the lower portion of the vegetables, the vegetable conveyance in the bent portion can be performed. It will be performed accurately without causing unnecessary internal force on the vegetables.

[0022]

1 is a plan view showing a soft vegetable harvester according to an embodiment of the present invention, FIG. 2 is a front view of the harvester, FIG. 3 is a side view of the harvester, FIG. FIG. 5 is a view showing a belt holding and conveying means of the harvester, FIG. 6 is a plan view showing a part of the belt holding and conveying means of the harvester, and FIG. 7 is a plan view showing a conveying sheet used in the harvester. , FIG. 8 is an explanatory view of the operation of the harvester, and FIG. 9 is a view showing a use state of the sheet.

As shown in FIGS. 1 to 3, the harvester of this embodiment comprises a traveling vehicle unit 1 and a vegetable processing unit 2. First, the traveling vehicle unit 1 will be described. A crawler-type traveling device 3 that is oriented forward and backward, an engine 4 fixed to a rear portion of a body frame 1a supported by the traveling device 3,
A mission 5 fixed to the side of the engine 4 and transmitting rotation from the engine 4; and a chain case fixed to a lower part of the side of the mission 5 and transmitting rotation output from the mission 5 to the crawler traveling device 3. 6
And steering handles 7a, 7b extending upward from the body frame and subsequently projecting rearward from the engine 4.

Here, the crawler-type traveling device 3 comprises a front-rear frame 8, guide wheels 9, 10 a, 10 b, and 10 c mounted on the frame 8, and the guide wheels 9, 1.
0a, 10b, and 10c are endless crawlers 11 which are wrapped around and are made of a rubber material or the like, and the body frame 1a is a frame member in which a plate member, a tube member, and the like are connected in a frame shape. , And is integrally connected to the front-rear frame portion 8 and is located above the crawler traveling device 3. The chain case 6 transmits the rotation of the engine 4 to the guide wheels 9 via a chain transmission mechanism.

Next, the vegetable processing section 2 will be described. A weeding section 12 located at the forefront and a belt continuously arranged behind the weeding section 12 and extending to the rear of the body frame 1a are described. Nipping and transporting means 13; horizontal support surface means 14 disposed laterally outside the body frame 1a on the rear side of the nipping and transporting means 13; and root cutting and digging means disposed below the nipping and transporting means 13 15 and a processing unit height changing means (not shown) for vertically displacing the front part of the processing unit 2.

The weeding section 12 includes a pair of left and right weeding boards 16a, 1
6b, each of the weeds 16a and 16b has a mountain shape in a front view, and has a rear end fixed in the same shape as the support frame 13a of the belt holding and transporting means 13. At this time, the pair of left and right weeding boards 16a and 16b are arranged slightly wider in plan view.

As shown in FIG. 3, the root excavation raising means 15 horizontally moves the front swing arm member 17a and the rear swing arm member 17b from right, left, front and rear portions of the inclined member a1 forming a part of the support frame portion 13a. The front and rear arm members 17a, 17a on each of the left and right sides are hung down freely around the axes g1, g2.
b, a longitudinal member 18 is axially coupled to a lower end portion of the member b, and a U-shaped blade body 19 is bolted to these longitudinal members 18 in plan view,
On the other hand, a crank mechanism for transmitting the rotation of the engine 4 is formed at an appropriate position of the body frame 1a, and an output portion of the crank mechanism and an intermediate portion of the length of the swing arm member 17b are connected via a connecting rod 20. By coupling, the vertical and horizontal repetitive displacements of the output portion are transmitted to the swing arm member 17b. At this time, the crank mechanism and the connecting rod 20 may be provided on one side of the body frame 1a, or may be provided in a pair on each of the left and right sides.

The horizontal support surface means 14 is configured as follows. That is, a laterally extending support member 21 extending rightward from the body frame 1a is provided on the body frame 1a, and a pair of left and right front-rear members 22a is provided on the upper surface of the support member 21.
22b is fixed, and a pair of front and rear guide wheels 23a and 23b are rotatably mounted on these front and rear members 22a and 22b, and a rear guide wheel 23b is driven by a drive motor 24 fixed to one front and rear member 22b. The endless belt 25 made of a synthetic resin material such as rubber or urethane material is provided on a pair of front and rear guide wheels 23a and 23b.
And the upper surface of the belt 25 is placed on the horizontal support surface 14a.
In addition, locking projections c, c for locking the rectangular conveyance sheet j shown in FIG. 8 placed on the surface 14a are provided at left and right portions on the horizontal support surface 14a. .

At this time, the distance between the front and rear guide wheels 23a and 23b is approximately equal to the length of the conveying sheet j shown in FIG. 7 and is about 1 m to 2 m. A support plate 26 for supporting the lower surface of the upper portion is fixed between the upper portion and the lower portion of the belt 25 between the guide wheels 23a and 23b. The drive motor 24 is rotated in the forward and reverse directions by a switch 27 mounted on the steering handle 7a. Further, a sheet receiving portion 28 for accommodating the conveying sheet j is fixed to the front side of the belt 25 via front-back members 22a and 22b. The sheet receiving portion 28 has a bottom portion and a side portion surrounding the bottom portion, and the top surface is open.

A leg member 29 is fixed below the outer end of the laterally extending support member 21, and a front-rear support wheel 30 is rotatably mounted on the lower portion of the leg member 29. The front-rear position of the support wheel 30 and the height of the ground contact portion of the support wheel 30 are the rear end p of the ground contact portion 11a of the front-rearward crawler traveling device 3.
It matches that of 1. At this time, if necessary, the laterally extending support member 21 may be provided with a vertical driving means so that the belt 25 and the like can be moved vertically with respect to the support member 21.

The conveying sheet j is formed of a synthetic resin material or the like and has a length of about 1 m to 2 m and a width of about 0.3 m.
And a dimension from 0.6 m to 0.6 m, and at least in the left and right positions of the front end, the locking through holes 3 fitted externally to the protrusions c, c.
Metal rings 31 and 31 having fixed parts 1a and 31a are fixed, and male and female fasteners 32a and 32b are provided at appropriate positions at the front and rear ends to form connecting means for temporarily and separably connecting these parts. It was done. On this occasion,
One fastener 32b is provided on the lower surface side in FIG.

The belt nipping and conveying means 13 is configured as follows. The transport means 13 may have a structure in which the belt has two or more upper and lower stages. Here, a description will be given of a case where the belt has two upper and lower stages. That is, the support frame portion 13a
The belt holding / conveying section 33 is provided on a surface which is inclined upward in a rearward direction.
Is installed. The support frame portion 13a has an arm portion d extending downward and also serving as a transmission case, and the lower portion of the arm portion d is swingably mounted on the body frame 1a via a horizontal shaft g3. The unit 33 has an upper and lower two-stage structure.
a, and a horizontal transport section 33b on the upper side.

The structure of the lower side of the belt nipping / conveying section 33 (corresponding to claim 3 and claim 4) will be described. As shown in FIG. 1 to FIG. 3 and FIG. A pair of left and right front pulleys 34a, 34
b at the right and left specific locations at the rear of the support frame 13a.
In addition to providing two rear pulleys 35a and 35b, an auxiliary pulley t is provided in an appropriate arrangement, and a terminal end pulley 37a is provided in a right overhanging portion e formed on the support frame portion 13a. Then, the endless belt 38a is looped around the right front pulley 34a, the rear pulley 35a located immediately behind the front pulley 34a, the terminal pulley 37a, and a specific auxiliary pulley t. And the horizontal part f
02 in a bent state. On the other hand, the left front pulley 34b, the corresponding rear pulley 35b, and the specific auxiliary pulley t are wound around the endless belt 38b which is relatively long in the front-rear direction. 38a is located on the lateral side of the front-back portion f01 so as to face the front-back portion f01.

Next, the structure of the upper side of the belt nipping and transporting section 33 (corresponding to claim 2 and claim 4) will be described. As shown in FIGS. 1 to 3 and FIG.
A front pulley 39a that is rotated around the rotation center axis s1 of the front pulley 34a is provided on the right side of the front of the support frame 13a. The rear pulley 40a rotated around the rotation center axis s2 and the rotation center axis s3 of the front rear pulley 35b
In addition to providing a rear pulley 40b that is rotated around, an auxiliary pulley t is provided at an appropriate location, and the right overhanging portion e formed on the support frame portion 13a is rotated about the rotation center axis s4 of the preceding terminal pulley 37a. And a pulley 41b that is paired with the pulley 41a before and after the pulley 41a. Then, the endless belt 42a is looped around the front pulley 39a, the rear pulley 40a located immediately behind the front pulley 39a, the terminal pulley 41a, and a specific auxiliary pulley t.
As a result, the endless belt 42a is connected to the front-rear portion f1.
1 and a bent portion f12. On the one hand, the rear pulley 40b and the terminal pulley 41
b and a specific auxiliary pulley t to the sideways endless belt 42b
The endless belt 42b is positioned at the rear side of the lateral portion f12 so as to face the lateral portion f12 of the belt 42a.

The above-mentioned endless belts 38a, 38b,
42a and 42b are made of a material whose inner surface is unlikely to undergo expansion and contraction deformation in the longitudinal direction, and whose outer surface is made of a sponge material which does not damage the leaf portion of the vegetable and has a thickness of several cm. ing.

The rotation of the engine 4 is transmitted to the rear pulleys 35a and 35b and the end portions 37a, 41a and 41b via the transmission 5 and a work clutch (not shown).
These pulleys 35a, 35b, 37a, 41a, 41b
Function as a driving pulley. At this time, the rotation of the engine 4 is further transmitted to the front pulleys 34a, 34b, 39a and the rear pulleys 40a, 40b to
a, 34b, 39a, 40a, and 40b may also function as drive pulleys.

In the belt nipping and conveying means 13, the two conveying belts 38a and 3
8b are arranged left and right, and these sandwiching range portions u1, u2
The space between them forms the front-rear nip conveyance path h1, and the two conveyance belts 42a and 42b
Are arranged in the front-rear direction, and these clamping range portions u3, u4
The space between them forms a laterally sandwiched conveyance path h2. On this occasion,
The front-rearward conveyance path h1 is substantially coincident with the crawler traveling device 3.

Each endless belt 38a, 38b, 42a,
42b is a rear pulley 35a, 35b and a terminal pulley 3
7a, 41a and 41b rotate in the directions of arrows f1 and f2.
In this case, a pair of left and right front pulleys 34a and 34b form a transport start end, and a pair of front and rear end pulleys 41a and 41b form a transport end.

Further, in the middle of the nipping and conveying path of the belt nipping and conveying means 13, the nipping and conveying formed at the connection point between the front and rear nipping and conveying path h1 of the front and rear conveying part 33a and the horizontal nipping and conveying path h2 of the laterally conveying part 33b. Below the bent portion p2 as a path portion, a transport assisting tool 43 is provided as shown in FIGS. This transport aid 43
Has a configuration in which a support shaft s2 'is arranged concentrically with the rotation center of the rear pulley 35a, and a support disk 44 for supporting the lower end of the vegetable w is rotatably mounted on the support shaft s2'.

Next, a description will be given of an example of use and operation of each part when harvesting soft vegetables such as spinach and komatsuna with the harvester of this embodiment configured as described above. In traveling on a road or traveling in a field until harvesting is started, by operating the processing height changing means, the support frame portion 13a and a portion integrated therewith are swung upward around the horizontal axis g3,
After raising the weeding part 12, the blade body 19 and the transport starting end of the belt nipping and transporting means 13 by an appropriate distance with respect to the crawler-type traveling device 3, the grips of the steering handles 7a, 7b are grasped, and the crawler-type traveling device is grasped. Engine 4 to crawler 11 of 3
Transmission of rotation.

Thus, the body except for the crawler type traveling device 3 travels smoothly without contacting the ground or the like.
When changing the traveling direction during traveling, use the steering wheel 7
a, 7b are pushed downward to change the longitudinal inclination of the entire body. As a result, the entire body is inclined such that the front end of the crawler-type traveling device 3 rises with the rear end p1 of the ground contact portion 11a of the crawler 11 as a fulcrum. At this time, the support wheel 30 is also present on the side of the rear end portion p1 and is maintained in the ground contact state. In this state, the steering handles 7a and 7b are swung right and left to change the aircraft in a desired direction.
The pushing force applied to the steering handles 7a, 7b is removed. As a result, the airframe is under its own weight,
The whole 1a returns to the state in which it touches the ground, and proceeds in the direction of a new aircraft.

The handling at the time of harvesting is performed, for example, as follows. That is, as shown in FIG. 1, the belt holding and conveying means 3
3 and the projections c, c are positioned at the front of the horizontal support surface 14a as shown in FIG. The front end of the conveying sheet j is developed and placed on the horizontal support surface 14a on the front side of the projections c, c, and the locking through holes 31a, 31a are fitted to the projections c, c to form a horizontal support. The remaining portion of the sheet j is folded so as to be easily fed out and positioned inside the sheet receiving portion 28.

Thereafter, the rotation of the engine 4 is transmitted to the crawler type traveling device 3 and the vegetable processing unit 2 to advance the machine body and to appropriately operate the processing unit height changing means. Thus, the blade body 19 enters the soil by a distance corresponding to the operation of the processing unit height changing means due to the weight of the body and the reaction force from the soil acting on the blade body 19. Blade 1
9 is forcibly vibrated around the horizontal axes g1 and g2 during the operation of the vegetable processing unit 2, and this vibration promotes the blade body 19 to enter the soil.

During the operation of the machine, the weeding section 12 releases the tangling between the vegetables w of the row i being harvested and the vegetables w of the row i adjacent to the left and right of the row i so as to pinch forward and backward. It acts to guide the user to the route h1. At this time, the weeding plate 16 of the weeding section 12
A and 16b contact the upper part of vegetables w, such as spinach, on a relatively large surface, and suppress the damage.

Next, as shown in FIG. 1, the main part of the blade body 19 cuts the root of one vegetable w of the vegetable row i while swinging back and forth. At this time, the cutting depth by the blade body 19 is several cm from the ground.
(Approximately 2 to 3 cm). The vegetables w thus cut reach the transport start end of the belt nipping transport section 33.

The vegetables w which are nipped and transported by the forward and backward transport section 33a are gradually raised along with the inclination, and are finally pulled out of the ground. At this time, the conveyor belts 38a, 38b, 42a, and 42b of the belt nipping and conveying means 13 softly sandwich the vegetables w with the sponge material, and on the other hand, the roots thereof are cut and excavated. The force does not act, and the damage of the vegetable w is suppressed.

The extracted vegetables w are conveyed to the downstream side of the front-rear nip conveyance path h1 at approximately the machine body traveling speed. Then, the horizontal transport section 33b transports the vegetables w that have reached the downstream side of the nipping transport path h1 to the transport end via the nipping transport path h2, and finally discharges the vegetables w from the transport end to the outside of the machine side. . The released vegetables w are provided with conveyance resistance by a suitable conveyance resistance applying means (not shown) on the root side, whereby the root side is in a horizontal sideways posture in which the inside of the machine is directed toward the inside of the machine, and is directly on the conveyance sheet j. To fall. This drop is repeated one after another as the harvest progresses, and the upper portion of the vegetables w is piled up as shown in FIG. 8 on the upper surface of the conveying sheet j immediately below the discharge position of the upper portion of the vegetables w. Each time the pile reaches an appropriate size, the operator turns on and operates the switch 27 to rotate the drive motor 24 in a specific direction, and the belt 25 and the projections c, c
The operation of moving the conveyance sheet j locked via the rearward by an appropriate distance is repeated until the projections c reach the rear end of the horizontal support surface 14a. In normal planting condition, the aircraft is about 5m-10
As the harvesting proceeds about m, the upper portion of the vegetables w is aligned with almost the entire upper surface of the conveying sheet j as shown by the imaginary line in FIG.

In this state, the operator temporarily stops the progress of the fuselage, moves to the side of the horizontal support surface 14a, pulls out the conveying sheet j from the projections c, c, and then proceeds to FIG. As shown in the figure, the sheet j for conveyance is circularized so as to wrap the upper part of the vegetable w, and the front and rear ends of the sheet j are brought close to each other. After compressing the upper portion of the vegetable w, the male and female fasteners 32a and 32b are adhered to each other to join the front and rear ends. The upper portion of the vegetables w thus loaded is lowered from the horizontal support surface 14a together with the transport sheet j wrapping the vegetables w, and is loaded on, for example, a loading platform of a truck stopped near a field. In addition, the upper part of the vegetables w loaded in this way is transported to a work place and subjected to processing such as removal of lower leaves.

On the other hand, the belt 25 is moved backward at the horizontal support surface 14a after the upper part of the circularized conveying sheet j and the vegetable w is lowered, so that the protrusions c and c are horizontally moved as before. Then, the next transport sheet j prepared in advance in the sheet receiving portion 28 is spread on the horizontal support surface 14a as shown in FIG. Then, the locking through holes 31a, 31a are externally fitted to the next projections c, c, and are locked to the horizontal support surface 14a. Thereafter, the above-described processes and operations are similarly repeated.

The process of stacking the upper portion of the vegetables w on the upper surface of the transport sheet j placed on the horizontal support surface 14a in this manner is different from the case where the upper portion of the vegetables is harvested in a resin-made fixed container. Since there is no side wall, it is possible to drop the upper part of the vegetable w from a height relatively close to the horizontal support surface 14a, which contributes to preventing damage to the vegetable. Eliminating the collision also contributes to eliminating damage to the upper portion of the vegetables w due to the collision. It should be noted that a large number of transport sheets j are put in the sheet receiving section 28 during the harvesting of the vegetables, so that packing using the transport sheets j can be conveniently performed.

Here, the transport operation and the like by the belt sandwiching and transporting means 13 according to the second and fourth aspects will be described in more detail. The horizontal transport section is located above the endless belt 38a on the right side of the forward and backward transport section 33a. Since the front-rear part f11 of 33b exists, the upper part of the vegetable w conveyed by the front-rear conveyance part 33a has the right side face facing the front-rear part f1.
1, so that the upper portion of the vegetable w is stably held during the transport by the front-rear nip transport path h1, and is hard to come into contact with members other than the endless transport belt, so that the upper portion of the vegetable w may be in contact with other members. Damage due to contact is prevented.

The vegetables w conveyed in the front-rear nip conveyance path h1 eventually reach a bent portion p2 which is a connection point between the front-rear nip conveyance path h1 and the horizontal nip conveyance path h2 of the horizontal conveyance section 33b. This bent part p2
As shown in FIGS. 4A (1), A (2) and FIG. 6, the upper and lower endless belts 42a, 38a guided by the rear pulleys 35a, 40a have arc-shaped holding portions u1 ', u3', and the lower side. Of the front-rear-facing straight endless belt 38b, and the upper-side lateral straight endless belt 42.
The width of the belt is relatively large surrounded by the holding-side straight range portion u4 'of FIG. 6B (in FIG. 6, the interval between the belts is shown larger than other portions for convenience of explanation). Moreover, in this portion, the lower end side belt 38b having a front-rear direction and the upper end side has a sideways endless belt 42b.
None of them have an endless belt which has a relationship of sandwiching the vegetables w at the same height as the belts 38b and 42b. From these facts, in the bent portion p2, the holding force of the endless belt surrounding the bent portion p2 is reduced.

Also, here, the rear pulleys 35a, 40a
Endless belts 38a and 42a guided to the bottom side apply an arc-shaped conveying force to the vegetables w at the arc-shaped holding portions u1 'and u3', whereas the endless belts 38b having a front-rear and straight-forward shape on the lower side. In this state, the vegetable w is given only a conveying force by a relatively small rearward contact force, and the upper side of the sideways straight endless belt 42b only gives a conveying force by a relatively small horizontal contact force. As a result, the state of the plurality of forces applied to the vegetables w from the endless belt surrounding the bent portion p2 becomes more unsuitable for rotation of the vegetables w than in the related art. Therefore, the vegetables w passing through the bent portion p2 do not have a forced rotational displacement unlike the related art, and the vegetables w caused by the rotational displacement of the vegetables w
Damage will not occur. Also, there is no damage caused by the belt tension pressing the vegetables.

On the other hand, the tendency of the vegetables w being transported to fall downwards increases due to the decrease in the nipping and transporting force of the vegetables w at the bent portion p2. When w starts to fall, the support disk 44 of the transport assisting tool 43 supports the root and prevents the fall, and furthermore, rotates together with the root and the endless belt that surrounds the bent portion p2. It works so that conveyance is performed accurately.

As shown in FIG. 6, the rear end p3 of the holding side straight range portion u2 'of the front-rear straight endless belt 38b on the lower side is connected to the upper side lateral straight endless belt 42b.
And the starting end p4 of the holding-side straight range portion u4 'of the upper side horizontal endless belt 42b is positioned rearward of the holding-side straight range portion u4'. Since the endless belt 38b is located on the side opposite to the vegetable release side than the sandwiching side straight range portion u2 ', the frontward and rearward sandwiching side straight range portion u2' is located on the front and rear sides surrounding the bent portion p2. As a whole, it moves straight backward in the rearward direction, and the horizontal straight holding portion u4 'is bent at the bent portion p2.
, So that the vegetables w in the bent portion p2 are provided with an appropriate conveying force from the two endless belts 38b and 42b. It is accurately moved toward the lateral holding transport path h2 of the lateral transport section 33b.

The vegetables w after passing through the bent part p2 are transferred to the horizontal transport part 33 according to the second and fourth aspects.
The sheet B is conveyed along the horizontal pinch conveyance path h2. During this conveyance, the horizontal portion f02 of the front-rear conveyance unit 33a exists below the endless belt 42a on the front side of the horizontal conveyance unit 33b, and therefore, the vegetables w conveyed by the horizontal conveyance unit 33b are on the lower front side. Is supported by the horizontal portion f02, so that the lower portion of the vegetable w is held in the horizontal pinching and conveying path h.
During the transport by the second transport unit 2, the posture is stably held, and it is difficult to contact members other than the endless transport belt, and damage due to contact with other members is prevented.

Next, a modified example of the belt nipping and conveying means 13 will be described with reference to FIGS. The first modified example will be described. As shown in FIG. 4B (1), a pair of left and right endless straight belts 38a in the front-rear direction are provided on the lower side.
′, A forward / rearward transport section 33a having 38b is located,
As shown in FIG. 4B (2), a horizontal transport section 33b having a pair of front and rear horizontal endless belts 42a 'and 42b is located on the upper side. According to this, the front-rear portion f11 on the upper side and the horizontal portion f on the lower side in the above embodiment.
02, the endless belts 38a ', 42a
'Is shorter than these corresponding endless belts 38a, 42a.

The second modified example will be described. As shown in FIG. 5A (1), a forward / rearward transport section 33a having a pair of right and left forward / rearward straight endless belts 38a 'and 38b is located on the lower side. On the upper side, an endless belt 42a bent so as to include a front-rear portion f11 and a horizontal portion f12 as shown in FIG. 5A (1), and the horizontal portion f
12 having a horizontal straight endless belt 42b positioned on the rear side thereof so as to oppose the horizontal transport unit 33b.
Position. According to this, the endless belt 3 is not provided because the lower side portion f02 in the above embodiment does not exist.
8a 'is shorter than the corresponding endless belt 38a.

A third modified example will be described. An endless belt 38a which is bent so as to have a front-back portion f01 and a horizontal portion f02 as shown in FIG. A front-rear straight endless belt 38b positioned on the side of the facing portion f01 so as to face the facing portion f01.
5B (2), and a horizontal transport section 33b having a pair of front and rear horizontal endless belts 42a 'and 42b is located on the upper side. According to this, the endless belt 42a 'is shorter than the corresponding endless belt 42a because the front-rear portion f11 on the upper side in the above embodiment does not exist.

[0060]

According to the present invention configured as described above,
The following effects can be obtained. That is, according to the first aspect of the present invention, soft vegetables such as spinach are harvested accurately without being damaged by the rotational displacement or being damaged by contact with other objects while being transported by the belt nipping transport means. Make it possible. In addition, since the harvested vegetables are conveyed laterally by the lateral conveyance section, the front and rear lengths of the machine body can be kept small, and a suitable amount of vegetables can be accumulated on the machine body.

According to the second aspect, the relatively upper specific side surface of the vegetables nipped and transported by the forward-rearward transport portion is supported by the forward-rearward portion of the endless belt on the upper side to stably move forward and backward. It can be transported to the transport end of the direction transport section, and then can be stably transferred to the horizontal transport section, thereby avoiding contact between the vegetable upper part and other objects, and preventing damage to the vegetable upper part during transport. It can be effectively prevented.

According to the third aspect of the present invention, the relatively lower front side surface of the vegetables nipped and transported by the horizontal transport section is supported by the horizontal section of the lower endless belt, and the horizontal transport section is stabilized. Can be conveyed to the end of conveyance, whereby contact between the lower portion of the vegetables and other objects can be avoided, and damage to the lower portion of the vegetables during the conveyance can be effectively prevented.

According to the fourth aspect of the present invention, a relatively upper specific side surface of the vegetables nipped and conveyed by the front-rear conveyance unit is supported by the front-rear parts of the endless belt on the upper side, so that the upper part of the vegetables is supported. Can be stably transported to the transport end of the forward-rearward transport section and can be stably shifted to the horizontal transport section, and the relatively lower front side of the vegetables nipped and transported by the horizontal transport section is an endless lower side. By supporting the horizontal portion of the belt, the lower portion of the vegetables can be stably transported to the transport end of the horizontal transport portion, and damage to the whole vegetables during transport can be effectively prevented.

According to the fifth aspect of the present invention, the outer two sides surrounding the bent portion forming a connection point between the front-rear nip conveyance path of the front-rear conveyance section and the horizontal nip conveyance path of the horizontal conveyance section. Among them, the whole of one side is formed in the holding side straight range portion of the front-rear straight endless belt on the lower side and is moved linearly rearward, and the whole of the other side is As shown in FIG. 10, the endless belt forming each side is formed in the holding side straight range portion of the endless belt in the horizontal direction on the upper side and is moved horizontally in the horizontal direction. Vegetables that have reached the inside of the bent portion p2 can be more smoothly conveyed to the laterally sandwiched conveying path than when the arc portions m are included in the sandwiching range portions u2 and u4 of 38b and 42b. FIG. 10 shows a comparative example with the present invention, in which the same parts as those in the previous embodiment are denoted by the same reference numerals.

According to a sixth aspect of the present invention, a front-rear straight endless belt 38b located on the lower side opposite the vegetable discharge side and a horizontal straight endless belt located rearward on the upper side. The belt 42b can be arranged compactly and simply.

According to the seventh aspect of the present invention, the endless belt surrounding the bent portion, which is a connection point between the front-rear nip conveyance path of the front-rear conveyance section and the horizontal nip conveyance path of the horizontal conveyance section, is formed. Even if the nipping and conveying force applied to the vegetables that have reached here is small, it is possible to reliably convey these vegetables from the front-to-back conveyance unit to the horizontal conveyance unit without falling and stopping.

According to the eighth aspect of the present invention, the vegetables in the bent portion can be supported with low resistance by a simple structure, and the sandwiching and conveying of the vegetables by the belt sandwiching and conveying means can be effectively assisted.

According to the ninth aspect, the vegetables can be conveyed accurately in the bent portion without applying unnecessary pulling force to the vegetables.

[Brief description of the drawings]

FIG. 1 is a plan view showing a soft vegetable harvester according to one embodiment of the present invention.

FIG. 2 is a front view of the harvester.

FIG. 3 is a side view of the harvester.

FIG. 4 is a view showing a belt holding and conveying means of the harvester and a modification thereof.

FIG. 5 is a view showing a modification of the belt holding and conveying means of the harvester.

FIG. 6 is a plan view showing a bent portion of the belt holding and conveying means of the harvester.

FIG. 7 is a plan view showing a transport sheet used in the harvester.

FIG. 8 is an operation explanatory view of the harvester.

FIG. 9 is a diagram showing a use state of the seat.

FIG. 10 is a plan view showing a comparative example with respect to the bent portion shown in FIG.

FIG. 11 is a plan view showing a conventional example.

FIG. 12 is a partial plan view showing a part of a conventional example.

FIG. 13 is an operation explanatory view of a conventional example.

[Explanation of symbols]

13 Belt Nipping and Conveying Means 33a Forward / Backward Conveying Unit 33b Lateral Conveying Unit 38a Endless Belt 38a 'Endless Belt 38b Endless Belt 42a Endless Belt 42a' Endless Belt 42b Endless Belt 35b Pulley 40b Pulley 43 Transport Auxiliary Means 44 Support Disk f01 Front-rearward part f02 Lateral part f11 Front-rearward part f12 Lateral part h1 Front-rearward nipping transport path h2 Lateral nipping-transport path p2 Nipping transport path part (bent part) s2 'Supporting shaft u2' Front-rear nipping side in bent part -Shaped range part u4 'Side-to-side holding side straight-shaped range part in bent part w Vegetables (spinach, etc.)

Claims (9)

[Claims] 1. A belt holding and conveying means having a forward and backward conveying section and a laterally conveying section, wherein a vegetable vegetated in a field is pinched by the front and rear conveying section and conveyed obliquely rearward and upward while the body is running. A harvester that pulls the vegetables sideways and discharges them to the side of the machine body by a horizontal transport section while pulling the vegetables up and down from the ground. At least on the lower side, a front-rearward conveying section having a pair of left and right front-rear straight endless belts is located, and at least on the upper side, a horizontal conveying section having a pair of front-rear front-rear straight endless belts is positioned. A soft vegetable harvesting machine characterized by having been made. 2. A vehicle comprising a belt nipping and conveying means having a forward and backward conveying section and a laterally conveying section, wherein the front and rear conveying section sandwiches vegetables vegetated in a field and conveys the diagonally upward rearward while the body is running. A harvesting machine that pulls the vegetables sideways by a horizontal transport section and discharges the vegetables to the side of the machine body, wherein the belt nipping and transporting means has a structure of two or more vertical stages. , At least on the lower side, a front-rearward conveying portion having a pair of left and right front-rear straight endless belts is positioned, and on at least the upper side, an endless bent portion having a front-rearward portion and a lateral portion is provided. A soft vegetable harvesting machine, comprising: a horizontal conveying section having a flat belt and a horizontal straight endless belt positioned on the rear side of the horizontal belt so as to face the horizontal section. 3. A belt holding / conveying means having a forward / rearward conveying section and a laterally conveying section, wherein during traveling of the machine body, the front / rearward conveying section clamps vegetables vegetated in a field and conveys the vegetables obliquely rearward and upward. While harvesting the vegetables from the ground by a horizontal transport unit, and then transporting the vegetables to the side and discharging them to the side of the machine. None, at least on the lower side, an endless belt bent so as to have a front-rearward portion and a horizontal portion, and a front-rear straight-line positioned on the side of the front-rearward portion so as to face the front-rearward portion. A soft vegetable harvesting machine, comprising: a front-rearward conveying section having an endless belt; and a horizontal conveying section having a pair of front and rear endless horizontal belts at least on an upper side. 4. A belt holding / conveying means having a forward / backward transport section and a laterally forward transport section, wherein during traveling of the machine body, the front / rearward transport section sandwiches vegetables vegetated in a field and transports the vegetables diagonally rearward and upward. While harvesting the vegetables from the ground by a horizontal transport unit, and then transporting the vegetables to the side and discharging them to the side of the machine. None, at least on the lower side, an endless belt bent so as to have a front-rearward portion and a horizontal portion, and a front-rear straight-line positioned on the side of the front-rearward portion so as to face the front-rearward portion. An endless belt having an endless belt is positioned, and at least on the upper side, an endless belt bent so as to have a front-rearward portion and a laterally-facing portion, and facing the laterally-facing portion of the belt. On the back of this A soft vegetable harvesting machine, wherein a horizontal conveying section having a positioned horizontal straight endless belt is located. 5. The rear end of the front-end straight endless belt located on the side opposite to the vegetable discharge side of the lower endless belt is connected to the upper endless endless belt. The rear end of the horizontal straight endless belt on the rear side of the upper endless belt is located at the rear side of the rear end of the horizontal straight endless belt. The transport start end of the section is located on the opposite side of the vegetable release side than the sandwiching side straight range portion of the front-back straight endless belt located on the opposite side of the vegetable release side of the lower endless belt. The soft vegetable harvester according to any one of claims 1 to 4, wherein: 6. A rear end portion of a front-rear straight endless belt located on a side opposite to a vegetable discharge side of a lower endless belt, and a rear side straight end portion of an upper endless belt. 6. An endless belt shaped like an endless belt which is wrapped around a single pulley or upper and lower pulleys arranged concentrically. The described soft vegetable harvester. 7. A transport for supporting a lower end portion of a vegetable below a nipping transport path portion formed at a connection point between a front-rear nipping transport path of a front-rear transport section and a lateral nipping transport path of a horizontal transport section. The soft vegetable harvester according to any one of claims 1 to 6, further comprising auxiliary means. 8. A transport assisting means, comprising: a support shaft concentric with a rotation center of a pulley for guiding a rear end portion of a front-rear nip conveyance path of a pair of left and right endless belts of a front-rear conveyance section, which is a vegetable discharge side. The soft vegetable harvester according to claim 7, wherein a support disk for supporting the lower end of the vegetables is rotatably mounted on the support shaft. 9. A support disk rotated in a body with a pulley for guiding a rear end portion of a front-rear nip conveying path of a vegetable discharging side of a pair of left and right endless belts of a front-rear conveying section. 8. The soft vegetable harvester according to claim 7, wherein the disk is configured to support a lower end of the vegetables conveyed in the nipping conveyance path portion.