JP2023154334A - vegetable harvester - Google Patents

Abstract

To address the desire for a vegetable harvester including claws capable of raking up foliage parts without giving in resistance of the foliage parts.SOLUTION: A vegetable harvester comprises a raking device 3 installed in front of a pull-out conveying device and raking up foliage parts of crops in a field. The raking device 3 includes claws 18B, on a working side where the claws rake up the foliage parts, provided along a back part located opposite to a raking direction S out of the claws 18B, made of a material harder than that of a raking belt 18, and including fall regulation members 22 for regulating fall of the claws 18B to the back side.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vegetable harvester.

Conventionally, as a vegetable harvesting machine, for example, the vegetable harvesting machine described in Patent Document 1 is known. Conventional vegetable harvesting machines include a pull-out conveyance device (referred to as a "pick-up conveyance device [2]" in the literature) that pulls out crops from the field and transports them backwards, and a pull-out conveyance device that is installed upright in front of the pull-out conveyance device to pick up crops from the field and transport them backwards. The plant is equipped with a raking device (referred to as a "weed splitting device [21]" in the literature) for raking up the stems and leaves. The scraping device includes a lower wheel that is rotatable around a rotational axis extending along the left-right direction of the aircraft, an upper wheel that is rotatable around a rotational axis that extends along the left-right direction of the aircraft, and a lower wheel. and a raking belt that is wrapped around the upper wheel and acts to rak the stems and leaves. The raking belt includes a belt main body that is wound around a lower wheel body and an upper wheel body, and a large number of claws that are provided on the outer circumference of the belt main body and that act to lift up the stems and leaves. The large number of claws and the belt body are integrally formed of an elastic member.

JP2017-63678A

With conventional vegetable harvesters, the claws may not be able to rake up the stems and leaves due to the resistance of the stems and leaves.

In view of the above situation, there is a need for a vegetable harvesting machine that allows the claws to rake up the foliage without succumbing to the resistance of the foliage.

The present invention is characterized by comprising: a pulling and conveying device that pulls out crops from a field and conveys them rearward; and a raking device that is installed upright in front of the pulling and conveying device and that scrapes up the foliage of the crops in the field. , the scraping device includes a lower wheel body rotatable around a rotation axis extending along the left-right direction of the machine body, an upper wheel body rotatable around a rotation axis extending along the left-right direction of the machine body; a raking belt that is wound around the side wheel body and the upper wheel body and acts to raise the foliage part; the raking belt is wound around the lower wheel body and the upper wheel body; and a large number of claws provided on the outer periphery of the belt main body and acting to scrape up the stem and leaf portion, and the large number of claws and the belt main body are integrally formed of an elastic member, and The raking device is provided along a back part of the claws located on the opposite side to the raking direction on the action side where the claws act to rak up the stems and leaves, and is made of a harder material than the raking belt. and includes a fall-down regulating member that restricts the claw from falling toward the back side.

According to this characteristic configuration, even if the nail tries to fall down to the back side due to resistance from the stem and leaf portion, the fall-down regulating member restricts the nail from falling down to the back side. This allows the nails to scrape up the stems and leaves without succumbing to the resistance of the stems and leaves.

Furthermore, in the present invention, it is preferable that the inclination regulating member is constituted by a metal plate that is bent so as to span the back portion and the outer circumferential surface of the belt main body.

According to this characteristic configuration, even if the claw tries to fall down to the back side due to resistance from the stem and leaf portion, the fall-down regulating member is received by the outer circumferential surface of the belt main body. This makes it possible to reliably prevent the nails from falling toward the back.

Furthermore, in the present invention, it is preferable that the fall regulating member is fixed only to the claw.

According to this characteristic configuration, the fall regulating member is not fixed to the belt main body. Here, when the tilting regulating member is fixed to the belt body, when the part of the belt body to which the tilting regulating member is fixed comes into contact with the lower wheel or the upper wheel, the tilting regulating member of the belt body The part to which is fixed bends along the outer circumferential shape of the lower wheel or the upper wheel. If this happens, there is a risk of damage such as a member (for example, a screw) that fixes the fall regulating member to the belt body coming off, or a portion of the falling regulating member fixed to the belt body bending. However, according to the present characteristic configuration, this problem does not occur because the fall regulating member is not fixed to the belt main body.

Furthermore, in the present invention, the claw is formed in a shape that protrudes toward the back side and is bent in a side view, and the inclination regulating member is arranged on a tip side portion and a root side portion of the claw with respect to the bent portion. It is preferable that it is provided over the entire length.

According to this characteristic configuration, the fall regulating member is formed in a shape that follows the bent shape of the claw. This makes it possible to reliably prevent the nails from falling toward the back.

Furthermore, in the present invention, it is preferable that the inclination regulating member is fixed to the tip side portion and the base side portion.

According to this characteristic configuration, the inclination regulating member is fixed to the claw at a plurality of locations, and the fixed locations are located on both sides of the bent portion. Thereby, the fall regulating member can be reliably fixed to the claw.

Furthermore, in the present invention, the scraping device includes a displacement regulating member provided along the inner circumferential surface of the belt main body on the action side and regulating displacement of the belt main body toward the inner circumferential side. It is preferable to have one.

Here, if the inclination regulating member is received by the outer circumferential surface of the belt main body, there is a possibility that the belt main body is pushed by the inclination regulating member and displaced toward the inner circumferential side. Then, when the belt body is displaced toward the inner circumference, the claws will fall toward the back. However, according to this characteristic configuration, even if the belt body is pushed toward the inner circumference by the inclination regulating member, the displacement of the belt body toward the inner circumference is regulated by the displacement regulating member. This makes it possible to reliably prevent the nails from falling toward the back.

Furthermore, in the present invention, the scraping device is provided at a position biased to one side with respect to the center of the pulling and conveying device in the left-right direction of the machine body, and the scraping device is located below the return path along which the claw descends. It is preferable to have an outer cover that covers the side portion from the side opposite to the center in the left-right direction of the body.

Here, in a configuration in which the claws are reinforced by the fall-down regulating member, when the stems and leaves of crops in the field are drawn into the return path, the claws moving down the return path strongly act on the stems and leaves from above, causing the stems and leaves to fall. There is a risk that the part may be thrown between the scraping device and the pulling and conveying device and become jammed. However, according to this characteristic configuration, the lower portion of the return path is covered by the outer cover from the side opposite to the center of the pull-out conveyance device in the left-right direction of the machine body in the left-right direction of the machine body. Thereby, it is possible to prevent the stems and leaves of crops in the field located on the opposite side of the raking device in the left-right direction of the machine body from the center of the pulling and conveying device in the left-right direction of the machine body from being drawn into the return path.

Furthermore, in the present invention, it is preferable that the outer cover is formed in a shape that swells toward the side opposite to the center in the left-right direction of the machine body.

According to this characteristic configuration, due to the swollen shape of the outer cover, a certain distance in the left-right direction of the machine body can be secured between the stems and leaves of crops in the field located at the time of the outer cover and the return route. This makes it more difficult for the stems and leaves of the crop to be drawn into the return path as described above.

Furthermore, in the present invention, the scraping device is provided at a position biased to one side with respect to the center of the pulling and conveying device in the left-right direction of the machine body, and the scraping device is located below the return path along which the claw descends. It is preferable to include an inner cover that covers the side portion from the center side in the left-right direction of the body.

Here, in a configuration in which the claws are reinforced by the fall-down regulating member, when the stems and leaves of crops in the field are drawn into the return path, the claws moving down the return path strongly act on the stems and leaves from above, causing the stems and leaves to fall. There is a risk that the part may be thrown between the scraping device and the pulling and conveying device and become jammed. However, according to this characteristic configuration, the lower portion of the return path is covered by the inner cover in the left-right direction of the machine body from the center side of the pull-out conveyance device in the left-right direction of the machine body. Thereby, the stems and leaves of crops in the field located on the center side of the pulling and conveying device in the left-right direction of the machine body with respect to the raking device can be prevented from being drawn into the return path.

Furthermore, in the present invention, it is preferable that the inner cover is constituted by a single planar plate member extending between an upper end of the inner cover and a lower end of the inner cover.

According to this characteristic configuration, the inner cover does not approach the center of the pull-out conveyance device in the left-right direction of the machine body. This prevents the inner cover from interfering with the stems and leaves of crops in the field (crops to be pulled out by the pulling and conveying device) that are located when the inner cover is applied, and the posture of the stems and leaves being disturbed. can.

It is a left side view showing a carrot harvester. It is a left side view showing a scraping device. 3 is a sectional view taken along line III-III in FIG. 2. FIG. It is a left side view showing a claw and a fall restriction member.

Embodiments for carrying out the present invention will be described based on the drawings. In the following explanation, the direction of arrow F is "the front side of the aircraft," the direction of arrow B is the "rear side of the aircraft," the direction of arrow L is "the left side of the aircraft," and the direction of arrow R is "the right side of the aircraft." ”.

[Overall configuration of carrot harvesting machine]
FIG. 1 shows a carrot harvester (corresponding to the "vegetable harvester" according to the present invention). In this embodiment, the crop means carrots. This harvesting machine includes a traveling body 1, a driving unit 2 on which a driver rides, a raking device 3 that rakes up the foliage of crops in the field, and a pulling and conveying device that pulls out the crops from the field and transports them backwards. 4, a cutter 5 that cuts the crop into the main part (the part to be harvested) and other parts (stems, leaves, etc.), a collection part 6 which collects the part to be harvested, and a cutter 5 which collects the part to be harvested, A post-conveyance device 7 for conveyance is provided.

The traveling body 1 includes a crawler traveling device 8 and a body frame 9 supported by the crawler traveling device 8. The driving section 2 is provided at a location on one side (right side) in the left-right direction of the traveling body 1 at the front part of the traveling body 1. The pulling and conveying device 4 is provided at the other side (left side) of the front portion of the traveling machine body 1 in the left-right direction of the machine body. The scraping device 3 is erected in front of the pulling and conveying device 4 so as to be inclined backward. The scraping device 3 is supported by the pulling and conveying device 4 via an upper frame 10 and a lower frame 11. The cutter 5 is provided between the rear part of the pull-out conveyance device 4 and the rear conveyance device 7. The recovery section 6 is provided at the rear of the driving section 2. The rear conveyance device 7 is provided below the rear portion of the pull-out conveyance device 4 (below the cutter 5) and the recovery section 6.

As the traveling body 1 moves forward, the foliage of the crops in the field is raked up by the raking device 3, and the crops in the field are pulled out by the pulling and conveying device 4 and conveyed toward the rear. . After the crop is cut by the cutter 5 into parts to be harvested and parts such as foliage and foliage, the part to be harvested is supplied to the rear conveyance device 7, while the foliage and other parts are extracted and discharged from the rear end of the conveyance device 4. It ends up falling onto the field. Then, in the rear conveyance device 7, the parts to be harvested are conveyed to the collection section 6, and are sorted by an assistant. Finally, in the collection section 6, the parts to be harvested are collected into a collection bag (flexible container bag), not shown.

The pull-out conveyance device 4 is provided so as to be inclined downward toward the front. The extracting and conveying device 4 is configured to be able to swing up and down around a swing axis X1 extending along the left-right direction of the machine body. A hydraulic cylinder 12 is provided between the pull-out conveyance device 4 and the body frame 9 to vertically swing the pull-out conveyance device 4 . The pulling and conveying device 4 includes a soil-breaking blade 13 that loosens the soil around the crops in the field, and left and right conveyor belts 14 that pulls out the crops from the field and conveys them rearward. The soil-breaking blade 13 penetrates into the field and vibrates, and while the soil around the crop is loosened by the soil-breaking blade 13, the crop is pulled out of the field by the left and right conveyor belts 14 and conveyed toward the rear. That will happen.

[raking device]
As shown in FIG. 2, the scraping device 3 includes a case 15, a lower pulley 16 (corresponding to the "lower wheel" according to the present invention), and an upper pulley 17 (corresponding to the "upper wheel according to the present invention"). ), a scraping belt 18, a displacement regulating member 19, an outer cover 20, an inner cover 21, and a fall regulating member 22. Note that FIG. 2 shows a left side view of the scraping device 3 with the left side of the case 15 removed. Inside the case 15, a lower pulley 16, an upper pulley 17, a scraping belt 18, and a displacement regulating member 19 are provided. The lower pulley 16 is supported by the lower part of the case 15 so as to be rotatable around a rotation axis X2 extending along the left-right direction of the machine body. The upper pulley 17 is supported on the upper part of the case 15 so as to be rotatable around a rotation axis X3 extending along the left-right direction of the machine body.

In FIG. 2, the straight line passing through the rotation axis X2 and the rotation axis X3 is L1, the distance between the rotation axes X2 and X3 is D1, the center of the center distance D1 is C1, and the The direction is indicated by S1. In the raking device 3, the front side with respect to the straight line L1 is referred to as the active side where the claw 18B acts to raise the foliage, and the rear side with respect to the straight line L1 is referred to as the non-active side where the claw 18B does not perform the raking action on the foliage. .

The raking belt 18 includes a belt main body 18A that is wound around the lower pulley 16 and the upper pulley 17, and a large number of claws 18B that act to rak up the foliage. The scraping belt 18 is configured to be driven such that the pawl 18B moves upward on the working side and the pawl 18B descends on the non-working side. The raking device 3 includes a raking path R1 located on the active side, where the claw 18B ascends, and a return path R2, located on the non-active side, where the claw 18B descends. The large number of claws 18B and the belt main body 18A are integrally formed of an elastic member (for example, rubber).

The claw 18B is provided on the outer periphery of the belt main body 18A so as to protrude from the belt main body 18A toward the outer periphery. The claw 18B is formed in a shape that protrudes toward the back and is bent when viewed from the side. The back portion of the claw 18B is a portion of the claw 18B located on the opposite side to the raking direction S1 on the action side. The claw 18B includes a tip end portion 18Bb located on the tip side with respect to the bent portion 18Ba, and a root side portion 18Bc located on the root side (belt body 18A side) with respect to the bent portion 18Ba.

The displacement regulating member 19 is for regulating the displacement of the belt main body 18A toward the inner circumferential side. The displacement regulating member 19 is provided along the inner circumferential surface of the belt main body 18A on the working side. The displacement regulating member 19 extends between an upper position and a lower position with respect to the center C1 of the inter-axial distance D1. The lower end of the displacement regulating member 19 is located near (directly above) the lower pulley 16. The displacement regulating member 19 is supported by the case 15. Specifically, the displacement regulating member 19 is fixed to the right side of the case 15.

In FIG. 3, the center of the pull-out conveyance device 4 (left and right conveyance belts 14) in the left-right direction of the machine body is indicated by C2. The crops pulled out from the field are conveyed toward the rear through the center C2. The scraping device 3 is provided at a position offset to one side (left side) with respect to the center C2.

As shown in FIGS. 2 and 3, the outer cover 20 covers the return route R2 from the side opposite to the center C2 (left side) in the left-right direction of the aircraft. In this embodiment, the outer cover 20 covers the lower part of the return route R2 (the part below the center C1) and the upper part of the return route R2 (the part above the center C1) from the left side. The outer cover 20 is fixed to the left side of the case 15 in a state where it is applied from the left side. The outer cover 20 is formed in a shape that bulges toward the opposite side (left side) from the center C2 in the left-right direction of the machine body. Specifically, the outer cover 20 is formed in a shape that swells toward the left so that the rear side of the outer cover 20 is further away from the claw 18B on the return path R2 side in plan view.

The inner cover 21 covers the return route R2 from the center C2 side (right side) in the left-right direction of the aircraft. In this embodiment, the inner cover 21 covers the lower part of the return route R2 (the part below the center C1) and the upper part of the return route R2 (the part above the center C1) from the right side. The inner cover 21 is fixed to the right side of the case 15 in a state where it is applied from the right side. The inner cover 21 is constituted by a single planar plate member extending between the upper end of the inner cover 21 and the lower end of the inner cover 21. That is, the inner cover 21 is formed of a flat plate.

[Falling control member]
As shown in FIG. 4, the fall restriction member 22 prevents the claw 18B from falling toward the back. The fall regulating members 22 are provided along the backs of all the claws 18B. The fall regulating member 22 is made of a harder material than the scraping belt 18. In this embodiment, the fall regulating member 22 is made of a metal plate. The fall regulating member 22 is formed in a curved shape so as to span the back of the claw 18B and the outer peripheral surface of the belt main body 18A. The fall regulating member 22 is provided across the tip side portion 18Bb and the base side portion 18Bc with respect to the bent portion 18Ba of the claw 18B. The fall regulating member 22 includes a portion 22a along the tip side portion 18Bb, a portion 22b along the root side portion 18Bc, and a portion 22c along the belt main body 18A. The tip of the fall regulating member 22 (portion 22a) does not protrude further toward the outer circumferential side of the belt body 18A than the tip of the claw 18B.

The fall regulating member 22 is fixed to the claw 18B with a plurality of (three in this embodiment) screws 23. Specifically, the inclination regulating member 22 is fixed to the tip side portion 18Bb with one screw 23, and is fixed to the base side portion 18Bc with two screws 23. The fall regulating member 22 is fixed only to the claw 18B. That is, the fall regulating member 22 is not fixed to the belt main body 18A.

[Another embodiment]
(1) In the embodiment described above, the fall regulating member 22 is made of a metal plate. However, the fall regulating member 22 may be made of a material other than metal as long as it is made of a harder material than the scraping belt 18.

(2) In the embodiment described above, the fall regulating member 22 is provided across the tip side portion 18Bb and the base side portion 18Bc with respect to the bent portion 18Ba of the claw 18B. However, the inclination regulating member 22 does not have to reach the tip side portion 18Bb.

(3) In the embodiment described above, the raking device 3 includes the displacement regulating member 19. However, the raking device 3 does not need to include the displacement regulating member 19.

(4) In the above embodiment, the outer cover 20 covers the lower part of the return route R2 and the upper part of the return route R2 from the left side. However, the outer cover 20 may cover only the lower portion of the return route R2 from the left side. Alternatively, the raking device 3 may not include the outer cover 20.

(5) In the above embodiment, the inner cover 21 covers the lower part of the return route R2 and the upper part of the return route R2 from the right side. However, the inner cover 21 may cover only the lower portion of the return route R2 from the right side. Alternatively, the raking device 3 may not include the inner cover 21.

The present invention can be used not only for carrot harvesters but also for radish harvesters and onion harvesters.

3 Raking device 4 Pulling and conveying device 16 Lower pulley (lower wheel)
17 Upper pulley (upper wheel)
18 Belt 18A Belt body 18B Claw 18Ba Bent portion 18Bb Tip side portion 18Bc Root side portion 19 Displacement regulating member 20 Outer cover 21 Inner cover 22 Falling regulating member C2 Center of the pulling and conveying device in the left-right direction of the machine body R2 Return path S Scraping direction X2 Rotation axis center X3 Rotation axis center

Claims (10)

A pulling and conveying device that pulls out crops from the field and conveys them toward the rear;
a raking device installed in front of the pulling and conveying device and raking up the foliage of crops in the field;
The scraping device includes a lower wheel body rotatable around a rotation axis extending along the left-right direction of the machine body, an upper wheel body rotatable around a rotation axis extending along the left-right direction of the machine body, and the lower wheel body rotatable around a rotation axis extending along the left-right direction of the machine body. a wheel and a scraping belt that is wrapped around the upper wheel and acts to scrape up the stem and leaf portion;
The raking belt has a belt main body that is wound around the lower wheel body and the upper wheel body, and a large number of claws that are provided on the outer periphery of the belt body and that act to raise the foliage portion, and the plurality of claws and the belt main body are integrally formed of an elastic member,
The raking device is provided along the back part of the claw located on the opposite side to the raking direction on the action side where the claw acts to rak the stem and leaf part, and is made of a material harder than the raking belt. A vegetable harvester comprising: a fall-down regulating member that prevents the claws from falling toward the back side. 2. The vegetable harvester according to claim 1, wherein the fall-down regulating member is constituted by a metal plate bent so as to span the back portion and the outer circumferential surface of the belt main body. The vegetable harvester according to claim 2, wherein the fall-down regulating member is fixed only to the claw. The claw is formed in a shape that protrudes and bends toward the back side when viewed from the side,
The vegetable harvester according to claim 2, wherein the fall regulating member is provided over a tip side portion and a root side portion of the claw with respect to the bent portion. The vegetable harvester according to claim 4, wherein the fall regulating member is fixed to the tip side portion and the root side portion. 2. The scraping device includes a displacement regulating member provided along the inner circumferential surface of the belt main body on the action side and regulating displacement of the belt main body toward the inner circumferential side. vegetable harvesting machine. The scraping device is provided at a position offset to one side with respect to the center of the pulling and conveying device in the left-right direction of the machine body,
7. The scraping device includes an outer cover that covers a lower portion of the return path along which the claw descends from a side opposite to the center in the left-right direction of the machine. vegetable harvesting machine. The vegetable harvesting machine according to claim 7, wherein the outer cover is formed in a shape that swells toward a side opposite to the center in the left-right direction of the machine body. The scraping device is provided at a position offset to one side with respect to the center of the pulling and conveying device in the left-right direction of the machine body,
The vegetable harvest according to any one of claims 1 to 6, wherein the scraping device has an inner cover that covers a lower part of the return path along which the claw descends from the center side in the left-right direction of the machine. Machine. The vegetable harvester according to claim 9, wherein the inner cover is constituted by a single planar plate member extending between an upper end of the inner cover and a lower end of the inner cover.

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