JP3436615B2 - Agricultural harvester - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural product harvesting machine for harvesting and selecting root vegetables such as sweet potatoes, potatoes, konjac potatoes from a field, and storing them in a container. The present invention relates to an agricultural product harvester in which a work chair is arranged on a worker's step provided at the rear.

[0002]

2. Description of the Related Art Conventionally, as an agricultural product harvester that collects root vegetables such as sweet potatoes, potatoes and konjac potatoes from the field, sorts them, and stores them, an inclined conveyor section that is inclined from the lower front of the self-propelled machine to the upper center of the machine. A conveyor device that conveys agricultural products in the field that has been dug by and can perform sorting work by a sorting and conveying unit that is horizontally installed in the rear part, and selects harvested products at the rear of the machine that is behind this conveyor device. The applicant of the present invention has proposed an agricultural product harvesting machine provided with steps for workers to perform work and machine control.

[0003]

By the way, in the above-mentioned agricultural products harvesting machine, which is a small-sized agricultural products harvesting machine which is supposed to have one or two passengers, it is necessary to carry out a sorting operation of harvested products and a machine operation. When you go or go, you often get on and off from the step behind the aircraft, and if you install a work chair on the step, it will be an obstacle when getting on and off, so a work chair is provided on the step behind the aircraft. In most cases it is not.

For this reason, the worker behind the machine is forced to stand and scoop, and as the sorting work of the harvested product is prolonged, the work efficiency becomes lower, and the sorting / conveying section of the conveyor device is operated by a hand. There is a risk of getting caught and injuring yourself.

For this reason, even in a small-sized agricultural product harvester for one or two passengers, a work chair that does not hinder the user from getting on and off the step and has a sense of stability when sitting down Is strongly requested.

The present invention has been made in consideration of such a situation, and provides a work chair which does not interfere with getting on and off a step for an operator and can give a sense of stability when sitting down. The purpose of the present invention is to provide an agricultural product harvesting machine equipped.

[0007]

In order to achieve the above-mentioned object, the agricultural product harvester of the present invention collects agricultural products in a field excavated from the lower front of the self-propelled machine through the upper center of the machine to the rear of the machine. A digging conveyor device for transporting is provided, and a step for workers for carrying out aircraft operation and sorting work is provided behind the digging conveyor device, and a work chair is attached to the self-propelled aircraft at the top of this step. It is rotatably arranged so that it can be separated and rotates with the work chair.
The contact end of the
A rotation support mechanism including a top plate is provided to perform the rotation.
The support mechanism is provided with the stopper when the work chair is used.
Engaging the plate in the abutting position prevents rotation of the work chair in a direction away from the self-propelled body, fixing the work chair at a position above the step, and When using the stopper plate
It is characterized in that the work chair is retracted from the abutting position, the work chair is freely rotated in a direction away from the self-propelled machine body , and the work chair is supported so as to be disengaged from the upper position of the step. In addition, the abutment end is connected to the stopper plate.
Mounted so that it can move back and forth to adjust the contact distance
Characterized by being formed at the end of the fine adjustment bolt
It

[0008]

In the agricultural product harvesting machine of the present invention, the work chair provided at the rear of the digging conveyor device is rotatable so as to move toward and away from the self-propelled machine body, and when the work chair is used, Since the rotation support mechanism prevents the work chair from rotating in the direction away from the self-propelled body, it is possible to assume a stable sitting posture by sitting down on the work chair and stretching the legs.

Further, when the work chair is not used, the rotation support mechanism allows the work chair to freely rotate in the direction away from the self-propelled machine body, so that the work chair can be moved away from the self-propelled machine body. By rotating the work chair, the work chair can be removed from the upper position of the step, and the user can get on and off the step without being disturbed by the work chair. Furthermore, adjust the amount of adjustment with the fine adjustment bolt.
The work chair can be set according to the body shape of the worker by setting it appropriately.
The fixed position of the child can be set appropriately.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a potato harvester according to an embodiment of an agricultural product harvester of the present invention.

As shown in these figures, the potato harvester 1
The aircraft 2 is equipped with a crawler 3 that is paired with left and right and is capable of spinning (supertrust) turning. The driving force to the crawlers 3 is transmitted from the engine 4 mounted on the front side of the one side of the machine body 2 through the transmission 5 provided between the crawlers 3 at the lower position near the rear part of the machine body 2. ing.

Further, a digging conveyor device 10 for digging agricultural produce in the field is provided from the lower front part of the machine body 2 between the crawlers 3 to the upper part of the machine body to the rear part of the machine body, and this conveyor device 10 is also driven as described above. It is provided by the driving force of the engine 4.

The digging conveyor device 10 is composed of a digging blade 11 inclining forward and an endless link rod, and descends at a predetermined angle toward an inclined conveying section 12 having slats at predetermined intervals and the end. The sorting / conveying unit 13 thus arranged is supported by the pair of left and right side frames 6 of the machine body 2.

Further, the excavation conveyor device 10 is rotatable in the up-down direction about a rotation shaft (rotation fulcrum) (not shown) at its rear end, and is provided between the machine body 2 and the side frame 6. It can be adjusted up and down by expanding and contracting a hydraulic cylinder (not shown).

Here, the transmission 5 that receives power from the engine 4 and shifts gears is equipped with a hydraulic continuously variable transmission (HST) (not shown) for performing a continuously variable shift, and is not combined with a shift gear. In addition to outputting gears in steps / steps, connecting / disconnecting power transmission via a side clutch and a differential device allows the crawler 3 to run steplessly / steplessly, and spin turning (super-field turning) I am doing it.

Further, the transmission power is transmitted from the transmission 5 to the excavation conveyor device 10, and the traveling speed of the conveyor can be continuously and steplessly adjusted. By combining with the stepless or stepped traveling of No. 3, the mining work speed can be freely set.

A first operating section 20 and a second operating section 21 are provided on both sides of the body 2 behind the engine 4, and the first operating section 20 and the second operating section 21 are further provided.
A step 24 is provided behind. In step 24, the base is connected to a support arm 25 rotatably attached to the lower portion of the machine body 2, and the support arm 25
By rotating the base of the step 24, the step 24 can be tilted to a substantially horizontal state or folded to the side of the machine body 2.

Then, step 2 in which it is tilted to a substantially horizontal state
By riding on No. 4, the first operation unit 20 and the second operation unit 20
The operation unit 21 can be operated to operate the machine body and drive the unit, and the sorting and conveying unit 13 can perform sorting work.

At the rear of the machine body 2, a work chair 31 having a seat fitting 32 forming a backrest portion by a rotation support mechanism 30 is rotatably arranged so as to come into contact with and separate from the machine body 2. The details of this will be described later.

A step 28 and a work chair 29 are also provided on the side of the machine body 2 on the side opposite to the engine 4, and at this work position, other than the harvested potatoes conveyed by the inclined conveyance section 12. Vines, foliage, large soil blocks,
Pretreatment work such as removal of stones and separation of Imoto connection stem is performed. The steps 28 and the work chair 29 may be fixed to or detached from the side of the machine body 2.

On the bracket 41 projecting forward from the left and right side frames 6 of the above-mentioned digging conveyor device 10, there is provided a ridge following device 40 which follows the movement of the machine body 2 along the length direction of the ridge to be harvested. Has been. The pair of wheels 42 of the ridge-following device 40 rolls on both inclined shoulders of the ridge to be harvested, and can be vertically adjusted by the vertical adjustment mechanism 43 and can be horizontally adjusted by the slide mechanism 44. It is said that.

Further, behind the machine body 2, a container mounting table 50 for mounting one container (not shown) is provided. The container mounting table 50 is provided with a support arm 52 connected to the air cylinder 51 and a holder 53 supported by the support arm 52. The holder 53 is folded toward the machine body 2 by driving the air cylinder 51,
It is designed to project from the body 2 to the outside.

When the holder 53 of the container mounting table 50 is used by projecting outward from the machine body 2, the air cylinder 51 contracts and automatically tilts depending on the weight of the object to be stored in the container. When the weight is small, the container approaches the side of the sorting and conveying unit 13 and gradually increases as the weight increases.
It is separated from the side to reduce damage to the stuff.

Further, container mounting bases 60 and 70 are also provided on the front side of the machine body 2, both of which are holders attached to the support arms 62 and 72 by driving an air cylinder (not shown) in the same manner as above. 63 and 73 are folded to the side of the machine body 2 or projected outward from the machine body 2.

Further, on the container mounting table 70 side,
A holder 74 is rotatably attached to the holder 73 via a rotating member 75. When the holder 74 is rotated to project from the holder 73, an empty container is placed on the holder 74 side. Therefore, the containers can be easily stacked on the holder 73.

Then, these container mounting tables 60, 7
Even if it is zero, it is automatically tilted by the weight of the container inside, as described above.

On the outer surface (side plate) of each of the first operating section 20 and the second operating section 21, a container locking hook 22 is fitted and locked in a handle hole of an empty container.
Is provided, and a contact member 23 made of an elastic body (for example, a rubber plate or a synthetic resin plate) is provided below the container locking hook 22.

Then, the empty container locking hook 22 is fitted and locked in the handle hole of the container, and the lower end of the container is brought into contact with the abutting member 23 so that the spare container can be extended in the left-right direction. Can be locked. It is also possible to prepare a total of two spare containers by putting another empty spare container in the vertical position in this locked empty container.

A hollow is provided below the sorting / transporting unit 13 so that soil, contaminants, etc. adhering to the harvested products on the sorting / transporting unit 13 can drop directly into the field from the void. . A gate-shaped grip 26 is provided at a position above the step 24 behind the sorting / transporting unit 13, and the operator's body is located behind the sorting / transporting unit 13 between the grips 26. A protector 27 is provided to prevent it from falling to the side.

On one side of the protector 27,
When the operator is caught in the sorting and conveying unit 13,
A stop switch (not shown) for stopping the driving of the conveyor device 10 is provided.

A step 28 for a worker and a work chair 29 are provided on the side of the machine body 2 on the side opposite to the engine 4, and the work is carried by the inclined carrying section 12 while sitting on the work chair 29. Remove vines, foliage, large soil blocks, stones, etc. other than potatoes from harvested products, and excavate blades 9
It is possible to carry out a pretreatment work such as mainly separating the stalk and the connecting stem from the harvested product which is dug up and connected in a collective manner and conveyed. The working chair 29 may be detachably provided.

4 to 6 show the rotation support mechanism 30 described above.
It shows the details of. As shown in these drawings, the frame 3 connected to the work chair 31 of the rotation support mechanism 30.
3 is rotatably attached to the support portion 7 of the machine body 2. Flange 34 provided at the base of frame 33
A fine adjustment bolt 35a is attached to the rear end of the fine adjustment bolt 35a so that the fine adjustment bolt 3a is adjusted by a nut 35b.
The position of 5a is fixed.

Further, the support portion 7 of the machine body 2 is provided with a U-shaped plate holding portion 36, and a grip 37 is attached to a support pin 36 a provided on the plate holding portion 36.
A stopper plate 38 having a is supported rotatably in the vertical direction through the elongated hole 38a. Here, as shown in FIG. 4, when the stopper plate 38 is rotated vertically upward, the stopper plate 38 descends due to its own weight through the elongated hole 38a engaged with the support pin 36a,
The lower end portion 38b of the stopper plate 38 engages with the lower end portion 36b of the plate holding portion 36.

If the stopper plate 38 is to be rotated in the vertical direction in this state, the stopper plate 3
8 is the lower end portion 38b of the plate holding portion 36.
To prevent the stopper plate 38 from rotating.
Therefore, in this state, when the work chair 31 is pulled to the front side, the end portion 35c of the fine adjustment bolt 35a comes into contact with the stopper plate 38, and the rotation of the work chair 31 is restricted.
The position of the work chair 31 on the step 24 is fixed.

Further, the work chair 3 on the step 24
When adjusting the fixing position of 1, fine adjustment bolt 35a
By turning clockwise the end 35c of the fine adjustment bolt 35a.
Is pushed out of the flange 34, the contact distance to the stopper plate 38 is changed, and the stopper plate 38 is fixed on the side close to the machine body 2 on the step 24.

On the other hand, when the fine adjustment bolt 35a is turned counterclockwise to return the end portion 35c of the fine adjustment bolt 35a to the flange 34 side, the contact distance to the stopper plate 38 is changed, and the step 24 is performed. It is fixed at a position far from the fuselage 2 above.

Therefore, since the distance between the work chair 31 and the machine body 2 which is the fixed position on the step 24 is set by appropriately setting the adjustment amount by the fine adjustment bolt 35a, it is possible to match the system of the operator. The fixed position of the work chair 31 can be set appropriately.

Further, it can be adjusted even at the height position of the work chair 31, and any one of a plurality of positioning holes 39a of the shaft 39 provided in the lower portion of the work chair 31 of FIG. The height position of the work chair 31 can be adjusted by engaging with the portion.

On the other hand, when the work chair 31 is released from the fixed state, the stopper plate 38 in the state shown in FIG. 4 is temporarily pulled up and the lower end portion 38b of the stopper plate 38 and the lower end portion 36b of the plate holding portion 36 are engaged with each other. By removing
As shown in FIG. 5, the stopper plate 38 can be rotated vertically downward, which allows the work chair 31 to be removed from above the step 24.
It is possible to get on and off from step 24 without being disturbed.

Next, the operation of the variety harvester 1 having the above-mentioned configuration will be described. First, sweet potato with the harvester 1.
When harvesting root vegetables such as potatoes, konjac potatoes, and ginseng from the field, the fixed position of the work chair 31 on step 24 is adjusted.

In this case, as described above, the adjustment amount of the fine adjustment bolt 35 is large, that is, the fine adjustment bolt 35a.
By increasing the pushing amount of the end portion 35c from the flange 34, the work chair 31 on the step 24 is fixed at a position close to the machine body 2, and conversely, when the adjustment amount is reduced, the work chair 31 is separated from the machine body 2. Because it is fixed in position,
The fixing position of the work chair 31 is adjusted so that an appropriate margin can be provided between the work chair 31 and the machine body 2 when the work chair 31 is fixed according to the system of the operator.

Further, the work chair 3 on the step 24
Even at the height position of 1, the work chair 3
One of the positioning holes 39a of the shaft 39 of No. 1 is engaged with the end of the frame 33, and the height is adjusted so that the sitting posture is stable.

Further, when the work chair 31 is used for the work, the grip 37 is used to rotate the stopper plate 38 vertically upward, and then the work chair 31 is rotated to the front side to move the stopper plate 38. The end portion 35c of the fine adjustment bolt 35a is brought into contact with the side surface. In this state,
A stable seated posture can be taken by sitting on the work chair 31 and sitting in a sitting posture.

On the other hand, when the work chair 31 is not used, the stopper plate 38 is rotated vertically downward by the grip 37 to remove the stopper plate 38 from the movement path of the fine adjustment bolt 35a as described above. With this, the work chair 31 can be pushed out in the direction away from the top of the step 24, so that the work chair 31 does not get in the way and the user can easily get on and off the step 24.

When the root crops such as sweet potato, potato, konjac potato, and root ginseng are harvested from the field by the potato harvesting machine 1, the wheels 42 of the ridge-following device 40 are attached to both inclined shoulders of the ridge to be harvested. Transferring and excavating conveyor device 10
When the excavating blade 11 is vertically moved by a hydraulic cylinder to adjust the excavation depth and the harvested product is excavated by the excavation blade 11 as the machine body 2 advances, soil is attached to the excavated harvested product. In this state, the slanted transport unit 12 transports the slanted upper portion of the machine body 2.

During this transportation, soil falls from between the link rods, and harvested vines, foliage, large soil blocks, stones, etc. other than potatoes are harvested from the harvested products transported on the inclined transport unit 12 by the worker sitting on the work chair 29. When the pretreatment work such as mainly removing the stalk and the connected stems is performed from the harvested products that are removed or are collectively coupled and transported, the harvested products are sorted and transported in the container 13 in a state that they are easily packed in containers. Brought to the side.

At the same time as performing such a pretreatment operation, it is possible to perform an operation of packing only the potatoes in the harvested product into the container on the holder 73 of the container placing table 70. In addition, when the harvest in the container on the holder 73 is full, the holder 63 of the adjacent container mounting table 60 is
The container on the holder 73 is moved to the upper position, or the empty container placed on the holder 74 rotated from the holder 73 is piled up on the container on the holder 73 to continue the packing operation of the harvested products. be able to.

At this time, since the container mounting table 70 is provided with an air cylinder (not shown), the container is approaching the inclined transfer unit 12 side at the beginning when the weight of the container is small and the weight thereof is small. Becomes gradually separated from the inclined transporting unit 12 as the size becomes larger, and the damage to the food is reduced and the product is accommodated.

Then, only the potatoes in the harvested products transported to the sorting and transporting unit 13 side are sorted by the state of step 24 or the state of sitting on the work chair 31. A sorting operation is performed and the container is placed in the container placed on the container placing table 50. At this time, when the worker sits down on the work chair 31 to perform the packing work of the agricultural products, the work chair 31 is stabilized by stiffening the legs in the sitting posture, and the packing work can be performed in a comfortable posture. On the other hand, when the work chair 31 is not used, it is possible to remove the work chair 31 from above step 24 by removing the stopper plate 40, so that the work chair 31 can get on and off from step 24 without being disturbed. Can be done easily.

Further, since the sorting / conveying unit 13 is inclined downward to the rear, the operation range of the operator's hand / arm is substantially equal to that of the sorting / conveying unit 13, so that the sorting work is easy and the fatigue is reduced. .

Further, since the container mounting table 50 is provided with the air cylinder 51, the container is approaching the sorting / conveying unit 13 at the beginning when the weight of the container is small, and as the weight thereof increases. It gradually moves away from the sorting / conveying unit 13 and is housed with less damage to the potatoes.

When the potatoes in the container on the container mounting table 50 are full, the harvesting work is temporarily stopped and the spare container supported by the container locking hook 22 is replaced. Resuming harvesting work. Not only can the operator who gets on step 24 during such sorting work grasp the grip portion 26, but also the protector 2
It is possible to prevent the conveyor device 10 from being driven to the side of the sorting and conveying unit 13 by 7 and to stop the driving of the conveyor device 10 by a stop switch (not shown).

Further, the excavation conveyor device 10 is capable of continuously and stepwise variable speed adjustment of its moving speed, and
Since it can move up and down with respect to the machine body 2, by selecting an appropriate moving speed and digging depth according to the field condition and the crop condition, a highly accurate and efficient harvesting work can be performed.

As described above, in this embodiment, the work chair 31 provided at the rear of the digging conveyor device 10 is installed in the body 2
Since the work chair 31 is used so as to move toward and away from the work chair 31, the rotation support mechanism 30 prevents the work chair 31 from turning in a direction away from the machine body 2. By sitting on the work chair 31 and stretching the legs, it is possible to take a stable sitting posture.

When the work chair 31 is not used, the rotation support mechanism 30 allows the work chair 31 to freely rotate in the direction away from the machine body 2. Therefore, the work chair 31 is separated from the machine body 2. By rotating in the direction,
The work chair 31 can be removed from the upper position of the step 24, and the stepping on and off can be performed without being disturbed by the work chair 31.

Further, the first operation section 20 is provided on both sides of the machine body 2.
Since the second operation unit 21 is provided and the step 24 is provided below the rear portion of the machine body 2, even one operator can perform the machine operation, the harvesting work of the harvested products, and the container accommodation work of the harvested products. Even though it is a small harvester, it can perform multi-functional work.

Further, since the crawler 3 travels continuously and steplessly while changing the speed, and also enables the spin turn (super-texture turn), the machine body 2 spins stably in a headland or the like. It is possible to move to the next harvest ridge with one turn, and it is possible to turn to the right or left in a well-balanced manner, so that the crawler 3 does not pull the soil in the field greatly.

Further, a ridge tracking device 40 is provided in front of the digging conveyor device 10 along with the movement of the machine body along the length direction of the ridge to be harvested, and a pair of ridges to be rolled and contacted to both inclined shoulders of the ridge to be harvested. Since the wheels 42 are provided so as to face each other so as to be vertically adjustable and horizontally adjustable with respect to the digging conveyor device 10, both wheels 42 accurately follow the ridge to be harvested to automatically steer the machine body. Automatic digging and conveyance by the digging conveyor device 10 are performed. Therefore, the operator can devote most of the time to the sorting work, except for the machine steering operation at the ridge end of the ridge to be harvested. In addition, when the headland is turned at the end of the field, the excavation conveyor device 10 is rotated by a hydraulic cylinder (rotation fulcrum).
By rotating the crawler 3 up and down and raising all of them, the crawler 3 can spin with a small turning radius as well as spin.

[0059]

As described above, according to the agricultural product harvester of the present invention, the work chair provided at the rear of the digging conveyor device is rotatable so as to be brought into contact with and separated from the self-propelled machine body. When using a work chair, the rotation support mechanism prevents the work chair from rotating in a direction away from the self-propelled aircraft, so it is possible to stabilize the work chair by sitting down on the work chair. Can take a sitting posture.

When the work chair is not used, the rotation support mechanism allows the work chair to freely rotate in the direction away from the self-propelled machine body, so that the work chair can be moved away from the self-propelled machine body. By rotating the work chair, the work chair can be removed from the upper position of the step, and the user can get on and off the step without being disturbed by the work chair. Furthermore, according to the body shape of the worker, a work chair
The fixed position of can be set appropriately.

[Brief description of drawings]

FIG. 1 is a perspective view showing a potato harvester according to an embodiment of an agricultural product harvester of the present invention.

2 is a plan view showing the potato harvester of FIG. 1. FIG.

3 is a side view showing the potato harvester of FIG. 1. FIG.

4 is a perspective view showing a rotation support mechanism of the potato harvester of FIG. 1. FIG.

5 is a perspective view showing a rotation support mechanism of the potato harvester of FIG. 1. FIG.

6 is a perspective view showing a rotation support mechanism of the potato harvester of FIG. 1. FIG.

[Explanation of symbols]

1 potato harvester 2 aircraft (monocoque frame) 3 crawlers 4 engine 5 transmission 10 digging conveyor device 20 First operation unit 21 Second operation unit 24 steps 30 Rotation support mechanism 31 work chair 33 frames 34 flange 35a Fine adjustment bolt after adjustment 36 Plate holder 37 grip 38 Stopper plate 40 ridge following device 50, 60, 70 Container mounting table

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01D 13/00-33/14

Claims (2)

(57) [Claims] 1. A digging conveyor device for transporting agricultural products in a digged field is provided from the lower front of the self-propelled aircraft to the rear of the aircraft through the upper center of the aircraft, and the aircraft is operated and selected behind the digging conveyor device. A step for a worker for performing work is provided, and a work chair is rotatably disposed so as to come in contact with and separate from the self-propelled machine body at the upper part of this step, and a step for turning together with the work chair is provided. Applicable to the contact end
A stopper plate that engages with the contact position of the contact end is provided.
The obtaining rotation support mechanism is provided, the rotation supporting mechanism, in use of the work chair, the
Engaging the stopper plate at the abutting position prevents the work chair from rotating in a direction away from the self-propelled machine body.
Then, the work chair is fixed above the step, and when the work chair is not used, the stopper play is performed.
The work chair away from the self-propelled body , and the work chair is supported so as to be disengaged from the upper position of the step.
Agricultural product harvesting machine characterized by that . 2. The stopper plate is formed on the abutting end portion.
It is attached so that it can move back and forth to adjust the contact distance to
Contractor characterized by being formed at the end of the fine adjustment bolt
The agricultural product harvester according to claim 1.