JPH0630621A - Safety device for farm crop harvester - Google Patents

Abstract

PURPOSE:To prevent the damage of a digging conveyor and a grading conveyor by allowing the transfer-starting end of the grading conveyor to move downward when a foreign material is forced into the gap between the digging conveyor and the grading conveyor. CONSTITUTION:A transfer-starting end of a grading conveyor 19 is closely placed under the delivery end of a digging conveyor 10. When a foreign material A enters between the digging conveyor and the grading conveyor, the transfer- starting end 19a of the grading conveyor turns downward around the delivery end part 19b of the conveyor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a safety device for an agricultural product harvester adapted to harvest root vegetables such as sweet potato, potato, onion, beet, taro, konjac potato, ginseng, and lacquer root. .

[0002]

2. Description of the Related Art Conventionally, as an agricultural product harvester for harvesting root vegetables, for example, potato harvesters, beet harvesters, potato diggers, riding tractors or walk-behind tractors with a digging blade attached, It is known that a digging conveyer device having a link rod chain conveyor connected to the rear part thereof is mounted, and that the link rod chain conveyor is vibrated.

[0003]

The above-mentioned potato harvester, beet harvester, potato digger, etc. are large like imported products and are suitable for use in large-scale fields such as Hokkaido, but small scale. It was not suitable for use in various fields, and it was a general-purpose machine with poor versatility. Also, those equipped with a digging blade on a riding tractor or walk-behind tractor, those equipped with the digging conveyor device, those adapted to vibrate the link rod chain conveyor, etc. should be used in a small field. However, it is only developed by digging the root vegetables mentioned above and releasing them to the field, and the dug root vegetables require a work process of picking them up separately. There was a problem in work efficiency such as doing.

Therefore, a self-propelled agricultural product provided with a digging conveyor for digging and transporting agricultural products vegetated in the field and a sorting conveyor for sorting, from the front to the rear of the center of the body between the left and right traveling devices. A harvester has been proposed by the applicant. In this agricultural product harvester, since the transport end of the digging conveyor and the transport starting end of the sorting conveyor are provided close to each other, foreign matter is present between the transport terminating end of the digging conveyor and the transport starting end of the sorting conveyor. Clogging occurs and overload occurs, and the operator manually sorts on both sides of the sorting conveyor.Therefore, pinch your hand between the transport end of the digging conveyor and the transport start of the sorting conveyor. There was a risk that The present invention is intended to solve the above problems.

[0005]

In order to achieve the above object, the present invention provides (1) digging and transporting agricultural products vegetated in a field from the front to the rear of the center of the body between the left and right traveling devices. In a self-propelled agricultural product harvester provided with a digging conveyor for performing selection and a sorting conveyor for performing sorting, a transport starting end portion of the sorting conveyor is disposed below the transport end portion of the digging conveyor, When a foreign matter is caught between the conveyor and the sorting conveyor and an overload occurs, the transport start end of the sorting conveyor is configured to move downward.

(2) When foreign matter is caught between the digging conveyor and the sorting conveyor and an overload occurs, the transportation start end of the sorting conveyor rotates around the transportation end side as a whole. By doing so, (3) when a foreign material is caught between the digging conveyor and the sorting conveyor and an overload occurs, the transport start end of the sorting conveyor is moved from the middle of the sorting conveyor. It is characterized in that it is moved downward by rotating.

[0007]

With the above-described structure, the safety device for an agricultural product harvester according to the present invention is provided below the transporting end of the digging conveyor with the transporting start end of the sorting conveyer being close to each other. When a foreign substance is caught in between and an overload occurs, the transport start end of the sorting conveyor moves downward and the overload is eliminated, so damage to both conveyors is avoided. Further, even when the operator's hand is caught between the digging conveyor and the sorting conveyor, it does not cause a serious accident.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 6 to 9, reference numeral 1 denotes a potato harvester, and the potato harvester 1 is equipped with crawlers 3 and 3 which are laterally paired to a body 2 and are capable of super-intelligible turning. An engine 4 is mounted on the machine body 2 on the front side of the crawlers 3 and 3, and a generator driven by the engine, a hydraulic pump and the like (not shown) are mounted in the vicinity thereof. A transmission 5 is provided at a lower position on the front side of the machine body 2 between the crawlers 3 and 3. In addition, from the lower front of the machine body 2 through the transmission 5 to the upper center of the machine body, the agricultural products vegetated in the field are excavated and conveyed backward, and the excavation conveyor device 6 inclined so that the tip side descends. The conveyor device 6 has a base portion pivotally supported so that a front portion thereof can move up and down. A control unit 7 is provided on the other side of the machine body 2 opposite to the engine 4.

In the excavation conveyor device 6, excavation blades 9 are attached to the tip portions of the left and right side frames (frames) 8, link rods are provided between the side frames 8 and 8 and slats are provided at predetermined intervals. The excavation conveyor 10 is wound, and a tilting lower end side is vertically rotatable around a tilting upper end rotating portion 10a, and a hydraulic cylinder 11 provided between the machine body 2 and the side frames 8 and 8 is provided.
The vertical movement adjustment, that is, the adjustment of the digging depth is performed by the expansion and contraction operation of No. 1, and the fold conveyor 10 and the digging conveyor 10 can be folded from the middle of the side frames 8 and 8 toward the fuselage side. The folding and unfolding operations are performed by the hydraulic cylinder 12. The moving speed of the digging conveyor 10 can be adjusted steplessly or stepwise. In addition, the ridge-following device 14 that follows the brackets 13 and 13 projecting forward from the left and right side frames 8 and 8 along with the movement of the machine body along the length direction of the ridge to be harvested.
Is provided.

The ridge-following device 14 is provided with a pair of wheels 15 and 15 which are in contact with the inclined shoulders of the ridge to be harvested so as to face each other. It is supported so that it can be adjusted up and down and that it can be adjusted to move left and right by means of slide mechanisms 17, 17. The pair of wheels 15 and 15 have a camber angle. In the side frame 8 of the above-mentioned digging conveyor device 6,
A power connection / disconnection mechanism (not shown) is provided in the vicinity of the folded portion. An auxiliary worker boarding device 18 on which an auxiliary worker who carries out pretreatment of the harvested and conveyed crops is boarded is arranged beside the digging conveyor device 6. This auxiliary worker boarding device 18 includes step 18a, vertical adjustment,
It is composed of a rotatable seat 18b and a handrail 18c, and can be removed when unnecessary.

A sorting conveyer device comprising a rod (bar) conveyor for carrying out a sorting operation while placing and transferring the harvested product by bringing the transporting start end of the digging conveyor 10 below the transporting end of the digging conveyor. 19 are provided. An operator boarding device 20 on which a worker performing the operation of the control unit 7 and the sorting work is mounted on one side in the transfer direction of the sorting conveyor device 19 and a sorting worker on which the worker performing the sorting work is mounted on the other side. A boarding device 21 is provided. A clutch lever 22 that can be operated in conjunction with the traveling clutch lever provided in the control section 7 and the clutch lever of the digging conveyor 10 is provided near the sorting operator boarding device 21.
The both boarding devices 20 and 21 are respectively connected to the step 20.
a, 21a and seats 20b, 21b which are vertically adjustable and rotatable
It is composed of and. Further, handrails 23, 23 also serving as strength members of the machine body 2 are provided at the front positions of the two boarding devices 20, 21 facing the sorting conveyor device 19.

The sorting conveyor device 19 is a rod (bar).
It can be easily replaced with a plurality of other types other than the conveyor, which have different sorting modes. Also, the sorting conveyor device 19 is
As shown in FIGS. 1 to 3, when the foreign material A is caught between the digging conveyor 10 and the sorting conveyor 19 and an overload occurs, the transport start end portion 19a of the sorting conveyor 19 moves downward. It is configured.

That is, in FIG. 1, the transfer start end 19a of the selection conveyor 19 is rotated around the transfer end 19b to move downward, and in FIG. 2, the selection conveyor 19 is selected. 19 is supported by the left and right frames 19c, and is rotated around a shaft 19d of the frame 19c to move downward. Further, in FIG. 3, the intermediate roll 19e of the selection conveyor 19 is rotated. It moves and moves downward. The transport start end portion 19a of each sorting conveyor 19 has the elastic cylinder 1 shown in FIGS. 4 and 5.
It is elastically supported by 9f or the coil spring 19g.
A space 24 is formed below each of the sorting conveyor devices 19. Although not shown, the sorting conveyor device 1
A sieve line is provided below the terminal portion of 9.

At the rear end of the machine body behind the sorting conveyor device 19, a harvested product loading device 25 for loading harvested products is arranged. The harvesting device 25 is a loading platform that can mount a large number of containers containing harvested products, and can be adjusted up and down by changing the front end of the machine, and can be rotated around the front end. It is movable and can be displaced between a use state in which it is projected to the rear of the machine and a stored state in which it is erected on the machine side. Although not shown, both the boarding devices 20,
Providing an overhanging portion at steps 20a and 21a of 21,
You may make it mount the container which accommodates a harvest.

A straddle frame 26 is provided so as to extend above the handrails 23, 23 so as to extend over the sorting conveyor device 19 and the excavation conveyor 10, and a light 27 for illuminating the front and rear directions of the machine body is attached to the straddle frame 26. Has been. In addition, the parasol 30 is tilted in all the front, rear, left, and right directions via the parasol mounting seat 29 at the tip of the support arm 28 having the base end fixed to the straddle frame 26 and extending rearward.
It is fixedly supported. The parasol 30 shades the worker sitting on the worker boarding device 20 and the sorting worker boarding device 21, and a fan or a radio may be attached to the column of the parasol 30.

The transmission 5 that receives power from the engine 4 to change gears is equipped with a hydraulic continuously variable transmission (HST) (not shown) for continuously changing gears. To change gears, connect power transmission via side clutch and differential device,
The crawlers 3 and 3 are disengaged so that the crawlers 3 and 3 are continuously and stepwise changed. A brake device is also provided in association with the differential device. Then, when the steering lever is largely operated, the side clutch, the differential mechanism, and the brake are actuated so as to turn the aircraft into a super-complex turn.

Further, as described above, the digging conveyor 10 is
The movement speed can be adjusted continuously and stepwise, and by combining this with stepless or stepped traveling of the crawlers 3 and 3, the excavation work speed can be freely set. When the potato harvester 1 is not used, the digging conveyor device 6 rotates the digging conveyor device 6 as a whole around the rotating portion 10a, or folds the tip side portion as shown in FIG. It can be transported by rotating it to the side of the aircraft with a stowed state, shortening the longitudinal length of the aircraft and loading it on the loading platform of a light truck.
In addition, it can be stored in a warehouse, etc., and the headland can be turned in a small area.

Next, the operation of the potato harvester 1 configured as described above will be described. The potato harvester 1 harvests the wheels 15 and 15 of the ridge-following device 14 when harvesting root vegetables such as sweet potato, potato, onion, beet, taro, konjac potato, ginseng, and lacquer root from the field. The digging conveyor device 6 is rolled on both inclined shoulders of the target ridge.
The excavation blade 9 is vertically moved by the hydraulic cylinder 11 to adjust the excavation depth, the harvested product is excavated by the excavation blade 9 by the forward movement of the machine body, and this is conveyed with the soil by the excavation conveyor 10. Lift up diagonally above the aircraft. During this transportation, soil falls from between the link rods, and a worker sitting on the auxiliary worker boarding device 18 performs a pretreatment to remove vines, foliage, large soil blocks, stones, etc. other than root vegetables.

Only the root vegetables in the harvested product discharged from the transport end of the digging conveyor 10 onto the selection conveyor device 19 are handrails 23 by the operator sitting on the operator boarding device 20 and the selecting operator boarding device 21. , 23, and is stored in a container (container) mounted on the harvested product mounting device 25. The soil and foreign matters remaining on the sorting conveyor device 19 are dropped from the end of the transportation to the field through the space 24. Then, when the foreign material A is caught between the digging conveyor 10 and the selection conveyor 19 and an overload occurs, the elastic cylinder 19f or the coil spring 19g contracts, and the conveyance start end portion 19a of the selection conveyor 19 moves downward. However, damage to the digging conveyor 10 and the sorting conveyor 19 is avoided.
Further, even when the operator's hand is sandwiched between the digging conveyor 10 and the selection conveyor 19, injury is avoided.

Here, the potato harvester 1 has an engine 4, a transmission 5, and an operating portion (operating system) 7 arranged in front of the crawlers (traveling devices) 3 and a worker boarding device in the rear thereof. By disposing 20, the sorting operator boarding device 21 and the harvesting device 25, the front-rear and left-right balance of the machine body 2 is improved, and workability and work accuracy are improved.
The runnability, turning performance, and stability of the machine body 2 are improved.
Further, since the traveling device (crawler 3, 3) is configured to be capable of super-complex turning, and the transmission 5 is arranged in the central portion on the front side of the machine body, when the machine body 2 makes a super-communicate course, either of the left and right sides is achieved. You can also turn in a well-balanced direction. Therefore, the crawlers 3 and 3 do not greatly scrape the soil in the field.

In front of the digging conveyor device 6, there is provided a ridge follower device 14 for following the movement of the machine body along the length direction of the ridge to be harvested, and a pair of wheels rolling on both inclined shoulders of the ridge to be harvested. 15 are provided so as to face each other and are supported so as to be vertically adjustable and horizontally adjustable with respect to the digging conveyor device 6, so that both wheels 15 accurately follow the ridges to be harvested to automatically steer the machine body and dig it. Automatic digging / conveyance is performed by the take-up conveyor device 6. Therefore, the worker sitting on the worker boarding device 20 can spend most of the time on the sorting work except for the operation of the machine body steering operation at the ridge end of the ridge to be harvested. When the headland is turned at the end of the field, the excavation conveyor device 6 is folded by the hydraulic cylinder 12 so that the crawlers 3 and 3 can turn at a small turning radius as well as the super-field turning.

In addition to the potato harvesting work, the potato harvesting machine 1 of the present invention can be used not only for the harvest of empty cans, empty bottles, wood chips, etc., which are left on the coast or dunes. Can be done. In that case, the ridge-following device 14 may be removed or it may be made to function as a device for adjusting the digging depth of the digging blade 9.

[0023]

As described above, according to the safety device for an agricultural product harvesting machine of the present invention, the transportation start end of the sorting conveyor is disposed below the transportation end of the digging conveyor so that the digging is performed. When a foreign matter is caught between the conveyor and the sorting conveyor and an overload occurs, the transport start end of the sorting conveyor is moved downward, so the overload caused by the foreign matter is automatically caught. This eliminates damage to both conveyors. Further, even when the operator's hand is caught between the digging conveyor and the selecting conveyor, the injury is avoided and a serious accident does not occur.

[Brief description of drawings]

FIG. 1 is a side view of a safety device according to the present invention.

FIG. 2 is a side view of a second embodiment of the safety device according to the present invention.

FIG. 3 is a side view of a third embodiment of the safety device according to the present invention.

FIG. 4 is a side view of an elastic cylinder.

FIG. 5 is a side view of a coil spring.

FIG. 6 is a plan view of the entire potato harvester of one embodiment of the present invention.

FIG. 7 is a side view of the entire potato harvester.

FIG. 8 is a rear view of the same.

FIG. 9 is a perspective view of the same.

[Explanation of symbols]

1 potato harvester 2 machine body 3 crawler 4 engine 5 transmission 6 excavation conveyor device 7 control part 8 side frame (frame) 9 excavation blade 10 excavation conveyor 10a rotating part 11 hydraulic pressure for vertical movement adjustment of excavation conveyor device Cylinder 12 Hydraulic cylinder for folding the digging conveyor device 13 Bracket 14 Ridge tracking device 15 Wheel 16 Vertical adjustment mechanism 17 Slide mechanism 18 Auxiliary operator boarding device 18a Step 18b
Seat 19 Sorting conveyor device 19a Transport start end 19b
Transport end part 19c Frame 19d Shaft 19e
Intermediate roll 19f Elastic cylinder 19g Coil spring 20 Worker boarding device 20a step 20b Seat 21 Sorting worker boarding device 21a Step 21b
Seat 22 Clutch lever 23 Handrail that doubles as a strength member of the airframe 24 Space 25 Harvesting device 26 Crossing frame 27 Light 28 Support arm 29 Parasol mounting seat 30 Parasol A Foreign matter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Kakimi 684 Nakamata, Okayama-shi, Okayama Kobashi Industrial Co., Ltd. Inventor Koji Morikawa 684 Nakamata, Okayama City, Okayama Prefecture Kobashi Kogyo Co., Ltd.

Claims (3)

[Claims] 1. A self-propelled agricultural product provided with a digging conveyor for digging and transporting agricultural products vegetated in the field and a sorting conveyor for sorting, from the front to the rear of the center of the airframe between the left and right traveling devices. In the harvester, when the transport start end of the sorting conveyor is placed below the transport end of the digging conveyor so that the foreign matter is caught between the digging conveyor and the sorting conveyor and overload occurs. In addition, a safety device for an agricultural product harvester, characterized in that the transport start end of the sorting conveyor is configured to move downward. 2. When the foreign matter is caught between the digging conveyor and the sorting conveyor and an overload occurs, the transportation start end portion of the sorting conveyor rotates about the transportation end side as a whole. 2. The safety device for the agricultural product harvester according to claim 1, wherein the safety device is moved downward by. 3. When a foreign substance is caught between the digging conveyor and the sorting conveyor and an overload occurs, the transport start end of the sorting conveyor moves downward by rotating from the middle of the sorting conveyor. The safety device for an agricultural product harvester according to claim 1, wherein the safety device is provided.