JP2796585B2 - Agricultural harvester safety equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an agricultural harvester mainly for harvesting root vegetables such as sweet potatoes, potatoes, onions, beets, taro, konjac potatoes, short ginseng, and raccoon. .

[0002]

2. Description of the Related Art Conventionally, agricultural harvesters for harvesting root crops include, for example, potato harvesters, beet harvesters, potato diggers, riding tractors or walking tractors equipped with a digging blade, and the digging blade. There are known those equipped with a digging conveyor device having a link rod chain conveyor connected to the rear, and those configured to vibrate the link rod chain conveyor.

[0003]

The above-mentioned potato harvesters, beet harvesters, potato diggers and the like are large like imported products and suitable for use in large-scale fields such as Hokkaido, but small-scale. It was not suitable for use in a natural field, and was a dedicated machine with poor versatility. Further, a tractor with a digging blade mounted on a riding tractor or a walking type tractor, a tractor with the digging conveyor device mounted thereon, a tractor that vibrates the link rod chain conveyor, and the like may be used in a small-scale field. Although it was developed to be able to do, only the root vegetables as described above are dug and released to the field, this dug root vegetables require a separate work process of picking up and sorting separately Work efficiency.

Accordingly, a self-propelled agricultural product provided with a digging conveyor for digging and transporting vegetation cultivated in a 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 transfer end of the excavating conveyor and the transfer start end of the sorting conveyor are provided close to each other, there is no foreign matter between the transfer end of the excavating conveyor and the transfer start end of the sorting conveyor. Clogging may cause overloading, or the operator may manually select the conveyor on both sides of the sorting conveyor, so put the hand between the transport end of the digging conveyor and the transport start end of the sorting conveyor. There was a danger to be. The present invention has been made to solve the above problems.

[0005]

In order to achieve the above object, the present invention relates to (1) digging and transporting agricultural products vegetated in a field from the front to the rear of the center of the body between left and right traveling devices. In a self-propelled agricultural harvester equipped with a digging conveyor for sorting and a sorting conveyor for sorting, the transport start end of the sorting conveyor is arranged close to the transport end of the digging conveyor, and digging is performed. When an overload occurs due to a foreign substance being caught between the conveyor and the sorting conveyor, the transport start end of the sorting conveyor is configured to move downward,

(2) When a foreign substance is caught between the excavating conveyor and the sorting conveyor and an overload occurs, the transport start end of the sorting conveyor rotates around the transport end side as a whole. (3) When a foreign object is caught between the excavating 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 by being moved downward by turning.

[0007]

According to the above construction, the safety device for an agricultural product harvester according to the present invention is arranged such that the transfer start end of the sorting conveyor is provided below the transfer end of the excavating conveyor so as to be close to the excavating conveyor and the sorting conveyor. When an overload occurs due to a foreign object being caught in the middle, the transport start end of the sorting conveyor moves downward and the overload is eliminated, so that damage to both conveyors is avoided. Further, even if the worker's hand is caught between the excavating conveyor and the sorting conveyor, no serious accident occurs.

[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. The potato harvester 1 is equipped with crawlers 3, 3 which form a left and right pair on a body 2 and enable super turning. The engine 4 is mounted on the body 2 in front of the crawlers 3 and 3, and a generator, a hydraulic pump, etc. (not shown) driven by the engine are mounted near the engine 4. A transmission 5 is provided between the crawlers 3 and 3 at a lower position on the front side of the body 2. Also, from the lower front of the fuselage 2 to the upper center of the fuselage through the transmission 5 to the upper part of the fuselage, a digging conveyor device 6 that excavates the vegetation cultivated in the field and conveys it rearward is provided. The conveyor device 6 has a front end portion pivotally supporting a base end portion so as to be vertically movable. A control unit 7 is provided on the other side of the body 2 opposite to the engine 4.

The digging conveyor device 6 has digging blades 9 attached to the front ends of left and right side frames (frames) 8, 8 and link rods between the side frames 8, 8, with slats provided at predetermined intervals. The excavating conveyor 10 is wound, and the lower end side of the slant is rotatable up and down around the turning part 10a at the upper end part of the excavator, and the hydraulic cylinder 11 provided between the body 2 and the side frames 8
The vertical movement adjustment, that is, the adjustment of the digging depth is performed by the expansion and contraction operation of the digging depth, and the digging conveyer 10 can be folded together with the digging conveyor 10 from the middle of the side frames 8, 8. The folding and unfolding operations are performed by the hydraulic cylinder 12. The digging conveyor 10 can adjust its moving speed steplessly or stepwise. Further, the brackets 13, 13 projecting forward from the left and right side frames 8, 8 are provided with ridge followers 14, which follow 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, 15 that are in contact with the inclined shoulders of the ridge to be harvested, facing each other. It is supported so that it can be adjusted up and down and can be adjusted to move left and right by slide mechanisms 17 and 17. The pair of wheels 15, 15 have a camber angle. The side frame 8 of the excavating conveyor device 6 includes:
Although not shown, a power connecting / disconnecting mechanism is provided near the folded portion. On the side of the excavating conveyor device 6, an auxiliary worker boarding device 18 on which an auxiliary worker who performs pre-processing of the harvested excavated and conveyed products is arranged. This auxiliary worker boarding device 18 includes a step 18a,
It is constituted by a rotatable seat 18b and a handrail 18c, and can be removed when unnecessary.

A sorting conveyor device comprising a rod (bar) conveyor for carrying out sorting work while placing and transferring harvested products, with the transport start end approaching below the transport end of the excavating conveyor 10. 19 are provided. On one side of the transfer direction of the sorting conveyor device 19, a worker boarding device 20 on which a worker performing a steering operation and a sorting operation of the control unit 7 is mounted, and a sorting worker on which a worker performing a sorting operation is mounted on the other side. A boarding device 21 is provided. A clutch lever 22 operable in conjunction with a traveling clutch lever provided on the control unit 7 and a clutch lever of the excavating conveyor 10 is provided near the sorting operator boarding device 21.
The two boarding devices 20 and 21 respectively perform step 20
a, 21a and seats 20b, 21b which can be adjusted up and down and rotated.
It is composed of Further, handrails 23, 23 also serving as strength members of the body 2 are provided at front positions of the boarding devices 20, 21 facing the sorting conveyor device 19.

The sorting conveyor device 19 includes a rod (bar).
It can be easily exchanged for a plurality of other types having different sorting forms other than the conveyor. In addition, the sorting conveyor device 19
As shown in FIGS. 1 to 3, when the foreign material A is caught between the excavating conveyor 10 and the sorting conveyor 19 and an overload occurs, the transport start end 19 a of the sorting conveyor 19 moves downward. It is configured.

That is, in FIG. 1, the transport start end 19a of the sorting conveyor 19 is rotated around the transport end 19b and moves downward, and in FIG. 19 is supported by left and right frames 19c, and pivots around a shaft 19d of the frame 19c to move downward. Further, in FIG. And move downward. The transport start end 19a of each sorting conveyor 19 is connected to the elastic cylinder 1 shown in FIGS.
It is elastically supported by 9f or a 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 end of 9.

At the rear end of the fuselage behind the sorting conveyor 19, a crop loading device 25 for loading crops is provided. The harvested product mounting device 25 is a loading platform capable of loading a large number of containers accommodating harvested products, and can be adjusted up and down by changing the front end of the body, and can rotate around the front end. It can be moved between a use state that protrudes rearward of the fuselage and a stored state that stands upright on the fuselage side. Although not shown, the two boarding devices 20,
An overhang is provided at steps 20a and 21a of 21,
A container for storing the harvested product may be placed.

A straddling frame 26 is provided to extend over the sorting conveyor device 19 and the excavating conveyor 10 so as to extend the handrails 23, 23. Lights 27 for illuminating the front and rear directions of the machine body are attached to the straddling frame 26. Have been. Further, a parasol 30 is tilted in all directions in the front, rear, right and left directions via a parasol mounting seat 29 at the tip of a support arm 28 having a base end fixed to the straddling frame 26 and extending rearward.
It is fixedly supported. The umbrella 30 is used to shade a 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 support of the parasol 30.

The transmission 5 which receives power from the engine 4 and shifts has a hydraulic continuously variable transmission (HST) (not shown) for continuously changing the speed. The transmission is connected through a side clutch and a differential device.
Then, the crawlers 3 and 3 are driven to change speed between stepless and stepped. Further, a brake device is provided in connection with the differential device. When the steering lever is largely operated, the side clutch, the differential mechanism, and the brake are actuated to turn the airframe in a super pivot.

As described above, the excavating conveyor 10
The speed of the movement can be adjusted steplessly and stepwise, and the excavation work speed can be freely set by combining this with the stepless or stepped running of the crawlers 3 and 3. When the potato harvester 1 is not in use, the excavating conveyor device 6 rotates the entire excavating conveyor device 6 around the rotating portion 10a, or folds the tip end portion as shown in FIG. Turn to the aircraft side to put it in the stowed state, shorten the front and rear length of the aircraft, load it on the light truck bed and carry it,
In addition, it can be stored in a warehouse or the like, and the headland turning can be performed in a small area.

Next, the operation of the thigh harvester 1 configured as described above will be described. For example, when harvesting root vegetables such as sweet potatoes, potatoes, onions, beets, taro, konjac potatoes, short root carrots, and lucky roots from the field, the potato harvester 1 harvests the wheels 15 and 15 of the ridge following device 14. Excavation conveyor device 6
The excavating blade 9 is moved up and down by a hydraulic cylinder 11 to adjust the excavating depth, and the harvest is dug by the excavating blade 9 by advancing the fuselage. Lift the aircraft diagonally upward. During this transportation, the soil falls from between the link rods, and a worker sitting on the auxiliary worker boarding device 18 performs a pretreatment for removing vines, foliage, large lumps, stones, and the like other than root vegetables.

Only the root crops of the harvest discharged from the transporting end of the excavating conveyor 10 onto the sorting conveyor device 19 are moved by the worker sitting on the worker boarding device 20 and the sorting worker boarding device 21 to the handrail 23. , 23 and accommodated in a container (container) mounted on the crop mounting device 25. The soil and contaminants remaining on the sorting conveyor 19 fall from the transport end through the space 24 to the field. When foreign matter A is caught between the excavating conveyor 10 and the sorting conveyor 19 and an overload occurs, the elastic cylinder 19f or the coil spring 19g contracts and the transport start end 19a of the sorting conveyor 19 moves downward. Thus, damage to the excavating conveyor 10 and the sorting conveyor 19 is avoided.
Also, in the case where an operator's hand is caught between the excavating conveyor 10 and the sorting conveyor 19, the injury is avoided.

Here, the potato harvester 1 has an engine 4, a transmission 5, and an operation unit (operation system) 7 disposed in front of crawlers (traveling devices) 3, 3, and an operator boarding device in the rear. 20, by disposing the sorting operator boarding device 21 and the crop loading device 25, the front-back, left-right balance of the body 2 is improved, and workability and work accuracy are improved.
The traveling performance, turning performance, and stability of the body 2 are improved.
Further, the traveling device (crawlers 3 and 3) is configured to be able to make a super pivot turn, and the transmission 5 is disposed in the front center portion of the fuselage. You can turn in a well-balanced direction. Therefore, the crawlers 3 and 3 do not greatly scrape the soil of the field.

A ridge follower 14 is provided in front of the excavating conveyor device 6 to follow the ridge along the length of the ridge to be harvested along with the movement of the fuselage, and a pair of wheels which are in rolling contact with the inclined shoulders of the ridge to be harvested. 15 are opposed to each other and supported so as to be vertically adjustable and horizontally adjustable with respect to the excavating conveyor device 6, so that both wheels 15 automatically follow the ridge to be harvested and automatically steer the fuselage. Automatic excavation / conveyance by the take-up conveyor device 6 is performed. 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 steering the machine at the ridge end of the ridge to be harvested. Further, when the headland turning is performed at the field end, the excavating conveyor device 6 is folded by the hydraulic cylinder 12 so that the turning can be performed with a small turning radius together with the super turning of the crawlers 3 and 3.

The potato harvester 1 of the present invention can be used not only for potato harvesting, but also for collecting unoccupied empty cans, empty bottles, wood chips, etc., for example, on the coast or in dunes. Can be done. In this case, the ridge following device 14 may be removed or the device may 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 harvester of the present invention, the transport start end of the sorting conveyor is disposed close to the transport end of the excavating conveyor, and the excavation is performed. When an overload occurs due to a foreign object being caught between the conveyor and the sorting conveyor, the transport start end of the sorting conveyor is moved downward, so that the overload caused by the foreign object is automatically Is eliminated and damage to both conveyors is avoided. Further, even when the operator's hand is caught between the excavating conveyor and the sorting conveyor, the injury is avoided and no serious accident occurs.

[Brief description of the 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 the elastic cylinder.

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

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

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

FIG. 8 is a rear view of the same.

FIG. 9 is a perspective view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Potato harvester 2 Body 3 Crawler 4 Engine 5 Transmission 6 Digging conveyor device 7 Operating part 8 Side frame (frame) 9 Digging blade 10 Digging conveyor 10a Rotating part 11 Hydraulic pressure for vertical movement adjustment of digging conveyor device Cylinder 12 Hydraulic cylinder for folding of excavating conveyor device 13 Bracket 14 Ridge following device 15 Wheel 16 Vertical adjustment mechanism 17 Slide mechanism 18 Auxiliary worker boarding device 18a Step 18b
Seat 19 Sorting conveyor device 19a Transfer start end 19b
Transfer end 19c Frame 19d Axis 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 also serving as a strength member of the body 24 Space 25 Harvesting device 26 Crossover frame 27 Light 28 Support arm 29 Parasol mounting seat 30 Parasol A Foreign matter

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiko Kakimi 684 Nakahane, Okayama City, Okayama Prefecture Inside Kobashi Kogyo Co., Ltd. (72) Inventor Minoru 684 684 Nakahone, Okayama City, Okayama Prefecture 72) Inventor Koji Morikawa 684 Nakafurune, Okayama-shi, Okayama Prefecture Inside of Kobashi Kogyo Co., Ltd. (56) References Shokai 55-48763 (JP, U) Shokai 58-50618 (JP, U) Shokai 56-136523 (JP, U) Shokai 58-187236 (JP, U) Shoko 56-32439 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01D 17/00 -33/14 B65G 15/00-23/00

Claims (3)

(57) [Claims] 1. A self-propelled agricultural product provided with a digging conveyor for digging and transporting agricultural products vegetated in a 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. In the harvester, when the transport start end of the sorting conveyor is arranged close to the transport end of the excavating conveyor, and foreign matter is caught between the excavating conveyor and the sorting conveyor, an overload occurs. A safety device for an agricultural product harvester, characterized in that the transport start end of the sorting conveyor moves downward. 2. When the foreign material is caught between the excavating conveyor and the sorting conveyor and an overload occurs, the transport start end of the sorting conveyor rotates around the transport end side as a whole. The safety device for an agricultural product harvester according to claim 1, wherein the safety device is moved downward. 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 configured as described above.