JP2849786B2 - 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 mainly for harvesting root vegetables such as sweet potatoes and potatoes. The present invention relates to an agricultural harvester provided with an auxiliary work device for performing auxiliary work manually.

[0002]

2. Description of the Related Art Conventionally, as an agricultural product harvester for harvesting root vegetables such as sweet potatoes and potatoes, a digging blade for digging agricultural products vegetated in a field from the front to the rear in the center in the width direction of the body, and a digging blade. 2. Description of the Related Art There is known a device provided with a digging conveyor for transporting agricultural products dug by a cutting blade backward. Then, the present applicant dug and conveys the potatoes and fine roots (beard roots) from the potato stalks when they are dug and conveyed by a digging blade at a position on the way of conveyance of the digging conveyor. It is proposed to provide an auxiliary worker's seat for performing the so-called "Karabashi work".
In addition, the separating work is generally performed on a sorting conveyor provided continuously with the excavating conveyor.

[0003]

By the way, in a sweet potato excavated from a field by a digging blade, a plurality of potatoes and fine roots are connected by a potato stalk from which a vine has been removed, and all of them are together with the surrounding soil. When the potatoes are dug up and transported on a digging conveyor, the potatoes can be sorted and stored without being damaged. However, when the soil is dry and is placed on the excavating conveyor and falls from the gap between the conveyors, and the potatoes are transported from the excavating conveyor to the sorting conveyor in a naked state, the potatoes are damaged during the transport process. If the potatoes are on the digging conveyor and some of the potatoes or fine roots remain in the field, the potatoes on the digging conveyor are pulled by some of the potatoes or fine roots in the field. There was a problem that it was rubbed with the conveyor and was scratched.

[0004] In some production areas, when sweet potatoes are treated with vines before harvesting, potato stalks are sometimes lifted out of the field together with the vines to perform the work of spreading the potatoes. In this case, however, heavy labor is required. In addition, there is a problem that work efficiency is deteriorated. Further, there is another problem that whether or not the tillering work is performed has a great effect on the work efficiency of the harvester. The present invention has been made to solve the above problems.

[0005]

In order to achieve the above object, the present invention provides: A digging blade 9 for digging agricultural products vegetated in a field from the front to the rear in the center in the width direction of the body 2, and a digging conveyor 10 for transporting the agricultural products dug by the digging blade 9 backward. In a self-propelled agricultural product harvester provided with a digging blade 9 at the front end of the digging conveyor 10
And an auxiliary work device 31 on which a worker who performs auxiliary work by manpower on agricultural products dug out of the field by the excavating blade 9 and floats on the ground is provided.

B. The auxiliary work device 31 includes a seat 32 in which a worker who performs auxiliary work at the center of the excavating conveyor 10 in the width direction sits backward or forward with respect to the traveling direction of the body 2.
And step 33 for placing the feet of an operator provided on both sides of the digging conveyor 10,
A handrail 34 is provided so as to straddle the width direction of the machine, and a handrail 34 for grasping an operator, and a traveling and excavating conveyor 1 for the body 2 in an emergency.
Safety switch 3 to stop driving, lifting, folding, etc. of 0
C.5. A safety switch 35 is provided on the handrail 34 to stop the engine 4 of the harvester in an emergency. The seat 32 is provided with a sensor 37 which operates by sensing the weight when an operator is seated, so that the excavating conveyor 10 cannot be moved up and down and folded during the operation of the sensor 37. Each is characterized.

[0007]

According to the above arrangement, the present invention operates as follows. . At the front end of the digging conveyer 10, an auxiliary work in which a worker who assists manually on agricultural products dug from a field and floats on the ground by the digging blade 9 is mounted at a position facing the digging blade 9. By providing the device 31,
The agricultural product dug by the digging blade 9 is subjected to an auxiliary work by human power, so that when the sweet potato is harvested, the tillering operation can be performed, and the efficient harvesting operation can be performed without damaging the potato. . The auxiliary working device 31 is composed of a seat 32 in which the operator sits backward or forward with respect to the traveling direction of the machine body 2, a step 33 on which a foot is placed, a handrail 34, and a safety switch 35, so that when harvesting sweet potatoes, Work such as unraveling work can be performed easily and safely.

[0008] A safety switch 35 is provided on the handrail 34 to stop the engine 4 of the harvester in an emergency, so that when a worker sitting on the seat 32 and working feels danger, the safety switch 35 must be pressed. The operation of the harvester stops, and safety is ensured. . The seat 32 is provided with a sensor 37 that operates by sensing the weight when the worker is seated. During the operation of the sensor 37, the excavating conveyor 10 cannot be moved up and down and folded. The worker who works while sitting at the can safely continue the work.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 4, reference numeral 1 denotes a potato harvester. The potato harvester 1 is equipped with crawlers 3, 3 that form a left-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 center 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 distal 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. An excavating conveyor 10 is wound around, and a lower inclined side is rotatable up and down around a rotating portion 10a at an upper end of the excavating conveyor.
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 follower 14 is provided with a pair of wheels 15, 15 which are in contact with the inclined shoulders of the ridge to be harvested, facing each other. Up and down adjustment is possible, and the support bar 17a is supported by slide mechanisms 17, 17 so as to be able to adjust left and right. Also, a pair of wheels 15, 1
5 has a camber angle. The side frame 8 of the excavating conveyor device 6 is provided with a power connecting / disconnecting mechanism (not shown) near the folded portion thereof. Digging conveyor 6
The auxiliary worker boarding device 18 on which an auxiliary worker who pre-processes the excavated and conveyed crops is mounted. The auxiliary worker boarding device 18 includes a step 18a, a vertically adjustable and rotatable seat 18b, and a handrail 1
8c, and can be removed when unnecessary.

At the position where agricultural products (for example, sweet potatoes) are dug from the field by the excavating blade 9, an auxiliary work device 31 for performing auxiliary work by human power on the dug agricultural products is provided. The auxiliary work device 31 includes a seat 32 attached to the support bar 17a so that the worker performing the auxiliary work sits backward with respect to the traveling direction of the machine body, and steps 33, 33 on which the worker capable of adjusting the forward and backward movement puts his or her feet.
And a safety switch 35 for stopping the running of the machine, the driving of the excavating conveyor 10, the lifting and lowering by the hydraulic cylinder 11, the folding by the hydraulic cylinder 12, and the like in an emergency. The auxiliary working device 31 may be configured such that the seat 32 is provided to face forward with respect to the traveling direction of the machine body, and corresponding steps, handrails and safety switches are provided.

An emergency switch may be provided on the handrail 34 to stop the engine 4 of the harvester in an emergency. Further, as shown in FIG. 5, the seat 32 is pivotally connected to the support bar 17a at the front portion thereof.
And a sensing switch 37 which is rotatably pivoted through and supports the rear portion by a coil spring 36, and the coil spring 36 is compressed by the weight when the worker is seated to sense the presence of the worker. During operation of the sensing switch 37, the excavating conveyor 10 may not be moved up and down by the hydraulic cylinder 11 or folded by the hydraulic cylinder 12.

At the rear part of the fuselage behind the excavating conveyor device 6, a sorting conveyor device 19 for carrying out a sorting operation while placing and transferring the harvested material is 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 steps 20a and 21
a and up and down, rotatable seats 20b and 21b. 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 can be easily exchanged with a plurality of other types having different sorting forms as required. In this embodiment, a rod (bar) conveyor type is mounted. In addition, a flat belt type, a rope conveyor type in which a number of short horizontal bars are fixed to every other rope at predetermined intervals, and a number of tapered rollers are arranged side by side in the width direction with the front side being thick. There is a taper roller type in which a roller is rotated, and the like, and in addition to these, it can be replaced with a sorting conveyor having a different sorting form. A space 24 is formed below the sorting conveyor 19. Although not shown, a sieve line is provided below the end of the sorting conveyor device 19.

At the rear end of the fuselage behind the sorting conveyor 19, a crop mounting device 25 for mounting a container for storing the crop is provided. This crop loading device 25
Is a loading platform that can hold a large number of containers containing harvested products, and can be adjusted up and down by changing the front end of the aircraft, and it can be rotated around the front end,
It can be displaced between a use state that protrudes to the rear of the fuselage and a stored state that stands on the fuselage side. Although not shown, overhangs may be provided at the steps 20a and 21a of the boarding devices 20 and 21 so that containers for storing harvested products can be placed.

A straddling frame 26 is provided to extend over the sorting conveyor device 19 and the digging conveyor 10 so as to extend the handrails 23, 23. Lights 27 illuminating the front and rear directions of the 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 about the rotating portion 10a, or 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 taro harvester 1 configured as described above will be described. When harvesting root vegetables such as sweet potatoes from a field, for example, the potato harvester 1 makes the wheels 15, 15 of the ridge following device 14 roll and contact with the inclined both shoulders of the ridge to be harvested, and the excavating conveyor device. 6 digging blades 9
Is adjusted up and down by a hydraulic cylinder 11 to adjust the digging depth, and the crop is digged by the digging blade 9 by the forward movement of the machine body.
The worker sitting on the seat 32 of the vehicle carries out the work of unraveling, and lifts the machine obliquely upward while transporting it along with the soil by the excavating conveyor 10.

The crop discharged from the transporting end of the excavating conveyor 10 onto the sorting conveyor 19 is transferred to the worker boarding device 2.
0 and the operator sitting on the sorting operator boarding device 21,
The root crops in the harvested products are sorted by hand and stored in a container mounted on the crop mounting device 25.
Also, small contaminants and soil left on the sorting conveyor 19 are:
It is discharged from the transport end and falls into the field through the space 24.

Here, the potato harvester 1 is provided with an engine 4, a transmission 5, an operation unit (operation system) 7, and an auxiliary work device 31 in front of crawlers (traveling devices) 3, 3, and a rear side. By disposing the operator boarding device 20, the sorting operator boarding device 21, and the crop mounting device 25 in the vehicle, the front-rear, left-right balance of the body 2 is improved, workability and work accuracy are improved, and The running performance, turning performance, and stability have been improved. In addition, the traveling device (crawler 3, 3) is configured to be able to make a pivot turn, and the transmission 5 is disposed at the center of the front side of the fuselage.
Can make a well-balanced turn in either left or right direction when turning. Therefore, the crawlers 3 and 3 do not greatly scrape the soil of the field.

In front of the digging conveyor device 6, the seat 3
2, steps 33, 33, handrail 34, safety switch 3
Since the auxiliary work device 31 composed of 5 or the like is provided, the tillering operation can be performed easily and safely at the time of sweet potato harvesting, and the efficient harvesting operation can be performed without damaging the potatoes.
Also, when an emergency switch is provided on the handrail, the engine of the harvester can be stopped in an emergency, and the worker sitting on the seat and working can work safely. Further, when a sensor is provided on the seat to operate by sensing the weight when the worker sits down, the excavating conveyor is automatically prevented from going up and down and folded, and the worker can continue working safely. I can do it.

A ridge following device 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. The wheels 15 are opposed to each other and supported so as to be vertically adjustable and left and right 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 aircraft. Automatic excavation / transportation by the excavation 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. When the headland turning is performed at the field end, the excavating conveyor device 6 can be folded with the hydraulic cylinder 12 to turn 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 empty cans, empty bottles, wood chips, etc., for example, on the coast or in dunes. Can be done. At that time, the ridge following device 14 and the auxiliary working device 31 are removed or the ridge following device 1 is removed.
What is necessary is just to make 4 function as a digging depth adjustment device of the digging blade 9.

[0026]

As described above, the agricultural product harvester of the present invention has the following effects. . At the front end of the digging conveyer 10, an auxiliary work in which a worker who assists manually on agricultural products dug from a field and floats on the ground by the digging blade 9 is mounted at a position facing the digging blade 9. Since the apparatus 31 is provided, for example, at the time of sweet potato harvesting, the tillering operation can be performed before the sweet potatoes are conveyed by the excavating conveyor 10, and an efficient harvesting operation can be performed without damaging the potatoes.

[0027] The auxiliary working device 31 is provided at a central portion in the width direction of the digging conveyor 10, a seat 32 on which an operator performing the auxiliary work sits backward or forward with respect to the traveling direction of the machine body 2, and is provided to protrude on both sides of the digging conveyor 10. Step 33 for placing the feet of the worker, and a handrail 3 provided so as to straddle the width direction of the digging conveyor 10 and grasping the worker.
4 and a safety switch 35 for stopping traveling of the body 2, driving of the excavating conveyor 10, elevating, folding, and the like in an emergency.
Therefore, operations such as thorning when harvesting sweet potatoes can be performed easily and safely.

[0028] The safety switch 35 is provided on the handrail 34 to stop the engine 4 of the harvester in an emergency, so that when the worker sitting on the seat 32 and working feels danger, the safety switch 35 is pressed. As a result, the operation of the harvester is stopped, and safety can be ensured. . The seat 32 is provided with a sensor 37 that operates by sensing the weight when the worker is seated. During the operation of the sensor 37, the excavating conveyor 10 cannot be moved up and down and folded. The worker who works while sitting at the can safely continue the work.

[0029]

[Brief description of the drawings]

FIG. 1 is a plan view of an entire potato harvester showing an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a perspective view of the same.

FIG. 5 is a side view showing another embodiment of the seat of the auxiliary working device.

[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 a digging conveyor device 13 Bracket 14 Ridge following device 15 Wheel 16 Vertical adjustment mechanism 17 Slide mechanism 17a Support bar 18 Auxiliary worker boarding device 18a Step 18b
Seat 19 Sorting conveyor device 20 Operator boarding device 20a Step 20b Seat 21 Sorting operator boarding device 21a Step 21b
Seat 22 Clutch lever 23 Handrail also serving as a strength member of the body 24 Space 25 Harvester mounting device 26 Crossing frame 27 Light 28 Support arm 29 Parasol mounting seat 30 Parasol 31 Auxiliary work device 32 Seat 33 Step 34 Handrail 35 Safety switch 36 Coil spring 37 Sensing switch

Claims (4)

(57) [Claims] 1. A digging blade (9) for digging agricultural products vegetated in a field from the front to the rear in a width direction central portion of an airframe (2), and an agricultural product digged by the digging blade (9). A self-propelled agricultural harvester comprising a digging conveyor (10) for transporting the garment backwards , wherein a digging blade is provided at a front end of the digging conveyor (10).
(9) and in a position opposed to drilling up edge (9) auxiliary working apparatus operator who performs the auxiliary operation is riding by human for the agricultural products floating on the ground and raised excavated from the field by (3
An agricultural product harvester characterized in that 1) is provided. 2. The excavating device according to claim 1, wherein
A seat (32) in which an operator performing auxiliary work is positioned at the center in the width direction of the conveyor (10), facing rearward or forward with respect to the traveling direction of the machine (2), and protruding from both sides of the digging conveyor (10).
(33) for placing the feet of the worker provided
And straddle the width direction of the digging conveyor (10)
It is provided with a handrail (34) which is provided and which can be grasped by an operator, and a safety switch (35) which stops running of the body (2), driving of the digging conveyor (10), lifting / lowering, folding, etc. in an emergency. The agricultural product harvester according to claim 1, characterized in that: 3. A safety switch (3 ) is connected to the handrail (34).
The agricultural product harvester according to claim 1 or 2, wherein 5) is provided to stop an engine (4) of the harvester in an emergency. 4. A sensor (37) is provided on the seat (32) for sensing the weight when an operator sits on the seat (37) .
During the operation of this sensor (37) , the excavating conveyor (1)
0) lifting of agricultural harvesting machine according to claim 1, 2 or 3, wherein the constructed so as not to fold.