JPH06276823A - Farm product harvester - Google Patents

Abstract

PURPOSE:To hold harvested crops without damaging the crop by providing a harvester with a container-supporting frame rotatable in longitudinal direction within a prescribed range on a container-mounting table to mount a container holding selected crops and supporting the supporting frame with a specific supporting apparatus. CONSTITUTION:A container-supporting frame 28 rotatable in longitudinal direction within a prescribed range on a container-mounting table 25 to mount a container holding selected crops is supported with a supporting apparatus 29. The supporting apparatus is provided with a light-load supporting member 29a and a heavy-load supporting member 29b and the supporting apparatus is surely actuated according to the weight of the harvested crops successively charged into the container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to, for example, sweet potato, potato,
The present invention relates to an agricultural product harvesting machine for harvesting root vegetables such as onions, beets, taros, konjac potatoes, ginseng roots, and lacquer roots from a field, and at the same time selects and stores them.

[0002]

2. Description of the Related Art Conventionally, as a crop harvester for harvesting root vegetables such as sweet potatoes, potatoes, konjac potatoes from the field, selecting and storing them, from the front to the rear of the center of the machine between the left and right traveling devices, A digging conveyor that digs and conveys agricultural products vegetated in the field, a sorting conveyor that sorts the harvested products that are transported by the digging conveyor, and a harvested product that is sorted by the sorting conveyor is stored in a container and installed. A self-propelled type equipped with a container mounting base is proposed.

[0003]

The main purpose of the container mounting base of the agricultural product harvesting machine is to mount an empty container and a container containing the harvested product. In addition, a container in which a harvested product is being accommodated on a container loading platform is also proposed in which the harvested product is sequentially tilted according to the storage amount so as not to damage the harvested product, but its function is not sufficient. In addition, there is a problem that the structure is complicated. The present invention is intended to solve the above problems.

[0004]

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. A self-propelled conveyor equipped with a digging conveyor that performs, a sorting conveyor that sorts the harvest conveyed by the digging conveyor, and a container loading platform that accommodates and mounts the harvest sorted by the sorting conveyor in a container. In the agricultural product harvester, the container mounting table has a container support frame on which the container is placed and which can be rotated in a front-back direction within a predetermined range. The container support frame includes a light load support member and a heavy load support member. It should be supported by a support device consisting of, and supported by a light load support member up to a certain weight range according to the weight of the harvested products sequentially stored in the container, and thereafter supported by both support members. Configured to

(2) The light-load supporting member and the heavy-load supporting member of the supporting device are constructed by stacking springs having different spring constants, (3) the container supporting frame is conveyed by a container to a sorting conveyor. Provided with horizontal holding means for turning the container from a position supporting the end diagonally to a position supporting substantially horizontally, and holding the container support frame at a position where the container is supported substantially horizontally by contraction of the supporting device. It is characterized by each.

[0006]

With the above construction, the agricultural product harvester of the present invention is
It has the following effects. The container mounting table has a container support frame on which a container is placed and which can be rotated in a predetermined range in the front-rear direction. The container support frame is supported by a support device including a light load support member and a heavy load support member. Depending on the weight of the harvested products that are sequentially accommodated in the container, they are supported by a light load support member up to a certain weight range, and thereafter supported by both support members. Depending on the weight, the support device works reliably and stores the harvest without damaging it. Also, its structure is simple.

Since the light-load supporting member and the heavy-load supporting member of the supporting device are configured by stacking springs having different spring constants, the supporting device has a simple structure and requires a small installation space. The container support frame can be rotated from a position where it is diagonally supported with the container facing the transfer end of the selection conveyor, to a position where it is supported substantially horizontally, and the container is supported at a position where it is supported substantially horizontally due to contraction of the support device. Since the horizontal holding means for holding the container support frame is provided, the container moves from an oblique position to a horizontal position according to the weight of the harvested products sequentially accommodated in the container to accommodate the harvested product without damaging the harvested product. At the position, the container containing the harvest can be taken out.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 5 to 7, reference numeral 1 denotes a potato harvester, and the potato harvester 1 is equipped with crawlers 3 and 3 which form a pair of left and right bodies and are capable of spin rotation. 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 4, 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.
Up and down adjustment is performed by the expansion and contraction operation of, that is, the adjustment of the digging depth is performed, and it can be folded from the middle of the side frames 8 and 8 to the fuselage side together with the digging conveyor 10. 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. Further, the brackets 13 and 13 projecting forward from the left and right side frames 8 and 8 are provided with a ridge following device 14 that follows the movement of the machine body along the length direction of the ridge to be harvested.

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. The side frame 8 of the excavation conveyor device 6 is provided with a power connecting / disconnecting mechanism (not shown) near the folding 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. The auxiliary worker boarding device 18 is composed of a step 18a, a vertically adjustable and rotatable seat 18b, and a handrail 18c, and can be removed when not needed.

A second conveyor 19 which is a rod (bar) conveyor type selection conveyor is disposed at a rear position of the machine body behind the digging conveyor device 6, and the second conveyor 19 is provided.
A rake-shaped transfer body 31 is provided at the end of the conveyance of, and is connected to a third conveyor 33 which is a rope conveyor type selection conveyor. Below the third conveyor 33, the small-sized container container 32a of the containers 32 placed on the container mounting table 25 is arranged as shown in FIGS. 6 and 1.

On one side of the second conveyor 19 in the transfer direction, an operator boarding device 20 on which an operator who operates the control section 7 and the sorting work is aboard, and a worker who carries out the sorting work on the other side are aboard. A sorting operator boarding device 21 is provided. A clutch lever 22 that can be operated in conjunction with the traveling clutch lever provided in the control unit 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 seats 2 that are vertically adjustable and rotatable with steps 20a and 21a, respectively.
It is composed of 0b and 21b. Further, handrails 23, 23 also serving as strength members of the machine body 2 are provided at front positions of the two boarding devices 20, 21 facing the sorting conveyor 19.

The selection conveyor 33 which is the third conveyor
Can be easily replaced with another type having a different selection form, if necessary, but the rope type conveyor 33 of this embodiment has
The pair of front and rear pulleys 35, 35 is pivotally supported, and the pulley 3
A large number of ropes 36 are wound between 5, 35 at predetermined intervals. For every other rope 36, 36 ...
A number of short horizontal bars are fixed at predetermined intervals. Also, of the ropes 36 that do not have a horizontal bar,
While being wound between the pulleys 35, 35, from the lower front part,
The tension roller 37 supported by the side frames 34, 34 applies tension to the ropes 36, thereby making the vertical intervals of the ropes 36 close to each other.

As shown in FIGS. 1 to 4, the container 32b for accommodating medium and large balls is placed on the container mounting table 25 facing the transfer end of the third conveyor 33 and rotated in a predetermined range in the front-rear direction. A movable container support frame 28 is provided.
The container support frame 28 is pivotally supported by a pair of left and right columns 38 that are erected on the container mount 25 via pins 28 a, and a support device 29 is provided between the container support frame 28 and the container mount 25. Has been. The support device 29 is a telescopic cylinder 3 including two cylindrical bodies slidably fitted and inserted.
0, a light load spring 29a which is a light load support member
And a heavy load spring 29b, which is a heavy load supporting member, are stacked. Further, the telescopic cylinder 30 is provided with a telescopic guide 30a, and the telescopic cylinder 30 is further contracted so that the container support frame 28 is moved to the container mounting table 25 and the support column 3.
The support 38 is provided on the column 38 for holding the container support frame 28 at that position when the container support frame 28 is in the overlapping state.

Then, as shown in FIGS. 1 and 6, the medium / large size container 32b is placed on the container support frame 28 in an oblique posture, and the containers 32b are sequentially housed in the container 32b from the transfer end of the third conveyor 33. A light load spring 29 having a small spring constant up to a certain weight range depending on the weight of the object.
It is supported by a, and thereafter, it is supported by both the light load spring 29a and the heavy load spring 29b having a larger spring constant. Also, the container support frame 2
8 can be rotated from a position in which the container 32b is obliquely supported with the container 32b facing the conveyance end of the third conveyor 33 to a position in which it is supported substantially horizontally, and the container 32b is made substantially horizontal by contraction of the support device 29. The container support frame 28 is held by the holder 30b at the supported position.

A plurality of containers 32 containing harvested products can be mounted on the container mounting table 25 provided behind the third conveyor 33, and the container supporting frame 28 is provided on the container mounting table 25 as described above. Left and right pair of struts 38
A container mounting table 39 for mounting an empty container 32c is provided on the top. In addition, the harvested product discharged from the transport end of the third conveyor 33 is
A rubber drip 40 is provided for guiding inside the large-sized container 32b so that the harvested product can be stored in the container 32b without damaging it. Although not shown, steps 20a and 21a of both the boarding devices 20 and 21 may be provided with overhanging portions to mount an empty container 32c for containing harvested products.

A straddle frame 26 is provided so as to extend above the handrails 23, 23 so as to straddle over the second conveyor 19 and the excavation conveyor 10. The straddle frame 2
A light 27 that illuminates the front and rear directions of the machine body is attached to the vehicle 6. Although not shown, a support arm may be fixed to the straddle frame 26, and a parasol may be supported at the tip of the support arm to shade the worker sitting on the operator boarding device 20 and the sorting operator boarding device 21. Further, a fan or radio may be attached to the pillar of the parasol.

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. When the steering lever is largely operated, the side clutch and the differential mechanism are operated to spin the aircraft.

As mentioned above, the digging conveyor 10 is
The moving speed can be adjusted continuously and stepwise, and by combining this with stepless or stepwise 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 entire digging conveyor device 6 around the rotating portion 10a or folds the tip side portion as shown in FIG. With it, you can rotate it to the side of the machine to store it, shorten the front and rear length of the machine and load it on the truck bed for transportation.
In addition, it can be stored in a warehouse or the like, and the headland can be turned in a small area.

Next, the operation of the potato harvester 1 constructed as described above will be described. The potato harvester 1, for example, when harvesting potatoes from the field, rolls the wheels 15 and 15 of the ridge-following device 14 onto both inclined shoulders of the ridge to be harvested, and the digging blade of the digging conveyor device 6 is used. 9 is adjusted up and down by the hydraulic cylinder 11 to adjust the digging depth, the harvest is digged by the digging blade 9 by the forward movement of the machine body, and this is conveyed diagonally upward with the soil conveyed by the digging conveyor 10. Lift up. 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.

The operator boarding device 20 and the sorting operator boarding device 2 so as to leave potatoes among the harvested products discharged onto the second conveyor 19 from the transport end of the digging conveyor 10.
The worker sitting at 1 sorts over the handrails 23, 23, conveys by moving the second conveyor 19, and is conveyed from the end of conveyance to the third conveyor 33 via the delivery body 31. In the third conveyor 33, small potatoes are dropped while the potatoes are transported while being supported by the ropes 36, 36 ... and the horizontal bar, and are stored in the small ball storage container 32a below.
The remaining medium and large-sized potatoes are accommodated via a rubber drop 40 in a medium and large-sized container 32 that is obliquely placed on the container support frame 28 in front of the transportation end thereof.

In the container 32 for accommodating medium and large balls placed on the container support frame 28, first, the light load spring 29a of the supporting device 29 is compressed according to the weight of the harvested products sequentially accommodated from the third conveyor 33. As a result, the telescopic cylinder 30 is contracted, and along with this, the container support frame 28 is rotated clockwise about the pin 28a in FIGS. 1 and 6, and the medium / large-lens container 32 is also rotated. When the weight of the harvested product in the medium / large-sized container 32 reaches a certain weight, the telescopic cylinder 30 comes into contact with the upper surface of the heavy load spring 29b, and thereafter, the light load spring 29a and the heavy load spring having a larger spring constant than this. It will be supported by both 29b. Then, when the container support frame 28 overlaps the container mounting table 25 and the support column 38 to support the container 32b substantially horizontally, the container support frame 28 is held by the holding body 30b.

At this time, the medium and large potatoes are almost full in the container 32b, the traveling of the aircraft is temporarily stopped, and one of the workers working on the boarding devices 20 and 21 puts the container 32b into the container 32b. The empty container 32c placed on the container placing table 39 is placed on the container support frame 28 by sliding it on the placing table 25 and moving it. Then, when the container support frame 28 is pulled so as to release the holding of the container support frame 28 by the holding body 30b, the elastic force of the light load spring 29a and the heavy load spring 29b of the support device 29 causes the container support frame 28 to move.
Rotates counterclockwise around the pin and empty container 32
c returns to the position to accommodate medium and large ball potatoes and resumes the harvesting work.

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, 3 and an operator boarding device in the rear thereof. By disposing 20, the sorting operator boarding device 21 and the container mounting table 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 (the crawlers 3, 3) is configured to be capable of spin turning, and the transmission 5 is arranged in the central portion on the front side of the machine body, the machine body 2 can be rotated in either left or right direction when the machine body 2 spins. You can turn in a balanced manner. 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 following 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 operator sitting on the operator boarding device 20 can spend most of his / her time on the sorting work, except for the machine 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 spin and can be turned with a small turning radius.

The potato harvester 1 of the present invention can be used not only for the potato harvesting work but also for the work of collecting abandoned empty cans, empty bottles, wood chips, etc., for example, on the coast or sand dunes. You can 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. In addition, the second conveyor 19, the transfer body 31, and the third sorting conveyor 33 are the potato harvester 1
However, the present invention can be used not only as a stationary sorter but also as a stationary sorter.

[0027]

As described above, according to the agricultural product harvesting machine of the present invention, the following effects can be obtained. The container mounting table has a container support frame on which a container is placed and which can be rotated in a predetermined range in the front-rear direction. The container support frame is supported by a support device including a light load support member and a heavy load support member. Depending on the weight of the harvest, which is sequentially accommodated in the container, it is supported by a light load support member up to a certain weight range, and after that it is supported by both support members. The support device operates reliably according to the weight of the harvested products sequentially stored in the container, and the harvested products can be stored without being damaged. Moreover, the structure of the supporting device is simple, can be provided at a low cost, and is less likely to malfunction.

Since the light-load supporting member and the heavy-load supporting member of the supporting device are configured by superposing springs having different spring constants, the structure of the supporting device is extremely simple and the installation space can be reduced. The container support frame can be rotated from a position where it is diagonally supported with the container facing the transfer end of the selection conveyor, to a position where it is supported substantially horizontally, and the container is supported at a position where it is supported substantially horizontally due to contraction of the support device. Since the horizontal holding means for holding the container support frame is provided, the container can be moved from the oblique position to the horizontal position according to the weight of the harvested products sequentially stored in the container and the harvested products can be stored without damaging the harvested product. . Then, the container containing the harvested product can be taken out from the container support frame held by the horizontal holding means in the horizontal position.

[Brief description of drawings]

FIG. 1 is a side view of a container mounting base and a container supporting frame portion according to the present invention.

FIG. 2 is a side view of a container supporting frame supporting device.

FIG. 3 is a front view of a telescopic guide of the telescopic cylinder.

FIG. 4 is a side view of a holder of the container support frame.

FIG. 5 is a plan view of the whole legume harvester to which the present invention is applied.

FIG. 6 is a side view of the same.

FIG. 7 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 Second conveyor (bar type sorting conveyor) 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 aircraft 24 Space 25 Container mount 26 Crossing frame 27 Light 28 Container support frame 28a Pin 29 Support device 29a Light load spring 29b Heavy load support member Heavy load spring 30 Telescopic cylinder 30a Telescopic guide 30b Holding body 31 Delivery body 32 Container 32a Small ball storage container 32b
Medium / Large-sized container container 32c Empty container 33 Third conveyor (rope type selection conveyor) 34 Side frame 35 Pulley 36 Rope 37 Tension roller 38 Strut 39 Empty container platform 40 Rubber droop

Claims (3)

[Claims] 1. A digging conveyor for digging and transporting agricultural products vegetated in a field, and a harvested product transported by the digging conveyor 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 harvesting machine comprising a sorting conveyor and a container loading platform for accommodating and loading the harvested products sorted by the sorting conveyor in the container, the container loading platform is a front-back direction in which the container is placed. Has a container support frame that can be rotated within a predetermined range, and the container support frame is supported by a support device composed of a light load support member and a heavy load support member, and the weight of the harvested products sequentially stored in the container. According to the above, an agricultural product harvester characterized by being configured to be supported by a light load support member up to a certain weight range and thereafter supported by both support members. 2. The agricultural product harvesting machine according to claim 1, wherein the light load supporting member and the heavy load supporting member of the supporting device are constructed by superposing springs having different spring constants. 3. The container support frame is rotatable from a position where the container is supported diagonally with the container facing the conveyance end of the selection conveyor, to a position where it is supported substantially horizontally, and the container is moved substantially horizontally by contraction of the support device. 3. The agricultural product harvesting machine according to claim 1, further comprising horizontal holding means for holding the container supporting frame at a position supported by the container.