JP2673273B2 - Agriculture harvesting equipment - 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 apparatus for sandwiching agricultural products such as root vegetables with a harvesting belt composed of a pair of left and right endless belts and pulling them out of a field.

[0002]

2. Description of the Related Art Conventionally, there has been known an agricultural product harvesting device equipped with a harvesting belt consisting of a pair of left and right endless belts for sandwiching an agricultural tractor (traveling vehicle body) with an agricultural product vegetated in the field and pulling out from the field for harvesting. Has been. The pair of left and right endless belts are fixed, and the distance between the belts is adjusted by the elastic force of the belt itself, or one of the front ends is supported by an elastic body such as a spring so that it can swing. There was something to do by doing.

[0003]

In the former one of the above-mentioned conventional harvesting devices, since the harvesting operation is performed with the pair of left and right endless belts having a substantially constant interval, the difference in the size of the harvested agricultural products is large. If it is large, there is a problem that not only the harvesting work is not performed smoothly, but also the agricultural products and the harvest belt itself may be damaged. Further, in the latter case, there is a problem that not only the structure becomes complicated and the cost becomes high, but also the adaptability to the size of the harvested agricultural products is not sufficient. The present invention has been made to solve the above problems.

[0004]

In order to achieve the above object, the present invention provides a pair of left and right endless belts for sandwiching a root vegetable C vegetated in a field on a traveling vehicle body 1 and pulling it out from the field for harvesting. In the agricultural product harvesting device equipped with the harvest belts 10 and 11 consisting of
By driving the rear end side of the pair of left and right endless belts, the front end side is arranged as a free end so that the front end sides rotate inward with each other, and one front end side of the pair of endless belts is fixed, A stopper that pivotally mounts the tip end side rotating portion of the other belt to the tip end portion of a swing arm 14 whose base end portion is pivotally supported on the machine body side so as to be able to swing left and right, and limits the swing range of the swing arm 14. 16 is provided to support the swing side belt between the fixed side belt and the fixed side belt in a swingable manner within a predetermined range.

[0005]

With the above construction, the harvest belts 10 and 11
Are arranged so that the rear end side of each belt is rotated, and the front end side is a free end, and the front end side is rotated inwardly.One end side of a pair of endless belts is fixed, and the other end belt is rotated. Part is pivotally attached to the tip end of a swing arm 14 whose base end is pivotally supported on the machine body side so as to be able to swing left and right, and a stopper 16 for restricting the swing range of the swing arm 14 is provided. By supporting the swing-side belt between the belt and the swingable side within a predetermined range, the swing-side belt swings within a predetermined range with respect to the size of the agricultural product C to be harvested, and the fixed-side belt. ,
The two products are sandwiched by the rotating forces that rotate inward with each other and sandwiched, and a smooth harvesting operation is performed without damaging the produce C and the harvest belts 10 and 11 themselves.

[0006]

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 3, reference numeral 1 denotes a riding four-wheel type tractor (traveling vehicle body). Root vegetables are mounted on a rear portion of the tractor 1 via a three-point link mechanism 2 which can be moved up and down by a hydraulic device (not shown). The harvesting device 3 is mounted. The root crop harvesting device 3 is provided with a top link connecting portion 5 and lower link connecting portions 6 and 6 at the front end of the main body frame 4 so that the root link harvesting device 3 can be automatically attached to and detached from the three-point link mechanism 2. Further, an input shaft 7 protrudes forward from the main body frame 4, and the PT of the tractor 1 is attached to the input shaft 7.
Power transmission is performed from the O-axis.

At the front portion of the main body frame 4, a digging blade 8 and a resistance plate 9 projecting downward are provided so as to face each other with a predetermined interval in the width direction of the machine body. Then, on the outside of the digging blade 8, the harvesting belts 10 and 11 each having a pair of endless belts rotating opposite to each other with the starting end side being low and the ending end side being high, and having substantially the same length are provided at the rear end portion. The rotary shafts 10a, 1 that rotate by being transmitted with power by the universal transmission shaft 12.
It is driven to rotate by 1a, and is arranged such that the tip end side is a free end and the tip end sides rotate inward (in the arrow direction). The harvest belts 10 and 11 are fixed so that the belt 11 side does not move in the left-right direction, and the tip side of the belt 10 has a shaft 13 at one end on a belt support frame.
The shaft 15a of the free end pulley 15 is pivotally supported on the other end of the L-shaped swing arm 14 which is pivotally supported by the rotary shaft 10.
It is swingably supported to the left and right around a. Belt 10
As for the swing range of, the swing range of the swing arm 14 is set to the stopper 1
By being regulated by 6, it is regulated within a predetermined range. The facing surfaces of the harvesting belts 10 and 11 have a plurality of belt tensioning rollers 10b and 11b arranged in a staggered pattern.
Stretched by.

The harvest belts 10 and 11 are supported from below by support frames 17 and 18, and the connecting portions of the support frames 17 and 18 are pivotally supported by a shaft 19 to rotate in the front-rear direction. It is possible, and by the expansion and contraction operation of the hydraulic cylinder 20 provided between the belt support frame on the upper side of the support frame 18 and the main body frame 4, the support frames 17 and 18 rotate about the shaft 19 and the harvest belt 1
The starting ends of 0 and 11 are vertically adjusted with respect to the field scene so that the inclination angle can be adjusted. This hydraulic cylinder 20
The expansion / contraction operation is performed by the sensor 21 provided on the support frame 18. The sensor 21 is provided with a gauge wheel 22 that comes into contact with the surface of the field where the root vegetables C to be harvested are vegetated, and the vertical movement of the gauge wheel 22 is detected by the sensor 2.
The hydraulic cylinder 20 is controlled to expand and contract via a control unit (not shown).

Below the transportation end portions of the harvest belts 10 and 11, the root vegetables C vegetated in the field by the harvest belts 10 and 11 are extracted, harvested, transported, and dropped from the end portions of the harvested root vegetables HC. A lateral transfer conveyor 23 is provided which receives the laterally conveyed material and laterally conveys it to the field. In the present invention, the laterally moving conveyor 23 is driven intermittently so that the harvested root vegetables HC are collectively conveyed by a predetermined amount and discharged to the field. A fall prevention / guide cover 24 is provided around the conveying surface of the laterally moving conveyor 23 to prevent and guide the harvested root vegetables HC dropped from the harvest belts 10 and 11 from spilling from the conveyor surface. Here, the force (force to sandwich the root vegetable C) F acting from the shaft 15a (center) of the free end pulley 15 of the harvesting belt 10 to the harvesting belt 11 side has belt tensions T1 and T2.
When the distance between the center of the shaft 13 = the swing fulcrum and the center of the shaft 15a is A and the length from the center of the shaft 13 to the center of the shaft 15a is B, then F = A / B (T2 + T1).

In the root vegetable harvesting device 3 having such a structure, the top link connecting part 5 and the lower link connecting parts 6 and 6 are connected to the rear part of the tractor 1 via the three-point link mechanism 2 and mounted. Also, the PTO of the tractor 1 is
Power is transmitted from the shaft, and the rotary shafts 10a and 11a are rotated via the universal transmission shaft 12 to rotationally drive the harvesting belts 10 and 11 and also the lateral moving conveyor 23.
The digging blade 8 and the resistance plate 9 enter a predetermined depth in the field, and the gauge wheel 22 rolls in contact with the surface of the field. In this state, as shown in FIG. 2, the root vegetable harvesting device 3 is positioned along the row C of root vegetables to be harvested, and the tractor 1 travels with the tips of the harvest belts 10 and 11 facing the row C of root vegetables. Let Then, the side of the root vegetable C row is cut by the digging blade 8 so that the root vegetable C can be easily extracted, and a substantially predetermined position of the root vegetable C on the ground portion is sandwiched between the harvest belts 10 and 11, and the belt itself rotates. Then, the harvested root vegetables HC pulled out from the field by the forward traveling of the machine body are conveyed while being sandwiched between the harvesting belts 10 and 11 and sequentially lifted along the ascending slope. Then, it is dropped from the transport end of the harvesting belt 10 onto the lateral transfer conveyor 23. On the horizontal transfer conveyor 23, the harvested root vegetables HC are intermittently moved and collectively transported by a predetermined amount at a time, and from the end of the transportation, the harvested root vegetables HC are discharged to the field where the harvesting work has been completed at substantially constant intervals.

During the harvesting operation, in the harvesting belt 10, the free end pulley 15 and the belt are swingable within a range in which the swinging arm 14 rotates about the shaft 13 and contacts the stopper 16 as shown in FIG. In addition, since the opposite surfaces of the harvest belts 10 and 11 are stretched by a plurality of belt tensioning rollers 10b and 11b arranged in a staggered manner, it is possible to harvest depending on the size of the root vegetable C to be harvested. The belt 10 swings and is sandwiched between the belt 10 and the harvest belt 11, and the root vegetable C is extracted from the field and conveyed. Now, when the root vegetable C is small, its pulling force is small, so T2 + T1 → small,
Also, A / B becomes large, and when the root vegetable C is large, the pulling-out force is large, so T2 + T1 becomes large, and A / B becomes small. Also, the force F between the root vegetables C is F = A / B (T2 + T
Since it is 1), holding power that does not damage the root vegetable C can always be obtained by selecting an appropriate A / B.

On the other hand, while the gauge wheel 22 rotates, it moves up and down along the unevenness of the field scene, and the surface of the field and the harvest belt 1 are moved.
The distance from the lower end of 0 and 11 is detected, the variation of this distance is detected by the sensor 21, and is transmitted to the control portion to expand and contract the hydraulic cylinder 20. By the expansion and contraction operation of the hydraulic cylinder 20, the harvest belts 10 and 11 rotate in the front-rear direction around the shaft 19 via the support frames 17 and 18, and the tip end portions of the harvest belts 10 and 11 cause the root vegetables C to be harvested. By moving up and down following the unevenness of the vegetation field scene, the tips of the harvest belts 10 and 11 always maintain a substantially constant height with respect to the root vegetable C to be harvested. The work is performed with high accuracy by sandwiching and pulling out at a substantially constant height position.

Further, in the laterally moving conveyor 23, since the conveyor moves intermittently, the harvest belts 10 and 11 are
The harvested root vegetables HC that continuously drop on the laterally moving conveyor 23 from the end of the transportation are collectively conveyed in a predetermined amount, and are almost transferred from the end of the conveyor to the field where the harvesting work has been completed. It is released at almost regular intervals in the state of being collected in a fixed amount. Therefore, when the harvested root vegetables HC released to the field are carried out to the outside of the field, they can be collected in a batch by almost a predetermined amount, and efficient collection work is performed.

In the first embodiment, the harvest belt 10,
11 was made of substantially the same length, but this was used as in the second embodiment shown in FIGS.
The length of the rear end of the harvest belt may be longer than that of the harvest belt 11. The other structure is the same as that of the first embodiment shown in FIGS. 1 to 3. In the case of this embodiment, the harvested root vegetables HC that are transported by the harvesting belts 10 and 11 and fall onto the laterally moving conveyor 23 from the transport end.
However, compared with the case of the first embodiment, it is released to the front side,
Moreover, the harvested root vegetables H with respect to the moving direction of the horizontal moving conveyor 23
Since C is discharged in a good posture, it is convenient for the arrangement of the lateral transfer conveyor 23.

Further, as in the third embodiment shown in FIG. 6, the harvest belts 10 and 11 extend from the starting end portion in the traveling direction of the machine body and are bent 90 degrees in the width direction of the machine body from there to bend in an L shape. The transport end may be exposed to the other end of the tractor 1. In the case of this embodiment, the lateral movement conveyor 23 in the first and second embodiments is used.
Also, the fall prevention / guide cover 24 is unnecessary and omitted. In this embodiment, the harvest belt 10 is rotatably driven by the rotary shaft 10a, and the harvest belt 1 on the fixed side is rotated.
1 may be allowed to float. In the case of this third embodiment, the harvest belts 10, 11
The root vegetables C are sandwiched by and extracted from the field, and the extracted harvested root vegetables HC are laterally conveyed and released from the end of the conveyance to the field where the harvesting work has already been completed. In this embodiment, the lateral moving conveyor 2 in the first and second embodiments is used.
3 and the fall prevention / guide cover 24 are omitted, the structure of the root vegetable harvesting device is simplified and the weight is reduced.

[0016]

As described above, according to the agricultural product harvesting apparatus of the present invention, the harvesting belts 10 and 11 are configured to drive the rear end sides of a pair of left and right endless belts, with the leading end side serving as a free end. Rocking arms that are arranged so that their sides rotate inward relative to each other, one tip side of the pair of endless belts is fixed, and the tip end side rotating portion of the other belt is pivotally supported at the base end side toward the fuselage side. A stopper 16 is pivotally attached to the tip end of the rocking member 14 so as to be rockable to the left and right, and a stopper 16 for restricting the rocking range of the rocking arm 14 is provided to allow the rocking side belt to swing within a predetermined range with respect to the fixed side belt. Since it is supported by, the swinging side belt swings according to the size of the harvested agricultural product C, and is clamped by the rotating force that rotates inward with the fixed side belt so that it is pinched, and pulled out from the field and transported. Agricultural product C and harvest belt 10, It can smoothly harvesting without damaging the 1 itself.

[Brief description of the drawings]

FIG. 1 is a perspective view of an entire root vegetable harvesting device according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view showing a state where the root vegetable harvesting device of the first embodiment is mounted on a tractor and a harvesting operation is performed in a field.

FIG. 3 is a partial plan view of the harvest belt.

FIG. 4 is a perspective view of an entire root vegetable harvesting device according to a second embodiment of the present invention.

FIG. 5 is a schematic plan view showing a state where the root vegetable harvesting device of the second embodiment is attached to a tractor and a harvesting operation is performed in a field.

FIG. 6 is a schematic plan view showing a state in which the root vegetable harvesting device according to the third embodiment of the present invention is mounted on a tractor to perform harvesting work in a field.

[Explanation of symbols]

 1 tractor 2 3 point link mechanism 3 root vegetable harvesting device 4 body frame 5 top link connecting part 6 lower link connecting part 7 input shaft 8 excavating blade 9 resistance plate 10,11 harvest belt 10a, 11a rotating shaft 10b, 11b belt tensioning Roller 12 Flexible transmission shaft 13,19 Shaft 14 Swing arm 15 Free end pulley 16 Stopper 17,18 Support frame 20 Hydraulic cylinder 21 Sensor 22 Gauge wheel 23 Horizontal movement conveyor 24 Fall prevention / guide cover C Root vegetable HC Harvest root vegetable

Claims (1)

(57) [Claims] 1. A harvesting belt (10, 11) comprising a pair of left and right endless belts for sandwiching a root vegetable (C) vegetated in a field on a traveling vehicle body (1) and pulling out from the field for harvesting.
In the agricultural product harvesting device equipped with, the harvest belts (10, 11) are configured to drive the rear end sides of a pair of left and right endless belts so that the tip ends are free ends and the tip ends rotate inward. disposed, and fixing one of the front end side of the <br/> pair of endless belts, swinging a tip side rotating portion of the other belt, which is pivotally supported a base end portion on the body side
Pivotally attached to the tip of the arm (14) so that it can swing to the left and right.
Stopper (16) that regulates the swing range of the arm (14)
Is provided between the fixed side belt and the swing side bell.
Agricultural harvesting device, characterized in that bets was oscillating freely supported in a predetermined range. I got it. The present invention has been made to solve the above problems.