JP3540977B2 - Harvester pre-processing unit - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pre-cutting unit of a harvester that cuts and harvests cultivated beans such as soybeans and red beans near the ground.
[0002]
[Prior art]
In a conventional pre-cutting section of a harvesting machine, a rotary cutter for cutting the stem of the cultivated beans introduced into the transport path near the ground is provided at a transport start end side of a transport device that transports the foliage of the cultivated beans upward and rearward. A blade is disposed in a state where its rotation axis is located on the side of the transport path, and the rotary cutting blade has a cutting edge portion at the forefront end that intersects a line segment in the front-rear direction passing through the rotation axis. It had a forward leaning posture, which was the lowest point.
[0003]
[Problems to be solved by the invention]
In the pre-cutting section of this type of harvester, it is necessary to adjust the cutting height of the cultivated beans by the rotary cutting blade, according to the type and degree of growth of the cultivated beans, cutting conditions such as fruiting condition, Depending on the cutting conditions, it may be desired to cut cultivated beans at a position near the ground.
However, in the conventional cutting pre-processing unit, the rotary cutting blade is configured to be in a forwardly inclined posture in which a cutting edge portion at the forefront end that intersects a line segment in the front-rear direction passing through the rotation axis thereof is the lowest point. Since the height of the ground gradually increases as the cutting edge portion deviates toward the transfer path side, the rotary cutting blade is cut so that the front cutting edge portion facing the transfer path is located near the ground such as the upper surface of the ridge. When the height is adjusted, the foremost cutting edge portion of the lower rotary cutter blade is more likely to bite into the ground, which not only shortens the life of the rotary cutter blade, but also increases the driving load. In addition, there is a problem that the cultivated beans that are harvested tend to become dirty due to an increase in the amount of soil splashed.
[0004]
SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and its main problem is to extend the life of a rotary cutting blade by simply and economically improving the mounting posture of the rotary cutting blade. Another object of the present invention is to provide a harvesting pre-processing unit of a harvester that can harvest cultivated beans in a state of less soil dirt while reducing driving load.
[0005]
[Means for Solving the Problems]

〔Constitution〕
A characteristic configuration of the pre-cutting unit of the harvester according to claim 1 of the present invention is provided with a transfer device including a pair of right and left transfer belts for transferring the foliage of cultivated beans upward and rearward, and a transfer start end side of the transfer device. In the meantime, a rotating blade with a downward slope that cuts the stem portion of the cultivated beans introduced into the transport path formed between the transport belts near the ground, in a state where its rotation axis is located beside the transport path. A harvesting pre-processing unit of a harvester configured with a single rotating blade arranged ,
The transport belt is configured with a transport-projected belt formed by projecting a transport projection for engaging and transporting by scraping the foliage of the crop, and is formed from the belt surface.
The start end side of the pair of left and right conveyor belts is formed in an outwardly open shape that extends outwardly away from the conveyance path at a position forward of the entrance of the conveyance path, so that the foliage of the crop is located on the front side in the machine body traveling direction. From the rear to the rear side, and merged into the entrance of the transport path,
The rotary cutting blade is characterized in that the front cutting edge facing the transport path has an inclined posture that is located at the lowest point near the center in the width direction of the transport path and near the junction.
[0006]
[Action]
According to the above-mentioned characteristic configuration, the rotation axis of the rotary cutting blade is disposed beside the transfer path that does not hinder the transfer of the harvested cultivated beans, but faces the transfer path among the blade edges of the rotary cutting blade. The front cutting edge portion is the lowest point, and the ground height gradually increases as the cutting edge portion deviates to the side of the transfer path, so that the rotary cutting blade is located near the ground such as the upper surface of the ridge, such as the front cutting edge facing the transfer path. Even when the cutting height is adjusted so as to be located at the position, it is possible to suppress the front-side cutting edge portion of another part from biting into the ground.
[0007]

〔effect〕
Therefore, the cultivated beans can be harvested in a state with little soil contamination, with a simple and economical improvement by simply devising the inclination posture of the rotary cutting blade, while extending the life of the rotary cutting blade and reducing the driving load. can do.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
FIGS. 1 to 3 show a combine which is an example of a harvester for cutting and threshing cultivated beans (one example of cultivated crops) such as soybeans and red beans, and a traveling machine A having a pair of right and left crawler traveling devices 1. A threshing device B for threshing the harvested beans, a control unit C, a hopper D for storing the threshed first grain, a driving unit E such as an engine, and the like are provided. A pre-cutting unit F that cuts two cultivated beans cultivated on the ridge near the ground and feeds the cut beans to the threshing device B is connected to the first horizontal axis X1 so as to be able to drive up and down.
[0009]
The cutting pre-processing unit F includes a row crop header 2 that cuts two cultivated beans near the ground and transports the cultivated beans backward, and a row of cut beans that are transported from the row crop header 2 at one location in the left-right direction. An auger 3 that collects and sends the harvested beans to the rear, and a supply conveyor 4 that transports the cut beans from the auger 3 to the threshing apparatus B.
[0010]
The row crop header 2 is attached to a cutting main frame 6 that is connected to a front end of a platform frame 5 having an auger 3 and a supply conveyor 4 so as to be vertically swingable around a second horizontal axis X2. Divider 7 that weeds the cultivated beans and the adjacent cultivated beans, and the foliage of the two-row cultivated beans that were weeded by the weeder divider 7 is pinched upward or backward along the transport path W or A pair of left and right transporting devices 8 for locking and transporting, and a disk rotation with a downward slope that cuts the stems of the cultivated beans introduced into the transporting path W of each transporting device 8 near the ground near the transport starting end. It comprises a cutting blade 9 and a gauge wheel 10 that rolls on the ground between ridges, which is an intermediate position between the left and right rotary cutting blades 9.
[0011]
Further, a gate-shaped cutting / elevating frame 11 which can swing up and down around the third axis X3 is attached to the platform frame 5, and two positions on the left and right sides on the distal end side of the cutting / elevating frame 11 are provided. A chain-like body 13 for suspending and supporting the row crop header 2 so as to be vertically swingable around the second horizontal axis X2 is attached to brackets 12 provided at two places on the left and right sides of the reaping main frame 6. A pair of left and right hydraulic cylinders 14 for vertically driving and swinging the row crop header 2 around the second horizontal axis X2 are provided between the platform frame 5 and the mowing lifting frame 11.
[0012]
As shown in FIGS. 4 and 5, the transfer device 8 is provided on a transfer case 8A having a forward-downward-tilted posture disposed along both sides of the transfer path W while forming a part of the mowing main frame 6. A conveyor belt 8B made of synthetic rubber provided with a number of conveyor protrusions 8b for pinching or locking and transporting the foliage of the cultivated beans, and a plurality of conveyor belts 8B that can be driven and rotated freely in a horizontal manner. The transporting projection 8b is configured to have a receding angle such that the leading end of the transporting projection 8b is positioned closer to the transport direction (the forward side of the fuselage). .
[0013]
Then, as shown in FIGS. 4 and 5, the rotating shaft 17 of the rotary cutting blade 9 is moved to the transfer device so that the rotation axis Y of the rotary cutting blade 9 is located on one side of the transfer path W. 8 is rotatably supported on one transfer case 8A, and a hydraulic motor 19 driven by a hydraulic oil supply from a cutting blade drive hydraulic pump 18 mounted on the traveling machine body A is provided on the one transfer case 8A. And a transmission chain 23 is wound around a driving sprocket 21 provided on an output shaft 20 of the hydraulic motor 19 and a passive sprocket 22 provided on a rotating shaft 17 of the rotary cutting blade 9. It is configured to be driven at 19.
[0014]
As shown in FIGS. 5 and 6, the rotary cutting blade 9 has a front cutting edge portion 9a corresponding to the center of the width of the conveying path W or substantially the center of the conveying path W among the front cutting edges facing the conveying path W of the conveying device 8. In order to reach the lowest point, it is configured to have an inclined posture in which it is lowered forward in a side view, and low on the transport path W side in a front view.
Specifically, the inclination angle θ1 of the rotary cutting blade 9 with the horizontal line P1 in a side view is about 15 to 20 degrees, and the inclination angle of the rotation axis Y with respect to a vertical line P2 in a front view (rotational cutting). The inclination angle θ2 of the blade 9 with the horizontal line in a front view is set to about 5 to 10 degrees.
[0015]
Further, among the cutting edges of the rotary cutting blade 9, the front cutting edge portion 9 a corresponding to the center of the width of the conveyance path W or substantially at the center thereof is the lowest point, and the cutting edge part which is deviated to one side of the conveyance path W as the side is shifted. Since the height above the ground gradually increases, the pair of lifting and lowering hydraulic cylinders 14 constituting the cutting height adjusting means are operated and controlled so that the rotary cutting blade 9 faces the center of the width or almost the center of the transport path W thereof. Even when the cutting height is adjusted so that the front cutting edge portion 9a is located near the ground such as the upper surface of the ridge, it is possible to prevent the front cutting edge portions of other portions from cutting into the ground.
[0016]
When the front blade edge portion 9a facing the transport path W of the rotary cutting blade 9 comes into contact with or digs into the ground such as the upper surface of the ridge, the rotating shaft 17 of the rotary cutting blade 9 exists on both sides of the transport path W. The soil is scattered slightly downward on the rear side of the other side, and the beans cut along the transport path W are transported upward and rearward, so that the soil is scattered on the cut beans. Hanging can be suppressed.
[0017]
As shown in FIGS. 1 and 7, the threshing processing chamber 25 of the threshing apparatus B includes a threshing rotor 26 for threshing the cut beans, a resistance plate 27, and threshing of the cut beans delivered from the supply conveyor 4. A supply belt 28 and a supply roll 29 to be supplied to the rotor 26, a rocking sorting device 30 for rocking and sorting threshing products falling from the threshing rotor 26 side, and a Karamin 31 for generating a sorting wind are arranged and sorted. A second bucket conveyor 32 for reducing and conveying the selected second thresh to the rocking and sorting apparatus 30, a first bucket conveyor 33 for conveying and supplying the selected first thresh to the hopper D outside the threshing apparatus B; Is provided.
[0018]
In addition, a weight plate 35 is attached to the threshing chip discharge passage on the rear side of the threshing apparatus B and to a portion where the threshing chip shredding device can be attached, instead of attaching the threshing chip shredding device. At the same time, on the outer wall of the hopper D, a chute 36 for discharging and storing the stored beans to a collection container or the like is formed on the bottom wall of the hopper D by swinging around an axis along the longitudinal direction of the machine. It is provided so as to be switchable between a discharge position connected to the discharge port and a storage position along the outer wall of the hopper D.
[0019]
Further, an oil tank 37 for exclusively storing hydraulic oil of the cutting blade drive system is disposed at a rear portion on the right side of the traveling machine body A and at a lower space forming portion of the hopper D. Is also used as a weight means for obtaining a front-rear balance.
[0020]
[Other embodiments]
(1) In the above-described first embodiment, the rotary cutting blade 9 is configured to be driven by the hydraulic motor 19, but the rotary cutting blade 9 is configured to be driven by power taken out from the transfer device 8 or the like. May be.
(2) In the first embodiment described above, the inclination angle θ1 of the rotary cutting blade 9 with the horizontal line P1 in a side view, and the inclination angle of the rotation axis Y with respect to a vertical line P2 in a front view (rotary cutting blade). 9 may be provided with an angle adjusting means for adjusting the inclination angle θ2 formed with the horizontal line in a front view.
[Brief description of the drawings]
FIG. 1 is a side view of an entire combine showing a first embodiment of the present invention. FIG. 2 is a perspective view of the entire combine. FIG. 3 is a partially cutaway rear view. FIG. FIG. 5 is an enlarged perspective view of the transporting device and the rotary cutting blade. FIG. 6 is an explanatory view showing an inclination angle of the rotary cutting blade. FIG. 7 is an enlarged exploded side view of the threshing device and the hopper.
W Transport path Y Rotary shaft core 8 Transport device 9 Rotary cutting blade 9a Front cutting edge

Claims (1)

A transport device comprising a pair of left and right transport belts for transporting the foliage of the cultivated beans upward and backward is provided, and on the transport start end side of the transport device, the cultivated beans introduced into the transport path formed between the transport belts are provided. A harvester for a harvester , comprising a rotary cutter blade having a downward slope that cuts a stem portion near the ground, and a single rotary cutter blade disposed with its rotation axis positioned beside the conveyance path. A pre-processing unit,
The transport belt is configured with a transport-projected belt formed by projecting a transport projection for engaging and transporting by scraping the foliage of the crop, and is formed from the belt surface.
The start end side of the pair of left and right conveyor belts is formed in an outwardly open shape that extends outwardly away from the conveyance path at a position forward of the entrance of the conveyance path, so that the foliage of the crop is located on the front side in the machine body traveling direction. From the rear to the rear side, and merged into the entrance of the transport path,
The rotary cutting blade has a front cutting edge facing the transport path, and the harvester is configured to have a tilted posture in which the lower edge is located near the center in the lateral width direction of the transport path and near the junction. Preprocessing unit.

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