JPS63177734A - Combine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Field of Application The present invention relates to a combine harvester equipped with a threshing device that travels through farmland and whose harvesting section guides the harvested husk to the threshing device to harvest grain. In particular, the present invention relates to a combine harvester equipped with a laser cutter device as a means for cutting off culms.

fbl Prior Art As shown in FIG. 5, a combine harvester generally has a threshing device mounted near its center and travels through farmland by the rotation of crawlers 53 provided below. At the front of the combine, there is a cutting section 5.
2, and this reaping section 52 has a divider 56.
and a trigger claw 55. The crops located in front of the combine harvester are guided into the cutting section 52 by the action of the divider 56 and the trigger pawl 55 . A cutting blade 54 is provided in the lower part of the inside of the cutting part 52, and cuts the crops guided into the cutting part 52 from the bedside.

The culm thus harvested from the base of the plant is led to the threshing device 51 by a conveyance device, and the grains are harvested. mower blade 5
4 generally represents a reciprocating cutting blade, and the sliding blade 7 reciprocates while being in contact with the fixed blade. This allows the crop to be harvested between the two.

(C1 Problem to be Solved by the Invention) However, in the conventional combine harvester described above, there is a problem in that the reciprocating movement of the sliding blade generates large vibrations and noise, which deteriorates the cutting work conditions, and the cutting blade becomes less sharp due to wear. There was a drawback that it deteriorated and the efficiency of reaping work decreased.

The purpose of this invention is to eliminate the need for cutting blades by reaping crops from the base of the plant using a laser beam, to prevent the generation of vibration and noise, to improve the conditions for reaping work, and to eliminate deterioration of the reaped condition due to wear. The purpose of the present invention is to provide a combine harvester that can improve work efficiency.

(d) Means for Solving the Problems The combine harvester of the present invention is a combine harvester that reaps the crop grown in the reaping section from the base of the stock, and has an illumination angle that is downward from the horizontal direction toward the front inside the reaping section. In this invention, a laser cutter device is provided which irradiates the base of the plant with a laser beam having a absorbed into the ground.

Embodiment FIG. 1 is a schematic side cross-sectional view of the reaping section of a combine harvester according to an embodiment of the present invention.

In the reaping section 2, laser cutter devices 8a and 8b are provided below a pasoka 9 that is rotatably provided inside a triggering device 5 and a divider 6. The laser cutter devices 8a and 8b are fixed to a plate 11 that reciprocates in a direction perpendicular to the direction of movement of the combine, which is indicated by an arrow in the figure. This plate 11 and laser cutter device 8
a and 8b are directed downward by an angle θ from the horizontal direction toward the front of the combine harvester. Therefore, laser light is irradiated from the laser cutter devices 8a and 8b as shown by the dashed line in the figure. This angle θ is the laser cutter device 8a, 8
The angle is such that the laser beam irradiated from the side is not exposed in front of the triggering device 5 and the divider 6.

FIG. 2 is a schematic plan view showing the reaping section of the combine harvester.

Inside the reaping section 2, the plate 11 is aligned with arrows C and D.
It moves back and forth in the direction. This reciprocating movement of the plate 11 is
The rotation of the drive shaft of the crawler 53 shown in FIG. 5 is transmitted through a general rank mechanism (not shown) to provide driving force.

As a result, the laser cutter devices 8a, 3b reciprocate from positions 8a', 8b' indicated by two-dot chain lines in the figure to states 8a'', Bb'' indicated by three-dot chain lines in the figure. At this time, the left laser cutter device 8 is in state 8a'.
a and the right laser cutter device 8b located in state 8b″° overlap at the central position.

According to this embodiment with the above configuration, when the combine moves in the direction of the arrow and the crop 21 is guided into the reaping section 2,
Laser beams from the laser cutters 8a and 8b hit the base of the crop 21. As a result, the crop 21 is cut from the plant base, and the culm is guided to the threshing device by the bassoka 9 and a conveying device (not shown). When cutting grain culms, the laser beam has an irradiation angle that is downward by an angle θ from the horizontal direction toward the front, so that the upper end of the stock that is cut in front by the distance of the laser cutter devices 8a and 8b and the laser cutter Device 8a
, 8b, there is a difference in height H between them. This prevents the plant base from which the culm has been cut off from coming into contact with the laser cutter devices 8a, 8b, thereby preventing damage to the laser cutter devices 8a, 8b. For the same reason, the laser light that does not hit the crops is absorbed by the ground within the cutting section 2, so safety can be ensured. Further, since the left and right laser cutter devices 8a and 8b overlap near the center and reciprocate, crops can be reliably cut. Note that the plate 11 can be replaced by a member that fixes the sliding blade of the cutting blade of a conventional combine harvester.

FIG. 3 is a plan view of essential parts showing another embodiment of the invention.

In the figure, a rotating shaft 31 passes through a portion of the laser cutter devices 3a and 3b. Feed screws 32a and 32b are cut into the rotating shaft 31 from both sides toward the center. This feed screw 32a.

Protrusions 33a and 33b provided in the holes of laser cutter devices 8a and 8b are respectively engaged with 32b. When the shaft 31 is rotated in this state, the feed screws 32a and 32b also rotate, and the protrusions 33a and 33b respectively rotate the feed screws 32a and 32b.
32b.

As a result, the left laser cutter device 8 reciprocates in the direction of the arrow C and the right laser cutter device 8b.
moves in the arrow direction and C direction.

In this way, each time the feed screw mechanism is used, the two laser cutter devices 3a and 3b can be reciprocated in opposite directions.

In addition, the focal position of the laser cutter device can be set to a shorter position than during reaping work, and culm waste etc. attached to the front surface of the laser cutter device can be incinerated and removed to maintain a good laser beam irradiation state. You can do it like this. Further, as shown in FIG. 4, the laser cutter devices 8a and 8b are configured to be swingable from the side, and by controlling the swing angle, crop cutting height control JMn can be performed. In this case, a mirror may be arranged in front of the laser cutter devices 8a, 8b, and the irradiation angle may be changed by changing the angle of this mirror.

(g) Effects of the Invention According to the present invention, crops guided into the reaping section by the travel of the combine harvester can be reaped by the laser cutter device. Therefore, the fixed blade and the sliding blade that slides thereon can be eliminated, and vibration and noise can be eliminated to improve working conditions. In addition, since the harvesting work is performed without direct contact with the crops, there are no parts that wear out, and deterioration in work efficiency can be prevented. Furthermore, since the laser light is irradiated horizontally and downward, the laser light that does not hit the crop does not reach far outside the reaping section, ensuring safety.

[Brief explanation of the drawing]

FIG. 1 is a schematic side cross-sectional view of the main parts of a combine harvester according to an embodiment of the present invention, and FIG. 2 is a schematic plan view of the main parts of the combine harvester. Further, FIG. 3 is a plan view of the main part showing another embodiment of the invention, and FIG. 4 is a schematic side view of the main part showing still another embodiment of the invention. FIG. 5 is an external view of a general combine harvester. 2-Reaping section, 8a, 8b-laser cutter device.

Claims (1)

[Claims] (1) In a combine harvester that reaps a crop guided into a reaping section from the base of the plant, a laser cutter device that irradiates the base of the crop with a laser beam directed forward and having an irradiation angle downward from the horizontal direction inside the reaping section. A combine harvester characterized by being provided with.