JPH0551247B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a feeder device in a combine harvester, and more particularly to a device for feeding grain to a threshing section in a combine harvester equipped with a screw-type threshing section.

Prior Art A screw auger, which is originally used to transport grain in the axial direction, can be enlarged in diameter and given a predetermined rotational speed to maintain the circumferential speed necessary for the crops on the screw blades. In addition to its transport function, it also has a threshing function. At this time, if you use the receiving gutter part of the screw auger to hold the crop and change the receiving net to an appropriate size, the grains threshed in the handling chamber will leak downward from the receiving net, and the stalks and straw waste will be removed from the culm. It now has a so-called sorting function that transports it in the axial direction and discharges it outside the machine. This is a screw-type threshing machine.

A combine harvester equipped with a conventional screw-type threshing function has a feeder house installed in front of the threshing section and equipped with a chain conveyor for feeding cut crops to a handling room.

In such a combine, the width of the threshing section and the feeder house are approximately the same.

Problems to be Solved by the Invention In a combine harvester equipped with a screw-type threshing section as described above, the width of the threshing section and the width of the feeder house are almost the same, so the grain culm supplied to both sides of the handling chamber stagnates. However, it has the disadvantage of poor intake performance into the handling room.

Means for Solving the Problems Therefore, the technical problem of the present invention is to provide a combine harvester that can smoothly supply grain culms transported in a feeder house to a threshing section.

The technical means of the present invention for solving this technical problem is characterized in that the width center of the feeder house is offset toward the rotation suction side with respect to the axis of the screw-type handling cylinder.

Effects of the Invention In the present invention, the width center of the feeder house is offset from the axis of the screw-type handling drum toward the rotational suction side, so that the grain culm is supplied to the rotational suction side of the screw-type handling drum. It has the characteristic of improving the performance of taking it into the threshing section.

Example The following will explain the embodiments shown in the drawings.

First, the entire combine harvester equipped with a screw-type threshing machine will be explained.

In Fig. 2, grain culms are scraped in by a scraping reel 1 and harvested by a cutting blade 2, and the cut grain stalks are conveyed from a scraping auger 3 to a handling room 6 by a chain conveyor 5 in a feeder house 4, and are transported by a screw-type The grain is threshed in the handling drum 7.

The threshed straw falls from the receiving net 8 onto the rotating auger 9, and is moved by the rotating auger 9 toward its terminal end, while the straw is discharged from the culm opening 6a.

During this conveyance process, the grains and fine straw waste fall downward from the receiving net 10 stretched over the receiving gutter portion of the auger 9, and only the long straw is carried toward the dust exhaust port 11. Receiving net 1
Leakage including grains that fell from the conveyor 12
The grains are transported towards the first gutter, and are subjected to sorting air from the end of the conveyor 12 by a blower fan 13 like a winnower, so that the grains fall into the first gutter 15, the second grains fall into the second gutter 14, and the grains fall into the first gutter 15. The grains that have fallen are transported to the paddy tank via the grain lifting cylinder 17, and the second grains are transported to the recycle conveyor 1.
8 is returned to handling room 6.

19 is a crawler equipped with a threshing device;
0 indicates the cockpit.

The above is an overview of the combine harvester, but the details of each part will be explained as follows.

The bottom plate angle of the illustrated feeder house 4, that is,
The angle c between the discharge direction B of the supplied grain culm to the handling cylinder and the slope of the handling cylinder cone 7a at the minimum cutting height of the combine is at least equal to or less than a right angle. With this configuration, the grain culm handling body cone (rotary cone) can be used at any cutting height.
Since the direction of grain discharge to the grain is the same as the feed direction of the screw, the inheritance and intake performance is improved, and the supplied grain culm is discharged in a stable posture, reducing losses in the threshing section.

Further, the illustrated receiving net 8 includes a portion 8a corresponding to the cone portion 7a of the handling barrel 7, and the grains threshed in the cone portion immediately fall toward the auger 9. This eliminates the occurrence of small grains.

Furthermore, the auger 9 shown in FIG.
A protrusion 9b is protruded between a and a, and this is in pressure contact with the crimp net 10 to promote the leakage of grain threshing and to prevent the adhesion of dust. Three augers 9 are installed as shown in FIG. 4.

The sorted air from the Karachi 13 is sent to the air passage 2 shown in Figure 3.
1, the air passage 21 is provided with a separation plate 22, and the air outlet of the upper air passage 21a is provided with a guide plate 23. A falling plate 2 corresponding to the guide plate 23 guides grains etc. from the conveyor 12 to fall.
There are 4.

The upper end of the grain board 25 of the first gutter 15 and the second gutter 14
Adjustment plates 25a and 26a are attached to the flow grain board 26, so that the amount of processed material flowing down is adjusted according to the air volume from the winnow.

In addition, 27 in FIGS. 2 and 3 is a discharge plate at the discharge culm 6a, 28 and 28 in FIG. 4 are guide plates for guiding leakage from the receiving net 8 toward the auger 9, and 29 in FIG. , 29 indicate guide plates of the conveyor 12, respectively.

In addition, either the upper conveyor blade that rises or the lower conveyor blade that rises by rotating the lower pulley 16 of the reduction conveyor 18 either clockwise or counterclockwise by switching gears, etc. You can use this to return the second item. This makes it possible to change the direction in which the reduced material is introduced into the handling chamber.

The present invention is a combine harvester in which the width center of the feeder house 4 is offset from the axis of the screw-type handling cylinder toward the rotational suction side, and the axis of the screw-type handling cylinder 7 shown in FIG. Assuming that the center line A-A passes through the center O and the distances from the center line to both sides of the feeder house are W ₁ and W ₂ , the width of the feeder house 4 is W ₁ +W ₂ and W ₁ <W ₂ .

As described above, by offsetting the feeder house 4 to the rotational suction side of the handling drum 7, the grain culm is supplied to the rotational suction side of the handling drum, improving the performance of taking grain into the threshing section.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the entire combine, Fig. 2 is a front view of the entire combine, Fig. 3 is a detailed view of the threshing section of the combine, and Fig. 4 is a cross-sectional view of the same. 4... Feeder house, 6... Handling room, 7... Screw type handling cylinder, O... Axis center of handling cylinder, A-A...
Center line passing through the axis of the handling cylinder, W ₁ , W ₂ ... Distance from the axis of the handling cylinder to each side plate of the feeder house.

Claims (1)

[Claims] 1. A feeder device for a combine harvester, characterized in that the width center of the feeder house is offset toward the rotation suction side with respect to the axis of the screw-type handling barrel.