JPS6343055B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, in a combine harvester equipped with a desk-type cutter attached to the rear of the threshing device, cut straw shredded by the cutter is transferred horizontally into a spiral or through a gutter or the like that slopes downward toward the harvested field side. It is already known that the cut straw is transferred to the mown field and discharged, but if the cut straw is to be discharged uncut, a lateral transfer device separate from the means for lateral feeding the cut straw is required. This resulted in disadvantages such as an increase in the size of the aircraft, a complicated structure, and increased costs.

The purpose of the present invention is to improve the above-mentioned drawbacks, and the purpose of the present invention is to combine cut straw shredded by a desk-type cutter and uncut long straw by the same lateral transfer spiral. It is characterized by being transferred to the ground and released.

To explain the embodiment shown in the drawings below, in the embodiment shown in Figs. A device 3 is provided,
On the mown field side, an operation panel 4, a seat 5, an engine 6, and a paddy processing section 6' are arranged in order from the front, and a desk-shaped cutter 7 is attached to the rear.

The cutter 7 has a switching plate 7 on the top of the casing.
It has a supply port 7b with a diameter, and supports parallel shafts 10 and 11 on which a number of rotary blades 8 and 9 are attached to the lower part of the supply port 7b. A straw conveying chain 12 is provided extending from the rear to above the cutter 7.

At the rear of the rear wall 7' of the cutter 7, a long straw guide plate 14, which is separated from the long straw guide passage 13, is suspended from the rear end of an upper surface plate 15 that covers the upper surface of the straw removal chain 12. The lower part of the long straw guide plate 14 and the lower part of the front wall 7c of the cutter 7 are connected in series to form a receiving trough 16, and in this receiving trough 16, the cut straw outlet 7d of the cutter 7 and the long straw are connected. A horizontal transfer spiral 17 facing the lower part of the guide path 13 and rotating so as to transfer the material toward the mowed field is mounted on a shaft.

In addition, the lower part of the long straw guide plate 14 and the receiving gutter 16
As shown in FIGS. 3 and 5, the discharge port 18 is formed by leaving the uncut land side and cutting out the cut land side.
Below that is a culm aggregate 19 that partially protrudes toward the already cut field.
is provided.

In the above-mentioned device, when the switching plate 7a is opened, the waste straw sent back by the straw removal chain 12 falls into the supply port 7b, is shredded by the rotary blades 8 and 9, and is sent to the cut straw discharge port. It is discharged as cut straw from 7d.

This cut straw flows into the receiving trough 16 on the uncut field side (stock side) and is laterally fed to the mown field side by the lateral transfer spiral 17, while the ear side is subjected to a weak lateral feeding action by the lateral transfer spiral 17. Each of them is sprayed onto the cut field from the outlet 18.

In addition, when collecting and discharging waste straw without cutting it, the switching plate 7a is rotated downward and the supply port 7b is
When the straw is closed, the waste straw passes over the switching plate 7a, then falls through the long straw guide passage 13 and is transferred to the horizontal transfer spiral 17.
It is placed on the upper surface of the rear half of the culm, and in FIGS. 3 to 5, it is laterally transferred to the cut field side by clockwise rotation of the lateral transfer spiral 17, and is discharged from the discharge port 18 onto the culm collection 19. When a predetermined amount of the discharged long straw is collected, the culm collector 19 rotates downward against the spring 20 to release the long straw into the field, and immediately thereafter rotates upward to return to the converging position.

Note that the upper lip 7 forming the cut straw discharge port 7d
d' prevents the straw from being scraped into the cutter 7.

Next, the embodiment shown in FIGS. 6 to 8 will be described. The lateral transfer spiral 17 has a portion facing the discharge port 18 cut out to form only the shaft, and the cutter 7
A guide plate 21, which is slightly lower than the upper half of the lateral transfer spiral 17 and curved downward, is protruded from a portion of the upper edge 7d' of the cut straw discharge port 7d opposite to the discharge port 18.

Then, when the waste straw is fed into the cutter 7 from the supply port 7b and shredded, the cut straw is transferred horizontally into the spiral 1 on the stock side.
7 is transferred to the mown field side and then discharged to the discharge port 18.

In addition, when the waste straw is discharged as it is without being shredded, the long straw that falls into the long straw guide passage 13 is transported horizontally by the horizontal transfer spiral 17 until the end reaches the discharge port 18, and during that time, the straw is released. At the part facing the outlet 18, it slides on the guide plate 21 and moves to the mowed field side, is discharged backward from the outlet 18, and the culm aggregate 1
It is focused on 9.

At this time, the lateral transfer spiral 17 does not transfer the cut straw laterally at the part facing the discharge port 18, so that the stem part is discharged rearward in a well-aligned state, and the long straw collected on the culm 19 is transferred laterally. Since it does not interfere with the transfer spiral, it does not disturb the focusing attitude.

Another embodiment will be explained with reference to FIGS. 9 to 11. The receiving trough 16 is extended from the stock end side end to the part of the discharge port 18 near the stock end, and a part of the terminal end of the lateral transfer spiral 17 is It protrudes to the part near the stock end of the discharge port 18, and the waste straw that falls into the long straw guide passage 13 without being shredded is kept until the stock end part completely reaches the inside of the discharge port 18. Since the straw is transferred laterally, discharge of straw to the culm collection body 19 can be performed smoothly and reliably.

As described above, the present invention is a combine harvester in which a desk-type cutter is attached to the rear of the threshing device, a long straw guide plate is provided at the rear of the cutter across a long straw guide passage, and a straw cutter provided at the lower part of the cutter is provided. A lateral transfer spiral facing the discharge port and the lower part of the long straw guide path and toward the cut field side is provided, and the lower part of the long straw guide plate on the lower side in the transfer direction is cut out to form the discharge port, so that the same The horizontal transfer spiral makes it possible to transfer and discharge both cut straw shredded by the cutter and unshredded long straw to the mowed field side, making it possible to make the machine significantly smaller and lighter, and the structure is simple. This can significantly reduce costs.

In addition, in the invention in which a guide plate is provided at the rear lower part of the cutter, corresponding to the discharge port, to protrude rearward to receive and guide the long straw that has fallen into the long straw guide path, the straw is removed by a horizontal transfer spiral. The transfer action is applied only to the area to be traversed, so there is no variation in the amount of lateral movement, and the stocks can be discharged with the stems well aligned.

[Brief explanation of drawings]

The drawings show a part of an embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view of the combine harvester, Fig. 2 is a side view of the same, Fig. 3 is a perspective view of the main part, and Fig. Figure 4 is a cross-sectional view taken along line AA in Figure 3, Figure 5 is a cross-sectional view taken along line B-B as above, Figure 6 is a perspective view of the main parts of another example, and Figure 7 is a cross-sectional view taken along line CC in Figure 6. Figure 8 is a sectional view taken along the line DD as above, Figure 9 is a perspective view of a main part of another embodiment, Figure 10 is a sectional view taken along line EE in Figure 9, and Figure 11 is a sectional view taken along line F- It is an F sectional view. 1... Threshing device, 7... Cutter, 7a... Switching plate,
7b... Supply port, 7d... Discharge port, 13... Long straw guide passage, 14... Long straw guide plate, 16... Receiving gutter, 17... Lateral transfer spiral, 18... Discharge port, 19... Culm collection.

Claims (1)

[Scope of Claims] 1. In a combine harvester in which a desk-type cutter is attached to the rear of the threshing device, a long straw guide plate is provided at the rear of the cutter across a long straw guide passage, and a cutting straw provided at the bottom of the cutter is provided. A lateral transfer spiral is provided facing the discharge port and the lower part of the long straw guide path and toward the cut field side, and the lower part of the long straw guide plate on the lower side in the transfer direction is cut out to form the discharge port. Straw disposal equipment for combine harvesters. 2. In a combine harvester equipped with a desk-type cutter at the rear of the threshing device, a long straw guide plate is provided at the rear of the cutter across a long straw guide passage, and a straw discharge port provided at the bottom of the cutter and the long straw A lateral transfer spiral facing the lower part of the guide path and toward the mown field side is provided, the lower part of the long straw guide plate on the lower side in the transfer direction is cut out to form a discharge port, and a portion corresponding to the discharge port is provided, A waste straw processing device for a combine harvester, characterized in that a guide plate is provided protruding rearward to catch and guide long straw falling from a long straw guide path. 3. The straw removal device for a combine harvester according to claim 2, wherein the lateral transfer spiral at a portion facing the guide plate is omitted, and the guide plate is positioned slightly below the upper end of the lateral transfer spiral. 4. The straw disposal device for a combine harvester according to claim 2, wherein a portion of the lateral transfer spiral protrudes from the discharge port.