JPH0451561Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention mainly relates to a sorting device such as a conventional combine harvester for threshing and sorting rice, wheat, soybeans, etc.

[Conventional technology]

The inventors of the present application previously proposed a combine harvester that combines an axial flow threshing mechanism (screw-type threshing mechanism), a screw-type sorting mechanism, and a sorting blower, and also proposed a We have proposed a configuration in which the size of the mesh is larger than that of the front mesh, through which the split ears, unshelved matter, etc. in the material to be sorted leak out, and are then reduced.

[Problem that the idea aims to solve]

When rice, wheat, soybeans, etc. were harvested using the above-mentioned combine harvester, it was confirmed that the threshing and sorting work could be carried out smoothly overall, but on the other hand, the following problems were found. When the amount of threshing and sorting is large, the sorting capacity is insufficient with the sorting air from the sorting blower alone, and in particular, the amount of dust discharged to the outside of the machine is slightly reduced, and a large amount of fine straw waste falls into the No. 2 reduction section. There are things to do. The rear half of the screw-type sorting mechanism (the part with a large mesh of the sorting net) obstructed the flow of sorting air, and a stagnation phenomenon was observed in the flow of sorting air in the sorting room (although it was found that increasing the air volume in the wind sorting section (This can be solved if the problem is solved, but in that case, the entire aircraft will become larger). At the beginning and end of threshing and sorting work, that is, when the amount of grain and straw in the sorting section is small, long straw and short culms leak from the sorting net and get mixed into the grain opening (first opening). There is. Therefore, the present invention is a sorting device such as a combine harvester that improves the accuracy of the sorting action of the wind sorting section installed below the screw-type sorting mechanism, and that can exhibit stable performance under any threshing and sorting conditions. The purpose is to provide

[Means to solve the problem]

In order to achieve this objective, the present invention is equipped with a reaping mechanism that is installed on a traveling vehicle body and reaps the crops planted in the field, a transport mechanism that transports all of the harvested crops toward a threshing mechanism, and a transport mechanism that transports all of the harvested crops to a threshing mechanism. In a combine that is equipped with a threshing mechanism for threshing all the crops supplied from the mechanism and a sorting mechanism for sorting the material to be sorted, a handling chamber consisting of a handling barrel and a receiving net having spiral handling teeth and radial handling teeth on the outer periphery. In addition, multiple screw augers are installed almost horizontally in the sorting room, which is located below the receiving screen in the handling room and inside the dust exhaust port at the end of the handling room. and a sorting mechanism having a net having a mesh size that allows the grains to be sorted to leak through, and sorting the material to be sorted that has leaked through the receiving net while being moved by a screw auger, A sieve line is provided at the end of the sorting mechanism, and a conveyor belt is provided below the sorting chamber to transport the materials that have leaked out of the sorting chamber. A swinging sorting mechanism is provided to separate only the leaked material to be sorted, and the swinging sorting mechanism and sieving line are controlled by a sorting fan installed below the conveyance belt and a dust removal fan installed behind the sorting mechanism. It is characterized by forming a sorting air path through which it passes.

[Effect]

With the above configuration, a sieve line is attached to the end of the sorting mechanism of a conventional combine harvester, in which the material to be sorted that has been processed by the screw threshing mechanism that threshes the entire harvested crop is sorted in the sorting room. A conveyance belt is placed below the sorting room to transport the objects that have leaked out of the sorting room, and only the objects that have been conveyed by this conveyor belt and the objects that have leaked out of the sorting room are separated. A oscillating sorting mechanism is provided, and a sorting air blower provided below the conveyance belt and a dust removal blower provided behind the sorting mechanism form a sorting air path passing through the oscillating sorting mechanism and the sieve line. The sorting efficiency and sorting accuracy of the threshing device of a conventional combine are improved, and a high-performance sorting mechanism is exhibited under any threshing conditions.

【Example】

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a combine harvester body having a crawler-type running section 2;
A reaping/transporting section A is provided in the front part so as to be movable up and down, and a threshing/sorting section B, a control section C, an engine (not shown), etc. are mounted on the upper part. The reaping/conveying section A includes a reel 3, a reciprocating cutting blade 4, a raking auger 6 equipped with a crank finger 5, and a culm of grain that has been harvested by the cutting blade 4 and raked by the raking auger 6, and a rear oblique direction. It consists of an endless conveyance chain 7 and the like that conveys upward, and is moved up and down by the expansion and contraction of a hydraulic cylinder 8. The threshing/sorting section B has a handling drum 10 horizontally supported in the handling chamber 9 with its axis directed in the front-rear direction.
The front end has a taper with a small diameter at the front and a large diameter at the rear to form a scraping cylinder 11.A spiral scraping blade 12 is provided on the outer periphery of this scraping cylinder 11, and the conveyor It communicates with the conveyance end of chain 7. A spiral handling tooth 13 is provided on the outer periphery of the handling barrel 10, and a large number of radial handling teeth 14 are protruded from the upper edge of the spiral handling tooth 13 (see FIG. 2). Additionally, connecting teeth 15 are provided between the pitches of the spiral teeth 13. A receiving net 16 is stretched in an arc shape on the lower side of the handling cylinder 10, and the rear end of the receiving net 16 is opened to form a dust exhaust port 17. The upper part of the handling chamber 9 is covered with a handling chamber cover 18.
In addition, dust feeding valves 19 also shown in FIG. 2 are provided at predetermined intervals. The intersecting angle of the dust feeding valve 19 with respect to the handling cylinder 10 can be adjusted. A sorting room 20 is provided below the handling room 9. In the sorting chamber 20, as shown in FIG. 2, three coarse sorting screw augers 21 are provided directly below the receiving net 16 in parallel (horizontally) with the handling cylinder 10. A sorting net 22 having a mesh size that allows grains to be sorted to leak out is stretched over the receiving gutter portion of each coarse sorting screw auger 21, and its rear end is open. An endless belt conveyor 23 is provided below the sorting net 22 to convey the first items and contaminants that have leaked through the sorting net 22 toward the rear. A sorting fan 24 is provided below the belt conveyor 23, and its air outlet is open toward the rear. A swinging sorting device 25 and a sieve wire 26 are disposed in this sorting air path, and the swinging sorting The device 25 is provided below the conveyance end of the belt conveyor 23 and above the No. 1 auger 27, and the sieve line 26 is provided below the open end of the sorting net 22 and above the No. 2 auger 28. A suction type dust removal blower 29 is provided at the upper rear end of the sorting chamber 20, and the rear thereof is opened as a dust exhaust port 30 to the outside of the machine. A bucket conveyor 31 is provided at the conveyance end of the No. 1 auger 27 to discharge and store the No. 1 item outside the machine, and a bucket conveyor 31 is provided at the conveyance end of the No. A return conveyor 32 is provided and communicates with the scraping cylinder 11. In addition, the code|symbol 33 is a re-cutting device. In a combine harvester with such a configuration, when performing harvesting work, each part is operated by a worker riding on the control part C, and as the machine moves, the reel 3 scoops up the grain culms planted in the field. It is harvested with a blade 4, collected with a scraping auger 6, sent to the rear, and sent into a handling room 9 with a conveyance chain 7. In the handling chamber 9, the grain culm is raked in by the raking blades 12 of the raking cylinder 11, and the grain is threshed while being fed in the axial direction by the spiral handling teeth 13, radial handling teeth 14, connected handling teeth 15, etc. of the handling cylinder 10. The threshed grains leak through the receiving net 16, and the remaining grain culms are discharged from the machine through the discharge culm opening 17. The angle of the dust feeding valve 19 is adjusted depending on the type, variety, moisture content, etc. of the crop to be threshed. The grains and fine straw waste that have leaked through the receiving net 16 are sent backwards and sorted by the coarse sorting screw auger 21, and the No. 1 grains leak through the sorting net 22 and fall onto the belt conveyor 23. However, cut ears, grains attached to branch stalks, small straw culms, etc. are discharged from the opening at the rear end of the sorting net 22. The No. 1 grains falling from the conveyance end of the belt conveyor 23 are sorted by the sorting air from the sorting blower 24 and the suction air from the dust removal blower 29, and are further sorted by the swinging sorting device 25 to form the No. 1 grains. Only the particles fall into the No. 1 auger 27 and are stored in a storage bag or the like outside the machine via the bucket conveyor 31. What remains in the oscillating sorting device 25 is sent to the No. 2 auger, and the remaining culms, which are discharged from the rear end opening of the sorting net 22, fall onto the sieve line 26, the adhering grains are sent to the No. 2 auger 28, and the stem culms are The dust is discharged out of the machine from the dust exhaust port 30 by the sorting air. The second grain that has fallen onto the second auger is returned to the position of the scraping drum 12 in the handling chamber 9 by the second return conveyor 32, and is threshed again. During such threshing and sorting work, approximately 80% of the threshed straw culms supplied to the handling room 9 were discharged outside the machine from the culm discharge port 17 and were threshed. Approximately 99% of the grains pass through the receiving net 16 to approx.
It falls into the screw type sorting mechanism along with 20% long straw and straw waste. In the screw-type sorting mechanism, the grains fall from the sorting net 22 onto the belt conveyor 23 together with fine straw waste, and are conveyed as they are to the sorting air path where they are subjected to air sorting. On the other hand, the long straw, grains with stalks attached to them, cut grains, etc. remaining on the sorting net 22 until the end are discharged onto the sieve line 26 which is vibrating up and down, and the grains with attached stalks and grains with stalks are collected in the second row. The straw falls onto the auger and is discharged outside the machine. Moreover, in the swinging sorting device 25,
Particularly at the beginning and end of harvesting work, when there are few materials to be sorted in the screw sorting mechanism, the sorting net 2
Since the long straw leaking from the auger 2 is sorted out and sent to the rear No. 2 auger 28, no long straw gets mixed into the No. 1 auger 27 from beginning to end during the work.
Furthermore, the sorting wind flows above and below the oscillating sorting device 25, and two-stage wind sorting is always performed, so the sorting efficiency is high. In addition, in the screw sorting mechanism, most of the long straw and straw waste are transported backward in the direction of the shaft branch line and dropped onto the sieve line 26, so the amount of contamination into the No. 1 auger 27 is extremely small, and as a result, the number 1 auger 27 is installed here. Since the swinging sorting device 25 has a simple structure, for example, a swinging sheave with a length of about 20 cm, it is sufficiently effective, so that the structure is not complicated. In this way, a sorting air passage is formed below the screw-type sorting mechanism by the sorting blower 25 (pressure air) and the dust removal blower 30 (suction), and the swinging sorting device 25 and the sieve wire are installed in this air passage. By adding 26, it became possible to perform a very accurate sorting action, and also ensured the sorting action during high flow rate processing. Note that the re-cutting device 33 is used when harvesting paddy rice or wheat and cutting at a high height. For example, the cutting blade 4 cuts and harvests the crop at a height of about 30 cm above the ground, and the remaining 30 cm
The part is cut off from the base of the plant using a re-cutting device 33 and processed so as not to hinder subsequent tilling and sowing operations. Further, in the above embodiment, the radiation handling tooth 14
is attached directly to the spiral handling teeth 13, but it may also be attached to the surface of the handling barrel 10 between the pitches of the spiral handling teeth 13.

[Effect of the idea]

As explained above, according to the sorting device such as a combine harvester according to the present invention, the following effects can be achieved. A conventional combine harvester that threshes and sorts the entire crop is equipped with a handling chamber consisting of a handling barrel with spiral handling teeth and radial handling teeth on the outer periphery, and a receiving net.
It is possible to perform efficient threshing work while moving the grain to be threshed by the handling cylinder in the handling room. A plurality of screw augers are arranged almost horizontally in the sorting section provided below the receiving screen of the handling room and inside the terminal dust exhaust port of the handling room, and the screw augers are stretched over the receiving troughs of these screw augers to cover the screen. The screen has a pair of meshes that are large enough to allow sorted grains to leak through, and a sorting mechanism is provided to sort the material that has leaked through the receiving net while moving it with a screw auger. Only the leaked material to be sorted can be received and efficiently sorted in the sorting room while being moved with a small sorting load by multiple screw augers. A sieve line is provided at the end of the sorting mechanism, and a conveyor belt is provided below the sorting chamber to transport the materials that have leaked out of the sorting chamber. A swinging sorting mechanism is provided to separate only the leaked material to be sorted, and the swinging sorting mechanism and sieving line are controlled by a sorting fan installed below the conveyance belt and a dust removal fan installed behind the sorting mechanism. Because it has a sorting air path that passes through, the sorting efficiency and sorting accuracy are extremely high despite its simple configuration, and it exhibits high-performance sorting functions even under adverse working conditions such as threshing and sorting crops with high moisture content. can do.

[Brief explanation of drawings]

FIG. 1 is an overall side view of a combine harvester showing an embodiment of the present invention, and FIG. 2 is a partial sectional view. A... Reaping/transporting section, B... Threshing/sorting section,
C... Control section, 1... Combine harvester body, 2...
Traveling part, 3... Reel, 4... Cutting blade, 5... Crank finger, 6... Scraping auger, 7... Conveyance chain, 8... Hydraulic cylinder, 9... Handling room, 1
0... handling cylinder, 11... scraping cylinder, 12... scraping blade, 13... spiral handling tooth, 14... radial handling tooth, 1
5...Connection handling tooth, 16...Receiving net, 17...Dust exhaust port, 18...Handling chamber cover, 19...Dust feeding valve, 20
...Sorting room, 21...Rough sorting screw auger,
22... Sorting net, 23... Belt conveyor, 24
... Sorting blower, 25 ... Oscillating sorting device, 26
... Sieve line, 27 ... No. 1 auger, 28 ... No. 2 auger, 29 ... Dust removal blower, 30 ... Dust exhaust port, 31 ... Bucket conveyor, 32 ... No. 2 reduction conveyor, 33...Re-cutting device.

Claims (1)

[Scope of Utility Model Registration Claim] A reaping mechanism that is installed on a traveling vehicle body and harvests crops planted in a field, a transport mechanism that transports all of the harvested crops to a threshing mechanism, and a supply from the transport mechanism. A combine harvester is equipped with a threshing mechanism for threshing all the harvested crops, and a sorting mechanism for sorting the material to be sorted. A plurality of screw augers are installed almost horizontally in the sorting chamber, which is located below the receiving screen of the chamber and inside the terminal dust exhaust port of the handling chamber. a sorting mechanism having a net having a mesh size that allows sorted grains to leak through, and sorting the material to be sorted that has leaked through the receiving net while moving it with a screw auger; A sieve line is provided at the terminal end, and a conveyor belt is placed below the sorting chamber to transport the materials that have leaked out of the sorting chamber. A swinging sorting mechanism is provided to sort only the materials to be sorted, and a sorting blower installed below the conveyance belt and a dust removal blower installed behind the sorting mechanism are used to control the sorting air that passes through the swinging sorting mechanism and the sieve line. A sorting device such as a combine harvester, which is characterized by having a groove formed therein.