JPH08308370A - Thresher - Google Patents

Abstract

PURPOSE: To provide a thresher, equipped with a treating chamber on one side of a threshing chamber and a discharge dust treating chamber at the rear of the treating chamber and capable of preventing grading performances from deteriorating by diffusing threshed materials dropped from a terminal end part of a threshing chamber and those dropped from a terminal end part of the discharge dust treating chamber, and dropping the threshed materials onto a shaking shelf. CONSTITUTION: This thresher is obtained by arranging the starting end side of discharge dust fins 25 in a part where threshed materials are dropped between plural discharge dust guides 23, 23... and installing the starting end side of the discharge dust guides 23 and discharge dust fins 25 so as to overlap in the top and bottom when viewed from the side in installing a middle side plate 20 for dividing a treating chamber from a discharge dust treating chamber extended to the lower part of a threshing cylinder 2, arranging the plural discharge dust guides 23 on the side of the feeding direction of a grading wind in the middle side plate 20 located under the threshing cylinder 2 and installing the discharge dust fins 25 for diffusing the dropped threshed materials in the direction toward the feeding of the grading wind on a shaking shelf 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device for combine harvesters and harvesters.

[0002]

2. Description of the Related Art In a conventional threshing device such as a combine harvester or a harvester, as described above, the middle side plate 20 for partitioning the processing chamber 7 from the dust processing chamber 10 is extended below the handling cylinder 2 to Two
A plurality of dust guides 23 are provided on the inner side plate 20 located below the table. When the dust collecting fins 25 for diffusing the falling grain are provided on the swing rack 11, when the dust guides of the respective dust guides are provided. No dust fin 25 is provided between them, and moreover, it is not provided so as to be overlapped with the longitudinal direction of the dust guide 23.

[0003]

The threshing device such as the combine harvester or the harvester described above, especially when a large amount of grain culm is thrown into the threshing device, especially the threshing falling from the end portion of the handling cylinder 2, The grain removal moving on the rocking shelf 11 merges and accumulates on the rocking shelf 11, and the grain removal falling from the end portion of the dust treatment cylinder 8 and the rocking shelf 11 on the rocking shelf 11. There is a drawback that the moving grain-removing particles merge on the rocking rack 11 and are extremely piled up, which lowers the sorting ability.

The present invention is intended to solve such a problem.

[0005]

A threshing device such as a combine harvester or a harvester according to the present invention solves the above problems and has the following configuration. That is, in the threshing device having the above-mentioned configuration, the processing chamber 7 and the dust-exhaust processing chamber 10
The inner side plate 20 that partitions the partition is provided so as to extend below the handling barrel 2, and a plurality of dust guides 23 are provided on the sorting air feeding direction side on the middle side plate 20 that is located below the handling barrel 2. When the dust removal fins 25 for diffusing the falling grain are provided on the swinging rack 11 in the sorting wind feeding direction, the grain falling between the plurality of dust guides 23, 23 ... The threshing device is characterized in that the starting end side of the dust-exhausting fins 25 is arranged in a portion, and the dust-exhaust guides 23 and the starting end sides of the dust-extracting fins 25 are provided so as to vertically overlap in a side view.

[0006]

When a part of the threshing in the handling chamber 4 that has been threshed by the interaction between the handling tooth 1 of the handling barrel 2 and the handling net 3 reaches the opening communication portion A from the lower side of the handling chamber 4, The transfer means 14 of the cylinder 5 takes in the same, and sends it into the processing chamber 7 through the upper outer peripheral surface of the processing cylinder 5, and the remaining threshing is handled while being transferred to the threshing end side in the handling chamber 4. While threshing by the net 3 and the handling teeth 1, the scraping processing means 16 of the processing cylinder 5 similarly passes through the opening communication portion A from the lower side of the handling chamber 4,
It is taken into the processing chamber 7 via the upper outer peripheral surface of the processing cylinder 4. In this way, the grain-removed grains taken into the processing chamber 7 are transferred to the terminal end side, are subjected to the grain-removing process by the treatment net 6, the treatment means 15, and the scraping treatment means 16, and fall onto the rocking rack 11.

The grain removal that has not fallen is dammed by the inner side plate 20 that partitions the processing chamber 7 and the dust processing chamber 10, and the discharging means 17 provided at the end of the processing cylinder 5.
Is discharged from the opening communication portion A toward the upper side in the feeding direction in the handling chamber 4, merges with the grain removal transferred in the handling chamber 4, and is further transferred to the end side in the handling chamber 4. While being
Threshing is performed by the handling net 3 and the handling tooth 1.

The grain removed transferred to the end side in the handling room 4 is
A part of it is taken into the dust treatment chamber 10 from the opening communication portion B by the transfer means 19 provided at the front end of the dust treatment cylinder 8, and is transferred to the terminal side in the dust treatment chamber 10. ,
The dust-removal net 9 and the processing means 26 further thresh and disperse the dust-rejection net 9 in the lower part of the dust-removal processing chamber 10 to spread it and drop it onto the rocking rack 11. In addition, the remaining grain removal not taken into the dust treatment chamber 10 through the opening communication portion B in this way is as it is, the swing shelf 11 below.
Falling on top.

The grain removal taken into the dust treatment chamber 10 through the opening communication portion B described above, and the grain removal that has moved to the end portion of the dust treatment chamber 10 falls downward. In this way, the grain removal during the fall is brought into contact with the dust guides 23, 23, and is loosened, and the grain fall that falls from between the dust guides 23, 23 is loosened by the dust-fins 25. Therefore, even if it joins with the grain removal moving from the front on the rocking shelf 11, it does not become a lump and extremely pile up on one part. In addition, grain removal falling from the end portion of the dust processing chamber 10 also includes dust removal fins 25 during the fall.
Since it is loosened and falls on the rocking rack 11 while being diffused, even if it joins with the grain-removing grains that have moved on the rocking rack 11, it does not become a lump and extremely pile up on one part.

[0010]

1 to 5, there is shown a threshing device equipped with an embodiment of the present invention. Reference numeral 21 denotes a threshing device such as a combine harvester or a harvester. A threshing chamber 4 is provided on the upper front side in the threshing device 21, and the handling barrel 2 is provided with the handling barrel 2 in the handling chamber 4.
It is mounted by a. A feed chain 27 supplies grain culms to the handling room 4. A handling net 3 is arranged below the handling barrel 2, threshing is caused by an interaction between the handling teeth 1 and the handling net 3 of the handling barrel 2, and a swinging air selecting device 28 is arranged below the handling net 3. ing.

On one side of the handling chamber 4, there is provided a processing chamber 7 in which a processing drum 5 for treating grain is suspended by a processing drum shaft 5a, and further behind the processing chamber 7 and in the processing chamber. Trunk 5
Dust disposal chamber 1 in which dust disposal cylinder 8 is mounted on the same axis as a
0 is provided. Below the processing cylinder 5 and the dust removal processing cylinder 8,
A treatment net 6 and a dust treatment net 9 are installed respectively. Below the handling chamber 4, the processing chamber 7, and the dust-exhaust treatment chamber 10, there is installed a rocking rack 11 for receiving falling grain removal and sorting, and below the rocking rack 11. Kara 29 is provided on the starting end side of the sorting wind feeding direction, the first spiral 33 is provided on the lower side in the feeding direction of the sorting wind blown from the Kara 29, and the first spiral 33 is provided on the lower side in the sorting wind feeding direction. A number spiral 35 is provided.

The structure of the rocking rack 11 forming a part of the rocking wind selecting device 28 will be described. From the front part to the rear part of the rocking rack 11, there are provided a transfer rack 11a for transferring the dropped grain to the rear, a chaff sheave 11b for selecting the grain and a straw rack 11c for transporting the culms to the outside of the machine. Next, when the grain removal from the handling chamber 4 falls onto the transfer rack 11a of the rocking rack 11, the grain removing is sorted toward the rear end side due to the rocking of the rocking rack 11 in the front-rear direction. Be transferred. The grain that has not fallen falls from the end portion of the handling cylinder 2 onto the chaff sheave 11b, and the swinging action and the sardine 29
While being sorted by the wind selection action from the inside, it is transferred to the rear Straw rack 11c,
It is discharged from the rear end of c to the outside of the machine. The dust having a low specific gravity is discharged by the cross flow fan 30.

A part of the grain-removed grains in the handling chamber 4 is partitioned by the partition 13 by the transfer means 14 provided on the outer periphery of the front end of the processing cylinder 5 and having a rear thrust, and is also separated from the handling chamber 4. It is taken into the processing chamber 7 through the opening communication portion A that communicates with the processing chamber 7. The transfer means 14 has a spiral shape surrounding the outer periphery of the processing cylinder 5 in this embodiment. Further, the remaining grain removal passes through the opening communication portion A in the front part and is taken into the processing chamber 7 by the action of the scraping processing means 16 provided in the front part of the processing cylinder 5. In the present embodiment, the scraping processing means 16 is in the shape of a rod and is planted on the outer periphery of the processing cylinder 5. The grain removal thus taken into the processing chamber 7 is caused by the interaction between the cutting blade 31 provided in the processing chamber 7 and the scraping processing means 16, and further the processing means 15 and the processing net 6 are provided.
Is subjected to a high processing action and threshing while being cut, and the cut threshing drops to the transfer rack 11a on the rocking rack 11 and is transferred to the rear side for sorting. The grain-removing grains transferred to the rear in the processing chamber 7 while undergoing the above-described processing action are discharged from the lower side of the processing cylinder 5 by the discharging means 17 provided at the rear part of the processing cylinder 5 to the opening communication port A at the rear end. And is fed toward the upper outer peripheral surface of the handling cylinder 2 in the front direction of the handling chamber 4. In this embodiment, the discharging means 17 has a spiral shape surrounding the outer circumference of the processing cylinder 5,
As another shape, a shape such as a propeller may be provided on the outer periphery of the processing cylinder 5. In this way, a part of the grain removal generated in the handling chamber 4 is put into the processing chamber 7 from the handling chamber 4 and processed, and then the remaining grain removal is returned to the handling chamber 4 again. As shown in FIG. 4, the flow of this grain removal becomes a locus along the direction of an arrow having a substantially lateral 8 shape in a front view or a rear view.

The grain-removed grains that have been returned from the inside of the processing chamber 7 to the inside of the handling chamber 4 as described above are returned to the inside of the handling chamber 4 in the form of being returned to the front side, which is opposite to the rearward transfer when seen in a plan view. In the front part of the handling chamber 4, the thresher that has not been taken into the processing chamber 7 merges and is further transferred to the rear of the handling chamber 4 while undergoing the threshing process. The grain removal transferred to the rear of the handling chamber 4 is taken into the dust processing chamber 10 from the opening communication portion B by the transfer means 19 provided at the front end of the dust processing cylinder 8 and transferred to the rear. It is dropped on the rocking shelf 11 while being diffused. In the present embodiment, the transfer means 19 has a spiral shape surrounding the outer circumference of the dust removal processing cylinder 8. However, the opening communication part B
The grain removal that was not taken into the dust treatment chamber 10 from
It drops from the terminal end of the handling chamber 4 onto the rocking rack 11, and joins with the grain removal moving on the rocking rack 11.

The grain removal taken into the dust treatment chamber 10 by the transfer means 19 is further conveyed by the interaction between the treatment means 26 and the dust treatment net 9 while being conveyed to the end portion of the dust treatment chamber 10. It is threshed and falls on the lower rocking rack 11. The grains that have not fallen are conveyed to the end of the dust treatment chamber 10 and discharged onto the lower rocking rack 11 from the rear end opening 32 that extends rearward from the end of the handling chamber 4. , And joins with the grain removal that has moved on the rocking rack 11. The grain-removed grains discharged onto the rocking rack 11 are transferred to the rear Straw rack 11c while being sorted by the swinging action and the sorting wind from the Kara 29, and discharged from the rear end of the Straw rack 11c to the outside of the machine. To be done. The dust having a low specific gravity is discharged from the cross flow fan 30. As mentioned above, the dust treatment chamber 1
The grain-removed grains in the handling chamber 4 which have not been taken into 0 are similarly discharged onto the rocking rack 11. The discharged grain is transported to the rear Straw rack 11c while being sorted by the swinging action and the sorting wind from the Kara 29, and discharged from the rear end of the Straw rack 11c to the outside of the machine. Dust with a low specific gravity
It is sucked and discharged from the cross flow fan 30.

Due to the threshing processing action described above, the threshing dropped from the handling chamber 4 or the processing chamber 7 to the transfer rack 11a forming a part of the rocking rack 11 is caused by the rocking of the rocking rack 11. And is transferred to the rear by the transfer rack 11a. Due to the wind-selecting action from the Kara 29, straw debris passes above the chaff sheave 11b, and the cross flow fan 30 and the straw rack 1 at the rear side.
Sent to 1c. Due to the wind selecting action and the swing action of the swing shelf 11, the separated and leaked paddy is first taken into the helix 33 and is collected via the first fried cylinder 34. Also,
Despite the above-mentioned action, the grain-removal remaining on the chaff sheave 11b is transferred to the rear end of the chaff sheave 11b and further transferred to the straw rack 11c.
In the meantime, the residual processed product in which the branching grains are mixed leaks out from the vicinity of the end of the chaff sheave 11b and from the Straw rack 11c, and is taken into the second spiral 35 as the second processed product. The residual processed material that has not leaked is discharged to the outside of the machine by the cross-flow fan 30 or transferred to the end of the straw rack 11c and discharged to the outside of the machine. The second processed product taken into the second spiral 35 is returned to the transfer rack 11a, which forms a part of the swing rack 11 again, through the second lifted cylinder 36. The second processed material may be returned to the handling room 4 or the processing room 7.

With the configuration of the threshing device 21 as described above, high-speed and high-efficiency threshing selection work can be performed. However, even with such a threshing device 21, when a large amount of grain culms are conveyed by the feed chain 27, the sorting ability particularly deteriorates. In the so-called wet handling state where the grain culms are moistened with dew or the like, the reduction of the sorting ability becomes remarkable. The reason for this defect will be described. As described above, the grain removal carried to the end of the handling chamber 4 is taken into the dust processing chamber 10 from the opening communication part B, but there is also one that is not taken. In particular, during wet handling, since the grain-removed grains are in a lump form, they fall on the rocking shelf 11 as they are. Then, the swing shelf 11
It merges with the thresher that has moved up, and the thresher is extremely piled up in a part.

Similarly, the grain removal falling from the end of the dust treatment chamber 10 joins with the grain removal moving on the rocking rack 11, so that the grain removal extremely accumulates in a part. In this way, if the grain removal is extremely thick on a part of the swing shelf 11, the grain removal is conveyed to the rear in a lump form in spite of the sorting wind from the Kara 29 and the swing action of the swing shelf 11. Then, it is discharged to the outside of the aircraft. This is the grain (clam grain) that is present in the lumpy threshing grain.
However, the grain recovery rate is reduced because it is discharged as it is outside the machine.

Therefore, the middle side plate 20 is provided with a plurality of dust guides 23 so as to come into contact with the grain removal falling from the end portion of the handling chamber 4. Further, the swing shelf 11 is provided with the dust removal fins 25 positioned between the plurality of dust removal guides 23, and the dust removal fins 25 and the dust removal guides 23 are provided so as to overlap in the longitudinal direction. It was configured. As a result, the grain removal falling from the end portion of the handling chamber 4 comes into contact with the dust guide 23 to be loosened, and is further diffused by the dust fins 25 and falls on the swing shelf 11. In addition, even if the grain is dropped from the end of the dust processing chamber 10, the dust removal fins 2
It is diffused by 5 and falls on the rocking rack 11. Therefore,
Since the grain removal does not form a lump on the rocking rack 11 and does not extremely accumulate on a part thereof, the sorting wind from the Kara 29 and the rocking rack 11
Due to the swinging action of, the selection can be performed efficiently.

Next, the position of the terminal end of the dust collecting fin 25 will be described. The end portion of the dust-exhausting fin 25 is located rearward of the top 37a of the shelf 37, between the cross-flow fan guide 30a and the section 38, and the front portion of the straw rack 11c and the dust-extracting fin 25. A part of the rear part of the vehicle is overlapped. Conventionally, the crushed grain that was in the form of a lump in the rear of the first shelf 37 was moved on the Straw rack 11c and discharged to the outside of the machine.
In the rear of the top 37a of 7, that is, in the upper part of the second spiral 35, grain removal is caused by the dust removal fins 25 and the straw rack 1.
As it is sufficiently loosened by 1c, the grain can be taken out from the lumpy grain-removing grains.
Recovered in 5. Further, in the grain removal after loosening, since light dust is efficiently sucked by the cross flow fan 30 and discharged to the outside of the machine, the discharge efficiency of the dust is also improved.

Next, FIG. 6 will be described. The chaff sheave 11b of the rocking shelf 11 of the threshing device 21 is divided into a front chaff sheave 42a and a rear chaff sheave 42b with the top 37a of the first shelf 37 as a boundary. In addition, the front chaff sheave 42a and the rear chaff sheave 42b each have an angle of 4 so that the direction of the sorting wind can be changed.
0 and 41 can be changed, and rear chaff sheave 4
The angle of 2b can be changed largely.

As a result, the sorting wind is blown upward toward the threshing device 21, so that the grains do not move to the rear of the Straw rack 11c, and due to the specific gravity, the grains fall to the second spiral 35. The light dust is discharged from the cross flow fan 30 to the outside of the machine.

[0023]

Since the present invention is configured as described above, the grain removal falling from the end portion of the handling chamber 4 is prevented by the dust guide 23,
23 is abutted and loosened, and is further diffused by the dust-exhausting fins 25 and falls on the rocking rack 11. In addition, even if the grain is dropped from the end of the dust processing chamber 10, the dust removal fins 2
It is diffused by 5 and falls on the rocking rack 11. Therefore,
Since the grain removal does not form a lump on the rocking rack 11 and does not extremely accumulate on a part thereof, the sorting wind from the Kara 29 and the rocking rack 11
Due to the swinging action of, the selection can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a side view of a threshing device.

FIG. 2 is a plan view of a threshing device.

FIG. 3 is a perspective view.

FIG. 4 is a front view of the threshing device.

[Figure 5] Rear view

FIG. 6 is a side view of the rear part of the swing shelf.

[Explanation of symbols]

A opening communication part B opening communication part 1 handling tooth 2 handling body 2a handling body shaft 3 handling net 4 handling room 5 processing cylinder 5a processing body shaft 6 processing net 7 processing chamber 8 dust removal processing cylinder 9 dust removal processing net 10 dust removal Processing chamber 11 Swinging shelf 11a Transfer shelf 11b Chaff sheave 11c Straw rack 12 Sorting chamber 13 Partition body 14 Transfer means 15 Processing means 16 Scraping processing means 17 Discharging means 18 Partition body 19 Transfer means 20 Middle side plate 21 Threshing device 22 Left side plate 23 Dust collection guide 24 Rear side plate 25 Dust collection fin 26 Processing means 27 Feed chain 28 Swinging air selection device 29 Kara-no 30 30 Cross-flow fan 30a Cross-flow fan guide 31 Cutting blade 32 Rear end release part 33 Ichibansen 34 First fried grain Cylinder 35 Second helix 36 Second fried cylinder 37 First shelf 37a Top 38 Section 39 Section 40 Angle 41 Angle 42a Front cha Sheave 42b rear chaff sieve

Claims (1)

[Claims] 1. A processed material is provided on one side of a handling chamber 2 having a handling barrel 2 having a handling tooth 1 and a handling net 3 for threshing while transferring a grain culm in an axial direction, on the upper side in the grain culm feeding direction. A processing chamber 7 having a processing cylinder 5 and a processing net 6 for processing while transferring to the rear, and a dust processing cylinder 8 and a dust processing net 9 on the lower side in the grain culm feeding direction.
Dust treatment chambers 10 each having a rocking rack 1 are provided in parallel, and the rocking rack 1 is provided below the handling chamber 4, the treatment chamber 7 and the dust treatment chamber 10.
1, a sorting chamber 12 is provided, and an opening communication portion A is divided between the handling chamber 4 and the processing chamber 7 in the front-rear direction by a partition 13 to form an outer periphery of the processing cylinder 5. Has
A transfer means 14 provided on the transfer upper side for transferring the object to be processed to the rear, a processing means 15 located on the transfer lower side of the transfer means 14, and a scraping processing means 16 are provided respectively, and the transfer means 14 is provided. Discharge means 17 for discharging the object to be processed toward the start end side in the handling chamber 4 through the opening communication portion A is provided at the terminal end portion, and between the dust treatment chamber 10 and the handling chamber 4, Partition 18
An opening communication section B is formed by partitioning the front and rear by means of a transfer means 19 and a processing means 2 for taking in the object to be treated in the dust processing cylinder 8 via the opening communication section B and transferring it to the terminal side.
In the threshing device provided with 6, the inner side plate 20 partitioning the processing chamber 7 and the dust removal processing chamber 10 is provided so as to extend below the handling barrel 2 and is located below the handling barrel 2. Side plate 2
0, a plurality of dust guides 23 are provided on the side of the sorting wind feeding direction, and dust scavenging fins 25 for diffusing falling grain are provided on the swinging rack 11 in the sorting wind feeding direction. In this case, the starting end side of the dust-exhausting fins 25 is arranged at the falling portion of the grain removal between the plurality of dust-exhausting guides 23, 23 ... A threshing device, which is provided so as to overlap vertically.