JP7155069B2 - Threshing device - Google Patents

Description

The present invention relates to a threshing device.

The threshing apparatus includes, for example, as shown in Patent Document 1, a threshing chamber into which the tip side portion of the harvested grain culm is inserted, and a threshing chamber provided in the threshing chamber for threshing the tip side portion inserted in the threshing chamber. a threshing cylinder, a receiving net provided around the lower outer periphery of the threshing cylinder, a sorting chamber provided below the threshing chamber for sorting threshed grains and dust leaking from the threshing net, and the threshing chamber. and a threshing feed chain extending along the front-rear direction of the threshing chamber on the lateral side of the threshing chamber for holding and conveying the base portion of the reaping grain stalk toward the rear of the threshing chamber.

JP 2018-102152 A

In the above-mentioned threshing device, in the tip side portion located in the front part of the threshing chamber, there are still many grains and the culms are often entwined. On the front, long straws tend to occur. At the front of the handling chamber, if the long straw leaks from the receiving screen, the fine grain removed from the sorting chamber tends to be contaminated with the long straw. If straw waste is mixed in the fine grains, it becomes an obstacle to hulling, and it takes time to remove it.

The present invention provides a threshing apparatus in which grains are less likely to be mixed with straw waste.

The threshing device according to the invention comprises:
A threshing chamber into which the tip-side portion of harvested culms is inserted, a threshing drum provided in the threshing chamber for threshing the tip-side portion inserted into the threshing chamber, and a threshing drum provided on the lower outer periphery of the threshing drum. a receiving net, a sorting chamber provided below the threshing chamber for sorting threshed grains and dust leaking from the threshing chamber, and a threshing feed chain that extends to sandwich and convey the base side portion of the harvested grain culm toward the rear of the threshing chamber, wherein the threshing feed chain is provided at a portion of the threshing chamber corresponding to the front end portion of the threshing cylinder. On the side opposite to the feed chain side in the left-right direction and on the side opposite to the threshing feed chain side in the left-right direction from the center point of the receiving net in the circumferential direction of the threshing cylinder, a portion between the threshing cylinder and the receiving net is provided. A partition member is provided for partitioning the processing space formed between them and the sorting chamber.

According to this configuration, even if straw waste such as long cut straw is generated in the front part of the handling chamber, it is received by the partition member and hardly leaks into the sorting chamber, so that the fine grain is less likely to be mixed with straw waste.

In the present invention,
It is preferable that the rear end of the partition member is connected to the receiving net.

According to this configuration, when the straw waste flows from the partition member toward the rear of the handling chamber, it does not leak from between the partition member and the receiving net, so that the straw waste is less likely to leak into the sorting chamber.

In the present invention,
It is preferable that the receiving net is positioned on the upper side in the rotating direction of the handling cylinder with respect to the partition member.

According to this configuration, the grains obtained in the front part of the threshing chamber leak from the receiving net before flowing to the partition member, and the straw waste generated in the front part of the threshing chamber flows to the downstream side in the rotation direction of the threshing drum. Since the grains are received by the partition member, it is possible to prevent the grains from being retained and the waste straw to be prevented from leaking into the sorting chamber.

In the present invention,
It is preferable that the receiving net is positioned on the downstream side of the partition member in the rotating direction of the handling cylinder.

According to this configuration, when the grains received by the partition member flow from the partition member to the downstream side in the rotating direction of the handling drum, they flow out to the receiving net and leak from the receiving net, so that the grains are less likely to stay.

In the present invention,
It is preferable that the partition member has an arc shape along the arc shape of the receiving net.

According to this configuration, the threshing process by the threshing drum in the part where the partition member is located in the threshing chamber is similar to the threshing process in the part where the receiving net is located due to the arc shape along the arc shape of the receiving net of the partition member. Since the threshing process is carried out with high performance, the threshing process can be performed satisfactorily regardless of the existence of the partition member.

In the present invention,
The receiving net can be divided into an upper side receiving net portion located on the upper side in the rotation direction of the handling cylinder and a lower side receiving net portion located on the lower side in the rotation direction of the handling cylinder. It is suitable if it is integrally attached to the side net.

According to this configuration, the partition member can be assembled into the handling chamber together with the downstream receiving net portion, so that the assembly can be efficiently performed even though the partition member is provided.

In the present invention,
The trailing edge portion of the partition member and the front edge portion of the lower-side receiving net portion are adjacent to each other, and of the two lateral edge portions of the partition member in the rotating direction of the handling cylinder, the lateral edge portion on the upper side in the rotating direction of the handling cylinder. and a lateral edge on the lower side in the rotating direction of the handling cylinder, of both lateral edges in the rotating direction of the handling cylinder at the front end of the upper receiving net portion, are preferably adjacent to each other.

According to this configuration, when the straw waste generated in the front part of the upper side receiving net portion flows to the downstream side in the rotation direction of the threshing cylinder, it is received by the partition member, so that the waste waste can be prevented from leaking into the sorting chamber. When the grains received by the partition member flow toward the rear of the handling chamber, they appear in the lower side receiving screen portion and leak from the lower side receiving screen portion, so that the grains are less likely to stay.

In the present invention,
A truncated cone-shaped grain culm introduction portion having a smaller diameter toward the front end is provided at the front end portion of the threshing drum, and the partition member is provided at a portion of the threshing chamber corresponding to the grain culm introduction portion. It is preferable to have

According to this configuration, even if straw waste is generated as the tip side portion is introduced by the culm introduction portion, it is received by the partition member, so that it is difficult for the waste waste to leak into the treating chamber.

In the present invention,
It is preferable that the length of the partition member in the front-rear direction of the handling chamber is longer than the front-rear length of the grain stalk introduction portion.

According to this configuration, even if the straw waste generated in the grain culm introduction portion flows from the grain culm introduction portion toward the rear of the handling chamber, it is received by the partition member, so that the straw can be prevented from leaking into the sorting chamber.

It is a left view which shows the whole combine. It is a longitudinal side view which shows a threshing apparatus. It is a longitudinal front view showing a threshing device. It is a top view which shows a receiving net and a partition member. It is a perspective view which shows a partition member and the front part of a lower side receiving net part. FIG. 10 is a plan view of a partition member comprising another embodiment;

An embodiment, which is an example of the present invention, will be described below with reference to the drawings.
In the following description, regarding the running machine body of the combine, the direction of arrow F shown in FIG. , the direction toward the front side of the page is defined as "left side of the machine", and the direction toward the back side of the page is defined as "right side of the machine".

[Regarding the entire combine harvester]
As shown in FIG. 1, a traveling body of a combine harvester includes a body frame 1 configured by connecting a plurality of steel materials such as square pipe materials. A pair of left and right crawler-type traveling devices 2 are provided on the lower part of the body frame 1 . A driving unit 3 is formed on the right side portion of the front portion of the traveling machine body. The driving unit 3 is provided with a cabin 3a that covers the boarding space. A reaping and conveying device 4 is provided on the front part of the traveling machine body so as to be able to move up and down. The reaping and conveying device 4 includes a reaping unit 4A that reaps the planted stalks of rice plants and wheat on a plurality of planting rows with a reaping device 6 while raising the planted grain culms of a plurality of planting rows with a lifting device 5, and the reaping grain harvested by the reaping unit 4A. It has a feeding/transporting section 4B that transports the culm backward. A threshing device 7 and a grain tank 8 are supported side by side on the rear part of the body frame 1 . The threshing device 7 is arranged behind the feeding/conveying section 4B, and the grain tank 8 is arranged behind the operation section 3 . In the threshing device 7, a threshing process is performed on the reaping grain culms transported by the supply transport part 4B, and a sorting process for sorting out threshed grains obtained by the threshing process and dust is performed. The grain tank 8 stores grains transported from the threshing device 7 . A grain discharging device 9 for taking out grains from the grain tank 8 is connected to the rear portion of the grain tank 8 .

[About threshing equipment]
In the description of the threshing device 7 and the threshing cylinder 11, the processing start side of the threshing device 7 and the threshing cylinder 11 [grain culm insertion side (the left side of the paper surface of FIG. 2)] is defined as "front", and the processing of the threshing device 7 and the threshing cylinder 11. The terminal end side [the discharged straw discharge side (the right side of the paper surface of FIG. 2)] is referred to as "rear".

The threshing device 7 has a threshing part 7A provided in the upper part of the threshing device 7 and a sorting part 7B provided in the lower part of the threshing device 7, as shown in FIG.

As shown in FIGS. 2 and 3, the threshing section 7A is provided with a threshing chamber 10 . The threshing chamber 10 is provided with a threshing barrel 11 for threshing the reaping grain culms. The threshing cylinder 11 is rotatable in a rotation direction Z indicated by an arrow in FIG. The handling cylinder 11 has a stalk introduction part 11A provided at the front end part 11F of the handling cylinder 11, and a stalk processing part 11B provided at a portion of the handling cylinder 11 on the rear side of the stalk introduction part 11A. is provided. 11 A of grain stalk introduction parts are formed in the shape of a truncated cone which becomes small diameter toward the front-end side. A plurality of straightening teeth 13 arranged at intervals in the circumferential direction of the stalk introduction part 11A are provided on the outer peripheral part of the stalk introduction part 11A. A plurality of treating teeth 14 are provided on the outer peripheral portion of the shaving portion 11B and are arranged in the circumferential direction of the shaving portion 11B and in the longitudinal direction of the shaving portion 11B. A receiving net 15 is provided around the lower outer periphery of the handling cylinder 11 . The handling chamber 10 is formed by a front wall portion 16 , a rear wall portion 17 , an upper lip plate 19 , a lower lip plate 20 , a top plate 21 and a receiving net 15 . An entrance 22 is formed in the front part of the hulling chamber 10 for inserting the tip side portion of the harvested grain culm into the hulling chamber 10 . A dust feed port 23 is formed in the rear part of the handling chamber 10 for discharging threshing discharged straw, straw scraps, etc. to the rear of the handling chamber 10. - 特許庁

As shown in FIG. 3, a treatment opening 24 is formed on the lateral side of the treatment chamber 10 by the upper lip plate 19 and the lower lip plate 20. As shown in FIG. The handling opening 24 is formed in a state extending in the front-rear direction of the handling chamber 10 . A threshing feed chain 25 is provided on the lateral side of the threshing chamber 10 on the side of the threshing opening so as to extend in the longitudinal direction of the threshing chamber 10 . As shown in FIGS. 3 and 4, a partition member 26 is provided at a portion 10a of the threshing chamber 10 which corresponds to the front end portion 11F of the threshing cylinder 11 and which is on the opposite side of the threshing feed chain side in the left-right direction. . A partition member 26 partitions the processing space formed between the handling cylinder 11 and the receiving net 15 and the sorting chamber 40 of the sorting section 7B. As shown in FIG. 3, the partition member 26 is formed in an arc shape along the arc shape of the receiving net 15, and the threshing process by the threshing cylinder 11 is performed at the portion of the threshing chamber 10 where the partition member 26 is positioned. is performed with the same threshing performance as the threshing process by the threshing cylinder 11 in the portion of the threshing chamber 10 where the receiving net 15 is located.

In the threshing section 7A, the root side portion of the harvested grain culms conveyed by the supply conveying section 4B is supplied to the threshing feed chain 25, and is pinched and conveyed toward the rear of the threshing chamber 10 by the threshing feed chain 25. As the stem side portion is pinched and conveyed, the tip side portion of the reaping grain culm is guided to the entrance 22 by the entrance bottom plate 27 (see FIG. 2) and is inserted into the handling chamber 10 through the entrance 22 . The tip-side portion inserted into the handling chamber 10 is combed backward by the trimming teeth 13 in the culm introducing portion 11A and introduced into the handling processing portion 11B. are threshed. In the stalk introduction part 11A and the tip side part of the front end part of the threshing processing part 11B, which receives raking and threshing, straw waste such as long cut straw tends to be generated. The threshing process is performed while the partition member 26 prevents the straw waste from leaking into the sorting chamber 40. - 特許庁The tip-side portion introduced into the threshing processing section 11B is transferred toward the rear of the threshing chamber 10 and threshed by the threshing teeth 14 and the receiving net 15. - 特許庁The threshed grain obtained by the threshing process leaks into the sorting chamber 40 through the processed material leakage hole of the receiving net 15 . Dust such as threshed waste straw and cut straw generated by the threshing process is discharged to the rear of the threshing chamber 10 through the dust inlet 23 . The grains mixed in the straw waste discharged from the handling chamber 10 are scraped out by the separating drum 28 (see FIG. 2), and the scraped grains drop into the sorting chamber 40 . The threshed straw discharged from the threshing chamber 10 is supplied to the discharged straw conveying device 29 by the threshing feed chain 25 and conveyed rearward by the discharged straw conveying device 29 . When the discharged straw input port 31 of the discharged straw shredding device 30 provided at the rear part of the threshing device 7 is opened, the discharged threshing straw is dropped from the discharged straw conveying device 29 into the discharged straw input port 31, and the threshing is discharged. The straw is shredded in the culm direction by the discharged straw shredding device 30 and discharged to the field. When the discharged straw input port 31 of the discharged straw shredding device 30 is closed by the lid 32, the discharged threshed straw is dropped from the discharged straw conveying device 29 onto the lid 32, and the discharged threshed straw is pushed by the lid 32. The straw is guided to fall behind the waste straw shredding device 30 and discharged behind the traveling body in the form of long straw.

As shown in FIG. 2, the sorting section 7B is provided with a sorting chamber 40 provided below the receiving net 15. As shown in FIG. The sorting chamber 40 is provided with an oscillating sorting device 41 for receiving threshed materials such as grains that have fallen from the processed material leakage holes of the receiving net 15 and sorting the received grains and dust. The rocking sorting device 41 can be rocked by a drive mechanism 42 provided at the rear of the rocking sorting device 41 . The rocking sorting device 41 is equipped with a grain pan 43 , a chaff sieve 44 , a grain sieve 45 and a straw rack 46 . A winnow 47 is provided below the front end portion of the swing sorting device 41 . A first blower 48 is provided in front of the winnow 47 . A second blower 49 is provided behind the winnow 47 . The winnow 47 supplies sorting air that passes through the grain sieve 45 , the chaff sieve 44 and the straw rack 46 from the bottom to the top and goes upward to the rear of the sorting chamber 40 . The first air blower 48 supplies sorting air directed from the lower front of the chaff sieve 44 to the upper rear of the swing sorting device 41 . The second air blower 49 supplies the sorting air that passes through the straw rack 46 from the bottom to the top and goes rearward and upward of the rocking sorting device 41 .

The refined grains among the grains sorted by the rocking sorting device 41 flow down to the No. 1 screw 50 provided below the middle part of the rocking sorting device 41, and the No. 1 screw 50 moves them to the side of the threshing device 7. transported to the outside. The refined grains conveyed by the No. 1 screw 50 are supplied to the grain tank 8 by the grain raising device 51 connected to the conveying end of the No. 1 screw 50 . Unprocessed grains out of the grains sorted by the rocking sorting device 41 flow down to the second screw 52 provided below the rear part of the rocking sorting device 41, and are moved to the side of the threshing device 7 by the second screw 52. transported to the outside. The sorting air supplied by the second blower 49 passes above the No. 2 screw 52 . The unprocessed grains conveyed by the No. 2 screw 52 are returned to the starting end of the oscillating screening device 41 by the reducing device 53 connected to the conveying end of the No. 2 screw 52 . The dust sorted by the swing sorting device 41 is sucked by the dust exhaust fan 33 together with the sorting wind, and discharged from the dust exhaust fan 33 to the outside of the threshing device 7 .

[Regarding the partition member]
As shown in FIGS. 3 and 4, the partition member 26 is provided at a portion 10a of the threshing chamber 10 which corresponds to the front end portion 11F of the threshing cylinder 11 and which is on the side opposite to the threshing feed chain side in the left-right direction. there is The partition member 26 partitions the processing space formed between the handling cylinder 11 and the receiving net 15 and the sorting chamber 40 . Straw waste such as long straw waste is generated in the tip side portion which is rake-processed and threshed by the front end portions of the culm introducing portion 11A of the threshing drum 11 and the front end portion of the threshing processing portion 11B of the threshing drum 11. However, the generated straw waste is caught by the partition member 26 and hardly leaks into the handling chamber 10.例文帳に追加

As shown in FIG. 4, the rear end 26R of the partition member 26 is connected to the receiving net 15. As shown in FIG. Even if straw waste flows from the partition member 26 toward the rear of the handling chamber 10, it does not leak from between the partition member 26 and the receiving net 15.例文帳に追加A receiving net 15 is arranged on the upper side of the partition member 26 in the rotating direction of the handling cylinder. The grain obtained in the front part of the handling chamber 10 leaks from the receiving net 15 before it flows to the partition member 26, and the straw waste generated in the front part of the handling chamber 10 flows from the generation point to the downstream side in the rotation direction of the handling drum. and received by the partition member 26 .

Specifically, as shown in FIGS. 3 and 4, a dividing line Y extending in the front-rear direction of the receiving net 15 is set in the intermediate portion of the receiving net 15 in the left-right direction. The receiving net 15 can be divided by a dividing line Y into an upper receiving net portion 15A located on the upper side in the rotating direction of the handling cylinder and a lower receiving net portion 15B located on the lower side in the rotating direction of the handling cylinder. A member 54 shown in FIG. 4 is a connecting member that connects the front end portion of the upper side receiving net portion 15A and the front wall portion 16 .

The partition member 26 has a first partition portion 26A and a second partition portion 26B provided between the front end portion of the first partition portion 26A and the front wall portion 16, as shown in FIGS. is doing.
The first partition portion 26A includes a main body portion 55 formed of a plate member, a front frame portion 56 connected to the front portion of the main body portion 55, and both lateral edge portions of the main body portion 55 in the rotation direction of the drum. It has a lateral frame portion 57 . The body portion 55 and the front frame portion 56 are connected by welding. The left and right horizontal frame portions 57 and the body portion 55 are connected by welding. The second partition portion 26B is detachably connected to the front wall portion 16 by connecting bolts. The front frame portion 56 and the second partition portion 26B are detachably connected by supporting the front frame portion 56 on the support rail portions 34 of the second partition portion 26B. A reinforcing plate 58 is provided at the rear end portion of the body portion 55 . The reinforcing plate 58 and the body portion 55 are connected by welding. Reinforcing rods 59 are provided at two locations in the left-right direction on the back side of the body portion 55 . Each reinforcing rod 59 is connected to the front frame portion 56 and the reinforcing plate 58 . The reinforcing rod 59 and the front frame portion 56 are connected by welding. The reinforcing rod 59 and the reinforcing plate 58 are connected by welding.

The left and right horizontal frame portions 57 are formed integrally with the horizontal frame portion 60 of the lower net receiving net portion 15B, and the reinforcing plate 58 and the frontmost horizontal beam 61 of the lower net receiving net portion 15B are connected by welding to form a partition. The member 26 is integrally attached to the downstream side receiving net portion 15B. The second partition portion 26B is supported by the front wall portion 16 via connecting bolts, and the partition member 26 is supported by the front wall portion 16 and the lower side receiving net portion 15B. In a state in which the partition member 26, the lower-side receiving net portion 15B, and the upper-side receiving net portion 15A are incorporated in the threshing device 7, the reinforcing plate 58 as the rear edge portion of the partition member 26 and the front edge of the lower-side receiving net portion 15B The horizontal frame portion 57 on the upper side in the rotation direction of the threshing cylinder, of the two horizontal frame portions 57 as both lateral edge portions of the partition member 26 in the rotation direction of the threshing cylinder, Of both horizontal frame portions 62 as both lateral edge portions in the rotating direction of the handling cylinder at the front end portion of the upper side net receiving net portion 15A, the lateral frame portion 62 on the lower side in the rotating direction of the handling cylinder is adjacent to each other. The grain obtained in the front part of the handling chamber 10 leaks from the upper side net receiving part 15A until it flows to the partition member 26, and the straw waste generated in the front part of the handling chamber 10 flows to the lower side in the rotation direction of the handling drum. and is received by the partition member 26 . When the grains received by the partition member 26 flow toward the rear of the handling chamber 10, they leak from the downstream receiving net portion 15B.

As shown in FIG. 4, the partition member 26 corresponds to a portion of the handling chamber 10 corresponding to the stalk introduction portion 11A with a second partition portion 26B. The length L1 of the partition member 26 in the longitudinal direction of the chamber is set longer than the longitudinal length L2 of the culm introduction portion 11A. The partition member 26 prevents the straw scraps from leaking into the sorting chamber 40 at a portion of the handling chamber 10 corresponding to the front end portion 11F of the handling cylinder 11 .

[Another embodiment]
(1) FIG. 6 is a plan view showing a partition member 26 provided with another embodiment. In the partition member 26 having another embodiment, the receiving net 15 is positioned on the downstream side of the partition member 26 in the rotation direction of the handling cylinder. Specifically, the front side portion of the downstream side receiving net portion 15B is located on the downstream side of the partition member 26 in the rotation direction of the handling cylinder.

(2) In the above-described embodiment, an example in which the partition member 26 is integrally attached to the lower-side receiving net portion 15B is shown, but the present invention is not limited to this. For example, the partition member 26 and the receiving net 15 may be separable. In addition, a partition member is detachably supported in a portion of the receiving net 15 having the horizontal beams and the vertical beams, and the state of the receiving net 15 is changed between a state with the partition member 26 attached and a state without the partition member 26 attached. may be configured as possible.

(3) In the above-described embodiment, the example in which the partition member 26 is configured by the first partition portion 16A and the second partition portion 16B is shown, but the present invention is not limited to this. For example, the entire partition member may be composed of a single member, or may be composed of three or more partitions.

(4) In the above-described embodiment, the receiving net 15 is configured to be divisible into the upstream receiving net part 15A and the downstream receiving net part 15B. good too.

(5) In the embodiment described above, an example in which the partition member 26 is formed in an arc shape along the arc shape of the receiving net 15 is shown, but the present invention is not limited to this. For example, it may have a multi-stage folded shape in which it is folded at a plurality of locations in the circumferential direction of the threshing drum.

The present invention relates to a threshing chamber into which the tip side portion of harvested culms is inserted, a threshing drum for threshing the tip side portion inserted in the threshing chamber, a receiving net provided around the lower outer periphery of the threshing drum, and a receiving net. The present invention can be applied to a threshing apparatus provided with a sorting chamber for sorting out leaked threshed grains and dust, and a threshing feed chain for pinching and conveying the stem side portion of the harvested grain culm toward the rear of the threshing chamber.

10 Handling chamber 11 Handling drum 11A Grain culm introduction part 15 Receiving net 15A Upper side receiving net part 15B Lower side receiving net part 25 Threshing feed chain 26 Partition member 26R Rear end part 40 Sorting chamber 57 Horizontal edge part (horizontal frame part)
58 trailing edge (reinforcing plate)
61 Front edge (strut)
62 lateral edge (horizontal frame)
L1 Length of partition member L2 Length of culm introduction part

Claims (9)

a handling chamber into which the tip side portion of the reaping grain culm is inserted;
a threshing cylinder provided in the threshing chamber for threshing the tip side portion inserted into the threshing chamber;
a receiving net provided around the lower outer periphery of the handling cylinder;
a sorting chamber provided below the handling chamber for sorting threshed grains and dust leaked from the receiving net;
a threshing feed chain that extends along the front-rear direction of the threshing chamber on a lateral side of the threshing chamber, and nips and conveys the base side portion of the harvested grain culm toward the rear of the threshing chamber;
A side of the threshing feed chain side opposite to the threshing feed chain side in the left-right direction at a location corresponding to the front end portion of the threshing cylinder in the threshing chamber, and a side of the threshing feed chain side of the center point of the receiving net in the circumferential direction of the threshing cylinder. A threshing device provided with a partition member for partitioning a processing space formed between the threshing cylinder and the receiving net and the sorting chamber at a portion on the opposite side in the left-right direction . The threshing device according to claim 1, wherein the rear end of said partition member is connected to said receiving net. 3. The threshing apparatus according to claim 1 or 2, wherein the receiving net is positioned on the upper side in the rotation direction of the threshing cylinder with respect to the partition member. 4. The threshing apparatus according to any one of claims 1 to 3, wherein the receiving net is positioned downstream of the partition member in the rotation direction of the threshing drum. The threshing device according to any one of claims 1 to 4, wherein the partition member has an arc shape along the arc shape of the receiving net. The receiving net can be divided into an upper side receiving net part located on the upper side in the rotation direction of the handling cylinder and a lower side receiving net part located on the lower side in the rotation direction of the handling cylinder,
The threshing device according to any one of claims 1 to 5, wherein the partition member is integrally attached to the downstream receiving net portion. the trailing edge of the partition member and the front edge of the downstream receiving screen portion are adjacent to each other,
Of the two lateral edges of the partition member in the rotation direction of the handling cylinder, the upper side edge in the rotation direction of the handling cylinder and the front end of the upper receiving net part of the both lateral edges in the rotation direction of the handling cylinder 7. The threshing apparatus according to claim 6, wherein the threshing device is adjacent to the lateral edge on the downstream side in the rotation direction of the threshing drum. A truncated cone-shaped grain stalk introduction part having a smaller diameter toward the front end is provided at the front end of the handling drum,
The threshing apparatus according to any one of claims 1 to 7, wherein the partition member is provided at a portion of the threshing chamber corresponding to the stalk introduction portion. The threshing device according to claim 8, wherein the length of the partition member in the front-rear direction of the threshing chamber is longer than the front-rear length of the stalk introduction portion.

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