JP6338514B2 - Combine - Google Patents

Description

  The present invention is provided with a combine, in particular, a harvesting unit that harvests the planted cereal cocoon, and a threshing device that threshs the harvested sorghum from the reaping unit. A handling chamber to be supplied, a handling cylinder that acts on the tip side supplied to the handling chamber, a drainage outlet formed at a rear portion of the threshing device, and a long straw state discharged from the handling chamber The present invention relates to a combine provided with a waste straw conveying path that conveys the threshing waste straw in a horizontal posture toward the waste straw discharge port.

  Conventionally, for example, as shown in Patent Document 1, there has been a combine equipped with a cabbage recovery device. The saddle picking device includes a first wheel connected to the rear end portion of the barrel, a second wheel provided with a predetermined stroke with respect to the first wheel, a first wheel, A chain with a protrusion wound around the second ring body is provided. The protrusion of the chain with the protrusion that is rotationally driven by the first ring body is configured to act from above on the drainer that is conveyed by the feed chain.

JP-A-9-191758

  In the conventional case, not only a chain with a protrusion is required, but also a driving structure for rotationally driving the chain with a protrusion is required.

  The objective of this invention is providing the combine which can collect | recover the cabbage of threshing waste straw by a simple collection | recovery structure.

In the combine according to the present invention,
A reaping part for reaping the planted cereal cocoon, and a threshing device for threshing the cereal cereal from the reaping part,
To the threshing device, a handling chamber to which the tip side of the harvested cereal cocoon is supplied, a handling cylinder that acts on the tip side supplied to the handling chamber, and a drain outlet formed at the rear of the threshing device, A waste straw conveying path that conveys the threshing waste straw in a long straw state discharged from the handling chamber in a horizontal posture toward the waste straw discharge port, and a threshing processed product supplied from the handling chamber as grains and dust Swaying and sorting device for sorting and processing, a tang that supplies sorting air to the swaying and sorting device, and a state that extends to the left and right of the threshing device below the waste straw conveying path, and sucks the sorting wind And a dust exhaust fan device that discharges to the outside of the threshing device, and a blower mechanism that applies wind to the threshing drainer that is moving along the waste straw transporting path from above the waste straw transporting path,
The dust exhaust fan device includes a rotating fan and a fan case that covers the rotating fan,
The blower mechanism includes an introduction part that is provided in the fan case and introduces wind from the dust exhaust fan device, and a blower path that connects the introduction part to a discharge port.
A chute that is provided above the dust exhaust fan device and guides the soot blown off from the waste straw transporting path by the air blowing mechanism to the swing sorting device,
The discharge port discharges air toward the chute from above the waste straw conveying path.

According to this configuration, since the small rice bran of the threshing drainer is blown off from the threshing drainer by the wind that hits the threshing drainer from above, the threshing drainer is compared with the conventional recovery device that can rotate the chain with a protrusion. By using a simple collection structure that only includes a blower mechanism that applies wind to the straw, the salmon can be collected.
According to this configuration, since the dust exhaust fan device is used as the air source of the air blowing mechanism, a special air source for the air blowing mechanism can be omitted. In addition to the dust exhaust fan device, a small air source that only adds wind to the wind from the dust exhaust fan device may be adopted even when an air source for the air blowing mechanism is provided.
According to this configuration, since the wind is introduced from the fan case that guides the wind generated by the rotation of the rotary fan, a required amount of wind can be accurately introduced into the blower mechanism.

  Therefore, it is possible to suppress or avoid the grain loss that is caused when the grain is attached to the threshing waste straw and discharged at low cost.

  In this invention, the said introduction part is toward the horizontal end of the said fan case in the side where the stock origin of the threshing waste straw which moves the said waste straw conveying path with respect to the center in the width direction of the said threshing apparatus is located. It is preferable that it is biased.

  According to this configuration, from the portion of the fan case that is biased toward the lateral end on the side where the stock source of the threshing waste straw that moves the waste straw conveying path with respect to the center in the width direction of the threshing device is located. Wind will be introduced. In the oscillating sorting apparatus, the sorting wind tends to flow more easily on the lateral end side corresponding to the stock source side of the threshing waste straw than on the lateral end side corresponding to the tip side of the threshing waste straw due to the distribution of the sorting processed product. Therefore, a required amount of wind can be efficiently introduced into the blower mechanism.

  In the present invention, there is provided a waste straw conveying device that conveys the threshing waste straw along the waste straw conveying path by the stock source transport unit and the tip transport unit, and the discharge port includes the stock transport unit and the tip transport. It is preferable to be located above the part.

  In this invention, the pipe-shaped threshing frame which comprises the upper part side of the threshing machine body of the said threshing apparatus is provided, The said ventilation mechanism is the discharge side air path branched from the middle of the said threshing frame and the said threshing frame. It is preferable to be configured.

According to this structure, since a threshing frame is utilized for the member which comprises the ventilation path of a ventilation mechanism, the member for exclusive use for comprising a ventilation mechanism can be decreased, and a ventilation mechanism can be obtained cheaply.
In the present invention, there is provided a waste straw transporting device that transports the threshing waste straw along the waste straw transporting path by the stock transporting unit and the tip transporting unit, and the threshing frame is arranged from the rear part of the threshing device to the waste straws. A lower front-rear facing frame part extending rearward of the threshing device below the stocker side part of the conveyance path, and the upper part of the stocker side part bypassing the stocker side part from the extended end of the lower front-rear facing frame part A U-shaped frame portion that rises up, an upper-front-rear-facing frame portion that extends from the upper end of the U-shaped frame portion to the rear side of the handling chamber in the forward direction of the threshing device, and the upper front-rear direction. A laterally extending frame portion extending laterally from the threshing feed chain side to the side opposite to the threshing feed chain side from the extended end portion of the orientation frame portion to the top plate portion of the threshing device, and the discharge side Air path above Branches toward the opposite side of the threshing feed chain side from the middle of the front and rear direction frame portion, wherein the front Kikabu original conveying portion passes between the top plate portion of the threshing device and the strain based on the transport unit tip transporting section It is preferable to reach the upper part between the two.

It is a side view which shows the whole combine. It is a vertical side view which shows a threshing apparatus. It is a rear view which shows a cabbage recovery structure. It is a top view which shows a cabbage recovery structure. It is a side view which shows the cabbage recovery structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the entire combine according to the embodiment of the present invention. As shown in FIG. 1, the combine includes a traveling machine body equipped with a pair of left and right crawler traveling devices 2 at the lower part of the machine body frame 1. A driving unit 3 is provided at a portion on the side of the lateral end in the front portion of the traveling machine body. The driving unit 3 is provided with a cabin 3a that covers the living space. The cutting part 4 is connected to a portion on the other lateral side in the front part of the traveling machine body. The cutting part frame 4a of the cutting part 4 is extended from the traveling machine body so as to be swingable up and down. By swinging the reaping portion frame 4a with the lifting cylinder 5, the reaping portion 4 can be lifted and lowered between the lowered working posture and the raised non-working posture. A threshing device 6 and a grain tank 7 are provided at the rear part of the traveling machine body. The threshing device 6 is located on the rear side of the cutting unit 4, and the grain tank 7 is located on the rear side of the driving unit 3. The grain tank 7 is equipped with an auger 8. A waste straw treatment device 9 is connected to the rear portion of the threshing device 6. An engine E is provided below the operation unit 3. The output of the engine E is transmitted to the crawler traveling device 2, the reaping unit 4, the threshing device 6, and the waste straw processing device 9.

  The combine performs the harvesting work of rice, wheat, etc. by running the traveling machine body with the cutting unit 4 in the lowered working posture. In other words, the planting culm positioned in front of the traveling machine body is divided into a planting culm to be harvested and a planting culm to be untrimmed by the mowing unit 4 in the descending working posture. The cereal stock is cut and the planted cereal is harvested. The harvested cereal meal is threshed by the threshing device 6. The grain obtained by the threshing device 6 is stored in the grain tank 7. The grain stored in the grain tank 7 can be carried out from the grain tank 7 by the auger 8. By switching the waste straw processing device 9 to the long straw discharge processing state, the threshing waste straw produced in the threshing device 6 is discharged from the waste straw processing device 9 to the rear of the traveling machine body in the long straw state. By switching the waste straw treatment device 9 to the shredded discharge processing state, the threshing waste straw produced in the threshing device 6 is shredded in the slimming direction by the waste straw treatment device 9 and discharged to the rear of the traveling machine body. The

The threshing device 6 will be described.
FIG. 2 is a longitudinal side view showing the threshing device 6. As shown in FIG. 2, the threshing apparatus 6 includes a threshing machine body 10. A handling chamber 20 is formed in the upper part of the inside of the threshing machine 10. A handling cylinder 21 is provided in the handling chamber 20 so as to be rotatable. A waste straw transport path 30 is provided behind the handling chamber 20. A sorting chamber 40 is formed from a portion below the handling chamber 20 in the threshing machine body 10 to a rear portion of the handling chamber 20. The sorting chamber 40 is provided with a swing sorting device 41, a red pepper 42, and a dust exhaust fan device 43. A threshing feed chain 22 is provided on the lateral outer side of the threshing machine body 10 so as to be capable of rotating. At the rear part of the threshing machine 10, a waste outlet 11 and a dust outlet 12 are formed.

  The tip side of the harvested grain from the harvesting unit 4 is supplied to the handling room 20 by the threshing feed chain 22 and threshed by the handling cylinder 21. A threshing product such as a grain is supplied from the handling chamber 20 to the sorting chamber 40, and the threshing waste straw is discharged backward from the handling chamber 20 by the threshing feed chain 22 in a long straw state.

  Specifically, the threshing machine body 10 is provided with a pair of left and right side walls 13, a front wall 14, a rear wall 15, and a top plate 16. The handling chamber 20 is formed by left and right side wall portions 13, a front wall portion 14, a handling chamber rear wall portion 15, and a top plate portion 16. A receiving net 23 is provided in the lower part of the handling chamber 20. A supply port 24 is formed in the front portion of the handling chamber 20. A dust feed port 25 is formed at the rear of the handling chamber 20. A rotating spindle 21a of the handling cylinder 21 is rotatably supported by the front wall portion 14 and the handling chamber rear wall portion 15. A driving pulley 26 is provided at the front end portion of the rotation support shaft 21a so as not to be relatively rotatable. The driving pulley 26 is driven by driving force transmitted from the engine E. The handling cylinder 21 is rotationally driven by a driving pulley 26 about the axis of the rotation support shaft 21a extending in the front-rear direction of the threshing device 6.

  The stocker side of the harvested cereal meal is sandwiched by the threshing feed chain 22 and conveyed from the front side of the threshing device 6 to the rear of the handling chamber 20. Thereby, the tip side of the harvested cereal rice cake is supplied to the handling chamber 20 from the supply port 24. The tip side supplied to the handling chamber 20 is located between the receiving net 23 and the handling cylinder 21 and is handled by the handling cylinder 21 and the receiving net 23. When the stock side of the harvested cereal meal is transported by the threshing feed chain 22 and the tip side is transported by the handling cylinder 21, the tip side is transported toward the dust feed port 25 while being handled. Even after the tip side reaches the dust feed port 25, the stock side is conveyed by the threshing feed chain 22, so that the tip side of the threshing waste straw passes through the dust feed port 25 and is discharged to the rear of the handling chamber 20. Threshed products such as grains obtained by the threshing process fall into the sorting chamber 40 through the processed material leakage hole of the receiving net 23 and the dust feed port 25.

  Straw waste generated in the handling chamber 20 is discharged from the dust feeding port 25 to the rear of the handling chamber 20 together with the threshing waste straw. Straw waste discharged from the handling chamber 20 is received and supported by the sieve wire 27. The sieve wire 27 is supported by the swing sorting device 41. Unraveling claws of the processing cylinder 28 act on the straw scraps supported by the sieve wire 27, so that the straw scraps are unraveled. As the straw scraps are unwound, the grains mixed in the straw scraps come out of the straw scraps and fall on the swing sorting device 41.

  The threshing waste straw discharged from the handling chamber 20 is transported to the waste straw discharge port 11 in a horizontal posture by the waste straw transporting path 30, and is discharged from the waste straw discharge port 11 to the outside of the threshing device 6.

  More specifically, as shown in FIGS. 2, 3, and 4, the waste straw conveying device 31 is provided from a location above the conveyance termination portion in the threshing feed chain 22 to a location located behind the waste straw discharge port 11. Yes. The threshing waste straw discharged from the handling chamber 20 is delivered from the threshing feed chain 22 to the waste straw conveying device 31, and conveyed rearward along the waste straw conveying path 30 by the waste straw conveying device 31. It is transported to the transport end portion of the waste straw transport device 31 located behind the outlet 11.

  The waste straw conveying device 31 is provided with a stock conveying unit 32 and a tip conveying unit 33. The stock source transport unit 32 inherits the stock source side of the threshing waste straw discharged from the handling chamber 20 from the threshing feed chain 22 and sandwiches and transfers the inherited stock source side. The tip transport unit 33 accepts the tip side of the threshing waste straw discharged from the handling chamber 20, and latches and transports the received tip side.

The threshing processed product supplied to the sorting chamber 40 is sorted into grains and dust such as cut straws by the specific gravity sorting by the swing sorting device 41 and the wind sorting by the sorting wind from the Kara 42.
Of the sorted dust, small dust such as dust and a part of the sorted wind after the sorting process are sucked by the dust exhaust fan device 43 and discharged from the dust discharge port 12 to the outside behind the threshing device 6. The Of the selected dust, large dust such as broken straw is transported by a part of the sorting air after the sorting process and discharged from the dust outlet 12 to the outside of the threshing device 6 through the lower part of the dust fan device 43. Is done.

Specifically, the swing sorting device 41 is provided below the handling chamber 20 so as to be swingable.
The processed material dropped from the receiving net 23, the dust feeding port 25 and the sieve wire 27 is received by the swing sorting device 41. The swing sorting device 41 conveys the received processed material rearward while sorting.

  The red pepper 42 is provided below the front end side of the swing sorting device 41. The Kara 42 supplies the sorting air toward the rear upper side of the sorting chamber 40. The sorting air from the tang 42 flows through the swing sorting device 41 from below to above.

  The dust exhaust fan device 43 is provided above the rear end side of the swing sorting device 41 and below the exhaust straw transport path 30. The dust exhaust fan device 43 includes a rotary fan 43a and a fan case 43b. The rotary fan 43a is driven to rotate about an axis extending in the lateral width direction of the threshing device 6. The fan case 43b covers the upper side of the rotary fan 43a.

  The sorting air that has come out of the swing sorting device 41 upward from the bottom and has come to the front of the dust exhaust fan device 43 is sucked into the inner surface side of the fan case 43b by the suction action and the air blowing action due to the rotation of the rotary fan 43a. It is sent to the dust discharge port 12 along the case 43b, and is discharged from the dust discharge port 12 to the outside behind the threshing device 6.

  Of the selected grains, the fresh grains fall from the swing sorting device 41 and are supplied to the first screw conveyor 44. The first screw conveyor 44 carries out the supplied fresh grains from the threshing device 6 toward the grain tank 7. Unprocessed grains among the selected grains fall from the swing sorting device 41 and are supplied to the second screw conveyor 45. The second screw conveyor 45 conveys the supplied untreated grains toward the handling chamber 20 so as to be reprocessed in the handling chamber 20.

  FIG. 3 is a rear view showing the cabbage recovery structure. FIG. 4 is a plan view showing the cabbage recovery structure. FIG. 5 is a side view showing the cabbage recovery structure. As shown in FIGS. 3, 4, and 5, a discharge port 51 of the blower mechanism 50 is provided above the waste straw conveying path 30. When the threshing waste straw has a small rice cake, the small rice cake can be collected by the swing sorting device 41 by the wind from the blower mechanism 50.

  That is, wind is applied from above to the threshing waste straw moving on the waste straw conveying path 30 by the blower mechanism 50, and the cabbage is blown off from the threshing waste straw by the wind. The soot that has been blown down falls on the chute 55 and descends from the chute 55 to the fan case 43b, slides on the fan case 43b to the front end of the fan case 43b, and falls from the front end to the swing sorting device 41. .

Specifically, the air blowing mechanism 50 is configured as shown in FIGS.
The air blowing mechanism 50 includes an introduction unit 52 that introduces wind from the dust exhaust fan device 43, and an air passage 53 that connects the introduction unit 52 to the discharge port 51 and supplies the air introduced by the introduction unit 52 to the discharge port 51. It has.

Specifically, the introduction part 52 is configured as follows.
The introduction part 52 is provided in the fan case 43b. More specifically, the introduction part 52 is mounted in the mounting hole 54 penetrating the fan case 43b. The introduction port 52a of the introduction part 52 enters the air path on the inner surface side of the fan case 43b. The shape of the introduction port 52a in a direction view along the rotation axis of the rotary fan 43a is a shape in which an arc portion 43d along the outer peripheral edge of the rotary fan 43a in the fan case 43b is extended toward the dust discharge port 12. Is formed. Wind that flows toward the dust outlet 12 along the inner surface of the fan case 43b flows into the inlet 52a by the rotation of the rotary fan 43a. Thereby, the wind can be introduced from the dust exhaust fan device 43 to the introduction part 52.

  The introduction part 52 is biased toward the lateral end 43t with respect to the center 43c in the lateral width direction of the threshing device 6 in the fan case 43b. The horizontal end 43t is the horizontal end corresponding to the side where the stock source of the threshing waste straw moving in the waste straw conveying path 30 is located. In the oscillating sorting apparatus 41, the sorting wind tends to flow more easily on the lateral end side corresponding to the stock source side of the threshing drainer than on the lateral end side corresponding to the tip side of the threshing drainer due to the distribution of the sorting processed product. It is in. Thereby, a wind can be introduce | transduced into the introducing | transducing part 52 from the side end side part from which more winds of the fan cases 43b flow.

  A partition plate located near the introduction port 52a may be erected on the inner surface side of the fan case 43b. In this case, the wind can be guided by the partition plate so as to easily flow into the introduction port 52 a, and the wind can be efficiently introduced into the introduction portion 52.

The air passage 53 is disposed so as to pass between the waste straw conveying device 31 and the top plate portion 16.
More specifically, the discharge port 51 is located above the portion of the waste straw transport path 30 between the stock transport part 32 and the tip transport part 33 of the waste straw transport device 31. The air passage 53 passes between the stock transporter 32 of the waste straw transporter 31 and the top plate 16.

  The blower mechanism 50 is configured by a pipe-shaped threshing frame 60 that constitutes the upper side of the threshing machine body 10.

  Specifically, as shown in FIGS. 3, 4, and 5, one end side of the threshing frame 60 is connected to a lower portion 10 a located below the waste straw transporting path 30 in the upper side of the threshing machine 10. . Specifically, one end side of the threshing frame 60 and the rear wall portion of the lower portion 10a are connected. The other end side of the threshing frame 60 is connected to an upper portion 10 b located above the waste straw conveying device 31 in the upper side of the threshing machine 10. More specifically, the other end side of the threshing frame 60 and the upper frame 10 c constituting the upper portion 10 b are connected via a connecting member 62. The threshing frame 60 supports the upper part 10b of the threshing machine body 10 by using the lower part 10a of the threshing machine body 10 as a reaction member. A U-shaped frame portion 61 on one end side of the threshing frame 60 protrudes rearward from the rear end on the upper side in the threshing machine body 10. In the threshing frame 60, the U-shaped frame portion 61 bypasses the stocker side portion of the waste straw conveying path 30.

  The air passage 53 includes a fan-side air passage 53 a that connects the introduction portion 52 to a portion of the U-shaped frame portion 61 that is positioned below the exhaust wall conveying path 30, and the U-shaped frame portion 61. Of the U-shaped frame portion 61, a portion connected to the fan-side air passage 53 a and a discharge-side air passage 53 b of the U-shaped frame portion 61 are connected to a portion located above the waste wall conveying device 31. It is provided with the part located between the site | parts which connect. A portion of the air passage 53 between the fan side air passage 53a and the discharge side air passage 53b is constituted by a U-shaped frame portion 61. The fan side air passage 53a and the discharge side air passage 53b are made of pipe material.

  The wind introduced from the dust exhaust fan device 43 by the introduction part 52 flows into the threshing frame 60 through the fan side air passage 53 a, flows into the discharge side air passage 53 b from the threshing frame 60, and flows out from the discharge port 51. That is, the blower mechanism 50 uses the dust exhaust fan device 43 as a blow source, introduces wind from the dust exhaust fan device 43 by the introduction unit 52, and discharges the introduced wind by the blow passage 53 configured by the threshing frame 60. To the threshing waste straw from the discharge port 51.

[Another Example]
(1) In the above-described embodiment, an example in which the dust exhaust fan device 43 is used as a blower source of the blower mechanism 50 has been shown, but a dedicated fan device for the blower mechanism may be provided.

(2) In the above-described embodiment, the lateral end on the side where the stocker side of the threshing waste straw passing through the waste straw conveying path 30 with respect to the center in the lateral width direction of the threshing device 6 is located in the fan case 43b of the introduction part 52. Although the example which is biased toward the direction has been shown, the introduction portion 52 may be provided in any part of the fan case 43b such as the central part in addition to such a part.

(3) In the above-described embodiment, the example in which the introduction portion 52 is provided in the fan case 43b in a state where the introduction port 52a enters the air path inside the fan case 43b is shown. The introduction portion 52 may be provided on the outer surface side of the fan case 43b, and the introduction port 52a of the introduction portion 52 may be configured to communicate with the air path inside the fan case 43b through the vent hole of the fan case 43b. .

(4) In the above-described embodiment, the example in which the threshing frame 60 is used for the air passage 53 is shown. However, the threshing frame 60 is not used, and a dedicated pipe material or hose constituting the air passage is employed. May be.

(5) In the above-described embodiment, an example in which the fan-side air passage 53a and the discharge-side air passage 53b are made of a pipe material is shown, but it may be made of a hose.

(6) In the above-described embodiment, an example in which the waste straw transporting device 31 is provided with the tip transport unit 33 is shown. However, instead of the tip transport unit 33, the tip side is received and supported from below, and the tip is supported. You may employ | adopt the tip conveyance guide which slides the side.

(7) In the above-described embodiment, the example in which the waste straw processing apparatus 9 is provided has been described. However, the waste straw processing apparatus 9 may be provided without being provided.

(8) In the above-described embodiment, an example in which only the Chinese potato 42 is provided has been described. However, in addition to the Chinese potato 42, a fan device that supplies sorting air such as a secondary Chinese potato may be provided.

  The present invention can be applied not only to a combine in which the front-rear direction of the threshing device 6 is the front-rear direction of the traveling machine body but also to a combine in which the front-rear direction of the threshing device 6 is the lateral direction of the traveling machine body.

DESCRIPTION OF SYMBOLS 4 Mowing part 6 Threshing apparatus 10 Threshing machine body 11 Drainer outlet 16 Top plate part 20 Handling room 21 Handling cylinder 30 Drainer conveying path 31 Drainer conveying apparatus 32 Stock former conveying part 33 Ear tip conveying part 41 Oscillating sorting apparatus 42 43 Dust exhaust fan device 43a Rotating fan 43c Center 43t Horizontal end 50 Blower mechanism 51 Discharge port 52 Introduction part 53 Blower passage 53b Discharge side air passage 55 Chute 60 Threshing frame

Claims (5)

A reaping part for reaping the planted cereal cocoon, and a threshing device for threshing the cereal cereal from the reaping part,
To the threshing device, a handling chamber to which the tip side of the harvested cereal cocoon is supplied, a handling cylinder that acts on the tip side supplied to the handling chamber, and a drain outlet formed at the rear of the threshing device, A waste straw conveying path that conveys the threshing waste straw in a long straw state discharged from the handling chamber in a horizontal posture toward the waste straw discharge port, and a threshing processed product supplied from the handling chamber as grains and dust Swaying and sorting device for sorting and processing, a tang that supplies sorting air to the swaying and sorting device, and a state that extends to the left and right of the threshing device below the waste straw conveying path, and sucks the sorting wind And a dust exhaust fan device that discharges to the outside of the threshing device, and a blower mechanism that applies wind to the threshing drainer that is moving along the waste straw transporting path from above the waste straw transporting path,
The dust exhaust fan device includes a rotating fan and a fan case that covers the rotating fan,
The blower mechanism includes an introduction part that is provided in the fan case and introduces wind from the dust exhaust fan device, and a blower path that connects the introduction part to a discharge port.
A chute that is provided above the dust exhaust fan device and guides the soot blown off from the waste straw transporting path by the air blowing mechanism to the swing sorting device,
The discharge port is a combine that discharges wind toward the chute from above the waste straw conveying path.   The introduction portion is biased toward the lateral end of the fan case on the side where the stock source of the threshing waste straw moving along the waste straw conveying path is located with respect to the center in the lateral width direction of the threshing device. The combine according to claim 1. A waste wall conveying device is provided that conveys the threshing waste straw along the waste straw conveying path by the stock source conveying unit and the tip conveying unit,
The combine according to claim 1 or 2, wherein the discharge port is located above between the stock transport unit and the tip transport unit. A pipe-shaped threshing frame constituting the upper side of the threshing machine body of the threshing device is provided,
The combine as described in any one of Claim 1 to 3 with which the said ventilation mechanism is comprised by the discharge side air path branched from the middle of the said threshing frame and the threshing frame. A waste wall conveying device is provided that conveys the threshing waste straw along the waste straw conveying path by the stock source conveying unit and the tip conveying unit,
The threshing frame includes a lower front-rear facing frame part extending downward from the rear side of the stocker side of the waste straw conveying path from the rear part of the threshing apparatus, and an extended end of the lower front-rear facing frame part. A U-shaped frame part that bypasses the former part and rises above the former part, and the upper part of the U-shaped frame part extends upward from the upper part of the U-shaped part toward the front of the threshing device. A threshing device that extends to the rear side and that extends between the upper and rearwardly facing frame portion from the extended end portion of the upper and rearward facing frame portion to the side opposite to the threshing feed chain between the waste straw conveying device and the top plate portion of the threshing device A lateral frame portion extending laterally,
The discharge-side air passage is branched toward the opposite side of the threshing feed chain side from the middle of the upper front and rear direction frame portion, before passing between the top plate portion of the threshing device and the strain based on the transport unit's rating The combine of Claim 4 which has reached the upper direction between a stock former conveyance part and the said tip conveyance part.

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