KR101131821B1 - Threshing machine - Google Patents

Abstract

[PROBLEMS] To improve the sorting precision, threshing efficiency, and grain recovery rate by providing the function of recovering the grains in the discharge straw after threshing, and controlling the blowing amount and the blowing direction of the sorting wind.
[Solution] The partition plate 11K is disposed in close proximity to the outer periphery of the rear part of the barrel 10 in the threshing chamber 11, and in the recovery chamber 11F formed on the rear side of the partition plate 11K. On the outer circumferential surface of the barrel 10, a separation tooth 10b for separating the grains into the discharge straw after threshing is provided, and threshing is carried out at a portion along the lower outer periphery of the barrel 10 in the recovery chamber 11F. A supporting member 10c is installed to support the later discharge straw and guide it to the action zone of the separating teeth 10b. Moreover, the blowing direction of the sorting wind from the tuyere 16 can be adjusted up and down.

Description

Threshing Device {THRESHING MACHINE}

The present invention relates to a threshing apparatus included in a combine or the like.

As a threshing apparatus with a combine etc., as described in patent document 1, the rear part of a feeding chamber is divided back and forth by a partition plate, a recovery chamber is formed in the back side of this partition plate, and the barrel in this recovery chamber ( The technique of opening the lower side of i) is known. The tip of the grain is threshed while the bottom part of the grain stem is sandwiched and conveyed by the grain stem feed conveying apparatus, and the grains which have entered the ear tip of the discharge straw after threshing in the recovery chamber are separated and recovered.

In addition, as described in Patent Literature 2, in the tuyere of the tuyere, a wind direction guide member is provided between the upper wall and the lower wall, an upper air path is formed between the upper wall and the wind direction guide member, and between the wind direction guide member and the lower wall. The technique of forming a lower side air path is known. By rotating this wind direction guide member up and down, the blowing direction of the sorting wind from a wind hole is adjusted up and down.

Japanese Utility Model Publication No. 8-6435 Japanese Patent Laid-Open No. 7-274696

However, in the technique of the said patent document 1, since the support member is not provided in the lower side of the barrel in a collection chamber, the discharge straw after threshing conveyed by the grain stem supply conveying apparatus is hung down, and it becomes difficult to receive the action of a barrel. . For this reason, there exists a fault that the grain which contained this discharge straw and the grain with a sticking branch are discharged together with the discharge straw to the outside of a threshing apparatus, and the collection | recovery efficiency of a grain falls.

In addition, in the technique described in the patent document 2, although the wind direction of the upper air passage and the lower air passage can be changed, the opening area of the upper air passage and the lower air passage does not change, so the distribution ratio of the air volume in the upper air passage and the lower air passage does not change. Do not. For this reason, it is difficult to perform appropriate blowing on threshing conditions (processing amount, crop conditions, etc.) which are cartoonized only, and it is difficult to maintain high sorting performance.

Thus, the present invention prevents grains and grains attached to the discharge straw after threshing from being discharged together with the discharge straw to the outside of the threshing apparatus, and the upper and lower air passages at the tuyeres of the tuyere. It is an object to make it possible to adjust not only the direction of the wind but also the amount of air, thereby maintaining the high sorting performance, thereby increasing the recovery efficiency of the grain.

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, this invention takes the following technical means.

That is, in the invention described in claim 1, a barrel 10 having a plurality of barrel teeth 10a for threshing the grain stem is provided in the threshing chamber 11 and disposed below the threshing chamber 11. In the sorting room 18, a fluctuation sorting shelf 20 is provided, and the air flow rate adjustable airflow 16 for blowing the sorting wind at the lower side of the swing sorting shelf 20, and the first water collecting part for collecting the first water. In the threshing apparatus provided with 19A and the 2nd collection | recovery part 19B which collect | recovers the 2nd goods in this order from a front side, it partitions in the outer peripheral part of the rear part of the barrel 10 in the said threshing chamber 11. The plate 11K is disposed close to each other, and on the outer circumferential surface of the barrel 10 in the recovery chamber 11F formed on the rear side of the partition plate 11K, the grains contained in the discharge straw after threshing are separated from the discharge straw. The site | part which follows the lower outer periphery of the barrel 10 in the said recovery chamber 11F is provided in the separation tooth 10b. It was set as the threshing apparatus characterized by providing the support member 10c which supports the discharge straw after threshing and guides to the action area | region of the separating tooth 10b.

Invention of Claim 2 was made into the threshing apparatus of Claim 1 which set it as the structure which can adjust the blowing direction of the sorting wind from the said tuyere 16 up and down.

In the invention described in Claim 3, the sorting wind blown from the tuyere 16 is lower than the recovery chamber 11F of the swing sorting shelf 20 in a state in which the blowing direction of the sorting wind from the tuyere 16 is adjusted upward. It was set as the threshing apparatus of Claim 2 which set it as the structure spouting upwards from the site | part of the back side rather than the site | part facing.

The invention according to claim 4 is provided with the air vents 65 formed between the upper wall 67 and the lower wall 68 in the air vent 16, and the wind direction guide member 66 between the upper wall 67 and the lower wall 68. ), And the air vent 65 is divided into an upper air passage 74 and a lower air passage 75 by the wind direction guide member 66, and the upper wall 67 is rotated so that the rear side portion thereof moves up and down. It is axially supported, and the wind direction guide member 66 is rotatably supported so that the front side portion and the rear side portion are moved up and down in opposition, and the upper wall 67 and the wind direction guide member 66 are moved. It was set as the threshing apparatus of Claim 2 which provided the interlocking mechanism S which rotates by interlocking in the same direction.

Invention of Claim 5 is equipped with the layer thickness detection sensor 95 which detects the thickness of the layer of the processed object on the said rock | flux sorting shelf 20, and is based on the detection result of this layer thickness detecting sensor 95, When the thickness of the layer of the workpiece on the 20 increases, when the rear upward inclination angle of the wind direction guide member 66 and the upper wall 67 decreases, and the thickness of the layer of the workpiece on the swing sorting shelf 20 decreases. The threshing apparatus of Claim 4 was set as the structure which increases the rear upward inclination-angle of the said wind direction guide member 66 and the upper wall 67.

Effect of the Invention

According to the invention described in claim 1, the discharge straw after threshing is supported by the support member 10c to guide the action zone of the separating teeth 10b of the barrel 10, and the grains and the grains that have been inserted into the discharge straw are attached. Can be separated and recovered from the discharge straw by the action of the separating teeth 10b. At this time, since the front side of the recovery chamber 11F is divided by the partition plate 11K, processed materials such as straw flakes threshed in the threshing chamber 11 on the front side of the partition plate 11K are recovered. It is hard to invade into the chamber 11F, and the collection | recovery efficiency of the grain in this collection chamber 11F becomes high.

According to invention of Claim 2, while exhibiting the effect of the invention of Claim 1, for example, rocking | fever sorting shelf 20 by the grain and the straw which fell from the threshing chamber 11 and the collection chamber 11F. In the case where the processed material of the bed increases, the sorting wind flows backward through the first water collecting unit 19A by adjusting the blowing direction of the sorting wind from the tuyere 16 downward, so that it is lowered from the swing sorting shelf 20. Straw flakes which fall down are hard to be collect | recovered by the 1st water collection | recovery part 19A, and sorting precision improves. Further, the sorting wind flowing backwards facilitates the transport of the processed material on the swing sorting shelf 20, and facilitates the discharge of straw debris from the rear end of the swing sorting shelf 20, thereby sorting out the swing sorting shelf 20. The load is reduced and the threshing work becomes more efficient. In addition, when the processed material on the swing sorting shelf 20 decreases, conveyance of the processed material on the swing sorting shelf 20 is not promoted by adjusting upwardly the blowing direction of the sorting wind from the tuyere 16, The grain is hard to be scattered to the outside from the rear end of the swing sorting shelf 20 together with straw crumbs, thereby improving the recovery efficiency of the grain. Further, by adjusting the blowing direction of the sorting wind from the tuyere 16 upward, even if a part of the sorting wind is blown up toward the recovering chamber 11F, the sorting wind is blocked by the supporting member 10c, and thus, the recovering chamber 11F. ), The grains fall smoothly, and the recovery efficiency of the grains is further increased.

According to invention of Claim 3, while the effect of the invention of Claim 2 is exhibited, the sorting wind blown from the tuyere 16 fluctuates in the state which adjusted the blowing direction of the sorting wind from the tuyere 16 upward. The sorting wind in which the grain falling from the collection chamber 11F is spouted up from the swinging sorting shelf 20 because it is spouted upward from the portion on the rear side than the portion facing below the recovery chamber 11F of the sorting shelf 20. This makes it less likely to fly backward, and this grain is less likely to scatter from the rear end of the swing sorting shelf 20 to the outside, thereby improving the recovery efficiency of the grain.

According to invention of Claim 4, while exhibiting the effect of the invention of Claim 2, for example, the rocking | fluctuation sorting shelf 20 by the grain and the straw which fell from the threshing chamber 11 and the collection chamber 11F. When the processing material of the upper part increases, the upper wall 67 and the wind direction guide member 66 which were provided in the tuyeres 65 of the tuyere 16 are rotated downward by the interlocking mechanism S, and the lower side air path 75 is rotated. Opening increases the air volume of the sorting wind blown from the lower side air passage 75, and adjusts the blowing direction of the sorting wind blown from the upper side air passage 74 downward, so that the sorting wind passes above the first water collecting unit 19A. As a result, the straw scraping off from the swing sorting shelf 20 is difficult to be recovered to the first water collecting unit 19A, and the sorting accuracy is improved. Further, the sorting wind flowing backwards facilitates the transport of the processed material on the swing sorting shelf 20, and facilitates the discharge of straw debris from the rear end of the swing sorting shelf 20, thereby sorting out the swing sorting shelf 20. The load is reduced and the threshing work becomes more efficient. In addition, when the processing material on the swing sorting shelf 20 decreases, the upper wall 67 and the wind direction guide member 66 are rotated upward by the interlocking mechanism S, and the lower air passage 75 is closed to lower this side. By reducing the sorting wind blown from the air passage 75 and adjusting the blowing direction of the sorting wind blown from the upper wind path 74, the transfer of the processed material on the swing sorting shelf 20 is not promoted. In addition, it is difficult for the grain to be scattered to the outside from the rear end of the swing sorting shelf 20 together with straw crumbs, thereby improving the recovery efficiency of the grain.

According to the invention described in claim 5, the upper wall 67 and the wind direction guide member 66 are upwardly upward depending on the thickness of the layer of the processed material on the swing sorting shelf 20 while exhibiting the effect of the invention according to claim 4 above. By controlling the inclined posture, the sorting accuracy, threshing efficiency, and grain recovery rate can be improved.

1 is a left side view of a combine.
2 is a plan view of the combine.
3 is a front view of the combine.
4 is a rear view of the combine.
It is a side view for explanatory drawing showing the threshing apparatus longitudinally.
6 is an enlarged view illustrating main parts of FIG. 5.
7 is a plan view for explaining the threshing apparatus in a horizontal cross section.
8 is an explanatory plan view showing the threshing apparatus in a horizontal cross section at another position.
FIG. 9 is an explanatory plan view illustrating part of FIG. 8 by breaking.
10 is a cross-sectional view taken along line AA of FIG. 8.
FIG. 11 is a cross-sectional view taken along line BB of FIG. 8.
12 is a cross-sectional view taken along line CC of FIG. 8.
It is an enlarged view of the interlock mechanism part of an upper wall and a wind direction guide member.
FIG. 14: is explanatory side view which shows the threshing apparatus longitudinally in the state which made the inclination angle of the upper wall and the wind direction guide member the maximum. FIG.
FIG. 15: is explanatory side view which shows the threshing apparatus longitudinally in the state which made the inclination angle of the upper wall and the wind direction guide member the minimum.
16 is a front view of the operation panel.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, in order to make an understanding easy, the direction is demonstrated and demonstrated conveniently, but a structure is not limited by these.

1 to 4, reference numeral 1 denotes a traveling frame having a combine, reference numeral 2 denotes a traveling device having a pair of left and right crawlers, reference 3 denotes a threshing apparatus provided above the base frame 1, and reference 4 denotes a threshing apparatus ( 3) a harvesting unit provided at the front side of the tank, 5 is a grain tank installed at the side of the threshing apparatus 3, 6 is a control unit installed at the front of the grain tank 5, and 7 is a storage of the grain tank. Each discharge pipe for discharging a grain is shown.

As shown to FIG. 5, FIG. 8, the threshing apparatus 3 is equipped with the threshing chamber 11 in the upper part, and is a grain stem supply conveying apparatus in one side (for example, the left side of a gas running direction) of the threshing chamber 11; (12) is provided. The grain stem carried out by the traveling apparatus 2, and harvested by the harvesting | reaping part 4 is taken over by the grain stem supply conveyance apparatus 12, and is 12A of holding rods of the grain stem supply conveyance apparatus 12. As shown in FIG. ), And after being conveyed backward in the state sandwiched between the supply conveying chain 13B, it is turned over to the discharge straw conveying apparatus 14 which conveys the threshing completed straw.

(Threshing Room and Recovery Room)

As shown in FIG. 5, the barrel 10 is pivotally mounted substantially horizontally in the threshing chamber 11, As the main part of this barrel 10, the lower side is surrounded by the rapid network 15, and the rapid grid 15 is shown. Below, the tuyere casing 17 of the tuyere 16 is provided. On the outer circumferential surface of the barrel 10, a plurality of jet teeth 10a are provided.

As shown to FIG. 5, FIG. 8, FIG. 9, and 10-12, the intermediate | middle partition wall arrange | positioned near the outer periphery of the rear part of the barrel 10 in the downstream part (rear part) of the threshing chamber 11 ( A partition plate 11K is provided, and a dust treatment chamber introduction portion 11E divided by the intermediate partition 11K is formed on the front side of the intermediate partition 11K. The bottom face of this dust processing chamber introduction part 11E is formed in grid | lattice form, and the dust outlet 11H which falls to the downward swing sorting shelf 20 is formed. The downstream end (rear end) of the barrel 10 extends through the intermediate partition 11K and into the recovery chamber 11F formed on the rear side of the intermediate partition 11K. This intermediate partition 11K is being fixed to the apparatus frame of the threshing chamber 11. On the outer circumferential surface of the barrel 10 in the recovery chamber 11F, a plurality of plate-shaped separating teeth 10b for scraping off (or shaking off) the grains stuck to the grain stem (drain straw) after threshing are formed. have. Moreover, after arrange | positioning at the rear side of the rear end of the barrel 10, the rear end part of the rotating shaft 10S of the barrel 10 is bearing by 11L of side walls.

Moreover, as shown in FIG. 12, the accommodating plate (support member) 10c formed in circular arc shape along the lower outer periphery of the barrel 10 in this collection chamber 11F is arrange | positioned. This accommodation plate 10c supports the grain stem after threshing, and guides this grain stem into the rotation locus (working region) of the separating tooth 10b. This receiving plate 10c is provided only in the range which supports the site | part on the base side of a grain stem, and is not provided in the ear tip side of a grain stem. That is, this accommodating plate 10c is provided in the range from the grain stem supply conveying apparatus 12 side to the position just below the axis center 10P of the rotating shaft 10S of the barrel 10, and this shaft center 10P The accommodating plate 10c is not provided in the part used as the inner side of the threshing chamber 11 more. Thereby, the site | part between the inner side edge part of the accommodating plate 10c, and the dust discharge processing chamber 30 is opened downward over the opening width T. As shown in FIG.

As shown in FIG. 9, the receiving plate 10c is provided with a plurality of elongated holes 10d inclined by the angle θ with respect to the axis center 10P direction of the barrel 10 in plan view. The housing plate 10c not only supports the grain stem after threshing but also blocks the sorting wind blown from the tuyere 16 described later to promote the leakage of the grain from the long hole 10d.

And while the grain stem harvested by the harvesting | reaping part 4 is sharply adjusted and it is pinched and conveyed by the grain stem supply conveying apparatus 12, the ear tip side is inserted in the threshing chamber 11. The grain stem supplied to the threshing chamber 11 is threshed by the action of the plunger 10a of the rotating barrel 10, and the threshed grains fall from the rapid grid 15 and are supplied to the sorting chamber 18, and the shaken sorting is performed. Selected by the device 21. Among the processed materials threshed in the threshing chamber 11, the processed materials not leaked from the supply grid 15 reach the dust exhaust treatment chamber introduction portion 11E at the rear side of the threshing chamber 11, and then the dust exhaust treatment chamber 30 from the communication port 35. It is supplied to and processed by the dust-treatment body 31 integrated in this dust-treatment chamber 30.

In addition, grains with a grain or a grain with which the grains which were threshed in the threshing chamber 11 are contained in the grain stem which threshed in the site | part on the front side rather than the recovery chamber 11F in the threshing chamber 11, The grains with the grains and the ear branches pass through the space portion formed below the intermediate partition 11K together with the grain stem after threshing. And the grain stem after threshing which reached in 11F of collection | recovery chambers receives the action of the several separating teeth 10b installed on the outer peripheral surface of the barrel 10 in the state supported on the receiving plate 10c, and it enters in this grain stem. The grains or grains attached to the grains were removed and separated. At this time, since the front side of the recovery chamber 11F is divided by the partition plate 11K, the processed material threshed in the threshing chamber 11 on the front side of the partition plate 11K is exhausted. It is hard to intrude into 11F of collection chambers from inside, and the collection | recovery efficiency of the grain in this collection chamber 11F becomes high.

The dropped grains and the grains to which the branches are attached fall from the site of the opening width T, the rear end of the receiving plate 10c, and the long hole 10d onto the lower swing sorting shelf 20, After being sorted, the grains are taken in by the first recovery section 19A and stored in the grain tank 5.

(Selection room)

As shown in FIG. 5, below the threshing chamber 11, a sorting chamber 18 for sorting grains and foreign matters by blowing air from the tuyere 16 is formed, and at the upper part of the sorting chamber 18, a tuyere ( A swing sorting device 21 constituted by a swing sorting shelf 20 reciprocating in the blowing direction (front and rear direction) of 16 is provided.

(Swivel sorting shelf, air balloon, shelf board, etc.)

As shown in FIG. 6, the start end part (front end part) of the rocking | fluctuation sorting shelf 20 is formed as the conveyance shelf part 22 located above the tuyere casing 17. As shown in FIG. The structure of the conveyance shelf part 22 is arbitrary, The grain in the conveyance direction downstream of the oscillation | separation sorting apparatus 21 is made to incline the conveyance direction downstream side low, or to form a processus | protrusion or an unevenness | corrugation on the upper surface of the conveyance shelf part 22. It is only necessary to be able to transfer the leakage from the grid 15 toward the grain sieve 23.

The grain sheave 23 is a sieve for sorting foreign matter such as grains and straw debris from the rapid grid 15. In the illustrated example, a thin plate-like body inclined so that the downstream side (rear side) of the conveying direction becomes high in the swinging direction is predetermined. Plurally spaced apart. On the downstream side (rear side) of the conveyance direction of the grain sheave 23, the chaff sieve 24 which sorts a grain and chaff (straw shavings) is provided. The chaff sheave 24 of an example of example is provided with the plurality of thin plate-shaped objects which can adjust the inclination angle at a predetermined interval in the swinging direction. On the downstream side of the chaff sieve 24, a straw rack 25 is provided as a tank sorting means for sorting grains (attached kernels) and the like stuck to the discharge straw passing through the threshing chamber.

In the lower part of the sorting chamber 18, the flue 16, the groove-shaped shelf plate 19A (the 1st water collection | recovery part), and the groove-shaped shelf board 19B (the 2nd water collection | recovery part) are shaken and sorted. In the conveyance direction of the shelf 20 (from front to back), it is provided in this order. The tuyere 16 is provided with a tuyere facing between the swinging sorting shelf 20 and the first shelf plate 19A. Conveyor No. 1 communicating with the grain tank 5 communicates with the groove of the No. 1 shelf plate 19A, and Conveyor No. 2 communicating with the Process No. 2 processing chamber 30 in the groove of the No. 2 shelf plate 19B. (27) is in communication. In addition, a range from the vicinity of the boundary between the grain sheave 23 and the chaff sheave 24 to the vicinity of the shelf end 19C of the first shelf plate 19A is provided between the swinging sorting shelf 20 and the first shelf plate 19A. The sorting net 28 is installed so that it may extend.

Since the swing sorting shelf 20 swings up and down in a forward and backward direction by a driving mechanism (not shown), the workpiece moves to the rear side and receives wind blowing from the tuyere 16, and the wind is sorted by the grain. And the chaff sieve 24 is laid down and supplied to the sorting net 28, and the processing material on the sorting net 28 is also received by the sorting wind from the tuyere 16 from the lower side, and the thin straw flakes are blown back. Is discharged from the sorting net 28 during the transfer, and is collected by the number 1 shelf plate 19A, and is fed to the grain tank 5 by burning the number 1 conveyor 26. The grains stored in the grain tank 5 are carried out of the combine through the discharge pipe 7. In this way, the processed material which is laid down from the sorting net 28 and collect | recovered by the 1st shelf board 19A is a grain (green particle) with few sticking branches.

On the other hand, the thing which has not leaked from the sorting net 28 is conveyed back on this sorting net 28, reaches the 2nd shelf board 19B from the rear end of the sorting net 28, and is collect | recovered. The processed material which is supplied to the shelf board 19B without dropping from the sorting net 28 is mainly a grain of fine grain or a small straw crumb to which the branch is attached.

Among the processed materials on the swing sorting shelf 20, the lightweight one is blown away by the rocking action of the swing sorting shelf 20 and blowing by the tuyere 16 without lowering the sheaves 23, 24. 24) The bed is moved backwards, and the small item 2 on the straw rack 25 is laid down and collected by the shelf plate 19B. It is laid down from the rear part of the sheaves 23 and 24 or the straw rack 25, and is supplied to the 2nd process chamber 40 by the 2nd conveyor 27. As shown in FIG. Accepted by the second conveyor 27 is a mixture of normal grains, grains with spiked branches, straw flakes, and attached kernels with normal grains stuck in straw crumbs. The grains or straw flakes with these spiked branches are retreated as a reducing agent twice. In addition, the workpieces not leaked from the sieves 23 and 24 and the straw rack 25 are further transported to the rear and discharged to the outside from the third dust outlet 56 formed on the rear end of the swing sorting shelf 20. . Some of these grains are contained, and the sorting precision of a threshing apparatus is evaluated according to this quantity (ratio).

(Dust treatment room)

As shown in FIG. 8, FIG. 9, FIG. 11, FIG. 12, the inside of the dustproof processing chamber 30 which communicated with the threshing chamber 11 through the communication opening 35 is exhausted substantially parallel to the axial center of the barrel 10. FIG. The processing body 31 is pivotally mounted. The opposite side (left side toward the front) and the oscillation screening shelf 20 of the dust collection body 31 are surrounded by the side plate 32, and the oscillation screening shelf 20 side (right side toward the front) of the dust exhaust treatment body 31 is surrounded. ) Is provided with a treatment outlet 33. The wing | blade 34 is provided in the terminal part (rear end part) of the outer peripheral surface of the dust-removing body 31 in the conveyance direction of a processed object, and the dust-treatment tooth 36 is provided in the start-end side rather than this.

The processed material supplied to the dust treatment chamber 30 is discharged from the treatment discharge port 33 onto the swing sorting shelf 20 in the process of being pulverized by the rotating dust treatment body 31 and moving to the end side. In addition, the terminal of the exhaust treatment chamber 30 is closed, and the processing material which has reached this is discharged on the straw rack 25 of the swing sorting shelf 20 by the wing body 34, and these discharge processing materials The silver is sorted by the rocking sorting shelf 20 so that the grains are recovered, and straw crumbs and the like are discharged out of the device. The processed material supplied to the dust-treatment chamber 30 includes grains with a small amount and grains attached thereto, and the grains and the small straw flakes with the spiked branches are attached to the swing sorting shelf 20 from the processing outlet 33. Falls.

(Process 2)

As shown in FIG. 8, FIG. 9, and FIG. 10, the 2nd process chamber 40 which processes the 2nd material collect | recovered by the 2nd conveyor 27 is provided in the front side of the dust collection chamber 30. As shown in FIG. In the 2nd processing chamber 40, the 2nd processing body 41 which has an intermittent spiral blade on the outer peripheral surface is pivotally mounted concentrically and serially with the dust exhaustation processing body 31. As shown in FIG. The lower part of the 2nd process body 41 is surrounded by the groove-shaped receiving plate 42 except the terminal part, and the lower part of the terminal part (front end) of the 2nd process body 41 is the 2nd process material. As the reduction port 43a, it opens in the upper part of the side of the process chamber 40 side in the upstream of the oscillation sorting shelf 20. As shown in FIG. Moreover, the supply port 44a of the 2nd thing supplied from the 2nd conveyor 27 is opened above the start end side (rear end side) of the 2nd process body 41. As shown in FIG.

In the No. 2 processing chamber 40, while No. 2 is conveyed by the No. 2 processing body 41, separation of grains and removal of the ear branch from the kernels to which the ear branch is attached are performed. ), Falls to the swing sorting shelf 20, joins the processed material from the feeding chamber 40 and is reselected.

(Suction back fan)

As shown in FIG. 6, the suction port 44 of the suction dust collecting fan 43 is opened above the end portion (rear end portion) of the swing sorting shelf 20. The suction exhaust fan 43 is covered by a casing 45 having a vent hole 46. In the example of illustration, the suction exhaust fan 43 is attached to the side wall on the opposite side to the dust exhaust processing chamber 30 among the side walls of the upper space of the swing sorting shelf 20 so that the dust exhaust fan 43 may be attached, Although 44 is open, these installation positions are not limited to the example of illustration.

(Discharge straw processing unit)

As shown to FIG. 8, FIG. 9, in the back side of the threshing apparatus 3, the threshing grain finished after threshing through the threshing chamber, ie, the discharge straw, is turned over to the discharge straw conveying apparatus 14, and the terminal of the discharge straw conveying apparatus 14 is terminated. To the cutter device 48 as the discharge straw processing device. In the middle of the driven side conveying device 14K included in the discharge straw conveying device 14, the electric belt 10U and the input pulley are formed from the pulley 10T attached to the rear end of the rotating shaft 10S of the barrel 10. Power is transmitted through 10V, the transmission mechanism in the bevel gear case 10W, and the output shaft 10X provided through the tip end side conveying apparatus 14H parallel to the said driven side conveying apparatus 14K. And power is transmitted from the rear end of this driven-side conveying apparatus 14K to the rear end of the ear tip-side conveying apparatus 14H via the transmission shaft 10Y.

The cutter apparatus 48 is a structure which cuts the discharge straw supplied by falling from upper direction through a pair of rotary cutter blade 49, and cut | disconnects. The outer side of the rotary cutter blade 49 is covered by a hood, and the front side of the rotary cutter blade 49 is provided with a cutting straw guide plate 50 for guiding the cutting straw debris of the cut straw to fall backward. It is. The cutting straw guide plate 50 is located at the same height as the lower portion of the upper cutter blade 49, the inclined downward downward so as to be located on the rear side under the name, the lower portion of the cutting straw guide plate 50 It is located below the lower part of the lower cutter blade 49. It is also possible to use other discharge straw processing apparatuses instead of the cutter apparatus 48.

(No.3 Baejin-gu)

5 to 7, the third exhaust port 56 is opened in the rear side wall 55 of the threshing apparatus 3, and the rear part of the swing sorting shelf 20 is the third exhaust port 56. It is configured to face). Further, a third dust outlet shutter 57 for opening and closing the third dust outlet 56 is provided, and the grain included in the dust treatment product discharged from the treatment product discharge port 33 of the dust treatment chamber 30 is three times. It can be supplied to the chaff sieve 24 or the straw rack 25 of the rocking | flux sorting shelf 20, and is collect | recovered by the sieve, without discharging from the dust discharge port 56. As shown in FIG. Therefore, the threshing efficiency can be improved by preventing occurrence of the third loss. In addition, the dust exhaust processing chamber 30 and the suction port 44 of the suction dust exhaust fan 43 are arrange | positioned so that the oscillation sorting shelf 20 may be interposed, and the dust exhaust processing chamber will be closed when the dust outlet shutter 57 is closed # 3. Since the dust-treated product discharged | emitted from 30 spreads widely toward the suction port 44 side of the suction dust collecting fan 43, the collection | recovery efficiency of a grain improves further.

(Upper wall, wind direction guide member)

As shown in FIG. 6, the tuyere 65 of the tuyere casing 17 is opened between the upper wall 67 located above and the lower wall 68 located below, and these upper wall 67 and the lower wall 68 are shown. The wind direction guide member 66 is provided in the upper and lower middle of the. As a result, the tuyeres 65 are partitioned into an upper air path 74 between the wind direction guide member 66 and the upper wall 67, and a lower air path 75 between the wind direction guide member 66 and the lower wall 68. have. Although the upper wall 67 and the lower wall 68 are plate-shaped in the example of illustration, it is not limited to this.

As shown to FIG. 6, FIG. 13, the wind direction guide member 66 has the shape which has the inverted triangular longitudinal section which has the vertex 70 below. Thereby, the upper surface 69 in the wind direction guide member 66 of the example of illustration is formed in the flat surface of the inclination substantially the same as the upper wall 67 of the tuyere casing 17, and the lower surface of the wind direction guide member 66 is It is formed by the curved surface which has the lower front side inclined surface 71 and the lower rear side inclined surface 72. As shown in FIG. When the wind direction guide member 66 has such a shape, the wind from the upper wind path 74 flows toward the swing sorting shelf 20 without spreading much downward along the upper surface of the wind direction guide member 66, The wind emitted from the air path 75 also flows upward along the lower rear inclined surface 72 of the wind direction guide member 66 and flows to a range further downstream of the swing sorting shelf 20.

The wind direction guide member 66 has the horizontal rotation axis 66x orthogonal to the blowing direction as the rotation center, and the upper surface 69 and the lower surface 71, 72 are in an angle range inclined upwardly toward the downstream side in the blowing direction. The rotating shaft 66x of the wind direction guide member 66 is located in the middle of the blowing direction of the wind direction guide member, and is rotated so that the upstream and downstream of the rotating shaft 66x can move up and down. have. Both ends of the rotating shaft 66x of the wind direction guide member 66 are axially supported by both side walls 18S of the sorting chamber 18. In addition, when the inclination angle (hereinafter also referred to simply as inclination angle or inclination posture) with respect to the horizontal plane of the wind direction guide member 66 is increased to the maximum by the rotation of the wind direction guide member 66, The end part on the side of the tuyere 16 is comprised so that the lower wall 68 of the tuyeres 65 may approach or contact.

In addition, the upper wall 67 also has the same direction as the wind direction guide member 66 within the angle range in which the horizontal rotation axis 67x orthogonal to the blowing direction is the center of rotation, and the lower surface is obliquely upwardly directed toward the downstream side in the blowing direction. It is configured to rotate. That is, between the lower surface of the rear part of the upper wall 67 and the upper surface of the rear part of the wind direction guide member 66 is connected with the linkage rod 88, and the upper wall 67 and the wind direction guide member 66 maintain a substantially constant relative posture. The interlock mechanism S which can change an angle up and down is comprised. In addition, although the rotating shaft 67x of the upper wall 67 is located in the end of the air port 16 side of the upper wall 67 in the example of illustration, it may be located in the middle of a blowing direction, or the downstream end of a blowing direction, What is necessary is just to rotate so that a downstream side may move up and down. Both ends of the upper shaft 67 are also supported by both side walls 18S of the sorting chamber 18.

In such a structure, the distribution ratio with respect to the upper air path 74 and the lower air path 75 of the wind supplied from the tuyere 16 is determined by the ratio of the opening degree of the upper air path 74 and the lower air path 75. Therefore, when the upper wall 67 and the wind direction guide member 66 rotate in the same direction in a direction in which the opening degree of the lower air passage 75 decreases, the air volume of the lower air passage 75 decreases, and conversely, the upper air passage ( While the air volume of the 74 is increased, the wind direction of the lower air path 75 is changed according to the change of the angle of the lower surface of the wind direction guide member 66, and the wind direction of the upper air path 74 is the lower surface of the wind direction guide member 66. It changes according to the angle change. On the other hand, if the upper wall 67 and the wind direction guide member 66 rotate in the same direction in the direction in which the opening degree of the lower air passage 75 increases, the air volume of the lower air passage 75 increases, and conversely, the upper air passage ( The air volume of 74) is reduced. The wind direction of the lower wind path 75 is changed according to the change in the angle of the lower surface of the wind direction guide member 66, and the wind direction of the upper wind path 74 is changed according to the change of the angle of the lower surface of the wind direction guide member 66. That is, the wind direction and the air volume of the upper air path 74 and the lower air path 75 can be adjusted at the same time.

The drive means for rotating the wind direction guide member 66 and the upper wall 67 can be appropriately selected and designed as long as the wind direction guide members 66 and 67 are rotated in conjunction with each other. You may use it. In the example shown in FIG. 13, one end of the rotation shaft 66x of the wind direction guide member 66 protrudes from the side wall 18S of the sorting chamber 18, and the tip of the main swing lever 81 is attached to the protruding portion. This main swing lever 81 and the wind direction guide member 66 are configured to rotate integrally. Moreover, the stay 82 is attached to the outer surface of the side wall 18S of the sorting chamber 18, and the pinion gear 83g is attached to the drive shaft 83x of the motor 83 mounted in this stay 82, A fan gear 84 meshing with the pinion gear 83g is axially supported by the stay 82, and the circumferential end (first eccentric position) on one side of the fan gear 84 and the proximal end of the main swing lever 81 are axially supported. Is connected via the interlocking rod 85, and each connection part becomes the connection which can be rotated by the pin 85p. In addition, the stay 82 is equipped with a rotation amount detecting device 86 such as a potentiometer, and the tip end portion of the auxiliary swing lever 87 is attached to the detection shaft 86x of the rotation amount detecting device 86. And the rotation amount of the secondary swing lever 87, the pin 87p protrudes from the circumferential end (second eccentric position) on the opposite side of the fan gear 84, and the pin 87p is the secondary swing lever. It is comprised so that the inside of the groove 87d along the longitudinal direction of 87 may slide. In addition, the site | part on the blowing direction downstream from the rotating shaft 66x in the wind direction guide member 66, and the site | part of the blowing direction downstream from the rotating shaft 67x in the upper wall 67 are both sides in the sorting chamber 18. As shown in FIG. Each part is connected via the interlocking rod 88, and each connection part becomes the connection which can be rotated by the pin 88p.

Accordingly, the wind direction guide member 66 rotates forward and backward through the fan gear 84, the interlock rod 85, and the main swing lever 81 by the forward and reverse driving of the motor 83, and the rotation amount thereof is the fan gear 84. And the rotation amount detecting device 86 through the auxiliary swing lever 87. In addition, as the wind direction guide member 66 rotates, the upper wall 67 connected to the wind direction guide member 66 through the linkage rod 88 also rotates in association with the wind direction guide member 66. Therefore, the wind direction guide member 66 and the upper wall 67 can be rotated simultaneously and in the same direction, and can be adjusted at predetermined angles, respectively, so that the adjustment operation becomes easy.

The inclination angles (also referred to only as inclination angles or inclination postures) with respect to the horizontal plane of the wind direction guide member 66 and the upper wall 67 can be appropriately changed within the above-mentioned ranges, but the majority of the sorting winds of the upper air path 74 are A sheave (chaff sheave 24 in the example of illustration) of the rocking | fever sorting shelf 20. As shown in FIG. The sorting net 28 may be used] Upstream from the downstream (rear) end, and more than half of the sorting wind from the lower air passage 75 is downstream from the sieve (chap sheave 24) downstream (rear) end. It is preferable to set the inclination angle ranges of the wind direction guide member 66 and the upper wall 67 to face the side. By changing the inclination angles of the wind direction guide member 66 and the upper wall 67 within this range, a more appropriate sorting can be performed even if the flow rate of the processed material is a low flow rate (low flow rate) or a high flow rate (high flow rate). This can reduce grain loss and improve screening.

In particular, as shown in FIG. 13, the sorting winds of the upper air path 74 and the lower air path 75 are both oscillating sorting shelves as the inclination angles of the wind direction guide members 66 increase. It is preferable that the air volume to the upstream side (front side) of 20) is increased so that the air volume to the downstream side (rear side) is reduced. And as shown in FIG. 14, when the inclination angle of the wind direction guide member 66 is maximized, it is more preferable to comprise so that the air volume of the upper air path 74 may become larger than the air volume of the lower air path 75. As shown in FIG. Moreover, when the inclination angle of the wind direction guide member 66 is maximized, the blowing direction extension line 66L of the upper surface of the wind direction guide member 66 is larger than the shelf end 19C of the 1st shelf board 19A. It is preferable to increase the sorting wind toward the upstream side (front) of the rock-separation sorting shelf 20 rather than the shelf end 19C of the 1st shelf board 19A. In addition, by this, the sorting wind blown from the tuyere 16 blows up from the site | part on the back side rather than the site | part on the swinging sorting shelf 20 which faces below 11F of collection | recovery chambers.

Thus, for example, during low flow rate or low speed operation, by reducing the sorting wind on the downstream side of the swing sorting shelf 20, the scattering outside the apparatus is reduced, and the sorting wind toward the upstream side of the swing sorting shelf 20 is increased. It is possible to maintain a good screening condition by limiting the leakage of straw or kernels with sticks attached. Further, the grain falling from the recovery chamber 11F is less likely to be blown backward by the sorting wind blown up from the swing sorting shelf 20, and the grain falls outward from the rear end of the swing sorting shelf 20. It is difficult to scatter, and the recovery efficiency of a grain can be improved.

In particular, when the inclination angle of the wind direction guide member 66 is increased to a certain degree or more, for example, when it is maximized, the exhaust fan 43 is placed on the blowing direction extension line 66L on the upper surface of the wind direction guide member 66. It is preferable if the suction port 45 is opened (in other words, if the extension line 66L intersects with the suction port 45). As a result, the exhausted air spouted from the front can be efficiently sucked by the exhaust fan 43, and the sorting wind is hard to escape to the rear of the body (particularly, the third exhaust port shutter 57 as shown in the example). Can be effectively discharged out of the device without impairing the sorting ability.

As shown in FIG. 15, the sorting winds of the upper air path 74 and the lower air path 75 are both fluctuating sorting lathes as the inclination angle of the wind direction guide member 66 decreases. It is preferable that it is comprised so that the air volume may be changed to the downstream of 20), the air volume of the upper air path 74 may be reduced, and the air volume of the lower air path 75 may be increased. When the inclination angle is minimized, the air volume of the lower air passage 75 is more preferable than the air volume of the upper air passage 74. In addition, when the inclination angle is minimized, the blowing direction extension line 66L on the upper surface of the wind direction guide member 66 is positioned at the shelf end 19C of the first shelf plate 19A and its vicinity, and the first shelf plate 19A. It is preferable to increase the sorting wind toward the shelf end 19C. As a result, it is possible to promote the removal of the sorting wind out of the apparatus from the sorting chamber at the time of high speed work or high flow rate, to reduce the amount of reduction, and to improve the adaptability to the high speed work.

The amount of change of the inclination angle of the wind direction guide member 66 and the upper wall 67 may be the same, but may differ. For example, as shown in FIG. 14, FIG. 15, when the inclination angle of the wind direction guide member 66 is rotated from the maximum state to the minimum state, the rotation amount of the front end (the air vent 16 side) of the upper wall 67 is changed. When the amount of rotation of the front end of the wind direction guide member 66 is increased, the rotational amount of the front end (the air vent 16 side) of the upper wall 67 is relatively small, so that the amount of the wind direction of the upper air path 74 is not damaged. Not only can it be changed, but also the rotational amount of the front end of the wind direction guide member 66 becomes relatively large, so that the distribution ratio of the sorting winds to the upper air passage 74 and the lower air passage 75 can be largely changed, and also the wind direction of both wind passages is also changed. It is preferable because it can be made.

Although the upper limit (upper limit) and lower limit (lower limit angle) of the inclination angles of the wind direction guide member 66 and the upper wall 67 may be fixed, the proper inclination angle range of the wind direction guide member 66 varies depending on the crop condition or crop type, and thus is continuous. It is desirable to be able to change in or stepwise. In addition, when the upper limit angle and the lower limit angle can be changed, the upper limit angle and the lower limit angle can be manually adjusted to an arbitrary angle, and in addition, the upper limit angle and the lower limit angle can be automatically changed to a predetermined angle according to the crop species. It is more preferable to make it switchable. In the case of manual adjustment, when the upper and lower angles set in advance in the use of the combine do not match the crop conditions (e.g., high and low amount of water in the crop, degree of crop slanting, increase or decrease in the amount of treated water), they are arbitrarily corrected. can do. On the other hand, in the case of automatic change, the upper and lower limit angles are configured to be switched in advance according to the crop species such as rice and barley, so that the upper and lower limit angles can be easily switched according to the crop type so that appropriate selection can be performed. . For example, it is preferable that barley has a smaller grain ratio in the amount of water to be processed than rice and lowers the upper limit of the inclination angle of the wind direction guide member 66 so as to increase the discharge efficiency to the outside of the apparatus even at the same flow rate.

Fig. 16 shows an example of the operation panel for changing the upper and lower angles of the wind direction guide member 66 and the upper wall 67, and the switching rotary switch 91 and the opening near the opening degree adjustment of the sheave. A degree adjustment rotary switch 92 is provided, and the upper limit angle of the wind direction guide member 66 and the upper wall 67 according to each crop type by fitting the switching rotary switch 91 to "rice" or "barley", and When the lower limit angle is automatically changed and the switching rotary switch 91 is set to "manual", the upper and lower limit angles of the wind direction guide member 66 and the upper wall 67 depend on the rotational position of the opening degree adjustment rotary switch 92. It is changed to an arbitrary angle determined.

Although the upper and lower angles of the wind direction guide member 66 and the upper wall 67 may be set mechanically, as described above, the rotation of the wind direction guide member 66 and the upper wall 67 may be performed to a drive source such as a motor. In the case where the control is to be carried out, the drive control is preferably performed.

(Layer thickness detection sensor)

The inclination angles of the wind direction guide member 66 and the upper wall 67 may be fixed regardless of the amount of processing water on the swing sorting shelf 20. However, the proper wind direction and the amount of wind in wind sorting depend on the amount of treated water. For example, during low flow rate or low speed operation, by reducing the sorting wind on the downstream side of the swing sorting shelf 20, the scattering outside the apparatus is reduced, and by increasing the sorting wind on the upstream side of the swing sorting shelf 20, straw or ear is cut. It is desirable to limit the leakage of the kernels with branches and the like, and to promote the removal of the sorting wind from the sorting room from the sorting room and to reduce the amount of reduction during high speed work or high flow rate, thereby improving the adaptability to the high speed work. . Therefore, when the inclination angle of the wind direction guide member 66 and the upper wall 67 is fixed irrespective of the amount of water to be processed, there is a possibility that the screening ability may be reduced due to the increase or decrease of the amount of water to be processed.

Therefore, as shown in FIG. 7, FIG. 10, and FIG. 14, the layer thickness detection sensor 95 which detects the thickness of the layer of the process object on the rocking | flux sorting shelf 20 is provided, and this layer thickness detection sensor 95 On the basis of the detection result, when the thickness of the layer of the workpiece increases, the inclination angle with respect to the horizontal plane of the wind direction guide member 66 and the upper wall 67 is increased, and when the thickness of the layer of the workpiece decreases, the wind direction guide member 66 and It is preferable to provide a control device (not shown) that reduces the inclination angle with respect to the horizontal plane of the upper wall 67. Thereby, even if there is a change in the thickness of the layer of the processed object, the inclination angles of the wind direction guide member 66 and the upper wall 67 are automatically adjusted appropriately in accordance with the detection result of the layer thickness of the processed object on the swing sorting shelf 20, so that the optimum Grain loss and screening can be obtained.

The layer thickness detection sensor 95 can be configured by using a known contact or noncontact sensor. In the example of illustration, the terminal side (the 2nd material return port side or the front end side) part in the receiving plate 42 of the process chamber 40, and the lower end part of the intermediate partition 11K of the dust exhaust process chamber introduction part 11E are sensors It is connected by the stay 95S, the rotation amount detection apparatus 96, such as a potentiometer, is attached to this sensor stay 95S, and the float 97 is attached to the detection axis 96x of this rotation amount detection sensor 96. Is attached in a suspended state, and the float 97 is raised while rotating in the direction of movement of the workpiece in contact with the workpiece moving on the transfer shelf 22 of the swing sorting shelf 20, and the amount of rotation thereof is increased. It is comprised so that it may be detected by the rotation amount detection apparatus 96 as a layer thickness of the process object which moves on the part 22. As shown in FIG.

Thus, the intermediate | middle partition of the terminal side (No. 2 processing-reduction | reduction port side or front end side) part in the accommodating plate 42 of the process chamber 40 by the sensor stay 95S, and the dust exhaust process chamber introduction part 11E. By adopting the structure connecting the lower end of 11K, the float 97 is suspended in the air, avoiding the position which obstructs the discharge of the second treatment from the second treatment outlet 43a and its transfer. Not only can it be installed, but also the receiving plate 42, the middle partition 11K and the sensor stay 95S of the process chamber 40 can be connected in a triangular shape, which leads to the reinforcement of the device frame 1. have.

In the case where the float 97 is rotated as shown in the example of illustration, the center of rotation of the float 97 (that is, the detection axis 96x in the example of illustration) is approximately equal to the flow of the reductant No. 2 or the flow of the entire processed product. It is preferable to comprise so that it may become a right angle and inclines with respect to the oscillation direction of the oscillation sorting shelf 20 by planar view. As a result, the flow direction of the processing material and the rotational direction of the float 97 in contact with or close to the same, so that the float 97 operates smoothly, and reacts accurately and sensitively to changes in the processing amount. do.

In this case, in order to make the operation of the float 97 smoother, the float 97 may be disposed on one side of the rotation center in the float 97, in particular, on the downstream side in the conveying direction of the moving shelf 22 as shown in the example. It is also a preferable form to erect the pull-up plate 98 which extends in a direction substantially perpendicular to the rotation center (approximately parallel to the rotation direction of the sensor float 97). As a result, even if the movement direction of the workpiece is shifted by the swinging action of the moving shelf 22, the direction of movement of the workpiece is regulated by the dragging plate 98 in the vicinity of the float 97. The rotational direction of the float 97 in contact with is substantially coincident so that the float 97 can operate more smoothly.

In addition, although the shape of the float 97 may be designed suitably, at least the part which contacts with a to-be-processed object (the surface of the movement direction upstream of a to-be-processed state in a non-contact state without a to-be-processed object in the example of illustration) is shown in the example of illustration of a to-be-processed thing. It is preferable that it is arc-shaped curved surface which protrudes about the middle part of a sliding direction.

On the other hand, generally, on the moving shelf 22, the amount of processed water is ubiquitous, and especially the amount of processed water in the lower vicinity of the 2nd processing material reducing port 43 becomes the largest. Therefore, it is preferable that the layer thickness detection sensor 95 is configured to detect the thickness of the layer of the processed object of the swing sorting shelf 20 in the vicinity of the second processed product reducing port 43. For this reason, in the example of illustration, the float 97 is arrange | positioned in the vicinity of the 2nd processed material reduction port 43a.

10: rapid 10a: rapid
10b: separation tooth 10c: receiving plate (support member)
11: threshing chamber 11F: recovery chamber
11K: Intermediate bulkhead (partition plate) 16: Fenggu
18: sorting room 19A: the number 1 collection section
19B: No. 2 collection unit 20: rocking sorting shelf
65: tuyere 66: wind direction guide member
67: upper wall 68: lower wall
74: upper air path 75: lower air path
95: layer thickness detection sensor S: interlock mechanism

Claims (5)

In the threshing chamber 11, a barrel 10 having a plurality of barrels 10a for threshing the grain stem is installed in the threshing chamber 11, and in the sorting chamber 18 disposed below the threshing chamber 11, the oscillating sorting shelf 20 ), And the air volume controllable air vent 16 which blows the sorting wind in the lower side of this rocking | spread sorting shelf 20, the 1st collection | recovery part 19A which collect | recovers 1st article, and the 2nd article which collect | recovers 2nd article In the threshing apparatus provided with the collection part 19B in this order from the front side:
The partition plate 11K is arrange | positioned close to the outer periphery of the rear part of the said barrel 10 in the said threshing chamber 11, The said in recovery chamber 11F formed in the back side of this partition plate 11K. On the outer circumferential surface of the barrel 10, a separation tooth 10b is provided for separating grains contained in the discharge straw after threshing from the discharge straw, and a portion along the lower outer circumference of the barrel 10 in the recovery chamber 11F. The threshing apparatus characterized by the above-mentioned. The threshing apparatus characterized by supporting the discharge straw after threshing and providing the guide member (10c) which guides to the action area | region of the said separation tooth (10b). The method of claim 1,
The threshing apparatus characterized by the structure which can adjust the blowing direction of the sorting wind from the said tuyere 16 up and down. The method of claim 2,
In the state in which the blowing direction of the sorting wind from the tuyere 16 is adjusted upward, a portion of the sorting wind blown from the tuyere 16 faces downward of the recovery chamber 11F of the swing sorting shelf 20. The threshing apparatus characterized by the above-mentioned structure being spouted upward from the site | part of a rear side. The method of claim 2,
The tuyere 16 is provided with a tuyere 65 formed between the upper wall 67 and the lower wall 68, a wind direction guide member 66 is provided between the upper wall 67 and the lower wall 68, The air vent 65 is partitioned into an upper air passage 74 and a lower air passage 75 by the wind direction guide member 66, and the upper wall 67 is axially rotatably supported so that its rear portion is moved up and down. The wind direction guide member 66 is axially rotatably supported so that the front side portion and the rear side portion move up and down in opposition, and the upper wall 67 and the wind direction guide member 66 in the same direction. Threshing device characterized in that the interlocking mechanism (S) for interlocking and rotating. The method of claim 4, wherein
The layer thickness detection sensor 95 which detects the thickness of the layer of the processed object on the said shaking separation shelf 20 is provided, and the process on the said shaking separation shelf 20 is based on the detection result of this layer thickness detection sensor 95. FIG. When the thickness of the water layer is increased, the rear upward inclination angle of the wind direction guide member 66 and the upper wall 67 is decreased, and the wind direction guide is performed when the thickness of the layer of the processing material on the swing sorting shelf 20 is reduced. The threshing apparatus characterized by the structure which increases the rear upward inclination-angle of the member (66) and the said upper wall (67).

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