JP5573463B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus provided for a combine or the like.

As described in Patent Document 1, as a threshing device provided for a combine or the like, a rear portion of a handling chamber is divided into front and rear portions by a partition plate, a recovery chamber is formed on the rear side of the partition plate, and a handling cylinder in the recovery chamber A technique for opening the lower side of the is known. The head part is threshed while holding and transporting the cereal base part with the cereal supply and transport device, and the grain entering the head part of the waste after threshing is separated and collected in the collection chamber. Is.
In addition, as described in Patent Document 2, in the air outlet of Karatsu, a wind direction guide member is provided between the upper wall and the lower wall, and an upper air path is formed between the upper wall and the wind direction guide member, A technique for forming a lower air path between a wind direction guide member and a lower wall is known. By rotating the wind direction guide member up and down, the air blowing direction of the sorting air from the tang is adjusted up and down.

No. 8-6435 JP-A-7-274696

However, in the technique described in Patent Document 1, since no support member is provided on the lower side of the handling cylinder in the collection chamber, the waste after threshing that is nipped and conveyed by the corn supply / conveyance device hangs down, and the handling cylinder is dropped. It becomes difficult to receive the action of. For this reason, there is a drawback in that the grains and branch-branch adhering grains that have entered the waste are taken out together with the waste to the outside of the threshing device, and the recovery efficiency of the grains is reduced.
Further, in the technique described in Patent Document 2, even though 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. The distribution ratio of the air volume in the road and the lower wind path does not change. For this reason, it is not possible to perform appropriate ventilation with respect to the threshing conditions (processed amount, crop state, etc.) that are changed in an infinite number of times, and it is difficult to maintain high sorting performance.

  Therefore, the present invention prevents the grains and shoots adhering grains that have entered into the culling after threshing from being taken out of the threshing device together with this scouring, and the upper air path and the The purpose is to maintain not only the wind direction of the side air passage but also the air volume so that the sorting performance can be maintained high, thereby increasing the grain recovery efficiency.

In order to solve the above problems, the present invention takes the following technical means.
That is, in the invention described in claim 1, a handling cylinder (10) provided with a large number of teeth handling teeth (10a) for threshing cereals is provided in the threshing chamber (11), and the lower side of the threshing chamber (11). In the sorting chamber (18) disposed in the sway, a swing sorting shelf (20) is provided, and on the lower side of the swing sorting shelf (20), there is provided an adjustable air volume (16) for blowing the sorting wind, In the threshing apparatus provided with the first thing collecting part (19A) for collecting the second thing and the second thing collecting part (19B) for collecting the second thing in this order from the front side, it is handled in the threshing chamber (11). A partition plate (11K) is arranged close to the outer periphery of the rear portion of the cylinder (10), and on the outer peripheral surface of the handling cylinder (10) in the collection chamber (11F) formed on the rear side of the partition plate (11K). Is provided with a separating tooth (10b) for separating the grains that have entered into the waste after the threshing from the waste, and in the recovery chamber (11F) That a portion along the lower periphery of the threshing drum (10), a support member for guiding and supporting the straw discharge after threshing the active area of the separation teeth (10b) (10c) provided, from the winnowing fan (16) The vertical direction of the sorting air can be adjusted up and down, and the tang (16) is provided with a blowing port (65) formed between the upper wall (67) and the lower wall (68), and the upper wall An airflow direction guide member (66) is provided between the airflow guide member (66) and the lower wall (68), and the airflow direction guide member (66) moves the air blowing port (65) to the upper airflow path (74) and the lower airflow path (75). The upper wall (67) is pivotally supported so that the rear part thereof moves up and down, and the wind direction guide member (66) moves up and down oppositely in the front part and the rear part. An interlocking mechanism for pivotally supporting the upper wall (67) and the wind direction guiding member (66) in the same direction. ) Was threshing apparatus, wherein a is provided.
The invention according to claim 2 is provided with a layer thickness detection sensor (95) for detecting the thickness of the layer of the workpiece on the swing sorting shelf (20), and the detection result of the layer thickness detection sensor (95). In accordance with the above, when the thickness of the layer of the processed material on the swing sorting shelf (20) increases, the rearward inclination angle of the wind direction guide member (66) and the upper wall (67) is decreased, and the swing sorting shelf (20) The configuration is such that when the thickness of the layer of the processed material on the upper side decreases, the rearward inclination angle of the wind direction guiding member (66) and the upper wall (67) is increased. The threshing apparatus described was used.

According to the first aspect of the present invention, the waste after threshing is supported by the support member (10c), guided to the working area of the separating tooth (10b) of the handling cylinder (10), and enters the waste. Grains and branch accretionary grains can be separated and recovered from the waste by the action of the separating teeth (10b). At this time, since the front side of the collection chamber (11F) is partitioned by the partition plate (11K), processing of swarf and the like threshed in the threshing chamber (11) on the front side of the partition plate (11K) A thing does not easily enter the collection chamber (11F), and the collection efficiency of the grains in the collection chamber (11F) increases.
In addition , for example, when the processed material on the swing sorting shelf (20) is increased by the grains or sawdust dropped from the threshing chamber (11) or the recovery chamber (11F), the sorting wind from the Karatsu (16) By adjusting the air blowing direction downward, the sorting wind passes through the top of the first object recovery part (19A) and flows backward, so that the waste that leaks from the swing sorting shelf (20) is the first. It becomes difficult to be collected by the object collection unit (19A), and the sorting accuracy is improved. In addition, the sorting wind flowing backward facilitates the transfer of the processed material on the swing sorting shelf (20), and facilitates the discharge of sawdust from the rear end of the swing sorting shelf (20). The sorting load on the swing sorting shelf (20) is reduced, and the efficiency of the threshing work is increased. Moreover, when the processed material on the rocking sorting shelf (20) decreases, the processed material on the rocking sorting shelf (20) is adjusted by adjusting the blowing direction of the sorting air from the red pepper (16) upward. Is not promoted, and it becomes difficult for the grains to scatter together with the sawdust from the rear end of the swing sorting shelf (20) to the outside, so that the recovery efficiency of the grains can be improved. Moreover, even if a part of this sorting wind blows up toward the recovery chamber (11F) by adjusting the blowing direction of the sorting wind from the tang (16) upward, the sorting wind is supported by the support member (10c). ), The grain falls smoothly from the collection chamber (11F), and the grain collection efficiency is further increased.
And , for example, when the amount of processed material on the swing sorting shelf (20) is increased by the grains and sawdust dropped from the threshing chamber (11) and the recovery chamber (11F), The upper wall (67) and the wind direction guide member (66) provided in 65) are rotated downward by the interlocking mechanism (S), and the lower air passage (75) is opened to blow air from the lower air passage (75). In addition to increasing the volume of the selected wind and adjusting the blowing direction of the sorted wind blown from the upper air passage (74) downward, this sorted wind passes above the first object recovery section (19A). Since the waste flows from the swing sorting shelf (20), it becomes difficult for the most waste collecting portion (19A) to collect the waste and the sorting accuracy is improved. In addition, the sorting wind flowing backward facilitates the transfer of the processed material on the swing sorting shelf (20), and facilitates the discharge of sawdust from the rear end of the swing sorting shelf (20). The sorting load on the swing sorting shelf (20) is reduced, and the efficiency of the threshing work is increased. Further, when the amount of processed 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 path ( 75) is closed to reduce the selected air blown from the lower air passage (75), and to swing by adjusting the blowing direction of the selected air blown from the upper air passage (74) upward. The transfer of the processed material on the sorting shelf (20) is not promoted, and the grains are less likely to be scattered from the rear end of the rocking sorting shelf (20) together with the sawdust, so that the efficiency of collecting the grains can be increased. .
According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1, the upper wall (67) and the upper wall (67) By controlling the tilting posture of the wind direction guide member (66), the sorting accuracy, the threshing efficiency, and the grain recovery rate can be increased.

It is a left view of a combine. It is a top view of a combine. It is a front view of a combine. It is a rear view of a combine. It is a side view for explanation which shows a threshing device in a longitudinal section. It is a principal part enlarged view of FIG. It is a top view for explanation which shows a threshing device in a horizontal section. It is a top view for explanation which shows a threshing device in a horizontal section at another position. It is a top view for description which shows and shows a part of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is an enlarged view of the interlocking mechanism part of an upper wall and a wind direction guide member. It is a side view for explanation which shows the threshing device in a state where the inclination angle of the upper wall and the wind direction guide member is maximized. It is a side view for description which shows the threshing apparatus in the state which made the inclination | tilt angle of an upper wall and a wind direction guide member the minimum, and is shown longitudinally. It is a front view of an 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, although it showed and demonstrated the direction for convenience, the structure is not limited by these.

  1 to 4, reference numeral 1 is a combine body frame, reference numeral 2 is a traveling device having a pair of left and right crawlers, reference numeral 3 is a threshing device provided above the body frame 1, and reference numeral 4 is a front side of the threshing device 3. The provided cutting part, the reference numeral 6 is a Glen tank provided at the side of the threshing device 3, the reference numeral 6 is a control part provided in front of the Glen tank 5, and the reference numeral 7 is a discharge pipe for discharging the stored grains in the Glen tank. Respectively.

  As shown in FIGS. 5 and 8, the threshing device 3 includes a threshing chamber 11 at the top, and includes a cereal supply and transport device 12 on one side of the threshing chamber 11 (for example, the left side in the machine traveling direction). . The grains that have been run by the traveling device 2 and are harvested by the cutting unit 4 are taken over by the grain supply and transport device 12 and are sandwiched between the basket 13A of the grain supply and transport device 12 and the supply and transport chain 13B. After being transported backward in the state, it is handed over to the waste transporting device 14 for transporting the threshed waste.

(Threshing room and recovery room)
As shown in FIG. 5, in the threshing chamber 11, a handling cylinder 10 is mounted substantially horizontally. The lower side of the handling cylinder 10 is surrounded by a handling net 15, and below the handling net 15. Is provided with a tang casing 16 of tang 16. A large number of teeth 10 a are provided on the outer peripheral surface of the barrel 10.
As shown in FIGS. 5, 8, 9, and 10 to 12, an intermediate partition wall (partition plate) disposed in the vicinity of the rear outer periphery of the handling cylinder 10 is located at the downstream side (rear part) of the threshing chamber 11. ) 11K is provided, and in the front side of the intermediate partition wall 11K, the dust removal processing chamber introduction portion 11E partitioned by the intermediate partition wall 11K is formed. The bottom surface of the dust removal chamber introduction portion 11E is formed in a lattice shape, and forms a dust discharge port 11H for dropping to the swinging sorting shelf 20 below. The downstream end (rear end) of the handling cylinder 10 passes through the intermediate partition 11K and extends into the recovery chamber 11F formed on the rear side of the intermediate partition 11K. This intermediate partition 11 </ b> K is fixed to the machine frame of the threshing chamber 11. On the outer peripheral surface of the handling cylinder 10 in the collection chamber 11F, a large number of plate-like separating teeth for scraping (or scraping off) the grains stuck in the threshing grains after threshing (removal) 10b is provided. In addition, the rear end portion of the rotating shaft 10 </ b> S of the handling cylinder 10 is supported by the rear side wall 11 </ b> L disposed on the rear side of the rear end of the handling cylinder 10.
Further, as shown in FIG. 12, a receiving plate (supporting member) 10c formed in an arc shape is disposed along the lower outer periphery of the handling cylinder 10 in the collection chamber 11F. The receiving plate 10c supports the cereal after threshing, and guides the cereal into the rotation trajectory (operation area) of the separating tooth 10b. This receiving plate 10c is provided only in the range that supports the part on the side of the stock of the cereal, and is not provided on the tip side of the cereal. That is, the receiving plate 10c is provided in a range from the cereal supply / conveyance device 12 side to a position substantially directly below the shaft core 10P of the rotating shaft 10S of the handling cylinder 10, and the rear side of the threshing chamber 11 from the shaft core 10P. The receiving plate 10c is not provided at the site. Thereby, the site | part between the back | inner side edge part of the receiving plate 10c and the dust removal process chamber 30 is open | released below over the open width T. As shown in FIG.
Further, as shown in FIG. 9, the receiving plate 10c is formed with a number of long holes 10d inclined by an angle θ with respect to the direction of the axis 10P of the handling cylinder 10 in plan view. And this receiving plate 10c not only supports the grain mash after threshing but also promotes the leakage of the grain from the long hole 10d by blocking the sorting wind blown from the tang 16 described later.

  Thus, the handling depth of the culm harvested by the reaping unit 4 is adjusted, and the tip side is inserted into the threshing chamber 11 while being nipped and conveyed by the cereal supply and transfer device 12. The cereal grains supplied to the threshing chamber 11 are threshed by the action of the tooth handling 10a of the rotating barrel 10, and the threshed grains fall from the handling net 15 and are supplied to the sorting chamber 18, and the swing sorting device 21 Sorted by Of the processed products threshed in the threshing chamber 11, processed products that do not leak from the handling net 15 reach the dust disposal chamber introduction section 11 </ b> E at the rear of the threshing chamber 11, and then are supplied to the dust disposal chamber 30 from the communication port 35. Then, it is processed by the dust removal processing cylinder 31 built in the dust removal processing chamber 30.

Moreover, in the cereal mash that has been threshed at the site in front of the recovery chamber 11F in the threshing chamber 11, grains shed in the threshing chamber 11 and shoot branches adhering grains are contained, The branch rachis adhering grains pass through the space formed on the lower side of the intermediate partition wall 11K together with the threshing grains after threshing. Then, the threshed culm that has reached the collection chamber 11F is supported on the receiving plate 10c and is subjected to the action of a large number of separating teeth 10b provided on the outer peripheral surface of the handling cylinder 10, and this culm The grains and shoots adhering to the plant fall off and are separated. At this time, since the front side of the recovery chamber 11F is partitioned by the partition plate 11K, the processed product threshed in the threshing chamber 11 on the front side of the partition plate 11K is recovered from the dust collection chamber introduction portion 11E. It is difficult to enter the chamber 11F, and the grain collection efficiency in the collection chamber 11F is increased.
After the fallen grains and branch stick-attached grains fall from the portion of the open width T, the rear end portion of the receiving plate 10c, and the long holes 10d onto the lower swing sorting shelf 20, and are sorted, The grain is taken into the first object recovery unit 19A and stored in the Glen tank 5.

(Sorting room)
As shown in FIG. 5, a sorting chamber 18 is formed below the threshing chamber 11 for sorting grains and foreign matter by blowing air from the red pepper 16. A swing sorting device 21 constituted by a swing sorting shelf 20 swinging back and forth (in the front-rear direction) is provided.

(Oscillating sorting shelf, red pepper, shelf board, etc.)
As shown in FIG. 6, the start end portion (front end portion) of the swing sorting shelf 20 is formed as a transfer shelf portion 22 located above the hot casing 17. The configuration of the transfer shelf portion 22 is arbitrary, and the downstream side in the transfer direction is inclined low, or the upper surface of the transfer shelf portion 22 is provided with protrusions and irregularities so that the swing sorting device 21 is located downstream in the transfer direction. What is necessary is just to be able to transfer the leakage from the handling net 15 toward the grain sieve 23.

  The grain sieve 23 is a sieve for selecting foreign matter such as grains and sawdust leaked from the handling net 15, and in the illustrated example, a thin plate-like body inclined so that the downstream side (rear side) in the transfer direction becomes higher. A plurality of them are juxtaposed at predetermined intervals in the swinging direction. A chaff sheave 24 for selecting grains and chaff (swarf) is provided on the downstream side (rear side) of the grain sheave 23 in the transfer direction. In the illustrated example, the chaff sheave 24 is formed by arranging a plurality of thin plate-like bodies with adjustable inclination angles at predetermined intervals in the swinging direction. Further, on the downstream side of the chaff sheave 24, a Strollac 25 is provided as a rough sorting means for sorting the grains (stabbed grains) and the like that have been stuck in the waste passed through the threshing chamber.

  In the lower part of the sorting chamber 18, there are a tang 16, a grooved first shelf 19 </ b> A (first thing collection part), and a grooved second shelf 19 </ b> B (second thing collection part). They are provided in this order in the 20 transfer directions (from front to back). The tang 16 has a blower opening that faces between the swing sorting shelf 20 and the first shelf 19A. The first conveyor 26 communicating with the Glen tank 5 communicates with the groove portion of the first shelf plate 19A, and the second conveyor 27 communicating with the second processing chamber 30 communicates with the groove portion of the second shelf plate 19B. Yes. Further, a sorting net 28 is provided between the swing sorting shelf 20 and the first shelf 19A so as to extend from the vicinity of the boundary between the Glen sheave 23 and the chaff sheave 24 to the vicinity of the shelf 19C of the first shelf 19A. Yes.

  Since the swing sorting shelf 20 swings in the up and down and front and rear directions by a drive mechanism (not shown), the processed material is subjected to wind sorting while receiving air from the Karatsu 16 while moving backward, and the grain having a high specific gravity is the grain sieve 23. Then, the chaff sheave 24 is leaked and supplied to the sorting net 28, and the processed material on the sorting net 28 is further transferred to the rear side while receiving fine sorting air from the tang 16 and blowing fine swarf off. What has leaked from the sorting net 28 during this transfer is collected by the first shelf 19A and is put on the first conveyor 26 and put into the Glen tank 5. The grain stored in the Glen tank 5 is carried out of the combine through the discharge pipe 7. As described above, the processed material that leaks from the sorting net 28 and is collected by the first shelf 19 </ b> A is mainly cereal grains (clean grains) that have little branch raft adhesion.

  On the other hand, those that do not leak from the sorting net 28 are transported rearward on the sorting net 28, reach the second shelf 19B from the rear end of the sorting net 28, and are collected. The processed products supplied to the second shelf 19B without leaking from the sorting net 28 are mainly branch rachis adhering grains and small shavings.

  Of the processed materials on the rocking sorting shelf 20, lightweight ones do not leak the sheaves 23, 24, but are blown off by the rocking action of the rocking sorting shelf 20 and the air blown by the tangs 16. The second item having a small size leaks on the Strollac 25 and is collected by the second shelf 19B. It leaks from the rear portions of the sheaves 23 and 24 and the stroller 25 and is supplied to the second processing chamber 40 by the second conveyor 27. What is taken in by the second conveyor 27 is a mixture of normal grains, shoots adhering grains, swarf and stabbed grains in which normal grains are stabbed in swarf. These peduncle adhering grains and sawdust are reprocessed as the second reduced product. Further, the processed material that does not leak from the sheaves 23 and 24 and the stroller 25 is further transferred rearward and discharged to the outside from a third dust outlet 56 formed on the rear end portion of the swing sorting shelf 20. . Some grains may be contained in this, and the selection accuracy of the threshing apparatus is evaluated by this amount (ratio).

(Dust disposal chamber)
As shown in FIGS. 8, 9, 11, and 12, the dust exhausting chamber 30 communicated with the threshing chamber 11 through the communication port 35 has a dust exhaust substantially parallel to the axis of the handling cylinder 10. A processing cylinder 31 is mounted on the shaft. The side opposite to the swing sorting shelf 20 of the dust removal processing cylinder 31 (left side facing the front) is surrounded by a side plate 32, and the swing sorting shelf 20 side (right side facing the front) of the dust removal processing cylinder 31 is treated. A discharge port 33 is provided. A blade body 34 is provided at the end portion (rear end portion) in the transfer direction of the processed material on the outer peripheral surface of the dust removal treatment cylinder 31, and dust removal treatment teeth 36 are provided at the start end side of the blade body 34. .

  The processed product supplied to the dust processing chamber 30 is discharged from the processed product discharge port 33 onto the swing sorting shelf 20 in the process of moving to the terminal side while being crushed and processed by the rotating dust processing cylinder 31. Further, the end of the dust removal processing chamber 30 is closed, and the processed material reaching here is discharged onto the strola rack 25 of the swing sorting shelf 20 by the blades 34, and these discharged processed products are swung and sorted. The grain is collected by the shelves 20, and the sawdust and the like are discharged out of the machine. The processed material supplied to the dust removal processing chamber 30 contains a small amount of grain with attached branch stems, and the branch leaf attached grains and small shavings are oscillated and sorted from the processed product outlet 33. It falls on the shelf 20.

(Second processing room)
As shown in FIGS. 8, 9, and 10, a second processing chamber 40 for processing the second object collected by the second conveyor 27 is provided on the front side of the dust removal processing chamber 30. In the second processing chamber 40, a second processing cylinder 41 having intermittent spiral blades on the outer peripheral surface is mounted coaxially and in series with the dust removal processing cylinder 31. The lower part of the second processing cylinder 41 is surrounded by a groove-shaped receiving plate 42 except for the terminal part thereof, and the lower part of the terminal part (front end part) 9 of the second processing cylinder 41 is the second processing object return port. 43 is opened above the side of the second processing chamber 40 on the upstream side of the swing sorting shelf 20. Further, a supply port 44 for a second object supplied from the second conveyor 27 is opened above the start end side (rear end side) of the second processing cylinder 41.

  In the second processing chamber 40, after the separation of the grain and the removal of the branch leaf from the branch leaf adhering grain while the second thing is being conveyed by the second processing cylinder 60, the second processing material reduction port 43 is obtained. Then, it falls onto the swing sorting shelf 43 and merges with the processed material from the handling chamber 40 to be re-sorted.

(Suction dust exhaust fan)
As shown in FIG. 6, a dust suction port 44 of the suction dust exhaust fan 43 is opened above the end portion (rear end portion) of the swing sorting shelf 20. The suction dust exhaust fan 43 is covered with a casing 45 having an air exhaust port 46. In the illustrated example, a suction dust exhaust fan 43 is attached to a side wall of the upper space of the swing sorting shelf 20 on the side opposite to the dust disposal chamber 30 so as to face the dust disposal chamber 30. Although the dust suction port 44 is open in the part, these attachment positions are not limited to the illustrated example.

(Exhaust treatment device)
As shown in FIG. 8 and FIG. 9, on the rear side of the threshing device 3, the cereal that has passed through the threshing chamber, that is, the waste, is handed over to the waste transporting device 14, and the terminal portion of the waste transporting device 14. Is discharged to a cutter device 48 as a waste disposal device. An intermediate portion of the stock-side transport device 14K provided in the waste transport device 14 includes a transmission belt 10U, an input pulley 10V, and a bevel gear case from a pulley 10T attached to the rear end portion of the rotary shaft 10S of the handling cylinder 10. Power is transmitted through a transmission mechanism within 10 W and an output shaft 10 </ b> X provided penetrating the tip side transport device 14 </ b> H parallel to the stock source side transport device 14 </ b> K. Then, power is transmitted from the rear end portion of the stock source side transport device 14K to the rear end portion of the tip side transport device 14H via the transmission shaft 10Y.
The cutter device 48 has a structure in which the waste dropped from above is cut between a pair of rotary cutter blades 49. The outer side of the rotary cutter blade 49 is covered with a hood, and on the front side of the rotary cutter blade 49 is a cutting guide plate 50 for guiding the cut waste of the cut waste to fall backward. Is provided. The upper part of the cutting guide plate 50 is located at substantially the same height as the lower part of the upper cutter blade 49, and is inclined downward so as to be located on the rear side as it goes downward. Is located below the lower part of the lower cutter blade 49. Instead of the cutter device 48, another waste disposal device can be used.

(No. 3 dust outlet)
As shown in FIGS. 6 and 7, a third dust outlet 56 is opened in the rear side wall 55 of the threshing device 3, and the rear part of the swing sorting shelf 20 faces this third dust outlet 56. It is configured. Further, a third dust outlet shutter 57 that opens and closes the third dust outlet 56 is provided, and the grains contained in the dust treated product discharged from the treated product outlet 33 of the dust treating chamber 30 are Without being discharged from the third dust outlet 56, it can be supplied to the chaff sheave 24 or the stroller rack 25 of the swing sorting shelf 20 and recovered by sieve sorting. Therefore, the occurrence of third loss can be prevented and the threshing efficiency can be improved. Further, the dust collection chamber 30 and the dust suction port 44 of the suction dust exhaust fan 43 are arranged so as to face each other with the swing sorting shelf 20 interposed therebetween. Since the treated waste product discharged from the processing chamber 30 diffuses widely toward the suction port 44 side of the suction dust exhaust fan 43, the grain collection efficiency is further improved.

(Upper wall / wind direction guide member)
As shown in FIG. 6, the air outlet 65 of the Kara casing 17 is opened between an upper wall 67 positioned above and a lower wall 68 positioned below, and the upper and lower middles of the upper wall 67 and the lower wall 68. A wind direction guide member 66 is provided on the front side. As a result, the air outlet 65 is partitioned into an upper air passage 74 between the wind direction guide member 66 and the upper wall 67 and a lower air passage 75 between the air direction guide member 66 and the lower wall 68. Although the upper wall 67 and the lower wall 68 are plate-shaped in the illustrated example, they are not limited to this.

  As shown in FIGS. 6 and 13, the wind direction guide member 66 has a shape having an inverted triangular longitudinal section having a vertex 70 below. As a result, the upper surface 69 of the wind direction guiding member 66 in the illustrated example is formed by a flat surface that is inclined substantially the same as the upper wall 67 of the tang casing 17, and the lower surface of the wind direction guiding member 66 is the lower front inclined surface 71 and the lower rear portion. It is formed by a bent surface having an inclined surface 72. When the airflow direction guide member 66 has such a shape, the wind sent from the upper airflow path 74 does not diffuse much downward along the upper surface of the airflow direction guide member 66 and moves toward the swing sorting shelf 20. The wind sent from the lower air passage 75 flows toward the further downstream side of the swing sorting shelf 20 while diffusing upward along the lower rear inclined surface 72 of the airflow direction guide member 66. It becomes like this.

  The wind direction guide member 66 is rotatable within an angular range in which a horizontal rotation shaft 66x perpendicular to the air blowing direction is a rotation center, and the upper surface 69 and the lower surfaces 71 and 72 are obliquely upward toward the downstream side of the air blowing direction. Further, the rotation shaft 66x of the wind direction guide member 66 is located in the middle of the air blowing direction of the wind direction guide member, and rotates so that the upstream side and the downstream side of the rotation shaft 66x are moved up and down. It has become. Both ends of the rotating shaft 66x of the airflow direction guide member 66 are pivotally supported on both side walls 18S of the sorting chamber 18. Further, when the inclination angle of the wind direction guide member 66 with respect to the horizontal plane (hereinafter simply referred to as an inclination angle or an inclination posture) is increased to the maximum by the rotation of the wind direction guide member 66, the end of the wind direction guide member 66 on the side of the tang 16 Is configured to approach or contact the lower wall 68 of the air outlet 65.

  Further, the upper wall 67 also has the same direction as the airflow direction guide member 66 within an angle range in which the horizontal rotation shaft 67x orthogonal to the air blowing direction is a rotation center and the lower surface is obliquely upward toward the air flow direction downstream side. It is comprised so that it may rotate. That is, the rear lower surface of the upper wall 67 and the rear upper surface of the wind direction guide member 66 are connected by the interlocking rod 88, and the angle is changed up and down while the upper wall 67 and the wind direction guide member 66 maintain a substantially constant relative posture. A possible interlocking mechanism S is configured. Further, in the illustrated example, the rotation shaft 67x of the upper wall 67 is located at the end of the upper wall 67 on the side of the tang 16, but can also be located at the middle of the blowing direction or at the downstream side of the blowing direction. In any case, it may be rotated so that the downstream side of the upper wall 67 moves up and down. Both ends of the rotation shaft 67x of the upper wall 67 are also pivotally supported on both side walls 18S of the sorting chamber 18.

  In such a structure, the distribution ratio of the wind supplied from the tang 16 to the upper air passage 74 and the lower air passage 75 is determined by the ratio of the opening degrees of the upper air passage 74 and the lower air passage 75. Therefore, when the upper wall 67 and the wind direction guide member 66 are rotated in the same direction in the 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, While the air volume of the path 74 increases, the wind direction of the lower air path 75 changes according to the change in angle of the lower surface of the wind direction guide member 66, and the wind direction of the upper air path 74 changes according to the change of the angle of the lower surface of the wind direction guide member 66. Change. On the other hand, when the upper wall 67 and the wind direction guide member 66 rotate in the same direction in the direction in which the degree of opening of the lower air passage 75 increases, the air volume in the lower air passage 75 increases, and conversely, The air volume in the path 74 decreases. The wind direction of the lower air path 75 changes according to the change in angle of the lower surface of the wind direction guide member 66, and the wind direction of the upper air path 74 changes according to the change in 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 passage 74 and the lower air passage 75 can be adjusted simultaneously.

  The driving 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. The power source may be used. In the example shown in FIG. 13, one end portion of the rotation shaft 66x of the wind direction guiding member 66 protrudes from the side wall 18S of the sorting chamber 18, and the tip end portion of the main swinging rod 81 is attached to this protruding portion. The moving shaft 81 and the wind direction guide member 66 are configured to rotate integrally. A stay 82 is attached to the outer surface of the side wall 18S of the sorting chamber 18, a pinion gear 83g is attached to a drive shaft 83x of a motor 83 mounted on the stay 82, and a fan-shaped gear 84 that meshes with the pinion gear 83g is a stay 82. The circumferential end (first eccentric position) on one side of the fan gear 84 and the base end of the main swing rod 81 are connected via an interlocking rod 85, and each connecting portion is The pin 85p is free to rotate. Further, a rotation amount detection device 86 such as a potentiometer is mounted on the stay 82, and the tip end portion of the auxiliary swing rod 87 is attached to the detection shaft 86 x of the rotation amount detection device 86. The rotation amount is detected, and a pin 87p protrudes from the circumferential end (second eccentric position) on the opposite side of the fan-shaped gear 84. It is configured to slide in the groove 87d along the longitudinal direction. In addition, a portion of the wind direction guide member 66 that is downstream of the rotation shaft 66x in the air blowing direction and a portion of the upper wall 67 that is downstream of the rotation shaft 67x in the air blowing direction are interlocking rods 88 on both sides in the sorting chamber 18. Are connected to each other, and each connecting portion is freely connected by a pin 88p.

  Therefore, forward / reverse driving of the motor 83 causes the wind direction guide member 66 to rotate forward and backward via the fan gear 84, the interlocking rod 85, and the main swing rod 81, and the amount of rotation is determined by the fan gear 84 and the auxiliary swing. The rotation amount is detected by the rotation amount detection device 86 via the oscillating rod 87. Further, as the wind direction guide member 66 rotates, the upper wall 67 connected thereto via the interlocking rod 88 also rotates in conjunction with it. Therefore, the wind direction guide member 66 and the upper wall 67 can be simultaneously rotated in the same direction, and can be adjusted to predetermined angles, respectively, so that the adjustment operation is facilitated.

  The inclination angle of the airflow direction guide member 66 and the upper wall 67 (also simply referred to as the inclination angle or the inclination attitude) with respect to the horizontal plane can be appropriately changed within the above-mentioned range. A sheave (chaff sheave 24; may be a sorting net 28 in the illustrated example) of the swing sorting shelf 20 is directed upstream from the downstream (rear) end, and the majority of the sorting wind from the lower air passage 75 is a sheave ( It is preferable to set the inclination angle range of the wind direction guide member 66 and the upper wall 67 so as to face the downstream side of the chaff sheave 24) downstream side (rear side). Within this range, by changing the inclination angle of the wind direction guide member 66 and the upper wall 67, even if the flow rate of the processed material is a low flow rate state (low flow rate), a high flow rate state (high flow rate). Even if it exists, more appropriate selection can be performed, and grain loss can be reduced and selection can be improved.

In particular, as shown in FIG. 13, the sorting wind of the upper wind path 74 and the lower wind path 75 is oscillating and sorted together with the sorting wind of both the wind paths 65A and 65B as the inclination angle of the wind direction guide member 66 is increased. It is preferable that the airflow to the upstream side (front side) of the shelf 20 is increased and the airflow to the downstream side (rear side) is reduced. As shown in FIG. 14, it is more preferable that the air volume of the upper air path 74 is larger than the air volume of the lower air path 75 when the inclination angle of the wind direction guiding member 66 is maximized. Further, when the inclination angle of the wind direction guide member 66 is maximized, the blowing direction extension line 66L on the upper surface of the wind direction guide member 66 is positioned above the shelf tip 19C of the first shelf plate 19A in the side view, and the first shelf. It is preferable to increase the sorting wind toward the upstream side (forward) of the swing sorting shelf 20 from the shelf tip 19C of the plate 19A. This also causes the sorting air blown from the tang 16 to blow upward from a site on the rear side of the site on the swing sorting shelf 20 facing below the collection chamber 11F.
Thus, for example, when the flow rate is low or when the work speed is low, the sorting air on the downstream side of the oscillating sorting shelf 20 is reduced to reduce scattering outside the machine, and the sorting wind toward the upstream side of the oscillating sorting shelf 20 is increased. Therefore, it is possible to limit leakage of severance and branching leaf adhering grains and to keep the sorting state good. In addition, the grains falling from the collection chamber 11F are less likely to be blown backward by the sorting wind blown from the top of the swing sorting shelf 20, and the grains are scattered from the rear end of the swing sorting shelf 20 to the outside. It becomes difficult and the collection 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 the angle is maximized, the dust suction port 45 of the dust exhaust fan 43 opens on the blowing direction extension line 66L on the upper surface of the wind direction guide member 66 in a side view. (In other words, the extension line 66L intersects the dust suction port 45). As a result, the dust blown up in the front can be efficiently sucked by the dust exhaust fan 43, and the selected wind is difficult to escape to the rear of the machine body (particularly in the case of having the third dust outlet shutter 57 as shown in the example). The dust can be effectively discharged outside the machine without impairing the sorting ability.

  Further, as shown in FIG. 15, the sorted winds of the upper wind path 74 and the lower wind path 75 are oscillating and sorted together with the sorted winds of both the wind paths 65A and 65B as the inclination angle of the wind direction guide member 66 is reduced. It is preferable that the wind direction is changed to the downstream side of the shelf 20 to reduce the air volume of the upper air path 74 and increase the air volume of the lower air path 75. When the inclination angle is minimized, it is more preferable that the air volume in the lower air path 75 is larger than the air volume in the upper air path 74. When the inclination angle is minimized, the air blowing direction extension line 66L on the upper surface of the airflow direction guide member 66 is positioned at the shelf tip 19C of the first shelf plate 19A and the vicinity thereof, and goes toward the shelf tip 19C of the first shelf plate 19A. It is preferable to increase the sorting wind. This facilitates the removal of the sorting air from the sorting chamber to the outside of the machine during high speed work or high flow rate, suppresses the amount of reduction, and enhances adaptability to high speed work.

  The amount of change in the inclination angle of the wind direction guide member 66 and the upper wall 67 may be the same, but may be different. For example, as shown in FIG. 14 and FIG. 15, when the inclination angle of the wind direction guide member 66 is rotated from the maximum state to the minimum state, the wind direction with respect to the rotation amount of the front end of the upper wall 67 (the Karatsu 16 side). When the amount of rotation of the front end of the guide member 66 is increased, the amount of rotation of the front end of the upper wall 67 (on the side of the tang 16) is relatively reduced, so that the wind direction is maintained without impairing the air volume of the upper air passage 74. In addition, since the amount of rotation of the front end of the wind direction guide member 66 is relatively large, the distribution ratio of the selected air to the upper air passage 74 and the lower air passage 75 can be greatly changed, and both air passages can be changed. Since the wind direction can also be changed, it is preferable.

  Although the upper limit (upper limit angle) and lower limit (lower limit angle) of the inclination angle of the wind direction guide member 66 and the upper wall 67 may be fixed, the appropriate inclination angle range of the wind direction guide member 66 varies depending on the crop condition and the crop type. It is preferable to be able to change continuously 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 arbitrary angles, and it is also preferable that the upper limit angle and the lower limit angle can be automatically changed to a predetermined angle depending on the crop type. More preferably, the two can be switched. In the case of manual adjustment, when the combine is used, it is optional if the preset upper and lower limit angles do not match the crop conditions (for example, the amount of water in the crop, the degree of lodging of the crop, the increase or decrease in the amount of processed material) It can be corrected. On the other hand, in the case of automatic change, the upper limit angle and the lower limit angle can be switched according to the crop type in advance, such as rice and wheat, so that the upper limit angle and the lower limit angle can be easily switched according to the crop type, Appropriate sorting can be performed. For example, wheat has a smaller grain ratio in the processed amount than rice, and even if the flow rate is the same, the upper limit of the inclination angle of the wind direction guide member 66 is made shallow so as to increase the discharge efficiency outside the machine, thereby increasing the processing efficiency. Is preferred.

  FIG. 16 shows an example of an operation panel for changing the upper limit angle and the lower limit angle of the wind direction guide member 66 and the upper wall 67. In the vicinity of the opening degree adjustment of the sheave, the switching rotary switch 91, the opening degree The adjustment rotary switch 92 is provided in parallel, and the upper limit angle and the lower limit angle of the wind direction guide member 66 and the upper wall 67 are set according to each crop type by setting the switching rotary switch 91 to “rice” or “wheat”. Is automatically changed, and when the switch rotary switch 91 is set to “manual”, the upper limit angle and the lower limit angle of the wind direction guide member 66 and the upper wall 67 are set to arbitrary angles determined according to the rotation position of the opening degree adjustment rotary switch 92. Be changed.

  The upper limit angle and the lower limit angle of the wind direction guide member 66 and the upper wall 67 may be set mechanically. However, as described above, the rotation of the wind direction guide member 66 and the upper wall 67 is controlled by a drive source such as a motor. When performing, it is desirable to carry out by the drive control.

(Layer thickness detection sensor)
The inclination angle of the airflow direction guide member 66 and the upper wall 67 may be fixed regardless of the amount of processed material on the swing sorting shelf 20. However, the appropriate wind direction and air volume in wind sorting differ depending on the amount of processed material. For example, when the flow rate is low or the speed is low, the sorting air on the downstream side of the oscillating sorting shelf 20 is reduced to reduce scattering outside the machine, and the sorting wind toward the upstream side of the oscillating sorting shelf 20 is increased. It is preferable to limit the leakage of cuts and shoots, etc., and at the time of high-speed work or high flow rate, it promotes the removal of the sorting air from the sorting room to the outside of the machine, suppresses the amount of reduction, and enables high-speed work. It is preferable to increase adaptability. Therefore, when the inclination angles of the wind direction guide member 66 and the upper wall 67 are fixed regardless of the amount of the processed material, the sorting ability may be reduced due to the increase or decrease of the processed material amount.

  Therefore, as shown in FIGS. 7, 10, and 14, a layer thickness detection sensor 95 that detects the thickness of the layer of the processed material on the swing sorting shelf 20 is provided. Based on this, when the thickness of the processed layer is increased, the inclination angle of the wind direction guiding member 66 and the upper wall 67 with respect to the horizontal plane is increased, and when the thickness of the processed layer is decreased, the wind direction guiding member 66 and the upper wall are increased. It is preferable to provide a control device (not shown) that reduces the inclination angle of 67 relative to the horizontal plane. Thereby, even if there is an increase or decrease in the thickness of the layer of the processed material, the inclination angle of the wind direction guide member 66 and the upper wall 67 is appropriately set according to the detection result of the layer thickness of the processed material on the swing sorting shelf 20. It is automatically adjusted to obtain the optimal grain loss and sorting status.

  The layer thickness detection sensor 95 can be configured by using a known contact or non-contact sensor. In the illustrated example, the terminal side (second treatment product return port side or front end side) portion of the receiving plate 42 of the second treatment chamber 40 and the lower end portion of the intermediate partition wall 11K of the dust removal treatment chamber introduction portion 11E are provided by the sensor stay 95S. A rotation amount detection device 96 such as a potentiometer is attached to the sensor stay 95S, and a float 97 is attached to a detection shaft 96x of the rotation amount detection sensor 96 in a suspended state. The layer of the processed product moving on the transfer shelf 22 is brought into contact with the processed product moving on the transfer shelf 22 of the swing sorting shelf 20 and lifted while rotating in the moving direction of the processed product. The thickness is detected by the rotation amount detection device 96.

  In this way, the sensor stay 95S allows the end side (second treatment product return port side or front end side) portion of the receiving plate 42 of the second treatment chamber 40 and the lower end portion of the intermediate partition wall 11K of the dust removal treatment chamber introduction portion 11E. When the connecting structure is adopted, the float 97 can be installed in a suspended state while avoiding a position that obstructs the discharge and transfer of the second processed material from the second processed material reducing port 43, and the second processing chamber 40 Since the receiving plate 42, the intermediate partition wall 11K, and the sensor stay 95S can be connected in a triangular shape, there is an advantage that the machine frame 1 is strengthened.

  Further, in the case of the type in which the float 97 rotates as in the illustrated example, the rotation center of the float 97 (that is, the detection shaft 96x in the illustrated example) is approximately the flow of the second reduced product or the entire processed product. It is preferable that the configuration is such that it is a right angle and is inclined with respect to the swinging direction of the swing sorting shelf 20 in plan view. As a result, the flow direction of the processing object and the rotation direction of the float 97 contacting the same coincide with each other or close to each other, so that the float 97 operates smoothly and reacts accurately and sensitively to changes in the amount of processing object. It becomes like this.

  In this case, in order to make the operation of the float 97 smoother, with respect to the rotation center of the float 97 on one side in the rotation center direction in the float 97, particularly on the downstream side in the transfer direction of the movable shelf 22 as shown in the illustrated example. It is also a preferable form that a close-up plate 98 extending in a substantially orthogonal direction (substantially parallel to the rotation direction of the sensor float 97) is erected. As a result, even if the moving direction of the processing object shifts due to the swinging action by the moving shelf 22, the moving direction is regulated by the approaching plate 98 in the vicinity of the float 97. The rotation directions of the floats 97 that are in contact with each other substantially coincide with each other, so that the float 97 operates more smoothly.

  Further, the shape of the float 97 may be designed as appropriate, but at least a portion in contact with the processing object as in the illustrated example (the surface on the upstream side in the movement direction of the processing object in the non-contact state without the processing object in the illustrated example). However, it is preferable that it is an arc-shaped curved surface which protrudes in the middle part of the sliding direction of a processed material.

  On the other hand, the amount of processed material is generally unevenly distributed on the moving shelf 22, and the amount of processed material in the vicinity of the lower portion of the second processed material reducing port 43 is particularly large. Therefore, it is desirable that the layer thickness detection sensor 95 is configured to detect the thickness of the processed material on the swing sorting shelf 20 in the vicinity of the second processed material reducing port 43. For this reason, in the illustrated example, the float 97 is disposed in the vicinity of the second processed material reducing port 43.

10 Handle 10a Handle 10b Separating tooth 10c Back plate (support member)
11 Threshing room 11F Collection room 11K Intermediate partition (partition plate)
16 Karatsu 18 Sorting room 19A First thing collection part 19B Second thing collection part 20 Oscillating sorting shelf 65 Air outlet 66 Air direction guide member 67 Upper wall 68 Lower wall 74 Upper air path
75 Lower air passage 95 Layer thickness detection sensor S Interlocking mechanism

Claims (2)

In the sorting room (18) provided in the threshing room (11), a handling cylinder (10) provided with a large number of teeth handling teeth (10a) for threshing the cereals is disposed in the threshing room (11). An oscillating sorting shelf (20) is provided, and an adjustable amount of tang (16) for blowing the sorting wind is provided below the oscillating sorting shelf (20), and a first thing collecting unit ( 19A) and a threshing device provided with a second thing collection part (19B) for collecting the second thing in this order from the front side, a partition plate (10) on the outer periphery of the rear part of the handling cylinder (10) in the threshing chamber (11) 11K) are arranged close to each other, and on the outer peripheral surface of the handling cylinder (10) in the collection chamber (11F) formed on the rear side of the partition plate (11K), the grains that have entered the waste after threshing A separation tooth (10b) for separating the grains from the waste is provided, and a portion along the lower outer periphery of the handling cylinder (10) in the recovery chamber (11F) To the support member for guiding and supporting the straw discharge after threshing the active area of the separation teeth (10b) (10c) provided, and adjusted freely configure the blowing direction of the sorting air from the winnowing fan (16) up and down The tang (16) is provided with a blower opening (65) formed between the upper wall (67) and the lower wall (68), and the wind direction between the upper wall (67) and the lower wall (68). A guide member (66) is provided, and the air direction guide member (66) divides the air blowing port (65) into an upper air passage (74) and a lower air passage (75), and the upper wall (67) The wind direction guide member (66) is pivotally supported so that the front side portion and the rear side portion move up and down in a reciprocal manner, and the upper wall is supported. (67) and threshing instrumentation which the airstream direction guide member (66) interlocked in the same direction, characterized in that a linkage mechanism for rotating (S) . A layer thickness detection sensor (95) for detecting the thickness of the layer of the workpiece on the swing sorting shelf (20) is provided, and based on the detection result of the layer thickness detection sensor (95), the swing sorting shelf (20 ) When the thickness of the upper treatment layer increases, the rearward inclination angle of the wind direction guide member (66) and the upper wall (67) is decreased, and the treatment layer on the swing sorting shelf (20) is reduced. The threshing device according to claim 1, wherein the wind direction guiding member (66) and the upper wall (67) are configured to increase a rearward rising inclination angle when the thickness of the wind direction guide member (66) decreases .

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