JP5109947B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus.

  Conventionally, a mowing device is provided on the front side of a vehicle body provided with a traveling device, a threshing device is provided on the upper side of the vehicle body, a grain storage device is provided on the right side of the threshing device, and a handling cylinder provided with a handling cylinder on the upper part of the threshing device. A dust chamber that rotates counterclockwise as viewed from the rear of the threshing device in the dust removal chamber. The rear end of the handling chamber and the front end of the dust removal treatment chamber communicate with each other through a communication port, and a swing sorting shelf is provided below the handling chamber and the dust removal treatment chamber. A combine provided with a red pepper on the side, a first transfer spiral on the rear side of the hot pepper, a second transfer spiral on the rear side of the first transfer spiral, and a dust exhaust fan above the rear of the swing sorting shelf It has been known.

As such a combine, in Patent Document 1 below, the bottom of the rear end portion of the dust disposal chamber is opened downward, and all of the dust collected in the dust disposal chamber is swung in the threshing device. An arrangement for discharging is disclosed above.
Japanese Patent No. 2794800

  In the configuration disclosed in the above-mentioned Patent Document 1, from the rear end of the dust removal processing chamber, together with fine swarf containing grains, large swarf that has been lumped together is also discharged onto the swing sorting shelf. The For this reason, there is a problem in that the amount of the sorted matter on the swing sorting shelf increases and the grain is discharged to the outside of the threshing device together with the sawdust without sufficient sorting, resulting in a harvest loss.

  In addition, in order to solve this problem, when adopting a configuration in which the dust discharged from the dust processing chamber is directly discharged to the outside of the machine, the grain mash on the uncut land side where the dust is adjacent At the time of the harvesting operation of the culm row on the uncut ground side, the culm is harvested together with the dust, which causes an increase in threshing load and failure such as poor sorting.

  In addition, the layer of the dust discharged from the dust disposal chamber and deposited on the field scene was not uniform in the left-right direction, and the amount of sawdust in the next cultivation work was not uniform and transplanted There is a problem that the growth state of the seedlings is difficult to align.

The present invention has taken the following technical means in order to solve the above-described problems.
That is, the invention according to claim 1 is provided with a reaping device (3) on the front side of the vehicle body (1) provided with the traveling device (2), and a threshing device (4) on the upper side of the vehicle body (1). A grain storage device (G) is provided on the right side of the device (4), a handling chamber (8) having a handling cylinder (7) is provided on the upper part of the threshing device (4), and a left side of the handling chamber (8). Is provided with a feed chain (11), a dust removal chamber (18) is provided on the right side of the handling chamber (8), and the dust removal chamber (18) is counterclockwise as viewed from the rear of the threshing device (4). And a rear end portion of the handling chamber (8) and a front end portion of the dust disposal chamber (18) are communicated with each other through a communication port (R). ) And a dust sorting chamber (18), a swing sorting shelf (40) is provided, and a Kara (41) is provided below the front of the swing sorting shelf (40), and the rear side of the Kara (41). No. 1 transfer A swirl (42), a second transfer helix (43) is provided on the rear side of the first transfer helix (42), a dust exhaust fan (30) is provided above the swing sorting shelf (40), A first dust exhaust port (21) for discharging the dust to the rear upper part of the swing sorting shelf (40) is provided on the left side of the rear end of the dust exhaust processing chamber (18), and the first dust exhaust port (21). Provided with a first discharge guide plate (29) provided with a first inclined surface (29a) for guiding the dust discharged from the first dust outlet (21) to flow downward to the right and dropping it onto the field scene. In addition, a second dust exhaust port (23) for exhausting dust to the rear of the threshing device (4) is provided on the right side of the rear end of the dust exhaust processing chamber (18), and the second dust exhaust port (23) is provided. , The second inclined surface (24a) for guiding the dust discharged from the second dust outlet (23) to flow downward to the right and dropping it onto the field scene, and the second dust outlet (23). Excretion And combine, characterized in that a third inclined surface for dropping into the field surface flows down guided towards immediately following things the threshing device (4) (24b) and a second discharge guide plate provided with (24).

  With this configuration, among the processed materials that are handed over from the inside of the handling chamber (8) through the communication port (R) to the dust disposal chamber (18) and processed in the dust disposal chamber (18), The fine dust discharged from the first dust outlet (21) provided on the left side of the rear end of the dust processing chamber (18) is rotated by the rotation of the dust processing cylinder (17). It is thrown out to the rear upper part. And this dust waste material flows down on the 1st inclined surface (29a) of a 1st discharge | release guide plate (29), and falls to the farm scene on the already-cut ground side.

  In addition, a large dusty waste such as swarf is attached to the dust removal cylinder (17), and a second dust discharge port provided on the right side of the rear end of the dust treatment chamber (18) ( 23) to the rear of the threshing device (4). And this dust waste material flows down on the 2nd inclined surface (24a) and the 3rd inclined surface (24b) of a 2nd discharge | release guide plate (24), the right side of a threshing apparatus (4), and a cutting ground Fall to the side farm scene.

  The invention according to claim 2 forms a gap (K) between the first discharge guide plate (29) and the second discharge guide plate (24) in the rear view of the threshing device (4), In the gap (K), the dust discharged from the first dust outlet (23) flows down onto the swing sorting shelf (40) and flows down onto the swing sorting shelf (40). The combine according to claim 1, wherein a plurality of guide rods (28) that are separated from the dust discharged to the second discharge guide plate (24) without being disposed are arranged.

  With this configuration, the dust discharged from the first dust outlet (23) is sorted on the plurality of guide rods (28), and the grains mainly flow down to the swing sorting shelf (40) and collected. Is done. Further, dust and other dusts that do not fall from the guide rod (28) are taken over from the guide rod (28) to the second discharge guide plate (24), and the second discharge guide plate (24) It flows down on the third inclined surface (24b) or the second inclined surface (24a), and falls to the field scene.

  According to the first aspect of the present invention, the dust discharged from the first dust outlet (21) provided on the left side of the rear end of the dust disposal chamber (18), and the rear of the dust disposal chamber (18). Dust discharged from the second dust discharge port (23) provided on the right end of the end can be dropped to the field scene immediately after the threshing device (4) and on the already-cut ground side. As a result, the swarf on the swaying sorting shelf (40) is reduced, and the swaying sorting on the swaying sorting shelf (40) can be efficiently performed, and the grains in the selected matter are discharged together with the swarf to the outside of the machine. Harvesting loss can be reduced, and the accuracy and efficiency of the threshing sorting operation can be improved.

  In addition, in order to drop the dust from the dust disposal chamber (18) to the field immediately after or to the farmed scene on the already-cut ground, it is difficult for the dust to be applied to the grain on the uncut-ground side, and adjacent grain rows The re-feeding of the discharged swarf to the threshing device (4) can be suppressed at the time of cutting, reducing the increase in threshing load and the occurrence of poor sorting, and improving the efficiency of the cutting and threshing work by the combine. . In addition, since dust collected from the dust disposal chamber (18) accumulates in the state of being diffused from the right side to the field on the already-harvested land, the amount of sawdust introduced in the next cultivation work is made uniform. It is possible to easily align the growth state of the transplanted seedlings.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the grains mixed in the dust discharged from the rear end of the dust processing chamber (18) are subjected to the swing sorting shelf. (40) It can be recovered by flowing down, and the harvest loss can be further reduced.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the structure of the combine body will be described with reference to FIGS.
A mowing device 3 that can be moved up and down is provided on the front side of a vehicle body 1 having a traveling device 2 having a crawler, and a threshing device 4 is mounted on the upper side of the vehicle body 1. A grain storage device G is provided, and a waste cutter C is provided on the rear side of the threshing device 4.

  The reaping device 3 includes a weed body 3a for weeding the cereal, a pulling device 3b for causing the weed cereal, a scraping device (not shown) for scraping the induced culm, and a scraping A cutting blade device 3c that cuts away the harvested corn straw and a transport device 3d that conveys the harvested corn straw rearward and upward are provided. These devices are integrally supported by a support frame 3e that is inclined forwardly and is configured to rotate up and down around a horizontal axis provided at a rear upper end portion of the support frame 3e.

  Further, on the rear side of the reaping device 3, a control section P including a cockpit 5, a main transmission lever L, an auxiliary transmission lever M, a throttle lever N, and a steering lever O is provided. An engine E is mounted below the cockpit 5. The outside air for combustion of the engine E is sucked from the upstream air cleaner E1 protruding upward from the fuselage through the downstream air cleaner E2.

  The grain storage device G is a hopper provided with a triple grain discharge shooter G1, and below the grain storage device G on the vehicle body 1 is provided a carrier G2 on which a straw bag is placed. A fuel tank G3 is mounted on the rear portion of the carrier G2, and an auxiliary carrier G4 that can be opened and closed about an axis in the longitudinal direction of the machine body is provided outside the carrier G2. Further, a backrest G6 is attached to a support frame G5 that supports the grain storage device G so as to be rotatable up and down. This backrest G6 is for supporting the body of the auxiliary worker who has boarded on the auxiliary carrier G4.

Next, the configuration of the threshing apparatus 4 will be described based on FIGS. 4 and 5.
The handling cylinder 7 is rotatably supported inside a handling chamber 8 above the threshing device 4, and a receiving net 9 is stretched along the lower half of the handling cylinder 7. A handle cylinder cover 10 covers an upper portion of the handling chamber 8 and is attached so as to be able to swing open and close around an axis parallel to the axis direction of the handle cylinder 7.

  A feed chain 11 for sandwiching and conveying the cereal and a sandwiching rail 11a facing the upper side are provided on the handling port side of the handling chamber 8. The sandwiching rail 11a is mounted on the side of the barrel cover 10 and swings with the barrel cover 10 to open and close. A dust discharge port 12 is provided on the terminal side of the handling chamber 8 for dropping a waste treatment product including a large amount of sawdust and untreated material downward.

A second processing chamber 15 is provided on one side of the handling chamber 8 opposite to the side where the feed chain 11 is installed, and the second processing cylinder 14 is placed in the second processing chamber 15 in a counterclockwise direction when viewed from the back. Support for rotation.
In addition, a dust treatment chamber 18 is provided behind the second treatment chamber 15, and a dust treatment cylinder 17 that rotates in the same direction with the same axis as the second treatment cylinder 14 is rotated in the dust treatment chamber 18. Support freely. On the outer periphery of the dust removal processing cylinder 17, a spiral processing tooth 16 including a continuous spiral body and a processing tooth attached to the outer peripheral edge of the spiral body is attached. A grid-like dust receiving net 27 is provided so as to surround the left half of the dust processing cylinder 17.

  The lateral side portion of the rear end portion of the handling chamber 8 that is substantially in the same position in the front-rear direction as the dust discharge port 12 and the lateral side portion of the front end portion of the dust removal treatment chamber 18 are communicated with each other through the communication port R. At this communication port R, a spiral intake blade 19 fixed to the start end of the dust removal treatment cylinder 17 is faced, and the intake blade 19 allows the treatment chamber 8 to enter the dust treatment chamber 18. A configuration is adopted in which dust is taken in smoothly.

A swing sorting shelf 40 is provided below the handling chamber 8 and the dust disposal chamber 17.
The swing sorting shelf 40 receives the processed product after the threshing process from the handling chamber 8 and the dust processed product from the dust processing chamber 17 and screens them while swinging and transferring them. A transfer shelf 44, a chaff sheave 45, and a stroll rack 46 are arranged in this order from the side, and a glenshave 47 is provided below the chaff sheave 45. By the combined action of the sorting wind and the rocking by the tang 41 and the dust collecting fan 30, the processed material leaked from the handling chamber 8 and the dust collecting processing chamber 17 is received and screened while being rocked and transferred.

  In the lower part of the swing sorting shelf 40, a red pepper 41, a first transfer spiral 42, and a second transfer spiral 43 are provided in order from the upper side in the sorting direction. A flow fan type dust exhaust fan 30 is provided. Grains collected by the first transfer spiral 42 are accommodated in the grain storage device G through the first cerealing device 42a. Moreover, the 2nd thing collect | recovered with the 2nd transfer spiral 43 returns to the rear-end part of the 2nd process chamber 15 via the 2nd cerealing apparatus 43a. In the second processing chamber 15, the second item is conveyed forward while being processed by the second processing cylinder 14, and the transfer shelf 44 of the swing sorting shelf 40 from the drop port 15 a provided at the front end of the second processing chamber 15. It falls down and is sorted.

  As shown in FIGS. 1 to 3, on the outside of the outside air inlet 72 provided on the left and right sides of the red pepper 41, a shielding plate 73 for adjusting the amount of outside air sucked from the outside air inlet 72 is threshed by a rotating shaft 74. It is attached to the machine frame side of the device 4 so as to be freely rotatable. When the shielding plate 73 overlaps the outside air inlet 72, the amount of outside air sucked from the outside air inlet 72 is reduced, and the amount of the selection air blown from the tang 41 is reduced. One end of a wire 75 is attached to the opposite side of the rotating shaft 74 in the shielding plate 73, and the other end of the wire 75 is attached to the end of an arm 76 that rotates up and down integrally with the support frame 3 e of the cutting device 3. Install. With this configuration, when the harvesting device 3 is raised when the side of the field is cut and the combine is turned, the amount of the sorting wind blown from the tang 41 decreases, and the waste on the swing sorting shelf 40 It can prevent scattering to the exterior of the threshing apparatus 4 with a grain.

  As shown in FIGS. 4 to 7, on the left side of the rear end of the dust disposal chamber 17, the dust that has been sent to the rear end of the dust disposal chamber 17 is placed on a swing sorting shelf 40 described later. The first dust outlet 21 for discharging the rear upper part is opened. The first dust outlet 21 is formed by opening the rear side of the rear end of the dust receiving net 27.

  In addition, a discharge blade 20 is provided at the end of the dust removal treatment cylinder 17. In this embodiment, one discharge blade 20 is provided, but a plurality of discharge blades 20 may be provided on the outer periphery of the dust removal processing cylinder 17. As a result, fine dust such as swarf containing grains among the dust that has been sent to the first dust outlet 21 by rotating counterclockwise in the rear view of the dust disposal cylinder 17. In this case, the discharge blade 20 is used for throwing the upper part of the swing sorting shelf 40 upward.

  Further, the first dust outlet 21 is provided with a first discharge surface provided with a first inclined surface 29a that guides the dust discharged from the first dust outlet 21 downward to the right and drops it to the field scene. A guide plate 29 is provided. The first discharge guide plate 29 is provided with a base fixed to a side plate 31 of a dust exhaust fan 30 disposed above the terminal end side of the swing sorting shelf 40 and projecting toward the first dust discharge port 21 side.

  The first inclined surface 29a of the first discharge guide plate 29 is three-dimensionally inclined in the rearward and downward direction. As a result, most of the dust discharged from the first dust outlet 21 and thrown by the discharge vanes 20 is directly discharged outside the apparatus without dropping onto the swing sorting shelf 40.

  On the other hand, on the outer wall (right side plate) 22 on the right side of the rear end of the dust removal processing chamber 18, the threshing apparatus 4 is configured to remove the straw that has been sent to the end of the dust removal treatment chamber 18 or the large swarf that has been formed into a lump. A second dust exhaust port 23 for discharging backward is provided.

The second dust discharge port 23 is provided with a second discharge guide plate 24. The second discharge guide plate 24 is formed with a second inclined surface 24a and a third inclined surface 24b.
As shown in FIG. 7, the second inclined surface 24a is a part of the second discharge guide plate 24 formed by bending the plate material stepwise, and the vertical surface portion of the second inclined surface 24a is located on the right side as the rear portion. Formed on a biased guide surface. Further, the bottom surface portion of the second inclined surface 24a is refracted to change the inclined posture in a stepwise manner in order to have continuity with a third inclined surface 24b described later.

The third inclined surface 24b is inclined only in the rearward downward direction and is not inclined in the left-right direction.
As a result, almost the entire amount of the dust discharged around the rotation of the dust processing cylinder 17 and discharged from the second dust outlet 23 is directly dropped on the already cut ground without dropping onto the swing sorting shelf 40. Drop to the side farm scene. That is, the second inclined surface 24a of the discharge guide plate 24 guides the discharged dust to the right rear and drops it to the farm scene. Further, the third inclined surface 24b of the discharge guide plate 24 guides the discharged dust to the rear side in the axial direction of the dust processing cylinder 17, that is, immediately after the threshing device 4 and drops it to the field scene.

  In addition, the start end position of the second inclined surface 24 a of the discharge guide plate 24 is set to a position substantially the same as the end position of the dust collection screen 27 in the front-rear direction. As a result, the dust discharged after the spiral processing teeth 16 of the dust processing cylinder 17 and the dust receiving net 27 are diffused to the right by the second inclined surface 24a of the discharge guide plate 24 and discharged. can do.

  As shown in FIG. 8, a part of the upper portion of the outer wall 22 bulges upward in the dust removal treatment chamber 18 to form a bulge space S enough to allow a predetermined amount of processed material to enter. To do. And several cutting blades 26 are provided in this bulging space S, and it is comprised so that a slag and the lump etc. which became the lump shape may be cut and separated. Thereby, the cutting blade 26 can be made to act on a dust removal processed material, and it can cut | disconnect reliably.

  As shown in FIGS. 4 to 7, two round bar-shaped guide rods 28 are disposed at the rear end portion of the dust receiving net 27, changing the phase in the circumferential direction of the dust receiving net 27, and In the rear view, the gaps K between the first discharge guide plate 29 and the second discharge guide plate 24 are arranged at a predetermined interval.

  The two guide rods 28 are disposed obliquely with respect to the axial center of the dust removal processing cylinder 17 so as to be directed in the rotation direction of the dust collection processing cylinder 17. That is, the two guide rods 28 are inclined so as to be rearwardly lowered and biased toward the right side (the already cut ground side) toward the rear side. The inner edge of the first discharge guide plate 29 is provided along the guide rod 28. Of the two guide rods 28, the free end portion of the guide rod 28 positioned on the lower side is disposed above the third inclined surface 24b.

  As a result, the dust discharged from the first dust outlet 21 is sorted out by the interval between the two guide rods 28, and the fine dust containing the grains is separated from the swing sorting shelf 40. It is allowed to flow down on the stroller 46, restricts the leakage of large dusts such as sawdust, and takes over the right second discharge guide plate 24 to guide it down to the field scene.

Further, as shown in FIG. 7, the lower end portion of the second discharge guide plate 24 on the second dust outlet 23 side and the side seal 32 of the swing sorting shelf 40 are set at substantially the same height. As a result, intrusion of sawdust into the sorting chamber can be prevented, and the third inclined surface of the second discharge guide plate 24 is maintained while maintaining the sealing performance between the side surface of the swing sorting shelf 40 and the wall surface of the threshing device 4. The operation of the threshing apparatus for cutting and threshing configured as described above will be described.

  First, the grain culm is harvested by the harvesting device 3 at the front part of the machine body, conveyed rearward and upward, inherited by the feed chain 11, and supplied to the threshing device 4. As for this cereal, while the stock is held by the feed chain 11 and conveyed, the tip portion is supplied into the handling chamber 8 and is subjected to the threshing action by the rotating handling cylinder 7. The threshing processed material processed in this way is carried around by the rotating handling cylinder 7 and is further subjected to a threshing processing action, leaking from the mesh of the receiving net 9 onto the swing sorting shelf 40, Subject to rocking selection.

  At this time, the processed product that has been threshed on the front end side of the handling chamber 8 falls on the transfer shelf 44 and is oscillated and transferred rearward, so that a plurality of sheave plates constituting the chaff sheave 45 are formed. Processed material that does not leak from the sorting interval between them reaches the chaff sheave 45. In addition, the dust disposal product that has reached the rear end of the handling chamber 8 is sent into the dust disposal chamber 18 via the communication port R and the one that falls on the lower chaff sheave 45 from the dust ejection port 12. It is divided into those to be processed by the dust removal processing cylinder 17. The dust-removed processed material that has fallen on the chaff sheave 45 is subjected to a wind-selective action while leaking the separation interval of the chaff sheave 45.

  What leaks from the chaff sheave 45 falls onto the grain sieve 47 and is subjected to a wind-selective action while being screened and sorted by the grain sieve 47. At this time, the tangled rice 41 blows up the raised sorting wind into the sorting chamber, and the sorted wind is sucked out of the threshing device 4 by the dust exhaust fan 30.

  In this way, the processed material is sorted while receiving the cooperative action of the oscillating sorting action and the wind sorting action by the sorting wind, and sorted into the first (fine grain), the second, and the dust. The first product is sieved and sorted by the grain 47, and then dropped and collected in the receptacle of the first transfer spiral 42, and is cerealed by the first cerealing device 42a and stored in the grain storage device G. It is thrown into. The second product is cerealed from the second transfer spiral 43 by the second cerealing device 43a, and is reduced into the second processing chamber 15 and reprocessed. Fine dust is sucked by the dust fan 30 and discharged to the outside of the threshing device 4, and large dust that does not leak from the straw rack 46 is threshed from the rear end of the swing sorting shelf 40. It is discharged to the outside of the device 4.

  On the other hand, the dust disposal product taken into the dust disposal chamber 18 from the rear end of the handling chamber 8 through the communication port R is processed by the spiral processing teeth 16 on the outer periphery of the dust disposal cylinder 17 while being transferred rearward. Then, it leaks from the filtration hole of the dust collection screen 27 and is reduced onto the chaff sheave 45. Further, in the dust removal processing chamber 18, the spiral processing teeth 16 and the cutting blade 26 are carried around the dust removal processing chamber 18 and processed while being sent backward. At the end of the dust collection chamber 18, relatively fine dust is thrown out from the first dust outlet 21 to the rear upper part of the swing sorting shelf 40 by the discharge blade 20 at the end of the dust collection cylinder 17. And this dust waste material flows down on the 1st inclined surface 29a of the 1st discharge | release guide plate 29, and falls to the farm scene of the already-harvested land side.

  At this time, the dust discharged from the first dust outlet 23 is sorted on the two guide rods 28, and the grains are mainly collected by leaking onto the swing sorting shelf 40. In addition, dust and other dust that does not fall from the guide rod 28 is taken over from the guide rod 28 to the second discharge guide plate 24, and the second discharge guide plate 24 has the third inclined surface 24 b or the second discharge surface. 2 Flow down on the inclined surface 24a and fall to the farm scene.

  In addition, lump dust such as large swarf scraped around the dust removal treatment cylinder 17 threshing device 4 from the second dust discharge port 23 provided on the right side of the rear end of the dust removal treatment chamber 18. It is discharged to the rear. And this dust waste material flows down on the 2nd inclined surface 24a and the 3rd inclined surface 24b of the 2nd discharge | release guide plate 24, and falls in the farming scene of the threshing device 4 in the cutting area side and immediately after.

  As a result, the swarf on the swaying sorting shelf 40 is reduced, the swaying sorting on the swaying sorting shelf 40 can be efficiently performed, and the grain loss in the sorted matter is discharged together with the swarf to the outside of the machine. And the accuracy and efficiency of the threshing sorting operation can be improved.

  Further, since the dust discharged from the dust processing chamber 18 is dropped to the farm scene on the right side or on the already-cut ground side, it is difficult for the dust waste to be applied to the cereal side of the uncut area, and the adjacent culm row is harvested. It is possible to suppress the resupply of discharged swarf to the threshing device 4 at the time of operation, to reduce the increase in the threshing load and the occurrence of poor sorting, and to improve the efficiency of the harvesting and threshing work by the combine. In addition, since dust collected from the dust disposal chamber 18 is accumulated in a state of being diffused over the field on the already-cut area from the right side, the amount of sawdust can be made uniform in the next cultivation work, It is possible to facilitate the growth of transplanted seedlings.

In addition, the grains mixed in the dust discharged from the rear end of the dust processing chamber 18 can be collected by flowing down onto the swing sorting shelf 40, and the harvest loss can be further reduced. .
Further, as shown in FIGS. 4 and 6, a third discharge guide plate 61 inclined downward is attached to the rear end portion of the swing sorting shelf 40. The third discharge guide plate 61 has substantially the same lateral width as the entire width of the swing sorting shelf 40, swings integrally with the swing sorting shelf 40, and is discharged from the rear end of the swing sorting shelf 40. This guides the discharged dust flowing down to the farm scene.

  On the inclined surface of the third discharge guide plate 61, a flow guide plate 62 is installed upright. The flow-down guide plate 62 is disposed obliquely with respect to the axial direction of the handling cylinder 7 so that the rear part is biased to the right side in rear view.

  Further, as shown in FIGS. 6 and 7, a dust exhaust guide plate 63 is provided on the lower side of the dust exhaust fan outlet of the dust exhaust fan 30 so as to be inclined downwardly. On the inclined surface, the wind direction guide plate 64 is disposed obliquely with respect to the direction of dust exhaust air blowing so as to be biased to the right side in the rear view. A flow guide plate 62 is disposed below the rear side of the wind direction guide plate 64, and the flow guide plate 62 is disposed on an extension line of the wind direction guide plate 64. As a result, the dust exhaust guided by the wind direction guide plate 64 strikes the flow down guide plate 62, the dust discharged from the rear end of the swing sorting shelf 40, and the first discharge guide plate from the first dust outlet 21. The field on the already-cut ground while the dust discharged through the first inclined surface 29 a of 29 and the dust discharged by the dust fan 30 are merged on the third discharge guide plate 61. It can be diffused to the surface and discharged.

  Further, the flow guide plate 62 is disposed on the side closer to the handling cylinder 7 with respect to the first discharge guide plate 29 (left side in the rear view). As a result, the dust discharged from the first dust outlet 21 through the first inclined surface 29a of the first discharge guide plate 29 is guided to the cut area by the flow guide plate 62, and diffused to the field scene. Can be discharged.

  A wind direction plate 65 is provided at the front end portion of the stroller rack 46 of the swing sorting shelf 40 to guide the sorting wind from the tang 41 toward the suction port side of the dust exhaust fan 30. The lower end of the suction port of the dust exhaust fan 30 is positioned on the extended line of the wind direction plate 65. This assists in blowing up the sorting wind, promotes the dispersion and leakage of the processed material on the chaff sheave 45, and reduces the harvest loss in which the grains are discharged together with the sawdust. Further, in this case, if the second tang 66 is provided between the first transfer spiral 42 and the second transfer spiral 43, the sorting air volume below the Strollac 46 can be properly maintained, and the sorting on the Strollack 46 is performed. Efficiency can be increased.

Next, a threshing apparatus according to a first alternative embodiment will be described. In the first alternative embodiment, only the structure of the sorting chamber is modified with respect to the structure of the above-described threshing apparatus.
That is, as shown in FIG. 10, the first step portion 67 is formed by arranging the front end portion of the chaff sheave 45 lower than the rear end portion of the transfer shelf 44 by a predetermined height. A bar-shaped sieve wire 68 is provided toward the rear. The chaff sheave 45 is divided into a first sheave group and a second sheave group having different heights, and the second sheave group is arranged lower than the first sheave group by a predetermined height to form a second stepped portion 69. To do.

  Then, the sorting air outlet of the Kara 41 is divided into three parts: an upper outlet 41a, an intermediate outlet 41b, and a lower outlet 41c. Then, the upper air outlet 41 a is arranged toward the air inlet opened at the lower end of the wind tunnel 70 toward the first stepped portion 67 of the swing sorting shelf 40. This wind tunnel 70 is provided integrally with the swing sorting shelf 40, and has a lower cross-sectional area than the blow-out port side where the blow-in port side at the lower end opens to the rear side of the upper end portion. Even if the swing sorting shelf 40 swings back and forth and up and down, the upper air outlet 41a and the air inlet at the lower end of the wind tunnel 70 are kept in communication.

  Further, the middle stage outlet 41 b is provided in a rearwardly inclined posture so that the sorting air blown from the middle stage outlet 41 b is directed to the second step portion 69. The lower air outlet 41c is arranged so that the sorting air blown out from the lower air outlet 41c is directed between the first flow plate 71 in the upwardly rising and inclined posture arranged between the first transfer spiral 42 and the second transfer spiral 43. Set up in a sloping posture after loose.

  With this configuration, in the first stepped portion 67 and the second stepped portion 69, the sorting wind acts when the processed material falls from these stepped portions, and the sorting efficiency of the sawdust is increased. Thereby, the leakage rate of the grain from the rocking sorting shelf 40 is improved, and as a result, the harvest loss in which the grain is discharged together with the sawdust can be reduced.

  Furthermore, the threshing apparatus of the second alternative embodiment will be described. In the second alternative embodiment, only the arrangement of the second hot pot 66 and the structure of the sorting air passage of the hot pot 41 are modified with respect to the structure of the threshing apparatus of the first different embodiment described above.

  That is, as shown in FIG. 11, the second tang 66 is disposed on the front side of the tang 41 and the lower portion of the casing 77 of the second tang 66 is opened. Further, the upper part of the casing 77 is opened to form a sorting air outlet 79. Then, the sorting air outlet 79 is inserted into and communicated with the inside of the air inlet 81 at the lower end of the wind tunnel 80 fixed to the swinging sorting shelf 40 side. The inserted portion may be covered with an elastic plate such as a rubber plate to prevent leakage of the sorting wind. The wind tunnel 80 extends rearward along the lower surface of the transfer shelf 44, and the rear end outlet 82 faces the first stepped portion 67. The outlet 82 is disposed slightly in front of the rear end of the transfer shelf 44 to prevent the grains from flowing back into the outlet 82.

  Also with this configuration, the sorting wind acts on the first stepped portion 67 and the second stepped portion 69 when the processed material falls from these stepped portions, and the sorting efficiency of the sawdust is increased. Thereby, the leakage rate of the grain from the rocking sorting shelf 40 is improved, and as a result, the harvest loss in which the grain is discharged together with the sawdust can be reduced.

  Further, a plate body 83 in a rearwardly inclined posture is provided below the Chinese tang 41 and the second Chinese tang 66. The rear end of the plate 83 is continued to the lower casing 84 of the tang 41. A first gap portion 85 is formed between the lower end portion of the casing 41 d of the red pepper 41 and the upper surface of the plate body 83. A second gap 86 is formed between the opening at the bottom of the second tang 66 and the upper surface of the plate 83. With this configuration, the grain that leaks between both sides of the front part of the swing sorting shelf 40 and the side wall of the threshing device 4 or from the front side of the swing sorting shelf 40 is slid on the upper surface of the plate 83, and the second gap It can be passed through the portion 86 and the first gap portion 85 to be guided to the lower casing 84 of the Kara 41 and transferred to the rearmost transfer spiral 42 by the sorting air of the Kara 41 to be recovered.

Combine left side view Combine right side view Top view of the combine Side view showing broken threshing device Plan view showing the threshing device in a broken state Rear view of combine showing broken threshing device Rear view around the dust outlet Side view for explanation of processing cylinder and dust disposal chamber Side view for explaining the dust treatment chamber Side view for explanation of threshing apparatus of first different embodiment Side view for explanation of threshing apparatus according to second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Traveling device 3 Harvesting device 4 Threshing device 7 Handling cylinder 8 Handling chamber 11 Feed chain 17 Dust removal processing cylinder 18 Dust processing chamber 21 First dust outlet 23 Second dust outlet 24 Second discharge guide plate 24a First 2 inclined surface 24b 3rd inclined surface 28 guide rod 29 1st discharge guide plate 29a 1st inclined surface 30 dust exhaust fan 40 swing selection shelf 41 Karatsu 42 first transfer spiral 43 second transfer spiral G grain storage device R communication mouth

Claims (2)

  A reaping device (3) is provided on the front side of the vehicle body (1) provided with the traveling device (2), a threshing device (4) is provided on the upper side of the vehicle body (1), and a grain is stored on the right side of the threshing device (4). A device (G) is provided, a handling chamber (8) provided with a handling cylinder (7) is provided at the top of the threshing device (4), and a feed chain (11) is provided on the left side of the handling chamber (8). A dust removal treatment chamber (18) is provided on the right side of the chamber (8), and the dust removal treatment cylinder (17) rotates counterclockwise in the dust removal treatment chamber (18) as viewed from the rear of the threshing device (4). And the rear end of the handling chamber (8) and the front end of the dust disposal chamber (18) are communicated with each other through a communication port (R), and the handling chamber (8) and the dust disposal chamber (18) are connected to each other. A swing sorting shelf (40) is provided below, a Kara (41) is provided below the front of the swing sorting shelf (40), and a No. 1 transfer spiral (42) is provided on the rear side of the Kara (41). , The first transfer screw (42) A second transfer spiral (43) is provided on the rear side, a dust exhaust fan (30) is provided above the rear part of the swing sorting shelf (40), and the left side of the rear end of the dust processing chamber (18). Is provided with a first dust outlet (21) for discharging the dust to the rear upper part of the swing sorting shelf (40), and the first dust outlet (21) is discharged from the first dust outlet (21). Provided with a first discharge guide plate (29) having a first inclined surface (29a) for guiding the discharged waste material to flow backward to the right and dropping it to the farm scene, and the rear end of the dust disposal chamber (18) A second dust discharge port (23) that discharges dust to the rear of the threshing device (4) is provided on the right side, and the second dust discharge port (23) is discharged from the second dust discharge port (23). The second inclined surface (24a) that guides the discharged dust flowing down to the right rear and dropping it onto the farm scene, and the dust discharged from the second dust discharge port (23) immediately after the threshing device (4) Flow Combine, characterized in that the second discharge guide plate and a third inclined surface for dropping into the field plane to guide (24b) and (24) provided.   In the rear view of the threshing device (4), a gap (K) is formed between the first discharge guide plate (29) and the second discharge guide plate (24), and the gap (K) The dust discharged from the first dust outlet (23) flows down onto the swing sorting shelf (40) and the second discharge guide plate without flowing down onto the swing sorting shelf (40). (24) The combine according to claim 1, characterized in that a plurality of guide rods (28) that separates into dust particles that are handed over are arranged.

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