JP2020043778A - Thresher - Google Patents

Abstract

To suppress decline of the airflow of separation air supplied to a rocking separation mechanism.SOLUTION: A thresher includes a rocking separation mechanism 13 for sieving and selecting a selection object, while sending it, and a ventilation part A provided on the lower front of the rocking separation mechanism 13, for supplying selection air to the rocking separation mechanism 13. Between an upper part of a cover 15b for covering a blower fan 15a of the ventilation part A and a lower end on the front of the rocking separation mechanism 13, a windbreak part B is provided, for suppressing forward flow of selection air supplied from the ventilation part A after passing through between the cover 15b and the rocking separation mechanism 13.SELECTED DRAWING: Figure 3

Description

  The present invention is a threshing apparatus comprising: a swing sorting mechanism for sieving and sorting while transferring a sorting object; and a blower unit provided below and in front of the swing sorting mechanism and supplying a sorting wind to the swing sorting mechanism. About.

  For example, Patent Document 1 describes a conventional threshing apparatus. The threshing apparatus described in Patent Literature 1 is provided with an oscillating selection mechanism for sieving and sorting while transferring an object to be sorted, and Karamin for supplying sifting air to a coarse sorting area of the oscillating selection mechanism. The swing sorting mechanism is provided with a grain pan for rough sorting, a chaff sieve, a guide plate for guiding a sorting object, and a fluid separation device for separating a sorting wind from Karamin vertically.

JP-A-2006-67225A

  In the threshing device described in Patent Literature 1, a part of the sorting wind from Karamin hits the glen pan, the chaff sheave, the guide plate, the fluid distribution and the like of the swing sorting mechanism, changes its direction, and flows forward of the swing sorting mechanism. There was a case. Then, since a part of the sorting wind from Karino will not be used for sorting the sorting objects, the amount of sorting wind supplied to the swing sorting mechanism will decrease, and the sorting ability of the sorting objects will decrease. Would.

  An object of the present invention is to suppress a decrease in the air volume of a sorting wind supplied to a swing sorting mechanism.

  The threshing apparatus of the present invention is a swing sorting mechanism for sieving and sorting while transferring the sorting object, and a blower unit provided below and in front of the swing sorting mechanism to supply a sorting wind to the swing sorting mechanism, A separation wind supplied from the blower unit is provided between the upper part of the cover that covers the blower fan of the blower unit and the lower end part of the front part of the swing selection mechanism. And a windproof portion for preventing the airflow from flowing forward through the space between the airbag and the airbag is provided.

  According to this characteristic configuration, since the windbreak unit that suppresses the separation wind supplied from the blowing unit from flowing between the cover and the swing selection mechanism and flowing forward is provided, the windbreak unit is supplied to the swing selection mechanism. It is possible to suppress a decrease in the air volume of the sorting wind to be performed, and it is possible to suppress a decrease in the sorting ability of the sorting target object.

  In the present invention, it is preferable that the windproof portion is provided over a Glen pan provided at a front portion of the swing sorting mechanism and an upper portion of the cover.

  According to this configuration, since the windbreak is provided over the Glenpan and the upper part of the cover, it is possible to further effectively prevent the sorted wind from flowing forward. As a result, it is possible to further suppress a decrease in the amount of air supplied to the swing sorting mechanism, and to further suppress a decrease in the ability to sort the objects to be sorted.

  In the present invention, it is preferable that the windbreak unit includes a first member supported by the swing sorting mechanism, and a second member having elasticity, supported by the first member and in contact with the cover. It is.

  According to this configuration, since the second member having elasticity comes into contact with the cover, the second member can easily conform to the shape of the upper portion of the cover, and the sorting wind can be more effectively suppressed from flowing forward. The second member may be in constant contact with the cover, or may be temporarily separated from the cover with the swing of the swing selection mechanism.

  In the present invention, it is preferable that the second member is hung from the first member so as to follow the shape of the cover.

  According to this configuration, since the second member follows the shape of the cover, a gap is less likely to be formed between the second member and the cover, and the flow of the sorting wind to the front is more effectively suppressed. Can be.

  In the present invention, it is preferable that the first member is made of metal.

  According to this configuration, the first member made of metal is supported by the swing sorting mechanism, so that the windbreak can be firmly attached to the swing sorting mechanism, and the sorting wind is more effectively prevented from flowing forward. Can be suppressed.

  In the present invention, it is preferable that the windproof portion is disposed so as to have an inclined posture that is located lower as it goes forward.

  Sorting air from a blower provided below the front of the swing sorting mechanism is supplied rearward and upward. According to this configuration, since the windbreak section has a posture along the direction of the sorting wind from the blowing section, it is possible to suppress the disturbance of the sorting wind and to more effectively suppress the sorting wind from flowing forward. .

  In the present invention, the blower section has a main Karino and a sub Karamin provided in front of and above the main Karamin, and the windbreaker has an upper part of a cover that covers the blower fan of the sub Karamin, It is preferable that the swing sorting mechanism is provided between the front lower end and the swing sorting mechanism.

  The sorting wind from the sub-kara-min provided above and above the main ka-min is supplied to the rough sorting area of the swing sorting mechanism. Since the sorting state in the rough sorting region has a large influence on the overall sorting ability since it is in the early stage of sorting, it is preferable that the amount of the sorting wind supplied to the rough sorting region is large. According to this configuration, it is possible to suppress a decrease in the flow rate of the sorting wind supplied to the swing sorting mechanism from the sub-karamin, so that it is possible to effectively suppress a decrease in the sorting ability of the sorting target object.

It is a top view of a combine. It is a left view which shows the inside of a threshing apparatus typically. It is a left view which shows the periphery of the part of the sorting part in the conveyance direction upstream. It is a perspective view which shows the periphery of the downstream part of the conveyance direction of a sheave case. It is a rear view showing a sheave case. It is a right view which shows a swing sorting mechanism. It is a rear view showing a chaff box. It is a perspective view showing a chaff box.

  Hereinafter, a case where an embodiment of a threshing apparatus according to the present invention is applied to a self-removing combine will be described with reference to the drawings.

  In this embodiment, when defining the longitudinal direction of the traveling body of the combine, it is defined along the body traveling direction in the working state, and when defining the lateral direction of the body, the lateral direction is defined as viewed from the body traveling direction. Is defined. 1 and the like, the direction indicated by the symbol (F) is the front side of the aircraft, the direction indicated by the symbol (B) is the rear side of the aircraft, the direction indicated by the symbol (L) is the left side of the aircraft, and the direction indicated by the symbol (R) is the right side of the aircraft. It is.

  As shown in FIG. 1, a driving unit 100 on which a driver rides is provided in a right front portion of the combine body. A threshing device 130 that performs threshing processing of the harvest target that has been cut by the reaper 120 in front of the operating unit 100 is provided behind the operating unit 100 and on the left side of the fuselage. In addition, a grain tank 150 for storing the grains threshed by the threshing apparatus 130 is provided behind the operating unit 100 and on the right side of the machine body, and a straw processing apparatus 170 for discharging the straw after threshing to the outside of the combine. Is connected to the lower part of the rear part of the threshing device 130.

[Threshing device]
As shown in FIG. 2, the threshing device 130 handles the ears of the harvested stalks that are pinched and conveyed to the threshing unit 1 for threshing. There are provided a sorting unit 2 for dynamic sorting, a collecting unit 3 for collecting grains and the like obtained in the sorting process, and the like.

  The threshing device 130 also includes an upper case 4 that covers the handling room C1 of the threshing unit 1, a lower case 5 that is provided below the upper case 4 and that covers the sorting unit C2 of the sorting unit 2 and the collecting unit 3, Is provided.

  As shown in FIG. 2, the threshing unit 1 includes a feed chain 6 including a projectionless stepless rotating chain for holding and transporting the harvested grain culm transported from the harvesting unit 120 backward. A mechanism 7 is provided with a drum-type handling drum 8 that performs a threshing process by handling the front end side of the harvested grain culm that is rotated around the rotation axis Y along the front-rear direction and nipped and transported by the nipping and transporting mechanism 7. I have. In addition, the threshing unit 1 is provided with a receiving net 9 for receiving and dropping the threshing processed by the handling cylinder 8.

  The thresh-processed material separated from the harvested culm by the handling cylinder 8 is supplied to the sorting unit 2 by leaking through the receiving net 9 or by directly falling from the rear end of the handling cylinder 8. On the other hand, the straw (culm debris) of the harvested grain culm after the threshing process is separated by the handling cylinder 8 is received from the pinching transport mechanism 7 to the straw transporting section 10 that transports the straw after threshing. Passed. The straw transport section 10 is provided with a straw chain 11 composed of a stepless rotating chain for pinching and transporting the straw backward. The straw is discharged to the outside of the machine by the straw chain 11.

[Sorting Department]
As shown in FIG. 2, the sorting unit 2 includes an oscillating sorting mechanism 13 that sieves and sorts the threshing processed material (corresponding to “sorting target”) supplied from the threshing unit 1 backward. A blower unit A and the like are provided below and in front of the swing sorting mechanism 13 and supply a sorting wind to the swing sorting mechanism 13. The blower unit A has a main Karamin 14 and a sub Karamin 15 provided in front of and above the main Karamin 14. The main sorting machine 14 supplies a sorting wind to a lower sorting area in the swing sorting mechanism 13. The coarse sorting sub-karamino 15 supplies the sorting wind to the upper rough sorting area in the swing sorting mechanism 13.

  As shown in FIG. 2, the swing sorting mechanism 13 includes a frame-shaped sheave case 17 formed in a rectangular shape in a top view, a first grain pan 18 for coarse sorting (corresponding to “Glen pan”), a plurality of pieces. A first sieve wire 19, a second grain pan 20 for rough sorting, a plurality of second sieve wires 21, a chaff sheave 22 for rough sorting, a straw rack 23 for rough sorting, a guide plate 24 having a rearwardly inclined position, and Glen sieve 25 for fine selection is provided. An eccentric cam type driving unit 26 that swings and drives the sheave case 17 by power from an engine (not shown) is provided at a rear portion of the sheave case 17.

  As shown in FIG. 2, the first Glen pan 18 is arranged on the front side of the rough sorting area in the sheave case 17. The first Glen pan 18 transfers the thresh-processed material that has leaked from the front side of the receiving net 9 to the rear while sorting by specific gravity.

  As shown in FIG. 2, the plurality of first sieve lines 19 extend rearward and upward from the rear end of the first Glen pan 18 at a predetermined interval in the left-right direction. The plurality of first sieve lines 19 are supplied to the front end of the lower chaff sheave 22 while releasing the threshing from the first grain pan 18.

  As shown in FIG. 2, the second Glen pan 20 is arranged at a position below the dust outlet 27 on the rear side of the rough sorting area in the sheave case 17. The second Glen pan 20 transfers the thresh-processed material from the dust outlet 27 while rearranging the specific gravity difference.

  As shown in FIG. 2, the plurality of second sieve lines 21 extend from the transfer end portion of the second Glen pan 20 toward the downstream side in the transport direction at a predetermined interval in the left-right direction. The plurality of second sieve lines 21 are supplied to the rear end of the lower chaff sheave 22 and the straw rack 23 while releasing the threshing from the second grain pan 20.

  As shown in FIG. 2, the chaff sheave 22 is disposed below the first Glen pan 18 (downstream in the transport direction) below the first Glen pan 18 in the rough sorting area of the sheave case 17. The chaff sheave 22 sieves and sorts thresh-processed products from the plurality of first sieve lines 19, thresh-processed products leaked from the rear side of the receiving net 9, and thresh-processed products from the plurality of second sieve lines 21. Transfer backward.

  As shown in FIG. 2, the chaff sheave 22 is configured to be capable of adjusting the opening. The chaff sheave 22 is provided with a plurality of chaff flip plates 28 which are arranged at predetermined intervals in the front-rear direction so as to be swingable in the front-rear direction (conveying direction) and are integrally swung to change the posture. ing. Above the chaff sheave 22, a processing amount sensor 29 for detecting the layer thickness of the processing object deposited on the chaff sheave 22 as a sorting processing amount is provided. That is, the processing amount sensor 29 is provided above the sorting unit 2 and can detect the sorting processing amount in the sorting unit 2.

  As shown in FIG. 2, the straw rack 23 is disposed at the rear side of the chaff sheave 22 in the rough sorting area of the sheave case 17 so as to be connected to the chaff sheave 22. The straw rack 23 transfers the thresh-processed products from the plurality of second sieve lines 21 and the thresh-processed products from the chaff sieve 22 to the rear while sieving and sorting, and removes the long shredded cereal culm, etc. (Straw) is discharged out of the machine from a discharge port provided behind the swinging sorting mechanism 13.

  As shown in FIG. 2, at a position immediately before the chaff sheave 22 in the transport direction below the first Glen pan 18, the sorting wind from the sub Karamin 15 is passed through the air passage between the first Glen pan 18 and the chaff sheave 22. Separating fluids 16 that divide up and down are arranged in one sorting wind and a second sorting wind flowing in an air passage between the chaff sheave 22 and the guide plate 24.

  As shown in FIG. 2, the front part of the fluid separation 16 is inclined forward and downward such that the start end side portion of the fluid separation 16 is located lower toward the branch start end. Thereby, it is configured such that the wind is directed to the air outlet of the sub-karamino 15. The rear part of the dividing fluid 16 is inclined backward and downward so that the terminal end portion of the dividing fluid 16 is located lower toward the dividing end. Accordingly, the wind of the sub-kara 15 is configured to flow from the terminal end portion to the upper portion of the chaflip plate 28 on the most upstream side in the transport direction.

  As shown in FIG. 2, the guide plate 24 is disposed in the sheave case 17 on the front side of the selective sorting area. The guide plate 24 guides the threshing material leaked from the front side of the chaff sheave 22 down to the rear side.

  As shown in FIG. 2, the Glen Sheave 25 is arranged on the sheave case 17 at the rear side of the selection area. The grain sieve 25 transfers the threshing product leaked from the rear side of the chaff sheave 22 and the threshing product guided down by the guide plate 24 to the rear while sieving and sorting.

  As shown in FIG. 2, the spreading cylinder 30 is rotated by the power from the engine to break the threshing products supplied to the plurality of second sieve lines 21, and to disperse single grains contained in the threshing products. It promotes the flow of the grain.

  As shown in FIG. 2, the dust exhaust fan 31 rotates by power from the engine, sucks culm debris and the like conveyed by wind from the main Karin 14 and the auxiliary Karin 15 to the rear and upward by the sorting wind from the outside, and To be discharged.

  As shown in FIG. 2, the main Karamin 14 is arranged below the guide plate 24 of the swing sorting mechanism 13. That is, the main Karamin 14 is provided in front of and below the swing sorting mechanism 13. As shown in FIG. 3, the main kara 14 includes a blower fan 14a and a cover 14b that covers the blower fan 14a. The main Karino 14 supplies the sorting wind from the lower side on the upstream side in the transport direction to the threshing processed material and the like which is finely sorted by the Glen Sheave 25 by the rotation of the blower fan 14 a by the power from the engine. And wind sorting. As a result, culm debris and the like having a low specific gravity contained in the thresh-processed material carefully sorted by the Glen Sheave 25 are transported by wind toward the discharge port.

  In the case where the amount of sorting processing is large, the operation of the electric transmission mechanism that changes the rotational drive speed of the main Karamin 14 is controlled by the control operation of the control device based on the detection of the processing amount sensor 29. The selection air volume is increased, and the selection air volume is reduced when the selection processing amount is small.

  As shown in FIG. 2, the sub Karamin 15 is arranged below the first Glenpan 18 and in front of and above the main Karamin 14. That is, the sub-kara 15 is provided in front of and below the swing sorting mechanism 13. The upper end position of the sub Karamin 15 and the upper end position of the main Karamin 14 substantially coincide in the height direction. The rear end position of the sub Karamin 15 and the front end position of the main Karamin 14 are close to each other in the front-back direction. As shown in FIG. 3, the sub-kara 15 includes a blower fan 15a and covers 15b and 15c that cover the blower fan 15a. The sub-karamino 15 rotates at a constant speed with the power from the engine, so that threshing proceeds from the rear side of the receiving net 9 and the plurality of first sieve wires 19 and the like to the chaff sheave 22 and leaks from the chaff sheave 22. A sorting wind is supplied to a threshing product from the lower side on the upstream side in the transport direction to perform wind sorting. As a result, culm debris and the like having a low specific gravity contained in the thresh-processed material roughly sorted by the chaff sheave 22 or the like are transported by wind toward the discharge port.

  With the above-described configuration, in the sorting unit 2, the thresh-processed product from the threshing unit 1 is divided into the first product (single-grained kernels) flowing down from the Glen Sheave 25 and the second product (the single grain) supplied behind the Glen Sheave 25. It can be accurately separated into a branch attached to a branch or a bifurcated grain) and a third product (shredded grain culm or culm debris) discharged outside the machine from an outlet.

  As shown in FIG. 2, the collection unit 3 includes a first collection unit 34 that collects the first thing flowing down from the Glen Sheave 25 of the sorting unit 2 and a second product that flows down from behind the Glen Sheave 25 of the sorting unit 2. And a second collection unit 35 that collects the. The second collection unit 35 is located further downstream than the collection unit 34 in the transport direction.

  As shown in FIG. 2, a first screw 36 that conveys the first object collected by the first collection unit 34 to the right by rotating with the power from the engine is provided at the bottom of the first collection unit 34. Are located. At the bottom of the second recovery section 35, a second screw 37 that rotates to the right with the second product recovered by the second recovery section 35 by being rotated by the power from the engine is disposed.

  At the right end of the first screw 36, in conjunction with the first screw 36, a first lifting conveyor (not shown) that lifts the first thing transported by the first screw 36 and supplies it to the grain tank 150. ) Are connected. At the right end of the second screw 37, a second processing cylinder (not shown) for performing shredding processing on a second product conveyed by the second screw 37 in conjunction with the second screw 37, and a second processing cylinder And a second reduction device (not shown) that reduces the second product after the shredding process to the sorting unit 2.

(Windbreak)
With reference to FIG. 2 and FIG. The windbreak section B is provided between an upper part of a cover 15 b that covers the blower fan 15 a of the sub-kara 15 and a lower end part of the front part of the swing sorting mechanism 13. In detail, the windbreak part B is provided over the first Glen pan 18 provided at the front part of the swing sorting mechanism 13 and the upper part of the cover 15b.

  The windbreak section B includes a metal plate 61 (corresponding to a “first member”) supported by the swing sorting mechanism 13 and an elastic plate 62 (a “second member”) supported by the metal plate 61 and in contact with the cover 15b. Equivalent). The metal plate 61 is a rectangular flat plate made of metal, and has an upper end joined to the lower surface of the first Glen pan 18. The elastic plate 62 is a rectangular flat plate made of resin having elasticity. The upper end is joined to the upper end of the elastic plate 62, and the lower end is in contact with the upper part of the cover 15 b of the sub-car 15. More specifically, a bolt welded to the lower end of the metal plate 61 is inserted into a through hole at the upper end of the elastic plate 62, and a nut is fastened to the bolt to attach the elastic plate 62 to the metal plate 61. ing.

  As shown in FIG. 3, the metal plate 61 is attached to the lower surface of the first Glen pan 18 with its normal line obliquely upward and forward. That is, the metal plate 61 is arranged so as to be inclined toward the front side. The elastic plate 62 has an upper portion in a posture parallel to the metal plate 61, a lower portion curved forward, and a lower end portion in a posture parallel to the upper surface of the cover 15b. That is, the elastic plate 62 is hung down from the metal plate 61 so as to follow the shape of the cover 15b, and is arranged so as to have an inclined posture that is located lower toward the front side. Therefore, the windproof part B is arranged so as to have an inclined posture that is positioned lower as it approaches the front side as a whole.

  The metal plate 61 and the elastic plate 62 extend to the left and right ends inside the frame-shaped sheave case 17. That is, the widths of the metal plate 61 and the elastic plate 62 in the left-right direction of the first Glen pan 18, the chaff sheave 22, the guide plate 24, and the like are substantially the same.

  When the swing selection mechanism 13 swings, the first Glen pan 18 and the metal plate 61 move up and down. Along with this, the upper part of the elastic plate 62 also moves up and down. In the present embodiment, the elastic plate 62 is configured so as not to be separated from the cover 15b even when the swing sorting mechanism 13 is located at the uppermost position. Therefore, the elastic plate 62 is always in contact with the cover 15b.

  With the above configuration, the space between the lower surface of the first Glen pan 18 and the cover 15b inside the frame-shaped sheave case 17 is closed by the windproof portion B. As a result, an air passage cannot be formed between the lower surface of the first Glen pan 18 and the cover 15b, and the sorting wind from the sub Karin 15 flows forward between the lower surface of the first Glen pan 18 and the cover 15b. Is suppressed. That is, the windbreak unit B suppresses the sorting wind supplied from the sub-kara-mino 15 from flowing between the cover 15b and the swing sorting mechanism 13 and flowing forward. In addition, even when the windbreak part B does not completely block the space between the lower surface of the first Glen pan 18 and the cover 15b, the sorted wind oscillates with the cover 15b as compared with the case where the windbreak part B does not exist. Flowing forward through the separation mechanism 13 is suppressed.

[Side cover]
As shown in FIGS. 2, 3, 4, and 5, a side cover 71 is provided outside the sheave case 17 in the left-right direction. The side cover 71 is an elastically deformable resin plate member, extends in the front-rear direction, and is provided from the front end to the rear end of the sheave case 17. The side cover 71 is attached to the right side wall 17a and the left side wall 17b of the sheave case 17.

  As shown in FIG. 4, the right side cover 71 is attached to the upper end of the right side wall 17 a of the sheave case 17 by a bolt and a nut via a stay 72. Similarly, the left side cover 71 is attached to the left side wall 17 b of the sheave case 17. The side cover 71 protrudes outward in the left-right direction from the right side wall 17a and the left side wall 17b, and is in contact with the side wall of the lower case 5 of the sorting unit 2.

  4 and 5, the rear end of the right side cover 71 is bent leftward near the rear end of the sheave case 17, and projects upward from the rear wall 17c of the sheave case 17. It is attached to the stay 17d. Similarly, the rear end of the left side cover 71 is bent rightward near the rear end of the sheave case 17 and attached to a stay 17d projecting upward from the rear wall 17c of the sheave case 17. That is, as shown in FIG. 5, the rear ends of the left and right side covers 71 are bent inward in the left-right direction.

  With the above configuration, the thresh-processed material is prevented from leaking backward from the rear end of the sheave case 17. For example, the threshing product placed on the side cover 71 and rolling backward is guided to the rear end of the side cover 71 bent inward, and falls into the sheave case 17.

(Chaff sheave opening adjustment mechanism)
The chaff sheave 22 shown in FIG. 2, FIG. 3, and FIG. 6 is controlled by an electric motor for adjusting the opening of the chaff sheave 22 by the control operation of the control device based on the detection of the processing amount sensor 29. The opening is configured to increase when the amount of sorting processing is large and to decrease when the amount of sorting processing is small.

  Specifically, as shown in FIGS. 3 and 6, the upper end of the chaff flip plate 28 is supported by the upper holding plate 81, and the lower end of the chaff flip plate 28 is supported by the lower holding plate 82. The upper holding plate 81 is fixed to the right side wall 17 a of the sheave case 17. As the lower holding plate 82 moves, the opening of the chaff sheave 22 changes.

  As shown in FIG. 6, a link plate 83 is provided outside the right side wall 17a of the sheave case 17 so as to be swingable about the shaft member 83a. The lower pin 83b of the link plate 83 is connected to the lower holding plate 82 through the hole 17e of the right side wall 17a. The pin 83c at the rear of the link plate 83 is urged rearward by a spring 84. The pin 83d at the front of the link plate 83 is connected to the operation wire 85. The operation wire 85 extends forward from the link plate 83 and is connected to a drive mechanism 87 of the opening / closing drive device 86. The drive mechanism 87 is driven by a motor 88 controlled by a control device.

  As shown in FIG. 1, the opening and closing drive device 86 is located behind the grain tank 150 and to the right of the rear of the threshing device 130. As shown in FIG. 7, the opening / closing drive device 86 is located between the vertical transport unit 191 of the discharging device 190 and the swinging sorting mechanism 13 of the threshing device 130.

  As shown in FIGS. 7 and 8, the opening / closing drive device 86 includes a stay 132 erected to the right from the rear end of the side plate 131 of the threshing device 130, and a vertical direction on the left side of the vertical transport unit 191. It is supported by an erect frame 133. Specifically, the opening / closing drive device 86 is supported by a stay 134 extending rightward from the stay 132 and a stay 135 extending leftward from the frame 133.

  The resin sheets 136 and 137 are provided behind the opening / closing drive device 86. The resin sheet 136 covers the rear surface of the opening / closing drive device 86. The resin sheets 136 and 137 prevent dust such as straw chips from entering the space in front of the stay 132 and the frame 133 and in which the opening / closing drive device 86 is located.

  The upper end of the resin sheet 136 is detachably attached to the stay 138. The lower end of the resin sheet 136 is attached to a stay 139. The stays 138 and 139 are provided to extend in the left-right direction across the stay 132 and the frame 133. The upper end of the resin sheet 137 is attached to a stay 139. The lower end of the resin sheet 137 is attached to a frame surrounding the outer periphery of a fuel tank (not shown).

  When performing maintenance on the opening / closing drive device 86, the upper end portion of the resin sheet 136 is detached from the stay 138, and the resin sheet 136 is opened rearward, so that the opening / closing drive device 86 can be easily accessed.

  As shown in FIG. 7, the opening / closing drive device 86 is positioned above the swing sorting mechanism 13 in the up-down direction. Therefore, even if dust such as straw chips enters the space where the opening / closing drive device 86 is located, the opening / closing drive device 86 is positioned above the accumulated dust, so that dust entering the opening / closing drive device 86 is suppressed. Is done.

  As shown in FIG. 8, the opening / closing drive device 86 is located forward of the rear surface of the stay 132 and the rear surface of the frame 133 in the front-rear direction. Therefore, the front surfaces of the resin sheets 136 and 137 can be in close contact with the rear surfaces of the stay 132, the frame 133, the stay 138, and the stay 139. Accordingly, it is possible to effectively suppress the entry of dust such as straw chips into the space where the opening / closing drive device 86 is located.

(Tilt position of chaff sheave)
As shown in FIG. 2, the chaff sheave 22 is arranged so as to have an inclined posture (a forward inclined posture) that is located lower as it goes forward. In the present embodiment, the front portion of the chief sheave 22 is disposed below the conventional configuration in which the chief sheave 22 is disposed horizontally, and the inclination angle of the chief sheave 22 with respect to the horizontal is 1 °. The distance between the front part of the chaff sheave 22 and the first sieve wire 19 is about 10 mm larger than when the chaff sheave 22 is arranged horizontally.

  By increasing the distance between the front portion of the chaff sheave 22 and the first sieve line 19 by the forward leaning posture, the sorting wind from the sub-karamino 15 can easily pass between the front portion of the chaff sheave 22 and the first sieve line 19. . In addition, the falling distance of the threshing processed material from the first sieve wire 19 is increased, and the time during which the threshing processed product is exposed to the sorting wind becomes longer. Thereby, the sorting accuracy and the sorting efficiency in the rough sorting region of the sorting unit 2 can be improved.

[Another embodiment]
(1) In the above embodiment, the metal plate 61 and the elastic plate 62 of the windproof part B are provided to extend to the left and right ends inside the frame-shaped sheave case 17. As described above, even when the windbreak portion B does not completely cover the space between the lower surface of the first Glen pan 18 and the cover 15b, compared with the case where the windbreak portion B does not exist, the sorting wind is generated by the cover 15b. Flowing forward through the swing sorting mechanism 13 is suppressed. Therefore, the width (the size in the left-right direction) of the metal plate 61 and the elastic plate 62 may be smaller than the width of the sheave case 17. Further, the metal plate 61 and the elastic plate 62 may be divided into a plurality of parts in the left-right direction. For example, the metal plate 61 and the elastic plate 62 may be a plurality of strip-shaped or rod-shaped members, and a gap may be provided between the plurality of members.

(2) In the above embodiment, the windproof part B is configured by the metal plate 61 and the elastic plate 62, that is, the upper and lower two members. The windproof part B may be composed of a single member, or may be composed of three or more upper and lower members. The windproof part B may be constituted by a single or a plurality of members having elasticity, may be constituted by a single or a plurality of members having rigidity like the metal plate 61, or may be constituted by a member having elasticity. It may be constituted by a combination of members having rigidity.

(3) In the above embodiment, the windproof part B was attached to the lower surface of the first Glen pan 18. The windproof part B may be attached to the sheave case 17. For example, it may be attached to the right side wall 17a and the left side wall 17b of the sheave case 17.

(4) In the above-described embodiment, the blower unit A is configured to have the main Karin 14 and the auxiliary Karin 15. It is also possible to adopt a configuration in which the sub-kara 15 is not provided, and the blower section A has only the main kara 14. In this case, the windbreak part B is provided between the upper part of the cover 14 b of the main kara 14 and the lower end part of the front part of the swing sorting mechanism 13. Further, the blower unit A may be configured to have three or more karino.

(5) In the above embodiment, the example in which the threshing unit 1 includes the drum-type handling cylinder 8 has been described. Instead of the drum-type handling cylinder, a so-called bar-shaped handling cylinder may be provided. This bar-shaped handling cylinder includes a plurality of bar-shaped tooth supporting members arranged in a circumferential direction and a plurality of bar-shaped tooth protruding radially outward from the bar-shaped member, and is provided between the tooth supporting members. It has a cage-like shape in which an internal space communicating with the outside is formed inside.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a harvester that harvests crops to be planted while traveling, and can be applied to a normal combine and the like in addition to a self-removable combine.

13: Swing sorting mechanism 14: Main Kara 14a: Ventilation fan 14b: Cover 15: Sub Karamin 15a: Ventilation fan 15b: Cover 18: First Glenpan (Glenpan)
61: metal plate (first member)
62: elastic plate (second member)
130: Threshing device A: Blower B: Windbreaker

Claims (7)

An oscillating sorting mechanism for sieving and sorting while transferring sorting objects,
A blower unit provided in front of and below the swing sorting mechanism for supplying a sorting wind to the swing sorting mechanism,
Between the upper part of the cover that covers the blower fan of the blower and the lower end of the front part of the swing sorting mechanism, the sorting wind supplied from the blower is between the cover and the swing sorting mechanism. A threshing device provided with a windbreak that suppresses the flow of water through   The threshing apparatus according to claim 1, wherein the windbreak unit is provided over a Glenpan provided at a front part of the swing sorting mechanism and an upper part of the cover.   The said windbreak part is provided with the 1st member supported by the said swing sorting mechanism, and the 2nd member which is supported by the said 1st member and has an elasticity which contacts the said cover, The 1st or 2nd. Threshing equipment.   The threshing apparatus according to claim 3, wherein the second member is hung from the first member so as to follow the shape of the cover.   The threshing apparatus according to claim 3 or 4, wherein the first member is made of metal.   The threshing apparatus according to any one of claims 1 to 5, wherein the windbreak unit is disposed so as to have an inclined posture that is located lower as it goes forward. The blower section has a main Karamin and a sub Karamin provided in front of and above the main Karamin,
The threshing apparatus according to any one of claims 1 to 6, wherein the windbreak unit is provided between an upper portion of a cover that covers the sub-Amino fan and a lower end portion of a front portion of the swing sorting mechanism. .

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