JP2006254815A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of reducing the amount of lost grain discharged to the exterior of a machine as possible while forming an effective flow of selection wind caused by a winnower fan. <P>SOLUTION: The combine harvester has a threshing part 110, a swinging selection structure 150A having a chaff sieve 220 and a straw rack 230, the winnower fan 410, and a sucking fan. An opening 510 through which a sucking side of the sucking fan communicates with a discharging side thereof is formed between the sucking fan and the straw rack. An elastically deformable blocking member 550 is installed around the base end part so as to block at least a part of the opening. Preferably, a wind-directing plate 600 extended in the width direction of the machine body is installed between the chaff sieve and the straw rack in the longitudinal direction of the machine body so as to guide the selection wind from the winnower fan to the sucking fan. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a combine.

The combine includes a harvesting unit that harvests the cereal, a threshing unit that threshs the cereal that has been harvested by the harvesting unit, and a selection unit that selects the grain from the cereal to be threshed by the threshing unit.
The sorting unit includes a swing sorting mechanism for sorting grains and a wind sorting mechanism for sending sorting wind to the swing sorting mechanism.
Specifically, the swing sorting mechanism includes a chaff sheave that sorts grains from the cereals to be removed, and a stroll rack that conveys large unnecessary items such as waste from the unnecessary items selected by the chaff sheave to the rear of the aircraft. have.
The wind sorting mechanism has a tang fan that sends out the sort wind from above to the swing sort mechanism, and a suction fan that sucks the sort wind from the tang fan together with scattered dust and the like. ing.

  By the way, as the suction structure of the suction fan, in addition to the main path, the suction fan is connected to the suction side and the discharge side of the suction fan which are communicated only by the main path. There is a large opening method (refer to Patent Document 1) in which the suction side and the discharge side are also communicated by an opening.

In the closed suction method, since the air passage for discharging the sorting air from the Kara fan to the outside of the machine is only the main passage, turbulent flow is likely to occur, and an efficient flow of the sorting air is formed. There is a problem that is difficult.
On the other hand, the large opening method prevents the occurrence of turbulence due to the presence of the opening and easily forms an efficient flow of the sorting wind, but on the other hand, the grains scattered on the sorting wind are There is a problem that it is easily discharged through the opening and is easily lost. Further, if the suction amount of the suction fan is increased in order to effectively form the flow of the sorting air, the grain is also sucked and discharged out of the machine, resulting in a loss.
JP 2004-97164 A

  The present invention has been made in view of the above prior art, and is a combine that can reduce the loss amount of grains discharged outside the machine as much as possible while forming an effective flow of sorting air by a Kara fan. The purpose is to provide

  In order to achieve the above object, the present invention provides a threshing unit for threshing the harvested culm, a chaff sheave for selecting a grain from the cereal to be threshed by the threshing unit, and a rear portion of the chaff sheave. An oscillating sorting mechanism having a stroller that transports unnecessary objects to the rear of the machine body, a tang fan that sends a sorting wind that passes upward from below to the oscillating sorting mechanism, and a position above the oscillating sorting mechanism. A suction fan for sucking the sorting air from the Kara fan and discharging it outside the apparatus, and between the suction fan and the Strollac, the suction side of the suction fan and the discharge Provided is a combine in which an opening communicating with the side is provided, and a blocking member that is elastically deformable around a base end portion is provided so as to block at least a part of the opening.

  Preferably, the suction fan cover for covering the suction fan, further comprising a suction fan cover having a suction port facing the swing selection mechanism and a discharge port communicated to the outside of the machine, wherein the blocking member is The base end portion may be connected to the suction fan cover in a state in which a gap exists between the free end portion and the Strollac.

  The Strollac may have a recess recessed downward between a front end and a rear end in the longitudinal direction of the machine body. In such an aspect, the blocking member may be disposed such that the free end portion is located at the same position as the recessed portion or behind the recessed portion with respect to the longitudinal direction of the machine body.

  In the various aspects, preferably, a wind direction plate extending in the width direction of the airframe is provided between the chaff sheave and the strollac in the longitudinal direction of the airframe so as to guide the selected air from the tang fan to the suction fan. Can be provided.

Preferably, a lower end portion of the wind direction plate may be positioned below a lower end portion of the chaff sheave so as to be close to a flown slab that defines an air path of the selected wind from the tang fan.
In an aspect including a plurality of the wind direction plates arranged in parallel in the longitudinal direction of the airframe with a gap between each other, the plurality of wind direction plates are separated from the wind direction plate located at the foremost position by the drifted grain plate. It can be configured such that the upper end portion is located upward as it goes to the wind direction plate that guides the most selected wind to be guided.

  Moreover, in the aspect provided with the said several wind direction board arranged in parallel with the longitudinal direction of the body with the clearance gap between each other, this several wind direction board is located back from the wind direction board located in the front side. It can be configured such that the lower end portion is positioned downward as it goes to the wind direction plate.

As described above, according to the present invention, an opening that communicates the suction side and the discharge side of the suction fan is provided between the suction fan and the stroller, and at least a part of the opening is blocked. Since the shielding member that can be elastically deformed is provided around the base end portion, the grains scattered on the sorting wind are discharged out of the machine through the opening while forming an efficient flow of the sorting wind. Can be effectively prevented, and the recovery efficiency of the grain can be improved.
Further, since the blocking member can be elastically deformed, clogging due to a large lump of unnecessary material conveyed by the Strollac can be prevented.

  If the base end portion of the shielding member is connected to the suction fan cover in a state where the free end portion of the shielding member has a gap with the Strollac, a member for attaching the shielding member is separately provided. There is no need to provide it, and the scattered grains can be effectively blocked by the side plate of the threshing machine frame and the blocking member.

  If the Strollac is provided with a recess, and the free end of the blocking member is configured to be located at the same position as the recess or behind the recess in the longitudinal direction of the machine body, the Strollac is conveyed by the Strollac. Unnecessary clogging can be prevented more effectively.

  If a wind direction plate is provided between the chaff sheave and the Strollac in the longitudinal direction of the fuselage to guide the sorting air from the Kara fan to the suction fan, an effective sorting air flow from the Kara fan to the suction fan can be achieved. Can be formed.

  If the lower end portion of the wind direction plate is positioned lower than the lower end portion of the chaff sheave so as to be close to the cereal plate that defines the air path of the sorting wind from the tang fan, the effective area of the wind direction plate And the flow of the sorting wind can be formed more effectively.

  In an aspect in which a plurality of the wind direction plates are provided, the upper end portion is positioned upward as it goes from the wind direction plate located at the foremost position to the wind direction plate that guides the most selected wind guided by the flown cereal plate. By doing so, it is possible to form an effective flow of sorting air from the tang fan to the suction fan while maintaining the transportability of unwanted objects from the chaff sheave to the stroller.

  Further, in the aspect in which a plurality of the wind direction plates are provided, if the lower end portion is positioned downward from the wind direction plate located on the front side to the wind direction plate located on the rear side, the effective area of the wind direction plate is reduced. It can be increased, and an effective sorting air flow from the tang fan to the suction fan can be formed.

Below, the combine which concerns on preferable embodiment of this invention is demonstrated, referring an accompanying drawing.
1 and 2 are a side view and a plan view of a combine 1A according to the present embodiment, respectively.

First, the overall configuration of the combine will be described.
As shown in FIG. 1 and FIG. 2, the combine 1 </ b> A includes a crawler type traveling device 1, a body frame 2 connected to the crawler type traveling device, and a driving unit disposed in front of the right side of the body frame 2. 14, a cutting and raising device 3 connected to the front portion of the machine body frame 2 so as to be movable up and down, conveying devices 8a, 8b and 8c for conveying the culm cut by the cutting and raising device 3, and the conveying A feed chain device 9 that inherits the stock of the culm from the devices 8a, 8b, and 8c and conveys it to the rear, and a threshing device that threshs the culm and sorts the cereal while being conveyed by the feed chain device 9 100, a grain tank 13 for storing the grain selected by the threshing apparatus 100, and a grain discharger for discharging the grain stored in the grain tank 13 to the outside 15, and a straw discharge chain 10 inherit the straw discharge from the feed chain 9, the straw discharge processing device 11 for processing the straw discharge that has been conveyed by the exhaust straw chain device 10.

  The mowing / raising device 3 includes a weed plate 4 provided at a front end, a cause mechanism 5 erected at the rear of the weed plate 4, and a cutting blade disposed at the rear of the cause mechanism 5. 7 so that the cereals sown by the weed board 4 are caused by the tine 6 provided in the raising mechanism 5 and the stock of the erected cereals is reaped by the cutting blade 7 It is configured.

  The conveying devices 8a, 8b, 8c include a lower conveying device 8a, an upper conveying device 8b, and a vertical conveying device 8c, and are configured to inherit the cereal stock from the vertical conveying device 8c to the feed chain device 9. ing.

The feed chain device 9 is configured to convey the culm backward in a state in which the tip of the culm is threshed by the handling barrel 130 in the threshing device 100.
The threshing apparatus 100 will be described later.

The Glen tank 13 is configured to store the first grain that is sorted by the threshing apparatus 100 and concentrated in the first basket 310 described below.
Specifically, the first grain collected in the first bowl 310 is carried into the Glen tank 13 via the first transport conveyor 330 and the cereal conveyor (not shown) described below.
In the present embodiment, the Glen tank 13 is disposed behind the operation unit 14 provided in front of the right side of the fuselage frame 2.

The grain discharging device 15 includes a discharge conveyor (not shown) provided at the bottom of the Glen tank 13, a vertical discharge auger 17 that conveys the grain from the discharge conveyor upward, and a base end portion of the grain discharging apparatus 15 A horizontal discharge auger 18 communicated with the upper end of the vertical discharge auger 17, and the grains in the grain tank 13 are discharged to the outside through a discharge port 19 provided at the tip of the horizontal discharge auger 18. Configured to get.
In the present embodiment, the Glen tank 13 is pivotable laterally around the vertical discharge auger 17, thereby enabling driving equipment and hydraulic equipment disposed inside the fuselage. Maintainability is improved.

  The said waste disposal apparatus 11 can be equipped with a waste cutter and a spreading | diffusion conveyor so that the waste after threshing by the said threshing apparatus 100 may be cut | disconnected or it may be discharged | emitted outside without cut | disconnecting. It is configured.

Here, the threshing apparatus 100 will be described.
3 and 4 show a schematic cross-sectional view and a schematic rear view of the threshing apparatus 100, respectively.
The threshing device 100 is disposed under the threshing unit 110 for performing the threshing process on the cereals conveyed backward by the feed chain device 9, and is threshed by the threshing unit 110 and And a sorting unit 150 that sorts the grains from the fallen grains to be flowed down.

As shown in FIG. 3, the threshing unit 110 includes a handling chamber 120 defined by a threshing machine frame 121, and a handling cylinder 130 that is driven to rotate about a rotation axis along the longitudinal direction of the machine body in the handling chamber 120. And a barrel receiving net 140 disposed below the barrel 130.
The handle 130 has teeth 131 standing upright on the outer peripheral surface, and the teeth 131 can be used to perform threshing on the tips of the cereals conveyed through the feed chain device 9. It has become.
The handling cylinder receiving net 140 is configured to allow only the grains to be threshed by the handling cylinder 130 to have a predetermined outer diameter or less flow down to the sorting unit 150 below.
Further, the barrel receiving net 140 has a feeding port 141 in the vicinity of the rear end portion, and is configured such that a large-diameter grain to be removed falls from the feeding port 141 to the chaff sheave 220.

  The sorting unit 150 is oscillated by a drive mechanism (not shown) to perform a specific gravity sorting by swinging, and a sorting wind is sent to the shaking sorting mechanism 150A and the sorting wind is sent. And a wind sorting mechanism 150B for discharging outside the machine.

The swing sorting mechanism 150A includes a feed pan 210 disposed below the threshing unit 110 so as to receive the threshing flowing down from the threshing unit 110, and the threshing unit 110 and the feed pan 210. A chaff sheave 220 that receives the cereals and sorts the grains from the cereals is provided, and a Strollac 230 disposed behind the chaff sheave 220.
The feed pan 210, the chaff sheave 220, and the stroll rack 230 are disposed between a pair of swing side plates 151 (see FIG. 4) extending in the longitudinal direction of the machine body.

The feed pan 210 is configured to convey the cereal to be drained flowing down from the threshing unit 110 to the chaff sheave 220.
Specifically, the feed pan 210 is a plate body having an upper surface formed in a wave shape in order to convey the grains to be removed to the rear.

The chaff sheave 220 is configured so as to be able to sort the grains to be removed from the threshing unit 110 and the feed pan 210 by specific gravity.
Specifically, the chaff sheave 220 is a plurality of fins 221 extending in the body width direction, and has a plurality of fins 221 arranged in parallel in the longitudinal direction of the body with a space therebetween, and is selected by specific gravity. The grain falls through the interval to the first basket 310 arranged below.
The plurality of fins 221 can swing integrally around their respective upper ends, and the opening width of the gap can be adjusted by changing the inclination angle by a drive mechanism (not shown). It is said that.

The Strolac 230 conveys large unnecessary items such as waste from the cereals sent from the chaff sheave 220 to the rear of the fuselage, and the small cereals containing grains are disposed below. It is comprised so that it can be dropped to the gutter 320.
Specifically, the Strollac 230 is a plurality of plate-like members 231 extending in the longitudinal direction of the machine body, and has a plurality of plate-like members 231 arranged in parallel in the machine body width direction with a space therebetween. A small to-be-depleted grain such as a grain falls to the second pot 320 through the interval.
Each of the plurality of plate-like members 231 has an upper surface formed in a wave shape, thereby promoting the rearward transfer of a large unnecessary object such as waste.

The first basket 310 is formed in a concave shape when viewed from the side by a front inclined plate 315 and a first flow grain plate 311 extending between both side plates 122 (see FIG. 4) of the threshing machine frame. It is comprised so that the fallen first grain can be concentrated on a concave part.
The first conveyor 330 is disposed in the concave portion of the first hook 310 along the body width direction.
The conveyance downstream end of the first conveyor 330 is connected to the cereal conveyor (not shown), and the grains concentrated in the concave part of the first basin 310 are the first conveyor 330 and the cereal. It is carried into the Glen tank 13 by a conveyor.

In the present embodiment, the swing sorting mechanism 150A includes a glenve sheave 240 disposed between the chaff sheave 220 and the first hook 310.
The grain sieve 240 functions as a second selection unit, and is formed of, for example, a net-like body.

The second rod 320 is connected to the rear of the first rod 310.
Specifically, the second basket 320 is formed in a concave shape in a side view by a front inclined plate 325 and a second drifting plate 321 extending between both side plates 122 (see FIG. 4) of the threshing machine frame. The second grain dropped from the Strollac 230 can be concentrated in the concave portion.
A second conveyor 340 is disposed in the concave portion of the second basket 320 along the body width direction.
The downstream end of the conveyor of the second conveyor 340 is connected to a second reduction conveyor (not shown), and the second conveyor 340 and the second reduction conveyor are integrated into the concave portion of the second basket 320. The second grain is returned on the feed pan 210.

The wind sorting mechanism 150B is configured to send a sorting wind to the swing sorting mechanism 150A, and the sorting wind can promote the grain sorting by the swing sorting mechanism 150A. Yes.
Specifically, the wind sorting mechanism 150B sucks the sorting wind from the Kara fan 410 that sends the sorting wind that escapes from below to the swing sorting mechanism 150A and the sorting fan from the outside of the machine. And a suction fan 450 to be discharged.

The tang fan 410 is configured to be rotationally driven around a rotation axis along the body width direction below the swing sorting mechanism 150A and in front of the first hook 310.
Specifically, as shown in FIGS. 3 and 4, the tang fan 410 is disposed in a space defined by both side plates 122 of the threshing machine frame and a tang fan case 420 having an opening at the rear. The sorting air can be sent out rearward and upward.
More specifically, the tang fan case 420 has a tang fan case main body 421 surrounding the tang fan fan 420, a front end portion fluidly connected to the tang fan fan case main body 421, and a rear end portion opened obliquely rearward. And a hollow air passage case 422.
The side plate 122 of the threshing machine frame is provided with a suction port for sucking air into the tang fan fan 410.

In the present embodiment, as described above, the grain sheave 240 is provided between the chaff sheave 220 and the first hook 310.
Accordingly, the wind sorting mechanism 150B is provided with a wind direction plate 430 between the tang fan 410 and the grain sheave 240 with respect to the flow direction of the sorted wind. Are separated into a first sorted wind 104 that passes upward from the chaff sheave 220 and a second sorted wind 402 that faces the first flown grain plate 311.
Preferably, the wind direction plate 430 has a streamlined upper surface in a side view, and the rear end portion 431 protrudes rearward from the rear end portion of the air passage case 422 in the air passage case 422. It is arranged.
By providing such a configuration, the first sorting air can be effectively supplied to the entire area of the Glen sheave 240, thereby improving the sorting efficiency.

The suction fan 450 is configured to suck the sorting air generated by the hot air fan 410 and discharge the dust and the like that has been on the flow of the sorting air to the outside of the apparatus.
Specifically, the suction fan 450 is configured to be driven to rotate about a rotation axis along the body width direction above the swing sorting mechanism 150A.
More specifically, the suction fan 450 is covered with a suction fan cover 460 having a front opening 461 facing the swing sorting mechanism 150A and a rear opening 462 communicated with the outside 500, and the sorting wind is The air is sucked through the front opening 461 and discharged from the rear opening 462.
In addition, both sides of the suction fan 450 are closed by both side plates 122 of the threshing machine frame.

In the combine 1 </ b> A according to the present embodiment, as shown in FIG. 3, an opening 510 is provided between the suction fan 450 and the Strolack 230 to communicate the suction side and the discharge side of the suction fan 450. ing.
By providing the opening 510, it is possible to effectively prevent or reduce the occurrence of turbulent flow in the sorting air from the hot fan 410, and it passes through the swing sorting mechanism 150A upward and is discharged out of the machine. It is possible to effectively form a sorting wind flow.

By the way, when the opening 510 is provided, it is easy to form an effective flow of the sorting wind, but the grains scattered from the swing sorting mechanism 150A are discharged to the outside of the machine through the opening 510. It tends to occur.
In view of this point, the combine 1A according to the present embodiment includes a blocking member 550 that can be elastically deformed around the base end portion so as to block at least a part of the opening 510, as shown in FIG. In addition, the blocking member 550 causes the scattered grains to flow down to the second basket 320 to reduce loss.
Further, since the shielding member 550 is formed of a member that can be elastically deformed, the shielding member 550 can be used even when there is a large amount of unnecessary material such as waste that is transported out of the machine by the Strollac 230. Since the 550 is bent, clogging is also prevented.
Such a blocking member 550 can be formed of various materials as long as it exhibits the above-described action. For example, rubber is preferably used.

Preferably, the Strollac 230 is configured to have a recess 232 between a front end and a rear end, and the free end 551 of the blocking member 550 is the same as the recess 230 in the longitudinal direction of the airframe. The blocking member 550 can be disposed so as to be located behind the position or the recess 232.
By providing such a configuration, it is possible to more effectively prevent clogging of unnecessary objects conveyed rearward by the Strollac 230.

Further, in the combine 1A according to the present embodiment, as shown in FIG. 3, the sorter air from the Kara fan 410 is passed between the chaff sheave 220 and the Strollac 230 in the longitudinal direction of the machine body. An airflow direction plate 600 is provided to guide the airflow to the airflow direction plate 450, thereby improving the airway communication from the tang fan fan 410 to the suction fan 450 and improving the grain sorting performance.
Specifically, the wind direction plate 600 is a plate-like body extending along the width direction of the machine body, and has a rearward inclined posture in which a lower end portion is positioned forward and an upper end portion is positioned rearward.

In the present embodiment, a plurality of the wind direction plates 600 are provided.
The plurality of wind direction plates 600 (in the illustrated form, first to third wind direction plates 601 to 603) are juxtaposed in the longitudinal direction of the machine body with a gap provided therebetween.
In such a configuration, the gap between the fin 221R at the end of the chaff sheave 220 and the wind direction plate (first wind direction plate 601 in the illustrated embodiment) located in the forefront and between adjacent wind direction plates. This air gap forms an air passage from the hot fan 410 to the suction fan 450.

By providing such a wind direction plate 600, it is possible to clarify the flow of the selected wind from the Kara fan 410 to the suction fan 450 and effectively prevent the generation of turbulent flow, so that the scattered grains can be opened in the opening. It is possible to effectively prevent the battery from being discharged out of the apparatus via 510.
Further, in the present embodiment, as shown in FIG. 3, the base end portion 552 of the shielding plate 550 is connected to the vicinity of the lower end portion of the front opening 461 of the fan case 460.
Therefore, the scattered grains from the swinging selection mechanism 150A can be effectively dropped onto the second basket 320 by the shielding plate 550.

Preferably, the lower end portion of the wind direction plate 600 is lower than the lower end portion of the fins 21 in the chaff sheave 220 so as to be close to the first flow grain plate 311 that defines the air path of the selected wind from the tang fan fan 410. Located in.
Thus, by positioning the lower end of the wind direction plate 600 downward, the flow of wind from the hot fan 410 to the suction fan 450 can be more effectively formed.

Moreover, in the aspect in which a plurality of the wind direction plates 600 are provided as in the present embodiment, more preferably, the sorting wind guided by the first drifting plate 311 from the wind direction plate 601 located at the foremost position. As the wind direction plate 600M (the second wind direction plate 602 in the embodiment shown in the figure, which is referred to as the maximum wind amount wind direction plate), which is guided most frequently, can be configured such that the upper end portion is positioned upward. A wind flow from the hot fan 410 to the suction fan 450 can be more effectively formed.
More preferably, the wind direction plate (in the illustrated form, the third wind direction plate 603) located behind the maximum air volume wind direction plate 600M goes to the wind direction plate arranged behind the maximum air volume air direction plate 600M. Accordingly, the upper end portion is configured to be positioned below, and thereby, it is possible to efficiently transport unnecessary objects such as waste from the chaff sheave 220 to the stroller 230.

  Preferably, the plurality of wind direction plates 600 are configured such that a lower end portion thereof is positioned downward from a wind direction plate located on the front side to a wind direction plate located on the rear side. Thus, the flow of wind from the suction fan 450 to the suction fan 450 can be more effectively formed.

FIG. 1 is a side view of a combine according to an embodiment of the present invention. FIG. 2 is a plan view of the combine shown in FIG. FIG. 3 is a schematic cross-sectional view of the threshing apparatus in the combine shown in FIGS. 1 and 2. FIG. 4 is a schematic rear view of the threshing apparatus shown in FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A Combine 110 Threshing part 150 Sorting part 150A Oscillating sorting mechanism 220 Chaff sheave 230 Strollack 232 Strollack concave part 410 Kara fan 450 Suction fan 460 Suction fan cover 500 Outside 510 Opening 550 Shielding member 600 Wind direction plate

Claims (7)

A threshing section for threshing the harvested cereal grains;
A chaff sheave for sorting the grains from the threshed grains threshed by the threshing unit, and a swing sorting mechanism that is disposed behind the chaff sheave and has a strolac for transporting unnecessary objects to the rear of the machine body,
A tang fan that sends out a sorting wind that passes upward from below to the swing sorting mechanism,
A suction fan positioned above the swing sorting mechanism, comprising a suction fan for sucking the sorting wind from the Kara fan and discharging it out of the machine;
Between the suction fan and the Strollac, an opening that communicates the suction side and the discharge side of the suction fan is provided,
The combine characterized by the fact that the shielding member which can be elastically deformed around the base end is provided so as to block at least a part of the opening. A suction fan cover that covers the suction fan, further comprising a suction fan cover having a suction port facing the swing selection mechanism and a discharge port communicated to the outside of the machine,
2. The combine according to claim 1, wherein the shielding member has a base end portion connected to the suction fan cover in a state where a free end portion has a gap with the strolac. The Strollac has a recess recessed downward between the front end and the rear end in the longitudinal direction of the machine body,
The said blocking member is arrange | positioned so that a free end part may be located in the same position as the said recessed part or the back of this recessed part regarding the longitudinal direction of an airframe. Combine.   An airflow direction plate extending in the width direction of the airframe is provided between the chaff sheave and the Strollac in the longitudinal direction of the airframe so as to guide the selection air from the Kara fan to the suction fan. The combine according to any one of claims 1 to 3.   The lower end portion of the wind direction plate is located below the lower end portion of the chaff sheave so as to be close to a flown slab plate that defines an air path of the sorting wind from the tang fan. 4. Combine according to 4. A plurality of the wind direction plates arranged side by side in the longitudinal direction of the aircraft with a gap between each other,
The plurality of wind direction plates are configured such that the upper end portion is positioned upward as going from the wind direction plate located at the foremost position to the wind direction plate that guides the selected wind guided by the drifted grain plate the most. The combine according to claim 5. A plurality of the wind direction plates arranged side by side in the longitudinal direction of the aircraft with a gap between each other,
The plurality of wind direction plates are configured such that the lower ends thereof are positioned downward from the wind direction plate located on the front side to the wind direction plate located on the rear side. Crab combine.

Images