JP2002199810A - Device for supplying wind for separating of threshing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve separating performances of a threshing apparatus by a simple structure by suppressing vortexes in separating wind W and by optimizing an air flow distribution and wind direction of the separating wind W in a separating wind supplyer of the threshing apparatus. SOLUTION: This device for supplying the separating wind W of the threshing apparatus is obtained by extending an end on the downstream side of the air delivering port 3 to the upper part of the first grade grain recovering part 7 and forming a rear bent piece part bent to the lower side in the wind direction plate 4 and arranging an auxiliary straightening piece 5 formed in a slender state with a sufficiently short length in the flow channel direction in the width direction than the rear bent part at a prescribed interval above a flexion point to the rear bent piece part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for arranging karaminos in front of and below a grain sieve, and providing a first material collecting section for collecting kernels leaking below the grain sieve. Between the sheave and the sheave, the air outlet for Karino is opened below and forward of the sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower parts is provided at or near the air outlet, and the air outlet for the air outlet is provided. The present invention relates to a sorting wind supply device for a threshing device provided over substantially the entire width.

[0002]

2. Description of the Related Art In general, in a threshing apparatus mounted on a combine, a karamin for wind selection is disposed in front of and below a grain sieve, and a first-part collecting part for collecting grains leaking below the grain sieve is provided. An air outlet for the Karino air is opened below and forward of the Glen Sheave between the first material collecting unit and the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower portions, the air outlet or A sorting air supply device is provided in the vicinity thereof. The wind direction plate is arranged for the purpose of optimizing the wind direction and the wind speed in the downstream wind path, and the sorting wind from the Karamino fan, and usually has a vertex on the downstream side of the upper surface. A triangular section having a thicker downstream side is used.

[0003]

By the way, the conventional wind direction plate has the characteristic that the flow velocity of the screening wind passing above it can be increased, but at the downstream end, the screening wind along the upper surface is formed. The flow may separate from the upper surface of the wind direction plate, and a vortex of the sorted wind may be generated near the downstream end of the wind direction plate. In addition, since the lower surface of the air passage near the air outlet of Karamin forms a step with the first material recovery part, the vortex of the sorting wind flowing toward the lowermost material recovery part is reduced. Easy to occur. Since such a vortex portion of the sorting wind is located below the Glen Sheave, it is easy to wind a mixture such as straw waste mixed with the grains leaking from the Glen Sheave into the first thing collection part, This can be a factor that hinders sorting in the wind path. Therefore, in order to suppress the vortex of the sorting wind flowing toward the first object recovery unit, the downstream end of the wind direction plate is extended to above the first object recovery unit, and is extended. It is conceivable to bend the portion downward, but there is a concern that a new vortex may be generated downstream of the bent portion.

Accordingly, an object of the present invention is to improve the sorting performance of a threshing apparatus which can improve the sorting performance by suppressing the vortex generated in the sorting wind with a simple structure while optimizing the distribution of the sorting wind and the wind direction. The point is to provide a device.

[0005]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[0006] [Structure] A feature of the structure according to claim 1 is that a karino is arranged in front of and below the grain sheave, and a first material recovery part is provided for collecting kernels leaking below the grain sheave. Between the collecting unit and the Glen Sheave, the Karin air outlet is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower parts, the air outlet or in the vicinity thereof, In the sorting wind supply device of a threshing device provided over substantially the entire width of an air outlet, the wind direction plate extends downward at a downstream end of the air outlet to above the first material recovery unit and is directed downward. And forming a rear bent piece part bent at the same time, above the bending point to the rear bent piece part, in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part. Slender formed complement The rectification pieces lies in that is disposed at a predetermined interval with respect to the rear bent piece.

According to the first aspect of the present invention, a wind direction plate is provided over substantially the entire width of the air outlet, and the downstream end of the wind direction plate is located above the most object recovery section. It extends to prevent the second thing or the like from dropping into the first thing collection part. Then, it is bent downward to form a rear bent piece, thereby suppressing a vortex that is likely to be generated on the downstream side near the first object recovery section. Furthermore, since the flow path is enlarged and formed above the rear bent piece, the streamline of the sorting wind is diffused and becomes unstable, so that a vortex is easily generated. The generation of the vortex is suppressed by arranging a short auxiliary rectifying piece in the direction of the streamline above the inflection point. In other words, by utilizing the fact that streamlines along the surface of the auxiliary rectifying piece arranged in the streamlines to be diffused are likely to be formed, the flow of the sorting wind is stabilized, and the generation of vortices is suppressed. In other words, the auxiliary rectifying piece only needs to have a length in the streamline direction capable of forming a streamline along its surface.

[Effect] Therefore, while maintaining the distribution of the amount of the sorting wind and the optimization of the wind direction, the vortex generated in the sorting wind can be suppressed with a simple structure, and the sorting performance can be improved.

The structure, operation and effect of the invention according to claim 2 are as follows.

[0010] According to a second aspect of the present invention, a garbage is disposed in front of and below the grain sieve, and a first material collecting unit is provided for collecting kernels leaking below the grain sieve. Between the collecting unit and the Glen Sheave, the Karin air outlet is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower parts, the air outlet or in the vicinity thereof, In the sorting wind supply device of a threshing device provided over substantially the entire width of an air outlet, the wind direction plate extends downward at a downstream end of the air outlet to above the first material recovery unit and is directed downward. And forming a rear bent piece part bent at the same time, above the bending point to the rear bent piece part, in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part. Slender formed complement The rectifying piece is arranged at a predetermined interval with respect to the rear bent piece part, and a plate-shaped support member is provided upright on the middle upper surface of at least the lateral width direction of the rear bent piece part along the flow direction of the sorting wind. The supporting member supports the intermediate portion of the auxiliary rectifying piece.

According to the second aspect of the present invention, a wind direction plate is provided over substantially the entire width of the air outlet, and the downstream end of the plate is disposed above the material recovery section. It extends to prevent the second thing or the like from dropping into the first thing collection part. Then, it is bent downward to form a rear bent piece, thereby suppressing a vortex that is likely to be generated on the downstream side near the first object recovery section. Furthermore, since the flow path is enlarged and formed above the rear bent piece, the streamline of the sorting wind is diffused and becomes unstable, so that a vortex is easily generated. The generation of the vortex is suppressed by arranging a short auxiliary rectifying piece in the direction of the streamline above the inflection point. Furthermore, by supporting the intermediate portion of the auxiliary rectifying piece by erected a support member on the upper surface of the intermediate portion of the rear bent piece portion, to prevent bending and vibration of the auxiliary rectifying piece,
The rectification function is maintained well. In other words, by utilizing the fact that streamlines along the surface of the auxiliary rectifying piece arranged in the streamlines to be diffused are likely to be formed, the flow of the sorting wind is stabilized, and the generation of vortices is suppressed. In other words, the auxiliary rectifying piece only needs to have a length in the streamline direction capable of forming a streamline along its surface.

[Effect] Accordingly, it is possible to improve the sorting performance by suppressing the vortex generated in the sorting wind with a simple structure while maintaining the distribution of the amount of the sorting wind and the optimization of the wind direction.

The structure, operation and effect of the invention according to claim 3 are as follows.

According to a third aspect of the present invention, a karamin is disposed in front of and below the grain sieve, and a first-piece collecting section is provided for collecting kernels leaking below the grain sheave. Between the collecting section and the Glen Sheave, the Karin air outlet is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower parts, the air outlet or in the vicinity thereof, In the sorting wind supply device of a threshing device provided over substantially the entire width of an air outlet, the wind direction plate extends downward at a downstream end of the air outlet to above the first material recovery unit and is directed downward. And forming a rear bent piece part bent at the same time, above the bending point to the rear bent piece part, in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part. Slender formed complement The straightening piece is arranged at a predetermined interval with respect to the rear bent piece part, and a plate-like support member is provided upright on the front end upper surface of the rear bent piece part along the flow direction of the sorting wind to support the auxiliary piece. The rectifying piece is supported, and the wind direction plate is formed integrally with the supporting member and the auxiliary rectifying piece from a synthetic resin material.

According to a third aspect of the present invention, a wind direction plate is provided over substantially the entire width of an air outlet, and the downstream end of the plate is located above the material recovery section. It extends to prevent the second thing or the like from dropping into the first thing collection part. Then, it is bent downward to form a rear bent piece, thereby suppressing a vortex that is likely to be generated on the downstream side near the first object recovery section. Furthermore, since the flow path is enlarged and formed above the rear bent piece, the streamline of the sorting wind is diffused and becomes unstable, so that a vortex is easily generated. The generation of the vortex is suppressed by arranging a short auxiliary rectifying piece in the direction of the streamline above the inflection point. Furthermore, by supporting the intermediate portion of the auxiliary rectifying piece by erected a support member on the upper surface of the front end portion of the rear bent piece portion, to prevent bending and vibration of the auxiliary rectifying piece,
The rectification function is maintained well. By forming this wind direction plate and the auxiliary rectifying piece together with synthetic resin,
Manufacturing becomes easy, and since it can be formed at predetermined intervals in advance, the relative positional relationship is also stabilized. In other words, by utilizing the fact that streamlines along the surface of the auxiliary rectifying piece arranged in the streamlines to be diffused are likely to be formed, the flow of the sorting wind is stabilized, and the generation of vortices is suppressed. In other words, the auxiliary rectifying piece only needs to have a length in the streamline direction capable of forming a streamline along its surface.

[Effect] Therefore, while maintaining the distribution of the amount of the sorting wind and the optimization of the wind direction, the vortex generated in the sorting wind can be suppressed with a simple structure, and the sorting performance can be improved.

The structure, operation and effect of the invention according to claim 4 are as follows.

[Structure] A feature of the structure according to claim 4 is that a karino is arranged in front of and below the grain sieve, and a first material collecting part for collecting kernels leaking below the grain sheave is provided. Between the collecting unit and the Glen Sheave, the Karin air outlet is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower parts, the air outlet or in the vicinity thereof, In the sorting wind supply device of a threshing device provided over substantially the entire width of an air outlet, the wind direction plate extends downward at a downstream end of the air outlet to above the first material recovery unit and is directed downward. And forming a rear bent piece part bent at the same time, above the bending point to the rear bent piece part, in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part. Thin over the entire width The auxiliary rectifying piece formed is arranged at a predetermined interval with respect to the rear bent piece part, and a plate-like support member along the flow direction of the sorting wind is arranged on the upper surface of the front end of the rear bent piece part in the wind direction. The auxiliary flow straightening piece is supported by being erected at both ends in the width direction of the plate, and the wind direction plate and the auxiliary flow straightening piece are attached to the air outlet through support members disposed at both ends of the wind direction plate. There is a point.

According to the fourth aspect of the present invention, a wind direction plate is provided over substantially the entire width of the air outlet, and the downstream end of the wind direction plate is located above the most material recovery section. It extends to prevent the second thing or the like from dropping into the first thing collection part. Then, it is bent downward to form a rear bent piece, thereby suppressing a vortex that is likely to be generated on the downstream side near the first object recovery section. Furthermore, since the flow path is enlarged and formed above the rear bent piece, the streamline of the sorting wind is diffused and becomes unstable, so that a vortex is easily generated. The generation of the vortex is suppressed by arranging a short auxiliary rectifying piece in the direction of the streamline above the inflection point. Furthermore, by supporting the intermediate portion of the auxiliary rectifying piece by erected a support member on the upper surface of the front end portion of the rear bent piece portion, to prevent bending and vibration of the auxiliary rectifying piece,
The rectification function is maintained well. This wind direction plate and the auxiliary rectifying piece are connected by support members arranged at both ends,
By attaching these to the air outlet through the support member, the relative positional relationship is stabilized, and assembly and maintenance are facilitated. In other words, by utilizing the fact that streamlines along the surface of the auxiliary rectifying piece arranged in the streamlines to be diffused are likely to be formed, the flow of the sorting wind is stabilized, and the generation of vortices is suppressed. In other words, the auxiliary rectifying piece only needs to have a length in the streamline direction capable of forming a streamline along its surface.

[Effect] Therefore, while maintaining the distribution of the amount of the sorting wind and the optimization of the wind direction, the vortex generated in the sorting wind can be suppressed with a simple structure, and the sorting performance can be improved.

The configuration, operation and effect of the invention according to claim 5 are as follows.

[Structure] A feature of the structure according to claim 5 is that, in any one of the structures of claims 1 to 4, the auxiliary rectifying piece is arranged in parallel with the upper surface of the rear bent piece portion. On the point.

[Operation] By arranging the auxiliary rectifying piece in parallel with the upper surface of the rear bent piece portion, the streamline along the auxiliary rectifying piece is further stabilized, and separation of the streamline from the upper surface is prevented. As a result, the downstream flow is stabilized.

[Effect] Generation of a vortex on the downstream side of the wind direction plate can be suppressed more reliably.

[0025]

An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an example of a combine equipped with a threshing device according to the present invention. A traveling machine body F including a crawler-type traveling device and capable of traveling is equipped with a cutting unit K in front, and A threshing device D disposed on the traveling body F from the side of the boarding operation unit S to the rear thereof, and a grain arranged behind the boarding operation unit S on the side of the threshing device D and cut by the front cutting unit K. A grain tank G for housing and transporting the grains after threshing from the culm by the threshing apparatus D is mounted.

FIG. 3 shows an example of a threshing device according to the present invention mounted on the combine. The threshing device D is a feed chain 16 which holds a stem of a grain culm cut by a cutting unit K provided in front of the fuselage. While holding the side, threshing from the tip of the ear. In the threshing device D, the tip portion is handled by a handling cylinder 18 driven and rotated in a handling room 17, and the handled product leaking from the receiving net 19 is subjected to grain, second product, Sorted into waste waste, etc., and the grains are discharged to the laterally outer frying mechanism 8 (see FIG. 8) by the first thing collection mechanism 7a, and the second thing is shaken by the second thing collection mechanism 9a to be described later. It is configured to be returned to the moving sorting device 11 and reprocessed, and the fine waste waste is discharged outside the machine by the dust blower 14. The frying mechanism 8 includes:
As shown in FIG. 8, the grain, which is the first thing, is fed into the Glen tank G from the upper side through the Glen supply section 8a at the upper end.

As shown in FIG. 3, the sorting section 10 includes a grain sieve 12 for finely sorting the roughly-processed processed products into grains and second items, and a second portion disposed behind the grain sieve. Chaff sieve 1 for returning grains in a product to the Glen Sieve 12
And a rocking sorter 11 for supplying a sorting wind W to the rocking sorter 11.
And a sorting air supply device according to the present invention.

The Karino 1 is located below and in front of the Glen Sheave 12. Below the Glen Sheave 12, there is provided the first thing collection unit 7 for collecting the grain leaking from the Glen Sheave 12, provided with the first thing collection mechanism 7a. A second object recovery unit 9 including the second object recovery mechanism 9a that recovers the second material mixed with waste and the like and returns the second product to the swing sorting device 11 is provided. The Karamin 1 has a Karamin fan 2 that sends out the sorting wind W,
Between the first thing collection part 7 and the Glen Sheave 12,
An air outlet 3 for the Karin 1 is opened below and forward of the Glen Sheave 12. That is, the air outlet 3 is formed on the front end rising portion 15a of the threshing apparatus bottom plate 15. Then, at or near the air outlet 3,
A wind direction plate 4 is provided for vertically separating the sorting wind W from the Karino fan 2. The lower surface of the air passage near the air outlet 3 of the Karamin 1 forms a step 3b with the front end rising portion 15a.

As shown in FIG. 6, the wind direction plate 4 is disposed over substantially the entire width of the air outlet 3 of the kara 1 and, as shown in FIG. Put out. Then, the downstream portion of the wind direction plate 4 is bent downward to form the rear bent piece portion 4a. Further, above the bending point to the rear bending piece portion 4a, the wind direction plate 4
An auxiliary rectifying piece 5 for rectifying the sorting wind W1 on the upper surface of the rectifier is provided. The wind direction plate 4 has its entire length provided over the entire width of the air outlet 3 of the car 1, and the auxiliary straightening piece 5 is formed to be elongated over substantially the entire length of the wind direction plate 4. The width of the auxiliary rectifying piece 5, that is, the length in the flow direction is formed sufficiently shorter than the width of the rear bent piece 4a, that is, the length of the rear bent piece 4a in the flow direction.

In this example, as shown in FIG. 5, the auxiliary rectifying piece 5 is supported by a plate-like supporting member 6 erected on the upper surface of the middle part of the wind direction plate 4 in the longitudinal direction. The support member 6 is arranged in a direction along the direction of the flow of the sorting wind W <b> 1, and is provided so as to support an intermediate portion in the length direction of the auxiliary rectifying piece 5. In addition to the support member 6A provided upright at the center of the wind direction plate 4 as the support member 6, a plate-shaped support member 6B is also provided on the upper surface of both ends in the longitudinal direction of the wind direction plate 4.
To support both ends of the auxiliary rectifying piece 5 in the length direction. Thus, the support member 6A and the support member 6B
The auxiliary rectifying piece 5 is supported by the supporting member 6 to prevent bending and vibration of the auxiliary rectifying piece 5 caused by the flow of the sorting wind W1 along the upper surface of the wind direction plate 4. It is desirable that the wind direction plate 4, the auxiliary rectifying piece 5, and the support member 6 be integrally formed of a synthetic resin material as shown in the figure. As shown in the drawing, it can be attached to the side wall 3a of the air outlet 3 via the support member 6B. It is preferable that the auxiliary rectifying piece 5 is arranged in parallel with the rear bent piece part 4a. In other words, by increasing the cross-sectional area of the flow path above the rear bent piece portion 4a of the wind direction plate 4 and arranging the auxiliary rectifying piece 5 in the streamline of the sorted wind W1 to be diffused, the auxiliary rectifying piece 5 Facilitates the formation of streamlines along the surface of
It is only necessary to stabilize the flow and suppress the generation of vortices, and it is only necessary to secure a narrow width as the length in the flow path direction that enables the formation of streamlines along the surface of the auxiliary rectifying piece 5. is there.

With the above configuration, as shown in FIG. 4, the rear bent piece portion 4a in which the cross-sectional area of the flow path above the wind direction plate 4 increases.
Turbulence generated in the flow of the sorting wind W1 along the wind direction can be prevented, and the generation of a vortex on the downstream side of the wind direction plate 4 can be prevented. By the way, if the width of the auxiliary rectifying piece 5, that is, the length of the auxiliary rectifying piece 5 in the flow path direction is made larger than necessary, the separation of the streamline of the sorting wind W1 from its surface is likely to occur, and the formation of vortices Care must be taken because it is easier to promote. Further, in the direction along the lower surface of the wind direction plate 4 in the rear bent piece portion 4a, the sorted wind W2 flowing to the lower side of the wind direction plate 4 is guided to the downstream side. Sorting style W
2 to prevent the mixture such as straw waste accompanying the grain leaking from the grain sieve 12 from flowing down to the downstream side by the sorting wind W, thereby preventing such a mixture from being mixed into the first material recovery section 7. it can. In addition, since the wind direction plate 4, the support member 6, and the auxiliary rectifying piece 5 are formed of a synthetic resin material, they can be easily integrally formed.

Then, as shown in FIG. 5, the wind direction plate 4 formed integrally with the auxiliary rectifying piece 5 via the support member 6 is connected to the support member 6 as shown in FIG. It is easy to attach the air flow direction plate 4 to the side wall 3a of the air outlet 3 via the support members 6B provided on both ends of the wind direction plate 4, and the setting of the mounting posture of the air direction plate 4 is also facilitated. Further, by integrally molding, it is easy to maintain the characteristics of the wind direction plate 4 provided with the auxiliary rectifying pieces 5. The auxiliary rectifying piece 5 is attached in parallel with the upper surface of the rear bent piece part 4a because of the sorting wind W above the rear bent part 4a.
This is because it is preferable to suppress the disturbance of 1 as much as possible. If the width of the auxiliary rectification piece 5 is small, there is no particular problem even if it is slightly inclined with respect to the upper surface of the rear bent piece portion 4a. The vertical cross-sectional shape of the auxiliary rectifying piece 5 is as shown in FIG.
It is preferably a streamlined type, but may be triangular as shown in FIG. 7 (b), or may be rhombic as shown in FIG. It may be a cross section. This is the same for the support member 6.

As shown in FIG. 8, the above-mentioned combine is provided with an in-tank blower 20 above the front of the fuselage in the Glen tank G. The in-tank blower 20 removes straw waste and the like mixed in the first thing collected in the first thing collecting section 7 and fed into the tank from the Glen supply section 8a of the grain raising mechanism 8 as a second thing. This is provided for separation. For this purpose, an opening is provided in the side wall above the rear part of the Glen tank G on the side of the Glen supply part 8a to form a secondary discharge part 21. In this secondary discharge section 21,
As shown in FIG. 9, one end of the second product return duct 22 is connected, and the other end of the second product return duct 22 is connected above the rocking and sorting device 11 of the threshing device D. That is, straw waste mixed with the grains supplied from the Glen supply unit 8a and supplied into the Glen tank G is returned to the swing sorting apparatus 11 as a second product. In this way, the amount of the second thing mixed into the first thing put into the Glen tank G is reduced.

With the above configuration, the sorting unit 1 of the threshing apparatus D
In addition, while minimizing the incorporation of a second material such as straw waste into the first material at 0, the second material mixed into the first material to be charged into the Glen tank G is returned to the sorting unit 10, Straw chips and the like can be prevented from being mixed into the collected grains.

[Another Embodiment] The auxiliary rectifying piece 5 may be attached to the air outlet 3 independently of the wind direction plate 4, and only a central portion thereof is supported by the support member 6. May be configured to be supported on the rear bent piece portion 4a. Further, the wind direction plate 4 and the auxiliary rectifying piece 5
And the support member 6 may be formed separately from each other and assembled to the wind direction plate 4 attached to the air outlet 3. Further, the material is not limited to a synthetic resin material, but may be a sheet metal or a metal casting. Even in the case of a metal casting, it can be integrally formed, and as described above,
The supporting members 6B attached to both ends may be attached to the side wall 3a of the air outlet 3, or a bracket or the like provided on the side wall 3a without providing the supporting members 6B at both ends on the ends. The wind direction plate 4 may be attached to the air outlet 3 using an attachment member.

The width of the air outlet 3 of the auxiliary rectifying piece 5 in the width direction may be shorter than the length of the air outlet 3 of the air flow direction plate 4 in the width direction. In short, the auxiliary rectifying piece 5 has only to arrange a streamline above the rear bent piece 4a of the wind direction plate 4, and it is sufficient that the auxiliary rectifying piece 5 has a length and a width necessary for the streamline. The cross section of the auxiliary rectifying piece 5 may be elliptical or circular.

Further, in the above-described embodiment, the in-tank blower 20 is provided in the Glen tank G, and the straw waste mixed in the first thing supplied from the Glen supply unit 8a of the grain raising mechanism 8 is provided. And the like, and the structure is described in which the second product is returned to the upper part of the swing sorting device 11 through the second product return duct 22. However, such a configuration in the Glen tank G may be omitted. At least, the wind direction plate 4 may be configured to be combined with the auxiliary rectifying piece 5 so as to prevent mixing of straw chips and the like into the grains collected in the first thing collection unit 7.

[0038]

EXAMPLE In order to clarify the effect of the auxiliary rectifying piece 5, a simulation of the flow of the sorting wind W was performed. In the embodiment, the width of the rear bent piece portion 4a of the wind direction plate 4 is set to 40 mm,
Above the inflection point, at a distance of 18 mm, a thickness of 2 m
The auxiliary rectifying piece 5 having a rectangular cross section and a width of 8 mm was arranged. The case where the wind direction plate was not provided was referred to as Comparative Example 1, and the case where the wind direction plate 4 having the same shape was provided and the auxiliary rectifying piece was not provided was referred to as Comparative Example 2. As shown in FIG. 10, the result of the simulation is that in Comparative Example 1 having no wind direction plate,
In the lower surface of the air passage near the air outlet 3 of the above, the sorting wind W
Streamline is separated and heads toward the grain sheave 12 with almost no change in its density, and a large vortex formation area A is formed almost immediately below the grain sheave 12 and at a position near the first object recovery part 7. . In Comparative Example 2, as shown in FIG. 11, the large vortex forming area A near the first object recovery section 7 is reduced, but the streamline of the sorting wind W1 is separated from the upper surface of the rear bent piece 4a. And the rear bent piece portion 4a
A vortex region B is generated between the lower stream and the streamline of the sorting wind W2. The vortex region B is not preferable because there is a possibility that the second material leaking from the Glen Sheave 12 may be attracted. On the other hand, in the embodiment, as shown in FIG. 4, the streamline of the sorting wind is diffused without difficulty from above the bending point to the downstream side, and the vortex forming area A near the first object recovery unit 7 is formed. Is very small. If the vortex forming area A is reduced to this extent, the second product from the Glen sheave 12 is sent downstream by the sorting wind W1, so that the second product is sufficiently mixed into the first material recovery unit 7. It can be seen that it can be suppressed.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a combine equipped with a threshing apparatus according to the present invention.

FIG. 2 is a plan view showing an example of a combine equipped with a threshing apparatus according to the present invention.

FIG. 3 is a vertical side view of the threshing apparatus.

FIG. 4 is a longitudinal sectional view of a main part showing an arrangement of a wind direction plate;

FIG. 5 is a perspective view showing a configuration of a wind direction plate.

FIG. 6 is a plan sectional view of a main part showing an arrangement of a wind direction plate;

FIG. 7 is a longitudinal sectional view showing an example of a sectional shape of an auxiliary rectifying piece.

FIG. 8 is a partially cutaway perspective view showing the internal structure of a Glen tank.

FIG. 9 is a rear view of the combine showing a structure showing a connection between the Glen tank and the threshing device.

FIG. 10 is an explanatory view of a streamline of a sorting wind according to a conventional configuration.

FIG. 11 is an explanatory view of a streamline of a sorting wind according to another configuration.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Karino 2 Karino fan 3 Air outlet 4 Air direction plate 4a Rear bent piece 5 Auxiliary rectifying piece 6 Support member 6A Support member 6B Support member 7 First thing collection part 12 Glensive W Sorting wind W1 Sorting wind W2 Sorting wind

Claims (5)

[Claims] Claims: 1. A garbage is disposed in front of and below a grain sieve, and a first material collecting part for collecting kernels leaking below the Glen Sheave is provided. Between the first material collecting part and the Glen Sheave, An air outlet for the Karino air is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower portions is provided at or near the air outlet, over substantially the entire width of the air outlet. A sorting wind supply device of a threshing device, wherein the wind direction plate, a downstream end portion of the downstream side of the air outlet is extended to above the first object recovery unit and bent downward to bend downward. Along with the bending point to the rear bent piece part, an auxiliary rectifying piece formed in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part, For the rear bent piece Sorting air supply device threshing apparatus is disposed at a predetermined interval. 2. A method for arranging a garbage in front of and below a grain sieve, and providing a first material collecting part for collecting kernels leaking below the grain sieve, wherein between the first material collecting part and the Glen sheave, An air outlet for the Karino air is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower portions is provided at or near the air outlet, over substantially the entire width of the air outlet. A sorting wind supply device of a threshing device, wherein the wind direction plate, a downstream end portion of the downstream side of the air outlet is extended to above the first object recovery unit and bent downward to bend downward. Along with the bending point to the rear bent piece part, an auxiliary rectifying piece formed in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part, For the rear bent piece Arranged at a predetermined interval, a plate-shaped support member is erected along the flow direction of the sorting wind, at least on the upper surface of the middle portion in the lateral width direction of the rear bent piece portion, and the support member serves as the auxiliary rectifying piece. Sorting air supply device for threshing equipment supporting the middle part. 3. A method of disposing a karamino in front of and below a grain sieve, and providing a first material collecting part for collecting kernels leaking below the Glen Sheave, and between the first material collecting part and the Glen Sheave. An air outlet for the Karino air is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower portions is provided at or near the air outlet, over substantially the entire width of the air outlet. A sorting wind supply device of a threshing device, wherein the wind direction plate, a downstream end portion of the downstream side of the air outlet is extended to above the first object recovery unit and bent downward to bend downward. Along with the bending point to the rear bent piece part, an auxiliary rectifying piece formed in the width direction of the air outlet with a flow direction length sufficiently shorter than the rear bent piece part, For the rear bent piece Arranged at a predetermined interval, on the upper surface of the front end portion of the rear bent piece portion, a plate-shaped support member along the flow direction of the sorting wind is erected to support the auxiliary rectification piece, the wind direction plate, A separating wind supply device for a threshing device integrally formed of a synthetic resin material together with a support member and the auxiliary rectifying piece. 4. A method for arranging a karamino in front of and below a grain sieve, and providing a first material collecting part for collecting kernels leaking below the grain sieve, wherein between the first material collecting part and the grain sieve, An air outlet for the Karino air is opened below and forward of the Glen Sheave, and a wind direction plate for separating the sorting wind from the Karino fan into upper and lower portions is provided at or near the air outlet, over substantially the entire width of the air outlet. A sorting wind supply device of a threshing device, wherein the wind direction plate, a downstream end portion of the downstream side of the air outlet is extended to above the first object recovery unit and bent downward to bend downward. And an auxiliary rectifying piece formed to be elongated over the entire width in the width direction of the air outlet with a length in the flow direction sufficiently shorter than the rear bent piece above the bending point to the rear bent piece. The rear part Arranged at a predetermined interval with respect to the bent piece portion, plate-shaped support members along the flow direction of the sorting wind are erected on both ends in the width direction of the wind direction plate on the front end upper surface of the rear bent piece portion. A separating wind supply device for a threshing device, wherein the auxiliary rectifying piece is supported by the louver and the air directional plate and the auxiliary rectifying piece are attached to the air outlet through supporting members disposed at both ends of the wind directional plate. 5. The sorting air supply device for a threshing device according to claim 1, wherein the auxiliary rectifying piece is arranged in parallel with an upper surface of the rear bent piece portion.