JP2018085958A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To address such a problem in which, when removing relatively large misplaced materials such as waste straws from objects to be processed by a sheave, the misplaced materials such as the waste straws are entangled in a sorting net and attached thereto and inhibit fall of the misplaced materials to the lower-side sheave to lower sorting efficiency and accuracy.SOLUTION: The combine harvester includes: a swinging selection rack 25 for sorting kernels in processing objects, on a lower side of a threshing chamber 15 including a threshing cylinder 20 journaled thereto; a primary conveyor 35 for collecting primary products out of the processing objects fallen from the swinging selection rack 25, on the lower side of the swinging selection rack 25; a sheave 27 for sorting the kernels and waste straws in the processing objects at a site on an upper side of the first conveyer 35 in the swinging selection rack 25; and a sorting net 40 for receiving fallen objects fallen from the threshing chamber 15, on an upper side of the sheave 27 at a prescribed interval T apart from the sheave 27 in the vertical direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a combine.

  Conventionally, on the underside of the handling cylinder, a swing sorting shelf that has a sheave and swings in the front-rear direction to sort the grains in the workpiece is provided, and a sorting net is provided at the upper end of each fin of the sheave. Such a configuration is known (Patent Document 1).

JP 2009-125042

The known example simply removes relatively large debris, etc., from the material to be processed by the sheave to reduce the sheave processing load. There is a problem that impurities are entangled and adhered, and on the contrary, the object to be processed is dropped to the lower sheave, and the sorting efficiency and accuracy are reduced as a whole.
In the present application, in providing the sorting network, the arrangement of the sorting network and the sheave is devised to reduce the sorting load of the sorting network and the sheave and improve the sorting accuracy and sorting efficiency.

According to the first aspect of the present invention, a swing sorting shelf 25 for sorting grains in the object to be processed is provided below the handling chamber 15 with the handling cylinder 20 mounted thereon, and the lower side of the swing sorting shelf 25. In addition, a first conveyor 35 for recovering the first object to be processed that has fallen from the swing sorting shelf 25 is provided, and a processing target is provided at a position above the first conveyor 35 in the swing sorting shelf 25. A sieve 27 for sorting grains and swarf in the product is provided, and a sieve 40 is provided above the sheave 27 to receive the fallen matter from the handling chamber 15 with a predetermined interval T above and below the sheave 27. It is a combine.
According to the second aspect of the present invention, an air passage 42 through which the sorting air from the tang 22 provided below the swing sorting shelf 25 passes is provided between the front portion of the sorting net 40 and the front end portion of the sheave 27. It is a combined combine.
According to a third aspect of the present invention, the predetermined vertical interval T between the sorting net 40 and the sheave 27 is equal to the front vertical interval T1 between the front portion of the sorting net 40 and the front portion of the sheave 27. However, the combine is formed wider than the rear vertical distance T2 between the rear portion of the sorting net 40 and the rear portion of the sheave 27.
According to a fourth aspect of the present invention, the mesh of the sorting net 40 is a combine formed with a coarser mesh than the mesh of the second sorting net 37 provided below the sheave 27.

In the first aspect of the invention, since the sorting screen 40 is provided above the sheave 27 with a predetermined interval T in the vertical direction, the sorting wind from the sheave 27 blows through the sorting screen 40 upward. 40 not only accepts the fallen objects from the handling chamber 15, but also sorts impurities and grains on the sorting net 40, thereby suppressing the adhesion of deposits on the sorting net 40 and sorting processing. As a result, the processing load on the sheave 27 can be reduced, and the overall sorting accuracy and sorting efficiency can be improved.
In the second aspect of the invention, the air passage 42 through which the sorting air from the tang 22 provided below the swing sorting shelf 25 passes is provided between the front portion of the sorting net 40 and the front end portion of the sheave 27. Therefore, in addition to the sorting wind blown from between the fins 28 of the sheave 27, the sorting wind from the air passage 42 can be blown through the sorting net 40, and further, the adhesion of the deposit on the sorting net 40 can be suppressed. The processing load on the sheave 27 can be reduced, and the overall sorting accuracy and sorting efficiency can be improved.
According to the third aspect of the present invention, the T between the sorting net 40 and the sheave 27 is such that the front vertical distance T1 between the front part of the sorting net 40 and the front part of the sheave 27 is the rear part of the sorting net 40. And the rear side interval T2 between the rear side portion of the sheave 27 and the rear side portion of the sheave 27, the sorting processing capability of the sorting net 40 and the front side portion of the sheave 27 can be improved. It is possible to further reduce contamination by impurities.
In the invention according to claim 4, since the mesh of the sorting net 40 is formed to be coarser than the mesh of the second sorting net 37, the clogging of the sorting net 40 is suppressed and the flying loss is reduced. Can be reduced.

The side view of a combine. The longitudinal side view of a threshing apparatus. A side view of a swing sorting shelf. The side view of the threshing apparatus which provided the layer thickness sensor. The schematic diagram which shows a selection state. The side view of a cutting processing apparatus. The front view.

An embodiment of the present invention will be described with reference to a combine drawing. Reference numeral 1 denotes a combiner body frame, 2 a traveling device provided below the fuselage frame 1, 3 a threshing device provided above the fuselage frame 1, and 4 a threshing. A mowing device 5 provided on the front side of the device 3, a grain tank 5 provided on the side of the threshing device 3, and a control unit 6 provided on the front side of the grain tank 5.
The reaping device 4 is configured by providing an auger frame (auger table) 11 provided with an auger (not shown) with a reel 12 and a cutting blade 13. The base of 14 is connected to the handling room 15 of the threshing device 3.

The reaping device 4 is configured so as to move up and down around the base side of the transport elevator 14 by a mowing upper and lower cylinders (not shown) together with the transport elevator 14.
A handling cylinder 20 is mounted on the handling chamber 15 of the threshing device 3, and the lower side of the handling cylinder 20 is surrounded by a handling net 21. A tang casing 23 of tang 22 is provided below the handling net 21 (FIG. 2).
A wind selection chamber 24 capable of wind-selecting grains and foreign matters by blowing air from the tang 22 is formed below the handling chamber 15, and in the wind selection chamber 24, in the air blowing direction (front-rear direction) of the tang 22. A swing sorting shelf 25 that swings back and forth is provided.

The configuration of the swing sorting shelf 25 is arbitrary, but as an example, the starting end portion (front end portion) of the swing sorting shelf 25 is positioned above the hot casing 23 and formed in the transfer shelf 26. Although the structure of the transfer shelf 26 is arbitrary, the upper surface of the transfer shelf 26 is not shown in the figure, but a protrusion or an unevenness is provided to drop the swing sorting shelf 25 from the handling chamber 15 on the lower side in the transfer direction. Configure to transport objects.
A sheave 27 is provided on the lower side of the transfer shelf 26 in the transfer direction. The sheave 27 is used to sort out grains and foreign matters (contaminants), and is configured by arranging a plurality of vertical fins 28 in the left-right direction in the swing direction (front-rear direction) at predetermined intervals. The fin 28 is formed in a thin plate shape, and is configured such that the inclination angle can be adjusted within a high angle range on the lower side (rear side) in the transfer direction.

A stroller 30 is provided on the lower side (rear side) of the sheave 27 in the transfer direction. A first conveyor 35 is provided below the swing sorting shelf 25, and a second conveyor 36 is provided behind the first conveyor 35. Reference numeral 37 denotes a second sorting screen (precise sorting screen) provided below the sheave 27.
A sorting screen (first sorting screen) 40 is provided above the sheave 27 with a predetermined interval T therebetween. The sorting screen 40 is formed in the same scale as the second sorting screen 37.
Therefore, the sorting net 40 receives the sawdust (cereal sawdust) of the fallen objects from the handling chamber 15, reduces the amount of the sawdust in the sorting object by the sheave 27, and improves the sorting accuracy and efficiency. be able to.

If the screening mesh 40 is formed with a finer (smaller) mesh than the second sorting mesh 37, depending on the properties of the sorting object, the sawdust (grains) of the fallen objects from the handling chamber 15 The sorting net 40 receives the soot so that the amount of soot in the material to be sorted by the sheave 27 can be reduced, and the sorting accuracy and efficiency can be improved.
When the screening mesh 40 has a coarser (larger) mesh than the second sorting mesh 37, depending on the properties of the sorting object, the amount of grains in the sorting object to be received by the sorting net 40 Can be reduced, and the occurrence of threshing loss can be suppressed.
Further, the sorting screen 40 may be formed by punching a plate member, and can be manufactured at a low cost.

The sorting net 40 is formed above the sorting wind air passage 41 that blows through the second sorting net 37 from the bottom to the top, and at least substantially the same as the front-rear width of the sorting air air passage 41.
Therefore, the sorting air blown from the bottom of the second sorting net 37 can improve the sorting process of the workpiece on the sorting net 40 and the transfer of the workpiece to the lower side in the transport direction, thereby improving the sorting efficiency. it can.
The sorting screen 40 provided above the sorting air path 41 of the second sorting screen 37 is formed in the same manner as the second sorting screen 37.
Therefore, the sorting net 40 receives the sawdust (cereal sawdust) of the fallen objects from the handling chamber 15, reduces the amount of the sawdust in the sorting object by the sheave 27, and improves the sorting accuracy and efficiency. be able to.

If the screening mesh 40 provided above the sorting air flow path 41 of the second sorting mesh 37 is formed with a coarser (larger) mesh than the second sorting mesh 37, depending on the properties of the sorting object. Can reduce the amount of grains in the sorting object to be received by the sorting net 40 and suppress the occurrence of threshing loss, and may be configured to be detachable and replaceable as appropriate.
In addition, when the sorting screen 40 provided above the sorting air flow path 41 of the second sorting screen 37 is formed with a finer (smaller) scale than the second sorting net 37, the sorting object 40 Depending on the properties, the sorting net 40 receives the swarf (grain swarf) of the fallen material from the handling chamber 15 to reduce the amount of swarf in the material to be sorted by the sheave 27, thereby improving the sorting accuracy and efficiency. Can be improved.

Further, the sorting net 40 provided above the sorting air passage 41 of the second sorting net 37 may be formed by punching a plate member, and in this way, it can be manufactured at low cost.
The sorting net 40 is formed and installed above the second sorting net 37 so as to have substantially the same front and rear width as the second sorting net 37.
Therefore, the sorting air blown from the bottom of the second sorting net 37 can improve the sorting process of the workpiece on the sorting net 40 and the transfer of the workpiece to the lower side in the transport direction, thereby improving the sorting efficiency. it can.

The sorting screen 40 having the same front and rear width as the second sorting screen 37 provided above the second sorting screen 37 has a coarser (larger) mesh than the second sorting mesh 37. Depending on the property of the object, the amount of grain in the sorting object to be processed received by the sorting net 40 can be reduced, and the occurrence of threshing loss can be suppressed, and it may be configured to be detachable and replaceable as appropriate.
The sorting screen 40 having the same front-rear width as the second sorting screen 37 provided above the second sorting screen 37 has a finer (smaller) mesh than the second sorting mesh 37, so that the sorting object 40 is selected. Depending on the properties of the material, the sorting net 40 receives the sawdust (grain waste) from the fallen material from the handling chamber 15 to reduce the amount of waste in the material to be sorted by the sheave 27, and the sorting accuracy and Efficiency can be improved.

The sorting screen 40 having the same front-rear width as the second sorting screen 37 provided above the second sorting screen 37 may be formed by punching a plate member, and can be manufactured at a low cost.
Thus, the sheave 27 is provided on the swing sorting shelf 25 above the first conveyor 35, and the sorting net 40 is provided above the sheave 27 with a predetermined interval T above and below the sheave 27. (Figure 3).
For this reason, it is possible to prevent a reduction in the sorting efficiency of the sorting net 40 and the sheave 27 while reducing the contamination of the conveyor 35 first.
An air passage 42 through which the sorting air from the tang 22 provided below the swing sorting shelf 25 passes is provided between the front portion of the sorting net 40 and the front end portion of the sheave 27 (FIG. 3).

Therefore, it is possible to improve the sorting accuracy of the workpiece that has leaked from the sorting network 40.
The configuration of the air passage 42 is arbitrary, but in this example, an opening 43 is provided in the bottom plate 25 </ b> A of the swing sorting shelf 25, and the opening 43 faces the upper air passage 44. The upper air passage 44 is formed between the upper air guide body 46 provided at the air outlet 45 of the tang casing 23 and the upper end of the air outlet 45 of the tang casing 23. 47 is a lower air guide provided below the upper air guide 46, 48 is an intermediate air passage, 49 is a lower air passage, and the intermediate air passage 48 and the lower air passage 49 are joined together to form the above-mentioned selected air air passage. 41.

Since the air passage 42 has the opening 43 of the bottom plate 25 </ b> A of the swing sorting shelf 25 facing the upper air passage 44, the sorting air from the upper air passage 44 of the tang casing 23 swings from the opening 43. It blows over the bottom plate 25A of the sorting shelf 25 and blows so that the transfer shelf 26 blows up to the starting end of the sorting net 40, thereby promoting the sorting process on the sorting net 40.
That is, since there is a bottom plate 25A of the swing sorting shelf 25 below the start end portion of the sheave 27, normal sorting air of the tang 22 does not flow, but in this application, the front portion of the sorting net 40 and the front end portion of the sheave 27 Since the air passage 42 is provided between the two, the sorting process on the sorting net 40 can be promoted.

T between the sorting net 40 and the sheave 27 is such that the front vertical distance T1 between the front part of the sorting net 40 and the front part of the sheave 27 is the rear part of the sorting net 40 and the rear part of the sheave 27. It is formed wider than the vertical interval T2 on the rear side.
Therefore, it is possible to improve the sorting processing capability in the sorting net 40 and the front portion of the sheave 27, and further reduce the contamination of the conveyor 35.

That is, the front vertical interval T1 between the front portion of the sorting net 40 and the front portion of the sheave 27 is greater than the rear vertical interval T2 between the rear portion of the sorting net 40 and the rear portion of the sheave 27. Is also widely formed, the amount of the sorting air flowing under the sorting net 40 and the front part of the sheave 27 can be increased, and the sorting process is promoted in the front part, while the sorting net 40 and the sheave 27 In the rear portion, the vertical gap T2 can be narrowed to weaken the sorting wind, and the occurrence of the outside scattering loss that causes the grains to be scattered outside the body can be suppressed.
The mesh of the sorting screen 40 is formed to be coarser (larger) than the second sorting screen 37.

As a result, clogging of the sorting net 40 can be suppressed, and external scattering loss can be reduced.
Thus, a pair of front and rear layer thickness sensors 50, 51 are provided at a predetermined position above the swing sorting shelf 25, and the layer thickness X is measured (detected) by the front layer thickness sensor 50. The layer thickness Y is measured (detected), and the calculated value obtained by dividing the difference (X−Y) by the distance D between the layer thickness sensor 50 and the layer thickness sensor 51 (FIG. 5A) It is set as the structure which carries out the threshing control based on the change gradient formed in the upper surface of the layer thickness of the to-be-processed object H deposited on this.

  That is, as shown in FIG. 5C, when the change gradient of the workpiece on the sheave 27 of the swing sorting shelf 25 is large (steep slope), the workpiece on the swing sorting shelf 25 is transferred to the lower side. In the meantime, it falls from the sheave 27, and it is assumed that the most contamination is mixed into the conveyor 35 and the sorting accuracy is lowered. On the contrary, as shown in FIG. When the change gradient of the object to be processed is small (slow), the amount of the object to be processed falling from between the sheaves 27 is small, the sheaves 27 are clogged, and the sorting load is excessive. Scattering loss is assumed, and in any case, the control can be performed so that the change gradient of the object to be processed on the swing sorting shelf 25 becomes constant as shown in FIG.

The threshing control by the layer thickness sensors 50 and 51 is performed individually or in combination with a change in the rotational speed of the tang 22, a change in the swing speed of the swing sorting shelf 25, and a change in the degree of opening of the fins 28 of the sheave 27. And execute.
For example, if the change gradient is larger than the set value, it is assumed that the amount of fall from the sheave 27 to the conveyor 35 is the largest, and the layer thickness of the workpiece on the rear portion on the swing sorting shelf 25 is thin. Control is performed so that the interval between the fins 28 of the sheave 27 is closed to a set value.
On the contrary, if the change gradient is smaller than the set value, it is assumed that the sheave 27 is clogged and the thickness of the workpiece on the rear side of the swing sorting shelf 25 is thick, and the fins 28 of the sheave 27 Control to set value by opening the interval.

In this case, when the change gradient is smaller than a predetermined set value, it is determined that the sheave 27 is clogged, and this is notified to the operator by any means.
Therefore, the continuation of the work in the poorly sorted state of the sheave 27 can be quickly stopped, and the occurrence of threshing loss can be prevented.
Further, when the change gradient is smaller than the set value, control is performed so that the interval between the fins 28 of the sheave 27 is set to the set value.
Therefore, since the filtration rate is low, the fins 28 are opened to obtain an appropriate filtration amount.
Further, when the measured value of the layer thickness sensor 51 is smaller than the set value, the threshing control is not executed.

Further, when the measured value of the layer thickness sensor 51 exceeds the set layer thickness, the vehicle speed is reduced so as to be the set layer thickness.
Accordingly, a spreader-type cutting processing device 55 for cutting straw scraps and the like is provided on the rear side of the wind selection chamber 24. The cutting processing device 55 is configured by providing a rotary blade 56 that cuts discharged waste and the like, and a cutting blade 57 that can stand and fall on the lower part of the front portion of the cutting processing device 55.
Although the configuration of the rotary blade 56 is arbitrary, in this example, the outer periphery of the cutting processing cylinder 58 is protruded in the radial direction, and the outer peripheral surface of the cutting processing cylinder 58 has a predetermined interval in the left-right direction. In order not to overlap each other, they are arranged at a predetermined angle in the circumferential direction and arranged in a staggered manner.

A conveying spiral 59 is provided on the outer peripheral surface of the cutting cylinder 58 so as to convey to the left side in the machine traveling direction.
Therefore, the cutting material or the like placed on the outer peripheral surface of the cutting cylinder 58 can be conveyed to the left side of the machine body by the conveying spiral 59, and the discharge from the cutting apparatus 55 to the field can be leveled.

(Operation of the embodiment)
Grains that have traveled by the traveling device 2 and harvested by the reaping device 4 are supplied to the handling chamber 15 and threshed by the handling cylinder 20 of the handling chamber 15.
The threshed threshing falls on the swing sorting shelf 25 from the handling net 21 and is sorted by swinging the swing sorting shelf 25 and blowing from the tang 22, and the grain is the first from the swing sorting shelf 25. The grains recovered by the conveyor 35 and firstly recovered by the conveyor 35 are stored in the Glen tank 5.

Thus, the sheave 27 is provided in the swing sorting shelf 25 above the conveyor 35, and the sorting net 40 is provided above the sheave 27 with a predetermined interval T above and below the sheave 27. In addition, it is possible to prevent a reduction in the sorting efficiency of the sorting net 40 and the sheave 27 while reducing the amount of contaminants entering the conveyor 35 first.
That is, since the sorting net 40 is provided above the sheave 27 with a predetermined interval T in the vertical direction, the sorting wind from the sheave 27 blows upward through the sorting net 40, and the sorting net 40 is removed from the handling chamber 15. In addition to catching falling objects, it is possible to sort out foreign substances and grains on the sorting net 40, thereby suppressing adhesion of deposits on the sorting net 40 and promoting the sorting process. As a result, the processing load on the sheave 27 can be reduced, and the overall sorting accuracy and sorting efficiency can be improved.

An air passage 41 through which the sorting air from the tang 22 provided below the swing sorting shelf 25 passes is provided between the front part of the sorting net 40 and the front end part of the sheave 27. The processed product is selected by receiving the sorting wind from below and the swinging sorting rack 25 swinging.
Therefore, the fallen object from the handling chamber 15 is wind-selected on the sorting net 40 before reaching the sheave 27, so that the sorting accuracy at the sheave 27 of the workpiece leaked from the sorting net 40 is improved. And the overall sorting accuracy can be improved.

  That is, since the air passage 42 through which the sorting air from the tang 22 provided below the swing sorting shelf 25 passes is provided between the front part of the sorting net 40 and the front end part of the sheave 27, In addition to the sorting wind blown from between the fins 28 of the sheave 27, the sorting wind from the air passage 42 can also be blown through. Further, the adhesion of the deposit on the sorting net 40 can be further suppressed, and the processing load of the sheave 27 can be reduced. The overall sorting accuracy and sorting efficiency can be improved.

The air passage 42 blows between the sorting net 40 and the sheave 27 through the opening 43 of the bottom plate 25 </ b> A of the swing sorting shelf 25 from the upper air passage 44 of the blower opening 45 of the tang casing 23.
T between the sorting net 40 and the sheave 27 is such that the front vertical distance T1 between the front part of the sorting net 40 and the front part of the sheave 27 is the rear part of the sorting net 40 and the rear part of the sheave 27. Is formed wider than the vertical interval T2 on the rear side between the two, the sorting processing capability in the front part of the sorting net 40 and the sheave 27 can be improved, and most of the contaminants are mixed into the conveyor 35. Can be further reduced.

Since the mesh of the sorting net 40 is formed to be coarser (larger) than that of the second sorting net 37, clogging of the sorting net 40 can be suppressed and the flying loss can be reduced.
That is, the sorting net 40 receives the sawdust (cereal sawdust) of the fallen objects from the handling chamber 15 to reduce the amount of the sawdust in the sorting object by the sheave 27 and improve the sorting accuracy and efficiency. .
When the sorting net 40 is formed with a finer (smaller) mesh than the second sorting net 37, depending on the properties of the sorting object, the scraps of the falling objects from the handling chamber 15 (grain waste) ) Can be received by the sorting net 40 to reduce the amount of swarf in the sorting object by the sheave 27 and improve the sorting accuracy and efficiency.

The sorting net 40 may be formed by punching a plate member, and can be manufactured at a low cost.
When the sorting screen 40 is formed above the sorting wind air passage 41 that blows through the second sorting screen 37 from below to at least approximately the same width as the front and rear of the sorting wind air passage 41, the second sorting screen 37 is formed. The sorting air blown from below allows the sorting of the workpieces on the sorting net 40 and the transfer of the workpieces to the lower side in the transport direction, and the sorting efficiency can be improved.

If the sorting net 40 provided above the sorting air path 41 of the second sorting net 37 is formed with the same scale as the second sorting net 37, the sorting net 40 of the fallen objects from the handling chamber 15 The sorting net 40 receives the waste (cereal waste) and reduces the amount of waste in the object to be sorted by the sheave 27, thereby improving the sorting accuracy and efficiency.
If the sorting net 40 provided above the sorting air path 41 of the second sorting net 37 has a coarser (larger) mesh than the second sorting net 37, depending on the properties of the sorting object. In addition, the amount of grain in the sorting workpiece to be received by the sorting net 40 can be reduced, the occurrence of threshing loss can be suppressed, and it may be configured to be detachable and replaceable as appropriate.

In addition, when the sorting screen 40 provided above the sorting air flow path 41 of the second sorting screen 37 is formed with a finer (smaller) scale than the second sorting net 37, the sorting object 40 Depending on the properties, the sorting net 40 receives the swarf (grain swarf) of the fallen material from the handling chamber 15 to reduce the amount of swarf in the material to be sorted by the sheave 27, thereby improving the sorting accuracy and efficiency. Can be improved.
Further, the sorting net 40 provided above the sorting air passage 41 of the second sorting net 37 may be formed by punching a plate member, and in this way, it can be manufactured at low cost.

Since the sorting screen 40 is formed above the second sorting screen 37 so as to have substantially the same front and back width as the second sorting screen 37, the sorting screen 40 blows out from below the second sorting screen 37. The sorting process of the workpiece on the sorting net 40 by the wind and the transfer of the workpiece to the lower side in the transport direction can be improved, and the sorting efficiency can be improved.
The sorting screen 40 having the same front and rear width as the second sorting screen 37 provided above the second sorting screen 37 has a coarser (larger) mesh than the second sorting mesh 37. Depending on the property of the object, the amount of grain in the sorting object to be processed received by the sorting net 40 can be reduced, and the occurrence of threshing loss can be suppressed, and it may be configured to be detachable and replaceable as appropriate.

  The sorting screen 40 having the same front-rear width as the second sorting screen 37 provided above the second sorting screen 37 has a finer (smaller) mesh than the second sorting mesh 37, so that the sorting object 40 is selected. Depending on the properties of the material, the sorting net 40 receives the sawdust (grain waste) from the fallen material from the handling chamber 15 to reduce the amount of waste in the material to be sorted by the sheave 27, and the sorting accuracy and Efficiency can be improved.

The sorting screen 40 having the same front-rear width as the second sorting screen 37 provided above the second sorting screen 37 may be formed by punching a plate member, and can be manufactured at a low cost.
Each of the above-described embodiments is illustrated or described separately or mixed for easy understanding, but these can be combined in various ways, and the expression, configuration, action, etc. It is not limited, and there are of course cases where a synergistic effect is obtained.

  DESCRIPTION OF SYMBOLS 1 ... Airframe frame, 2 ... Traveling device, 3 ... Threshing device, 4 ... Harvesting device, 5 ... Glen tank, 6 ... Control part, 15 ... Handling chamber, 20 ... Handling cylinder, 21 ... Handling net, 22 ... Kara, 23 ... Karatsu casing, 24 ... Wind selection room, 25 ... Swing sorting shelf, 26 ... Transfer shelf, 27 ... Sheave, 28 ... Fin, 30 ... Strolack, 35 ... First conveyor, 36 ... Second conveyor, 37 ... Second sorting screen, 40 ... Sorting screen, 41 ... Sorting air passage, 42 ... Air passage, 50, 51 ... Layer thickness sensor, 55 ... Cutting processing device, 56 ... Rotary blade, 57 ... Cutting blade, 58 ... Cutting processing Body, 59 ... conveying spiral.

Claims (4)

  A swing sorting shelf (25) for sorting the grains in the object to be processed is provided below the handling chamber (15) provided with the handling cylinder (20), and the bottom of the swing sorting shelf (25). Provided with a first conveyor (35) for collecting the first one of the processing objects dropped from the swing sorting shelf (25), and the first conveyor (35 in the swing sorting shelf (25)). ) Is provided with a sheave (27) for selecting grain and swarf in the object to be processed, and above the sheave (27) with a predetermined interval T above and below the sheave (27). A combine provided with a sorting net (40) for receiving falling objects from the handling room (15).   In the invention according to claim 1, the air passage (42) through which the sorting wind from the tang (22) provided below the swing sorting shelf (25) passes, the front part of the sorting net (40) and the sheave A combine provided between the front end of (27).   In the invention according to claim 1 or 2, the predetermined interval T in the vertical direction between the sorting screen (40) and the sheave (27) is the front portion of the sorting screen (40) and the sheave (27). ) In which the front vertical distance T1 between the rear part and the front part is wider than the rear vertical distance T2 between the rear part of the sorting screen (40) and the rear part of the sheave (27).   In the invention according to claim 1, claim 2, or claim 3, the mesh of the sorting screen (40) is coarser than the mesh of the second sorting screen (37) provided below the sheave (27). It is a combine that is formed to the extent that it is suitable.

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