JP2018099070A - Waste straw processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a risk of dust mixed in the sorting wind from a threshing device to fall on a driving motor for driving an opening/closing cover of a waste straw cutting device and a linkage mechanism from the driving motor to the opening/closing cover.SOLUTION: A waste straw processing device includes a waste straw cutting device 5, a waste straw conveying device, and a top cover 43 for covering the upper side of the waste straw cutting device 5 and the waste straw conveying device. An opening/closing cover 52 of the waste straw cutting device 5 is configured to be switchable in posture between a standing posture a1 capable of accepting waste straw being dropped and supplied from the waste straw conveying device and a closing posture a2 for making the waste straw being dropped and supplied from the waste straw conveying device flow down and discharged to a machine body rear side. A vent hole 46 for passing the sorting wind of a fan mill in the threshing device side to the outside is formed in the top cover 43.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a waste straw cutting device provided on the rear side of a threshing device, and a waste straw processing device including a waste straw conveying device that supplies the waste straw to the waste straw cutting device.

  As this kind of waste straw processing apparatus, what is equipped with the waste straw conveying apparatus which conveys backward the waste straw after threshing processing and supplies it to the waste straw cutting apparatus is known (see Patent Document 1). .

Japanese Patent Laying-Open No. 2010-81843 (see paragraphs “0026” and “0027” and FIGS. 4 and 6)

In the waste straw processing apparatus described in Patent Document 1, the waste straw cutting apparatus includes an opening / closing cover configured to introduce the waste straw into a shredded position in a standing posture and to flow the waste straw backward in a lying posture. ing. And the range from the upper side to the back side is covered with the upper cover, and the discharge path of the discharge wall transporter is ensured.
In the waste straw processing apparatus having such a structure, during the shredding operation of the waste straw, the opening / closing cover is erected to open the waste straw cutting device inlet of the waste straw cutting apparatus, and in the long straw discharge work, the opening / closing cover is laid down. The exhaust outlet is closed.
Accordingly, dust such as straw scraps mixed in the flow of the sorting wind on the threshing device side is prevented from flowing backward by the standing open / close cover during shredding operation of the waste straw, and particularly on the tip side of the waste straw cutting device. There is a tendency to flow sideways.
For this reason, the dust mixed in the sorting wind leaking to the side of the waste wall cutting device accumulates in the vicinity of the drive motor of the open / close cover provided on the side of the waste wall cutting device. There is room for improvement in that there is a possibility of adversely affecting the operation of the driving motor and the linkage mechanism from the driving motor to the opening / closing cover.

  The present invention seeks to reduce the risk of dust mixed in the sorting air from the threshing device falling on the drive motor that drives the open / close cover of the waste wall cutting device and the linkage mechanism from the drive motor to the open / close cover. Is.

  The features of the waste straw processing apparatus according to the present invention are characterized in that the waste straw cutting device provided at the rear part of the threshing device, the waste straw conveying device that transports the waste straw after the threshing processing to the waste straw cutting device side, and the waste straw And a top cover that covers the upper side of the cutting apparatus and the waste straw transporting apparatus, and swings with the horizontal center axis in the left-right direction at the rear end side portion of the discharging wall cutting apparatus as a swing fulcrum. An openable / closable opening / closing cover is provided, and the openable / closable cover has an upright posture capable of receiving a waste blower dropped and supplied from the waste blower transfer device, and a waste blower dropped and supplied from the waste blower transfer device. It is configured so that the posture can be switched between a closed posture for flowing down and discharged to the side, and a ventilation port is formed in the upper cover to draw out the selection air for tang at the threshing device side.

According to the present invention, in the front-rear direction in which the tangled rice sorting air flows on the threshing device side, the upper cover is formed with a ventilation port for extracting the sorting air to the outside, so that the open / close cover can receive the exhaust straw and Even in the shredded working state, those near the top cover side of the Kara's sorting wind can escape from the vent to the rear side.
Therefore, it is possible to reduce the degree to which the Kara sorting wind flows out to the side of the waste straw cutting device in the shredding operation state in which the opening / closing cover is in a standing posture, and the dust mixed in the sorting wind is opened and closed. There is an advantage that it is possible to reduce the possibility of falling down to a location where the cover drive motor and the linkage mechanism from the drive motor to the open / close cover are present.

  In the present invention, it is preferable that a duct for guiding the Kara sorting air to the rear of the machine body is attached to the ventilation opening.

  According to the present invention, the presence of a duct for guiding the sorting air of Karatsu to the rear of the fuselage directs the flow of wind containing dust blown out from the ventilation port, while restricting diffusion to the lateral side etc. It is possible to guide to the rear farm field.

  In the present invention, it is preferable that the vent hole is formed on the upper surface of the upper cover.

According to the present invention, since the ventilation opening is formed on the upper surface of the upper cover, the sorting air is discharged from a position where relatively large dust is difficult to reach among the dust contained in the sorting air. For this reason, the dust contained in the wind including the dust blown out from the air vent is relatively small and inconspicuous, and is easily scattered backward, and the amount thereof is also relatively small.
Therefore, compared with the case where the position of the ventilation opening is below, even if the amount of air discharged is not changed, the size of the dust contained in the discharged air is relatively small and the amount is relatively small.

  In the present invention, it is preferable that an exhaust fan is provided inside the duct.

  According to the present invention, the exhaust fan provided in the duct can efficiently exhaust the wind containing dust blown out from the ventilation port, and the tangled sorting wind is further laterally removed from the side of the exhaust wall cutting device. The degree of flowing out toward can be reduced.

  In the present invention, it is preferable that power is transmitted to the exhaust fan from a power transmission system that transmits driving force to the barrel of the threshing device.

  According to the present invention, the power is transmitted from the power transmission system that transmits the driving force to the barrel of the threshing device, so that the power transmission system on the threshing device side is effectively used to simplify the structure. In addition to being easy to operate, it is easy to perform a synchronized operation with respect to the driving state of the handling cylinder, so that it is easy to obtain a structure with little power loss.

  In the present invention, it is preferable that the vent hole is formed over both left and right end portions of the upper cover.

  According to the present invention, by adopting the wide ventilation openings formed across the left and right end portions of the upper cover, it becomes even easier for the parts near the upper cover side to come out to the rear side among the selection air of the Kara.

It is a side view which shows the whole combine. It is a top view which shows the whole combine. It is a vertical side view which shows a threshing apparatus. It is a rear view of the state which open | released the rear wall part side in the waste-paper processing apparatus. It is explanatory drawing in the cross section in the VV line location of FIG. It is a right view of the state which notched the motor cover in a waste-paper processing apparatus. It is sectional drawing which shows the upper cover of the waste straw processing apparatus in another embodiment.

Hereinafter, an example of an embodiment of the present invention will be described based on the drawings.
In the description of the present embodiment, the front-rear direction and the left-right direction are described as follows unless otherwise specified. That is, the forward traveling direction (see arrow F in FIG. 1) of the self-removable combine to which the present invention is applied is “front”, and the backward traveling direction (see arrow B in FIG. 1) is “ The direction corresponding to the right side (see arrow R in FIG. 2) with respect to the forward posture in the front-rear direction is “right”, and the direction corresponding to the left side (see arrow L in FIG. 2) is also “left”. Is.

[Overall structure of the combine]
FIG. 1 is a side view showing a self-removing combine to which a waste straw processing apparatus 4 according to the present invention is applied, and FIG. 2 is a plan view thereof.
As shown in FIGS. 1 and 2, the fuselage frame 10 is mounted on a pair of left and right crawler type traveling devices 11 in the combine. On the body frame 10, there are provided a driving unit 12 equipped with a driver's seat and a control tower in the cabin, and a driving unit 14 in which an engine 13 is positioned below the driving unit 12. When the driving force of the engine 13 is transmitted to the crawler type traveling device 11, the traveling machine body 1 capable of self-propelling is configured.
Further, a cutting pretreatment device 2 is connected to the front portion of the machine frame 10, and a threshing device 3 and a glen tank 15 are provided on the machine frame 10 on the rear side of the prime mover 14, and the threshing is performed. A waste straw treatment device 4 is provided at the rear of the device 3 to constitute a combine for harvesting rice, wheat and the like.

The pre-cutting processing device 2 swings up and down with respect to the body frame 10 by the expansion and contraction operation of the lift cylinder 17 provided across the preprocessing unit frame 20 that supports the cutting blade 21 and the pulling device 22 and the body frame 10. It is configured to be movable.
When the lift cylinder 17 is contracted to move the traveling machine body 1 with the pre-cutting processing device 2 in the descending work state, the pre-cutting processing device 2 raises the planted culm to be cut and causes the device 22 to perform the processing. On the other hand, the clipper blade 21 is used for cutting, and the harvested cereals are transported toward the rear of the machine and supplied to the threshing feed chain 33 of the threshing device 3. When the lifting cylinder 17 is extended and the pre-cutting processing device 2 is lifted, the cutting blade 21 and the pulling device 22 are in a lifted non-working state in which they are raised from the ground.

The threshing device 3 includes a handling barrel 31 that rotates in a threshing case 30 that constitutes a handling chamber, and a swing sorting device 32 that swings and performs specific gravity sorting. A threshing feed chain 33 for holding and transporting the original side is provided.
The tip side of the harvested cereal rice cake that is nipped and conveyed by the threshing feed chain 33 is threshed in the threshing case 30, and the threshing grains to be collected are processed by the oscillating sorting device 32 among the threshed products. After being sorted and supplied to the Glen tank 15, it is taken out from the discharge auger 16 outside the machine. Other dust such as straw scraps is discharged out of the machine from the end of the threshing device 3.

The harvested cereal meal that is nipped and conveyed by the threshing feed chain 33 is supplied from the conveyance end of the threshing feed chain 33 to the waste straw processing apparatus 4 after the threshing process. In the waste straw processing apparatus 4, the waste straw inherited from the conveyance end of the threshing feed chain 33 is conveyed obliquely rearward to the right, and is dropped and supplied from the conveyance termination to the lower waste straw cutting apparatus 5.
In the waste blower cutting device 5, the processing form is changed to either the state in which the supplied waste straw is shredded and dropped downward or released from the rear without being shredded. Can be released.

[Structure of threshing device]
FIG. 3 is a longitudinal side view showing the threshing apparatus 3. As shown in this figure, the threshing device 3 includes a threshing unit 3A having a handling drum 31 at the upper part in the threshing case 30, and a sorting part 3B having a swinging sorting device 32 at the lower part in the threshing case 30. I have.

  In the threshing unit 3 </ b> A, the stocker side of the harvested cereal meal supplied from the pre-cutting processing device 2 is sandwiched by the threshing feed chain 33, and the threshing process is performed while being conveyed toward the rear of the threshing case 30. The tip side of the harvested cereal culm that is nipped and conveyed is threshed by a handling cylinder 31 and a receiving net 34 that rotate in the threshing case 30, and the threshing grains fall through the receiving net 34 and the threshing-treated waste straw is Subsequently, it is conveyed to the conveyance end side of the threshing feed chain 33.

  In the sorting unit 3B, a processed product such as threshing grains dropped from the receiving net 34 is received by the swing sorting device 32 to perform a sorting process. By the specific gravity sorting by the rocking operation of the rocking sorting device 32 and the wind sorting action with the sorting wind supplied backward from the Kara 35, the screen is sorted into threshing grains and dust. In the sorting unit 3B, the first processed material processed by the swing sorting device 32 is dropped to a position where it can be recovered by the first screw conveyor 36, and the second processed material is dropped to a position where it can be recovered by the second screw conveyor 37. Let

  Dust generated in the sorting unit 3B is threshed from the dust outlet 30a provided at the rear of the threshing case 30 by the swinging operation of the swing sorting device 32, the blow of the red pepper 35, and the suction and discharge of the dust exhaust fan 38. 30 is discharged to the rear side. In other words, the wind supplied from the Kara 35 is used as the sorting wind for the wind sorting action in the sorting unit 3B, and is then discharged from the carry-out outlet 30b for discharging the dumper provided in the upper rear part of the threshing case 30. It is sent to the rear side where the processing device 4 exists.

[Waste waste treatment equipment]
On the rear side of the threshing device 3, a waste straw processing device 4 is provided.
As shown in FIGS. 3 and 5, the waste straw processing device 4 includes a waste straw transporting device 40 that feeds the waste straw inherited from the threshing feed chain 33 toward the rear waste straw cutting device 5, A straw cutting device 5 and an upper cover 43 covering the upper side of the waste straw conveying device 40 and the waste straw cutting device 5 are provided.

[Discharger transport device]
The waste wall conveying device 40 includes an endless rotating conveying chain 41 and a holding conveying rail 42 positioned along the lower side of the endless rotating conveying chain 41. As shown in FIGS. 2 and 3, the waste straw conveying device 40 is disposed from the conveying terminal portion of the threshing feed chain 33 to the lower space of the upper cover 43 positioned on the rear side of the threshing case 30.
That is, the waste straw conveying device 40 is disposed in a state where the front half portion has entered the inside of the threshing case 30, and the conveyance start end side is located in the vicinity of the lateral side of the conveyance end portion of the threshing feed chain 33. The latter half of the waste straw conveying device 40 extends further to the rear side through a carry-out port 30b formed in the upper part of the rear end portion of the threshing case 30, and the conveying terminal portion is the upper cover 43 of the waste straw processing device 4. It is located above the waste straw cutting device 5 in the lower space.

The above-described waste straw transporting device 40 inherits the waste straw from the transport end portion of the threshing feed chain 33, and sandwiches and transports the waste straw to the rear waste straw processing device 4 side through the outlet 30b for carrying out the waste straw.
In this waste straw transporting device 40, the stocker side of the threshing waste straw inherited from the transport end of the threshing feed chain 33 is sandwiched between the endless rotating transport chain 41 and the sandwiching transport rail 42, as shown in FIG. It is conveyed rearward and diagonally right so that the entire length in the body direction is drawn into the waste straw treatment device 4 and dropped and supplied to the lower waste straw cutting device 5 from the end of the transportation.

[Drainer cutting device]
As shown in FIGS. 3 to 5, the waste straw cutting device 5 includes a cutter case 50 connected to the rear part of the machine body of the threshing device 3, and a drive cutter unit 6 </ b> A and a receiving blade cutter unit inside the cutter case 50. 6B is rotatably provided.
The drive cutter unit 6 </ b> A includes a cutting drive shaft 60 to which a driving force is transmitted, and a number of cutting blades 60 a attached to the cutting drive shaft 60. The receiving blade cutter unit 6 </ b> B includes a receiving blade rotating shaft 61 arranged in parallel with the cutting drive shaft 60 and a large number of receiving blades 61 a attached to the receiving blade rotating shaft 61.
The cutting drive shaft 60 and the receiving blade rotating shaft 61 set the distance between the axes so that a part of the cutting blade 60a and a part of the receiving blade 61a are partially overlapped in a side view. Are arranged side by side.

The shaft end portions on both the left and right sides of the cutting drive shaft 60 are supported by shaft support members 62 and 62 having ball bearings or the like. The shaft support members 62 and 62 are detachably connected and fixed to the right side wall portion 50R and the left side wall portion 50L of the cutter case 50 by connecting bolts (not shown).
By supporting the left and right shaft support members 62, 62, the both ends of the cutting drive shaft 60 are supported in a state of being spanned across the right side wall portion 50R and the left side wall portion 50L of the cutter case 50.
The left and right shaft ends of the receiving blade rotating shaft 61 are also supported by a shaft support member (not shown) provided with a ball bearing or the like. The blade rotating shaft 61 is supported via the shaft support members at both ends in a state of being spanned between the right side wall portion 50R and the left side wall portion 50L of the cutter case 50.

In addition to the left and right side wall portions 50L and 50R, the cutter case 50 includes a front wall portion 50F that is connected to the front side of the left and right side wall portions 50L and 50R. Then, rear portions of the left and right side wall portions 50L and 50R are configured to be able to swing open and close around a lower swing axis x1 along the horizontal direction at a position corresponding to the lower end side of the cutter case 50. A cover member 51 (corresponding to the rear wall portion) is provided.
In addition, on the upper side of the left and right side wall portions 50L and 50R, a standing posture a1 that can receive the waste straw supplied from the waste straw transporting device 40 and a waste straw supplied from the waste straw transporting device 40 are provided. An opening / closing cover 52 configured to be switchable between a closing posture a2 for flowing down and discharging to the rear side is provided.

The open / close cover 52 is configured to be able to swing open and close around a horizontal upper swing axis x2 (corresponding to a lateral axis) across the upper portions of the left and right side wall portions 50L and 50R at the rear position of the cutter case 50. Has been.
The left and right side wall portions 50L, 50R are formed with inclined edges that are rearwardly lowered, and the opening / closing cover 52 is formed at the closed posture a2 at the rearwardly lowered inclined edges of the left and right side wall portions 50L, 50R. It becomes the back tilt posture along.
Therefore, in the closed posture a <b> 2 in which the opening / closing cover 52 closes the upper side of the cutter case 50, the waste straw supplied and dropped from the conveyance end of the waste straw transport device 40 is not supplied to the waste straw cutting device 5, It is guided to flow backward along the inclination of the upper surface of 52.

In the standing posture a1 in which the open / close cover 52 opens the upper side of the cutter case 50, the waste straw dropped and supplied from the conveyance end of the waste straw transport device 40 is supplied to the waste straw cutting device 5, and is connected to the drive cutter unit 6A and the receiving cutter 6A. The blade cutter unit 6B is shredded and discharged to the farm field below.
A skirt member 53 for drop guide is provided below the lower end edge of the cutter case 50 so as to suppress scattering of the shredded waste straw.

As shown in FIG. 7, a swing arm 54 a is connected to the support shaft 54 of the opening / closing cover 52, and this swing arm 54 a is connected via a linkage mechanism 55 including a link member and a sect gear. , And is connected to a drive motor 56 serving as a power source. The upper portions of the drive motor 56 and the linkage mechanism 55 are covered from the outside with a motor cover 58 as shown in FIGS.
A control device (not shown) for controlling the operation of the drive motor 56 is provided in the operation unit 12, and the drive motor 56 changes the posture of the opening / closing cover 52 in response to an operation command from the control device. It is configured as follows.

  In this embodiment, the opening / closing cover 52 has an upright position a1 that opens the upper side of the cutter case 50, as shown by a solid line in FIGS. There are three forms: a closed posture a2 that closes the upper side, and an intermediate posture a3 that is positioned in the middle. Therefore, as the operation command to any one of the above three forms is output from the control device, the drive motor 56 is operated, and the switching operation is performed so that the position of the opening / closing cover 52 becomes the commanded position. Is done.

  When the intermediate posture a3 is selected from the postures of the opening / closing cover 52, when the amount of waste straw supplied from the waste straw transporting device 40 is small, cutting by the drive cutter unit 6A and the receiving blade cutter unit 6B is started. It becomes easy to guide the waste straw centrally. In addition, when the cutting target is relatively light, such as wheat, it is easy to suppress the waste straw from escaping from the cutting portion.

As shown in FIGS. 5 to 6, notched groove portions 57 </ b> L and 57 </ b> R are formed in the left and right side wall portions 50 </ b> L and 50 </ b> R of the cutter case 50 along the side wall surfaces of the respective side wall portions 50 </ b> L and 50 </ b> R. The cutout groove portions 57L and 57R are formed from the shaft support portion of the cutting drive shaft 60 by the shaft support member 62 to the rear edge of the side wall surface of the side wall portions 50L and 50R on the left and right sides of the cutter case 50.
The vertical widths of the cutout groove portions 57L and 57R are formed to be slightly larger than the shaft diameter of the cutting drive shaft 60, and in a state where the connection of the shaft support members 62 and 62 to the side wall portions 50L and 50R is released, The cutting drive shaft 60 is configured to be slidable along the groove length direction in the cutout groove portions 57L and 57R.

The notch grooves 57L and 57R are open to the rear side at the edges of the side wall surfaces of the left and right side wall portions 50L and 50R, and have a structure having end openings. The rear cover member 51 described above is provided on the rear side in the extending direction of the cutout groove portions 57L and 57R so that the end openings of the cutout groove portions 57L and 57R can be closed. .
As described above, the rear cover member 51 is configured to be able to swing open and close around the lower swing axis x1. Therefore, as shown in FIG. 6, by setting the rear cover member 51 upright above the lower swing axis x1, the rear cover member 51 intersects with the extending direction of the notch grooves 57L and 57R. The end openings of the notch grooves 57L and 57R are closed along the line.
By turning the rear cover member 51 rearward around the lower swing axis x1 to a hanging position as shown in FIG. 5, the end openings of the notch grooves 57L and 57R are opened, The cutting drive shaft 60 can be detached from the rear side.

[Upper cover]
As shown in FIGS. 3 to 6, the upper cover 43 includes an upper surface plate 44 extended from the rear end portion of the ceiling wall 30 </ b> A of the threshing case 30 to the rear side along the ceiling wall 30 </ b> A, and a waste wall conveying device. A rear plate 45 that shields the waste straw conveying device 40 from the rear side at a position behind the rear end of 40.

  The lower end of the rear plate 45 is located below the extended line of the nipping and conveying surface where the endless rotation conveying chain 41 and the nipping and conveying rail 42 face each other. As shown by the solid line in FIG. 5, when the opening / closing cover 52 of the drainer cutting device 5 is in the standing posture a <b> 1, the upper part of the opening / closing cover 52 is located above the lower end of the rear plate 45. That is, the lower end portion of the rear plate 45 and the upper portion of the open / close cover 52 in the standing posture a1 overlap in the vertical direction.

As a result, the sorting wind that is supplied from the tang 35 and flows backward beyond the carry-out port 30b is impeded from flowing backward at the location where the open / close cover 52 and the rear plate 45 are in the standing posture a1. It will be.
However, the upper cover 43 is formed with a ventilation port 46 in the upper surface plate 44 portion for extracting the sorting air from the tang 35 to the outside. Therefore, it is possible to discharge the sorting air, which has been hindered from flowing backward at the overlapping portion of the opening / closing cover 52 and the rear plate 45, to the outside through the ventilation port 46. Accordingly, it is possible to reduce the degree to which much of the sorting air in the internal space of the upper cover 43 leaks to a place where the motor cover 58 and the like present on the lateral side portion of the exhaust wall cutting device 5 are present.

As shown in FIG. 2, the ventilation opening 46 is formed in a rectangular shape that is longer in the left-right direction than in the front-rear direction in plan view, and is provided within the range of the extended portion of the threshing case 30. A duct 47 is provided on the upper surface plate 44 where the air vent 46 exists, and has a rearwardly inclined surface 47a and left and right side surfaces 47b and opens rearward so as to guide the sorting air of the Kara 35 to the rear of the machine body. Is attached.
By providing the duct 47 in this way, the direction of the sorting air discharged from the ventilation port 46 is directed to the rear side to some extent, and the dust contained in the sorting wind is diffused in the left-right direction and the upper side. Restricted.

[Another embodiment]
(1) In the above-described embodiment, the structure in which the duct 47 is attached to the upper side of the ventilation port 46 is illustrated. However, even if only the ventilation port 46 is provided without using such a duct 47, Good. Further, in this case, a slope or a step is provided between the portion of the upper surface plate 44 where the vent hole 46 exists and the rear portion of the vent hole 46 so that the rear portion is lowered. Thus, the vent 46 may be formed to open backward.
Other configurations may be the same as those in the above-described embodiment.

(2) In the above-described embodiment, the structure in which the width in the left-right direction of the vent hole 46 is set to about half of the width in the left-right direction of the threshing case 30 is illustrated, but is not limited to this structure. For example, although not shown, the lateral width of the ventilation port 46 can be provided over an appropriate range such as a range extending to the left and right ends of the upper cover 43.
Other configurations may be the same as those in the above-described embodiment.

(3) In the above-described embodiment, the structure in which only the duct 47 is attached on the upper side of the vent hole 46 is illustrated, but the present invention is not limited to this structure.
For example, as shown in FIG. 7, an exhaust fan 48 constituted by a cross flow fan or the like may be provided in the duct 47. The exhaust fan 48 is driven by an electric motor 49 provided at a lateral side position of the duct 47 and operates so as to suck out sorting air existing in the lower space of the upper cover 43.
The electric motor 49 can be driven by an operation switch (not shown) or the like provided in the operation unit 12 or by a detection sensor (not shown) for the amount of workpiece provided in the threshing device 3. It may be configured to operate when the amount of processing is large based on the sensing result.
Other configurations may be the same as those in the above-described embodiment.

(4) As described above, when the exhaust fan 48 is provided in the duct 47 provided on the upper side of the ventilation port 46, the power source of the exhaust fan 48 is not limited to the one using the electric motor 49 described above. .
For example, although not shown, rotational power to the exhaust fan 48 may be transmitted from a power transmission system that transmits driving force to the barrel 31 of the threshing apparatus 3 via a belt transmission mechanism or the like.
Other configurations may be the same as those in the above-described embodiment.

(5) In the above-described embodiment, the structure in which the ventilation hole 46 is formed on the upper surface plate 44 is exemplified. However, the present invention is not limited thereto, and for example, the ventilation hole 46 is formed on the rear surface plate 45 side. Also good.
Other configurations may be the same as those in the above-described embodiment.

(6) In the above-described embodiment, the structure in which the lower end portion of the rear plate 45 and the upper portion of the open / close cover 52 in the standing posture a1 overlap in the vertical direction is illustrated, but the present invention is not limited to this. . For example, there may be a state in which a slight gap exists in the vertical direction between the lower end portion of the rear plate 45 and the upper portion of the open / close cover 52 in the standing posture a1.
Also in this case, the flow of the sorting wind from the lower space of the upper cover 43 to the rear side is inhibited as compared with the case where the opening / closing cover 52 is in the closed posture a2. By discharging the selection air from the space to the outside through the ventilation openings 46, the degree of leakage of most of the selection air to the location where the motor cover 58 and the like existing on the lateral side of the discharge wall cutting device 5 is present. Can be reduced.
Other configurations may be the same as those in the above-described embodiment.

  INDUSTRIAL APPLICABILITY The present invention can be used not only for a self-removing combine waste straw processing apparatus but also for a waste straw processing apparatus connected to a stationary threshing apparatus.

DESCRIPTION OF SYMBOLS 3 Threshing apparatus 5 Drainer cutting apparatus 35 Dwarf rice 40 Drainer conveying apparatus 43 Upper cover 46 Ventilation opening 47 Duct 48 Exhaust fan 52 Opening and closing cover a1 Standing attitude a2 Closed attitude

Claims (6)

A waste straw cutting device provided at the rear of the threshing device;
A waste straw conveying device that conveys the waste straw after the threshing process to the waste straw cutting device side;
An upper cover that covers an upper side of the waste straw cutting device and the waste straw conveying device;
The drainer cutting device is provided with an opening / closing cover that can swing open / close with a horizontal axis in the left-right direction at the rear end side portion of the drainer cutting device as a swing fulcrum,
The open / close cover has a standing posture capable of accepting a waste straw supplied and dropped from the waste straw transporting device, and a closed posture for discharging the waste straw dropped and supplied from the waste straw transporting device to the rear side of the fuselage. It is configured to switch posture,
A draining apparatus for a threshing machine, wherein the upper cover is formed with a vent hole for drawing out the sorting wind of tang on the threshing apparatus side.   The exhausting apparatus for a threshing machine according to claim 1, wherein a duct that guides the sorting air of the red pepper to the rear of the machine body is attached to the ventilation opening.   The draining apparatus for a threshing machine according to claim 1 or 2, wherein the ventilation hole is formed on an upper surface of the upper cover.   The waste water treatment apparatus for a threshing machine according to claim 2, wherein an exhaust fan is provided inside the duct.   5. The apparatus according to claim 4, wherein power is transmitted to the exhaust fan from a power transmission system that transmits driving force to a barrel of the threshing apparatus.   The waste ventilator for a threshing machine according to any one of claims 1 to 5, wherein the ventilation port is formed across the left and right ends of the upper cover.

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