JP2008289455A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester that smoothly discharges waste straws from the discharge opening and can decrease the amount of lost grains, by preventing the grains from scattering from the opening, when the amount of the grain culms is less. <P>SOLUTION: In the combine harvester 100 equipped with a winnowing fan 28 arranged on the lower part in front of the shake screening system 27; a straw rack 33 arranged on the rear part of the shake screening system 27; a suction fan 30 located above the straw rack; and a masking member 44 attached to the front part 43a of the lower cover of the suction fan case 35 for covering the suction fan 30. The masking member 44 is equipped with a rotating part 45 which is to set vertically turnable, and further, the grain cullm weight-detecting mean 50 is interlockingly connected to the rotating part 45 of the masking member 44; and the masking member 44 is vertically rotated to make narrow the gap D between the bottom of the masking member and the straw rack, when the amount of the grain culms is reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a tang fan that is arranged at the front and lower side of the swing sorting device and blows the sorting wind to the swing-sorted grains, and is disposed at the rear of the swing sorting device to transfer the sawdust. A stroller that discharges to the outside from the discharge port at the rear of the machine body, a suction fan that is disposed above the stroller and sucks dust out of the machine, and a lower cover of the fan case that covers the suction fan And, more particularly, a combine member provided with a shielding member that prevents scattering of the grain from the outlet, and more specifically, when the amount of cereal is reduced or when turning, the lower end of the shielding member The present invention relates to a technique for reducing the gap between the trolley rack and the Strollac.

Conventionally, an air fan that is arranged in front of and below the swing sorting device and blows the sorting wind to the swing-sorted grains, and is arranged at the rear of the swing sorting device to transfer the sawdust to the machine body A Strollac that discharges from the rear outlet to the outside of the machine, a suction fan that is arranged above the Strollac and sucks dust out of the machine, and is attached to the lower cover of the fan case that covers the suction fan The technique of a combine provided with the shielding member which prevents scattering of the grain from the said discharge port is known.
For example, Patent Document 1 includes a threshing unit, a swing selection mechanism having a chaff sheave and a stroller, a red fan, and a suction fan, and the suction fan is disposed between the suction fan and the stroller. There is disclosed a combine in which an opening that communicates the suction side and the discharge side is provided, and a blocking member that is elastically deformable around a base end portion is provided so as to block at least a part of the opening.
JP 2006-254815 A

  However, the combine disclosed in Patent Document 1 is provided with an opening that communicates the suction side and the discharge side of the suction fan between the suction fan and the Strollac and blocks at least a part of the opening. In addition, since a shielding member that can be elastically deformed is provided around the base end portion, while forming an efficient flow of the sorting wind, the grains scattered on the sorting wind are released to the outside through the opening. Although it is possible to effectively prevent discharge, the opening of the opening formed by blocking a part of the opening by the shielding member is constant, so that when the amount of cereal is small, the opening It is not possible to prevent the grain from being scattered from the opening (discharge port).

  In view of the above situation, the present invention is capable of smoothly discharging swarf from the outlet, and when the amount of cereal is small, prevents the scattering of the grain from the outlet, thereby reducing the amount of grain loss. The purpose is to provide a combine that can be reduced.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in claim 1,
A Kara fan that is arranged in front of and below the swing sorting device and blows the sorting wind to the swing sorted grain,
A stroller that is disposed at the rear of the swing sorting device and transports the sawdust to the outside of the machine through a discharge port at the rear of the machine body;
A suction fan that is disposed above the Strollac and sucks dust out of the machine;
A shielding member that is attached to a lower cover of a fan case that covers the suction fan and prevents the scattering of grains from the discharge port,
In a combine comprising
The shielding member is provided with a rotating part and is configured to be rotatable up and down, and the culm amount detecting means and the rotating part of the shielding member are linked and connected,
When the amount of cereals decreases, the shielding member is rotated up and down so that the gap between the lower end of the shielding member and the Strollac becomes small.

In claim 2,
A Kara fan that is arranged in front of and below the swing sorting device and blows the sorting wind to the swing sorted grain,
A stroller that is disposed at the rear of the swing sorting device and transports the sawdust to the outside of the machine through a discharge port at the rear of the machine body;
A suction fan that is disposed above the Strollac and sucks dust out of the machine;
A shielding member that is attached to a lower cover of a fan case that covers the suction fan and prevents the scattering of grains from the discharge port,
In a combine comprising
The shielding member includes a rotation part and is configured to be rotatable up and down, and a rotation actuator is provided in the rotation part of the shielding member, and the rotation actuator and the rotation detection unit are coupled to each other. ,
During turning, the shielding member is rotated up and down so that the gap between the lower end of the shielding member and the Strollac becomes small.

In claim 3,
The rotating part is provided at a rear part of the lower cover, and a front part of the lower cover is configured to be vertically rotatable,
The said shielding member is attached to the front part of this lower cover, and the front part of this lower cover is rotated up and down according to the amount of grains.

In claim 4,
The shielding member is an elastically deformable member.

  As effects of the present invention, the following effects can be obtained.

In claim 1,
During normal cutting, the waste is smoothly discharged from the discharge port due to the gap between the shielding member and the Strollac.
When the amount of cereal is reduced, the shielding member is rotated and the gap between the shielding member and the stroller is reduced, so that the scattering of the grain from the outlet is prevented and the grain loss amount can be reduced.

In claim 2,
During normal cutting, the waste is smoothly discharged from the discharge port due to the gap between the shielding member and the Strollac.
When the amount of cereal is reduced during turning, the shielding member is rotated and the gap between the shielding member and the strolac is reduced, so that the scattering of the grain from the outlet is prevented and the amount of grain loss is reduced. Less.

In claim 3,
The clearance between the shielding member and the Strollac can be adjusted with a simple structure in which the front part of the lower cover is pivotally supported on the rear part by utilizing an existing mechanism for the amount of cereals.

In claim 4,
Even if a large sawdust lump is discharged, the shielding member is pushed rearward, so that the discharge is smooth.

Next, the best mode for carrying out the invention will be described.
1 is a side view showing a combine according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side sectional view of a threshing portion, FIG. FIG. 5 is a side sectional view of the suction fan, FIG. 6 is a control block diagram, and FIG. 7 is a control flow diagram.

First, the whole structure of the combine 100 which concerns on one Example of this invention is demonstrated using FIG.1 and FIG.2.
In the following description, the left side in the traveling direction of the traveling machine body 1 is simply referred to as “left side”, and the right side in the same direction in the traveling direction is simply referred to as “right side”. In the present embodiment, a combination of two-row cutting is described, but a combination of three or more cuttings may be used.

  As shown in FIGS. 1 and 2, the combine 100 has a traveling machine body 1 supported by a pair of left and right traveling crawlers 2. It is mounted so that it can be adjusted up and down. On the left side of the traveling machine body 1, a threshing unit 5 for threshing and sorting the harvested cereals is arranged, and on the right side of the traveling machine body 1, a grain tank 7 for storing grains after threshing is provided. 5 and side by side. A discharge auger 8 is provided at the rear of the traveling machine body 1 so as to be able to turn, and the grains inside the grain tank 7 are discharged from the throat throw 9 of the discharge auger 8 to a truck bed or a container. . An operation unit 10 is disposed in front of the grain tank 7.

  The driving unit 10 includes a step 11 where the operator gets on, a substantially U-shaped steering handle 13 provided in the handle column 12 on the step 11, a driving seat 14 provided behind the steering handle 13, A main speed change lever 16, a sub speed change lever 17, a cutting clutch lever 18, and a cutting speed change lever 19 provided on the side column 15 on the left side of the driver seat 14 are disposed. An engine 20 serving as a power source for driving the combine 100 itself and driving a feed chain 6 described later is disposed below the driver seat 14.

  In addition, a cutting blade device (not shown) that cuts the stock of uncut grain culm in the field is disposed below the cutting frame 21 below the cutting unit 3. In front of the cutting frame 21 at the front of the cutting unit 3, two pulling devices 23 that cause uncut grain culm in the field are arranged. Between the pulling device 23 and the front end portion (feed start end side) of the feed chain 6, a culm transport device 24 that transports the culm cut by the cutting blade device to the feed chain 6 is disposed. . At the front end of the cutting frame 21 at the lower part of the pulling device 23, a weeding body 25 for weeding the uncut cereal grains in the field is projected.

  With such a configuration, the combine 100 can drive the reaping unit 3 and continuously shave the uncut cereals in the field while driving the traveling crawler 2 by the engine 20 and moving in the field.

  A waste chain 60 is disposed on the rear end side (feed end side) of the feed chain 6, and a chain guide 61 (see FIG. 4) is configured to be extendable below the waste chain 60. The waste can be switched between “cut” and “non-cut”. The waste handed over to the waste chain 60 from the rear end side of the feed chain 6 is discharged to the rear of the traveling machine body 1 with the chain guide 61 extended, or the chain guide 61 is shortened. Then, after the cutting cutter 62 disposed behind the threshing unit 5 is cut to a short length as appropriate, it is discharged to the lower rear of the traveling machine body 1.

Next, the threshing unit 5 will be described with reference to FIG.
As shown in FIG. 3, the threshing unit 5 includes a handling cylinder 26 for threshing and threshing, a handling chamber 40 in which the handling cylinder 26 is installed in the front-rear direction, and a receiver disposed around the lower side of the handling cylinder 26. And a net 22. A sorting unit is disposed below the receiving net 22, and the sorting unit swings and sorts the grains that have passed through the receiving net 22, and the front and lower side of the shaking sorting device 27. Arranged and arranged in the upper part of the rear part (Strollac 33) of the swing sorter 27, which blows the sorting wind on the grain that has been shaken and sorted, sucks the dust and discharges it outside the machine. And a suction fan 30.
Further, below the swing sorting device 27, a transport unit is disposed, and this transport unit is installed in the left-right direction behind the Kara fan 28, and conveys the grain (first thing). 36, a second conveyor 37 that is laterally arranged behind the first conveyor 36 in the left-right direction and conveys grain or the like (second product) with a branch-branch, and is connected to the right end of the first conveyor 36. There is provided a whipping cylinder 38 that conveys the product to the grain tank 7 and a reduction cylinder 39 that is connected to the right end of the second conveyor 37 and returns the second product onto the feed pan 29.

  With such a configuration, the threshing unit 5 allows the cereals conveyed from the reaping unit 3 by the cereal conveying device 24 to be inherited by the feed chain 6 and conveyed and held rearward. When the tip side is carried into the handling chamber 40, it is conveyed from the front to the back while the cereal is threshed by the rotation of the handling cylinder 26. Then, the grain that has leaked through the receiving net 22 is subjected to swing sorting by the swing sorting device 27 and wind sorting by the Kara fan 28, and falls to the first conveyor 36 or the second conveyor 37, and the first conveyor. The grain (first thing) that has fallen on 36 is conveyed to the grain tank 7 via the lifting cylinder 38, and the grain (second thing) that has fallen on the second conveyor 37 passes through the reduction cylinder 39. It is returned to the feed pan 29 and re-sorted. In addition, dust that has been picked up by the sorting air from the tang fan 28 is sucked by the suction fan 30 and discharged outside the apparatus.

Next, the swing sorting device 27 will be described with reference to FIGS.
As shown in FIG. 3, the swing sorting device 27 includes a feed pan 29 disposed at the front portion of the swing sorting device 27, a chaff sheave 31 disposed at the rear portion of the feed pan 29, and the chaff sheave. A grain sieve 32 disposed below 31 and a Strollac 33 disposed at the rear of the swing sorting device 27 are provided to swing and sort the grains that have passed through the receiving net 22.

  The feed pan 29 is disposed at the front portion of the swing sorting device 27 and sorts the grains that have leaked through the receiving net 22 into a uniform and specific gravity.

The chaff sheave 31 is disposed at the rear part of the feed pan 29, and the angle-variable recumbent chaff sheave for roughly selecting the grains and sawdust sent from the feed pan 29 and the grains and sawdust leaking through the receiving net 22 is selected. It is.
That is, the chaff sheave 31 includes a plurality of sorting plates 31a, 31a,... Arranged in the front-rear direction at a predetermined interval, and the sorting plates 31a, 31a,. ... Are changed to roughly sort the grains and sawdust sent from the feed pan 29 and the grains and sawdust leaked through the receiving net 22.

  The grain sheave 32 is disposed below the chaff sheave 31 and finely sorts the grains roughly selected by the chaff sheave 31 with the sorting wind of the tang fan 28.

  The Strollac 33 is disposed at the rear part of the swing sorting device 27, loosens the swarf, drops the grains on the second conveyor 37, performs re-sorting, and removes the swarf as a discharge port 41 (third port). ).

  As shown in FIG. 4, the sorting plate 31a of the chaff sheave 31 is connected to the chaff interlocking plate 31b at one end on the left and right sides, and the chaff sheave adjusting arm 31c connected to one end of the chaff interlocking plate 31b rotates. As a result, the chaff interlocking plate 31b is moved in the front-rear direction in conjunction with each other, the sorting plates 31a, 31a,... Are rotated, the inclination angle is changed, and the interval is changed.

  One end of a tuning wire 31d is connected to the end of the chaff sheave adjusting arm 31c, and the other end of the tuning wire 31d is connected to a cereal amount detecting means 50 (detection arm 51) described later. A spring (not shown) is connected to the end portion of the chaff sheave adjusting arm 31c, and is urged in a direction opposite to the pulling direction of the tuning wire 31d.

Next, the Kara fan 28 will be described with reference to FIGS.
As shown in FIG. 3, the tang fan 28 is disposed in front of and below the swing sorting device 27 and performs fine sorting by blowing a sorting wind on the grain roughly sorted by the chaff sheave 31.
That is, the Kara fan 28 blows the chaff sheave 31 (Glensieve 32) through the wind, etc., and the grains falling against the wind fall to the first conveyor 36, and the lighter one with a lower specific gravity is placed on the second conveyor 37. To skip. Among them, a relatively heavy object falls on the second conveyor 37, returns to the handling chamber 40 again as described above, is reduced onto the feed pan 29, and is re-sorted.

  The tang fan 28 includes a tang fan case 34 that covers the fan body, and the tang fan case 34 has a rear portion opened to form an air passage 34b for blowing selected air, and a side portion opened. A suction port 34a (see FIG. 4) for introducing air is formed.

As shown in FIG. 4, the tang fan 28 is provided with a shutter 28a for opening and closing the inlet 34a to adjust the blowing power, and the inlet 34a is set according to the amount of the culm by the culm amount detecting means 50 described later. It is opened and closed to adjust the blowing power.
The shutter 28 a is fixed to the end of the shutter shaft 28 b that is pivotally supported on the side surface of the tang fan case 34. One end of a shutter lever 28c is fixed to the end of the shutter shaft 28b, and one end of a tuning wire 28d is connected to the other end of the shutter lever 28c. The other end of the tuning wire 28d is described later. It is connected to the cereal amount detection means 50 (detection arm 51) to perform. The shutter lever 28c has a spring (not shown) connected to the other end, and is biased in a direction opposite to the pulling direction of the tuning wire 28d.

Next, the suction fan 30 will be described with reference to FIGS.
As shown in FIG. 3, the suction fan 30 is disposed above the rear portion (Strollac 33) of the swing sorting device 27, and sucks dust that has entered the sorting wind from the Kara fan 28 to the outside. This is a transverse flow fan to be discharged, and is installed in the substantially entire width (left-right direction) of the swing sorting device 27.
As shown in FIG. 4, the suction fan 30 is attached to a suction fan case 35 that covers the fan body and a lower cover 43 of the suction fan case 35, and a shielding member 44 that prevents the grain from scattering from the discharge port 41. And the culm amount detecting means 50 and the shielding member 44 are interlocked and connected via the lower cover 43 (lower cover front part 43a), and when the culm amount decreases, the lower end of the shielding member 44 and the stroller 33 The shielding member 44 is rotated up and down so that the gap between them (the gap D shown in FIG. 5) becomes small.

The suction fan case 35 includes an upper cover 42 that covers the upper part of the suction fan 30 and a lower cover 43 that also covers the lower part.
The suction fan case 35 has a suction port 35a for sucking dust at the front part, and a dust discharge port 35b for discharging dust sucked to the rear part at the front part. Dust that has entered the sorting wind from 28 is sucked from the front suction port 35a and discharged out of the machine from the rear dust discharge port 35b.

The lower cover 43 includes a lower cover front portion 43a that constitutes a front portion of the lower cover 43, and a lower cover rear portion 43b that also constitutes a rear portion.
At the front end of the lower cover rear portion 43b, a rotating portion 45 made of a pivot shaft or the like is provided, and the lower cover front portion 43a is configured to be vertically rotatable and shielded at the front end of the lower cover front portion 43a. The member 44 is attached, and the lower cover front part 43a is rotated up and down according to the amount of grain. One end of a tuning wire 43d is connected to the end of the lower cover front portion 43a, and the other end of the tuning wire 43d is connected to a grain amount detecting means 50 (detection arm 51) described later. A spring 43c (see FIG. 5) is connected to the end of the lower cover front portion 43a and is urged in a direction opposite to the pulling direction of the tuning wire 43d.

  The shielding member 44 is attached to the front end of the lower cover front portion 43a by forming a predetermined gap D (see FIG. 5) between the lower end of the shielding member 44 and the Strollac 33. The shielding member 44 is an elastically deformable member (made of rubber or the like), and even when a large waste lump is discharged from the discharge port 41, the shielding member 44 is pushed rearward and elastically deformed.

Next, the structure which concerns on the shielding member 44 which rotates up and down according to the amount of cereals is demonstrated using FIG.4 and FIG.5.
As shown in FIG. 4, the culm amount detection means 50 includes a detection rod 52, a detection plate 53, a rotation shaft 54, and a detection arm 51.
In the cereal amount detecting means 50, a rotating shaft 54 having an axial center in the left-right direction is pivotally supported by the body of the combine 100, and the end (rear end) of the detection plate 53 and the rotating shaft 54 are connected to the rotating shaft 54. One end (upper end) of the detection arm 51 is fixed. The upper surface of the detection plate 53 is in contact with the lower end of the detection rod 52 that is suspended from the lower surface of the chain guide 61. The other end (lower end) of the detection arm 51 is attached with the tuning wire 31d (connected to the chaff sheave adjusting arm 31c), 28d (connected to the shutter lever 28c), and 43d (connected to the lower cover front portion 43a).

  With such a configuration, when the amount of waste (grain meal) conveyed to the rear part of the machine body by the waste chain 60 increases, the chain guide 61 is pushed downward, and the detection plate 53 and the detection arm 51 are rotated. The tuning wires 31d and 28d attached to the other end (lower end) of the detection arm 51 are pulled backward by being rotated counterclockwise around 54, and the tuning wire 43d is pushed backward.

  When the tuning wire 31d is pulled backward in the chaff sheave 31, the chaff sheave adjusting arm 31c is rotated counterclockwise against the urging force of the spring (not shown). When the chaff sheave adjusting arm 31c is rotated counterclockwise, the chaff interlocking plate 31b is moved backward in conjunction with it. When the chaff interlocking plate 31b is moved in the backward direction, the sorting plates 31a, 31a,... Are rotated, the inclination angle is increased, and the interval is increased.

  On the other hand, when the tuning wire 28d is pulled backward, the tang fan 28 is rotated counterclockwise about the shutter shaft 28b against the urging force of the spring (not shown). . When the shutter lever 28c is rotated counterclockwise, the shutter 28a is rotated counterclockwise via the shutter shaft 28b, the opening degree of the shutter 28a is increased, and air is introduced from the suction port 34a. The amount is increased.

  Then, when the amount of waste (grain candy) conveyed to the rear of the machine body by the waste chain 60 decreases, the suction fan 30 pulls the tuning wire 43d backward, and as shown in FIG. The lower cover front portion 43a is rotated counterclockwise about the rotation portion 45 against the urging force. When the lower cover front portion 43a is rotated counterclockwise, the shielding member 44 is rotated downward, and the gap D between the lower end of the shielding member 44 and the Strollac 33 is reduced.

With such a configuration, the grains scattered by the sorting wind or the swinging of the swing sorting device 27 are bounced back against the shielding member 44 and fall from the stroller 33 to the second conveyor 37. The third loss can be reduced without being discharged outside.
On the other hand, in the suction fan 30, the distance between the outer periphery of the blade and the suction fan case 35 (suction port 35a) is increased, and the suction force is reduced. Further, in the chaff sheave 31, the inclination angle of the sorting plates 31a, 31a,... Is reduced and the interval is reduced, and in the tang fan 28, the opening of the shutter 28a is reduced and air is introduced from the suction port 34a. The amount is reduced.
On the other hand, when the amount of slag (grain mash) increases, the reverse operation increases the gap D between the lower end of the shielding member 44 and the Strollac 33, resulting in a normal spacing and clogging. To prevent.

Next, a configuration for detecting the amount of cereal and moving the shielding member 44 up and down by an actuator will be described with reference to FIGS. 6 and 7.
A rotation actuator 45 (rotation motor, cylinder, etc.) 55 is provided on the rotation portion 45 made of the pivot shaft and the like, and a detection rod 52 provided below the rejection chain 60 is disposed on the rejection rod 52. A switch 56 serving as an amount (grain amount) detecting means is provided (see FIG. 6).
As shown in FIG. 6, the switch 56 and the rotation motor 55 are connected to the controller 57, and the switch 56 indicates that the amount of evacuation decreases at the time of turning or at the end of the work, and the amount is below a predetermined amount. When detected, the rotation motor 55 is controlled to be driven, and the shielding member 44 is rotated downward via the rotation portion 45 and the lower cover front portion 43a. The installation position of the switch 56 is not limited to the detection rod 52.

  Next, a control flow of the rotation motor 55 by the controller 57 when the waste is reduced will be described with reference to FIG.

  As shown in FIG. 7, when the switch 56 detects a decrease in excretion, a detection signal is transmitted to the controller 57 (steps 1 and 6). When the detection signal is transmitted from the switch 56, the controller 57 recognizes “when the excretion is reduced” (step 7). When the controller 57 recognizes “when evacuation is reduced”, the rotation motor 55 is driven (step 8). When the rotation motor 55 is driven, the shielding member 44 is rotated downward via the rotation portion 45 (pivot shaft) and the lower cover front portion 43a (step 9), and the lower end of the shielding member 44 and the stroller 33 are moved. The gap D between the two is reduced.

  Thereafter, when the amount of waste increases from the set value, the switch 56 does not transmit a detection signal to the controller 57 (steps 1 and 2). If the controller 57 does not transmit a detection signal from the switch 56, the controller 57 recognizes that “exhaust is normal” (step 3). Driven (step 4). When the rotation motor 55 is driven, the shielding member 44 is rotated upward via the rotation portion 45 (the pivot shaft) and the lower cover front portion 43a (step 5), and the lower end of the shielding member 44 and the stroller 33 are moved. The gap D between the two is increased.

  As described above, the combine 100 is disposed at the front and lower side of the swing sorting device 27, and is disposed at the rear portion of the swing sorting device 27, and the tang fan 28 that blows the sorting wind to the swing-sorted grains. A Strollac 33 that transports the sawdust and discharges it out of the machine from the discharge port 41 at the rear of the machine body, a suction fan 30 that is disposed above the Strollack 33 and sucks dust out of the machine. In the combine 100 provided with the shielding member 44 that is attached to the lower cover front portion 43a of the suction fan case 35 that covers the suction fan 30 and prevents the scattering of the grains from the discharge port 41, the shielding member 44 is a rotating portion. 45 and is configured to be pivotable up and down, and the culm amount detecting means 50 and the pivoting part 45 of the shielding member 44 are interlocked to each other, and when the culm amount decreases, the lower end of the shielding member 44 and the straw rack 3 the shielding member 44 so that a gap D decreases between are those vertically rotated.

  With such a configuration, during normal cutting, the wastes are smoothly discharged from the discharge port 41 by the gap D between the shielding member 44 and the Strollac 33. When the amount of cereal is reduced, the shielding member 44 is rotated downward and the gap D between the shielding member 44 and the stroller 33 is reduced. The amount of loss can be reduced.

  And it is arrange | positioned in the front lower part of the rocking | swiveling sorter 27, and it arrange | positions in the rear part of the rocking | swiveling sorter 27, and the red pepper fan 28 which blows a selection wind to the grain by which rocking | pulling was sorted, A Strollac 33 that discharges to the outside from the discharge port 41 at the rear of the machine body, a suction fan 30 that is disposed above the Strollac 33 and sucks dust out of the machine, and a suction fan that covers the suction fan 30 In the combine 100 provided with the shielding member 44 that is attached to the lower cover front portion 43a of the case 35 and prevents the grain from being scattered from the discharge port 41, the shielding member 44 includes a rotating portion 45 and is rotated up and down. In addition to being configured to be movable, a rotation motor 55 is provided at the rotation portion 45 of the shielding member 44, and the rotation motor 55 and the switch 56 are interlocked to each other. 3 The shielding member 44 so that a gap D decreases between are those vertically pivoted.

  With such a configuration, during normal cutting, the wastes are smoothly discharged from the discharge port 41 by the gap D between the shielding member 44 and the Strollac 33. When the amount of cereals decreases during turning, the shielding member 44 is rotated downward and the gap D between the shielding member 44 and the stroller 33 is reduced, so that scattering of the grain from the outlet 41 is prevented. The amount of grain loss can be reduced.

  Moreover, the rotation part 45 is provided in the lower cover rear part 43b, the lower cover front part 43a is configured to be vertically rotatable, the shielding member 44 is attached to the lower cover front part 43a, and according to the amount of cereal. Since the lower cover front part 43a is pivoted up and down, the lower cover front part 43a can be rotated to the rear by using an existing linkage mechanism (such as the grain quantity detection means 50). The gap D between the shielding member 44 and the stroller 33 can be adjusted with a simple structure to be supported.

  Since the shielding member 44 is a member made of rubber or the like that can be elastically deformed, the shielding member 44 is pushed backward even when a large scrap lump is discharged. Smooth.

The side view which showed the combine which concerns on one Example of this invention. FIG. Side surface sectional drawing of a threshing part. The side view which showed the relationship between a grain amount detection means, a rocking | swiveling sorter, a tang fan, and a suction fan. Side surface sectional drawing of a suction fan. Control block diagram. Control flow diagram.

Explanation of symbols

27 Swing sorter 28 Kara fan 30 Suction fan 33 Strolack 35 Suction fan case 41 Discharge port 43 Lower cover 43a Lower cover front part 43b Lower cover rear part 44 Shielding member 45 Rotating part 50 Flour amount detecting means 55 Rotating motor 56 switches 100 combines

Claims (4)

A Kara fan that is arranged in front of and below the swing sorting device and blows the sorting wind to the swing sorted grain,
A stroller that is disposed at the rear of the swing sorting device and transports the sawdust to the outside of the machine through a discharge port at the rear of the machine body;
A suction fan that is disposed above the Strollac and sucks dust out of the machine;
A shielding member that is attached to a lower cover of a fan case that covers the suction fan and prevents the scattering of grains from the discharge port,
In a combine comprising
The shielding member is provided with a rotating part and is configured to be rotatable up and down, and the culm amount detecting means and the rotating part of the shielding member are linked and connected,
When the amount of cereals is reduced, the shielding member is rotated up and down so that the gap between the lower end of the shielding member and the Strollac is reduced.
Combine that is characterized by that. A Kara fan that is arranged in front of and below the swing sorting device and blows the sorting wind to the swing sorted grain,
A stroller that is disposed at the rear of the swing sorting device and transports the sawdust to the outside of the machine through a discharge port at the rear of the machine body;
A suction fan that is disposed above the Strollac and sucks dust out of the machine;
A shielding member that is attached to a lower cover of a fan case that covers the suction fan and prevents the scattering of grains from the discharge port,
In a combine comprising
The shielding member includes a rotation part and is configured to be rotatable up and down. A rotation actuator is provided in the rotation part of the shielding member, and the rotation actuator and the rotation detection unit are interlocked and connected. ,
When turning, the shielding member is rotated up and down so that a gap between the lower end of the shielding member and the Strollac becomes small.
Combine that is characterized by that. The rotating part is provided at a rear part of the lower cover, and a front part of the lower cover is configured to be vertically rotatable,
The shielding member is attached to the front portion of the lower cover, and the front portion of the lower cover is rotated up and down according to the amount of cereal.
The combine according to claim 1 or 2, characterized in that. The shielding member is an elastically deformable member,
The combine according to any one of claims 1 to 3, characterized in that: