JP2004016200A - Threshing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem such that in especially a multiple rows-reaping type combine, sometimes a large amount of threshed grains are conveyed into a selecting device at the same time, and in such case, the selection treatment can not be sufficiently performed. <P>SOLUTION: This threshing device consisting of a threshing part 12 and a selecting part 17 is provided by installing a feed pan 30 for receiving the treated materials leaking down from a receiving net 20 of the threshing part 12, a chaff sieve 33 which is a coarse selecting part for selecting the treated materials from the feed pan 30, and a grain sieve 32 which is a fine selecting part for further selecting the treated materials leaking down from the coarse selecting part at the selecting part 17, and also arranging a fanning mill 26 for sending selection wind into the shaking main body 49 in the lower direction of the feed pan 30, installing a sieving device 54 in the lower direction of the receiving net 20 and between the feed pan 30 and the chaff sieve 33, and a sieving device 53 in the rear lower direction of a threshing drum 21 and on an extended line and in a rear direction of the receiving net 20, and further making these sieving devices 53, 54 shake by receiving the shake of the shaking main body 49. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a combine threshing apparatus.
[0002]
[Prior art]
Conventionally, in a swinging body of a sorting unit such as a combine, a front portion of the swinging body is pivotally supported so as to be swingable, and a rear portion of the swinging body is connected to a swing drive shaft such as a crankshaft or an eccentric shaft. By driving the rocking drive shaft, the rocking main body is rocked in the front-back direction, and “rocking sorting” is performed while sending chaff, straw chips and the like backward. At the same time, `` wind selection '' is performed by sending the sorting wind from the Karamin placed below the swinging body to the inside and below the swinging body, and further, the rough sorting section such as chaff sheave In the sorting section such as Glen Sieve, "through sorting" is performed to sort into the first thing, the second thing, straw waste, etc.
I have.
[0003]
[Problems to be solved by the invention]
However, in a multi-row combine, a large amount of shedding may be conveyed to the sorting device at one time, and in this case, the sorting process cannot be performed sufficiently.
[0004]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0005]
That is, in claim 1, a threshing device comprising a threshing unit and a sorting unit, wherein a feed pan which receives the processed material leaking from a receiving net of the threshing unit and transports the processed material backward, and a processed product from the feed pan A coarse sorting unit for sorting the raw material, and a fine sorting unit for further sorting the processed material leaking from the rough sorting unit are provided in the sorting unit, and a Karamin for blowing the sorting wind is arranged below the feed pan, and a suction fan is provided. In the arrangement arranged at the rear of the sorting section, a sieving device is provided below the receiving net of the threshing section and between the feed pan and the coarse sorting section.
[0006]
In claim 2, in the threshing device according to claim 1, a sieving device is provided below the threshing unit after the handling cylinder and on the extension of the receiving net of the threshing unit, and two sieving devices are provided before and after. It is provided.
[0007]
The threshing apparatus according to claim 3, comprising a threshing unit and a sorting unit, wherein the feed pan receives the processed material leaking from the receiving net of the threshing unit and transports the processed material backward, and sorts the processed material from the feed pan. A coarse separation unit for performing the separation and a fine selection unit for further separating the processed material leaking from the rough selection unit are provided in the selection unit, and a Karamin for blowing the selection air is disposed below the feed pan, and the suction fan is disposed in the selection unit. In the rear part, a plurality of sieving devices are disposed in the air path from the Karamin to the suction fan for the sorting wind blown upward from the rough sorting part.
[0008]
5. A threshing apparatus according to claim 4, comprising a threshing unit and a sorting unit, wherein the feed pan receives the processed material leaking from a receiving net of the threshing unit and transfers the processed material backward, and sorts the processed material from the feed pan. A coarse separation unit for performing the separation and a fine selection unit for further separating the processed material leaking from the rough selection unit are provided in the selection unit, and a Karamin for blowing the selection air is disposed below the feed pan, and the suction fan is disposed in the selection unit. In the rear part, a movable wind direction plate is provided in front of the rough sorting part to separate the air from Karino into upper and lower parts of the rough sorting part.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the invention will be described.
FIG. 1 is an overall side view of a combine equipped with a threshing apparatus according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a partial side sectional view of the threshing apparatus.
4 is a rear view of the threshing apparatus, FIG. 5 is a side view of the threshing apparatus showing an example of the arrangement of the sieving apparatus, FIG. 6 is a side view showing the structure of the sieving apparatus, and FIG. 7 is a perspective view showing an example of the sieving plate. 8 and FIG. 8 are perspective views showing examples of the sieve plate, FIG. 9 is a perspective view showing an example of the sieve plate, and FIG. 10 is a perspective view showing an example of the sieve plate.
FIG. 11 is a side view showing the flow of the sorting wind of the threshing apparatus, FIG. 12 is an enlarged side view around Karino and Karino, FIG. 13 is an enlarged side view around the second fan and the second fan, and FIG. FIG. 15 is a partial cross-sectional plan view of Karamino, and FIG. 16 is a rear view of the threshing apparatus showing the arrangement of the sieving apparatus.
[0010]
First, an overall configuration of a combine according to the present embodiment will be described with reference to FIGS.
A body frame 2 is mounted on the crawler-type traveling device 1, and a raising / cutting unit 3 is provided at the front end of the body frame 2 so as to be able to move up and down. The raising and cutting section 3 protrudes the weeding plate 4 at the front end to divide the culm, and raises a case 5 at the rear thereof to raise the cereal by rotating a tine 6 protruding from the raising case 5. The culm is raised, and the root of the plant is cut off by the cutting blade 7 arranged at the rear of the weeding board 4.
[0011]
The harvested grain culm is conveyed to the rear by an upper conveying device, a lower conveying device, and a vertical conveying device 8, and a stock is passed from a top end of the vertical conveying device 8 to a feed chain 9, and the cereal culm is placed in a threshing device. Is transported. The threshing device includes a threshing unit 12 and a sorting unit 17.
A straw chain 18 is disposed at the rear end of the feed chain 9, and a straw processing unit 19 including a straw cutter device and a diffusion conveyor is formed below the rear of the straw chain 18 to cut the straw. After that, they are made into straw pieces, and then diffused and uniformly released to the field.
[0012]
On the side of the threshing unit 12, a Glen tank 13 for storing the refined granules after sorting is provided, and in front of the Glen tank 13, an operator's cab 14 is provided. Fifteen vertical augers 15a are erected, and the Glen tank 13 is rotatable sideways around the vertical augers 15a.
A discharge conveyor 16 is disposed at the bottom of the Glen tank 13 in the front-rear direction, and power is transmitted from the discharge conveyor 16 to the discharge auger 15, and the grain in the Glen tank 13 is transferred from the tip of the discharge auger 15 to a truck or the like. The grains are discharged. Further, below the threshing unit 12, a sorting unit 17 is disposed, and sorts kernels and grains from the threshing unit 12 (hereinafter, referred to as “processed material”) and sends the grain to the Glen tank 13. It is transported.
[0013]
Next, the threshing unit 12 of the threshing apparatus will be described with reference to FIG.
In the threshing unit 12, the handling cylinder 21 is laid horizontally in the front-rear direction, the handling blades 21 a are planted around the handling cylinder 21, and threshing is performed. A handling cylinder receiving net 20 is provided so that only the processed material falls. At the rear of the handling cylinder 21, on the side of the Glen tank 13, the processing cylinder 22 is laid back and forth in parallel with the handling cylinder 21, and the rear of the handling cylinder 21 is connected to the processing An unprocessed material such as spike sticking particles which cannot be processed by the handling cylinder 21 is sent to the processing cylinder 22.
A processing drum receiving net 24 is also provided around the lower part of the processing drum 22, so that only the processing object falls from the processing drum receiving net 24, and a large straw is provided from the rear end of the processing drum receiving net 24. Debris and the like fall onto the diffusion conveyor via a straw debris discharge mechanism (not shown) and are discharged outside the machine.
[0014]
An outlet partition plate 52 is provided behind the handle cylinder 21, and a sieving device 53 is provided below the outlet partition plate 52 and behind the extension line of the handle cylinder receiving net 20, and Cutting is prevented.
Further, the rear end of the sieving device 53 is configured to be located above the rear end of the first flow board 50. Therefore, the culm that has been cut or removed from the processed material by the sieving device 53 is carried by the sorting wind that rises along the first flow grain plate 50, and the culm does not fall and is not dropped on the chaff sieve 33. It is configured as follows.
[0015]
As shown in FIGS. 4 and 16, the outlet partition plate 52 is formed with a culm opening 52 a, and the outlet partition plate 52 is formed in a shape surrounding the culm opening 52 a, below the culm opening 52 a. An exit partition plate 52 also exists. The sieving device 53 is attached to a portion of the outlet partition plate 52 located below the culm opening 52a.
The sieving device 53 is disposed between the handling cylinder 21 and the suction fan 25 in a side view, on the side of the processing cylinder 22, and above the swinging body 49 provided with the chaff sheave 33. Then, the sieving device 53 is disposed immediately behind the rear end of the handling cylinder 21, and is located at a location where the sorted wind that has passed through the air path below the handling cylinder 21 exits into a wider air path.
[0016]
As shown in FIG. 5, when the exit partition plate 52 provided at the rear end of the handling cylinder 21 has a shape that exists only above the culm opening 52a, the frame 20a to which the handling cylinder receiving net 20 is fixed. The sieve 53 can also be attached to the. Thus, the mounting position of the sieving device 53 can be changed according to the shape of the outlet partition plate 52.
[0017]
As shown in FIG. 6, the sieving device 53 includes an oscillating body and an oscillating operation member for oscillating the oscillating body. The oscillating body is oscillated (turned) by the outlet partition plate 52. (Movement) It comprises a rear-portion-like base 80 pivotally connected, a comb-like sieve plate 81 attached to the upper surface of the base 80, and an arm 82 extending backward from the base 80. I have. A guide member 82a having a U-shape in a side view is fixed to the arm 82.
On the other hand, the swing operation member includes a substantially triangular stay 83 having a lower portion fixed to the left side plate 49L of the swing main body 49, and a roller 83a pivotally supported on the upper portion of the stay 83. 83a is slidably fitted to the guide member 82a of the arm 82. By providing a mechanism for swinging the sieving device 53 on the left side plate 49L side of the swinging body 49, it is possible to configure the swinging body 49 more compact than when provided on the right side plate 49L side.
In the above-described configuration, the swinging of the swinging body 49 causes the roller 83a attached to the swinging body 49 to swing substantially up and down, and receives the swinging of the roller 83a to screen through the arm 82. The base 80 of the device 53 swings, that is, the sieving device 53 swings.
[0018]
The sieving plate 81 of the sieving device 53 is detachable from the base 80 and can be replaced according to the state (condition) of the culm.
For example, as shown in FIG. 7, the sieve plate 81 (81A) is a flat plate having a plurality of teeth 84, 84... Formed in a comb shape, or as shown in FIG. 8, the sieve plate 81 (81B). Are attached to the substrate 85a in parallel with each other in a horizontal direction, and as shown in FIG. 9, a sieve plate 81 (81C) is formed on the substrate 86a by shaping the upper surface into a wavy shape. Are attached in parallel in the left-right direction, and as shown in FIG. 10, slits 87a, 87a. .. can be formed.
[0019]
Next, the sorting unit 17 of the threshing apparatus will be described with reference to FIG.
In the sorting unit 17, specific gravity sorting by the rocking sorting device 27 and wind sorting by Karino 26 are performed, and sorted into the first thing, the second thing, straw waste and the like.
The swing sorting device 27 is housed in the machine frame 35, and the front portion of the swing sorting device 27 is located below the front end of the handling cylinder 21. The rear portion of the swing sorting device 27 is located at the rear end of the dust port processing cylinder 22. It extends to below the part. A swing shaft is provided at the lower front part of the swing sorting device 27, and a swing drive mechanism 34 is provided at the rear part, and the swing main body 49 is configured to swing by the swing drive mechanism 34. .
[0020]
A sorting tub 97 is disposed below the swinging body 49 in the machine frame 35, and the front of the sorting tub 97 is constituted by the Karamin case 60. The sorting tub 97 behind the Karamin case 60 is provided with concave portions 97a and 97b, and the first and second conveyors 36 and 37 are provided in the concave portions 97a and 97b, respectively.
[0021]
At the front of the rocking and sorting device 27, a feed pan 30 is provided in which a plate is formed into a wavy shape so that the grains can be easily transported backward, and a sieving device 54 is provided behind the feed pan 30. Have been. The sieving device 54 is configured so that the front portion thereof is attached to the swing body 49 and swings.
Further, below the sieving device 54, a front portion of the chaff sheave 33, which is the first sorting portion, is provided, and below the chaff sheave 33, the rear feed pan 31 is formed. At the rear of the rear feed pan 31, a mesh-like grain sieve 32, which is a second sorting unit, is continuously provided.
[0022]
A first conveyor 36 and a second conveyor 37 are provided horizontally in the front-rear direction below the swinging sorting device 27 in the left-right direction, and a lifting conveyor 38 is connected to the right side of the first conveyor 36 among them. The first thing that has leaked onto the flouring plate 39 of the first conveyor 36 through the rocking and sorting device 27 is transferred from the first conveyor 36 through the fry conveyor 38 to the Glen tank 13. To be transported.
A second reduction conveyor 40 is connected to the right end of the second conveyor 37, and a front end of the second reduction conveyor 40 is connected to the second processing apparatus 10, and the second processing apparatus 10 The second product from which the branch stalks have been removed by the branch stalk processing cylinder 11 is re-introduced into the sorting start portion of the rocking sorting device 27.
[0023]
A Karin 26 is arranged below the rear part of the feed pan 30 to send a sorting wind to the Glen Sheave 32 and the chaff Sheave 33, and is also a sub-pressure feeding fan between the first conveyor 36 and the second conveyor 37. A second fan 46 is provided to blow the sorting wind, so that the sorting performance does not decrease even in the rear part of the sorting unit 17 where the wind force of the sorting wind by Karino 26 is weakened.
[0024]
Further, above the rear end portion of the swinging sorting device 27, a suction fan 25 is provided horizontally across the entire width, and the suction fan 25 rides on the flow of the sorting wind supplied from the Karino 26 and the second fan 46. The collected dust is sucked and discharged outside the machine.
[0025]
In the threshing unit 12 and the sorting unit 17 configured as described above, the two sieves before and after the sieving device 54 extending behind the feed pan 30 and the sieving device 53 provided below the handling cylinder 21 are provided. It is characterized in that separating devices 53 and 54 are provided.
These sieving devices 53 and 54 both swing using the swing of the swing body 49 as a power source, sieve the culm and the kernel from the processed material, and convey the culm backward.
[0026]
The sieving device 54 extending behind the feed pan 30 is threshed by the handling cylinder 21 and roughly sorted by the handling cylinder receiving net 20, then the paddy layer is leveled by the feed pan 30 and specific gravity sorting is performed. The processed material is transported. The sieving device 53 is interposed between the feed pan 30 and the chaff sheave 33 so that particularly the culm of the processed material does not stay at the front part of the chaff sheave 33 and is quickly conveyed backward. In addition, the culm layer conveyed by the sorting wind from Karino 26 is leveled so that the sorting wind can be more efficiently ridden.
[0027]
Further, in the sieving device 53 provided below the handling cylinder 21, the grains are sieved from the culm sent from the handling cylinder 21, and the culm layer transported rearward is leveled and put on a sorting wind, thereby increasing the efficiency. It can be sent to the suction fan 25 well.
[0028]
As described above, by providing these sieving devices 53 and 54, not only culms and grains are sieved from the processed material, but also a large amount of degranulation is conveyed to the chaff sieve 33, which is a rough sorter at once. And the sorting efficiency is greatly improved by making the processed material easier to put on the sorting wind.
In addition, each of the sieving devices 53 and 54 is also configured to swing using the swing of the swing body 49, so that a separate power source is not required for the swing, and thus the sieve is more effective. It is configured so that a proper sieving action can be obtained.
Furthermore, by arranging the sieving devices 53 and 54 above and behind the chaff sheave 33, which is a rough sorter, a sifting wind (a first sifting wind 73 described later) passing above the chaff sheave 33 reaches the suction fan 25. By effectively arranging the sieving devices 53 and 54 in places that tend to weaken in the middle of the wind path, the reduction of the sorting efficiency in the middle of the sorting wind generated in the Karino 26 and sucked by the suction fan 25 is suppressed. can do.
[0029]
Next, the configuration of the air path from Karino 26 will be described with reference to FIGS. 3 and 11 to 13.
An upper opening 67 and a rear opening 68 are formed in the Karino case 60, and sorting air is sent from the Karino 26 through the upper opening 67 or the rear opening 68.
[0030]
In the upper opening 67 of the Karino case 60, a first air passage 61 is formed by the upper part of the Karino case 60 and a wind direction plate 55 described later. Further, a second air passage 62 is formed by the wind direction plate 55 and the rear feed pan 31. In the rear opening 68 provided behind the Karino 26, a third air passage 63 is formed by the rear feed pan 31 and the rear partition plate 59, and the third air passage 63 is vertically moved by a guide member 77 in two directions. Divided.
[0031]
In such a configuration, the sorting wind blown from the upper opening 67 of the Karino case 60 from the Karino 26 flows into the first air passage 61 and the second air passage 62, and the sorting air blown into the first air passage 61 among them. The wind flows toward the chaff sheave 33 as the first sorting wind 73 while gradually changing the wind direction from above to backward. Then, while flowing along the upper surface of the chaff sheave 33, the processed material that gradually rises toward the rear suction fan 25 and is sucked, and leaks from each of the receiving nets 20 and 24 to the rocking sorting device 27, Wind selection on the chaff sheave 33 is enabled.
[0032]
Then, the sorting wind blown into the second air passage 62 is guided as a second sorting wind 74 between the chaff sheave 33 and the Glen sheave 32, and then flows along the lower surface of the chaff sheave 33, and flows through the inside of the chaff sheave 33. Gradually rises and is sucked into the suction fan 25, and sends out the wet processing material remaining on the feed pan 31 backward, and at the same time, the processing material leaking down the chaff sieve 33 on the Glen sieve 32. Wind selection is possible.
[0033]
Here, the structure of the wind direction plate 55 will be described.
The air volume above and below the chaff sheave 33 changes due to differences in the chaff volume and the moisture content, resulting in a difference, leading to a reduction in sorting performance. In order to avoid this, it is necessary to provide fans above and below the chaff sheave 33, which causes an increase in cost.
In view of this, a wind direction plate 55 is provided to divide the air from Karino 26, which is a blast source, into upper and lower portions of the chaff sheave 33. The wind direction plate 55 is an upper opening 67 that is an exit from the Karamin case 60, and is provided in a space formed by the Karamin case 60, the rear feed pan 31, and the front of the chaff sheave 33.
[0034]
As shown in FIG. 12, the wind direction plate 55 is composed of fixed plates 55a and 55b having one side joined to each other, and a movable plate 55c having a rotation support shaft 55d provided at a joint side of the fixed plates 55a and 55b. ing. By rotating the movable plate 55c about the rotation support shaft 55d, it is possible to adjust the amount of air blown up and down the chaff sheave 33.
Therefore, the wind direction plate 55 can reliably divide the air blown from the Karin 26 into the upper and lower portions of the chaff sheave 33, and the paddle or the like whose bouncing direction changes depending on the angle of the chaff sheave 33 is the Karin 26 which is a blast source. Prevents intrusion into the side.
[0035]
Further, by making the wind direction plate 55 movable, the amount of air blown on the upper side and the lower side of the chaff sheave 33 can be adjusted. For example, when the flow rate of the grain is small or the grain is dry, the movable plate 55c is rotated upward to make the amount of air blown upward of the chaff sheave 33 smaller than the amount of air blown downward. In addition, the sorting wind on the upper side of the chaff sheave 33 is weakened, and the paddy passing over the chaff sheave 33 is prevented from being scattered by the sorting wind. Also, for example, when the flow rate of the grains is large or when the grains are wet, the movable plate 55c is rotated downward to make the amount of air blown upward of the chaff sheave 33 larger than the amount of air blown downward. The sorting wind on the lower side of the chaff sheave 33 is weakened, the sorting wind passing over the chaff sheave 33 is strengthened to separate dust from grains, and the filtration rate of the chaff sheave 33 is increased to reduce loss.
[0036]
The movable plate 55c of the wind direction plate 55 can be manually adjusted. However, the movable plate 55c is rotated to provide an actuator 56, and the actuator 56 is electrically connected to a control device 57 to control the operation. The movable plate 55c can be remotely controlled, or the movable plate 55c can be automatically controlled so as to be in a state suitable for the state of the processing object.
[0037]
As shown in FIG. 14, an actuator 56 for rotating and driving the movable plate 55c is provided near the rotation support shaft 55d of the movable plate 55c constituting the wind direction plate 55. In this embodiment, an electric motor is used as the actuator 56. The actuator 56 is electrically connected to the control device 57, and receives an instruction from the control device 57 to operate the actuator 56 to rotate the movable plate 55c.
Further, an air volume adjustment dial 89 is provided in the cab 14 as a rotation position operation member of the movable plate 55c of the air direction plate 55. The air volume adjustment dial 89 is electrically connected to the control device 57, and the rotational operation position of the air volume adjustment dial 89 is transmitted to the control device 57 as a voltage value.
Then, the rotation operation position of the air volume adjustment dial 89 is transmitted to the control device 57, and the control device 57 determines a relationship between the previously recorded rotation operation position of the air volume adjustment dial 89 and the rotation position of the movable plate 55c. , The rotation position of the movable plate 55c is determined, and a signal is sent to the actuator 56 to drive the movable plate 55c to the predetermined rotation position.
[0038]
As described above, not only can the movable plate 55c of the wind direction plate 55 be operated by the operating member, but also the movable plate 55c of the wind direction plate 55 can be automatically controlled according to the change in the amount of grain to be processed.
The chief sheave 33 is of a variable angle type, and detects the amount of grain in the sorting part by the culm flow rate, and automatically adjusts the angle of the chief sheave 33 to control the amount of leakage. The angle of the chaff sheave 33 is controlled so as to decrease the angle at the time of wheat or low flow rate and to increase the angle at the time of high flow rate. The rotation position of the movable plate 55c of the wind direction plate 55 is automatically controlled based on the angle of the chaff sheave 33 whose angle is changed as described above.
An angle sensor 90 for detecting the angle of the chaff sheave 33 is provided. The angle sensor 90 is electrically connected to the control device 57, and uses the angle of the chaff sheave 33 detected by the angle sensor 90 as a voltage value as a control device. 57. In the cab 14, an automatic manual changeover switch 88 for switching whether or not to automatically control the movable plate 55c of the wind direction plate 55 is provided. When automatic control is selected, an ON signal is transmitted to the control device 57. You.
Then, in a state where the automatic control is selected by the automatic manual changeover switch 88, the control device 57 determines the rotation position of the movable plate 55c according to the angle of the chaff sheave 33 detected by the angle sensor 90, and controls the actuator 56 to A signal is sent to drive 55c to a predetermined rotation position.
It should be noted that a map defining the turning position of the movable plate 55c corresponding to the angle of the chaff sheave 33 is stored in the control device 57 in advance, and the control device determines the turning position of the movable plate 55c based on this map. .
[0039]
On the other hand, the sorting wind blown rearward from the rear opening 68 of the sorting tub 97 from the Karino 26 flows into the third air passage 63 as the third sorting wind 75. The third sorting wind 75 is divided into an upper third upper sorting wind 75a and a lower third lower sorting wind 75b by a guide member 77 provided in the third air passage 63 so as to be adjustable in angular position.
[0040]
Among them, the third upper sorting wind 75a flows from the third air passage 63 → the rear portion of the grain sieve 32 → the rear portion of the chaff sheave 33, and is finally sucked into the suction fan 25 and leaks the treated grain sheave 32 under the grain sieve 32. Wind selection is possible.
On the other hand, the third lower sorting wind 75b blows down the inside of the third air passage 63 obliquely rearward and downward, collides with the first flow grain plate 50, and the wind direction changes obliquely rearward and upward. The air flows from the upper surface → the rear of the grain sheave 32 → the upper surface of the straw rack 29, is finally sucked into the suction fan 25, and the wind selection can be performed under the grain sieve 32 together with the third upper selection wind 75a.
[0041]
Note that the Karino 26 employs a plate fan provided with a plurality of plates 26b on a rotating shaft 26a to be driven. In particular, in a plate fan, the wind speed near the side plate of the Karino case 60, which is the casing of the Karino 26, tends to decrease, but in order to suppress this, the rear opening 68 and the upper opening 67 of the Karino case 60 are reduced. The overflow prevention piece 58 is provided at the outlet of the wind such as.
As shown in FIGS. 13 and 15, overflow prevention pieces 58, 58 having an L-shaped cross section are provided on the left and right side plates 60 </ b> L, 60 </ b> R of the Karamin case 60. The two overflow prevention pieces 58, 58 are fixed to the side plates 60L and 60R, and the other surface is set up in a direction substantially perpendicular to the side plates 60L and 60R. It extends into the Karamin case 60 until it fully overlaps the left and right directions.
In this way, the overflow prevention piece 58 closes the air path that tries to escape from both the left and right sides of the Karino 26 to the side opposite to the conveyor 36 side, so that the airflow from the Karino 26 near the side plates 60L and 60R. This prevents the wind speed from dropping and prevents overflow.
[0042]
Next, the configuration of the air path from the second fan 46 will be described with reference to FIGS.
Above the second fan 46, the upper part of the first tray 50 is fixed to the swinging body 49 via a mounting plate, and the lower part of the first tray 50 is located in the concave portion 97a in which the conveyor 36 is provided. It extends obliquely downward and forward. Similarly, the upper part of the second grain board 51 is fixed to the second reduction board 64 attached to the swing body 49 that is swinged by the swing drive mechanism 34, and the lower part of the second grain board 51 is , And extends obliquely downward and forward toward the concave portion 97 b in which the second conveyor 37 is provided.
[0043]
Further, a preliminary guide member 95 which is inclined rearward and obliquely upward is provided horizontally at a substantially vertical center position of a preliminary air passage 96 formed between the upper surface of the second flow grain plate 51 and the lower surface of the straw rack 29. The upper preliminary air passage 96a is formed from the upper surface of the preliminary guide member 95 and the lower surface of the preliminary upper guide member 94, and the lower preliminary air passage 96b is formed from the lower surface of the preliminary guide member 95 and the upper surface of the second flow board 51. Is formed.
[0044]
In such a configuration, the sorting wind blown rearward from the discharge port 91 of the second fan 46 flows through the upper preliminary air passage 96a as the preliminary sorting wind 93, and most of the sorting wind is discharged as the exhaust wind 93a. And a part of the air flows into the lower preliminary air passage 96b from the rear end of the preliminary guide member 95 as a return wind 93b. This is because the air (negative pressure) in the lower preliminary air passage 96b flows from the front end of the auxiliary guide member 95 to the upper preliminary air passage 96a by the suction effect of the pre-sorting wind 93 flowing at high speed (positive pressure) in the upper preliminary air passage 96a. The return wind 93b forms a vortex around the preliminary guide member 95. And this eddy current promotes the flow of the second product on the second flow board 51.
[0045]
Further, by attaching the first flow grain plate 50, the second reduction plate 64, and the second flow grain plate 51 to the swing drive mechanism 34, the first flow grain plate 50, The number reduction plate 64 and the second flow grain plate 51 swing. Therefore, in the first flow grain plate 50, the second reduction grain plate 64, and the second flow grain plate 51, clogging that is likely to occur due to a wet material or the like can be prevented by moving.
[0046]
The straw rack 29 is disposed on an extension of the chaff sheave 33, and the rear end of the straw rack 29 extends to near the end of the swinging body 49. The upper surface of the straw rack 29 is formed so that the front part is lowered rearward, and the middle part is raised rearward. More specifically, after the straw rack 29 is lowered from the end of the chaff sheave 33 by a height H (FIG. 13), the straw rack 29 is raised rearward.
In this way, a large opening to the preliminary air passage 96 can be ensured, so that grains and the like to be reduced to the second flow board 51 can be more effectively supplied to the preliminary air passage 96. In addition, a gap for increasing the efficiency of the suction action generated in the preliminary air passage 96 is ensured so that the dust can be efficiently sent to the end of the swing body 49. Therefore, although the third reduction loss is reduced, the second reduction loss tends to increase.
Further, the lowermost point on the upper surface of the straw rack 29 is disposed so as to be located behind the front end of the preliminary guide member 95. In this way, by expanding the space between the preliminary guide member 95 and the straw rack 29 and increasing the amount of the conveyed material during this time, it is possible to collect a larger amount of the second reductant, and The effect of the plate 51 is improved.
[0047]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0048]
That is, as set forth in claim 1, a threshing apparatus comprising a threshing unit and a sorting unit, wherein a feed pan for receiving a processed material leaking from a receiving net of the threshing unit and transferring the processed material backward, and a process from the feed pan The sorting section is provided with a rough sorting section for sorting products, and a fine sorting section for further sorting the processed materials leaking from the rough sorting section, and a Karamin for blowing a sorting wind is arranged below the feed pan, and a suction fan is provided. In the one that is arranged at the rear of the sorting unit, since a sieving device is provided between the feed pan and the coarse sorting unit below the receiving net of the threshing unit, a large amount of threshing is transferred to the coarse sorting unit at once. And culms and grains can be sieved.
[0049]
As set forth in claim 2, in the threshing apparatus according to claim 1, a sieving device is provided below the threshing unit after the cylinder and on the extension of the receiving net of the threshing unit, and two sieving devices are provided before and after. Is provided, so that a large amount of shedding at a time can be prevented from being conveyed to the rough sorting section, and the culm and the grain can be sieved. In addition, it is possible to suppress a decrease in the sorting efficiency of the sorting wind that weakens on the way.
[0050]
A threshing apparatus comprising a threshing unit and a sorting unit, wherein a feed pan which receives a processed product leaking from a receiving net of the threshing unit and transfers the processed product to the rear, and a processed product from the feed pan. The sorting section is provided with a rough sorting section for sorting, and a fine sorting section for further sorting the processed material leaking from the rough sorting section, and a Karamin for blowing the sorting wind is arranged below the feed pan, and the suction fan is sorted. A plurality of sieving devices are installed in the air path from the Karamin to the suction fan for the sorting air blown from Karamin to the upper part of the rough sorting section, so that a large amount of degranulation is performed at once. And the culm and the grains can be sieved. In addition, it is possible to suppress a decrease in the sorting efficiency of the sorting wind that weakens on the way.
[0051]
A threshing apparatus comprising a threshing unit and a sorting unit, as described in claim 4, wherein a feed pan which receives the processed material leaking from a receiving net of the threshing unit and transports the processed material backward, and a processed material from the feed pan. The sorting section is provided with a rough sorting section for sorting, and a fine sorting section for further sorting the processed material leaking from the rough sorting section, and a Karamin for blowing the sorting wind is arranged below the feed pan, and the suction fan is sorted. In the rear part, a movable wind direction plate is installed in front of the coarse separation part to separate the air from Karino into the upper and lower parts of the coarse separation part. The amount of wind can be adjusted, and by changing according to the state of the processed material, a decrease in the sorting efficiency of the sorted wind can be suppressed.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine equipped with a threshing apparatus according to the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a partial cross-sectional side view of the threshing apparatus.
FIG. 4 is a rear view of the threshing apparatus.
FIG. 5 is a side view of the threshing apparatus showing an example of the arrangement of the sieving apparatus.
FIG. 6 is a side view showing the structure of the sieving apparatus.
FIG. 7 is a perspective view showing an example of a sieve plate.
FIG. 8 is a perspective view showing an example of a sieve plate.
FIG. 9 is a perspective view showing an example of a sieve plate.
FIG. 10 is a perspective view showing an example of a sieve plate.
FIG. 11 is a side view showing a flow of a sorting wind of the threshing apparatus.
FIG. 12 is an enlarged side view of Karamino and Karamino.
FIG. 13 is an enlarged side view of a second fan and a periphery of the second fan;
FIG. 14 is an explanatory diagram showing control of a wind direction plate.
FIG. 15 is a plan partial cross-sectional view of Karamino;
FIG. 16 is a rear view of the threshing apparatus showing the arrangement of the sieving apparatus.
[Explanation of symbols]
12 Threshing section
17 Sorting Department
21 Handling cylinder
24 Handling cylinder receiving net
25 Suction fan
26 Karamin
30 Feed pan
33 Chaff Sheave
34 Swing drive mechanism
49 Swing body
52 Exit divider
53 sieving device
54 sieving device

Claims (4)

A threshing device comprising a threshing unit and a sorting unit, a feed pan that receives the processed material leaking from a receiving net of the threshing unit and transfers the processed material to the rear, and a coarse sorting unit that sorts the processed material from the feed pan, In the sorting section, a fine sorting section for further sorting the processed material leaking from the rough sorting section is provided in the sorting section, and a Karin for blowing the sorting wind is arranged below the feed pan, and a suction fan is arranged in the rear of the sorting section. ,
A threshing apparatus characterized in that a sieving apparatus is provided below a receiving net of a threshing section and between a feed pan and a rough sorting section. The threshing device according to claim 1,
A threshing apparatus characterized in that a sieving device is provided below the threshing unit after the handling cylinder and on the extension of the receiving net of the threshing unit, and two sieving devices are provided before and after. A threshing device comprising a threshing unit and a sorting unit, a feed pan that receives the processed material leaking from a receiving net of the threshing unit and transfers the processed material to the rear, and a coarse sorting unit that sorts the processed material from the feed pan, In the sorting section, a fine sorting section for further sorting the processed material leaking from the rough sorting section is provided in the sorting section, and a Karin for blowing the sorting wind is arranged below the feed pan, and a suction fan is arranged in the rear of the sorting section. ,
A threshing apparatus characterized in that a plurality of sieving devices are provided in an air passage from a Karamin to a suction fan for a sorting wind sent from a coarse sorting section to an upper side. A threshing device comprising a threshing unit and a sorting unit, a feed pan that receives the processed material leaking from a receiving net of the threshing unit and transfers the processed material to the rear, and a coarse sorting unit that sorts the processed material from the feed pan, In the sorting section, a fine sorting section for further sorting the processed material leaking from the rough sorting section is provided in the sorting section, and a Karin for blowing the sorting wind is arranged below the feed pan, and a suction fan is arranged in the rear of the sorting section. ,
A threshing apparatus characterized in that a movable wind direction plate is provided in front of the rough sorting section to divide the air from Karino into upper and lower portions of the rough sorting section.

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