JP2009005640A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester enabling the selection by a winnower fan, a sieve or the like to be carried out accurately even if a threshing operation of a wetted material such as grain culms with morning mist attached thereto, and grain culms wetted by fine rain as the subject is carried out. <P>SOLUTION: The combine harvester is equipped with the winnower fan 26 for carrying out wind selection by enabling cooling wind after cooling an engine to be sucked, a means for detecting the amount of reaped grain culms, a sucking-regulating means for regulating the sucking by the winnower fan 26, a winnower fan case 56 covering the winnower fan 26 and forming a discharging opening 57 thereof, a wind direction-changing means for changing the direction of the discharged wind discharged from the discharging opening 57, and a controller 165. The combine harvester also has a wet material mode-switching means to enable the sucking-regulating means and the wind direction-changing means to be changed according to the switching of the wet material mode-switching means and the amount of the grain culms. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a technique for an intake section of a Chinese fan in a combine that includes a sorting section that threshs cereals harvested by a harvesting section and swings and winds the threshed grain.

  In general, a combiner performs air sorting in a sorting unit by blowing air (sorting air) from a tang fan toward a swinging sorting device or a receiving net. However, when a harvesting operation of a moist material such as cereals with morning mist attached or cereals wet with light rain, the inside of the threshing unit or the selection unit may become wet and clogging may occur.

The technique disclosed in Patent Document 1 reduces the handling cylinder rotation speed by increasing the sorting air volume by the tang fan, reducing the sheave, and lowering the engine rotation speed during wet handling work. By narrowing the sheave by increasing the selection air volume by the tang during the handling operation, it is possible to prevent the cocoons from sticking together in a dumpling form or clogging the sheave.
However, it is disadvantageous in that the accuracy of sorting is sacrificed because the air volume is increased or the sheave is squeezed as described above.

The technique disclosed in Patent Document 2 is provided with a dew removing device that performs a dew removing action on the combine, and the engine mounted on the combine is decelerated in relation to the driving of the dew removing device, and the threshing cylinder is rotated at a reduced speed. When the threshing cylinder is decelerated, the second processing cylinder is configured to be rotated at an increased speed so that at least the rotation speed before the engine is decelerated can be maintained. Since the second processing cylinder is rotated at a higher speed as described above, clogging of the second object can be prevented.
However, even with the dew wiping device, the cereal grains are disadvantageous in that the sheaves are easily clogged because the grains and leaf stems are not completely dried and are in a wet state.
In addition, a technique for guiding the cooling air of the engine to the red pepper is also known (see Patent Document 3). However, the amount of arabic inhalation was unbalanced on the left and right, and the air volume in the rocking sorter was not uniform on the left and right, resulting in uneven sorting efficiency.
JP 2001-211738 A JP 2001-231333 A Japanese Utility Model Publication No. 55-59129

  This invention is made | formed in view of the subject which concerns, and it aims at provision of the combine which can select grain | grains accurately using the wind power of a Chinese fan.

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

  That is, in claim 1, a combine that threshs the cereal that has been cut by the reaping unit, and performs oscillating selection and wind selection of the threshed grain, wherein the cooling air after cooling the engine is inhalable. A tang fan that performs wind sorting, a means for detecting the amount of harvested cereal culm, a suction adjusting means for adjusting the suction of the tang fan, a tang fan case that covers the tang fan and forms its outlet, A wind direction changing means for changing the direction of the discharge air discharged from the discharge port, and a control means, a wet material mode switching means, and according to the switching of the wet material mode switching means and the amount of cereal The suction adjusting means and the wind direction changing means are changed.

  According to a second aspect of the present invention, the suction adjusting means is provided in the engine side inlet and the outside air inlet of the tang fan, and when in the wet material mode, the engine side inlet is opened and the outside air inlet is closed. It is something to control.

  According to a third aspect of the present invention, the suction adjusting means is provided at an engine side inlet and an outside air side inlet of the tang fan, and the suction amount adjusting means is configured to be connected to the engine side suction when the harvested cereal amount is equal to or less than a set value. It controls to open the mouth and close the outside air inlet.

  According to a fourth aspect of the present invention, the wind direction changing means can change the discharge direction from the discharge port in accordance with the amount of suction adjusted by the suction adjusting means.

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

  If comprised like Claim 1, according to the threshing state, since the suction | inhalation amount of a Kara fan can be adjusted and ventilation volume can be changed, the deterioration of the selection in a selection part can be prevented.

  According to the second aspect of the present invention, it is possible to perform wind selection using hot air from the engine at the time of wet material harvesting, so that clogging due to wetness in the selection unit can be prevented.

  According to the third aspect of the invention, the hot air of the engine can be supplied to the sorting unit at the time of non-threshing such as turning and discharging, so that drying in the sorting unit can be promoted and deterioration of the sorting efficiency due to wetness can be prevented. .

  According to the fourth aspect of the present invention, the wind discharge direction of the Kara fan can be changed, so that a large disturbance in the distribution of the sorting wind can be prevented and good sorting can be maintained.

  The best mode for carrying out the invention will be described below with reference to the drawings. In the figure, the direction indicated by the arrow A is the front, and the direction perpendicular to the front-rear direction is the left-right direction.

  Below, the whole structure of the combine 201 which is one Embodiment of this invention is demonstrated using FIG.

Below, the whole structure of the combine 201 is demonstrated using FIG.
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 FIG. 1, the combine 201 has a traveling machine body 2 supported by a pair of left and right traveling crawlers 1, and at the front part of the traveling machine body 2, a harvesting part 3 that takes in while harvesting corn can be adjusted up and down. It is attached to. On the left side of the traveling machine body 2, a threshing unit 12 for threshing and selecting the harvested cereals is disposed, and on the right side of the traveling machine body 2, a grain tank 13 for storing grains after threshing is disposed. 12 and side by side. A discharge auger 15 is provided at the rear portion of the traveling machine body 2 so as to be able to turn, and the grains inside the grain tank 13 are discharged from a throat throw port 15a of the discharge auger 15 to a truck bed or a container. . An operation unit 14 is disposed in front of the grain tank 13.

  The driving unit 14 includes a substantially U-shaped steering handle, a main transmission lever, an auxiliary transmission lever, a cutting clutch lever, a cutting transmission lever, an operation unit 14a, and a driving seat 14b. Has been. An engine 52 serving as a power source for driving the combine 201 itself and driving a feed chain 9 described later is disposed below the driver seat 14b.

  A cutting blade device (not shown) for cutting the stock of uncut grain culm in the field is disposed below the cutting frame 3a below the cutting unit 3. In front of the cutting frame 3a at the front of the cutting unit 3, a pulling device (not shown) for two strips that causes an uncut grain culm in the field is disposed. Between the pulling device and the front end portion (feed start end side) of the feed chain 9, there is disposed a culm transport device 3b for transporting the culm harvested by the cutting blade device to the feed chain 9. At the front end of the cutting frame 3b at the lower part of the pulling device, a weeding body 3c that projects an uncut grain culm in the field is projected.

  With such a configuration, the combine 201 can continuously cut the uncut cereals in the field by driving the cutting unit 3 while driving the traveling crawler 1 by the engine 52 and moving in the field.

  A waste chain 18 is disposed on the rear end side (feed end side) of the feed chain 9, and a chain guide 144 (see FIG. 3) is configured to be extendable below the waste chain 18. The waste can be switched between “cut” and “non-cut”. The waste handed over to the waste chain 18 from the rear end side of the feed chain 9 is discharged to the rear of the traveling machine body 2 while the chain guide 144 is extended, or the chain guide 144 is shortened. Then, after the cutting cutter 19 disposed behind the threshing portion 12 is appropriately cut to a short length, it is discharged to the lower rear side of the traveling machine body 2.

Below, the threshing part 12 is demonstrated using FIG.
As shown in FIG. 2, the threshing unit 12 includes a handling cylinder 21 for threshing and threshing, a handling chamber 21 a in which the handling cylinder 21 is installed in the front-rear direction, and a receptacle disposed around the lower side of the handling cylinder 21. A net 20. A sorting unit is disposed below the receiving net 20, and the sorting unit swings and sorts the grains that have passed through the receiving net 20, and the front and lower side of the shaking sorting device 27. Arranged and arranged in the upper part of the rear part (Strolack 29) of the Kara fan 26 that blows the sorting wind to the swing-sorted grain and the swing sorter 27, sucks the dust and discharges it outside the machine. And a suction fan 25.
As shown in FIG. 2, the swing sorting device 27 includes a feed pan 30 disposed at the front portion of the swing sorting device 27, a chaff sheave 33 disposed at the rear portion of the feed pan 30, and the chaff sheave. A grain sieve 32 disposed below 33 and a Strollac 29 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 20.
In addition, a transport unit is disposed below the swing sorting device 27, and the transport unit is installed in the left-right direction behind the Kara fan 26 to convey 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. The cereal conveyor 38 which conveys a thing to the grain tank 13 and the 2nd reduction | restoration conveyor 40 connected with the right end of the 2nd conveyor 37 and returning the 2nd thing on the feed pan 30 are provided.

  With such a configuration, the threshing unit 12 is configured such that the cereals conveyed from the reaping unit 3 by the cereal conveyance device 3b are inherited by the feed chain 9 and are held and conveyed rearward. When the tip side is carried into the handling chamber 21a, it is conveyed from the front to the rear while threshing the cereal with the rotation of the handling cylinder 21. Then, the grain that has leaked through the receiving net 20 is subjected to swing sorting by the swing sorting device 27 and wind sorting by the Kara fan 26, 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 13 via the cereal conveyor 38, and the grain (second thing) that has fallen on the second conveyor 37 passes through the second reduction conveyor 40. Through the feed pan 30 and re-sorted. Further, the dust that has entered the sorting air from the tang fan 26 is sucked by the suction fan 25 and discharged outside the apparatus.

As shown in FIGS. 2, 3, and 5, the tang fan 26 is covered with a tang fan case 56. In the Kara fan case 56, inlets 55L and 55R for introducing air are formed on the left side and the right side, respectively. Plates 58L and 58R are respectively fixed in the diameter direction on the left side and the right side of the tang fan case 56, and a tang shaft 53 is pivotally supported by the plates 58L and 58R. The rear portion of the Kara fan case 56 is opened, and a discharge port 57 for blowing the sorting air to the chaff sheave 33 and the Glen sheave 32 is formed.
As shown in FIG. 3, the red fan case 56 includes first hot shutters 59R and 59R and second hot shutters 59L and 59L in the suction ports 55R and 55L, respectively. The first Chinese shutters 59R and 59R and the second Chinese shutters 59L and 59L are configured as a pair of left and right in the side view so as to open and close the left and right sides of the suction ports 55R and 55L, respectively. The first rotary shutters 59R and 59R and the second rotary shutters 59L and 59L are each formed in a semicircular shape. A rotary shaft is provided at one end, and the rotary shaft can be rotated and opened by an actuator such as a motor. The actuator is connected to the control means. However, the Kara shutter is not limited as long as it can be opened and closed at the left and right suction ports, and it can be circular, or it can be composed of 3 or more leathers, and it can be constructed like a blind. Is also possible.

  As shown in FIGS. 5 (a) and 5 (b), the tang fan 26 is disposed substantially at the left rear of the engine 52. The left side of the engine room is communicated with suction ports 55R and 55L by a duct or the like. However, the configuration is not limited to this, and any arrangement may be used as long as hot air from the engine 52 can be introduced into the suction port 55R provided on the engine 52 side. Alternatively, the configuration may be such that the hot air can be introduced into the suction port 55R by introducing means such as a pipe. Here, “hot air” refers to air after outside air is taken in from outside the combine 201 (engine room) and the engine 52 is cooled.

  As shown in FIG. 2, a suction fan 25 is installed horizontally above the rear end portion of the swing sorting device 27, and the suction fan 25 has been subjected to the flow of sorting air supplied from the tang fan 26. Dust is sucked and discharged outside the machine.

As shown in FIG. 2, the first conveyor 36 and the second conveyor 37 are laterally arranged in the left-right direction at the front-rear halfway position below the swing sorting device 27. The positional relationship between the first conveyor 36 and the second conveyor 37 is such that the first conveyor 36 is closer to the tang fan 26 and the second conveyor 37 is farther from the tang fan 26.
The right end portion of the first conveyor 36 is connected with a whipping conveyor 38 provided such that its longitudinal direction (conveying direction) is substantially vertical, and the upper end of the whipping conveyor 38 communicates with the inside of the Glen tank 13. Yes.

  A mixture of grains, shoots adhering grains, immature grains, fine swarf, etc. that have been introduced into the sorting section and leaked onto the feed pan 30 is generated by the Kara fan 26 in the process of being leaked onto the chaff sheave 33. Due to the air flow from the front to the rear of the sorting section, a part of the fine sawdust is blown away backward. Mixtures such as grains leaked on the chaff sheave 33, shoots adhering grains, immature grains and fine swarf are conveyed backward by the rocking of the rocking sorter 27. At this time, the grains, immature grains Grains, branch sticking grains, fine swarf and the like fall below the opening of the chaff sheave 33, and large swarf is conveyed to the rear of the chaff sheave 33 and is discharged out of the machine through the stroller 29.

The grain, the immature grain, the branch leaf attached grain, the fine shavings, and the like that have dropped below the opening of the chaff sheave 33 are leaked onto the grain sieve 32. At this time, part of the fine swarf is blown away and separated by the sorting air from the tang fan 26.
Of the grains, immature grains, branch shoot adhering grains, fine swarf, etc. that have leaked onto the grain sieve 32, the cereal grains, immature grain, fine swarf, etc. pass through the grain sieve 32 and fall downward. At this time, the grain (first) having the largest weight is recovered by the first recovery unit 109 and is transported from the first conveyor 36 to the grain tank 13 through the cereal conveyor 38.
On the other hand, unprocessed grains mixed with a small amount of immature grains, a part of fine swarf, and spiked grains, grains, etc. are blown backward by the sorting wind from the Kara fan 26 and are collected in the second recovery unit 110. After being collected and transported from the second conveyor 37 through the second reduction conveyor 40 to the branch rachis processing apparatus 10 and the branch rachis removed from the branch rachis processing cylinder 11, it is placed on the feed pan 30 (or on the chaff sheave 33). Will be re-entered.

Hereinafter, the inhalation amount adjusting means will be described with reference to FIG.
The intake amount adjusting means changes the area of the intake ports 55L and 55R to change the amount of outside air introduced into the hot air fan 26.
The inhalation amount adjusting means in this embodiment includes a first red shutter opening changing mechanism 171R, a first red shutter 59R / 59R, a second red shutter opening changing mechanism 171L, a second hot shutter 59L / 59L, Consists of wires and the like.

As shown in FIG. 3, the first red shutters 59R and 59R are configured to open and close the left part and the right part in the side view of the suction port 55R.
The first red shutter opening changing mechanism 171R includes an actuator such as a motor (not shown), a sector gear, an arm, a link, and the like for rotating the first red shutters 59R and 59R.
When the wire or the like connecting the first rotary shutter opening changing mechanism 171R and the first rotary shutter 59R / 59R is pulled or sent out, the first rotary shutter 59R / 59R is opened (FIG. 3). 2) and closing (solid line position shown in FIG. 3). In this way, the amount of outside air introduced into the Chinese fan 26 is changed. The second Kara shutter 59 has substantially the same configuration.

Below, a wind direction change means is demonstrated using FIG.
The air direction changing means changes the discharge direction of the selected air from the discharge port 57.
The wind direction changing means in the present embodiment is composed of rotating shafts 81R, 81L, a first wind direction plate motor 82R, a second wind direction plate motor 82L, a first wind direction plate 80R, and a second wind direction plate 80L. . However, although the number of wind direction plates is two in this embodiment, the number is not limited.
As shown in FIG. 4, a pair of left and right rotating shafts 81 </ b> R and 81 </ b> L are provided in the vicinity of the discharge port 57 in the hot fan case 56 so as to be substantially symmetrical with respect to the left and right center of the hot fan case 56.
A first wind direction plate 80R and a second wind direction plate 80L formed of plate-like members having a substantially trapezoidal (or triangular) shape in a side view are fixed to the rotation shafts 81R and 81L, respectively. However, the shape of the wind direction plate is not limited to the above shape.
The rotary shafts 81R and 81L are configured to rotate by driving the first wind direction plate motor 82R and the second wind direction plate motor 82L, respectively. Accordingly, the first wind direction plate 80R and the second wind direction plate 80L also rotate.

  Below, the controller 165 which becomes a control means is demonstrated using FIG.2, FIG3 and FIG.4.

The controller 165 receives signals from various sensors and operation switch groups (input side) provided in the combine 201, and transmits various commands to various actuators (output side) based on the received signals. is there.
In this embodiment, as shown in FIGS. 3 and 4, the signal from the input side is the chaff sheave opening changing mechanism 170, the first tang shutter opening changing mechanism 171R, the first wind direction plate motor 82R, the second tang shutter opening. It is transmitted to the degree changing mechanism 171L and the second wind direction plate motor 82L.
In the present embodiment, the various sensors and operation switch group (input side) include an angle sensor 60, a wet material mode changeover switch 166, and a sorting adjustment dial 167.

  As shown in FIG. 3, the angle sensor 60 is provided in the waste transporting device, and detects the amount of waste or the amount of harvested grain. However, it is also possible to adopt a configuration in which the amount of the cereal transported in the cutting unit or the feed chain, or the processed material deposited on the feed pan 30 or the chaff sheave 33 of the sorting unit 17 is detected. The opening degree of the chaff sheave 33, the first Chinese shutter 59R, and the second Chinese shutter 59L is adjusted according to the amount of grain detected by the sensor 60.

Specifically, as shown in FIG. 3, a chain guide (clamping) 144 is disposed on the lower side of the waste chain 18 in order to sandwich the waste, and a detection rod 143 is suspended from the chain guide 144. Established. The lower end of the detection rod 143 is in contact with the detection plate 145a from above. A rotation shaft 145d fixed to the end of the detection plate 145a is pivotally attached to the machine body of the combine 201.
When the amount of waste (grain) transported to the rear part of the machine body by the waste chain 18 increases, the chain guide 144 is pushed downward to rotate the detection plate 145a, and the detection plate 145a The angle changes.
Accordingly, the amount of work can be detected by providing the angle sensor 60 for detecting the change in the angle of the detection plate 145a.
As described above, the amount of waste processed by the threshing unit 12 of the combine 201 is configured to be detected by the angle sensor 60.

  The wet material mode change-over switch 166 shown in FIG. 3 is for determining whether the operator is in the threshing state whether or not the wet material is being cut and inputting the information. In this embodiment, both the first red shutter 59R and the second red shutter 59L are opened when the normal mode is set, and only the first red shutter 59R is opened when the wet mode is selected. The two-color shutter 59L is closed. That is, in the wet material mode, the engine-side shutter is opened and the outside air intake side is closed.

  The sorting adjustment dial 167 shown in FIG. 3 is for the operator to determine the threshing state based on the amount of waste to be processed, the state of the wet material, etc., and to input the information by adjusting the dial value. is there. In the present embodiment, the larger the dial value of the sorting adjustment dial 167, the larger the opening of the chaff sheave 33, the first Chinese shutter 59R, and the second Chinese shutter 59L.

  A signal from the wet material mode change-over switch 166 detects whether or not the wet material is being cut, and a signal from the angle sensor 60 detects the amount of waste (grain) being processed (work amount). (Detection work).

  Hereinafter, the control mechanism of the opening degree of the chaff sheave 33, the opening degree of the first tang shutters 59R and 59R, the opening degree of the second tang shutters 59L and 59L, and the direction of the wind direction plates 80L and 80R will be described with reference to FIGS. .

In the harvesting work by the combine 201, the mowing work and the threshing / sorting work are simultaneously performed. Therefore, the processing amount of the combine 201 at the time of harvesting work is proportional to the traveling speed, and it is necessary to increase the processing speed of the threshing / sorting work.
More specifically, if the amount of cereals added to the threshing unit 12 increases, the opening degree of the chaff sheave 33 is increased to increase the amount of the processing object that falls below the chaff sheave 33, and the first tang shutter shutter 59R. It is necessary to perform an operation for increasing the wind sorting capability by increasing the opening of 59R and the second Kara shutters 59L and 59L to increase the air volume of the sorting wind by the Kara fan 26.

As shown in FIG. 3, the first red pepper shutter opening changing mechanism 171 </ b> R includes information on the amount of waste processed by the threshing unit 12 detected by the angle sensor 60, the wet material mode changeover switch 166, and the sorting adjustment dial 167. Based on the input information, the controller 165 receives a signal to drive. It is to be noted that the second tangential shutter opening changing mechanism 171L for changing the opening degree of the second tangential shutters 59L and 59L arranged on the left side of the tang fan case 56 is substantially the same.
As shown in FIG. 3, a controller 165 is connected to the first red shutter opening changing mechanism 171R as an input side.
Further, the first red shutter opening degree changing mechanism 171R is connected to the first red shutters 59R and 59R by wires or the like on the output side.
The first red shutter opening changing mechanism 171R includes a motor, a sector gear, an arm, a link, and the like (not shown) for rotating the first red shutters 59R and 59R.
The rotation of the motor is adjusted by a signal from the controller 165, and the opening degree of the first red shutters 59R and 59R is controlled. That is, the suction amount of the tang fan 26 is adjusted by the suction adjustment means in accordance with the amount of harvested culm and the wet material mode.

As shown in FIG. 3, the chaff sheave opening changing mechanism 170 is input from the information on the amount of waste processed by the threshing unit 12 detected by the angle sensor 60, the wet material mode switch 166, and the sorting adjustment dial 167. Based on the information, the controller 165 receives a signal to drive.
As shown in FIG. 3, a controller 165 is connected to the chaff sheave opening changing mechanism 170 as an input side.
In addition, a chaff sheave 33 is connected to the chaff sheave opening changing mechanism 170 as an output side by a wire or the like.
The chaff sheave opening changing mechanism 170 includes an arm (not shown), a spring that urges the arm, a motor, and the like.
In response to a signal from the controller 165, the motor rotates to operate the urging force of the spring, and the opening degree of the chaff sheave 33 is controlled. That is, the chaff sheave 33 is adjusted according to the amount of cereal and the wet material mode.

The first wind direction plate motor 82 </ b> R and the second wind direction plate motor 82 </ b> L are input from the waste amount information processed by the threshing unit 12 detected by the angle sensor 60, the wet material mode changeover switch 166, and the sorting adjustment dial 167. Based on the information, the controller 165 receives a signal to drive.
As shown in FIG. 4, a controller 165 is connected to the first wind direction plate motor 82R and the second wind direction plate motor 82L as an input side.
The first wind direction plate motor 82R and the second wind direction plate motor 82L are connected to the first wind direction plate 80R and the second wind direction plate 80L, respectively, on the output side.
In response to a signal from the controller 165, the first wind direction plate motor 82R and the second wind direction plate motor 82L rotate to control the directions of the first wind direction plate 80R and the second wind direction plate 80L. That is, the directions of the first wind direction plate 80R and the second wind direction plate 80L are adjusted according to the amount of cereal and the wet material mode.

  The control mechanisms for the opening of the chaff sheave 33, the opening of the first red shutters 59R and 59R, the opening of the second red shutters 59L and 59L, and the direction of the wind direction plates 80L and 80R may be interlocked.

  As described above, the combine 201 in the present embodiment includes the tang fan 26 that performs wind selection so that the cooling air after cooling the engine 52 can be sucked, the means for detecting the amount of the harvested culm, and the suction of the tang fan 26. Suction adjustment means for adjusting the pressure, a red fan case 56 that covers the hot air fan 26 and forms the discharge port 57, and a wind direction change means that changes the direction of the discharge air discharged from the discharge port 57; A controller 165 and a wet material mode switching means are provided, and the suction adjustment means and the wind direction changing means are changed in accordance with the switching of the wet material mode switching means and the amount of the culm, according to the threshing state. And since the ventilation from the Kara fan 26 can be changed, the deterioration of the selection in the selection part 17 can be prevented.

Hereinafter, an example of control of the first red shutter 59R and the second hot shutter 59L will be described with reference to the flowchart shown in FIG.
In this embodiment, it is assumed that a control program and a calculation program, which will be described later, are stored in the storage unit (ROM) of the controller 165.

First, the controller 165 determines whether or not there is a wet material mode from signals from the angle sensor 60 and the wet material mode changeover switch 166 (S10).
Whether the wet material mode changeover switch 166 is selected as the normal mode or the wet material mode is as follows.

  In the normal mode (S31), it is determined to perform an operation to change the opening degree of the first red shutter 141a and the first red shutter 141a (S31).

In the wet material mode (S32), it is determined that only the first red-hot shutter 59R is operated to change the opening, and the second hot-spring shutter 59L is closed and no operation is performed to change the opening. Is determined (S32).
Thus, during wet material threshing operation, if the engine 52 side suction port 55R is opened and the outside air side suction port 55L is closed as shown in FIG. Since the hot air after cooling the air is blown to the sorting unit, the grains themselves, the receiving net, the chaff, etc. are dried, and the moisture in the sorting unit 17 is prevented, and the moisture causes dust to the equipment. It can prevent clogging with grains and grains.

In S20, when the detected value of the angle sensor 60 is equal to or less than the set value (when the circuit is not working, such as during turning or when discharging the haze), the first red shutter 59R is fully opened and the second red shutter 59L is fully closed. Then, as shown in FIG. 5B, only hot air from the engine 52 is sucked into the hot fan 26 and blown.
In this way, when the engine 52 side suction port 55R is opened and the outside air side suction port 55L is closed at the time of non-threshing such as turning and discharging, the hot air of the engine 52 can be supplied to the sorting unit 17, The drying of the sorting unit 17 can be promoted to prevent the sorting efficiency from deteriorating due to the wetness.

In S <b> 52, the opening degree of the first red shutter 59 </ b> R and the second red shutter 59 </ b> L is operated so as to be a size corresponding to the dial value of the sorting adjustment dial 167.
As described above, in the wet material mode, the second Chinese shutter 59L is in a closed state.
In the wet material mode, the aperture ratio of the first red shutter 59R may be larger than that in the normal mode, even if the dial value is the same as the dial adjustment dial 167 in the normal mode. As a result, the amount of intake air from the suction port 55R can be increased by the amount of the shutter of the suction port 55L being fully closed, and the amount of air blown by the entire tang fan 26 can be avoided from being significantly reduced.
In the wet material mode, the opening ratio of the chaff sheave 33 may be larger than that in the normal mode even if the dial value is the same as the dial adjustment dial 167 in the normal mode. Thereby, clogging of the chaff sheave 33 at the time of wet material can be reduced.

When the air is blown from the tang fan 26 in S52, the air blowing direction is adjusted by the air direction changing means. This is because, when the intake port is only from the right side (engine side) as shown in FIG. This is to prevent the accuracy of the deterioration. The disturbance in the wind speed distribution also varies depending on the intake air amount of the red fan 26 (the opening degree of the first red shutter 59R and the second hot shutter 59L), so the direction of the wind direction plate corresponding to the intake air amount is determined. That is, the opening degree of the first red shutters 59R and 59R and the second red shutters 59L and 59L and the direction of the wind direction plates 80L and 80R are linked.
In this way, the wind direction changing means can change the discharge direction from the discharge port 57 in accordance with the suction amount adjusted by the suction amount adjusting means, thereby preventing a large disturbance in the distribution of the selected wind. Can maintain good sorting.

  As described above, the combine 201 in this embodiment includes the tang fan 26 that performs wind selection so that the cooling air after the engine 52 is cooled can be sucked, the means for detecting the amount of harvested culm, and the tang fan 26 Inhalation adjusting means for adjusting the intake, a tang fan case 56 that covers the tang fan 26 and forms the discharge port 57, and a wind direction change means that changes the direction of the discharge air discharged from the discharge port 57. And a controller 165, a wet material mode switching means, and changing the suction mode adjusting means and the wind direction changing means according to the switching of the wet material mode switching means and the amount of culm, Accordingly, since the air blow from the Kara fan 26 can be changed, it is possible to prevent the deterioration of the sorting in the sorting unit 17.

  When wet material threshing is performed, if the engine 52 side suction port 55R is opened and the outside air side suction port 55L is controlled, the hot air after cooling the engine 52 is blown to the sorting unit when the wet material is harvested. As a result, the grain itself, the receiving net, the chaff, etc. will be dried, and the moisture in the sorting unit 17 will be prevented, and the equipment will be clogged with dust, grains, etc. due to the moisture. Can be prevented.

  Further, when the engine 52 side suction port 55R is opened and the outside air side suction port 55L is closed at the time of non-threshing such as turning or discharging, the sorting unit 17 can supply hot air from the engine 52 to the sorting unit 17. The drying of 17 can be accelerated | stimulated and the deterioration of the selection efficiency by wetness can be prevented.

  Further, the wind direction changing means can change the discharge direction from the discharge port 57 in accordance with the suction amount adjusted by the suction amount adjusting means, so that the disturbance of the distribution of the selected wind is prevented, Good sorting can be maintained.

The side view of the combine which concerns on one Example of this invention. Side surface sectional drawing of a threshing part. The schematic diagram which shows the opening degree adjusting mechanism of a red-hot shutter. Top view of a Kara fan. Schematic showing the flow of the sorting wind by a Kara fan. The flowchart which showed one Example of control of a Kara shutter.

Explanation of symbols

17 Sorting unit 26 Chinese fan 33 Chaff sheave 52 Engine 55R Suction port 56 Chinese fan case 57 Discharge port 59R First Chinese shutter 60 Angle sensor 80R First wind direction plate 82R First wind direction plate motor 165 Controller 166 Wet material mode switch 167 Sorting adjustment Dial 170 Chaff sheave opening changing mechanism 171R First Karatsu shutter opening changing mechanism 201 Combine

Claims (4)

A combine that threshs cereals harvested by a reaping unit and performs oscillating and wind sorting on the threshed grain,
A tang fan that performs wind sorting by allowing cooling air after cooling the engine to be inhaled,
Means for detecting the amount of harvested cereal meal;
Inhalation adjusting means for adjusting the inhalation of the Kara fan;
A tang fan case that covers the tang fan and forms its outlet;
Wind direction changing means for changing the direction of the discharge air discharged from the discharge port;
Having control means,
Comprising wet material mode switching means,
The combine characterized by changing the suction adjusting means and the wind direction changing means in accordance with the switching of the wet material mode switching means and the amount of cereal. The suction adjusting means is provided at the engine side inlet and the outside air inlet of the tang fan, and controls to open the engine side inlet and close the outside air inlet during the wet material mode. The combine according to claim 1. The suction adjusting means is provided at the engine side inlet and the outside air side inlet of the tang fan, and the suction amount adjusting means opens the engine side inlet when the amount of the harvested culm becomes less than a set value, The combine according to claim 1, wherein the combiner is controlled to close the inlet. The combine according to claim 1, wherein the wind direction changing unit is capable of changing a discharge direction from the discharge port in accordance with an amount of suction adjusted by the suction adjusting unit.

Images