JPH11275942A - Screening control apparatus of combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of the screening accuracy of grains in the turning of a combine and prevent the damage of the grains and the loss of grains caused by the escape of grains from the machine. SOLUTION: The falling quantity of grains in an automatic thresher 1 is controlled by a mesh-closing plate 42 to adjust the mesh opening of a chaff sieve 23 and a swing sieve 41 placed below the 2nd threshing drum 3 and having an adjustable swinging angle. When the decrease in the feeding amount of culm caused e.g. by the turning of a combine is detected by a sensor, the swing sieve 41 and the mesh closing plate 42 are closed by a controlling means 77 after the lapse of a definite time and then returned to the original mesh-opening after a definite time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine sorting control device and, more particularly, to a control device for controlling the operation of a sorting unit when a self-removing combine or the like travels.

[0002]

2. Description of the Related Art Conventionally, it has been known that the sorting accuracy of grains in an automatic threshing apparatus of a combine depends on the amount of grains (supply amount per unit time) supplied to a sorting section. In the case where the harvesting of the crop is stopped during the circulation of the combine and the supply amount of the kernel supplied to the sorting unit is reduced, unnecessary materials such as straws easily leak through the sorting net together with the kernel. It is known that sorting accuracy deteriorates.

[0003]

In order to avoid such a problem, from the end of cutting the crop to the start of re-cutting, the whole of the combine is rotating (generally about 15 seconds).
A method for stopping the operation of the sorting unit has been proposed. However, in this case, since the operation stop time of the sorting unit becomes long, the grain after threshing is sent again to the threshing device and damaged by so-called second reduction, or the grain is discharged outside the machine. There was a problem that it would.

[0004] Therefore, the present invention is intended to prevent the sorting accuracy of the grain from remarkably deteriorating during the circulation of the combine, and to prevent the damage by the second reduction of the grain, etc. It is an object to provide a control device.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is directed to a combine including a cutting unit, a traveling device, and an automatic threshing device (1). A) a grain leakage control means (40) for controlling the amount of grain leakage in the sorting section, and detecting that the supply of grain culms from the cutting section to the automatic threshing apparatus (1) is stopped. A detecting means (73, 75), and after a fixed time from the detection of the supply stop of the grain culm by the detecting means (73, 75), the opening degree of the grain leakage control means (40) is closed at a predetermined position, Further, a control means (77) for controlling the grain leakage amount control means (40) to open to a predetermined set opening degree a predetermined time after the closing is provided.

[0006]

Based on the above configuration, in the combine, for example, when the supply of grain culm from the cutting unit to the automatic threshing apparatus (1) is stopped during re-circulation, the detecting means (73, 75) detects it. When a signal is issued, the control means (77) having received the signal closes the opening of the grain leakage control means (40) to a predetermined position after a certain period of time has elapsed since the detection of the supply stop of the grain culm, and The amount of grain leakage in the sorting section of the threshing device (1) is suppressed. After a lapse of a predetermined time from the blockage, the control means (77) opens the kernel leak amount control means (40) to a predetermined set opening degree and returns to the original state.

[0007]

As described below, according to the present invention, the timing at which the opening of the grain leakage control means (40) is closed at a predetermined position with the temporary stop of crop harvesting is as follows. It is not at the same time as the detection of the supply stop of the grain stalk by the detection means (73, 75) but after a certain time has elapsed. Therefore, for a certain period of time when the amount of kernels in the sorting unit hardly changes even if the harvesting is stopped, the sorting is performed as usual, and the kernels may be discharged outside the machine or damaged by the second reduction. Can be avoided.

[0008] Further, the blockage of the grain leakage control means (40) is limited to a certain time, and the sorting operation is not stopped for a long time. Accordingly, unnecessary materials such as relatively light straw are discharged outside the machine, but there is little discharge of the grain, and there is an effect that damage due to the second reduction of the grain is small.

Note that the reference numerals in parentheses are for comparison with the drawings, but do not limit the configuration of the present invention.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

First, an automatic threshing apparatus 1 for a self-release type combine
Will be described with reference to FIG.

The automatic threshing apparatus 1 for a self-removing combine is the first
And second handling cylinders 2 and 3, both of which are rotatably supported around a rotation axis along the feeding direction of the grain stalk (the right direction in FIG. 1). These two handle cylinders 2 and 3 have teeth on their outer peripheral surfaces, and at a predetermined distance from the outer peripheral surface, receiving nets 5 and 6 cover substantially lower portions of the handle cylinders 2 and 3. Are arranged respectively. Also,
A feed chain 7 is provided in the vicinity of the first handling cylinder 2 along the rotation axis direction, and the feed chain 7 is provided such that one end thereof is close to one end of a stock transport chain (not shown). The other end is provided so as to be close to one end of the straw chain 8.

On the other hand, an oscillating flow grain plate 20 is provided below the first handling cylinder 2, and a stralac 22 and a chaff sheave 23 are provided below and downstream of the second handling cylinder 3. Are arranged. The oscillating flow plates 20 and 21 and the chaff sheave 23 are configured to be oscillated by a drive source (not shown), and the chaff sheave 23 has a net-like shape so as to leak grains. In addition, below the oscillating flow plate 20, a tang fan 30 that is rotationally driven by a drive source (not shown) is arranged, and above the strok rack 22, a suction fan 55 that is also rotationally driven is arranged. Further, a dust exhaust fan 54 is disposed below the straw rack 22. These fans 30, 54, and 55 generate wind from the tang fan 30 to the suction fan 55 and the dust discharge fan 54 in order to discharge unnecessary substances lighter than the grains to the outside of the automatic threshing apparatus 1.

On the other hand, a first spiral 32 is disposed below the chaff sheave 22, and the first spiral 32 is linked to a fried spiral 31. These spirals 31
It is a shaft-shaped one having helical teeth that are rotationally driven by a drive source (not shown), and transports kernels leaking from the chaff sheave 23 and the like to a Glen tank (not shown). Also,
On the right side of the first spiral 32, a second spiral 35 is disposed in parallel with the spiral 32, and the second spiral 35 is linked with a vertical feed spiral 36 communicating with the second handling cylinder 3 portion. Have been.

Next, the structure of a combine sorting control device according to the present invention will be described.

The grain leakage control means 40 has a swing sheave 41 and a closing plate 42. The swing sheave 41 controls the amount of grain leaking from the second handling cylinder 3 portion. Further, the closing plate 42 closes the upper surface of the chaff sheave 23 by a predetermined amount, and controls the amount of the kernel conveyed from the oscillating flow grain plate 20 and the amount of the kernel flowing down from the swing sheave 41.

Among them, the swing sheave 41 is a louver-like member having a large number of rotatable fins whose upper edges are pivotally supported, and is opened and closed by a motor and a link mechanism (not shown). One end of a wire 47 whose rear end is connected to a potentiometer 44 (hereinafter referred to as a fin potentiometer) is attached to the lower end of one fin of the swing sheave 41.

On the other hand, the closing plate 42 is placed on the upper surface of the chief sheave 23 and has a shape covering the chief sheave 23 when fully closed. The closing plate 42 is closed by the rack 50 attached to the one end edge thereof via the bracket and moved above the chaff sheave 23 and in parallel with the sheave 23 to thereby close the chaff sheave 23 (opening degree).
Is adjusted. Similarly to the fin, the rack 50 has a wire 47 whose rear end is connected to a potentiometer 45 (hereinafter, referred to as a closing potentiometer).
One end is attached.

Above the oscillating flow plate 20, a float sensor 51 whose center is rotatably supported by the entire apparatus.
Are arranged. A roller 51a is rotatably supported at one end of the float sensor 51, and another potentiometer 52 is linked to the other end. The roller 5
1a rolls on the upper surface of the supplied grain layer, and the roller 51a moves up and down according to the amount of the grain (layer thickness of the loaded grain), and the potentiometer 52 detects the amount of the grain. .

As shown in detail in FIG.
The control unit 77a performs control according to the traveling speed of the combine (hereinafter, referred to as the body speed), and the control unit 77b performs control when the combine circulates. In particular,
ON by automatic switch 71 and work equipment switch 72
The signal is turned off, and signals from the grain stalk sensor 73, the pre-processing rotation sensor 75, and the potentiometers 44, 45, 52 are input. Then, the driving of the fin angle adjusting motor 76 and the closing plate adjusting motor 46 is controlled in accordance with the signal.

The control means 77 stores a target value of the fin potentiometer 44 and a target value of the plugging potentiometer 45 corresponding to the vehicle speed. The target value increases in a stepwise manner as the body speed increases, as shown in FIGS. 3 (a) and 3 (b). Specifically, when the machine speed detected by the pre-processing rotation sensor 75 increases to V1, V2, and V3, the target values F0 to F
1, F2, and F3, and the plugging potential 45
Increases from M0 to M1, M2, M3.

Next, the operation of the above embodiment will be described.

[0023] A pre-processing unit (cutting unit) on the left side of FIG.
The crops harvested at the above are first transported to the entrance of the automatic threshing apparatus 1 by a stock transport chain. Thereafter, the culm of the crop is sandwiched by the feed chain 7, and
It is conveyed rightward in FIG. 1 while being bitten by the handling cylinder 2. Thus, the ears are threshed, and the straw that has been threshed is transported to a post-processing device (not shown) by another straw chain 8.

The grains falling on the oscillating flow plate 20 under the threshing action in the first handling cylinder 2 move rightward on the oscillating flow plate 20 in FIG. 1 and leak from the opening of the chaff sheave 23. Drop down to the first spiral 32. Such grains are fed in the axial direction with the rotation of the first spiral 32, and then pushed up along the axis with the rotation of the fried spiral 31. By such transport, the grains are stored in a Glen tank (not shown).

At this time, the strora rack 22 swings by a driving device (not shown), and the tangling fan 30 and the suction fan 55 generate wind in a certain direction as described above. , Sort straw. Unnecessary straw and the like are discharged from the automatic threshing apparatus 1 by the suction fan 55.

On the other hand, if the threshing is not completely completed by the first handling cylinder 2, the spikes and sheaves do not leak from the receiving net 5, so that the top of the catching net 5 is rotated as the first handling cylinder 2 rotates. It moves and is sent to the second handling cylinder 3. These ears and the like are processed again by the second handling cylinder 3, and the processed grains leak down the swing sheave 41 and the chaff sheave 23 and fall into the first spiral 32, and are stored in the Glen tank in the same manner as described above. Can be Ears that have not been processed are the second spiral 35,
By the vertical feed spiral 36, it is returned to the second handling cylinder 3 again.

Next, the operation of the opening control unit 77a based on the vehicle speed will be described with reference to FIG.

First, the operator sets a dial according to the type of crop to be cut (S1). A fixed voltage (for example, 5) is applied to the potentiometer 52 of the float sensor 51.
V) is applied and the output voltage should be greater than 0V and less than the constant voltage. Therefore, when the output voltage of the potentiometer 52 (hereinafter referred to as the float sensor value) indicates the voltage during this period, it is determined that the voltage is normal (S2).

As described above, when the potentiometer 52 is determined to be normal, it is determined whether or not the float sensor value (H) is equal to or greater than the threshold value H1 (S3). The flag is 0, and the fin position of the swing sheave 41 is controlled to F1, F2, F3 according to the traveling speeds V1, V2, V3 of the body (S4), and the closing positions of the closing plate 42 are set to M1, M2. , M3 (S
6, S7, S8). Such control is also performed for a certain period of time (determined by the timer T3) after it is determined that the harvesting of the crop has progressed and the float sensor value has exceeded the threshold value H1 (S5). Here, the threshold value H1 of the float sensor changes according to the dial setting. This is because the optimal amount of grains for sorting accuracy varies depending on the type of crop.

After the float sensor value H exceeds the threshold value H1 for a predetermined time, the timer T3 stops counting (S10), and the rank-up flag is set to "1".
(S11), the opening of the fins and the closing plate is controlled to be slightly open. That is, the traveling speed V1,
According to V2 and V3, the fin position is ranked up and F
2, F3, F4, and the closing position is M
2, M3, M4 (S7, S8,
S9). This control is also maintained for a certain period of time by the timer T4, during which the rank is not increased (S12).

On the other hand, when the potentiometer 52 of the float sensor 51 is out of the predetermined range due to a short circuit or the like (for example, 0
When the voltage V) is output (S2), the fin position and the plugging position are both raised by one step to the open side (S13). An alarm is also issued (S14).

The above-described pre-processing rotation sensor 75 detects the rotation speed of the gear of the pre-processing section (reaching section) in a non-contact manner and outputs a signal. The target values of the potentiometer 44 and the plugging potentiometer 45 are determined. The actual fin opening and the opening of the closing plate are determined by the fin potentio 44 and the closing plug 4.
The control means 77 controls the driving of the motors 46 and 76 so that the signals from the potentiometers 44 and 45 match the target values.

Next, the operation of the combine traveling control unit 77b will be described with reference to FIG.

In order to perform the harvesting operation, the operator sets the control position in accordance with the type of crop, sets the setting dial to a desired mode (S20), and controls the control means to control the amount of grain leakage. The automatic switch 71 is turned on (S21), the work machine clutch 72 is turned on, and power is transmitted to the work machine (S22). In such a case, the grain culm sensor 73 is turned ON (S23), and when the pre-processing rotation sensor 75 detects that the gear of the pre-processing unit is rotating (S2).
4), the timer of the control means 77 does not operate, and control according to the normal machine speed is performed as described above (S26, S2).
7). And at the time of so-called recirculation, where mowing is unnecessary,
When the pre-processing rotation stops, the grain culm sensor 73 and the pre-processing rotation sensor 75 emit signals (S23, S24), and the timer 1 in the control means 77 starts (S25). However, the normal fin control (S26) and the closing control (S27) are continuously performed until a predetermined time (4 to 5 seconds) elapses on the timer 1. However, when a predetermined time (4 to 5 seconds) elapses with the timer 1 (S28,
S29), both the fin and the closing plate move to the closed position (S30), and another timer 2 starts counting (S31). Then, both the fins and the closing plate are kept in the closed position for a predetermined time (4 to 5 seconds) counted by the timer 2, and after the counting by the timer 2 is completed (S32), the normal fin control and the closing control are performed again. Is performed (S26, S27).

The timing at which the opening of the grain leakage control means 40 is closed at a predetermined position due to the temporary stop of cutting of the crop is determined by the grain sensor 73 and the pre-processing rotation sensor 75. Is not the same as when the signal is input to the control means 60, but after a certain time has elapsed. Therefore, during a certain period of time when the amount of kernels in the sorting unit hardly changes even if the harvesting is stopped, the kernels are discharged normally outside the machine because the kernels are sorted as usual. Can be avoided.

Further, the closing of the grain leakage control means 40 is limited to a fixed time, and the sorting operation is not stopped for a long time. Therefore, although unnecessary materials such as relatively light straw are discharged outside the machine, there is an effect that there is almost no discharge of the grain and there is almost no damage due to the second reduction of the grain.

In the above-described embodiment, the target values of the fin potentiometer and the plugging plate potentiometer are changed in three steps in accordance with the body speed. However, the present invention is not limited to this. You may.

In the above embodiment, the swing sheave 41 and the blocking plate 4
2, but either one may be used.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a combine sorting control device according to the present invention.

FIG. 2 is an explanatory diagram of a control unit 77.

FIG. 3A is a diagram illustrating a relationship between a target value of a fin opening degree and a body speed, and FIG. 3B is a diagram illustrating a relationship between a target value of an opening degree of a blocking plate and the body speed.

FIG. 4 is an operation explanatory diagram in a case where the fin opening and the opening of the blocking plate are controlled in accordance with the vehicle speed.

FIG. 5 is an operation explanatory diagram of the control means 77 according to the present invention when the combine circulates.

DESCRIPTION OF SYMBOLS 1 Automatic threshing device 2 First handling cylinder 3 Second handling cylinder 7 Feed chain 20 Oscillating flow grain board 22 Stralac 23 Chaff sheave 40 Grain leakage control means 41 Swing sheave 42 Blocking board 44 Potentiometer 45 Potentiometer 51 Float sensor 73 Detecting means (Grain culm sensor) 75 Detecting means (Pre-processing rotation sensor) 77 Control means 77b Combine circulating control unit

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 7, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Combine sorting control device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine sorting control device and, more particularly, to a control device for controlling the operation of a sorting unit when a self-removing combine or the like travels.

[0002]

2. Description of the Related Art Conventionally, it has been known that the sorting accuracy of grains in an automatic threshing apparatus of a combine depends on the amount of grains (supply amount per unit time) supplied to a sorting section. In the case where the harvesting of the crop is stopped during the circulation of the combine and the supply amount of the kernel supplied to the sorting unit is reduced, unnecessary materials such as straws easily leak through the sorting net together with the kernel. It is known that sorting accuracy deteriorates.

[0003]

In order to avoid such a problem, it is necessary to have a cereal culm conveyed from a pretreatment unit to an automatic threshing machine.
Is detected by the cereal stalk detection means, and the cereal stalk detection means detects
Of grain in the sorting section when the absence of cereal is detected
Unnecessary materials such as straw from the sorting net are shared with the grain.
It is conceivable to prevent the leakage. But this
In the case of, for example, while holding the cereal stem in the pretreatment section
The pre-processing drive stops, and the stalk detection means
When they are caught, cereals are supplied to the automatic threshing machine.
Grain stalk detection means detects grain stalks in spite of not being in a state
However, as a result, the leakage capacity of the sorting unit does not decrease.
Unnecessary materials such as straws leak from the sorting net together with the grains, and
There was a problem that the degree deteriorated .

[0004] Therefore, the present invention is that to prevent the selection system of the grain is significantly deteriorated during combine round row
And this it is an object of the present invention.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has an object to select an automatic threshing apparatus (1).
Control means for controlling the amount of grain leakage
In a combine provided with (40), the pre-processing unit
To detect the presence or absence of culms transported to the automatic threshing device (1)
(73) detecting the operating state of the pre-processing unit
And a pre-processing rotation detecting means (75) for detecting the grain stalk.
Whether the delivery means (73) detects the absence of cereal stalks in the pretreatment section,
Alternatively, the preprocessing rotation detecting means (75) stops the operation of the preprocessing unit.
Outage is detected, or based on either one
The degree of opening of the grain leakage control means (40) to a predetermined position.
It is characterized in that it is configured so as to close up .

[0006]

Based on the above configuration, in the combine, for example, when the supply of the cereal stalk from the pre-processing unit to the automatic threshing apparatus (1) is stopped at the time of circulating , the cereal stalk detection means (73) performs the pre-processing.
To detect the absence of culm in the part, or
Opening stage (75) issues a Do to a signal for detecting the operation stop of the pre-processing unit, the control unit having received such a signal (77) cereal <br/> particle Moshita amount control means (40) Is closed to a predetermined position, and the amount of grain leakage in the sorting section of the automatic threshing apparatus (1) is suppressed .

[0007]

As follows description, according to the present invention, before according to the present invention
The suspension of the supply of grain stalks from the processing unit to the automatic threshing equipment
Output means (73) and preprocessing rotation detection means (75).
And only the cereal stem detection means (73)
The stalks to the automatic threshing device
The cereal stalk detection means is cereal stalk even though it is not supplied
Is detected, and as a result, the leakage capacity of the
Unnecessary materials such as straws leak from the sorting net along with the grains.
It is possible to perform good sorting without the problem of
Wear.

[000 8] The reference numerals in the parentheses, but is intended to control with the drawings are not intended to any way limit the arrangement of the present invention.

[000 9 ]

Embodiments of the present invention will be described below with reference to the drawings.

[001 0] First, automatic threshing apparatus 1 of the own de form Combine
Will be described with reference to FIG.

[001 1] automatic threshing apparatus 1 of the own de forms combine the first
And second handling cylinders 2 and 3, both of which are rotatably supported around a rotation axis along the feeding direction of the grain stalk (the right direction in FIG. 1). These two handle cylinders 2 and 3 have teeth on their outer peripheral surfaces, and at a predetermined distance from the outer peripheral surface, receiving nets 5 and 6 cover substantially lower portions of the handle cylinders 2 and 3. Are arranged respectively. Also,
A feed chain 7 is provided in the vicinity of the first handling cylinder 2 along the rotation axis direction, and the feed chain 7 is provided such that one end thereof is close to one end of a stock transport chain (not shown). The other end is provided so as to be close to one end of the straw chain 8.

[001 2] On the other hand, said to lower the first threshing drum 2, the oscillating flow Kokuban 20 is provided, also the second threshing drum 3 of the lower and stroke racks 22 and chaff sieve 23 on the downstream side And so on. Rocking dynamic flow Kokuban 20, Chi Yafushi <br/> over Bed 23 is configured to be swung by a driving source (not shown), chaff sieve 23 has a net-like shape in order to Moshita kernels. In addition, below the oscillating flow grain plate 20,
Karami fan 30 rotationally driven by a drive source (not shown)
A suction fan 55, which is also driven to rotate, is disposed above the straw rack 22, and a dust discharge fan 54 is disposed below the straw rack 22. These fans 30, 54, and 55 are provided with a karami fan 3 to discharge unnecessary substances lighter than grains to the outside of the automatic threshing apparatus 1.
A wind is generated in the direction from 0 to the suction fan 55 and the exhaust fan 54.

[001 3] On the other hand, below the chaff sieve 23 is arranged that flies spiral 32, AgeKoku helix 31 is linked to the number 1 helical 32. These spirals 31
It is a shaft-shaped one having helical teeth that are rotationally driven by a drive source (not shown), and transports kernels leaking from the chaff sheave 23 and the like to a Glen tank (not shown). Also,
On the right side of the No. 1 helical 32, the spiral 32 and disposed in parallel to the No. 2 helix 35, is on the 2nd helix 35 is longitudinal feed spiral 36 which communicates with the second handling drum 3 moiety is linked ing.

[001 4] will now be described the structure of the combine sorting control device according to the present invention.

[001 5] grain Moshita amount control means 40 has a swing sieve 41 and the eye closing plate 42, the swing sieve 41, controls the amount of grain to be Moshita from the second threshing drum 3 parts In addition, the closing plate 42 closes the upper surface of the chaff sheave 23 by a predetermined amount, and controls the leakage amount of the kernel conveyed from the oscillating flow grain plate 20 and the kernel flowing down from the swing sheave 41.

[001 6] Among them, swing sieve 41 is intended top edge the pivoted rotatable fin louvers like made provided a number, is opened and closed by a motor (not shown) and a link mechanism. One end of a wire 47 whose rear end is connected to a potentiometer 44 (hereinafter referred to as a fin potentiometer) is attached to the lower end of one fin of the swing sheave 41.

[001 7] On the other hand, the eye closing plate 42, the being placed on the upper surface of the chaff sieve 23, the fully closed state is of a shape that covers the chaff sieve 23. The closing plate 42 is closed by the rack 50 attached to the one end edge thereof via the bracket and moved above the chaff sheave 23 and in parallel with the sheave 23 to thereby close the chaff sheave 23 (opening degree).
Is adjusted. Similarly to the fin, the rack 50 has a wire 47 whose rear end is connected to a potentiometer 45 (hereinafter, referred to as a closing potentiometer).
One end is attached.

[001 8] Above the oscillating flow Kokuban 20, float sensor 51 the central portion is rotatably supported to the entire device
Are arranged. A roller 51a is rotatably supported at one end of the float sensor 51, and another potentiometer 52 is linked to the other end. The roller 5
1a rolls on the upper surface of the supplied grain layer, and the roller 51a moves up and down according to the amount of the grain (layer thickness of the loaded grain), and the potentiometer 52 detects the amount of the grain. .

[00 19] controlling means 77, as shown in detail in FIG. 2,
The control unit 77a performs control according to the traveling speed of the combine (hereinafter, referred to as the body speed), and the control unit 77b performs control when the combine circulates. In particular,
ON by automatic switch 71 and work equipment switch 72
-Turned off, the cereal stalk sensor (grain stalk detection hand
Stage) 73, pre-processing rotation sensor (pre-processing rotation detecting means) 7
5. Signals from the potentiometers 44, 45 and 52 are input. Then, the fin angle adjusting motor 76 and the closing plate adjusting motor 4
6 is drive-controlled. Grain stalk sensor 73 automatically from pre-processing unit
It is a sensor that detects the presence or absence of the grain culm transported to the threshing device,
It is provided in the preprocessing unit.

[002 0] The control unit 77, the target value of the target value and the eye closing potentiometer 45 fins potentiometer 44 in response to the aircraft speed is memory. The target value increases in a stepwise manner as the body speed increases, as shown in FIGS. 3 (a) and 3 (b). Specifically, when the machine speed detected by the pre-processing rotation sensor 75 increases to V1, V2, and V3, the target values F0 to F
1, F2, and F3, and the plugging potential 45
Increases from M0 to M1, M2, M3.

[002 1] Next, a description will be given of the operation of the above embodiment.

[002 2] pre-processing unit to the left direction in FIG. 1 (not shown)
The crops harvested at the above are first transported to the entrance of the automatic threshing apparatus 1 by a stock transport chain. Thereafter, the culm of the crop is sandwiched by the feed chain 7, and
It is conveyed rightward in FIG. 1 while being bitten by the handling cylinder 2. Thus, the ears are threshed, and the straw that has been threshed is transported to a post-processing device (not shown) by another straw chain 8.

[002 3] grains fell on the swing flow Kokuban 20 receives the threshing action at the first thresher 2, from the opening of the move rocking flow Kokuban 20 above in FIG. 1 the right chaff sieve 23 It leaks and falls toward the first spiral 32. Such grains are fed in the axial direction with the rotation of the first spiral 32, and then pushed up along the axis with the rotation of the fried spiral 31. By such transport, the grains are stored in a Glen tank (not shown).

[002 4] In this case, straw rack 22 is a rocking motion by a drive device (not shown), and because Tang viewed fan 30 and the suction fan 55 for generating the wind as described above in a predetermined direction, completely grain, Sort waste and straw. Unnecessary straw and the like are discharged from the automatic threshing apparatus 1 by the suction fan 55.

[002 5] On the other hand, the ears and the like not finished completely threshing by the first thresher 2, over the companion not受網5 the rotation of the first threshing drum 2 because no Moshita from the受網5 It moves and is sent to the second handling cylinder 3. Then, these ears and the like are processed again by the second handling cylinder 3, and the processed grain leaks through the swing sheave 41 and the chaff sheave 23 and the first spiral 3
2 and stored in the Glen tank as before. Ears that have not been processed are returned to the second handling cylinder 3 again by the second spiral 35 and the vertical feed spiral 36.

[002 6] Next, the operation of the opening control unit 77a according to the machine body speed, will be described with reference to FIG.

[002 7] First, the operator sets the dial according to the type of crop reap (S1). A fixed voltage (for example, 5) is applied to the potentiometer 52 of the float sensor 51.
V) is applied and the output voltage should be greater than 0V and less than the constant voltage. Therefore, when the output voltage of the potentiometer 52 (hereinafter referred to as the float sensor value) indicates the voltage during this period, it is determined that the voltage is normal (S2).

[002 8] Thus, when the potentiometer 52 is determined to be normal, float sensor value (H) is determined whether the threshold value H1 or (S3), if the threshold value H1 or less, Rank The up flag is 0, and the fin position of the swing sheave 41 is controlled to F1, F2, F3 according to the traveling speeds V1, V2, V3 of the aircraft (S4), and the closing position of the closing plate 42 is set to M1, Control to M2 and M3 (S
6, S7, S8). Such control is also performed for a certain period of time (determined by the timer T3) after it is determined that the harvesting of the crop has progressed and the float sensor value has exceeded the threshold value H1 (S5). Here, the threshold value H1 of the float sensor changes according to the dial setting. This is because the optimal amount of grains for sorting accuracy varies depending on the type of crop.

[00 29] Thus the float value H after the elapse of a predetermined time exceeds the threshold value H1 is completed count of the timer T3 is (S10), ranking up flag is "1"
(S11), the opening of the fins and the closing plate is controlled to be slightly open. That is, the traveling speed V1,
According to V2 and V3, the fin position is ranked up and F
2, F3, F4, and the closing position is M
2, M3, M4 (S7, S8,
S9). This control is also maintained for a certain period of time by the timer T4, during which the rank is not increased (S12).

[003 0] Meanwhile, the predetermined range potentiometer 52 of the float sensor 51 by short circuit or the like (e.g., 0
When the voltage V) is output (S2), the fin position and the plugging position are both raised by one step to the open side (S13). An alarm is also issued (S14).

[003 1] Before the above-described process the rotation sensor 75, pre-treatment
Non-contact detection of the rotation speed of the gear of the section and outputs a signal,
The control means 77 reads the signal as the vehicle speed and determines the target values of the fin potentiometer 44 and the plugging potentiometer 45. Since the actual fin opening degree and the opening degree of the closing plate are obtained by the signals from the fin potentiometer 44 and the closing potentiometer 45, the control means 77 controls the respective signals so that the signals from the potentiometers 44 and 45 coincide with the target values. The drive of the motors 46 and 76 is controlled.

[003 2] it will now be described with reference to FIG. 5 the effect of combined time line when the control unit 77b.

When the [003 3] cutting work, the operator, the setting dial performs control position set according to the type of crop to the desired mode (S20), control means for controlling said grain Moshita amount The automatic switch 71 is turned "ON" (S21), and the work machine clutch 72 is turned "on" to transmit power to the work machine (S22). In such a case, the grain culm sensor 73 is turned ON (S23), and when the pre-processing rotation sensor 75 detects that the gear of the pre-processing unit is rotating (S2).
4), the timer of the control means 77 does not operate, and control according to the normal machine speed is performed as described above (S26, S2).
7). And at the time of so-called recirculation, where mowing is unnecessary,
The supply of cereal culm from the preprocessing unit to the automatic threshing device 1 has been stopped.
In this case, the grain culm sensor 73 or the pre-processing rotation sensor 75
Detecting this, that is, the grain culm sensor 73
Detecting the absence of cereal stems, or pre-processing rotation sensor 75
Detects that the rotation of the gear in the preprocessing unit has stopped
When the signal is issued (S23, S24), the control means 7
The timer 1 in 7 starts (S25). However, the normal fin control (S26) and the closing control (S2) are performed until a predetermined time (4 to 5 seconds) elapses with the timer 1.
7) is continuously performed. However, when a predetermined time (4 to 5 seconds) elapses in the timer 1 (S28, S2
9) Both the fin and the closing plate move to the closed position (S30), and another timer 2 starts counting (S31). Then, both the fins and the closing plate are kept in the closed position for a predetermined time (4 to 5 seconds) counted by the timer 2, and after the counting by the timer 2 is completed (S32), the normal fin control and the closing control are performed again. Is performed (S26, S27).

[003 4] Thus, the timing for closing the opening of it accompanied a temporary suspension of the cutting of the crop grain Moshita amount control means 40 to a predetermined position, the culms sensor 73 and the preprocessing rotation sensor 75 Is not at the same time as the signal from the controller 60 is input to the control means 60, but after a certain time has elapsed. Therefore, during a certain period of time when the amount of kernels in the sorting unit hardly changes even if the harvesting is stopped, the kernels are discharged normally outside the machine because the kernels are sorted as usual. Can be avoided.

[003 5] In addition, the closing of the grain Moshita amount control means 40 is limited to a certain time, is nor stopped longer sorting work. Therefore, although unnecessary materials such as relatively light straw are discharged outside the machine, there is an effect that there is almost no discharge of the grain and there is almost no damage due to the second reduction of the grain.

[003 6] In the above embodiment, changing the target value of the potentiometer fins potentiometer and eye closing plate stepwise in three stages in accordance with the aircraft speed, not necessarily limited to this, more finely change May be.

[003 7] In addition, as the grain Moshita amount control means 40 in the above embodiment, the swing sieve 41 and the eye closing plate 4
2, but either one may be used.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a combine sorting control device according to the present invention.

FIG. 2 is an explanatory diagram of a control unit 77.

FIG. 3A is a diagram illustrating a relationship between a target value of a fin opening degree and a body speed, and FIG. 3B is a diagram illustrating a relationship between a target value of an opening degree of a blocking plate and the body speed.

FIG. 4 is an operation explanatory diagram in a case where the fin opening and the opening of the blocking plate are controlled in accordance with the vehicle speed.

FIG. 5 is an operation explanatory diagram of the control means 77 according to the present invention when the combine circulates.

DESCRIPTION OF SYMBOLS 1 Automatic threshing device 2 First handling cylinder 3 Second handling cylinder 7 Feed chain 20 Oscillating flow grain board 22 Stralac 23 Chaff sheave 40 Grain leakage control means 41 Swing sheave 42 Closing board 44 Potentiometer (Fin potentiometer) 45 Potentiometer ( Clogging potentiometer) 51 Float sensor 73 Grain stalk detecting means ( Grain stalk sensor) 75 Pre-processing rotation detecting means (Pre-processing rotation sensor) 77 Control means 77b Combine circulating control section

Claims (1)

[Claims] 1. A combine comprising a cutting unit, a traveling device, and an automatic threshing device, wherein: a grain leakage amount control means for controlling a leakage amount of grains in a sorting unit of the automatic threshing device; A detecting means for detecting that the supply of the grain stalk to the automatic threshing apparatus has been stopped, and after a fixed time from the detection of the supply stop of the grain stalk by the detecting means,
Control means for closing the opening degree of the grain leakage control means at a predetermined position, and further controlling the grain leakage control means to open to a predetermined set opening after a predetermined time from the closing; A combine sorting control device, comprising: