JPH08275670A - Grading controller for combined harvester - Google Patents

Abstract

PURPOSE: To provide the optimal grading conditions corresponding to a change in the amount of a sensor for the amount of the threshing treatment according to the interlocking control of a chaff sieve with a fan mill by constituting a grading controller for a combined harvester so as to control the angle of the chaff fins constituting a chaff sieve based on the sensed value of the sensor for the amount of the threshing treatment and further an increase and a decrease in the air flow rate of the fan mill for supplying a grading wind interlocking with the regulation of the angle of the chaff fins based on the value sensed with the sensor for the amount of the threshing treatment. CONSTITUTION: This grading controller for a combined harvester is obtained by installing a sensor for the amount of threshing treatment capable of sensing the amount of the threshing treatment after the threshing with a thresher, regulating the angle of chaff fins 20a constituting a chaff sieve based on a sensed value of zero amount of threshing treatment sensed by the sensor for the amount of the threshing treatment and further controlling the air flow rate of a fan mill 33 interlocking with the angle control of the chaff fins 20a based on the value sensed with the sensor for the amount of the threshing treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for controlling the inclination of chaff of a sorting device according to the amount of threshing treatment and improving the sorting performance of grain.

[0002]

2. Description of the Related Art Conventionally, a technique for changing the inclination of chaff according to the threshing treatment amount has been publicly known. However, in the prior art, it was merely configured to mechanically adjust the angle of the chaff fin via the link or the arm.

[0003]

SUMMARY OF THE INVENTION The present invention controls the angle of chaff fins forming a chaff sheave based on the detection value of the threshing throughput sensor, and at the same time, detects the chaff fin based on the detection value of the same threshing throughput sensor. It is configured to control the increase and decrease of the air volume of Kara Tsubo that sends the selection wind in conjunction with the angle adjustment of the, and the optimal control that corresponds to the change in the amount of the threshing throughput sensor by the interlocking control of the chaff sieve and Kara Tsubasa. Configured to provide status

[0004]

The object of the present invention is as described above, and the structure for achieving the object will be described. After threshing by the threshing device, a threshing throughput sensor 19 for detecting the threshing throughput is provided, and based on the detection value of the threshing throughput detected by the threshing throughput sensor 19, the angle of the chaff fin 20a constituting the chaff sheave 20 is controlled. Further, the detection value of the threshing amount sensor 19 is also configured to control the air flow rate of the Karato 33 in cooperation with the angle control of the chaff fin 20a.

[0005]

The object and structure of the present invention are as described above, and the structure of the embodiment shown in the accompanying drawings will be described below. 1 is an overall side view of the combine, FIG. 2 is a side cross-sectional view of the threshing selection unit, FIG. 3 is a rear view showing a threshing amount sensor 19 provided in the straw chain, and FIG. 4 is a side view of Kara-mou and chaff sheave. FIG. 5 is a diagram showing the relationship between the threshing treatment amount such as straw and the target angle of the chaff sheave, and FIGS. 6, 7, 8, and 9 are control flowchart diagrams.

This will be described with reference to FIGS. 1 and 2. Threshing device 4
Raising further forward, the cutting device 1 is projected, and the raising
The grain culm cut by the reaping device 1 is conveyed upward and rearward by the conveying device 2, the root of the stock is inherited by the feed chain 3, is sandwiched and conveyed backward, and the tip portion is the threshing device 4
It is shed during passage through the inside. The slaughtered straw is conveyed backward by the straw chain 5 and is conveyed onto the straw processing device 6. The straw that has been cut by the straw processing device 6 is released to the field scene. As shown in FIG. 3, a support rod 11 of the pinching bar 10 is urged upward by a spring 12 in the pinching part of the straw chain 5. The support rod 11
A stay 13 is brought into contact with the lower end of the stay 13, and the stay 13 is fixed to a pivot shaft 14, and an arm 15 is fixed to the pivot shaft 14. A spring 17 is interposed between the arm 15 and a frame 16 that supports the pivot shaft 14,
Is biased to rotate upward. Also arm 15
Pin 15a is projected at the tip, and a threshing amount sensor 1 including a potentiometer, a rotary encoder, etc.
9 of the arm 19a. Therefore, when the straw is passed, the support rod 11 is lowered according to the amount of the straw, and the arm 15 is also rotated according to the corresponding amount, and the rotation is detected by the threshing processing amount sensor 19, The value is proportional to the amount of threshing processing such as straw.

Among the rice grains, straw debris, etc. shredded by the handling barrel 7 in the threshing device 4, the rice grains etc. which have leaked through the crimp net 8 are
Those falling from the grain plate onto the swing sorting device 9 and not leaking through the crimp net 8 are sorted by the straw rack 21,
Straw chips and shavings are processed again by the vertical processing cylinder 22, the straw chips are discharged to the outside of the machine, and the second object falls onto the second conveyor 23 and is returned to the parallel processing cylinder 24 and processed again. It The fine granules that have leaked from the chaff sheave 20 of the rocking and sorting device 9 drop onto the conveyor 25 first, and are conveyed and stored in the Glen tank 26. The chaff sheave 20
As shown in FIG. 4, the chaff fins 20a, 20a, ...
The upper part of the circle is pivotally supported on the fuselage side, the lower end is pivotally supported by the connecting rod 29, and the bell crank 30 is fixed to the upper shaft of the chaff fin 20a at one end. A spring 31 is locked to the end of the arm 30a on one side of the bell crank 30, and a connecting wire 32 is locked to the arm 30b on the other side. The other end of the connecting wire 32 has an arm 38 for rotating a shutter 35 for changing the size of the suction port 34 of the Karako 33.
Is linked to A shutter 35 is attached to the arm 38.
Is connected to a spring 36 for urging the opening.

A fan gear 37 is pivotally supported in the middle of the connecting wire 32, and the fan gear 37 is a control motor 40.
Driven by the gear box 41, and the fan-shaped gear 37
When the pin 37a protruding from the side surface of the chaff fin 20a is brought into contact with the arm of the angle sensor 42, the amount of rotation of the pin 37a can be detected and the opening degree of the chaff fin 20a can be detected.

In the above-mentioned structure, the control which is the main part of the present invention will be described with reference to the flow charts of FIG. 6, FIG. 7, FIG. 8 and FIG. In the flowchart, the FON flag of 1 indicates that the control motor 40 has been driven, and the FON flag of 0 indicates that the control motor 40 has not been driven. The FOFF flag being 1 means that it is within the time T ₄ which is the pulse OFF time during the control by the pulse driving, and the FOFF flag being 0 means that the stop of the control motor 40 is pulse OFF. It indicates that the motor is not stopped during the time.

First, a timer T for determining the control interval
_{When 1} has passed the set time t ₁ (S1), the timer T
₁ is reset (S2) and the timer T ₁ starts counting (S3). Next, the detection value V _W of the threshing throughput sensor 19 is detected to detect the threshing throughput of straw etc. (S4), and the value V _C of the chaff fin 20a detected by the angle sensor 42 is taken as V _KC. (S5), the value V _C is read (S6). If V _W · V _C is 0, that is, if there is no signal from the threshing amount sensor 19 and the angle sensor 42 (S7), the alarm lamp is made to blink (S10) to issue an alarm. Further, the above-mentioned feed-out value V _W
If V _C is not 0, it is judged whether or not the FON flag is 1 (S8), and if it is not 1, it is 1 if the control motor 40 is operating to rotate the chaff fin 20a. , V _C −V _KC is calculated, and if the absolute value is 0 or more, it is understood that it is operating. If it is 0, it means that the control motor 40 is broken, and the alarm lamp blinks to issue an alarm. (S10). If it is 0 or more, proceed to.

Further, it is judged whether or not the automatic switch is ON (S11), and even if the automatic switch is ON, if the work clutch is OFF (S12), it is judged to be a manual operation, and the alarm lamp is turned off ( S13), timer T
₂ , T ₃ , T ₄ are reset and the FOFF flag is set to 0 (S14). Then, by manually detecting the voltage V _H of the adjustment volume when setting the angle (S15), the target value V _B is calculated by calculating k ₁ V _H + α in order to match the value of the angle sensor 42 of the chaff fin 20a. (S16), it is determined whether the chaff angle detection value V _C is within the range of the target value V _B ± ΔV ₁ (S17). If it is out of the range, the control motor 40 is driven so as to approach the target value (S18), and the FON flag indicating that the control motor 40 is driven is set to 1
Then (S19), the process returns to the original. If it is within the range of the target value V _B ± ΔV ₁ , the drive motor 40 is stopped (S2
0), F indicating that the control motor 40 is stopped
The ON flag is set to 0 (S21) and the process returns to the original.

If the automatic switch is ON and the work clutch is ON, the alarm lamp is turned on (S22), the automatic control is displayed, and it is determined whether n = 0 (S23).
If 0, the detection value V _W of the threshing throughput sensor 19 is set to V _K1
(S24), and n = 1 (S25). Then, in order to obtain the average of the threshing throughput sensor 19, the value is set to V _a (S34), the control described later is performed, and when the flow is repeated from the beginning again (S23), n is 1 Since it has been input (S26), the detection value V _W of the threshing throughput sensor 19 at that time is set to V _K2 (S27), n
= 2 (S28), the average of the previous V _K1 and V _K2 is set to V _a . It is similarly repeated (S29) to (S33),
The average of the maximum four times is obtained, and thereafter, n is updated so that the average of the latest four times is obtained (S34).

Next, use the selection dial to select whether it is rice dry material.
(S35), if it is rice dry wood, determine the rice dry wood
A few k_2sK₂(S36), chaff angle in case of dry rice
Upper limit value V_maxsTo V_maxAnd the lower limit value V_minsTo V_minWhen
However, in the case of dry rice, the chaff sheave 20 is closed after the mowing is finished.
Time t_2sT₂(S37). In the present invention
At the fixed time t₂Is the threshing throughput sensor 19
Is the threshold value V for threshing processing amount 0_YLower than
If it happens, the control state before that is maintained for a certain period of time.
This is the time corresponding to the fixed time when
t₂To be changed with rice dry wood, wheat and rice wet wood.
-ing If the selection dial is wheat (S38)
Is the constant k of wheat as described above._2mK₂And (S39),
Upper limit value of chaff angle for wheat V_maxmTo V_maxAnd the lower limit
Value V_minmTo V_minAnd chaff after harvesting for wheat
Time t until the sheave 20 closes _2mT₂(S4
0). Similarly, when the selection dial is other than that, in this embodiment
Is the constant k for rice damp material _2iK₂And (S41),
Upper limit of chaff angle V_maxiTo V_maxAnd the lower limit value V_miniTo
V_minUntil the chaff sheave 20 is closed after cutting.
At time t_2iT₂(S42).

Then, the value V _H of the volume when the operator manually makes a fine adjustment is read (S43), the chaff angle target value V _B is calculated from the value (S44), and the chaff angle detection value V _c is the target value. It is determined whether or not it is within the range of V _B ± ΔV ₂ (S45). If it is within the target range, it is not necessary to drive the control motor 40 to rotate the chaff fin 20a. Therefore, the control motor 40 is stopped (S46) and the control motor 40 is pulse-driven to drive the chaff fin 20a. The timer T ₃ which is the ON time and the T ₄ which is the OFF time when rotating are reset, and the FOFF flag is set to 0 (S47). If the detected chaff angle value V _C is outside the upper limit value V _MAX and the lower limit value V _MIN of the chaff angle, that is, outside the control range (S48), control cannot be performed, so the control motor 40 is stopped as described above. Then (S4
6) The timers T ₃ and T ₄ are reset and the FOFF flag is set to 0 (S47).

Next, if it is within the control range, the average value V of the threshing throughput sensor 19 for detecting the threshing throughput such as straw.
_{If a} is judged to be smaller than or equal to the threshold value V _{Y in} the state in which the threshing processing amount of straw etc. has almost disappeared (S49),
If this threshold value V _Y is exceeded, this will be
It is determined that the culms of lost state as at the end reaper, the counting of time T ₂ (S50) started, said time T ₂ above for a predetermined time whether or exceeds a predetermined time t ₂
The determination is made by comparing with (S51).

The average value V of the threshing throughput sensor 19
The state before that is maintained until a exceeds a certain time t ₂ after _a becomes lower than the threshold value V _Y. In this case, unlike the decrease in the threshing treatment amount such as straw by the normal control of the mowing state, it is the rapid decrease in the threshing treatment amount such as straw at the end of the field or at the end of mowing. However, if the chaff fin 20a is closed at once in accordance with the control command, there occurs a problem that a loss of fine grains from the third opening occurs, so that the state before the predetermined time t ₂ is maintained. That is, by returning to again and spinning on the flowchart, the previous state is maintained for a certain period of time. If, decrease the time T ₂ of the detected value of the threshing process quantity sensor 19, exceeds the predetermined time t ₂ stops counting of time T _2, is to reset (S52).

If it is judged that the straw is not exhausted at once, such as when the field is traveling around the field or when the mowing is completed (S
49), and reset the detection time T ₂ (S5
2), proceed to. First, in FOFF
It is determined whether or not the flag is 1 (S53), and when the FOFF flag is 1, it is the state of the stop pulse during pulse control, so the process proceeds as it is and the stop pulse time t
Wait for ₄ to pass. If the FOFF flag is not 1, the control motor 40 is driven to the target value side (S
54), FON indicating that the control motor 40 is driven
The flag is set to 1 (S55), and counting of T ₃ is started (S56). T ₃ is a pulse control motor drive time, and the control motor 40 is rotated only during this period.

The motor drive time t ₃ is set to two set times t ₃ and t ₃ '. The absolute value of the difference between the chaff angle detection value V _C and the chaff angle target value V _B is the set value Δ.
It is determined whether or not it is larger than V ₃ (S57), and if it is larger, T ₃ is driven by using the longer drive time t ₃ and it is determined whether or not the longer drive time t ₃ has elapsed (S5).
8) If it has not elapsed, go to, and if it has elapsed, stop the control motor 40 (S60). Similarly, the absolute value of the difference between the chaff angle feeding value V _C and the chaff angle target value V _B is the set value Δ.
If it is smaller than V ₃ , the shorter motor drive time t
_{Use 3} '.

Then, it is judged whether or not the motor drive time t ₃ 'has elapsed (S59).
If it has passed, the control motor 40 is stopped (S6).
0). Then, since the motor is stopped in the stop pulse state after driving the control motor 40, FOFF
The flag is set to 1, the control motor 40 is because with each other to stop, the FON flag to 0 (S61), resets the timer T ₃ (S62), the count start timer T ₄ (S63). The timer T ₄ is the time of the stop pulse during pulse driving, and after the time of the stop pulse has elapsed (S65), the FOFF flag is set to 0 and the process returns. If T ₄ has not passed t ₄ (S64), the FOFF flag remains 1, and the process returns to the original state.

In FIG. 5, the threshing throughput sensor 19
The value after the control of the angle sensor 42 of the chaff fin 20a is shown for the detected value of. Among the polygonal lines, in the case of the rice damp material, the "open" state is maintained to some extent even if the flow rate decreases, but when the remaining amount decreases, the operation is performed in the "closed" direction. . In the case of dry rice and barley, it is closed as the flow rate decreases, but if it is closed too much, the grain will not pass, so the closing condition is changed from the middle. Since wheat is slippery, the angle is made small, but in the case of paddy, it is difficult to slip, and therefore the angle is made large and slippery with respect to the detection value of the threshing amount sensor 19. In particular, the angle should be made steeper when there is a high amount of humidity such as mowing before the appropriate period of mowing and mowing in the morning or after rain.

[0021]

The present invention having the above-described structure has the following effects. After threshing by the threshing device, a threshing throughput sensor 19 for detecting the threshing throughput is provided, and the threshing throughput detected by the threshing throughput sensor 19 is 0.
The angle of the chaff fins 20a constituting the chaff sheave 20 is controlled based on the detection value of the chaff sheave 20, and the detection value of the threshing treatment amount sensor 19 is also interlocked with the angle control of the chaff fins 20a to control the air flow rate of the Karako 33. Since it was configured in this way, based on the detection value of the threshing throughput sensor 19, while controlling the angle of the chaff fin 20a constituting the chaff sheave 20, based on the detection value of the same threshing throughput sensor 19, the angle adjustment of the chaff fin 20a and In conjunction with this, it is also configured to control the increase and decrease in the air volume of the Kara-mino 33 that sends the sorting air, and by the interlocking control of the chaff sheave 20 and the Kara-mino 33, the optimal sorting corresponding to the change in the amount of the threshing throughput sensor 19. It is possible to obtain the state.

Further, when the chaff fin 20a and the Karako 33 are separately and independently controlled, the sorting state cannot be balanced. However, like the present invention, the chaff fin 20a and the chaff fin 20a are controlled. By interlocking the control of the air flow rate of the Karako 33, it is possible to always obtain a balanced selection state in the control state.

[Brief description of drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a side sectional view of a threshing selection unit.

[Fig. 3] Threshing amount sensor 19 provided in the straw chain
The rear view which shows the part.

FIG. 4 is a partial cross-sectional side view of the Karato and chaff sheaves.

FIG. 5 is a diagram showing a relationship between a threshing processing amount such as straw and a target angle of chaff sheave.

FIG. 6 is a control flowchart.

FIG. 7 is a control flowchart.

FIG. 8 is a control flowchart.

FIG. 9 is a control flowchart.

[Explanation of symbols]

 19 Threshing throughput sensor 20 Chaf sheave 20a Chaff fin 33 Karan 40 Control motor

Claims (1)

[Claims] 1. A threshing processing amount sensor 19 for detecting a threshing processing amount is provided after threshing by a threshing device, and based on a detection value of the threshing processing amount detected by the threshing processing amount sensor 19,
The angle of the chaff fin 20a constituting the chaff sheave 20 is controlled, and further, the detection value by the threshing processing amount sensor 19 is interlocked with the angle control of the chaff fin 20a,
A combine selection control device characterized in that it is also configured to control the air flow rate of the Kara no 33.