JP2761475B2 - Combine sorting control device - Google Patents

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 the chaff fins of a chaff sheave of a sorting device in accordance with the threshing amount and improving the sorting performance of grains.

[0002]

2. Description of the Related Art Conventionally, chaff has been used in accordance with the threshing amount.
The technique of changing the inclination has been known. I
However, the conventional technology uses the signal from the threshing throughput sensor.
In response to controlling the angle of chaff fins
The threshing amount sensor
Despite the signal change from
Is a technology to maintain the angle of chaff fins before it
There was no. Conventionally, the object to be harvested is rice.
The chaff that constitutes the chaff sieve in the case of
There is no control to change the size of the fin adjustment angle.
It was.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a threshing process.
In response to the signal from the sensor, the angle of the chaff fin is
In the configuration for controlling, when the aircraft circulates at the field end,
Despite the change in the signal from the threshing throughput sensor
The angle of the chaff fin for a certain period of time
Condition, and the sorting performance that occurs during
It is to suppress the bottom. In the case of wheat, the surface is smooth.
It is easy to slip compared to paddy, so paddy fields
In the same way, if you adjust the angle of chaff fins,
Suddenly falls from the chaff sheave, and the sorting control
It becomes impossible. The present invention relates to a case where wheat is treated.
And when processing paddy, switch automatic control to the same
Chafffi
In this case, the angles of the buttons are made to be different from each other.

[0004]

The object of the present invention is as described above, and a configuration for achieving the object will be described. threshing
Threshing amount to detect threshing amount after threshing by device
A sensor 19 is provided, and the threshing amount sensor 19 detects
The chaff sheave 20 based on the detected value of the threshing amount
By controlling the angle of the configured chaff fins 20a,
At the time of definitive aircraft times row, during a certain period of time t ₂ the previous switch
While maintaining the angle of the cuff fin 20a,
The angle adjustment range of the tin 20a is set between the case of threshing wheat and the case of rice.
Threshing process amount sensor 19
If the detected value of
The angle of the fins 20a is small, and rice processing is better.
The angle of the Juffin 20a is increased .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The objects and constitutions of the present invention are as described above. Next, the constitution of the embodiment shown in the attached drawings will be described. 1 is an overall side view of the combine, FIG. 2 is a side cross-sectional view of a threshing sorter, FIG. 3 is a rear view showing a portion of a threshing processing amount sensor 19 provided on a straw chain, and FIG. FIG. 5 is a partial cross-sectional view, FIG. 5 is a diagram showing a relationship between a threshing amount of straw or the like and a target angle of chaff sheave, and FIGS. 6, 7, 8, and 9 are control flowchart diagrams.

FIG. 1 and FIG. 2 will be described. Threshing device 4
The raising and reaping device 1 is projected further forward, and the raising and
The grain stalks mowed by the reaper 1 are transported upward and backward by the transport device 2, the stock is inherited by the feed chain 3, sandwiched and transported backward, and the spikes are removed by the threshing device 4.
It is shed while passing through. The straw after threshing is conveyed backward by a straw chain 5 and conveyed onto a straw processing device 6. The straw that has been cut by the straw processing device 6 is discharged to the field scene. As shown in FIG. 3, the support rod 11 of the support rod 10 is urged upward by a spring 12 at the support part of the straw chain 5. The support rod 11
A stay 13 is in contact with a lower end of the arm, 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 supporting the pivot shaft 14, and the stay 13
Is biased to rotate upward. Arm 15
A threshing processing amount sensor 1 consisting of a potentiometer, a rotary encoder, etc.
9 is in contact with the arm 19a. Therefore, when the straw passes, the support rod 11 descends according to the amount of the straw, and the arm 15 also rotates according to the considerable amount, and the rotation is detected by the threshing amount sensor 19. , The value of which is proportional to the amount of threshing of waste straw or the like.

[0007] Of the paddy, straw waste, and the like that have been threshed by the handling cylinder 7 in the threshing device 4, the paddy that has leaked through the crimp net 8 is
Those that fall from the flocking plate onto the swinging sorting device 9 and do not leak the crimp net 8 are sorted by the straw rack 21,
The straw waste and the sludge are processed again by the vertical processing cylinder 22, the waste is discharged outside the machine, the second product falls onto the second conveyor 23, is reduced to the parallel processing cylinder 24, and is processed again. You. The fine particles that have leaked from the chaff sheave 20 of the rocking sorting device 9 fall first onto the conveyor 25 and are transported and stored in the Glen tank 26. The chaff sieve 20
Is configured as shown in FIG. That is, the upper portions of the chaff fins 20a are pivotally supported on the body side,
The lower end is pivotally supported by a connecting rod 29, and the chaff fin 20 at one end.
A bell crank 30 is fixedly mounted on the upper shaft of a. A spring 3 is attached to one end of the arm 30a on one side of the bell crank 30.
1 and the connecting wire 32 is locked to the arm 30b on the other side. The other end of the connecting wire 32 is
Shutter 3 for changing the size of suction port 34 of 3
5 is connected to an arm 38 for rotating the same. The arm 3
8, a spring 36 for urging the shutter 35 to the opening side is connected.

In the middle of the connecting wire 32, a sector gear 37 is pivotally supported.
Driven through the gear box 41 and the sector gear 37
By contacting a pin 37a protruding from the side of the angle sensor 42 with the arm of the angle sensor 42, the amount of rotation can be detected and the opening of the chaff fin 20a can be detected.

In the above configuration, the control of the present invention will be described with reference to the flowcharts of FIGS. 6, 7, 8, and 9. In the flowchart, the fact that the FON flag is 1 indicates that the control motor 40 has been driven.
When the ON flag is 0, it indicates that the control motor 40 is not driven. The fact that the FOFF flag is 1 means that the pulse O during the pulse drive control is
It means that in the T ₄ of the time, which is a FF time,
The fact that the FOFF flag is 0 means that the control motor 4
0 indicates that stopping the motor is not stopping the motor during the pulse OFF time.

First, a timer T for determining a control interval
_When the set time t ₁ elapses (S1), the timer T
₁ to reset the (S2), it starts to count the timer T ₁ (S3). Next, read the detected value V _W of the threshing process quantity sensor 19 to detect the threshing process amounts such as straw discharge (S4), also the value V _C detected by the V _KC from the angle sensor 42 the angle of Chafufin 20a (S5), reads the value V _C (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 blinks (S10) to issue an alarm. In addition, the payout value V
Otherwise _W · V _C is 0, FON flag determines whether 1 (S8), to not 1, the condition if it is 1, the control motor 40 is activated so as to rotate the Chafufin 20a And calculate V _C −V _KC , and the absolute value is 0
If it is above, it is understood that it is operating, and if it is 0, the control motor 40 is broken, and the alarm lamp blinks and an alarm is issued (S10). If it is 0 or more, go to.

It is determined whether or not the automatic switch is ON (S11). Even if the automatic switch is ON, if the work clutch is OFF (S12), it is determined that the operation is manual operation, and the alarm lamp is turned off ( S13), timer T
₂ , T ₃ and T ₄ are reset, and the FOFF flag is set to 0 (S14). Then, the voltage V _H of the adjustment volume at the time of manually setting the angle is detected (S15), and 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), chaff angle detection value V _C determines it is within range of the target value _{V B ± ΔV 1 (S17)} . If it is out of the range, the control motor 40 is driven to approach the target value (S18), and the FON flag indicating that the control motor 40 is driven is set to 1 (S19), and the process returns to the original state. Target value V _B ± ΔV ₁
If it is within the range, 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 state.

If the automatic switch is ON and the work clutch is ON, an alarm lamp is turned on (S22), indicating that automatic control is being performed, and it is determined whether n = 0 (S23).
If 0, the detection value V _W of the threshing amount sensor 19 is changed to V _K1
(S24), and n = 1 (S25). And the values to averaging the threshing process quantity sensor 19 and V _a (S34), performs control of the color target to be described later, when coming to the flow is repeated (S23) from the beginning again, n represents 1 and Since it has been input (S26), the detection value V _W of the threshing amount sensor 19 at that time is set to V _K2 (S27),
n = a 2 (S28) average V _a previous V _K1 and V _K2
It is said. (S29) to (S3)
3), an average of up to four times is obtained, and thereafter n is updated so that an average of the latest four times is obtained (S3).
4).

Next, it is determined whether or not the rice is dry rice with the selection dial (S35). If the dry rice is used, the constant k _{2s of the} dry rice is set to k ₂ (S36). The upper limit value V _{maxs of the} angle is V _max , and the lower limit value V _mins is V _min
The time t _2s until the chaff sheave 20 closes after the completion of cutting in the case of dry rice is defined as t ₂ (S37). In the present invention, the predetermined time t ₂ is the threshing amount sensor 1
9 is lower than the threshold value V _Y of the threshing processing amount, and is a time corresponding to a certain time when maintaining the control state before the certain time, and this certain time t ₂ Is changed to dry rice, wheat, and wet rice. When the selection dial is wheat (S38), the wheat constant k _{2m is set} to k _{2 in the same} manner as described above (S39),
The upper limit value V _maxm chaff angle in the case of wheat and V _max, the lower limit V _Minm and V _min, the time t _2m for closing the chaff sieve 20 reaper after the end of the case of wheat and t ₂ (S4
0). Similarly, when the selection dial is other than that, in the present embodiment, in the case of rice wet material, the constant k _{2i is set} to k ₂ (S4
1) The upper limit value V _maxi of the chaff angle is set to V _max and the lower limit value V
The _mini and V _min, the time t _2i until the closing of the chaff sieve 20 after the completion of the reaper and t ₂ (S42).

[0014] Then, the value V _H reads (S43) the volume when the operator to finely adjust manually, calculates the chaff angle target value V _B than the value (S44), chaff angle detection value V _c is the target value to determine whether the absence range of _{V B ± ΔV 2 (S45)} . If it is within the target range, there is no need to drive the control motor 40 to rotate the chaff fin 20a, so the control motor 40 is stopped (S46), and the control motor 40 is pulse-driven to move the chaff fin 20a. reset of T ₄ is a timer T ₃ and OFF time is oN time for rotating the FOFF flag to 0 (S47). Outside of the upper limit value V _MAX and the lower limit value V _MIN chaff angle detection value V _C is chaff angle, i.e., if outside the control range (S48), since it is not be controlled, stopped the same control motor 40 (S4
6), reset the timers T ₃ and T ₄ and set the FOFF flag to 0 (S47).

Next, in the present invention, when a threshing amount sensor is used as one of the means for detecting the time of recirculation in the field, the threshing amount of the straw or the like is detected within the control range. mean value V _a threshing process quantity sensor 19, if determined to be smaller than or equal to the threshold V _Y states threshing process amounts such as straw discharge has almost disappeared (S49), the threshold V _Y If it exceeds, it is determined that this is a state in which the culm has disappeared, such as at the end of the field or at the end of cutting, and the time T
₂ of the count (S50) starts and compares whether said time T ₂ exceeds a predetermined time and a predetermined time t ₂ of the above (S5
The judgment is made by 1).

[0016] Then, a predetermined time after the average value V _a threshing process quantity sensor 19 becomes lower than the threshold V _Y t ₂
Until the point is exceeded, the previous state is maintained. In this case, unlike the decrease in the threshing processing amount of straw and the like due to the normal control of the cutting state, it is a sharp decrease in the threshing processing amount of straw and the like at the end of the field or at the end of cutting. , since the fine grains of the loss from the third opening and closing the stretch Chafufin 20a exactly as the control command is a problem occurs that occurs, it is to maintain a state before the predetermined period of time t _2. In other words, returning to the state again, the idle state on the flowchart is maintained to maintain the previous state 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).

[0017] Then, if it is determined not to be a stretch straw discharge disappears state as the end time of the field end times line Ya reaper (S49), resets the drop time of the detected value T ₂ (S5
2). First, FOFF
It is determined whether or not the flag is 1 (S53). If the FOFF flag is 1, the state is the stop pulse during pulse control, so the process proceeds as it is, and the stop pulse time t
Wait for ₄ to elapse. If the FOFF flag is not 1, the control motor 40 is driven to the target value side (S54), and F indicates that the control motor 40 has been driven.
ON flag (S55) as 1, it is of the counting start T ₃ (S56). T ₃ is the motor drive time of the pulse control, only the control motor 40 during this time is rotated.

The motor drive time t ₃ has two set times t ₃ and t ₃ ′. Absolute value of the difference between the chaff angle detection value V _C and chaff angle target value V _B is the set value Δ
V ₃ to determine whether a larger (S57), a large case T ₃ is driven by using the direction of the longer driving time t _3, it is determined whether the drive time t ₃ of the way had the long has elapsed (S5
8) If the time has not elapsed, go to step S. If the time has elapsed, the control motor 40 is stopped (S60). Similarly, the absolute value of the difference between the chaff angle feeding value V _C and chaff angle target value V _B is If the set value [Delta] V ₃ is smaller than, using shorter motor drive time t ₃ of the '.

Then, it is determined whether or not the motor driving time t ₃ ′ has elapsed (S59), and if not, the control motor 40 is stopped (S6).
0). Since the motor is stopped in a 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 a time stop pulses during pulsing, after a lapse of time of stop pulse (S65), it is back to FOFF flag to 0. When the T ₄ has not elapsed t ₄ (S64) is a FOFF flag remains 1 is back original of the.

In FIG. 5, a threshing amount sensor 19 is shown.
The value after control of the angle sensor 42 of the chaff fin 20a is shown with respect to the detected value of. In the broken line, in the case of rice wet material, the "open" state is maintained to some extent even when the flow rate is reduced, but when the surplus amount is reduced, the operation is slightly performed in the "closed" direction. is there. In the case of rice and wheat dry wood, it is closed as the flow rate decreases, but if it is closed too much, the grains will not pass through, so the closing degree is changed halfway. Wheat is slippery, so the angle is made smaller, but in the case of paddy, it is harder to slip, so that the angle is larger than the value detected by the threshing amount sensor 19, making it easier to slip. In particular, the angle is steeper when the humidity is high, such as when harvesting is performed before the appropriate harvesting time, or when harvesting is performed in the morning or after rain.

[0021]

The present invention has the following effects by the above configuration. First, at the end of the field
If the threshing volume decreases sharply in
Unlike the reduction of threshing throughput by normal control of
As soon as the chaff fins are closed as instructed, the third exit
Fine grains of the loss is so cunning failure raw that is generated from
However, as in the present invention , during the fixed time t ₂ ,
In order to maintain the attitude of the control state before the
After the end of the field and before the next harvesting operation,
To maintain the same condition as described above.
From the third exit due to the sudden automatic closing of the Juffin 20a
The loss of granules can be eliminated.

Second, the wheat grains have good slip, flow quickly through the chaff fins 20a, and the rice grains have high resistance.
It is slow to flow through the chaff fins 20a. In order to make the control commensurate with the speed of passing through both chaff fins 20a, even if the detection value of the threshing amount sensor 19 is the same, the inclination angle of the chaff fins 20a corresponding thereto is small for wheat, In the case of threshing wheat and rice, the control device for selecting the optimum combine can be obtained.

[Brief description of the drawings]

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

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

FIG. 3 is a threshing amount sensor 19 provided in a straw chain.
The rear view which shows the part.

FIG. 4 is a partial cross-sectional side view of Karamin and chaff sieve.

FIG. 5 is a diagram showing a relationship between a threshing amount of waste 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 amount sensor 20 Chaff sheave 20a Chaff fin 40 Control motor

Claims (1)

(57) [Claims] (1) After threshing by a threshing device, the threshing processing amount is reduced.
A threshing amount sensor 19 for detecting the threshing amount is provided.
Based on the detected value of the threshing amount detected by the sensor 19,
Angle of chaff fin 20a constituting chaff sheave 20
Is controlled for a certain time t
Maintain the angle of the chaff fin 20a in front of ₂
In addition, the angle adjustment range of the chaff fins 20a is
Threshing differs from threshing rice and threshing rice.
When the detection value of the processing amount sensor 19 is the same, the wheat is processed.
The angle of the chaff fins 20a is smaller and the rice is processed.
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