JPH02119716A - Classifying and controlling device of thresher - Google Patents

Abstract

PURPOSE:To reasonably control classified state by providing sort of grain culm- indicator indicating sort of grain culm fed to threshing chamber as rice or wheat and changing gap of chaff sieve in non-feeding state of grain culm in obedience to sort of grain culm. CONSTITUTION:An indication switch of grain culm sort indicating the grain culm fed to threshing chamber A as rice or wheat is connected to controlling device. Gap between long board-like part materials (a) of chaff sieve 21 in non-feeding state of grain culm is controlled to closing side, narrower for wheat than the case of rice to make the grain culm difficult to drop.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is provided with a swinging sorting board for sorting out leakage from a handling room and a winnowing machine for blowing sorting air, and the swinging The sorting plate includes a chaff sieve made up of strip-like members arranged in parallel in the direction of transfer of the processed material, and an actuator for adjusting the distance between adjacent strip-like members. and an actuator for adjusting the amount of air blown from the winch, and grain culm supply detection means for detecting whether or not grain culm is being supplied to the handling chamber. The actuator for adjusting the interval and the The present invention relates to a sorting control device for a thresher that is provided with a control means for operating an actuator for single air blow adjustment.

[Conventional technology]

In the sorting control device for this type of threshing equipment described above, when grain culms are not supplied, the amount of material leaking from the handling room decreases, so it is detected whether or not grain culms are being supplied to the handling room. Based on the information of the grain culm supply detection means, as the grain culm is not supplied, the sorting state corresponding to the state where the grain culm supply amount is small is automatically set.

However, conventionally, regardless of the type of grain culm supplied to the handling room, the interval in the grain culm non-supply state is controlled to a set value corresponding to the state where the grain culm supply amount is small when the grain culm is rice. I had decided to do so.

[Problem to be solved by the invention]

However, as a result of various experiments, when the supplied grain culm is wheat, cut straw etc. are more likely to occur than when it is rice, and if the interval in the state where grain culm is not supplied is the same as that of rice, the above cut straw will be generated. It was found that the grains tend to fall from the chaff sieve, and there is a risk that grain culms may be mixed into the grains that are sorted and collected.

The present invention has been made in view of the above circumstances, and includes: 1.
The purpose is to enable appropriate control of the sorting state in a state where grain culms are not supplied, depending on the type of grain culms.

[Indispensable means to solve problems]

The sorting control device for a threshing machine according to the present invention is provided with a swinging sorting board for sorting out the material leaked from the handling room and a winnowing machine for blowing sorting air, and the swinging sorting board is configured to transfer the material to be processed. a chaff sieve configured of strip plate-like members arranged in parallel in the direction, an actuator for adjusting the interval to change and adjust the interval formed between adjacent strip plate-like members; an actuator for adjusting the amount of air blown to change and adjust the flow rate, and grain culm supply detection means for detecting whether or not grain culm is being supplied to the handling chamber. As the supply is detected, the interval adjusting actuator and the air blowing amount adjusting actuator are operated so that the spacing and the air blowing amount each become set values corresponding to a state where the grain culm feeding amount is small. It is equipped with a control means for operating it, and its characteristic configuration is as follows.

That is, a grain culm type indicating means is provided for instructing whether the grain culm supplied to the handling room is rice or wheat, and the control means determines whether the grain culm is rice or wheat based on the information of the grain culm type indicating means. The actuator for adjusting the spacing is configured to operate so that the spacing in the culm non-supply state is a set value on the closing side that is smaller when the grain culm is wheat than when the grain culm is rice. At the point.

[For production]

A grain culm type indicating means is provided to indicate whether the grain culm supplied to the handling room is rice or wheat, and the interval in the state where grain culm is not supplied is set so that when the grain culm is supplied to the handling room, the interval is set to be shorter when the grain culm is supplied to the handling room than when it is rice. By controlling the grain to a smaller closed side, grain culms are made to fall more easily in the case of wheat than in the case of rice.

〔Effect of the invention〕

Therefore, the sorting state after the grain culm is in a non-supply state is
Since it can be precisely controlled depending on the type of grain culm,
We have now been able to improve the sorting accuracy.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to a sorting control device for a threshing device mounted on a combine harvester will be described based on the drawings.

As shown in FIG.
), a threshing device (2) mounted on the upper part of the vehicle body (V
) is provided with a reaping part (3) attached to the front part.

The reaping section 3) includes a raising device (4), a cutting blade (5) that cuts the base of the grain culm, and a conveyor that transports the reaped grain culm to the rear of the machine and supplies it to the threshing device (2). Device(
6).

In the figure, (S0) detects the presence or absence of grain culm supply to the threshing layer (2) by contacting and acting on the stock base of the reaped grain culm during the transport path of the transport device (6). This is a stock sensor as a grain culm supply detection means.

As shown in FIG. 5, the output of the engine (E) mounted on the vehicle body (V) is transmitted to the threshing device (2) via a belt tension type threshing clutch (7), and a tension type running latch (8), and
The power is transmitted to the drive case (98) of the crawler traveling device (1) via a hydraulic continuously variable transmission device (9) for traveling.

Further, a part of the output transmitted to the drive case (9A) is transmitted to the reaping section (3) via a belt tension type reaping clutch (10). In addition, in the figure, (
S1) is a vehicle speed sensor serving as vehicle speed detecting means for detecting the traveling speed (hereinafter sometimes abbreviated as vehicle speed) of the vehicle body (V) based on the output rotational speed of the transmission (9>).

However, although not shown in the drawings, forward/reverse switching and shifting of the vehicle body (V) are manually adjusted by manually operating the transmission device 9).

As shown in FIG. 6, the threshing device (2) includes a handling cylinder (1
1), a feed chain (12) that clamps and conveys the grain culms in a sideways posture supplied from the conveyance device (6), a cross-flow fan (13) for dust removal, and a winnow. (14) and a swinging sorting plate (15) (B
), a first port (16) for counting grains, and a second port (17) for collecting second grains.

At the bottom of the handling room (A), there is a receiving net (18) for grain sorting.
is provided, and at the terminal end of the handling chamber (A), the handling chamber (A) is provided with a
A) A discharge port (19) is opened to discharge the processed material remaining in the chamber. However, the treated material leaking through the receiving net (18) and discharged through the discharge port (19) is collectively referred to as the leaked treated material from the handling room (A).

The swing sorting plate (15) includes a grain pan (20) located above the winnowing machine (14),
a chaff sieve (21) located following the chaff sieve (21), a straw rack (22) located following the chaff sieve (21), an auxiliary grain pan (23) located below the starting end side of the chaff sieve (21), and an auxiliary grain pan (23) located below the starting end of the chaff sieve (21). Glensieve (2) is located next to Glenpan (23).
4), which are attached between a pair of left and right side plates (25).

In FIG. 6, (26) is a gren pan for the outlet disposed opposite to the outlet (19), and (27) is located subsequent to the gren pan (26), and in the lateral direction. A plurality of rods are lined up, and the grenpan (26) and rods (27) are swung together with the swinging sorting plate (15). Moreover, (28) is the rod material (27
) is a rotating body with blades that acts on the processed material.

As shown in FIGS. 7 and 8, the chaff sieve (2
1) is composed of a plurality of strip-shaped members (a) and (a') arranged in parallel in the direction of transport of the processed material, and between adjacent strip-shaped members (a) and (a'). The space (s) formed between the two ends can be freely changed and adjusted.

To explain, the plurality of strip-shaped members (a),
The upper end of one of the strip-shaped members (a0) of (a') is connected to the fulcrum shaft (2) passing through the pair of left and right side plates (25).
9), and connecting pins (30) passing through elongated holes (b) formed in the side plate (25) are provided at both ends of the lower end side of the band plate-like member (a''), respectively. It is attached.

A pair of left and right links (31) are provided externally fitted onto each of the fulcrum shaft (29) and the connection pin (30), and an operating arm (32) is provided on one of the pair of left and right links (31).
) is attached.

Other strip-shaped members (a0) other than the above-mentioned - two strip-shaped members (a0)
In a), the U-shaped attachment is attached to the side plate (25) using metal fittings (33). The U-shaped mounting bracket (33) is attached to the shaft portion (33) on the upper end side.
3a) is fixed through the side plate (25), and the shaft portion (33b) on the lower end side is configured to penetrate into a long hole (b) formed in the side plate (25). Then, each of the lower end portions of the band plate-like member (a) is attached to the shaft portion (33b) of the lower end side of the metal fitting (33).
) is fitted externally.

The connecting pin (30) and the plurality of attachments are attached using metal fittings (33
) are connected to each other by a linking plate (34), thereby allowing each of the strip-like members (a) and (a') to swing together with their upper ends as a fulcrum. By this,
It is configured to change and adjust said spacing (S).

An electric motor (M1) serves as an actuator for adjusting the chaff opening for changing and adjusting the interval (S).
is provided on the fixed frame side of the threshing device (2), and a spring (35
) is connected to the operating arm (32), and the operating arm (32) and a lock member (37) that engages with a screw shaft (36) driven forward and backward by the electric motor width, They are interlocked and connected by a wire (38).

In FIG. 7, (S2) is a chaff opening detection potentiometer that detects the adjusted state of the distance (S) as a change in the position of the top member (37), An end portion is connected to the top member (37). Further, (40a) and (40b) indicate that when the interval (S) reaches the adjustment limit, the operation lever (39)
This is a switch that is pressed and operated in order to automatically stop the electric motor (M1).

The winnow (14) is configured to be able to change and adjust the amount of air blown by changing its rotational speed.

To explain, as shown in Figures 10 and 11,
The human turnip IJ (41) attached to the rotating shaft (148) of the winnowing machine (14) is attached to a pair of left and right pulley portions (41a).
), (41b), and the rotation speed of the winnow (14) is adjusted by changing and adjusting the interval between the pair of left and right pulley parts (41a) and (41b), so-called split pulley type gear shifting. A device (42) is configured.

In FIG. 10, (43) is a transmission belt that transmits the output of the engine (E) to the human cab-IJ (41);
44) is a tension pulley.

The - side (41b) of the pair of left and right pulley portions (41a) and (41b) is fixed to the rotating shaft (14A),
The other (41a) is fitted onto the rotating shaft (14A) so as to be slidable in the axial direction. However, the other pulley part (41b) on the sliding side is different from the one pulley part (41b) on the fixed side.
41a) are connected by a connecting pin (45) attached to the pulley portions (41a) and (41b), so that the two pulley portions (41a) and (41b) rotate integrally and can change and adjust the distance between them.

To explain the structure for changing and adjusting the interval between both pulley parts (41a) and (41b), a bearing 17'' (46) is attached to the boss part of the sliding side pulley part (41a).
a first cam forming member (47) attached using a
As the first cam forming member (47) rotates, both the pulley portions (41a) are attached to the second cam forming member (48) attached to the fixed frame side of the threshing device (2). )
, (41b) for moving near and far.
a>, (48a) is formed (see Figure 12)
.

An electric motor (M2) serving as an actuator for adjusting the air flow is attached to the fixed frame side of the threshing device (2), and an operating arm (49) for speed change operation is attached to the first cam forming member (47). ) is attached, and its operating arm (
49) and a top member (51) that engages with a screw shaft (50) which is driven in forward and reverse directions by the electric morph (M2) are interlocked and connected by a release wire (52), thereby allowing the air blow pre-adjustment. The first cam forming member (47) is rotated by an electric motor (M2) to change and adjust the rotation speed of the winnow (14).

In FIG. 10, (S3) is a tow constant air volume detection potentiometer that detects the speed change state, that is, the air volume as a position change of the top member (51), and the free end of the operating lever (53) is connected to the top member (51). Further, (54a) and (54b) are such that when the top member (51) reaches the speed change limit, the operation lever (54b) is activated.
53), and is provided to automatically stop the electric motor (M2).

Further, in FIG. 11, (S4) is a tow rotation speed sensor that detects the rotation speed of the winnow (14).

Next, the electric motor (M1) for adjusting the interval of the chaff sieve (21) and the electric motor (M2) for adjusting the air flow rate of the winnowing machine (14) are operated to check the sorting state of the sorting device (B). A control configuration for controlling will be explained.

As shown in FIG. 1, a control device (55) using a microcomputer is provided, and the control device (55) detects whether or not the transmission device (9) for traveling is operated in the reverse direction. Back switch (S6), the stock sensor (
S0), an engine rotation speed sensor (S7) that detects the rotation speed of the engine (E), the vehicle speed sensor (S1), the Toumi rotation speed sensor (S,), the chaff opening detection potentiometer (S2), The potentiometer (S3) for detecting the constant tow air volume, and the chaff opening adjustment potentiometer (S3) for adjusting the chaff opening at the same vehicle speed.
8) A potentiometer (S9) for adjusting the constant air flow rate for controlling the air flow rate at the same vehicle speed, and a grain culm as a grain culm type indicating means for indicating whether the grain culm is rice or wheat. Each type selection switch (S, , ) is connected.

In FIG. 1, (56) is a display section using a liquid crystal display for displaying the sorting status such as the sludge and chaff opening in a bar graph format, and (57) is the display section (57) in the display section (56). This is a push-button type display state changeover switch for selectively switching the display state between the air flow rate and the chaff opening.Although it will not be described in detail, each time it is pressed, the display state of the air flow rate and the chaff opening change. The display state can be changed.

The control device (55) controls the operation of both the electric motors (M,) and (M2) based on preset and stored information and various kinds of human power information, and controls the operation of the sorting device (B). The chaff opening degree and the amount of air blown are automatically adjusted so that the sorting state of the threshing device (2) is maintained in an appropriate state corresponding to the amount of material to be processed by the threshing device (2).

However, in a combine harvester, the amount of material to be processed in the threshing device (2) increases as the reaping speed increases, so in this embodiment, the amount of material to be processed and the vehicle speed are in a proportional relationship. , Basically, the vehicle speed sensor (
Based on the detection information of step S1), the sorting state of the sorting device (B) is automatically adjusted so that as the vehicle speed increases, the sorting state corresponds to a larger amount of material to be processed.

To explain further, as shown in FIG. 3(a), basically, the higher the vehicle speed, the larger the amount of waste to be treated, which corresponds to the sorting state, that is, the interval (S) of the chaff sieve (21). (hereinafter sometimes abbreviated as chaff opening degree) becomes large and the air flow rate of the chisel (14) (hereinafter sometimes abbreviated as chiffon air volume) becomes large. The chaff opening degree and the air flow rate are automatically adjusted based on the detected information.

Furthermore, even at the same vehicle speed, the actual amount of waste to be treated may differ due to differences in grain culm granulation, etc. Therefore, it is possible to adjust the chaff opening and the amount of airflow at the same vehicle speed. It is.

To explain further, the target sorting state at the maximum vehicle speed is manually set using the potentiometer for adjusting the chaff opening (S8) and the potentiometer for adjusting the toe constant air volume (S9), and then By correcting the standard sorting state according to the vehicle speed based on the set target sorting state, the actual sorting state is made to be a sorting state according to the amount of leakage to be processed.
Figures (B) to (E) #Sho).

However, the appropriate sorting state is different when the grain culm to be post-processed is rice or wheat even if the amount of grain to be processed is the same, so the vehicle speed is The map of the correction value is automatically used for rice (f,)
and frequency change (f2). In this embodiment, the vehicle speed is set to four reference values (V,).
, (V2).

It is divided into five zones based on (V3) and (V4), and in each zone, the same chaff opening degree or the same amount of airflow is maintained. In addition, the speed difference between the maximum value and minimum value of each zone is set to be the same (
(See Figure 3 (0) and (c)).

Further, as the vehicle speed is decelerated to a value greater than the value set based on the speed difference, the interval adjustment electric motor (M1) is operated with a set delay time (for example, 10 seconds), and The electric motor (M2) for adjusting the air flow rate is operated on the delay time side. The value of the delay time will be set in consideration of the time required for the reaped grain culm to be transported to the threshing device (2), the time required for the supplied grain culm to be handled, etc. .

However, if the grain culm is wet, it becomes difficult for the grains to pass through the gap (S) of the chaff sieve (21), so as will be described in detail later, the gap (S) should be opened regardless of the amount of material to be processed. The air flow rate is maintained at the maximum value on the side, and the air flow rate is maintained at the target value set by the air flow rate adjustment potentiometer (S9).

Furthermore, during non-mowing work on headlands etc. where the stock sensor (S0) is turned off, or when the back switch (S6) is turned off.
When the vehicle is moving backwards when the switch is turned on, the sorting state is maintained in a preset state corresponding to a state in which the amount of leaked material is small, regardless of the vehicle speed. When operating to a preset sorting state, the electric motor (M,) for adjusting the interval is operated with a delay time, and the electric motor (M2) for adjusting the air blowing amount is operated at the delay time side. It's Nishide. However, the delay time should be changed to the rice setting value (
t1) is set to be larger than the set value for wheat (t20) (Fig. 13(a)).

(See (b)). Furthermore, since the appropriate sorting conditions for rice and wheat are different when the amount of material to be processed is small, based on the information of the grain culm type selection switch (S10), the chaff opening degree is generally higher for wheat than for rice. (See Figure 3 (d)), and on the other hand, the rice grain airflow is reduced to a smaller value than when the stock sensor (S,) is in the ON state, and in wheat, the stock The air volume is maintained at the same level as when the sensor (S,) changes from ON to OFF.

Note that the lower limit of the adjustable range of each of the potentiometers (S, ) and (S9) for adjusting the target value at the maximum vehicle speed is set at the interval (S) to prevent clogging of the grain culm due to erroneous operation. The setting value should be set to a value greater than the fully closed state where the air flow rate is zero or the state where the air flow rate is zero.

That is, by using the control device (55), the handling room (
8) The distance adjusting electric motor (M1) and the air blowing amount adjusting electric motor (M2) ) for operating the control means (100
) will be constructed.

The operation of the control device (55) will be explained below.

As shown in FIG. 2(a), the control device (55)
When the power is turned on and the motor is started, it first executes an initial setting process, then executes a process to read the data of each of the sensors, and then both the electric motors (M1) and (M2)
It is designed to perform output processing and target value setting processing for actually operating the system. Note that after the initial setting process is executed, each process from the process of reading the data of the sensors is repeated until the power is turned off.

To explain the output processing, as shown in FIG.
m) or more. In other words, it is determined whether or not the sorting process is possible and the Toumi wind fort can be changed and adjusted.

Therefore, when the threshing clutch (7) is OFF, processing of the threshing stop output and chaff stop output is executed in order to stop the threshing wind ■ and the adjustment of the chaff opening degree. It will be completed.

When the threshing clutch (7) is ON and the threshing rotation speed is equal to or higher than the set rotation speed, after performing output processing to change and adjust the threshing wind radius, the chaff opening degree is subsequently changed and adjusted. In this case, the output processing for the output is executed.

To explain the output processing of the above-mentioned Toumi air volume, first,
It is determined whether or not the airflow stop flag for stopping the adjustment of the airflow rate is ON, and if it is ON, airflow stop output processing is executed to maintain the airflow rate at the current airflow rate.

When the airflow stop flag is OFF, it is determined whether the airflow weak flag indicating that the airflow is to be operated to the weak side is OFF, and when it is 10FF,
Subsequently, it is determined whether or not the strong air flow flag is OFF without forcibly controlling the air flow rate.

Both the low power flag and the high power flag are O.
In the case of FF, the winding deviation for determining whether to maintain the winding air volume at the current value or increase or decrease it,
The current value detected by the toe constant air flow detection potentiometer (S3) is subtracted from the target value set in the target value setting process described later, and it is determined whether the toe deviation is within the set dead band. Discern.

When the torque deviation is forced, or when the torque weak flag is ON, the switch (54b) for detecting that the transmission (42) of the Karasaki winnow (14) has reached the lower speed limit is turned ON. , determine whether or not. When the switch (54b) is OFF, a weak air output process is executed in which the electric motor (M2) for adjusting air flow is operated to reduce the air volume.

On the other hand, when the torque deviation is forced and the strong torque flag is ON, a switch (54a) detects that the transmission (42) of the Karasaki winnow (14) has reached the upper limit of the shift. It is determined whether or not it is turned on. When the switch (54a) is OFF, a strong air output process is executed in which the electric motor (M2) for adjusting the amount of air is operated so as to increase the air amount. However, if the deflection deviation is within the set dead zone, or if the - side of the switches (54a) and (54b) are turned on, the deflection stop output process is performed to maintain the current air flow rate. It will be executed.

After executing the process of adjusting the air volume of the chiffon (14), in order to execute the process of adjusting the chaff opening, first, a chaff stop flag that stops adjusting the chaff opening is turned ON. It is determined whether or not there is, and if it is 10N, a chaff stop output process is executed to maintain the chaff opening at the current opening.

When the chaff stop flag is OFF, it is determined whether the chaff close flag indicating that the chaff opening degree is to be operated to the closing side is OFF, and if it is 10FF, the chaff opening degree is continuously changed. It is determined whether or not the chaff open flag indicating that the chaff is to be operated to the open side is OFF.

Both the chaff close flag and the chaff open flag are O.
In the case of FF, the chaff deviation for determining whether to maintain the chaff opening degree at the current value or increase or decrease it,
The current value detected by the chaff opening detection potentiometer (S2) is subtracted from the target value set in the target value setting process described later, and it is determined whether the chaff deviation is within the set dead zone. Discern.

When the chaff deviation is on the open side or when the chaff close flag is ON, the chaff sieve (21
) It is determined whether the switch (4 (111)) that detects that the interval (S) has reached the lower limit on the closing side is ON or not. If the switch (40b) is OFF, A chaff close output process is executed to operate the chaff opening adjusting electric motor (M1) to close the interval (s).On the other hand, when the chaff deviation is on the closing side, When the flag is ON, the switch (40a) that detects that the interval (S) of the chaff sheave (21) has reached the upper limit on the opening side is turned OFF.
It is determined whether or not N. Then, the switch (
40a) is OFF, the chaff opening adjustment electric motor Q, 1. ) to execute the chaff opening output process. However, if the toe deviation is within the set dead zone, or one of the switches (40a) and (40b) is turned off.
If the opening is N, the chaff stop output process is executed to maintain the current opening.

The process for setting each of the flags will be described in detail later when the automatic mode process is explained.

Next, based on the flowchart shown in Figure 2 (c),
A target value setting process for setting each of the target value of the toe air volume and the target value of the chaff opening degree will be described.

First, in order to repeatedly execute this target value setting process every time a set time elapses, that is, in order to update various data for controlling the sorting state at every set time, It is determined whether or not a set time (500 ms) has elapsed, and the target value setting process is executed only when the set time has elapsed.

If the set time has elapsed, the control device (55) is used to activate a check mode for checking the operation of the control device (55) during manufacturing, etc.
5) Check terminal (
It is determined whether the signal (CK-3) (not shown) is ON or not, and if it is OFF, a fine adjustment mode is set to manually adjust the air volume and the chaff opening. Determine whether it exists or not.

Although not described in detail, the fine adjustment mode is a state in which the display state changeover switch (56) for switching the display state of the display section (56) is turned ON and the control device (
55) is automatically activated when the main switch (not shown) is turned on.

If the mode is the check mode or the fine adjustment mode, the process of the check mode, which will be described later, is executed.

When it is neither the check mode nor the fine adjustment mode, the adjustment value by the chaff opening adjustment potentiometer (S8) is set to a value close to the maximum value (5V) on the opening side (4,
4V), and if it is larger than the set value, it automatically enters the sorting state when the grain culm is wet (hereinafter abbreviated as wet mode),
If the value is smaller than the set value, the chaff opening adjustment potentiometer (S8
) The control mode is automatically switched based on the value of ).

The check mode is provided to enable confirmation of the operating status of the head air volume and chaff opening, as well as adjustment and inspection of the operating range during manufacture. And Figure 2 (
As shown in (d), when this check mode is started, the above-mentioned winding air volume and chaff opening are adjusted respectively by the winding air volume adjusting potentiometer (S9) and the chaff opening adjusting potentiometer (S8). Both potentiometers (s
a), (S9) Each of the flags is set based on the respective values.

In other words, the chaff opening adjustment potentiometer (S8
) is less than the set value (0.2V) on the fully closed side, the chaff closing frac is adjusted so that the chaff sheave (21) is in the fully closed state with the minimum interval (S). ONL and the chaff open flag is turned OFF. When the adjustment value is equal to or higher than the set value (4,8V) on the fully open side, the chaff close flag is set to ○FFL so that the chaff sheave (21) interval (S) becomes the maximum in the fully open state.
Also, the chaff open flag is turned on.

However, when the adjustment value is between the set value on the fully open side and the set value on the fully open side, the chaff close flag and the chaff open flag are set to ○FFL, and the target value of the chaff opening is set to The chaff opening adjustment potentiometer (S8
) is set based on the adjustment value. Incidentally, the relationship between this adjustment value and the target value is designed to be directly proportional.

When the setting of the target value of the chaff opening degree and the flag is completed, the toe constant air volume adjustment potentiometer (
Based on the adjustment value in step S9), the target value of the air flow rate and the flag are set.

To explain, when the adjustment value by the toe constant air volume adjustment potentiometer (S9) is less than the set value on the weak side (0.2V), the toe weak flag is set in order to minimize the toe air volume. is turned on, and the strong power flag is turned off. The adjustment value is a forced setting value (4, 8,)
If this is the case, the weak air flow flag is set to 0FFL and the strong air flow flag is set to ON in order to maximize the air flow rate. and when the adjustment value is between the weak side setting value and the forced setting value, turning off both the flags so that the air flow rate becomes a value corresponding to the adjustment value, Further, the target torque value is set corresponding to the adjustment value. Incidentally, the relationship between the m-node value and the target value is set to be directly proportional, as in the case of the chaff opening.

To explain the wet mode, as shown in FIG. 2 (e), the target value of the chaff opening degree is set to the maximum value on the opening side (26 mm), and the target value of the chaff air volume is set to The toe constant air volume adjustment potentiometer (S9
> is set to a value corresponding to the adjustment value. In this wet mode as well, the adjustment value and the target value are set to have a direct proportional relationship, but the range of settable target values is generally more forced than the adjustment range in the check mode. This should be within the range.

Next, based on the flowchart shown in Figure 2 (f),
The operation in the automatic mode will be explained.

First, it is determined whether or not the hack switch (S6) is ONL, and if it is 10FF, the stock sensor (S6) is
0) is turned on. Incidentally, the processing when the back switch (S6) is ON and the stock stock sensor (S0) is OFF will be described later.

When the pax inch (S6) is OFF and the stock sensor (S0) is ON, the stock sensor (S0) is turned on.
S0) is turned ON for the first time, and if it is turned ON for the first time, it is determined that the mowing work has started, and the current rotation speed detected by the engine rotation speed sensor (S7) is set as the reference rotation speed. If it is not turned on for the first time, it is determined whether the reference rotation speed is greater than the current rotation speed, and if it is not, the reference rotation speed is set to the current rotation speed. Update to.

Then, the current rotation speed is subtracted from the reference rotation speed to obtain the rotation speed down value, and the rotation speed down value is the set value (20O
It is determined whether or not the rpm is greater than or equal to the rpm set.

If the rotation speed down value is less than the set value,
Based on the information of the grain culm type selection switch (S10), it is determined whether the treated grain culm is rice or wheat.

When the grain culm is rice, in order to correct the target value of the rice grain to a value corresponding to the vehicle speed detected by the vehicle speed sensor (S1), the correction for rice is made from the value of the detected vehicle speed. The grain correction value is set based on the value map (f1) (see Fig. 3 (b)), and when the grain culm is wheat, the correction value map (f2) of the frequency change (see Fig. 3 (b)) is set. (b) The above-mentioned Toumi correction value is set based on the following.

Next, after calculating the difference between the vehicle speed at the time of previous detection and the current vehicle speed, a delay flag is set to make the chaff opening degree change with a delay time when the vehicle speed is significantly reduced. Determine whether or not.

If the delay flag is ON, it is determined whether or not a set time has elapsed, and if the set time has elapsed, the delay flag is turned OFF, and then the chaff correction value is calculated from the detected vehicle speed. It is set based on the correction value map (g) (see FIG. 3 (c)).

If the delay flag is OFF, it is determined whether the deceleration is greater than the set value, and if the deceleration is greater than the set value, the delay flag is turned ON and the deceleration is greater than the set value. If the vehicle is not decelerating, the chaff correction value is set to a value corresponding to the detected vehicle speed.

However, if the rotational speed down value is equal to or greater than the set value, both the stiffness correction value and the chaff correction value are set to zero.

After setting the delay flag or the chaff correction value,
It is determined whether or not the elapsed time after the stock price sensor (S0) was turned on has exceeded a set value (5 seconds). In other words, it is determined whether or not the time required for the reaping operation to become stable has elapsed since the start of the reaping operation.

If the elapsed time after the stock sensor (S0) is turned ON is less than the set value, the chaff stop flag and the toumi stop flag are set in order to maintain the chaff opening degree and the toumi wind ff1f current value. Together, ONI completes this automatic mode process.

If the elapsed time after the stock sensor (S0) is turned on is equal to or greater than the set value, after turning off both the chaff stop flag and the corn stop flag, the grain culm type selection switch (S+0) is turned off. Based on the information of After setting the adjustment value on the basis of and wheat, respectively.

Next, it is determined whether the chaff target value is less than the minimum value on the closing side, and if it is less than the minimum value, it is set to this minimum value. However, this minimum value is set so that rice is larger than wheat. Incidentally, this minimum value is set to 18ml11 for rice and 14mm for wheat.

After setting the chaff target value, the chaff target value is determined by adding the adjustment value by the tow constant air volume adjustment potentiometer (S) (see Fig. 3 (e)) and the correction value based on the vehicle speed. Set.

However, the Toumi target value is the preset minimum value (800
rpm), it is set to the minimum value.

When the back switch (S5) is ON, or
To explain the process when the stock sensor (S0) is OFF, when the stock sensor (S0) is OFF, the stock sensor (S.) is 0FFI for the first time,
If it is turned off for the first time, the current grain rotation speed at the time when the stock source sensor (S0) changes from ON to OFF is stored as the stock source OFF rotation speed, and then the grain culm type is determined. It is determined whether it is rice or wheat based on the information of the selection swifter (sh0).

In the case of rice, it is determined whether the elapsed time since the stock origin sensor (SO> was turned off, that is, the stock origin OVF time) is less than a set value (10 seconds), and if it is less than the set value. In some cases, the Toumi target value is set to a value obtained by subtracting a set rotation speed (20Orpm) from the stock OFF rotation number, and if the stock OFF time is equal to or greater than the set value, the Toumi target value is Set the value to the set rotation speed (800 rpm).

Next, in order to set the target value of the chaff opening according to the stock OFF time, the stock stock OFF time is set to a set time (15 seconds longer than in the case of the toumi). ), and if it is less than the set time, turn on the chaff stop flag to complete the automatic mode processing, and if it is longer than the set time, turn the chaff stop flag to 0FFL. , and after setting the chaff target value to the minimum value on the closing side (18 mm), this automatic mode processing is completed.

On the other hand, when the grain culm is wheat, the grain target value according to the stock origin OFF time is not set, and the
By setting the F rotation speed to the above-described target value, the rotation speed, that is, the rotation air volume at the time when the stock sensor (S0) is turned off, is maintained. However, the chaff opening degree is determined by the stock sensor (S,
) is turned OFF until the set time (10 seconds) has elapsed, the current opening degree is maintained, and then the minimum value (14+nm)
In order to do this, it is determined whether the stock source OFF time is less than a set time (10 seconds), and if it is less than the set time, the chuff stop flag is turned on, and if it is longer than the set time, In some cases, the chaff stop flag is set to 0FFL and the chaff target value is set to the minimum value.

In other words, as grain culms are not supplied, if the grain culms are rice, the chaff opening degree is closed with a delay time to a set value on the closing side corresponding to a sorting state where the throughput is small. ,
In addition, the chaff air volume is gradually reduced to the weaker set value without any delay time, and when the grain culm is wheat, the chaff opening degree is reduced with a smaller delay time than in the case of rice. A closing operation is performed to the closing side set value corresponding to the sorting state of, and
The air flow rate is maintained at the same level as when the grain culm supply state changes to the non-supply state.

[Another example]

In the above embodiment, the case where the processing material amount detection means is configured to indirectly detect the processing material amount by setting the target values of the blower air volume and the chaff opening degree based on the vehicle speed has been exemplified. The actual amount of processed material may be detected based on the thickness of the grain culm layer conveyed in the feed chain (12) of the threshing device (2), and the target value may be set based on the detected amount of processed material. good. Furthermore, in the handling room (A), in addition to the grain culms conveyed in the phytochain (12), the second port (
Since the second material collected from 17) is also reduced, the amount of this second material can be detected or
), and the sorting state may be automatically adjusted based on the amount of processed materials supplied and the amount of secondary materials. The configuration can be changed in various ways.

Further, in the above embodiment, the chaff opening adjustment potentiometer (S8) for adjusting the target value of the chaff opening at the maximum vehicle speed is used to indicate whether or not the grain culms are clustered. However, for example, a sensor may be provided to detect whether or not the grain culm being conveyed in the feed chain (12) is wet, so that the wet state can be automatically determined, or a manually operated A switch may be used to indicate whether or not the grain culm is wet.

In addition, the configuration of each part necessary for carrying out the present invention can be changed in various ways depending on the intended use.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the sorting control device for a threshing machine according to the present invention, in which FIG. 1 is a block diagram of the control configuration, FIGS. 2(a) to (f) are flowcharts of control operation, and FIG. is an explanatory diagram showing the relationship between vehicle speed and sorting state, the same figure (b) is an explanatory diagram showing the relationship between the correction value of Toumi air volume and vehicle speed, and the same figure (c) is an explanatory diagram showing the relationship between the vehicle speed and the vehicle speed.
is an explanatory diagram showing the relationship between the chaff opening correction value and vehicle speed, the same diagram (d) is an explanatory diagram of the chaff adjustment value, the same diagram (e) is an explanatory diagram of the toe adjustment value, and Fig. 4 is a schematic side view of the combine harvester. Figure, 5th
The figure is a transmission system diagram, Figure 6 is a cutaway side view of the threshing device, Figure 7 is a cutaway side view showing the structure of the chaff sheave, Figure 8 is an enlarged side view of its main parts, and Figure 9 is a strip-shaped The mounting of the parts is a side view of the main part showing the structure, Fig. 10 is a side view of the main part showing the speed change structure of the karin, Fig. 11 is a cutaway side view of the manual pulley part of the karin, and Fig. 12 is the cam forming member. Developed plan view, No. 13
Figure (a) is a time chart showing the change in sorting status from the time when grain culm is not supplied when the grain culm type is rice, and figure (b) is a time chart showing the change in the sorting status when the grain culm type is wheat. FIG. (14)... Karawin, (15)... Rocking sorting plate, (21)... Chahoonbu, (A)...
...handling room, (a), (a')...banding plate-shaped member,
(M1)... Actuator for adjusting the distance, (
M, )... Actuator for adjusting air flow rate, (S
)......interval, (S0)...grain culm supply detection means, (S,,)...grain culm type indicating means, (
100)... Control means.

Claims (1)

[Claims] A swinging sorting plate (15) for sorting out the leaked material from the handling room (A) and a winnower (14) for blowing sorting air are provided, and the swinging sorting board (15) separates the material to be processed. A chaff sieve (21) composed of strip plate-like members (a) and (a') arranged in parallel in the transfer direction is provided.
an actuator for adjusting the distance (M_1) that changes and adjusts the distance (s) formed between adjacent ones of the winnowers (M_1), and an actuator for adjusting the amount of air blown (M_2) that changes and adjusts the amount of air blown from the winnowing machine (14). and the handling room (A).
A grain culm supply detection means (S_0) is provided for detecting whether or not grain culm is supplied to the grain culm supply detection means (S_0).
_0) detects grain culm non-feeding, the interval (s
) and the amount of air blown to a set value corresponding to a state where the grain culm supply amount is small. A sorting control device for a threshing device including a means (100), a grain culm type indicating means (S_1_0) for instructing whether the grain culm supplied to the handling room (A) is rice or wheat. is provided, and the control means (100) determines, based on the information of the grain culm type indicating means (S_1_0), that the interval (s) in the grain culm non-supply state is rice if the grain culm is wheat. A sorting control device for a thresher configured to operate the spacing adjustment actuator (M_1) so that the setting value is smaller on the closing side than in a certain case.