JPH072055B2 - Sorting control device for threshing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention is provided with an oscillating sorting plate that sorts out leaked products from a handling chamber, and the oscillating sorting plate is arranged in the processed product transfer direction. A chaff sheave composed of side-by-side strip-shaped members is provided, and an actuator for spacing adjustment for changing and adjusting a spacing formed between adjacent strip-shaped members, and a chamber are supplied to the handling chamber. A processed product amount detecting means for detecting the amount of the supplied processed product is provided, and the interval adjusting actuator is based on the information of the processed product amount detecting means so that the interval becomes larger as the supplied processed product amount becomes larger. The present invention relates to a threshing control device for a thresher provided with control means for actuation.

[Conventional technology]

In the selection control device of the threshing device of this type, conventionally, the smaller the amount of the processed material, the smaller the interval between the chaff sheaves.

[Problems to be Solved by the Invention]

In the conventional configuration, the chaff sheave interval becomes smaller as the amount of processed material becomes smaller. Therefore, when the supplied amount of processed material is very small, the interval is almost completely closed.

When the above interval is fully closed, the amount of grains collected as the first product through that interval is greatly reduced, and as a result, the amount of grains returned to the handling room as the second product increases,
Damaged grains may increase. In addition, as the amount of processed material decreases, the layer of processed material on the sorting plate becomes thinner, and as a result, the number of grains scattered due to the rocking increases and the grains are discharged to the outside of the threshing device and lost. May increase.

By the way, in the combine harvester, the amount of processed material is greatly reduced after the cutting work is interrupted or stopped, or when the cutting work is performed with a smaller number of cutting lines than originally provided.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the amount of grains discharged to the outside of a threshing device as damage or loss of the grains when the amount of processed products is small.

[Means for Solving the Problems]

The sorting control device of the threshing device according to the present invention is provided with an oscillating sorting plate for sorting the leaked processed material from the handling room, and the oscillating sorting plate is a strip plate shape arranged in parallel in the processed material transfer direction. A chaff sheave composed of a member, an actuator for adjusting a gap for changing and adjusting a gap formed between adjacent ones of the strip-shaped members, and a processed material quantity detection for detecting a handling quantity of the leaked processed material. And a control means for operating the interval adjusting actuator based on information from the processed material amount detection means such that the interval increases as the leaked processed material amount increases. The characteristic configuration is as follows.

That is, the control unit is configured to maintain the interval at a set interval larger than the interval corresponding to the detected processed product amount when the processed product amount detected by the processed product amount detecting unit is smaller than a set value. There is a point.

[Action]

When the amount of processed material is smaller than the set value, it is maintained at an interval larger than the interval corresponding to the detected amount of processed material, so that the amount of grains collected through the interval does not decrease. .

〔The invention's effect〕

Therefore, even if the amount of material to be processed is small, such as after cutting or stopping the mowing work, or when performing the mowing work with a smaller number of cutting lines than originally provided, the threshing device will cause damage or loss of the grain. The amount of grains discharged to the outside can be reduced.

〔Example〕

Hereinafter, an embodiment in the case where the present invention is applied to a sorting control device of a threshing device mounted on a combine will be described with reference to the drawings.

As shown in FIG. 7, the threshing device includes a handling room (A) that houses a handling barrel (2) that handles and processes a mowing grain culm sandwiched and conveyed by a feed chain (1A), and the handling room (A). ), A sorting device (B) provided with an oscillating sorting plate (3) for sorting the leaked material from (1) and a Karako (4) for sending sorting air.
Consists of.

In the lower part of the handling chamber (A), a catching net (5) for threshing threshing material is provided along the lower outer periphery of the handling barrel (2),
Then, an opening (6) for discharging the threshing material remaining in the handling chamber (A) is formed at a position on the rear side of the receiving net (5).

However, in the following description, the processed product that leaks through the receiving net (5) and the processed product discharged through the opening (6) are collectively referred to as a leaked processed product from the handling chamber (A).

The rocking selection plate (3) includes a Glen pan (7), a chaff sheave (8), and a Straw rack (9), which are arranged in order from the front to the rear, and the chaff sheave (8). Below the auxiliary glen pan (1
0) and the Glensive (11) are arranged in order in the front-back direction, and each part thereof is fixed between the pair of left and right side plates (12) and is formed in a plate shape as a whole.

In addition, in the lower part of the sorting device (B), a best item recovery section (13) for recovering the grain leaking from the grain sieve (11) as the first object, and an end section of the straw rack (9). And a processed product (abbreviated as “second product” in the following description) in which straw debris and grains that have fallen over the end portion of the grain sieve (11) are mixed and returned to the handling chamber (A). And a second item recovery section (14) for performing the operation. In the figure, (15) is a thrower for returning the second item to the handling room (A).

Explaining the chaff sheave (8), as shown in FIG. 8, a plurality of strip-shaped members (8a) juxtaposed in the processed material transfer direction (horizontal direction in FIG. 7) are The operation rod (16) pivotally attached to the left and right side plates (8b) with the upper end as a fulcrum, and the lower end of each strip plate member (8a) pivotally attached, is pushed and pulled in the front-back direction. By doing so, the interval (s) between adjacent ones of the strip plate-shaped members (8a) (which may be abbreviated as chaff opening in the following description) can be changed and adjusted.

An electric motor (M ₁ ) is provided as an interval adjusting actuator for changing and adjusting the chaff opening, and a linkage mechanism (17) driven by the electric motor (M ₁ ).
And the operating rod (16) are interlockingly connected by a release wire (18). In the figure, (19) is a spring for biasing the chaff opening to return to the closing side, and (S ₂ ) is the operation amount of the operation rod (16) by the electric motor (M ₁ ). Is a chaff opening detection potentiometer, and is attached to a linkage mechanism (17) driven by the electric motor (M ₁ ).

As shown in FIG. 9, an intake port (20) for supplying the air to be blown below the Glen sieve (11) as a selection wind is formed below the Karato (4), and the intake port (20) is formed. A lid (21) for opening and closing 20) is provided rotatably around the support shaft (P) by an operating arm (22).
That is, by rotating the operation arm (22), the opening degree of the intake port (20) by the lid body (21) is changed to change the air supply amount to the Karako (4). The air flow rate (which may be abbreviated to the toumi air volume in the following description) can be changed and adjusted.

Then, an electric motor (M ₂ ) as an actuator for adjusting the air flow rate for changing and adjusting the Toumi air volume is provided,
A linkage mechanism (2 driven by the electric motor (M ₂ )
3) and the operation arm (22) are interlockingly connected by a link mechanism (24). Incidentally, in the figure, (S ₃ ) is a potentiometer for detecting a volume of a Tumi air flow that detects an operation amount of the operation arm (22) as the air flow of the Tumi, and a linkage mechanism (23) driven by the electric motor (M ₂ ). ) Is attached to.

That is, the sorting device (B) adjusts the chaff opening degree to be large or small, and the toumi air volume to be strongly or weakly, so that the amount of the substance to be leaked from the handling chamber (A) is small or large. It is configured so that the sorting state can be adjusted.

Incidentally, although not described in detail, since the threshing device is generally driven by the output of the engine (not shown) before shifting, the grain culm transfer by the feed chain (1A) is performed. The speed is substantially constant regardless of the cutting speed. Therefore, the higher the vehicle speed, that is, the mowing speed, the larger the amount of harvested grain culm, and as a result, the thickness (D) of the grain culm layer conveyed by the feed chain (1A) per unit time.
Becomes big. That is, the thickness (D) of the grain culm layer conveyed by the feed chain (1A) corresponds to the grain culm supply amount (Q) supplied to the handling chamber (A). Therefore, the grain culm supply amount (Q) is detected based on the thickness (D) of the grain culm layer sandwiched and conveyed by the feed chain (1A).

However, the amount of leaked material (VOL) from the handling room (A) is
In addition to the threshing supply amount (Q), it also varies depending on the amount of the second product returned to the handling chamber (A), so the details of the leakage treatment product (VOL) will be described later. It is designed to be calculated based on both the grain culm supply amount (Q) and the second crop amount.

If the configuration for detecting the thickness (D) of the grain culm layer is added, as shown in FIG. 7, the feed chain (1A) is provided at an upper portion in a perspective direction with respect to the grain culm conveying surface. A plurality of holding rails (1B) lined up in the grain transfer direction with the ends thereof being movably supported and connected to each other so as to be rotatable relative to each other, are provided with the feed chain (1A) by a spring (1C). It is provided in a state of being pressed and urged toward each side.

In the figure, (1D) is a rod-shaped support member that supports each of the holding rails (1B) in a vertically movable state with respect to the rail base (1B) on the machine side, and the spring (1C).
Is attached so that its expansion and contraction can be guided by this support member (1D).

Therefore, the distance of movement of the sandwiching rail (1B) with respect to the feed chain (1A) varies depending on the thickness (D) of the grain culm layer sandwiched and conveyed between them. Therefore, a feed amount detection sensor (S ₁ ) using a potentiometer for detecting the distance movement amount as the grain culm layer thickness (D) is located at the conveyance start end side portion of the sandwiching rail (1A), but the feed chain It is attached to detect the amount of perspective movement with respect to (1A).

Next, regarding the control configuration for controlling the sorting state of the sorting device (B) by operating the chaff opening adjusting electric motor ((M ₁ ) and the toumi air volume adjusting electric motor (M ₂ ). explain.

As shown in FIG. 1, a control device (25) using a microcomputer is provided, and the control device (25) displays a sorting state according to the amount (VOL) of the leaked material from the handling room (A). A manually operated automatic switch (SW) for instructing whether or not to automatically adjust, a threshing switch (S ₀ ) which is turned on in association with an operation by entering a threshing clutch (not shown), and the supply amount detecting sensor (S _1), the chaff opening degree detecting potentiometer (S _2), the winnowing fan air amount detecting potentiometer (S _3), the automatic switch (SW) is chaff for manually setting the chaff opening when in the OFF state open Degree potentiometer (S ₄ ) and the automatic switch (SW) are OF
When in the F state, a potentiometer (S ₅ ) for detecting the volume of thyme air for manually setting the volume of thyme, and a target selection state corresponding to the amount of leaked material (VOL) are, for example, wheat, which is rice. Each of the condition setting potentiometers (S ₆ ) for making corrections according to the processing conditions such as whether or not it is wet threshing is connected.

In the figure, (6) is an automatic lamp for displaying whether or not the sorting state of the sorting device (B) is automatically adjusted, and the automatic switch (SW) is turned on. It is designed to be linked and turned on.

Then, the control device (25) controls the automatic switch (S
W) is ON and the threshing switch (S ₀ ) is O
Then, when the threshing clutch is in the engaged state, the both electric motors (M ₁ ) and (M ₂ ) are controlled on the basis of information stored in advance and various input information, and the sorting device ( It is configured to automatically adjust the sorting state of B).

In other words, the controller (25) is used to detect the leaked material amount (VOL) from the handling room (A) as a substitute, based on the detection information of the supply amount detection sensor (S ₁ ). The processed product amount detecting means (100) and the processed product amount detecting means (1
00), the control means for automatically adjusting the sorting state of the sorting device (B) so that the larger the leakage processing amount (VOL) is, the more the sorting state corresponds to the leakage processing amount. 101) and are constructed.

The adjustment of the sorting state of the sorting device (B) will be described. As the amount of harvested grain culm increases and the amount of grain culm introduced into the threshing device increases, the grain culm transported by the feed chain (1A). As the layer thickness (D) increases, the handling room (A)
In this case, the amount of processing processing per unit time in is increased. As a result, the greater the thickness (D) of the grain stalk layer conveyed by the feed chain (1A), the larger the amount of the leakage treated material (VOL) from the handling chamber (A), and the greater the thickness of the grain stalk layer. Thickness (D) and amount of leaked material from the handling room (A) (VOL)
When and correspond, they can be considered.

Therefore, basically, based on the detection information of the supply amount detecting sensor (S ₁ ), a sorting state corresponding to a state in which the larger the grain culm supply amount (Q) is, the larger the leakage processing material amount (VOL) is. In other words, both the toumi air volume and the chaff opening are automatically adjusted at the same time so that the chaff opening becomes large and the toumi air volume becomes large.

However, as described above, the amount (VOL) of the substance to be leaked from the handling room (A) is not limited to the amount (Q) of grain culm supplied to the handling room (A), but also the amount from the sorting device (B). Since it is affected by the amount (F) of the second product returned to the handling room (A),
The reduction amount (F) of the second product is detected, and the leaked substance amount (VOL) is used as both the grain culm supply amount (Q) and the reduction amount (F) detected at every set time. It is based on the detection. In other words, the sorting state of the sorting device (B) is set according to the actual leaked material amount (VOL) leaking from the handling room (A).

By the way, the grain culm located in the position where the thickness (D) of the grain culm layer is detected by the supply amount detecting sensor (S ₁ ) is treated in the handling chamber (A), and the leakage process is performed on the grain culm. The material leaks from the handling room (A) after the first set time (t _x ) determined according to the operating characteristics of the threshing device from the time when the thickness (D) of the grain culm layer is detected. The leakage of the second leak-processed product corresponding to the leak-processed product from the handling room (A) is after a second set time (t _d ) after a further predetermined time.

Therefore, the first memory (103) for storing the grain culm supply amount (Q) up to the first set time (t _x ) and the reduction amount (F) up to the second set time (t _d ). ) Remember the second
The memory (104) is configured as a so-called FIFO type by using a memory (not shown) in the control device (17), and the first memory (103) and the second memory (104) The control loop of the control device (25) makes a cycle every time a preset reference time (set to 0.5 seconds) as the set time elapses so that the stored data is updated every set time. Is done.

Then, as described below, at each reference time, the grain culm supply amount (Q) is calculated based on the grain culm layer thickness (D) detected by the supply amount detection sensor (S ₁ ), and The grain culm supply amount (Q) calculated while deleting the oldest stored data is stored in the first memory (103), and, as described later, the grain culm supply before the first set time (t _x ). Quantity (Q)
Based on the above, the current value of the reduction amount (F) is calculated, and the reduction amount (F) calculated while erasing the oldest stored data is stored in the second memory (104).

Next, the operation of the control device (25) will be described in detail based on the flowchart shown in FIG.

As the control is started, first, it is determined whether or not the automatic switch (SW) is ON, and when the automatic switch (SW) is ON, the automatic lamp (26) is turned on. Then, it is displayed that the sorting state of the sorting device (B) is in the automatically adjusted state.

When the automatic switch (SW) is ON, it is determined whether or not the threshing switch ((S ₀ ) is ON, that is, whether or not the threshing device is in the operating state.

When the threshing switch (S ₀ ) is ON, during the reference time (0.5 seconds), the supply amount detecting sensor (S ₁ )
Based on the average value of the thickness (D) of the grain culm layer detected in
To calculate.

Q = K ₁ · D (i) where K ₁ is a preset constant.

Then, as shown in FIG. 3 (a), the stored data in the first memory (103) is deleted while erasing the oldest value.
Each stored data is sequentially updated to the data after the reference time, and the obtained value of the present grain culm supply amount (Q) is used as the first value.
The latest value (Q (0)) of the memory (103) is stored.

Similarly, as shown in FIG. 3 (b), the reduction amount 8 for each of the reference times stored in the first memory (104).
The value of F) is sequentially updated to the data after the reference time while erasing the oldest data.

After updating the data, as shown in equation (ii) below,
The value of the grain culm supply amount (Q (t _x )) before the first set time (t _x ) stored in the first memory (103) and the value stored in the second memory (104). The second set time (t
_d ) The value obtained by adding the value of the previous grain culm supply amount (Q (t _d )) is calculated as the above-mentioned leakage treated material amount (VOL).

VOL = Q (t _x ) + F (t _d ) ... (ii) In the data updating process, the threshing switch (S ₀ ) is used.
It is done only while it is ON. Therefore, each of the first memory (103) and the second memory (104), as the threshing clutch is next entered and operated,
The grain culm supply amount (Q) and the reduction amount 8 immediately before the cutting operation are performed so that the control can be restarted from the sorting state corresponding to the leakage processed material amount (VOL) immediately before the cutting operation.
The state in which each value of F) is stored is retained.

After calculating the amount of leaked material (VOL), the current toumi air volume and chaff opening detected by the potentiometer (S ₃ ) for detecting the toumi air volume and the chaff opening detection table potentiometer (S ₂ ) are used. Based on the value of the grain culm supply amount (Q (t _x )) before the first set time (t _x ), the reduction rate (K) of the second product returned to the handling room (A) is based on the above. ₂ ) and a reduction rate (K ₄ ) of a second product in which a part of the second product is returned to the handling chamber (A) again after the second set time (t _d ).

However, a part of the leaked processed material from the handling room (A) will be returned to the handling room (A) as a second product, and the leaked processed product corresponding to the reduced second product. Part of
It will be returned to the handling room (A).

Therefore, the reduction rates (K ₂ ) and (K ₄ ) are both less than 1. Further, since the value can be regarded as a substantially constant value corresponding to the sorting state of the sorting device (B), it corresponds to each of the Toumi air volume and the chaff opening degree corresponding to the sorting state, Mapped in advance,
The respective reduction rates corresponding to the respective detection values obtained by the toumi air volume detection potentiometer (S ₂ ) and the chaff opening detection potentiometer (S ₃ ) are read out from the reduction rate calculation map ( (See FIG. 4).

Next, the values of the reduction rates (K ₂ ) and (K ₄ ) calculated with reference to the reduction rate calculation map, and the grain culm supply amount (Q (t) before the first set time (t _x ). _x )) and the reduction amount (F (t _d )) before the second set time (t _d ), the reduction amount 8F (0)) at the present time is calculated from the following formula (iii). Calculate the value and update the value.

F (0) = K ₂ · Q (t _x ) + K ₄ · F (t _d ) ... (iii) Then, after the threshing switch (S ₀ ) changes from OFF to ON, the threshing device (2) It is determined whether or not the set time required for the operation to reach the steady state has elapsed, and if the set time has elapsed, the calculated leakage amount (VO
Based on the value of L) and the setting value by the condition setting potentiometer (S ₆ ), the target values of the Tomumi air volume and the chaff opening are calculated.

The target values of the toumi air volume and the chaff opening are, respectively,
Similar to the calculation of the reduction rate, the value of the leaked substance quantity (VOL) and the condition setting potentiometer (S ₆ ) are set in advance.
The target value is read from the map for setting the target, which is stored in the control device (25) in a state corresponding to the set value according to the above (see FIG. 5). .

However, when the amount of the leaked processed material (VOL) is significantly smaller than the processing capacity of the threshing device, if the chaff opening is set to a small value on the closing side in correspondence with the amount of the leaked processed material (VOL),
Since the amount of damaged grains and grains that are scattered and lost increases, the target value of the chaff opening read from the target setting map is set to the set value (VOL) of the leaked material.
If it is smaller than ₀ ), it is made to be maintained at the set opening on the two-stage opening side than the opening corresponding to the detected leakage processing material amount (VOL) (Fig. 6 (a)). reference). Similarly, the above-mentioned toumi air volume is also maintained at the same air volume as the air volume one step higher than the air volume corresponding to the leaked material volume (VOL) (see FIG. 6 (b)).

That is, the grain culm supply amount (Q) obtained based on the information of the supply amount detecting sensor (S ₁ ) and the reduction amount (F (0)) calculated based on the grain culm supply amount (Q). The processing to calculate the amount of leaked waste (VOL) from the waste is the waste quantity detection means (100)
Will correspond to.

On the other hand, when the threshing auto switch (SW) is ON and the threshing switch (S ₀ ) is OFF, the threshing device is activated when the threshing switch (S ₀ ) changes from OFF to ON next. Until the steady state is reached, the toumi air volume and the chaff opening are set to a preset value corresponding to a low throughput set in advance so that the sorting state corresponds to a state in which the amount of leaked material is small. I am doing it.

In addition, for example, when the reaping work in one work process is completed and the work is moved to the start end portion of the next work process, the threshing clutch may be disengaged and turned.

When the threshing clutch is disengaged, the handling process stops and the amount (VOL) of leaked material from the handling chamber (A) decreases, but as described above, when the threshing switch (S ₀ ) is OFF. Does not update the data of the grain culm supply amount (Q) and the reduction amount (F) for calculating the leaked processed material amount (VOL). When the threshing clutch is turned on after turning and turning the threshing clutch with a large amount of the leaked waste (VOL), the next time the threshing clutch is turned on, the amount of the leaked waste (VOL) is small immediately after the start of the work. Although the work is restarted from, the processing starts immediately from the sorting state corresponding to the state where the leakage processing amount (VOL) is large until the leakage processing amount (VOL) returns to the steady state. During this time, there is a risk that the grain will be scattered outside the threshing device and the third loss will increase.

Therefore, even when the threshing clutch is disengaged,
The target value of the sorting state of the sorting device (B) is maintained at the sorting state corresponding to the case where the leakage processing material amount (VOL) is smaller than the set value (VOL ₀ ).

On the other hand, when the automatic switch (SW) is OFF, the automatic lamp (26) is turned off and the target values of the toumi air volume and the chaff opening are adjusted so that the sorting state is manually adjusted. Is set to a set value manually set by each of the chaff opening adjustment potentiometer (S ₄ ) and the toumi air volume detection potentiometer (S ₅ ).

Then, after setting the respective target values of the toumi air volume and the chaff opening, whether the manual setting or the automatic adjustment is performed, the potentiometer for detecting the chaff opening (S ₂ ) and the toumi wind both Motor operation processing for operating both the selection state adjusting motors (M ₁ ) and (M ₂ ) so that the detection values of the detection potentiometer (S ₃ ) become the respective set target values. Will be done.

After performing the motor operation process, it is determined whether or not a preset reference time has elapsed, and as the reference time elapses, the operation state of the automatic switch (SW) is determined. Each process of is repeated.

That is, each time the reference time as the set time elapses, while updating while storing and storing a plurality of grain culm supply amount (Q) and reduction amount (F) for each of the reference time, the first Supply amount (Q) of grain culm before set time (t _x ),
Based on the reduction amount (F) before the second set time (t _d ), the leaked material amount (VOL) at the present time is calculated, and the selection corresponding to the calculated leaked material amount (VOL) is performed. The control loop makes one round while automatically adjusting the Toumi air volume and the chaff opening so as to be in the state.

That is, the two motors (M ₁ ) and (M _1
The control means (101) corresponds to a series of processes for automatically adjusting the toumi air volume and the chaff opening by activating ₂ ).

[Another embodiment]

In the above embodiment, the grain culm supply amount (Q) before the first set time (t _x ) is multiplied by the reduction rate (K ₂ ) less than 1 and the reduction amount before the second set time (t _d ). Reduction rate (K ₄ ) of less than 1 in (F)
An example is shown in which the value obtained by adding the value obtained by multiplying by is calculated as the reduction amount at the present time. For example, instead of multiplying each reduction rate (K ₂ ), (K ₄ ), the set value May be subtracted.

Further, in the above embodiment, the case where the selection state is controlled in consideration of the second reduction amount is also illustrated, but the selection state is controlled based only on the detection information of the sensor (S ₁ ), It may be simplified.

Further, in the above-described embodiment, the case where the amount of leaked material (VOL) is detected based on the thickness (D) of the grain culm layer supplied to the handling room (A) has been described as an example. It is also possible to use the fact that there is a proportional relationship between the grain culm supply amount and the grain culm supply amount so as to calculate the grain culm supply amount (Q) and the leakage processed material amount (VOL) based on the vehicle speed. The specific structure of 100) can be changed in various ways.

Further, in the above-mentioned embodiment, when the amount of leaked processed material (VOL) is smaller than the set value, the case of not reducing the air flow of the toumi is also exemplified. You may make it reduce according to.

Further, in the above-mentioned embodiment, even when the mowing work such as turning is completed, if the amount of leaked material (VOL) is smaller than the set value, the chaff opening corresponds to the amount of leaked material (VOL). Although the example is shown in which the opening is set to be larger than the set opening, the opening may be set to the opening at the end of the mowing operation.

Further, in the above embodiment, the case where the air intake amount to the Karato (4) is changed and adjusted to adjust the Toumi air volume is illustrated. However, the rotation speed of the Karato (4) is changed to select the air volume. May be adjusted, and the specific configuration of each part, such as the specific configuration for adjusting the blown air volume and the specific configuration for adjusting the opening degree of the chaff sheave (8), may be variously changed.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a sorting control device of a threshing device according to the present invention, FIG. 1 is a block diagram of a control configuration, FIG. FIG. 4 is an explanatory diagram of processing, FIG. 4B is an explanatory diagram of storage processing of a reduction amount, FIG. 4 is an explanatory diagram of a reduction rate calculation map, FIG. 5 is an explanatory diagram of a target value calculation map, and FIG. (A) is an explanatory view of the target value of the chaff opening degree, (b) is an explanatory view of the target value of the Tumi air volume, FIG. 7 is a side view of the threshing device in cutaway, and FIG. 8 is a mechanism for adjusting the chaff opening degree. And FIG. 9 is an explanatory view of the adjusting mechanism of the toumi air volume. (3) ... rocking sorting plate, (4) ... Kara-mino, (8) ... chaff sheave, (8a) ... strip-shaped member, (A) ... handling room,
(S) ... interval, (M ₁ ) ... actuator for interval adjustment, (M ₂ ) ... actuator for air flow adjustment, (10
0) ... Processed material amount detection means, (101) ... control means.

Claims (1)

[Claims] 1. An oscillating sorting plate (3) for sorting the leaked material from the handling room (A), the oscillating sorting plate (3).
Comprises a chaff sheave (8) composed of strip plate members (8a) juxtaposed in the processed material transfer direction, and a space (s) formed between adjacent ones of the strip plate members (8a). ) Is provided for the interval adjustment actuator (M ₁ ) and the processed material amount detecting means (100) for detecting the amount of the processed material supplied to the handling chamber (A). The control means (101) for operating the interval adjusting actuator (M ₁ ) based on the information of the processed material amount detecting means (100) so that the interval (s) becomes larger as
The threshing device selection control device is provided with, the control means (101), if the amount of processed product detected by the processed product amount detection means (100) is smaller than a set value, the interval (s ) Is maintained at a set interval larger than the interval corresponding to the detected amount of processed material, the sorting control device of the threshing device.