JPH072054B2 - Sorting control device for threshing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention allows a sorting device for sorting a leaked substance from a handling room in a threshing device to be freely adjusted to a sorting state according to the amount of the leaked substance. Provided, a transport device for sandwiching and transporting the grain stalks along the grain stalk supply path to the handling chamber, and a sensor for detecting the thickness of the grain stalk layer sandwiched and transported by the transport device,
A sorting state control means that automatically adjusts the sorting state of the sorting device based on the detection information of the sensor is provided so that the thicker the grain culm layer is, the more the sorting state corresponds to the amount of the leakage processing material. The transport device is supported by a feed chain that locks and transports the grain culms, and is movably supported in a perspective direction with respect to a transport surface of the feed chain, and end portions thereof are connected to each other so as to be rotatable relative to each other. And a plurality of nipping rails lined up in the grain culm conveying direction and elastic bodies that press and urge each of the nipping rails individually toward the feed chain side, and nipping on the conveying start end side. The present invention relates to a sorting control device for a threshing device in which the biasing force of an elastic body of a rail is smaller than the biasing force of an elastic body of another sandwiching rail.

[Conventional technology]

The sorting control device of this type of threshing device, the larger the thickness of the grain culm to be supplied to the handling room, the greater the amount of the leakage processing material, and therefore, based on the thickness of the grain culm layer supplied to the handling room. The selection state is automatically adjusted.

By the way, since the grain culm is conveyed while being sandwiched between the feed chain and the sandwiching rail, there is a risk that the grain culm may be crushed on the conveying end side,
The distance between the feed rail and the pinching rail located closest to the transport start end where the grain culm layer is less crushed is detected as the grain culm layer thickness.

[Problems to be Solved by the Invention]

However, if the sensor that detects the thickness of the grain culm layer is installed so as to detect the distance movement of the nipping rail located closest to the transport start end side with respect to the feed chain, the urging force of the nipping rail located closest to the transport start end is weak. Therefore, the sensor may malfunction.

If the explanation is added, the sandwiching rail located closest to the conveyance start end side is in a state where the grain culm supply amount per unit time is small, that is, even when the grain culm layer has a small thickness, In order to smoothly carry it into the feed chain, it is configured to be elastically biased toward the feed chain with a biasing force weaker than the biasing force with respect to the other holding rails.

By the way, when the relationship between the distance of movement of the nipping rail with respect to the feed chain (thickness of the grain culm layer) and the actual amount of grain culm supplied was measured by various experiments, it was found that the nipping rail located closest to the transport start end side is shown in Fig. 3. It was found that there is a disadvantage that the inclination is gentle and the detection error with respect to the supply amount becomes large as indicated by the broken line in FIG. In the figure, the solid line indicates the relationship between the distance and the actual feed amount of the second nipping rail, which is located between the transport start end and the transport end, and the detected value for the change in the feed amount. The steepness of the gradient becomes sharper and the linearity of the detected value with respect to the supply amount becomes better. Also, the imaginary line shows the relationship between the distance movement of the sandwiching rail located at the end of the most conveyance and the actual supply amount. However, since the grain culm to be conveyed is crushed toward the conveyance end side The detection error at the time of the low supply amount is large, and the change of the detection value with respect to the flow rate has a gradual inclination as in the case of the conveyance start end.

The present invention has been made in view of the above circumstances, and an object thereof is to improve the detection accuracy of the thickness of the grain culm layer.

[Means for Solving the Problems]

The threshing device sorting control device according to the present invention is a threshing device, wherein a sorting device for sorting the leaked processed material from the handling chamber is provided so as to be adjustable to a sorting state according to the leaked processed material amount. A transport device for sandwiching and transporting the grain stalks along the grain stalk supply path to the stalk, a sensor for detecting the thickness of the grain stalk layer sandwiched and transported by the transport device, and the greater the thickness of the grain stalk layer, the greater A sorting state control means for automatically adjusting the sorting state of the sorting device based on the detection information of the sensor is provided so that the sorting state corresponds to the leakage processed material amount, and the transporting device, the grain culm. A feed chain that is locked and transported, and a plurality of feed chains that are movably supported in the perspective direction with respect to the transport surface of the feed chain and that are aligned in the grain culvert transport direction with their ends connected to each other so that they can rotate relative to each other. Sandwiching And an elastic body for individually biasing each of the holding rails toward the feed chain side, and the urging force of the elastic body of the holding rail on the conveyance start side is the elasticity of other holding rails. It is configured to be smaller than the urging force of the body, and its characteristic configuration is
It is as follows.

That is, the sensor is configured to detect the distance movement of the nipping rail supported by the elastic body whose biasing force is set to be larger than that of the elastic body immediately after the elastic body of the nipping rail on the transport start end side. There is a point.

[Action]

As described above, at the transport start end and the transport end, the relationship between the actual grain culm supply amount and the grain culm layer thickness cannot be accurately detected, but immediately after the elastic body of the sandwiching rail on the transport start end side. In the sandwiching rail supported by the elastic body whose biasing force is set larger than that of the elastic body, it is possible to accurately detect the relationship between the distance of the sandwiching rail with respect to the feed chain and the thickness of the grain layer. , Confirmed by various experiments (see FIG. 3). Further, since the sandwiching rail that detects the distance movement amount is located near the conveyance start end of the feed chain, control of the sorting state of the sorting device based on the detection result can be performed without delay.

〔The invention's effect〕

Therefore, by modifying the rational arrangement of the sensor for detecting the thickness of the grain culm layer, it is possible to accurately detect the thickness of the grain culm layer, and it is possible to control the sorting state based on the detection result of the sensor without delay, The sorting accuracy has also been improved.

〔Example〕

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

As shown in FIG. 10, the threshing device (2) is mounted on the upper part of the machine body (V) equipped with the crawler traveling device (1), and the cutting section (3) is the front part of the machine body (V). Is attached to the combine to form a combine.

The cutting unit (3) includes a raising device (4), a cutting blade (5) for cutting the root of the grain culm, and a transport device (6) for transporting the harvested grain culm to the rear of the machine body.

As shown in FIG. 11, the output of the engine (E) mounted on the machine body (V) is transmitted to the grain culm device (2) via a belt tension type grain culm clutch (7), and , Is transmitted to a traveling transmission (9) of the crawler traveling device (1) via a belt tension type traveling clutch (8).

Further, a part of the output transmitted to the traveling transmission (9) is transmitted to the mowing section (3) via a belt tension type mowing clutch (10).

However, although not described in detail, the forward / backward switching and the speed change of the machine body (V) are artificially adjusted by manually operating the traveling transmission (9).

As shown in FIG. 2, the threshing device (2) includes a handling barrel (1
A handling room (1) for accommodating (1), and a transport device (1) for sandwiching and transporting a laterally tilted grain culm supplied from the reaping section (3).
2), a cross-flow fan (13) for dust removal, a sorting device (B) consisting of a toumi (14) and an oscillating sorting plate (15), a grain recovery mouth 1 (16), and sorting Each is provided with a grain recovery port 2 (17) for returning the recovered secondary product to the handling chamber (A).

By the way, since the threshing device (2) is driven by the output of the engine (E) before shifting, the grain culm transport speed by the transport device (12) is limited to the cutting speed. Instead, the speed is almost constant. Therefore, the higher the vehicle speed, that is, the cutting speed, the larger the amount of harvested culm, and as a result,
The thickness (D) of the grain culm layer transferred by the transfer device (12) per unit time becomes large. That is, the thickness (D) of the grain culm layer transported by the transport device (12) 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 conveying device (12).

If the transfer device (12) is further described, as shown in FIGS. 1 and 2, a feed chain (which locks and transfers the grain stems with the lateral side of the handling chamber (A) facing the rear of the machine ( 12
A) and a plurality of the feed chains (12A), which are supported in a state of being movable in the perspective direction with respect to the conveying surface, and are arranged in the grain transfer direction in a state in which the end portions are connected to each other so as to be rotatable relative to each other. Sandwiching rails (12B) and those sandwiching rails (1
2B) springs (12C) as elastic bodies for pressing and urging each of them toward the feed chain (12A) side.
It has and.

In the figure, (12D) is a rod-shaped support member that supports each of the sandwiching rails (12B) in a vertically movable state with respect to the rail base (12E) on the machine side, and includes the spring (12D).
C) is attached so that its expansion and contraction can be guided by this support member (12D). Further, in FIG. 1, the feed chain (12A) and the sandwiching rail (12B) are vertically separated from each other, but in reality, they are in close contact with each other.

Therefore, the distance of movement of the sandwiching rail (12B) with respect to the feed chain (12A) varies depending on the thickness (D) of the grain culm layer sandwiched and conveyed between them. Therefore, a supply amount detecting sensor (S ₁ ) using a potentiometer as a sensor 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 (12B). It is attached to detect the distance movement with respect to the feed chain (12A).

However, in order to smoothly transfer the grain culm from the transfer device (6) of the mowing section (3) to the transfer device (12) of the threshing device (2), the holding rail (12B) on the transfer start end side.
The biasing force of the spring (12C) against the other holding rail (12B) is smaller than the biasing force of the spring (12C) against the other sandwiching rail (12B).

Therefore, if the distance of the holding rail (12B) located on the transport start end side is detected, the erroneous operation may occur due to the weak biasing force, as shown in FIG. In addition, since the grain culm is conveyed while being sandwiched between the feed chain (12A) and the sandwiching rail (12B), the grain culm is crushed toward the end of the conveyance, and the grain culm layer is crushed at the end of the conveyance. If the thickness (D) is detected, there is a fear of malfunction as well.

Therefore, the supply amount detection sensor (S ₁ ) is provided with a conveyance start end and a conveyance end of the sandwiching rail (12B) in which the deformation of the grain culm layer is small and the biasing force of the spring (12C) is not small. As the intermediate position, the nipping rail (12B) located second from the conveyance start end, that is, immediately after the nipping rail (12B) at the conveyance start end, the urging force of the spring (12C) is applied to the conveyance start end as shown in FIG. The member is attached so as to detect the distance movement of the holding rail (12B), which is set to be larger than the biasing force of the spring (12C) with respect to the holding rail (12B), with respect to the feed chain (12A).

If the mounting structure of the sensor (S ₁ ) is further described, as shown in FIG. ₁ , the rotation shaft (12F) of the sensor (S ₁ ) mounted on the rail base (12E) and the transport start end portion. The upper end portion of the support member (12D) of the nipping rail (12B) located next to is linked and linked by a link mechanism (12G). Incidentally, in the figure, (12H) is a nut for fixing the link mechanism (12G) to the support member (12D), and by adjusting the vertical fixing position of the link mechanism (12G). The reference output value of the sensor (S ₁ ) in the non-conveyed grain culm state is set to be the set value. The process for setting this reference value will be described later.

As shown in FIG. 2, a grain screening net (18) is provided in the lower part of the handling room (A), and the handling room (A) is provided at the end of the handling room (A). The discharge port (19) for discharging the remaining processed material in () is opened.

However, in the following description, the processed products that leak through the receiving net (18) and the processed products discharged through the discharge port (19) are collectively referred to as the amount of processed products leaked from the handling chamber (A).

The swing selection plate (15) is located above the toumi (14), the chaff sheave (21) located subsequent to the Glenpan (20), and the chaff sheave (21). The Straw rack (22), the auxiliary Glen pan (23) located below the starting end side of the chaff sheave (21), and the Glen sheave (24) located subsequent to the auxiliary Glen pan (23) are provided respectively, It is attached between a pair of side plates (25).

In FIG. 2, (26) is a discharge pan Glen pan which is arranged so as to face the discharge port (19), (27) is located following the Glen pan (26), and is laterally arranged. A plurality of rods arranged side by side, and the Glen pan (26) and the rod (27) thereof are rocked together with the rocking selection plate (15). Further, (28) is a rotary body with a blade that acts on the object to be processed on the rod (27).

The sorting device (B) is connected to the chaff sheave (2
By adjusting the interval (S) of 1) to large and small and adjusting the amount of sorting air from the toumi (14) to strong and weak, the sorting state can be adjusted according to the amount of leaked material from the handling room (A). Is configured to be adjustable.

First, a structure for adjusting the interval (S) of the chaff sheave (21) to a large or small size will be described.

As shown in FIGS. 12 to 14, the chaff sheave (2
1) is composed of strip-shaped members (a) and (a ') juxtaposed in the process transfer direction, and between the strip-shaped members (a) and (a') adjacent to each other. The space (S) formed is adjustable and adjustable.

In addition, a plurality of strip plate members (a), (a ')
The upper end portion of one of the strip plate members (a ') is fitted onto the fulcrum shaft (29) penetrating the pair of left and right side numbers (25), and the strip plate member (a'). ), A connecting pin (30) penetrating through the long hole (b) formed in the side plate (25) is fixed to each of both ends on the lower end side.

A pair of left and right links (31) externally fitted to the fulcrum shaft (29) and the connecting pin (30) are provided, and an operation arm (32) is attached to one of the pair of left and right links (31). Has been.

The other strip plate members (a) other than the one strip plate member (a ') are attached to the side plate (25) by using U-shaped attachment fittings (33).

That is, in the U-shaped mounting member (33), the shaft portion (33a) on the upper end side is penetrated and fixed to the side plate (25), and
The shaft portion (33b) on the lower end side is configured to penetrate the elongated hole (b) formed in the side plate (25). And
Both end portions on the lower end side of the other strip plate member (a) are externally fitted to the shaft portion (33b) on the lower end side of the mounting bracket (33).

The connecting pin (30) and the shaft portions (33b) on the lower end side of the plurality of mounting brackets (33) are connected by a linking plate (34), so that the respective band plate members (a), (a '). ) Are integrally swung with their upper ends as fulcrums, so that the interval (S) is changed and adjusted.

A chaff adjusting electric motor (M ₁ ) for changing and adjusting the interval (S) is provided on the fixed frame side of the threshing device (2), and the closing side where the interval (S) is small. A spring (35) for urging the operating arm (32) is connected to the operating arm (32), and the operating arm (32) and the screw shaft (36) driven in the forward and reverse directions by the electric motor (M ₁ ) are engaged with each other. The frame member (37) is connected by a release wire (38).

In FIG. 12, (S ₂ ) is a chaff opening detection potentiometer for detecting the adjustment state of the interval (S) as a position change of the top member (37), and its operation lever (3
The free end of 9) is connected to the top member (37).

Further, (40a) and (40b) are switches that are pressed by the operation lever (39) when the interval (S) reaches the adjustment limit, and are for automatically stopping the electric motor (M ₁ ). It is provided in.

Explaining a configuration for adjusting the selection air volume by the toumi (14) strongly, the toumi (14) is configured so that the rotation speed thereof can be changed to change and adjust the selection air volume.

In addition, as shown in FIGS. 15 and 16, the input pulley (41) attached to the rotary shaft (14A) of the toumi (14) has a pair of left and right pulley portions (41a), (41b). ) And a pair of left and right pulley parts (41
It is configured as a so-called split pulley type transmission (42) for changing and adjusting the rotation speed of the toumi (14) by changing and adjusting the interval between a) and (41b).

One of the pair of left and right pulley portions (41a) and (41b) (41
a) is fixed to the rotating shaft (14A) and the other (41b)
Is fitted so as to be slidable in the axial direction of the rotary shaft (14A).

However, the other sliding-side pulley portion (41b) is connected to the fixed-side one pulley portion (41a) by a connecting pin (45).
And the pulley parts (41a) and (41b) are
It is possible to change and adjust the interval while rotating integrally.

The structure for changing and adjusting the distance between the pulley parts (41a) and (41b) will be described. The first cam attached to the boss part of the sliding pulley part (41b) using a bearing (46). Forming member (47) and the threshing device (2)
And the second cam forming member (48) attached to the fixed frame side of the two pulley parts (41a) and (41b) are moved in perspective by the rotation of the first cam forming member (47). Cam projections (47a) and (48a) for forming the cam projections are formed (see FIG. 17).

An electric motor (M ₂ ) for adjusting the air volume is attached to the fixed frame side of the threshing device (2), and an operation arm (49) for gear shift operation is attached to the first cam forming member (47). Is
The operation arm (49) and the top member (51) that meshes with the screw shaft (50) that is driven in the forward and reverse directions by the electric motor (M ₂ ) are interlocked and connected by the release wire (52),
The first cam forming member (47) is rotationally operated by the electric motor (M ₂ ) for adjusting the air volume, and the rotational speed of the toumi (14) is changed and adjusted.

In FIG. 15, (43) is a transmission pulley that transmits the output of the engine (E) to the input pulley (41), (44) is a tension pulley, and (S ₃ ) is a speed change state, that is, the sorting air flow is A potentiometer for detecting a volume of a toumi air flow, which is detected as a change in position of a top member (52), and which has an operating lever (5
The free end of 3) is connected to the top member (52). Further, (54a) and (54b) are switches that are pressed by the operation lever (53) when the top member (52) reaches the gear shift limit, and automatically stop the electric motor (M ₂ ). It is provided for.

Next, the electric motor (M ₁ ) for adjusting the spacing of the chaff sheave (21) and the electric motor (M ₂ ) for adjusting the sorting air volume of the toumi (14) are operated to sort by the sorting device (B). A control configuration for controlling the state will be described.

As shown in FIG. 4, a control device (55) utilizing a microcomputer is provided, and the control device (55) is provided with a sorting state according to the amount (VOL) of 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 the operation of engaging the threshing clutch (7), and the supply amount detecting sensor (S ₁ ), The chaff opening detection potentiometer (S ₂ ), the toumi air volume detection potentiometer (S ₃ ), and the chaff opening for manually setting the chaff opening when the automatic switch (SW) is in the OFF state. Adjustment potentiometer (S ₄ ), automatic switch (SW) is OF
When in the F state, the potentiometer (S ₅ ) for adjusting the volume of the Tumi air volume for manually setting the air volume of the Tumi, and the target selection state corresponding to the amount of the leakage treated material (VOL) are, for example, rice or wheat. Each of the condition setting potentiometers (S ₆ ) for making corrections according to the processing conditions such as whether there is or is a wet culm is connected.

In addition, in the figure, (56) is an automatic lamp for displaying whether or not the sorting state of the sorting device (B) is in the state of being automatically adjusted, and the automatic switch (SW) is turned on. It is designed to be linked and turned on.

Then, the control device (55) controls the automatic switch (S
W) is ON and the threshing switch (S ₀ ) is O
N and when the threshing clutch (7) is in the engaged state,
It is configured to control the electric motors (M ₁ ) and (M ₂ ) on the basis of preset information stored in advance and various input information to automatically adjust the sorting state of the sorting device (B). ing.

That is, using the control device (55), the handling room (A) is detected based on the detection information of the supply amount detecting sensor (S ₁ ).
The sorting state of the sorting device (B) is such that the amount of leaked material (VOL) from the product is detected and the larger the amount of leaked material (VOL) is, the more the sorted state corresponds to the amount of leaked material. The selection state control means (100) that automatically adjusts is configured.

However, as will be described later in detail, the amount of leaked material (VOL)
Is corrected to a value according to the amount of the second reduced product.

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 (2) increases, the feed chain (12
The thickness (D) of the grain culm layer conveyed in (A) becomes large, and the handling amount per unit time in the handling room (A) increases. As a result, the feed chain (12
The larger the thickness (D) of the grain culm layer transported in A), the larger the amount of leaked material (VOL) from the handling room (A),
It can be considered that the thickness (D) of the grain culm layer and the amount (VOL) of the leaked material from the handling room (A) correspond to each other.

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, so that the opening of the chaff sheave (21) becomes large and the sorting air volume by the toumi (14) becomes large, both the toumi air volume and the chaff opening are automatically adjusted at the same time. I am doing it.

However, the amount of leaked material (VOL) from the handling room (A) is
Being influenced by not only the amount of grain culm supplied to the handling room (A) (Q) but also the amount of reduction (F) of the second product returned from the sorting device (B) to the handling room (A). The amount of reduction (F) of the second product is detected from the
Is detected based on both the grain culm supply amount (Q) and the reduction amount (F) detected at every set time. 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 matter leaks from the handling room (A) when the first set time (t) is determined from the detection operation time of the thickness (D) of the grain culm layer according to the operation characteristics of the threshing device (2). _x ) Later, the leakage of the second leaked substance corresponding to the leaked substance leaks from the handling room (A) until the second set time (t _d ) after a further predetermined time. It will be later.

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 using a memory (not shown) in the control device (55), and the first memory (103) and the second memory (10) are configured.
4) Each time the control loop of the control device (55) has passed a preset reference time (set to 0.5 seconds) as a set time so that each stored data is updated every set time. I'm going to make a round.

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 amount for the first set time (t _x ). Based on (Q), 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). There is.

Next, the operation of the control device (55) 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 (56) 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 the threshing switch (S ₀ ) is ON, that is, whether the threshing device (2) 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. 7A, 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 stored as the latest value (Q (0)) of the first memory (103).

Similarly, as shown in FIG. 7 (b), the value of the reduction amount (F) stored in the second memory (104) for each reference time is changed while deleting the oldest data. The stored data is sequentially updated to the data after the reference time.

After updating the data, as shown in (ii) below, the grain culm supply amount (Qt _x ) before the first set time (t _x ) stored in the first memory (103) Value and the second set time (t _d ) stored in the second memory (104)
The value obtained by adding the value of the previous reduction amount (F (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) causes the amount of the leaked processed material (VO) immediately before the turning operation as the threshing clutch (7) is operated next.
L) so that control can be resumed from the selected state.
The state of storing and retaining the respective values of the grain culm supply amount (Q) and the reduction amount (F) until immediately before the cutting operation is continued.

After calculating the leakage processing material (VOL), the current toumi air volume and chaff opening detected by the toumi air volume detection potentiometer (S ₃ ) and the chaff opening detection potentiometer (S ₂ ) are calculated. 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. Will be returned to the handling room (A) again.

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), as shown in FIG. 8, the toumi air volume and chaff corresponding to the sorting state are set. Corresponding to each of the opening, it has been mapped in advance, the respective reduction rate values corresponding from the respective detection values by the potentiometer for detecting the air flow of the toumi (S ₃ ) and the potentiometer for detecting the chaff opening (S ₂ ),
The reduction rate calculation map is read out.

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

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

However, as shown in FIG. 9, the respective target values of the toumi air volume and the chaff opening degree are the same as in the calculation of the reduction rate,
In advance, a map is made in a state corresponding to the value of the amount of leaked material (VOL) and the setting value by the condition setting potentiometer (S ₆ ) and stored in the control device (55), and its target is set. The target value is read from the map for setting and set.

On the other hand, when the automatic switch (SW) is ON and the threshing switch (S ₀ ) is OFF, the threshing switch (S _{0
When 0} ) changes from OFF to ON, the threshing device (2)
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 as to be in a sorting state corresponding to a state in which the amount of leaked material is small. I am doing it.

In addition, for example, when the mowing work in one working process is completed and the work is moved to the start end of the next working process, the threshing clutch (7) can be turned to rotate. is there.

When the threshing clutch (7) is disengaged, the handling process is stopped and the amount (VOL) of leaked material from the handling chamber (A) is reduced, but as described above, the threshing switch (S ₀ ) is OF
In the case of F, since the data of the grain culm supply amount (Q) and the reduction amount (F) for calculating the leakage treated product amount (VOL) are not updated, After the threshing clutch (7) was turned off and turned in a state where the amount of leaked waste (VOL) was large up to immediately before, the next time the threshing clutch (7) was turned on and operated, there was a leak immediately after the start of work. Even if the work is restarted from a state where the volume of processed waste (VOL) is small, the amount of leakage processed material is immediately started from the sorting state corresponding to the state where the volume of processed waste (VOL) is large. By the time the (VOL) returns to the steady state, there is a risk that the grain will be scattered outside the threshing device (2) and the third loss will increase.

Therefore, as the threshing clutch (7) is operated to be disengaged, the target value of the sorting state of the sorting device (B) is set to the sorting state corresponding to the small throughput.

On the other hand, when the automatic switch (SW) is off, the automatic lamp (56) is turned off, and the target values of the toumi air volume and the chaff opening are set 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 adjustment potentiometer (S ₅ ).

Then, after setting each of the target value of the chaff opening and the target value of the chaff opening, the chaff opening detecting potentiometer (S ₂ ) and the toumi air quantity are set regardless of manual setting or automatic adjustment. 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.

That is, the target values of the toumi air volume and the chaff opening are set in accordance with the leakage processed material volume (VOL), and both the sorting state adjusting motors (M ₁ ) and (M ₂ ) are operated. The motor operation process corresponds to the selection state control means (100).

However, although not described in detail, the flow rate of the toumi is configured to be changed and adjusted by the split pulley type transmission (42). Therefore, when the threshing clutch (7) is in the disengaged state, The structure is such that the air volume cannot be adjusted. Thus, in the motor operation process, the threshing switch (S ₀₎ is to determine whether or not the ON, when said threshing switch (S ₀₎ is not ON, the winnowing fan airflow for adjusting motor (M ₂ ) will maintain the stopped state at the current operating position.

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 elapses as the set time,
Grain culm supply amount (Q) before the first set time (t _x ) while updating while storing and storing a plurality of grain culm supply amounts (Q) and reduction amounts (F) for each reference time And the amount (F) of reduction before the second set time (t _d ) is calculated, and the amount of leaked substance (VOL) at the present time is calculated, and corresponding to the calculated amount of leaked substance (VOL). While automatically adjusting the Toumi air volume and chaff opening so that the selected state is obtained,
The control loop goes around once.

By the way, as described above, in the state where the thickness of the grain culm layer 8D) is zero, the conveying surface of the feed chain (12A) and the sandwiching rail (12B) are in contact with each other,
A link mechanism (12G) that connects the support member (12D) of the sandwiching rail (12B) adjusted during assembly with the rotating shaft (12F) of the sensor (S ₁ ) due to wear or the like of each part during use.
The fixed position of may change. When the fixed position changes,
Even if the grain culm is in the non-conveying state, the sensor (S ₁ ) erroneously detects that the grain culm layer has a thickness (D).

Therefore, as shown in FIG. 6, when the power is turned on in the grain culm non-conveying state, first, the initial value (Vx) detected by the sensor (S ₁ ) is read by the control device (55), and the value is read. Is set and stored as a reference value (V ₀ ) corresponding to a grain culm layer thickness (D) of zero, and then stored as the output value (V _R ) of the sensor (S ₁ ) and the stored reference value (V ₀ ). _Is processed as a detection value (D = V _d ). However, if the output value (V _R ) is smaller than the stored reference value (V ₀ ), it is determined that the stored reference value has an error, and the output value (V _R ) is set as a new reference value. It is stored as a value (V ₀ ).

Therefore, even if the reference value of the sensor (S ₁ ) when the thickness (D) of the grain culm layer is zero deviates from the set value at the time of assembly due to wear or the like caused by use, a detection error can be prevented.

[Another embodiment]

In the above-described embodiment, the sensor (S ₁ ) for detecting the thickness (D) of the grain culm layer is used to detect the distance movement with respect to the feed chain (12A), which is located second from the conveyance start end of the holding rail (12A). Although the configuration is described as above, the specific attachment position and attachment structure can be variously changed as long as the distance movement amount of the object located between the transport start end and the transport end can be detected. Similarly, the sensor (S ₁ ) can be of various types in addition to the potentiometer.

Further, in the above embodiment, the value obtained by multiplying the grain culm supply amount (Q) before the first set time (t _x ) by the reduction rate (K ₂ ) of less than 1 and the value before the second set time (t _d ). An example is shown in which a value obtained by adding a value obtained by multiplying the reduction amount (F) of 1 by a reduction ratio (K ₄ ) of less than 1 is calculated as the reduction amount at the present time. Instead of multiplying K ₂ ) and (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-mentioned embodiment, the case where both the toumi air volume and the chaff opening degree are adjusted to adjust the sorting state of the sorting apparatus (B) is illustrated, but either the toumi air volume or the chaff opening degree is adjusted. Only one of them may be adjusted.

Further, in the above embodiment, the case where the split pulley type speed change device (42) is used to change the rotational speed of the toumi (14) to adjust the sorting air volume is exemplified. (14) may be driven by a variable speed device such as an electric motor, and a specific configuration for adjusting the sorting air volume and a specific configuration for adjusting the opening degree of the chaff sheave (21), The specific configuration for adjusting the sorting state of the sorting device (B) can be changed in various ways.

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 for a threshing device according to the present invention, FIG. 1 is a schematic side view of a conveying device showing a mounting configuration of a supply amount detecting sensor, and FIG. 2 is a cutaway side view of the threshing device. FIG. 3 is an explanatory view of the detection characteristics of the sensor, FIG. 4 is a block diagram of the control configuration, FIG. 5 is a flow chart of control operation, FIG. 6 is a flow chart of correction processing of the sensor detection value, and FIG. ) Is an explanatory diagram of a storage process of the grain culm supply amount, FIG. 8B is an explanatory diagram of a storage process of the reduction amount, FIG. 8 is an explanatory diagram of a reduction rate calculation map, and FIG. 9 is a target value calculation map. Fig. 10, Fig. 10 is a schematic side view of the combine, Fig. 11 is a transmission system diagram, Fig. 12 is a cutaway side view showing the structure of the chaff sheave, Fig. 13 is an enlarged side view of the essential parts thereof, and Fig. 14 FIG. 15 is a developed plan view showing the mounting structure of the band plate member, and FIG. Figure, FIG. 16 notch front view of the input pulley of the winnowing fan, FIG. 17 is a developed plan view of the cam member. (A) …… Handling room, (B) …… Sorting device, (VOL) …… Leakage processing amount, (S ₁ ) …… Sensor, (2) …… Threshing device,
(12) …… Conveyor, (12A) …… Feed chain,
(12B) …… Clamping rail, (12C) …… Elastic body, (100)
...... Selection state control means.

Claims (1)

[Claims] 1. A thresher (2) is provided with a sorting device (B) for sorting the leaked material from the handling room (A) so that it can be adjusted to a sorting state according to the leaked quantity (VOL). The
A transport device (12) for sandwiching and transporting the grain culm along the grain culm supply path to the handling room (A), and a sensor (S for detecting the thickness of the grain culm layer sandwiched and transported by the transport device (12). ₁ )
Then, the sorting state of the sorting device (B) is automatically set based on the detection information of the sensor (S ₁ ) so that the thicker the grain culm layer is, the more the sorting state corresponds to the amount of the leakage processing material. A sorting state control means (100) for adjusting is provided, and the carrying device (12) is a perspective view with respect to a feed chain (12A) for locking and carrying the grain stem and a carrying surface of the feed chain (12A). A plurality of holding rails (12B) lined up in the grain transfer direction in a state of being supported movably in a direction and having end portions connected to each other so as to be rotatable relative to each other, and each of the holding rails (12B). The feed chain (12
And a biasing force of the elastic body (12C) of the nipping rail (12B) on the conveyance start end side, which is composed of an elastic body (12C) that separately presses each other toward the (A) side. Of the elastic body (12C) is configured to be smaller than the urging force of the elastic body (12C) of the threshing device, wherein the sensor (S ₁ ) is an elastic body (12C) of the holding rail (12B) on the transport start end side. ), The elastic body (1C) is set to have a larger biasing force than the elastic body (12C).
2C) A sorting control device for a threshing device configured to detect a distance movement of a sandwiching rail (12B) supported by 2C).