JPH0630644A - Threshing and grading controller - Google Patents

Abstract

PURPOSE:To obtain a threshing and grading controller capable of readily and accurately carrying out setting of the target value in automatic control of ability of a grading apparatus. CONSTITUTION:In the threshing and grading controller, a control means H for carrying out increasing and reducing control so as to approach present value of treating ability of a grading apparatus detected by a present value detecting means (chaff opening sensor) S3 to the target value is provided. The control means H is constituted so as to obtain the target value by correcting the standard target value set by the standard target value means, based on the detection data of grain culms feed amount detecting means S6 (number of revolutions of engine) and S7 (car rate sensor) for detecting grain culms amount fed to a threshing chamber and the detection data of a layer thickness detecting means S8 for detecting layer thickness of treated material on an oscillating and grading plate provided in the grading apparatus. The standard target value setting means consists of a water content setting means 45 for setting moisture of crops and a degraining setting means 46 for setting degraining ability of crops. The control means H is constituted so as to set the standard target value on the side capable of increasing treating ability of the grading apparatus as moisture of crops becomes higher and correct the target value to the side capable of increasing treating ability of the grading apparatus as it becomes difficult to degrain these crops.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with control means for increasing / decreasing the present value of the processing capacity of the sorting apparatus detected by the present value detecting means so as to approach the target value. The reference target value set by the reference target value setting means, the detection information of the grain culm supply amount detection means for detecting the grain culm supply amount to the handling room, and the processing on the swing sorting plate provided in the sorting device. The present invention relates to a threshing selection control device configured to obtain the target value by performing correction based on the detection information of the layer thickness detection means for detecting the layer thickness of an object.

[0002]

2. Description of the Related Art Conventionally, it has been conventionally performed to increase or decrease the processing capacity of a threshing selection device (hereinafter, simply referred to as a selection device) according to the amount of grain culm supplied to a handling room. For example, in the case of a combine, the grain culm supply amount is estimated from the traveling speed and the engine load, and the processing capacity of the sorting device, that is, the leakage opening of the swing sorting plate is adjusted. Further, there is also one in which feedback control is added to adjust the processing capacity so that the layer thickness falls within an appropriate range, based on the detection information of the layer thickness sensor that detects the layer thickness of the processing object on the swing selection plate.

In this case, generally, a target value which is manually set by the reference target value setting means according to the condition of the crop to be harvested is corrected based on the grain culm supply amount and the layer thickness of the processed material. As a value, the operation amount for adjusting the processing capacity is calculated based on the deviation between the current value of the processing capacity of the sorting device (for example, the leakage opening of the swinging sorting plate) and the target value. The reference target value setting means is, for example, the adjustment V
R (variable resistance) is used.

[0004]

The setting of the reference target value by the above-mentioned reference target value setting means must be carried out in consideration of a plurality of factors such as the wetness of crops (particularly rice) and the ease of shedding, It required some skill. For this reason, the operability is poor for an unfamiliar worker and there is room for improvement.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a threshing selection control device capable of easily and accurately setting a reference target value in automatic adjustment of the capacity of the selection device. To provide.

[0006]

The threshing selection control device according to the present invention is provided with control means for increasing / decreasing the present value of the processing capacity of the selection device detected by the present value detecting means so as to approach the target value. The control means, the reference target value set by the reference target value setting means, detection information of the grain culm supply amount detecting means for detecting the grain culm supply amount to the handling room, and the sorting device are provided. It is configured to obtain the target value by performing correction based on the detection information of the layer thickness detecting means for detecting the layer thickness of the processed object on the swing selection plate, and the characteristic configuration thereof is The reference target value setting means, a moisture setting means for setting the moisture of the crop, and a shattering setting means for setting the ease of shattering of the crop, the control means,
The reference target value, based on the set value of the moisture setting means, as the wetness of the crop is set to the processing capacity increase side of the sorting device, and based on the set value of the shedding setting means, the crop is The point is that it is configured such that the more difficult it is to shed particles, the more the processing capacity of the sorting apparatus is increased.

[0007]

According to the above-mentioned characteristic configuration, the operator may set the moisture content of the crop by the water content setting means and set the easiness of shedding the crop by the shedding setting means. Then, the control means
Based on the set value of the moisture setting means and the set value of the shedding setting means, the reference target value is obtained according to a predetermined relationship. Especially when the crop is rice, moistness and easiness of shedding are the most important factors for controlling the processing capacity of the sorting device within an appropriate range, and if these two parameters are set appropriately, the appropriate standard target will be achieved. The value will be set automatically.

[0008]

As described above, according to the present invention, the standard target value in the automatic adjustment of the capacity of the sorting apparatus can be set easily and appropriately according to the wetness of the crop and the ease of threshing. We have come to provide a sorting control device.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 2 shows a side view of a combine to which the present invention is applied. This combine harvester is a normal combine harvester that harvests rice, wheat and soybean. A cockpit 2, a threshing device 3 and the like are mounted on a machine body V provided with a pair of left and right crawler traveling devices 1, and a cutting device 4 is provided in front of the machine body V so as to be vertically movable. The mowing device 4 is provided with a weeding tool 5, a scraping device 6, a mowing blade 7, an auger 8 for collecting the crops collected in the lateral center of the machine body, and a conveyor 9 for conveying the collected crops to the threshing device 3. ing.

The threshing device 3 includes a threshing section (hereinafter, referred to as a handling room) A having a handling barrel 10 and a receiving net 11 which rotate around the longitudinal axis of the machine body V, and a leakage process from the handling room A. A sorting unit (hereinafter, referred to as a sorting device) B that sorts and collects grains from an object. Mowed by the mowing device 4, auger 8
And rice, wheat, which is conveyed to the threshing device 3 by the conveyor 9
Crops (grain culms) such as soybeans are supplied to the handling room A and the handling barrel 10
It is threshed by rotating.

[0011] That is, threshing while being transferred to the rear of the machine by the handling teeth spirally provided around the handling cylinder 10,
Grains, fine straw debris and the like leak from the net 11. The remaining processed products are discharged from the rear end of the net 11. As shown in FIG. 3, on the inner surface of the ceiling cover 12 of the handling chamber A, the retention time in the handling chamber of the treated product is adjusted by promoting or suppressing the rearward transfer of the treated product, and thus threshing. A dust delivery valve 13 for optimizing the condition is provided. Further, there is also provided a grain culm sensing switch S1 which outputs an ON signal when the grain culm is supplied to the handling room A and outputs an OFF signal when the grain culm is not supplied.

As shown in FIG. 4, the dust-sending valve 13 has a plurality of plate-shaped members arranged at predetermined intervals in the direction of the axis of rotation of the handling cylinder. Each plate-shaped member is pivotally attached to the ceiling cover 12 so as to be rotatable around a vertical axis, and link mechanisms 13a and 13b provided outside the ceiling cover 12 maintain all plate-shaped members in a parallel state. While rotating, they are configured to rotate simultaneously.

That is, the link 1 which rotates together with each plate member
3a is pivotally connected by a single link 13b, and is configured so that the rotation angle of each plate member (the opening degree of the dust sending valve 13) can be simultaneously changed within a predetermined range by the dust sending valve motor M1. . The dust feed valve motor M1 is driven in the forward and reverse directions by the control means described later. Further, the opening of the dust delivery valve 13 (hereinafter,
A potentiometer-type dust valve opening sensor S2 for detecting the dust valve opening) is provided.

The opening adjustment range of the dust delivery valve 13 is from the position (+ 20 °) shown by the broken line in FIG. 4 to the position (-1) shown by the chain double-dashed line.
It is regulated by 0 °). The position indicated by the broken line is the fully opened state, and in this state, the backward transfer of the processed material is most promoted. On the contrary, in the fully closed state shown by the chain double-dashed line, the backward transfer of the processed material is most suppressed.

As shown in FIG. 5, the sorting apparatus B includes a swing sorting plate 14 and a toumi 15. The processed substances that have leaked from the handling chamber A and accumulated on the rocking sorting plate 14 are gravity-sorted while being transported backward by rocking, and fine straw dust and the like are blown off by the sorting wind from the tomi 15. A Glen pan 16 is provided at the front part of the swing selection plate 14, and chaff sheaves 17 and 18 are provided behind it. Further, below the chaff sheave 17, a Glen sieve 19 is provided. Grains that have leaked through the chaff sheave 17 and the grain sheave 19 are collected from the first port 20 and transported by a bucket conveyor (not shown) to the grain tank 21 (see FIG. 2).
Stored). Further, the mixture of the grains with branch shoots, straw wastes, etc., which leaks through the chaff sheave 18 and is collected from the opening 22 is re-processed by a re-processing mechanism (not shown) and then swing-sorted by the screw conveyor 23. It is returned to the plate 14.

The leakage opening of the chaff sheave 17 (hereinafter referred to as the chaff opening) can be changed and adjusted as follows. As shown in FIG. 6, a plurality of plate-shaped members 17a are provided at predetermined intervals in the front-rear direction of the machine body.
The a is rotatably pivoted about the left and right axis, and the lower end is pivotally connected to the link 25. Therefore, link 2
When 5 is moved in the front-rear direction, each plate-shaped member 17a simultaneously rotates, and the adjacent distance t between each plate-shaped member 17a corresponding to the chaff opening changes.

The chaff opening is adjusted by rotating the chaff motor M2 forward and backward. Forward / reverse rotation of the chaff motor M2 is converted into forward / backward movement of the link 25 by the gear type linkage mechanism 26, the swing arm 27, and the wire 28, and as a result, the chaff opening degree is changed as described above. It should be noted that a potentiometer (hereinafter referred to as a chaff opening sensor) S3 for detecting the chaff opening from the rotation angle of the swing arm 27 S3.
Is provided.

Increasing the chaff opening means selecting device B
Is equivalent to increasing the processing capacity of. In other words, if the chaff opening is increased, the processed material on the swing selection plate 14 quickly leaks and is collected. If the chaff opening is increased, the sorting accuracy generally deteriorates.
Increasing the sorting wind force (hereinafter referred to as "Tomi wind force") that is generated is also performed as necessary.

The toumi wind force is changed by changing the rotation speed of the toumi 15 (hereinafter referred to as the toumi rotation speed). As shown in FIG. 7, the input pulley 15a that rotationally drives the toumi 15 is a split pulley, and the effective diameter of the input pulley 15a is changed by the forward / reverse driving of the toumi motor M3. That is, when the electric motor M3 is driven in the normal direction, the arm 3 is moved through the gear-type linkage mechanism 29, the swing arm 30, and the wire 31.
2 is pulled and the interval between the split pulleys 15a is expanded by a cam mechanism (not shown). As a result, the effective diameter of the portion in contact with the V-belt 23 becomes smaller and the toumi rotation speed becomes higher. That is, the wind power of Toumi becomes stronger. When the TOUMI motor M3 is rotated in the reverse direction, the respective parts move in the opposite direction, and the TOMY rotation speed becomes low. A toumi rotation speed sensor S4 for detecting the rotation speed of the toumi 15 is provided.

As shown in FIG. 1, the control means H uses the relay unit 33 to control the chaff motor M2, the toumi motor M3, and the chaff motor M3 to change and adjust the chaff opening and the Karato wind force. Alternatively, it is performed by controlling the drive of the dust-sending valve motor M1. The control means H is composed of a microcomputer, and outputs O1,
The chaff motor M2 is driven by O2, the toumi motor M3 is driven by the outputs O3, O4, and the dust feed valve motor M1 is driven by the outputs O5, O6 in the forward and reverse directions.

For example, when the output O1 is turned on (L level) and the output O2 is turned off, the chaff motor M2 is driven in the normal direction, and conversely, when the output O1 is turned off and the output O2 is turned on,
The chaff motor M2 is driven in reverse. When both outputs O1 and O2 are off or on, the chaff motor M2 is stopped. Drive of toumi motor M3 by outputs O3, O4,
The same applies to driving the dust-sending valve motor M1 by the outputs O5 and O6.

In the figure, reference numerals 34, 35 and 36 denote changeover switches with a neutral position for manually increasing / decreasing the chaff opening, the toumi rotation speed, or the dust delivery valve opening. However, the change-over switch 35 for changing the increase / decrease in the toumi rotation speed becomes effective when a predetermined condition is satisfied. That is, the changeover switch 35
Is connected to the output O7 of the control means H, and the output O7 is turned on (L level) only under the condition that the threshing device is operating and the engine speed is equal to or higher than a predetermined value.

Further, 37 to 42 are limit switches which are turned off when the chaff opening, the toumi rotation speed, or the dust sending valve opening reaches the limit of the adjustment range. For example, when the chaff opening is fully opened, the limit switch 37 is turned off, and the normal rotation drive of the chaff motor M2 is stopped. In this state, reverse rotation drive, that is, only the closing operation of the chaff sheave is possible. The same applies to the functions of the other limit switches 39 to 42.

As shown in FIG. 1, the control means H includes various sensors in addition to the above-described grain / culm sensing switch S1, dust-feeding valve opening sensor S2, chaff opening sensor S3, and toumi rotation speed sensor S4. , Information such as switches has been entered. The threshing clutch switch S5 is a switch that is turned on when the threshing clutch is in the connected state. This signal is used as one of the starting conditions for the automatic sorting control described later.

The engine speed sensor S6 is an electromagnetic pickup which generates a sine wave having a frequency proportional to the speed of rotation of a wheel gear fixed to the rotary shaft of the engine. It corresponds to load detecting means for detecting a load. Vehicle speed sensor S7
Is provided in the mission section and generates a pulse number signal proportional to the rotation number of the drive wheels of the crawler traveling device 1. The vehicle speed sensor S7 is used as means for detecting the amount of grain culm supplied to the handling room A in the automatic sorting control. This is because the cutting amount per unit time, that is, the grain culm supply amount, changes in proportion to the vehicle speed (running speed). Further, the engine speed sensor (load detection means) S6 also indirectly detects the grain culm supply amount to the handling room A by detecting the threshing load,
Used as a grain culm supply amount detection means.

The layer thickness sensor S8 corresponds to a layer thickness detecting means for detecting the layer thickness of the object to be processed on the swing selection plate 14, and is provided above the chaff sheave 17, as shown in FIGS. There is. The layer thickness sensor S8 includes plate-shaped members T1 and T2 that are swingably suspended around the horizontal axis, and plate-shaped members T1 and T2.
It is composed of a potentiometer PM for converting a backward rotation angle of 2 (the conveyance direction of the processed object) into a resistance value. When the layer thickness of the processed material is small, the plate-shaped member T1 contacts the processed material and rotates backward, and when the layer thickness increases, the plate-shaped member T2 contacts the processed material and rotates rearward. With such a configuration, the larger the layer thickness of the object to be processed, the larger the rotation angle of the sensor bars T1 and T2. Therefore, the layer thickness of the object to be processed can be known from the resistance value (voltage value corresponding thereto) of the potentiometer PM.

The sorting auto switch 43 is an illuminated push button switch for switching whether or not to perform automatic sorting control. If the switch is pressed, the automatic selection control is selected and the illumination lamp is turned on. The crop switch 44 is a rotary changeover switch for switching crops to be cut (rice, wheat, soybean).

The moisture control VR 45 is a moisture setting means for setting the moistness of the crop, and uses a rotary variable resistor. With the center of the variable range as the standard, turn the knob to the left if the crop is dry, and turn it to the right if the crop is damp. The degree of dryness or wetness is also set according to the turning angle. The shedding control VR 46 is a shedding setting means for setting the shedding easiness of the crop, and sets the shedding easiness of the crop in the same manner as the moisture control VR 45.
If it is easy to shred, turn the knob to the left. If it is difficult to shred, turn the knob to the right.

Next, the specific procedure of the sorting control executed by the control means H, that is, the control of the chaff opening, the toumi rotation speed, and the dust delivery valve opening will be described with reference to the flowcharts of FIGS. 9 and 10. First, the starting condition of the automatic sorting control is checked. That is, as shown in the process (a) and thereafter, it is checked whether or not the sorting auto switch 43 is on, the threshing clutch switch S5 is on, and the detection value of the toumi rotation speed sensor S4 is 500 rpm or more. Processing if all conditions are met (b)
After shifting to the automatic sorting control, if any of the conditions is not satisfied, the chaff opening, the toumi rotation speed, and the change output of the dust sending valve opening are all stopped as shown in the processing (c) and after. That is, the chaff motor M2, the toumi motor M3, and the dust feed valve motor M1 are all stopped and terminated.

The automatic selection control after the process (b) is divided into three modes depending on the switching position of the crop switch 44. That is, the rice mode after treatment (d), the wheat mode after treatment (e), and the soybean mode after treatment (f). First, in the rice mode after the process (d), the signal of the grain culm detection switch S1 is checked. When it's on
When grain culm is being supplied to the chaff, the chaff target value (chaff opening target value), the toumi target value (toumi rotation speed target value), and the dust delivery valve target value (Target value of opening of dust sending valve) is set. In later output processing,
The respective motors M2, M3, M1 are driven so that the chaff opening, the toumi rotation speed, and the dust sending valve opening become the respective target values described above.

To explain the setting of the chaff target value, first, the reference target value (T) by the moisture adjustment VR 45 is set based on FIG. 11 (a). As can be seen from the figure, the higher the moistness of the crop, the larger the chaff opening is set (the larger the processing capacity of the sorting device (B) is). This reference target value (T) is, as shown in FIG.
Based on the set value of R46, the chaff opening is increased to such an extent that the crop is less likely to shed. That is, the correction value (D) obtained based on FIG. 11B is added to the reference target value (T).

Next, the correction value (L) due to the load of the engine is obtained based on FIG. 11 (c). The load is obtained from the detection value of the engine speed detection sensor S6, and here, the load is the amount of decrease in the engine speed with respect to the engine speed (reference speed) when the vehicle speed is less than 0.1 m / s. Since this load changes according to the amount of grain culm supplied to the handling room A, the engine speed detection sensor S6 is used as a grain culm supply amount detecting means. further,
A correction value (C) based on the detection value of the layer thickness sensor S8 is obtained based on FIG. 11 (d). After all, the reference target value (T) plus each correction value (T + D + L + C) becomes the chaff target value.

The same applies to setting the toumi target value. The reference target value (T) by the water content adjustment VR 45 is set based on FIG. 12 (a), and the correction value (D) by the shedding adjustment VR 46 obtained based on FIG. 12 (b), FIG.
The correction value (L) based on the load obtained based on 2 (c) and the correction value (C) based on the detection value of the layer thickness sensor S8 obtained based on FIG. 12D are added (T + D + L +
Let C) be the target value for TOMI. In the case of the dust delivery valve target value, first, the reference target value (T) by the shedding adjustment VR 46 is set based on FIG. As can be seen from the figure, the dust valve opening is set to an increasing side so that it is difficult for the crop to shed. As shown in FIG. 13B, this reference target value (T) is corrected to the side where the dust delivery valve opening is increased as the moistness of the crop increases, based on the set value of the moisture adjustment VR 45. That is, the correction value (D) obtained based on FIG. 13B is added to the reference target value (T).
Is added. Further, the value (T + D + L) to which the correction value (L) according to the load obtained based on FIG. 13 (c) is added is set as the dust delivery valve target value. There is no correction based on the detection value of the layer thickness sensor S8.

In the process (d), when the grain culm sensing switch S1 is off (to be precise, when the off state continues for 2 seconds or more), it is turned off after the process (h). Check if 5 seconds have passed. If it has not elapsed, the detection value of the chaff opening detection sensor S3 when the grain culm detection switch S1 is turned off is maintained as the chaff target value, and after 5 seconds, the chaff target value is 1.0 volt (chaff opening). (Corresponding to a fully closed degree)). This is because even if the grain culm is no longer supplied to the handling room A, the chaff opening is maintained as it is for a while and the chaff is closed after 5 seconds.
In addition, the target value of the toumi is 10 from the value detected by the toumi rotation speed sensor S4 when the grain culm sensing switch S1 is turned off.
Set 0 rpm lower rotation speed.

Also in the wheat mode after the process (e), the signal of the grain culm sensing switch S1 is first checked, and when it is off, the process branches to the above process (h). When it is on, the chaff target value, the toumi target value, and the dust delivery valve target value are set as shown in the processing (i) and subsequent steps.

Similar to the rice mode, the reference target value (T) by the water content adjustment VR 45 obtained based on FIG.
Correction value (L) according to vehicle speed obtained based on FIG. 14 (b)
Then, a value (T + L + C) obtained by adding a correction value (C) based on the detection value of the layer thickness sensor S8 obtained based on FIG. 14C is set as the chaff target value. However, it differs from the rice mode in that there is no correction by the shedding adjustment VR 46 and that the correction by the grain culm supply amount is performed based on the vehicle speed instead of the load. Further, the target level of toumi is determined only by the moisture adjustment VR 45 as shown in FIG. 15, and the target value of the dust delivery valve is determined only by the shedding control VR 46 as shown in FIG.

In the soybean mode after the treatment (f),
Regardless of the signal from the grain culm detection switch S1, the chaff target value, the target thyme target value, and the dust delivery valve target value are set in the same manner as the processing (ri) and subsequent steps in the wheat mode. That is, FIG.
7 (a) to the reference target value (T) by the water content adjustment VR 45, the correction value (L) based on the vehicle speed obtained based on FIG. 17 (b) and the layer obtained based on FIG. 17 (c). The value (T + L + C) to which the correction value (C) based on the detection value of the thickness sensor S8 is added is set as the chaff target value. In addition, the target value of toumi by the water content adjusting VR 45 is set based on FIG. 18, and the target value of the dust delivery valve by the shattering adjusting VR 46 is set based on FIG.

Based on the chaff target value, toumi target value, and dust delivery valve target value obtained for each mode as described above, the chaff opening change output (the forward / reverse rotation of the chaff motor M2) is actually processed after the processing (nu). ), Toumi rotation speed change output (toumi motor M3 forward / reverse rotation), and dust delivery valve opening change output (dust delivery motor M1 forward / reverse rotation).

First, after the process (nu), the chaff target value and
The difference (chaff deviation) from the current chaff opening (chaff current value) detected by the chaff opening sensor S3 is obtained, and the chaff motor M2 is operated based on this chaff deviation. When the chaff deviation is −0.12 to +0.12 volts, the chaff motor M1 is not driven as a dead zone (chaf opening change output stop). Chaff deviation +0.12
When the voltage is equal to or higher than the bolt, the "chuff opening output" is executed, and the chaff motor M2 is driven at high speed in the direction of increasing the chaff opening. When the chaff deviation is less than -0.12 volts,
"Chaff closed output" is executed, 120ms on / 188
By the duty driving of 0 ms off, the chaff motor M2 is driven at a low speed in the direction of decreasing the chaff opening degree.

Next, after the processing (L)
The difference (TOUMI deviation) from the present TOUMI rotation speed (TOMI current value) detected by the TOUMI rotation speed sensor S4 is obtained, and the TOUMI motor M3 is controlled based on this difference. As shown in the figure, depending on the value of Toumi deviation, 5
Branch into the street. When the toumi deviation is -15 to +15 rpm, the toumi motor M3 is not driven as a dead zone (toumi rotation speed change output stop). Toumi deviation is + 15r
When it is pm or more, the toumi motor M3 is driven in the direction of increasing the toumi rotation speed, but is driven at a low speed up to +50 rpm, and is driven at a higher speed than that. Toumi deviation is -15r
When it is pm or less, the toumi motor M3 is driven in the direction of decreasing the toumi rotation speed, but it is driven at a low speed up to −50 rpm and is driven at a high speed below that.

Similarly, the difference (dust transfer) between the target value of the dust transfer valve and the current dust transfer valve opening (current value of the dust transfer valve) detected by the dust transfer valve opening sensor S2 after the process (2). The valve deviation) is obtained, and the dust sending valve motor M1 is controlled based on this dust sending valve deviation. When the deviation of the dust sending valve is −0.02 to +0.02 volts, the dust sending valve motor M1 is not driven as the dead zone (dust output opening change output stop). Dust valve deviation is +0.0
When the voltage is 2 volts or more, the "dust valve open output" is executed,
The dust delivery valve motor M1 is driven at high speed in the direction of increasing the opening of the dust delivery valve. When the chaff deviation is −0.02 V or less, the “dust valve closing output” is executed, and the dust valve motor M1 is driven at high speed in the direction of decreasing the opening of the dust valve.

Other examples will be listed below. The structure for changing and adjusting the processing capacity of the sorting apparatus B is not limited to the one for changing the chaff opening of the swing sorting plate as in the above-described embodiment. For example, instead of a chaff sheave, a mesh-shaped or slit-shaped opening is shielded by a shielding plate called a slide Glen pan, and the slide Glen pan is slid to change the shielding area of the opening to change the leak rate of the processed material. It may be a swing selection plate having a structure.
Alternatively, the processing capacity may be changed by making the swing speed of the swing selection plate variable.

The reference target value setting means for setting the reference target value for the automatic sorting control, that is, the moisture setting means and the shedding setting means are not limited to those using the variable resistance as in the above embodiment. For example, a rotary switch may be used to set in multiple steps, or a key (push button) switch (up / down key) may be used to set in multiple steps.

In addition to the vehicle speed sensor S7 and the engine speed sensor (engine load) S6, as the grain culm supply amount detecting means for detecting the amount of grain culm supplied to the handling room, for example, in the case of a self-removing combine, It is also possible to use a culm thickness sensor that detects the thickness of the grain culms that are clamped and conveyed by the chain to the handling room. Further, the specific structure of the layer thickness detecting means (layer thickness sensor) S8 is not limited to that of the embodiment, and various modifications can be made.

The present invention is not limited to combine harvesters and can be widely applied to threshing devices such as harvesters. 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 configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram of a threshing selection control device according to an embodiment of the present invention.

FIG. 2 is a side view of the combine.

FIG. 3 is a top sectional view of the threshing device as seen from the front.

FIG. 4 is a schematic view showing the structure of a dust delivery valve.

FIG. 5: Side perspective view of threshing device

FIG. 6 is a diagram showing a structure for changing and adjusting the chaff opening.

FIG. 7 is a view showing a structure for changing and adjusting the toumi rotation speed.

FIG. 8 is a schematic diagram of a layer thickness sensor.

FIG. 9: Flow chart of sorting control

FIG. 10: Flow chart of sorting control

FIG. 11 is a graph for obtaining a chaff target value in the rice mode.

FIG. 12 is a graph for determining a target value for rice in the rice mode.

FIG. 13 is a graph for obtaining the target value of the dust delivery valve in rice mode

FIG. 14 is a graph for obtaining a chaff target value in the wheat mode.

FIG. 15 is a graph for obtaining a target value of tomi in the wheat mode.

FIG. 16 is a graph for obtaining the target value of the dust sending valve in the wheat mode.

FIG. 17 is a graph for obtaining a chaff target value in soybean mode.

FIG. 18 is a graph for obtaining a target value of tomi in soybean mode.

FIG. 19 is a graph for obtaining the target value of the dust delivery valve in soybean mode.

[Explanation of symbols]

 14 rocking selection plate 45 moisture setting means 46 shedding setting means A handling room B sorting device H control means S3 current value detecting means S6, S7 grain culm supply amount detecting means S8 layer thickness detecting means

Claims (1)

[Claims] 1. A control means (H) is provided for increasing or decreasing the present value of the processing capacity of the sorting device (B) detected by the present value detecting means (S3) so as to approach the target value. The means (H) uses the reference target value set by the reference target value setting means as detection information of the grain culm supply amount detection means (S6, S7) for detecting the grain culm supply amount to the handling room (A). , The target value is obtained by performing correction based on the detection information of the layer thickness detecting means (S8) for detecting the layer thickness of the processed material on the swing sorting plate (14) provided in the sorting device (B). In the threshing selection control device configured as described above, the reference target value setting means sets the moisture setting means (45) for setting the moistness of the crop and the threshing setting means (46) for setting the easiness of shattering of the crop. ) And the control means (H) sets the reference target value to the moisture content. Based on the set value of the setting means (45), the higher the moistness of the crop, the higher the processing capacity of the sorting device (B) is set,
And, based on the set value of the shedding setting means (46),
A threshing sorting control device configured to correct the crop so that it is difficult to shed, so that the throughput of the sorting device (B) increases.