JP2813702B2 - Threshing sorting controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for setting the processing capacity of a sorting device to the target value based on the difference between the current value and the target value of the processing capability of the sorting device detected by a current value detecting means. The present invention relates to a threshing sorting control device provided with a control means for increasing and decreasing the number.

[0002]

2. Description of the Related Art Conventionally, the processing capacity of a threshing and sorting apparatus (hereinafter simply referred to as a sorting apparatus) has been conventionally increased or decreased in accordance with the amount of cereal culm supplied to a handling room. For example, in the case of a combine, since the culm supply amount (that is, the amount of cutting) is proportional to the traveling speed, a vehicle speed sensor is used as a cereal culm supply amount detection unit, and the processing capacity is adjusted based on the detection information. In the case where the sorting device is composed of the swing sorting plate and the burrs, the processing capability of the sorting device is increased by increasing the leakage opening of the swing sorting plate and the wind power of the burrs. In some cases, the processing capability of the sorting device is adjusted based on information detected by a layer thickness sensor that detects the layer thickness of the processed material on the swinging sorting plate so that the layer thickness falls within an appropriate range.

[0003]

Since the control for adjusting the processing capacity of the sorting apparatus in accordance with the supply amount of cereal stalk is an open loop control, rough automatic adjustment is possible but lacks accuracy. For example, the amount of processed material in the sorting device varies depending on the grain setting state of the crop, even if the supply amount of cereal stalk is the same. Therefore, it is necessary to correct the processing capacity accordingly.

The control for adjusting the processing capacity of the sorting apparatus according to the thickness of the processed material on the swing sorting plate is a closed-loop control. In a steady state, the thickness of the processed material on the swing sorting plate is substantially reduced. It can be kept constant but is vulnerable to disturbance. For example,
If the feed rate of the grain stalk increases suddenly for some reason, the layer thickness of the processed material on the oscillating sorter plate temporarily increases suddenly due to control delay.

As described above, there are advantages and disadvantages in the treatment capacity adjustment according to the grain culm supply amount and the treatment capacity adjustment in accordance with the layer thickness of the processed material on the swing sorting plate. desirable. Furthermore, the ease with which the grains in the oscillating sorter leaks varies depending on the conditions such as the type of crop and humidity, and it is necessary to switch the processing capacity accordingly.

[0006] The present invention has been made in view of such circumstances, and its object is to rationally integrate the above-described various treatment capacity adjustments and to cope with conditions such as crop types and wetness. An object of the present invention is to provide a threshing / sorting control device which is easily and automatically adjusted appropriately.

[0007]

SUMMARY OF THE INVENTION A threshing / sorting control apparatus according to the present invention provides a processing capability of a sorting apparatus based on a difference between a current value and a target value of the processing capacity of the sorting apparatus detected by a current value detecting means. Control means for increasing / decreasing so that the target value is set to the target value, wherein a first characteristic configuration is a reference target value setting means for manually setting a reference target value;
Cereal stalk supply amount detecting means for detecting the cereal stalk supply amount to the handling room,
Layer thickness detecting means for detecting the layer thickness of the processed material on the oscillating sorting plate provided in the sorting apparatus is provided, and the control means sets a reference target value set by the reference target value setting means. , The first obtained from the detection information of the cereal stem supply amount detecting means.
The second value obtained from the correction value and the detection information of the layer thickness detecting means.
The point is that the target value is obtained by performing correction based on the correction value.

The second characteristic configuration specifies a preferred specific configuration when the first characteristic configuration is implemented. The second characteristic configuration corresponds to the predicted maximum grain culm supply amount by the reference target value setting means. The control means is configured to set, as the first correction value, a value for correcting the reference target value to a decreasing side of the processing capacity as the grain culm supply amount is smaller. Further, as the second correction value, as the layer thickness is larger than the reference thickness, the reference target value is corrected to increase the processing capacity,
In addition, the configuration is such that a value for correcting the reference target value toward the decreasing side of the processing capacity is determined as the layer thickness is smaller than the reference thickness.

In a third characteristic configuration, in the first or second characteristic configuration, the reference target value setting means switches standard setting value switching means for switching a predetermined standard setting value according to a crop; And a correction amount setting means for setting the correction amount of the standard setting value.

[0010]

According to the first characteristic configuration, the operator sets only the reference target value according to the type of crop or the like by the reference target value setting means. Then, the control means corrects the set reference target value based on the detection information of the cereal culm supply amount detection means and the detection information of the layer thickness detection means as a target value, which is detected by the current value detection means. The processing capacity of the sorting device is controlled such that the current value of the processing capacity of the sorting device becomes the target value.

According to the second characteristic configuration for specifically specifying the correction, the reference target value set by the reference target value setting means is the maximum grain culm supply amount predicted according to the type of crop or the like. The first correction value corresponds to a value that corrects the reference target value to the decreasing side of the processing capacity as the grain culm supply amount is smaller, and the second correction value is that the layer thickness of the processed material is smaller than the reference thickness. The reference target value is corrected to the increasing side of the processing capacity as the thickness is thicker, and the reference target value is corrected to the decreasing side of the processing capacity as the layer thickness is smaller than the reference thickness.

[0012] According to the third characteristic configuration, in setting the reference target value, the operator switches the predetermined standard setting value according to the crop by the standard setting value switching means, and switches the standard setting value to the correction amount setting means. The correction amount of the standard set value is set according to the wetness of the crop.

[0013]

As described above, according to the present invention, the supply amount of cereal stems and the thickness of the processed material can be ensured while ensuring versatility by setting reference target values according to conditions such as the type of crop and wetness. The present invention has provided a threshing / sorting control device in which automatic adjustment according to the temperature is appropriately performed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 2 shows a side view of the entire combine. A cockpit 2, a threshing device 3, and the like are mounted on a body V provided with a pair of right and left crawler traveling devices 1, and a mowing device 4 is provided in front of the body V so as to be able to move up and down. The reaper 4 includes a weeding tool 5, a raking device 6, a cutting blade 7, an auger 8 for gathering the harvested crop to the center in the lateral direction of the machine, and a conveyor 9 for transporting the gathered crop to the threshing device 3. ing.

The threshing apparatus 3 includes a threshing unit (hereinafter referred to as a handling room) A including a handling drum 10 and a receiving net 11 that rotates around the longitudinal axis of the machine body V, and a process of leaking from the handling room A. A sorting unit (hereinafter, referred to as a sorting device) B for sorting and collecting kernels from products. The reaper is cut by the reaper 4 and the auger 8
Rice and wheat conveyed to the threshing device 3 by the conveyor 9 and
Crops (grain stalks) such as soybeans are supplied to the handling room A and
Threshing by rotation of.

That is, threshing is performed while being transferred to the rear of the machine body by toothing spirally provided around the handling cylinder 10,
Grains, fine straw chips, etc., leak from the receiving net 11, and the remaining processed material is discharged from the rear end of the receiving net 11. As shown in FIG. 3, on the inner surface of the ceiling cover 12 of the handling room A, the residence time of the treated material in the handling room is adjusted by promoting or suppressing the backward transfer of the treated material, thereby threshing. A dust valve 13 for optimizing the condition is provided. Further, a cereal culm sensing switch S1 that outputs an ON signal when the cereal culm is supplied to the handling room A and an OFF signal when the cereal culm is not supplied is provided.

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

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

The opening adjustment range of the dust valve 13 extends from a position (+ 20 °) indicated by a broken line to a position (−1) indicated by a two-dot chain line in FIG.
0 °). The position shown by the broken line is the fully open state, and in this state, the rearward transfer of the processing object is most promoted. Conversely, in the fully closed state shown by the two-dot chain line, the transfer of the processed material backward is most suppressed.

As shown in FIG. 5, the sorting device B includes an oscillating sorting plate 14 and a torsion 15. The processed material leaked from the handling room A and deposited on the swing sorting plate 14 is sorted by gravity while being transported backward by the swing, and fine straw chips and the like are blown off by the sorting wind from the torch 15. A Glen pan 16 is provided at the front of the swing sorting plate 14, and chaff sheaves 17, 18 are provided behind it. Further, a grain sheave 19 is provided below the chaff sheave 17. The kernels leaking from the chaff sheave 17 and the Glen sheave 19 are collected from the first mouth 20 and conveyed by a bucket conveyor (not shown) to a Glen tank 21 (FIG. 2).
See). Further, the mixture of the spiked kernels and straw chips collected from the second mouth 22 by leaking the chaff sheave 18 is re-processed by a re-processing mechanism (not shown), and is then oscillated by a screw conveyor 23. It is reduced to the plate 14.

The leak opening of the chaff sheave 17 (hereinafter referred to as "chaff opening") can be changed and adjusted as follows. As shown in FIG. 6, a plurality of plate members 17a are provided at predetermined intervals in the longitudinal direction of the fuselage.
a is pivotally connected to the left and right axes so as to be rotatable, and the lower end is pivotally connected to the link 25. Therefore, link 2
When the member 5 is moved in the front-rear direction, the plate members 17a are simultaneously rotated, and the adjacent distance t between the plate members 17a corresponding to the opening degree of the chaff changes.

Adjustment of the chaff opening is performed by rotating the chaff motor M2 forward and backward. The forward / reverse rotation of the chaff motor M2 is converted into a forward / backward movement of the link 25 by a gear-type linkage mechanism 26, a swing arm 27, and a wire 28, and as a result, the chaff opening is changed as described above. Note 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.
Is provided.

Increasing the chaff opening is achieved by using the sorting device B.
This is equivalent to increasing the processing capacity of. That is, if the opening degree of the chaff is increased, the processed material on the swing sorting plate 14 is quickly leaked and collected. If the opening of the chaff is increased, the sorting accuracy generally deteriorates.
If necessary, increasing the wind force of the sorting wind (hereinafter referred to as toumi wind force) in which the wind occurs is also performed.

The wind power of the turtle is changed by changing the rotation speed of the turtle 15 (hereinafter referred to as the turtle rotation speed). As shown in FIG. 7, an input pulley 15a that rotationally drives the torsion 15 is constituted by a split pulley, and its effective diameter is changed by forward and reverse rotation of the torsion motor M3. That is, when the electric motor M3 is driven to rotate forward, the arm 3 is connected via the gear-type linkage mechanism 29, the swing arm 30, and the wire 31.
2, the interval between the split pulleys 15a is widened by a cam mechanism (not shown). As a result, the effective diameter of the portion where the V-belt 23 comes into contact is reduced, and the rotation speed of the tongue is increased. That is, the wind power of the turtle becomes strong. When the torsion motor M3 is rotated in the reverse direction, each part moves in the opposite direction to the above, and the torsion rotation speed decreases. It should be noted that a tongue rotation speed sensor S4 for detecting the number of rotations of the tongue 15 is provided.

As shown in FIG. 1, the control means H controls the change of the chaff opening and the Karin wind force and the above-mentioned change of the dust valve opening through the relay unit 33 to control the chaff motor M2, the toy motor M3, and the like. Alternatively, it is performed by controlling the driving of the dust valve motor M1. The control means H is configured using a microcomputer, and its output O1,
O2 drives the chuff motor M2, outputs O3 and O4 to drive the torsion motor M3, and outputs O5 and O6 to drive the dust feed valve motor M1 to rotate forward and backward, respectively.

For example, if the output O1 is turned on (L level) and the output O2 is turned off, the chaff motor M2 is driven to rotate normally. Conversely, if the output O1 is turned off and the output O2 is turned on,
The chaff motor M2 is driven to rotate in the reverse direction. When both the outputs O1 and O2 are off or on, the chaff motor M2 is stopped. Driving of the torsion motor M3 by the outputs O3 and O4,
The same applies to the driving of the dust valve motor M1 by the outputs O5 and O6.

In the drawing, reference numerals 34, 35, and 36 denote changeover switches with a neutral position for manually increasing or decreasing the chaff opening, the towing rotation speed, or the dust valve opening. However, the changeover switch 35 for increasing / decreasing the towing speed is 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 when the threshing device is operating and the engine speed is equal to or higher than a predetermined value.

Reference numerals 37 to 42 denote limit switches which are turned off when the opening of the chaff, the number of revolutions of the tongue, or the opening of the dust valve reaches the limit of the adjustment range. For example, when the chuff opening degree is fully opened, the limit switch 37 is turned off, and the normal rotation drive of the chuff motor M2 is stopped. In this state, only the reverse rotation drive, that is, only the closing operation of the chaff sheave can be performed. 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 other than the aforementioned grain stalk sensing switch S1, dust valve opening sensor S2, chaff opening sensor S3, and tongue rotation speed sensor S4. , Switches and the like are input. 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 of the automatic sorting control described later.

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

The layer thickness sensor S8 corresponds to a layer thickness detecting means for detecting the layer thickness of the processed material on the swing sorting plate 14, and is provided above the chaff sheave 17 as shown in FIGS. I have. The layer thickness sensor S8 includes plate-like members T1 and T2 that swing freely around a horizontal axis, and the plate-like members T1 and T2.
2 comprises a potentiometer PM for converting a turning angle backward (transfer direction of the processed object) into a resistance value. When the layer thickness of the processing object is small, the plate-shaped member T1 contacts the processing object and rotates rearward, and when the layer thickness increases, the plate-shaped member T2 contacts the processing object and rotates rearward. With such a configuration, since the rotation angle of the sensor bars T1 and T2 increases as the layer thickness of the object increases, the layer thickness of the object can be determined from the resistance value (corresponding voltage value) of the potentiometer PM.

The sorting auto switch 43 is an illuminated push button switch for switching whether or not to execute the sorting automatic control. If the switch is pressed, the automatic sorting control is selected, and the illumination lamp is turned on. The crop switch 44 is a rotary changeover switch for switching a crop to be harvested (rice, wheat, soybean). Also, the chaff adjustment VR45,
The tow adjustment VR46 and the dust valve adjustment VR47 are variable resistors for finely adjusting the automatic control of the chaff opening and the number of rotations of the toy according to conditions such as the degree of wetting of the crop. As described below, the crop switch 44 and the chaff adjustment VR 45
Reference target value setting means for setting a reference target value for automatic sorting control is provided. The crop switch 44 corresponds to standard setting value switching means, and the chaff adjustment VR 45 corresponds to correction amount setting means.

Next, a specific procedure of the sorting control executed by the control means H, that is, the control of the opening degree of the chaff, the rotation speed of the tongue and the opening degree of the dust valve will be described with reference to the flow charts of FIGS. First, the starting conditions of the automatic sorting control are checked. That is, as shown in the processing (a) and thereafter, it is checked whether or not the selection auto switch 43 is on, the threshing clutch switch S5 is on, and the detection value of the torsion speed sensor S4 is 500 rpm or more. Processing if all conditions are met (b)
The process proceeds to the subsequent automatic selection control, but if any of the conditions is not satisfied, the change output of the chaff opening, the toy rotation speed, and the dust valve opening are all stopped as shown in the processing (c) and thereafter, That is, the chaff motor M2, the toy motor M3, and the dust valve motor M1 are all stopped, and the process ends.

The automatic sorting control after the process (b) is divided into three modes depending on the switching position of the crop switch 44. That is, a rice mode after the processing (d), a wheat mode after the processing (e), and a soybean mode after the processing (f). First, in the rice mode after the process (d), the signal of the grain culm sensing switch S1 is checked. When on, that is, handling room A
When the culm is supplied to the target, the target value of the chaff (target value of the opening degree of the chaff), the target value of the toumi (target value of the rotation speed of the toumi), and the target value of the dust valve as shown in the processing (g) and thereafter. (Target value of dust valve opening) is set. In later output processing,
The motors M2, M3, and M1 are driven such that the opening degree of the chaff, the number of rotations of the tongue, and the opening degree of the dust valve become the above-described respective target values.

The setting of the chaff target value will be described first. First, the chaff adjustment VR45 will be described with reference to FIG.
Is set as the reference target value (T). This reference target value (T) is set by switching the crop switch 44 and is a standard set value (2.5
V) plus a correction value (± 1 V) by the chaff adjustment VR45. Next, a first correction value (L) based on the load of the engine is obtained based on FIG. The load is obtained from the detection value of the engine speed detection sensor S6, and here, the load is defined as a 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 supply amount of the grain stalk to the handling room A, the engine speed detection sensor S6 is used as the grain stalk supply amount detecting means.
Next, a second correction value (C) based on the detection value of the layer thickness sensor S8 is obtained based on FIG. Then, a value obtained by adding the first correction value and the second correction value to the reference target value (T + L +
Let C) be the chaff target value.

The same applies to the setting of the toy target value. A reference target value (T) by the torsion adjustment VR 46 is set based on FIG. 12A, and a first correction value (L) based on the load obtained based on FIG.
The value (T + L + C) obtained by adding the second correction value (C) based on the detection value of the layer thickness sensor S8 obtained based on (c) is set as the toy target value. In the case of the dust valve target value, a reference target value (T) by the dust valve adjustment VR 47 is set based on FIG. 13A, and a correction value based on the load obtained based on FIG. L) (T + L) is set as the dust valve target value.

In the process (d), when the grain culm sensing switch S1 is off (more precisely, when the off state continues for 2 seconds or more), as shown in the process (h) and thereafter, the switch is turned off. Check if 5 seconds have elapsed. If the elapsed time has not elapsed, the detection value of the chaff opening detection sensor S3 when the grain culm sensing switch S1 is turned off is maintained as the chaff target value, and after 5 seconds, the chaff target value is set to 1.0 volt (chaff opening). (Corresponding to full closing of the degree). This is for keeping the chaff opening as it is for a while and closing it after 5 seconds even if the grain stalk is no longer supplied to the handling room A.
In addition, the target value of the turtle is 10 times smaller than the detection value of the turtle rotation speed sensor S4 when the grain culm sensing switch S1 is turned off.
Set the rotation speed lower by 0 rpm.

In the wheat mode after the process (e), first, the signal of the grain culm sensing switch S1 is checked, and if 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 valve target value are set as shown in the processing (i) and thereafter.

Similarly to the rice mode, the reference target value (T) based on the chaff adjustment VR45 obtained based on FIG.
The first correction value (L) based on the vehicle speed calculated based on FIG. 14B and the layer thickness sensor S calculated based on FIG.
8 plus the second correction value (C) based on the detected value (T +
L + C) is the chaff target value. However, the difference from the rice mode is that the first correction value is changed according to the vehicle speed instead of the load.
That is, in the wheat mode (and the soybean mode), the vehicle speed sensor S7 corresponds to a grain culm supply amount detecting unit. Further, the target value of the dust valve and the target value of the dust valve are determined by only the dust adjusting VR 46 or the dust valve adjusting VR 47 based on FIG. 15 or FIG. 16, and there is no correction.

In the soybean mode after the process (f),
Regardless of the signal of the grain culm sensing switch S1, the chaff target value, the tomato target value, and the dust valve target value are set in the same manner as in the processing in the wheat mode (i) and thereafter. That is, FIG.
The reference target value (T) by the chaff adjustment VR45 obtained based on (a) is obtained based on the first correction value (L) based on the vehicle speed obtained based on FIG. 17B and FIG. 17C. A value obtained by adding the second correction value (C) based on the detection value of the layer thickness sensor S8 (T + L + C) is set as the chaff target value. Also, FIG.
8, a target value of the dust control by the dust control VR 46 is determined, and a target value of the dust valve by the dust valve adjustment VR 47 is determined based on FIG. 19.

Based on the chaff target value, the toy target value, and the dust valve target value obtained for each mode as described above, the actual chaff opening change output (forward / reverse rotation of the chaff motor M2) after the processing (N). ), The output of changing the rotation speed of the tongs (forward / reverse rotation of the towing motor M3), and the output of changing the opening of the dust valve (forward / reverse rotation of the motor M1).

First, after the processing (N), 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 chuff 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 (chaff opening change output stop). Chuff deviation is +0.12
When the voltage is equal to or more than the volt, the "chuff opening output" is executed, and the chaff motor M2 is driven at a high speed in a direction to increase the chaff opening. When the chaff deviation is less than -0.12 volts,
“Chaff closed output” is executed, and 120 ms on / 188
Due to the 0 ms off duty drive, the chuff motor M2 is driven at a low speed in a direction to decrease the chaff opening.

Next, after the processing (l), the target value of the turtle is
The difference (Toumi deviation) from the current Toumi rotation speed (Toumi current value) detected by the Toumi rotation speed sensor S4 is obtained, and the Toumi motor M3 is controlled based on this Toumi deviation. As shown in the figure, 5
Branch on the street. When the towing deviation is -15 to +15 rpm, the towing motor M3 is not driven as a dead zone (tooth rotation speed change output stop). Toumi deviation is + 15r
When the rotation speed is equal to or more than pm, the torsion motor M3 is driven in a direction to increase the rotation speed of the torsion, but is driven at a low speed up to +50 rpm and at a high speed thereafter. Toumi deviation is -15r
When the rotation speed is less than or equal to pm, the torsion motor M3 is driven in a direction to decrease the rotation speed of the torsion, but is driven at a low speed up to -50 rpm and at a high speed below -50 rpm.

Similarly, the difference between the target value of the dust valve and the current opening of the dust valve (current value of the dust valve) detected by the dust valve opening sensor S2 after the process (ヲ) (dust feeding). Valve deviation) is obtained, and the dust valve motor M1 is controlled based on the dust valve deviation. When the dust valve deviation is −0.02 to +0.02 volts, the dust valve motor M1 is not driven as a dead zone (the dust valve 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 valve motor M1 is driven at a high speed in a direction to increase the dust valve opening. When the chaff deviation is equal to or less than -0.02 volts, the "dust valve closing output" is executed, and the dust valve motor M1 is driven at a high speed in the direction of decreasing the dust valve opening.

As described above, when determining the chaff target value for increasing or decreasing the processing capacity of the sorting device B, first, in accordance with the crop selected by the crop switch 44 as the standard set value switching means. The predetermined standard setting value,
The value corrected by the chaff adjustment VR45 as the correction amount setting means is set as a reference target value (T) (FIG. 11).
(A), FIG. 14 (a), FIG. 17 (a)). And
The reference target value (T) is obtained from the first correction value (L) obtained from the detection information of the engine speed sensor S6 or the vehicle speed sensor S7 as the grain culm supply amount detection means and the detection information of the layer thickness sensor S8. The value obtained by adding the second correction value (C) is set as the chaff target value.

Further, the first correction value is calculated as shown in FIG.
As shown in FIG. 14 (b) or FIG. 17 (b), as the grain culm supply amount is smaller, the reference target value is a value for correcting the chaff opening degree toward the closing side (decreasing processing capacity). The target value is a value corresponding to the predicted maximum grain culm supply.

The second correction value is shown in FIG.
As shown in FIG. 17 (c) or FIG. 17 (c), the reference target value increases as the layer thickness of the processed material on the swinging separation plate 14 becomes larger than the reference thickness. ), And the reference target value is corrected to be closer to the closing side of the chaff opening (to the side where the processing capacity decreases) as the thickness is smaller than the reference thickness. However, the detection value (voltage) of the layer thickness sensor increases as the layer thickness increases. The reference thickness in FIGS. 11C and 14C corresponds to a detection value of 2.0 V of the layer thickness sensor.
The reference thickness in FIG. 17C corresponds to a detected value of 1.5V.

Hereinafter, other embodiments will be described. The structure for changing and adjusting the processing capacity of the sorting device B is not limited to the structure in which the chaff opening of the swinging sorting plate is changed as in the above embodiment. For example, in place of the chaff sheave, the mesh or slit-shaped opening is shielded by a shield plate called a slide Glen pan, and the slide Glen pan is slid to change the shielding area of the opening, thereby changing the leak rate of the processed material. A swinging sorting plate having a structure may be used.
Further, the processing capability 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 is, as in the above embodiment, a crop switch (standard setting value switching means) 44 which is a rotary changeover switch and a variable. The configuration is not limited to the one including the chaff adjustment VR (correction amount setting means) 45 which is a resistance. For example, if conditions such as the type of crop and the degree of wetness are set by a key (push button) switch, the control unit automatically sets a reference target value corresponding to those conditions based on a table stored in advance. You may do so.

As the cereal stalk supply amount detecting means for detecting the cereal stalk supply amount to the handling room, in addition to the vehicle speed sensor S7 and the engine speed sensor (engine load) S6, for example, in the case of a self-removable combine-in, It is also possible to use a culm thickness sensor that detects the thickness of the cereal culm 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, but can be variously changed.

The present invention can be widely applied not only to combine harvesters but also to threshing devices such as harvesters. In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

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

FIG. 2 is a side view of the combine.

FIG. 3 is an upper sectional view of the threshing device as viewed from the front.

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

FIG. 5 is a side perspective view of the threshing apparatus.

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

FIG. 7 is a diagram showing a structure for changing and adjusting the number of rotations of the tongs;

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

FIG. 9 is a flowchart of sorting control.

FIG. 10 is a flowchart of sorting control.

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

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

FIG. 13 is a graph for obtaining a dust valve target value in the 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 toumi in wheat mode.

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

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

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

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

[Explanation of symbols]

 A Handling room B Sorting device H Control means 14 Oscillating sorting plate 44, 45 Reference target value setting means S3 Current value detecting means S6, S7 Grain culm supply amount detecting means S8 Layer thickness detecting means

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01F 12/00-12/60

Claims (3)

(57) [Claims] 1. The processing capacity of the sorting device (B) is determined based on a difference between a current value and a target value of the processing capability of the sorting device (B) detected by a current value detecting means (S3). A threshing / sorting control device provided with a control means (H) for increasing and decreasing the reference target value, the reference target value setting means (44, 45) for manually setting a reference target value, and a handling room (A) Means for detecting the supply amount of cereal stalk to the culm (S6, S7); and a layer for detecting the thickness of the processed material on the oscillating sorting plate (14) provided in the sorting device (B). A thickness detection unit (S8); and the control unit (H) includes a reference target value setting unit (4).
The reference target value set in (4, 45) is obtained from the first correction value obtained from the detection information of the grain culm supply amount detection means (S6, S7) and the detection information of the layer thickness detection means (S8). A threshing / sorting control device configured to determine the target value by correcting based on the determined second correction value. 2. The reference target value setting means (44, 45).
The control means (H) is configured to set a reference target value corresponding to the predicted maximum cereal culm supply amount, and the first correction value is such that the smaller the cereal culm supply amount is,
Configured to calculate a value for correcting the reference target value to a decreasing side of the processing capacity, and further processing the reference target value as the second correction value as the layer thickness is larger than the reference thickness. Compensate for increased capacity,
2. The threshing / sorting control device according to claim 1, wherein the threshing / sorting control device according to claim 1, wherein, as the layer thickness is smaller than the reference thickness, a value for correcting the reference target value to the side where the processing capacity decreases is determined. 3. 3. The reference target value setting means (44, 45).
Comprises a standard setting value switching means (44) for switching a predetermined standard setting value according to a crop, and a correction amount setting means (45) for setting a correction amount of the standard setting value. The threshing and sorting control device according to claim 1 or 2.