JP2726358B2 - Threshing sorting controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cereal stalk supply amount detecting means for detecting a cereal stalk supply amount to a handling room, and an actuator for changing and adjusting a leakage opening of a processed material in a swinging sorting plate of a sorting device. And control means for controlling the operation of the actuator. The control means, based on the detection information of the cereal culm supply amount detection means, increases the leak opening degree as the cereal culm supply amount increases. Thus, the present invention relates to a threshing sorting control device configured to control the operation of the actuator.

[0002]

2. Description of the Related Art For example, in a threshing / sorting apparatus for combine harvesters, a vehicle speed sensor is used as a means for detecting the supply amount of cereal stalks, and based on the detection information, the degree of opening of the processed material in a rocking / sorting plate (for example, the The control for adjusting the degree is conventionally performed. In other words, increasing the vehicle speed and increasing the supply of grain culm increases the leakage opening, and decreasing the vehicle speed and decreasing the grain culm supply reduces the leakage opening, thereby maintaining a constant sorting accuracy. It is doing. Conventionally, the rate of increase / decrease of the leak opening, that is, the operating speed of the leak opening changing means has been constant.

[0003]

However, if the operating speed of the leak opening changing means is too slow, the leak opening increases with the increase in the amount of treated material when the supply of grain stalk increases suddenly. And the clogging of the swing sorting plate with the processed material occurs. On the other hand, if the operating speed of the leak opening change means is too fast, when the supply of cereal stalks decreases, the leak opening may be reduced despite the gradual decrease in the amount of treated material due to the effect of the second reductant. Is too fast, and as a result, a phenomenon in which the processing object to be recovered is discharged outside the machine, that is, a so-called third loss occurs. It has not been easy to determine an appropriate operation speed that satisfies such conflicting conditions.

The present invention has been made in view of the above circumstances, and an object of the present invention is to appropriately prevent both the occurrence of the clogged state of the processed material and the occurrence of the third loss as described above. It is in.

[0005]

A threshing / sorting control device according to the present invention comprises: a cereal culm supply amount detecting means for detecting a cereal culm supply amount to a handling room; An actuator for changing and adjusting the opening degree, and control means for controlling the operation of the actuator are provided, and the control means, based on the detection information of the cereal culm supply amount detection means, the larger the cereal culm supply amount, To increase the leak opening,
The actuator is configured to control the operation of the actuator, and the characteristic configuration thereof is such that the control unit operates slowly when decreasing the leakage opening degree than when increasing the leakage opening degree. The point is that it is configured to control the operation of the actuator so as to achieve the speed.

[0006]

According to the above feature configuration, the control means increases the leak opening when it is determined that the cereal culm supply amount detected by the cereal culm supply amount detection means is increasing. When the actuator is operated, and conversely, when it is determined that the cereal stalk supply amount detected by the cereal stalk supply amount detection means is decreasing, the actuator is operated to reduce the leakage opening degree. At this time, the actuator is operated at an operation speed lower than the operation speed at the time of increasing the leak opening. In other words, by setting the operating speed of the actuator when increasing the leakage opening to a high speed, for example, even in a case where the grain culm supply amount suddenly increases,
It is possible to prevent clogging of the processed material. In addition, even if the supply amount of cereal stalk decreases or the amount of treated material gradually decreases due to the effect of the second reductant, the leakage opening is reduced by operating the actuator at a slow operation speed. But never too fast.

[0007]

Therefore, the rate of increase or decrease of the leakage opening, which is adjusted based on the increase or decrease of the supply amount of cereal stalks, is equal to the rate of increase or decrease of the actual amount of the processed material on the swing sorting plate due to the influence of the second reductant. Since the process is performed in a close state, both the occurrence of the clogged state of the processed material and the occurrence of the third loss can be accurately avoided.

[0008]

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 scraping 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 2. ing.

As shown in FIG. 3, the threshing apparatus 3
Cylinder 10 and receiving net 11 rotating around the longitudinal axis of the cylinder
Threshing unit (hereinafter referred to as “handle room”) A with handle and A
(Hereinafter, referred to as a sorting device) B for sorting and recovering kernels from the treated material leaked from the plant. The reaper is cut by the reaper 4 and the threshing device 3 is moved by the auger 8 and the conveyor 9.
(Grain stalks) such as rice, wheat, and soybeans transported to
And is threshed by the rotation of the handling drum 10.

That is, threshing is performed while being transported rearward of the fuselage 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. On the inner surface of the ceiling cover 12, a dust valve 13 for promoting or suppressing the backward transfer of the processed material to adjust the residence time of the processed material in the handling room and thereby optimizing the threshing 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.

The sorting device B comprises a swinging sorting plate 14 and a torsion 15
Is provided. 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 a chaff sheave 17,
18 are provided. Further, a grain sheave 19 is provided below the chaff sheave 17. The grain leaking the chaff sieve 17 and the grain sieve 19 is the first mouth 20
And is transported by a bucket conveyor (not shown) and stored in the Glen tank 21. 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 opening degree of the chaff sheave 17 (hereinafter referred to as the chaff opening degree), that is, the leakage opening degree of the processed material on the swinging selection plate 14 can be changed and adjusted by a structure as shown in FIG. . First, the chaff sheave 17 has a plurality of plate members 17a arranged in the front-rear direction at predetermined intervals. Each plate-like member 17 a is rotatably pivoted around the left-right axis, and its lower end is connected by a link 25.
Therefore, when the link 25 is moved in the front-rear direction, the respective plate-like members 17a simultaneously rotate, and the adjacent distance t between the respective plate-like members 17a corresponding to the opening degree of the chaff changes.

The opening of the chaff is adjusted by rotating the sheave motor M1 as an actuator in the forward and reverse directions. The forward / reverse rotation is converted into the 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 is changed as described above. In addition, a potentiometer (hereinafter, referred to as a chaff opening sensor) S2 for detecting a chaff opening from the rotation angle of the swing arm 27 is provided.

The wind power of the sorting wind (hereinafter referred to as "toumi wind power") generated by the toumi 15 can be changed by changing the rotation speed of the toumi 15 (hereinafter referred to as "toumi rotation speed"). That is, as shown in FIG.
An input pulley 15a for rotating the torsion 15 is constituted by a split pulley, and its effective diameter is changed by the forward / reverse rotation of the electric motor M2. For example, when the electric motor M2 is driven to rotate forward, the arm 32 is pulled through the gear-type linkage mechanism 29, the swing arm 30, and the wire 31, and 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 electric motor M2 is rotated in the reverse direction, the respective parts move in the opposite direction to the above, and the rotation speed of the torsion becomes low. The swing arm 3
A potentiometer (hereinafter referred to as a toumi sensor) S3 for detecting the toumi rotation speed from the 0 rotation angle is provided.

As shown in FIG. 1, the control means H controls the driving of the sheave motor M 1 and the torsion motor M 2 via a relay unit 33, as shown in FIG. The control means H is configured using a microcomputer, and its output O1,
O2 drives the sheave motor M1 forward and reverse, and the output O
3, O4 drives the torsion motor M2 forward and reverse.

For example, if the output O1 is turned on (L level) and the output O2 is turned off, the sheave motor M1 is driven to rotate forward. Conversely, if the output O1 is turned off and the output O2 is turned on,
The sheave motor M1 is driven to rotate in the reverse direction. When the outputs O1 and O2 are both off or on, the sheave motor M1 is stopped. The same applies to the driving of the torsion motor M2 by the outputs O3 and O4. The chief opening degree or the towing rotation number, which is changed and adjusted by the forward / reverse rotation of the sheave motor M1 or the toy motor M2, is fed back to the control means H by the above-mentioned chief opening sensor S2 or toy sensor S3.

In the drawing, reference numerals 34 and 35 denote changeover switches with a neutral position for manually increasing or decreasing the chaff opening or the number of rotations of the toy wheel. Although not shown in FIGS. 4 and 5, reference numerals 36 to 39 denote limit switches that are turned off when the chaff opening or the towing rotation speed reaches the limit of the adjustment range. For example, when the chaff opening is fully opened, the limit switch 36 is turned off, and the forward drive of the sheave motor M1 is stopped. In this state, only the reverse rotation drive, that is, only the closing operation of the chaff sheave can be performed. Other limit switches 37-3
The same applies to the function of No. 9.

As shown in FIG. 1, information on various sensors and switches is input to the control means H in addition to the above-described cereal culm sensing switch S1, the chaff opening degree sensor S2, and the toy sensor S3. The threshing clutch switch S4 is a switch that is turned on when the threshing clutch is in the connected state. The control means H knows that the combine is threshing based on the signal of the threshing clutch switch S4.

The vehicle speed sensor S5 is provided in the transmission section of the crawler traveling device 1 and generates a signal of a pulse number proportional to the number of rotations of the drive wheels of the crawler traveling device 1 to control the control means H.
Give to. This vehicle speed sensor S5 is used as a grain culm supply amount detecting means for detecting the grain culm supply amount to the handling room A. This is because the cut amount of the grain stalk, that is, the grain stalk supply amount changes in proportion to the vehicle speed. The sorting auto switch 40 is a switch for switching whether or not to execute the automatic control of the chaff opening and the turtle rotation speed described below, and the crop switch 41 is a switch for switching according to the crop to be harvested and threshed (rice, wheat, soybean). is there. In addition, the chaff adjustment VR42 and the toumi adjustment VR43 are:
This is a variable resistor for finely adjusting the automatic control of the opening degree of the chaff and the number of rotations of the turtle according to conditions such as the degree of wetting of the crop.

Next, the automatic control of the chaff opening degree and the rotation speed of the tongue executed by the control means H (hereinafter referred to as sorting control) will be described. The control means H basically controls so that the chaff opening degree (leakage opening degree) increases as the vehicle speed increases, that is, as the grain culm supply amount increases, and the sorting accuracy is maintained. Hereinafter, the subroutine of the selection control will be described with reference to the flowcharts of FIGS.

First, in the process (a), the starting condition of the sorting control is checked. In other words, if the selection auto switch 40 and the threshing clutch switch S4 are on and the turtle rotation speed detected by the turtle sensor S3 is 500 rpm or more, the start condition is satisfied, and the process proceeds to (b) and thereafter.
If any of the conditions is not satisfied, the process returns to the main routine.

In the process (b), the switching position of the crop switch 41 is checked, and according to the switching position, the control target value of the chaff opening degree of rice, wheat, or soybean (hereinafter, referred to as the chaff target value) and the turtle rotation. The process branches to a processing routine for determining a target value of the number (hereinafter referred to as a target value).

In the case of rice, first, in step (c), the signal of the cereal culm sensing switch S1 is checked. When off,
That is, if no cereal stalk is supplied to the handling room A, it is further checked whether or not it is off after turning on (that is, whether it is off at the end of cutting or off at the start of cutting) (process (d)). If it is off after being turned on, the target value of turtle is set to the grain stalk detection switch S
The rotation speed is reduced by 100 rpm from the rotation speed at the time of 1 off.
On the other hand, if it is not off after being turned on, the toy target value corresponding to the value of the toy adjustment VR 43 (hereinafter referred to as the toy adjustment VR value) is determined based on FIG. Further, as shown in the processing (e), the opening / closing of the chaff sheave is stopped for the first 5 seconds, and thereafter, the chaff target value is set to 1.0 volt. However, the opening of the chaff corresponds to a voltage of 0 to 5 volts, and the opening of the chaff is usually adjusted in the range of 1.5 volts (closed side) to 3.5 volts (opened side). Setting the chaff target value to 1.0 volt means bringing the chaff sheave into a fully closed state.

When the grain culm sensing switch S1 is turned on in the process (c), that is, when the grain culm is supplied to the handling room A, as shown in the process (f) and thereafter, FIG. ) Is determined based on the vehicle speed and the value of the chaff adjustment VR42 (hereinafter referred to as the chaff adjustment VR value), and based on FIG. 9B, the tough target value is determined according to the vehicle speed and the tough adjustment VR value. Is determined.

In the case of wheat, the signal of the cereal culm sensing switch S1 is checked in the process (g). When it is off, the opening / closing of the chaff sheave is stopped for the first 5 seconds and then set to 1.0 volt, as shown in the processing (h). As the toy target value, the toy target value corresponding to the toy adjustment VR value is determined based on FIG. 9C.
When the cereal culm sensing switch S1 is ON, as shown in the processing (i) and thereafter, a chuff target value according to the vehicle speed and the chaff adjustment VR value is determined based on FIG. 8B, and FIG. Based on this, a toy target value corresponding to the toy adjustment VR value is determined.

In the case of soybeans, as shown in the processing (N) and thereafter, a chuff target value corresponding to the vehicle speed and the chaff adjustment VR value is determined based on FIG. 8 (c), and based on FIG. 9 (e). A toy target value according to the toy adjustment VR value is determined.

As described above, the vehicle speed and the adjustment V
Based on the chaff target value and the toy target value determined according to the value of R, the chuff opening or the toy rotation speed is actually increased or decreased after the process (l). Regarding the opening degree of the chaff, a difference (chaff deviation) between the target chaff opening value and the current opening degree of the chaff (chaff current value) detected by the chaff opening degree sensor S2 is first obtained in a process (l). The chaff motor M1 is controlled based on the 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 / closing stop).

When the chaff deviation is equal to or more than +0.12 volts, as shown in the processing (ヲ), “chuff open, continuous output”
Is executed, and the chaff motor M1 is driven to the forward rotation side at the maximum speed. On the other hand, when the chuff deviation is equal to or less than -0.12 volts, "chaff close, intermittent output" is executed as shown in the process (W). That is, 120 ms on / 1880 m
Due to the s-off duty drive, the chaff motor M1 is driven at a low speed to the reverse rotation side. That is, when the chaff opening is increased, the value is increased rapidly, and conversely, when the chaff opening is decreased, the value is decreased slowly. This is because, while the vehicle speed (grain culm supply amount) increases, the amount of processed material on the oscillating sorting plate 14 increases sharply, whereas the amount of processed material on the oscillating sorting plate 14 when the vehicle speed decreases decreases. The decrease is considered to be moderate due to the effect of the second reductant.

With respect to the toumi rotation speed, the difference (toumi deviation) between the toy target value and the current toumi rotation speed (toumi current value) detected by the toumi sensor S3 is obtained in the process (f). Based on this, the torsion motor M2 is controlled. As shown in the figure, there are five branches depending on the value of the toumi deviation. In the figure, "Toumi height, continuous output" is the toumi motor M for increasing the toumi speed rapidly.
2 high-speed drive to the forward rotation side, "Tumi height, intermittent output" is low-speed drive to the forward rotation side of the toy motor M2 for slowly increasing the toy rotation speed, and "Tumi low, intermittent output" slowly reduces the tom rotation speed. The low-speed driving of the torsion motor M2 to the reverse rotation side for lowering, or “low torsion, continuous output” means the high-speed driving of the torsion motor M2 to the reverse rotation side to lower the torsion rotation speed quickly.

Hereinafter, another embodiment will be described. Although the combine in the above embodiment is configured so that the second reductant is reduced to the swing sorting plate, some combine may be reduced to the handling room A depending on the combine. Even in that case,
The present invention can be applied since the second reduced product leaks from the handling chamber A to the swing sorting plate and affects the change in the amount of the processed material on the swing sorting plate.

The actuator is not limited to the chaff motor M1 of the above embodiment, but may be an electromagnetic actuator or the like. Further, a link 25 for changing the interval between the plate-like members 17a constituting the chief sheave 17, a link mechanism 2
6. The mechanism including the swing arm 27 and the like can be variously changed.

The means for allowing the processed material on the swinging sorting plate to leak while sorting is not limited to the chaff sheave as in the above-described embodiment. For example, a mesh-shaped or slit-shaped opening is formed by a shielding plate called a slide Glen pan. It may be configured so as to shield and slide a slide Glenpan to change the shielding area of the opening.

The cereal culm supply amount detecting means is not limited to the vehicle speed sensor. For example, a culm thickness sensor for detecting the amount (thickness) of the culm to be conveyed may be provided in a feed chain for conveying the cereal culm to the handling room. Good. Therefore, the present invention is not limited to the combine as in the above embodiment, but can be applied to a threshing device such as a harvester.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of 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 a side perspective view of the threshing apparatus.

FIG. 4 is a diagram showing a structure for changing and adjusting a chaff opening (leakage opening).

FIG. 5 is a diagram showing a structure for changing and adjusting the number of rotations of the tongs.

FIG. 6 is a flowchart of sorting control.

FIG. 7 is a flowchart of sorting control.

FIG. 8 is a graph showing a relationship between a target value of a chaff opening degree, a vehicle speed, and the like.

FIG. 9 is a graph showing a relationship between a target value of the torsion speed and an adjusted VR value and the like.

[Explanation of symbols]

 14 Oscillating sorting plate A Handling room B Sorting device H Control means M1 Actuator S5 Grain stalk supply amount detecting means

Claims (1)

(57) [Claims] 1. A cereal culm supply amount detecting means (S5) for detecting a cereal culm supply amount to a handling room (A), and an oscillating selection of a sorting device (B).
Change and adjust the leakage opening of the processed material on the separate plate (14)
Actuator (M1) and this actuator (M
A control means (H) for controlling the operation of (1), wherein the control means (H) is provided with the cereal culm supply amount detection means (S
Based on the detection information of 5), the actuator (M) is configured to increase the leakage opening as the grain culm supply amount increases.
A threshing sorting controller configured to control the operation of 1), wherein said control means (H), when decreasing the Moshita opening degree, than when increasing the Moshita opening Control the operation of the actuator (M1) so that the operation speed becomes slow.
Threshing sorting control device configured to do so .