JPH04218314A - Controlling apparatus for threshing and grading - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention increases the throughput of a sorting device as the amount of grain culm supplied increases, based on the detection information of a grain culm supply amount detection means that detects the amount of grain culm supplied to a handling room. The present invention relates to a threshing sorting control device provided with control means for adjustment.

0002

2. Description of the Related Art As a conventional example of such a threshing sorting control device, there is a threshing sorting control device for a combine harvester disclosed in Japanese Patent Laid-Open No. 2-54296. In this conventional example, means for detecting the traveling speed of the combine harvester is provided, and this detected information is regarded as the detected amount of grain culm supply. in general,
This is because within the same field, the amount of grain culm supplied to the handling room, that is, the amount of grain culm reaped, is proportional to the traveling speed. The faster the traveling speed, that is, the larger the amount of grain culm supplied, the larger the opening of the chaff sieve provided in the sorting device of the threshing section, and the greater the throughput of the sorting device by increasing the flow rate of the winnowing air. There is.

0003

[Problems to be Solved by the Invention] In the conventional threshing sorting control device described above, when the amount of grain culm supplied suddenly increases due to some reason, even if the opening degree of the chaff sieve is increased, it cannot catch up and the amount of grain on the chaff sieve increases. The amount of material to be processed may increase and clogging may occur. Such situations are generally handled as follows. When an alarm indicating a clogging condition is issued, the operator reduces the traveling speed and at the same time switches the processing capacity control of the sorting device from automatic control to manual control and sets it to a predetermined capacity. No more clogging condition detection,
When the alarm stops, the processing capacity control of the sorting device is switched to automatic control again. However, since the above measures involve switching between automatic control and manual control, they are likely to cause operational errors. Due to an operational error, there is a risk that the clogging condition may worsen to the extent that it cannot be easily cleared. The present invention has been made in view of the above circumstances, and its purpose is to automatically eliminate the clogging condition of the processing material when it occurs or is about to occur. An object of the present invention is to provide a threshing sorting control device that is controlled in the direction of threshing.

0004

[Means for Solving the Problems] The threshing sorting control device according to the present invention detects the amount of grain culm supplied to the handling room based on the detection information of the grain culm supply amount detection means that detects the amount of grain culm supplied to the handling room. A control means is provided for adjusting the processing capacity of the sorting device, and the first characteristic configuration is to adjust the thickness of the layer of the processed material on the swinging sorting plate provided in the sorting device. A processing material amount detecting means is provided, and the control means maintains the processing capacity of the sorting device at the processing capacity immediately before transitioning to that state when the thickness of the layer of the processing material is larger than a predetermined value. The point is that it is configured to do so. A second characteristic configuration is that the sorting device is provided with processing material amount detection means for detecting the thickness of the layer of the processing material on the swinging sorting plate, and the control means is configured to detect the thickness of the layer of the processing material is larger than a predetermined value, the adjustment in the direction of decreasing the throughput of the sorting device is stopped, and only the adjustment in the direction of increasing it is executed.

[0005]

[Operation] According to the first characteristic configuration, while the processing material amount detecting means detects the state in which the thickness of the layer of the processing material on the oscillating sorting plate is larger than a predetermined value, the control means The processing capacity of the sorting device is maintained at the processing capacity immediately before the transition. Therefore, as the grain culm supply amount is reduced by, for example, reducing the traveling speed, the amount of processed material on the swinging sorting plate decreases. When the thickness of the layer of the material to be treated becomes less than a predetermined value, normal control is resumed in which the processing capacity of the sorting device is increased as the amount of grain culm supplied increases. According to the second characteristic configuration,
While the processing material amount detection means detects a state in which the thickness of the material layer on the swinging sorting plate is larger than a predetermined value, the control means adjusts the processing capacity of the sorting device in a direction to reduce it. Stop. Then, in case the amount of grain culm supplied increases due to an erroneous operation or the like, only the adjustment to increase the processing capacity is performed. The effect when the grain culm supply amount is reduced is the same as in the case of the first characteristic configuration.

[0006]

Effects of the Invention In both the first and second characteristic configurations, the control means can perform sorting based on the detection information of the processing material amount detection means without switching the throughput control of the sorting device from automatic control to manual control. Control so that the processing capacity of the device is not reduced. Accordingly, as the grain culm supply amount is reduced, the amount of processed material on the swing sorting plate is reduced, and the clogging state of processed material is cleared or avoided. Therefore, a threshing sorting control device has been obtained that does not cause unnecessary operational errors and can accurately release or avoid the clogging state. Furthermore, according to the second characteristic configuration, even if the amount of grain culm supplied increases, countermeasures are automatically taken, resulting in a safer threshing sorting control device.

[0007]

Embodiments Hereinafter, embodiments in which the present invention is applied to a so-called self-extracting type combine harvester will be described with reference to the drawings.

As shown in FIG. 4, the self-ejecting type combine harvester includes a machine body V equipped with a pair of left and right crawler running devices 1, a boarding control section 2, and a threshing section 3, and a drive unit at the front of the machine body V. It consists of a reaping pre-processing section 4 which is attached so as to be movable up and down. The reaping pre-processing section 4 includes a weeding tool 5 attached to the tip.
, a triggering device 6 for raising grain culms in the field, a cutting blade 7 for cutting the base of the raised grain culms, and a conveying device 9 for reaping and conveying the grain culms to the feed chain 8 of the threshing section 3.

To explain the power transmission system, as shown in FIG.
It is also transmitted to the transmission section 13 of the crawler traveling device 1 via the belt tension type traveling clutch 11 and the hydraulic continuously variable transmission device 12 for traveling. A part of the output transmitted to the transmission section 13 is transmitted to the reaping pre-processing section 4 via a belt tension type reaping clutch 14.
transmitted to. In the figure, S1 is a speed sensor that detects the traveling speed of the aircraft V based on the output rotation speed of the transmission 12, and as described later, the amount of grain culm supplied to the handling room A is detected. It acts as a detection means.

As shown in FIG. 5, the threshing section 3 includes a handling cylinder 1 that handles and processes grain culms that are held and conveyed by a feed chain 8.
5, and a sorting device B that sorts out the leaked waste from the handling room A. The sorting device B includes a winch 16 that sends wind for sorting and a swinging sorting plate 17. At the lower part of the handling chamber A, a receiving net 18 for leaking the threshed material is provided along the lower outer periphery of the handling barrel 15, and it collects single grains and fine straw from the threshed material. The waste leaks from the receiving net 18 to the sorting device B, and the grains and straw waste that cannot leak fall into the sorting device B from the rear end of the receiving net 18.

The swing sorting plate 17 includes a grain pan 19 and a chaff sieve 20 arranged sequentially from the front to the rear, and a grain sieve 21 located below the chaff sieve 20, each of which has a left and right pair. It is fixed between the side plates 22 of and is formed into a plate shape as a whole. At the bottom of the swinging sorting plate 17, there is a top collection part 23 that collects grains leaking from the grain sieve 21, and a part that collects straw waste and other grains that fall from the rear end of the chaff sieve 20 and the rear end of the grain sieve 21. A second product collection section 24 that collects the mixture of
and is provided. Note that the processed materials collected in the second material collection section 24 are returned to the sorting device B and are subjected to the sorting process again.

As shown in FIG. 6, the chaff sieve 8 has a plurality of strip-like members 20a arranged in parallel in the direction of transport of the processed material, each of which is rotatable relative to the left and right side plates 22 with its upper end serving as a fulcrum. It was attached to. The angle of each band plate member 20a is simultaneously changed by pushing and pulling the operating rod 25 pivotally attached to the lower end of each band plate member 20a in the front-rear direction. As a result, the spacing t between adjacent strip plate members 20a (hereinafter referred to as chaff sheave opening degree) can be changed and adjusted.

A DC motor M1 is provided to electrically change and adjust the opening degree of the chaff sheave, and a gear type linkage mechanism 2
6. A swing arm 27 is connected to the operating rod 16 via a release wire 28. In the figure, 29 is a spring that urges the chaff sheave to return to the closing side, and S2 is a potentiometer-type chaff sheave opening sensor for detecting the rotation angle of the swing arm 27 as the chaff sheave opening. The DC motor M1 can be switched between forward and reverse rotation by changing the polarity of the applied voltage.

The winnowing machine 16 uses a so-called split pulley type continuously variable transmission device, so that the amount of air blown can be changed and adjusted by changing its rotation speed. As shown in FIG. 7, the input pulley 30 that rotationally drives the winch 16 is composed of a split pulley, and its effective diameter is changed by driving the DC motor M2 in forward and reverse directions. That is, DC motor M2
The forward and reverse rotation is transmitted to the operating arm 31 via the linkage mechanism 32, the swing arm 33, and the release wire 34, and changes the effective diameter of the input pulley 30. Therefore, by changing and adjusting the rotational speed of the front winnowing machine 16, the amount of air blown therefrom (hereinafter referred to as the winnowing air volume) can be changed and adjusted. Note that 35 is a drive belt for the input pulley 30, and S3 is a potentiometer-type winnow air flow sensor that detects the rotation angle of the swing arm 33 as the winnow air flow rate.

As described above, the sorting device B is configured so that its throughput can be adjusted by changing and adjusting the chaff sieve opening degree and the winnowing air volume. These changes and adjustments are controlled by a control means 36 equipped with a microcomputer, as shown in FIG. Basically, as shown in FIGS. 8 and 9, control is performed so that both the chaff sheave opening degree and the winnowing air volume are increased as the traveling speed increases, based on the information detected by the speed sensor S1 described above. In general, within the same field, the amount of grain culm supplied to handling room A, that is, the amount of grain culm reaped, is proportional to the traveling speed, and the more processed material there is, the larger the chaff sieve opening and the amount of air in the winnowing machine are used for sorting. This is because it is necessary to increase the processing capacity of device B.

Furthermore, as shown in FIG. 1, a chaff sheave opening setting device VR1 and a winnowing air volume setting device VR2 are provided, and by manually setting these, the chaff sheave opening degree and the winnowing air volume can be adjusted within the range shown by broken lines in FIGS. 8 and 9. can be changed and adjusted. These setting devices are used by the operator to change and set the offset of the chaff sieve opening and the air flow rate of the chiffon as necessary, and are used while referring to the monitor display of the amount of processed material by the sieve sensor S4, which will be described below. .

The sheave sensor S4 is processing material amount detection means for detecting the thickness of the material layer on the swinging sorting plate 17, and is attached to the lower surface of the receiving screen 18 as shown in FIG. As shown in FIG. 10, there is a plate-shaped contact T whose upper part is pivoted and whose lower part is rotatable in the direction of transferring the material to be processed (rearward), and the resistance value changes depending on the rotation angle of the contact T. A variable potentiometer PM is provided. The backward rotation angle of the contactor T changes depending on the thickness of the layer of the material to be treated on the chaff sieve 20. In other words, the thicker the layer of the material to be treated, the larger the backward rotation angle of the contact T. Therefore, the control means 36 controls D corresponding to the resistance value of the potentiometer PM.
The thickness of the layer of the object to be treated can be determined from the C voltage input.

[0018] As the swinging sorting plate 17 swings, the rotation angle of the contactor 21 of the sheave sensor S4 changes, and accordingly, the resistance value of the potentiometer PM also changes periodically. The control means 21 controls the D
The C voltage input is sampled, and the average value of the four sampled data is taken as the detection value of the sheave sensor S4. In the following description, "detected value of sheave sensor S4" means this average value.

Sheave sensor S obtained as described above
The detected value of 4 (digital value of 1 to 255) is 5 of 1 to 5.
Divided into stages. 1 means the state in which the layer of the material to be treated is the thinnest, and 5 means the state in which the layer of the material to be processed is the thickest, ie, a clogging state. These five levels of values are displayed on the sheave monitor 37 as shown in FIG. That is, the bar graph display 37a displays the level, and the 7 segment display 37b displays the numerical value. The sheave monitor 37 is provided in the boarding control section 2, and the operator changes and sets the offset of the automatic control amount of the chaff sheave opening degree and the winnowing air volume as described above while referring to this monitor. That is, if the displayed value of the sheave monitor 37 continues to deviate from 2 to 3, the chaff sheave opening setting device VR1 and the winnowing air volume setting device VR2 are operated to adjust the displayed value back to 2 to 3.

The sheave monitor 37 is also equipped with a message display 37c and a buzzer 37d for warning of clogging.
These are activated when the displayed value is 4 or 5. That is, when the display value is 4 or 5, it means that the thickness of the layer of the material to be processed on the chaff sieve 20 is larger than a predetermined value, and the state is in a clogging state (hereinafter referred to as an alarm area) or a state on the verge of that (hereinafter referred to as an alarm area). This means that it is a region of attention). Therefore, when the display value is 4 (warning area), message display 3
7c displays "Shibu Chuui" and the buzzer 3
7d for 0.1 seconds every 2 seconds. Also, the displayed value is 5
At this time (alarm area), the message display 37c displays "SEE BUY" and the buzzer 37d sounds for 0.1 seconds every second.

However, as shown in the flowchart of FIG. 2, the monitor display and alarm based on the detected value of the sheave sensor S4 are not performed when the threshing switch SW1 is off or for 10 seconds after it is turned on. When the threshing switch SW1 is off, the swinging of the swinging sorting plate 17 is stopped and the sheave sensor S4
This is because the thickness of the layer of the processed material cannot be detected correctly. Further, even if the speed change per unit time obtained from the detection information of the speed sensor S1 exceeds a predetermined value, the monitor display and warning are not performed for 3 seconds thereafter. This is because the sheave sensor S4 makes false detections due to its inertia due to rapid speed changes. The threshing switch SW1 is a switch that monitors the state of the threshing clutch 10 described above, and is turned on when the threshing clutch 10 is engaged. The above times (10 seconds and 3 seconds) can be changed arbitrarily by changing the values in the data table stored in the control means 36. It may also be changed using a dip switch or the like.

In the above-mentioned warning area or caution area, the control means 36 performs the following control in order to release or avoid the clogging state of the processing object. As shown in the flowchart in Figure 2, if it is not a warning area or caution area,
That is, when the thickness of the layer of the material to be processed on the chaff sieve 20 is smaller than a predetermined value, as described above, the chaff sieve opening degree and the winnowing air volume are determined based on the detection information of the speed sensor S1.

On the other hand, if it is in the warning area or caution area,
That is, in a state where the thickness of the layer of the material to be processed on the chaff sieve 20 is larger than a predetermined value, the chaff sieve opening degree and the winnowing air volume, that is, the processing capacity of the sorting device B, immediately before shifting to that state are maintained. As a result, when the traveling speed is lowered based on the monitor display and warning, the chaff sheave opening degree and the winnowing air volume are prevented from decreasing accordingly, and the clogged condition is quickly cleared or avoided. There is. Incidentally, if the thickness of the layer of the processed material on the chaff sieve 20 decreases and falls below a predetermined value, that is, if it escapes from the caution/warning area, the chaff sieve opening degree and the winnowing air volume are determined again based on the detection information of the speed sensor S1. Processing takes place.

Next, another embodiment will be explained. Instead of the control in the above embodiment, the following control may be used. That is,
If the thickness of the layer of the material to be treated on the chaff sieve 20 is larger than a predetermined value, only the adjustment in the direction of decreasing the chaff sieve opening degree and the windshield air volume is stopped, and the adjustment in the direction of increasing it is continued. possible. this is,
If the traveling speed is further increased due to incorrect operation, etc.
This is because it is safer to increase the opening degree of the chaff sheave and the air volume of the winch if there is still room.

In the above embodiment, the speed sensor S1 is used as the grain culm supply amount detection means for detecting the grain culm supply amount to the handling room A.
However, as other sensors, for example, the threshing section 3
It is also possible to use a device that detects the thickness of the grain culm layer conveyed by the feed chain 8.

The sorting device B of this embodiment adjusts its processing capacity by adjusting the chaff sieve opening and the winnowing air volume, but various specific configurations can be used to adjust the chaff sieve opening and the winnowing air volume. Can be changed. Further, the present invention can also be applied to a sorting device that performs processing capacity adjustment in various ways as described below. ■ A method that changes the oscillation period (oscillation speed) of the oscillation sorting plate. ■ A method that changes the inclination angle of the oscillating sorting plate. ■ A method in which a shielding plate is moved in and out to adjust the filtration area of chaff sieves, grain sieves, etc. ■A method that changes the spacing between adjacent rack plates in the sorting rack.

[0027] In the above embodiment, the present invention was applied to a so-called self-removal type combine harvester, but it can also be applied to a full-rod loading type combine harvester. The specific configuration of each part can be changed in various ways.

It should be noted that although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

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

[Figure 2] Flowchart of the threshing sorting control device

[Fig. 3] An explanatory diagram of a power transmission system of a combine harvester according to an embodiment of the present invention.

[Figure 4] Side external view of the combine harvester

[Figure 5] A cutaway side view showing the threshing section of the combine harvester.

[Figure 6
]Explanatory diagram showing the opening adjustment mechanism of the chaff sheave

[Figure 7] Explanatory diagram showing the Karakin air volume adjustment mechanism

[Fig. 8] Explanatory diagram showing the relationship between chaff sheave opening and traveling speed

[Fig. 9] Explanatory diagram showing the relationship between the air volume and traveling speed

[Figure 10] Schematic configuration diagram of sheave sensor

[Explanation of symbols]

17 Rocking sorting plate 36 Control means A Handling room B Sorting device S1 Grain culm supply amount detection means S4 Processed material amount detection means

Claims (2)

[Claims] Claim 1: Based on the detection information of the grain culm supply amount detection means (S1) that detects the grain culm supply amount to the handling room (A), the processing capacity of the sorting device (B) increases as the grain culm supply amount increases. A threshing sorting control device is provided with a control means (36) for adjusting to increase the thickness of the layer of the processed material on the oscillating sorting plate (17) provided in the sorting device (B). A processing material amount detection means (S4) is provided to detect the amount of processed material, and the control means (36
) is a threshing sorter configured to maintain the processing capacity of the sorting device (B) at the processing capacity immediately before transitioning to that state when the thickness of the layer of the processed material is larger than a predetermined value. Control device. 2. Based on the detection information of the grain culm supply amount detection means (S1) that detects the grain culm supply amount to the handling room (A), the processing capacity of the sorting device (B) increases as the grain culm supply amount increases. A threshing sorting control device is provided with a control means (36) for adjusting to increase the thickness of the layer of the processed material on the oscillating sorting plate (17) provided in the sorting device (B). A processing material amount detection means (S4) is provided to detect the amount of processed material, and the control means (36
), when the thickness of the layer of the material to be processed is larger than a predetermined value, the adjustment to decrease the throughput of the sorting device (B) is stopped, and only the adjustment to increase it is performed. A threshing sorting control device configured to.