JPH04218313A - 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 that is provided with a control means for adjusting as follows.

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, a speed sensor is provided to detect the traveling speed of the combine harvester.
This detected information is regarded as the detected amount of grain culm supply. This is because, in general, within the same field, the amount of grain culm supplied to the handling chamber, 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] The information detected by the grain culm supply amount detecting means such as the speed sensor described above is substitute information, and it is difficult to correspond to all conditions such as field and variety. In other words, even if the amount of grain culm supplied is the same, the amount of processed material (paddy etc.) after handling will differ depending on the difference in conditions. Generally, in order to correct the throughput control based on the grain culm supply amount of the sorting device according to the above conditions, manual changes and settings are performed. However, when the degree of ear production changes partially within the same field, it is troublesome and requires skill to manually change settings each time. Therefore, in such a case, the setting conditions are determined so that the processing capacity of the sorting device is relatively large in order to avoid clogging when the amount of processed materials increases. in this case,
Even if the amount of material to be processed decreases during reaping of the portion of the ear with poor fruit production, the processing capacity of the sorting device does not change. Therefore, the system will be operated with a processing capacity higher than necessary, which is undesirable from the viewpoint of energy saving and sorting accuracy. The present invention has been made in view of such circumstances, and
The purpose of this is to automatically adjust the processing capacity to an appropriate value when the actual amount of processed material falls below a certain level, compared to the processing capacity of the sorting device that is adjusted based on the grain culm supply amount as described above. An object of the present invention is to provide a threshing sorting control device for adjusting.

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 throughput of the sorting device to increase it, and the first characteristic configuration is to control the thickness of the layer of the processed material on the swinging sorting plate provided in the sorting device. Processing material amount detection means for detecting the amount of processing material is provided, and the control means is configured to maintain the processing capacity at a predetermined processing performance when the thickness of the layer of the processing material is less than a set value. It is in. 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 In a state where the grain culm supply amount is less than a set value, the sorting device is configured to adjust the processing capacity to a processing capacity that is a set value less than the processing capacity determined based on the detection information of the grain culm supply amount detection means.

[0005]

[Operation] According to the first characteristic configuration, when the processing material amount detecting means detects that the thickness of the layer of the processing material on the oscillating sorting plate has become less than a set value, the control means controls the processing of the processing material of the sorting device. Change the capacity to a predetermined processing capacity. This predetermined processing capacity is, for example, the minimum processing capacity or a processing capacity close to it, and this processing capacity is maintained until the thickness of the layer of the object to be treated returns to the set value or more. According to the second characteristic configuration, when the processing material amount detection means detects that the thickness of the processing material layer on the oscillating sorting plate has become less than the set value, the control means detects the The sorting device is adjusted to a processing capacity that is a set value smaller than the obtained processing capacity. Eventually, when the thickness of the layer of the processed material returns to the set value or more, normal control is restored as in the first characteristic configuration, and the sorting device is adjusted to the processing capacity determined based on the grain culm supply amount. .

[0006]

According to the first or second characteristic configuration, when the control means automatically adjusts the processing capacity of the sorting device, it takes advantage of the processing capacity adjustment based on the detection information of the conventional grain culm supply amount detection means. When the amount of processed material falls below a set value, the processing capacity can be changed to a predetermined value, which contributes to improving sorting accuracy and saving energy. Furthermore, according to the second characteristic configuration, it is possible to reduce the processing capacity determined based on the grain culm supply amount by an appropriate value.
It has become possible to perform control more suited to the actual situation.

[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.
is 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 36 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 Y of 4 (digital value of 1 to 255) is divided into five stages of 1 to 5. 1 means the state where the thickness of the layer of the processed material is the thinnest, 5 means the state where the thickness of the layer of the processed material is the thickest,
That is, it means a clogged state. The values of these five stages are shown in Figure 1.
It is displayed on the sheave monitor 37 as shown in FIG. In other words,
The bar graph display 37 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 detected value Y (display value) of the sheave sensor S4 is 4, it means that the condition is on the verge of clogging (hereinafter referred to as a caution area), so the message display 37c displays "SHIEBU CHUI" and the buzzer 37d is turned off for 2 seconds. It rings for 0.1 seconds each time. Also, when the detected value Y (display value) of the sheave sensor S4 is 5, it is a clogging condition (hereinafter referred to as an alarm area), so the message display 37c displays "sieve keihou".
is displayed, 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.

The detected value Y of the sheave sensor S4 is not only used for monitor display and alarm as described above, but also used to control the processing capacity of the sorting device B as described below. As shown in the flowchart of FIG. 2, in a state in which the detection value Y of the sieve sensor S4 is greater than Y0, that is, in a normal state in which the thickness of the layer of the processed material on the chaff sieve 20 is equal to or greater than the set value, the control means 36 operates as described above. Detection information of speed sensor S1
The chaff sheave opening degree T and the winnowing air volume determined based on are used as the final chaff sheave opening/closing control amount R and the winnowing air volume control amount. Here, Y0 can be arbitrarily set as an 8-bit digital value before being divided into five stages, but in this embodiment, it is set to 33H (51 in decimal notation) according to the upper limit of display value 2 after dividing into five stages. ). In addition, Figure 2 is
In order to avoid complexity, only the control of the chaff sheave opening is described, but similar control is performed for the flow rate of the chiffon.

Detection value Y of sheave sensor S4 is set value Y0
If the value becomes less than 1, the control means 36 sets the opening degree that is two steps lower than the chaff sheave opening degree T determined based on the detection information X of the speed sensor S1 as the final opening/closing control amount R of the chaff sheave (the process in FIG. (stomach)). The air flow rate of the kink is lowered by one level, and the processing capacity of the sorting device B is reduced by the set value. In this control, the amount of material to be processed gradually increases and the detected value Y of the sheave sensor S4 changes to the set value Y0.
This will continue until the above returns.

The purpose of the above control is to maintain the sorting accuracy of the sorting device B as much as possible. That is, in order to maintain the accuracy of sorting by the chaff sieve 20 and the winnower 16 of the sorting device B, it is necessary that the thickness of the layer of the processed material on the chaff sieve 20 is at least a predetermined value. In this embodiment, it is necessary that the detected value Y of the sheave sensor S4 is a display value of 2 or more after being divided into five stages. However, for example, when the ripening state of rice ears changes within the same field, the amount of processed material decreases even though the grain supply amount is almost constant, and the detected value Y of the sheave sensor S4 is set as described above. It may be less than the value Y0 (lower limit of display value 2). In such a case, the processing capacity of the sorting device B is reduced by a set value to gradually increase the amount of processed materials. It will also contribute to energy saving.

The process (a) in FIG. 2 of the above embodiment can also be performed as follows. That is, it is replaced with the minimum opening degree or a predetermined opening degree close to it. Similarly, the air flow rate of the drawer is replaced with the minimum air flow rate or a predetermined air flow rate close to the minimum air flow rate, and the processing capacity of the sorting device B is fixed at the minimum capacity or a predetermined capacity close to the minimum capacity. In this case as well, this predetermined capability is maintained until the detected value Y of the sheave sensor S4 returns to the first set value Y0 or higher.

In the above embodiment, the speed sensor S1 serves 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 throughput 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.

[0028] 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. Oscillating 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) that adjusts to increase the thickness of the layer of the processed material on the swinging sorting plate (17) provided in the sorting device (B). A processing material amount detection means (S4) is provided for detecting the amount of processed material (S4), and the control means (S4)
36) is a threshing sorting control device configured to maintain the processing capacity at a predetermined processing capacity when the thickness of the layer of the processed material is less than a set value. 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) that adjusts to increase the thickness of the layer of the processed material on the swinging sorting plate (17) provided in the sorting device (B). A processing material amount detection means (S4) is provided for detecting the amount of processed material (S4), and the control means (S4)
36), when the thickness of the layer of the material to be treated is less than the set value, the processing capacity is selected based on the processing capacity determined based on the detection information of the grain culm supply amount detection means (S1) by the set value. A threshing sorting control device configured to regulate the device (B).