JPH05304823A - Sorting control device for threshing - Google Patents

Abstract

PURPOSE:To precisely avoid occurrence of the clogging state of a treated material and emergence of third loss. CONSTITUTION:In a sorting control device for threshing equipped with a control means H for operating falling divergence changing means M1 so as to more enlarge falling divergence of a treated material in an oscillation sorting plate 14 of a sorting device B with a larger amount of grain culm supplied based on discovered information of a grain culm feed amount detecting means S5 for discovering the amount of grain culm fed to a threshing chamber A, the control means H operates the falling divergence changing means M1 at a lower handling speed in reducing the falling divergence than in increasing the falling divergence.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating sorting plate of a sorting device based on the detection information of a grain culm supply amount detecting means for detecting the grain culm supply amount to a handling room. The present invention relates to a threshing selection control device provided with control means for operating a leakage opening changing means so as to increase a leakage opening of a processed material.

[0002]

2. Description of the Related Art For example, in a combine threshing and sorting apparatus, a vehicle speed sensor is used as a grain culm supply amount detecting means, and based on the detection information, a leakage opening degree of a processed material (for example, opening of a chaff sheave) on a swing sorting plate. The control to adjust the degree) has been performed conventionally. In other words, if the vehicle speed is increased and the grain culm supply increases, the leakage opening is increased, and if the vehicle speed is reduced and the grain culm supply is decreased, the leakage opening is reduced to maintain the sorting accuracy constant. Is doing. Conventionally, the increase / decrease speed of the leakage opening, that is, the operation speed of the leakage opening changing means has been constant.

[0003]

However, when the operation speed of the leakage opening changing means is too slow, when the grain culm supply amount suddenly increases, the leakage opening amount increases with respect to the increase in the amount of processed material. Will not be in time, and a clogging state of the processed material on the swing selection plate will occur. On the other hand, if the operating speed of the leakage opening changing means is too fast, when the grain culm supply amount decreases, the leakage opening amount will gradually decrease due to the effect of the second reduced product, although the leakage amount will decrease. Is too fast, and as a result, a phenomenon in which the processed material to be collected is discharged to the outside of the machine, a so-called third loss occurs. Thus, it is not easy to determine an appropriate operation speed that satisfies the contradictory conditions.

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

[0005]

The threshing selection control device of the present invention selects the larger the grain culm supply amount based on the detection information of the grain culm supply amount detecting means for detecting the grain culm supply amount to the handling room. A control means for operating the leakage opening changing means so as to increase the leakage opening of the processed material in the swing selection plate of the apparatus is provided, and the characteristic configuration is that the control means is It is configured such that when the leakage opening is decreased, the leakage opening changing means is operated at a slower operation speed than when the leakage opening is increased.

[0006]

According to the above characteristic structure, the control means increases the leakage opening quickly when the grain culm supply amount increases and conversely increases the leakage amount when the grain culm supply amount decreases. When decreasing the lower opening, decrease slowly.

[0007]

Therefore, the rate of increase / decrease in the leakage opening adjusted based on the increase / decrease in the amount of grain culm supplied is the same as the rate of increase / decrease in the amount of processed material on the actual rocking sorting plate due to the influence of the second reducing substance. Since it is performed in a close state, it is possible to accurately avoid both the occurrence of a clogging of the processed material and the occurrence of the third loss.

[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 machine body V including a pair of left and right crawler traveling devices 1, and a cutting device 4 is provided in front of the machine body V so as to be vertically movable. The mowing device 4 is provided with a weeding tool 5, a scraping device 6, a mowing blade 7, an auger 8 for collecting the crops collected in the lateral center of the machine body, and a conveyor 9 for conveying the collected crops to the threshing device 2. ing.

The threshing device 3, as shown in FIG.
The handling cylinder 10 and the receiving net 11 which rotate around the longitudinal axis of the
Threshing unit (hereinafter referred to as a handling room) A and a handling room A
The sorting unit (hereinafter, referred to as a sorting device) B that sorts and collects the grains from the leakage-treated product. The threshing device 3 is mowed by the reaping device 4 and the auger 8 and the conveyor 9 are used.
Crop such as rice, wheat, soybean, etc.
And is threshed by the rotation of the handling cylinder 10.

That is, threshing while being transferred to the rear of the machine by the handling teeth spirally provided around the handling cylinder 10,
Grains, fine straw debris, and the like leak from the receiving net 11, and the remaining processed products are discharged from the rear end of the receiving net 11. On the inner surface of the ceiling cover 12, the dust transfer valve 13 for adjusting the residence time in the handling chamber of the processed material by promoting or suppressing the rearward transfer of the processed material, and thereby optimizing the threshing condition. Is provided. Further, a grain culm detection switch S1 for outputting an ON signal when the grain culm is supplied to the handling room A and an OFF signal when the grain culm is not supplied is also provided.

The sorting device B comprises a swinging sorting plate 14 and a tomi 15.
Equipped with. The processed substances that have leaked from the handling chamber A and accumulated on the rocking sorting plate 14 are sorted by gravity while being transferred rearward by rocking, and fine straw debris and the like are blown off by the sorting wind from the tomi 15. A Glen pan 16 is provided in the front part of the swing selection plate 14, and a chaff sheave 17,
18 are provided. Further, below the chaff sheave 17, a grain sheave 19 is provided. The grain that has leaked the chaff sheave 17 and the Glen sieve 19 is the first 20
Are collected from the tank, transported by a bucket conveyor (not shown), and stored in the Glen tank 21. Further, the mixture of the grains with branch shoots, straw wastes, etc., which has leaked through the chaff sheave 18 and is collected from the opening 22 is reprocessed by a reprocessing mechanism (not shown), and then swing-sorted by the screw conveyor 23. It is returned to the plate 14.

The opening degree of the above-mentioned chaff sheave 17 (hereinafter referred to as chaff opening degree), that is, the leakage opening degree of the processed material in the swing selection plate 14 can be changed and adjusted by the structure shown in FIG. .. First, the chaff sheave 17 is formed by arranging a plurality of plate-shaped members 17a side by side in the front-rear direction at predetermined intervals. Each plate-shaped member 17a is pivotally attached about the left and right axis, and its lower end is connected by a link 25.
Therefore, when the link 25 is operated to move in the front-rear direction, the plate-shaped members 17a simultaneously rotate, and the adjacent distance t between the plate-shaped members 17a corresponding to the chaff opening changes.

The adjustment of the chaff opening is performed by rotating the sheave motor M1 as the leakage opening changing means in the forward and reverse directions. The forward and reverse rotations are converted into forward and backward movements of the link 25 by the gear type linkage mechanism 26, the swing arm 27, and the wire 28, and as a result, the chaff opening degree is changed as described above. A potentiometer (hereinafter referred to as a chaff opening sensor) S2 for detecting the chaff opening from the rotation angle of the swing arm 27 is provided.

The wind force of the sorting wind generated by the toumi 15 (hereinafter referred to as the toumi wind force) can be changed by changing the rotation speed of the toumi 15 (hereinafter referred to as the toumi rotation speed). That is, as shown in FIG.
The input pulley 15a that rotationally drives the toumi 15 is a split pulley, and its effective diameter is changed by the forward and reverse driving of the electric motor M2. For example, when the electric motor M2 is driven in the normal direction, 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 expanded by a cam mechanism (not shown). As a result, the effective diameter of the portion in contact with the V-belt 23 becomes smaller and the toumi rotation speed becomes higher. That is, the wind power of Toumi becomes stronger. When the electric motor M2 is rotated in the reverse direction, the respective parts move in the opposite manner to the above and the toumi rotation speed becomes low. The swing arm 3
A potentiometer (hereinafter, referred to as a toumi sensor) S3 for detecting the toumi rotation speed from a rotation angle of 0 is provided.

As shown in FIG. 1, the control means H controls the drive of the sheave motor M1 and the toumi motor M2 via the relay unit 33 to change and adjust the chaff opening and the toumi rotation speed. The control means H is composed of a microcomputer, and outputs O1,
O2 drives the sheave motor M1 forward and reverse to output O
3, O4 drives the toumi motor M2 forward and backward.

For example, if the output O1 is turned on (L level) and the output O2 is turned off, the sheave motor M1 is driven in the forward direction, and conversely, if the output O1 is turned off and the output O2 is turned on,
The sheave motor M1 is driven in reverse. When both the outputs O1 and O2 are off or on, the sheave motor M1 is stopped. The same applies to driving the toumi motor M2 with the outputs O3 and O4. The chaff opening degree or the toumi rotation speed that is changed and adjusted by the forward / reverse rotation of the sheave motor M1 or the toumi motor M2 is fed back to the control means H by the chaff opening sensor S2 or the toumi sensor S3.

In the figure, 34 and 35 are changeover switches with a neutral position for manually increasing / decreasing the chaff opening or the toumi rotation speed. Although not shown in FIGS. 4 and 5, 36 to 39 are limit switches that are turned off when the chaff opening or the toumi 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 normal rotation drive of the sheave motor M1 is stopped. In this state, reverse rotation drive, that is, only the closing operation of the chaff sheave is possible. Other limit switches 37-3
The same applies to the function of 9.

As shown in FIG. 1, information of various sensors and switches is input to the control means H in addition to the above-described grain / culm sensing switch S1, chaff opening sensor S2, and toumi 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 mission section of the crawler traveling device 1 and generates a pulse number signal proportional to the number of rotations of the drive wheels of the crawler traveling device 1 to control the means H.
Give to. The 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 amount of harvested grain culm, that is, the amount of grain culm supplied, 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 degree and the number of rotations of tomi described below, and the crop switch 41 is a switch for switching depending on the crops to be cut or threshed (rice, wheat, soybean). is there. Also, the chaff adjustment VR42 and toumi adjustment VR43 are
This is a variable resistor for finely adjusting the automatic control of the chaff opening and the number of rotations of the seaweed according to conditions such as the degree of wetting of the crop.

Next, the automatic control of the chaff opening degree and the toumi rotation speed (hereinafter referred to as selection control) executed by the control means H will be described. The control means H basically controls the chaff opening degree (leakage opening degree) so that the sorting accuracy is maintained as the vehicle speed increases, that is, as the grain culm supply amount increases. The selection control subroutine will be described below with reference to the flowcharts of FIGS. 6 and 7.

First, in the process (a), the starting condition of the sorting control is checked. That is, if the sorting auto switch 40 and the threshing clutch switch S4 are on, and the toumi rotation speed detected by the toumi sensor S3 is 500 rpm or more, the start condition is satisfied and the process after (b) is performed.
If either condition is not satisfied, the process directly returns to the main routine.

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

In the case of rice, the signal of the grain culm detection switch S1 is first checked in the process (C). When off,
That is, if the grain culm is not supplied to the handling room A, it is further checked whether it is turned off after being turned on (that is, whether it is off at the end of mowing or off at the beginning of mowing) (process (d)). If it is OFF after ON, the target value of TOUMI is set to the grain culm detection switch S.
Decrease by 100 rpm from the Toumi rotation speed when 1 is off.
On the other hand, if it is not turned off after being turned on, the toumi target value corresponding to the value of the toumi adjustment VR 43 (hereinafter referred to as the toumi adjustment VR value) is determined based on FIG. 9A. The chaff target value is set to 1.0 volt after the opening and closing of the chaff sheave is stopped for the first 5 seconds, as shown in the process (e). However, the chaff opening is made to correspond to a voltage of 0 to 5 volts, and normally the chaff opening is adjusted in the range of 1.5 volts (close side) to 3.5 volts (open side). Setting the chaff target value to 1.0 volt means to fully close the chaff sheave.

When the grain culm detection 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, as shown in FIG. ) Is used to determine the chaff target value according to the vehicle speed and the value of the chaff adjustment VR 42 (hereinafter referred to as the chaff adjustment VR value), and the toumi target value corresponding to the vehicle speed and the toumi adjustment VR value is determined based on FIG. 9B. Is determined.

Also in the case of wheat, the signal of the grain culm detection switch S1 is checked in the process (G). When it is off, the chaff target value is set to 1.0 volt after the opening and closing of the chaff sheave is stopped for the first 5 seconds as shown in the process (H). As the toumi target value, the toumi target value corresponding to the toumi adjustment VR value is determined based on FIG. 9C.
When the grain culm sensing switch S1 is turned on, the chaff target value corresponding to the vehicle speed and the chaff adjustment VR value is determined based on FIG. 8 (b) as shown in the process (i) and thereafter, and as shown in FIG. 9 (d). Based on this, the toumi target value corresponding to the toumi adjustment VR value is determined.

In the case of soybean, the chaff target value is determined according to the vehicle speed and the chaff adjustment VR value on the basis of FIG. 8 (c), as shown in FIG. 9 (e). A target target value is determined according to the target adjustment VR value.

As described above, the vehicle speed and the adjustment V
Based on the chaff target value and the toumi target value determined according to the value of R, the chaff opening or the toumi rotation speed is actually increased / decreased after the process (e). Regarding the chaff opening degree, first, the difference (chaff deviation) between the chaff target value and the current chaff opening degree (chaff current value) detected by the chaff opening sensor S2 is obtained in the process (le). 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 (chaf opening / closing is stopped).

When the chaff deviation is +0.12 V or more, as shown in the process (2), "chuff open, continuous output".
The chaff motor M1 is driven to the forward rotation side at the maximum speed. On the other hand, when the chaff deviation is −0.12 volts or less, “chuff closing, intermittent output” is executed as shown in the process (wa). That is, 120ms on / 1880m
The chaff motor M1 is driven to the reverse rotation side at a low speed by the duty driving of s off. That is, when the chaff opening is increased, the chaff opening is increased quickly, and conversely, when the chaff opening is decreased, the chaff opening is slowly decreased. This means that while the amount of processed material on the rocking sorting plate 14 when the vehicle speed (cereal culm supply amount) increases increases rapidly, the amount of processed material on the rocking sorting plate 14 decreases when the vehicle speed decreases. This is because the decrease is gradual due to the influence of the second reduced product.

Regarding the Tumi rotation speed, the difference (Tomi deviation) between the target Tumi value and the current Tumi rotation speed (Tumi current value) detected by the Tumi sensor S3 is calculated in the process (F), and this Tumi deviation is obtained. Based on this, the toumi motor M2 is controlled. As shown in the figure, there are five ways to branch depending on the value of the Toumi deviation. In the figure, "TOUMI high, continuous output" is the TOUMI motor M for increasing the TOMY rotation speed quickly.
2 high speed drive to the forward rotation side, "TOUMI high, intermittent output" is low speed drive of the TOMI motor M2 to slowly increase the TOUMI rotation speed, "TOUMI low, intermittent output" slows the TOUMI rotation speed Low speed driving of the TOUMI motor M2 to lower the speed, "TOUMI low, continuous output" means high speed driving of the TOUMI motor M2 to the reverse speed to lower the TOMY rotation speed quickly.

Other examples will be listed below. The combine of the above embodiment is configured such that the second reduction product is reduced to the swing selection plate, but depending on the combine, there are some that are reduced to the handling chamber A. Even in that case,
The second reduced product leaks from the handling chamber A to the oscillating sorting plate, and affects the increase / decrease in the amount of processed material on the oscillating sorting plate. Therefore, the present invention can be applied.

The leakage opening changing means is not limited to the chaff motor M1 of the above embodiment, but an electromagnetic actuator or the like may be used. Further, the mechanism including the link 25 for changing the interval between the plate-like members 17a constituting the chaff sheave 17, the linking mechanism 26, the swing arm 27, etc. can be variously changed.

The means for leaking while selecting the processed products on the rocking sorting plate is not limited to the chaff sheave as in the above embodiment, but for example, a mesh plate or a slit-shaped opening may be a shield plate called a slide Glen pan. It may be configured such that it is shielded and the slide Glen pan is slid to change the shielded area of the opening.

The grain culm supply amount detecting means is not limited to the vehicle speed sensor, and for example, a feed chain that conveys the grain culms to the handling room may be provided with a culm thickness sensor that detects the amount (thickness) of the grain culms to be conveyed. 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.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

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

FIG. 2 is a side view of the combine.

FIG. 3 is a side perspective view of the threshing device.

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

FIG. 5 is a view showing a structure for changing and adjusting the toumi rotation speed.

[Fig. 6] Flow chart of sorting control

FIG. 7: Flow chart of sorting control

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

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

[Explanation of symbols]

 14 Swing sorting plate A Handling room B Sorting device H Control means M1 Leakage opening change means S5 Grain culm supply amount detection means

Claims (1)

[Claims] 1. Based on the detection information of the grain culm supply amount detection means (S5) for detecting the grain culm supply amount to the handling room (A), the larger the grain culm supply amount is, the more the sorting device (B) swings. Sorting board (14)
A threshing selection control device provided with a control means (H) for operating the leakage opening change means (M1) so as to increase the leakage opening of the processed matter in
The threshing selection control device configured to operate the leakage opening changing means (M1) at a slower operating speed when decreasing the leakage opening than when increasing the leakage opening.