JPH062519Y2 - Automatic proper sorting device in combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to an automatic proper sorting apparatus in a combine.

(B) Conventional Technology Conventionally, as a structure for automatically controlling a sorting unit of a threshing machine, for example, as disclosed in Japanese Patent Laid-Open No. 54-66249,
There is a swinging sorting device in the sorting unit that is equipped with a sensor that detects the amount of processed material depending on the thickness of the material to be sorted. A mechanism for automatically controlling the speed is provided so as to increase the dynamic speed.

Further, as disclosed in Japanese Patent Application No. 59-22152, there is one in which the inclination angle of the fin of the chaff sheave is controlled based on the detection result of the sensor for detecting the thickness of the object to be sorted.

Further, as disclosed in Japanese Patent Laid-Open No. 59-63110 and Japanese Utility Model Laid-Open No. 56-117638, controlling the variable direction plate based on the detection results of the left and right sensors that detect the thickness of the objects to be sorted. Therefore, there is a method in which the left-right distribution of the objects to be sorted is made uniform.

(C) Problems to be Solved by the Invention However, in the above-mentioned conventional technology, the swing speed and the inclination angle of the fins of the chaff sheave are simply controlled according to the amount of the object to be sorted, or the left and right sides of the object to be sorted are controlled. It is a technique of correcting uneven distribution of distribution or only one of them, and if these are simply combined, for example, the total amount of the objects to be sorted is a proper amount, but the objects to be sorted are unevenly distributed on either side. In such a case, when the fin tilt angle is controlled first, there is a problem that the fin tilt angle is unnecessarily changed to impair proper selection.

(D) Means for Solving the Problems In the present invention, a sensor for detecting the lateral distribution state of the rocking / sorting section is arranged, and the rocking / sorting section changes the flow direction of the objects to be sorted. A variable direction plate for this is arranged, and further, the chaff angle of the chaff sheave of the same swing selecting section is configured to be freely changeable, based on the detection value of the sensor, the variable direction plate is controlled with priority, Then, it is intended to provide an automatic proper sorting apparatus in a combine configured to control the fins constituting the chaff sheave.

(E) Action / Effect According to this invention, the sorting unit is provided with a sensor for detecting the distribution state of the objects to be sorted in the left-right direction. Detecting uneven distribution, if there is no difference in the detection value of each sensor, it becomes possible to detect the entire amount of the object to be sorted, first, based on the difference in the detection value, priority is given to the control of the variable direction plate, then, After the detection values become the same, the fins of the chaff sheave are controlled based on the detection value so that the objects to be sorted are evenly distributed over the entire surface of the chaff sheave, and the fins are suitable for the total amount of the objects to be sorted. It becomes possible to perform the sorting work at the inclination angle, which has the effect of improving both sorting accuracy and sorting efficiency.

In other words, the above-mentioned adverse effect, that is, the total amount of the objects to be sorted is a proper amount, but even if the objects to be sorted are unevenly distributed to the left or right, first, the variable direction plate is controlled to control the left and right of the objects to be sorted. Equalize the distribution of directions. In this way, when the distribution of the objects to be sorted in the left-right direction is equalized, the total amount of the objects to be sorted is originally an appropriate amount. Therefore, naturally, the detection value of the sensor is that the entire amount of the objects to be sorted is an appropriate amount. Since the fin maintains the current state, it is possible to prevent the adverse effect of impairing proper selection by changing the fin inclination angle even though the total amount of the objects to be sorted is appropriate.

(F) Example To explain the example of the present invention in detail with reference to the drawings, (A) shows a combine, a mowing part (1) is provided in the front part, and a threshing part (2) is provided behind it. A sorting section (3) is provided, and further behind it,
The waste straw processing unit (4) is provided, and the traveling unit (5) is provided at the lower part of the machine body. While traveling at the traveling unit (5), the harvesting unit (1) cuts grain culms, and the threshing unit. (2) Threshing and sorting are performed in the sorting unit (3), and the discharged straw is processed in the discharged straw processing unit (4) at the rear to finally collect the refined grain.

(6) is a feed chain, (7) is a threshing chamber in the threshing section (2), (8) is a sling barrel mounted on the sling chamber (7), and (9) is a crimp net stretched below the sling barrel. Indicates.

The sorting part (3) is arranged below the threshing part (2), and a Kara-mino (10) is installed in front of it to generate a sorting wind, and a feed pan (11) is arranged above the Kara-mitsu (10). The chaff sheave (12) is behind the feed pan (11) and the gren sheave is below it.
Arrange (13) respectively, feed pan (11), chaff sheave
(12) and the Glen Sieve (13) together form a swingable sorting section (14) that is swingable via a swinging mechanism. 15) are installed in series, and the most screw conveyor (16) for collecting fine grain is arranged below the chaff sheave (12), and the straw rack (15)
The second screw conveyor (17) is placed below the second screw conveyor, and the second grain is returned from the second screw conveyor (17) to the handling room (7) through the lifting cylinder (18) for reprocessing. It is configured accordingly.

The gist of the present invention is to detect the left and right distribution of the objects to be sorted (30) at the left and right positions above the swing selecting section (14) of the combine (A), for example, the chaff sheave (12). This sensor (L) (R) is installed, and this left and right sensor (L)
Based on the detection result by (R), it is possible to automatically change the angle of the fin (12a) of the chaff sheave (12) having a selection function, and the upper surface of the feed pan (11) in front of the chaff sheave (12). The variable direction plate (31) is arranged in the, and the right and left angles of the same direction plate (31) can be automatically changed to perform automatic proper control of sorting. Composed.

That is, the chaff sheave (12) has a large number of fins (12a) arranged side by side with a certain gap, and the grains threshed by the handling cylinder (8) pass through the gap while being swung to be selected. The fin (12a) is configured to be tiltable so that the tilt angle can be changed by the tilt angle changing means described below.

As the inclination angle changing means, as shown in FIG. 3, a large number of fins (12a) having a substantially L-shaped cross section are installed in the rectangular frame (19) in the left-right direction, and the fins (12a) are provided at the left and right ends. Shaft
(20) is projected and the left and right side plates (19a) of the rectangular frame (19) are inserted, and the base end of the connecting arm (21) is attached to the protruding end of the coaxial part (20) from one side plate (19a). The pins (22) projecting from the tip of the arm (21) in series are inserted into the connecting plates (23) arranged along the side plate (19a), respectively, and the pins (22) of the connecting plate (23) are inserted. By sliding back and forth, many fins (12b) are simultaneously rotated about the shaft (20) by the same angle.
One end of (23) is interlocked with a lever (27) connected to the motor (26) via a rotating arm (24) and a connecting rod (25), and the fin (12a) is activated by the operation of the motor (26). ) Is configured to change the inclination angle.

In the figure, (28a) and (28b) are limiters for the turning angle of the lever (27), and (29a) and (29b) are the fins (12a) with a constant inclination at the center when the motor (26) is free. Shows a spring for holding.

The chaff sheave (12) configured in this way is a fin (12
As the inclination angle of a) is made closer to the vertical, the passing amount of the workpiece dropped on the upper surface of the sheave (12) is increased, and conversely, it is decreased as it is made more horizontal.

The variable direction plate (31) has a substantially plate-like shape, and the front end edge of the plate (31) is fixed to the upper part of the pivot shaft (32) through which the feed pan (11) is inserted vertically, and the lower part of the pivot shaft (32) is fixed. The lever (33) connected in series with the motor (35) is interlockingly connected via the worm gear (34), and the rear part of the variable direction plate (31) is swung left and right by the forward and reverse rotations of the motor (35). An object to be sorted (30) flowing from the front to the rear on the upper surface of the feed pan (11) is moved in the left-right direction.

And each sensor (L) (R) is a chaff sheave (1
2) At the left and right positions of the upper surface, which are arranged above the upper surface by a predetermined distance, the sensing bars (L1) and (R1) vertically installed from the sensors (L) and (R) are attached to the upper surface of the chaff sheave (12). Items to be sorted (3
(0) abuts and the bar (L1) (R1) tilts, the sensor
The switches inside (L) and (R) are designed to operate ON-OFF.

A predetermined dead band width is set for the switch.

FIGS. 5, 6, and 7 show the relationship between the sensors (L) and (R) and the objects to be sorted (30). In FIG. 5, the objects to be sorted (3
0) is too large and both sensing bars (L1) (R1) are in contact with the item to be sorted (30). In Fig. 6, the amount of the item to be sorted is too small and both Sensing bar (L1) (R1)
In Fig. 7, the amount of the objects to be sorted (30) on the upper surface of the chaff sheave (12) is appropriate as a whole, but a large amount is unevenly distributed only on the right side, (12)
Although the sensing bar (R1) of the upper right sensor (R) is in contact with the object to be sorted (30), the same bar (L1) of the upper left sensor (L) does not contact, From the combination of the output states of these sensors (L) and (R), the chaf sheave (1
2) It is possible to detect the distribution state of the objects to be sorted (30) on the upper surface in the left-right direction and the total amount of the objects to be sorted (30).

From the combination of the output state of the sensor (L) (R) as described above, determine the lateral distribution state of the selection target (30) on the chaff sheave (12) and the amount of the selection target (30). The same sheave (12)
In order to correct the distribution state of the upper selection object (30) in the left-right direction of the selection object (30) and to control the passing amount of the sheave (12) to properly maintain the total amount, The process shown in the flow chart of the figure is implemented.

That is, when both the left and right sensors (L) and (R) are ON, the left and right swing angles of the variable direction plate (31) should be changed because the distribution of the objects to be sorted (30) in the left and right direction is uniform. However, the limiter (28a) is O because the total amount of the objects to be sorted (30) is too large.
If there is a margin in the vertical rotation angle of the FF, that is, the fin (12a), rotate the motor (26) forward to rotate the fin (1).
2a) is brought closer to vertical to increase the passing amount of the selection target (30) and decrease the amount of the selection target (30) on the upper surface of the chaff sheave (12).

At this time, when the sensors (L) (R) and the limiter (28a) are all ON, there are too many items to be sorted (30) that cannot be controlled even if the inclination angle of the fin (12a) is changed to the limit. Therefore, a buzzer etc. is activated to notify the operator of this fact, the traveling speed of the combine (A) is reduced to reduce the amount of cutting and threshing, and the amount of the selection target supply to the chaff sheave (12) is reduced. Take measures such as letting them.

When both sensors (L) and (R) are OFF, the distribution of the objects to be sorted (30) in the left-right direction is uniform, so the left-right swing angle of the variable direction plate (31) is not changed, If the limiter (28b) is off and the fin (12a) has a sufficient inclination angle to the horizontal direction because the total amount of the objects to be sorted (30) is too small, the motor (26) is rotated in the reverse direction to rotate the fin (12a). Tilt it so that it approaches horizontal.

Also, even though the left sensor (L) is OFF,
When the right sensor (R) is ON, the objects to be sorted (30) are largely unevenly distributed only on the right side of the upper surface of the chaff sheave (12), so the motor (35) is rotated and the variable direction plate ( 31) Rotate the rear part to the left to move the to-be-sorted object (30) flowing backward on the upper surface of the feed pan (11) to the left to adjust the layer thickness of the to-be-sorted object (30) to the left or right. Make it even.

After that, when the left and right sensors (L) and (R) are both ON, the total amount of the objects to be sorted (30) is too large.
If (28a) is OFF, that is, if there is a margin in the vertical rotation angle of the fin (12a), the motor (26) is rotated in the forward direction to bring the fin (12a) closer to the vertical direction, and the object to be sorted (30). To increase the amount of passage of the chaff sheave (12) and reduce the amount of the objects (30) to be sorted on the upper surface of the chaff sheave (12). On the contrary, both sensors (L) and (R) are OFF
At this time, the total amount of the objects to be sorted (30) is too small, so if the limiter (28b) is off and the fin (12a) can be tilted in the horizontal direction, rotate the motor (26) in the reverse direction. fin
Tilt (12a) so that it approaches horizontal.

In short, as shown in the chart of Fig. 8, ON-O
Fins while the FF state is different between the left and right sensors (L) and (R)
The left and right sensors are in the ON-OFF state without controlling the amount of the object to be sorted (30) on the upper surface of the chaff sheave (12) by (12a).
When there is no difference between (L) and (R), the amount of the selection target (30) on the upper surface of the chaff sheave (12) is controlled by the salmon fins (12a), that is, the variable direction plate (31) is prioritized. By doing so, the left and right distribution states of the objects to be sorted (30) detected by the sensors (L) and (R) on the downstream side of the variable direction plate (31) are equalized, and then the fins (12a ) Controls the amount of the object to be sorted (30) on the upper surface of the chaff sheave (12), it is possible to accurately detect the total amount of the object to be sorted (30), and therefore the object to be sorted (3)
Although the total amount of (0) is appropriate, the inclination angle of the fins (12a) is changed to prevent the adverse effect of impairing proper selection.

The operation of the motors (26) and (35) is designed to operate with a delay of a certain time by the function of the timer of the microcomputer (M), and by setting the delay of this certain time, the chaff sheave ( 12) Eliminates the influence of accidental change in the amount of the object to be sorted (30) on the upper surface.

In order to perform the above control operation, a control device having the configuration shown in the block diagram of FIG. 9 is provided. In the figure, (M) indicates each sensor (L) (R) and limiter (28a) (28b). A microcomputer for processing the output of FIG. 1 according to the above-mentioned flowchart is shown, which is configured to rotate the motors (26) and (35) forward and backward by the output from the computer (M).

The microcomputer (M) has a timer function.

It should be noted that the sensors (L) and (R) may be anything as long as they detect the amount of the object to be sorted (30) on the upper surface of the chaff sheave (12), and in addition to the contact type sensor shown in this embodiment, non-contact For example, an ultrasonic sensor or the like can be used, and in the present embodiment, binary type control is performed using switch type left and right sensors (L) and (R), but an analog type left and right sensor is used, By continuously measuring the left-right distribution of the objects to be sorted and continuously changing the fin tilt angle of the chaff sheave and the left-right swing angle in the variable direction, stepless control of the detection values of the left-right sensor It is also possible to do

[Brief description of drawings]

Figure 1 is. 1 is a schematic side view of a cross section of a combine having an automatic proper sorting device according to the present invention. FIG. 2 is a schematic vertical sectional view of the threshing / sorting unit. FIG. 3 is a perspective view of a chaff sheave. FIG. 4 is a schematic plan view of a variable direction plate, a feed pan, and a chaff sheave. 5, 6 and 7 are schematic views showing the operation of the sensor. FIG. 8 is a control flowchart. FIG. 9 is a block diagram of the control device. (L) (R): Left and right sensor (12): Chaf sheave (12a): Chaf sheave fin (14): Swing sorting section (30): Sorted object (31): Variable direction plate

Claims (1)

[Scope of utility model registration request] Claims: 1. A sensor (L) (R) for detecting the left-right distribution state of the swing selecting section (14) is provided, and the swing selecting section is also provided.
A variable direction plate (31) for changing the flow direction of the objects to be sorted (30) is arranged on (14), and the chaff angle of the chaff sheave (12) of the swing sorting section (14) can be changed. In accordance with the detection values of the sensors (L) and (R), the variable direction plate (31) is preferentially controlled, and then the fin 12a that constitutes the chaff sheave (12) is configured to be controlled. Automatic proper sorting device for combine harvesters.