JP2622436B2 - Threshing device abnormality detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cereal stalk supply detecting means for detecting whether or not cereal stalks are supplied to a threshing apparatus, and a layer for detecting the thickness of a layer of a processed material on a swing sorting plate. The present invention relates to an abnormality detection device for a threshing device provided with a thickness detection means.

[0002]

2. Description of the Related Art Conventionally, in a control device of a threshing apparatus provided with such a layer thickness detecting means, if the thickness of the layer of the processed material on the swing sorting plate becomes a predetermined value or more, If the processing continues for a predetermined time or more, it is determined that a clogged state of the processed material has occurred and an alarm is issued.

[0003]

However, this detection method alone does not always detect the clogged state of the processed material. In other words, even if clogging occurs in the lower part of the rocking sorting plate and the grain cannot leak from the lower part, the amount of so-called secondary material that falls from the rear end of the lower part and is collected together with the straw waste And the amount of so-called thirds discharged outside the aircraft increases,
In some cases, the thickness of the layer of the processed material on the rocking sorting plate does not reach a predetermined value determined to be abnormal.

[0004] In this state, if the threshing / sorting operation is continued, the second material with insufficient sorting is shaken without obtaining the first thing that should originally leak from the lower part of the swinging sorting plate and be collected. Only the operation of returning to the dynamic sorting plate is repeated. In addition, since the so-called third loss, in which grains are mixed with the third product and discharged, increases, it is necessary to detect such an abnormal state as soon as possible and to perform a process such as alerting the operator. .

The present invention has been made in view of the above circumstances, and an object of the present invention is to accurately detect the clogging state of the lower part of the swing sorting plate as described above.

[0006]

SUMMARY OF THE INVENTION An abnormality detecting apparatus for a threshing apparatus according to the present invention includes a cereal culm supply detecting means for detecting whether or not cereal culm is supplied to the threshing apparatus, and a processed material on a swing sorting plate. An abnormality detecting device of a threshing device provided with a layer thickness detecting means for detecting the thickness of the layer, the characteristic configuration of which is based on the detection information of the two detecting means, the supply of cereal stems to the threshing device If the thickness of the layer of the processing object does not decrease by more than a set value within a predetermined time after the disappearance of the processing object, there is provided a judging means for judging an abnormality.

[0007]

As described above, in the state where clogging occurs in the lower part of the rocking sorter plate and the grain cannot be leaked from the lower part of the rocking sorter, the processed material containing the grain on the rocking sorter plate is It falls along with the straw waste from the rear end of the oscillating sorting plate, is mainly collected as a second product, and is returned to the oscillating sorting plate. Therefore, even if there is no supply of the grain culm to the threshing apparatus, the thickness of the layer of the processed material on the rocking sorter plate does not readily decrease.

Therefore, according to the above characteristic configuration, the discriminating means detects the processed material detected by the layer thickness detecting means within a predetermined time after the cereal culm supply detecting means knows that the cereal culm supply to the threshing apparatus has been lost. If the thickness of the layer does not decrease by more than the set value, it is determined to be abnormal. For example, a storage area for storing the thickness of the layer of the processed material is provided, and while the supply of the grain stalk to the threshing device is detected, the stored value is updated every time, and the supply of the grain stalk to the threshing device is not detected. For example, the current value of the thickness of the layer of the processed object is compared with the stored value. Then, if the difference between the current value and the stored value does not exceed the set value even after the lapse of the predetermined time, it may be determined that an abnormality is detected.

[0009]

As described above, it is possible to accurately detect an abnormality caused by the clogged state of the leaking portion of the swing sorting plate by the simple processing as described above.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a combine threshing apparatus will be described below with reference to the drawings.

The self-removing type combine shown in FIG. 2 includes a pair of right and left crawler traveling units 1, a threshing unit 2, a control unit 3, a cutting unit 4, and the like. The cutting unit 4 includes a weeding tool 5, an apparatus 6 for raising planted grain culms, and a cutting blade 7.
Transported to In addition, a stock sensor S1 as a grain culm supply detecting means for detecting whether or not grain culm is supplied to the threshing apparatus 2 is provided at a tip portion of the transport device 9.

The power transmission system is configured as shown in FIG. The power of the engine E is transmitted to the threshing device 2 via the threshing clutch 10 and transmitted to the transmission section 13 of the crawler traveling device 1 via the traveling clutch 11 and the hydraulic continuously variable transmission 12. Power is transmitted to the mowing unit 4 from the transmission unit 13 via the mowing clutch 14. In order to detect whether or not the threshing device 2 is operating, a threshing switch SW1 for detecting the on / off state of the threshing clutch 10 is provided.

As shown in FIG. 4, the threshing apparatus 2 comprises
5, a feed chain 16 for supplying the stalks supplied from the mowing unit 4 to the handling room, a cross flow fan 17 for discharging dust, and a toy 18 for sorting the processed material after threshing.
And a swing sorting plate 19, a first opening 20 and a second opening 21 for collecting the processed material after the sorting.

The grain culm supplied to the handling room A is threshed by the rotation of the handling drum 15. A receiving net 22 is provided in the lower part of the handling room A, and a single grain of the processed material after threshing leaks from the receiving net 22 to the swing sorting plate 19. The processed material that could not be leaked from the receiving net 22 falls to the swing sorting plate 19 from the rear end of the receiving net 22.

The swing sorting plate 19 is composed of a grain pan 23 located above the tongue 18, a chaff sheave 24 located behind it, a Glen sheave 25 located below it, and the like. The grains that have leaked from the chaff sheave 24, which is the lower part of the rocking sorting plate 19, and that have further leaked from the grain sieve 25, are collected from the mouth 20 and stored in a tank or the like. The mixture of the grain and the straw chips dropped from the rear end of the chaff sheave 24 or the rear end of the Glen sheave 25 is collected from the second port 21 and returned to the swinging sorting plate 19.

The chaff sheave 24 is, as shown in FIG.
A plurality of strip-shaped members 24a juxtaposed in the processing object transfer direction
Are rotatably attached to the left and right side plates. When the link 25 pivotally attached to the lower end of each band-shaped member 24a is moved in the front-rear direction, the angle of each band-shaped member 24a is simultaneously changed. as a result,
While maintaining the parallelism of each strip-shaped member 24a, the adjacent interval t
(Hereinafter referred to as “chaff sheave opening”).

A sheave motor M1 for electrically changing and adjusting the opening of the chief sheave is provided, and is connected to the operation rod 25 via a gear-type linkage mechanism 26, a swing arm 27, and a release wire 28. The swing arm 2
7 is provided with a potentiometer type chief sheave opening sensor S2 for detecting the chief sheave opening from the rotation angle. Reference numeral 29 denotes a spring for urging the chaff sheave 24 to return to the closed side. The sheave motor M1 is switched between forward rotation and reverse rotation by changing the polarity of the applied voltage.

The tow 18 is for blowing off the straw debris on the oscillating sorting plate 19, and the wind force is used to open the fan case cover 18a as shown in FIG. This is done by changing In other words, the larger the degree of opening of the turtle exhaust air, the greater the amount of air escaping from the opening, and the smaller the amount of wind (hereinafter referred to as storm wind) exerted on the processed material on the swing sorting plate 19.

As shown in FIG. 6, the adjustment of the turtle exhaust air opening is performed by a turtle motor M2. As in the case of the sheave motor M1, by changing the polarity of the applied voltage to rotate the torsion motor M2 forward or backward, the fan case cover 18a opens and closes via the linkage mechanism 30, the swing arm 31, and the rods 32 and 33. In the figure, S3 is a swing arm 31
Is a potentiometer-type exhaust air opening sensor for detecting the rotation angle of the air outlet as an air exhaust opening.

As shown in FIG. 1, the control means H provided with a microcomputer controls the sheave motor M1 and the turtle motor M2, as shown in FIG.
This is performed by controlling the driving of. The control means H includes the threshing switch SW1, the stock sensor S1, the chaff sheave opening sensor S2, and the turtle exhaust air opening sensor S described above.
No. 3 detection information is input.

At the rear end of the frame of the receiving net 22, there is provided a layer thickness sensor S4 as a layer thickness detecting means for detecting the thickness of the layer of the processed material on the swing sorting plate 19. Are also input to the control means H. The control means H controls the rocking sorter 1 based on the detection information while the threshing device 2 is operating.
9. Change and adjust the sorting processing capacity so that the thickness of the layer of the processed material on 9 is maintained in an appropriate range. That is, the layer thickness sensor S4
Based on the detection information, the opening degree of the chaff sheave and the opening degree of the exhaust air are controlled by feedback. The reason why the layer thickness of the processed material on the swing sorting plate 19 is maintained in an appropriate range is to maintain appropriate sorting accuracy.

As shown in FIG. 7, the layer thickness sensor S4 has a sensor bar T suspended swingably around the axis of the horizontal axis and a rotation angle of the sensor bar T in the rearward direction (transfer direction of the processing object). It consists of a potentiometer PM that converts to a value. The sensor bar T is such that the downstream portion T1 in the processing object transfer direction is the upstream portion T2.
It is formed in a longer forked shape. When the thickness of the layer of the processing object is small, the downstream portion T1 is in contact with the processing object, and when the layer thickness is large, the upstream portion T2 is in contact with the processing object.

With the above structure, as the thickness of the layer of the processing object increases, the rotation angle of the sensor bar T increases, and the resistance value of the potentiometer PM increases. Eventually, a DC voltage corresponding to the thickness of the layer of the processed object is obtained from the layer thickness sensor S4 as detection information. The control means H converts the DC voltage into an 8-bit digital value (0-255), and then divides the DC voltage into six values 0-5 (hereinafter referred to as sheave levels). Then, based on the sheave level, the chaff sheave opening and the turtle exhaust air opening are feedback-controlled.

When the sheave level is 2, the swing sorting plate 19
It is stated that the thickness of the processed material is in an appropriate range. Therefore, when the sheave level becomes 3 or more, the opening degree of the chaff sheave is increased and the opening degree of the turtle exhaust air is decreased. Increase the sorting capacity. Conversely, when the sheave level becomes 1 or less, the opening degree of the chaff sheave is decreased and the opening degree of the turtle exhaust air is increased.

The sheave level is used as information for adjusting and controlling the sorting performance, is displayed on a monitor 34 provided in the control unit 3, and is also used for an alarm. That is, as shown in FIG.
The level is indicated by a and the numerical value is indicated by a 7-segment display 34b.

The monitor 34 also has a character display 34c and a buzzer 34d. Then, when the sheave level reaches 5, the control means H displays "Sheet Chuui!" On the character display 34c. Further, if this state continues for 10 seconds or more, "Sieve Keiho!" Is displayed and the buzzer 35d is displayed.
An alarm is issued at. The operator takes necessary measures such as lowering the traveling speed based on these warnings, and avoids the occurrence of a clogging state due to the processing object layer becoming too thick.

However, the chaff sheave 2 of the swing sorting plate 19
In some cases, the sheave level does not reach 5 while the grain 4 is in a clogged state and the grain cannot be leaked from the lower part of the chaff sieve 24. In other words, the chaff sheave 24 is clogged cleanly and becomes a single plate, and the processed material including the kernels falls from the rear end of the chaff sheave 24 together with the straw, and is collected as a second product or a third product. It is discharged outside the machine as an object.

In order to determine such a state and to issue the above-mentioned "Shift Keiho!" Display and to issue an alarm by the buzzer 35d, the control means H as a determining means performs control as shown in FIG. That is, if the thickness of the layer of the processed product does not decrease by the set value or more after a predetermined time after the supply of the grain culm to the threshing apparatus 2 is determined to be abnormal, it is determined that there is an abnormality, and the above-mentioned alarm or the like is output. Hereinafter, description will be made with reference to FIG.

When the stock sensor S1 is ON, that is, when the supply of cereal stalks to the threshing apparatus 2 is detected, as described above, the opening of the chaff sheave and the opening of the turtle exhaust air are determined based on the sheave level and the like. Automatic adjustment is performed. At this time, the sheave level is stored. That is, the stored value is updated every time (after processing (A)).

When the supply of the grain culm to the threshing apparatus 2 is stopped, that is, when the stock sensor S1 is turned off, the predetermined time starts counting from this time, and the current value of the sheave level is compared with the stored value ( After processing (b)). If the difference between the stored value and the current value becomes greater than or equal to the set value (for example, 2) within a predetermined time (for example, 1 minute), the flag FLAG is set and the process branches to (C) from the next time, so that an alarm or the like is output. Never. If the difference between the stored value and the current value does not exceed the set value even after the lapse of the predetermined time, an alarm or the like is output. still,
When the threshing clutch 10 is disengaged and the threshing switch SW1 is turned off, the alarm and the like are released.

Hereinafter, another embodiment will be described. The release of the warning or the like may be performed not only when the threshing clutch 10 is disengaged but also, for example, when the difference between the stored value of the sheave level and the current value becomes equal to or larger than the set value.

Although the sheave level difference (set value) and the predetermined time as conditions for outputting an alarm or the like in the above embodiment can be changed by a microcomputer program, these parameters can be changed and set by a dip switch or the like. It may be.

In the above-described embodiment, the condition for outputting an alarm or the like is determined using the sheave level obtained by dividing the detection value of the layer thickness sensor S4 into six steps. May be used as it is.

The swing sorting plate of the above embodiment is provided with a chaff sheave, and the opening degree of the chaff sheave corresponds to the processing object leakage opening degree. However, the present invention is not limited to this, and for example, a shielding called a slide Glen pan The present invention can also be applied to a swing sorting plate of a type in which the filtration area where the processed material leaks is adjusted by moving the plate.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

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

FIG. 2 is a side view of the combine.

FIG. 3 is a diagram showing a power transmission system of the combine.

FIG. 4 is also a perspective view showing a combine threshing apparatus.

FIG. 5 is a schematic diagram of a chaff sheave opening adjustment mechanism.

FIG. 6 is a schematic view of a mechanism for adjusting the degree of opening of turtle exhaust air.

FIG. 7 is a side view of the culm thickness detecting means.

FIG. 8 is a flowchart of threshing sorting control including abnormality detection.

[Explanation of symbols]

 2 Threshing device 19 Swing sorting plate H discriminating means S1 Grain stalk supply detecting means S4 Layer thickness detecting means

Claims (1)

(57) [Claims] 1. A grain culm supply detecting means (S1) for detecting whether grain culm is supplied to a threshing device (2), and a thickness of a layer of a processed material on an oscillating sorter plate (19). An abnormality detection device for a threshing device provided with a layer thickness detection means (S4) for detecting, wherein the supply of grain culm to the threshing device (2) based on detection information of the two detection means (S1, S4) An abnormality detection device for a threshing device, comprising a determination means (H) for determining that an abnormality has occurred if the thickness of the layer of the processed object does not decrease by a predetermined value or more within a predetermined time after the disappearance of the processing object.