JP3162035B2 - Combine sorting control 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 combine sorting control device and, more particularly, to a control device for controlling the operation of a sorting unit when a self-removing combine or the like travels.

[0002]

2. Description of the Related Art Conventionally, it has been known that the sorting accuracy of grains in an automatic threshing apparatus of a combine depends on the amount of grains (supply amount per unit time) supplied to a sorting section. In the case where the harvesting of the crop is stopped during the circulation of the combine and the supply amount of the kernel supplied to the sorting unit is reduced, unnecessary materials such as straws easily leak through the sorting net together with the kernel. It is known that sorting accuracy deteriorates.

[0003]

In order to avoid such a problem, the presence or absence of a cereal culm conveyed from the pre-processing unit to the automatic threshing apparatus is detected by cereal culm detection means, and the cereal culm detection means detects whether the cereal culm is not present. When the presence is detected, it is conceivable to reduce the leaking ability of the grain in the sorting section and prevent unnecessary substances such as straw from leaking together with the grain from the sorting net. However, in this case, for example, when the pre-processing drive is stopped while the cereal stalk is held in the pre-processing unit, or when the cereal stalk detection means is caught by the stalk, the cereal stalk is supplied to the automatic threshing device. The culm detection means detects the cereal culm in spite of the fact that it has not been removed, and as a result, the leakage capacity of the sorting unit does not decrease. However, there was a problem that it became worse.

[0004] Therefore, an object of the present invention is to prevent the grain sorting system from being significantly deteriorated when the combine is circulated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a grain leakage amount control for controlling the amount of grain leakage in a sorting section of an automatic threshing apparatus (1). In the combine including the means (40), a grain stalk detection means (73) for detecting the presence or absence of a grain culm conveyed from the preprocessing unit to the automatic threshing apparatus (1), and an operating state of the preprocessing unit. A pre-processing rotation detecting means (75), wherein the cereal stalk detecting means (73) detects the absence of cereal stalks in the pre-processing unit,
Alternatively, the pre-processing rotation detecting means (75) detects the stop of the operation of the pre-processing unit, or the opening degree of the grain leakage control means (40) is set to a predetermined position on the basis of either of them. Cereal stalk detection means (73)
Rotation detection means (7)
5) If the operation stop of the pretreatment unit is detected, the kernel leakage
It is characterized in that the opening of the quantity control means (40) is closed .

[0006]

Based on the above configuration, in the combine, for example, when the supply of cereal stalks from the pre-processing unit to the automatic threshing apparatus (1) is stopped at the time of circulating, the cereal stalk detection means (73) uses the cereals of the pre-processing unit. The control means (77) having received the signal detects whether there is no culm or the pre-processing rotation detecting means (75) detects the stop of the operation of the pre-processing section, and then the control means (77) receives the signal. The opening degree of the quantity control means (40) is closed to a predetermined position, and the amount of kernel grains leaking in the sorting section of the automatic threshing apparatus (1) is suppressed.

[0007]

As described below, according to the present invention, the supply of cereal culm from the pre-processing unit to the automatic threshing apparatus is stopped based on the cereal culm detecting means (73) and the pre-processing rotation detecting means (75). By detecting, as in the case of detecting based on only the cereal stalk detecting means (73), the cereal stalk detecting means detects the cereal stalk regardless of the state where the cereal stalk is not supplied to the automatic threshing device, As a result, since the leaking capacity of the sorting unit does not decrease, there is no problem that unnecessary materials such as straw are leaked together with the grains from the sorting net, and good sorting can be performed. Also, the pre-processing by the pre-processing rotation detecting means (75)
If the detection is made only by the activation / deactivation of the
In the moving state, the transported grain culm is lost and
Unnecessary materials such as straws leaked along with the grains from
However, the present invention has such a problem.
Can also be prevented.

The reference numerals in parentheses are for comparison with the drawings, but do not limit the configuration of the present invention.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

First, an automatic threshing apparatus 1 for a self-removing combine
Will be described with reference to FIG.

An automatic threshing apparatus 1 for a self-release type combine is the first type.
And second handling cylinders 2 and 3, both of which are rotatably supported around a rotation axis along the feeding direction of the grain stalk (the right direction in FIG. 1). These two handle cylinders 2 and 3 have teeth on their outer peripheral surfaces, and at a predetermined distance from the outer peripheral surface, receiving nets 5 and 6 cover substantially lower portions of the handle cylinders 2 and 3. Are arranged respectively. Also,
A feed chain 7 is provided in the vicinity of the first handling cylinder 2 along the rotation axis direction, and the feed chain 7 is provided such that one end thereof is close to one end of a stock transport chain (not shown). The other end is provided so as to be close to one end of the straw chain 8.

On the other hand, an oscillating grain plate 20 is provided below the first handling cylinder 2, and a strok rack 22, a chaff sheave 23, etc. are provided below and downstream of the second handling cylinder 3. Are arranged. The oscillating flow grain plate 20 and the chaff sheave 23 are configured to be oscillated by a drive source (not shown), and the chaff sheave 23 has a net-like shape so as to leak grains. In addition, below the oscillating flow grain plate 20,
Karami fan 30 rotationally driven by a drive source (not shown)
A suction fan 55, which is also driven to rotate, is disposed above the straw rack 22, and a dust discharge fan 54 is disposed below the straw rack 22. These fans 30, 54, and 55 are provided with a karami fan 3 to discharge unnecessary substances lighter than grains to the outside of the automatic threshing apparatus 1.
A wind is generated in the direction from 0 to the suction fan 55 and the exhaust fan 54.

On the other hand, a first spiral 32 is arranged below the chaff sheave 23, and the first spiral 32 is linked to a fried spiral 31. These spirals 31
It is a shaft-shaped one having helical teeth that are rotationally driven by a drive source (not shown), and transports kernels leaking from the chaff sheave 23 and the like to a Glen tank (not shown). Also,
On the right side of the first spiral 32, a second spiral 35 is disposed in parallel with the spiral 32, and the second spiral 35 is linked with a vertical feed spiral 36 communicating with the second handling cylinder 3 portion. ing.

Next, the structure of a combine sorting control device according to the present invention will be described.

The grain leakage amount control means 40 has a swing sheave 41 and a closing plate 42. The swing sheave 41 controls the amount of grain leaking from the second handling cylinder 3 portion. Further, the closing plate 42 closes the upper surface of the chaff sheave 23 by a predetermined amount, and controls the amount of the kernel conveyed from the oscillating flow grain plate 20 and the amount of the kernel flowing down from the swing sheave 41.

Among them, the swing sheave 41 is a louver provided with a large number of rotatable fins whose upper edges are pivotally supported, and is opened and closed by a motor and a link mechanism (not shown). One end of a wire 47 whose rear end is connected to a potentiometer 44 (hereinafter referred to as a fin potentiometer) is attached to the lower end of one fin of the swing sheave 41.

On the other hand, the closing plate 42 is placed on the upper surface of the chief sheave 23 and has a shape covering the chief sheave 23 when fully closed. The closing plate 42 is closed by the rack 50 attached to the one end edge thereof via the bracket and moved above the chaff sheave 23 and in parallel with the sheave 23 to thereby close the chaff sheave 23 (opening degree).
Is adjusted. Similarly to the fin, the rack 50 has a wire 47 whose rear end is connected to a potentiometer 45 (hereinafter, referred to as a closing potentiometer).
One end is attached.

Above the oscillating flow plate 20, a float sensor 51 whose center is rotatably supported by the whole apparatus.
Are arranged. A roller 51a is rotatably supported at one end of the float sensor 51, and another potentiometer 52 is linked to the other end. The roller 5
1a rolls on the upper surface of the supplied grain layer, and the roller 51a moves up and down according to the amount of the grain (layer thickness of the loaded grain), and the potentiometer 52 detects the amount of the grain. .

As shown in detail in FIG.
The control unit 77a performs control according to the traveling speed of the combine (hereinafter, referred to as the body speed), and the control unit 77b performs control when the combine circulates. In particular,
ON by automatic switch 71 and work equipment switch 72
-Turned off, the grain stalk sensor (grain stalk detecting means) 73, the pre-processing rotation sensor (pre-processing rotation detecting means) 7
5. Signals from the potentiometers 44, 45 and 52 are input. Then, the fin angle adjusting motor 76 and the closing plate adjusting motor 4
6 is drive-controlled. The grain culm sensor 73 is a sensor that detects the presence or absence of a grain culm transported from the preprocessing unit to the automatic threshing device,
It is provided in the preprocessing unit.

Further, the control means 77 stores a target value of the fin potentiometer 44 and a target value of the plugging potentiometer 45 in accordance with the vehicle speed. The target value increases in a stepwise manner as the body speed increases, as shown in FIGS. 3 (a) and 3 (b). Specifically, when the aircraft speed is detected by the preprocessing rotation sensor 75 increases as the V1, V2, V3, F from the target value F0 of the fin potentiometer 44
1, F2, and F3, and the plugging potential 45
Increases from M0 to M1, M2, M3.

Next, the operation of the above embodiment will be described.

A preprocessing unit (not shown) on the left side of FIG.
The crops harvested at the above are first transported to the entrance of the automatic threshing apparatus 1 by a stock transport chain. Thereafter, the culm of the crop is sandwiched by the feed chain 7, and
It is conveyed rightward in FIG. 1 while being bitten by the handling cylinder 2. Thus, the ears are threshed, and the straw that has been threshed is transported to a post-processing device (not shown) by another straw chain 8.

The grains falling on the oscillating flow plate 20 under the threshing action in the first handling drum 2 move rightward in FIG. 1 on the oscillating flow plate 20 and leak from the opening of the chaff sheave 23. Drop down to the first spiral 32. Such grains are fed in the axial direction with the rotation of the first spiral 32, and then pushed up along the axis with the rotation of the fried spiral 31. By such transport, the grains are stored in a Glen tank (not shown).

At this time, the strora rack 22 swings by a driving device (not shown), and the tangling fan 30 and the suction fan 55 generate wind in a certain direction as described above. , Sort straw. Unnecessary straw and the like are discharged from the automatic threshing apparatus 1 by the suction fan 55.

On the other hand, ears and the like that have not been completely threshed by the first handling cylinder 2 do not leak from the receiving mesh 5 and move on the catching net 5 as the first handling cylinder 2 rotates. Then, it is sent to the second handling cylinder 3. Then, these ears and the like are processed again by the second handling cylinder 3, and the processed grain leaks through the swing sheave 41 and the chaff sheave 23 and the first spiral 3
2 and stored in the Glen tank as before. Ears that have not been processed are returned to the second handling cylinder 3 again by the second spiral 35 and the vertical feed spiral 36.

Next, the operation of the opening control section 77a based on the vehicle speed will be described with reference to FIG.

First, the operator sets a dial according to the type of crop to be cut (S1). A fixed voltage (for example, 5) is applied to the potentiometer 52 of the float sensor 51.
V) is applied and the output voltage should be greater than 0V and less than the constant voltage. Therefore, when the output voltage of the potentiometer 52 (hereinafter referred to as the float sensor value) indicates the voltage during this period, it is determined that the voltage is normal (S2).

As described above, when the potentiometer 52 is determined to be normal, it is determined whether or not the float sensor value (H) is equal to or more than the threshold value H1 (S3). The flag is 0, and the fin position of the swing sheave 41 is controlled to F1, F2, F3 according to the traveling speeds V1, V2, V3 of the body (S4), and the closing positions of the closing plate 42 are set to M1, M2. , M3 (S
6, S7, S8). Such control is also performed for a certain period of time (determined by the timer T3) after it is determined that the harvesting of the crop has progressed and the float sensor value has exceeded the threshold value H1 (S5). Here, the threshold value H1 of the float sensor changes according to the dial setting. This is because the optimal amount of grains for sorting accuracy varies depending on the type of crop.

After the float sensor value H exceeds the threshold value H1 for a predetermined time, the timer T3 stops counting (S10), and the rank-up flag is set to "1".
(S11), the opening of the fins and the closing plate is controlled to be slightly open. That is, the traveling speed V1,
According to V2 and V3, the fin position is ranked up and F
2, F3, F4, and the closing position is M
2, M3, M4 (S7, S8,
S9). This control is also held for a certain period of time by the timer T4, during which no rank-up is performed (S12).

On the other hand, the potentiometer 52 of the float sensor 51 is out of the predetermined range due to a short circuit or the like (for example, 0).
When the voltage V) is output (S2), the fin position and the plugging position are both raised by one step to the open side (S13). An alarm is also issued (S14).

The pre-processing rotation sensor 75 detects the rotation speed of the gear of the pre-processing section in a non-contact manner and outputs a signal.
The control means 77 reads the signal as the vehicle speed and determines the target values of the fin potentiometer 44 and the plugging potentiometer 45. Since the actual fin opening degree and the opening degree of the closing plate are obtained by the signals from the fin potentiometer 44 and the closing potentiometer 45, the control means 77 controls the respective signals so that the signals from the potentiometers 44 and 45 coincide with the target values. The drive of the motors 46 and 76 is controlled.

Next, the operation of the combine traveling control unit 77b will be described with reference to FIG.

In order to perform the harvesting operation, the operator sets the control position in accordance with the type of crop, sets the setting dial to a desired mode (S20), and operates the control means to control the amount of grain leakage. The automatic switch 71 is turned on (S21), the work machine clutch 72 is turned on, and power is transmitted to the work machine (S22). In such a case, the grain culm sensor 73 is turned ON (S23), and when the pre-processing rotation sensor 75 detects that the gear of the pre-processing unit is rotating (S2).
4), the timer of the control means 77 does not operate, and control according to the normal machine speed is performed as described above (S26, S2).
7). And at the time of so-called recirculation, where mowing is unnecessary,
When the supply of the grain stalk from the pre-processing unit to the automatic threshing apparatus 1 is stopped, the grain stalk sensor 73 or the pre-processing rotation sensor 75 detects this, that is, the grain stalk sensor 73 detects the grain stalk of the pre-processing unit. Detecting the absence or the pre-processing rotation sensor 75
Detects that the rotation of the gear of the preprocessing unit has stopped or issues a signal (S23, S24), the control unit 7
The timer 1 in 7 starts (S25). However, the normal fin control (S26) and the closing control (S2) are performed until a predetermined time (4 to 5 seconds) elapses with the timer 1.
7) is continuously performed. However, when a predetermined time (4 to 5 seconds) elapses in the timer 1 (S28, S2
9) Both the fin and the closing plate move to the closed position (S30), and another timer 2 starts counting (S31). Then, the fin and the closing plate are both kept in the closed position for a predetermined time (4 to 5 seconds) counted by the timer 2, and after the counting by the timer 2 is completed (S32), the normal fin control and the closing control are performed again. Is performed (S26, S27).

The timing at which the opening of the grain leakage control means 40 is closed at a predetermined position due to the temporary stop of crop harvesting is determined by the grain culm sensor 73 and the preprocessing rotation sensor 75. Is not the same as when the signal is input to the control means 60, but after a certain time has elapsed. Therefore, during a certain period of time when the amount of kernels in the sorting unit hardly changes even if the harvesting is stopped, the kernels are discharged normally outside the machine because the kernels are sorted as usual. Can be avoided.

Further, the closing of the grain leakage control means 40 is limited to a certain time, and the sorting operation is not stopped for a long time. Therefore, although unnecessary materials such as relatively light straw are discharged outside the machine, there is an effect that there is almost no discharge of the grain and there is almost no damage due to the second reduction of the grain.

In the above-described embodiment, the target values of the fin potentiometer and the obstruction plate potentiometer are changed in three steps in accordance with the body speed. However, the present invention is not limited to this. You may.

In the above embodiment, the swing sheave 41 and the blocking plate 4 are used as the grain leakage control means 40.
2, but either one may be used.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a combine sorting control device according to the present invention.

FIG. 2 is an explanatory diagram of a control unit 77.

FIG. 3A is a diagram illustrating a relationship between a target value of a fin opening degree and a body speed, and FIG. 3B is a diagram illustrating a relationship between a target value of an opening degree of a blocking plate and the body speed.

FIG. 4 is an operation explanatory diagram in a case where the fin opening and the opening of the blocking plate are controlled in accordance with the vehicle speed.

FIG. 5 is an operation explanatory diagram of the control means 77 according to the present invention when the combine circulates.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic threshing device 2 1st handling cylinder 3 2nd handling cylinder 7 Feed chain 20 Oscillating flow grain board 22 Strok rack 23 Chaff sheave 40 Grain leak amount control means 41 Swing sheave 42 Blocking board 44 Potentiometer (fin potentio) 45 Potentiometer (blocking potentiometer) 51 Float sensor 73 Grain stalk detecting means (Grain stalk sensor) 75 Pre-processing rotation detecting means (Pre-processing rotation sensor) 77 Control means 77b Combine circulating control section

Claims (1)

(57) [Claims] 1. A combine comprising a grain leakage control means for controlling a grain leakage amount in a sorting unit of an automatic threshing apparatus, wherein a presence or absence of a grain culm conveyed from a pretreatment unit to the automatic threshing apparatus is provided. And a pre-processing rotation detecting means for detecting an operation state of the pre-processing unit, wherein the cereal stalk detecting means detects the absence of a cereal stalk in the pre-processing unit, or a pre-processing rotation. or detection means detects the operation stop of the pre-processing unit, based on the fact that either has been made, it so as to close the opening of the grain Moshita amount control means to a predetermined opening degree
Even if the cereal stalk detection means is in the cereal stalk presence detection state,
The preprocessing rotation detection means detects that the preprocessing unit has stopped operating.
For example, a combine sorting control device is configured to close an opening of the grain leakage control means .