JP3330475B2 - Sorting control device in harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting control device for a harvester, and more particularly to a method for controlling the amount of grains falling from a sorting net according to the amount of grains moving on an oscillating grain board. The present invention relates to a sorting control device in a harvester.

[0002]

2. Description of the Related Art Recently, in harvesters such as combine harvesters,
A signal from a position detection sensor provided on an oscillating flow plate below the first handling cylinder or an oscillating fin member is input to adjust the amount of leakage of kernels, thereby improving the accuracy of sorting kernels. There has been proposed a device provided with a sorting device for keeping the temperature. This sorting device
A closing plate movably disposed with respect to the sorting net from which the threshed grains leak, a swinging fin member having a number of fins and disposed in parallel with the closing plate, and It has a means that can control the amount of grain leakage by opening and closing.

[0003] Such a sorting apparatus includes a layer thickness detecting sensor for detecting the layer thickness of the grain moving on the oscillating flow grain plate, a position detecting sensor for detecting the open / close position of the oscillating fin member, and the like. The signals from these position detection sensors are compared with a reference value to which a target grain layer thickness is set, and the swing fin member and the like are opened and closed so that the signal and the reference value match. I do.

[0004]

However, conventionally, the standard value of the grain layer thickness to be targeted is fixed,
In the case where the layer thickness is greatly increased, for example, the swinging fin members and the like are rapidly fully opened, so that the grains fall almost without being sorted, and a good sorting can be performed. There was a problem that could not be done.

[0005] In addition, since the reference value of the target grain layer thickness is fixed regardless of the type of crops such as rice and wheat to be cut, for example, when this reference value is adjusted to rice, wheat is reduced. When threshing, the oscillating fin members and the like may be too open, or conversely, when threshing rice, the oscillating fin members and the like may be insufficiently opened when threshing rice.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a target grain layer thickness standard as the fin opening of a swinging fin member increases. An object of the present invention is to provide a sorting control device in a harvester in which the value is increased to improve the sorting.

[0007]

In order to achieve the above object, the invention according to claim 1 comprises a bed of grains moving on an oscillating flow board (20) below a first handling cylinder (2). A layer thickness detecting means (51) for detecting the thickness, a rocking fin member (41) disposed above the sorting net (23) and provided with a large number of fins (41a) substantially in parallel with each other; A fin opening adjusting means (76) for opening and closing the fin member (41) ;
The layer thickness detected by the detecting means (51) is equal to the fin (4).
Reference values (d ₁ , d ₂ , d ) for increasing the opening (P) of 1a)
₃ ), the opening of the fin (41a) is increased.
(P) is opened and the opening degree (P) of the fin (41a) is opened.
Falls below the reference value (d ₁ ′, d ₂ ′, d ₃ ′)
Thereby closing the opening (P) of the fin (41a).
A harvester (1) comprising control means (77).
The degree of opening of the fin (41a).
The reference values (d ₁ , d ₂ , d ₃ ) for increasing (P ) and
The decreasing reference values (d ₁ ′, d ₂ ′, d ₃ ′) are set so as to increase as the opening (P) of the fin (41a) increases.

[0008] The invention according to claim 2 is an invention according to claim 1.
The sorting control device in the harvester (1), wherein the fins
The reference values (d ₁ , d ₂ ,
d ₃ ) and the decreasing reference values (d ₁ ′, d ₂ ′,
d ₃ ′) can be switched in accordance with the type of crop to be harvested .

(Operation) In the above configuration, according to the first aspect of the invention, for example,
If the detected layer thickness indicates the opening (P) of the fin (41a),
By exceeding the increasing reference values (d ₁ , d ₂ , d ₃ )
Control means for opening the opening (P) of the fin (41a)
(77), wherein the reference values (d ₁ , d ₂ ,
d ₃ ), the opening degree (P) of the fin (41a) is large.
So that the grain thickness is large
Fin (41a)
(P) will open gradually without opening all at once
As a result, the sorting accuracy is improved.

[0010]

[0011]

Note that the reference numerals in parentheses described above are for the purpose of comparing the drawings, and do not limit the invention-specifying matters of the present invention.

[0013]

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

First, an automatic threshing apparatus 1 for a self-releasing type combine
Will be described with reference to FIGS. 1 and 2.

The automatic threshing apparatus 1 of a self-removing type combine includes a first handling cylinder 2 and a second handling cylinder 3.
Numerals 3 are each supported rotatably around a rotation axis along the feeding direction of the grain stalk. These two cylinders 2,3
Has teeth on its outer peripheral surface, and receiving nets 5 and 6 are provided at locations away from the outer peripheral surface by a predetermined distance so as to cover substantially lower portions of the handling cylinders 2 and 3, respectively. . In addition, a feed chain 7 is provided in the vicinity of the first handling cylinder 2 along the direction of the rotation axis thereof.
One end is provided near one end of a stock transport chain (not shown), and the other end is provided near one end of the chain 8.

Below the first handling cylinder 2, there is an oscillating flow plate 2
A straw rack 22 and a chaff sheave 23 as a sorting net are provided below and downstream of the second handling cylinder 3. The oscillating flow grain plate 20, the straw rack 22, and the chaff sheave 23 are configured to be oscillated by a drive source (not shown), and the chaff sheave 23 has a net shape so as to leak grains. Also,
Below the oscillating grain plate 20, a Karino fan 30 that is rotationally driven by a drive source (not shown) is arranged, and above the strok rack 22, a suction fan 55 that is also rotationally driven is arranged. Further, a dust exhaust fan 54 is disposed below the straw rack 22.

The fans 30, 54 and 55 generate wind from the Karino fan 30 toward the suction fan 55 and the dust discharge fan 54 in order to discharge unnecessary substances lighter than the grains to the outside of the machine.

A first spiral 32 is disposed below the chaff sheave 23, and a first spiral 31 is linked to the first spiral 32. These spirals 31,3
Numeral 2 denotes a shaft having helical teeth rotationally driven by a drive source (not shown), and transports the kernels leaking from the chaff sheave 23 and the like to a Glen tank (not shown). On the right side of the first spiral 32, a second spiral 35 is disposed substantially in parallel with the spiral 32.
A vertical feed spiral 36 communicating with the second handling drum 3 side is linked to the second spiral 35.

Next, the sorting control device will be described.

The sorting control device is arranged such that the grains that are threshed by the rotation of the second handling cylinder 3 are supplied to the chaff sheave 23.
Is controlled to control the amount of water leaking toward the first spiral 32.

In the present invention, a layer thickness detecting means for detecting the layer thickness of the grain moving on the oscillating flow grain plate 20 below the first handling cylinder 2.
And 51, a number is disposed above the sorting network 23 fin 41
a swinging fin member 41 provided substantially in parallel, and fin opening degree adjusting means 7 for driving the swinging fin member 41 to open and close.
6 and the layer thickness detected by the layer thickness detecting means 51 is a fin.
Exceeding the reference values d ₁ , d ₂ , d ₃ for increasing the opening P of 41a
The opening of the fin 41a is opened by
Reference values d ₁ ′, d ₂ ′, which decrease the opening degree P of 41 a ,
By closing d ₃ ′, the opening P of the fin 41a is closed.
Control means 77.

That is, as shown in FIG. 2, a potentiometer 52 and a contact 5
3 as a layer thickness detecting means comprising
Is arranged. Thereby, the potentiometer 52
Detects the swinging position of the contact 53, and thereby detects the layer thickness of the grain moving on the swinging flow board 20.

A swing sheave 41 as a swing fin member is swingably disposed above the chaff sheave 23, and has a large number of fins 41a substantially parallel to each other. As shown in FIGS. 3 and 4, each fin 41a of the swing sheave 41 is pivotally mounted on upper and lower plates 42, 43, and the arm 25 is attached to any one of the fins 41a. A link mechanism is formed in which the other end of an arm 26 having one end pivotally mounted is connected to the other end by a pin 27.

The swing sheave 41 is driven to open and close by a fin opening adjusting motor 76 as fin opening adjusting means connected to the link mechanism via wires 47 and 48. The fin opening adjustment motor 76 is provided with a potentiometer 44 (hereinafter referred to as fin potentiometer) which rotates integrally therewith. Furthermore,
The microcomputer 77 as a control means is described later.
As described above, the reference values d and d 'of the layer thickness with respect to the opening degree P of the fin 41a are set in advance.

In addition to the above, the selection control device includes a closing plate 37 movably disposed with respect to the chaff sheave 23, a closing plate adjusting motor 46 for controlling the movement of the closing plate 37, and But this blocking plate 3
Reference numeral 7 denotes an opening and closing control together with the fins 41a of the swing sheave 41, and a description thereof will be omitted.

In the microcomputer 77, the detection value of the grain thickness detected by the float sensor 51 exceeds the reference value d for increasing the opening P of the fin 41a.
As a result, the opening degree P of the fin 41a is increased,
When the opening value P of the fin 41a falls below the reference value d 'for decreasing the opening degree P,
Thus, the opening degree P of the fin 41a is controlled to be closed .

As shown in FIG. 5, a selection automatic switch 71 and a rice / wheat changeover switch 72 are connected to the microcomputer 77.
When 1 is turned on, kernel sorting is automatically performed according to the control of the microcomputer 77. In addition, the rice
The wheat switch 72 changes the reference value of the layer thickness with respect to the degree of opening of the fin 41a according to the type of crop. For example, turning on the switch 72 selects rice, and turning it off selects wheat. You.

Further, the microcomputer 77 includes:
When the float sensor 51 and the fin potentiometer 44 are connected and the layer thickness value of the grain detected by the float sensor 51 is input, the microcomputer 7
7 are compared with the reference values d 1 , d ′ of the layer thickness stored in the memory 7, and based on whether the values exceed or fall below the reference values d 1 , d ′ , the fins 41 are controlled via the fin opening adjustment motor 76.
The opening of a is adjusted. And the fin 41 at this time
The opening degree of “a” is detected by the fin potentiometer 44.

Here, in the present embodiment , the fins
Reference values d ₁ , d ₂ , d ₃ for increasing the opening degree of 41a and decreasing
The smaller reference values d ₁ ′, d ₂ ′, d ₃ ′ are
It is characterized in that it is set so as to increase as the opening degree increases.

[0030] That is, FIG. 6 shows the relationship between the fin angle and the thickness of the case of selecting rice, fins 4
Layer when increasing the opening degrees P ₀ , P ₁ , P ₂ , and P ₃ of 1a
The reference values d ₁ , d ₂ , and d ₃ of the thickness increase stepwise as the degrees of opening P ₀ , P ₁ , P ₂ , and P ₃ of the fin 41a increase. Specifically, increasing the grain layer reference value of the thickness when the fin angle, for example, P ₀ detected by the fin potentiometer 44 is d _1, also the fin opening to P ₁ stepwise The reference value of the layer thickness is d ₂
Next, further, the reference value of the layer thickness when the fin opening is increased to P ₂ are gradually increased and d _3.

Thus, when the fin opening is large, the reference value is also increased accordingly, so that, for example, even when the grain thickness is greatly increased, the fin opening is not fully opened at once, and It opens gradually in the shape.

Note that d ₁ ′ ,, at the reference value of the layer thickness,
d ₂ ′ and d ₃ ′ decrease when the opening P of the fin 41 a decreases from a large position , ie, when the opening P of the fin 41 a decreases.
₀ , P ₁ , P ₂ , and P ₃ indicate the reference value of the layer thickness when decreasing , and the reference values d ₁ ′, d ₂ ′, and d at this time are shown.
₃ ′ is smaller than the reference value when the opening degree P of the fin 41a is increased .
By providing a dead zone relating to opening and closing , even when the thickness of the detection layer is reduced, it is possible to prevent a sudden change in the opening. Then, the opening degrees P ₀ , P ₁ , P ₂ , P of the fins 41 a are obtained.
₃ , the reference values d ₁ ′, d ₂ ′,
d ₃ ′ is also the degree of opening P ₀ , P ₁ , P ₂ , P _{3 of} the fin 41a.
It is getting bigger with the increase. That is, the fin 4
When decreasing the opening P of 1a, the fin opening is
For example, the reference value of the layer thickness at P ₀ is d ₁ ′.
The reference value of the layer thickness when the pin opening increases to P ₁ is d ₂ ′
Next, further, the layer thickness when the fin opening is increased to P ₂
Is gradually increased to d ₃ ′.

Next, FIG. 7 shows the relationship between the fin opening and the layer thickness when rice and wheat are selected. As is apparent from FIG. 7, the case of wheat is better than that of rice. than,
Reference value of layer thickness when increasing for the same fin opening
d ₄ , d ₅ , d ₆ and the reference value d of the layer thickness when decreasing
_{4 ', d 5', d} 6 ' is increased. This is because the optimal amount of kernels differs depending on the type of crop to be cut in terms of sorting accuracy.

Thus, for example, in the case of wheat, poor sorting due to the mixing of wheat stalks or the like does not occur, and in the case of rice, the problem of an increase in the third loss due to insufficient opening is eliminated, which eliminates the problem of cutting materials. Control becomes possible.

FIGS. 8 and 9 show a control flowchart in this embodiment, which will be described below.

First, when performing automatic sorting control, the operator turns on the sorting automatic switch 71 (S
1) The microcomputer 77 determines whether or not the opening of the fin 41a has changed (S2). If Yes, the microcomputer 77 starts counting time using a timer (S3). This is because the opening position of the fin 41a is maintained for a certain time. In step S4, it is determined whether or not the time measurement by the timer has been completed.
A wheat is selected (S5). Here, if wheat is selected, the process proceeds to step S15 in FIG. 9, and if rice is selected, the process proceeds to step S6 to perform sorting control according to the current fin opening.

That is, if the current fin opening is P ₀ (fully closed), it is determined in step S7 whether or not the detected layer thickness at that time is larger than a preset reference value d ₁ . Then, larger than the reference value d _1, the fin opening and P ₁ (S8), and as the opening to be large.

Further, if the current fin opening P _1, in step S9, it is determined whether the detection layer thickness at that time is larger than the reference value d ₂ that is set in advance. And
Is larger than the reference value d _2, open the fin opening P ₂
And then (S8), is smaller than the reference value d _2, the reference value d
₁ '(S10). In this step S10,
If the detection layer thickness is smaller than the reference value d ₁ ′, the fin opening is closed and set to P ₀ (S13), and if it is larger than the reference value d ₁ ′, it is left as it is.

[0039] Furthermore, the current fin opening if P _2, in step S11, it is determined whether the detection layer thickness at that time is larger than the reference value d ₃ which is set in advance. Then, larger than the reference value d _3, and P ₃ to open the fin opening (S8), is smaller than the reference value d _3, is compared with the reference value d ₂ '(S12). In step S12, 'is smaller than, and P ₁ is closed fins opening (S13), the reference value d _2' detection layer thickness reference value d ₂ and it is greater than.

Furthermore, if the current fin opening is P ₃ (fully open), it is determined in step S14 whether the detection layer thickness at that time is larger than a preset reference value d ₃ ′. Then, 'and it is larger than the reference value d _3' reference value d ₃ is smaller than, and P ₂ is closed fins opening (S13).

On the other hand, if rice is selected in step S5, the process proceeds to step S15 in FIG. 9, where sorting control is performed according to the current fin opening.

Since the sorting control at this time is exactly the same as that of the above-described wheat, the details are omitted.
For example, the current of the fin opening proceeds to step S16 if P ₀ (fully closed), also current fin opening proceeds to step S18 if P _1, further current fin opening to step S20 if P ₂ If the current fin opening is P ₃ (fully open), the process proceeds to step S23.

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

The crop cut in the pre-processing unit (cutting unit) of the combine is 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 the ears are
It is transported in a state of being bitten. The ears are threshed in this way, and the straw that has been threshed is replaced with another straw straw chain 8.
Is transported toward the post-processing section.

The grain that has been threshed by the first handling cylinder 2 and has fallen on the oscillating flow plate 20 moves to the right on the oscillating flow plate 20. The layer thickness d of the moving grain is detected by the float sensor 51, and the moving grain leaks from the swing sheave 41 and the chaff sheave 23 and falls toward the first spiral 32.

In this case, the microcomputer 77 stores the opening degree P of the fin 41a in the swing sheave 41.
Reference values d ₁ , d of the grain layer thickness for ₀ , P ₁ ,.
_2, ... is set in advance, when the detection value d of the layer thickness due to the will or under exceed this reference value, the opening P ₀ of the fins 41a, P _1, ... are gradually and automatically Opening / closing is controlled so that the layer thickness becomes substantially constant.

Moreover, the reference values d ₁ , d ₂ ,.
Are set so as to increase as the degrees of opening P ₀ , P ₁ ,... Of the fins 41a increase in a stepwise manner. And the sorting accuracy is improved.

Thus, the grains leaked from the swing sheave 41 and the chaff sheave 23 are sent in the axial direction with the rotation of the first spiral 32, and then along the axis with the rotation of the fried spiral 31. Pushed up. By such transport, the grains are stored in the Glen tank.

At this time, the strora rack 22 makes an oscillating motion by a driving device (not shown), and the Karino fan 30 and the suction fan 55 generate wind in a certain direction, so that grains, debris and straw are reliably selected. . 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 even by the first handling cylinder 2 do not leak from the receiving mesh 5, so that the spikes on the receiving mesh 5 with the rotation of the first handling cylinder 2 do not leak. Move
It is sent to the second handling cylinder 3. Then, these unthreshed ears and the like are processed again by the second handling cylinder 3, and the processed kernels leak down the swing sheave 41 and the chaff sheave 23 and fall into the first spiral 32, and are stored in the Glen tank in the same manner as described above. Will be stored.

[0051]

According to the present invention, as described above ,
The reference value for increasing the opening and the reference value for decreasing the opening are set in the filter.
Is set to be larger as the opening of the
Even when the layer thickness of the grain is greatly increased , the fins are controlled to be gradually opened step by step without being fully opened at a time, thereby improving the sorting accuracy.

Further, the reference value for increasing the fin opening degree
Since the reference value to be reduced and the reference value to be reduced can be switched in accordance with the type of crop to be reaped, it is possible to perform control suitable for the type of crop without occurrence of poor sorting.

[Brief description of the drawings]

FIG. 1 is an external view showing a combine sorting control device to which the present invention is applied.

FIG. 2 is a schematic cross-sectional side view of FIG.

FIG. 3 is a schematic plan view of a swing sheave and the like.

FIG. 4 is a schematic side view of a swing sheave and fin opening degree adjusting means.

FIG. 5 is a diagram showing a control unit and various detection units connected thereto.

FIG. 6 is a diagram showing the relationship between the fin opening and the grain layer thickness.

FIG. 7 is a diagram showing the relationship between the fin opening degree and the grain layer thickness according to the type of crop.

FIG. 8 is a diagram showing a control flowchart in the present embodiment.

FIG. 9 is a diagram showing a control flowchart in the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic threshing apparatus 2 1st handling cylinder 3 2nd handling cylinder 5, 6 Receiving net 20 Oscillating flow board 23 Chaff sheave 41 Swing sheave 41a Fin 44 Fin potentiometer 51 Float sensor 52 Potentiometer 53 Contact 76 Fin opening adjustment motor 77 Microcomputer

Continuation of the front page (56) References JP-A-5-328833 (JP, A) JP-A-6-30649 (JP, A) JP-A-7-59453 (JP, A) JP-A-4-222513 (JP) JP-A-1-281008 (JP, A) JP-A-5-304819 (JP, A) JP-A-6-153675 (JP, A) JP-A-4-100338 (JP, U) JP-A 5-23834 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 12/32

Claims (2)

(57) [Claims] 1. A layer thickness detecting means for detecting a layer thickness of a grain moving on an oscillating flow grain plate below a first handling cylinder, and a plurality of fins disposed at an upper portion of a sorting net are substantially parallel to each other. Swing fin member, fin opening adjusting means for driving the swing fin member to open and close, and a layer thickness detected by the layer thickness detecting means.
Exceeds the reference value for increasing the fin opening.
Open the fin and reduce the fin opening.
The fin opening is closed by falling below the reference value
Control in a harvester comprising:
In the apparatus, the reference value for increasing the opening degree of the fin and the reference value for decreasing the opening degree are set so as to increase as the opening degree of the fin increases. 2. The reference value for increasing the degree of opening of the fin.
The sorting control device in the harvester according to claim 1, wherein the reference value to be decreased and the reference value to be decreased can be switched according to the type of crop to be harvested.