JP2000245245A - Separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the inconvenience of decrease of separation accuracy and increase of scattered particles at the time of treatment of seeds in a selecting device automatically controlling the opening of a filtering and selecting part so that the detected value of a sensor for detecting an amount of a material to be selected and treated may keep a prescribed standard value. SOLUTION: When detecting the amount of materials to be separated and treated at a threshing and separation part, and determining a target opening of a chaff sieve 38 so that the detected value by a sensor for detecting the amount of a material to be separated and treated may be kept at a prescribed standard value, the materials to be separated and a treated is classified into a seed or not, and when the material is classified as the seed, the standard vale is changed to the standard value for treating the seed which is set to the value smaller than the standard value for treating grains.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a sorting device for automatically controlling the opening of a filtering and sorting unit.

[0002]

2. Description of the Related Art In general, in a sorting device provided in a combine or the like, a selected material to be sorted is sequentially shed from stems and stems that are sequentially supplied, and the degranulated material to be sorted is roughly sorted by a filtering and sorting unit, and then filtered. The sorted materials leaked from the sorting unit are carefully selected by the Karin fan's sorting wind, but if the opening degree of the filtering sorting unit is constant, the sorting accuracy varies with the increase and decrease of the sorted materials. Not so much, so-called overflow may occur and the scattered particles may increase.In recent years, a sensor for detecting the amount of the sorted object to detect the amount of the sorted object is provided, and the detection value of the sensor is increased. There has been proposed an apparatus that automatically controls the opening degree of a filtration and sorting unit so as to maintain a predetermined reference value.

[0003]

By the way, in the above sorter, it is possible not only to sort grains such as rice and wheat but also to sort seeds. When the value is constant, there is a possibility that the sorting accuracy at the time of seed treatment is reduced or the scattering particles are increased.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve these problems in view of the above-mentioned circumstances. A sorting device that coarsely sorts the degranulated sorted material in the filtering and sorting unit, and carefully sorts the sorted material that has leaked from the filtering and sorting unit with the sorting wind of a Karamino fan. In providing an object to be sorted amount detection sensor for detecting the amount of the object to be sorted and automatic sorting control means for automatically controlling the opening of the filtration and sorting unit so that the detection value of the sensor maintains a predetermined reference value. The sorting automatic control means, a sorting processing object determining means for determining the type of sorting processing object, and a reference value of the sorting processing object amount detection sensor when it is determined that the sorting processing object is a seed; Set smaller than the processing reference value In which characterized in that a sensor reference value changing means for changing the child process reference value. In other words, while automatically controlling the opening degree of the filtration and sorting unit so that the detection value of the material to be sorted detection sensor keeps a predetermined reference value, the seed value is set to the reference value for seed processing at the time of seed processing determination. Therefore, it is possible to prevent inconvenience that sorting accuracy at the time of seed treatment is reduced and scattering particles are increased. Further, the selected processed object determining means automatically determines the seed processing based on the engine speed. In other words, paying attention to the fact that the engine speed is reduced during the seed processing, the seed processing is automatically determined based on the engine speed.
As compared with the case where the seed processing is determined by the switch switching operation, the operation labor can be reduced, and it is possible to avoid a decrease in sorting accuracy and an increase in flying particles due to forgetting to switch. Further, the selected processed material amount detection sensor is characterized in that the selected processed material amount is detected based on the wind pressure of the selected wind. In other words, in order to detect the amount of the sorted material based on the wind pressure of the sorting wind that changes according to the amount of the sorted material in the filtering and sorting unit, the layer thickness of the sorted material is detected by a contact sensor. The detection accuracy can be improved as compared with that of the above.

[0005]

Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a combine, and the combine 1 is a pre-processing unit 2 for cutting a stem and culm, sheds grain to be treated (grains and seeds) from a harvested stem, and sorts to-be-sorted. Threshing sorting unit 3, storage tank 4 for storing sorted grains or seeds, post-processing unit 5 for discharging threshed culms, operating unit 6 in which various operating tools are arranged, a pair of left and right Crawler traveling device 7a
, And the like, but all of these basic configurations are the same as in the past.

Reference numeral 8 denotes a transmission. The transmission 8 includes an engine 10 via a hydrostatic continuously variable transmission unit (HST) 9 functioning as a main transmission mechanism.
And the power is transmitted to the left and right crawler traveling devices 7 a via the auxiliary transmission mechanism 11 and the side clutch mechanism 12, and one side of the transmission 8 has a rotation speed of the intermediate transmission shaft 13. Combine based on 1
A vehicle speed sensor 14 for detecting the vehicle speed of the vehicle is provided.

[0007] The threshing and sorting section 3 divides the stalk culm into a handling room 15.
Threshing feed chain 16, which is pinched and conveyed along
A handling cylinder 17 for threshing the sorted material (grain or seed containing the mixture) from the transport stem, a receiving net 18 for leaking the degranulated sorted material, a handling room without leaking from the receiving net 18 A processing cylinder 19 for subjecting the sorted material to the end to a single grain treatment;
A second receiving net 20 from which the processing cylinder 19 leaks the sorted single-pieces to be processed; an oscillating flow plate 21 for sequentially oscillating and conveying the sorted products leaked from the receiving net 18; At the end of the flow plate 21, a filtering and sorting unit 22 that filters and sorts the sorted products, a Karamin fan 23 that sorts the sorted products that have leaked from the filtering and sorting unit 22 with the most sorting wind, and the selected grains. Alternatively, the first spiral 24 that horizontally transports the seed, the grain kernel 25 that lifts and transports the grains or seeds that have been transported to the end of the first spiral 24 to the storage tank 4, and does not leak from the filtering and sorting unit 22. 26. A stralac 26 for filtering and filtering the sorted material and the sorted material leaked from the second receiving net 20, and a second process for separating the sorted material leaked from the straw rack 26 by a second sorting wind. Sorting fan 27, second spiral 28 that horizontally transports the second sorted wind A second reduction cylinder 29 for reducing the sorted material conveyed to the end of the second spiral 28 into the sorting path, a dust discharge fan 30 for discharging straw and the like outside the machine at the end position of the straw rack 26 A culm feed chain 31 for nipping and conveying the culled waste culm to the rear of the machine body, a rotor (not shown) for dropping sleds from the conveyed stem of the culm feed chain 31, and the like. The oscillating flow plate 21, the filtration / separation unit 22, the stralac 26,
An integrated swing assembly A is configured, and is driven by a crank mechanism or a cam mechanism.

[0008] The filtering and sorting section 22 is configured by providing a chief sieve 32 as a first filtering and sorting body and a grain sieve 33 as a second filtering and sorting body in two upper and lower stages. On the other hand, the lower grain sheave 33 is formed of a wire mesh member having a predetermined mesh, while the lower grain sheave 33 is formed of a plurality of fins 34 arranged side by side at predetermined intervals in the front-rear direction. The upper support pin 34a projecting in the left-right direction is pivotally supported by the side plate of the swing assembly A, while the lower support pin 34b is connected in a series via a movable plate (not shown).
Therefore, each fin 3 having the upper support pin 34a as a fulcrum
The opening degree of the chaff sheave 32 can be changed based on the synchronous swing of No. 4.

Reference numeral 35 denotes a fin operating arm provided integrally with a predetermined upper support pin 34a. At the tip of the fin operating arm 35, a rotatable roller 35a is provided. The plurality of fins 34 swing in conjunction with the vertical movement of the fin 34. On the other hand, 36
Is a guide plate slidably provided on the outer surface of the swinging assembly A in the front-rear direction.
An inclined guide portion 36a that contacts the roller 35a is formed on the upper portion of the guide plate 36, and a rack portion 36b that meshes with a pinion gear 37a of a fin drive motor 37 (motor with a reduction mechanism) is formed on the front portion of the guide plate 36. Are formed. That is, since the inclined guide portion 36a moves the roller 35a up and down in accordance with the forward and backward sliding position of the guide plate 36, the forward and reverse drive of the fin drive motor 37 forcibly sliding the guide plate 36 forward and backward. The opening degree (fin interval) of the chaff sheave 32 can be adjusted. Incidentally, each fin 3 of this embodiment
4 are grouped into a front-stage fin 36F, a middle-stage fin 36M, and a rear-stage fin 36R according to the distance to the oscillating flow plate 21, and are connected so as to interlock with each other in this group. The opening adjustment range and the opening change pattern of each fin 36 can be set for each group.

Reference numeral 38 denotes a fin opening detection sensor for detecting the opening of the chaff sheave 32. The fin opening detection sensor 38 includes a potentiometer 38b and a potentiometer 38 integrally mounted on a sensor bracket 38a.
b, a detection plate 38c provided integrally with the input shaft;
It is composed of an elastic machine (not shown) for urging the detection plate 38c backward. Then, the detection plate 38c
Abuts on a pin 36c projecting from the guide plate 36, and rotates the input shaft of the potentiometer 38b in accordance with the front-rear position of the pin 36c.
, The opening degree of the chaff sheave 32 that changes according to the front-back position can be detected. Reference numeral 36d denotes an elongated guide hole formed in the guide plate 36 in the front-rear direction, and 39 denotes a stopper guide for guiding the guide hole 36d slidably back and forth and preventing the guide plate 36 from being pulled out. The position where the end of the guide hole 36d contacts the retaining guide member 39 is the mechanical operation limit position of the guide plate 36.

Reference numeral 40 denotes a dust chamber top provided above the end of the sorting chamber S1. The dust chamber top 40 is provided by a Karamin fan 23, a second sorting fan 27, and a dust fan 30. While forming a separation wind path that guides the generated separation wind to the dust exhaust fan 30 at a position more leeward than the filtration separation unit 22,
Since the sorting wind that has reached the dust discharge chamber S2 is a wind that has blown through the filtering and sorting unit 22, the wind pressure (wind force) changes according to the amount of the sorted material in the filtering and sorting unit 22.

Reference numeral 41 denotes a flow sensor mounted on the outer surface of the dust chamber S2. The suction port 41a of the flow sensor 41 communicates with the outside through a suction pipe 42.
The discharge port 41b is connected to the blowing pipe 43 and the blowing nozzle 44.
Therefore, the air pressure (atmospheric pressure) outside the machine and the air pressure of the dust chamber S2 (negative pressure generated according to the wind pressure of the sorting wind) are provided inside the flow rate sensor 41. Is generated according to the differential pressure of the air.

The flow rate sensor 41 is provided with an ambient temperature sensor for detecting an ambient temperature in a detection air passage extending from the suction port 41a to the air outlet 41b, and a heating temperature is controlled so as to be higher than the ambient temperature by a predetermined temperature. Heater, a leeward temperature sensor disposed on the leeward side of the heater, and a mechanically operable portion in which a detection chip incorporating a leeward side temperature sensor disposed on the leeward side of the heater is disposed, The flow rate is detected based on the temperature difference between the detected temperature on the leeward side and the detected temperature on the leeward side. In other words, when there is no flow in the detection air path, the temperature distribution around the heater becomes uniform, so that the temperature difference becomes “0”. Since the distribution is biased to the leeward side according to the flow rate, the flow rate can be detected based on the temperature difference.

Reference numeral 45 denotes a microcomputer (CPU, R
(Including an OM, a RAM, etc.), on the input side of the selection control unit 45, in addition to the vehicle speed sensor 14, the fin opening detection sensor 38, and the flow rate sensor 41, ON / O "automatic sorting control" described later
Sorting automatic switch 46 for FF, work machine clutch sensor 4 for detecting ON / OFF of work machine clutch (threshing clutch)
7. Engine speed sensor 4 for detecting engine speed
8. Horn switch 4 for operating horn (not shown)
9 are connected via a predetermined input interface circuit, while the fin drive motor 37 described above is connected to the output side.
In the operation unit 6, a fir indicator 50 and the like for emitting and displaying the storage amount of the storage tank 4 are connected via a predetermined output interface circuit. That is, the selection control unit 45
Include a “selection automatic control” that automatically controls the opening of the chaff sheave 32 in response to various input signals, and a “wind indicator” that displays the wind force (wind pressure) of the sorting wind using the fir indicator 50. A control program is provided. Hereinafter, control procedures of “automatic sorting control” and “wind indicator” will be described with reference to flowcharts.

In the "selection automatic control", first, ON / OFF of the selection automatic switch 46 is determined, and the determination is NO.
In the case of, "selection manual control" defined as a subroutine is executed, but in the case of YES, ON / OFF of the work machine clutch sensor 47 is determined, and the OF
When it is determined to be F, the process immediately returns to the main routine, and when it is determined to be ON, a subroutine for setting the upper limit rank variable and the lower limit rank variable according to the vehicle speed is executed. That is, in this subroutine, after determining whether the current vehicle speed is included in the low speed range, the medium speed range, or the high speed range, the maximum ranks MAX0 to MAX2 (the upper limit of the opening control range for each vehicle speed) suitable for the vehicle speed range. The opening degree) and the minimum ranks MIN0 to MIN2 (the lower limit opening degree of the opening control range for each vehicle speed) are set to the upper limit rank variable and the lower limit rank variable, respectively. That is, attention is paid to the vehicle speed, which is a variable element of the supply amount of stem and stem, and the opening control range of the chaff sheave 38 (the rank increasing / decreasing range of the stepwise opening control) is determined based on the vehicle speed detection.

When the above processing is completed, it is determined whether or not the current flow sensor value (wind pressure) is a reference value (α2 ≦ x ≦ α3). Here, when it is determined that the flow rate sensor value is the reference value, the current rank (rank counter variable) is maintained, but when the flow rate sensor value is smaller than the dead zone lower limit α2, the current rank (stepwise) is determined. While the flow rate sensor value is larger than the dead zone upper limit α3 (α3> α2), the rank increase process of the current rank is executed. ing. Since the rank-up process and the rank-down process are executed within a range not exceeding the upper rank variable and the lower rank variable, the opening control by vehicle speed determined based on the vehicle speed which is a variable factor of the supply amount of stem and culm. Based on the range, the chaff sheave 38 is set according to the flow sensor value.
The target opening (rank counter) is gradually increased / decreased, and as a result, the opening control of the chaff sheave 38 according to the change in the wind pressure of the sorting wind while ensuring the responsiveness to the change in the stem stalk supply amount. Can be performed.
In the rank-down processing, the rank-down delay flag is set, and after the countdown of the rank-down delay timer is started, the current rank is rank-downed (current rank ← current rank-1) after the end of the timer. In the rank-up process, the rank-up delay flag is set, and after the count-up of the rank-up delay timer is started, the current rank is ranked up after the end of the timer (current rank ← current rank + 1). ).

As described above, when the target opening of the chaff sheave 38 is gradually increased or decreased in accordance with the flow sensor value, the engine speed is referred to prior to the determination of the flow sensor value. And the engine speed is K
If it is 1 or less, it is determined that the processing is a seed processing, a seed flag is set, and the wind pressure sensor reference value is
The seed processing reference values α1 and α2 are set to be smaller than the aforementioned threshing processing reference values α2 and α3. That is, at the time of seed treatment, the opening of the chaff sheave 32 is automatically controlled so that the current flow sensor value maintains the reference value (α1 ≦ x ≦ α2). In this way, it is possible to prevent the inconvenience that the sorting accuracy is reduced and the scattering particles are increased, and that the engine speed is reduced during the seed processing, and the seed processing is automatically performed based on the engine speed. In order not to reduce the operation labor compared to the case where the seed processing is determined by the switch switching operation, it is possible to avoid a decrease in sorting accuracy and an increase in scattered particles due to forgetting to switch. Has become. The seed flag is
It is cleared when the engine speed reaches or exceeds K2.

On the other hand, in the "wind indicator", first,
Horn switch 49 when power is turned on (key switch ON)
Is determined to be ON. If the determination is NO, the process returns to the main routine. On the other hand, if the determination is YES, the flow sensor value (wind power) is set to a predetermined threshold value 1 to 5. If the flow sensor value is equal to or less than the threshold value 1, all the indicator lamps L
1. Turn off L1, L3 (fir indicator 50),
When the flow sensor value is larger than the threshold value 1 and equal to or smaller than the threshold value 2, the indicator lamp L1 is made to blink, and the flow sensor value is larger than the threshold value 2 and When the value is 3 or less, the indicator lamp L1 is turned on. When the flow rate sensor value is larger than the threshold value 3 and is equal to or less than the threshold value 4, the indicator lamps L1 and L2 are turned on. When the flow sensor value is larger than the threshold value 4 and equal to or smaller than the threshold value 5, the indicator lamps L1, L2, and L3 are turned on, and when the flow sensor value is larger than the threshold value 5, , And indicator lamps L1, L2, L3 are made to blink. That is, since the fir indicator 50 is used to display the wind force (wind pressure) of the sorting wind, it is not possible to grasp the sorting processing status based on the wind display, and the control data suitable for the regionality, variety, etc. Can be obtained, and the sensor reference values α1, α
When a reference value correction dial for correcting 2, α3 is provided, sensor reference values α1, α2, α3 according to wind power display.
There is an advantage that can be corrected.

In the apparatus configured as described above, in automatically controlling the opening of the chaff sheave 38, the amount of material to be sorted by the threshing / sorting unit 3 is detected, and the chaff sheave is controlled so that the detection value maintains a predetermined reference value. In order to determine the target opening degree of No. 38, it is determined whether or not the object to be sorted is a seed, and when it is determined that the object to be sorted is a seed, the reference value is set to the grain size. Since it is changed to the seed processing reference value that is set to be smaller than the processing reference value, it is possible to prevent the inconvenience of lowering the sorting accuracy in seed processing and increasing scattering particles.

Also, paying attention to the fact that the engine speed is reduced during the seed processing, the seed processing is automatically determined based on the engine speed. Thus, it is not possible to reduce the operation labor, and it is possible to avoid a decrease in sorting accuracy and an increase in flying particles due to forgetting to switch.

Further, in order to judge the amount of the material to be sorted based on the detection signal of the flow rate sensor 41 for detecting the wind pressure of the sorting wind, the thickness of the material to be sorted is determined by a contact type sensor. Compared with this, the detection accuracy can be improved.

The present invention is, of course, not limited to the above embodiment. For example, as in the second embodiment shown in FIG. 15, a seed discriminating switch is provided and the switch is turned on / off. The seed processing may be determined based on the determination.

[Brief description of the drawings]

FIG. 1 is a plan view of a combine.

FIG. 2 is a power transmission diagram of a transmission.

FIG. 3 is a schematic side view of a threshing sorter.

FIG. 4 is a side view of a main part of the above.

FIG. 5 is a side view of the swing assembly.

FIG. 6 is a plan view of the same.

FIG. 7 is an enlarged plan view of a main part of the same.

FIG. 8 is a side view of the fin.

FIG. 9 is a plan view of a main part showing an arrangement of blow-off nozzles.

FIG. 10 is a side view of the essential parts of the same.

FIG. 11 is a rear view of the main part of the above.

FIG. 12 is a block diagram showing inputs and outputs of a selection control unit.

FIG. 13 is a flowchart of “selection automatic control”.

FIG. 14 is a flowchart of “wind indicator”.

FIG. 15 is a flowchart of “selection automatic control” showing the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 2 Pre-processing part 3 Threshing and sorting part 14 Vehicle speed sensor 22 Filtration and sorting part 29 Karamin fan 32 Chief sieve 41 Flow rate sensor 45 Sorting control part 48 Engine rotation sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahiro Nishikori 667 Idai-cho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. 667 No. 1 F term in Mitsubishi Agricultural Machinery Co., Ltd. (reference) 2B095 AA01 AA02 AA07 AA12 BA03 BA11 BA21 BA25 BA30 BA35 BB29 CA03 CA04 EA02 GA02 GA04 GA05 GA06 GA09 GA16 GA17 GA18 GB10 GB11

Claims (3)

[Claims] Claims 1. A stalk that is sequentially supplied is degranulated from the culm, and the degranulated culm is roughly sorted by a filtration and sorting unit, and the culled and sorted material leaked from the filtration and sorting unit is collected by Karamin. A sorting device for finely selecting by a sorting wind of a fan, wherein the sorting device is provided with a sensor for detecting an amount of an object to be sorted, which detects an amount of an object to be sorted, and a filter so that a detection value of the sensor maintains a predetermined reference value. In providing the sorting automatic control means for automatically controlling the opening degree of the sorting unit, the sorting automatic control means has a sorting processing object determining means for determining the type of the sorting processing object, and the sorting processing object is a seed. And a sensor reference value changing means for changing the reference value of the sorted material amount detection sensor to a seed processing reference value which is set to be smaller than the kernel processing reference value when it is determined that there is a sensor processing value. Sorting device. 2. The sorting apparatus according to claim 1, wherein the sorting target discriminating means automatically determines seed processing based on an engine speed. 3. The sorting apparatus according to claim 1, wherein the sensor for detecting the amount of the sorted material detects the amount of the sorted material based on the wind pressure of the sorting wind.