JP2009055804A - Sorter for use in thresher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sorter for use in a thresher made to exhibit an excellent sorting capability by making the sorting capability adjustable according to an amount of contaminants contained in an object to be sorted. <P>SOLUTION: The sorter equipped with a thickness sensor 15 for detecting the thickness of a layer of an object to be sorted overlying and flowing over a rocking conveyor board for successively conveying the object to be sorted by its rocking motion and a second flow rate sensor 24 for detecting the flow rate of grains flowing through a second recycle screw for recycling an inadequately sorted object back to a mid position of the sorting route, for example, back to the rocking conveyer board, is characterized in that the amount of contaminants in the object to be sorted is judged whether to be large or small by comparing the detected values detected by the thickness sensor 15 and the second flow rate sensor 24 with a calibration line memorized in a means 50 for controlling the sorting so as to increase the air flow rate of a winnower fan by controlling a winnower fan motor 54 if a large amount of contaminants is detected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sorting device for a threshing machine, and more particularly to a sorting device for a threshing machine that appropriately changes and adjusts the sorting ability of an object to be sorted.

  Conventionally, a layer thickness sensor that detects the layer thickness of the object to be stacked on the rocking and sorting means that performs the leakage selection while transferring the object to be selected. A screening device for a threshing machine has been devised that adjusts the screening capability based on the output of a second flow sensor or the like that detects the flow rate of an object (see Patent Documents 1 to 3).

  The sorting device described in Patent Document 1 is based on the layer thickness of the object to be sorted on the rocking sorting means (the rocking sorting plate) detected by the layer thickness sensor, and the target values for the air volume of the fan and the fin opening of the chaff sheave. The detected values of the layer thickness sensor and the second flow rate sensor are stored in advance in the sorting control means (control means), and the flow rate of the second reducing spiral (screw conveyor) and the layer thickness on the swing sorting means. When the predicted amount is out of the range, the target value is corrected.

  Similarly, the sorting apparatus described in Patent Document 2 performs sorting control based on the detection value from the layer thickness sensor or the vehicle speed sensor, and also by the flow rate of the sorting object reduced from the second reducing spiral (screw conveyor). The sorting control is configured to be corrected.

  Further, the sorting device described in Patent Document 3 is based on the reference values of the second flow rate sensor (grain sensor) and the layer thickness sensor respectively stored in the sorting control means in advance, and the second reduced spiral (second transfer spiral). Selection control is performed by comparing and calculating the detection value of the second flow rate sensor and the layer thickness sensor that detect the amount of grain from the dust outlet of the second processing cylinder that reprocesses the reduced sorting object.

JP 2001-33 A Japanese Patent No. 2721083 Japanese Patent Laid-Open No. 10-155349

  The above sorter adjusts the fin opening of the chaff sheave and the air volume of the fan based on the detection values of the layer thickness sensor, No. 2 flow sensor, etc., and improves the sorting performance. It is not intended to control the sorting by discriminating the amount of impurities in the selection object stacked on the same, and the same selection control is performed regardless of the amount of impurities in the selection object, so that the sorting performance is sufficient. is not.

  In view of this, the present invention has a good sorting performance by discriminating the number of impurities in the sorting object stacked on the swing sorting means by the judging means, and adjusting the sorting ability based on the judgment result of the judging means. An object is to provide a threshing machine sorting device.

According to the first aspect of the present invention, there is provided a swing sorting means (10) for transporting and leaking a material to be sorted, and a wind sorting for sorting by sorting air to the material to be sorted leaked from the swing sorting means (10). Means (7), and in a sorting device (2) of a threshing machine (1) that sorts a material to be sorted into grains and impurities,
A discriminating means (15, 24, 50) for discriminating the amount of impurities contained in the object to be sorted on the swing sorting means (10);
Based on the determination result of the determining means, adjust the sorting capability of the sorting object,
It is in the screening apparatus of the threshing machine characterized by this.

The invention according to claim 2 is characterized in that the discriminating means (15, 24, 50) includes a layer thickness sensor (15) for detecting the thickness of an object to be sorted on the swing sorting means (10),
A second flow rate sensor (24) for detecting the grain flow rate in the selection object of the second reduced helix (25) that reduces the selection object that is insufficiently selected,
Due to the relationship between the layer thickness on the rocking sorting means (10) based on the layer thickness sensor (15) and the grain flow rate based on the second flow rate sensor (24), the rocking sorting means (10) It is possible to determine the amount of impurities contained in the selection object.
It exists in the sorting apparatus of the threshing machine of Claim 1.

  In addition, although the code | symbol etc. in a parenthesis is for contrast with drawing, it does not have any influence on a claim by this.

  According to the first aspect of the present invention, the amount of impurities contained in the object to be sorted on the swing sorting means is discriminated by the discriminating means, and the sorting capability is adjusted based on the judgment of the discriminating means. The sorting performance can be improved. Thereby, it is possible to prevent the objects to be sorted from collecting on the swinging sorting means and leaking out of the objects to be sorted from the sorting chamber.

  According to the second aspect of the present invention, the discriminating means detects the thickness of the sorting object on the swing sorting means and the grain flow rate in the sorting object of the second reduced spiral 2 The flow rate sensor is provided, and the amount of impurities in the object to be sorted is determined by the relationship between the detection values of the layer thickness sensor and the number 2 flow rate sensor. It is possible to correct the basic sorting control for sorting the sorted items to improve the sorting performance, and to use the layer thickness sensor and the second flow rate sensor for the basic sorting control.

  Next, an embodiment according to the present invention will be described with reference to the drawings.

<First Embodiment>
As shown in FIG. 1, the combine threshing machine 1 includes a threshing device 30 and a sorting device 2 provided below the threshing device 30. The threshing device 30 receives cereals harvested by a pretreatment unit (not shown). A first handling chamber 31 and a second handling chamber 32 are provided along the feed chain 40 to be nipped and conveyed. The first handling chamber 31 and the second handling chamber 32 are provided with a first handling cylinder 33 and a second handling cylinder 35, respectively. Receiving nets 34 and 36 are arranged below 35, and the objects to be sorted mixed with grains such as grain and sawdust are screened and leaked. On the other hand, the waste removed from the grain by the first and second handling drums 33 and 35 is conveyed to the post-processing device 38 by the waste chain 41 arranged at the rear end of the feed chain 40. Then, it is cut to an appropriate length and discharged from the discharge port 42.

  A sorting device 2 is provided below the receiving nets 34, 36, and the swinging sorting means 10 and the wind sorting means 7 are provided in a sorting chamber surrounded by a side plate erected from the base 3. Has been. The oscillating sorting means 10 includes an oscillating flow plate 11 that sequentially oscillates and conveys the object to be sorted leaking from the receiving net 34, and a plurality of fins 12a provided behind the oscillating flow plate 11. A chaff sheave 12, a glenshave 13 that is formed below the chaff sheave 12 and is made of a wire mesh member having a predetermined mesh, and a stroll rack 14 that sifts the material that has leaked from the receiving net 36. It is configured to reciprocally swing continuously at a predetermined cycle by a swing link such as a cam or a crank mechanism (not shown).

  Further, the oscillating flow plate 11 is provided with a float type layer thickness sensor 15 (discriminating means), and detects the layer thickness of the object to be sorted stacked on the oscillating flow plate 11. Note that the layer thickness sensor 15 may use another method such as an ultrasonic wave instead of the float method.

  On the other hand, the wind sorting means 7 comprises the Kara fan 4 and the second sorter fan 5 and winds the objects to be sorted by the sorting wind, and the dust blown off by the wind sorting means 7 is collected as dust. It is discharged from a dust outlet 8 provided with a fan 6. The Kara fan 4 is provided below the oscillating flow plate 11 and wind-sorts objects to be sorted leaking through the chaff sheave 12 and the Glen sheave 13, and the No. 2 sorting fan 5 is No. 1 spiral 22 and No. 2 An object to be sorted that is disposed between the spiral 21 and leaks through the Strollac 14 is subjected to wind sorting.

  In addition, the fin 12a of the chaff sheave 12 is provided so that the opening degree thereof can be adjusted, and the amount of leakage of the object to be sorted is adjusted and the flow rate of the sorting air of the tang fan 4 is also controlled. Further, a rectifying plate 4 a is provided at the vent hole of the tang fan 4.

  The grain carefully selected by the above-described Kara fan 4 is laterally conveyed by the first spiral 22 and is stored in a hopper (not shown) through the raised spiral cylinder 23. Further, the insufficiently sorted object that has leaked the Strollac 14 is transported sideways by the second spiral 21 and is moved in the middle of the sorting path by the second reduced spiral 25 in the second reduced spiral cylinder 20. It is reduced onto the flow plate 11 and the chaff sheave 12.

  As shown in FIGS. 2 and 3, the second reduced spiral 25 is provided with a plurality of helical blades 25b around a helical shaft 25a, and an emitter 25c is disposed at the upper end thereof. Further, a second flow rate sensor 24 (discriminating means) is provided at the discharge port of the second reducing helical cylinder 20, and includes a rotation support shaft 24b and a collision plate 24a fixed to the rotation support shaft 24b. It is formed with.

  Since the second flow rate sensor 24 detects the collision energy when the object to be sorted bounced up to the emitter 25c collides with the collision plate 24a, the collision of foreign matter such as saw dust is extremely light. It is possible to detect the flow rate of the grain in the second reduced helix 25 by detecting only the collision energy of the grain having a constant weight without detecting the energy. In addition, a blower 26 is disposed in the vicinity of the second flow rate sensor 24 to prevent impurities from clogging the discharge port.

  Next, the operation of the threshing machine sorting apparatus according to the first embodiment of the present invention will be described mainly based on the flowchart of FIG.

  When the operator starts the harvesting work, he turns on the automatic sorting switch 51 and the work machine clutch lever (work machine clutch switch 53) shown in FIG. 4 to activate the sorting automatic control of the sorting apparatus 2 and starts the work (S1). . When the threshing operation is started, the sorting control means 50 (discriminating means) determines the air flow of the Chinese fan or the fin of the chaff sheave 12 based on the layer thickness of the object to be sorted on the oscillating flow plate 11 detected by the layer thickness sensor 15. The opening degree is controlled by the Kara fan motor 54 and the chaff sheave motor 55 to adjust the amount of objects to be sorted on the oscillating flow plate (basic sorting control) (S2).

  The sorting control means 50 controls the amount of the sorting object on the oscillating flow plate 11 based on the detection result of the layer thickness sensor 15, and the chaff sheave 12 is controlled by the fin opening sensor 52 and the second flow rate sensor 24. The fin opening KF and the flow rate KN of the grain of the second reduced spiral 25 are read (S3), (S4).

  The sorting control means 50 is configured to measure the layer thickness of the sorting object on the oscillating flow plate 11 and the grain flow rate of the second reduced spiral 25 measured using the sorting object of only the grain shown in FIG. (Calibration line L1) is stored, the calibration line L1 at the fin opening KF read by the fin opening sensor 52 is compared with the output value of the second flow rate sensor 24, and the layer thickness sensor 15 is compared. Output predicted value P (the amount of objects to be sorted on the oscillating flow plate 11 of the calibration line L1 at the detection value KN of the second flow rate sensor 24) is calculated (S5).

  Next, the selection control means 50 reads the detection value KSN of the layer thickness sensor 15 (S6), and compares the total value of the output predicted value P and the allowable value K with the detection value KSN of the layer thickness sensor 15. The degree of contamination of the object to be sorted on the oscillating flow plate 11 is determined (S7).

  When the detection value KSN of the layer thickness sensor 15 is larger than the total value of the output predicted value P and the allowable value K, it is determined that a large amount of impurities are contained in the selection object on the oscillating flow plate 11; While increasing the air volume of the tang fan 4 (S8), the above steps are repeated until the detection value KSN of the layer thickness sensor 15 becomes smaller than the total value of the predicted output value P and the allowable value K.

  On the other hand, when the detection value KSN of the layer thickness sensor 15 is within the total value of the predicted output value P and the allowable value K, it is determined that there are few contaminants in the object to be sorted on the oscillating flow plate 11, and It is confirmed whether or not the Chinese fan air volume is the standard air volume (S9). If the Chinese fan air volume is not the standard air volume, the standard air volume is returned (S10). When the Kara fan airflow becomes the standard airflow, it is determined whether or not the mowing operation is to be ended (S11). If it is to be ended, the sorting control is ended (S12), and if not, the above steps are repeated.

  In the first embodiment, the basic sorting control is performed based on the layer thickness of the member to be sorted on the oscillating flow plate 11, but the second reducing spiral 25 is detected based on the detection by the second flow rate sensor 24. The flow rate of the object to be sorted may be adjusted. Alternatively, the flow rate may be adjusted based on the cutting travel speed detected by the vehicle speed sensor, or may be controlled based on the transported culm volume.

  Further, the amount of impurities in the object to be sorted is determined based on the detection values of the layer thickness sensor 15 and the second flow rate sensor 24. However, instead of the second flow rate sensor 24, the swing link of the swing sorting means 10 is used. Alternatively, a mechanical sensor may be arranged to detect the grain amount from the output. Further, when it is determined that there are many impurities in the selection object, the fin opening of the chaff sheave 12 may be adjusted instead of the air volume of the tang fan, and both the air volume of the tang fan fan and the fin opening of the chaff sheave 12 may be adjusted. You may adjust it.

  By configuring the sorting device 2 of the threshing machine 1 as described above, the sorting object on the oscillating flow plate 11 measured using the sorting object only of the grains stored in the sorting control means 50 is obtained. By comparing and calculating the relationship between the layer thickness and the grain amount of the second reduced spiral (calibration line L1) and the detection values of the layer thickness sensor 15 and the second flow rate sensor 24, It is possible to determine the number of contaminants in the selection.

  Further, when it is determined that there is a large amount of foreign matter in the sorting object, the sorting capacity of the sorting object can be improved by increasing the air volume of the tang fan 4 and on the oscillating flow plate 11. The objects to be sorted accumulate and the objects to be sorted do not leak from the sorting chamber.

<Second Embodiment>
Below, the point which is different from 1st Embodiment in 2nd Embodiment which concerns on the 2nd Embodiment which adjusts the increase amount of a Kara fan air volume according to the mixing degree of a foreign material is demonstrated. In addition, the same code | symbol shall be attached | subjected about the thing corresponding to 1st Embodiment.

  As shown in FIG. 6, the sorting control means 50 calculates the predicted output value P based on the calibration line L1 shown in FIG. 7B as in the first embodiment, and also detects the detected value of the layer thickness sensor 15. The total value of the KSN, the predicted output value P, and the allowable value K is compared to determine the number of contaminants in the selection object on the oscillating flow plate 11 (S1 to S6).

  When the detection value KSN of the layer thickness sensor 15 is larger than the total value of the predicted output value P and the allowable value K, the sorting control means 50 mixes a large amount of impurities in the sorting object on the oscillating flow plate 11. And the excess amount of the detection value KSN of the layer thickness sensor 15 from the total output value P and the allowable value K is classified into levels 1 to 3 as shown in FIG. In addition, it is determined that the larger the excess amount is, the more contaminants are contained in the object to be sorted (S13).

  Then, the increase amount of the tang fan fan is also classified into levels 1 to 3 according to the level of the excess amount, and the increase amount of the tang fan 4 is increased as the excess amount increases (S8a, S8b, S8c). The above steps are repeated until the detection value KSN of the layer thickness sensor 15 becomes smaller than the total value of the predicted output value P and the allowable value K. When the detection value KSN of the layer thickness sensor 15 is smaller than the total value of the predicted output value P and the allowable value K, the same control as that of the first embodiment is performed.

  By configuring the sorting device 2 of the threshing machine 1 as described above, the sorting performance is improved by adjusting the air volume of the tang fan 4 when it is determined that there are many impurities in the sorting objects on the oscillating flow plate 11. In addition, it is possible to perform finer sorting control by classifying according to the mixing degree of the contaminants and changing the amount of increase in the air volume of the tang fan 4.

The schematic side view of the threshing machine which concerns on this invention. The side view of the 2nd reduction | restoration spiral which concerns on this invention. The top view of the 2nd reduction | restoration spiral which concerns on this invention. The block diagram which concerns on the selection automatic control of the threshing machine of this invention. The flowchart of the selection automatic control which concerns on 1st Embodiment. The flowchart of the selection automatic control which concerns on 2nd Embodiment. (A) A graph showing the relationship between the layer thickness on the oscillating flow plate measured only with the grain according to the first embodiment and the flow rate of the second reduced helix, (b) the grain according to the second embodiment The graph which shows the relationship between the layer thickness on a rocking flow board measured only with the grain, and the flow volume of the 2nd reduction | restoration spiral.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thresher 2 Sorting device 7 Wind sorting means 10 Oscillating sorting means 15 Layer thickness sensor (discriminating means)
24 No. 2 flow sensor (discriminating means)
25 No. 2 reduced spiral 50 Sorting control means (discriminating means)

Claims (2)

A swing sorting means for transporting and leaking the object to be sorted, and a wind sorting means for sorting by sorting the sorting object that has leaked from the swing sorting means, and sorting the sorted object with grains. In the sorting device of the threshing machine that sorts into products,
A discriminating means for discriminating the amount of impurities contained in the object to be sorted on the swing sorting means;
Based on the determination result of the determining means, adjust the sorting capability of the sorting object,
Threshing machine sorting device characterized by the above. The discriminating means includes a layer thickness sensor for detecting the thickness of the object to be sorted on the swing sorting means,
A second flow rate sensor for detecting a grain flow rate in the second reduced helical target to reduce a poorly sorted target,
Based on the relationship between the layer thickness on the rocking sorting means based on the layer thickness sensor and the grain flow rate based on the second flow rate sensor, it is possible to determine the amount of impurities contained in the object to be sorted on the rocking sorting means. Become
The threshing machine sorting apparatus according to claim 1.

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