JP6578123B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus capable of adjusting the selection amount of a processed product.

  The swinging sorter that can adjust the amount of leakage of the processed material by opening and closing the fins, the blower fan that raises the sorting wind for sorting the processed material, the detection sensor that detects the amount of processed material and the vehicle speed, and the shaking And a control unit that controls the fin opening degree of the dynamic sorting body and the rotation speed of the blower fan, and the control unit can appropriately adjust the sorting ability of the processed material based on the detection value detected by the detection sensor. The threshing apparatuses described in 1 to 4 are conventionally known.

JP 2012-2000192 A Japanese Patent No. 3198508 JP-A-8-37910 JP-A-10-248367

  In the above-mentioned document, the sorting ability of the processed object can be adjusted as appropriate according to the detection value detected by the detection sensor, while the rotation speed of the tang fan and the opening degree of the fins of the swing sorter depends on the detection value of the detection sensor. Therefore, there is a problem that the load on the mechanism for operating the red fan or the swing sorter is large depending on the fluctuation of the detected value, and the configuration is likely to be complicated.

  In the present invention, in the threshing apparatus in which the control unit is configured so that the opening degree of the fins of the swinging sorter and the rotation speed of the blower fan can be changed, the grains are scattered together with the sawdust with a simple configuration. It is an object of the present invention to provide a threshing apparatus that can prevent the occurrence of the threshing and can reduce the load on the blower fan by suppressing the number of rotations of the blower fan.

In order to solve the above-mentioned problems, the present invention firstly, a swing sorting body 22 that can adjust the amount of leakage of the processed material by opening and closing the fins 22a, and a blower fan that generates a sorting air for selecting the processed material. 23, a detection sensor 28 for detecting the amount of processed material, and a control unit 50 for controlling the fin opening degree of the swing sorter 22 and the rotational speed of the blower fan 23. The blower fan changes the rotational speed. Thus, the control unit 50 detects that the amount of processed material detected by the detection sensor 28 is within the fin adjustment value Q1, which is a threshold having a predetermined range. In this case, the opening degree of the fin 22a is maintained, and when the amount of processed material detected by the detection sensor 28 is larger than the fin adjustment value Q1, the fin 22a is opened to increase the leakage amount, and detection is performed. When the processed material amount detected by the sensor 28 is smaller than the fin adjustment value Q1, the fin automatic control for reducing the leakage amount by closing the fin 22a is executed, and the control unit 50 includes a detection sensor. When it is detected that the processing amount detected by 28 is larger than the fan acceleration value Q2, which is a predetermined threshold, the rotational speed of the blower fan 23 is increased, and the processing amount detected by the detection sensor 28 is detected. Is detected to be less than the fan acceleration value Q2, the automatic fan control is performed so as not to increase the rotational speed of the blower fan 23, and the controller 50 increases the fan speed. the speed value Q2 is set larger than the fin adjustment value Q1, before increasing the air volume of the sorting style of the winnowing fan fan automatically controlled by the blower fan 23, the fins automatic control Is characterized by being configured to increase the lower the amount leaking the opening is increased to the fins 22a of the swing sorting body Te.

  Second, the control unit 50 is configured to set at least two threshold values of the fan acceleration value so that the rotational speed of the blower fan 23 can be increased stepwise.

  Third, a vehicle speed detection sensor 74 that detects the vehicle speed and an opening degree detection sensor 71 that detects the opening degree of the fin 22a are provided, and the control unit 50 has a vehicle speed equal to or higher than a predetermined speed and the fin 22a. When it is detected that the opening degree is equal to or larger than the predetermined opening degree, the rotational speed of the blower fan 23 is increased even if the amount of the processing object detected by the detection sensor 28 does not exceed the fan acceleration value. It is characterized by speed.

  Fourth, the control unit 50 is characterized in that when the sensors used for controlling the rotational speed of the blower fan 23 fail, the rotational speed of the blower fan 23 is fixed on the lowest side.

  If the detection value of the detection sensor exceeds the fin adjustment value, the fin opening is increased. If the detected value exceeds the fan acceleration value, the fan rotation speed is increased. Since the amount of swarf on the rocking sorter increases and leakage due to fins worsens, the rotation speed of the blower fan can be increased to fly the swarf and promote grain leakage, It is possible to efficiently prevent grains from being scattered outside the machine together with sawdust and the like, and it is possible to configure the control unit relatively easily without requiring complicated control. Moreover, since the switching frequency of the rotation speed of a ventilation fan can be suppressed, the load concerning a ventilation fan can be suppressed.

  Further, according to the control unit configured to set at least two threshold values of the fan acceleration value and increase the rotational speed of the blower fan stepwise, the rotational speed of the blower fan is abruptly increased. By increasing the speed, it is possible to prevent the grains from being scattered outside the machine together with the sawdust and the like.

  Further, a vehicle speed detection sensor for detecting a vehicle speed and an opening degree detection sensor for detecting the opening degree of the fin are provided, and the control unit is configured such that the vehicle speed is a predetermined speed or more and the opening degree of the fin is a predetermined value or more. If it is detected that the speed of rotation of the blower fan is increased, not only the amount of processed material on the rocking sorter but also the amount of processed material supplied to the threshing device and fin opening. Even if it is based on the degree, since the rotation speed of the blower fan is increased, it is possible to more reliably prevent the grains from being scattered outside the machine together with the sawdust and the like.

  In addition, when the sensors used for controlling the rotational speed of the blower fan break down, the control unit can reduce the amount of processing object to be processed according to the one that fixes the rotational speed of the blower fan on the lowest side. It is possible to prevent the rotation speed of the blower fan from being increased due to the malfunction of the sensors, and the grains are prevented from being blown out together with the sawdust and the like.

It is a combine to which the present invention is applied. It is a principal part side view which shows the structure of a threshing apparatus. It is a principal part front view which shows the structure of a threshing apparatus. (A) is a principal part right view of a threshing apparatus, (B) is a principal part left side sectional view of a threshing apparatus. It is a power system diagram of this combine. It is a side view of a detection apparatus. It is operation | movement explanatory drawing of a detection apparatus. (A) is a chart showing the rotation speed of the red pepper fan in the manual mode, (B) is a chart showing the rotation speed of the red pepper fan in the automatic mode, and (C) is a chart showing the rotation speed of the red pepper fan. It is the model figure which showed the timing which carries out the speed-up operation of a fan. It is a block diagram which shows the structure of a control part. It is a processing flow figure of the threshing selection control which a control part performs. It is a flowchart of the subroutine of fin automatic control. It is a flowchart of the subroutine of a Kara fan automatic control.

  FIG. 1 is a combine to which the present invention is applied, FIGS. 2 and 3 are a side view and a front view of main parts showing the configuration of the threshing apparatus, and FIG. 4 (A) is a main part of the threshing apparatus. FIG. 4B is a right side sectional view of a main part of the threshing apparatus, and FIG. 5 is a power system diagram of the present combine. From the figure, this combine is connected to a traveling machine body 2 supported by a pair of left and right crawler type traveling devices 1 and 1 which are traveling parts, and is connected to the front of the traveling machine body so as to be able to move up and down, thereby performing harvesting work of cereals in a field And a pre-processing unit 3 to be performed.

  The traveling machine body 2 is provided with a cabin 4 in which a control unit that an operator enters and performs a steering operation is provided at a position right behind the pre-processing unit 3, and the pre-processing unit is diagonally left behind the cabin 4. 3. A threshing device 6 for performing threshing work etc. of the cereals harvested in 3 is installed, and a grain tank 7 for storing the grain that has been threshed is disposed behind the control unit and on the right side of the threshing device 6, and threshing is performed. A discharge part 8 for discharging sawdust and the like after threshing is provided behind the device 6.

  The pre-processing unit 3 performs a cutting operation for cutting and harvesting the cereal grains in the field that are pulled up by the pulling device and the scraping device and scraped to the pre-processing unit 3 side with a cutting blade (not shown). The cereals harvested by the device 12 are conveyed to the threshing device 6 side.

  The threshing device 6 includes a threshing unit 13 that performs the threshing operation of the harvested cereal meal that is conveyed from the conveying device 12, and a processed product that has been arranged and threshed below the threshing unit 13, such as grain and sawdust. And a feed chain (conveying body) 15 that conveys the harvested cereals that have been delivered from the conveying device 12 on the preprocessing unit 3 side.

  The threshing unit 13 is provided around a handling chamber 16 in which the harvested cereal meal is conveyed from the rear end side of the conveying device 12 and a front and rear handling cylinder rotating shaft 17 formed over the entire front and rear direction of the handling chamber 16. It is provided so as to be freely rotatable, and has a cylindrical handling cylinder 18 having a funnel-shaped front end side, and an arc shape below the handling cylinder 18 and having a concave center in front view along the shape of the handling cylinder. Receiving network 19.

  The sorting unit 14 is formed between a pair of left and right side frames 21 and 21 facing each other in a parallel state. The sorting unit 14 includes a swing sorting body 22 in the front-rear direction for sorting and sorting the processing object, A tang fan (blower fan) 23 that wakes the sorting air toward the rear obliquely upward in the sorting unit 14, a second sorting fan 24 arranged behind the tang fan 23, and the center in the front-rear direction of the sorting unit 14 A first helix 26 in the left-right direction disposed in the vicinity of the portion and a second helix 27 arranged behind the first helix 26 are provided. The side frames 21 and 21 constitute a part of the frame of the threshing device 6, and the rear of the sorting unit 14 communicates with the discharge unit 20 side for discharging sawdust and the like outside the machine. It is open.

  The rocking sorter 22 includes a plurality of fins 22a arranged in parallel at a predetermined interval in the front-rear direction. The fins 22a are inclined in a front-rear and a rear-high state, and the grains are leaked from the gaps between the fins while the processed material is moved backward as the swinging sorter swings. The fin 22a is pivotally supported on the side plate of the swing sorter with the upper side as a fulcrum, and a plurality of fins are interlocked and connected via a connecting member (not shown). The front and rear inclination angle of the fin 22a can be adjusted. The interval between the fins (fin opening) can be changed by changing the front and rear inclination angle of the fins 22a.

  The tang fan 23 is configured to be able to adjust the air volume of the sorting air by changing the rotational speed.

  Further, by controlling the air volume from the tang fan 23 and the fin opening degree of the swing sorter 22 by the control unit 50 described later, the sorting quantity can be adjusted according to the quantity of the processed material. . Note that a detection device 28 for detecting the air volume (wind speed) at a predetermined location in the sorting unit 14 is provided on the outer surface side of the side frames 21 and 21, and the processing in the threshing device 6 is performed by the detection device 28. The quantity is detected. The configurations of the detection device 28 and the control unit 50 will be described later.

  With this configuration, the processed product falling from the handling chamber 16 above the sorting unit 14 is oscillated and sorted by the oscillating sorter 22, and the treated product falling from the oscillating sorter 22 is fed from the tang fan 23. The first thing that falls to the first spiral 26 side with little influence of the sorting wind, the second thing that falls slightly to the second spiral 27 side with some influence of the sorting wind, and the influence of the sorting wind It is wind-selected, such as sawdust blown to the rear upper side of the sorting unit 14.

  The grain selected by the sorting unit 14 is conveyed into the Glen tank 7 where the grain is stored by the lifted helix 31, and the grain in the Glen tank 7 is extended from the upper rear side of the traveling machine body 2. It is discharged out of the machine through the discharge auger 32.

  The control unit includes a tang dial 33 for adjusting the rotational speed of the tang fan 23 in a plurality of stages, a manual mode for manually adjusting the rotational speed of the tang fan 23, and a control unit automatically. A switching operation tool 34 for switching to an automatic mode to be controlled, a selection dial 36 for adjusting the opening degree of the fin 22a of the swing sorting body 22 in a plurality of stages, a fin manual mode for manually adjusting the opening degree of the fin 22a, A fin switching operation tool 37 for switching to a fin automatic mode automatically controlled by the control unit is provided. The tang dial 33 may also function as the tang switch operation tool 34, and the selection dial 36 may also function as the fin switching operation tool 37.

  Further, the steering unit operates the connection between the mowing clutch 25 and the work clutch 48 to drive the pre-processing unit and the threshing device to perform the mowing work, and to perform the cutting operation of the mowing clutch 25 and the working clutch. A clutch that performs a switching operation between a “threshing position” in which only the threshing device is driven by operating the connection 48 and a “cutting position” in which the power from the engine is disconnected by operating the cutting clutch 25 and the work clutch 48. An operation tool 73 is arranged.

  Next, the transmission structure of this combine is demonstrated based on FIG. 2 thru | or 5. FIG. As shown in FIG. 5, each part of the combine is driven by the power of the engine 40. The rotational power generated by the engine 40 is output to the output shaft 39, and the output shaft 39 is provided so that the work pulley 41 and the traveling pulley 42 rotate integrally.

  The power transmitted to the traveling pulley 42 is transmitted to the traveling HST 43 side by a belt, and is transmitted steplessly and then transmitted to the left and right traveling devices 1 and 1 via the traveling transmission.

  The power transmitted to the work pulley 41 is belt-transmitted to the first work transmission shaft 44, and the mowing unit 3 and the threshing device 6 are driven by the power transmitted to the first work transmission shaft 44. More specifically, the work transmission belt 47 that is wound around the work pulley 41 and the work transmission pulley 46 that rotates together with the first work transmission shaft 44 includes a tension pulley that adjusts the tension of the work transmission belt 47. Is provided with a work clutch 48 for connecting and disconnecting engine power to the first work transmission shaft 44. As a result, the power output from the engine 40 is transmitted from the output shaft 39 to the first work transmission shaft side 44 in an intermittent configuration.

  The power transmitted to the first work transmission shaft 44 is transmitted to the preprocessing unit 3 side and transmitted to the cutting blade 11 and the conveying device 12 side. The power transmitted from the first work transmission shaft 44 side to the pretreatment unit 3 side is configured to be intermittently operated via the mowing clutch, and only the threshing device 6 side is driven. Yes (hand-held mode).

  The first work transmission shaft 44 is provided so that the second work pulley 51 rotates integrally. The power transmitted to the first work transmission shaft 44 is transmitted between the second work pulley 51 and the second work transmission shaft. It is transmitted to a second work transmission shaft 52 that rotates integrally with the second work transmission pulley 54 via a second work transmission belt 53 wound around the pulley 54.

  The second work transmission shaft 52 is provided so that the threshing pulley 56, the blower pulley 57, and the sorting pulley 58 rotate integrally. Thereby, the motive power transmitted to the second work transmission shaft 52 is transmitted to the side of the barrel rotation shaft 17 for rotating the barrel 18 in the threshing device 6 via the threshing transmission pulley 56, Via the blower pulley 57, it is transmitted to the tang fan 23 side on the sorting section 14 side, and is transmitted to the swinging sorter 22 side via the sorting pulley 58.

  The blower pulley 57 is composed of a variable-diameter pulley whose diameter can be changed together with the passive-side blower pulley 59, and a counter shaft that drives the red fan 23 via the blower belt 61 that is wound around the pulleys 57 and 59. The power can be transmitted to the 62 side. Specifically, the power transmitted to the side of the red fan 23 can be changed by driving the red speed change motor 79 that changes the speed of the red fan 23 arranged on the outer surface side of the right side frame 21R. Has been. (See FIGS. 4 and 5).

  According to this configuration, the mechanism for shifting the operation of the red pepper fan 23 provided in the sorting unit 14 includes the left side frame 21L on which the transmission mechanism of the swing sorter 22 and the red pepper fan 23 is installed, and the right side on the opposite side. Since it is arranged on the outer surface side of the frame 21R, the space can be used efficiently.

  Next, based on FIG.6 and FIG.7, the structure of the said detection apparatus is demonstrated. FIG. 6 is a side view of the detection device, and FIG. 7 is an operation explanatory diagram of the detection device. The detection device 28 includes a nozzle 66 inserted through the sorting unit 14, a pipe member 67 connected to the nozzle 66, and an air flow sensor 68.

  The air flow sensor 68 is fixed to the outer surface side of the side frame 21 on one side while being covered with the sensor cover 69.

  The nozzle 66 is provided so as to penetrate the side frame 21 of the sorting unit 14, the suction port 66 a side of one end is disposed at a predetermined detection location, and the other end is a pipe member on the outer surface side of the side frame 21. 67.

  The pipe member 67 is configured to connect the other end side of the nozzle 66 and the suction port 68 a of the air flow sensor 68. An intermediate portion of the pipe member 68 is provided with a waste storage portion 67a that protrudes from a pipe path connecting the nozzle 66 and the airflow sensor 68 and becomes a waste storage. The opening on the other end side of the pipe constituting the waste reservoir 67a serves as an outlet 67b for taking out the waste accumulated in the waste reservoir 67a, and the outlet 67b is opened and closed by a cap member serving as a cap.

  Further, in the waste reservoir portion 67a, a pipe path extending from the nozzle 66 side to the waste reservoir portion 67a and a pipe path extending from the air flow sensor 68 side to the waste reservoir portion 67a are arranged in a downwardly inclined or hanging manner. It is comprised so that the sawdust in a pipe path may be guide | induced to the waste storage part 67a.

  The detection device 28 configured as described above is configured to detect an air flow change based on the wind speed in the sorting unit 14 with an air flow sensor 68 communicated with a nozzle 66 disposed at a predetermined location via a pipe member 67. The detection device 28 can detect the wind speed, air volume and / or wind pressure at a predetermined location.

  Specifically, the airflow sensor 68 includes an ambient temperature sensor that detects an ambient temperature, and a windward side that detects the temperature of air sucked from the suction port 68a in a detection wind path extending from the suction port 68a to the discharge port 68b. Built-in detection chip that incorporates a temperature sensor, a heater that heats the air sucked from the suction port 68a by a predetermined temperature above the ambient temperature, and a leeward temperature sensor disposed downstream of the heater And what detects an air volume based on the temperature difference detected by the windward side temperature sensor and the leeward side temperature sensor can be used. In the case of detecting the air volume by negative pressure, the pipe member 67 is connected so that the relationship between the suction port 68a and the discharge port 68b is reversed.

  According to the detection device 28 configured as described above, the processing is performed based on the correlation between the air volume detected in the vicinity of the suction port 66a of the nozzle 66 disposed on the rocking sorter 22 and the amount of processed material on the rocking sorter 22. The quantity can be detected indirectly. Specifically, the larger the amount of air detected by the airflow sensor 68, the stronger the air that passes through the fins 22a and the processed material, so the amount of processed material on the swing sorter 22 is smaller, and the smaller the detected air amount is. The amount of processed material on the rocking sorter 22 increases.

  In addition, since the waste storage portion 67 guides soot and the like on the swinging sorter 22 that has entered from the suction port of the nozzle 66, the path from the nozzle 66 to the airflow sensor 68 is clogged with soot and the like, and the air volume is increased. It is possible to prevent a situation in which the detection accuracy is reduced.

  Note that the detection device 28 that detects the amount of the processed material on the rocking sorter 22 (in the sorting unit 14) directly detects such as a layer thickness sensor that detects the layer thickness of the processed material on the rocking sorter 22. A sensor may be used.

  Next, an example of setting the rotational speed of the tang fan will be described with reference to FIG. 8A is a table showing the rotation speed of the red fan in the manual mode, and FIG. 8B is a table showing the rotation speed of the red fan in the automatic mode. (C) is the model figure which showed the timing which carries out the speed-up operation of a Kara fan.

  The rotational speed of the red fan 23 is set to a plurality of levels (seven levels R1 to R7 in the illustrated example) by the red dial 33 when the manual operation mode is switched by the switching operation tool 34 (the red dial 33). (See FIG. 8A). Incidentally, the opening degree of the fins 22a of the swinging sorter 22 is configured so that it can be operated in a plurality of stages by the sort dial 36 similarly to this.

  When the automatic operation mode is switched by the switching operation tool 34 (the red dial 33), the control unit 50 rotates the red fan 23 in accordance with the amount of processing detected by the sensors such as the detecting device 28. The number can be switched between a standard state, a fast state, and a fastest state.

  The automatic mode will be specifically described. In the standard state, the control unit 50 sets the rotation speed of the red fan 23 corresponding to the operation position where the red dial 33 is operated, and the detection device 28 swings the sorter. When the amount of processed material on 22 exceeds the fan acceleration value Q2, which is a predetermined threshold value, the speed is switched to a high speed state and the rotational speed of the red fan 23 is set to be at least the rotational speed at the standard state or higher. It is configured as follows.

  Further, the control unit 50 switches to the highest speed state when the amount of the processed material on the swing sorter 22 exceeds the fan acceleration value Q3, which is a predetermined threshold, by the detecting device 28, and The rotation speed is set to the maximum speed R7 (see FIG. 8B). In addition, when sensors, such as the detection apparatus 28 and the Kara transmission potentiometer 72, fail, the rotation speed of the Kara fan 23 is set to the minimum speed R1.

  In addition, when the fin switching operation tool 37 is used to switch to the fin automatic mode, the control unit 40 automatically opens the fin 22a according to the detected amount of processed material, as in the case of the Kara fan. It is configured to be adjustable.

  The fin automatic mode will be described. When the processing device amount on the swing sorter 22 exceeds the fin adjustment value Q1 which is a predetermined threshold value smaller than the fan acceleration value Q2, the swing sorter 22 is swung. The opening of the fin 22a of the body 22 is operated to increase. That is, the amount of sorting is increased by increasing the opening of the fins 22a of the swinging sorter 22 and increasing the amount of leakage before the amount of processed material increases and the amount of sorting air by the tang fan 23 is increased. (See FIG. 8C). Note that the preset threshold value is set so that Q1 <Q2 <Q3. Details of each automatic mode will be described later.

  As a result, the sorting power in the sorting unit 14 can be automatically adjusted in a plurality of stages according to the amount of the processed material on the rocking sorter 22, so that the sorting efficiency is improved with a relatively simple configuration. To do. Further, the rotational speed of the tang fan 23 is changed stepwise when the amount of processed material detected by the detection device 28 exceeds the predetermined threshold values Q2 and Q3. Compared with the one that continuously changes the rotational speed, the frequency of switching the rotational speed of the tang fan 23 can be suppressed. As a result, it is possible to reduce the burden on the tang fan 23 and make it difficult to break down.

  In addition, when the sensors such as the detection device 28 break down, the rotational speed of the red fan 23 is automatically set to the minimum, so that the rotational speed of the hot fan 23 is increased by erroneous detection of the failed sensors. Thus, it is possible to efficiently prevent the grains from being scattered with the sawdust and the like.

  Next, the configuration of the control unit will be described based on the descriptions in FIGS. 9 to 12.

  FIG. 9 is a block diagram illustrating a configuration of the control unit. On the input side of the control unit 50, the sorting dial 36 (sorting switching operation tool 37), the red pepper dial 33 (karatsu switching operation tool 34), the air flow sensor 68 in the detection device 28, and the swing sorting body. 22 fin opening potentiometer 71 that detects the fin opening of 22, a red transmission speed potentiometer 72 that detects the rotational speed of the hot fan 23, the clutch operating tool (power clutch) 73, and the rotational speed of the shaft in the transmission. A vehicle speed sensor 74 (vehicle speed detection means) for detecting the vehicle speed of the traveling machine body 2 by a rotating sensor or the like, and a hand switch for switching to the hand mode for driving the threshing device 6 in a state where the pre-processing unit 3 is stopped. 76 and a discharge auger turning potentiometer 77 for detecting the turning position of the discharge auger 32 are connected. The vehicle speed sensor 74 may be indirectly detected using a lever potentiometer or the like that detects an operation position of a main shift operation lever that operates a traveling shift.

  On the other hand, on the output side of the control unit 50, a fin drive motor 78 that opens and closes the fins 22a of the swing sorter 22, a yellow transmission motor 79 that operates the rotational speed of the red fan 23, and the respective states are notified to the operator. A liquid crystal monitor, which is an informing means 81, and a horn are connected.

  With this configuration, the controller 50 automatically controls fins to adjust the opening degree of the fins 22a of the swing sorter 22 and the rotational speed of the red fan 23 according to the detected amount of processing, Control and execution. This will be described below.

  FIG. 10 is a processing flowchart of threshing selection control executed by the control unit. When the threshing selection control is started, the control unit 50 proceeds to step S1. In step S1, it is detected whether or not an automatic state in which the selection amount is automatically adjusted is detected by the selection switching operation tool 37. If it is detected that the automatic state is detected, the process proceeds to step S2. In step S2, a fin automatic control subroutine process is executed. When the process ends, the process proceeds to step S3.

  In step S1, when the automatic state is not detected (manual state), the process proceeds to step S4. In step S4, a fin manual control subroutine process is executed. When the process ends, the process proceeds to step S3.

  In the fin manual control subroutine, the opening degree of the fin 22a is set based on the position of the president set by the sorting dial 36, regardless of the amount of the workpiece detected by the detection device 28.

  In step S3, it is detected whether or not the automatic changeover of the selection air volume (rotation speed of the red pepper fan) has been switched by the red pepper switching operation tool 34, and if it is detected that the automatic state is detected. The process proceeds to step S5. In step S5, the subroutine processing of the Kara fan automatic control is executed, and when the processing is finished, the threshing selection control is finished.

  If the automatic state is not detected in step S3, the process proceeds to step S6. In step S6, the subroutine processing of the Kara fan manual control is executed, and when the processing is finished, the threshing selection control is finished.

  In the subroutine of the red pepper fan manual control, the rotational speed of the red pepper fan 23 is set based on the operation position set by the red dial 33 regardless of the amount of processing detected by the detecting device 28 (see FIG. 8).

  FIG. 11 is a flowchart of the fin automatic control subroutine. When processing of the subroutine is started, the process proceeds to step S11. In step S11, the operation position of the selection dial 36 is detected, and the process proceeds to step S12. In step S12, the initial position of the fin 22a of the swinging sorter 22 and the open / close limit position (control range) are determined based on the detected operation position of the sorting dial 36, and then the process proceeds to step S13.

  In step S13, it is confirmed whether or not the cutting operation is being performed using the clutch operating tool 73 or the like. If it is detected that the cutting operation is being performed, the process proceeds to step S14. In step S14, it is confirmed whether or not the cutting operation is the start of cutting from the grain culm sensor 75 or the like. If it is detected that the cutting operation is not started, the process proceeds to step S15.

  In step S14, when it is detected that cutting is started, the process proceeds to step S16. In step S16, the fin drive motor 78 is operated to set the opening degree of the fin 22a to the initial opening degree, and then the process proceeds to step S15.

  In step S15, when it is detected that the amount of processed material detected by the airflow sensor 68 is equivalent to the fin adjustment value Q1 which is a predetermined threshold value, the process proceeds to step S17. In step S17, the opening of the fin 22a is maintained by stopping the operation of the fin operating motor 71, and then the execution of the subroutine processing is stopped. At this time, a predetermined range determined to be equivalent to the fin adjustment value Q1 may be set.

  If it is detected in step S15 that the amount of processed material detected by the airflow sensor 68 is smaller than the fin adjustment value Q1, which is a predetermined threshold value, the process proceeds to step S18. In step S18, by operating the fin drive motor 71, the fin 22a is closed to reduce the leakage amount of the processed material, and then the subroutine processing is stopped.

  In step S15, when it is detected that the amount of processed material detected by the airflow sensor 68 is larger than the fin adjustment value Q1, which is a predetermined threshold value, the process proceeds to step S19.

  In step S19, when it is detected that the amount of processed material detected by the airflow sensor 68 is smaller than the fin adjustment value Q3 which is a predetermined threshold value, the process proceeds to step S20. In step S20, the fin drive motor 71 is operated to open the fins 22a to increase the amount of leakage of the processed material, and then the subroutine processing is stopped.

  In step S19, when it is detected that the amount of processed material detected by the airflow sensor 68 is larger than the fin adjustment value Q3 which is a predetermined threshold value, the process proceeds to step S21. In step S21, the fin drive motor 71 is operated to maximize the opening of the fin 22a, and the process proceeds to step S22. In step S22, the notification means 81 notifies the operator that the fin opening is maximum, and then the subroutine processing is stopped.

  In step S13, if it is not detected by the culm sensor 75 that the cutting operation is being performed, the process proceeds to step S23. In step S23, the opening of the fin 22a is maintained by stopping the operation of the fin operating motor 71, and then the execution of the subroutine processing is stopped.

  According to this configuration, when switching to the fin automatic mode, the control unit 50 detects the amount of the processed material that is smaller than the processed amount Q2 whose rotational speed is increased by the automatic automatic mode and larger than the processed amount Q1. When detected by the device 28, the opening of the fin 22a is moved so as to increase. When the amount of the processed material exceeding the predetermined threshold value Q3 is detected (see FIG. 8), the opening degree of the fin 22a is maximized and the operator is notified that the fin 22a is set to the maximum opening degree. Is configured to do.

  FIG. 12 is a flowchart of a subroutine for automatic control of a tang fan. When processing of the subroutine is started, the process proceeds to step S31. In step S31, the operating position of the clutch operating tool 73 is confirmed. If the clutch operating tool 73 is operated to the cutting position, the process proceeds to step S32. In step S32, it is confirmed that the hand switch 76 is turned on or off. If the hand switch 76 is turned off, the process proceeds to step S33.

  In step S33, it is determined whether or not a sensor such as a detection device (air flow sensor 68) for detecting the amount of the processed material on the swing sorter 22 and a redshift potentiometer 72 for detecting the rotational speed of the redhead fan 23 has failed. If it is confirmed that there is no abnormality in these sensors, the process proceeds to step S34.

  In step S34, when it is detected that the amount of processed material detected by the airflow sensor 68 is larger than the fin adjustment value Q3 which is a predetermined threshold value, the process proceeds to step S35. In step S35, the rotary transmission motor 79 is driven to switch the rotational speed of the rotary fan 23 to the maximum speed state, and then the execution of the subroutine processing is stopped.

  In step S34, when it is detected that the amount of processed material detected by the airflow sensor 68 is smaller than the fin adjustment value Q3 which is a predetermined threshold value, the process proceeds to step S36.

  In step S36, when it is detected that the amount of processed material detected by the airflow sensor 68 is larger than the fan acceleration value Q2, which is a predetermined threshold value, the process proceeds to step S37. In step S37, the rotation speed change motor 71 is driven to switch the rotation speed of the rotation speed fan 23 to the high speed state, and then the subroutine processing is stopped.

  In step S36, when it is detected that the amount of processed material detected by the airflow sensor 68 is smaller than the fan acceleration value Q2 which is a predetermined threshold value, the process proceeds to step S38. In step S38, it is confirmed whether or not the vehicle speed detected by the vehicle speed sensor 74 is faster than a predetermined vehicle speed set in advance. If the detected vehicle speed is equal to or higher than the predetermined vehicle speed, the process proceeds to step S39.

  In step S39, it is confirmed by the fin opening potentiometer 71 whether or not the opening of the fin 22a is equal to or greater than a predetermined opening, and it is detected that the opening of the fin 22a is closed beyond the predetermined opening. If YES, go to step S40. In step S40, the rotary transmission motor 79 is driven to switch the rotational speed of the rotary fan 23 to the standard state, and then the subroutine processing is stopped.

  In step S39, if the fin opening potentiometer 71 detects that the opening of the fin 22a is equal to or larger than the predetermined opening, the process proceeds to step S37, and then the execution of the subroutine processing is stopped.

  In step S38, if the vehicle speed detected by the vehicle speed sensor 74 is slower than the predetermined vehicle speed, the process proceeds to step S41. In step S41, it is detected by the discharge auger turning potentiometer 77 whether the discharge auger 32 is in the discharge position or the storage position. If it is detected that the discharge auger 32 is in the discharge position, step S42 is performed. Proceed to In step S42, the rotary transmission motor 79 is driven to switch the rotational speed of the rotary fan 23 to the low speed state, and then the subroutine processing is stopped.

  In step S41, when the discharge auger turning potentiometer 77 detects that the discharge auger 32 is in the storage position, the process proceeds to step S40, and then the execution of the subroutine process is stopped.

  In step S33, if an abnormality is detected in the sensors such as the air flow sensor 68 and the rotary transmission potentiometer 72 that detects the rotational speed of the hot fan 23, the process proceeds to step S42. In step S42, the rotary transmission motor 79 is driven to switch the rotational speed of the rotary fan 23 to the low speed state, and then the subroutine processing is stopped. That is, when the rotation speed of the red pepper fan 23 cannot be controlled due to a failure of the sensors, the red pepper fan 23 is rotated at a low speed to prevent the grains from being scattered outside the apparatus.

  If the hand switch 76 is turned off in step S32, the process proceeds to step S42. In step S42, the rotary transmission motor 79 is driven to switch the rotational speed of the rotary fan 23 to the low speed state, and then the subroutine processing is stopped. That is, in the handling state, only the threshing device side is driven, and the supply of the harvested cereal meal is performed manually, so that the tang fan 23 rotates at a low speed.

  In step S31, when the clutch operating tool 73 is operated to the threshing position, the process proceeds to step S42. In step S42, the rotary transmission motor 79 is driven to switch the rotational speed of the rotary fan 23 to the low speed state, and then the subroutine processing is stopped. That is, when only the threshing device side is driven, there is no supply of the harvested cereal meal to the sorting section, so that the tang fan 23 rotates at a low speed.

  In step S31, when the clutch operating tool 73 is operated to the disengagement position, the process proceeds to step S43. In step S43, the driving of the rotary transmission motor 79 is stopped, the rotational speed of the hot fan 23 is maintained, and then the execution of the subroutine processing is stopped.

  According to the above, when the automatic operation mode is switched to the automatic operation mode, the control unit 50 increases the rotational speed of the internal combustion fan 23 step by step when the amount of the processed material detected by the detection device 28 exceeds the predetermined values Q2 and Q3. The speed is increased in two steps (in this embodiment). Even if the detection device 28 does not detect a value exceeding the predetermined threshold value Q2, the vehicle speed sensor 74 detects a vehicle speed that is equal to or higher than a predetermined speed, and opens the fin 22a. When it is detected that the fan is opened more than a predetermined value, the red fan 23 is set to a high speed state and the rotational speed is increased.

  As a result, even if the amount of processed material on the swing sorter 22 is not successfully detected by the detection device, the rotational speed of the red fan 23 is increased according to the vehicle speed detected by the vehicle speed sensor 74. Therefore, the adjustment of the sorting power when the amount of processed material increases is more stable.

22 Oscillating sorter 22a Fin 23 Kara fan (blower fan)
28 Detection device (detection sensor)
50 Control unit 71 Fin opening potentiometer (opening detection sensor)
74 Vehicle speed sensor (vehicle speed detection sensor)

Claims (4)

A swing sorter (22) that can adjust the amount of leakage of the processed material by opening and closing the fin (22a);
A blower fan (23) for raising a sorting wind for sorting the processed materials;
A detection sensor (28) for detecting the amount of processed material;
A control unit (50) for controlling the fin opening of the swing sorter (22) and the rotational speed of the blower fan (23);
The blower fan is configured to be capable of adjusting the air volume of the sorting air by changing the rotation speed,
When it is detected that the amount of processed material detected by the detection sensor (28) is within the fin adjustment value (Q1) that is a threshold having a predetermined range, the control unit (50) detects the fin (22a). ) And when the amount of processed material detected by the detection sensor (28) is larger than the fin adjustment value (Q1), the fin (22a) is opened to increase the leakage amount, and the detection sensor When the processed material amount detected by (28) is smaller than the fin adjustment value (Q1), the fin automatic control for reducing the leakage amount by closing the fin (22a) is executed,
When it is detected that the processing amount detected by the detection sensor (28) is larger than the fan acceleration value (Q2) which is a predetermined threshold, the control unit (50) detects the blower fan (23). When the rotational speed is increased and when it is detected that the amount of the workpiece detected by the detection sensor (28) is smaller than the fan acceleration value (Q2), the rotational speed of the blower fan (23) is increased. It is configured to be able to perform automatic control of non-performing fans.
The controller (50) sets the fan acceleration value (Q2) to be larger than the fin adjustment value (Q1) , and increases the air volume of the selected air of the blower fan (23) by the automatic fan control. A threshing device configured to increase the leakage amount by increasing the opening degree of the fin (22a) of the swing sorter by the fin automatic control .   The threshing apparatus according to claim 1, wherein the control unit (50) is configured to set at least two threshold values of the fan acceleration value and to increase the rotational speed of the blower fan (23) stepwise.   A vehicle speed detection sensor (74) for detecting the vehicle speed and an opening degree detection sensor (71) for detecting the opening degree of the fin (22a) are provided, and the control unit (50) is configured such that the vehicle speed is equal to or higher than a predetermined speed. And when it is detected that the opening degree of the fin (22a) is equal to or greater than a predetermined opening degree, even if the amount of processed material detected by the detection sensor (28) does not exceed the fan acceleration value, The threshing apparatus according to claim 1 or 2, wherein the rotational speed of the blower fan (23) is increased.   The said control part (50) fixed the rotation speed of the ventilation fan (23) on the lowest side, when the sensors used for control of the rotation speed of the said ventilation fan (23) fail. The threshing device according to any one of the above.

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