JP6588236B2 - Threshing device sorting control device - Google Patents

Description

  The present invention relates to a sorting control device for a threshing device (threshing unit) mounted on a general purpose combiner or the like, and more specifically, a sorting control device for automatically controlling the fin opening of a chaff sheave by detecting the amount of processed material on a rocking sorter. About.

  In general, a general-purpose combiner is provided with a control unit, a threshing unit, and a grain tank in a machine body that includes a traveling device, and a header unit that includes a scraping reel, a cutting blade, an auger, and a feeder in front of the machine body. Further, the threshing unit includes a handling chamber for feeding cereals conveyed by the feeder, and a sorting chamber provided below the handling chamber, and threshing the cereals with a handling cylinder and a receiving net provided in the handling room, The processed material leaked from the product is sorted into grains and dust by sieve sorting of a swinging sorter provided in the sorting chamber and wind sorting of a fan.

  The handling cylinder provided in the handling chamber includes a cylindrically formed rotor, a spiral screw attached to the outer periphery of the rotor, and a plurality of teeth handling teeth attached to the outer periphery of the screw at a predetermined pitch. While carrying the cereals thrown into the back with a screw, the cereals are rubbed against the receiving net with a screw or tooth-handling on the outer periphery of the rotor that rotates at high speed, and subjected to a degranulation process. For this reason, in the general-purpose combiner, a large amount of sawdust etc. is mixed with the processed material falling on the rocking sorter, and the amount of processed material in the sorting chamber increases as a whole.

  Therefore, in order to sort this large amount of processed material into grains and swarf with high accuracy, the amount of processed material on the rocking sorter is detected by a layer thickness sensor, and the fin opening of the chaff sheave is determined based on the detection result. It is known to perform selection control by automatic control, and to determine the start and end of cutting by a layer thickness sensor, and to start and end execution of selection control at an appropriate timing (see, for example, Patent Document 1). .)

  Furthermore, in the self-detaching combine, the sorting control is performed by controlling the fin opening of the chaff sheave according to the amount of waste conveyed by the waste chain, etc., and when the amount of waste decreases at the end of cutting, the chaff sheave The fin opening of the chaff sheave is kept in a constant open state when the end of cutting is detected, such as when the cereal sensor no longer detects cereals, in order to solve the inconvenience that a large number of third loss occurs due to the fins closing. It is known to reduce the third loss (see, for example, Patent Document 2).

Japanese Patent Laying-Open No. 2015-50948 JP-A-10-295167

  However, in the screening control device of the threshing device described in Patent Document 1, it is determined that the cutting is finished when it is detected by the layer thickness sensor that the state has changed from the state in which the processed object is present on the rocking sorter, Change the fin opening of the chaff sheave in small steps. In addition, when a predetermined time has elapsed from the end of cutting, the fin opening of the chaff sheave is controlled to the lower limit value to prevent the cutting rod from leaking into the spiral most at the end of cutting or turning.

  For this reason, in Patent Document 1, although the selection accuracy is improved because the cut grains are not mixed with the selected grain, if the layer thickness sensor no longer detects the processed material on the swinging sorter, the fin opening of the chaff sheave is increased. Since the fin is closed by controlling to the lower limit value, the second thing mixed with the grain and sawdust dropped on the second spiral is returned to the handling room or the swing sorter and re-sorted. At this time, the grain is prevented from leaking onto the first spiral and falls again onto the second spiral, and as a result, there is a possibility of continuing circulation in the threshing apparatus.

  Then, the grain (rice cake) is damaged by this unexpected circulation, and there is a possibility that it may become degranulated, torn, or crushed. In addition, if the processed material remains in the oscillating sorter for a long time due to circulation and is not wiped out, the sorting load will continue to occur, and when the mowing operation is finished as it is, grains remain in the threshing device, and finally The grain will not be recovered.

  Furthermore, closing the chaff sheave fin prevents the grain from leaking onto the first helix, and the grain is transferred to the end of the chaff sheave along with the sawdust remaining on the rocking sorter. As a result, the sorting wind cannot be removed from the gap between the fins and the sorting wind at the end of the chaff sheave is strengthened. As a result, the grain is discharged out of the machine by the sorting wind and there is a risk that the third loss will occur.

  On the other hand, the screening control device of the threshing device described in Patent Document 2 keeps the fin opening of the chaff sheave at a constant open state when the end of cutting is detected such as when the cereal sensor no longer detects cereal as described above. Therefore, the third loss can be reduced. However, in this case, since the culm sensor is attached to the reaping part, the culm is continuously supplied to the threshing device for a while after the culm sensor detects the end of cutting.

  For this reason, if the fin opening is kept constant at the time when the end of cutting is detected, the fins of the chaff sheave are opened more than necessary, so that the swarf is likely to leak together with the grains from the gap between the fins of the chaff sheave. Moreover, as a result of weakening the sorting wind by opening the fins, grains, chopped rice cakes, etc. leak on the spiral, and the sorting accuracy may be reduced. In addition, in this case, the selection flow sensor is provided to correct the fin opening, but this correction is ignored at the end of cutting, so the timing to make the fin opening constant open state is appropriate. I can't control it.

  Therefore, in the present invention, when performing sorting control of the threshing apparatus, it is based on the fact that the third loss is not generated in large quantities, and when the processing object on the rocking sorter is reduced while maintaining high sorting accuracy. To provide a sorting control device for a threshing device, which can prevent damage to the grain of the cereal, and can remove the sorting load at an early stage and collect the grain from the threshing device in a grain tank or the like. Is an issue.

In order to solve the above-described problems, the present invention firstly includes a handling chamber provided with a handling cylinder and a receiving net, and a sorting chamber provided with a swing sorting body, a fan, a first spiral, and a second spiral provided below the handling chamber. A second reduction device for reducing the second object collected by the second spiral to the handling chamber or the sorting chamber, and a sorting control device for controlling the fin opening of the chaff sheave of the swinging sorter, the sorting control device. Automatically changes the fin opening of the chaff sheave based on the amount of processing on the rocking sorter detected by the amount of processing detecting means, and the processing on the rocking sorter detected by the processing amount detecting means. objects becomes less than a predetermined amount, and when the fin angle detected by the fin angle potentiometer is in a state where a predetermined closed state, the control to the fin to a predetermined open state waiting for the predetermined waiting time It is characterized by doing.

  According to the present invention, secondly, the processing amount detection means is provided above the front end thickness portion of the chaff sheave or above the end portion of the feed pan provided upstream of the chaff sheave and above the end portion of the chaff sheave. And the sorting control device detects that the workpiece thickness is less than or equal to a predetermined amount by the front and rear layer thickness sensors, and when the fin is in a predetermined closed state, It is characterized by controlling to open state.

  In addition, according to the present invention, thirdly, the sorting control device controls the fins to be in a predetermined open state when the processed material on the swinging sorter is below a predetermined amount and the fins are in a predetermined closed state. Then, the fins are controlled to be in a predetermined closed state, or are controlled to repeat the open state and the closed state.

  In addition, according to the fourth aspect of the present invention, when the processed material on the swinging sorter is less than a predetermined amount and the fin is in a predetermined closed state, the sorting control device waits for a predetermined waiting time and removes the fin from the predetermined amount. Control is performed so as to be in an open state, or control is performed so as to be in a predetermined open state, and then control is performed so that a fin is in a predetermined closed state after a predetermined waiting time.

  And, according to the fifth aspect of the present invention, when the processed product on the rocking sorter becomes a predetermined amount or less and the fin is in a predetermined closed state, the sorting control device determines whether or not there is a work on the rocking sorter. The maximum opening degree of the fin is changed to control the fin to be in an open state.

  According to the screening control device of the threshing apparatus of the present invention, the fin opening of the chaff sheave is automatically changed based on the processed material amount on the rocking sorter detected by the processed material amount detecting means. If there is no supply of fresh materials and there is less processed material on the rocking sorter, the fins of the chaff sheave are closed, preventing the leakage of slag into the first spiral, so that the sorted grains Mixing of broken pieces and the like is prevented, and the sorting accuracy is improved.

Further, the processing of the oscillating sorting member to be detected by the processing quantity detection means is below a predetermined amount, and the fin opening detected by the fin angle potentiometer is in a state where a predetermined closed state, Waiting for a predetermined waiting time and opening the fins in a predetermined open state, the grain on the chaff sheave leaks into the first spiral, thus preventing the recirculation of the second reduced grain on the chaff sheave, thereby While preventing damage to the grain, it can be recovered in a Glen tank or the like without leaving any grain. In addition, since the processed material on the rocking sorter can be wiped out, the sorting load can be removed at an early stage, and the rocking sorter can be kept clean in preparation for cutting in the next step.

Furthermore, the timing for opening the fins in this case is based on the amount of processed material on the rocking sorter and the opening degree of the fins, and is performed in a state where there is almost no processed material on the rocking sorter and there are few cuts. Therefore, the selected grains are less likely to be mixed with cut straw and the like, so that the selection accuracy can be kept high.

  When the fins are kept closed at the end of cutting, the grain is prevented from leaking on the spiral, and the grains are transferred to the end of the chaff sheave along with the sawdust remaining on the rocking sorter. By reducing the gap between the fins, the sorting wind at the end of the chaff sheave is strengthened, and the grain is easily discharged outside the machine by the sorting wind. However, since the present invention changes the fin from the closed state to the open state at the end of cutting, the third loss can be reduced.

  Further, according to the screening control device for a threshing apparatus of the present invention, the processing amount detection means includes a front layer thickness sensor provided above the start end portion of the chaff sheave or upstream of the end portion of the feed pan provided upstream of the chaff sheave, and the chaff sheave. And the sorting control device detects that the front and rear layer thickness sensors detect that the amount of processed material is less than or equal to a predetermined amount, and the fins are in a predetermined closed state. In this case, since the fins are controlled to be in a predetermined open state, the amount of processed material on the chaff sheave can be accurately captured by the front and rear layer thickness sensors, and appropriate selection control according to the amount of processed material can be performed. In addition, the sorting accuracy can be maintained higher without mistaken timing of opening the fin at the end of cutting.

  Furthermore, according to the screening control device of the threshing device of the present invention, when the processed material on the rocking sorter becomes a predetermined amount or less and the fin is in a predetermined closed state, the fin is controlled to be in a predetermined open state. After that, the fin is controlled so as to be in a predetermined closed state, or the open state and the closed state are controlled repeatedly. Mixing can be reduced. In addition, by repeatedly opening and closing the fins, the second product can be reliably prevented from being recirculated, and can be recovered in a grain tank or the like without leaving any grain damage.

  Further, according to the sorting control device of the threshing device of the present invention, when the processed material on the rocking sorter becomes a predetermined amount or less and the fin is in a predetermined closed state, the fin is moved to a predetermined waiting time after a predetermined waiting time. Since the fin is controlled to be in the open state, or after the control to be in the predetermined open state, the fin is controlled to be in the predetermined closed state with a predetermined waiting time, so that the fin is closed for a while. The closed state can be maintained, and cuts and the like on the rocking sorter can be discharged out of the machine as early as possible to reduce the amount of processed material. In addition, the fins are kept open for a while and the second reduced grains are surely leaked into the spiral so that the processed material on the rocking sorter can be quickly cleared. Can do.

  And according to the sorting control device of the threshing device of the present invention, when the processed material on the rocking sorter becomes a predetermined amount or less and the fin is in a predetermined closed state, depending on the presence or absence of the treated material on the rocking sorter. Since the maximum opening degree of the fin is changed and the fin is controlled to be in the open state, if the processed material remains, it prevents the fins from opening too much as the waste remains. If there is no, only the second reduced grain remains on the chaff sheave, so the grain can be leaked at once in the spiral, so the processed material on the rocking sorter while maintaining the sorting accuracy Can be wiped out.

It is a whole side view of a general purpose combine. It is a side view of a threshing part. It is a perspective view of a rocking sorter. It is a perspective view of a layer thickness sensor. It is an effect | action figure of a layer thickness sensor. It is a cross-sectional view of the threshing part which shows the attachment position of a layer thickness sensor. It is a top view of the rocking | swiveling selection body which shows the arrangement position of a layer thickness sensor. It is a top view of a control part. It is a block diagram of a control apparatus. It is a flowchart of fin opening degree control. It is a flowchart of fin manual control. It is a flowchart of fin automatic control. It is a flowchart of cutting end control. It is an operation | movement table | surface which calculates a target fin opening degree based on a layer thickness sensor. It is a flowchart of the 2nd cutting end control.

  Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the general-purpose combiner includes a left and right crawler type traveling device 1 and a rectangular frame-shaped body frame 3 provided above the track frame 2 of the traveling device 1, and the left and right sides of the body frame 3 The traveling apparatus 1 is attached to be movable up and down by a hydraulic cylinder for posture control (not shown). Further, a threshing unit (threshing device) 4 that performs threshing and sorting of crops is provided on the left side in the advancing direction of the machine body frame 3, and a steering unit 5 and a grain tank 6 for storing grains are provided on the right and left sides. .

  Further, in front of the threshing unit 4 and the control unit 5, a header unit (reaping unit) 7 for harvesting and transporting the crop to the threshing unit 4 is provided. In addition, the driving | running | working part comprised with an engine, a radiator, an air cleaner etc. from the downward direction of the control part 5 to the front of the Glen tank 6 is provided, and an engine consists of the crawler type traveling apparatus 1, the threshing part 4, the Glen tank 6, the header part. It becomes a power source for driving 7 etc.

  Here, the configuration of each part will be described. The header portion 7 provided on the front side of the machine body is configured by integrally connecting a feeder house 8, an auger frame 9, and a reel frame 10. Among these, the auger frame 9 is provided with a platform 11 formed by curving an iron plate. On the platform 11, an auger extending in the left-right direction is provided with a drum 12b having a spiral 12a and fingers 12c projecting on the outer periphery of the drum 12b. 12 (platform auger) is pivoted so as to be rotationally driven. In addition, when cutting soybeans, the rear side of the platform 11 is made open so that soil and dust can be discharged out of the machine.

  Further, left and right dividers 13 and reciprocating cutting blades 14 are provided at the front portion of the auger frame 9. Further, in the feeder house 8 formed in a box frame shape, the left and right transport chains 18 are wound between the rear drive sprocket 16 attached to the drive shaft 15 and the front drum 17, and the left and right transport chains 18. A feeder F is provided in which a plurality of slats 19 are horizontally mounted with a predetermined interval therebetween. When cutting soybeans, the bottom plate of the feeder house 8 is made open so that soil and dust can be discharged out of the machine.

  Further, the reel frame 10 is provided with a take-up reel R, and the take-up reel R is a polygonal shaft in a side view that rotates integrally with the drive shaft that is rotatably supported at the left and right ends of the reel frame 10. And left and right rotating supports 20 having a shape (hexagonal shape in the embodiment). Further, a plurality of tine mounting rods 21 extending in the left-right direction are rotatably installed at the apexes of the left and right rotation supports 20, and spring-type tines 22 are suspended at predetermined intervals on each tine mounting rod 21. It is attached to the shape.

  Further, on one lateral outer side of the rotation support body 20, there is provided a posture holding rotator 23 that rotates around an axis that is deviated from the axis of the drive shaft, and is provided at each vertex of the posture holding rotator 23. By connecting the pivot support 24 and one side end of the tine attachment rod 21 via a link, the posture is maintained so that the tine 22 always faces downward regardless of the rotation of the rotary support 20.

  The reel frame 10 has a rear part pivotally supported at the front ends of left and right swing arms 25 pivotally supported on the upper part of the auger frame 9 and has one end attached to the feeder house 8. By operating the electric hydraulic cylinder 26 to extend and contract, the take-up reel R can be adjusted forward and backward with respect to the auger frame 9 via the swing arm 25. Further, an elevating hydraulic cylinder 27 is provided between the middle of the reel frame 10 and the auger frame 9, and the take-up reel R is moved up and down with respect to the auger frame 9 by expanding and contracting the hydraulic cylinder 27. The height can be adjusted.

  The header portion 7 configured as described above is rotatably supported via a holder on the front frame of the threshing portion 4 erected on the front portion of the body frame 3, and the feeder house 8 and the body frame 3. The posture can be changed between a state in which the front side of the header portion 7 is lowered and a state in which the header portion 7 is raised by an expansion and contraction operation of the lifting hydraulic cylinder 28 provided between the two. Note that the drive shaft 15 of the feeder F is provided concentrically with the rotation center of the header portion 7, and the take-up reel R, the cutting blade 14, the auger 12, and the feeder F of the header portion 7 are engine power. Driven by.

  Therefore, when the aircraft is run with the header portion 7 lowered, the planted grain culm (crop) in the field is divided into a cutting target and a non-cutting target by the left and right dividers 13, of which the cutting target The planted cereal meal is cut by the cutting blade 14 while being scraped into the platform 11 by the scraping reel R. In addition, the cereals scraped into the platform 11 are laterally fed to the front of the feeder house 8 by the platform auger 12, and the cereals laterally fed to the front of the feeder house 8 are further fed by the feeder F to the feeder house 8. The whole of the harvested cereals are put into the threshing unit 4 while passing through the lower part of the feeder house 8 while being locked by the slats 19 attached to the conveying chain 18.

  In the header portion 7, a headlamp 29 is attached to the front end of the reel frame 10, and a direction indicator 30 and a rearview mirror 31 are attached to a stay 32 erected from the auger frame 9. Reference numeral 33 denotes a cover that covers the side of the platform 11, and reference numeral 34 denotes a cover that covers the transmission portion of the take-up reel R. Further, a ladder 35 is erected from the body frame 3 on the side of the rear side of the feeder house 8.

  Next, the threshing unit 4 will be described. The threshing unit 4 includes a rotor cover 36 that can be opened and closed upward via a hinge, a rotor side cover 37 that can be opened and closed laterally, and a detachable threshing cover (front cover 38, The rear cover 39) covers the upper and left sides, and the rear is covered with a dust cover 40 that can be opened and closed freely. Further, the threshing unit 4 includes a handling chamber 41 into which the cereals conveyed by the feeder F are input, and a sorting chamber 42 formed below the handling chamber 41.

  Among these, a handling cylinder 43 that rotates around the longitudinal axis of the machine body is pivoted in the handling chamber 41 as shown in FIG. 2, and this handling cylinder 43 has a conical front part and a rear part. A rotor 44 formed in a cylindrical shape, a spiral screw 45 attached to the outer periphery of the rotor 44, a plurality of cemented carbide teeth 46 attached to the outer periphery of the screw 45 at a predetermined pitch, and an outer periphery of the end portion of the rotor 44 A dust sending body 47 is provided. In addition, an arc-shaped receiving net 49 is provided below the handling cylinder 43 so as to cover the lower periphery of the handling cylinder 43 following the inlet receiving plate 48 that receives the cereals conveyed by the feeder F. Yes.

  Then, the cereals thrown into the handling chamber 41 are conveyed while being disentangled to the rear side of the machine body by the dust feeding valve 50 pivotally attached to the screw 45 and the rotor cover 36, and also by the screw 45 and the carbide handling teeth 46. While rotating around the outer periphery of the rotor 44, it is rubbed against the receiving mesh 49 and the grain removal process is performed.

  On the other hand, as shown in FIGS. 2 and 3, the sorting chamber 42 formed on the lower side of the handling chamber 41 is provided with a swinging sorter 51. The swinging mechanism is configured to swing back and forth, and the swing sorting body 51 swings back and forth to sort the processed material. In addition, a tang fan 52 and a turbo fan 53 that generate sorting air directed toward the rocking sorter 51 are provided below the rocking sorter 51, and the processed material is separated by the sorting wind generated by the fans 52 and 53. Wind selection is performed in the swing sorter 51.

  The swing sorter 51 has an upper and lower two-stage structure, and includes an upper feed pan 54, a chaff sheave 55, and a strollac 56, and a lower glenshave 57, a chaff sheave 58, and a strollac 59. The feed pan 54 is a corrugated transfer plate that receives a processed material that has leaked and dropped from the receiving net 49 and moves it backward. The chaff sheaves 55 and 58 are each composed of a plurality of fins arranged in parallel in the front-rear direction, and the fins 55a of the upper chaff sheave 55 are configured such that the opening degree can be changed by the fin control motor 60, and the lower The fins 58a of the chaff sheave 58 are fixed at a predetermined opening degree.

  Then, the processed material that has reached the rear end of the feed pan 54 is sent to the upper chaff sheave 55 and subjected to leakage selection while being selected by the selection air of the tang fan 52, and further, a grain sieve comprising a predetermined mesh. The grain that has leaked 57 flows down to the first flow plate 61 and falls onto the first spiral 62 as the first thing. In addition, the processed product transferred onto the upper stroller 56, the lower chaff sheave 58 and the stroller 59 is selected by the sorting air of the tang fan 52 and the turbo fan 53, and the second thing leaking them. Is guided down by the second flow plate 63 and falls onto the second spiral 64.

  Further, dust such as swarf transferred to the end of the strollers 56 and 59 is discharged out of the machine from a discharge port 65 provided in the rear part of the machine body, together with the waste conveyed to the rear end part of the receiving net 49. The On the upper feed pan 54 and chaff sheave 55 of the swing sorter 51, there are provided four plates 66a, 66b, 66c, 66d on both the left and right sides, and these plates 66a, 66b, 66c, 66d. Is arranged so as to be inclined closer to the center of the left and right of the swinging sorter 51 toward the rear end side, and a processing object that tends to stay near the left and right ends of the swinging sorter 51 is brought closer to the center side, Are dispersed on the rocking sorter 51 so as to form a uniform layer.

  In addition, the grain horizontally fed by the first spiral 62 is fed into the Glen tank 6 by the bucket conveyor 67 and the upper horizontal spiral 68, and the second thing horizontally fed by the second spiral 64 is The slat conveyor 69 and the reduction horizontal spiral 70 constituting the number reduction device N are reduced to the front part of the handling chamber 41, and the degranulation process is performed again, or the lid 72 provided in the middle of the reduction horizontal spiral cylinder 71 is opened. (Refer to FIG. 7) The second item can be dropped again onto the feed pan 54 to perform the re-sorting process. In addition, the grain tank 6 can discharge | emit a grain in the container loaded in the light truck etc. by the discharge auger 73 provided in the rear-end part of the body.

  Next, the sorting control apparatus for the threshing apparatus of the present invention will be described. That is, the selection control device automatically detects the amount of the processed material on the swinging sorter 51 and automatically controls the fin opening of the chaff sheave 55. The layer thickness sensor S serves as a sensor for detecting the amount of the processed matter on the swinging sorter 51. Is provided. Here, as shown in FIGS. 5 and 6, the layer thickness sensor S includes a potentiometer (rotary potentiometer) 74 that detects a rotation angle and converts it into a voltage, and an operating piece 75 attached to the rotation shaft 74a. The actuating piece 75 is bent at a substantially right angle from a base portion attached to the rotating shaft 74a, and forms a warped contact surface having its distal end portion bent in the left-right direction and wide toward the rear. Further, the layer thickness sensor S includes a bracket 76 and a protective cover 77 to which the layer thickness sensor S is attached.

  Further, the protective cover 77 is provided with a stopper 78 for setting the detection initial position of the operating piece 75. That is, the stopper 78 constituted by a torsion coil spring is prevented from rotating backward by locking the tip of the stopper 78 to the protrusion of the bracket 76, and the operating piece 75 contacts the stopper 78 to detect the initial state. Position. When the stopper 78 is removed from the protruding portion of the bracket 76, the stopper 78 is rotated by itself to lift the operating piece 75 upward, thereby changing the operating piece 75 from the detection posture to the retracted (retracted) posture.

  Then, as shown in FIGS. 6 and 7, the layer thickness sensor S is configured so that the working piece 75 contacts the processed material transferred backward on the swinging sorter 51 of the threshing unit 4 and rotates. It is provided below the receiving mesh 49 so as to detect the presence or absence of the processed object or the amount (layer thickness) of the processed object depending on the angle. More specifically, the lower frame 79 to which the receiving net 49 is attached is provided from the start end to the end of the swing sorting body 51 and is positioned above the center of the swing sorting body 51 in the left-right direction. Therefore, the layer thickness sensor S is attached to the lower frame 79, and a dedicated stay for attaching the layer thickness sensor S is unnecessary.

  Further, two layer thickness sensors S are provided on the swinging sorter 51, and among these, the front sensor 80 is closer to the front of the upper chaff sheave 55 provided behind the feed pan 54, and the rear sensor 81. Are provided near the rear part of the chaff sheave 55. The front layer thickness sensor 80 may be provided near the rear part of the feed pan 54. Further, when the fin opening of the chaff sheave 55 is manually controlled, or when crops other than rice and wheat are harvested, automatic control is not used. In this case, the layer thickness sensor S is not necessary, and rather hinders sorting. Therefore, the operating pieces 75 of the layer thickness sensors 80 and 81 are changed from the detection posture to the retracted (retracted) posture.

  Next, a drive mechanism for changing the opening degree of the fin 55a of the chaff sheave 55 will be described. As shown in FIG. 3, each fin 55a of the upper chaff sheave 55 is supported on the left and right side plates 51a of the swinging sorter 51 so as to be rotatable around the upper end, and the lower end is connected to each of the plurality of fins 55a with a plate. Then, it is divided into four fin groups 55A, 55B, 55C, and 55D. An arm 55b is attached to one fin 55a of each fin group, and rollers 82A, 82B, 82C, and 82D are attached to the lower end of the arm 55b.

  On the other hand, the fin control motor 60 and the cam plate 83 are attached to the side plate 51 a on one side of the swing sorter 51, and the pinion gear 60 a of the fin control motor 60 is engaged with the rack gear portion 83 a of the cam plate 83. Further, cam portions 83A, 83B, 83C, 83D are formed on the upper surface of the cam plate 83, and when the fin control motor 60 is driven to move the cam plate 83 forward and backward, the cam portion 83 is rotated. The rollers 82A, 82B, 82C, and 82D rotate the arms 55b to change the opening degree for each of the plurality of fins 55a of the fin groups 55A, 55B, 55C, and 55D.

  When the cam plate 83 is moved back and forth in the front-rear direction, the fins 55a are opened in the order from the rear fin group to the front fin group, and conversely, the fins 55a are closed in the order from the front fin group to the rear fin group. Are formed with cam portions 83A, 83B, 83C, 83D. The side plate 51a of the swing sorter 51 is provided with a potentiometer 84 that detects the fin opening based on the back and forth movement of the cam plate 83.

  Further, as shown in FIG. 8, the control unit 5 is provided with a switch, a dial, and the like related to the control of the sorting control device. In other words, the side panel 86 standing on the side of the seat 85 of the control unit 5 is provided with a traveling speed change lever 87 protruding from the guide groove, and the base speed change position is detected at the base of the traveling speed change lever 87. A lever potentiometer 88 is provided (not shown). The switch panel 89 behind the travel shift lever 87 includes a power clutch switch 90 for connecting / disconnecting the working machine (threshing) clutch and the mowing clutch, a crop switching dial 91 for selecting the mowing crop, and an automatic switch for turning on / off the sorting automatic control. In addition, a selection dial 92 is provided for setting the target fin opening for manual control and for setting the minimum and maximum opening of the fin for automatic control.

  And the thickness control S provided in the threshing unit 4 and the selection control based on command means such as each switch and dial provided in the control unit 5 are performed by an electronic control unit (Electronic Control Unit) mainly composed of a microcomputer or the like, On the input side of the electronic control unit ECU, as shown in FIG. 9, a power clutch switch 90 constituting a threshing clutch operation switch, a selection dial 92, a front layer thickness sensor 80, a rear layer thickness sensor 81, a fin opening degree A potentiometer 84, a crop switching dial 91, a main transmission lever potentiometer 88, a return path detection sensor 93, an engine load detection sensor 94, and the like are connected, and a fin control motor 60 is connected to the output side.

  Further, fin opening control performed by the electronic control unit ECU will be described with reference to the flowchart of FIG. 10. First, the electronic control unit ECU determines whether the threshing clutch is on or off (S1), and the threshing clutch is off. Will return without doing anything. On the other hand, in the case of ON, it is determined whether the sorting automatic switch 92 is ON / OFF (S2). If the switch 92 is ON, it is determined whether the crop to be automatically controlled by the crop switching dial 91 is a cutting target (S3). If the crop is automatically controlled (rice or wheat), the automatic fin control is performed. A subroutine is executed (S4). However, if the automatic sorting switch 92 is OFF or the crop is not automatically controlled (other than rice and wheat), a fin manual control subroutine is executed (S5).

  In the fin manual control, as shown in the flowchart of FIG. 11, first, the target fin opening “K1” is calculated based on the dial value of the selection dial 92 (S1), and then the target fin opening K1 and the fin opening potentiometer. The actual (current) fin opening degree K obtained from 84 is compared (S2). If the comparison result is “K = K1”, the driving of the fin control motor 60 is stopped (S3), and if “K <K1”, the fin control motor 60 is driven so that the fin is opened. However, if “K> K1”, the fin control motor 60 is driven so that the fins are closed (S5). Therefore, in the manual control, the fin fins 55a are controlled so that the opening degree of the fins 55a becomes the opening degree specified by the selection dial 92.

  In the fin automatic control, as shown in the flowchart of FIG. 12, first, it is determined from the detection value of the front layer thickness sensor 80 whether the layer thickness is equal to or greater than a predetermined value (S1), and the layer thickness is equal to or greater than the predetermined value. If there is, the cutting flag is set (1) (S2). If the layer thickness is less than the predetermined value, it is determined from the detection value of the rear layer thickness sensor 81 whether the layer thickness is equal to or greater than a predetermined value (S3). A cutting flag is set (1) (S2). When the cutting flag is set, the target fin opening “K2” is calculated based on the detection values of the front and rear layer thickness sensors according to the operation table of FIG. 14 (S4), and the target fin opening K2 and the fins are calculated. The actual (current) fin opening K obtained from the opening potentiometer 84 is compared (S5).

  Further, when the comparison result is “K = K2”, the driving of the fin control motor 60 is stopped (S6), and when “K <K2”, the fin control motor 60 is driven so that the fins are opened. At the same time, it waits until the interval timer (T1) counts up (S7, S8). When “K> K2”, the fin control motor 60 is driven so as to close the fin and the interval timer (T2) counts up. (S9, S10), and then returns.

  In step S3, when the layer thickness detected by the rear layer thickness sensor 81 is less than the predetermined value set in advance, the state of the cutting flag is determined (S11), and the cutting flag is set. If not (0), the process proceeds to step S4. If the cutting flag is set (1), it is determined whether the fin opening K obtained from the fin opening fin opening potentiometer 84 is the lowest rank (S12), and is not the lowest rank (≠). If so, the process proceeds to step S4.

  If the rank is the lowest rank (=), rice / wheat is determined based on the dial value of the crop switching dial 91 (S13). If the harvested crop is rice, a cutting end control subroutine is executed. (S14) In the case of wheat, it returns without doing anything. Next, the cutting end control will be described. As shown in the flowchart of FIG. 13, the cutting end control first determines whether the standby timer (T3) has been counted (S1), and if it has been counted (YES). The fin control motor 60 is opened and driven to set the fin opening to a predetermined opening position (S2).

  Next, it is determined whether the fixed timer (T4) has been counted (S3), and if it has been counted (YES), the fin control motor 60 is closed and driven to set the fin opening to the lowest rank (S4). Then, return. If the standby timer (T3) or the fixed timer (T4) has not been counted (NO), the process returns without doing anything.

  Furthermore, the operation table (FIG. 14) for calculating the target fin opening “K2” based on the detection values of the front and rear layer thickness sensors 80 and 81 described above will be described. First, the front and rear layer thickness sensors 80 are described. 81 between the initial detection position of the potentiometer 74 and the maximum position of the effective electrical angle is five for the front layer thickness sensor 80 and four for the rear layer thickness sensor 81. (See FIG. 5), if the layer thickness of the processed product is the front layer thickness sensor 80, it is regarded as being maximum, large, medium, small, or nothing, and the rear layer thickness sensor 81 If there is, it is considered as large, medium, small, or nothing. Then, based on the combination of the detection states of the processed materials of the front and rear layer thickness sensors, the fin opening / closing command is issued in three parts: an opening operation, a current state maintenance, and a closing operation.

  That is, when the rear layer thickness sensor 81 is detected to be large, the opening operation of the fin 55a is instructed regardless of the detection result of the front layer thickness sensor 80. The opening operation of the fin 55a is similarly instructed except for maintaining the current state when the sensor 80 is absent. In addition, when it is small, when the front layer thickness sensor 80 detects maximum or large, an opening operation is instructed, and when middle or small is detected, the current state is instructed and none is detected. When instructed, the closing operation is instructed. Further, when the front layer thickness sensor 80 detects the maximum, the opening operation is instructed. When the front layer thickness sensor 80 detects the maximum, the maintenance of the current state is instructed. When detecting, the closing operation is instructed.

  The fin automatic control or manual control described above will be described based on an actual example. First, the fin 55a is opened and closed by driving the fin control motor 60 and moving the cam plate 83 forward and backward. The amount of movement of the cam plate 83 from the state in which all of the groups 55A, 55B, 55C, and 55D are closed (fully closed) to the state in which they are all opened (fully opened) is divided into, for example, x equally to rank the fin opening degrees. Do. Therefore, when the rank is 0, it is fully closed, and when the rank is x-1, the opening of the fin 55a is increased each time the rank is increased one by one.

  Further, since the cam plate 83 position corresponding to the fin opening rank is determined in this way, the current rank of the fin 55a, that is, the fin, is determined based on the detection value of the fin opening potentiometer 84 that detects the position of the cam plate 83. The opening degree of 55a can be known. In the automatic fin control, the minimum opening rank and the maximum opening rank are set based on the dial value of the sorting dial 92, and the fin 55a exceeding this rank is not opened or closed. The maximum opening rank may not be based on the dial value of the selection dial 92 but may be set to be fully open (opening rank x-1).

  Further, in the automatic fin control, when the front or rear layer thickness sensors 80 and 81 enter a predetermined value, for example, a region of “small” or more that is divided, it is determined that cutting is started, and a cutting flag is set ( 1) Do it. This is to prevent cutting end control before starting the cutting operation, and the cutting flag is reset (0) in the initial set performed first after the electronic control unit ECU is activated.

  Therefore, in the cutting end control, after the actual cutting is started, both the front and rear layer thickness sensors 80 and 81 enter a region of less than a predetermined value, for example, the divided “no”, and the fin opening is the lowest. It is executed only when the rank is changed, that is, when the fin opening potentiometer 84 detects the minimum opening rank and the crop switching dial 91 indicates that the harvested crop is rice. . Note that the “no” area of the front and rear layer thickness sensors 80 and 81 does not necessarily indicate the same area (detection angle) detected by the potentiometer 74. Set to an appropriate area. Further, in the harvesting of wheat, since the generation of swarf is less than that in the case of rice and the amount of reduction of the second crop is also small, control at the end of cutting is not particularly necessary and not performed.

  Further, in the fin automatic control, the target fin opening “K2” is calculated by the operation table of FIG. 14 based on the detection values of the front and rear layer thickness sensors 80 and 81. Here, the front and rear layer thicknesses are calculated. When an opening operation is instructed by a combination of detection values of the sensors 80 and 81, a rank obtained by adding one rank to the current fin opening rank detected by the fin opening potentiometer 84 is given to the target fin opening “K2”. . When instructed to maintain the current state, the current fin opening rank detected by the fin opening potentiometer 84 is given to the target fin opening “K2”. When the closing operation is instructed, a rank obtained by subtracting one rank from the current fin opening rank detected by the fin opening potentiometer 84 is given to the target fin opening “K2”.

  Furthermore, when the target fin opening “K2” is calculated as described above, the fin control motor 60 compares the target fin opening K2 with the actual (current) fin opening K obtained from the fin opening potentiometer 84. In this comparison, the target fin opening rank is compared with the current fin opening rank. The interval timers T1 and T2 used when the fin control motor 60 is driven to open and close are time until the fin opening motor is opened and closed and the fin opening rank reaches the target fin opening rank. Or it is set as the time after reaching the target fin opening rank and the change of the fin opening being reflected in the change of the processing amount.

  If the operating speed of the fin control motor 60 is made faster than when the fin 55a is closed to increase the selection accuracy, the interval timers T1 and T2 satisfy T1 <T2. In addition, when the automatic control described above is performed, the opening / closing control of the fins is aimed so that the detection value of the rear layer thickness sensor 81 is in the “small” region, and the front side from the rear side fin group. Since the fins 55a open in the order of the fin groups, the entire surface of the chaff sheave 55 is used for efficient sorting.

  On the other hand, when the cutting end control is executed while satisfying the above-described conditions, the waiting mimer T3 waits for y1 seconds to drive the fin control motor 60 and, for example, moves the fin 55a to the maximum opening rank (x-1). At the same time that the fin control motor 60 is driven, the fin control motor 60 is driven after waiting for y2 seconds by the fixed timer T4 to close the fin 55a to the lowest opening rank. When y3 seconds have passed since the fin control motor 60 closed the fin 55a, the fin 55a is opened again to the maximum opening rank, and thereafter the closing operation and the opening operation are repeated in a cycle of (y2 + y3) seconds. 55a is opened and closed.

  Therefore, when new cereals are not put into the handling chamber 41 and the amount of processed material on the chaff sheave 55 is reduced, the fins 55a are gradually closed to the lowest opening rank, and finally the cutting end control is started. Further, when the cutting end control is started, the opening degree of the fin 55a is left as it is for a while (y1 second), and during that time, cuttings and the like are discharged out of the machine, and a large amount of grain is placed on the chaff sheave 55. Wait until only the second reduced product is contained. Then, the fin 55a is opened for a while (y2 seconds), the processed material on the chaff sheave 55 is dropped onto the first spiral 62, and the grains are collected in the glen tank 6.

  Therefore, it is prevented as much as possible that cut straw is mixed into the grains collected in the Glen tank 6 at the end of cutting, and the sorting accuracy is maintained well. Moreover, since the grain in the second reduced product can be quickly collected in the Glen tank 6 after circulating in the threshing device 4 once or twice, damage due to multiple times or permanent circulation is prevented. be able to. The second reduced product that has not dropped due to the opening operation of the first fin 55a can be completely dropped from above the chaff sheave 55 by repeatedly opening and closing the fin 55a thereafter, whereby the processed product can be dropped from above the chaff sheave 55. It can be wiped out and the sorting load can be eliminated.

  Note that the chaff sheave 55 may be clogged with clogs depending on the material conditions, etc., and the sorting ability may be reduced. In such a case, the clogged custard is solved by repeatedly opening and closing the fin 55a at the end of cutting and placed on the sorting wind. It can also be expected to be discharged outside the aircraft. Further, the timer times of the standby mimer T3 and the fixed timer T4 are fixed times such as y1 seconds and y2 seconds which are set in advance. For example, if the load factor of the engine is large, the time of the standby timer T3 is shortened. If the load factor of the engine is large, the time of the fixed timer T4 can be lengthened, and if it is small, the time can be shortened.

  By setting as described above, if the engine load is large, the engine load can be reduced by quickly removing the processed material from the chaff sheave 55, and if the engine load is small, the Glen tank It is possible to further reduce the amount of cut straw mixed into the grains recovered in 6.

  Further, the timer times of the standby mimer T3 and the fixed timer T4 can be changed depending on the second return destination. That is, in this case, when the second product is returned to the front part of the handling chamber 41 and the degranulation process is performed again, the rate of damage to the grains increases. Shorten the time or lengthen the fixed timer T4, while the second item is on the feed pan 54, and when performing the re-sorting process, the rate of damage to the grain is small. In order to reduce the mixing of broken chips, the waiting timer T3 is lengthened or the fixed timer T4 is shortened. In this case, the return destination of the second item is detected by a reduction path detection sensor 93 that detects opening and closing of the lid 72.

  Furthermore, the timer time of the standby mimer T3 and the fixed timer T4 can be changed by determining whether the aircraft is running or stopped. In other words, the third loss cannot be completely eliminated regardless of how the sorting accuracy is improved regardless of whether the aircraft is traveling or stopped. However, when the aircraft is running, the 3rd thing is diffused and discharged to the field, so it is not noticeable. It will stand out. Therefore, when the aircraft is stopped to eliminate the worker's anxiety based on this, the waiting timer T3 is shortened or the fixed timer T4 is lengthened to release the third thing. cut back. Further, while the aircraft is traveling, the waiting timer T3 is lengthened, or the fixed timer T4 is shortened to improve the sorting accuracy.

  Then, the second embodiment of the cutting end control will be described with reference to FIG. 15. In contrast to the first embodiment, the opening degree when the fin 55a is opened is determined depending on the presence or absence of the processed material on the swing 51. The feature is that the timer time of the fixed timer is changed. That is, the front and rear layer thickness sensors 80 and 81 are both less than a predetermined value, for example, enter the separated “none” region, and the cutting end control is started, but the front or rear layer thickness sensors are “none”. If the detected object is not in the detection initial position even if it enters the area “”, it is determined that there is a workpiece on the swing, and the opening when the fin 55a is opened is, for example, half of the fully open (maximum opening rank x−1). And the timer time of the fixed timer T4 is shortened (S3) to reduce the occurrence of broken chips.

  On the other hand, if both the front and rear layer thickness sensors 80 and 81 detect the detection initial position, it is determined that there is no processed material on the swing 51, and in that case, the opening when opening the fin 55a is determined. The maximum opening rank (x-1) is fully opened, and the timer time of the fixed timer T4 is set to the long y2 seconds as before (S4). Reduce grain damage.

  Although the embodiment of the present invention has been described above, the front layer thickness sensor 80 may be provided near the rear portion of the feed pan 54 instead of being provided near the front portion of the chaff sheave 55, or the rear layer thickness sensor. It is also possible to eliminate the 81 and control only by the front layer thickness sensor 80. Further, as long as the amount of processed material on the swing sorter 51 can be accurately detected, a processing amount detection means such as a wind pressure sensor for detecting the pressure of the selected wind can be used instead of the layer thickness sensor S. And the sorting control device of the present invention can be used not only for general purpose combiners but also for threshing devices for self-removing combine harvesters, and the present invention is not limited to the above embodiment.

4 Threshing unit (threshing device)
41 Handling Room 42 Sorting Room 43 Handling Cylinder 49 Receiving Net 51 Oscillating Sorting Body 52 Kara Fan 53 Turbo Fan 54 Feed Pan 55 Chaff Sheave 62 First Spiral 64 Second Spiral 69 Slat Conveyor (Second Reduction Device N)
70 Reduction horizontal spiral (No. 2 reduction device N)
80 Front layer thickness sensor (processed amount detection means)
81 Rear layer thickness sensor (processed amount detection means)

Claims (5)

Handles a handling chamber with a handling cylinder and a receiving net, a sorting chamber provided below the handling chamber, a fan, a first spiral and a second spiral, and a second object collected by the second spiral. A second reduction device that returns to the chamber or the sorting chamber and a sorting control device that controls the fin opening of the chaff sheave of the swinging sorter, the sorting control device on the swinging sorter detected by the processing amount detection means The fin opening of the chaff sheave is automatically changed on the basis of the amount of the processed material, and the processed material on the rocking sorter detected by the processed material amount detecting means is less than a predetermined amount, and the fin opening potentiometer A screening control device for a threshing device, wherein when the detected fin opening is in a predetermined closed state, the fin is controlled to wait for a predetermined waiting time and to be in a predetermined open state.   The processing amount detection means is constituted by a front layer thickness sensor provided above the end portion of the feed pan provided above the chaff sheave or upstream from the chaff sheave, and a rear layer thickness sensor provided above the end portion of the chaff sheave. In addition, the sorting control device controls that the front and rear layer thickness sensors detect that the amount of processed material is less than a predetermined amount, and when the fin is in a predetermined closed state, the fin is in a predetermined open state. The sorting control device for a threshing device according to claim 1.   The sorting control device controls the fin to be in a predetermined open state when the processed material on the swinging sorter is less than a predetermined amount and the fin is in a predetermined closed state, and then the fin is in a predetermined closed state. The threshing apparatus sorting control apparatus according to claim 1, wherein the control is performed so that the open state and the closed state are repeated.   The sorting control device controls the fins to be in a predetermined open state after waiting for a predetermined waiting time when the processed material on the rocking sorter becomes a predetermined amount or less and the fins are in a predetermined closed state, Or after controlling to make it a predetermined open state, it waits for a predetermined waiting time, and it controls to make a fin close to a predetermined closed state, The threshing apparatus of Claims 1 thru | or 3 characterized by the above-mentioned. Sorting control device.   The sorting control device changes the maximum opening degree of the fin according to the presence or absence of the processed material on the rocking sorter when the processed material on the rocking sorter becomes a predetermined amount or less and the fin is in a predetermined closed state. The screening control device for a threshing apparatus according to claim 1, wherein the fin is controlled to be in an open state.

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