JP2009225684A - Threshing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing machine that intends to harmonize improvement in separation precision of grain with reduction in loss amount and continuously regulates gaps between fins for separation of grain from dust and the air flow of winnower even when a bad condition occurs in a means for detecting grain. <P>SOLUTION: The threshing machine is equipped with a volume switch for selecting one function from a plurality of functions indicating the relation between the velocity of a combine harvester and an allowable loss amount and has a constitution that the threshing machine determines whether or not a loss amount detected by a loss sensor is equal to or more than the allowable loss amount with reference to the selected function. When the loss amount is equal to or more than the allowable loss amount, a servo motor 70 is operated, and the loss amount is reduced. When the servo motor 70 is not operated, gaps between the fins 18a and the air flow of the winnower are continuously regulated by the actions of a waste straw guide bar 51 by pressing of discharged culms, a spring body 54, a rotary lever 52 etc. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a threshing machine capable of efficiently recovering grains threshed from cereal meal according to varieties and field conditions.

  The conventional combine harvests the culm with a cutting blade provided in the traveling machine body and conveys the harvested culm to the handling cylinder. A swing sorting device having a plurality of chaff fins is provided below the handling cylinder, and a red pepper is disposed below the swing sorting device. A dust exhaust port is provided at the rear part of the traveling machine body, and a dust exhaust fan for sucking dust is provided in the dust exhaust port. The grains and dust separated from the cereal by the handling cylinder fall to the swing sorting device, and by swinging of the swing sorting device, the grains having a large specific gravity leak from the gap between the chaff fins, Small dust, such as straw scraps, is sent to the rear of the rocking sorter. In addition, fine dust leaked together with the grain is sent backward by the wind action of the red pepper, sucked by the dust exhaust fan together with straw scraps sent to the rear of the swing sorting device, and discharged from the dust outlet. Is done. A part of the grain mixed in the straw is also discharged from the dust outlet.

  In addition, a Strollac having a through hole is provided at the rear part of the chaff fin, and a grain with a branch (hereinafter referred to as a cut piece) is sent to the rear of the swing sorting device and falls from the through hole, The fallen spikes are returned to the barrel by the conveyor.

The dust outlet is provided with a Glen loss detector that detects the amount of grain discharged from the dust outlet. Further, two hydraulic cylinders are connected to the chaff fin and the tang respectively, and two electromagnetic valves for switching supply and discharge of pressure oil are connected to the two hydraulic cylinders. Furthermore, the conventional combine is the amount of grain allowed to be discharged from the traveling speed of the traveling machine body and the dust outlet (hereinafter, the amount of grain allowed to be discharged from the dust outlet is referred to as the allowable loss amount). A recording medium on which a function indicating the relationship is recorded. As the speed of the traveling machine increases, the number of cereals harvested by the cutting blade increases, and the number of cereals threshed increases, so the function recorded in the recording medium has an allowable loss amount as the speed increases. It shows an increasing relationship.
Based on the function and the output of the Glen detector, the solenoid valve is operated, and the angle of the chaff fin so that the amount of grain discharged from the dust outlet (hereinafter referred to as loss amount) does not exceed the allowable loss amount. And adjusting the gap between the chaff fins and adjusting the air volume of the tang (Patent Document 1).

In addition, the waste transport unit that transports the waste discharged from the handling cylinder is provided with a rotation lever whose rotation direction is changed according to the increase or decrease of the waste, and a shutter is provided at the intake port of the red pepper. A combine has been proposed in the past. The rotating lever, the chaff fin and the shutter are connected by a wire. The combine rotates the rotating lever according to the increase / decrease of the waste, moves the wire, adjusts the angle for selecting the chaff fins, adjusts the opening / closing of the shutter, and adjusts the air volume of the red pepper. It is set as the structure to adjust (patent document 2).
JP 61-234714 A JP-A-10-295168

  The combine described in Patent Document 1 cannot adjust the angle of the chaff fin and the air volume of the red pepper when a malfunction occurs in the Glen loss detector due to vibration during traveling.

  When harvesting varieties that are prone to spikes, reduce the angle of the chaff fins to prevent the spikes from falling from the gaps between the chaff fins and send them to the Strolac to reprocess the spikes. It is desirable to improve the grain sorting accuracy by increasing the air volume of the tang and discharging fine dust. Also, when harvesting in a field with low soil moisture, the specific gravity of the grains is relatively small, so it is desirable to increase the angle of chaff fins and reduce the air volume of the tang to reduce the loss. However, the combine described in Patent Document 2 adjusts the angle of the chaff fin and adjusts the air volume of the tang according to the pressure of the exhaust. Therefore, the angle of the chaff fin and the air volume of the tang cannot be adjusted according to the variety and the field conditions, and it is impossible to achieve harmony between the improvement of the grain selection accuracy and the reduction of the loss amount.

  The present invention has been made in view of such circumstances, and is provided with an adjustment mechanism that adjusts the sorting accuracy in the sorting unit that sorts grains and dust separated from the cereal meal, and assists the operation of the adjustment mechanism. By providing a mechanism, and by providing a grain detection means for detecting the amount of loss discharged from the sorting unit, based on the amount of loss detected by the grain detection means, to control the operation of the auxiliary mechanism, When the loss amount is equal to or greater than the allowable loss amount, the auxiliary mechanism is operated to sufficiently reduce the loss amount, and it is possible to achieve harmony between improvement of grain sorting accuracy and reduction of the loss amount. . Also, a threshing machine capable of continuing the adjustment of the angle for selecting fins and the air volume of the tang by the operation of the adjustment mechanism even when a defect occurs in the grain detection means and the auxiliary mechanism does not operate is provided. The purpose is to do.

  Also, from a plurality of functions recording a plurality of functions indicating the relationship between the speed of the traveling machine body and the amount of grains allowed to be discharged from the sorting unit, and a plurality of functions recorded in the recording means By providing a selection unit for selecting one function, the user operates the selection unit to select one function corresponding to the variety and the field condition, and refers to the selected function to determine the loss amount. Compared with the permissible loss amount, and when the loss amount is equal to or greater than the permissible loss amount, the auxiliary mechanism is operated to sufficiently reduce the loss amount and improve the grain sorting accuracy and the loss amount. It aims at providing the threshing machine which can aim at harmony with reduction.

  A threshing machine capable of adjusting the amount of loss by adjusting the angle of the fins and the operation of the air volume adjusting mechanism by providing an air volume adjusting mechanism for adjusting the air volume of the blower and a plurality of fins. The purpose is to provide.

  In addition, the power supply mechanism is provided by connecting to the fins and the air flow adjusting mechanism, and by providing a rotation lever whose rotation direction is changed according to increase / decrease of the waste, and by providing a power source for rotating the rotation lever. An object of the present invention is to provide a threshing machine capable of adjusting the amount of loss by transmitting the power of the source to the rotating lever and operating the fins or the air volume adjusting mechanism.

  In addition, a driving source for supplying driving force to the traveling machine body is provided, and a clutch detecting unit is provided to detect the switching of the clutch by interposing a clutch between the driving source and the threshing portion, and further detecting the switching Control by the auxiliary control means is performed by providing means for indicating that control has been started by the auxiliary control means for controlling the auxiliary mechanism when the engagement of the clutch is detected by the means. An object of the present invention is to provide a threshing machine that can notify the user that the auxiliary control means is operating normally.

  Further, when the operation of the adjustment mechanism is assisted by the auxiliary mechanism, by providing a means for displaying that the operation of the adjustment mechanism is assisted by the auxiliary mechanism, a loss amount can be sufficiently obtained only by the operation of the adjustment mechanism. An object of the present invention is to provide a threshing machine capable of notifying the user that the vehicle cannot be reduced and prompting the user to decelerate the traveling machine body and reduce the amount of cereal harvested.

  Further, by providing means for determining whether or not the auxiliary mechanism can be operated, when it is determined that the auxiliary mechanism cannot be operated, the traveling machine body is forcibly decelerated, and It aims at providing the threshing machine which can reduce the amount of cuttings.

  A threshing machine according to the present invention is provided in a traveling machine body that travels in a field, a reaping part that harvests cereal grains during traveling, a threshing part that threshs cereals harvested by the reaping part, and the threshing A sorting unit that sorts grain and dust separated from the cereal at the unit, an adjustment mechanism that adjusts sorting accuracy in the sorting unit, and a grain detection unit that detects the amount of grain discharged from the sorting unit A threshing machine comprising: an auxiliary mechanism for assisting the operation of the adjustment mechanism; and an auxiliary control means for controlling the operation of the auxiliary mechanism based on the grain amount detected by the grain detection means. It is characterized by.

  In the present invention, the loss detected by the grain detection means is provided by providing an auxiliary mechanism for assisting the operation of the adjustment mechanism, and providing a grain detection means for detecting the amount of loss discharged from the sorting unit. Based on the amount, the operation of the auxiliary mechanism is controlled, and when the loss amount is equal to or greater than the allowable loss amount, the auxiliary mechanism is operated to sufficiently reduce the loss amount. Further, even when a defect occurs in the grain detecting means and the auxiliary mechanism does not operate, the adjustment of the angle for selecting the fins and the air volume of the tang is continued by the operation of the adjusting mechanism.

  The threshing machine according to the present invention includes speed detection means for detecting the speed of the traveling machine body, and a plurality of functions indicating the relationship between the speed of the traveling machine body and the amount of grain allowed to be discharged from the sorting unit. A recording means that is recorded, and a selection means for selecting one function from a plurality of functions recorded in the recording means, wherein the auxiliary control means refers to the function selected by the selection means And a means for operating the auxiliary mechanism on the basis of the grain amount detected by the grain detection means and the speed detected by the speed detection means.

  In the present invention, a plurality of functions indicating the relationship between the speed of the traveling machine body and the amount of grain allowed to be discharged from the sorting section are recorded, and the recording means records the functions. By providing a selection means for selecting one function from a plurality of functions, the user operates the selection means to select one function corresponding to the variety and the field condition, and refers to the selected function. The loss amount is compared with the allowable loss amount, and when the loss amount is equal to or greater than the allowable loss amount, the auxiliary mechanism is operated to sufficiently reduce the loss amount.

  In the threshing machine according to the present invention, the sorting unit includes a blower and a plurality of fins, and includes an air volume adjustment mechanism that adjusts an air volume of the blower, and the adjustment mechanism includes an operation of the air volume adjustment mechanism and the fins. And a mechanism for adjusting an angle for sorting the screens.

  In the present invention, by providing an air volume adjusting mechanism for adjusting the air volume of the blower and a plurality of fins, the angle for selecting the fins and the operation of the air volume adjusting mechanism are adjusted to adjust the loss amount.

  In the threshing machine according to the present invention, the adjusting mechanism is connected to the fin and the air flow adjusting mechanism, and a rotating lever whose rotating direction is changed according to increase / decrease of the waste discharged from the threshing portion is provided. The auxiliary mechanism includes a power source for rotating the rotating lever, and the operation of the fin or the air volume adjusting mechanism is adjusted by the power of the power source.

  In the present invention, there is provided a turning lever that is connected to the fin and the air volume adjusting mechanism, and whose turning direction is changed according to the increase / decrease of the waste, and a power source that turns the turning lever is provided. Thus, the power of the power source is transmitted to the rotating lever, and the fin or the air volume adjusting mechanism is operated to adjust the loss amount.

  A threshing machine according to the present invention includes a driving source that supplies driving force to the traveling machine body, a clutch that is interposed between the driving source and the threshing unit, a continuity detection unit that detects continuity of the clutch, And a means for displaying that the control by the auxiliary control means is started when the engagement of the clutch is detected by the connection detection means.

  In the present invention, a driving source for supplying driving force to the traveling machine body is provided, a clutch detection unit is provided for detecting the clutch switching by interposing a clutch between the driving source and the threshing unit, and By providing means for displaying that the control is started by the auxiliary control means for controlling the auxiliary mechanism when the engagement of the clutch is detected by the connection detection means, the control by the auxiliary control means is provided. Inform the user that this is happening.

  The threshing machine according to the present invention is characterized by comprising means for displaying that the operation of the adjustment mechanism is assisted by the auxiliary mechanism when the operation of the adjustment mechanism is assisted by the auxiliary mechanism.

  In the present invention, when the operation of the adjustment mechanism is assisted by the auxiliary mechanism, a means for displaying that the operation of the adjustment mechanism is assisted by the auxiliary mechanism is provided. The user is notified that the amount cannot be sufficiently reduced.

  The threshing machine according to the present invention forcibly moves the traveling machine body when it is determined by the means that the auxiliary mechanism can be operated and the auxiliary mechanism cannot be operated by the means. And means for decelerating.

  In the present invention, by providing means for determining whether or not the auxiliary mechanism can be operated, the traveling machine body is forcibly decelerated when it is determined that the operation of the auxiliary mechanism is impossible.

  In the threshing machine according to the present invention, an adjustment mechanism for adjusting the sorting accuracy in the sorting unit for sorting the grains and dust separated from the cereal meal is provided, and an auxiliary mechanism for assisting the operation of the adjustment mechanism is provided. By providing a grain detecting means for detecting the amount of loss discharged from the sorting unit, the operation of the auxiliary mechanism is controlled based on the amount of loss detected by the grain detecting means. When the amount is greater than or equal to the permissible loss amount, the auxiliary mechanism is operated to sufficiently reduce the loss amount, and harmony between improvement of grain sorting accuracy and reduction of the loss amount can be achieved. Further, even when a problem occurs in the grain detection means and the auxiliary mechanism does not operate, the adjustment of the angle for selecting the fins and the air volume of the tang can be continued by the operation of the adjusting mechanism.

  Also, from a plurality of functions recording a plurality of functions indicating the relationship between the speed of the traveling machine body and the amount of grains allowed to be discharged from the sorting unit, and a plurality of functions recorded in the recording means By providing a selection unit for selecting one function, the user operates the selection unit to select one function corresponding to the variety and the field condition, and refers to the selected function to determine the loss amount. Compared with the permissible loss amount, and when the loss amount is equal to or greater than the permissible loss amount, the auxiliary mechanism is operated to sufficiently reduce the loss amount and improve the grain sorting accuracy and the loss amount. Harmony with reduction can be achieved.

  Further, by providing an air volume adjusting mechanism and a plurality of fins for adjusting the air volume of the blower, the angle for selecting the fins and the operation of the air volume adjusting mechanism can be adjusted to adjust the loss amount.

  In addition, the power supply mechanism is provided by connecting to the fins and the air flow adjusting mechanism, and by providing a rotation lever whose rotation direction is changed according to increase / decrease of the waste, and by providing a power source for rotating the rotation lever. The power of the power source is transmitted to the rotating lever, and the amount of loss can be adjusted by operating the fin or the air volume adjusting mechanism.

  In addition, a driving source for supplying driving force to the traveling machine body is provided, and a clutch detecting unit is provided to detect the switching of the clutch by interposing a clutch between the driving source and the threshing portion, and further detecting the switching Control by the auxiliary control means is performed by providing means for indicating that control has been started by the auxiliary control means for controlling the auxiliary mechanism when the engagement of the clutch is detected by the means. This can be notified to the user, and the user can confirm that the auxiliary control means is operating normally.

  Further, when the operation of the adjustment mechanism is assisted by the auxiliary mechanism, by providing a means for displaying that the operation of the adjustment mechanism is assisted by the auxiliary mechanism, a loss amount can be sufficiently obtained only by the operation of the adjustment mechanism. It is possible to notify the user that the vehicle cannot be reduced and to prompt the user to decelerate the traveling machine body and reduce the amount of cereal harvested.

  Further, by providing means for determining whether or not the auxiliary mechanism can be operated, when it is determined that the auxiliary mechanism cannot be operated, the traveling machine body is forcibly decelerated, and The amount of cutting can be reduced.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating a combine according to an embodiment. 1 is an external perspective view of a combine, FIG. 2 is a partially cutaway side cross-sectional view of a threshing device, FIG. 3 is a transmission mechanism diagram of the combine, FIG. 4 is a side view showing a main part configuration of a chaff sheave and a shutter, and FIG. FIG. 3 is a schematic diagram showing the interior of a cabin.

  In the figure, reference numeral 1 denotes a traveling crawler, and a threshing device 2 is provided above the traveling crawler 1. On the front side of the threshing device 2, there is provided a cutting unit 3 including a weed plate 3a for distinguishing between a reaped cereal and non-reached cereal, a cutting blade 3b for reaping the cereal, and a raising device 3c for causing the cereal. It is. On the right side of the threshing device 2, a grain tank 4 for storing the grain is provided, and on the left part of the threshing device 2, a feed chain 5 for conveying cereals is provided. Further, a clamping member 6 is provided to oppose the feed chain 5 and clamp the cereal grains. In the vicinity of the start end of the feed chain 5, a vertical transfer device 7 is disposed. The grain tank 4 is provided with a cylindrical discharge auger 4a for discharging the grains. In addition, a cabin 8 for accommodating a user is provided on the front side of the grain tank 4.

  The cereals harvested by the reaping unit 3 are sent to the start end of the feed chain 5 through a lateral conveying device (not shown) and the longitudinal conveying device 7, and the culm is clamped by the clamping member 6. It is fed to the threshing device 2 for threshing processing. The grain after threshing is fed to the grain tank 4, and the grain fed to the grain tank 4 is discharged from the discharge auger 4a as necessary.

  The threshing device 2 has a handling chamber 10, and a drum-shaped handling cylinder 11 for threshing the cereal cocoon is pivoted in the handling chamber 10 along the front-rear direction. A large number of teeth 12, 12,... 12 are provided on the peripheral surface of the cylinder 11. A treatment cylinder 13 for reprocessing the discharge discharged from the treatment cylinder 11 is provided on the rear side of the treatment cylinder 11, and the conveyance carried by a second screw 26 described later is provided on the left side of the treatment cylinder 11. A processing rotor 14 for threshing an object is provided.

  A crimp net 15 that disperses crackling waste in cooperation with the teeth 12, 12,... 12 is disposed below the handling cylinder 11. Below the crimp net 15, there is provided a swinging sorter 16 for sorting grains and straw scraps. The rocking sorter 16 is disposed below the crimp net 15, and the rocking sorter 17 for leveling grains and straw scraps and performing specific gravity sorting, A chaff sheave 18 that is provided on the side and performs rough selection of grain and straw scraps, and is provided on the rear side of the chaff sheave 18 and drops the grains mixed with straw scraps onto a second grain plate 25 described later. And a Strollac 19. The Strollac 19 has a plurality of through holes (not shown), and the grains fall from the through holes. The swing sorting device 16 is provided below the chaff sheave 18 and includes a grain sheave 20 that performs fine sorting of grains and straw scraps. A swing arm 21 is connected to the front portion of the swing sorting board 17, and the swing sorting device 16 swings by swinging of the swing arm 21, so that grains and straw scraps are sorted. Done.

  The first grain plate 22 is provided below the grain sieve 20, and the first screw 23 for feeding the grain to the grain tank 4 is provided on the front side of the first grain plate 22. The first grain plate 22 is inclined so that the grain that has fallen from the grain sieve 20 to the first grain plate 22 slides down toward the first screw 23.

  An inclined plate 24 that slopes downward toward the rear is connected to the rear portion of the first grain plate 22, and a second grain plate 25 is connected to the rear end portion of the inclined plate 24. On the upper side of the connecting portion between the second grain plate 25 and the inclined plate 24, a second screw 26 is provided for transporting the fallen object dropped from the Strollac 19 to the processing rotor 14. The second grain plate 25 is inclined so that the fallen object dropped from the Strollac 19 slides down toward the second screw 26.

  A tang 27 that blows air backward is provided in front of the first screw 23 and below the swing sorter 17. Two current plates 28, 28 are disposed between the tongue 27 and the first screw 23. After the air flow generated by the tang 27 is rectified by the rectifying plates 28, 28, it passes through the air passage below the swing sorting device 16, and the dust outlet 33 and the exhaust passage 37 described later. Is discharged from the outside.

A passage plate 36 is connected to the rear end portion of the second grain plate 25. A lower suction cover 30 is provided above the passage plate 36. Between the lower suction cover 30 and the passage plate 36 is an exhaust passage 37 through which dust is discharged. The exhaust passage 37 is made of a piezoelectric element, and is provided with a loss sensor 34 for detecting the amount of loss.
An upper suction cover 31 is provided above the lower suction cover 30. Between the upper suction cover 31 and the lower suction cover 30, a dust exhaust fan 32, which is an axial fan and sucks and discharges scraps, is disposed. A dust exhaust port 33 is provided behind the dust exhaust fan 32, and a loss sensor 34 is also provided in the dust exhaust port 33. Wall waste sucked by the dust exhaust fan 32 is discharged from the dust exhaust port 33 to the outside.

  On the upper side of the upper suction cover 31, below the processing cylinder 13, there is provided a downcomer 35 that is inclined downward toward the front. The processed material processed by the processing cylinder 13 falls from the processing cylinder 13 to the flow-down rod 35, slides down the flow-down rod 35, and drops to the stroller 19.

  As shown in FIG. 3, the combine includes an engine 40 that drives the traveling crawler 1, and the engine 40 is connected to a traveling mission 42 for transmitting driving force to the traveling crawler 1 via an HST 41. It is. The HST 41 is provided with a mechanism for adjusting the flow rate of hydraulic oil (not shown) and a transmission circuit 41a for controlling the mechanism. Under the control of the transmission circuit 41a, the flow rate of the hydraulic oil is adjusted to adjust the speed. Further, the traveling mission 42 has a hall element and is provided with a speed sensor 43 for detecting the speed of the combine. The speed sensor 43 detects the rotational speed of a gear (not shown) that transmits a driving force to the traveling crawler 1.

  The engine 40 is connected to the handling cylinder 11 and the processing cylinder 13 via a threshing clutch 44 and is also connected to an eccentric crank 45. The eccentric crank 45 is connected to the swing arm 21 so that the swing sorting device 16 swings when the eccentric crank 45 is driven. The engine 40 is connected to the tang 27 through a threshing clutch 44, and is further connected to a cutter 46 that cuts the waste after threshing. The engine 40 is connected to the cutting unit 3 through a threshing clutch 44 and a cutting clutch 47.

  A waste wall chain 50 is provided in the vicinity of the handling cylinder 11 for conveying the waste threshed by the handling cylinder 11 toward the cutter 46. An exhaust wall guide rod 51 is provided so as to face the exhaust wall chain 50, and the waste water moves between the exhaust wall guide rod 51 and the exhaust wall chain 50 together with the movement of the exhaust wall chain 50.

As shown in FIG. 4, an L-shaped rotary lever 52 is provided on the lower side of the waste wall guide rod 51, and the rotary lever 52 extends from the front / rear shaft 52a which is long in the front-rear direction and from the front end of the front / rear shaft 52a. And an upper and lower shaft 52b protruding upward. A pivot 52c is provided at the corner between the vertical shaft 52b and the front / rear shaft 52a.
The waste wall guide rod 51 and the rear end portion of the front / rear shaft 52 a are connected via a connecting rod 53, and a spring body 54 is fixed around the connecting rod 53. As the waste moving between the waste wall guide rod 51 and the waste wall chain 50 increases, the waste wall guide rod 51 is pressed and moved downward, and the turning lever 52 is pivoted on the pivot 52c. It rotates backward (see the solid line arrow in FIG. 4). At this time, the spring body 54 is compressed. On the other hand, as the squeezing is reduced, the squeezing guide rod 51 moves upward due to the restoring force of the compressed spring body 54, and the pivot lever 52 pivots forward with the pivot 52c as a fulcrum (broken arrow in FIG. 4). reference).

Next, the configuration of the chaff sheave 18 will be described. The chaff sheave 18 has a frame (not shown) framed in a rectangular shape. A plurality of fins 18a, 18a,..., 18a extending in the left-right direction are juxtaposed in the front-rear direction between the left and right frame members extending in the front-rear direction. The upper portions of the fins 18a, 18a, ..., 18a are pivotally supported by a frame member, and the lower portions of the fins 18a, 18a, ..., 18a are pivoted by a single connecting rod 18b extending in the front-rear direction. It is supported. A middle portion of a rectangular rotating plate 18c is connected to the front portion of the connecting rod 18b, and one end of the rotating plate 18c is pivoted around the shaft 18i above the connecting rod 18b. It is supported. One end of a chaff wire 18e is connected to the other end of the rotating plate 18c, and the other end of the chaff wire 18e is connected to the vertical shaft 52b.
The shaft body 18i is provided with a potentiometer type fin sensor 18j for detecting the position of the rotating plate 18c. Based on the output of the fin sensor 18j, a fin angle (an angle formed between the fins 18a, 18a, ..., 18a and the connecting rod 18b) r is detected.

One end of an L-shaped manual plate 18h operated by a manual lever (not shown) is connected to the shaft 18i. The middle portion of the chaff wire 18e and one end portion of the manual wire 18g are connected to the other end portion of the manual plate 18h. The other end of the manual wire 18g is connected to the manual lever.
The manual plate 18h and the rotary plate 18c are connected to one end of the rotary plate 18c and the other end of the manual plate 18h via a spring body 18d. One end of a spring body 18f is connected to the middle portion of the manual plate 18h, and the other end of the spring body 18f is fixed at an appropriate position of the threshing device 2.

  When the pivot lever 52 pivots backward, the chaff wire 18e is pulled, the pivot plate 18c pivots counterclockwise, the connecting rod 18b moves rearward, and the fins 18a, 18a. ,..., 18a rises and the fin angle r increases, and the interval between the fins 18a, 18a,. At this time, the spring body 18f is compressed (see the solid line arrow in FIG. 4). On the other hand, when the turning lever 52 is turned forward, the turning plate 18c is turned clockwise by the restoring force of the spring body 18f, the connecting rod 18b is moved forward, the fins 18a, 18a tilts and the fin angle r becomes small, and the interval between the fins 18a, 18a,..., 18a becomes narrow (see the broken line arrows in FIG. 4). Further, by operating the manual lever, the manual wire 18g can be pulled or loosened to rotate the manual plate 18h and the rotating plate 18c, thereby adjusting the interval between the fins 18a, 18a,. It is like that. The manual lever can be fixed at an appropriate position.

  Next, the configuration near the air inlet 55 of the tang 27 will be described. A rectangular air inlet 55 through which air sucked into the carp 27 flows is provided on one side of the carp 27. A rectangular fixed plate 56 that is long in the front-rear direction and covers a part of the intake port 55 is provided at the center of the intake port 55, and a rectangular plate-shaped shutter 57 is adjacent to the upper side of the fixed plate 56. It is. One end of the shutter 57 is pivotally supported by the threshing device 2, and when the shutter 57 is rotated upward, the shutter 57 is separated from the fixed plate 56 and has an opening area of the intake port 55. When the shutter 57 is rotated downward, the shutter 57 approaches the fixed plate 56 and the opening area of the intake port 55 is reduced.

  An upper end portion of a tension spring 58 is connected to the front end portion of the shutter 57, and the lower end portion of the tension spring 58 is locked in place on the threshing device 2. A shaft body 59 projects forward from the front end portion of the shutter 57, and one end portion of the shutter wire 60 is connected to the projecting end portion of the shaft body 59. The other end of the shutter wire 60 is connected to the vertical shaft 52b.

  When the rotation lever 52 is rotated backward, the shutter wire 60 is pulled, the shutter 57 is rotated upward, the opening area of the intake port 55 is enlarged, and the tension spring 58 is extended. (See solid line arrow in FIG. 4). On the other hand, when the rotating lever 52 is rotated forward, the restoring force of the tension spring 58 causes the shutter 57 to rotate downward to reduce the opening area of the intake port 55 (broken arrow in FIG. 4). reference).

  A servo motor 70 is disposed below the rotating lever 52. The servo motor 70 is provided with an electromagnetic brake (not shown) that brakes the rotation shaft of the servo motor 70. The electromagnetic brake is released simultaneously with the start of rotation of the servo motor 70, and the electromagnetic brake is activated simultaneously with the end of rotation. The rotating shaft of the servo motor 70 is connected to one of the electromagnetic motor clutch 71 via a reduction gear box (not shown). The other of the motor clutch 71 is connected to the pivot 52c. The servo motor 70 is connected to a motor drive circuit 91 described later, and the motor clutch 71 is connected to a motor clutch drive circuit 92 described later.

  When the motor clutch 71 is engaged and the rotation lever 52 is rotated rearward by the rotation of the servo motor 70, the exhaust wall guide rod 51 moves downward and the spring body 54 is compressed. (See solid line arrow in FIG. 4). When the motor clutch 71 is disengaged, due to the restoring force of the spring body 54, the exhaust wall guide rod 51 moves upward and the pivot lever 52 pivots forward (see the broken line arrow in FIG. 4). .

  Next, the configuration inside the cabin 8 will be described. As shown in FIG. 5, a driver seat 80 is provided inside the cabin 8, and a steering wheel 81 is provided on the front side of the driver seat 80. A dash panel 82 is disposed below the steering wheel 81, and a threshing switch 83 for connecting and disconnecting the threshing clutch 44 and the threshing clutch 44 are connected to the dash panel 82. Control display lamp 84 indicating that the grain amount detected by the loss sensors 34, 34 is greater than or equal to a predetermined value, and loss amount increasing lamp 85, and ROM 90b described later, the speed and tolerance of the combine A volume switch 86 is provided for selecting one function from a plurality of functions f1 to f3 indicating the relationship between the loss amounts.

FIG. 6 is a block diagram showing a configuration around the controller for controlling the threshing operation, and FIG. 7 is a graph showing a plurality of functions showing the relationship between the combine speed and the allowable loss amount recorded in the ROM.
The combine includes a controller 90 that controls the threshing work. The controller 90 includes a CPU 90a that performs arithmetic processing, timing processing, and the like, and a plurality of functions f1 to f3 that indicate the relationship between the combine speed and the allowable loss amount (see FIG. 7). ), ROM 90b in which the minimum speed Vm at which the cutting unit 3 can normally perform cutting, the release loss amount Q, and the fin angle limit value r _max are recorded, and the RAM 90c that temporarily stores information necessary for threshing control The input interface 90d and the output interface 90e are provided.

  The threshing switch 83, the volume switch 86, the speed sensor 43, the loss sensors 34 and 34, and the fin sensor 18j are connected to the input interface 90d. The output interface 90e includes the control display lamp 84, the loss increase lamp 85, a motor drive circuit 91 that outputs a drive signal to the servo motor 70, a motor clutch drive circuit 92 that outputs a drive signal to the motor clutch 71, and a transmission circuit. 41a is connected. In FIG. 6, the two loss sensors 34 and 34 are simply referred to as a loss sensor 34, and the same applies hereinafter.

Next, operation control of the chaff sheave and shutter will be described. FIG. 8 and FIG. 9 are flowcharts showing the procedure of operation control of the chaff sheave and shutter. The motor clutch 71 is disengaged as a pre-stage for executing chaff sheave and shutter operation control.
The controller 90 determines whether or not a signal indicating that the threshing clutch 44 is engaged is input from the threshing switch 83 (step S1). When a signal indicating that the threshing clutch 44 is disconnected is input from the threshing switch 83 (step S1: NO), the process returns to step S1. When a signal indicating that the threshing clutch 44 is engaged is input from the threshing switch 83 (step S1: YES), a signal for lighting the control display lamp 84 is output (step S2).

  Next, the controller 90 accesses the ROM 90b and refers to the minimum speed Vm at which the cereal can be harvested (step S3). Then, a signal is taken from the speed sensor 43 to acquire the speed V (step S4). Next, the controller 90 determines whether or not the speed V is equal to or higher than the minimum speed Vm (step S5, see FIG. 7). When the speed V is less than the minimum speed Vm (step S5: NO), the process returns to step S5. When the speed V is equal to or higher than the minimum speed Vm (step S5: YES), a function that takes in a signal from the volume switch 86, accesses the ROM 90b, and shows the relationship between the combine speed and the allowable loss amount, for example, a function f1 is selected (see step S6, FIG. 7). Based on the function f1, the allowable loss amount L corresponding to the speed V is referred to (step S7). Next, the controller 90 takes in the signal from the loss sensor 34 and acquires the loss amount La (step S8).

Next, the controller 90 accesses the ROM 90b and acquires the fin angle limit value r _max (step S9). And a signal is taken in from fin sensor 18j and fin angle r is acquired (Step S10). Next, it is determined whether or not the fin angle r is equal to or greater than the fin angle limit value r _max (step S11). When the fin angle r is equal to or greater than the fin angle limit value r _max (step S11: YES), a low speed signal for reducing the predetermined speed is output to the transmission circuit 41a (step S12). Then, the process returns to step S4.

When the fin angle r is less than the fin angle limit value r _max (step S11: NO), it is determined whether or not the loss amount La is greater than or equal to the allowable loss amount L (step S13). When the loss amount La is less than the allowable loss amount L (step S13: NO), the process proceeds to step S27 described later.

  When the loss amount La is equal to or greater than the allowable loss amount L (step S13: YES), a joining signal is output to the motor clutch drive circuit 41a (step S14). Then, a signal for rotating the servo motor 70 a predetermined number of times is output to the motor drive circuit 91 (step S15). Then, a lighting signal is output to the loss amount increasing lamp 85 (step S16). Next, the controller 90 accesses the ROM 90b and refers to the release loss amount Q (step S17). The release loss amount Q is equal to or less than the allowable loss amount L. Next, the controller 90 takes in a signal from the loss sensor 34 and acquires a loss amount Lb (step S18).

Next, it is determined whether or not the loss amount Lb is equal to or less than the release loss amount Q (step S19). When the loss amount Lb is larger than the release loss amount Q (step S19: NO), the ROM 90b is accessed to obtain the fin angle limit value r _max (step S20). And a signal is taken in from fin sensor 18j and fin angle r is acquired (Step S21). Next, it is determined whether or not the fin angle r is equal to or greater than the fin angle limit value r _max (step S22). If the fin angle r is greater than or equal to the fin angle limit value r _max (step S22: YES), a low speed signal is output to the transmission circuit 41a (step S23). Then, the process returns to step S4. When the fin angle r is less than the fin angle limit value r _max (step S22: NO), a signal for rotating the servo motor 70 a predetermined number of times is output to the motor drive circuit 91 (step S24). Then, the process returns to step S18.

  If the loss amount Lb is equal to or less than the release loss amount Q (step S19: YES), a disconnection signal is output to the motor clutch drive circuit 41a (step S25). Then, a turn-off signal is output to the loss increase lamp 85 (step S26). Next, the controller 90 determines whether or not a signal indicating that the threshing clutch 44 is disconnected is input from the threshing switch 83 (step S27). When a signal indicating that the threshing clutch 44 is engaged is input from the threshing switch 83 (step S27: NO), the process returns to step S3. When a signal indicating that the threshing clutch 44 is disconnected is input from the threshing switch 83 (step S27: YES), a turn-off signal is output to the control display lamp 84 (step S28).

  In the threshing machine according to the embodiment, the user selects the function by operating the volume switch 86 according to the variety and the field condition, and refers to the selected function to detect the loss detected by the loss sensor 34. When the amount is equal to or greater than the allowable loss amount, the servo motor 70 is operated to sufficiently reduce the loss amount, thereby achieving harmony between improving the grain sorting accuracy and reducing the loss amount. In addition, when the loss sensor 34 malfunctions and the servo motor 70 does not operate, the fin angle r and the tangent are caused by the operations of the draining guide bar 51, the spring body 54, the rotating lever 52, etc. due to the pressing of the slag. The adjustment of the air volume of 27 can be continued.

  The power of the servo motor 70 is transmitted to the rotating lever 52 through the gear box 72 and the auxiliary wire 74, etc., and the angle of the fins 18a, 18a,. Thus, the loss amount can be reduced.

  When the threshing switch 83 is turned on and the threshing clutch 44 is engaged, the control display lamp 84 is turned on to notify the user that the control by the controller 90 is being performed, and the controller 90 The user can confirm that it is operating normally.

  Further, when assisting the operation of the rotation lever 52 by the servo motor 70, the loss increase lamp 85 is turned on, and the discharge wall guide rod 51, the spring body 54, the rotation lever 52, etc. It is possible to notify the user that the amount of loss cannot be sufficiently reduced by only the operation, and to prompt the user to reduce the harvesting amount of the culm by reducing the speed of the combine.

If the fin angle r is equal to or greater than the fin angle limit value r _max , the flow rate of hydraulic oil in the HST 41 is adjusted, the combine is forcibly decelerated, and the amount of harvested cereal can be reduced. it can.

  Since the manual lever can be fixed at an appropriate position, the fin angle r can be manually set when the controller 90 fails.

  As the loss sensor 34, a sound sensor that detects the sound of the grains that collide with the dust outlet 33 and the vicinity of the exhaust passage 37 may be used. In place of the servo motor 70, a hydraulic cylinder may be connected to the rotation lever 52, or an electromagnet may be provided to rotate the rotation lever 52 by magnetic force. In addition, two or four or more functions indicating the relationship between the combine speed and the allowable loss amount are recorded in the ROM, and one function is selected from the two, four or more functions by the volume switch. good. Further, a push-type switch may be provided instead of the volume switch 86, and the selected function may be changed each time the push-type switch is pressed. Further, when a display screen is provided in the cabin 8 and the operation of the rotating lever 52 is assisted by the servo motor 70, it may be displayed on the display screen that the speed of the combine is reduced. Further, a continuously variable transmission may be provided on the rotary shaft of the carp 27 and the rotational speed may be adjusted by operating the continuously variable transmission to adjust the air volume. A switch for canceling the operation of the servo motor 70 may be provided, and the fin angle r may be adjusted by a manual lever by releasing the operation of the servo motor 70 by the switch. Further, two rotary levers are connected to the waste wall guide rod 51, the fins 18a and the shutter 57 are connected to the two rotary levers, and two servo motors are provided on each rotary lever, respectively. At least one of opening and closing of the shutter may be controlled by a servo motor. The servo motor 70 includes a motor and a potentiometer, and the configuration thereof may be a unit including the motor and the potentiometer or a configuration combining the motor and the potentiometer.

It is an external appearance perspective view of the combine which concerns on embodiment. It is a schematic partial cutaway side surface sectional view of a combine threshing device concerning an embodiment. It is a transmission mechanism figure of the combine which concerns on embodiment. It is a side view which shows the principal part structure of the chaff sheave and shutter of the combine which concerns on embodiment. It is a schematic diagram which shows the cabin inside of the combine which concerns on embodiment. It is a block diagram which shows the structure around the controller which controls the threshing work of the combine which concerns on embodiment. It is a graph which shows the several function which shows the relationship between the speed of the combine currently recorded on ROM of the combine which concerns on embodiment, and an allowable loss amount. It is a flowchart which shows the process sequence of the operation control of the chaff sheave and shutter of the combine which concerns on embodiment. It is a flowchart which shows the process sequence of the operation control of the chaff sheave and shutter of the combine which concerns on embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling crawler 2 Threshing device 3 Mowing part 16 Oscillating sorting device (sorting part)
18 Chaff sheave 18a Fin 18c Rotating plate (Adjustment mechanism)
18h Manual plate (adjustment mechanism)
27 Karatsu (sorting department)
33 Dust outlet 40 Engine 43 Speed sensor 44 Threshing clutch 50 Waste wall chain 51 Waste wall guide rod (adjustment mechanism)
52 Rotating lever 53 Connecting rod (Adjustment mechanism)
54 Spring body (adjustment mechanism)
55 Air intake 57 Shutter 58 Tension spring (Adjustment mechanism)
59 Shaft (Adjustment mechanism)
60 Shutter wire (adjustment mechanism)
70 Servo motor (power source)
71 Motor clutch (auxiliary mechanism)
83 Threshing switch 84 Control display lamp 85 Loss increase lamp 86 Volume switch (selection means)
90 controller 90a CPU
90b ROM

Claims (7)

It is provided in a traveling machine body that travels in the field, and a mowing unit that harvests cereals while traveling, a threshing unit that threshs cereals harvested by the mowing unit, and the threshing unit separated from the cereals In a threshing machine comprising a sorting unit that sorts grain and dust, an adjustment mechanism that adjusts the sorting accuracy in the sorting unit, and a grain detection means that detects the amount of grain discharged from the sorting unit,
An auxiliary mechanism for assisting the operation of the adjustment mechanism;
A threshing machine, comprising: auxiliary control means for controlling the operation of the auxiliary mechanism based on the grain amount detected by the grain detection means. Speed detecting means for detecting the speed of the traveling aircraft;
A recording unit that records a plurality of functions indicating the relationship between the speed of the traveling machine body and the amount of grain allowed to be discharged from the sorting unit;
Selecting means for selecting one function from a plurality of functions recorded in the recording means;
The auxiliary control means refers to the function selected by the selection means, and operates the auxiliary mechanism based on the grain amount detected by the grain detection means and the speed detected by the speed detection means. The thresher according to claim 1, further comprising means. The sorting unit includes a blower and a plurality of fins,
An air volume adjusting mechanism for adjusting the air volume of the blower;
The threshing machine according to claim 1 or 2, wherein the adjustment mechanism includes a mechanism for adjusting an angle for the operation of the air volume adjustment mechanism and the selection of the fins. The adjustment mechanism is connected to the fins and the air volume adjustment mechanism, and includes a rotation lever whose rotation direction is changed according to increase / decrease of the waste discharged from the threshing portion,
The auxiliary mechanism includes a power source for rotating the rotation lever,
4. The threshing machine according to claim 3, wherein the operation of the fin or the air volume adjusting mechanism is adjusted by the power of the power source. A driving source for supplying driving force to the traveling machine body;
A clutch interposed between the drive source and the threshing section;
Discontinuity detecting means for detecting disengagement of the clutch;
And a means for displaying that the control by the auxiliary control means is started when the engagement of the clutch is detected by the connection detection means. Threshing machine as described in.   6. The apparatus according to claim 1, further comprising means for displaying that the operation of the adjustment mechanism is assisted by the auxiliary mechanism when the operation of the adjustment mechanism is assisted by the auxiliary mechanism. The threshing machine described. Means for determining whether or not to operate the auxiliary mechanism;
7. The apparatus according to claim 1, further comprising: a unit that forcibly decelerates the traveling body when it is determined that the operation of the auxiliary mechanism is impossible by the unit. Threshing machine.

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