JP7399036B2 - combine - Google Patents

Description

The present invention relates to a combine harvester that harvests planted grain culms in a field and performs threshing and sorting processing on the harvested grain culms using a threshing device.

The combine harvester harvests the planted grain culm, threshes and sorts the harvested grain culm, and conveys the obtained grain (sorted product) to a grain tank and stores it therein. If the harvested grain culm is not threshed properly, damage to the grain will occur. Furthermore, if the sorting is not carried out properly, foreign matter such as impurities other than grains will be mixed into the sorted material. As a result, grains of appropriate quality cannot be obtained.

Therefore, for example, the combine described in Patent Document 1 is equipped with a temporary storage section inside the grain tank, a camera that photographs the sorted material stored in the temporary storage section, and an image obtained by analyzing the photographed image. Various settings of the threshing device etc. are adjusted based on the accuracy of grain sorting (contamination of foreign substances, etc.).

JP 2019-10075 Publication

However, in the combine described in Patent Document 1, the sorted material that has been transported to the grain tank by the transport device and thrown into the storage section is supported at the rear of the grain tank (a position away from the throwing section). Since it is stored in a temporary storage section, it takes time for the sorted materials to accumulate in the temporary storage section, and there is a high possibility that the timing for checking the sorting accuracy and quality of the sorted materials will be delayed. As a result, for example, it takes time to perform aircraft control that reflects the analysis results, and the control response may be delayed.

Therefore, there is a need for a combine harvester that can store properly sorted materials.

The characteristic configuration of the combine harvester according to the present invention includes one threshing section for threshing crops, and a threshing section that is provided below the threshing section over a front and rear range , and that sorts out the threshed material leaking from the threshing section. a first sorting section provided below the sorting section and collecting the first item out of the sorted materials sorted by the sorting section; , on the downstream side in the conveyance direction of the threshed products, a second product collection section that collects second products from the sorted products; a threshing device having a second grain reducing device for returning the threshed material to a third part, the sorting part includes a swinging sorting device, and the swinging sorting device is arranged along the conveyance direction of the threshed material. A chaff sieve having a plurality of chaff flips and capable of changing the degree of leakage opening by changing the posture of the plurality of chaff flips, and measuring the amount of recovered first material as the amount of recovered first material. a sensor, a second grain sensor that measures the second grain return amount as a second grain return amount, and a control parameter for the threshing device according to the ratio of the second grain return amount to the first grain recovery amount. and a control unit that changes the leakage opening degree of the chaff sheave based on the control parameter , and the chaff sheave has a larger ratio, the larger the leakage opening degree. The point is that

With such a characteristic configuration, threshing control can be performed using control parameters set based on the first product collection amount and the second product return amount. Therefore, it becomes possible for the combine to store appropriately sorted materials.
In addition, the greater the ratio of the amount of second material recovered to the amount of first material recovered, the greater the leakage opening of the chaff sieve. This makes it possible to suppress the reduction to Therefore, according to this configuration, it is possible to control the operation of the swing sorting device and perform threshing control more appropriately.

Further, it is preferable that the sorting section includes a winnowing machine, and the volume of the sorting air of the winnowing machine increases as the ratio increases.

With this configuration, the larger the ratio of the amount of second item returned to the amount of first item recovered, the more the air volume of the sorting air in the winnowing machine increases, which facilitates transport to the first item collection section and It becomes possible to suppress the return to the sorting section by the product return device. Therefore, according to this configuration, the operation of the swing sorting device can be controlled and threshing control can be performed more appropriately.

The travel control unit also includes a travel control unit that performs travel control of the aircraft, and the travel control unit is configured to control when the ratio does not become smaller even when the leakage opening degree is increased and the air volume is increased. , it is preferable to reduce the traveling speed of the aircraft.

With such a configuration, the amount of crops harvested by the combine can be reduced, and therefore the amount of crops conveyed to the threshing device can also be reduced. Therefore, it is possible to give priority to the threshing process of the threshed material remaining in the threshing device.

Further, the traveling control unit may stop the aircraft if the leakage opening degree is increased and the ratio does not become smaller by the time a preset time elapses after the air volume is increased. suitable.

With such a configuration, the amount of crops transported to the threshing device can be further reduced. Therefore, it becomes possible to give top priority to the threshing process of the threshed material remaining in the threshing device.

Further, it is preferable to include a notification unit that notifies when the ratio does not become smaller even when the leakage opening degree is increased and the air volume is increased.

With such a configuration, it becomes possible to clearly show to the surroundings that the ratio of the amount of second item returned to the amount of first item recovered is not small. Therefore, it becomes possible for the operator to take predetermined measures.

FIG. 2 is an overall right side view of the combine harvester. FIG. 2 is an overall plan view of the combine harvester. It is a vertical left side view of a threshing device. It is a front view of a grain tank, a grain lifting device, and a threshing device. FIG. 3 is a vertical right side view of the grain frying device. It is a layout diagram of a second object sensor and a second object discharge port. It is a layout diagram of a second object sensor and a second object discharge port. It is a layout diagram of a second object sensor and a second object discharge port. It is a side view of a second object sensor. FIG. 3 is a block diagram showing functional units related to threshing control. It is a figure showing the setting of a control parameter. It is a figure which shows the relationship between each of a leakage opening degree and an air volume, and the ratio of the amount of the 2nd thing returned to the amount of the 1st thing recovered.

The combine harvester according to the present invention is configured to be able to store grains that have been appropriately sorted from threshed crops. Hereinafter, the combine harvester of this embodiment will be explained using a normal type combine harvester as an example.

FIG. 1 is a right side view of the combine, and FIG. 2 is a plan view of the combine. Here, for ease of understanding, in this embodiment, unless otherwise specified, "front" (the direction of arrow F shown in FIG. 1) means the front in the longitudinal direction (traveling direction) of the aircraft; The term "rear" (direction of arrow B shown in FIG. 1) means the rear in the longitudinal direction (running direction) of the aircraft. In addition, "up" (direction of arrow U shown in Figure 1) and "down" (direction of arrow D shown in Figure 1) are the positional relationships in the vertical direction (vertical direction) of the aircraft, and are shall indicate the relationship. Furthermore, the left-right direction or lateral direction refers to the transverse direction of the aircraft (aircraft width direction) perpendicular to the longitudinal direction of the aircraft, that is, "left" (direction of arrow L shown in FIG. 2) and "right" (direction of arrow R shown in FIG. 2). ) shall mean the left and right directions of the aircraft, respectively.

The combine harvester includes a crawler-type traveling device 3 (corresponding to a "traveling control unit"), a body frame 2 (corresponding to a "body") supported by the traveling device 3, and crops in the field (rice, wheat, soybeans, etc.). A reaping section 4 for reaping various crops such as rapeseed, a feeder 11, a threshing device 1, a grain tank 12, and a grain discharge device 14 are provided.

The reaping section 4 includes a raking reel 5 for raking the crops, a clipper-type cutting device 6 for cutting the crops in the field, and an auger 7 for laterally feeding the cut crops to the feeder 11. The crops harvested by the reaping section 4 are conveyed to the threshing device 1 by the feeder 11, and are subjected to threshing and sorting processing by the threshing device 1. The sorted material that has been threshed and sorted by the threshing device 1 is stored in a grain tank 12, and is appropriately discharged to the outside of the machine by a grain discharge device 14.

A driving section 9 is provided on the right rear side of the reaping section 4 in parallel with the feeder 11. The driving section 9 is covered by a cabin 10. An engine room ER is provided below the operating section 9, and the engine room ER accommodates the engine E and, although not particularly shown, a cooling fan, a radiator, and the like. The power of the engine E is transmitted to working devices such as the traveling device 3, the reaping section 4, and the threshing device 1 by a power transmission mechanism (not shown).

Next, the configuration of the threshing device 1 will be explained using a vertical left side view of the threshing device 1 shown in FIG. The threshing device 1 is installed on the body frame 2, and includes a threshing section 41 that threshes crops using a handling cylinder 22, and a sorting section 42 that performs rocking sorting on the threshed material. The threshing section 41 is arranged in the upper region of the threshing device 1 , the receiving net 23 is provided below the threshing section 41 , and the sorting section 42 is provided below the receiving net 23 . The sorting unit 42 sorts the threshed material leaking from the receiving net 23 into sorted material containing grains to be collected and waste such as waste straw.

The threshing section 41 includes a handling chamber 21 surrounded by left and right side walls of the threshing device 1, a top plate 53, and a receiving net 23. The handling chamber 21 is equipped with a handling cylinder 22 that rotates to thresh crops, and a plurality of dust sending valves 53a. The crops transported by the feeder 11 are put into a handling chamber 21 and threshed by a handling cylinder 22. The crops carried by the handling cylinder 22 are transferred rearward by the feeding action of the dust feeding valve 53a.

The dust feeding valves 53a are plate-shaped and are provided on the inner surface (lower surface) of the top plate 53 at predetermined intervals along the front-rear direction. The dust feeding valve 53a is provided in an attitude that is inclined with respect to the rotation axis X when viewed from above. Therefore, each dust feeding valve 53a applies a force to move the reaped grain culm rotating together with the handling cylinder 22 in the handling chamber 21 to the rear side. Further, the inclination angle of the dust feeding valve 53a with respect to the rotation axis X can be adjusted. The speed at which the crops are sent backward in the handling barrel 22 is determined by the inclination angle of the dust feeding valve 53a. The threshing efficiency with which the crop is threshed is also influenced by the speed at which the crop is fed through the handling cylinder 22. As a result, the processing capacity by which crops are threshed can be adjusted using various means, and one means is to change the inclination angle of the dust sending valve 53a. Although not particularly shown in the drawings, a dust valve control mechanism that can change and control the inclination posture of the dust feed valve 53a is provided, and the inclination angle of the dust feed valve 53a can be automatically changed.

The threshing device 1 includes a first product recovery section 26, a second product recovery section 27, and a second product return device 32. The sorting section 42 includes a swing sorting device 24 having a sieve case 33 and a winnow 19 .

The winnower 19 is provided in the lower region of the front region of the sorting section 42 and generates sorting air from the front side of the swing sorting device 24 toward the rear along the conveyance direction of the processed materials. The sorting wind has the effect of sending out waste straw and the like having a relatively light specific gravity toward the rear side of the sieve case 33. Furthermore, in the swing sorting device 24, the swing drive mechanism 43 swings the sheave case 33, thereby performing the swing sorting process while the threshed material inside the sheave case 33 is transferred rearward. For this reason, in the following description, the upstream side in the transport direction of the processed material will be referred to as the front end or front side, and the downstream side will be referred to as the rear end or rear side in the swing sorting device 24. Note that the intensity (air volume, wind speed) of the sorting air from the winch 19 can be changed. Increasing the sorting wind makes it easier to send the threshed material backwards, increasing the sorting speed. On the other hand, if the sorting wind is weakened, the threshed grains will remain in the sieve case 33 for a long time, increasing the sorting accuracy. Therefore, the sorting efficiency (sorting accuracy and sorting speed) of the swing sorting device 24 can be adjusted by changing the strength of the sorting air of the winnowing machine 19. Although not particularly shown, a winnow control mechanism that can change and control the intensity of the sorting air from the winnower 19 is provided, so that the intensity of the sorting air from the winnower 19 can be automatically changed.

A first chaff sheave 38 is provided in the first half of the sheave case 33, and a second chaff sheave 39 is provided in the second half of the sheave case 33. The sieve case 33 is equipped with a grain pan and a grain sieve 40 in addition to the first chaff sieve 38 and the like, although this will not be specifically explained since it is a common configuration. The threshed material that has leaked through the receiving net 23 falls onto the first chaff sieve 38 and the second chaff sieve 39. Most of the threshed material leaks from the receiving net 23 to the first half of the sieve case 33 including the first chaff sieve 38, and is roughly sorted and finely sorted by the first half of the sieve case 33. Some of the threshed material leaks from the receiving net 23 to the second chaff sieve 39, or is transferred to the second chaff sieve 39 without leaking in the first chaff sieve 38, and is transferred to the second chaff sieve 39. The leakage will be screened out.

The grain sheave 40 is provided below the first chaff sheave 38 . That is, the swing sorting device 24 includes a grain sieve 40 provided below the first chaff sieve 38. The grain sieve 40 is made of a porous member such as a punching metal or a net, and receives the threshed material leaking from the first chaff sieve 38 and sorts it out.

A screw-type first item collecting section 26 is provided below the first half of the sheave case 33, and a screw-type second object collecting section 27 is provided below the rear half of the sheave case 33. The first item that has been sorted by the first half of the sieve case 33 and has leaked out, that is, the first item of the sorted items that have been sorted by the sorting section 42, is collected by the first item collection section 26, and The grains are transported toward the side of the grain tank 12 (the right side in the left-right direction of the machine). The second material that has been sorted and leaked by the latter half of the sieve case 33 (second chaff sieve 39) (generally has low sorting accuracy and has a high proportion of cut straw, etc.), that is, among the sorted materials. The second item is collected by the second item collecting section 27. The second item corresponds to the threshed product that was not selected as the sorted product among the threshed products. The second material collected by the second material collection section 27 is returned to the front part of the sorting section 42 by the second material reducing device 32 and is re-sorted by the sieve case 33.

The first chaff sieve 38 is equipped with a plurality of plate-shaped chaffs arranged in line along the transfer (conveyance) direction (front-back direction) of the threshed material. Each chaflip is arranged in an inclined position toward the rear end, diagonally upward. The inclination angle of the chaflips is variable, and the steeper the inclination angle, the wider the distance between adjacent chaflips, making it easier for the threshed material to leak out. That is, the leakage opening degree can be changed by changing the posture of the plurality of chaflips. Therefore, by adjusting the inclination angle of the chaflip, the sorting efficiency (sorting accuracy and sorting speed) of the swing sorting device 24 can be adjusted. A lip control mechanism capable of changing and controlling the tilting posture of the chaflip is provided, and the tilting angle of the chaflip can be automatically changed.

The second chaff sheave 39 also has the same configuration as the first chaff sheave 38. An angle control mechanism capable of changing and controlling the inclination posture of the chaf flip of the second chaf sheave 39 is also provided, and the inclination angle of the chaf flip can be automatically changed.

4 is a front view of the grain tank 12, the grain lifting device 29, and the threshing device 1, and FIG. 5 is a vertical right side view of the grain lifting device 29. As shown in FIGS. 4 and 5, a grain frying device 29 is provided which conveys the sorted materials collected by the first grain collection section 26 to the grain tank 12. The grain lifting device 29 is disposed between the threshing device 1 and the grain tank 12, and is erected in an attitude along the vertical direction. The grain frying device 29 is constituted by a bucket-type conveyor. The sorted material lifted by the grain lifting device 29 is delivered to the cross-feeding conveyance device 30 at the upper end of the grain lifting device 29. The lateral feed conveyance device 30 is configured in a screw type, and is thrust into the interior of the grain tank 12 from the front left wall portion of the grain tank 12 . A grain discharging device 30A is provided at the end of the transverse conveyance device 30 on the inside side of the tank. The grain discharge device 30A includes a plate-shaped discharge rotating body 30B, which rotates integrally with the screw portion. The sorted material is transported laterally by the transporter 30, and finally thrown into the grain tank 12 from the throwing port 30C of the grain discharger 30A.

In the grain lifting device 29, as shown in FIGS. 4 and 5, a plurality of buckets 31 are attached at regular intervals to the outer circumferential side of an endless rotating chain 29C that is wound around a driving sprocket 29A and a driven sprocket 29B. There is. The grain frying device 29 includes a feed path 29D through which a bucket 31 containing the sorted material is raised, and a return path 29E through which the bucket 31 descends after discharging the sorted material to the traverse transport device 30. The sending route 29D and the return route 29E are arranged side by side along the left side wall 12b of the grain tank 12 so that the sending route 29D is on the rear side.

The first item sensor 60 measures the amount of collected first items as the amount of collected first items (see FIG. 10). The first product sensor 60 is located at any position on the conveyance route where the sorted product is transported from the first product collection unit 26 to the grain tank 12, specifically, when the sorted product is transported from the first product collection unit 26 to the grain tank 12. It is arranged so as to measure the amount of the sorted material at any position up to the throwing port 30C that is thrown into the grain tank 12. The first object sensor 60 can be configured to detect the amount of objects to be sorted using, for example, a physical contact type sensor. Alternatively, a result obtained by a map sensor generated by associating the amount of collected first material with map information showing a map of the field may be used, or, for example, at any position from the first material collecting section 26 to the throwing port 30C. A camera is provided, and the camera captures an image of the first item in the first item collecting section 26, an image showing grains falling downward from the handling cylinder 22 of the threshing device 1, and a sheave case 33 of the threshing device 1. Based on the captured image of the grains falling downward from the grain tank 12, the captured image of the grains being put into the grain tank 12, the captured image of the grains being conveyed by the bucket 31, etc. The amount recovered may be measured (estimated). Alternatively, the amount of collected first items may be measured (estimated) using the load (torque, etc.) on the screw of the first item collecting section 26.

As described above, the second product is returned to the upstream side, which is the front part of the swing sorting device 24, by the second product reducing device 32. Specifically, the second material discharge port 32A of the second material reducing device 32 is located at a radially outer position in the arc-shaped receiving net 23 (on the side of the receiving net 23, and the second material is located on the side of the receiving net 23). The second object is discharged at this position. The threshing device 1 is equipped with a second grain sensor 70 that measures the amount of the second grain returned in this way as the second grain return amount. FIGS. 6 to 9 show the arrangement of such a second object discharge port 32A.

In this embodiment, as shown in FIG. 6, the second material discharge port 32A is provided toward the receiving net 23 side. As shown in FIGS. 7 and 8, a rotating blade 32B that rotates together with a screw constituting the second product reduction device 32 is provided near the second product discharge port 32A, and is transported by the second product reduction device 32. The second grains are discharged radially outward from the second grain discharge port 32A by the rotating blade 32B through the insertion hole formed in the side wall 50 of the threshing section 41 (as shown by the broken line arrow in FIG. 8). ).

The second material discharge port 32A is provided with a guide portion 32C that guides the discharged second material toward the upper side of the swing sorting device 24 in the processing material transfer direction. The guide portion 32C is configured to have a partially cylindrical shape having an inner circumferential surface facing the second item discharge port 32A. In other words, the band plate is bent into an arc shape. The inner circumferential surface of the guide portion 32C restricts the discharge direction of the second object discharged by the rotating blade 32B.

As shown in FIGS. 7 and 8, the second object sensor 70 is supported by the inner side portion of the side wall 50 in the threshing section 41. As shown in FIGS. The second product sensor 70 is configured to measure the amount of the second product returned by contacting the second product discharged by the rotating blade 32B in the second product reducing device 32. The second object sensor 70 includes a swinging arm 72 that is located on the extension of the second object released by the second object reduction device 32 and swings when the second object comes into contact with it; It includes a measurement section 73 that measures the amount of reduction based on the swing angle of the arm 72, a support frame 74 that supports the measurement section 73 and the swing arm 72, and a cover body 75 that covers the upper part of the second object sensor 70. ing.

The measuring section 73 has a potentiometer built into the case, and is fastened and fixed to the inner side of the support frame 74 with bolts. The measurement unit 73 is provided with a rotating shaft 76 that extends through the support frame 74 and protrudes outward (towards the side wall 50), and a swing arm 72 is attached to the rotating shaft 76 so as to be integrally rotatable therewith. The swing arm 72 extends downward from the rotating shaft 76, and is positioned within a guide path along which the second item is guided by the guide portion 32C. The swing arm 72 is supported so as to be swingable around the axis of a rotating shaft 76 .

The cover body 75 is configured to cover above each of the swing arm 72, the measuring section 73, and the support frame 74. This cover body 75 can prevent fine dust from the threshing material leaking through the receiving net 23 from falling on the swing arm 72 and the measuring section 73 and interfering with the measuring operation.

As shown in FIG. 9, the swing arm 72 has an extending portion extending upward from the rotating shaft 76, and a coil spring 78 is stretched across the extending portion and the spring receiving portion 77. The swinging arm 72 is biased to swing so as to approach the second item discharge port 32A by the tensile biasing force of the coil spring 78. The swinging arm 72 has its upper end abutted against the locking portion 79 and is held in a downward standby position against the biasing force of the spring.

When the second item discharged by the rotary vane 32B through the second item discharge port 32A comes into contact with the swinging arm 72, the swinging arm 72 resists the urging force of the coil spring 78 due to the pressing force and moves to the second item discharge port 32A. It swings in the direction away from. The swing angle at this time is measured by the measurement unit 73, and the second return amount is calculated based on the measurement result. Specifically, it is preferable to store a map or formula showing the relationship between the swing angle and the amount of return in the measurement unit 73, and calculate the amount of return based on the map or formula.

FIG. 10 is a block diagram showing functional units related to threshing control using the measurement results by the first object sensor 60 and the second object sensor 70. As shown in FIG. 10, the measurement results by the first object sensor 60 and the measurement results by the second object sensor 70 are transmitted to the parameter determining section 80. The parameter determination unit 80 determines the control parameters of the threshing device 1 according to the ratio of the second grain return amount to the first grain recovery amount. The first item collection amount is the amount of first item collected as indicated by the measurement result of the first item sensor 60. The second product reduction amount is the second product reduction amount indicated by the measurement result of the second product sensor 70. The ratio of the return amount of the second product to the recovery amount of the first product is the value obtained by dividing the return amount of the second product by the recovery amount of the first product. Here, due to the configuration of the first object sensor 60 and the second object sensor 70, measurement results of the first object recovery amount and the second object return amount cannot always be constant values. Therefore, the parameter determination unit 80 may calculate the average value of the first item recovery amount and the second item return amount over a predetermined time to obtain the above ratio, or the first item recovery amount and the second item return amount may be calculated to obtain the above ratio. The above ratio may be determined using the instantaneous values of the recovery amount and the second product reduction amount.

The control parameters of the threshing device 1 are device setting values that set the capacity of the threshing device 1, and specifically, the threshing parameters that can set the threshing capacity of the threshing section 41 included in the threshing device 1, and the sorting section 42. This corresponds to a sorting parameter that can set the sorting ability. The threshing parameters that can set the threshing capacity in the threshing section 41 include a setting value for setting the rotational speed of the rotational support shaft 55 of the handling drum 22 and a setting value for setting the mounting angle of the dust feeding valve 53a with respect to the top plate 53. Equivalent to. In addition, the sorting parameters that can set the sorting capacity in the sorting section 42 include a set value for setting the air volume of the sorting air from the winnower 19, a set value for setting the leakage opening of the chaff sieve, and a set value for setting the leakage opening degree of the chaff sieve, and This corresponds to the set value for setting the swing speed and amount of swing of the swing drive mechanism 43 that swings. Furthermore, by increasing or decreasing the traveling speed of the machine frame 2, it is possible to change the amount of crops that the combine harvests. Therefore, the traveling speed of the fuselage frame 2 is also included in the control parameters.

By changing the above-mentioned control parameters, the parameter determining unit 80 determines the sorting capacity of the oscillating sorting device 24, that is, the amount of processed materials that leaks from the receiving net 23 and is collected by the first material collecting unit 26. The sorting degree (or sorting efficiency), which is the ratio of the amount of the first item, is determined to be appropriate.

As shown in FIG. 11, when setting a predetermined control parameter, the parameter determination unit 80 sets a first threshold value for the ratio of the second product return amount to the first product collection amount, which is larger than the first threshold value. It is preferable to set the second threshold value in advance and set the control parameter with a setting range between the first threshold value and the second threshold value. This makes it possible to set the minimum and maximum values of the control parameters, making it possible to secure the control amount.

Returning to FIG. 10, the control unit 90 controls the thresher 1 based on the control parameters. That is, the control unit 90 controls the threshing section 41 and the sorting section 42 of the threshing device 1 using the control parameters described above. In the threshing device 1 controlled in this way, the first product sensor 60 and the second product sensor 70 measure the recovery amount and the return amount, respectively, and the parameter determination unit 80 determines control parameters, and the control unit 90 controls the threshing device 1. Therefore, the control unit 90 performs feedback control based on the measurement results of the first product sensor 60 and the second product sensor 70, and the control unit 90 performs feedback control based on the measurement results of the first product sensor 60 and the second product sensor 70. It becomes possible to set appropriate control parameters in real time and perform harvesting operations appropriately.

Specifically, as shown in FIG. 12, the chaff sieve has a larger leakage opening as the ratio of the second product return amount to the first product recovery amount is increased, and the chaff sieve 19 has a larger leakage opening as the ratio of the second product return amount to the first product recovery amount increases. The larger the ratio of the second product reduction amount to the second product, the greater the amount of screening air. If the ratio of the amount of second item returned to the amount of first item recovered is large, the oscillating sorting device 24 does not collect the second item as the first item, and the second item is not returned as the second item. There is a possibility that a large amount is transported as a third item to the rear. Therefore, if the ratio of the second product return amount to the first product recovery amount is large, by setting the leakage opening of the chaff sieve to a large value, the first product collection section 26 or the second product collection section 27 can be sorted. By making it easier for the processed material to leak out and increasing the volume of the sorting air from the winch 19, it becomes possible to transport items other than the processed material to the rear of the swing sorting device 24. As a result, it is possible to reduce loss of the third item, which occurs when the third item is transported as the third item. On the other hand, if the ratio of the amount of second item returned to the amount of first item recovered is too high, the sorting accuracy is too high and the swing sorting device 24 does not collect the first item, but the second item collection unit 27 There is a possibility that the amount transported is large. Therefore, if the ratio of the second product return amount to the first product recovery amount is small, the leakage opening of the chaff sieve can be set small to make it easier for the sorted material to leak into the first product recovery section 26. However, by reducing the volume of the sorting air from the winch 19, it becomes possible to make it difficult to convey the sorted items to the rear of the swing sorting device 24. This makes it easier to collect the item. In addition, in FIG. 12, the relationship between the leakage opening degree and the ratio of the second product return amount to the first product recovery amount, and the relationship between the air volume and the ratio of the second product return amount to the first product recovery amount, are shown. Although the same characteristics are shown, it is possible to have different characteristics, and it is also possible to change them for each type of crop.

In addition, in some cases, even if the leakage opening of the chaff sieve is increased and the flow rate of the sorting air of the winch 19 is increased, the ratio of the amount of second material returned to the amount of first material recovered does not become smaller. This is assumed to be due to the amount of crops supplied to the threshing device 1 being too large. Therefore, even if the leakage opening of the chaff sieve is increased and the flow rate of the sorting air of the chiffon 19 is increased, if the ratio of the amount of second material returned to the amount of first material recovered does not decrease, the traveling device 3 is preferable if the traveling speed of the fuselage frame 2 is reduced. As a result, the amount of crops supplied to the threshing device 1 is reduced, and the amount of threshing and sorting in the threshing device 1 can be reduced, so that the sorting process can be performed appropriately.

Furthermore, due to an unexpected reason, the leakage opening of the chaff sieve is increased and the flow rate of the sorting air of the winch 19 is increased. When the ratio of the amount does not become small, or when the ratio of the amount of second material returned to the amount of first material recovered does not become small by the time a preset time elapses after the traveling speed of the aircraft frame 2 is reduced, It is preferable that the traveling device 3 stops the fuselage frame 2. Thereby, the supply of crops to the threshing device 1 can be temporarily interrupted, so that the load related to the threshing process and the sorting process in the threshing device 1 can be reduced. Therefore, it is now possible to process crops within the threshing device 1.

In addition, even if the leakage opening of the chaff sieve is increased and the flow rate of the sorting air of the chiffon 19 is increased, if the ratio of the amount of second material returned to the amount of first material recovered does not become smaller, the notification section 91 may be configured to notify. This makes it possible to inform the operator and the surroundings that the ratio of the second item return amount to the first item recovery amount will not become large.

[Other embodiments]
In the embodiment described above, the chaff sieve has a larger leakage opening as the ratio of the second product return amount to the first product recovery amount is increased, and the chaff sieve has a larger leakage opening degree as the ratio of the second product return amount to the first product recovery amount. Although it has been explained that the flow rate of the sorting air is increased as the number is larger, the leakage opening degree of the chaff sieve and the air volume of the sorting air may be adjusted to at least either one of them. Furthermore, the threshing capacity and sorting capacity may be changed by other controls without adjusting the leakage opening degree of the chaff sieve and the air volume of the sorting air.

In the embodiment described above, even when the leakage opening degree of the chaff sieve is increased and the flow rate of the sorting air of the winch 19 is increased, the traveling device 3 is able to reduce the amount of second material returned relative to the amount of first material recovered. Although it has been explained that the traveling speed of the fuselage frame 2 is reduced when the ratio of It is also possible to configure the system so that the speed is not reduced.

In the embodiment described above, the traveling device 3 is configured to increase the leakage opening degree of the chaff sieve and increase the air volume of the sorting air of the winch 19 to increase the amount of collected items by the time a preset time elapses. Although it has been described that the aircraft frame 2 is stopped when the ratio of the second product return amount is not reduced, the traveling device 3 can also be configured so as not to stop the aircraft frame 2.

In the above embodiment, even when the leakage opening of the chaff sieve is increased and the flow rate of the sorting air of the winch 19 is increased, the ratio of the amount of second material returned to the amount of first material recovered does not decrease. Although the description has been made assuming that the notification section 91 is provided, it is also possible to configure the system without the notification section 91.

In the above embodiment, an example in which the combine harvester is a normal type combine harvester has been described, but the combine harvester may be a self-removal type combine harvester.

INDUSTRIAL APPLICABILITY The present invention can be used in a combine harvester that harvests planted grain culms in a field and performs threshing and sorting processing on the harvested grain culms using a threshing device.

1: Threshing device 2: Airframe frame (airframe)
3: Travel device (travel control unit)
19: Karaoke 24: Oscillating sorting device 26: First product collection section 27: Second product collection section 32: Second product reduction device 38: First chaff sieve (chaff sieve)
39: 2nd Chaff Sheave (Chaff Sheave)
41: Threshing section 42: Sorting section 60: First product sensor 70: Second product sensor 80 Parameter determining section 90: Control unit 91: Notification section

Claims (5)

one threshing section that threshes crops; one sorting section that is provided below the threshing section over a front and back range and that sorts the threshed material leaking from the threshing section; and the sorting section a first- product recovery section provided below the sorting section and collecting the first product from the sorted products sorted by the sorting section; and a first-product collection section provided below the sorting section and downstream in the transport direction of the threshed products on the side, a second item collection unit that collects second items from the sorted items, and a second item return device that returns the second items collected by the second item recovery unit to the sorting unit. equipped with a threshing device having ,
The sorting section includes a swinging sorting device,
The rocking sorting device includes a chaff sieve that has a plurality of chaff flips arranged along the conveyance direction of the threshed material and can change the degree of leakage opening by changing the posture of the plurality of chaff flips. ,
a first thing sensor that measures the first thing collection amount as the first thing collection amount;
a second object sensor that measures the amount of reduction of the second object as the amount of reduction of the second object;
a parameter determining unit that determines a control parameter for the threshing device according to a ratio of the second product return amount to the first product recovery amount;
a control unit that changes the leakage opening degree of the chaff sheave based on the control parameter;
Equipped with
The chaff sheave is a combine harvester in which the larger the ratio, the larger the leakage opening degree . The sorting section includes a winnowing machine ,
The combine harvester according to claim 1, wherein the winnower increases the amount of sorting air as the ratio increases. Equipped with a travel control unit that controls the flight of the aircraft,
3. The traveling control unit reduces the traveling speed of the aircraft when the ratio does not become smaller even when the leakage opening degree is increased and the air volume is increased. combine harvester. 3. The travel control unit stops the aircraft when the leakage opening degree is increased and the ratio does not become smaller by the time a preset time elapses after the air volume is increased. The combine harvester described in. The combine according to any one of claims 2 to 4, further comprising a notification unit that provides notification when the ratio does not become smaller even when the leakage opening degree is increased and the air volume is increased. .

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