JP2022007072A - combine - Google Patents

Abstract

To provide a combine capable of appropriately measuring an amount of threshed materials.SOLUTION: A combine includes a thresher 1 having a threshing part 41 for threshing crops, a sorting part 42 provided below the threshing part 41 for sorting threshed materials leaking down from the threshing part 41, a first material collection part for collecting a first material of the sorted materials sorted by the sorting part 42, a second material collection part for collecting a second material of the sorted materials, and a second material reduction device for reducing the second material collected by the second material collection part to the sorting part 42. The combine includes a first material sensor 60 for measuring a collection amount of the first material as a first material collection amount, a second material sensor 70 for measuring a reduction amount of the second material as a second material reduction amount, and a correction part 82 for correcting the first material collection amount by the first material sensor 60 with the second material reduction amount by the second material sensor 70.SELECTED DRAWING: Figure 10

Description

The present invention relates to a combine that cuts a planted grain culm in a field and performs a threshing sorting process of the cut grain culm by a threshing device.

The combine harvests the planted culms, threshs and sorts the harvested culms, and transports the obtained grains (sorted products) to a grain tank for storage. If the harvested culm is not properly threshed, the grain will be damaged. Further, if the sorting is not performed properly, foreign substances such as impurities other than grains are mixed in the sorting processed product. As a result, it is not possible to obtain grains of appropriate quality.

Therefore, for example, the combine described in Patent Document 1 is provided with a temporary storage unit inside the grain tank, and is provided with a camera for photographing the sorted material stored in the temporary storage unit, and is obtained by analyzing the photographed image. Various settings such as a threshing device are adjusted based on the sorting accuracy of the grain (mixture of foreign matter, etc.).

Japanese Unexamined Patent Publication No. 2019-10075

However, in the combine described in Patent Document 1, the sorted product transported to the grain tank by the transport device and thrown into the storage section is supported at the rear portion (position away from the throwing section) of the grain tank. Various settings such as a grain harvester are adjusted based on the captured image captured in the temporary storage section. Therefore, for example, if there is a threshed product that is not transported to the temporary storage unit because at least a part of the threshed product that has been threshed by the threshing device stays in the threshing device, the above setting should be appropriately made. I can't.

Therefore, a combine capable of appropriately measuring the amount of the threshed product is required.

The characteristic composition of the combine according to the present invention is composed of a threshing section for threshing crops, a sorting section provided below the threshing section for sorting the threshed product leaking from the threshing section, and the sorting section. Collected by the first item collection unit that collects the first item of the selected sorted items, the second item collection unit that collects the second item of the selected items, and the second item collection unit. A threshing device having a second product reduction device for reducing the second product to the sorting unit, and a first product sensor for measuring the recovery amount of the first product as the first product recovery amount, and the above-mentioned The second product sensor that measures the reduction amount of the second product as the second product reduction amount and the first product recovery amount by the first product sensor are corrected by the second product reduction amount by the second product sensor. The point is that it has a correction unit.

With such a characteristic configuration, the detection result of the first product sensor is corrected based on the second product reduction amount, so that an accurate first product recovery amount can be obtained. Therefore, it is possible to appropriately measure the amount of the threshed product.

Further, the correction unit corrects by adding the second product reduction amount to the first product recovery amount from the start of the harvesting work in the work target area until the first product recovery amount reaches a predetermined amount. Suitable.

From the start of crop harvesting work in the work area until the first product recovery amount reached a predetermined amount (predetermined value), the first product recovery amount gradually increased and the second product reduction amount increased sharply. Later, it is known to gradually decrease. Therefore, in this configuration, the correction unit is detected by the first product sensor from the start of the crop harvesting work in the work target area until the first product recovery amount reaches the predetermined amount (predetermined value). Since the detection result of the first product sensor is corrected by adding the second product reduction amount to the product recovery amount, it is possible to obtain an accurate first product recovery amount.

Further, it is preferable that the correction unit corrects by subtracting the reduction amount of the second product from the recovery amount of the first product after cutting through the work target area.

It is known that after cutting through the work area (after a predetermined time has passed since cutting through), the amount of the first product recovered increases sharply, then gradually decreases, and the amount of the second product reduced gradually decreases. ing. Therefore, in this configuration, after cutting through the work target area, the correction unit subtracts the second product reduction amount from the first product recovery amount detected by the first product sensor, and the detection result of the first product sensor. Is corrected, so it is possible to obtain the most accurate recovery amount.

It is the whole right side view of the combine. It is the whole plan view of a combine. It is a vertical sectional left side view of a threshing device. It is a front view of a grain tank, a grain frying device, and a threshing device. It is a vertical sectional right side view of a grain frying device. It is a layout drawing of the 2nd thing sensor and the 2nd thing discharge port. It is a layout drawing of the 2nd thing sensor and the 2nd thing discharge port. It is a layout drawing of the 2nd thing sensor and the 2nd thing discharge port. It is a side view of the second thing sensor. It is a block diagram which shows the functional part which concerns on the measurement of the amount of threshing processed matter. It is a figure which shows the detection result of the 1st substance recovery amount and the 2nd substance reduction amount.

The combine according to the present invention is configured to be able to appropriately store grains selected from threshed crops. Hereinafter, the combine of the present embodiment will be described by taking a normal combine as an example.

FIG. 1 is a right side view of the combine, and FIG. 2 is a plan view of the combine. Here, in order to facilitate understanding, in the present embodiment, unless otherwise specified, "front" (direction of arrow F shown in FIG. 1) means front in the front-rear direction (traveling direction) of the aircraft, and " "Rear" (direction of arrow B shown in FIG. 1) means rearward in the front-rear direction (traveling direction) of the aircraft. Further, "up" (direction of arrow U shown in FIG. 1) and "down" (direction of arrow D shown in FIG. 1) are positional relationships in the vertical direction (vertical direction) of the aircraft, and are relative to the ground height. It shall indicate the relationship. Further, the left-right direction or the lateral direction is the aircraft crossing direction (aircraft width direction) orthogonal to the aircraft front-rear direction, that is, "left" (direction of arrow L shown in FIG. 2) and "right" (arrow R shown in FIG. 2). Direction) shall mean the left and right directions of the aircraft, respectively.

The combine includes a crawler-type traveling device 3, an aircraft frame 2 supported by the traveling device 3, a cutting section 4 for cutting field crops (various crops such as rice, wheat, soybeans, and rapeseed), and a feeder 11. , A grain harvester 1, a grain tank 12, and a grain discharge device 14 are provided.

The cutting unit 4 includes a scraping reel 5 for scraping crops, a clipper-type cutting device 6 for cutting crops in a field, and an auger 7 for laterally feeding the cut crops to a feeder 11. The crops cut by the cutting unit 4 are transported to the threshing device 1 by the feeder 11 and threshed and sorted by the threshing device 1. The sorted product that has been threshed and sorted by the threshing device 1 is stored in the grain tank 12, and is appropriately discharged to the outside of the machine by the grain discharging device 14.

A driving unit 9 is provided on the right rear side of the cutting unit 4 in a side-by-side manner with the feeder 11. The driving unit 9 is covered by the cabin 10. An engine room ER is provided below the driving unit 9, and an engine E, a cooling fan, a radiator, and the like, which are not particularly shown, are housed in the engine room ER. The power of the engine E is transmitted to a working device such as a traveling device 3, a cutting unit 4, and a threshing device 1 by a power transmission mechanism (not shown).

Next, the configuration of the threshing device 1 will be described with reference to the left side view of the vertical section of the threshing device 1 shown in FIG. The threshing device 1 is provided on the machine frame 2 and includes a threshing unit 41 for threshing crops by a handling cylinder 22 and a sorting unit 42 for rocking and sorting the threshed product. The threshing unit 41 is arranged in the upper region of the threshing device 1, a receiving net 23 is provided below the threshing unit 41, and a sorting unit 42 is provided below the receiving net 23. The sorting unit 42 sorts the threshed product leaked from the receiving net 23 into a sorting product containing grains to be collected and a waste product such as straw.

The threshing unit 41 includes left and right side walls of the threshing device 1, a top plate 53, and a handling chamber 21 surrounded by a receiving net 23. The handling chamber 21 is provided with a handling cylinder 22 for threshing crops by rotation and a plurality of dust feeding valves 53a. The crops transported by the feeder 11 are put into the handling chamber 21 and threshed by the handling cylinder 22. The crops carried by the handling cylinder 22 are transferred backward by the feeding action of the dust valve 53a.

The dust valve 53a has a plate shape and is provided on the inner surface (lower surface) of the top plate 53 at predetermined intervals along the front-rear direction. The dust valve 53a is provided in a posture of being inclined with respect to the rotation axis X in a plan view. Therefore, each dust feeding valve 53a exerts a force to move the harvested culm that rotates together with the handling cylinder 22 to the rear side in the handling chamber 21. Further, the dust feed valve 53a can adjust the inclination angle with respect to the rotation axis X. The speed at which the crop is sent backward in the handling cylinder 22 is determined by the inclination angle of the dust sending valve 53a. The threshing efficiency at which the crop is threshed is also affected by the speed at which the crop is sent through the handling barrel 22. As a result, the processing capacity at which the crop is threshed can be adjusted using various means, but changing the tilt angle of the dust valve 53a can be adjusted as one means. Although not shown in particular, a dust valve control mechanism capable of changing and controlling the tilting posture of the dust valve 53a is provided, and the tilt angle of the dust valve 53a can be automatically changed.

The threshing device 1 includes a first item recovery unit 26, a second item collection unit 27, and a second item reduction device 32. The sorting unit 42 includes a swing sorting device 24 having a sheave case 33 and a wall insert 19.

The wall insert 19 is provided in the lower region of the front region of the sorting unit 42, and generates a sorting wind from the front side to the rear of the rocking sorting device 24 along the transport direction of the processed material. The sorting wind has a function of sending out straw and the like having a relatively light specific density toward the rear side of the sheave case 33. Further, in the swing sorting device 24, the sheave case 33 swings due to the swing drive mechanism 43, so that the threshing processed product inside the sheave case 33 is transferred backward and the swing sorting process is performed. For this reason, in the following description, in the swing sorting device 24, the upstream side in the transport direction of the processed material is referred to as a front end or a front side, and the downstream side is referred to as a rear end or a rear side. The strength (air volume, wind speed) of the wall insert 19 can be changed. When the sorting wind is strong, the threshed product can be easily sent backward and the sorting speed becomes high. On the contrary, when the sorting wind is weakened, the threshed product stays in the sheave case 33 for a long time, and the sorting accuracy is improved. 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 wind of the wall insert 19. Although not shown in particular, a wall insert control mechanism capable of changing and controlling the strength of the sorting wind of the wall insert 19 is provided, and the strength of the wall insert 19 can be automatically changed.

The first half of the sheave case 33 is provided with a first chaff sheave 38, and the second half of the sheave case 33 is provided with a second chaff sheave 39. Although not particularly described because it has a general configuration, the sheave case 33 is provided with a grain pan and a grain sheave 40 in addition to the first chaff sheave 38 and the like. The threshed product leaking from the receiving net 23 falls on the first chaff sheave 38 and the second chaff sheave 39. Most of the threshed product leaks from the receiving net 23 to the first half portion of the sheave case 33 including the first chaff sheave 38, and is roughly sorted and finely sorted by the first half portion of the sheave case 33. Some of the threshed products leaked from the receiving net 23 to the second chaff sheave 39, or were transferred to the second chaff sheave 39 without leaking at the first chaff sheave 38, so that the second chaff sheave 39 was transferred. Is sorted out for leaks.

Below the first chaf sheave 38, the above-mentioned grain sheave 40 is provided. That is, the swing sorting device 24 includes a grain sheave 40 provided below the first chaff sheave 38. The grain sheave 40 is composed of a porous member such as a punching metal or a net body, and receives and sorts the threshed product leaked from the first chaff sheave 38.

A screw-type first item collection unit 26 is provided below the front half portion of the sheave case 33, and a screw-type second item collection unit 27 is provided below the second half portion of the sheave case 33. The first product that has been sorted and leaked by the first half of the sheave case 33, that is, the first product among the sorted products sorted by the sorting unit 42, is collected by the first product collection unit 26. It is transported toward the side of the grain tank 12 (right side in the left-right direction of the machine body). The second product that has been sorted and leaked by the latter half of the sheave case 33 (second chaff sheave 39) (generally, the sorting treatment accuracy is low and the ratio of cut straw etc. is high), that is, among the sorted products. The second product is collected by the second product collection unit 27. The second product corresponds to the threshed product that was not selected as the threshed product among the threshed products. The second product collected by the second product collection unit 27 is reduced to the front portion of the sorting unit 42 by the second product reducing device 32, and is re-sorted by the sheave case 33.

The first chaf sheave 38 is provided with a plurality of plate-shaped chaflip provided side by side along the transfer (transport) direction (front-back direction) of the threshed product. Each chaflip is arranged in an inclined posture toward the rear end side diagonally upward. The tilt angle of the chaflip is variable, and the steeper the tilt angle, the wider the distance between adjacent chaflips, and the easier it is for the threshed product to leak. That is, the leakage opening degree can be changed by changing the postures of the plurality of chaflip. Therefore, the sorting efficiency (sorting accuracy and sorting speed) of the swing sorting device 24 can be adjusted by adjusting the tilt angle of the chaflip. 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 has the same configuration as the first chaff sheave 38. An angle control mechanism capable of changing and controlling the tilting posture of the chaflip of the second chaf sheave 39 is also provided, and the tilting angle of the chaflip can be automatically changed.

FIG. 4 is a front view of the grain tank 12, the grain raising device 29, and the threshing device 1, and FIG. 5 is a vertical sectional right side view of the grain raising device 29. As shown in FIGS. 4 and 5, a grain raising device 29 is provided for transporting the sorted processed product collected by the first product collecting unit 26 to the grain tank 12. The grain frying device 29 is arranged between the threshing device 1 and the grain tank 12, and is erected in a posture along the vertical direction. The grain frying device 29 is composed of a bucket type conveyor. The sorting processed product transported by the grain raising device 29 is delivered to the lateral feed transport device 30 at the upper end portion of the grain raising device 29. The lateral feed transport device 30 is configured in a screw type, and is thrust into the inside of the grain tank 12 from the wall portion on the left side of the front portion of the grain tank 12. A grain release device 30A is provided at the end of the lateral feed transfer device 30 on the inner side of the tank. The grain releasing device 30A includes a plate-shaped releasing rotating body 30B, which rotates integrally with the screw portion. The sorted product is laterally fed by the lateral feed transport device 30, and finally thrown into the grain tank 12 by the grain release device 30A.

In the grain raising device 29, as shown in FIGS. 4 and 5, a plurality of buckets 31 are attached to the outer peripheral side of the endless rotating chain 29C wound over the drive sprocket 29A and the driven sprocket 29B at regular intervals. There is. The grain raising device 29 includes a feeding path 29D in which the bucket 31 containing the sorting processed product rises, and a return path 29E in which the bucket 31 descends after discharging the sorted processed material into the lateral feed transport device 30. The feed path 29D and the return path 29E are arranged side by side along the left side wall 12b of the grain tank 12 so that the feed path 29D is on the rear side.

The first item sensor 60 measures the recovered amount of the first item as the recovered amount of the first item (see FIG. 10). The first material sensor 60 is located at any position in the transport path where the sorted material is transported from the first product collection unit 26 to the grain tank 12, specifically, the sorted product is the grain from the first product collection unit 26. It is arranged so as to measure the amount of the sorted product at any position up to the throwing port 30C thrown into the grain tank 12. The first object sensor 60 can be configured to detect the amount of the sorted object by using, for example, a physical contact type sensor. Alternatively, the result of the map sensor generated by associating the recovery amount of the first item with the map information indicating the map of the field may be used, for example, at any position from the first item collection unit 26 to the throwing port 30C. A camera is provided, and an image of the first thing in the first item collection unit 26 taken by the camera, an image of the grains falling downward from the handling cylinder 22 of the grain removal device 1, and a sheave case 33 of the grain removal device 1 are provided. The best thing based on the captured image of the grains falling downward from, the captured image of the grains thrown into the grain tank 12, the captured image of the grains transported by the bucket 31 and the like. The recovered amount may be measured (estimated). Further, the recovery amount of the first item may be measured (estimated) by using the load (torque or the like) of the screw of the first item recovery unit 26.

As described above, the second product is reduced to the upstream side, which is the front portion of the rocking sorting device 24, by the second product reducing device 32. Specifically, the second product discharge port 32A of the second product reduction device 32 is located at a position outside the radial direction in the arc-shaped receiving net 23 (the second material is on the side of the receiving net 23, and the second product is the receiving net 23). It is provided at a position that does not pass through), and the second item is discharged at this position. The threshing device 1 is provided with a second product sensor 70 that measures the reduction amount of the second product thus reduced as the second product reduction amount. 6-9 show an arrangement of such a second product discharge port 32A.

In the present embodiment, as shown in FIG. 6, the second product discharge port 32A is provided toward the receiving net 23 side. As shown in FIGS. 7 and 8, a rotary blade 32B that rotates together with a screw constituting the second product reduction device 32 is provided in the vicinity of the second product discharge port 32A, and is conveyed by the second product reduction device 32. The second product is discharged radially outward from the second product discharge port 32A by the rotary blade 32B through the insertion hole formed in the side wall 50 of the threshing portion 41 (as shown by the broken line arrow in FIG. 8). Ru).

The second product discharge port 32A is provided with a guide portion 32C that guides the released second product toward the upper side in the processing object transfer direction of the swing sorting device 24. The guide portion 32C is configured to have a shape showing a part of a cylinder having an inner peripheral surface facing the second object discharge port 32A. In other words, it has a shape in which the strip is bent into an arc shape. The inner peripheral surface of the guide portion 32C regulates the discharge direction of the second object discharged by the rotary blade 32B.

As shown in FIGS. 7 and 8, the second sensor 70 is supported by the inner side portion of the side wall 50 in the threshing section 41. The second product sensor 70 is configured to measure the amount of reduction of the second product that is reduced in contact with the second product released by the rotary blade 32B in the second product reduction device 32. The second object sensor 70 is located on the emission extension of the second object emitted by the second object reduction device 32 and swings when the released second object comes into contact with the swing arm 72 and swings. A measuring unit 73 that measures the amount of reduction based on the swing angle of the arm 72, a support frame 74 that supports the measuring unit 73 and the swing arm 72, and a cover body 75 that covers the upper part of the second sensor 70 are provided. ing.

The measurement unit 73 has a potentiometer built in the case, and is fastened and fixed to the inner side of the support frame 74 with bolts. The measuring unit 73 is provided with the rotating shaft 76 protruding outward (on the side wall 50 side) through the support frame 74, and the swing arm 72 is attached to the rotating shaft 76 so as to be integrally rotatable. The swing arm 72 extends downward from the rotation shaft 76, and is provided in a state of being located in a guide path in which the second object is guided by the guide portion 32C. The swing arm 72 is swingably supported around the axis of the rotating shaft 76.

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

As shown in FIG. 9, the swing arm 72 has an extending portion extending above the rotating shaft 76, and a coil spring 78 is stretched over the extending portion and the spring receiving portion 77. The swing arm 72 is swing-forced so as to approach the second discharge port 32A by the pulling force of the coil spring 78. The upper end of the swing arm 72 abuts on the locking portion 79, and the position of the swing arm 72 is held in a downward standby posture against the force of the spring.

When the second object discharged by the rotary blade 32B through the second object discharge port 32A comes into contact with the swing arm 72, the swing arm 72 resists the urging force of the coil spring 78 due to the pressing force of the second object discharge port 32A. Swings in the direction away from. The swing angle at this time is measured by the measuring unit 73, and the reduction amount of the second product 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 reduction amount in the measuring unit 73, and calculate the reduction amount based on the map or formula.

FIG. 10 is a block diagram showing a functional unit related to control for accurately acquiring the measurement result by the first object sensor 60 and the measurement result by the second object sensor 70. Further, FIG. 11 is an example of the recovery amount of the first substance, the reduction amount of the second cylinder, and the detection amount in the present embodiment. As shown in FIG. 10, the measurement result by the first object sensor 60 and the measurement result by the second object sensor 70 are transmitted to the measurement result acquisition unit 81. The correction unit 82 refers to the measurement result acquisition unit 81, and corrects the amount of the first item collected by the first item sensor 60 with the amount of the second item reduced by the second item sensor 70.

Specifically, the correction unit 82 corrects by adding the second product reduction amount to the first product recovery amount from the start of the harvesting work in the work target area until the first product recovery amount reaches a predetermined amount. .. The work target area is an area where the combine harvests crops in the field. As shown in FIG. 11, the most recovered amount is from the start of the crop harvesting work until the most recovered amount reaches a predetermined amount (predetermined value), that is, from the start of cutting to t1 in FIG. It gradually increases, and the amount of secondary product reduction increases sharply (steeply) and then gradually decreases. Therefore, the correction unit 82 corrects the detection result of the first object sensor 60 by adding the second object reduction amount to the first object recovery amount detected by the first object sensor 60 from the start of cutting to t1.

On the other hand, after cutting through the work target area, the correction unit 82 corrects by subtracting the second product reduction amount from the first product recovery amount. After cutting through the work target area, it means after the harvesting unit 4 of the combine has run through the area where the crop is cut in the field. In such a state, as shown in FIG. 11, after t2 after a predetermined time has passed from cutting, the most recovered amount increased sharply (steeply) and then gradually decreased. The amount of product reduction gradually decreases. Therefore, the correction unit 82 detects the first item sensor 60 by subtracting the second item reduction amount from the first item recovery amount detected by the first item sensor 60 after t2 after a predetermined time has elapsed from cutting. Correct the result.

The first item recovered amount corrected by the correction unit 82 is transmitted to the control unit 83. The control unit 83 controls the threshing device 1 based on the corrected first product recovery amount and second product reduction amount. Specifically, in the control unit 83, if the recovery amount of the first substance exceeds the first threshold value and the reduction amount of the second substance is equal to or less than the second threshold value, the first chaf sheave 38 and the second chaff sheave in the sorting unit 42 The leakage opening of at least one of 39 is reduced. As a result, the amount of the first product recovered can be reduced, the amount of the second product reduced can be increased, the amount of the threshed product sorted by the threshing apparatus 1 can be increased, and the sorting accuracy can be further improved. Therefore, it is possible to reduce the amount of impurities mixed in the first substance.

Further, in the control unit 83, it is preferable to increase the leakage opening degree of the chaff sheave when the recovery amount of the most object becomes smaller than the third threshold value smaller than the preset first threshold value. This makes it possible to increase the most recovered amount when the first recovered amount is equal to or less than a predetermined amount.

Further, in some cases, even when the leakage opening degree of the first chaff sheave 38 and the second chaff sheave 39 is reduced, the state in which the most recovered amount is larger than the first threshold value continues, or It is assumed that the ratio of the secondary product reduction amount to the continuous state where the secondary product reduction amount is below the second threshold value does not decrease, but this is because the amount of crops supplied to the threshing device 1 is large. Due to passing. Therefore, even when the leakage opening degree of the first chaff sheave 38 and the second chaff sheave 39 is increased, the traveling control of the machine frame 2 is performed particularly when the secondary reduction amount is larger than the second threshold value. It is preferable that the device 3 reduces the traveling speed of the airframe frame 2. As a result, the amount of crops supplied to the threshing device 1 can be reduced, and the threshing amount and sorting amount in the threshing device 1 can be reduced. Therefore, for example, when the threshed product is clogged in the Glen Sheave 40, it is possible to eliminate the clogged state of the threshed product when the amount of reduction of the second product is increased.

Such a traveling device 3 can also be configured to automatically travel the machine frame 2. In such a case, it is possible to reduce the traveling speed of the airframe frame 2 or stop the vehicle based on the first threshold value and the second threshold value.

Further, for an unexpected reason, the ratio of the second product reduction amount to the first product recovery amount from the time when the leakage opening degree of the first chaf sheave 38 and the second chaf sheave 39 is increased to the time when a preset time elapses. When the ratio of the second product reduction amount to the first product recovery amount does not decrease by the time when the preset time elapses after the traveling speed of the machine frame 2 is reduced, the traveling device 3 Is preferable to stop the airframe frame 2. As a result, 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, at present, it is possible to process the crop in the threshing device 1 and eliminate the state in which the threshed product in the Glenshive 40 is clogged.

When the tilting posture of the dust feed valve 53a can be changed, it is also possible to change the tilting angle based on the first flow rate and the second reduction amount.

[Other embodiments]
In the above embodiment, the correction unit 82 corrects by adding the second product reduction amount to the first product recovery amount from the start of the harvesting work in the work target area until the first product recovery amount reaches a predetermined amount. However, the correction unit 82 has set a preset value (constant value or calculation) for the most recovered amount from the start of the harvesting work in the work target area until the first recovered amount reaches a predetermined amount. It is also possible to configure it so that it is corrected by adding a value).

In the above embodiment, the correction unit 82 has described that after cutting through the work target area, the correction unit 82 corrects by subtracting the second product reduction amount from the first product recovery amount, but the correction unit 82 corrects the work target area. After cutting, it is possible to correct by subtracting a preset value (constant value or calculated value) from the most collected amount.

In the above embodiment, the example where the combine is a normal combine has been described, but the combine may be a head-feeding combine.

INDUSTRIAL APPLICABILITY The present invention can be used for a combine that cuts a planted grain culm in a field and performs a threshing sorting process of the cut grain culm by a threshing device.

1: Threshing device 26: First item recovery unit 27: Second item collection unit 32: Second item reduction device 41: Threshing unit 42: Sorting unit 60: First item sensor 70: Second item sensor 82: Correction unit

Claims (3)

One of a threshing section for threshing crops, a sorting section provided below the threshing section for sorting the threshed product leaking from the threshing section, and a sorting process sorted by the sorting section. The first item collection unit that collects the products, the second item collection unit that collects the second item among the sorting processed items, and the second item collection unit that collects the second item from the second item collection unit is the sorting unit. Equipped with a threshing device that has a second product reduction device that reduces to
The first thing sensor that measures the recovery amount of the first thing as the first thing recovery amount,
A second product sensor that measures the reduction amount of the second product as the second product reduction amount, and
A correction unit that corrects the amount of the first item collected by the first item sensor with the amount of reduction of the second item by the second item sensor.
Combine with. The claim that the correction unit corrects by adding the second product reduction amount to the first product recovery amount from the start of the harvesting work in the work target area until the first product recovery amount reaches a predetermined amount. The combine according to 1. The combine according to claim 1 or 2, wherein the correction unit corrects by subtracting the reduction amount of the second product from the recovery amount of the first product after cutting through the work target area.

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