CN116419669A - Combine harvester, estimating system, estimating method, estimating program, and recording medium - Google Patents

Abstract

A combine harvester is provided with: a threshing device for threshing crops; a grain tank for storing grains obtained by the threshing device; a conveying device for conveying the grains obtained by the threshing device from the threshing device to the grain box; a flow rate measuring device (81A) for measuring the flow rate (Fv 1) of the grain transported by the transporting device; a yield receiving unit (85) for receiving a specific yield value (Vd); and a work amount estimation unit (84) for estimating the amount of work required for the yield (Vi) of the grain obtained by the harvesting operation to reach a specific yield value (Vd) based on the flow rate (Fv 1).

Description

Combine harvester, estimating system, estimating method, estimating program, and recording medium

Technical Field

The present invention relates to a combine harvester, an estimation system, an estimation method, an estimation program, and a recording medium, each of which includes a conveyor for conveying grains obtained by a threshing device from the threshing device to a grain box, and a flow rate measuring device for measuring a flow rate of the grains conveyed by the conveyor.

Background

For example, in a combine disclosed in japanese patent application laid-open No. 2019-216744 (patent document 1), the yield of grains stored in a grain bin (a "grain collection bin" in patent document 1) is detected (a "harvest amount" in patent document 1), and a position in the field where the grain bin is full is predicted based on the yield. As shown in japanese patent application laid-open No. 2020-000107 (patent document 2), the yield of grains is detected by a load cell (weight detector in patent document 2) that measures the weight of a grain box (the "grain box" in patent document 2).

Prior art literature

Patent literature

Patent document 1 Japanese patent application laid-open No. 2019-216744

Patent document 2 Japanese patent application laid-open No. 2020-000107

Disclosure of Invention

Problems to be solved by the invention

However, in the combine disclosed in japanese patent application laid-open No. 2019-216744, the position of the grain box in the field is predicted to be full based on the yield, but for example, even before the grain box is full, a case is considered in which various operations based on a specific yield (for example, a discharge operation of grains, a maintenance operation according to the yield) are required. Therefore, a configuration capable of estimating the work amount up to a specific yield is desired. In order to estimate the amount of work until a specific yield is reached, it is important to accurately detect the yield. However, in the case of the structure shown in japanese patent application laid-open No. 2020-000107, the detection value of the load cell may be different depending on the storage mode of grains in the grain bin (for example, when the grains are stored in a front-rear direction or a left-right direction), and thus it is a problem to improve the detection accuracy of the yield.

The invention aims to provide a combine harvester capable of estimating the work amount reaching a specific yield corresponding to the requirement with high precision.

Means for solving the problems

The combine harvester of the invention is characterized in that the combine harvester comprises: a threshing device for threshing crops; a grain box storing grains obtained by the threshing device; a conveying device that conveys grains obtained by the threshing device from the threshing device to the grain box; a flow rate measuring device that measures a flow rate of grain conveyed by the conveying device; a yield receiving unit that receives a specific yield value; and a work amount estimating unit that estimates, based on the flow rate, a work amount required for the yield of grains obtained by the harvesting operation to reach the specific yield value.

In the present invention, since the yield receiving unit is provided, for example, an operator or a manager can specify a specific yield corresponding to a demand via the yield receiving unit. Therefore, according to the present invention, for example, even before the grain box is filled, the amount of work required for various operations (for example, a discharge operation of grains and a maintenance operation according to the yield) based on a specific yield can be estimated. The flow rate of the grain transported by the transport device is measured by the flow rate measuring device, and the amount of work required to reach the specific yield value is estimated based on the flow rate. That is, the work amount can be estimated without being left or right by the accumulation method of grains in the grain box (for example, by accumulating the grains in one of the front and rear sides and the left and right sides). Thus, a combine harvester capable of accurately estimating the work amount up to a specific yield corresponding to the demand can be realized.

The technical features of the harvester described above can also be applied to the reckoning system. The estimation system in this case is characterized by comprising: a flow rate measuring device for measuring the flow rate of the grain transported from the threshing device to the grain tank via the transporting device; a yield receiving unit that receives a specific yield value; and a work amount estimating unit that estimates the work amount required for the yield of grains obtained by harvesting work to reach the specific yield value, based on the flow rate.

The technical features of the harvester described above can also be applied to the estimation method. The estimation method in this case is characterized by comprising: a flow rate measurement step of measuring a flow rate of grain transported from the threshing device to the grain tank via the transport device; a yield reception step of receiving a specific yield value; and a work amount estimating step of estimating the work amount required for the yield of grains obtained by the harvesting work to reach the specific yield value, based on the flow rate.

The technical features of the harvester described above can also be applied to the calculation procedure. A recording medium such as an optical disc, a magnetic disc, and a semiconductor memory, in which the estimation program having the technical features is recorded, is also included in the technical features described above. The estimation program in this case is characterized by causing a computer to execute: a flow rate measurement function for measuring a flow rate of grain transported from the threshing device to the grain tank via the transport device; a yield reception function for receiving a specific yield value; and a work amount estimating function of estimating the work amount required for the yield of grains obtained by harvesting work to reach the specific yield value, based on the flow rate.

In the present invention, it is preferable that the work amount estimating unit estimates the yield by accumulating the flow rate.

According to this configuration, the yield is calculated by accumulating the flow rate, and therefore the yield can be calculated regardless of the accumulation mode of grains in the grain box (for example, the accumulation mode is deviated to the front and rear, left and right, or the like). Therefore, for example, the accuracy of detecting the yield is improved compared with a configuration in which the yield of grains is measured by measuring the weight of the grain tank with a load cell.

In the present invention, it is preferable that the work amount estimating unit calculates an average yield per unit time based on the flow rate, and calculates a work time by dividing a value obtained by subtracting the yield from the specific yield value by the average yield as the work amount. In the present invention, it is preferable that the work load estimating unit calculates an average yield per unit travel distance based on the flow rate, and calculates a work travel distance as the work load by dividing a value obtained by subtracting the yield from the specific yield value by the average yield.

With this configuration, the operator and the manager can plan the harvesting work in the field based on at least one of the work time and the work travel distance estimated as the work amount.

In the present invention, it is preferable that the work amount is a work amount until grains corresponding to the specific yield value are stored in the grain box.

According to this configuration, since the work amount is estimated based on the stored state of grains in the grain box, the operator and the manager can plan a specific work such as a discharge work of grains and a harvesting work until the specific work is required.

In the present invention, the flow rate measurement device preferably includes: an arm which swings in contact with the conveyed grain; a sensor unit for detecting the swing angle of the arm unit; and a calculation unit that calculates the flow rate based on the swing angle detected by the sensor unit.

According to this configuration, when the grain comes into contact with the arm, the arm swings, and the swing angle of the arm is detected by the sensor unit. In the case where the arm resonates due to vibration of the combine, if the arm is configured to detect a load applied to the arm by a sensor unit (for example, a load cell), for example, the influence of the resonance on the detection of the load by the sensor unit is likely to be large. On the other hand, even if the arm resonates, the arm does not swing due to the resonance alone, and therefore if the sensor section detects the swing angle of the arm, the resonance has little influence on the detection of the swing angle of the sensor section. Therefore, for example, compared with a configuration in which the sensor portion detects the load applied to the arm portion, the flow rate measurement device is less susceptible to the vibration of the combine harvester. That is, since the magnitude of the swing angle of the arm is less likely to be affected by the vibration of the combine harvester, the calculating unit can calculate the flow rate of the grain with high accuracy from the magnitude of the swing angle. Thus, the flow rate measuring device can detect the yield of grains with high accuracy.

Drawings

Fig. 1 is an overall right side view of a combine harvester.

Fig. 2 is an overall top view of the combine harvester.

Fig. 3 is a longitudinal cross-sectional left side view of the threshing device.

Fig. 4 is a front view of the grain bin, the grain lifting apparatus, and the threshing apparatus.

Fig. 5 is a right side view of a grain lifting apparatus showing a disposable processing set sensor in longitudinal section.

Fig. 6 is a plan view showing the disposable-based sensor.

Fig. 7 is a longitudinal sectional view of the disposable processing set sensor as seen in the front-rear direction of the body.

Fig. 8 is a right side view of the grain lifting apparatus in longitudinal section showing a state in which the primary treatment object sensor detects grains.

Fig. 9 is a right side view of the grain lifting apparatus in longitudinal section showing a state in which the primary treatment object sensor detects grains.

Fig. 10 is a layout diagram of the secondary processed object sensor and the secondary processed object discharge port.

Fig. 11 is a layout diagram of the secondary processed object sensor and the secondary processed object discharge port.

Fig. 12 is a layout diagram of the secondary processed object sensor and the secondary processed object discharge port.

Fig. 13 is a side view of a secondary treatment object sensor.

Fig. 14 is a right side view in longitudinal section of the grain lifting apparatus showing a state where the bucket is in contact with the peak.

Fig. 15 is a right side view in longitudinal section of the grain lifting apparatus showing a state where the bucket is in contact with the peak.

Fig. 16 is a right side view of the grain lifting apparatus in a longitudinal section showing a state where the bucket is in contact with the peak.

Fig. 17 is a block diagram showing a functional unit involved in estimating the work amount and measuring the amount of the threshing processed product.

Fig. 18 is a graph showing the detection results of the amount of recovered primary treated material and the amount of returned secondary treated material.

Fig. 19 is a diagram showing a control state related to the threshing control.

Fig. 20 is a side view showing the grain bin side wall of the primary treatment sensor in the semi-fed combine harvester.

Fig. 21 is a diagram showing the detection results of the amount of recovered primary treated material and the amount of returned secondary treated material.

Fig. 22 is a block diagram showing a functional unit involved in estimating the work amount and measuring the amount of the threshing processed product.

Detailed Description

The combine harvester according to the present invention is configured to be able to appropriately store grains sorted from a crop being threshing. Hereinafter, a general combine harvester will be described by taking a combine harvester according to the present embodiment as an example.

Fig. 1 is a right side view of the combine and fig. 2 is a top view of the combine. Here, for ease of understanding, in the present embodiment, "front" (direction of arrow "F" shown in fig. 1) means front in the machine body front-rear direction (traveling direction), and "rear" (direction of arrow "B" shown in fig. 1) means rear in the machine body front-rear direction (traveling direction), unless otherwise specified. The "upper" (in the direction of arrow "U" shown in fig. 1) and "lower" (in the direction of arrow "D" shown in fig. 1) are positional relationships in the vertical direction (vertical direction) of the machine body, and represent relationships in the above-ground height. The left-right direction or the lateral direction is a machine body cross direction (machine body width direction) orthogonal to the machine body front-back direction, that is, "left" (direction of arrow "L" shown in fig. 2) and "right" (direction of arrow "R" shown in fig. 2) mean left and right directions of the machine body, respectively.

The combine is provided with a crawler-type traveling device 3, a body frame 2 supported by the traveling device 3, a harvesting part 4 for harvesting crops (various crops such as rice, wheat, soybean, and rapeseed) in a field, a feeder 11, a threshing device 1, a grain box 12, and a grain discharging device 14.

The harvesting part 4 is provided with a rake reel 5 for raking the crop, a clipper-type cutting device 6 for cutting the crop in the field, and a screw conveyor 7 for feeding the harvested crop to a feeder 11. The crop cut by the cutting unit 4 is conveyed to the threshing device 1 by the feeder 11, and subjected to threshing and sorting by the threshing device 1. The sorted product subjected to the threshing and sorting process by the threshing device 1 is stored in the grain box 12, and is appropriately discharged to the outside of the machine by the grain discharging device 14.

A driving unit 9 is provided behind the cutting unit 4 in a state of being arranged laterally to the feeder 11, and the driving unit 9 is provided in a state of being biased to the right side of the machine body. The cab 9 is covered by a cockpit 10. An engine room ER is provided below the cab 9, and the engine E is housed in the engine room ER, and a cooling fan, a radiator, and the like are housed therein, although not particularly shown. The power of the engine E is transmitted to the traveling device 3, the harvesting unit 4, the threshing device 1, and other working devices by a power transmission mechanism not shown.

A satellite positioning module 83 is provided in the cockpit 10. The satellite positioning module 83 receives a signal (including a GPS signal) from an artificial satellite (not shown) GNSS (Global Navigation Satellite System) and acquires the vehicle position. In addition, in order to supplement satellite navigation of the satellite positioning module 83, an inertial navigation unit in which a gyro acceleration sensor and a magnetic azimuth sensor are incorporated is incorporated in the satellite positioning module 83. The inertial navigation unit may be disposed in a different location from the satellite positioning module 83 in the combine harvester.

Next, the structure of the threshing device 1 will be described with reference to a vertical cross-sectional left side view of the threshing device 1 shown in fig. 3. The threshing device 1 is provided in the body frame 2, and includes a threshing section 41 for threshing crops by the threshing cylinder 22 and a sorting section 42 for oscillating sorting the threshing product. The threshing section 41 is disposed in an upper region of the threshing device 1, the screen 23 is provided below the threshing section 41, and the classifying section 42 is provided below the screen 23. The sorting unit 42 sorts the threshing processed product leaked from the screen 23 into a sorted processed product containing grains to be recovered and a waste straw or the like.

The threshing unit 41 includes a threshing chamber 21 surrounded by left and right side walls, a ceiling 53, and a screen 23 of the threshing device 1. The threshing chamber 21 is provided with a threshing cylinder 22 for threshing crops by rotation and a plurality of dust-feeding valves 53a. The threshing cylinder 22 rotates around the rotation axis X. Crop conveyed by the feeder 11 is thrown into a threshing chamber 21, and threshing is performed by a threshing cylinder 22. The crop rotated by the threshing cylinder 22 is transferred backward by the feeding action of the dust feed valve 53a.

The dust feed valve 53a is plate-shaped, and is provided on the inner surface (lower surface) of the top plate 53 at predetermined intervals in the front-rear direction. The dust feed valve 53a is provided in a posture inclined with respect to the rotation axis X in plan view. Accordingly, the dust feed valves 53a apply a force to move the threshing straw rotating together with the threshing cylinder 22 in the threshing chamber 21 to the rear side. The dust feed valve 53a can adjust the inclination angle with respect to the rotation axis X. The speed of feeding the crop to the rear in the threshing cylinder 22 is determined by the inclination angle of the dust feed valve 53 a. In addition, the threshing efficiency of the crop being threshing is also affected by the speed at which the crop is conveyed within the threshing cylinder 22. As a result, the capacity of the crop to be subjected to threshing can be adjusted by various means, but the inclination angle of the dust feed valve 53a can be adjusted by changing as one means. Although not particularly shown, a dust-feed valve control mechanism capable of changing and controlling the inclination 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 primary treated-substance collection unit 26, a secondary treated-substance collection unit 27, and a secondary treated-substance returning device 32. The sorting section 42 comprises a vibratory sorting apparatus 24 with a screening housing 33 and a winnowing machine 19.

The air separator 19 is provided in a lower region of a front region of the sorting section 42, and generates sorting air in the conveying direction of the processed objects from the front side toward the rear side of the swing sorting device 24. The classifying wind has a function of sending out waste straws and the like having a relatively light specific gravity toward the rear side of the sieving housing 33. In the swing classifying device 24, the classifying housing 33 swings by the swing driving mechanism 43, so that the threshing processed product in the classifying housing 33 is transferred backward and subjected to the swing classifying process. For this reason, in the following description, the upstream side in the conveying direction of the processed objects is referred to as the front end or the front side, and the downstream side is referred to as the rear end or the rear side in the swing sorting device 24. The air separator 19 can change the intensity (air volume, air velocity) of the separation air. When the classifying wind is increased, the threshing processed product is easily sent backward, and the classifying speed is increased. Conversely, if the classifying air is weakened, the threshing processed product stays in the classifying housing 33 longer, and the classifying accuracy is improved. Therefore, the air separator 19 can adjust the separation efficiency (separation accuracy, separation speed) of the swing separation device 24 by changing the intensity of the separation air. Although not particularly shown, a separator control mechanism capable of changing and controlling the intensity of the separation air of the separator 19 is provided, and the intensity of the separation air of the separator 19 can be automatically changed.

A first chaff screen 38 is provided in the front half of the screening housing 33 and a second chaff screen 39 is provided in the rear half of the screening housing 33. The general configuration is not particularly described, but the sifting housing 33 is provided with a grain shaking plate and a grain sifter 40 in addition to the first chaff sifter 38 and the like. The thresher substances leaked from the screen 23 fall down to the first chaff screen 38 and the second chaff screen 39. Most of the threshing processed product leaks from the screen 23 to the front half of the screen housing 33 containing the first chaff screen 38, being coarsely sorted and finely sorted by the front half of the screen housing 33. A part of the threshing processed matters is leaked from the screen 23 to the second chaff screen 39 or is transferred from the first chaff screen 38 to the second chaff screen 39 without being leaked downward, and is leaked down in the second chaff screen 39 and is sorted.

Below the first chaff screen 38 is provided the grain screen 40 described above. That is, the swing classifying device 24 includes a grain sieve 40 provided below the first chaff sieve 38. The grain sieve 40 is composed of a perforated metal, a mesh body, or the like, and receives the threshing processed objects leaked from the first chaff sieve 38 and performs separation by leakage.

A spiral primary treated material recovery portion 26 is provided below the front half of the sieving housing 33, and a spiral secondary treated material recovery portion 27 is provided below the rear half of the sieving housing 33. The primary processed product that has been sorted by the first half of the sorting housing 33 and leaked, that is, the primary processed product of the sorted processed product sorted by the sorting section 42 is collected by the primary processed product collection section 26 and conveyed toward the side of the grain bin 12 (right-left direction of the machine body). The secondary treated material (generally, the sorting accuracy is low and the ratio of cut straw or the like is high) that is leaked from the sorting process by the second half portion (second chaff screen 39) of the sorting housing 33, that is, the secondary treated material in the sorted treated material is recovered by the secondary treated material recovery section 27. The secondary treated product corresponds to a separated product which is not separated as a separated product among the separated products. The secondary treated material recovered by the secondary treated material recovery section 27 is returned to the front of the sorting section 42 by the secondary treated material returning device 32, and is sorted again by the sorting housing 33.

The first chaff screen 38 is provided with a plurality of plate-like chaff scrapers (chaff lip) arranged in a row along the transport (forward and backward) direction of the threshing processed product. The chaff scrapers are disposed in an inclined posture such that the rear end side thereof is inclined obliquely upward. The inclination angle of the chaff scraper is variable, the steeper the inclination angle, the wider the interval between adjacent chaff scrapers, and the easier the threshing processed matter will leak down. That is, the drain opening can be changed by changing the posture of the plurality of chafer scrapers. Therefore, by adjusting the inclination angle of the chaff scraper, the sorting efficiency (sorting accuracy, sorting speed) of the swing sorting device 24 can be adjusted. A blade control mechanism capable of changing and controlling the inclination of the chaff blade is provided, and the inclination angle of the chaff blade can be automatically changed.

The second chaff screen 39 is also of the same construction as the first chaff screen 38. The rice husk screen further includes an angle control mechanism capable of changing and controlling the inclination of the rice husk scraping plate of the second rice husk screen 39, and the inclination angle of the rice husk scraping plate can be automatically changed.

Fig. 4 is a front view of the grain tank 12, the grain lifting apparatus 29, and the threshing apparatus 1, and fig. 5 is a right side view of the grain lifting apparatus 29 in longitudinal section. As shown in fig. 4 and 5, a grain lifting device 29 is provided for conveying the sorted processed product collected by the primary processed product collection unit 26 to the grain box 12. The thresher 29 is disposed between the thresher 1 and the grain box 12, and is vertically arranged in a vertical posture. The grain lifting device 29 is constituted by a bucket conveyor type conveyor. The sorting processed objects fed by the thresher 29 are delivered to the infeed conveyor 30 at the upper end of the thresher 29. The infeed conveyor 30 is connected to the cereal lifting device 29 in an adjacent state. The infeed conveyor 30 is configured to be screw-conveyed, and is caught in the grain tank 12 from a wall portion on the left side of the front portion of the grain tank 12. The infeed conveyor 30 has a screw portion 30S that rotates about a body transverse axis Y1. A grain discharge device 30A is provided at the end of the infeed conveyor 30 on the tank interior side. The grain discharging device 30A includes a plate-shaped discharging rotating body 30B, and rotates integrally with the spiral portion 30S. The sorting process (grain) is laterally conveyed by the infeed conveyor 30 and ultimately thrown into the grain bin 12 by the grain discharge device 30A. That is, the infeed conveyor 30 receives grains conveyed by the thresher 29, conveys the grains in the lateral direction, and feeds the grains into the grain bin 12. The grain lifting apparatus 29 and the infeed conveyor 30 are "conveyors" of the present invention.

As shown in fig. 4 and 5, in the valley raising device 29, a plurality of buckets 31 are attached to the outer peripheral side of an endless rotary chain 29C wound around a drive sprocket 29A and a driven sprocket 29B at regular intervals. That is, the threshing device 29 has a plurality of buckets 31 for lifting grains obtained by the threshing device 1. The grain lifting apparatus 29 includes a conveying path 29D for lifting the bucket 31 in which the sorted products are stored, and a return path 29E for lowering the bucket 31 after the sorted products are discharged to the infeed conveyor 30. The conveying path 29D and the return path 29E are arranged along the left side wall 12b of the grain box 12 so that the conveying path 29D is on the rear side.

[ construction of disposable-based Material sensor ]

A primary treatment sensor 60 is provided between the grain lifting apparatus 29 and the infeed conveyor 30. The disposable-based sensor 60 is a "flow rate measuring device" according to the present invention. A primary processed object sensor 60 is disposed at the upper end of the grain lifting apparatus 29 to measure the amount of the sorted processed object transferred from the bucket 31 to the infeed conveyor 30. The primary treatment object sensor 60 measures the flow rate Fv1 of the grain transported by the grain lifting device 29 and the infeed conveyor 30 (see fig. 17). The primary treatment object sensor 60 is provided with an arm 63 that swings in contact with the conveyed grain, a first sensor portion 64 (the "sensor portion" of the present invention), and a first flow rate calculation portion 81A (see fig. 17, the "calculation portion" of the present invention). The first sensor portion 64 detects the swing angle θ1 of the arm 63 (see fig. 8, 9, and 17). The first flow rate calculation unit 81A calculates the flow rate Fv1 based on the detected swing angle θ1.

As shown in fig. 5, the bucket 31 moves upward along the conveying path 29D, grains are loaded in the bucket 31, and conveyed from the primary treated-material collecting unit 26 to the upper end portion of the grain lifting device 29. A discharge port 29h is formed at the upper end of the grain lifting apparatus 29. The discharge port 29h is provided on a side opposite to the conveying path 29D in a side portion of the return path 29E of the upper end portion of the grain lifting apparatus 29. When the bucket 31 moves from the conveyance path 29D to the return path 29E at the upper end portion of the grain lifting device 29, the bucket 31 is lowered from the raised posture to the lowered posture and the posture is reversed. At this time, the bucket 31 performs a 180-degree (or approximately 180-degree) swinging motion around the rotation axis of the driven sprocket 29B, and centrifugal force acts on grains loaded on the bucket 31. Then, in the discharge port 29h, the bucket 31 throws grains at the time of the whirling operation. In other words, grains are thrown at the discharge port 29h by the bucket 31 which reverses the posture from the raised posture to the lowered posture at the upper end portion of the grain lifting device 29. The upper end portions of the grain lifting apparatus 29, that is, the upper end portions of the conveying path 29D and the return path 29E are covered with the top plate 61. The infeed conveyor 30 is connected to the discharge port 29h. That is, a space for passing the grain lifting device 29 and the infeed conveyor 30 is formed outside the discharge port 29h and above the infeed conveyor 30. When grains are thrown from the bucket 31, the grains are thrown into the infeed conveyor 30 while drawing a parabola in the space below the top plate 61.

As shown in fig. 5, 6 and 7, the top plate 61 of the grain lifting apparatus 29 is provided with a bulge 65. The bulge 65 bulges upward from the surface portion of the top plate 61, and an internal space 62 is formed inside the bulge 65. The primary treatment object sensor 60 is supported by the bulge 65. The primary treatment sensor 60 measures the flow rate Fv1 of grains thrown from the bucket 31. The primary treatment object sensor 60 is provided with an arm 63, a first sensor 64, and a rotation shaft 66.

The rotary shaft 66 is supported by the bulge 65. The arm 63 is attached to the rotation shaft 66 so as to be rotatable integrally with the rotation shaft 66. The arm 63 extends downward from the rotation shaft 66. The arm 63 is supported swingably around a swing axis Y2 of the rotation shaft 66.

The arm 63 is located on the throwing path (throwing path area S1) of the grain thrown from the bucket 31, and swings by coming into contact with the grain thrown from the bucket 31. The arm 63 is provided in a hanging posture facing the discharge port 29h without being contacted by grains, and is configured to be shorter than the vertical length of the discharge port 29 h. The bulge 65 is formed at a position where a portion of the bulge 65 located directly above the rotation shaft 66 is highest. Further, an inclined surface 65a is formed in the front part of the body of the bulge portion 65, and the inclined surface 65a is closer to the top plate 61 as it is closer to the front side of the body. In addition, in order to facilitate understanding of the arm 63, the inclined surface 65a of fig. 6 shows only a portion on the front lower side.

A flange portion 65b is formed on the left side of the body of the bulge portion 65, and a stay 67 is connected to the flange portion 65b by a bolt Bo. The longitudinal central region of the stay 67 protrudes farther from the bulge 65 than the longitudinal both end portions of the stay 67 in plan view. The first sensor portion 64 is supported at a longitudinal center region of the stay 67. The first sensor portion 64 is located outside the valley device 29 via a flange portion 65b of the bulge portion 65. That is, the first sensor 64 is provided in a state of being separated from the throwing path area S1 at a position deviated from the throwing path area S1 of the grain thrown from the bucket 31.

A through hole is formed in the flange portion 65b of the bulge portion 65, and the rotation shaft 66 penetrates the through hole. A link arm 66A is provided at an end portion of the rotation shaft 66 on the opposite side of the flange portion 65b of the bulge portion 65 from the side on which the arm portion 63 is located, and the link arm 66A extends radially outward of the rotation shaft 66. A through hole is formed in the longitudinal center region of the stay 67, and the rotation shaft portion 64A of the first sensor portion 64 passes through the through hole. A link arm 64B is connected to a distal end portion of the rotation shaft portion 64A of the first sensor portion 64, and the link arm 64B extends radially outward. The link arm 66A and the link arm 64B are pin-coupled. Thus, the arm 63 and the first sensor 64, which rotate integrally with the rotation shaft 66, are linked to the pin 99 via the link arms 66A and 64B. With this configuration, the first sensor 64 is less likely to receive an impact from the arm 63, and the first sensor 64 is less likely to fail, as compared with a configuration in which the first sensor 64 is directly coupled to the rotary shaft 66. The first sensor portion 64 detects the swing angle θ1 of the arm portion 63 (see fig. 17). Further, a first flow rate calculation unit 81A (see fig. 17) is provided for calculating the flow rate Fv1 based on the pivot angle θ1. For example, a map or equation showing the relationship between the swing angle θ1 and the flow rate Fv1 is stored in the first flow rate calculating unit 81A in advance. A map and equation showing the relationship between the swing angle θ1 and the flow rate Fv1 are obtained in advance by experiments and calculations (experiments or calculations). Then, the first flow rate calculation unit 81A calculates the flow rate Fv1 based on the map and the equation.

A long hole is formed in one of the link arm 66A and the link arm 64B, and a round hole is formed in the other of the link arm 66A and the link arm 64B. The long hole extends in the longitudinal direction of the one side. Then, one pin 99 is inserted into the one long hole and the other round hole, so that the link arm 66A and the link arm 64B are pin-coupled. Since a long hole is formed in one of the link arm 66A and the link arm 64B, an error in centering of the link arm 66A and the link arm 64B in pin connection is allowed. With this configuration, it is not necessary to precisely align the rotation shaft portion of the first sensor portion 64 and the rotation shaft 66 on the same axis, and assembly of the first sensor portion 64 in the disposable-type sensor 60 is facilitated.

Insertion holes for inserting the bolts Bo are formed in the left and right end portions of the stay 67, and the insertion holes are formed to have a diameter larger than the nominal diameter of the bolts Bo (for example, about 3mm larger than the nominal diameter) and smaller than the diameter of the heads of the bolts Bo. With this configuration, the first sensor portion 64 can be easily aligned with respect to the rotation shaft portion of the rotation shaft 66. That is, the first sensor portion 64 of the disposable-based sensor 60 is easily assembled.

The stay 67 is provided with a spring support portion 67a. A coil spring 68 is stretched across the free end of the link arm 66A and the spring support 67a. The arm 63 is swingably biased to approach the valley device 29 by the tensile bias of the coil spring 68. The region on the swing base end side of the arm 63 abuts against the locking portion 69, and is held in a downward standby position against the spring bias of the coil spring 68. If the arm 63 is in contact with the locking portion 69 and the biasing force of the coil spring 68 acts on the arm 63, even if vibration due to irregularities in the field, vibration from the engine, or the like is transmitted to the arm 63, the arm 63 is maintained in the downward standby state with little influence of the vibration.

With the above configuration, the arm 63 is configured to be swingable within a range between the position in the downward posture and the front lower end portion of the inclined surface 65 a. The swing angle θ1 of the arm 63 in this case is set to, for example, 40 degrees.

A receiving portion 30d is formed at a conveyance direction start end portion of a cylindrical housing of the infeed conveyor 30 that covers the spiral portion 30S, and the receiving portion 30d receives grains thrown from the bucket 31. The receiving portion 30d extends and protrudes to the side where the winnower 29 is located than the spiral portion 30S of the infeed conveyor 30. The receiving portion 30d is inclined so as to be positioned lower as it is closer to the side where the spiral portion 30S is positioned.

As shown in fig. 5, when viewed from the machine body side, the region where the distal end portion of the receiving portion 30d extends is indicated by a virtual line L1, and the arm portion 63 is disposed on the side of the virtual line L1 where the spiral portion 30S of the infeed conveyor 30 is located. In a side view of the machine body, a portion of the spiral portion 30S where the machine body transverse axis Y1 is located is indicated by a virtual line L2, and the arm 63 is disposed on a side of the virtual line L2 where the grain lifting device 29 is located in a state of extending downward without being collided with grains. That is, the arm 63 is disposed in a region between the virtual line L1 and the virtual line L2 so as not to extend downward by the grain collision. In other words, the arm 63 swings around the swing axis Y2 provided between the discharge port 29h and the body lateral axis Y1 in a direction in which the grain lifting device 29 and the infeed conveyor 30 are adjacent to each other at a position higher than the spiral portion 30S in the delivery space between the grain lifting device 29 and the infeed conveyor 30.

When the grain collides with the arm 63, the grain falls downward by receiving repulsive force from the arm 63. Therefore, the grains of the collision arm 63 are more likely to fall down the return path 29E than the grains of the non-collision arm 63. According to the present embodiment, the arm 63 is disposed on the side of the screw portion 30S of the infeed conveyor 30 with respect to the extending protruding tip portion of the receiving portion 30 d. Therefore, most of the grains that have bounced by collision with the arm 63 are caught by the receiving portion 30d, and guided into the grain box 12 by the infeed conveyor 30. As a result, the grain of the collision arm 63 is less likely to fall down the return path 29E.

The arm 63 is formed such that the width of the arm 63 is half or less of the width of the bucket 31. Since grains are thrown from the bucket 31 substantially uniformly in the width direction of the bucket 31, more than half of the grains thrown from the bucket 31 are caught by the receiving portion 30d without colliding with the arm 63. As a result, the risk of grains being bounced back by the arm 63 and falling down the return path 29E can be reduced. That is, the lateral width of the arm 63 is set narrower than the lateral width of the opening of the bucket 31.

The arm 63 is disposed on the side of the virtual line L2 closer to the grain lifting device 29 so as not to collide with the grain and extend downward. Therefore, the grain strongly collides with the arm 63, compared to a configuration in which the arm 63 is disposed on the opposite side to the virtual line L2 from the side on which the grain lifting device 29 is located. Therefore, even if the amount of grain thrown from the bucket 31 is small, the primary treatment object sensor 60 can accurately measure the flow rate Fv1 of grain.

As shown in fig. 8 and 9, when the grain is thrown from the bucket 31, the grain is in a vertically continuous band shape and falls down to the side of the receiving portion 30d while drawing a parabola. The arm 63 is located on the throwing path (throwing path area S1) of the grains, and the grains located on the upper side among the vertically continuous band-shaped grains are in contact with the arm 63. When grains thrown from the bucket 31 contact the arm 63, the arm 63 swings away from the bucket 31 from which the grains are thrown against the urging force of the coil spring 68 by the pressing force. The grain having collided with the arm 63 falls downward by the repulsive force from the arm 63, is caught by the receiving portion 30d, and is guided to the side where the spiral portion 30S is located. The swing base end portion of the arm 63 is offset upward from the throwing path area S1 of the grain. That is, the arm 63 swings around a swing axis Y2 provided at a position offset from the throwing path area S1 of the grain thrown from the bucket 31.

The virtual line L3 is shown in fig. 5. The virtual line L3 extends downward from the swing axis Y2 and intersects in a direction orthogonal to the upper end line of the throwing path area S1. The free end of the arm 63 is located on the side of the virtual line L2 from the virtual line L3 in a state of extending downward without being collided with the grain. Therefore, the arm 63 swings toward the side where the virtual line L2 is located, and the portion of the arm 63 that extends beyond the range of the throwing path area S1 increases. That is, the arm 63 is configured such that the larger the swing angle θ1 is, the larger the ratio of the arm to extend out of the throwing path area S1 is.

As shown in fig. 8, when grains are thrown from the bucket 31 and come into contact with the arm 63, the arm 63 swings. Then, when most of the grain thrown from the bucket 31 passes through the region where the arm 63 is located, the arm 63 returns to the downward posture side by the urging force of the coil spring 68. In the present embodiment, 20 to 30 scoops 31 pass through the upper end portion of the grain lifting device 29 in 1 second, and grains are thrown from the scoops 31 at 1/20 second to 1/30 second intervals in the discharge port 29 h. Therefore, the arm 63 swings (vibrates) at a period of 1/20 second to 1/30 second.

In the example shown in fig. 9, the amount of grains thrown from the bucket 31 increases as compared with the example shown in fig. 8. When the amount of grains thrown from the bucket 31 increases, the thrown grains become lump-shaped in the discharge port 29h, and the thickness increases. The amount of grains thrown from the bucket 31 increases, and the swing angle θ1 of the arm 63 increases. In addition, if the grains thrown from the bucket 31 become large, the grains become lump in the discharge port 29h and increase in thickness, so that the time required for the lump grains to pass through the throwing path area S1 becomes long. Therefore, the time for returning the arm 63 to the downward posture side is almost short, and the swing angle θ1 remains large.

When the arm 63 comes into contact with the front lower end portion of the inclined surface 65a, the swing of the arm 63 is stopped. In other words, the arm 63 is abutted against the front lower end portion of the inclined surface 65a, so that the swing of the arm 63 is maximally separated by a distance. In this state, substantially the entire arm 63 except the free end is accommodated in the internal space 62. At this time, the grain thrown in a parabolic shape along the inner peripheral side surface portion of the top plate 61 is only in contact with the free end portion of the arm portion 63, and therefore, most of the grain is guided by the receiving portion 30d of the infeed conveyor 30 without being in contact with the arm portion 63.

[ construction of secondary treatment object sensor ]

As described above, the secondary processed product is returned to the upstream side, which is the front portion of the swing sorting device 24, by the secondary processed product returning device 32. Specifically, the secondary treated product discharge port 32A of the secondary treated product returning device 32 is provided at a position radially outside the circular arc-shaped screen 23 (a position laterally of the screen 23 and at which the secondary treated product does not pass through the screen 23), and discharges the secondary treated product at this position. The threshing device 1 is provided with a secondary treatment product sensor 70 for measuring the flow rate Fv2 of the secondary treatment product returned in this manner (secondary treatment product return amount, see fig. 17). Fig. 10 to 13 show an arrangement of the secondary treated material discharge port 32A.

In the present embodiment, as shown in fig. 10, the secondary treated material discharge port 32A is provided toward the screen 23 side. As shown in fig. 11 and 12, a rotating blade 32B that rotates together with the screw constituting the secondary treated material returning device 32 is provided in the vicinity of the secondary treated material discharge port 32A. The secondary treated material conveyed by the secondary treated material returning device 32 is discharged radially outward from the secondary treated material discharge port 32A by the rotary vane 32B through the insertion hole formed in the side wall 50 of the threshing section 41, and is discharged as indicated by the broken-line arrow in fig. 12.

The secondary treated product discharge port 32A is provided with a guide portion 32C for guiding the discharged secondary treated product toward the upstream side in the treated product transfer direction of the vibratory separator 24. The guide portion 32C is formed in a shape of a part of a cylinder having an inner peripheral surface facing the secondary treated product discharge port 32A. In other words, the guide portion 32C is curved in an arc shape. By the inner peripheral surface of such a guide portion 32C, the discharge direction of the secondary processed product discharged by the rotary blade 32B is restricted.

As shown in fig. 11 and 12, the secondary treatment object sensor 70 is supported by the inner side portion of the side wall 50 in the threshing portion 41. The secondary treated matter sensor 70 is configured to contact the secondary treated matter discharged from the rotary blade 32B in the secondary treated matter returning device 32 and measure the flow rate Fv2 of the returned secondary treated matter. The secondary treatment object sensor 70 includes: a swing arm 72, which is located on the discharge extension line of the secondary processed object discharged from the secondary processed object returning device 32, and swings by contact with the discharged secondary processed object; a second sensor unit 73 for measuring a flow rate Fv2 of the secondary treatment object based on a swing angle θ2 (see fig. 17) of the swing arm 72; a support frame 74 that supports the second sensor portion 73 and the swing arm 72; and a cover 75 covering the secondary treatment object sensor 70.

The second sensor unit 73 is mounted in a housing, and is fixed to an inner side portion of the support frame 74 by bolting. The second sensor unit 73 is provided with a rotation shaft 76 protruding outward (toward the side wall 50) through the support frame 74, and the swing arm 72 is integrally rotatably attached to the rotation shaft 76. The swing arm 72 extends downward from the rotation shaft 76 and is disposed in a state of being positioned in a guide path in which the secondary treatment product is guided by the guide portion 32C. The swing arm 72 is supported so as to be capable of swinging about the axis of the rotation shaft 76.

The cover 75 is configured to cover the swing arm 72, the second sensor portion 73, and the upper side of the support frame 74. The cover 75 prevents fine dust in the threshing processed product leaked through the screen 23 from falling on the swing arm 72 and the second sensor unit 73 and obstructing the measurement operation.

As shown in fig. 13, the swing arm 72 has an extension protruding portion that extends upward from the rotation shaft 76, and a coil spring 78 is stretched across the extension protruding portion and the spring support portion 77. The swing arm 72 is biased to swing so as to approach the secondary treated material discharge port 32A by the tensile bias of the coil spring 78. The swing arm 72 is held in a downward standby position against the urging force of the spring by the upper end portion abutting against the locking portion 79.

When the secondary treated material discharged from the rotary blade 32B through the secondary treated material discharge port 32A contacts the swing arm 72, the swing arm 72 swings in a direction away from the secondary treated material discharge port 32A against the urging force of the coil spring 78 with the pressing force. The swing angle θ2 at this time is measured by the second sensor unit 73, and the second flow rate calculation unit 81B (see fig. 17) calculates the flow rate Fv2 of the secondary processed product based on the measurement result of the second sensor unit 73. Specifically, it is preferable that a map or equation showing the relationship between the swing angle θ2 and the flow rate Fv2 of the secondary treatment object is stored in the second flow rate calculation unit 81B, and the flow rate Fv2 of the secondary treatment object is estimated based on the map or equation.

[ formation of the convex Peak of bucket contact ]

Details of the peak 30e shown in fig. 5 will be described with reference to fig. 14, 15, and 16. As described above, in the discharge port 29h, the bucket 31 discharges grains while performing a 180 degree (or approximately 180 degree) swing motion around the rotation axis of the driven sprocket 29B. However, for example, there is a possibility that grains adhere to the inner side of the bucket 31. Grains stuck inside the bucket 31 may not be discharged from the bucket 31 by only the whirling operation of the bucket 31. Therefore, if the grains stick to the inside of the bucket 31, there is a risk that the conveying efficiency of the grain lifting device 29 is lowered, the yield of grains is lost, or the like. In order to reduce such a problem, a rubber boss 30e is bolted to the protruding tip portion of the receiving portion 30 d. The ridge 30e is positioned in contact with the bucket 31. Under the impact of the contact between the ridge 30e and the bucket 31, the grain remaining in the bucket 31 is ejected and guided to the receiving portion 30 d. Then, when the bucket 31 moves downward, the ridge 30e elastically deforms downward, and the bucket 31 swings upward. When the bucket 31 moves further downward in the return path 29E, the ridge 30E separates from the bucket 31. At this time, the elastic energy of the peak 30e is released, and the peak 30e returns to its original shape with a strong potential. When the bucket 31 is separated from the peak 30e, the impact due to the elastic energy of the peak 30e is transmitted to the bucket 31, and grains remaining in the bucket 31 are ejected and fall downward. The grains falling downward are returned to the primary treated material recovery section 26 along the return path 29E. With this configuration, the risk of the grains sticking to the inside of the bucket 31 can be reduced.

[ calculation of workload ]

The calculation of the work amount will be described with reference to fig. 17. The first flow rate calculation unit 81A calculates the flow rate Fv1 of the grain flowing through the cereal lifting device 29 and the infeed conveyor 30 based on the swing angle θ1 of the arm 63 measured by the first sensor unit 64. The correlation between the swing angle θ1 and the flow rate Fv1 of the grain is obtained by, for example, experimental data or a learning algorithm. Data of the correlation between the swing angle θ1 and the flow rate Fv1 of the grain obtained by the experimental data and the learning algorithm is stored in a storage device (not shown) or the like. In the present embodiment, the first flow rate calculation unit 81A can calculate the flow rate Fv1 of the grain at a sampling period of, for example, 1/20 to 1/30 seconds. Therefore, the first flow rate calculating unit 81A can calculate the flow rate Fv1 of the grain flowing through the grain lifting device 29 and the infeed conveyor 30 in real time (or substantially real time).

The second flow rate calculation unit 81B calculates the flow rate Fv2 of the secondary processed object discharged from the secondary processed object discharge port 32A based on the swing angle θ2 of the swing arm 72 measured by the second sensor unit 73. The correlation between the swing angle θ2 and the flow rate Fv2 of the secondary treatment product is obtained by, for example, experimental data or a learning algorithm. Data of the correlation between the swing angle θ2 obtained by the experimental data and the learning algorithm and the flow rate Fv2 of the secondary treatment object is stored in a storage device (not shown) or the like. Like the first flow rate calculating unit 81A, the second flow rate calculating unit 81B can calculate the flow rate Fv2 of the secondary treated material discharged from the secondary treated material discharge port 32A in real time (or substantially real time).

The correction unit 80 corrects the flow Fv1 of the grain calculated by the first flow calculation unit 81A by the flow Fv2 of the secondary treatment product calculated by the second flow calculation unit 81B. Fig. 18 shows an example of the detected amounts related to the flow rate Fv1 of the grain and the flow rate Fv2 of the secondary treated product in the present embodiment. Specifically, the correction unit 80 corrects the flow rate Fv1 of the grain by adding the flow rate Fv2 of the secondary treatment product to the flow rate Fv1 of the grain after the start of the harvesting operation in the work area until the flow rate Fv1 of the grain reaches a predetermined amount. The work target area is an area where the combine harvester performs a crop harvesting operation in the field. As shown in fig. 18, the flow rate Fv1 of the grain gradually increases from the start of the harvesting operation of the crop to the time when the flow rate Fv1 of the grain reaches a predetermined amount (predetermined value), that is, from the start of harvesting to t1 in fig. 18, and the flow rate Fv2 of the secondary treated product rapidly (steeply) increases and then gradually decreases. Therefore, the correction unit 80 adds the flow Fv2 of the secondary treatment object to the flow Fv1 of the grain detected by the primary treatment object sensor 60 from the start of harvesting to t1, thereby correcting the detection result of the primary treatment object sensor 60.

On the other hand, the correction unit 80 calculates the flow rate Fv2 of the secondary processed product by subtracting the flow rate Fv1 of the grain after harvesting and passing through the work area. The harvesting and passing through the work target area means that the harvesting unit 4 of the combine is driven in the field to pass through the area where the harvesting work of the crop is performed. In this state, as shown in fig. 18, after t2 passes from harvesting, the flow rate Fv1 of the grain increases sharply (steeply) and then gradually decreases, and the flow rate Fv2 of the secondary treated product gradually decreases. Therefore, the correction unit 80 corrects the detection result of the primary processed object sensor 60 by subtracting the flow Fv2 of the secondary processed object from the flow Fv1 of the grain detected by the primary processed object sensor 60 after the predetermined time t2 has elapsed since harvesting. The flow rate Fv1 of the grain corrected by the correction unit 80 is sent to the work amount estimation unit 84.

The yield receiving unit 85 receives a specific yield value Vd. Examples of the specific yield value Vd include a yield value corresponding to a known capacity of the grain box 12, a yield value corresponding to a capacity (or a surplus) that can be transported by the transport vehicle, and a yield value corresponding to a capacity that can be dried by a dryer of the drying facility. The specific yield value Vd may be configured to read the capacity of the grain box 12 stored in advance in a storage device (not shown), or may be set on an operation panel of the driver section 9 by an operator. In addition, the specific throughput value Vd may be configured to receive data from outside through the radio communication network. The specific yield value Vd received by the yield receiving unit 85 is sent to the work load estimating unit 84.

The body position calculating unit 88 calculates the position coordinates of the body with time based on the positioning data output from the satellite positioning module 83. That is, the body position calculating unit 88 calculates the body position using satellite positioning. The calculated time-lapse position coordinates of the machine body are sent to the work load estimating unit 84.

The work amount estimating unit 84 calculates the total amount of grains stored in the grain tank 12, that is, the yield Vi in real time by accumulating the flow rate Fv1 of the grains calculated by the first flow rate calculating unit 81A and corrected by the correcting unit 80. Since the flow rate Fv1 of the grain is sequentially sent from the first flow rate calculation unit 81A at intervals of, for example, 1/20 to 1/30 seconds, the work amount estimation unit 84 can calculate the average yield Vt per unit time based on the flow rate Fv1 of the grain.

Further, since the work load estimating unit 84 receives the time-lapse position coordinates of the machine body calculated by the machine body position calculating unit 88, the travel distance and speed can be calculated by calculating the difference between the time-lapse position coordinates of the machine body. Therefore, the work amount estimating unit 84 can calculate the average yield Vr per unit travel distance based on the flow rate Fv1 of the grain.

The work amount estimating unit 84 is configured to estimate various work amounts based on the specific yield value Vd, the flow rate Fv1 of grains, and the position coordinates of the machine body calculated by the machine body position calculating unit 88. In the present embodiment, the various work amounts are work amounts up to the grain box 12 storing grains corresponding to the specific yield value Vd. For example, if the specific yield value Vd is the capacity of the grain tank 12, the work amount estimating unit 84 calculates the work amount until the grain tank 12 is full. Further, for example, if the specific yield value Vd is a transportable capacity (or a margin) of the transport vehicle, the work amount estimating unit 84 calculates a work amount corresponding to the transportable capacity (or the margin) of the transport vehicle.

Specifically, the work amount estimating unit 84 calculates the residual value Vre as the work amount by the following expression.

Vre＝Vd－Vi

The residual value Vre is a value obtained by subtracting the yield Vi from the specific yield value Vd. The work amount estimating unit 84 calculates the work time Tw as the work amount by the following equation.

Tw＝Vre/Vt

The work time Tw is a value obtained by dividing the margin value Vre of the yield Vi by the average yield Vt per unit time, which is subtracted from the specific yield value Vd. In addition, the work load estimating unit 84 calculates the work travel distance Dw as the work load by the following equation.

Dw＝Vre/Vr

The work travel distance Dw is a value obtained by dividing the remaining value Vre of the yield Vi by the average yield Vr per unit travel distance from the specific yield value Vd. In this way, the work amount estimating unit 84 estimates the work amount required for the yield Vi of the grain obtained by the harvesting work to reach the specific yield value Vd based on the flow rate Fv1 of the grain.

The work amount estimated by the work amount estimating unit 84 (for example, yu Liangzhi Vre, work time Tw, work travel distance Dw, etc.) is reported to an operator or the like by a reporting unit 87. In the case where the reporting unit 87 is, for example, a liquid crystal monitor provided in the driving unit 9, the calculation results of the first flow rate calculating unit 81A and the work amount estimating unit 84 are displayed on the liquid crystal monitor. The reporting unit 87 may be an LED lamp, a buzzer, voice guidance, or the like.

When the screw conveyor 14A of the grain discharging device 14 rotates, the grains stored in the grain tank 12 are discharged to the outside. The discharge amount calculating unit 86 calculates the amount of grain discharged from the grain tank 12 based on the rotation speed Rv of the screw conveyor 14A of the grain discharging device 14. In the present embodiment, the rotational speed Rv of the screw conveyor 14A is detected by the rotational speed detecting unit 14B. The discharge amount per unit time of the grain discharged by the grain discharging device 14 is in a proportional relationship (or substantially proportional relationship) with the rotation speed Rv of the screw conveyor 14A. Therefore, the discharge amount of grains is calculated in real time by multiplying the rotation speed Rv of the screw conveyor 14A by time. Before the grains are discharged outside the machine, the work load estimating unit 84 calculates the yield Vi of the grains stored in the grain box 12. Therefore, the discharge amount calculation unit 86 may calculate the remaining amount of the grain remaining in the grain tank 12 in real time by subtracting the accumulated discharge amount from the yield Vi during the discharge of the grain. The calculation result of the discharge amount calculation unit 86 is reported to an operator or the like by a reporting unit 87. When the reporting unit 87 is a liquid crystal monitor, the calculation result of the discharge amount calculating unit 86 is displayed on the liquid crystal monitor.

The grains stored in the grain tank 12 are easily accumulated in a mountain shape, but according to this configuration, the primary treatment object sensor 60 detects the flow rate Fv1 of the grains between the grain lifting device 29 and the infeed conveyor 30. By detecting the flow Fv1 of grains by the primary treatment object sensor 60 between the grain lifting device 29 and the infeed conveyor 30, the work amount can be estimated with high accuracy regardless of the accumulation shape of grains in the grain tank 12.

[ adjustment of the drain opening of the chaff Screen ]

As shown in fig. 17, the flow rate Fv1 of the grain corrected by the correction unit 80 is transmitted to the control unit 82. The control unit 82 controls the threshing device 1 based on the corrected flow Fv1 of the grain and the flow Fv2 of the secondary treated product. Specifically, as shown in fig. 19, if the flow rate Fv1 of the grain exceeds the first threshold value and the flow rate Fv2 of the secondary treated product is equal to or less than the second threshold value, the control unit 82 reduces the drop opening degree of at least one of the first chaff screen 38 and the second chaff screen 39 in the classifying section 42. This can reduce the flow rate Fv1 of grains, increase the flow rate Fv2 of the secondary treated product, increase the amount of the treated product separated in the threshing device 1, and further improve the separation accuracy. Thus, the amount of inclusions mixed into the primary treated material can be reduced.

Further, it is preferable that the control unit 82 increases the chaff sieve drain opening degree if the flow rate Fv1 of the grain is smaller than a third threshold value smaller than the first threshold value set in advance. Thus, when the flow rate Fv1 of the cereal grains is equal to or less than a predetermined amount, the flow rate Fv1 of the cereal grains can be increased.

In addition, depending on the case, it is conceivable that even when the opening degree of the first chaff screen 38 and the second chaff screen 39 is small, the state where the flow rate Fv1 of the grain is larger than the first threshold value is continued, or the state where the flow rate Fv2 of the secondary treated matter is equal to or smaller than the second threshold value is continued, or the ratio of the flow rate Fv2 of the secondary treated matter to the flow rate Fv1 of the grain is not small, but the amount of the crop supplied to the threshing device 1 is excessive. Therefore, even when the opening degree of the first chaff screen 38 and the second chaff screen 39 is large, the traveling device 3 that performs traveling control of the body frame 2 preferably reduces the traveling speed of the body frame 2, particularly when the flow rate Fv2 of the secondary treated matter is larger than the second threshold value. This can reduce the amount of crop supplied to the threshing device 1, and reduce the threshing amount and sorting amount in the threshing device 1. Therefore, for example, when the flow rate Fv2 of the secondary treated material increases due to the clogging of the grain sieve 40, the clogging of the secondary treated material can be eliminated.

The traveling device 3 may be configured to automatically travel the body frame 2. In this case, the traveling speed of the body frame 2 or the parking can be reduced based on the first threshold value and the second threshold value.

Further, it is preferable that the traveling device 3 stops the machine frame 2 when the ratio of the flow rate Fv2 of the secondary treated matter to the flow rate Fv1 of the grain does not decrease or the traveling speed of the machine frame 2 decreases until the ratio of the flow rate Fv2 of the secondary treated matter to the flow rate Fv1 of the grain does not decrease, because the drain opening degree of the first chaff screen 38 and the second chaff screen 39 increases for unexpected reasons. This can temporarily interrupt the supply of crops to the threshing device 1, and thus can reduce the load of the threshing process and the sorting process in the threshing device 1. Thus, the crop in the threshing device 1 can be currently treated, and clogging of the threshing screen 40 with the crop removal treated matter can be eliminated.

In the case where the inclination posture of the dust feed valve 53a can be changed, the inclination angle may be changed based on the flow rate Fv1 of the grain and the flow rate Fv2 of the secondary processed product.

[ other embodiments ]

The present invention is not limited to the configuration described in the above embodiment, but is exemplified by other exemplary embodiments.

(1) In the above embodiment, the explanation has been made taking an example in which the combine is a general combine, but the combine may be a semi-feed combine. The configuration of the disposable-handling unit sensor 60 according to the above embodiment can be applied to a semi-feeding combine harvester. For example, as shown in fig. 20, the primary treatment object sensor 91 may be supported by the ceiling 12t of the grain tank 12. The cereal grain box 12 has a left side wall 12b for supporting a cereal grain lifting device 90 extending vertically, and the cereal grain lifting device 90 is provided with a screw conveyor 90A, and the screw conveyor 90A rotates clockwise in plan view. A discharge port 12h is formed in the left side wall 12b at a position where the upper end portion of the winnowing device 90 is located, and the discharge port 12h communicates with the internal space of the winnowing device 90.

The screw conveyor 90A conveys grains vertically from the bottom of the threshing device 1, and a rotary blade 90B is provided at the upper end of the screw conveyor 90A. The rotary blade 90B rotates integrally with the screw conveyor 90A. The discharge port 12h is provided at a portion where the rotary vane 90B is located.

The primary treatment object sensor 91 is provided with an arm 92 and a sensor 93. If grains are discharged from the discharge port 12h, some of the grains come into contact with the arm 92, and the arm 92 swings. The swing angle θ1 of the arm 92 is measured by the sensor 93, and the flow rate Fv1 of the grain is calculated based on the measurement result.

A bulge 95 is formed in the top plate 12t of the grain tank 12. The bulge 95 bulges upward from the surface portion of the top plate 12t, and a bulge space is formed inside the bulge 95. The rotation shaft 94 of the arm 92 is supported by the bulge 95. The bulge 95 is formed such that a portion of the bulge 95 located directly above the rotation shaft 94 is at a highest position. Further, an inclined surface 95a is formed in the front part of the body of the bulge 95, and the inclined surface 95a is closer to the top plate 12t as it is closer to the front side of the body.

The virtual line L3 is shown in fig. 20. The virtual line L3 extends downward from the swing axis Y2 and intersects in a direction orthogonal to the upper end line of the throwing path area S1. The free end of the arm 92 is located on the opposite side of the virtual line L3 from the side of the discharge port 12h in a state of extending downward without being collided with the grain. Therefore, the arm 92 swings to the opposite side of the discharge port 12h, and the portion of the arm 92 extending beyond the range of the throwing path area S1 increases. That is, the arm 92 is configured such that the larger the swing angle θ1 is, the larger the ratio of the arm to extend out of the throwing path area S1 is.

When the amount of the primary processed object discharged from the discharge port 12h becomes large, the arm 92 swings upward greatly. At this time, the swing base end portion side of the arm 92 is located above the top plate 12t, and is accommodated in the bulge 95. That is, when the amount of the primary processed product discharged from the discharge port 12h increases, the arm 92 swings upward greatly, and the proportion of the grain in the arm 92 that is deviated to the upper side of the throwing path area S1 increases. The larger the arm 92 swings upward, the larger the proportion of the portion of the arm 92 stored in the bulge 95. Therefore, most of the primary treated matter does not contact the arm 92, but spreads along a parabola toward the inside of the grain tank 12.

(2) In the above embodiment, the traveling device 3 that performs traveling control of the body frame 2 when the flow rate Fv2 of the secondary treatment object detected by the secondary treatment object sensor 70 is greater than the second threshold value has been described as a configuration that reduces the traveling speed of the body frame 2, but the present invention is not limited to this embodiment. If the drop opening degree of the first chaff screen 38 is set to be small, the flow rate Fv1 of the grains is reduced, and the reduced flow rate Fv1 of the grains is recovered as the secondary treated matter to the secondary treated matter recovery section 27, whereby the separation accuracy can be further improved. On the other hand, if the amount of the secondary treated material recovered in the secondary treated material recovery section 27 excessively increases, the secondary treated material overflows from the secondary treated material recovery section 27 and is discharged as it is together with the waste straw or the like, resulting in a harvest loss. In order to avoid such a problem, for example, as shown in fig. 21, when the flow rate Fv2 of the secondary treated matter is greater than the fourth threshold value, the control unit 82 may increase the drain opening of the first chaff screen 38. This promotes the leakage of the sorted product from the first chaff screen 38, and increases the flow rate Fv1 of the grains, and the amount of the product recovered in the secondary product recovery section 27 decreases, so that the risk of overflow of the secondary product from the secondary product recovery section 27 can be reduced.

If the second threshold shown in fig. 18 is the same as the fourth threshold shown in fig. 21, the control unit 82 increases the drain opening of the first chaff screen 38 and decreases the traveling speed of the machine body when the flow rate Fv2 of the secondary treated matter is greater than the second threshold and the fourth threshold.

A case will be described in which the fourth threshold value shown in fig. 21 is larger than the second threshold value shown in fig. 18. When flow rate Fv2 of the secondary treated matter is greater than the second threshold value and smaller than the fourth threshold value, control unit 82 decreases the traveling speed of the machine body, but does not increase the drain opening of first chaff screen 38. If flow rate Fv2 of the secondary treated matter is greater than the second threshold value and greater than the fourth threshold value, control unit 82 increases the drop-out opening of first chaff screen 38 and decreases the traveling speed of the machine body. Further, if the flow rate Fv2 of the secondary treated matter is greater than the second threshold value and greater than the fourth threshold value, the control unit 82 may increase the drop-out opening degree of the first chaff screen 38, and return the traveling speed of the machine body to the state before the change.

A case will be described in which the fourth threshold value shown in fig. 21 is smaller than the second threshold value shown in fig. 18. When flow rate Fv2 of the secondary treated matter is greater than the fourth threshold value and smaller than the second threshold value, control unit 82 increases the drain opening of first chaff screen 38, but does not reduce the traveling speed of the machine body. If flow rate Fv2 of the secondary treated matter is greater than the fourth threshold value and greater than the second threshold value, control unit 82 increases the drop-out opening of first chaff screen 38 and decreases the traveling speed of the machine body. Further, if the flow rate Fv2 of the secondary treated matter is greater than the fourth threshold value and greater than the second threshold value, the control unit 82 may decrease the traveling speed of the machine body and return the drop-out opening degree of the first chaff screen 38 to the state before the change.

(3) In the above embodiment, the correction unit 80 corrects the flow rate Fv1 of the grain calculated by the first flow rate calculation unit 81A by using the flow rate Fv2 of the secondary processed product calculated by the second flow rate calculation unit 81B, but the present invention is not limited to this embodiment. For example, the correction unit 80 may not be provided, and the flow rate Fv1 of the cereal grains may not be corrected by the correction unit 80.

(4) The work load may be an adjustment value of the drain opening of the chaff sieve. For example, as shown in fig. 22, the work amount estimating unit 84 may be configured to output an adjustment value of the leak opening degree to the control unit 82 based on the flow rate Fv1 of the grain. The control unit 82 may be configured to adjust the drain opening of the first chaff screen 38 and the second chaff screen 39 based on the adjustment value received from the work amount estimating unit 84.

(5) In the above-described embodiment, the work time Tw, which is the work amount, is a value obtained by subtracting the margin value Vre of the yield Vi from the specific yield value Vd and dividing the margin value Vre by the average yield Vt per unit time, but is not limited to this embodiment. In the above-described embodiment, the work travel distance Dw as the work amount is a value obtained by dividing the remaining value Vre of the yield Vi by the average yield Vr per unit travel distance, which is subtracted from the specific yield value Vd, but is not limited to this embodiment. For example, the work amount may be a value obtained by dividing the flow rate Fv1 (instantaneous value) by the margin Vre of the yield Vi subtracted from the specific yield value Vd.

(6) In the above embodiment, the work amount is the work amount up to the grain corresponding to the specific yield value Vd stored in the grain box 12, but the present invention is not limited to this embodiment. For example, the work amount may be a work amount until grains corresponding to a specific yield value Vd are stored in a truck for transporting grains. The work amount may be a work amount up to a grain corresponding to the specific yield value Vd stored in a dryer of the drying facility.

(7) In the above-described embodiment, the primary processed object sensor 60 is configured to detect the swing angle θ1 of the arm 63 by the first sensor portion 64, but the present invention is not limited to this embodiment. For example, the disposable-set sensor 60 may be configured to be provided with a plate portion and a load cell. The grain may collide with the plate portion, and the load cell may detect a load from the plate portion.

(8) In the above-described embodiment, the first flow rate calculating unit 81A, the second flow rate calculating unit 81B, the work amount estimating unit 84, the yield receiving unit 85, the discharge amount calculating unit 86, and the like are provided in the combine harvester, but the present invention is not limited to this embodiment. For example, the first flow rate calculating unit 81A, the second flow rate calculating unit 81B, the work amount estimating unit 84, the yield receiving unit 85, the discharge amount calculating unit 86, and the like may be provided in a computer (one or a plurality of computers may be fixed or portable) that is not mounted on the combine harvester. In this case, the computer and the harvester may be provided with respective estimation functions, respectively, and may constitute an estimation system in which the respective estimation functions can perform data communication (for example, wired/wireless internet communication) with each other.

The configurations disclosed in the above-described embodiments (including other embodiments, the same applies to the configurations disclosed in other embodiments as long as no contradiction occurs. The embodiments disclosed in the present specification are illustrative, and the embodiments of the present invention are not limited to these, and can be appropriately changed without departing from the object of the present invention.

Industrial applicability

The combine harvester can be used for harvesting the planted cereal straws in the field and carrying out threshing and sorting treatment on the harvested cereal straws through the threshing device. In addition, the technical features of the combine harvester of the present invention can also be applied to an estimation system. Therefore, the above-described embodiment can be configured as an estimation system. In addition, the technical features of the combine harvester of the present invention can also be applied to the estimation method. Therefore, the above embodiment can be configured as an estimation method. In addition, the technical features of the combine harvester of the present invention can also be applied to the estimation process. Therefore, the above embodiment can be configured as an estimation program. A recording medium such as an optical disc, a magnetic disc, and a semiconductor memory, in which an estimation program having the technical features is recorded, is also included in the configuration of the above-described embodiment.

Description of the reference numerals

1: threshing device

12: cereal grain box

29: yanggu device (conveying device)

30: transverse feeding conveyor (conveyor)

60: disposable sensor (flow measuring device)

63: arm portion

64: first sensor part (sensor part)

81A: first flow rate calculation unit (calculation unit)

84: work amount estimating unit

85: yield receiving unit

Fv 1: flow rate of grains

Vi: grain yield

Vd: specific yield value

Vr: average yield per unit distance travelled

Vt: average yield per unit time

Dw: working distance (working amount)

Tw: working time (working quantity)

θ1: swing angle of arm

Claims (10)

1. A combine harvester is characterized by comprising:

a threshing device for threshing crops;

a grain box storing grains obtained by the threshing device;

a conveying device that conveys grains obtained by the threshing device from the threshing device to the grain box;

a flow rate measuring device that measures a flow rate of grain conveyed by the conveying device;

a yield receiving unit that receives a specific yield value; and

and a work amount estimating unit that estimates, based on the flow rate, a work amount required for the yield of grains obtained by the harvesting work to reach the specific yield value.

2. A combine harvester according to claim 1, characterized in that,

the work amount estimating unit estimates the yield by accumulating the flow rate.

3. A combine harvester according to claim 1 or 2, characterized in that,

the work amount estimating unit calculates an average yield per unit time based on the flow rate, and estimates a work time as the work amount by dividing a value obtained by subtracting the yield from the specific yield value by the average yield.

4. A combine harvester according to claim 1 or 2, characterized in that,

the work load estimating unit calculates an average yield per unit travel distance based on the flow rate, and estimates a work travel distance as the work load by dividing a value obtained by subtracting the yield from the specific yield value by the average yield.

5. A combine harvester according to any one of claims 1 to 4, characterized in that,

the work amount is a work amount until grains corresponding to the specific yield value are stored in the grain box.

6. A combine harvester according to any one of claims 1 to 5, characterized in that,

the flow rate measurement device is provided with: an arm which swings in contact with the conveyed grain; a sensor unit for detecting the swing angle of the arm unit; and a calculation unit that calculates the flow rate based on the swing angle detected by the sensor unit.

7. An estimation system for estimating the work load of a combine harvester, comprising:

a flow rate measuring device for measuring the flow rate of the grain transported from the threshing device to the grain tank via the transporting device;

a yield receiving unit that receives a specific yield value; and

and a work amount estimating unit that estimates the work amount required for the yield of grains obtained by the harvesting work to reach the specific yield value, based on the flow rate.

8. An estimation method for estimating the workload of a combine harvester, comprising:

a flow rate measurement step of measuring a flow rate of grain transported from the threshing device to the grain tank via the transport device;

a yield reception step of receiving a specific yield value; and

and a work amount estimating step of estimating the work amount required for the yield of grain obtained by harvesting work to reach the specific yield value based on the flow rate.

9. An estimation program for estimating a work load of a combine harvester, the estimation program causing a computer to execute:

a flow rate measurement function for measuring a flow rate of grain transported from the threshing device to the grain tank via the transport device;

A yield reception function for receiving a specific yield value; and

and a work amount estimating function of estimating the work amount required for the yield of grain obtained by harvesting work to reach the specific yield value based on the flow rate.

10. A recording medium having recorded thereon an estimation program for estimating a work amount of a combine harvester, the estimation program causing a computer to execute:

a flow rate measurement function for measuring a flow rate of grain transported from the threshing device to the grain tank via the transport device;

a yield reception function for receiving a specific yield value; and

and a work amount estimating function of estimating the work amount required for the yield of grain obtained by harvesting work to reach the specific yield value based on the flow rate.

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