JP7500804B2 - combine - Google Patents

Description

The present invention relates to a combine harvester that can measure the quality of grain stored in a grain tank.

A combine harvester as described in Patent Document 1 is known in the art and is equipped with a harvesting section that harvests stalks in a field, a threshing device into which the stalks harvested by the harvesting section are fed and threshing is performed, a grain tank that stores the grains threshed by the threshing device, a grain lifting device (grain transport device) that transports the grains threshed by the threshing device upward toward the top of the grain tank, and a grain measuring device that measures the quality of the grains fed into the grain tank.

According to the above literature, by installing grain measuring devices such as a sensor that measures the moisture content of the grains and an optical taste sensor inside the grain tank, the quality of the grains can be measured with higher accuracy. However , there are problems in that a large installation space is required and the installation and maintenance of each grain measuring device is time-consuming.

JP 2016-67217 A

An object of the present invention is to provide a combine harvester that has a simple and compact grain measuring device for measuring grain quality and that allows smooth assembly and maintenance of the grain measuring device.

In order to solve the above problems, the present invention provides a grain measuring apparatus having a reaping section which reaps stalks in a field, a threshing device into which the stalks harvested by the reaping section are fed and threshing is performed, a grain tank which stores grains threshed by the threshing device, a grain conveying device which conveys the grains threshed by the threshing device upward and feeds the grains into the grain tank from an upper portion thereof, an opening for recovering the grains, a grain measuring device which measures the quality of the grains, a supply path for supplying the grains fed into the opening to the grain measuring device, and a discharge section which discharges the grains to the threshing device side after the quality has been measured. a storage section is formed in the supply path, the grain measuring device is a storage type measuring device that measures the quality of the grains stored in the storage section, the grain transporting device has a conveyor device that transports the grains upward and a grain transporting spiral that transports the grains transported by the conveyor device toward a grain tank, the conveyor device is configured to transport the grains upward and input them into the grain transporting spiral side, and a portion of the grains input into the grain transporting spiral side is input into the supply path through the opening and stored in the storage section.

A grain measuring device for measuring grain quality is constructed simply and compactly , and assembly and maintenance of the grain measuring device can be performed smoothly .

1 is a side view and a plan view of a general-purpose combine to which the present invention is applied; 1 is a side view and a plan view of a general-purpose combine to which the present invention is applied; This is a side cross-sectional view of the main parts of the threshing device. FIG. 2 is a plan view of the main parts of the threshing device. FIG. 2 is a front view of the main part of the threshing device. FIG. 2 is a side view of a main part of the grain conveying device. FIG. 2 is a cross-sectional side view of a main portion showing the configuration of a grain measuring unit. FIG. 2 is a block diagram of a control unit. FIG. 13 is a flow diagram showing grain quality measurement control.

Figures 1 and 2 are side and plan views of a general-purpose combine to which the present invention is applied, and Figures 3 to 5 are side cross-sectional views, plan views, and front views of the threshing device. As shown in the figures, this general-purpose combine has a running body 2 supported by a pair of left and right crawler-type running devices 1, 1 that serve as the running part, and a reaping unit 3 that is connected to the front of the running body 2 so that it can be raised and lowered and that performs the work of reaping stalks in a field.

The traveling machine body 2 is provided with a steering unit 4 that an operator rides on and steers in a position directly behind and to the right of the reaping unit 3, a threshing device 6 that performs threshing operations on the stalks reaped by the reaping unit 3 is installed diagonally to the left rear of the steering unit 4, a grain tank 7 that stores the grains threshed by the threshing device 6 is located behind the steering unit 4 and to the right of the threshing device 6, and a discharge unit 8 that discharges straw chips and the like after threshing is provided behind the threshing device 6.

The harvesting section 3 comprises a feeder 9 that transports harvested stalks to the threshing device, a harvesting frame 11 that is connected to the front end of the feeder 9 and extends forward, a pair of left and right dividers 12 provided at the front end of the harvesting frame 11, a pair of left and right support arms 13, 13 that extend forward from the upper rear end side that forms the base of the harvesting frame 11, and a raking reel 14 that is supported and rotatable between the extended ends of the left and right support arms 13.

A reel cylinder 16 is installed between the support arm 13 on one of the left and right sides (the left side in the illustrated example) and the cutting frame 11, which extends and retracts to raise and lower the raking reel 14 relative to the main body of the cutting unit, and a transmission case 17 is provided on the support arm 13 on the other left or right side (the right side in the illustrated example) to transmit power to the raking reel 14. In other words, the raking reel 14 is raised and lowered relative to the main body of the cutting unit 3, and is driven to rotate around its own axis by the power transmitted from the transmission case 17.

According to this configuration, the reaping unit 3 divides the culms in the field into a reaping side between a pair of left and right dividers and a non-reaping side on both the left and right sides of the reaping side by the divider 12, and while the planted culms on the reaping side are reaped by the raking reel 14 toward the reaping unit 3, the root side of the culms is reaped by a reciprocating blade (not shown) provided behind the divider 12. The culms reaped by the reaping unit 3 are sent to the front end side of the feeder 9 by the conveying auger 18 on the reaping frame 11 side, and the culms conveyed to the feeder 9 are conveyed backward by the conveying conveyor 19 provided inside the feeder 9. The reaped culms conveyed to the rear end side of the feeder 9 are fed into the upper front end side of the threshing device 6.

The threshing device 6 is equipped with a threshing section 21 that threshes the harvested stalks transported from the feeder 9 on the upper side of the threshing device 6, and a sorting section 22 that sorts the processed material threshed by the threshing section 21 into grains and waste materials such as straw chips on the lower side of the threshing device 6. The waste materials after sorting can be discharged outside the machine from the discharge section 8 at the rear end of the threshing device 6.

The threshing section 21 includes a threshing chamber 23 into which all the harvested stalks are fed from the rear end of the feeder 9, a cylindrical threshing drum 24 that rotates around a threshing drum rotation axis that runs across the entire threshing chamber 23 in the front-to-rear direction, and a receiving net 26 that is positioned below the threshing drum 24 and is formed into an arc with a concave center when viewed from behind, following the shape of the threshing drum.

With this configuration, the harvested stalks, which are fed into the threshing chamber by the feeder 9, are threshed (threshed) by the rotating threshing drum 24 to produce straw, which is discharged outside the machine from the discharge section 8 at the rear of the threshing chamber 23. On the other hand, the processed material threshed by the threshing drum 24 contains grains such as rice and straw chips, and is received by the receiving net 26 and drips downward to be introduced into the sorting section 22.

The sorting section 22 is equipped with an oscillating sorting body 27 consisting of a chaff sieve and straw rack etc. that oscillates and sorts the processed material that has leaked from the receiving net 26, a winnowing fan 28 that is arranged at the front lower side of the oscillating sorting body 27 and blows sorting air toward the rear upper side, a second sorting fan 29 that discharges the waste dust after sorting outside the machine, a first screw 31 that collects the first grains that have been sorted by the winnowing fan 28 etc., and a second screw 32 that collects the second grains.

As a result, the processed material (de-grained material) that has fallen from the receiving net 26 onto the oscillating sorting body 27 is sorted by the oscillating sorting body 27 and then drops further downward. The processed material that has dropped from the oscillating sorting body 27 has the grains winnowed by the sorting wind of the winnowing fan 28, and can be winnowed into second-grade material and waste material by the sorting wind of the second sorting fan 29.

The first screw 31 extends left and right behind the winnowing fan 28 and transports the selected first grains to the left and right sides of the threshing device 6 (the right side in the illustrated example), and the second screw 32 extends left and right behind the second sorting fan 29 and transports the selected second grains to the right side of the threshing device 6.

Also, on the right side of the threshing device 6, there is a vertical grain conveying device (grain lifting device) 33 that conveys the first grain transported by the first helix 31 upward toward the grain tank 7, and a vertical return conveying device 34 that conveys the second grain transported by the second helix 32 downward to the threshing section 21 or sorting section 22 (see Figure 3, etc.).

The grains transported upward by the grain transport device 33 are fed into the grain tank 7 from the upper side thereof, so that the threshed and sorted grains can be stored in the grain tank 7. At this time, a grain measuring unit (grain measuring means) 40, which is a quality measuring device that collects a portion of the grains and measures the quality of the harvested grains, is provided on the grain transport device 33 side or the grain tank 7 side. The grain measuring unit 40 will be described in detail later.

The grain tank 7 is supported so as to be horizontally rotatable around a vertical pivot shaft (not shown) at its rear end, allowing the grain tank 7 to be opened and closed on the side of the traveling body 2 (see FIG. 2). With this configuration, horizontal rotation (opening) of the grain tank 7 allows for smoother maintenance work on the inside of the grain tank 7 (the threshing device 6 side).

As a result, the grains stored in the grain tank 7 can be discharged outside the machine via a discharge auger 36 provided at the rear end of the traveling body 2 (see Figures 1 and 2).

The discharge section 8 is configured to discharge from the rear end of the threshing device 6 relatively large waste straw etc. that falls from the rear end of the receiving net 26 of the threshing section 21 and is cut by the cutter device, and fine straw chips etc. that are discharged from the rear end of the sorting section 22.

Next, the grain conveying device and the grain measuring unit will be described with reference to Figures 4 to 7. Figures 4 and 5 are a plan sectional view and a front sectional view of the main parts of the threshing device, and Figure 6 is a side view of the main parts showing the grain conveying device.

The grain conveying device 33 includes a vertical main body case 36 extending upward from the conveying end of the first spiral 31, a conveyor device 37 that is housed in the main body case 36 and conveys the grains conveyed by the first spiral 31 upward toward the grain tank 7, and a horizontal grain conveying spiral 38 that conveys the grains conveyed upward by the conveyor device 37 toward the top of the grain tank 7. At the upper front end of the main body case 36, the grain measuring unit 40 is provided to collect a portion of the grains conveyed upward by the conveyor device 37 and measure the quality of the grains (see FIG. 3, etc.).

The conveyor device 37 has a drive sprocket 41 installed at the conveying end side of the first spiral 31, a driven sprocket 42 journaled on the upper side of the main body case 36, a vertical conveying chain 43 looped around the drive sprocket 41 and the driven sprocket 42, and cup-shaped grain objects 44 supported and arranged at a predetermined interval on the conveying chain 43.

The conveying chain 43 is configured to be looped around the driving sprocket 41 and driven sprocket 42 in a clockwise direction when viewed from the right side. As a result, the grain-lifting body 44 attached to the conveying chain 43 is configured to be driven downward at the front side of the conveying chain 43 and driven upward at the rear side of the conveying chain 43. At this time, the cup-shaped grain-lifting body 44 is attached to the conveying chain 43 with its opening side facing the direction of travel of the conveying chain 43 (see Figure 6).

As a result, the lifting body 44 is configured to scoop up the grains transported to the transport end of the first spiral 31 as the orientation of the opening of the lifting body 44 is switched from downward to rear to upward at the lower end of the conveyor device 37 (conveyor chain 43), and to throw the grains in the lifting body 44 forward as the opening of the lifting body 44 is switched from upward to front to downward at the upper end of the conveyor device 37 (see Figure 6).

In other words, the conveyor device 37 can transport the sorted grains transported by the first helix 31 upwards and can also transport the grains by throwing them towards the grain transport helix 38 and grain measuring unit 40 located at the front side at the upper end of the conveyor device 37.

The main body case 36 is formed in a box shape that extends vertically to accommodate the conveyor device 37, and by extending its upper end forward, it is configured to accommodate the grain conveying screw 38 in the left-right direction that transports the grains thrown forward by the grain lifting body 44 to the grain tank 7, and the grain measuring unit 40 (see Figure 6).

The grain transport screw 38 is installed on the upper front side of the main case 36, and is configured to transport grains fed from the upper end side of the conveyor device 37 toward the upper front side of the main case 36 outward to the left and right toward the grain tank 7 (see FIG. 4). In addition, a transport gutter 41 is provided below the grain transport screw 38 to transport the grains smoothly along the grain transport screw 38 (see FIG. 6).

According to the above-mentioned configuration, the grain transport device 33 transports the grains that have been threshed and sorted by the threshing device 6 and transported by the first spiral upwards by the conveyor device 37, and feeds them from the upper end side of the conveyor device 37 into the grain transport spiral 38, and transports them to the upper side of the grain tank 7 by the grain transport spiral 38, thereby storing the grains in the grain tank 7.

The grain measuring unit 40 is disposed at the front end of the upper part of the main body case 36 (the front side of the grain transport screw) and in front of the conveyor device 37 (grain lifting body 44). The grain measuring unit 40 has an opening 46 at its upper end through which grains are inserted, and a discharge section 47 at its lower end through which grains are discharged after measurement (see FIG. 5, etc.). The detailed configuration of the grain measuring unit 40 will be described later.

Between the upper end of the grain measuring unit 40 and the upper end of the main body case 36, an inlet 45 is formed to guide the grains thrown in by the conveyor device 37 to the opening 46. Furthermore, on the rear side of the grain measuring unit 40, a guide surface 40a is formed to guide (guide) grains that have been thrown forward by the grain lifting body 44 but have not reached the inlet 45 to the grain conveying screw 38 (see FIG. 6).

That is, most of the grains fed forward at the upper end of the conveyor device 37 are guided directly or via the side wall 40a to the conveying gutter 41, but some of the grains fed forward at the upper end of the conveyor device 37 are guided via the feed opening 45 to the opening 46 of the grain measuring unit 40.

Next, the grain measuring unit will be described with reference to Figure 7. Figure 7 is a cross-sectional side view of the main part showing the configuration of the grain measuring unit.

The grain measuring unit 40 includes a single-grain measuring device 51 that measures the quality of each grain, a storage measuring device 52 that measures the quality of a predetermined amount of stored grains, the opening 46 into which grains transported upward by the threshing transport device are fed, a supply path 48 that supplies the grains fed into the opening 46 to each grain measuring device 51, 52, the discharge unit 47 that discharges the grains after their quality has been measured by each grain measuring device 51, 52, and a control unit (control device) 50. The control unit 50 is configured to measure the quality of the grains fed into the grain measuring unit 40 by grain quality measurement control, which will be described in detail later (see FIG. 7).

The storage type measuring device 52 has a shutter device 53 that temporarily blocks the supply path 48 to temporarily store the grains, and is provided with a photographing device 54 (or optical sensor, etc.) consisting of a camera or the like that photographs the grains, and a sampling grain detection sensor 56 that detects the amount of grains stored on the supply path 48 by the shutter device, as sensors for measuring the quality of the grains stored on the supply path 48 by the shutter device.

The shutter device 53 includes a shutter member 58 that opens and closes the supply path 48 by opening and closing the supply path 48 around a swing shaft 57 supported on the end side of the supply path 48, a drive motor (shutter drive means) 59 that opens and closes the shutter member 58, and a potentiometer (shutter position detection means) 61 that detects the open/closed position of the shutter member 58.

The shutter device 53 also includes a restricting pin 62 that restricts the opening and closing of the shutter member 58 at a predetermined position on the supply path 48. Specifically, the restricting pin 62 includes an upward rotation restricting pin 62A that restricts further upward rotation of the shutter member 58 when the drive motor 59 rotates the shutter member 58 upward to a closed state in which the supply path 48 is closed, and a downward rotation restricting pin 62B that restricts further downward rotation of the shutter member 58 when the drive motor 59 rotates the shutter member 58 downward to the side that opens the supply path 48.

According to this configuration, the retention-type measuring device 52 first switches the shutter member 58 of the shutter device 53 to a closed state to close (the lower part of) the supply path 48, temporarily blocking the grains falling from the opening 45 along the supply path 48 and retaining the grains on the supply path 48. In other words, a part of the supply path 48 can be made to function as a retention section that temporarily retains grains for grain quality measurement.

As a result, the control unit 50 is configured to measure the quality of the grains stored on the supply path 48 (in the storage section) using the imaging device 54, etc., when the sampling grain detection sensor 56 detects that the amount of grains stored on the supply path 48 has exceeded a predetermined amount.

When the control unit 50 detects that the quality measurement of the grains stored on the supply path 48 has been completed, the control unit 50 is configured to switch the shutter member 58 to an open state via the drive motor 59, thereby discharging the grains stored on the supply path 48 (in the storage section) from the discharge section 47.

In the illustrated example, the single grain measuring device 51 is a moisture meter that measures the moisture content of sampled grains, and the moisture meter 51 has a sampling device (grain intake section) 63 that is disposed above (upstream of) the shutter member 58 on the supply path 48 and supplies grains falling on the supply path 48 to the moisture meter 51.

The sampling device 63 is a spiral (screw-shaped) member that protrudes substantially horizontally from the moisture meter 51 toward the supply path 48, and is configured to be able to supply grains placed on the spiral member to the moisture meter 51 side grain by grain by rotating around its axis. At this time, the sampling device 63 arranged on the supply path 48 is configured to be arranged upstream of the shutter member 58 (specifically, the storage section where the grains are stored by the shutter member in the closed state).

The moisture meter 51 includes a supply section 64 to which grains collected from the supply path 48 by the sampling device 63 are supplied, a moisture sensor (not shown) that crushes the sampled grains and measures their moisture content, and a discharge section 66 that discharges the measured grains onto the supply path 48. At this time, the discharge section 66 is configured to be positioned downstream of the supply path 48 from the shutter member 58 (see FIG. 7).

The single grain measuring device 51 configured as described above is configured to drive the sampling device 63 when the control unit 50 detects that the shutter member 58 has been switched from an open state to a closed state, to start supplying grains to the moisture meter 51 and measuring (inspecting) the quality of the grains using the moisture meter 51. This allows the grains whose quality is measured by the single grain measuring device and the storage type measuring device to be grains that have been threshed at approximately the same time.

The discharge outlet 47 is provided at the lower end of the grain measuring unit 40 and is a discharge path that joins the grains that fall when the shutter member 58 is switched to the open state and the grains discharged from the discharge section 66 of the moisture meter 51, and is configured so that the measured grains can be discharged from the lower end of the grain measuring unit.

The grains discharged from the discharge port 47 of the grain measuring unit 40 are discharged to the handling chamber 23 side, not to the grain tank 7 side, and are sorted again by the sorting section 23 of the threshing device 6 (see FIG. 5). With this configuration, even if the moisture meter 51 crushes and measures the grains to be measured, crushed or mashed grains can be prevented from being stored in the grain tank 7.

In the illustrated example, the grain measuring unit 40 is arranged such that the single grain measuring device 51 and the storage measuring device 52 are positioned on either side of the supply path 48, which is formed in the vertical direction to connect the opening 46 and the discharge outlet 47. With this configuration, multiple measuring devices (two in the illustrated example) are arranged around the supply path so as not to overlap in a plan view, making it possible to make the entire grain measuring unit 40 more compact.

Furthermore, the grain measuring unit 40 has a common opening 46 for supplying grains to each grain measuring device 51, 52 that measures the quality of the grains, the supply path 48, and the discharge section 47, which reduces the number of parts and thus keeps manufacturing costs lower.

The grain measuring unit 40 may be configured so that the opening 46 and the discharge section 47 are shared, but a separate supply path is configured to supply the grains fed into the opening 46 to each grain measuring device (single grain measuring device 51 and storage type measuring device 52), and the grains measured and subsequently discharged by each grain measuring device 51, 52 are reunited at the discharge section 47.

Incidentally, in the illustrated example, the grain measuring unit 40 is configured so that multiple (two in the illustrated example) grain measuring devices 51, 52 are unitized so that they can be attached and detached as a unit within the main body case 36 (grain conveying device 33), but the single grain measuring device 51 and the storage type measuring device 52 may also be configured to be separately attached within the main body case 36 (grain conveying device 33).
It may be.

In addition, in the illustrated example, the grain measuring unit 40 is removably installed within the grain conveying device 33, but the grain measuring unit 40 may also be configured to be attached within the grain tank 7.

Next, the grain quality measurement control by the control unit will be described with reference to Figures 8 and 9. Figure 8 is a block diagram of the control unit. The output side of the control unit (control device) 50 is connected to the drive motor (shutter drive means) 59, an external server 67 connected via a communication unit (described later), and a liquid crystal monitor 68.

The input side of the control unit 50 is connected to a travel detection means 71 that detects the vehicle speed (traveling state) of the traveling machine body using a vehicle speed sensor or a potentiometer that detects the swing position of the main shift lever (not shown), a reaping/threshing drive detection means 72 that detects the driving status of the reaping unit 3 and the threshing device 6 using a power clutch switch or a clutch on/off detection sensor of the threshing device, a culm detection means 73 that detects whether or not reaping (harvesting) work is in progress by detecting the presence or absence of reaping culms transported backward by the reaping unit 3, the shutter position detection means 61, the sampling grain detection means 56, the moisture meter (moisture sensor) 51, the photographing means (camera) 54, and a machine position detection means 74 consisting of a GNSS unit (GPS unit) that acquires the position information of the traveling machine body from a positioning satellite.

The control unit 50 also has a data storage unit 76 that stores information acquired by each grain measuring device (various sensors), etc., and a communication unit 77 for transmitting information such as grain quality measurement results stored in the data storage unit 76 to the external server 67.

This allows the control unit 50 to store image data of the harvested grains acquired by the grain measurement unit 40, grain moisture content, location information of the location where the grains were acquired, and other related information in the data storage unit 76, and transmit the information to the external server 67 via the communication unit 77. The external server 67 can analyze the stored image data and other information in more detail and quantify or graph the grain quality.

The control unit 50 is also configured to output the quality measurement results of the harvested grains obtained by the grain measurement unit 40 to the LCD monitor 68 connected by wireless or wired communication. The LCD monitor 68 may be configured to output the analysis results by the external server 67.

Next, the grain quality measurement control will be described with reference to FIG. 9. FIG. 9 is a flow diagram showing the grain quality measurement control. When the processing flow of the grain quality judgment control is started, the process proceeds to step S1. In step S1, the traveling detection means 71, the reaping/threshing drive detection means 72, and the culm detection means 73 are used to detect whether the combine is reaping/threshing culms (harvesting), and if it is confirmed that the combine is in harvesting, the process proceeds to step S2.

In step S2, the shutter position detection means 61 detects whether the shutter member 58 is in a closed state, and if the shutter member is confirmed to be in a closed state, the process proceeds to step S5.

If the closed state of the shutter member 58 is not detected in step S2, the process proceeds to step S3. In step S3, the shutter member 58 is driven to close by the drive motor 59, and then the process proceeds to step S4. At this time, the drive to close the shutter member 58 continues until the shutter member 58 is detected to be in the closed state by the shutter position detection means 61.

In step S4, the moisture meter 51 starts measuring the moisture content of the grains, and then the process proceeds to step S5.

In step S5, the sampling grain amount detection means 56 is used to detect whether the amount of grains stored on the supply path 48 (storage section) by closing the shutter member 58 and blocking the supply path 48 has reached a predetermined amount or more, and if it is confirmed that the predetermined amount or more of grains have been stored on the supply path 48, the process proceeds to step S6.

If, in step S5, a predetermined amount of grains or more is not detected on the supply path 48, the process returns.

In step S6, since a sufficient amount of grains is secured within the supply path 48, the camera (photographing means) 54 acquires image data of the grains stored within the supply path (storage section), and then the process proceeds to step S7.

In step S7, the moisture meter 51 finishes measuring the moisture content of the grains, calculates the average value of the results of measuring multiple grains, and then proceeds to step S8.

In step S8, the measurement results from the moisture meter (single grain measuring device) 51 and the imaging means 54 (reservoir measuring device 52), as well as related data such as the position information data of the traveling body 2 acquired by the GPS device 74, etc., are stored in the data storage unit 76 of the control unit 50, and then the process proceeds to step S9.

In step S9, the above-mentioned related data stored in the data storage unit 76 is transmitted to the external server 67 via the communication unit 77, and then the process proceeds to step S10. This allows the external server 77 to analyze the quality of the grains based on the grain quality data measured by the grain measuring unit 40 transmitted via the communication unit 77 and the related data.

In step S10, the drive motor 59 switches the shutter member 58 from a closed state to an open state, and then returns. As a result, when the grain quality measurement by the grain measurement unit 40 is completed, the grains stored on the supply path 48 are discharged from the discharge section 47 into the threshing device 6.

As described above, when the various sensors 71, 72, and 73 detect that harvesting is being performed using a combine, the control unit 50 automatically starts sampling of grains and measuring the grain quality using the grain measuring unit 40, and is configured to automatically end grain quality measurement when the storage-type measuring device 52 finishes photographing the grains.

If it is not detected in step S1 that the combine is engaged in harvesting, the process proceeds to step S11.

In step S11, the shutter position detection means 61 detects whether the shutter member 58 is in an open state, and if the open state of the shutter member 58 (open state of the supply path) is detected, the process proceeds to step S13.

In addition, if it is not detected in step S11 that the shutter member 58 is in the open state (the shutter member 58 is in the closed state or the swing position is stopped halfway), the process proceeds to step S12. In step S12, the drive motor 59 drives the shutter member 58 to the open state, and then the process proceeds to step S13.

In step S13, the moisture measurement of the grains using the moisture meter (single grain measuring device) 51 is terminated, and then the process returns.

That is, the single grain measuring device 51 is configured to automatically start grain quality measurement (moisture measurement) when the shutter member 58 of the storage type measuring device 52 is switched to a closed state, and to automatically end grain quality measurement when the shutter member 58 is switched to an open state. The control unit 50 also stores the measurement values of each grain measured while the shutter member 58 is switched to a closed state and the average value in the data storage unit 76.

3 Harvesting section 6 Thresher 7 Grain tank 33 Grain conveying device
37 Conveyor device
38 Grain conveyor screw
40 Grain measuring unit 46 Opening 47 Discharge section 48 Supply path 52 Retention type measuring device (grain measuring device)

Claims (1)

A reaping unit that performs reaping work on the stalks in the field;
a threshing device into which the culms harvested by the harvesting section are input and threshing is performed;
A grain tank for storing grains threshed by the threshing device;
A grain conveying device that conveys the grains threshed by the threshing device upward and inserts the grains into the grain tank from an upper portion of the grain tank;
a grain measuring unit having an opening for collecting the grains, a grain measuring device for measuring the quality of the grains, a supply path for supplying the grains fed into the opening to the grain measuring device, and a discharge section for discharging the grains after the quality has been measured to the threshing device side;
A reservoir is formed in the supply path,
The grain measuring device is a storage type measuring device that measures the quality of grains stored in the storage section,
The grain conveying device includes a conveyor device that conveys the grains upward, and a grain conveying screw that conveys the grains conveyed by the conveyor device toward a grain tank,
The conveyor device is configured to convey the grains upward and input them to the grain conveying screw side,
A combine harvester characterized in that a portion of the grains fed into the grain conveying screw side is fed into the supply path through the opening and stored in the storage section.

Images