JP2018086019A5 - - Google Patents

Description

Harvesting machine

  The present invention relates to a harvesting machine that temporarily stores a crop harvested from a field while traveling in a harvest tank.

  In such a harvesting machine, the harvesting operation is performed on one or more fields by repeatedly storing the harvested product in the harvested tank and discharging it from the harvested tank. In the combine disclosed in Patent Document 1, when the harvest weight switch is operated, the amount obtained by subtracting the measured weight of the empty grain tank from the measured weight of the grain tank in which the grains are stored is the grain tank. Calculated and displayed as internal kernel weight. Further, when harvesting operations are continuously performed in a plurality of fields, the harvested grain weight for each field can be confirmed by operating the total weight switch. However, in this harvester, one of the measurement conditions of the grain tank is that the horizontal control is turned off, and since normal horizontal control is performed during the harvesting operation, the grain is controlled in real time during the harvesting operation. It is not intended to measure the grain weight inside the tank. In addition, the weight measurement of a grain tank that is unstable during the implementation of horizontal control cannot be expected to be highly accurate, and the grain weight obtained by such measurement is used as the total harvested grain weight of each field. When used as an integrated value for the calculation, the total harvested grain weight in each field is inaccurate. Inaccurate total harvested grain weight adversely affects farm management such as soil improvement, fertilization management, and water management.

Japanese Patent Laid-Open No. 10-229740

  Based on the above situation, first, regardless of the measurement conditions that affect the measurement reliability, the amount (yield) of the harvest stored in the harvest tank is measured, and the yield is displayed. It is hoped that this can be confirmed. In cases where the total yield of each field is used for farm management, it is desired that the total yield of each field is calculated based on highly reliable measurement results.

The harvesting machine according to the present invention includes a crop tank that temporarily stores a crop that is harvested while traveling, a measuring device that measures the amount of the crop stored in the crop tank, and the measuring device. A yield calculation unit that calculates a yield of the harvest based on the measurement result of the method, the yield calculation unit remaining in the harvest tank after the unloading operation for discharging the harvest from the harvest tank. The remaining amount of the tank which is the amount of the harvested product is calculated, and the yield calculated in the harvesting operation after the unloading operation is corrected based on the remaining amount of the tank.

In a preferred embodiment of the present invention, the yield calculation unit includes a measurement status determination unit that determines whether the measurement environment of the measuring instrument is a high-reliability measurement status that provides high-reliability measurement. Calculating the high reliability yield, which is the yield calculated based on the measurement result of the measuring device in the high reliability measurement situation, integrating the high reliability yield, and the yield input by the operator In response to the measurement command, the high-reliability measurement state is controlled to appear.

In one preferred embodiment of the present invention, in response to the yield measurement command, the harvester vehicle body is shifted to a horizontal posture.

It is a schematic diagram explaining the basic principle of the yield measurement and yield display in this invention. It is a side view of a combine which is one of the specific embodiments of the present invention. It is a top view of a combine which is one of the specific embodiments of the present invention. It is a front view of a grain tank. It is a vertical front view of the load cell installation location of a grain tank. It is a perspective view of the load cell installation location of a grain tank. It is a functional block diagram which shows the function part of a measurement display control system. It is a chart figure which shows an example of the time-sequential flow of the measurement at the time of harvest work, calculation, and a display. It is a chart figure which shows an example of the time-sequential flow of the measurement at the time of harvest work, calculation, and a display. It is a perspective view which shows another embodiment of the periphery structure of the load cell which measures a grain tank. It is sectional drawing which shows another embodiment of the periphery structure of the load cell which measures a grain tank.

  Before describing a specific embodiment of the harvester according to the present invention, the basic principle of yield measurement and yield display characterizing the present invention will be described with reference to FIG. The harvester schematically shown in FIG. 1 is a harvester that harvests crops such as rice, wheat, and corn, and is equipped with a crop tank 9. In the harvesting operation, the harvested products that are harvested while traveling in the field are continuously stored in the harvested tank 9. A measuring device 2 is provided for measuring the amount of the harvest stored in the harvest tank 9 (hereinafter also referred to as yield). The kind of measuring device 2 and its measuring method are not particularly limited in the present application. However, the weight of the harvest tank 9 including the harvest is measured, the weight of the harvest tank 9 is subtracted from the weight, and the weight of the harvest stored in the harvest tank 9 is calculated. A measurement method that calculates the yield from the weight is preferred. The yield calculation unit 5 has a function of calculating the yield based on the measurement result output from the measuring device 2.

  Further, a state detector group 3 including various state detectors for detecting the operating state of the harvester is arranged. Measurement status determination for determining whether the measurement environment of the measuring device 2 is a high-reliability measurement situation that provides a high-reliability measurement or a low-reliability measurement situation that provides a low-reliability measurement from the detection result of the state detector group 3 A part 60 is provided. The high-reliability measurement situation is obtained by the state where the harvester is stopped, the state where the harvesting machine is maintained, the state where the load is not applied to the harvest tank 9, or the like. If the state is missing, a low-reliability measurement situation occurs. Therefore, the state detector group 3 includes a stop state of the harvesting machine, a horizontal posture of the harvesting machine, a power transmission state to the harvesting work device, a non-working state of the harvesting work device, and a state of the harvesting device. Sensors and switches to be detected are included.

  When the harvesting machine arrives at the field to be harvested and the harvesting operation is started while traveling, the measurement results from the measuring device 2 output at a predetermined measurement cycle are sequentially input to the yield calculation unit 5. Is done. Whether each measurement result is in a high-reliability measurement situation or in a low-reliability measurement situation is determined by the measurement situation determination unit 60, and the determination result is related to each measurement result. It is attached. In the example of FIG. 1, the identification code “A” is assigned to the determination result of the high reliability measurement situation, and “B” is assigned to the determination result of the low reliability measurement situation.

  The yield calculation unit 5 calculates the yield based on the received measurement result. At that time, the determination result related to the corresponding measurement result is directly carried over to the calculated yield. In other words, the yield calculated from the measurement result under the high-reliability measurement situation is a high-reliability yield, and “A” is given, and the yield calculated from the measurement result under the low-reliability measurement situation is the low-reliability yield. And “B” is given.

  Each yield calculated by the yield calculation unit 5 is sent to the display unit 7 regardless of whether it is a high-reliability yield or a low-reliability yield. The display unit 7 displays the received yield in a form that can be grasped by the driver using a display such as the liquid crystal panel 70. The display form may be either analog (chart) display or digital (numerical) display. However, if the measurement cycle is short and the update interval of the displayed yield is short, a stage bar graph or area ratio graph will be displayed. Such an analog display is easier to see.

  In order to satisfy the requirement to display the high reliability yield and the low reliability yield in a form that can be distinguished, the high reliability yield and the low reliability yield may be displayed in different areas. Alternatively, the display color of the high reliability yield and the low reliability yield may be changed, and an identifier (mark or illustration) that can identify them may be given to each yield display. When the high reliability yield and the low reliability yield are displayed without distinction, the high reliability yield and the low reliability yield may be displayed in the same display location and in the same display form.

  In this embodiment, the display unit 7 displays the yield regardless of whether the yield to be displayed is a high reliability yield or a low reliability yield. As a result, even if the measurement environment is not capable of obtaining a high reliability yield, such as during traveling with rolling, the yield at that point is displayed sequentially even though the reliability is low. The approximate amount (yield) of the harvest stored in the harvest tank 9 can be grasped realistically. In addition, when the harvester stops for some reason and the harvest tank 9 is in a stable state suitable for measurement, a high-reliability yield is displayed. Through the yield display, the driver can It is possible to grasp the yield that approximates the actual yield.

  Further, the harvester is provided with a yield measurement switch (hereinafter also referred to as a yield measurement SW) 32 for controlling each device of the harvester so that a highly reliable measurement situation appears forcibly. Yes. By turning on the yield measurement SW 32, the driver can display the high reliability yield on the display unit 7. That is, when the yield measurement SW 32 is turned on, a yield measurement command that is a highly reliable measurement condition appearance command is generated. In response to this yield measurement command (high reliability measurement condition display command), the harvester car body stops, the harvester car body shifts to the horizontal position, the power to the harvesting work equipment is cut off, and the harvesting work equipment is turned off. Of the operations such as returning to the work position and fixing the unload work device at the storage position, a preset operation is executed. Since it is possible to relate that the yield calculated due to this yield measurement command is based on the measurement result under the high reliability measurement situation, the example of FIG. An identification code “Z” indicating a reliability yield is assigned. If the measurement environment that appears in response to the yield measurement command is made stricter than the measurement environment as the determination condition in the measurement state determination unit 60, the yield measurement SW 32 is turned on, so that the highest reliability can be obtained. The yield will be calculated.

  Next, one specific embodiment of the harvester according to the present invention will be described with reference to the drawings. FIG. 2 is a side view of a combine as an example of a harvesting machine, and FIG. 3 is a plan view. This combine is a self-removable combine, and a body frame 10 constituting the body is supported on the ground by a pair of left and right crawler travel devices 11. A mowing unit 12 that harvests the planted cereals to be harvested and conveys the harvested cereals toward the rear of the fuselage is arranged at the front of the fuselage. Threshing device 15 for threshing / sorting harvested cereals, grain tank 9 for storing the grain selected and recovered by the threshing device 15, unloading the grain from the grain tank (a kind of harvest tank) 9 An apparatus 8, an exhaust straw processing apparatus 16 for processing the exhaust straw, and the like are arranged. The operation console 13 is equipped with a liquid crystal panel 70 which is a component of the display unit 7 which is a control module for displaying various types of information, along with a control lever and a shift lever.

  The threshing device 15 threshs the tip of the harvested cereal cocoon conveyed from the reaping unit 12, and cerealized into grains by a sorting action (not shown) provided in the threshing device 15. And separated into dust such as straw scraps, etc., and a single grain is conveyed to the grain tank 9 as a harvest. The waste straw after the threshing process is shredded by the waste straw processing apparatus 16.

  As can be understood from FIG. 2 and FIG. 3, a grain transport mechanism for feeding the grain from the threshing device 15 to the grain tank 9 is arranged. This grain conveying device is composed of a first thing collecting screw 17a provided at the bottom of the threshing device 15 and a screw conveyor type cerealing device 17b. The grain that has been laterally fed by the first thing collecting screw 17a is conveyed upward by the cerealing device 17b and is fed into the grain tank 9 through the inlet formed in the upper part of the grain tank 9. In addition, although illustration is abbreviate | omitted, in the upper end area | region of the whipping apparatus 17b, the rotary blade which jumps a grain toward the grain tank 9 is provided, and a grain is as uniform as possible in the grain tank 9. It has been devised to store in a horizontal distribution state.

  The unloading device 8 includes a bottom screw 81 provided at the bottom of the grain tank 9, a vertical feed screw conveyor 82 provided on the rear side of the machine body of the grain tank 9, and a horizontal extending above the threshing device 15. And a feed screw conveyor 83. The grains stored in the grain tank 9 are fed from the bottom screw 81 to the transverse feed screw conveyor 83 via the longitudinal feed screw conveyor 82, and from the discharge port 84 provided at the front end of the transverse feed screw conveyor 83 to the outside. Discharged. The vertical feed screw conveyor 82 is configured to be rotatable around the vertical axis P <b> 2 by the operation of the electric motor 85, and the horizontal feed screw conveyor 83 swings up and down around the horizontal axis P <b> 1 at the base end by the hydraulic cylinder 86. It is configured to be operable. Thereby, the discharge port 84 of the transverse feed screw conveyor 83 can be positioned at a position where the grain can be discharged to a transport truck or the like outside the machine. The position where the transverse screw conveyor 83 is substantially horizontal and the entire transverse screw conveyor 83 is within the outline of the harvester in plan view is the home position of the transverse screw conveyor 83 (home position of the unloading device 8). In this home position, the transverse feed screw conveyor 83 is firmly held and fixed from below by a holding device 87.

  As shown in FIG. 4, the bottom of the grain tank 9 is inclined so that the left bottom wall 91 and the right bottom wall 92 create a wedge shape facing downward. A bottom screw 81 is disposed. The left side wall 93 and the right side wall 94 connected to the upper ends of the left bottom wall 91 and the right bottom wall 92 are substantially upright. Upper ends of the left side wall 93 and the right side wall 94 are connected by a top wall 95. With such a structure of the grain tank 9, the grain put into the grain tank 9 flows down toward the bottom screw 81.

  Although not shown in detail, a cylindrical swing support shaft 90 is provided at the rear end of the grain tank 9 (see FIG. 2). The swing axis of the swing support shaft 90 coincides with the vertical axis P2, and the grain tank 9 has an outer horizontal swing around the vertical axis P2 as shown by the dotted line in FIG. It is possible to move. That is, the grain tank 9 projects from the threshing device 17b to the working position, protrudes laterally outward, and the front side is separated from the threshing device 15 and behind the control unit 14 and the threshing device 15 The position can be changed over the maintenance position where the right side of the door is opened.

  This combine is provided with a load cell 20 constituting a measuring device 2 that outputs the weight of the grain stored in the grain tank 9 as a measurement result in order to obtain the yield in the field. The load cell 20 is provided in a state of being supported by the body frame 10 so as to receive the load of the grain tank 9 located at the work position and measure the weight. As the grain tank 9 rotates from the maintenance position toward the work position, the weight measuring position Z (see FIG. 5) allows the load cell 20 to measure the weight while receiving and supporting the lower end support portion of the grain tank 9. ) Is provided.

  As shown in FIGS. 4 and 5, the lower end support portion of the grain tank 9 guided by the receiving guide body 21 is supported so as to be rotatable around the horizontal axis and can roll on the receiving guide body 21. A roller 22 is used. The roller 22 is rotatably supported by a lateral support shaft 22a with respect to the support member 97 attached to the front lower portion of the grain tank 9 so as to protrude below the lower end portion of the support member 97. Yes. Further, when the grain tank 9 is in the working position, the roller 22 is provided in a state of being positioned below at a substantially central portion in the left-right width direction of the grain tank 9 when the grain tank 9 is viewed in the longitudinal direction of the machine body. Yes. In addition, the support member 97 is being fixed to the lower end part of the front side wall 96 of the grain tank 9, as shown in FIG.

  The receiving guide body 21 switches between a load receiving state that is placed from above with respect to the weight detection unit 20a provided at the top of the load cell 20 and a retracted state that retreats outward so as to open the top of the load cell 20. It is provided freely. That is, as shown in FIG. 5 and FIG. 6, it is fixed to the body frame 10 via the bracket 10a. The base end portion of the receiving guide body 21 is supported by the bracket 10a so as to be rotatable around the machine body longitudinal axis P4.

  When the receiving guide body 21 is switched to the load receiving state, as shown by the solid line in FIG. 5, the guide placement surface 21a of the receiving guide body 21 is positioned closer to the body side than the base end, When the guide body 21 is switched to the retracted state, as shown by the phantom line in FIG.

  As shown in FIG. 5, the guide mounting surface 21 a is a roller 22 that is rolled and guided as the grain tank 9 rotates from the maintenance position toward the work position in a state in which the guide placement surface 21 a is switched to the load receiving state. Is formed in an inclined posture so as to be inclined at a gentle inclination angle so as to be displaced upward.

  The load cell is positioned below the receiving guide body 21 switched to the load receiving state and is received by the weight detection unit 20a and the main body portion 20b of the load cell 20 is placed and supported. 20 is attached to the fuselage frame 10.

  As described above, since the load on the machine body front side of the grain tank 9 in the work position is received by the load cell 20 via the receiving guide body 21, the grains stored in the grain tank 9 by the load cell 20. Can be measured. In addition, in the swing support shaft portion 90 that supports the grain tank 9 on the machine frame 10 so as to be swingable, there is flexibility (not shown) so that the front end side of the grain tank 9 can be slightly tilted in the vertical direction. It is formed, the load of the grain tank 9 can be received by the load cell 20 using the flexibility, and the weight of the stored grain can be measured.

  The measurement result (measured value) of the load cell 20 may cause an error due to the tilt of the combine body, but the measurement error due to the tilt of the body is corrected. Yes. This is because the detection values from a left / right inclination angle sensor that detects the left / right inclination angle of the airframe and the front / rear inclination angle sensor that detects the front / rear inclination angle, and a calculation for correction obtained in advance by experiments or the like are not shown. The measurement result of the load cell 20 is corrected using the equation. The storage amount (yield) of the grain in the grain tank 9 that changes sequentially as the cutting operation is performed is measured by the load cell 20, and the yield calculated based on the measurement result is described in detail below. It is displayed on the liquid crystal panel 70 by the method described.

  FIG. 7 shows functions centered on the control unit 100 in the control system for measuring and displaying the yield (yield). The control system, the principle of yield measurement and yield display described in FIG. The control unit 100, which is the core of this control, receives the measurement result of the load cell 20, the operation input data from the operation input device 30, and the detection result from the state detector group 3. The state detector group 3 is a general term for sensors, switches (abbreviated as SW), and the like that detect the state of the devices that constitute the combine. The state detector group 3 includes, for example, a speed detector that detects the stop of the combine, a detector that detects a shift to the horizontal position that is the home position of the horizontal control mechanism of the vehicle body mounted on the combine, and the cutting unit 12. And a detector that detects the state of the clutch that controls the transmission of power to the threshing device 15, and the home position of the unloading device 8 that is held and fixed by the holding device 87 of the lateral feed screw conveyor 83 (of the unloading device 8). And a detector for detecting the storage position). The operation input device 30 is a device operated by a driver (worker) to give a control command to the control system, and includes a work start SW 31 and a yield measurement SW 32.

  When the work start SW 31 is operated after arriving at the field to be harvested and the field is confirmed, a command for triggering an initial setting process for the harvesting work or the like is given. This initial setting process includes resetting various variables and control parameters used in the control unit 100 and storing or transferring data to be stored (such as yield per field). By operating the yield measurement SW 32 during the harvesting operation or at the end of the harvesting operation, various operating devices are driven so that the high reliability measurement status is displayed, and the yield in the displayed high reliability measurement status is also displayed. A command to perform the measurement is given. The operation input device 30 can be constructed in an integrated manner through a touch panel provided on the operation console 13.

  In the control unit 100, a yield calculation unit 5, a measurement state determination unit 60, and a display data generation unit 71 are constructed. Based on the detection result from the state detector group 3, the measurement state determination unit 60 has a high reliability measurement state in which the measurement environment of the load cell 20 provides a high reliability measurement or a low reliability in which a low reliability measurement is provided. Judge the measurement status and output the result. The yield calculation unit 5 calculates the yield that is a high reliability yield from the measurement result of the load cell 20 under the high reliability measurement situation, and the low reliability yield from the measurement result of the load cell 20 under the low reliability measurement situation. Calculate the yield.

  The yield calculation unit 5 includes a first calculation unit 51, a second calculation unit 52, and an integration unit 53. The first calculation unit 51 calculates the yield from the measurement result of the load cell 20. At this time, the calculated yield is calculated based on the determination result of the measurement state determination unit 60 as a low reliability yield and a high reliability yield. It is divided into. The second calculation unit 52 classifies the high reliability yield calculated by the first calculation unit 51 into a non-accumulation yield and an accumulation yield. In a harvesting operation in one field, when grains are harvested multiple times the capacity of the grain tank 9, the grain tank 9 is unloaded (grain discharge) in order to calculate the yield of this field. Every time, it is necessary to measure the grain that has been stored so far and to integrate the yield calculated from the positioning results. The high-reliability yield used for this integration is the integration yield, and the high-reliability yield obtained at a time unrelated to other unloading operations is the non-integration yield. The second calculation unit 52 can determine whether or not the received high reliability yield is based on the measurement result performed accompanying the unloading operation, based on the determination result from the measurement situation determination unit 60. . The integration yield is transferred to the integration unit 53, stored in the memory as a field integration value for the field unit yield calculation, and integrated to the previous integration yield as necessary. Since the non-accumulating yield indicates the highly reliable harvest amount stored in the grain tank 9 at that time, it can be used to display it as the highly reliable current tank yield. The accumulating unit 53 accumulates the accumulating yields that are sequentially received, and outputs the accumulating yields in units of fields. The total field integrated value after the end of the harvesting operation in one field is the total field yield, and is recorded in association with the field ID. At the stage before harvesting, the total field integrated value is the field yield obtained up to that point, and is added to the non-accumulated yield or low confidence yield, which is the high reliability yield calculated thereafter. Presently used as a yield.

  The display data generation unit 71 constitutes the display unit 7 together with the liquid crystal panel 70. Based on each yield received from the yield calculation unit 5, the display data generation unit 71 displays the tank current yield display data indicating the amount of grain stored in the grain tank 9, the current yield per field, or the total field yield. Generate display data for the field yields shown. As illustrated in FIG. 3, in the liquid crystal panel 70, the tank current yield, the current yield for each field, and the total field yield are calculated by a taste measuring instrument (not shown) according to the selection by the driver. Both the average protein and average moisture of the harvested grain are displayed. The current yield and total field yield of each field are displayed numerically, but the tank current yield is displayed in a hierarchical display such as a stacked bar graph so that the ratio of the total volume of the grain tank 9 can be easily understood. Is displayed.

  An example of a time-series flow of measurement, calculation, and display in the control system described above will be described with reference to FIGS. FIG. 8 shows the flow from the start of work in the field A to the first unload work, and FIG. 9 shows the calculation of the total yield through further unload work (usually multiple unload work) in the field A. The flow until the next field B is transferred is shown.

  First, at time T11, the field A where the harvesting operation is to be performed is confirmed, the operation start SW 31 is operated, the operation conditions are set, and the harvesting operation is started. In this embodiment, the work start SW 31 is also used as a display switch SW for switching the screen display in the liquid crystal panel 70, and the function as the work start SW 31 is activated by long-pressing the display switch SW. To do. In order to simplify the field confirmation work, a field map is displayed on the liquid crystal panel 70 based on the operation of the work start SW 31. By touching the corresponding field from this display screen, the attribute data of the field is displayed, so it is possible to definitely confirm the field to be worked. An initialization process including initialization (reset) of various buffers and temporary storage memory is executed by the operation of the work start SW 31. At this time, in order for the driver to visually recognize the result of the initialization process, various display values on the liquid crystal panel 70 illustrated in FIG. 3 are displayed as “0” or initial values.

  A measurement value is output by weight measurement at a predetermined measurement cycle by the load cell 20 during harvesting. This measured value is indicated by “a” with a subscript in FIG. 8, and the subscript is an ordinal number indicating a time series. Subscripts appearing after that are also ordinal numbers indicating the time series. The measurement timing is indicated by white circles, and the numbers given above each white circle are schematic numerical values indicating measured values. The measurement result used for the calculation process in the yield calculation unit 5 is a measurement value as a representative value derived by a filter function using the measurement value obtained at a predetermined time interval as a parameter. ". The simplest of the filter functions are arithmetic and moving averages. The timing at which this measurement result is obtained is indicated by black circles, and the numbers given above each black circle are numerical values indicating the contents. The yield calculated by the yield calculation unit 5 from this measurement result is indicated by “Q” with a subscript. Again, the numbers attached to the periphery of “Q” in the figure indicate the yield, but here, the same numerical values as the measured values are used for convenience. This yield is handled as a low-reliability yield, but is used as a display value (indicated by K in the figure) indicating the in-tank yield of the liquid crystal panel 70. Furthermore, it is used as a display value indicating the field yield. This display value is indicated by H (numerical value) in the figure, and this numerical value is a field identification number, and S is used as a variable for integration. That is, H (numerical value) = S + K.

  Since the yield in the tank displayed on the liquid crystal panel 70 is a low-reliability yield, it is assumed that the yield measurement SW 32 is operated at time T12 in order to obtain a high-reliability yield. As a result, the combine stops and returns to a horizontal posture, and the harvesting device is in a non-working state. The yield calculated from the measurement results obtained in this situation (indicated by a large white circle and A10 in the figure) is a high reliability yield (Q10 in the figure).

  Note that one of the important conditions for more reliable yield measurement is that the transverse feed screw conveyor 83 of the unloading device 8 is housed so that the weight of the holding device 87 is firmly loaded. . If it does not fit securely, the weight of the grain tank 9 cannot be measured accurately, and as a result, the calculated yield becomes inaccurate. For this reason, when the yield measurement SW 32 is operated, a lowering command for lowering the transverse feed screw conveyor 83 to the cradle of the holding device 87 is issued. The measurement result after the elapse of a predetermined time after the descending command is issued is used for calculating the high reliability yield.

  At the time T13 when the grain tank 9 is full, the unloading operation is performed. At the time of unloading, the combine stops and returns to a horizontal posture, and the harvesting equipment is in a non-working state. At this timing, the grain stored in the grain tank 9 is measured, and high reliability measurement is performed. The measurement result A20 in the situation is obtained. Furthermore, the high reliability yield Q20 is calculated from the measurement result A20. Further, Q20 is substituted for S, which is a variable for integration. Thereafter, the harvesting operation is started again, and when the point reliability yield Q21 is obtained, it is displayed as the in-tank yield, and is added to Q20 which is the value of S of the variable for integration, and the value of H (1) It is also displayed as a certain field yield.

  When the harvesting operation in the field A is completed at the time T14, the final unloading operation for discharging the kernel stored in the kernel tank 9 is performed. Prior to that, the measurement in the high reliability measurement situation is performed. Is done. This measurement result (shown by a large white circle and A30 in the figure) is obtained, and a high reliability yield (Q30 in the figure) is also calculated. The total yield in the field A is calculated by adding the last calculated high reliability yield to the integrated value integrated so far. In this example, the total yield is H (1) = Q20 +... + Q30 and is recorded as the total yield of the field A.

  At time T21, the combine moves from the field A to the field B, starts the harvesting operation again, and performs similar grain measurement, yield calculation, and yield display control.

  Although not described in the description of FIG. 8 and FIG. 9, when the remaining amount of the grain is generated in the grain tank 9 after the unloading operation, the remaining amount becomes an error in the next yield measurement. End up. In order to avoid this error, the control unit 100 detects the presence of the remaining amount in the grain tank 9 from the measurement result, notifies the control unit 100, and gives a warning for prompting the remaining amount to be discharged. Is provided. Further, as an exception process when the remaining amount is not discharged despite the warning, the integrating unit 53 has a function of calculating the estimated remaining amount and correcting the estimated remaining amount when calculating the field yield. It has been.

  Since the yield calculation performed prior to the unloading operation is necessary for calculating the field yield, the operation of the yield measurement SW 32 is incorporated in the unloading operation procedure in order to perform the yield calculation. However, there are some drivers who feel that it is troublesome to perform the yield calculation after operating the yield measurement SW 32 to completely reveal the high reliability measurement situation. For this reason, a simple mode may be provided in which the operation of the yield measurement SW 32 is omitted, and the yield measurement is automatically performed before the grain discharge by simply performing the unloading operation.

[Another embodiment]
(1) In the above-described embodiment, the weight measurement of the grain tank 9 is performed by setting the load cell 20 between the lower end of the floating structure and the body frame 10 with the one end side as a swing fulcrum and the other end side as a floating structure. Although the structure to arrange | position is employ | adopted, it replaces with this and the structure which supports the grain tank 9 with the several support point with respect to the body frame 10, and arrange | positions the load cell 20 to the support point may be employ | adopted.

(2) Furthermore, as a measuring device 2 for calculating the yield of the grain stored in the grain tank 9, in addition to measuring the weight including the grain tank 9, the weight or volume of the grain is directly measured. Such a measuring device may be adopted.

(3) The division of the functional units shown in FIG. 7 is an example, and the integration of the functional units and the division of the functional units are arbitrary. Any configuration may be used as long as the control function of the present invention can be realized, and these functions may be realized by hardware and / or software.

(4) Another embodiment relating to a structure for measuring the weight of the grain tank 9 using the load cell 20 for yield calculation is shown in FIGS. FIG. 10 is a perspective view of the vicinity of the load cell 20 during the transition of the grain tank 9 from the maintenance position to the work position. FIG. 11 is a cross-sectional view of the vicinity of the load cell 20 when the grain tank 9 returns to the work position. Also in this alternative embodiment, the load cell 20 is mounted on the fuselage frame 10. A receiving guide piece 121 that guides the lower part of the grain tank 9 toward the weight detection unit 20 a of the load cell 20 is arranged so as to cover the load cell 20. The receiving guide piece 121 receives and supports the lower end of the grain tank 9 as the grain tank 9 rotates from the maintenance position toward the work position, and the weight detecting unit 20a of the load cell 20 supports the grain tank 9. The weight of the grain tank 9 is measured by the load cell 20 there. The receiving guide piece 121 is formed with an inclined surface so that the grain tank 9 is guided while being lifted as the grain tank 9 rotates from the maintenance position to the working position. A flat surface further extends from the inclined surface, and a tip portion located at the tip is an inclined surface inclined downward.

  The receiving guide piece 121 has a skirt portion, and is pivotally supported by a pivot pin so as to be swingable around a machine body longitudinal axis P4 along the machine body longitudinal direction with respect to a bracket 110a fixed to the machine body frame 10. The through hole formed in the bracket 110a for inserting the pivot pin has a vertical size larger than that of the pivot pin. As a result, flexibility is created between the pivot pin and the through hole. With this accommodation, the receiving guide piece 121 can be displaced up and down within a predetermined range with respect to the longitudinal axis P4 of the machine body. That is, the receiving guide piece 121 is switched between a load receiving state that is positioned so as to cover the weight detection unit 20a of the load cell 20 from above and a retracted state that is retracted upward and outward so as to open the upper portion of the load cell 20. It is free. Further, with this structure, when the upper portion of the load cell 20 is opened, the load cell 20 can be attached and detached without requiring the receiving and guiding piece 121 to be attached and detached. In this alternative embodiment, as shown in FIG. 11, the weight detection unit 20 a of the load cell 20 is covered with a cap member 20 </ b> A formed in a downward cylindrical shape from above. Therefore, at the work position of the grain tank 9, the upper surface of the cap member 20A is in contact with the lower surface of the receiving guide piece 121, and the lower surface of the cap member 20A is in contact with the pressure receiving surface of the weight detection unit 20a from above. That is, the load on the front side of the grain tank 9 is received by the load cell 20 via the receiving guide piece 121 and the cap member 20A.

  Next, a structure for applying the load on the front side of the grain tank 9 to the receiving guide piece 121 at the work position will be described. An angle-shaped support base 123 is attached to the lower part of the grain tank 9, and the roller 22 is rotatably supported on a vertical wall 123a of the support base 123 via a lateral support shaft 22a. The lower end of the roller 22 is positioned below the lower surface of the horizontal wall 123 b of the support base 123 so that the roller 22 is guided to contact with the receiving guide piece 121. For this reason, in a state where the roller 22 is guided by the receiving guide piece 121, the horizontal wall 123 b of the support base 123 does not contact the receiving guide piece 121, and the roller 22 is detached from the tip end portion of the receiving guide piece 121. For the first time, the horizontal wall 123 b of the support base 123 comes into surface contact with the flat surface of the receiving guide piece 121. In order to ensure this surface contact, the support base 123 is attached to the grain tank 9 through an adjustment mechanism so that the height can be adjusted. As shown in FIG. 11, the adjustment mechanism includes, for example, a fixing bolt that fixes the support base 123 to the grain tank 9 using a long hole, and an adjustment bolt that presses the upper end against the lower surface of the grain tank 9. It can be easily configured by a combination.

  Further, an auxiliary guide 190 is provided at the lower part of the grain tank 9 adjacent to the support base 123. The auxiliary guide body 190 is a sled member attached to the front surface of the support member 97 and includes an auxiliary roller 191. When the grain tank 9 moves from the maintenance position to the work position, the auxiliary roller 191 rolls along the inclined surface of the inclined table 111 provided on the machine body frame 10. The auxiliary guide body 190 and the inclined base 111 are designed so that the auxiliary roller 191 also has a mutual positional relationship that leaves the inclined base 111 when the roller 22 passes through the receiving guide piece 121. That is, both the roller 22 and the auxiliary roller 191 float in the air at the work position of the grain tank 9, and the lower surface of the horizontal wall 123b of the support base 123 and the flat surface of the receiving guide piece 121 are in surface contact. In a stable state, the weight of the grain tank 9 is measured by the load cell 20.

  The present invention is applicable to corn harvesters and other crop harvesters other than the above-described combine.

2: Measuring device 20: Load cell 3: State detector group 30: Operation input device 31: Work start SW
32: Yield measurement SW
5: Yield calculation unit 51: First calculation unit 52: Second calculation unit 53: Integration unit 60: Measurement status determination unit 7: Display unit 70: Liquid crystal panel 71: Display data generation unit 8: Unload device 9: Grain Tank (harvest tank)
100: Control unit

Claims (3)

A harvest tank that temporarily stores the harvest harvested while traveling; and
A measuring instrument for measuring the amount of the crop stored in the crop tank ;
A yield calculation unit that calculates the yield of the harvest based on the measurement result by the measuring device,
The yield calculation unit calculates a tank remaining amount that is the amount of the crop remaining in the crop tank after the unload operation for discharging the crop from the crop tank, and after the unload operation. A harvester that corrects the yield calculated in the harvesting operation based on the remaining amount of the tank . The measurement environment of the measuring device includes a measurement status determination unit that determines whether or not the measurement environment is a high reliability measurement status that brings about high reliability measurement,
The yield calculation unit calculates a high reliability yield that is the yield calculated based on a measurement result by the measuring device in the high reliability measurement situation, and integrates the high reliability yield,
The harvesting machine according to claim 1, wherein the harvesting machine is controlled so that the high-reliability measurement state appears in response to a yield measurement command input by an operator. The harvester according to claim 2, wherein the harvester vehicle body is shifted to a horizontal posture in response to the yield measurement command.