JP2018108092A5 - - Google Patents

Description

Harvester

  The present invention relates to a harvester for temporarily storing crops harvested from a field in a harvest tank while traveling.

  In such a harvester, the harvest operation is performed while repeatedly storing the harvest in the harvest tank and discharging the harvest tank. In the combine (a kind of harvester) disclosed in Patent Document 1, when the harvest weight switch is operated, an amount obtained by subtracting the measured weight of the empty grain tank from the measured weight of the grain tank in which the grain is stored is the grain tank. Determined and displayed as internal kernel weight. In addition, when harvesting work is continuously performed in a plurality of fields, it is possible to confirm the weight of harvested grains for each field by operating the total weight switch. However, with this harvester, while repeating the storage in the harvest tank and the discharge from the harvest tank, the amount of grains harvested in the field up to that point in the middle of performing the harvesting operation of one field ( Accumulated yield) can not be confirmed.

Unexamined-Japanese-Patent No. 10-229740

  In view of the above situation, the subject of the present invention is not only the final total yield of the field but also the harvesting work that is performed while repeating the storage in the crop tank and the discharge from the crop tank for one field. , To provide a harvester capable of confirming the yield of the field during the harvesting operation.

Harvesting machine according to the present invention includes a crop tank for temporarily storing the crop harvested with run line, and unloading device for discharging the crop from the crop of tank, stored in the crop tank A measuring device for measuring the amount of the harvested material; a yield calculating unit for calculating an integrated yield which is a total amount of the harvested material based on the yield calculated from the measurement result of the measuring device; A current yield, which is the amount of stored harvest in the harvest tank, and a display unit for displaying the integrated yield, which are calculated from the measurement results of the container, and the yield calculating unit And the integrated yield is calculated by integrating the yield calculated from the measurement result of the measuring device when the unload device is in the storage state, and the display unit includes the display of the current yield Display screen A display screen including a display of the integrated yield, it is possible to switch the display contents between.

In one of the preferred embodiments of the present invention, the display unit can display the current yield in a level display format, and can display the integrated yield numerically.

  In the harvest operation performed while repeatedly storing in the harvest tank and discharging from the harvest tank, to obtain the total yield of a single field, the harvest stored in the harvest tank prior to the unloading operation It is necessary to calculate the yield of and to accumulate the yield. At that time, if the remaining amount of the harvested material is generated in the harvest tank after the unloading operation, the remaining amount becomes an error in the next yield measurement. In order to avoid this error, in one of the preferred embodiments of the present invention, at the end of the unloading operation of discharging the harvest from the harvest tank, the amount of the harvest stored in the harvest tank is tanked. The remaining amount is measured, and the measured remaining amount corrects the yield.

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

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

  This harvester performs harvesting work for one field while repeating storage in the harvest tank 9 and discharge from the harvest tank 9, and not only the yield of the portion stored in the harvest tank 9 but also the relevant harvest It also has a function to calculate and display the current yield (yield in the middle of harvesting work) from the field including the final total yield of the field. For this reason, at the time of work (also referred to as unloading work) of discharging the harvest from the harvest tank 9 in the middle of the harvesting work, the yield to be discharged is calculated, and the yield is an accumulation for obtaining the yield in field units. Used for

  Furthermore, in this harvester, a condition detector group 3 including various condition detectors for detecting the operating condition of the harvester is disposed. From this detection result of the state detector group 3, it is determined whether the measurement environment of the measuring instrument 2 is a high reliability measurement condition that provides high reliability measurement or a low reliability measurement condition that provides low reliability measurement A unit 60 is provided. This detection result is related to each measurement result. The high reliability measurement situation is obtained by the state where the harvester is stopped or maintaining the horizontal posture, the state where the load on the harvest tank 9 is not biased, etc. If the condition is lacking, it will be a low reliability measurement situation. Therefore, the state detector group 3 includes the stop state of the harvester, the horizontal posture of the harvester, the power transmission state to the harvest work equipment, the non-work state of the harvest work equipment, the state of the harvest discharge equipment, etc. It includes sensors and switches to be detected.

  When the harvester arrives at the field to be harvested, the field confirmation is performed, the field ID of the field is assigned to the harvest operation to be performed from now on, and the variables used for the yield calculation process in the field unit are reset. When the harvesting operation while traveling is started, the measurement results from the measuring device 2 output at a predetermined measurement cycle are sequentially input to the yield calculating unit 5. The yield calculating unit 5 calculates the yield based on the input measurement result. At this time, the determination result related to the corresponding measurement result is taken over to the calculated yield as it is. That is, in the yield calculation unit 5, first, the first calculation processing capable of calculating the yield so as to be able to be divided into the low reliability yield and the high reliability yield from the input measurement result is first executed.

Further, the highly reliable yield is divided into a non-accumulating yield and an integrating yield by the second calculation process. In this second calculation process, it is checked whether or not the calculated yield is calculated from the measurement result of the discharged material in the unloading operation of discharging the material from the material tank 9. From the detection results from the state detector group 3, it can be confirmed that the unloading operation is performed. Therefore, on the basis of this confirmation information, can be the measurement result input to the yield calculation unit 5, to determine if a is whether the measurement result of the previous discharge of crops that have been stored in the harvest product tank 9. The yield of the field unit can be determined by accumulating the yields of the stored harvest calculated each time the stored harvest is discharged (unloaded) from the harvest tank 9. In the second calculation process, when the high confidence yield is considered to be the measurement yield associated with the unloading operation, the high confidence yield is used as an integration yield. The other highly reliable yields are non-accumulating yields, but indicate the amount of highly reliable crops stored in the harvest tank 9 at that point, and are used as highly reliable present tank yields .

  The integration yield is stored as a field integration value for each unloading operation in the field integration process, and is integrated as needed, and the integration value is output as a field integration value. This field integrated value is the amount of crops harvested from the field so far by adding it to the non-accumulating yield obtained each time if the harvesting operation in the field is continuing. Used as a yield. In addition, the field integrated value when the harvesting work in the field is completed is used as field total yield for field management and the like.

  Each yield calculated by the yield calculating unit 5 is sent to the display unit 7 and displayed on a display such as a liquid crystal panel of the display unit 7 according to the request. The display format may be either analog (chart) display or digital (numeric) display, but when the measurement cycle is short and the update interval of the displayed yield is short, the analog display becomes easier to see . The field total yield can be displayed together with the field name linked to the field ID. The present field yield is displayed as information indicating the current yield in the field during the harvesting operation in one field. The non-calculating yield is displayed as information indicating the amount of harvest stored in the harvest tank 9 during the harvesting operation.

  As described above, although the high-reliability yield is used, the high-reliability yield is obtained only when the measurement environment is in the high-reliability measurement state, so that the yield is constantly updated as the harvest operation progresses. Absent. Even if the reliability is low, if the display of the yield is required constantly updated, the low reliability yield will be used. The low confidence yield generated can be displayed as it is as information indicating the amount of harvest stored in the harvest tank 9 during the harvesting operation. Furthermore, the yield obtained by adding the low reliability yield to the field present yield can also be displayed as information indicating the amount of harvest harvested from the field up to that point.

  To meet the requirement to display information based on high confidence yield and information based on low confidence yield in a distinguishable form, the information based on high confidence yield and the information based on low confidence yield are separate areas The display color may be changed, or an identifier (mark or illustration) capable of identifying them may be given to each yield display. When they are displayed without distinction, information based on the high confidence yield and information based on the low confidence yield can be displayed in the same display form in the same display location.

  In particular, it is convenient for the display unit 7 to display the current tank yield etc. regardless of whether it is based on the high reliability yield or the low reliability yield. As a result, even if the measurement environment is not such as to obtain a high-reliability yield while traveling with rolling, etc., the yield at that time is sequentially displayed even though the reliability is low. This is because it is possible to realistically grasp the approximate amount (yield) of the harvest stored in the harvest tank 9.

  Next, one of the specific embodiments of the harvester according to the present invention will be described using the drawings. FIG. 2 is a side view of a combine that is an example of a harvester, and FIG. 3 is a plan view. The combine is a self-propelled combine, and an airframe frame 10 constituting an airframe is supported on the ground by a pair of left and right crawler traveling devices 11. A reaper 12 is disposed at the front of the machine for harvesting the planted grain weirs to be harvested and transporting the reaper for the rear of the machine, and a steering unit 14 provided with an operation console 13 at its rear, A threshing device 15 for threshing and sorting crop straw, a grain tank (one kind of harvest tank) 9 for storing grains sorted and collected by the grain processing device 15, and an unloading for discharging grains from the grain tank 9 A device 8 and an exhaust straw processing device 16 for processing the exhaust straw are disposed. As shown in FIG. 3, 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 information, together with a control lever and a shift lever.

  The threshing device 15 threshes the tip side of the reaping grain carried by the reaper 12, and the grain is separated into single grains by a sorting function (not shown) provided inside the threshing device 15. And separated into dusts such as straw scraps, and the single-grained grain is transported to the grain tank 9 as a harvest. The waste straw after being subjected to the threshing treatment is shredded by the waste straw processing device 16.

  As can be understood from FIG. 2 and FIG. 3, a grain transport mechanism for feeding grains from the threshing device 15 to the grain tank 9 is arranged. This grain conveyance device comprises a first item recovery screw 17 a provided at the bottom of the threshing device 15 and a screw conveyor type grain raising device 17 b. The grain laterally fed by the first item recovery screw 17 a is conveyed upward by the grain raising apparatus 17 b and fed into the grain tank 9 through the inlet formed at the upper part of the grain tank 9. Although not shown, rotary vanes are provided at the upper end region of the grain growing device 17 b for splashing the grains into the grain tank 9, and the grains are as uniform as possible in the grain tank 9. It is devised to be stored in various horizontal distribution state.

  The unloading device 8 includes a bottom screw 81 provided at the bottom of the grain tank 9, a longitudinal feed screw conveyor 82 provided on the aft side of the grain tank 9, and a horizontal extending above the threshing device 15. A feed screw conveyor 83 is provided. The grains stored in the grain tank 9 are fed from the bottom screw 81 through the vertical feed screw conveyor 82 to the transverse feed screw conveyor 83, and externally from the discharge port 84 provided at the tip of the transverse feed screw conveyor 83. Exhausted. Vertical feed screw conveyor 82 is configured to be able to rotate around longitudinal axis P2 by operation of electric motor 85, and horizontal feed screw conveyor 83 is swung up and down around horizontal axis P1 at the base end by hydraulic cylinder 86. It is configured to be operable. As a result, the discharge port 84 of the cross feed screw conveyor 83 can be positioned at a position where the grains can be discharged to a transport truck or the like outside the machine. The position and orientation at which the crossfeed screw conveyor 83 is substantially horizontal and the entire crossfeed screw conveyor 83 fits within the outline of the harvester in plan view are the home position of the crossfeed screw conveyor 83 (home position of the unloading device 8). At this home position, the crossfeed screw conveyor 83 is firmly held and fixed from below by the holding device 87.

  As shown in FIG. 4, the bottom of the grain tank 9 is inclined relative to one another so that the left bottom wall 91 and the right bottom wall 92 create a downward-looking wedge shape, A bottom screw 81 is arranged. 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 ceiling wall 95. Due to such a structure of the grain tank 9, grains fed to the grain tank 9 flow downward toward the bottom screw 81.

  Although not shown in detail, a cylindrical swing support shaft portion 90 is provided at the rear end of the grain tank 9 (see FIG. 2). The rocking axis of the rocking spindle 90 coincides with the vertical axis P2, and the grain tank 9 is horizontally rocked outward around the vertical axis P2, as shown by the dotted line in FIG. It is movable. That is, the grain tank 9 has a working position at which the grain can be received from the grain growing device 17 b and the side of the threshing device 15 b overhangs laterally outward and the front side is separated from the threshing grain 15. It is repositionable over the maintenance position which opens the right side of the.

  The 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 so as to be supported by the machine frame 10 so as to be able 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, a weight measurement position Z where weight can be measured by the load cell 20 while receiving and supporting the lower end support portion of the grain tank 9 (see FIG. 5) A receiving guide body 21 for guiding to the

  As shown in FIGS. 4 and 5, the lower end support portion of the grain tank 9 guided by the receiving and guiding body 21 is rotatably supported around the horizontal axis and can roll on the receiving and guiding body 21. The roller 22 is configured. The roller 22 is rotatably supported by the lateral support shaft 22 a in a state of projecting below the lower end portion of the support member 97 with respect to the support member 97 attached to the front lower portion of the grain tank 9 There is. In addition, when the grain tank 9 is in the working position, the roller 22 is provided at a substantially central portion in the left-right width direction of the grain tank 9 as viewed from the front-rear direction of the grain tank 9 downward. There is. 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.

  As shown in FIGS. 5 and 6, the receiving and guiding body 21 is configured to open the load cell 20 from the load receiving state placed from above with respect to the weight detection unit 20 a provided on the top of the load cell 20. It is provided so as to be switchable to an evacuation state for retracting outward. That is, it is being fixed to the body frame 10 via the bracket 10a. The bracket 10a supports the base end portion of the receiving guide body 21 rotatably around the longitudinal axis P4 of the machine body.

  When the receiving and guiding body 21 is switched to the load receiving state, as shown by the solid line in FIG. 5, the guide mounting surface 21a of the receiving and guiding body 21 is positioned on the inner side with respect to the base end. When the guide body 21 is switched to the retracted state, the guide mounting surface 21a is located on the outer side of the base than the base end portion, as shown by the phantom line in FIG.

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

  The load cell is located below the receiving guide 21 switched to the load receiving state and the weight detecting portion 20a receives the receiving guide 21 and the main body 20b of the load cell 20 is mounted and supported. 20 are attached to the airframe 10.

  As described above, since the load on the machine body front side of the grain tank 9 in the working position is received by the load cell 20 via the reception guide body 21, grains stored in the grain tank 9 by the load cell 20 The weight of can be measured. In the rocking support shaft portion 90 for supporting the grain tank 9 so as to rock freely on the machine frame 10, the front end side of the grain tank 9 can be slightly tilted in the vertical direction (not shown). The load of the grain tank 9 can be received by the load cell 20 using its flexibility, and the weight of the stored grain can be measured.

  The measurement result (measurement value) of the load cell 20 may cause an error due to the tilt of the combine's airframe, but the measurement error due to the tilt of the airframe may be corrected. There is. This is not shown, detected values from the left and right tilt angle sensor that detects the left and right tilt angle of the airframe, and the front and rear tilt angle sensor that detects the front and rear tilt angle, and the calculation for correction previously obtained by experiment etc. The measurement result of the load cell 20 is corrected using the equation The storage volume (yield) of grains in the grain tank 9, which changes gradually as the mowing work is performed, is measured by the load cell 20, and the yield calculated based on the measurement results is described in detail below. It is displayed on the liquid crystal panel 70 by the method to be described.

  FIG. 7 shows a function centered on the control unit 100 in the control system that measures and displays the yield (yield). This control system uses the principle of yield measurement and yield display described in FIG. 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 are input to the control unit 100, which is the core of this control. The state detector group 3 is a generic term such as a sensor or a switch (abbreviated as SW) which detects the state of the device constituting the combine. The state detector group 3 includes, for example, a speed detector that detects a stop of the combine, a detector that detects a transition to a horizontal posture that is a home position of the horizontal control mechanism of the vehicle body equipped in the combine, and the reaper 12 Or a detector for detecting the state of a clutch that controls power transmission to the threshing device 15, the home position of the unloading device 8 in a state of being held and fixed by the holding device 87 of the crossfeed screw conveyor 83 (of the unloading device 8 A detector for detecting the storage position), and the like. The operation input device 30 is a device operated by a driver (operator) to give a control command to the control system, and includes an operation start SW 31 and a yield measurement SW 32.

  When arriving at the field to be harvested, the field is determined, and when the work start SW 31 is operated, a command to trigger an initial setting process of the harvesting operation and the like is given. The initial setting process includes resetting and resetting of various variables and control parameters used in the control unit 100, storage and transfer of data to be stored (such as yield in field units), and the like. By operating the yield measurement SW 32 during the harvest operation or at the end of the harvest operation, the various operation devices are driven so that the high reliability measurement situation appears, and the yield in the appearing high reliability measurement situation A command to execute the measurement is given. The operation input device 30 can be integrally constructed through a touch panel provided on the operation console 13.

  In the control unit 100, a yield calculation unit 5, a measurement status determination unit 60, and a display data generation unit 71 are constructed. Based on the detection result from state detector group 3, measurement state determination unit 60 determines whether the measurement environment of load cell 20 is a high reliability measurement state that provides high reliability measurement or low reliability that results in low reliability measurement. It is determined whether it is a measurement situation, and the determination result is output. The yield calculation unit 5 calculates the yield which is the 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 calculating unit 5 includes a first calculating unit 51, a second calculating unit 52, and an integrating unit 53. The first calculating unit 51 calculates the yield from the measurement result of the load cell 20. In this case, the calculated yield is determined as the low reliability yield and the high reliability yield based on the determination result of the measurement status determining unit 60. Divided into The second calculating unit 52 divides the high reliability yield calculated by the first calculating unit 51 into a non-accumulating yield and an integrating yield. If grain is harvested multiple times the capacity of grain tank 9 in one field harvesting operation, grain tank 9 is unloaded (grain evacuation) in order to calculate the yield of this field. Every time, kernels that have been stored until then must be measured, and the yield calculated from the positioning results must be integrated. The high reliability yield used for this integration is the integration yield, and the high reliability yield obtained at a point unrelated to the other unloading operation is the non-integration yield. The second calculating unit 52 can determine, based on the determination result from the measurement situation determining unit 60, whether the received high-reliability degree yield is based on the measurement result performed concomitantly with the unloading operation. . The integration yield is transferred to the integration unit 53, stored in the memory as a field integration value for the purpose of calculating yield per field unit, and integrated to the previous integration yield as necessary. Since the non-accumulating yield indicates the amount of highly reliable harvest stored in the grain tank 9 at that time, it can be used to display as the highly reliable present tank yield. The integration unit 53 integrates the received integration yields sequentially, and outputs the result as an integrated yield in field units. The total field integrated value after the end of the harvesting work in one field is the field total yield, and is recorded in association with the field ID. At the stage before the harvesting operation, the total of the field integrated value is the field yield obtained up to that point, and is added to the non-accumulating yield or the low confidence yield which is the high confidence yield calculated thereafter. Currently used for display as yield.

The display data generation unit 71 constitutes the display unit 7 together with the liquid crystal panel 70. The display data generation unit 71 displays the current tank yield (corresponding to “the current yield” according to the present invention) indicating the amount of grains being stored in the grain tank 9 based on each yield received from the yield calculation unit 5 Display data of field yield is generated which indicates data, current yield per field unit (corresponding to "accumulated yield" according to the present invention ) or total field yield ( corresponding to "integrated yield" according to the present invention) . As illustrated in FIG. 3, in the liquid crystal panel 70, the present yield of the tank, the present yield of the field unit, and the total yield of the field are calculated by a taste measuring device not shown according to the selection by the driver. Both the average protein and the average moisture of harvested grain are displayed. In addition, although the present yield and the field total yield of the field unit are displayed numerically, the tank current yield is a hierarchical display such as a stacked bar graph so that the ratio of the grain tank 9 to the total volume can be easily understood. Is displayed.

  An example of a time-sequential flow of measurement, calculation, and display in the control system described above will be described using FIGS. 8 and 9. Fig. 8 shows the flow from the start of work in Field A to the first unloading work, and Fig. 9 shows the total yield through further unloading work (usually multiple unloading works) in Field A And the flow until it shifts to the next field B.

  First, at time T11, the field A where the harvesting work should be performed is confirmed, the work start switch 31 is operated, work conditions and the like are set, and the harvesting work is started. In this embodiment, the work start SW 31 is also used as a display switching SW for switching the screen display on the liquid crystal panel 70, and the function as the work start SW 31 is activated by long press of the display switching SW. Do. In addition, in order to simplify the field confirmation work, a map of the field is displayed on the liquid crystal panel 70 based on the operation of the work start SW 31. By touching the relevant field from this display screen, the attribute data of the relevant field is displayed, so that the field to be worked can be confirmed without fail. Note that, by the operation of the work start SW 31, initialization processing including initialization (reset) of various buffers and temporary storage memory is executed. At this time, in order to allow the driver to visually recognize the result of the initialization process, it is displayed that various display values on the liquid crystal panel 70 as illustrated in FIG. 3 are “0” or initial values.

  A measured value is output by weight measurement at a predetermined measurement cycle by the load cell 20 during a harvest run. This measurement value is indicated in FIG. 8 by the subscript “a”, and the subscript is an ordinal number indicating a time series. Subscripts that appear later are also ordinal numbers indicating time series. The measurement timing is indicated by white circles, and the numbers attached above the respective white circles are schematic numerical values indicating measurement 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 values obtained at predetermined time intervals as a parameter, and the suffix “A” in FIG. "Is shown. The simplest of the filter functions is the arithmetic mean or moving average. The timing at which this measurement result is obtained is indicated by black circles, and the numbers attached 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 a subscript “Q”. Also here, the numbers attached around “Q” in the figure indicate the yield, but here, for convenience, the same numerical value as the measurement value is used. Although this yield is treated as a low reliability yield, it 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 which shows field yield. This display value is indicated by H (numerical value) in the figure, 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 in-tank yield displayed on the liquid crystal panel 70 is a low confidence yield, it is assumed that the yield measurement SW 32 is operated at time T12 in order to obtain a high confidence yield. As a result, the combine stops and returns to the horizontal position, and the harvesting equipment is not in operation. The yield calculated from the measurement result (indicated by large white circles and A10 in the figure) obtained in this situation is the highly reliable yield (Q10 in the figure).

  In addition, 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 weight is firmly applied to the holder of the holding device 87. . If it does not fit properly, the weight of the grain tank 9 can not 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 cross feed screw conveyor 83 to the receiving stand of the holding device 87 is issued. The measurement result after the elapse of a predetermined time after the lowering command is issued is used to calculate the high reliability yield.

  At time T13 when the grain tank 9 is full, unloading operation is performed. At the time of unloading work, the combine stops, returns to the horizontal attitude, and the harvesting equipment becomes non-working state, so at this timing, the grains stored in the grain tank 9 are measured, and the reliability is measured. The measurement result A20 in the situation is obtained. Further, 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 harvest 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 the value of the variable S for integration, Q20, and the value of H (1) It is also displayed as a certain field yield.

  At the time T14, when the harvesting work in the field A is completed, the last unloading work of discharging the grain stored in the grain tank 9 is performed, but prior to that, the measurement in the high reliability measurement situation is performed Is done. The measurement results (indicated by large white circles and A30 in the figure) are obtained, and the high confidence yield (Q30 in the figure) is also calculated. The total yield in the field A is calculated by adding the highly reliable yield calculated last to the integrated value accumulated so far. In this example, the total yield is H (1) = Q20 +... + Q30, and is recorded as the total yield of Field A.

  The combine is transferred from the field A to the field B at time T21, and the harvest operation is started again, and the same grain measurement, yield calculation, and control of the yield display are executed.

  Although not described in the description of FIG. 8 and FIG. 9, when the remaining amount of grain is generated in the grain tank 9 after the unloading operation, the remaining amount becomes an error in the next yield measurement It will 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 it of this, and gives a warning for prompting discharge of the remaining amount. Is equipped. In addition, 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 it by the estimated remaining amount when calculating the field yield. It is done.

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

[Another embodiment]
(1) In the embodiment described above, the weight measurement of the grain tank 9 uses the load cell 20 between the lower end portion of the floating structure and the fuselage frame 10 with the one end side as the rocking fulcrum and the other end as the floating structure. Although the arrangement configuration is adopted, instead of this, a configuration may be adopted in which the grain tank 9 is supported at a plurality of support points with respect to the airframe frame 10 and the load cell 20 is arranged at the support points.

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

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

(4) Another embodiment of the structure for measuring the weight of the grain tank 9 using the load cell 20 for calculating the yield is shown in FIGS. 10 and 11. 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 working position. Also in this alternative embodiment, the load cell 20 is mounted on the airframe frame 10. A receiving and guiding piece 121 for guiding the lower part of the grain tank 9 toward the weight detection unit 20 a of the load cell 20 is disposed so as to cover the load cell 20. The receiving and guiding piece 121 receives and supports the lower end of the grain tank 9 as the grain tank 9 rotates from the maintenance position to the working position, and the weight detection portion 20 a of the load cell 20 is received by the grain tank 9. Of the grain tank 9 by the load cell 20 is measured. The receiving and guiding piece 121 is formed with an inclined surface so as to lift and guide the grain tank 9 as the grain tank 9 is rotated from the maintenance position to the working position. A flat surface extends further from this inclined surface, and the tip located at the tip is a downwardly inclined inclined surface.

  The receiving and guiding piece 121 has a skirt portion, and is pivotally supported by a pivot pin pivotably about a longitudinal axis P4 along the longitudinal direction of the body with respect to a bracket 110a fixed to the body frame 10. The through hole formed in the bracket 110a for inserting the pivot pin has a size in the vertical direction larger than that of the pivot pin. As a result, flexibility is created between the pivot pin and the through hole. By this interchange, the receiving and guiding piece 121 can be vertically displaced within a predetermined range with respect to the longitudinal axis P4 of the machine body. That is, the receiving guide piece 121 switches between a load receiving state in which the weight detection unit 20a of the load cell 20 is covered from above and a retracted state in which the load cell 20 is retracted upward to open the upper side of the load cell 20. It is free. Furthermore, with this structure, when the upper side of the load cell 20 is opened, the load cell 20 can be detached without requiring the detachment operation of the receiving guide piece 121. In this alternative embodiment, as shown in FIG. 11, the weight detection portion 20a of the load cell 20 is covered from above with a cap member 20A formed in a downward cylindrical shape. Accordingly, in the working 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 through the receiving guide piece 121 and the cap member 20A.

  Next, a structure for applying a load on the front side of the grain tank 9 to the receiving and guiding piece 121 in the working position will be described. An angled support base 123 is attached to the lower part of the grain tank 9, and a roller 22 is rotatably supported by a vertical wall 123a of the support base 123 via a horizontal 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 table 123 so that the roller 22 is guided in contact with the receiving guide piece 121. Therefore, when the roller 22 is guided by the receiving guide piece 121, the horizontal wall 123b of the support table 123 does not contact the receiving guide piece 121, and the roller 22 separates from the leading end of the receiving guide piece 121. For the first time, the horizontal wall 123b of the support 123 comes into surface contact with the flat surface of the receiving and guiding piece 121. In order to ensure this surface contact, the support base 123 is attached to the grain tank 9 so as to be adjustable in height via an adjusting mechanism. The adjustment mechanism, as shown in FIG. 11, for example, includes a fixing bolt for fixing the support 123 to the grain tank 9 using a long hole, and an adjusting bolt for pressing the upper end against the lower surface of the grain tank 9. It can be easily configured by combination.

  Furthermore, an auxiliary guide body 190 is provided in the lower part of the grain tank 9 adjacent to the support stand 123. The auxiliary guide body 190 is a sled-like member attached to the front surface of the support member 97 and includes an auxiliary roller 191. When the grain tank 9 is moved 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 frame 10. The auxiliary guide body 190 and the inclined table 111 are designed such that the auxiliary roller 191 also has a positional relationship of leaving the inclined table 111 when the roller 22 passes through the receiving guide piece 121. That is, at the working position of the grain tank 9, both the roller 22 and the auxiliary roller 191 float in the air, and the lower surface of the horizontal wall 123b of the support 123 and the flat surface of the receiving guide piece 121 make surface contact In the steady 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 instrument 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: unloading device 9: grain Tank (harvest tank)
100: Control unit

Claims (3)

A harvest tank that temporarily stores harvested crops while driving;
An unloading device for discharging the harvest from the harvest tank;
A measuring device for measuring the amount of harvest stored in the harvest tank ;
A yield calculation unit that calculates an integrated yield, which is a total amount of harvested materials, based on the yield calculated from the measurement result of the measuring device;
The present yield which is the amount of stored harvest in the harvest tank calculated from the measurement result of the measuring instrument, and a display unit for displaying the integrated yield
The yield calculating unit calculates the integrated yield by integrating the yield calculated from the measurement result of the measuring device when the body of the harvester is in the horizontal posture and the unloading device is in the storage state. ,
The harvester capable of switching display content between the display screen including the display of the current yield and the display screen including the display of the integrated yield . The harvester according to claim 1, wherein the display unit can display the current yield in a level display format, and can display the integrated yield numerically. At the end of the unloading operation of discharging the harvest from the harvest tank, the amount of the harvest stored in the harvest tank is measured as the tank remaining amount, and the measured remaining amount corrects the yield The harvester according to claim 1 or 2.