JP4493015B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  In the conventional combine, the cereal is harvested by the harvesting unit, the harvested cereal is threshed by the threshing unit, and the cerealed cereal (excretion) is released to the outside by the exclusion processing unit. A grain is selected from the threshed grain and waste by a sorting unit, and the selected grain is supplied to a Glen tank via a frying cylinder, and the supplied grain is placed in the Glen tank. Some harvesting operations are performed such that the stored grain is discharged from the grain tank to the outside by a grain discharging device.

  In such a combine, for example, the moisture disposed in the grain tank so that a part of the grains supplied to the grain tank can be crushed and the moisture content of the grain can be measured. A sensor may be used to determine the moisture content of the grain during harvesting operations. In this case, the grain after measurement in a crushed state after the moisture amount is measured by the moisture sensor is stored in the Glen tank.

  However, in the conventional combine as described above, the crushed grain after the measurement of the moisture content by the moisture sensor is stored in the Glen tank, so the harvested grain obtained by the harvesting operation After the measurement of the crushed state, the grains are mixed, which is not preferable.

  The present invention has been made in view of the prior art, and can reduce the amount of mixed grains after measurement after the moisture content is measured with a moisture sensor among the grains obtained in the harvesting operation, An object of the present invention is to provide a combine that can reduce the generation of post-measurement grains that are crushed by a moisture sensor as much as possible when measuring the amount of moisture.

In order to solve the above-mentioned problem, the present invention is a combine comprising a moisture sensor that measures the moisture content of a grain during a harvesting operation, and a control device that controls the moisture sensor. Harvested grain that has been threshed by the threshing unit and selected by the sorting unit from the harvested cereal that has been harvested by the harvesting unit, and is conveyed through the milling cylinder and formed through the grain supply port formed in the Glen tank A pair of electrode rollers disposed in the grain tank so that the moisture content of a part of the harvested grain supplied into the grain tank can be measured; The electrical resistance value between the electrode rollers is detected while being crushed between the electrode rollers, and the detected electrical resistance value is output as information relating to the moisture content of the harvested grain . Every predetermined period Upon obtaining the moisture content of the grain, the moisture sensor is operated for a short time than the predetermined period to measure the electrical resistance between the pair of electrode roller while crushing the grain, the operating time of the moisture sensor Based on the measured value, it is configured to obtain the moisture content of the grain during the predetermined period, and the grain tank is provided with the grain after measurement after being crushed by the moisture sensor and the moisture content is measured. There is provided a combine characterized in that a discharge port for discharging outside the machine and a guide member for guiding the grain after measurement to the outside through the discharge port are provided .

In the combine according to the present invention, the amount of mixed grains in the harvested cereal after measurement after the moisture amount is measured by the moisture sensor is increased as the operation time of the moisture sensor is increased. When determining the moisture content of the grain for each predetermined cycle, the control device operates the moisture sensor for a time shorter than the predetermined cycle, and the grain during the predetermined cycle based on the measured value within the operating time of the moisture sensor. It is configured to obtain the moisture content of the grains. Furthermore, an outlet for discharging the grain after measurement after being crushed by the moisture sensor and measuring the amount of moisture to the Glen tank, and the grain after measurement through the outlet And a guide member for guiding outside the machine.

The front Symbol grain tank, a grain supply detection device grain in the grain tank to detect whether it is supplied is provided, said control device, said grain supply detection result based grain detection device By configuring the moisture sensor to operate only when it is determined that it is being supplied, the amount of mixed grain in the harvested grain after measurement can be further reduced, and the grain is being supplied. Inaccurate measurement values such as obtaining the moisture content of the grains when there is not, can be eliminated, thereby improving measurement accuracy.

  As the grain supply detection device, for example, an impact sensor disposed in the grain tank so that the grains supplied to the grain tank can collide, a scraping sensor disposed in a cutting part provided in the combine, Examples thereof include a waste sensor disposed in a waste treatment unit provided in the combine. For example, in the case of using the biting sensor or the excretion sensor as the grain supply detection device, the biting sensor or the excretion sensor is disposed in the cutting unit or the excretion processing unit, respectively. Therefore, in consideration of the time required for the grain to reach the moisture sensor after the biting sensor or the excretion sensor senses, the biting sensor or the excretion sensor senses the operation time of the moisture sensor. It is preferable to delay the time by the required time.

The Glen tank is provided with a grain inlet for moisture sensor for feeding grain into the moisture sensor from the outside, and a grain inlet lid for moisture sensor for opening and closing the inlet, and the control device includes the controller In addition to the normal mode for measuring the moisture content of the harvested grain, it can be configured to have a manual mode for measuring the moisture content of the grain supplied from the outside through the grain inlet for the moisture sensor. .

  As described above, according to the present invention, the amount of mixed grains after measurement after the moisture content is measured by the moisture sensor among the grains obtained in the harvesting operation can be reduced, and the moisture content is measured. In this case, it is possible to provide a combine that can reduce the generation of post-measurement grain that is crushed by the moisture sensor as much as possible.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 4 are a left side view, a plan view, a right side view, and a front view, respectively, of a combine that is an embodiment of the present invention. 5 is a right side view of the grain tank 13 and the discharge auger 15 in the combine 201 shown in FIGS.

  First, the overall configuration of the combine 201 will be described with reference to FIGS. In the combine 201, the machine body frame 2 is placed on the crawler type traveling device 1, and the raising / cutting unit 3 is disposed in front of the machine frame 2 so as to be movable up and down. In the raising / cutting unit 3, The grain straw is weeded by the weed board 4 projecting forward, and is caused by the tine 6 projecting from the raising case 5 erected at the rear of the weed board 4, and the raising case 5 The cutting blade 7 disposed on the rear side is trimmed from the stockholder side.

  A threshing section 12 including a handling cylinder and a processing cylinder is arranged behind the raising / cutting section 3, and a cereal carrying device 8 is disposed between the raising / cutting section 3 and the threshing section 12. Yes. Further, a feed chain 9 extends rearward from the threshing portion 12 behind the conveying device 8. The cereals harvested by the pulling / reaping unit 3 are inherited from the conveying device to the feed chain 9, and the stock chain side is conveyed backward by the feed chain 9. Thereby, the tip side of the cereal is conveyed into the threshing unit 12, and the threshing of the cereal is performed in the threshing unit 12.

  A waste chain 18 is disposed at the rear end of the feed chain 9, and a waste processing unit 19 including a waste cutter device, a diffusion conveyor, and the like is disposed below the rear portion of the waste chain 18. After the threshing portion 12 threshed, the cereal mash (waste) is transported from the feed chain 9 to the shed chain 18 and released to the field as it is, or cut into pieces by the mashing processing portion 19. It is released while being diffused later.

  In addition, a sorting unit 17 is disposed below the threshing unit 12, and the sorting unit 17 sorts the grain from grains, swarf and the like flowing down from the threshing unit 12. Of the grains and swarf, the sorted grain is a grain tank 13 disposed on the machine body frame 2 and is conveyed to the grain tank 13 supported by the machine body frame 2, and sawdust. Etc. are discharged outside the machine.

  The grain tank 13 is disposed on the side of the threshing unit 12, and a cab 14 is disposed in front of the grain tank 13, while a grain discharging device 15 is disposed behind and above the grain tank 13. ing. The grain discharge device 15 includes a vertical discharge auger 15 a and a horizontal discharge auger 15 b, and the vertical discharge auger 15 a is erected on the machine frame 2 behind the grain tank 13. The Glen tank 13 is configured to be pivotable laterally about the vertical discharge auger 15a, and the horizontal discharge auger 15b is configured to be pivotable in the vertical direction by a pivot fulcrum provided on the rear portion thereof. Has been.

  A screw-type discharge conveyor 16 is disposed in the front-rear direction at the inner lower portion of the grain tank 13, and one end of the discharge conveyor 16 is connected to the grain discharge device 15. Thus, after being conveyed from the grain tank 13 to the grain discharging device 15 by the grain discharging conveyor 16 in the grain tank 13, it is discharged to the outside from the front end portion of the horizontal discharging auger 15b through the vertical discharging auger 15a. .

  In the grain discharging device 15, the base side of the horizontal discharging auger 15b is pivotally attached to the upper end of the vertical discharging auger 15a so as to be vertically rotatable. An auger elevating cylinder 130, which is an elevating actuator in the combine 201, is configured to be expanded and contracted by switching of a hydraulic control valve, and is pivotally attached to a bracket 131 having one end projecting from the side surface of the vertical discharge auger 15a. The other end is pivotally attached to a bracket 132 projecting from the side surface of the lateral discharge auger 15b. Thus, by extending and retracting the auger elevating cylinder 130, the horizontal discharge auger 15b is rotated in the vertical direction. The auger elevating cylinder 130, which is an elevating actuator in the combine 201, is a hydraulic cylinder, but may be other electric or hydraulic motors and is not limited.

  A gear 133a is fitted and fixed in the middle of the vertical discharge auger 15a, and a gear 133b fitted on a rotation shaft 134a of an auger turning motor 134 as a turning actuator is meshed with the gear 133a. Thus, by operating the auger turning motor 134, the vertical discharge auger 15a and the horizontal discharge auger 15b are integrally turned. The auger turning motor 134, which is a turning actuator in the combine 201, is an electric motor, but may be a hydraulic motor or other hydraulic cylinder, and is not limited.

  In this combine 201, the front part of the grain tank 13 (the opposite side to the vertical discharge auger 15a, which is a pivotal fulcrum) is moved forward and downward, even if the grain tank 13 pivots to the side and moves away from the rail on the machine body frame 2. When the Glen tank 13 is returned to the original position without being inclined, it is configured not to rotate while lifting the front part.

With further described, the vertical discharge auger 15a of the upper and the rear portion of the grain tank 13, allowing portion 59 (see FIG. 6) and rotate during grain tank fixing mechanism 60 is provided which will be described later, the outer surface lower portion of the grayed Rentanku 13 Is provided with an operation unit 70 for operating the rotating Glen tank fixing mechanism 60, and the rotating Glen tank fixing mechanism 60 and the operating unit 70 are connected to each other by a connecting member such as a wire. In this way, when the Glen tank 13 is rotated to the side for maintenance or the like, the allowance of the allowance portion 59 is removed and the Glen tank 13 is fixed to the vertical discharge auger 15a.

  That is, the rotating Glen tank fixing mechanism 60 is disposed at the upper part of the gear 133a. As shown in FIG. 6, a guide plate 61 having a substantially U shape in plan view is disposed in the horizontal direction and opened. The side end is bent outward in the left-right direction and is fixed to the rear surface of the glen tank 13 as an attachment portion. The notch of the guide plate 61 is formed so as to match the outer shape of the vertical discharge auger 15a, and a substantially M-shaped receiving body 62 straddles both inner surfaces on the open side of the guide plate 61. It is fixed. The left and right central portions of the receiver 62 are also curved in accordance with the outer shape of the vertical discharge auger 15a, and the vertical discharge auger 15a is formed in a space formed between the receiver 62 and the back of the guide plate 61. Further, a fastening band 63 for fixing is disposed between the inner back portion of the guide plate 61 and the vertical discharge auger 15a.

  In the space between the tightening band 63 and the receiving body 62, the Glen tank 13 is configured to be swingable about the combine width direction axis with respect to the vertical discharge auger 15a. That is, gaps are formed between the fastening band 63 and the vertical discharge auger 15a and between the receiving body 62 and the vertical discharge auger 15a to form the permissible portion 59. The allowance unit 59 allows the Glen tank 13 to swing around the combine width direction axis, and when detecting the weight of the grain in the Glen tank 13 by a weight sensor 32 (see FIGS. 5 and 12) described later, The Glen tank 13 can swing around the axis at least between an empty state and a full state. When the Glen tank 13 and the vertical carry-out auger 15a are integrally rotated, the allowance of the allowance portion 59 that becomes a gap is eliminated by pulling and tightening the tightening band 63 toward the receiving body 62 side. Thereby, the Glen tank 13 and the vertical discharge auger 15a can be fixed.

  The fastening band 63 has a predetermined width in the vertical direction and is longer than approximately half of the outer periphery of the vertical discharge auger 15a, and is formed of an elastic plate. One end of the fastening band 63 is formed on the guide plate 61. It is pivotally connected to a pivot shaft 65 provided on one of the left and right sides, and a pin 66 protrudes outward from the other end, and one end of a wire 64 serving as a connecting member is fixed to the pin 66. Further, a pin 67 protrudes in the vicinity of the pin 66, one end of a spring 68 is locked to the pin 67, and the other end of the spring 68 extends in a direction opposite to the wire 64, so that the guide plate 61 Locked in place. In this way, when the tightening band 63 is biased in the direction away from the vertical discharge auger 15a by the biasing force of the spring 68, that is, in the loosening direction, the clearance between the allowance portions 59 is increased, and the grain overlap is measured. The superposition can be accurately measured so that the tightening band 63 does not contact the vertical discharge auger 15a.

  A wire receiver 69 is disposed in the vicinity of the bin 66 connecting the wire 64, and the wire receiver 69 is integrally provided on the outer surface of the open end of the guide plate 61, and supports one end of the outer. It is guided so that the pulling direction by the wire 64 is substantially tangential to the outer periphery of the vertical discharge auger 15a. On the other hand, the other end of the wire 64 is extended to an operation unit 70 disposed on the lower side of the front portion of the Glen tank 13.

  As shown in FIG. 5, the operation unit 70 includes a Glen tank fixing lever 71 and a lock lever 72 that locks the Glen tank fixing lever 71 in a tightening position. In the operation unit 70, the wire 64 is pulled forward by rotating the Glen tank fixing lever 71 outward, and one end of the fastening band 63 connected to the other end of the wire 64 is pulled. The glen tank 13 is fastened and fixed to the vertical discharge auger 15a by pulling the outer periphery of the vertical discharge auger 15a forward and bringing it into contact with the receiving body 62, thereby eliminating the allowable portion of the allowable portion 59. In order to maintain the tightened state, the hook portion 72 b of the lock lever 72 is engaged with the release lever 71. Thereby, when the Glen tank 13 rotates to the side, the vertical discharge auger 15a and the Glen tank 13 are integrated, and the vertical discharge auger 15a can support the Glen tank 13.

  As shown in FIGS. 1 to 4, a discharge case 136 is provided at the tip of the horizontal discharge auger 15b. In the discharge case 136, a bearing portion made up of a ball bearing or the like is formed to pivotally support a lateral feed conveyor (not shown). The lower surface of the discharge case 136 is opened, and a cylindrical sleeve 137 is attached along the edge of the opening. The sleeve 137 is made of a flexible resin or the like, and the lower end of the sleeve 137 is a grain outlet 138. Thereby, the grain dropped from the lower surface of the discharge case 136 can be concentrated and discharged in the vicinity immediately below the grain discharge port 138 without being scattered around.

  FIG. 7 is a left side view showing a schematic configuration of the Glen tank 13 in the combine 201 shown in FIGS. 1 to 4. As shown in FIG. 7, the grain tank 13 has a grain supply port 13 a formed therein, and a milled cylinder 80 is interposed between the grain supply port 13 a and the above-described sorting unit 17. As indicated by the arrows, the fine grains sorted in the sorting unit 17 through the whipped cylinder 80 during the harvesting operation are supplied from the grain supply port 13a into the Glen tank 13 and stored.

  Further, the Glen tank 13 is provided with a moisture sensor mounting opening 13b on the upper left side so that a moisture sensor 35 described later can be mounted. After the moisture sensor 35 is mounted in the opening 13b, the opening is opened. 13b is closed by attaching the closing plate 13c with screws.

  FIG. 8 shows a schematic enlarged view in which the moisture sensor 35 portion of the Glen tank 13 shown in FIG. 7 is enlarged. In addition, in FIG. 8, the state which removed the obstruction board 13c is shown. The moisture sensor 35 measures the moisture content of the grain during the harvesting operation. As shown in FIG. 8, the moisture sensor 35 can measure the moisture content of the grain supplied to the grain tank 13. It is arranged in the inside.

  More specifically, the moisture sensor 35 is disposed in the Glen tank 13 in the vicinity of the grain supply port 13a. The moisture sensor 35 includes a pair of electrode rollers 351 facing each other, and a part of the grains supplied from the grain supply port 13a flows into the pair of electrode rollers 351 between the rollers 351. (See the arrows in the figure). That is, the Glen tank 13 here is a ceiling plate 13 ′ of the Glen tank 13 as a part of the grain supplied from the whipping cylinder 80 via the grain supply port 13a is indicated by an arrow in the figure. The direction of the grain is deflected toward the moisture sensor 35 by colliding with a guide plate 13h (see also FIG. 9 and FIG. 10 to be described later) suspended so as to extend downward, so that the deflected grain Is guided to the moisture sensor 35.

In this way, the moisture sensor 35 disposed in the Glen tank 13 can crush the grain flowing from the grain supply port 13a and measure the moisture content of the grain. More specifically, grains having flowed a pair of electrode roller 35 1 from grain supply port 13a is rotated so as to enter between the rollers, while crushing the grain between the electrode roller 351 to the rotating ( In other words, the electric resistance value of the crushed grain is detected between the electrode rollers 351 while being crushed, and the detected electric resistance value is output as a signal (information) relating to the moisture content of the grain. And is electrically connected to a control device 100 (see FIG. 12) described later. Thereby, the signal (information) regarding the grain moisture detected by the moisture sensor 35 can be transmitted to the control device 100.

  In addition, the grain tank 13 is provided with a moisture sensor grain inlet 13d for feeding grains into the moisture sensor 35 from outside when the harvesting operation is not being performed, and a moisture sensor for opening and closing the inlet 13d. The grain input lid 13e, the outlet 13f for discharging the measured grain after the moisture content is measured by the moisture sensor 35, and the measured grain after the outlet through the outlet 13f. And a guide member 13g for guiding to the center.

  FIG. 9 is a schematic cross-sectional view of the moisture sensor 35 portion of the Glen tank 13 as viewed from above, and FIG. 10 is a schematic rear view showing the moisture sensor 35 portion of the Glen tank 13. As shown in FIGS. 8 to 10, the grain inlet 13 d is provided at a position facing the side on which the grain of the pair of electrode rollers 351 in the moisture sensor 35 is put in the ceiling plate 13 ′ of the Glen tank 13. It has been. The grain input lid 13e is swingably provided outside the ceiling plate 13 'with a hinge 13e' provided near the grain input port 13d as a fulcrum. Thereby, the inlet 13d can be opened and closed by the inlet lid 13e. In FIG. 10, a chain line indicates a state where the closing lid 13e is open.

  With this configuration, in the moisture manual measurement mode, which will be described later, the grain is put into the moisture sensor 35 from the outside through the grain slot 13d with the loading lid 13e opened when the harvesting operation is not performed. In this case, the position of the grain inlet 13d is at the ceiling position of the Glen tank, and it is difficult to throw the grain. Therefore, the combine 201 is preferably provided with a ladder 400 and an auxiliary step 500 as shown in FIG. The ladder 400 and the auxiliary step 500 can be used when an operator puts the grain into the moisture sensor 35 through the insertion port 13d. 2 and 4, the ladder 400 and the auxiliary step 500 are not shown.

  As shown in FIG. 3, the ladder 400 includes a pair of front and rear support columns 401 and 402 extending in the vertical direction, and a plurality of ladders (six in this example) that are horizontally spaced between the support column pieces 401 and 402. Step piece 403, and a connecting / fixing body 404 that connects / fixes the middle part of the column pieces 401, 402 and the right side wall of the Glen tank 13, and is connected to the upper end portions 405, 406. With the pivot pin (not shown) along the front and rear direction of the combine as a fulcrum, the storage position where the lower end portions 407 and 408 are close to the right side wall of the Glen tank 13 and the upper end portions 405 and 406 are connected. The position can be changed between the use position separated from the right side wall of the glen tank 13 with the pivot pin as a fulcrum.

  Further, the auxiliary step 500 includes a pair of front and rear arm pieces 501 and 502 extending in the left-right direction, and between the distal end portion (outside portion), midway portion, and proximal end portion (inner side portion) of both arm pieces 501 and 502. The first to third step forming pieces 503, 504, and 505 extending in the front-rear direction are interposed, and are pivotally supported and fixed along the front-rear direction of the combine provided on the third step forming piece 505 side. With the pin (not shown) as a fulcrum, the tip of the auxiliary step 400 is flipped upward and the storage position along the right side wall of the Glen tank 13 and the tip of the auxiliary step 400 project outward. The position can be freely changed between the projecting position and the use position that is substantially horizontal.

  8 again, the discharge port 13f is provided below the position where the moisture sensor 35 on the left side surface of the Glen tank 13 is mounted. The guide member 13g includes a cylindrical member 131g and a receiving member 132g. In FIG. 10, the receiving member 132g is not shown.

  In this example, the cylindrical member 131g is a flexible pipe, and one end 131g ′ has a side opposite to the side where the grain of the pair of electrode rollers 351 in the moisture sensor 35 is input (that is, the grain after measurement is The other end 131g "is directed to the outside of the machine through the discharge port 13f. Thereby, the post-measurement grain after the moisture amount is measured by the moisture sensor 35 The receiving member 132g is a hopper in this example, and the inlet portion 132g ′ receives the other end 131g ″ of the pipe 131g and the outlet portion 132g ″ faces downward. The hopper 132g introduces the post-measurement grain guided by the pipe 131g into the inlet portion 132g ′, and the outlet portion 13 is supported by the support member 133g so as to face. It can be discharged in the field from the g ". In this example, the post-measurement grain is guided to the outside of the machine by the guide member 13g through the discharge port 13f, but the post-measurement grain is stored in the Glen tank 13, A switching means for selectively switching between the discharge operation for discharging to the outside of the machine is provided in the middle portion of the guide member 13g on the grain tank 13 side or between the guide member 13g and the moisture sensor 35, and the switching means and the storage operation and You may comprise so that discharge operation | movement can be switched.

  In addition to the moisture sensor 35, the combine 201 further includes the weight sensor 32, the augerest sensor 54, the grain supply detection device 21, the lid open / close detection device 22, and the hopper presence / absence detection device 23.

  The weight sensor 32 is of a load cell type that detects the load from the Glen tank 13, and as shown in FIG. 5, is disposed below the front of the Glen tank 13 and on the body frame 2, and the control device 100 is electrically connected. Thereby, the signal (information) regarding the grain weight detected by the weight sensor 32 can be transmitted to the control device 100. As described above, when the weight tank 32 detects the weight of the grains in the grain tank 13 by the allowance unit 59, the grain tank 13 is at least filled from an empty state. Since the weight sensor 32 can measure the grain weight in the glen tank 13, the vertical discharge auger 15b is hardly involved in the weight measurement. The grain weight can be measured.

  Moreover, the combine 201 has the auger rest 52 which accommodates the horizontal discharge auger 15b in an accommodation position, as shown in FIG.1, FIG2 and FIG.4. The augerest 52 is a member that supports the horizontal discharge auger 15b of the grain discharge device 15 when the grain discharge device 15 is not used, and is configured in a substantially Y shape. The augerest sensor 54 for detecting the lateral discharge auger 15b is arranged. This sensor 54 is electrically connected to the control device 100. Thereby, a signal (information) as to whether or not the lateral discharge auger 15 b is placed on the placement portion of the auger rest 52 detected by the sensor 54 can be transmitted to the control device 100.

  The grain supply detection device 21 detects whether or not the grain is supplied to the grain tank 13, and in this example, whether or not the grain supplied to the grain tank 13 is colliding. As shown in FIG. 9, it is an impact sensor to detect, and is arranged at a position where the grain of the guide plate 13h provided in the Glen tank 13 should collide so that the grain supplied to the Glen tank 13 can collide. It is installed. The impact sensor 21 is electrically connected to the control device 100. Thereby, the signal (information) whether the grain supplied to the Glen tank 13 detected by the impact sensor 21 is supplied can be transmitted to the control device 100. In addition, it replaces with an impact sensor as the grain supply detection apparatus 21, It is arrange | positioned in the cutting part 3, and it is sent by the bite chain (illustration omitted) whether the grain straw is harvested by this cutting part 3, for example. A biting sensor 33 (see FIG. 1) for detecting the cereals that are squeezed out, or disposed in the waste disposal processing unit 19, whether or not waste is discharged by the waste disposal processing unit 19, for example, a waste chain A waste sensor 34 (see FIG. 1) that detects the waste sent at 18 may be used.

  The lid opening / closing detection device 22 detects opening / closing of the closing lid 13e, and in this example, is a closing lid detection switch that is turned on when the closing lid 13e is closed and turned off when it is opened. As shown in FIG. 9, the detection switch 22 is disposed at a position that is turned OFF / ON when the closing lid 13 e of the Glen tank 13 is opened and closed, and is electrically connected to the control device 100. Thereby, the opening / closing signal (information) of the closing lid 13e detected by the detection switch 22 can be transmitted to the control device 100.

  Here, the grain tank 13 can use the grain guide hopper 50 as a hopper member that inputs grains into the moisture sensor 35 from outside when the harvesting operation is not being performed. The grain guide hopper 50 is detachably disposed on the grain tank 13 so as to guide the grain to the moisture sensor 35 when the grain is put into the moisture sensor 35 from the outside. FIG. 10 shows a state in which the grain guide hopper 50 is disposed in the glen tank 13 when the grain is put into the moisture sensor 35 from the outside. The grain guide hopper 50 is removed from the glen tank 13 after the grain is put into the moisture sensor 35. The hopper presence / absence detection device 23 detects whether or not the grain guide hopper 50 is disposed in the grain tank 13. In this example, the hopper presence / absence detection device 23 is turned on and removed when the grain guide hopper 50 is disposed. This is a hopper detection switch that is turned OFF when it is in operation. As shown in FIG. 10, the detection switch 23 is disposed at a position where the grain guide hopper 50 is turned on / off when the grain guide hopper 50 is attached to or detached from the grain tank 13, and is electrically connected to the control device 100. Thereby, the presence / absence signal (information) of the grain guide hopper 50 detected by the detection switch 23 can be transmitted to the control device 100.

  FIG. 11 is a view of the driving operation unit in the cab 14 as seen from above. As shown in FIG. 11, a display device 24 is provided at the center of the steering handle 31 of the front column 30, a first setting switch 25 is provided on the upper left side of the display device 24, and a display changeover switch is provided on the lower left side. 26, a second setting switch 28 is provided on the upper right side of the display device 24, a buzzer stop switch 29 is provided on the lower left side, and harvest information is provided on the left side of the back of the driver's seat 14a. A switch 27 is provided, both of which are electrically connected to the control device 100. Thereby, the input signals (information) of the first and second setting switches 25 and 28, the display changeover switch 26, the buzzer stop switch 29, and the harvest information switch 27 can be sent to the control device 100. Output information can be transmitted to the display device 24 and the printing device 39.

  Next, the configuration of the control system of the combine 201 according to the present embodiment will be described with reference to FIG.

  FIG. 12 is a block diagram showing a schematic configuration of a control system of the combine 201 according to the present embodiment. As shown in FIG. 12, the combine 201 is composed of the moisture sensor 35, the weight sensor 32, the augerest sensor 54, the impact sensor 21, the closing lid detection switch 22, the hopper detection switch 23, and various switches 25 to 29 described above. A control apparatus 100 that controls these devices is provided. The control device 100 includes a central processing unit 101 (hereinafter referred to as a CPU) including control arithmetic means for executing arithmetic processing based on signals input from various sensors, switches, and the like, a control program for controlling the entire combine 201, and the like. And a ROM 102 that stores predetermined data relating to arithmetic expressions and LUTs (look-up tables) to be described later, and a RAM 103 that temporarily holds data generated during the operation of the CPU 101. The CPU 101 is configured to load and execute a control program stored in the ROM 102 into the RAM 103 as necessary to operate the combine 201. The CPU 101 has a built-in clock timer.

  The control program functions as a means including CPU 101 including grain weight measuring means P1, grain moisture content measuring means P2, harvest information totaling means P3, moisture sensor operation control means P4, harvest information printing means P5, and alarm display means P6. It is something to be made.

  The grain weight measuring means P <b> 1 measures the grain weight value based on the information regarding the grain weight sent from the weight sensor 32. Specifically, the grain weight value is converted from the information on the grain weight from the weight sensor 32 using a predetermined grain weight conversion formula or LUT.

  In the grain moisture content measuring means P2, the grain moisture content is measured based on the information regarding the grain moisture content sent from the moisture sensor 35. Specifically, it is converted into the grain moisture amount from the information on the grain moisture amount from the moisture sensor 35 using a predetermined grain moisture amount conversion formula or LUT.

  By the way, since the moisture content of the cereal when the cereal is shipped is determined for each kind and variety of the cereal, the weight of the cereal measured at the time of harvesting is determined from the grain moisture at the time of harvest to the grain moisture at the time of shipment. It is preferable that the weight is converted to. Therefore, in this combine 201, the relationship between the grain weight information from the weight sensor 32 used in the means P1 and the grain weight value is set in advance for each kind and / or each kind of harvested grain (crop). Can do. Moreover, the relationship between the electrical resistance value of the grain output from the weight sensor 32 and the grain water content varies depending on the type and variety of the grain. Therefore, in this combine 201, the relationship between the information on the grain moisture amount from the moisture sensor 35 used in the means P2 and the grain moisture amount is set in advance for each type and / or variety of the harvested grain (crop). can do. Examples of the types of grains to be harvested include “rice”, “wheat”, “barley” and the like. Examples of varieties of grains to be harvested include “Koshihikari”, “Akitakomachi”, “Agriculture 61” and the like.

  More specifically, as shown in FIG. 13, the calculation formula for the grain weight conversion and the calibration curve of the LUT (see FIG. 13A) and the calculation formula for the grain moisture conversion and the LUT have. A calibration curve (see FIG. 13B) is preset in the ROM 102 for each type and variety of crop to be harvested. Then, from among the respective arithmetic expressions and LUTs, for example, the type and variety of the crop are input on a predetermined crop selection screen (not shown) displayed on the display device 24, or the crop registered in the ROM 102 in advance. The types and varieties are displayed, and by selecting the displayed crop type and cultivar, an arithmetic expression or LUT having a calibration curve corresponding to the input or selected crop type and cultivar is selected. It has become.

  Further, the grain weight measuring means P1 measures the harvest mass every time it travels a predetermined unit area preset in the ROM 102 during the harvesting operation. Note that the difference between the measured harvested mass and the previously measured harvested mass is used as a predetermined section yield per unit area, and the section yield and the measured harvested mass are stored in the RAM 103 as needed for each section.

  Further, the grain moisture content measuring means P2 determines the moisture sensor 35 at the predetermined period (when the grain moisture content is obtained every predetermined period (for example, 60 seconds) preset in the ROM 102 during the harvesting operation). For example, 60 seconds) is operated for a shorter time (for example, 10 seconds), and the moisture content of the grain during the predetermined period is obtained based on the measured value within the operation time of the moisture sensor 35. In addition, this grain moisture content is memorize | stored at any time in RAM103 for every predetermined period.

  In addition, the grain moisture content measuring means P2 includes a normal mode (normal moisture measurement mode) for measuring the moisture content of the grain in the cereal harvested by the cutting unit 3 during the harvesting operation, and the normal moisture measurement mode. In addition, when the harvesting operation is not being performed, the input lid 13e is opened and the moisture content of the grains supplied from the outside through the input port 13d into which the image guide hopper 50 is inserted is measured through the image guide hopper 50. It has a manual mode (water manual measurement mode).

  The harvest information totaling means P3 is a means for totalizing grain harvest information, and includes a grain weight totaling means P31 and a grain moisture content totaling means P32.

  In the grain weight totaling means P31, after the harvesting work in one field is finished, each section yield measured during the work in the means P1 is read from the RAM 103, and the size of the yield for each section is displayed for each read section yield. Create a histogram.

  In the grain water content totalizing means P32, the grain moisture content measured during the operation in the means P2 after the harvesting work in one field is read from the RAM 103, and the read grain moisture content is obtained. A histogram is created by counting the frequency distribution for each predetermined moisture content range (for example, every 0.5% between 15% and 30% moisture content).

  In the moisture sensor operation control means P4, (a) the operation control for operating the moisture sensor 35 only when it is determined that the grain is supplied based on the detection result of the impact sensor 21, and (b) the closing lid detection switch 22 When it is determined that the closing lid 13e is open prior to the operation of the moisture sensor 35 based on the detection result of the above, the operation control for prohibiting the operation of the moisture sensor 35, and (c) the detection result of the closing lid detection switch 22 When it is determined that the charging lid 13e is open during the operation of the moisture sensor 35, the operation control for stopping the operation of the moisture sensor 35 is performed.

  The harvest information printing means P5 prints out the histogram created by the means P31 or the histogram created by the means P32 to the printing device 39 (see FIG. 12) connected to the control device 100.

  In the alarm display means P6, (a) when it is determined that the closing lid is open based on the detection result of the closing lid opening / closing detection switch 22, and (b) the grain guide hopper 50 is based on the detection result of the hopper detection switch 23. When it is determined that the fuel tank is disposed in the Glen tank 13, an alarm is displayed. The contents of the alarm display are stored in advance in the ROM 102.

  In the control device 100 described above, the control program is executed when the combine 201 is operated, and the CPU 101 functions as the units P1 to P6.

  Next, regarding the operation of the combine 201, (1) when measuring grain weight, (2) when measuring grain moisture content, (3) when printing out harvest information after harvesting work in one field, ( 4) The case where the moisture manual measurement mode for measuring the moisture content of the grain supplied from the outside when the harvesting operation is not performed is executed, and (5) the case where the alarm display is performed.

(1) Measurement of grain weight During the harvesting operation, the horizontal discharge auger 15 b is placed on the placement portion of the auger rest 52. At this time, it is detected by the augerrest sensor 54 that the lateral discharge auger 15b is placed on the placement portion of the augerest 52. In this state, when the harvest information switch 27 is pressed and the switch 27 is in the ON state, the weight sensor 32 detects information relating to the grain weight, and the information is sent to the control device 100 and also to the moisture sensor 35. Then, information on the grain moisture is sent to the control device 100.

  In the means P1, first, a crop type and variety are input on a predetermined crop selection screen (not shown) displayed on the display device 24, or a crop type (for example, rice) registered in the ROM 102 in advance. , Wheat, barley, etc.) and varieties (for example, Koshihikari, Akitakomachi, Agricultural Forest No. 61, etc.) are displayed, and when a desired type and variety are selected from the displayed crop types and varieties, the input Alternatively, a grain weight conversion formula or LUT having a calibration curve (see FIG. 13A) corresponding to the type and variety of the selected crop is selected. Next, the grain weight is measured by converting the grain weight information sent from the weight sensor 32 into a grain weight value using the selected grain weight conversion formula or LUT. During this harvesting operation, the harvest mass is measured every time the vehicle travels in a predetermined unit area set in advance.

  FIG. 14 is a flowchart showing a flow of processing when measuring harvested mass every time the vehicle travels a predetermined unit area. As shown in FIG. 14, after the harvesting operation is started (step S1), the grain weight (mass) M1 in the grain tank 13 is measured (step S2), and the cutting clutch (not shown) of the cutting unit 3 is included. When “ON” (step S4), the running speed Svx is integrated every predetermined time t (Sv = Sv + Svx) (step S5), and the integrated integrated speed Sv is multiplied by the predetermined time t and the cutting width w. When the cutting area (Sv × t × w) reaches a predetermined unit area S preset in the ROM 102 (step S6), the accumulated speed Sv is reset (step S7), and the grain in the grain tank 13 Mass Mi (i is 2 to n (n is an integer of 2 or more)) is measured (step S8), and the difference between the measured grain mass Mi and the previously measured grain mass Mi-1 is defined as a unit per unit area S. Yield As the amount Yi-1, this section yield Yi-1 and the measured grain mass Mi are stored in the RAM 103 as needed for each section (step S9). This series of processes is repeated (step S3 to step S9), and when the harvesting operation is completed (step S3), the section yields Y1 to Yn-1 are obtained.

(2) Measurement of grain moisture content In the normal moisture measurement mode of the means P2 during the harvesting operation, first, the type and variety of the crop are input on a predetermined crop selection screen (not shown) displayed on the display device 24. Or the type of crop (for example, rice, wheat, barley, etc.) and the variety (for example, Koshihikari, Akitakomachi, Norin 61) etc. that are registered in advance in ROM 102 are displayed. When desired types and varieties are selected from among the types and varieties of crops, the moisture content is converted into a grain moisture amount having a calibration curve (see FIG. 13B) corresponding to the input or selected crop type and varieties. An arithmetic expression or LUT is selected. Next, from the information on the grain moisture amount sent from the moisture sensor 35, the grain moisture amount is converted into the grain moisture amount using the selected grain moisture amount conversion arithmetic expression or LUT. Is measured. During the harvesting operation, when the moisture content of the grain is determined every predetermined period (for example, 60 seconds) set in advance, the moisture sensor 35 is shorter than the predetermined period (for example, 60 seconds) (for example, 10 seconds), and the moisture content of the grain during the predetermined period is determined based on the measured value within the operation time of the moisture sensor 35. At this time, the grain water content is stored in the RAM 103 at every predetermined period.

  FIG. 15 is a diagram showing the operation time of the moisture sensor 35 when measuring the moisture content of the grain for each predetermined cycle. As shown in FIG. 15, the moisture sensor 35 is operated for y seconds (10 seconds) at a predetermined x second (for example, 60 seconds) cycle during the harvesting operation. However, the moisture sensor 35 is operated only when the means P4 determines that the grain is supplied based on the detection result of the impact sensor 21. In other words, if it is determined that the grain is not supplied based on the detection result of the impact sensor 21, the moisture sensor 35 is operated until it is determined that the grain is supplied next. (Refer to the broken line in the figure). Further, when the impact sensor 21 is “OFF” during the operation of the moisture sensor 35, the measured value is ignored and the operation of the moisture sensor 35 is stopped, and then the impact sensor 21 is turned “ON”. The moisture sensor 35 is activated.

  When the scraping sensor 33 of the cutting unit 3 or the scraping sensor 34 of the rejecting processing unit 19 is used instead of the impact sensor 21, the scraping sensor 33 or the rejecting sensor 34 senses as shown in FIG. In consideration of the time delay (t ′ seconds) required for the grain to reach the moisture sensor 35 after that, the operation time of the moisture sensor 35 is from the time when the biting sensor 33 or the waste sensor 34 is “ON”. What is necessary is to delay by t ′ seconds.

(3) Print output of harvest information after harvesting operation in one farm field After the harvesting operation in one farm field is completed, when the histogram printing of each section yield is selected on the printing screen (not shown) of the display device 24, means P31 In FIG. 17, each section yield measured during the operation by means P1 is read from the RAM 103, and each section yield (1 to 50 in the illustrated example) is read out as shown in FIG. A histogram representing the magnitude of the yield for the section) is created, and the histogram created by the means P31 is printed out by the printing device 39 in the means P5.

  When the histogram printing of each moisture content is selected on the print screen (not shown) of the display device 24, the grain for each moisture content measurement cycle measured during the operation in the moisture normal measurement mode of the means P2 in the means P32. The moisture content is read from the RAM 103, and the average value, maximum value, minimum value, standard deviation, and number of measurement points are obtained for the read grain moisture content, and for each predetermined moisture content range (for example, moisture content) The frequency distribution of 15% to 30% (every 0.5%) is tabulated to create a histogram. In the means P5, as shown in FIG. Printed out by the printing device 39.

(4) Execution of Moisture Manual Measurement Mode In the moisture manual measurement mode of the means P2, as described above, when the harvesting operation is not being performed, the input lid 13e is opened and the input port 13d into which the grain guide hopper 50 is inserted is used. Then, the moisture content of the grain supplied from the outside through the grain guide hopper 50 is measured. This will be further described with reference to FIG. FIG. 18 is a diagram illustrating a display screen displayed on the display device 24 when the moisture manual measurement mode is executed.

  When the manual moisture measurement mode is executed, when the second setting switch 28 is pressed while the harvest information switch 27 is OFF, a harvest information menu is displayed as shown on the screen A in FIG. When the second setting switch 28 (return) is pressed on this screen A, the screen is returned to the state before the harvest information menu is displayed. In this harvest information menu screen A, when “manual water measurement” is selected with the first setting switch 25 (↑) and the display changeover switch 26 (↓) and the buzzer stop switch 29 (decision) is pressed, FIG. As shown in the B screen, the crop selection screen is displayed.

  In the crop selection screen B, a crop to be manually measured for water is selected. In this example, every time the display changeover switch 26 (change) is pressed, the displayed crop type sequentially changes in the order of “rice” → “wheat” → “barley” → “rice”.

  After the selection of the moisture manual measurement crop, the buzzer stop switch 29 (determination) is pressed to determine the crop type for which the moisture manual measurement is to be performed. Although the type of crop is selected here, the type of crop may be further selected. When the second setting switch 28 (return) is pressed on this screen B, the screen returns to the harvest information menu screen A.

  When the type and variety of the crop are selected in this way, a grain moisture amount conversion arithmetic expression or LUT having a calibration curve (see FIG. 13B) corresponding thereto is selected, as shown in the C screen in FIG. The moisture sensor 35 can be manually measured. When the second setting switch 28 is pressed on this screen C, the screen returns to the harvest information menu screen A.

  In this manually measurable state, if the means P4 determines that the closing lid 13e is open prior to the operation of the moisture sensor 35 based on the detection result of the closing lid detection switch 22, the operation of the moisture sensor 35 is performed. It is forbidden. For example, if the operator opens the charging lid 13e of the Glen tank 13, the operation of the moisture sensor 35 is prohibited. At this time, when the grain guide hopper 50 is mounted, the grain to be measured is thrown, and the throwing lid 13e is closed, the operation of the moisture sensor 35 is started. For example, the moisture sensor 35 is activated for about 10 seconds. If the means P4 determines that the closing lid 13e is open during the operation of the moisture sensor 35 based on the detection result of the closing lid detection switch 22, the operation of the moisture sensor 35 is stopped. For example, if the operator opens the charging lid 13e during the operation of the moisture sensor 35, the operation of the moisture sensor 35 is stopped, and the measurement is stopped as shown in the screen D in FIG. Here, when the buzzer stop switch 29 (return) is pressed, the normal screen (not shown) is restored.

  On the other hand, when the moisture manual measurement is completed, the operation of the moisture sensor 35 is stopped, and the measurement result is displayed as shown on the E screen in FIG. When the moisture manual measurement is performed in this way, the grain guide hopper 50 mounted by the operator is removed again by the operator, and the grain input lid 13e for the moisture sensor of the glen tank 13 is further closed. The above operation can be easily performed by using the ladder 400 and the auxiliary step 500. When the buzzer stop switch 29 (return) is pressed on this screen E, the screen returns to the harvest information menu screen A.

(5) Alarm Display FIG. 19 is a diagram showing a display screen displayed on the display device 24 when an alarm display during one field harvesting operation is performed.

  In means P6, when it is determined that the closing lid is open based on the detection result of the closing lid open / close detection switch 22, or the grain guide hopper 50 is disposed in the glen tank 13 based on the detection result of the hopper detection switch 23. If it is determined, an alarm display is performed as shown in FIG.

  More specifically, when the moisture sensor cereal input lid 13e is opened during one field harvesting operation, the contents of the alarm display are read from the ROM 102, and a message as shown on the screen A in FIG. 19 is displayed. When the operator forgets to remove the grain guide hopper 50 of the moisture sensor 35, the contents of the alarm display are read from the ROM 102 and a message as shown on the screen B in FIG. 19 is displayed.

  According to the combine 201 demonstrated above, when calculating | requiring the moisture content of the grain for every predetermined period (for example, 60 second), the time (for example, 10 second) for which the moisture sensor 35 is shorter than the said predetermined period (for example, 60 second). ) And the moisture content of the grain during the predetermined period (for example, 60 seconds) is obtained based on the measured value within the actuation time of the moisture sensor 35. When measuring the amount of moisture, the generation of post-measurement grains that are crushed by the moisture sensor 35 can be reduced as much as possible.

  Further, since the moisture sensor 35 is operated only when it is determined that the grain is supplied based on the detection result of the impact sensor 21, the amount of the grain after the measurement is mixed into the harvested grain can be further reduced. At the same time, it is possible to eliminate an inaccurate measurement value such as obtaining the moisture content of the grain when the grain is not supplied, thereby improving the measurement accuracy.

  Also, when measuring the weight and moisture content of the grain, by selecting the type and variety of the crop, the weight and moisture content of the grain can be determined using an arithmetic expression or LUT having a calibration curve accordingly. More accurate measurements can be obtained.

  Moreover, since the histogram showing the size of the yield for each section can be printed out for each section yield after the harvesting operation of one field is completed, it is possible to know the variation in yield for each section. Thus, local management such as soil management and fertilization management can be accurately evaluated.

  Moreover, about the moisture content of the grain measured during the operation | work after completion | finish of the harvesting operation | work of one field, frequency distribution for every predetermined | prescribed moisture content range (For example, every 0.5% between moisture content 15%-30%) Since the histogram can be printed out, it is possible to know the variation in grain moisture in the field.For example, by taking statistics of grain moisture distribution with respect to the weather during the work, the weather during the work Useful for determining whether it is suitable, or for adjusting the drying degree of the dryer from the grain moisture distribution data when drying the grain using a dryer when shipping the grain be able to.

FIG. 1 is a left side view of a combine which is an embodiment of the present invention. FIG. 2 is a plan view of the combine which is an embodiment of the present invention. FIG. 3 is a right side view of the combine which is an embodiment of the present invention. FIG. 4 is a front view of a combine which is an embodiment of the present invention. FIG. 5 is a right side view of the grain tank and the discharge auger in the combine shown in FIGS. 1 to 4. FIG. 6 is a view for explaining the rotating Glen tank fixing mechanism. FIG. 7 is a left side view showing a schematic configuration of the Glen tank in the combine shown in FIGS. 1 to 4. FIG. 8 is a schematic enlarged view in which the moisture sensor portion of the Glen tank shown in FIG. 7 is enlarged. FIG. 9 is a schematic cross-sectional view of the moisture sensor portion of the grain tank in the combine as viewed from above. FIG. 10 is a schematic rear view showing the moisture sensor portion of the Glen tank in the combine. FIG. 11 is a plan view of the driving operation unit in the cab. FIG. 12 is a block diagram showing a schematic configuration of a combine control system according to the present embodiment. FIG. 13 is a diagram showing an example of a calibration curve for measuring grain weight and grain moisture content. FIG. 13A shows an arithmetic expression for grain weight conversion and a calibration curve included in the LUT. B) shows the calculation formula for converting grain moisture and the calibration curve of the LUT. FIG. 14 is a flowchart showing a flow of processing when measuring harvested mass every time the vehicle travels a predetermined unit area. FIG. 15 is a diagram illustrating the operation time of the moisture sensor when measuring the moisture content of the grain for each predetermined period. FIG. 16 shows the operation time of the moisture sensor in the case of using the scraping sensor of the cutting part or the rejecting sensor of the rejection processing unit instead of the impact sensor, from the time when the scraping sensor or the rejection sensor is “ON”. It is a figure which shows the state delayed by 'second. FIG. 17 is a diagram showing the print contents of harvest information after harvesting work in one field. FIG. 17A shows a histogram showing the size of the yield for each section for each section yield. ) Shows a histogram in which the frequency distribution for each predetermined moisture content range is aggregated for the grain moisture content. FIG. 18 is a diagram illustrating a display screen displayed on the display device when the moisture manual measurement mode is executed. FIG. 19 is a diagram showing a display screen displayed on the display device when an alarm display at the time of one field harvesting operation is performed.

3 ... reaping part 12 ... threshing part 13d ... grain input 13e ... grain input lid for moisture sensor
13f ... Discharge port 13g ... Guide member 17 ... Selection unit 21 ... Grain supply detection device 35 ... Moisture sensor 13 ... Glen tank 19 ... Excretion processing unit 33 ... Biting sensor 34 ... Excretion sensor 80 ... Flour cylinder 100 ... Control Apparatus 201 ... Combine 351 ... A pair of electrode rollers

Claims (6)

A combine comprising a moisture sensor for measuring the moisture content of the grain during the harvesting operation, and a control device for controlling the moisture sensor;
The moisture sensor is a harvested grain that has been threshed by the threshing part from the harvested cereal that has been cut by the reaping part, and selected by the sorting part, and is supplied to the grain tank by being conveyed by the milling cylinder. A pair of electrode rollers disposed in the grain tank so that the moisture content of a part of the harvested grain supplied into the grain tank through the mouth can be measured. Detecting the electrical resistance value between the electrode rollers while crushing the part between the pair of electrode rollers, and outputting the detected electrical resistance value as information on the moisture content of the harvested grain,
When determining the moisture content of the grain for each predetermined cycle, the control device operates the moisture sensor only for a time shorter than the predetermined cycle to crush the grain while the electrical resistance value between the pair of electrode rollers And measuring the moisture content of the grain during the predetermined period based on the measured value within the operating time of the moisture sensor ,
The Glen tank is provided with an outlet for discharging the measured grain after being measured by the moisture sensor and measuring the amount of moisture to the outside of the machine, and the measured grain through the outlet. A combine characterized by being provided with a guide member that leads to the outside . The front Symbol grain tank, and grain feed detection device grain to the grain tank to detect whether or not it is supplied are provided,
The said control apparatus is comprised so that the said moisture sensor may be operated only when it is judged that the grain is supplied based on the detection result of the said grain supply detection apparatus. Combine as described in.   The combine according to claim 2, wherein the grain supply detection device is an impact sensor disposed in the grain tank so that the grain supplied to the grain tank can collide.   The combine according to claim 2, wherein the grain supply detection device is a stirring sensor disposed in a cutting unit provided in the combine.   The combine according to claim 2, wherein the grain supply detection device is a waste sensor disposed in a waste treatment unit provided in the combine. The Glen tank is provided with a grain inlet for moisture sensor for putting grain into the moisture sensor from the outside, and a grain inlet lid for moisture sensor for opening and closing the inlet,
In addition to the normal mode for measuring the moisture content of the harvested grain, the control device has a manual mode for measuring the moisture content of the grain supplied from the outside through the grain inlet for the moisture sensor. The combine according to any one of claims 1 to 5, wherein:

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