JP6279965B2 - Combine - Google Patents

Description

  The present invention relates to a combine that measures the amount of discharged grain when discharging stored grain.

  When performing harvesting work in a field, a combine that performs harvesting and threshing of grains and recovery of grains is often used. The combine travels on the field with a crawler, and harvests the culm with a cutting blade during the travel, conveys the harvested culm to the handling cylinder, and threshes. And the chaff and the grain which are arrange | positioned under the barrel are sorted out the koji and the grains separated from the koji, and the selected grains are collected in the grain tank.

  The grain in the grain tank is discharged by a discharge auger. For example, it is discharged to a truck that transports the grain. The quantity of the kernel discharged | emitted is measured by the discharge sensor attached to the discharge port of the discharge auger (for example, patent document 1).

JP 2008-212102 A

  Engine vibration propagates to the discharge auger. The discharge port is located at the tip of the auger and is easily affected by the surrounding environment such as wind. Therefore, the discharge sensor provided at the discharge port is easily affected by disturbance, and there is a possibility that the discharge sensor cannot accurately detect the discharge amount.

  This invention is made | formed in view of such a situation, and it aims at providing the combine which can detect the discharge | emission amount of a grain with sufficient precision.

The combine according to the present invention includes a threshing device for threshing the harvested cereal, a storage unit for storing the threshed grains by the threshing device, and a screw conveyor for discharging the grains stored in the storage unit. A combiner comprising: a timing unit for measuring the rotation time of the screw conveyor; a rotation number detection unit for detecting the rotation number of the screw conveyor; a rotation number detected by the rotation number detection unit; and a timing unit based on the measured rotation time, the the emission calculating unit for calculating the grain emissions from the storage unit, a discharge amount display unit which displays the emissions that are computed by the exhaust output calculation unit, wherein A grain detecting means that is provided at the bottom of the reservoir and detects the presence or absence of a grain, and a recording means that records the presence or absence of a grain detected by the grain detecting means when the screw conveyor is stopped Wherein the emission calculating unit, when the absence of the grain has been recorded in the recording means, after start of rotation of the screw conveyor, wait a predetermined time, to start the calculation of emissions and wherein the Citea Rukoto to.

In the present invention, the discharge amount is calculated based on the rotation speed and rotation time of the screw conveyor, and the calculated discharge amount is displayed.
In addition, when the grain detection means provided at the bottom of the storage unit detects the absence of the grain when the discharge from the storage unit stops, the storage unit is empty and the inside of the discharge auger is also empty. It is thought that. Thereafter, when the rotation of the screw conveyor is started, the grain has moved within the discharge auger and has not yet been discharged from the discharge auger until a predetermined time has elapsed after the rotation has started. In the present invention, when the discharge from the storage unit is stopped and the grain detecting means detects the absence of the grain, the discharge amount is calculated after waiting for a predetermined time after the rotation of the screw conveyor is started. On the other hand, when the grain detection means detects the presence of the grain, it is considered that the inside of the discharge auger is filled with the grain. Therefore, the discharge amount is immediately after the screw conveyor starts rotating without waiting for a predetermined time. Is calculated. Thereby, the calculation start time of discharge | emission amount can be changed with the case where the grain remains in the discharge auger, and the case where it does not remain, and discharge | emission amount can be calculated accurately.

  The combine according to the present invention includes a drive source and a clutch that connects or disconnects the drive source and the screw conveyor, the clutch is connected, and the absence of the grain is detected by the grain detection means. In this case, the clutch is disengaged after waiting for a predetermined time.

  When the clutch is connected and the absence of the grain is detected by the grain detecting means, it is considered that substantially all of the grain stored in the storage unit has been discharged by the rotation of the screw conveyor. In the present invention, in the case described above, the clutch is disengaged after waiting for a predetermined time, so that the screw conveyor automatically stops after all the grains are discharged from the storage section. Therefore, it is possible to prevent the screw conveyor from being idly operated and the discharge amount being erroneously integrated.

  The combine according to the present invention includes an emission amount setting means for setting an emission amount, and when the emission amount calculated by the emission amount calculation unit reaches an emission amount set by the emission amount setting means, And a means for stopping the screw conveyor.

  In the present invention, when the set discharge amount is reached, the automatic stop is performed, so that convenience for the user can be improved.

  In the present invention, the discharge amount is calculated based on the rotation speed and rotation time of the screw conveyor. Therefore, in the calculation of the discharge amount, it is difficult to be affected by the disturbance, and the discharge amount can be obtained with high accuracy. Further, since the discharge amount is displayed, the user can easily recognize the discharge amount.

It is an external appearance perspective view of a combine. It is side surface sectional drawing which outlines the internal structure of a threshing apparatus. It is a longitudinal cross-sectional view which outlines a grain tank. It is a transmission mechanism figure which shows the transmission path of the driving force of an engine schematically. It is a perspective view which briefly shows the inside of the cabin of a combine. It is a schematic diagram which shows a display part. It is a schematic diagram which shows the display part switched to the image which shows the discharge | emission amount of a grain. It is a block diagram which shows the structure of a control part. It is an example of the graph which shows the relationship between the detected value of a spout sensor, and the detected value of a pickup sensor. It is a flowchart explaining the discharge meter display process by a control part. It is a flowchart explaining the on-off memory process of the grain detection sensor by a control part. It is a flowchart explaining the discharge amount calculation process by a control part. It is a flowchart explaining the automatic stop process of the control part which stops discharge | emission of a grain automatically when it reaches | attains target discharge | emission amount. It is a flowchart explaining the automatic stop process of the control part which stops the discharge | emission of a grain automatically when all the grains in a grain tank are discharged | emitted.

  Hereinafter, the present invention will be described with reference to the drawings showing a combine according to an embodiment. FIG. 1 is an external perspective view of a combine.

  In the figure, reference numeral 1 denotes a traveling crawler, and an airframe 9 is provided above the traveling crawler 1. A threshing device 2 is provided on the body 9. On the front side of the threshing device 2, there is provided a cutting unit 3 including a weed plate 3a for discriminating between a harvested corn straw and a non-harvested corn straw, a cutting blade 3b for harvesting the corn straw, and a raising device 3c for causing the corn straw. It is. On the right side of the threshing device 2 is provided a grain tank 4 for storing the grain, and on the left part of the threshing device 2 is provided a long feed chain 5 before and after conveying cereals.

  On the upper side of the feed chain 5, there is provided a clamping member 6 for clamping the cereal cake, and the clamping member 6 and the feed chain 5 face each other. In the vicinity of the front end portion of the feed chain 5, an upper transport device 7 is disposed.

  A cylindrical discharge auger 4 a that discharges the grain from the grain tank 4 is provided on the upper surface of the grain tank 4. The discharge auger 4 a protrudes forward from the upper surface of the grain tank 4. The rear end portion of the discharge auger 4a is connected to the upper surface of the grain tank 4 so as to be rotatable about the vertical axis and movable in the vertical direction. The discharge auger 4a is connected to a hydraulic drive mechanism (not shown). By driving the drive mechanism, the discharge auger 4a turns to the left and right around the vertical axis or moves in the vertical direction.

  In addition, you may comprise the discharge auger 4a so that rotation around the left-right or front-back axis | shaft is possible. Moreover, you may comprise the discharge auger 4a so that a movement in the front-back or the left-right direction is possible.

  On the front side of the grain tank 4, an auger support portion 4s that supports the discharge auger 4a is provided. The auger support portion 4s protrudes upward. An auger detection sensor 4p that detects the presence or absence of the discharge auger 4a is provided at the upper end of the auger support 4s. The auger detection sensor 4p is configured by, for example, a pressure-sensitive sensor, an optical sensor, an ultrasonic sensor, or the like.

  When the discharge auger 4a is placed on the upper end portion of the auger support portion 4s, the auger detection sensor 4p is turned on to detect the presence of the discharge auger 4a. When the discharge auger 4a is placed on the upper end portion of the auger support portion 4s, the auger detection sensor 4p is turned on to detect the presence of the discharge auger 4a. When the discharge auger 4a is not placed on the upper end of the auger support portion 4s, the auger detection sensor 4p is turned off, and the absence of the discharge auger 4a is detected.

  When harvesting the cereal, the discharge auger 4a is placed on the upper end of the auger support 4s, and the auger detection sensor 4p is turned on. When the grain in the grain tank 4 is discharged, the discharge auger 4a moves away from the grain tank 4 and directs its tip in a predetermined direction by driving the drive mechanism. For example, it moves toward a truck that transports grain. The auger detection sensor 4p is turned off. After the movement, the discharge auger 4a discharges the grain.

  A cabin 8 is provided on the front side of the grain tank 4. Work lamps 50 are provided above the cabin 8 and the cutting unit 3.

  The vehicle body 9 travels by driving the travel crawler 1. As the machine body 9 travels, the cereals are taken into the reaper 3 and reaped. The harvested cereals are conveyed to the threshing device 2 via the upper conveying device 7, the feed chain 5 and the clamping member 6, and threshed in the threshing device 2.

  FIG. 2 is a side sectional view schematically showing the internal configuration of the threshing apparatus 2. As shown in FIG. 2, a handling room 10 for threshing cereals is provided at the front upper part of the threshing device 2. A cylindrical handling cylinder 11 whose axial direction is the longitudinal direction is mounted in the handling chamber 10, and the handling cylinder 11 is rotatable about the axis. A large number of teeth 12, 12,... 12 are arranged in a spiral on the peripheral surface of the barrel 11. On the lower side of the handling cylinder 11, a crimp net 15 is disposed for coping with the handling teeth 12, 12,. The said handling cylinder 11 rotates with the driving force of the engine 40 mentioned later, and threshs a cereal.

  Four dust feed valves 10 a, 10 a, 10 a, 10 a are juxtaposed in the front-rear direction on the upper wall of the handling chamber 10, and the dust feed valves control the amount of straw and grains sent to the rear part of the handling chamber 10. Adjust.

  A processing chamber 13 is connected to the rear of the handling chamber 10. A cylindrical processing cylinder 13b whose axial direction is the longitudinal direction is mounted in the processing chamber 13, and the processing cylinder 13b is rotatable around the axis. A large number of teeth 13c, 13c,..., 13c are arranged in a spiral on the peripheral surface of the processing cylinder 13b. A treatment net 13d that disperses the ridges in cooperation with the teeth 13c, 13c,..., 13c is disposed below the treatment cylinder 13b.

  The processing cylinder 13b is rotated by the driving force of the engine 40, and performs a process of separating the grain from the straw and the grain delivered from the handling chamber 10. A discharge port 13 e is opened below the processing chamber 13.

  Four processing cylinder valves 13 a, 13 a, 13 a, 13 a are juxtaposed along the front-rear direction on the upper wall of the processing chamber 13, and the processing cylinder valves 13 a, 13 a, 13 a, 13 a go to the rear part of the processing chamber 13. Adjust the amount of straw and grains to be delivered.

  Below the crimp net 15 is provided a swinging sorter 16 for sorting grains and straws. The rocking sorter 16 is provided on the back side of the rocking sorter 17 for making the grains and straws uniform and selecting the specific gravity, and for rough sorting of the grains and straws. A chaff sheave 18 to be performed, and a stroller rack 19 provided on the rear side of the chaff sheave 18 for dropping the grains mixed in the straw.

  The Strollac 19 has a plurality of through holes (not shown). A swing arm 21 is connected to the front portion of the swing sorter 17. The swing arm 21 is configured to swing back and forth. By the swinging of the swinging arm 21, the swing sorting device 16 swings, and selection of straw and grains is performed.

  The swing sorting device 16 is provided below the chaff sheave 18 and further includes a grain sheave 20 that performs fine sorting of grains and straw. Below the grain sheave 20, a first grain plate 22 inclined with the front facing down is provided, and on the front side of the first grain plate 22, a first screw conveyor 23 is provided. The first screw conveyor 23 takes in the grain that has slid down the first grain plate 22 and feeds it to the grain tank 4.

  At the rear of the first grain plate 22, an inclined plate 24 inclined downward is provided continuously. A second grain plate 25 inclined downward toward the front is connected to the rear end of the inclined plate 24. A second screw conveyor 26 is provided on the upper side of the connecting portion between the second grain plate 25 and the inclined plate 24 to convey straw and grains.

  Falling objects that have fallen onto the inclined plate 24 or the second grain plate 25 from the through holes of the Strollac 19 slide down toward the second screw conveyor 26. The fallen fallen object is conveyed to the processing rotor 14 provided on the left side of the handling cylinder 11 by the second screw conveyor 26 and is threshed by the processing rotor 14.

  A tang 27 that performs a wind-up operation is provided in front of the first screw conveyor 23 and below the swing sorter 17. The wind generated by the wind-up operation of the carp 27 travels backward. A rectifying plate 28 for sending the wind upward is disposed between the tang 27 and the first screw conveyor 23.

  A passage plate 36 is connected to the rear end portion of the second grain plate 25. A lower suction cover 30 is provided above the passage plate 36. Between the lower suction cover 30 and the passage plate 36 is an exhaust passage 37 through which dust is discharged.

  An upper suction cover 31 is provided above the lower suction cover 30. Between the upper suction cover 31 and the lower suction cover 30, an axial fan 32 for sucking and discharging soot is disposed. A dust exhaust port 33 is provided behind the axial flow fan 32. The air flow generated by the operation of the tang 27 is rectified by the rectifying plates 28 and 28, then passes through the swing sorting device 16 and reaches the dust outlet 33 and the exhaust passage 37.

  On the upper side of the upper suction cover 31, below the processing chamber 13, there is provided a sluice 35 that is inclined with the front facing downward. The discharged material discharged from the discharge port 13e of the processing chamber 13 falls on the Strollac 19.

  A discharge amount sensor 34 a including a piezoelectric element is provided between the crimp net 15 and the swing sorting device 16. A discharge amount sensor 34b is also provided at the lower rear side of the grain sieve 20.

  The grain that has leaked from the rear end of the crimp net 15 contacts the discharge sensor 34a, and a voltage signal is output from the discharge sensor 34a. Based on the output voltage signal, the threshing monitor of the display part mentioned later lights up.

  The grain that has leaked from the rear end of the grain sieve 20 or the grain conveyed by the wind from the tang 27 comes into contact with the discharge sensor 34a, and a voltage signal is output from the discharge sensor 34b. Based on the output voltage signal, a selection monitor of the display unit described later lights up.

  FIG. 3 is a longitudinal sectional view schematically showing the grain tank 4. As shown in FIG. 3, a rectangular blade plate 23 b is provided on the shaft portion 23 c at the upper end of the first screw conveyor 23. The vane plate 23b protrudes in the radial direction about the shaft portion 23c. The vane plate 23b rotates in synchronism with the screw conveyor 23. A pickup sensor 51 (see FIG. 4) is provided near the upper end of the shaft portion 23c.

  The shaft portion 23 c and the blade plate 23 b are accommodated in the casing 140. The casing 140 includes a side surface 141 that covers the periphery of the shaft portion 23c and the blade plate 23b. The side surface 141 faces the side surface of the grain tank 4 with the shaft portion 23c and the blade plate 23b interposed therebetween. A spout 4 b is provided on the side surface of the grain tank 4. The slat 23b faces the spout 4b.

  The grain that has fallen from the grain sieve 20 onto the first grain plate 22 slides down toward the first screw conveyor 23. The dropped grain is conveyed by the screw conveyor 23 first. Centrifugal force acts on the grain, and the grain ascends along the outer periphery of the screw conveyor 23 first. The slat 23b pushes the grain toward the spout 4b.

  As shown in FIG. 3, a plurality of pressure sensitive switches 4c, 4c,... As the grain is stored in the grain tank 4, the pressure-sensitive switch 4c is sequentially pressed from the lower side by the stored grain. The pressed pressure-sensitive switch 4c outputs a signal, and a control unit described later recognizes the storage amount based on the signal.

  Further, a spout sensor 300 (detection means) for detecting the impact value of the grain thrown in from the spout 4 b is arranged in the grain tank 4. A support member 310 is suspended from the top surface of the grain tank 4, and the spout sensor 300 is fixed to the support member 310.

  As shown by broken line arrows in FIG. 3, the extruded grain moves diagonally upward by the combination of the upward force received from the first screw conveyor 23 and the lateral force received from the blades 23b. Collides with sensor 300.

  The grain is intermittently thrown into the grain tank 4 from the spout 4b by the rotation of the blades 23b. Every time the input grain collides with the spout sensor 300, a voltage is output from the strain gauge, and the amount of the grain is calculated by the control unit based on the output voltage.

  A discharge screw conveyor 48 is provided in the discharge auger 4a. The bottom surface of the grain tank 4 is formed in a cone shape protruding downward. The lower end of the discharge screw conveyor 48 is located at the lowermost part of the bottom surface.

  On the bottom surface of the grain tank 4, a grain detection sensor 4 k that detects the presence or absence of grains is provided in the vicinity of the discharge screw conveyor 48. The grain detection sensor 4k is configured by, for example, a pressure-sensitive sensor, an optical sensor, an ultrasonic sensor, or the like. By the operation of the discharge screw conveyor 48, the grain stored in the grain tank 4 is conveyed upward and discharged to the outside through the discharge auger 4a.

  When the discharge auger 4a moves, the discharge screw conveyor 48 moves together with the discharge auger 4a.

  The combine includes an engine 40. FIG. 4 is a transmission mechanism diagram schematically showing the transmission path of the driving force of the engine 40.

  As shown in FIG. 4, the engine 40 is connected to a traveling mission 42 via an HST (Hydro Static Transmission) 41. The engine 40 is provided with an engine load detection sensor 40 a that detects a load on the engine 40. The engine load detection sensor 40 a detects a load on the engine 40 based on the fuel injection amount of the engine 40. The engine 40 is rated and controlled so as to maintain a constant rotational speed, and the magnitude of the fuel injection amount corresponds to the magnitude of the load on the engine 40. An engine load indicator on the display unit to be described later lights up based on the output signal of the engine load detection sensor 40a.

  The HST 41 has a hydraulic pump (not shown), a mechanism (not shown) for adjusting the flow rate of hydraulic oil supplied to the hydraulic pump and the pressure of the hydraulic pump, and a transmission circuit 41a for controlling the mechanism. .

  The traveling mission 42 has a gear (not shown) that transmits driving force to the traveling crawler 1. The traveling mission 42 is provided with a vehicle speed sensor 43 having a hall element. The vehicle speed sensor 43 detects the rotational speed of the gear and outputs a signal indicating the vehicle speed of the airframe corresponding to the rotational speed of the gear.

  The engine 40 is connected to the handling cylinder 11 and the processing cylinder 13b through an electromagnetic threshing clutch 44, and is also connected to a transmission mechanism 50. The transmission mechanism 50 is connected to the first screw conveyor 23.

  The engine 40 is connected to an eccentric crank 45 through a threshing clutch 44. The eccentric crank 45 is connected to the swing arm 21. As the eccentric crank 45 is driven, the swing sorting device 16 swings. The engine 40 is connected to the tang 27 through a threshing clutch 44. The engine 40 is connected to the reaping portion 3 via a threshing clutch 44 and an electromagnetic reaping clutch 46.

  The driving force of the engine 40 is transmitted to the traveling crawler 1 through the traveling mission 42, and the body 9 travels. Further, the driving force of the engine 40 is transmitted to the cutting unit 3 via the cutting clutch 46, and the cereal is harvested by the cutting unit 3.

  The driving force of the engine 40 is transmitted to the handling cylinder 11 via the threshing clutch 44, and the cereal is threshed by the handling cylinder 11. Further, the driving force of the engine 40 is transmitted to the processing cylinder 13b via the threshing clutch 44. The processing cylinder 13b separates the grain from the processed product threshed by the handling cylinder 11.

  Further, the driving force of the engine 40 is transmitted to the discharge screw conveyor 48 via the discharge clutch 47, and the discharge screw conveyor 48 discharges the grains stored in the grain tank 4 to the outside. A screw rotation speed detection sensor 48 a is provided in the vicinity of the discharge screw conveyor 48. The screw rotation speed detection sensor 48a has a hall element and detects the rotation speed per unit time of the discharge screw conveyor 48 (hereinafter simply referred to as the rotation speed of the discharge screw conveyor 48).

  In addition, the driving force of the engine 40 is transmitted to the swing sorting device 16 via the threshing clutch 44 and the eccentric crank 45, soot and grains that have leaked from the handling cylinder 11, and soot discharged from the processing chamber 13 and Grain selection is performed. Further, the driving force of the engine 40 is transmitted to the tang 27 through the threshing clutch 44, and the culm selected by the swing sorting device 16 is discharged from the dust outlet 33 and the exhaust passage 37 by the wake action of the tang 27. .

  FIG. 5 is a perspective view schematically showing the inside of the combine cabin 8. A steering wheel 81 and a driver seat 88 are provided in the cabin 8. A dashboard panel is provided on the left side of the driver's seat 88. The dashboard panel is provided with a cutting switch 80, a discharge switch 82, and a threshing switch 85. A display unit 180 is disposed at the center of the steering wheel 81 and is supported by the front wall of the cabin 8.

  FIG. 6 is a schematic diagram showing the display unit 180. The display unit 180 includes a rectangular liquid crystal display panel 181 and a plurality of switches 200 positioned below the liquid crystal display panel 181. The liquid crystal display panel 181 occupies most of the display unit 180, and includes an engine load indicator 182, a speedometer 183, a fuel gauge 184, a harvest monitor 185, a threshing monitor 186, a sorting monitor 187, and a tank monitor 188. , A grain amount monitor 189, a left turn signal 190, a right turn signal 191, an information display unit 192, and a touch panel unit 193.

  The engine load indicator 182 is located at the upper left and right central portions of the liquid crystal display panel 181 and has an inclined portion 182a that is inclined upward in the upper right direction, and an extended portion 182b that extends rightward from the upper end portion of the inclined portion 182a. Is provided. The inclined portion 182a and the extended portion 182b are constituted by a plurality of lighting portions.

  The engine load indicator 182 is lit in order from the left side as the engine load increases, and the number of lights increases. Based on the output of the engine load detection sensor 40a, the magnitude of the engine load is determined.

  A speedometer 183 for displaying the speed is located on the right side of the inclined portion 182a of the engine load indicator 182 and below the extended portion. On the right side of the speedometer 183, a fuel gauge 184 indicating the remaining amount of fuel is located apart from the speedometer 183.

  A harvest monitor 185 is displayed below the speedometer 183. The harvest monitor 185 displays the amount of grain that has been introduced each time the grain is introduced into the grain tank 4 by the blades 23b. The harvest monitor 185 has an elongated rectangular shape on the left and right, and lights up so as to be longer or shorter depending on the magnitude of the impact force of the grain amount that has collided with the spout sensor 300.

  On the lower left side of the harvest monitor 185, a long threshing monitor 186 is located on the left and right indicating the threshing status of the handling cylinder 11. The threshing monitor 186 is composed of a plurality of lighting units arranged side by side.

  In the threshing monitor 186, as the amount of the grain in contact with the discharge amount sensor 34a is increased, the lighting unit is sequentially lit from the left side, and the number of lighting is increased.

  On the lower right side of the harvest monitor 185, a long sorting monitor 187 is located on the left and right indicating the sorting status of the sorting device 16. The sorting monitor 187 is composed of a plurality of lighting units arranged side by side.

  In the sorting monitor 187, as the amount of the grain in contact with the discharge amount sensor 34b increases, the lighting unit is lit in order from the left side, and the number of lighting is increased.

  On the left side of the threshing monitor 186 and the engine load indicator 182, a tank monitor 188 indicating the amount of grain stored in the grain tank 4 is located. The tank monitor 188 is located at the left edge portion of the display unit 180. The tank monitor 188 has a plurality of lighting portions arranged side by side in the vertical direction, and as the pressure sensitive switches 4c, 4c,... 4c are pressed in order from the lower side, the lighting portions are also lit in order from the lower side.

  A grain quantity monitor 189 indicating the grain quantity is located on the right side of the threshing monitor 186. The grain amount monitor 189 displays the grain amount calculated by the control unit 100 (see FIG. 8) described later. A left turn signal 190 indicating a left turn is positioned above the tank monitor 188, and a right turn signal 191 indicating a right turn is positioned to the right of the engine load indicator 182.

  Below the threshing monitor 186 and the sorting monitor 187 is an information display unit 192 that displays various information such as time, gear, alarm, etc., and a selection switch represented by an arrow below the information display unit 192 The touch panel unit 193 including the menu switch is located. The information display unit 192 and the touch panel unit 193 are arranged on the lower edge portion of the display unit 180.

  By operating the touch panel unit 193 or the switch 200, switching of an image displayed on the display unit 180, setting of a target discharge amount to be described later, or inputting of other information is performed.

  FIG. 7 is a schematic diagram showing the display unit 180 switched to an image showing the amount of grain discharged. When the user operates the touch panel unit 193 or the switch 200 to select the display of the discharge amount from the grain tank 4, the display unit 180 displays an image indicating the discharge amount of the grain (hereinafter, the discharge amount of the grain is shown). The image is called a discharge meter). Further, when an emission meter display process described later is executed, the emission meter is displayed on the display unit 180.

  On the liquid crystal display panel 181, a discharge amount display unit 195 indicating the discharge amount is displayed. As shown in FIG. 7, the discharge amount is displayed, for example, “discharge amount 300 kg”. The information display unit 192 displays “automatic stop”, “reset”, “return”, and “change discharge speed”. “Automatic stop” is a display for selecting or deselecting an automatic stop process described later.

  When the user operates the touch panel unit 193 or the switch 200 and selects “automatic stop”, “ON” is displayed. The display of “ON” means that an automatic stop process described later is executed.

  When the user operates the touch panel unit 193 or the switch 200 to cancel the selection of “automatic stop”, the display of “ON” disappears. The non-display of “ON” means that automatic stop processing is not executed. The selection and cancellation of “automatic stop” are stored in an EEPROM 100d (see FIG. 8) described later.

  When the user operates the touch panel unit 193 or the switch 200 and selects “reset”, the discharge amount displayed on the discharge amount display unit 195 is reset.

  When the user operates the touch panel unit 193 or the switch 200 and selects “return”, the discharge meter returns to the image before switching (hereinafter, the image before switching is referred to as a normal meter).

  When the user operates the touch panel unit 193 or the switch 200 and selects “change discharge speed”, the rotation speed of the discharge screw conveyor 48 is changed.

  For example, when “change discharge speed” is selected, a speed level of “1 2 3 4 5” is displayed. 1 indicates the minimum speed and 5 indicates the maximum speed. In the initial state, for example, the color around 3 is different from the other colors. Different numbers in the surroundings indicate the selected speed level. When the user selects any number, the rotation speed of the discharge screw conveyor 48 is changed.

  The user can change the speed level and change the rotation speed of the discharge screw conveyor 48 according to the type of crop to be harvested. For example, when harvesting wheat containing more water than straw, the number of rotations can be reduced compared to harvesting straw. Crops with high water content are more susceptible to damage than crops with low water content.

  The speed level need not be displayed. In this case, for example, each time “change discharge speed” is selected, the rotational speed of the discharge screw conveyor 48 decreases stepwise or increases stepwise.

  A control unit 100 that calculates the amount of grain stored in the grain tank 4 is mounted on the combine. FIG. 8 is a block diagram illustrating a configuration of the control unit 100.

  The control unit 100 includes a CPU (Central Processing Unit) 100a, a ROM (Read Only Memory) 100b, a RAM (Random Access Memory) 100c, and an EEPROM (Electrically Erasable and Programmable Read Only Memory) 100d connected to each other by an internal bus 100g. ing. The CPU 100a reads the control program stored in the ROM 100b into the RAM 100c, and executes necessary control according to the control program. The CPU 100a has a built-in timer (timer).

  Instead of the EEPROM 100d, other rewritable storage media such as EPROM (Erasable Programmable Read Only Memory), HD (Hard Disk), and flash memory may be used.

  A correction variable X is set in the EEPROM 100d, and a value is stored in the correction variable X as necessary. Further, a threshold value α for determining whether or not the detection value of the spout sensor 300 is included in the calculation target of the grain amount is set.

  The EEPROM 100d stores a function indicating the relationship between the rotation speed of the discharge screw conveyor 48, the rotation time of the discharge screw conveyor 48, and the discharge amount.

  A target discharge amount is set in the EEPROM 100d by operating the touch panel unit 193 or the switch 200. The EEPROM 100d stores “automatic stop” selection and cancellation thereof.

  The control unit 100 outputs a connection or disconnection signal to the threshing clutch 44, the mowing clutch 46, and the discharge clutch 47 through the output interface 100f. Further, the control unit 100 outputs a display signal indicating that a predetermined image is displayed on the display unit 180 via the output interface 100f.

  Each output signal of the cutting switch 80, the spout sensor 300, the pressure sensitive switch 4c, the pickup sensor 51, the threshing switch 85, the discharge switch 82, the switch 200, the grain detection sensor 4k, the auger detection sensor 4p, and the screw rotation number detection sensor 48a. Is input to the control unit 100 via the input interface 100e.

  Corresponding to ON / OFF of the cutting switch 80, the cutting clutch 46 and the threshing clutch 44 are connected or disconnected. Further, the discharge clutch 47 is connected or disconnected in response to the on / off of the discharge switch 82. Further, the threshing clutch 44 is connected or disconnected corresponding to the on / off of the threshing switch 85.

  The CPU 100a integrates the detection values related to the output signal of the spout sensor 300, and determines whether or not to include the detected value in comparison with the threshold value α. The detection value included in the integration target is stored in the EEPROM 100d in synchronization with the detection value related to the output signal of the pickup sensor 51.

  FIG. 9 is an example of a graph showing the relationship between the detection value of the spout sensor 300 and the detection value of the pickup sensor 51. FIG. 9A is a graph showing the relationship between time and the detection value of the spout sensor 300. The detection value of the spout sensor 300 indicates the amount of distortion due to the collision of the grain, and is a moving average value at a predetermined sampling number. FIG. 9B is a graph showing the relationship between time and the detection value of the pickup sensor 51. The detection value of the pickup sensor 51 indicates the rotation start time and rotation end time in one rotation of the blade plate 23b. In the following description, the subscript of the period P in FIG. 9 is omitted as appropriate.

  The detection value of the pickup sensor 51 is detected as a pulse wave, and the interval between the pulse waves corresponds to the cycle of one rotation of the screw conveyor 23 (rotary shaft 23c), that is, the cycle P of one rotation of the blade plate 23b. Note that the reciprocal of the period P corresponds to the rotation speed, and the period P can also be regarded as the rotation speed. The CPU 100a takes in the detection value of the spout sensor 300 at a predetermined sampling period (for example, 100 [ms]) and stores it in the EEPROM 100d. The CPU 100a creates a time stamp each time a pulse wave is input from the pickup sensor 51, and associates the time stamp with the detection value input from the spout sensor 300 when the pulse wave is input. To remember.

  In FIG. 9, when the grain is thrown into the grain tank 4 by the blade 23b, the detection value by the collision of the grain is input from the spout sensor 300 to the CPU 100a between P / 4 to 3P / 4. The The detection value input from 0 to P / 4 and 3P / 4 to P from the spout sensor 300 to the CPU 100a is a detection value when the grain does not collide with the spout sensor 300.

  In FIG. 9A, the threshold value α corresponds to a detection value detected by the spout sensor 300 due to disturbances such as temperature characteristics of the spout sensor 300, wind pressure by the blades 23b, and inclination of the airframe 9. When the grain is not put into the grain tank 4 by the blade 23b, ideally, the detected value due to the collision of the grain is input from the spout sensor 300 to the CPU 100a during P / 4 to 3P / 4. Not. However, actually, a detection value (threshold value α) due to disturbance (for example, wind pressure by the blade 23b) is input from the spout sensor 300 to the CPU 100a.

  The CPU 100a compares the detection value input from the spout sensor 300 during the period P / 4 to 3P / 4 with the threshold value α. When the detected value includes a value that exceeds the threshold value α, the CPU 100a determines that the detected value input between P / 4 to 3P / 4 is to be integrated (period P1 in FIG. 9A). , P2 and P5 area of broken line hatched portion). The value to be integrated corresponds to the impulse by the collision of the grain with the spout sensor 300.

  When the detected value does not include a value that exceeds the threshold value α, the CPU 100a excludes the detected value input between P / 4 to 3P / 4 from the targets to be integrated (in FIG. 9A, the period P3). And P4 part).

  On the other hand, the value (area of the solid line hatched portion in FIG. 9A) obtained by integrating the detection values of the spout sensor 300 between 0 to P / 4 and 3P / 4 to P corresponds to a steady deviation. The steady deviation is caused by vibration of the engine 40, vibration propagated to the spout sensor 300 while traveling on a rough field, characteristics of the spout sensor 300, and the like.

  The CPU 100a performs necessary processing on a value obtained by integrating the detection values of the spout sensor 300 between 0-P / 4 and 3P / 4-P in a predetermined cycle (for example, 1 [s]), and accesses the EEPROM 100d. And stored in the correction variable X.

  The CPU 100a accesses the EEPROM 100d, refers to the time stamp, and integrates the detection values of the spout sensor 300 between P / 4 and 3P / 4. Then, the steady deviation included in the integrated value is removed using the value stored in the correction variable X. For example, the value stored in the correction variable X is subtracted from the integrated value.

  The CPU 100a stores the correction value D from which the steady deviation is removed in the RAM 100c. Based on the correction value D, the grain amount stored in the grain tank 4 is calculated. The calculated grain amount is stored in the EEPROM 100d and integrated. The accumulated grain amount is displayed on the grain amount monitor 189.

  When the discharge auger 4a is separated from the auger support part 4s, the control unit 100 executes a discharge amount meter display process. FIG. 10 is a flowchart for explaining the emission meter display processing by the control unit 100.

  The CPU 100a of the control unit 100 takes in the output signal of the auger detection sensor 4p and determines whether or not the auger detection sensor 4p is turned off, that is, whether or not the discharge auger 4a is separated from the auger support 4s (step). S1). When the auger detection sensor 4p is off, the discharge auger 4a is considered to be moving away from the grain tank 4.

  When the discharge auger 4a is not separated from the auger support portion 4s (step S1: NO), the CPU 100a returns the process to step S1.

  When the discharge auger 4a is separated from the auger support portion 4s (step S1: YES), the CPU 100a displays a discharge amount meter on the display unit 180 (step S2). The display on the display unit 180 is switched from the normal meter (see FIG. 6) to the discharge amount meter (see FIG. 7).

  Next, the CPU 100a takes in the output signal of the auger detection sensor 4p, and waits until the auger detection sensor 4p is turned on, that is, until the discharge auger 4a is placed on the auger support portion 4s (step S3: NO).

  When the discharge auger 4a is placed on the auger support part 4s (step S3: YES), the CPU 100a displays a normal meter on the display part 180 (step S4). The display on the display unit 180 is switched from the discharge amount meter to the normal meter.

  When the user operates the discharge switch 82 to turn on the discharge switch 82, the discharge clutch is connected, the discharge screw conveyor 48 starts rotating, and the combine starts discharging the grain. When the user operates the discharge switch 82 to turn off the discharge switch 82, the discharge clutch is disconnected, the discharge screw conveyor 48 stops rotating, and the combine stops discharging the grain.

  FIG. 11 is a flowchart for explaining the on / off storage process of the grain detection sensor by the control unit 100. The CPU 100a takes in the output signal of the discharge switch 82 and waits until the discharge switch 82 is turned off, that is, until the discharge of the grains stops (step S11: NO).

  When the discharge of the grain is stopped (step S11: YES), the CPU 100a takes in the output signal of the grain detection sensor 4k and stores in the EEPROM 100d whether the grain detection sensor 4k is on or off. (Step S12).

  When the control unit 100 restarts the discharge of the grain after stopping the discharge of the grain, when the kernel detection sensor 4k is turned off at the stop of the discharge of the grain, the control unit 100 waits for a predetermined time and then sets the discharge amount. Perform the operation.

  FIG. 12 is a flowchart for explaining the discharge amount calculation processing by the control unit 100. The CPU 100a captures the output signal of the discharge switch 82 and waits until the discharge switch 82 is turned on, that is, until the discharge of the grain is started (step S21: NO).

  When the grain discharge is started (step S21: YES), the CPU 100a refers to the EEPROM 100d and determines whether or not the grain detection sensor 4k is turned off at the previous discharge stop time (step S22, step). (See S12).

  If the grain detection sensor 4k has not been turned off at the time of the previous discharge stop (step S22: NO), that is, if the grain detection sensor 4k has been turned on, the process proceeds to step S24 described later. When the grain detection sensor 4k is on, the inside of the discharge auger 4a is considered to be filled with grain.

  When the grain detection sensor 4k is turned off at the time of the previous discharge stop (step S22: YES), the CPU 100a counts with a timer and waits for a predetermined time (step S23). When the grain detection sensor 4k provided at the bottom of the grain tank 4 is off at the time of the previous discharge stop, the grain tank 4 is empty and the inside of the discharge auger 4a is also empty. it is conceivable that. Therefore, until the predetermined time elapses after the rotation of the discharge screw conveyor 48 is started, the grain moves in the discharge auger 4a and is not discharged from the discharge auger 4a.

  After waiting for a predetermined time, the CPU 100a calculates the amount of grain discharged based on the detection value of the screw rotation speed detection sensor 48a and the time measured by the timer (step S24).

  When the grain detection sensor 4k has been turned off at the previous discharge stop time (step S22: YES), the CPU 100a measures, for example, the time elapsed after waiting for a predetermined time in step S23 with a timer. The CPU 100a stores the measured time and the number of rotations detected by the screw rotation number detection sensor 48a in the function stored in the EEPROM 100d (the relationship between the number of rotations of the discharge screw conveyor 48, the rotation time of the discharge screw conveyor 48, and the discharge amount). To calculate the emission amount.

  When the grain detection sensor 4k is turned on at the previous discharge stop time (step S22: NO), the CPU 100a detects the time after the start of discharge measured by the timer and the screw rotation number detection sensor 48a. The amount of rotation is applied to the function to calculate the discharge amount (step S24). That is, the discharge amount is calculated immediately after the start of discharge.

  Note that the timer is configured so that a plurality of times can be measured with each of a plurality of time points as start time points. The timer keeps time after starting discharging (step S21: YES).

  Next, the CPU 100a displays the calculated discharge amount on the discharge amount display unit 195 (step S25). The CPU 100a takes in the output signal of the discharge switch 82, and determines whether or not the discharge switch 82 is turned off, that is, whether or not the discharge of the grains has stopped (step S26).

  When the discharge switch 82 is on and the discharge of the grains has not stopped (step S26: NO), the CPU 100a returns the process to step S24.

  When the discharge switch 82 is turned off and the grain discharge is stopped (step S26: YES), the CPU 100a stops the calculation of the discharge amount (step S27). Note that the CPU 100a also stops the calculation of the discharge amount even when the grain discharge is automatically stopped by an automatic stop process described later.

  CPU100a correct | amends the grain quantity stored in the grain tank 4 by discharge amount (step S28). For example, the discharge amount is subtracted from the grain amount stored in the grain tank 4 (the grain amount displayed on the grain amount monitor 189).

  At this time, when the user operates the switch 200 or the touch panel unit 193 and calls a normal meter, the corrected grain amount is displayed on the grain amount monitor 189. In addition, after the process of step S28 is complete | finished, a normal meter may be called automatically and the corrected grain quantity may be displayed on the grain quantity monitor 189.

  The grain amount may be corrected each time the discharge amount is calculated. In this case, the grain amount displayed on the grain amount monitor 189 is sequentially updated.

  When “automatic stop” is selected, the control unit 100 automatically stops the grain discharge when the calculated discharge amount reaches the target discharge amount.

  FIG. 13 is a flowchart illustrating an automatic stop process of the control unit 100 that automatically stops the discharge of the grains when the target discharge amount is reached. It is assumed that the target discharge amount is set in the EEPROM 100d by operating the touch panel unit 193 or the switch 200.

  The CPU 100a takes in the output signal of the discharge switch 82 and waits until the discharge switch 82 is turned on, that is, until the discharge of the grain is started (step S31: NO). When the discharge switch 82 is turned on, the discharge screw conveyor 48 rotates and discharges the grain.

  When the grain discharge is started (step S31: YES), the CPU 100a refers to the EEPROM 100d and determines whether or not “automatic stop” is selected (step S32).

  When “automatic stop” is not selected (step S32: NO), the CPU 100a returns the process to step S32.

  When “automatic stop” is selected (step S32: YES), the CPU 100a displays on the display unit 180 that the “automatic stop” function is activated (step S33). Specifically, as described above, “ON” is displayed on the display unit 180 (see FIG. 7).

  Next, the CPU 100a waits until the discharge amount calculated in step S24 (see FIG. 12) becomes equal to or greater than the target discharge amount (step S34: NO).

  When the calculated discharge amount is equal to or greater than the target discharge amount (step S34: YES), the CPU 100a disconnects the discharge clutch 47 and stops discharging (step S35).

  After stopping the discharge, the CPU 100a corrects the amount of grain stored in the grain tank 4 with the amount of discharge (step S36). For example, the discharge amount is subtracted from the grain amount stored in the grain tank 4 (the grain amount displayed on the grain amount monitor 189).

  At this time, when the user operates the switch 200 or the touch panel unit 193 and calls a normal meter, the corrected grain amount is displayed on the grain amount monitor 189. In addition, after the process of step S36 is complete | finished, a normal meter may be called automatically and the corrected grain quantity may be displayed on the grain quantity monitor 189.

  The grain amount may be corrected each time the discharge amount is calculated. In this case, the grain amount displayed on the grain amount monitor 189 is sequentially updated. The combiner can execute the above-described processes (see FIGS. 10 to 13) in parallel.

  When the threshold is set in the ROM 100b or the EEPROM 100d, the step of calculating the difference between the calculated discharge amount and the target discharge amount, the step of comparing the calculated difference with the threshold value, and the difference being smaller than the threshold value The step of automatically lowering the rotational speed of the discharge screw conveyor 48 may be added between steps S34 and S35. When a plurality of threshold values having different sizes are set in the ROM 100b or the EEPROM 100d, the number of rotations of the discharge screw conveyor 48 can be reduced stepwise by sequentially comparing each of the plurality of threshold values with the difference in descending order. By reducing the number of revolutions of the discharge screw conveyor 48, the discharge amount discharged from the discharge auger 4a before the stoppage of the discharge approaches the target discharge amount.

  FIG. 14 is a flowchart for explaining an automatic stop process of the control unit 100 that automatically stops the discharge of the grains when all the grains in the grain tank 4 are discharged.

  The CPU 100a takes in the output signal of the discharge switch 82 and waits until the discharge switch 82 is turned on, that is, until the discharge of the grain is started (step S41: NO). When the discharge switch 82 is turned on, the discharge clutch 47 is connected and the discharge screw conveyor 48 rotates to discharge the grain.

  When the discharge of the grain is started (step S41: YES), the CPU 100a takes in the output signal of the grain detection sensor 4k, and determines whether the grain detection sensor 4k is turned off (step S42).

  When the grain detection sensor 4k is not turned off (step S42: NO), the CPU 100a returns the process to step S41. When the grain detection sensor 4k is not turned off, it is considered that a large amount of grain remains in the grain tank 4.

  When the grain detection sensor 4k is turned off (step S42: YES), the CPU 100a starts measuring time with a timer and waits until a predetermined time elapses (step S43). When the grain detection sensor 4k is turned off, it is considered that substantially all of the grain in the grain tank 4 is discharged and only a small amount of grain remains or remains in the discharge auger 4a. By waiting for a predetermined time, a small amount of the grain remaining in the grain tank 4 or the grain remaining in the discharge auger 4a is discharged.

  After waiting for a predetermined time, the CPU 100a disconnects the discharge clutch 47 (step S44). When the discharge clutch 47 is disconnected, the discharge screw conveyor 48 is stopped, and the integration of the discharge amount is also stopped.

  In the combine according to the embodiment, the discharge amount is calculated based on the rotation speed and rotation time of the discharge screw conveyor 48. Therefore, in the calculation of the discharge amount, it is difficult to be affected by the disturbance, and the discharge amount can be obtained with high accuracy. Further, since the discharge amount is displayed, the user can easily recognize the discharge amount.

  When the grain detection sensor 4k provided at the bottom of the grain tank 4 is turned off when the discharge from the grain tank 4 is stopped, the grain tank 4 is empty and the inside of the discharge auger 4a Is also considered empty. Thereafter, when the rotation of the discharge screw conveyor 48 is started, the grain has moved in the discharge auger 4a and has not yet been discharged from the discharge auger 4a until a predetermined time has elapsed after the rotation starts.

  The combine according to the embodiment waits for a predetermined time after the rotation of the discharge screw conveyor 48 starts when the grain detection sensor 4k is turned off when the discharge from the grain tank 4 is stopped. Is calculated. On the other hand, when the grain detection sensor 4k is on, the discharge auger 4a is considered to be filled with the grain, so that the discharge amount is immediately after the start of the rotation of the discharge screw conveyor 48 without waiting for a predetermined time. Is calculated. Thereby, the calculation start time of discharge | emission amount can be changed with the case where the grain remains in the discharge auger 4a, and the case where it does not remain, and discharge | emission amount can be calculated accurately.

  Further, when the discharge clutch 47 is connected and the grain detection sensor 4k is turned off, it is considered that substantially all the grains stored in the storage tank 4 are discharged by the rotation of the discharge screw conveyor 48. In the case described above, since the discharge clutch 47 is disconnected after waiting for a predetermined time, the discharge screw conveyor 48 automatically stops after discharging all the grains from the storage tank 4 and the discharge auger 4a. Therefore, it is possible to prevent the discharge screw conveyor 48 from running idly and the discharge amount from being mistakenly integrated.

  Moreover, since the discharge | emission of a grain stops automatically when reaching the target discharge | emission amount, a user's convenience can be improved. Further, the user can change the rotation speed of the discharge screw conveyor 48 according to the type of crop to be harvested. For example, when harvesting wheat containing more water than straw, the number of rotations can be reduced compared to harvesting straw.

  Further, when the distal end side of the discharge auger 4a is separated from the storage portion, the display on the display unit 180 is switched from the normal meter to the discharge amount meter. Since the discharge amount is automatically displayed, the convenience for the user is improved.

  Moreover, the grain amount stored in the grain tank 4 is corrected by the calculated discharge amount. For example, the discharge amount is subtracted from the grain amount stored in the grain tank 4. Moreover, since the grain amount after correction | amendment is displayed, the user can recognize the grain amount after discharge | emission easily.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of claims and the scope equivalent to the scope of claims. Is done.

2 Threshing device 4 Grain tank (storage part)
4k grain detection sensor (grain detection means)
4p auger detection sensor 48 discharge screw conveyor (screw conveyor)
48a Screw rotational speed detection sensor (rotational speed detection means)
100 control unit (discharge amount calculation unit, discharge amount setting means)
100a CPU (timer)
100b ROM
100c RAM
100d EEPROM (recording means)
195 Emission amount display unit 193 Touch panel unit (emission amount setting means)
200 switch (Discharge amount setting means)

Claims (3)

In a combine equipped with a threshing device for threshing the harvested cereal, a storage unit for storing the grain threshed by the threshing device, and a screw conveyor for discharging the grain stored in the storage unit,
A timing unit for measuring the rotation time of the screw conveyor;
A rotational speed detection means for detecting the rotational speed of the screw conveyor;
Based on the number of rotations detected by the number-of-rotations detection means and the rotation time measured by the timekeeping unit, a discharge amount calculation unit that calculates the amount of grain discharged from the storage unit,
A discharge amount display unit for displaying the discharge amount calculated by the discharge amount calculation unit ;
Kernel detection means provided at the bottom of the reservoir, and detects the presence or absence of cereal,
A recording means for recording the presence or absence of a grain detected by the grain detection means when the screw conveyor is stopped ;
When the absence of grain is recorded in the recording means, the discharge amount calculation unit waits for a predetermined time after starting the rotation of the screw conveyor, and then starts calculating the discharge amount. Combine that is characterized by that. A driving source;
A clutch for connecting or disconnecting the drive source and the screw conveyor,
If the absence of grain is detected by the clutch Yes connected and the grain detection section, to claim 1, characterized in that waiting a predetermined time are so as to cut the clutch Combine as described. An emission amount setting means for setting an emission amount;
Or a means for stopping the screw conveyor when the discharge amount calculated by the discharge amount calculation unit reaches a discharge amount set by the discharge amount setting means. 2. Combine according to 2 .

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