JP2017112976A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid discharge work while the machine body is inclined that would cause trouble in carrying-out work.SOLUTION: A combine-harvester according to the present invention comprises: a grain tank 12 for storing the grain obtained by a thresher 11 which applies threshing treatment to grain culms reaped by a reaping part 4; a grain discharge apparatus 40 including a longitudinal conveyance part coupled to the grain tank 12, a lateral conveyance part coupled to an upper end portion of the longitudinal conveyance part, and a discharge port formed at a tip portion of the lateral conveyance part, and discharging, through the discharge port, the grain stored in the grain tank 12; a swiveling mechanism SM for swiveling the grain discharge apparatus about a vertical axis between a retracted position in which the discharge port is retracted in the machine body in plan view and a discharge position in which the discharge port goes out of the machine body in plan view; an inclination detection device 93 for detecting an inclination of the machine body; and a grain discharge management part 553 for inhibiting the swiveling from the retracted position to the discharge position of the grain discharge apparatus 40 when the inclination exceeds a threshold value for the discharge apparatus.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a combine equipped with a grain discharging device that is capable of turning between a storing posture and a discharging posture around a vertical axis and that discharges the grains stored in a grain tank in the discharging posture.

  The combine by patent document 1 is equipped with the carrying-out lever which is an operation tool which turns a grain carrying-out apparatus, and turns the horizontal conveyance part which comprises a grain carrying-out apparatus to the outer side of a body at the time of a grain discharge operation. , Keep the outlet at the tip away from the aircraft. Thereby, a grain can be discharged | emitted to the loading platform of the conveyance truck stopped beside the combine. If such a discharge operation is performed in a state where the aircraft is inclined due to an inclined ground or the like, the balance of the aircraft may be deteriorated, resulting in inconvenience in the carry-out operation.

JP 2013-192474 A

  From the above situation, there is a demand for avoiding the discharge work in the inclined state of the airframe that causes inconvenience in the carry-out work.

  The combine according to the present invention includes a threshing device that threshs the harvested cereal harvested by the reaping unit, a grain tank that stores the grain obtained by the threshing device, an engine, the threshing device, and the grain tank. A vertical conveyance unit coupled to the grain tank, a horizontal conveyance unit coupled to the upper end of the vertical conveyance unit, and a discharge port formed at the tip of the horizontal conveyance unit. A grain discharging device for discharging the grains stored in the grain tank from the outlet; a storage posture in which the outlet enters the machine body in plan view; and the outlet in plan view. A turning mechanism for turning the grain discharging device around a vertical axis between a discharging posture to go out, a tilt detector for detecting a tilt angle of the fuselage, and the tilt angle sets a threshold for the discharging device If exceeded, from the stored posture of the grain discharging device And a grain discharge management unit that prohibits turning to the serial discharging position.

  According to this configuration, when the tilt angle of the airframe detected by the tilt detector exceeds the discharge device threshold value set in advance for the grain discharge device, the storage posture of the grain discharge device To the discharge posture is prohibited. This avoids inadvertent execution of the discharge operation in an undesired tilted state of the aircraft.

  There is a combine configured to collect the grains stored in the grain tank in one place by tilting the grain tank and to effectively discharge the grains. Such a combine is provided with a tank swinging mechanism that swings the grain tank up and down between a descending posture and a rising posture around a horizontal axis. The swing of the grain tank to the rising posture may also cause inconvenience in the balance of the aircraft. For this reason, in a preferred embodiment of such a combine, when the inclination angle exceeds a tank threshold value, the grain discharge management unit shifts the grain tank from the lowered position to the raised position. Prohibit rocking. Thereby, it is also avoided that the grain tank is lifted and swung in an undesired tilted state of the aircraft.

  The swing of the grain tank to the rising posture has a greater influence on the balance of the aircraft than the turning of the grain discharging device to the discharging posture. Therefore, it is preferable that the tank threshold value is set smaller than the discharge device threshold value.

  There are various inconveniences when the combine begins to cut and travel while the grain tank remains in the raised position. For example, the grain tank in the rising posture has a bad influence on the balance of the aircraft as compared with the grain tank in the falling posture. In addition, the structure of the part related to the grain conveyance from the threshing device to the grain tank is designed in accordance with the grain tank in the lowered position, and when the grain tank is in the raised position, the grain to the grain tank There are many combines that cannot be transported normally. For this reason, in a preferred embodiment of the present invention, a work clutch for turning on and off the transmission of power from the engine to the work device including the reaping part and the threshing device is provided, and the grain tank is not in the lowered posture. In this case, the operation of engaging the work clutch is prohibited. With this configuration, if the grain tank is not in the lowered position, work devices such as a cutting unit and a threshing device do not operate, and the above-described inconvenience is avoided.

  The grain stored in the grain tank may be offset or clogged in the carry-out route to the grain discharging device. Such inconvenience causes the grain tank to swing up and down. Can be solved. For this reason, in one preferred embodiment of the present invention, a discharging tank swing control unit that performs a temporary vertical swing operation of the grain tank during the grain discharging by the grain discharging device is provided. Is provided. Furthermore, when a large amount of grains is stored in the grain tank, clogging in the carry-out route to the grain discharging device is likely to occur. For this reason, in one of the preferred embodiments of the present invention, a storage amount measuring device for measuring a grain storage amount in the grain tank is provided, and the drain tank swing control unit is configured to store the grain storage amount. In response to the above, the vertical swing operation is executed.

  It must be avoided that the combine travels unexpectedly during the grain discharge by the grain discharger. Such unexpected travel of the combine can be avoided by reducing the engine speed to the idling speed. This idling rotational speed is a rotational speed at which the traveling of the combine is difficult even if the grain discharging device can be driven. Therefore, an engine stall occurs even if the vehicle tries to run at the idling speed. For this reason, it is also preferable that the engine speed is set to the idling speed during the grain discharging by the grain discharging device.

  As the grain storage amount of the grain tank increases, the center of gravity of the aircraft increases, and the balance of the aircraft deteriorates. Therefore, if the grain storage amount is large and the grain discharging device is in the discharging posture, the balance of the machine body is considerably deteriorated. Moreover, if such a state occurs on an inclined land, the balance of the machine body becomes worse. Therefore, in one preferred embodiment of the present invention, the discharge device threshold is changed based on a grain storage amount in the grain tank, and the larger the grain storage amount, the more the discharge device. The threshold value is set small.

  When the inclination angle of the airframe is increased and the posture change of the grain tank or the grain unloading device is prohibited, it is important to notify the operator of this and call the operator's attention. For this reason, in one of the preferred embodiments of the present invention, when the inclination angle exceeds the discharge device threshold, a warning to that effect is given.

It is a right view which shows the whole combine. It is a top view which shows the whole combine. It is a rear view which shows a grain tank. It is a perspective view which shows a tank rocking | fluctuation mechanism and a turning mechanism. It is a side view of the rocking angle detector which detects the rocking angle of a grain tank. It is a top view of the turning angle detector which detects the turning angle of a grain discharging apparatus. It is a top view of a remote control device. It is a functional block diagram of posture change control of a grain tank and a grain discharge device. It is a flowchart which shows a grain discharge management routine. It is explanatory drawing explaining the up-and-down swing for clogging of a grain tank. It is a schematic diagram which shows the operation | movement for clogging of a grain tank.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a right side view showing the entire combine in the present embodiment. FIG. 2 is a plan view showing the entire combine. 1 and 2, the direction [F] is defined as the front side of the aircraft, the direction [B] is defined as the rear side of the aircraft, the direction [L] is defined as the left side of the aircraft, and the direction [R] is defined as the right side of the aircraft. .

  As shown in FIG. 1 and FIG. 2, the combine is equipped with a pair of left and right front wheels 2 and a pair of left and right rear wheels 3 on a body frame 1 which is a main component of the body. An engine E is provided at a portion between the front wheel 2 and the rear wheel 3. The driving force is transmitted from the engine E to the traveling mission 6, and the left and right front wheels 2 are driven by the traveling mission 6, so that the combine runs independently. A boarding type operating unit 7 is provided at the front of the body frame 1. The driving unit 7 includes a cabin 70 that covers the boarding space. The cutting part 4 is connected to the front part of the body frame 1 so as to be swingable up and down. A threshing device 11 is provided behind the operation unit 7 in the machine body frame 1, and a grain tank 12 is provided on the threshing device 11. The grain obtained by the threshing device 11 is conveyed to the grain tank 12 by the whipping device 14 and stored in the grain tank 12.

  As shown in FIG. 3, a tank frame body 15 is erected around the threshing device 11 in the machine body frame 1. The tank frame body 15 is connected to the threshing device 11.

  As shown in FIG. 3, the grain tank 12 is supported by the tank frame body 15 so as to be vertically swingable around the horizontal axis P of the bottom screw 19 extending in the longitudinal direction of the machine body. A tank lifting cylinder 25 is connected across the tank frame 15 and the lower part of the grain tank 12. The tank elevating cylinder 25 is constituted by a hydraulic cylinder. The grain tank 12 swings up and down by a tank lifting cylinder 25 over a descending position that creates a descending attitude and an ascending position that creates an ascending attitude, with the horizontal axis P as the center of swinging elevation. The tank lifting cylinder 25 constitutes a tank swinging mechanism TM that swings the grain tank 12 up and down around the horizontal axis P.

  When the grain tank 12 is in the lowered position, the grain tank 12 is in a horizontal state in which the left end side of the grain tank 12 is lowered near the upper end of the threshing device 11. In the descending posture of the grain tank 12, the supply port of the grain tank 12 communicates with the discharge port of the cerealing device 14, and the grain supplied by the cerealing device 14 can be stored in the grain tank 12. When the grain tank 12 is in the ascending posture, the left end side of the grain tank 12 is in an inclined state in which the lower end portion 12a on the right end side of the grain tank 12 is raised. When the grain tank 12 is in the ascending posture, the stored grain moves to the lower end portion 12 a by natural flow and is supplied to the bottom screw 19.

  As shown in FIG. 1, the grain discharging device includes a vertical conveying unit 41 extending upward from the connection case 23 and a horizontal conveying unit 45 extending horizontally from the upper end of the vertical conveying unit 41. 40 is configured. The grain stored in the grain tank 12 is discharged out of the machine by the grain discharging device 40.

  As shown in FIG. 2, the horizontal conveyance unit 45 includes a conveyance cylinder 46 and a horizontal screw 47 provided inside the conveyance cylinder 46 so as to be rotationally driven. A discharge port 48 is provided at the tip of the transport cylinder 46. A discharge cylinder 49 (see FIG. 1) that communicates with the discharge port 48 extends downward from the front end of the conveyance cylinder 46.

  As shown in FIG. 4, the bottom screw 19 and the vertical conveyance unit 41 are connected by a connection case 23. The connection case 23 is fixed to the tank frame body 15. The connection case 23 supports the bottom screw 19 in a state where the grain tank 12 can swing up and down around the axis P. The vertical conveyance unit 41 is supported by the connection case 23 and is stored around the vertical axis Y, with the horizontal conveyance unit 45 positioned above the grain tank 12, and the horizontal conveyance unit 45 is stretched outside the machine body. It is possible to swivel between the discharging posture to be taken out.

  As shown in FIG.1 and FIG.2, the camera 100 which image | photographs the rocking | fluctuation state of the grain tank 12 and the turning state of the grain discharge apparatus 40 is provided. Images (including moving images and still images) taken by the camera 100 are displayed on a monitor (not shown) provided in the cabin 70. In the present embodiment, the camera 100 is provided on the roof portion of the cabin 70, but the installation location of the camera 100 may be another location.

  As shown in FIG. 4 and FIG. 6, a crescent-shaped cylinder bracket 75 is provided on the outer peripheral portion of the vertical conveying portion 41. One end of a turning cylinder 78 that is a hydraulic cylinder is connected to the cylinder bracket 75. The other end of the turning cylinder 78 is connected to the tank frame body 15. When the cylinder bracket 75 is pushed and pulled by the expansion and contraction of the turning cylinder 78, the grain discharging device 40 turns over the discharging posture and the storing posture. The turning cylinder 78 constitutes a turning mechanism SM that turns the grain discharging device 40 around the vertical axis Y so that the discharging port 48 moves in the lateral direction.

  When the grain discharging device 40 is in the discharging posture, the lateral conveyance unit 45 projects to the right lateral outer side of the machine body frame 1. When the grain discharging device 40 is in the retracted position, the lateral conveyance unit 45 is stored in the inner side of the machine body.

  The grain located at the lower end 12 a of the grain tank 12 is conveyed to the front side of the machine body by the bottom screw 19, and is discharged to the connection case 23 from the discharge port 20 formed on the front wall of the grain tank 12. As the grain discharge by the bottom screw 19 proceeds, the grain located on the left end side of the grain tank 12 flows to the lower end 12a. If the grain tank 12 is in the rising posture, the flow of the grain is promoted. The vertical conveyance unit 41 is driven by the driving force of the bottom screw 19, and the horizontal conveyance unit 45 is driven by the driving force of the vertical conveyance unit 41. Then, the grain discharged from the grain tank 12 to the connection case 23 is transported to the horizontal transport unit 45 by the vertical transport unit 41 and transported to the discharge port 48 by the horizontal transport unit 45.

  As shown in FIG. 5, the combine is provided with a swing angle detection unit 9 </ b> A for detecting the vertical swing angle of the grain tank 12. In this embodiment, the swing angle detection unit 9A is used as a first detection unit that detects the posture of the grain tank 12, and includes a three-point link swing link 91 and a swing angle sensor 92. ing. The swing link 91 includes a first link pin 911, a second link pin 912, a third link pin 913, a first link 914, and a second link 915. The first link pin 911 is supported by the wall body 12 b of the grain tank 12 and is connected to one end of the first link 914. The third link pin 913 is supported by the tank frame body 15 and is connected to one end of the second link 915. The second link pin 912 connects the other end of the first link 914 and the other end of the second link 915. When the grain tank 12 swings up and down, the third link pin 913 rotates. The swing angle sensor 92 is attached to the third link pin 913 so as to detect the rotation angle of the third link pin 913.

  As shown in FIG. 6, the combine is provided with a turning angle detection unit 9 </ b> B for detecting the turning angle of the grain discharging device 40. In this embodiment, the turning angle detection unit 9B is used as a second detection unit that detects the posture of the grain discharging device 40, and includes a detection arm 96, an arm rotation shaft 97, and a turning angle sensor 98. Yes. The arm rotation shaft 97 is supported by the connection case 23 as a bearing. A crescent-shaped cam plate 76 extending in the radial direction of the longitudinal axis Y is provided in the vertical conveyance section 41. A part of the circumferential end surface of the cam plate 76 is formed as a cam surface 76a so that the radial distance from the longitudinal axis Y increases in the counterclockwise direction in the circumferential direction in FIG. The base end of the detection arm 96 is fixed to the arm rotation shaft 97 and is urged toward the cam surface 76a by a spring (not shown) so that the tip of the detection arm 96 is always in contact with the cam surface 76a. Has been. The turning angle sensor 98 is attached to the arm turning shaft 97 so as to detect the turning angle of the arm turning shaft 97. When the vertical conveyance unit 41, that is, the grain discharging device 40 is turned by driving the turning cylinder 78, the detection arm 96 is turned together with the arm turning shaft 97, and this turning angle is detected by the turning angle sensor 98 as the turning angle. Is done.

  FIG. 7 shows the remote controller 8. The remote controller 8 is connected to the combine control unit 5 through a communication cable. Of course, if the remote controller 8 and the control unit 5 have a wireless data communication function, data communication can be performed wirelessly. In this embodiment, the remote controller 8 is used to operate the grain tank 12 and the grain discharge device 40.

  The remote controller 8 is detachably mounted in a pocket attached to the rear wall of the cabin 70 as shown in FIGS. In use, the remote controller 8 is taken out by an operator and can be used with one hand.

  The remote controller 8 has a rectangular parallelepiped shape that can be placed on the palm and grasped, and the surface thereof is formed as a rectangular operation surface 80. A cross key 81 is disposed substantially at the center of the operation surface 80. The vertical first piece 82 of the cross key 81 functions as a swing operation unit UD that commands the vertical swing operation of the tank swing mechanism TM. The swing operation unit UD can be used as a swing adjustment operation tool that adjusts the swing position of the grain tank 12 via the tank swing mechanism TM. The second piece 83 in the lateral direction of the cross key 81 functions as a turning operation unit LR that commands the turning operation of the turning mechanism SM. This turning operation part LR can be used as a turning adjustment operation tool for adjusting the turning position of the grain discharging device 40 via the turning mechanism SM.

  The upper end portion 82U of the first piece 82 corresponds to a first swing command contact for instructing the upward swing operation of the tank swing mechanism TM. Dynamic operation is commanded. The lower end portion 82D of the first piece 82 corresponds to the second swing command contact for commanding the downward swing operation of the tank swing mechanism TM, and the lower swing portion is pressed by pushing the lower end portion 82D of the first piece 82. Operation is commanded.

  The left end portion 83L of the second piece 83 corresponds to the first turning command contact that commands the left turning operation of the turning mechanism SM, and the left turning operation is commanded by pressing the left end portion 83L of the second piece 83. . The right end portion 83R of the second piece 83 corresponds to a second turning command contact that commands the right turning operation of the turning mechanism SM, and the right turning operation is commanded by pressing the right end portion 83R of the second piece 83. Is done. Here, “right turn” means that the grain discharging device 40 (lateral transport unit 45) turns rightward about the vertical axis Y (counterclockwise) in the plan view (FIG. 2). The “left turn” indicates that the grain discharging device 40 (lateral transport unit 45) turns (clockwise) to the left of the machine body about the vertical axis Y.

  On the upper surface of the operation surface 80, that is, on the cross key 81 that functions as the swing operation unit UD and the swing operation unit LR, an automatic switch is provided as a device operation unit different from the swing operation unit UD and the swing operation unit LR. 84 and a discharge button 85 are arranged. The discharge button 85 functions as a discharge operation unit that commands a grain discharge operation by the grain discharge device 40.

  The automatic switch 84 gives an automatic operation command for automatically changing the posture of the grain tank 12 by the tank swinging mechanism TM and changing the posture of the grain discharging device 40 by the turning mechanism SM.

  A lamp 86 is disposed on the automatic switch 84 and the discharge button 85, that is, in the vicinity of the upper edge of the operation surface 80. The lamp 86 can notify various information depending on its lighting state (always on, short cycle flashing, long cycle flashing). In particular, a function related to the present invention is a predetermined function in order to inform the operator when the inclination angle of the fuselage is increased and the posture change of the grain tank 12 or the grain discharging device 40 is prohibited. It is blinking with a period. In addition, the lamp 86 notifies, for example, discharge by the grain discharging device 40 by lighting, and swings the grain tank 12 or turns the grain discharging device 40 by short-period flashing or long-period flashing. Is reported, as well as other equipment malfunctions and fuel drops. In FIG. 7, the number of lamps 86 is one, but a plurality of lamps each assigned a role of notification may be provided.

  It should be noted that the switches and buttons for various operations provided in the remote controller 8 described above may be incorporated by disposing an operation panel 800 (see FIG. 8) in the operation unit 7. The same operation can be performed using either the remote controller 8 or the operation panel 800.

  FIG. 8 is a functional block diagram showing functions related to posture change control of the grain tank 12 and the grain discharging device 40 in consideration of the machine body inclination angle in the control unit 5 of the combine. The control unit 5 includes an engine control unit 50, an input signal processing unit 51, a device control unit 52, a tank position calculation unit 53, a discharge device position calculation unit 54, an attitude change control module 55, and a tilt calculation unit 56. The engine control unit 50 outputs a control signal for controlling the rotational speed of the engine E. The device control unit 52 sends various control signals generated by the control unit 5 to various operating devices. The operation equipment particularly related to the present invention includes a notification device which is a ramp 86, a tank swinging mechanism TM, a turning mechanism SM, and a work clutch 13. The work clutch 13 turns on and off the transmission of power from the engine E to work devices such as the reaping unit 4 and the threshing device 11. The control unit 5 can control this power transmission through the work clutch 13.

  In the present embodiment, the engine control unit 50 is executing the grain discharging operation so that the combine does not travel unexpectedly during the grain discharging by the grain discharging apparatus 40. In this case, the engine speed is controlled to be the idling speed. By this control, even if the driver tries to travel, the speed does not increase, and the user is aware that the vehicle is discharging. As a result, while the tank is raised (the supply port of the grain tank 12 and the discharge port of the cerealing device 14 are misaligned), the harvesting operation travels during the grain discharging operation. Thus, the situation that the grain is scattered outside the grain tank 12 without entering the grain tank 12, or the machine body balance that is performing the grain discharging operation with the grain discharging device 40 in the discharging posture is poor. It is possible to prevent a situation such as running in a state.

  Furthermore, in the raised posture state of the grain tank 12, there arises an inconvenience that the balance of the machine body is deteriorated and that the grain conveyed from the threshing device 11 is difficult to be charged into the grain tank 12. From this, when the grain tank 12 is not in the lowered posture, particularly when the grain tank 12 is raised to the maximum, the posture change control module 55 puts the work clutch 13 in the disengaged state via the device control unit 52. maintain.

  An operation signal (operation command) from the operation device and a detection signal from the detection device are input to the input signal processing unit 51, and these signals are transferred from the input signal processing unit 51 to each functional unit of the control unit 5. . The operation device includes an operation panel 800 and a remote controller 8. The detection device includes a swing state detection unit 9A, a turning angle detection unit 9B, an inclination detector 93, a storage amount measuring device 94, an upper sensor 9b, a lower sensor 9a, and other work state detection sensor groups including other sensors and switches. 9 is included.

  The inclination detector 93 is constituted by an inclination sensor attached to the body frame 1 in order to detect the inclination angle of the body. The storage amount measuring device 94 is a sensor that detects the amount of the grain stored in the grain tank 12, and as widely known as such a sensor, a load cell, a proximity sensor, or the like is employed. The upper sensor 9 b is a proximity sensor that detects the grain stored in the upper part of the grain tank 12, and the lower sensor 9 a is a proximity sensor that detects the grain stored in the lower part of the grain tank 12.

  Based on the detection signal from the swing angle detection unit 9A, the tank position calculation unit 53 calculates the swing position of the grain tank 12, that is, the swing posture such as the lowered posture and the raised posture, and outputs it as tank position data. To do. Based on the detection signal from the turning angle detection unit 9B, the discharging device position calculation unit 54 calculates the turning position of the grain discharging device 40, that is, the turning posture such as the storage posture and the discharging posture, and outputs it as discharging device position data. To do. The inclination calculation unit 56 calculates the detection angle of the airframe based on the detection signal from the inclination detector 93, and gives it to the attitude change control module 55.

  The posture change control module 55 outputs control data for changing the posture based on an operation command by the operator regarding the grain tank 12 and the grain discharging device 40. In the present embodiment, the posture change control module 55 includes a determination unit 551, an automatic transition management unit 552, a grain discharge management unit 553, and a discharge tank swing control unit 554. The determination unit 551 evaluates the positional relationship between the grain tank 12 and the grain discharge device 40 created by the posture change of the grain tank 12 or the posture change of the grain discharge device 40 based on the operation command, and the grain tank. 12 and whether or not interference occurs between the grain discharging device 40. When interference occurs, such an operation command becomes invalid.

  When the grain discharging device 40 is in the retracted posture, the automatic transition management unit 552 shifts the grain discharging device 40 to the discharging posture and moves the grain tank 12 on the basis of the automatic operation command given by the automatic switch 84. An automatic discharge transition command for shifting to the ascending posture is output. Further, when the grain discharging device 40 is not in the retracted posture, the automatic transition management unit 552 shifts the grain discharging device 40 to the retracted posture based on the automatic operation command given by the automatic switch 84 and the grain tank 12. The automatic storage command to shift the to the descending posture is output.

  The grain discharge management unit 553 compares the inclination angle calculated by the inclination calculation unit 56 with the set discharge device threshold value and tank threshold value. Furthermore, when the inclination angle exceeds the threshold for the discharging device, the grain discharge management unit 553 invalidates the posture change command from the storage posture to the discharging posture with respect to the grain discharging device 40, and the kernel discharging device 40 The turning from the retracted position to the discharging position is prohibited. Further, when the inclination angle exceeds the tank threshold value, the posture change command for the grain tank 12 from the lowered position to the raised position is invalidated and the swinging of the grain tank 12 from the lowered position to the raised position is prohibited. To do. In this embodiment, the tank threshold value is set smaller than the discharge device threshold value, but may be the same. Further, the discharge device threshold value and the tank threshold value may be configured to be arbitrarily adjustable by the operator instead of a fixed value. Further, the discharge device threshold and the tank threshold may be configured to vary according to the amount of stored kernel measured by the storage measuring device 94. At that time, the larger the stored amount of the grain, the more disadvantageous for the balance of the machine body. Therefore, the larger the stored amount of the grain, the smaller the discharge device threshold and the tank threshold.

  The discharging tank swing control unit 554 executes a temporary vertical swing operation of the grain tank 12 while the grain discharging device 40 discharges the grain from the grain tank 12. Thereby, the offset of the grain stored in the grain tank 12, clogging in the delivery route to the grain discharging device 40, or prevention thereof can be achieved.

Next, an example of a grain discharge management routine for managing permission and prohibition of posture change based on the inclination angles of the grain tank 12 and the grain discharge device 40 will be described with reference to FIG. When entering the grain discharge management routine, from an operation command from the remote controller 8 or the operation panel 800, from a posture change command from the retracted posture to the grain discharge device 40 to a discharge posture or from a lowered posture with respect to the grain tank 12 It is checked whether or not a posture change command to the rising posture is input (# 02). If no posture change command is input (No branch at # 02), this routine is terminated. If a posture change command is input (Yes in # 02), the grain storage amount: Q, which is the measurement result of the storage amount measuring device 94, is acquired (# 04). The grain discharge management unit 553 sets the discharge device threshold value: α1 and the tank threshold value: α2 (# 06, # 08). In the present embodiment, the discharge device threshold value: α1 and the tank threshold value: α2 are calculated according to the acquired grain storage amount: Q. In other words, if the function or lookup table for deriving the threshold value for discharge device: α1 from the grain storage amount: Q is f (),
α1 = f (Q)
The threshold value calculated in is set as the discharge device threshold value. Kernel storage amount: Q Threshold value for tank: A function or lookup table for deriving α2 is g ().
α2 = g (Q)
The threshold value calculated in is set as the tank threshold value. In this embodiment, if the grain storage amount: Q is the same, the threshold value for tank: α2 derives a value smaller than the threshold value for discharge device: α1, f () and g ( ) Has been created.

  Next, the tilt angle θ of the aircraft is acquired from the tilt calculation unit 56 (# 10), and the tilt angle θ and the discharge device threshold value α1 are compared (# 12). If the tilt angle: θ is greater than the threshold value for the discharge device: α1 (Yes in # 12), the posture of the grain discharge device 40 is changed from the retracted posture to the discharge posture, and the posture of the grain tank 12 is lowered from the lowered posture. The posture change is prohibited (# 18), and the determination result is notified visually by the lamp 86 as the notification device or audibly by the buzzer (# 22), and the process returns to step # 02. If the inclination angle θ is equal to or less than the discharge device threshold value α1 (No branch at # 12), the inclination angle θ and the tank threshold value α2 are compared (# 14). If the tilt angle: θ is greater than the tank threshold value: α2 (Yes branch at # 14), that is, the tilt angle: θ falls between the tank threshold value: α2 and the discharge device threshold value: α1. If so, the posture change from the storage posture of the grain discharging device 40 to the discharging posture is permitted, but the posture change of the grain tank 12 is prohibited (# 20). The determination result is notified by the lamp 86 or buzzer which is a notification device (# 22), and the process returns to step # 02. When the inclination angle: θ is equal to or less than the threshold value for tank: α2 (No branch at # 14), the posture change of the grain discharging device 40 and the grain tank 12 is permitted (# 18), and the determination result is The notification is made by the lamp 86 or the buzzer as a notification device (# 22), and the process returns to step # 02.

  In the present embodiment, the directionality of the tilt angle is considered to be the left-right direction of the combine aircraft, but both the left-right tilt angle and the front-rear tilt angle of the aircraft may be considered. . In that case, the tilt angle: θ is considered by dividing into the tilt angle in the left-right direction of the aircraft: θx and the tilt angle in the front-rear direction of the aircraft: θy, and the discharge device threshold value: α1 is for the discharge device Left-right direction threshold value: α1x and discharge device front-rear direction threshold value: α1y, tank threshold value: α2 is tank left-right direction threshold value: α2x and tank front-rear direction threshold value: It is divided into α2y. The horizontal inclination angle of the machine body: θx is compared with the left and right threshold value for discharge device: α1x and the left and right threshold value for tank: α2x, and the posture change of the grain discharge device 40 and the grain tank 12 is permitted. And prohibited. The tilt angle of the longitudinal direction of the machine body: θy is compared with the longitudinal threshold value for discharge device: α1y and the longitudinal threshold value for tank: α2y, and the posture change of the grain discharge device 40 and the grain tank 12 is permitted. And prohibited.

  Next, with reference to FIG. 10 and FIG. 11, a temporary vertical swing operation of the grain tank 12 by the discharging tank swing control unit 554 will be described. As shown in FIG. 10, a roof-like grain flow guide plate 18 is provided above the bottom screw 19 disposed at the lower end 12 a of the grain tank 12. Further, a lower sensor 9a, which is a proximity sensor that detects the presence of a grain, is disposed in the vicinity of the grain flow guide plate 18, and a proximity sensor that similarly detects the presence of a grain is provided above the grain tank 12. An upper sensor 9b is arranged. The grain flow guide plate 18 is for smoothly carrying out the grain by the bottom screw 19. However, clogging (bridge) of the grain may occur between the inner wall of the grain tank 12 and the grain flow guide plate 18. Moreover, clogging or catching of grains may occur due to some factors other than between the inner wall of the grain tank 12 and the grain flow guide plate 18. Such clogging of grains can be eliminated by swinging the grain tank 12. As shown in FIG. 11, the clogging of the grain flow into the bottom screw 19 is detected by the upper sensor 9b even though the lower sensor 9a does not detect the grain. That is recognizable. Therefore, on condition that the lower sensor 9a does not detect the grain and the upper sensor 9b detects the grain, the discharging tank swing control unit 554 swings the grain tank 12 through the tank swing mechanism TM. . In FIG. 10, only one lower sensor 9a and one upper sensor 9b are shown, but a plurality of them may be prepared. The combination of these sensor signals can detect clogging and clogging with high accuracy. This swinging may be performed by raising or lowering several degrees, or repeating up and down movement in a minute angle range. Temporary stoppage of the rocking may be executed according to the detection of the grain by the lower sensor 9a, the time, the angle, and the number of vertical movements.

  Furthermore, the above-mentioned clogging of the grains is likely to occur in the early stage of the discharging operation (when discharging is started by the bottom screw 19, the grains around the upper edge of the space vacated by discharging are caused by the weight of the upper kernel. In order to prevent this initial clogging in advance, the upper sensor 9b has changed from detecting the grain to not detecting it (the signal that the discharging operation has started) At the time of discharge), the discharging tank swing control unit 554 executes temporary swing of the grain tank 12.

  By the swing control of these grain tanks 12 by the discharge tank swing control unit 554, not only the clogging of the grains is eliminated, but also the flow of the grains to the bottom screw 19 side in the grain tank 12 is promoted. In the case where the grain is caught on the bottom of the grain tank 12, it can be expected to eliminate the catch of the grain.

[Another embodiment]
(1) In the above-described embodiment, for both the grain discharging device 40 and the grain tank 12, it is determined that the posture change is prohibited based on the tilt angle of the machine body. The posture change prohibition based on the above may be implemented.

(2) In the above-described embodiment, the lower sensor 9a and the upper sensor 9b are provided separately from the storage amount measuring instrument 94. When the storage amount measuring device 94 is composed of a plurality of proximity sensors having different height positions in the grain tank 12, some of the plurality of proximity sensors are also used as the lower sensor 9a and the upper sensor 9b. Also good.

(3) In the above-described embodiment, an example is shown in which the detection by the upper sensor 9b and the non-detection of the grain by the lower sensor 9a are the swing conditions of the grain tank 12 by the discharge tank swing control unit 554. However, when the lower sensor 9a is changed from the state of detecting the grain to the state of not detecting the grain, the discharge tank swing control unit 554 executes the swing of the grain tank 12. It may be configured. In this case, it is possible to prevent the grain from being clogged and the grain from being caught at the bottom of the grain tank 12 at the end of the discharge.

(4) In the above-described embodiment, the remote controller 8 is a dedicated product, but instead of this, by installing an appropriate application on the smartphone or tablet computer, the smartphone or tablet computer can be connected to the remote controller of the present invention. It may be used as the operation device 8.

(5) In the above-described embodiment, the grain tank 12 is configured to be able to swing up and down around the horizontal axis P extending in the longitudinal direction of the machine body, but the present invention is not limited to this. The direction in which the horizontal axis P extends may be the left-right direction of the machine body. In this case, the grain tank 12 is configured to be vertically swingable about the horizontal axis P extending in the left-right direction of the machine body.

  INDUSTRIAL APPLICABILITY The present invention can be used for a combine having a grain tank and a grain discharging device. It is also applicable to.

12: Grain tank 13: Work clutch 18: Grain flow guide plate 19: Bottom screw 40: Grain discharging device 41: Vertical conveyance unit 45: Horizontal conveyance unit 5: Control unit 50: Engine control unit 51: Input signal processing Unit 52: Device control unit 55: Posture change control module 553: Grain discharge management unit 554: Discharge tank swing control unit 56: Inclination calculation unit 9: Work state detection sensor group 9a: Lower sensor 9b: Upper sensor 93: Tilt detector 94: Storage amount measuring device E: Engine SM: Turning mechanism TM: Tank swinging mechanism

Claims (9)

A threshing device for threshing the harvested cereals harvested by the harvesting unit;
A grain tank for storing the grain obtained by the threshing device;
An airframe on which the engine, the threshing device, and the grain tank are mounted;
The grain tank having a vertical conveyance unit coupled to the grain tank, a horizontal conveyance unit coupled to an upper end of the vertical conveyance unit, and a discharge port formed at a tip of the horizontal conveyance unit; A grain discharging device for discharging the grain stored in the outlet from the outlet,
A turning mechanism for turning the grain discharging device around a vertical axis between a storage posture in which the discharge port enters the body in a plan view and a discharge posture in which the discharge port exits the body in a plan view;
An inclination detector for detecting an inclination angle of the airframe;
When the inclination angle exceeds the threshold for the discharging device, a kernel discharge management unit that prohibits turning of the kernel discharging device from the stored posture to the discharging posture;
Combine with. A tank swinging mechanism for swinging the grain tank up and down between a descending posture and an ascending posture around a horizontal axis;
The combine according to claim 1, wherein the grain discharge management unit prohibits the swinging of the grain tank from the lowered position to the raised position when the tilt angle exceeds a tank threshold value.   The combine according to claim 2, wherein the tank threshold is smaller than the discharge device threshold.   A work clutch for turning on and off the transmission of power from the engine to a work device including the mowing unit and the threshing device is provided, and when the grain tank is not in the lowered position, the operation of the work clutch is prohibited. The combine according to claim 2 or 3.   5. The discharging tank swing control unit for performing a temporary up and down swinging operation of the grain tank during the grain discharging by the grain discharging device is provided. Combine as described. A storage amount measuring device for measuring a grain storage amount in the grain tank is provided,
The combine according to claim 5, wherein the discharging tank swing control unit performs the up and down swing operation in accordance with the grain storage amount.   The combine according to any one of claims 1 to 6, wherein the number of revolutions of the engine is set to an idling number of revolutions during grain ejection by the grain ejection device. The discharge device threshold is changed based on a grain storage amount in the grain tank,
The combine according to any one of claims 1 to 7, wherein the discharge device threshold value decreases as the grain storage amount increases.   The combine according to any one of claims 1 to 8, wherein an alarm is notified when the inclination angle exceeds a discharge device threshold.

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