JP2014117243A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester having an image display monitor with an excellent operability, thereby to improve a working property.SOLUTION: A combine harvester comprises: an image display monitor M mounted on a drive area O and capable of splitting and displaying a plurality of images in one image plane; a forward camera C1 disposed at the front portion of a machine body for photographing the forward image of the machine body; a grain discharge auger camera C2 disposed in the upper portion of the machine body for photographing an image of the leading end portion of a grain discharge auger 13; and a backward camera C3 disposed at the back of the machine body for photographing the backward image of the machine body. The image display monitor M includes an image changeover mechanism S for displaying images taken for a work object containing the forward image of the machine body by the forward camera C1; the image of the leading end portion of the grain discharge auger 13 by the grain discharge auger camera C2; and the backward image of the machine body by the backward camera C3, and capable of changing into one image displaying the work in accordance with the object of the work. This image changeover mechanism S is equipped with a preference mechanism P for controlling the changeover of the object image in accordance with the work situation.

Description

  The present invention provides an image display monitor provided on the control unit capable of displaying a plurality of images divided on one screen, a front camera provided on the front part of the aircraft for capturing images in front of the aircraft, and provided on the upper part of the aircraft. And a grain discharge auger camera that captures an image of the tip of the grain discharge auger, and a rear camera that captures an image of the rear of the machine, provided at the rear of the machine. Displays an image of the work target including an image of the front of the machine, an image of the tip of the grain discharge auger by the grain discharge auger camera, and an image of the rear of the machine by the rear camera. More specifically, the image switching mechanism relates to a combine provided with a priority mechanism that controls switching of a target image in accordance with a work situation.

  Some conventional combiners allow an operator to check the state of the outside of the machine from the inside of the piloting unit using an image display monitor provided in the piloting unit using a camera installed on the vehicle body. As an example, in relation to switching between the work traveling speed and the road traveling speed of the traveling transmission device, the monitoring direction of the side monitor camera is changed to the cereal conveyance from the cereal conveying apparatus of the cutting and conveying unit to the feed chain of the threshing unit. Regardless of the state in which the state can be monitored and the state in which the sides of the combine on the left and right sides of the combine can be seen can be changed (for example, Patent Document 1), and the work photographing means. When the traveling transmission device is operated to the forward position or the neutral position, the image photographed by the working photographing means is displayed on the display means, and the reverse drive is performed. When operated in the position, a reverse mode in which the video captured by the rear photographing means is displayed on the display means is set, and the work mode and the reverse mode can be switched (example: Situ Patent Document 2), and the like.

JP 2005-168324 A JP 2006-176708 A

However, in such a combine, the display screen of the image display monitor in the control unit can be switched to an image at a necessary position depending on the work situation. When the vehicle is running even slightly by operating the main speed change operation member to adjust the position of the vehicle body while discharging the grain, the image display monitor will move forward or backward from the image of the tip of the grain discharge auger. Since the image is automatically switched to the image, the operator switches to the discomfort caused by sudden screen change or the original work screen (in this case, the image of the tip of the grain discharge auger) each time. There is a problem that the operation is required and the operability is poor and the workability is lowered.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a combine having an image display monitor with excellent operability and improved workability.

  For this reason, the invention according to claim 1 is an image display monitor provided in the control unit and capable of dividing and displaying a plurality of images on a single screen, and a front side provided in the front part of the aircraft for taking an image of the front of the aircraft. A camera, a grain discharge auger camera for capturing an image of the tip of the grain discharge auger provided at the top of the body, and a rear camera for capturing an image of the rear of the body provided at the rear of the body; In the image display monitor, a work object including an image of the front of the machine body by the front camera, an image of the tip of the grain discharge auger by the grain discharge auger camera, and an image of the rear of the machine body by the rear camera was photographed. In a combine including an image switching mechanism that displays an image and can switch to one image that displays the work according to a work target, the image switching mechanism includes a priority mechanism that controls switching of the target image according to a work situation. And wherein the digit.

  According to a second aspect of the present invention, in the combine according to the first aspect, the priority mechanism links the main speed change operation member and each of the cameras, and the image display monitor is connected to the tip of the grain discharge auger. When an image is being displayed and the main speed change operation member is operated within a predetermined time, the image display monitor preferentially displays the image of the tip of the grain discharge auger.

  According to a third aspect of the present invention, in the combine according to the first aspect, the priority mechanism links the main speed change operation member and each of the cameras, and the image display monitor is connected to the tip of the grain discharge auger. When the image is being displayed and the main shift operation member is operated within a predetermined time, the plurality of work images are preferentially displayed on the image display monitor.

  According to the first aspect of the present invention, an image display monitor provided on the control unit and capable of displaying a plurality of images divided into one screen, and a front camera provided on the front of the aircraft for capturing an image in front of the aircraft And a grain discharge auger camera provided at the top of the machine for taking an image of the tip of the grain discharge auger, and a rear camera provided at the rear of the machine for taking an image of the rear of the machine. On the monitor, an image of the front of the machine body by the front camera, an image of the tip of the grain discharge auger by the grain discharge auger camera, and an image of the work target including an image of the rear of the machine body by the rear camera are displayed. In a combine including an image switching mechanism that can switch to one image that displays the work according to the work target, the image switching mechanism is provided with a priority mechanism that controls switching of the target image according to the work situation. By When an image to be worked according to vehicle operation is displayed on a single screen on an image display monitor, for example, angle adjustment of a grain discharge auger mainly during vehicle travel, vehicle position adjustment mainly during grain discharge, etc. Even if an operation other than the main work is performed, the image of the main work target can be preferentially displayed on the image display monitor. There is no need to change the screen each time, and the operation can be performed safely and reliably while looking at the image display monitor. Therefore, a combine with improved operability and workability can be provided.

  According to the invention described in claim 2, the priority mechanism links the main speed change operation member and each camera, and the image display monitor is displaying an image of the grain discharge auger tip, and the main speed change operation When the member is operated within a predetermined time, the image display monitor preferentially displays the image of the tip of the grain discharge auger, so that the main position is adjusted for vehicle position during the grain discharge by the grain discharge auger. When the shift lever is operated to move the vehicle forward or backward, if the main shift lever is operated within a predetermined time, the image display monitor will not switch to the front or rear image of the vehicle, and Since the image remains as it is, the operator does not have the discomfort due to the sudden screen change and does not need to change the screen each time, and can work safely and reliably while looking at the image display monitor. Therefore, a combine with improved operability and workability can be provided.

  According to the invention described in claim 3, the priority mechanism links the main speed change operation member and each camera, and the image display monitor is displaying an image of the tip of the grain discharge auger, and the main speed change operation When a member is operated within a predetermined time, a plurality of work images are preferentially displayed on the image display monitor, so the main speed change lever is operated to adjust the position of the vehicle during the grain discharge by the grain discharge auger. If the main shift lever is operated within a predetermined time when the vehicle is moved forward or backward, the image display monitor includes a plurality of images including the tip of the grain discharge auger without switching to the front or rear image of the vehicle. Therefore, the operator can always see the necessary image on the image display monitor, and can work safely and reliably. Therefore, a combine with improved operability and workability can be provided.

It is the left view which showed an example of the combine which concerns on this invention. It is a left view of a cereal conveyance apparatus. It is a left side schematic diagram of a threshing part and a selection part. It is a right view of a combine explaining a camera arrangement. It is a perspective view of a control part provided with the image display monitor in a combine. It is a control block diagram of the image monitor by a controller provided with an image switching mechanism and a priority mechanism. FIG. 10 is a flowchart for explaining processing of a priority mechanism for displaying an image of a desired work position on an image display monitor with priority over other work images. It is a flowchart explaining the process of the priority mechanism for displaying an image of a desired work position on any screen as a plurality of screens of the image display monitor. It is explanatory drawing which shows the screen of the image display monitor before and behind operation of the main transmission operation member in FIG. It is explanatory drawing which shows the screen of the image display monitor before and behind operation of the main transmission operation member in FIG. 8 at the time of attaching a grain discharge auger camera to the roof bottom face of a cabin upper front end.

The best mode for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a right side view of a combine as an example of the present invention, FIG. 2 is a left side view of a grain feeder, and FIG. 3 is a schematic left side view of a threshing unit and a sorting unit.

  First, as shown in FIGS. 1 to 3, the combine 1 is provided with a traveling unit 3 that is a pair of left and right crawler traveling devices on a pair of left and right body frames 2, and a machine base 4 is mounted on these left and right body frames 2. It will be erected. Further, on the machine base 4, a threshing device 7 including a pulling mechanism 8, a cutting blade 9, and a harvested product conveying means 10, and a feed chain 18 is stretched on the left side of the machine body and a handling cylinder 6 is built in. A certain threshing unit 5, a slaughter processing unit 11 that faces the end of the sewage chain, a glen tank 12 that carries in a mash from the threshing unit 5 via a milling cylinder, and a gutter from this glen tank 12 is carried out of the machine. A grain discharge auger 13 or the like as the transport unit 16 is installed.

  Further, on the machine base 4 at the front of the machine body, a control unit O (having a cabin 16 in the illustrated example is not limited) having a handle 14 and a driver's seat 15, and an engine (motor) is provided below the driver's seat 15. ) E, transmission T, etc. are provided, and by these configurations, the combine 1 is configured to continuously harvest and thresh crops such as rice.

  A vertical auger 13a of a grain discharge auger 13 for discharging the straw in the Glen tank 12 to the outside is erected at the rear of the machine base 3, and a horizontal auger is provided at the upper end of the vertical auger 16a. 13b is continuously provided. With this vertical auger 13a as the center, the Glen tank 12 is provided so as to be able to turn left and right, and the front side of the Glen tank 12 can be rotated outward to be opened. In addition, a cereal conveyance device 17 is provided in the rear part of the machine base 3 continuously to the threshing unit 5.

  The cereals harvested by the reaping unit 7 are conveyed to the rear by the harvested product conveying means 10, and the stocker side is inherited from the upper end of the harvested product conveying means 10 to the feed chain 18 of the cultivated item conveying device 17, and the handling cylinder 6 The cereal meal is transported into the threshing apparatus comprising the threshing section 5 and the sorting section 19 through the supply start end. A waste transport chain 20 is disposed at the rear end of the feed chain 18, and a waste processing section (not shown) made up of a cutter, a binding machine and the like is formed below the rear of the waste transport chain 20, After cutting into pieces, it is released uniformly into the field while diffusing, or released without cutting.

  The threshing unit 5 is arranged on the left side in the traveling direction of the combine 1, and the grain tank 12 for storing the refined grains after sorting is arranged on the right side of the threshing unit 4. A driver seat 15 is disposed in front of the Glen tank 12. That is, the driver's seat 15 is disposed at the right front portion in the traveling direction of the aircraft. On the other hand, a vertical auger 13a of a grain discharge auger 13 is erected on the rear side of the grain tank 12, and the grain discharge auger 13 and the grain tank 12 can be rotated laterally around the vertical auger 16, Maintenance of the inside of the machine body is facilitated by rotating the tank 12 to the side.

  A discharge conveyor 12a, which will be described later, is arranged in the front-rear direction at the bottom of the Glen tank 12, and the rear part of the discharge conveyor communicates with the lower part of the vertical auger 13a and the grain discharge auger 13 from the rear part of the discharge conveyor 16 The power is transmitted to the grain tank 12 so that the grain in the grain tank 12 can be discharged from the tip of the horizontal auger 13b to a truck or the like. Further, below the threshing unit 5, a sorting unit 19 is arranged to sort the grains from grains and swarf flowing down from the threshing unit 5, and to transport the refined grains to the glen tank 12, Etc. are discharged outside the machine.

  In the above-mentioned threshing unit 5, the cereal conveying device 17 is for conveying while squeezing one end (stock source side) of the harvested cereal, and rejecting and conveying the cereal harvested by the reaping unit 7. A feed chain 18 that conveys the chain 20, a clip 21 that is disposed above the feed chain 18 and clamps the cereal that is being conveyed, and a plurality that elastically supports the clamp 21 with respect to the machine side The elastic support 22 and the like.

  In this cereal transporting device 17, the stocker side of the cereal harvested by the reaping part 7 is sandwiched between the opposingly arranged squeegee 21 and the feed chain 18, and the handling cylinder 6 in the handling chamber 31 is used. It is configured to thresh, and a portion where the pinch 21 and the feed chain 18 face each other is used as a conveyance path. Then, the waste that has been shed by the threshing unit 5 is passed to the waste transport chain 20 at the rear end (downstream end) of the feed chain 18, and the waste transport chain 20 causes the waste to be removed. It is conveyed to the processing unit.

  The clamp 21 is provided by a support rod 24 fixed by a stay 23 and the like, and elastically supported by the support rod 24 via a plurality of elastic supports 22. The clamp 21 has a shape in which a pair of plate-like members are arranged in parallel to the left and right along the feed chain 18, and is formed in a reverse U-shape when viewed in the conveying direction by the feed chain 18. .

  The support rod 24 is a hollow columnar member, and is formed so as to be long in the front-rear direction on the left side in the handling chamber cover (not shown) and to be arranged in parallel with the pinching rod 21. On the side surface of the support rod 24, the elastic support 22 is arranged at regular intervals while the upper portion thereof is supported and disposed, and the clamp 21 is elastically supported on the lower portion of the elastic support 22. . The lower part of the elastic support 22 is pivotally supported by the pin 21 with a connecting pin, and the upper part of the elastic support 22 extends above the support bar 24.

  Next, the threshing unit 5 will be described. As shown in FIG. 3, the handling chamber 31 formed in the threshing section 5 is provided with a substantially cylindrical handling cylinder 6 that is pivoted in the front-rear direction of the machine body. The teeth 32 are implanted. A semicircular receiving net 33 is detachably provided so as to cover the lower periphery of the barrel 6.

  On the other hand, the feed chain 18 restrains the stock side of the grain straw while the tip side of the grain straw is inserted below the barrel 6 and the grain straw is conveyed to the rear of the machine body. At this time, threshing is performed by rotation of the barrel 6 so that grains, sawdust and the like leak from the receiving net 33.

  Next, the selection unit 19 will be described. The sorting unit 19 performs swing sorting by the swing sorting device 41 and wind sorting by the Kara 42, and is sorted into the first thing, the second thing, the sawdust, and the like.

  The swing sorting device 41 is housed in the machine casing 43. A front end portion of the swing sorting device 41 extends to a position below the front end portion of the handling cylinder 6, and a swing shaft (not shown) is provided at the front lower portion of the swing sorting device 41, and a swing described later is provided at the rear portion. A drive mechanism 44 is provided, and the swing drive mechanism 44 is configured to swing the swing sorting device 41 with respect to the machine frame 43. A fuel tank (not shown) is disposed below the swing drive mechanism 44.

  At the front portion of the swing sorting device 41, a drifting grain plate 45 is provided, and a conveying plate 46 is provided below and below the drifting grain plate 45. These cereal plates 45 and conveying plates 46 are formed by corrugating plate-like members, and the processed material (mixture with grains and swarf etc.) that has passed through the receiving net 33 is the cereal plate 45 and It falls onto the transport plate 46 and is transported to the rear of the machine body by the swing of the swing sorting device 41.

  A net-like grain sieve (sieving device) 47, which is a second sorting unit, is connected to the rear of the transport plate 46, and above the grain sheave 47 and the transport plate 46 and behind the cereal plate 45. A chaff sheave 48, which is a first sorting unit, is mounted. Further, a stroller 49 is disposed behind the chaff sheave 48.

  The chaff sheave 48 is composed of a plurality of chaff fins, and can adjust the opening degree of the chaff fins according to the amount of the processed material to be input. That is, the upper and lower end portions of the chaff fin are pivotally supported by the swing sorting device 41 and are pivotally connected to swing plates provided on the left and right sides of the chaff sheave 48, and the other end portions are provided on the left and right sides of the chaff sheave 48. It is pivotally connected to a sliding plate (not shown) provided.

  The sliding plate is swung integrally with the swing sorting device 41, and an adjusting lever (not shown) is pivotally connected to the sliding plate, and the loosening of a wire (not shown) connected to the adjusting lever is relaxed. Alternatively, the sliding plate is slid back and forth by traction. The adjustment lever is urged in a direction to make the inclination angle of each chaff fin small (lay down) by a spring (not shown) provided on the opposite side of the wire.

  Then, the angle of the chaff fin is changed by sliding of the sliding plate, and when the inclination angle of the chaff fin is made large (standing), the amount of leakage of the grains is increased by increasing the opening of the chaff sheave 48, When the inclination angle of the chaff fin is made small (sleeps), the opening of the chaff sheave 48 is made small so that the amount of grain leakage is reduced.

  Thus, the grains and fine swarf fall down through the chaff sheave 48, and swarf and the like larger than the opening of the chaff sheave 48 are conveyed backward. At this time, an air flow from the front to the rear of the sorting unit 19 is generated between the chaff sheave 48 and the grain sheave 47 by the tang koji 42, and a part of the fine swarf is blown back and separated from the grains. The

  In addition, a red pepper 42 is disposed below the front part of the front grain board 45 and below the front part of the rear grain board 46 in the swing sorting device 19 so as to blow the sorting air to the chaff sheave 48 and the grain sheave 47.

  In the vicinity of the rear end portion of the swing sorting device 41, a suction fan 50 is installed across the entire width, and sucks dust that has been carried on the flow of sorting wind supplied from the Karatsu 42, dust generated during threshing, and the like. The air is sucked by the fan 50 and discharged out of the apparatus.

  In the process in which the mixture of grains, shoots adhering grains, immature grains and fine swarf that have been thrown into the sorting unit 19 and leaked onto the front-flow grain board 45 is leaked onto the chaff sheave 48, Due to the air flow from the front to the rear of the sorting unit 19 generated by the tang 42, a part of the fine sawdust is blown away backward.

  Then, the mixture of grains, shoots adhering grains, immature grains and fine shavings that have leaked onto the chaff sheave 48 is conveyed rearward by the swinging of the swing sorting device 41. At this time, these grains Grains, immature grains, shoots adhering grains, fine swarf, etc. fall below the opening of the chaff sheave 48, and large swarf is transported to the rear of the chaff sheave 48 and is discharged out of the machine through the stroller 49. The

  In addition, the grains, the immature grains, the shoots adhering grains, the fine shavings, and the like that have dropped below the opening of the chaff sheave 48 are leaked onto the backflow grain plate 46 and the grain sieve 47. At this time, a part of the fine swarf is blown away and separated by the sorting air from the tang 42.

  Further, among the grains, immature grains, shoot adhering grains, and fine swarf leaked on the grain sieve 47, the grain, immature grain, fine swarf, etc. pass through the grain sieve 47 and move downward. Fall. At this time, the heaviest grain (first) is collected by the first collecting unit 51 and is conveyed from the first conveyor 51a, which will be described later, to the grain tank 12 through a cereal conveyor (not shown).

  On the other hand, unprocessed grains mixed with immature grains with a small weight, a part of fine swarf, spiked grains, grains, etc. are blown rearward by the sorting wind from the Karatsu 42 and collected in the second collecting section 52. Then, the second conveyor 52a, which will be described later, passes through a second reduction conveyor (not shown), and is re-introduced onto the upstream cereal board 45 (or the chaff sheave 48).

  Next, an image switching mechanism provided with a priority mechanism in an image monitor for monitoring the work status with video will be described. FIG. 4 is a right side view of the combine for explaining the camera arrangement, FIG. 5 is a perspective view of a control unit including an image monitor in the combine, and FIG. 6 is a control block diagram of the image monitor by a controller including an image switching mechanism and a priority mechanism. .

  In the combine 1 of the present application, as shown in FIG. 4, cameras C1, C2, and C3 are installed on the machine body so that an operator can monitor the work situation outside the machine from inside the control unit O. The installation positions of these cameras C1, C2, and C3 are, for example, the front part of the vehicle body, and the front end of the cabin 16 above the harvesting part 7 is in front of the vehicle (the cereal planting state in the field or the harvesting part 7 by the harvesting part 7). A front camera C1 that captures the state (including the state) is installed.

  Further, for example, at the front part of the grain discharge auger 13, a grain discharge auger camera C <b> 2 that captures a state below the grain discharge auger 13 tip discharge port (the state of grain discharge) is installed, and the vehicle body A rear camera C3 that captures the state behind the vehicle is installed at the upper rear end. The cameras C1, C2, and C3 are not limited to the installation positions described above.

  These cameras C1, C2, and C3 are connected to an image display monitor M installed in the control unit O as shown in FIG. 5 via the controller C. An operator in the control unit O The monitor M can monitor the state outside the machine (the grain discharge state below the outlet at the front and rear direction of the vehicle and the grain discharge auger 13).

  As shown in FIG. 6, the controller C is connected to the cameras C1, C2, and C3 described above, and is installed in the control unit O and controls the traveling (forward / reverse travel and speed) of the vehicle. A speed change operation member L (main speed change lever) is connected.

  An image switching mechanism S is interposed between the controller C and the image monitor M, and a priority mechanism P is provided in the image switching mechanism S.

  The image switching mechanism S displays the captured images of the cameras C1, C2, and C3 corresponding to the cameras C1, C2, and C3 on the image monitor M according to the operation position of the main transmission operation member L. In order to move forward, the main transmission operating member L is moved forward (detecting the rotational position of the main transmission operating member L using a known technique such as a potentiometer) or the vehicle is moved a predetermined distance (for example, a rotation detector installed on an axle or the like) When the movement distance is detected by a known technique and this detector is connected to the controller C), an image of the front camera C1 that captures the front of the vehicle is displayed on the image monitor M.

  Further, when the main speed change operation member L is set to the reverse drive position in order to reverse the vehicle, an image of the rear camera C3 that captures the rear of the vehicle is displayed on the image monitor M. Further, when the main transmission operating member L is set to the neutral position or / and the low-speed forward position, an image of the grain discharge auger camera C2 for photographing the tip of the grain discharge auger 13 is displayed on the image monitor M. .

  In the present invention, a priority mechanism P is provided in the image switching mechanism S. The priority mechanism P is a preset maintenance time or a preset vehicle movement at the rotation position of the main transmission operating member L. Depending on the distance, the camera image at the position corresponding to the work image desired by the worker is displayed on the image monitor M with priority over other images.

  As a specific example, when the main shift operating member L is kept at the forward position for 3 seconds (hereinafter not limited) or more than 1 m (hereinafter not limited) or longer, the front monitor is displayed on the image monitor M. When the image of C1 (vehicle forward image) is displayed and the main shift operation member L is kept in the reverse position for 3 seconds or longer or the vehicle is in the reverse position for 1 meter (hereinafter not limited), the vehicle is moved backward. An image of the rear camera C3 (vehicle rear image) is displayed.

  Further, for example, in a series of cutting operations, the progress of the vehicle is temporarily stopped, and the grains in the grain tank 12 are discharged from the grain discharge auger 13 into the transport vehicle. Is in the neutral position, the image monitor M displays an image of the tip of the grain discharge auger 13 by the grain discharge auger camera C2.

  However, in order to discharge the grain in the grain tank 12 by the grain discharge auger 13 while performing the cutting operation by intermittently moving the vehicle forward, the main transmission operating member L is temporarily moved to the forward position to move the vehicle over a short distance. In the past, although the operator wants to monitor the image of the tip of the grain discharge auger 13 with the image monitor M, the image of the front camera C1 (vehicle front image) is displayed on the image monitor M. It had been.

  For this reason, the priority mechanism P of the present application rotates the main speed change operation member L from the neutral position to the forward position, and the maintenance at the forward position is returned to the neutral position within 3 seconds. An image of the tip of the grain discharge auger 13 by the grain discharge auger camera C2 is displayed with priority over the image of the camera C1 (vehicle front image).

  Thereby, the operator can work safely and reliably while looking at the image monitor M without having to feel uncomfortable due to a sudden screen change of the image monitor M or having to change the screen each time.

  Hereinafter, details of the priority mechanism P of the image switching mechanism S in the controller C will be described. FIG. 7 is a flowchart for explaining processing of a priority mechanism for displaying an image at a desired work position on the image display monitor M in preference to other work images.

  As shown in FIG. 7, the priority mechanism P (controller C) proceeds to step 2 if a main power source (not shown) provided in the control unit O or the like is turned on in step s1, and in this step 2, the image display monitor If the photographed image of the front camera C1 is displayed on M, the process proceeds to Step 3. In step 3, when the operation member of the grain discharge auger 13 installed in the control unit O or the like is operated, the process proceeds to step 4. In step 4, the grain discharge auger 13 is displayed on the image display monitor M. If the tip image is displayed, the process proceeds to step s5. When the main transmission operating member L is operated in step 5, the process proceeds to step s6.

  Next, in step s6, the priority mechanism P operates the main speed change operation member L within a predetermined time (for example, 3 seconds) (turns from the neutral position to the forward / reverse position and returns to the neutral position within 3 seconds) or the vehicle. If the travel distance is 1 m or less, the image display monitor M preferentially displays the image of the tip of the grain discharge auger 13 by the grain discharge auger camera C2.

  Note that the priority mechanism P determines that the main speed change operation member L of the main speed change operation member L is in the case where the main speed change operation member L is operated for a predetermined time (for example, 3 seconds) or the travel distance of the vehicle exceeds 1 m. The front or rear image of the vehicle by the front camera C1 or the rear camera C3 is displayed on the image display monitor M according to the rotational position (forward or reverse) or the moving distance of the vehicle.

  A plurality of screens can be divided and displayed on the image display monitor M. FIG. 8 is a flowchart for explaining the processing of the priority mechanism for displaying an image of a desired work position on any screen as a plurality of screens of the image display monitor, and FIG. 9 is a diagram before and after the operation of the main transmission operating member in FIG. It is explanatory drawing which shows the screen of an image display monitor.

  In this case, as shown in FIG. 8, the priority mechanism P proceeds to step 2 if the main power supply (not shown) provided in the control unit O or the like is turned on in step s1, and in this step 2, the priority mechanism P proceeds to FIG. As shown, if the captured images of all the cameras C1, C2, C3 (in this case, the front camera C1, the grain discharge auger camera C2, and the rear camera C3) are divided and displayed on the image display monitor M, the process proceeds to step s3. . When the operation member of the grain discharge auger 13 installed in the control unit O or the like is operated in step s3, the process proceeds to step s4. In this step s4, the grain is displayed on the image display monitor M as shown in FIG. If an image at the tip of the discharge auger 13 is displayed, the process proceeds to step s5. When the main transmission operating member L is operated in step s5, the process proceeds to step s6.

  Next, in step s6, the priority mechanism P operates the main speed change operation member L within a predetermined time (for example, 3 seconds) (turns from the neutral position to the forward / reverse position and returns to the neutral position within 3 seconds) or the vehicle. If the travel distance is 1 m or less, the image display monitor M directly displays the image of the tip of the grain discharge auger 13 by the grain discharge auger camera C2.

  The priority mechanism P operates the main speed change operation member L in step s6 if the main speed change operation member L is operated for a predetermined time (for example, 3 seconds) or the travel distance of the vehicle exceeds 1 m. The image display monitor M displays images of the front and / or rear of the vehicle by the front camera C1 and / or the rear camera C3 according to the position (forward or reverse) or the moving distance of the vehicle.

  In step s6, if another operating member other than the grain discharge auger 13 or a predetermined time elapses, the process returns to step s2 via step s1, and the image display monitor M includes all the cameras C1, C2, C3. The captured image by is divided and displayed on a plurality of screens.

  With such a configuration, when the main shift operation member L is operated to adjust the position of the vehicle and the vehicle is moved forward or backward during the grain discharge by the grain discharge auger 13, the main shift within a predetermined time is reached. If the operation of the speed change operation member L, the image display monitor M is switched to a screen in which a plurality of images including the image of the tip of the grain discharge auger 13 are divided and displayed without switching to the front or rear image of the vehicle. The operator can always see the necessary image on the image display monitor M, and can work safely and reliably.

  Note that the grain discharge auger camera C2 is not limited to the installation of the front part 13 as described above. For example, the grain discharge auger 13 tip (the state of grain discharge) is provided on the roof bottom of the upper front end of the cabin 16. You may install the grain discharge auger camera C2 'which image | photographs a mode. The captured image in this case is illustrated in FIG.

As described above in detail, the combine 1 of this example is configured to display a plurality of images provided in the control unit O as 1
An image display monitor M that can be divided and displayed on the screen, a front camera C1 that is provided at the front of the aircraft, and that captures an image of the front of the aircraft, and an image of the tip of the grain discharge auger 13 that is provided at the top of the aircraft. It includes a grain discharge auger camera C2 to be photographed and a rear camera C3 provided at the rear part of the machine to photograph an image of the rear of the machine. The image display monitor M includes an image of the front of the machine by the front camera C1, and a grain. 1 image which displays the image which image | photographed the work object containing the image of the front-end | tip part of the grain discharge auger 13 by the discharge auger camera C2, and the image of the machine body rear by the rear camera C3, and displays the said work according to a work object The image switching mechanism S is provided with a priority mechanism P that controls the switching of the target image in accordance with the work situation.

  Note that the present invention can be applied to any work vehicle including a combine in which an image captured by a camera attached to a vehicle body can be monitored from the control unit by an image display monitor installed in the control unit.

13 Grain discharge auger C Controller C1 Front camera C2 Grain discharge auger camera C3 Rear camera L Main transmission operation member M Image display monitor O Control part P Priority mechanism S Image switching mechanism

Claims (3)

An image display monitor provided in the control unit and capable of dividing and displaying a plurality of images on one screen;
A front camera for capturing an image of the front of the aircraft, provided at the front of the aircraft;
A grain discharge auger camera provided on the top of the machine to take an image of the tip of the grain discharge auger;
A rear camera for taking images of the rear of the aircraft,
With
The image display monitor shoots a work target including an image in front of the machine body by the front camera, an image of a tip of the grain discharge auger by the grain discharge auger camera, and an image of the rear of the machine body by the rear camera. Displayed images,
In a combine equipped with an image switching mechanism capable of switching to one image displaying the work according to the work target,
The combine according to claim 1, wherein the image switching mechanism is provided with a priority mechanism for controlling switching of the target image according to a work situation. The priority mechanism links the main speed change operation member and each of the cameras,
When the image display monitor is displaying an image of the tip of the grain discharge auger and the main speed change operation member is operated within a predetermined time, the tip of the grain discharge auger is displayed on the image display monitor. The combine according to claim 1, wherein the image is displayed with priority. The priority mechanism links the main speed change operation member and each of the cameras,
When the image display monitor is displaying an image of the tip of the grain discharge auger and the main shift operation member is operated within a predetermined time, the plurality of work images are prioritized over the image display monitor. The combine according to claim 1, wherein the combine is displayed.

Images