JP2014117171A - Monitoring device of combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the visibility of a display image by avoiding a monitor display from being frequently switched even when a main speed change lever is operated in a repeating pattern such as "backward movement range → neutral range → backward movement range ...".SOLUTION: A control part 65 of a monitoring device includes: lever position discrimination means for discriminating in which range an operating position of a main speed change lever 53 is located, a forward movement range, a neutral range, or a backward movement range. When the main speed change lever is operated from the neutral range to the forward movement range, an image displayed on a monitor 57 is switched to an auger camera image. When the main speed change lever 53 is operated from the neutral range to the backward movement range, an image displayed on the monitor 57 is switched to a back camera image, and when the main speed change lever 53 is operated from the forward movement range or the backward movement range to the neutral range, an image displayed on the monitor 57 is not switched.

Description

  The present invention relates to a combine monitoring device that displays an image of a camera arranged in a fuselage on a monitor arranged in front of a driver's seat.

  Conventionally, as a monitor device mounted on a combine, an aircraft front camera (for example, an auger camera) that captures the front of the aircraft, an aircraft rear camera (for example, a back camera) that captures the rear of the aircraft, and the front of the driver's seat And a monitor that displays an image captured by the aircraft front camera and the aircraft rear camera, and automatically switches the image displayed on the monitor according to the forward and backward movement of the aircraft. (For example, refer to Patent Documents 1 and 2).

  According to such a monitor device, since the front camera image is displayed on the monitor when the aircraft is moving forward and the rear camera image is displayed on the monitor when the aircraft is moving backward, it is not necessary for the operator to switch images. There is an advantage that the operation labor can be reduced.

JP 2008-89 A JP 2008-5712 A

  However, in the monitor devices disclosed in Patent Documents 1 and 2, the front camera image is displayed on the monitor when the main shift lever is in the forward range or the neutral range, and the rear camera image is displayed on the monitor when the main shift lever is in the reverse range. For example, in order to gradually move backward while checking for obstacles in the rear of the aircraft when entering the garage of the aircraft, etc., repeat the main shift lever as `` reverse range → neutral range → reverse range ... '' When the operation is performed with the pattern, there is a problem that the monitor display is frequently switched and the visibility of the display image is lowered.

The present invention was created for the purpose of solving these problems in view of the above situation, and a front camera for photographing the front of the aircraft, a rear camera for photographing the rear of the aircraft, A monitor that is disposed in front of the driver's seat and that displays images captured by the aircraft front camera and the aircraft rear camera, and a controller that automatically switches the image displayed on the monitor according to forward and backward movement of the aircraft. The combine monitoring device includes a lever position determining means for determining whether the operation position of the main transmission lever is in a forward range, a neutral range, or a reverse range, and the main transmission lever is moved from the neutral range. When operated in the forward range, the image displayed on the monitor is switched to the front camera image, and when the main shift lever is operated from the neutral range to the reverse range, the image displayed on the monitor is displayed. Switching the machine body rear camera image, the main shift lever when it is operated in the neutral range of the forward range or reverse range, characterized in that it does not perform the switching of the image to be displayed on the monitor.
The control unit may display a rear camera image on the monitor when the engine is started in a state where the main transmission lever is in the neutral range.

According to the first aspect of the present invention, when the main speed change lever is operated from the forward range or the reverse range to the neutral range, the image displayed on the monitor is not switched. The monitor display changes frequently even if the main shift lever is operated in a repetitive pattern such as “reverse range → neutral range → reverse range ...” when slowly moving backward while checking for obstacles. This can be avoided and the visibility of the displayed image can be improved.
According to the second aspect of the present invention, when the engine is started with the main speed change lever positioned in the neutral range, the rear camera image is displayed on the monitor. However, it is possible to safely travel backward while viewing the rear camera image on the monitor.

It is a side view of a combine. It is a top view of a combine. It is a side view which shows the structure of the front end side of a discharge auger. It is a disassembled perspective view which shows the structure of the front end side of a discharge auger. It is a disassembled perspective view which shows the attachment structure of a back camera. It is a side view which shows the attachment structure of a back camera. It is a perspective view of a driving operation part. It is an internal view of the driving operation part which shows the front structure of a driver's seat. It is a front view of the monitor which displayed the picture of an auger camera (at the time of storage of a discharge auger). It is a front view of the monitor which displayed the image of the back camera. It is explanatory drawing of the grain discharge operation | work by a discharge auger. It is a block diagram which shows the input / output of a control part. It is a flowchart which shows the procedure of an automatic switching monitor process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a combine. The combine 1 has a machine body 3 supported by a pair of left and right crawler traveling devices 2. A pre-processing unit 5 for cutting is provided. A driving operation unit 6 for operating the combine 1 is provided on the right rear side of the preprocessing unit 5, and the grain from the cereal harvested by the preprocessing unit 5 is provided behind the driving operation unit 6. A threshing unit 7 for threshing and selecting the cereals and a grain tank 8 for storing the selected cereal grains are provided.

  Further, above the threshing unit 7 and the grain tank 8, a discharge auger 10 that discharges the grains stored in the grain tank 8 is provided. A post-processing unit 9 is provided for post-processing the discharged waste.

  The discharge auger 10 is installed in a horizontal spiral (not shown) installed in the lower part of the grain tank 8, a vertical pipe 11 erected along the rear surface of the grain tank 8, and the vertical pipe 11. A helical carrier (not shown), a horizontal pipe 12 extending in the lateral direction at the upper end of the vertical pipe 11, a helical carrier 13 (see FIG. 3) housed in the horizontal pipe 12, and a discharge unit 15 for discharging the grains And the horizontal spiral and the helical carrier 13 are rotationally driven by the power transmitted through the discharge clutch (not shown), so that the grains in the grain tank 8 cause the vertical pipe 11 and the horizontal pipe 12 to move. Via, it is discharged from the discharge port 16 of the discharge unit 15.

  The horizontal pipe 12 is connected to the upper end of the vertical pipe 11 so as to be vertically rotatable, and moves up and down in accordance with the expansion and contraction of the lifting cylinder 10a interposed between the vertical pipe 11 and the horizontal pipe 12. The swivel operation is performed in accordance with the rotation of the vertical pipe 11 accompanying the drive of the swivel motor 10b. 1 and 2 show a state in which the discharge auger 10 is in the storage position (a specific position outside the discharge range). When discharging the grain in the grain tank 8, a predetermined position from the storage position is shown. The discharge auger 10 is swung within the discharge range.

As the turning position and range of the discharge auger 10, “storage range”, “discharge range”, and “other than the discharge range” are shown, but these definitions are as follows.
The “storage position” is a position where the discharge auger 10 is directly above the auger receiver provided in the machine body 3 (see FIGS. 1 and 2).
The “discharge range” is a swivel range of the discharge auger 10 in which the grains can be discharged, and is a position where the discharge port 16 is off the body 3 (see, for example, FIG. 11).
“Other than the discharge range” is a turning range of the discharge auger 10 where the grain cannot be discharged, and includes a position where the discharge port 16 faces the machine body 3 and a “storage position”. Incidentally, in the actual machine, the discharge auger 10 becomes undischargeable by restricting the engagement of the discharge clutch in “outside the discharge range”.

  As shown in FIG. 3, the discharge part 15 is provided in the front end side of the discharge auger 10, and the discharge port 16 formed in the rectangular shape is provided. A cover 17 is attached to the discharge port 16 so as to surround the discharge port 16, and an auger flap 19 is provided so as to be freely opened and closed. The auger flap 19 is supported by a rotating shaft (not shown). A sector gear 22 that meshes with the output gear 21 of the electric motor 20 is attached to the rotating shaft, and the rotation angle of the rotating shaft is detected. The potentiometer 23 is provided.

  Further, as shown in FIG. 4, the discharge unit 15 is provided with an auger camera 25 (an aircraft front camera) for photographing the lower side of the distal end side of the discharge auger 10, and the auger camera 25 and the electric motor 20 are Covered with a cover 26. The cover 26 is provided with a holder 29 that houses a remote controller 27 for operating the discharge auger 10, and an illumination lamp 30 that illuminates the lower portion of the discharge portion 15 is provided next to the holder 29.

  As shown in FIG. 5, a waste cutter (not shown) for shredding the threshing waste is incorporated in the post-processing unit 9 provided at the rear of the machine body 3. The discharge opening is covered with a switching plate 31 that can be freely opened and closed. A frame body 32 is provided above the switching plate 31 so as to cover the switching plate 31. An illumination lamp 33 for illuminating the rear side of the machine body 3 is provided on the upper surface of the plate member 32a constituting the frame body 32, and a back camera for photographing the rear of the machine body 3 on the lower surface of the plate member 32a. 35 (airframe rear camera) is attached via a bracket 36.

  A cover 37 is attached to the rear side of the frame body 32. When the cover 37 is attached to the frame body 32, the cover 37 is formed with a rectangular notch 37a surrounding the back camera 35. The notch 37a is shown in FIGS. As described above, a flange 37b for covering the back camera 35 is provided.

  As shown in FIG. 7, the driving operation unit 6 is covered with a cabin 43 including a windshield 39, a slite type glass door 40, a rear glass 41, a roof unit 42, and the like. A driver seat 45 on which a driver is seated is provided in the cabin 43, and a remote controller 46 for operating the discharge auger 10 is disposed behind the driver seat 45.

  A front panel 49 is provided in front of the driver's seat 45. The front panel 49 is provided with a steering lever 50 for steering the combine 1, a display panel 51 for displaying various instruments, and the like. It has been. A side panel 52 is provided on the side of the driver seat 45, and a main transmission lever 53 and a sub transmission lever 55 that change the speed of the combine 1 are provided on the side panel 52. Further, below the driver's seat 45, an engine (not shown) is disposed so as to be covered with an engine cover 56.

  The combine 1 according to the present embodiment includes a main transmission that includes a hydrostatic continuously variable transmission (HST). The combine 1 according to the shift operation of the main transmission by the main transmission lever 53 performs a stepless travel shift and forward / reverse travel. The shift operation range of the main shift lever 53 is interposed between the forward range that is the forward shift operation region, the reverse range that is the reverse shift operation region, and the forward range and the reverse range. The neutral range is included (see FIG. 13).

  Further, the combine 1 of the present embodiment includes a sub-transmission device including a gear-type stepped transmission, and a stepwise traveling shift can be performed based on a shift operation of the sub-transmission device by the sub transmission lever 55. The speed change operation range of the sub-shift lever 55 includes a work position (medium / low speed position) selected during work travel such as cutting work travel, a movement position (high speed position) selected during travel travel such as road travel, A neutral position interposed between the work position and the movement position is included.

  As shown in FIG. 8, the driving operation unit 6 is provided with a monitor 57 that displays images of the auger camera 25 and the back camera 35. For example, the monitor 57 of the present embodiment is disposed so as to be positioned on the upper right side of the windshield 39 when viewed from the operator sitting in the driver's seat 45. The monitor 57, the auger camera 25, the back camera 35, and the like constitute a combine monitor device.

  As shown in FIGS. 9 and 10, a switch box 59 is provided above the monitor 57, and an image displayed on the monitor 57 is displayed on the switch box 59 as an image of the auger camera 25 or the back camera 35. A monitor changeover switch 60 is provided for selecting the automatic changeover mode for manual changeover or automatic changeover according to the situation.

  A monitor 57 shown in FIG. 9 displays an image of the auger camera 25 when the discharge auger 10 is stored. In this display image, at least the left end position of the preprocessing unit 5 can be confirmed. Also, as shown in FIG. 11, when the discharge auger 10 is in the discharge range (other than the storage position), the display image of the monitor 57 changes according to the turning or raising / lowering of the discharge auger 10, and the track is displayed by the display image. The relative position of the outlet 16 with respect to T and the state of grain discharge with respect to the truck T can be confirmed. Further, the monitor 57 shown in FIG. 10 displays an image of the back camera 35, and in this display image, an obstacle behind the aircraft and the processing status of the post-processing unit 9 can be confirmed.

  As shown in FIG. 12, the monitor device includes a control unit 65 configured using a microcomputer or the like. On the input side of the control unit 65, in addition to the auger camera 25, the back camera 35 and the monitor changeover switch 60 described above, an auger turning position detecting means 66 for detecting the turning position of the discharge auger 10 and the power of the preprocessing unit 5 are provided. Cutting clutch detection means 67 for detecting ON / OFF of a cutting clutch (not shown) interposed in the transmission path, and ON / OFF of a threshing clutch (not shown) interposed in the power transmission path of the threshing unit 7 Threshing clutch detection means 68 for detecting OFF, main transmission lever detection means 69 for detecting the position of the main transmission lever 53, auxiliary transmission lever detection means 70 for detecting the position of the auxiliary transmission lever 55, and detection of engine start On the other hand, the above-described monitor 57 is connected to the output side of the control unit 65.

  The control unit 65 switches the video displayed on the monitor 57 in accordance with the switching operation of the monitor switch 60. For example, when the operation position of the monitor changeover switch 60 is “auger”, the image of the auger camera 25 is displayed on the monitor 57, and when the operation position is “rear”, the image of the back camera 35 is displayed on the monitor 57. If the operation position is “automatic”, an automatic switching mode for automatically switching the video to be displayed on the monitor 57 according to the situation is executed.

  When executing the automatic switching mode, the control unit 65 includes a state determination unit that determines the cutting operation state and the moving traveling state, a forward / reverse determination unit that determines whether the airframe 3 is moving forward or backward, and a turning position of the discharge auger 10. An auger turning position discriminating means that discriminates the forward movement of the airframe 3 when it is determined that the turning position of the discharge auger 10 is outside the predetermined storage position or the discharge range and is in a moving travel state. The video displayed on the monitor 57 is switched to the video of the auger camera 25 or the back camera 35 according to the reverse movement, and the turning position of the discharge auger 10 is outside the predetermined storage position or the discharge range, and in the cutting operation state. If it is determined that there is, the video of the back camera 35 is displayed on the monitor 57 regardless of whether the airframe 3 moves forward or backward.

  That is, when it is determined that the discharge auger 10 is out of the discharge range and is in the traveling state, the image displayed on the monitor 57 is displayed as the auger camera 25 or the back camera 35 according to the forward and backward movement of the airframe 3. If it is determined that the discharge auger 10 is out of the discharge range and is in the cutting operation state, the image of the back camera is displayed on the monitor 57 regardless of whether the airframe 3 moves forward or backward. Therefore, even during the cutting operation by forward traveling, the back camera image can be displayed on the monitor 57 and the post-processing status such as the cutter and knotter can be confirmed. In addition, since the back camera image is displayed on the monitor 57 on the condition that the turning position of the discharge auger 10 is outside the predetermined storage position or the discharge range, the back camera image is displayed on the monitor 57 during the discharge operation of the discharge auger 10. Can be prevented from being displayed.

  As a state discriminating means, a cutting operation state (clutch ON) based on ON / OFF detection of a working clutch (threshing clutch, cutting clutch) interposed in the power transmission path of the threshing unit 7 and / or the preprocessing unit 5 It may be discriminated from the moving travel state (clutch OFF), and the discrimination between the cutting operation state (work position) and the travel state (moving position) based on the detection of the lever position of the auxiliary transmission lever 55 may be performed. It may be what you do. Incidentally, in this embodiment, when both the threshing clutch and the mowing clutch are OFF, it is determined that the vehicle is in the traveling state.

  When it is determined that the discharge auger 10 is out of the discharge range and is in the traveling state, the control unit 65 displays an image to be displayed on the monitor 57 according to the forward or backward movement of the airframe 3. When switching to the image of the back camera 35, there is provided a lever position determining means for determining whether the operation position of the main transmission lever 53 is in the forward range, the neutral range, or the reverse range, and the main transmission lever 53 is moved from the neutral range to the forward range. When the main shift lever 53 is operated from the neutral range to the reverse range, the video displayed on the monitor 57 is switched to the back camera video. When the main transmission lever 53 is operated from the forward range or the reverse range to the neutral range, the image displayed on the monitor 57 is not switched. .

  In other words, when the main speed change lever 53 is operated from the forward range or the reverse range to the neutral range, the image displayed on the monitor 57 is not switched. When slowly moving backward while checking, avoiding frequent switching of the monitor display even if the main shift lever 53 is operated in a repetitive pattern such as “reverse range → neutral range → reverse range ...”. In addition, the visibility of the displayed video can be improved.

  In addition, the control unit 65 displays a back camera image on the monitor 57 when the engine is started with the main transmission lever 53 positioned in the neutral range. In this way, even when the vehicle travels backward immediately after the engine is started, the vehicle can travel backward while viewing the back camera image on the monitor 57 safely.

  Next, a processing procedure of automatic switching monitor processing for realizing the automatic switching mode according to the embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 13, in the automatic switching monitor process, first, the auger turning position detection means 66 determines the turning position of the discharge auger 10 based on the detection signal (S1: auger turning position determination means). If it is determined that the discharge auger 10 is within the discharge range, the image of the auger camera 25 is displayed on the monitor 57 (S2).

  On the other hand, when it is determined that the discharge auger 10 is outside the discharge range, the condition of the combine 1 is determined based on the detection signals of the harvesting clutch detection means 67, the threshing clutch detection means 68 and / or the auxiliary transmission lever detection means 70. (S3: state determination means). If it is determined that the work is in progress (reaping work state), an image of the back camera 35 is displayed on the monitor 57 (S4).

  If it is determined that the vehicle is moving (moving traveling state), the position of the main transmission lever 53 is determined based on the detection signal of the main transmission lever detection means 69 (S5, S6: lever position determination means). If it is determined that the position is the reverse position, the image of the back camera 35 is displayed on the monitor 57 (S7). If it is determined that the position is the forward position, the image of the auger camera 25 is displayed on the monitor 57 (S8). ). If it is determined that the position is the neutral position, the image is not switched on the monitor 57 in principle. However, if it is determined immediately after the starter switch 71 is turned on, that is, immediately after the key switch is turned on (S9), the monitor The image of the back camera 35 is displayed on 57 (S10).

  According to the present embodiment configured as described, the auger camera 25 for photographing the front of the body 3, the back camera 35 for photographing the rear of the body 3, and the front of the driver's seat 45, the auger camera 25 and A monitor device for a combine 1 comprising a monitor 57 for displaying an image photographed by a back camera 35 and a control unit 65 for automatically switching the image displayed on the monitor 57 in accordance with forward and backward movement of the machine body 3. The control unit 65 includes lever position determining means for determining whether the operation position of the main transmission lever 53 is in the forward range, the neutral range, or the reverse range, and the main transmission lever 53 is operated from the neutral range to the forward range. If the main shift lever 53 is operated from the neutral range to the reverse range, the image displayed on the monitor 57 is switched to the auger camera image. When switching to the back camera image and the main speed change lever 53 is operated from the forward range or the reverse range to the neutral range, the image displayed on the monitor 57 is not switched. If the main shift lever 53 is operated in a repetitive pattern such as “reverse range → neutral range → reverse range ...” while slowly moving backward while checking obstacles behind the aircraft, the monitor display It is possible to avoid frequent switching and improve the visibility of the displayed video.

  Further, when the engine is started with the main transmission lever 53 located in the neutral range, the control unit 65 displays the rear camera image on the monitor 57. Therefore, even when the vehicle travels backward immediately after the engine is started. Thus, it is possible to safely travel backward while viewing the back camera image on the monitor 57.

  Needless to say, the present invention is not limited to the above embodiment, and various modifications and additions can be made without departing from the scope of the claims. For example, in the above-described embodiment, the auger camera is also used as the airframe front camera. However, the airframe front camera may be provided separately from the auger camera. Further, in the above-described embodiment, the monitor display image is switched according to the forward and backward movement of the aircraft only during the traveling movement, but the monitor display image is switched according to the forward and backward movement of the aircraft even during the traveling operation. It may be.

DESCRIPTION OF SYMBOLS 1 Combine 3 Airframe 5 Pre-processing part 6 Driving | operation operation part 7 Threshing part 8 Grain tank 9 Post-processing part 10 Discharge auger 16 Discharge port 25 Auger camera 35 Back camera 45 Driver's seat 53 Main transmission lever 55 Sub transmission lever 57 Monitor 60 Monitor Changeover switch 65 control unit

Claims (2)

An aircraft front camera that captures the front of the aircraft,
An aircraft rear camera that captures the rear of the aircraft,
A monitor that is disposed in front of the driver's seat and displays images taken by the front camera and the rear camera;
A combined monitoring device comprising: a control unit that automatically switches a video to be displayed on a monitor according to forward and backward movement of the aircraft;
The controller is
Lever position determining means for determining whether the operation position of the main shift lever is in the forward range, neutral range, or reverse range,
When the main gearshift lever is operated from the neutral range to the forward range, the image displayed on the monitor is switched to the camera front camera image,
When the main gearshift lever is operated from the neutral range to the reverse range, the image displayed on the monitor is switched to the rear camera image,
A combine monitoring device, wherein the video displayed on the monitor is not switched when the main shift lever is operated from the forward range or the reverse range to the neutral range.   2. The combine monitoring apparatus according to claim 1, wherein when the engine is started in a state where the main transmission lever is in a neutral range, the control unit displays a camera rear camera image on the monitor.

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