JP6143716B2 - Work vehicle - Google Patents

Description

  The present invention relates to a configuration for automatically driving a machine body based on positioning data in a work vehicle such as a riding rice transplanter or a riding direct sowing machine.

  In a riding rice transplanter, which is an example of a work vehicle, when one work process is completed and the aircraft reaches the work end position of the work process (when it reaches the heel), the work process is completed and the vehicle turns at the shore. . When the turn at the heel is finished and the work start position of the next next work process is reached, the work is started and the next work process is entered. As described above, the riding type rice transplanter repeats one work process, turning at the shore and the next work process adjacent to the work process.

In the above-mentioned riding type rice transplanter, as disclosed in Patent Document 1, when the reference travel route is set by teaching based on the positioning data by the GPS module, the GNSS module, etc., the lateral side of the reference travel route Are configured such that a travel route along a reference travel route is set at a predetermined interval.
Therefore, by using the reference travel route and the travel route as the travel route of the work process, the aircraft can be automatically traveled along the travel route of the work process. This reduces the load on the driver.For example, if it becomes necessary to replenish seedlings on the seedling stage during the work process, the driver puts the seedlings on the road without running the aircraft temporarily. The seedling can be supplied to the table.

Japanese Patent Laying-Open No. 2008-92818 (see paragraph number [0028])

  Since seedlings are planted on the rice field in the riding type rice transplanter (seeds are supplied to the rice field in the riding type direct sowing machine), the work width of one work process and the work width of the adjacent work process must not overlap (overlapping) In the part to be carried out, the seedlings planted on the rice field in the previous work process are pushed down by the seedling planting device (float or the like) in the next work process).

Therefore, the work width of one work process and the work width of the adjacent work process are not overlapped with each other, and the work width of one work process and the work width of the adjacent work process are not separated from each other. It is necessary to set the travel route of the adjacent work process to the travel route of the work process.
Accordingly, as disclosed in Patent Document 1, when a travel route along the reference travel route is set at a predetermined interval on the side of the reference travel route, there is an error in positioning data or the like. It may be necessary to adjust the position of the travel route.

  The present invention sets a reference travel route based on positioning data in a work vehicle, sets a travel route along the reference travel route at a predetermined interval on the side of the reference travel route, and sets the airframe along the travel route. When configured to automatically travel, the object is to be able to easily adjust the position of the travel route.

[I]
(Constitution)
The first feature of the present invention is that the work vehicle is configured as follows.
A positioning unit equipped with a GNSS module and outputting positioning data of the aircraft;
A first setting unit for setting a reference travel route connecting the first predetermined position and the second predetermined position;
A second setting unit that sets a travel route along the reference travel route at a predetermined interval on the side of the reference travel route;
Ends traveling along the reference traveling route, turns and enters the adjacent traveling route, and finishes traveling along one traveling route, turns and enters the adjacent traveling route In a state where the aircraft is located at a position away from the travel route, a correction unit that corrects the position of the travel route to the position of the aircraft,
And an automatic steering unit that automatically operates the steering device so that the airframe travels along the travel route.

(Operation and effect of the invention)
[I] -1
According to the first aspect of the present invention, when the vehicle exits the reference travel route (travel route) and turns to enter the adjacent travel route, the driver observes the position of the aircraft and the reference travel route (travel route) while viewing the aircraft. The driver may turn the aircraft to enter an adjacent travel route, and the driver positions the aircraft in an appropriate position with respect to the reference travel route (travel route) (reference travel route (travel route)). And the work width of the adjacent travel route and the work width of the adjacent travel route are not separated too much).

According to the first feature of the present invention, when the aircraft enters an adjacent travel route, if the aircraft is located at a position away from the travel route, the position of the aircraft reflects the driver's intention. Therefore, the position of the travel route is corrected to the position of the aircraft, and the aircraft automatically travels along the corrected travel route thereafter.
As described above, when the aircraft enters an adjacent travel route, the position of the travel route is automatically adjusted by positioning the aircraft at an appropriate position. It is not necessary to adjust the position of the travel route, and the position of the travel route can be easily adjusted.

[I] -2
When the aircraft enters an adjacent travel route, if the position of the travel route is not adjusted while the aircraft is positioned away from the travel route, the aircraft will return to the travel route after that. The direction may be greatly corrected, which may lead to disturbances in the work process and deterioration in ride comfort.

According to the first feature of the present invention, when the aircraft enters the adjacent travel route, if the aircraft is located at a position away from the travel route, the position of the travel route is corrected to the position of the aircraft. The aircraft is in a state of being located on the travel route.
Therefore, since the aircraft will try to travel along the travel route from the position on the travel route after this, the orientation of the aircraft will not be greatly corrected so that the aircraft will return to the travel route, and the work process may be disturbed or There will be no deterioration in comfort.

[II]
(Constitution)
The second feature of the present invention is that the work vehicle of the first feature of the present invention is configured as follows.
An information storage unit for storing the map data of the work place is provided.

(Operation and effect of the invention)
[II] -1
As described in the preceding paragraph [I], when only a positioning unit that includes a GNSS module and outputs positioning data of the aircraft, when setting a reference travel route connecting the first predetermined position and the second predetermined position, A person steers the aircraft to travel from the first predetermined position to the second predetermined position, accumulates positioning data and sets a reference travel path (teaching), or sets the reference travel path accumulated by another device or the like. Positioning data will be input.

[II] -2
According to the second feature of the present invention, in contrast to the state described in [II] -1, the information storage unit that stores the map data of the work place is provided. Therefore, as described in [II] -1 The first and second predetermined positions can be set based on the map data without performing a simple operation, and the reference travel route can be easily set.

[III]
(Constitution)
The third feature of the present invention resides in the following configuration in the work vehicle of the first or second feature of the present invention.
It has a working clutch that can transmit power to and cut off from the working device provided on the fuselage,
Ends traveling along the reference traveling route, turns and enters the adjacent traveling route, and finishes traveling along one traveling route, turns and enters the adjacent traveling route In the state
When the work clutch is operated in the transmission state, a difference between the position of the aircraft and the travel route is detected, and when the aircraft is located at a position away from the travel route, the position of the travel route is determined. The correction unit is configured to correct the position.

(Operation and effect of the invention)
[III] -1
As described in the preceding paragraph [I], when the aircraft enters the adjacent travel route, when the driver positions the aircraft in an appropriate position with respect to the reference travel route (travel route), The direction of the aircraft may be corrected while entering the route, and the aircraft may be positioned at an appropriate position. After that, the work device is operated (the work clutch is operated to the transmission state) to start the work. Sometimes.

[III] -2
In the state described in [III] -1 in the previous section, according to the third feature of the present invention, the position of the travel route is not corrected to the position of the aircraft immediately after the aircraft enters the adjacent travel route. When the work clutch is later operated to the transmission state, the position of the travel route is corrected to the position of the airframe.

  As a result, when the aircraft enters the adjacent travel route, the aircraft orientation can be corrected while the aircraft enters the adjacent travel route, and the aircraft orientation can be corrected sufficiently by correcting the aircraft orientation. After being positioned at an appropriate position (after operating the work clutch to the transmission state), the position of the travel path can be corrected to the position of the fuselage, and the accuracy of adjustment of the position of the travel path can be improved. Can be increased.

[IV]
(Constitution)
A fourth feature of the present invention resides in the following configuration in the work vehicle of the third feature of the present invention.
The automatic steering unit is operated when the working clutch is operated in a transmission state, and the automatic steering unit is stopped when the working clutch is operated in a disconnected state. Is configured.

(Operation and effect of the invention)
[IV] -1
As described in the preceding section [I], when the reference travel route (travel route) is terminated and turned to enter the adjacent travel route, the work device is stopped (operating the work clutch in the disengaged state), Make a turn.
According to the fourth aspect of the present invention, when the reference traveling route (traveling route) is finished and the vehicle turns to enter the adjacent traveling route, the automatic steering unit is automatically operated as the work clutch is operated in the disengaged state. Therefore, the driver can operate the steering device without being interfered by the automatic steering section, and can easily position the aircraft relative to the reference travel route (travel route). Can be located.
In this case, it is not necessary to manually operate the automatic steering section in a stopped state, which is favorable in terms of operability.

[IV] -2
According to the fourth aspect of the present invention, when the airframe is entered into an adjacent travel route and the operation clutch is operated to the transmission state after that, the position of the travel route is corrected to the position of the airframe. The automatic steering section is automatically activated, and the aircraft automatically travels along the travel route.
As a result, it is not necessary to manually operate the automatic steering section in an operating state, and the operability is favorable.

[V]
(Constitution)
A fifth feature of the present invention resides in the following configuration in the work vehicle of the first or second feature of the present invention.
A manual operating tool for artificially operating and stopping the automatic steering section is provided,
Ends traveling along the reference traveling route, turns and enters the adjacent traveling route, and finishes traveling along one traveling route, turns and enters the adjacent traveling route In the state
When the manual operation tool is operated and the automatic steering unit is in an activated state, a difference between the position of the aircraft and the travel route is detected, and the aircraft is located at a position away from the travel route, The correction unit is configured to correct the position of the travel route to the position of the body.

(Operation and effect of the invention)
[V] -1
As described in the preceding paragraph [I], when the aircraft enters the adjacent travel route, when the driver positions the aircraft in an appropriate position with respect to the reference travel route (travel route), The work may be started after correcting the orientation of the aircraft while entering the route and positioning the aircraft in an appropriate position.

[V] -2
In the state described in the preceding item [V] -1, according to the fifth feature of the present invention, the automatic steering unit may be operated in a stopped state by a manual operation tool to perform turning.
As a result, when the reference travel route (travel route) is terminated and the vehicle turns and enters an adjacent travel route, the automatic steering unit can be stopped, so that the driver receives interference from the automatic steering unit. The steering device can be operated without any problem, and the airframe can be positioned at an appropriate position with respect to the reference travel route (travel route).

[V] -3
According to the fifth feature of the present invention, when the aircraft enters the adjacent traveling route, the position of the traveling route is not immediately corrected to the position of the aircraft, but the driver operates the manual operation tool after this. When the automatic steering section is operated, the position of the travel route is corrected to the position of the aircraft.
As a result, when the aircraft enters the adjacent travel route, the aircraft orientation can be corrected while the aircraft enters the adjacent travel route, and the aircraft orientation can be corrected sufficiently by correcting the aircraft orientation. After the driver is positioned at an appropriate position, the driver can operate the manual operating tool to operate the automatic steering section so that the position of the travel route can be corrected to the position of the aircraft. Thus, the accuracy of adjustment of the position of the travel route can be increased.

[VI]
(Constitution)
A sixth feature of the present invention resides in the following configuration in the work vehicle of the fourth or fifth feature of the present invention.
A display device for displaying the airframe and the reference travel route or the travel route;
The display device is configured such that when the automatic steering unit is stopped, the display device is in a display state, and when the automatic steering unit is in an activated state, the display device is in a non-display state.

(Operation and effect of the invention)
[VI] -1
According to the sixth aspect of the present invention, the apparatus includes a display device that displays the airframe and the reference travel route (travel route). When the automatic steering unit is in a stopped state, the airframe and the reference travel route (travel route) Is displayed on the display device.
In the state described in the preceding paragraph [III] [IV], for example, when the travel route is finished and turned to enter the next adjacent travel route, when the work device is stopped (when the work clutch is operated to be disconnected), The automatic steering section is automatically stopped.
Thus, when the driver turns the steering device while the automatic steering unit is stopped, when the aircraft and the travel route are displayed on the display device, the driver visually observes the display device to view the aircraft. The airframe can be reasonably positioned with respect to the travel route while grasping the positional relationship between the travel route and the travel route.

  In the state described in the preceding item [V], for example, when the automatic steering section is operated in a stopped state by a manual operation tool on the travel route, the driver displays the display device when the aircraft and the travel route are displayed on the display device. While grasping the positional relationship between the aircraft and the travel route by visual observation, the steering device can be operated so that the aircraft travels along the travel route.

[VI] -2
According to the sixth aspect of the present invention, when the automatic steering section is in an operating state, the airframe and the reference travel route (travel route) are not displayed on the display device.
As a result, in a state in which the aircraft automatically travels along the travel route (operational state of the automatic steering unit), the driver feels uneasy by viewing the display of the aircraft and the reference travel route (travel route). You can concentrate on your work.

It is a whole side view of a riding type rice transplanter. It is a figure which shows the cooperation state of a control apparatus and each part. It is a top view which shows the operation | work form (work process) of a riding type rice transplanter. It is a top view which shows the operation | work form (rotation planting process) of a riding type rice transplanter. (A) It is a top view which shows the state of the idle travel path | route of a work process. (B) It is a top view which shows the state of the reference | standard driving | running route of a work process. It is a top view which shows the state of the driving | running route of a work process. It is a top view which shows the state of the travel path | route of the last work process, and the travel path | route of the 1st rotation planting process. It is a top view which shows the state which enters into the driving | running route of a work process from the reference | standard driving | running route of a work process. It is a figure which shows the flow from the idle travel path | route of a work process to the beginning of the reference | standard travel path | route of a work process. It is a figure which shows the flow from the start of the reference | standard driving | running route of a work process to the start of the driving | running route of a work process. It is a figure which shows the flow from the beginning to the end of the driving | running route of a work process. It is a figure which shows the flow from the beginning of the following travel path | route of a work process. It is a figure which shows the flow from the end of the travel path | route of the last work process to the end of the travel path | route of the 1st rotation planting process. It is a figure which shows the flow from the beginning of the driving | running | working path | route of the next rotation planting process. It is the whole riding type rice transplanter of the state which connected the supply device which spreads and supplies a medicine to a rice field to the rear part of a seedling planting device. It is a top view which shows the supply state of the chemical | medical agent to a rice field in the state which connected the supply apparatus which spreads and supplies a chemical | medical agent to a rice field to the rear part of a seedling planting apparatus.

[1]
As shown in FIG. 1, a link mechanism 3 and a hydraulic cylinder 4 for raising and lowering the link mechanism 3 are provided at the rear of the airframe having right and left front wheels 1 and right and left rear wheels 2. A seedling planting device 5 (corresponding to a working device) is supported at the rear portion of 3, and a riding type rice transplanter, which is an example of a working vehicle, is configured.

  As shown in FIG. 1, the seedling planting device 5 includes four transmission cases 6, a rotation case 7 rotatably supported on the right and left sides of the rear portion of the transmission case 6, and both ends of the planting case 7. A pair of planting arms 8, a float 9, a seedling platform 10, and the like are provided and configured in an 8-row planting type. Thus, as the seedling platform 10 is driven to reciprocate laterally to the left and right, the rotary case 7 is rotationally driven, and the planting arms 8 alternately take out the seedlings from the lower part of the seedling platform 10 to the surface G. Plant.

  As shown in FIGS. 1 and 2, right and left markers 19 are provided on the right and left side portions of the seedling planting device 5, so that they act on the surface G to form an indicator (see FIG. 1). , And a storage posture (see FIG. 2) that is separated upward from the surface G. The right and left markers 19 include an arm portion 19a supported by the seedling planting device 5 so as to be swingable up and down, and a rotating body 19b supported at the tip of the arm portion 19a so as to freely rotate. The electric motor 21 for operating the right and left markers 19 to the action and retracted posture is provided, and the electric motor 21 is operated by the control device 23.

As shown in FIGS. 1 and 2, a control tower 18 is provided in the left and right center of the front part of the aircraft, and a control handle 20 (corresponding to a steering device) for steering the front wheel 1 is provided in the control tower 18. Yes.
As shown in FIG. 1, right and left struts 29 are connected to the right and left sides of the front part of the aircraft, and a horizontal frame 30 is connected to the top of the right and left struts 29. A reinforcing frame 31 is connected to the left column 29. A plurality of stages of seedling raising platforms 32 are connected outwardly to the right and left struts 29.

[2]
Next, the fertilizer application device 17 and the leveling device 35 will be described.
As shown in FIG. 1, a feeding portion 12 and a hopper 13 are provided on the rear side of the driver seat 11, a blower 14 is provided on the lower side of the driver seat, and a groove forming device 15 provided in the float 9 is provided. A hose 16 is connected across the feeding portion 12 to constitute a fertilizer application device 17. As a result, the fertilizer stored in the hopper 13 is fed out by the feeding unit 12, supplied from the hose 16 to the groove forming device 15 by the conveying air of the blower 14, and supplied to the groove formed on the surface G by the groove forming device 15. Is done.

As shown in FIGS. 1 and 2, right and left support cases 33 are supported on the right and left sides of the front part of the seedling planting device 5 so as to be swingable up and down around the horizontal axis P <b> 2. A leveling rotor 34 having a length over substantially the entire width of the planting device 5 is rotatably supported across the right and left support arms 33, and is supported by the right and left support arms 33, the leveling rotor 34, and the like. A leveling device 35 for leveling the surface G is configured.
An electric motor 36 for raising and lowering the leveling device 35 is provided in the seedling planting device 5. The leveling device 35 is moved up and down by an elevating motor 36 to an operating position where the leveling device 35 is grounded to the surface G, and a stop position which is located above the surface G and is not grounded to the surface G.

As shown in FIGS. 1 and 2, the power of the engine (not shown) at the front of the aircraft is supplied via a hydrostatic continuously variable transmission (not shown) and a sub-transmission (not shown). It is transmitted to the front wheel 1 and the rear wheel 2.
The power branched from between the hydrostatic continuously variable transmission and the sub-transmission is transmitted to the seedling planting device 5 via the planting clutch 26 (corresponding to a work clutch), and the leveling device is transmitted from the seedling planting device 5. 35.
The power branched from between the hydrostatic continuously variable transmission and the auxiliary transmission is transmitted to the feeding section 12 through the fertilizer clutch 27, and the planting and fertilizer clutches 26, 27 are operated in the transmission and shut-off states. An electric motor 28 is provided.

As a result, as shown in FIGS. 1 and 2, when the planting clutch 26 is operated in the transmission state, in the seedling planting device 5, the seedling platform 10 is driven to reciprocate laterally to the left and right, and the rotary case 7 rotates. When driven, the planting arms 8 alternately take out the seedlings from the lower part of the seedling platform 10 and plant them on the field G. In the leveling device 35, the leveling rotor 34 is rotationally driven.
When the planting clutch 26 is operated in the disconnected state, the seedling raising table 10 and the rotating case 7 are stopped in the seedling planting device 5, and the leveling rotor 34 is stopped in the leveling device 35.

  As shown in FIGS. 1 and 2, when the fertilizer clutch 27 is operated in the transmission state, the fertilizer is fed out from the hopper 13 by a predetermined amount by the feeding unit 12, and the fertilizer passes through the hose 16 by the conveying air of the blower 14. The fertilizer is supplied to the rice field G via the groove generator 15. When the fertilizer application clutch 27 is operated in the disconnected state, the feeding unit 12 stops and the supply of fertilizer to the rice field G stops.

[3]
Next, the automatic raising / lowering control part 40 of the seedling planting apparatus 5 is demonstrated.
As shown in FIG. 2, an automatic elevation control unit 40 is provided in the control device 23 as software. A potentiometer 22 for detecting the height of the central float 9 with respect to the seedling planting device 5 is provided, with the rear portion of the central float 9 supported so as to be swingable up and down around the horizontal axis P1 of the seedling planting device 5. The detection value of the potentiometer 22 is input to the control device 23. As the aircraft moves, the center float 9 follows the ground surface G and detects the height of the center float 9 with respect to the seedling planting device 5 based on the detection value of the potentiometer 22. The height from the float 9) to the seedling planting device 5 can be detected.

  As shown in FIG. 2, the hydraulic cylinder 4 is provided with a control valve 24 for supplying and discharging hydraulic oil, and the control valve 24 is operated by the control device 23. When hydraulic oil is supplied to the hydraulic cylinder 4 by the control valve 24, the hydraulic cylinder 4 is contracted to raise the seedling planting device 5, and when hydraulic oil is discharged from the hydraulic cylinder 4 by the control valve 24, the hydraulic pressure is increased. The cylinder 4 is extended and the seedling planting device 5 is lowered.

  As shown in FIG. 2, based on the height of the center float 9 with respect to the seedling planting device 5 (the height from the field G (center float 9) to the seedling planting device 5), the seedling planting device 5 The control valve 24 is operated so as to maintain the set height from the surface G (so that the detected value of the potentiometer 22 (the vertical distance between the potentiometer 22 and the central float 9) is maintained at the set value), and the hydraulic pressure The cylinder 4 expands and contracts, and the seedling planting device 5 automatically moves up and down (the operation state of the automatic lifting control unit 40).

[4]
Next, the operation lever 25 will be described.
As shown in FIGS. 1 and 2, an operation lever 25 is provided on the lower right side below the steering handle 20, and the operation lever 25 extends outward on the right side. The operation lever 25 is configured to be operable in a cross direction from the neutral position N to the upward ascending position U, the downward descending position D, the rear right marker position R, and the front left marker position L, and is biased to the neutral position N. The operation position of the operation lever 25 is input to the control device 23.

  Based on the operation of the operation lever 25, the control valve 24 and the electric motors 21 and 28 are operated by the control device 23 as described below, and the hydraulic cylinder 4, planting and fertilizing clutches 26 and 27, right and left markers 19 is operated.

  As shown in FIG. 2, when the operating lever 25 is operated to the raised position U, the planting and fertilizing clutches 26 and 27 are operated in a disconnected state, the automatic elevating control unit 40 is stopped, and the hydraulic cylinder 4 is contracted. The seedling planting device 5 is raised and the right and left markers 19 are operated to the retracted posture. When the seedling planting device 5 reaches the upper limit position, the hydraulic cylinder 4 automatically stops.

  As shown in FIG. 2, when the operation lever 25 is operated to the lowered position D, the automatic lifting control unit 40 is stopped, the planting and fertilizing clutches 26 and 27 are operated in the disconnected state, and the right and left markers 19 are retracted. In the state operated to the posture, the hydraulic cylinder 4 extends and the seedling planting device 5 is lowered. When the center float 9 comes into contact with the rice field G, the automatic lifting control unit 40 is activated, and the seedling planting device 5 comes into contact with the rice field G and stops (the seedling planting device 5 is set to the set height from the rice field G). So that the seedling planting device 5 automatically moves up and down (so that the detection value of the potentiometer 22 (the vertical distance between the potentiometer 22 and the center float 9) is maintained at the set value). .

  As described above, when the operating lever 25 is operated to the lowered position D and then the operating lever 25 is operated again to the lowered position D, the planting and fertilizing clutches 26 and 27 are transmitted with the automatic lifting control unit 40 activated. Manipulated to state.

As shown in FIG. 2, the following operation is performed in a state where the height of the seedling planting device 5 is lower than a predetermined height set in advance.
In a state where the right (left) marker 19 is operated to the retracted position, if the operation lever 25 is operated to the right marker position R (left marker position L) for the first set time (relatively short time) or more, the right The (left) marker 19 is operated to the acting posture.
In a state where the right (left) marker 19 is operated to the acting posture, the operation lever 25 is moved to the right marker position R (left marker position L) for a second set time (a time longer than the first set time) or more. When operated, the right (left) marker 19 is operated to the retracted posture.

  As shown in FIG. 2, when the seedling planting device 5 rises and the height of the seedling planting device 5 becomes higher than a predetermined height set in advance, the right and left markers 19 in the action posture are in the retracted posture. Operated. In a state where the height of the seedling planting device 5 is higher than a predetermined height set in advance, even if the operation lever 25 is operated to the right and left marker positions R and L as described above, the right and left The left marker 19 is maintained in the retracted posture.

[5]
Next, the configuration of automatic travel control will be described.
As shown in FIGS. 1 and 2, the positioning unit 37 is connected to the left and right center of the frame 30. The positioning unit 37 includes a GNSS module, a gyro sensor module, and the like, and outputs positioning data of the aircraft to the control device 23.

As shown in FIGS. 1 and 2, a gate-type support frame 38 is provided on the control tower 18 so as to be positioned in front of the control handle 20 in a front view, and a monitor 39 (corresponding to a display device) is supported. It is connected to the frame 38.
A main switch 56, a first predetermined switch 57, and a second predetermined switch 58 are provided on the outer frame portion of the monitor 39.

  As shown in FIGS. 1 and 2, a steering motor 52 is provided at the base of the steering handle 20, and the steering wheel 52 can be operated by the steering motor 52 to steer the front wheels 1. A center mascot 53 is provided at the front of the aircraft, and a lamp 54 is provided above the center mascot 53. The aircraft is provided with a buzzer 55 that emits an alarm sound.

  As shown in FIG. 2, the first setting unit 41 for setting the reference travel route L01, the second setting unit 42 for setting the travel routes L02 to L05, the correction unit 43 for correcting the travel routes L02 to L05, and the steering motor 52 are provided. A self-propelled steering unit 44 to be operated, an information storage unit 45 for storing paddy field and surrounding map data, a remaining work calculation unit 46, a supply calculation unit 47, a supply setting unit 48, a supply device operation unit 49, a leveling setting unit 50, and The leveling device operating unit 51 is provided as software in the control device 23.

[6]
Next, an operation mode of the riding type rice transplanter will be described (No. 1).
For example, as shown in FIG. 3 and FIG. 4, a riding rice transplanter may adopt the following working mode in a square paddy field in plan view.

  For example, the aircraft is first positioned at the position K1 shown in FIG. 3, the seedling planting device 5 is lowered to the surface G, the leveling device 35 is operated to the stop position, and the left marker 19 is moved to the working posture (right marker). 19 is operated to the retracted posture). In this state, the planting and fertilization clutches 26 and 27 are operated in the disconnected state to travel along the heel B, and the index of the next work process (reference travel route L01) is formed on the surface G by the left marker 19. (Empty travel route LA1).

  In the empty travel route LA1, the planting and fertilizing clutches 26 and 27 are not operated in the transmission state, but the seedling planting device 5 is lowered to the surface G and the leveling device 35 is operated to the stop position to travel. This is because the float 9 erases the passing marks of the front wheel 1 and the rear wheel 2 while preventing the ground leveling device 35 from pushing the mud on the surface G.

  As shown in FIG. 3, when the aircraft reaches the shoreline from the idle travel route LA1, the seedling planting device 5 is lifted from the rice field G and turns LL1 (left direction), and the seedling planting device 5 is moved to the rice field G. (The leveling device 35 is at the stop position), and the planting and fertilizing clutches 26 and 27 are operated to the transmission state to enter the work process (reference travel route L01).

  In the work process (reference traveling route L01), the left marker 19 is operated to the retracted posture, the right marker 19 is operated to the operating posture, and the aircraft is moved along the index formed on the surface G in the empty traveling route LA1. By running, seedlings are planted and fertilizer is supplied, and the index of the next work process (traveling route L02) is formed on the rice field G by the right marker 19.

  As shown in FIG. 3, when the aircraft reaches the heel from the work process (reference travel route L01), the planting and fertilization clutches 26 and 27 are operated to be disconnected, and the seedling planting device 5 is raised from the rice field G. Turn LL2 (right direction), lower the seedling planting device 5 to the surface G (the leveling device 35 is at the stop position), operate the planting and fertilizing clutches 26 and 27 to the transmission state, Enter the travel route L02).

  In the work process (traveling route L02), the right marker 19 is operated to the retracted posture, and the left marker 19 is operated to the operating posture, and along the index formed on the surface G in the working process (reference traveling route L01). By moving the aircraft in this manner, the indicator of the next work process (traveling path L03) is formed on the surface G by the left marker 19 while planting seedlings and supplying fertilizer.

[7]
Next, an operation mode of the riding type rice transplanter will be described (part 2).
As shown in FIG. 3 and FIG. 4 described in the previous item [6], a plurality of work processes (reference travel route L01, travel routes L02, L03, L04, L05) and turns LL1 (left direction), LL2 (right direction) ), LL3 (left direction), LL4 (right direction), and LL5 (left direction), a portion where planting of seedlings and supply of fertilizer is not performed along ridge B is formed along ridge B. The

  In the state shown in FIG. 3, when the aircraft reaches the heel from the work process (travel route L05), the planting and fertilization clutches 26 and 27 are operated to be disconnected, and the seedling planting device 5 is raised from the rice field G. Then, turn LL6 (right direction) is performed, and the aircraft is positioned at a position indicated by K7.

  As shown in FIG. 4, at the position indicated by K7, the seedling planting device 5 is lowered to the field surface G, the leveling device 35 is operated to the operating position, and the planting and fertilizing clutches 26, 27 are operated to the transmission state. , Enter the planting process (running route LB1). In the round planting process (travel path LB1), there is a cocoon B on the left side of the aircraft, and there are seedlings planted in the work process (travel path L05) on the right side of the aircraft. Operate in advance.

  As shown in FIG. 4, when the aircraft reaches the heel from the revolving planting process (travel route LB1), the planting and fertilizing clutches 26 and 27 are operated in the disconnected state, and the seedling planting device 5 is raised from the surface G. Then, by turning 90 degrees and moving backward, the aircraft is positioned at position K8, the seedling planting device 5 is lowered to the field G, the leveling device 35 is operated to the operating position, and the planting and fertilizing clutch 26 and 27 are operated to the transmission state to enter the next rotation planting process (travel route LB2). In the revolving planting process (travel route LB2), the right and left markers 19 are operated to the retracted posture in the same manner as the replanting process (running route LB1).

  After that, as shown in FIG. 4, the two round planting steps (travel paths LB3, LB4) (seedling planting device 5 are lowered to the surface G, the leveling device 35 is operated to the operating position, and planting is performed. The attachment and fertilization clutches 26 and 27 are operated to the transmission state, and the right and left markers 19 are operated to the retracted position). The revolving planting process (traveling route LB3) travels in the reverse direction on the idle travel route LA1 shown in FIG. 3, and after completing the replanting process (running route LB4), the aircraft made a turn LL6 (right direction). Reach position. Thereafter, the aircraft is taken out from the exit of the paddy field near the position where the turn LL6 (right direction) is performed.

  As described above, for example, in a square paddy field in a plan view as shown in FIGS. 3 and 4, one empty traveling route LA1, a plurality of work processes (reference traveling route L01, traveling routes L02 to L05) and 4 By performing the round planting process (travel routes LB1 to LB4), seedlings can be planted and fertilizer can be supplied in all parts of the rice field G.

[8]
Next, the idle travel route LA1 when the automatic travel control of the present invention is performed in the work mode of the riding type rice transplanter described in the preceding paragraphs [6] and [7] will be described based on FIG. 5 (a) and FIG. To do.

  When the main switch 56 is operated to the operating position (step S1), the aircraft and the map are displayed on the monitor 39 based on the positioning data of the positioning unit 37 and the paddy field and surrounding map data of the information storage unit 45 (step S1). S2).

  In a state where the aircraft is positioned at the position K1, the driver operates the operation lever 25 to the lowered position D to lower the seedling planting device 5 to the surface G (the operation state of the automatic lifting control unit 40, planting). And the fertilization clutches 26 and 27 in the disconnected state, the stop position of the leveling device 35) (step S3), the operating lever 25 is operated to the left marker position L, and the left marker 19 is operated (the right marker 19 is stored) ) (Step S4).

  In the above state, the driver operates the steering handle 20 while visually observing the kite B and the monitor 39 to cause the aircraft to travel along the kite B, and the next work process (reference running) is performed by the left marker 19. An index of the route L01) is formed on the field G (empty travel route LA1).

[9]
Next, in the working mode of the riding type rice transplanter described in [6] and [7], the reference travel route L01 when the automatic travel control of the present invention is performed is based on FIGS. 5 (b), 9 and 10. I will explain.

  When the aircraft reaches the shoreline from the idle travel route LA1, the driver operates the operation lever 25 to the raised position U to raise the seedling planting device 5 from the surface G (the automatic lifting control unit 40 is stopped, (Attachment and disengagement state of fertilization clutches 26 and 27, stop position of leveling device 35)

  The driver makes a turn LL1 (left direction) by operating the steering handle 20 while observing the indicators and the monitor 39 formed on the surface G in the empty travel route LA1, and the vehicle body makes the first predetermined route on the reference travel route L01. When reaching the position K2 to be the position A1, the operation lever 25 is operated to the lowered position D, and the seedling planting device 5 is lowered to the field surface G (the operating state of the automatic lifting control unit 40, planting and fertilizing clutch 26). 27, the stop position of the leveling device 35) (step S6).

  At the position K2, after confirming that the planting position of the seedling on the rice field G by the planting arm 8 is the position to be the first predetermined position A1 of the reference travel route L01, the driver stops the aircraft. The first predetermined switch 57 is operated, and the position (positioning data) of the aircraft when the first predetermined switch 57 is operated is stored as the first predetermined position A1 (step S7).

  Next, the driver operates the operating lever 25 to the lowered position D, operates the planting and fertilizing clutches 26 and 27 to the transmission state, and enters the reference travel path L01 (step S8). By operating to the right marker position R, the right marker 19 is operated to the action posture (the left marker 19 is the retracted posture) (step S9).

  In the above-described state, on the reference travel route L01, the driver operates the steering handle 20 while visually observing the center mascot 53 and the monitor 39, and travels the aircraft along the index formed on the surface G in the idle travel route LA1. The indicator of the traveling route L02 is formed on the rice field G by the right marker 19 while planting seedlings and supplying fertilizer.

  When the vehicle has reached the position K3 that should be the second predetermined position A2 of the reference travel route L01 after ending the reference travel route L01, the driver has placed the planting position of the seedling on the rice field G by the planting arm 8. When it is confirmed that the second predetermined position A2 of the reference travel route L01 is to be reached, the operation lever 25 is operated to the raised position U to raise the seedling planting device 5 from the surface G (automatic elevation control). The stop state of the part 40, the planting and fertilization clutches 26, 27 are disconnected, the stop position of the leveling device 35) (step S10), and the aircraft is stopped.

Thereafter, when the driver operates the second predetermined switch 58, the position (positioning data) of the aircraft when the second predetermined switch 58 is operated is stored as the second predetermined position A2 (step S11).
When the first and second predetermined positions A1 and A2 are stored as described above, a route (positioning data) connecting the first and second predetermined positions A1 and A2 with a straight line is set by the first setting unit 41. The reference travel route L01 is set and stored (step S12).

  In this case, if a plurality of predetermined positions are stored between the first predetermined position A1 and the second predetermined position A2, the reference travel route L01 is not a straight line but the first and second predetermined positions A1, A2. It is possible to set a curve (a broken line) connecting a plurality of predetermined positions. Thus, when the travel routes L02 to L05 are set as described in [10] to be described later, the travel routes L02 to L05 can also be set to a curve (a broken line) similarly to the reference travel route L01.

[10]
Next, in the working mode of the riding type rice transplanter described in [6] and [7], the processing of the second setting unit 42 after the reference travel route L01 is set when the automatic travel control of the present invention is performed. Will be described with reference to FIGS.

When the reference travel route L01 is set, the following processing is performed in the second setting unit 42 based on the positioning data (based on the positioning data and the map data).
The work end position A4 and the work start position A3 are alternately set at the same position next to the first predetermined position A1 (the position having the same distance as the distance from the flange B to the first predetermined position A1), and the second predetermined position A2 The work start position A3 and the work end position A4 are alternately set at the same position next to (the position having the same distance as the distance from the heel B to the second predetermined position A2) (step S12).

Next, a route connecting the work start position A3 and the work end position A4 with a straight line is set as the travel routes L02 to L05, and along the reference travel route L01 with a predetermined interval W1 on the side of the reference travel route L01 ( The travel routes L02 to L05 are set and stored (in parallel with the reference travel route L01) (step S12).
When the travel routes L02 to L05 are set, the aircraft, the map, and the travel routes L02 to L05 are displayed on the monitor 39 (step S13).

  The predetermined interval W1 is a value substantially equal to the lateral width of the seedling planting device 5, but as shown in FIGS. 4 and 6, when performing the replanting process (traveling paths LB1 to LB4) after this, Predetermined based on the positioning data and the map data so that the lateral width of the planting device 5 remains (particularly so that the lateral width of the seedling planting device 5 remains in the surrounding planting process (traveling route LB1) adjacent to the traveling route L05). An interval W1 is set.

When it is difficult to leave the lateral width of the seedling planting device 5 in the revolving planting process (travel route LB1), the following processing is performed in the second setting unit 42.
When four seedling planting devices 5 of the eight-row planting type are equipped with four minority clutches (not shown) capable of stopping two strips, the number (on the right side of the seedling planting device 5 in the travel route L05) Based on the positioning data and the map data, whether the width of the seedling planting device 5 remains in the turning planting process (travel route LB1) if the minority clutch (2 or 4) is operated in the disengaged state. The predetermined interval W1 is set.
Then, before entering the travel route L05 (before turning LL5 (left direction), which minority clutch is to be operated in the disengaged state is displayed on the monitor 39, the driver applies the minority clutch according to the display on the monitor 39. Operate in the shut-off state.

  In the state shown in FIG. 7, in the traveling route L05, the two small-numbered clutches on the right side of the seedling planting device 5 are operated in the disengaged state. This shows a state in which the lateral width remains, and seedling planting and fertilizer supply are not performed on the right two lanes in the travel route L05.

  As shown in FIG. 7, when the driver finishes the travel route L05 by operating the steering handle 20 and makes a turn LL6 (right direction) to position the machine body at the position K7, the right side of the seedling planting device 5 However, since the seedlings are not planted and the fertilizer is not supplied to the right two items in the travel route L05, the rotation planting process (travel route) In LB1), the seedling planted on the field G in the work process (travel route L05) is not pushed down by the seedling planting device 5 (float 9 or the like).

  As shown in FIGS. 6 and 7 as described above, when the reference travel route L01 and the travel routes L02 to L05 are set, as shown in FIG. 4 based on the reference travel route L01 and the travel routes L02 to L05. In addition, the rotation planting process (travel routes LB1 to LB4) is set.

Thereby, in the leveling setting unit 50, the reference traveling route L01 and the traveling routes L02 to L05 are set as positions where the leveling device 35 is positioned above the field surface G and should be operated to a stop position that does not come into contact with the field surface G. The paths LB1 to LB4 are set as positions to be operated at the operation position where the leveling device 35 is grounded to the surface G.
As described in [11] [12] [13], which will be described later, the leveling device 35 is operated to the stop position by the leveling device operating unit 51 in the travel routes L02 to L05.

[11]
Next, in the working mode of the riding type rice transplanter described in [6] and [7], the travel route L02 from the turn LL2 (right direction) when the automatic travel control of the present invention is performed is shown in FIGS. Description will be made based on (a), (b), and (c).

  As described in [9] and [10] in the previous section, when the turn LL2 (right direction) is entered in the state where the work start position A3, the work end position A4, and the travel routes L02 to L05 are set, based on the positioning data. The distance and time until the aircraft reaches the work start position A3 of the travel route L02 (based on the positioning data and the map data) are calculated by the remaining work calculation unit 46, and the calculation result is displayed on the monitor 39. (Step 14).

  The driver makes a turn LL2 (right direction) by operating the control handle 20 while observing the indicators and the monitor 39 formed on the surface G in the reference travel route L01, and as shown in FIG. When approaching the work start position A3 of the travel route L02, the operation lever 25 is operated to the lowered position D, and the seedling planting device 5 is lowered to the surface G (the operation state of the automatic lifting control unit 40, planting and The cut-off state of the fertilizer clutches 26 and 27, the stop position of the leveling device 35) (step S15), preparation for operating the planting and fertilizer clutches 26 and 27 to the transmission state.

  As shown in FIG. 8B, it is detected that the aircraft has reached the position K4 and has reached the work start position A3 of the travel route L02 based on the positioning data (based on the positioning data and the map data). Then, it is displayed on the monitor 39 that the aircraft has reached the work start position A3 on the travel route L02, and the buzzer 55 is activated (step S16).

Thus, the driver operates the operation lever 25 to the lowered position D, operates the planting and fertilization clutches 26 and 27 to the transmission state, and enters the travel route L02 (step S17).
In this case, as shown in FIGS. 8A and 8B, until the planting and fertilizing clutches 26 and 27 are operated in the transmission state after the machine body approaches the work start position A3 of the travel route L02. Meanwhile, the driver enters the travel route L02 while correcting the position of the airframe by operating the control handle 20 while observing the indicators and the monitor 39 formed on the surface G in the reference travel route L01.

When the aircraft enters the travel route L02 as described above, as shown in FIGS. 8B and 8C, the aircraft is located at a position away from the travel route L02 (between the aircraft and the travel route L02). When the planting and fertilizing clutches 26 and 27 are operated in the transmission state in the state where the difference D1 is generated), the aircraft and the travel route L02 are based on the positioning data (based on the positioning data and the map data). When the presence or absence of the difference D1 is detected and the aircraft is located at a position away from the travel route L02, the position of the travel route L02 is corrected to the position of the aircraft by the correction unit 43 (step S18).
When the correction unit 43 corrects the position of the travel route L02 to the position of the airframe, the second setting unit 42 performs the process described in the previous item [10] again based on the new travel route L02 (step S19). .

  Based on the fact that the planting and fertilization clutches 26 and 27 are operated in the transmission state, the automatic steering section 44 is in the operating state, and based on the positioning data (based on the positioning data and the map data), The steering motor 52 is operated by the automatic steering unit 44 so that the aircraft travels along the travel route L02, and the front wheel 1 and the steering handle 20 are automatically operated (step S20).

When the automatic steering unit 44 is activated, the aircraft, the map, and the travel routes L02 to L05 are not displayed on the monitor 39, it is displayed that the automatic steering unit 44 is activated, and the lamp 54 is displayed. Flashes (step S21).
Accordingly, the driver operates the operation lever 25 to the left marker position L, and operates the left marker 19 to the acting posture (the right marker 19 is the retracted posture) (step S22).

[12]
Next, a travel route L02 in the case where the automatic travel control of the present invention is performed in the work mode of the riding type rice transplanter described in the preceding items [6] and [7] will be described with reference to FIGS.

  When the aircraft enters the travel route L02, based on the positioning data (based on the positioning data and the map data), the distance and time until the aircraft reaches the work end position A4 on the travel route L02 is determined as a remaining work calculation unit. The calculation result is displayed on the monitor 39 (step 23).

  In the travel route L02 (in the operating state of the automatic steering unit 44), the driver visually observes the index and the center mascot 52 formed on the surface G in the reference travel route L01, and the aircraft travels along the travel route L02. In this case, the seedling can be replenished to the seedling platform 10 away from the driver seat 11.

  When the driver operates the steering handle 20, as in the case where it is necessary to greatly correct the direction of the aircraft, the automatic steering unit 44 is stopped based on the voltage change generated in the steering motor 52. When the driver stops operating the steering handle 20 (releases his / her hand from the steering handle 20), the automatic steering unit 44 is activated based on a voltage change generated in the steering motor 52.

  When the aircraft reaches the position K5 and based on the positioning data (based on the positioning data and the map data), it is detected that the aircraft has reached the work end position A4 of the travel route L02. Is reached on the monitor 39, and the buzzer 55 is activated (step S24).

As a result, the driver operates the operation lever 25 to the raised position U to raise the seedling planting device 5 from the surface G (the automatic lifting control unit 40 is stopped, the planting and fertilization clutches 26 and 27 are disconnected). The stop position of the leveling device 35) (step S25).
Based on the planting and fertilization clutches 26 and 27 being operated in the disconnected state, the automatic steering unit 44 is stopped (step S26). In the monitor 39, the aircraft, the map, and the travel routes L02 to L05 are displayed. Is displayed, the fact that the automatic steering section 44 is in an operating state is not displayed, and the lamp 54 is turned off (step S27).

[13]
Next, in the working mode of the riding type rice transplanter described in [6] and [7] above, travel routes L03, L04, and L05 when the automatic travel control of the present invention is performed are based on FIG. 6 and FIG. explain.

After the state described in the previous item [12], the following operations and processes are performed in the same manner as described in the previous item [11].
Turn LL3 (left direction).
Calculation of the distance and time until the machine body reaches the work start position A3 on the travel route L03, and display of the calculation result on the monitor 39 (step S28).
Lowering of the seedling planting device 5 to the surface G by operating the operating lever 25 to the lowered position D (operating state of the automatic lifting control unit 40, planting and shutting off of the fertilization clutches 26, 27, leveling device) 35 stop position) (step S29).
An indication on the monitor 39 that the aircraft has reached the position K6 and the aircraft has reached the work start position A3 on the travel route L03, and the operation of the buzzer 55 (step S30).
Planting and operation of the fertilizer application clutches 26 and 27 by the driver operating the operation lever 25 to the lowered position D (step S31).

As described above, when the turning LL3 (left direction) is finished and the planting and fertilization clutches 26 and 27 are operated in the transmission state, the following operations and processes are performed as described in [11] above.
Correction of the position of the travel route L03 by the correction unit 43 to the position of the aircraft (step S32).
The process described in the preceding item [10] based on the new travel route L03 by the second setting unit 42 (step S33).
Operation of the automatic steering section 44 (step S34).
The display of the airframe, the map, and the travel routes L02 to L05 on the monitor 39, the indication that the automatic steering section 44 is in an operating state, and the blinking of the lamp 54 (step S35).
The acting posture of the right marker 19 (the left marker 19 is retracted) when the driver operates the operation lever 25 to the right marker position R (step S36).

  When the turn LL3 (left direction) and the travel route L03 are completed as described above, the turn LL4 (right direction) and the travel route L04, the turn LL5 (left direction), and the travel route L05 are performed in the same manner.

[14]
Next, the rotation planting process (travel routes LB1 to LB4) will be described with reference to FIGS. 4 and 13 (part 1).

  As described in [8] to [13] above, when the empty travel route LA1, the reference travel route L01, and the travel routes L02 to L05 are terminated and turn LL6 (right direction) is entered, the aircraft, the map, and the travel From the state in which the routes L02 to L05 are displayed on the monitor 39, the travel routes L02 to L05 are hidden, and the aircraft and the map are displayed on the monitor 39 (step S51).

  Based on the positioning data (based on the positioning data and the map data), the same position next to the work end position A4 of the travel route L05 (the position at the same distance as the distance from 畦 B to the second predetermined position A2), The work start position AB3 of the travel route LB1 is set. Based on the positioning data (based on the positioning data and the map data), the distance and time until the aircraft reaches the work start position AB3 of the travel route LB1 is calculated by the work remaining calculating section 46, and the calculation result is calculated. The information is displayed on the monitor 39 (step 52).

  The driver operates the steering handle 20 while observing the rod B and the monitor 39 to turn LL6 (right direction), and when the aircraft approaches the work start position AB3 of the travel route LB1, the operation lever 25 is moved to the lowered position. D is operated to lower the seedling planting device 5 to the surface G (the operation state of the automatic lifting control unit 40, the planting and fertilization clutches 26 and 27 are shut off, the stop position of the leveling device 35) (step S53). ), Preparing to operate the planting and fertilizing clutches 26, 27 to the transmission state.

  When it is detected that the aircraft has reached the position K7 and based on the positioning data (based on the positioning data and the map data), the aircraft has reached the work start position AB3 of the travel route LB1. Is reached on the monitor 39 and the buzzer 55 is activated (step S54).

Thus, the driver operates the operation lever 25 to the lowered position D, operates the planting and fertilization clutches 26 and 27 to the transmission state, and enters the travel route LB1 (step S55).
In this case, as described in the previous item [10], since the traveling routes LB1 to LB4 are set in the leveling setting unit 50 as positions to be operated at the operating positions where the leveling device 35 is grounded to the surface G, the leveling device operation is performed. The leveling device 35 is operated to the operating position by the unit 51 (step S55).

  In the travel route LB1, the driver operates the steering handle 20 while visually observing the kite B and the monitor 39 to cause the aircraft to travel along the kite B, and operates the right and left markers 19 to the retracted posture. In this state, seedlings are planted and fertilizer is supplied while leveling the field G by the leveling device 35.

[15]
Next, the rotation planting process (travel routes LB1 to LB4) will be described with reference to FIGS.

  Based on the positioning data (based on the positioning data and map data), the same position next to the work start position A3 of the travel route L05 (the position at the same distance as the distance from 畦 B to the first predetermined position A1), The work end position AB4 of the travel route LB1 is set. Based on the positioning data (based on the positioning data and the map data), the distance and time until the aircraft reaches the work end position AB4 of the travel route LB1 is calculated by the work remaining calculating section 46, and the calculation result is calculated. The information is displayed on the monitor 39 (step 56).

  Based on the positioning data (based on the positioning data and the map data), when it is detected that the aircraft has reached the work end position AB4 on the travel route LB1, the aircraft has reached the work end position AB4 on the travel route LB1. Is displayed on the monitor 39, and the buzzer 55 is activated (step S57).

  Accordingly, the driver operates the operation lever 25 to the raised position U to raise the seedling planting device 5 from the surface G (stopped state of the automatic lifting and lowering control unit 40, planting and disengagement state of the fertilization clutches 26 and 27). , Stop position of the leveling device 35) (step S58), and while turning the steering handle 20 while visually observing the rod B and the monitor 39, turn and reverse, etc., to position the aircraft at position K8.

In the state where the aircraft is located at the position K8, the driver operates the operation lever 25 to the lowered position D to lower the seedling planting device 5 to the surface G (the operation state of the automatic lifting control unit 40, planting and The fertilization clutches 26 and 27 are disconnected, the leveling device 35 is stopped) (step S59), the operation lever 25 is operated once again to the lowered position D, and the planting and fertilization clutches 26 and 27 are operated to the transmission state. LB2 is entered (step S60).
In this case, as described in the previous item [10], since the traveling routes LB1 to LB4 are set in the leveling setting unit 50 as positions to be operated at the operating positions where the leveling device 35 is grounded to the surface G, the leveling device operation is performed. The leveling device 35 is operated to the operating position by the unit 51 (step S60).

  In the travel route LB2, the driver operates the control handle 20 while visually observing the kite B and the monitor 39 to cause the aircraft to travel along the kite B, and operates the right and left markers 19 to the retracted posture. In this state, seedlings are planted and fertilizer is supplied while leveling the field G by the leveling device 35.

In the above-described state, if the front part of the fuselage reaches 畦 B before reaching the work end position AB4 on the travel route LB1, and the vehicle cannot move forward any further, the driver can Before reaching the work end position AB4, the operation lever 25 is operated to the raised position U to raise the seedling planting device 5 from the surface G (the automatic lifting control unit 40 is stopped, the planting and fertilizing clutches 26, 27 The shut-off state, the stop position of the leveling device 35), while turning the steering handle 20 while visually observing the kite B and the monitor 39, the vehicle is turned and moved backward, and the airframe is positioned at the position K8.
Before the aircraft reaches the work end position AB4 of the travel route LB1, the portion where the seedling has not been planted due to the driver operating the operation lever 25 to the raised position U is planted by hand.

  As shown in FIG. 4, based on positioning data (based on positioning data and map data), a work end position AB4 of the travel route LB2 and a work end position AB4 of the travel route LB3 are set. As described above, the seedling planting device 5 is lifted, turned, and moved backward at the work end position AB4 of the travel routes LB2 and LB3. At the positions K9 and K10, the seedling planting device 5 is lowered, planted, and fertilized. The operation of the clutches 26 and 27 to the transmission state (operation to the operation position of the leveling device 35) and the planting of the seedlings by hand to the part where the seedlings were not planted are performed.

[16]
Next, the replenishment calculating unit 47 will be described.
Since there is a limit to the amount of seedlings that can be mounted on the aircraft in a riding type rice transplanter, if the remaining amount of seedlings that are mounted on the aircraft decreases, it is necessary to stop at the shore and replenish the aircraft with seedlings from 畦 B . In this case, since it is inefficient to carry the work such as carrying the seedling to the position of cocoon B where the aircraft has stopped after the aircraft stops at the heel, it is necessary to replenish the aircraft with the seedling from heel B It is necessary to place a seedling at the predicted position of heel B before the aircraft arrives.

  As shown in FIG. 2, the remaining amount of seedlings is detected to detect how many seedlings are placed on the reserve seedling stage 32 and how much seedlings are placed on the seedling stage 10. Unit 59 is provided, and the detected value of the seedling remaining amount detection unit 59 is input to the control device 23. As a result, when the aircraft advances as it is, it is necessary to supply the seedling from the kite B to the position of the kite B. The consumption rate of the seedling per unit travel distance, the positioning data, and the remaining seedling detection unit 59 Based on the detected value, the replenishment calculating unit 47 calculates.

For example, as shown in FIG. 3, the calculation result of the replenishment calculation unit 47 is displayed on the monitor 39 as the positions B1 and B2 of the bag B.
As a result, the driver only has to transmit the calculation results (positions B1 and B2 of the heel B) displayed on the monitor 39 to other workers, and the other workers need to replenish seedlings from the heel B to the aircraft. The seedlings can be carried and placed before the aircraft arrives at positions B1 and B2 of the heel B predicted as follows. In this case, the calculation result of the replenishment calculating unit 47 may be automatically transmitted to the portable terminal held by another worker.

[17]
Next, the supply setting unit 48 and the supply device operation unit 49 will be described.
As shown in FIG. 15, a supply device 60 that sprays and supplies a chemical such as a herbicide on the rice field G may be connected to the rear portion of the seedling planting device 5. In this case, there are a position (range) for supplying the medicine and a position (range) for not supplying the medicine, instead of supplying the medicine to all parts of the surface G. This is not to always operate the supply device 60 to supply the drug to the surface G, but to operate or stop the supply device 60 to avoid the excessive supply of the drug to the surface G, as much as possible. This is to supply the surface G uniformly.

  As shown in FIG. 16, in the reference travel route L01, the supply device 60 is operated by the supply device operation unit 49 every time a predetermined distance is traveled based on the positioning data (based on the positioning data and the map data). The medicine is supplied to the surface G by being operated in the state and in the stopped state, and the position (range) B <b> 3 where the medicine is supplied is stored in the supply setting unit 48.

Next, as described in [10] above, when the travel routes L02 to L05 are set with respect to the reference travel route L01, as shown in FIG. 16, the medicine is supplied to the travel routes L02 to L05. The position (range) B4 is stored in the supply setting unit 48.
In this case, the vehicle travels based on the point that it is different from the position (range) B3 to which the medicine is supplied in the reference travel route L01 and that the medicine is not supplied at a position close to the heel B. A position (range) B4 for supplying the medicine is stored in the supply setting unit 48 for the routes L02 to L05.

  As a result, when the aircraft reaches the position (range) B4 at which the medicine is supplied in the travel routes L02 to L05, the supply device operating unit 49 supplies the supply device based on the positioning data (based on the positioning data and the map data). Since the medicine is supplied to the surface G by operating 60 to the operating state, the supply device 60 is operated to the stop state by the supply device operation unit 49 when the machine passes the position (range) B4 for supplying the medicine. .

[First Alternative Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention], when the planting and fertilizing clutches 26 and 27 are operated in the transmission state, the automatic steering unit 44 is activated, and the planting and fertilizing clutches 26 and 27 are disconnected. However, instead of this, a manual switch (not shown) that activates and stops the automatic steering unit 44 (manual operating tool) is configured. May be provided.

  With the configuration as described above, when the seedling planting device 5 is lowered to the surface G and the planting and fertilization clutches 26 and 27 are operated in the disconnected state, when the manual switch 56 is operated to the operating position, automatic operation is performed. The direction portion 44 is configured to be in an activated state, and the automatic steering portion 44 is configured to be in a stopped state when the manual switch 56 is operated to the stop position.

  Accordingly, as described in [9] and [10] above, when the automatic steering unit 44 is activated by the manual switch in the state where the reference traveling route L01 and the traveling routes L02 to L05 are set, FIG. Steps S18 to S21 and Steps S32 to S35 in FIG. 12 are performed. When the automatic steering unit 44 is stopped by the manual switch, Steps S26 and S27 in FIG. 11 are performed.

When the manual switch is provided, the automatic steering unit 44 does not have to be in the operating state in all of the travel routes L02 to L05.
Thus, for example, as shown in FIG. 3, when entering the travel route L02 from the turn LL2 (right direction), the manual switch is operated to the stop position (the automatic steering unit 44 is stopped), and the driver Operates the control handle 20 while visually observing the center mascot 53 and the monitor 39, and causes the aircraft to travel along the index formed on the surface G in the reference travel path L01.

  When the number of seedlings on the seedling platform 10 decreases, the driver operates the manual switch to the operating position (the operating state of the automatic steering unit 44), and replenishes the seedling mounting platform 10 with the seedlings away from the driving seat 11. When the replenishment of the seedlings to the seedling platform 10 is completed, the driver operates the manual switch to the stop position (the automatic steering unit 44 is stopped).

  In the case where the manual switch is provided, when the planting and fertilizing clutches 26 and 27 are operated to the transmission state in the state where the manual switch is operated to the operation position, the automatic steering unit 44 is activated and the manual switch 56 is operated. When the planting and fertilizing clutches 26 and 27 are operated in the disconnected state in the state in which the automatic steering unit is operated in the operating position, the automatic steering unit 44 is in the stopped state, and the manual switch is operated in the stopped position. If it does, you may comprise so that the automatic steering part 44 may be in a stop state irrespective of the transmission and interruption | blocking state of planting and fertilization 26,27 clutch.

[Second Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention], when the reference travel route L01 is set, as described in [9] above, the airframe is set in the first and second predetermined modes. The first and second predetermined positions A1 and A2 are set based on the map data in the information storage unit 45, instead of setting (tating) the reference travel route L01 by being stored at the positions A1 and A2. The reference travel route L01 may be set.
With this configuration, the reference travel route L01 and the travel routes L02 to L05 can be set before the aircraft enters the paddy field, and the automatic steering unit 44 can be brought into an operating state from the reference travel route L01.

As described above, when the reference travel route L01 is set based on the map data in the information storage unit 45, the overall shape of the paddy field, the number of turns on the coast, the directions of the travel routes L02 to L05, the paddy field Set the position of entrance and exit, paddy field ventilation and sunlight, depth of paddy field, rotating planting process (running route LB1 to LB4) by single or double (FIG. 4 is a single state), etc. By doing so, the optimum reference travel route L01 and travel routes L02 to L05 can be configured.
When it is configured to set the reference travel route L01 based on the map data in the information storage unit 45, when the direction and position of the aircraft are largely changed by the driver's intention during the travel routes L02 to L05, It can be configured such that the optimum travel routes L02 to L05 are reset according to the direction and position.

When configured to set the reference travel route L01 based on the map data in the information storage unit 45, it is not a square paddy field in a plan view as shown in FIG. 3, but a trapezoidal paddy field in a plan view. What is necessary is just to comprise as follows about the deformed paddy field.
After the reference travel route L01 is set based on the map data in the information storage unit 45, the work start position A3 and the work end position A4 of the travel routes L02 to L5 are separated from the bag B by a predetermined distance based on the map data. To set travel routes L02 to L05.
Thus, the travel routes L02 to L05 are set along the reference travel route L01, but the reference travel route L01 and the travel routes L02 to L05 are not the same length. The reference traveling route L01 and the traveling routes L02 to L05 can be set to be curved along the deformed paddy paddy B instead of a straight line.

[Third Another Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment], the information storage unit 45 may not be provided.
With this configuration, since map data of 畦 B cannot be obtained, the aircraft is located at the first and second predetermined positions A1 and A2 and stored to set the reference travel route L01, and then the first and second The distance from the predetermined positions A1, A2 to 畦 B is input, and the positioning data of 畦 B is set.
When the paddy field is scraped by the tractor, if the tractor has a positioning unit and an information storage unit, the map data of the ridge B obtained by the scraping process by the tractor is used as the riding type rice transplanter (control device 23) of the present invention. ) May be input as positioning data of 畦 B.

[Fourth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention] to [Third Another Mode of Carrying Out the Invention], the airframe, the map, and the traveling in steps S21 and S35 of FIG. 11 and FIG. When the routes L02 to L05 are not displayed on the monitor 39, during this time, the seedling planting state of the seedling planting device 5 is photographed with a camera, and a photographed image of the seedling planting state is displayed on the monitor 39. It may be configured.

[Fifth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] to [Fourth Alternative Embodiment of the Invention], the remaining amount of fuel mounted in a fuel tank (not shown) is determined. By providing a fuel remaining amount detecting unit (not shown) for detecting and a fertilizer remaining amount detecting unit (not shown) for detecting the remaining amount of fertilizer in the hopper 13, when the aircraft advances as it is, at which position of heel B If it arrives, the fuel or fertilizer needs to be replenished from 機 B to the fuel and fertilizer consumption rate per unit mileage, positioning data and the remaining amount of fuel detection unit, and the detected value of the remaining fertilizer detection unit Based on this, the replenishment calculating unit 47 may be configured to calculate.

[Sixth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Fifth Another Mode for Carrying Out the Invention], the planting and fertilizing clutches 26 and 27 are transmitted by the same electric motor 28. Instead of operating in the disconnected state, the planting clutch 26 and the fertilizing clutch 27 may be configured to be independently operated in the transmission and disconnected states by separate electric motors.

  With the configuration as described above, the planting clutch 26 is always operated in the transmission state in the reference travel route L01, the travel routes L02 to L05, and the travel routes LB1 to LB4 (while the seedling is always planted). ) For example, based on the sunny position and bad position, well-ventilated position and bad position, last year yield good position and bad position, etc., so as to supply fertilizer to the rice field G or not to supply fertilizer The following processing can be performed.

  When the base travel route L01 and the travel routes L02 to L05 are set before the aircraft enters the paddy field with the positioning unit 37 and the information storage unit 45, with respect to the reference travel route L01 and the travel routes L02 to L05, A position (range) for supplying fertilizer is set and stored in the supply setting unit 48 based on the sunny position and bad position, the well-ventilated position and bad position, the last-good yield position and bad position, etc. .

  Thereby, in the reference | standard driving | running route L01 and driving | running route L02-L05, if the body reaches the position (range) which supplies fertilizer, based on positioning data (based on positioning data and map data), supply apparatus operation part 49, the fertilizer clutch 27 is operated in the transmission state, and fertilizer is supplied to the table G. When the machine passes the position (range) where the fertilizer is supplied, the fertilizer clutch 27 is brought into the disconnected state by the supply device operation unit 49. Operated.

  When the planting and fertilization clutches 26 and 27 are operated in the transmission state in the reference travel route L01, the travel routes L02 to L05, and the travel routes LB1 to LB4 as in the above-mentioned [Mode for Carrying Out the Invention] If the planting clutch 26 and the fertilization clutch 27 are configured so that they can be independently operated in the transmission and cut-off state by separate electric motors, the planting clutch 26 is operated after the fertilization clutch 27 is operated in the transmission state. It can be configured to be operated in a transmission state.

  This is because when the fertilizer clutch 27 is operated in the transmission state, it takes a little time for the fertilizer fed from the feeding portion 12 to reach the surface G (because there is a time lag), so the fertilizer clutch 27 is operated in the transmission state. After that, the planting clutch 26 is configured to be operated in a transmission state so that the supply of fertilizer to the rice field G and the planting of seedlings to the rice field G can be started simultaneously.

[Seventh Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Different Form of the Invention] to [Sixth Different Form of the Invention], the steering wheel 20 is not operated by the steering motor 52, but the front wheel 1 is operated. A steering motor 52 operates a pitman arm (not shown) for steering (corresponding to a steering device) and an operating cylinder (not shown) for power steering (corresponding to a steering device).

[Eighth Embodiment of the Invention]
In the above-mentioned [Mode for Carrying Out the Invention] [First Another Mode for Carrying Out the Invention] to [Seventh Another Mode for Carrying Out the Invention] (based on positioning data and positioning data) Based on the map data, the travel speed of the airframe and the slip ratio of the rear wheel 2 may be calculated to perform the following processing.

(1)
In the seedling planting device 5, the inter-strain, planting depth, the amount of seedling taken by the planting arm 8, and the lateral feed speed of the seedling setting table 10 are automatically adjusted. In the fertilizer applicator 17, the feed amount of the fertilizer is automatically adjusted. In the supply device 60, the spraying amount (supply amount) of the medicine is automatically adjusted.

(2)
When the slip ratio increases in the reference travel route L01 and the travel routes L02 to L05, the leveling device 35 at the stop position is operated to the operating position so that the leveling device 35 performs leveling of the surface G.

  The present invention can be applied not only to a riding type rice transplanter equipped with a seedling planting device, but also to a riding type direct seeding machine equipped with a direct sowing device (corresponding to a working device) for supplying seed rice to a rice field.

5 Working Device 20 Steering Device 26 Working Clutch 37 Positioning Unit 39 Display Device 41 First Setting Unit 42 Second Setting Unit 43 Correcting Unit 44 Automatic Steering Unit 45 Information Storage Unit A1 First Predetermined Position A2 Second Treatment Position L01 Reference Travel Route L02-L05 Traveling route W1 Predetermined interval

Claims (6)

A positioning unit equipped with a GNSS module and outputting positioning data of the aircraft;
A first setting unit for setting a reference travel route connecting the first predetermined position and the second predetermined position;
A second setting unit that sets a travel route along the reference travel route at a predetermined interval on the side of the reference travel route;
Ends traveling along the reference traveling route, turns and enters the adjacent traveling route, and finishes traveling along one traveling route, turns and enters the adjacent traveling route In a state where the aircraft is located at a position away from the travel route, a correction unit that corrects the position of the travel route to the position of the aircraft,
A work vehicle including an automatic steering unit that automatically operates a steering device so that the airframe travels along the travel route.   The work vehicle according to claim 1, further comprising an information storage unit that stores map data of the work place. It has a working clutch that can transmit power to and cut off from the working device provided on the fuselage,
Ends traveling along the reference traveling route, turns and enters the adjacent traveling route, and finishes traveling along one traveling route, turns and enters the adjacent traveling route In the state
When the work clutch is operated in the transmission state, a difference between the position of the aircraft and the travel route is detected, and when the aircraft is located at a position away from the travel route, the position of the travel route is determined. The work vehicle according to claim 1, wherein the correction unit is configured to correct the position of the vehicle.   The automatic steering unit is operated when the working clutch is operated in a transmission state, and the automatic steering unit is stopped when the working clutch is operated in a disconnected state. The work vehicle according to claim 3, wherein: A manual operating tool for artificially operating and stopping the automatic steering section is provided,
Ends traveling along the reference traveling route, turns and enters the adjacent traveling route, and finishes traveling along one traveling route, turns and enters the adjacent traveling route In the state
When the manual operation tool is operated and the automatic steering unit is in an activated state, a difference between the position of the aircraft and the travel route is detected, and the aircraft is located at a position away from the travel route, The work vehicle according to claim 1, wherein the correction unit is configured to correct the position of the travel route to the position of the airframe. A display device for displaying the airframe and the reference travel route or the travel route;
The display device is configured such that when the automatic steering unit is stopped, the display device is in a display state, and when the automatic steering unit is in an operating state, the display device is in a non-display state. The work vehicle according to 4 or 5.

Images