JP2012060909A - Paddy field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paddy field working machine which has less likelihood of wrong operations of the operation to change the settings in an automatic control operation, and which can be operated adequately when it is necessary to be operated, while a display means that displays a variety of display information is disposed on a part that is easy for an operator to watch.SOLUTION: A steering part panel 62 in a traveling machine has a steering handle 19 and the display means F that displays a variety of pieces of display information, the display means F is disposed in a condition to locate in front of a handle post 83 in the steering handle 19, a control setting means 65 for changing the setting in the automatic control operation by a manual operation is disposed in a condition to locate in a position near the display means F and on a lateral side of the handle post 83, and a lid body 66 is provided which freely opens and closes in a closed state covering an upper side of the control setting means 65 and an open state that opens the upper side.

Description

  The present invention has a paddy field work device connected to the rear part of the traveling machine body, and a display means for displaying various display information including a steering handle and a setting state in an automatic control operation for paddy field work on a control unit panel in the traveling machine body. It is related with the paddy field machine provided with.

  Conventionally, in the paddy field machine configured as described above, for example, various display information such as a marker display that indicates which of the left and right drawing markers is in the working posture is left or right and an hour meter that indicates the operation time are displayed. Various guidance display units are arranged on the steering unit panel in a state of being positioned on the front side of the handle post in the steering handle, and an auto marker switch for instructing on / off of the left / right automatic switching control for switching the left and right for each travel by turning the drawing marker, etc. Control setting means for changing the setting state in the automatic control operation by manual operation is provided on the side of the handle post in such a state that the upper part thereof is always open (for example, Patent Document 1). reference.).

JP 2002-337565 A

  In the above configuration, while the display means is arranged at a place where the operator can easily see, the control setting means such as an auto marker switch is located on the side of the handle post, that is, on the lower side of the steering handle, and By providing it near the operator, it becomes easy to operate. However, in the above-mentioned conventional configuration, since the upper part of the control setting means is always opened, for example, steering When the steering wheel is operated or when the operator carelessly puts the hand removed from the steering wheel, the control setting means may be erroneously operated, and there is room for improvement.

  An object of the present invention is to provide a display means for displaying various types of display information in a place where an operator can easily see the display, while performing an operation for changing a setting state in an automatic control operation with a low risk of erroneous operation. And it is in the point which provides the paddy field machine which can be performed exactly when it should operate.

The paddy field work machine according to the present invention has a paddy field work device connected to the rear part of the traveling machine body, and displays various kinds of display information including a steering handle and a setting state in an automatic control operation for paddy field work on a control unit panel in the traveling machine body. Display means for displaying, the first characteristic configuration of which
The display means is disposed on the steering panel in a state of being positioned on the front side of a handle post in the steering handle;
A control setting means for changing the setting state in the automatic control operation by manual operation is disposed on the control unit panel in a state in the vicinity of the display means and on the side of the handle post. And
A lid that can be opened and closed in a closed state covering the upper side of the control setting means and an opened state opening the upper side is provided.

  According to the first characteristic configuration, since the display means is arranged on the control panel while being positioned on the front side of the handle post in the steering handle, the operator can easily see the display means through the space portion in the steering handle. Become.

  Also, the control setting means for changing the setting state in the automatic control operation by manual operation is provided on the control unit panel in a state in the vicinity of the display means and on the side of the handle post. It is provided at a position close to the operator and easy for the operator to operate by hand. In addition, since the lid that can be opened and closed is provided in a closed state that covers the upper side of the control setting means and an open state that opens the upper side, when it should not be operated, it is possible to perform an erroneous operation by covering it with the lid. When the operation is to be performed, the control setting means can be appropriately operated in a state in which the operator is conscious by opening the lid.

  Therefore, an operation for changing the setting state in the automatic control operation should be performed in a state where there is little risk of erroneous operation while arranging display means for displaying various display information in a place where the operator can easily see. It has become possible to provide paddy field machines that can be performed accurately.

In addition to the first feature configuration, the second feature configuration of the present invention is a control on / off command tool in which the setting means for control commands one of a state in which the automatic control operation is performed and a state in which the automatic control operation is not performed. A fine adjustment commanding tool for instructing fine adjustment of the operation when executing the automatic control operation,
The lid is configured to cover an upper portion of the fine adjustment command tool, and is configured to always open an upper portion of the control on / off command tool.

  According to the second feature configuration, since the lid body is configured to cover the upper part of the fine adjustment command tool, when the automatic control operation should not be finely adjusted, an erroneous operation is performed. Can be avoided, and when fine adjustment should be performed, the lid can be opened and fine adjustment operation can be performed appropriately. Incidentally, in the fine adjustment operation or the like, if there is an erroneous operation, the subsequent readjustment operation becomes troublesome.

  On the other hand, since the upper part of the control on / off command tool is always opened, for example, when running a work, the work run is executed even though it is necessary to switch to a state in which an automatic control operation should be executed. After that, if it turns out that a state in which the automatic control operation is not executed is instructed, or conversely, a state in which the automatic control operation is not executed should be instructed, the automatic control operation is executed. When it is found that the state to be executed is instructed, the operator can immediately operate the control on / off command tool without performing troublesome operations such as opening the lid. By the way, the control on / off command of the control on / off command tool can be handled by a simple operation compared to the fine adjustment operation.

  Therefore, for the fine adjustment command tool that is troublesome for the subsequent readjustment operation if there is an erroneous operation, the control on / off command tool that can be dealt with by a simple operation of the control on / off command while preventing the erroneous operation by the lid. As for, by always keeping the upper part open, the operation can be easily performed and the operability is improved.

  According to a third characteristic configuration of the present invention, in addition to the first characteristic configuration or the second characteristic configuration, a cover portion that covers the handle post is positioned between the steering handle and the control unit panel, and the control setting unit is positioned. The side wall on the side to be operated is close to the handle post, and the side wall on the opposite side is away from the handle post, and is formed asymmetrically with respect to the handle post in the longitudinal direction of the body. It is in.

  According to the third characteristic configuration, since the lateral side wall on the side where the control setting means is located is formed so as to be close to the handle post, the area for arranging the control setting means on the control panel is flat. A wide area can be secured in the state, and the various command means in the control setting means can be made large and easy to operate.

  In addition, since the opposite lateral side wall is formed so as to be far from the handle post, it is possible to widen the entire lateral width of the cover portion to secure an internal space and to incorporate various operation mechanisms. .

  Therefore, it is possible to make the control setting means easy to operate while securing the internal space of the cover portion and incorporating various operation mechanisms.

  According to a fourth feature configuration of the present invention, in addition to any one of the first feature configuration to the third feature configuration, the automatic control operation is performed to adjust a vertical position of a leveling device provided between the traveling machine body and the paddy field work device. It is the point that it is operation.

  According to the fourth feature configuration, since the vertical position adjustment operation of the leveling device provided between the traveling machine body and the paddy field work device is performed, the leveling action by the leveling device can be always performed in a good state. It becomes.

  Then, a setting for control for changing the setting state for the vertical position adjustment operation of such a leveling device, for example, a setting state such as an adjustment result obtained by finely adjusting the target value of the vertical position adjustment of the leveling device by manual operation Since the means is covered by the lid, when the steering handle is operated or when the operator carelessly places the hand removed from the steering handle, the target value for adjusting the vertical position of the leveling device is set by mistake, for example. It is possible to avoid disadvantages such as inadvertently changing the setting state of the vertical position adjustment operation of the leveling device such as becoming inappropriate.

  According to a fifth characteristic configuration of the present invention, in addition to any of the first characteristic configuration to the third characteristic configuration, when the automatic control operation causes the traveling machine body to turn, the end of the turning movement is determined and a work clutch is determined. This is an automatic control operation for turning to enter and operate.

  According to the fifth feature configuration, when the traveling body is turned, the automatic control operation for turning is performed to determine the end of turning and enter the operation clutch. When the paddy field work in a certain work process is completed and the paddy field is turned at the shore, the operator is burdened when turning to start the paddy field work in the next work process. It can be reduced.

  Then, a control setting means for manually changing a setting state for such an automatic control operation for turning, for example, a setting state for changing a timing for engaging and operating the work clutch, is covered by the lid. Therefore, when operating the steering handle or when the operator carelessly puts the hand removed from the steering handle, the timing for entering and operating the work clutch due to incorrect operation becomes inappropriate. It is possible to avoid disadvantages such as an unexpected change in the setting state of the automatic control operation.

It is a side view showing the whole riding type paddy field machine. It is a side view which shows a paddy field working apparatus. It is a front view which shows a paddy field working apparatus. It is a top view which shows the drive structure of a paddy field working apparatus. It is a top view which shows the support structure of a grounding float and a leveling rotor. (A) is a side view showing a state where the leveling rotor is lowered, and (b) is a side view showing a state where the leveling rotor is raised. It is a control block diagram. It is a top view which shows a display apparatus. (A) is a figure which shows the display state of the display apparatus in planting work, (b) is a figure which shows the display state of the display apparatus in turning driving | running | working. It is a figure which shows the display state of the display apparatus in the setting state of a setting inclination angle. It is a top view of a control part panel. It is the perspective view seen from the front upper part of the control part panel. It is a top view of the setting operation part for control of the state which open | released the cover body. It is a top view which shows the driving state at the time of turning at the shore. It is a top view for demonstrating operation | movement of automatic planting control. It is a flowchart which shows the operation state of a center mascot display lamp. It is a top view of the control part panel of another embodiment. It is a top view of the control part panel of another embodiment.

  Hereinafter, the case where the embodiment of the paddy field machine concerning the present invention is applied to the riding type rice transplanter as a paddy field machine is described based on a drawing.

[1] (Overall configuration)
As shown in FIG. 1, the riding type rice transplanter according to the embodiment of the present invention is equipped with a pair of left and right steering operations and front wheels 1 and 1 that can be driven, and a pair of left and right rear wheels 2 and 2 that can be driven. A self-propelled traveling machine body as the machined body, and a seedling planting device 10 as a paddy field work device connected to the rear part of the vehicle body frame 3 of the traveling machine body via a link mechanism 4. A fertilizer application device 20 equipped with a fertilizer tank 21 provided at the rear is provided.

  The traveling machine includes an engine 5, a transmission case 6, a front wheel drive case 7 that supports a pair of left and right front wheels 1, 1 and a rear wheel drive case 8 that supports a pair of left and right rear wheels 2, 2. A front wheel drive case via a transmission mechanism such as a hydrostatic continuously variable transmission (not shown) or a sub-transmission (not shown), which is provided in the transmission case 6 with the driving force output from the engine 5. 7 and the rear wheel drive case 8 to drive the pair of left and right front wheels 1, 1 and the pair of left and right rear wheels 2, 2. The traveling machine body includes a machine body control unit 9 equipped with a driver's seat 9a. The speed change operation of the continuously variable transmission is configured by a manual operation of a speed change lever 18 provided in the airframe control unit 9.

  The link mechanism 4 is constituted by a parallel quadruple link having upper and lower links 4a and 4b, and is swinged up and down with respect to the vehicle body frame 3 by a hydraulic cylinder 31, thereby causing the seedling planting device 10 to move. The three grounding floats 11, 12 positioned side by side in the lateral direction of the vehicle body are moved up and down to the descending working position where each grounding float 11, 12 is raised from the field G and the ascending non-working position. Manipulate.

  When the seedling planting device 10 is lowered to the lowering operation position and the traveling machine body is traveled, the seedling planting device 10 is driven by the driving force from the engine 5, and the rear portion of the seedling planting device 10 is placed laterally in the vehicle body. Seedlings are planted on the rice field G by eight seedling planting mechanisms 13 (see FIG. 4) positioned side by side.

As shown in FIG. 1, the fertilizer application apparatus 20 includes a fertilizer tank 21, a feeding portion 22 provided continuously at a lower portion of the fertilizer tank 21, and an electric motor in which an air outlet is communicated with a fertilizer discharge portion of the feeding portion 22. A blower 23 is provided. The feeding unit 22 includes eight fertilizer discharge ports arranged in the lateral direction of the vehicle body, and each fertilizer discharge port is arranged in the lower part of the seedling planting device 10 in the horizontal direction of the vehicle body. A corresponding one of them (see FIG. 2) is connected via a fertilizer supply hose 25. The feeding unit 22 is driven by power from the engine 5.
When the fertilizer in the fertilizer tank 21 is low, the fertilizer application device 20 is provided with a fertilizer shortage sensor S1 for detecting that, and the fertilizer supply path is provided with a fertilizer clogging sensor S2 for detecting that the fertilizer is clogged. (See FIG. 7).

The seedling planting device 10 will be described.
As shown in FIG. 2, the seedling planting device 10 includes eight seedling planting mechanisms 13, three grounding floats 11, 12, seedling placement, by a frame 14 configured to include a main frame 14 a that faces the vehicle body. It is configured to support the table 15 and the like.

  As shown in FIG. 4, the frame 14 of the seedling planting device 10 includes the main frame 14 a, and also includes a feed case 16 attached to a central portion of the main frame 14 a in the lateral direction of the vehicle body. Four planting drive cases 17 extended rearward of the vehicle body are provided. The four planting drive cases 17 are arranged at a predetermined interval in the lateral direction of the vehicle body.

  Each seedling planting mechanism 13 is arranged so as to be positioned one by one on both sides of the rear end of each planting drive case 17 and is rotatably supported on the rear end of the corresponding planting drive case 17. Yes. Each seedling planting mechanism 13 includes a rotary rotor 13b that is rotatably supported by a planting drive case 17 via a rotary support shaft 13a, and a planting arm 13c that is rotatably provided at both ends of the rotary rotor 13b. ing.

When each seedling planting mechanism 13 is driven, the tip of the planting claw 13d provided on each planting arm 13c draws a rotational trajectory and reciprocates up and down between the lower end of the seedling table 15 and the rice field G. A block corresponding to one strain from the lower end of the mat-like seedling placed on the seedling stage 15 alternately by the planting claws 13d of one planting arm 13c and the planting claws 13d of the other planting arm 13c. A seedling planting exercise is performed in which the seedlings are taken out and the block seedlings are brought into the rice field G and planted.
The seedling planting device 10 is provided with a seedling shortage sensor S3 (see FIG. 7) that detects when the remaining seedlings on the seedling platform 15 are low.

  1 to 5 are omitted for easy understanding of the drawings, but as shown in FIG. 7, the center line in the next planting operation process is placed on the left and right sides of the seedling planting device 10 in the field. A rotary marker 52 for drawing is provided so as to be switched between an action posture protruding outward by the operation of the electric motor 53 and a retraction posture retracting toward the inward side of the machine body.

  The power of the engine 5 is transmitted to the front wheels 1 and the rear wheels 2 through a transmission mechanism such as a continuously variable transmission in the transmission case 6, and a planting clutch as a work clutch that can be freely turned on and off by the electric motor 57a. 57 (refer to FIG. 7) and the PTO shaft 54 (refer to FIG. 1) are input to the feed case 16, and the driving force is transmitted from the feed case 16 via the transmission shaft 33 (refer to FIG. 4) to each clutch 87. Is transmitted to the input shaft 17a of the planting drive case 17, and the driving force of the input shaft 17a is transmitted to the rotary support shaft 13a via the transmission chain 34, and each seedling planting mechanism 13 is driven. Further, the power of the engine 5 is transmitted to the feeding portion 22 of the fertilizer application device 20 through a fertilization clutch 58 (see FIG. 7) that can be freely turned on and off by an electric motor 58a.

  As shown in FIG. 5, each grounding float 11, 12 includes mounting brackets 11 a, 12 a provided at the upper part on the rear end side. The mounting brackets 11a and 12a of the grounding floats 11 and 12 are respectively connected to a pair of left and right support arms 37 and 37 extending from a single float support shaft 36 in the lateral direction of the vehicle body toward the rear of the vehicle body. 7)) is supported rotatably around. The float support shaft 36 is rotatably supported with respect to the frame 14 of the seedling planting device 10 via a bracket (not shown).

  Accordingly, the grounding floats 11 and 12 are supported so as to swing up and down separately around the axis P with respect to the frame 14 of the seedling planting device 10. The front end side of each grounding float 11, 12 is connected to the frame 14 of the seedling planting device 10 through a link mechanism (not shown) so as to be able to move up and down, and the seedling planting device 10 is raised to the non-working position. In such a case, the suspension is supported by the link mechanism so as not to drastically drop from the frame 14.

As shown in FIG. 5, the float support shaft 36 includes a planting depth adjustment lever 40 that extends from an intermediate portion in the lateral direction of the vehicle body toward the back side of the seedling support 15 so as to be integrally rotatable. ing. By adjusting the planting depth adjustment lever 40 around the axis of the float support shaft 36 along the guide groove of the lever guide 41, the float support shaft 36 rotates with respect to the frame 14 to support each support. The arm 37 can be swung up and down to change the mounting height of the grounding floats 11 and 12 with respect to the frame 14 on the rear end side.
Then, by engaging the planting depth adjusting lever 40 in the positioning recess provided in the lever guide 41, the planting depth adjusting lever 40 is locked at the adjustment position by the lever guide 41, and the float support shaft 36. Can be maintained against the grounding reaction force acting on the grounding floats 11 and 12 at the mounting height where the rear end sides of the grounding floats 11 and 12 are changed.

  That is, by adjusting the planting depth adjusting lever 40 around the axis of the float support shaft 36 and locking it by the lever guide 41, the seedling planting device 10 set by the grounding floats 11 and 12 is set. The ground height can be changed and set, and the planting depth by the eight seedling planting mechanisms 13 can be set to a planting depth corresponding to the operation position of the planting depth adjusting lever 40.

[2] (Configuration of automatic lift control)
Next, the structure for performing automatic raising / lowering control about the seedling planting apparatus 10 is demonstrated.
As shown in FIG. 7, the rear part of the center ground float 12 around the horizontal axis P is supported by a support arm 37 so as to be swingable up and down, and a potentiometer type float height for detecting the height of the ground float 12. The sensor 42 is provided, and the height of the center grounding float 12 with respect to the seedling planting device 10 is detected by the detection value of the float height sensor 42 while the grounding float 12 follows the surface G as the aircraft advances. In other words, the height of the seedling planting device 10 from the surface G can be detected. Accordingly, the ground contact float 12 at the center is configured to function as a sensor float that detects the height of the seedling planting device 10.

  The hydraulic cylinder 31 is provided with a control valve 44 for supplying and discharging hydraulic oil. When the hydraulic oil is supplied to the hydraulic cylinder 31 by the control valve 44, the hydraulic cylinder 31 contracts and the seedling planting device is operated. When 10 rises and hydraulic oil is discharged from the hydraulic cylinder 31 by the control valve 44, the hydraulic cylinder 31 is extended and the seedling planting device 10 is lowered.

  Then, the detection value of the float height sensor 42 is input to a control device H as a control means configured with a microcomputer, and the control device H maintains the detection value of the float height sensor 42 at the set value for raising and lowering. As described above, the hydraulic valve 31 is expanded and contracted by operating the control valve 44. Thus, the seedling planting device 10 is maintained at the set height from the surface G. Such a control operation by the control device H corresponds to automatic elevation control.

  The control device H includes a machine body side control unit H1 provided in the traveling machine body and a work machine setting unit H2 provided in the seedling planting device 10, and the machine body side control unit H1 and the work machine control unit H2 are respectively provided. These are configured by different microcomputers, and they are configured to perform CAN (Controller Area Network) communication, which is a well-known communication technology. And since the work machine control part H2 manages the detection information of a various detection sensor, and transmits to the body side control part H1, or controls various electric motors based on the command from the body side control part H1. There is no control by itself, and the main control is performed by the airframe side control unit H1.

  When the planting depth is adjusted by changing the vertical position of the fulcrum of the grounding float 12 with respect to the frame 14 by operating the planting depth adjustment lever 40, the control device H is changed accordingly. Thus, the set value for lifting is corrected.

  That is, a set planting depth detection sensor 45 that detects the planting depth set by the planting depth adjustment lever 40 based on the operation position of the float support shaft 36 is provided. This set planting depth detection sensor Based on the detection result of 45, the control device H corrects the elevation setting value. This set planting depth detection sensor 45 is constituted by a rotary potentiometer linked to the float support shaft 36.

  The control sensitivity setting unit 49 shown in FIG. 7 changes and adjusts the control sensitivity of the automatic lifting control of the seedling planting device 10 by the control device H to the insensitive side or the sensitive side by changing and adjusting the setting value for lifting up and down. Is. That is, if the set value for raising / lowering is set higher with respect to the fulcrum position of the grounding float 12, the reference posture of the grounding float 12 seems to rise forward, the grounding pressure from the surface G to the grounding float 12 is reduced, and the control sensitivity is increased. Become insensitive. When the set value for raising and lowering is set to a low value, the reference posture of the grounding float 12 is lowered forward, the grounding pressure from the surface G to the grounding float 12 is increased, and the control sensitivity becomes sensitive.

  Further, a potentiometer type link angle detection sensor 88 for detecting the elevation angle of the link mechanism 4 with respect to the traveling machine body is provided, and the detection value of the link angle detection sensor 88 is input to the control device H, and the link mechanism for the traveling machine body. By detecting the angle 4, the height of the seedling planting device 10 with respect to the traveling machine body can be detected.

[3] (Configuration of automatic rolling control)
Next, the structure for performing the automatic rolling control of the seedling planting apparatus 10 will be described.
As shown in FIG. 3, the feed case 16 is supported so as to be able to roll around the front and rear axis P <b> 1 at the lower rear portion of the link mechanism 4. That is, the seedling planting device 10 is supported so as to be able to roll around the front and rear axis P1 at the lower rear portion of the link mechanism 4. In addition, an inclination sensor 48 is fixed to the feed case 16, and the inclination angle in the left-right direction of the seedling planting device 10 with respect to the horizontal plane (field G) is detected by the inclination sensor 48 (see FIG. 3), as shown in FIG. As described above, the detection value of the inclination sensor 48 is input to the control device H.

  As shown in FIG. 3, a rolling mechanism 46 is provided at the upper rear part of the link mechanism 4 so as to be able to change and change the right / left inclined posture of the seedling planting device 10 with respect to the traveling machine body. The rolling mechanism 46 includes a pair of wires 46a that are pushed and pulled in the left-right direction, a gear mechanism (not shown) that pushes and pulls the wires 46a, and an electric motor 46b. The wire 46a of the rolling mechanism 46 and the left and right side portions of the frame on the seedling planting device 10 side are connected.

  The control device H is configured to control the electric motor 46b so as to push and pull the wire 46a so that the horizontal inclination angle of the seedling planting device 10 with respect to the horizontal plane detected by the inclination sensor 48 becomes the set inclination angle. Has been. As a result, the seedling planting device 10 is automatically maintained at the set inclination angle.

  The set tilt angle can be changed and adjusted by a manually operated set tilt angle adjuster 63 provided on the control panel 62. As shown in FIG. 7, the set tilt angle adjuster 63 includes a left tilt switch 63L and a right tilt switch 63R each configured to be pushed, and when the left tilt switch 63L is operated, the set tilt angle is set to the left. It changes to the tilt side, and when the right tilt switch 63R is operated, the set tilt angle changes to the right tilt side.

[4] (Configuration of automatic planting control)
Then, in this riding type rice transplanter, after the planting work in a certain work process is completed and the vehicle is turned at the shore, the left and right are turned when performing the turning operation to start the planting work in the next work process. The control device H controls the steering based on the detection information of the number of revolutions of the rear wheel 2 in the free-rotation state. Execute the automatic planting control for turning to automatically start the planting work by determining the angle and the travel distance and automatically determining that the start position has been reached in the next work process. It is configured as follows.

The automatic planting control for turning will be briefly described. As shown in FIG. 14, when turning while approaching the heel AZ, if it is located at the turning start position E1 from the straight traveling state in the previous work stroke L01. The operator raises the seedling planting device 10 and operates the steering handle 19 to start turning. At this time, as shown in FIG. When the steering angle A of the wheel 1 is determined, it is determined that the turning center C of the traveling vehicle body is located on the extension line of the axle of the left and right rear wheels 2, and the wheel bases W (right side of the front wheels 1 and the rear wheels 2) And the distance between the axle of the left front wheel 1 and the axle of the right and left rear wheels 2) and the steering angle A from the straight position of the left and right front wheels 1 (detected by a cut angle sensor not shown). Based on the Center C is detected, further, the distance R between the turning center C of the horizontal center and body of the traveling machine body is detected as a turning radius.
In the state where the turning center C and the turning radius R of the traveling machine body are detected in this way, the rotational speed of the rear wheel 2 on the turning center side is detected by a sensor (not shown), and the traveling distance is detected from the rotational speed. The traveling angle θ of the traveling machine body is detected based on the turning center C, the turning radius R, and the traveling distance.

Then, as shown in FIG. 14, when the moving angle θ exceeds 90 degrees due to turning (exceeds the point E2 in the figure), the operator then returns the steering handle 19 to the straight traveling state. Then, the traveling machine body returns to the straight traveling state. However, in the turning travel route LL2, depending on the turning radius R and the movement angle θ of the traveling machine body, each of the first half portion L1 and the second half portion L2 of the turning traveling is described below. Based on Formula 1, the position Y1 of the traveling machine body in the traveling direction of the traveling machine body in the planting work process can be detected.
Formula 1: Y1 = R * SIN (θ)
R: turning radius of the aircraft θ: angle of movement of the aircraft from the turning start position E1

  Until the movement angle θ reaches 90 degrees, the change in the position Y1 of the traveling aircraft along the traveling direction is positive (+). However, when the traveling angle θ exceeds 90 degrees, the traveling direction of the traveling aircraft is reversed. Therefore, the change in the position Y1 of the traveling machine body along the traveling direction is negative (−). That is, since the vehicle returns to the same position as the turning start position at the turning end point, the change in the position of the traveling machine body becomes zero, and it can be determined that the turning end point has been reached.

  When the steering angle of the steering wheel 19 becomes zero and the aircraft returns to the straight traveling state, the rear wheel 2 on the inside of the turning is in a transmission state. At that time, the seedling planting device 10 is automatically lowered and grounded. It will run for a while in the state. Thereafter, when the position of the traveling machine body along the traveling direction obtained as described above returns to the turning end point, the planting clutch 57 and the fertilizer clutch 58 are assumed to have reached the start end position E3 in the next work stroke L02. The planting work is automatically started by automatically switching to the entering state. Thus, the position determined as the turning end point (starting end position E3) corresponds to the turning end determination position.

  A series of processes as described above is automatic planting control for turning, but as shown in FIG. 11, the control panel 62 of the aircraft control unit 9 includes a control-entered state in which automatic planting control is performed and a control that is not performed. An automatic planting control on / off switch 82 (hereinafter, abbreviated as planting control switch) that can be switched to a cut state is provided.

  The automatic planting control on / off switch 82 has a display lamp (not shown) and switches between a control-on state and a control-off state each time it is pushed. As shown in FIG. The outer peripheral portion 82a is lit when switched to, and is turned off when switched to the control cut state, so that the operator can visually recognize the switched state.

  The control operation in the automatic planting control corresponds to an automatic control operation for turning that turns the planting clutch 57 (working clutch) into operation by determining the end of turning when the traveling body is turning. .

  In addition to the display device F provided in the control unit panel 63 as will be described later, a center mascot provided at the front of the vehicle body of the traveling aircraft as a notification of whether or not the automatic planting control is being executed A mascot display lamp 79 is provided at the front end of M, and the mascot display lamp 79 displays and informs.

A display operation by the control device H of the mascot display lamp 79 will be described.
As shown in FIG. 16, when the planting control switch 82 is switched to the control-on state and the planting clutch 57 is not disengaged, that is, when working, the mascot display lamp 79 is continuously operated. Displayed in a lighting state (steps 1 to 3). When the planting control switch 82 is switched to the control-on state, but the planting clutch 57 is in the disengaged state (for example, when the vehicle is turning, for example), the mascot display lamp 79 is displayed in a blinking state (step 4). If the planting control switch 82 has been switched to the control-off state, the mascot display lamp 79 is turned off (step 5).

When the display form of the mascot display lamp 79 is changed according to the work form in this way, for example, even when the operator is changed in the middle, for example, it is positioned in front of the fuselage and enters the field of view during the maneuvering operation. From the display state of the mascot display lamp 79, it is possible to easily confirm the current control state.
In addition, as a display form of the mascot display lamp 79, a combination different from the combination of the display forms corresponding to the control state as described above may be adopted, or a blinking time may be different. Various forms can be adopted.

  Even if the automatic planting control as described above is executed, the planting start position is not always an appropriate position due to differences in the field conditions and the like, so the planting clutch 57 and the fertilizer clutch 58 are switched to the on state. Thus, the planting start position for automatically starting the planting operation can be finely adjusted in the front-rear direction with respect to the turning end determination position obtained by calculation.

  That is, as shown in FIGS. 11 and 13, the control panel 63 of the aircraft control unit 9 is provided with a planting start position adjuster 64 for finely adjusting the planting start position in the front-rear direction. The adjuster 64 includes a push operation type first change switch 64a and a second change switch 64b. When the first change switch 64a is operated, the planting start position is changed to the upper side in the traveling direction, that is, to an earlier timing. When the second change switch 64b is operated, the planting start position can be changed to a position before the traveling direction, that is, a later timing.

  That is, each time the first change switch 64a is pressed, the planting start position changes to the upper side in the running direction by a unit amount with respect to the turning end determination position obtained by calculation, and each time the second change switch 64b is pressed. In addition, the planting start position changes to the lower side in the traveling direction by a unit amount with respect to the turning end determination position obtained by calculation.

[5] (Configuration of leveling height adjustment control)
As shown in FIG.1 and FIG.2, the leveling apparatus B provided with the leveling rotor 50 rotationally driven around the axial center along a body horizontal width direction is provided between the traveling body and the seedling planting apparatus 10. FIG. .
As shown in FIG. 3, the leveling rotor 50 is provided in a state of being positioned on both the left and right sides of the center grounding float 12.
As shown in FIG. 4, the left and right leveling rotors 50 include a transmission case 61 connected across one end of the rotation support shaft 51 of the leveling rotor 50 and the planting transmission case 17, and the rotation support shaft 51 of the leveling rotor 50. It is supported by the frame 14 of the seedling planting device 10 through support means 70 connected across the end portion and the intermediate portion and the main frame 14a.

  As shown in FIG. 6, a rotor cover 85 is provided behind the left and right leveling rotors 50, and each rotor cover 85 is configured by a curved iron plate formed along the outer periphery of the leveling rotor 50. It is. Each rotor cover 85 receives the mud splashed up by the leveling rotor 50 so as not to hit the grounding float 11 and the like and drops it on the surface G. Each rotor cover 85 is moved up and down together with the leveling rotor 50.

  The left and right leveling rotors 50 are rotationally driven around the axis X of the rotation support shaft 51 in the lateral direction of the vehicle body by the driving force transmitted to the feed case 16.

As shown in FIGS. 3 and 6, each support means 70 that supports the left and right leveling rotors 50 includes a shaft support link 71 that rotatably supports the rotation support shaft 51 of the leveling rotor 50 by a shaft support portion 71a. An intermediate link 72 having one end connected to the pivot link 71 via a connecting pin 72a is relatively rotatable, and the free end is connected to the other end of the intermediate link 72 via a connecting pin 73a. The swing link 73 is provided, and an operation link 74 having a free end side connected to an intermediate portion of the intermediate link 72 via a connecting pin 74a is provided.
The base end side of the swing link 73 is rotatably supported on the upper end side of the support portion 75a of the stay 75 fixed to the main frame 14a via a pivot pin 73b.

  A fan-shaped gear 77 is provided on one operation link 74 so as to be integrally rotatable, and a lift motor 78 composed of an electric motor meshed with the fan-shaped gear 77 and an output gear 78a is supported by a stay 75. By this elevating motor 78, the output gear 78a can rotate the fan-shaped gear 77 around the axis of the interlocking shaft 76 upward or downward to swing the operation link 74 upward or downward. It is configured as follows.

  As shown in FIG. 7, in a state where the seedling planting device 10 is located at the work position, the leveling rotor 50 is set to the retreat position A3 above the field surface G and below the retreat position A3. The leveling rotor 50 can be moved up and down by the lifting motor 78 over the position A4. In the work position A4, the work upper limit position A4U is set on the upper side (the side where the leveling depth is shallow), and the work lower limit position A4D is set on the lower side (the side where the leveling depth is deep). Can be changed and adjusted within these ranges.

  As shown in FIG. 3, the operation link 74 in each of the support means 70 that supports the left and right leveling rotors 50 is connected to an interlocking shaft 76 that faces the vehicle body, and an elevating motor 78 rotationally drives the interlocking shaft 76. Thus, the operation link 74 can be swung upward or downward, and the leveling rotor 50 can be moved up and down. The interlocking shaft 76 is provided so as to extend in the vehicle body width direction, and is configured so that the left and right leveling rotors 50 can be lifted and lowered simultaneously by one lifting motor 78.

  The interlocking shaft 76 is provided with a rotor position detection sensor 80, and this rotor position detection sensor 80 is constituted by a rotary potentiometer in which a rotation operation shaft is interlocked with the interlocking shaft 76, and based on the rotational position of the interlocking shaft 76. The positions of the left and right leveling rotors 50 in the vertical direction of the vehicle body relative to the frame 14 of the seedling planting device 10 are detected, and the detection result is output to the control device H.

  Based on the detection results of the setting planting depth detection sensor 45 and the rotor position detection sensor 80 and the preset leveling depth set in advance, the control device H causes the left and right leveling rotors 50 to move to the frame 14 of the ground sensor float 12. The operation of the elevating motor 78 is controlled so as to maintain the set leveling depth regardless of the change in height with respect to.

  Therefore, even if the planting depth adjustment lever 40 is operated and the height of the grounding float 12 with respect to the frame 14 of the seedling planting device 10 is changed and adjusted, the left and right leveling rotors 50 are adjusted up and down, and the left side is adjusted. The right leveling rotor 50 maintains the set leveling depth set by the leveling depth adjuster 81 and performs leveling at this set leveling depth.

  The process of adjusting the vertical position of the leveling rotor 50 as described above to the set leveling depth is leveling height adjustment control, but the control unit panel 62 of the airframe control unit 9 has a control unit panel 62 as shown in FIGS. A leveling height adjustment control on / off switch 97 (hereinafter simply referred to as a leveling control switch) is provided that can be switched between a control-on state in which the leveling height adjustment control is executed and a control-off state in which the leveling height adjustment control is not executed.

  The control device H executes leveling height adjustment control when the leveling control switch 97 is switched to the control-on state, and when the leveling control switch 97 is switched to the control-off state, at which position the seedling planting device 10 is located. Even if it exists, it is comprised so that the leveling rotor 50 may be maintained in the retracted position A3 and the leveling height adjustment control may not be executed.

  As shown in FIG. 13, the leveling control switch 97 has a display lamp (not shown) and switches between a control-on state and a control-off state each time it is pushed, but is switched to the control-on state. Then, the outer peripheral portion 97a is turned on and turned off when switched to the control cut-off state so that the operator can visually recognize the switched state.

  The control operation in the leveling height adjustment control corresponds to the vertical position adjustment operation of the leveling device B provided between the traveling machine body and the seedling planting device 10.

  Further, as shown in FIG. 13, the control unit panel 62 of the airframe control unit 9 is provided with a leveling depth adjuster 81 for setting a leveling level when the leveling rotor 50 is in the working range. The depth adjuster 81 is composed of two switches: an up switch 81U configured to change the set leveling depth configured to a push operation type to the shallow side, and a down switch 81D configured to change the set leveling depth to the deep side. It is configured. The currently set ground leveling depth is displayed on a liquid crystal display type display device F which will be described in detail later.

[6] (Configuration of control panel)
As shown in FIG. 11, the steering unit panel 62 of the airframe control unit 9 is provided with a steering handle 19 at the center, and the front part of the handle post 83 that supports the steering operation shaft 83 a in the state of surrounding the steering operation panel 83 a. In addition, a display device F as a display means for displaying various display information is provided, and the setting state in the various automatic control operations described above is manually operated on the left side portion of the handle post 83 in the control unit panel 62. A control setting operation unit 65 is provided as control setting means for making changes.

  In other words, as shown in FIG. 1, the control panel 62 is formed with a gently inclined surface 62 </ b> A that is gently inclined forward and upward at the left and right sides of the handle post 83. A steeply inclined surface 62B is formed on the front side of 62A. Then, as shown in FIG. 11, the control setting operation unit 65 is provided on the gently inclined surface 62A located on the left side of the handle post 83, and the display device F is inserted into the recess 62B0 formed on the steeply inclined surface 62B. Is provided.

  The spoke 19 </ b> A of the steering handle 19 is provided in a generally U-shape that is gentle in a straight traveling state, and an operator seated on the driver's seat 9 a can be provided in a substantially U-shape in the steering handle 19. The display device F is viewed through a region that is largely open to the front side of 19A, and the display device F is provided in a state that is easy to see.

At the right side of the handle post 83 of the gently inclined surface 62A of the control panel 62, a direction indicator operation tool 26A, a headlamp operation tool 26B, a horn operation tool 26C, and the like are integrally combined. A driving operation device 26 configured as described above is provided, an accelerator lever 27 is provided on the right side of the driving operation device 26, and a key switch 28 is provided on the rear side of the body of the driving operation device 26.
In addition to the control setting operation unit 65, the slow inclined surface 62A located on the left side of the handle post 83 is provided with a speed change lever 18 on the left side, and a choke knob 29 is provided on the rear side of the speed change lever 18. It has been.

  As shown in FIGS. 7 and 12, an operation lever 98 for switching the work state is provided on the lower right side below the steering handle 19, and the operation lever 98 is a first raised position U1 above the neutral position N. The second raised position U2, the lower first lowered position D1, the second lowered position D2, the rear right marker position R, and the front left marker position L can be operated in the cross direction and returned to the neutral position N. The operation position of the operation lever 98 is input to the control device H.

  The operation performed based on the operation of the operation lever 98 will be briefly described. For example, in the case of turning on the coast, the operation lever 98 is temporarily operated from the neutral position N to the second ascending position U2. Then, the seedling planting device 10 is raised by operating the planting clutch 57 and the fertilizing clutch 58 to the disconnected state.

  When the operation lever 98 is operated to the second lowered position D2, the seedling planting device 10 is lowered, and when the center grounding float 12 contacts the surface G, automatic lifting control and automatic rolling control are started, and the seedling planting device 10 is started. When the operation lever 98 is operated again to the second lowered position D2, the planting clutch 57 and the fertilization clutch 58 are switched to the transmission state.

  When the operating lever 98 is operated to the right marker position R, the right marker 52 is operated to the operating posture, and when the operating lever 98 is operated to the left marker position L, the left marker 52 is operated to the operating posture. When the operation lever 98 is operated to the first raised position U1, the seedling planting device 10 is raised while being operated, and when being operated to the first lowered position D1, the seedling planting device 10 is lowered while being operated. To do.

Next, the display device F will be described.
As shown in FIG. 8, the display device F is provided with an information display unit F1 using a liquid crystal display panel at the center in the width direction, and used on the left and right sides of the information display unit F1 according to work. Various notification information to be notified to the person is displayed.

  That is, on the right side of the information display part F1, the seedling out sensor display S2 that lights up when the seedling out sensor S3 detects that the remaining amount of seedlings on the seedling stand 15 is reduced, and the fertilizer out sensor S1. A fertilizer that lights up when it is detected that clogging has occurred in the fertilizer supply path by the fertilizer shortage indicator F3 and the fertilizer clogging sensor S2 that are lit when it is detected that the fertilizer in the fertilizer tank 21 is low. A clogging display portion F4 and a planting clutch display portion F5 that is turned on when the planting clutch 57 is disengaged are provided.

Further, on the left side of the information display portion F1, a hydraulic pressure abnormality display portion F8 that displays a hydraulic system abnormality in the engine 5, a battery exhaustion display portion F7 that displays that the battery voltage is low, and various types of the engine 5 are displayed. Each line clutch 87 (see FIG. 7) that indicates that each line clutch 87 (see FIG. 7) capable of intermittently connecting / disconnecting power to the plurality of planting transmission cases 17 by the electric motor 86 and the engine abnormality display part F6 that displays an abnormality is displayed. A display unit F9 is provided.
On the lower side of the information display unit F1 (side closer to the operator), a marker display unit F10 that displays which of the left and right markers 52 is in an active state is provided.

  The information display unit F1 includes a fuel remaining amount display unit 90 that displays the remaining amount of fuel on the left side, and a temperature display unit 91 that displays the temperature of the engine coolant on the right side. In the lower part of the center, a cumulative operation time (hour meter) is displayed, and a numerical value display part 92 for displaying the engine speed is displayed on the upper side of the numerical value display part 92. An hour meter instruction unit 93 indicating whether or not an hour meter is present, and an engine speed instruction unit 94 indicating that the numerical value display unit 92 displays the engine speed are provided.

On the upper side of the numerical value display section 92 and on the left side of the engine speed instruction section 94, an automatic planting control display section 95 that is turned on when automatic planting control is being executed and is turned off when control is not being executed. Is provided.
That is, the automatic planting control display unit 95 is turned on when the planting control switch 82 described in [4] is switched to the control-on state, and is turned off when the planting control switch 82 is switched to the control-off state. It is configured to be.

  The numerical display portion 92 displays an hour meter when the power is turned on, and the display state is controlled so as to display the engine speed when the engine 5 is started. It is also used as a display when setting the set tilt angle in automatic rolling control.

  That is, the numerical value display unit 92 can display alphabets and arrows instead of simply displaying numbers. For example, when setting a set inclination angle, for example, as shown in FIG. “M” is displayed on the leftmost side, “→” is displayed second from the left when the right tilt switch 63R is pressed, and “←” is displayed second from the left when the left tilt switch 63L is pressed. Is displayed with the set tilt angle aligned.

  The display operation for setting the set tilt angle by the numerical display unit 92 is performed only when the right tilt switch 63R or the left tilt switch 63L is pressed, and the set time elapses after the angle setting operation ends. Then, the display state is controlled to automatically return to the engine speed display.

  A set leveling depth display unit 96 for displaying the set leveling depth for the leveling rotor 50 is provided between the remaining fuel amount display unit 90 and the numerical value display unit 92. The set leveling depth display unit 96 includes a rotor display 96A indicating that the leveling rotor 50 is displayed, and a depth display 96B that displays the five levels of depth with five black circles.

When the set leveling depth is changed by pressing the leveling depth adjuster 81 (the up switch 81U or the down switch 81D), the set leveling depth display unit 96 displays the depth according to the operation. A corresponding one of the five black circles of 96B is displayed (see FIG. 9), and it is displayed that the number is any one of the five levels.
That is, the set leveling depth increases by one step each time the up switch 81U is pressed, and the set leveling depth decreases by one step each time the down switch 81D is pressed.

  When the leveling control switch 97 is switched to the control-on state, the set leveling depth display unit 96 displays the rotor display 96A and the depth display 96B as described above, and the leveling control switch 97 enters the control-off state. When switched, the rotor display 96A and the depth display 96B are not displayed.

  The arrangement of the display units F2 to F10 other than the information display unit F1 in the display device F is not limited to the arrangement shown in FIG. 8 and may be arranged with various changes. For example, a highly urgent one (seedling out display part F2, fertilizer outage display part F3, fertilizer clogging display part F4, out of battery display part F7, engine abnormality display part F6) is placed below the information display part F1 (operator It is possible to make various changes such as arranging the other display units on the left and right sides of the information display unit F1.

Next, the control setting operation unit 65 will be described.
As shown in FIG. 13, the control setting operation unit 65 is formed in a rectangular shape in plan view, and is described in [3] above on the front side of the fuselage (the side far from the driver's seat 9a). A set tilt angle adjuster 63 (a left tilt switch 63L and a right tilt switch 63R) for commanding a change of the set tilt angle for the automatic rolling control is provided. On the rear side (the side closer to the driver's seat 9a) of the set inclination angle adjuster 63, the leveling depth adjuster 81 (up switch 81U and down switch 81D) described in [5] above and [4 ], The planting start position adjuster 64 (the first change switch 64a and the second change switch 64b) described above is provided in a state of being aligned in the body width direction.

  The leveling depth adjuster 81 is provided with the leveling control switch 97 described in [5] in a state connected to the rear side of the machine body, and the planting start position adjuster 64 is connected to the rear side of the machine body in the state [4]. And the control sensitivity setting device 49 described in the above [2] is further provided on the rear side of the aircraft with respect to the leveling control switch 97 and the planting control switch 82. Yes.

  Among these, each of the leveling depth adjuster 81 and the planting start position adjuster 64 corresponds to the fine adjustment command tool T, and the leveling control switch 97 and the planting control switch 82 correspond to the control on / off command tool I. Is.

  As described above, the control setting operation unit 65 is disposed at a position close to the driver seat 9a on the left side of the handle post 83. Therefore, even when the operation is performed during work travel, the steering handle 19 is operated with the right hand. The control setting operation unit 65 can be operated with the left hand.

A lid 66 that can be opened and closed in a closed state that covers the upper side of the control setting operation unit 65 and an open state that opens the upper side is provided.
The lid body 66 is configured to cover the upper portions of the set inclination angle adjuster 63, the leveling depth adjuster 81, and the planting start position adjuster 64, and includes a leveling control switch 97, a planting control switch 82, and a control. The upper part of the sensitivity setting device 49 is always opened.

  Incidentally, since the frequency of changing the set tilt angle in the automatic rolling control is low, the set tilt angle adjuster 63 is configured to be covered with the lid 66, and the sensitivity setting in the automatic lift control is changed for each field. In some cases, since the operation frequency is large, the control sensitivity setting unit 49 is always open.

The cover body 66 will be further described. The cover body 66 is supported by a hinge 67 provided along an end edge along the front-rear direction on the right side of the control setting operation unit 65 so as to be openable and swayable. The adjuster 63, the leveling depth adjuster 81, and the planting start position adjuster 64 are provided so as to be switchable between a closed posture that covers the upper portions and an open posture that opens the upper portions.
When the lid 66 is switched to the open posture, the lid 66 is received by the lateral side portion of the cover portion 68 covering the handle post 83 between the steering handle 19 and the control portion panel 62 and can be held in an oblique posture. It is configured as follows.

  As shown in FIGS. 11 and 12, the cover 68 that covers the handle post 83 between the steering handle 19 and the control panel 62 is a side wall 68a on the side (left side) where the control setting operation unit 65 is located. The lateral wall 68b close to the handle post 83 and on the opposite side (right side) thereof is far from the handle post 83, and is formed to be asymmetric with respect to the handle post 83 in the longitudinal direction of the body.

  The cover portion 68 is divided into left and right at a position corresponding to the handle post 83 when viewed in the front-rear direction, and the narrow divided cover portion 68L located on the left side is integrated with the control portion panel 62. Thus, the wide divided cover portion 68R located on the right side is detachably mounted.

  A plurality of switches (not shown) for detecting the operation state of the operation lever 98 are provided inside the cover portion 68. When performing maintenance processing of these switches, a wide division is performed. By removing the cover portion 68R, it can be easily performed in a state of being largely opened.

[Another embodiment]
(1) In the above embodiment, automatic planting control and leveling height adjustment control are performed as the automatic control operation, and the leveling control switch 97 and planting control switch 82 are provided as the control on / off command tool I, and a fine adjustment command is provided. Although the thing of the structure provided with the leveling depth adjuster 81 and the planting start position adjuster 64 was illustrated as the tool T, as an automatic control operation | movement, any one of automatic planting control and leveling height adjustment control is provided. It may be a thing, and other control operations other than these may be performed.

(2) In the above embodiment, the control setting operation unit 65 includes the set inclination angle adjuster 63, the leveling depth adjuster 81, the planting start position adjuster 64, the leveling control switch 97, the planting control switch 82, and the control sensitivity setting. As a configuration including each of the devices 49, the lid body 66 is configured to cover the set inclination angle adjuster 63, the leveling depth adjuster 81, and the planting start position adjuster 64, and the leveling control switch 97, planting control. Although the switch 82 and the control sensitivity setting unit 49 are configured so that the upper portions of the control sensitivity setting unit 49 are always open, the lid 66 is located above all the areas of the control setting operation unit 65 instead of such a configuration. It is good also as a structure which covers.

(3) In the above embodiment, the control setting operation unit 65 and the choke knob 29 are provided on the left side of the handle post 83, and the driving operation device 26 and the key switch 28 are provided on the right side of the handle post 83. Instead of such a configuration, the control setting operation unit 65 and the choke knob 29 may be provided on the right side of the handle post 83, and the driving operation device 26 and the key switch 28 may be provided on the left side of the handle post 83. Alternatively, all of these may be provided on the right side of the handle post 83, or all of these may be provided on the left side of the handle post 83.

(4) In the above embodiment, the control setting operation unit 65 is provided on the left side of the handle post 83, the cover 68 has the left side wall 68a close to the handle post 83, and the right side wall 68b extends from the handle post 83. Although shown in the form of being far away and asymmetrically formed with respect to the handle post 83 in the longitudinal direction of the body, instead of such a configuration, for example, the control setting operation unit 65 is provided on the right side of the handle post 83. The cover 68 has a configuration in which the right side wall 68b is close to the handle post 83 and the left side wall 68a is far from the handle post 83, with respect to the handle post 83 in the longitudinal direction of the body. It is good also as a structure formed in right-and-left asymmetric, and it is not restricted to what is formed in right-and-left asymmetric in this way, but cover part 68 has handle post 83. It may be those provided symmetrically against.

(5) In the above embodiment, the shift lever 18 is provided as a configuration for changing and adjusting the vehicle speed. However, in place of the shift lever 18 or in combination with the shift lever 18, as shown in FIG. The grip 19B of the steering handle 19 may be provided with a plurality of push-operated shift switches 100 that individually indicate different speeds at a plurality of stages for forward traveling and reverse traveling, respectively. That is, the forward high speed switch 100A, the forward intermediate speed switch 100B, the forward low speed switch 100C, the reverse low speed switch 100D, the reverse high speed switch 100E, and the neutral switch 100F are arranged in the recess 101 formed in the grip portion 19B. It is the composition provided.

(6) In the above-described embodiment, the spoke 19A in the steering handle 19 is provided in the shape of a gentle, generally straight shape in the straight traveling state. For example, as shown in FIG. As a configuration provided in the configuration, not only the display device F but also the control setting operation unit 65 may be configured to be detached from the spoke 19A when viewed by the operator.

(7) In the said embodiment, although the leveling apparatus B illustrated what is equipped with a paddy field work apparatus (seedling planting apparatus 10), if the leveling apparatus B is supported by the paddy field work apparatus (seedling planting apparatus 10), Instead, the leveling device B may be supported at the rear portion of the vehicle body frame 3 of the traveling machine body through a link mechanism so as to be movable up and down.

(8) In the above embodiment, the seedling planting device 10 is exemplified as a paddy field working device, but instead, a fertilizer, a direct sowing device, a chemical spraying device, a rice bran spraying device, and the like that supply paste-like fertilizer to the rice field, etc. May be provided.

DESCRIPTION OF SYMBOLS 10 Paddy field work device 19 Steering handle 57 Work clutch 62 Steering part panel 65 Control setting means 66 Cover body 68 Cover part 68a, 68b Side wall 83 Handle post B Leveling device I Control on / off command tool F Display means T Fine adjustment command tool

Claims (5)

The paddy field work device is connected to the rear part of the traveling machine body, and the paddy field is provided with a steering handle and display means for displaying various display information including the setting state in the automatic control operation for paddy field work on the control panel of the traveling machine body. A working machine,
The display means is disposed on the steering panel in a state of being positioned on the front side of a handle post in the steering handle;
A control setting means for changing the setting state in the automatic control operation by manual operation is disposed on the control unit panel in a state in the vicinity of the display means and on the side of the handle post. And
A paddy field work machine provided with a lid that can be freely opened and closed between a closed state covering the upper side of the control setting means and an open state opening the upper side. The control setting means, a control on / off command tool for commanding either the state of executing the automatic control operation or the state of not performing the automatic control operation, and the fine adjustment for commanding the fine adjustment of the operation when the automatic control operation is performed And a command tool,
The paddy field work machine according to claim 1, wherein the lid body is configured to cover an upper portion of the fine adjustment command tool, and is configured to always open an upper portion of the control on / off command tool.   A cover portion covering the handle post between the steering handle and the control unit panel has a side wall on the side where the setting means for control is located close to the handle post and a side wall on the opposite side. The paddy field work machine according to claim 1 or 2, wherein the paddy field work machine is formed to be asymmetrical with respect to the handle post as viewed from the front-rear direction of the machine body in a form far from the handle post.   The paddy field work machine according to any one of claims 1 to 3, wherein the automatic control operation is a vertical position adjustment operation of a leveling device provided between the traveling machine body and the paddy field work device.   The automatic control operation according to any one of claims 1 to 3, wherein the automatic control operation is an automatic control operation for turning that makes a work clutch engage and determine the end of turning when the traveling body is turned. Paddy field machine.

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