JP5457899B2 - Paddy field machine - Google Patents

Description

  The present invention is provided with a paddy field work device that can be moved up and down via a link mechanism at the rear part of the machine body, and a leveling rotor that is rotationally driven around an axis along the width direction of the machine body between the machine body and the paddy field work device. The present invention relates to a paddy field machine configured to be capable of switching between a working state in which leveling work is performed and a non-working state in which no work is performed.

  The paddy field work machine supports the paddy field work device at the rear part of the machine body through a link mechanism so that it can be raised and lowered, and a leveling device is provided between the paddy field work machine and the machine body so that it can be raised and lowered. However, the paddy field work can be performed by the paddy field working device.

Conventionally, such paddy field machines have been configured as follows.
That is, a seedling planting device for planting seedlings on the rice field as a paddy field working device is provided so as to be movable up and down with respect to the machine body, a leveling device is provided in the seedling planting device, and the height of the leveling rotor with respect to the seedling planting device is increased. It is configured to be freely changeable up and down by driving the electric motor, and is provided with a control device for controlling the electric motor and a dial type leveling setting switch capable of manually setting and operating the setting height of the leveling rotor with respect to the surface. When the control device is performing seedling planting work with the seedling planting device, the electric motor is controlled to change the height of the leveling rotor to the set height based on the setting information of the leveling setting switch However, when the seedling planting apparatus is not performing seedling planting work, for example, when the seedling planting apparatus is being lifted from the surface largely in order to swivel at the shore, There is one configured to control the electric motor so as to position the most elevated retracted position against the biasing apparatus (e.g., see Patent Document 1.).

  Incidentally, in the one shown in Patent Document 1, the state where the leveling rotor is controlled by the electric motor to change the height of the leveling rotor to the set height corresponds to the working state, and the leveling rotor is positioned at the retracted position. The state of being in the state corresponds to the non-working state.

JP 2009-291146 A

  In Patent Document 1, when the seedling planting device is not performing seedling planting work, the ground leveling rotor is controlled to be in the retracted position as described above, that is, the leveling device is switched to the non-working state. However, the user is maneuvering while looking at the front side of the aircraft at the aircraft maneuvering section, and is controlled by the operator so that the leveling rotor is positioned at the retracted position. In such a case, look into the lower part of the seedling planting device at the rear of the aircraft from the aircraft control unit and check whether the leveling device is in a non-working state. It was done.

  The purpose of the present invention is to make it possible to check the state of the leveling device without troublesomeness such as the user looking into the aircraft rear lower side from the aircraft control section, and to improve the operability. The work machine is provided.

The paddy field work machine according to the present invention is provided with a paddy field work device that can be moved up and down via a link mechanism at the rear part of the machine body, and is driven to rotate about an axis along the width direction of the machine body between the machine body and the paddy field work device. A leveling device including a leveling rotor is provided, and the leveling device is configured to be switchable between a working state in which the leveling work is performed and a non-working state in which the work is not performed. The configuration is such that the leveling device is capable of changing and adjusting the leveling depth of the leveling rotor with respect to the surface of the leveling rotor, a display means for displaying the leveling depth of the leveling rotor, and a manual operation for commanding on / off of the operation of the leveling device When the operation of the leveling device is commanded by the operation state switching means of the formula and the operation state switching means, the leveling depth of the leveling rotor in the working state of the leveling device is represented by the table When the operation state switching means is instructed to turn off the leveling device, the leveling device is maintained in the non-working state and display by the display unit is not performed. And a control means for operating the leveling device and the display means .

According to the first characterizing feature, if the cutting operation of the leveling device by the operation state switching means is commanded, the control means, leveling device is not performed displayed by to and display means maintained in a non-working state Therefore, it is possible to easily confirm that the leveling device is switched to the non-working state without the trouble of the user navigating in the aircraft maneuvering section looking into the lower rear side of the aircraft. .

Since the commanding turning on or off the operation of the leveling device by the operation state switching means manually operated, that Do as good usability can use grading apparatus only when necessary.

According to a second characteristic configuration of the present invention, in addition to the first characteristic configuration , the display means is provided in a control unit panel at the front of the aircraft.

According to the second feature configuration , since the display means is provided on the control unit panel at the front of the aircraft, the user who is operating while looking at the front of the aircraft in the control unit displays without looking back at the rear of the aircraft. The display contents of the means can be visually checked, and it can be easily confirmed from the display contents of the display means whether the leveling device is switched to the working state or the non-working state.

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.

  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.

  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. And a driving force output from the engine 5 is transmitted to a front wheel driving case 7 and a rear wheel driving case 8 via a traveling transmission (not shown) located inside the transmission case 6 and a pair of left and right front wheels 1, 1 And it drives by driving a pair of left and right rear wheels 2 and 2. The traveling machine body includes a machine body control unit 9 equipped with a driver's seat 9a.

  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) located 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 and three grounding floats by a frame 14 configured to include a main frame 14 a made of a square steel pipe material facing the vehicle body. 11, 12, seedling stage 15 and the like are provided and supported.

  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 via the transmission inside the transmission case 6, while the planting clutch 57 (see FIG. 7) and the PTO shaft 54 can be turned on and off by the electric motor 57a. (See FIG. 1), and the driving force is input to the input shaft 17a of the planting drive case 17 from the feed case 16 through the transmission shaft 33 (see FIG. 4) and the individual clutches 87. 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 rotatably supported around the axis P by a pair of left and right support arms 37 and 37 extending rearward from the single float support shaft 36 in the lateral direction of the vehicle body. Has been. 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 has a planting depth adjustment lever 40 that extends integrally from the intermediate portion in the lateral direction of the vehicle body toward the back side of the seedling support 15. I have. 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.

Next, a configuration for performing automatic lifting control of the seedling planting device 10 will be described.
As shown in FIG. 7, the rear portion of the central ground float 12 about axis P is supported swingably supported arm 37 up and down, and potentiometer 42 is provided for detecting the height of the ground float 12 While the grounding float 12 follows the ground surface G as the aircraft advances, the height of the central grounding float 12 with respect to the seedling planting device 10 by the detected value of the potentiometer 42, in other words, seedling planting from the surface G The height of the device 10 can be detected.

  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 potentiometer 42 is input to a control device H serving as a control unit including a microcomputer, and the control device H performs control so that the detection value of the potentiometer 42 is maintained at the set value for raising and lowering. The hydraulic cylinder 31 is expanded and contracted by operating the 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.

  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 is for changing and adjusting 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. That is, if the elevation setting value is set higher with respect to the fulcrum position of the grounding float 12, the grounding pressure from the surface G to the grounding float 12 becomes smaller and the control sensitivity becomes insensitive. If the set value for raising and lowering is set higher, the contact pressure from the surface G to the contact float 12 becomes larger, and the control sensitivity becomes sensitive.

  In addition, a potentiometer 88 for detecting the elevation angle of the link mechanism 4 with respect to the traveling machine body is provided, and the detected value of the potentiometer 88 is input to the control device H, and by detecting the angle of the link mechanism 4 with respect to the traveling machine body, The height of the seedling planting device 10 with respect to the traveling machine body can be detected.

Next, the structure for performing the automatic rolling control of the seedling planting apparatus 10 will be described.
A feed case 16 is supported in a freely rolling manner around the front and rear axis P1 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. Such a control operation by the control device H corresponds to automatic rolling control.

The set tilt angle can be changed and adjusted by a manually operated set tilt angle changing switch 63 provided on the control panel 62. As shown in FIG. 7, the setting tilt angle changing switch 63 is composed of a left tilt switch 63L configured to press each operable and right tilt switch 63R, the setting angle of inclination of the manipulating left tilt switch 63L changes to the left inclined side, setting the inclination angle of the operating right tilt switch 63R is configured to vary the right inclined side.

  By the way, in this riding type rice transplanter, after the planting work in one certain work process is finished and turning at the shore, when performing the turning operation to start the planting work in the next process, the left and right rear The control state of the control device H based on the detection information of the number of rotations of the wheel 2 after the free rotation state is determined so that the transmission state of the wheel 2 that is located inside the turning is cut off and can be freely rotated. It is configured to perform turning end position determination control that automatically starts planting work by determining the travel distance and automatically determining that the start position in the next work process has been reached. Has been.

The turning end position determination control will be briefly described. When the steering angle of the front wheel 1 is determined, it is determined that the turning center of the traveling machine body is located on the extension line of the axle of the right and left rear wheels 2. From the wheel bases of the front wheels 1 and the rear wheels 2 (the distance between the axles of the right and left front wheels 1 and the axles of the right and left rear wheels 2) and the straight travel positions of the right and left front wheels 1 Based on the steering angle, the turning center of the traveling machine body is detected, and the distance between the left and right center of the traveling machine body and the turning center of the machine body is detected as the turning radius of the aircraft body.
Thus, in the state where the turning center and turning radius of the traveling machine body are detected, the traveling distance is detected based on the rotation speed of the rear wheel 2 on the turning center side, and the turning center and turning radius of the traveling machine body and the traveling distance of the machine body are detected. Based on this, the moving angle of the traveling machine body is detected.
Then, the position of the traveling machine body along the traveling direction of the traveling machine body in the work process for planting is detected by the turning radius and the moving angle of the traveling machine body, and when the position becomes the same position as the turning start position, the next work process The planting operation is automatically started assuming that it has reached the starting end position.

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.

  The state where the leveling rotor 50 is at the work position A4 corresponds to the leveling device B being in the working state, and the state where the leveling rotor 50 is at the retracted position A3 corresponds to the leveling device B being in the non-working state. .

  That is, 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 the interlocking shaft 76 facing the vehicle body, and the lifting motor 78 rotates the interlocking shaft 76. By driving, the operation link 74 can be swung up and down, and the leveling rotor 50 can be raised and lowered. 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.

  As shown in FIG. 7, a leveling depth setting device 81 for setting a leveling level when the leveling rotor 50 is in the working range is provided in the vicinity of the control unit panel 62 of the airframe control unit 9. The depth setting device 81 is composed of two switches, an up switch 81U for changing the set leveling depth configured to a push operation type to the shallow side and a down switch 81D for changing 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.

Controller H is set planting depth detection sensor 45 and a rotor position detecting sensor 80 detection result of, on the basis of the setting leveling depth by leveling depth setting device 81, the left and right leveling rotor 50 contact Chifu funnel The operation of the elevating motor 78 is controlled so as to maintain the set leveling depth regardless of the change in the height of the twelve frames 14.

  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 setting unit 81 and performs leveling at this set leveling depth.

And the display apparatus F corresponding to the display means of this invention which displays various information is provided in the control part panel 62 of the body control part 9. FIG.
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 row engine abnormality display unit for displaying an abnormality F6, a plurality of each of the power for planting only the transmission case 17 can intermittently to each another row clutch 87 by an electric motor 86 (see FIG. 7) to indicate that a switching state A clutch display unit F9 is provided.

  Below the information display portion F1, a marker display portion F10 that displays which of the left and right markers 52 is in the active state is provided.

  Among the display units for displaying the various types of notification information as described above, those that are highly urgent (seedling display unit F2, fertilizer outage display unit F3, fertilizer clogging display unit F4, out of battery display unit F7, engine abnormality display unit F6 ) Is displayed in red, for example, and those that are not so urgent (planting clutch display unit F5, each clutch display unit 9, marker display unit F10) are configured to be displayed in different colors, for example, yellow. ing.

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. and hour meter instruction unit 93 showing the Ah Turkey in hour meter that has, that are displayed on the numerical display section 92 is provided with an engine speed instruction unit 94 indicating that the engine speed .
On the upper side of the numerical value display section 92 and on the left side of the engine speed instruction section 94, the lamp is turned on when the turning end position determination control is being executed, and is turned off when the turning end position determination control is not being executed. A turning automatic control display unit 95 is provided.

  In addition to the automatic turning control display unit 95 for turning in the display device F, a center mascot M provided at the front of the vehicle body of the traveling machine is used to notify whether or not the turning end position determination control is being executed. Display is performed by a display lamp (not shown) provided at the front end portion. However, the display of the center mascot M is displayed in a blinking manner so that the operator can easily recognize it when the turning end position determination control is being executed.

As a configuration for notifying whether or not the turning end position determination control is being executed, the display contents (turned on and off) of the turning automatic control display section 95 and the display contents of the center mascot M (blinking) The display contents of the turning automatic control display unit 95 and the display contents of the center mascot M may be configured to be the same, instead of differentiating display and extinguishing).
In addition, whether the display contents are different or the display contents are the same, for example, as a display when the turning end position determination control is executed, a lighting display and a blinking display are displayed. It is possible to display in various forms such as using in combination or using the flashing display with different flashing cycles.

  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. and display, and displays to suit the setting angle of inclination degree.

  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 setting the leveling depth setting unit 81 by operating the leveling depth setting unit 81, the set leveling depth display unit 96 responds to the corresponding one of the five black circles in the depth display 96B. Is displayed (see FIG. 9), indicating that the number of steps is one of five levels.

  The control device H switches the display device F to a display state that displays the leveling depth of the leveling rotor 50 when the leveling device B is in the working state, and displays the display device F when the leveling device B is in the non-working state. The leveling depth of the leveling rotor 50 is switched to a non-display state that does not display. And if the seedling planting apparatus 10 is operated by the raising side of the raising / lowering range with respect to a traveling body, it will be comprised so that the leveling apparatus B may be switched to a non-working state.

Further, as shown in FIG. 7, a leveling on / off switch 97 is provided as a manually operated operating state switching means for commanding on / off of the operation of the leveling device B.
The control device H switches the leveling device B between the working state and the non-working state when the leveling device B is instructed by the leveling on / off switch 97 (the working state of the leveling device B). When switching of the operation of the leveling device B is instructed by the leveling on / off switch 97, the leveling device B is maintained in the non-working state (the working state of the leveling device B). The display device F is configured to switch to a non-display state in which the leveling depth of the leveling rotor 50 is not displayed.

The control device H includes a machine body side control unit H1 provided in the traveling machine body and a work machine control unit H2 provided in the seedling planting device 10, and each of the machine body side control unit H1 and the work machine control unit H2 includes Separately, the microcomputers 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.

  Since control by CAN communication is performed in this way, communication between the machine body side control unit H1 and the work machine control unit H2 is performed by two wires, and the connection structure becomes simple. When the seedling planting apparatus 10 is detached from the traveling machine body, the connection and separation work of the electric wires can be easily performed.

  As shown in FIG. 7, an operation lever 98 for switching the work state is provided on the right side below the steering handle 18, and the user switches the work state by operating the operation lever 98. Yes. The operation lever 98 is moved from the neutral position N to the first raised position U1, 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. It is configured to be operable in the cross direction and is urged to return to the neutral position N, and the operation position of the operation lever 98 is input to the control device H.

  The control device H executes the following control operation based on the command from the operation lever 98. In this control, the case where the control is executed based on the command of the operation lever 98 without executing the turning end position determination control will be described. Further, it is assumed that the leveling on / off switch 97 is operated to the on state.

  For example, in the case of turning on the coast, once the operation lever 98 is operated from the neutral position N to the second ascending position U2, the planting clutch 57 and the fertilizing clutch 58 are operated in the disconnected state to automatically The raising / lowering control and the automatic rolling control are stopped, the control valve 44 is operated to the supply position, and the hydraulic cylinder 31 is contracted to raise the seedling planting device 10. At this time, when the potentiometer 88 detects that the seedling planting device 10 has reached the upper limit position, the hydraulic cylinder 31 is stopped by operating the control valve 44 to the neutral position. The operating lever 98 is automatically returned to the neutral position N when the operator releases the hand after being operated to the second ascending position U2.

Further, once the operating lever 98 is operated from the neutral position N to the second ascending position U2, the elevating motor 78 is controlled so that the leveling rotor 50 automatically becomes the retracted position A3. This state corresponds to the leveling device B being in a non-working state.
At this time, as shown in FIG. 9B, the display device F is automatically switched to a non-display state in which the leveling depth of the leveling rotor 50 is not displayed. At this time, both the rotor display 96A and the depth display 96B of the set leveling depth display unit 96 are turned off and not displayed.

  Therefore, the control device H is configured to automatically switch the leveling device B to the non-working state when the seedling planting device 10 is operated to the rising side of the lifting range with respect to the traveling machine body.

When the turning travel is finished and the operation lever 98 is operated to the second lowered position D2 (operated to the second lowered position D2 and returned to the neutral position N), the control valve 44 is operated to the discharge position and the hydraulic cylinder 31 is operated. Is extended to lower the seedling planting device 10. And if the center grounding float 12 contacts the field surface G, automatic raising / lowering control and automatic rolling control will be started, and the seedling planting apparatus 10 will be in contact with the field surface G and stopped. In this state, the leveling rotor 50 is still maintained at the retracted position A3.

After operating the operating lever 98 to the second lowered position D2 and returning to the neutral position N, after traveling to the seedling planting start position, if the operating lever 98 is operated again to the second lowered position D2, automatic elevation control and automatic With the rolling control activated, the planting clutch 57 and the fertilization clutch 58 are automatically switched to the transmission state. Further, the elevating motor 78 is controlled so that the leveling rotor 50 is automatically moved from the retracted position A3 to the work position corresponding to the set leveling depth. This state corresponds to the leveling device B being in the working state.
At this time, as shown in FIG. 9A, the display state of the display device F is automatically switched to a display state that displays the leveling depth of the leveling rotor 50.

  When the operating lever 98 is operated to the right marker position R (operated to the right marker position R and returned to the neutral position N), the right marker 52 is operated to the operating posture by the electric motor 53, and the operating lever 98 is moved to the left marker position. When operated to L (operated to the left marker position L and operated to the neutral position N), the left marker 52 is operated to the acting posture by the electric motor 53. However, the operator performs the next work process in the planting work. The marker 52 on the side corresponding to is operated to the action posture.

  Then, when the automatic lifting control and the automatic rolling control are stopped and the planting clutch 57 and the fertilization clutch 58 are operated in the disconnected state, when the operation lever 98 is operated to the first raised position U1, the operation lever 98 is moved to the first position. While maintaining the 1 ascending position U1, the control valve 44 is operated to the supply position and the hydraulic cylinder 31 is contracted to raise the seedling planting device 10. Thereafter, when the operator releases the hand and the operation lever 98 returns to the neutral position N, the control valve 44 is operated to the neutral position to stop the raising of the seedling planting device 10. Therefore, the seedling planting device 10 can be raised to an arbitrary position.

  When the operation lever 98 is operated to the first lowered position D1 while the automatic raising / lowering control is stopped and the planting clutch 57 and the fertilizing clutch 58 are operated in the disconnected state, the operation lever 98 is moved to the first lowered position D1. During the maintenance, the control valve 44 is operated to the discharge position, the hydraulic cylinder 31 is extended, and the seedling planting device 10 is lowered. Thereafter, when the operator releases the hand and the operation lever 98 returns to the neutral position N, the control valve 44 is operated to the neutral position to stop the descent of the seedling planting device 10. Therefore, the seedling planting device 10 can be lowered to an arbitrary position.

  In the above description of the operation, the case where the leveling on / off switch 97 is operated to the on state has been described. However, when the leveling device B is instructed to be turned off by the leveling on / off switch 97, the seedling planting is performed. The leveling rotor 50 is maintained at the retracted position A3 (non-working state) regardless of the work status of the apparatus 10, and the display device F is automatically switched to a non-displaying state in which the leveling depth of the leveling rotor 50 is not displayed. The hidden state will be continued.

[Another embodiment]
(1) In the above embodiment, the seedling planting device 10 is exemplified as the paddy field working device, but instead, a fertilizer, a direct sowing device, a chemical spraying device, a rice bran spraying device, etc. for supplying paste-like fertilizer to the rice field, etc. May be provided.

(2) In the above embodiment, the leveling device B is exemplified as provided in the paddy field working device (seedling planting device 10). However, the leveling device 53 is supported by the paddy field working device (seedling planting device 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.

(3) In the above embodiment, the leveling rotor 50 is configured to be adjustable in height over the retreat position A3 and the work position A4. If the leveling rotor 50 is the retreat position A3, the leveling device B is in a non-working state. However, instead of such a configuration, a rotor clutch (not shown) capable of intermittently supplying power for rotationally driving the leveling rotor 50 is provided, and the rotor clutch is disengaged. If it is in a state, it may be determined that the leveling device B is in a non-working state.

(4) In the above embodiment, when the set leveling depth display unit 96 of the display device F is not displayed, both the rotor display 96A and the depth display 96B of the set leveling depth display unit 96 are turned off. However, only the depth display 96B may be turned off.

(5) In the above embodiment, the display device F is illustrated what is provided in the steering panel 62 of the machine body front, or as provided in the central portion of the steering handle 18, located on the side of the driver's seat 9a You may make it provide an armrest in the state and provide the display apparatus F in the armrest.

(6) In the above embodiment, the control unit H is, has been illustrated that respectively each other in the machine body side control portions H1 having a microcomputer and working machine control section H2 having a state of CAN communication, the controller H May be composed of one microcomputer.

The present invention is applicable to paddy working machine and a soil preparation device which performs leveling work with paddy working device for performing paddy operations such seedlings planting or direct seeding operations.

DESCRIPTION OF SYMBOLS 4 Link mechanism 10 Paddy field work apparatus 50 Leveling rotor 62 Control part panel 97 Operating state switching means B Leveling apparatus H Control means F Display means

Claims (2)

A leveling device comprising a leveling rotor that is provided with a paddy field working device that can be moved up and down via a link mechanism at the rear part of the body, and that is rotationally driven around an axis along the width direction of the body between the body and the paddy field working device. A paddy field work machine configured to be switchable between a working state in which the leveling work is performed and a non-working state in which the work is not performed,
The leveling device is configured to freely change and adjust the leveling depth of the leveling rotor with respect to the field surface,
Display means for displaying the leveling depth of the leveling rotor;
Manual operation type operation state switching means for commanding on / off of the operation of the leveling device;
When the operation state switching means is instructed to enter the operation of the leveling device, the leveling depth of the leveling rotor in the working state of the leveling device is displayed by the display means, and the operation state switching means If the leveling device is instructed to be turned off, the leveling device and the display unit are operated so that the leveling device is maintained in the non-working state and display by the display unit is not performed. Paddy field machine equipped with control means. The paddy field work machine according to claim 1 , wherein the display means is provided on a control panel of a front part of the machine body.

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