JP3821948B2 - Marker control device for transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a marker control device for a transplanter such as a riding rice transplanter, and more particularly to a marker control device for a transplanter that can automatically and alternately switch the left and right markers as a working unit is moved up and down.
[0002]
[Prior art]
In general, a transplanter such as a riding rice transplanter is a line that will serve as the vehicle run reference line for the next process during planting work in order to properly maintain the spacing between seedlings and improve the straightness of the aircraft. It has a marker device that draws
[0003]
Conventionally, as this kind of marker device, for example, the technique described in Japanese Patent Publication No. 7-102006 relating to the application of the present applicant is known, and according to this conventional example, the working position for lowering and feeding the marker to the side of the machine body In order to move to the non-working position where it is raised and stored, a mechanical lock member that holds the left or right marker in the non-working position is interlocked with the raising / lowering operation of the planting part. The left and right markers are automatically switched to the working position by moving up and down the planting portion when the body turns at the field edge by switching the left and right alternately with the lifting operation.
[0004]
That is, the switching control unit that controls the feeding of the marker device includes a left and right operating body that is linked to the raising and lowering of the planting unit and is connected to the left and right markers, a switching member that is switched by the movement of these operating bodies, and the switching And a locking member that restricts the movement of one of the left and right operating bodies by switching the member, and this locking member is biased in the direction of either the left or right operating body and has its tip Abuts against the side of the actuating body and protrudes when the actuating body moves and is released from contact, thereby restricting the movement of the actuating body in the reverse direction, thereby moving the left and right markers to the working position And a non-working position are alternately switched.
[0005]
[Problems to be solved by the invention]
However, the conventional marker device automatically switches the left and right markers by switching the mechanical locking member alternately left and right as the planting part moves up and down, and moving the planting part up and down at the end of the field. In the final stage of transplantation work, for example, when the marker cannot be lowered due to obstruction due to dredging, the driver turns backward and moves the lock member left and right. Complicated work such as having to switch to the neutral position of the body was necessary.
[0006]
  The present invention has been made to solve such a problem, and its object is to improve the operability of the marker during transplantation work.WasIt is providing the marker control apparatus of a transplanter.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, the invention according to claim 1 is directed to a traveling machine body (5) having a driver's seat (9) that supports the working unit (10) through a link mechanism (8) so as to be lifted and lowered. Of a transplanter equipped with left and right markers (50R, 50L) that draw a running reference line of the running aircraft on the surfaceMarker control deviceIn
Working part raising / lowering drive means (35, 19) for raising and lowering the working part (10);
The left and right markers (50R, 50L), which are raised to the non-working position as the working part (10) is raised and held at the non-working position, are moved to the working position where the left and right markers (50R, 50L) are lowered toward the machine body as the working part is lowered. Marker switching means (46, 40) for switching so that
A height detecting means (87) for detecting an elevation position of the working unit;
The driver (9) is disposed near the handle (13) in front of the driver's seat (9), commands for raising and lowering the working unit (10), a command for selecting which of the left and right markers is the working position, and the working machine A hand operating lever (38) capable of transmitting an automatic command for alternately switching the feeding of the left and right markers to the working position automatically as they move up and down;
An operation signal is transmitted to the working unit raising / lowering driving means (35) based on the raising and lowering commands of the working part by the hand operating lever (38), and the working part (10) is produced based on the height detecting means (87). ) Receives a marker selection command and an automatic command from the hand operating lever (38) only when it is detected that the left and right markers are in the non-working position where the left and right markers are stowed up and stored, and the working unit is moved to a predetermined lowered position based on the lowering command. A control unit (39) for transmitting an operation signal based on a selection command and an automatic command from the received hand control lever to the marker switching means (46)And).
[0008]
  The invention according to claim 2The hand operating lever (38)A mode switching unit (52) capable of selecting a stop mode for stopping the feeding of the left and right markers (50R, 50L), an automatic mode for alternately switching the feeding of the left and right markers, and a dual mode for feeding the left and right markers simultaneously. Prepared,
  The control section (39) receives an instruction from the mode switching section (52) and transmits an operation signal to the marker switching means (46).
[0009]
  The invention described in claim 3The hand operating lever (38)Push button (54a) that can be operated by pressing operationWith
  Each time the push button is operated, a command for switching the left and right markers to be selected is sent to the control unit (39).
[0011]
[Action]
Based on the above-described invention specific matters, the transplanter (1) is supported by the traveling machine body (5) through the link mechanism (8) so that the working unit (10) can be moved up and down, and the traveling machine body (5) in a field scene. Left and right markers (50R, 50L) that draw the travel reference line are attached. The left and right markers (50R, 50L) are moved by the marker control unit (39, 40) into a non-working position where the work unit (10) is lifted and retracted and a work position which is lowered and fed out to the side of the machine body. It is possible to switch alternately. Thus, for example, after the right marker (50R) is first drawn out to the working position, a line is drawn on the farm scene and turned around at the headland, the left marker (50L) on the opposite side is then drawn out to the working position. If the transplanting operation is performed while drawing a line on the farm scene, it is possible to perform transplantation in an aligned manner along the reference line while running using the reference line as a guide.
[0012]
Further, the hand operation lever (38) is provided with a switching operation part (54) for selecting the alternate switching of the left and right markers (50R, 50L) by the marker control part (39, 40). By operating the unit (54), it is possible to arbitrarily select the feeding of the left and right markers (50R, 50L).
[0013]
In addition, the code | symbol in the parenthesis mentioned above is shown in order to refer drawings, Comprising: The structure of this invention is not limited at all.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
As shown in FIG. 1, the riding rice transplanter 1 has a traveling machine body 5 supported by front wheels 2 and rear wheels 3. The traveling machine body 5 has an engine 6 in a hood 4 at a front portion of the front wheel. A driver's seat 9 having a seat 7 is disposed in the middle of the traveling machine body 5 in the front-rear direction. A manual operation lever 17 is provided on the side of the seat 7, and the manual operation lever 17 is “raised”, “fixed”, “lowered (automatic)”, “planted” along the lever guide 21. (Automatic) "can be operated at each position.
[0016]
Behind the traveling machine body 5, a planting unit 10 as a working unit is supported through a lifting link mechanism 8 so as to be movable up and down, and a large number of planters, flow baskets 14 and mat seedlings are vertically mounted on the planting unit 10. A seedling stage 12 that can be placed in the direction is provided. In addition, markers 50 </ b> R and 50 </ b> L are attached to both left and right ends of the planting unit 10. The markers 50R and 50L are automatically and alternately switched between a working position that moves down to the side of the machine body and a non-working position that is raised and retracted as the planting unit 10 moves up and down. A traveling reference line of the traveling machine body 5 can be drawn on the surface.
[0017]
The traveling machine body 5 is provided with a hydraulic cylinder device 19 between a link bracket 44 fixed to the elevating link mechanism 8, and based on the operation of the manual operation lever 17, the rear cover 26 below the seat seat 7. The hydraulic control valve 35 is controlled via the control unit 39 disposed therein, and the hydraulic cylinder device 19 is further expanded and contracted by the hydraulic control valve 35, so that the planting unit 10 moves up and down. The operation position of the manual operation lever 17 is detected by a lever position detection potentiometer 42, and the hydraulic control valve 35 is controlled via the control unit 39 in accordance with the detected value.
[0018]
In the present invention, as the working unit 10 is moved up and down, the marker control unit that can be switched alternately between a working position in which the left and right markers 50R and 50L are lowered and fed out to the side of the machine body and a non-working position in which the working unit is raised and stored, and the marker A hand operating lever having a switching operation unit for selecting alternate switching of the left and right markers 50R and 50L by the control unit.
[0019]
The marker control unit includes the control unit 39 (see FIG. 6) and a marker switching mechanism 40 (see FIGS. 3 and 4). As the planting unit 10 is moved up and down by the lift link mechanism 8, the left and right markers Switching control is automatically and alternately performed between the non-working position where 50R and 50L are raised and housed and the working position where the work is drawn out to the side of the machine body.
[0020]
As shown in FIG. 2, a steering wheel 13 is provided at the front of the driver's seat 9, and a hand operating lever 38 is provided above the steering column 13 a of the steering wheel 13. The hand operating lever 38 is attached to a switch box 51 provided in the steering column 13a below the steering wheel 13, and has a mode switching unit 52 that can be rotated and held at a predetermined position around the lever shaft core, and a control. And a switching operation unit 54 for selecting alternate switching of the left and right markers 50R and 50L by the unit 39.
[0021]
The mode switching unit 52 includes a switching switch in the switch box 51, and a stop mode (cut position) for stopping the feeding of the left and right markers 50R and 50L by the turning operation of the hand operating lever 38, and the left and right markers. The automatic mode (automatic position) for automatically switching the feeding of 50R and 50L and the dual mode (left and right position) for feeding the left and right markers 50R and 50L simultaneously can be selected.
[0022]
That is, in the stop mode, the changeover switch is off and the left and right markers 50R and 50L are not fed out. In the automatic mode, for example, the order of the left and right markers 50R and 50L fed out is automatically switched every time the planting unit 10 is raised and lowered once. Furthermore, in the case of both modes, both the left and right markers 50R and 50L are fed out by setting one marker in the extended state and setting the other marker in the extended state while the planting unit 10 is descending.
[0023]
The switching operation unit 54 has an automatic return type push button switch 54a that can be operated by a pressing operation, and selects a marker to be lowered and fed out of the left and right markers 50R and 50L each time the push button switch 54a is pressed once. It can be done. When the push button switch 54a is operated when the mode switching unit 52 is in the automatic mode and the planting unit 10 is in the raised state, it will be described later that the planting unit 10 has been lowered to a predetermined position. When the square potentiometer 87 detects, the alternate feeding order of the left and right markers 50R and 50L is switched.
[0024]
As shown in FIGS. 3 and 4, the marker switching mechanism 40 is provided below the seat 7, and a pin 57 is erected on the base plate 56. A switching lever 58 is provided on the pin 57. It is pivotally mounted so that it can rotate. The switching lever 58 has a substantially L-shaped cross section, has a tongue piece 59 projecting sideways, and has holes 60 and 60 formed at substantially symmetrical positions around the pin 57, respectively. .
[0025]
On the other hand, a marker switching motor 46 is disposed near the side of the switching lever 58, and an operating arm 48 is fixed to the motor shaft 46a. Then, when the operating arm 48 rotates clockwise or counterclockwise, and its tip end abuts against the tongue piece 59 and presses it, the switching lever 58 is rotated in the same direction around the pin 57. Rotate. A limit switch 49 is provided on the side of the marker switching motor 46, and the initial position (home position) of the operating arm 48 is detected by the limit switch 49.
[0026]
  Further, on the base plate 56 behind the pin 57, a shaft 61 supported on the body frame at the left and right ends is provided horizontally, and cams 62, 62 swing on the shaft 61 in the longitudinal direction of the body. It is pivotally attached as possible. The cams 62 and 62 have holes 63 and 63 formed in the middle in the height direction, and have protrusions 62a and 62a protruding rearward. Rods 64 and 64 are attached between the holes 63 and 63 and the holes 60 and 60 formed in the switching lever 58, respectively. One end side of the rods 64 and 64 is attached to the switching lever 58 by bolts 65 and 65, and the other end side is bent inward and locked to the cams 62 and 62. These cams 62, 62 are arranged around the shaft 61 by torsion springs 66, 66 in FIG.AntiIt is urged clockwise.
[0027]
Further, the arms 67 and 67 are pivotally mounted around the fulcrum shaft 68 so as to face the cams 62 and 62. The arms 67, 67 are provided with pins 69, 69 which are in contact with the cams 62, 62 on the front end side facing the cams 62, 62, and roller receivers 70, 70 are fixed on the rear end side. Further, wire attachment holes 71, 71 are formed at the center tip side.
[0028]
Below the fulcrum shaft 68, a horizontal shaft 75 is pivotally supported by the body frame, and an intermediate portion of brackets 76, 76 is pivotally attached to the horizontal shaft 75. A roller 77 is attached to the front end side of the left and right brackets 76 so as to be able to contact the roller receivers 70, 70 of the arms 67, 67, and a front end portion of the plate 78 via a connecting pin 79 on the rear end side. Are connected. The rear end of the plate 78 is attached to the link bracket 44 by a pin 85. The link bracket 44 is fixed to the base end portion of the elevating link mechanism 8. The elevating link mechanism 8 is pivotally supported by a shaft 86 that is bridged between the left and right body frames.
[0029]
The wire attachment holes 71, 71 are engaged with connecting pins 72, 72 of inner wires 73a, 73a, and the other ends of the inner wires 73a, 73a are connected to the left and right markers 50R, 50L, respectively. One end of each of the outer wires 73 and 73 is attached to the bracket 74 by a screw 92 so as to be adjustable, and the other end is fixed to a marker base rotating member 93 described later.
[0030]
As shown in FIGS. 5A and 5B, the left and right markers 50R and 50L are rotated by the marker pivot pin 91 via the marker base rotating member 93 on the left and right stays 81 for supporting the seedling table 12. It is supported freely. The left and right markers 50R, 50L are drawn up and stored on the back surface of the seedling platform 12, and are fed out below the side of the planting unit 10 so that the bent side tip a contacts the field scene. The markers 50R and 50L are urged so as to be in the working position by feeding springs 83 and 83 stretched between the planting frames 82 and 82.
[0031]
3 and FIG. 4, for example, the marker switching motor 46 is rotated once in the clockwise direction in FIG. 3 from the initial position based on a feed command for the right marker 50R from the control unit 39. Return to the original position and stop. At this time, the operating arm 48 also rotates in the same direction, and the operating arm 48 presses and biases the tongue piece 59 of the switching lever 58. As a result, the switching lever 58 swings counterclockwise about the pin 57 and pulls the right rod 64 to the right in the drawing. Then, the right cam 62 rotates about the shaft 61 in the clockwise direction in FIG. 4, and the engagement between the protrusion 62 a and the pin 69 of the right arm 67 is released. As a result, the right arm 67 rotates clockwise around the fulcrum shaft 68, the wire attachment hole 71 at the tip rotates in the same direction, the inner wire 73a is pulled by the feeding spring 83, and the right marker 50R is operated. It is drawn out to the position.
[0032]
On the other hand, when the planting travels to the headland and turns the traveling body 5 on the headland, when the hydraulic cylinder device 19 is actuated and the planting part 10 is raised, the link fixed to the base of the lift link mechanism 8 Since the bracket 44 rotates clockwise about the shaft 86, the plate 78 is pulled leftward in FIG. 4, the bracket 76 rotates clockwise about the horizontal shaft 75, and the roller 77 is the roller of the arm 67. Lift the receptacle 70. Then, the arm 67 rotates counterclockwise about the fulcrum shaft 68, pulls the inner wire 73a through the wire attachment hole 71, raises the right marker 50R, and stores the right marker 50R in the non-working position.
[0033]
Next, when the traveling unit 5 is turned and the planting unit 10 is lowered and the lift angle potentiometer 87 detects that the planting unit 10 is lowered to a predetermined position, the control unit 39 detects the left marker 50L opposite to the above. Based on this command, the marker switching motor 46 makes one turn counterclockwise in FIG. 3 from the initial position, returns to the original position, and stops. At this time, the operating arm 48 also rotates in the same direction, and the operating arm 48 presses and biases the tongue piece 59 of the switching lever 58. As a result, the switching lever 58 swings clockwise around the pin 57 and pulls the left rod 64 to the right in the drawing. Then, the left cam 62 rotates about the shaft 61 in the clockwise direction in FIG. 4, and the engagement between the protrusion 62 a and the pin 69 of the left arm 67 is released. As a result, the left arm 67 rotates clockwise about the fulcrum shaft 68, the wire attachment hole 71 at the tip rotates in the same direction, the inner wire 73a is pulled by the feeding spring 83, and the left marker 50L is operated. It is drawn out to the position.
[0034]
Furthermore, when reaching the headland, the planting part 10 is raised, and the link bracket 44 at the base of the lifting link mechanism 8 rotates clockwise about the shaft 86, the plate 78 is pulled to the left in FIG. The bracket 76 rotates clockwise about the horizontal shaft 75, and the roller 77 lifts the roller receiver 70 of the arm 67. Then, the arm 67 rotates counterclockwise about the fulcrum shaft 68, pulls the inner wire 73a through the wire attachment hole 71, raises the left marker 50L, and stores the left marker 50L in the non-working position.
[0035]
Similarly, the left and right markers 50R and 50L are alternately switched each time the traveling machine body 5 reaches the headland and the planting unit 10 moves up and down. In order to change the alternate feeding order of the left and right markers 50R and 50L, it can be changed by pressing the push button switch 54a of the hand operation lever 38 once.
[0036]
In the above description, for example, when traveling on the road or the like, the marker 50 is normally fixed to the machine body so that it is not drawn out. The marker 50 can be fed only when the planting switch 90 is on. Further, in consideration of the case where only the line is drawn with the marker 50 before the planting work, in the automatic mode, the marker 50 is automatically extended only when the planting clutch is “ON”. Yes. Further, for example, in FIG. 3, even if the operating arm 48 has deviated from the home position before the marker switching motor 46 is turned on, the operating arm 48 is automatically set by turning on the power. It has a configuration capable of returning to the position.
[0037]
FIG. 6 shows a control block diagram. The control unit 39 has a microcomputer (hereinafter referred to as CPU), and the CPU includes the mode switching unit 52, switching operation unit 54, limit switch 49, lift angle. Signals from the potentiometer 87 and the clutch motor potentiometer 88 are input, and the CPU controls the lamps 84L and 84R for informing whether or not the marker 50 is at the working position and the marker switching motor 46. The lift angle potentiometer 87 detects the ascending / descending position of the planting unit 10, and the clutch motor potentiometer 88 detects the on / off state of the planting clutch.
[0038]
Next, the hand operating lever 38 can be controlled to switch between the markers 50R and 50L by operating the lever, and can also be controlled to be moved up and down by rotating in the vertical direction.
[0039]
That is, the hand operating lever 38 shown in FIG. 2 is urged so as to automatically return to the reference position when the hand is released when the hand operating lever 38 is rotated in the vertical direction (arrow direction) by a resilient member (not shown). After the start of the descent, the reference position which is the return position, the raised position displaced upward from the reference position (planting part ascending), the lowered position displaced downward from the reference position (planting part descending) It is possible to switch to the planting position (planting unit descending) where the hand operating lever 38 is displaced downward again.
[0040]
For this reason, the hand operating lever 38 in the present embodiment serves as both a lever for switching the markers 50R and 50L and a lever for raising and lowering the planting unit 10.
[0041]
As shown in FIG. 7, the display panel 80 in front of the driver's seat has monitor lamps 84R and 84L for informing that the planting switch 90 and the left and right markers 50R and 50L for operating various monitors and alarm buzzers are extended. Various switches such as a horn switch 94, a light ON / OFF switch 95, a combination switch 96, a winker lever 97 and the like are arranged. The driver can perform the transplanting operation while looking at the display panel 80. However, in the present embodiment, only when the planting switch 90 is in the ON operation state, the driver is accompanied by the lowering operation of the planting unit 10. One or both of the left and right markers 50R and 50L can be extended so that the left and right markers 50R and 50L are not extended even when the planting portion 10 is lowered except during work.
[0042]
Next, the control operation of the present embodiment will be described based on the flowcharts of FIGS.
[0043]
In FIG. 8, prior to work, first, in routine A, it is determined whether the planting switch 90 is on or off. If it is on, the marker mode is set in routine B, and then in routine C, the display panel 80 in front of the driver's seat is used. Marker monitor display is enabled, and marker control is performed in routine D. If the planting switch 90 is turned off in the routine A, the auto marker mode flag, the marker left / right feed mode flag, the direction switching flag, the marker instruction flag, etc. are all cleared in the routine E.
[0044]
FIG. 9 shows a flowchart of the marker mode setting.
[0045]
In the figure, in S1, it is determined whether or not the planting unit 10 is in the marker storage position, that is, the fixed position or the raised position. If it is in the marker storage position, the marker monitor flag is set in S2, and the process proceeds to S3. If the planting part 10 is other than the above in S1, it returns to the original.
[0046]
In S3, it is determined whether or not the auto mode (automatic mode) is set by operating the mode switching unit 52 of the hand control lever 38. If the auto mode is set, the auto marker mode flag is set in S4, and the process proceeds to S7. If the auto mode is not set in S3, the auto marker mode flag is reset and the direction switching flag is reset in S5 to S6.
[0047]
  In S7, it is determined whether or not the auto marker mode flag is set. If it is set, the process proceeds to S8, whereAt S47Marker(motor)It is determined whether or not the left / right swing (feed) operation flag is set. If the reset state is determined in S8, the process proceeds to S12, where it is determined whether or not the marker operation flag is set. If it is set, the marker operation flag is reset in S14, and the process proceeds to S15. In S15, it is determined by the clutch motor potentiometer 88 (see FIG. 6) whether or not the planting clutch engagement flag is set. If it is set, the direction switching flag is reversed in S16, and then S17. To reset the planting clutch on flag.
[0048]
  If the marker left / right swing operation flag is set in S8 described above, the marker in S13(motor)Left / right feeding operation flag(S47)And marker operation flag(S50)Is reset, and the process proceeds to S17. If the marker operation flag is in the reset state in S12 and if the planting clutch engagement flag is in the reset state in S15, the process proceeds to S17.
[0049]
That is, when the auto marker mode is set, it is possible to switch the left and right markers 50 only when the planting switch 90 is on and the planting clutch is engaged. This is because when the marker 50 only draws a line on the field, if the auto marker mode is used, the feeding of the left and right markers 50 is automatically switched by the lifting / lowering operation of the planting unit 10, and a switching operation is required each time. This is because it is bothersome.
[0050]
  Next, in S18, the direction changeover switch, that is, the changeover operation portion 54 of the hand operation lever 38 is displayed.Push button 54aIt is determined whether or not there is an operation, and if so, the direction switching flag is reversed in S19 and the process proceeds to S20.
[0051]
On the other hand, if the auto marker mode flag is in the reset state in S7 described above, it is determined in S9 whether or not the marker left / right feeding operation switch is on. If it is on, the marker left / right feeding mode flag is set in S10. The left / right feed mode flag is reset and the process proceeds to S20.
[0052]
In S20, it is determined whether or not the auto marker mode flag is set. If it is set, the process proceeds to S21, and if it is reset, the process proceeds to S22. In S21, it is determined whether or not the direction switching flag is set. If reset, the right (R) marker instruction flag is set in S26, and if it is set, the left (L) marker instruction flag is set in S25. To do. In S22, it is determined whether or not the marker left / right feeding mode flag is set. If it is set, the marker instruction flag is set to R & L (left and right marker feeding) in S23, and if reset, the marker instruction flag is set in S24. Reset.
[0053]
FIG. 10 shows a flowchart of marker control.
[0054]
In the same figure, it is determined in S31 whether or not the planting unit 10 is in the operable position of the marker 50. This is because the lift position potentiometer 87 (see FIG. 6) detects the ascending / descending position of the planting unit 10. This is possible. If the planting unit 10 is at the operable position of the marker 50, it is determined in S32 whether the limit switch 49 (see FIG. 3) for detecting the initial position of the marker switching motor 46 is on or off. If the limit switch 49 is on in S32, it is determined in S33 whether the previous limit switch 49 is on or off.offIf so, the driving of the marker switching motor 46 is stopped in S34, and the process proceeds to S37.
[0055]
In S37, it is determined whether or not the marker instruction flag is set to R & L. If it is set to other than R & L, the marker instruction flag is reset in S38 and the process proceeds to S41.
[0056]
On the other hand, in S33 described above, the previous limit switch 49 isonThen proceed to S35, here planting clutchofIf it is on / off, the planting clutch on / off flag is set in S36 and the process proceeds to S41. If the marker instruction flag is set to R & L in S37, the marker instruction flag is set to the left (L) in S39, and the OFF timer of the marker switching motor 46 is started in S40, and the process proceeds to S41.
[0057]
In S41, it is determined whether the marker instruction flag is set. If it is set, it is determined in S42 whether the OFF timer of the marker switching motor 46 is zero. If the OFF timer is 0 in S42, the process proceeds to S43, and if it is not 0, the driving of the marker switching motor 46 is stopped in S44.
[0058]
In S43, it is determined whether or not the marker instruction flag is set to the left (L). If it is set to other than left (L), the marker switching motor 46 is driven in the right (R) direction in S45. The process proceeds to S46. On the other hand, if the marker instruction flag is set to the left (L) in S43, the marker motor is driven in the L direction in S49, and the marker operation flag is set in S50.
[0059]
In S46, it is determined whether or not the marker instruction flag is set to R & L. If it is set to R & L, the marker motor left / right feeding operation flag is set in S47, and if it is set to other than R & L in S46, S48 is set. Set the marker operation flag with.
[0060]
On the other hand, if the planting unit 10 is not in the operable position of the marker 50 in S31 described above, the process proceeds to S51, where it is determined whether or not the planting unit 10 is in the marker storage position (that is, the raised position or the fixed position). If the planting unit 10 is in the marker storage position, the process proceeds to S52. If not, the driving of the marker switching motor 46 is stopped in S44. In S52, it is determined whether or not the hydraulic valve cam position is in the “raised” or “fixed” position. If it is in the “raised” or “fixed” position, the process proceeds to S53, and if not, the process proceeds to S44. In S53, it is determined whether the limit switch 49 is on or off. If it is on, the process proceeds to S44, and if it is off, the process proceeds to S54. In S54, it is determined whether or not the marker instruction flag is set to the left (L). If it is set to other than left (L), the marker motor is driven in the R direction in S55 and set to the left (L). If so, the marker motor is driven in the L direction in S56. In S53 to S56, when the operating arm 48 is out of the fixed position when the power is turned on, it automatically returns to the fixed position.
[0061]
FIG. 11 shows a flowchart of marker monitor display.
[0062]
In the figure, in S61, it is determined whether or not the marker monitor flag is set. If it is set, the process proceeds to S62. If it is in the reset state, the marker monitor is turned off in S68. In S62, it is determined whether or not the auto marker mode flag is set. If it is set, it is determined in S63 whether or not the direction switching flag is further set. If reset, the marker monitor R is lit in S64. If it is set, the marker monitor L is turned on in S65. In S62, if the auto marker mode flag is in the reset state, it is determined in S66 whether or not the marker left / right feed mode flag is set. If it is set, the R & L of the marker monitor is turned on in S67. Press to turn off the marker monitor.
[0063]
【The invention's effect】
  As described above, according to the invention of claim 1,By operating the hand control lever, the working unit can be moved up and down, and the left and right markers can be selected and automatically operated, thereby facilitating the operation. Also, because the working part is lifted and operated with the same hand operating lever, erroneous operations are likely to occur, but if the working part is not in the non-working position of the raised marker, it will not accept commands related to the marker on the hand operating lever. Inadvertent marker operation due to the erroneous operation can be prevented.
In addition, when the working unit is in the predetermined lowered position, an operation signal based on a marker command from the hand operating lever is transmitted to the marker switching means. Therefore, when the working unit is in the lowered state, the operator operates while looking at the working unit. Therefore, an inadvertent marker operation can be immediately detected, and by stopping the operation, it is possible to prevent the existing seedlings from being overturned by the inadvertent marker operation immediately after the transplanter turns.
[0064]
According to the second aspect of the present invention, the hand operating lever includes a mode switching unit that can be selected between the stop mode, the automatic mode, and the both modes of the left and right markers, so that the operation lever in the transplanting operation can be selected. The feeding mode of the left and right markers can be adjusted freely with a simple operation.
[0065]
According to the third aspect of the present invention, since the switching operation portion that can switch the feeding of the left and right markers is a push button type that can be operated by a pressing operation, the marker can be switched by a so-called one-touch operation. The operability of switching between the left and right markers can be improved.
[Brief description of the drawings]
FIG. 1 is a side view schematically showing a riding rice transplanter to which the present invention is applied.
FIG. 2 is an external perspective view of a hand control lever attached to a steering column.
FIG. 3 is a plan view of a marker switching mechanism.
FIG. 4 is a side view of a marker switching mechanism.
5A and 5B are diagrams showing an outline of a marker device. FIG.
FIG. 6 is a configuration block diagram of a control unit.
FIG. 7 is a diagram showing an outline of a display panel in front of a driver seat.
FIG. 8 is a diagram showing a main flowchart in marker control.
FIG. 9 is a flowchart illustrating a mode setting portion in marker control.
FIG. 10 is a flowchart illustrating a marker control portion in marker control.
FIG. 11 is a flowchart of a marker monitor display portion in marker control.
[Explanation of symbols]
1 Passenger rice transplanter
5 traveling aircraft
7 seats
8 Lifting link mechanism
9 Driver's seat
10 planting department
13 Steering wheel
38 Hand control lever
39 Control unit
40 Marker switching mechanism
46 Marker switching motor
46a shaft
48 Actuating arm
49 Limit switch
50R, 50L marker device
52 Mode switching part
54 Switching operation section
54a Pushbutton switch
58 Switching lever
59 Tongue
62 cam
67 arms
68 fulcrum shaft

Claims (3)

In a marker control device for a transplanter that includes a left and right marker that supports a working unit on a traveling machine body having a driver's seat so as to be movable up and down via a link mechanism and draws a traveling reference line of the traveling machine body on a farm scene,
A working part raising / lowering driving means for raising and lowering the working part;
Marker switching means for switching the left and right markers, which are raised to the non-working position as the working part is raised and held at the non-working position, to the working position where the working part is lowered and fed to the side of the machine body as the working part is lowered. ,
A height detecting means for detecting an elevation position of the working unit;
Arranged in the vicinity of the steering wheel in front of the driver's seat, the command for raising and lowering the working unit, the command for selecting which of the left and right markers is the working position, and the left and right markers automatically when the working machine is raised and lowered A hand control lever that can send an automatic command to alternately switch the work position to
A non-working position in which an operation signal is transmitted to the working unit lifting / lowering driving means based on a command for raising and lowering the working unit by the hand operating lever, and the working unit raises and stores the left and right markers based on the height detecting means. Only when it is detected that there is a marker, a marker selection command and an automatic command are received by the hand operating lever, and when it is detected that the working unit is at a predetermined lowered position based on the lowering command, the hand operating lever A control unit for transmitting an operation signal based on a selection command and an automatic command to the marker switching unit,
A marker control device for a transplanter characterized by the above. The hand control lever includes a mode switching unit that can be selected between a stop mode for stopping the feeding of the left and right markers, an automatic mode for alternately switching the feeding of the left and right markers, and a dual mode for feeding the left and right markers simultaneously,
The control unit is configured to receive an instruction from the mode switching unit and transmit an operation signal to the marker switching unit.
The marker control device for a transplanter according to claim 1 . The hand control lever includes a push button that can be operated by a pressing operation ,
Each time the push button is operated, a command for switching the left and right markers to be selected is sent to the control unit.
The marker control device for a transplanter according to claim 1.

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