JP2004275066A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter with which the useless change of the shaking out direction of markers by an auto marker is avoided and reset of the shaking out direction of the markers is dispensed with. <P>SOLUTION: The riding type rice transplanter is equipped with an auto marker function for alternately shaking out right and left markers 8R and 8L. After either the right marker 8R or the left marker 8L is shaken out by the auto marker function, the other marker 8R or 8L is shaken out. When a planting clutch is engaged during the next rise of the planting part after the markers 8R and 8L at both the right and left sides are shaken out, at the next fall of the planting part, the marker 8R or 8L shaken out later at the previous fall of the planting part is shaken out. On the other hand, when the planting clutch is not engaged during the next rise of the planting part, at the next fall of the planting part, the marker 8R or 8L shaken out before at the previous fall of the planting part is shaken out. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention belongs to the technical field of a transplanter such as a riding rice transplanter having a pair of left and right markers, and particularly relates to a transplanter having a bilateral swinging function of swinging out left and right markers.
[0002]
[Prior art]
Generally, a transplanter such as a riding rice transplanter is provided with a marker for drawing a running reference line in the next step in order to properly maintain the interval between seedlings. This type of marker is usually provided on both the left and right sides of the planting section, and not only is the storage and swing-out operation performed automatically as the planting section moves up and down, but also every time the planting section moves up and down. The left and right markers are alternately switched (automatic marker function).
[0003]
By the way, when performing planting work in a deformed field, or when performing planting work simultaneously with multiple transplanters, it is better to draw a running reference line on the left and right sides when running the first stroke. Work efficiency may be improved. Therefore, in order to cope with such a working mode, a transplanter has been proposed in which markers on both the left and right sides are configured to be able to swing out (bilateral swinging function), and an operating tool for bilateral swinging is provided. Reference 1).
[0004]
[Patent Document 1]
JP-A-5-30805 (page 3, FIG. 6)
[0005]
[Problems to be solved by the invention]
By the way, the transplanter disclosed in Patent Document 1 is configured to automatically return to the auto marker state when the implanted part is raised after swinging out the markers on both the left and right sides. May not be appropriate. Hereinafter, a case in which the marker swing direction is inappropriate will be specifically described.
[0006]
FIG. 12 shows a case where planting is performed in the following procedure.
1) First, the vehicle travels in the process (A) of turning and planting. At this time, planting is not performed, and a traveling reference line is drawn in the next step (B) (left marker is issued).
2) Planting starts from the next step (B). At this time, left and right markers are drawn out (left and right marker drawing) in order to draw a traveling reference line in the surrounding planting process (A) and the next process (C).
3) From the following steps (C and subsequent steps), a travel reference line is drawn only in the next step (left marker is drawn, and then left and right are alternately drawn).
[0007]
When planting is performed in the above procedure, the planting part may be lowered at the end of the step (B) in which the markers on both sides are swung to carry out the seedling transfer to the seedling mounting table. At this time, the conventional transplanting machine mistakenly recognizes that the transplanting section is going up and down due to the turning of the body, and the auto marker function switches the marker swinging direction. Therefore, the transplanting section is moved at the beginning of the next step (C). When the marker is lowered, the marker swinging direction is reversed. In such a case, there is a problem that workability is deteriorated because the marker swing direction must be reset.
[0008]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and has been made with a view to solving these problems, and has a traveling body having a driving operation unit and a plant that is connected to a rear part of the traveling body so as to be able to move up and down. Attaching part, a raising / lowering actuator for raising / lowering the planting part, a planting clutch for turning on / off the power supply to the planting part, and a planting part which is stored as the planting part rises and is planted. A transplanter comprising: a pair of left and right markers selectively oscillated along with the lowering of the attachment portion; and auto marker means for alternately oscillating the left and right markers in accordance with the raising and lowering operation of the planting portion. After the marker means oscillates one marker, the other marker is also oscillated according to a predetermined operation. , The planting clutch engages When the next planting part descends, the marker that was dispensed after the previous planting part descending is drawn out at the time of the next planting part descending, while the markers on both the left and right sides are brought out until the next planting part rises During this time, when the planting clutch is not engaged and the operation is not performed, the marker that was previously sprayed out at the time of the previous planting portion descent is thrown out at the next planting portion descent.
In other words, after the markers on both the left and right sides are swung, the next marker swing direction is determined based on whether or not the planting clutch has been engaged and operated before the next ascent of the planting section is elevated. It is possible to prevent the swing direction from being uselessly switched by the auto marker, and as a result, it is not necessary to reset the marker swing direction.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine of a riding rice transplanter, and a planting section 3 is connected to a rear portion of the traveling machine 1 via a lifting link mechanism 2. A lift cylinder (elevating actuator) 4 is interposed between the traveling machine body 1 and the elevating link 2, and the elevating operation of the planting section 3 is performed based on the expansion and contraction thereof.
[0010]
The traveling machine body 1 is provided with a lift cylinder hydraulic valve 5 and a lift cam 6 linked to a planting clutch mechanism (not shown). The lift cam 6 has four positions of “raise”, “fix”, “lower”, and “plant”, and the positions are switched by the lift cam motor 7. In the “up” position, the lift cylinder hydraulic valve 5 is in the raised state and the planting clutch mechanism is in the off state. In the “fixed” position, the lift cylinder hydraulic valve 5 is in the stopped state and the planting clutch mechanism is in the off state. In the “lower” position, the lift cylinder hydraulic valve 5 is in a lowered state (automatic raising / lowering control state by sensing float), and the planting clutch mechanism is in a disengaged state. In the “planting” position, the lift cylinder hydraulic valve 5 is in a lower state ( The automatic lifting / lowering control state by the sensing float) is set, and the planting clutch mechanism is set in the on state.
[0011]
Markers 8L and 8R are provided on both left and right sides of the planting section 3 for drawing a traveling reference line in the next or previous stroke. Each of the markers 8L and 8R is configured to be freely rotatable and deformable between a drawing posture swinging out to the left and right sides and a storage posture standing up along the side of the planting section 3, and swinging out by a spring 9. Biased in the direction. On the other hand, the traveling body 1 is provided with a pair of left and right marker operation arms 10L and 10R, and the marker operation arms 10L and 10R are connected to the base ends of the markers 8L and 8R via wires 11L and 11R, respectively. Are linked. When the marker operation arms 10L and 10R rotate forward, the wires 11L and 11R are pulled, and the markers 8L and 8R are retracted. On the other hand, when the marker operation arms 10L and 10R rotate rearward, the wires 11L and 11R is loosened, and the swing-out operation of the markers 8L and 8R is allowed.
[0012]
A roller arm 14 having a roller 13 is further provided on the plate 12 that supports the marker operation arms 10L and 10R to be able to rotate back and forth. The roller arm 14 is connected to a base end of the elevating link mechanism 2 via a rod 15, and rotates forward and backward in accordance with the elevating operation of the elevating link mechanism 2. When the roller arm 14 rotates forward with the elevation of the lifting link mechanism 2, it pushes the left and right marker operation arms 10 L and 10 R forward via the rollers 13, and with the lowering of the lifting link mechanism 2. When rotated backward, the left and right marker operation arms 10L and 10R are allowed to rotate backward. Thereby, the storing operation and the oscillating operation of the markers 8L and 8R are automatically performed according to the elevation of the planting section 3.
[0013]
A pair of left and right stopper arms 16L, 16R is provided in front of the marker operation arms 10L, 10R. Each of the stopper arms 16L and 16R is configured to be rotatable back and forth about the support shaft 17, and is urged rearward by springs 18L and 18R. Then, when the marker operation arms 10L, 10R rotate forward, the stopper arms 16L, 16R are pushed by the pins 10a of the marker operation arms 10L, 10R, retreat and rotate forward, and then return and rotate back. To engage with the marker operation arms 10L and 10R. In this state, since the rotation of the marker operation arms 10L and 10R is locked, even if the planting section 3 is lowered, swinging out of the markers 8L and 8R is restricted.
[0014]
Further, a marker switching arm 19 is provided in front of the stopper arms 16L and 16R. The marker switching arm 19 is a seesaw-shaped member that turns in the left-right direction and swings back and forth about a central support shaft 20, and has rods 21 L, 21 R connected to stopper arms 16 L, 16 R at both ends. Are flexibly connected. That is, when the marker switching arm 19 is in the neutral position, the forward and backward rotation of the stopper arms 16L and 16R is allowed, so that the swinging of the markers 8L and 8R is restricted by the stopper arms 16L and 16R, while the marker switching arm 19 Is tilted to the left or right, one of the stopper arms 16L, 16R is pulled forward via the rods 21L, 21R, and the one marker 8L, 8R is allowed to swing. Thereby, by the operation of the marker switching arm 19, it becomes possible to selectively swing out the left and right markers 8L and 8R, and to regulate swinging out of both the markers 8L and 8R.
[0015]
A marker motor 22 is connected to the marker switching arm 19, and the attitude of the marker switching arm 19 is controlled based on the driving thereof. The marker motor 22 selectively operates the marker switching arm 19 between the left and right swinging restriction position, the left marker swinging position, and the right marker swinging position, but as the planting section 3 moves down, the one marker 8L, By moving the marker switching arm 19 to the other swinging position after the swinging of the marker 8R, it is possible to cause the left and right markers 8L and 8R to swing out.
[0016]
An upper part (driving operation part) of the traveling machine body 1 includes a driver seat 23 on which an operator sits, a lift lever 24 provided on one side of the driver seat 23, a front operation panel 25 provided in front of the driver seat 23, and a front operation panel. A steering wheel 26 protruding from the panel 25, a hand operation lever (operation lever) 27 protruding to one side from a column portion of the steering wheel 26, a planting switch 28 provided on the front operation panel 25, and an auto marker stop switch (Automatic marker stop operation tool) 29 and the like. The lift lever 24, the hand control lever 27, the planting switch 28, and the auto marker stop switch 29 are electrically connected to the control unit 30, and have the following functions based on the control operation of the control unit 30 described later. I do.
[0017]
The lift lever 24 has four operation positions of “raise”, “fix”, “lower”, and “plant”. When the lift lever 24 is operated in each position, the lift cam 6 corresponds to the corresponding position. Is switched to. Thereby, the lifting operation of the planting section 3 by the lift lever 24 and the on / off operation of the planting clutch mechanism become possible.
[0018]
The hand operation lever 27 can be operated in the up-down direction and the front-rear direction, and based on the operation in the up-down direction, it is possible to move up and down the planting section 3 and enter / disengage the planting clutch mechanism. It is possible to set the start of the markers 8L and 8R based on the operation of the direction. However, the function of the hand control lever 27 is switched according to the on / off state of the planting switch 28. When the planting switch 28 is in the off state, only the raising and lowering operation of the planting section 3 is allowed. That is, when the hand operation lever 27 is operated upward, the planting section 3 is raised, and when the hand operating lever 27 is operated downward, the planting section 3 is lowered. In addition, when the hand operation lever 27 is operated downward while the planting section 3 is rising, or when the hand operation lever 27 is operated upward while the planting section 3 is descending, the raising / lowering operation of the planting section 3 is performed. Stopped.
[0019]
On the other hand, when the planting switch 28 is in the on state, the hand operating lever 27 enables the raising / lowering operation of the planting section 3, the on / off operation of the planting clutch mechanism, and the setting operation of swinging out the markers 8L and 8R. First, the raising / lowering operation of the planting section 3 by the hand operation lever 27 and the on / off operation of the planting clutch mechanism will be described. The operation pattern of the hand control lever 27 in this state corresponds to the above-described positions “lift”, “down”, and “planting” of the lift cam 6, and each time the hand control lever 27 is operated upward, the upward direction ( The sequence sequentially shifts from “planting” to “lower” to “up”, and conversely, every time the hand-operated lever 27 is operated downward, the sequence sequentially shifts in the downward direction (“up” → “lower” → “planting”). I do. In addition, when the hand operation lever 27 is operated in the reverse direction during the raising and lowering operation of the planting section 3, the state becomes the "fixed" state. Thereby, the raising / lowering operation of the planting section 3 by the hand operation lever 27 and the on / off operation of the planting clutch mechanism become possible.
[0020]
Next, an operation of setting the markers 8L and 8R to swing out by the hand operation lever 27 will be described. When the planting switch 28 is turned on, an auto marker function described later is turned on. In this state, every time the planting section 3 is raised, the markers 8L and 8R to be swung are automatically and alternately switched. Further, when the auto marker stop switch 29 is operated in this state, the auto marker function is turned off, and the automatic swing operation of the markers 8L and 8R is stopped. Therefore, the operation functions of the markers 8L and 8R required for the hand operation lever 27 include a marker swing setting function for setting the swing direction of the markers 8L and 8R, and a double swing operation function of swinging the left and right markers 8L and 8R. is there.
[0021]
The swing setting of the markers 8L and 8R is allowed only when the planting section 3 is at the highest position. When the hand control lever 27 is operated forward in this state, the left marker 8L is swung out at the time of the next lowering of the planting portion. Conversely, when the hand operating lever 27 is operated rearward, the right marker 8L is operated at the time of the next lowering of the planting portion. The marker 8L is dispensed. The operation of swinging out both the left and right markers 8L and 8R can be performed within a predetermined time after one of the markers 8L and 8R is swung out with the descending of the planting section 3. That is, after one of the left and right markers 8L and 8R has been swung out, by operating the hand operation lever 27 to the opposite side marker set position, the opposite side markers 8L and 8R are also swung out.
[0022]
Also, when the planting clutch mechanism is turned on and operated after the markers 8L and 8R on the left and right sides are swung out and before the next planting portion rises, the previous planting portion is lowered at the time of the next planting portion descending. If the planting clutch mechanism is not operated after the markers 8L and 8R on both the left and right sides have been swung out while the markers which have been swung out later are swung out at the time of descending, the planting clutch mechanism is not operated. At the next descent of the planting section, the markers 8L and 8R that have been previously drawn at the time of the previous descent of the planting section are drawn. Hereinafter, specific operations and operations of the markers 8L and 8R will be described with reference to FIG.
[0023]
In FIG. 12, planting is performed according to the following procedure.
1) First, the vehicle travels in the process (A) of turning and planting. At this time, planting is not performed, and a traveling reference line is drawn in the next step (B) (left marker is issued).
2) Planting starts from the next step (B). At this time, a traveling reference line is drawn in the surrounding planting process (A) and the next process (C) (left and right marker swing).
3) From the following steps (C and subsequent steps), a travel reference line is drawn only in the next step (left marker is drawn, and then left and right are alternately drawn).
[0024]
When planting is performed in the above procedure, the right marker 8R is swung out by the auto marker function at the start of the step (B). After the right marker 8R is swung out, the hand operation lever 27 is operated forward, and the left marker 8L is also swung out. When the planting section 3 is raised at the end of the step (B), the left and right markers 8L and 8R are stored, and in the next step (C), only the left marker 8L is automatically drawn out by the auto marker function. Will be.
[0025]
When planting is performed in the above procedure, the planting section 3 may be lowered at the end of the step (B) in which the markers 8L and 8R on both sides are swung to carry out the seedling transfer to the seedling mounting table. At this time, in the related art, it is erroneously recognized that the planting section is going up and down due to the turning of the body, and the auto marker function switches the swinging direction of the markers 8L and 8R, so that the planting section is started at the beginning of the next step (C). When the third marker is lowered, the direction in which the markers 8L and 8R are swung out is switched again, and the right marker 8R is swung out. However, in the present embodiment, as described above, the planting section without the operation of the planting clutch mechanism is performed. During the elevating operation, the switching of the swing direction is not performed by the auto marker function, so that the markers 8L and 8R in the appropriate directions can be swing.
[0026]
Next, the configuration and operation of the control unit 30 will be described. The control unit 30 is configured by using a microcomputer. On the input side, in addition to the planting switch 28 and the auto marker stop switch 29 described above, a lift angle sensor 31 for detecting the elevation position of the planting unit 3 and the lift cam 6 are provided. , A lift lever sensor 33 for detecting the operation position of the lift lever 24, and four switches 34 to 37 for detecting up, down, front and rear operations of the hand operation lever 27, and the like. The output side of the control unit 30 is connected to the lift cam motor 7, the marker motor 22, and the like. Then, the control unit 30 performs hydraulic pressure raising / lowering control, marker mode control, and the like according to a program stored in the ROM in advance. Hereinafter, control procedures of the hydraulic pressure raising / lowering control and the marker mode control will be described with reference to flowcharts. However, the hydraulic pressure raising / lowering control is for realizing the planting portion raising / lowering operation and the planting clutch operation by the above-mentioned hand operation lever 27, and uses the same control method as the conventional one. The description is omitted.
[0027]
In the marker mode control, three flags “auto marker flag”, “marker mode (flag)”, “planting clutch flag”, and one timer “double drop operation timer” are used. The auto marker flag is used to determine ON / OFF of the auto marker function, and the marker mode flag is used to determine the direction in which the marker is provided. The planting clutch flag is used to determine a planting clutch operation, and ON / OFF is set by an external routine. Further, the double drop operation timer is a subtraction timer that determines the both-side swing operation time after the lowering of the planting portion.
[0028]
In the marker mode control, first, ON / OFF of the planting switch 28 is determined, and if the result of the determination is ON, it is determined whether or not the planting portion is in the descending operation state. If the determination result is NO, after setting the double drop operation timer, it is determined whether or not the planting section 3 is at the highest position. When the determination result is YES, the normal marker operation by the hand operation lever 27 is performed. Tolerate. In this state, the state of the auto marker flag is determined (ON at the initial stage). When the determination result is automatic, the ON / OFF of the planting clutch flag is determined. When the planting clutch flag is ON, it is determined that the planting portion has been moved up and down with the planting clutch operation, and the direction of the marker mode flag is reversed. However, when the marker mode flag is in the reset state (initial state), the marker swing direction is set to the right. As described above, by determining whether or not the planting clutch is operated when reversing the marker swinging direction, the problem that the marker swinging direction is uselessly switched at the time of ascending and descending the implanting section without the implanting clutch operation is solved. .
[0029]
After that, the planting clutch flag is reset, and the front / rear operation of the hand operation lever 27 is determined. When it is determined that an operation has been performed, the marker mode flag is set to the marker swing direction according to the operation direction, and the auto marker flag is turned ON. That is, when the hand setting operation is performed with the hand operation lever 27 while the auto marker function is OFF, the auto marker function is switched ON. Thereafter, the operation of the auto marker stop switch 29 is determined, and if it is determined that the operation is performed, the auto marker flag is inverted. That is, since the auto marker function is turned off by the auto marker stop switch 29 without being operated by the hand operation lever 27, the marker operation by the hand operation lever 27 is simplified.
[0030]
On the other hand, when the planting switch 28 is ON and the planting section 3 is lowered, the timer value of the double dropping operation timer is referred to. When the timer value is other than 0 (within a predetermined time after the lowering), the hand operation lever 27 is turned on. Judge the operation of. When the hand operation lever 27 is operated to swing out the markers 8L and 8R opposite to the markers 8L and 8R swinged out by the auto marker function, the marker mode flag is set to swing out the markers 8L and 8R. Is set to the state of swinging out on both sides.
[0031]
In the apparatus constructed as described above, a traveling machine body 1 having a driving operation unit, a planting section 3 connected to a rear portion of the traveling machine body 1 so as to be able to move up and down, and a lift cylinder 4 for moving the planting section 3 up and down. And a planting clutch for turning on / off the power supply to the planting unit 3, and a pair of left and right that are stored as the planting unit 3 rises and are selectively swung out as the planting unit descends. And an auto marker function (control section 30) for alternately oscillating left and right markers 8L and 8R in accordance with the raising and lowering operation of the planting section 3. Is configured to swing out the other marker 8L, 8R in accordance with a predetermined operation after swinging out one of the markers 8L, 8R. The planting clutch enters and moves until the attachment rises. At the time of the next lowering of the planting section, the marker 8L, 8R which has been oscillated later at the time of the previous lowering of the planting section is thrown out at the next planting section descent, and the next time the marker 8L, 8R on both left and right sides is thrown out. When the planting clutch is not engaged until the planting portion is moved up, the markers 8L and 8R that have been previously sprayed out at the time of the previous planting portion lowering are rubbed out at the time of the next planting portion lowering. It is configured as follows. In other words, after the markers 8L and 8R on both the left and right sides are swung out, the next marker swinging direction is determined based on whether or not the planting clutch has been engaged between the time when the planting portion is raised next time. In addition, it is possible to avoid unnecessary switching of the marker 8L and 8R swing directions by the auto marker function, and as a result, it is not necessary to reset the marker swing direction.
[Brief description of the drawings]
FIG. 1 is a side view of a riding rice transplanter.
FIG. 2 is a plan view of the riding rice transplanter.
FIG. 3 is a side view showing a lift cam.
FIG. 4 is a plan view showing a marker.
FIG. 5 is a side view showing a marker switching unit.
FIG. 6 is a plan view showing a marker switching unit.
FIG. 7 is a plan view of a main part of a front operation panel unit.
FIGS. 8A and 8B are explanatory diagrams showing operation patterns of a hand operation lever.
FIG. 9 is a block diagram illustrating input and output of a control unit.
FIG. 10 is a flowchart of hydraulic pressure raising / lowering control.
FIG. 11 is a flowchart of marker mode control.
FIG. 12 is an explanatory diagram illustrating an example of a planting operation.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 traveling machine 3 planting unit 4 lift cylinder 8L marker 8R marker 22 marker motor 23 driver's seat 24 lift lever 27 hand operating lever 28 planting switch 29 auto marker stop switch 30 control unit

Claims (1)

A traveling body having a driving operation unit, a planting portion connected to a rear portion of the traveling body so as to be able to move up and down, an actuator for elevating the planting portion, and a power supply to the planting portion. A pair of left and right markers that are disengaged, a pair of left and right markers that are stored as the planting section rises and are selectively swung out as the planting section descends, according to the raising and lowering operation of the planting section. And an auto-marker means for alternately oscillating the left and right markers,
After the auto-marker means oscillates one marker, the other marker is also oscillated according to a predetermined operation,
After the markers on both the left and right sides are swung out and before the next planting section rises, when the planting clutch is engaged and operated, at the time of the next planting section lowering, the rearward at the time of the previous planting section lowering. While shaking out the marker drawn from
After the markers on the left and right sides have been swung out, before the next planting section rises, if the planting clutch is not engaged and operated, at the time of the next planting section descending, at the time of the previous planting section descending An implanting machine characterized by ejecting a marker which has been ejected first.

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