JP2005176694A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter enabling automatically making the lift control of a planting part even if the startup operation of turning a key switch on is made again after completely halting the engine or the like of the riding-type rice transplanter with the key switch turned off in such a condition that a float contacts with a farm( a condition that the planting part is lowered ). <P>SOLUTION: The rice transplanter includes the planting part 4 for planting seedlings in a field and the float 34 for detecting farm unevenness and makes a lift control of the planting part based on the detection result of the float. In this rice transplanter, the lift control of the planting part is made when the float is in contact with the field surface when a startup operation is made by the key switch 65. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention comprises a planting part for planting seedlings in a farm field at the rear part of a traveling machine body, and a float provided with a detecting means for detecting a ground height of a planting claw support part, and detecting the float It is related with the technology of the rice transplanter which raises / lowers the said planting part based on a result.

Conventionally, at the rear of the traveling machine body, a planting part for planting seedlings in the field via the lifting link mechanism, and a float equipped with a detection means for detecting the ground height of the planting claw support part, There is a rice transplanter that controls the raising and lowering of the planting part based on the detection result of the float.
Specifically, such a rice transplanter detects changes in the vertical position and angle of the float provided at the bottom of the rice transplanter, and operates the lifting link according to the detection result to move the planting unit up and down. By doing so, the planting depth was controlled to be constant so that the seedling planting work could be performed appropriately.
Examples of such rice transplanters include those shown in Patent Documents 1 and 2 below.

Japanese Patent No. 3335977 Japanese Patent No. 3092465

However, when the above-mentioned conventional rice transplanter is in the process of planting seedlings by grounding the float against the field scene, if the key switch for starting the rice transplanter is turned OFF to stop the rice transplanter Even if the key switch is turned ON again (start input) and the rice transplanter is started, there is a problem that the raising / lowering control of the planting part is not performed.
In general, turning the key switch off with the planting part lowered is rarely at the end of work or storage, and the lever and switch for raising and lowering the planting part are in the neutral (stopped) position. This is because it is assumed that the key switch is turned off at a certain time.
That is, conventionally, the state of the planting part when the key switch is turned on is not detected, and it is assumed that the lever and switch for raising and lowering the planting part are in the neutral (stopped) position. Even when the key switch was turned on again, the lifting control was not automatically started.
Therefore, while the worker is planting seedlings using the rice transplanter, a failure occurs in the traveling or planting part, etc., and the key switch is turned off while the planting part is lowered to the field scene side. When there is a time that must be set, there is a problem that even if the key switch is subsequently turned on, the subsequent planting operation cannot be performed immediately.
Moreover, when a rice transplanter is made to travel with the planting part lowered, the planting part is not controlled to be lifted and, therefore, there is a problem that mud pushing or floating seedlings occur due to the float.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in Claim 1, the planting part for planting a seedling in a farm field,
A float provided with a detecting means for detecting the ground height of the planting claw support portion,
In the rice transplanter that controls the raising and lowering of the planting part based on the detection result of the detection means,
When the start operation is performed by the key switch, when the float is in contact with the field scene, the planting unit is configured to perform up-and-down control of the planting unit.

  In claim 2, when the start operation is performed by the key switch, when the float touches the field scene and the rice transplanter is set in the working traveling state, the planting unit is lifted and lowered. It is configured as a rice transplanter that performs control.

  According to a third aspect of the present invention, when the start operation is performed by the key switch, the float comes into contact with the field scene, the rice transplanter is set to the working traveling state, and the lifting lever is lowered to plant When the clutch is in the “ON” position, it is configured as a rice transplanter that performs the lifting control of the planting part.

  As effects of the present invention, the following effects can be obtained.

According to the configuration of claim 1, after the key switch is turned off and the engine of the riding rice transplanter is completely stopped with the float in contact with the field (with the planting part lowered), the key switch is again turned on. Even if the start operation to turn on is performed, it is possible to automatically perform the lifting control of the planting part.
Therefore, because the lift control is not performed with the float in contact with the field like a conventional rice transplanter, the float does mud push in the field, or the planting is caused by shallow planting and floating seedlings. Can be eliminated.

According to the configuration of claim 2, by further determining whether or not the riding rice transplanter is traveling, avoiding a situation where the planting part is controlled to be lifted and lowered simply by touching the float to the field, It is possible to reduce the burden on the control unit.
Therefore, when the rice transplanter starts to run with the planting part lowered and the seedling planting operation is resumed, it is possible to solve the problem that the float mud pushes the field.

According to the configuration of claim 3, by further adding the determination of whether or not the riding rice transplanter is traveling and the determination of the state of the planting clutch, the planting unit is lifted and lowered simply by the float being in contact with the field. It is possible to avoid the situation of controlling and reduce the burden on the control unit.
Therefore, when the rice transplanter starts to run with the planting part lowered and the seedling planting operation is resumed, it is possible to solve the problem that the float mud pushes the field.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following best mode for carrying out the present invention is an example embodying the present invention, and is not intended to limit the technical scope of the present invention.
FIG. 1 is a schematic configuration diagram showing an appearance of a riding rice transplanter according to an embodiment of the present invention, FIG. 2 is a side view of the riding rice transplanter shown in FIG. 1, and FIG. 3 is a main part of an operation system in the vicinity of the steering handle 14. 4 is a side view of the schematic configuration diagram of FIG. 3, FIG. 5 is an example of a case where a lift switch is provided on the side of the steering handle 14, and FIG. FIG. 7 is a flowchart showing the outline of the lifting control of the planting unit 4 when the key SW 65 is operated, FIG. 8 is a flowchart showing the outline of the control of the riding rice transplanter, and FIG. 9 is the control of the riding rice transplanter. It is a flowchart which shows an outline.

First, the whole structure of the rice transplanter according to the best mode for carrying out the present invention will be described with reference to FIGS. 1 and 2.
The rice transplanter of the present embodiment is an 8-row riding rice transplanter, and the planting part 4 is attached to the rear part of the traveling machine body (traveling part) 1 via the lifting link mechanism 27.
In the traveling unit 1, the engine 2 is mounted above the front part of the body frame 3, the front wheel 6 is supported at the front lower part via the front axle case 7a, and the rear wheel 8 is provided at the rear part via the rear axle case 7. I support it.
The engine 2 is covered with a bonnet 9, preliminary seedling platforms 10 and 10 are disposed on both sides of the bonnet 9, and a steering handle 14 is disposed on the dashboard 5 at the rear of the bonnet 9.
Both sides of the bonnet 9 and the rear body frame 3 are covered with a body cover 12.
A seat 13 is disposed at a rear position of the steering handle 14, and both sides of the bonnet 9 and the front portion of the seat 13, both right and left sides of the seat 13, and the rear of the seat 13 are steps.
Further, an eight-way fertilizer applicator 33 is disposed behind the seat 13.

The planting part 4 provided at the rear part of the traveling part 1 is attached to the seedling stage 16, rotary cases 22, 22... Provided at the rear part of the planting transmission case serving as a planting claw support part, and the rotary case 22. Planted claws, a center float 34, a side float 35, and the like.
The seedling stage 16 is disposed in front and rear and low, and the lower part of the seedling stage 16 is supported by the lower guide rail 18 and the upper part of the front surface by the upper guide rail 19 so as to be slidable in the left-right direction.
The lower guide rail 18 and the upper guide rail 19 are supported by a planting center case 20 via a planting frame 23 and the like.
Then, a connecting pipe (not shown) is projected from the planting center case 20 to the left and right sides, a transmission case (not shown) is fixed, the transmission case is projected rearward in parallel, .. Are arranged on both sides of the rear part of the transmission case, and planting claws are provided on the rotary cases 22.
Since one set of the rotary cases 22, 22... Is provided for one seedling stand 16, eight rotary cases 22 are provided in the case of the above-mentioned eight-rice rice transplanter.

  Further, the elevating link mechanism 27 is connected to the front portion of the planting center case 20 via a rolling fulcrum shaft, and the elevating link mechanism 27 includes a top link 25, a lower link 26, and the like. The planting part 4 can be moved up and down by a lifting cylinder (not shown; an example of a lifting drive mechanism) composed of a hydraulic cylinder serving as an actuator.

A center float 34 and a side float 35 are supported via a link mechanism below the planting center case 20 and the planting transmission case connected to the rear part of the elevating link mechanism 27, and the front part of the center float 34 and the planting are planted. An angle sensor 80 is disposed on the support frame of the center case 20 or the planting transmission case as an example of a detecting means for detecting a change in the angle of the float, that is, a height of the planting claw support unit with respect to the field. For example, a potentiometer or a rotary encoder is used.
The angle sensor 80 is connected to a control unit, and the planting unit 4 is controlled to move up and down in accordance with a change in the float angle, as will be described later.
Further, markers 40 and 40 are disposed on both the left and right sides of the connecting pipe.
Since the rice transplanter is configured as described above, the seedling mounting table 16 is reciprocated to the left and right as the vehicle travels forward, and the planting claws are driven in synchronism with this reciprocation in each strip. This makes it possible to cut out seedlings of minutes and continuously plant them.

Although not clearly shown in FIG. 1 and FIG. 2 because of the scale of the drawings, an operating system such as a lever and a switch as shown in FIG. 3 is provided in the vicinity of the dashboard 5 in detail.
Note that FIG. 3 shows a state in which main parts related to the operation system in the vicinity including the dashboard 5 in FIGS. 1 and 2 are extracted, and drawing of parts not related to the operation system is omitted. .
On the rear side of the dashboard 5 (the seat 13 side), a steering handle 14 is provided at the center in the left-right direction.
That is, the dashboard 5 and the steering handle 14 are provided on the front side of the seat 13, and electrical operating means and levers related to the planting work of the planting unit 4 are arranged in the vicinity of the steering handle 14. Has been.
As specific examples of the electric operation means, a planting depth setting SW 61, a field hardness setting SW 62, a work selection SW 63, and a seedling joint SW 64 are arranged (here, “SW” means “switch”). The same shall apply hereinafter.
As the levers, an operation region 90b such as a main transmission lever 94 is provided in the vicinity of the left side of the dashboard 5 with respect to the steering handle 14, and on the other hand, the dashboard 5 In the vicinity of the right side, an operation area 90a such as a cruise control lever 92, an accelerator lever 93, and an elevating lever 91 for manually raising and lowering the planting part 4 by an operator is provided.
As shown in FIG. 3, the operation areas 90a and 90b are provided with guide grooves 91a, 92a, 93a, and 94a that define the swing ranges and holding positions of the levers.
Further, the operation areas 90a and 90b may be made of a member separated from the dashboard 5 as shown in FIG. 3, or may be formed integrally with the dashboard 5. Good.
A key SW 65 for inputting the start of the engine 2 is provided on the seat 13 side below the dashboard 5.
The key SW 65 also has a function of turning on a power source for supplying power to a cell motor for starting the engine 2 and a control unit.

The lifting lever 91 in the operation area 90a will be described with reference to FIG.
As described above, the elevating lever 91 is for manually elevating the planting unit 4 by being directly operated manually by an operator, and is provided conventionally.
For example, as shown in FIG. 4A, the elevating lever 91 is fixed to a shaft 72a whose swing base is pivotally supported in the operation region 90a, and an arm 71a is fixed to the shaft 72a. ing.
Similarly, further below the shaft 72a and the arm 71a, a shaft 72b that is pivotally supported in parallel with the shaft 72a inside the operation region 90a and an arm 71b fixed to the shaft 72b are provided. A link 74 projects from the shaft 72b.
Further, the end portions of the link 73 are pivotally connected to the end portions of the two arms 71a and 71b, respectively, and the arms 71a and 71b are arranged substantially parallel to form a parallel link.
A rotary SW 70 is provided at an intermediate position in the vertical direction between the arm 71a and the arm 71b.
A substantially U-shaped U-shaped link 70 a is fixed to the rotary shaft of the rotary SW 70.
The end of the link 74 is engaged with the U groove of the U-shaped link 70a, and the end of the link 74 is slidable within the groove of the U-shaped link 70a. .
Since the link 74 slides on the inner surface side of the U-shaped link 70a, the position of the U-shaped link 70a (that is, the angle with respect to the rotary axis) changes, so that the rotary SW 70 rotates. The shaft is configured to rotate.

In the configuration as described above, for example, the state of the elevating lever 91 shown in FIG. 4A shows a state pulled to the foremost side (that is, a state pulled to the rear side).
In this state, the position of the U-shaped link 70a fixed to the rotary shaft of the rotary SW 70 is assumed to be the position shown in FIG.
The rotary SW 70 has, for example, four contacts as shown in FIG. 4B, and the contacts corresponding to the four contacts are connected to the control unit 100 (FIG. 6). “Up”, “neutral”, “down”, and “planting” are set in advance at the position of the U-shaped link 70 a, and each indicates an ascending / descending operation of the planting unit 4.
Moreover, since the control part 100 is connected with the raising / lowering cylinder drive part 200, it can drive the raising / lowering (hydraulic pressure) cylinder and can raise / lower the planting part 4 to a desired position.
That is, when the U-shaped link 70a is in the “up” position, the planting portion 4 is raised. When the U-shaped link 70a is in the “neutral” position, the planting portion 4 does not operate and remains in a neutral state. The planting part 4 descends when it is in the position of "planting", and when it is in the "planting" position, the planting clutch of the planting part 4 becomes "ON" and the planting claws are driven to plant seedlings. To start.
Since the rotary SW 70 is set in advance as described above, in the state shown in FIG. 4A, consider the case where the lifting lever 91 is pushed in the direction of the thick arrow in FIG. 4A (the forward direction of the riding rice transplanter). .
Note that the thick arrow direction of each part in FIG. 4A indicates the operation direction corresponding to the operation of the lifting lever 91 in the thick arrow direction.
In this case, the arm 71a fixed to the shaft 72a that is the swing base of the lifting lever 91 rotates (in the direction of the thick arrow), so that the link 73 moves (in the direction of the thick arrow), so the arm 71b and the shaft 72b Rotates (in the direction of the thick arrow).
At this time, the link 74 fixed to the shaft 72b slides on the inner surface side (in the groove) of the U-shaped link 70a, so that the rotary shaft of the rotary SW 70 rotates in the direction of the thick arrow.
Therefore, since the position of the U-shaped link 70a moves in the order of “up” → “neutral” → “down” → “planting”, the manual control of the planting unit 4 is also switched in this order.
Of course, by operating the lifting lever 91 in the reverse direction, manual control of the planting unit 4 can be switched in the order of “planting” → “down” → “neutral” → “up”.

In the above description, the case where the planting unit 4 is manually raised and lowered by the elevating lever has been described, but the case where the operation SW for elevating is provided instead of the elevating lever will be described with reference to FIG.
In this case, as shown in FIG. 5, an operation SW 50 is provided on the cover portion of the steering handle 14.
This operation SW50 is provided with a left marker SW51, a right marker SW52, a planting part lowering SW53, a stop SW54, a planting part raising SW55, and a seedling joint SW64a.
The seedling joint SW 64a functions in the same manner as the seedling joint SW 64 described later.
The markers SW51 and 52 are switches for lowering the markers 40 and 40 provided on both sides of the riding rice transplanter to bring them into a line drawing state. The marker SW51 locks the left marker 40 at the ascending rotation position. The switch for releasing the lock mechanism, and the marker SW 52 is a switch for releasing the right marker 40 in the same manner as described above.
The planting part lowering SW 53 is a switch for lowering the planting part 4, and the planting part raising SW 55 is a switch for raising the planting part 4.
The stop SW 54 is a switch for stopping the lifting operation of the planting unit 4.
That is, it is a switch for performing the same operation as the “neutral” described with reference to FIG.
Therefore, even if the planting unit 4 is automatically raised, the operator can easily stop the raising at an arbitrary height by operating the stop SW 54 provided in the operation SW 50. Further, it is possible to easily stop the planting unit 4 at a height at which the seedling joining operation or the like can be easily performed.
Even when the vehicle is descending, it can be stopped halfway by operating the stop SW 54.
The seedling SW 64a is an example of an operating means for stopping the ascent or descent of the planting unit 4 at a predetermined height.
Note that the determined height is lower than the highest position and higher than the lowest position, and is lower than the height at which the marker 40 is turned up and locked.
Thus, even if the operation SW 50 for performing the raising / lowering operation of the planting unit 4 is provided, the same operation as in the case of the rotary SW 70 can be performed.

Here, the planting depth setting SW 61, the field hardness setting SW 62, the work selection SW 63, and the seedling joint SW 64 described above will be described.
The planting depth setting SW 61 is a volume type switch for setting the planting depth when a seedling is planted in the field.
The volume type switch has a method of adjusting by rotating the switch as shown in FIGS. 3 and 4, and is also called “dial type”. Therefore, here, the description will be made assuming that the volume type includes the meaning of the dial type.
The field hardness setting SW 62 is a volume type switch for setting and inputting the field hardness obtained by the operator.
The work selection SW 63 is a volume type switch for setting the riding rice transplanter so that the work corresponding to the state of the field can be performed by inputting the state of the field. Specific examples of the field situation include “standard”, “deep water”, and “headland”.
“Standard” means a standard field that can be used without special control when the riding rice transplanter performs planting work. (Standard mode)
“Deep water” means that the amount of water (depth) in the field is larger than that of the standard. (Deep water mode)
“Headland” means that when the amount of water (depth) in the field is small compared to the above standard, or the field condition is poor compared to the central part of the field (there is a lot of unevenness, for example, turning at the field edge) This means a case where the farm scene (rice field) has many irregularities). (Headland mode)
In addition, the deep mud mode in which mud pushing occurs frequently and the dust mode in which a lot of dredging and foreign substances are floating are conceivable. The target values of planting depth and planting sensitivity according to the situation and state of the field. Can be changed by the work selection SW 63.
When the planting part 4 rises, the seedling joint SW 64 does not raise the planting part 4 to the top so that the seedling can be easily carried out, and the elevation is set at a predetermined height for seedling joint work. This is a switch for automatically stopping the operation, and is a push-type switch for detecting a press by an operator.
In this way, by setting only the switch of the seedling SW 64 as a push type different from that of other switches, it is possible to alert the operator that the seedling SW 64 is the seedling SW 64, and the seedling can be touched with one touch. Since the function activated by the relay SW 64 can be started, the handling is easy and convenient.
Further, the seedling SW 64 may be provided with a lamp, a light emitting diode, or the like, for example, when the lamp or the light emitting diode shines when operated (pressed) by a user or the like. You may make it notify a user that the planting part 4 is in a stop state with the said predetermined height.

<Control system>
For example, as shown in FIG. 6, the control unit 100 that controls the entire riding rice transplanter includes an operation SW 50 or a rotary SW 70, a planting depth setting SW 61, a field hardness setting SW 62, a work selection SW 63, a seedling SW 64, a key SW65, various sensors 300, an angle sensor 80 for detecting an angle change of the center float 34, the side float 35, and the like, a lift cylinder driving unit 200 for driving a lift cylinder that lifts and lowers the planting unit 4, a lamp (monitor lamp) 110, etc. Is connected.
The control unit 100 controls the entire riding rice transplanter based on information acquired from the above-described units (switches, sensors, etc.) and the contents set and stored in advance in the control unit 100.
In addition, since the control unit 100 only needs to have a function of controlling the entire riding rice transplanter as described above, the control unit 100 may be provided at any place on the riding rice transplanter as long as the function is not limited. .

<Elevation control of the planting part 4 by operation of the key switch 65 (key SW65)>
Here, for example, the key switch 65 (hereinafter referred to as the key SW 65) is pressed while the planting unit 4 is lowered and the float such as the center float 34 and the side float 35 is brought into contact with the farm field to perform the planting operation. With reference to the flowchart of FIG. 7, the lifting control of the planting unit 4 when the key SW 65 is turned on after turning off and stopping the riding rice transplanter will be described.
First, the engine 2 is started by a key operator being inserted into the key SW 65 by a worker who performs work using the riding rice transplanter and performing a start operation for starting the cell motor of the engine 2 (S110).
Note that the engine can be started only when the main transmission lever is shifted to the seeding position.
When the key SW 65 is ON, the control unit 100 detects whether the planting unit 4 is in an up-and-down state based on whether a float such as the center float 34 or the side float 35 is in contact with the field. Judgment is made based on the detection result of 80 or the like (S120).
If it is determined in step S120 that the float is in contact with the field, the process proceeds to step S160. On the other hand, if it is determined that the float is not in contact with the field, the process is step. The process proceeds to S130.

First, the case where the process proceeds to step S130 will be described.
The control unit 100 determines whether or not the elevating lever 91 is in the above-described “neutral” position (in the case of the operation SW50, whether or not the stop SW 54 is pressed) (S130).
If it is determined in step S130 that the elevating lever 91 is in the “neutral” position, the control unit 100 determines that the elevating operation of the planting unit 4 is possible, and the operator performs the operation of the planting unit 4. The raising / lowering operation is performed (S140).
If it is determined in step S130 that the lift lever 91 is not in the “neutral” position, the process proceeds to step S120.
Note that the ascending position is at that position only during operation, and when it is released, it returns to the neutral position.
Next, when the descent operation is performed on the planting unit 4 by the process of step S140, the control unit 100 determines again whether or not the float is in contact with the field (S150).
If it is determined in step S150 that the float is not in contact with the field, the determination in step S150 is repeated to determine whether the float is in contact with the field.
On the other hand, if it is determined in step S150 that the float is in contact with the field, the process proceeds to step S160.
If a process transfers to step S160, the control part 100 will detect the angle of the float which touches a field from the angle sensor 80, and will perform raising / lowering control of the planting part 4 based on the detection result.
Therefore, with the float in contact with the field (with the planting unit 4 lowered), the key SW 65 is turned off, and the engine 2 and the like of the riding rice transplanter are completely stopped, and then the key SW 65 is turned on again. Even if the operation is performed, it is possible to automatically perform the lifting control of the planting unit 4.
Therefore, since the lift control is not performed in a state where the float is in contact with the field like the conventional rice transplanter, it is possible to solve the problem that the float mud pushes the field.

Further, before performing the lifting control in the process of step S160, the control unit 100 may further add a process of determining whether or not the riding rice transplanter is set in a planting (working) traveling state.
In this case, if the main shift lever is shifted to the work travel position, the elevating lever is lowered, and the gear shift is set to the planting clutch “ON” position, the riding rice transplanter sets the planting travel state. The process proceeds to step S160.
On the other hand, when it is determined that the riding rice transplanter is not set to the planting traveling state, the process may move to step S120.
In this way, by further determining whether or not the riding rice transplanter is running, it is possible to avoid a situation in which the planting unit 4 is controlled to move up and down simply by the float being in contact with the field. The burden of 100 can be reduced.
In addition, turning off the key SW while in the planting traveling state means that a problem occurred during the planting operation and stopped, so the state of the lifting control immediately before stopping is stored in the memory. Alternatively, when the key SW is turned on in the planting traveling state, the previous lifting state may be read from the memory and the planting lifting control may be performed in substantially the same state as before the stop.
Thereby, even if the planting operation is interrupted, it is possible to continuously execute the similar planting lifting control.

<General lifting control of the planting part 4>
Next, an example of the raising / lowering control of the planting part 4 of a riding rice transplanter is demonstrated using the flowchart of FIG. 8, FIG.
In addition, the control subject in the control described below may be the control unit 100 that controls the overall control of the riding rice transplanter, or a dedicated control unit that specializes and controls only the planting unit 4. If provided separately, the dedicated control unit may be used.

Here, it is assumed that the control unit 100 starts the control from the state where the raising / lowering control of the planting unit 4 is not performed after the processing of the start control (step S90) of the riding rice transplanter.
In step S20, the control unit 100 sets the planting clutch in a neutral state in which the planting clutch 4 is not engaged and the planting unit 4 is not lifted or lowered (S20).
That is, this step S20 can be said to be a neutral mode in which the raising / lowering operation of the planting unit 4 is stopped.
In the process of step S20, for example, when the planting unit lowering SW 53 is pressed, the process proceeds to step S30, and when the planting unit ascending SW 55 is operated, the process proceeds to step S10.

In the process of step S10, the control unit 100 raises the planting unit 4 while disengaging the planting clutch (S10).
That is, this step S10 can be said to be an ascending mode for raising the planting part 4.
Moreover, you may call an operator's attention by providing the display part etc. which are provided in a riding rice transplanter in the display lamp which displays that it is the said raise mode.
In the process of step S10, the planting unit 4 has reached a predetermined height in “when the stop SW 54 or other switch is pressed” or “when the seedling joint SW 64 is pressed”. If it is determined, the process proceeds to step S20 and becomes neutral (that is, stops).
On the other hand, in the process of step S10, when the planting unit lowering SW 53 is pressed, the process proceeds to step S30.

In the process of step S30, when the planting unit 4 performs the lowering control and the planting clutch is in the disengaged state, the control unit 100 sets the planting clutch in the on state by pressing the planting unit lowering SW53. On the other hand, when the planting part 4 is controlled to be lowered and the planting clutch is in the engaged state, the planting clutch is brought into the disengaged state by pressing the stop SW 54 (S30).
That is, this step S30 can be said to be a lowering mode for lowering the planting part 4.
When the planting part 4 is controlled to be lowered and the planting clutch is in the disengaged state, if the stop SW 54 is pressed, the process proceeds to step S20. On the other hand, if the planting part raising SW 55 is pressed, the process is performed. When the process proceeds to step S10 and no operation is performed (via the processing path (1)), the process proceeds to step S40 (see FIG. 9).
Furthermore, when the planting part 4 is controlled to be lowered and the planting clutch is in the engaged state, if the planting part raising SW 55 is pressed, the process proceeds to step S10, and if no operation is performed (processing path) Go to step S40 (see FIG. 9) (via (2)).

In the process of step S40, the control unit 100 performs neutral control of the planting unit 4, and when the planting clutch is in the disengaged state, the planting unit lowering SW 53 is pressed to turn on the planting clutch, On the other hand, when the neutral control of the planting part 4 is performed and the planting clutch is in the engaged state, the planting clutch is brought into the disengaged state by pressing the stop SW 54 (S40).
That is, this step S40 can be said to be a ground contact stop mode in which the planting unit 4 is lowered to the field and stopped by the process of step S30.
When the planting unit 4 is neutrally controlled and the planting clutch is in the disengaged state, when the planting unit ascent SW 55 is pressed, the process proceeds to step S10 (via the processing path (3)). If no operation is performed, the process proceeds to step S50.
Furthermore, when the neutralization control of the planting unit 4 is performed and the planting clutch is in the engaged state, when the planting unit raising SW 55 is pressed, the process proceeds to step S10 (via the processing path (3)), If no operation is performed, the process proceeds to step S50.
In addition, when nothing is operated in the above (from step S40 to step S50), the vehicle speed of the riding rice transplanter is greater than 0, and the ground contact of the center float 34 is maintained for a certain time.
That is, the riding rice transplanter moves while planting seedlings in the field.

In the process of step S50, the control unit 100 controls the raising and lowering of the planting unit 4 and, when the planting clutch is in a disengaged state, the planting clutch is lowered by pressing the planting unit lowering SW 53, On the other hand, when the raising / lowering control of the planting unit 4 is performed and the planting clutch is in the engaged state, the planting clutch is brought into the disengaged state by pressing the stop SW 54 (S50).
That is, in this step S50, the height of the planting part 4 that is in contact with the field by the process of step S40 is adjusted to the height of the field (change in the unevenness of the field) that changes as the riding rice transplanter moves. It can be said that it is a lift control mode for performing lift control.
Further, when the planting unit 4 is controlled to be lifted and the planting clutch is in the disengaged state, if the planting unit ascent SW 55 is pressed, the process proceeds to step S10 (via the processing path (3)).
Furthermore, when the planting unit 4 is controlled to move up and down and the planting clutch is in the engaged state, when the planting unit ascending SW 55 is pressed, the process proceeds to step S10 (via the processing path (3)).
The passenger rice transplanter can perform the rice transplanting work efficiently by performing the series of processes as described above during normal control.

Moreover, in the above-mentioned, if stop SW54 is operated by step S10 (rise mode), a process will transfer to step S20 (neutral mode) which stops operation | movement of the planting part 4. FIG.
Thereafter, when the planting unit lowering SW 53 is operated again, the process proceeds to step S30 (lowering mode) and enters the grounding stop mode of step S40 through the processing path (1).
That is, even if the planting unit 4 is automatically raised, the planting unit 4 can be easily set to the grounding stop mode only by operating the elevating lever 91 twice.

In addition, when the stop SW 54 is operated and the planting clutch is in the disengaged state in step S10 (up mode), for example, when the planting unit lowering SW 53 is operated again, the planting unit 4 is automatically operated. You may perform control which grounds to a farm field, makes a planting clutch into an engagement state, and prohibits back interlocking (the planting part 4 is raised at the time of reverse travel).
Thereby, for example, at the time of seedling succession of a riding rice transplanter, when turning a headland, or when moving backward at a minute distance, the planting unit 4 can be stopped without being raised to the top, and then quickly brought into contact with the field again. It becomes possible.
Therefore, the mobility of the riding rice transplanter can be increased and the working efficiency can be increased.

The schematic block diagram which shows the external appearance of the riding rice transplanter which concerns on embodiment of this invention. The side view of the riding rice transplanter shown in FIG. The schematic block diagram which extracted the principal part of the operation system of the steering handle 14 vicinity. The side view of the schematic block diagram of FIG. FIG. 4 is an example of a case where a lift switch is provided on the side surface of the steering handle 14. The block diagram regarding the raising / lowering control of the planting part 4. FIG. The flowchart which showed the outline of the raising / lowering control of the planting part 4 at the time of key SW65 operation. The flowchart which shows the outline of control of a riding rice transplanter. The flowchart which shows the outline of control of a riding rice transplanter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling part 2 Engine 3 Body frame 4 Planting part 5 Dashboard 14 Steering handle 34 Center float 35 Side float 64 Seedling SW
65 Key SW
70 Rotary SW
91 Lifting lever

Claims (3)

A planting part for planting seedlings in the field;
A float provided with a detecting means for detecting the ground height of the planting claw support portion,
In the rice transplanter that controls the raising and lowering of the planting part based on the detection result of the detection means,
A rice transplanter characterized in that, when a start operation is performed by a key switch, when the float is in contact with a field scene, the planting part is controlled to be lifted and lowered.   When the start operation is performed by a key switch, when the float is in contact with a field scene and the rice transplanter is set in a working traveling state, the planting unit is controlled to be lifted and lowered. The rice transplanter described. When the start operation is performed by the key switch, the float touches the field scene, the rice transplanter is set to the working traveling state, and the raising / lowering lever is lowered, so that the planting clutch is in the “ON” position. The rice transplanter according to claim 1, wherein when it is located, the raising and lowering control of the planting part is performed.

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