JP2002247902A - Device for operating marker in rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely prevent a line marker from being unexpectedly changed to the operation position on a road or in a barn. SOLUTION: A rice-transplanting device 2 is connected to a self-propelled machine 1 so as to be freely lifted and lowered, and a lifting and lowering means for driving the rice-transplanting device 2 so as to be lifted and lowered is installed. A right and left pair of lint markers 16R and 16L freely changeable between an operating posture for forming a traveling index line on the surface of a paddy field to be transplanted at the next time, and a housed posture, and a housing means for fixing the lining markers 16R and 16L by changing positions from the operating position to the housed positions so as to be interlocked with the lifting of the rice-transplanting device 2 lifted over the range for transplanting the seedling are installed. A selecting means for changing the housed position to the operation posture by selecting the line marker 16R or 16L to be changed to the operation position and releasing the fixing of the line marker 16R or 16L at the selected side is installed so that the line marker 16R or 16L selected based on the detection of grounding of a seedling- transplanting device 2 may be changed to an operation position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marker operating device for a rice transplanter, and more particularly, a raising and lowering device for driving and raising and lowering a seedling planting device connected to a rear portion of a self-propelled machine. Means, a pair of left and right line drawing markers that can be switched between an action posture that projects left and right outward to form a running index line on the next planting scheduled rice field surface and a retracted posture that is retracted inward left and right,
A storage means is provided for switching the drawing marker in the working position to the storage position and fixing the drawing marker in the working position in conjunction with the rise of the seedling planting device beyond the planting elevating range, and selecting a drawing marker to be switched to the working position. The present invention relates to an apparatus provided with a selection means for releasing fixing to a drawing marker on a selected side and switching to a working posture.

[0002]

2. Description of the Related Art Conventionally, a drawing marker, which has been released from being fixed, is switched to a working posture as the seedling planting device descends.

[0003] Conventionally, a drawing marker to be switched to the action posture is manually selected.

[0004]

However, the prior art described above has the following disadvantages.

[0005] In a rice transplanter, the seedling planting apparatus is sometimes lowered on the road or in a barn to a position halfway up and down to perform maintenance or the like on the seedling planting apparatus. In such a case, according to the related art in which the drawing marker is switched to the operating posture with the descending of the seedling planting device, if the fixing to the drawing marker is released, the drawing marker moves up and down the seedling planting device. May be unexpectedly switched to the acting posture side with the descent to the middle of the operation.

In the conventional case where the drawing marker is manually selected, since the selection of the drawing marker is performed when the aircraft turns on the headland, the operation of selecting the drawing marker hinders the turning operation, and the turning operability is reduced. Had been lowered.

An object of the present invention is to eliminate the above-mentioned conventional disadvantages.

[0008]

The features, functions and effects of the marker operating device for a rice transplanter according to the present invention according to claim 1 are as follows.

[Features] A seedling planting device is connected to the rear part of the self-propelled machine so as to be able to move up and down, and raising and lowering means for driving and raising and lowering the seedling planting device are provided. Providing a pair of left and right line drawing markers that can be switched between an operating position that forms a travel index line and a stored position that is retracted inward left and right,
A storage means is provided for switching the drawing marker in the working position to the storage position and fixing the drawing marker in the working position in conjunction with the rise of the seedling planting device beyond the planting elevating range, and selecting a drawing marker to be switched to the working position. In a rice transplanter provided with selection means for releasing the fixation to the drawing marker on the selected side and switching to the working posture, as the selecting means, the drawing marker is set to the working posture based on detection of the ground contact of the seedling planting device. The point is that means for switching is provided.

[Action] Since the drawing marker is switched to the action position based on the detection of the ground contact of the seedling planting apparatus, it is possible to draw a line even if the seedling planting apparatus is lowered halfway on the road or in a barn. The marker does not switch to the action posture side.

[Effect] Accordingly, it is possible to reliably prevent the drawing marker from unexpectedly switching to the operating position on the road or in a barn.

The features, operations and effects of the rice transplanter marker operating device according to the second aspect of the present invention are as follows.

[Features] A seedling planting device is connected to the rear part of the self-propelled machine so as to be able to move up and down, and raising and lowering means for driving and raising and lowering the seedling planting device are provided. Providing a pair of left and right line drawing markers that can be switched between an operating position that forms a travel index line and a stored position that is retracted inward left and right,
A storage means is provided for switching the drawing marker in the working position to the storage position and fixing the drawing marker in the working position in conjunction with the rise of the seedling planting device beyond the planting elevating range, and selecting a drawing marker to be switched to the working position. In a rice transplanter provided with a selection means for releasing the fixation on the selected side drawing marker and switching to a working posture, the selection means may include a body turning operation on a headland or an operation based on the draw to be released. The present invention is characterized in that a means for selecting a marker and switching the drawing marker to an action posture based on detection of the ground contact of the seedling planting device is provided.

[Action] Since a body turning operation such as a steering handle operation on a headland or a raising operation of a seedling planting apparatus or an operation based thereon is selected, a drawing marker to be released is selected. No special operation for selection is required. In addition, since the drawing marker is switched to the working posture based on the detection of the ground contact of the seedling planting device, the drawing marker operates in the working posture even when the seedling planting device is lowered halfway on the road or in a barn. It does not switch to the side.

[Effect] Therefore, it is possible to select a drawing marker to be switched to the action posture while maintaining excellent body turning operability on the headland, and to unexpectedly draw a drawing marker on a road or a barn. Switching to the working posture side can be reliably prevented.

The features, functions and effects of the marker operating device for a rice transplanter according to the third aspect of the present invention are as follows.

[Features] In the marker operating device for a rice transplanter according to the first and second aspects of the present invention, the seedling planting device includes a ground contact sensor, and the contact pressure of the ground contact sensor is maintained within a set range. Is provided with lifting control means for controlling the lifting means, and the grounding sensor detects the grounding of the planting apparatus.

[Operation] Since the elevation control means for controlling the elevation means is provided so that the earth pressure of the earth sensor provided in the seedling plant is maintained in the set range, the earth pressure is maintained in the set range. Thereby, good planting can be performed while maintaining the planting depth almost constant. In addition, because the grounding sensor is configured to detect the installation of the seedling planting device,
No special sensor for detecting the installation of the seedling planting device is required.

[Effect] Therefore, it is possible to perform good planting and to reduce the cost by using the sensor for both purposes.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a rice transplanter is a seedling planting device 2 of an eight-row plantation specification at the rear of a riding type self-propelled machine 1.
Are connected to each other via a four-link mechanism 3 so as to be able to move up and down freely, and the seedling planting apparatus 2 is moved up with the supply of pressurized oil to the lift cylinder 4 and the seedling planting apparatus 2 is brought up with drainage from the lift cylinder 4. An elevating means for lowering by its own weight is provided, and a fertilizer application device H is provided.

The self-propelled machine 1 has an engine 7 mounted on the front of a body frame having a pair of left and right driving front wheels 5 and a pair of left and right driving rear wheels 6 for steering. The driving seat 8 is configured to be mounted.
A steering handle 9 for steering the driving front wheel 5 is disposed in front of the steering wheel 9. As shown in FIG. 4, an elevating lever A is mounted on the handle post 9A of the steering handle 9 so as to be able to swing up and down. The elevating lever A has an upper ascending position U and a lower ascending position D. To the neutral position N intermediate between them.

As shown in FIG. 2, the seedling planting apparatus 2 has an eight-row specification seedling platform 10 that reciprocates with a set stroke in the left-right direction in a state where eight seedlings are arranged in the left-right direction. Circulating up and down in conjunction with movement of the seedling rest 10 between a seedling outlet 12 formed on a slide rail 11 slidably supporting the lower end of the seedling rest 10 and the rice field. And a planting mechanism 13 for taking out one plant from the seedling rest 10 one by one and planting it on the rice field surface, and providing a leveling means.

As shown in FIG. 2, the above-mentioned leveling means comprises a center float 1 for leveling the field to be planted at the left and right central two rows.
4A, a pair of left and right side floats 14B for leveling the two planned right and left planting planned rice fields, a pair of left and right ground leveling plates 14C for leveling the right and left outer one planned field surface, and located on both left and right sides. An idle-type mud-proof disc 14D is provided to prevent the mud soil extruded to the left and right outside by the side float 14B from flowing out to the planted side. As shown in FIG. 4, the center float 14A also serves as a ground sensor 15 that swings up and down with a change in the ground pressure to output the vertical swing position as a ground pressure via a potentiometer 15a. I have.

As shown in detail in FIG. 4, the seedling planting apparatus 2 has a working posture for projecting left and right outward to form a running index line L on a field to be planted next time and a retracted posture for left and right inward. A pair of left and right drawing markers 16L that can be switched between
16R.

Then, the rice transplanter stores the control device 17 using a microprocessor and the drawing marker 16L or 16R in the working position in conjunction with the raising of the seedling planting device 2 beyond the planting range. Storage means for switching to the posture and fixing it, and selection means for selecting the drawing marker 16L or 16R to be switched to the working posture and releasing the fixation to the drawing marker 16L or 16R on the selected side to switch to the working posture. I have.

As shown in FIG. 4, the control device 17
When the raising switch US detects that the raising / lowering lever A has been moved to the raising position U, the raising / lowering means controls the lift cylinder 4 so as to raise the seedling planting device 2 to the upper limit of the raising / lowering range. While controlling the valve V, the electric planting clutch 19 for interrupting transmission to the seedling planting device 2 is turned off, and the upper limit sensor 18 detects that the seedling planting device 2 has risen to the upper limit. At this time, the control valve V is controlled to be in an up / down stop state, and when the lowering switch DS detects that the raising / lowering lever A has been operated to the lowering position D, the raising / lowering maintaining the ground pressure of the ground sensor 15 in a set range. Elevating control means C for controlling the control valve V so as to elevate and lower the seedling planting device 2 at the position is provided. Further, the control device 17 activates the planting clutch 19 when the lowering switch DS detects the operation of the raising / lowering lever A to the second lowering position D.

As shown in FIGS. 3 (a), (b) and FIG. 4, the storage means is provided for moving the seedling planting apparatus 2 and the self-propelled machine 1 relative to the rise of the seedling planting apparatus 2. The drawing marker 16 </ b> L in the working posture is pulled by using
Or pulling wire 20 for raising 16R to the retracted position
And a pull link that pulls the pulling wire 20 by being pushed and rocked by an arm 3a attached to the quad link mechanism 3 in accordance with the rocking of the quad link mechanism 3 that raises the seedling planting apparatus 2. 20a, and a locking claw 21 for automatically engaging the drawing markers 16L and 16R raised to the storage position and fixing the drawing markers 16L and 16R to the storage position. In addition,
The drawing markers 16L and 16R are switched to the working posture as the seedling planting apparatus 2 is lowered in a state where the fixing by the lock claws 21 is released.

As shown in FIG. 5, the selection means is provided with a drawing marker 16 to be unlocked by an operation for turning the body on the headland.
L or 16R, and the ground sensor 15
Means for switching the drawing markers 16L and 16R to the action posture based on the detection of the contact of the seedling planting device 2 by the contact. Specifically, as shown in FIG.
And a selector switch for selecting an actuator 22 to be operated each time the elevating lever A is operated to the ascending position U, that is, selecting an actuator 22 to be energized. The control device 17 is provided with a means 23 and a grounding switch means 24 which is turned on when grounding is detected by the grounding sensor 15 to establish a power supply circuit for the selected actuator 22.

Therefore, in this embodiment, as shown in FIG. 5, the raising operation of the seedling planting device 2 for turning the body on the headland, that is, the operation of moving the raising / lowering lever A to the raising position U is performed. The changeover switch means 23 is switched to the side for releasing the lock claw 21 with respect to the drawing marker 16L or 16R on the outside of the turning, and the side selected by turning on the grounding switch means 24 with the grounding of the seedling planting apparatus 2 after turning. Is switched to the action posture.

At the front of the self-propelled machine 1, a running sight 31 is mounted in a posture along the upper part of the engine bonnet 30. In the state where the grounding is detected, when the engagement operation of the planting clutch 19 is not detected by the clutch sensor 32, a clutch forgetting alarm lamp 33 which lights up when it is determined that the planting clutch 19 has not been engaged is mounted. ing.

As shown in FIGS. 1 and 2, the fertilizer applicator H is equipped with a fertilizer hopper Ha that stores fertilizer in the self-propelled machine 1 and feeds out the fertilizer in conjunction with planting. A fertilizer groove H is formed on the side of the planting area for fertilizer application and the fertilizer sent is supplied to the groove.
b is mounted on the seedling planting apparatus 2 and is provided with a blower He that is driven by an electric motor Hc to generate wind for pneumatically conveying the fed fertilizer to the groove generator Hb via a hose Hd. I have.

[Alternative Embodiment] In the above embodiment, the raising operation of the raising / lowering lever A is automatically selected as the line turning markers 16L and 16R as the operation for turning the body. The operation based on the operation for turning the body may be performed by automatically selecting the drawing markers 16L and 16R.

In the above embodiment, the drawing marker 16
L and 16R are automatically selected.
Can be operated forward and backward, the left drawing marker 16L is selected by operating the lifting lever A forward, and the right drawing marker 16R is selected by operating backward. , 16R may be selected manually.

[Brief description of the drawings]

Fig. 1 Side view of rice transplanter

FIG. 2 is a plan view showing the leveling means.

FIG. 3 is a side view of a main part of the storage means.

FIG. 4 is a control block diagram.

FIG. 5 is a plan view of a planting form.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-propelled main unit 2 Seedling plant L Running index line 16L Drawing marker 16R Drawing marker 15 Grounding sensor C Elevation control means

 ──────────────────────────────────────────────────の Continuing on the front page (72) Makoto Kubotsu 64, Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. Office (72) Inventor Seiichi Tanaka 64 Ishizu-Kitacho, Sakai City, Osaka Prefecture F-term in Kubota Sakai Works Co., Ltd.

Claims (3)

[Claims] 1. A seedling planting device is connected to the rear part of the self-propelled machine so as to be able to move up and down, and raising and lowering means for driving and raising and lowering the seedling planting device are provided. A pair of left and right line drawing markers are provided which can be switched between an operation posture for forming an index line and a retracted posture which is retracted left and right inward, and the operation is performed in conjunction with a rise of the seedling planting device beyond a planting range. A storage means for switching the drawing marker in the posture to the storage posture and fixing it is provided, and a selection means for selecting the drawing marker to be switched to the operation posture and releasing the fixation on the selected drawing marker and switching to the operation posture. In a rice transplanter,
A marker operating device for a rice transplanter, comprising: means for switching a drawing marker to an action posture based on detection of ground contact of the seedling planting device. 2. A self-propelled machine is connected to a rear part of a seedling planting device so as to be able to move up and down, and a raising and lowering means for driving and raising and lowering the seedling planting device is provided. A pair of left and right line drawing markers are provided which can be switched between an operation posture for forming an index line and a retracted posture which is retracted left and right inward, and the operation is performed in conjunction with a rise of the seedling planting device beyond a planting range. A storage means for switching the drawing marker in the posture to the storage posture and fixing it is provided, and a selection means for selecting the drawing marker to be switched to the operation posture and releasing the fixation for the selected side drawing marker and switching to the operation posture is provided. In a rice transplanter,
A rice transplanter provided with means for selecting a drawing marker to be unlocked by an operation for turning the body on the headland or an operation based on the operation, and for switching the drawing marker to an operation posture based on detection of the ground contact of the seedling planting device. Marker operating device. 3. The seedling planting apparatus includes a ground contact sensor, and elevation control means for controlling the elevation means so that the contact pressure of the contact sensor is maintained within a set range. 3. The marker operating device for a rice transplanter according to claim 1, wherein the marker operating device is configured to detect grounding of the attaching device.