JP3335660B2 - Rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction for raising and lowering a seedling planting device in a rice transplanter.

[0002]

2. Description of the Related Art Many rice transplanters are provided with a drive mechanism for driving up and down a seedling planting device provided on a traveling machine body, and the drive mechanism allows the seedling planting device to freely move up and down.

[0003]

In a rice transplanter, for example, during a planting operation in a paddy field, when a single planting process is completed and the traveling machine reaches a ridge, a pilot operates a planting clutch of a seedling planting device. , The seedling planting apparatus is stopped, the seedling planting apparatus is raised from the rice field surface, the steering handle is operated, and the traveling machine body is turned around the ridge while the seedling planting apparatus is largely lifted. When the turn around the ridge ends, the pilot lowers the raised seedling planting device to the rice field surface, turns on the planting clutch to operate the seedling planting device, and sets the running target on the rice field. A selection operation is performed to select which of the left markers is to be set in the action posture, and the next planting process is started.

As described above, in a rice transplanter, many operations such as engaging and disengaging the planting clutch, raising and lowering the seedling planting device, and the like, as described above, must be performed quickly in a short period of time, for example, on the ridge. The operation of raising and lowering the seedling planting apparatus and other operations may be difficult, especially for an unskilled person. The present invention relates to a rice transplanter,
An object of the present invention is to provide a configuration in which the raising and lowering operations and other operations of the seedling planting device can be easily performed.

[0005]

A feature of the present invention is that a rice transplanter is configured as follows. The seedling planting apparatus provided in the traveling body lifting drive freely supported, planting clutch that transmits power to the seedling planting device, and class with its planting
An electric motor for turning on and off the switch, raising the seedling planting device to a predetermined height accompanied by a turning operation of the planting clutch by the electric motor , and planting the seedling while maintaining the cutting state of the planting clutch. Switch to lower the device
An operation-type forcible lifting / lowering operation tool is provided in the vicinity of the handle, and the electric motor for operating the planting clutch is provided in front.
When the seedling planting device is lowered, the clutch side is inserted artificially.
An operation switch capable of outputting a signal for operating the vehicle is provided, and an operating position that projects laterally outward to set a running target on the rice field surface and a right and left marker that can be changed to a non-operating position that is upward away from the operating position are provided. A switching mechanism for alternately selecting a right or left marker to be operated to be changed to an action posture by a driving force , automatically with the raising of the seedling planting device by operation of the forcible lifting operation tool, switching mechanism are coordinated to select alternately the right or left of the marker is changed operated action posture.

[0006]

According to the first aspect of the present invention, when the forcible raising / lowering operation tool is operated, the seedling planting device is raised to a predetermined height with the operation of disengaging the planting clutch. Thus, for example, when the rice transplanter reaches the edge of the ridge, just operate the forced lifting operation tool,
Since the seedling planting device rises with the disengagement operation of the planting clutch, the operation burden on the operator is reduced by that much . I
The forcible lifting operation tool is a switch provided near the handle
Since it is configured as an operation type, it is large from the handle
When turning, compared to operating a remote control
Operation in one touch with extremely short time
Can be done with In addition, the planting clutch can be
The turning operation is performed by the operation of the electric motor accompanying the switch operation.
The pilot must perform only minor switch operations.
Easy to operate instantaneously with working load. Therefore, the operator can easily and quickly perform the operation for raising and lowering the seedling planting apparatus, and concentrate on other operations such as the operation of the operation handle.

[II] The electric motor is operated in accordance with the ascent operation with the forcible elevating operation tool.
The planting clutch is disengaged and the pilot
Can be operated by simply pressing the switch of
・ A series of operations of “elevation of the planting section” can be performed quickly.
In the lowering operation, the planting clutch
The electric motor is activated by the operator's switch operation.
Since the latch is inserted, it is possible to prevent a situation in which the planting clutch is operated during the lowering of the seedling planting device (for example, the planting clutch is lowered during the lowering of the seedling planting device). When the seedling planting device is started to operate and the seedlings are planted in the air above the paddy field, the seedlings are thrown onto the paddy field. In other words, it is possible to prevent the planting clutch from being engaged during the descent of the seedling planting device to start the operation.

[III] A rice transplanter often travels while setting a travel target for the next planting process on a rice field in one planting process, and is provided with right and left markers for setting a travel target on the rice field. ing. The right and left markers protrude in the lateral direction and are configured to be freely changeable to a working posture for setting a traveling target on the rice field surface and a non-working posture separated upward from the working posture. in this case,
For example, if you are traveling on one planting process with the right marker set to the working position, and the traveling body reaches the ridge and turns and enters the next planting process, the left marker is set to the working position I do. When the vehicle reaches the opposite ridge and turns and enters the next planting process, the right marker is set to the action position and the right and left markers are activated each time the ridge turns. It is necessary to perform a state switching operation.

According to the first aspect of the present invention, there is provided a switching mechanism for alternately selecting the right or left marker to be changed to the operating position, and the forcible raising and lowering operation tool is operated to raise the seedling planting device. The switching mechanism is linked so as to alternately select the right or left marker to be changed to the action posture. By this, for example, when traveling on one planting stroke with the right marker set to the working posture, when the traveling body reaches the ridge and turns and enters the next planting stroke, the forced lifting operation tool When the seedling planting device is raised by the operation, the left marker is set to the operation position when the operation for changing to the operation position is performed. Next, when the traveling machine reaches the opposite ridge side and turns and enters the next planting process, if the seedling planting device is raised by operating the forced lifting operation tool, the operation to change to the working posture is performed. The right marker is set to the action posture when it is pressed. Therefore, according to the feature of the first aspect, every time the seedling planting device is raised by operating the forcible raising / lowering operation tool, the selection of the right or left marker to be changed to the action posture is automatically performed alternately. .

[IV] According to the feature of claim 1 , the left and right markers in the switching mechanism
Are alternately switched by the driving force.
The operation of the switching mechanism corresponds to the switch operation of the forcible lifting operation tool
Automatically when the seedling plant is raised.
Therefore, the left or right
Car can be alternately selected by driving force.
You.

[0011]

According to the first aspect of the present invention, the operation is performed by operating the forcible lifting / lowering operation tool so as to raise the seedling planting device to a predetermined height with the disengagement operation of the planting clutch. The burden on the operator is reduced, and the operator can concentrate on other operations such as operating the steering wheel, thereby improving the operability of the rice transplanter. I
The forcible lifting operation tool is a switch provided near the handle
It is configured as an operation type and has a planting clutch.
Is turned off by the operation of the electric motor accompanying the switch operation.
Operation for lifting and lowering when turning
Can be performed in a very short time with the
Light operating load for switching operation, just switch operation
Operation can be performed instantaneously and
Simple and quick operation for raising and lowering the attachment device
Can be.

According to a feature of the first aspect, the "elevating operation"
Just operate the switch to raise the clutch release / planting section.
Lowering operation while a series of operations can be performed quickly
In this case, the planting clutch does not move in
To operate the electric motor to engage the clutch
Therefore, it is possible to prevent a situation in which the planting clutch is engaged during the descent of the seedling planting device, and the planting clutch is engaged during the descent of the seedling planting device. The problem caused by this was prevented.

According to the first aspect of the present invention, each time the seedling planting device is raised by operating the forcible raising / lowering operating tool, the right or left marker to be changed to the operating posture is automatically and alternately selected. Therefore, there is no need to perform a dedicated selection operation to set which of the right and left markers to the action posture, which reduces the burden on the operator and allows the operator to operate the operation handle. The user can now concentrate on other operations, improving the operability of the rice transplanter.

According to a feature of the first aspect , the left side of the switching mechanism is provided.
The right marker is switched by driving force
The operation of the switching mechanism is controlled by the switch of the forcible lifting / lowering operating tool.
Automatically when the seedling plant is raised by the switch operation
Is changed to the action posture.
Select the right or left marker alternately by driving force
I can. Therefore, using artificial operation tools
Compared to switching the marker position by operating force
When the operation load is heavy, it takes time to switch
There is no danger of delaying cropping.

[0015]

Embodiments will be described below with reference to the drawings. FIG. 6 shows a riding type rice transplanter. In this riding type rice transplanter, a seedling planting device 2 is connected to a rear portion of the riding type traveling machine body via a parallel four-link type link mechanism 1 so as to be able to drive up and down and roll around the longitudinal axis. . On a pivot boss 3 provided on the rear link 1a of the link mechanism 1, a planting transmission case 4 which is also used as a frame so as to be rotatable around a longitudinal axis Y.
, Which are pivotally supported and are reciprocated laterally in the planting transmission case 4 with a constant stroke, and a plurality of planting mechanisms for taking out seedlings for planting one by one from the lower end of the planting stand 5 and planting them on the rice field. 6, the seedling planting apparatus 2 is provided with three grounding floats 7 arranged in parallel on the left and right.

As shown in FIG. 6, the seedling planting apparatus 2 is moved up and down by an expansion and contraction drive of a hydraulic cylinder 10 connected between a middle part of the link mechanism 1 and the body frame 8 via a suspension spring 9. Is done. As shown in FIGS. 5 and 6, a rolling operation mechanism 12 is configured by an electric motor M <b> 1 and a screw feed mechanism 11 provided between the rear link 1 a and the back side of the seedling rest 5. The seedling planting apparatus 2 is driven to roll by the mechanism 12.

As shown in FIGS. 5 and 6, the hydraulic control valve V for the hydraulic cylinder 10 is of an electromagnetic type.
It is operated by a control device 13 having a microcomputer. Based on the detected value of the potentiometer PM2 based on the operation position of the lift lever 16 disposed on the side of the driver's seat 15 of the aircraft control unit 14, the lift operation state, the lower operation state, and the neutral stop state of the hydraulic cylinder 10 are artificially displayed. The lifting operation switch SW1 provided on the control panel 17 causes the hydraulic cylinder 10 to alternately display an ascending operation state and a descending operation state. Transmission operating lever 19 of gear type main transmission 18 of traveling body
Has been operated to the reverse position, the reverse detection switch SW2
, The lifting operation state of the hydraulic cylinder 10 is automatically set.

In the planting state, the elevation control means A for maintaining the height of the seedling plant 2 above the ground at a predetermined value is provided in the control device 13 in the form of a control program. As shown in FIGS. 5 and 6, the left and right center ground floats 7 are supported so as to be able to swing up and down around the rear fulcrum, and the front side of the ground float 7 with the change in the ground height of the planting and seedling planting apparatus 2. The control device 13 operates the hydraulic control valve V so that the relative vertical movement based on the ground pressure fluctuation is detected by the potentiometer PM1 via the link 20 and the detected value of the potentiometer PM1 falls within a predetermined setting region. The height of the seedling plant 2 above the ground is maintained at a predetermined value.

When the seedling planting device 2 rises to the maximum rising position in accordance with the operation of the elevation switch SW1 and the detection of the reverse detection switch SW2, it is detected that the seedling planting device 2 has risen to near the maximum rising position. Limit switch SW3
Is mounted on the rear wheel fender portion F of the traveling body, and the middle portion of the link mechanism 1 is brought into contact with the raising of the seedling planting device 2 to detect the limit switch SW3. Based on the detection of the switch SW3,
The raising operation of the hydraulic cylinder 10 automatically stops.

As shown in FIGS. 1, 5 and 6, the power from the traveling machine body is intermittently transmitted to the seedling planting device 2 via the planting clutch 21 and the transmission shaft 22. The attached clutch 21 is configured to be turned on and off by an electric motor M2 having a speed reduction mechanism. The electric motor M2 is operated by an operation switch S
An on / off operation is performed via the control device 13 by W4. When the raising and lowering switch SW1 is operated to raise the seedling planting device 2, the planting clutch 21 is automatically disengaged by the electric motor M2 in conjunction therewith, and the subsequent operation of the raising and lowering switch SW1 causes the seedling growing device 2 to move. Is lowered, the planting clutch 21 is turned on and operated by the electric motor M2 by manually operating the operation switch SW4.

As shown in FIG. 4 and FIG. 6, on both the left and right sides of the seedling planting apparatus 2, the working posture which projects laterally and outward to set a traveling target in the unplanted area, and retreats inward of the traveling machine body. Right and left markers 23R, 23L that can be changed to a non-action position
Is provided. Right and left markers 23R, 23L
Is urged by the spring 24 to the working posture, and is changed to the non-working posture by the pulling operation of the operation wire 26 by the roller 25 with the relative change posture of the rear link 1a due to the raising operation of the seedling planting apparatus 2. .

As shown in FIG. 4, in the non-operation position, the right and left markers 23R and 23L are automatically engaged,
Right and left locking mechanisms 27R and 27L for holding the right and left markers 23R and 23L in the non-operative position are provided, and the holding of the right and left locking mechanisms 27R and 27L is selectively released. When the seedling planting apparatus 2 descends, the selected right or left marker 23R, 23L is changed to the action posture. As shown in FIG. 2 and FIG. 1, a switching mechanism 28 for sequentially releasing the right and left locking mechanisms 27R and 27L alternately left and right is provided.
With the on and off operations of the planting clutch 21 by
The switching mechanism 28 is linked so as to operate.

As shown in FIG. 1, the switching mechanism 28 is disposed behind the lifting lever 16 disposed on the side of the driver's seat 15. As shown in FIGS. 1, 2, and 3, right and left cam plates 32R and 32L are attached to a cylindrical shaft 31 rotatably fitted to a lateral support shaft 30 supported by left and right brackets 29, A locking plate 33 for one-way rotation is attached to the cylindrical shaft 31. An arm 36 is integrally formed with an operating tool 35 that is swingably operated by an electric motor M2 via a speed reduction mechanism, and a rotating claw 38 linked to the arm 36 via a rod 37 is engaged with a groove 33a of the locking plate 33. Stop and lock plate 33
Are configured to rotate by a predetermined amount in one direction.

As shown in FIGS. 2 and 3, the outer peripheral cam surfaces of the right and left cam plates 32R and 32L are linked to the right and left lock mechanisms 27R and 27L (see FIG. 4) via operation wires 39. The cam roller 41 of the rotating arm 40 is pressed, and three convex portions 42 and concave portions 43 are formed on the outer peripheral cam surfaces of the right and left cam plates 32R, 32L at a predetermined pitch in the circumferential direction, The convex portions 42 and the concave portions 43 are arranged so as to be shifted from each other in a side view.
As a result, the right and left cam plates 32R and 32L are rotated by approximately 60 degrees in accordance with the swing operation of the arm 36 by the electric motor M2, and the right and left cam rollers 41 selectively ride on the convex portions 42. And right and left lock mechanisms 27R, 2
7L is selectively released.

With the above configuration, when turning around the ridge during planting work, the elevation switch SW1 is operated to
Each time the seedling planting device 2 is raised and the planting clutch 21 is disengaged, the right and left cam plates 32R, 32L are rotated, and the right or left markers 23R, 23L are changed to the working posture. Are automatically set alternately and sequentially. In this case, an operating tool 44 is provided for canceling the state in which the right and left markers 23R and 23L are automatically and alternately and sequentially changed to the operation posture.

In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of the vicinity of a switching mechanism and an electric motor.

FIG. 2 is a side view of a switching mechanism.

FIG. 3 is a cross-sectional plan view of a switching mechanism.

FIG. 4 is a diagram showing a structure of a change operation of a working posture and a non-working posture of right and left markers.

FIG. 5 is a block diagram of a control system.

FIG. 6 is an overall side view of a riding rice transplanter.

[Description of Signs] 2 Seedling planting device 21 Planting clutch 23R, 23L Right and left markers 28 Switching mechanism SW1 Forced raising / lowering operation tool SW4 Operation switch M2 Electric motor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-309105 (JP, A) JP-A-2-109901 (JP, A) Fully open 60-133709 (JP, U) Really open 1960 46807 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 322 A01C 11/02 330 A01B 69/02

Claims (1)

(57) [Claims] 1. A seedling planting device (2) provided in a traveling machine body.
The elevation driving rotatably supported, planting clutch for transmitting power to the seedling planting apparatus (2) (21), and, Kura with its planting
Electric motor (M2) for turning on and off the switch (21)
Comprising a, the electric motor (M2) of the planting clutch (21)
Given rise to a height, and lowering switch operation to create the said seedling planting apparatus which maintains the disengaged condition of the planting clutch (21) (2) of that the seedling planting involves cutting operation unit (2)
An electric motor (M) for operating a planting clutch (21) while providing a forced lifting / lowering operation tool (SW1) of a type near a handle.
When the seedling plant (2) is lowered with respect to 2),
Operation that can output a signal to operate the clutch side
Right and left markers (23R) and (23L), which are provided with a switch (SW4) and protrude laterally outward and set a running target on the rice field surface, and can be freely changed to a non-operative position separated upward from the above-mentioned operational position. The right or left marker (23
R) and (23L) are alternately selected by a driving force, and a switching mechanism (28) is provided. The switching mechanism (28) is automatically operated when the seedling planting device (2) is raised by operating the forcible lifting / lowering operating tool (SW1).
A rice transplanter, wherein the switching mechanism (28) is linked so as to alternately select the right or left marker (23R) or (23L) whose operation posture is to be changed.