JPH0837840A - Rice transplanter - Google Patents

Abstract

PURPOSE:To provide a rice transplanter capable of rapidly controlling lifting of a seedling transplanter and selecting a line marker. CONSTITUTION:This rice transplanter is equipped with a first sensor S1, a second sensor S2 and a control means 33. When the first sensor S1 detects an operation of a managing tool 14 in the predetermined direction, a seedling transplanter on a working level is lifted to a predetermined level. Or, the seedling transplanter on the lifted level is descended to the working level. When the second sensor S2 detects the operation of the managing tool 14 in the rectangular direction to the predetermined direction, the control means 33 allows to switch to a lodging attitude by selecting one of left and right line markers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter, and more particularly to a technique for controlling the elevation of a seedling planting device and the posture of a line marker.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 6-70618, as a technique for controlling the elevation of a seedling planting apparatus,
There is one that controls the raising of the seedling planting device to a predetermined level and the lowering thereof to a working level by operating a single operating tool arranged near the steering handle. Also, in the conventional rice transplanter, the left and right line markers are forcibly held in the upright posture every time the seedling planting device rises to a predetermined level, and when the seedling planting device descends, the left and right line markers are collapsed. There is a configuration in which the line marker can be laid down by selecting an operation item with a dedicated operation tool.

[0003]

When the machine body reaches a headland during work, the seedling planting device is raised to a level away from the field scene before the turning operation of the machine body, and then the steering is performed. It is necessary to rotate the machine body by operation, lower the seedling planting device to the working level at the end of this rotation, and further select the line marker to be laid down before or immediately after the descending. In this way, when the machine body is turned, the raising and lowering control of the seedling planting device and the selection of the line marker must be performed by separate operation tools within a relatively short time, and there is room for improvement in terms of troublesomeness.

An object of the present invention is to rationally construct a rice transplanter capable of quickly controlling the raising and lowering of a seedling planting device and selecting a line marker.

[0005]

The features of the present invention are: a first sensor for detecting that an operating tool is operated in a predetermined direction;
A seedling planting device provided with a second sensor that detects that the operating tool is operated in a direction orthogonal to the predetermined direction, and that is movable up and down on the traveling machine body when the operation of the operating tool is detected by the first sensor. At the same time as
A control operation for disengaging the clutch mechanism interposed in the transmission system from the traveling machine body to the seedling planting device is performed, and thereafter, when the operation of the operating tool is detected by the first sensor, the seedling planting device in the raised state is activated. Performs a control operation to lower the work level, and
When the operation of the operating tool is detected by the second sensor, one of the left and right line markers configured to be switchable between the standing posture and the lying posture is selected, and a control means for allowing the switching to the lying posture is provided. And its action and effect are as follows.

[0006]

According to the above feature, for example, when the aircraft reaches the headland and turns the machine during work, the control means raises the seedling planting device to a predetermined level by operating the operation tool in a predetermined direction. And the clutch mechanism is disengaged, and when the turning of the machine is completed, the operation means is operated again in a predetermined direction so that the control means lowers the seedling planting device to the working level,
By operating the same operation tool in a direction orthogonal to the predetermined direction before or immediately after this descending, it is possible to select one of the left and right line markers to be laid down.

That is, the raising and lowering of the seedling planting device and the selection of the line marker can be performed by operating the single operating tool in different directions, and various types of operations can be performed within a short time, such as when the machine is turning. Even when performing different operations, it is possible to reduce complicated operations such as changing the operation tool.

[0008]

Therefore, a rice transplanter capable of rapidly controlling the raising and lowering of the seedling planting device and selecting the line marker was reasonably constructed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the engine 4 and the power from the engine 4 are not provided in the front part of the traveling machine body 3 including the drive-type front wheel 1 and the drive-type rear wheel 2 which are steered. Belt tension type continuously variable transmission 5 that shifts in stages,
A transmission case 6 to which power from the continuously variable transmission 5 is transmitted is mounted, a driver's seat 7 is arranged in the center of the traveling machine body 3, and a hydraulic cylinder 8 drives the rear end portion of the traveling machine body 3. Seedling planting device A via a link mechanism 9 that moves up and down
To form a riding-type rice transplanter.

An elevating lever 10 is provided on the right side of the driver's seat 7 for controlling the raising and lowering of the seedling planting device A and for opening and closing the planting clutch C as a clutch mechanism. A gear shift lever 11 for operating the gear shift device 5 is provided, and further, the support portion 13 of the steering handle 12 is operated to forcibly raise the seedling planting apparatus A to a predetermined level, and the seedling planting apparatus A is again operated. A switching lever 14 is provided as an operation tool for performing control for lowering A to the work level.

The elevating lever 10 is constructed so as to be operated along the path shown in FIG. 4, and when the elevating lever is set to the front side of the "lowering" position in the path, the seedling planting apparatus A is lowered and "raising" is performed. If set to the rear side from the position, the seedling planting device A
Is raised and set to the "neutral" position to keep the seedling planting device A at that level. Moreover, the lifting lever 10 is turned on.
When set to the position, the planting clutch C is turned on and operated, and "OFF"
When set to the position, disengage and operate the planting clutch C,
When the raising / lowering lever 10 is set to the "automatic" position, the raising / lowering of the seedling planting device A is allowed according to the operation of the switching lever 14, and at the same time, the planting clutch C is raised when the seedling planting device A is raised.
To turn off automatically.

The planting clutch C is linked to a mechanical restraining member (not described in detail) so that the cutting operation is allowed only in a rotation phase that avoids a posture in which a planting arm (described later) contacts the field. are doing.

As shown in FIG. 5, on the panel portion 15 in front of the driver's seat 7, there are lamps 16 indicating the working state, and a blue lamp 18A for indicating the amount of fuel remaining in the fuel tank 17 at the front of the fuselage, and a yellow lamp. It has three lamps, a lamp 18B and a red lamp 18C. Also, the blue lamp 18A lights up until the remaining fuel amount decreases to 3/8, and the yellow lamp 18B.
Lights up when the fuel remaining amount reaches 3/8 or less, and the red lamp 18C lights up when the fuel remaining amount reaches 1/4 or less, and when the lighting state of the red lamp 18C continues for a predetermined time or longer, the red lamp While blinking the lamp 18C,
A fuel remaining amount notification system is configured to operate a buzzer (not shown).

The seedling planting device A is rotated by the seedling mount 19 on which the mat-shaped seedling W is placed, the transmission case 20 to which power is transmitted from the traveling machine body 3, and the power transmitted from this transmission case 20 via the chain case 21. Rotary case 22,
The rotary case 22 is provided with a pair of planting arms 23 provided one by one and a plurality of ground leveling floats 24, respectively, and is configured for a plurality of rows, and the left and right ends are lines that can be switched between a standing posture and a lying posture. The markers 25, 25 are provided.

As shown in FIG. 6, the left and right line markers 25, 25 are rotatably supported on the frame portion 26 of the seedling planting device A about a support shaft 27 in a front-back direction and fallen down. The spring 28 that holds the posture and the line marker 25 that holds the spring 28 in the standing posture against the biasing force of the spring 28.
And a rocking type lock member 30 that engages with the pin 29 of the seedling planting device A. Further, when the seedling planting device A is raised, the relative posture of the member at the rear end position of the link mechanism 9 and the seedling planting device A is set. Wire 3 that uses the change to switch both left and right to the standing posture
1, 31 and a pair of left and right electromagnetic solenoids 32, 32 for switching the lock member 30 to the unlocked posture.

As shown in FIGS. 2 and 3, the switching lever 14 has an "up / down" position above the "neutral" position,
In the lower "clutched" position, and in the operation direction orthogonal to the operation direction from the "neutral" position to the "elevation" position,
The "left marker" position in front of the "neutral" position, the operation direction orthogonal to the operation direction from the "neutral" position to the "elevation" position, and the "right marker" in the rear position relative to the "neutral" position
It is operable in four positions and is configured to return to this "neutral" position.

As shown in FIG. 7, a control system is formed, and a potentiometer 34 for detecting the operating position of the elevating lever 10 and a switching lever 14 are moved up and down to a control device 33 having a microprocessor as a control means. The first limit switch type that is turned on when operated to the "" position
Set the sensor S1 and the switching lever 14 to the "left marker" position,
“Right marker” position A pair of limit switch type second sensors S2, S2, which are turned on when operated to the respective positions,
A limit switch type clutch switch 35 that is turned on when the switching lever 14 is operated to the “clutch engaged” position, and a level sensor 36 that determines the level of the seedling planting apparatus A from the attitude of the link mechanism 9 are connected to the input system of signals. In addition to having an electromagnetic valve 37 for controlling the hydraulic cylinder 8, a relay 39 for controlling the electric motor 38 for operating the planting clutch C, an output system for each of the electromagnetic solenoids 32 for the left and right line markers 25, The control operation of the control device 33 is performed according to the flowchart shown in FIG.

That is, when the control is started, the signal from the first sensor S1 is input, and when the first sensor S1 is turned on, the elevating lever 10 is moved to the "automatic" position based on the signal from the potentiometer 34. If it is set to “Auto” position, the level sensor 36
It is determined whether the seedling planting device A is at the work level based on the signal from the plant, and when it is at the work level, the planting clutch C is disengaged and the planting clutch C reaches the disengaged state. After the determination, the hydraulic cylinder 8 is driven to raise the seedling planting apparatus A to a predetermined level where it is separated from the field scene (# 101 to # 105 steps). When the seedling planting apparatus A is operated to be raised, the line marker 25 in the lying posture is operated in the standing posture by the tension of the wire 31 and is held in the standing posture by the lock member 30.

When the first sensor S1 is turned on and the raising / lowering lever 10 is in the "automatic" position and the seedling planting apparatus A is at the rising level, the seedling planting apparatus A is set to the elevated level. Control to lower to work level (# 106, # 1
07 step).

Next, even if the above control is not performed,
When the signals from the pair of second sensors S2 are input and one of the second sensors S2 is turned on, the electromagnetic solenoid 32 on the side turned on is driven to drive the line marker 25.
Is released (steps # 108 and # 109).
If the seedling planting device A is lowered when unlocking in this way, the line marker 25 on that side switches to the lying posture, but the seedling planting device A is not completely lowered. In addition, when the seedling planting apparatus A is completely lowered, the line marker 25 switches to an appropriate lying posture.

Even if the above control is not performed, when the signal from the clutch switch 35 is input and the clutch switch 35 is turned on, the electric motor 3
8 to control and operate the planting clutch C (# 11
0, step # 111).

In this way, the switching lever 14 is set to "neutral".
When operated to the upper "up and down" position based on the position, the seedling planting device A at the working level is separated from the field scene based on the signal from the level sensor 36 together with the disengagement operation of the planting clutch C. And the switching lever 14 is moved to this “up / down” position again, the seedling planting device A
Control to lower the work level to the work level, and "neutral"
When the switching lever 14 is operated to the front "left marker" position based on the position, the left line marker 25 is switched to the lying posture, and the switching lever 25 is operated to the rear "right marker" position based on the "neutral" position. Right line marker 25
When the switching lever 14 is operated to the lower "clutch engaged" position with reference to the "neutral" position, the planted clutch C in the disengaged state is engaged and operated. There is.

[Other Embodiments] In addition to the above embodiments, the present invention is
For example, the operation pattern of the switching lever 14 may be set as follows.

(A) As shown in FIG. 9 (a), similar to the above-described embodiment, the operation positions of "elevation,""leftmarker,""rightmarker,""clutched" are formed, and "clutched". Even if the switching lever is operated further in the front-back direction (the direction orthogonal to the path from the “neutral” position to the “elevation” position) from the position, the “left marker” position and the “right marker” position are set so that the line marker 25 is switched to the lying posture. Form a position.

(B) As shown in FIG. 9 (b), the "elevating" position and "clutch engaged" are formed as in the above embodiment, and the "neutral" position is changed in the front-rear direction (from the "neutral" position to the "neutral" position. When the switching lever is operated in a direction orthogonal to the path toward the "elevation" position, the "left marker / clutch engaged" position is set so that the planting clutch C is engaged and disengaged at the same time when the line marker 25 is switched to the lying posture. "Right marker
Forming the "clutched" position.

Further, according to the present invention, the operation position for raising and lowering the seedling planting device is not formed above the "neutral" position, but "neutral".
The position can be set in any direction, the potentiometer can be used as a sensor to detect the operation of the switching lever (operation tool), and the control means can be a hardware combination of a comparator, logic gate, etc. It is also possible to configure the circuit only.

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

[Brief description of drawings]

[Figure 1] Overall side view of rice transplanter

[Fig. 2] Side view of the switching lever

FIG. 3 is a schematic view showing an operating position of a switching lever.

FIG. 4 is a plan view of an operation path of a lifting lever.

FIG. 5 is a plan view of a fuel remaining amount notification system.

FIG. 6 is a rear view of the operation system of the line marker.

FIG. 7 is a block circuit diagram of a control system.

FIG. 8 is a flowchart of control operation

FIG. 9A is a schematic view showing an operation position of a switching lever of another embodiment (A), and (B) is a schematic view showing an operation position of a switching lever of another embodiment (B).

[Explanation of symbols]

 3 traveling machine body 14 operation tool 33 control means 25 line marker A seedling planting device C clutch mechanism S1 first sensor S2 second sensor

Claims (1)

[Claims] 1. A first sensor (S1) for detecting that the operating tool (14) has been operated in a predetermined direction, and the operating tool (1).
4) is provided with a second sensor (S2) for detecting the operation of the operation tool (14) in a direction orthogonal to the predetermined direction, and when the operation of the operation tool (14) is detected by the first sensor (S1), the traveling machine body (3) is detected. ), The seedling planting device (A) that can be lifted up and down is raised to a predetermined level, and at the same time, a clutch mechanism (C) interposed in a transmission system from the traveling machine body (3) to the seedling planting device (A). Then, when the operation of the operation tool (14) is detected by the first sensor (S1), a control operation of lowering the elevated seedling planting device (A) to a working level is performed. Further, when the second sensor (S2) detects the operation of the operation tool (14), the left and right line markers (25) are configured to be switchable between a standing posture and a lying posture.
(25) A rice transplanter comprising control means (33) for selecting one of the two and permitting switching to a lying posture.