JPH0242908A - Rice transplanter seedling planting device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for moving seedlings back and forth in the lateral direction, and removing the seedlings from the lower edge of the mat-like seedlings placed on the seedlings rest. A rice planting system that is equipped with a planting mechanism that cuts out each plant one by one and plants them in the field, and a vertical feeding mechanism that sends the mat-like seedlings placed on it downward by a predetermined amount each time the seedling platform reaches the end of its horizontal stroke. The present invention relates to a seedling planting device for a machine, and more specifically, to a technique for supplying seedlings to a seedling stand.

[Conventional technology]

As mentioned above, there is a technique for replenishing seedlings to the seedling stand, as shown in Japanese Patent Application Laid-Open No. 62-48313. In order to supply seedlings as efficiently as possible, the mechanism for sending out spare seedlings and the vertical feeding mechanism of the seedling stand are linked in operation.

[Problem to be solved by the invention]

In addition, the work to feed seedlings to the seedling stand is performed not only during the work but also before the start of the work. Seedlings are sent to each of the multiple rows of the seedling stand depending on the position.

However, when the machine is installed in a weak field, for example, the worker must enter the rear of the machine to feed the seedlings into the seedling stand, which is cumbersome due to unstable footing, and there is still room for improvement. be.

Therefore, it is conceivable that the operator slides the seedlings onto the seedling stand from the position of the operating section of the machine, but as mentioned earlier, the vertical feeding mechanism provided on the seedling stand can feed the seedlings. You will be hindered.

It is an object of the present invention to provide a seedling planting device that can send seedlings to the lower end of the seedling stand through rational modification, even when the seedlings are slid from the top of the seedling stand.

[Means to solve the problem]

As described above, the present invention is characterized in that a seedling planting device is provided with a vertical feeding mechanism in a seedling platform, in which an actuator for driving the vertical feeding mechanism is provided, and the seedling platform is placed at the end of the stroke. The present invention further comprises a control means for controlling an actuator to send the mat-shaped seedlings placed on the seedling stand downward by more than the predetermined amount by manual operation at a position before the seedlings reach the predetermined amount. is as follows.

[For production]

If the above features are configured as shown in FIGS. 1 and 2, for example, the start switch (SWO) can be artificially set to ON, and the control means (26) will actuate the actuator (16), thereby: Seedling scooping board (17
) At the same time as the mat-shaped seedlings (W) are fed out, the vertical feeding mechanism (12) also sends the mat-shaped seedlings (W), and as a result, the mat-shaped seedlings (W) are finally fed out as shown in Figure 4 (E). ill) to a position where it comes into contact with the sliding rail (11).

In addition, in the embodiment shown in Fig. 2, during the work, the seedling stand (
8) is equipped with a device for supplying spare seedlings, so the mat-like seedlings (IQ) on the seedling scooping plate (17) are also sent at the same time, but in terms of the essence of the invention,
It is sufficient to provide only a system for operating the vertical feed mechanism (12).

〔Effect of the invention〕

Therefore, by modifying the device by installing an actuator and a control means to arbitrarily operate the vertical feeding mechanism when not in use, even when the seedlings are slid from the top of the seedling tray, the seedlings can be moved to the bottom position of the seedling tray. A device for planting seedlings was obtained.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Fig. 5, a seedling planting device (A) is connected to the rear end of a traveling body (2) having a driver's seat (1) via a link mechanism (4) that moves up and down by the drive of a hydraulic cylinder (3). are connected to form a riding-type rice transplanter.

The seedling planting device (A) consists of a transmission case (5) to which the power from the traveling body (2) is transmitted, three chain cases (6) to which the power from the transmission cases (5) is transmitted, and these chains. case (6) a pair of rotating cases (7a) provided on each side member, a planting mechanism (7) having a planting arm (7b), and a seedling stand (8) for 6 rows;
A preliminary seedling replenishing device (B) is provided above the seedling stand (8).

As shown in FIG. 2, at the left and right positions of the transmission case (5), there are movable frames (10 ) is arranged, the movable frame (10) and the seedling stand (8) are connected, and the seedling stand (8) is supported so as to be slidable laterally on the sliding rail (11). By doing so, the seedling stand (8) reciprocates in the lateral direction during work.

As shown in the figure, the seedling stand (8) has upper and lower wheels (1
2a) and (12b) are equipped with a vertical feeding mechanism (12) formed by winding a belt with protrusions (12c), and a hexagonal shaft ( 13) via a ratchet mechanism (14), and a small single-acting cylinder (16).
By engaging the rack part (16b) of the piston (16a) (an example of an actuator), the vertical feed mechanism (12) is driven by the single-acting cylinder (16) to move the seedling stand (8) Mat-shaped seedlings placed (W)
is configured to send downward by a predetermined amount.

Note that this single-acting cylinder (16) is provided one for each two-row planting system, so a total of three seedling stands (8) are provided, and the restoring operation is performed by the cylinder inside the cylinder. This is done using a coil spring (16c).

As shown in Figure 2, the spare seedling supply device (B) is integrally attached to the upper part of the seedling stand (8), and a maximum of three mat-shaped seedlings (W) are stored at each planting stage. Seedling scooping board (17)
It is configured so that it can be held in the vertical position when placed on the machine, and it is also configured to automatically replenish seedlings during work.

To give an overview of this spare seedling supply device (B), the lowermost seedling holder (SO) has front and rear wheels (18a) that operate in synchronization with the vertical feeding mechanism (12).

(18b) A seedling feeding mechanism (18) consisting of (18c) is provided, and the middle seedling holder (Sl) is supported so as to be swingable around the horizontal first axis (Pl). a first swinging member (19) that is
The upper seedling holding section (S2
) also includes a second swinging member (21) supported swingably around the second axis (P2) and a second member (21
) to restrict the downward and ＼ swinging, and to release the restriction.
The first and second swing members (19) and (21) support the mat-shaped seedlings (1!l) together with the seedling scooping plate (17).

As shown in Fig. 2, a roller (23) is arranged between the upper part of the seedling stand (8) and the preliminary seedling supply device (B), and the wheel (23) at the upper part of the vertical feeding mechanism (12) 12a), the roller (23), and the wheel (18b) at the rear of the seedling feeding mechanism (18) are interlocked by a chain (24) wound around a sprocket provided in each. In addition, as shown in Fig. 3, the seedling scooping board (17) has
An opening (17a) is formed through which the bell (18c) of the seedling feeding mechanism (18) is inserted.

As shown in Fig. 2, the ON operation is performed by contact with the mat-like seedlings at the position overlapping with the roller (23) and the position overlapping with the vertical feed mechanism (12) when viewed from the side. 1st
switch (Sl!11) and second switch (SW2
), and as shown in FIG. 1, the solenoid valve (25) for the single-acting cylinder (16>
) (an example of a control means), and this control device (26) includes a start switch (SWD) and
A system is formed so that signals from the first and second switches (SWI) (S112) are manually input.

Moreover, in this seedling planting device (A), the first and second switches (S
T! 11), (SW2) The distance between each detection position is set slightly larger than the -branch of the mat-shaped seedling (W),
The feeding of the matted seedlings (tt+) to the seedling stand (8) by the control device (26) before the start of work is performed as follows.

In other words, when the start switch (SlliO) is turned ON with the mat-shaped seedlings (S) placed on the seedling holder (SO) as shown in Figure 4 (A), the solenoid valve (2)
5) Seedling feeding mechanism (18) by continuous intermittent operation
keep it running. Incidentally, this state is expressed as shown in FIG. 4 (11).

Next, as shown in Figure 4 (c), mat-shaped seedlings (1!+)
When it reaches the position where the first switch (Sllll) is turned off, the feeding operation is stopped and the seedling holder (
When a mat-shaped seedling (W) is artificially placed on the seedling holder (So), the first switch (S
WI) detects the placement of the seedling, and the control means (26) operates the seedling feeding mechanism (18) again.

Next, as shown in Figure 4 (d), the mat-shaped seedlings (W) are
When the switch (SW2) is turned ON1, the feed operation is temporarily stopped and the operator presses the start switch (SIITO).
By turning on the solenoid valve (25) again, the solenoid valve (25) is operated intermittently a preset number of times to send the matted seedlings (1~) downward by the distance (D) shown in Figure 4 (d) and then stop. . The state in which the seedlings are sent in this way is shown in FIG. 4 (e), and when this state is reached, the seedling planting operation becomes possible.

Incidentally, during the seedling planting work, as the number of matted seedlings (W) decreases, as shown in Figure 4 (C), when the first switch (SWI) switches to the FF state, the When the restriction is released by operating the first solenoid (20) or the second solenoid (22), the first swing member (
19), or the second swinging member (21) is swung downward by its own weight, and the preliminary seedling replenishing device (B ) can automatically replenish mat-shaped seedlings (W).

Also, a spare seedling supply bag! In order to ensure that the mat-shaped seedlings (W) from the seedling feeding mechanism (18) in (B) are sent to the seedling tray (8), the belt of the seedling feeding mechanism (18) is attached as shown in FIG. At the timing before the mat-like seedlings (IV) are separated from the bell of the vertical feed mechanism (12) (12c)
The distance between the mat-like seedlings (W) is set so that the mat-like seedlings (W) come into contact with each other.

The vertical feeding mechanism (12) is originally operated every time the seedling tray (8) reaches the left and right stroke ends to feed the matted seedlings (1!L) downward. As shown in FIGS. 1 and 2, the structure for this purpose is a pin (27a) of a constantly rotating crank arm (27) placed on the left and right sides of the transmission case (5), and the movable frame (10). and a limit switch (28) that detects the swinging of this arm (28).
9) and a one-shot multi-by-break (30) that outputs an ON signal for a preset time based on the signal from this limit switch (29), and the seedling stand (8) is placed at the left and right stroke ends. When it reaches the pin (2
Since the arm (28) swings due to the contact of 7a),
A solenoid valve (25) is activated by a signal from the vibrator (30).
is operated so that pressure oil from the hydraulic pump (31) is sent to each single-acting cylinder (16).

In addition, in this vertical feed system, as shown in Figure 1, three single-acting cylinders (16) are provided in parallel by a branch of a single oil passage (33), so during operation, the pressure oil is under no load. The single-acting cylinder (16) on the light side of
) Even if there is a difference in the amount of seedlings removed, matted seedlings (W)
can be sent easily. Furthermore, a relief valve (34) provided in the oil path (33) from the hydraulic pump (31)
The IJ leaf pressure of ) is set to such an extent that no excessive load is applied to the matted seedling (W) even when the matted seedling (W) is in contact with the sliding rail (11).

[Another example]

In addition to the embodiments described above, the present invention also includes, for example, as shown in FIG. 6, a limit switch (29) for detecting the actuation timing of the vertical feed mechanism (12) is arranged so as to be in direct contact with the moving frame (10). It's okay.

Further, the present invention can be implemented in various ways, such as by constructing the vertical feed mechanism with an electric motor or an electromagnetic solenoid, and by providing the control means with a microprocessor, or with elements such as logic gates and comparators.

Further, in the present invention, it is also possible to mechanically configure a system for feeding seedlings every time the seedling stand reaches the stroke end, and to configure only the system for feeding seedlings before starting work as in the embodiment.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling planting device of the rice transplanter according to the present invention, FIG. 1 is a diagram showing the control system and drive system of the vertical feed mechanism, and FIG. 2 is a diagram showing the seedling planting device and the preliminary seedling supply device. Partially cutaway side view, Figure 3 is a plan view of the seedling scooping board, Figures 4 (a) and (b)
, (c), (d), and (e) are side views showing the continuous operation of feeding seedlings before the start of work, Fig. 4 (f) is a side view showing the operation of replenishing seedlings during the work, and Fig. 5 6 is a side view of the rear part of the rice transplanter, and FIG. 6 is a plan view showing another embodiment of the arrangement of limit switches for vertical feed control. (7)... Planting mechanism, (8)... Seedling stand, (12)... Vertical feed mechanism, (16)...
... Actuator, (26) ... Control means, (Ill) ... Mat-shaped seedling.

Claims (1)

[Claims] While reciprocating the seedling platform (8) in the horizontal direction, seedlings are cut out one by one from the lower edge of the mat-shaped seedlings (W) placed on the seedling platform (8) and planted in the field. Attaching mechanism (7)
, and a rice transplanter comprising a vertical feed mechanism (12) that feeds the placed mat-like seedlings (W) downward by a predetermined amount every time the seedling table (8) reaches the stroke end in the horizontal direction. The seedling planting device is provided with an actuator (16) for driving the vertical feed mechanism (12), and
At a position before the seedling platform (8) reaches the stroke end, the mat-shaped seedlings (
A seedling planting device for a rice transplanter, comprising a control means (26) for controlling an actuator (16) to send W) downward by the predetermined amount or more by manual operation.