JPH0242906A - 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 involves cutting out mat-shaped seedlings placed on a seedling stand that moves back and forth in the horizontal direction one by one using a planting mechanism and planting them in a field. In addition, regarding the seedling planting device of the rice transplanter, which is configured to send matted seedlings to the planting mechanism side each time the seedling platform reaches the end of reciprocating movement, in detail, before starting work, the seedling platform is Regarding techniques for placing seedlings on.

[Conventional technology]

Taking a riding-type rice transplanter as an example, in a riding-type rice transplanter, a seedling planting device is placed at the rear of the machine, and when placing seedlings on a seedling stand before starting work, conventionally A worker is feeding seedlings from behind the table (references not listed).

That is, the seedling stand has a vertical feed mechanism that sends the seedlings downward, a seedling remaining amount sensor that detects when the remaining amount of seedlings has decreased from a predetermined amount by contact with the seedlings, and a seedling that prevents the seedlings from floating up. Because a presser rod is provided, for example, even if the seedlings are slid from the top of the seedling rack, they cannot be sent all the way to the bottom of the seedling rack. Seedlings were placed there.

[Problem to be solved by the invention]

However, when trying to place seedlings from behind the seedling stand in a soft field, the footing is unstable and the work can be time-consuming, so there is room for improvement.

Therefore, a method can be considered in which the operator in the driver's seat slides the seedlings from the top of the seedling tray to feed the seedlings, and at the same time operates the vertical feeding mechanism with an actuator to feed the seedlings to the bottom end of the seedling tray. However, if you send in the next seedling after sending in the seedlings in this way, the next seedling will not slide sufficiently, creating gaps between the seedlings and causing missing plants at the time of planting. It may also multiply.

An object of the present invention is to construct a seedling planting device that supplies seedlings from the upper part of a seedling stand and that makes it difficult to create gaps between the seedlings, through reasonable modification.

[Means to solve the problem]

The present invention is characterized by setting the replenishment position of mat-shaped seedlings on the seedling stand before starting work, and providing a sensor mechanism for determining the presence or absence of mat-shaped seedlings at this replenishment position. When detecting this, the seedling feeding device continues to feed the matted seedlings to the planting mechanism.
The present invention includes a control means for stopping the operation of the seedling feeding device at the timing when the sensor mechanism no longer detects the presence of matted seedlings, and its functions and effects are as follows.

[For production]

If the above characteristics are configured as shown in FIG. 1, for example, the replenishment position is set so that the end of the mat-shaped seedling (II1) is located at the upper end of the seedling stand (9). If mat-like seedlings (1'l) are present in
The seedling feeding device (C) continues to feed the matted seedlings (W), and
If the matted seedlings (W) are sent out from the replenishment position, the operation of the seedling feeding device (C) will stop when the matted seedlings (II1) no longer exist at the replenishment position. By simply placing the mat-like seedlings (W) on the position, the seedlings can be placed in close contact with each other.

〔Effect of the invention〕

Therefore, even if the seedlings are sent from the top of the seedling stand to the seedling stand, there is no gap between the seedlings by providing a seedling feeding mechanism and a control means, and by setting the position appropriately and installing a sensor mechanism. A seedling feeding device has been constructed that is difficult to form and is capable of feeding seedlings smoothly.

〔Example〕

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

As shown in Fig. 3, a seedling planting device (A) is attached 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. A planting mechanism (7) having a pair of rotating cases (7a) and planting arms (7b) provided on each side of each case (6), and a chain case (6) arranged horizontally on the upper surface of each. The sliding rail (8) is supported to be slidable laterally with respect to the sliding rail (8), and is moved laterally by a moving force from a screw shaft (not shown) installed inside the transmission case (5). Seedling stand for 6 rows that moves back and forth in the direction (
9) and three soil leveling flows) (10), and furthermore, a preliminary seedling supply device (B) is provided above the seedling stand (9).

In addition, as shown in Figure 1, each row is placed on the seedling stand (9).
A vertical feeding mechanism (11) is provided with a belt with protrusions (llc) wound around the upper and lower wheels (lla) and (llb), and a roller for feeding seedlings ( 1
2), and the lower part of the spare seedling supply device (B) is equipped with front and rear wheels (13a), (13b) and belts (13c).
In this embodiment, the vertical feeding mechanism (11), roller (12), and feeding mechanism (13) are collectively referred to as a seedling feeding device (C). These are interlocked by an endless chain (14) and driven synchronously.

As shown in FIG. 1, a pinion gear (17) is fitted onto the hexagonal shaft (15) that supports the lower wheel body (llb) of the vertical feed mechanism (11) via a ratchet mechanism (16). A rack part (18a) that engages with this pinion gear (17)
The vertical feed mechanism (11) and
The roller (12) and the delivery mechanism (13) are activated.

Moreover, this single-acting cylinder (16) operates reciprocally once every time the seedling tray (9) reaches the end of its horizontal stroke, and removes the mat-shaped seedlings (one seedling) placed on the seedling tray (9). ) is configured to send a predetermined amount of seedlings downward (to the side of the planting mechanism (7)), and is also used to feed mat-shaped seedlings (W) when feeding them to the seedling stand (9) before starting work. It will be done.

As shown in FIG. 1, a control device (2) for controlling a solenoid valve (19) that supplies pressure oil to a single-acting cylinder (18)
0) (an example of a control means) is provided, and this control device (
20), a signal from the start switch (SIIlO), a signal from the first switch (SW1) (an example of a sensor mechanism) that determines the presence or absence of seedlings on the roller from the attitude of the swinging piece (Yl), and a vertical The signal from the second switch (Sl'12) that determines the presence or absence of seedlings in the middle part of the feeding mechanism (11) from the attitude of the swinging piece (Y2) is manually operated, and in this seedling planting device (A) 1. Second switch (SW1), (
SW2) The distance of each detection position is − of the mat-shaped seedling (W).
It is set slightly larger than the number of sheets, and the first switch (
A space is secured on the upper side of the first switch (S191) in which mat-shaped seedlings (1!1) can be placed, and by placing the mat-shaped seedlings (W) in this space, the first switch (S
W1) can be made ONN honorable mention.

This space is the replenishment position for mat-shaped seedlings (W), and before starting work, mat-shaped seedlings (W) are placed on the seedling stand (9).
), the control device (20) operates as follows.

In other words, as shown in Figure 4 (a), with the mat-shaped seedlings (W) placed in the supply position, the start switch (SV
! 10) is turned ON, the single-acting cylinder (18)
is operated intermittently to continue sending seedlings.

Next, due to this feeding operation, the mat-like seedling (1ν) turns off the first switch (SW1) as shown in Figure 4 (b).
When the state is reached, the feeding operation is stopped and the seedlings are placed on the replenishing position.When a matted seedling (hair) is artificially placed on the replenishing position, the first switch ( S
W1) detects the placement of seedlings, and the control device (20) again
Activate the seedling feeding device (C).

Next, as shown in Figure 4 (c), the mat-shaped seedlings (W) are
When the switch (SW2) is turned ON, the feed operation is temporarily stopped, and when the operator turns the start switch (SWO) ON again, the control device (20) is moved to the lower end position of the mat-shaped seedling (11). The single-acting cylinder (18) is operated intermittently a preset number of times to feed the seedlings by the distance (D) between the seedling stand and the lower end position of the seedling stand (9), as shown in Fig. 4 (d). In this way, the sending of seedlings is stopped.

To explain the outline of the preliminary seedling replenishing device (B), as shown in FIG. As shown in Fig. 4, the seedling scooping plate (21) is equipped with a feeding mechanism (
Bell of 13) (13c) is inserted through the opening (21a)
is formed.

In addition, in the middle section, there is a first swinging member (22) that is supported so as to be swingable around a horizontal axis (Pl), and the swinging of this first swinging member (22) is regulated and released. 1st solenoid (2
3), a second swinging member (24) supported in the upper part so as to be swingable around the horizontal axis (P2), and regulation of the swinging of the second swinging member (24). , and a second solenoid (25) for releasing.
As shown in FIG. 4(N), when the seedlings are completely fed out from the supply position and the first switch (SW1) reaches the OFF state, the first swinging member (22) is activated by the operation of the first solenoid (23). This first swinging member (
The mat-shaped seedlings (W) from 22) are sent out with no gaps formed between the seedlings, and the first swinging member (2
2) Mat-shaped seedlings (Vll) are completely sent out,
Similarly to the above, even when the first switch (SW1) reaches the OFF state, the mat-shaped seedlings (
W) can be sent out.

As shown in FIG.
The seedling feeding surface of 3) is inclined at an angle of about 25 degrees with respect to the horizontal plane, and a roller (12) is disposed between the two so that seedling feeding can be carried out smoothly.

[Another example]

In addition to the embodiments described above, the present invention may also include, for example, the seedling feeding device (C) may be configured with a large number of rollers, and the actuator for operating the seedling feeding device (C) may be formed with an electric motor, a hydraulic motor, etc. Furthermore, various implementations are possible, such as using a microprocessor as the control device, or using a combination of logic gates, comparators, etc.

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 Description of the Drawings] 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 of the seedling feeding device, and FIG.
A), (111), (C), and (D) are side views showing the continuous operation of feeding the seedlings before starting the work, and Fig. 2 (E) is the side view showing the operation of replenishing the seedlings during the work. Figure 3 is a side view of the rear of the rice transplanter, and Figure 4 is a plan view of the seedling scooping board. (7)... Planting mechanism, (9)... Seedling stand, (20)... Control means, (C)...
... Seedling feeder, (W) ... Mat-shaped seedlings, (S
W1)...Sensor mechanism.

Claims (1)

[Claims] The mat-shaped seedlings (W) placed on the seedling platform (9) that moves back and forth in the horizontal direction are cut out one by one by the planting mechanism (7) and planted in the field, and the seedling platform (9) A seedling planting device for a rice transplanter configured to send a mat-shaped seedling (W) to a planting mechanism (7) every time it reaches a reciprocating end,
The replenishment position of the mat-like seedlings (W) before the start of work is set on the seedling stand (9), and a sensor mechanism (SW1) is provided to determine the presence or absence of the mat-form seedlings (W) at this replenishment position.
When this sensor mechanism (SW1) detects the presence of matted seedlings (W), the seedling feeding device (C) continues to feed the matted seedlings (W) toward the planting mechanism (7). Seedling planting using a rice transplanter, which is equipped with a control means (20) that stops the operation of the seedling feeding device (C) at the timing when the sensor mechanism (SW1) no longer detects the presence of matted seedlings (W). Device.