JPH0242907A - 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 [Field of Industrial Application] The present invention relates to a seedling planting device for a rice transplanter, and more particularly to a technique for placing seedlings on a seedling stand before starting work.

[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 holding rod is provided, for example, even if the seedlings are slid from the top of the seedling rack, they cannot be fed 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 be able to slide sufficiently, creating gaps between the seedlings and causing missing plants at the time of planting. Sometimes it connects.

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. A seedling feeding device is provided to feed the seedlings to the planting mechanism, and a control means is provided to continue feeding the matted seedlings by operating the seedling feeding device only when the sensor mechanism detects the presence of matted seedlings. The end position of the seedling stand on the planting mechanism side so that the mat-like seedlings are completely sent out from the supply position at the timing when the end of the mat-shaped seedlings reaches the end of the seedling stand on the planting mechanism side; The point is that the relative distance to the replenishment position is set, and its functions and effects are as follows.

[For production]

The above characteristics are shown in FIGS. 1 and 2 (a) and (b), for example.

With the configuration shown in (c), the replenishment position is set so that the end of the mat-like seedlings (Ill) is located at the upper end of the seedling stand (9), so the mat-like seedlings are placed at this replenishment position. If (II1) is present, the seedling feeding device (C)
continues to feed the matted seedlings (W), and if the matted seedlings (Ill) are sent out from the supply position, the seedlings will be sent at the timing when there are no matted seedlings (W) at the supply position. Since the operation of the device (C) is stopped, the seedlings can be placed in close contact with each other simply by placing the mat-like seedlings (L'l) on this replenishment position.

Furthermore, even when two mat-shaped seedlings (W) are placed on one row of the seedling stand (9) as shown in Figures 5 (a), (b), (c), and (d), , the seedlings can be placed in close contact with each other, and the distance between the end of the seedling stand (9) on the side of the planting mechanism (7) and the supply position can be adjusted to the length of the mat-like seedling (W). Since it is set to a value equal to or an integral multiple of , it is also possible to place mat-shaped seedlings (W) at the replenishment position at the start of work.

〔Effect of the invention〕

Therefore, by providing a seedling feeding mechanism and a control means, and setting the position of the sensor mechanism, it is possible to feed the seedlings from the top of the seedling stand, and it is difficult to form gaps between the seedlings. A seedling planting device was constructed that does not waste space.

〔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). They are connected together to form a riding-type rice transplanter.

The seedling planting device (A) consists of a transmission case (5) to which power is transmitted from the traveling body (2), three chain cases (6) to which power is transmitted from the transmission cases (5), and these chain cases ( 6) A planting mechanism (7) having a pair of rotating cases (7a) and planting arms (7b) provided on each side, and a sliding mechanism (7) arranged horizontally on the upper surface of each chain case (6). The rail (8) and this sliding rail (
A seedling stand for 6 rows (8) is supported so as to be slidable in the lateral direction, and is reciprocated in the lateral direction by a moving force from a screw shaft (not shown) installed in the transmission case (5). 9) and three land leveling flows) (10),
Furthermore, there is a spare seedling supply device (B) on the top of the seedling stand (9).
is provided.

In addition, as shown in Figure 1, on the seedling stand (9), each row is
Bell N1 with protrusions on the upper and lower wheels (lla) and (llb)
1c) is provided with a vertical feeding mechanism (11) formed by winding the
At the upper end of the seedling stand (9) is a roller (12) for feeding the seedlings.
A feeding mechanism (13) consisting of a belt (13c) wound around front and rear wheels (13a) and (13b) is provided at the lower stage of the spare seedling supply device (B). The vertical feeding mechanism (11), roller (12), and feeding mechanism (13) are collectively referred to as a seedling feeding device (C),
These are synchronously driven by being interlocked and connected by an endless chain (14).

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), the roller luff 12〉, and the feed mechanism (13) are operated by driving a small single-acting cylinder 18) formed in a piston (18b).

Moreover, this single-acting cylinder (18) operates back and forth once every time the seedling tray (9) reaches the end of its stroke in the horizontal direction, and removes the mat-shaped seedlings (W) placed on the seedling tray (9). It is configured to send a predetermined amount of seedlings downward (to the side of the planting mechanism (7)), and also to send the matted seedlings (W) when wiping them before starting work and sending them to the seedling stand (9). used.

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) receives a signal from the start switch (SWO>), a signal from the first switch (Slit) (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 A signal from a second switch (SW2) that determines the presence or absence of seedlings in the middle part of the feeding mechanism (11) is input, and in this seedling planting device (A), the sliding rail (
The distance from 8) to the detection position of the first switch (SW1) is made to match the length of -branch of the mat-like seedling (W),
Also, on the upper side of the first switch (SW1) there are mat-shaped seedlings (
A space is secured in which one sheet of seedlings W) can be placed, and the first switch (SW1) is turned on by placing mat-shaped seedlings (Ll) in this space.

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

In other words, as shown in Figure 2 (a), with the mat-shaped seedlings (1v) placed in the supply position,
When DIO) is turned on, the single-acting cylinder (18)
is operated intermittently to continue sending seedlings.

Next, by this feeding operation, when the mat-shaped seedling (W) is sent to the position where the second switch (SW2) is turned on as shown in Figure 2 (b), the single-acting cylinder is (18), the seedling is sent by a distance (D) shown in FIG. 2 (B) and then stopped as shown in FIG. 2 (C).

To explain the outline of the preliminary seedling supply device (B), mat-shaped seedlings (W) placed on a seedling scooping plate (21) are stored in the supplying position, and this seedling scooping plate (21 ), as shown in Fig. 4, the belt (1
3C) is formed into an opening (21a) through which the opening (21a) is inserted.

In addition, in the middle part, as shown in Fig. 3, there is a horizontal axis (Pl).
), and a first solenoid (23) that regulates and releases the swing of the first swing member (22). The section includes a second swinging member (24) supported so as to be swingable around the horizontal axis (P2), and a second solenoid (24) that regulates and releases the swinging of the second swinging member (24). 25), and during the work, as shown in Figure 2 (d), the seedlings are completely fed out from the supply position and the first switch (SWl
) reaches the OFF state, the first swinging member (22) is swung downward by the operation of the first solenoid (23),
The mat-shaped seedlings (1ν) are sent out from the first swinging member (22) without any gaps being formed between the seedlings,
Moreover, the mat-shaped seedling (1!l) is completely sent out from the first swinging member (22), and the first switch (SW
1) reaches the OFF state, the second swinging member (24
) can send out mat-shaped seedlings (W).

[Another example]

In addition to the above-described embodiments, the present invention can also set the distance from the lower end of the seedling stand to the sensor mechanism to an integral multiple of the mat-like seedlings, such as twice or three times, and set it to twice. In this case, the operation will be as shown in FIG.
As shown in (b), the -th mat-like seedling (ltl) stops once when it is separated from the first switch (SWi), and then restarts when the mat-like seedling ((su) is placed at the replenishment position. It is to start an action.

Furthermore, the present invention can be implemented by configuring the seedling feeding device only with a wheel, or without providing a spare seedling supply device, and the control means can also be implemented by including a microprocessor.

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 of the seedling feeding device, and FIGS. 2 (A), (0), and (C) show the start of work. A side view showing the previous seedling feeding operation in succession, Fig. 2 (d) is a side view showing the seedling replenishment operation in the middle of the operation, Fig. 3 is a side view of the rear of the rice transplanter, and Fig. 4 shows the seedling scooping board. FIG. 5(a) is a plan view of
, (b), (c), and (d) are side views sequentially showing the seedling feeding operation before the start of work in another embodiment. (7)... Planting mechanism, (9)... Seedling stand, (20)... Control means, (C)...
...Seedling feeder, ((su)...matt-like seedlings, (
SW1)...Sensor.

Claims (1)

[Claims] 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.
A seedling feeder (C) is provided at this replenishment position to send the matted seedlings (W) to the planting mechanism (7), and the sensor mechanism (SW1) detects the presence of the matted seedlings (W). The seedling feeding device (C) operates only when the mat-shaped seedlings (W
) is provided, and the mat-shaped seedlings (W) are fed from the replenishing position at the timing when the end of the mat-shaped seedlings (W) reaches the end of the seedling stand (9) on the planting mechanism side.
A seedling planting device for a rice transplanter, in which the relative distance between the end position of a seedling stand (9) on the side of a planting mechanism and a replenishment position is set so that W) is completely sent out.