JP2529765B2 - Seedling planting equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling planting device provided so that a plurality of seedling planting nails are sequentially taken out from a seedling stand and planted in the same planting strip. .

[Conventional technology]

As the above-mentioned seedling planting device, conventionally, for example, Shoukaisho 63-
As shown in Japanese Patent No. 92519, a rotating body in which a plurality of planting arms having seedling planting claws are rotatably attached is configured to be rotationally driven around an axis different from the axis of the planting arm rotation. And a gear mechanism for operating the planting arm so as to rotate around the rotating body in association with the rotation of the rotating body.

[Problems to be Solved by the Invention]

In the conventional device, a gear mechanism for operating the implanting arm is required, and further, since it is necessary to form the rotating body in the drive case so that the gear mechanism can be incorporated, it becomes a heavy load. It had a complicated structure.

An object of the present invention is to provide a seedling planting device which is light in weight, has a simple structure, and can perform accurate work.

[Means for solving the problem]

In order to achieve the object, the seedling planting device according to the present invention has the first shaft of a rotating body that supports a plurality of planting arms having a seedling planting claw so that the machine body can be driven and rotated about a first axis center in a lateral direction of the machine body. Each of the planting arms is attached to a plurality of locations deviated from the core so as to be rotatable around a second axis that is parallel or substantially parallel to the first axis, and is used to rotate the planting arm with respect to the rotating body. The machine body is provided with a fixed cam that engages with the arm operation part provided in, and the planting arm pivotally operates with respect to the rotary body as the rotary body rotates, and the seedling planting claws plant seedlings. In a state where it takes up an elliptical rotary motion up and down so as to be taken out from the table and planted in the field, and in which a plurality of the planting arms sequentially plant seedlings in the same planting row as the aircraft runs. The arm operation part of the rotating body The fixed cam is formed so as to be operated in accordance with the movement, and a pair of springs that act intermittently are provided on the arm operation unit, and the plurality of planting arms are in a position to perform a movement for taking out seedlings from the seedling stand. At this time, when one of the pair of springs urges the arm operating portion against the fixed cam to urge the plurality of planting arms in a position to perform a motion of planting seedlings in a field, The arrangement of the pair of springs is set so that the other spring of the pair of springs urges the arm operating portion against the fixed cam.

 Its action and effect are as follows.

[Work]

Each planting arm revolves around the first axis for the rotation operation by the rotating body, and the second cam is rotated around the second axis because of the engaging action of the fixed cam with respect to the arm operation portion and the shape. Rotate with. Due to this rotation of the planting arm, a plurality of seedling planting claws perform a seedling planting motion so that the seedlings are sequentially taken out from the seedling stand and planted in the field as the machine runs.

If engagement interchange occurs between the arm operation part and the fixed cam due to manufacturing of each part or assembly error, etc., when the seedling seedling is taken out from the seedling stand by the planting arm, the engagement interchange is required. In some cases, looseness may occur between the arm operation part and the fixed cam, and the sizes of the seedlings taken out may be uneven. In addition, when the planting arm plants a seedling in a field, the rattling may occur, and the planting posture of the seedling may be uneven. When a spring is applied to the arm operation portion to urge the arm operation portion against the fixed cam, the occurrence of rattling is suppressed, and the occurrence of the above troubles when taking out or planting seedlings can be easily avoided. However, in addition to the position where the planting arm carries out the seedling picking motion and the position where the seedling planting motion is carried out, the position where the planting arm holds the picked seedling and moves downward, and the position where the planting arm finishes planting and moves up. If a spring that constantly acts on the arm operation part is adopted so that the spring presses the arm operation part against the fixed cam even when the arm is on, a relatively large operating resistance due to the strong contact between the arm operation part and the fixed cam. The planting arm will be driven while always receiving. On the other hand, in the case of the present invention, it works when the planting arm is in the position for performing the seedling take-out motion and the position for performing the seedling planting motion, but does not work when in the position for performing the descending motion and the ascending motion. However, by adopting the intermittent action spring, the planting arm carries out the seedling taking-out and the seedling planting while the seedling taking-out failure and the seedling-planting failure due to the engagement interchange are less likely to occur. On the other hand, when the planting arm descends and rises, it can be driven with a relatively small actuation resistance.

〔The invention's effect〕

While simplifying the structure for rotating the planting arm by rotation to a fixed cam, the rotating body can support the planting arm and can be rotated and revolved. Since it is possible to perform a predetermined seedling planting work using the seedling planting claws of the above, a plurality of seedling planting claws can be made relatively lightweight and structurally simple from the aspect of the rotation rotation operation structure of the planting arm and the structure of the rotating body itself. A rice transplanter that can work at high speed by acting on the same planting strip has become advantageous in terms of weight and cost.

Moreover, because of the intermittent action spring, it is possible to obtain an accurate finish where seedlings are taken out and planted according to the set amount or the set posture as much as possible. Moreover, it is possible to minimize the increase in the operating resistance caused by urging the arm operation portion against the fixed cam, and it is possible to drive the motor relatively favorably in terms of the required power.

〔Example〕

 Next, examples will be shown.

As shown in FIG. 4, a planting mechanism consisting of a transmission case is attached to the rear part of the planting machine body (1) by attaching two planting arms (2a) and (2b) to one rotating body (3). Then, the seedling stand (4) is fed to the front part of the planting device body (1) so as to feed the seedlings while being reciprocally moved in the lateral direction of the machine in conjunction with the movement of the planting arms (2a) and (2b) for planting the seedlings. In addition to mounting, the grounding float (5) is attached to the lower part of the planting device body (1) and connected to the rear part of the traveling body (not shown) to configure the seedling planting device to form a riding type rice transplanter. There is.

The planting mechanism is constructed as shown in FIGS.

That is, the rotating body (3) is attached to the planting device body (1) so as to be supported via the rotation support shaft (6) and the bearing (7), and the transmission chain (6) is attached to the rotation support shaft (6). It is configured to be rotationally driven around the first axis (X) in the lateral direction of the machine body by the driving force transmitted via 8).

The two planting arms (2a) and (2b) are separately mounted at two positions off the first axis (X) of the rotating body (3). Both the planting arms (2a) and (2b) are mounted on the rotary body (3) through a bearing (11) on a cylindrical support shaft portion (10) made of a cylindrical shaft which is fixed by rotation to prevent rotation. Is attached to the rotating body (3) around the second shaft core (P ₁ ) or (P ₂ ) of the support shaft portion (10) parallel or substantially parallel to the first shaft core (X). And a mounting shaft (12b) that is configured to rotate by means of a rotary shaft, and is coaxial with the second shaft core (P ₁ ) or (P ₂ ) and penetrates the support shaft portion (10) in a relatively rotatable manner. The planting arm (2a) or (2
b) by attaching to the proximal end of the planting arm (2
Lever type arm operation part (1) provided in a) or (2b)
The rotation arm (2a) or (2b) can be rotated with respect to the rotating body (3) by 2).
A fixed cam (14) provided by connecting a cam forming member (13) to the side surface of the planting device body (1) by bolts is made to act on the arm operation parts (12) of the planting arms (2a) and (2b). There is. As shown in FIG. 1, the fixed cam (14) is slidably inserted in the roller cam follower (12a) of the arm operation part (12), and when viewed in the direction along the first axis (X), the first axis is shown. Since the core (X) is formed in an annular groove shape surrounding the core (X) as shown in FIG. 2, the planting arms (2a) and (2b) are rotated by the rotary body (3a) as the rotary body (3) rotates. 3) revolves around the first axis (X) due to the rotation operation by 3), and further, the fixed cam (14) engages with any arm operation section (12) and the arm operation section ( In order to rotate 12), the planting arms (2a) and (2b) rotate about the second axis (P ₁ ) or (P ₂ ) with respect to the rotating body (3). Configured. That is, the seedling planting claws (15) provided on the planting arms (2a) and (2b) for the revolution and rotation of the planting arms (2a) and (2b) are the planting device bodies (1). In contrast, a circular claw tip locus (T) as shown in Fig. 4 is drawn, and it is rotated up and down to cut one block of seedlings from the mat-like seedlings on the seedling stand (4). , The cutting block seedling is taken out from the take-out port (4a), and the seedlings are moved downward and planted in the field, so that the seedlings can be planted in the field. Planting arm (2
A) and (2b) use the seedling planting claws (15) to plant seedlings in the same planting row one after another.

The planting arms (2a) and (2b) are provided with seedling pushing tools (16). Each seedling pushing tool (16) is configured to slide along the seedling planting claw (15) for sliding the support rod (17) with respect to the planting arm (2a) or (2b), and the planting arm is also provided. When the seedling planting claw (15) picks up seedlings and transports the seedlings, the base end side of the planting claw (15) is operated by the push-out operation cam (18) provided in the base end portion of (2a) or (2b). In the non-acting position located at, the seedling planting claw (15) is configured to perform a seedling pushing operation that slides from the working position to the tip side of the planting claw (15) when planting the seedling.

That is, the push-out operation cam (18) is fixed to the support shaft (10) by being formed as a single component with the support shaft (10), and the rotating bodies (2a) and (2b) of the implant arm (2a) ( The push-out operation cam (18) does not rotate with respect to the rotating body (3) regardless of the rotation of the push-out operation cam (18), and the push-out operation cam (18) rotates as the planting arms (2a) and (2b) rotate. ) Is configured to rotate about the second axis (P ₁ ) or (P ₂ ) with respect to the planting arm (2a) or (2b). And
Since the other end of the swinging link (21), one end of which is connected to the support rod (17), is urged to abut on the peripheral surface of the pushing operation cam (18) by the spring (S), planting is performed. As the arms (2a) and (2b) rotate and the seedling planting claw (15) makes a seedling planting motion, the pushing operation cam (1
8) pushes the swinging link (19) toward the retreat side of the support rod (17) due to its peripheral shape, and swings to operate the seedling pushing tool (1).
6) Retract to the non-acting position, or swing link (1
The seedling pushing tool (16) is pushed by the spring (S) while allowing the swinging operation of the spring (S) on the pushing side of the support rod (17). .

As shown in FIGS. 1 and 2, the cam forming member (13)
Leaf springs (21) or (22) are attached to the two locations.

That is, one leaf spring (21) is the planting arm (2a).
And (2b) When the seedling planting claws (15) take out the seedlings from the seedling stand (4), the cam followers (12a) of the arm operation part (12) are urged against the fixed cam (14). By doing so, the amount of seedlings taken out is made constant. The other leaf spring (22) comes into contact with the base end side portion (12c) when the seedling planting claws (15) of the planting arms (2a) and (2b) come into contact with the base end side portion (12c) and the arm operation part ( By urging the cam follower (12a) of 12) against the fixed cam (14), the posture of planting seedlings is made constant.

Planting arms (2a), (2b) attached to the rotating body (3)
The number may be three or more.

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]

The drawings show an embodiment of a seedling planting apparatus according to the present invention.
The drawing is a cross-sectional view of the planting arm attachment portion, FIG. 2 is a side view of the cam forming member, FIG. 3 is a cross-sectional view of the planting arm, and FIG. 4 is a side view of the whole seedling planting device. (1) …… Airframe, (2a), (2b) …… Planting arm,
(3) …… Rotating body, (12) …… Arm operating part, (14)…
… Fixed cam, (15) …… Seedling planting nails, (21), (22)…
… Spring, (X)… Primary axis, (P ₁ ), (P ₂ )…
... second axis.

Claims (1)

(57) [Claims] 1. A plurality of planting arms (2a), (2b) having seedling planting claws (15), wherein the machine body (1) is the first in the machine body lateral direction.
Rotating body (3) that is rotatably supported around the axis (X).
At a plurality of locations deviated from the first axis (X) of the second axis (P ₁ or
P ₂ ) rotatably attached, and the planting arms (2a), (2b) for pivoting operation of the planting arms (2a), (2b) with respect to the rotating body (3).
b) The machine body (1) is equipped with a fixed cam (14) that engages with the arm operation part (12) of each, and the planting arm (2) is rotated with the rotation of the rotating body (3).
a) and (2b) are rotated with respect to the rotating body (3), and the seedling planting claws (15) take out the seedlings from the seedling stand (4) and plant them in an up and down ellipse so that they can be planted in the field. A plurality of planting arms (2a), (2b) in a state of performing a rotary motion
The fixed cam (14) is formed so as to operate the arm operation part (12) in accordance with the rotation of the rotating body (3) in such a state that the seedlings are sequentially planted on the same planting line as the machine runs. Then, a pair of springs (21) and (22) that act intermittently are provided in the arm operation part (12), and the plurality of planting arms (2a) and (2b) are taken out from the seedling stand (4). One of the pair of springs (21), (22) presses the arm operation part (12) against the fixed cam (14) and urges the arm operation part (12) when the arm is in a position to perform a moving motion. However, when the plurality of planting arms (2a), (2b) are in a position to perform a movement for planting seedlings in the field, the other spring (22) of the pair of springs (21), (22) is Connect the arm operation part (12) to the fixed cam (1
4) A seedling planting device in which the arrangement of the pair of springs (21), (22) is set so that the spring is pressed against the spring.