JP2622208B2 - Seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission shaft for transmitting power from a power take-off shaft of a traveling body to a lateral drive shaft via a transmission case, and branch-transmitting the power from the drive shaft to a plurality of planting transmission cases. The present invention relates to a seedling planting apparatus configured to drive a plurality of planting mechanisms arranged in parallel in a lateral direction.

[0002]

2. Description of the Related Art In the above-described seedling planting apparatus, conventionally, for example, as disclosed in Japanese Utility Model Laid-Open No.
A plurality of planting transmission cases are connected and connected via a pipe-shaped relay frame, and the drive shaft is provided inside each relay frame in a lateral direction.

[0003]

However, in the above-mentioned conventional structure, the spacing between the planting strips is required to be a predetermined width, so that the spacing between the planting transmission cases is widened and the relay frame must be long. In order to obtain a structure that can be shared by models with different numbers of planting strips, and to make it easier to assemble the drive shaft, the relay frame and the planting transmission case are detachably connected. It is common, but since there are multiple connection points in a column along the fuselage lateral direction,
There is a disadvantage that the connection errors at the time of assembly are accumulated and become large. Also, the seedling planting apparatus is provided with a heavy seedling rest, and since this seedling rest reciprocates left and right,
Although the above-described connection frame portion that is long in the lateral direction is easily bent and deformed by one-sided load, as described above,
Since the frame has a joint structure, the frame strength has a certain limit, and there is room for improvement. An object of the present invention is to solve the above-mentioned disadvantages.

[0004]

According to a feature of the present invention, in the seedling plant described at the outset, a lateral frame extending substantially over the entire width in the lateral direction is provided.
The transmission cases are connected together, the planted transmission cases are connected in a cantilever manner, and the drive shaft is arranged on the outer side of the horizontal frame, and power is transmitted from the drive shaft to the planted transmission cases. The point is that it is configured to convey.

[0005]

When assembling, it is only necessary to mechanically connect the transmission case for power transmission from the fuselage side to each of the planting transmission cases with respect to the horizontal frame separately. On one side, a drive shaft can be mounted to form a transmission system. Therefore, since the horizontal frame only mechanically connects and supports the transmission case for power transmission from the fuselage side and each planted transmission case, the horizontal frame has an integral structure over the entire width without being restricted by the shape. However, there is no problem such as assembly of the transmission diameter.

[0006]

As a result, the horizontal frame can be constituted as a strength member having a sufficient supporting strength without any consideration of its shape and the workability of the assembling operation. Since they are generated only at the connection portion, they are not accumulated, and the occurrence of errors can be minimized.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Shows a seedling planting apparatus. This seedling planting apparatus comprises a seedling stand 1 on which seedlings for planting are placed and which reciprocate and reciprocate at a constant stroke. It is provided with two or three grounding floats 3 and the like, and is connected to the rear part of the riding type traveling body (not shown) via a link mechanism 4 so as to be able to move up and down and roll freely around the longitudinal axis Y.

Next, the frame structure of the planting apparatus will be described. As shown in FIG. 2, a transmission case 6 is attached to a pivot boss 5 formed on a rear link 4a of the link mechanism 4 so as to be relatively rotatable around a longitudinal axis Y. The horizontal frame 7 is connected by bolts. The horizontal frame 7 extends in the horizontal direction over substantially the entire width, and is integrally formed by drawing and forming an aluminum material. In the transmission case 6,
Power is transmitted from the traveling machine body via the power take-off shaft 8, and this power is supplied to the lateral feed drive mechanism of the seedling rest 1 and the planting mechanisms 2 installed in the case 6. . On the rear surface side of the horizontal frame 7, three planting transmission cases 9 are bolted and connected in a cantilevered manner toward the rear at predetermined intervals. The planting mechanism 2 is disposed on both the left and right sides of the. That is, in each planted transmission case 9, the transmission chain 11 is wound and stretched over a pair of front and rear sprockets 10a and 10b, and the rotation cases 13 are provided on both left and right sides of the rotation support shaft 12 of the rear sprocket 10b. A planting case 15 provided with planting claws 14 on both sides of the rotating case 13 is attached by a cam mechanism (not shown) provided in the case 13 as the rotating case 13 rotates. The planting mechanism 2 is configured by being mounted so that the tip of the claw 14 moves up and down while drawing a substantially elliptical locus. Then, after the front-rear power of the power take-out shaft 8 is changed to the lateral power via the bevel gear mechanism 16 in the transmission case 6, the power is output to the lateral drive shaft 18 located behind the horizontal frame 7 via the transmission chain 17. It is configured to communicate. As shown in FIG. 3, the drive shaft 18 extends leftward and rightward at an outer portion on the rear side of the horizontal frame 7, and is interlockingly connected to the front sprocket 10 a of each of the planting transmission cases 9 so that torque can be transmitted. I have. In this manner, the power is branched and transmitted from the transmission case 6 to each planting mechanism 2 via the lateral drive shaft 18.

Incidentally, as shown in FIG.
A protection member 19 formed by shaping a bar into a U-shape is inserted and attached to both left and right end portions.
A rectangular engagement member 20 that engages with the inner surface of the horizontal frame 7 is provided. By changing the direction of the protection member 19 and replacing the protection member 19, the protection member 19 protects the laterally outer side of the planting transmission case 9 in a horizontal position. It is provided so as to be freely switchable to an upright posture and a posture that can also be used as a ground stand when detached from the traveling body.

[0010] As described above, the present invention is not limited to the six-row planting type, and may be a seedling planting apparatus of various numbers such as four-row and eight-row plants. The type of planting may be a swinging crank arm type planting mechanism instead of the rotating case type.

[0011] In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling planting apparatus.

FIG. 2 is a plan view of the seedling planting apparatus.

FIG. 3 is a side view of a transmission case mounting portion.

FIG. 4 is a perspective view of a protection member.

[Explanation of symbols]

 2 Planting mechanism 6 Transmission case 7 Horizontal frame 8 Power take-out shaft 9 Planting transmission case 18 Drive shaft

Claims (1)

(57) [Claims] Power is transmitted from a power take-off shaft (8) on the traveling body side to a transverse drive shaft (18) via a transmission case (6), and a plurality of planting transmission cases (18) are transmitted from the drive shaft (18). 9) A seedling planting apparatus configured to branch-transmit power to drive a plurality of planting mechanisms (2) arranged side by side in a lateral direction, the lateral direction extending over substantially the entire width in the lateral direction. A frame (7) is provided, and the transmission case (6) is connected to the horizontal frame (7), and each of the planting transmission cases (9) is connected in a cantilever manner.
8) A seedling planting device arranged outside the horizontal frame (7) so as to transmit power from the drive shaft (18) to each of the planting transmission cases (9).