JPS591444B2 - seedling planting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seedling planting machine, particularly a seedling planting device, which has a compact crank device.
The purpose is to obtain a compact seedling planting device capable of planting even large seedlings.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in Fig. 1, a pair of wheels 7, 7 with lug Ia are provided in the center of the fuselage and have a wheel interval wider than the distance between the wheels.
A hollow float 6 that protrudes to the front and rear of the wheels is provided between the wheels, and an integrated combination of the encoder 1 and the reducer 2 is disposed above the front protrusion of the float, and the rear protrusion has a In order to make the area narrower, a narrow part with steps is provided, and a two-row planting device with a crank-type planting part 5 is installed at the top of the narrow part. A transmission 23.22 connects the wheels 7.7 and the rear planting device, transmitting the power of the engine 1 to the wheels 7.7 via the transmission 23, and then from the wheels 7.7 to the transmission 22. Power is transmitted to the crankshaft 15 of the planting unit 5 via the transmission device 23, and a seedling stand 3 inclined toward the planting device is disposed on these transmission devices 23 and 22.

In addition, in FIGS. 1 and 2, 16 is the rear support arm;
10 is a seedling to be planted, 19 is a throttle lever for changing the engine speed, and 20 is a left and right clutch for freeing the left and right lug wheels when turning, which are attached to the left and right bundles.

21 is an adjustment lever of the seedling transport device.

A conveying section 4 is installed at the rear end of the seedling platform 3 to convey the seedlings with soil, which are mounted on the seedling platform 3 and are grown separately in the seedling box, to the planting section at a constant speed. Furthermore, the planting section 5 is provided as shown in FIGS. 3 and 4.

That is, the crankshaft 15 interlocking with the prime mover 1 is connected to the wheels 7,
A crank link B is fixed to the projecting end of the support arm 16 at the rear of the float 6 in parallel with the 70 wheels, and extends in the front-rear direction of the rice transplanter on an axis I at the tip of the crank link B. The middle part of the planting arm 18 is pivotally supported, and the rear end of the planting arm is pivotally supported on the cuff of the upper end of the fanning link whose lower end is pivotally attached to the shaft protruding from the support arm 16. The length of the front part of the planting arm 18 from A is the length of the rear part, that is, the axis A, which is thicker than the distance between the two axes, and a cutting blade 17 is provided at the tip of the planting part 18, The cutting blade 17 is made to look into the opening 12 with an appropriate dimension shifted from the planting arm 18 in a direction perpendicular to its longitudinal direction in a plan view.

In the above configuration, when the crankshaft 15 of the planting section 5 rotates in response to power transmission from the prime mover 1, the shaft I, which pivotally supports the midway part of the planting arm 18, rotates around the shaft 150, causing the planting The cuff, on which the rear end of the appendage arm 18 is pivoted, swings back and forth between corners 0 in FIG. 3 as the pivot center of the swing link C.

Therefore, the tip of the planting arm 18 moves up and down in proportion to the front length of the planting arm relative to the rear length from the pivot axis A, and moves in an oblong trajectory as a whole. Then, plant the seedlings.

Therefore, by appropriately selecting the angle α of the S-shaped planting arm 18 or the attachment angle β of the cutting blade 17 to the planting arm 18, the seedlings 10 can be cut as shown in the third figure, and the seedlings can be cut. After the analysis, the upper part of the cut part 10a adheres to the inner surface 17a of the cut part, and the cut part is transported to the cultivated soil. After the cutting blade 17 enters the tillage position 8, the downward pushing force of the cutting blade further moves the cut part into the tilled soil. and complete planting.

While the embodiments of the present invention are as described above, the present invention provides a rear end portion of a planting arm extending in the front-rear direction of the rice transplanter on the shaft of the upper end of the fan link whose lower end is pivoted above the rear end portion of the float. At the same time, the middle part of the planting arm is pivoted to the axis of the tip of the crank link, and the length of the front part of the planting arm from the axis of the tip of the crank link is made thicker than the length of the rear part. A cutting blade is provided at the tip of the cutting arm and the planting arm, and the cutting blade is shifted appropriately in a direction perpendicular to the longitudinal direction of the planting arm in plan view, and is inserted into the seedling outlet of the seedling stand. This device performs a series of operations such as cutting, transporting, planting, and retracting the seedlings while the cutting blade moves vertically in a long elliptical trajectory. However, in particular, the length of the front part of the planting arm from the shaft at the tip of the crank link was made larger than the length of the rear part.
Although it is a small crank mechanism, it is possible to move the cutting section up and down by a large amount, which in turn makes it possible to reduce the size and weight of the vertical swing drive section of the planting arm. Therefore, the vertical swing drive unit of the planting section can be placed at a higher position than the field, and the cut section at the tip of the planting arm can be shifted in a direction perpendicular to the longitudinal direction of the planting arm in plan view. Combined with the fact that the seedling leaves hardly touch the base of the planting arm during or after seedling planting, even tall adult seedlings can be planted with almost no damage to their leaves and stems. It is something that can be built.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a side view of a seedling transplanter equipped with the device of the present invention, and Fig. 2 is a plan view thereof (the lower half shows the upper half and the target). (only float shown),
Figure 3 is an enlarged side view of the main parts, Figure 4 is IV-I of Figure 3.
FIG. 5 is an explanatory diagram of the operation of the seedling cutting section.

Claims (1)

[Claims] 1 The rear end of the planting arm extending in the front-rear direction of the rice transplanter is pivoted to the shaft of the upper end of the fan link whose lower end is pivoted above the rear end of the float, and the middle part of the planting arm is connected to the crank link. The length of the front part of the planting arm from the shaft of the tip of the crank link is larger than the length of the rear part, and a cutting blade is provided at the tip of the planting arm,
A seedling planting device characterized in that the cutting blade is appropriately dimensionally shifted from the planting arm in a direction perpendicular to the longitudinal direction of the planting arm in a plan view, and is exposed to a seedling outlet of a seedling mounting stand.