JPS6345167B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rice transplanter equipped with a row spacing adjustment mechanism that allows the planting row spacing to be arbitrarily adjusted even though it is a single machine.

The spacing between planting rows of a rice transplanter is determined by the spacing between adjacent planters, and conventionally, the spacing between rows is usually 280m/m, 300m/m,
There are three types of 330m/m, and the mechanical specifications differ for each row spacing.In particular, since the planter is a moving part that is interlocked with the drive side, it is difficult to change its mounting position. With current rice transplanters, it is not possible to adjust the row spacing. Therefore, it was necessary to purchase separate machines with different specifications for different row spacings. Of course, planting density can be adjusted by changing the spacing between plants, but
Adjusting the distance between plants changes the distance traveled by the planter per operation, and the combination of sprockets and gears must be changed each time, which is difficult and requires a lot of time and skill. There were some important shortcomings.

The present invention has been made based on the above-mentioned circumstances, and the apron is divided into a plurality of blocks so that the interval between the seedling take-out ports can be adjusted wide and narrow, while the pine seedlings on the seedling stand are placed next to each other. The matching side walls are configured to be expandable in the width direction, and the planter is attached to the planter shaft such that it can be slid and fixed in the axial direction of the planter shaft in a manner that corresponds to the position of the seedling outlet. The distance between the mounting position of the seedling stand and planter and the seedling outlet of the apron can be arbitrarily and easily adjusted, and the spacing between planting rows can be adjusted according to the cultivar or the growth conditions of the field, such as good or poor ventilation. The present invention aims to provide a rice transplanter equipped with a row spacing adjustment mechanism that can change the row spacing to the optimum row spacing.

To explain the structure of the present invention with reference to an embodiment shown in the drawings, FIG. 1 shows an overall side view of a rice transplanter. An engine 3 is mounted, and a pair of swing cases 4a, 4 are mounted on both left and right sides of the engine 3.
Wheels 4, 4 for propulsion of the aircraft are respectively supported vertically movably via a shaft, and a seedling stand 6 is placed at the front above a control handle 5 extending diagonally upward from the rear of the aircraft 2. Low back height and left/right reciprocating drive mechanism A
It is constructed so that it can be moved back and forth from side to side. 7
is a planter having a planting claw 7a at its tip, and the planter 7 is disposed in front of and opposite to a seedling take-out port 8a of an apron 8 which is suspended horizontally at the lower end of the seedling stand 6. , the pine seedlings (not shown) placed on the seedling stand 6 are scraped off one by one and successively planted on the rice field. 9 is a drive case, and B is a seedling intermittent feeding mechanism.

FIG. 2 shows the related structure of the left-right reciprocating drive mechanism A and the seedling intermittent feeding mechanism B on the seedling platform 6, in which the power of the engine 3 rotates the shaft 10 via each transmission body. Furthermore, the screw shaft 1 has a spiral groove 12a carved therein through the transmission chain 11.
As the screw shaft 12 rotates, a block 14 fixed to the slide bar 13 is guided by the spiral groove 12a and reciprocates from side to side. is integrally connected to the seedling platform 6 via the brackets 15, 15, so that the seedling platform 6 can reciprocate from side to side integrally with the block 14 and slide bar 13. A left and right reciprocating drive mechanism A for the seedling platform 6 is configured.

Reference numeral 16 denotes a rotating shaft rotatably supported by the brackets 15, 15, and a ratchet 16a is fixed to the rotating shaft 16.
An operating arm 16b is loosely mounted adjacent to 6a via a return spring 16c, and
The feeding roller 16d is fixed so as to be slidable within a predetermined range only in the axial direction via the key 16e, and after the seedling platform 6 reaches the final end of the forward or backward stroke and the final scraping by the planter 7 is completed, The vertical feed drive lever 10a fixed to the shaft 10 comes into contact with the operating arm 16b, and the operating arm 16
In order to forcibly rotate b, the ratchet 16a,
The rotating shaft 16 and the feeding roller 16d rotate integrally to feed out a predetermined amount of pine seedlings on the seedling platform 6 toward the apron 8, and these constitute an intermittent seedling feeding mechanism B. .

The above configuration is almost the same as a conventional rice transplanter, but
In the present invention, the seedling outlet 8a of the apron 8,
The spacing between the seedling stands 6 and the planter 7 can be adjusted to suit the desired row spacing, and the mounting positions of the seedling stand 6 and the planter 7 can be changed in accordance with the set positions of the seedling take-out ports 8a, 8a. It is configured as follows.

That is, first, the apron 8 is divided in advance into a plurality of blocks in the longitudinal direction as shown in FIGS. 3 and 4. For example, as shown in the figure, the block 8', 8' having a notch forming the seedling outlet 8a and the block 8'' having no notch are divided, and these blocks 8', 8', 8'' are connected to each other. It is detachably attached to the apron mounting bracket 8d via the apron mounting bracket 8b and bolt 8c, and several types of spacer blocks 8 of the required dimensions are prepared in advance, and the spacing between the rows is adjusted to l.
When changing from L to L (L>l), block 8',
A spacer block 8 is interposed between 8''.

Note that the method of dividing the apron 8 is not limited to the case shown in FIG. 3A, but may be divided as shown in FIG. 3C or D, for example.

Next, the connecting rising portion of the seedling platform 6, that is, the side wall 6a on the side where the pine seedlings are adjacent to each other, is formed to be expandable and contractible in the width direction. For example, as shown in FIG. 5A, the upper surface of the side wall 6a is formed into a bellows shape. Alternatively, as shown in Figure B, the upper surfaces of the side walls 6a of the adjacent seedling stands 6, 6 may be slidably and fixedly overlapped in the width direction via the elongated holes 6b and bolts 6c. In addition, bracket 15,1
The mounting position of the rotating shaft 16 and slide bar 13 relative to the adjusting nut 13a and the snap pin 1 is
6' (see Fig. 2), the attachment position of the seedling holder 17 to the seedling stand 6 is adjusted to the elongated hole 17a.
By adjusting the mounting bolts 17b and 17b (see FIG. 7), they can be easily changed to correspond to the expansion and contraction of the seedling stand 6.
d moves freely in the axial direction of the rotating shaft 16 following the expansion and contraction operations of the seedling table 6, and its swing to the left and right is restricted by the inner width m of the window hole 18 formed in the bottom of the seedling table 6. (See Figure 2).

Furthermore, as shown in FIG. 6, the planter 7 is constructed such that its mounting position relative to the planter shaft 21 can be arbitrarily changed in the axial direction of the planter shaft 21 by loosening nuts 19 and bolts 20.

Note that if the planter shaft 21 is provided with a scale or the like to indicate the row spacing in advance, the planter 7 can be positioned easily and reliably.

In the above configuration, to explain the case where the planting row spacing is changed from, for example, L shown in FIG. 3A to L shown in FIG. 4A, first, bolt 8
After removing the blocks 8' and 8' from the connecting block 8b, insert spacer blocks 8 and 8 of the required dimensions on both the left and right sides of the block 8'' and assemble the blocks 8' and 8' again. The spacing between the seedling outlets 8a and 8a, that is, the row spacing, is from l to L (l<L).
can be easily changed to

Further, the seedling mounting stand 6 is configured such that its mounting position can be changed freely via brackets 15, 15 and adjustment nuts 13a at both ends of the slide bar 13, and each seedling mounting stand 6, 6 is in a bellows state at the side wall rising portion 6a. Because they are connected so that they can expand and contract in the width direction,
The adjusting nut 13a is adjusted according to the above-mentioned row spacing L, and each seedling mounting stand 6 is positioned at a predetermined position. In this case, it goes without saying that the mounting position of the snap pin 16' may be changed, and the mounting bolt 17b of the seedling holder 17 may be loosened to adjust the mounting position of the bolt 17b relative to the elongated hole 17a.

Next, to adjust the planter 7, loosen the bolts 20 and nuts 19, respectively, and adjust the planter shaft 21 so that the planting claws 7a pass through the seedling outlet 8a of the apron 8.
Adjust the mounting position to the appropriate position.

As described above, the row spacing is changed from L to L, and the apron 8, seedling stand 6, and planter 7
The related operations of the three can be easily performed by simply tightening and untightening the bolts and nuts of each part.

As described above, in the present invention, the pine seedlings on the seedling stand are scraped off one by one by a planter from the seedling outlet of the apron horizontally suspended at the front end in the seedling feeding direction of the seedling stand that moves back and forth from side to side, and then planted on the rice field. In this rice transplanter, the apron is divided into a plurality of blocks in the longitudinal direction so that the distance between the seedling extraction ports can be adjusted wide and narrow, while the side wall of the seedling stand on the side where the pine seedlings are adjacent The rice transplanter is configured to be expandable and contractible in the width direction, and the planter is attached so as to be slidable and fixed in the axial direction of the planter shaft, corresponding to the position of the seedling outlet. The distance between the seedling take-out ports of the apron, which determines the distance between the seedling take-out ports, can be arbitrarily and easily changed, and the mounting positions of the seedling stand and planter can be easily and freely configured to match the spacing between the seedling take-out ports. Adjustment can be made without changing the parts, and seedlings can be planted by selecting the optimum row spacing depending on the variety or growing conditions in the field, such as good or poor ventilation, or the region. This has the effect of greatly increasing the yield per unit planted area.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Figure 1 is a side view of a rice transplanter equipped with the present invention, Figure 2 is a side view of a rice transplanter equipped with the present invention;
The figure is a vertical sectional view showing the related structure of the left-right reciprocating drive mechanism and the intermittent seedling feeding mechanism, Figures 3 A to D are plan views and front views showing the divided structure of the apron, and Figures 4 A and B are Figures 5A and B are perspective views showing the structure of the seedling stand, Figure 6 is a plan view showing the mounting structure of the planter, and Figure 7 shows the main parts. FIG. In the figure, 6 is a seedling stand, 6a is a side wall, 7 is a planter, 8 is an apron, 8a is a seedling outlet, 8' and 8'' are blocks, 8 is a spacer block, and 21 is a planter shaft.

Claims (1)

[Scope of Claims] 1. A planter scrapes the pine seedlings on the seedling stand one by one from the seedling outlet of an apron suspended horizontally at the front end of the seedling stand that moves back and forth from side to side in the direction of seedling feeding, and plants the seedlings on the rice field. In this rice transplanter, the apron is divided into a plurality of blocks in the longitudinal direction so that the distance between the seedling take-out ports can be adjusted wide and narrow, while the side wall of the seedling stand on the side where the pine seedlings are adjacent to each other is What is claimed is: 1. A rice transplanter equipped with a row spacing adjustment mechanism, which is configured to be expandable and contractible in the width direction, and wherein the planter is slidably fixed in the axial direction of a planter shaft so as to correspond to the position of a seedling outlet. 2. A rice transplanter equipped with a row spacing adjustment mechanism as set forth in claim 1, wherein the upper surface of the side wall of the seedling stand is configured in a bellows shape. 3. The apron is divided into a block having a notch serving as a seedling outlet and a block having no notch, and a spacer block of arbitrary length is removably interposed between the blocks. A rice transplanter equipped with a row spacing adjustment mechanism according to claim 1.