JPH0438655Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention has steps on each of the left and right lateral sides of the float that protrude laterally outward for leveling the soil in areas corresponding to seedling planting. The present invention relates to a float structure of a rice transplanter in which a groove-making device is installed at a rear position of each stepped portion, and a position corresponding to planting seedlings is set on a rice field portion.

[Conventional technology]

Generally, in rice transplanters equipped with a fertilizing device, a furrower is installed at an appropriate distance next to the area where the seedlings are planted using the planting claws, so that even if the machine moves in a curved direction from side to side, the planting rows are maintained. The spacing between the fertilization row and the fertilization row does not change too much. In this case, there is no particular functional problem whether the furrower is placed on either the left or right side of the area corresponding to seedling planting, and it is usually placed on the lateral outside of the area corresponding to seedling planting where there is space for installation.

In the case of multi-row rice transplanters such as 4-row or 6-row rice transplanters, the points corresponding to each seedling planting (the places where the planting claws pass) are set and arranged at equal intervals, so as mentioned above, use the furrowing device. When placed on the outside of the area corresponding to planting seedlings (on the opposite side from the left and right center position of the float), the distance between the left and right furrowers in one float is wide, and the furrowers on adjacent floats can be cut easily. The intervals between the grooves are narrow, and the groove makers are not placed at equal intervals.

[The problem that the idea aims to solve]

In recent years, research has been progressing on direct seeding cultivation in paddy fields that can omit the seedling raising process, and as part of this research, it is being considered that the fertilizing device of a rice transplanter can also be used as a seeding device.

When fertilization is performed with the above-mentioned arrangement of furrowers, the distance between each fertilization row will be different; however, in the case of fertilization work, the size of each fertilization row is not a particular problem; There is no particular problem even if the intervals are different.

On the other hand, in the case of direct sowing work using the above-mentioned fertilizing device and furrower for sowing, the distance between each crop row is not constant with the conventional configuration. As a result, the sunlight during growth and the application of fertilizers and chemicals are uneven, resulting in poor growth in some areas, and when harvesting is done mechanically with a combine or binder, the harvest may not be achieved properly. A situation may arise.

The present invention is designed to prevent poor crop growth or poor harvesting when the above-mentioned fertilizer applicator and furrower are used for direct sowing, and also to be able to be used for normal planting and fertilizing operations. The purpose is to configure the system so that no problems occur.

[Means to solve the problem]

The feature of the present invention is that the float structure of the rice transplanter as described above is configured as follows. In other words, on each of the left and right lateral sides of the float, there is a stepped section that protrudes laterally outward for leveling the soil in the area corresponding to planting seedlings, and at the rear of each of these left and right stepped sections, the groove-cutting device is installed. Then, we set the area equivalent to planting seedlings on the rice field,
Furthermore, the spacing between the left and right furrowers and the spacing between the left and right seedling planting areas should be set to be the same, and the distance between the left and right furrowers from the left and right center position of the float. , and the distances between the left and right seedling planting positions from the left and right center position of the float are made different on the left and right sides of the float,
On one side of the float, the furrower is located on the lateral outer side of the area corresponding to seedling planting, and on the other side, the furrower is arranged so that the area equivalent to seedling planting is located on the lateral outer side of the groover.

[Effect]

When constructed as described above, for example, as shown in the right float 6 in FIG. float 6 than 10
At the same time, set the rice field part on the side of the left and right center position C of , as a place corresponding to planting seedlings (the position of the planting claw 5), and install a furrowing device on the side of the left and right center position C of the float 6 at the rear of the right stepped part 6A. 10 is placed, and the part of the rice field on the right side outside of this furrower 10 is set as a location corresponding to seedling planting.

For example, in FIG. 2, a float 6' equipped with a pair of planting claws 5 and a groove maker 10 is placed in the center, but ignoring this float 6', the right end constructed as described above is Bring the left groover 10 of the float 6 to the position of the groover 10 of the center float 6'.

In this way, four sets of seedling planting positions (positions of planting claws 5) are arranged at a constant interval P, and four sets of furrowers 10 are arranged at a constant interval P. ′. Therefore, if the floats 6 of the present invention are arranged in this manner, the furrowers will be arranged between fixed fertilization rows in a rice transplanter for multi-row planting such as 4 rows, 6 rows, and 8 rows. .

[Effect of idea]

By arranging furrowers and areas equivalent to planting seedlings on one float as in the present invention, it is possible to arrange not only the areas equivalent to planting seedlings but also the groovers at the same spacing. Summer.

As a result, even when using fertilizer applicators and furrowers for direct sowing, the spacing between rows of each crop remains constant, and sunlight during growth and the distribution of fertilizers and chemicals are uniform at each location, resulting in partial growth. We were able to prevent defects and poor cutting. There are no particular problems in normal fertilization work.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Figure 1 shows the rear of a riding rice transplanter.
A five-row seedling planting device 3 equipped with a fertilizing device 2 is connected to the rear end of a lifting link 1 extending rearward from a traveling body (not shown).

The seedling planting device 3 includes a seedling platform 4 on which pine seedlings W are mounted in parallel and moves back and forth horizontally at a constant stroke, and five sets of planting claws 5 that cut out seedlings one by one from the lower end of the platform and plant them on the rice field... and three floats 6, which support part of the load on the ground and prepare the ground for planting seedlings.
6', 6, and a planting transmission case 7 that drives the seedling stand 4 and the planting claws 5...

The fertilizer application device 2 includes a tank 8 that stores powdery fertilizer, and five sets of feeding devices 9 that feed out fertilizer in fixed amounts from the lower end of the tank 8 using feeding rolls 9a.
and five sets of furrowers 10 that form fertilization grooves on the rice field.
and a fertilizer supply hose 11 that connects each feeding device 9 and each furrower 10.

The feeding rolls 9a... of each feeding device 9... are mounted on a common drive shaft 12 which is horizontally supported through the passage and are driven synchronously, and the driving shaft 12
The drive arm 9b connected to the swing arm 1 is connected to the crank link mechanism 13 for driving the planting nails.
3a via a rod 14. Then, in conjunction with the planting operation, each feeding roll 9a
... is reciprocated at a certain angle, and the feed roll 9
The fertilizer introduced into the recesses 15, 15 on the outer peripheral surface of a,
It is arranged so that it is distributed and dropped back and forth and sent to the hose 11.

Next, the left and right floats 6 (the floats of the present invention) in FIG. 2 will be explained. As shown in FIG. 2, a stepped portion 6A for leveling the soil at a location corresponding to planting seedlings is provided on each of the left and right side portions of the float 6, and a stepped portion 6A for leveling the soil at a location corresponding to seedling planting is provided on each of the left and right side portions of the float 6. Attach the groove cutter 10 to the part of the float 6 closer to the outside,
The part of the rice field closer to the left-right center position C of the float 6 than the furrower 10 is set as a location where seedlings are planted using planting claws 5, which will be described later.

At the rear of the right stepped portion 6A, a groove cutter 10 is placed on a portion of the float 6 closer to the left-right center position C.
is installed, and the part of the rice field on the right side and outside of this trencher 10 is set as a place corresponding to seedling planting. As a result, the distance Q1 from the left-right center position C of the float 6 to the left groove cutter 10, and the left-right center position C
The separation distance Q2 from the groove cutter 10 to the right groove cutter 10 is different (Q1>Q2).

In the center float 6', a concave stepped part 6'A for leveling the ground in the area corresponding to planting seedlings is formed at the center of the rear part of the float 6', and a furrowing device is installed in the part of the float 6' on the left side of the stepped part 6'A. 10 is installed. The rice field area on the right side of this furrower 10 is set as a location where seedlings are planted using planting claws 5, which will be described later.

As shown in FIG. 2, the planting claws 5 provided on the planting transmission case 7 side are connected to the left and right stepped portions 6A of the left and right floats 6, 6, and the stepped portion 6 of the center float 6'. At the rear part of 'A, the planting rows are arranged with a constant spacing P (corresponding to the arrangement spacing), and each planting claw 5... passes on the right side of each furrower 10... The structure is such that seedlings are planted in locations equivalent to those for seedling planting.

Each of the floats 6, 6', and 6 is arranged such that its left-right center position C is slightly deviated laterally (to the left in FIG. 2) from the center of the planting row interval P. As a result, in the left and right floats 6, the separation distance R1 from the left and right center position C to the left seedling planting equivalent position (passing position of the planting claw 5), and the left and right center position C
The separation distance R2 from the position corresponding to seedling planting on the right is different (R1<R2).

With the above structure, the groove makers 10 of each of the floats 6, 6', 6 are arranged in a line horizontally at a certain distance to the left of each planting claw 5...
The total spacing between fertilization rows P′ (corresponding to the spacing between fertilization rows) is
This is the same as the planting row spacing P.

Next, the mounting structure of the groove cutter 10 will be described with respect to the case of the left and right floats 6.

As shown in FIG. 3, a U-shaped mounting bracket 16 is bolted and fixed to the upper surface between the front and rear of the float 6, and the left and right upstanding sides 16a,
16a is pivotally connected to the mounting arms 18, 18 of a fulcrum shaft 17 horizontally supported on the planting transmission case 7, and the float 6 is connected to be able to swing vertically about this pivot point X. The fulcrum shaft 17 can be rotated and fixed as desired, thereby changing the attitude of the mounting arm 18 up and down, changing the height of the float 6 relative to the planting claw 5, and adjusting the planting depth. It is configured as follows.

Support arms 19 made of round pipes are horizontally protruded from the outer surfaces of the upright sides 16a of the mounting fittings 16, and a mounting plate 20 is fixed to the support arms 19. The groove cutter 10 is attached to this mounting plate 20 via an elongated hole 21 and a bolt 22 so that its height can be adjusted freely. The groove cutter 10 has a cross-sectional shape of a V-shape or a U-shape that is open to the rear,
Its front end surface is close to the rear end edge of the mounting plate 20,
or are placed in contact with each other.

From the bottom of the mounting plate 20, the stepped portion 6 of the float 6
A triangular auxiliary trench cutting section 20a that protrudes forward is provided along the lower surface of A, making cuts in the rice field prior to the trench cutting device 10 to facilitate trench trenching, and to remove dirt in the field. The object is pushed and guided by the lower edge of the auxiliary groove making section 20a, and is configured to be buried below the groove making device 10.

The furrow former 10 is adjusted up and down to adjust the buried depth of the fertilizer, but a long hole 21 is set so that the furrow former 10 does not protrude below the lowermost edge of the auxiliary furrow part 20a even in the lowest position.

In addition, the support arm 1 on the side where the furrower 10 is on the inside of the planting claw 5 (on the side of the left-right center position C of the float 6)
The outer end of 9 extends through the mounting plate 20, and the upper end support part 2 of the standing wall plate 23 for mudguard is attached to the protruding end.
4 is inserted and fixed with a pin. Standing wall board 23
is installed from the outer edge of the stepped portion 6A for land leveling to the vicinity of the outer side of the area corresponding to seedling planting, and prevents mud from flowing from the outer edge of the stepped portion 6A to the rear inward of the stepped portion 6A. This prevents the posture of planted seedlings from being disturbed by mudflow.

The rice transplanter with a fertilization device configured as described above has the fertilization row spacing P' of each furrower 10 the same as the planting row spacing P, so it is possible to supply seeds instead of fertilizer. It is possible to sow directly into paddy fields. In this case, since the seeding furrow is generally shallower than the fertilizing furrow, the height of the furrower 10 is adjusted to near the upper limit, and the feeding device 9 is adjusted as follows in order to obtain a highly accurate seed feeding amount.

The outer peripheral surface of the feeding roll 9a is provided with deep recesses 15, 15 for feeding out fertilizer, and shallow recesses 25, 25 in which seeds can be stored in the same posture.
When used for sowing, the feed roll 9a and the drive shaft 12 are temporarily separated, and the recess 25 for seeds is placed in the tank 8.
The roll phase is reversed 180° toward the side and reset to the drive shaft 12.

The delivery roll 9a is configured as follows in order to adjust the amount of fertilizer or seeds delivered. In other words, as shown in FIG.
The first roll member 26 is externally fitted onto the drive shaft 12 consisting of a hexagonal shaft so as to be able to transmit torque, and the first roll member 26 is supported only rotatably with respect to the first roll member 26 and is loosely fitted onto the drive shaft 12. It consists of an adjustment sleeve 27 and a second roll member 28 that is screwed onto the outer periphery of the adjustment sleeve 27 and is adjustable in the axial direction.

Engagement parts that engage with each other in the axial direction are formed in opposing parts of the first and second roll members 26 and 28, and recesses 15 and 25 are formed therebetween, and the adjustment sleeve 27
The second roll member 28 is rotated from the outside,
By adjusting the distance and distance with respect to the first roll member 26, the width of the recesses 15 and 25 in the axial direction is changed, and the amount of delivery is adjusted. and,
A rotation adjustment gear 29 is fixed to a portion of the adjustment sleeve 27 exposed outside the device, and this gear 29
By engaging the stopper 30 with the outer circumferential annular groove 29a, the entire delivery roll 9a is positioned in the axial direction.

On the outside of each feeding device 9, an adjustment operation shaft 32 is provided with a gear 31 that can freely engage with the gear 29 and is fixed to the outer side.
is supported via an unstable switching arm 33 so that its position can be changed freely, and as shown in FIG. By rotating the crank handle 35 provided at the end of the shaft, it is possible to adjust the synchronization of all the delivery rolls 9a. After the adjustment, the unstable switching arm 33 is switched as shown by the imaginary line in the figure to keep the gear 31 apart.

The feed roll 9a is used to switch between fertilization and sowing.
When turning the drive shaft 12 by 180 degrees and replacing it with the drive shaft 12, since the drive shaft 12 is a hexagonal shaft, there is a risk of inserting the phase incorrectly. 34
are formed, respectively, so that installation errors can be easily determined from the outside.

In addition, in the above embodiment, the mounting bracket 1 of the groove making device 10 is
Although the structure is such that the metal fittings 6 also serve as the fulcrum metal fittings of the float 6, it is also possible to construct both metal fittings separately and fasten them together to the float 6. Furthermore, it goes without saying that the present invention can also be applied to a walking type rice transplanter.

[Brief explanation of the drawing]

The drawings show an embodiment of the float structure of the rice transplanter according to the present invention, FIG. 1 is a side view showing the fertilization device and seedling planting device of the rice transplanter, and FIG. A plan view showing the arrangement; Figure 3 is a perspective view of the float mounting bracket, groove cutter, and standing wall board;
Figure 4 is a longitudinal cross-sectional rear view of the feeding device, and Figure 5 is the 4th
FIG. 6... Float, 6A... Step part for leveling the area equivalent to planting seedlings, 10... Grooving device, P... Distance between the left and right areas equivalent to planting seedlings with respect to the float,
P'... Distance between left and right groovers relative to the float, C... Right and left center position of the float, Q1,
Q2...Each distance from the left and right center position of the float to the left and right trenchers, R1, R2...Each distance from the left and right center position of the float to the left and right seedling planting positions.

Claims (1)

[Scope of utility model registration request] A stepped portion 6A is provided on each of the left and right lateral sides of the float 6, which protrudes laterally outward and is used for leveling the soil at a location corresponding to planting seedlings.
At the rear of each of the left and right step portions 6A, the arrangement position of the groove-making device 10 and the position corresponding to planting seedlings on the rice field are set, and furthermore, the arrangement interval P between the left and right groove-making devices 10 is set. ′ and the arrangement interval P between the left and right seedling planting positions are set to be equal to each other, and the distances Q1, Q2 of the left and right trenchers 10 from the left and right center position C of the float 6, and , the separation distances R1 and R2 of the left and right positions corresponding to seedling planting from the left and right center position C of the float 6 are made different on the left and right sides of the float 6, and on one side of the float 6, the groove cutter 10 is The float structure of the rice transplanter is arranged so that the part corresponding to seedling planting is located on the lateral outside of a part corresponding to seedling planting, and the part corresponding to seedling planting is located on the lateral outside of the furrower 10 on the other side.