JPH0112565Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a soil covering device for a flooded direct sowing machine, which improves soil covering action and improves straightness.

There is a direct flooding machine that has the function of cutting a groove in the paddy field after puddling, sowing paddy into the groove, and covering it with soil. This type of flooded direct seeding machine generally uses a flat plate-shaped soil covering plate, but since it is a paddy field, the soil tends to escape to the sides, making it impossible to securely cover the rice with soil.
In addition, flat earth covering plates have the disadvantage that if there is play in the joints, they will meander unstably from side to side due to the influence of soil flow, resulting in poor appearance after work.

For this reason, as disclosed in Japanese Utility Model Application Publication No. 54-3419, a cover plate (wing) is attached to the bottom of the rear part of the sled in a figure-eight shape that is narrower at the rear than at the front.
There is a technique that allows the soil to be concentrated in the center.

However, although it is possible to collect soil in the center with this conventional technology, since the soil is collected on a flat plate (horizontal surface), it is difficult to collect soil depending on the amount of soil, and the sled floats up. Moreover, since the straight-line stability was unstable, meandering had a negative impact on soil collection.

The present invention uses the following technical measures to solve the above-mentioned problems in a flooded direct sowing machine that is equipped with a soil cover plate on the bottom that moves the soil toward the center at the rear of the sowing section. ing.

That is, in the present invention, the bottom surface of the soil covering board has a portion that is sloped forward in the direction of travel, and the soil covering board is provided on the bottom surface so that the rear side in the direction of travel penetrates deeply into the soil. On the left and right sides of the earth mooring board, plate-shaped rectilinear wings that bite deeper into the soil than the earth mooring board are provided on the earth covering board, and the earth mooring board and the straight advancing wings are wrapped in front and back in the direction of movement, and the earth mooring board is It is characterized by the rear end of the straight wing being positioned further back than the rear end.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. In FIG. 1, reference numeral 1 denotes a mobile body, which has a handle 2 at the rear. Reference numeral 3 denotes drive wheels, and there are a pair of left and right drive wheels on both sides of the mobile body 1, and each of the drive wheels 3 is supported via a transmission case 4 so as to be vertically adjustable.
5 is a float attached to the lower abdomen of the mobile body 1. Reference numeral 6 denotes a horizontal frame laterally attached to the rear of the mobile body 1, and a plurality of seeding devices 7 are attached to the horizontal frame 6 at equal intervals in the lateral direction. Each seeding device 7 is composed of a hopper 8, a feeding box 9, a float 10, a groove cutting plate 11, a soil covering plate 12, and the like.
The hopper 8 and the feeding box 9 are attached to a mounting bracket 13 fixed to the horizontal frame 6, and the feeding box 9 has a feeding roll 14 and a dropping tube 15, and the paddy from the hopper 8 is fed out in fixed amounts from the falling tube 15. Configured to be dropped. The float 10 is supported by a fixed member 18 of the mounting bracket 13 via a movable bracket 16 and a parallel link mechanism 17 so as to be able to move up and down.
And it is urged downward by the bullet lowering mechanism 19.
The upper end of the rod 20 of each bullet lowering mechanism 19 is inserted into and supported by each spring receiving arm 22 fixed to a horizontal shaft 21. Further, the horizontal shaft 21 is supported by a bearing stand 23 on each mounting bracket 13, and an arm 24 is fixed in the middle thereof.
4 is connected to a float pressure adjustment lever 26 on the mobile body 1 side via a push-pull wire 25. As shown in FIG. 2, the adjustment lever 26 is swingable back and forth around a support shaft 29 along the guide groove 28 of the guide plate 22, and also engages with a large number of engaging portions 30 formed on one side edge of the guide groove 28. It is said that it can be selectively engaged and disengaged. The float 10 has a notch 31 at the center of the rear, and the groove plate 11 is positioned in the notch 31.
is located. The groove cutting plate 11 is configured to cut a groove in the ground and guide the paddy from the falling tube 15 into the groove. Note that on the bottom surface of the float 10, an embedded board 32 made of grass or the like is provided in front of the groove cutting board 11. As shown in FIGS. 3 to 5, the covering plate 12 has a main body 33 of the covering plate, with a guide part 34 in the shape of a raised front, and a bent part 35 in the rear part. Hole 37 formed
It is latched to a hook-shaped connecting tool 36 via the holder so as to be freely movable vertically and horizontally. The main body 33 of the soil covering plate has a pair of rectilinear wings 38 formed by bending both edges downward.
is formed, and an earthen board 39 is attached to the lower surface. The earthen board 39 has a pair of left and right earthen parts 40.
, and is configured such that the gap between the dome portions 40 becomes narrower as it moves toward the rear, and the dome board 3
9 is designed so that its rear side in the direction of movement goes deep into the soil, and plate-shaped rectilinear wings 38 on both left and right sides of this earthen board 39
is shaped to dig deeper into the soil than the earthen board 39,
Further, the front end of the straight wing 38 is located halfway in the direction of movement of the earth mooring board 39, and the two are wrapped at the front and back, and the rear end of the straight wing 38 is located further back than the rear end of the earth mooring board 39. . Reference numeral 41 denotes a mounting member for mounting the connector 36, which is fixed to the foot 10 in a U-shape so as to straddle the notch 37. 42 is a bullet lowering mechanism that urges the soil cover plate 12 downward;
3. It has a spring 44, the lower end of which is pivotally supported by a support shaft 46 on a bracket 45 on the soil cover plate 12, and the upper end is inserted and supported on a bracket 47 on the mounting member 41.

In the above configuration, when directly sowing paddy, the floats 5 and 10 may be grounded on the ground surface and moved forward by driving the drive wheels 3. That is, when the float 10 slides along the ground surface, the embedded plate 32
The grass etc. is buried in the ground, and the groove cutting board 11 cuts a groove in the trace. On the other hand, the feed roll 14 feeds out the paddy in the hopper 8 in fixed quantities and drops it from the drop tube 15, so that the paddy falls sequentially into the groove after cutting. Then, the soil covering plate 12 covers the trench after sowing and compacts the soil appropriately. At this time, since the bottom surface of the soil covering plate 12 is sloped upward in the front, it gives the soil a compacting effect according to the amount of soil, and also provides a soil covering plate 39 on the bottom surface with a large intrusion on the rear side to cover the soil. The soil below the board 12 can be prevented from escaping to both sides, and even though it is a paddy field, it can be reliably covered with soil. In addition, plate-shaped straight-advance wings 38 that penetrate deeper into the soil than the earth-covering board 39 are provided on both left and right sides of the earth-covering board 39, so there is no unstable meandering of the earth-covering board 12, and the straight-advancement is improved. is very good.
At this time, since the rear end of the straight wing 38 is located behind the rear end of the soil cover plate 39, even if the earth is collected and released, the straight wing 38 on both the left and right sides ensures straight motion and the soil cover plate 12 is Not only does this reliably prevent meandering, but since the straight wing 38 and the mooring board 39 are wrapped in the front and back, the front-to-back length is shortened, which improves the turning angle when turning. Therefore, even when driving while turning in a deformed field, etc., the soil covering plate 12
Due to the free movement of the connecting portion at the front end, the soil covering plate 12 is not laterally removed from the groove, as the earth covering plate 12 is gently bent while maintaining a straight forward state.

The float pressure with which the float 10 contacts the ground can be arbitrarily adjusted using the adjustment lever 26. Operating the adjustment lever 26 in the direction of the arrow a decreases the pressure, and operating the adjustment lever 26 in the direction of the arrow b increases the pressure. Therefore, the float pressure suitable for the soil hardness can be set. In this case, all the float pressures are changed by the adjustment lever 26, but in order to adjust them individually, it is sufficient to provide each of the seeding devices 7 independently.

The mobile body 1 may be a tractor.

The present invention is as described above and has the following advantages.

Since the front part of the bottom of the soil covering plate has an upwardly sloping part, it is possible to gradually apply a suppressing action according to the amount of soil. Since the soil is collected by installing boarding boards, it is possible to reliably cover the soil according to the amount of soil, even in paddy fields, by gradually applying a compaction effect and collecting the soil.

In addition, plate-shaped straight blades that penetrate deeper into the soil are installed on both the left and right sides of the earthen board, so the straight blades prevent the soil that has escaped from the earthen board from escaping any further, causing it to meander. Stable straightness can be ensured without any friction.

Furthermore, since the earth mooring board and the straight wing are wrapped in the front and back, the longitudinal length can be shortened and good turning performance on headlands etc. can be ensured. Since the end is located at the rear, it is possible to ensure straight travel even after being released by the earthen board, and it is possible to reliably prevent meandering.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a side view of the entire device, Fig. 2 is a plan view of the adjustment lever section, Fig. 3 is a side view of the soil covering section, and Fig. 4 is a sectional rear view of the same. ,
FIG. 5 is a bottom view of the same. DESCRIPTION OF SYMBOLS 1... Mobile body, 7... Seeding device, 11... Grooving plate, 12... Soil covering plate, 38... Straight-advance wing, 39...
...Earth board.

Claims (1)

[Scope of Claim for Utility Model Registration] In a flooded direct sowing machine equipped with a soil cover plate at the rear of the sowing section that has a soil board on the bottom surface that gathers the soil toward the center, in the front part of the bottom of the soil cover plate in the direction of propagation. It has a part that slopes upward in the front, and the earthen board is installed on the bottom surface so that the rear side in the direction of travel goes deeper into the soil, and on both left and right sides of the earthen board, there are sections that are deeper into the soil than the earthen board. A plate-shaped rectilinear blade that bites into the earth covering plate is provided on the earth covering plate, and the earth covering plate and the rectilinear blade are wrapped at the front and rear in the traveling direction, and the rear end of the straight traveling blade is positioned rearward than the rear end of the earth covering plate. A soil covering device for a flooded direct sowing machine, which is characterized by: