JPH0126174Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a submerged direct sowing machine, and its purpose is to prevent pitching during sowing work.

Conventionally, there has been a submerged direct sowing machine equipped with a groove cutting plate at the rear of the float, a sowing mechanism for sowing seeds behind the groove cutting plate, and a covering plate for covering the sown paddy etc. with soil. However, since the float has a fixed size and shape, pitting occurs, especially when sowing seeds in soft soil, making it difficult to perform a good seeding operation.

Therefore, the present invention solves the above problems, and its features include a seeding mechanism,
In a direct flooding machine equipped with a float placed below the seeding mechanism and a soil covering plate placed behind the float, the float has an upper float body and a lower float body joined to each other so as to form a cavity inside. A recess provided in the auxiliary float member is removably fitted into a parting line rib that extends outward from the side surface of the float, and the auxiliary float member is inserted into the parting line rib. are detachably connected, and the lower surface of the float and the lower surface of the auxiliary float member are located in the same plane and connected.

Hereinafter, a first embodiment of the present invention will be described based on the drawings. In FIGS. 1 to 3, 1 is a tractor body, and 2 is a rear wheel. Reference numeral 3 denotes a hydraulic system for lifting and lowering the work machine, which has a pair of left and right lift arms 4. Reference numeral 5 denotes a three-point linkage mechanism, which is comprised of a pair of left and right lower links 6 and a top link 7, and a submerged direct seeding machine 8 is mounted to the rear of the tractor body 1 via the mechanism 5 so as to be movable up and down.

The flooded direct sowing machine 8 consists of a fixed machine frame 9, first and second movable machine frames 10 and 11, and a direct sowing machine main body 12.

The fixed machine frame 9 is attached to the three-point link mechanism 5, and includes a rectangular cylindrical machine frame body 13 installed horizontally, and a pair of left and right lower link attachments protruding forward from both sides of the machine frame body 13. Bracket 14 and machine frame body 13
Top mast 15 erected from the lateral center of
A support bracket 16 and the like protrude downward from the lower surface of the lateral center of the machine frame body 13.
At the lower end of the support bracket 16, a support cylinder 17 extending in the front and back direction is fixed. A pair of left and right first equipment shafts 18 are provided below from the lower surfaces of both sides of the machine frame body 13.

The first movable machine frame 10 is provided so as to be rotatable about a horizontal axis in the front-rear direction with respect to the fixed machine frame 9.
The machine frame body 19 has a horizontally elongated rectangular cross section, and a horizontal shaft 20 protruding forward from the front surface of the lateral center of the machine frame body 19 is relatively rotatable within the support cylinder 17 of the support bracket 16. It has been inserted. Machine frame body 19
A pair of left and right first receiving plates 21 that have a planar shape on the top and bottom and a pair of left and right fixing plates 22 that have a planar shape on the sides project forward from both sides of the front surface. Each first receiving plate 21 has a first equipment shaft 18 attached to the first movable machine frame 10.
A first receiving plate 2 is inserted into each first equipment shaft 18 so as to allow relative rotation with respect to the fixed machine frame 9.
1 and the machine frame main body 13 of the fixed machine frame 9, the bullet 23 interposed in a spring-like manner is wound, so that the relative wobbling of the first movable machine frame 10 with respect to the fixed machine frame 9,
A first stabilizing mechanism 24 is configured to prevent vibration. Further, a vertical shaft 25 is erected from the rear upper surface of the horizontally central portion of the machine frame body 19, and the machine frame body 1
A pair of left and right second receiving plates 26 having a planar shape in the front and rear are erected on both side prevention surfaces of 9 .

The second movable machine frame 11 is provided to the first movable machine frame 10 so as to be relatively rotatable around the vertical axis, and has a rectangular cylindrical frame body 27 installed horizontally.
A cylindrical body 28 that is fitted around the vertical shaft 25 so as to be relatively rotatable is inserted and fixed in the lateral center of the cylindrical body 7 .
Further, a pair of left and right second equipment shafts 29 are protruded forward from the front sides of both sides of the machine frame main body 27, and the second equipment shafts 29 are attached to the second receiving plate 26 of the second movable machine frame 11. The ammunition is inserted into each second equipment shaft 29 so as to allow rotation relative to the first movable machine frame 10, and is interposed in a resilient manner between the second receiving plate 28 and the machine frame body 29. 30 is wound to form a second stabilizing mechanism 31 that prevents rattling and vibration of the second movable machine frame 11 relative to the first movable machine frame 10.

The direct sowing machine main body 12 has the function of cutting a groove, sowing seeds (paddy) in the groove, and covering it with soil.
A pair of left and right holding brackets 3 are attached to the second movable machine frame 11.
It is fixedly installed via 2. The direct seeding machine main body 12 is
It has an equipment case 33 in which a holding bracket 32 is fixed and installed horizontally, a seed tank 34 fixed to the equipment case 33, and a plurality of seeding devices 35 configured in a horizontal direction below the tank 34. . The seeding device 35 includes a feeding device 36 and a float 3.
7, a groove cutting board 38, and a soil covering board 39.

As shown in FIG. 4, the dispensing device 36 constitutes a sowing mechanism for dispensing the seeds in the seed tank 34 in a fixed quantity. Internal case 4
A hopper 41 for guiding seeds from the tank 34 is arranged on the front side of the tank 34. A feeding roll 43 fixed to a horizontal drive shaft 42 is disposed on the rear side of the inner case 40, and feeding recesses 44 are arranged at equal intervals in the circumferential direction on the feeding roll 43. The seeds supplied from the hopper 41 to the feeding recess 44 of the feeding roll 43 via the guide member 45 are fed downward through the release chute 46 formed integrally with the inner case 40 by the rotation of the feeding roll 43, and are sown. be done. The drive shaft 42 is a
It is interlocked and connected to the PTO shaft 47 via an interlocking mechanism, or it is interlocked and connected to a hydraulic motor that is provided in the equipment case 33 and receives pressure oil from the tractor side.

As shown in FIG. 5, the feed roll 43 is
Side rolls 48, 49 on both sides and middle roll 50 in the center
One side roll 48 is fixed to the drive shaft 42 with a roll pin 51 or the like, and the engaged part of the middle roll 50 is connected to the engaging part 52 protruding from the side roll 48. 53 are detachably engaged and rotated together. The other side roll 49 is crimped by fastening bolts 54. In this embodiment, the engaging portion 52 and the engaged portion 53 are screwed together by a male threaded portion and a female threaded portion. Also, each roll 48, 4
The parts 9 and 50 may be made of flexible rubber or plastic, and may be configured to rotate integrally by a fitting structure such as a spline. A plurality of grooves 55 are formed on the outer peripheral surface of the middle roll 50 at equal intervals in the circumferential direction, and the grooves 55 and the rolls 48 and 49 on both sides constitute the feeding recess 44.

The float 37 is located below the feeding device 36, and is supported by the holding bracket 32 via a movable bracket 56, a parallel link mechanism 57, a support bracket 58, and a mounting cylinder 59 so as to be able to move up and down, and is It is urged downward by a mechanism 60. The mounting cylinder 59 is horizontally installed and is fixed to the lower surfaces of both holding brackets 32. Further, the rod 61 of the bullet lowering mechanism 60 is inserted through a receiving plate 62 extending from the holding bracket 32. Further, the float 37 has a concave notch 63 at the rear central portion, and an embedded plate 64 located in front of the notch 63 on the bottom surface of the float 37 in which grass or the like is embedded. Further, the float 37 is composed of a pair of upper and lower float bodies 65 and 66 to form a hollow cavity inside.
66 are joined to each other by adhesive etc., and the float 3
A parting line rib 67 serving as a joint portion is provided on the 7 side surface and extends outward over the entire circumference.

The groove cutting plate 38 is provided on the movable bracket 56 so as to be vertically adjustable.
located within. The groove plate 38 is configured to cut a groove in the ground and guide the seeds from the discharge chute 46 into the groove.

The soil covering plate 39 is located behind the float 37 and has a support stay 68 fixed to the float 37.
The lowering mechanism 69 is pivoted to be vertically movable.
is urged downward by. The soil covering plate 39 has a pair of left and right rectilinear wings 70 formed by bending both side portions downward, and a soil covering plate 71 is attached to the lower surface thereof.

72 is an auxiliary float member located between the float 37 and the soil cover plate 39, and
It is attached to the rear of the 7. Auxiliary float member 7
2, as shown in FIGS. 2 and 3, similarly to the float 37, a pair of upper and lower float members 73 and 74 are provided to form a cavity inside.
and are connected to each other by adhesive or the like. Further, on the front side of the auxiliary float member 72, there is a parting line rib 6 on the rear side of the float 37.
The parting line rib 6 of the float 37 is provided with a recess 75 into which the parting line rib 6 of the float 37 is removably inserted.
7 and the parting line rib 67 on the side of the float 37 and the auxiliary float member 7.
The front end of the second recess 75 is removably fastened to the front end of the second recess 75 by a fastener such as a screw 76. Furthermore, float 37
and the lower surface of the auxiliary float member 72 are configured to be located in the same plane.

The first embodiment of the present invention is constructed as described above, and when directly sowing by flooding in a paddy field, the entire flooding direct sowing machine 8 is lowered and the float 37 is grounded, and the parallel link mechanism 57 The fixing machine frame 9 and the like are suspended by the hydraulic device 3 so that they are substantially parallel to each other, and in this state, the feed rolls 43 of each feed device 36 are driven to rotate in the direction of the arrow. Then, in each seeding device 35, the float 37 slides while following the ground, and the groove cutting plate 38 creates a seeding groove of a predetermined depth, into which the seeds fed out by the feeding device 36 are sent from the discharge chute 46. Sow. After sowing, the seeding trench is covered with soil using a soil covering plate 39.

During the above work, the auxiliary float member 72 is attached to the parting line rib 67 at the rear of the float 37.
Since the concave portions 75 of the auxiliary float members 72 are fitted together and are fastened to each other using fasteners such as screws 76, it is possible to effectively prevent the auxiliary float member 72 from shaking relative to the float 37, resulting in a so-called integrally connected structure. Also, since the lower surfaces of the float 37 and the auxiliary float member 72 are located in the same plane, the float 37 and the auxiliary float member 72
The two slide together and follow the ground, ensuring a large contact area with the ground. Therefore, even on especially soft soil, pitting can be effectively prevented and stability can be achieved. It is possible to carry out seeding work. Further, by preparing auxiliary float members 72 of various sizes and shapes, by replacing the auxiliary float members 72, an optimal ground contact area can be obtained for the soil, and work efficiency can be improved. Further, the auxiliary float member 72 is attached by using the parting line rib 67 when the float 37 is manufactured, and the structure can be simplified.

6 and 7 show a second embodiment, in which the auxiliary float member 77 is formed in a plate shape,
A bifurcated connecting portion 78 connected to the parting line rib 67 of the float 37 is provided at the front end, and is removably connected by screws 79 or the like. Further, a clay board 80 is attached to the lower surface of the auxiliary float member 77 located behind the groove cutting board 38. Therefore, the soil covering plate 39 as in the first embodiment is not required, and the number of parts can be reduced, and the total length of the submerged direct sowing machine 8 can be shortened, making it more compact and improving the traveling workability. Furthermore, as shown in FIG. 8, if the left and right earthen panels 80 are provided with their positions shifted in the front-rear direction, a wide gap can be secured between the two clay panels 80, and grass can be grown between the two clay panels 80. There is no risk of it becoming clogged with plants or stocks. Furthermore, the soil board 80 may be configured to be detachable and replaceable, so that it can be freely adjusted.

Furthermore, as shown in FIGS. 9 to 12,
By preparing various types of medium rolls 83 and 84, such as bucket 81 type and concave hole 82 type, and arranging them so that they can be replaced with the medium roll 50 as appropriate, they can be adapted to the size and shape of various seeds, and can be used for various types of sowing. It can be adapted to the purpose of work and improves the precision of feeding out seeds.

In the present invention, the recess provided in the auxiliary float member is removably fitted into the parting line rib of the float, and the auxiliary float member is removably connected to the parting line rib, and the lower surface of the float is and the lower surface of the auxiliary float member are located in the same plane and are connected, which simplifies the structure and effectively prevents the auxiliary float member from shaking against the float during seeding work. , the structure is such that the float and the auxiliary float member are integrally connected, and both the float and the auxiliary float slide together while following the ground, ensuring a large contact area with the ground, and a soft Even in soil, pitching can be prevented during driving, and the sowing operation can be performed stably.

[Brief explanation of the drawing]

1 is a rear side view of a tractor equipped with a first embodiment of the present invention, FIG. 2 is an enlarged view of FIG. 1 taken along the line, FIG. 3 is an enlarged view of FIG.
The figure is a cross-sectional view of the feeding device in Figure 1, Figure 5 is an enlarged cross-sectional view taken along the line in Figure 4, Figure 6 is a plan view of the main part showing the second embodiment, and Figure 7 is shown in Figure 6--line arrow. An enlarged view, FIG. 8 is a plan view of the main part showing the third embodiment, and FIG.
Figures 12 to 12 show medium rolls of different shapes, Figures 9 and 11 are cross-sectional side views, and Figure 10 is a 9-sided roll.
FIG. 12 is a view taken along the line XII-XII in FIG. 11. 1... Tractor body, 8... Submerged direct seeding machine, 36
... Feeding device, 37 ... Float, 38 ... Grooving plate, 39 ... Soil covering plate, 65 ... Upper float body, 6
6... lower float body, 67... parting line rib, 72... auxiliary float.

Claims (1)

[Scope of utility model registration request] In a flooded direct sowing machine comprising a sowing mechanism 36, a float 37 disposed below the sowing mechanism 36, and a soil covering plate 39 disposed behind the float 37, the float 37 is designed to form a cavity inside. , consisting of an upper float body 65 and a lower float body 66 that are joined to each other, and a parting line rib 67 extending outward from the side surface of the float 37;
The auxiliary float member 72 is removably connected to the parting line rib 67 in a state in which the recess 75 provided in the auxiliary float member 72 is removably fitted, and the lower surface of the float 37 and the auxiliary float member 72 are removably connected to the parting line rib 67. A submerged direct seeding machine characterized by being connected to the lower surface of the machine so as to be located in the same plane.