JP2009232719A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter that smoothly carries out a soil preparation by the surface of soil preparation of floats in a field having a large amount of water, quickly discharges backward muddy water pushed forward by rising parts by right and left muddy water flow paths, reduces an amount of washed away right and left by floats, prevents already planted seedlings from being pushed down by a muddy water flow and performs a planting operation. <P>SOLUTION: In the transplanter having a constitution that a traveling machine body is equipped with a planting apparatus having floats 9 and seedlings are planted in a field surface prepared by the floats 9, the muddy water flow paths 37 for running off muddy water from the front to the surfaces of the floats are arranged at the right and left of the rising parts 38 forming the soil preparation surface at the front parts of the floats 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a transplanter such as a rice transplanter for planting seedlings in a field scene prepared with a float.

Conventionally, in a transplanter equipped with a planting apparatus equipped with a float that slides in contact with a farm scene on a traveling machine body, a through hole is provided in a rising part having a bowl-shaped ground leveling at the front part of the float. It has already been known to guide muddy water to be pushed forward from the front through the through hole to the rear (for example, see Patent Document 1).
JP 2001-178204 A

In the transplanter shown in Patent Document 1, when the rising part of the float moves forward while pushing the muddy water forward, the muddy water is discharged rearward through the through hole from the front. This has the advantage of preventing the seedlings and sowing already planted from being pushed down or swept away by the muddy water. However, since the float has a through hole only in the center of the wide front float part, in a field with a lot of muddy water, the muddy water discharged from one through hole is restricted by the amount of muddy water discharged from one through hole. This is not enough to regulate the flow of water. Further, if the through hole is enlarged for this measure, there is a drawback that the leveling action performed on the front surface of the float is impaired.
In addition, the through hole provided in the center of the float width was accumulated in the shape of a nodule because waste such as straw and weeds mixed in the muddy water was hooked on the leveling body mounting bracket that supports the center part of the float from the aircraft side immediately after drainage. There is a problem that the scraps obstruct the vertical movement of the float performed when adjusting the seedling planting depth.

  In order to solve the above-described problems, the transplanter of the present invention is firstly provided with a planting device 6 having a float 9 in a traveling machine body 2, and transplanting seedlings in a field scene leveled by the float 9. A muddy water channel 37 for allowing muddy water to flow from the front to the upper surface of the float is provided on the left and right of the rising portion 38 that forms the leveling surface 36 at the front of the float 9.

  Second, the muddy water flow path 37 is provided with a flow path lid 45 that can open and close the muddy water flow path 37 and forms the leveling surface 36 when closed.

  The transplanter according to the present invention has the following effects. By providing a muddy water channel that allows muddy water to flow out from the front to the top surface of the float on the left and right of the rising part that forms the leveling surface at the front of the float, the float smoothly levels the ground by leveling the ground in fields with a large amount of water. At the same time, the muddy water that the rising part pushes forward is quickly discharged to the rear by the left and right muddy water flow paths, so the amount of muddy water pushed to the left and right of the float is reduced, and the planted seedlings are prevented from being pushed down by the muddy water flow. Planting work can be done.

  In the muddy water flow path, a flow path lid that forms a leveling surface when closed is provided so that it can be opened and closed, so that in a field with a large amount of water, the float can remove part of the muddy water from the muddy water flow path that is opened by opening the flow path cover. In addition to being able to discharge to the rear, the leveling action can be performed by holding the flow path lid in a leveling posture in a field with a small amount of water.

  An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a passenger rice transplanter (transplanter), which is equipped with an engine 3 covered with a bonnet on the front side of a traveling machine body 2 having a front wheel 1 a and a rear wheel 1 b on the left and right sides, and a control unit 4 is installed in the rear. The planting device 6 is attached to the lifting mechanism 5 of the three-point link system configured at the rear of the machine body. This planting device 6 has a seedling mounting table 6a for tilting the mat seedlings in the front-to-back and low-side directions and placing them in parallel on the left and right, and a plurality of (three in the embodiment) below the seedling mounting table 6a. The planting transmission case 7 is attached to the planting frame 8 in the horizontal direction with a predetermined planting interval. And each planting transmission case 7 is equipped with the rotation planting part 11 which has the planting nail | claw 10 in the both sides of a rear part edge, and has arrange | positioned the float 9 which concerns on this invention below each case.

Further, the transplanter 1 includes a PTO shaft (not shown) of a rear axle case 2a installed at the rear part of the traveling machine body 2, and a planting transmission shaft that is pivotally supported along the planting frame 8 as shown in FIG. Twelve input shafts 13 are connected by a PTO transmission shaft 16 via a universal joint 15 and transmitted.
As shown in FIGS. 11 and 12, the planting frame 8 is configured to transmit the input shaft 13 without difficulty while the downward transmission shaft angle of the PTO transmission shaft 16 is reduced.

  That is, the planting frame 8 in the illustrated example is a combination of the left frame 18, the right frame 19, and the central frame 20, each having the same rectangular cross section, and forming an inverted trapezoidal convex portion 21 at the center of the upper surface, In addition, an inverted trapezoidal dovetail recess 22 that allows the protrusion 21 to be inserted is formed in the central portion of the lower surface. Thereby, with respect to the left and right of the concave portion 22 of the central frame 20, the end portion of the convex portion 21 of the left frame 18 and the convex portion 21 of the right frame 19 is inserted, and both the front and rear surfaces that are flush with each other, Each is connected by a bolt 25 via a connection piece 23.

The planting frame 8 configured as described above attaches and supports the planting transmission case 7 to the rear surfaces of the left frame 18, the right frame 19, and the central frame 20, and the planting transmission shaft 12 on the lower surface side. The shaft is supported so that transmission to each planting transmission case 7 is performed.
Moreover, since the planting frame 8 forms the middle-high space part 26 in the center part of full length, the transmission case 27 which connects the said input shaft 13 and the planting transmission shaft 12 so that transmission is possible is made to face this space part 26. Can be installed.

Accordingly, since the planting frame 8 of the embodiment supports the planting transmission shaft 12 with the transmission case 27 facing the space portion 26, the planting frame 8 is compared with a case where the planting frame 8 is configured by a straight pipe material. Since the installation height of the shaft 13 can be provided higher and close to the lower surface of the central frame 20, the downward transmission shaft angle of the PTO transmission shaft 16 connecting the input shaft 13 to the PTO shaft can be further reduced, and the universal joint 15 can be transmitted without forcibly bending.
Further, since the left frame 18, the right frame 19 and the central frame 20 have the above-mentioned cross-sectional shape, for example, a single columnar member manufactured from an aluminum material by a drawing manufacturing method is cut into respective length units. There is an advantage that the planting frame 8 capable of forming the space portion 26 can be easily manufactured simply by coupling.

  Next, the float 9 and the arrangement structure thereof according to the first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, the float arrangement structure of this transplanter is such that three floats 9 are attached by support link mechanisms 31 to an attachment frame 30 that is attached and supported laterally by a plurality of planting transmission cases 7. Thus, the floats 9 are supported so as to be movable up and down directly below the corresponding planting transmission cases 7.

  As shown in FIGS. 3 to 6, the float 9 has a front front float portion 33 having a wide width and a rear rear float portion 34 having a narrow width, and has a T-shaped float body in plan view. The bottom surface of the front float part 33 and the rear float part 34 is a flat ground surface 35, and a bowl-shaped leveling surface 36 that is gently curved upward is formed in front of the front ground surface 35. A muddy water passage 37 having a shape in which the left and right are partially cut is formed. Also, the three floats 9 in the illustrated example have the same shape, and are manufactured by blow molding with a plastic material.

As a result, when the float 9 slides with the ground contact surface 35 in contact with the field scene and supports the weight of the planting device 6, the float 9 adjusts the field scene with the leveling surface 36 to form a flat sliding surface (planting surface). Finishing, seedlings can be planted by the planting claws 10 on this flat planting surface. At this time, in a farm field with a large amount of water, a part of the muddy water that is pushed forward by the leveling surface 36 is rearranged and discharged from the left and right muddy water flow paths 37 while being discharged.
That is, the float 9 is formed so that the width of the front float portion 33 is wider than the planting width of two adjacent seedlings, and the rear float portion 34 is T-shaped by making the width narrower than the planting width. In the space formed by the float shoulder 39 formed on the left and right of the front float 33 and the side of the rear float 34, the planting claw 10 has a planting position P for planting seedlings. It has established.

Further, as shown in the side views of FIGS. 4 to 6, the float 9 is a high hollow body having a predetermined thickness from the ground surface 35 to the entire front float portion 33 and the center portion of the rear float portion 34. Thin portions 41 are integrally formed from the ground contact surface 35 on the left and right of the rear of the hollow body.
In this shape, a screw hole 40 for attaching the support link mechanism 31 is provided at the center of the width of the float 9. Moreover, since the thin part 41 of the rear float part 34 becomes the vicinity of the draft surface at the time of sliding, when there is much muddy water flow which flows through the said space part, the seedling transplanted to the planting position P through this will flow muddy water. It is suppressed that it is pushed down by.

Next, the muddy water flow path 37 formed on the front left and right of the float 9 will be described. The muddy water passage 37 in the illustrated example has a shape in which a rising portion 38 that forms the leveling surface 36 of the front float portion 33 is notched in a groove shape from the front at an intermediate position between the width center and the outer surface of the front float portion 33, and The notch depth is set to a position that substantially intersects the upper surface of the front float portion 33.
As a result, the muddy water channel 37 is formed in a bilaterally symmetrical position at the front portion of the float 9, so that the front float part 33 passes through the left and right muddy water channels 37, respectively, and a middle rising part 42 and a side rising part each having a leveling surface 36. 43.

As shown in FIGS. 3 and 6, each muddy water channel 37 has a road surface 37a on the side surfaces of the middle rising portion 42, the outer rising portion 43, and the upper surface of the front float portion 33. Guided backward, the muddy water flow is weakened and discharged to the field scene from the float shoulder 39 and the rear end 44 of the high hollow body through the thin portion 41.
As a result, the float 9 that slides in a field with a large amount of water guides part of the muddy water that rises when the leveling surface 36 pushes the muddy water backward from the muddy water flow path 37 through the road surface 37a, and the wide float upper surface. It is possible to discharge through the float shoulder 39 and the float rear end 44 while diffusing and decelerating the water flow.

  The transplanter 1 including the float 9 configured as described above is configured such that the planting device 6 is lowered by the elevating mechanism 5 to install each float 9, and the seedling mounting platform is moved from the PTO shaft through the PTO transmission shaft 16 while running. 10 and the planting claw 10 are driven. As a result, the transplanter 1 transplants seedlings at the planting position P by the planting claws 10 in the field scene where each float 9 is slid and leveled.

In such a planting operation, the ground is leveled by the float 9 provided with the muddy water flow path 37 on the left and right of the middle part of the rising portion 38 formed with the leveling ground 36, so that the float that slides in a field scene with a large amount of water. 9, the muddy water that is pushed up by the rising portion 38 is guided rearward from the left and right muddy water flow paths 37, diffused on the upper surface of the wide float and discharged while decelerating the water flow. In addition, it is possible to reliably prevent the seedlings and sowing already planted from being pushed down and pushed away by the muddy water flow.
In addition, since the plurality of muddy water channels 37 are provided separately on the right and left sides, it is possible to prevent scraps such as slag from being caught on the mounting brackets such as the support link mechanism 31 and to prevent the float 9 from moving up and down for a long time. The planting work can be continued smoothly.

  Next, another embodiment of the present invention will be described with reference to FIGS. In addition, description is abbreviate | omitted about the structure and effect | action similar to the thing of the said embodiment. First, FIG. 7 is related to 2nd Embodiment and has shown the arrangement | positioning structure of the float with which the planting apparatus 6 which plants the seedlings for five strips is provided. In this case, in order to mount and support the three floats 9 on the mounting frame 30 by the support link mechanism 31, the T-shaped floats 9 similar to those of the above embodiment are provided on the left and right sides, and the middle side is provided. An inverted U-shaped float 9 is provided.

That is, the inverted U-shaped float 9 is provided with the same muddy water flow path 37 as that described above in the front float portion 33, and the rear float portion 34 is extended from the left and right sides of the front float portion 33. It has an inverted U-shape when viewed, defines a planting position P in the space formed between the left and right rear floats 34, and is provided with a planting claw 10 included in the planting transmission case 7 disposed above. is doing.
As a result, the muddy water discharged from the muddy water flow path 37 formed on the left and right of the front float portion 33 is diffused to the left and right on the upper surface of the float, weakened, and flows out from both sides of the rear float portion 34 to the field scene. The amount of muddy water flowing out from the rising portion 43 to the outside of the float 9 can be reduced, and pushing down of already planted seedlings can be prevented.

Next, a third embodiment of the float 9 will be described with reference to FIGS. The float 9 is provided with a flow path opening / closing mechanism 46 having a flow path lid 45 capable of opening and closing the muddy water flow path 37 with respect to the muddy water flow path 37 formed by the same configuration as that of the T-shape. ing.
The flow path opening / closing mechanism 46 in the illustrated example is detachably provided on the upper surface of the float behind the muddy water flow path 37 and at the bottom of a mounting bracket 47 having an upward U-shape in front view.

  The mounting bracket 47 has a support shaft 49 that supports the upper portion of the flow path cover 45 rotatably attached to the front end upper portion that is fitted to the road surface 37 a, and a coiled spring 50 that is inserted into the support shaft 49. The other end is engaged with the flow path lid 45 with one end thereof being locked to the mounting bracket 47, thereby urging the flow path cover 45 forward with the support shaft 49 as a fulcrum. And the flow path cover 45 is making the lower end curved along the leveling ground 36 from the front end height position contact the said road surface 37a from upper direction.

  As described above, the float 9 provided with the flow path cover 45 in the muddy water flow path 37 has a muddy water flow that does not reach or reaches the flow path cover 45 of the muddy water flow path 37 in a farm with a small amount of water. Since the flow path cover 45 is not opened against the urging force of the spring 50, the flow path cover 45 maintains a solid leveling posture as shown in FIG. A leveling action similar to that of the ground 36 can be exhibited and a wide leveling can be performed.

  In a farm with a large amount of water, the muddy water that is pushed forward strongly presses the flow path cover 45 and rotates the flow path cover 45 upward as shown by the dotted line against the urging force of the spring 50, so that it is released. Since a part of the muddy water is discharged from the muddy water channel 37 in the same manner as in the above embodiment, the transplanter 1 can smoothly perform the planting operation that prevents the already-planted seedlings from being pushed down. The muddy water channel 37 can be configured to be openable and closable by manual operation without using the spring 50.

1 is an overall side view of a transplanter according to the present invention. It is a whole top view which shows the structure of the float with which the planting apparatus of a transplanter is mounted | worn. FIG. 3 is an enlarged plan view of the float of FIG. 2. FIG. 4 is a side view of FIG. 3. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a whole top view which shows the float and arrangement structure concerning 2nd Embodiment of this invention. It is a top view of the float concerning 3rd Embodiment of this invention. It is a side view of FIG. It is the sectional view on the AA line of FIG. It is a perspective view which shows the structure of a planting frame. It is a side view of FIG.

Explanation of symbols

1 transplanter (riding rice transplanter)
2 traveling machine body 6 planting device 6a seedling stand 7 planting transmission case 9 float 10 planting claw 36 leveling ground 37 muddy water flow path 38 rising part 45 flow path cover

Claims (2)

  In the transplanting machine (1) in which the planting device (6) having the float (9) is provided in the traveling machine body (2) and the seedling is planted in the field scene prepared by the float (9), in front of the float (9) The transplanting machine is characterized in that a muddy water channel (37) for allowing muddy water to flow out from the front to the upper surface of the float is provided on the left and right of the rising portion (38) that forms the leveling surface (36) at the portion. The transplanter according to claim 1, wherein the muddy water flow path (37) is provided with a flow path lid (45) that can freely open and close the muddy water flow path (37) and forms a leveling surface (36) when the muddy water flow path (37) is closed.

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