JPH0510A - Method of controlling amount of seedling raked out of transplanter and device therefor - Google Patents

Abstract

PURPOSE:To eliminate change of shape of transplanting locus following an adjustment of an amount of seedlings raked out by rotating, displacing and fixing a support shaft of pivoting and connecting one end of ball crank around the center of a driving shaft. CONSTITUTION:A transplanting lever 1 is moved by a crank arm 2 and a bell crank 4. The transplanting lever 1 and a support shaft 12 holding a base end part of the bell crank are displaced in an integrated way around the center of a driving shaft 3 of operating the crank arm to control the amount of seedlings raked out. The amount of seedlings raked out can be regulated without changing the whole shape of a transplanting locus K.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling scraping amount adjusting method and a seedling scraping amount adjusting device for a transplanter for planting seedlings in a paddy field or a field.

[0002]

2. Description of the Related Art A general transplanter of this type includes a seedling table which reciprocates laterally to the left and right, and a seedling receiver which is fixed to the tip of the seedling table and slidably supports the front edge of a mat-shaped seedling. A seedling planting mechanism including a planting rod facing the planting claw at the tip is provided at the seedling take-out opening opened in the seedling receiver. The planting rod having a planting claw at its tip end is pivotally connected at its intermediate portion by a crank arm which is rotationally driven by a drive shaft, and its rear end is pivotally supported at one end of a bell crank. The bell crank is swingably provided around a fulcrum shaft whose other end is fixed to the machine body. This planting rod is driven by a crank arm that rotates and a bell crank that swings, so that the planting claw on the tip side makes a vertical elliptical motion along a predetermined planting locus and reciprocates laterally to the left and right. The pine-shaped seedlings on the stand are separated into one plant and planted in the field.

[0003]

By the way, as described above, the planting rod which moves up and down a predetermined planting locus by the crank arm and the bell crank adjusts the mounting angle of the planting claw, or By adjusting the center distance between the fulcrum shaft of the bell crank and the drive shaft, the overall shape of the planting locus can be changed and the seedling scraping amount can be adjusted. Since the entire shape of the attached locus changes each time it is adjusted, the planting rod that moves along the planting locus with angular acceleration that causes the moment of inertia to change with time causes a vibration of the machine body. I got it. Therefore, in view of the conventional situation described above, the present invention was devised to solve the problem, and even if the planting rod is displaced and adjusted to adjust the seedling scraping amount, the shape of the planting locus itself. The object of the present invention is to provide a method and an apparatus for adjusting the seedling scraping amount of a transplanter in which the body vibration does not change due to the movement of planting rods for seedling planting.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a crank arm in which an intermediate portion of a planting rod 1 whose rear portion is pivotally supported at one end of a bell crank 4 is driven and rotated by a drive shaft 3. A fulcrum shaft 12 pivotally supported at one end of the drive shaft 2 and pivotally connected to the other end of the bell crank 4 is provided so as to be rotatable and fixed along a radius centered on the axis of the drive shaft 3. By supporting it on the bracket 6, the planting rod 1 and the fulcrum shaft 1
And 2 are adapted to be integrally rotationally displaced about the axis of the drive shaft 3.

[0005]

[Operation] Therefore, the seedling planting mechanism P configured to vertically move along the predetermined planting locus K by the crank arm 2 and the bell crank 4 is effectively used. The fulcrum shaft 12 is moved integrally with the planting rod 1 along a radius centered on the axis of the drive shaft 3 so that the planting locus K is moved in the scraping direction without changing the entire shape. You can adjust the amount of seedlings scraped. Since the overall shape of the planting locus K does not change in this way, the amount of seedling scraping can be adjusted easily and quickly by maintaining a state in which the machine vibration does not change due to the seedling planting movement of the planting rod 1. . Further, the fulcrum shaft 12 that pivotally connects the other end of the bell crank 4 is supported by a bracket 6 that is rotatably and displaceably fixed along a radius centered on the axis of the drive shaft 3 to drive the fulcrum shaft 12. The bracket 6 that supports the shaft 3 can be used as it is to support the fulcrum shaft 12.

Further, a fulcrum shaft 12 of a bell crank 4 is supported on one end of a bracket 6 which rotatably supports the drive shaft 3, and the bracket 6 is rotatably and displaceably fixed to a fixed seat 9 fixed to the machine body. As a result, the planting rod 1, the fulcrum shaft 12, and the bracket 6 can be integrally moved around the axis of the drive shaft 3, and the bracket 6 after the scraping amount is adjusted uses the fixed seat 9. Can be fixed.

[0007]

EXAMPLES Examples of the present invention will be described below with reference to the drawings. 1 is a planting rod in the seedling planting mechanism P, 2 is a crank arm, 3 is a drive shaft, 4 is a bell crank, and the drive shaft 3 is driven and rotated by the power from a drive source in the main body case 5. By doing so, the crank arm 2 fixed to the shaft end is driven to rotate,
The swing end of the crank arm 2 is rotatably supported by an intermediate portion of the planting rod 1. Further, the inside of the crank arm 2 of the drive shaft 3 is rotatably supported by a pair of left and right brackets 6, and the pair of left and right brackets 6 has a drive shaft 3 as shown in FIGS. Three elongated slots 7 for adjustment located on the radius centered on the axis of 3 are provided, while each of the brackets 6 is provided on the outer side surface of a fixed seat 9 fixed to the machine body, which will be described later in detail. Drive shaft 3
It is provided so that it can be displaced and fixed about the axis of the. That is, on the side surface of the fixed seat 9, three mounting holes are opened at positions corresponding to the adjustment long holes 7 of the bracket 6, and nuts 10 are fixed to the inner back surfaces of the mounting holes, respectively. Each bracket 6 is provided on the side surface of the fixed seat 9 via a mounting bolt 11 so as to be displaceably rotatable and fixed.

The bell crank 4 has a fulcrum shaft 1 whose upper end is rotatably pivotally connected to the rear part of the planting rod 1 and whose lower end is fixed to the lower end of the bracket 6.
The fulcrum shaft 12 is rotatably and pivotally connected to the shaft 2 so that the fulcrum shaft 12 is displaced and moved integrally with the planting rod 1 through the bracket 6 along a radius centered on the axis of the drive shaft 3. . Further, as shown in FIG. 1, the front part of the planting rod 1 is fixed with a pair of left and right planting claws 13 which are opposed to the seedling width for one plant, and the planting claws 13 are vertically arranged. A seedling pushing tool 14 that is movably driven is provided oppositely.

Further, as shown in FIGS. 4 to 5, a seedling mounting table 15 that reciprocates laterally is provided on the rear side of the walking type transplanter T, and the tip end side of the seedling mounting table 15 is disposed. A seedling receiver 16 that slidably supports the front edge of the pine-like seedling is fixed, and a seedling take-out port 17 facing the planting claw 13 is opened in this seedling receiver 16, so that the tip of the planting claw is located. Planted rod 1 having 13
Is driven to rotate by a crank arm 2 whose middle portion is fixed to a drive shaft 3, while its rear end portion is swingably driven by a bell crank 4 around a fulcrum shaft 12. The tip-side planting claw 13 moves vertically along a predetermined planting locus K in a deforming elliptic motion to separate the pine-shaped seedlings (not shown) on the seedling mounting table 15 into a single stock. When this planting rod 1 moves to the field H along the planting locus K, the seedling pushing tool 14 descends to plant seedlings. Reference numeral 19 shown in FIG. 1 is a scraper fixed to the side surface of the seedling mounting table 15 and slidably moved to the seedling receiving surface of the seedling receiving body 15. As shown in FIG. 3, when the fulcrum shaft 12 of the bell crank 4 is displaced and moved to the solid line position around the axis of the drive shaft 3, the planting claw 13 rotatably supported by the crank arm 2 and the bell crank 4.
The planting locus K moves to the position indicated by the solid line, and the distance to the seedling receiver 16 becomes L, so that the scraping amount of the pine seedling can be increased. Further, when the fulcrum shaft 12 of the bell crank 4 is displaced and moved to the chain line position around the axis of the drive shaft 3, the planting claw 13 rotatably supported by the crank arm 2 and the bell crank 4 has its planting claw 13 moved. The trail K moves to the position of the chain line and the distance to the seedling receiver 16 becomes S, and the scraping amount of the pine seedling can be reduced. Further, as shown in FIG. 1, a recess 20 is provided in the upper portion of the bracket 6, and the base end side of the recess 20 is supported by the adjusting seat 21 provided on the fixed seat 9 so as to be movable back and forth through the W nut. The tip end side of the adjusting rod 22 is fitted.
Therefore, by adjusting the W nut with the mounting bolt 11 loosened, the bracket 6 is adjusted through the adjusting rod 22.
Moves in the scraping direction around the axis of the drive shaft 3, and in conjunction with this, the planting rod 1 and the bell crank 4
The seedling scraping amount can be adjusted steplessly between the minimum value and the maximum value by moving integrally.

[0010]

As described above, according to the present invention,
A seedling planting mechanism configured to vertically move a predetermined planting locus by a crank arm and a bell crank is effectively used, and a fulcrum shaft of the bell crank has a radius centered on the axis of the drive shaft. By moving integrally with the planting rod along
The planting path can adjust the seedling scraping amount by simply moving it in the scraping direction without changing the overall shape, so maintain the state where the machine vibration does not change due to the seedling planting movement of the planting rod. The amount of seedling scraped can be adjusted easily and quickly.

[Brief description of drawings]

FIG. 1 is a side view for explaining a seedling scraping amount adjusting device in a transplanter according to the present invention.

FIG. 2 is a plane development view for explaining the seedling scraping amount adjusting device.

FIG. 3 is a side view for explaining the action of the seedling scraping amount adjusting device.

FIG. 4 is a plan view showing the entire gait type transplanter embodying the present invention.

FIG. 5 is a side view of FIG.

[Explanation of symbols]

1 Planted rod 2 Crank arm 3 Drive shaft
4 Bell crank 5 Body case 6 Bracket 7 Adjustment long hole 9 Fixed seat 10 Mounting bolt 11 Nut 12 Support shaft
13 Planting claws 15 Seedling table 16 Seedling receiver 17 Seedling take-out port.

Claims (2)

[Claims] 1. A rear part pivotally supports an intermediate part of a planting rod pivotally supported at one end of a bell crank at one end of a crank arm which is driven and rotated by a drive shaft, and pivotally supports the other end of the bell crank. A scraping amount adjusting method for a transplanting machine, which adjusts a scraping amount of a seedling by rotationally displacing and fixing a connecting fulcrum shaft around an axis of the drive shaft. 2. A fulcrum shaft, which pivotally connects the other end of the bell crank, is supported by a bracket provided so as to be rotatable and displaceable along a radius centered on the axis of the drive shaft, and the planting rod and the fulcrum. A scraping amount adjusting device for a transplanter, which is integrally provided with a shaft through the bracket so as to be rotatable and displaced.