JPH0414971Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a seedling planting device for dividing seedlings one by one from a seedling pine on a seedling stand and then planting them in a field. .

(Prior art) Conventionally, a transmission case in the body of a rice transplanter is provided with a rotating body that is rotationally driven by power transmission from a power source, and the rotating body is provided with a rotating body that is radially spaced apart from the center of rotation by an appropriate distance. The planting claw cases are rotatably provided at equal positions in the rotational inner circumferential direction of the rotating body, so that each planting claw case rotates once in the opposite direction to the rotation direction of the rotating body during one rotation of the rotating body. There is a rice transplanter that has a rotary planting claw configured as follows.

(Problem to be solved by the invention) As with the conventional vertically swinging type seedling transplanting device, the rice transplanter described above can be moved vertically while facing the direction of the seedling stand. Since it is capable of rotating motion, it has the feature that seedlings can be planted in one seedling planting row at high speed without causing an increase in vibration caused by a plurality of planting claw cases.

However, the planting claw is composed of two claws, and there are problems such as foreign matter from the field getting caught between them or seedling blocks adhering to the planting claws, damaging the seedling platform or causing plant dropouts.

(Means for solving the problem) Therefore, the purpose of the present invention is to provide a rice transplanter having a planting claw that does not trap foreign objects other than seedlings. The technical means is to provide a rotating body that is rotationally driven by power transmission from a power source to the transmission case in the body of the rice transplanter, and to set the rotating body at a position radially away from the center of rotation by an appropriate distance. Moreover, the planting claw cases are rotatably provided at equal parts in the rotational inner circumferential direction of the rotating body, so that each planting claw case rotates once in the direction opposite to the rotation direction of the rotating body during one rotation of the rotating body. This seedling planting device of a rice transplanter is provided with a rotary planting claw configured as shown in FIG.

(Effect of the invention) According to this technical means, since the tip of the planting nail case turns vertically with the tip facing the direction of the seedling platform, one side of the planting claw case that holds the seedling in the middle of the turning turns. The scraper in the planting nail case passes between the planting nails that do not pinch the other seedlings,
Foreign objects are removed before the seedlings are separated from the seedling mats on the seedling stand, so foreign objects caught between the planting claws will not damage the seedling outlet of the seedling stand.
Planting accuracy is improved because the seedling pine is not divided and so-called missing plants do not occur.

(Example) The embodiments shown in the drawings will be described below.

1 is a transmission case in the body of the rice transplanter, and on the side of the transmission case 1, a boss body 2 is oriented horizontally;
Moreover, it protrudes substantially parallel to the seedling tray 10.

A rotating shaft 3 is inserted into the boss body 2 and is driven to rotate by power transmission from an engine mounted on the body of the rice transplanter. A rotating body 4 is fitted onto the end of the rotating shaft 3 that protrudes from the boss body 2, and is adapted to rotate in the direction of arrow A in the figure.

The rotating body 4 is composed of two halves of cases 4a and 4b, into which the boss body 2 is rotatably fitted, and a sun gear 5 configured to be freely rotatable with respect to the rotating body 4 is fitted in the center thereof. It is arranged.

The sun gear 5 is fixed to the transmission case 1 so as to be able to freely adjust its rotational phase and not to rotate. Its structure is such that a fixing ring 6 fitted onto the inner diameter of the body 2 of the transmission case 1 and a meshing portion 7 of the sun gear 5 are spline-fitted.

A rotating shaft 3 is provided at both ends of the outer case 4b of the rotating body 4.
The boss portion 8 is located at the same distance L from the rotation axis 3.
It is integrally protruded parallel to the

A planting claw case 11 having a planting claw 9 extending toward the seedling platform 10 is rotatably fitted onto the outer periphery of the boss portion 8 at its base.

The camshaft 12, which is rotatably inserted into the inner hole of the boss portion 8, has one end fixed to a side plate 13, the other end of the camshaft 12 is fitted into the case 4a, and the side plate 13 is fixed to the outer plate 14. and secure with bolts 15.

An intermediate shaft 16 is rotatably supported in the rotating body 4 at an intermediate position between the rotating shaft 3 and the camshaft 12.
An intermediate gear 17 that meshes with the sun gear 5 and has the same number of teeth as the sun gear 5 is rotatably provided on the intermediate gear 6.
A planetary gear 18 that meshes with an intermediate gear 17 on an intermediate shaft 16 is fitted onto the camshaft 12, so that one rotation of the rotating body 4 causes the camshaft 12 to rotate once in the direction opposite to the rotational direction of the rotating body 4. Configure it as follows.

At this time, the sun gear 5, the intermediate gear 17, and the planetary gear 18 are rotated so that the centers o, o', o'' of the respective gears 5, 17, 18 are adjusted by an appropriate distance e from the rotation of each shaft 3, 16, 12. Constructed into an eccentric gear.

Then, one end of the boss portion 8 is made to face inside the planting claw case 11, and a meshing claw 19 is formed on the one end, and a cam 20 that meshes and engages with this is mounted on the cam side 1.
It is configured to be rotatably fitted into the planting claw case 11 and serve as a power transmission section for opening and closing the planting claws in the planting claw case 11 and for transmitting power to the seedling extrusion claws.

The illustrated planting claws can be opened and closed left and right, and when dividing the seedling pine on the seedling platform 10, the distance between the fixed claws 9a and the opening/closing claws 9b of the planting claws 9 is narrowed.
When planting in the field, the opening/closing claw 9b is forcibly opened, and the fixed claw 9 is moved against the planting claw case 11.
a is fixed with a bolt, and the opening/closing pawl 9b is attached to the opening/closing shaft 22 via a member 21.

A projection 24 protruding from the tip of a lever 23 attached to the opening/closing shaft 22 is brought into contact with the outer peripheral surface of the cam 20 by a spring 25. Therefore, when the planting claw case 11 is near the lower limit, the opening/closing shaft 22 is moved by the cam 20.
is forcibly rotated to move the opening/closing claw 9b.

Now, when the rotating body 4 revolves around its rotation axis 3 in the direction of arrow A, the intermediate gear 17 rotates in the direction of arrow B by the same rotation angle as the rotation angle of the revolution. The rotation of the intermediate gear 17 causes the camshaft 12 to rotate in the direction of arrow C, that is, in the opposite direction to the revolution direction of the rotating body 4. 1 unit
The tip of the planting claw 9 moves downward from top to bottom on the side facing the seedling stand 10 during this turning movement. The seedlings are divided one by one from the seedling pine at the section, and the seedlings are planted in the field scene 26 near the lower limit of descent, and then raised from the field scene 26.

In addition, the same gears 17 and 18 that interlock and connect the intermediate shaft 16 and the camshaft 12 are arranged so that the center o of each gear is eccentric by an appropriate dimension e from the rotation center of the respective shafts 16 and 12. By configuring this, the camshaft 1 as the rotating body revolves in the A direction.
The rotation of the rotating body 4 in the C direction is caused by the diameter difference between the eccentric interlocking gears 17 and 18 during one rotation.
Since the rotation speed of the camshaft 12 in the C direction becomes faster or slower than the rotation speed of the rotating body 4, the planting claw case 1
At the time when it descends to approach the field scene 26 of 1,
By setting the time when the camshaft 12 rotates faster in the C direction to correspond to the time when the camshaft 12 rises closer to its upper limit, each planting claw case 11 approaches the field scene 26. When it descends, it lags behind the revolution of the rotating body 4 in the C direction, rotates on its own and changes its attitude downward, and when it approaches the upper limit of the ascent, it advances in the direction of arrow C more than the revolution of the rotating body 4, and automatically Since it rotates and changes its posture upward, the closed loop of the movement locus of the tip of the planting claw 9 of each planting claw case 11 becomes a vertically elongated elliptical closed loop curve 27'.

The present invention is a rice transplanter equipped with a rotary planting claw as described above, in which a scraper for cleaning the planting claw is provided on the back side of each planting claw case.

Reference numeral 27 is the scraper, and when the planting claw 9 descends by dividing the seedlings one by one from the seedling pine on the seedling platform 10, it passes by the planting claw 9 which has already planted seedlings in the field and has risen. When they pass each other, the scraper 27 of the planting claw case 9 that holds the seedling passes between the planting claws 9 that does not hold the seedling between them. At that time, foreign objects are removed.

Therefore, since the cleaned planting claws 9 come to the seedling take-out port, the seedling take-out port of the seedling stand will not be damaged, and a single seedling from the seedling pine will not be undivided, so there will be no missing plants. There is no fear of

In addition, as shown in FIG.
8, the vicinity of the seedlings planted in the field is held down by the soil plate 28, thereby ensuring reliable planting.

[Brief explanation of the drawing]

Figures 1 and 2 are a front view and a plan view of the proposed seedling planting device, Figure 3 is an explanatory diagram of the operation of the proposed seedling planting device, Figure 4 is a plan view of the seedling planting device, and Figure 5 is the same as that shown in Figure 4. - An enlarged sectional view, FIG. 6 is a - sectional view of FIG. 4,
FIG. 7 is an explanatory diagram of the operation of the planting nail case equipped with a soil plate, and FIG. 8 is a perspective view of the soil plate shown in FIGS. 1... Transmission case, 3... Rotating shaft, 4... Rotating body, 5... Sun gear, 9... Planting claw, 10... Seedling stand, 11... Planting claw case, 12... Cam shaft,
16...Intermediate shaft, 17...Intermediate gear, 18...Planetary gear, 20...Cam, 27...Scraper.

Claims (1)

[Scope of utility model registration request] A rotating body that is rotationally driven by power transmission from a power source is installed in the transmission case of the body of the rice transplanter, and the rotating body is located at a position a suitable distance away from the center of rotation in the radial direction. A rotary planter in which planting claw cases are rotatably provided at equal positions on the inner circumferential direction of the rotating body, and each planting claw case is configured to rotate once in the opposite direction to the rotational direction of the rotating body. A seedling planting device for a rice transplanter having attached claws, characterized in that a scraper for cleaning the planting claws is provided on the back of each planting claw case.