JPH0746934B2 - Seedling planting equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling planting device for a seedling planting machine.

[Conventional technology]

As a conventional technique of this type, as shown in JP-A-61-271907, in order to eliminate the backlash of the gear train in the rotating case, the base of the brake arm is pivotally supported at the center of the sun gear. There is a seedling planting device in which a brake arm is extended and a midway portion thereof is urged by a spring provided near a planetary gear to brake the planting gear.

[Problems of conventional technology]

The above-mentioned conventional example has a configuration in which the brake arm is extended from the center of the sun gear to the planted gear, so interference between the brake arm and all gears must be considered, The rotating case has become large, and it has been impossible to obtain a small and lightweight seedling planting device with good planting performance.

Further, since the mounting portion of the sun gear and the mounting portion that pivotally supports the rotating case on the machine body are in the same position, the configuration in which the base of the brake arm is provided in the center of the sun gear is complicated and cannot be put to practical use. There wasn't.

[Means for Solving the Problems]

In order to solve the above-mentioned problems of the conventional example, the present invention provides a body with a seedling planting machine at the tip of a rotating case 10 that is rotatably supported by the machine body.
14 is mounted, and a gear train including a sun gear 1, a planetary gear 2.2, and a planting gear 4.4 that make a non-uniform speed meshing motion is provided in the rotating case 10 to rotate the rotating case 10. Accordingly, the posture of the seedling planting body 14 is displaced between a seedling taking-out posture and a seedling planting posture, and the planting gear 4 is braked by the brake arm 21 urged by the elastic body 22. In the seedling planting device for a seedling planting machine configured to remove the backlash, the base of the brake arm 21 is pivotally supported in the rotating case 10 toward the tip side of the sun gear 1, and the elastic body 22 is the planting gear. This is a seedling planting device for a seedling planting machine, which is provided in the vicinity of 4.

[Action effect]

In the present invention, as described above, the base of the brake arm 21 is pivotally supported in the rotating case 10 toward the tip side of the sun gear 1, so that the brake arm 21 serves as a mounting portion of the sun gear 1 and the rotating case 10 to the airframe. Since the rotation case 10 is in a position where it does not interfere with the rotation case 10 and the rotation case 10 has a small structure, a small and lightweight seedling planting device with excellent planting performance can be obtained.

Further, since the base of the brake arm 21 is pivotally supported on the tip side of the sun gear 1 and the elastic body 22 is provided in the vicinity of the planting gear 4, the brake arm 21 is located at a position away from the rotation center of the rotating case 10. Since the elastic body 22 is arranged and the weight of the tip portion of the rotating case 10 becomes heavy, the rotation becomes smooth and the planting performance is also improved.

〔Example〕

A seedling planting apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings.

A rotary shaft 8 in the lateral direction is rotatably transmitted to a transmission case 7 of the seedling planting device by a transmission mechanism 9 of the transmission case 7. A central portion of a rotating case 10 having a gear mechanism is rotatably mounted on the rotating shaft 8 by means of a bearing 11, and a non-circular sun gear 1 is eccentrically fitted to the rotating shaft 8 so as to be integrated with a transmission case 7. Install so that it does not rotate. Non-circular planetary gears 2 and 2 are meshed with both sides of the sun gear 1 so that the rotating case 10
Rotatably supported by a shaft 12, and these planetary gears 2
・ Non-circular planted gears 4 and 4 mesh on the outside of 2,
The planting shafts 13 and 13 are rotatably mounted on the rotary case 10, and the transmission case 10 is rotated by the rotary rotation of the rotary shaft 8.
By rotating the sun gear 1 planetary gear 2.2
Through gearing transmission of the planting gears 4 and 4 and the planting shafts 13 and 13,
It is configured to revolve around the rotation shaft 8 together with the rotation case 10 while rotating.

A seedling planting body 14 having a seedling planting fixture 3 is provided on the outside of the rotating case 10 of the planting shaft 13 so as to rotate integrally. The seedling planting fixture 3 is a pair of left and right parallel seedling segregating bodies. 15 and this seedling isolate
The seedling extruding body 16 comprises a seedling extruding body 16 that moves up and down along the rear side of 15 and locks and holds the seedlings separated by this seedling separating body 15 and extrudes this seedling at the time of planting. A cam 17 that is provided integrally with the rotating case 10 around the planting shaft 13 is connected with a sliding contact arm 19 so as to be vertically swingable around the seedling planting body 14 around the seedling planting body 14 to form the seedling planting body. When 14 rotates with the planting shaft 13, the swing arm 19 slides on the cam 17 and swings, and the seedling extruding body 16 is positioned at the top dead center at the seedling picking position a,
At the seedling planting position (b), the transmission is configured to be located at the bottom dead center.

The brake 6 is formed so that the brake cam 20 integrally provided on the planting shaft 13 protrudes as a large diameter portion at the seedling picking position a with respect to the seedling tank of the seedling planting device 3 and near the seedling planting position b with respect to the soil surface. Then, the brake arm 21 fitted in the bearing 12 of the planetary gear 2 is pressed against the rotating peripheral surface of the brake cam 20 by the spring 22 which is an elastic body, and the planted shaft 13 and the planted gear 4
The braking force is applied to the rotation of etc.

The seedling planting device comprises a seedling tank for feeding the seedlings to be stored while reciprocating with respect to the transmission case 7 and a seedling planting tool 3 which is planted and operated as described above, while sliding on the soil surface. Supported on a leveling float.

When the rotary shaft 8 and the rotary case 10 are transmitted and rotated by the transmission mechanism 9, the planted shaft 13 rotates through the sun gear 1, the planetary gear 2, the planted gear 4, etc., and the rotary shaft 8 is integrated with the rotary case 10. As a result, each seedling planting tool 3 keeps the parallel state in a certain posture and draws a substantially elliptical planting locus line c to move up and down, and move from the top dead center to the descending stroke. At the seedling planting position B which passes through the seedling take-out port of the seedling tank, the seedling separating body 15 at the tip separates the seedling and holds the seedling between the seedling extruding body 16 and further descends to reach the soil surface. The seedling planting position B is reached, and the seedling extruding body 16 pushes the retained seedlings downward to plant.

When the seedling planting equipment 3 reaches just before the seedling picking position (i), the brake 6
Is operated to cause the seedlings to be separated from the seedling tank in a state where there is no rattling of the gear transmission of the gears 1, 2, and 4. Further, when the seedling planting position B is reached, the brake 6 works again, seedling extrusion is performed by the seedling extruding body 16, and seedlings are inserted.

In this way, in the seedling planting operation of the seedling planting tool 3 which is rotated around the sun gear 1 via the planetary gears 2 through the planetary gear 2 to rotate and rotate integrally with the planting gear 4, By braking the rotation of the planting gear 4 with the brake 6 at the seedling picking position B and the seedling planting position B, the backlash of the gear transmission can be absorbed at a constant timing, so that this timing is accurate. Therefore, the seedling separation and planting can be accurately performed and stabilized.

And, in particular, the base of the brake arm 21 is the rotating case 10
The brake arm 21 is pivotally supported inside the sun gear 1 so that the brake arm 21 does not interfere with the mounting parts of the sun gear 1 and the rotating case 10 to the airframe. A seedling planting device with good planting performance can be obtained.

Further, since the base of the brake arm 21 is pivotally supported on the tip side of the sun gear 1 and the elastic body 22 is provided in the vicinity of the planting gear 4, the brake arm 21 is located at a position away from the rotation center of the rotating case 10. Since the elastic body 22 is arranged and the weight of the tip portion of the rotating case 10 becomes heavy, the rotation becomes smooth and the planting performance is also improved.

The transmission of each sun gear 1, the planetary gear 2, and the planting gear 4 in a non-circular form is caused by the planting locus line C of the seedling planting tool 3 in the soil near the bottom dead center of the seedling planting position B. The planting speed in the vicinity of this bottom dead center is set to be high by reducing the front-back width at.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan sectional view, FIG. 2 is a side sectional view, and FIG. 3 is a side view. In the figure, reference numeral 1 is a sun gear, 2 is a planet gear, 3 is a seedling planting tool, 4 is a planting gear, 10 is a rotating case, 14 is a seedling planting body, 21
Is a brake arm, and 22 is an elastic body (spring).

Claims (1)

[Claims] 1. A sun gear 1 and a planetary gear in which a seedling planting body 14 is mounted on the tip of a rotating case 10 which is rotatably supported by a machine body, and which engages at a non-uniform speed in the rotating case 10. The rotation case 10 is provided with a gear train consisting of 2.2 and planted gears 4.4.
The posture of the seedling planting body 14 is displaced between the seedling taking-out posture and the seedling planting posture in accordance with the rotation of the seedling planting plant 14 and the planting gear 4 is braked by the brake arm 21 biased by the elastic body 22. In the seedling planting device of the seedling plant configured to remove the backlash of the gear train, the base of the brake arm 21 is pivotally supported in the rotating case 10 toward the tip side of the sun gear 1,
The elastic body 22 is provided in the vicinity of the planting gear 4, and is a seedling planting device for a seedling planting machine.