JPH0710201B2 - Seedling transplant device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seedling transplanting device such as a rice transplanter and a vegetable transplanter.

2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 57-119629, Japanese Utility Model Publication No. 57-164514 and the like, a side view of a transplant locus drawn by a seedling separating and transplanting nail provided in a transplanter of a seedling transplanting device is shown in a side view. In order to draw a letter shape, the main body of the seedling transplanter is divided into a base side and a tip side, and the tip side where the transplant nail is attached is forcibly shaken and swung to draw an appropriate transplant trajectory. There was something that was made.

It should be noted that if it is only necessary to draw an 8-shaped transplant locus, it can be achieved by selecting the positions of the crank mechanism and the swing arm for mounting the transplant tool on the machine body. Since there are various restrictions with respect to the stand, etc., it is the reality that it cannot be selected in reality. For this reason, the above-mentioned conventional technique is considered.

Problems to be Solved by the Invention In the techniques disclosed in Japanese Utility Model Publication No. 57-119629 and Japanese Utility Model Publication No. 57-164514, a base portion for mounting a transplant main body on a fuselage side by a crank mechanism and a swing arm. Side and a separate transmission mechanism for swinging movement by another transmission mechanism are provided on the distal end side, and the base side and the distal end side must be bent so that the structure becomes complicated. was there.

Means for Solving the Problems In solving the above problems, the present invention separates seedlings from the seedling mounting table 6 side and transplants them into the soil.
Install the main body 13a of the seedling transplanter 13c equipped with b with the crank transmission mechanism 1
A seedling transplanting device which is mounted on the machine side by means of a forced fluctuation mechanism 16 for forcibly rocking or rotating the base side of the rocking arm 15 when mounted on the machine side by means of 4 and the rocking arm 15. did.

EFFECTS AND EFFECTS OF THE INVENTION According to the present invention, when the main body of the implanting tool is driven by the crank mechanism and the movement of the swinging arm is restricted, the base side of the swinging arm forcibly performs a predetermined motion. The transplanted claws of No.2 operate in a proper 8-shaped motion locus to separate seedlings from the seedling stand side and transplant them to the soil surface below,
The seedling transplanting posture can be improved without significantly dragging the seedlings into the soil, and the structure of the transplanter body can be simplified without the need to have a bendable structure.

Example 1 is a transplantation transmission box on the main body side of a walk-behind rice transplanter, which is fixed to the rear end side of a vehicle body 3 propelled by a pair of left and right drive wheels 2, 2 from the front prime mover side not shown. Is configured to be driven by a transmission device in the vehicle body frame.

Reference numeral 4 denotes a rear support frame, to the rear end of which a base portion of a handle 5 which is divided into left and right forks is fixed.

Reference numeral 6 denotes a seedling table, which is arranged on the upper surface of the handle 5 so that the front side is in a lower position so that the support frame 4 and the handle 5 can be laterally supported by the supports 7 and 8. It is connected to a reciprocating lateral movement mechanism in the transplantation transmission box 1 via a moving rod 9 and a connecting body 10, and the seedling table 6 is configured to reciprocate left and right. Reference numeral 11 denotes a seedling feeding belt provided on the bottom surface of the seedling mounting table 6.

Reference numeral 12 is a seedling receiving frame, which is L-shaped in side view, is integrally formed with the support body 7, and the left and right sides of the seedling placed on the seedling mounting table 6 are fixed so as not to fall from the lower end side. The seedling separation port is formed so that the seedling transplanting nails described later intervene from above and divide the seedlings.

13 is a seedling transplanter, the inside of the front side of the transplanter main body 13a is hollow, and the transplanting nail 13b is fixed to the tip end in the up-down direction, and the extrusion protruding from the hollow portion to the back part of this transplanting nail 13 A pawl 13c is provided, and a cam and a transmission mechanism for operating the pushing pawl 13c are internally provided in the hollow portion.

Reference numeral 14 denotes a crank mechanism, which is appropriately driven and driven, and a crank pin 14a thereof is pivotally attached to a front and rear hollow portion of the implant body 13a, and the cam is attached to the crank pin 14a.

Reference numeral 15 is a swing arm, the base side of which is pivotally attached to a crank pin 17 which is an example of the forced change mechanism 16, and the tip side of which is pivotally attached to the rear end side of the implant body 13a. The base side is configured to draw a rotation trajectory. Reference numerals 18 and 19 denote gears for driving the crank of the forced fluctuation mechanism 16.

20 indicates a leveling float.

Explaining the operation of the above example in detail, after mounting the seedlings on the seedling mounting table 6, when propagating each part while propelling the vehicle body 3,
The front and rear intermediate portions of the implant 13 are eccentrically driven by the crank 14, and the rear portion is swung by the swing arm 15. Moreover, the base of the swing arm 15 is forcibly rotated.

Therefore, the transplanted nail 13b of the transplanter 13 draws an 8-shaped locus (P) as shown.

The transplanting claws 13b are used to divide the seedlings from the seedling mounting table 6 that reciprocates laterally to the left and right, and transplant the seedlings to the soil surface prepared by the soil preparation float 20 below.

At this time, the transplanting claws 13b move downward in the state of holding the seedling while moving in the traveling direction, plunge into the soil and move upward slightly while moving backward to transplant the seedling.

In addition, the 8-character locus (P), which is the locus of transplantation, is a forced change mechanism.
It can be freely changed by the rotation speed of the 16 cranks, and the lower end of the locus (P) can be made sharp.

In addition to the above-described embodiment, the forced fluctuation mechanism 16 can be implemented by forcibly rocking the base side of the rocking arm 15 as shown in FIGS.

That is, in the embodiment shown in this drawing, the crank pin
14a is provided so as to penetrate through the planting tool main body 13a, a second crank 21 is configured on the crank pin 14a, and a swing link 22 forcibly swinging by the second crank 21 is provided on the transplant transmission case 1 side. The rocking arm 15 is pivotally connected to the rocking link 22 to pivotally mount the rocking arm 15. Even in this case, the shape of the locus (P) can be freely changed by adjusting the position of each pivotal portion of the swing link 22 and changing the length between the pivotal pins.

Further, as shown in FIG. 6, the swing arm 15 may be swung by the second crank 21 via the link rod 23. In addition to this, various forced change mechanisms 16 are conceivable, but the point is that the swing arm 15 is forcibly moved to make the operating locus of the transplanted nail 13b proper.

Further, as shown in FIG. 7, in the embodiment shown in FIGS. 1 to 3, the transmission mechanism for driving the crank of the forced drive mechanism 16 is provided with the transmission mechanism 24 to change the speed of the drive mechanism 16. By doing so, the transplant locus (P) can be easily changed, and an appropriate transplant locus can be selected depending on the transplant work speed and the conditions of the transplant field. In this embodiment of the speed change mechanism 24, the two transfer gears 18a, 18b are selectively meshed with the gear 19 which can be moved in the spline shaft direction by the operation lever at the steering position. Of course, it is of course possible to adopt a configuration in which the speed is changed by a continuously variable transmission mechanism.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional view of an essential part, FIG. 2 is a side view of an essential part of a rice transplanter in which the present invention is implemented, and FIG. 3 is an essential part thereof. FIG. 4 is a side view of a main part of another example, FIG. 5 is a cross-sectional view of the main part of FIG. 5, FIG. 6 is a side view of the main part of another example, and FIG. The principal part sectional drawing of the Example which changed the part is shown. In the figure, 6 is a seedling mount, 13 is a transplanter, 13a is a transplanter main body, 13b is a seedling separation transplant nail, 14 is a crank transmission mechanism, 15 is a swing arm, 16
Indicates a forced fluctuation mechanism.

Claims (1)

[Claims] 1. A main body 13a of a seedling transplanter 13c provided with a seedling separating and transplanting nail 13b for separating seedlings from the seedling mounting table 6 side and transplanting them into soil.
Is mounted on the machine body side by the crank transmission mechanism 14 and the swing arm 15, and the base side of the swing arm 15 is mounted on the machine body side through a forced fluctuation mechanism 16 for forcibly swinging or rotating. Seedling transplant device.