JPS6131629Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is equipped with a seedling stand in which a plurality of seedling placing parts are arranged side by side for placing and accommodating a plurality of seedlings with soil, and each of the seedling placing parts has a seedling vertical position. The present invention relates to a structure of a seedling feeding section of a rice transplanter, which is provided with a feeder and is also provided with a seedling holding device corresponding to each seedling placing section to prevent the seedlings from floating up.

The plurality of parallel seedlings in the above-mentioned seedling supply section structure are fed vertically at any time by a vertical seedling feeder provided in each row, but in general, the rate of weight loss of the seedlings due to consumption is at the top of the bed. This tends to vary depending on the seedling row due to differences in water content, etc., so seedlings must be replenished at different times for each seedling row, resulting in an increased number of interruptions and replenishment work. The process became complicated, and there was a problem that the efficiency of planting work decreased due to replenishment of seedlings.

Therefore, in order to reduce the friction between the seedlings with soil and the seedling stand as much as possible, we decided to feed the same amount of parallel seedlings with soil, regardless of the weight of the seedlings or the difference in the viscosity of the bed soil. The technique disclosed in Japanese Patent No. 64726 has been conventionally known.

However, this conventional structure uses a large number of forced feeding devices equivalent to vertical seedling feeding devices to vertically feed the entire seedling. Since it is designed to feed the seedlings vertically, the structure is complicated, and there are other disadvantages such as the weight of the entire seedling stand is heavy.

The present invention is not a structure that uses multiple stages of forced feeding devices to feed the entire seedlings, but rather uses a single forced vertical seedling feeding device and effectively utilizes a separate free-rotating rotor to simplify and reduce the structure, while making it possible to feed seedlings with soil attached in parallel in equal amounts in a synchronized manner, and furthermore, to prevent the seedling transport from being hindered by the seedling holding device.

Next, embodiments of the present invention will be described based on the drawings.

The planting arm 3 is driven to swing up and down by a crank arm 2 rotatably attached to the planting mechanism case 1, and a seedling planting claw 4 attached to the tip thereof is given a fixed rotational trajectory. A plurality of seedling planting devices 5 configured to perform vertical movement along
A seedling supply unit 6 is provided in front of each of them, and the transmission is transmitted from the self-propelled machine to the transmission, and as the machine moves, multiple rows of seedlings are planted in the muddy soil of the field. It constitutes the seedling planting section of the rice transplanter.

The seedling supply section 6 is constructed as follows.

That is, the slanted seedling resting platform 7 is constructed by arranging a plurality of seedling resting parts in parallel in order to place a plurality of pine-shaped soil-attached seedlings that are separately supplied to the seedling planting device 5 in a state in which they are lined up from side to side. The seedling planting device 5 is attached to the planting mechanism case 1 in such a manner that it slides back and forth from side to side along the guide rail 8 as the seedling planting device 5 moves. In the section, a rotary body 9 for feeding seedlings, which acts as a vertical seedling feeding device that acts on the bottom of the soil of the bed and forcibly transfers the seedlings to the seedling supply port side, is installed at the end of the stroke where the seedling table 7 slides from side to side. It is connected to a sliding drive mechanism (not shown) on the seedling platform so that it is driven each time the seedlings reach the seedlings. The seedlings are divided and taken out, and when the removal of one row at the lower end is completed, the seedlings are transported to the seedling supply port side by the lowering of the seedlings by their own weight and by the rotary body 9 for feeding the seedlings.

As shown in FIGS. 1 and 2, a mounting rod 10 is horizontally suspended on the seedling surface side of the seedling platform 7, and a plurality of rod-shaped seedling pressers 11 are attached to the seedlings. Two of these are supported by the mounting rod 10 in a state where they are arranged to act on the left and right sides of each seedling, and are designed to prevent each seedling placed from floating up.

As shown in FIGS. 1 to 3, on the back side of the seedling rack 7, idler shafts 12 having a length spanning almost the entire width of the seedling rack are provided in parallel in the seedling transfer direction. Each rotating body 1 has a protrusion on its outer periphery.
A plurality of the seedlings 3 are attached so that two of them act on the left and right sides of each seedling, and the protrusions protrude above the surface of the seedling to bite into the bottom of the soil of the seedling bed. , it is possible to suppress the difference in weight loss rate between seedlings placed side by side, which occurs due to the moisture content of the soil bed. That is, by connecting the rotating bodies 13 that engage with the bed soil of the juxtaposed seedlings separately and the free rotating shaft 12 that connects these rotating bodies 13, the seedlings can pull each other due to the difference in their weight. , and are braked to adjust the amount of movement of each other.

When the rotating body 13 is provided, as shown in FIG. 1, the action range L of the seedling presser 11 is
The rotating body 13 is arranged so as to act on the bottom of the bed soil on the upper side in the direction of seedling transfer, so that the seedling holding tool 11 does not cause trouble in transferring the seedlings or in supplying the seedlings. It has been taken into consideration. That is, the bed soil is relatively hard and the rotating body 13
Even if the seedlings rise up from the seedling stand 7 at the rotating body installation part due to a decrease in the biting amount,
This arrangement prevents the upper surface of the soil from being pressed against the seedling presser 11 and creating a large movement resistance, unlike when the rotating body 13 is located within the action range L. After the front end of the rotary body 13 comes into contact with the rotary body 13, the seedlings to be supplied are not pinched between the rotary body 13 and the seedling presser 11 by lifting the rotary body 13 by forced pushing, thereby preventing seedling supply failure from occurring. be.

In summary, in the present invention, in the structure of the seedling supply section of the rice transplanter mentioned above, on the back side of the seedling stand 7,
A plurality of idling shafts 12 extending over substantially the entire width of the seedling table 7 are installed at appropriate intervals in the seedling transfer direction, and
A rotating body 13 with protrusions that protrudes from the seedling-placing surface side of the seedling-placing table 7 and engages each of the plurality of pine-shaped seedlings is integrally fixed to the idle shaft 12, and further, the protrusions The freely rotating shafts 12 to which the rotary bodies 13 are fixed are arranged on the upper side of the action range L of the seedling holding tool 11 in the direction of transferring the seedlings.

In other words, if the seedlings in each row are connected by the rotary bodies 13 that engage with their bed soil parts and the idle shaft 12 that connects the rotary bodies 13, the amount of movement when vertically fed, for example, becomes large. If the weight of the seedlings in the row is lighter than the weight of the seedlings in the smaller row, the larger seedlings will experience movement resistance from the smaller seedlings and their movement will be reduced, and the seedlings in the larger row will If the weight of the seedlings in the smaller row is heavier than the weight of the seedlings in the smaller row, the difference in weight causes the seedlings to move closer together, so that the smaller seedlings are pulled by the larger seedlings and their displacement is increased. Since they influence each other to reduce the difference in movement amount, the difference in seedling weight loss speed between the seedling rows can be minimized as much as possible. Therefore, synchronized and equal amount feeding is possible with a simple structure such as providing a rotating body with protrusions that engage with the seedlings in each row fixed to a coaxial free rotating shaft, which simplifies the structure and reduces weight. I was able to measure it.

Furthermore, since the rotary body with projections is provided in a plurality of stages in the seedling feeding direction, there is an advantage that the entire seedling can be fed evenly and evenly.

When installing the rotary body 13, if the bed soil is hard, if the rotary body 13 is located within the action range L of the seedling presser 11, the rotary body 13
Since the amount of biting into the bed soil is reduced, the seedlings will rise above the seedling stand 7 and be strongly pressed by the seedling presser 11, making the seedlings less slippery. Even if the seedlings float up on the rotating body installation part, the seedling holding device 11 does not provide any movement resistance, so the rotating body 13
Even if the seedling presser 11 is provided, it is possible to prevent the occurrence of missing plants due to obstacles in transferring the seedlings, and when replenishing the seedlings, the front ends of the supplied seedlings are lifted upward after coming into contact with the rotating body. In this way, it is possible to prevent the seedlings from being pinched between the rotating body 13 and the seedling presser 11, which would hinder the supply of seedlings.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the seedling feeding section of the rice transplanter according to the present invention. FIG. 1 is a side view of the seedling planting section, FIG. 2 is a plan view of the seedling stand, and FIG. - It is a sectional arrow view. 5... Seedling planting device, 7... Seedling mounting stand, 9... Seedling vertical feeder, 11... Seedling presser, 12... Idle shaft,
13...Rotating body.

Claims (1)

[Scope of utility model registration request] It is equipped with a seedling tray 7 in which a plurality of seedling trays are arranged side by side for separately placing and accommodating a plurality of seedlings with soil, and a seedling vertical feeder 9 is provided in each of the seedling trays. In the structure of the seedling supplying part of the rice transplanter, which is equipped with a seedling holding device 11 corresponding to the placing part and preventing the seedlings from floating, an idling shaft is provided on the back side of the seedling placing table 7 and extends over substantially the entire width of the seedling placing table 7. A plurality of spindles 12 are installed at appropriate intervals in the seedling transfer direction, and protrude from the idling shaft 12 toward the seedling placement surface of the seedling placement stand 7 to engage with each of the plurality of pine-shaped seedlings, respectively. The rotating bodies 13 with protrusions are integrally fixed, and the free rotating shafts 12 to which the rotating bodies 13 with protrusions are fixed are integrally fixed.
This is a structure of a seedling feeding section of a rice transplanter, characterized in that the structure is arranged on the upper side of the action range L of the seedling holding tool 11 in the direction of transferring the seedlings.