JPH054041B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transplanting device that uses seedlings grown in a seedling-growing container in transplant cultivation of agricultural crops.

[Conventional technology]

Although there are various methods for transplant cultivation, for example, a method using paper tube seedlings is recognized as having great advantages. These paper tube seedlings are
Normally, a seedling raising container is used in which a large number of paper cylinders are arranged in an orderly manner and connected so that they can be separated, the container is filled with soil, seeds are sown, the seedlings are raised, and the seedlings are separated from the paper cylinders into individual paper cylinder seedlings and transplanted. Paper tubes have been developed that can be transplanted while holding the soil securely, and that decompose within a short period of time after transplantation, so they are expected to be used for a variety of agricultural products.

On the other hand, as the above-mentioned paper tube seedling transplanting machine, one that utilizes natural fall is desired from the viewpoint of high speed. In other words, it was originally confirmed that slight variations in the spacing between plants and disturbances in planting posture had little effect on yield, but transplant cultivation using paper tube seedlings is expected to dramatically increase yield. This makes it possible to adopt the natural fall method by making the accuracy of plant spacing and accuracy of planting posture, etc., which were conventionally required of transplanters, secondary. Paper-wrapped seedlings are much heavier, easier to fall, and easier to control their posture.Furthermore, paper-wrapped seedlings are easy to separate from lined seedlings, making them suitable for high-speed separation.

[Problem that the invention seeks to solve]

As mentioned above, when transplanting by the dropping method, a planting groove is formed in the field using a trench opener, and paper tube seedlings are dropped into the planting groove immediately after the trench opener, and the seedlings are not immediately covered with soil. The soil is covered with soil, but the flow of soil at this time is from the rear side, and a force that pushes the paper tube seedlings forward acts. It was pushed forward and buried at the bottom of the planting ditch.

The present invention aims to solve the above-mentioned problems, provide a high-capacity, high-performance transplanting device, and dramatically expand transplant cultivation.

[Means for solving problems]

The transplanting device of the present invention is a transplanting device that drops and transplants individual seedlings grown in a seedling container, and includes a trench opener that is provided at the bottom of the machine frame and forms a planting trench that has a slope on at least one side. A drop pipe is installed at the rear upper part of this groove opener, and has an inlet at the top end that is wide, and gradually narrows as it goes downwards, and a discharge port is formed at the bottom end. and a guide body whose tip is connected to the rear position of the furrow opener and guides the seedlings from the discharge port of the drop pipe to the slope of the planting groove formed by the furrow opener.

[Effect]

The present invention receives seedlings falling within a certain width at a wide entrance at the upper end of the drop tube, guides them to a discharge port through a drop tube whose width gradually becomes narrower as it goes downward, and discharges them. A guide plate guides the plants to the slope on one side of the planting trench made with a trench opener, and the plants are placed in a row and covered with soil before being transplanted.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

4 and 5 show a paper tube-aligned seedling 1 used in the transplanting device of the present invention. This paper tube-aligned seedling 1 has a large number of square tube-shaped paper tubes arranged in an orderly manner in the left-right and front-back directions. Seedling containers are separably connected using water-soluble glue, the containers are filled with soil, seeds are sown, the seedlings are raised, and the seedlings are separated into individual paper tube seedlings 2 and transplanted.

Next, the transplant device will be explained.

In Fig. 1, 11 is a machine frame, and this machine frame 11
A tractor connecting portion 12 is provided at the front upper part of the machine frame 11, and groove openers 13 are provided on both sides of the front lower part of the machine frame 11.
are attached to the machine frame 11, and suppression wheels 14 are supported by shafts 15 on both sides of the rear of the machine frame 11.

A seedling conveyor 21 is provided at the upper part of the machine frame 11 and is inclined forward and downward.
A receiving plate 22 is connected to the front part of the seedling plate 22, and a seedling regulating device 23 is provided to the front part of the receiving plate 22. As shown in FIG. 3, this seedling regulating device 23
A rotating shaft 24 is horizontally mounted on the rotating shaft 24, and a large number of regulating plates 25 are fixed to the rotating shaft 24 at predetermined intervals at the center thereof. The outer circumferential surface of each regulating plate 25 has a spiral curve, and a separator 26 is formed at the end of the maximum radius, and a needle 27 projects from the end surface of the separator 26 at an angle with respect to the rotation direction. It is set up. Each of the regulating plates 25 is divided into a plurality of groups (in the embodiment shown in FIG. 3, two groups), and each group is sequentially arranged from one end with the same phase difference.

Each regulation plate 25 is provided at the front of the seedling conveyor 21.
A seedling holding device 28 consisting of an approximately inverted U-shaped spring is provided on one side, and
A seedling scraping body 29 is provided at the bottom of each regulating plate 25 of the seedling regulating device 23.

Then, the shaft 15 of the suppressing wheel 14 and the rotating shaft 24 of the regulating plate 25 of the seedling regulating device 23, and the rotating shaft 24, the seedling conveyor 21, and the seedling scraping body 29 are connected by an interlocking mechanism 30. When the suppression wheel 14 rotates, each regulating plate 25 and the seedling scraping body 29 rotate, and the conveyor belt of the seedling conveyor 21 rotates.

A seedling guiding device 31 is provided below the seedling regulating device 23 and above the rear of the trench opening device 13 . As shown in FIGS. 1 and 2, this seedling guide device 31 is provided with drop pipes 32 on both sides of the machine frame 11.
is installed in an inclined manner. This drop tube 32
The width of the inlet 33 at the upper end is widened, and the width is gradually narrowed toward the bottom, and the outlet 34 at the lower end is slightly wider than the height of the paper tube seedling 2.
A guide piece 35 is provided extending from the front surface and both side surfaces of the discharge port 34 . The distance between the guide pieces 35 on both sides is gradually narrowed, and the end is formed to be slightly wider than the thickness of the paper tube seedling 2, and a notch opening 36 is provided on the back surface below the discharge port 34, and the guide piece 35 has a substantially V-shaped cross section with an opening at the rear.

Further, at the lower end of each of the drop tubes 32, a curved guide plate 37 whose tips are connected to each other at a rear position of each of the groove openers 13 is connected.

Next, the operation will be explained.

When a tractor is connected to the tractor connection part 12 at the front of the machine frame 11 via a three-point link mechanism and indexed, a V-shaped planting groove 41 is opened in the field by the groove opener 13.
is formed, and the suppression ring 14 moves forward while rotating.

At the same time, the rotation of the suppression wheel 14 is transmitted to the rotating shaft 24 of the seedling regulating device 23, rotating each regulating plate 25, rotating each seedling scraping body 29, and rotating the conveyor belt of the seedling conveyor 21. go

As a result, the paper tube-aligned seedlings 1 placed on the seedling conveyor 21 are sequentially sent forward, and the front surface of each paper tube seedling 2 in the front row is pressed against the outer peripheral surface of each corresponding regulating plate 25 with a constant pressure. The paper tube seedlings 2 in the front row are transferred while being pressed to regulate the front position of each paper tube seedling 2.

The outer peripheral surface of the regulating plate 25 has a spiral curve, and the radius gradually decreases in proportion to the rotation angle, so by rotating at a constant speed, the radius decreases at a constant speed, and the seedling conveyor The paper cylinder seedlings 2 in the front row of the paper cylinder aligned seedlings 1 sent in by the paper cylinder seedlings 1 are moved back at a constant speed while regulating the front position. In this way, when one paper tube seedling 2 is sent to a predetermined position, the paper tube seedling 2 is located at the minimum radius part of the regulation plate 25, and the end surface of the separating body 26 is aligned with the paper tube seedling 2. The needle 27 of the separation body 26 hits the upper surface and is pushed downward, and at the same time the needle 27 of the separation body 26 pierces the soil of the paper-wrapped seedling 2, and when it pierces, the paper-wrapped seedling 2
While pulling the upper part of the paper envelope in the horizontal direction, the paper envelope is separated downward from the aligned seedlings 1.

Further, each regulation plate 25 of the seedling regulation device 23 controls each paper tube seedling 2 included in the front row of the paper tube aligned seedlings 1.
By arranging the separation points sequentially from one end with the same phase difference, the separation points are arranged in a spiral pattern, and the paper tube seedlings 2 are separated one by one from one end. be done. In addition, the pitch of the spiral is equal to the length of one row in the front row when separating paper tube seedlings 2 one by one from the front of paper tube lined seedlings 1, and the length of one row in the front row when separating two seedlings 1 at a time.
By setting the length to 1/2 of the length of the column, it is possible to separate two lines at a time as shown in FIG. 3, and similarly, by arranging the regulating plate 25, three or more lines can be separated.

In addition, the individual paper tube seedlings 2 in the front row of the paper tube aligned seedlings 1
Seedling holding devices 28 are arranged against the seedlings to press down the front surface of the paper tube seedlings 2 and prevent the neighboring paper tube seedlings 2 to be separated from being drawn out and separated irregularly.

Furthermore, when the paper tube seedlings 2 separated from the paper tube-aligned seedlings 1 reach the lower position of the regulation plate 25, the seedling scraping body 29 rotating at a constant speed touches the upper surface of the paper tube seedlings 2 stuck in the needles 27. Then, the paper tube seedling 2 is pulled out from the needle 27 and thrown into the drop tube 32. This drop tube 32
accepts the paper tube seedlings 2 falling within a certain width from the wide entrance 33 at the top, slides the inserted paper tube seedlings 2 along the sloping bottom surface, and as it goes downward. By gradually narrowing the width, the paper tube seedlings 2 that fall are concentrated, and the paper tube seedlings 2 that fall through the drop tube 32 and fly out from the discharge port 34 at a constant speed are directed to the guide pieces 35 on both sides. Therefore, it will be further regulated. At this time, since the width of the discharge port 34 is made slightly wider than the length of the paper tube seedling 2, even if the paper tube seedling 2 falls down due to accidental conditions, no blockage will occur.

In addition, since the rear surface between the guide pieces 35 on both sides of the discharge port 34 is open and has a substantially V-shaped cross section, even if the paper tube seedling 2 falls while falling and passes through the discharge port 34. , falling backward and downward from the notch opening 36 and being prevented from being blocked.

Then, the paper tube seedlings 2 discharged from the drop tube 32 are laterally changed in direction along the curved surface of the guide plate 37, and furthermore, the paper tube seedlings 2 are placed on one side of the V-shaped planting groove 41 due to inertia. It slides down along the slope 41a, collides with the opposite slope 41b, and stops. In this state, the forward motion that had been performed together with the machine frame 11 until then is reduced by friction with the slope 41b, and the machine frame 11 is left in place. In this way, the slope 4 of the planting groove 41
The paper tube seedlings 2 were placed one after another in 1a, and then the suppression wheel 14 ran beside the planting groove 41 to break up the soil that had piled up on the side, and the seedlings were placed on the wall of the planting groove 41 and lined up. Cover paper tube seedlings 2 with soil and press down.

In addition, in the above embodiment, the separation body 26 is integrally formed on each regulation plate 25 of the seedling regulation device 23;
This separation body 26 is formed separately from each regulation plate 25,
The paper tube seedlings 2 may be pressed and separated in conjunction with the regulation plate 25. In addition, the suppression wheel 1 is used as a driving source.
4, a separate prime mover may be used. Also,
The planting groove 41 formed by the groove opener 13 may have a V-shape with slopes on both sides, or a groove with a slope on one side and a substantially vertical surface on the other side, or may have a slope on at least one side. It is fine as long as it is something.

〔Effect of the invention〕

According to the present invention, seedlings falling within a certain width are received at the wide entrance at the upper end of the drop tube,
A drop pipe whose width gradually narrows as it goes downwards is used to guide the plants to the discharge port, and a guide plate guides them to the slope on one side of the planting groove made by the trench opener, where they are placed and placed against the ground. By covering the seedlings with soil before transplanting, even relatively short seedlings can be stably and reliably transplanted without falling over and burying themselves in the bottom of the planting trench.

Transplant cultivation was also introduced for crops that had traditionally been directly sown, resulting in dramatic improvements in agricultural management.
In addition, the results of transplantation can be fully demonstrated even in crops that have been transplanted in the past.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the device of the present invention, FIG. 2 is a rear view of the seedling guiding device shown in FIG. 1, and FIG. 3 is the seedling regulating device shown in FIG. 1. FIG. 4 is a plan view of seedlings arranged in paper tubes, and FIG. 5 is a slope view thereof. 2...Seedling, 11...Machine frame, 13...Ditch opener, 3
2...drop pipe, 33...inlet, 34...discharge port,
37... Information board, 41... Planting groove, 41a... Slope.

Claims (1)

[Scope of Claims] 1. A transplanting device that drops and transplants individual seedlings grown in a seedling container, comprising: a trench opener that is provided at the bottom of the machine frame and forms a planting trench that has a slope on at least one side; A drop pipe is installed at the rear upper part of this groove opener, and has an inlet at the top end that is wide, and the width gradually narrows as it goes downwards, and a discharge port is formed at the bottom end. A transplanting device comprising: a guide plate whose tip is connected to a rear position of the furrower and guides the seedlings from the outlet of the drop pipe to the slope of the planting groove formed by the furrower.