JPH0538564Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is designed to remove the seeds grown in the nursery box from the nursery box and place them on a rice transplanter. This invention relates to a root cutting device for a seedling box that prunes roots.

"Conventional Technology" To obtain seedlings by sowing seed rice and transplanting rice using a rice transplanter, seedlings with soil grown in seedling boxes are used. In other words, if you spread a thin layer of soil in a seedling box with a bed plate with many small holes, sow seed rice on top of it, and raise the seedlings, the roots of the seedlings will grow densely and intertwine, and when you take out the seedlings from the box, they will become individual. The seedlings appear as if they had grown from a single pine, forming soil-attached seedlings, and these pine-like soil-attached seedlings are placed on a rice transplanter and used for rice planting.

However, the above-mentioned dense seedling roots grow not only inside the seedling box, but also from the numerous small holes provided in the bed for drainage and ventilation, and become intricately intertwined on the bottom surface of the seedling box. In this case, it is not possible to take out the seedlings with soil from the nursery box.

Therefore, in the past, these seedling roots were pruned by input using a suitable knife.

``Problems that the invention aims to solve'' However, the task of removing seedling roots that have grown from the bottom of the seedling nursery box by inputting data is cumbersome and time-consuming, the results after pruning are uneven, and problems occur during operation of the rice transplanter. It was also the cause.

The present invention was developed by focusing on the problems in the conventional technology, and provides a root cutting device for a seedling box that can quickly and evenly prune the roots of seedlings that have grown on the bottom surface of the seedling box. The purpose is to

"Means for Solving the Problem" The gist of the present invention to achieve this purpose is to provide a support stand that exposes and supports the lower surface of the bed of the seedling box;
A root cutting unit comprising a mesh protective cover that holds the seedling roots sprouting on the lower surface of the bed plate and protects a rotary cutting blade for pruning the seedling roots, and the supporting stand and the root cutting unit are moved relative to each other. The present invention relates to a root cutting device for a seedling nursery box, which comprises a means for moving the seedlings.

``Action'' Place the seedling nursery box on a support stand. On the other hand, the rotary cutting blade of the cutting blade unit is brought close to the bottom surface of the bed of the seedling box,
Place it at one end of the nursery box.

If the seedling box side is movable, moving it on the support stand while driving the cutting blade unit will cause the seedling box to move.
As the seedling roots enter the mesh of the protective cover, they are protected, and the rotary cutting blade of the cutting blade unit prunes the seedling roots while rotating.

In the case where the cutting blade unit is moved, the cutting blade unit moves while rotating the cutting blade,
Seedling roots that have grown on the underside of the bed of the seedling nursery box are held in the mesh of the protective cover and pruned.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 to 6 show embodiments of the present invention.

As shown in FIG. 1, the root cutting device 10 for seedling box is
It consists of a support stand 11 on which the seedling raising box M is movably mounted, a driving means 20 for driving the seedling raising box M, and a root cutting unit 30 for pruning the roots of the seedlings that have grown on the lower surface of the bed board s of the seedling raising box M. It's on.

The support stand 11 is made up of vertically long guide members 13 placed horizontally on legs 12 at the front and rear ends.

As shown in FIG. 3, the guide member 13 is formed with a rail portion 13a that freely slides and guides the seedling growing box M, and also has a guide roller 14 that movably presses the flange f of the seedling growing box M. is placed in the right place. The drive means 20 is comprised of a pair of left and right pushing chains 22 that span sprockets 21a and 21b disposed at the front and rear ends of the guide member 13, a drive chain 23 that transmits power, and a drive motor 24. There is.

As shown in FIGS. 3 and 4, the pushing chain 22 has claw links 22a that engage the flange f of the seedling box M at intervals slightly longer than the length of the seedling box M.
are placed in symmetrical positions.

The root cutting unit 30 is a root cutting unit 3 attached to the motor.
1 and a motor-less root cutting unit 32, which are arranged in pairs as shown in FIG. 2 so that the lower surface of the bed s of the seedling box M can be thoroughly pruned.

The motor-based root cutting unit 31 consists of a cutting blade 33, a protective cover 34 for the cutting blade, a drive motor 35, and a drive pulley 36. 33, covered with a protective cover 34, and a driven pulley 37 corresponding to the driving pulley 36 is attached to the lower end.

In addition, on the guide member 13, when the feeding of the seedling box M is not carried out for a predetermined period of time or more, a root cutting unit 3 is installed.
Sensor 15 for sending a signal to automatically stop
is provided.

Next, the effect will be explained.

When the drive motor 24 is started, the drive chain 2
Upon receiving power from 3, the upper part of the push chain 22 starts to move forward.

Since the pushing chain 22 is provided with claw links 22a that engage the flanges f of the seedling box M at intervals slightly larger than the length of the seedling box M, the guide member 13
The seedling growing box M placed on the rail portion 13a of the seedling box M is hooked on the claw link 22a and moves forward, and the root cutting unit 30 cuts off the roots of the seedlings that have grown on the lower surface of the bed board s.

As shown in FIG. 6, the cutting blade 33 rotates in a horizontal plane and applies an upward force to the seedling box M during the pruning process, but is movably pressed downward by the guide roller 14. Therefore, sufficient pruning action is achieved.

A timer is activated when one seedling box M passes by a signal from the sensor 15 provided on the guide member 13, and if no seedling box M is fed onto the guide member 13 for a certain period of time, the seedling box M is The root cutting device 10 stops.

In the embodiment, the seedling growing box M is moved, but it is of course possible to fix the seedling growing box M and make the root cutting unit movable.

If the root cutting unit is made movable, the movement mechanism of the root cutting unit will be a little more complicated, but the supporting stand will only need to be slightly longer than the length of the seedling box, and it will be easier to move the root cutting unit. Place the support stand in the seedling box 2.
It takes up less space compared to one that requires more than twice the length.

In addition, a motorized root cutting unit such as the root cutting unit 31 of the embodiment may be fixedly mounted on a small and movable scissor lifter, and the roots can be freely moved in and out of the lower part of the seedling box on the fixed stand. It can also be made to have a cutting effect.

``Effect of the invention'' According to the root cutting device for seedling boxes according to the present invention, the protective cover of the cutting blade is placed below the seedling box exposed on the bottom surface of the bed and placed on a support stand in the form of a mesh. Since a cutting unit is provided and the root cutting unit and the seedling nursery box are configured to be movable relative to each other, root cutting work can be performed reliably, easily, and efficiently.Moreover, root cutting is done evenly, resulting in uniform quality of roots. This allows seedlings with good soiling to be obtained, prevents malfunction of the rice transplanter, and contributes to improving the efficiency of the entire agricultural work.

[Brief explanation of the drawing]

Figures 1 to 6 show examples of the present invention, with Figure 1 being a front view of the root cutting device for a seedling box, Figure 2 being a perspective view of the main parts, and Figure 3 being a pushing mechanism for the seedling box. FIG. 4 is a perspective view of the pushing chain, FIG. 5 is a front view of the root cutting unit, and FIG. 6 is a perspective view of the motor root cutting unit. M... Seedling box, f... Flange of the seedling box, s... Floor plate of the seedling box, 10... Root cutting device for the seedling box, 11...
... Support stand, 12 ... Legs, 13 ... Guide member, 13
a...Rail part, 14...Guide roller, 20...
Drive means, 21a... Sprocket, 21b... Sprocket, 22... Pushing chain, 22a... Claw link, 24... Drive motor, 30... Root cutting unit, 31... Root cutting unit at base of motor, 32...
Root cutting unit without motor, 33... Cutting blade, 35...
...Drive motor.

Claims (1)

[Scope of utility model registration request] A support base that exposes and supports the lower surface of the bed of the seedling nursery box, and a mesh-like protective cover that holds the seedling roots that have grown on the lower surface of the bed and protects the rotary cutting blade that prunes the seedling roots. A root cutting device for a seedling nursery box, comprising a cutting unit and a moving means for relatively moving the support stand and the root cutting unit.