JPH04293432A - Leaf pruning apparatus for nursery bed - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to the transplant cultivation of agricultural crops.
This invention relates to a leaf pruning device for a nursery bed that cuts the leaves of the seedlings to the same height when raising seedlings such as onion paper tube seedlings in a paper tube nursery container.

0002

[Prior art] The transplant cultivation of onion seedlings in paper tubes involves filling an unfolded paper tube seedling container with soil, sowing each seed in each paper tube, covering it with soil, placing it in a nursery bed, and raising the seedlings at a constant rate. After raising seedlings for a period of time, the seedlings are separated into individual paper tube seedlings and transplanted to the main field. and,
In order to prevent the seedlings from elongating and falling over during the seedling-raising period, and to suppress water evaporation from the leaf surface immediately after transplanting, the leaves of the seedlings are cut to a predetermined length of about 15 to 20 cm. ing.

[0003] The leaves of the seedlings are cut using a hedge trimmer, scissors, sickle, brush cutter, or the like. The width of the seedbed is usually 2
．． It was about 4 meters long, and to avoid damaging the seedbed, a board was placed over it, and workers were working on the board with hedge trimmers, shears, and sickles. Additionally, when working with a brush cutter, the blade is farther away from the operator, so even if you work carefully, you may not be able to cut the height accurately, and the leaves of the seedlings may be cut too short, which may impede growth. .

[0004] Furthermore, in the transplant cultivation of paper tube seedlings of sugar beet, multiple seeds are sown in each paper tube, and after raising the seedlings for a certain period of time, each paper tube has one seedling, which requires the work of thinning out unnecessary seedlings. It is being done. As shown in Utility Model Application Publication No. 59-4210, the cart on which workers are carried for thinning work at the nursery is equipped with a pair of tires that run on the left and right sides of the nursery, and a nursery between the pair of tires. A work vehicle is known that has a connecting extendable frame on top and a top plate on which a worker is placed.

[0005]

[Problems to be Solved by the Invention] Even if a worker rides on the top plate of the work vehicle of the prior art and cuts the leaves of the seedlings with a hedge trimmer, scissors, sickle, etc. Accurate cutting requires considerable attention and is inefficient.

[0006]Furthermore, if a worker holds a hedge trimmer, scissors, sickle, etc. for a long time during cutting work, the worker's fatigue increases.

[0007] Furthermore, since a brush cutter cannot cut the grass at an accurate height, the grass may be cut too short, which may impede growth.

[0008] The present invention provides a leaf pruning device for seedbeds that accurately and efficiently cuts the leaves of seedlings to a predetermined length and reduces operator fatigue, thereby dramatically expanding transplant cultivation. purpose.

[0009]

[Means for Solving the Problems] A leaf cutting device for a seedbed according to the first aspect of the invention comprises a pair of wheels 3 running on the left and right sides of a seedbed 41.
The machine frame 1 and the machine frame 1 are placed on the seedbed 41 between the pair of wheels 3.
A cutting blade 36 is provided below, and the cutting blade 36 is long in a direction perpendicular to the advancing direction of the machine frame 1 and parallel to the upper surface of the seedbed 41.

The leaf pruning device for seedbeds according to the second aspect of the invention is the one according to the first aspect, wherein the cutting blade 36 is attached to the machine frame 1 so as to be vertically movable.

In the leaf pruning device for seedbeds according to the third aspect of the invention, the cutting blade 36 is rotatably attached to the machine frame 1 by a support rod 30 provided at one end thereof, and can be fixed at a predetermined position. It is according to claim 1.

The leaf cutting device for seedbeds according to the fourth aspect of the present invention is the one according to the first aspect, wherein the cutting blade 36 is attached to the machine frame 1 so that its longitudinal position can be freely adjusted.

[0013] The leaf pruning device for a seedbed according to the fifth aspect of the invention is the one according to the first or fourth aspect, in which the distance H between the pair of wheels 3 is adjustable.

[0014]

[Function] In the invention of claim 1, a pair of wheels 3 running on the left and right sides of the seedbed 41 and a seedbed 4 between the pair of wheels 3 are provided.
1 and a cutting blade 36 below the machine frame 1, and the cutting blade 36 is long in the direction perpendicular to the direction of movement of the machine frame 1 and parallel to the upper surface of the seedbed 41, so that the machine frame 1 can be easily moved. As a result, the leaf portions 42 of the seedling P above the cutting blade 36 are uniformly cut.

In the invention of claim 2, the cutting blade 36 is attached to the machine frame 1.
Since the leaf part 42 of the seedling P is attached so that it can move up and down,
is cut to any predetermined length.

In the third aspect of the invention, the cutting blade 36 is rotatably attached to the machine frame 1 by the support rod 30 provided at one end thereof, and can be fixed at a predetermined position. As this progresses, the leaf portions 42 of the seedlings P in the seedbed 41 are cut until the width of the seedbed 41 is twice the length of the cutting blade 36.

In the invention of claim 4, since the cutting blade 36 is attached to the machine frame 1 so that its longitudinal position can be freely adjusted, the width of the seed bed 41 is slightly wider than twice the length of the cutting blade 36. Even if the leaves 42 of the seedlings P in all the seedbeds 41 are cut off.

In the fifth aspect of the present invention, since the distance H between the pair of wheels 3 is freely adjustable, the pair of wheels 3 can be driven close to the left and right sides of the seedbed 41 even if the width of the seedbed 41 is different.

[0019]

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As the seedlings P to be raised in the seedbed 41, there is shown a paper tube seedling P of onion in a paper tube seedling raising container. This paper tube seedling container uses paper coated with rot-resistant chemicals, and when unfolded, the paper tubes have a hexagonal prism-like opening at the top and bottom, and are neatly glued together with water-soluble glue. Fill this paper tube with soil,
Seeds are sown one by one in individual paper tubes and covered with soil to form a seedbed 41. The size of each nursery bed 41 is approximately 30 cm in length and 1 in width.
．． It is 2m long and approximately 4cm high.

When a large number of seedbeds 41 are installed in a plastic greenhouse 50 and the seedlings are raised for a certain period of 50 to 60 days, the seedlings P grow and their leaves 42 become longer. In addition, the water-soluble glue gradually dissolves when watered to maintain appropriate connection strength during transplantation.

[0022] The width of the vinyl house 50 is usually about 6 m, and when the seedbed 41 is installed inside the vinyl house 50 using a paper cylinder seedling container, there is a passageway in the center of the vinyl house 50 for the passage of workers. Open as 51, 2.
Arrange them closely in two rows about 4m wide. In addition, since the temperature near both walls of the greenhouse 50 is low, the nursery 41
This is a blank space 52 where no space is installed. In this way, nursery 4
The installed length of 1 is approximately 100 m for 5 hectares of seedlings P.

Next, a leaf pruning device for cutting the leaves 42 of the seedlings P in the seedbed 41 to the same height will be described.

The leaf cutting device is provided with a pair of wheels 3 running on the left and right sides of a seedbed 41, a machine frame 1 on the seedbed 41 between the pair of wheels 3, and a cutting blade 36 below the machine frame 1.

The machine frame 1 is made up of two long rectangular steel tubes arranged in parallel over the seedling bed 41 extending from a passage 51 to a space 52 and connected at both ends to form a frame. The machine frame 1 is parallel to the upper surface of the seedbed 41, and a pair of wheel frames 2 having an inverted L shape in front view are provided at both ends of the machine frame 1, and the wheel frames 2 fit into the ends of the machine frame 1.
The amount of fitting is adjustable and can be fixed. The lower part of the wheel frame 2 is a wheel lower frame 2a which is long in the horizontal direction perpendicular to the longitudinal direction of the machine frame 1, and wheel yokes 2b are provided below both ends of the wheel lower frame 2a.

The wheel yoke 2b is provided with a wheel 3 that rotates in the longitudinal direction of the wheel lower frame 2a, and the wheel 3 is locked to rotate freely by a pin 4 inserted through the center of the wheel 3 and the wheel yoke 2b. A recess 3a that fits into the rail 54 is provided on the outer periphery of the wheel 3. The distance H between the pair of wheels 3 at both ends of the machine frame 1 can be adjusted by changing the amount of fitting of the wheel frame 2.

A movable frame 6 is provided approximately at the center of the machine frame 1, and the movable frame 6 can adjust its position in the longitudinal direction of the machine frame 1 and can be fixed by screwing.

A support frame 11 is provided on the movable frame 6, and the movable frame 6
A long support rod 30 in the shape of a round steel tube is provided vertically through the support frame 11. The support rod 30 is locked so that it can freely rotate in the horizontal direction and freely move up and down in the vertical direction.

A vertical movement mechanism 10 is provided within the support frame 11 on the movable frame 6. The vertical movement mechanism 10 includes a vertical movement frame 12 in the shape of a round steel tube that is fitted around the outer periphery of the support rod 30 so as to freely rotate.
A vertically extending rack gear 13 is provided on the front side of the vertically movable frame 12.
will be established. A shaft 15 having almost the same length as the machine frame 1 is provided through the support frame 11 and parallel to the machine frame 1, and the pinion gear 1 is attached to the shaft 15.
4 and mesh the pinion gear 14 and rack gear 13. A pin 31 is provided at the upper end of the vertically movable frame 12 through the support rod 30 in the horizontal direction, and the lower surface of the pin 31 contacts the upper end of the vertically movable frame 12, and when the vertically movable frame 12 moves up and down, the support rod 30 also moves. The vertically movable frame 12 is made to move vertically, and even if the support rod 30 rotates, the vertically movable frame 12 does not rotate. And axis 1
5 rotates, the vertical movement frame 12 moves up and down, and the support rod 30
It also moves up and down.

A pair of bearing frames 5 are provided above both ends of the machine frame 1, and the bearing frames 5 support both ends of the shaft 15. Immediately inward of the bearing frame 5 is a pair of discs 16 fitted and fixed onto the shaft 15.
A plurality of bosses 17 are provided radially inside the disc 16. Immediately inward of the bearing frame 5 is a braking device (not shown) that contacts the outer periphery of the disc 16 to prevent the support rod 30 from moving up and down due to its own weight or the like. A lever 18 that can be fitted from the outside is provided on the boss 17, and when the lever 18 is rotated by hand, the shaft 15 is rotated.

A rotation mechanism 20 is provided on the support frame 11. The rotation mechanism 20 includes a rotation frame 21 in the shape of a round steel tube that is mounted on a support frame 11 and fitted to the outer periphery of a support rod 30 so as to freely move up and down. A long hole 22 is provided in. A pin 32 is provided in the elongated hole 22 so as to pass through the support rod 30 in the horizontal direction, and when the rotation frame 21 rotates, the support rod 3
0 also rotates, so that even if the support rod 30 moves up and down, the rotation frame 21 does not move up and down due to its own weight.

The lower part of the rotating frame 21 is a rotating disk frame 21a in the shape of a horizontal disk, and a pair of upright pieces 23 are provided on the rotating disk frame 21a in the direction of both wheel frames. A pair of levers 24 are provided from the upright piece 23 in the direction of the wheel frame 2, and the lever 24 has one end thereof and a pin 2 fitted horizontally through the upright piece 23.
5 allows it to rotate freely in the vertical direction and is locked so that it does not move in other directions. Then, when the lever 24 is rotated in the horizontal direction, the rotation frame 21 and the support rod 30 are rotated together.

A pair of lever receivers 26 are provided on the support frame 11 in the direction of the rotating disc frame 21a and the outer wheel frame 2, and the upper end of the lever receiver 26 corresponding to the lever 24 has a recess into which the lever 24 fits. A location 26a is provided. If the levers 24 fit into the recesses 26a of the lever receiver 26 due to their own weight, they will not be able to rotate in the horizontal direction, but if the pair of levers 24 are lifted by hand and removed from the recesses 26a, they can rotate freely.

A bracket 34 is provided at the lower end of the support rod 30 below the machine frame 1, and an elongated cutting blade frame 35 is provided parallel to the machine frame 1 from the bracket 34 toward the wheel frame 2 on one side. Two thin and long cutting blades 36 are provided on the lower surface of the cutting blade frame 35.
The cutting blade 36 is provided with a ridged blade 36a protruding in the horizontal direction on one side perpendicular to the longitudinal direction of the cutting blade 36,
A large number of ridge blades 36a are arranged in the longitudinal direction of the cutting blade 36. In other words, the cutting blade 36 is long in a direction perpendicular to the advancing direction of the machine frame 1 and is parallel to the upper surface of the seedbed 41. The length of the cutting blade 36 is 1.2 m, which is half the width of the installed seedbed 41. The cutting blade 36 is attached to the cutting blade frame 35 so that it can reciprocate by a predetermined distance in its longitudinal direction.
The leaf part 42 of the seedling P is cut by using the following method.

An auxiliary rod 37 is provided from above the bracket 34 of the support rod 30 to the tip of the cutting blade frame 35 to prevent the cutting blade frame 35 and the cutting blade 36 from bending or swinging.

A motor frame 33 is provided on the opposite side of the support rod 30 from the auxiliary rod 37, and a motor 38 is attached to the motor frame 33 with its shaft end facing downward. A drive mechanism 40 for reciprocating the cutting blade 36 using a crank mechanism is provided below the shaft end of the electric motor 38, and the electric motor 38 and the drive mechanism 40 are connected to a shaft coupling 39.
When the electric motor 38 rotates, the cutting blade 36 moves back and forth. Although not shown, electric wires and appropriate switches are connected to the electric motor 38.

Next, the method of use will be explained.

A long and narrow board 53 is laid between the passage 51 and the seedbed 41 in both spaces 52 in the vinyl house 50, and a rail 54 with an equilateral angle bar facing down is laid on top of it. rail 5
The heights of the rails 54 are made as horizontal as possible, and the intervals between the rails 54 are also made as same as possible.

The distance H between the pair of wheels 3 is adjusted to match the distance between the rails 54 by adjusting the amount by which the wheel frame 2 fits into the machine frame 1.

Place the leaf-cutting device on the rail 54 at one end in the longitudinal direction of the desired row of the seedbed 41 in which the leaf-cutting device is installed, and move the pair of levers 2 so that the tips of the ridges 36a of the cutting blades 36 face in the direction of travel.
4, it is rotated around the support rod 30 and fixed. The height of the cutting blade 36 from the seedbed 41 is adjusted by rotating the lever 18 in accordance with the cutting length of the leaf portion 42. if,
If the tip of the cutting blade 36 does not fit the edge of the seedbed 41,
The moving frame 6 is moved along the machine frame 1 for adjustment.

Turn on the electric motor 38 and cut the cutting blade 36.
When the operator pushes the machine frame 1 away, the cutting blade 3
The leaf part 42 of the seedling P above 6 is cut off. The operator monitors the cutting situation and makes appropriate adjustments during the work.

When the opposite end of the row of seedbeds 41 in the longitudinal direction is reached, the work is stopped and the support rods 30 are moved by the pair of levers 24.
The cutting blade 36 is rotated 180 degrees around and fixed,
Continue the cutting work on the way back.

If the width of the seedbed 41 is wide and there is some uncut material left after the back and forth cutting operation, move the movable frame 6 along the machine frame 1 so that the tip of the cutting blade 36 is aligned with the end of the uncut seedbed 41. and move it, then do the remaining cutting work.

In the above embodiment, the cutting blade 36 includes a large number of ridge blades 36a that are arranged in the longitudinal direction and move back and forth, but any blade that can cut the leaves 42 of the seedling P, such as a rotary blade, may be used.

Furthermore, although the mechanism 10 for vertically moving the cutting blade 36 is shown in which the lever 18 is manually rotated using the rack gear 13 and the pinion gear 14, an appropriate method such as an electric cylinder may be used.

Furthermore, although the rotating mechanism 20 for the cutting blade 36 is shown in which the pair of levers 24 are manually rotated, any suitable method such as a mechanism using an electric motor and an electromagnetic brake may be used.

Further, the rotation of the cutting blade 36 is fixed using the support rod 3.
Although an example has been shown in which the rotation at 0 is fixed, the tip of the cutting blade 36 may be fixed.

Further, although an example has been shown in which the operator pushes the machine frame 1 to carry out the cutting operation, it is also possible to transmit appropriate power to the wheels 3 and make them run.

Furthermore, although an example has been shown in which the rail 54 is laid in the passage 51 and both spaces 52, the rail 54 is laid only in the passage 51, and the wheels 3 on the space 52 side are run on the plate 53. Also good.

[0050]

According to the invention as claimed in claim 1, since the cutting blade is long in the direction perpendicular to the advancing direction of the machine frame and parallel to the top surface of the seedbed, the distance from the top surface of the seedbed to the cutting blade is constant, and the work The leaves of the seedling above the cutting blade can be cut accurately and uniformly by advancing the machine frame without depending on the attentiveness of the operator. In addition, since the leaf portion with a width corresponding to the length of the cutting blade is cut at once,
Cutting work can be done efficiently.

According to the invention of claim 2, since the cutting blade is attached to the machine frame so as to be able to move up and down, the cutting blade can be moved up and down at the discretion of the operator to cut the leaves of the seedlings to a predetermined length. Can be easily cut.

According to the third aspect of the invention, the cutting blade is rotatably attached to the machine frame by a support rod provided at one end of the cutting blade,
Moreover, since it can be fixed in a predetermined position, it is possible to cut the leaves of the seedlings until the width of the seedbed is twice as wide as the length of the cutting blade, simply by rotating the cutting blade and moving the machine frame back and forth. The long cutting blade makes it easy to cut large areas of seedbeds.

According to the invention of claim 4, since the cutting blade is attached to the machine frame so that its longitudinal position can be freely adjusted, the width of the seedbed can be adjusted to the length of the cutting blade by moving the cutting blade in the longitudinal direction. The leaves of all the seedlings can be cut even if the width is more than twice the width, and even if the width of the seedling bed is different, cutting work of a wide area of the seedling bed can be easily done with a cutting blade of a short length.

According to the invention of claim 5, since the distance between the pair of wheels is adjustable, even if the width of the seedbed is different, the pair of wheels can be run close to the left and right sides of the seedbed, and it can be used in a narrow greenhouse. Suitable for nurseries set up in

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a leaf cutting device for a nursery.

FIG. 2 is a plan view thereof.

FIG. 3 is a side view thereof.

FIG. 4 is a front view of the greenhouse.

FIG. 5 is a front view of the cutting blade moved upward.

FIG. 6 is a plan view of the cutting blade while it is being rotated.

FIG. 7 is a plan view of the cutting blade rotated and fixed.

FIG. 8 is a front view in which the cutting blade is moved in the longitudinal direction and the distance between the pair of wheels is widened.

FIG. 9 is a partial front view showing the vertical movement mechanism and rotation mechanism.

FIG. 10 is a partial side view showing a lever of the vertical movement mechanism.

FIG. 11 is a partial front view showing the wheel.

FIG. 12 is a partial side view showing the rotation mechanism.

FIG. 13 is a partial plan view showing the cutting blade.

[Explanation of sign]

1 Machine frame 3 Wheels 30 Support rod 36 Cutting blade 41 Nursery H Wheel spacing

Claims (5)

[Claims] [Claim 1] A pair of wheels that run on the left and right sides of a nursery;
A leaf pruning device for seedbeds that has a machine frame on the seedbed between a pair of wheels and a cutting blade below the machine frame, the cutting blade being long in a direction perpendicular to the advancing direction of the machine frame and parallel to the top surface of the seedbed. 2. The leaf pruning device for a seedbed according to claim 1, wherein the cutting blade is attached to the machine frame so as to be movable up and down. 3. The leaf pruning device for a nursery according to claim 1, wherein the cutting blade is rotatably attached to the machine frame by a support rod provided at one end thereof, and can be fixed at a predetermined position. 4. The leaf pruning device for a seedbed according to claim 1, wherein the cutting blade is attached to the machine frame so that its longitudinal position can be freely adjusted. 5. The leaf cutting device for a seedbed according to claim 1 or claim 4, wherein the distance between the pair of wheels is adjustable.