JP2002176814A - Seedling planting bill of seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct the seedling planting posture by changing angular apertures of a front and a rear bill pieces of a seedling planting bill. SOLUTION: The constitution of this seedling planting bill 3 is characterized in that the angular aperture of the front bill piece 1 and the angular aperture of the rear bill piece 2 are different in a seedling transplanter capable of closing the front and rear bill pieces 1 and 2 in the top dead center part and receiving feeding of a seedling A and opening on a soil surface in the bottom dead center part, forming a planting hole and carrying out planting of the seedling A by lifting and lowering of the planting bill 3 composed of the front bill piece 1 and the rear bill piece 2 capable of operating to the front and rear, opening and closing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling beak of a seedling transplanter, and can be used for a seedling transplanter having a planting beak for transplanting vegetable seedlings and the like.

[0002]

2. Description of the Related Art In a seedling planting beak having a pair of front and rear beak pieces, the front and rear beak pieces are pivoted back and forth by a predetermined angle to be opened to form a planting hole in a soil surface, and seedling is planted. Let it do.

[0003]

The above-mentioned conventional seedling beak is:
Since the front and rear beaks are pivoted forward and backward by the same angle and open, depending on the operating conditions of the seedling beak, the locus of planting at the tip may change greatly, and the seedling placement posture may be disturbed. The planting locus, which is the operating locus of the tip of the seedling beak, is determined and drawn according to the traveling speed of the vehicle body and the planting speed of the seedling itself. On the other hand, if the opening and closing action of the front and rear beak pieces is added, the planting trajectory changes in front and rear, such as bending or distortion, so that the planting hole is largely deformed in the front and rear direction, and seedlings are easily disturbed. Become. When seedlings are planted on the soil surface on which the multi-film is laid, the multi-film is often disturbed by the seedlings.

[0004]

According to a first aspect of the present invention, the upper dead center portion is formed by raising and lowering a planting beak 3 comprising a front beak piece 1 and a rear beak piece 2 which are opened and closed by operating back and forth. In the seedling transplanter, the seedling A is supplied by closing the front and rear beak pieces 1 and 2 and the seedling A is opened and the seeding hole C is opened in the soil surface B at the bottom dead center. The opening angle α of the front beak 1 and the opening angle β of the rear beak 2 are different from each other.

The invention according to a second aspect of the present invention is to raise and lower a planting beak 3 comprising a front beak piece 1 and a rear beak piece 2 which are opened and closed by operating back and forth, so that the front and rear beaks are formed at the top dead center. The seedling A is closed and the seedling A is supplied, and the seedling A is opened on the soil surface B at the bottom dead center to form a planting hole C for planting the seedling. Of the seedling planting beak, characterized in that the seedlings are shifted to the root of the seedling A already planted by opening.

According to a third aspect of the present invention, the planting beak 3 comprising a front beak piece 1 and a rear beak piece 2, which are opened and closed by being operated back and forth, moves up and down at the top dead center. The seedling beaker 3 is closed in the seedling beaker 3 in which the seedlings A are supplied while the pieces 1 and 2 are closed and the seedling A is opened and the seedling hole C is formed on the soil surface B at the bottom dead center. The closing cam 4 whose closing operation is adjustable at the upper dead center side and the opening cam 5 whose opening operation is adjustable at the lower dead center side are separately provided.

[0007]

According to the first aspect of the present invention, the planting beak 3 descends while holding the seedling A, pierces the soil surface B to a predetermined depth, and moves forward at the bottom dead center. The rear beak pieces 1 and 2 are opened back and forth at predetermined angles α and β to form the planting hole C, and the seedlings A held therein are planted while being left in the planting hole C. The attachments 1 and 2 are raised in an open state to plant seedlings.

Here, when correcting the planting posture,
The opening angle α or β of the posterior planting pieces 1 and 2 is adjusted. By fixing the opening angle α of the front beak 1 to zero or making it smaller and setting the opening angle β of the rear beak 2 larger than this opening angle α, the posture of the planted seedling A is The seedlings A can easily fall down, and the seedlings A can be prevented from falling forward. Conversely, by fixing the opening angle β of the rear beak piece 2 to a state of zero or making it smaller, and making the opening angle α of the front beak piece 1 larger than this opening angle β, the seedling A It is easy to fall down,
Seedling A can be prevented from falling down.

In this manner, the seedling placement posture can be corrected, and a stable planting posture can be obtained. Moreover, in any case, the opening interval between the front and rear beaks 1 and 2 can be kept large, and the seedling can be planted smoothly. Also, when planting seedlings on the soil surface of the multi-film laying, adjust so that the front and rear beak pieces 1 and 2 do not greatly deviate from the planting locus in the front-rear direction to reduce the disturbance of the multi-film. Can be.

According to the second aspect of the present invention, when the planting hole C is formed at the bottom dead center by increasing the opening angle β of the rear beak piece 2, the rear edge of the planting hole C in the soil is formed. Is pushed back, and the soil is buried in the planting hole of the planted seedling and cultivated, so that the planted seedling can be prevented from falling forward.

According to a third aspect of the present invention, the closing operation on the top dead center side of the planting locus of the planting beak 3 is adjusted by the closing cam 4, and the opening operation on the bottom dead center side is the opening cam. Adjusted by 5. For this reason, when the size of the seedling or the length of the planting beak changes, in order to adjust the operation timing by the different closing cam 4 and opening cam 5 on the upper and lower dead center side,
The adjustment can be performed accurately and easily.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to a vegetable seedling beak in the form of a planting beak that opens and closes back and forth. The seedling beak is attached to the rear of a riding vehicle such as a tractor or a walking vehicle such as a hand tractor, and receives a seedling supplied from a seedling supply device to form a planting hole on the soil surface while descending. Planting seedlings. This schematic configuration will be described with reference to the drawings.

The vehicle body 6 is of a hand tractor type having drive wheels 8 which can be moved up and down via wheel transmission cases 7 on both left and right sides and a handle 9 at the rear. A front wheel 10 is provided at a front portion of the vehicle body 6, and an engine 11 is mounted on an upper portion of the vehicle body 6. This drive wheel 8
Is raised and lowered by a hydraulic cylinder 13 which is expanded and contracted by hydraulic pressure via a lift control valve which is switched by a ground contact sensor 12 slidingly contacting the ridge soil surface B to maintain the height of the vehicle body 6 on the ridge soil surface B constant. .

A planting link 15 having a planting beak 3 is provided at the upper part of the vehicle body 6 via a transmission case 14 to be transmitted, and a seedling cup 16 for supplying a seedling A can be arranged and turned. The turntable 17 is supported and interlocked.
In addition, an auxiliary seedling stand 18 for accommodating auxiliary seedlings is provided in front of the turntable 17. The driver can replenish the seedling cup 16 on the turntable 17 while taking out the auxiliary seedlings on the auxiliary seedling stand 18 and continue seedling planting.

The planting beak 3 at the tip is moved up and down along the planting locus D by the planting link 15 to receive the seedling A supplied from the seedling cup 16 at the top dead center, and to soil at the bottom dead center. The seedling A can be planted in the planting hole C while the planting hole C is formed in the surface B. A compression ring 19 is provided on the rear side of the planting beak 3 so that the planting hole C after planting can be crushed to fix the planting posture.

The planting locus D by the planting beak 3 indicates that when seedlings are supplied from the seedling cup 16 at the top dead center, a constant cycle T2, in which the intermittent drive T2 is temporarily stopped T1 as shown in FIG.
Repeat with. By changing the stop time T1 or the drive time T2 to be longer or shorter, the interval between plantings can be changed.

The planting link 15 is a pair of front and rear parallel link mechanisms, the front end of which is supported by a swing arm 20.
The central portion is driven by the crankshaft 21 and the connecting link 22 is connected by link pins 23 and 24 across the rear end. By rotating each link shaft 21, the planting link 15 is driven in a double crank mechanism form so that the connecting link 22 is moved up and down in a parallel state. Reference numeral 25 denotes a support shaft for each swing arm 20 with respect to the transmission case 14.

The mounting structure of the planting beak 3 with respect to the planting link 15 is such that the front and rear beak pieces 1 and 2 are provided around the pair of front and rear link pins 23 and 24 by bolts 28 via brackets 26 and 27.
Installed by tightening. A pair of left and right front brackets 26
The rear beak 2 can be rotated around the front link pin 23, and the rear bracket 27 can be rotated around the link pin 24, and the front beak 1 can be mounted. The connecting link 22 connected between the front and rear link pins 23 and 24 is
A guide tube 28 is fixed to the connection link 22 in the center, which is disposed at one end and the center. The guide tube 28 is located between the turntable 17 and the planting beak 3 and can guide the seedlings A dropped from the seedling cup 16 into the planting beak 3.

The planting beak 3 is formed in a wedge-like or beak-like shape with its upper part widened and narrowed across its lower end part, and is pierced into the soil surface B to easily form the planting hole C. Before this, in order to open and close the rear beak pieces 1 and 2, an opening / closing arm 30 is connected to a connecting pin 29 between the swing arm 20 at the rear and the planting link 15, and the opening / closing arm 30 is connected to the tip of the crankshaft 21. The front and rear beaks 1 and 2 are opened and closed by swinging the pin 43 with the opening and closing cam 31 integrated with the pin 43. A roller 32 is provided on the opening / closing arm 30 and is rotatable by being pushed by the opening / closing cam 31.

Here, the invention according to claim 1 based on FIGS. 1 to 13 is characterized in that the planting beak 3 consisting of a front beak piece 1 and a rear beak piece 2 which are opened and closed by operating back and forth is raised and lowered. At the top dead center portion, the front and rear beak pieces 1 and 2 are closed to receive the supply of the seedlings A, and at the bottom dead center portion, the soil surface B is opened to form the planting holes C and plant the seedlings. In a seedling planting machine, the seedling beak is characterized in that the opening angle α of the front beak piece 1 and the opening angle β of the rear beak piece 2 are different.

As a result, the planting beak 3 descends while holding the seedling A, and pierces the soil surface B to a predetermined depth. The seedlings A held are released and planted in the planting holes C while forming the planting holes C while opening the plants at predetermined angles α and β. The seedlings are raised and raised.

When correcting the planting posture,
The opening angle α or β of the posterior planting pieces 1 and 2 is adjusted. By fixing the opening angle α of the front beak 1 to zero or making it smaller and setting the opening angle β of the rear beak 2 larger than this opening angle α, the posture of the planted seedling A is The seedlings A can easily fall down, and the seedlings A can be prevented from falling forward. Conversely, by fixing the opening angle β of the rear beak piece 2 to a state of zero or making it smaller, and making the opening angle α of the front beak piece 1 larger than this opening angle β, the seedling A It is easy to fall down,
Seedling A can be prevented from falling down.

In this manner, the posture for planting seedlings can be corrected, and a stable planting posture can be obtained. Moreover, in any case, the opening interval between the front and rear beaks 1 and 2 can be kept large, and the seedling can be planted smoothly. Also, when planting seedlings on the soil surface of the multi-film laying, adjust so that the front and rear beak pieces 1 and 2 do not greatly deviate from the planting locus in the front-rear direction to reduce the disturbance of the multi-film. Can be.

Here, an embodiment in which only the front beak piece 1 is opened to the front side will be described mainly with reference to FIGS. An elongate hole 34 is provided between the pin 33 at the upper end of the opening / closing arm 30 and the bracket 27 on the front beak piece 1 side.
7 are connected by an interlocking link 36 via a pin 35. When the planting beak 3 reaches the bottom dead center of the planting locus D, the opening / closing arm 30 is pushed by the opening / closing cam 32 to move the interlocking link 36 upward. The bracket 27 having the 35 and the front beak 1 are rotated forward around the link pin 24 to open the rear beak 2 at an appropriate opening angle α between the rear beak 2 and the opening angle of zero (open angle β = 0). When the planting beak 3 is lifted and reaches the position of the top dead center, the pressing by the opening / closing cam 31 is loosened to open / close the arm 3.
In this case, the front beak piece 1 returns to the rear beak piece 2 side and is closed. The closing of the beak 3 is performed by the front and rear beak pieces 1 and 2.
It can be returned by a spring 42 provided in the tension direction over the space.

When adjusting the opening angle α of the front beak 1, the opening angle α can be adjusted by turning the adjusting nut 37 at the upper end of the interlocking link 36 and moving the interlocking link 36 up and down with respect to the pin 33. Moving upward, the opening angle α increases. Next, a mode in which only the rear beak piece 2 is opened rearward,
This will be mainly described with reference to FIGS. The pin 33 on the upper end of the opening / closing arm 30 and the bracket 26 on the side of the rear beak 2
Are connected by an interlocking link 36 via an elongated hole 34 and a pin 38 of the bracket 26 fitted to the elongated hole 34. That is, the interlocking link 36 is interlocked to operate the rear beak piece 2 side.

Thus, in the same manner as in the above example, at the bottom dead center, the rear beak 2 can be opened at an appropriate opening angle β with respect to the front beak 1 having an opening angle of zero (α = 0). it can. In this embodiment, the front beak 1 moves accurately along the planting locus D, but the rear beak 2 is opened inside the lower part of the V-shaped planting locus D, so that the planting hole C is formed. There is no deformation. In the state where the seedlings A planted in the planting holes C are engaged by the rear beak pieces 2, the amounts of pushing and moving to the front side are different, and the posture of the seedlings is easily changed. When opening angle β is small, planting seedling A
Falls forward, and when large, it tends to fall backward.
The opening angle β of the rear beak 2 is adjusted by the adjusting nut 37 in the same manner as in the above example.

Next, an embodiment in which the front and rear beak pieces 1 and 2 are both opened will be described mainly with reference to FIGS. An elongated hole is formed in the bracket 27 of the front beak piece 1 in the front-rear direction, and a pin hole 40 arranged in the bracket 26 of the rear beak piece 2 is formed.
Is fitted into the elongated hole 39. The opening angles α and β of the front and rear beak pieces 1 and 2 can be changed by the insertion position of the pin 41 into the pin hole 40. Pin 4
When 1 is inserted into the central pin hole 40, the opening angles α and β can be made equal as shown in FIG. When this pin 41 is inserted into the pin hole 40 on the front side as shown in FIG. 12, the opening angle β of the rear beak piece 2 is increased, and further, the pulling position of the pin 35 by the interlocking link 36 is fixed, as shown in FIG. When inserted into the side pin hole 40, the opening angle β can be reduced.

In this embodiment, the opening angles α and β can be adjusted by adjusting the adjusting nut 37 as described above.
The interlocking link 36 is interlocked with the bracket 27 on the front beak 1 side.
6 can be linked. 42 is planting beak 3
Is a spring that always works in the closing direction.

Next, referring mainly to FIGS. 7 to 9 and FIG. 14, an invention according to claim 2 is a planting beak 3 comprising a front beak piece 1 and a rear beak piece 2 which are opened and closed by operating back and forth. At the top dead center, the front and rear beak pieces 1 and 2 are closed to receive the supply of the seedlings A, and the soil surface B at the bottom dead center is opened to form a planting hole C. In the seedling planting machine for planting seedlings, the rear beak piece 2 is opened to bury the seedlings at the roots of the seedlings A already planted.

Thus, when the planting hole C is formed at the bottom dead center by increasing the opening angle β of the rear beak 2, the rear edge of the planting hole C in the soil is pushed rearward. As a result, the seedlings are buried in the planting holes of the planted seedlings and cultivated, and the planted seedlings can be prevented from falling forward.

Here, in the case where the seedlings are planted without a floor soil portion at the root like an onion seedling, the planting posture of the seedlings is easily maintained by covering the planting holes C. Part E of the beaker 3 by itself,
Let it be done promptly. For this reason, the interval between the planting plants before and after planting the seedlings is reduced, and the opening angle β of the rear beak piece 2 is increased. The interval between the planting stocks is performed by increasing the traveling speed of the vehicle body 6 with respect to the planting transmission speed of the planting beak 3.

After covering the soil with the rear beak piece 2 in this way, the planting posture is fixed by the pressure reduction by the pressure reduction wheel 19. Next, the invention described in claim 3 based mainly on FIGS.
By moving up and down the planting beak 3 comprising the rear beak piece 2 and the rear beak piece 2, the front and rear beak pieces 1 and 2 are closed and the seedlings A are supplied at the upper dead point, and the soil surface at the lower dead point is In B, in a seedling plant that opens and forms a planting hole C for planting seedlings, a closing cam 4 whose closing operation can be adjusted at the upper dead center side of the planting beak 3 and a lower cam at the lower dead center side. A seedling beak is provided, which is provided with an opening cam 5 whose opening operation is adjustable.

Thus, the closing operation on the top dead center side of the planting locus of the planting beak 3 is adjusted by the closing cam 4, and the opening operation on the bottom dead center side is adjusted by the opening cam 5. For this reason, when the size of the seedlings or the length of the planting beak changes, the adjustment of the operation timing by the separate closing cam 4 and the opening cam 5 on the upper and lower dead center side side is performed. It can be done accurately and easily.

Here, the pin hole 40 and the pin 4
The mechanism that opens and closes with 1 is the same as in the above example (FIG. 11), but the interlocking link 36 that is interlocked with the opening and closing arm 30 is interlocked with the bracket 26 of the rear beak 2. The opening / closing cam 31 for actuating the opening / closing arm 30 is attached to the cam pin 43 of the planting link 15, and includes a closing cam 4 and an opening cam 5. These closing cams 4 are located at a position where the planting beak 3 is closed without pushing up the roller 32 at the top dead center, and the opening cam 5 is pushed up the roller 32 at the bottom dead center and opening the planting beak 3. It is in.

However, if the seedling length is large, or if the planting beak 3 after the seedlings are planted in the planting hole C is closed on the ascending stroke due to the length of the planting beak 3 or the like, once, The planted seedling A is pulled out from the planting position while being pinched and lifted. In order to prevent this, the ascent stroke or the top dead center side may be set to a slightly open state F (FIG. 1).
6). Further, in the case of a small seedling or an onion seedling having no bed soil portion, if this opening state is maintained, the seedling supplied at the top dead center may fall off.

In such a case, the closing cam 4 and the opening cam 5 suitable for these conditions are rotated around the cam pin 43 to change and adjust the phase of each of the cams 4 and 5, or
A cam suitable for each state is prepared and can be used by replacing the cam pin 43 (FIG. 17).

[Brief description of the drawings]

FIG. 1 is a perspective view of a seedling beak.

FIG. 2 is a side view of a part thereof.

FIG. 3 is an operation side view thereof.

FIG. 4 is an enlarged side view showing a part of the operation.

FIG. 5 is a side view showing the planting locus.

FIG. 6 is a side view of the seedling transplanter.

FIG. 7 is a perspective view of a seedling beak showing a partially different embodiment.

FIG. 8 is a side view of a part thereof.

FIG. 9 is a side view of the operation. .

FIG. 10 is an enlarged side view showing a part of the operation.

FIG. 11 is a side view of a seedling plant part showing another embodiment.

FIG. 12 is a side view showing the operation.

FIG. 13 is a side view showing the operation.

FIG. 14 is a perspective view of a seedling beak showing a partially different embodiment.

FIG. 15 is a side view of a seedling plant part showing another embodiment.

FIG. 16 is a side view and a front view showing the operation of the opening / closing cam section and the planting beak.

FIG. 17 is a side view and a front view showing the operation.

[Explanation of symbols]

 1 front beak piece 2 back beak piece 3 planting beak 4 closing cam 5 opening cam A seedling B soil surface C planting hole D planting locus α opening angle β opening angle

Claims (3)

[Claims] 1. An upper and lower beak 3 consisting of a front beak 1 and a rear beak 2 which is opened and closed by being operated back and forth, thereby closing the front and rear beaks 1 and 2 at the top dead center. In the seedling transplanter that receives the seedlings A and opens the planting holes C on the soil surface B at the bottom dead center to plant seedlings,
Characterized in that the opening angle α of the rear beak piece 2 is different from the opening angle β of the rear beak piece 2. 2. At the top dead center portion, the front and rear beak pieces 1 and 2 are closed by raising and lowering a planting beak 3 composed of a front beak piece 1 and a rear beak piece 2 which are opened and closed by operating back and forth. The seedling A is supplied with the seedling A, and the seedling A is opened on the soil surface B at the bottom dead center to form a planting hole C for planting the seedling. A seedling beak that is laid to the root of A. 3. At the top dead center portion, the front and rear beak pieces 1 and 2 are closed by raising and lowering a planting beak 3 comprising a front beak piece 1 and a rear beak piece 2 which are opened and closed by operating back and forth. The seedling A is supplied to the seedling beaker 3 at the bottom dead center side of the seedling beaker 3 in which the seedling A is opened and a seedling hole C is opened in the soil surface B at the bottom dead center to plant seedlings. A seedling planting beak, wherein a closing cam 4 whose closing operation is adjustable and an opening cam 5 whose opening operation is adjustable at the bottom dead center side are separately provided.