JPH0914A - Transferring of seedling row from connected seedling group and device therefor - Google Patents

Abstract

PURPOSE: To improve working efficiency by successively decelerating moving speed of a seedling row according to approach to a transferring position of the seedling row, efficiently transferring a connected seedling group to a seedling row-carrying conveyor to reduce shock to the seedlings. CONSTITUTION: When transferring a seedling row Q0 separated from a connected seeding group Q connecting soil-stuck seedlings to a seedling row-transferring position (i) on a seedling row-carrying conveyor E, moving speed of the seedling row Q0 is successively decelerated according to approach the seedling row- transferring position (i) to stop the seedling row Q0 at the seedling row- transferring position (i) and the seedling row Q0 of the connected seedling group Q is transferred to the seedling row-carrying conveyor E. A driving mechanism part G successively decelerating the moving speed is preferably provided in a seedlings transferring device A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transfers a seedling row separated from a connected seedling group consisting of a large number of soil-bearing seedlings such as paper tube seedlings to a seedling row conveying conveyor in transplant cultivation of agricultural products. TECHNICAL FIELD The present invention relates to a method for transferring a seedling row of a connected seedling group and an apparatus therefor.

[0002]

2. Description of the Related Art A seedling row separating device for this kind of connected seedling group is disclosed in Japanese Patent Publication No. 6-38722. The conventional device is shown in FIGS.

This apparatus is mounted on the collective seedling supply conveyor 1, the seedling row transfer conveyor 2 whose receiving end is located on the lower front side of the sending end of the collective seedling supply conveyor 1, and the collective seedling supply conveyor 1.
Collective seedlings consisting of soil-attached seedlings (corresponding to the consolidated seedling group of the present application)
It has a slide frame 3 which is reciprocally moved between a separation position (a) for separating P and a transfer position (b) for transferring the seedlings on the seedling transfer conveyor 2. The slide frame 3 is driven hydraulically. It is performed by the cylinder 4.

The slide frame 3 holds a seedling row between the seedling separating needle 5 and the seedling separating needle 5 inserted from above in the first row of the collected seedlings P on the collective seedling feeding conveyor 1. A seedling row separating section 7 having a seedling separating plate 6 is provided.

The separating operation of the collective seedling P by the above-mentioned conventional device is as follows. The slide frame 3 is moved to the separating position (a), and the seedling separation needle 5 is inserted into the first seedling row of the collective seedling P to separate the seedling row.

Next, with the separated seedling row held by the seedling separating needle 5 and the seedling separating plate 6 inserted into the seedling row, the slide frame 3 is moved to the transfer position on the seedling row conveyer 2 (see ) To. Then, the seedling separating needle 5 and the seedling separating plate 6, that is, the seedling row held by the seedling row separating section 7 is released at the transfer position (b) to put the seedling row on the seedling row conveyor 2. By repeating the above steps, the separated seedling rows are sequentially transferred onto the seedling row transport conveyor 2.

[0007]

By the way, in the above-mentioned conventional apparatus, the slide frame 3 is formed by using the hydraulic cylinder 4.
Is reciprocated at a substantially constant speed, and therefore, when the slide frame 3 is moved to the transfer position (b) and the separation position (a), an impact due to the sudden stop of the hydraulic cylinder 4 occurs.

[0008] Particularly, when the slide frame 3 is moved to the transfer position (b) on the seedling row conveyer 2, a shock is transmitted to the seedling rows held in the seedling row separating section 7, and each seedling with soil. There is a risk that the soil will fall out, and such seedlings will also adversely affect the growth after transplanting.

Further, the impact generated when the slide frame stops is increased as the moving speed of the slide frame is increased in order to improve work efficiency, which is an obstacle to improving work efficiency.

Therefore, according to the present invention, when transferring a seedling row such as soil seedling to the seedling row conveyor, the impact applied to the seedling row conveyor can be reduced and the working efficiency can be improved. The purpose of the present invention is to provide a seedling transfer method and a device therefor.

[0011]

According to the method of the present invention for achieving the above object, a seedling row Q0 separated from a connected seedling group Q in which soil-grown seedlings are continuously arranged is provided on a seedling row conveyor E. When moving to the row transfer position (d), the above-mentioned seedling row Q
0 so that 0 stops at the seedling transfer position (d).
Is characterized in that the moving speed thereof is continuously reduced as it approaches the seedling row transfer position (d).

In the apparatus of the present invention for achieving the same object, the seedling separation section C is placed at the seedling transfer position (d) so that the seedling separation section C is stopped at the seedling transfer position (d). A drive mechanism section G is provided for continuously decelerating the moving speed of the drive mechanism G.

[0013]

In the present invention, when the seedling row separated from the connected seedling group approaches the seedling row transfer position, the moving speed is continuously reduced according to this approach, and the seedling row moves to the seedling row transfer position. When stopped, it will stop at that position.

[0014]

EXAMPLE 1 FIG. 1 is a side view of a seedling transplanter equipped with a seedling row transfer device for a connected seedling group according to a first embodiment of the present invention.

The seedling row transfer device A for the connected seedling group of the present invention is incorporated in the seedling row separating device B mounted on the seedling transplanter.

The seedling transplanter has a main frame 8 and an upper and lower auxiliary frame 8 for connecting to a tractor (not shown).
a, 8b, drive wheel 9, rolling corta 10 for cutting contaminants, opener 11 for making a furrow, seedling planter 12 for planting seedlings in the furrow, and suppressing the planted seedling The squeezing wheel 13 is provided, and the seedling separation device B is mounted.

The seedling row separating device B is a seedling row separating section C for separating a group of connected seedlings Q in which soiled seedlings such as paper tube seedlings (hereinafter referred to as "seedlings") are separated for each row, and this seedling. Connected seedling group Q to row separation section C
And a feeding conveyor D for feeding the seedling row Q0 separated by the seedling row separating section C to the seedling transplanter side.
And a seedling row transfer device A that supports the seedling row separating section C.

Of these, the supply conveyor D is supported on one end of the main frame 8 of the seedling transplanter, and the seedling row transfer conveyor E is supported on the upper part of the machine frame 14 erected on the intermediate portion thereof. The seedling row transfer device A is supported by plate frames 17 and 17 (one of which is not shown) fixed to the upper portion of the machine frame 14 via a curved pipe 15 and a connecting pipe 16, and the seedling row separating portion C is provided. Are opposed to the connected seedling group Q on the supply conveyor D.

In the connected seedling group Q, a seedling row in which adjacent seedlings are in close contact with each other and a seedling row in which adjacent seedling rows are alternately sandwiched and spaced apart from each other are orthogonal to each other. It has a honeycomb structure.

The supply conveyor D includes a pair of rotating rollers 18 and 19 arranged in parallel with each other, and these rotating rollers 1
A supply belt 20 which is stretched between 8 and 19 and on which the seedling group Q is placed in a posture in which each seedling is erected, and one rotating roller 1.
A motor M1 in which a chain 21 is stretched and connected between
And the drive belt 20 is driven by the motor M1 so as to transfer the connected seedling group Q toward the seedling row separating section C.

The seedling row transfer device A includes a drive mechanism section G including a lever crank mechanism F as a link mechanism and a motor M2.
And a fine movement link 22. Lever crank mechanism F
Is a seedling row separating position (c) corresponding to the supply end portion of the supply conveyor D and separating the seedling row by row, and a corresponding position on the receiving end of the seedling row transport conveyor E and the seedling row. The seedling row separating section C is swingably supported between the seedling row transfer position (d) where the seedling row Q0 is transferred to the conveyor E.

The lever crank mechanism F has a seedling separation section C.
A swinging link 23 supporting the swinging end 23a, a large gear 24 as a rotating link, and a connecting rod 25 connecting the swinging link 23 and the large gear 24.
The details are as follows.

A rotary shaft 26 is horizontally mounted on the upper ends of the pair of plate frames 17, 17, and the upper ends of the pair of swing links 23, 23 are fixed to the rotary shaft 26. Further, the fine movement link 22 has its base end portion pin-connected to the rear intermediate portion of the pair of plate frames 17, 17 and the movable frame body 2 at the front end portion.
7 side plates 28 are pin-connected.

A support shaft 30 is laid horizontally between the support plates 29, 29 fixed to the lower ends of the swing links 23, 23. The support shaft 30 forms a seedling separation section C. Stripping part 3
1 and the movable frame 27 are pivotally supported so as to be tiltable.

At the intermediate portion of the swing links 23, 23,
A connecting pipe 32 for connecting these is fixed, and a bracket 33 to which one end of the connecting rod 25 is pin-connected is fixed to this. Also, the connecting rod 25
The other end of is connected to the side surface of the large gear 24 by a pin.

The large gear 24 includes a pair of plate frames 1
It is rotatably attached to one surface of a support plate 36 fixed to the two connecting pipes 34 and 35 which are laterally bridged between 7 and 17. The motor M2 is attached to the other surface of the support plate 36, and a small gear 37 fixed to the rotating shaft M2a meshes with the large gear 24.

On the side surface of the large gear 24, a rod mounting pin 38 for mounting the other end of the connecting rod 25 on the outer peripheral edge portion thereof is provided in a protruding manner. Reference numeral 39 denotes an auxiliary plate that supports the shaft of the large gear 24, which is fixed to both the connecting pipes 34 and 35 in parallel with the support plate 36 with a required gap.

Reference numeral 40 denotes a cover member which is bent to include the large gear 24 and is fixed to the support plate 36. On the back surface of the cover member 40, the seedling row separating section C
A proximity sensor that faces the position where the rod mounting pin 38 of the large gear 24 stops when is moved to the seedling row separating position (c) and the seedling row transferring position (d), and detects the pin 38. The sensors S1 and S2 are fixed, and the driving of the motor M2 is stopped when the pins 38 are detected by these sensors S1 and S2 (FIGS. 1 and 2).

In such a lever crank mechanism F, the large gear 24 is rotated by the drive of the motor M2, and the swing link 23 is swung in accordance with the rotation of the large gear 24. Regarding this swing, refer to FIG. Will be described in detail. Fig. 4 shows the large gear 2
4, an operation view showing only the connecting rod 25 and the swing link 23 and omitting some of them.

First, the rotation shaft M2a of the motor M2 is assumed to rotate at a constant peripheral speed, and the radius from the rotation center of the large gear 24 to the rod mounting pin 38 is r, and the large gear 24
Is n, the radius r is the angle with the horizontal axis, θ is the distance from the base end of the swinging link 23 to one end of the connecting rod 25, and the seedling separating part C is the axis from the base end. Supported support shaft 30
Let b be the distance to. In the figure, the horizontal axis represents the distance between the seedling separation position (c) and the seedling transfer position (d), the vertical axis represents the speed of the seedling separation part C, and the curve (e) represents the speed change. ing.

Assuming the above, the rod mounting pin 3 when the large gear 24 rotates at a constant peripheral speed
The moving speed V in the horizontal direction (horizontal axis direction) of 8 is (b /
a) · n · r · SIN θ is approximately represented.

When the rotating shaft M2a of the motor M2 is rotated at a constant speed, the large gear 24 meshed with the rotating shaft M2a also rotates at a constant peripheral speed. In this case, the speed of the seedling separation part C is as shown by the curve (e) in FIG. 4 as the seedling separation part C approaches the seedling separation position (c) and the seedling transfer position (d). When the seedling row separating section C is moved to the seedling row separating position (c) and the seedling row transferring position (d), the speed becomes 0 substantially continuously along the sine curve. And stop.

That is, in this embodiment, the dead point of the swing link 23 is made to coincide with the seedling row separating position (c) and the seedling row transferring position (d). Then, at this time, the pin 38 provided on the large gear 24 is detected by the sensors S1 and S2, and the driving of the motor M2 is stopped.

The seedling row separating section C has a hydraulic cylinder 41 for tilting the seedling stripping section 31 relative to the movable frame 29 together with the movable frame 27 and the seedling row stripping section 31. .

The movable frame 27 has a lower end on the front side pivotally supported by the support shaft 30 and an upper end on the rear side in the fine movement link 2.
2 is composed of a pair of side plates 28, 28 and the like which are pivotally supported at the tip end thereof, and a seedling row peeling section 31 is arranged between the pair of side plates 28, 28 (FIGS. 1 and 2).

When the seedling row separating section C is moved to the seedling row separating position (C), the movable frame 27 assumes the initial posture (F) indicated by the solid line, and the seedling row separating section C is moved to the seedling row transfer position. When moved to (d), the tilting posture (g) indicated by the two-dot chain line
Becomes

The structure of the seedling row peeling section 31 is as follows. Reference numeral 42 is a plane U-shaped tilting plate. This tilting plate 42
The lower ends of both bent portions 42a, 42a (one of which is not shown) are pivotally supported by the support shaft 30, and both bent portions 42a, 42a
A shaft 44 and the like horizontally suspending the seedling contacting plate 43 that abuts on the frontmost seedling row Q1 of the connected seedling group Q is tilted between the 2a.

The tilting plate 42 is provided with the hydraulic cylinder 41 between itself and the movable frame 27.
By expanding and contracting 1a, the seedling row peeling section 31 is supported by the support shaft 3
It moves between the seedling row contact position (h) and the separation end position (d) indicated by the solid line around 0 (FIG. 2).

The seedling contact plate 43 is a horizontal rectangle whose upper end is fixed to the shaft 44, and on the back surface thereof, the frontmost seedling row of the connected seedling group Q which contacts the seedling contact plate 43. A motor M3 having a seedling separation needle 45 for separating Q1 is fixed.

The seedling separating needle 45 is a needle-like needle which is formed by curving in a C-shape at successive intervals between the seedlings forming the frontmost seedling row Q1 and is driven by a motor M3. Contact plate 4
It moves between the insertion position where each seedling of the frontmost seedling row Q1 which is in contact with 3 is inserted and the extracted position where it is extracted.
The seedling row peeling section 31 having the above structure is the movable frame 27.
The seedling row Q0 was made to face the seedling row conveyer E from the separation end position (li) in a state where the separated seedling row Q0 was held as the initial posture (f) changed from the initial posture (f) to the tilting posture (g). Change to the position (nu).

Next, the operation of separating and transferring the connected seedling group for each seedling row will be described. First, before the start of the separating operation, the seedling row separating section C is stopped at the seedling row separating position (C).

When the connected seedling group Q is placed on the supply conveyor D and the separating operation is started, the connected seedling group Q is moved toward the seedling row separating section C.

Next, the motor M3 is driven to insert the seedling separating needle 45 into the upper part of each seedling forming the front seedling row Q1,
The frontmost seedling row Q1 is held by the seedling contact plate 43 and the seedling separating needle 45.

Upon completion of the piercing operation, the hydraulic cylinder 41 is driven to start tilting the seedling row peeling section 31, and the frontmost seedling row Q1 is gradually peeled downward from the upper end thereof. , Is separated from the connected seedling group Q.

When the above peeling operation is completed, next,
The motor M2 is driven. By this drive, the seedling separation section C is moved from the seedling separation position (C) toward the seedling transfer position (D). The movement speed of the seedling separation section C is the seedling separation position ( C) and the seedling transfer position (d) are continuously accelerated up to an intermediate position (Fig. 4).

However, the moving speed of the seedling row separating section C is continuously reduced as it approaches the seedling row transfer position (d) from around the intermediate position, and the position (d)
Will be stopped when you move to.

That is, when the seedling row separating section C is stopped at the seedling row transfer position (d), the moving speed thereof is sufficiently reduced, so that the soil of the seedlings held by the seedling row separating section C falls off. No impact will occur.

At the same time when the seedling row separating section C stops at this position (d), the motor M3 is driven and the seedling separating needle 45 is pulled out from the seedling row Q0. As a result, the seedling row Q0 is released onto the seedling row conveyer E and is conveyed to the seedling transplanter side.

With the release of the separated seedling row Q0,
The seedling row separating section C is moved back to the seedling row separating position (C), but at this time as well, the moving speed is reduced as it approaches the position (C) (FIG. 4). .
That is, also at this time, the impact due to the stop of the seedling row separating portion C can be significantly reduced.

FIGS. 5 and 6 show a second embodiment of a seedling row transfer device for a connected seedling group according to the present invention. The same parts as those described in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The second embodiment differs from the first embodiment described with reference to FIGS. 1 to 4 in that the swing link 23 has a drive mechanism portion H for transmitting the rotational force of the motor M2. .

On the large gear 24 meshing with the small gear M2a of the motor M2, a circular plate cam 46 is fixed at a position eccentric from this shaft. On the other hand, a roller 48 that is in contact with the plate cam 46 via a bracket 47 is attached to the connecting pipe 32 of the swing link 23. Further, a tension coil spring 49 is stretched between the swing link 23 and the plate frame 17 so that the roller 48 and the plate cam 46 are always in contact with each other.

The detection pin 5 is provided on the side surface of the plate cam 46.
0 is projected, and on the back surface of the cover member 40, the same sensors S1 and S2 for detecting the detection pin 50 are attached. In such a structure, the plate cam 46
According to the eccentric movement of the seedling separating section C, the seedling separating position C
And rocks between the seedling transfer position (d).

The present invention is not limited to the above-mentioned embodiments, but various modifications can be made within the scope of the invention.

That is, in each of the above embodiments, the lever mechanism and the cam mechanism are used as the link mechanism, but the seedling row is stopped at the seedling row transfer position (d). Any other mechanism may be used as long as the moving speed can be continuously reduced as the row approaches the seedling row transfer position.

In order to stop the seedling row separating section at a predetermined position,
Although the rod mounting pin of the large gear and the detection pin are detected by the sensor, the seedling separation section may be stopped at a predetermined position by detecting the rotation speed of the rotation shaft of the motor.

[0057]

According to the present invention, it is possible to remarkably reduce the impact applied to a seedling row conveyer when transferring a seedling row such as soil seedlings. Therefore, it is possible to prevent the soil of the seedlings forming the seedling row from falling out of the paper tube seedlings or the like. Therefore, even if the seedling row separating operation is performed at a fast pitch, there is no need to worry about the falling of soil, so that the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanting machine equipped with a first embodiment of a seedling row transfer device for a connected seedling group of the present invention.

FIG. 2 is an enlarged side view of the seedling row transfer device.

FIG. 3 is a partial front view thereof.

[FIG. 4] Between a seedling separation position and a seedling transfer position,
It is a figure which shows the change of the moving speed of the seedling separation part.

FIG. 5 is an enlarged side view of a second embodiment of a seedling row transfer device for a connected seedling group of the present invention.

FIG. 6 is a partial front view thereof.

FIG. 7 is a side view showing an operation state of a conventional seedling row transfer device.

FIG. 8 is a side view showing an operating state of a conventional seedling transfer device.

[Explanation of symbols]

23a swinging end 23 swinging link 24 large gear (rotating link) 25 connecting rod 48 plate cam C seedling row separating section E seedling row conveying conveyor F link mechanism (lever crank mechanism) G, H drive mechanism section M2 motor Q linking Seedlings Q0 Separated seedlings (c) Seedling separation position (d) Seedling transfer position

Claims (5)

[Claims] 1. A seedling row separated from a group of connected seedlings in which soil-grown seedlings are continuously arranged is moved to a seedling row transfer position on a seedling row transfer conveyor and transferred to the seedling row transfer conveyor. In the method for transferring a seedling row of a connected seedling group, the moving speed is continuously reduced as the seedling row approaches the seedling row transfer position so that the seedling row stops at the seedling row transfer position. A method for transferring a row of connected seedlings, which is characterized in that 2. A seedling row separated from a group of connected seedlings formed by connecting soil-grown seedlings is held, and this seedling row is moved toward a seedling row transfer position on a seedling row transfer conveyor, In a seedling row transfer device of a connected seedling group having a seedling row separating section to be transferred to a seedling row conveying conveyer, the seedling row separating section is arranged so that the seedling row separating section stops at the seedling row transferring position. A seedling row transfer device for a group of connected seedlings, which is provided with a drive mechanism section that continuously reduces the moving speed of the transfer seedling as it approaches the transfer position. 3. The drive mechanism section includes a swing link that supports the seedling row separating section at a swing end, a motor, a rotary link that is rotated by the motor, and a connecting rod that connects the swing link to the motor. The seedling row transfer device of the connected seedling group according to claim 2, which has a link mechanism provided with. 4. The drive mechanism portion is fixed eccentrically to a swing link that supports the seedling row separating portion at a swing end portion, a motor, and a rotation shaft thereof, and is in constant contact with the swing link. The seedling row transfer device for a connected seedling group according to claim 2, further comprising a plate cam arranged. 5. The drive mechanism section, as the seedling row separating section approaches the seedling row separating position, so that the seedling row separating section stops at the seedling row separating position for separating the seedling rows from the connected seedling group, 3. Driving so as to continuously reduce the moving speed thereof.
The seedling row transfer device for connecting seedling groups according to 3 or 4.