JP3475277B2 - Towing device for continuous potted seedling transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a towing apparatus for towing a grounding type continuous pot seedling transplanting machine for continuously pulling out continuous pot seedlings connected by connecting pieces from one end and planting them.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 5-3 discloses a continuous seedling transplanter.
There is one described in Japanese Patent No. 08822. This one is provided with a pot seedling placing portion for placing continuous potted seedlings connected by connecting pieces on the upper surface, and an opener for forming a planting groove on this ground surface with the lower surface as a grounding surface. The structure is such that the continuous potted seedlings pulled out from the section are continuously fed into the planting groove formed by the opener.

[0003]

By the way, this kind of continuous potted plant transplanter is usually towed by, for example, a walking tractor while its grounding surface is grounded to the bottom of a planting groove previously formed by a tiller. However, the pressing of the ground contact surface against the ground depends exclusively on its own weight and the weight of the continuous potted seedling placed on it, and therefore, if the bottom of the planting groove is uneven, the ground contact surface separates from its bottom surface, It becomes difficult to form the planting groove with the opener. In particular, planting grooves such as green onions are generally formed by a rotary-only machine equipped with a pair of left and right rotary blades. In this case, excavation between the pair of rotary blades is insufficient and There is a problem that so-called residual tillage is formed in the center of the groove, and this residual tillage makes it more difficult to form the planting groove by the opener.

The present invention has been made in view of the above-mentioned problems of the prior art, and its object is to provide a walking tractor with a function of treating residual plowing on the bottom of a planting groove, thereby providing a grounding type tractor. It is to guarantee a stable transplantation by a continuous pot seedling transplanter.

[0005]

In order to solve the above problems, the present invention includes a walking tractor having drive wheels,
On the hitch of the walking tractor, there are provided a first support rod having an engaging portion capable of engaging a handle provided on the continuous pot seedling transplanter at an upper end, and a cutter for removing residual tillage at the bottom of the planting groove. It is characterized in that the second support rod at the lower end is attached.

In the present invention, the second supporting rod can be attached to the hitch of the walking tractor so as to be adjustable in height and / or rotatable. Further, a pair of left and right auxiliary wheels that roll along the planting groove can be further attached to the second support rod. In this case, the cutter is arranged between the pair of auxiliary wheels. desirable.

[0007]

In the traction device of the continuous potted seedling transplanter having the above structure, the cutter under the second support rod attached to the hitch of the walking tractor removes the residual tillage on the bottom of the planting groove, so that the continuous potted seedling transplanter is operated. The grounding surface of the grounding ground surely contacts the bottom of the planting groove, and the opener can surely form the planting groove.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 is a grounding type continuous pot seedling transplanting machine, and 2 is a towing device according to the present invention for towing the continuous potted seedling transplanting machine 1. The main traction device 2 includes, as a main element, a general-purpose walking tractor 5 having a pair of left and right driving wheels 3 which are rotationally driven by an engine and a driving handle 4. Then, the driver operates the tractor 5 while holding the steering wheel 4 and runs the tractor 5 in one direction (traction direction) A along the planting groove 7 formed in advance on the field surface 6 by a dedicated machine, so that continuous pot seedling transplantation is performed. The machine (hereinafter, simply referred to as a transplanter) 1 has a grounding surface 10 on the rear side of the towing direction A thereof.
Will be contacted with the bottom of the planting groove 7 and moved.

As shown in FIG. 2, the transplanting machine 1 accommodates continuous potted seedlings 12 connected by connecting pieces in order from the front side in the pulling direction A on a machine base 11 having the ground contact surface 10. Potted seedling placing section 14 for placing the seedling raising box 13, a potted seedling guiding section 15 for guiding the continuous potted seedlings 12 drawn from the potted seedling placing section 14 in a line, and this potted seedling guiding section A potted seedling feeding section 16 for continuously feeding out the potted seedlings 12 from 15 is provided. The pot seedling guide portion 15 includes a guide plate 17 that narrows the passage of the continuous pot seedling 12 from the pot seedling placing portion 14 to the pot seedling feeding portion 16, and the pot seedling feeding portion 16 is a machine base. The bottom surface of 11 is formed as a notch.

On the upper surface of the machine base 11, a connecting plate 1 having a chevron shape is formed.
8 is arranged so as to be able to move up and down. By dipping the tip end of this connecting plate 18 below the underlayment paper 19 in the seedling raising box 13, the continuous potted seedlings 12 are passed over the edge of the seedling raising box 13. It can be pulled out continuously. In addition, the machine base 11 is continuous from the inside of the nursery box 13 by connecting the front part 11a and the rear part 11b divided between the pot seedling placement part 14 and the pot seedling guide part 15 in different steps. Potted seedling 12
It has a structure that makes it easy to pull out.

On the other hand, on the grounding surface 10 of the machine base 11, an opener 20 is installed which forms a planting groove on the bottom of the fixed planting groove 7. The opener 20 has a tubular shape in which the front end portion is closed at an acute angle and the rear end is opened, and the rear portion thereof extends below the potted seedling feeding portion 16. When the transplanter 1 is moved while the grounding surface 10 is grounded, the opener 20
Forms a planting groove on the bottom of the fixed planting groove 7, and the pot seedling feeding section 16
The continuous potted seedling 12 fed from the notch is fed into the planting groove while being guided by the opener 20. Further, a pair of scraping plates 21 and a pressure suppressing roller 22 are provided at the rear end of the machine base 11, and the continuous potted seedlings 12 fed into the planting groove are used for scraping soil by the scraping plates 21. The pressure suppression by the pressure suppression roller 22 ensures the transplantation in the fixed planting groove 7.

The transplanter 1 is connected to the walking tractor 5 via a handle 24 on a column 23 attached to the front end of the machine base 11. The column 23 is extendably attached to a hollow stand 26 fixed to the machine base 11 via a bracket 25, and its height is adjustable. The walking tractor 5 is provided with a U-shaped hitch 30 as a standard as shown in FIGS. 3 to 6. In the present embodiment, the first support rod 31 having the hitch 30 vertically penetrated is provided. A hook (locking portion) 32 is provided at the upper end, and the grip 24 is engaged with the hook 32 so that the transplanter 1 is detachably connected to the walking tractor 2.

The hitch 30 is also provided with a prismatic main frame 33 extending in the width direction of the walking tractor 5. As shown in FIG. 5, the main frame 33 has a U-shaped bracket 34, which is integrally provided at the center portion in the longitudinal direction thereof, fitted into the hitch 30 so that the bolt / nut 3
It is fixed to the hitch 30 by means of 5, and at this time, the first support rod 31 which penetrates the bracket 34 is also fixed together. At the left and right ends of the main frame 33, sub-frames 37, 37 for supporting the spare seedling stand 36 are provided.
The base end portions of the above are fitted, and two spare seedling raising boxes 13A accommodating the continuous potted seedlings 12 are placed on the spare seedling stand 36 with the partition 38 interposed therebetween. The preliminary seedling stand 36 is arranged so as to incline downward toward the rear side of the pulling direction A, that is, toward the transplanter 1 side.

At the center of the main frame 33, as shown in FIGS. 5 and 6, a pair of plate-shaped brackets 3 are provided.
9 are fixed in parallel at a predetermined interval, and a hollow holder 41 that supports the second support rod 40 is located on the pair of brackets 39 and is located between the pair of brackets 39.
It is rotatably attached using 2. The second support rod 40 is fixed to the holder 41 by using a set bolt 43 in a state where the upper end portion is inserted into the square tubular portion of the holder 41 (not shown). In addition, a plurality of recesses 40a are provided on the upper end side of the second support rod 40 so as to be arranged in the longitudinal direction thereof (FIG. 6).
By selecting one of the above, the installation height of the second support rod 40 with respect to the holder 41 is adjusted.

At the lower end of the second support rod 40, as shown in FIG.
A pair of left and right auxiliary wheels 45 and a cutter 46 are supported via a bracket 44 as well shown in FIG. The pair of auxiliary wheels 45 are mounted on the bracket 44 by an axle 47, and their mutual intervals are adjusted so as to match the bottom width of the planting groove 7. On the other hand, the cutter 46 is arranged between the pair of auxiliary wheels 45, and the shafts 48 of the cutters 46 are inserted into the brackets 44 by using the pins 49.
It is fixed to. The shaft 48 of the cutter 46 is provided with a plurality of holes 48a arranged in the longitudinal direction thereof, and by selecting one of these holes 48a with a pin 49, the installation height with respect to the bracket 44 is adjusted. It is supposed to be done.

Here, the holder 41, which supports the second support rod 40, has its rotation range restricted by two stopper pins 50 and 51 bridged between a pair of brackets 39. That is, the holder 41 is shown in FIGS.
In the field of view, rotation of the clockwise direction is restricted by one stopper pin 50 and rotation of the counterclockwise direction is restricted by the other stopper pin 51, and accordingly, the second support rod 40 is assisted. An upright posture in which the wheel 45 side is tilted slightly forward (shown by solid lines in FIGS. 4 and 5) and a horizontal posture in which the auxiliary wheel 45 side is stored inside the walking tractor 5 (two-dot chain line in FIGS. 4 and 5) Will be selectively positioned. Then, the bracket 39 and the holder 4
1 and a tension spring 54 using pins 52 and 53.
The second supporting rod 40 is maintained in the upright posture and the horizontal posture by the urging force of the tension spring 54.

When the transplanter 1 is towed by the towing device 2 configured as described above, the handle 24 on the side of the transplanter 1 is used.
Is simply attached to the hook 32 at the upper end of the first support rod 31 extended from the hitch 30 of the walking tractor 5, and the connection between the two is completed. Then, after this connection, if the handle 4 of the walking tractor 5 is operated to move the tractor 5 in the one direction A, the opener 20 provided on the installation surface 10 of the transplanter 1 causes the planting groove 7 to move as described above. A planting groove is formed in the bottom of the pot, and the continuous potted seedlings 12 pulled out from the potted seedling placement portion 14 are continuously transplanted into the planting groove. By the way, when the planting groove 7 is formed by the rotary dedicated machine, excavation between the left and right rotary blades becomes insufficient, and the residual tillage 5 is left in the center of the planting groove 7.
5 was formed (Fig. 1) and left as it is,
The grounding surface 10 of the transplanter 1 floats from the bottom of the planting groove 7,
Formation of the planting groove by the opener 20 becomes insufficient.
However, the cutter 46 provided at the lower end of the second support rod 40
Since this residual tillage 55 is deleted, the above-mentioned floating of the ground contact surface 10 of the transplanting machine 1 is prevented in advance, the planting groove is accurately formed at the bottom of the planting groove 7, and the continuous potted seedling 12 is transplanted reliably. Becomes Particularly in the present embodiment, this second support rod 40
Since the height of the cutter and the shaft 48 of the cutter 46 are adjustable, the height position of the cutter 46 can be changed according to the height of the residual tillage 55, and the residual tillage 55 can be surely deleted. .

In this embodiment, the pair of auxiliary wheels 45 provided under the second support rod 40 come into contact with both sides of the planting groove 7 to guide the traveling of the walking tractor 5.
Is stable, and the formation of the planting groove by the opener 20 described above becomes more reliable. Further, when the continuous potted seedlings 12 in the seedling raising box 13 on the transplanting machine 1 are empty, they are replaced with the seedling raising boxes 13A on the spare seedling stand 36 on the spot, and the continuous potted seedlings 12 are replaced.
Can be replenished immediately, and work efficiency is significantly improved. Further, since this preliminary seedling stand 36 is inclined downward toward the rear side of the pulling direction A, it does not hinder the line of sight of the operator of the walking tractor 5 to the transplanter 1, and the continuous potted seedling 12 It is possible to perform the transplanting work while observing the feeding state, and the workability is improved.

Furthermore, when the transplanter 1 is transferred or stored alone, the handle 24 of the transplanter 1 is removed from the hook 32 at the upper end of the first support rod 31, and the transplanter 1 is easily removed from the walking tractor 2. Can be separated into Further, after the transplanter 1 is separated, the second support rod 40 is rotated to store the auxiliary wheel 45 and the cutter 46 under the tractor 5, so that the auxiliary wheel 45 and the cutter 46 come into contact with the ground. As a result, the walking tractor 2 can be smoothly moved including traveling. Moreover, the second support rod 40 at this time
Since the rotation of can be done with one touch, workability is also improved.

According to the present invention, as shown in FIG. 7, the walking tractor 5 can be provided with a rotary blade 55 for forming the planting groove 7. In this case, if the auxiliary wheel 45 is present, the tractor 5 is lifted by the auxiliary wheel 45 and the rotary blades 56, and the drive wheel 3 may not have sufficient force, and slip may occur. Should be omitted. By providing the rotary blades 56 in this manner, when the driver holds the steering wheel 4 and travels the tractor 5 in the towing direction A, the rotary blades 56 form the planting grooves 7 of a predetermined width and depth on the field surface 6. Formed, its utility value increases.

[0022]

As described above in detail, according to the traction device of the continuous pot seedling transplanter according to the present invention, the residual plowing of the bottom of the planting groove is deleted by the cutter supported by the hitch of the walking tractor, Since the grounding surface of the continuous potted seedling transplanter is surely grounded to the bottom of the planting groove, the planting groove can be reliably formed by the opener of the continuous potted seedling transplanter. Stable transplantation by machine is guaranteed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall structure of a traction device of a continuous pot seedling transplanting machine according to the present invention.

FIG. 2 is a side view showing the entire structure of a continuous potted seedling transplanter targeted by the present invention.

FIG. 3 is a perspective view showing the structure of the traction device.

FIG. 4 is a side view showing a part of the traction device in an enlarged manner.

FIG. 5 is a side view showing a part of the traction device in a further enlarged manner.

FIG. 6 is a front view showing a part of the traction device in a further enlarged manner.

FIG. 7 is a perspective view showing another structure of the traction device.

[Explanation of symbols]

1 Continuous pot seedling transplanter 2 towing device 3 drive wheels 5 walking tractors 6 rotating blades 11 machines 12 consecutive pot seedlings 13 nursery boxes 14 Potted seedling placement section 20 openers 24 Handle 30 hitch 31 First support rod 32 hook (locking part) 33 Mainframe 40 Second support rod 45 auxiliary wheels 46 cutter

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01C 11/00-11/02 303

Claims (5)

(57) [Claims] 1. A pot seedling placing portion for placing continuous pot seedlings connected by a connecting piece is provided on the upper surface, and the lower surface serves as a ground surface, and a planting groove is formed on the bottom of a preset planting groove on the ground surface. A device for towing a continuous potted seedling transplanting machine, which is provided with an opener to be formed, and which continuously pulls out the continuous potted seedlings drawn from the potted seedling placing portion into the planting groove formed by the opener, which is driven. A first support rod having a walking tractor provided with a wheel, the first support rod having an engaging portion at an upper end capable of engaging a handle provided in the continuous pot seedling transplanting machine, in a hitch of the walking tractor, and the fixed planting A traction device for a continuous pot seedling transplanter, comprising a second support rod having a cutter at the lower end for removing residual tillage at the bottom of the groove. 2. The traction device for a continuous potted seedling transplanter according to claim 1, wherein the second support rod is attached to a hitch of the walking tractor so that its height can be adjusted. 3. The traction device for a continuous potted seedling transplanter according to claim 1, wherein the second support rod is rotatably attached to the hitch of the walking tractor. 4. The continuous potted seedling transplanter according to claim 1, 2 or 3, further comprising a pair of left and right auxiliary wheels that roll along the planting groove, attached to the second support rod. Towing device. 5. The traction device for a continuous pot seedling transplanter according to claim 4, wherein the cutter is arranged between the pair of auxiliary wheels.