JPH11235107A - Towing transplanter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To flexibly couple a handle to a fuselage so as to suppress unnecessary movement transmitted from a towing person to the fuselage and effectively transmit traction force to the fuselage. To SOLUTION: An opener for forming a planting groove on a lower surface of a rear portion is provided on a front portion of a body 10 provided with a transplanting mechanism on an upper surface, respectively.
The mounting bracket 44 in the shape of a letter is fixed, and the mounting
Use 45 to attach the handle 43 so that it can swing up and down,
The swing of the handle 43 is controlled by a lock / unlock mechanism 46. The lock / unlock mechanism 46 includes a handle 43
A pin 49 is provided at the tip of a lever 48 that is swingably mounted using a shaft 47, and the pin 49 is provided in a mounting bracket 44 in a U-shaped groove 51.
At the same time, and this pin 49 is
When implanted, the lever 49 is operated to release the pin 49 from the U-shaped groove 51 and the handle 43 is set free at the time of implantation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tow-type transplanter for continuously transplanting seedlings grown in a series of continuous pots with or without pots.

[0002]

2. Description of the Related Art Japanese Patent Publication No. Sho 54-28327 and Japanese Patent Publication No. Sho 58-11 are examples of such continuous pots.
No. 817, for example. Since this aggregate has a structure in which continuous pots are overlapped with each other via a water-soluble adhesive, a large number of pots appear in a honeycomb shape when expanded from the knitting state. By placing the seeds in the box and sowing the soil, a large number of seedlings can be intensively raised. Further, according to the seedling raising by this aggregate, in addition to rooting does not occur between the seedlings because they grow independently in the pot, and because the water-soluble adhesive is degraded by watering during seedling, after raising the seedling for a predetermined number of days When one end of the continuous pot is pulled, the aggregate of the continuous pots that are superimposed can be easily separated and pulled out in a line.

[0003] By the way, there have been various types of transplanters for seedlings grown using the aggregate of the continuous pots described above. For example, Japanese Patent Application Laid-Open No. Hei 5-308822 discloses a towing handle ( Transplanting the handle) into the planting groove while maintaining the continuous state of the continuous pot (potted body seedling) on an airframe provided with an opener that forms a planting groove on the field surface on the rear lower surface. A transplanter provided with a mechanism is disclosed. Japanese Patent Application No. 9-244675 (unknown) discloses
On the same body as described above, the two thin films of the continuous pot are peeled, soiled seedlings are taken out from the pot, and the seedlings are continuously sent to the rear of the body by a conveyor to be transferred into the planting groove. An implanter having a mechanism is disclosed. According to these transplanting machines, Japanese Patent Application Laid-Open No. 5-308822, page 3, column 4, lines 40-45, or Japanese Patent Application No. Hei 9-244.
No. 675, page 12, paragraph number [0033], by pulling the fuselage with the handle and synchronizing the transplantation mechanism with the movement, the planting groove formed by the opener Potted seedlings or soild seedlings are continuously fed into the inside, and transplantation can be performed easily.

[0004]

However, according to the conventional towing type transplant described above, since the handle for towing is fixedly provided at the front part of the fuselage, the towing person's body swings directly to the fuselage. As a result, the formation of the planting groove by the opener or the feeding of potted seedlings and soil seedlings becomes unstable, and there is a problem that it is difficult to plant accurately. Also, because the point of force to which the towing force is applied is constant, depending on the height or vertical movement of the tower,
There is a problem that the traction force cannot be effectively applied to the airframe, and extra force is required for traction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object the need to flexibly couple a handle to an airframe so that extra movement transmitted from the towing person to the airframe can be achieved. Another object of the present invention is to provide a transplanter capable of effectively transmitting traction force to an airframe while effectively contributing to ensuring planting stability and improving operability.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a continuous towing machine provided with a towing handle at the front and an opener for forming a planting groove on the field surface at the rear lower surface. In a transplanting machine provided with a transplanting mechanism for taking out seedlings raised in a pot assembly together with or from the pot and continuously feeding the seedlings into the planting groove, the handle is configured to swing vertically. And a lock / unlock mechanism for locking and unlocking the swing of the handle is interposed between the handle and the body.

In the towing type transplanter configured as described above, when the handle is unlocked at the time of transplantation, the handle swings according to the vertical movement of the tower, and the swing of the tower is directly transmitted to the machine body. Not only does it disappear, but the steering wheel moves to a force point suitable for the tower, and the towing force is effectively transmitted to the aircraft. Further, at the time of rotation of the body, for example, by locking the handle, the body can be operated to rotate with the weight applied to the handle.

In the present invention, it is desirable that the lock / unlock mechanism is configured to perform a lock operation in response to upward swing of the handle. In this case, the handle can be locked at a high position, so that weight can be effectively applied to the handle. Further, it is desirable that the lock / unlock mechanism be configured to perform an unlock operation by operating a lever, and in this case, the handle can be unlocked with one touch.

[0009]

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

FIGS. 4 to 6 show the overall structure of an implanter according to one embodiment of the present invention. This transplanter intends to continuously transplant the seedlings 3 raised using the aggregate 2 of the continuous pot 1, and the continuous pot 1 has two strip-shaped thin films 4A, as shown in FIG. 4B are joined at a predetermined pitch with a water-resistant adhesive, and the joints (connecting pieces) 5 are formed into pots 6 between the joints. Are superposed via a water-soluble adhesive. At the time of raising seedlings, the aggregate 2 in the knitting state is expanded in a honeycomb shape and a raising seedling box (not shown).
The seedlings are stuffed into the soil and cultivated in a greenhouse for a certain period of time. Then, the water-soluble adhesive degenerates by the watering during the seedling raising, and after raising the seedling, when one end of the continuous pot 1 is pulled, the aggregate 2 of the stacked continuous pots 1 is easily separated, as shown in FIG. Can be pulled out in a row.

The transplanter has a body 10 provided with an opener 11 on the lower surface on the rear side in the traveling direction F.
Above, the front side of the traveling direction F (hereinafter, this traveling direction F
From the front side of the fuselage, and the side in the opposite direction is referred to as the rear side of the fuselage) in order from the pot seedling placement part 12 on which the aggregate 2 of the continuous pots 1 is placed, and from the pot seedling placement part 12. A pot seedling guiding section 13 for guiding the continuous pots 1 drawn in a line, and two thin films 4A, 4B of the continuous pot 1 drawn from the pot seedling guiding section 13 are peeled to the left and right, and the pot 6 The thin film peeling device 14 for exposing the seedlings 3 with soil, and the soiled seedlings 7 fed from the thin film peeling device 14
Conveyor 15 for nipping and transporting to the rear side of the machine while standing up
And are arranged.

In this case, the machine body 10 is provided with
It is composed of a main plate 16 provided with a potted seedling guide 13 and a conveyor 15 and a sub-plate 17 provided with the opener 11.
The main plate 16 is connected so as to be inclined downward at a relatively large angle (about 30 degrees) from the front side of the fuselage to the rear side of the fuselage when the is placed horizontally on the field surface G (FIG. 4). . The opener 11 has a front end closed at an acute angle and an open rear end, and forms a planting groove on the field surface G in accordance with the progress of the airframe 10. Meanwhile, the sub-plate
A slit (not shown) is provided in 17, and the soild seedling 7 transported by the transport conveyor 15 is supplied into the opener 11 through the slit of the sub-plate 17. The sub-plate 17 is provided with a pair of earth approaching plates 18 and a pair of pressure-reducing wheels 19.

Below the main plate 16 of the body 10, a grounding rolling wheel 21 for supporting the front of the body and a gauge wheel 22 for supporting the rear of the body are provided. The grounding rolling wheel 21 and the gauge wheel 22 are rotatably mounted on tip ends of a pair of brackets 24 and 25 extending from left and right side surfaces of a box 23 fixed to the lower surface of the main plate 16. The diameters of the ground contact rolling wheel 21 and the gauge wheel 22 are set such that the main plate 16 is inclined at a predetermined angle with respect to the field surface G and the sub-plate 17 is parallel to the field surface G. ing. Further, the width of the gauge wheel 22 is set to be equal to or smaller than the width of the ground rolling wheel 21,
Therefore, the gauge wheel 22 is configured to roll on the pressure-reducing surface reduced by the grounding rolling wheel 21. Also opener
The width of 11 is sufficiently smaller than the width of the gauge wheel 22, and the opener 11 moves on the pressure-reducing surface reduced by the contact rolling wheel 21 to form a planting groove on this surface.

Below the main plate 16, a pair of auxiliary wheels 26 are provided. This pair of auxiliary wheels 26
The box 23 located on the rear end side of the main plate 16
Using a common shaft 27 (FIG. 4) on the left and right side surfaces of the hinge bracket 28, a base end portion is rotatably attached to a distal end portion of a hinge bracket 28 which is pivotally mounted. Each hinge bracket 28 can rotate freely between a solid line position and a two-dot chain line position (approximately 180 degrees) where a stopper piece (not shown) protruding inwardly is engaged with the lower surface of the box 23. Has become. Each hinge bracket 28 is normally urged upward by a spring 29 interposed between an intermediate portion in the longitudinal direction thereof and the main plate 16, whereby the pair of auxiliary wheels 26 The retracted position (solid line position) raised inside the fuselage so that it is higher than the open position, and the contact position (double-dashed line position) lowered toward the rear of the fuselage so as to be lower than the opener 11 It is designed to be positioned.

The pot / seedling guide 13 provided on the body 10 is provided with a guide plate separate from the main plate 16 of the body 10.
It is formed by 30. The guide plate 30 has a triangular shape, and a narrow passage opening 31 is formed at the intersection of a pair of upright wall portions 30a standing upright from both sides (FIG. 5).
On the lower surface of the guide plate 30, the leading end is connected to the conveyor 15
The base end of a support bar 32 extending to the inside of the conveyance path is fixed, and the continuous pot 1 drawn from the aggregate 2 on the pot seedling mounting portion 12 passes through the passage 31 of the guide plate 30 While being supported by the support bar 32, it is extended to the rear side of the fuselage. Thus, the guide plate 30 is connected to the body 10 via the adjusting means 33.
The installation height of the support bar 32 is changed by changing the mounting position, and accordingly, the transfer height of the continuous pot 1 drawn out from the passage 31 is also changed. Become so.

The aggregate 2 of the continuous pots 1 may be transferred from the seedling raising box to the pot seedling mounting part 12, or may be placed on the pot seedling mounting part 12 together with the seedling raising box. However, here, the nursery boxes are placed together. In this case, the continuous pot 1 must be drawn out over the edge of the seedling box. Therefore, in the present embodiment, the pot seedling placement section 12 and the pot seedling guide section 13
(Guide plate 30) A connecting plate 34 is provided rotatably (FIGS. 4 and 5), and the free end of the connecting plate 34 is inserted into the seedling raising box so that the upper surface of the connecting plate 34 It is used as a moving route.

The thin film peeling device 14 is provided with left and right guide members 35A and 35A disposed opposite to the passage 31 of the potted seedling guide 13.
B and two pull-out roller pairs 36 arranged outside of the guide members 35A and 35B and offset to the front of the body.
A, 36B, and two take-up reels 37A, 37B disposed outside of each of the pull-out roller pairs 36A, 36B and offset to the front side of the fuselage (FIG. 6). The left and right pull-out roller pairs 36A, 36B and the take-up reels 37A, 37B are rotated synchronously by a drive mechanism (not shown) housed in the box 23. The two thin films 4A and 4B peeled off at the same time are rotated by guide roller pairs 36A and 36B on the left and right, respectively, to guide members 35A and 35A.
It is drawn out to the front side of the fuselage by bypassing 35B, and is further wound on the corresponding take-up reels 37A, 37B. In addition,
The peripheral speed of the winding reels 37A and 37B is adjusted by a sliding mechanism (not shown) according to the number of windings (winding diameter) of the thin films 4A and 4B.

The conveyor 15 comprises a pair of belt conveyors (first conveyors) 38 for holding the root block 7a of the seedlings 7 with the soil fed from the thin film peeling device 14 and the leaves 7b of the seedlings 7 with the soil. A pair of belt conveyors (second
Conveyor 39). The first conveyer 38 has a starting end which is a guide member 35 of the thin film peeling device 14.
A, 35B are positioned close to each other, while the second conveyor 39 is positioned above the end of the first conveyor 38 with its starting end wrapped. These first and second conveyors 38 and 39 are, like the thin film peeling device 14,
The drive mechanism (not shown) accommodated in the box 23 is driven to rotate at the same speed. Here, the gears of the drive mechanism are set so that their transport speed is the same as the traveling speed of the machine body 10. A ratio or pulley ratio is set. In addition,
As the drive source of this drive mechanism, the ground rolling wheel 21 is used, and between the two is actuated by a power transmission mechanism having a clutch mechanism (not shown) intermittently operated by an operation lever 40 (FIGS. 4 and 5). Are linked.

The present transplanter is adapted to be used by being pulled manually, and a T-shaped towing handle 43 composed of a shaft 41 and a handle 42 is provided at the front of the fuselage 10. . As shown in FIGS. 1 to 3, the handle 43 has a hollow shaft attached to a rotating shaft 45 whose shaft 41 is bridged to a U-shaped mounting bracket 44 fixed to the front end of the box 23 below the body 10. By being pivotally mounted via 45a (FIG. 2), it can swing up and down. And this handle 43
A lock / unlock mechanism 46 for locking and unlocking the swing of the handle 43 is interposed between the mounting bracket 44 and the mounting bracket 44. The lock / unlock mechanism 46 is provided with a lever 48 having an intermediate portion pivotally attached to a shaft portion 41 of a handle 43 using a shaft 47 and capable of swinging up and down, and attached to a distal end portion of the lever 48. Pin 49, a cam 50 integrally formed on the peripheral surface of the mounting bracket 44, a U-shaped groove 51 provided on the peripheral surface of the mounting bracket 44 so as to be connected to the cam 50, a pin 49 and a handle 43. A tension spring 52 is interposed between the shaft portion 41 and the distal end portion. The lever 48 is formed of two plates 48a and 48b. The two plates are disposed so as to sandwich the shaft portion 41 of the handle 43 from right and left, and carry the shaft 47 and the pin 49. (Fig. 2). One plate 48a of the two plates is longer than the other plate 48b, and the longer portion extends below the shaft 41 of the handle 43.

In the lock / unlock mechanism 46,
The pin 49 at the end of the lever 48 is connected to the cam 50 provided on the mounting bracket 44.
The upper part can be slid and fitted into the U-shaped groove 51.
With this operation, the lever 49 is now operated to put the pin 49 on the cam 50, and when a vertical force is applied to the handle 43, the pin 49 slides on the cam 50, and the handle 43 moves in the vertical direction. Swing is allowed (FIG. 1). On the other hand, when the handle 43 is swung upward by a certain angle or more from this state, the pin 49
Fits into the U-shaped groove 51 on the mounting bracket 44, and at this time, since the urging force in the groove bottom direction is applied to the pin 49 from the tension spring 52, the pin 49 becomes immovable with respect to the mounting bracket 44. The handle 43 is locked (FIG. 3). To release the lock, the other end of the lever 48 is pushed down as shown by an arrow A in FIG. 3 to release the pin 49 from the U-shaped groove 51 and at the same time slightly swing the handle 43 downward. As a result, the handle 43 is free to swing (free).

The downward swing limit of the handle 43 is the position where the shaft portion 41 abuts on the U-shaped bottom of the mounting bracket 44 (shown by a two-dot chain line in FIG. 1).
The handle 43 can freely swing between a position where the mounting bracket 44 contacts the U-shaped bottom and a position where the pin 49 of the lock / unlock mechanism 46 fits into the U-shaped groove 51. . The shaft portion 41 of the handle 43 is composed of two shaft members 41a and 41b which are slidably fitted to each other, and the fitting depth of these two shaft members 41a and 41b is changed as appropriate. By fixing both with the screw member 53, the handle length can be made suitable for the user.

Hereinafter, the transplanting operation performed by the transplanter configured as described above will be described. When transplanting, operate the operation lever 40 in advance to disconnect the clutch mechanism (not shown),
The power transmission between the drive mechanism of the thin film peeling device 14 and the conveyor 15 and the grounding rolling wheel 21 is interrupted. Then, after placing the aggregate 2 after raising the seedlings on the pot seedling placing portion 12 on the machine body 10, the continuous pot 1 is pulled out from the aggregate 2 through the passage 31 of the guide plate 30, and the end side thereof is The two thin films 4A, 4B are manually peeled off to an appropriate length, and each thin film 4A, 4B is peeled off by a thin film peeling device.
The 14 guide members 35A and 35B are bypassed and pulled out toward the front of the machine body, and further guided to the corresponding take-up reels 37A and 37B through the draw-out roller pairs 36A and 36B, and the respective leading ends are taken up by the take-up reels 37A and 37B. Fix to 37B.

After the preparation is completed, the handle 43 is grasped, and the transplanter is towed to the starting point of planting and aligned in the transplanting direction. At this time, the pin 49 is detached from the U-shaped groove 51 by operating the lever 48 of the lock / unlock mechanism 46, and the towing handle 43 is kept free. After operating the operation lever 40 to connect the clutch mechanism, the handle
The aircraft 10 is advanced in the traveling direction F by pulling 43. Then
The preceding grounding rolling wheel 21 rolls on the field surface G to suppress the soft upper layer, and the subsequent gauge wheel 22 rolls on the flattening surface formed by the grounding rolling wheel 21.
10 moves on the field surface G while sinking in parallel by the amount of sinking of the grounding rolling wheel 21. In this case, gauge wheel 22 and opener
Since the positional relationship with 11 is constant, opener 11
Moves in a constant posture at a constant height level, and as a result, the depth of the planting groove formed by the opener 11 is constant regardless of the hardness of the field surface. Further, since the handle 43 swings up and down within a predetermined angle range, the swing of the towing person is not directly transmitted to the body 10, and the opener 11
Thereby, the planting groove is formed stably. Further, since the handle 43 moves to the point of force suitable for the towing person, the towing force can be effectively transmitted to the aircraft 10, and the towing becomes easy.

In accordance with the progress of the machine body 10, the ground rolling wheels 21
The rotation of the drive mechanism drives the thin film peeling device 14 and the conveyor 15
To the pull-out roller pair 36A, 36 in the thin film peeling device 14.
At the same time as B and the take-up reels 37A and 37B rotate, the first conveyor 38 and the second conveyor 39 in the conveyor 15 rotate. Then, a pull-out roller pair in the thin film peeling device 14
When 36A and 36B rotate, each thin film 4 sandwiched between them rotates.
A tensile force is applied to A and 4B, and a force in the peeling direction is applied to the continuous bowl 1, so that the joint portion 5 (FIG. 6) of the two thin films 4A and 4B is continuously peeled to the left and right. These two thin films 4
By peeling A and 4B, the seedlings 3 in each pot body 6 are sequentially exposed with soil, and are fed out one by one toward the first conveyor 38 of the conveyor 15 as soiled seedlings 7. On the other hand, each of the thin films 4A, 4A drawn out by the draw-out roller pair 36A, 36B.
B is gradually wound on the corresponding winding reels 37A and 37B. At this time, the rotation speed of each of the take-up reels 37A and 37B is adjusted by a slide mechanism (not shown) in accordance with an increase in the take-up diameter, and the thin films 4A and 4B are smoothly wound.

Soiled seedling 7 fed from thin film peeling device 14
The first end of the first conveyor 38 has guide members 35A and 35B.
, And immediately enters the first conveyor 38 due to a recoil at the time of peeling, and is conveyed to the rear side of the machine body with the root block portion 7a held therebetween. As described above, the first conveyor 38 first allows the root block 7
a, the first conveyer 38 continues to move even if the leaf 7b of the soiled seedling 7 fed from the thin film peeling device 14 and the leaf of the seedling 3 in the subsequent continuous pot 1 overlap. There is no concern that the leaf portion 3a of the seedling 3 is pinched and pulled out, and the soild seedlings 7 can be stably conveyed one by one. In addition, soiled seedling 7
Is a support bar 32 extended from the guide plate 30 of the potted seedling guide 13.
As it moves toward the first conveyor 38 while being supported by the first conveyor 38, the adjusting means 33 conveys a predetermined height.

The leaf 7b of the soiled seedling 7 conveyed to the rear side of the machine by the first conveyor 38 is clamped by the second conveyor 39 near the end of the first conveyor 38. And
The root block 7a of the soiled seedling 7 is the first conveyor.
As soon as it is released from the second conveyor
The process proceeds to 39, and is transported further to the rear of the aircraft. At this time, since the end of the first conveyor 38 and the start of the second conveyor 39 are wrapped with each other, while the root block 7a of the seedling 7 with soil is being sandwiched by the first conveyor 38, Then, the second conveyor 39 sandwiches the leaf portion 7b of the soiled seedling 7, so that the soiled seedling 7 is reliably transferred from the first conveyor 38 to the second conveyor 39. The first
If the end of the conveyor 38 does not overlap with the start of the second conveyor 39, the leaves 7b of the soiled seedlings 7 conveyed by the first conveyor 38 may fall to the front of the machine. In such a case, there is a risk that the seedlings 7 with soil may be released before the second conveyor 39 clamps the leaves 7b, and the delivery of the seedlings 7 with soil becomes unstable.

The transport speed of the transport conveyor 15 including the first and second conveyors 38 and 39 is as described above.
The moving speed of the thin film 4A and the moving speed of the thin film 4A by the thin film peeling device 14 are set to be smaller or larger than the moving speed of the conveying conveyor 15. For example, the transport pitch of the soiled seedlings 7 transported by the transport conveyor 15 is larger or smaller than the interval between the pots 6 in the continuous pot 1. In this case, the peeling speed of the thin film by the thin film peeling device 14 can be arbitrarily changed by changing the gear ratio in a drive mechanism (not shown).

In this manner, the soiled seedlings 7 conveyed to the rear side of the machine by the second conveyor 39 have their leaf portions 7
b, the lower portion thereof from the leaf portion 7b hangs down vertically by its own weight, and the second conveyor 39 may be inclined downward toward the rear side of the fuselage together with the main plate 16, The vertically hanging portion of the soiled seedling 7 gradually enters the opener 11 through the slit of the sub-plate 17 during the transportation thereof, and
It moves into the planting groove formed by. On the other hand, the soil around the planting ditch formed by the opener 11
Simultaneously with the passage of 11, it falls into the trace of passage, and the fallen soil captures the soiled seedling 7. At this stage, the soiled seedling 7 is released from the second conveyor 39. At this time,
As described above, the moving speed of the body 10 and the conveying speed of the seedlings 7 with the soil by the first and second conveyors 38 and 39 are the same as described above. The seedling 7 becomes stationary with respect to the field surface G.
Is buried in the soil while maintaining its vertical attitude. Then, around the seedling 7 embedded in the soil, the soil is further gathered by the earthing plate 18, and the gathered soil is crushed by the subsequent crushing wheel 19, and the soild seedling 7 is It will be surely planted on the field surface G. In this case, the planting depth of the soiled seedlings 7 depends on the transport height by the second conveyor 39. When the transport height is high, the planting is shallow, and when the transport height is low, the planting is deep. Becomes Therefore, the guide plate 30, that is, the support bar
By changing the installation height of 32, the planting depth of the seedling 7 with soil can be adjusted.

In the transplanting operation, at the stage when the transplantation for one ridge has been completed, the transplanter is rotated to transplant the next ridge.
To disengage the clutch mechanism (not shown), and then swing the towing handle 43 upward so that the pin 49 of the lock / unlock mechanism 46 is fitted into the U-shaped groove 51.
To lock. The locking position of the handle 43 is quite high as shown in FIG. 3, so if the tower's weight is left behind, the body 10 can be easily lifted with the grounding rolling wheel 21 as a fulcrum. If the airframe 10 is turned as it is, the transplanter can easily turn.

After the transplant operation is completed, the auxiliary wheels 26 are rotated from the retracted position (solid line position) to the ground contact position (two-dot chain line position) while lifting the rear portion of the body 10 as shown in FIG. Then, the gauge wheel 22 and the opener 11 float up from the field surface G, and the machine body 10 is supported by the auxiliary wheel 26 and the grounding rolling wheel 21, so that the transplanter can smoothly run on the road surface. become able to.

Here, the structure of the lock / unlock mechanism (46) for locking and unlocking the handle 43 is arbitrary, and may be, for example, a structure as shown in FIG. In FIG. 7, the same parts as those shown in FIGS. A lock / unlock mechanism 60 shown in FIG. 7 has a disk 61 fixed to a hollow shaft 45 a fitted to a rotation support shaft 45 of a handle 43, and is provided on the outer periphery of the disk 61 in the mounting bracket 44. A groove 62 that can be aligned with the U-shaped groove 51 is partially provided, and a box under the body 10 is provided.
A base end portion of an L-shaped claw member 63 is pivotally mounted on a front surface of the L-shaped claw member 63 by a shaft 64.
A tension spring 65 that normally urges the claw member 63 downward is interposed therebetween.

The tip of the claw member 63 is extended to a position where it can be fitted into the U-shaped groove 51 provided in the mounting bracket 44.
The diameter of the disk 61 is set so that the outer periphery is located slightly outside the cam surface 50 of the mounting bracket 44.
Therefore, when the groove 62 of the disk 61 is in a position not aligned with the U-shaped groove 51 of the mounting bracket 44, the tip of the claw member 63 rests on the peripheral surface of the disk 61, and the handle 43 is free to swing (free). It becomes a state. In this case, since the disk 61 rotates integrally with the handle 43 and the tip of the claw member 63 is pressed against the peripheral surface of the disk 61 by the tension spring 65, the handle 43 swings upward,
When the groove 62 of the disk 61 is aligned with the U-shaped groove 51 of the mounting bracket 44, the tip of the claw member 63 automatically enters the grooves 62 and 51, and the handle 43 is locked. The claw member 63 is integrally provided with a lever 66. When the lever 66 is lifted upward as shown by an arrow B in FIG.
And 51, the lock is released, and the handle 43 can swing freely.

It should be noted that the present invention does not limit the type of the transplanting mechanism provided on the airframe 10, and the type of the transplanting mechanism may be, for example, as shown in Japanese Patent Application Laid-Open No. Hei 5-308822. There is also included a type in which the continuous pot 1 is continuously sent to the rear side of the machine body and taken out into the planting groove without taking out the seedling (soiled seedling) while maintaining the continuous state. Further, the type of the continuous pot is also arbitrary, and instead of the two thin films 4A and 4B as in the above embodiment, for example, one thin film as shown in the above-mentioned Japanese Patent Publication No. 54-28327. A plurality of slits may be formed in the plate, and the slices may be alternately developed left and right to form a pot.

[0034]

As described above in detail, according to the towing type transplanter of the present invention, the handle for towing is connected to the body so as to be able to swing up and down, and the handle and the body are connected. A lock / unlock mechanism for locking and unlocking the swing of the handle is interposed between the vehicle and the vehicle, so that unnecessary movement transmitted from the towing person to the aircraft is suppressed, and the traction force is effectively applied to the aircraft. Is transmitted, which has an effect of largely contributing to improvement of operability as well as securing of planting stability.

[Brief description of the drawings]

FIG. 1 is a side view showing an attachment structure of a tow handle in an implanting machine as one embodiment of the present invention.

FIG. 2 is a plan view showing a mounting structure of a towing handle in the transplanter.

FIG. 3 is a side view showing a locked state of the towing handle.

FIG. 4 is a side view showing the overall structure of the transplanter.

FIG. 5 is a plan view showing the overall structure of the transplanter.

FIG. 6 is a plan view schematically showing a mechanical part of the transplanter.

FIG. 7 is a side view of the towing handle of the transplanter, showing another mounting structure partially released.

[Explanation of symbols]

 Reference Signs List 1 continuous pot, 2 continuous pot aggregates, 3 seedlings 6 pots, 7 seedlings with soil 10 airframes, 11 openers 12 pots and seedlings placement section, 13 pots and seedlings guide section 14 thin film peeling device, 15 transport conveyor 21 ground rolling wheel , 22 gauge wheel 43 towing handle 46,60 lock / unlock mechanism 48,66 lever 49 pin, 51 U-shaped groove, 63 pawl member 52,65 tension spring

Claims (3)

[Claims] 1. A seedling raised in a continuous pot assembly on a machine body provided with a towing handle at the front and an opener at the rear lower surface to form a planting groove on the field surface. A transplanting mechanism provided with a transplanting mechanism for taking out from the plant and continuously feeding the same into the planting groove, wherein the handle is connected to the body so as to be able to swing up and down, and the handle is provided between the handle and the body. A towing type transplanter characterized by interposing a lock / unlock mechanism for locking and unlocking the swing of a handle. 2. The towing type transplanter according to claim 1, wherein the lock / unlock mechanism performs a locking operation in response to upward swing of the handle. 3. The towing type transplanter according to claim 1, wherein the lock / unlock mechanism is configured to perform an unlocking operation by a lever operation.