JP2002291307A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling-delivering device not imposing restriction on the relation between the arrangement of a seedling-carrying platform and that of a seedling-conveying device. SOLUTION: This transplanter having the seedling-carrying platform for conveying a seedling tray, a seedling-conveying device for conveying the pot- seedling to a transplanting tine, and the seedling-delivering device for delivering the pot seedling in the seedling tray to the seedling-conveying device is regulated so that the seedling-delivering device may have a seedling-taking arm 19 having plural seedling-taking tines 29 and 29, and a moving structure 101 for reciprocally moving the seedling-taking arm 19 between the seedling-carrying platform and the seedling-conveying device, and guided members 105a and 105b may be installed at the end parts of the seedling-taking arm 19. The guided members 105a and 105b are guided by guides 31 and 31 installed in the sides, and the moving structure 101 drives the reciprocal arms 32a and 32b joined to the seedling-taking arm 19 by a crank movement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting machine for transplanting seedlings such as vegetables to a field, and more particularly, to extracting a potted seedling from a seedling tray to a seedling transfer device. Related to the seedling harvesting device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, the configuration of a planting section 15 of a transplanting machine for transplanting pot seedlings 5, 5,... .. Of a row of the seedling tray 6 from the seedling tray 6 in which the pot holes are formed in a horizontal direction with respect to the machine body traveling direction by a seedling collecting device 80 having a parallel link mechanism 81. While maintaining the relationship, the potted seedlings 5.5 are transferred to a predetermined position by the endless transporting body 22 provided in the seedling transporting device 14 provided at the rear, and transferred endlessly. There is a configuration in which the planting claw 50 inherits one by one from the end of the body 22.

In this seedling picking apparatus 80, first, for the work of taking out the potted seedlings, the rooting pot of one row of potted seedlings is pressed against the seedling holder by a seedling pushing mechanism provided on the lower side (bottom surface) of the seedling tray 6. 33. Further, with respect to the releasing operation of the pot seedling, the releasing member provided near the seedling transport device 14 hooks the locking member on the root pot of the pot seedlings 5, 5. .. Are generally released.

In the above series of operations of the seedling collecting apparatus 80, since the root pots of the pot seedlings 5, 5... Is being administered.

[0005]

However, in the seedling picking apparatus employing the above-described parallel link mechanism, the pot seedling 5.
The structure is inherited from the seedling tray to the seedling transfer device while maintaining the front-rear direction of 5... For this reason, it can be said that the arrangement relationship between the seedling mounting table that transports the seedling tray and the seedling transport device is restricted by the configuration of the seedling planting device. Also, in the above-described conventional technique, in removing and releasing the pot seedlings 5,..., The root pot is extruded or the like. If the pot is insufficient, the shape of the root pot is not maintained during extrusion or the like, and the extrusion or the like may fail. Here, by administering a large amount of the above-described coagulant, it is also conceivable to improve the formality of the root mortar, but the large amount of the coagulant is not preferable because it leads to hindering the growth of seedlings. .

[0006]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, as described in claim 1, a seedling mounting table for transporting the seedling tray, a seedling transport device for transporting the pot seedlings to the planting claws, and a seedling collecting device for transferring the pot seedlings of the seedling tray to the seedling transport device are provided. In the transplanter, the seedling picking device includes a seedling pick arm having a plurality of seed picking claws, and a moving mechanism that reciprocates the seed picking arm between the seedling mounting table and the seedling transfer device. A guided member is provided at the end, the guided member is guided by a guide provided on the side, and the moving mechanism is configured to drive a reciprocating arm connected to the seedling picking arm by crank motion.

According to a second aspect of the present invention, the seedling picking arm is formed of a bridge arm and support arms protruding from left and right ends of the bridge arm. A plurality of claw rotation shafts having seedling picking nails at the ends are pivotally provided, and a seedling opening / closing arm is provided on the support arm so as to be movable in the left-right direction. It is connected.

[0008] According to a third aspect of the present invention, the seedling picking nails are configured so that two adjacent ones are combined into one set, and the root pot of the potted seedling is wrapped and held from both sides.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an example in which the present invention is implemented in a riding transplanter, FIG. 2 is a side view of an implanted portion,
FIG. 3 is a rear view of the seedling picking device, FIG. 4 is a diagram showing an open state and a closed state of the seedling picking nail by the nail opening mechanism, and FIG. 5 is a diagram showing details of the interlocking mechanism and the engagement between the cam follower and the nail opening mechanism. , FIG.
FIG. 7 is a view showing a configuration of an opening / closing plate and a seedling picking nail, and FIG. 7 is a view showing a configuration of a conventional general planting portion. Further, the left-right direction and the up-down direction used below will be described as the left-right direction with respect to the body advancing direction and the body up-down direction as the up-down direction.

FIG. 1 shows an embodiment in which an implanting section 15 is arranged at the rear of a traveling section 1 of a riding transplanter via an elevating link mechanism 27. The traveling portion 1 includes a body frame 2 having a hood 9 covering an engine on an upper surface, a steering handle 4 and a steering seat 8, a pair of left and right front wheels 16 supporting a front portion of the body frame 2, And a pair of left and right rear wheels 17 supporting the rear part of the vehicle. On both sides of the bonnet 9, spare seedling platforms 30 are provided, on which the seedling tray before transplanting pot seedlings or the empty seedling tray after transplanting is placed. I can do it.

The planting mission case 20 of the planting section 15 is connected to a lifting link mechanism 27 so as to be able to move up and down with respect to the traveling section 1. The planting mission case 2
0, a seedling table 11 for intermittently transporting the seedling tray downward is installed.
The seedling transfer device 14 is installed so that the transfer direction is perpendicular (left-right direction) to the machine body movement direction. Further, a rotary planting mechanism 21 provided in a transmission case 55 extending rearward from the planting mission case 20 is installed diagonally below and rearward of the seedling conveying device 14, and behind the planting transmission case 14,
An earth covering ring 34 is provided. In the above, the embodiment in which the transplanting machine according to the present invention is applied to the riding type working machine has been described.However, the present invention is not limited to this embodiment, and may be applied to a walking type transplanting machine. I do.

Next, details of the planting section 15 will be described below. As shown in FIG. 2, the pot seedlings 5
Are transported intermittently downward at intervals of the pitch of the pot. In this way, transferred pot seedlings 5.5
Is a seedling transfer device 1 in which one row in the left and right rows is simultaneously taken out by the seedling collecting device 13 and provided in the left-right direction with respect to the machine body traveling direction.
Placed on 4. Then, it is inherited and planted by the planting claws 50 of the rotary planting mechanism 21.

Next, the configuration of the seedling collecting device 13 will be described in detail. As shown in FIG. 2 to FIG. 6, the seedling collecting device 13 includes a seedling mounting table 11 for transporting the seedling tray 6 and pot seedlings 5.5.
Seedling transfer device 14 for transferring seedlings 50 to planting claws 50, and seedling tray 6
Are transferred to the seedling transfer device 14, the seedling collecting device 13 includes:
Seedling arm 19 provided with a plurality of seedling claws 29
Between the seedling mounting table 11 and the seedling transfer device 14,
And a moving mechanism 101 for reciprocating the guide 9. Guided members 105 a and 105 b are provided at the ends of the seedling arm 19, and the guided members 105 a and 105 b are guided by guides 31 provided on the sides. The moving mechanism 101 drives the reciprocating arm 35a connected to the seedling picking arm 19 by a crank motion.

As shown in FIG. 4, the seedling picking arm 19 includes a bridge arm 19a and the bridge arm 19a.
And support arm portions 19b and 19c projecting from the left and right ends of the bridge arm 19a.
A plurality of claw rotating shafts 36,
Are pivotably mounted on the support arms 19b and 19c, and the seedling opening / closing arms 18a and 18b are provided so as to be movable in the left-right direction, and the claw rotating shafts 36/36.
18b.

As described above, the seedling picking arm 19 includes a bridge arm portion 19a that straddles the seedling tray 6 from above and below in the left-right direction, and the support arm portion 1 at one end from both ends of the bridge arm portion 19a.
9b and 19c protrude, and have a substantially "U" shape in plan view.

As shown in FIG. 4, in the bridge arm portion 19a, one ends of a plurality of claw rotation shafts 36 are supported so as to form a substantially "comb" shape in plan view. Also, the claw rotation shafts 36, 36
..At the tips of the seedlings, one each 29.29
... are arranged.

Here, a set of the seedling nails 29a and 29b will be described with reference to FIG. The seedling nails 29a and 29b
Is a set of two adjacent seedlings.
.. Are wrapped and held from both sides. In the shape of the inner surface where the two seedling claws 29, 29 ... are joined, the outer periphery of the root pot is formed in a cross-sectional view, and the pot seedlings 5, 5 ... are held firmly. , So as not to drop off from the seedling claws 29. Also, each claw rotation shaft 36a / 36b
The opening and closing plate 84a has a substantially elliptical shape in plan view.
One end of 84b (the lower end in FIG. 6) is penetrated. On the other hand, elongated holes 85a and 85b are formed at the other end portions of the opening and closing plates 84a and 84b, and the elongated holes 85a and 85b are connected to the seedling opening and closing arms 18a to be described later.
· It is pivotally connected to locking portions 98a and 98b protruding from 18b.

The pivoting is performed by a set of seedling nails 29a shown in FIG.
Explaining in the configuration of 29b, the opening / closing plate 84a arranged on the right side is fixed to the locking portion 98 of the seedling opening / closing arm 18a.
The opening / closing plate 84b pivotally connected to a and disposed on the left side is pivotally connected to the locking portion 98b of the seedling opening / closing arm 18b. This pivoting arrangement is identical to all other open / close plates 84.
The same applies to a · 84b. The “opening / closing operation of the seedling claw” will be described later.

As shown in FIG. 4, the support arm 19b
19c has a positioning groove 39 having a substantially “C” shape in cross section.
Are formed on the same side of the seedling picking arm 19 as the seedling picking claws 29, and are positioned at the turning points on the seedling tray 6 side and the seedling transfer device 14 side when the seedling picking arm 19 moves. 73, 73 are fitted. In this way, the angles of the support arms 19b and 19c at the seedling picking position on the seedling tray 6 side and the seedling release position on the seedling transfer device 14 side are regulated by the positioning rods 73, 73, and the seedling picking and seedling at a fixed angle are performed. Release is possible. The “mechanism for moving the seedling arm 19” (“movement mechanism”) will be described later.

Further, sliding holes 49A and 49B are formed in the supporting arm portions 19b and 19c in parallel with each other, and a seedling picking opening / closing arm 18a is provided in the sliding hole 49A, and a seedling is provided in the sliding hole 49B. The opening / closing arms 18b are respectively penetrated, and the supporting arm portions 19b and 19c located on the left and right of the seedling tray 6 are provided.
Are bridged by the seedling opening / closing arms 18a and 18b. Here, the seedling harvesting opening / closing arm 18b is urged to the left by a tension spring 86b with respect to the support arm 19c. With this tension spring 86b, the seedling claw 29
Are always closed.

Further, the movement of the seedling picking opening / closing arms 18a and 18b provided in parallel as described above is restricted by the interlocking mechanism. In the present embodiment, a connecting rod 87 and a tension spring 88 are used. As shown in FIG. 4 and FIG.
A long hole 89 is formed above the sliding hole 49A in 9b, a pin 92 projecting from the long hole 91 to the seedling opening / closing arm 18a is exposed, and the pin 92 is pivotally supported on one end of the connecting rod 87. . The connecting rod 87 is pivotally connected to a rotating shaft 93 protruding above the support arm 19b, and a locking pin 94 is protruded from an end opposite to the pin 92 to connect one end of a tension spring 88. Lock. The other end of the tension spring 88 is locked by a pin 95 projecting upward from the seedling opening / closing arm 18b. In this manner, when the seedling opening / closing arm 18a moves to the left in FIG. 4, the connecting rod 87 rotates clockwise about the rotation shaft 93, and the seedling harvesting opening / closing arm 18b is pulled by the tension spring 88.
4 moves rightward in FIG. The mechanism for moving the seedling opening / closing arm 18a (“opening mechanism”) will be described later.

Next, the "moving mechanism" for reciprocating between the seedling tray 6 and the seedling transport device 14 will be described. As shown in FIG. 3, guided members 105 a and 105 b are formed at the ends (farther from the bridge arm 19 a) of the support arms 19 b and 19 c of the seedling picking arm 19. In the present embodiment, the guided member is connected to the support shafts 90a and 90a extending from the ends of the support arms 19b and 19c.
90b and cam followers 48a and 4 rotating at the ends of the support shafts 90a and 90b with the cylindrical side surfaces as contact surfaces.
8b is pivotally supported.

Guides 31 are arranged between the seedling tray 6 and the seedling transport device 14 and outside the support arms 19b and 19c. The guide 31
A continuous guide groove 31a is formed in the base 31 so that the cam followers 48a and 48b rotate and move in the groove.

As shown in FIGS. 2 to 4, shaft holes 91a and 91b are formed substantially in the middle of the support arms 19b and 19c in a side view, respectively.
The pivot shafts 60a and 60b projecting from one end of the reciprocating arms 32a and 32b are rotatably supported on the 91b. The reciprocating arms 32a and 32b are configured to swing about pivot shafts 51a and 51b. In FIG. 2, a pivot shaft 7 is provided in the middle of the reciprocating arm 32a located on the right side.
6a is protruded, and the pivot shaft 76a is supported at one end of the connecting arm 35a. The other end of the connecting arm 35a
When the crank arm 77 is rotated about the crank arm shaft 52 as a center, the reciprocating arm 32 a swings via the connecting arm 35. The swing of the reciprocating arm 32a is
The support arm 19b is swung via the pivot shaft 60a, and the swing of the support arm 19b causes the bridge arm 19 to swing.
The support arm portion 19c provided on the other side of “a” swings. That is, the whole seedling picking arm 19 is configured to move through the supporting arm portions 19b and 19c by the swing of the reciprocating arms 32a and 32b.

Here, as shown in the side view of FIG. 2, the support arms 19b and 19c are connected to the pivot shafts 60a and 60a.
0b, the cam followers 48a and 48b are connected to the guides 3a and 3b as described above.
1 and 31, the pivot shafts 60a and 60b
The angle in the side view is determined by the two fulcrums of the cam followers 48a and 48b. In this way, the angle of the entire seedling arm 19 in side view is determined, and when moving between the seedling tray 6 and the seedling transport device 14, the seedling arm 19 can draw a certain trajectory. ing. Further, by adjusting the length of the components of the moving mechanism 101 and the shapes of the guides 31, the seedling picking arm 19 can be adjusted.
Can be set freely, and the arrangement of the seedling tray and the seedling transfer device can be set freely without being restricted by the seedling planting device.

Next, the "claw opening mechanism" that works in accordance with the swinging movement of the seedling picking arm 19 will be described. As shown in FIG. 4, there are two types of nail opening mechanisms, a nail opening mechanism 53a provided on the seedling tray 6 side and a nail opening mechanism 53b provided on the seedling transporting device 14 side. explain.

First, as shown in FIGS. 4 and 5, the claw opening mechanism 53a on the seedling tray 6 side has a cam 6 having an ascending gradient.
A cam follower 96 rotatably provided on the right end of the seedling opening / closing arm 18a is arranged along 3a.
The upward slope of the cam 63a swings from the seedling transfer device 14 of the seedling picking arm 19 toward the seedling tray 6, ie, the pot seedling 5.
.. Are arranged so as to ascend with respect to the cam follower 96, and as the seedling tray 6 is approached, the seedling picking opening / closing arm 18a moves to the left. Movement of the seedling opening / closing arm 18a to the left in FIG. 4 is performed until immediately before the seedling collecting claws 29, 29... Reach the seedling tray 6, and the seedling collecting claws 29, 29. , And at the same time, the cam 63a and the cam follower 96 are disengaged. The seedling picking arm 19 on the seedling tray 6 side
Up to the turning point of the rocking motion of
.. Reach the pot hole of the seedling tray 6 and
Until the tip of 9.29... Reaches the bottom of the root pot of the pot seedlings 5.5,... Acts in the closing direction by the urging of the tension spring 86b. Then, the outside of the root pot is wrapped by the seedling-claws 29. Then, after being turned back, it is swung toward the seedling transfer device 14 by the tension spring 86b while the closed state of the seedling claws 29 is maintained.

Here, the cam 63 in the pawl opening mechanism 53a
“a” is moved in the left-right direction by the crank 97. This is because when the seedling picking arm 19 turns back on the seedling tray 6 side and heads toward the seedling transfer device 14, the cam 63a
Is moved to the right so that it does not act on the cam follower 96, and the seedling-claw 29
This is to prevent the cam follower 96 from opening again due to the action of the cam follower 96.

Next, the claw opening mechanism 53b on the seedling transfer device 14 side
Then, a cam follower 9 rotatably provided on the right end of the seedling opening / closing arm 18a is provided on the cam 63b having an upward slope.
6 is made to follow. The upward slope of the cam 63 b is moved from the seedling tray 6 of the seedling picking arm 19 to the seedling transfer device 1.
.., The pot seedlings 5, 5,... Are lifted up with respect to the cam follower 96. The opening / closing arm 18a moves to the left. The movement of the seedling opening / closing arm 18a in the leftward direction reaches the turning point of the swinging movement of the seedling arm 19 on the seedling transfer device 14, that is,
Seedling release position, and at the turning point, 29.2
Are spread most greatly, and the pot seedlings 5, 5.

Next, the "opening and closing operation of the seedling picking nail" will be described with reference to FIGS. An opening / closing plate 84a is pivotally connected to a locking portion 98a protruding from the seedling opening / closing arm 18a. An opening / closing plate 84b is pivotally connected to the locking portion 98b protruding from the seedling opening / closing arm 18b. When the seedling opening / closing arm 18a moves leftward in the closed state A in FIG. 6 by the above-described claw opening mechanisms 53a and 53b, the opening / closing plate 84a moves the claw rotating shaft 36a.
Swings counterclockwise around. Here, the claw rotation shaft 36a
Is rotated through the open / close plate 84a counterclockwise, and pivots to the left in accordance with the counterclockwise swing of the open / close plate 84a, thereby causing the tip of the seedling removing claw 29a to swing counterclockwise.

When the leftward movement of the seedling opening / closing arm 18a moves along the connecting rod 54 to move the seedling opening / closing arm 18b rightward, the opening / closing plate 84b moves the claw rotating shaft 36b. Swing clockwise to the center. Here, since the claw rotation shaft 36b is penetrated by the opening / closing plate 84b, the claw rotating shaft 36b turns left in response to the clockwise swing of the opening / closing plate 84b, and swings the tip seedling claw 29b clockwise. . Thus, the seedling picking nail 29a rotates counterclockwise, and the seedling picking nail 29b rotates clockwise, increasing the distance between each other, resulting in the open state B in FIG. That is, the seedling claw 29 is opened.

As described above, the seedling nails 29, 29,.
.., Instead of pressing the root pots of the pot seedlings 5, 5,. In addition, since it is wrapped and held from both sides, the root mortar does not need to have strong regularity, and it is not necessary to administer a large amount of coagulant. In other words, there is no fear that the growth of the pot seedling is hindered by the coagulant.

[0033]

Since the present invention is constructed as described above, the following effects can be obtained. More specifically, as in claim 1, a transplanting machine including a seedling mounting table for transferring a seedling tray, a seedling transfer device for transferring a potted seedling to a planting claw, and a seedling collecting device for transferring the potted seedling of the seedling tray to the seedling transfer device. A seedling picking device, comprising: a seedling picking arm having a plurality of seedling picking claws; and a moving mechanism for reciprocating the seedling picking arm between the seedling mounting table and the seedling transporting device. The guided member is guided by a guide provided on the side, and the moving mechanism is configured to drive the reciprocating arm connected to the seedling picking arm by crank movement. When moving between the steps, the seedling picking arm can draw a fixed trajectory. Also, the trajectory of the movement of the seedling opening / closing arm can be freely set by adjusting the length of the components of the moving mechanism, the shape of the guide, and the like. The setting can be freely performed without being restricted by the device.

According to a second aspect of the present invention, the seedling picking arm is formed of a bridge arm and support arms projecting from left and right ends of the bridge arm. A plurality of claw rotation shafts having seedling picking nails at the ends are pivotally provided, and a seedling opening / closing arm is provided on the support arm so as to be movable in the left-right direction, and the claw rotation shaft is interlocked with the seedling picking opening / closing arm. Because of the connection, in the work of taking out and releasing the pot seedlings, since the configuration is not to push the root pot into the root pot, even if there is a risk of the root pot collapsing or the root pot of the grown pot seedling is insufficient, work is done The risk of failure is reduced.

According to a third aspect of the present invention, the seedling picking nails are configured such that two adjacent ones are combined to form a set and the root pot of the potted seedling is wrapped and held from both sides. Is not a configuration in which the root pot of the pot seedling is pressed, but a configuration in which the root pot is wrapped and held from both sides. In addition, since it is wrapped and held from both sides, the root mortar does not need to have strong regularity, and it is not necessary to administer a large amount of coagulant. In other words, there is no fear that the growth of the pot seedling is hindered by the coagulant.

[Brief description of the drawings]

FIG. 1 is a side view showing an example in which the present invention is implemented in a riding transplanter.

FIG. 2 is a side view of the planting section.

FIG. 3 is a rear view of the seedling collecting device.

FIG. 4 is a view showing an open state and a closed state of a seedling picking nail by a nail opening mechanism.

FIG. 5 is a diagram showing details of an interlocking mechanism and an engagement between a cam follower and a pawl opening mechanism.

FIG. 6 is a diagram illustrating the configuration of an opening / closing plate and a seedling nail;

FIG. 7 is a view showing a configuration of a conventional general planting section.

[Explanation of symbols]

 13 Seedling Picking Device 19 Seedling Arm 29 Seedling Claw 31 Guide 32a Reciprocating Arm 32b Reciprocating Arm 35a Connecting Arm 77 Crank Arm 19b Supporting Arm 19c Supporting Arm 101 Moving Mechanism 105a Guided Member 105b Guided Member

Claims (3)

[Claims] 1. A transplanter having a seedling mounting table for transferring a seedling tray, a seedling transfer device for transferring a potted seedling to a planting claw, and a seedling collecting device for transferring a potted seedling of the seedling tray to the seedling transfer device. A picking device, a seedling arm having a plurality of seedling claws,
A moving mechanism for reciprocating the seedling picking arm between the seedling mounting table and the seedling transfer device, a guided member provided at an end of the seedling picking arm, and a guided member provided on a side of the guided member. A transplanter, wherein a guide mechanism and a moving mechanism are configured to drive a reciprocating arm connected to a seedling arm by crank motion. 2. The seedling picking arm is formed of a bridge arm and support arms projecting from left and right ends of the bridge arm, and the bridge arm has a seedling pick at an end. 2. The method according to claim 1, wherein a plurality of claw rotation shafts are pivotally provided, and a seedling opening / closing arm is provided on the support arm so as to be movable in the left-right direction, and the claw rotation shaft is interlocked with the seedling collection opening / closing arm. Transplant machine. 3. The transplanting machine according to claim 2, wherein the seedling picking nails are combined into a set of two adjacent seedlings, and the root pot of the potted seedling is wrapped and held from both sides.