JP3365729B2 - Transplanter seedling tray feeder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter for automatically planting seedlings such as vegetables in a field at predetermined intervals.

[0002]

2. Description of the Related Art Conventionally, as a transplanter for automatically planting seedlings such as vegetables in a field at predetermined intervals, Japanese Patent Laid-Open No. 9-74 has been proposed.
There is one described in Japanese Patent No. 828. This transplanting machine is provided with a transplanting device behind the traveling body, and this transplanting device is a seedling placing table for mounting a seedling tray having a large number of pots vertically and horizontally, a planting device for planting seedlings in a field, and a seedling tray. It is mainly composed of a seedling dispensing device that takes out the seedlings one by one and conveys them to the planting device.

In the transplanting apparatus, while moving the seedling placing table in the horizontal direction, one horizontal row of seedlings is taken out from the seedling tray,
When the seedlings in a row are taken out, the seedling tray is vertically fed by one pitch of the pot portion in the vertical direction, and then the seedling platform is horizontally fed in the opposite direction to the above, and by repeating this,
All the seedlings are taken out from the seedling tray and transported to the planting device.

The mechanism for vertically feeding the above-mentioned seedling tray is configured as follows. That is, a vertical feed drive shaft for vertically feeding the seedling tray is provided, and a vertical feed gear is interlockingly connected to the vertical feed drive shaft so as to be rotatable in the same direction as the vertical feed direction, and is engaged with the engaging teeth of the vertical feed gear. A ratchet arm that regulates rotation in the vertical feed direction is provided, and an operating member that rotates these in the vertical feed direction is transmitted to the vertical feed drive shaft and the vertical feed gear via a one-way clutch only in the vertical feed direction. When the operating member rotates in the direction opposite to the vertical feed direction, the ratchet arm is pushed to release the engagement with the engaging tooth of the vertical feed gear, and the operating member moves in the vertical feed direction. When the operating member is provided with an engaging portion for returning the ratchet arm to engage with the engaging teeth of the longitudinal feed gear when rotated, the operating member rotates in the direction opposite to the longitudinal feed direction, and then in the longitudinal feed direction. By rotating the seedlings And longitudinal feeding drive shaft and the longitudinal feed gear being configured to rotate so as to one pitch longitudinal feed of the pot part b.

[0005]

In the above-mentioned conventional apparatus, the actuating member rotates in the direction opposite to the longitudinal feed direction, and the engaging portion engages the ratchet arm with the engaging teeth of the longitudinal feed gear. When it is pushed to release, the vertical feed gear and the vertical feed drive shaft are rotatable in the vertical feed direction.
When the force for vertically feeding the seedling tray acts on the vertical feed drive shaft (for example, by overrunning the one-way clutch), the seedling tray is vertically fed by one pitch or more of the pot portion.

In view of the above problems, it is an object of the present invention to prevent vertical feeding of the seedling tray when the ratchet arm is disengaged from the engaging teeth of the vertical feed gear. .

[0007]

The technical means taken by the present invention to achieve the above object comprises a longitudinal feed drive shaft for longitudinally feeding a seedling tray having a large number of pots vertically and horizontally. A vertical feed gear is interlockingly connected to the drive shaft so as to be rotatable in the same direction as the vertical feed direction, and a ratchet arm that restricts rotation in the vertical feed direction by engaging with engaging teeth of the vertical feed gear is provided. And the longitudinal feed gear are interlocked with an operating member for rotating them in the longitudinal feed direction via a one-way clutch so as to transmit rotational force only in the longitudinal feed direction, and when the operating member rotates in the direction opposite to the longitudinal feed direction. Then, the ratchet arm is pushed so as to disengage from the engagement teeth of the vertical feed gear, and when the operating member rotates in the vertical feed direction, the ratchet arm engages with the engagement teeth of the vertical feed gear. Engagement part to return to Provided on the operating member, the operating member rotates in the direction opposite to the vertical feed direction, and then rotates in the vertical feed direction to vertically feed the seedling tray by one pitch of the pot portion. In the seedling tray feeder of the transplanter adapted to rotate, when the engagement between the ratchet arm and the engaging teeth of the vertical feed gear is released, the vertical feed gear is engaged with the vertical feed gear. While restricting rotation in the vertical feed direction, when the vertical feed drive shaft and vertical feed gear are rotated in the vertical feed direction by the operating member,
In order to allow this rotation, a feed stop mechanism that disengages from the vertical feed gear is provided.

Further, the feed stop mechanism is pushed by the engaging portion of the operating member when the engaging portion of the actuating member pushes the ratchet arm so as to disengage the ratchet arm from the engaging teeth of the vertical feed gear. Lock claw that engages with the engaging teeth of the vertical feed gear from the front side in the vertical feed direction and disengages to the front side in the vertical feed direction when the vertical feed drive shaft and the vertical feed gear are rotated in the vertical feed direction by the operating member. It is also characterized by having.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 5 and 6, the vegetable transplanter 1 is a walking type having a transplanting device 3 and a steering handle 4 behind a traveling body 2, and is a soil block seedling while straddling the ridge R and traveling in the longitudinal direction thereof. Is to be planted in the ridge R at a predetermined interval.

The moving direction of the transplanting machine 1 is called the front-back direction, and the lateral direction orthogonal to the moving direction is called the left-right direction. The traveling body 2 has a pedestal 7 mounted and fixed to a front portion of a mission case 6 so as to project forward, an engine 8 and the like being mounted on the pedestal 7, and front and rear wheels 9 and 10 on both left and right sides. Has been done.

The power of the engine 8 is input to a power transmission mechanism in the mission case 6, and the power input in the mission case 6 is projected from the mission case 6 to the left and right sides of the wheel via a speed change mechanism. The first PT which is transmitted to the wheel transmission shaft 11 and is provided rearward of the wheel transmission shaft 11 and projects from the mission case 6 to the left and right sides.
It can be taken out from the O shaft 12 and the second PTO shaft 13 protruding upward and rearward.

A transmission case 14 is provided on the outer ends of the left and right wheel transmission shafts 11 so as to be vertically swingable about its axis, and the rear wheel 10 is supported below the transmission case 14.
Power is transmitted from the wheel transmission shaft 11 to the rear wheels 10 via the chain transmission mechanism in the transmission case 14, and the rear wheels 10 are rotationally driven. The transplanting device 3 is provided on a transplantation frame 15 mounted behind the traveling body 2, and has a planting body 16 for planting seedlings in the ridge R and a seedling supplying device 17 for supplying seedlings to the planting body 16. , Soil cover and crush roller 1
8 and a piercing means 19 for forming a hole for planting seedlings by the action of heat (or by making a cut) in the mulch film covering the ridge R.

The transplant frame 15 has a main frame 20 whose front portion is mounted and fixed to the mission case 6, the steering handle 4 whose front end is fixed to the rear end of the main frame 20, and the first PTO whose front portion is left and right. It is mainly composed of a movable frame 21 supported by a shaft 12 so as to be rotatable around left and right axes. A soil covering / squeezing roller 18 is attached to a rear portion of the movable frame 21, and the rear portion of the movable frame 21 is changed in height by the soil covering / squeezing roller 18 (unevenness).
In addition to being supported so as to follow, the vertical distance between the soil covering / squeezing roller 18 and the movable frame 21 is adjustable.

The plant body 16 is supported by the movable frame 21 so as to be vertically swingable via a swing link mechanism. This swinging link mechanism is driven by the power from the first PTO shaft 12 to move the planting body 16 so as to draw a long elliptical locus in the vertical direction, and the seedlings are supplied at the upper end side of the locus and the lower end of the locus. On the side, the planting body 16 is adapted to plunge into the ridge R.

Further, the planting body 16 is provided with an opener at the lower part which can be opened and closed back and forth, and the opener opens forward and backward by an interlocking tool when it plunges into the ridge R at the lower end side of the locus of the planting body 16. , A seedling can be planted by forming a transplant hole in the ridge R, dropping the seedling into the transplant hole, and then soiling the soil from the right and left of the transplant hole by the covering / squeezing rollers 18 and suppressing the soil. .

The seedling supplying device 17 is arranged on the upper rear side of the main frame 20 and supports a seedling tray T in which a large number of soil block seedlings S are accommodated vertically and horizontally, and supports the seedling tray T in a rearwardly inclined manner and intermittently vertically and horizontally. From the seedling tray feeder 22 for feeding, and the seedling feeder 23 arranged on the front side of the seedling tray feeder 22 for picking up the seedlings one by one from the seedling tray T and transporting them to the plant 16. Mainly composed.

The seedling tray T is made of plastic, is thin and has flexibility, and is provided with a large number of pot portions P arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The opening edge portions of are connected to each other in a planar shape. Then, the pot block P is filled with bed soil, seeded therein, irrigated, and seedlings are raised to grow the soil block seedlings S.

The seedling feeder 23 is a pot portion P of the seedling tray T.
It has a seedling picking nail 24 for picking up the seedling S from the seedling picking nail 2
As shown in FIGS. 5 and 7, 4 is supported via a claw movement mechanism 27 driven by the power being transmitted from the second PTO shaft 13 via the universal joint 25, the power transmission mechanism in the gear case 26 and the like. In addition, it is moved so as to draw a reciprocating locus represented by a forward locus X and a backward locus Y.

The seedling feeder 23 will be described together with its operation. FIG. 7 shows a standby state before taking out the seedlings S from the seedling tray T. From this state, the drive shaft 29 is rotationally driven by the power from the gear case 26. Then, the crank body 28 rotates around the drive shaft 29, and the roller 30 externally fitted to the crank pin 28a on the tip side of the crank body 28 causes the drive shaft to move within the arcuate portion of the long hole 32 of the swing arm 31 in the longitudinal center thereof. When it is rotated around 29, it is pushed by the roller 30 to push the push link 33.
Oscillates around the pin 34, the nail support 36 and the seedling picking nail 24 move toward the block soil of the seedling S in the pot P through the nail fitting 35, and the seedling picking nail 24 is placed on the block soil. Is stabbed.

At this time, the claw guide 37 is immovable because the actuating member 38 is in contact with the actuating piece 39, and the base 40 of the claw support 36 is moved forward, so that the lock arm 41 moves the holding body 42. The claw support 36 and the seedling take-out claw 24 are prevented from returning by engaging the engaging portion. After that, when the crank body 28 further rotates, the swing arm 31 swings forward around the support shaft 43 via the crank pin 28a and the roller 30, and the seedling picking nail 24 and the nail guide 37 move forward to move the seedling S. Is withdrawn from the pot P. Then, the roller 44 provided on the holding body 42 causes the cam groove 4 of the guide plate 45 to move.
6 slides, the seedling take-out claw 24 moves to the lower end of the forward trajectory X, and is brought into a downward posture. Then, a spring (not shown) is released, and the claw guide 37 is released by its elastic force.
Advances to push the seedling S away from the seedling take-out nail 24,
The seedling S is put into the plant 16 from above.

After that, the seedling take-out claw 24 moves on the backward movement locus Y and returns to the position and state before taking out the seedlings shown in FIG. As shown in FIGS. 5, 6, 8 and 9, the seedling tray feeding device 22 includes a seedling placing table 47 on which the seedling tray T is placed, and the seedling placing table 47 is arranged in the left-right direction. It is supported by a pair of upper and lower guide rails 48 fixed to the handle 4 so as to be movable in the left-right direction.
Further, the seedling placing table 47 has a placing plate 49 that supports the bottom portion of the seedling tray T over the pot portions P in a horizontal row, and the placing plate 49 is between a pair of side plates 50 that are arranged facing each other in the left-right direction. And the left and right ends of the mounting plate 49 are fixed to the facing surfaces (the left and right inner surfaces) of the left and right side plates 50.

At the lower part between the left and right side plates 50, the vertical feed drive shaft 5 is provided.
1 are arranged in the left-right direction, and are provided on the left and right side plates 5
A vertical feed driven shaft 52 is disposed in the left-right direction at the upper part of the space between 0s, a pair of left and right drive sprockets 53 is fixed to the drive shaft 51, and a pair of left and right driven sprockets 54 is attached to the driven shaft 52. It is fixed. An endless chain 55 is hung between the drive sprocket 53 and the driven sprocket 54, and the chain 55 is engaged with a gap between the pot portions P in the vertical direction of the seedling tray T. The transport pin 56 is attached so as to project inward in the left-right direction. Therefore, the drive shaft 51 rotates in the direction shown by the arrow A in FIG.
Is pushed by the transport pin 56 and can be vertically fed. The left and right side plates 50 are connected by other connecting members in addition to the vertical feed drive shaft 51 and the driven shaft 52.

As shown in FIG. 8, a pair of upper and lower brackets 57 is attached to the rear side of the outer surface in the left-right direction of the left and right side plates 50 of the seedling placing table 47.
A roller 59 is attached to the guide rail 48 via a support shaft 58 so as to be freely rollable in the left-right direction. The bracket 57 is composed of a first support plate 57A fixed to the side plate 50 side, and a second support plate 57B connected to the first support plate and having a support shaft 58 attached thereto.

The first support plate 57A is superposed on the outer surface of the side plate 50, and is formed by a pair of bolts 60 penetrating the first support plate 57A and the side plate 50 and nuts screwed to the bolts 60, respectively. The second support plate 57B is attached and fixed to the side plate 50, and the second support plate 57B is superposed on the inner surface of the first support plate 57A in the left-right direction and penetrates the first support plate 57A and the second support plate 57B. The bolts 61 and nuts screwed into the bolts 61 are attached and fixed to the first support plate 57A.

The bolt insertion hole 62 for inserting the bolt 60 is formed in the first support plate 57A in the direction along the depth direction of the pot portion P of the seedling tray T placed on the placing plate 49. The bolt insertion hole 63 for inserting the bolt 61, which is a long hole in D and is formed in the second support plate 57B, extends in the vertical direction of the seedling tray T placed on the placement plate 49. It is a long hole that is long in the direction E (direction orthogonal to the D direction).

Therefore, by loosening the bolts 60 and 61, the seedling placing table 47 can be moved in the D direction and the E direction. By adjusting the position of the seedling placing table 47 in the D direction and the E direction, The position of the pot part P of the seedling tray T with respect to the seedling take-out claws 24 can be adjusted in the D direction and the E direction, and the position where the seedling take-out claws 24 are inserted into the block soil of the seedlings S in the pot part P is optimal by the adjustment. It can be set to the position.

In this seedling tray feeder 22, the size of the opening of the pot portion P is different, but the intervals between the opening edge portions of the pot portion P are substantially the same (that is, the pitch between the centers of the pot portions P is different). ) Two kinds of seedling trays T are mounted, and therefore, the transport pins 56 are not provided so as to engage with each other between the pot portions P, but the two kinds of seedling trays T are installed. The gaps between the pot portions P in the vertical direction are provided at positions that coincide with each other in the vertical direction.

The lateral feeding mechanism of the seedling tray T will now be described. As shown in FIG. 9, between the left and right bearing members 64 arranged on both left and right sides of the seedling placing table 47 and attached and supported by the handle 4. A lateral feed shaft 65 having a special screw (Napier screw) formed by joining troughs of the left and right screws cut at the same pitch and passing through the left and right side plate 50 is rotatably supported around the left and right shafts. A slider 66 that engages with a special screw on the shaft is externally fitted to the shaft. An engaging portion 67 is formed on the slider 66 so as to project therefrom, and the engaging portion 67 is inserted between a pair of left and right engaging pieces 68 provided on the back surface of the support plate 49 of the seedling placing table 47.

Power is transmitted to the transverse feed shaft 65 from the gear case 26 via a winding transmission mechanism in a transmission case 69, and the transverse feed shaft 65 is intermittently rotated and driven, and the transverse feed shaft 65 is intermittently driven. When rotationally driven, the slider 66 moves left and right, and the seedling placing table 47 is intermittently reciprocated in the left and right direction. The lateral feed amount is switchable in the gear case 26 so that the lateral feed amount corresponding to the lateral pitch of the pot portions P of the two kinds of seedling trays T that are selectively used can be selected. Further, the engaging portion 67 of the slider 66 is provided on the seedling placing table 4 for the seedling picking-out claw 24.
The left and right engaging pieces 68 can be moved in the up-down direction and in any direction orthogonal thereto so that the relative position of 7 can be adjusted.

Next, the vertical feed mechanism of the seedling tray T will be described. As shown in FIGS. 3, 4 and 9, the vertical feed cams 70 are fixed to the left and right sides of the horizontal feed shaft 65, and the seedling mounting table is fixed. A vertical feed operating shaft 71 is rotatably supported between the left and right side plates 50 on the 47, and the vertical feed operating shaft 71 is attached to the seedling placing table 4.
A pair of left and right followers 72 that engage with the vertical feed cam 70 when 7 is moved to the leftmost end or the rightmost end is provided.

The left end of the vertical feed operating shaft 71 projects from the left side plate 50, and the link 73 is attached to this projecting portion.
Is fixed, and the tip side of the link 73 is connected to the connecting member 74.
The connecting member 74 is interlockingly connected with the actuating member 75 via an interlocking member, and the connecting member 74 has a turnbuckle structure at an intermediate part thereof and is expandable and contractible. The distance between the support 77 and the support 77 is adjustable.

The operating member 75 is fixed to a one-way clutch 78 which is rotatably supported by a support shaft portion 51a provided on the left end side of the vertical feed drive shaft 51 protruding from the left side plate 50 of the seedling placing table 47. There is. A tension coil spring 79 is engaged with the arm portion 75b of the actuating member 75, and the actuating member 75 is biased to rotate in the direction A shown in FIG.

On the left end side of the vertical feed drive shaft 51, engaging teeth 80a having different pitches around the axis of the drive shaft 51,
The first and second vertical feed gears 80, 81 each having 81a are arranged side by side in the left-right direction.
Numerals 0 and 81 are fixed to a boss 82 which is supported on the vertical feed drive shaft 51 so as to be relatively rotatable around the left and right axes. The boss 82 allows the first and second vertical feed gears 80 and 81 to rotate together only in the vertical feed direction (shown by arrow A in FIG. 3).
It is interlocked with the one-way clutch 78 (thus, idling in the opposite direction). In addition, the first vertical feed gear 80 is formed with a hole 85 into which a connecting pin 84 fixed to a clutch shifter 83 axially movable on the left end side of the vertical feed drive shaft 51 is fixed. By moving the clutch shifter 83 in the axial direction of the vertical feed drive shaft 51, the connecting pin 84 is inserted into and removed from the hole 85.

On the upper front side of the first and second vertical feed gears 80 and 81, first and second ratchet arms 86 and 87 for restricting the rotation of these vertical feed gears 80 and 81 are arranged. . These first and second ratchet arms 86, 8
7 is the engaging teeth 80a of the corresponding vertical feed gears 80, 81,
81a are engaged with each other, and the rear upper side of each of them is pivotally supported by a lateral support shaft 89 provided on a support plate 88 fixed to the side plate 50 so as to be vertically swingable. The coil springs 90 and 91 are urged to swing downward, and the respective engaging portions 86 are urged.
a and 87a engage with the engaging teeth 80a and 81a of the corresponding first and second vertical feed gears 80 and 81. Further, the ratchet arms 86 and 87 are provided with engagement surfaces 86b and 87b that engage with engagement pins (engagement portions) 75a provided on the actuating member 75.

First and second ratchet arms 86, 87
Near the lower part of the first and second ratchet arms 86,
A selection member 92 which selectively pushes up 87, and separates the engaging portions 86a, 87a of the ratchet arms 86, 87 of the pushed up side from the engaging teeth 80a, 81a of the first and second vertical feed gears 80, 81. Is provided. The operation of the intermittent vertical feed mechanism of the seedling tray T in the above configuration will be described. First, the selection member 92 causes the first and second ratchet arms 86,
Either one of the engaging portions 86a, 87a of the 87
The other of the first and second ratchet arms 86 and 87 is selected to be pushed up so as to be engaged with the engaging teeth 80a and 81a of the vertical feed gears 80 and 81.

In the illustrated example, the second ratchet arm 87 is pushed up to engage the engaging portion 8 of the first ratchet arm 86.
6a is engaged with the engaging teeth 80a of the first vertical feed gear 80. Further, the vertical feed cam 70 is intermittently rotated in the arrow B direction together with the horizontal feed shaft 65. Then, when the seedling placing table 47 has moved to the left and right ends, the follower 72 is pushed in the direction of arrow C in FIG.
By the movement in the direction of arrow C, the vertical feed actuating shaft 71 rotates, pulling the connecting member 74 rearward and upward via the link 73, whereby the actuating member 75 and the one-way clutch 78 as well as the longitudinal feed driving shaft. The engaging pin 75a moves rearward by rotating in the direction opposite to the arrow A direction around the shaft center of 51, and the engaging pin 75a presses the engaging surface 86b of the first ratchet arm 86. The first ratchet arm 86
And the engaging portion 86a is disengaged from the engaging tooth 80a of the first vertical feed gear 80. At this time, the one-way clutch 7
8 idles, and the first and second vertical feed gears 80 and 81 do not rotate.

Next, the follower 72, the link 73, the connecting member 74, and the actuating member 75 are returned to their original positions by the urging force of the tension coil spring 79 and other return springs. The first and second vertical feed gears 80 and 81 are rotated in the arrow A direction, and the vertical feed drive shaft 51 is rotated in the arrow A direction via the clutch shifter 83, while the first ratchet arm 86 of the first ratchet arm 86 is rotated. Engaging part 8
6a engages with the engaging teeth 80a of the first vertical feed gear 80 to restrict the rotation of the vertical feed drive shaft 51.

Thus, when the soil block seedlings S are taken out from the pots P arranged in a horizontal row, the seedling tray T is vertically fed by a distance corresponding to the longitudinal interval of the pots P. There is. As described above, by selecting one of the first and second vertical feed gears 80 and 81, two types of seedling trays T having different pitches of the pot portions P due to the different sizes of the openings of the pot portions P are provided. The first vertical feed gear 80 corresponds to the seedling tray T having the smaller opening (smaller pitch) of the pot portion P,
The second vertical feed gear 81 corresponds to the seedling tray T with the larger opening (larger pitch) of the pot P.

In the vertical feed mechanism having the above structure, the follower 72 engages with the cam 70, the actuating member 75 rotates (swings) in the direction of arrow A, and the engaging pin 75a engages with the ratchet arm 86. , 87 are pushed upward to engage the engaging portions 86a, 87a.
When the tooth is disengaged from the engaging teeth 80a, 81a, the one-way clutch 78 is overrun and a force for rotating the vertical feed drive shaft 51 in the direction of arrow A acts.
Has been vertically fed, and then the actuating member 75 is indicated by the arrow A.
By swinging in the direction, the seedling tray T is moved to the pot part P.
Will be vertically fed by 1 pitch or more in the vertical direction.

Therefore, in the present invention, the engaging portion 86
When a, 87a is disengaged from the engaging teeth 80a, 81a,
First and second feed stop mechanisms 95 and 96 for restricting the rotation of the first and second vertical feed gears 80 and 81 in the arrow A direction are provided. As shown in FIG. 1, the first feed stop mechanism 95 corresponds to the first ratchet arm 86 and the first vertical feed gear 80, and the first ratchet arm 86 and the first vertical feed gear 80. It has a locking member 97 arranged on the side of 80. The locking member 97 is a rocking member 99 that is rockably supported around a shaft center in the left-right direction via a support shaft 98 fixed to the seedling placing table 47 side, and the rocking member 99.
A lock claw 100 that is integrally formed with or fixed to the first vertical feed gear 80 and that abuts and engages with the engagement tooth 80a of the first vertical feed gear 80 from the direction A (the front side of the vertical feed direction A) in the direction of the arrow. It consists of

A bracket 101 is fixed to the swing member 99, and a spring hook portion 102 is provided on the bracket 101. The spring hook portion 102 and the spring hook portion 103 provided on the seedling placing table 47 side are provided. A tension spring 104 is mounted, and the tension spring 104 biases the swinging member 99 in the G direction shown by the arrow in FIG. Further, a regulating member 105 that regulates the swinging of the swinging member 99 in the direction of the arrow G is provided on the seedling placing table 47 side.

In the structure described above, as shown by the phantom line in FIG. 1, the engaging portion 86 of the first ratchet arm 86.
When a is engaged with the engaging tooth 80a of the first vertical feed gear 80, the swinging member 99 is in contact with the regulating member 105, and the lock claw 100 is disengaged from the engaging tooth 80a. It is in a position. From this state, when the actuating member 75 rotates in the direction indicated by the arrow A, as shown by the solid line in FIG.
a pushes up the first ratchet arm 86,
The engagement pin 75a pushes the swinging member 99 in the counter arrow G direction, and the lock claw 100 abuttingly engages the engagement tooth 80a in the counter arrow A direction, that is, from the front side in the vertical feed direction A.

Therefore, the engaging portion 86a is engaged with the engaging tooth 80a.
When it is disengaged, the lock claw 100 engages with the engaging tooth 80a to restrict the rotation of the first vertical feed gear 80 in the arrow A direction, and the first vertical feed gear 80 moves in the arrow A direction. Even if a force to rotate the lock teeth is applied, the locking claws 100 push the engaging teeth 80a back to their original positions. Next, when the actuating member 75 rotates in the arrow A direction and the first vertical feed gear 80 rotates in the arrow A direction, the lock claw 100 moves the arrow C in the arrow G direction by the spring force of the tension spring 104. That is, it escapes to the front side in the vertical feed direction A, and the rotation of the first vertical feed gear 80 in the arrow A direction is allowed.

The restricting member 105 is detachable (or the position thereof can be changed). By removing the restricting member 105, the swinging member 99 can be moved to a position where it is not in abutting engagement with the engaging pin 75a. Therefore, when the first ratchet arm 86 is pushed up by the selection member 92, the swinging member 99 can be prevented from engaging with the engagement pin 75a.

As shown in FIG. 2, the second feed stop mechanism 96 corresponds to the second ratchet arm 87 and the second vertical feed gear 81, and the first feed stop mechanism 96.
The configuration is substantially the same as. That is, the second ratchet arm 87 and the second vertical feed gear 81 have the locking members 106 arranged laterally, and the locking members 97 are the locking members 97.
A swing member 108 that is swingably supported around a shaft center in the left-right direction via a support shaft 107 that is fixed to the seventh side, and is integrally formed or fixed to the swing member 108. And a lock claw 109 which is in abutting engagement with the engaging tooth 81a of the second vertical feed gear 81 in the direction of arrow A.

The swing member 108 has a bracket 11
0 is fixed, and the bracket 110 has a spring hook 1
11 is provided, and the spring hook portion 111 and the seedling stand 47 are provided.
The tension spring 11 extends over the spring hooking portion 112 provided on the side.
3, the swinging member 108 is biased by the tension spring 113 in the G direction shown in FIG. Further, a regulating member 114 that regulates the swinging of the swinging member 108 in the direction of the arrow G is provided on the seedling placing table 47 side.

The operation is similar to that of the first feed stop mechanism 95, the restricting member 114 is detachable (or the position can be changed), and the swinging member 108 is engaged by removing the restricting member 114. The position can be changed to a position that does not abut and engage with the pin 75a, so that when the second ratchet arm 87 is pushed up by the selection member 92, the swing member 108 can be prevented from engaging with the engagement pin 75a. It has become.

In the present invention having the above structure, the operating member 7
By the rotating operation of the direction of arrow A and the direction of arrow A of 5,
Longitudinal feed gear engaging tooth 80 of ratchet arm 86, 87
a, 81a engagement and disengagement, and locking claws 100,
The vertical feed gear engagement teeth 80a and 81a of 109 are alternately engaged and disengaged to simplify the structure.

The first and second feed stop mechanisms 95, 9
6 may be supported on the first and second ratchet arms 86, 87 side, and by supporting on the ratchet arm 86, 87 side, the ratchet arm 8 by the selection member 92.
By selecting 6, 87, the feed stop mechanisms 95, 96 can also be selected at the same time.

[0050]

According to the present invention, when the ratchet arm is disengaged from the engaging teeth of the vertical feed gear, the vertical feed gear is engaged to rotate the vertical feed drive shaft in the vertical feed direction. In addition to restricting the vertical feed drive shaft and the vertical feed gear in the vertical feed direction by the operating member, a feed stop mechanism that separates from the vertical feed gear to allow this rotation is provided. The vertical feed of the seedling tray when the engagement of the vertical feed gear with the engaging teeth is released can be prevented.

Further, the feed stop mechanism is pushed by the engaging portion of the actuating member when the engaging portion of the actuating member pushes the ratchet arm so as to release the engagement with the engaging tooth of the longitudinal feed gear. Lock claw that engages with the engaging teeth of the vertical feed gear from the front side in the vertical feed direction and disengages to the front side in the vertical feed direction when the vertical feed drive shaft and the vertical feed gear are rotated in the vertical feed direction by the operating member. In addition to the above effects, when the ratchet arm is disengaged from the engaging teeth of the vertical feed gear, a force in the vertical feed direction acts on the vertical feed drive shaft and the like. Also, there is an effect that the vertical feed gear and the like can be pushed back to the original position by the lock claw, and the feed stop mechanism can be operated by the operation of the operation member.

[Brief description of drawings]

FIG. 1 is a side view showing the relationship between a ratchet arm, a vertical feed gear, and a feed stop device.

FIG. 2 is a side view showing the relationship between a ratchet arm, a vertical feed gear, and a feed stop device.

FIG. 3 is a side view of a vertical feeding mechanism of a seedling tray.

FIG. 4 is a sectional view of a vertical feeding mechanism of a seedling tray.

FIG. 5 is an overall side view of the transplanter.

FIG. 6 is an overall side view of the transplanter.

FIG. 7 is a partial side sectional view of a seedling feeding side surface.

FIG. 8 is a side view of the seedling placing table.

FIG. 9 is a sectional view of a seedling stand.

[Explanation of symbols]

51 Vertical feed drive shaft 75 Actuator 78 one-way clutch 80 First vertical feed gear 80a engagement tooth 81 Second vertical feed gear 81a engagement tooth 86 First Ratchet Arm 87 Second ratchet arm 95 First feed stop mechanism 96 Second feed stop mechanism A Vertical feed direction T seedling tray P pot section

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Claims (2)

(57) [Claims] 1. A vertical feed drive shaft for vertically feeding a seedling tray having a large number of pots vertically and horizontally, and a vertical feed gear is interlockingly connected to this vertical feed drive shaft so as to be rotatable in the same direction as the vertical feed direction.
The one-way clutch is provided with a ratchet arm that engages with the engaging teeth of the vertical feed gear and restricts rotation in the vertical feed direction, and the vertical feed drive shaft and the vertical feed gear have an operating member that rotates them in the vertical feed direction. Interlockingly connected so as to transmit the rotational force only in the vertical feed direction via the, and when the operating member rotates in the direction opposite to the vertical feed direction, the ratchet arm is disengaged from the engaging teeth of the vertical feed gear. When the operating member rotates in the vertical feed direction, the operating member is provided with an engaging portion for returning the ratchet arm to engage with the engaging teeth of the vertical feed gear. The seedlings of the transplanter, which rotate the vertical feed drive shaft and the vertical feed gear so as to vertically feed the seedling tray by one pitch of the pot part by rotating in the vertical feed direction after rotating in the opposite direction. For tray feeder When the ratchet arm is disengaged from the engaging teeth of the vertical feed gear, the longitudinal feed gear is engaged to restrict rotation of the vertical feed drive shaft in the vertical feed direction, A seedling tray feeder for a transplanter, which is provided with a feed stop mechanism that is disengaged from the vertical feed gear to allow the rotation when the vertical feed drive shaft and the vertical feed gear are rotated in the vertical feed direction. 2. The feed stop mechanism is pushed by the engaging portion of the actuating member when the engaging portion of the actuating member pushes the ratchet arm to disengage from the engaging teeth of the longitudinal feed gear. Lock claw that engages with the engaging teeth of the vertical feed gear from the front side in the vertical feed direction and disengages to the front side in the vertical feed direction when the vertical feed drive shaft and the vertical feed gear are rotated in the vertical feed direction by the operating member. The seedling tray feeder of the transplanter according to claim 1, further comprising: