JP5056156B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seedling transplanter, and in particular, can be used as a seedling transplanter that supplies seedling trays in a form that has been grown using seedling trays in which seedling pots are arranged vertically and horizontally, and is mainly effective for transplanting vegetable seedlings. It relates to a seedling transplanting machine.

While the seedling tray grown in a square mat shape supplied from the seedling tray supply port at the top of the tray guide is transferred to the seedling planting device side at the bottom of the tray guide, the seedling in the seedling tray is taken out by the seedling extraction device. The present applicant has applied for a seedling transplanter equipped with a seedling supply device for performing seedling planting by the seedling planting device.
JP 2002-233218 A

  In the seedling transplanter described in Patent Document 1, the seedling tray transferred from the upper part to the lower part of the tray guide is taken out by the seedling extracting device and transferred to the seedling planting device. The seedling picking device holds a seedling in a seedling pot to one strain, takes it out from a seedling tray, and supplies it to a supply cylinder of a seedling planting device. A predetermined seedling is obtained by a combination of a cam mechanism and a double crank mechanism. It is the structure which has a pair of right and left seedling extraction needles operated by the extraction locus. Further, the seedling planting device is composed of a pair of beak bodies whose lower ends are opened and closed in conjunction with an up and down operation by a link mechanism.

  As described above, both the seedling extraction device and the seedling planting device have complicated operation parts, so that the seedling transfer process from the seedling tray to the planting position in the field becomes complicated, and it is impossible to plant at high speed. There was a limit to work efficiency. In addition, there are difficulties in assembly, maintenance, manufacturing costs, and the like.

  Then, the subject of this invention is providing the seedling transplanting machine provided with the apparatus which can take out a seedling and plant a seedling with a comparatively simple structure.

The above problem can be solved by the following solution means.
The invention of claim 1 is provided with a tray guide (4) for transferring the seedling tray (A) replenished from the upper seedling tray supply port (4a) to the lower side, and a seedling tray is provided below the tray guide (4). Take out the seedling (E) of (A), provide a pair of seedling planting disks (9) for rotating and planting in the field, and provide a cover ring (43) on the rear side of the seedling planting disk (9), The rotation direction of the seedling planting disk (9) and the transfer direction of the tray guide (4) are set in opposite directions, and the timing of holding and releasing the seedling (E) by the pair of seedling planting disks (9) can be adjusted. A seedling having a configuration in which an adjustment operation tool is provided and a position where the pair of seedling planting disks (9) sandwich the seedling (E) can be changed to a position where an operator sitting on the seat (40) can supply the seedling (E). It is a transplanter.

The invention according to claim 2 provides a seedling stand (50) inclined above the tray guide (4) so that the seedlings face the seat (40) side along the tray guide (4). It is a seedling transplanting machine described in 1.

In the invention of claim 3, when taking out the seedling (E) of the seedling tray (A), a member for pushing the seedling (E) from the tray guide (4) to the seedling planting disk (9) is provided on the tray guide (4). a seedling transplantation machine of claim 1 provided therein.

According to a fourth aspect of the present invention, there is provided an outer plate having a diameter substantially equivalent to an outer diameter of the inner plate (48) covering the central rotating shaft and the surrounding cover ring (43) on the side surface of the cover ring (43). (49) is provided, and a protrusion (48a) is provided on the circumference of the inner plate (48) formed by cutting out a portion corresponding to the inner diameter of the outer plate (49). A drive wheel that welds the plate (49), has a steering handle (13) at the rear end of the vehicle body (11), and can change the vehicle height by vertically swinging the wheel case (14) by expansion and contraction of the lift cylinder (18). (15) is provided on both left and right sides, and the vehicle height is changed based on detection of the height of the cocoon (C) by the ground sensor (19) to control the seedling planting depth to be constant. a seedling transplanting machine of the mounting come to.

The invention of claim 5 is provided with a tray guide (4) for transferring the seedling tray (A) replenished from the upper seedling tray supply port (4a) to the lower side, and a seedling tray is provided below the tray guide (4). Take out the seedling (E) of (A), provide a pair of seedling planting disks (9) for rotating and planting in the field, and provide a cover ring (43) on the rear side of the seedling planting disk (9), The rotation direction of the seedling planting disk (9) and the transfer direction of the tray guide (4) are set to be opposite to each other , and an inner plate (48) covering the central rotation shaft portion is provided on the side surface of the cover ring (43). An outer plate (49) having a diameter substantially corresponding to the outer diameter of the surrounding earth ring (43), and an inner plate (48) formed by cutting out a portion corresponding to the inner diameter of the outer plate (49). Protrusions (48a) are provided on the circumference, and the projections (48a) A side plate (49) and welded seedling transplantation machine.

According to the first aspect of the invention, after receiving the tray guide (4) and the seedling (E) in the seedling tray (A) in the tray guide (4), the seedling (E) is planted in the field by rotating it. Since the seedling (E) is simply planted by the pair of seedling planting disks (9) that perform the seedling, the seedling transfer process from the seedling tray (A) to the planting position in the field is simplified and planted at high speed. This improves planting efficiency. In addition, a seedling transplanter that is advantageous in its assembly, maintenance, manufacturing cost, etc. can be obtained. Further, the operator sitting on the seat (40) can supply the seedlings (E) one by one to the position where the seedling planting disc (9) sandwiches the seedlings (E), and can plant them in the field. Can be used as a seedling transplanter, and can be handled semi-automatically when it cannot be transplanted fully automatically depending on the type of seedling, breeding form, etc., improving versatility.

According to the invention according to claim 2, in addition to the effect of the invention according to claim 1, the worker can easily perform the seedling supply work.

According to the invention according to claim 3, in addition to the effect of the invention according to claim 1, the removal of the seedling from the seedling tray (A) can be promoted, and the accuracy of the seedling removal is improved.

According to the invention of claim 4, in addition to the effect of the invention of claim 1 , a step can be obtained and welded between the outer plate (49) and the inner plate (48), and a plate configuration without waste is obtained. In addition, it is possible to change the vehicle height based on detection of the height of the cocoon (C) by the ground sensor (19) and to control the seedling planting depth to be constant.

According to the invention according to claim 5, after receiving the tray guide (4) and the seedling (E) in the seedling tray (A) in the tray guide (4), the seedling (E) is planted in the field by rotating it. Since the seedling (E) is simply planted by the pair of seedling planting disks (9) that perform the seedling, the seedling transfer process from the seedling tray (A) to the planting position in the field is simplified and planted at high speed. This improves planting efficiency. Further, it is advantageous in its assembly, maintenance, manufacturing cost, etc. Further, a step can be obtained and welded between the outer plate (49) and the inner plate (48), and a plate configuration without waste is obtained. "

Embodiments of the present invention will be described with reference to the drawings.
In this specification, the left and right sides are referred to as the left side and the right side, respectively, in the forward direction of the seedling transplanter, the forward direction is referred to as the front side, and the reverse direction is referred to as the rear side.

  FIG. 1 is a left side view of the walking seedling transplanter according to the present embodiment. The seedling planting machine in FIG. 1 is a machine that performs seedling planting work while supplying seedlings using the seedling tray A, and is particularly suitable for transplanting vegetable seedlings. The seedling tray A is a seedling E (see FIG. 2), which is formed by raising and forming seedling pots D vertically and horizontally on a rectangular tray A. 2) is delivered to the pair of seedling planting disks 9, 9, and the pair of seedling planting disks 9, 9 are configured to directly plant the seedling E in the field.

  In the seedling transplanting machine of FIG. 1, a tray guide 4 for transferring a seedling tray A formed so as to detour back and forth in a U-shape is provided at the upper front side of a handle frame 8 in the form of a hand tractor. A disc-shaped seedling planting disk 9 for receiving the seedling E from each seedling pot D of the seedling tray A guided by the transfer 4 and planting the seedling E in the field is arranged. An auxiliary seedling placing table 10 on which the seedling tray A is placed is arranged in front of the seedling transplanting machine.

A schematic configuration of the seedling transplanter in FIG. 1 will be described.
The vehicle body 11 of the hand tractor has an engine 12 mounted at the front, a handle frame 8 at the rear, and a steering handle 13 at the rear end. On both the left and right sides, a drive wheel 15 that can be vertically swung by a wheel case 14 to adjust the vehicle height, and a front auxiliary wheel 16 are arranged. The drive wheel 15 is driven by the power of the engine 12 transmitted through the wheel case 14. The front end of the wheel case 14 is rotatable up and down around the axle housing 17 and can be moved up and down by expansion and contraction of a lift cylinder 18 and a rolling cylinder (not shown) by hydraulic pressure to change the vehicle height. The lift cylinder 18 changes the vehicle height according to the height of the vehicle by changing the control valve of the hydraulic circuit of the lift cylinder 18 by detecting the height of the vehicle C by the ground sensor 19 at the lower part of the vehicle body 11. The seedling planting depth by the seedling planting disk 9 is maintained and controlled to be constant.

  Further, the auxiliary wheel 16 can also be moved up and down in synchronization with the drive wheel 15 to change the vehicle height in a parallel state. An arm 20 integrated with the wheel case 14 that rotates around the axle housing 17 is linked to and linked with the lift cylinder 18 by a link rod 21. The link 22 that is linked to the wheel transmission case 14 is linked to a front wheel arm 23 that supports the auxiliary wheel 16 so as to be rotatable up and down.

  When the drive wheel 15 moves downward relative to the vehicle body 11 due to the extension of the lift cylinder 18, the front auxiliary wheel 16 also moves downward by the same amount. Conversely, when the drive wheel 15 is raised, the auxiliary wheel 16 is also moved up by the same amount, and the vehicle height is changed by raising and lowering the vehicle body 11 in a parallel state. For this reason, the seedling planting posture by the seedling planting disk 9 is also maintained constant.

  2 is a perspective view of the seedling tray A and the tray guide 4, FIG. 3 is a side view of the internal mechanism portion of the tray guide 4, and FIG. 4 is a front view of the internal mechanism portion of the tray guide 4. .

  The seedling tray A is formed in a form in which a large number of seedling pots D are arranged in a certain number in the vertical and horizontal directions. The seedling tray A can be supplied with the seedling tray A as it is grown. The tray guide 4 has a configuration in which the bottom portion of the U-shape is positioned in the front lower portion in a configuration along the upper side of the handle frame 8 and the upper end portions of the supply port 4a and the delivery port 4b are positioned in the rear upper direction. It is set as the structure inclined.

  The tray guide 4 includes a guide plate 24 that receives and guides the bottom of the seedling tray A, a guide side plate 25 that guides the left and right edges of the seedling tray A, and a feed chain that is stretched around the guide side plate 25 and rotates. 26, etc., receiving the replenishment of the seedling tray A, and engaging and transferring the spacing portions of the pots D on the left and right sides of the seedling tray A by the lugs 27 arranged in the feed chain 26.

  The lower end portion of the guide plate 24 is curved toward the lateral sprocket shaft 28 of the feed chain 26, and a guide body 30 is disposed between the guide side plates 25 on the left and right sides on the outer periphery, so that the seedling tray as a whole. A can be guided to detour and transfer in a U shape in side view. The feed guide 29 formed at the center of the guide plate 24 fits the gap portion of the pot D at the bottom of the seedling tray A to guide the transfer in the feed direction.

  Such a tray guide 4 is supported by a guide rail 32 (FIG. 3) with respect to an attachment frame 31 integrally attached to the handle frame 8 so as to be reciprocally movable left and right over the lateral width of the seedling tray A. The tray guide 4 is configured such that the guide 33 is fitted to a lead cam 34 supported by the mounting frame 31, and the tray guide 4 can be reciprocated in the lateral direction by the rotation of the lead cam 34. The feed chain 26 is driven by the transmission rotation of the sprocket shaft 28 and is also rotated by a pair of left and right crank arms 36 via a link mechanism 35.

  The crank arm 36 moves in the lateral direction integrally with the tray guide 4 and is engaged with drive arms 38 that are integrated with the left and right sides of the shaft 37 of the lead cam 34 that rotates at a fixed position with respect to the mounting frame 31. It is driven intermittently. Accordingly, the seedling tray A is vertically transferred by one row of the seedling pot D at a position where the tray guide 4 is moved to the left lateral end and the right lateral end.

  A seedling E is pushed out from the seedling tray A into the tray guide 4 and is sandwiched between the tips of a pair of seedling planting discs 9 and 9 that rotate in the direction of arrow F (see FIG. 1). The discs 9 and 9 rotate toward the field and plant the seedling E sandwiched in the field scene to the field and release it.

  While the seedling E of the seedling tray A replenished from the seedling tray supply port 4a at the upper part of the tray guide 4 is transferred to the lower seedling planting disk 9, seedling planting is performed by the seedling planting disk 9 and seedling supply is performed. The subsequent empty tray B is sent out by being detoured in a U-turn form to a delivery port 4b formed on the front side or the rear side of the supply port 4a. The delivery port 4b is provided with a guide body 44 that supports and guides the delivery of the empty tray B from the rear end portion of the guide side plate 25 to the rear upper side, and the front end portion of the guide body 44 is used as the seedling replenishment marker 5.

It is set so that the seedling tray A can be replenished at the supply port 4a when the delivery end of the empty tray B reaches the delivery port 4b of the tray guide 4.
In addition, in a state where the delivery end of the empty tray B has reached the delivery outlet 4b of the tray guide 4, the transport tip of the seedling tray A next to the empty tray B is slightly from the seedling extraction position X of the seedling planting disc 9. It is set to be in front.

  Thus, when the seedling tray A is supplied to the supply port 4a of the tray guide 4 at the time of seedling planting work, the seedling tray A is transferred to the delivery port 4b side by detouring the U-turn portion by being transferred to the tray guide 4. In addition, the seedling planting operation by the seedling planting disk 9 is received, and the tray 4 is sent to the delivery port 4b as an empty tray B. In a state where the delivery end of the empty tray B has reached the delivery port 4b, since a new seedling tray A can be supplied to the supply port 4a, the operator can send the delivery end of the empty tray B to the delivery port 4b. It is possible to replenish the seedling tray A so as not to cause a stock loss in the planting operation by confirming that the seedling tray A has been reached or confirming the state in which the seedling tray A can be replenished at the supply port 4a. .

  In this way, it is possible to determine whether or not the seedling tray A can be replenished by monitoring the seedling tray A and the empty tray B on either the supply port 4a or the outlet 4b before and after the tray guide 4 in the U-turn form, Work operability can be facilitated. In particular, in a configuration in which the tray guide 4 is disposed at a relatively high position and is configured so as to block the operator's front-rear operation view, for example, the delivery port 4b can be seen even if the front supply port 4a is not visible. The replenishment work of the seedling tray A can be performed while looking only at the side state.

  In addition, if the feed outlet 4b of the tray guide 4 is provided with a seedling replenishment marker 5 or a seedling replenishment sensor (not shown) for displaying that the supply port 4a is ready to replenish the next seedling tray A. When the feeding end of the empty tray B reaches the position of the replenishment marker 5 or the like by providing the seedling replenishment marker 5 or the like at a position that is easy to see from the operator of the tray guide 4, for example, the position of the delivery port 4b, or a seedling replenishment sensor When the feeding end of the empty tray B is detected, the supply port 4a portion of the tray guide 4 has already been transported and supplied with the seedling tray A, so that a new seedling tray A is supplied to the supply port 4a. can do.

  For this reason, the operator can monitor the seedling replenishment marker 5 of the tray guide 4 or operate while monitoring the detection of the seedling replenishment sensor, and can easily replenish the seedling tray A.

  As shown in the side view of FIG. 5 (a) and the cross-sectional view taken along line AA of FIG. 5 (a) in FIG. 5 (b), the seedling planting disc 9 has a rubber portion on the outer periphery of the metal disk 9a. 9b is attached, and consists of a pair of disk plates as shown in FIG. 5 (b).

  Engine power is input to the center shaft 9 c of the seedling planting disk 9 through a power transmission mechanism in the planting transmission case 39. Further, the center shaft 9c of the seedling planting disk 9 is configured such that the inclination angle of the center shaft 9c can be changed by an adjusting operation tool (not shown) or the like by a joint portion 47 supported by the support frame 45. The support frame 45 is provided inside the planting transmission case 39.

  As shown in FIG. 5 (b), the holding range of the seedling E by the rubber portions 9b, 9b can be changed according to the inclination angle of the pair of seedling planting disks 9, 9 central axis 9c.

  Note that the delivery of the seedling E from the tray guide 4 to the pair of seedling planting disks 9 and 9 is performed by the pair of seedling planting disks 9 and 9 holding and transporting the leaves of the seedling E. At this time, the rubber portions 9b, 9b of the pair of seedling planting disks 9, 9 to which the seedling E is delivered from the tray guide 4 hold the delivered seedling E while maintaining contact with each other. The holding position of the seedling E between the pair of seedling planting discs 9 and 9 can be appropriately adjusted in accordance with the position where the pair of seedling planting discs 9 and 9 rotates to plant the seedling E sandwiched in the field. When planting the seedling E sandwiched between the pair of seedling planting discs 9 and 9 in the field, the pair of seedling planting discs 9 and 9 can perform an operation of separating the seedling E in a timely manner.

  The timing of holding and releasing the seedling E by the pair of seedling planting discs 9 and 9 can be adjusted by changing the inclination angle of the seedling planting disc 9 with an adjusting operation tool or the like, and the interval between the pair of seedling planting discs 9 and 9. Change and adjust.

  Further, since the seedlings in the seedling tray A are directly held by the pair of seedling planting discs 9 and 9 and planted as they are, the gripping position of the seedling E by the pair of seedling planting discs 9 and 9 becomes constant, so The planting depth of the seedling E is stabilized.

  Since the seedling planting disk 9 of this embodiment has a simple configuration in which the seedling harvesting device and the seedling planting device of the conventional seedling transplanting machine are integrated, seedling transplanting is advantageous in terms of its assembly, maintenance, manufacturing cost, etc. A machine is obtained.

  In addition, when the seedling planting disc 9 grips the seedling E transferred from the tray guide 4, a member (not shown) that pushes the seedling E from the tray guide 4 to the seedling planting disc 9 while gripping the seedling E in the seedling pot D is placed on the tray. It can be provided inside the guide 4. Thereby, taking out of the seedling from the seedling tray A can be promoted, and the accuracy of taking out the seedling is improved.

  Further, at the position X where the seedling planting disk 9 receives the seedling E from the tray guide 4, the rotation directions of the seedling planting disk 9 and the tray guide 4 are opposite to each other. Therefore, the seedling E can be smoothly taken out from the tray guide 4 to the seedling planting disk 9.

  Furthermore, the seedling transplanting machine of the present embodiment can be used as appropriate as a semi-automatic seedling transplanting mechanism. Here, the semi-automatic type is a mode in which an operator supplies seedlings for each planting so that an operator sitting on the seat 40 can easily supply seedlings to the pair of seedling planting disks 9 and 9. The position where the pair of seedling planting discs 9 and 9 receive the seedling E is adjusted in advance by changing the position to the seat 40 side (front side) (the Y position in FIG. 1). E is supplied one by one and planted sequentially in the field.

  A seedling stand 50 for semi-automatic work is detachably provided above the tray guide 4. Thereby, the space above the tray guide 4 can be effectively used as a space for placing seedlings. Moreover, since the seedling placing stand 50 is inclined forward and downward so that the seedlings are directed to the seat 40 side (front side) along the tray guide 4, an operator can easily perform seedling supply work.

  Therefore, it can be used as a semi-automatic seedling transplanter with a simple configuration by simply mounting the seat 40 and the seedling table 50, and it can be used semiautomatically when it cannot be transplanted fully automatically depending on the kind of seedling or the breeding form. And versatility is improved.

  The covering ring 43 is arranged at the rear part of the seedling planting disk 9 to cover the field after seedling planting. The plate attached to the side surface of the covering ring 43 has a central rotating shaft portion as shown in FIG. It is necessary to comprise two plates, an inner plate 48 to cover and an outer plate 49 having a diameter substantially corresponding to the outer diameter of the surrounding covering ring 43. The reason why the two plates 48 and 49 are overlapped is that there is a step at the side edge of the spoke portion of the cover ring 43 so that the leaf of the seedling does not interfere with the spoke portion of the cover ring 43, so that it matches the step. This is to make it happen.

  Therefore, in this embodiment, the two plates of the inner plate 48 and the outer plate 49 are cut out from a single plate to have a plate structure with a level difference without waste.

  6A is a cross-sectional view of the cover ring 43, and FIG. 6B is a plan view of the inner plate 48 and the outer plate 49 attached to the side surface of the cover ring 43. FIG.

  A circular portion corresponding to the inner diameter of the outer plate 49 is cut out to be the inner plate 48, or at this time, the circular portion to be the inner plate 48 is cut out with the protrusions 48a provided at intervals of 90 degrees. Thereafter, the projection 48a is rotated about 45 degrees around the center of the plate to shift the projection 48a from the cutout portion of the outer plate 49, and the contact portion between the projection 48a and the outer plate 49 is welded. In this way, two plates 48 and 49 having a step can be obtained from one plate.

  INDUSTRIAL APPLICABILITY The present invention has a high possibility of being used as a farming machine for transplanting seedlings that releases workers from heavy labor.

It is a schematic side view of the seedling transplanter of the present invention. It is a perspective view of the tray guide part of the seedling transplanter of FIG. It is a side view of the internal mechanism of the tray guide part of the seedling transplanter of FIG. It is a front view of the internal mechanism of the tray guide part of the seedling transplanter of FIG. They are a side view (Drawing 5 (a)) of a seedling transplanting disk of a seedling transplanting machine of Drawing 1, and an AA line sectional view (Drawing 5 (b)) of Drawing 5 (a). It is sectional drawing (FIG.6 (a)) of the cover ring of the seedling transplanter of FIG. 1, and the top view (FIG.6 (b)) of the inner side plate attached to the side surface of the cover ring of FIG. .

4 tray guide 4a supply port 4b delivery port 5 seedling replenishment marker 8 handle frame 9 seedling planting disk 9a disk 9b rubber portion 9c central shaft 10 auxiliary seedling stage 11 vehicle body 12 engine
13 Steering handle 14 Wheel case
15 Driving wheel 16 Auxiliary wheel
17 Axle housing 18 Lift cylinder
DESCRIPTION OF SYMBOLS 19 Ground sensor 20 Arm 21 Link rod 22 Link 23 Front wheel arm 24 Guide plate 25 Guide side plate 26 Feed chain 27 Lug 28 Lateral sprocket shaft 29 Feed guide 30 Guide body 31 Mounting frame 32 Guide rail 33 Guide 34 Lead cam 35 Link mechanism 36 Crank arm 37 Shaft 38 Drive arm 39 Planting transmission case 40 Seat 43 Covering ring 44 Guide body 45 Support frame 47 Joint part
48 Inner plate 49 Outer plate 50 Seedling stand A Seedling tray B Empty tray
C Ｄ D Nursery pot
E seedling

Claims (5)

A tray guide (4) for transferring the seedling tray (A) supplied from the upper seedling tray supply port (4a) to the lower side is provided,
A pair of seedling planting disks (9) for taking out the seedling (E) of the seedling tray (A) at the lower part of the tray guide (4) and rotating it to plant in the field,
A covering ring (43) is provided on the rear side of the seedling planting disc (9),
The rotation direction of the seedling planting disc (9) and the transfer direction of the tray guide (4) are set in opposite directions ,
An adjustment operation tool that can adjust the timing of holding and releasing the seedling (E) by the pair of seedling planting disks (9) is provided,
A seedling transplanter configured to allow an operator sitting on the seat (40) to supply the seedling (E) to a position where the pair of seedling planting disks (9) sandwich the seedling (E) . The seedling transplanter according to claim 1, wherein a seedling placing stand (50) is provided above the tray guide (4) so as to be inclined so that the seedling faces the seat (40) side along the tray guide (4) . When taking out the seedlings (E) of the seedling tray (A), claim provided inside seedlings members pushing the (E) from the tray guide (4) to the seedling planting disc (9), the tray guide (4) 1 seedling transplanting machine according to. On the side surface of the cover ring (43), an inner plate (48) that covers the central rotating shaft portion and an outer plate (49) having a diameter substantially equivalent to the outer diameter of the cover ring (43) around the center plate are provided.
Protruding portions (48a) are provided on the circumferential portion of the inner plate (48) created by cutting out the portion corresponding to the inner diameter of the outer plate (49),
Welding the protrusion (48a) and the outer plate (49);
A steering handle (13) is provided at the rear end of the vehicle body (11),
Drive wheels (15) that can change the vehicle height by vertically swinging the wheel case (14) by expanding and contracting the lift cylinder (18) are provided on both the left and right sides,
Ground sensor (19) by ridges (C) seedling transplantation machine mounting serial to claim 1 NaeUe depth by changing the vehicle height based on the detection of height is configured to control such that a constant. A tray guide (4) for transferring the seedling tray (A) supplied from the upper seedling tray supply port (4a) to the lower side is provided,
A pair of seedling planting disks (9) for taking out the seedling (E) of the seedling tray (A) at the lower part of the tray guide (4) and rotating it to plant in the field,
A covering ring (43) is provided on the rear side of the seedling planting disc (9),
The rotation direction of the seedling planting disc (9) and the transfer direction of the tray guide (4) are set in opposite directions,
On the side surface of the cover ring (43), an inner plate (48) that covers the central rotating shaft portion and an outer plate (49) having a diameter substantially equivalent to the outer diameter of the cover ring (43) around the center plate are provided.
Protruding portions (48a) are provided on the circumferential portion of the inner plate (48) created by cutting out the portion corresponding to the inner diameter of the outer plate (49),
A seedling transplanter in which the protrusion (48a) and the outer plate (49) are welded.

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