JPH104732A - Seedling transplanter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the holding performance of a carrier to a table when taking out a carrier of a spare seedling storage section at a table and replenishing seedlings in the carrier to a seedling mounting table. SOLUTION: A table 33 is inserted into a position below a carrier stored in a spare seedling storage part, and the carrier is pressed against a contact part 33A formed on the table 33 by operation of a claw body 40, and in this state, the carrier is pressed. Is placed horizontally on the table 33, and the automatic supply operation is set such that the table 33 is tilted and the seedlings in the carrier are sent to the seedling mounting table 7 of the seedling planting apparatus A, Claw body 40
Pressing member 4 that changes to a posture in which the upper surface of the carrier is pressed toward table 33 by the moving force of the carrier due to the operation of.
3 was provided on the table 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mat-like plant having a plurality of planting portions for planting seedlings from mat-like plants placed on a seedling mounting table in a field, and being housed in a carrier. An automatic seedling supply device that has a spare seedling storage section for storing a plurality of seedlings, takes out the mat-shaped seedlings stored in the spare seedling storage section in a carrier state, and sends only the mat-shaped seedlings to the seedling mounting table. The present invention relates to improvement of a seedling transplanter provided.

[0002]

2. Description of the Related Art Conventionally, there is a seedling transplanter constructed as described above, as disclosed in Japanese Patent Application Laid-Open No. 7-241115. A table (receiving plate) is positioned behind the carrier to be taken out of the carriers stored in the spare seedling storage unit, and the table is advanced to insert the table slightly below the carrier;
After the carrier is placed on the table by lifting the table, the table is moved backward to take out the carrier, and further, the table is tilted to the lower position so that the mat-shaped seedlings in the carrier are seedlings of the seedling planting apparatus. It is configured to be sent to the mounting table.

[0003]

As in the conventional example, the conventional method is such that the mat-shaped seedlings in the carrier are taken out with the carrier placed on the table and changed to an inclined posture, and are sent to the seedling mounting table. When the carrier is taken out, the carrier is taken out only by the frictional force between the upper surface of the table and the lower surface of the carrier, and when switching to the inclined posture, the posture of the carrier is determined by the contact with the contact portion formed on the table. Become.

However, when the carrier is taken out while being placed on the table by frictional force, it is difficult to take out the carrier at high speed due to the static inertia of the carrier. In the case of determining the position of the carrier relative to the table by contact, the attitude of the table is disturbed when switching to the inclined attitude due to the inclination of the body, vibration from the engine, etc., and the smooth feeding of the seedlings to the seedling mounting table is hindered. It is also conceivable.

For the purpose of solving this inconvenience, it is conceivable to provide a chucking member on the table side for regulating the position of the carrier in the horizontal direction. However, even in the case where the chucking member is provided in this manner, the vertical displacement of the carrier with respect to the table cannot be restricted, and an appropriate solution is desired.

It is an object of the present invention to rationally construct a seedling transplanter which can maintain a proper position of a carrier with respect to a table to enable smooth supply of seedlings.

[0007]

According to a first feature of the present invention, as described at the outset, a plurality of seedlings planted from a mat-shaped seedling placed on a seedling mounting stand in a field. Equipped with a spare planting storage section for storing a plurality of mat-shaped seedlings stored in a carrier with a planting section for strips, and taking out the mat-shaped seedlings stored in this spare seedling storing section in a state of being stored in the carrier In a seedling transplanter equipped with an automatic seedling supply device for feeding only mat-type seedlings to a seedling mounting table, the automatic seedling supply device is inserted into a position below a carrier to be taken out stored in the spare seedling storage portion. After the operation, a table is provided which performs an operation of taking out the carrier in the horizontal direction in a mounted state, and the carrier is horizontally moved toward the contact portion formed on the table at the time of taking out operation. Chuckin that operates to sandwich And the member, there by moving force of the carrier by sandwiching operation of the chucking member that it includes a pressing member that changes posture hold down the side of the table top surface of the carrier, its action is as follows.

[0008] A second feature of the present invention (claim 2) is that the spare seedling storage section is provided with a plurality of carrier storage spaces arranged in a shelf shape, and the automatic seedling supply device is provided with After taking out the table from the side of the planting portion and inserting it into the position below the carrier to be taken out and performing the sandwiching operation of the chucking member, taking out the table to the side of the planting portion and tilting the carrier together with the table. Then, the mat-shaped seedlings stored in the carrier are sent to the seedling mounting table in the planting area.
Thereafter, a control operation is set so as to return the empty carrier to the original carrier storage space by operating the table toward the original carrier storage space, and the clamping direction of the chucking member is set with respect to the carrier storage space. The direction in which the table is inserted is set in a direction opposite to the direction in which the table is inserted. When the chucking member is operated in the chucking release direction, the carrier comes into contact with the carrier and the planting portion is disposed. There is a contact member that moves to the side opposite to the side, and the operation is as follows.

A third feature of the present invention (claim 3) is that the spare seedling storage section is formed with a plurality of carrier storage spaces for storing carriers in a shelf shape, and the carrier storage space is provided with respect to the carrier storage space. A pair of rail-shaped support members having a support bottom surface and a guide side surface to allow movement to the planting portion side and restrict lateral movement, and a pair of guide side surfaces of the support member are provided. Is formed so that the distance between the guide side surfaces becomes larger toward the upper side, and the operation thereof is as follows.

According to the first feature, when the carrier is taken out from the spare seedling storage section, the table is inserted below the carrier to be taken out, and the chucking member is sandwiched and actuated. The pressing member changes its posture to press the upper surface of the carrier by the moving force of the carrier in the horizontal direction due to the operation,
The holding of the carrier in the horizontal direction on the table is prevented by the sandwiching of the chucking member and the contact portion, and the lifting of the carrier with respect to the table is prevented by the pressing force of the pressing member. Even if vibration is transmitted from the outside, the position of the carrier with respect to the table can be held with high accuracy.

According to the second feature, when the carrier is taken out together with the table, since the chucking member sandwiches the carrier in a direction opposite to the direction in which the static inertia force of the carrier acts, the table is taken out at high speed. Even when the carrier is moved in the direction, the carrier is prevented from moving due to static inertia.

According to the third feature, when the carrier is stored in the carrier storage space of the spare seedling storage section, the carrier is lowered from a position slightly higher than the height of the support member in the storage space. After the carrier comes into contact with the guide side surface of the support member and is guided inward, the carrier comes into contact with and is supported by the support bottom surface of the support member. It is sent with high precision to the storage position where

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a drive-type front wheel 1 capable of steering operation and a drive-type rear wheel 2
The engine 4 is mounted on the front part of the traveling body 3 equipped with a transmission case 5 and the transmission case 5 to which the power from the engine 4 is transmitted is disposed at the center part. A seedling planting device A as an attachment portion is connected, and a spare seedling storage portion B is arranged on the central upper surface of the traveling machine body 3, an automatic seedling supply device C at a rear portion thereof, and a supply / discharge device at a front portion thereof. D is arranged to constitute a rice transplanter as a seedling transplanter capable of automatic control or wireless control.

The seedling planting apparatus A includes a seedling mounting table 7 on which the mat-shaped seedlings W are placed, and rotates by a power transmitted from a transmission case 8 to which power from the traveling machine body 3 is transmitted via a chain case 9. The rotary case 10 is provided with a pair of planting arms 11 and 11 as a planting mechanism, and a plurality of leveling floats 12, each of which is configured for six-row planting.

In this rice transplanter, as shown in FIG. 3, a mat-shaped seedling W is placed in a carrier E having a structure in which a plate-shaped inner frame 14 is fitted in a tray-shaped outer frame 13 as shown in FIG. An opening 13A is formed in the bottom surface of the outer frame 13, and a plurality of protrusions in a posture along the moving direction of the seedling W are formed on the upper surface of the inner frame 14 to promote the sliding of the seedling W. Article 14A is formed. Also, the seedling automatic supply device C tilts the seedling-containing carrier E taken out of the spare seedling storage section B,
The seedlings W are configured to be supplied by being slid into the seedling mounting table 7 by their own weight.

As shown in FIGS. 2, 4, and 10, the spare seedling storage section B includes a pair of front and rear lower frames 15 in a horizontal position and a pair of front and rear top frames 16 in a horizontal position.
And a plurality of rail-shaped support members 18 for supporting the carrier E with respect to each of the vertical frames 17, and a stopper 19A is provided at an end of the support member 18. By providing the formed rod material 19, the seedling storage space for storing the seedlings W in a state where the seedlings W are stored in the carrier E in a plurality of rows with a plurality of shelves at intervals in which the seedlings are close to each other in the vertical direction. It is provided with.
As shown in FIG. 2, the support member 18 includes a support bottom surface 18A that contacts the bottom surface of the carrier E, and a guide side surface 18B that contacts the side surface of the carrier E. By setting the distance between them so as to be wider toward the upper side, when the carrier E is stored in this storage space, the carrier 18 is lowered from a position slightly above the support member 18 so that the guide side surfaces 18B,
18B guides the carrier E inward, and both guide side surfaces 18
By supporting the carrier E in a state of being sandwiched between B and 18B, the accuracy of the storage position of the carrier E is maintained at a high level.

A contact-type first sensor S1 for detecting the presence of the carrier E is provided on the upper surface of the support
7 is provided with a proximity sensor S2 for determining the presence or absence of a seedling W. The stopper 19A at the tip of the rod member 19 contacts the carrier E to set the position of the carrier E. The first sensor S1 is connected to the contact member 20 pressed on the bottom surface of the carrier E and the limiter. Link with switch 21,
The contact member 20 is projected and urged, and the proximity sensor S2
A type that can determine the presence or absence of a seedling W in a non-contact state, such as a capacitance type, is used.

The automatic seedling feeding device C is vertically movable along a pair of left and right movable frames 23 provided so as to be movable in the left and right directions along the lateral rails 22 on the rear surfaces of the top frame 16 and the lower frame 15 on the rear side. Seedling removal mechanism C
a, and meshes with a rack gear 24 provided along the rear top frame 16, and
The pinion 25 supported on the third side is driven by the first electric motor M <b> 1 to move the seedling extracting mechanism Ca in the left-right direction, and a screw arranged along a pair of left and right vertical rails 26 formed on the moving frame 23. Nut 28 screwed to shaft 27
Is supported on the side of the seedling takeout mechanism Ca, and an actuation system is provided that moves the seedling takeout mechanism Ca in the vertical direction by driving the second electric motor M2 that rotationally drives the screw shaft 27.

As shown in FIGS. 5, 6, and 10 to 12, the seedling removal mechanism Ca includes a pair of left and right vertical rails 26.
A slide member 31 that can move in the front-rear direction while maintaining a horizontal posture is further moved through an intermediate member 30 that can move in the front-rear direction while maintaining a horizontal posture with respect to the shift base 29 having the nut 28 and that can move up and down along. A table 33 is provided that is movable in the front-rear direction via an intermediate frame 32 that is swingably supported around an axis P that is lateral to the slide member 31.

A rack gear 36 is provided on the intermediate member 30, and a pinion gear 37 meshing with the rack gear 36 is provided on the shift base 29, and timing pulleys 38, 38 are supported at front and rear positions of the intermediate member 30. , 38, the lower part of the timing belt 39 is fixed to the shift base 29 via the fixing part 29A, and the upper part of the timing belt 39 is fixed to the slide member 31 via the fixing part 31A. A third electric motor M3 for moving in and out, which is fixed and drives the pinion gear 37, is provided on the side of the shift base. With this configuration, when the third electric motor M3 is driven, the position of the timing pulleys 38, 38 is determined together with the operation of the intermediate member 30. And the timing belt 39 operates twice as much as the operation amount of the intermediate member 30. Is configured to the intermediate member 30 by an amount equal to the intermediate member 30 may protrude to the table 33 forward in the case of projecting operating the 33 forward.

As shown in FIGS. 7 (a), 7 (b), 8 and 9, the front end of the table 33 is a chucking member which is detachable from the outer frame 13 of the carrier E. A pair of claw bodies 40, 40 are provided so as to be able to move back and forth by swinging around a lateral support shaft 41, and the rear end of the outer frame 13 of the carrier E is provided at the rear end.
And a lifting member 42 that is inserted into the hole 13A of the carrier E and contacts the inner frame 14, and a rear contact portion 33A that is positioned integrally with the rear end of the carrier E for positioning. There is a pressing member 43 on the left and right ends of the contact portion 33A, which oscillates by the moving force of the carrier E when the carrier E is sandwiched by the claw body 40 and presses the upper surface of the carrier E toward the table 33 sideways. Are swingable around the support shaft 44 so as to be retractable and urged by a spring 45 in the retracting direction.

Further, a first cylinder C for tilting the intermediate frame 32 around a horizontal axis P with respect to the slide member 31.
1. A second cylinder C2 for operating the claw body 40 provided at the front end of the take-out table 33, and a third cylinder C3 for sliding the table 33 with respect to the intermediate frame 32. Note that these cylinders are configured as air cylinders, and are provided with sensors (not shown) such as a rotary encoder for detecting the position of the seedling extracting mechanism Ca in the left-right direction and the vertical direction. (Not shown) such as a rotary encoder for measuring
It has.

The feeding / discharging device D temporarily holds the seedling-containing carrier E when sending the seedling-containing carrier E from the seedling replenishing device (not shown) installed in the ridge to the spare seedling storing portion B,
Further, when returning the empty carrier E from the spare seedling storage unit B to the seedling supply device, the empty carrier E has a function of temporarily holding the empty carrier E from the spare seedling storage unit B, as shown in FIG.
At the upper position of the frame body 46 constituting the supply / discharge device D, there is provided a carry-in conveyor 47 driven by an electric motor (not shown) for feeding the carrier E with seedlings into the spare seedling storage section B,
At the lower position, there is provided an unloading conveyor 48 driven by an electric motor (not shown) to send out the empty carrier E from the spare seedling storage section B, and the frame 46 swings around the lower longitudinal axis Q. It is freely supported by the traveling body 3. Further, a connecting member 51 is provided at a front position of the supply / discharge device D so as to be swingable about a horizontal axis R with respect to a swing frame 49 swingable about the same axis as the vertical axis Q. ing.

The connecting member 51 is formed in a tubular shape so that a connecting member at the tip of a conveyor device extending from a seedling replenishing device (not shown) installed on the ridge is fitted into the connecting member 51, and is fitted and connected to the connecting member. This has the function of maintaining the relative positional relationship with the tip of the conveyor device, and the lateral direction of the swing frame 49 even if the relative positional relationship between the seedling replenishing device (not shown) and the traveling machine body 3 is not appropriate. The connection between the connecting member 51 and the connecting body can be performed by swinging in the vertical direction and swinging in the vertical direction.

In this rice transplanter, the electric motor and a solenoid valve (not shown) are used based on signals from the sensors.
A control device (not shown) having a microprocessor for controlling the cylinder via the controller is provided, and a control operation for supplying the mat-shaped seedling W from the spare seedling storage section B to the seedling mounting table 7 will be described below. I do.

That is, a seedling remaining amount sensor (not shown) for judging the presence or absence of a seedling in contact with a mat-shaped seedling is provided on the seedling placing surface of the seedling placing stand 7. When it is determined that the number of seedlings has decreased, the strip is set as the supply target strip, and the operation of taking out the seedling-containing carrier E from the spare seedling storage section B is performed. In this removal operation, the presence or absence of a seedling W in a predetermined row of the storage space of the spare seedling storage section B is determined based on a signal from the second sensor S2. E is set as an object to be taken out, the take-out level is determined, and the take-out table 33 is moved to the position of the set row by driving the first electric motor M1;
The take-out table 33 is moved by the drive of the electric motor M2 to a level at which the carrier E to be taken out can be placed, and
As shown in FIG. 11, the take-out table 33 is inserted below the carrier E to be taken out by driving the motor M3, and the carrier 33 is mounted on the upper surface of the table 33 by slightly lifting the table 33 by driving the second electric motor M2. After the mounting, the claw body 40 is protruded by driving the second cylinder C2 to complete the holding of the carrier E, and thereafter, the third electric motor M3 is driven in the reverse direction to finish taking out the carrier E. I do.

7 (a) and 7 (b), the carrier E moves rearward on the table 33 by the pressing force from the claw body 40, as shown in FIGS. At the same time when the pressing member 43 comes into contact with the contact portion 33A, the pressing member 43 is switched to a position in which the pressing member 43 presses the end of the carrier E on the side of the table 33 toward the table 33 by this moving force.

Next, by driving the first electric motor M1 and the second electric motor M2, the table 33 is moved laterally to the position of the supply target strip, and at the same time, the table 33 is lowered. While the take-out table 33 is moved in the horizontal direction in synchronization with the lateral movement of the seedling mounting table 7 by the drive of the first cylinder C1, the operation of the first cylinder C1 causes the table 3 to move.
3 and the third cylinder C3 is reciprocated within a short period of time, so that the lifting member 4 inserted into the opening 13A of the outer frame 13 of the carrier E as shown in FIG.
2 raises the rear end of the inner frame 14 of the carrier E to the upper edge of the outer frame 13, and the table 33 vibrates in a direction along the inclined surface (mounting surface). The mat-shaped seedlings W are sent out along with and are fed into the seedling mounting table 7 while sliding. The maintenance of the inclined state of the carrier E and the vibration operation by the reciprocating drive of the third cylinder C3 are continued until the remaining seedling sensor of the supply target strip detects the seedling W.

In the control device, as described above, the second sensor S
2, the control operation is set to take out the carrier E in which the seedling W exists, but the carrier E in which the seedling W does not exist due to the erroneous detection of the second sensor S2.
(Empty carrier) may be taken out. Even if the empty carrier E is taken out by mistake, the second mechanism that raises and lowers the taking out mechanism Ca with the carrier E placed on the table 33 in order to determine this. When driving the electric motor M2,
The current value supplied to the second electric motor M2 is measured,
When the measured value is lower than the preset current value (when the load is low), it is determined that the seedling W does not exist because the weight is light, and the carrier E is returned to the original storage space. The control operation is set so as to perform control to take out a different carrier E.

Next, after the supply of the seedlings is completed, the reciprocating drive of the third cylinder C3 is stopped, and the table 33 is returned to the horizontal posture by the operation of the first cylinder C1, and then the control reverse to the above-described control operation is performed. By performing the operation, the operation of returning the empty carrier E to the original storage portion of the spare seedling storage portion B is performed. Although the carrier E is returned to the original storage position of the spare seedling storage section B in this way, the table 33 is lowered slightly to support the support member 18.
When supporting the guide surfaces 18B, 18B as described above,
B guides the carrier E inward, and the two guide side surfaces 18B, 1
By supporting the carrier E in a state of being sandwiched between 8B, the accuracy of the storage position of the carrier E is maintained at a high level. Further, when returning the carrier E, an operation of returning the claw body 40 to the unlocked position is also performed.
As shown in (b), a spring or rubber contact member 52 is provided which comes into contact with the flange portion Ea of the carrier E at the time of the returning operation. At B, the carrier E is sent to the stopper 19A side of the rod member 19.

Incidentally, the spare seedling storage unit B
When the remaining amount of the seedlings W is reduced and the carrier E containing seedlings is supplied to the spare seedling storage section B, the traveling machine 3 is moved to a position near a seedling supply device (not shown) installed on the ridge. After stopping the vehicle and connecting the connected member (not shown) to the connecting member 51 of the supply / discharge device D by extending the conveyor device (not shown) of the seedling replenishing device, similar to the above-described removal of the carrier E, The empty carrier E is taken out from the take-out table 33 by the take-out table 33, and the empty carrier E is carried out to the side of the conveyor device of the seedling replenishing device while being placed on the carrying-out conveyor 48 of the supply / discharge device D, and the conveyor device of the seedling replenishing device is also taken out The carrier E with seedlings is received by the carry-in conveyor 47, and the carrier E with seedlings is received by the table 33 and the spare seedling storage section B
The control operation to send the data to is performed.

As described above, in this rice transplanter, when the remaining amount of seedlings on the seedling placing stand 7 decreases, the mat-shaped seedlings W in the spare seedling storage section B are automatically transferred to any of the strips of the placing stand 7. Supply device C
Can be automatically supplied, even if the traveling machine body 3 is inclined at the time of replenishing seedlings, even if vibrations from the machine body are transmitted, the claw body 40 and the contact portion 33A are caught, In addition, by holding down the holding member 43, the position of the seedling-containing carrier E with respect to the table 33 is maintained without being changed, thereby enabling highly accurate replenishment.
When the empty carrier E is returned to the spare seedling storage unit, it can be returned with high accuracy. Further, the accuracy of the storage position of the carrier E with respect to the spare seedling storage portion B in the lateral direction is increased by the restricting action of the support member 18, so that the table 33 and the carrier E at the time of taking out the carrier E from the table 33 can be used. The relative position accuracy is improved, and the seedling replenishment can be performed with high accuracy.

[Other Embodiments] The present invention can be applied to, for example, a seedling transplanter having a structure in which an operator rides and steers, in addition to the above embodiment.

[0034]

Accordingly, a seedling transplanter which can prevent the displacement of the carrier with respect to the table in the horizontal and vertical directions and hold the carrier at an appropriate position to enable a smooth seedling replenishment is rationally constituted. (Claim 1). Further, the table can be operated at a high speed at the time of taking out the carrier, so that a highly efficient work can be performed (claim 2). The accuracy of the position is improved, and the supply accuracy of the seedlings to the seedling mounting table is also improved (claim 3).

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a rear view of a spare seedling storage unit.

FIG. 3 is an exploded perspective view of the carrier.

FIG. 4 is a plan view of a carrier storage location in a spare seedling storage section.

FIG. 5 is a side view of a seedling removal mechanism.

FIG. 6 is an exploded perspective view of a seedling removal mechanism.

FIG. 7A is a side view showing a claw body and a holding member in a non-chucking posture, and FIG. 7B is a side view showing a claw body and a holding member in a chucking posture.

FIG. 8 is a plan view of a seedling removal mechanism with a carrier placed thereon.

FIG. 9 is a cross-sectional view showing a support structure of the holding member.

FIG. 10 is a side view of a spare seedling storage unit and an automatic seedling supply device.

FIG. 11 is a side view of the spare seedling storage unit and the automatic seedling supply device in a state where the carrier is removed.

FIG. 12 is a side view of an automatic seedling supply device when supplying seedlings to a seedling mounting table.

[Explanation of symbols]

 7 Seedling stand 18 Support member 18A Support bottom surface 18B Guide side surface 33 Table 40 Chucking member 43 Holding member 52 Contact member A Planting part B Spare seedling storage part C Automatic seedling feeding device E Carrier W Mat-shaped seedling

Claims (3)

[Claims] 1. A multi-row planting part for planting seedlings from mat-shaped seedlings placed on a seedling mounting stand in a field, and storing a plurality of mat-shaped seedlings in a carrier. A seedling transplanter equipped with a spare seedling storage unit and an automatic seedling supply device that takes out the mat-shaped seedlings stored in the spare seedling storage unit while keeping them in the carrier and sends only the matted seedlings to the seedling mounting table. After the operation of inserting the seedling automatic supply device into a position below the carrier to be taken out stored in the spare seedling storage section,
The table includes a table that performs an operation of taking out the carrier in a horizontal direction with the carrier placed, and an operation of sandwiching the carrier in a horizontal direction toward a contact portion formed on the table at the time of taking out operation is performed on the table. A seedling transplanter comprising: a chucking member for performing the operation; and a pressing member that changes to a posture in which the upper surface of the carrier is pressed toward the table side by the moving force of the carrier due to the sandwiching operation of the chucking member. 2. The spare seedling storage unit is provided with a plurality of carrier storage spaces arranged in a shelf, and the automatic seedling supply device is configured to remove the table from the planting unit side. After inserting the chucking member into the lower position of the carrier and performing the sandwiching operation of the chucking member, the table is taken out to the side of the planting portion, and the carrier is tilted together with the table, and a mat-shaped seedling stored in the carrier is planted. Then, the table is operated toward the original carrier storage space, and a control operation is set to return the empty carrier to the original carrier storage space. The sandwiching direction is set in a direction opposite to the direction in which the table is inserted into the carrier accommodating space, and the chucking member is moved in the chuck releasing direction of the chucking member. The seedling transplanter according to claim 1, further comprising a contact member that contacts the carrier during operation and moves the carrier to a side opposite to a side where the planting portion is disposed. 3. The spare seedling storage section forms a plurality of carrier storage spaces for storing a carrier in a shelf shape, and allows the carrier to move toward the planting section side with respect to the carrier storage space, and A pair of rail-shaped support members having a support bottom surface and a guide side surface so as to restrict the movement in the lateral direction are provided, and the guide between the pair of guide side surfaces of the support member becomes wider toward the upper side. The seedling transplanter according to claim 1 or 2, wherein the side surface is formed.