JP2020000162A - Rice planting machine - Google Patents

Abstract

To improve the working performance of supply of seedlings to a seedling platform in a rice planting machine.SOLUTION: A rice planting machine is provided with a seedling platform 10 which is reciprocated, traversed and driven along left and right directions. The rice planting machine includes: a seedling planting device 5 supported to lifting/lowering mechanisms 3, 4; and a preliminary seedling platform 21 arranged in the rearward portion of the machine body 11. There are included movement support mechanisms 25, 29 for supporting the preliminary seedling platform 21 to the machine body 11 in the left and right directions in a freely reciprocating/moving manner. There is included an interlocking member 31 which connects the preliminary seedling platform 21 with the seedling platform 10 to transmit the lateral movement of the seedling platform 10 to the preliminary seedling platform 21, laterally moves the preliminary seedling platform 21 along with the seedling platform 10, and guides the seedlings of the preliminary seedling platform 21 from the preliminary seedling platform 21 to the upper part of the seedling platform 10.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a configuration for supplying seedlings to a seedling rest of a seedling planting device in a rice transplanter.

In a rice transplanter, as disclosed in Patent Literature 1, a spare seedling rest is supported on the rear part of the fuselage, and the spare seedling rest is arranged along the upper part of the seedling rest of the seedling planting device. is there.
In Patent Literature 1, seedlings are placed in advance on a reserve seedling rest, and when the number of seedlings on the seedling rest of the seedling planting device decreases with the progress of the planting operation, the planting operation is temporarily stopped. Yes, the seedling rest is stopped so that the upper part of the seedling rest is aligned with the horizontal position of the spare seedling rest.
Thus, by pushing the seedlings of the spare seedling rest back, the seedlings can be moved from the spare seedling rest to the upper part of the seedling rest, and the seedling rest can be supplied to the seedling rest.

JP 2012-244911 A

In Patent Literature 1, with respect to a seedling nest that is driven to reciprocate in the seedling planting apparatus, the spare seedling nest is fixed to the machine body.
Therefore, when moving the seedlings on the spare seedling rest to the upper part of the seedling rest, it is necessary to temporarily suspend the planting work, so that the upper part of the seedling rest is aligned with the horizontal position of the spare seedling rest. Therefore, since it is necessary to stop the seedling rest, there is room for improvement in the workability of supplying the seedling rest to the seedling rest.

  An object of the present invention is to improve the workability of replenishing seedlings to a seedling rest in a rice transplanter.

The rice transplanter of the present invention
A lifting mechanism extending rearward from the rear of the aircraft,
A seedling rest is provided which is driven reciprocatingly and laterally along the left-right direction, and a seedling planting device supported by the elevating mechanism,
And a stand for a spare seedling provided at the rear of the aircraft,
A movement support mechanism that supports the spare seedling rest on the body so as to be reciprocally movable in the left-right direction,
Connecting the spare seedling rest and the seedling rest, transmitting the lateral movement of the seedling rest to the spare seedling rest, and moving the spare seedling rest together with the seedling rest, Further, there is provided an interlocking member for guiding the seedlings of the spare seedling rest from the spare seedling rest to the upper part of the seedling rest.

According to the present invention, the spare seedling rest is supported by the body so as to be able to reciprocate in the left-right direction, and the spare seedling rest and the seedling rest are connected by an interlocking member. With this, the stand for the spare seedlings reciprocates in the left-right direction together with the stand for the seedlings.
In this way, during the planting operation (in a state where the seedling rest is being driven in a reciprocating traverse direction), the seedling rest and the seedling rest can be moved from the spare seedling rest to the seedling rest. It is possible to maintain a proper positional relationship.

  Therefore, during the planting operation (in a state where the seedling rest is being driven in the reciprocating transverse movement), the seedlings of the spare seedling rest can be moved from the interlocking member to the upper part of the seedling rest. The supply of the seedlings to the seedling rest can be easily performed while the interruption of the seedlings is reduced, and the workability of supplying the seedlings to the seedling rest can be improved.

In the present invention,
It is preferable that the interlocking member is supported so as to be vertically swingable on the spare seedling rest so that the raising and lowering of the seedling planting device by the elevating mechanism is allowed to the spare seedling rest. is there.

In rice transplanters, the seedling planting apparatus is often supported on the body so as to be able to move up and down via an elevating mechanism.
According to the present invention, even when the seedling placement device is moved up and down while the spare seedling rest and the seedling rest are connected by the interlocking member, the interlocking member swings up and down with respect to the spare seedling rest. By doing so, the raising and lowering of the seedling planting apparatus is permitted, so that the raising and lowering operation of the seedling planting apparatus can be performed without difficulty, without being restricted by the stand for the spare seedling and the interlocking member.

In the present invention,
The supporting posture for supporting the seedlings, and the replenishment posture for moving the seedlings of the spare seedling rest from the interlocking member to the seedling rest in a state of being lowered backward with respect to the supporting posture, the posture of the spare seedling rest. It is preferable that a posture changing mechanism for supporting the change is provided.

  According to the present invention, when the seedlings of the spare seedling rest are moved from the interlocking member to the seedling rest, the spare seedling rest is changed to a replenishment posture in a rearward descending state, thereby utilizing the self-weight of the seedlings. The seedlings can be moved from the interlocking member to the upper part of the seedlings without difficulty.

In the present invention,
The moving support mechanism,
A support rail supported by the aircraft along a left-right direction,
A support roller is provided on the stand for the reserve seedling, and supports the reserve for seedling movably along the support rail by rolling along the support rail,
The posture changing mechanism,
The support roller slides along the periphery of the support rail around the axis of the support rail in the left-right direction without rolling along the support rail, thereby holding the preliminary seedling rest in the support posture. It is preferable that the posture is changed to the above-mentioned replenishment posture.

According to the present invention, when the support rail supported by the fuselage and the support roller supporting the preliminary seedling rest are provided in the movable support mechanism, the support roller of the movable support mechanism is also used as a part of the posture changing mechanism. Will be.
As a result, the movement supporting mechanism and the posture changing mechanism can be used for the same purpose, which is advantageous in terms of simplification of the structure.

In the present invention,
An upper seedling sensor that is provided on an upper part of the seedling rest and detects the presence or absence of a seedling,
It is preferable that a lower seedling sensor provided at a lower portion of the seedling mounting table to detect the presence or absence of a seedling is provided.

  According to the present invention, for example, when both the upper seedling sensor and the lower seedling sensor detect a seedling in a seedling rest, it can be determined that a sufficient amount of seedlings are placed on the seedling rest. If the upper seedling sensor no longer detects the seedlings as the planting operation progresses, it can be determined that the seedlings on the seedling rest have been consumed a little, so the operator can prepare for placing the seedlings on the spare seedling rest. Should be performed.

  Next, when the lower seedling sensor no longer detects the seedlings as the planting operation progresses, the seedlings on the seedling rest are consumed and it can be determined that the seedling rest should be replenished with seedlings. What is necessary is just to move the seedling of the seedling rest from the interlocking member to the seedling rest.

  ADVANTAGE OF THE INVENTION According to this invention, before it is in the state which needs to supply a seedling to a seedling rest, it is possible to appropriately recognize the time to prepare for placing a seedling on the spare seedling rest, etc. Since the seedlings can be properly carried out, when the seedlings are to be replenished with the seedlings, the seedlings of the spare seedlings can be easily moved to the upper part of the seedlings.

It is a left view of a rice transplanter. It is a top view of a rice transplanter. It is a left side view of the vicinity of a reserve seedling stand and an interlocking member. It is a top view near a support rail. It is a top view of the rice transplanter in the 1st different form of embodiment of the invention.

  In the front-rear direction and the left-right direction in the embodiment of the present invention, the traveling direction on the forward side during work traveling of the aircraft 11 is “front” and the traveling direction on the reverse side is “rear” unless otherwise specified. . The direction corresponding to the right side with respect to the forward posture in the front-back direction is “right”, and the direction corresponding to the left side is “left”.

(Overall configuration of riding rice transplanter)
As shown in FIGS. 1 and 2, the rice transplanter has a link mechanism 3 (corresponding to an elevating mechanism) supported at a rear portion of an airframe 11 having right and left front wheels 1 and right and left rear wheels 2. A hydraulic cylinder 4 (corresponding to an elevating mechanism) that extends to the rear side and operates the link mechanism 3 is provided with a seedling planting device 5 at the rear of the link mechanism 3.

  A driver's seat 12 is provided in the center of the right and left sides of the body 11, a cover 13 is provided in front of the steering handle 14, and a steering handle 14 for steering the front wheels 1 is provided above the cover 13.

  A support frame 16 is disposed along a vertical direction at a front portion on a right portion and a front portion on a left portion of a floor 15 supported by the body 11, and is connected to the body 11. A plurality of fixed spare seedling stands 17 are supported by the support frame 16.

(Configuration of seedling planting device)
As shown in FIG. 1 and FIG. 2, the seedling planting device 5 includes a planting transmission case 6 arranged at predetermined intervals in the left-right direction, and is rotatable to the right and left rear portions of the planting transmission case 6. A rotating case 7 supported by the rotating case 7, planting arms 8 provided at both ends of the rotating case 7, a float 9, a seedling rest 10, and the like are provided, and are configured in a six-row type.

  In the seedling planting apparatus 5, the rotating case 7 is driven to rotate as the seedling rest 10 is reciprocated to the left and right, and the planting arm 8 alternately takes out seedlings from the lower part of the seedling rest 10. And plant it on the rice field.

A seedling rest 10 is provided with six seedling rest surfaces 10a on which seedlings are placed, and a vertical wall-shaped partition part 10b for partitioning the adjacent seedling rest surfaces 10a.
A belt type vertical feeding mechanism 18 is provided below the seedling mounting surface 10a of the seedling mounting base 10, and when the seedling mounting 10 reaches the right end or the left end of the reciprocating horizontal feed drive, the vertical feeding mechanism 18 is activated. Actuating only for a predetermined stroke, the seedlings on the seedling mounting table 10 (the seedling mounting surface 10a) are sent to the lower side.

  An upper seedling sensor 19 for detecting the presence or absence of a seedling by contact with the seedling is provided above the seedling mounting surface 10a of the seedling mounting base 10. A lower seedling sensor 20 for detecting the presence or absence of a seedling when the seedling comes into contact is provided below the seedling mounting surface 10 a of the seedling mounting base 10.

(Constitution of spare seedling rest provided in the rear of the fuselage)
As shown in FIGS. 1 and 2, a spare seedling rest 21 is provided at the rear of the body 11 so as to be located behind the driver's seat 12.

  A horizontally long support portion 22 having the same width as the width of the seedling rest 10 is provided on the spare seedling rest 21, and a large number of spherical rollers 23 are freely rotatable around a longitudinal axis. Is provided on the support portion 22.

  As shown in FIGS. 3 and 4, a round pipe-shaped support rail 25 (corresponding to a moving support mechanism) is supported by a support frame 26 along the left-right direction on a body frame 24 at the rear of the body 11. A support plate 27 is connected to a lower portion of the support portion 22, and a channel-like bracket 28 is connected to a lower portion of the support plate 27.

A drum-shaped support roller 29 (corresponding to a movement support mechanism) (corresponding to a posture changing mechanism) is prepared, and the upper and lower support rollers 29 are supported by a bracket 28 so as to be freely rotatable around a longitudinal axis. The support rail 25 is sandwiched between the upper and lower support rollers 29 from above and below.
With the above structure, the spare seedling rest 21 is supported by the support rail 25 and the support roller 29 at the rear of the body 11 so as to be reciprocally movable in the left-right direction.

  The upper and lower support rollers 29 move while rolling along the support rail 25, and do not roll along the support rail 25, but around the axis P1 in the left-right direction of the support rail 25. It is possible to slide along the perimeter. By removing the lower support roller 29 from the bracket 28, the spare seedling rest 21 can be removed from the support rail 25.

  Thus, the stand 21 for the spare seedlings is supported by the upper and lower support rollers 29 so as to be freely changeable into a supporting posture A1 and a replenishing posture A2 which is lowered with respect to the supporting posture A1.

  A round bar-shaped stopper 30 is supported at the rear of the body frame 24 along the left-right direction, and the spare seedling rest 21 (support plate 27) operated in the replenishment posture A2 hits the stopper 30, so that the spare seedling is placed. The table 21 is held in the supply position A2.

(Structure of interlocking member)
As shown in FIGS. 1, 2 and 3, the interlocking member 31 is supported swingably up and down around a horizontal axis P <b> 2 at the rear part of the reserve seedling rest 21.

  The interlocking member 31 is formed in a flat plate shape and has a lateral width of one seedling mounting surface 10 a of the seedling mounting table 10, and a notch-shaped concave portion 31 a is formed at a rear portion of the interlocking member 31. Six interlocking members 31 are supported by the spare seedling rest 21 so as to correspond to each of the seedling rest surfaces 10 a of the seedling rest 10.

  When the interlocking member 31 is swung downward, the interlocking member 31 enters the seedling mounting surface 10a of the seedling rest 10, and the right end and the left end of the interlocking member 31 contact the partition 10b of the seedling rest 10. As a result, the stand 21 for the spare seedlings and the stand 10 for the seedlings are connected.

  When the seedling rest 10 is reciprocally traversed in a state where the spare seedling rest 21 and the seedling rest 10 are connected by the interlocking member 31, the lateral movement of the seedling rest 10 is reserved via the interlocking member 31. The seedling rest 21 is transmitted to the seedling rest 21 so that the spare seedling rest 21 and the seedling rest 10 move sideways together.

  A protrusion (not shown) is formed along the vertical direction on the seedling mounting surface 10a of the seedling mounting base 10 so that the seedlings on the seedling mounting base 10 (seedling mounting surface 10a) can easily move downward. It is configured. When the interlocking member 31 is swung downward and enters the seedling resting surface 10a of the seedling rest 10, the protrusion of the seedling resting surface 10a of the seedling rest 10 enters the recess 31a of the interlocking member 31. Thus, the connection between the spare seedling rest 21 and the seedling rest 10 becomes more reliable.

  When the interlocking member 31 is swung downward to enter the seedling mounting surface 10a of the seedling rest 10, the upper seedling sensor 19 enters the recess 31a of the interlocking member 31, and the interlocking member 31 There is no contact with the upper seedling sensor 19.

  When the spare seedling rest 21 is operated to the replenishment posture A2 as described in the above (Configuration of the spare seedling rest provided on the rear part of the machine body), the interlocking member 31 moves the seedling rest 10 accordingly. The seedling moves downward along the seedling placing surface 10a. Even in such a state, the upper seedling sensor 19 only enters the recess 31 a of the interlocking member 31, and the interlocking member 31 does not contact the upper seedling sensor 19.

(Configuration of right and left seedling supply mechanism)
As shown in FIGS. 1 and 2, right and left seedling supply mechanisms 32 are provided on the right and left sides of the body 11.

  The seedling replenishing mechanism 32 is provided with a vertically long support portion 33 having the same width as the width of one seedling placing surface 10 a of the seedling placing stand 10. The plurality of transport belts 34 and the transport belts 34 are rotationally driven. And an electric motor (not shown).

  The support portion 33 is formed in a mountain shape in a side view in which a central portion is slightly elevated, a front portion of the support portion 33 is connected to the support frame 16, and a rear portion of the support portion 33 is connected to the body frame 24 by the support frame 35. Are linked. The rear end portions of the right and left support portions 33 are close to the right front end portion and the left front end portion of the reserve seedling rest 21.

  When the operator gets on and off the machine body 11, between the cover 13 and the right support frame 16 (the seedling replenishing mechanism 32), between the cover 13 and the left support frame 16 (the seedling replenishing mechanism 32), and between the cover 13 and the right seedling replenishing mechanism. What is necessary is just to pass under the mechanism 32 and under the left seedling supply mechanism 32.

On the floor 15, right and left operation pedals 36 are provided at lower portions of the front right and left front portions of the driver seat 12.
When the right operating pedal 36 is depressed, the electric motor of the right seedling replenishing mechanism 32 is operated, and the transport belt 34 of the right seedling replenishing mechanism 32 is driven to rotate rearward. Is stopped, the electric motor (transport belt 34) of the right seedling supply mechanism 32 stops.

  When the left operation pedal 36 is depressed, the electric motor of the left seedling supply mechanism 32 is operated, and the transport belt 34 of the left seedling supply mechanism 32 is driven to rotate rearward, and the left operation pedal 36 is depressed. Is stopped, the electric motor (transport belt 34) of the left seedling supply mechanism 32 stops.

(Replenishment of seedlings to seedling stand during planting work)
When starting the planting operation, as shown in FIGS. 1, 2, and 3, sufficient seedlings are placed on each of the seedling placing surfaces 10a of the seedling placing stand 10 (both the upper seedling sensor 19 and the lower seedling sensor 20). Then, sufficient seedlings are placed on the fixed spare seedling holder 17 and the right and left seedling supply mechanisms 32, and the planting operation is started.

In this case, the spare seedling rest 21 is operated in the supporting posture A1, and the interlocking member 31 is swung upward to be removed upward from the seedling rest surface 10a of the seedling rest 10. Thus, even if the seedling rest 10 is driven to reciprocate, the spare seedling rest 21 is stopped in the supporting posture A1.
Even when the seedling planting device 5 is moved up and down, such as when turning around on a ridge, the seedling rest 10 does not interfere with the spare seedling rest 21 and the interlocking member 31.

  For example, the seedlings on the two seedling rests 10a at the center of the seedling rest 10 are slightly consumed, and the upper seedling sensor 19 on the two seedling rests 10a at the center of the seedling rest 10 does not detect the seedlings. Suppose.

In such a state, an alarm buzzer (not shown) is activated and displayed on a control panel (not shown).
While continuing the planting operation, the operator depresses the right (left) actuation pedal 36 to operate the transport belt 34 of the right (left) seedling supply mechanism 32, and the right (left) seedling. The seedling of the replenishing mechanism 32 is sent to the right part (left part) of the stand 21 for the spare seedling.

  While continuing the planting operation, the worker pushes the seedlings sent to the right part (left part) of the spare seedling rest 21 by hand to correspond to the two seedling rest faces 10a at the center of the seedling rest 10. Is moved to the position of the stand 21 for the spare seedlings.

  Next, the interlocking member 31 of the two seedling rest surfaces 10a at the center of the seedling rest 10 is swung downward to enter the two seedling rest surfaces 10a at the center of the seedling rest 10. Accordingly, the spare seedling rest 21 and the seedling rest 10 are connected by the interlocking member 31, and the spare seedling rest 21 and the seedling rest 10 move sideways together.

  Even when the seedling planting device 5 is moved up and down, such as when turning around on a ridge, the interlocking member 31 moves up and down around the axis P2 of the spare seedling rest 21 as the seedling rest 10 moves up and down. Rocks. As a result, the raising and lowering of the seedling placement device 5 (the seedling rest 10) with respect to the spare seedling rest 21 is permitted, and the seedling planting is performed without being restricted by the spare seedling rest 21 and the interlocking member 31. The lifting and lowering operation of the device 5 (the seedling rest 10) is performed without difficulty.

  Next, the seedlings on the two seedling resting surfaces 10a at the center of the seedling rest 10 are further consumed, and the lower seedling sensor 20 of the two seedling resting surfaces 10a at the center of the seedling rest 10 is in a state where the seedlings are not detected. Then, an alarm buzzer (not shown) is activated and displayed on a control panel (not shown).

  Accordingly, the operator operates the spare seedling rest 21 in the replenishment posture A2 while moving the seedlings of the spare seedling rest 21 downward while continuing the planting operation. The two seedlings at the center of the platform 10 are moved to the upper part of the surface 10a.

  In the spare seedling rest 21, the roller 23 rotates around the axis in the front-rear direction, but since it is spherical, the seedling of the spare seedling rest 21 slides down on the surface of the roller 23 and moves downward. Move comfortably.

In order to further replenish the seedlings on the two seedling rest surfaces 10a at the center of the seedling rest 10, the interlocking member 31 is swung upward to remove the seedling rest 10 from the seedling rest surface 10a to the upper side. Perform the same operation.
When the right and left seedling supply mechanisms 32 run out of seedlings, the planting operation is temporarily suspended, the airframe 11 is stopped, and the seedlings on the fixed spare seedling cradle 17 are placed on the right and left seedling supply mechanisms 32. I do.

(First Embodiment of the Invention)
The spare seedling mounting table 21 and the seedling supply mechanism 32 may be configured as shown in FIG.
The spare seedling rest 21 is not formed so as to extend over all the seedling rests 10a of the seedling rest 10, but corresponds to the two right seedling rests 10a of the seedling rest 10, as shown in FIG. The right spare seedling rest 21 and the interlocking member 31 are provided, and the left spare seedling rest 21 and the interlocking member 31 corresponding to the left two seedling resting surfaces 10a of the seedling rest 10 are provided.

  The right and left spare seedling rests 21 are supported by a movement support mechanism (support rail 25) so as to be capable of reciprocating in the left-right direction independently of each other. The roller 23 is freely rotatably supported around the axis in the left-right direction.

A right seedling replenishing mechanism 32 capable of supporting seedlings in two rows corresponding to the right spare seedling rest 21 and a left seedling replenishing mechanism capable of supporting seedlings in two rows corresponding to the left spare seedling rest 21. A mechanism 32 is provided.
On the two seedling rests 10a at the center of the seedling rest 10, the operator does not use the spare seedling rest 21 and the seedling replenishing mechanism 32, and the operator can use the fixed spare seedling rest 17 or the right and left seedling replenishing mechanisms. 32, the seedlings are taken out by hand and supplied to the two seedling rest surfaces 10a at the center of the seedling rest 10.

(Second Alternative Embodiment of the Invention)
A conveyor belt (not shown) for feeding the seedlings in the left-right direction, and an electric motor (not shown) for rotating and driving the conveyor belt are provided on the stand 21 for the spare seedlings. After being sent to the seedling holder 21, the seedlings may be transported by the conveyor belt to the position of the spare seedling holder 21 corresponding to the desired seedling holder surface 10 a of the seedling holder 10.

(Third alternative embodiment of the invention)
The reserve seedling rest 21 may be configured to be operated in the support position A1 and the supply position A2 by an electric motor (not shown).

(Fourth embodiment of the invention)
In the interlocking member 31 and the seedling rest 10 (the seedling resting surface 10a), one is provided with an engaging projection (not shown), and the other is provided with an engaging recess (not shown). When swinging downward, the convex portion may enter the concave portion, so that the spare seedling rest 21 and the seedling rest 10 may be connected.

(Fifth alternative embodiment of the invention)
The spare seedling rest 21 and the interlocking member 31 may be configured as described below.
The spare seedling rest 21 is fixed to the body frame 24 of the machine body 11 so that the spare seedling rest 21 does not move in the left-right direction and is fixed in the supporting posture A1.

  The interlocking member 31 is movably supported in the left-right direction of the body 11 and is supported so as to be able to change its posture to a horizontal posture and a rearwardly inclined posture. The interlocking member 31 is configured to be able to be set to a state where it is connected to the seedling rest 10 and a state where the connection is released.

According to the above configuration, first, the interlocking member 31 is set in the horizontal posture, the connection between the interlocking member 31 and the seedling rest 10 is released, and the planting operation is started.
Next, when the upper seedling sensor 19 does not detect a seedling, the seedlings of the right (left) seedling supply mechanism 32 are sent to the spare seedling rest 21 and are sent from the spare seedling rest 21 to the interlocking member 31 in a horizontal posture. . The interlocking member 31 is connected to the seedling rest 10 so that the horizontal interlocking member 31 and the seedling rest 10 move together.

  Next, when the lower seedling sensor 20 does not detect the seedling, the interlocking member 31 in the horizontal position is operated to the inclined position, and the seedling of the interlocking member 31 is moved to the upper part of the seedling placing surface 10a of the seedling rest 10. .

(Sixth alternative embodiment of the invention)
An unmanned rice transplanter that is equipped with a GPS device and an automatic traveling device and travels unattended and automatically may be used. In this case, based on the upper seedling sensor 19 and the lower seedling sensor 20, the right (left) seedling supply mechanism 32 (conveyor belt 34), the spare seedling pedestal 21 and the interlocking member 31 are automatically operated. What is necessary is just to comprise.

  The present invention can be applied to not only a six-row type rice transplanter but also a four-row type, an eight-row type, and a ten-row type rice transplanter, and can also be applied to a rice transplanter equipped with a fertilizer and a chemical sprayer. .

3 link mechanism (elevation mechanism)
4 Hydraulic cylinder (elevating mechanism)
5 Seedling plant 10 Seedling stand 11 Body 19 Upper seedling sensor 20 Lower seedling sensor 21 Spare seedling rest 25 Support rail (moving support mechanism)
29 Support roller (movement support mechanism) (posture change mechanism)
31 Interlocking member A1 Support posture A2 Supply posture

Claims (5)

A lifting mechanism extending rearward from the rear of the aircraft,
A seedling rest is provided which is driven reciprocatingly and laterally along the left-right direction, and a seedling planting device supported by the elevating mechanism,
There is a stand for spare seedlings provided at the rear of the aircraft,
A movement support mechanism for supporting the spare seedling rest on the body so as to be reciprocally movable in the left-right direction,
Connecting the spare seedling rest and the seedling rest, transmitting the lateral movement of the seedling rest to the spare seedling rest, and moving the spare seedling rest together with the seedling rest, And an interlocking member for guiding the seedlings of the spare seedling rest from the spare seedling rest to an upper portion of the seedling rest.   2. The interlocking member is supported on the spare seedling rest so as to be able to swing up and down so that the raising and lowering of the seedling planting device by the lifting mechanism is allowed with respect to the spare seedling rest. 3. Rice transplanter according to the above.   The supporting posture for supporting the seedlings, and the replenishment posture for moving the seedlings of the spare seedling rest from the interlocking member to the seedling rest in a state of being lowered with respect to the supporting posture, the posture of the spare seedling rest. The rice transplanter according to claim 1 or 2, further comprising a posture changing mechanism for supporting the rice transplanter in a freely changeable manner. The moving support mechanism,
A support rail supported by the aircraft along a left-right direction,
A support roller is provided on the stand for the reserve seedling, and supports the reserve for seedling movably along the support rail by rolling along the support rail,
The posture changing mechanism,
The support roller slides along the periphery of the support rail around the axis of the support rail in the left-right direction without rolling along the support rail, thereby holding the preliminary seedling rest in the support posture. 4. The rice transplanter according to claim 3, wherein the posture is changed between the supply posture and the supply posture. 5. An upper seedling sensor that is provided on an upper part of the seedling rest and detects the presence or absence of a seedling,
The rice transplanter according to any one of claims 1 to 4, further comprising a lower seedling sensor provided at a lower portion of the seedling holder and detecting the presence or absence of a seedling.

Images