JPH1132517A - Seedling feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling feeder capable of feeding seedlings onto the ground so as to be sufficiently profitable even if operating efficiency is low. SOLUTION: This seeding feeder is equipped with a seedling storage part 3 for providing a pair of lateral seedling shelves 2 for placing a nursery box 1 in ten stages in vertical direction, a lifting and lowering mechanism A for enabling driving and lifting and lowering of the seedling shelves 2, a carrying mechanism capable of feeding the nursery box 1 from the lower direction of the seedling storing part 3, a carrying rail 4 for transferring the nursery box 1 fed out by a carrying mechanism in a state in which a seedling storing part 3 is loaded on a load-carrying platform N of lightweight truck onto the ground. A roller 33 for rolling on the ground is provided at the top of the carrying rail 4 and the carrying rail 4 is supported so as to enable free rolling by the seedling storage part 3 supported rotatably onto a receiving table.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling supply device which operates so that seedling receiving tools stored in a seedling storing section are sequentially placed on the ground, and more specifically, is provided separately for a truck car or the like. It relates to a device to be mounted on a self-propelled aircraft.

[0002]

2. Description of the Related Art As a device for supplying seedlings on the ground, there is known a seedling box supply / collection machine disclosed in Japanese Patent Application Laid-Open No. 8-308320. This is a dedicated machine that can supply the seedling boxes after greening stacked on a trolley etc. on the ground for hardening, and the collecting state where the seedling boxes after hardening are picked up from the ground and collected. Was composed.

[0003]

The nursery box supply / recovery machine, like the rice transplanter, has an extremely short operation time per year and an extremely low operation rate. There was room for improvement from an economic perspective. An object of the present invention is to configure a seedling supply device that supplies seedlings on the ground at a low cost so that profitability can be sufficiently obtained even when the operation rate is low.

[0004]

[Means for Solving the Problems]

[Configuration] A first invention comprises a seedling storage section provided with a plurality of upper and lower seedling support sections on which a seedling receiving device can be placed, an elevating mechanism capable of driving up and down the seedling support section, and a seedling from below the seedling storage section. A seedling supply device is provided including a carrying-out mechanism capable of feeding out a receiving tool, and a carrying-out rail capable of transferring the seedling receiving tool fed out by the carrying-out mechanism in a state where the seedling storage section is mounted on the self-propelled body, to the ground. It is characterized by doing.

According to a second aspect of the present invention, in the first aspect, a roller capable of rolling and moving in contact with the ground is provided at a distal end portion of the carry-out rail, and the roller is located below the carry-out rail. And a protruding operation state in which the seedling receiving device is located above the carry-out rail and can prevent the discharge movement of the seedling receiving device from the carry-out rail.

A third invention is the first or second invention, wherein
It is characterized in that the carry-out rail is configured to be rollable with respect to the seedling storage section.

A fourth invention is characterized in that, in the first to third inventions, the carry-out mechanism is configured to be able to be driven in reverse rotation.

According to the first aspect of the present invention, the seedling receiving tool stored in the seedling storing section can be supplied onto the ground by the carry-out mechanism and the carry-out rail.
It can be done with the seedling storage unit mounted on another self-propelled aircraft. That is, by moving the carrying-out mechanism while the self-propelled body is running, it becomes possible to continuously place the seedling receiving device of the seedling storage unit on the ground. This is because most farmers have self-propelled vehicles for agricultural work such as light trucks and trucks, and by paying attention to this point, the seedling receiving device can be used as a seedling supply device without running function. It became possible to continue to supply above.

[0009] That is, the supply operation can be performed only by combining with the traveling function of a truck car, a transport vehicle, or the like. However, if the apparatus can be mounted and self-propelled, it can function. , In that respect it is versatile. In addition, a dedicated traveling machine is not required, and the cost can be significantly reduced.

According to the second aspect of the present invention, if the roller is switched to a rolling state located below the carry-out rail,
When the self-propelled machine body is run to supply the seedling receiver on the ground, the tip of the transport rail can be supported by the rolling roller, and a smoother and more stable supply operation state can be obtained as compared with a state in which the ground is dragged. When the supply operation is stopped, the roller is switched to the projecting state, so that the seedling receiving device on the carry-out rail can be held so as not to be discharged from the carry-out rail. That is, with the roller position switching structure, the two functions described above can be exhibited with a single roller.

The ground on which the seedling receiving device is placed may be a good place paved with concrete or the like, or a relatively uneven or uneven surface such as unpaved ground or vacant land. If the tool and the ground are inclined left and right, a ground contact shock may occur. Therefore, according to the configuration of claim 3, since the take-out rail can be rolled with respect to the seedling storage part, when the ground is partially inclined left and right, the take-out rail is rolled in the same direction and the grounding is performed. Shock can be reduced or eliminated. In this case, since the moving speed of the seedling receiving device at the transfer point from the seedling storage unit to the carry-out rail is sufficiently low, even if there is a left-right inclination deviation, there is no problem such as a disturbed transport posture. The measures work effectively.

According to the fourth aspect of the present invention, since the carrying-out mechanism can be driven in the reverse direction, the seedling receiving device can be carried into the seedling storage section from outside, and in combination with the operation of the elevating mechanism,
Seedling receivers, that is, seedlings can be sequentially loaded into the seedling storage section. In other words, the operation of loading the seedlings on each of the plurality of stages of the seedling support portions is also mechanized, and the preparation work before the supply work to the ground can be easily performed.

[Effect] In the seedling supply apparatus according to any one of the first to fourth aspects, the dedicated self-propelling function can be omitted by mounting the apparatus on another self-propelled body, so that the apparatus can be compactly configured. However, the number of self-propelled aircraft is not limited.

According to a second aspect of the present invention, a single roller can be switched between a smooth and stable operation of supplying seedlings to the ground and a state of holding a seedling receiving device on a carry-out rail. And has the advantage of being obtained by inexpensive means.

[0015] In the seedling supply device according to the third aspect, the rolling shock of the unloading rail can suppress or eliminate the grounding shock of the seedling receiving device regardless of the unevenness of the ground, and the seedlings can be stored in a good condition without any posture disturbance. You can now put it on the ground.

According to the fourth aspect of the present invention, the forward / reverse drive structure of the unloading mechanism enables convenient supply of seedlings as well as loading of seedlings into the seedling storage section.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 3 and 4, seedling storage provided with seedling shelves (one example of seedling supporting portions) 2 on which seedling receiving devices 1 such as a seedling scooping plate and a seedling raising box can be placed in a plurality of upper and lower stages (10 stages). Section 3, a raising / lowering mechanism A capable of driving and raising / lowering the seedling rack 2, and a carrying-out mechanism B capable of feeding out the seedling receiving tool 1 from below the seedling storage section 3.
And a take-out rail 4 capable of transferring the seedling receiver 1 fed out by the take-out mechanism B onto the ground in a state where the seedling storage section 3 is mounted on the self-propelled body, to constitute a seedling supply device. In addition, the seedling storage section 3 is provided with a turning mechanism C that can rotate around a vertical axis with respect to a support 5 that supports the seedling storage section 3.

First, the use of the seedling supply device will be described. The seedlings W stored in the seedling storage section 3 are arranged in a paved yard of a nursery facility for hardening treatment, or as a spare seedling for replenishment on a headland. The work of supplying the ground to the ground, such as putting it down, is mainly performed, and the work of supplying seedlings from the headland to the rice transplanter is also possible. For that purpose, there is also a pre-processing work in which the seedling receiving device 1 on which the seedlings W are placed in advance is loaded on the seedling rack 2.

As shown in FIG. 1, the ground supply operation is performed while the seedling supply device is mounted on a self-propelled body such as a carrier N of a light truck K which is separately prepared. The seedling receiver 1 can be continuously or intermittently placed on the ground by running at a low speed while discharging and driving the seedling receiver 1 in a state where the seedling receiver 1 is grounded. At this time, a roller 33 described later is kept in a state for rolling operation.

Then, as shown in FIG.
Is parked on the headland, and the seedling storage section 3 is turned and turned sideways so that the seedling can be supplied to the rice transplanter from the end of the carry-out rail 4. At this time, a roller 33 to be described later is in a projecting state. Also, when the unloading rail 4 is driven in reverse,
The non-drive type is such that the take-out rail 4 is inclined such that the side of the seedling storage part 3 becomes lower, so that the seedling receiving tool 1 can be carried into the seedling storage part 3 from outside.

The structure and function of each section will be described below.

As shown in FIGS. 1 to 4, the seedling storage section 3
It is configured as a frame frame including four front and rear, left and right vertical struts 6, four front and rear upper and lower horizontal struts 7A for connecting these vertical struts 6 together, and two upper and right and left connecting struts 7B in total, Each vertical support 6 has a lifting chain 8 for raising and lowering the seedling rack 2.
And the four lifting chains 8 at the four locations,
An elevating mechanism A comprising an elevating electric motor 9 and the like for driving them simultaneously is arranged at the bottom frame 3 a of the seedling storage section 3. One seedling rack 2 is formed by laying an angle material having a substantially L-shaped cross section over the elevating chains 8 adjacent to each other in the longitudinal direction of the seedling storage part 3 in a plan view. The seedling receiving device 1 is placed so as to straddle the seedling rack 2 at both ends in the longitudinal direction. That is, ten stages of the seedling shelves 2 on which six seedling receiving tools 1 can be placed are provided, and a total of 60 mat seedlings W can be stored in the seedling storage portion 3.

As shown in FIG. 6 and FIG. 7, the posture assisting plate 10 is
The seedling shelf 2 is bolted through. Left and right seedling shelf 2,
In the placement state where the two face each other, the posture assisting plate 10 extends below the seedling shelf 2 so that the placement surface 2a does not tilt even when the weight of the seedling receiving tool 1 acts.

The transmission system of the lifting mechanism A will be described. As shown in FIGS. 4 and 5, the lifting chain 8 is composed of the upper and lower sprockets 1.
Chain drive mechanisms 14, 14 are provided on long drive shafts 13, 13, respectively, which are wound around the upper and lower elevating chains 8, 12, which are wound on the left and right front and rear elevating chains 8, 8, respectively. I have. The same gears 15, 15 attached to the drive sprocket shafts are meshed with each chain interlocking mechanism 14, so that the front, rear, left and right elevating chains 8 are driven synchronously in the same speed and in the same direction. The gear 15 and the elevating electric motor 9 with a speed reducer are linked with the chain. The raising / lowering electric motor 9 can be driven forward and reverse, and can drive up and down the seedling rack 2.

Immediately above the elevating electric motor 9, there is provided an unloading mechanism B for receiving the seedling receiver 1 lowered by the elevating mechanism A and transferring the same in the longitudinal direction of the seedling rack 2. That is, as shown in FIG. 8 and FIG.
A large number of rotating rollers 18 are arranged and supported in two rows by the central support plate 17 and a drive belt 20 that can be driven on the support plate 17 and a drive mechanism 20 thereof are provided to constitute a carry-out mechanism B. . The drive mechanism 20 is configured by providing a carry-out electric motor that is linked to one of the wheels (toothed drum, pulley, sprocket, etc.) 21.

The carry-out electric motor 20 can be driven forward and reverse, and can carry out the seedling receiving device 1 from the seedling storage portion 3 to the outside and carry it into the seedling storage portion 3 from the outside. The surface of the conveyor belt 19 on which the seedling receiving device is placed is finished in a smooth state, and the seedling receiving unit 3 is transported by the frictional resistance between the conveyor belt 19 and the seedling receiving device 1. The conveyor belt 19 and the bottom surface of the seedling receiving device 1 slip when hitting an obstacle such as the inner wall surface of the vehicle, so that each portion is not damaged.

As shown in FIGS. 3, 4, and 11, the receiving table 5 supports the seedling storage section 3 so as to be pivotable about a vertical fulcrum P, and is stably mounted on the bed N of the light truck K. It is configured to be able to. That is, a total of four support rollers 22 (front, rear, left and right) are arranged around the fulcrum P with their rotation axes different by 90 degrees, and the rotation shaft 23 having the fulcrum P is placed on the receiving stand 5 and the seedling storage part. 3 and constitutes a swivel mechanism C. The swivel mechanism C can be swiveled by manual operation by pushing the seedling storage part 3 by hand. Of course, it may be driven and rotated by an actuator such as an electric motor.

The cradle 5 is provided with caster wheels 24 so as to be movable, and is also provided with left and right tilt plates a, a, a rear opening / closing door b, and an operation door so as to be firmly supported by the pallet N. A strut member 25 is provided which can act on the partition wall c with the chamber. In other words, when mounted on the light truck carrier N, each strut member 25 is extended and brought into close contact with or biased against the tilting plate a or the like, so that the
That is, the seedling supply device can be fixed to the carrier N without falling down.

As shown in FIGS. 1 to 3, FIG. 5, and FIG.
The unloading rail 4 is configured by supporting a large number of rolling rollers 26 between left and right support frames 4a, 4a that can swing around a horizontal fulcrum X at the base.
It is swingably movable between a retracted state in which it rises and swings and stands up along the side surface of the seedling storage section 3 and an operating state in which the tip is located near the ground. The rolling roller 26 is configured to be a forward / reverse drive type using a transport electric motor 44 and a transmission mechanism 45 such as a chain or the like, so that the transfer of the seedling receiving device 1 and the transfer of the seedling receiving device 1 can be performed. Further, it is also possible to adopt a structure in which power is taken from the unloading mechanism B by a transmission mechanism such as a belt or a chain, and the transport electric motor 44 is omitted.

The base 4A, which supports the support frames 4a, 4a at the fulcrum X, is supported by the seedling storage unit 3 in a rollable manner about the longitudinal axis Z, and at the tip of the unloading rail 4,
A roller 33 capable of rolling and moving in contact with the ground is provided. As shown in FIGS. 1 and 2, the left and right rollers 33 are
The left and right stays 34 are pivotally supported by the support frame 4a so as to be able to swing up and down.
And a switching lever 36 mounted on a pivot shaft 35.
Operation, the roller 33 is in a rolling operation position below the take-out rail 4 and a projecting action is located above the take-out rail 4 to prevent the seedling receiving device 1 from being displaced from the take-out rail 4. It is configured to be able to switch to the state. That is, as shown in FIG. 1, during the operation of placing the seedling receiving device 1 on the ground while running the light truck K, the roller 33 is brought into the rolling operation state and grounded. Then, as shown in FIG. 2, at the time of the operation of supplying the seedlings to the rice transplanter T in the field, the roller 33 is brought into a protruding operation state and used as a stopper of the seedling receiving device 1.

As shown in FIGS. 3 and 10, a fulcrum X provided below the side surface (hereinafter, abbreviated as an outlet side surface) of the seedling storage unit 3, which is on the lower side in the discharge direction of the seedling receiving device by the unloading mechanism B, One end of each of the support frames 4a, 4a is pivotally supported, and
7, two wire ropes 28, 28 are attached to the other end. Each of the wire ropes 28, 28 is guided to a hoisting motor unit 27 by using a guide roller 29 provided on the upper part of the vertical columns 6, 6 on the outlet side surface and two lower lateral guides 30a, 30b. A winch D that swings up and down the carry-out rail 4 by forward and reverse drive of the motor unit 27 is configured.

In the operation of supplying the seedling receiving device 1 to the ground,
When the ground has undulations or irregularities, the wire rope 28 is further extended from the state in which the roller 33 is grounded and is set slightly loose, so that the unloading rail 4 follows the ground as the light truck K travels. Rolling,
The seedling receiving tool 1 can be supplied on the ground with less ground contact shock.

The horizontal support 7A on each side of the entrance and the exit is formed in a substantially U-shape in plan view, and the second-stage seedling shelves 2 and 3 from the bottom.
It is attached to two places, that is, between the seedling racks 2 of the tier and immediately below the seedling racks 2 in the uppermost tier.
The fall prevention member 31 of the seedling receiving device 1 is erected and connected to each other. Also, a fall prevention member 3 on the entrance side surface.
At the lower end of 1, there is provided a door 32 which can swing at a fulcrum Y provided at the upper part, and an operating posture for hanging and preventing the seedling receiving device 1 from jumping out from the lower two-stage seedling rack 2, It can be freely switched to a retreating position in which the seedling receiving device 1 can be moved in and out by swinging upward by about 90 degrees from the working position.

That is, as shown in FIG.
In a state where the seedling supply device is mounted on the carrier N (the carrying-out rail 4 is in the retracted state), the opening and closing of the door 32 on the entrance side surface (rear side of the carrier) allows the seedling receiver 1 to be taken in and out. . Also, as shown in FIG.
When the is set to the operating state, the seedling receiving device 1 can be taken in and out from the exit side surface.

As shown in FIG. 13 and FIG.
Plates 37 to 4 covering the front, rear, left and right side surfaces and the top surface, respectively
1 may be configured to be coverable. That is, the lower supporters 42 are fixed to the four lower corners on the outside of each vertical support 6 and the upper supporters 43 are fixed to the four upper corners on the outside via stays or the like. Boards 39, 40
Are four upper and lower upper and lower holders 43, 43, 42, 4
The upper cover 41 is slid into the lateral grooves 43b of the upper receiving members 43 from the side while being fitted into the second grooves 43a and 42a by sliding from above. The lower receiving member 42 has a bottom surface 42b for supporting the cover plate.

The usage of the cover plates 37 to 41 is as follows. That is, if the seedling receiving device 1 is left standing on the seedling storage unit 3 due to work waiting or the like, the seedling receiving device 1 is exposed to the wind and sunlight, and is easily withered. It is conceivable that malfunctions are likely to occur. Therefore, the front, rear, left, right, and top cover plates 37-4
By attaching all or plural or singular of 1, wind,
It is possible to easily maintain the state of the seedlings W and the seedling supply device while preventing rain and sunlight, and when the five seedlings are covered, the seedlings W and the seedling supply apparatus can be used as a transport cart for seedlings.

Next, various operation controls in the ground supply operation will be briefly described. First, elements necessary for the various controls will be described. As shown in FIGS. 3 and 4, a presence / absence switch 46 for detecting the presence or absence of the seedling receiving device 1 on the unloading mechanism B, a shelf full limit switch 47, a discharge completion limit switch 48, and a shelf lift detection limit switch 49.
And a shelf lowering detection limit switch 50 are provided in the seedling storage section 3.

The presence / absence switches 46 are provided on one of the left and right support frames 16, 16 and detect whether or not the seedling receiving device 1 exists on the rotating roller 18. The shelf full load limit switch 49 is disposed at a height position where the uppermost seedling rack 2 on which the seedling receiving device 1 is mounted is pushed by the uppermost seedling rack 2 to operate when the uppermost seedling rack 2 has risen to the upper limit. I have. As shown in FIG. 12, the switches 46 to 50 and the electric motors 9, 20, and 44 are connected to the control device 53.

The discharge completion limit switch 47 operates only when the uppermost seedling racks 2 and 2 move downward, and operates only when the lowermost seedling racks 2 are moved downward. When the second seedling rack 2 is at a height at which the seedling receiving device 1 is transferred to the unloading mechanism B, the discharge completion limit switch 48 is located at a height position between the second seedling rack 2 and the uppermost seedling rack 2.
Is arranged. In other words, if the uppermost seedling rack 2 descends after passing through the discharge completion limit switch 48, the seedling receiver 1 on the uppermost seedling rack 2 is driven and discharged by the unloading mechanism B immediately after that. By detecting that the uppermost seedling rack 2 has moved from the position before the lower limit lowering position to the lower limit lowering position, it is considered that the discharge of the seedling receiver 1 of the seedling storage unit 3 has been completed. The operation may be stopped when the discharge completion limit switch 80 is operated and all the six presence / absence switches 46 are detected as absent.

The shelf lift detection limit switch 49 is disposed immediately below the discharge completion limit switch 48, and the seedling shelves 2, 2 that have received the seedling receiving tool 1 from the unloading mechanism B are unloaded. After moving up from the height position of mechanism B,
The seedling shelves 2, 2 that are adjacent therebelow are set to operate until they rise to the level of the unloading mechanism B. The shelf lowering detection limit switch 50 is arranged at substantially the same height level as the shelf raising detection limit switch 49, and transfers the seedling racks 2, 2 on which the seedling receivers 1 </ b> A are mounted, to the unloading mechanism B. Activated when moving down as much as possible.

As shown in FIG. 5, a detachable control box 51 is provided on the side of the vertical support 6, and various switches (not shown) provided therein are operated by operating various switches (not shown).
The lifting mechanism A, the unloading mechanism B, the manual operation of the unloading rail 4 and the activation of various control means can be performed. Each of the control box 51 and the operating tool 52 dedicated to the winch D is connected to the main body of the apparatus via a long lead wire. It is possible to control the vehicle in a different manner.

Continuous feeding control This control is performed by the continuous feeding control means 54 for continuously placing the seedling receiving device 1 on the ground, and the control is started at the same time when the light truck K starts running. The unloading and transport motors 20 and 44 are driven, the seedling receiving tools 1 on the unloading mechanism B are sequentially fed out from the tip of the unloading rail 4 to the ground, and the innermost (frontmost) row of seedling receiving tools 1 are unloaded and unloaded. When there is no seedling receiving device 1 on the mechanism B, all the six existence switches 46 are turned off, the elevating mechanism A is lowered by one stage of the seedling shelf 2, and six new seedling receiving devices 1 are unloaded. It is mounted on the mechanism B.

By continuing this series of operations until the ten rows of seedling shelves 2 are empty, the seedling receiving device 1 can be continuously placed on the ground as shown in FIG. However, the speedometer V is connected to the control device 53, and depending on the relationship between the traveling speed and the unloading speed, except between the time when the seedling rack 2 moves up and down by one stage, between the adjacent seedling receiving devices 1, 1. It is also possible to perform control such that there is no gap or a certain interval is provided.

Intermittent feeding control For example, if the raising and lowering speed of one stage of the seedling rack 2 in the continuous feeding control is clearly reduced, the supply group of the six seedling receivers 1 continuously supplied to the ground is moved in the running direction. Is a means capable of discharging at intervals, that is, an intermittent feeding control means 55. Alternatively, the seedling receiving device 1 may be intermittently supplied to the ground by alternately displaying the driving state and the stopped state of the unloading mechanism B and the unloading rail 4 by a timer or the like.

Carry-in control In this system, each mechanism is driven in reverse to automatically load the seedling receiver 1 supplied to the tip of the carry-out rail 4 into the seedling storage part 3. In the control by the loading control means 56,
When the shelf full load limit switch 47 is activated and all the six existence switches 46 are turned ON, the operation stops.

[Another Embodiment] As shown in FIG. 15, a seedling supply device may be used as a seedling storage section 3 having two rows of right and left seedling shelves 2 on which six seedling receiving tools 1 can be placed. . By allowing the carry-out rail 4 to be switched to two positions by sliding in the left-right direction, a single carry-out rail 4 is sufficient while providing two rows of left and right seedling shelves 2.

In the winch D, the hoisting drive unit 27 and the three types of guide hooks 29, 30a, 30b are fixed, so that when the carry-out rail 4 is slid left and right, one wire rope 28 is pulled and the other wire rope 28 is pulled. Wire rope 28 is loosened. Therefore, the uppermost guide roller 2
A tightening mechanism E acting on each wire rope 28 at a position closer to the hoisting drive unit 27 than 9 is provided.

That is, as shown in FIGS.
A tightening mechanism E is configured such that a support rod 58 having a roller 57 at the tip thereof in sliding contact with the wire rope 28 can be moved back and forth by a screw feed mechanism 60 operated by a handle 59. That is, the relaxation mechanism E on the side pulled by the lateral movement of the unloading rail 4 retreats and moves the roller 57 to loosen the wire rope 28, and the relaxation mechanism E on the loose side causes the roller 57 to protrude further to release the wire. By pulling the rope 28, fluctuations in both rope lengths can be offset.

A guide member 58a is attached to the support rod 58 which engages with the screw shaft 59a rotated by the handle. The guide member 58a serves as a stopper for the support rod 58.

[Brief description of the drawings]

FIG. 1 is an operation diagram showing an operation state of supplying seedlings to the ground.

FIG. 2 is an operation diagram showing an operation state of supplying seedlings to a rice transplanter.

FIG. 3 is a side view of the seedling supply device with a light truck mounted.

FIG. 4 is a rear view of the seedling supply device with a light truck mounted.

FIG. 5 is a plan view showing a carry-out mechanism and a base of a carry-out rail.

FIG. 6 is a front view showing an attachment structure between a seedling rack and a chain.

FIG. 7 is a plan view showing attachment of a seedling rack and a chain.

FIG. 8 is a rear view showing a state in which the seedling receiving device is transported by the unloading mechanism.

FIG. 9 is a side view showing the structure of the unloading mechanism.

FIG. 10 is a plan view of a main part showing the structure of a winch.

FIG. 11 is a plan view showing a swirling structure of a seedling storage section.

FIG. 12 is a control block diagram.

FIG. 13 is a rear view showing a state where a cover plate is attached to the seedling storage section.

FIG. 14 is a perspective view of a main part showing a structure for attaching and detaching a cover plate.

FIG. 15 is a plan view showing a winch in the seedling supply device having a two-row structure.

FIG. 16 is a side view showing the arrangement of the winch shown in FIG. 15;

FIG. 17 is a cross-sectional side view showing the structure of the relaxation mechanism.

FIG. 18 is a sectional view of a screw feed mechanism portion of the relaxation mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seedling receiving device 2 Seedling support part 3 Seedling storage part 4 Unloading rail 33 Roller A Elevating mechanism B Unloading mechanism

Claims (4)

[Claims] 1. A seedling storage section provided with a plurality of upper and lower seedling support sections on which a seedling receiving device can be placed, an elevating mechanism capable of driving and raising and lowering the seedling support section, and a seedling receiving section below the seedling storage section. A seedling supply device comprising: a take-out mechanism capable of feeding the seedlings; and a take-out rail capable of transferring the seedling receiving tool fed by the take-out mechanism to the ground when the seedling storage unit is mounted on the self-propelled body. . 2. A rollable state in which a roller capable of rolling and moving in contact with the ground is provided at a tip end of the carry-out rail, and the roller is positioned below the carry-out rail, and The seedling supply device according to claim 1, wherein the seedling supply device is also positioned at an upper position so as to be able to switch to a projecting operation state in which the discharge movement of the seedling receiving device from the carry-out rail can be prevented. 3. The seedling supply device according to claim 1, wherein the carry-out rail is configured to be rollable with respect to the seedling storage part. 4. The seedling supply device according to claim 1, wherein the carry-out mechanism is configured to be able to be driven in reverse rotation.