JPH08289635A - Platform structure for placing rice plant seedling in transplanter - Google Patents

Abstract

PURPOSE: To provide a seedling platform for a transplanter easy to feed seedlings. CONSTITUTION: In this seedling platform 13, a plurality of the parts for placing seedlings 13a are respectively equipped with guides 50 for feeding seedlings 50 on the seedling-feeding side. The feeding guide 50 is composed of a guide bottom 51 and a raise of guide side walls 52a fitted to the guide bottom 51 along their one edge sides, respectively. The guide bottom 51 is driven by an air cylinder C4 on the projection side from a part 13a for placing seedlings until the right and left guide side walls 52a are opened by an air cylinder C5 to a working position where the guide side walls are opened outside in the transverse direction whereby the seedling feeding guide 50 becomes ready to feed the seedlings. At this time, a pair of the guide side walls 52a forms an opening 50a for inserting the seedlings on the edge of the guide bottom 51 and further makes the transverse width L1 of the inserting opening 50a larger than the part 13a for placing seedlings in the transverse width L2. Thus, the wider seedling-inserting opening 50a in the seedling feeding guide 50 is used as a seedling-inserting inlet for feeding seedlings to the part 13a for placing seedlings whereby the seedlings are smoothly fed to the seedling-inserting inlet without crowding out and exactly fed to the part 13a for placing the seedlings.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a plurality of seedling planting mechanisms arranged side by side in a machine body, and a plurality of seedling placement portions for placing seedlings supplied to these seedling planting mechanisms side by side in a machine body direction. TECHNICAL FIELD The present invention relates to a seedling platform structure of a transplanter including a seedling platform having a partition wall portion located between a pair of adjacent seedling stems of a plurality of seedling stems.

[0002]

2. Description of the Related Art Conventionally, in the above transplanting machine, as disclosed in, for example, Japanese Utility Model Laid-Open No. 56-52923, the partition wall portion is designed so that the lateral width of the partition wall portion of the seedling placing table becomes narrower toward the upper end side of the seedling placing table. By tapering and making the lateral width at the upper end of the seedling setting part wider than the lateral width at the lower end side, the seedlings were configured to be easily supplied to the seedling setting part to be supplied.

[0003]

Conventionally, since the seedling insertion port can be expanded only within the width of the partition wall, the seedling insertion port is not sufficiently wide, and the easy seedling supply cannot be achieved. It was An object of the present invention is to provide a seedling platform structure for a seedling transplanter that allows a seedling insertion port for supplying seedlings to the seedling platform to be sufficiently wide to facilitate seedling supply. An additional object of the present invention is to allow the seedling insertion port to be closer to the seedling supply side, or to automatically form the seedling insertion port wider, or to make it closer to the seedling supply side. is there.

[0004]

The features of the present invention are, in order to achieve the object, in the seedling placing base structure of the seedling transplanting machine described at the beginning, from the seedling placing base to the side opposite to the seedling planting device side. It has a guide bottom portion that extends and a pair of left and right guide sidewall portions that are located on the extension end side of the guide bottom portion, and guides the seedlings that are supplied toward the seedling placing portion by the pair of guide sidewall portions. The plurality of seedling supply guides for guiding the seedlings from the guide side wall to the center of the seedling placing table in the horizontal direction at the bottom and for guiding the seedlings from the guide side wall to the seedling placing portion by the plurality of guides. In each of the seedling placement section of, the at least one of the pair of guide side walls is attached so as to be switchable between a use position and a storage position, and when the guide side wall part is in the use position, the guide side wall parts are spread laterally outside of the guide bottom part. Then, a seedling insertion opening having a width wider than the width of the seedling placing portion is formed on the extension end side of the guide bottom portion, and when the storage position is reached, the seedling placement table is retreated inward in the lateral direction from the use position. It is characterized by doing.

[0005]

[Function] When the guide side wall is artificially switched from the storage position to the use position or automatically switched, the guide side wall expands to the lateral outside of the guide bottom, and the seedling insertion port wider than the lateral width of the seedling putting part. To form. At this time, for example, even when supplying seedlings to two adjacent seedling setting parts, after switching the guide side wall part of one of the seedling setting parts to the use position and supplying seedlings, this guide side wall part is set to the storage position. When using the seedling supply guide, such as switching the guide side wall of the one seedling setting part that remains after returning to the use position, if you use the guide side wall of the adjacent seedling supply guide to the storage position, Although the seedling supply guides also exist side by side due to the multiple seedling placement parts, the guide side wall to be used should not interfere with the guide side wall part of the adjacent seedling supply guide. However, the seedling insertion port of the seedling supply guide can be made wider than the conventional one, which can be expanded only within the width of the partition wall. Thereby, when supplying seedlings to a predetermined seedling setting part, using a large seedling insertion port of the seedling supply guide corresponding to this seedling setting part, as a seedling insertion port for supplying seedlings to the seedling setting part, It is possible to supply seedlings to a designated seedling placing part.

According to claim 2, when the seedlings are not supplied, the guide bottom is moved in the retreating direction so that the preliminary seedling storage device side and the seedling mounting table side do not come into contact with each other even if the body shakes. While making it possible to keep the seedling supply guide away from the seedling supply side, for example, by increasing the distance between the two, when the seedling supply is performed, the guide bottom is moved in the protruding direction and the seedling loading device is placed from the preliminary seedling storage device side. The seedling supply guide can be brought closer to the seedling supply side by, for example, narrowing the interval between the two so that the seedlings can be easily supplied to the stand side.

According to the third aspect, the seedling amount at the time when it is necessary to replenish the seedling seedlings is set as the set seedling amount. Then, when the amount of seedlings on the seedling loading table becomes small and it becomes necessary to replenish the seedlings, the guide side wall portion of the seedling supply guide is set to the use position because the guide control means is automatically operated based on the information from the seedling amount detection mechanism. The seedling supply status will be automatically.

According to the fourth aspect of the present invention, the seedling amount at the time when it is necessary to replenish the seedling seedlings is set as the set seedling amount. Then, when the amount of seedlings on the seedling placing table becomes small and it becomes necessary to replenish the seedlings, the guide bottom portion of the seedling supply guide moves in the protruding direction due to the automatic operation of the guide control means based on the information from the seedling amount detection mechanism. Moreover, the side wall of the guide is automatically put into the use position and the seedling is supplied.

[0009]

EFFECTS OF THE INVENTION Since seedlings can be supplied to the seedling setting part using a seedling insertion part wider than the lateral width of the seedling setting part, the seedlings can be easily inserted into the seedling insertion part so as not to protrude from the seedling setting part, and the desired seedling setting is performed. The seedlings can now be easily and accurately supplied to the area.

According to claim 2, while the seedling supply guide is normally kept away from the seedling supply side, at the time of seedling supply, the seedling insertion port of the seedling supply guide is brought close to the seedling supply side, and the seedling supply is performed also from the surface of this interval. Can be done easily.

According to the third aspect, the seedling supply guide automatically enters the seedling supply state when it becomes necessary to supply the seedlings easily and quickly without the trouble of switching the seedling supply guide to the seedling supply state. become able to.

According to the present invention, the seedling supply guide can be separated from the seedling supply side at normal times, but the seedling supply guide automatically enters the seedling supply state when the seedling supply is required. It becomes possible to easily and quickly supply seedlings without the trouble of switching to the seedling supply state.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIG. 1, a pair of left and right front wheels 1 and 2 for running and rear wheels 2 and 2 for running are provided so as to be drivable, and a driving part having an engine E and a spare seedling storage shelf part. 20
On the rear side of the self-propelled aircraft equipped with the preliminary seedling storage device A having
The seedling planting device 10 is connected so as to be able to move up and down through a vertically swingable link mechanism 3, and the link mechanism 3 is swingably operated by a lift cylinder 4, whereby the seedling planting device 1
0 is operated to move up and down, and rotational power of the engine E is transmitted from the self-propelled machine to the seedling planting device 10 by the rotary shaft 5. The seedling planting device 10 includes a plurality of seedling planting mechanisms 12, which are attached to a rear part of a planting machine body 11 formed of a transmission case and are arranged in a lateral direction of the machine body. Seedling placing table 13 for feeding seedlings to the seedling planting mechanism 12 while reciprocating to and from the planting machine body 1
1. A plurality of ground floats 14 attached to the bottom of the No. 1 and arranged in parallel in the lateral direction of the fuselage are provided.
The field mud is leveled by means of the method, and seedlings are planted at this leveled area by the seedling planting mechanism 12, and a plurality of rows of seedlings are planted. A fertilizer tank 15 located behind the seedling placing table 13, and a plurality of fertilizer application nozzles connected to the fertilizer tank 15 via a fertilizer feeding device 16 and arranged so that one fertilizer is located near each seedling planting mechanism 12. The fertilizer feeding device 16 feeds the granular fertilizer from the fertilizer tank 15 by a set amount, drops the fertilizer into the fertilizer application nozzle 17, and supplies the fertilizer nozzle 17 to the field mud near the seedling planting sites by the respective seedling planting mechanisms 12 by the fertilizer nozzle 17. A fertilizer application device configured to supply fertilizer is attached to the seedling planting device 10.
A light receiving sensor 8a, 8b for installing a laser device on a ridge or the like to receive a laser beam projected to perform elevation control, drive and stop control of the seedling planting device 10, and a front wheel 1 for receiving a laser beam. The self-propelled machine is equipped with the light receiving sensor 9 for controlling the direction, so that a predetermined work process is automatically planted and run, and the seedling planting device 10 is automatically lifted at the edge of the ridge to turn and run. A rice transplanter with a fertilizer application that can be guided by laser light is constructed.

As shown in FIG. 2 showing a part of the seedling placing table 13,
The seedling placing table 13 is the outermost lateral side of the plurality of seedling placing portions 13a arranged side by side in the machine lateral direction, the partition wall portion 13b located between a pair of adjacent seedling placing portions 13a, and the seedling placing portion 13a. The side wall portion 13c located laterally outside of the seedling placement portion 13a located in the above is provided, and the mat-shaped seedlings are attached in a tilted position that is located at a lower level on the rear side of the machine toward one end for supplying seedlings to the seedling planting mechanism 12. A partition wall portion 13b placed on a predetermined seedling placing portion 13a corresponding to the seedling planting mechanism 12 to be supplied and located on both sides of the seedling placing portion 13a, or a partition wall portion 13b and a side wall portion 13.
It is configured such that it is slidably guided by c and moved downward and supplied to the seedling planting mechanism 13.

As shown in FIGS. 2 and 3, the seedling placing table 1
A seedling supply guide 50 is provided on the upper end side of each of the plurality of seedling placement portions 13a in FIG. Any seedling supply guide 50
Is a guide bottom portion 51 made up of a guide plate 51 arranged on the upper surface side of the end portion of the seedling placing portion 13, and the guide bottom portion 51.
And a guide side wall portion 52a composed of a vertical side portion 52a of the bending plate 52 attached to the left and right sides of one end side of the. The guide bottom portion 51 slides in the direction in which the partition wall portions 13b located on both sides of the guide bottom portion 51 or the partition wall portions 13b and the side wall portions 13c serve as sliding guides with respect to the seedling placing portion 13. Fourth configured and attached across the back side of the guide bottom 51 and the seedling stand 13
The air cylinder C4 is configured to be slidable. The left and right guide side wall portions 52a are formed by the bending plate 5
2 is configured to swing with respect to the guide bottom portion 51 by rotation of a connecting pin 53 that is rotatably connected to the guide bottom portion 51, and is integrally rotatable with the connecting pin 53 of one bending plate 52. The attached operation link 54 is configured to swing by the fifth air cylinder C5 attached across the operation link 54 and the back side of the guide bottom portion 51, and is integrally rotated with the connecting pin 53 of the other bending plate 52. By interlocking the operation link 55, which is attached so that it is possible, with the operation link 54 by the interlocking rod 56, either the left or right guide side wall portion 52a is guided to the guide bottom portion 51 as shown by the seedling supply guide 50 located in the center in FIG. From the use position extending laterally outward from the use position, and as shown by the seedling supply guide 50 located laterally outside in FIG. By the fifth air cylinder C5 to a storage position to retire inwardly in a direction it is configured to be switched over. Then, as shown by the seedling supply guide 50 located at the center in FIG.
Is slidably operated in the protruding direction with respect to the seedling placing portion 13 to a mounting position where the portion connecting the guide side wall portions 52a extends from the seedling placing portion 13a toward the preliminary seedling storage device A, and the left and right guides are provided. When the side wall portion 52a is operated to the use position,
The seedling supply guide 50 enters the seedling supply state. Then, the left and right guide side wall portions 52a are formed on the extension end side of the guide bottom portion 51 with the seedling insertion port 50a of the seedling supply guide 50 having a trumpet shape whose width becomes wider toward the preliminary seedling storage device side. The width L1 at the re-tip of 50a is
The lateral width L2 of the seedling placing portion 13a, that is, the partition wall portion 13
b spacing, or the partition wall portion 13b and the side wall portion 1
It is formed wider than the interval of 3c. As a result, the seedling supply guide 50 in the seedling supply state has the auxiliary seedling W supplied from the seedling supply section 40 of the auxiliary seedling storage device A as shown in FIGS. 1 and 6 on the extension end side of the guide bottom portion 51. It is received and guided by the left and right guide side wall parts 52a so as to descend toward the center of the guide bottom part 51 in the lateral direction of the seedling placing table, and the preliminary seedling W from the guide side wall part 52a is lowered by the guide bottom part 51 into the seedling placing part 13a. Guide you to do so. As shown by the seedling supply guides 50 located on both sides in FIG. 2, the guide bottom 51 is slid in the retracting direction with respect to the seedling placing portion 13a, and the guide side wall 52a is connected to the guide. When the bottom portion is set to the mounting position closer to the seedling placing portion 13a than in the seedling supplying state and the left and right guide side wall portions 52a are operated to the storage position, the seedling supplying guide 50 is in the storage state. Then, when the guide side wall portion 52a of the adjacent seedling supply guide 50 does not contact the guide side wall portion 52a when switching to the use position, the adjacent seedling supply guide 50 can be in the seedling supply state.

As shown in FIGS. 2 and 3, the seedling placing table 1
The third detection switch S3 is provided on the back side of each of the plurality of seedling seedling portions 13a, and the mat-like seedlings placed on the seedling seedling surface portion 13a are consumed so that the upper end side of the matt seedlings is set as the seedling seedling portion 13a. When the mat-shaped seedling is lowered to the position, the mat-shaped seedling is disengaged from the operation portion of the third detection switch S3, and the state where the third detection switch S3 is pressed by the mat-shaped seedling is switched to the state where the pressing operation is released. The third detection switch S3 can detect that the seedling amount of the seedling placing portion 13a has decreased to the set seedling amount. As shown in FIG. 4, all the third detection switches S
3 is linked to the guide control means 57, and this guide control means 57 controls all the control valves 58 of the fourth air cylinders C4 and all the fifth air cylinders C5.
Of the control valve 59. The guide control means 57 comprises a microcomputer and processes the information from the third detection switch S3 to determine whether the third detection switch S3 is in the non-detection state or the detection state. When it is determined that the third detection switch S3 is in the non-detection state, the seedling placing portion 13 corresponding to the detection switch S3 is placed.
It is judged that the seedling amount of a has not decreased to the preset seedling amount that has been preset as requiring seedling supplementation,
A predetermined signal is output to the control valve 58 of the fourth air cylinder C4 and the control valve 59 of the fifth air cylinder C5 corresponding to this seedling placing portion 13a to automatically operate both air cylinders C4 and C5 to the guide storing side. By doing so, the guide side wall portion 52a is automatically operated on the storage side and the guide bottom portion 51 is operated on the retracted side, and the seedling supply guide 50 is maintained and operated in the storage state. When the guide control unit 57 determines that the third detection switch S3 is in the detection state, this detection switch S3
It is judged that the seedling amount of the seedling placing portion 13a corresponding to the above has reached the set seedling amount required for seedling supply, and this seedling placing portion 1
Outputting a predetermined signal to the control valve 58 of the fourth air cylinder C4 and the control valve 59 of the fifth air cylinder C5 corresponding to 3a to automatically operate both air cylinders C4, C5 to the seedling supply guide use side. Thus, the guide side wall portion 52a is automatically operated on the use side and the guide bottom portion 51 on the projecting side, and the seedling supply guide 50 is automatically switched to the seedling supply state. In addition, the two seedling placement portions 13a located adjacent to each other become the remaining amount of seedlings required for seedling supply at the same time,
When the third detection switches S3 of the plurality of seedling placing portions 13a arranged in series are in the detection state of the set seedling amount, the guide control means 57 causes the seedlings of one of the two seedling placing portions 13a. The supply guide 50 is first switched to the seedling supply state to perform seedling supply, and then the seedling supply guide 50 is returned to the storage state and then the seedling supply guide 50 of the remaining one seedling set portion 13a is supplied. Select the seedling supply guides 50 of the plurality of seedling seedling portions 13a so that the seedling supply guides 50 of the two adjacent seedling seedling portions 13a, 13a do not enter the seedling supplying state at the same time, such as switching to the state, and , Switch operation with a time difference.

As shown in FIG. 1, the reserve seedling storage device A includes the reserve seedling accommodation shelf portion 20 attached to the body frame 6 of the self-propelled aircraft via the support base 7, and the reserve seedling accommodation shelf portion 20.
The seedling receiving section 30 arranged on the front side of the seedlings and the seedling replenishing section 40 arranged on the rear side of the preliminary seedling accommodation shelf section 20 of a seedling supply device (not shown) installed outside the field such as a ridge. The spare seedling W that has entered the seedling transfer case K from the conveyor mechanism B is received by the seedling receiving portion 30, and this spare seedling W is automatically stored and stored in the spare seedling storage shelf 20 by the seedling supply portion 40, and the spare seedling is stored. The preliminary seedling W stored in the storage shelf 20 is automatically supplied to the seedling placing table 13 of the seedling planting device 10 by the seedling supply unit 40, and the seedling transfer case K emptied by the seedling supply is seeded in the seedling receiving unit 30. It is returned to the seedling feeding device, and in detail, it is configured as follows.

The spare seedling storage shelf 20 is provided with a large number of shelf boards 22 attached to the shelf frame 21 side by side in the horizontal and vertical directions of the self-propelled machine, and by mounting the seedling transfer case K on this shelf board 22. The auxiliary seedling W is accommodated and the empty seedling transfer case K is accommodated. Seedling transfer case K
Is formed so as to accommodate the preliminary seedling W together with the seedling putting plate P as shown in FIG.

As shown in FIG. 1, the seedling receiving section 30 is arranged in such a manner that its rear end side is inserted into the shelf frame of the preliminary seedling accommodation shelf section 20 and is attached to the support base 7 in two stages of upper and lower belt conveyor devices. 31, 32 and this belt conveyor device 31,
It is configured by a conveyor connecting device 33 arranged on the front side of the machine body of 32 and attached to the support base 7. The conveyor connecting device 33 connects the leading end side of the conveyor mechanism B, and the conveyor mechanism B connects the conveyor connecting device 3
When connected to 3, the belt conveyor devices B1 and B2 at the two upper and lower stages of the conveyor mechanism B and both belt conveyor devices 31 and 32 of the seedling receiving section 30 are connected so that the seedling transfer case K can be delivered, and the seedling receiving section is connected. The belt conveyor device 31 on the upper side of 30 receives the transfer case K containing seedlings from the belt conveyor device B1 on the upper side of the conveyor mechanism B and sends it to the seedling supply table 41 of the seedling supply unit 40 as shown in FIG.
The lower belt conveyor device 32 of the seedling receiving section 30 sends the empty seedling transfer case K from the seedling supply table 41 to the lower belt conveyor device B1 of the conveyor mechanism B.

As shown in FIGS. 5 and 6, the seedling supply section 4
0 is an operation that enables the seedling supply table 41 and the shelf frame 21 of the preliminary seedling accommodation shelf 20 to support the seedling supply table 41 and moves the seedling supply table 41 and changes the posture thereof. And the mechanism F.

In the seedling supply table 41, the seedling transfer case K is received and supported by the bottom plate portion 41a, and is locked by the side wall portion 41b and the locking claw 42 which can be engaged and disengaged by the air cylinder C1 so as not to fall off. Thus, the spare seedling W is supported and the empty seedling transfer case K is supported.

The operation mechanism F receives the seedling supply table 41 from the belt conveyor device 31 to receive the seedling-containing transfer case K and approaches the seedling receiving portion 30 so as to send an empty seedling transfer case K to the belt conveyor device 32. The rear side of the machine body of the spare seedling storage shelf 20 is moved laterally and in the machine body so as to operate or to put the seedling-containing or empty seedling transfer case K into and out of a predetermined shelf plate 22 of the spare seedling storage shelf 20. In addition to moving vertically, it is moved in and out of the preliminary seedling storage shelf 20, and further, the front side of the seedling placing table 13 is moved laterally so as to supply seedlings to the plurality of seedling placing portions 13a of the seedling placing table 13. The dump truck is operated as well as dumped, and is configured as shown in FIGS.

That is, the shelf frame 21 of the spare seedling accommodation shelf 20.
The first frame 43 is slidably attached to the pair of upper and lower guide rails 23 and 24 supported by the first frame 4
A second frame 45 is slidably attached to a guide rail 44 supported by 3, and a seedling supply table 41 is swingably attached to a third frame 46 slidably attached to the second frame 45 in the machine longitudinal direction. Supporting fourth frame 4
7 is mounted slidably in the longitudinal direction of the machine. Then, the first electric motor M1 attached to the upper end portion of the first frame 43 drives the feed mechanism G1 including a pinion gear and a rack gear, which is interlocked with the motor M1 to drive the first electric motor M1.
By moving the frame 43 back and forth in the lateral direction of the machine body along the guide rails 23, 24, the seedling supply table 4
Move 1 in the lateral direction of the machine. By moving the second frame 45 along the guide rails 44 in the vertical direction of the machine body by an electric feed mechanism (not shown) located between the first frame 43 and the second frame 45, the seedling supply table 41 Move the machine up and down. A second electric motor M2 attached to the second frame 45 drives a feed mechanism G2 that is composed of a pinion gear and a rack gear that is interlocked with the motor M2 to drive the third frame 46 to the second frame.
It is slid in the machine front-rear direction with respect to the frame 45, and the fourth frame 47 is slid in the machine front-rear direction with respect to the third frame 46 by the second air cinder C2 attached across the third frame 46 and the fourth frame 47. Thus, the seedling supply table 41 is operated to move in the machine front-rear direction. The seedling supply table 41 is swung up and down by the third air cylinder C4 attached across the fourth frame 47 and the seedling supply table 41. Then, the seedling supply table 41 dumps the preliminary seedling W from the seedling transfer case K and drops and supplies it to the seedling supply guide 50 of the seedling placing table 13.

As shown in FIG. 5, a first detection switch S1 and a second detection switch S2 are provided inside the spare seedling storage shelf 20 in association with each of a large number of shelves 22, and each first detection switch S1 is , The seedling transfer case K stored in the shelf 22
The presence or absence of the seedling transfer case K on the shelf board 22 is detected depending on whether or not the shelf board 22 contacts each other.
Shelf board 2 depending on whether or not it contacts the preliminary seedling W housed in
2 is configured to detect the presence or absence of the preliminary seedling W. A micro that automatically operates the air cylinders C1 to C3, the electric motors M1 and M2, and the electric feed mechanism based on the information from the detection switches S1 and S2 and the detection switch S3 of the seedling placing table 13. By providing the operation mechanism F with a control mechanism made of a computer, when the seedling amount of any one of the seedling placing portions 13a of the seedling placing table 13 decreases to the set amount, the seedling supplying portion 40 automatically operates. With the seedling supply table 41, the spare seedling storage shelf 20
The transfer case K containing seedlings is taken out from the shelf 22 on which the spare seedlings W of FIG.
Is dropped and supplied to the seedling supply guide 50 in the seedling supply state, and the empty seedling transfer case K is returned to the original shelf board 22. Then, as the seedling receiving section 30 receives the seedling-containing transfer case K, the seedling supply section 40 automatically operates, and the seedling supply table 41 stores the empty seedling transfer case K in the spare seedling storage shelf section 20. The empty transfer case K is taken out from the existing shelf 22 and sent to the belt conveyor device 32 on the lower side of the seedling receiving section 30, and the transfer case K containing seedlings is received from the belt conveyor device 31 on the upper stage to receive a spare seedling accommodation shelf. Store in 20 empty shelves 22.

That is, when seedlings are still sufficiently present in all of the plurality of seedling placing portions 13a of the seedling placing table 13, during this period, the guide control means 57 based on the information from the third detection switch S3 is used. Due to the automatic operation, the seedling supply guides 50 of all the seedling putting portions 13a are in the storage state. Then, the guide bottom portion 51 is located on the retreat side with respect to the seedling placing portion 13a, and the seedling supply guide 50 is closer to the seedling placing table 13 than in the seedling supplying state. Therefore, the seedling supply guide 50 and the seedling supply table 41 can travel with a large distance therebetween so that the seedling supply guide 50 and the seedling supply table 41 do not easily interfere with each other even if the seedling supply table 41 or the seedling placement table 13 shakes due to traveling vibration or the like. When the seedlings in at least one of the plurality of seedling placement portions 13a of the seedling placing table 13 decrease to the set seedling amount required for seedling supply, automatic operation by the guide control means 57 based on the information from the third detection switch S3. Therefore, the seedling supply guide 50 of the seedling placing section 13a is automatically switched from the stored state to the seedling supply state, and the seedling supply section 40 automatically controls the seedling supply table 41. Preliminary seedling W is taken out from the spare seedling accommodation shelf 20 and dropped and supplied to the seedling supply guide 50 in the seedling supply state, whereby a predetermined seedling placement portion 13 to be supplied.
The seedling is supplied to a. At this time, the seedling insertion opening 50a of the seedling supply guide 50 having a larger width than the seedling insertion portion 13a is used as a seedling insertion opening for supplying seedlings to the seedling insertion portion 13a, and the seedling insertion opening 50a is used as the seedling supply table 41.
Is approaching. As a result, the preliminary seedling W from the seedling supply table 41 is accurately supplied to the insertion port 50a of the seedling supply guide 50 so as not to protrude therefrom, and is surely supplied to the predetermined seedling placement portion 13a.

The light-receiving sensor 8a is used by a moving mechanism composed of a pinion gear and a rack gear driven by an electric motor M3 shown in FIG. It is configured so that it can be switched to a storage position in which the upper part of the conveyor coupling device 33 is opened by retracting to the upper position.

[Other Embodiment] As the seedling supply guide, a fixed type in which the guide bottom portion 51 is fixed to the protruding side and only the guide side wall portion 52a is movable may be adopted. Also in this case, when the guide side wall portion 52a of one of the two adjacent seedling supply guides is moved to the lateral outer side of the guide bottom portion, the guide side wall portion 5 of the other seedling supply guide is moved.
When 2a is set to the storage position, that is, the seedling supply guides of the consecutively placed seedling placing sections are selectively operated with a time lag without operating the seedling supply guides to the seedling supply state at the same time. When the method of use is adopted, the guide side wall can be expanded laterally outside the guide bottom while not interfering with that of the adjacent seedling supply guide, and a seedling insertion port having a large width can be formed, thereby achieving the object of the present invention. Also,
The guide side wall part is configured to switch between a use position that spreads laterally outside the guide bottom part by sliding movement and a storage position that retracts inward, or a pair of left and right guide side wall parts of one seedling supply guide. The same applies to a case where one of the guide side wall parts is fixed and the other guide side wall part is movable. Therefore, instead of the above-described embodiment, the guide bottom portion 51 is fixed,
The guide side wall may be movable, or the guide side wall may be slidable. Further, the guide bottom portion is configured to move in a projecting direction and a retreating direction with respect to the seedling placing portion by sliding, and to move in a projecting direction and a retracting direction with respect to the seedling placing portion by swinging. It may be configured and implemented.

Instead of the third detection switch S3, various detection means such as a sensor mechanism composed of a light projector and a light receiver may be adopted, and these are collectively referred to as a seedling amount detection mechanism S3.

The present invention can also be applied to the case where the preliminary seedling storage device is not provided, or even if it is provided, it is not an automatic supply type and the seedlings are manually supplied to the seedling placing table. Therefore, in addition to the seedling transplanter capable of unmanned operation, the present invention can be applied to a walking type in which an operator drives while following and walking, and a riding type in which a worker rides on board.

The present invention can be applied not only to rice planting machines but also to machines for planting vegetable seedlings and rush seedlings. Therefore, these are collectively called transplanters.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of the whole rice transplanter with fertilizer application

[Figure 2] Partial plan view of the seedling stand

[Figure 3] Sectional view of the seedling stand

[Figure 4] Block diagram of seedling supply guide control

FIG. 5 is a sectional view of the preliminary seedling storage device.

FIG. 6 is a sectional view of the seedling supply section.

[Explanation of symbols]

 12 Seedling planting mechanism 13 Seedling stand 13a Seedling placement part 13b Partition wall part 50 Seedling supply guide 50a Seedling insertion port 51 Guide bottom part 52a Guide side wall part 57 Guide control means L1, L2 Width

Claims (4)

[Claims] 1. A plurality of seedling placement parts (13a) each having a plurality of seedling planting mechanisms (12) arranged side by side in the machine body, and seedlings to be supplied to these seedling planting mechanisms (12) are arranged side by side in the machine body lateral direction. ), A pair of seedling placement portions (13a, 13a) adjacent to each other among the plurality of seedling placement portions (13a)
A seedling mount structure of a transplanter equipped with a seedling mount (13) having a partition wall portion (13b) located between them, which is opposite to the seedling planting device side from the seedling mount (13). And a pair of left and right guide side wall portions (52a), (52a) located on the extended end side of the guide bottom portion (51).
a) seedlings supplied toward the guide bottom part (5) by the pair of guide side wall parts (52a), (52a).
1) The seedlings are guided so as to descend toward the center in the lateral direction of the seedling placing table, and the seedlings from the guide side wall portion (52a) are descended to the seedling placing portion (13a) by the guide bottom portion (51). A seedling supply guide (50) for guiding is provided in each of the plurality of seedling placement portions (13a), and at least one of the pair of guide side wall portions (52a), (52a) is switched between a use position and a storage position. While being freely attached, when the guide side wall portion (52a) is in the use position, it spreads laterally outside the guide bottom portion (51) and is wider than the lateral width (L2) of the seedling placing portion (13a) (L1). Seedling insertion port (50a) is formed on the extension end side of the guide bottom part (51), and when the storage position is reached, the seedling mounting base of the transplanter retreats inward in the lateral direction from the use position. Construction. 2. The pair of guide side wall portions (52a),
(52a) is attached to the extending end side of the guide bottom (51), and the guide bottom (51) is attached to the seedling placing part (13).
The seedling table structure of the transplanter according to claim 1, wherein the seedling mounting table structure is attached so as to be movable with respect to a) in an outgoing / retracting direction. 3. A guide control means (57) for switching the guide side wall (52a) of each of the plurality of seedling supply guides (50a) between a use position and a storage position, and a plurality of seedling placement portions (13a). ) A seedling amount detecting mechanism (S3) for detecting each seedling amount is provided, and when the seedling amount detecting mechanism (S3) is in a non-detection state, the guide control means (57) causes the seedling amount detecting mechanism (S3). ), The guide side wall part (52a) of the seedling supply guide (50) in the seedling placement part (13a) corresponding to the seedling amount detection mechanism (S3) in the non-detection state is set to the storage side. When the automatic operation is performed and the seedling amount detecting mechanism (S3) detects the set seedling amount, the guide control means (5)
7) based on the information from the seedling amount detecting mechanism (S3), the seedling supply guide (5) in the seedling setting part (13a) corresponding to the seedling amount detecting mechanism (S3) in the detection state.
The guide control means (57) is linked to the plurality of seedling amount detection mechanisms (S3) in a state in which the guide side wall portion (52a) of 0) is automatically operated to the use side. The seedling platform structure of the transplanter described. 4. The plurality of seedling supply guides (5) are operated by switching the guide side wall (52a) of each of the plurality of seedling supply guides (50) between a use position and a storage position.
0) Guide control means (57) for moving and operating the respective guide bottom portions (51) in the outgoing and retracting directions, and a seedling amount detecting mechanism (S3) for detecting the seedling amount of each of the plurality of seedling placing portions (13a). Along with preparation, this seedling amount detection mechanism (S3)
Is in the non-detection state, the guide control means (57), based on the information from the seedling amount detection mechanism (S3), the seedling placement section corresponding to the seedling amount detection mechanism (S3) in the non-detection state. The guide side wall part (52a) of the seedling supply guide (50) in (13a) is automatically operated on the storage side and the guide bottom part (51) is retracted, and the seedling quantity detection mechanism (S3) is operated. When the set seedling amount is detected, the guide control means (57) causes the seedling amount detection mechanism (S3).
Based on the information from the above, the guide side wall portion (52a) of the seedling supply guide (50) in the seedling placement portion (13a) corresponding to the seedling amount detection mechanism (S3) in the detection state.
The guide control means (57) is linked to the plurality of seedling amount detecting mechanisms (S3) in a state in which the guide bottom portion (51) is automatically operated to the projecting side on the use side. Transplanter seedling platform structure.