JP2023092310A - Sulky rice transplanter - Google Patents

Abstract

To improve operability of second and third reserve seedling trays to storage attitudes in a sulky rice transplanter including first, second and third reserve seedling trays.SOLUTION: A sulky rice transplanter includes: a first reserve seedling tray 11 supported by support frames 16 and 17; a second reserve seedling tray 12 capable of changing an attitude between a work attitude A11 and a storage attitude A21 around a first support shaft core P11 along the horizontal direction of a front part of the first reserve seedling tray 11; and a third reserve seedling tray 13 capable of changing an attitude between a work attitude A12 and a storage attitude A 22 around a second support shaft core P21 along the horizontal direction of a rear part of the first reserve seedling tray 11. At least one of the storage attitude A21 and the storage attitude A22 is set to an attitude closer to the work attitude A11 and the work attitude A12 than an attitude where the second and third reserve seedling trays are stacked on the first reserve seedling tray 11.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a ride-on rice transplanter provided with a stand for placing a spare seedling on the front part of the machine body.

In the riding rice transplanter disclosed in Patent Document 1, a support frame provided in the front part of the machine body supports a first spare seedling placing stand, and a second spare seedling placing stand serves as the first spare seedling placing stand. A seedling mount is foldably supported at the front and a third spare seedling mount is foldably supported at the rear of the first seedling mount.

When the spare seedling mount is not used, such as when moving, the third spare seedling mount is folded and stacked on the first spare seedling mount, so that the third spare seedling mount is operated to the retracted posture. . The second spare seedling mount is operated to the storage posture by folding the second spare seedling mount and stacking it on the third spare seedling mount.

Japanese Patent Application Laid-Open No. 2013-31

In Patent Document 1, the operation to put the second and third spare seedling trays into the retracted posture is an operation to rotate both the second and third spare seedling trays by 180 degrees. There is room for improvement.
SUMMARY OF THE INVENTION An object of the present invention is to improve the operability of a riding rice transplanter provided with first, second and third spare seedling mounts for storing the second and third spare seedling mounts.

The riding rice transplanter of the present invention comprises: a support frame provided in the front part of the body; a first working posture extending forward from a front portion of the first preliminary seedling placing table so as to be continuous with the first preliminary seedling placing table around a first support axis along the A second spare seedling mount supported on the front part of the first spare seedling mount so as to be changeable from the front part of the first preliminary seedling mount to the first storage position folded upward. and a second support shaft along the left-right direction at the rear of the first preliminary seedling loading table, from the rear of the first preliminary seedling loading stage so as to be connected to the first preliminary seedling loading stage. The first spare seedling mount is changeable between a second working posture extending rearward and a second storage posture folded upward from the rear portion of the first spare seedling mount. A third spare seedling loading table supported on the rear part of the table is provided, and at least one of the first storage posture and the second storage posture is set to the second loading seedling loading table and the second seedling loading table. 3 is set to a posture closer to the first working posture and the second working posture than the posture in which the third spare seedling placing stand is stacked on the first spare seedling placing stand.

According to the present invention, when the first, second, and third spare seedling trays are folded, even if the third spare seedling tray is operated to the storage position stacked on the first preliminary seedling tray, the second seedling tray can be folded. The spare seedling loading table does not have to be operated so that the seedlings are stacked on the third preliminary seedling loading stage, and may be operated in a retracted posture close to the working posture.
Alternatively, even if the second spare seedling plate is operated to the storage posture in which it is stacked on the first spare seedling plate, the third preliminary seedling plate is in the posture stacked on the second spare seedling plate. You don't have to operate it in a straight line, you just need to operate it in a retracted posture that is close to the working posture.
Alternatively, the second and third spare seedling trays do not have to be operated in a posture stacked on the first spare seedling tray, and the second spare seedling tray is operated in a retracted posture close to the working posture. It is sufficient to operate the third spare seedling tray to a storing posture close to the working posture.

In this case, the storage position in which the second and third spare seedling placement stands are folded upward means that the angle between the first and second (third) spare seedling placement stands is a predetermined angle (for example, 90 degrees), and the entire second (third) spare seedling loading table is not stacked on the first preliminary seedling loading stage, and the second (third) preliminary seedling loading stage is stacked on the first preliminary seedling loading stage. It includes an attitude facing upward from the preliminary seedling mount, and includes an attitude in which the entire second (third) preliminary seedling mount is stacked above the first preliminary seedling mount.

According to the present invention, in a riding-type rice transplanter equipped with first, second, and third spare seedling mounts, both the second and third spare seedling mounts are rotated 180 degrees to form the first spare seedling mount. Since there is no need to stack the seedlings on the stand, the operability of the second and third spare seedling placing stands can be improved.

In the present invention, the first storing posture is set to a posture standing from the first spare seedling placing table rather than the second storing posture, and the second storing posture is set to the first storing posture. It is preferable that the position is set to be closer to the first preliminary seedling loading table than the above.

A riding rice transplanter is often provided with a driver's seat at the rear of the machine body, and workers often get on and off from the rear side of the machine body. In this case, if the third spare seedling placing table is operated to the working posture, the third spare seedling placing table may interfere with getting on and off of the operator. On the other hand, the second spare seedling loading table does not affect the getting on and off of the worker so much.

According to the present invention, by focusing on the fact that the second spare seedling loading table does not affect the getting on and off of the worker so much, the stored posture of the second spare seedling loading table can be changed to that of the third preliminary seedling loading table. Since the position is set to stand up from the first spare seedling loading table rather than the stored posture, there is no need to move the second spare seedling loading stage towards the first spare seedling loading stage (storage posture). good.

According to the present invention, the storage posture of the third spare seedling loading table is set closer to the first spare seedling loading stage than the storage posture of the second preliminary seedling loading stage, and the third preliminary seedling loading stage is arranged. The placing table is largely moved toward the first spare seedling placing table (stored posture).
As a result, the third preliminary seedling rest is less likely to interfere with the operator's getting on and off, and the driver's getting on and off can be improved.

In the present invention, the angle between the second spare seedling loading base and the first spare seedling loading base in the first storage posture in a side view is smaller than a right angle. A first storage posture is set, and an angle in a side view between the third spare seedling placement base and the first spare seedling placement base in the second storage posture is an angle smaller than a right angle. It is preferable that the second retracted posture is set so as to

According to the present invention, when the second spare seedling loading table is operated to the storing posture, the second spare seedling loading table moves toward the first spare seedling loading table, so that it is operated to the storage posture. It is less likely that the second spare seedling loading table will be erroneously moved to the working posture.
According to the present invention, when the third spare seedling loading table is operated to the storage posture, the third spare seedling loading table moves toward the first spare seedling loading table, so that it is operated to the storage posture. It is less likely that the third spare seedling loading table will be erroneously moved to the working posture.

In the present invention, one of the second preliminary seedling placing table and the third preliminary seedling placing table is supported around one of the first support shaft core and the second support shaft core so that the posture can be changed, provided on the first spare seedling placing table so as to be movable forward or rearward from one of the front part and the rear part of the first spare seedling placing table; A front-rear support part is provided that can change its attitude upward with respect to the first spare seedling placement table in a state of being moved forward or backward from one of the rear parts, and the second spare seedling placing table and the second preliminary seedling placing table are provided. A position in which the other of the 3 spare seedling mounts is stacked above the first spare seedling mount over the entirety of the other of the second spare seedling mount and the third spare seedling mount. By operating the front and rear support parts to move one of the front and rear sides and changing the attitude upward, one of the second spare seedling placing table and the third spare seedling placing table can be changed. , the second preliminary seedling placement is operated to a position stacked on the first preliminary seedling placement over the entirety of one of the second preliminary seedling placement and the third preliminary seedling placement. It is preferably stackable above the other of the platform and said third preliminary seedling platform.

According to the present invention, when one of the second and third spare seedling mounts is operated to a posture stacked on the first spare seedling mount, the other of the second and third spare seedling mounts is It can be manipulated into a stacked position on one of the second and third spare seedling mounts.
This state is suitable for transporting the riding rice transplanter on the bed of a truck, or for storing the riding rice transplanter in a warehouse or the like. This is advantageous in terms of improving the ease of getting in and out of the operator, since the third spare seedling loading table does not hinder the getting on and off of the operator.

According to the present invention, one of the second and third preliminary seedling mounts is manipulated into a position stacked on the other of the second and third preliminary seedling mounts stacked on the first preliminary seedling mount. In this case, the front and rear support parts are moved forward (rearward) from the first preliminary seedling mount together with one of the second and third preliminary seedling mounts, and the front and rear support parts are moved to the second and third auxiliary seedling mounts. Operate upwards with one side of the platform.

As a result, the position of the first support axis (second support axis) of the front and rear support portions is substantially the same as the other of the second and third spare seedling places stacked on the first spare seedling place. It can be positioned at height (or slightly higher).
By operating one of the second and third preliminary seedling mounts rearward about the first support axis (second support axis), one of the second and third preliminary seedling mounts is moved to the first seedling mount. The second and third spare seedling trays stacked on the second and third spare seedling trays can be operated without difficulty.

In the present invention, a front holding portion capable of holding and releasing the second spare seedling placement table operated to the first storage posture protrudes upward from the first spare seedling placement table of the support frame. A post-holding part provided in the support frame and capable of holding and releasing the third spare seedling placement table operated to the second storage posture extends upward from the first spare seedling placement table of the support frame. It is preferable that it is provided in the portion where the

According to the present invention, when the second spare seedling platform is operated to the first storage posture, the front holding portion can hold the second spare seedling platform in the first storage posture. The certainty of holding the 2 spare seedling placement table in the first storage posture is increased.
When the third spare seedling placing table is operated to the second storage position, the rear holding section can hold the third spare seedling placing table in the second storing position. The reliability of holding the platform in the second retracted position is increased.

According to the present invention, the front support part and the rear support part are provided in the portion of the support frame protruding upward from the first preliminary seedling rest, and the support frame, which is an existing member, is provided with the front support part and the rear support part. Since it is also used as a support member for the part, it is advantageous in terms of structural simplification.

In the present invention, the front-to-rear length of one of the second preliminary seedling loading table and the third preliminary seedling loading table is the same as that of the other of the second preliminary seedling loading table and the third preliminary seedling loading table. It is preferable if it is set to be shorter than the length.

In the riding rice transplanter, when the second spare seedling loading table is operated to the working posture, the second spare seedling loading stage may protrude forward from the front end of the machine body. If the second spare seedling mount protrudes forward from the front end of the machine body, the second spare seedling mount may interfere with turning when turning the machine near an obstacle such as a ridge. .

According to the present invention, when the front-to-rear length of the second preliminary seedling loading table is set to be shorter than the front-to-back length of the third preliminary seedling loading table, the front-to-back length of the second preliminary seedling loading table is compared. Since the second seedling tray is relatively short, even if the second auxiliary seedling tray is operated to the working posture, the second auxiliary seedling tray hardly protrudes forward from the front end portion of the machine body.
As a result, when turning the machine body near obstacles such as ridges, the second spare seedling mounts are less likely to interfere with turning, which is advantageous in terms of improving the maneuverability of the machine body.
According to the present invention, when the front-to-rear length of the third spare seedling loading table is set to be shorter than the front-to-back length of the second preliminary seedling loading table, the third preliminary seedling loading table allows the worker to get on and off. This is advantageous in terms of improving the ease of getting in and out of the operator because it will be less of a hindrance.

In the present invention, the fuel tank is provided on the machine body so as to be positioned below the third preliminary seedling rest operated in the second working posture, and the third preliminary seedling rest is the above-mentioned. It is preferable that the third preliminary seedling mount is provided with a protective portion that covers the upper side of the fuel tank when the seedling is operated in the second working posture.

In the riding rice transplanter, when the fuel tank is provided at the rear part of the machine body, the fuel tank may be positioned below the third preliminary seedling rest operated to the working posture. In this state, when the seedling is placed on the third preliminary seedling mount, it is conceivable that the soil, water, etc. of the seedling may drop and adhere to the fuel tank.

According to the present invention, the protective part is provided on the third preliminary seedling loading table, and when the third preliminary seedling loading stage is operated to the working posture, the protective part covers the upper side of the fuel tank. Even if soil, water, etc. falls from the seedlings placed on the preliminary seedling mount, the soil, water, etc. are less likely to adhere to the fuel tank.

In the present invention, a floor provided on the fuselage and a step provided on the rear portion of the fuselage and arranged at a position higher than the floor are provided, and the third working posture is operated to the second working posture. A support portion for supporting the rear portion of the spare seedling placing table is provided in the step, and the third spare seedling placing table is engaged with the supporting portion by being operated to the second working posture, and the It is preferable that an engaging portion for determining the position of the third spare seedling placing table in the front-rear direction is provided on the third spare seedling placing table.

In the riding rice transplanter, a step arranged at a position higher than the floor is sometimes provided at the rear part of the machine body. Workers often stand on steps to replenish seedlings to the seedling planting device supported at the rear of the machine.

According to the present invention, the rear part of the third preliminary seedling loading base is supported by the supporting portion of the step by operating the third preliminary seedling loading base to the working posture.
As a result, the front portion of the third preliminary seedling loading table is supported by the first preliminary seedling loading table, and the rear portion of the third preliminary seedling loading table is supported by the supporting portion of the step. Even if a large number of seedlings are placed on the placing table, the third spare seedling placing table is stably supported in the working posture.

According to the present invention, the rear part of the third spare seedling placing table is supported by the supporting portion of the step by operating the third spare seedling placing table into the working posture, and the third spare seedling placing table is supported by the support portion of the step. The engaging portion of the seedling mount engages the supporting portion of the step.
As a result, the position of the third spare seedling loading table in the front-rear direction is determined, so that the third preliminary seedling loading table is stably supported in the working posture.

In the present invention, it is preferable that a position adjusting portion is provided which can adjust the mounting position of the first preliminary seedling mount on the support frame in the front-rear direction.

According to the present invention, by adjusting the mounting position of the first spare seedling rest on the support frame in the front-rear direction, the position of the third spare seedling rest in the working posture can be adjusted in the front-rear direction. When the third spare seedling placing table is operated to the working posture, the engaging portion of the third spare seedling placing table can be set to engage with the supporting portion of the step without coming off.

In the present invention, a stepping detection unit that detects a worker's stepping on and off the floor, and based on the detection of the stepping detection unit, the seedlings are stacked in the second storage posture or on the first spare seedling platform. Preferably, the posture is provided with a retraction mechanism for automatically operating said third spare seedling rest.

A riding rice transplanter is often provided with a driver's seat at the rear of the machine body, and workers often get on and off from the rear side of the machine body. In this case, if the third spare seedling placing table is operated to the working posture, the third spare seedling placing table may interfere with getting on and off of the operator.

According to the present invention, when an operator tries to get on and off, the operator's getting on and off is detected, and the third spare seedling placing table is automatically operated to the retracted posture or the posture stacked on the first spare seedling placing stand. As a result, the third spare seedling tray does not interfere with the operator's getting on and off, and the operator's getting on and off can be improved.

It is a left side view of a riding rice transplanter. It is a top view of a riding rice transplanter. It is a left side view near a support frame and a 1st, 2nd, and 3rd preliminary seedling mounting stand. It is a left side view of the 1st, 2nd, and 3rd preliminary seedling mounting stand. Fig. 2 is a plan view of a first preliminary seedling placing table; It is a left side view of a 1st preliminary seedling mounting stand. It is a perspective view of the frame of a preliminary seedling stand. It is a left side view near the frame of a support frame and a 1st preliminary seedling rest. It is an exploded perspective view of the support roller of a preliminary seedling stand, one bearing part, and a frame. It is a longitudinal front view of the vicinity of the supporting rollers, one bearing portion, and frame of the preliminary seedling placing table. It is a cross-sectional plan view near the support roller of a preliminary seedling stand, one bearing part, and a frame. It is a longitudinal front view near the support roller of a preliminary seedling stand, the other bearing part, and a flame|frame. It is a top view of a 2nd preliminary seedling mounting stand. It is a longitudinal side view of a 2nd preliminary seedling mounting stand. It is a top view of a 3rd preliminary seedling mounting stand. It is a left side view of a 3rd preliminary seedling mounting stand. It is a perspective view of the vicinity of the rear part of the left 3rd preliminary seedling rest (working posture) and the left front part of a step. It is a vertical cross-sectional side view of the vicinity of the rear portion of the right third preliminary seedling loading table (working posture) and the right front portion of the step. FIG. 11 is a left side view of the first, second, and third preliminary seedling placing stands in the first alternative embodiment of the invention; FIG. 20 is a left side view of the first, second, and third preliminary seedling stands in the sixth alternative embodiment of the invention; FIG. 20 is a left side view of the first, second, and third preliminary seedling stands in the sixth alternative embodiment of the invention; FIG. 20 is a left side view of the first, second, and third preliminary seedling stands in the sixth alternative embodiment of the invention; FIG. 20 is a left side view of the third preliminary seedling placing table in the seventh alternative embodiment of the invention. In the tenth alternative embodiment of the invention, it is a left side view of the first, second and third preliminary seedling placing stands.

1 to 24 show a ride-on rice transplanter equipped with a spare seedling platform, in which F indicates the forward direction, B indicates the rearward direction, U indicates the upward direction, D indicates downward, R indicates rightward, and L indicates leftward.

(Overall configuration of riding rice transplanter)
As shown in FIGS. 1 and 2, a machine body 3 is supported by right and left front wheels 1 and right and left rear wheels 2, and a seedling planting device 4 for planting seedlings on the field surface can be operated up and down. It is supported at the rear part of the body 3.

A floor 5 is provided in the body 3, a step 6 is provided in the rear part of the body 3 so as to be arranged at a position higher than the floor 5, and a driver's seat 7 is provided in the front part of the step 6. - 特許庁A fertilizing device 8 for supplying fertilizer to the paddy field is provided behind the step 6 so as to be arranged at a position higher than the step 6.例文帳に追加

A bonnet 9 that accommodates an engine (not shown) is provided in front of the driver's seat 7 and in the center of the front portion of the floor 5 in the left-right direction. is located at the rear of the Right and left handrail frames 14 are connected to the fuselage 3 and extend upward through the right laterally outward and left laterally outward sides of the steps 6 . A frame 15 is connected along the left-right direction across the right and left frames 14 .

(Construction of support frame for supporting spare seedling tray)
As shown in FIGS. 1 and 2, right and left support frames 17 are connected to the right and left portions of the forward lower portion of the fuselage 3 and extend laterally outward of the right forward portion and left forward laterally of the floor 5 . is extended upwards. A support frame 20 is connected along the left-right direction over the upper portions of the right and left support frames 17 .

The right and left support frames 16 are connected to the right and left parts of the front lower part of the fuselage 3 and extend upward laterally outward of the right front part and laterally outward of the left front part of the floor 5 . The upper part of the support frame 16 is connected to the upper part of the support frame 17 . Right and left support frames 18 and 19 are connected to the right and left parts of the front lower part of the fuselage 3 and extend laterally outward of the right front part and laterally outward of the left front part of the floor 5 upward. It is

Forward illuminating right and left lights 27 are mounted on the support frame 16 . Right and left spare seedling stands 24 on which one mat-like seedling can be placed are attached to the upper portions of the support frames 16 and 17 . As described above, the support frames 16 to 20 are provided in the front part of the airframe 3. As shown in FIG.

As shown in FIGS. 1 to 4, the right and left first preliminary seedling trays 11, the right and left second preliminary seedling trays 12, the right and left A spare seedling placing stand 13 is provided as a third spare seedling placing stand on the left.

As described later in (Overall Configuration of First Preliminary Seedling Placement), the preliminary seedling placement stand 11 is supported by support frames 16-20.
As described later in (Construction for supporting the second spare seedling mount) and (Construction for supporting the third preliminary seedling mount), the spare seedling mount 12 is supported via the spare seedling mount 11. It is supported by frames 16-20, and a preliminary seedling mount 13 is supported by the support frames 16-20 via a preliminary seedling mount 11. - 特許庁

(Overall Configuration of First Spare Seedling Placement)
As shown in FIGS. 5 and 6, the spare seedling placement table 11 includes a right frame 21 as one frame, a left frame 21 as the other frame, and a plurality of support rollers 31 as a seedling placement portion. , right and left first fulcrum portions 41 , right and left fulcrum portions 43 , right and left first contact portions 51 , first lateral frame 61 and lateral frame 63 .

The right and left first fulcrum portions 41 are connected to the front end portion, which is the end portion of the frame 21 in the front-rear direction, and the right and left first contact portions 51 are connected to the first fulcrum portion 41, The first contact portion 51 is connected to the front end portion of the frame 21 via the first fulcrum portion 41 . The first horizontal frame 61 is connected across the right and left first fulcrum portions 41 , and the first horizontal frame 61 is attached to the front end portions of the right and left frames 21 via the first fulcrum portions 41 in the horizontal direction. connected along.

The right and left fulcrum portions 43 are connected to the rear end portion, which is the end portion in the front-rear direction, of the frame 21 , and the horizontal frame 63 is connected across the right and left fulcrum portions 43 . It is connected to the rear end portions of the right and left frames 21 via fulcrum portions 43 along the left-right direction. The right and left frames 21, the first horizontal frame 61, and the horizontal frame 63 ensure the overall rigidity of the preliminary seedling placement table 11. As shown in FIG.

A plurality of support rollers 31 are supported across the right frame 21 and the left frame 21 so as to be rotatable around an axis P1 along the left-right direction perpendicular to the longitudinal direction of the frame 21 .

The support rollers 31 are arranged side by side in the front-rear direction, and the right frame 21 and the left frame 21 are spaced apart from each other in the front-rear direction so that a gap C1 is formed between the adjacent support rollers 31 . supported by A length (interval) L1 in the front-rear direction of the gap C1 that is the interval between the adjacent support rollers 31 is set to be larger than the outer diameter D1 of the support rollers 31 .

In the right and left spare seedling placing stands 11 configured as described above, in the right spare seedling placing stand 11, the right frame 21 is supported above the support frames 18 and 19, and the left frame 21 is the support frame. 16 and 17. In the left spare seedling placement table 11, the right frame 21 is supported by the support frames 16 and 17, and the left frame 21 is supported above the support frames 18 and 19. As shown in FIG. As a result, the preliminary seedling mount 11 is supported by the support frames 16-20.

As shown in FIG. 4, the mat-like seedling E is rolled into a roll and fastened with a string or band, and the roll-like seedling E is placed between the adjacent supporting rollers 31, 32, 33 in the gaps C1, C2, It can be placed so as to drop into C3. The roll-shaped seedlings E can be stacked between the roll-shaped seedlings E placed on the support rollers 31 , 32 , 33 . As a result, the roll-shaped seedling E is positioned by the right and left frames 21, 22, 23 and the support rollers 31, 32, 33 adjacent to each other in the front and rear, and is stably placed on the preliminary seedling placement table 11 without rolling. , 12, 13.

(Composition of the frame in the first spare seedling placing table)
As shown in FIGS. 7 to 10, the frame 21 is made of aluminum and has a flat plate portion 28 and a hollow portion 29 .

The flat plate portion 28 has a flat plate shape along the vertical direction when viewed in cross section, and extends along the front-rear direction, which is the longitudinal direction of the frame 21 (seedling placement portion) when viewed from the side. The flat plate portion 28 is provided with an opening portion 28a for mounting the support roller 31 and an elongated hole 28b along the front-rear direction as a position adjusting portion.

When the frame 21 is attached to the support frames 16 to 19 as described above (overall configuration of the first preliminary seedling placement table), the bolts 30 (see FIGS. 3 and 8) are inserted into the long holes of the flat plate portion 28. The flat plate portion 28 is attached to the support frames 16 to 19 through the 28b. As a result, the mounting position of the preliminary seedling mount 11 on the support frames 16 to 19 can be adjusted in the longitudinal direction by the elongated hole 28b of the flat plate portion 28. As shown in FIG.

The hollow portion 29 is hollow having a width larger than that of the flat plate portion 28 when viewed in cross section, and is connected to the upper and lower portions of the flat plate portion 28. It extends along a certain front-rear direction.

A portion 29a of the hollow portion 29 facing the central portion of the support roller 31 (seedling placing portion) is formed in a straight line along the vertical direction in a cross-sectional view. A portion 29b of the hollow portion 29 opposite to the central portion of the support roller 31 (seedling placement portion) projects toward the side opposite to the central portion of the support roller 31 (seedling placement portion) in a cross-sectional view. It is formed in an arc shape, and the hollow portion 29 is formed in the shape of a quarter circle when viewed in cross section.

With the above configuration, the frame 21 has a vertically symmetrical shape, and the right and left frames 21 are the same. The right and left frames 21 are arranged such that the portions 29a of the hollow portions 29 of the right and left frames 21 face each other (to face the central portion of the support roller 31).

(Construction of support rollers in the first preliminary seedling placement table)
As shown in FIGS. 9 to 12, the support roller 31 is made of aluminum and has a cylindrical shape, and one end and the other end are open. A support shaft 34 for supporting the support roller 31, right and left bearings 35, and right and left bearing holders 36 are provided.

The support shaft 34 is composed of a round pipe. A flat portion 34a is formed at one end of the support shaft 34, and the other end 34b of the support shaft 34 is cylindrical. A bearing 35 is attached to the outer surface of the support shaft 34 from the end 34 b of the support shaft 34 .

The bearing holder 36 is made of synthetic resin and is divided into two parts in a semi-ring shape. and a flange portion 36c provided on the portion.

In the bearing holder 36, a predetermined length extends from the flange portion 36c, which is the end portion of the bearing holder 36 opposite to the insertion side into the support roller 31, toward the opposite side of the flange portion 36c, which is the insertion side into the support roller 31. The ends of the projections 36b are positioned at a distance of .

In the bearing holder 36 , the projection 36 b is formed from the above-described portion toward the end of the bearing holder 36 on the insertion side of the support roller 31 . Accordingly, on the outer surface of the holder portion 36a of the bearing holder 36, there is a portion 36d where the convex portion 36b is not provided between the convex portion 36b and the flange portion 36c.

With the above configuration, the holder portion 36 a of the two-part bearing holder 36 is attached to the outer surface of the bearing 35 , and the bearing holder 36 is press-fitted to the end portion of the support roller 31 . As the bearing holder 36 is pressed into the end of the support roller 31 , the projection 36 b of the bearing holder is scraped by the end of the support roller 31 and strongly pressed against the inner surface of the support roller 31 .

Before the flange portion 36c of the bearing holder 36 reaches the end of the support roller 31 (slightly before the bearing holder 36 is completely press-fitted into the end of the support roller 31), the convex portion 36b of the bearing holder 36 is provided. Since the portion 36d where there is no surface reaches the end portion of the support roller 31, shavings are less likely to occur.

When the flange portion 36c of the bearing holder 36 reaches the end of the support roller 31, the press-fitting of the bearing holder 36 to the end of the support roller 31 is completed. Thereby, the support roller 31 is rotatably supported by the support shaft 34 via the bearing 35 and the bearing holder 36 .

(Construction of support of support rollers in the first preliminary seedling placement table)
In the support roller 31 and the support shaft 34 configured as described in (Configuration of the support roller in the first preliminary seedling placement table), as shown in FIGS. A bearing portion 37 is provided to support the other portion.

The bearing portion 37 is integrally formed of synthetic resin, and includes a body portion 37a, a mounting portion 37b, an engaging portion 37c, a shaft insertion portion 37d, a groove portion 37e as a detent portion, a positioning portion 37f, and the like. there is

In the bearing portion 37, a main body portion 37a is formed in a square shape (rectangular shape) when viewed from the side. The attachment portion 37b is formed in an octagonal shape (polygonal shape) in a side view, and is attached to the main body portion 37a. A pair of claw-like engaging portions 37c are attached to the body portion 37a so as to be positioned on both sides of the attaching portion 37b. A hole-shaped shaft insertion portion 37d is formed from the main body portion 37a to the attachment portion 37b, and a groove portion 37e and a positioning portion 37f are provided in the inner depth portion of the shaft insertion portion 37d.

In the frame 21 (the flat plate portion 28 and the hollow portion 29 ) and the bearing portion 37 , the mounting portion 37 b and the engaging portion 37 c of the bearing portion 37 are inserted into the opening portion 28 a of the flat plate portion 28 . When the mounting portion 37b and the engaging portion 37c of the bearing portion 37 are inserted into the opening portion 28a of the flat plate portion 28 until the body portion 37a of the bearing portion 37 contacts the flat plate portion 28, the engaging portion 37c of the bearing portion 37 is engaged. engages with the edge of the opening 28a of the flat plate portion 28, and the mounting portion 37b of the bearing portion 37 prevents the flat plate portion 28 from coming off from the opening 28a.

At the same time, the body portion 37a of the bearing portion 37 enters between the upper and lower hollow portions 29, the upper side portion of the body portion 37a of the bearing portion 37 contacts the lower side portion of the upper hollow portion 29, and the bearing is closed. A lower side portion of the body portion 37a of the portion 37 contacts the upper side portion of the hollow portion 29 below, thereby preventing rotation of the bearing portion 37 around the axis P1. Thereby, the bearing portion 37 is attached to the flat plate portion 28 of the frame 21 .

The flat plate-like portion 34a of the support shaft 34 is inserted into the shaft insertion portion 37d of the bearing portion 37 attached to one of the right and left frames 21, and is inserted into the groove portion 37e of the bearing portion 37, so that the bearing portion 37 is It hits the deep inner part of the groove part 37e. The end portion 34b of the support shaft 34 is inserted into the shaft insertion portion 37d of the bearing portion 37 attached to the other of the right and left frames 21 and brought into contact with the positioning portion 37f of the bearing portion 37. As shown in FIG.

As a result, one portion and the other portion of the support shaft 34 are supported by the bearing portion 37, and the support roller 31 is rotatably mounted on the right and left frames 21 around an axis P1 orthogonal to the longitudinal direction of the frame 21. 21 is attached across the flat plate portion 28 . The upper end of the support roller 31 is positioned below the upper ends of the right and left frames 21 , 21 .

The groove portion 37e of the bearing portion 37 prevents rotation of the support shaft 34 around the axis P1. The position of the support shaft 34 in the direction of the axis P1 is determined by the groove portion 37e of the bearing portion 37 on one side and the positioning portion 37f of the bearing portion 37 on the other side.

(Overall Configuration of Second Spare Seedling Placement)
As shown in FIGS. 13 and 14, the spare seedling placement table 12 includes a right frame 22 as one frame, a left frame 22 as the other frame, and a plurality of support rollers 32 as a seedling placement portion. , right and left second fulcrum portions 42 , right and left second contact portions 52 , front guide rollers 38 as front guide members, locking portions 39 , second horizontal frame 62 and horizontal frame 64 and

The right and left second fulcrum portions 42 are connected to the rear end portion, which is the end portion in the front-rear direction of the frame 22, and the right and left second contact portions 52 are connected to the second fulcrum portion 42, The second contact portion 52 is connected to the rear end portion of the frame 22 via the second fulcrum portion 42 . The second horizontal frame 62 is connected across the right and left second fulcrum portions 42 , and the second horizontal frame 62 is attached to the rear end portions of the right and left frames 22 via the second fulcrum portions 42 in the left-right direction. connected along.

The right and left support portions 44 are connected to the front end portion, which is the end portion in the front-rear direction, of the frame 22 , the horizontal frame 64 is connected across the right and left support portions 44 , and the horizontal frame 64 is connected to the right side. and the front end portion of the left frame 22 via a support portion 44 along the left-right direction. A locking portion 39 formed in a channel shape in plan view is connected to the front portion of one frame 22 . The right and left frames 22, the second horizontal frame 62, and the horizontal frame 64 ensure the overall rigidity of the preliminary seedling placement table 12. As shown in FIG.

In the spare seedling placing table 12, the frame 22 has a flat plate portion, similar to the frame 21 of the spare seedling placing table 11 (see the above-mentioned (first preliminary seedling placing table) and FIGS. 7 to 12). 28, with upper and lower hollows 29; In this case, the frame 22 does not have the long hole 28b of the flat plate portion 28 .

The preliminary seedling loading table 12 is provided with the same support rollers 32 as the supporting rollers 31 of the preliminary seedling loading table 11, and is similar to the configuration of the supporting rollers in the first preliminary seedling loading table (first preliminary seedling loading table). Structure of Supporting the Support Rollers in 3.). Similar to the spare seedling placement table 11, the support rollers 32 are rotatably mounted on the flat plate portions 28 of the right and left frames 22 around the axis P2 along the horizontal direction perpendicular to the longitudinal direction of the frame 22. mounted across.

(Configuration of front guide rollers in the second spare seedling placement table)
As shown in FIGS. 13 and 14, a front guide roller 38 having a length that spans the right and left frames 22 is an axial center extending in the left-right direction perpendicular to the longitudinal direction of the frame 22. It is supported over the upper portions of the right and left support portions 44 so as to be rotatable around an axis P4.

The front guide roller 38 is arranged at a position higher than the support roller 32 (seedling placement section), and is arranged at a position higher than the frame 22 (upper hollow section 29). provided in the department.

(Positional relationship between the front guide roller and the support roller in the second spare seedling placement table)
As shown in FIGS. 13 and 14, the support rollers 32 are arranged side by side in the front-rear direction, and a gap C2 is formed between the front guide roller 38 and the support rollers 32 and between the adjacent support rollers 32. are supported by the right frame 22 and the left frame 22 so as to be spaced apart from each other in the front-to-rear direction.

Of the plurality of support rollers 32, the first support roller 32(1) closest to the front guide roller 38 and the second support roller 32 (1) adjacent to the rear side of the first support roller 32(1) 2), the length (gap) L21 of the gap C2, which is the gap in the front-rear direction between the front guide roller 38 and the first support roller 32(1), is set to be sufficiently large.

A gap length (interval) L22, which is the longitudinal interval between the first support roller 32(1) and the second support roller 32(2), is set to be sufficiently small. Thereby, the length (interval) L22 is set to be smaller than the length (interval) L21.

Assuming an imaginary line K1 connecting the upper end of the front guide roller 38 and the upper end of the first support roller 32(1) in side view, the imaginary line K1 corresponds to the second support roller 32 ( 2) and positioned above the axis P2 of the second support roller 32(2) in a side view.

In the third support roller 32(3), the fourth support roller 32(4), and the fifth support roller 32(5), which are adjacent to the rear side of the second support roller 32(2), the There is a length (gap) L23 in the gap C2, which is the gap in the front-rear direction between the second support roller 32(2) and the third support roller 32(3). A space C2, which is the space between the third support roller 32(3) and the fourth support roller 32(4) in the front-rear direction, has a length (space) L24. A space C2, which is the space between the fourth support roller 32(4) and the fifth support roller 32(5) in the front-rear direction, has a length (space) L25.

The length (interval) L23 is set larger than the length (interval) L22, the length (interval) L24 is set larger than the length (interval) L23, and the length (interval) L24 is longer than the length (interval) L24. The length (interval) L25 is set to be large, and the lengths (intervals) L22, L23, L24, and L25 increase in order.

The length (interval) L21 is set larger than the lengths (intervals) L22, L23, L24 and L25, and the lengths (intervals) L21, L23, L24 and L25 are the outer diameters of the support rollers 32. It is set to something larger than D2. The length (interval) L22 is set to be substantially the same as the outer diameter D2 of the support roller 32 or slightly smaller than the outer diameter D2 of the support roller 32.

As a result, among the plurality of support rollers 32, the length of the gap C2 between the support rollers 32(3)(4)(5) other than the first support roller 32(1) and the second support roller 32(2) (Intervals) L23, L24, and L25 are set to be longer than the length (interval) L22 of the gap C2 between the first support roller 32(1) and the second support roller 32(2).

As described above (overall configuration of the first preliminary seedling loading table) and shown in FIG. C2), it can be placed so as to drop between adjacent support rollers 32 (gap C2).

(Structure related to supporting the second spare seedling placement table)
As shown in FIGS. 3 and 4, the first fulcrum portion 41 of the preliminary seedling loading table 11 and the second fulcrum portion 42 of the preliminary seedling loading table 12 are connected so as to be swingable, so that the preliminary seedling loading table 12 can It is swingably supported around a first support axis P11, which is a support axis along the left-right direction of the front part of the spare seedling placing table 11. As shown in FIG.

As a result, the front and rear ends of the right frame 21 and the left frame 21 of the first preliminary seedling loading table 11 and the front and rear ends of the right frame 22 and the left frame 22 of the second preliminary seedling loading table 12 are arranged. , are supported so as to be able to swing around a first support axis P11, which is a support axis along the left-right direction.

The preliminary seedling loading table 12 is swingably supported around the first support axis P11 in the front part of the preliminary seedling loading table 11, so that the preliminary seedling loading table 12 is connected to the preliminary seedling loading table 11. A working posture A11, which is a first working posture extending forward from the front portion of the seedling loading table 11, and a storage posture, which is a first storing posture in which the front portion of the spare seedling loading table 11 is folded upward. The attitude can be changed to the attitude A21.

In the state where the spare seedling loading table 12 is operated in the working posture A11, the first contacting portion 51 of the preliminary seedling loading table 11 and the second contacting portion 52 of the preliminary seedling loading table 12 are brought into contact with each other, whereby the preliminary seedling loading table is operated. 12 is set (maintained) in the working posture A11.

If the seedling E is not placed on the spare seedling loading table 12 which is operated to the working posture A11, the preliminary seedling loading table 12 is brought to the working posture A11 by the contact between the first contact portion 51 and the second contact portion 52. It is set (maintained). The first horizontal frame 61 (see FIG. 5) of the spare seedling platform 11 and the second horizontal frame 62 (see FIG. 13) of the spare seedling platform 12 are close to each other. A slight gap is generated between the two lateral frames 62 .

When the seedling E is placed on the preliminary seedling loading table 12 which is operated to the working posture A11 and the preliminary seedling loading table 12 is about to be displaced downward, the first horizontal frame 61 and the second horizontal frame 62 move in the left-right direction. It abuts along substantially the entire length. As a result, the contact between the first contact portion 51 and the second contact portion 52 and the contact between the first horizontal frame 61 and the second horizontal frame 62 stop the downward displacement of the preliminary seedling placement table 12. Thus, the spare seedling placement table 12 is set (maintained) in the working posture A11.

As shown in FIGS. 1 and 3 , the front holding portion 25 is provided in a portion of the support frame 16 protruding upward from the preliminary seedling loading table 11 and below the preliminary seedling loading table 24 .
By operating the spare seedling placing table 12 to the storing posture A21 and holding the engaging portion 39 of the spare seedling placing stand 12 in the front holding portion 25, the spare seedling placing stand 12 can be held in the storing posture A21. By releasing the holding of the front holding portion 25, the preliminary seedling placing table 12 can be operated to the working posture A11.

(Overall Configuration of Third Spare Seedling Placement)
As shown in FIGS. 15 and 16, the spare seedling placement table 13 includes a right frame 23 as one frame, a left frame 23 as the other frame, and a plurality of support rollers 33 as a seedling placement portion. , right and left fulcrum portions 45 , right and left engaging portions 46 , locking portion 40 , and lateral frames 65 and 66 .

The right and left fulcrum portions 45 are connected to the front end portion, which is the end portion of the frame 23 in the front-rear direction, the horizontal frame 65 is connected across the right and left fulcrum portions 45, and the horizontal frame 65 is connected to the right side. and the front end portion of the left frame 23 via a fulcrum portion 45 along the left-right direction.

The right and left engaging portions 46 are connected to the rear end portion, which is the end portion in the front-rear direction, of the frame 23, and the horizontal frame 66 is connected across the right and left engaging portions 46. 66 are connected to the rear ends of the right and left frames 23 via engaging portions 46 along the left-right direction. A locking portion 40 formed in a channel shape in plan view is connected to the rear portion of one frame 23 . The right and left frames 23, horizontal frames 65, and horizontal frames 66 ensure the overall rigidity of the preliminary seedling placement table 13. As shown in FIG.

In the spare seedling placing table 13, the frame 23 is a flat plate portion, similar to the frame 21 of the spare seedling placing table 11 (see the above-mentioned (first preliminary seedling placing table) and FIGS. 7 to 12). 28, with upper and lower hollows 29; In this case, the frame 23 does not have the elongated hole 28b of the flat plate portion 28 .

The preliminary seedling loading table 13 is provided with the same supporting rollers 33 as the supporting rollers 31 of the preliminary seedling loading table 11. Structure of Supporting the Support Rollers in 3.). Similar to the spare seedling placement table 11, the support rollers 33 are rotatably attached to the flat plate portions 28 of the right and left frames 23 around the axis P3 along the horizontal direction perpendicular to the longitudinal direction of the frame 23. mounted across.

The support rollers 33 are arranged side by side in the front-rear direction, and the right frame 23 and the left frame 23 are spaced apart from each other in the front-rear direction so that a gap C3 is formed between the adjacent support rollers 33 . supported by The longitudinal length (interval) L3 of the gap C3, which is the interval between the adjacent support rollers 33, is set to be larger than the outer diameter D3 of the support rollers 33. As shown in FIG.

As described above (overall configuration of the first preliminary seedling loading table) and shown in FIG. 4, the roll-shaped seedlings E are dropped into the adjacent support rollers 33 (gap C3) in the same manner as the preliminary seedling loading table 11. can be placed as follows.

(Construction for supporting the third spare seedling placement table)
As shown in FIGS. 3 and 4, the fulcrum portion 43 of the preliminary seedling loading table 11 and the fulcrum portion 45 of the preliminary seedling loading table 13 are connected to each other so as to be swingable, and the preliminary seedling loading table 13 is configured as a preliminary seedling loading table. 11 is swingably supported around a second support axis P21 extending in the left-right direction.

As a result, the front and rear ends of the right frame 21 and the left frame 21 of the first preliminary seedling placement table 11 and the front and rear ends of the right frame 23 and the left frame 23 of the third preliminary seedling placement table 13 are arranged. , are supported so as to be able to swing about a second support axis P21 along the left-right direction.

The preliminary seedling tray 13 is swingably supported around a second support axis P21 at the rear of the preliminary seedling tray 11, so that the preliminary seedling tray 13 is connected to the preliminary seedling tray 11. A working posture A12, which is a second working posture extending rearward from the rear portion of the seedling loading table 11, and a storage posture A22, which is a second storing posture folding upward from the rear portion of the spare seedling loading table 11. It is possible to change the posture to

As shown in FIGS. 17 and 18, round-bar-shaped support frames 47, which are support portions, are provided at the right front portion and the left front portion of the step 6 along the left-right direction. When the preliminary seedling loading table 13 is operated to the working posture A12, the horizontal frame 66 of the preliminary seedling loading table 13 is placed on the support frame 47, and the rear part of the preliminary seedling loading table 13 is supported by the support frame 47. - 特許庁As a result, the front portion of the preliminary seedling platform 13 is supported by the rear portion of the preliminary seedling platform 11, and the rear portion of the preliminary seedling platform 13 is supported by the step 6 (support frame 47).

When the spare seedling tray 13 is operated to the working posture A12, the support frame 47 enters between the rear end portion of the frame 23 and the engagement portion 46, and the engagement portion 46 is engaged with the support frame 47. Become. As a result, the rear end portion of the frame 23 and the engaging portion 46 determine the position of the preliminary seedling tray 13 in the front-rear direction.

As described above (structure of frame in the first spare seedling placement table) and shown in FIG. 8, the mounting position of the spare seedling placement table 11 on the support frames 16 to 19 can be adjusted in the front-rear direction. By adjusting the mounting position of the spare seedling placing table 11 in the longitudinal direction, the position of the spare seedling placing table 13 in the working posture A12 can be adjusted in the longitudinal direction.

17 and 18, the support frame 47 is disengaged between the rear end portion of the frame 23 and the engaging portion 46 when the preliminary seedling tray 13 is operated to the working posture A12. can be set so that the engaging portion 46 can be engaged with the support frame 47 without coming off.

As shown in FIGS. 1 and 3 , the rear holding portion 26 is provided at a portion of the support frame 17 protruding upward from the preliminary seedling loading table 11 and below the preliminary seedling loading table 24 .
By operating the spare seedling placing table 13 to the storing posture A22 and holding the locking portion 40 of the spare seedling placing stand 13 in the rear holding portion 26, the spare seedling placing stand 13 can be held in the storing posture A22. By releasing the holding of the rear holding part 26, the preliminary seedling placing table 13 can be operated to the working posture A12.

(Configuration related to the third spare seedling mount and fuel tank on the right)
As shown in FIGS. 2 and 18, a fuel tank 48 is arranged inside the right front portion of the step 6 and provided in the fuselage 3 , and a filler port 48 a of the fuel tank 48 passes through the opening 6 a of the step 6 . and upwards. When the right preliminary seedling loading table 13 is operated to the working posture A12, the fuel tank 48 (fueling port 48a) is positioned below the right preliminary seedling loading table 13. As shown in FIG.

In the right spare seedling placement table 13, a flat plate-like cover 49, which is a protective portion, is connected to the horizontal frame 66 and extends forward under the support rollers 33. As shown in FIG. When the right spare seedling rest 13 is operated to the working posture A12, the upper side of the fuel tank 48 (fuel inlet 48a) and the upper side of the opening 6a of the step 6 are covered with the cover 49.

(Positional state of the 1st, 2nd and 3rd spare seedling trays)
As shown in FIGS. 1 and 3, the preliminary seedling loading table 11 is set in a forward-rising posture in which the front portion of the preliminary seedling loading table 11 is higher than the rear portion of the preliminary seedling loading table 11 with respect to the machine body 3. there is
In the state where the spare seedling mounts 12 and 13 are operated to the working postures A11 and A12, the front portions of the spare seedling mounts 12 and 13 with respect to the machine body 3 are the preliminary seedling mounts. It is set in a forward-rising attitude, which is higher than the rear parts of 12 and 13.

When the spare seedling resting table 12 is operated to the storage posture A21, the angle B1 in the side view between the spare seedling resting table 12 in the storing posture A21 and the spare seedling resting table 11 is set to be smaller than a right angle. , a retracted posture A21 is set.
When the spare seedling platform 13 is operated to the storage posture A22, the angle B2 between the spare seedling platform 13 in the storage posture A22 and the spare seedling platform 11 in a side view is smaller than a right angle. , the retracted posture A22 is set.

The retracted postures A21 and A22 are set such that the angle B2 is slightly smaller than the angle B1. As a result, the storage posture A21 is set to stand up from the spare seedling tray 11 rather than the storage posture A22, and the storage posture A22 is set to be closer to the spare seedling tray 11 than the storage posture A21.

With the above configuration, at least one of the storage posture A21 and the storage posture A22 is higher than the working posture A11 and the working posture than the posture in which the preliminary seedling tray 12 and the preliminary seedling tray 13 are stacked on the preliminary seedling tray 11. It is set to a posture close to A12.

(First alternative embodiment of the invention)
As shown in FIG. 19, assuming an imaginary line K2 extending in the front-rear direction along the preliminary seedling tray 11 in a side view, the preliminary seedling tray 12 is operated to the working posture A11, and the preliminary seedling tray is operated. The first fulcrum portion 41, the second fulcrum portion 42, and the The first contact portion 51 and the second contact portion 52 may be configured.

The front-to-rear length of the spare seedling placing table 13 may be set shorter than the front-to-rear length of the spare seedling placing table 12. - 特許庁According to this configuration, when the preliminary seedling loading table 13 is operated to the working posture A12, the rear part of the preliminary seedling loading table 13 may not be supported by the support frame 47 (see FIGS. 17 and 18).

In this case, the preliminary seedling loading table 13 may be set (maintained) in the working posture A12 by abutment between the fulcrum portion 43 of the preliminary seedling loading table 11 and the fulcrum portion 45 of the preliminary seedling loading table 13. .
The configuration of the first horizontal frame 61 and the second horizontal frame 62 described in the above (configuration related to supporting the second spare seedling placement table) is the horizontal frame 63 (see FIG. 5) of the extra seedling placement table 11 and the spare seedling placement table. The lateral frame 65 (see FIG. 15) of the seedling platform 13 may also be adopted.

In the above-described configuration, as shown in FIG. 19, the preliminary seedling loading table 13 is operated to the working posture A12, and the work of the preliminary seedling loading table 13 is performed in a state where the seedling E is not placed on the preliminary seedling loading table 13. The fulcrum portions 43 and 45 may be configured such that the posture A12 is set upward from the virtual line K2.

(Second alternative embodiment of the invention)
The front-to-rear length of the spare seedling loading table 12 may be set to be shorter than the front-to-back length of the preliminary seedling loading table 13. - 特許庁In this configuration, as shown in FIGS. 1 and 2, the front end of the preliminary seedling tray 11 is arranged at substantially the same position as the front end of the bonnet 9 and the front end of the floor 5 in the longitudinal direction of the machine body 3. It should be configured as follows.

(Third alternative embodiment of the invention)
As shown in FIG. 3, an angle B1 in a side view between the preliminary seedling tray 12 and the preliminary seedling tray 11 in the storage posture A21, and the auxiliary seedling tray 13 and the preliminary seedling tray 11 in the storage posture A22. At an angle B2 in a side view between may be configured.

It may be configured such that when the spare seedling platform 12 is operated to the retracted posture A21, the spare seedling platform 12 assumes a vertical posture (parallel to the support frame 16). In this configuration, angle B1 is slightly larger than the right angle.

It may be configured such that when the spare seedling platform 13 is operated to the retracted posture A22, the spare seedling platform 13 assumes a vertical posture (parallel to the support frame 17). In this configuration, angle B2 is slightly less than a right angle.

(Fourth alternative embodiment of the invention)
In FIG. 3, when the preliminary seedling loading table 12 is operated to the storage posture A21, the preliminary seedling loading table 12 assumes a posture in which the entire preliminary seedling loading table 12 is stacked above the preliminary seedling loading table 11, and the preliminary seedling. When the platform 13 is operated to the retracted posture A22, the posture shown in FIG. 3 may be assumed.
In this configuration, the front holding part 25 is eliminated, and the front-rear length of the spare seedling platform 12 is the same as the front-rear length of the spare seedling platform 11 or slightly shorter than the front-rear length of the spare seedling platform 11. should be set to

When the front holding part 25 is left without being abolished, the preliminary seedling placing table 12 is moved to the storage posture A21 held by the front holding part 25 and the preliminary seedling placing table 12 is placed on the whole of the preliminary seedling placing table 12. The configuration may be such that the seedlings are placed in the storing posture A21 stacked above the spare seedling placing table 11 so as to be operated. In this configuration, two types of storing attitudes A21 with different attitudes are set in the spare seedling placing table 12. - 特許庁

(Fifth alternative embodiment of the invention)
In FIG. 3, when the spare seedling platform 12 is operated to the storage posture A21, the spare seedling platform 12 assumes the posture shown in FIG. 3, and when the spare seedling platform 13 is operated to the storage posture A22. 13 may be configured so as to be stacked above the preliminary seedling loading table 11 over the entirety of the preliminary seedling loading table 13 .

In this configuration, the rear holding part 26 is eliminated, and the front-rear length of the spare seedling platform 13 is the same as the front-rear length of the spare seedling platform 11 or slightly shorter than the front-rear length of the spare seedling platform 11. should be set to When an operator gets on and off the floor 5 from the ground and from the floor 5 to the ground, the operator can hold both the frame 14 (see FIG. 1) and the support frame 17 as handrails.

When the rear holding part 26 is left without being abolished, the spare seedling placing table 13 is placed in the storage posture A22 held by the rear holding part 26, and the spare seedling placing table 13 is placed on the whole of the spare seedling placing table 13. The configuration may be such that the seedlings are stacked on the upper side of the spare seedling placing table 11 so as to be operated in the storing posture A22. In this configuration, two types of storing postures A22 with different postures are set in the spare seedling placing table 13. As shown in FIG.

(Sixth alternative embodiment of the invention)
In FIG. 3, when the preliminary seedling loading table 13 is operated to the retracted posture A22, the preliminary seedling loading table 13 is stacked above the preliminary seedling loading table 11 over the entirety of the preliminary seedling loading table 13. , the spare seedling placement table 12 may be configured as described below.

As shown in FIGS. 20, 21, and 22, a first support portion 53, which is a front-rear support portion, is provided at the front portion of the preliminary seedling placement table 11 so as to be movable in the front-rear direction, and a second support portion, which is a front-rear support portion. The portion 54 is supported on the front portion of the first support portion 53 so as to be swingable about an axis P5 extending in the left-right direction. A spare seedling platform 12 is supported on the front portion of the second support portion 54 so as to be swingable around the first support axis P11.

The state shown in FIG. 20 is a state in which the preliminary seedling loading table 12 is operated to the working posture A11, and the first support portion 53 is moved to the position where the rear portion of the preliminary seedling loading table 12 touches the front portion of the preliminary seedling loading table 11. and the second support portion 54 is operated rearward (toward the inside of the preliminary seedling tray 11).

As shown in FIG. 20, when the spare seedling loading table 13 is operated to the retracted posture A22, as shown in FIG. Then, the position of the shaft center P5 is brought out to a position on the front side of the front part of the preliminary seedling placing table 11.例文帳に追加Next, as shown in FIG. 22, the preliminary seedling placement table 11 and the second support portion 54 are swung upward about the axis P5 to change the attitude upward with respect to the preliminary seedling placement table 11. As shown in FIG.

By the above-described operation, the position of the first support shaft center P11 is set to a position that is substantially the same as the upper surface of the spare seedling placing table 13 in the stored posture A22, or a position slightly higher than the upper surface of the spare seedling placing table 13 in the stored posture A22. Therefore, the preliminary seedling loading table 12 is swung backward around the first support shaft center P11, and the entirety of the preliminary seedling loading table 12 is stacked above the preliminary seedling loading table 13 in a storage position A21. to operate.

(Seventh alternative embodiment of the invention)
In the sixth embodiment of the invention described above, the first support portion 53 is provided at the rear portion of the spare seedling placement table 11 so as to be movable in the front-rear direction, and the second support portion 54 is provided at the axis P5 along the left-right direction. It is supported on the rear portion of the first support portion 53 so as to be able to swing about, and the preliminary seedling placement table 13 is supported on the rear portion of the second support portion 54 so as to be able to swing about the second support axis P21. may be configured.

According to this configuration, the preliminary seedling loading table 12 is operated to the storage posture A21 in which the entirety of the preliminary seedling loading table 12 is stacked above the preliminary seedling loading table 11, and the preliminary seedling loading table 13 is moved to the storage position A21. is operated to a storage posture A22 stacked above the spare seedling resting table 12 in the storage posture A21.

(Eighth alternative embodiment of the invention)
As shown in FIG. 23 , in the preliminary seedling placement table 13 , right and left brackets 55 are provided on the right and left engaging portions 46 and are rear guide members having lengths spanning the right and left frames 23 . A certain rear guide roller 50 has an axis along the left-right direction perpendicular to the longitudinal direction of the frame 23, and is rotatable around an axis P6, which is the rear axis, across the right and left brackets 55. It may be configured to be supported by

As a result, the rear end of the preliminary seedling placement table 13 is adjusted so that the rear guide roller 50, which is rotatable around the axis P6 extending in the left-right direction, is arranged at a position higher than the support roller 33 (seedling placement portion). provided in the department.

(Ninth alternative embodiment of the invention)
As the front guide member and the rear guide member, instead of the front guide roller 38 and the rear guide roller 50, a fixed cylindrical member (not shown) that does not rotate, or a flat plate that is set in an inclined posture facing obliquely backward and downward. A front guide plate (not shown) and a flat plate-shaped rear guide plate (not shown) set in a tilted posture facing obliquely forward and downward may be provided on the spare seedling trays 12 and 13 .

(Tenth alternative embodiment of the invention)
As shown in FIG. 24, when the roll-shaped seedlings E are placed on the preliminary seedling mounts 11, 12, and 13, the roll-shaped seedlings E are piled up in a seedling box 56 and placed on the seedling box 56. may be placed on the preliminary seedling mounts 11, 12, 13.
In FIG. 24, seedling boxes 56 are placed one by one on each of the spare seedling trays 11, 12 and 13, but seedling boxes 56 loaded with roll-shaped seedlings E may be vertically stacked. good.

(Eleventh alternative embodiment of the invention)
As a seedling placement portion of the spare seedling placing table 11, a support roller 31 or a support member (not shown) having a main function of supporting the seedling E and a main function of conveying the seedling E along the front-rear direction are provided. The supporting rollers 31 may be mixed with the preliminary seedling placement table 11 .
In this case, the support roller 31 whose main function is to support the seedling E may be configured as a non-rotating, fixed one. The support member may be configured as a non-rotating fixed rod-like member or an elongated plate-like member.
The above-described configuration may be employed for the preliminary seedling loading table 12 and the preliminary seedling loading table 13 .

In the preliminary seedling placement table 11, the non-rotating fixed support rollers 31 and the rotatable support rollers 31 may be arranged alternately along the front-rear direction.
In this case, the fixed support roller 31 that does not rotate has the function of supporting the seedling E, but the function of transporting the seedling E in the front-rear direction is small or does not exist. The rotatable support rollers 31 have both the function of supporting the seedlings E and the function of transporting them in the front-rear direction.
The above-described configuration may be employed for the preliminary seedling loading table 12 and the preliminary seedling loading table 13 .

(Twelfth alternative embodiment of the invention)
An ultrasonic wave type or infrared type boarding/alighting detection unit (not shown) is provided so that the worker's boarding/alighting operation from the ground to the floor 5 and from the floor 5 to the ground is detected by the boarding/alighting detection unit. An electric motor (not shown) may be provided as a storage mechanism for swinging the mounting table 13 around the second support shaft P21.

As a result, when the operator's getting on/off motion from the ground to the floor 5 and from the floor 5 to the ground is detected by the boarding/alighting detector in a state in which the preliminary seedling placing table 13 is operated to the working posture A12, the electric motor is operated to place the preliminary seedlings. The placement table 13 may be automatically operated to the storage posture A22 or the posture stacked on the spare seedling placement table 11 (storage posture A22).

(Thirteenth alternative embodiment of the invention)
The supporting rollers 31, 32, 33 may be eliminated from the preliminary seedling placement bases 11, 12, 13, and flat plate-like members may be attached across the right and left frames 21, 22, 23 as the seedling placing portions. .

INDUSTRIAL APPLICABILITY The present invention can be applied to riding rice transplanters.

3 Airframe 5 Floor 6 Step 11 Spare seedling tray (first spare seedling tray)
12 Spare seedling tray (second spare seedling tray)
13 Spare seedling tray (third spare seedling tray)
16 support frame 17 support frame 18 support frame 19 support frame 20 support frame 25 front holding portion 26 rear holding portion 28b long hole (position adjusting portion)
46 engagement portion 47 support frame (support portion)
48 fuel tank 49 cover 53 first support (front and rear support)
54 second support (front and rear support)
A11 working posture (first working posture)
A12 Work Posture (Second Work Posture)
A21 Storage posture (first storage posture)
A22 Storage posture (second storage posture)
B1 Angle B2 Angle P11 First support axis P21 Second support axis

Claims (10)

a support frame at the front of the fuselage;
a first preliminary seedling mount supported by the support frame;
Around a first support axis along the left-right direction of the front part of the first preliminary seedling loading table, forward from the front part of the first preliminary seedling loading stage so as to be continuous with the first preliminary seedling loading stage. and a first storage posture in which the front portion of the first spare seedling placement table is folded upward. a second auxiliary seedling mount supported on the front of the base;
Extending rearwardly from the rear part of the first preliminary seedling placing table around a second support shaft along the lateral direction of the rear part of the first preliminary seedling placing table so as to be continuous with the first preliminary seedling placing table. The rear portion of the first spare seedling placement table is changeable between a second working posture that is extended and a second storage posture that is folded upward from the rear portion of the first preliminary seedling placement table. A third spare seedling platform supported by the
At least one of the first storage posture and the second storage posture is such that the second preliminary seedling loading table and the third preliminary seedling loading table are stacked on the first preliminary seedling loading table. A riding rice transplanter set to a posture closer to the first working posture and the second working posture than the posture. The first storage posture is set to a posture that stands up from the first spare seedling placing stand rather than the second storage posture,
2. The riding rice transplanter according to claim 1, wherein said second stored posture is set closer to said first spare seedling rest than said first stored posture. The first storage is performed such that an angle in a side view between the second preliminary seedling loading table and the first preliminary seedling loading table in the first storage attitude is smaller than a right angle. Posture is set
The second storage is performed such that an angle in a side view between the third preliminary seedling loading table and the first preliminary seedling loading table in the second storage attitude is smaller than a right angle. The riding rice transplanter according to claim 2, wherein the posture is set. One of the second preliminary seedling placing table and the third preliminary seedling placing table is supported around one of the first support shaft core and the second support shaft core so as to be able to change its attitude, and Provided on the first spare seedling placing table so as to be movable forward or rearward from either the front part or the rear part of the spare seedling placing table, and from either the front part or the rear part of the first spare seedling placing table A front and rear support part is provided that can change its posture upward with respect to the first preliminary seedling placement table in a state of moving either forward or backward,
The other of the second preliminary seedling loading table and the third preliminary seedling loading stage is arranged to cover the entirety of the other of the second preliminary seedling loading stage and the third preliminary seedling loading stage. The position can be changed to the position stacked above the spare seedling stand,
One of the second preliminary seedling placing table and the third preliminary seedling placing table is changed to the second preliminary seedling placing table by operating the front and rear supporting parts to move one of the front and rear sides and to change the attitude upward. Said second spare seedling placing stand and said third spare seedling placing stand are operated so that the entire one of said placing stand and said third spare seedling placing stand is stacked on said first spare seedling placing stand. 4. The riding rice transplanter according to claim 2 or 3, which can be stacked above the other of the seedling stands. A front holding portion capable of holding and releasing the second spare seedling placement table operated to the first storage posture is provided in a portion of the support frame protruding upward from the first spare seedling placement table. ,
A post-holding portion capable of holding and releasing the third spare seedling placement table operated to the second storage posture is provided at a portion of the support frame protruding upward from the first spare seedling placement table. The riding rice transplanter according to any one of claims 2 to 4. The front-to-rear length of one of the second preliminary seedling loading table and the third preliminary seedling loading table is shorter than the front-to-back length of the other of the second preliminary seedling loading table and the third preliminary seedling loading table. The riding rice transplanter according to any one of claims 1 to 5, which is set as a vehicle. a fuel tank is provided on the machine body so as to be positioned below the third preliminary seedling rest operated in the second working posture;
7. The method according to any one of claims 1 to 6, wherein said third spare seedling placing table is provided with a protective portion that covers an upper portion of said fuel tank when said third spare seedling placing table is operated to said second working posture. The riding rice transplanter according to any one of the items. a floor provided on the fuselage;
a step provided at the rear part of the fuselage and arranged at a position higher than the floor,
a support portion for supporting a rear portion of the third preliminary seedling placing table operated to the second working posture is provided on the step;
The engaging portion that determines the position of the third spare seedling placing table in the front-rear direction is engaged with the support portion when the third spare seedling placing table is operated to the second working posture. The riding rice transplanter according to any one of claims 1 to 7, wherein the riding rice transplanter is provided on a third spare seedling loading table. 9. The riding rice transplanter according to claim 8, further comprising a position adjusting portion capable of adjusting a mounting position of said first spare seedling rest on said support frame in the front-rear direction. a boarding/alighting detection unit that detects a worker's boarding/alighting motion to/from the floor;
a storage mechanism for automatically operating the third spare seedling placement base to the second storage posture or the posture stacked on the first spare seedling placement base on the basis of detection by the boarding/alighting detector; The riding rice transplanter according to claim 8 or 9 provided.

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