JP6717275B2 - Work vehicle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a work vehicle for performing work in a field.

As a seedling transplanter of an example of a conventional work vehicle, a planting device that supplies a seedling tray made of resin in which a large number of potted seedlings that have been raised are arranged in the vertical and horizontal directions, takes out the potted seedlings from the seedling tray, and implants them in the field A configuration in which it is connected to a rear portion of a vehicle body is known (for example, refer to Patent Document 1).

Further, in the above-mentioned conventional seedling transplanter, an empty seedling tray after all pot seedlings have been taken out from the seedling tray is pushed forward from the rear end of the tray transport path, and is provided on the lower front side. The housing case is formed of a rod-shaped member.

JP, 2016-101129, A

However, according to the above-described conventional configuration, when the empty seedling tray is pushed forward from the rear end of the tray transport path, the rail members that support the left and right ends of the seedling tray are not provided. The front end of the seedling droops greatly due to its own weight, hits the bottom of the seedling raising pot of the seedling tray already stored in the storage case, and pushes the seedling tray forward, so the seedling trays stored in the storage case are misaligned with each other, and clean. There was a problem that they could not be lined up and stacked.

The present invention has been made in view of these problems of the conventional work vehicle described above, and an object of the present invention is to provide a work vehicle in which seedling trays can be more neatly aligned and stacked as compared with the conventional work vehicles.

In order to solve the above problems, the present invention according to claim 1 provides
The running car body (2),
A work vehicle comprising: a planting device (200) which is connected to a rear portion of the traveling vehicle body (2) and takes out the pot seedlings from a seedling tray (50) in which pot seedlings are arranged, and which is planted in a field.
The planting device (200) is
A seedling tray transfer device (210) for transferring the supplied seedling tray (50) from the upstream side to the downstream side of the transfer path;
A seedling planting section (220) which is provided in the middle of the transport path and takes out the pot seedlings from the transported seedling tray (50) and plants them in the field.
A collection device (300) for collecting the pot seedlings in the seedling planting section (220) and collecting the seedling tray (50) sent out from the end of the transport path,
The recovery device (300) is
The seedling tray that has arrived at the end portion of the transport path is guided from the end portion to the front, while the front end portion of the seedling tray is guided while maintaining a predetermined posture in which the front end portion is higher than the rear end portion. A guide part (310L, 310R, 330L, 330R) for dropping the seedling tray from the predetermined posture,
And a seedling tray accommodating portion (350) for receiving and accommodating the seedling tray falling from the guide portion (310L, 310R, 330L, 330R),
Bottom of the seedling tray accommodating unit, the seedling tray coming to the fall, and has a portion which receives as constituting a by Ri front rising posture as compared with the predetermined orientation, or by the falling the seedling tray is received, the have a predetermined posture can be changed by Ri forwardly upward posture as compared with the site, a work vehicle, characterized in that.

The present invention according to claim 2 is
The guide portions (310L, 310R, 330L, 330R) have rail members (330L, 330R) capable of supporting the left and right end portions of the seedling tray from the side surface side and the lower surface side and being able to guide forward,
The work vehicle according to claim 1, wherein a front side width of a portion of the rail member capable of supporting the seedling tray is formed narrower than a rear side width thereof.

The present invention according to claim 3 is
The guide portions (310L, 310R, 330L, 330R) are rail members (330L, 330R) capable of supporting the left and right end portions of the seedling tray from the side surface side and the lower surface side and being able to guide forward, and the rail member. Rail guide members (310L, 310R) that are coupled to (330L, 330R) and can rotate the rail member.
The rail members (330L, 330R) can take a first posture capable of supporting the seedling tray and a second posture not capable of supporting the seedling tray,
While the rail guide members (310L, 310R) are in contact with the predetermined portions on the left and right sides of the seedling tray, the rail guide members take a retracted posture to retract from the movement path of the predetermined portions on the left and right sides, and It takes a non-retracted posture while the predetermined parts on both the left and right sides are not in contact,
While the rail guide members (310L, 310R) are in the retracted posture, the rail members (330L, 330R) continue to take the first posture, and the rail guide members (310L, 310R) are in the non-retracted posture. The work vehicle according to claim 1, wherein the rail member (330L, 330R) takes the second posture when the above is taken.

The present invention according to claim 4 is
The bottom portion of the seedling tray accommodating portion has the changeable portion,
The bottom portion of the seedling tray accommodating portion,
A first support portion (352A1, 352L1, 352R1) for supporting the rear end side of the seedling tray from below,
A second support portion (353a) located on the front side of the first support portion and supporting the seedling tray from below;
It is possible to change the posture to the forward rising posture as compared with the posture of the seedling tray which is located between the first support portion and the second support portion and is supported by the first support portion and the second support portion. The work vehicle according to any one of claims 1 to 3, further comprising a formed third support portion (354A, 354B).

The present invention according to claim 5 is
The work vehicle according to claim 4, wherein the posture of the seedling tray supported by the first support portion and the second support portion is parallel to the predetermined posture in a side view. ..

The present invention according to claim 6 is
It is equipped with a fertilizer application device for applying the fertilizer stored in the hopper (40) to the field,
A convex member (401, 411, 421, 431) is provided at a position capable of supporting the seedling tray on the upper surface of the lid portion (400L, 400R, 410L, 410R, 420L, 420R, 430L, 430R) of the hopper. The work vehicle according to any one of claims 1 to 5, wherein:
The first invention related to the present invention is
The running car body (2),
A work vehicle comprising: a planting device (200) which is connected to a rear portion of the traveling vehicle body (2) and takes out the pot seedlings from a seedling tray (50) in which pot seedlings are arranged, and which is planted in a field.
The planting device (200) is
A seedling tray transfer device (210) for transferring the supplied seedling tray (50) from the upstream side to the downstream side of the transfer path;
A seedling planting section (220) which is provided in the middle of the transport path and takes out the pot seedlings from the transported seedling tray (50) and plants them in the field.
A collection device (300) for collecting the pot seedlings in the seedling planting section (220) and collecting the seedling tray (50) sent out from the end of the transport path,
The recovery device (300) is
A guide unit (310L) that guides the seedling tray that has arrived at the end portion of the transport path forward from the end portion while maintaining a predetermined posture, and drops the guided seedling tray from the predetermined posture. , 310R, 330L, 330R),
And a seedling tray accommodating portion (350) for receiving and accommodating the seedling tray falling from the guide portion (310L, 310R, 330L, 330R),
The bottom portion of the seedling tray accommodating portion has a portion for receiving the falling seedling tray such that the front end portion of the seedling tray is in a posture of being raised upward from the rear end portion as compared with the predetermined posture. Or has a part that can change the fallen and received seedling tray to a posture in which the front end portion of the seedling tray is forwardly raised from the rear end portion as compared with the predetermined posture. Working vehicles and the like.

According to the present invention described in claim 1, the seedling trays can be piled up in the seedling tray accommodating portion in a more neat manner than in the conventional case.

In addition, since the seedling trays stacked in the seedling tray accommodating portion can be easily taken out, workability is improved.

Further, according to the present invention of claim 2, in addition to the effect of the present invention of claim 1, when the seedling trays stacked in the seedling tray accommodating section are taken out in a forward-raised posture, they are combined with a rail member. Interference is reduced, and it is easier to take out more reliably, so that workability is improved.

Further, according to the present invention described in claim 3, in addition to the effect of the present invention according to claim 1, the posture of the rail member can be changed with a simple configuration.

Further, according to the present invention as set forth in claim 4, in addition to the effect of the present invention as set forth in any one of claims 1 to 3, the falling seedling tray is provided by the first support portion and the second support portion. The seedling trays that are supported and stably stacked, and the stacked seedling trays can be changed to a front-up posture by the third support portion, are easy to take out, and workability is improved.

Further, according to the present invention of claim 5, in addition to the effect of the present invention of claim 4, falling seedling trays are more stably stacked.

Further, according to the present invention described in claim 6, in addition to the effect of the present invention according to any one of claims 1 to 5, even when a seedling tray is placed on the upper surface of the lid part of the hopper, work is performed. Since the convex member supports the seedling tray, the upper surface of the lid is less likely to be scratched.

Side view of a riding rice transplanter according to an embodiment of the present invention Plan view of the 8-row planting rice transplanter shown in Fig. 1. The enlarged side view of the rear part of the riding rice transplanter of this Embodiment shown in FIG. (A): a bottom view of a part of the seedling tray in the riding rice transplanter of the present embodiment, (b): a side view of a part of the seedling tray viewed from the short side A schematic side view showing a state of a seedling tray being conveyed along a conveyance path curved in a substantially U shape in a side view in the riding rice transplanter of the present embodiment. The perspective view which looked at the collection device in the riding rice transplanter of this Embodiment from the left rear. (A): A schematic plan view showing a state in which the left rail member arranged on the left side of the collection device is in a posture capable of supporting the seedling tray (this posture is referred to as a first posture in this specification), ( b): A schematic plan view showing a state in which the left rail member arranged on the left side of the recovery device is in a posture in which it cannot support the seedling tray (this posture is referred to as a second posture in this specification), ( c): CC sectional view taken along line CC shown in FIG. 7B, and FIG. 7D: DD sectional view taken along line DD shown in FIG. 7B. , (E): EE line sectional arrow view in the EE line shown to Fig.7 (a). Of the pair of left and right rail guide members arranged in the riding rice transplanter of the present embodiment, a perspective view of the left rail guide member as seen from the left rear side. A schematic partially enlarged rear view of the left rail member rear side support stay arranged on the left side of the recovery device in the passenger rice transplanter according to the present embodiment as seen from the rear to the front. Schematic plan view showing a state in which the pair of left and right rail members in the recovery device for the rice transplanter according to the present embodiment are in the first posture A partially enlarged view showing another configuration example in which the pair of left and right rail guide members in the riding rice transplanter of the present embodiment are inclined and fixed at a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members. (A): A schematic plan view of the left first hopper lid for explaining a first configuration example of the upper surface of the hopper lid of the fertilizer application, (b): Of the left first hopper lid shown in FIG. 12(a) Schematic side view, (c): a schematic plan view of the left second hopper lid for explaining the second configuration example of the upper surface of the hopper lid of the fertilizer application, (d): the left first hopper lid shown in FIG. 12(c) 2 schematic side view of the hopper lid, (A): A schematic plan view of the left third hopper lid for explaining a third configuration example of the upper surface of the hopper lid of the fertilizer applicator, (b): Of the left third hopper lid shown in FIG. 13(a) Schematic side view, (c): Schematic plan view of the right third hopper lid for explaining the third configuration example, (d): Schematic side view of the right third hopper lid shown in FIG. 13(c) A schematic partially enlarged side view of a lower part of a planting device and its periphery for explaining a mounting configuration of a rotor stay that holds a frame of a leveling rotor in a riding rice transplanter of the present embodiment A schematic partial enlarged side view of a lower part of a planting device and its periphery for explaining a mounting configuration of a motor stay for mounting a motor for raising and lowering a leveling rotor in a riding rice transplanter of the present embodiment (A): Partial enlarged schematic side view of a leveling rotor for explaining a connecting configuration of an elevating gear and an elevating arm in a riding rice transplanter of the present embodiment, (b): Between an articulated arm and a center rotor A partial enlarged schematic side view of the ground leveling rotor for explaining the provided pulling spring. (A): A schematic partially enlarged side view of the configuration of the feed claw and its peripheral members in the riding rice transplanter of the present embodiment as seen from the left side, (b): The feed claw and its peripheral members shown in FIG. 17(a) Rear view of the schematic partial enlarged view of the configuration of

Hereinafter, a riding rice transplanter for eight-row planting according to an embodiment of a work vehicle of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of a riding rice transplanter according to the present embodiment.

Further, FIG. 2 is a plan view of the riding rice transplanter of the present embodiment shown in FIG.

Further, FIG. 3 is an enlarged side view of the rear part of the riding rice transplanter of the present embodiment shown in FIG.

As shown in FIG. 1, in the riding rice transplanter 1 of the present embodiment, the planting device 200 is mounted on the rear side of the traveling vehicle body 2 through the elevating link device 30 so as to be vertically movable, and the fertilizer application is performed on the upper rear side of the traveling vehicle body 2. A hopper 40 of the device is provided.

The riding rice transplanter 1 is a four-wheel drive type working vehicle in which the traveling vehicle body 2 includes a pair of left and right front wheels 3 and a pair of left and right rear wheels 4.

Further, the engine 5 is mounted on the main frame 6, and the rotational power of the engine 5 is transmitted through an HST (hydrostatic stepless transmission) or the like to an auxiliary transmission mechanism (not shown) in the transmission case 7. Etc. The rotational power that has been changed in speed in the transmission case 7 is separately output as traveling power used for the traveling system and the like and external extraction power used for the planting device 200 and the like.

A part of the traveling power is transmitted to the pair of left and right front wheel final cases 8 to drive the front wheels 3, and the rest is transmitted to the left and right rear wheel gear cases 9L and 9R to drive the rear wheels 4. A part of the rotational power transmitted to the left rear wheel gear case 9L is transmitted to the leveling rotor drive shaft 101 to rotate the leveling rotor 100 (see FIG. 3).

The upper part of the engine 5 is covered with an engine cover 13, and the cockpit 10 is installed on the engine cover 13. A steering handle 11 for steering the front wheels 3 is provided in front of the cockpit 10, and the front side thereof is covered with a front cover 12. In addition, horizontal floor steps 14 are provided on the left and right sides of the lower ends of the engine cover 13 and the front cover 12, so that it is easy to perform a replenishment work such as a seedling tray and fertilizer.

Further, on the left and right sides of the steering handle 11 and the front cover 12, there are arranged supplementary seedling mounting frames 15 on which a large number of seedling trays 50 are stacked. A configuration in which the operator can take out the seedling tray 50 stored in advance to the starting end portion (upstream side) of the transport path 201 of the planting apparatus 200 connected to the rear portion while taking out the seedling tray 50 and sequentially supplying the seedling tray 50. Is.

The transport path 201 is configured to sequentially transport one seedling tray 50 per two planting rows and supply pot seedlings to each seedling planting section 220 described later to plant two rows. Therefore, in the riding rice transplanter 1 for eight-row planting, in order to realize multi-row planting, the transport paths 201, the seedling planting portions 220, and the like are provided in the lateral direction in fours in a plan view (FIG. 2). reference).

That is, the above-described planting apparatus 200 includes (1) a seedling tray transport device 210 that transports the successively supplied seedling trays 50 from the upstream side to the downstream side of the transport path 201, and (2) a transport path 201. A seedling planting section 220 that is provided on the way and takes out the potted seedlings from the transported seedling tray 50 and (3) the seedling planting section 220 takes out the pot seedlings and sends them out from the end of the transport path. A collection device 300 for sequentially collecting the empty seedling trays 50 is provided for each of the two planting articles.

Here, the configuration of the seedling tray 50 will be described mainly with reference to FIGS. 4(a) and 4(b).

FIG. 4A is a bottom view of a part of the seedling tray 50, and FIG. 4B is a side view of a part of the seedling tray 50 seen from the short side.

That is, as shown in FIGS. 4(a) and 4(b), the seedling tray 50 is a synthetic resin flexible, flat surface formed by arranging a large number of seedling raising pots 51 in the vertical and horizontal directions. It is a rectangular plate-shaped member when viewed, and can be curved in a substantially U shape in a side view on the transport path (see FIG. 5 ). FIG. 5: is a schematic side view which shows the state of the seedling tray 50 currently conveyed along the conveyance path 201 curved in the substantially U shape by side view.

The seedling raising pot 51 has a circular opening 51a on the back side in the drawing of FIG. 4(a), and a bottom portion 51b projects toward the front side in the drawing of FIG. 4(a), and raises seedlings inside the pot. It is a pot-shaped member having a space portion for the purpose (see FIG. 4B). In the bottom part 51b, a push-out pin (not shown) provided in the seedling planting part 220 for pushing out pot seedlings in the seedling raising pot 51 can be inserted from the bottom part 51b side toward the opening part 51a side. A slit hole 51b1 having a predetermined shape is formed.

The planting operation is performed by supplying the seedling tray 50 in the state where the pot seedlings have been raised in the seedling raising pot 51 to the transport path 201 of the planting apparatus 200.

In addition, as shown in FIG. 4A, the longitudinal direction of the seedling tray 50 corresponds to the transport direction (see arrow A in FIG. 4A), and both left and right edges of the width of the seedling tray 50 in the lateral direction. Substantially square feed holes 52 are formed in the portion along the long sides 53L and 53R on both the left and right sides at regular intervals.

The feeding claw 211 (see FIG. 5) of the seedling tray transport device 210 described above is engaged with the feeding hole portion 52 and moves up and down at a predetermined timing (see arrow B in FIG. 5), so that the seedling tray 50 is transported. Is intermittently performed for each row of the seedling raising pots 51.

Moreover, the above-mentioned seedling planting part 220 is a push-out pin (not shown) for inserting the seedling pots 51 in the horizontal row of the seedling tray 50 into the seedling pots 51 at the same time from the bottom 51b side to take out pot seedlings. Among pot seedlings for one row laterally pushed out by the push pin, the right half pot seedlings are transported to the right direction and the left half pot seedlings are transported to the left direction with a seedling feeding belt (not shown). Then, by rotating the planting claws 221 rotatably arranged below the left and right sides of the seedling feeding belt, the pot seedlings conveyed to the left and right sides by the seedling feeding belt are sequentially planted in the field. is there.

A float 230 is provided below each seedling planting section 220 (see FIG. 2 ). These floats 230 slide while smoothing the mud, and seedlings are planted by the planting claws 221 on the ground leveling marks.

In addition, the above-described recovery device 300 is arranged below the transport path 201a on the upstream side of the seedling tray transport device 210 (see FIGS. 1 and 3), and is delivered from the end portion of the transport path 210b on the downstream side. The seedling trays 50 in an empty state are sequentially collected (see FIG. 5). The recovery device 300 will be further described later.

Here, the configuration of the downstream transport path 201b will be described with reference to FIG.

That is, as shown in FIG. 5, the transport path 201b on the downstream side corresponds to the center position of the lateral width of the seedling tray 50, which supports the transported seedling tray 50 by contacting the opening 51a side surface thereof. The transport support bars 212 arranged at three places near the left and right sides, and the guide bar insertion space 54 provided in the longitudinal direction at the center position of the left and right width of the bottom 51b side surface of the seedling tray 50 (see FIG. 4 ( a) and a conveyance guide bar 213 arranged so as to be insertable in FIG. 4B).

The transport support bar 212 and the transport guide bar 213 are arranged at a predetermined interval in a side view, and are directed toward the collection device 300 side in order to guide the seedling tray 50 to the collection device 300 side. Curved diagonally upward and to the front. Further, the terminal end portion 212b of the transport support bar 212 is fixed to a predetermined stay (not shown) whose one end side is fixed to the lower portion of the upstream transport path 201a, and the terminal end portion 213b of the transport guide bar 213 is upstream. It is fixed to a conveyance guide bar support stay 214 (see FIG. 5) whose one end side is fixed to the side conveyance path 201a.

The traveling vehicle body 2 of the present embodiment is an example of the traveling vehicle body of the present invention. In addition, the seedling tray 50 of the present embodiment corresponds to an example of the seedling tray of the present invention. The planting apparatus 200 of the present embodiment corresponds to an example of the planting apparatus of the present invention, and the seedling tray transfer device 210 of the present embodiment corresponds to an example of the seedling tray transfer device of the present invention. Further, the seedling planting section 220 of the present embodiment corresponds to an example of the seedling planting section of the present invention, and the recovery device 300 of the present embodiment corresponds to an example of the recovery device of the present invention.

Next, the configuration and operation of the recovery device 300 arranged on the rear end side of the downstream transport path 201b will be further described mainly with reference to FIGS.

FIG. 6 is a perspective view of the recovery device 300 as viewed from the left rear side.

Further, FIG. 7A shows a posture in which the left rail member 330L arranged on the left side of the collection device 300 can support the seedling tray 50 (this posture is referred to as a first posture in this specification). FIG. 7B is a schematic plan view showing a state, and FIG. 7B shows a posture in which the left rail member 330L cannot support the seedling tray 50 (this posture is referred to as a second posture in this specification). It is a schematic plan view which shows a state.

In the present embodiment, when the left rail member 330L has the first posture capable of supporting the seedling tray 50, the right rail member 330R also has the first posture capable of supporting the seedling tray 50. When the left rail member 330L is in the second posture that cannot support the seedling tray 50, the right rail member 330R is also in the second posture that cannot support the seedling tray 50.

Further, FIG. 7C is a cross-sectional view taken along the line CC of FIG. 7B, and FIG. 7D is D- shown in FIG. 7B. FIG. 7 is a cross-sectional view taken along the line D-D of the line D, and FIG. 7E is a cross-sectional view taken along the line E-E of the line E-E illustrated in FIG. 7A. Note that, in FIGS. 7A to 7E, the pair of left and right rail guide members 310L and 310R are indicated by chain double-dashed lines.

In addition, FIG. 8 is a perspective view of the left rail guide member 310L of the pair of left and right rail guide members 310L and 310R arranged in the riding rice transplanter 1 as viewed from the left rear side.

In addition, FIG. 9 is a schematic partially enlarged rear view of the left rail member rear side support stay 342</b>L arranged on the left side of the recovery device 300 as viewed from the rear to the front. In FIG. 9, when the left rail member 330L is in the first posture and the left rail guide member 310L is in the retracted posture (shown by a solid line), the left rail member 330L is in the second posture and the left rail guide member 310L. Shows a state in which the person is in a non-evacuated posture (shown by a chain double-dashed line).

FIG. 10 is a schematic plan view showing a state in which the pair of left and right rail members 330L and 330R in the recovery device 300 are in the first posture.

In the present embodiment, when the left rail guide member 310L is in the retracted posture, the right rail guide member 310R is also in the retracted posture, and the left rail guide member 310L is not in the retracted posture. When in the retracted posture, the right rail guide member 310R is also in the non-retracted posture.

In addition, in the specification of the present application, the pair of left and right rail guide members 310L and 310R are in the retracted posture, and the pair of left and right rail guide members 310L and 310R are located at the left and right ends of the seedling tray 50 and in the vicinity thereof. It means that the bottom part 51b and the like are not in the movement path, and that the pair of left and right rail guide members 310L and 310R are in the non-retracted position means that the pair of left and right rail guide members. It means that 310L and 310R are in the postures existing in the movement path such as the left and right ends of the seedling tray 50 and the bottom 51b in the vicinity thereof.

The recovery device 300, as shown in FIG. 5 and FIG.
(1) A large number of conical projections 321 that engage with the openings 51a of the seedling tray 50 sent from the terminal end 212b of the transport support bar 212 of the downstream transport path 201b are arranged on the surface of the cylindrical roller member. By intermittently rotating in synchronization with the vertical movement of the feed claw 211, the empty seedling tray 50 is conveyed to the collecting device 300 side, and is rotatably arranged at the rear end side of the collecting device 300. Transporting roller 320,
(2) The long side end portions 53a along the left and right long sides 53L and 53R of the seedling tray 50 delivered from the transport roller 320 are supported and guided forward (corresponding to the first posture), and are guided. A pair of left and right rail members 330L configured to be able to drop the seedling tray 50 that came at a predetermined timing (corresponding to the second posture) and having a substantially L-shaped cross section in a direction orthogonal to the longitudinal direction. , 330R (see FIGS. 7A to 7E),
(3) A pair of left and right rail members 330L and 330R, which are welded and fixed to the rear end portions of the rear end portions of the rail members 330L and are transported to the vicinity of the terminal end portion 212b of the transport support bar 212 of the downstream transport path 201b. The bottoms 51b at the left and right ends on the front end side of the seedling tray 50 that came into contact with the member start the rotation of the member, and the pair of left and right rail members 330L move from the non-retracted posture to the retracted posture. The 330R is switched to the first posture capable of supporting the seedling tray 50, and the periphery of the long side edge portions 53b at the left and right ends of the seedling tray 50, the bottom portion 51b, and the like do not contact the member, so that the member is rotated as described above. A pair of left and right rail guides that rotate in the direction opposite to the movement to shift from the retracted posture to the non-retracted posture and switch the pair of left and right rail members 330L and 330R to the second posture in which the seedling tray 50 cannot be supported. Members 310L and 310R,
(4) The seedling tray retainer for preventing the seedling tray 50 from slipping off the rail members 330L and 330R in the horizontal direction while being conveyed on the pair of left and right rail members 330L and 330R. Stick 301,
(5) A pair of left and right rail members front side support stays 341L and 341R that rotatably support the front side of both ends of the pair of left and right rail members 330L and 330R in the longitudinal direction of the long plate shape,
(6) A pair of left and right rail members rear support stays 342L and 342R that rotatably support the rear side of the pair of left and right rail members 330L and 330R in the longitudinal direction of the long plate shape.
(7) A seedling tray storage basket 350, which is mainly formed of a wire having a circular cross section, receives and stores the seedling tray 50 falling from the pair of left and right rail members 330L and 330R.

The upper ends of the pair of left and right rail member front support stays 341L and 341R are fixed to the lower surface of the upstream transport path 201a of the seedling tray transport device 210, and the pair of left and right rail member rear support stays 342L and 342R are provided. The lower end portion of is fixed to the rear end portion of the seedling tray storage basket 350.

In addition, each of the pair of left and right rail members 330L and 330R has a substantially L-shaped cross section as shown in FIG. 7C, and a portion corresponding to the short side of the L-shaped is a seedling tray. 50 is a first rail portion 332a (see FIG. 7A) capable of supporting the long side end portions 53a (see FIG. 4B) on the bottom surface side of the left and right ends of 50 from below, and has an L-shape. The portion corresponding to the long side is the second rail portion 332b bent at a right angle to the first rail portion 332a.

Further, the front end portions of the left and right sides of the seedling tray 50 contact the front end portions of the pair of left and right rail members 330L and 330R, respectively, so that the seedling tray 50 causes the front ends of the pair of left and right rail members 330L and 330R. A wall-shaped seedling tray stopper 332c that is orthogonal to the first rail portion 332a and the second rail portion 332b is provided to prevent the portion from protruding forward from the portion. Further, the corner portion 332c1 of the seedling tray stopper 332c is obliquely cut out (see FIG. 7C). Accordingly, the pair of left and right rail members 330L and 330R are in the second posture (see FIG. 9), and even when the plurality of seedling trays 50 stored in the seedling tray storage basket 350 are taken out at the same time, the seedling tray 50 is The pair of left and right rail members 330L and 330R can be taken out smoothly without interfering with the corners 332c1 of the seedling tray stoppers 332c.

In addition, the front end portion 332b1 of the second rail portion 332b of the pair of left and right rail members 330L and 330R has a lower rising height from the surface of the first rail portion 332a, as shown in FIG. 7B. It is cut out. As a result, the pair of left and right rail members 330L and 330R are in the second posture, and even when the plurality of seedling trays 50 stored in the seedling tray storage basket 350 are taken out at the same time, the seedling tray 50 has a pair of left and right rail members. It can be taken out smoothly without interfering with the front side of the second rail portion 332b in 330L and 330R.

Further, rod-shaped members 333 having a circular cross section for rotatably supporting the pair of left and right rail members 330L and 330R are fixed to both ends of the front and rear ends of the pair of left and right rail members 330L and 330R. Has been done. That is, a part of the long-side surface of the rod-shaped member fixing plate 333a bent in a substantially L shape is welded and fixed to the back surfaces of the pair of left and right rail members 330L and 330R on both end sides of the first rail portion 332a. The rod-shaped member fixing plate 333a is welded and fixed to the short-side end edge of the rod-shaped member fixing plate 333a so that the rod-shaped member 333 projects forward or backward. It is separated from 332b by a predetermined size.

As a result, the rotation fulcrums of the pair of left and right rail members 330L and 330R are separated from the plane of the first rail portion 332a by a certain distance, and are separated from the second rail portion 332b by a predetermined dimension. Since the radius is increased and the pair of left and right rail members 330L and 330R are in the second posture, even when the plurality of seedling trays 50 stored in the seedling tray storage basket 350 are taken out at the same time, the pair of left and right seedling trays 50 can be used. The rail members 330L and 330R can be taken out smoothly without interfering with the seedling tray stopper 332c for preventing popping out provided at the front ends of the rail members 330L and 330R.

Of the rod-shaped members 333 provided at the above-mentioned both ends of the pair of left and right rail members 330L and 330R, the front rod-shaped member 333 is formed in the front support stay 341L (341R) of the rail member. , FIG. 10), and a rear rod-shaped member 333 is formed in a rail member rear side support stay 342L (342R) to form a rear through hole 342b (see FIGS. 9 and 10). ) Is rotatably supported by.

Since the pair of left and right rail guide members 310L and 310R described above are bilaterally symmetrical, the left rail guide member 310L will be further described mainly with reference to FIGS. 7A to 8. The right rail guide member 310R has the same configuration as the left rail guide member 310L, and therefore its description is omitted.

That is, as shown in FIG. 8, the left rail guide member 310L includes (1) a substantially rectangular rail guide base 311 and (2) one end 311a of the rail guide base 311 in the longitudinal direction. The left half of the left rail guide member 310L of the left rail member 330L is bent at a right angle from the left end 311b of the rail guide base 311 to the rail guide base 311 so that the first half of the part is projected. The rail guide fixing portion 312 having a substantially rectangular shape for fixing to the rear end portion of the 2 rail portion 332b, and (3) the rail guide base portion 311 are bent upward at right angles from the right end portion 311c of the rail guide base portion 311. The substantially rectangular rail guide first portion 313 and (4) the rail guide first portion 313, which are bent at a right angle from the upper end portion 313c of the rail guide first portion 313 toward the center of the machine body. It is a plate-shaped member composed of a rectangular rail guide second portion 314. In addition, as shown in FIG. 8, one of the both ends of the rail guide first portion 313 in the longitudinal direction is one end 313a, the other is the other end 313b, and both ends of the rail guide second portion 314 in the longitudinal direction. When one of the portions is the one end portion 314a and the other is the other end portion 314b, the other end portion 311d of the longitudinal end portions of the rail guide base portion 311 and the other end portion 313b of the rail guide first portion 313 are formed. The other end 314b of the rail guide second part 314 is located in the same plane, and the length from the other end 313b to the one end 313a of the rail guide first part 313 is based on that plane. The length from the other end 311d of the rail guide base 311 to the one end 311a is shorter than the length from the other end 314b of the rail guide second part 314 to the one end 314a of the rail guide first part 313. The left rail guide member 310L is formed to be shorter than the length from the other end 313b to the one end 313a.

That is, the pair of left and right rail guide members 310L and 310R is configured such that when the pair of left and right rail members 330L and 330R is in the second posture, in other words, when the pair of left and right rail guide members 310L and 310R is in the non-retracted posture, The bottom portions 51b at the left and right ends of the seedling tray 50 that have been transported to the vicinity of the terminal end portion 212b of the transport support bar 212 of the downstream transport path 201b have side edges 314c along the longitudinal direction of the rail guide second portion 314. Is formed so as to abut (see FIG. 5 and the side edge portion 314c shown by the chain double-dashed line in FIG. 9).

In addition, the pair of left and right rail guide members 310L and 310R are configured such that bottom portions 51b and the like at the left and right ends of the transported seedling tray 50 are brought into contact with the side edge portions 314c of the rail guide second portion 314, so that the pair of left and right rails. The guide members 310L and 310R are formed so as to start rotating counterclockwise (see arrow F in FIG. 9) in rear view with the rod-shaped member 333 as a rotation axis, and shift from the non-retracted posture to the retracted posture. Has been done.

In addition, the pair of left and right rail members 330L and 330R are interlocked with the movement of the pair of left and right rail guide members 310L and 310R from the non-retracted posture to the retracted posture, and the rod-shaped member 333 is used as the pivot axis until then. The rotation is started from the second posture (see arrow F indicating counterclockwise rotation in FIG. 9), and the long side end portions 53a of the left and right end portions of the seedling tray 50 are supported from below by the first rail portions 332a. At the same time, the second rail portion 332b is formed so as to be switched to the first posture in which it can be supported from the side. The left and right bottoms 51b and the like of the seedling raising pot 51 that are subsequently conveyed continue to contact the left and right rail guide second portions 314 and the like of the pair of left and right rail guide members 310L and 310R, thereby forming a pair of left and right rail members 330L. , 330R maintain the first posture. The maintenance of the first posture will be described later.

Also, the rotation stopper 332b2 (see FIGS. 7A, 7B, and 9) is projected rearward from the rear end of the second rail portion 332b of the pair of left and right rail members 330L and 330R. Is formed on.

Thereby, when the pair of left and right rail members 330L and 330R is switched from the second posture to the first posture, the rotation stopper 332b2 is disposed inside the pair of left and right rail member rear support stays 342L and 342R, that is, the seedling tray 50. By contacting the upper end of the rear side support stay edge 342a (see FIG. 9) on the existing side, it is possible to prevent the pair of left and right rail members 330L and 330R from excessively rotating.

Furthermore, when the pair of left and right rail guide members 310L and 310R shifts from the non-retracted posture to the retracted posture, as described above, the pair of left and right rail members 330L and 330R is switched from the second posture to the first posture. The load of the seedling tray 50 is applied to the first rail portion 332a via the long side end portions 53a at both left and right ends, and the pair of left and right rail members 330L and 330R try to start rotating downward. (See arrow G indicating clockwise in FIG. 9), the rail guide first portions 313 of the pair of left and right rail guide members 310L and 310R are brought into contact with the side surfaces of the seedling raising pot 51 of the seedling tray 50 being conveyed, and The rail guide second portion 314 is brought into contact with the bottom portion 51b of the seedling raising pot 51 that is being conveyed (see the rail guide second portion 314 and the like shown by the solid line in FIG. 9 ), so that a pair of left and right rail guides are provided. Since the members 310L and 310R cannot rotate downward (see arrow G indicating clockwise in FIG. 9), the pair of left and right rail members 330L and 330R are configured to maintain the first posture. ..

As a result, even if the left and right end portions of the front end side of the seedling tray 50 are damaged, the front end side of the seedling tray 50 that has been transported to the vicinity of the terminal end portion 212b of the transport support bar 212 of the downstream transport path 201b. The left and right bottom portions 51b and the like abut on the side edge portions 314c of the rail guide second portions 314 of the pair of left and right rail guide members 310L and 310R, so that the pair of left and right rail members 330L and 330R are surely placed in the second posture. To the first posture.

In addition, as described above, in the state where the pair of left and right rail members 330L and 330R maintain the first posture, as the seedling tray 50 is pushed forward by the rotation of the transport roller 320, both the left and right sides of the seedling tray 50 are pushed. The long side end portions 53a of the seedling tray 50 are supported by the pair of left and right first rail portions 332a from below and are also supported by the pair of left and right second rail portions 332b from both left and right side surfaces. The first rail portion 332a is slid forward, and eventually the front end portion of the seedling tray 50 (see reference numeral 50F1 in FIG. 10) advances to a position away from the seedling tray stopper 332c by a predetermined distance W and the rail guide first. Although the second portion 314 advances to a position where it does not come into contact with the bottom portions 51b of the seedling raising pots 51 at the left and right ends of the rear end portion (see reference numeral 50B1 in FIG. 10) of the seedling tray 50, the seedling tray 50 passes through that position and further forward. Even after the slide movement of the seedling tray 50, the rail guide first part 313 keeps the seedling pot of the seedling tray 50 until the front end portion (see reference numeral 50F2 of FIG. 10) of the seedling tray 50 reaches the position closest to the seedling tray stopper 332c. It is configured to abut on the side surface of 51 (see the rail guide first portion 313 and the like shown by the solid line in FIG. 9), and the pair of left and right rail members 330L and 330R are rotated downward (arrows in FIG. 9). (Refer to G), the pair of left and right rail members 330L and 330R can maintain the first posture. In addition, in FIG. 10, the line shown by the two-dot chain line with the reference numeral 50B2 indicates that the front end portion of the seedling tray 50 (see the reference numeral 50F2 in FIG. 10) has reached the position closest to the seedling tray stopper 332c. The position of the rear end of the seedling tray 50 is shown.

As a result, as shown in FIG. 10, the seedling tray 50 has a pair of left and right rail members until the front end portion (see reference numeral 50F2 of FIG. 10) of the seedling tray 50 reaches a position immediately near the seedling tray stopper 332c. Since 330L and 330R maintain the first posture, they do not fall to the seedling tray storage basket 350 side, but the front end portion of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) is located at a position immediately near the seedling tray stopper 332c. When the rail guide first portion 313 reaches the side, the rail guide first portion 313 does not come into contact with the side surface of the seedling raising pot 51 of the seedling tray 50, so that the pair of left and right rail members 330L and 330R are prevented from rotating downward (see arrow G in FIG. 9). Therefore, the pair of left and right rail members 330L and 330R cannot maintain the first posture, and the weight of the seedling tray 50 and the own weight of the pair of left and right rail members 330L and 330R cause the rod-shaped member 333 to be the center of rotation. , And rotates downward (see arrow G indicating clockwise in FIG. 9), and shifts from the first posture to the second posture. As a result, the seedling tray 50 falls under its own weight toward the seedling tray storage basket 350 due to its own weight.

As a result, the seedling tray 50 in an empty state that has been conveyed to the front end portions of the pair of left and right rail members 330L and 330R, starts to drop in that posture, that is, from the front end portion to the rear end portion almost at the same time. It is neatly aligned vertically in the storage basket 350.

That is, with the above configuration, since the front end portion of the seedling tray 50 is less likely to hang down than in the conventional case, the seedling trays 50 already stored in the seedling tray storage basket 350 are less likely to be pushed out forward, so that the seedling tray storage basket 350 is less likely to be pushed out. The fall of the seedling tray 50 can be suppressed.

Further, since the seedling trays 50 already stored in the seedling tray storage basket 350 are difficult to be pushed forward, after the seedling trays 50 are taken out from the seedling tray storage basket 350, the seedling trays 50 stacked in a state of being displaced from each other are stacked. It is not necessary to adjust the misalignment of and arrange them neatly.

Further, the seedling tray pressing rod 301 described above has a front portion 301a in a front rising state, a rear portion 301b in a rear rising state, and a pair of left and right rails between the front portion 301a and the rear portion 301b in a side view. When the members 330L and 330R are in the first posture, the central portion 301c which is parallel to the plane of the first rail portion 332a communicates with each other (see FIG. 6). When the seedling tray 50 slides forward on the upper surface of the first rail portion 332a when the pair of left and right rail members 330L and 330R are in the first posture, the central portion 301c guides the seedling tray 50. It is configured to be inserted and arranged in the bar insertion space 54 (see FIGS. 4A and 4B).

Thereby, the seedling tray 50 can be prevented from slipping off from the rail members 330L and 330R by being displaced in the left and right direction while being conveyed on the pair of left and right rail members 330L and 330R. Since the front part 301a is in the front rising state, even when a plurality of seedling trays 50 stored in the seedling tray storage basket 350 are taken out at the same time, the seedling trays 50 can be taken out smoothly without interfering with the seedling tray holding rods 301. ..

Further, in the present embodiment, as described above, the pair of left and right rail guide members 310L and 310R are welded and fixed to the rear end portions of the pair of left and right rail members 330L and 330R, and they are integrally rotated. With a simple configuration that is supported as much as possible, the conveyed seedling tray 50 contacts the pair of left and right rail guide members 310L and 310R to reliably rotate the pair of left and right rail members 330L and 330R, and the first posture is obtained. The second posture can be switched.

For example, as another configuration example of rotating the rail member, the center portion in the left-right width direction of the seedling tray is configured by a plurality of arm members or the like connected to the link member by contacting a predetermined link member. Also, a configuration in which the link mechanism is complicatedly interlocked to rotate the rail member is conceivable, but such a configuration example increases the number of parts and complicates the structure, which causes a cost increase.

On the other hand, according to the configuration of the recovery device 300 of the present embodiment described above, since the pair of left and right rail members 330L and 330R can be reliably rotated with a simple configuration, the number of parts can be reduced, Since the structure is simple, it can be realized at low cost.

The bottoms 51b on both end sides of the seedling tray 50 of the present embodiment are examples of predetermined portions on both left and right sides of the seedling tray of the present invention.

Next, the seedling tray storage basket 350 will be described mainly with reference to FIG.

In FIG. 6, a state in which a plurality of seedling trays 50 that have fallen from the pair of left and right rail members 330L and 330R are stacked at the storage position is shown as a two-dot chain line as a seedling tray 50A located at the storage position. Also, when the operator pulls the seedling tray 50A located at the storage position forward (see arrow H in FIG. 6), the posture of the seedling tray 50A at the storage position is changed to a front-up position. The outer shape of the seedling tray 50B, which is moved to the take-out position and is located at the take-out position, is shown by a chain double-dashed line.

The seedling tray storage basket 350 is
(1) A round bar member for fixing the seedling tray storage basket 350 to the pair of left and right rail member front support stays 341L and 341R, and the pair of left and right rail member rear support stays 342L and 342R, A front end of the both ends is welded and fixed below the front through hole 341a in the pair of left and right rail member front support stays 341L and 341R, and a rear end of the both ends is a pair of left and right rails. A pair of left and right housing basket fixing bars 351L and 351R welded and fixed below the rear through hole 342b in the member rear support stays 342L and 342R;
(2) A rear end support member 352 that supports the rear end side of the falling seedling tray 50,
(3) A front end support member 353 that supports the front end side of the falling seedling tray 50,
(4) The seedling tray 50A located between the rear end supporting member 352 and the front end supporting member 353 and supported by the rear end supporting member 352 and the front end supporting member 353 and located at the storage position, When the operator pulls it forward, the posture (referred to as the collecting posture) is raised forward as compared with the posture of the seedling tray 50A located at the storing position (this is called the storing posture) (at the taking-out position in FIG. 6). The front rising support member 354 that can be changed is provided in the positioned seedling tray 50B).

Further, a hose fixing portion 360 for fixing the fertilizer application hose is attached to a central position in the left-right width direction of the first supporting base 352A1 of the rear end supporting member 352 so as to project obliquely rearward and downward. .. A frame-shaped member 361 having a substantially rectangular shape in rear view for holding the fertilizer application hose is attached to the rear end of the hose fixing portion 360. The first support base 352A1 will be described later.

Further, the rear end support member 352 is
(1) In a rear view, the rear end first support is substantially U-shaped, and upper ends of both ends of the U-shape are welded and fixed to the lower surfaces of the rear portions of the pair of left and right housing basket fixing bars 351L and 351R. Member 352A,
(2) In the bent portion of the rear end first support member 352A bent at substantially right angles under both ends of the U-shape, the pair of left and right front end portions 352La and 352Ra are inside the bent portion and the seedling tray 50 is provided. Is welded and fixed at an interval of a dimension smaller than the left and right width of, and is bent at a substantially right angle upward from the rear end portions of the pair of left and right second support bases 352L1 and 352R1 that extend backward by a predetermined dimension in parallel with each other. Further, it is composed of a pair of left and right rear end second support members 352L and 352R, each of which has a front end bent rearward substantially at a right angle and fixed to a lower portion of the upstream transport path 201a.

The lower ends of the pair of left and right rail member rear support stays 342L, 342R are welded and fixed to the pair of left and right rear end second support members 352L, 352R, as shown in FIG.

Further, the substantially U-shaped front end portion support member 353 and the substantially U-shaped rear end portion first support member 352A are substantially opposite to each other on the outer side surfaces of the lower left and right ends thereof. The front end portion 355a of the reinforcing member 355 is welded and fixed to the outer side surfaces of the front end portions of the pair of left and right housing basket fixing bars 351L and 351R.

In addition, the first support base 352A1 between the bent portions of the rear end first support member 352A, which are bent at substantially right angles under the U-shaped ends, and the pair of left and right rear end second support members 352L and 352R. Inside, a pair of left and right second support bases 352L1 and 352R1 extending backward from the first support base 352A1 in parallel with each other by a predetermined dimension support the rear end side of the seedling tray 50A located at the accommodation position from below. ..

Further, the front end support member 353 is substantially U-shaped in rear view, and upper ends of both ends of the U-shape are welded and fixed to front lower surfaces of the pair of left and right storage basket fixing bars 351L and 351R. There is.

In addition, the front end support base 353a between the bent portions bent at substantially right angles under the U-shaped ends of the front end support member 353 supports the front end side of the seedling tray 50A located at the storage position from below. There is.

In the present embodiment, the seedling tray 50 dropped from the pair of left and right rail members 330L and 330R is supported by the front end support base 353a, the first support base 352A1 and the pair of left and right second support bases 352L1 and 352R1. The attitude (accommodation attitude) of the seedling tray 50 located in the storage position is approximately parallel to the attitude of the seedling tray 50 being conveyed forward on the pair of left and right rail members 330L and 330R. In a relationship.

Further, as shown in FIG. 6, the front rising support member 354 has a substantially L shape in a side view, and is formed in an L shape with the front rising first support base 354A corresponding to the long side of the L shape. The front rising second support base 354B corresponding to the short side is formed, and the connecting portion between the front rising first support base 354A and the front rising second support base 354B is bent at a substantially right angle. Further, the front end portion of the first front rising support base portion 354A is welded to the center position of the left and right width of the front end portion supporting base portion 353a so that the first front rising support base portion 354A is in a forward rising posture (recovery posture) in a side view. The rear end portion of the first support base 352A1 is fixed and the rear end portion of the second front support base 354B is positioned at the center of the left-right width of the first support base 352A1 so that the second front support base 354B is in a rearward posture in a side view. It is fixed by welding.

Thereby, the operator pulls the seedling tray 50A located at the storage position forward (see the arrow H in FIG. 6), so that the seedling tray 50A has the front end support base 353a and the front rising first support base 354A. Since the supporting condition changes so as to be supported by the second front support base 354B, it is possible to change the posture to the front posture compared to the posture of the seedling tray 50A located in the storage position and move it to the take-out position. I can. In this way, since the front end of the seedling tray 50B located at the extraction position can be moved upward, the riding rice transplanter 1 is performing the planting work in the field (at this time, the position of the planting device 200 is lowered. However, it is easy to collectively take out the stacked seedling trays 50 from the seedling tray storage basket 350.

Further, as described above, the front end portion 332b1 of the second rail portion 332b in the pair of left and right rail members 330L and 330R is notched so that the rising height from the surface of the first rail portion 332a is low. (See FIG. 7( b )), even when a plurality of stacked seedling trays 50 are collectively taken out from the seedling tray storage basket 350, the seedling tray 50 has a front side of the second rail portion 332 b in the pair of left and right rail members 330</b>L and 330</b>R. Can be taken out smoothly without interfering with.

Further, since the corner portion 332c1 of the seedling tray stopper 332c is obliquely cut out (see FIG. 7C), even when a plurality of seedling trays 50 are stacked and taken out from the seedling tray storage basket 350, The seedling tray 50 can be taken out smoothly without interfering with the corner portions 332c1 of the seedling tray stoppers 332c of the pair of left and right rail members 330L and 330R.

Further, since the front part 301a of the seedling tray holding rod 301 is in the forwardly raised state (see FIG. 6), even when a plurality of stacked seedling trays 50 are collectively taken out from the seedling tray storage basket 350, the seedling tray 50 is It can be taken out smoothly without interfering with the tray pressing rod 301.

In addition, the innermost of the pair of left and right rail member front support stays 341L, 341R, that is, the front support stay end edge portion 341b (see FIG. 9) on the side where the seedling tray 50 is present, is a plurality of seedling trays 50 stacked together. Even when the seedling trays 50 are collectively taken out, the seedling trays 50 are formed so as not to interfere with the front support stay end edge portion 341b, so that the seedling trays 50 can be taken out smoothly.

The configuration including the pair of left and right rail guide members 310L and 310R and the pair of left and right rail members 330L and 330R of the present embodiment is an example of the guide portion of the present invention, and corresponds to the seedling tray storage basket 350 of the present embodiment. Corresponds to an example of the seedling tray accommodating portion of the present invention. The pair of left and right rail members 330L and 330R of the present embodiment are examples of the rail member of the present invention. Further, the first support base 352A1 and the pair of left and right second support bases 352L1 and 352R1 of the present embodiment correspond to an example of the first support of the present invention, and the front end support base 353a of the present embodiment corresponds to the present invention. Corresponds to an example of the second support portion. Further, the configuration including the first rising front support base portion 354A and the second rising front support base portion 354B of the present embodiment corresponds to an example of the third support portion of the present invention.

Next, first to fourth configuration examples of the configuration of the upper surface of the hopper lid of the hopper 40 of the fertilizer application device provided on the upper rear side of the traveling vehicle body 2 will be described with reference to FIGS. 12 to 13.

In the first configuration example, a plurality of first ribs 401 are provided on the upper surfaces of the left and right pair of left first hopper lid 400L and right first hopper lid 400R in a direction orthogonal to the traveling direction of the riding rice transplanter 1. This is an example (see FIGS. 12A and 12B).

Further, in the first configuration example, a plurality of first ribs 401 are arranged at a pitch that can support the bottom portion 51b of the seedling raising pot 51 of the seedling tray 50.

FIG. 12A is a schematic plan view of the left first hopper lid 400L for explaining the first configuration example, and FIG. 12B is a left first hopper lid 400L shown in FIG. 12A. It is a schematic side view of.

In the riding rice transplanter 1 of the type in which pot seedlings are taken out from the seedling tray 50 and planted in the field, when the worker collects the empty seedling tray 50 stored in the seedling tray storage basket 350, the upper surface of the hopper lid is used. Then, the seedling tray 50 is often arranged, and the upper surface of the hopper lid is easily scratched as compared with other types of riding rice transplanters. However, in the pair of left and right first hopper lids 400L and 400R of the first configuration example described above, by providing the first ribs 401, it is possible to reduce contact with the upper surface of the hopper lid and maintain the appearance performance (look). I can.

Further, by providing the first ribs 401, even when the upper surface of the hopper lid is used to organize the seedling tray 50, the deflection of the hopper lid can be reduced, and the operator can collect the empty seedling tray 50. The workability of can be improved.

Next, in the second configuration example, the second ribs 411 are formed in a direction orthogonal to the traveling direction of the passenger rice transplanter 1 on the upper surfaces of the left and right pair of the left second hopper lid 410L and the right second hopper lid 410R. This is an example in which a plurality is provided (see FIGS. 12A and 12B ).

Further, in the second configuration example, the second ribs 411 are arranged at such a pitch that the ribs can be inserted between the seedling raising pots 51 of the seedling tray 50.

Further, in the second configuration example, the second rib 411 is configured such that the rib height is higher than the height of the seedling raising pot 51 of the seedling tray 50.

FIG. 12C is a schematic plan view of the left second hopper lid 410L for explaining the second configuration example, and FIG. 12D is the left second hopper lid 410L shown in FIG. 12C. It is a schematic side view of.

Thus, in the pair of left and right second hopper lids 410L and 410R of the second configuration example described above, the second rib 411 is provided to reduce contact with the upper surface of the hopper lid, as in the case of the first configuration example. , The appearance performance (look) can be maintained.

Further, by providing the second ribs 411, even when the seedling tray 50 is arranged using the upper surface of the hopper lid, it is possible to reduce the deflection of the hopper lid, as in the case of the first configuration example. It is possible to improve the workability of the operator for collecting the empty seedling tray 50.

Further, by providing the second ribs 411, when organizing the seedling trays 50 using the upper surface of the hopper lid, it is easy to fix the empty seedling trays 50 and it becomes easy to stack the empty seedling trays 50. Therefore, collection work can be facilitated.

Next, the third configuration example is of a size in which the seedling raising pot 51 of the empty seedling tray 50 is housed, which protrudes from the upper surface of each of the left and right pair of the left third hopper lid 420L and the right third hopper lid 420R to a predetermined height. This is an example in which the first enclosure member 421, which is a substantially rectangular frame body in a plan view, is provided (see FIGS. 13A to 13D). Long-side end portions 53a (Fig. 4(a), Fig. 4 (Fig. 4(a), Fig. 4(a)) in which the tip portion of the portion of the first enclosure member 421 protruding to a predetermined height is along the long sides 53L, 53R on both left and right sides of the empty seedling tray 50. (b)) and the like to support the outer peripheral portion.

Further, in the third configuration example, the first enclosing member 421 is arranged near the outside of the machine on the upper surfaces of the left and right pair of the left third hopper lid 420L and the right third hopper lid 420R (FIG. 13 ( a) and FIG. 13C).

FIG. 13A is a schematic plan view of the left third hopper lid 420L for explaining the third configuration example, and FIG. 13B is a left third hopper lid 420L shown in FIG. 13A. It is a schematic side view of. Note that, in FIG. 13A, a right fourth hopper lid 430R of a fourth configuration example described later is shown at the same time.

13C is a schematic plan view of the right third hopper lid 420R for explaining the third configuration example, and FIG. 13D is the right third hopper shown in FIG. 13C. It is a schematic side view of a lid 420R. In addition, in FIG.13(c), the left 4th hopper lid 430L of the 4th structural example mentioned later is shown simultaneously.

Thus, by providing the first enclosure member 421, when the seedling tray 50 is arranged using the upper surface of the hopper lid, it is easy to fix the empty seedling tray 50, and the empty seedling tray 50 is stacked. Since it becomes easier, collection work can be facilitated.

Also in the case of this configuration, since the tip portion of the portion of the first enclosure member 421 protruding to the predetermined height supports the seedling tray 50, it is difficult for the upper surface of the hopper lid to be scratched or the like.

Further, since the first enclosure member 421 is arranged near the outside of the machine on the upper surfaces of the left and right pair of left third hopper lid 420L and right third hopper lid 420R, it is easy to secure a working space. The seedling tray 50 can be collected on the outside of the machine, and the operator's work can be facilitated because the access to the supplementary seedling mounting frame 15 is closer to the outside of the machine.

Next, in the same manner as the third configuration example described above, the fourth configuration example is an empty seedling protruding from the upper surface of each of the left and right pair of the left fourth hopper lid 430L and the right fourth hopper lid 430R to a predetermined height. This is an example in which the second enclosure member 431, which is a frame body having a substantially rectangular shape in a plan view having a size capable of accommodating the seedling raising pot 51 of the tray 50, is provided. Long-side end portions 53a (Fig. 4(a), Fig. 4 (Fig. 4(a), Fig. 4( (b)) and the like to support the outer peripheral portion.

However, in the fourth configuration example, unlike the above-described third configuration example, the second enclosure member 431 is moved closer to the inside of the machine on the upper surfaces of the left and right pair of the left fourth hopper lid 430L and the right fourth hopper lid 430R. (FIGS. 13A and 13C).

Thus, by providing the second enclosure member 431, when the seedling tray 50 is arranged using the upper surface of the hopper lid, the empty seedling tray 50 can be easily fixed, as in the third configuration example. Since it becomes easy to stack the empty seedling trays 50, collection work can be facilitated.

Also in the case of this configuration, since the tip portion of the portion of the second enclosure member 431 protruding to the predetermined height supports the seedling tray 50, it is difficult for the upper surface of the hopper lid to be scratched or the like.

Further, since the second enclosure member 431 is arranged close to the inside of the machine on the upper surface of each of the left and right pair of the left fourth hopper lid 430L and the right fourth hopper lid 430R, Since the access is almost uniform, the work of the operator can be facilitated.

The hopper 40 of this embodiment is an example of the hopper of the present invention. The pair of left and right first hopper lids 400L, 400R to the pair of left and right fourth hopper lids 430L, 430R of the present embodiment are examples of the lid portion of the hopper of the present invention. Further, the first rib 401, the second rib 411, the first enclosing member 421, and the second enclosing member 431 of the present embodiment correspond to an example of the convex member of the present invention.

Next, the mounting structure of the rotor stay 110 that holds the frame of the ground leveling rotor 100 in the riding rice transplanter 1 will be described with reference to FIG. 14.

FIG. 14 is a schematic partially enlarged side view of the lower part of the planting apparatus 200 and its periphery for explaining the mounting configuration of the rotor stay 110 that holds the frame of the ground leveling rotor 100.

In the riding rice transplanter 1 of the present embodiment, as shown in FIG. 14, the rotor stay 110 is configured to protrude downward and forward from the planting part frame 240 that connects the planting apparatus 200.

As a result, the pillars were erected on the frame that overhanged to the left and right from the suspension base of the planting section, and the rotor was suspended. Compared to, it has a simpler structure and achieves both weight reduction and rigidity improvement.

Next, in the riding rice transplanter 1, the mounting structure of the motor stay 510 for mounting the motor 500 that moves up and down the leveling rotor 100 will be described with reference to FIG. 14.

FIG. 15 is a schematic partially enlarged side view of the lower part of the planting apparatus 200 and its periphery for explaining the mounting configuration of the motor stay 510 for mounting the motor 500 that moves up and down the ground leveling rotor 100.

In the riding rice transplanter 1 of the present embodiment, as shown in FIG. 15, the motor stay 510 is configured to be attached to the front side of the planting part frame 240, like the rotor stay 110 described above.

As a result, the attachment of the components of the leveling rotor is integrated in the planting part frame 240 as compared with the conventional configuration in which the number of parts is increased and the weight is increased because the elevation of the leveling rotor is manual. As a result, significant weight reduction, reduction in the number of parts, and increased strength can be realized at the same time.

Next, in the riding rice transplanter 1, when the motor 500 raises and lowers the leveling rotor 100, the connection configuration of the raising and lowering gear 520 and the raising and lowering arm 530 will be described with reference to FIGS. 16A and 16B. To do.

FIG. 16A is a partially enlarged schematic side view of the leveling rotor 100 for explaining the connection configuration of the elevating gear 520 and the elevating arm 530, and FIG. 16B is an articulated arm 540 and center rotor 120. FIG. 6 is a partially enlarged schematic side view of the grounded rotor 100 for explaining a pulling spring 550 provided between and.

In the riding rice transplanter 1 of the present embodiment, as shown in FIGS. 16(a) and 16(b), in the configuration in which the grounding rotor 100 is lifted and lowered by the motor 500, between the lift gear 520 and the lift arm 530. An articulated arm 540 is provided in the.

The articulated arm 540 is rotatably connected to the upper end of the elevating arm 530 by the first connecting shaft 541. An arcuate elongated hole 542 is formed on the rear end side of the articulated arm 540 (FIGS. 16A and 16B ).

The elevating gear 520 has a substantially fan shape, and a portion corresponding to the main point of the fan shape is rotatably connected to the articulated arm 540 by the second connecting shaft 543 (FIG. 16). (A), FIG. 16(b)). Further, a slide pin 521 is erected on a side surface of the lifting gear 520 at a position where it is loosely fitted and connected to an arc-shaped long hole 542 formed in the articulated arm 540 (FIGS. 16A and 16). (B)).

With the above configuration, when the leveling rotor 100 is pushed up by the unevenness of the field scene, even if the push-up load or overload acts on the articulated arm 540, the articulated arm 540 is shown in FIG. 16(b). In (side view), the second connecting shaft 543 rotates clockwise, and the elongated hole 542 formed in the articulated arm 540 also rotates in the same manner, and is erected on the side surface of the elevating gear 520. Since the slide pin 521 relatively slides in the elongated hole 542 toward the upper end side of the elongated hole 542, transmission of the above load or overload to the elevating gear 520 side is reduced.

As a result, when the leveling rotor 100 is pushed up due to unevenness in a field scene, the thrusting load or overload can be released through the articulated arm 540, and durability of the leveling rotor 100, the elevating gear 520, and the like can be improved. Can be secured.

Further, in the riding rice transplanter 1 of the present embodiment, as shown in FIG. 16B, the pull-up spring 550 of the center rotor 120 is hooked on the articulated arm 540.

Thus, as compared with the conventional configuration in which the lifting spring of the center rotor is hooked on the elevating arm, by hooking the lifting spring 550 on the articulated arm 540, the center rotor 120 can be pulled in a direction closer to the vertical direction. I can. Further, since the grounding rotor 100 is caught by the arm that moves up and down, the hook position of the pull-up spring 550 changes in proportion to the lifting and lowering of the grounding rotor 100, so that the pulling angle and the width of load displacement are reduced.

Next, in the riding rice transplanter 1, the configuration of the above-described feed claw 211 (see FIG. 5) and its peripheral members will be further described with reference to FIGS. 17(a) and 17(b).

FIG. 17A is a schematic partial enlarged side view of the configuration of the feed claw 211 and its peripheral members viewed from the left side, and FIG. 17B is a feed claw 211 and its peripheral members shown in FIG. 17A. FIG. 3 is a schematic partially enlarged rear view of the configuration of FIG.

In the riding rice transplanter 1 of the present embodiment, as shown in FIGS. 17(a) and 17(b), one end portion 610a of the rotary spring 610 mounted around the rotary shaft 600 of the feed claw 211 has In the spring hook portion 211a provided at the base of the feed claw 211 that abuts and constantly presses in the I direction, the tip end of the spring hook portion 211a abuts on the protrusion 621 provided at the upper end of the arm plate 620. It is formed in a protruding shape so that it can be contacted.

The arm plate 620 is a member that swings the feed claw 211 in the vertical direction (see arrow B in FIG. 5 and FIG. 17A) at a predetermined timing, and is connected to the feed claw 211 via the rotation shaft 600. ing.

Further, the feed claw 211 is constantly pressed by the one end portion 610a of the rotation spring 610 in the I direction via the spring hook portion 211a.

As a result, for example, when the rotation spring 610 provided for pressing the feed claw 211 is damaged, the pressing force on the spring hook portion 211a is lost, and the feed claw 211 is, as shown in FIG. Although it rotates in the direction of arrow J around the rotation shaft 600 as the center of rotation, the rotation is stopped at the position where the tip of the spring hook portion 211a contacts the protrusion 621 of the arm plate 620 (FIG. 17(a)). ) Of the feed claw 211 indicated by the chain double-dashed line).

In other words, even if the turning spring 610 is damaged, the tip of the spring hook portion 211a contacts the protrusion 621 of the arm plate 620 to regulate the turning range of the feed pawl 211, so that the feed pawl 211 can rotate greatly. It can be prevented from moving and interfering with other members to cause secondary damage.

In addition, although the pair of left and right rail guide members 310L and 310R is fixed straight along the longitudinal direction of the pair of left and right rail members 330L and 330R in the above embodiment (FIG. 7B). However, not limited to this, for example, as shown in FIG. 11, a pair of left and right rail guide members 310L and 310R are fixed while being inclined at a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members 330L and 330R, You may fix it so that it may approach the conveyance route side of the seedling tray 50. As a result, when the pair of left and right rail guide members 310L and 310R are in the non-retracted posture (see the left rail guide member 310L shown by the chain double-dashed line in FIG. 9), the rail guide second portion 314 is moved in the longitudinal direction. Since the rear end side along the side edge 314c is located further inside the transport path of the seedling tray 50, even if the seedling tray 50 is deformed and the shape of the seedling tray 50 varies, a pair of left and right sides is formed. The rail guide members 310L and 310R can easily catch the bottom portion 51b of the seedling raising pot 51 of the seedling tray 50, and the pair of left and right rail members 330L and 330R can be more reliably rotated upward (see arrow F in FIG. 9). Therefore, the pair of left and right rail members 330L and 330R can be more reliably switched from the second posture to the first posture. FIG. 11 is a partially enlarged view showing another configuration example in which the pair of left and right rail guide members 310L and 310R are fixed by inclining at a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members 330L and 330R. It is a schematic plan view showing a state in which the rail member 330L is in the second posture.

Further, in the above-described embodiment, as the seedling tray storage basket 350, the empty seedling tray 50 that slides on the pair of left and right rail members 330L and 330R and is conveyed to the front end portion, and then slides, is moved. A structure having a portion for receiving the inside posture while maintaining it substantially, and having a portion for allowing the operator to pull the seedling trays 50 stacked in the portion forward to the forward posture to change the posture. However, the present invention is not limited to this, and for example, as the seedling tray storage basket 350, an empty seedling tray 50 that is dropped after being transported to the front end while sliding on the pair of left and right rail members 330L and 330R, It may be configured to have a portion that receives the posture so as to be in a forwardly raised posture as compared with the posture during the sliding movement. Even in the case of this configuration, similarly to the above, even when the riding rice transplanter 1 is in the field planting operation (at this time, the position of the planting device 200 is lowered), a plurality of the seedling trays 50 stacked together are stacked. It becomes easy to collect all the seedlings from the seedling tray storage basket 350.

Further, in the above-described embodiment, the pair of left and right rail guide members 310L and 310R are brought into contact with the bottom portion 51b of the seedling tray 50 that is transported to the downstream side of the transport path to rotate, so that the non-withdrawal posture is maintained. The configuration in which the pair of left and right rail members 330L and 330R shifts from the second posture to the first posture in conjunction with shifting to the retracted posture has been described, but the present invention is not limited to this, and for example, a pair of left and right rail members 330L and 330R As long as the configuration is such that the second posture can be shifted to the first posture, a pair of left and right rail guide members are used instead of the pair of left and right rail guide members 310L and 310R. It is also possible to adopt a configuration in which the non-withdrawal posture is changed to the withdrawal posture by being abutted and rotated by (see reference numeral 53a in FIGS. 4A and 4B). In addition, in the case of this configuration, while the long side end portions 53a along the long sides 53L and 53R on both the left and right sides of the seedling tray 50 are in contact with the another rail guide member, a pair of left and right rail members 330L, 330R can maintain the first posture. In the case of this configuration, the long-side end portions 53a on both the left and right sides of the seedling tray 50 are examples of predetermined portions on the left and right sides of the seedling tray of the present invention.

Further, in the above-described embodiment, the pair of left and right rail members 330L and 330R is configured to shift from the first posture to the second posture by the action of the weight of the seedling tray 50 and the own weight of the pair of left and right rail members 330L and 330R. However, the present invention is not limited to this, and, for example, the rear end portions of the pair of left and right rail members 330L and 330R and the pair of left and right rail member rear side support stays 342L and 342R are rotated via a torque spring (not shown). It may be movably connected. Specifically, the rear end of the bar-shaped member 333 is inserted into the hole of the spiral portion of the torque spring having a spiral portion between the front end portion of the winding start and the rear end portion of the winding end, and A front end portion of the spring is fixed to a rear end portion of the first rail portion 332a, and a rear end portion of the torque spring is fixed to a pair of left and right rail member rear support stays 342L and 342R. By providing the spring, when the pair of left and right rail guide members 310L and 310R are in the non-evacuated posture, the seedling tray 50 that has been transported to the vicinity of the terminal end portion 212b of the transport support bar 212 of the downstream transport path 201b. The left and right bottom parts 51b and the like contact side edges 314c along the longitudinal direction of the rail guide second part 314 (see FIGS. 5 and 9), so that the pair of left and right rail members 330L and 330R are When the posture is changed from the two postures to the first posture, the rotational torque for returning from the first posture to the second posture, that is, the urging force for returning from the first posture to the second posture has a pair of left and right rail members 330L, 330R. It is a configuration that occurs for.

As a result, in addition to the action of the weight of the seedling tray 50 and the own weight of the pair of left and right rail members 330L and 330R, the above-described rotational torque (biasing force) by the torque spring also acts, so that the pair of L left and right rail members 330L, The 330R rotates downward (see the arrow G in FIG. 9) and instantaneously shifts from the first posture to the second posture.

Further, by providing such a torque spring, the change of the pair of right rail members 330L, 330R from the first posture to the second posture is assisted, so that, for example, the posture of the pair of right rail members 330L, 330R is Even if mud or the like adheres to the rotating part that rotates when changing the temperature and the seedling tray 50, the rotating operation is stable.

INDUSTRIAL APPLICABILITY The work vehicle according to the present invention is useful as a work vehicle capable of stacking seedling trays more neatly than in the conventional case.

1 Passenger rice transplanter 2 Car body 3 Front wheel 4 Rear wheel 6 Main frame 7 Transmission case 8 Front wheel final case 9L Left rear wheel gear case 9R Right rear wheel gear case 10 Pilot seat 11 Steering handle 30 Lifting link device 40 Fertilizer device 50 Seedling tray 100 Ground leveling Rotor 200 Planting device 210 Seedling tray transfer device 220 Seedling planting part 230 Float 300 Collection device 310L Left rail guide member 310R Right rail guide member 330L Left rail member 330R Right rail member 350 Seedling tray storage basket

Claims (6)

The running car body (2),
A work vehicle comprising: a planting device (200) which is connected to a rear portion of the traveling vehicle body (2) and takes out the pot seedlings from a seedling tray (50) in which pot seedlings are arranged, and which is planted in a field.
The planting device (200) is
A seedling tray transfer device (210) for transferring the supplied seedling tray (50) from the upstream side to the downstream side of the transfer path;
A seedling planting section (220) which is provided in the middle of the transport path and takes out the pot seedlings from the transported seedling tray (50) and plants them in the field.
A collection device (300) for collecting the pot seedlings in the seedling planting section (220) and collecting the seedling tray (50) sent out from the end of the transport path,
The recovery device (300) is
The seedling tray that has arrived at the end portion of the transport path is guided from the end portion to the front, while the front end portion of the seedling tray is guided while maintaining a predetermined posture in which the front end portion is higher than the rear end portion. A guide part (310L, 310R, 330L, 330R) for dropping the seedling tray from the predetermined posture,
And a seedling tray accommodating portion (350) for receiving and accommodating the seedling tray falling from the guide portion (310L, 310R, 330L, 330R),
Bottom of the seedling tray accommodating unit, the seedling tray coming to the fall, and has a portion which receives as constituting a by Ri front rising posture as compared with the predetermined orientation, or by the falling a work vehicle of the seedling tray is received, the have a predetermined posture can be changed by Ri forwardly upward posture as compared with the site, and wherein the. The guide portions (310L, 310R, 330L, 330R) have rail members (330L, 330R) capable of supporting the left and right end portions of the seedling tray from the side surface side and the lower surface side and being able to guide forward,
The work vehicle according to claim 1, wherein a front side width of a portion of the rail member that can support the seedling tray is formed narrower than a rear side width. The guide portions (310L, 310R, 330L, 330R) are rail members (330L, 330R) capable of supporting the left and right end portions of the seedling tray from the side surface side and the lower surface side and being able to guide forward, and the rail member. Rail guide members (310L, 310R) that are coupled to (330L, 330R) and can rotate the rail member.
The rail members (330L, 330R) can take a first posture capable of supporting the seedling tray and a second posture not capable of supporting the seedling tray,
While the rail guide members (310L, 310R) are in contact with the predetermined portions on the left and right sides of the seedling tray, the rail guide members take a retracted posture to retract from the movement path of the predetermined portions on the left and right sides, and It takes a non-retracted posture while the predetermined parts on both the left and right sides are not in contact,
While the rail guide members (310L, 310R) are in the retracted posture, the rail members (330L, 330R) continue to take the first posture, and the rail guide members (310L, 310R) are in the non-retracted posture. The work vehicle according to claim 1, wherein the rail member (330L, 330R) assumes the second posture when the above is taken. The bottom portion of the seedling tray accommodating portion has the changeable portion,
The bottom portion of the seedling tray accommodating portion,
A first support portion (352A1, 352L1, 352R1) for supporting the rear end side of the seedling tray from below,
A second support portion (353a) located on the front side of the first support portion and supporting the seedling tray from below;
It is possible to change the posture to the forward rising posture as compared with the posture of the seedling tray which is located between the first support portion and the second support portion and is supported by the first support portion and the second support portion. The work vehicle according to any one of claims 1 to 3, further comprising a formed third support portion (354A, 354B). The work vehicle according to claim 4, wherein the posture of the seedling tray supported by the first support portion and the second support portion is parallel to the predetermined posture in a side view. It is equipped with a fertilizer application device for applying the fertilizer stored in the hopper (40) to the field,
A convex member (401, 411, 421, 431) is provided at a position capable of supporting the seedling tray on the upper surface of the lid portion (400L, 400R, 410L, 410R, 420L, 420R, 430L, 430R) of the hopper. The work vehicle according to any one of claims 1 to 5, wherein:

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