JP6849129B2 - Work vehicle - Google Patents

Description

The present invention relates to a work vehicle that works in the field.

As an example of a seedling transplanting machine of a conventional work vehicle, a resin seedling tray in which a large number of raised pot seedlings are arranged in the vertical and horizontal directions is supplied, and a planting device for taking out pot seedlings from the seedling tray and planting them in a field is provided. A configuration connected to the rear part of the vehicle body is known (see, for example, Patent Document 1).

Further, in the above-mentioned conventional seedling transplanter, the empty seedling tray after all the pot seedlings are 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. , It is configured to be housed in a storage case made of rod-shaped members.

Japanese Unexamined Patent Publication No. 2016-101129

However, according to the above-mentioned 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, so that the seedling tray is not provided. The front end of the seedling hangs down 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. There was a problem that they could not be aligned and stacked.

In view of such problems of the conventional work vehicle, it is an object of the present invention to provide a work vehicle capable of arranging and stacking seedling trays more neatly as compared with the conventional one.

In order to solve the above problems, the present invention according to claim 1 is
Running body (2) and
A work vehicle provided with a planting device (200) connected to the rear portion of the traveling vehicle body (2) and taking out the pot seedlings from a seedling tray (50) on which pot seedlings are arranged and planting them in a field.
The planting device (200)
A seedling tray transporting device (210) that transports the supplied seedling tray (50) from the upstream side to the downstream side of the transport path, and
A seedling planting portion (220) provided in the middle of the transport path, and the pot seedlings are taken out from the seedling tray (50) to be transported and planted in the field.
The seedling planting portion (220) has a collection device (300) for collecting the seedling tray (50) from which the pot seedlings are taken out and sent out from the terminal portion of the transport path.
The recovery device (300)
Guides (310L, 310R, 330L, 330R) that guide the seedling tray that has come to the terminal portion of the transport path forward from the terminal portion and drop the guided seedling tray.
A seedling tray accommodating portion (350) for receiving and accommodating the seedling tray (50) falling downward from the guide portion (310L, 310R, 330L, 330R).
The seedling tray (50) has a seedling tray holding portion (301) for preventing the seedling tray (50) from slipping off from the guide portion (310L, 310R, 330L, 330R) in the left-right direction, and accommodates the seedling tray. The bottom of the seedling tray (350) has a portion where the front end portion of the seedling tray (50) can be changed to a posture that is raised forward from the rear end portion, and the front end portion of the seedling tray (50) is rearward. The seedling tray holding portion (301) is formed with a front portion (301a) in which the seedling tray (50) does not interfere with the seedling tray holding portion (301) when the posture is changed so as to rise forward from the end portion. It is a work vehicle characterized by.

Further, the present invention according to claim 2
The seedling tray (50) does not interfere with the guide portions (310L, 310R, 330L, 330R) when the front end portion of the seedling tray (50) is changed to a posture that is raised forward from the rear end portion. The work vehicle according to claim 1, wherein the front end portion (332b1) cut out in the guide portion (310L, 310R, 330L, 330R) is formed in the guide portion (310L, 310R, 330L, 330R).

Further, the present invention according to claim 3
The front portion (301a) is viewed from the side of the machine body and is in a forward-raising posture. The seedling tray (50) is formed by arranging a large number of seedling raising pots (51) in the vertical and horizontal directions, and is formed by the seedling raising pod (51). When the periphery of the bottom portion (51b) and the guide portion (310L, 310R, 330L, 330R) come into contact with each other, the posture is switched to support the seedling tray (50), and the periphery of the bottom portion (51b) of the seedling raising pod (51). The work vehicle according to claim 1 or 2, wherein when the guide portions (310L, 310R, 330L, 330R) do not come into contact with each other, the seedling tray (50) is switched to a posture that does not support the seedling tray (50).

Moreover, the present invention according to claim 4
The work vehicle according to claim 3, wherein the periphery of the bottom portion (51b) of the seedling raising pod (51) is the growing pod (51) arranged on both left and right sides of the seedling tray (50). Is.

According to the first aspect of the present invention, the seedling trays can be neatly arranged and stacked in the seedling tray accommodating portion as compared with the conventional case.

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

Further, even when a plurality of seedling trays housed in the seedling tray storage portion are taken out at the same time, the seedling tray can be smoothly taken out without interfering with the seedling tray holding portion.

Further, according to the second aspect of the present invention, in addition to the effect of the present invention of the first aspect, when the seedling trays stacked in the seedling tray accommodating portion are taken out in a forward-raised posture, the seedling trays and the rail members Workability is improved because interference is reduced and it becomes easier to take out more reliably.

Further, according to the third aspect of the present invention, in addition to the effect of the present invention according to the first or second aspect, the posture of the rail member can be changed with a simple configuration.

In addition, since the front part is viewed from the side of the machine and is in a forward-raised posture, the seedling tray does not interfere with the seedling tray holding part and is smooth even when a plurality of seedling trays housed in the seedling tray storage part are taken out at the same time. Can be taken out.

Further, according to the fourth aspect of the present invention, in addition to the effect of the third aspect of the present invention, the posture of the rail member can be changed with a simple configuration.

Side view of a passenger rice transplanter according to an embodiment of the present invention Top view of the 8-row rice transplanter shown in FIG. An enlarged side view of the rear part of the passenger rice transplanter of the present embodiment shown in FIG. (A): Bottom view of a part of the seedling tray in the passenger rice transplanter of the present embodiment, (b): Side view of a part of the seedling tray seen from the short side. Schematic side view showing a state of a seedling tray being transported along a transport path curved in a substantially U shape in a side view in the passenger rice transplanter of the present embodiment. A perspective view of the recovery device in the passenger rice transplanter of the present embodiment as viewed from the left rear side. (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 the present 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 the seedling tray cannot be supported (this posture is referred to as a second posture in the present specification). c): Cross-sectional view taken along line CC on line CC shown in FIG. 7 (b), (d): Cross-sectional view taken along line DD on line DD shown in FIG. 7 (b). , (E): Cross-sectional view taken along line EE in line EE shown in FIG. 7 (a). A perspective view of the left rail guide member when viewed from the left rear side of the pair of left and right rail guide members arranged in the passenger rice transplanter of the present embodiment. Schematic partially enlarged rear view of the left rail member rear support stay arranged on the left side of the recovery device in the passenger rice transplanter of the present embodiment as viewed from the rear to the front. Schematic plan view showing a state in which a pair of left and right rail members are in the first posture in the recovery device of the passenger rice transplanter of the present embodiment. A partially enlarged view showing another configuration example in which a pair of left and right rail guide members in the passenger rice transplanter of the present embodiment are fixed by being tilted by a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members. (A): Schematic plan view of the left first hopper lid for explaining the first configuration example of the upper surface of the hopper lid of the fertilizer application device, (b): The left first hopper lid shown in FIG. 12 (a). Schematic side view, (c): Schematic plan view of the left second hopper lid for explaining a second configuration example of the upper surface of the hopper lid of the fertilizer application device, (d): Left second shown in FIG. 12 (c). 2 Schematic side view of the hopper lid (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 application device, (b): 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 a third configuration example, (d): Schematic side view of the right third hopper lid shown in FIG. 13 (c). Schematic partial enlarged side view of the lower part of the planting device and its periphery for explaining the mounting configuration of the rotor stay holding the frame of the ground leveling rotor in the passenger rice transplanter of the present embodiment. A schematic partial enlarged side view of the lower part of the planting device and its periphery for explaining the mounting configuration of the motor stay for mounting the motor for raising and lowering the ground leveling rotor in the passenger rice transplanter of the present embodiment. (A): Partially enlarged schematic side view of the leveling rotor for explaining the connection configuration of the elevating gear and the elevating arm in the passenger rice transplanter of the present embodiment, (b): Between the articulated arm and the center rotor. Partially enlarged schematic side view of a leveling rotor to explain the provided pull-up spring (A): Schematic partially enlarged side view of the configuration of the feed claw and its peripheral members as viewed from the left side in the passenger rice transplanter of the present embodiment, (b): the feed claw and its peripheral members shown in FIG. 17 (a). Enlarged rear view of the schematic part of the configuration seen from the back

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

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

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

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

As shown in FIG. 1, in the passenger rice transplanter 1 of the present embodiment, the planting device 200 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via the elevating link device 30, and fertilizer is applied to the rear upper side of the traveling vehicle body 2. A hopper 40 of the device is provided.

The passenger rice transplanter 1 is a four-wheel drive type work vehicle provided with a pair of left and right front wheels 3 and a pair of left and right rear wheels 4 on a traveling vehicle body 2.

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

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 ground leveling rotor drive shaft 101 to rotate the ground leveling rotor 100 (see FIG. 3).

Further, the upper portion of the engine 5 is covered with the engine cover 13, and the driver's seat 10 is installed on the engine cover 13. A steering handle 11 for steering and operating the front wheels 3 is provided in front of the driver's seat 10, and the front side thereof is covered with a front cover 12. Further, horizontal floor steps 14 are provided on both the left and right sides of the lower ends of the engine cover 13 and the front cover 12, so that the seedling tray, fertilizer, and the like can be easily replenished.

Further, on both the left and right sides of the steering handle 11 and the front cover 12, replenishment seedling mounting frames 15 for loading a large number of seedling trays 50 are arranged, and are preliminarily placed on the replenishment seedling mounting frames 15. The seedling tray 50 that has been prepared can be carried to the starting end (upstream side) of the transport path 201 of the planting device 200 connected to the rear while being taken out by the operator during the planting work, and can be sequentially replenished. Is.

The transport path 201 has a configuration in which one seedling tray 50 is sequentially transported per two-row planting row, and pot seedlings are supplied to each seedling planting section 220, which will be described later, for double-row planting. Therefore, in the passenger rice transplanter 1 for eight-row planting, four transport paths 201, four seedling planting portions 220, and the like are provided in the left-right width direction in a plan view in order to realize multi-row planting (FIG. 2). reference).

That is, the above-mentioned planting device 200 includes (1) the seedling tray transport device 210 for transporting the seedling trays 50 to be sequentially supplied from the upstream side to the downstream side of the transport path 201, and (2) the transport path 201. The seedling planting section 220, which is provided on the way and takes out the pot seedlings from the seedling tray 50 and is planted in the field, and (3) the pot seedlings are taken out from the seedling planting section 220 and sent 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 rows.

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 as viewed from the short side.

That is, as shown in FIGS. 4A and 4B, the seedling tray 50 is a flat surface made of synthetic resin formed by arranging a large number of seedling raising pots 51 in the vertical and horizontal directions. It is a plate-shaped member having a rectangular shape in terms of view, and can be curved in a substantially U shape in a side view on a transport path (see FIG. 5). FIG. 5 is a schematic side view showing a state of the seedling tray 50 being transported along the transport path 201 curved in a substantially U shape in a side view.

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

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

Further, 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 the left and right side edges of the width of the seedling tray 50 in the lateral direction. A substantially square feed hole portion 52 is formed in the portion at regular intervals along the long sides 53L and 53R on both the left and right sides.

The feed claw 211 (see FIG. 5) of the seedling tray transport device 210 described above engages with the feed hole portion 52 and moves up and down at a predetermined timing (see arrow B in FIG. 5) to transport the seedling tray 50. Is intermittently performed for each row of each seedling raising pot 51.

Further, the above-mentioned seedling planting portion 220 includes an extrusion pin (not shown) for simultaneously inserting the seedling raising pots 51 in a horizontal row of the seedling tray 50 from the bottom 51b side to take out the pot seedlings. Of the one horizontal row of pot seedlings extruded by the extrusion pin, there is a seedling feeding belt (not shown) that transports the right half of the pot seedlings to the right and the left half of the pot seedlings to the left. Then, by rotating the planting claws 221 rotatably arranged below the left and right sides of the seedling feeding belt, each pot seedling transported to both the left and right sides by the seedling feeding belt is sequentially planted in the field. is there.

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

Further, the above-mentioned collection 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 sent out from the terminal portion of the transport path 210b on the downstream side. The seedling tray 50 in an empty state is sequentially collected (see FIG. 5). The recovery device 300 will be further described later.

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

That is, as shown in FIG. 5, the transport path 201b on the downstream side is located at the center position of the left and right width of the seedling tray 50, which supports the seedling tray 50 to be transported by contacting the surface on the opening 51a side. The transport support bars 212 arranged at three locations near both 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 widths of the surface on the bottom 51b side of the seedling tray 50 (FIG. 4 (FIG. 4). The transport guide bar 213 is provided so as to be insertable in a) and FIG. 4 (b).

The transport support bar 212 and the transport guide bar 213 are arranged in a state of maintaining a predetermined interval in a side view, and are directed toward the recovery device 300 side in order to guide the seedling tray 50 to the recovery device 300 side. It is curved diagonally upward on the front side. Further, the terminal 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 part of the transport path 201a on the upstream side, and the terminal portion 213b of the transport guide bar 213 is upstream. It is fixed to a transport guide bar support stay 214 (see FIG. 5) whose one end side is fixed to the transport path 201a on the side.

The traveling vehicle body 2 of the present embodiment corresponds to an example of the traveling vehicle body of the present invention. Further, the seedling tray 50 of the present embodiment corresponds to an example of the seedling tray of the present invention. Further, the planting device 200 of the present embodiment corresponds to an example of the planting device of the present invention, and the seedling tray transporting device 210 of the present embodiment corresponds to an example of the seedling tray transporting 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 transport path 201b on the downstream side will be further described mainly with reference to FIGS. 5 to 10.

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

Further, FIG. 7A shows a posture in which the left rail member 330L arranged on the left side of the recovery device 300 can support the seedling tray 50 (in the present specification, this posture is referred to as a first posture). 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 (in the present specification, this posture is referred to as a second posture). It is a schematic plan view which shows the state.

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

7 (c) is a cross-sectional view taken along the line CC on the line CC shown in FIG. 7 (b), and FIG. 7 (d) is a cross-sectional view taken along the line CC shown in FIG. 7 (b). It is a cross-sectional view taken along line DD on line D, and FIG. 7 (e) is a cross-sectional view taken along line EE on line EE shown in FIG. 7 (a). In FIGS. 7 (a) to 7 (e), a pair of left and right rail guide members 310L and 310R are shown by alternate long and short dash lines.

Further, FIG. 8 is a perspective view of the left rail guide member 310L among the pair of left and right rail guide members 310L and 310R arranged in the passenger rice transplanter 1 when viewed from the left rear side.

Further, FIG. 9 is a schematic partially enlarged rear view of the left rail member rear support stay 342L arranged on the left side of the recovery device 300 as viewed from the rear to the front. In FIG. 9, the left rail member 330L is in the first posture and the left rail guide member 310L is in the retracted posture (shown by the solid line), and the left rail member 330L is in the second posture and the left rail guide member 310L. At the same time, the state in which is in a non-evacuated posture (indicated by a two-dot chain line) is shown.

Further, 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 the right rail guide member 310R is in the retracted posture, the right rail guide member 310R is also in the non-retracted posture.

Further, in the specification of the present application, the pair of left and right rail guide members 310L and 310R are in the retracted posture, that is, the pair of left and right rail guide members 310L and 310R are located at or near the left and right ends of the seedling tray 50. It means that the bottom 51b and the like are in a posture that does not exist in the movement path, and that the pair of left and right rail guide members 310L and 310R are in the non-retracted posture means that the pair of left and right rail guide members are in a non-retracted posture. It means that the 310L and 310R are in a posture of 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.

As shown in FIGS. 5 and 6, the recovery device 300 has a recovery device 300 as shown in FIGS.
(1) A large number of conical protrusions 321 that engage with the opening 51a of the seedling tray 50 sent out from the terminal portion 212b of the transport support bar 212 of the transport path 201b on the downstream side are arranged on the surface of the cylindrical roller member. By intermittently rotating and driving the feed claw 211 in synchronization with the vertical movement timing, the empty seedling tray 50 is transported to the collection device 300 side, and is rotatably arranged on the rear end side of the collection device 300. Conveying roller 320 and
(2) The long side ends 53a along the long sides 53L and 53R on both the left and right sides of the seedling tray 50 sent out from the transport roller 320 are supported and guided forward (corresponding to the first posture), and the guidance is provided. A pair of left and right rail members 330L, which are configured so that the seedling tray 50 that has come can be dropped at a predetermined timing (corresponding to the second posture) and has a substantially L-shaped long plate cross section in the direction perpendicular to the longitudinal direction. , 330R (see FIGS. 7 (a) to 7 (e)),
(3) A pair of left and right rail members 330L, 330R that are welded and fixed so as to protrude rearward at the rear ends, and are transported to the vicinity of the end portion 212b of the transport support bar 212 on the downstream transport path 201b. When the bottoms 51b and the like at both left and right ends on the front end side of the seedling tray 50 come into contact with the member, the member starts to rotate, shifts from the non-retracted posture to the retracted posture, and the pair of left and right rail members 330L. The 330R is switched to the first posture capable of supporting the seedling tray 50, and the members are not brought into contact with the member by the periphery of the long side edge portions 53b and the bottom portion 51b at both left and right ends of the seedling tray 50. A pair of left and right rail guides that rotate in the opposite direction to the motion, shift from the retracted posture to the non-retracted posture, and can switch the pair of left and right rail members 330L and 330R to the second posture that cannot support the seedling tray 50. Members 310L, 310R,
(4) A seedling tray holder for preventing the seedling tray 50 from shifting in the left-right direction and falling off from the rail members 330L and 330R while being conveyed on the pair of left and right rail members 330L and 330R. With stick 301
(5) A pair of left and right rail members front support stays 341L and 341R that rotatably support the front side of both ends of the elongated plate shape of the pair of left and right rail members 330L and 330R in the longitudinal direction.
(6) A pair of left and right rail members, rear support stays 342L, 342R, which rotatably support the rear side of both ends of the elongated plate shape of the pair of left and right rail members 330L, 330R in the longitudinal direction.
(7) The seedling tray storage cage 350, which receives and stores the seedling tray 50 falling from the pair of left and right rail members 330L and 330R, is mainly formed of a wire rod having a circular cross section or the like.

Further, 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 transport path 201a on the upstream side of the seedling tray transport device 210, and the pair of left and right rail member rear support stays 342L and 342R. The lower end of the seedling tray storage cage 350 is fixed to the rear end of the seedling tray storage cage 350.

Further, 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 the portion corresponding to the short side of the L-shape is the seedling tray. It is a first rail portion 332a (see FIG. 7A) that can support the long side end portions 53a (see FIG. 4B) on the bottom surface side of both left and right ends of the 50 from below, and has an L-shape thereof. 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 ends of the pair of left and right rail members 330L and 330R are brought into contact with the front end edges on both the left and right sides of the seedling tray 50, so that the seedling tray 50 is brought into contact with the front ends of the pair of left and right rail members 330L and 330R, respectively. A wall-shaped seedling tray stopper 332c orthogonal to the first rail portion 332a and the second rail portion 332b is provided to prevent the portion from jumping forward. Further, the corner portion 332c1 of the seedling tray stopper 332c is notched diagonally (see FIG. 7C). As a result, the pair of left and right rail members 330L and 330R are in the second posture (see FIG. 9), and even when a plurality of seedling trays 50 housed in the seedling tray storage cage 350 are taken out at the same time, the seedling tray 50 can be moved. The pair of left and right rail members 330L and 330R can be smoothly taken out without interfering with the corners 332c1 of the seedling tray stopper 332c.

Further, as shown in FIG. 7B, the front end portion 332b1 of the second rail portion 332b in 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. 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 a plurality of seedling trays 50 housed in the seedling tray storage cage 350 are taken out at the same time, the seedling tray 50 is 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, a rod-shaped member 333 having a circular cross section for rotatably supporting the pair of left and right rail members 330L and 330R is fixed to both ends of the front end and the rear end of the pair of left and right rail members 330L and 330R. Has been done. That is, a part of the surface on the long side of the rod-shaped member fixing plate 333a bent into a substantially L shape is welded and fixed to the back surfaces of both ends of the first rail portion 332a of the pair of left and right rail members 330L and 330R. The rod-shaped member 333 is welded and fixed to the end edge portion on the short side side of the rod-shaped member fixing plate 333a so as to project forward or backward, respectively, and the rod-shaped member 333 is a second rail portion. It is separated from 332b by a predetermined dimension.

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

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

Since the pair of left and right rail guide members 310L and 310R described above have symmetrical shapes, the left rail guide member 310L will be further described with reference to FIGS. 7A to 8A. Since the right rail guide member 310R has the same configuration as the left rail guide member 310L, the description thereof will be omitted.

That is, as shown in FIG. 8, the left rail guide member 310L is substantially from (1) a substantially rectangular rail guide base portion 311 and (2) one end portion 311a of both ends in the longitudinal direction of the rail guide base portion 311. The left rail guide member 310L, in which the first half portion protrudes and the substantially second half portion is bent at a right angle to the rail guide base portion 311 from the left end portion 311b of the rail guide base portion 311, is the second of the left rail member 330L. 2 The substantially rectangular rail guide fixing portion 312 for fixing to the rear end portion of the rail portion 332b and (3) the rail guide base portion 311 are bent upward at a right angle from the right end portion 311c of the rail guide base portion 311. The substantially rectangular rail guide 1st part 313 and (4) the rail guide 1st part 313 are bent at a right angle from the upper end 313c of the rail guide 1st part 313 toward the center position side of the machine. It is a plate-shaped member composed of a rectangular rail guide second part 314 and. Further, as shown in FIG. 8, one end of the rail guide first portion 313 in the longitudinal direction is designated as one end portion 313a, the other end portion 313b, and both ends of the rail guide second portion 314 in the longitudinal direction. When one end of the portion is 314a and the other end is 314b, the other end 311d of both ends of the rail guide base 311 in the longitudinal direction and the other end 313b of the rail guide first portion 313 are used. , 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 the plane. , The length from the other end 311d to the one end 311a of the rail guide base 311 is shorter than the length from the other end 314b to the one end 314a of the rail guide second 314, and the length from the other end 314b to the one end 314a of the rail guide first part 313 is shorter. The left rail guide member 310L is formed so as to be shorter than the length from the other end portion 313b to the one end portion 313a.

That is, the pair of left and right rail guide members 310L and 310R are used when the pair of left and right rail members 330L and 330R are in the second posture, in other words, when the pair of left and right rail guide members 310L and 310R are in the non-retracted posture. The bottoms 51b and the like at both left and right ends of the seedling tray 50, which have been transported to the vicinity of the end portion 212b of the transport support bar 212 of the transport path 201b on the downstream side, are side edge portions 314c along the longitudinal direction of the rail guide second portion 314. (See FIG. 5, side edge portion 314c shown by the alternate long and short dash line in FIG. 9 and the like).

Further, the pair of left and right rail guide members 310L and 310R have a pair of left and right rails when the bottoms 51b and the like at both left and right ends of the conveyed seedling tray 50 come into contact with the side edge portions 314c of the rail guide second portion 314. The guide members 310L and 310R are formed so as to start rotating counterclockwise (see arrow F in FIG. 9) when viewed from the rear with the rod-shaped member 333 as the axis of rotation, and to shift from the non-retracted posture to the retracted posture. Has been done.

Further, the pair of left and right rail members 330L and 330R are linked to the operation of the pair of left and right rail guide members 310L and 310R shifting from the non-retracted posture to the retracted posture, and the rod-shaped member 333 is used as the rotation axis until then. The rotation is started from the second posture (see the arrow F indicating counterclockwise in FIG. 9), and the long side ends 53a of the left and right ends of the seedling tray 50 are supported from below by the first rail portion 332a. At the same time, the second rail portion 332b is formed so as to switch to the first posture that can be supported from the side. After that, the bottoms 51b and the like on both the left and right sides of the seedling raising pot 51 that are continuously transported continue to come into contact with the pair of left and right rail guide members 310L, the rail guide second part 314 and the like of the 310R, so that the pair of left and right rail members 330L , 330R maintains the first posture. The maintenance of the first posture will be described later.

Further, the rotation stopper 332b2 (see FIGS. 7 (a), 7 (b), and 9) protrudes 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 in.

As a result, when the pair of left and right rail members 330L and 330R are switched from the second posture to the first posture, the rotation stopper 332b2 causes the inside of 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 portion of the rear support stay end edge portion 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 rotating excessively.

Furthermore, when the pair of left and right rail guide members 310L and 310R shift from the non-retracted posture to the retracted posture, the pair of left and right rail members 330L and 330R are switched from the second posture to the first posture as described above. , 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. (Refer to the arrow G indicating clockwise in FIG. 9), the rail guide first part 313 of the pair of left and right rail guide members 310L and 310R is abutted by the side surface of the seedling raising pot 51 of the seedling tray 50 to be conveyed, and , The rail guide second part 314 is brought into contact with the bottom portion 51b of the seedling raising pot 51 to be conveyed (see the rail guide second part 314 etc. shown by the solid line in FIG. 9), and a pair of left and right rail guides. Since the members 310L and 310R cannot rotate downward (see the 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 ends on 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 end portion 212b of the transport support bar 212 on the downstream transport path 201b. The bottoms 51b and the like at both left and right ends come into contact with the side edge portions 314c of the rail guide second portion 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 in the second posture. Can be switched to the first posture.

Further, as described above, in a 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, the left and right sides of the seedling tray 50 are both left and right. The long side end portions 53a of the seedling tray 50 are supported from below by a pair of left and right first rail portions 332a and also from both left and right side surfaces by a pair of left and right second rail portions 332b. Sliding forward on the first rail portion 332a of the above, the front end portion of the seedling tray 50 (see reference numeral 50F1 in FIG. 10) eventually advances to a position W away from the seedling tray stopper 332c by a predetermined distance W, and the rail guide first. The second part 314 advances to a position where the rear end portion of the seedling tray 50 (see reference numeral 50B1 in FIG. 10) does not come into contact with the bottom portion 51b of the seedling raising pot 51 at both left and right ends, but the seedling tray 50 passes through the position and further forward. Even after sliding to, the rail guide part 1 313 keeps the seedling tray 50 seedling raising pot until the front end of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) 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 part 1 313 etc. shown by the solid line in FIG. 9), and the pair of left and right rail members 330L and 330R rotate downward (arrows in FIG. 9). Since (see G) is blocked, the pair of left and right rail members 330L and 330R can maintain the first posture. In FIG. 10, the line indicated by the alternate long and short dash line with reference numeral 50B2 is when the front end portion of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) reaches the nearest position of 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 of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) reaches the nearest position of the seedling tray stopper 332c. Since the 330L and 330R maintain the first posture, they do not fall to the seedling tray storage cage 350 side, but the front end of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) is located at the nearest position of the seedling tray stopper 332c. When the number reaches, the rail guide first part 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). 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 weight of the pair of left and right rail members 330L and 330R act to rotate the rod-shaped member 333 as the center of rotation. , 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 to the seedling tray storage basket 350 side in that posture due to its own weight.

As a result, the empty seedling tray 50 that has been conveyed to the front ends of the pair of left and right rail members 330L and 330R starts to fall in that posture, that is, from the front end to the rear end almost at the same time, and the seedling trays start to fall. Arrange neatly in the vertical direction in the storage cage 350.

That is, with the above configuration, since the front end portion of the seedling tray 50 is less likely to hang down as compared with the conventional case, the seedling tray 50 already stored in the seedling tray storage cage 350 is less likely to be pushed forward. The fall of the seedling tray 50 can be suppressed.

Further, since the seedling tray 50 already stored in the seedling tray storage cage 350 is difficult to be pushed forward, the seedling tray 50 is stacked in a state of being displaced from each other after the seedling tray 50 is taken out from the seedling tray storage cage 350. There is no need to arrange the misalignment of the trays and rearrange them neatly.

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

As a result, it is possible to prevent the seedling tray 50 from shifting in the left-right direction and falling off from the rail members 330L and 330R while being conveyed on the pair of left and right rail members 330L and 330R. Since the front portion 301a is in a raised state, the seedling tray 50 can be smoothly taken out without interfering with the seedling tray holding rod 301 even when a plurality of seedling trays 50 housed in the seedling tray storage cage 350 are taken out at the same time. ..

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 ends of the pair of left and right rail members 330L and 330R, and they are integrally rotated. With a simple configuration that can be supported, the seedling tray 50 to be transported comes into contact with the pair of left and right rail guide members 310L and 310R, and the pair of left and right rail members 330L and 330R are reliably rotated to obtain the first posture. The second posture can be switched.

For example, as another configuration example for rotating the rail member, the central portion of the seedling tray in the left-right width direction is composed of a plurality of arm members connected to the link member by contacting the predetermined link member. It is conceivable that the link mechanism is complicatedly interlocked to rotate the rail member, but in such a configuration example, the number of parts is large and the structure is complicated, which causes an increase in cost.

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

The bottoms 51b on both ends of the seedling tray 50 of the present embodiment correspond to an example of predetermined parts on the left and right sides of the seedling tray of the present invention.

Next, the seedling tray storage basket 350 will be described 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 accommodation position is shown as a seedling tray 50A located at the accommodation position, and the outer shape thereof is shown by a chain double-dashed line. Further, when the worker pulls the seedling tray 50A located at the storage position forward (see the arrow H in FIG. 6), the posture of the seedling tray 50A located at the storage position is changed to a forward rising posture as compared with the posture of the seedling tray 50A located at the storage position. The outer shape of the seedling tray 50B located at the take-out position is shown by a chain double-dashed line.

The seedling tray storage basket 350
(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. The front ends of the two ends are 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 the rear ends of the two ends are the pair of left and right rails. A pair of left and right storage cage 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, and
(3) A front end support member 353 that supports the front end side of the falling seedling tray 50, and
(4) A seedling tray 50A located between the rear end support member 352 and the front end support member 353 and supported by the rear end support member 352 and the front end support member 353 and located at the accommodation position. When the worker pulls it forward, the posture of the seedling tray 50A located at the storage position (this is called the storage posture) is raised forward (this is called the collection posture) (at the take-out position of FIG. 6). The seedling tray 50B located) is provided with a front-raising support member 354 formed so as to be changeable.

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

Further, the rear end support member 352 is
(1) When viewed from the rear, the rear end first support is formed in a substantially U shape, and the upper ends of the U shape are welded and fixed to the lower surface side of the rear portion of the pair of left and right storage cage fixing bars 351L and 351R. Member 352A and
(2) In the bent portion of the rear end first support member 352A bent at substantially right angles to the lower 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. A pair of left and right second support bases 352L1 and 352R1 that are welded and fixed at intervals smaller than the left and right widths and extend rearward in parallel to each other by a predetermined size are bent upward at a substantially right angle from the rear ends. Further, it is composed of a pair of left and right rear end portion second support members 352L and 352R, in which a tip portion bent rearward at a substantially right angle is fixed to the lower portion of the transport path 201a on the upstream side.

As shown in FIG. 6, the lower ends of the pair of left and right rail member rear support stays 342L and 342R are welded and fixed to the pair of left and right rear end second support members 352L and 352R.

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

Further, the first support base portion 352A1 between the bent portions of the rear end portion first support member 352A bent at substantially right angles at the lower ends of the U-shape, and the pair of left and right rear end portion second support members 352L and 352R. Among them, a pair of left and right second support bases 352L1 and 352R1 extending rearward in parallel with each other from the first support base 352A1 support the rear end side of the seedling tray 50A located at the accommodation position from below. ..

Further, the front end support member 353 has a substantially U-shape when viewed from the rear, and the upper ends of both ends of the U-shape are welded and fixed to the lower surface side of the front portion of the pair of left and right storage cage fixing bars 351L and 351R. There is.

Further, the front end support base portion 353a between the bent portions of the front end support member 353 bent at substantially right angles at the lower ends of the U-shape supports the front end side of the seedling tray 50A located at the accommodation position from below. There is.

In the present embodiment, the seedling tray 50 that has fallen from the pair of left and right rail members 330L and 330R is supported by the front end support base portion 353a, the first support base portion 352A1, and the pair of left and right second support base portions 352L1 and 352R1. The posture (storage posture) of the seedling tray 50 located at the storage position is substantially parallel to the posture of the seedling tray 50 being conveyed forward on the pair of left and right rail members 330L and 330R in a side view. There is a relationship.

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

As a result, the worker pulls the seedling tray 50A located at the accommodation position forward (see the arrow H in FIG. 6), so that the seedling tray 50A becomes the front end support base portion 353a and the front rising first support base portion 354A. Since the support status changes so that it is supported by the front-raising second support base 354B, the posture of the seedling tray 50A located at the accommodation position can be changed to the front-raising posture and moved to the take-out position. You can. In this way, since the front end of the seedling tray 50B located at the extraction position can be moved upward, the passenger rice transplanter 1 is in the field of planting work (at this time, the position of the planting device 200 is lowered). Even so, it becomes easy to collectively take out the seedling trays 50 in which a plurality of sheets are stacked 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 cut out so that the height of rise from the surface of the first rail portion 332a is low. (See FIG. 7B), even when the seedling trays 50 in which a plurality of sheets are stacked are collectively taken out from the seedling tray storage cage 350, the seedling trays 50 are on the front side of the second rail portion 332b of the pair of left and right rail members 330L and 330R. Can be taken out smoothly without interfering with.

Further, since the corner portion 332c1 of the stopper 332c for the seedling tray is notched diagonally (see FIG. 7C), even when a plurality of stacked seedling trays 50 are collectively taken out from the seedling tray storage cage 350, the seedling trays 50 may be taken out together. The seedling tray 50 can be smoothly taken out without interfering with the corner portion 332c1 of the seedling tray stopper 332c in the pair of left and right rail members 330L and 330R.

Further, since the front portion 301a of the seedling tray holding rod 301 is in a raised state (see FIG. 6), even when the seedling trays 50 in which a plurality of sheets are stacked are collectively taken out from the seedling tray storage cage 350, the seedling tray 50 is still used as a seedling. It can be taken out smoothly without interfering with the tray holding rod 301.

Further, the innermost side of the pair of left and right rail member front support stays 341L and 341R, that is, the front side support stay end edge portion 341b (see FIG. 9) on the side where the seedling tray 50 exists, is a seedling tray with a plurality of stacked seedling trays 50. Even when the seedling tray 50 is collectively taken out from the storage cage 350, the seedling tray 50 is formed so as not to interfere with the front end support stay end edge portion 341b, so that the seedling tray 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 according to the present embodiment corresponds to an example of the guide portion of the present invention, and the seedling tray storage cage 350 according to the present embodiment. Is an example of the seedling tray accommodating portion of the present invention. Further, the pair of left and right rail members 330L and 330R of the present embodiment correspond to an example of the rail members of the present invention. Further, the first support base portion 352A1 and the pair of left and right second support base portions 352L1 and 352R1 of the present embodiment correspond to an example of the first support portion of the present invention, and the front end support base portion 353a of the present embodiment is the present invention. This is an example of the second support part of. Further, the configuration including the front-raising first support base portion 354A and the front-raising second support base portion 354B of the present embodiment corresponds to an example of the third support portion of the present invention.

Next, the first configuration example to the fourth configuration example regarding 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 pair of left and right first hopper lids 400L and the right first hopper lid 400R in a direction orthogonal to the traveling direction of the passenger rice transplanter 1. This is an example (see FIGS. 12 (a) and 12 (b)).

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

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

In the passenger rice transplanter 1 of the type in which pot seedlings are taken out from the seedling tray 50 and planted in the field, the upper surface of the hopper lid is used when the worker collects the empty seedling tray 50 housed in the seedling tray storage basket 350. As a result, the seedling tray 50 is often arranged, and the upper surface of the hopper lid is more likely to be scratched than other types of passenger 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 rib 401, the contact with the upper surface of the hopper lid can be reduced and the appearance performance (appearance) can be maintained. You can.

Further, by providing the first rib 401, even when the seedling tray 50 is arranged using the upper surface of the hopper lid, the deflection of the hopper lid can be reduced, and the operator can collect the empty seedling tray 50. Workability can be improved.

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

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

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

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

As a result, in the pair of left and right second hopper lids 410L and 410R of the second configuration example described above, by providing the second rib 411, the contact with the upper surface of the hopper lid is reduced as in the case of the first configuration example. , Appearance performance (appearance) can be maintained.

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

Further, by providing the second rib 411, when the seedling tray 50 is arranged using the upper surface of the hopper lid, the empty seedling tray 50 can be easily fixed and the empty seedling tray 50 can be easily stacked. Therefore, the collection work can be facilitated.

Next, in the third configuration example, the size of the seedling raising pot 51 of the empty seedling tray 50 protruding from the upper surfaces of the pair of left and right third hopper lids 420L and the right third hopper lid 420R to a predetermined height is accommodated. This is an example in which the first enclosure member 421, which is a substantially rectangular frame in a plan view, is provided (see FIGS. 13 (a) to 13 (d)). The tip of the portion of the first enclosure member 421 protruding to a predetermined height is the long side end 53a along the left and right long sides 53L and 53R of the empty seedling tray 50 (FIGS. 4A and 4). b) It is a configuration that supports the outer peripheral portion such as).

Further, in the third configuration example, the first enclosure member 421 is arranged close to the outside of the machine body on the upper surfaces of the pair of left and right third hopper lids 420L and the right third hopper lid 420R (FIG. 13 (FIG. 13). a), see FIG. 13 (c)).

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

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

As a result, by providing the first enclosure member 421, when the seedling tray 50 is arranged using the upper surface of the hopper lid, the empty seedling tray 50 can be easily fixed, and the empty seedling tray 50 can be stacked. Since it becomes easy, the collection work can be facilitated.

Further, also in this configuration, since the tip portion of the portion of the first enclosure member 421 protruding to a predetermined height supports the seedling tray 50, the upper surface of the hopper lid is less likely to be scratched.

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

Next, in the fourth configuration example, similarly to the third configuration example described above, an empty seedling protruding from the upper surface of each of the pair of left and right left fourth hopper lids 430L and 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, is provided so as to accommodate the seedling raising pot 51 of the tray 50. The tip of the portion of the second enclosure member 431 protruding to a predetermined height is the long side end 53a along the left and right long sides 53L and 53R of the empty seedling tray 50 (FIGS. 4A and 4). b) It is a configuration that supports the outer peripheral portion such as).

However, in the fourth configuration example, unlike the third configuration example described above, the second enclosure member 431 is moved toward the inside of the machine body on the upper surfaces of the pair of left and right fourth hopper lids 430L and the right fourth hopper lid 430R. (See FIGS. 13 (a) and 13 (c)).

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

Further, also in this configuration, since the tip portion of the portion of the second enclosure member 431 protruding to a predetermined height supports the seedling tray 50, the upper surface of the hopper lid is less likely to be scratched.

Further, the second enclosure member 431 is arranged close to the inside of the machine body on the upper surfaces of the pair of left and right fourth hopper lids 430L and the right fourth hopper lid 430R, so that the seedling tray storage basket 350 can be provided. Since the access is almost uniform, the work of the operator can be facilitated.

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

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

FIG. 14 is a schematic partial enlarged side view of the lower part of the planting device 200 and its periphery for explaining the mounting configuration of the rotor stay 110 holding the frame of the leveling rotor 100.

In the passenger 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 portion frame 240 connecting the planting device 200.

As a result, the weight was increased because the rotor shaft was damaged due to insufficient rigidity and the rigidity was not secured because the support was built on the frame that overhanged to the left and right from the planted part suspension base and the rotor was suspended. Compared to the above, it has a simple structure, and both weight reduction and rigidity improvement can be achieved.

Next, in the passenger rice transplanter 1, the mounting configuration of the motor stay 510 for mounting the motor 500 for raising and lowering the ground leveling rotor 100 will be described with reference to FIG.

FIG. 15 is a schematic partial enlarged side view of the lower part of the planting device 200 and its periphery for explaining the mounting configuration of the motor stay 510 for mounting the motor 500 for raising and lowering the ground leveling rotor 100.

In the passenger rice transplanter 1 of the present embodiment, as shown in FIG. 15, the motor stay 510 has a configuration of being attached to the front side of the planting portion frame 240, similarly to the rotor stay 110 described above.

As a result, the installation of the components of the leveling rotor is concentrated on the planting part frame 240, as compared with the conventional configuration, which has been a factor of increasing the number of parts and weight because the leveling rotor is manually raised and lowered. As a result, it is possible to significantly reduce the weight, reduce the number of parts, and increase the strength at the same time.

Next, in the passenger rice transplanter 1, when the ground leveling rotor 100 is raised and lowered by the motor 500, the connection configuration of the raising and lowering gear 520 and the raising and lowering arm 530 is shown in FIGS. 16A and 16A.
This will be described with reference to (b).

FIG. 16 (a) 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. 16 (b) shows the articulated arm 540 and the center rotor 120. It is a partially enlarged schematic side view of the ground leveling rotor 100 for explaining the pulling spring 550 provided between.

In the passenger rice transplanter 1 of the present embodiment, as shown in FIGS. 16A and 16B, the leveling rotor 100 is raised and lowered by the motor 500 between the raising and lowering gear 520 and the raising and lowering arm 530. An articulated arm 540 was provided in the.

Further, the articulated arm 540 is rotatably connected to the upper end portion of the elevating arm 530 by the first connecting shaft 541. Further, an arc-shaped elongated hole 542 is formed on the rear end side of the articulated arm 540 (FIGS. 16 (a) and 16 (b)).

Further, the elevating gear 520 has a substantially fan shape, and a portion corresponding to the core 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, on the side surface of the elevating gear 520, a slide pin 521 is erected at a position where it is loosely connected to the arcuate elongated hole 542 formed in the articulated arm 540 (FIGS. 16A and 16A). (B)).

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

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

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

As a result, the center rotor 120 can be pulled in a direction closer to the vertical direction by hooking the pulling spring 550 on the articulated arm 540, as compared with the conventional configuration in which the pulling spring of the center rotor is hooked on the lifting arm. You can. Further, since the ground leveling rotor 100 is hooked on the arm that raises and lowers the ground leveling rotor 100, the hook position of the pulling spring 550 fluctuates in proportion to the raising and lowering of the ground leveling rotor 100, so that the pulling angle and the displacement width of the load become smaller.

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

FIG. 17 (a) is a schematic partially enlarged side view of the configuration of the feed claw 211 and its peripheral members as viewed from the left side, and FIG. 17 (b) shows the feed claw 211 and its peripheral members shown in FIG. 17 (a). It is a schematic partial enlarged rear view which looked at the structure of.

In the passenger rice transplanter 1 of the present embodiment, as shown in FIGS. 17A and 17B, one end 610a of the rotary spring 610 mounted around the rotary shaft 600 of the feed claw 211 is provided. 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 of the spring hook portion 211a hits the protrusion 621 provided on the upper end of the arm plate 620. It is configured in a protruding shape so that it can be touched.

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

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

As a result, for example, when the rotary spring 610 provided for pressing the feed claw 211 is damaged, the pressing pressure on the spring hook portion 211a disappears, and the feed claw 211 loses the pressing force, as shown in FIG. 17A. It rotates in the direction of arrow J with the rotation shaft 600 as the center of rotation, but stops rotating at a position where the tip of the spring hook portion 211a abuts on the protrusion 621 of the arm plate 620 (FIG. 17 (a). ), Refer to the feed claw 211 indicated by the alternate long and short dash line.

That is, even if the rotary spring 610 is damaged, the tip of the spring hook portion 211a abuts on the protrusion 621 of the arm plate 620 to regulate the rotation range of the feed claw 211, so that the feed claw 211 rotates greatly. It is possible to prevent it from moving and interfering with other members, leading to secondary damage.

In the above embodiment, the case where the pair of left and right rail guide members 310L and 310R are fixed straight along the longitudinal direction of the pair of left and right rail members 330L and 330R has been described (FIG. 7B). (See), but not limited to this, for example, as shown in FIG. 11, the pair of left and right rail guide members 310L and 310R are fixed by being tilted by a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members 330L and 330R. The seedling tray 50 may be fixed so as to approach the transport path side. 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 two-point chain line in FIG. 9), the rail guide second part 314 is oriented in the longitudinal direction. Since the rear end side of the side edge portion 314c along the line is located further inside the transport path of the seedling tray 50, even if the shape of the seedling tray 50 varies due to deformation of the seedling tray 50 or the like, a pair of left and right sides is used. The rail guide members 310L and 310R of the above make it easier to catch the bottom 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). 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 tilting the pair of left and right rail members 330L and 330R by a predetermined angle θ with respect to the longitudinal direction. It is a schematic plan view which shows the state which the rail member 330L takes a 2nd posture.

Further, in the above embodiment, as the seedling tray storage cage 350, the empty seedling tray 50 that falls after being transported to the front end while sliding on the pair of left and right rail members 330L and 330R is slid and moved. A configuration that has a part that receives the seedling tray 50 while maintaining the inside posture, and has a part that can be changed to a forward rising posture by the operator pulling the seedling tray 50 stacked in that part forward. However, the present invention is not limited to this. For example, as a seedling tray storage cage 350, an empty seedling tray 50 that falls after being transported to the front end while sliding on a pair of left and right rail members 330L and 330R. It may be configured to have a portion for receiving the posture so as to form a forward rising posture as compared with the posture during the slide movement of. Even in the case of this configuration, similarly to the above, even if the passenger rice transplanter 1 is in the field of planting work (at this time, the position of the planting device 200 is lowered), a plurality of seedling trays 50 are stacked. Can be easily taken out from the seedling tray storage basket 350.

Further, in the above 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 transported to the downstream side of the transport path and rotate, so that the left and right rail guide members 310L and 310R rotate from the non-retracted posture. The configuration in which the pair of left and right rail members 330L and 330R shift from the second posture to the first posture in conjunction with the shift to the retracted posture has been described, but the present invention is not limited to this, and for example, the pair of left and right rail members 330L and 330R may be used. If the configuration is such that the second posture can be changed to the first posture, instead of the pair of left and right rail guide members 310L and 310R, another pair of left and right rail guide members are used at the front ends on both the left and right sides of the seedling tray 50. (Refer to reference numeral 53a in FIGS. 4 (a) and 4 (b)), the posture may be changed from the non-retracted posture to the retracted posture by being brought into contact with each other and rotating. Further, in the case of this configuration, while the long side 53L on both the left and right sides of the seedling tray 50 and the long side end 53a along the 53R are in contact with the other rail guide member, the pair of left and right rail members 330L, The 330R can maintain the first posture. In the case of this configuration, the long side end portions 53a on the left and right sides of the seedling tray 50 correspond to an example of predetermined parts on the left and right sides of the seedling tray of the present invention.

Further, in the above embodiment, the pair of left and right rail members 330L and 330R are 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 weights 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 pair of left and right rail members 330L and 330R and the pair of left and right rail member rear support stays 342L and 342R are provided via torque springs (not shown). It may be rotatably connected. Specifically, the rear end of the rod-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 at the start of winding and the rear end portion at the end of winding. The front end of the torque spring is fixed to the rear end of the first rail portion 332a, and the rear end of the torque spring is fixed to a pair of left and right rail member rear support stays 342L, 342R (. By providing the torque springs as described above, when the pair of left and right rail guide members 310L and 310R are in the non-retracted posture, they are transported to the vicinity of the terminal portion 212b of the transport support bar 212 on the downstream transport path 201b. The bottoms 51b and the like at both left and right ends of the seedling tray 50 come into contact with the side edge portions 314c along the longitudinal direction of the rail guide second portion 314 (see FIGS. 5 and 9), whereby the pair of left and right rail members 330L, When the 330R is shifted from the second posture 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 is a pair of left and right rails. This is a configuration that occurs for the members 330L and 330R.

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

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

The work vehicle according to the present invention is useful as a work vehicle capable of arranging and stacking seedling trays more neatly than in the past.

1 Passenger rice transplanter 2 Traveling vehicle body 10 Driver's seat 50 Seedling tray 51 Seedling pot 51b Bottom 200 Planting device 210 Seedling tray transport device 220 Seedling planting part 300 Recovery device 301 Seedling tray holding part 301a Front part 332b1 Front end 310L Left rail guide Member 310R Right rail guide member 330L Left rail member 330R Right rail member 350 Seedling tray storage basket

Claims (4)

Running body (2) and
A work vehicle provided with a planting device (200) connected to the rear portion of the traveling vehicle body (2) and taking out the pot seedlings from a seedling tray (50) on which pot seedlings are arranged and planting them in a field.
The planting device (200)
A seedling tray transporting device (210) that transports the supplied seedling tray (50) from the upstream side to the downstream side of the transport path, and
A seedling planting portion (220) provided in the middle of the transport path, and the pot seedlings are taken out from the seedling tray (50) to be transported and planted in the field.
The seedling planting portion (220) has a collection device (300) for collecting the seedling tray (50) from which the pot seedlings are taken out and sent out from the terminal portion of the transport path.
The recovery device (300)
Guides (310L, 310R, 330L, 330R) that guide the seedling tray that has come to the terminal portion of the transport path forward from the terminal portion and drop the guided seedling tray.
A seedling tray accommodating portion (350) for receiving and accommodating the seedling tray (50) falling downward from the guide portion (310L, 310R, 330L, 330R).
The seedling tray (50) has a seedling tray holding portion (301) for preventing the seedling tray (50) from slipping off from the guide portion (310L, 310R, 330L, 330R) in the left-right direction, and accommodates the seedling tray. The bottom of the seedling tray (350) has a portion where the front end portion of the seedling tray (50) can be changed to a posture that is raised forward from the rear end portion, and the front end portion of the seedling tray (50) is rearward. The seedling tray holding portion (301) is formed with a front portion (301a) in which the seedling tray (50) does not interfere with the seedling tray holding portion (301) when the posture is changed so as to rise forward from the end portion. A work vehicle characterized by. The seedling tray (50) does not interfere with the guide portions (310L, 310R, 330L, 330R) when the front end portion of the seedling tray (50) is changed to a posture that is raised forward from the rear end portion. The work vehicle according to claim 1, wherein the front end portion (332b1) cut out in the guide portion (310L, 310R, 330L, 330R) is formed. The front portion (301a) is viewed from the side of the machine body and is in a forward-raising posture. The seedling tray (50) is formed by arranging a large number of seedling raising pots (51) in the vertical and horizontal directions, and is formed by the seedling raising pod (51). When the periphery of the bottom portion (51b) and the guide portion (310L, 310R, 330L, 330R) come into contact with each other, the posture is switched to support the seedling tray (50), and the periphery of the bottom portion (51b) of the seedling raising pod (51). The work vehicle according to claim 1 or 2, wherein when the guide portions (310L, 310R, 330L, 330R) do not come into contact with each other, the seedling tray (50) is switched to a posture that does not support the seedling tray (50). The work vehicle according to claim 3, wherein the periphery of the bottom portion (51b) of the seedling raising pod (51) is the growing pod (51) arranged on both left and right sides of the seedling tray (50). ..

Images