JP2019050791A - Work vehicle - Google Patents

Abstract

To provide a work vehicle capable of aligning seedling trays neatly.SOLUTION: There is provided a sulky rice transplanter 1 comprising a travel vehicle body 2 and a planting device 200 for taking pot seedlings from seedling trays 50 and planting the pot seedlings on a farm field. The planting device 200 comprises: a seedling tray transport device 210; a seedling planting part 220; and a collection device 300 for collecting the seedling trays fed from a terminal part of a transport path. The collection device comprises: a left and right pair of rail members 330L, 330R for guiding the seedling tray which reached the terminal part of the transport path, from the terminal part to a front side while maintaining a prescribed posture of the seedling tray, falling the guided seedling tray from the prescribed posture, and to whose rear end, a rail guide member is attached; and a seedling tray storage part 350 for receiving and storing the fallen seedling tray. A bottom part of the seedling tray storage part has a portion which can be changed to a front raising posture when an operator pulls the seedling tray which is fallen from the left and right pair of rail members 330L, 330R and received to a front side.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a work vehicle that performs work on a farm field.

  As a seedling transplanter as an example of a conventional work vehicle, a seedling tray made of resin in which a large number of grown 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 A configuration connected to the rear portion of the vehicle body is known (for example, see Patent Document 1).

  Further, in the conventional seedling transplanting machine, the seedling tray that has been emptied after all the pot seedlings have been taken out from the seedling tray is pushed forward from the rear end of the tray conveyance path and is provided on the lower front side. It is the structure accommodated in the storage case formed with the rod-shaped member.

JP, 2006-101129, A

  However, according to the above-described conventional configuration, when the seedling tray that has been emptied is pushed forward from the rear end of the tray conveyance path, rail members that support the left and right ends of the seedling tray are not provided. The front end of the container droops greatly due to its own weight, hits the bottom of the seedling 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 displaced from each other and clean There was a problem that they could not be stacked and stacked.

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

In order to solve the above-mentioned problem, the present invention described in claim 1
Traveling vehicle body (2),
A working vehicle including a planting device (200) connected to a rear portion of the traveling vehicle body (2) and taking out the pot seedling from a seedling tray (50) in which the pot seedling is arranged and planting the seedling on a farm field,
The planting device (200)
A seedling tray transport device (210) for transporting the supplied seedling tray (50) from the upstream side to the downstream side of the transport path;
A seedling planting section (220) that is provided in the middle of the transport path and takes out the pot seedling from the transported seedling tray (50) to be planted in the field;
The pot seedling is taken out at the seedling planting part (220), and has a recovery device (300) for recovering the seedling tray (50) sent out from the end part of the transport path,
The recovery device (300)
A guide unit (310L) that guides the seedling tray that has arrived at the terminal end of the conveyance path while maintaining a predetermined posture forward from the terminal portion, and drops the guided seedling tray from the predetermined posture. 310R, 330L, 330R),
A seedling tray accommodating part (350) for receiving and accommodating the seedling tray falling from the guide part (310L, 310R, 330L, 330R),
The bottom part of the seedling tray housing part receives the falling seedling tray so that the front end part of the seedling tray is in a front rising position from the rear end part compared to the predetermined attitude. The seedling tray that has been received or received by falling is provided with a part that can be changed to a posture in which the front end portion of the seedling tray rises forward from the rear end portion as compared with the predetermined posture. This is a work vehicle characterized by that.

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

Further, the present invention described in claim 3
The guide portions (310L, 310R, 330L, 330R) are rail members (330L, 330R) that can support the left and right end portions of the seedling tray from the side surface and the lower surface side and can be guided forward, and the rail members. Rail guide members (310L, 310R) coupled to (330L, 330R) and capable of rotating the rail members,
The rail members (330L, 330R) can take a first posture that can support the seedling tray and a second posture that cannot support the seedling tray,
The rail guide members (310L, 310R) take a retreating posture to retreat from the movement path of the predetermined part on both the left and right sides while the predetermined part on the left and right sides of the seedling tray are in contact with each other. While the predetermined parts on the left and right sides are not in contact with each other, it takes a non-retreating posture,
While the rail guide members (310L, 310R) are in the retracted position, the rail members (330L, 330R) continue to take the first position, and the rail guide members (310L, 310R) are in the non-retracted position. The work vehicle according to claim 1, wherein the rail member (330L, 330R) takes the second posture when taken.

Further, the present invention according to claim 4 provides
The bottom portion of the seedling tray accommodating portion has the changeable portion,
The bottom portion of the seedling tray accommodating portion is
A first support portion (352A1, 352L1, 352R1) for supporting the rear end side of the seedling tray from below;
A second support part (353a) located on the front side of the first support part and supporting the seedling tray from below;
It is located between the first support part and the second support part, and can be changed to the front-up position compared to the attitude of the seedling tray supported by the first support part and the second support part. The work vehicle according to any one of claims 1 to 3, further comprising a third support portion (354A, 354B) formed.

Further, the present invention according to claim 5 provides:
The work vehicle according to claim 4, wherein a 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. .

Further, the present invention according to claim 6 provides
A fertilizer application device for applying fertilizer stored in the hopper (40) to the field;
Protruding members (401, 411, 421, 431) are provided at positions where the seedling tray can be supported among the upper surfaces of the lid portions (400L, 400R, 410L, 410R, 420L, 420R, 430L, 430R) of the hopper. The work vehicle according to claim 1, wherein the work vehicle is a work vehicle.

  According to the first aspect of the present invention, it is possible to stack the seedling trays in the seedling tray accommodating portion more neatly than in the prior art.

  Moreover, since it becomes easy to take out the seedling trays stacked in the seedling tray accommodating portion, workability is improved.

  Moreover, according to this invention of Claim 2, in addition to the effect of this invention of Claim 1, when taking out the seedling tray piled up by the seedling tray accommodating part in the front rising attitude | position, with a rail member Interference is reduced, and it becomes easier to take out more reliably, so workability is improved.

  Moreover, according to this invention of Claim 3, in addition to the effect of this invention of Claim 1, the attitude | position of a rail member can be changed with a simple structure.

  Moreover, according to this invention of Claim 4, in addition to the effect of this invention in any one of Claims 1 thru | or 3, the seedling tray which falls is a 1st support part and a 2nd support part. The seedling trays that are supported and stably stacked can be changed to a forwardly raised posture by the third support portion, so that they can be easily taken out and workability is improved.

  Moreover, according to this invention of Claim 5, in addition to the effect of this invention of Claim 4, the seedling tray which falls is stacked more stably.

  Further, according to the present invention of claim 6, in addition to the effect of the present invention of any one of claims 1 to 5, even when the seedling tray is placed on the upper surface of the lid portion of the hopper, Since the convex member supports the seedling tray, the upper surface of the lid is hardly damaged.

Side view of riding rice transplanter in one embodiment of the present invention Plan view of the 8-row riding rice transplanter shown in FIG. The enlarged side view of the rear part of the riding rice transplanter of this Embodiment shown in FIG. (A): Bottom view of a part of the seedling tray in the riding rice transplanter of the present embodiment, (b): Side view of a part of the seedling tray viewed from the short side The schematic side view which shows the state of the seedling tray currently conveyed along the conveyance path curved in the substantially U shape by the side view in the riding rice transplanter of this Embodiment The perspective view which looked at the recovery device in the riding rice transplanter of this embodiment from the left rear side (A): 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 capable of supporting the seedling tray (in this specification, this posture is referred to as a first posture); b): 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 in which the seedling tray cannot be supported (this posture is referred to as a second posture in the present specification); c): CC sectional view taken on line CC in FIG. 7B, (d): DD sectional view taken on line DD in FIG. 7B. , (E): EE line cross-sectional view taken along line EE shown in FIG. The perspective view at the time of seeing a left rail guide member from the left back among a pair of right and left rail guide members arrange | positioned at the riding rice transplanter of this Embodiment Schematic partial enlarged rear view of the left rail member rear support stay arranged on the left side of the recovery device in the riding rice transplanter of the present embodiment as viewed from the rear. Schematic plan view showing a state in which a pair of left and right rail members in the recovery device for a riding rice transplanter of the present embodiment takes a first posture. Partial 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 is fixed at 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 a first configuration example of the upper surface of the hopper lid of the fertilizer application apparatus, (b): The left first hopper lid shown in FIG. 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, (d): left-hand side 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 apparatus, (b): The left third hopper lid shown in FIG. Schematic side view, (c): Schematic plan view of right third hopper lid for explaining a third configuration example, (d): Schematic side view of right third hopper lid shown in FIG. 13 (c) Schematic partially enlarged side view of the lower part of the planting device and its surroundings for explaining the mounting structure of the rotor stay that holds the frame of the leveling rotor in the riding rice transplanter of the present embodiment Schematic partially enlarged side view of the lower part of the planting device and its surroundings for explaining the mounting structure of the motor stay for mounting the motor for raising and lowering the leveling rotor in the riding rice transplanter of the present embodiment (A): A partially enlarged schematic side view of a leveling rotor for explaining a connection configuration of a lifting gear and a lifting arm in the riding rice transplanter of the present embodiment, (b): between an articulated arm and a center rotor Partially enlarged schematic side view of a leveling rotor for explaining a provided lifting spring (A): Schematic partial enlarged side view of the configuration of the feed claw and its peripheral members from the left side in the riding rice transplanter of this embodiment, (b): the feed claw and its peripheral members shown in FIG. 17 (a) Approximate partial enlarged rear view of the configuration of the system viewed from the back

  Hereinafter, an eight-row riding rice transplanter 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 the riding rice transplanter according to the present embodiment.

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

  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 according to the present embodiment, a planting device 200 is mounted on the rear side of the traveling vehicle body 2 via a lifting link device 30 so as to be movable up and down, and fertilizer is applied on the rear upper 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 work vehicle in which a traveling vehicle body 2 includes a pair of left and right front wheels 3 and a pair of left and right rear wheels 4.

  The engine 5 is mounted on the main frame 6, and the rotational power of the engine 5 is a sub-transmission mechanism (not shown) in the transmission case 7 via an HST (hydrostatic stepless transmission) or the like. Transmitted to etc. The rotational power shifted in the transmission case 7 is configured to be output separately from the traveling power used for the traveling system and the like and the 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 portion 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 wheel 3 is provided in front of the cockpit 10, and the front side thereof is covered with a front cover 12. Further, 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 replenishment work such as a seedling tray and fertilizer can be easily performed.

  Further, on both the left and right sides of the steering handle 11 and the front cover 12, a replenishment seedling mounting frame 15 on which a large number of seedling trays 50 are loaded is disposed. A structure in which the seedling tray 50 that has been prepared can be sequentially replenished while being taken out by an operator during the planting operation, to the start end portion (upstream side) of the conveyance path 201 of the planting device 200 connected to the rear portion. It is.

  In addition, the conveyance path 201 is a structure which conveys one seedling tray 50 per two planting strips sequentially, supplies a pot seedling for every seedling planting part 220 mentioned later, and plants two rows. Therefore, in the riding rice transplanter 1 for eight-row planting, four conveyance paths 201 and seedling planting portions 220 are provided in the left-right width direction in plan view in order to realize multi-row planting (FIG. 2). reference).

  That is, the planting device 200 described above includes (1) a seedling tray transport device 210 that transports the seedling tray 50 that is sequentially supplied from the upstream side to the downstream side of the transport path 201, and (2) the transport path 201. A seedling planting unit 220 for taking out the pot seedling from the seedling tray 50 which is provided and transported and planting it in the field, and (3) the pot seedling is taken out by the seedling planting unit 220 and sent out from the terminal end of the transport path. A recovery device 300 for sequentially recovering the empty seedling tray 50 is provided for every two planting strips.

  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, the seedling tray 50 has a flexible surface made of synthetic resin formed by arranging a large number of seedling pots 51 in the vertical and horizontal directions, as shown in FIGS. 4 (a) and 4 (b). It is a rectangular plate-like member in view, and can be curved in a substantially U shape in side view on the conveyance path (see FIG. 5). FIG. 5 is a schematic side view showing a state of the seedling tray 50 being conveyed along the conveyance path 201 curved in a substantially U shape in a side view.

  The seedling pot 51 has a circular opening 51a on the back side in the drawing of FIG. 4 (a) and has a bottom portion 51b protruding on the near side in the drawing of FIG. 4 (a). It is a pot-shaped member which has a space part for it (refer FIG.4 (b)). In the bottom 51b, an extrusion pin (not shown) provided in the seedling planting portion 220 for pushing out the pot seedling in the seedling pot 51 can be inserted from the bottom 51b side toward the opening 51a side. A slit hole 51b1 having a predetermined shape is formed.

  The seedling tray 50 in a state where the pot seedling is grown in the seedling pot 51 is supplied to the conveyance path 201 of the planting apparatus 200, so that the planting operation is performed.

  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 short direction. A substantially square-shaped feed hole 52 is formed at a constant interval along the left and right long sides 53L and 53R.

  The feeding claw 211 (see FIG. 5) of the seedling tray conveying device 210 described above engages with the feeding hole 52 and moves up and down at a predetermined timing (see arrow B in FIG. 5), thereby conveying the seedling tray 50. Is intermittently performed for each row of the seedling pots 51.

  In addition, the seedling planting unit 220 described above, with respect to each seedling pot 51 in the horizontal row of the seedling tray 50, an extrusion pin (not shown) for simultaneously inserting from each bottom 51b side and taking out the pot seedling, Among the seedlings for one horizontal row pushed out by the push pin, there is a seedling feeding belt (not shown) that conveys the right half pot seedling to the right and the left half pot seedling to the left. In addition, the planting claws 221 that are rotatably disposed below the left and right sides of the seedling feeding belt are rotated so that the pot seedlings conveyed to the left and right sides by the seedling feeding belt are sequentially planted in the field. is there.

  Moreover, the float 230 is provided under each seedling planting part 220 (refer FIG. 2). These floats 230 slide while leveling the muddy surface, and seedlings are planted by the planting claws 221 on the leveling trace.

  Moreover, the collection device 300 described above is disposed below the upstream side conveyance path 201a of the seedling tray conveyance apparatus 210 (see FIGS. 1 and 3), and is sent out from the end portion of the downstream side conveyance path 210b. The structure is such that the empty seedling tray 50 is sequentially collected (see FIG. 5). The collection device 300 will be further described later.

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

  That is, as shown in FIG. 5, the downstream side conveyance path 201b supports the seedling tray 50 that is conveyed by contacting the surface of the seedling tray 50 with the surface on the opening 51a side. The conveyance support bars 212 arranged at three locations 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 widths of the surface on the bottom 51b side of the seedling tray 50 (FIG. 4 ( a) and a conveyance guide bar 213 arranged to be insertable in FIG. 4B).

  The conveyance support bar 212 and the conveyance guide bar 213 are arranged in a state of maintaining 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. The front side is curved obliquely upward. Further, the end portion 212b of the transport support bar 212 is fixed to a predetermined stay (not shown) whose one end is fixed to the lower portion of the upstream transport path 201a, and the end portion 213b of the transport guide bar 213 is It is fixed to a transport guide bar support stay 214 (see FIG. 5) whose one end 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. The seedling tray 50 of the present embodiment is an example of the seedling tray of the present invention. Moreover, the planting apparatus 200 of this Embodiment corresponds to an example of the planting apparatus of this invention, and the seedling tray conveyance apparatus 210 of this Embodiment corresponds to an example of the seedling tray conveyance apparatus of this invention. Moreover, the seedling planting part 220 of this Embodiment corresponds to an example of the seedling planting part of this invention, and the collection | recovery apparatus 300 of this Embodiment corresponds to an example of the collection | recovery apparatus of this invention.

  Next, the configuration and operation of the collection apparatus 300 disposed on the rear end side of the downstream side conveyance 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 rear left side.

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

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

  Moreover, FIG.7 (c) is CC line sectional view taken on the line CC in FIG.7 (b), FIG.7 (d) is D- shown in FIG.7 (b). FIG. 7E is a cross-sectional view taken along the line D-D in the line D, and FIG. 7E is a cross-sectional view taken along the line E-E in the line E-E shown in FIG. In FIGS. 7A to 7E, the pair of left and right rail guide members 310L and 310R are indicated by two-dot chain lines.

  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 when viewed from the left rear side.

  FIG. 9 is a schematic partially enlarged rear view of the left rail member rear support stay 342L disposed on the left side of the recovery device 300 as viewed from the rear. 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 a solid line), and the left rail member 330L is in the second posture and the left rail guide member 310L. Represents a state (indicated by a two-dot chain line) in a non-retreating posture.

  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 is in the first posture.

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

  Further, in the present specification, the pair of left and right rail guide members 310L and 310R are in the retracted position means that the pair of left and right rail guide members 310L and 310R are at the left and right ends of the seedling tray 50 and in the vicinity thereof. It means that it is in a posture that does not exist in the movement path such as the bottom 51b, and that the pair of left and right rail guide members 310L and 310R are in the non-retracting posture means that the pair of left and right rail guide members This means that 310L and 310R are in a posture that exists 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 FIG. 5 and FIG.
(1) A large number of conical protrusions 321 that engage with the opening 51a of the seedling tray 50 fed from the end portion 212b of the transport support bar 212 of the downstream transport path 201b are arranged on the surface of the cylindrical roller member. The empty seedling tray 50 is transported to the collection device 300 side by being driven to rotate intermittently in synchronization with the vertical movement timing of the feed claw 211, and is arranged rotatably on the rear end side of the collection device 300. Transported rollers 320,
(2) Supporting the long side end portions 53a along the long sides 53L and 53R on the left and right sides of the seedling tray 50 fed from the conveying roller 320 and guiding them forward (corresponding to the first posture) A pair of left and right rail members 330L configured to be able to drop the seedling tray 50 at a predetermined timing (corresponding to the second posture) and having a long plate shape with a substantially L-shaped cross section in a direction perpendicular to the longitudinal direction. , 330R (see FIGS. 7A to 7E),
(3) A member that is welded and fixed so as to protrude rearward at the rear end portions of the pair of left and right rail members 330L and 330R, and is transported to the vicinity of the end portion 212b of the transport support bar 212 of the transport path 201b on the downstream side. The bottom 51b on the left and right ends on the front end side of the seedling tray 50 has come into contact with the member, so that the member starts to rotate and shifts from the non-retracted position to the retracted position, and a pair of left and right rail members 330L, 330R is switched to the first posture that can support the seedling tray 50, and the periphery of the long side edge portion 53b and the bottom 51b of the right and left ends of the seedling tray 50 are not in contact with the member, so that the member is rotated as described above. Rotating in the opposite direction to the movement, shifting from the retracted position to the non-retracted position and switching the pair of left and right rail members 330L and 330R to the second position in which the seedling tray 50 cannot be supported It is possible pair of rail guide members 310L, and 310R,
(4) The seedling tray holder for preventing the seedling tray 50 from shifting from the left and right direction and falling off the rail members 330L and 330R while the seedling tray 50 is being conveyed on the pair of left and right rail members 330L and 330R A bar 301;
(5) A pair of left and right rail member front support stays 341L and 341R that rotatably support the front side of both ends of the long plate shape of the pair of left and right rail members 330L and 330R;
(6) A pair of left and right rail member rear side support stays 342L and 342R that rotatably supports the rear side of both ends of the long plate shape of the pair of left and right rail members 330L and 330R;
(7) A seedling tray housing rod 350 mainly formed of a wire having a circular cross section or the like that receives and accommodates 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 conveyance path 201a of the seedling tray conveyance device 210, and the pair of left and right rail member rear side support stays 342L and 342R. Is fixed to the rear end portion of the seedling tray receiving basket 350.

  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 shape is a seedling tray. 50 is a first rail portion 332a (see FIG. 7 (a)) capable of supporting a long side end portion 53a (see FIG. 4 (b)) on the bottom side of both left and right ends from below, and the L-shaped A portion corresponding to the long side is a second rail portion 332b that is 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 are in contact with the front end portions of the pair of left and right rail members 330L and 330R, so that the seedling tray 50 has the front ends of the pair of left and right rail members 330L and 330R. 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 from the portion. Moreover, the corner | angular part 332c1 of the seedling tray stopper 332c is notched diagonally (refer FIG.7 (c)). Accordingly, the pair of left and right rail members 330L and 330R take the second posture (see FIG. 9), and even when the plurality of seedling trays 50 accommodated in the seedling tray accommodating basket 350 are taken out simultaneously, The pair of left and right rail members 330L and 330R can be smoothly taken out without interfering with the corner portion 332c1 of the seedling tray stopper 332c.

  Further, 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 take the second posture, and even when the plurality of seedling trays 50 accommodated in the seedling tray accommodating bowl 350 are taken out simultaneously, the seedling tray 50 has the pair of left and right rail members. It can be smoothly taken out without interfering with the front side of the second rail portion 332b in 330L and 330R.

  Further, rod-like members 333 having a circular cross section are fixed to both ends of the front and rear ends of the pair of left and right rail members 330L and 330R to rotatably support the pair of left and right rail members 330L and 330R. Has been. That is, a part of the surface on the long side of the rod-shaped member fixing plate 333a bent in a substantially L shape is weld-fixed to the back surfaces of both ends of the first rail portion 332a in the pair of left and right rail members 330L and 330R. The rod-shaped member 333 is welded and fixed to the end portion on the short side of the rod-shaped member fixing plate 333a so that the rod-shaped member 333 protrudes forward or backward, 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 also separated from the second rail portion 332b by a predetermined dimension. Even when the plurality of seedling trays 50 accommodated in the seedling tray accommodating rod 350 are taken out at the same time, the pair of left and right rail members 330L and 330R take the second posture. 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 rod-like members 333 provided at the both ends of the pair of left and right rail members 330L and 330R, the front-side rod-like member 333 is formed in the front through hole 341a (FIG. 9) formed in the rail member front-side support stay 341L (341R). , See FIG. 10), and the rear rod-like member 333 is supported by the rear through hole 342 b (see FIGS. 9 and 10) formed in the rail member rear support stay 342 </ b> L (342 </ b> R). ) So as to be rotatable.

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

  That is, as shown in FIG. 8, the left rail guide member 310 </ b> L includes (1) a substantially rectangular rail guide base portion 311 and (2) one end portion 311 a in both longitudinal ends of the rail guide base portion 311. The left rail guide member 310L is bent from the left end 311b of the rail guide base 311 at a right angle with respect to the rail guide base 311. A substantially rectangular rail guide fixing portion 312 for fixing to the rear end portion of the two rail portions 332b; and (3) bending upward from the right end portion 311c of the rail guide base portion 311 at a right angle with respect to the rail guide base portion 311. The rail guide first part 31, with respect to the substantially rectangular rail guide first part 313 and (4) the rail guide first part 313. A substantially rectangular rail guide Part 2 314 from the upper end portion 313c bent at a right angle to the body center side of a plate-shaped member that is constructed from. Further, as shown in FIG. 8, one end 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 parts is one end 314a and the other is the other end 314b, the other end 311d of the longitudinal ends of the rail guide base 311 and the other end 313b of the rail guide first part 313 The other end portion 314b of the rail guide second portion 314 is located in the same plane, and the length from the other end portion 313b of the rail guide first portion 313 to the one end portion 313a is based on the 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 to the one end 314a of the rail guide second portion 314. As shorter than the length of up to one end portion 313a from the other end 313b of the part 313, the left rail guide member 310L is formed.

  That is, the pair of left and right rail guide members 310L and 310R is 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-retracting 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 end portion 212b of the transport support bar 212 of the downstream transport path 201b are side edge portions 314c along the longitudinal direction of the rail guide second portion 314. (Refer to FIG. 5 and the side edge portion 314c indicated by a two-dot chain line in FIG. 9).

  In addition, the pair of left and right rail guide members 310L and 310R has a pair of left and right rails when the bottom portions 51b and the like of the left and right ends of the seedling tray 50 conveyed 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) in the 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.

  In addition, the pair of left and right rail members 330L and 330R are linked to 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-like member 333 is used as a rotation axis. From the second posture, rotation is started (see arrow F indicating counterclockwise 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 portion 332a. In addition, the second rail portion 332b is formed so as to be switched to the first posture that can be supported from the side. The bottom portions 51b and the like on both the left and right sides of the seedling pot 51 that are subsequently conveyed continue to abut on the rail guide second portions 314 and the like of the pair of left and right rail guide members 310L and 310R. , 330R maintain the first posture. The maintenance of the first posture will be further described later.

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

  Thereby, 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 is arranged inside the pair of left and right rail member rear support stays 342L and 342R, that is, the seedling tray 50 is The pair of left and right rail members 330L and 330R can be prevented from rotating too much by contacting the upper end of the rear support stay edge 342a (see FIG. 9) on the existing side.

  Furthermore, when the pair of left and right rail guide members 310L and 310R shifts from the non-retracting posture to the retracting posture, as described above, the pair of left and right rail members 330L and 330R are switched from the second posture to the first posture. The load of the seedling tray 50 is applied to the first rail portion 332a through the long side end portions 53a at the left and right ends, and the pair of left and right rail members 330L and 330R start to rotate 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 brought into contact with the side surface of the seedling pot 51 of the seedling tray 50 being conveyed, and The rail guide second part 314 is brought into contact with the bottom 51b of the nursery pot 51 being conveyed (rail guide shown by the solid line in FIG. 9). Since the pair of left and right rail guide 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 , 330R is configured to maintain the first posture.

  Thereby, even when both left and right end portions 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 terminal end portion 212b of the transport support bar 212 of the transport path 201b on the downstream side. The left and right bottom portions 51b and the like come into contact with the side edge 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. To the first posture.

  Further, 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 conveyance roller 320, both the left and right sides of the seedling tray 50 Is supported from below by a pair of left and right first rail portions 332a and is also supported from both left and right side surfaces by a pair of left and right second rail portions 332b. 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 separated by a predetermined distance W from the seedling tray stopper 332c and the rail guide first The position where the second part 314 does not come into contact with the bottom part 51b of the seedling pot 51 at the left and right ends of the rear end part (see reference numeral 50B1 in FIG. 10) of the seedling tray 50 However, even after the seedling tray 50 passes through the position and slides further forward, the front end portion of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) reaches the position closest to the seedling tray stopper 332c. Up to this point, the rail guide first part 313 is configured to contact the side surface of the seedling pot 51 of the seedling tray 50 (see the rail guide first part 313 indicated by the solid line in FIG. 9). Since the downward rotation of the rail members 330L and 330R (see arrow G in FIG. 9) is prevented, the pair of left and right rail members 330L and 330R can maintain the first posture. In addition, in FIG. 10, the line shown with the dashed-two dotted line which attached | subjected code | symbol 50B2 is when the front end part (refer code | symbol 50F2 of FIG. 10) of the seedling tray 50 arrives at the position nearest to the seedling tray stopper 332c. The position of the rear end part of the seedling tray 50 is shown.

  Accordingly, 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 a position closest to the seedling tray stopper 332c. Since 330L and 330R maintain the first posture, they do not fall to the seedling tray accommodating rod 350 side, but the front end portion of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) is a position immediately adjacent to the seedling tray stopper 332c. Since the rail guide first part 313 does not come into contact with the side surface of the seedling pot 51 of the seedling tray 50, the downward rotation of the pair of left and right rail members 330L and 330R (see arrow G in FIG. 9) is prevented. 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 pair of left and right rail members 330L and 330 By the action of the own weight, the rod-like member 333 as the pivot center, (see arrow G shown clockwise in FIG. 9) rotates and downward shifts from the first position to the second position. As a result, the seedling tray 50 falls to the seedling tray housing basket 350 side in its posture due to its own weight.

  As a result, the empty seedling tray 50 conveyed to the front end portions of the pair of left and right rail members 330L and 330R starts to drop in the posture, that is, almost simultaneously from the front end portion to the rear end portion. It is neatly aligned in the storage bowl 350 in the vertical direction.

  That is, according to the above configuration, since the front end portion of the seedling tray 50 is less likely to hang than in the conventional case, the seedling tray 50 already stored in the seedling tray storage basket 350 is difficult to be pushed forward. The fall of the seedling tray 50 can be suppressed.

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

  In addition, the seedling tray holding bar 301 described above is a pair of left and right rails in a side view between a front part 301a in a front-up state, a rear part 301b in a rear-up state, and a front part 301a and a rear part 301b. When the members 330L and 330R are in the first posture, the central portion 301c is in communication with 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, when the seedling tray 50 slides forward on the upper surface of the first rail portion 332a, the center portion 301c is a guide for the seedling tray 50. The bar is inserted into the space 54 for bar insertion (see FIGS. 4A and 4B).

  Thereby, while the seedling tray 50 is being conveyed on the pair of left and right rail members 330L and 330R, it is possible to prevent the seedling tray 50 from shifting from the left and right direction and falling off from the rail members 330L and 330R. Since the front portion 301a is in the forwardly raised state, the seedling tray 50 can be removed smoothly without interfering with the seedling tray holding bar 301 even when simultaneously removing the plurality of seedling trays 50 accommodated in the seedling tray accommodating rod 350. .

  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 rotated together. With a simple configuration that is supported, the transported seedling tray 50 abuts against the pair of left and right rail guide members 310L and 310R, and reliably rotates the pair of left and right rail members 330L and 330R. The second posture can be switched.

  For example, as another configuration example for 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 connected to the link member by contacting a predetermined link member. Although a configuration in which the link mechanism rotates in a complex manner with the link mechanism is also conceivable, in such a configuration example, the number of parts increases and the structure becomes 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 with a simple configuration, so the number of parts can be reduced, Since the structure is simple, it can be realized at low cost.

  In addition, the bottom part 51b of the both ends side of the seedling tray 50 of this Embodiment corresponds to an example of the predetermined | prescribed site | part of the both right and left sides of the seedling tray of this invention.

  Next, the seedling tray receiving 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 330 </ b> L and 330 </ b> R are stacked at the storage position is shown as a seedling tray 50 </ b> A positioned at the storage position, and the outer shape is indicated by a two-dot chain line In addition, when the operator pulls out the seedling tray 50A located at the accommodation position forward (see arrow H in FIG. 6), the posture is changed to a front-up position compared to the posture of the seedling tray 50A located at the accommodation position. The outer shape of the seedling tray 50B positioned at the take-out position is indicated by a two-dot chain line.

The seedling tray receiving bowl 350 is
(1) A round bar member for fixing the seedling tray housing rod 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 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 the rear end of the both ends is a pair of left and right rails. A pair of left and right storage rod fixing bars 351L, 351R welded and fixed below the rear through hole 342b in the member rear support stays 342L, 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 seedling tray 50 falling;
(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 storage position. When the operator pulls forward, the posture of raising the seedling (referred to as the collection posture) (referred to as the collection posture) as compared to the posture of the seedling tray 50A located at the accommodation position (referred to as the collection position in FIG. 6). And a front rising support member 354 formed to be changeable on the seedling tray 50B).

  In addition, a hose fixing portion 360 for fixing the fertilizer hose is mounted at the center position in the left-right width direction of the first support base portion 352A1 of the rear end support member 352 so as to protrude rearward and obliquely downward. . A substantially rectangular frame-like member 361 is attached to the rear end portion of the hose fixing portion 360 in a rear view for holding the fertilizer hose. The first support base 352A1 will be further described later.

Also, the rear end support member 352 is
(1) Rear end first support that is substantially U-shaped in rear view and whose upper ends at both ends of the U-shape are welded and fixed to the lower surface side of the rear part of the pair of left and right housing rods 351L and 351R. A member 352A;
(2) In the bent portion of the rear end first support member 352A bent at substantially right angles at the lower ends of both ends of the U shape, the pair of left and right front end portions 352La and 352Ra is inside the bent portion and the seedling tray 50 Are bent at a substantially right angle from the rear ends of a pair of left and right second support bases 352L1 and 352R1 which are fixedly welded at intervals smaller than the left and right widths and extend rearward in parallel with each other by a predetermined dimension. Furthermore, it is comprised from the left-right paired rear end part 2nd support member 352L, 352R which the front-end | tip part bent by the substantially right angle back was fixed to the lower part of the upstream conveyance path 201a.

  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 are substantially oppositely shaped reinforcing members 355 on the outer surfaces of the left and right ends. The front end portion 355a of the reinforcing member 355 is fixed by welding to the outer surface of the front end portion of the pair of left and right housing rod fixing bars 351L and 351R.

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

  Further, the front end support member 353 is substantially U-shaped when viewed from the back, 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 rod fixing bars 351L and 351R. Yes.

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

  In the present embodiment, the seedling tray 50 dropped from the pair of left and right rail members 330L, 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, 352R1. The posture (accommodating posture) of the seedling tray 50 positioned at the accommodating 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 rising support member 354 has a substantially L shape in a side view, and the front rising first support base 354 </ b> A corresponding to the long side of the L shape has an L shape. The front rising second support base 354B corresponding to the short side is configured, 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 support base portion 354A is welded to the center position of the left and right widths of the front end support base portion 353a so that the first front support base portion 354A is in a front rise posture (collection posture) in side view. The rear end portion of the second support base portion 354B that is fixed forward and the center position of the left and right widths of the first support base portion 352A1 is such that the second support base portion 354B that rises forward is in a rearward posture in a side view. It is fixed by welding.

  Thereby, when the operator pulls out the seedling tray 50A located at the storage position forward (see arrow H in FIG. 6), the seedling tray 50A has the front end support base 353a and the front rising first support base 354A. Since the support state changes so as to be supported by the second front support base 354B, the posture is changed to a front-up posture as compared to the posture of the seedling tray 50A located at the storage position and moved to the take-out position. I can do it. In this way, the front end portion of the seedling tray 50B located at the take-out position can be moved upward, so that the riding rice transplanter 1 is being planted in the field (at this time, the position of the planting device 200 is lowered). However, it is easy to take out the seedling trays 50 that are stacked one by one from the seedling tray accommodating 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 rising height from the surface of the first rail portion 332a is reduced. (See FIG. 7 (b)), even when a plurality of stacked seedling trays 50 are collectively taken out from the seedling tray accommodating bowl 350, the seedling tray 50 is located on the front side of the second rail portion 332b in the pair of left and right rail members 330L and 330R. Can be removed smoothly without interfering with

  Further, since the corner portion 332c1 of the seedling tray stopper 332c is cut obliquely (see FIG. 7C), even when a plurality of stacked seedling trays 50 are collectively taken out from the seedling tray containing basket 350, The seedling tray 50 can be taken out smoothly 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 bar 301 is in a forwardly raised state (see FIG. 6), even when the seedling trays 50 that are stacked in a plurality are stacked and taken out from the seedling tray accommodating bowl 350, the seedling tray 50 is It can be removed smoothly without interfering with the tray holding bar 301.

  Further, the innermost side of the pair of left and right rail member front support stays 341L and 341R, that is, the front support stay edge 341b (see FIG. 9) on the side where the seedling tray 50 is present, Even when the seedling tray 50 is removed from the storage basket 350, the seedling tray 50 is formed so as not to interfere with the front support stay edge 341b, so that the seedling tray 50 can be removed 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 is an example of the guide portion of the present invention, and the seedling tray accommodating basket 350 according to 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 is an example of the rail member of the present invention. The first support base 352A1 and the pair of left and right second support bases 352L1 and 352R1 of this embodiment are examples of the first support of the present invention, and the front end support base 353a of the present embodiment is the present invention. This is an example of the second support portion. In addition, the configuration including the first rising support base portion 354A and the second rising support base portion 354B in the present embodiment is an example of the third support portion of the present invention.

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

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

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

  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. FIG.

  In the riding rice transplanter 1 of the type in which the pot seedling is taken out from the seedling tray 50 and planted in the field, the upper surface of the hopper lid is used when the operator collects the empty seedling tray 50 accommodated in the seedling tray accommodating rod 350. In many cases, the seedling tray 50 is 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 rib 401, it is possible to reduce contact with the top surface of the hopper lid and maintain appearance performance (look). I can do it.

  Further, by providing the first rib 401, even when the seedling tray 50 is organized 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, on the upper surfaces of the left and right pair of the left second hopper lid 410L and the right second hopper lid 410R, the second ribs 411 are orthogonal to the traveling direction of the riding rice transplanter 1. This is an example in which a plurality are provided (see FIGS. 12A and 12B).

  In the second configuration example, the second ribs 411 are arranged at a pitch that allows the ribs to be inserted between the seedling 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 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 a left second hopper lid 410L shown in FIG. FIG.

  Thereby, 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. The appearance performance (appearance) can be maintained.

  Further, by providing the second rib 411, as in the case of the first configuration example, 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, It is possible to improve the workability of the recovery operation of the empty seedling tray 50 by a person.

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

  Next, the third configuration example has a size that fits the seedling pot 51 of the empty seedling tray 50 protruding to a predetermined height from the upper surface of each of the left and right pair of left third hopper lid 420L and right third hopper lid 420R. This is an example in which a first enclosing member 421 that is a substantially rectangular frame in plan view is provided (see FIGS. 13A to 13D). The front end portion of the portion protruding to the predetermined height of the first enclosing member 421 has long side end portions 53a along the long sides 53L and 53R on both the left and right sides of the empty seedling tray 50 (FIG. 4 (a), FIG. 4 ( b) see)) and the like.

  Further, in the third configuration example, the first surrounding member 421 is disposed on the upper surface of each of the pair of left and right left third hopper lids 420L and right third hopper lid 420R so as to be close to the outside of the fuselage (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. FIG. In FIG. 13A, a right fourth hopper lid 430R of a fourth configuration example described later is shown at the same time.

  FIG. 13C is a schematic plan view of the right third hopper lid 420R for explaining the third configuration example, and FIG. 13D is a right third hopper shown in FIG. 13C. It is a schematic side view of lid 420R. In FIG. 13C, a left fourth hopper lid 430L of a fourth configuration example to be described later is shown at the same time.

  Accordingly, by providing the first enclosing 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 is stacked. Since it becomes easy, collection work can be facilitated.

  Also in this configuration, since the tip of the portion protruding to the predetermined height of the first surrounding member 421 supports the seedling tray 50, the upper surface of the hopper lid is hardly damaged.

  In addition, the first enclosing member 421 is arranged close to the outside of the machine body on the upper surfaces of the left and right pair of the left third hopper lid 420L and the right third hopper lid 420R, so that it is easy to secure a working space. The recovery operation of the seedling tray 50 can be performed outside the machine body, and the operator's work can be facilitated by the fact that the outside of the machine body has closer access to the supplementary seedling mounting frame 15.

  Next, in the fourth configuration example, similar to the above-described third configuration example, empty seedlings projecting to a predetermined height from the upper surfaces of the left and right pair of the left fourth hopper lid 430L and the right fourth hopper lid 430R, respectively. This is an example in which a second enclosing member 431 that is a substantially rectangular frame body is provided in a plan view of a size that accommodates the seedling pot 51 of the tray 50. The tip of the part protruding to the predetermined height of the second enclosing member 431 has long side end portions 53a along the long sides 53L and 53R on the left and right sides of the empty seedling tray 50 (FIG. 4 (a), FIG. 4 ( b) see)) and the like.

  However, in the fourth configuration example, unlike the third configuration example described above, the second enclosing member 431 is brought closer to the inside of the fuselage on the upper surfaces of the left and right pair of left fourth hopper lid 430L and right fourth hopper lid 430R. (Refer to FIG. 13A and FIG. 13C).

  Thus, by providing the second surrounding member 431, as in the third configuration example, 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, Since empty seedling trays 50 can be easily stacked, the collection work can be facilitated.

  Also in this configuration, since the tip of the portion protruding to the predetermined height of the second enclosure member 431 supports the seedling tray 50, the upper surface of the hopper lid is hardly damaged.

  In addition, the second enclosing member 431 is arranged 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, so that the second enclosure member 431 can be attached to the seedling tray storage basket 350. Since access is almost uniform, the operator's work is facilitated.

  In addition, the hopper 40 of this Embodiment corresponds to an example of the hopper of this invention. Also, 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 corresponds to an example of a lid portion of the hopper of the present invention. Moreover, the 1st rib 401, the 2nd rib 411, the 1st surrounding member 421, and the 2nd surrounding member 431 of this Embodiment are examples of the convex-shaped member of this invention.

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

  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 structure of the rotor stay 110 that holds the frame of the leveling rotor 100.

  In the riding rice transplanter 1 according to the present embodiment, as shown in FIG. 14, the rotor stay 110 is configured to protrude downward from the planting part frame 240 connecting the planting device 200.

  As a result, the conventional structure was increased in weight because it was a disadvantageous structure for rotor shaft damage or rigidity due to insufficient rigidity due to the suspension of the rotor by suspending the rotor on the frame that hung from side to side overhanging from the planting base suspension base Compared to the above, it has a simple configuration, and both weight reduction and rigidity improvement can be achieved.

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

  FIG. 15 is a schematic partial enlarged side view of the lower part of the planting apparatus 200 and its periphery for explaining the mounting structure of the motor stay 510 for mounting the motor 500 for moving the leveling rotor 100 up and down.

  In the riding rice transplanter 1 according to 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 in the same manner as the rotor stay 110 described above.

  As a result, the mounting of the component parts of the leveling rotor is consolidated in the planting part frame 240 as compared with the conventional configuration, which is the cause of the increase in the number of parts and the weight because the leveling rotor is manually moved up and down. As a result, a significant weight reduction, a reduction in the number of parts, and an increase in strength can be realized at the same time.

  Next, in the riding rice transplanter 1, when the leveling rotor 100 is moved up and down by the motor 500, the connection configuration of the lifting gear 520 and the lifting arm 530 will be described with reference to FIGS. 16 (a) and 16 (b). To do.

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

  In the riding rice transplanter 1 according to the present embodiment, as shown in FIGS. 16A and 16B, in the configuration in which the leveling rotor 100 is moved up and down by the motor 500, between the lifting gear 520 and the lifting arm 530, An articulated arm 540 is provided.

  Further, the articulated arm 540 is rotatably connected to the upper end portion of the elevating arm 530 by the first connecting shaft 541. In addition, an arc-shaped long 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 part of the fan shape is rotatably connected to the articulated arm 540 by a second connecting shaft 543 (FIG. 16). (A), FIG.16 (b)). Further, a slide pin 521 is erected on the side surface of the elevating gear 520 at a position where it is loosely 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 farm scene, even if the pushing load or overload acts on the articulated arm 540, the articulated arm 540 is shown in FIG. In a side view, the second hole 542 formed in the articulated arm 540 is rotated in the clockwise direction with the second connecting shaft 543 as the rotation center, and is erected on the side surface of the lifting gear 520. Since the slide pin 521 slides relatively in the elongated hole 542 toward the upper end side of the elongated hole 542, transmission of the load and overload to the lifting gear 520 side is reduced.

  As a result, when the leveling rotor 100 is pushed up by the unevenness of the farm scene, the pushing load or overload can be released via the articulated arm 540, and durability of the leveling rotor 100 and the lifting gear 520 and the like can be improved. It can be secured.

  In the riding rice transplanter 1 according to 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 to the articulated arm 540 compared to the conventional configuration in which the pulling spring of the center rotor is hooked on the lifting arm. I can do it. In addition, the hook position of the lifting spring 550 fluctuates in proportion to the lifting and lowering of the leveling rotor 100 because the hook is hooked to the arm that lifts and lowers the leveling rotor 100, so that the width of the pulling angle and the displacement of the load is reduced.

  Next, in the riding rice transplanter 1, the structure of the above-mentioned 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 shows the feed claw 211 and its peripheral members shown in FIG. It is the general | schematic partial expanded rear view which looked at the structure of from the back.

  In the riding rice transplanter 1 according to the present embodiment, as shown in FIGS. 17A and 17B, the one end 610a of the rotation spring 610 attached around the rotation shaft 600 of the feed claw 211 is provided. The spring hook portion 211a provided at the base portion of the feed claw 211 that contacts and always presses in the I direction has a tip portion of the spring hook portion 211a that contacts a projection portion 621 provided at the upper end portion of the arm plate 620. It is configured to protrude so that it can touch.

  The arm plate 620 is a member that swings the feed claw 211 in the vertical direction (see arrow B in FIGS. 5 and 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 in the I direction by the one end portion 610a of the rotation spring 610 via the spring hook portion 211a.

  Thereby, for example, when the rotating spring 610 provided to press the feed claw 211 is damaged, the pressing force against the spring hook portion 211a is lost, and the feed claw 211 is, as shown in FIG. The rotation is performed in the direction of arrow J with the rotation shaft 600 as the rotation center, but the rotation is stopped at the position where the tip of the spring hook portion 211a is in contact with the projection 621 of the arm plate 620 (FIG. 17A). ) (Refer to the feed claw 211 shown by a two-dot chain line).

  That is, even if the rotating spring 610 is damaged, the tip end portion of the spring hook portion 211a abuts on the protruding portion 621 of the arm plate 620 and restricts the rotation range of the feeding claw 211. It can be prevented from moving and interfering with other members to cause secondary damage.

  In the above-described embodiment, the case where 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 has been described (FIG. 7B). For example, as shown in FIG. 11, the pair of left and right rail guide members 310 </ b> L and 310 </ b> R is inclined and fixed by a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members 330 </ b> L and 330 </ b> R, You may fix so that the conveyance path | route side of the seedling tray 50 may be approached. Accordingly, when the pair of left and right rail guide members 310L and 310R are in the non-retracting posture (see the left rail guide member 310L indicated by the two-dot chain line in FIG. 9), the rail guide second portion 314 is moved in the longitudinal direction. Since the rear end side of the side edge portion 314c along the side is located further inside of the conveyance path of the seedling tray 50, the pair of left and right even if the seedling tray 50 is deformed and the shape of the seedling tray 50 varies. The rail guide members 310L and 310R can easily catch the bottom 51b of the seedling 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 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. It is a schematic plan view which shows the state which the rail member 330L has taken the 2nd attitude | position.

  Further, in the above-described embodiment, as the seedling tray accommodating rod 350, the empty seedling tray 50 that has been transported to the front end while sliding on the pair of left and right rail members 330L and 330R and then dropped is moved by sliding. A structure having a part that can be received while maintaining the inside posture and having a part that can be changed to a front-up position by pulling forward the seedling tray 50 stacked in the part. However, the present invention is not limited to this, for example, as a seedling tray housing rod 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 is good also as a structure which has the site | part received so that it may become a posture of rising forward compared with the attitude | position during slide movement. Even in this configuration, similarly to the above, even when the riding rice transplanter 1 is being planted in the field (in this case, the position of the planting device 200 is lowered), the seedling tray 50 in which a plurality of sheets are stacked. Can be easily taken out from the seedling tray containing 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 conveyed downstream of the conveyance path, and are rotated so that the non-retracting posture is obtained. 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 the transition to the retracted posture has been described, but is not limited to this, for example, the pair of left and right rail members 330L and 330R If it is the structure which can be made to transfer to a 1st attitude | position from a 2nd attitude | position, it replaces with a pair of left and right rail guide members 310L and 310R, and a pair of left and right rail guide members are front end parts on the left and right sides of the seedling tray 50. It is good also as a structure which transfers to a retracted attitude | position from a non-retreating attitude | position by contact | abutting and rotating by (refer code | symbol 53a of FIG. 4 (a), FIG.4 (b)). 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 other 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 correspond to an example of predetermined portions on both the left and right sides of the seedling tray of the present invention.

  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 weight of the pair of left and right rail members 330L and 330R. However, the present invention is not limited to this. 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 support stays 342L and 342R are rotated via a torque spring (not shown). It may be connected so that movement is possible. Specifically, the rear end portion of the rod-shaped member 333 is inserted into the hole portion 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 the torque The front end portion of the spring is fixed to the rear end portion of the first rail portion 332a, and the rear end portion of the torque spring is fixed to the 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-retracting posture, the seedling tray 50 that has 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. The bottom portions 51b and the like at both the left and right ends of the rails come into contact with the side edge portion 314c along the longitudinal direction of the rail guide second portion 314 (see FIG. 5 and FIG. 9). When the lug members 330L and 330R are shifted from the second position to the first position, a rotational torque for returning from the first position to the second position, that is, an urging force for returning from the first position to the second position is generated. This is a configuration that occurs with respect to the pair of left and right rail members 330L and 330R.

  Thus, in addition to the effect 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-described rotational torque (biasing force) by the torque spring also acts, so the pair of left and right rail members 330L, 330R rotates downward (see 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 from the first posture to the second posture of the pair of right rail members 330L and 330R is assisted, so for example, the posture of the pair of right rail members 330L and 330R. Even if mud or the like adheres to the rotating part or the seedling tray 50 that rotates when the angle is changed, the rotating operation is stabilized.

  The work vehicle according to the present invention is useful as a work vehicle in which seedling trays can be aligned and stacked more neatly than conventional.

DESCRIPTION OF SYMBOLS 1 Passenger rice transplanter 2 Traveling vehicle 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 50 Seedling tray 100 Leveling Rotor 200 Planting device 210 Seedling tray transfer device 220 Seedling planting unit 230 Float 300 Recovery device 310L Left rail guide member 310R Right rail guide member 330L Left rail member 330R Right rail member 350 Seedling tray storage trough

Claims (6)

Traveling vehicle body (2),
A working vehicle including a planting device (200) connected to a rear portion of the traveling vehicle body (2) and taking out the pot seedling from a seedling tray (50) in which the pot seedling is arranged and planting the seedling on a farm field,
The planting device (200)
A seedling tray transport device (210) for transporting the supplied seedling tray (50) from the upstream side to the downstream side of the transport path;
A seedling planting section (220) that is provided in the middle of the transport path and takes out the pot seedling from the transported seedling tray (50) to be planted in the field;
The pot seedling is taken out at the seedling planting part (220), and has a recovery device (300) for recovering the seedling tray (50) sent out from the end part of the transport path,
The recovery device (300)
A guide unit (310L) that guides the seedling tray that has arrived at the terminal end of the conveyance path while maintaining a predetermined posture forward from the terminal portion, and drops the guided seedling tray from the predetermined posture. 310R, 330L, 330R),
A seedling tray accommodating part (350) for receiving and accommodating the seedling tray falling from the guide part (310L, 310R, 330L, 330R),
The bottom part of the seedling tray housing part receives the falling seedling tray so that the front end part of the seedling tray is in a front rising position from the rear end part compared to the predetermined attitude. The seedling tray that has been received or received by falling is provided with a part that can be changed to a posture in which the front end portion of the seedling tray rises forward from the rear end portion as compared with the predetermined posture. A working vehicle characterized by that. The guide portions (310L, 310R, 330L, 330R) have rail members (330L, 330R) that can support the left and right end portions of the seedling tray from the side surface side and the lower surface side and can guide them forward.
The work vehicle according to claim 1, wherein a width of a front side of a portion of the rail member that can support the seedling tray is narrower than a width of a rear side. The guide portions (310L, 310R, 330L, 330R) are rail members (330L, 330R) that can support the left and right end portions of the seedling tray from the side surface and the lower surface side and can be guided forward, and the rail members. Rail guide members (310L, 310R) coupled to (330L, 330R) and capable of rotating the rail members,
The rail members (330L, 330R) can take a first posture that can support the seedling tray and a second posture that cannot support the seedling tray,
The rail guide members (310L, 310R) take a retreating posture to retreat from the movement path of the predetermined part on both the left and right sides while the predetermined part on the left and right sides of the seedling tray are in contact with each other. While the predetermined parts on the left and right sides are not in contact with each other, it takes a non-retreating posture,
While the rail guide members (310L, 310R) are in the retracted position, the rail members (330L, 330R) continue to take the first position, and the rail guide members (310L, 310R) are in the non-retracted position. The work vehicle according to claim 1, wherein the rail member (330L, 330R) takes the second posture when taken. The bottom portion of the seedling tray accommodating portion has the changeable portion,
The bottom portion of the seedling tray accommodating portion is
A first support portion (352A1, 352L1, 352R1) for supporting the rear end side of the seedling tray from below;
A second support part (353a) located on the front side of the first support part and supporting the seedling tray from below;
It is located between the first support part and the second support part, and can be changed to the front-up position compared to the attitude of the seedling tray supported by the first support part and the second support part. The work vehicle according to any one of claims 1 to 3, further comprising a third support portion (354A, 354B) formed.   The work vehicle according to claim 4, wherein a 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. A fertilizer application device for applying fertilizer stored in the hopper (40) to the field;
Protruding members (401, 411, 421, 431) are provided at positions where the seedling tray can be supported among the upper surfaces of the lid portions (400L, 400R, 410L, 410R, 420L, 420R, 430L, 430R) of the hopper. The work vehicle according to claim 1, wherein the work vehicle is a vehicle.

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