JP7458128B2 - Seedling transplanter - Google Patents

Description

The present invention relates to a seedling transplanter that works in a field.

A conventional seedling transplanter is supplied with a resin seedling tray on which many potted seedlings are arranged vertically and horizontally, and a planting device is connected to the rear of the vehicle body to take out the potted seedlings from the seedling tray and plant them in the field. Such a configuration is known (for example, see Patent Document 1).

Further, in the conventional seedling transplanting machine described above, the soil leveling rotor is supported from the machine body side, and the height is also manually adjusted.

JP 2016-101129 Publication

However, with the above conventional configuration, the soil leveling rotor is the same width as the planting device, so when the planting device is removed, it extends significantly beyond the width of the machine. This necessitated a mechanism to make the left and right ends of the soil leveling rotor detachable to prevent damage from contact with the outside.

In addition, the frame that supports the soil leveling rotor from the traveling vehicle body is complex and heavy, which reduces straight-line stability and causes the planting trajectory to become distorted.

In view of the above-mentioned problems of the conventional seedling transplanting machine, the present invention provides a seedling transplanting machine that can significantly reduce the weight of the members constituting the soil leveling rotor, reduce the number of parts, and increase the strength at the same time. The purpose is to

In order to solve the above-mentioned problem, the present invention according to claim 1 conveys the seedling tray (50) from the upstream conveyance path (201a) to the downstream conveyance path (210b) of the conveyance path (201). a seedling tray conveying device (210) for taking out potted seedlings from the seedling tray (50) being conveyed by the seedling tray conveying device (210); a planting device (200) for planting seeds in a field, a collection device (300) for collecting the seedling tray (50) sent out from the terminal end of the conveyance path (201), and the planting device (200). The seedling transplanter is equipped with a lifting link device (30) for raising and lowering the seedlings, and a soil leveling device for leveling the field where the potted seedlings are planted. A planting main frame (240a) and a side frame (240b) fixed to the left and right sides of the planting main frame (240a) are provided, and the planting main frame (240a) is located closer to the front of the aircraft than the side frame (240b). The earth leveling device has a protruding shape, and the earth leveling device is composed of a rotary earth leveling rotor (100), and an earth leveling frame (100a) serving as a fulcrum that allows the rotating body leveling rotor (100) to move up and down, and the earth leveling frame (100a). A soil leveling stay is provided to hold the soil, and the soil leveling stay is composed of a first leveling stay (110a) supported from the main planting frame (240a) and a second leveling stay (110b) supported from the side frame (240b). The first ground leveling stay (110a) is in a position facing downward of the aircraft body, the second ground leveling stay (110b) is in a position facing downward and forward of the aircraft body, and the planting is carried out at the rear lower side of the conveyance path (201a). A main frame (240a) and the side frame (240b) are provided, and a motor stay (510) that supports a motor (500) that allows the soil leveling device to move up and down is attached to the planting main frame (240a). (510) is located above the planting main frame (240a) and the side frame (240b) and below the rear of the collection device (300), and connects the rotary body leveling rotor (100) to the ground leveling frame. A lifting arm (530) and a lifting gear (520) that can be lifted up and down using the motor stay (510) as a fulcrum are provided, and a gear frame (520a) that fixes the lifting gear (520) to the front side of the motor stay (510) is provided. , the rotational force from the motor (500) is transmitted to the lifting gear (520), and the lifting arm (530) is connected to the front end of the lifting gear (520), and the lifting arm (530) is connected to the front end of the lifting gear (520). ) and the lifting gear (520), a ground leveling arm (540) having a rotation center (543) is provided, and the ground leveling arm (540) is provided on one side with respect to the rotation center (543) of the ground leveling arm (540). A connecting shaft (541) connects the upper end of the lifting arm (530) so that it can rise and fall, and a long hole (542) is formed on the other side with respect to the rotation center (543) of the earth leveling arm (540); The seedling transplanter is characterized in that a slide pin (521) movable within the elongated hole (542) is erected on the side surface of the elevating gear (520).

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According to the present invention as set forth in claim 1, the soil leveling stay that supports the soil leveling device is installed from the planting main frame that supports the main part of the planting device and the side frames that are fixed to the left and right sides of the planting main frame. By providing this, the soil leveling device is supported from the planting device side, thereby improving soil leveling performance.

It also consists of a first soil leveling stay that is supported from the planting main frame and a second earth leveling stay that is supported from the side frame, with the first leveling stay pointing towards the bottom of the aircraft, and the second leveling stay facing towards the front and lower part of the aircraft. Because it is an attitude. Since the soil leveling device can be supported more firmly, it is less likely to be damaged even in rough fields.

In addition, because the rotor was suspended by building leveling stays on the side frames 240b that overhang left and right from the planting section suspension base (planting main frame 240a), the rotor shaft was damaged due to lack of rigidity, and the configuration was disadvantageous in securing rigidity. Compared to the conventional structure, which was heavier, it has a simpler structure, achieving both weight reduction and improved rigidity.

In addition, by attaching a motor stay that supports the motor that allows the soil leveling device to move up and down to the planting main frame, the planting main frame is strong and the motor is less susceptible to vibrations of the machine body.

Furthermore, by positioning the motor stay above the planting main frame and side frame and at the lower rear of the collection device, rainwater and muddy water from the field are less likely to get on the motor, thereby preventing motor failure.

In addition, a lifting arm and a lifting gear are provided to enable the rotor to move up and down, and a gear frame is provided to fix the lifting gear to the front side of the motor stay to transmit rotational force from the motor to the lifting gear. As a result, the soil leveling rotor can be raised and lowered by the power of the motor, improving work efficiency.

Furthermore, since the lifting arm is connected to the front end of the lifting gear, the upper end of the lifting arm can be positioned above the earth-grading rotor, so the earth-grading rotor can be raised and lowered in a stable posture. .

In addition, since it can be raised and lowered in a stable posture, it is difficult to put a load on the motor and the support members that make up the soil leveling rotor.

In addition, when the grading rotor is pushed up due to unevenness in the field, even if the uplifting load or overload acts on the grading arm, it will rotate clockwise around the rotation center and the grading arm will The elongated hole also rotates in the same way, and the slide pin installed on the side of the elevating gear relatively slides inside the elongated hole toward the upper end of the elongated hole, so the above load on the elevating gear side is reduced. and overload transmission is reduced.

Furthermore, when the soil leveling rotor is pushed up due to unevenness in the field, the thrust load and overload can be released through the ground leveling arm, ensuring the durability of the ground leveling rotor, lifting gear, etc.

A side view of a riding rice transplanter according to an embodiment of the present invention Plan view of the eight-row riding rice transplanter shown in FIG. An enlarged side view of the rear part of the riding rice transplanter of this embodiment shown in FIG. (a): Bottom view of part of the seedling tray in the riding rice transplanter of this embodiment, (b): Side view of part of the seedling tray seen from the short side side A schematic side view showing the state of a seedling tray being transported along a transport path curved in a substantially U-shape when viewed from the side in the riding rice transplanter of the present embodiment. FIG. 1 is a perspective view of a recovery device in a riding rice transplanter according to an embodiment of the present invention, seen from the left rear. (a): A schematic plan view showing a state in which the left rail member disposed on the left side of the collecting 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 disposed on the left side of the collection device is in a posture in which it cannot support the seedling tray (this posture is referred to as a second posture in the present specification), ( c): A cross-sectional view along the line CC line taken along the line CC shown in FIG. 7(b), (d): A cross-sectional view taken along the line DD along the line CC shown in FIG. 7(b). , (e): Cross-sectional view along the E-E line along the E-E line shown in FIG. 7(a) A perspective view of the left rail guide member of the pair of left and right rail guide members arranged in the riding rice transplanter of this embodiment, as seen from the left rear side. A schematic partial enlarged rear view of the left rail member rear support stay placed on the left side of the recovery device in the riding rice transplanter of this embodiment, viewed from the rear to the front. A schematic plan view showing a state in which a pair of left and right rail members in a recovery device for a riding rice transplanter according to the present embodiment are in a first posture. A partially enlarged view showing another configuration example in which the pair of left and right rail guide members in the riding rice transplanter of the present embodiment is fixed at an angle of a predetermined angle θ with respect to the longitudinal direction of the pair of left and right rail members. (a): A schematic plan view of the left first hopper lid for explaining a first configuration example of the upper surface of the hopper lid of the fertilizer application device; (b): A schematic side view of the left first hopper lid shown in FIG. 12(a); (c): A 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): A schematic side view of the left second hopper lid shown in FIG. 12(c). (a): A schematic plan view of the left third hopper lid for explaining the third configuration example of the upper surface of the hopper lid of the fertilizer application device, (b): A schematic plan view of the left third hopper lid shown in FIG. 13(a). Schematic side view, (c): Schematic plan view of the right third hopper lid for explaining the third configuration example, (d): Schematic side view of the right third hopper lid shown in FIG. 13(c). A schematic partially enlarged side view of the lower part of the planting device and its surroundings for explaining the mounting configuration of the rotor stay that holds the frame of the soil leveling rotor in the riding rice transplanter of this embodiment. A schematic partially enlarged side view of the lower part of the planting device and its surroundings for explaining the mounting configuration of the motor stay to which the motor for raising and lowering the soil leveling rotor is attached in the riding rice transplanter of this embodiment. (a): Partially enlarged schematic side view of the soil leveling rotor for explaining the connection structure between the vertical gear and the vertical arm in the riding rice transplanter of the present embodiment, (b): The structure provided between the soil leveling arm and the center rotor. Partially enlarged schematic side view of the grading rotor to explain the pulled up spring A plan view showing a support member for the soil leveling rotor in the riding rice transplanter of this embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, a riding rice transplanter for eight-row planting according to an embodiment of the seedling transplanter of the present invention will be described with reference to the drawings.

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

Figure 2 is a plan view of the riding rice transplanter of this embodiment shown in Figure 1.

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

As shown in FIG. 1, in the riding rice transplanter 1 of the present embodiment, a planting device 200 is attached to the rear side of the traveling vehicle body 2 so as to be movable up and down via an 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 riding rice transplanter 1 is a four-wheel drive seedling transplanter equipped with a pair of left and right front wheels 3 and a pair of left and right rear wheels 4 on the running body 2.

Further, the engine 5 is mounted on the main frame 6, and the rotational power of the engine 5 is transmitted to an auxiliary transmission mechanism (not shown) in the transmission case 7 via an HST (hydrostatic continuously variable transmission) or the like. etc. will be transmitted. The rotational power changed in speed within the transmission case 7 is configured to be output separately into running power used for the running system and the like and external power taken out for use in the planting device 200 and the like.

A portion of the running 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. Further, a portion of the rotational power transmitted to the left rear wheel gear case 9L is transmitted to the earth leveling rotor drive shaft 101 to rotate the earth leveling rotor 100 (see FIG. 3).

The top of the engine 5 is covered by an engine cover 13, and a cockpit 10 is installed on top of the engine cover 13. A steering handle 11 for steering the front wheels 3 is provided in front of the cockpit 10, and the front side of the steering handle 11 is covered by a front cover 12. 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, making it easy to carry out operations such as supplying seedling trays and fertilizer.

Further, on both left and right sides of the steering handle 11 and the front cover 12, a replenishing seedling tray 15 for loading a large number of seedling trays 50 is arranged. This configuration allows the worker to sequentially replenish the seedling trays 50 by carrying them to the starting end (upstream side) of the conveyance path 201 of the planting device 200 connected to the rear while taking out the seedling trays 50 during the planting work. It is.

The transport path 201 is configured to sequentially transport one seedling tray 50 per two planting rows, and supply potted seedlings to each seedling planting section 220 (described later) to plant the two rows. Therefore, in the riding rice transplanter 1 for eight-row planting, in order to realize multi-row planting, the conveyance path 201, the seedling planting section 220, etc. are provided four each in the left and right width directions in plan view (Fig. 2 reference).

That is, the above-mentioned planting device 200 includes (1) a seedling tray conveying device 210 that conveys the seedling trays 50 that are sequentially supplied from the upstream side of the conveying path 201 toward the downstream side, and (2) the seedling tray conveying device 210 that conveys the seedling trays 50 that are sequentially supplied. A seedling planting section 220 is provided on the way and takes out potted seedlings from the conveyed seedling tray 50 and plants them in the field; and (3) a seedling planting section 220 takes out potted seedlings and sends them out from the end of the conveyance path. A collection device 300 that sequentially collects the empty seedling trays 50 that are received is provided for each of the two planting rows.

Here, the configuration of the seedling tray 50 will be explained mainly using FIGS. 4(a) and 4(b).

Figure 4(a) is a bottom view of a portion of the seedling tray 50, and Figure 4(b) is a side view of a portion of the seedling tray 50 viewed from the short side.

That is, as shown in Fig. 4(a) and Fig. 4(b), the seedling tray 50 is a flexible plate-like member made of synthetic resin that is rectangular in plan view and is formed by arranging a large number of seedling pots 51 vertically and horizontally, and can be curved into an approximately U-shape in side view on the transport path (see Fig. 5). Fig. 5 is a schematic side view showing the state of the seedling tray 50 being transported along the transport path 201 that is curved into an approximately U-shape in side view.

The seedling raising pot 51 has a circular opening 51a on the back side in FIG. 4(a) and a bottom portion 51b protruding from the front side in FIG. 4(a), and the pot seedlings are raised inside. It is a pot-shaped member having a space for storage (see FIG. 4(b)). A push-out pin (not shown) provided in the seedling planting section 220 for pushing out the potted seedlings in the seedling-growing 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 planting operation is performed by supplying the seedling tray 50 in which the potted seedlings have been grown in the seedling raising pot 51 to the conveyance path 201 of the planting device 200.

Further, as shown in FIG. 4(a), the longitudinal direction of the seedling tray 50 corresponds to the conveyance direction (see arrow A in FIG. 4(a)), and the left and right edges of the width of the seedling tray 50 in the width direction Substantially square feed holes 52 are formed at regular intervals 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 portion 52 and moves up and down at a predetermined timing (see arrow B in FIG. 5), thereby conveying the seedling tray 50. This is performed intermittently for each row of each seedling growing pot 51.

The seedling planting section 220 described above has push-out pins (not shown) for simultaneously inserting each of the seedling pots 51 in a horizontal row of the seedling tray 50 from the bottom 51b side to remove the pot seedlings, and a seedling transport belt (not shown) for transporting the right half of the pot seedlings in a horizontal row pushed out by the push-out pins to the right and the left half of the pot seedlings to the left. The planting claws 221, which are rotatably arranged below on both the left and right sides of the seedling transport belt, rotate to plant each of the pot seedlings transported to the left and right sides by the seedling transport belt in the field in sequence.

Floats 230 are provided below each seedling planting section 220 (see Figure 2). These floats 230 slide across the muddy surface while leveling it, and seedlings are planted in the leveled area by the planting claws 221.

Further, the above-mentioned collection device 300 is arranged below the conveyance path 201a on the upstream side of the seedling tray conveyance device 210 (see FIGS. 1 and 3), and is sent out from the terminal end of the conveyance path 210b on the downstream side. The empty seedling tray 50 is sequentially collected (see FIG. 5). The recovery device 300 will be further described later.

Here, the configuration of the downstream conveyance path 201b will be described using FIG. 5.

That is, as shown in FIG. 5, the downstream conveying path 201b is equipped with conveying support bars 212 arranged at three locations, one at the center of the left-right width of the seedling tray 50 and one near each of the left and right sides, which support the conveyed seedling tray 50 by contacting its surface on the opening 51a side, and a conveying guide bar 213 arranged so that it can be inserted into a guide bar insertion space 54 (see FIG. 4(a) and FIG. 4(b)) provided along the length at the center of the left-right width of the surface on the bottom 51b side of the seedling tray 50.

The conveyance support bar 212 and the conveyance guide bar 213 are arranged at a predetermined interval when viewed from the side, and are arranged toward the recovery device 300 side in order to guide the seedling tray 50 toward the recovery device 300 side. The front side is curved diagonally upward. Furthermore, the terminal end 212b of the transport support bar 212 is fixed to a predetermined stay (not shown) whose one end is fixed to the lower part of the transport path 201a on the upstream side, and the terminal end 213b of the transport guide bar 213 is fixed to the lower part of the transport path 201a on the upstream side. It is fixed to a conveyance guide bar support stay 214 (see FIG. 5) whose one end side is fixed to the side conveyance path 201a.

Note that the traveling vehicle body 2 of this embodiment corresponds to an example of the traveling vehicle body of the present invention. Moreover, the seedling tray 50 of this embodiment corresponds to an example of the seedling tray of the present invention. Furthermore, the planting device 200 of the present embodiment is an example of the planting device of the present invention, and the seedling tray conveying device 210 of the present embodiment is an example of the seedling tray conveying device of the present invention. Further, the seedling planting section 220 of this embodiment corresponds to an example of the seedling planting section of the present invention, and the collection device 300 of this embodiment corresponds to an example of the collection device of the present invention.

Next, the configuration and operation of the collection device 300 located at the rear end of the downstream transport path 201b will be further explained mainly with reference to Figures 5 to 10.

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

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

In this 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 is in the second posture in which it cannot support the seedling tray 50, the right rail member 330R is also in the second posture in which it cannot support the seedling tray 50.

Further, FIG. 7(c) is a cross-sectional view taken along line CC shown in FIG. 7(b), and FIG. 7(d) is a cross-sectional view along line D--C shown in FIG. 7(e) is a cross-sectional view taken along the line EE shown in FIG. 7(a). FIG. Note that in FIGS. 7(a) to 7(e), the pair of left and right rail guide members 310L and 310R are indicated by two-dot chain lines.

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

Moreover, FIG. 9 is a schematic partial enlarged rear view of the left rail member rear support stay 342L disposed on the left side of the recovery device 300, viewed from the rear to the front. In FIG. 9, the left rail member 330L is in the first attitude and the left rail guide member 310L is in the retracted attitude (shown by a solid line), and the left rail member 330L is in the second attitude and the left rail guide member 310L is in the retracted attitude. is in a non-retracted position (indicated by a two-dot chain line).

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

In this 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 in the retracted position. When the right rail guide member 310R is in the retracted position, the right rail guide member 310R is also in the non-retracted position.

In addition, in this specification, when the left and right pair of rail guide members 310L, 310R are in the retracted position, it means that the left and right pair of rail guide members 310L, 310R are at both left and right ends of the seedling tray 50 or in the vicinity thereof. It means that the pair of left and right rail guide members 310L and 310R are in a non-retracted position. This means that 310L and 310R are in a position where they are present within the movement path such as the left and right ends of the seedling tray 50 and the bottom portion 51b in the vicinity thereof.

The recovery device 300, as shown in FIGS. 5 and 6,
(1) A large number of conical projections 321 are arranged on the surface of the cylindrical roller member to engage with the opening 51a of the seedling tray 50 sent out from the terminal end 212b of the conveyance support bar 212 of the downstream conveyance path 201b. , is rotatably arranged on the rear end side of the collection device 300 to transport the empty seedling tray 50 to the collection device 300 side by being intermittently rotated in synchronization with the timing of the vertical movement of the feed claw 211. a conveyance roller 320,
(2) The long side ends 53a along the left and right long sides 53L and 53R of the seedling tray 50 sent out from the conveyance roller 320 are supported and guided forward (corresponding to the first posture), and the guided seedling tray 50 is A pair of left and right rail members 330L each having a long plate shape with a substantially L-shaped cross section in the direction perpendicular to the longitudinal direction and configured to be able to drop the seedling tray 50 at a predetermined timing (corresponding to the second posture). , 330R (see FIGS. 7(a) to 7(e)), and
(3) A member welded and fixed at the rear ends of the pair of left and right rail members 330L, 330R so as to protrude rearward, and is transported to the vicinity of the terminal end 212b of the transport support bar 212 on the downstream transport path 201b. When the bottom portions 51b of the left and right ends of the front end side of the seedling tray 50 come into contact with the member, the member starts rotating and shifts from the non-retracted position to the retracted position, and the pair of left and right rail members 330L, 330R is switched to the first posture that can support the seedling tray 50, and the vicinity of the long side edges 53b on both the left and right ends of the seedling tray 50, the bottom portion 51b, etc. no longer come into contact with the member, so that the member is rotated as described above. A pair of left and right rail guides that can rotate in the opposite direction to the movement and shift from a retracted position to a non-retracted position and switch the pair of left and right rail members 330L and 330R to a second position in which the seedling tray 50 cannot be supported. Members 310L and 310R,
(4) A seedling tray holder to prevent the seedling tray 50 from shifting in the left-right direction and falling off the rail members 330L, 330R while being transported on the pair of left and right rail members 330L, 330R. A rod 301 and
(5) a pair of left and right rail member front side support stays 341L, 341R that rotatably support the front side of both longitudinal ends of the long plate shape of the left and right pair of rail members 330L, 330R;
(6) a pair of left and right rail member rear side support stays 342L, 342R that rotatably support the rear sides of both longitudinal ends of the long plate shape of the left and right pair of rail members 330L, 330R;
(7) A seedling tray storage basket 350 mainly formed of a wire rod or the like having a circular cross section is provided, which receives and stores the seedling tray 50 falling from the pair of left and right rail members 330L and 330R.

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

Each of the pair of left and right rail members 330L, 330R has a cross section that is roughly L-shaped as shown in Figure 7 (c), and the portion corresponding to the short side of the L shape is the first rail portion 332a (see Figure 7 (a)) that can support from below the long side end portion 53a (see Figure 4 (b)) on the bottom side of both the left and right ends of the seedling tray 50, and the portion corresponding to the long side of the L shape is the second rail portion 332b that is bent at a right angle to the first rail portion 332a.

In addition, the front end edges of the seedling tray 50 on both left and right sides come into contact with the front ends of the left and right pair of rail members 330L and 330R, so that the seedling tray 50 can be moved to the front ends of the left and right pair of rail members 330L and 330R. A wall-shaped stopper 332c for the seedling tray is provided which is perpendicular to the first rail part 332a and the second rail part 332b to prevent the seedling tray from jumping out forward. Moreover, the corner portion 332c1 of the seedling tray stopper 332c is cut out diagonally (see FIG. 7(c)). As a result, the pair of left and right rail members 330L and 330R take the second posture (see FIG. 9), and even when a plurality of seedling trays 50 accommodated in the seedling tray storage basket 350 are taken out at the same time, the seedling trays 50 The seedling tray can be taken out smoothly without interfering with the corner portion 332c1 of the stopper 332c for the seedling tray in the pair of left and right rail members 330L and 330R.

Further, the front end portions 332b1 of the second rail portions 332b of the pair of left and right rail members 330L and 330R are arranged such that the height of the rise from the surface of the first rail portion 332a is lowered, as shown in FIG. 7(b). It's cut out. As a result, the pair of left and right rail members 330L and 330R take the second attitude, and even when a plurality of seedling trays 50 accommodated in the seedling tray storage basket 350 are taken out at the same time, the seedling tray 50 is placed in the 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.

Moreover, a rod-shaped member 333 having a circular cross section is fixed to both the front and rear ends of the pair of left and right rail members 330L and 330R for rotatably supporting the pair of left and right rail members 330L and 330R. has been done. That is, a part of the long side surface of the rod-shaped member fixing plate 333a bent into a substantially L-shape is welded and fixed to the back surface of both ends of the first rail portion 332a of the left and right pair of rail members 330L and 330R. Moreover, the rod-shaped member 333 is welded and fixed to the short side edge of the rod-shaped member fixing plate 333a so as to protrude forward or backward, and the rod-shaped member 333 is attached to the second rail portion. 332b by a predetermined dimension.

As a result, the rotational fulcrums of the pair of left and right rail members 330L and 330R are separated from the plane of the first rail portion 332a by a certain distance, and are also separated from the second rail portion 332b by a predetermined distance, so that the rotational The radius becomes larger and the pair of left and right rail members 330L and 330R take the second posture, so that even when taking out a plurality of seedling trays 50 housed in the seedling tray storage basket 350 at the same time, the seedling tray 50 is The seedling tray can be taken out smoothly without interfering with the seedling tray stopper 332c provided at the front end of the rail members 330L and 330R to prevent the seedlings from popping out.

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

Since the above-mentioned pair of left and right rail guide members 310L and 310R have a symmetrical shape, the left rail guide member 310L will be further explained with reference mainly to FIGS. 7(a) to 8. Note that the right rail guide member 310R has the same configuration as the left rail guide member 310L, so a description thereof will be omitted.

That is, as shown in FIG. 8, the left rail guide member 310L includes (1) a substantially rectangular rail guide base 311, and (2) a substantially rectangular rail guide base 311 that extends approximately from one end 311a of both ends of the rail guide base 311 in the longitudinal direction. The left rail guide member 310L is bent at right angles from the left end 311b of the rail guide base 311 to the rail guide base 311, and the left rail guide member 310L is bent at right angles from the left end 311b of the rail guide base 311. (3) a substantially rectangular rail guide fixing part 312 for fixing to the rear end of the rail part 332b; and (4) a substantially rectangular first rail guide portion 313 bent from the upper end 313c of the first rail guide portion 313 at a right angle toward the center position of the fuselage. It is a plate-like member composed of a second rail guide portion 314 having a rectangular shape. Further, as shown in FIG. 8, one of the longitudinal ends of the first rail guide part 313 is one end 313a, the other is the other end 313b, and both longitudinal ends of the second rail guide part 314 are When one of the sections is one end 314a and the other is the other end 314b, the other end 311d of both longitudinal ends of the rail guide base 311 and the other end 313b of the first rail guide section 313. , and the other end 314b of the second rail guide section 314 are located in the same plane, and the length from the other end 313b of the first rail guide section 313 to the one end 313a is based on that plane. , is shorter than the length from the other end 311d to the one end 311a of the rail guide base 311, and the length from the other end 314b to the one end 314a of the second rail guide part 314 is shorter than the length from the other end 311d of the rail guide base 311 to the one end 314a. The left rail guide member 310L is formed to be shorter than the length from the other end 313b to the one end 313a.

That is, when the left and right pair of rail guide members 310L, 310R are in the second posture, in other words, when the left and right pair of rail guide members 310L, 310R are in the non-retracted posture, The bottom portions 51b at both left and right ends of the seedling tray 50 that has been transported to the vicinity of the terminal end 212b of the transport support bar 212 on the downstream transport path 201b are connected to the side edges 314c along the longitudinal direction of the second rail guide section 314. (See FIG. 5, the side edge portion 314c shown by the two-dot chain line in FIG. 9, etc.).

The pair of left and right rail guide members 310L, 310R are configured so that when the bottoms 51b at both the left and right ends of the transported seedling tray 50 come into contact with the side edges 314c of the second rail guide part 314, the pair of left and right rail guide members 310L, 310R start to rotate counterclockwise (see arrow F in Figure 9) when viewed from the rear, with the rod-shaped member 333 as the rotation axis, and transition from the non-retracted position to the retracted position.

In addition, the pair of left and right rail members 330L, 330R rotate around the rod-shaped member 333 as the axis of rotation in conjunction with the movement of the pair of left and right rail guide members 310L, 310R from the non-retracted position to the retracted position. Rotation is started from the second posture (see arrow F indicating counterclockwise rotation in FIG. 9), and the long side ends 53a of both 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 be able to switch to the first form that can be supported from the side. After that, the bottom portions 51b on both the left and right sides of the seedling pot 51 that is continuously transported continue to contact the second rail guide portions 314, etc. of the pair of left and right rail guide members 310L and 310R, so that the pair of left and right rail members 330L , 330R maintain the first attitude. Maintenance of the first posture will be further described later.

In addition, a rotation stopper 332b2 (see Figures 7(a), 7(b), and 9) is formed to protrude rearward from the rear end of the second rail portion 332b of the pair of left and right rail members 330L and 330R.

As a result, when the pair of left and right rail members 330L, 330R switch from the second position to the first position, the rotation stopper 332b2 abuts against the inside of the pair of left and right rail member rear support stays 342L, 342R, i.e., the upper end of the rear support stay edge portion 342a (see Figure 9) on the side where the seedling tray 50 is located, thereby preventing the pair of left and right rail members 330L, 330R from rotating too far.

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

As a result, even if both the right and left ends of the front end side of the seedling tray 50 are damaged, the front end side of the seedling tray 50 that has been transported to the vicinity of the terminal end 212b of the transport support bar 212 on the downstream transport path 201b. The bottom portions 51b at both left and right ends abut against the side edges 314c of the second rail guide portions 314 of the pair of left and right rail guide members 310L and 310R, thereby ensuring that the pair of left and right rail members 330L and 330R are in the second posture. can be switched to the first posture.

As described above, when the pair of left and right rail members 330L, 330R maintain the first position, as the seedling tray 50 is pushed forward by the rotation of the transport roller 320, the long side end portions 53a on both the left and right sides of the seedling tray 50 are supported from below by the pair of left and right first rail portions 332a and are also supported from both the left and right sides by the pair of left and right second rail portions 332b. As a result, the seedling tray 50 slides forward on the pair of left and right first rail portions 332a, and eventually the front end portion of the seedling tray 50 (see reference numeral 50F1 in FIG. 10) advances to a position a predetermined distance W away from the seedling tray stopper 332c, and the rail guide second portion 314 reaches the rear end of the seedling tray 50. 9 )を突っ伏して号组330L、330R的左端端（参照番号 50B1， 50B2）的底部51b野的构件51的底部51b野。 English: The left and right rail members 330L, 330R advance to a position where they no longer come into contact with the bottoms 51b of the seedling pots 51 at both left and right ends of the left and right rail members 330L, 330R (see arrow 50B1 in FIG. 10). However, even after the seedling tray 50 passes that position and slides further forward, the rail guide first portion 313 is configured to abut against the side of the seedling pot 51 of the seedling tray 50 until the front end of the seedling tray 50 (see arrow 50F2 in FIG. 10) reaches a position just adjacent to the seedling tray stopper 332c (see the rail guide first portion 313 shown by the solid line in FIG. 9 ). This prevents the left and right rail members 330L, 330R from rotating downward (see arrow G in FIG. 9 ). This allows the left and right rail members 330L, 330R to maintain the first position. In addition, in FIG. 10, the line indicated by the two-dot chain line with the reference symbol 50B2 indicates the position of the rear end of the seedling tray 50 when the front end of the seedling tray 50 (see reference symbol 50F2 in FIG. 10) reaches a position immediately adjacent to the seedling tray stopper 332c.

As a result, as shown in FIG. 10, the seedling tray 50 is held between the pair of left and right rail members until the front end of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) reaches the position nearest to the seedling tray stopper 332c. Since 330L and 330R maintain the first posture, they do not fall to the side of the seedling tray storage basket 350, but the front end of the seedling tray 50 (see reference numeral 50F2 in FIG. 10) is at the position closest to the seedling tray stopper 332c. When it reaches , the first rail guide part 313 no longer comes into contact with the side surface of the seedling growing pot 51 of the seedling tray 50, thereby preventing the pair of left and right rail members 330L and 330R from rotating downward (see arrow G in FIG. 9). Therefore, the pair of left and right rail members 330L, 330R cannot maintain the first posture, and due to the action of the weight of the seedling tray 50 and the weight of the pair of left and right rail members 330L, 330R, the pair of left and right rail members 330L, 330R rotate around the rod-shaped member 333. , rotates downward (see arrow G indicating clockwise in FIG. 9), and shifts from the first attitude to the second attitude. As a result, the seedling tray 50 falls to the side of the seedling tray storage basket 350 while maintaining its posture due to its own weight.

As a result, the empty seedling trays 50 that have been transported to the front ends of the pair of left and right rail members 330L and 330R start falling almost simultaneously from the front end to the rear end in that position, and the seedling trays They are neatly arranged vertically in the storage basket 350.

That is, with the above configuration, the front end of the seedling tray 50 is less likely to hang down than in the conventional case, and the seedling tray 50 already accommodated in the seedling tray storage basket 350 is not easily pushed forward, so that the seedling tray 50 is not easily pushed out from the seedling tray storage basket 350. Falling of the seedling tray 50 can be suppressed.

In addition, since the seedling trays 50 already accommodated in the seedling tray storage basket 350 are not easily pushed forward, after the seedling trays 50 are taken out from the seedling tray storage basket 350, the seedling trays 50 are stacked in a mutually shifted state. There is no need to adjust the misalignment and rearrange them neatly.

In addition, the above-mentioned seedling tray presser rod 301 has a front part 301a in a raised front state, a rear part 301b in a rear raised state, and a pair of left and right rails between the front part 301a and the rear part 301b in a side view. When the members 330L and 330R are in the first posture, the central portion 301c that is parallel to the plane of the first rail portion 332a is in communication with each other (see FIG. 6). When the pair of left and right rail members 330L and 330R are in the first posture, the central portion 301c serves as a guide for the seedling tray 50 when the seedling tray 50 slides forward on the upper surface of the first rail portion 332a. It is configured to be inserted into a bar insertion space 54 (see FIGS. 4(a) and 4(b)).

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

Further, in this 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 can be rotated integrally. With this simple structure, the seedling tray 50 being conveyed comes into contact with the pair of left and right rail guide members 310L, 310R, and reliably rotates the pair of left and right rail members 330L, 330R, thereby achieving the first posture. It is possible to switch the second posture.

For example, one possible configuration for rotating the rail member would be one in which the center of the seedling tray in the left-right width direction comes into contact with a specific link member, causing a link mechanism made up of multiple arm members etc. connected to the link member to work in a complex interlocking manner to rotate the rail member; however, such a configuration would require a large number of parts and a complex structure, which would increase costs.

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.

Note that the bottom portions 51b at both ends of the seedling tray 50 of the present embodiment correspond to an example of predetermined portions on both left and right sides of the seedling tray of the present invention.

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

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

The seedling tray storage basket 350 is
(1) A round bar member for fixing the seedling tray storage basket 350 to the left and right pair of rail member front support stays 341L, 341R and the left and right pair of rail member rear support stays 342L, 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, 341R, and the rear end of the both ends is fixed to the left and right rail member front support stays 341L, 341R below the front through hole 341a. A pair of left and right storage cage fixing bars 351L, 351R welded and fixed below the rear side through hole 342b in the member rear side 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 falling seedling tray 50;
(4) Seedling tray 50A located in the accommodation position, 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, When the worker pulls the seedling tray forward, the seedling tray 50A is placed in a raised position (this is called a collection position) compared to the position of the seedling tray 50A located at the storage position (this is called a storage position) (this is called a collection position) (in the take-out position shown in FIG. 6). (See the seedling tray 50B located thereon).

In addition, a hose fixing part 360 for fixing a fertilizing hose is attached to the center position in the left-right width direction of the first support base 352A1 of the rear end support member 352 so as to protrude rearward and diagonally downward. . A frame member 361 having a substantially rectangular shape in rear view is attached to the rear end of the hose fixing portion 360 for holding the fertilizing hose. Note that the first support base 352A1 will be further described later.

Further, the rear end support member 352 is
(1) When viewed from the back, the rear end first support forms a substantially U-shape, and the upper portions of both ends of the U-shape are welded and fixed to the lower surfaces of the rear portions of the pair of left and right storage cage fixing bars 351L, 351R. Member 352A,
(2) In the bending portion bent at a substantially right angle at the bottom of both ends of the U-shape of the rear end first support member 352A, the pair of left and right front end portions 352La, 352Ra are inside the bending portion and the seedling tray 50 A pair of left and right second support bases 352L1 and 352R1 are welded and fixed at intervals smaller than the left and right width of the left and right support bases 352L1 and 352R1, and extend rearward by a predetermined distance parallel to each other. Furthermore, it is comprised of a pair of left and right rear end second support members 352L and 352R whose front ends bent at a substantially right angle rearward are fixed to the lower part of the upstream conveyance path 201a.

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

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

In addition, the first support base 352A1 between the bent portions bent at a substantially right angle at the lower portions of both ends of the U-shape of the rear end first support member 352A, and the pair of left and right rear end second support members 352L and 352R. Among them, a pair of left and right second support bases 352L1 and 352R1 extending rearward by a predetermined dimension parallel to each other from the first support base 352A1 supports the rear end side of the seedling tray 50A located in the storage position from below. .

In addition, the front end support member 353 is generally U-shaped when viewed from behind, and both upper ends of the U-shape are welded to the undersides of the front parts of the pair of left and right storage cage fixing bars 351L, 351R.

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

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

As shown in FIG. 6, the front-rising support member 354 is substantially L-shaped in side view, and is composed of a front-rising first support base 354A corresponding to the long side of the L shape and a front-rising second support base 354B corresponding to the short side of the L shape, and the connection between the front-rising first support base 354A and the front-rising second support base 354B is bent at a substantially right angle. The front end of the front-rising first support base 354A is welded and fixed to the center position of the left-right width of the front end support base 353a so that the front-rising first support base 354A is in a front-rising position (recovery position) in side view, and the rear end of the front-rising second support base 354B is welded and fixed to the center position of the left-right width of the first support base 352A1 so that the front-rising second support base 354B is in a rear-rising position in side view.

As a result, when the operator pulls out the seedling tray 50A located in the storage position forward (see arrow H in FIG. 6), the seedling tray 50A is separated into the front end support base 353a and the forward-sloping first support base 354A. Since the support situation changes so that the seedling tray 50A is supported by the second support base 354B that is raised forward, the attitude of the seedling tray 50A is changed to the raised front position compared to the position of the seedling tray 50A located at the storage position, and it is also possible to move the seedling tray 50A to the take-out position. I can do it. In this way, the front end of the seedling tray 50B located at the take-out position can be moved upward, so that when the riding rice transplanter 1 is working on planting in the field (at this time, the position of the planting device 200 is lowered). ), it becomes easier to take out a plurality of stacked seedling trays 50 from the seedling tray storage basket 350 all at once.

Further, as described above, the front end portions 332b1 of the second rail portions 332b of the pair of left and right rail members 330L and 330R are cut out so that the height of the rise from the surface of the first rail portion 332a is reduced. (See FIG. 7(b)), even when taking out a plurality of seedling trays 50 stacked together from the seedling tray storage basket 350, the seedling trays 50 are placed on the front side of the second rail portion 332b of the pair of left and right rail members 330L, 330R. It can be taken out smoothly without interfering with the

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

Further, since the front part 301a of the seedling tray presser bar 301 is in the upwardly raised state (see FIG. 6), even when a plurality of stacked seedling trays 50 are taken out from the seedling tray storage basket 350 at once, the seedling tray 50 does not hold the seedlings. The tray can be taken out smoothly without interfering with the tray presser bar 301.

In addition, the innermost side of the left and right pair of rail member front support stays 341L, 341R, that is, the front support stay end edge 341b (see FIG. 9) on the side where the seedling tray 50 is present, is used to hold a plurality of stacked seedling trays 50 in the seedling tray. Even when taking out the seedling trays 50 all at once from the storage basket 350, the seedling trays 50 can be taken out smoothly because they are formed so as not to interfere with the front support stay edge 341b.

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

Next, first to fourth configuration examples of the configuration of the upper surface of the hopper lid of the hopper 40 of the fertilization device provided at the upper rear portion of the traveling vehicle body 2 will be described using FIGS. 12 to 13.

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 surface of each of the left and right pair of first hopper lids 400L and right first hopper lids 400R. This is an example (see FIGS. 12(a) and 12(b)).

In the first configuration example, a plurality of first ribs 401 are arranged at a pitch that can support the bottom portion 51b of the seedling growing 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 schematic plan view of the left first hopper lid 400L shown in FIG. 12(a). FIG.

In a riding rice transplanter 1 that removes pot seedlings from the seedling trays 50 and plants them in a field, when an operator retrieves empty seedling trays 50 stored in the seedling tray storage basket 350, the operator often uses the top surface of the hopper lid to organize the seedling trays 50, and compared to other types of riding rice transplanters, the top surface of the hopper lid is more likely to be scratched. However, in the pair of left and right first hopper lids 400L, 400R of the first configuration example described above, the provision of the first rib 401 reduces contact with the top surface of the hopper lid, making it possible to maintain the appearance performance (appearance).

Furthermore, by providing the first rib 401, even when the upper surface of the hopper lid is used to organize the seedling trays 50, the deflection of the hopper lid can be reduced, and the worker can collect the empty seedling trays 50. The workability of the machine can be improved.

Next, the second configuration example is an example in which a plurality of second ribs 411 are provided on the upper surface of each of the pair of left and right second hopper lids 410L and 410R in a direction perpendicular to the traveling direction of the riding rice transplanter 1 (see Figures 12(a) and 12(b)).

In the second configuration example, the second ribs 411 are arranged at a pitch that allows the ribs to be inserted between the seedling growing pots 51 of the seedling tray 50.

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

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

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, contact with the top 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, even when organizing the seedling trays 50 using the top surface of the hopper lid, as in the case of the first configuration example, it is possible to reduce the deflection of the hopper lid, and the work It is possible to improve the work efficiency of the operator in collecting the empty seedling trays 50.

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

Next, in the third configuration example, the size of the seedling growing pot 51 of the empty seedling tray 50 protruding from the upper surface of each of the left and right third hopper lids 420L and 420R of the left and right pair is sized to accommodate the seedling growing pots 51 of the empty seedling trays 50. This is an example in which a first enclosing member 421, which is a substantially rectangular frame in plan view, is provided (see FIGS. 13(a) to 13(d)). The tip of the portion of the first enclosing member 421 that protrudes to a predetermined height is located at the long side end portion 53a (FIG. 4(a), FIG. b)) etc.).

Furthermore, in the third configuration example, the first enclosing member 421 is arranged on the upper surface of each of the pair of left and right third hopper lids 420L and right third hopper lid 420R, closer to the outside of the fuselage (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 schematic plan view of the left third hopper lid 420L shown in FIG. 13(a). FIG. Note that FIG. 13A also shows a fourth right hopper lid 430R of a fourth configuration example to be described later.

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

As a result, by providing the first enclosing member 421, when organizing the seedling trays 50 using the upper surface of the hopper lid, it is easy to fix the empty seedling trays 50, and the empty seedling trays 50 can be stacked. This makes the collection work easier.

Also in this configuration, the tip of the portion of the first enclosing member 421 that protrudes to a predetermined height supports the seedling tray 50, making it difficult for the upper surface of the hopper lid to be damaged.

In addition, the first enclosure member 421 is placed closer to the outside of the machine on the upper surfaces of the pair of left and right third hopper lids 420L and right third hopper lid 420R, making it easy to secure a work space. The seedling tray 50 can be collected on the outside of the machine body, and the worker's work can be facilitated because access to the replenishment seedling loading frame 15 is closer on the outside of the machine body.

Next, in the fourth configuration example, similarly to the third configuration example described above, empty seedlings are provided that protrude at a predetermined height from the upper surfaces of the left and right fourth hopper lids 430L and 430R, respectively. This is an example in which a second enclosing member 431 is provided, which is a substantially rectangular frame in plan view and has a size that accommodates the seedling growing pot 51 of the tray 50. The tip of the part of the second enclosing member 431 that protrudes to a predetermined height is located at the long side end 53a (FIG. 4(a), FIG. b)) etc.).

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 surface of each of the pair of left and right fourth hopper lids 430L and right fourth hopper lid 430R. (See FIGS. 13(a) and 13(c)).

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

Moreover, in the case of this structure as well, since the tip of the part of the second enclosing member 431 that protrudes to a predetermined height supports the seedling tray 50, the upper surface of the hopper lid is less likely to be damaged.

In addition, the second enclosure member 431 is arranged closer to the inside of the body on the upper surfaces of the left and right pairs of fourth hopper lids 430L and right fourth hopper lids 430R. Since access is almost uniform, the work of the operator is facilitated.

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

FIG. 14 (FIG. 17) is a schematic partially enlarged side view of the lower part of the planting device 200 and its surroundings for explaining the attachment configuration of the rotor stay 110 that holds the frame of the soil leveling rotor 100.

Next, the planting section frames (240a and 240b) will be explained. A planting main frame 240a supporting the planting device 200 and located at the center, and side frames 240b fixed to the left and right sides of the planting main frame 240a and extending in the left-right direction of the planting device 200 are provided.

Since the planting main frame 240a is the main part that supports the planting device 200, it is strongly constructed, and has a shape that is larger than the side frame 240b and protrudes toward the front of the body.

A portion (center portion) of the planting main frame 240a is shaped to be located above the soil leveling frame 100a (ground leveling rotor 100).

The side frame 240b is located higher and rearward on the aircraft than the ground leveling frame 100a (ground leveling rotor).

The ground leveling frame 100a that constitutes the ground leveling rotor 100 is positioned to extend in the left-right direction of the ground leveling rotor.

In the riding rice transplanter 1 of this embodiment, as shown in FIG. 3, the soil leveling stays (110a, 110b) are configured to face downward from the planting main frame 240a (side frame 240b).

Moreover, it is composed of a first soil leveling stay 110a supported from the planting main frame 240a and a second earth leveling stay 110b supported from the side frame 240b, and the first leveling stay 110b is located between the plurality of planting devices 200 in plan view of the aircraft. The stay 110a or the second earth leveling stay 110b is located.

When viewed from above, the first ground leveling stay 110a is located between two adjacent planting devices 200 in the center of the machine, and the second ground leveling stay 110b is located between two adjacent planting devices 200 on the outside of the machine.

When viewed from the front or rear of the machine, the first leveling stay 110a is located between two adjacent removal devices 201c in the center of the machine, and when viewed from the front or rear of the machine, the second leveling stay 110b is located between two adjacent removal devices 201c on the outside of the machine.

The first earth leveling stay supports the central portion of the earth leveling rotor 100 (behind the center rotor 120) with two members.

The second ground leveling stays 110b are provided on both the left and right sides of the machine body, between the leftmost planting device 200 and the adjacent planting device 200, and between the rightmost planting device 200 and the adjacent planting device 200, and are composed of two members.

Further, the first earth leveling stay 110a is in an attitude toward the lower part of the aircraft body, and the second earth leveling stay 110b is in an attitude towards the lower front side of the aircraft body.

As a result, since the rotor is suspended by building leveling stays on the side frames 240b that overhang left and right from the planting section suspension base (planting main frame 240a), the rotor shaft may be damaged due to lack of rigidity, and the structure is disadvantageous in ensuring rigidity. Compared to the conventional structure, which was heavier due to this, it has a simpler structure, achieving both weight reduction and improved rigidity.

Next, the mounting configuration of the motor stay 510 to which the motor 500 for raising and lowering the soil leveling rotor 100 is attached in the riding rice transplanter 1 will be described using FIG. 14.

Moreover, the first earth leveling stay 110a and the second earth leveling stay 110b are located between the plurality of seedling retrieving devices 201c when viewed from the rear.

A second soil leveling stay 110b is provided between the seedling retrieval device 201c on the outside of the machine body and the adjacent seedling retrieval device 201c, and a second soil leveling stay 110b is provided between the seedling retrieval device 201c on the inside of the machine body and the adjacent seedling retrieval device 201c. A ground leveling stay 110a is provided.

FIG. 15 (FIG. 3) is a schematic partially enlarged side view of the lower part of the planting device 200 and its surroundings for explaining the installation configuration of the motor stay 510 to which the motor 500 that raises and lowers the soil leveling rotor 100 is attached.

In the riding rice transplanter 1 of this embodiment, as shown in FIG. 15 (FIG. 3), the motor stay 510 is provided with a planting main frame 240a and a side frame 240b in front of the seedling tray transport device 210, similar to the above-mentioned ground leveling stay, and the motor stay 510 is attached to support the motor 500 that is connected to the planting main frame 240a and enables the ground leveling device to be raised and lowered.

The motor stay 510 is configured to be located above the planting main frame 240a and the side frame 240b and below the rear of the collection device 300.

Therefore, the motor 500 is less likely to be exposed to muddy water, rainwater, etc. from the field, which leads to prevention of failure.

As a result, compared to the conventional configuration in which the leveling rotor was manually raised and lowered, resulting in an increase in the number of parts and weight, by consolidating the attachment of the components of the leveling rotor to the planting main frame 240a, it is possible to simultaneously achieve significant weight reduction, a reduction in the number of parts, and increased strength.

Next, in the riding rice transplanter 1, when the earth leveling rotor 100 is raised and lowered by the motor 500, the connection structure between the raising and lowering gear 520 and the raising and lowering arm 530 will be explained using FIGS. 16(a) and 16(b). do.

Figure 16(a) is a partially enlarged schematic side view of the ground leveling rotor 100 to explain the connection configuration between the lifting gear 520 and the lifting arm 530, and Figure 16(b) is a partially enlarged schematic side view of the ground leveling rotor 100 to explain the lifting spring 550 provided between the center rotor 120 and the arm portion 540, which is formed integrally with the lifting gear 520 and is configured on the front side of the machine body of the lifting gear 520, and which is connected to the lifting arm 530.

In the riding rice transplanter 1 of the present embodiment, as shown in FIGS. 16(a) and 16(b), in a configuration in which the soil leveling rotor 100 is raised and lowered by the motor 500, there is a gap between the lifting gear 520 and the lifting arm 530. A ground leveling arm 540 is provided.

Further, the ground leveling arm 540 is rotatably connected to the upper end portion of the lifting arm 530 by a first connecting shaft 541. Further, an arcuate long hole 542 is formed at the rear end side of the ground leveling arm 540 (FIGS. 16(a) and 16(b)).

Further, the lifting gear 520 has a substantially fan shape, and a portion corresponding to the key point of the fan shape is rotatably connected to the ground leveling arm 540 by a rotation center 543 (FIG. 16(a) ), Figure 16(b)). Furthermore, a slide pin 521 is erected on the side surface of the lifting gear 520 at a position where it is loosely connected to an arc-shaped elongated hole 542 formed in the earth leveling arm 540 (FIGS. 16(a) and 16(a)). b)).

With the above configuration, when the soil leveling rotor 100 is pushed up due to unevenness in the field, even if the pushing up load or overload acts on the ground leveling arm 540, the leveling arm 540 will not move as shown in FIG. As shown in the figure, the elongated hole 542 formed in the earth leveling arm 540 rotates clockwise around the rotation center 543, and the slide pin 521 erected on the side surface of the lifting gear 520 rotates clockwise around the rotation center 543. Since it relatively slides within the elongated hole 542 toward the upper end side of the elongated hole 542, the transmission of the load and overload to the elevating gear 520 side is reduced.

As a result, when the soil tillage rotor 100 is pushed up due to unevenness in the field, the thrust load and overload can be released through the soil tillage arm 540, ensuring the durability of the soil tillage rotor 100, the lifting gear 520, etc. can.

Moreover, the riding rice transplanter 1 of this embodiment has a configuration in which the lifting spring 550 of the center rotor 120 is hooked on the ground leveling arm 540, as shown in FIG. 16(b).

This allows the center rotor 120 to be pulled in a direction closer to the vertical direction by hooking the lifting spring 550 to the leveling arm 540, compared to the conventional configuration in which the lifting spring of the center rotor is hooked to the lifting arm. . Further, since it is hooked on the arm that moves up and down the earth leveling rotor 100, the hook position of the pulling spring 550 changes in proportion to the up and down movement of the earth leveling rotor 100, so that the pulling angle and the width of the load displacement become smaller.

Incidentally, as shown in FIG. 3, a structure may be adopted in which the elevating gear 520 and the elevating arm 530 are directly connected.

That is, a configuration may be adopted in which the lifting gear 520 and the leveling arm 540 are integrally formed, and the slide pin 521 and the elongated hole 542 are eliminated. In this configuration, the lifting spring 550 may be hooked onto the upper part of the lifting arm 530.

Further, a rotation center 543 of the lifting gear 520 is provided, and a connecting shaft 541 provided on one side with respect to the rotation center 543 connects the upper end of the lifting arm 530 so as to be able to rise and fall. A lifting gear 520 is provided on the side. Therefore, the earth leveling rotor 100 can be raised and lowered in a state where a load is not easily applied to the motor 500.

Furthermore, a lifting arm 530 and a lifting gear 520 are provided to enable the earth leveling rotor 100 to rise and fall, and a gear frame 520a is provided to fix the lifting gear 520 to the front side of the motor stay 510, and the rotational force from the motor 500 is transferred to the lifting gear 520. The lifting arm 530 is connected to the front end of the lifting gear 520.

The gear frame 520a is fixed to the front side of the motor stay 510, and the gear frame 520a and the motor stay 510 may be formed integrally.

In the above embodiment, the left and right pair of rail guide members 310L, 310R are fixed straight along the longitudinal direction of the left and right rail members 330L, 330R (see FIG. 7(b)). For example, as shown in FIG. 11, a pair of left and right rail guide members 310L, 310R may be fixed at an angle of a predetermined angle θ with respect to the longitudinal direction of a pair of left and right rail members 330L, 330R. It may be fixed so as to approach the conveyance path side of the seedling tray 50. As a result, when the left and right pair of rail guide members 310L and 310R are in the non-retracted position (see the left rail guide member 310L indicated by the two-dot chain line in FIG. 9), the second rail guide portion 314 is moved in the longitudinal direction. Since the rear end side of the side edges 314c along the side edges 314c is located further inside the conveyance path of the seedling tray 50, even if the shape of the seedling tray 50 varies due to deformation or the like, the left and right pair The rail guide members 310L, 310R can easily catch the bottom part 51b of the seedling growing pot 51 of the seedling tray 50, and the pair of left and right rail members 330L, 330R can be rotated upward more reliably (see arrow F in FIG. 9). As a result, the pair of left and right rail members 330L and 330R can be switched from the second attitude to the first attitude more reliably. FIG. 11 is a partially enlarged view showing another configuration example in which a pair of left and right rail guide members 310L and 310R are fixed at an angle of a predetermined angle θ with respect to the longitudinal direction of a pair of left and right rail members 330L and 330R. It is a schematic plan view which shows the state which 330 L of rail members have taken the 2nd attitude|position.

In the above embodiment, the seedling tray storage basket 350 is transported to the front end while sliding on the pair of left and right rail members 330L, 330R, and then the empty seedling tray 50 that falls is moved by the sliding movement. The structure has a part that receives the seedling trays 50 while generally maintaining the inner position, and a part that allows the worker to pull forward the seedling trays 50 stacked in that part to change the position to the front-up position. However, the present invention is not limited to this, and for example, the empty seedling tray 50 that falls after being transported to the front end while sliding on the left and right pair of rail members 330L and 330R as the seedling tray storage basket 350, It may also be configured to have a receiving portion so as to take an upwardly forward posture compared to the posture during sliding movement. Even in the case of this configuration, similarly to the above, even when the riding rice transplanter 1 is in the process of planting in the field (at this time, the position of the planting device 200 is lowered), the seedling trays 50, which are stacked in a plurality, This makes it easier to take out all the seeds from the seedling tray storage basket 350 all at once.

In addition, in the above embodiment, the pair of left and right rail guide members 310L, 310R are abutted against and rotated by the bottom 51b of the seedling tray 50 transported downstream of the transport path, and the pair of left and right rail members 330L, 330R transition from the second position to the first position in conjunction with the transition from the non-retracted position to the retracted position. However, this is not limited to the above, and for example, as long as the pair of left and right rail members 330L, 330R can be transitioned from the second position to the first position, a configuration in which a pair of other left and right rail guide members are abutted against and rotated by the front end portions (see symbols 53a in Figures 4(a) and 4(b)) on both the left and right sides of the seedling tray 50 instead of the pair of left and right rail guide members 310L, 310R to transition from the non-retracted position to the retracted position may also be used. In addition, in this configuration, the pair of left and right rail members 330L, 330R can maintain the first position while the long side end portions 53a along the long sides 53L, 53R on both the left and right sides of the seedling tray 50 are in contact with the separate rail guide member. In this configuration, the long side end portions 53a on both the left and right sides of the seedling tray 50 are an example of the predetermined portions on both 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, 330R is configured to shift from the first posture to the second posture due to the action of the weight of the seedling tray 50 and the own weight of the pair of left and right rail members 330L, 330R. However, the present invention is not limited to this, and for example, the rear end portions of the pair of left and right rail members 330L, 330R and the pair of left and right rail member rear support stays 342L, 342R are connected via a torque spring (not shown). They may be rotatably connected. Specifically, the rear end of the rod-shaped member 333 is inserted into the hole of the spiral part of the torque spring, which has a spiral part between the front end at the beginning of winding and the rear end at the end of winding, and The front end of the torque spring is fixed to the rear end of the first rail part 332a, and the rear end of the torque spring is fixed to the pair of left and right rail member rear support stays 342L, 342R. By providing a torque spring as shown in FIG. The bottom portions 51b at both left and right ends of the seedling tray 50 come into contact with the side edges 314c along the longitudinal direction of the second rail guide portion 314 (see FIGS. 5 and 9), so that the pair of left and right rail members 330L, When 330R is shifted from the second attitude to the first attitude, the rotational torque that attempts to return from the first attitude to the second attitude, that is, the urging force that attempts to return from the first attitude to the second attitude, is applied to the pair of left and right rails. This is a configuration that occurs for members 330L and 330R.

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

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

The seedling transplanter of the present invention is useful as a seedling transplanter that improves the front-to-rear balance of the running body by reducing the weight and improving the strength of the parts that make up the soil leveling rotor, thereby increasing planting accuracy.

1 Riding rice transplanter 2 Traveling vehicle body 30 Lifting link device 50 Seedling tray 100 Land leveling rotor 100a Land leveling frame 110a First leveling stay 110b Second leveling stay 200 Planting device 201 Conveyance path 210 Seedling tray conveyance device 220 Seedling planting section 240a Planting Main frame 240b Side frame 300 Recovery device 500 Motor 510 Motor stay 520 Elevating gear 520a Gear frame 521 Slide pin 530 Elevating arm 540 Leveling arm 541 Connection shaft 542 Long hole 543 Center of rotation

Claims (1)

A seedling transplanter including a seedling tray transport device (210) for transporting seedling trays (50) from an upstream transport path (201a) of a transport path (201) toward a downstream transport path (210b), a seedling removal device (201c) for removing pot seedlings from the seedling tray (50) being transported by the seedling tray transport device (210), a planting device (200) for planting the pot seedlings removed by the seedling removal device in a field, a recovery device (300) for recovering the seedling tray (50) sent out from the end of the transport path (201), a lifting link device (30) for lifting and lowering the planting device (200), and a ground leveling device for leveling the field in which the pot seedlings are to be planted,
The planting machine includes a plurality of seedling removal devices (201c), a planting main frame (240a) supporting the planting device (200), and side frames (240b) fixed to the left and right sides of the planting main frame (240a), and the planting main frame (240a) is shaped to protrude forward from the side frames (240b);
The ground leveling device is composed of a rotor (100), a ground leveling frame (100a) that serves as a fulcrum for enabling the rotor (100) to be raised and lowered, and a ground leveling stay that holds the ground leveling frame (100a). The ground leveling stay is composed of a first ground leveling stay (110a) that is supported from the planting main frame (240a) and a second ground leveling stay (110b) that is supported from the side frame (240b). The first ground leveling stay (110a) is oriented toward the bottom of the machine body, and the second ground leveling stay (110b) is oriented toward the bottom of the machine body. The ground stay (110b) is oriented toward the front and lower side of the machine body, the planting main frame (240a) and the side frame (240b) are provided on the rear and lower side of the conveying path (201a), a motor stay (510) supporting a motor (500) for enabling the ground leveling device to be raised and lowered is attached to the planting main frame (240a), and the motor stay (510) is positioned above the planting main frame (240a) and the side frame (240b) and rear and lower of the recovery device (300);
A lifting arm (530) and a lifting gear (520) are provided to enable the rotor (100) to be raised and lowered with the ground leveling frame (100a) as a fulcrum;
A gear frame (520a) for fixing the lift gear (520) is provided on the front side of the machine body of the motor stay (510), and a rotational force from the motor (500) is transmitted to the lift gear (520). The lift arm (530) is connected to the front end of the lift gear (520),
A seedling transplanter comprising: a leveling arm (540) which connects the lifting arm (530) and the lifting gear (520) and has a pivot point (543); an upper end of the lifting arm (530) is connected to a connecting shaft (541) provided on one side of the pivot point (543) of the leveling arm (540) so that the arm can be raised and lowered; a long hole (542) is formed on the other side of the pivot point (543) of the leveling arm (540); and a slide pin (521) which can move within the long hole (542) is provided on the side of the lifting gear (520).