CN114532021A

CN114532021A - Seedling raising box and rice transplanter

Info

Publication number: CN114532021A
Application number: CN202011448416.1A
Authority: CN
Inventors: 越山隆广; 田部智也
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2020-11-27
Filing date: 2020-12-09
Publication date: 2022-05-27

Abstract

The present invention provides a seedling raising box capable of reducing the possibility that adjacent bed portions in a bed accommodating portion are partially connected during cultivation, and a rice transplanter suitable for using blanket-shaped seedlings cultivated in the seedling raising box. The seedling raising box is characterized in that a plurality of separating ribs (82) for dividing a seedbed into a plurality of areas are formed on the upper surface of a bottom plate (80), the upward protruding height (h2) of each separating rib (82) is set to be the same as the protruding height (h1) of a peripheral frame in the rising direction, a peripheral frame (81) protrudes to a position lower than the lower surface of the bottom plate (80), a lower separating rib (83) protruding downwards at a position overlapped with the separating ribs (82) in a plan view is formed on the lower surface side of the bottom plate (80), and the downward protruding amount (h4) of the lower separating rib (83) is set to be the same as the downward protruding amount (h3) of the peripheral frame (81).

Description

Seedling raising box and rice transplanter

Technical Field

The present invention relates to a seedling box formed with partitioning ribs that rise upward so as to divide a bed area into a plurality of sections, and a rice transplanter capable of transplanting blanket-shaped seedlings grown by the seedling box.

Background

The seedling raising box formed with the partition ribs standing upward so as to divide the bed area into a plurality of sections has, for example, the following structure.

That is, the seedbed accommodating section surrounded by the vertical and horizontal peripheral frames is divided into a plurality of parts by the partition members, thereby forming a plurality of seedbeds (see patent document 1).

In the seedling raising box described in patent document 1, a partition member that rises upward so as to divide a seedling bed area into a plurality of sections is erected to a height position that is approximately the same as the peripheral frame of the seedling raising box. By providing the higher partition members as described above, it is advantageous in that it is easy to grow a plurality of blanket-shaped seedlings in one seedling raising chamber.

However, in this structure, when the adjacent bed portions are more or less raised in the bed container, the beds may partially connect to each other by going over the upper side of the partition member, and there is room for improvement.

(Prior art document)

(patent document)

Patent document 1: japanese patent application publication No. 7-39254 "

Disclosure of Invention

(problems to be solved by the invention)

The present invention provides a seedling raising box capable of reducing the possibility that adjacent bed portions in a bed accommodating portion are partially connected during cultivation, and a rice transplanter suitable for using blanket-shaped seedlings cultivated in the seedling raising box.

(means for solving the problems)

The seedling raising box of the invention is provided with a seedbed accommodating part for accommodating a seedbed of blanket-shaped seedlings, and is characterized in that the seedbed accommodating part is provided with: a bottom plate for blocking and supporting the lower surface of the seedbed; and a peripheral frame which is rectangular in plan view and rises above the upper surface of the bottom plate so as to surround the periphery of the seedbed, wherein a partition rib is formed on the upper surface of the bottom plate, the partition rib rises upward so as to divide the seedbed area into a plurality of parts, the upward projecting height of the partition rib is set to be the same as the projecting height of the peripheral frame in the rising direction, the peripheral frame projects below the lower surface of the bottom plate, a lower partition rib is formed on the lower surface side of the bottom plate, the lower partition rib projects downward at a position overlapping the partition rib in plan view, and the projecting amount of the lower partition rib is set to be the same as the projecting amount of the peripheral frame downward.

According to the present invention, the partitioning beads which rise to the height position approximately equal to the height of the projection in the standing direction of the peripheral frame are formed on the upper surface of the bottom plate so as to divide the bed section into a plurality of sections, and the lower partitioning beads which project downward at the position overlapping with the partitioning beads in a plan view are also formed at the position lower than the lower surface of the bottom plate. The lower partitioning bead is also set to the same extent as the amount of downward projection of the peripheral frame.

Therefore, when the seedling raising boxes are stacked vertically for raising seedlings, the lower ends of the lower partitioning ribs of the upper seedling raising box abut against the upper ends of the partitioning ribs of the lower seedling raising box or are positioned very close to each other. Thereby, the seedbed accommodating parts are almost completely separated, and the state that the seedbed parts of the blanket-shaped seedlings existing in the separated space are connected with each other can be avoided to the maximum extent.

In addition, the lower partition reinforcing rib used for securing the separation also effectively functions as a reinforcing means of the seedling raising box itself.

In the present invention, it is preferable that the partition beads and the lower partition bead are formed at positions that bisect the bed container.

According to this structure, can cultivate the blanket form seedling of the width of two seedling carrying portions that are fit for carrying the seedling platform simultaneously in a case of growing seedlings to can produce high-efficiently.

In the present invention, it is preferable that the peripheral frame is formed in a rectangular shape having a vertical frame portion having a predetermined length and a horizontal frame portion shorter than the vertical frame portion, and the partitioning beads and the lower partitioning bead are formed in a direction parallel to the vertical frame portion.

According to this configuration, the seedling table of the rice transplanter for transplanting rice seedlings with unequal row pitches, i.e., a narrow row pitch and a wide row pitch, which is different from the row pitch of the planted rice seedlings, can be used to conveniently cultivate narrow and long blanket-shaped rice seedlings suitable for being carried on a narrow-width rice seedling carrying part.

In the present invention, it is preferable that the thickness of the partitioning bead and the lower partitioning bead in the direction along the lateral frame portion is smaller than the thickness of the vertical frame portion in the direction along the lateral frame portion.

According to this structure, the strength of the seedling box is mainly ensured by the peripheral frames such as the longitudinal frame portion, and the thickness of the partition reinforcing ribs and the lower side partition reinforcing ribs is reduced without affecting the partition effect, so that the seedling box itself can be reduced in size and weight.

The rice transplanter of the present invention is characterized in that a seedling planting device is equipped at the rear of a traveling body, the seedling planting device having: a seedling carrying table, which is provided with a seedling carrying part capable of carrying blanket-shaped seedlings at a plurality of parts; and a plurality of seedling transplanting mechanisms for taking out the blanket-shaped seedlings loaded on the seedling loading parts and transplanting the blanket-shaped seedlings in a farmland, wherein the seedling loading table has, in a state of being arranged transversely: a plurality of seedling placing parts, the width of which in the left-right direction along the left-right moving direction of the seedling placing table is set to a fixed value; and a hollow disc part which is positioned at a position adjacent to the seedling carrying part and is not used for carrying blanket-shaped seedlings, wherein the width of the left and right directions of the seedling carrying part corresponds to the blanket-shaped seedlings cultivated in the seedling box, the seedling carrying parts positioned at the adjacent positions are separated by side wall parts which are connected in a detachable mode, the connected side wall parts stretch from the lower end part to the upper end part of the seedling carrying part in a mode of separating the blanket-shaped seedlings which are separated from the left and right sides of the seedling containing part of the seedling box, and a seedling taking-out opening formed in each seedling carrying part corresponds to a seedling taking-out transplanting claw arranged in the seedling transplanting mechanism.

The rice transplanter having the structure comprises, in a horizontal arrangement state: a plurality of seedling placing parts, the width of which along the left-right direction of the seedling placing table is set to a fixed value; and a hollow disc part which is positioned adjacent to the seedling carrying parts and is not used for carrying blanket-shaped seedlings, and the seedling taking-out port formed on each seedling carrying part corresponds to the seedling taking-out transplanting claw arranged on the seedling transplanting mechanism.

With the above configuration, as a rice transplanter capable of transplanting rice seedlings at unequal row pitches, the width of the seedling placement unit in the left-right direction corresponds to the width of the left-right division of the seedling storage unit of the seedling box for growing blanket rice seedlings, and therefore, the rice transplanter is suitable for transplanting rice seedlings by storing divided blanket rice seedlings in each of the seedling placement units.

Drawings

FIG. 1 is an overall side view of a riding type rice transplanter.

Fig. 2 is a left side view of the seedling transplanting device.

Fig. 3 is a top view of the seedling planting device.

Fig. 4 is a rear view of the seedling planting device.

Fig. 5 is a front view showing the upper part of the seedling stage of the seedling transplanting device.

FIG. 6 is a perspective view showing the structure of the insertion part of the sliding door for a fertilizer application device at the upper part of the seedling stage.

Fig. 7 is a sectional view showing a connection structure of the seedling placing part of the seedling placing table.

Fig. 8 is an explanatory view showing a use state of the sliding door of the fertilizer application device.

Fig. 9 is a perspective view showing the seedling raising box.

Fig. 10 is a sectional view showing a state of use of the seedling raising box in a stacked state.

Description of the reference numerals

1: traveling machine body

5: seedling transplanting device

5B: seedling transplanting mechanism

8: seedling box

8A: seedling receiving part

54: inserting claw

60: seedling carrying table

62: seedling carrying part

62 a: seedling taking-out opening

62 d: side wall part

63: empty dish part

80: base plate

81: perimeter frame

81A: longitudinal frame part

81B: transverse frame part

82: separating reinforcing rib

83: lower side separation reinforcing rib

d 1: thickness of

d 2: thickness of

h 1: height of protrusion

h 2: height of protrusion

h 3: amount of protrusion

h 4: amount of protrusion

W1: first interval

W2: second interval

W3: width in left and right direction

Detailed Description

An example of an embodiment of the present invention will be described below with reference to the drawings.

The front-back direction and the left-right direction described in the present embodiment are as follows unless otherwise specified. That is, in the riding rice transplanter according to the present invention, the traveling direction on the forward side (see arrow F in fig. 1 and 3) of the travel machine body during operation travel is "forward", the traveling direction on the backward side (see arrow B in fig. 1 and 3) is "backward", the direction corresponding to the right side (see arrow R in fig. 3) with respect to the forward posture along the forward-backward direction is "right", and the direction corresponding to the left side (see arrow L in fig. 3) is "left".

(riding type transplanter Integrated Structure)

FIG. 1 is a side view showing the whole of a riding type rice transplanter as a rice transplanter of the present invention. Fig. 2 is a side view showing a seedling planting device 5 for 8-row planting installed at the rear of a riding type rice transplanter.

As shown in fig. 1 and 2, the riding rice transplanter is provided with a pair of left and right

steerable front wheels

1F and 1F at the front part and

rear wheels

1R and 1R as a pair of left and right drive wheels at the rear part of the travel machine body 1 below the machine body frame 10 of the travel machine body 1, and can travel automatically.

Power from an engine 20 of a power unit 2 provided at the front of the body is transmitted to the

rear wheels

1R, 1R. The power of the engine 20 is also transmitted to a fertilizer application device 4 and a seedling planting device 5 as a ground working device, the fertilizer application device 4 is mounted on the rear portion of the traveling machine body 1, and the seedling planting device 5 is connected to the rear portion of the machine body frame 10 of the traveling machine body 1 via a lifting link mechanism 11 capable of swinging up and down.

The traveling machine body 1 has an operation unit 3 on the rear side of the power unit 2 having the engine 20 built in the hood 21. In the steering unit 3, a steering unit 31 having a steering handle 31a and the like on the front is disposed on the steering unit floor 30. A driver seat 32 is disposed behind the steering unit 31, and a driver can steer the steering unit 3. A step floor 33 for ascending and descending from the ground is provided below both lateral ends of the cab floor 30.

Side pedals 22 connected to the front of the cab floor 30 are provided on both left and right sides of the hood 21 of the power unit 2. The side step 22 can be used to get on from the front side of the body.

As shown in fig. 1, the preliminary seedling stage 12 is provided laterally outside the right and left side steps 22 at the front of the travel machine body 1.

Although not shown, the operator's section floor 30 has different front and rear portions, with the width of the operator's section floor 30 in the lateral direction being different from that of the operator's seat 32. That is, the width in the left-right direction of the cab floor 30 closer to the rearward position of the cab seat 32 is wider than the width in the left-right direction of the cab floor 30 farther from the forward position of the cab seat 32.

(fertilizing equipment)

The riding type rice transplanter is provided with a fertilizer application device 4 as an example of an agricultural material supply device.

The fertilizer application device 4 has: a hopper 40 that stores powdered fertilizer as one example of agricultural materials; a feeding unit 41 for feeding the stored fertilizer from the hopper 40 by a predetermined amount; a conveying pipe 42 for conveying the fertilizer; the furrow opener 43 as a ground supply part guides the supplied fertilizer to the farmland.

The hopper 40 is provided at the rear end of the travel machine body 1 in a state where 4 container units having a storage space for the powder fertilizer are aligned in a row in the left-right direction and located on the back side of the driver seat 32. A delivery unit 41 is provided below each container unit. The fertilizer discharged from the discharge unit 41 is fed to a furrow opener 43 provided in the seedling planting device 5 via a conveying pipe 42, and is supplied to a groove formed in a field.

The delivery unit 41 is connected to: a carrying pipe 42 for carrying the fertilizer to the side of the furrow opener 43; and a wind-driving device 35 for conveying the fertilizer to the furrow opener 43 side by wind power.

As shown in fig. 1 and 8, the wind generating device 35 includes: an electric blower 36 for wind; a carrying duct 37a located in a supply path for carrying fertilizer to the seedling planting device 5 side; a discharge duct 37b as a discharge path for taking out surplus fertilizer to the outside; and an intake duct 37c for taking in the outside air heated and dried in the power unit 2 into the electric blower 36.

The feeding unit 41 has a feeding mechanism constituted by a feeding roller 45 and the like in the casing 44, feeds the fertilizer supplied from each container unit downward by a predetermined amount, and feeds the fertilizer to the conveying pipe 42 side by the high-pressure conveying wind supplied from the conveying duct 37 a.

The number of the delivery parts 41 is 4 so as to correspond to the container unit. Two conveying

pipes

42, 42 are connected to each delivery part 41, and fertilizer is delivered from 8 conveying pipes 42 connected to 4 delivery parts 41 to furrow openers 43 provided at 8 locations of the seedling planting device 5.

As shown in fig. 8, the delivery portion 41 is configured such that a sliding door 46 (corresponding to a fertilizer application stopper) can be inserted and removed from the outside of the outer case 44 so as to block and unblock the inflow of fertilizer from each container unit of the hopper 40 to the corresponding delivery portion 41.

By inserting the sliding door 46 into the exterior case 44 as shown by the solid line in fig. 8, the fertilizer stored in the hopper 40 can be prevented (blocked) from flowing toward the feeding portion 41. Further, by pulling out the fertilizer from the outer casing 44 as shown by the broken line in fig. 8, the fertilizer stored in the hopper 40 can be allowed (unblocked) to flow toward the feeding portion 41.

As shown in FIGS. 5 and 6, the sliding door 46, which is capable of being pulled out of the outer box 44, is supported on the upper portion of a seedling stage 60 of the seedling placing mechanism 5C, which will be described below. The specific structure for supporting the sliding door 46 on the upper portion of the seedling stage 60 will be described.

(seedling transplanting device)

As shown in fig. 1 to 4, a seedling planting device 5 as an example of a ground working device is coupled to a rear end portion of the lifting link mechanism 11.

The seedling transplanting device 5 has: an insertion frame 5A supported at the rear end of the lifting link mechanism 11; a seedling transplanting mechanism 5B arranged at the rear part of the transplanting frame 5A; a seedling carrying mechanism 5C for carrying blanket-shaped seedlings at the upper position of the transplanting frame 5A and moving horizontally back and forth in the left-right direction; and a soil preparation device 5D located at a lower portion of the insertion frame 5A.

The insertion frame 5A is connected to the elevation link mechanism 11 via a rear link 13 provided at a rear end portion of the elevation link mechanism 11, and is supported so as to be able to yaw around a swing axis X1 in the front-rear direction.

As shown in fig. 2 and 3, the insertion frame 5A includes: a supply tank 50 connected to the rear link 13; a tool bar 51 fixed to the supply box 50 and extending to the left and right; 5 implant gear boxes 52, which are long in the front-rear direction, extend rearward from the rear surface side of the tool bar 51.

The power from the engine 20 on the traveling machine body 1 side is transmitted to the supply tank 50 via the interposed drive shaft 14.

The power transmitted to the supply tank 50 is input to a transmission mechanism (not shown) provided inside the implant transmission case 52 via transmission shafts 50a extending laterally from both sides of the supply tank 50.

At the rear of the transplanting transmission case 52, a rotary case 53 (corresponding to a rotary case) as the seedling transplanting mechanism 5B is supported at a lateral position of the transplanting transmission case 52 so as to be rotatable about a lateral axis oriented in the left-right direction. A claw support box 55 having a planting claw 54 as the seedling planting mechanism 5B is supported at both end portions of the respective

rotating boxes

53, 53 so as to be relatively rotatable.

As shown in fig. 3 and 4, the rotating boxes 53 of the seedling transplanting mechanism 5B are arranged on both sides of the middle 3 transplanting transmission boxes 52 of the 5 transplanting transmission boxes 52 arranged in a lateral arrangement, with the rotating boxes 53 sandwiching the transplanting transmission boxes 52. The rotary case 53 is supported so as to be rotatable about the lateral axis at a position facing the lateral side facing the center side of the implant gear case 52 with respect to the two outer 2 implant gear cases 52.

In the seedling transplanting mechanism 5B, the rotating case 53 is disposed at a position closer to the transplanting transmission case 52, and the claw support case 55 is supported by the transplanting transmission case 52 together with the rotating case 53 in a state of being located at a position farther from the transplanting transmission case 52 than the rotating case 53, in terms of the configuration of being disposed in the transplanting transmission case 52.

The distance in the left-right direction between the transplanting claws 54 provided in the claw support case 55 is a second distance W2 corresponding to a wider row pitch of the row pitches of the transplanted seedlings, the distance in the left-right direction between the transplanting claws 54 positioned at positions sandwiching the transplanting transmission case 52 is a first distance W1 corresponding to a narrower row pitch of the row pitches of the transplanted seedlings, and the distance between the transplanting claws 54 not positioned across the transplanting transmission case 52 is a second distance W2 corresponding to a wider row pitch of the row pitches of the transplanted seedlings.

Auxiliary frames 56 are provided at both ends of the tool bar 51. The auxiliary frame 56 is attached so as to be capable of changing its posture between an auxiliary posture along the horizontal direction shown in fig. 3 and 4 and an upright posture with a free end side thereof facing downward, which is not shown, about the horizontal axis.

In the auxiliary posture as shown in the figure, when the seedling transplanting device 5 is operated, the seedling support 60 which moves back and forth in the transverse direction of the seedling support mechanism 5C, the sliding plate 61 which guides the transverse movement of the seedling support 60, and the like can be easily prevented from coming into contact with other objects. In the standing posture, the seedling planting mechanism 5B and the seedling placing mechanism 5C including the seedling carrying table 60, the sliding plate 61 and the like of the seedling planting device 5 in the non-operation state can be supported in a state of tilting from the ground.

As shown in fig. 3, the length L1 in the lateral direction of the tool lever 51 and the length L2 in the lateral direction including the tool lever 51 and the auxiliary frame 56 are set to be longer than the length L3 in the lateral direction of the slide plate 61 positioned below the seedling stage 60.

A floating plate unit 70 as a soil preparation device 5D is provided below the tool bar 51 and the transplanting transmission case 52.

The floating plate unit 70 is composed of a combination of 5 ground floating plates, i.e., one central floating plate 71 located at the center in the left-right direction, a pair of left and right side floating plates 72 located on the left and right sides, and a pair of left and right end floating plates 73 located laterally outside the side floating plates 72, and is used for 8-row transplanting.

The respective floating

plates

71, 72, 73 constituting the floating plate unit 70 support the front end side so as to be vertically swingable, and support the vicinity of the rear end portion so as to be height-adjustable by means of support links 74.

These floating

plates

71, 72, 73 contact the field surface in the lowered operation state of the seedling planting device 5, support the seedling planting device 5 so that the seedling planting depth of each seedling planting mechanism 5B is a predetermined depth, and perform soil preparation near the portion where the seedling planting is performed by the seedling planting mechanism 5B.

The furrow opener 43 is attached to each of the floating

plates

71, 72, 73, and the furrow opener 43 opens a furrow for guiding and burying the fertilizer supplied from the fertilizer application device 4 to the mud surface.

As shown in fig. 3, the center float plate 71 is located substantially at the center between the right and left

front wheels

1F, 1F and the right and left

rear wheels

1R, 1R.

The track width L4 of the left and right

rear wheels

1R, 1R is narrower than the track width L5 of the left and right front wheels 1F, so that the

rear wheels

1R, 1R pass inside the passing track of the

front wheels

1F, 1F. By reducing the track width L4 of the

rear wheels

1R, 1R as described above, the left and right side floating plates 72 are arranged so as to pass through the travel locus of the left and right rear wheels 1R.

(seedling carrying mechanism)

The seedling placing mechanism 5C, which places blanket-like seedlings at the upper position of the transplanting frame 5A and moves back and forth and laterally in the right and left direction, has a seedling placing table 60 capable of swinging back and forth in the right and left direction. The seedling stage 60 has, in a horizontally aligned state: 8 seedling carrying parts 62 capable of carrying 1 row of blanket seedlings; and 3 empty tray sections 63 on which the blanket-shaped seedlings are not placed.

At the lower part of the seedling stage 60, a sliding plate 61 is disposed at a position capable of receiving the lower end part of the blanket-shaped seedling. The sliding plate 61 is fixed above the transplanting frame 5A and is configured to guide the seedling table 60 to move back and forth in the lateral direction. Further, the sliding plate 61 is formed with 8 seedling take-out ports 62a corresponding to the respective seedling placing parts 62. That is, the sliding plate 61 supports the blanket-shaped seedlings together with the seedling placing part 62, and has the function of the seedling placing part 62. Therefore, in the present specification, the seedling outlet 62a formed in the seedling placing part 62 means the seedling outlet 62a formed in the sliding plate 61.

The slide plate 61 functions not only as the seedling placing section 62 but also as a guide member for the seedling stage 60 that moves in the transverse direction to and fro. Therefore, the slide plate 61 is not moved laterally integrally with the seedling placing section 62, but is fixed at an upper position of the transplanting frame 5A so as to be movable relative to the seedling placing section 62 and the empty tray section 63 of the seedling placing table 60, and is supported so as to receive the seedling placing section 62 and the empty tray section 63 from below.

The seedling placing surface 62b of each seedling placing part 62 of the seedling placing table 60 is provided with a seedling longitudinal transfer belt 62c which rotates in a ring shape, and a known longitudinal transfer mechanism (not shown) which transfers the placed blanket-shaped seedlings longitudinally by a predetermined amount to the seedling take-out port 62a side. In addition to the vertical transfer mechanism, although not shown, there is also a known lateral transfer mechanism for reciprocating the seedling stage 60 in the left-right direction. A seedling placing mechanism 5C including the above-described longitudinal transfer mechanism and the lateral transfer mechanism is formed on the seedling stage 60.

The width W3 in the left-right direction of the seedling placing section 62 is set to be approximately the same as the divided seedling width M2 obtained by halving the width M1 in the left-right direction of the seedling bed housing section 8A for growing blanket seedlings in the seedling raising box 8 described below.

In the embodiment of the present invention, the width W4 in the left-right direction of the vacant disk portion 63 is approximately the same as the width W3 in the left-right direction of the seedling placing portion 62, and can be appropriately set according to the set size of the wider row pitch among the row pitches of the seedlings to be planted by the seedling planting device 5.

By setting the lateral width W3 of the seedling placement section 62 and the lateral width W4 of the vacant tray section 63 as described above, the arrangement interval between the seedling extraction port 62a and the insertion claw 54 in the lateral direction is set to be unequal intervals such as a first interval W1 corresponding to a predetermined narrow row pitch and a second interval W2 corresponding to a wider row pitch which is wider than the narrow row pitch. The lateral transfer mechanism of the seedling stage 60 reciprocates the seedling stage 60 in the left-right direction within a range corresponding to the first interval W1.

The first interval W1 is set to coincide with the interval between the seedling extraction ports 62a formed in the adjacent seedling placement sections 62 without sandwiching the empty tray section 63, and the second interval W2 is set to coincide with the interval between the seedling extraction ports 62a formed in the adjacent seedling placement sections 62 with sandwiching the empty tray section 63.

As shown in fig. 4, the portion having the second interval W2 is positioned above the central floating plate 71 and above the left and right side floating plates 72 of the floating plate unit 70, and the passing trajectory of the

rear wheels

1R, 1R overlaps the width range of the second interval W2 of the portion positioned above the side floating plates 72. As shown in fig. 3 and 4, the implant gear box 52 is disposed in the space having the second space W2.

In this structure, a rib 64 extending in a direction intersecting the direction in which the blanket-like seedling is inserted from above is provided upright on the rear upward surface 63a of the upper portion of the empty tray portion 63.

The operation for replenishing seedlings can be accurately performed by providing the reinforcing rib 64 on the upper portion of the empty tray portion 63. That is, when the driver or the assistant operator on the traveling machine body 1 takes out the blanket-shaped seedlings ready for the seedling stage 12 and replenishes the seedlings to the seedling stage 60 located rearward, if the blanket-shaped seedlings are inserted into the empty tray part 63 by mistake, the ribs 64 abut against the tips of the blanket-shaped seedlings to be inserted and serve as stoppers.

This makes it possible for the operator to easily find the wrong seedling replenishing location, thereby reducing the possibility of performing an erroneous operation.

As shown in fig. 5 and 6, an operating lever 65 of a row clutch (not shown) is provided at 5 positions on the upper portion of the front surface of the seedling stage 60, which is the surface opposite to the seedling placing surface 62b of the seedling placing part 62 of the seedling stage 60 and the rearward and upward surface 63a of the empty tray part 63. The split clutch operated by the operation lever 65 is used to connect and disconnect the power transmitted from the transmission mechanism in the implant transmission case 52 to the rotation case 53, and the split clutch is provided in 5 implant transmission cases 52 and can be connected and disconnected by the operation levers 65.

The respective operation levers 65 and the gang clutches are provided in a state corresponding to each of the transplanting transmission cases 52.

Taking the insertion transmission case 52 present at 3 positions near the center in fig. 3 as an example, a pair of right and left rotation cases 53 are provided in a general insertion transmission case 52. Each of the rotary cases 53 is provided with an insertion claw 54 on a surface thereof remote from the insertion transmission case 52. As described above, the distance between the implanting claws 54 provided so as to sandwich the implanting transmission case 52 and the left and right rotation cases 53 inevitably tends to increase. Therefore, the intervals between the insertion claws 54 provided in a state of sandwiching the insertion transmission case 52 and the left and right rotation cases 53 are arranged so as to correspond to the positions where insertion is performed at a wide pitch.

In addition, in the present embodiment, the insertion transmission case 52 is also provided at 2 locations at each of the left and right end portions in fig. 3. The insertion gear box 52 at the end portion is provided with a rotation box 53 at a side close to the center side in the left-right direction, and the rotation box 53 is provided with an insertion claw 54 at a surface of a side far from the insertion gear box 52.

In the present embodiment, as described above, the row clutches are provided in the insertion transmission case 52 of 5 sites, that is, the insertion transmission case 52 of 3 sites provided with the pair of right and left rotation cases 53 and the insertion transmission case 52 of 2 sites provided with one rotation case 53 on the side closer to the center in the right-left direction, respectively, and the operation levers 65 corresponding to the respective row clutches are arranged so as to be able to communicate with and block the respective row clutches, respectively.

The split clutches provided as described above are configured such that the split clutches of 2 positions at the end portion can be connected to and disconnected from the drive of one rotating case 53 of the implant transmission case 52 provided at the end portion in accordance with the operation of each operating lever 65. The split clutches of the insertion transmission case 52 provided at 3 positions near the center are configured to be able to simultaneously connect and disconnect the drive of the two right and left rotation cases 53 provided in the insertion transmission cases 52 in accordance with the operation of the respective operation levers 65.

The fertilizer application device 4 is provided with 4 delivery parts 41, each delivery part 41 is provided with a delivery roller 45, two conveying pipes 42 are connected to each

delivery part

41, and 8 conveying pipes 42 in total are connected so as to be able to supply fertilizer to furrow openers 43 at fertilizing target positions of 8 positions.

Each delivery unit 41 has sliding door insertion portions 47 at two locations above the delivery drum 45, and the sliding doors 46 can be inserted into and removed from the sliding door insertion portions 47. Thereby, supply and stop of the fertilizer can be performed for each row by pulling the door 46.

As described above, the number of the feeding portions 41 is smaller than the number of the sorting clutches, and the supply of the fertilizer can be stopped by pulling the door 46 according to the number of the seedling planting mechanisms 5B stopped from being driven by the sorting clutches.

As shown in fig. 5 and 6, a holding hole 63b capable of holding the sliding door 46 in an inserted state is formed in the upper portion of the empty pan portion 63, and the sliding door 46 prevents the fertilizer of the fertilizer application device 4 from being fed out. The holding holes 63b are formed at two locations above the empty tray 63, and hold the tip ends of the two sliding doors 46 by being inserted thereinto.

The sliding door 46 is a member that can be arbitrarily inserted into and removed from the holding hole 63b, and can also be arbitrarily inserted into and removed from the sliding door insertion portion 47 of the fertilizer applicator 4.

The necessity of inserting the tip end portion of the sliding door 46 into the sliding door insertion portion 47 of the fertilizer application device 4 to stop the supply of fertilizer means to stop the seedling planting by the seedling planting mechanism 5B at the stop target portion by cutting the gang clutch. At this time, since the sliding door 46 is present in the holding hole 63b provided in the upper portion of the empty pan 63 at a position close to the operating lever 65 for cutting the branching clutch and the sliding door insertion portion 47 of the fertilizer application device 4 to be stopped, the operation of cutting the branching clutch and the operation of stopping the fertilizer feed from the fertilizer application device 4 can be performed quickly and easily.

Operating rods 65 for operating the sorting clutches are provided at 5 locations of the upper portion of the front surface of the seedling table 60. The holding hole 63b capable of holding the sliding door 46 inserted therein is provided above the empty tray portion 63 and is not provided above the seedling table 62. This is because it is difficult to secure a space for installing the holding hole 63b in the upper portion of the seedling placing portion 62, and it is not realistic to perform the seedling transplanting work in a state where all or most of the gang clutches are stopped, and therefore, convenience can be secured in reality by providing the space in the upper portion of the empty tray portion 63.

As shown in fig. 4 and 7, the seedling stage 60 is provided with side wall portions 62d that separate the adjacent

seedling placing portions

62, 62 from each other. The side wall portion 62d extends over a range from the lower end to the upper end of the seedling placing portion 62.

The side wall portion 62d is formed by connecting both the forming

surface plate members

66, 66 constituting the adjacent

seedling placing portions

62, 62.

That is, the rising pieces 66a, which are the side wall portions 62d of the seedling placing portions 62, are provided at the connecting portions between the adjacent forming

surface plate materials

66, 66. The top of the rising piece 66a is sandwiched by the upper abutment plate 67a and the lower abutment plate 67b, and is fastened and fixed by the fastening bolt 68.

Thus, in the case of forming the seedling table 60, the seedling table 60 can be formed in different rows by using the molding

surface plate materials

66, 66 divided into a plurality of parts instead of forming the entire continuous molded article, and connecting the adjacent

seedling placing parts

62, 62 to each other with the molding

surface plate materials

66, 66.

(seedling raising box)

Fig. 9 and 10 show a seedling box 8 having a seedbed housing section 8A for housing a seedbed of blanket-shaped seedlings for use in the above-described riding type rice transplanter.

The seedbed housing section 8A includes: a bottom plate 80 for blocking and supporting the lower surface of the seedbed; and a peripheral frame 81 which is rectangular in plan view and rises above the upper surface of the bottom plate 80 so as to surround the periphery of the bed. Further, a partition rib 82 that rises upward so as to divide the bed area into a plurality of sections is formed on the upper surface of the bottom plate 80.

The peripheral frame 81 is formed in a rectangular shape having a vertical frame portion 81A of a predetermined length and a horizontal frame portion 81B shorter than the vertical frame portion 81A.

The partition ribs 82 are formed at positions bisecting the bed container 8A in a direction intersecting the lateral frame portion 81B and parallel to the vertical frame portion 81A.

The upward projecting height h2 of the partitioning rib 82 is set to be the same as or the same as the projecting height h1 in the standing direction of the peripheral frame 81.

The peripheral frame 81 is formed to protrude downward from the lower surface of the bottom plate 80. Further, a lower partitioning bead 83 is formed on the lower surface side of the bottom plate 80, and the lower partitioning bead 83 protrudes downward at a position overlapping with the dividing bead 82 in a plan view. Therefore, the lower partition beads 83 are also formed in a direction intersecting the horizontal frame portion 81B and parallel to the vertical frame portion 81A.

The downward projecting amount h4 of the lower partition bead 83 is set to be approximately the same as the downward projecting amount h3 of the lower surface of the bottom plate 80 of the peripheral frame 81.

As shown in fig. 10, when the seedling raising boxes 8 having the above-described configuration are placed in a vertically stacked state, the lower ends of the lower partitioning ribs 83 of the upper stage seedling raising box 8 abut against or are extremely close to the upper ends of the partitioning ribs 82 of the lower stage seedling raising box 8. Thereby, one bed housing part 8A is almost completely separated. So that a state in which the bed portions of the blanket seedlings existing in the divided spaces are even slightly connected to each other can be avoided.

Therefore, when a plurality of blanket-shaped seedlings are grown using one seedling raising box 8, the seedbeds can be reliably prevented from being connected to each other. Further, the lower partition reinforcing rib 83 projecting downward from the bottom plate 80 for securing the separation can also effectively function as a reinforcing member of the seedling raising box 8 itself.

As shown in fig. 10, the thickness d2 of the partitioning bead 82 and the lower partitioning bead 83 in the direction of the lateral frame portion 81B is thinner than the thickness d1 of the vertical frame portion 81A in the direction of the lateral frame portion 81B.

The width M1 in the horizontal direction of the bed container 8A of the seedling box 8 is approximately 2 times the width W3 in the horizontal direction of the seedling placing part 62, and is set to be approximately the same as the width W3 in the horizontal direction of the seedling placing part 62 by halving.

That is, the seedling box 8 can grow 2 seedlings in a carpet shape having a divided seedling width M2 that is approximately the same as the horizontal width W3 of the seedling placement part 62.

Although not shown, the bottom plate 80 of the bed container 8A is naturally formed with a plurality of small holes for allowing the roots of seedlings to protrude.

(other embodiments)

Next, another embodiment will be described. A plurality of the following embodiments may be combined without contradiction. The scope of the present invention is not limited to the contents of these embodiments.

(1) In the above embodiment, the left-right direction width W4 of the empty tray portion 63 is set to be the same as the left-right direction width W3 of the seedling placing portion 62, but the configuration is not necessarily limited thereto.

For example, the width W4 in the left-right direction of the vacant tray 63 may be set to be larger or smaller than the width W3 in the left-right direction of the seedling placement section 62, and the widths W3 and W4 in the left-right direction may be set appropriately so as to be suitable for the row pitch of the inserted seedlings.

The other structures may be the same as those of the above embodiment.

(2) In the above embodiment, in order to prevent the insertion of the blanket-shaped seedling into the empty tray portion 63, the rib 64 is provided on the upward surface 63a of the empty tray portion 63 in a direction intersecting the insertion direction of the blanket-shaped seedling, but the configuration is not necessarily limited thereto.

For example, a stepped portion or the like may be formed to be higher or narrower on the inner side than the inlet side in the insertion direction, and appropriate shape change may be freely performed, and in short, attention may be paid or obstacles may be provided so that the blanket-shaped seedlings are not inserted into the empty tray portion 63.

The other structures may be the same as those of the above embodiment.

(3) In the above embodiment, the auxiliary frames 56 are connected to both ends of the tool bar 51, but the present invention is not limited to this configuration.

That is, since the length L1 in the left-right direction of the tool lever 51 is set to be longer than the length L3 in the left-right direction of the slide plate 61, if the purpose is to protect only the end of the slide plate 61 by the tool lever 51, it is not necessary to provide a dedicated auxiliary frame 56. Therefore, the auxiliary frame 56 may be omitted. In the embodiment, a structure capable of switching the posture to the standing posture with the free end side facing downward is added as the auxiliary frame 56, and the seedling planting device 5 in the non-operation state is supported in a state capable of being raised from the ground.

The other structures may be the same as those of the above embodiment.

(4) In the above embodiment, the sliding door 46 is inserted into the sliding door insertion portion 47 of the fertilizer application device 4 to stop the fertilizer from flowing down from the hopper 40 to the feeding portion 41 as a mode of stopping the fertilizer supply from the fertilizer application device 4, but the configuration is not necessarily limited thereto.

For example, instead of using the sliding door 46, a configuration may be adopted in which a clutch device capable of stopping the feed rollers 45 is provided in a fertilizer flow-down path connected to each of the conveying pipes 42, although not shown, and the supply of fertilizer is stopped.

The other structures may be the same as those of the above embodiment.

(5) In the above embodiment, the structure in which the floating plate unit 70 configured by combining 5 floating plates on the ground is provided as the soil preparation device 5D is shown, but the structure is not necessarily limited to this structure. For example, as the ground contact float, a continuous land preparation float long in the left-right direction, or a plurality of land preparation floats such as 2 or more may be used. Further, a land preparation rotor or a rake plate, which is not a floating plate, may be used.

The other structures may be the same as those of the above embodiment.

(6) In the above embodiment, the seedling raising box 8 has been shown as a structure in which the partitioning ribs 82 are formed at positions that bisect the bed container 8A in a direction that intersects the lateral frame portions 81B and is parallel to the vertical frame portions 81A, but the present invention is not necessarily limited to this structure. For example, when the bed container 8A is divided, the bed container may be divided into two parts so that one side is enlarged and the other side is reduced, without being divided into two parts.

Further, the number of the partition plates may be three or more instead of two.

The other structures may be the same as those of the above embodiment.

(7) In the above embodiment, the empty tray part 63 is not provided with the blanket-like seedlings, but the present invention is not limited to this structure. For example, the width W4 in the left-right direction of the tray part 63 may be adjusted to allow the placement of the preliminary blanket-shaped seedlings. At this time, the rib 64 may be temporarily movable or detachable.

The other structures may be the same as those of the above embodiment.

(availability in industry)

The present invention is not limited to 8-row rice transplanter, and can be applied to rice transplanter capable of transplanting rice seedlings with less than 8 rows and rice transplanter having more than 8 rows.

Claims

1. A seedling raising box has a seedbed accommodating section for accommodating a seedbed of blanket-shaped seedlings,

the seedling raising box is characterized in that,

the seedbed accommodating part is provided with: a bottom plate for blocking and supporting the lower surface of the seedbed; and a peripheral frame which is rectangular in plan view and stands upward from the upper surface of the bottom plate so as to surround the periphery of the seedbed,

a partition rib formed on an upper surface of the bottom plate, the partition rib rising upward so as to divide the bed area into a plurality of parts,

the upward projecting height of the partition ribs is set to be the same as the projecting height of the peripheral frame in the standing direction,

the peripheral frame is projected to a position lower than the lower surface of the bottom plate,

a lower partitioning reinforcing rib is formed on the lower surface side of the bottom plate, and the lower partitioning reinforcing rib protrudes downward at a position overlapping with the partitioning reinforcing rib in a plan view,

the downward projecting amount of the lower partitioning reinforcing rib is set to the same degree as the downward projecting amount of the peripheral frame.

2. Seedling raising box as claimed in claim 1,

the partition rib and the lower partition rib are formed at positions that bisect the bed accommodating section.

3. Seedling raising box as claimed in claim 1 or 2,

the peripheral frame is formed in a rectangular shape having a vertical frame portion having a predetermined length and a horizontal frame portion shorter than the vertical frame portion,

the partition reinforcing bead and the lower-side partition reinforcing bead are formed in a direction parallel to the vertical frame portion.

4. Seedling raising box according to claim 3,

the thickness of the partitioning beads and the lower partitioning bead in the direction along the lateral frame portion is thinner than the thickness of the vertical frame portion in the direction along the lateral frame portion.

5. A rice transplanter is characterized in that a rice transplanter is provided,

a seedling transplanting device is arranged at the rear part of the traveling machine body,

the seedling transplanting device has: a seedling carrying table, which is provided with seedling carrying parts capable of carrying blanket-shaped seedlings at a plurality of parts; and a plurality of seedling transplanting mechanisms for taking out the blanket-shaped seedlings loaded on the seedling loading parts and transplanting the seedlings in farmlands,

the seedling carrying table is provided with the following components in a transverse arrangement state: a plurality of seedling placing parts, the width of which in the left-right direction along the left-right moving direction of the seedling placing table is set to a fixed value; and a vacant disk part which is positioned adjacent to the seedling carrying part and is not used for carrying blanket-shaped seedlings,

the seedling placing part has a width in the left-right direction corresponding to the blanket-shaped seedlings grown in the seedling raising box as claimed in claims 1 to 4,

the seedling placing parts located at adjacent positions are separated from each other by side wall parts which are detachably connected,

the coupled side wall portions extend across a range from a lower end portion to an upper end portion of the seedling placing portion so as to partition blanket-shaped seedlings divided left and right in the seedling receiving portion of the seedling raising box,

the seedling taking-out port formed on each seedling carrying part corresponds to a seedling taking-out transplanting claw arranged on the seedling transplanting mechanism.