JP2002305919A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-row type seedling transplanter which can efficiently carry out a seedling-transplanting work. SOLUTION: This seedling transplanter is characterized by disposing two seedling-planting devices 5, 5 at the positions of a first and a fourth seedling- supplying cup 40a, 40b, respectively, among a plurality of supply cups 40 arranged and transported in a row.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for planting seedlings while propelling the body with a traveling propelling body such as wheels.

[0002]

2. Description of the Related Art As a seedling transplanter for vegetable seedlings, there is a structure in which seedlings are planted in a ridge while the body is propelled by a traveling propelling body such as a wheel passing on both sides of the ridge. Many seedling transplanters of this type were configured with single-row planting, but recently, a two-row seedling transplanter equipped with a seedling supply device and a seedling planting device that can plant two rows of seedlings in one ridge has been used. It has come to be.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a double-row seedling transplanter capable of efficiently performing a seedling transplantation operation.

[0004]

In order to solve the above problems, the present invention employs the following constitution. The first and fourth seedling supply cups 40a among a plurality of supply cups 40 in which the two seedling planting apparatuses 5, 5 are conveyed in a line.
It is a seedling transplanter characterized by being arranged at the position of 40b.

[0005]

Since the seedling transplanter is constructed as described above, it supplies a large number of seedlings to the seedling supply cup.
It can be planted in a row, and the seedling transplanting operation can be performed very efficiently.

[0006]

Embodiments of the present invention will be described with reference to the drawings. 1 to 11 are configuration diagrams of an example of the seedling transplanter of the present invention. The seedling transplanter 1 includes a traveling section 1a provided with traveling wheels 2, 2, 3, and 3 as traveling propulsion bodies, and two seedling transplanting sections 1b including a seedling supply device 4, a seedling transplanting device 5, and the like.
(L), 1b (R), and the seedling planting parts 1b, 1b,
The configuration is such that the vegetable seedling is planted on the upper surface of the ridge U in b. The operator appropriately steers the fuselage with the steering handle 6 provided at the rear of the fuselage, and during the planting operation, the seedling planting section 1.
The seedlings are supplied to the respective seedling supply devices 4 and 4 while walking on the side of b and 1b. Hereinafter, the configuration of each unit will be described.

[0007] The traveling section 1a includes a traveling section transmission case 7
The engine 9 is arranged in front of the vehicle. A hydraulic pump 10 driven by the power of the engine 9 is provided on the left side of the engine 9.
Is provided. A fuel tank 11 and the like are provided above the engine 9, and a bonnet 12 covers the upper side thereof. A front frame 13 having a rectangular shape in a side view is integrally provided on a rear portion of the traveling portion transmission case 7, and a front end portion of a main frame 14 connecting the traveling portion 1 a and the steering handle 6 is fixed to a right end portion on the rear surface of the front frame 13. Are linked. The main frame 14 is provided with the right seedling planting section 1b.
It extends backward below (R), curves obliquely upward on the way, and extends as it is to the rear position of the seedling planting portion 1b (R). The steering handle 6 is fixedly attached to the rear end.

[0008] Rotatable rear wheel transmission pipes 15L and 15R, into which a rear wheel transmission shaft is inserted, protrude left and right from the left and right side surfaces of the traveling section transmission case 7. The left rear wheel transmission pipe 15L is longer than the right rear wheel transmission pipe 15R. The vicinity of the distal ends of the rear wheel transmission pipes 15L and 15R is the front frame 1
3 are rotatably supported by bearings 15b, 15b attached to support pipes 15a, 15a fixed to the support pipes 15.
The traveling chain cases 16, 16 are integrally attached to the distal ends of the left and right rear wheel transmission pipes 15L, 15R, and drive wheels are attached to the rear wheel axles 2a, 2a provided at the distal ends of the traveling chain cases 16, 16. A certain rear wheel 2, 2 is attached. Power is transmitted from the traveling unit transmission case 7 to the rear wheel axles 2a, 2a via the shafts in the rear wheel transmission pipes 15L, 15R and the chains 16a, 16a in the traveling chain cases 16, 16.

On the lower side of the engine 9, a front wheel support pipe 1 is provided.
Reference numeral 7 is provided to be swingable about a pivot shaft 17a in the front-rear direction. The front wheel support pipe 17 has a portion on the left side of the pivot shaft 17a longer than that on the right side. The front wheel support pipe 17 is supported by an engine mounting base 8 provided below the engine 9. Front wheel support shafts 17a, 17a, 1
7a is slidably fitted, and its front wheel support shaft 17
Front wheel support rods 18, 18 are attached to the distal ends of the rods 17a, 17a so as to be adjustable in height, and the front wheels 3, 3, which are driven wheels, are pivotally supported at the lower ends of the rods.

The traveling section 1a is provided with a body control mechanism for controlling the position of the body by moving the rear wheels 2, 2 up and down with respect to the body. The body control mechanism includes a lifting cylinder 21 provided rearward from a hydraulic valve unit 20 disposed on the traveling section transmission case 7.
A balance rod 22 is attached to the distal end of one piston rod 21a so as to be rotatable about a vertical axis. The front and rear ends of the piston rod 21a of the lifting cylinder 21 slide along a guide shaft 24 supported by the hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. Swing arm 2 fixed to left and right ends of balance rod 22 and rear wheel transmission pipes 15, 15
5 and 25 are connected via connecting rods 26 and 26. The left connecting rod 26 has a rolling cylinder 27 incorporated therein, and its length can be changed by expanding and contracting the cylinder 27.

The lifting cylinder 21 and the rolling cylinder 27 operate by controlling a hydraulic oil supplied from the hydraulic pump 10 by a control valve (not shown) in the hydraulic valve unit 20. By the expansion and contraction operation of the lifting cylinder 21, the left and right rear wheels 2, 2 move up and down by the same amount in the same direction with respect to the body, and the body is moved up and down. When the rolling cylinder 27 is extended and contracted, the right and left rear wheels 2 and 2 move up and down with respect to the body by the same amount in the opposite direction, and the body is inclined right and left.

The seedling planting portions 1b, 1b are arranged in parallel on the left and right, the right seedling planting portion 1b (R) is located behind the traveling section transmission case 7 in plan view, and the left seedling planting portion 1b (L). Is located on the left side. The two seedling planting portions 1b, 1b have substantially the same configuration. The lower part of the seedling plant transmission unit 30 transmitted from the traveling unit transmission case 7 is fixed to the upper surface of the front frame 13, and a planting transmission pipe 30 a is provided on the left side from the upper part of the seedling plant transmission case 7. Have been. The bases of the first planting transmission cases 31, 31 of the left and right seedling planting parts 1b, 1b are fixed to the planting transmission pipe 30a, respectively.
The base of the second planting transmission case 32 is fixedly attached to the front end of the first planting transmission case 32. The first planting transmission cases 31 and 31 and the second planting transmission cases 32 and 32 are connected to an operation mechanism of a seedling planting device 5 described later. Further, the seedling supply device 4 of the right seedling seeding portion 1b (R) is attached to an upper frame 34 having a base fixed to the upper end portion of the seedling seeding portion mission case 30, and is attached to a bracket 35 fixed to the seeding transmission pipe 30a. The seedling supply device 4 of the left seedling planting section 1b (L) is attached to the upper frame 34 to which the base is fixed. Further, the two seedling mounting portions 1 are mounted on the upper end portion of the seedling mounting portion transmission case 30 and the seedling mounting frame 34 fixed to the bracket 35.
A seedling table 55 common to b and 1b is supported.

The seedling planting apparatus 5 is provided with a cup-shaped seedling planting tool 60 having a sharp lower end as shown in FIG. 4 which is an operation view from a side view and FIG. 5 which is a plan view. The seedling attachment 60 includes a front member 60a and a rear member 60b, and a front member rotation shaft 6 located behind the seedling attachment 60.
Front member mounting arm 62 rotatably supported by 1A
A, 62A are integrally attached with a front member 60a, and rear member mounting arms 62B, 62B rotatably supported by a rear member rotation shaft 61B located in front of the seedling planting tool 60.
The rear side member 60b is integrally attached to the rear side. Therefore, both members 60a, with the pivots 61A and 61B as fulcrums,
As the 60b rotates, the lower portions of the two members 60a, 60b open and close. Slots (not shown) formed in the front member mounting arm 62A and the rear member mounting arm 62B.
The front side member 60a and the rear side member 60b rotate in conjunction with each other by the interlocking pin 63 loosely fitted in.

Leg 62aA of front member mounting arm 62A
And between the leg 62aB of the rear member mounting arm 62B,
A spring 64 that urges the front member 60a and the rear member 60b toward the closing side is stretched. This seedling attachment 60
Performs a predetermined operation by the following operation mechanism.

A rear link support arm 67A is rotatably attached to a support portion 33a (FIG. 1) projecting upward from the second planting transmission case 32, and a rear link 68A having a base pivotally attached to the support arm 67A. At the rear end, the front member rotation shaft 6
1A is connected. In the middle part of the rear link 68A,
A rear link drive arm 69A provided at the rear end of the second planting transmission case 32 is connected. A front link support arm 67B is rotatably attached to the planting section transmission case 30, and a rear member rotation shaft 61B is connected to a rear end of a front link 68B whose base is pivotally attached to the support arm 67B. ing.

A front link drive arm 69 provided at the rear end of the first planting transmission case 31 is provided at an intermediate portion of the front link 68B.
B is connected. When the driving force of the engine 9 is transmitted via the transmission and the drive arms 69A and 69B rotate, the rear link 68A and the front link 68B swing up and down while changing the position of the base part back and forth, and The attachment 60 moves up and down with a fixed posture.

An opening / closing arm 71 is provided at the base of the rear link 68A.
Is rotatably mounted, and the front end of the opening / closing arm 71 and the front member mounting arm 62A are connected by an opening / closing rod 72. An opening / closing cam 73 that rotates integrally with the rear link drive arm 69A is attached to an intermediate portion of the rear link 68A. A roller 74 as a cam follower for the opening / closing cam 73 is provided on the opening / closing arm 71.

When the seedling attachment 60 rises from a position near the bottom dead center of its movement locus X (FIG. 1), the opening and closing cam 7
3 engages the roller 74. When the opening / closing cam 73 is engaged with the roller 74, the opening / closing rod 72 is pulled, and the front member 60a and the rear member 60b rotate so that their lower ends are opened in conjunction with each other. Opening / closing cam 7
When the roller 3 is not engaged with the roller 74, the lower ends of the front member 60a and the rear member 60b are closed by the tension of the spring 64.

The seedling attachment 60 moves along the trajectory indicated by the dashed line X in FIG. 1, and the seedling supply device 4 drops and supplies the seedling when it is at its top dead center. The supplied seedling is guided into the seedling planting tool 60 through a tubular seedling guide 76 attached to the front member rotating shaft 61A and the rear member rotating shaft 61B. The seedling attachment 60 holding the seedlings descends, and at the lower dead point of the locus indicated by the dashed line X, the lower part of the seedling attachment 60 pierces the topsoil portion of the ridge to form a hole for seedling transplantation. At substantially the same time, the lower ends of the front member 60a and the rear member 60b of the seedling attachment 60 are opened, and the held seedling is released into the seedling transplanting hole. The seedling attachment 60 rises as it is, and when it rises to near the top dead center, the seedling attachment 60 closes.

The second planting transmission case 32 is located on the left side of the planting plant 5. A tubular seedling guide 76 (FIG. 5) for guiding the seedlings falling above the seedling attaching tool 60 is attached integrally with the seedling attaching tool 60. The second planting transmission case 32 prevents the worker from interfering with the planting device 5 during the plant supply operation.

The frame construction of the seedling transplanter for double-row planting includes pipes 15, 17, 15a, 3
0a etc. and the main frame 14 which connects the handle 6 to the frame group.
b (L) is mounted on the main frame 1
4 and a monocoque frame in which a plate 111 is mounted on the frame 110, so that the frame structure of a lightweight double-row implanter can be obtained. Plate 111
Hex shafts 112a, 112b
Are provided, and the hexagonal shafts 112a, 112b
Is the center axis of rotation of the front link support arm 67B and the rear link support arm 67A of the seedling planting apparatus 5.

Further, by attaching the frame 110, a strong frame structure is obtained in which the main frame 14 is not likely to be twisted by the weight of the planting portion 1b. Further, since the front end of the frame 110 is attached to the support pipe 15a extending left and right to support the traveling wheel 2, the main frame 14, the front frame 13, and the support pipe 15 are provided.
The frame and the frame 110 constitute a frame-shaped frame in a plan view, and a strong frame configuration is obtained. Conventionally, the running portion and the seedling planting portion arranged in front and rear are supported near the main frame 14, respectively, so that the left and right treads of the running wheels 2, 3 are widened, and the seedling planting portion is provided on the left and right sides. With such a configuration, a large torsion torque is applied to a component near the main frame 14 to which the traveling section and the seedling planting section are connected, so that the component is easily twisted, and the planting depth, planting posture, or planting of the seedling is performed. The position may not be accurately and properly stabilized. However, the entire frame including the traveling portion and the seedling planting portion is integrally supported by the frame type frame structure of the present invention, and the strength of the frame structure of the entire body can be increased, and thus the seedling depth can be increased. The planting posture or the planting position can be accurately and appropriately stabilized.

The seedling supply device 4 includes a plurality of seedling supply cups 4.
Turntable 41 in which 0,... Are arranged at equal intervals on the circumference
It has. The turntable 41 is attached to a support plate 42 fixed to a turntable support frame 56 by a center shaft 4.
It is provided rotatably with 3 as a fulcrum. Center shaft 43
A ratchet wheel 45 that rotates in the same direction as the turntable 41 is attached to the ratchet arm 47. ing. The ratchet arm 47 and a seedling supply drive arm 49 that operates integrally with a front link support arm 67B described later are connected via a seedling supply drive rod 50.

When the supply drive arm 49 swings, the ratchet arm 47, which rotates integrally with the arm 49 about the central shaft 43, rotates in the direction indicated by R in FIG. The ratchet claw 46 that moves integrally rotates the ratchet wheel 45 through a tooth of the ratchet wheel 45 meshing with the ratchet claw 46 by a predetermined angle (in the direction of the arrow B in FIG. 3). ,...

At this time, the rotation of the ratchet arm 47 (in the direction of the arrow R in FIG. 3) causes the ratchet pawl 46 that moves together with the ratchet arm 47 to rotate about the shaft 46a and disengage from the meshing teeth of the ratchet wheel 45. The ratchet pawl 46 meshes with the teeth of the next ratchet wheel 45, and the turntable 41 stops (the ratchet wheel 45 and the turntable 41 move integrally, and the center shaft 4
3 and is rotatably supported. ).

In this manner, the seedling supply cups 40 rotate intermittently at intervals corresponding to the mounting interval of the seedling supply cups 40 in synchronization with the operation of the seedling planting apparatus 5. At the bottom of each seedling supply cup 40,... Are mounted shutters 52,. A C-shaped shutter closing rod 53 whose front side is slightly cut off to the left in plan view is provided at a height in contact with the bottom of the seedling supply cup, and a seedling supply position P corresponding to the cut portion of the shutter closing rod 53 is provided. Is opened by its own weight or the weight of the seedling, but the other seedling supply cups 4
The shutters 52,... Of 0,.

At the time of operation, the worker walks behind the rear wheel 2 on the left side in accordance with the progress of the machine body, and removes the pot seedlings of the seedling raising tray placed on the seedling placing table 55 into each seedling supply cup 4.
Replenish to 0, ... When the seedling supply cup 40 containing the seedlings is moved to the seedling supply position P by the rotation of the turntable 41, the shutter 52 is opened and the seedlings are placed in the seedling planting tool 6 of the seedling planting apparatus 5.
Fall into zero.

The double-row transplanter of the present embodiment includes a pair of seedling supply devices 4 and 4 and a seedling planting device 5 and 5, as shown in FIG. Table 4
The ratchet wheel 45 and the ratchet wheel 4 are provided only on one of the turntables 41a out of 1a and 41b.
A ratchet claw 46, a ratchet arm 47, and a seedling supply drive rod 50 that mesh with the teeth of No. 5 are provided, and the ratchet wheel 4 is mounted on the rotation shaft 43b of the other turntable 41b.
5b, ratchet pawl 46b and ratchet arm 47b
But the arm 115a fixed to the rotation shaft 43a on the side where the seedling supply drive rod 50 is provided is fixed to the rotation shaft 43b via the rod 116 interlocking with the arm 115a without mounting the seedling supply drive rod 50. Arm 1
15b. Both ends of the rod 116 are rotating shafts 43
a and 115b fixed to the arms 115a and 115b, respectively.
b is rotatably connected to the end.

Thus, the rotation shaft 43b on the turntable 41b side to which the seedling supply drive rod 50 is not attached.
The arm 115b fixed to the rotary shaft 43b rotates integrally with the rotating shaft 43b, and the arm 115b can sequentially rotate in conjunction with the rotation of the rotating shaft 43a on the turntable 41a side.

Accordingly, the pair of turntables 4 are linked with the movement of the seedling supply drive rod 50 on the turntable 41a side.
1a and 41b rotate simultaneously in the direction of arrow A (FIG. 2). At this time, the arms 115a, 1b of the rotating shafts 43a, 43b having the configuration shown in FIG. 6 (a plan view of the seedling transplanter).
15b, rod 116 and seedling supply drive rods 50a, 5a
When the interlocking mechanism by 0b is used, the left and right turntables 41a and 41b rotate in the directions of arrows B and A (FIG. 6), respectively. That is, the turntables 41a and 41b rotate inward each other.

In the configuration shown in FIG. 6, a ratchet wheel 45 fixed to the respective center shafts 43a, 43b of the left and right turntables 41a, 41b rotating in opposite directions.
ratchet pawls 46a, 46b meshing with teeth a, 45b
And the ratchet arm 47 are arranged symmetrically to each other.

As described above, the pair of turntables 41a,
The configuration in which the seedlings 41b rotate inward toward each other in the traveling direction of the transplanter allows the seedlings to be emptied past the positions Va and Vb where the seedlings are dropped from the seedling supply devices 4 and 4 to the seedling planting devices 5 and 5. Two workers can supply new seedlings to the empty cup 40 near the seedling supply cup 40 that has just become new, and the worker can turn the turntable 41 from the seedling mounting table 55.
The seedlings can be supplied to the empty seedling supply cup 40 with a margin within a wide range (the range of arrows C and D in FIG. 6) while the a and 41b are rotating.

The double-row transplanter of the present embodiment includes a pair of seedling supply devices 4 and 4 and seedling planting devices 5 and 5.
As shown in (a plan view of a main part of the seedling transplanter), only one of the turntables 41a and 41b of the pair of seedling supply devices 4 and 4 has the ratchet wheel 45.
Ratchet claw 46 and ratchet arm 47 meshing with teeth of ratchet wheel 45 and seedling supply drive rod 5
0, and the rotation shaft 43b of the other turntable 41b.
Arm 115b. An arm 115a fixed to a rotating shaft 43a to which a seedling supply drive rod 50 is attached, and a rod 11 having an end rotatably connected to the arm 115a.
6 and the arm 115b are linked. At this time, the ratchet wheel 45b, the ratchet pawl 46b, and the ratchet arm 47b are connected to the rotation shaft 43b so as to rotate in the opposite directions to the ratchet wheel 45a, the ratchet pawl 46a, and the ratchet arm 47a.

On the rotating shaft 43b on the turntable 41b side, the respective ends of the arm 115b rotating integrally with the rotating shaft 43b and the arm 115a rotating integrally with the rotating shaft 43a on the turntable 41a can be freely rotated by a rod. Connect to Therefore, the rotating shaft 4 having the configuration shown in FIG.
3a, 43b arms 115a, 115b and rod 1
When an interlocking mechanism using the drive rod 16 and the seedling supply drive rod 50 is used, the left and right turntables 41a and 41b rotate in the directions of arrows B and A, respectively.

When an interlocking mechanism using the arms and rods of the rotating shafts 43a and 43b having the structure shown in FIG. 7B is used, both the left and right turntables 41a and 41b rotate in the direction of arrow A. 6, 7 (a) and 7
In the rotation of the left and right turntables 41a and 41b in (b), the turntables 41a and 41b rotate in the rotation direction of the arrow shown in FIG. It is desirable.

As shown in the plan view of FIG. 8 and the perspective view of the main part of FIG. 9, a plurality of seedling supply cups (FIG. 8 shows an example having twenty seedling supply cups 40) as a turntable are elastically provided. A large number of seedlings are supplied to the seedling supply cup 40 by adopting a configuration of a seedling supply method (rotating sushi method) in which the two are connected to each other by a chain 120 made of a body and slide on a rectangular slide plate 121. And the seedling transplantation work can be performed very efficiently.

Each seedling supply cup 40 on the slide plate 121
Are connected by a chain 120 made of a stretchable elastic body, but cross-shaped to regulate the movement of the three seedling supply cups 40 along the side surfaces of the three seedling supply cups 40 located at both ends of the rectangular shape on the slide plate 121. , And a driven wheel 123 and a driven wheel 124 are provided. The driving wheels 123 are transmitted from the planting section transmission case 30 by a gear 126, a transmission chain 127, a sprocket 128, and a transmission chain 129 provided on the right side to transmit the engine driving force.

The transmission chain 129 is driven by a sprocket 128 connected to an electric chain 127 provided on the bottom surface of the slide plate 121. The transmission chain 129 is connected to a sprocket 130 provided on the rotation shaft of a cross-shaped drive wheel 123. It is driven by meshing.

Further, as shown in FIG. 9, the shutter 52 of the seedling supply cup 40 conveyed right above the seedling planting apparatus 5.
Is controlled by an opening / closing arm 132 provided in the seedling planting apparatus 5. When the seedling planting device 5 reaches the top dead center, the shutter opening / closing arm 132 moves the shutter 52 of the cup 40.
To receive the seedlings and temporarily put the supply cup 40
Stop the movement. Shutter 5 on opening / closing arm 132
2 comes into contact, the shutter 52 is opened and the cup 40
Fall into the seedling plant 5. Shutter 52
While the cup 40 is in contact with the opening / closing arm 132 and is opened, the movement of the cup 40 stops, but the elastic chain 120
The transfer of the other cups 40 is performed without delay due to the extension.

The shutter 52 of the seedling supply cup 40
Is in contact with the opening / closing arm 132 while the cup 40
Does not move, so that the seedlings in the cup 40 fall to the seedling planting device 5 without fail, so that seedling planting failure is eliminated. Also, as shown in the plan view of the seedling transplanter shown in FIG.
1 may be slightly larger than that shown in FIG. 1 and the like, and two rows of seedling supply cups 40 may be arranged on the concentric circle.

The opening / closing mechanism of the shutter of the cup 40 has the same structure as that described with reference to FIGS. 4 and 5 and the like. From the cups 40a and 40b, two seedlings each having one ridge can be simultaneously planted.

FIGS. 11 and 12 show a schematic plan view and a side view of a seedling transplanter for double planting. When the two seedling planting apparatuses 5 and 5 are simultaneously driven by the same drive shaft, the two seedling planting apparatuses 5 move along the locus X shown in FIG. Further, as shown in FIG. 11, the plurality of seedling supply cups 40 are supported in a horizontally long endless chain 135 extending in the lateral direction of the body and conveyed in a line.

Accordingly, one of the plurality of supply cups 40 transported with the two seedling planting apparatuses 5, 5 arranged in a line.
When the seedling supply cups 40a, 40b are arranged at the positions of the fourth and fourth seedling supply cups, and another kind of seedling is alternately supplied to the row of seedling supply cups 40,. Different types of seedlings can be planted in the strip.

When seedlings of the same type are planted by this seedling transplanter, even if there is a cup 40 to which some seedlings are not supplied, the seedlings can be planted by either planting device 5. As shown in FIG. 1, a pair of left and right pressure reduction wheels 80 are provided behind the seedling planting position. The pressure-reducing wheels 80, 80 are attached diagonally so that the lower part thereof becomes closer to each other, and are urged downward by a weight 81 loosely fitted to a rod 93. After rolling, the soil around the seedling transplanting hole after the seedlings were planted collapsed to refill the hole, and the trace was lightly crushed.

The rod 93 is connected to the main frame 1
4 is attached to the rear end of a swing frame 87 that is vertically swingably supported by a support frame 86 fixed to the front and rear intermediate portion. When the pressure-reducing wheels 80, 80 move up and down in accordance with the unevenness of the ridge surface, the grounding plate 28 detects the upper surface of the ridge by the vertical movement of the pressure-reducing wheels 80, 80, and the hydraulic valve via the sensing link mechanism 29. It is transmitted to an elevating hydraulic valve (not shown) in the unit 20 and operates the elevating cylinder 21 in a direction in which the angle of the swing frame 87 returns to its original position. This controls the vertical movement of the fuselage so that the height from the upper surface of the ridge to the fuselage is kept constant.

Further, a pressure-reducing wheel fixing lever 91 is rotatably supported at the rear portion of the main frame 14, and the pressure-reducing wheel fixing lever 90 fixes the pressure-reducing wheels 80, 80 at a position where the pressure-reducing wheels 80 are raised to a non-ground state. is there. Since the swing frame 87 is disposed on the right side of the body, an operator walking on the left side of the body does not come into contact with the swing frame 87, so that reliable pressure reduction can be performed and the body can be raised and lowered accurately. .

The steering handle 6 has a substantially U-shape in plan view with both ends extending rearward, and grips 6a, 6
a is attached. At the time of turning or traveling on the road, the operator grips the grips 6a, 6a and steers. The steering handle 6 is provided so as to be shifted to the right from the left and right center of the fuselage. Out of the way when doing

The side clutch levers 100, 100 are provided below the grips 6a, 6a. An operation panel 101 is provided at the base of the steering handle 6.
The operation panel 101 includes a seedling supply device 4 and a seedling planting device 5.
There are provided a planting elevating lever 102 for performing an on / off operation of the planting clutch and a lifting / lowering operation of the machine, and a main clutch lever 103 for performing an on / off operation of the main clutch.

A grounding body 90 that rotates up and down according to the unevenness of the ridge surface is attached to the main frame 14.
The movement of the ground contact body 90 is transmitted to the lifting hydraulic valve in the hydraulic valve unit 20 via the interlocking mechanism 88, and the lifting cylinder 21 is operated so that the body height with respect to the upper surface of the ridge becomes constant. This keeps the planting depth of the seedlings constant. When the attachment angle of the ground contact body 90 is changed by the planting depth adjusting lever 92, the planting depth of the seedling is adjusted.

The rolling hydraulic valve in the hydraulic valve unit 20 is switched in conjunction with the movement of the pendulum 95 for detecting the left and right inclination. When the body is inclined left and right, the rolling cylinder 27 is operated appropriately. Control the aircraft to return to the left and right horizontal.

When two seedling supplying devices 4 and seedling planting devices 5 are arranged in parallel in the seedling transplanting machine 1, two rows of seedlings can be planted on one ridge.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter according to an embodiment of the present invention.

FIG. 2 is a plan view of the seedling transplanter of FIG.

FIG. 3 is a plan view of a turntable of the seedling transplanter of FIG. 1;

FIG. 4 is a side view showing an exercise state of the seedling transplanting device of the seedling transplanter of FIG. 1;

FIG. 5 is a plan view of a seedling planting device of the seedling transplanter of FIG. 1;

FIG. 6 is a plan view of the seedling transplanter of FIG. 1;

FIG. 7 is a bottom view of the turntable of the seedling transplanter according to one embodiment of the present invention.

FIG. 8 is a plan view of the seedling transplanter according to one embodiment of the present invention.

FIG. 9 is a perspective view of the vicinity of a seedling supply device of the seedling transplanter of FIG. 8;

FIG. 10 is a plan view of a seedling transplanter according to one embodiment of the present invention.

FIG. 11 is a plan view of the seedling transplanter according to one embodiment of the present invention.

FIG. 12 is a side view of the seedling transplanter of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Seedling transplanter 1a Running part 1b Planting part 2 Rear wheel 3 Front wheel 4 Seedling supply device 5 Seedling planting device 6 Steering handle 6a Grip 7 Running part mission case 9 Engine 10 Hydraulic pump 11 Fuel tank 12 Bonnet 13 Connection frame 14 Main Frame 15 Rotating cylinder 16 Running transmission case 17 Front wheel support frame 17a Front wheel support shaft 17a Pivot shaft 18 Front wheel support rod 20 Hydraulic valve unit 21 Lifting cylinder 21a Piston rod 22 Balance rod 23 Mounting member 24 Guide shaft 25 Swing arm 26 Connecting rod 27 Rolling cylinder 28 Grounding plate 29 Sensing link mechanism 30 Planting part transmission case 30a Input shaft 31 First planting transmission case 32 Second planting transmission case 33a Supporting part 34 Upper frame 35 Bracket 40 Seedling Supply cup 41 Turntable 42 Support plate 43 Center axis 44 Reinforcement plate 45 Ratchet wheel 46 Ratchet pawl 47 Ratchet arm 48 Rod 49 Seedling supply driving arm 50 Seedling supply driving rod 52 Shutter (bottom) 53 Shutter closing rod (Opening restriction tool) 55 Seedling stand 56 Turntable support frame 60 Cup-shaped seedling planting tool 60a Front member 60b Rear member 61A Front member rotation shaft 61B Rear member rotation shaft 62A Front member mounting arms 62aA, 62aB Leg 62B Rear member mounting Arm 63 Interlocking pin 64 Spring 67A Rear link support arm 67B Front link support arm 68A Rear link 68B Front link 69A Rear link drive arm 69B Front link drive arm 71 Open / close arm 72 Open / close rod 73 Open / close cam 74 Roller 7 Seedling guide 80 Left and right pair of compression wheels 81 Weight 86 Support frame 87 Swing frame 88 Interlocking mechanism 90 Ground plate 91 Pressure reduction wheel fixing lever 92 Planting depth adjustment lever 93 Rod 95 Pendulum for detecting right and left inclination 100 Side clutch lever 101 Operation Panel 102 Planting elevating lever 103 Main clutch lever 110 Frame 111 Plate 112a, 112b
Hex shafts 115a, 115b Arm 116 Rod 120 Chain 121 Slide plate 123 Cross drive wheel 124 Cross drive wheel 126 Gear 127 Transmission chain 128 Sprocket 129 Transmission chain 130 Sprocket 132 Shutter opening / closing arm 135 Endless chain

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[Procedure amendment]

[Submission date] March 29, 2002 (2002.3.2.
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Seedling transplanter

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling transplanter for planting seedlings while propelling the body with a traveling propelling body such as wheels.

[0002]

2. Description of the Related Art As a seedling transplanter for vegetable seedlings, there is a configuration in which seedlings are planted on a ridge while the body is propelled by a traveling propelling body such as a wheel passing on both sides of the ridge. Many seedling transplanters of this type have a single-row planting configuration, but recently, a two-row seedling transplanter equipped with a seedling supply device and a seedling planting device that can plant two rows of seedlings in one ridge has been used. It has come to be.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a double-row seedling transplanter capable of efficiently performing a seedling transplantation operation.

[0004]

In order to solve the above problems, the present invention employs the following constitution. Claim 1
The invention comprises two seedling planting devices 5, 5 driven simultaneously.
And a plurality of seedlings for supplying seedlings to the two seedling planting apparatuses 5, 5.
Connect the supply cup 40 to the horizontally long endless
So that they can be transported in a line while being supported by the chain 135.
A seedling transplanter characterized by having been completed.

According to a second aspect of the present invention, the first and fourth seedling supply cups 40a among a plurality of supply cups 40 in which two seedling planting apparatuses 5, 5 are conveyed in a line. , 4
The seedling transplanter was characterized by being arranged at the position of 0b .

[0006]

Since the seedling transplanter is constructed as described above, it supplies a large number of seedlings to the seedling supply cup.
It can be planted in a row, and the seedling transplanting operation can be performed very efficiently.

[0007]

Embodiments of the present invention will be described with reference to the drawings. 1 to 11 are configuration diagrams of an example of the seedling transplanter of the present invention. The seedling transplanter 1 includes a traveling section 1a provided with traveling wheels 2, 2, 3, and 3 as traveling propulsion bodies, and two seedling transplanting sections 1b including a seedling supply device 4, a seedling transplanting device 5, and the like.
(L), 1b (R), and the seedling planting parts 1b, 1b,
The configuration is such that the vegetable seedling is planted on the upper surface of the ridge U in b. The operator appropriately steers the fuselage with the steering handle 6 provided at the rear of the fuselage, and during the planting operation, the seedling planting section 1.
The seedlings are supplied to the respective seedling supply devices 4 and 4 while walking on the side of b and 1b. Hereinafter, the configuration of each unit will be described.

The traveling section 1a includes a traveling section transmission case 7
The engine 9 is arranged in front of the vehicle. A hydraulic pump 10 driven by the power of the engine 9 is provided on the left side of the engine 9.
Is provided. A fuel tank 11 and the like are provided above the engine 9, and a bonnet 12 covers the upper side thereof. A front frame 13 having a rectangular shape in a side view is integrally provided on a rear portion of the traveling portion transmission case 7, and a front end portion of a main frame 14 connecting the traveling portion 1 a and the steering handle 6 is fixed to a right end portion on the rear surface of the front frame 13. Are linked. The main frame 14 is provided with the right seedling planting section 1b.
It extends backward below (R), curves obliquely upward on the way, and extends as it is to the rear position of the seedling planting portion 1b (R). The steering handle 6 is fixedly attached to the rear end.

From the left and right side surfaces of the traveling section transmission case 7, rotatable rear wheel transmission pipes 15L and 15R having a rear wheel transmission shaft inserted therein protrude left and right. The left rear wheel transmission pipe 15L is longer than the right rear wheel transmission pipe 15R. The vicinity of the distal ends of the rear wheel transmission pipes 15L and 15R is the front frame 1
3 are rotatably supported by bearings 15b, 15b attached to support pipes 15a, 15a fixed to the support pipes 15.
The traveling chain cases 16, 16 are integrally attached to the distal ends of the left and right rear wheel transmission pipes 15L, 15R, and drive wheels are attached to the rear wheel axles 2a, 2a provided at the distal ends of the traveling chain cases 16, 16. A certain rear wheel 2, 2 is attached. Power is transmitted from the traveling unit transmission case 7 to the rear wheel axles 2a, 2a via the shafts in the rear wheel transmission pipes 15L, 15R and the chains 16a, 16a in the traveling chain cases 16, 16.

On the lower side of the engine 9, a front wheel support pipe 1 is provided.
Reference numeral 7 is provided to be swingable about a pivot shaft 17a in the front-rear direction. The front wheel support pipe 17 has a portion on the left side of the pivot shaft 17a longer than that on the right side. The front wheel support pipe 17 is supported by an engine mounting base 8 provided below the engine 9. Front wheel support shafts 17a, 17a, 1
7a is slidably fitted, and its front wheel support shaft 17
Front wheel support rods 18, 18 are attached to the distal ends of the rods 17a, 17a so as to be adjustable in height, and the front wheels 3, 3, which are driven wheels, are pivotally supported at the lower ends of the rods.

The traveling portion 1a is provided with a body control mechanism for controlling the position of the body by moving the rear wheels 2, 2 up and down with respect to the body. The body control mechanism includes a lifting cylinder 21 provided rearward from a hydraulic valve unit 20 disposed on the traveling section transmission case 7.
A balance rod 22 is attached to the distal end of one piston rod 21a so as to be rotatable about a vertical axis. The front and rear ends of the piston rod 21a of the lifting cylinder 21 slide along a guide shaft 24 supported by the hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. Swing arm 2 fixed to left and right ends of balance rod 22 and rear wheel transmission pipes 15, 15
5 and 25 are connected via connecting rods 26 and 26. The left connecting rod 26 has a rolling cylinder 27 incorporated therein, and its length can be changed by expanding and contracting the cylinder 27.

The lifting cylinder 21 and the rolling cylinder 27 operate by controlling a hydraulic oil supplied from the hydraulic pump 10 by a control valve (not shown) in the hydraulic valve unit 20. By the expansion and contraction operation of the lifting cylinder 21, the left and right rear wheels 2, 2 move up and down by the same amount in the same direction with respect to the body, and the body is moved up and down. When the rolling cylinder 27 is extended and contracted, the right and left rear wheels 2 and 2 move up and down with respect to the body by the same amount in the opposite direction, and the body is inclined right and left.

The seedling planting sections 1b, 1b are arranged in parallel on the left and right, the right seedling planting section 1b (R) is located behind the traveling section transmission case 7 in plan view, and the left seedling planting section 1b (L). Is located on the left side. The two seedling planting portions 1b, 1b have substantially the same configuration. The lower part of the seedling plant transmission unit 30 transmitted from the traveling unit transmission case 7 is fixed to the upper surface of the front frame 13, and a planting transmission pipe 30 a is provided on the left side from the upper part of the seedling plant transmission case 7. Have been. The bases of the first planting transmission cases 31, 31 of the left and right seedling planting parts 1b, 1b are fixed to the planting transmission pipe 30a, respectively.
The base of the second planting transmission case 32 is fixedly attached to the front end of the first planting transmission case 32. The first planting transmission cases 31 and 31 and the second planting transmission cases 32 and 32 are connected to an operation mechanism of a seedling planting device 5 described later. Further, the seedling supply device 4 of the right seedling seeding portion 1b (R) is attached to an upper frame 34 having a base fixed to the upper end portion of the seedling seeding portion mission case 30, and is attached to a bracket 35 fixed to the seeding transmission pipe 30a. The seedling supply device 4 of the left seedling planting section 1b (L) is attached to the upper frame 34 to which the base is fixed. Further, the two seedling mounting portions 1 are mounted on the upper end portion of the seedling mounting portion transmission case 30 and the seedling mounting frame 34 fixed to the bracket 35.
A seedling table 55 common to b and 1b is supported.

The seedling planting apparatus 5 is provided with a cup-shaped seedling planting tool 60 having a sharp lower end as shown in FIG. 4 which is an operation view from a side view and FIG. 5 which is a plan view. The seedling attachment 60 includes a front member 60a and a rear member 60b, and a front member rotation shaft 6 located behind the seedling attachment 60.
Front member mounting arm 62 rotatably supported by 1A
A, 62A are integrally attached with a front member 60a, and rear member mounting arms 62B, 62B rotatably supported by a rear member rotation shaft 61B located in front of the seedling planting tool 60.
The rear side member 60b is integrally attached to the rear side. Therefore, both members 60a, with the pivots 61A and 61B as fulcrums,
As the 60b rotates, the lower portions of the two members 60a, 60b open and close. Slots (not shown) formed in the front member mounting arm 62A and the rear member mounting arm 62B.
The front side member 60a and the rear side member 60b rotate in conjunction with each other by the interlocking pin 63 loosely fitted in.

Leg 62aA of front member mounting arm 62A
And between the leg 62aB of the rear member mounting arm 62B,
A spring 64 that urges the front member 60a and the rear member 60b toward the closing side is stretched. This seedling attachment 60
Performs a predetermined operation by the following operation mechanism.

A rear link support arm 67A is rotatably attached to a support portion 33a (FIG. 1) projecting upward from the second planting transmission case 32, and a rear link 68A having a base pivotally attached to the support arm 67A. At the rear end, the front member rotation shaft 6
1A is connected. In the middle part of the rear link 68A,
A rear link drive arm 69A provided at the rear end of the second planting transmission case 32 is connected. A front link support arm 67B is rotatably attached to the planting section transmission case 30, and a rear member rotation shaft 61B is connected to a rear end of a front link 68B whose base is pivotally attached to the support arm 67B. ing.

A front link drive arm 69 provided at the rear end of the first planting transmission case 31 is provided at an intermediate portion of the front link 68B.
B is connected. When the driving force of the engine 9 is transmitted via the transmission and the drive arms 69A and 69B rotate, the rear link 68A and the front link 68B swing up and down while changing the position of the base part back and forth, and The attachment 60 moves up and down with a fixed posture.

An opening / closing arm 71 is provided at the base of the rear link 68A.
Is rotatably mounted, and the front end of the opening / closing arm 71 and the front member mounting arm 62A are connected by an opening / closing rod 72. An opening / closing cam 73 that rotates integrally with the rear link drive arm 69A is attached to an intermediate portion of the rear link 68A. A roller 74 as a cam follower for the opening / closing cam 73 is provided on the opening / closing arm 71.

When the seedling attachment 60 rises from a position near the bottom dead center of its movement locus X (FIG. 1), the opening / closing cam 7
3 engages the roller 74. When the opening / closing cam 73 is engaged with the roller 74, the opening / closing rod 72 is pulled, and the front member 60a and the rear member 60b rotate so that their lower ends are opened in conjunction with each other. Opening / closing cam 7
When the roller 3 is not engaged with the roller 74, the lower ends of the front member 60a and the rear member 60b are closed by the tension of the spring 64.

The seedling attachment 60 moves along the trajectory indicated by the dashed line X in FIG. 1, and the seedling supply device 4 drops and supplies the seedling when it is at its top dead center. The supplied seedling is guided into the seedling planting tool 60 through a tubular seedling guide 76 attached to the front member rotating shaft 61A and the rear member rotating shaft 61B. The seedling attachment 60 holding the seedlings descends, and at the lower dead point of the locus indicated by the dashed line X, the lower part of the seedling attachment 60 pierces the topsoil portion of the ridge to form a hole for seedling transplantation. At substantially the same time, the lower ends of the front member 60a and the rear member 60b of the seedling attachment 60 are opened, and the held seedling is released into the seedling transplanting hole. The seedling attachment 60 rises as it is, and when it rises to near the top dead center, the seedling attachment 60 closes.

The second planting transmission case 32 is located on the left side of the seedling planting device 5. A tubular seedling guide 76 (FIG. 5) for guiding the seedlings falling above the seedling attaching tool 60 is attached integrally with the seedling attaching tool 60. The second planting transmission case 32 prevents the worker from interfering with the planting device 5 during the plant supply operation.

The frame structure of the seedling transplanter for double-row planting comprises pipes 15, 17, 15a, 3
0a etc., and a main frame 14 which connects the handle 6 to the main body 14.
b (L) is mounted on the main frame 1
4 and a monocoque frame in which a plate 111 is mounted on the frame 110, so that the frame structure of a lightweight double-row implanter can be obtained. Plate 111
Hex shafts 112a, 112b
Are provided, and the hexagonal shafts 112a, 112b
Is the center axis of rotation of the front link support arm 67B and the rear link support arm 67A of the seedling planting apparatus 5.

Further, by attaching the frame 110, a strong frame structure is obtained in which the main frame 14 is not likely to be twisted by the weight of the planting portion 1b. Further, since the front end of the frame 110 is attached to the support pipe 15a extending left and right to support the traveling wheel 2, the main frame 14, the front frame 13, and the support pipe 15 are provided.
The frame and the frame 110 constitute a frame-shaped frame in a plan view, and a strong frame configuration is obtained. Conventionally, the running portion and the seedling planting portion arranged in front and rear are supported near the main frame 14, respectively, so that the left and right treads of the running wheels 2, 3 are widened, and the seedling planting portion is provided on the left and right sides. With such a configuration, a large torsion torque is applied to a component near the main frame 14 to which the traveling section and the seedling planting section are connected, so that the component is easily twisted, and the planting depth, planting posture, or planting of the seedling is performed. The position may not be accurately and properly stabilized. However, the entire frame including the traveling portion and the seedling planting portion is integrally supported by the frame type frame structure of the present invention, and the strength of the frame structure of the entire body can be increased, and thus the seedling depth can be increased. The planting posture or the planting position can be accurately and appropriately stabilized.

The seedling supply device 4 includes a plurality of seedling supply cups 4.
Turntable 41 in which 0,... Are arranged at equal intervals on the circumference
It has. The turntable 41 is attached to the support plate 42 fixed to the turntable support frame 56 by the center shaft 4.
It is provided rotatably with 3 as a fulcrum. Center axis 43
A ratchet wheel 45 that rotates in the same direction as the turntable 41 is attached to the ratchet arm 47. ing. The ratchet arm 47 and a seedling supply drive arm 49 that operates integrally with a front link support arm 67B described later are connected via a seedling supply drive rod 50.

When the supply drive arm 49 swings, the ratchet arm 47, which rotates integrally with the arm 49 about the central shaft 43, rotates in the direction of R in FIG. The ratchet claw 46 that moves integrally rotates the ratchet wheel 45 through a tooth of the ratchet wheel 45 meshing with the ratchet claw 46 by a predetermined angle (in the direction of the arrow B in FIG. 3). ,...

At this time, the rotation of the ratchet arm 47 (in the direction of arrow R in FIG. 3) causes the ratchet pawl 46 which moves together with the ratchet arm 47 to rotate about the shaft 46a and disengage from the meshing teeth of the ratchet wheel 45. The ratchet pawl 46 meshes with the teeth of the next ratchet wheel 45, and the turntable 41 stops (the ratchet wheel 45 and the turntable 41 move integrally, and the center shaft 4
3 and is rotatably supported. ).

In this manner, the seedling supply cups 40 rotate intermittently at intervals of the mounting interval of the seedling supply cups 40,. At the bottom of each seedling supply cup 40,... Are mounted shutters 52,. A C-shaped shutter closing rod 53 whose front side is slightly cut off to the left in plan view is provided at a height in contact with the bottom of the seedling supply cup, and a seedling supply position P corresponding to the cut portion of the shutter closing rod 53 is provided. Is opened by its own weight or the weight of the seedling, but the other seedling supply cups 4
The shutters 52,... Of 0,.

At the time of work, the worker walks behind the rear left wheel 2 in accordance with the progress of the machine body and removes the pot seedlings of the seedling raising tray placed on the seedling mounting table 55 into the respective seedling supply cups 4.
Replenish to 0, ... When the seedling supply cup 40 containing the seedlings is moved to the seedling supply position P by the rotation of the turntable 41, the shutter 52 is opened and the seedlings are moved to the seedling placement tool 6 of the seedling placement device 5.
Fall into zero.

The double-row transplanter according to the present embodiment includes a pair of seedling supply devices 4 and 4 and a seedling planting device 5 and 5, as shown in FIG. Table 4
The ratchet wheel 45 and the ratchet wheel 4 are provided only on one of the turntables 41a out of 1a and 41b.
A ratchet claw 46, a ratchet arm 47, and a seedling supply drive rod 50 that mesh with the teeth of No. 5 are provided, and the ratchet wheel 4 is mounted on the rotation shaft 43b of the other turntable 41b.
5b, ratchet pawl 46b and ratchet arm 47b
But the arm 115a fixed to the rotation shaft 43a on the side where the seedling supply drive rod 50 is provided is fixed to the rotation shaft 43b via the rod 116 interlocking with the arm 115a without mounting the seedling supply drive rod 50. Arm 1
15b. Both ends of the rod 116 are rotating shafts 43
a and 115b fixed to the arms 115a and 115b, respectively.
b is rotatably connected to the end.

Thus, the rotation shaft 43b on the turntable 41b side to which the seedling supply drive rod 50 is not attached is provided.
The arm 115b fixed to the rotary shaft 43b rotates integrally with the rotating shaft 43b, and the arm 115b can sequentially rotate in conjunction with the rotation of the rotating shaft 43a on the turntable 41a side.

Accordingly, the pair of turntables 4 are linked with the movement of the seedling supply drive rod 50 on the turntable 41a side.
1a and 41b rotate simultaneously in the direction of arrow A (FIG. 2). At this time, the arms 115a, 1b of the rotating shafts 43a, 43b having the configuration shown in FIG. 6 (a plan view of the seedling transplanter).
15b, rod 116 and seedling supply drive rods 50a, 5a
When the interlocking mechanism by 0b is used, the left and right turntables 41a and 41b rotate in the directions of arrows B and A (FIG. 6), respectively. That is, the turntables 41a and 41b rotate inward each other.

In the configuration shown in FIG. 6, a ratchet wheel 45 fixed to the respective center shafts 43a, 43b of the left and right turntables 41a, 41b rotating in opposite directions.
ratchet pawls 46a, 46b meshing with teeth a, 45b
And the ratchet arm 47 are arranged symmetrically to each other.

As described above, the pair of turntables 41a,
The configuration in which the seedlings 41b rotate inward toward each other in the traveling direction of the transplanter allows the seedlings to be emptied past the positions Va and Vb where the seedlings are dropped from the seedling supply devices 4 and 4 to the seedling planting devices 5 and 5. Two workers can supply new seedlings to the empty cup 40 near the seedling supply cup 40 that has just become new, and the worker can turn the turntable 41 from the seedling mounting table 55.
The seedlings can be supplied to the empty seedling supply cup 40 with a margin within a wide range (the range of arrows C and D in FIG. 6) while the a and 41b are rotating.

The double-row transplanter according to the present embodiment includes a pair of seedling supply devices 4 and 4 and seedling planting devices 5 and 5.
As shown in (a plan view of a main part of the seedling transplanter), only one of the turntables 41a and 41b of the pair of seedling supply devices 4 and 4 has the ratchet wheel 45.
Ratchet claw 46 and ratchet arm 47 meshing with teeth of ratchet wheel 45 and seedling supply drive rod 5
0, and the rotation shaft 43b of the other turntable 41b.
Arm 115b. An arm 115a fixed to a rotating shaft 43a to which a seedling supply drive rod 50 is attached, and a rod 11 having an end rotatably connected to the arm 115a.
6 and the arm 115b are linked. At this time, the ratchet wheel 45b, the ratchet pawl 46b, and the ratchet arm 47b are connected to the rotation shaft 43b so as to rotate in the opposite directions to the ratchet wheel 45a, the ratchet pawl 46a, and the ratchet arm 47a.

On the rotating shaft 43b on the turntable 41b side, the respective ends of the arm 115b rotating integrally with the rotating shaft 43b and the arm 115a rotating integrally with the rotating shaft 43a on the turntable 41a are rotatable with rods. Connect to Therefore, the rotating shaft 4 having the configuration shown in FIG.
3a, 43b arms 115a, 115b and rod 1
When an interlocking mechanism using the drive rod 16 and the seedling supply drive rod 50 is used, the left and right turntables 41a and 41b rotate in the directions of arrows B and A, respectively.

When an interlocking mechanism using the arms and rods of the rotating shafts 43a and 43b having the structure shown in FIG. 7B is used, both the left and right turntables 41a and 41b rotate in the direction of arrow A. 6, 7 (a) and 7
In the rotation of the left and right turntables 41a and 41b in (b), the case where the turntables 41a and 41b rotate in the rotation direction of the arrow shown in FIG. It is desirable.

As shown in the plan view of FIG. 8 and the perspective view of the essential part of FIG. 9, a plurality of seedling supply cups (FIG. 8 shows an example in which there are 20 seedling supply cups 40) as a turntable. A large number of seedlings are supplied to the seedling supply cup 40 by adopting a configuration of a seedling supply method (rotating sushi method) in which the two are connected to each other by a chain 120 made of a body and slide on a rectangular slide plate 121. And the seedling transplantation work can be performed very efficiently.

Each seedling supply cup 40 on the slide plate 121
Are connected by a chain 120 made of a stretchable elastic body, but cross-shaped to regulate the movement of the three seedling supply cups 40 along the side surfaces of the three seedling supply cups 40 located at both ends of the rectangular shape on the slide plate 121. , And a driven wheel 123 and a driven wheel 124 are provided. The driving wheels 123 are transmitted from the planting section transmission case 30 by a gear 126, a transmission chain 127, a sprocket 128, and a transmission chain 129 provided on the right side to transmit the engine driving force.

The transmission chain 129 is driven by a sprocket 128 connected to an electric chain 127 provided on the bottom of the slide plate 121, and the transmission chain 129 is connected to a sprocket 130 provided on the rotating shaft of a cross-shaped drive wheel 123. It is driven by meshing.

Further, as shown in FIG. 9, the shutter 52 of the seedling supply cup 40 conveyed right above the seedling planting device 5.
Is controlled by an opening / closing arm 132 provided in the seedling planting apparatus 5. When the seedling planting device 5 reaches the top dead center, the shutter opening / closing arm 132 moves the shutter 52 of the cup 40.
To receive the seedlings and temporarily put the supply cup 40
Stop the movement. Shutter 5 on opening / closing arm 132
2 comes into contact, the shutter 52 is opened and the cup 40
Fall into the seedling plant 5. Shutter 52
While the cup 40 is in contact with the opening / closing arm 132 and is opened, the movement of the cup 40 stops, but the elastic chain 120
The transfer of the other cups 40 is performed without delay due to the extension.

The shutter 52 of the seedling supply cup 40
Is in contact with the opening / closing arm 132 while the cup 40
Does not move, so that the seedlings in the cup 40 fall to the seedling planting device 5 without fail, so that seedling planting failure is eliminated. Also, as shown in the plan view of the seedling transplanter shown in FIG.
1 may be slightly larger than that shown in FIG. 1 and the like, and two rows of seedling supply cups 40 may be arranged on the concentric circle.

The opening and closing mechanism of the shutter of the cup 40 has the same structure as that described with reference to FIGS. 4 and 5 and the like. From the cups 40a and 40b, two seedlings each having one ridge can be simultaneously planted.

[0043] FIG. 11 and FIG. 12 shows a schematic plan view and a side view of a seedling transplantation machine for Nijo planting. 2 on the same drive shaft at the same time
When the two seedling planting apparatuses 5 are driven, the two seedling planting apparatuses 5 move along a locus X shown in FIG. Further, as shown in FIG. 11, the plurality of seedling supply cups 40 are supported in a horizontally long endless chain 135 extending in the lateral direction of the body and conveyed in a line.

Accordingly, one of a plurality of supply cups 40, which are transported with the two seedling planting apparatuses 5, 5 arranged in a line, are provided.
When the seedling supply cups 40a, 40b are arranged at the positions of the fourth and fourth seedling supply cups, and another kind of seedling is alternately supplied to the row of seedling supply cups 40,. Different types of seedlings can be planted in the strip.

When seedlings of the same type are planted by this seedling transplanter, even if there is a cup 40 to which some seedlings are not supplied, the seedlings can be planted by either planting device 5. As shown in FIG. 1, a pair of left and right pressure reduction wheels 80 are provided behind the seedling planting position. The pressure-reducing wheels 80, 80 are attached diagonally so that the lower part thereof becomes closer to each other, and are urged downward by a weight 81 loosely fitted to a rod 93. After rolling, the soil around the seedling transplanting hole after the seedlings were planted collapsed to refill the hole, and the trace was lightly crushed.

The rod 93 is connected to the main frame 1
4 is attached to the rear end of a swing frame 87 that is vertically swingably supported by a support frame 86 fixed to the front and rear intermediate portion. When the pressure-reducing wheels 80, 80 move up and down in accordance with the unevenness of the ridge surface, the grounding plate 28 detects the upper surface of the ridge by the vertical movement of the pressure-reducing wheels 80, 80, and the hydraulic valve via the sensing link mechanism 29. It is transmitted to an elevating hydraulic valve (not shown) in the unit 20 and operates the elevating cylinder 21 in a direction in which the angle of the swing frame 87 returns to its original position. This controls the vertical movement of the fuselage so that the height from the upper surface of the ridge to the fuselage is kept constant.

Further, a pressure-reducing wheel fixing lever 91 is rotatably supported at the rear portion of the main frame 14, and the pressure-reducing wheel fixing lever 90 fixes the pressure-reducing wheels 80, 80 at a position where the pressure-reducing wheels 80, 80 are raised to a non-ground state. is there. Since the swing frame 87 is disposed on the right side of the body, an operator walking on the left side of the body does not come into contact with the swing frame 87, so that reliable pressure reduction can be performed and the body can be raised and lowered accurately. .

The steering handle 6 has a substantially U-shape in plan view with both ends extending rearward, and has grips 6a, 6
a is attached. At the time of turning or traveling on the road, the operator grips the grips 6a, 6a and steers. The steering handle 6 is provided so as to be shifted to the right from the left and right center of the fuselage. Out of the way when doing

Side clutch levers 100, 100 are provided below the grips 6a, 6a. An operation panel 101 is provided at the base of the steering handle 6.
The operation panel 101 includes a seedling supply device 4 and a seedling planting device 5.
There are provided a planting elevating lever 102 for performing an on / off operation of the planting clutch and a lifting / lowering operation of the machine, and a main clutch lever 103 for performing an on / off operation of the main clutch.

The main frame 14 is provided with a grounding member 90 that rotates up and down according to the unevenness of the ridge.
The movement of the grounding body 90 is transmitted to the elevating hydraulic valve in the hydraulic valve unit 20 via the interlocking mechanism 88, and operates the elevating cylinder 21 so that the body height with respect to the upper surface of the ridge becomes constant. This keeps the planting depth of the seedlings constant. When the attachment angle of the ground contact body 90 is changed by the planting depth adjusting lever 92, the planting depth of the seedling is adjusted.

The rolling hydraulic valve in the hydraulic valve unit 20 is switched in conjunction with the movement of the pendulum 95 for detecting the left and right inclination. When the body inclines left and right, the rolling cylinder 27 is operated as appropriate. Control the aircraft to return to the left and right horizontal.

When two seedling supply devices 4 and seedling planting devices 5 are arranged side by side in the seedling transplanter 1, two rows of seedlings can be planted on one ridge.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter according to an embodiment of the present invention.

FIG. 2 is a plan view of the seedling transplanter of FIG.

FIG. 3 is a plan view of a turntable of the seedling transplanter of FIG. 1;

FIG. 4 is a side view showing an exercise state of the seedling transplanting device of the seedling transplanter of FIG. 1;

FIG. 5 is a plan view of a seedling planting device of the seedling transplanter of FIG. 1;

FIG. 6 is a plan view of the seedling transplanter of FIG. 1;

FIG. 7 is a bottom view of the turntable of the seedling transplanter according to one embodiment of the present invention.

FIG. 8 is a plan view of the seedling transplanter according to one embodiment of the present invention.

FIG. 9 is a perspective view of the vicinity of a seedling supply device of the seedling transplanter of FIG. 8;

FIG. 10 is a plan view of a seedling transplanter according to one embodiment of the present invention.

FIG. 11 is a plan view of the seedling transplanter according to one embodiment of the present invention.

FIG. 12 is a side view of the seedling transplanter of FIG.

[Description of Signs] 1 seedling transplanter 1a running unit 1b planting unit 2 rear wheel 3 front wheel 4 seedling supply device 5 seedling planting device 6 steering handle 6a grip 7 running unit transmission case 9 engine 10 hydraulic pump 11 fuel tank 12 bonnet DESCRIPTION OF SYMBOLS 13 Connection frame 14 Main frame 15 Rotating cylinder part 16 Travel transmission case 17 Front wheel support frame 17a Front wheel support shaft 17a Pivot shaft 18 Front wheel support rod 20 Hydraulic valve unit 21 Lifting cylinder 21a Piston rod 22 Balance rod 23 Mounting member 24 Guide shaft 25 Swing arm 26 Connecting rod 27 Rolling cylinder 28 Ground plate 29 Sensing link mechanism 30 Planting section transmission case 30a Input shaft 31 First planting transmission case 32 Second planting transmission case 33a Support section 34 Upper frame 35B Ket 40 Seedling supply cup 41 Turntable 42 Support plate 43 Center axis 44 Reinforcement plate 45 Ratchet wheel 46 Ratchet claw 47 Ratchet arm 48 Rod 49 Seedling supply drive arm 50 Seedling supply drive rod 52 Shutter (bottom) 53 Shutter closing rod (Opening restriction) 55) Seedling platform 56 Turntable support frame 60 Cup-shaped seedling planting tool 60a Front member 60b Rear member 61A Front member rotation shaft 61B Rear member rotation shaft 62A Front member mounting arms 62aA, 62aB Leg 62B Side member mounting arm 63 Interlocking pin 64 Spring 67A Rear link support arm 67B Front link support arm 68A Rear link 68B Front link 69A Rear link drive arm 69B Front link drive arm 71 Open / close arm 72 Open / close rod 73 Open / close cam 74 Roller 76 Seedling guide 80 Left and right pair of compression wheels 81 Weight 86 Support frame 87 Swing frame 88 Interlocking mechanism 90 Ground plate 91 Pressure reduction wheel fixing lever 92 Planting depth adjustment lever 93 Rod 95 Pendulum for detecting right and left inclination 100 Side clutch Lever 101 Operation panel 102 Planting elevating lever 103 Main clutch lever 110 Frame 111 Plate 112a, 112b
Hex shafts 115a, 115b Arm 116 Rod 120 Chain 121 Slide plate 123 Cross drive wheel 124 Cross drive wheel 126 Gear 127 Transmission chain 128 Sprocket 129 Transmission chain 130 Sprocket 132 Shutter opening / closing arm 135 Endless chain

Claims (1)

[Claims] A first and a fourth supply cups (40) which are transported in a line with two seedling planting apparatuses (5, 5).
A seedling transplanter, which is arranged at the positions of the second seedling supply cups 40a and 40b.