JPH0731232A - Seedling feeder in transplanter - Google Patents

Abstract

PURPOSE:To provide a seedling feeder in a transplanter ensuring seedlings to be packed on a seedling box basis, designed to set many seedling boxes at a time, leading to saving labors for replenishing seedling boxes as well as improving working efficiency. CONSTITUTION:The objective seedling feeder is equipped with (A) a seedling box conveying section 14 so designed that seedling boxes are conveyed from above downward along a specified route, and at an appropriate position along the conveying route, seedling are extruded from these seedling boxed, (B) a seedling box guide section 12 formed above the section 14 and designed to guide in a specified direction the seedling boxes suspended nearly vertically from a hanger, and (C) a seedling box delivery section 13 designed to deliver the seedling boxes brought above the section 14 by the section 12 to the seedling box conveying section 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling supply device for a transplanter, which is designed to be loaded with seedlings together with a seedling box.

[0002]

2. Description of the Related Art Seedlings raised in a flexible seedling box in which a plurality of pots are arranged side by side are loaded in the planting section together with the seedling box, and the seedling box is transported along a predetermined transport route. , A rice transplanter configured to push a seedling out of a pot of a seedling box at an appropriate position on the transportation route and supply the seedling to a seedling picking position of an implanting rod has been put into practical use.

In this type of rice transplanter, a slanting slanted trapezoidal seedling box supply section is connected to the starting end side of the seedling box transport section, and the seedling box transport section is loaded with seedling boxes. Start the work by placing the seedling box on the seedling box feeding section, and as the seedling box is transported through the seedling box feeding section, the seedling boxes on the seedling box feeding section are sequentially fed to the seedling box feeding section by its own weight. It was supposed to be done. However, if the seedling box is placed on the seedling box supply section in a lying state, only two seedling boxes can be set per one side of the seedling box supply section, and the seedling box is frequently replenished. I had to.

Further, in order to set a large number of seedling boxes in the seedling box supply section, the surfaces on which the seedling box is placed are provided in parallel in the lateral direction, and the seedling box supply section is slid in the lateral direction as appropriate. A structure in which the seedling boxes are sequentially supplied to the seedling box transport section has also been developed. However, with such a configuration, the position of the center of gravity shifts to the left and right, and there is a problem that the weight balance is likely to shift.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a seedling feeding device which can set a large number of seedling boxes at one time and which has a stable weight balance.

[0006]

In order to solve the above problems, the present invention has the following constitution. That is, the seedling supply device of the transplanting machine according to the present invention, while transporting the seedling box from the top along the predetermined transport path, a seedling box transporting section that pushes out the seedlings from the seedling box at an appropriate position of the transport path, A seedling box supply unit that is provided above the seedling box transport unit and guides the seedling box that is suspended in a substantially vertical state in a predetermined direction, and has been sent above the seedling box transport unit by the seedling box supply unit. The present invention is characterized in that a seedling box delivery section for delivering the seedling box to the seedling box transport section is provided.

[0007]

[Operation] A seedling box is set in the seedling box supply section in a state of being vertically suspended by using an appropriate hanger. By vertically suspending the seedling box, much more seedling boxes can be set at the same time in the same space as compared to placing the seedling box in a lying state. The number of times is small. The seedling box hung from the seedling box supply section is sent in a predetermined direction, and the seedling box that has reached just above the seedling box transport section is delivered to the seedling box transport section by the seedling box delivery section. The seedling box delivered to the seedling box transport unit is transported from top to bottom along a predetermined transport path, and the seedlings are extruded from the seedling box during the transport.

[0008]

1 to 30 show an embodiment of the present invention. This transplanter 1 is a main unit 2 which is a four-wheeled vehicle.
A planting section 3 for 6-row planting and a fertilizer applicator 4 are attached to the plant, which is configured as a riding-type fertilizer rice transplanter as a whole. Planting part 3
Is attached to a parallel link type planting part attachment device 5 provided at the rear part of the machine 2, and can be raised and lowered with respect to the machine 2.
The planting part mounting device 5 is moved up and down by the hydraulic cylinder 6.

The planting section 3 is roughly divided into a transmission case 8 having a built-in drive mechanism for driving each section of the planting section, and a seedling feeding device 9 for feeding seedlings one by one to a predetermined seedling picking position.
And the planting devices 10 for the number of planting rows for planting the seedlings supplied to the seedling collecting position on the surface of the paddy field.

Further, the seedling feeding device 9 delivers a seedling box feeding section 12 for guiding the seedling box in a predetermined direction in a vertically suspended state and a seedling box sent to a predetermined position by the seedling box feeding section downward. Seedling box delivering section 13, seedling box delivering section 14 for delivering the seedling box received from the seedling box delivering section from top to bottom, empty box returning section 15 for returning the empty box after pushing out the seedlings to a predetermined collecting section,
A seedling pushing device 16 for pushing seedlings out of the seedling box being transported through the seedling box carrying section 14, a seedling delivery device 17 for carrying the seedlings pushed out by the seedling pushing device downward, and a seedling dropping device for assisting the seedling delivery device. 18, a seedling transfer belt 19 for transferring the seedlings received from the seedling transfer device 17 to the seedling picking position of the planting device 12.

The seedling box used has the structure shown in FIGS. The seedling feeder 9 of this rice transplanter is of a system in which it is set together with the seedling box, and the seedling box 300 is integrally formed of a flexible synthetic resin material so that it can be transported along a curved transport path. That is, in the seedling box 300, seedling raising pots 301, ... Opening to the top are arranged in a matrix in a vertical and horizontal direction, and three radial slits 30 are provided at the bottom of each pot.
Seedling extrusion hole 303 having 2 is formed. The seedling extrusion hole 303 also serves as drainage. The longitudinal direction is vertical,
When the direction orthogonal to it is defined as the horizontal direction, the pot interval is a constant pitch p in the vertical direction, and in the horizontal direction, a boundary portion 306 having a wide interval between the pots is provided in the center portion, and a horizontal portion 1 is provided on both sides thereof. Same number per row (eg 7
Pots are arranged at equal intervals. Therefore, the seedling-growing pots are divided into left and right groups with the strip-shaped boundary portion 306 interposed therebetween. Left and right edges of the seedling box are guide ears 307, and claw holes 308 having a square shape in plan view are formed at the ears at the same pitch as the vertical pitch p of the pot. A tip portion 309 of the ear portion 307 is bent downward at a substantially right angle. The seedling box 300 is formed thin throughout and has flexibility in the front-rear direction and the left-right direction. Floor soil is put in the pots 301, ..., Seeded, and grown until the grown seedlings 310 have a certain size.

Each part of the planting part 3 will be described below.

The seedling box supply section 12 is provided with a hanger rail 20 which is inclined so that the front part thereof is in a higher position, and a pair of left and right side rails 21 and 21. These rails 20, 21, 2
1 is supported by a rear view gate-shaped support column 22, 22. The seedling box 300 is hung on a hanger 280 to be described later, the hanger is hooked on the hanger rail 20, and the seedling box 300 is sent from the front to the back by its own weight. At that time, seedling box 30
Side rails 21 and 21 prevent the lower part of 0 from swinging to the left and right. A portion 20a of the hanger rail 20 ahead of the seedling box delivery position A is bent obliquely forward to guide the hanger 280 with the seedling box removed to the collection box 23.

The hanger has the structure shown in FIGS. 31 to 33. That is, a hook member 281 having an arcuate upper portion for hooking on the hanger rail 20 is provided,
In the lower part of the hook member, the first clip 282 that holds the boundary 306 of the seedling box and the bottoms of the plurality (for example, four) pots 301, ... A second clip 283 is provided. The second clip 283 is attached to the base plate 285 by a hinge 286, and is biased by a torque spring 287 in a direction to sandwich the pots 301, .... The opening operation of the second clip 283 is performed by the finger contact portion 283a of the second clip 283 and the finger contact portion 28 of the base plate 285.
5a is sandwiched between two fingers. When the hanger 280 is hooked on the hanger rail 20, the hook member 281
The non-rotating plate 289 fixed to the hanger rail 2
The hanger 280 is prevented from rotating in a horizontal plane by abutting on the side surface portion of No. 0.

Further, a spacer plate 290 fixed to the side surface portion of the hook member 281 and a spacer rod 291 fixed to the spacer plate by protruding forward are provided as members for keeping the interval between the hangers constant. There is. The spacer plate 290 has a hole 293 in the center.
The upper portion 293a of the hole is narrowed so that the spacer rod 291 just fits. The spacer rod 291 has a tip portion 291a bent upward, and locking portions 291bb, 291b project left and right from positions slightly rearward of the tip bent portion. The widths of both ends of these left and right locking portions are wider than the width of the main body portion of the hole 293.

When a plurality of seedling boxes hung on the hanger 280 are set on the hanger rail 20, the front and rear hangers have different heights, so that the tip bent portion 291a of the spacer rod 291 of the preceding hanger 280 (1) is rearward. It is in a state of being inserted into the hole 293 of the hanger 280 (2) of the row. The locking parts 291b and 291b are locked to the spacer plate 290, the two hangers 280 (1, 2) do not come closer to each other, and the interval between the seedling boxes suspended in the seedling box supply part 12 is kept constant. Be drunk

When the two hangers are placed at the same height, as shown in FIG. 34, the distal end portion 291a of the spacer rod of the right hanger 280 (1) has the left hanger 280.
The upper part 29 of the hole 293 of the spacer plate 290 of (2)
Since it comes to be fitted to 3a and both hangers are connected, it is possible to have two seedling boxes at the same time, which is convenient for transportation.

The seedling box delivery section 13 is provided with a fixed fence 24 and a rotating fence 25 which support the seedling box moved right above the seedling box transfer section 14 by sandwiching it from the front and rear. The fixed fence 24 is provided on both left and right sides to receive the ears 307 of the seedling box 300 from the rear, and a vertically long rectangular opening 24a is formed in the lower part of the fixed fence. The swing fence 25 is rotatably supported around the swing center shaft 26, and appropriately operates in the open state shown in FIG. 10 and the closed state shown in FIG. 11. The swinging fence 25 is a main body 25a that abuts the bottom surface of the pot of the seedling box in the closed state.
And an ear pressing member 25b that comes into contact with the ear portion 307 from the front in the closed state, and a stopper 25c for preventing the next seedling box from approaching more than necessary when in the closed state.

Since the opening / closing operation of the rotating fence 25 is linked with the seedling box feeding operation described later, its driving mechanism will be described in the section of the seedling box feeding device.

Further, behind the fixed fences 24, 24, there is provided a seedling scattering prevention cover 27 for preventing the seedlings from slipping out of the pot of the seedling box stopped at the delivery position A by inertia.

As shown in FIG. 38, the seedling scattering prevention cover 27 is attached to the attachment piece 27a fixed to the fixed fence 24 by the butterfly bolt 27b, and the hole 27c through which the butterfly bolt is inserted is made a long hole in the front-rear direction. The mounting position of the seedling scattering prevention cover 27 can be adjusted according to the seedling height.

As shown in FIG. 39, if the seedling scattering prevention cover 27 is attached to the attachment piece 27a via the spring 27d, a shock can be absorbed when the seedling leaves hit the cover 27.

The seedling box carrying section 14 is provided with guide ears 28, 28 provided on both sides of the seedling box carrying path so that the ears 307,
The seedling box 300 is vertically guided while sandwiching 307. In the lower part of the guide fences 28, 28, vertically long rectangular openings 28a, 28a are formed. The lower part of the seedling box carrying section 14 is a seedling pushing position B where the seedlings are pushed out from the pot of the seedling box.

The seedling box delivery section 13 and the seedling box transport section 14 are
The seedling box feeding device shown in FIGS. 7 to 9 is provided.

Reference numeral 30 denotes a feed claw, which is inserted into the opening 28a of the guide fence 28 from the rear side and has a claw portion 30a which engages with the lower wall surface of the claw hole 308 of the seedling box at the upper end portion.
The feed claw 30 is attached to a roller shaft 33 provided at the tip of the lower crank arm 32 in a state of being biased toward the seedling box path side via a torque spring 34, and the lower crank arm 32 supports a support shaft 36. It is designed to move up and down as it swings around the center. When the feeding claw 30 is at the lower limit position, the claw portion 30a is set to be located at the seedling pushing position B. The lower crank arm 42 is driven via the seedling feeding rod 38.

A stop claw 40 has a claw portion 40a which is inserted from the rear into the opening 28a of the guide fence 28 and engages with the upper wall surface of the claw hole 308 of the seedling box. This stop claw 40
Is rotatably supported by a support shaft 41, and the lower end thereof slidably contacts the roller shaft 33. For this reason,
When the lower crank arm 32 rotates upward, the lower portion 40b of the stopper claw 40 is pushed backward, so that the stopper claw 40 is disengaged from the claw hole 308. Further, when the lower portion 40b is pushed backward by a certain amount or more, the stopper claw 40 causes the engaging portion 3 of the feed claw to move.
0b and the feed claw 30 is disengaged from the claw hole 308.

Reference numeral 43 is a leaf spring brake, and its hook portion 4
The engagement of 3a with the claw hole 308 serves to prevent the seedling box from dropping due to its own weight.

Reference numeral 45 is a blocking claw, and a claw portion 45a that engages with the upper wall surface of the claw hole 308 of the seedling box is formed at the upper end portion.
The blocking claw 45 is pivotally supported by a slide member 47 by a support shaft 46 so as to be swingable in the front-rear direction, and is biased rearward by a torque spring 49. Vertical holes 54 are formed in the slide member 47, and upper and lower stopper pins 55 and 56 fixed to the guide fence 28 are fitted in the vertical holes 54. A tension spring 58 is attached to the upper end of the slide member 47. Therefore, the blocking claw 45
Is slidable up and down within a range in which the upper and lower ends of the elongated hole 54 are engaged with the stopper pins 55 and 56, and is normally pulled up to the upper limit position by the tension spring 58.

Further, the interlocking arm 50 is integrally provided on the blocking claw 45, and when the blocking claw 45 is at the lower limit position,
Shut-off release pin 5 interlocked with seedling push-out pin 100, ...
1 pushes the interlocking arm 50 rearward and rotates the blocking claw 45 forward.

Reference numeral 60 denotes a drop-out claw, which is inserted from the rear into the opening 24a of the fixed fence 24 and engages with the lower wall surface of the claw hole 308 of the nursery box and the claw hole 3 at the lower end of the nursery box.
A protruding portion 60b is formed so as to restrict the claw portion 60a from engaging only with 08. Similar to the feed claw 30, the drop-out claw 60 is attached to a shaft 63 provided at the tip of the upper crank arm 62 with a torque spring 64 urged toward the seedling box path side. As the arm 62 swings around the support shaft 66, it moves up and down.

The withdrawal claw 60 is configured to interlock with the feed claw 30, and the upper end engaging portion 67a of the interlocking rod 67 whose lower end is connected to the lower crank arm 32 is connected to the interlocking pin 68 provided on the upper crank arm 62. It can be engaged and disengaged freely. The interlocking rod 67 is loosely fitted on the hook 45b of the blocking claw 45, and the interlocking rod 67 and the interlocking pin 68 are engaged / disengaged in association with the swing of the blocking claw 45.

As an opening / closing mechanism of the rotating fence 25, a torque spring 70 for urging the rotating fence 25 in the opening direction is provided, and a closing operation member that engages with the closing operation arm portion 62a of the upper crank arm 62. 71 is fixed to the lower part of the swing fence 25.

Further, the rotating fence 25 is provided with a lock claw 74 which can be engaged with the locking portion 73 of the fixed fence 24. The lock claw 74 is biased upward by the torque spring 75, and as shown in FIG. 12, when the rotating fence 25 is in the closed state, the locking claw 74 is engaged with the locking portion 73 to close the rotating fence 25. It is supposed to lock.
Further, as shown in FIG. 13, when the falling claw 60 moves downward, the claw portion 60a pushes down the tip bending portion 74a of the lock claw 74 downward against the action of the torque spring 75, and the swinging fence 25 is moved downward. It is designed to be released from the closed state.

FIG. 15 shows one state during the seedling box carrying process,
The lower crank arm 32 swings downward. The claw portions 30a, 40a of the feed claw 30 and the stop claw 40 are inserted into the opening 28a of the guide fence 28, and the stop claw 40 causes the upper wall surface of the claw hole 308 of the seedling box (in the initial state, the The lower end surface) is received, and the seedling box 300 is held stationary.

FIG. 16 shows a state in which the lower crank arm 32 swings upward, and when the feed claw 30 moves upward, the claw portion 30a slides along the upper wall surface of the claw hole 308, and the claw portion 30a. Comes off the claw hole 308, and the roller shaft 3
3, the lower portion 40b of the stop rod 40 is rotated rearward,
The stop claw 40 also comes off the claw hole 308. Leaf spring brake 4
By the action of 3, the seedling box 300 is held in the same position.

When the lower crank arm 32 rotates downward from the state shown in FIG. 16, the claw portion 30a of the feed claw 30 fits into the claw hole 308 as shown in FIG. At this point, the claw portion 40a of the stop claw 40 is still out of the claw hole 308. In this state, when the lower crank arm 32 further rotates downward, the claw portion 30a pushes down the lower wall surface of the claw hole 308 to convey the seedling box 300 by one pitch p. When the lower crank arm 32 rotates to the bottom dead center, the regulation by the roller shaft 33 is released and the stopper claw 40 fits into the claw hole 308,
It returns to the state of FIG.

During the seedling feeding operation, the blocking claw 45 is in sliding contact with the back surface of the seedling box ear portion 307. When the seedling box feeding operation is repeated and the upper end of the seedling box 300 passes through the shut-off claw 45, the torque spring 4 is not regulated by the seedling box.
The action of 9 causes the blocking claw 45 to rotate rearward (see FIG. 18),
As a result, the engaging portion 67a of the interlocking rod 67 engages with the interlocking pin 68. Then, the lower crank arm 32 and the upper crank arm 62 are connected, and the dropping claw 60 is connected to the feed claw 3.
As with 0, it moves up and down, and the seedling box 300 waiting at the delivery position A is pulled down. The seedling box 300 is removed from the hanger 280 and falls into the seedling box transport unit 14.

Hanger 280 with seedling box removed and free
Is collected in the collection box 23 through the collection unit 20a of the hanger rail 20. Along with this, the succeeding seedling box slides down, but this succeeding seedling box is received by the stoppers 25c, 25c of the rotating fences 25, 25.

When the upper crank arm 62 is driven, the closing operation arm portion 62a pushes the closing operation member 71, and the swing fence 25 is closed. At the same time, the lock claw 74 engages with the locking portion 73, and the swing fence 25 is locked in the closed state (see FIG. 12). When handing over the seedling box,
The claw portion 60a of the falling claw 60 pushes the tip bent portion 74a of the lock claw 74 downward, the swing fence 25 is released from the closed state (see FIG. 13), and the swing fence 25 is opened by the action of the torque spring 70. The succeeding nursery box is the nursery box delivery section 13
Will be sent to.

Since the drop-out claws 60 are provided with the restricting projections 60b, the claws 60a are provided on the seedling box once dropped.
Can be prevented from being caught, and a mistake in falling due to a dimensional error or the like can be prevented (see FIG. 14).

The seedling box 300 that has been pulled down is once received by the blocking claw 45 that stands by at the upper position (see FIG. 18).
The blocking claw 45 that has received the seedling box slides downward along the slide member 47 due to the weight of the seedling (see FIG. 19). Then, when the blocking release pin 51 projects during the seedling extrusion, the interlocking arm 50 is pushed backward, and the blocking claw 45 is disengaged from the lower end surface of the seedling box. The seedling box slides down under its own weight and is placed on the preceding seedling box. The blocking claw 45 is again in a state of sliding contact with the back surface of the seedling box ear portion 307 (see FIG. 20).

When the shut-off claw 45 disengages from the lower end surface of the seedling box and rotates forward (state of FIG. 9), the engagement portion 67a of the interlocking rod 67 and the interlocking pin 68 are disengaged, and the withdrawal claw is released. 60
Will not work.

Further, as shown in FIG. 40, if a positioning protrusion 77 is provided at an appropriate position on the hanger rail 20 and a stopper 78 engaging with this is fixedly provided on the second clip 283 of the hanger 280, the seedlings When the box 300 is held, the hanger 280 is stopped at a fixed position, and when the seedling box 300 is released, the hanger 280 is automatically sent to the collection box 23.

As shown in FIG. 21, the empty box returning section 15 has rails 80, 80 having a U-shaped cross section for guiding the ear sections 307, 307 of the seedling box and a receiving pipe 81 for receiving the boundary surface side of the seedling box. And a guide pipe 82 fitted to the rear surface side of the boundary of the seedling box.
The rails 80 and 80 sandwich the left and right sides of the nursery box, and the receiving pipe 81 and the guide pipe 82 sandwich the front and rear sides of the nursery box. The spacing between the rails 80 and 80 and the spacing between the receiving pipe 81 and the guide pipe 82 are wide enough to allow one seedling box to pass through. By configuring in this way, seedling boxes do not overlap each other on the way. .

The seedling extruding device 16 comprises the seedling box feed base 14
Is provided with a predetermined number (14 in the illustrated example) of seedling extruding pins 100, which push out the seedlings backward one row at a time from the seedling box located at the seedling extruding position B. Seedling extrusion pin 100,
Is attached to the bar 101 in the left-right direction, and the seedling pushing rods 102, 102 for supporting both ends of the bar are moved back and forth to push the seedling pushing pins 100 ,. The pin is inserted into the seedling pushing hole 303 of the seedling box to push the seedling in the pot 301 backward.

The drive mechanism for the seedling pushing rod is constructed as shown in FIG. Reference numeral 105 denotes a gear case, and the base of the seedling pushing rod 102 is slidably supported in the gear case 105. A rack 106 is formed at the base of the seedling pushing rod 102, and a fan-shaped pinion 107 that meshes with the rack is provided in the gear case 105. The pinions 107 and 10 in the left and right gear cases 105 and 105
7 is attached to a common shaft 108, and a swing arm 109 fixedly attached to one end of the shaft 108 and a drive arm 110 attached to a second drive shaft 212 described later are connected by a buffer connecting body 112. ing. Buffer connector 112
Is the cylinder 113 on the swing arm 109 side and the drive arm 11
The rod 114 on the 0 side is slidably fitted to the rod 11
Springs 116 and 117 are interposed between the flange 115 fitted to the intermediate portion of No. 4 and the upper and lower walls of the tubular body 113.

When the drive arm 110 rotates in the direction of the arrow from the position shown in the figure, the force pushing up the rod 114 is applied to the spring 11.
6, the swing arm 109 is rotated upward, the pinion 107 is further rotated clockwise, and the seedling push-out pins 110, ... Drive arm 1
When the rotation of 10 exceeds the dead center, the spring 11 that has been compressed
6 repels, the buffer coupling body 112 contracts, the swing arm 109 pivots downward, and the pinion 107
Rotates counterclockwise, and the seedling push-out pins 110, ... Retreat. That is, the protrusions of the seedling pushing pins 110, ... Are forcibly driven via the springs 116, which are cushioning materials, and the receding of the seedling pushing pins 110 ,. When the seedling extruding pins 110, ... Retreat to a predetermined position, the flange 115 causes the step portion 113 of the cylindrical body 113.
The downward movement of the rod 114 after engaging with a is absorbed by the spring 117, and the seedling pushing pin 11
0, ... overstroke is prevented.

The buffer connecting body 112 functions as a safety device, and when an external force is applied to the seedling pushing pins 110, ..., The force is absorbed by the buffer connecting body 112, so that the mission damage to be described later can be prevented. . Further, since the buffer coupling body 112 is provided outside the case, adjustment and replacement are easy.

The seedling delivery device 17 has a common support shaft 121.
A pair of left and right links 1 whose bases are supported by a and 122a
21, 121, 122, 122, and connecting shafts 121b, 121b, 122b, 122b at the tips of the pair of links.
A parallel link device is configured with the brackets 123, 123 connected by
The seedling holder 125 is attached to the holding frame 124 provided between the
Is held. The seedling holder 125 is formed with recesses 125a, ... To which the floor soil portion 310a of the seedling 310 fits.

This recess 125a has a circular shape with an open upper portion in a rear view, ribs 126, 126 are formed at the rear end portions of the side wall surfaces, and a resistance plate 127 is provided at the bottom surface portion. The resistance plate 127 is rotatably attached to the shaft 128, and is biased upward by a spring 129. When the seedling is pushed into the recess 125a, the pot portion of the seedling pushes down the resistance plate 127. Seedling recess 125
When it is completely set in a, the resistance plate 127 projects above the bottom surface of the recess 125a, so that the seedling cannot be pulled out forward.

The drive mechanism of the seedling delivery device 17 connects the swing arm 131 attached to the support shaft 122a of the lower links 122 and 122 and the drive arm 132 attached to the second drive shaft 212 by the buffer rod 133 to drive Arm 13
2 is rotated in a fixed direction to swing the swing arm 131. The buffer rod 133 includes a swing arm side rod 133a and a drive arm side rod 133b.
The two are configured to transmit force via a spring 134. The links 135 and 136 in FIG.
This is a stopper that regulates the vertical rotation range of 32.

The support shafts 122a of the lower links 122, 122 which are the drive side links of the parallel link device are supported by the gear cases 105, 105 of the seedling pushing device 16. By doing so, the phase shift between the seedling pushing device 16 and the seedling delivering device 17 is reduced, the operating accuracy is improved, and the number of parts can be reduced.

By the action of the drive mechanism, the pair of left and right links 121, 121, 122, 122 swing up and down, and the seedling holder 125 causes the seedling holder 125 (E) and the seedling releasing position (FG) in FIG. Move between. Seedling holder 125 is F
When it is at the midpoint of −G, the connecting shaft 12 is directly below the support shafts 121a and 122a, which are the pivots of the links 121 and 122.
Since 1b and 122b are located, the seedling holder 125 moves forward substantially horizontally between FG.

The seedling dropping device 18 has a seedling dropping tool 141 attached to the L-shaped arm 140. The seedling dropper 141 has a tip with a recess 125a of the seedling holder 125,
20 is branched so that it can be inserted into the ... And each tip branch portion is bent as shown in FIG.
A seedling removing portion 141a for receiving the bottom of the seedling and a seedling tapping portion 141b for contacting the upper side surface of the seedbed 310a are formed.

The L-shaped arm 140 is rotatably supported by the support shaft 143. Then, a seedling dropping cam 144 is provided in the vicinity thereof, and a cam roller 145 contacting the outer peripheral surface of the cam is attached to an appropriate position of the L-shaped arm 140. The L-shaped arm 140 is biased by a spring 146 toward the cam 144. The cam 144 has a concave portion 1 in a part of the circumference.
The cam roller 145 has a shape in which 44a is formed.
Spring 146 only when the spring falls into the recess 144a.
The seedling drop tool 141 is momentarily moved downward by the force of. The cam 144 is also attached to the second drive shaft 212.

When the seedling holder 125 is at the seedling receiving position (E), the seedling pushing device 16 pushes the seedling out of the seedling box, and the seedling is pushed into the recesses 125a of the seedling holder 125. And the seedling holder 12 while holding the seedlings
5 rotates to the release position (FG). Seedling holder 125
, Moves from the F point to the G point, the seedling removing parts 141a, ... Of the seedling dropping tool 141 are inserted into the recesses 125a of the seedling holder, and the seedlings held in the recesses are relatively extracted rearward. . As described above, since the seedling holder 125 moves forward substantially horizontally between FG, the seedling removing portions 141a, ... Are linearly inserted into the recesses 124a ,. Is done well. Further, when the seedling holder 125 reaches the point G, the seedling dropping tool 141 moves downward, and the seedling tapping portions 141b, ... Recesses 125a ,.
The seedlings extruded from are knocked down onto the seedling conveying belts 19, 19.

The seedling transport belt 19 has two adjacent strips (L,
R) form a set, and the pair of seedling conveying belts 19 (L, R) are symmetrical with each other. The seedling conveying belt 19 is stretched around a pair of rollers 150 and 151, and the belt is always moved in the direction of the arrow when the driving roller 150 rotates in a predetermined direction. Seventeen 14 seedlings transferred from the seedling transfer device 17 are placed on the upper surfaces of the left and right seedling transport belts 19 (L, R). Then, the seedlings are transferred to the seedling transport belt 19 (L,
R) conveys the seedlings to the outside and sequentially supplies seedlings one by one to the seedling picking position T ₁ of the planting device 10. Further, below the seedling picking position T ₁ , a guide plate 153 is provided for guiding the seedlings to the field scene when planting by the planting device 10.

The planting device 10 is provided with a rotary case 160 which is circular in a side view, and a pair of spatula-shaped implanting rods 161, 161 provided on the rotary case. The internal structure of the rotary case 160 is as shown in FIGS. 28 and 29. In the figure, reference numeral 163 denotes a planting device mounting shaft supported at the rear end of the transmission case 8. A fixed metal 165 is fitted by a key 164 to the tip of the planting device mounting shaft, and a rotary metal is further attached to the stationary metal. Case housing 1
66 is fixed. Therefore, the rotary case 1
60 rotates integrally with the planting device mounting shaft 163. A planting rod actuating cam 168 having an annular guide groove 168a is fitted around the planting device mounting shaft 163. The cam 168 is rotatable with respect to the housing 166 by a bearing 169, and is integrated with a fixed plate 170 fixed to the transmission case 10 by a claw 168b. A pair of rollers 172 and 172 are fitted in the guide groove 168a of the cam 168. These rollers 172
Is an arm 1 that is rotatably fitted around a support shaft 173.
It is attached to 74. Further, a gear 175 is formed on the arm 174, and the gear 174 meshes with a gear 178 attached to a planting rod attachment shaft 177. The stud rod 161 is fixedly attached to the stud rod mounting shaft 177 by a cotter pin 179.

When the planting device mounting shaft 163 rotates in a predetermined direction, the rotary case 160 integrated with it also rotates, and the planting rod 161 moves while drawing a closed locus T (see FIG. 27). At that time, the rollers 172 and 172 move along the guide groove 168a of the implanting rod actuating cam 168, whereby the arm 174 swings, and the swinging thereof causes the gears 175 and 175 to swing.
It is transmitted to the implantation rod mounting shaft 177 via 178. Therefore, the implantation rod 161 slightly changes its angle during movement. That is, when passing through the seedling picking position T ₁ , it is in a horizontal state and is parallel to the seedling 310 supplied to the seedling picking position T ₁ by the seedling conveying belt 19. Then, the rotary case 160 is rotated downward while maintaining its posture, and the seedlings are guided to the planting position T ₂ through the guide plate 153. After the implantation, by changing the posture so that the implantation rod 161 rotates forward relative to the rotary case 160, the implantation rod 160 operates absolutely as if it were pulled out right above. The semen rod 160 and the seedling are separated without difficulty, and the posture of the planted seedling 310 is not disturbed.

As shown in FIG. 3, the transmission case 8 includes three mission cases 180 arranged in parallel,
..., these four parts of the joint case 181, which are added to the space and outer end of the mission case, and the four chain cases 182, which are fixedly connected to the back surface of each joint case, are combined. Become. Mission case 18
The rear portions of 0, ... Have a cylindrical shape that projects to the left and right, and are fixedly connected to the joint case 181, ... By the cylindrical portions 180b, 180b. Center mission case 180
An input unit 183 is integrally formed in (C). Further, a rolling shaft 184 connected to the planting section mounting device 5 is rotatably supported at the front end of the central mission case 180 (C), and the entire planting section 3 rolls with respect to the main body 2. Supported as possible. Then, one in each of the rear end portions of the two center case cases 182 (2, 3) and inside the rear end portions of the left and right chain cases (1, 4), a total of 6
Individual planting devices 10, ... Are provided.

Next, the internal structure of the transmission case 8 will be described (see FIG. 30). Note that FIG. 30 is a developed cross-sectional view, and the orientations and positional relationships of the respective parts are different from the actual ones.

The PTO output of the machine 2 is input to the input shaft 185 in the input unit 183, and from the input shaft, the cylindrical portions 180b of the mission cases 180, ...
Is transmitted by a pair of bevel gears 190 and 191 to a first drive shaft 186 supported inside. This transmission is designed as a safety clutch. That is, the gear 190
Is rotatably fitted to the input shaft 185.
5 and the gear 190 are transmission-coupled via a clutch body 192. The clutch body 192 is slidable with respect to the input shaft 185, and the spring 193 allows the clutch body 1 to slide.
By pressing 92 toward the gear 190, the transmission claws 190a and 192a of both are engaged with each other. Therefore, when the load exceeds a certain level, the clutch body 192 disengages from the gear 190 against the pressing force of the spring 193,
The transmission is stopped. The cylinder body 195 receiving the spring 193 is moved in the direction away from the clutch body 192.
Shifting by 6 stops transmission regardless of the magnitude of the load.

The bevel gear 1 is attached to the first drive shaft 186.
91, sprocket wheel 2 for driving each planting device
00, ... and bevel gears 201 for driving the seedling conveying belts,
, And gears 202 for transmitting to each shaft in the mission case main body 180a ,. The first drive shaft 186 is composed of three shafts 186 (L, C, R) divided into two sections, and each shaft is connected by two sprocket wheels 200, 200 in the center. ing.

Chains 205, ... are stretched between the sprocket wheels 200, ... and the sprocket wheels 204, ... mounted on the planting apparatus mounting shafts 163, ..., and the rotational power of the first drive shaft 186 is Each planting device 10,
It is always told to.

The bevel gears 201, ... Bevel gears 208 attached to the seedling conveying belt drive roller shafts 207 ,.
Are meshed with each other and are directly transmitted from the first drive shaft 186 to the seedling conveying belt drive roller shafts 207 ,.

The mission case 180 is a planting section drive case provided with a drive shaft for driving each section of the planting section 3.
In the mission case 180, the first drive shaft 186
A counter shaft 211, a second drive shaft 212, and a third drive shaft 213 are provided in parallel with. Then, the seedling pushing drive arm 11 is provided at both left and right ends of the second drive shaft 212.
0 and the seedling delivery drive arm 132 are separately attached, and the seedling drop cam 144 is attached near the outer surface of the case. Also, the third drive shaft 2
A seedling feeding drive arm 58a having a tip end portion connected to the seedling feeding rod 58 is attached to 13.

From the first drive shaft 186 to the second drive shaft 212 via the counter shaft 211, two sets of gears 202, 21 are provided.
5 and 216, 217 reduce the speed of transmission.
Further, the second drive shaft 212 is transmitted to the third drive shaft 213 by a cam drive, and the third drive shaft 213 is intermittently driven.
219 is a cam attached to the second drive shaft 212, and 220 is a cam roller supported by an arm 221 attached to the third drive shaft 213.

The gear 217 and the transmission portion of the second drive shaft 212 are provided with a ridge clutch 230 having the following structure. The gear 217 is rotatably fitted to the second drive shaft 212, and the clutch body 231 is fitted to the second drive shaft 212 in a non-rotatable and slidable manner so as to face the gear 217.
The 17 claw 217a and the claw 231a of the clutch body 231 are engaged with each other for transmission. Clutch body 23
Since No. 1 is biased toward the gear 217 by the spring 232, the clutch is normally engaged. When the clutch pin 233 is pressed against the tapered surface 231b of the clutch body 231, the claws 217a and 231a of the both are disengaged and the clutch is disengaged. At that time, the clutch is set to be disengaged when the clutch body 231 reaches a predetermined angle. Therefore, each part of the planting part 3 is adapted to engage and disengage the clutch in units of two rows, and when the clutch is disengaged, these parts are stopped at fixed positions.

Below the planting section 3, as a float for leveling, a center float 250 located at the center of the left and right sides.
(C) and a side float 250 (L, R) located behind the rear wheels of the machine 2 are provided. Each float 2
50 (L, C, R) has a shape that the front part is wide and the rear part is narrow, and groovers 251 for forming grooves for transplanting seedlings are attached to both left and right sides of the rear part. Float 250
(L, C, R) are pivotally attached to the rear end of a float support rod (not shown) rotatably provided in the transmission case 8 in the vertical direction by a support pin (not shown), and the front part is It is hung by the expansion / contraction link 255, and the front part moves up and down according to the unevenness of the paddy field.

The center float 250 (C) is a sensor for detecting the height of the paddy field, and the hydraulic valve 2 for controlling the hydraulic cylinder 6 is based on the vertical movement of the center float.
The spool 57 is switched, and the planting unit 3 is controlled to have a constant height with respect to the paddy field. Therefore, the planting depth of seedlings is always kept constant. The planting depth of seedlings can be adjusted by rotating the float support rod to change the support height of each float.

The fertilizer application device 4 comprises a hopper-shaped fertilizer storage unit 260 for storing fertilizer, a feeding device 261 for feeding the fertilizer in the fertilizer holding unit downward, and a fertilizer fed from the feeding device for seedling planting. Fertilizer conduit 262 leading to the groove and the grooving device 2
51 and the fertilizer discharge part 263 provided inside.

When the planting work is started, the seedling box conveying section 14 is loaded with the seedling box 300 and the seedling box guiding section 12 is provided.
, A plurality of seedling boxes 300, ... Are set in a suspended state by hangers 280 ,. The planting section 3 is shown in FIG.
When the machine 2 is started while the planting section 3 and the fertilizer application device 4 are being driven, the fertilizer is supplied to the seedling planting grooves formed in the field with progress. At the same time, seedlings are planted immediately after that.

[0073]

As described above, the seedling feeding device of the transplanting machine according to the present invention loads seedlings grown in a flexible seedling box together with the seedling box, and vertically suspends the seedling box. Since it is kept in a lowered state, it is possible to set a large number of seedling boxes at one time, and the number of times the seedling boxes are supplied can be reduced.

[Brief description of drawings]

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

FIG. 2 is a side view of a planting part.

FIG. 3 is a plan view of a planting part.

FIG. 4 is a plan view of a main part of a planting part.

FIG. 5 is a plan view of the main part of the planting part different from FIG.

FIG. 6 is a rear view of the planting part.

FIG. 7 is a rear view of a seedling box delivery section and a seedling box transport section.

FIG. 8 is a side view of the seedling box feeding device.

FIG. 9 is a side view of the seedling box feeder in a state different from that of FIG.

FIG. 10 is a cross-sectional view of the seedling box delivery section with the swing fence open.

FIG. 11 is a cross-sectional view of the seedling box delivery section with the rotating fence closed.

FIG. 12 is an explanatory diagram 1 of a seedling box delivery operation.

FIG. 13 is an explanatory diagram 2 of a seedling box delivery operation.

FIG. 14 is an explanatory diagram 3 of a seedling box delivery operation.

FIG. 15 is an explanatory diagram 1 of a seedling box feeding operation.

FIG. 16 is an explanatory diagram 2 of a seedling box feeding operation.

FIG. 17 is an explanatory diagram 3 of a seedling box feeding operation.

FIG. 18 is an explanatory diagram 1 of the operation of the blocking claw.

FIG. 19 is an explanatory diagram 2 of the operation of the blocking claw.

FIG. 20 is an explanatory diagram 3 of the operation of the blocking claw.

FIG. 21 is a cross-sectional view of the empty box returning part.

FIG. 22 is a side view of the main part of the planting part.

FIG. 23 is a side view of the seedling pushing device.

FIG. 24 is a side view of the seedling delivery device and the seedling dropping device.

FIG. 25 is a front view of a seedling holder and a seedling dropping tool.

FIG. 26 is a sectional view of a seedling holder.

FIG. 27 is a side view of the planting device.

FIG. 28 is a cross-sectional view of the planting device.

FIG. 29 is a side view showing the internal structure of the planting device.

FIG. 30 is a developed sectional view of a transmission case.

FIG. 31 is a side view of the hanger.

FIG. 32 is a plan view of a hanger.

FIG. 33 is a rear view of the hanger.

FIG. 34 is an explanatory diagram of a hanger transportation method.

FIG. 35 is a plan view of a seedling box.

36 is a view on arrow D in FIG. 35.

FIG. 37 is an enlarged plan view of a seedling raising pot.

FIG. 38 is a side view of another example 1 of the method for attaching the seedling scattering prevention cover.

FIG. 39 is a side view of another example 2 of the method for attaching the seedling scattering prevention cover.

FIG. 40 is a diagram showing another example of the seedling box guide unit.

[Explanation of symbols]

 1 Fertilizer rice transplanter (transplanter) 2 This machine 3 Planting part 4 Fertilizer application device 5 Planting part installation device 8 Transmission case 9 Seedling supply device 10 Planting device 12 Seedling box guide part 13 Seedling box transfer part 14 Seedling box transfer part 15 Empty Box Return Section 16 Seedling Extrusion Device 17 Seedling Transfer Device 18 Seedling Dropping Device 19 Seedling Conveyor Belt 280 Hanger 300 Seedling Box 310 Seedling

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sumi Fukushima No. 1 Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A seedling box transporting section that pushes seedlings out of the seedling box at an appropriate position on the transporting path while transporting the seedling box from the top to the bottom along a predetermined transporting path, and is provided above the seedling box carrying section. And a seedling box supply unit that guides the seedling box hung in a substantially vertical state in a predetermined direction, and the seedling box sent by the seedling box supply unit above the seedling box transport unit is delivered to the seedling box transport unit. A seedling feeding device for a transplanter, which is provided with a seedling box delivery section.