JP3241033B2 - Transplant machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a transplanter for removing a seedling from a seedling box and planting the removed seedling in a field.

[0002]

2. Description of the Related Art Conventionally, in a transplanting machine configured to take out seedlings from a seedling box transported by a seedling box transporting section and plant the extracted seedlings in a field, a spare for newly supplying the seedling box transporting section is provided. The seedling box is configured to receive the lower surface of the seedling box and place it on a seedling box mounting table that supports the seedling box.

[0003]

In the conventional transplanter, when the seedling boxes placed on the seedling box mounting table are supplied to the seedling box transport section, the entire seedling box is moved horizontally from the upper region of the seedling box mounting table. If it is not moved outside, it cannot be supplied to the seedling box transport section. This is one of the obstacles to speeding up and facilitating the operation of supplying seedling boxes to the seedling box transport section. Therefore, an object of the present invention is to make it possible to perform a seedling box supply operation more quickly and easily than in the past, focusing on this point.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention has the following configuration.

[0005] The invention according to claim 1 is a transplanter configured to take out seedlings from a seedling box conveyed by a seedling box conveying part 14 and to plant the taken out seedlings in a field. A seedling box is supplied from above, and a seedling box supply section 12 is provided which is movable above the seedling box transport section 14 while holding and suspending the upper end of the seedling box. This is a transplanter that is a feature of the present invention.

The invention according to a second aspect is characterized in that the seedling box supply section 1 is provided.
2. The transplanter according to claim 1, wherein 2 is provided so that a plurality of seedling boxes can be suspended.

The invention according to a third aspect is characterized in that the seedling box supply section 1
2. The transplanting machine according to claim 1, wherein the seedling box suspended in the step 2 is automatically moved above the seedling box transport section 14.

The invention according to a fourth aspect is directed to the seedling box supply unit 1.
2. The transplanting machine according to claim 1, wherein the seedling box suspended from the container 2 is automatically supplied to the seedling box transport section 14.

According to a fifth aspect of the present invention, the seedling box transport section 1 is provided.
The transplanting machine according to claim 4, wherein the seedling box is supplied from the seedling box supply section (12) to the seedling box transport section (14) when the seedling box being transported is transported to a set position in (4). It is what it was.

[0010]

According to the first aspect of the present invention, the seedlings are taken out from the seedling box transported by the seedling box transporting section 14, and the extracted seedlings are planted in the field. When a seedling box is newly supplied to the seedling box transport unit 14 after the seedling planting operation is advanced, the seedling box in which the upper end of the seedling box is held and suspended in the seedling box supply unit 12 is moved to the seedling box. If the upper seedling box is moved to the upper part of the box conveying part 14 to release the lower end of the seedling box, the seedling box is supplied from above the seedling box conveying part 14.

According to the second aspect of the present invention, a plurality of seedling boxes are suspended from the seedling box supply section 12, and each of the seedling boxes is transferred to the seedling box transport section. 1
4 to release the upper end of the seedling box and supply the seedling box from above.

According to the third aspect of the present invention, the seedling box suspended from the seedling box supply section 12 is automatically moved above the seedling box transport section 14 in addition to the action of the first embodiment. Will do.

According to a fourth aspect of the present invention, the seedling box suspended from the seedling box supply section 12 is automatically supplied to the seedling box transport section 14 in addition to the operation of the first aspect. Becomes

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the invention, when the seedling box being transported by the seedling box transporting section 14 is transported to a set position, the seedling box supplying section 1
From 2 the seedling boxes are supplied to the seedling box transport section 14.

[0015]

According to the first aspect of the present invention, the seedling box transport section 14 is configured to be supplied with a seedling box from above, and the seedling box transport section 14 is held and suspended while holding the upper end of the seedling box. Part 14
Is provided with a seedling box supply section 12 that can be moved above the seedling box, so that when a new seedling box is supplied to the seedling box transport section 14, the seedling box supply section 12 holds the upper end of the seedling box and hangs it. If the seedling box is moved above the seedling box transport section 14 to release the holding of the upper end of the seedling box and lowered, the seedling box is supplied to the seedling box transport section 14, Due to the fuselage configuration,
Even if the seedling box is to be supported at a position distant from the seedling box transport section 14, the seedling box supply operation can be performed more quickly and easily than in the past, and the seedling planting operation can be performed efficiently.

According to a second aspect of the present invention, in the first aspect of the present invention, the seedling box supply section 12 is further provided so that a plurality of seedling boxes can be suspended. While exerting the effect of the invention, each of the plurality of seedling boxes suspended from the seedling box supply unit 12 is moved above the seedling box transport unit 14 to release the lower end of the seedling box and lower it. A plurality of seedling boxes can be arranged lower than in the conventional configuration in which the seedling boxes can be supplied to the seedling box transporting section 14 and the seedling boxes are supported so as to be stacked one above the other.

According to a third aspect of the present invention, in the first aspect of the present invention, the seedling box suspended from the seedling box supply section 12 is automatically moved above the seedling box transport section 14. With this configuration, the seedling box supply operation can be further speeded up and facilitated, and the seedling planting operation can be performed efficiently.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a seedling box suspended from the seedling box supply section 12 is automatically supplied to the seedling box transport section 14. The seedling box supply operation can be automated, and the seedling planting operation can be performed efficiently.

According to a fifth aspect of the present invention, in the above fourth aspect, when the seedling box being transported by the seedling box transporting section 14 is transported to a set position, the seedling box supply section 12
The seedling box is supplied to the seedling box transporting section 14 from above, so that the seedling box is automatically supplied from the seedling box supplying section 12 to the seedling box transporting section 14 in an appropriate state, and the operation of the automatic seedling box supplying operation is performed. Is continued properly, and the seedling planting operation can be performed efficiently.

[0020]

FIG. 1 to FIG. 30 show an embodiment of the present invention. The transplanting machine 1 is equipped with a six-row planting section 3 and a fertilizer application device 4 on a machine 2 which is a four-wheeled vehicle, and is configured as a riding type fertilizer rice transplanter as a whole. The planting section 3 is mounted on a parallel link type planting section mounting device 5 provided at the rear of the machine 2, and is movable up and down with respect to the machine 2. Note that the planting section mounting device 5 is a hydraulic cylinder 6
Up and down.

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 supply device 9 for supplying seedlings to predetermined seedling collecting positions one by one.
And a planting apparatus 10 for the number of planting lines for planting the seedlings supplied to the seedling collecting position on the surface of the paddy field.

Further, the seedling supply device 9 guides the seedling box in a predetermined direction while suspending the seedling box vertically, and transfers the seedling box sent to a predetermined position by the seedling box supply section downward. A seedling box delivery section 13, a seedling box transport section 14 for transporting the seedling box received from the seedling box delivery section from top to bottom, an empty box returning section 15 for returning an empty box after pushing out seedlings to a predetermined collection section,
Seedling extruding device 16 for extruding seedlings from a seedling box being conveyed in the seedling box conveying section 14, a seedling transfer device 17 for transferring seedlings pushed down by the seedling extruding device downward, a seedling removing device for assisting the seedling transferring device 18, a seedling transport belt 19 for transporting the seedlings received from the seedling transfer device 17 to a seedling collecting position of the planting device 12.

The seedling box used has the structure shown in FIGS. The seedling supply device 9 of the rice transplanter is of a type in which the seedling boxes are set together, and the seedling box 300 is integrally formed of a flexible synthetic resin material so that the seedling boxes can be transported along a curved transport path. That is, the seedling box 300 includes seedling pots 301,. . . Are arranged in rows and columns, and a seedling pushing hole 303 having three radial slits 302 is formed at the bottom of each pot. The seedling pushing hole 303 also serves as a drain. Assuming that the longitudinal direction is vertical and the direction perpendicular to the longitudinal direction is horizontal, the pot interval is constant pitch p in the vertical direction, and in the horizontal direction, the boundary portion 30 where the interval between the pots is widened in the central portion.
6 are provided, and the same number (for example, seven) of pots are arranged at equal intervals per horizontal row on both sides thereof. Therefore, the seedling-raising pot has two
The state is divided into groups. The left and right edges of the seedling box serve as guide ears 307, and the claw holes 308 are formed in the ears at the same pitch as the vertical pitch p of the pot, as viewed in plan. The tip 309 of the ear 307 is bent downward substantially at a right angle. The seedling box 300 is formed thin as a whole, and has flexibility in the front-back and left-right directions.
The seedlings are put into pots 301,... And seeded, and grown until they reach an adult seedling 310 of a certain size.

Hereinafter, each part of the planting section 3 will be described.

The seedling box supply section 12 is provided with a hanger rail 20 inclined so that a front portion thereof becomes higher, and a pair of left and right side rails 21 and 21. These rails 20, 21, 2
Numeral 1 is supported by pillars 22, 22 each having a rear view portal shape. The seedling box 300 is hung on a hanger 280 described later, the hanger is hooked on the hanger rail 20, and the seedling box 300 is sent from the front to the rear by its own weight. At that time, the seedling box 30
Side rails 21 and 21 prevent the lower portion of 0 from swinging left and right. The portion 20a of the hanger rail 20 that is located ahead of the seedling box delivery position A is bent obliquely forward so that the hanger 280 from which the seedling box has been removed is guided to the collection box 23.

The hanger has the structure shown in FIGS. That is, a hook member 281 having an arcuate upper portion for hooking on the hanger rail 20 is provided,
At the lower part of the hook member, the first clip 282 sandwiching the border 306 of the seedling box and the bottom of a plurality of (for example, four) pots 301,. A second clip 283 to be held is provided. The second clip 283 is a base plate 285
Are attached by hinges 286, and are biased by torque springs 287 in the direction of sandwiching the pots 301,. The opening operation of the second clip 283 is performed by the second clip 2
This is performed by sandwiching the finger contact portion 283a of the 83 and the finger contact portion 285a of the base plate 285 with two fingers. Hanger 2
When the hook 80 is hooked on the hanger rail 20, the rotation preventing plate 289 fixed to the hook member 281 comes into contact with the side surface of the hanger rail 20, so that the hanger 280 does not rotate in a horizontal plane.

As members for keeping the distance between the hangers constant, there are provided a spacer plate 290 fixed to the side surface of the hook member 281 and a spacer rod 291 projected forward and fixed to the spacer plate. I have. The spacer plate 290 has a hole 293 in the center.
The upper portion 293a of the hole is so narrow that the spacer rod 291 is just fitted. The distal end portion 291a of the spacer rod 291 is bent upward, and locking portions 291bb, 291b protrude left and right from a position slightly behind the bent end portion. The width of both ends of these left and right locking portions is wider than the width of the main body of the hole 293.

When a plurality of seedling boxes hung on the hanger 280 are set on the hanger rail 20, the heights of the front and rear hangers are different, so that the leading end bent portion 291a of the spacer rod 291 of the preceding hanger 280 (1) is rearward. The row is inserted into the hole 293 of the hanger 280 (2). The locking portions 291b, 291b are locked to the spacer plate 290, so that the hangers 280 (1, 2) do not approach any more, and the interval between the seedling boxes suspended in the seedling box supply section 12 is kept constant. Dripping.

When two hangers are placed at the same height, as shown in FIG. 34, the tip 291a of the spacer rod of the right hanger 280 (1) is connected to the left hanger 280.
(2) Upper part 29 of hole 293 of spacer plate 290
3a, and the two hangers are connected, so that two seedling boxes can be held at the same time, which is convenient for transportation.

The seedling box delivery section 13 includes a fixed fence 24 and a rotating fence 25 that support the seedling box, which has moved right above the seedling box transport section 14, from front and rear. The fixed fence 24 is provided on both the left and right sides to receive the ear 307 of the seedling box 300 from behind, and a vertically long rectangular opening 24a is formed below the fixed fence. The rotating fence 25 is rotatably supported around a rotating central axis 26, and is appropriately operated in an open state shown in FIG. 10 and a closed state shown in FIG. The rotating fence 25 is in a closed state, and the main body 25a is in contact with the pot bottom surface of the seedling box
And a stopper 25c for preventing the next seedling box from unnecessarily approaching when in the closed state.

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

Further, a seedling scattering prevention cover 27 is provided behind the fixed fences 24, 24 to prevent the seedlings from dropping 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 with the wing bolt 27b, and the hole 27c through which the wing bolt is inserted is made long in the front-rear direction. The mounting position of the seedling scattering prevention cover 27 can be adjusted according to the seedling length.

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

The seedling box transporting section 14 has ears 307 and 307 by guide fences 28 provided on both sides of the seedling box transporting path.
The seedling box 300 is guided vertically with the 307 sandwiched therebetween. In the lower part of the guide fences 28, 28, rectangular openings 28a, 28a which are long vertically are formed. The lower part of the seedling box transport section 14 is a seedling pushing position B for pushing out seedlings from the pot of the seedling box.

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

Numeral 30 denotes a feed claw, which is inserted from the rear into the opening 28a of the guide fence 28 and has a claw 30a formed at the upper end thereof for engaging with the lower wall surface of the claw hole 308 of the seedling box.
The feed claw 30 is attached to a roller shaft 33 provided at the distal end of the lower crank arm 32 in a state of being urged toward the seedling box path side via a torque spring 34. It moves up and down as it swings as the center. When the feed 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 feed rod 38.

Reference numeral 40 denotes a stopping claw, which is inserted from the rear into the opening 28a of the guide fence 28 and has a claw 40a which engages with the upper wall surface of the claw hole 308 of the seedling box. This stopping claw 40
Is rotatably supported by a support shaft 41, and a lower end portion thereof slidably abuts the roller shaft 33. For this reason,
When the lower crank arm 32 rotates upward, the lower portion 40b of the stopping claw 40 is pushed rearward, and the stopping claw 40 comes off from the claw hole 308. Further, when the lower portion 40b is pushed backward by a certain amount or more, the stopping claw 40 is engaged with the engaging portion 3 of the feed claw.
0b, and the feed pawl 30 comes off the pawl hole 308.

Reference numeral 43 denotes a leaf spring brake whose hook portion 4
The engagement of 3a with the claw hole 308 prevents the seedling box from falling under its own weight.

Numeral 45 denotes a blocking claw, and a claw portion 45a for engaging with an upper wall surface of the claw hole 308 of the seedling box is formed at an upper end portion.
The blocking claw 45 is supported by a slide member 47 so as to be swingable in the front-rear direction by a support shaft 46, and is urged rearward by a torque spring 49. A vertical hole 54 is formed in the slide member 47 in the vertical direction, and upper and lower stopper pins 55 and 56 fixed to the guide fence 28 are fitted into the long hole 54. Further, a tension spring 58 is attached to the upper end of the slide member 47. Therefore, the blocking claw 45
Is vertically slidable within a range where the upper and lower end portions of the elongated hole 54 and the stopper pins 55 and 56 are engaged, and is normally pulled up to the upper limit position by the tension spring 58.

An interlocking arm 50 is provided integrally with the blocking claw 45. When the blocking claw 45 is at the lower limit position,
Seedling push pin 100,. . . The interlock release pin 51 interlocks with the interlock arm 50 and pushes the interlock arm 50 rearward.
Is rotated forward.

Reference numeral 60 denotes a pull-down 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 seedling box, and the claw hole 3 at the lower end of the seedling box.
A projection 60b that restricts the engagement of the claw portion 60a only at 08 is formed. Like the feed claw 30, the pull-down claw 60 is attached to a shaft 63 provided at the distal end of the upper crank arm 62 while being urged to the seedling box path side via a torque spring 64. The arm 62 moves up and down as it swings about the support shaft 66.

The pulling-down claw 60 is configured to interlock with the feed claw 30, and the lower end of the interlocking rod 67 connected to the lower crank arm 32 has an upper end engaging portion 67 a formed on an interlocking pin 68 provided on the upper crank arm 62. It is detachable. The interlocking rod 67 is loosely fitted to the hook 45b of the interlocking claw 45, and the interlocking rod 67 and the interlocking pin 68 are disengaged in conjunction with the swing of the interlocking 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 operating member engaged with the closing operating arm portion 62a of the upper crank arm 62. 71 is fixed to the lower part of the rotating 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 urged upward by a torque spring 75, and engages with the locking portion 73 when the rotating fence 25 is in a closed state, as shown in FIG. It is designed to lock.
Further, as shown in FIG. 13, when the pull-down claw 60 moves down, the claw portion 60 a pushes down the distal bent portion 74 a of the lock claw 74 against the action of the torque spring 75, and the rotating fence 25 is moved. Release from the closed state.

FIG. 15 shows one state during the seedling box transport step.
This shows a state in which the lower crank arm 32 has swung downward. The claw portions 30a, 40a of the feed claw 30 and the control claw 40 are inserted into the opening 28a of the guide fence 28, and the upper claw hole 308 of the seedling box (in the initial state, The lower end surface) is received, and the seedling box 300 is held in a stationary state.

FIG. 16 shows a state in which the lower crank arm 32 swings upward. 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 Is removed from the claw hole 308 and the roller shaft 3
3, the lower portion 40b of the control rod 40 rotates rearward,
The stopping claw 40 also comes off the claw hole 308. Leaf spring brake 4
By the action of 3, the seedling box 300 is held at 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 is fitted into the claw hole 308 as shown in FIG. At this time, the claw portion 40a of the stopping 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, and conveys 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 stopping claw 40 is fitted 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 307. When the seedling box feeding operation is repeated and the upper end of the seedling box 300 passes through the blocking claw 45, the regulation by the seedling box is eliminated, so that the torque spring 4
9, the blocking claw 45 rotates backward (see FIG. 18),
Thereby, the engaging portion 67a of the interlocking rod 67 is engaged with the interlocking pin 68. Then, the lower crank arm 32 and the upper crank arm 62 are connected, and the pull-down claw 60 is
0, the seedling box 300 waiting at the delivery position A is pulled down. The seedling box 300 comes off the hanger 280 and falls into the seedling box transport unit 14.

The hanger 280 in which the seedling box has come off and become free
Are collected in the collection box 23 through the collection section 20a of the hanger rail 20. Accordingly, the subsequent seedling box slides down, and the subsequent 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 rotating fence 25 is closed. At the same time, the locking claw 74 is engaged with the locking portion 73, and the rotating fence 25 is locked in the closed state (see FIG. 12). When the seedling box is delivered,
The claw portion 60a of the pull-down claw 60 pushes down the distal bent portion 74a of the lock claw 74 to release the turning fence 25 from the closed state (see FIG. 13), and the turning fence 25 is opened by the action of the torque spring 70, Subsequent seedling box is the seedling box delivery section 13
Will be sent to

Since the withdrawing claw 60 is provided with the restricting projection 60b, the claw portion 60a is attached to the seedling box once withdrawn.
Can be prevented from being caught, and a drop-in mistake due to a dimensional error or the like can be prevented (see FIG. 14).

The seedling box 300 that has been withdrawn is temporarily received by the blocking claw 45 waiting at the upper position (see FIG. 18).
The blocking claw 45 receiving the seedling box slides downward along the slide member 47 due to the weight of the seedling (see FIG. 19). When the release pin 51 projects when the seedling is pushed out, the interlocking arm 50 is pushed backward, and the blocking claw 45 comes off the lower end surface of the seedling box. The seedling box slides down under its own weight and rests on the preceding seedling box. The blocking claw 45 again comes into sliding contact with the back surface of the seedling box ear 307 (see FIG. 20).

When the blocking claw 45 is disengaged from the lower end surface of the seedling box and pivots forward (the state shown in FIG. 9), the engagement between the engaging portion 67a of the interlocking rod 67 and the interlocking pin 68 is released, and the pulling-down claw is released. 60
Will not work.

As shown in FIG. 40, when a positioning projection 77 is provided at an appropriate position on the hanger rail 20 and a stopper 78 which engages with the positioning projection 77 is fixed to the second clip 283 of the hanger 280, the seedling can be obtained. When the box 300 is being held, the hanger 280 is stopped at a fixed position. 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 return section 15 has rails 80, 80 having a U-shaped cross section for guiding the ears 307, 307 of the seedling box, and a receiving pipe 81 for receiving the boundary surface of the seedling box. And a guide pipe 82 fitted on the back side of the boundary portion of the seedling box.
The left and right sides of the seedling box are sandwiched between the rails 80, 80, and the front and rear of the seedling box are sandwiched between the receiving pipe 81 and the guide pipe 82. The interval between the rails 80, 80 and the interval between the receiving pipe 81 and the guide pipe 82 are just wide enough to allow one seedling box to pass through. With this configuration, the seedling boxes do not overlap on the way. .

The seedling pushing device 16 is provided with the seedling box feeder 14.
A predetermined number (14 in the illustrated example) of the seedling pushing pins 100,. . . It has. Seedling push pin 10
0,. . . Are attached to a bar 101 in the left-right direction, and seedling pushing rods 102, which support both ends of the bar.
102 is moved back and forth, and the seedling pushing pins 100,. . . When the seedlings protrude backward, the seedling push-out pins 3
03 to push out the seedlings in the pot 301 backward.

The drive mechanism of the seedling pushing rod is configured 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 meshing with the rack is provided in the gear case 105. Pinions 107, 10 in left and right gear cases 105, 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 shock absorber 112. ing. Buffer connector 112
Are the cylinder 113 on the side of the swing arm 109 and the drive arm 11
The rod 114 on the 0 side is slidably fitted, and the rod 11
The springs 116 and 117 are interposed between the flange 115 fitted to the middle part of the cylinder 4 and the upper and lower walls of the cylindrical body 113.

When the drive arm 110 rotates in the direction of the arrow from the position shown in FIG.
., The swing arm 109 rotates upward, the pinion 107 further rotates clockwise, and the seedling pushing pins 110 project. When the rotation of the drive arm 110 exceeds the dead center, the compressed spring 116 rebounds, so that the shock-absorbing connector 112 contracts,
The swing arm 109 rotates downward, and the pinion 1
07 rotates counterclockwise, and the seedling pushing pins 110,. That is, the protrusions of the seedling pushing pins 110,... Are forcibly driven via the springs 116, which are cushioning members, and the retreating of the seedling pushing pins 110,. Seedling push pin 110,
Is retracted to a predetermined position, the flange 115 engages with the step 113a of the cylindrical body 113, and the rod 1
The downward movement of 14 is absorbed by the spring 117, thereby preventing the overstroke of the seedling pushing pins 110,.

When the external force is applied to the seedling push-out pins 110,..., The shock absorbing body 112 functions as a safety device and the force is absorbed by the shock absorbing body 112.
It is possible to prevent the damage of the mission described later. In addition, since the shock-absorbing connector 112 is provided outside the case, adjustment and replacement are easy.

The seedling delivery device 17 has a common support shaft 121.
a, a pair of left and right links 1 each having a base supported by 122a
21, 121, 122, 122, and connecting shafts 121b, 121b, 122b, 122b
A parallel link device is constituted by the brackets 123, 123 connected by the
The seedling holder 125 is mounted on the holding frame 124 provided between the
Is held. In the seedling holder 125, recesses 125a,... Into which the floor soil portion 310a of the seedling 310 is fitted are formed.

The concave portion 125a has a circular shape with an open top when viewed from the rear, and ribs 126, 126 are formed at the rear end of the side wall surface, and a resistance plate 127 is provided at the bottom surface. The resistance plate 127 is rotatably attached to the shaft 128, and is urged 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 is concave 125
If the seedlings are completely contained in a, the resistance plate 127 protrudes above the bottom surface of the concave portion 125a, so that the seedlings cannot be pulled forward.

The drive mechanism of the seedling transfer device 17 includes a swing arm 131 attached to the support shaft 122 a of the lower links 122, 122 and a drive arm 132 attached to the second drive shaft 212 connected by a buffer rod 133. Arm 13
2 is rotated in a certain direction to swing the swing arm 131. The buffer rod 133 includes a rod 133a on the swing arm side and a rod 133b on the drive arm side.
, So that both transmit power via the spring 134. 135 and 136 in FIG.
32 is a stopper for restricting the vertical rotation range of 32.

The support shafts 122 a of the lower links 122, 122, which are the driving 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 delivery device 17 is reduced, the operation accuracy is improved, and the number of parts can be reduced.

The pair of left and right links 121, 121, 122, and 122 swings up and down by the action of the drive mechanism, and the seedling holder 125 moves the seedling receiving position (E) and the seedling releasing position (FG) in FIG. Move between. Seedling holder 125 is F
-G, the connecting shaft 12 is located immediately 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 substantially horizontally forward between FG.

The seedling removing device 18 has a seedling removing tool 141 attached to the L-shaped arm 140. The tip of the seedling removal tool 141 has a concave portion 125a of the seedling holder 125,
Are branched so as to be able to be inserted into..., And each tip branch portion is bent as shown in FIG.
A seedling removing portion 141a that receives the bottom of Oa and a seedling hitting portion 141b that contacts the upper surface of the seedbed 310a are formed.

The L-shaped arm 140 is rotatably supported by the support shaft 143. Then, a seedling removing cam 144 is provided in the vicinity thereof, and a cam roller 145 that is in contact with 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 in the direction of the cam 144. The cam 144 has a recess 1 in a part of the circumference.
44a are formed, and the cam rollers 145
Spring 146 only when it falls into its recess 144a.
The power of the seedling removing tool 141 is instantaneously moved downward. The cam 144 is also attached to the second drive shaft 212.

When the seedling holder 125 is at the seedling receiving position (E), seedlings are pushed out of the seedling box by the seedling pushing device 16 and the seedlings are recessed in the seedling holder 125.
・ It is pushed into. Then, the seedling holder 125 rotates to the release position (FG) while holding the seedling. Seedling holder 1
When 25 moves from the point F to the point G, the seedling removal parts 141a,.
, And the seedlings held in the recesses are relatively pulled out rearward. As described above, the seedling holder 125 is
-Since it moves almost horizontally forward between G, the seedling removal part 14
Are linearly inserted into the recesses 124a,..., And seedling removal from the seedling holder 125 is performed favorably. Further, when the seedling holder 125 reaches the point G, the seedling dropper 141 moves down, and the seedling hitting portion 141 is moved.
b are knocked down onto the seedling transport belts 19, 19.

The seedling transport belt 19 is connected to two adjacent strips (L,
R) make a pair, and the pair of seedling transport belts 19 (L, R) are bilaterally symmetric. The seedling transport belt 19 is stretched around a pair of rollers 150 and 151, and the belt always moves in the direction of the arrow as the drive roller 150 rotates in a predetermined direction. The 14 seedlings transferred from the seedling transfer device 17 are placed on the upper surfaces of the right and left seedling transport belts 19 (L, R), seven by seven. Then, the seedlings are transferred to the seedling transport belt 19 (L,
R) is transported outward and the seedling picking position T1 of the planting device 10
And supply the seedlings one by one. Also, the seedling picking position T1
A guide plate 153 for guiding the seedlings to the field scene at the time of planting by the planting apparatus 10 is provided below the table.

The implanting device 10 includes a rotary case 160 having a circular shape in a side view, and a pair of spatula-shaped implanting rods 161 and 161 provided on the rotary case. The internal structure of the rotary case 160 is as shown in FIGS. In the figure, reference numeral 163 denotes a planting device mounting shaft supported at the rear end of the transmission case 8, and a fixed metal 165 is fitted to a distal end portion of the planting device mounting shaft by a key 164, and further, a rotary Case housing 1
66 is fixed. Therefore, the rotary case 1
60 rotates integrally with the planting device mounting shaft 163. A planting rod operating 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 rotatably fitted around the support shaft 173.
74. Further, a gear 175 is formed on the arm 174, and the gear 174 meshes with a gear 178 mounted on the planted rod mounting shaft 177. The implantation rod 161 is fixedly attached to the implantation rod mounting shaft 177 by cotter pins 179.

When the implanting device mounting shaft 163 rotates in a predetermined direction, the rotary case 160 integrated therewith also rotates, and the implanting rod 161 moves while drawing a closed locus T (see FIG. 27). At this time, the rollers 172 and 172 move along the guide groove 168a of the implantable rod operating cam 168, so that the arm 174 swings.
It is transmitted to the implanted rod mounting shaft 177 via 178. For this reason, the angle of the implantation rod 161 changes slightly during movement. That is, when passing through the seedling collecting position T1, it is in a horizontal state, and is parallel to the seedling 310 supplied to the seedling collecting position T1 by the seedling transport belt 19. And
The seedling is rotated downward while keeping its posture with respect to the rotary case 160, and guided through the guide plate 153 to the planting position T2. 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 can be operated such that the implantation rod 160 is pulled out directly above. Separation of the rod 160 and the seedling is performed without difficulty, and the posture of the planted seedling 310 is not disturbed.

As shown in FIG. 3, the transmission case 8 includes three transmission cases 180,.
.., four chain cases 181, added to the gaps and outer ends of these mission cases, four chain cases 18 fixedly connected to the back surface of each chain case
Each part of 2, ... is combined. The rear part of the transmission cases 180,... Has a tubular shape projecting left and right, and is fixedly connected to the extension cases 181,. The input unit 183 is formed integrally with the central transmission case 180 (C). Also, the central mission case 180 (C)
A rolling shaft 184 connected to the planting portion mounting device 5 is rotatably supported at the front end of the planting portion 3, and the whole planting portion 3 is rotatably supported by the machine 2. A total of six planting devices 10, one on each side of the rear end of the two chain cases 182 (2, 3) at the center and inside the rear end of the chain case (1, 4) on both the left and right sides, are provided.・ Is provided.

Next, the internal structure of the transmission case 8 will be described (see FIG. 30). FIG. 30 is an exploded cross-sectional view, and the directions, positional relationships, and the like of the respective parts are different from actual ones.

The PTO output of the machine 2 is input to the input shaft 185 in the input section 183, and the input shaft forms the cylindrical sections 180b,... Of the transmission cases 180,. -It is transmitted by the pair of bevel gears 190 and 191 to the first drive shaft 186 supported inside. This transmission is configured as a safety clutch. That is, the gear 190 is rotatably fitted to the input shaft 185, and the input shaft 185 and the gear 190 are transmission-coupled via the clutch body 192. The clutch body 192 is slidable with respect to the input shaft 185, and the transmission claws 190a and 192a of the two are engaged with each other by pressing the clutch body 192 toward the gear 190 by a spring 193. For this reason, when the load exceeds a certain level, the clutch body 192 moves against the gear 1 against the pressing force of the spring 193.
90, the transmission is stopped. When the cylinder 195 receiving the spring 193 is shifted by the shifter 196 in a direction away from the clutch 192, the transmission is stopped regardless of the magnitude of the load.

The first drive shaft 186 has the bevel gear 1
91, the sprocket wheel 2 for driving each planting device.
00,..., Bevel gear 20 for driving each seedling transport belt
, And the mission case main body 180a,.
Gears 202,... For transmitting to each of the shafts are mounted. The first drive shaft 186 is composed of three shafts 186 (L, C, R) divided into two-row units, and these shafts are connected to two central sprocket wheels 20.
It has a structure connected by 0,200.

The chain 205,... Is located between the sprocket wheels 200,... And the sprocket wheels 204,.
Are stretched, and the rotational power of the first drive shaft 186 is constantly transmitted to each of the planting apparatuses 10,.

The bevel gears 201,... Mesh with bevel gears 208,... Attached to the seedling transfer belt drive roller shafts 207,. , ... are transmitted directly.

The mission case 180 is a planting section drive case having a drive shaft for driving each part of the planting section 3.
In the transmission case 180, a first drive shaft 186 is provided.
In parallel, a counter shaft 211, a second drive shaft 212, and a third drive shaft 213 are provided. Then, the seedling pushing drive arm 11 is provided on both left and right ends of the second drive shaft 212.
0 and a seedling transfer drive arm 132 are separately attached, and a seedling removal cam 144 is attached near the outer surface of the case. Also, the third drive shaft 2
At 13 is attached a seedling feed drive arm 58a having a tip connected to the seedling feed rod 58.

Two sets of gears 202, 21 from the first drive shaft 186 to the second drive shaft 212 via the counter shaft 211.
5 and 216, 217 at a reduced speed.
Further, the drive is transmitted from the second drive shaft 212 to the third drive shaft 213 by 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.

A ridge clutch 230 configured as follows is provided on the transmission portion of the gear 217 and the second drive shaft 212. The gear 217 is rotatably fitted to the second drive shaft 212, and the clutch 231 is non-rotatably and slidably fitted to the second drive shaft 212 in opposition thereto.
The 17 pawls 217a and the pawls 231a of the clutch body 231 are engaged with each other for transmission. Clutch body 23
1 is biased toward the gear 217 by the spring 232, so that the clutch 1 is always engaged. When the clutch pin 233 is pressed against the tapered surface 231b of the clutch body 231, both claws 217a and 231a are disengaged and the clutch is disengaged. At this 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 designed to switch on and off the clutch in units of two lines, and when the clutch is disengaged, these parts are stopped at fixed positions.

Below the planting section 3, a center float 250 located at the center in the left and right direction is provided as a float for leveling.
(C) and a side float 250 (L, R) located behind the rear wheel of the machine 2. Each float 2
50 (L, C, R) has a wide front portion and a narrow rear portion, and groove forming devices 251 for forming grooves for seedling transplantation are attached to both left and right sides of the rear portion. Float 25
0 (L, C, R) is pivotally attached to a rear end of a float support rod (not shown) rotatably provided on the transmission case 8 by a support pin (not shown), and a front part. Are suspended by the expansion / contraction link 255, and the front part moves up and down according to the unevenness of the paddy field surface.

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 based on the vertical movement of the center float.
The spool 57 is switched, and the planting unit 3 is controlled so as to have a constant height with respect to the paddy field surface. For this reason, the planting depth of the seedlings is always kept constant. By turning the float support rod to change the support height of each float, the planting depth of the seedling can be adjusted.

The fertilizer applicator 4 includes a hopper-shaped fertilizer storage section 260 for storing fertilizer, a feeder 261 for feeding the fertilizer in the fertilizer holding section downward, and a fertilizer fed from the feeder for planting seedlings. A fertilizer conduit 262 leading to the groove,
51, and a fertilizer discharge section 263 provided inside the inside.

When starting the planting operation, the seedling box 300 is loaded into the seedling box transport section 14 and the seedling box guide section 12
, A plurality of seedling boxes 300,.
・ Set to the suspended state by. Then, when the planting unit 3 is lowered to the work position shown in FIG. 10 and the machine 2 is started while the planting unit 3 and the fertilizer applicator 4 are driven, the seedling planting formed in the field scene with the progress is performed. Fertilizer is supplied to the ditch and seedlings are planted immediately thereafter.

As described above, this transplanter has a structure in which the seedling box transport section 14 is supplied with the seedling boxes from above, and the seedling box carrying section 14 is held in a suspended state while holding the upper end of the seedling box. Since the seedling box supply unit 12 which is movable above the transfer unit 14 is provided, when a new seedling box is supplied to the seedling box transfer unit 14, the seedling box supply unit 12 holds the upper end of the seedling box. When the seedling box suspended and moved is moved above the seedling box transport section 14 to release the holding of the upper end portion of the seedling box and lowered, the seedling box is supplied to the seedling box transport section 14. Become,
Even if the seedling box is to be supported at a position distant from the seedling box transporting section 14 due to the machine structure, the seedling box supply operation can be performed more quickly and easily than in the past, and the seedling planting operation can be performed efficiently. .

Further, since the seedling box supply section 12 is provided so that a plurality of seedling boxes can be suspended, the seedling box supply section 12 is provided.
Each of the plurality of seedling boxes suspended above the seedling box is moved above the seedling box transporting section 14 to release the upper end of the seedling box and lowered, and can be supplied to the seedling box transporting section 14, and are piled up and down multiple times. The plurality of seedling boxes can be arranged lower than the conventional structure for supporting the seedling boxes as described above, so that the center of gravity is low and stable running can be achieved.

Further, since the seedling box suspended from the seedling box supply section 12 is automatically moved above the seedling box transport section 14, the seedling box supply operation can be further speeded up and facilitated. The planting of seedlings can be performed more efficiently and efficiently.

Further, since the seedling boxes suspended from the seedling box supply section 12 are automatically supplied to the seedling box transport section 14, the seedling box supply operation can be automated and the seedlings can be efficiently planted. Work can be performed.

Further, when the seedling box being transported by the seedling box transporting section 14 is transported to a set position, the seedling box is supplied from the seedling box supplying section 12 to the seedling box transporting section 14. Then, the seedling boxes are automatically supplied from the seedling box supply section 12 to the seedling box transport section 14 in an appropriate state, and the operation of the automatic seedling box supply is properly continued, so that the seedling planting operation can be performed efficiently.

[Brief description of the 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 the planting section.

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

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

FIG. 5 is a plan view of a main part of the planting portion different from FIG. 4;

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

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 feeding device in a state different from FIG. 8;

FIG. 10 is a cross-sectional view of the seedling box delivery section in a state where the rotating fence is opened.

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

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

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

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

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

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

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

FIG. 18 is a diagram illustrating the operation of the blocking claw.

FIG. 19 is a diagram illustrating the operation of the blocking claw.

FIG. 20 is a diagram illustrating the operation of the blocking claw.

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

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

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 removing device.

FIG. 25 is a front view of a seedling holder and a seedling removing 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 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 the transmission case.

FIG. 31 is a side view of the hanger.

FIG. 32 is a plan view of the hanger.

FIG. 33 is a rear view of the hanger.

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

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

36 is a view as viewed in the direction of the arrow D in FIG.

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

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

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

FIG. 40 is a diagram illustrating another example of the seedling box guide section.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fertilizer rice transplanter (transplanter) 2 main unit 3 planting unit 4 fertilizer application device 5 planting unit mounting device 8 transmission case 9 seedling supply device 10 planting device 12 seedling box guide unit 13 seedling box transfer unit 14 seedling box transport unit 15 Empty box return unit 16 Seedling pushing device 17 Seedling delivery device 18 Seedling removing device 19 Seedling transport belt 280 Hanger 300 Seedling box 310 Seedling

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-185305 (JP, A) JP-A-2-111217 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 350-366

Claims (5)

(57) [Claims] 1. A transplanter configured to take out seedlings from a seedling box transported by a seedling box transporting section and plant the extracted seedlings in a field. And a seedling box supply section 12 that is movable above the seedling box transport section 14 while holding and suspending the upper end of the seedling box. 2. The transplanter according to claim 1, wherein said seedling box supply section is provided so as to suspend a plurality of seedling boxes. 3. A transplanter according to claim 1, wherein said seedling box suspended from said seedling box supply section is automatically moved above said seedling box transport section. 4. The transplanter according to claim 1, wherein the seedling boxes suspended from the seedling box supply section are automatically supplied to the seedling box transport section. 5. A seedling box is supplied from said seedling box supply section 12 to said seedling box transfer section 14 when a seedling box being transferred by said seedling box transfer section 14 is transferred to a set position. The transplanter according to claim 4, characterized in that: