JP3220883B2 - Rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter in which seedlings are loaded together with a seedling box.

[0002]

2. Description of the Related Art A seedling raised in a flexible seedling box in which a plurality of pots are juxtaposed vertically and horizontally is loaded into a planting section together with the seedling box, and the seedling box is transported in a predetermined shape, for example, a substantially U-shape. While being transported along the route, the seedlings are pushed out of the pots of the seedling box one row at a time at an appropriate position on the transport route, and the seedling holders that have received these seedlings are rotated downward, and the seedlings are rotated at the rotation end position. There has been proposed a rice transplanter configured to release a seedling held by a holder onto a seedling transport belt and supply the seedlings one by one to a seedling picking position of an implantation rod by the seedling transport belt.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a rice transplanter having the above-described structure, in which each portion of the planting portion is arranged without wasting space, and the planting portion is compactly constructed to operate with high accuracy.
The task is to do so.

[0004]

In order to solve the above problems, the present invention has the following arrangement. That is, the first
A rice transplanter according to the invention is a rice transplanter in which seedlings are loaded together with a seedling box, wherein a seedling box feeder for transferring a seedling box along a predetermined transfer path, and a lower portion of the seedling box feeder as a center. Swing up and down, receive the seedlings pushed out from the seedling box located at the proper position of the transport path when located at the top of the swing, and release the seedlings held at the bottom of the swing. The seedling holder and the seedling released from the seedling holder
A seedling transport belt for transporting each plant to the seedling picking position of the planting rod;
And a planting unit drive case having a drive shaft for driving each part of the planting unit. The planting unit drive case is arranged below the seedling box feeder and in front of the planting rod, and A concave portion cut out upward is formed at the rear end of the attachment drive case, and the seedling holder is positioned in the concave portion when the seedling is released. Also,
A rice transplanter according to a second invention holds the seedling holder.
The frame was supported on the case of the seedling pushing device by a link.
It is characterized by. Further, a rice transplanter according to the third invention
A spring for buffering the seedling pushing rod of the seedling pushing device.
It is configured to be moved back and forth through the.

[0005]

In order to consider the arrangement of each part of the planting part, the reference is the position of the planting rod, and the position of the seedling transport belt is determined from the position of the planting rod. The position where the seedling holder releases the seedling is determined. The position at which the seedling holder releases the seedling is located forward of the implanted rod fulcrum due to the locus of the implanted rod. In addition, it is preferable that the planting part drive case also serving as the planting part frame is provided in front of the planting rod. Therefore, it is necessary to devise a method of coexisting the planting part drive case and the seedling holder at the front position of the planting rod without interfering with each other. In the first invention, to form a concave portion which is cut out in the upper side rear portion of the planting unit drive case, since the seedlings holder at the time of releasing the seedlings were configured to be positioned within the recess , available without waste front space Uekomi杆, Ri planting platform drive case is no <br/> need out tension in front, it is possible to shorten the longitudinal dimension of the planting unit. In the second invention, the seedling holder is held.
The frame was supported by a link in the case of the seedling extrusion device
Thus, the accuracy of the movement of the seedling holder increases. And the third departure
According to Ming, the seedling pushing rod of the seedling pushing device is connected to a spring for cushioning.
It can be moved back and forth through the
You.

[0006]

1 to 26 show an embodiment of the present invention. This rice transplanter 1 is a four-wheeled vehicle
A planting section 3 of 6-row planting and a fertilizer application device 4 are attached to the plant, and the whole is configured as a riding type fertilizer rice transplanter. Planting part 3
Is mounted on a parallel link type planting portion mounting device 5 provided at the rear of the machine 2 and is movable up and down with respect to the machine 2.
The planting section mounting device 5 is moved up and down by a hydraulic cylinder 6.

The planting section 3 is a system in which seedlings are loaded together with a seedling box. In a transmission case 10 also serving as a planting section frame, planting apparatuses 12 for the number of planting strips, and a seedling collecting position of the planting apparatus And seedling supply devices for supplying seedlings one by one. Each device for supplying seedlings is a seedling box feeder 14,
A seedling box automatic feeder 15 provided on the seedling box feeder, a seedling pushing device 16 for pushing seedlings from a seedling box at a seedling pushing position of the seedling box feeder 14, a seedling for carrying seedlings pushed down by the seedling pushing device downward. A seedling transfer device 17; a seedling removing device 18 for assisting the seedling delivery device; a seedling transfer belt 19 for transferring seedlings received from the seedling delivery device 17 to a seedling collecting position of the planting device 12.

The seedling box to be used has the structure shown in FIGS. 27 to 29 and is integrally formed of a flexible synthetic resin material. That is, in the seedling box 300, seedling pots 301,... Opening at the top are arranged vertically and horizontally, and a seedling pushing hole 303 having three radial slits 302 is formed at the bottom of each pot. This seedling extrusion hole 30
3 also serves as a drain. Assuming that the longitudinal direction is vertical and the direction perpendicular to the horizontal direction is horizontal, the pot interval is constant pitch p in the vertical direction, and a boundary portion 306 where the interval between pots is widened in the center in the horizontal direction is provided, On both sides, the same number (for example, seven) of pots are arranged at equal intervals per horizontal row. Therefore, the seedling raising pot is divided into two groups on the left and right sides with the band-shaped boundary portion 306 interposed therebetween. The left and right edges of the seedling box are ears for guidance 307
The claw holes 308 are formed in the ear portions at the same pitch as the pitch p in the vertical direction of the pot and are rectangular in plan view.
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. Pot 301, ...
The seedlings are sown with floor soil therein, 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 feeder 14 includes a seedling box mounting portion 21, a connection portion 22, a seedling box transporting portion 23, and an empty box storage portion 24.
The seedling box mounting part 21 has a two-tiered structure with upper and lower seedling box mounting parts 2.
1 (A, B) is provided so as to be inclined such that the front side is higher. The connection part 22 is provided with upper and lower seedling box mounting parts 21 (A,
B) The rear end and the start end of the seedling box transport section 23 are connected.
The seedling box transport section 23 has a substantially U-shape in a side view, and the rear end of the U-shape is the start end of the seedling box transport, and the front end of the U-shape is the end of the seedling box transport. . The empty box storage section 24 is provided in front of the terminal end of the seedling box transport section 23 and has a space in which a plurality of empty seedling boxes can be stacked and held.

[0011] The flow of the seedling box during the planting operation will be described. The seedling box 300 placed on the seedling box placing section 21 is supplied to the seedling box transport section 23 through the connection section 22, and is supplied. The seedling box 300 is intermittently conveyed by a pitch p from the start end to the end by the seedling box automatic feeder 15.
Since the seedling box 300 has flexibility, it can be transported along a curved transport path. During the transport, the pot seedlings in the seedling box are pushed backward by the seedling pushing device 16 at a seedling pushing position 27 provided at the rear lower portion of the seedling box transporting section 23. The empty seedling box discharged from the terminal end of the seedling box transport section 23 is collected in the empty box storage section 24.

The seedling box feeder 14 is shared by two adjacent strips, and three seedling feeders are provided for each machine. Each of the upper and lower seedling box placing portions 21 (A, B) has six seedling box placing surfaces in the left-right direction, and the entire seedling box placing portion 21 slides left and right, so that two adjacent seedling boxes are placed. Is supplied to the seedling box transport section 23. The sliding mechanism of the seedling box mounting part 21 includes a rack 30 attached to the rear surface of the seedling box mounting part 21 in the left-right direction, a pinion 31 that meshes with the rack, and a motor 32 that rotates the pinion in forward and reverse directions. Is done.

A shutter 3 is provided at the front end of the connecting portion 22.
4 (A, B) are provided, and by opening and closing the shutter appropriately, the seedling box of the upper seedling box mounting part 21 (A) and the seedling box of the lower seedling box mounting part 21 (B) are alternately switched. Is supplied to the seedling box transport section 23.

The seedling box feeder frame supporting the seedling box feeder 14 is provided with a vertical frame 36 having a lower end fixed to the transmission case 10 along the shape of the seedling box feeder, and a lower portion of the vertical frame. And a support frame 38, 39 of the seedling box mounting portion 21 is provided over the vertical frame. The vertical frames 36,... Are arranged at the interval and the left and right sides of each seedling box feed stand 14, and the horizontal frame 37 is arranged inside the semicircular portion of the seedling box transporting section 23 in a side view to form a space. Is used effectively.

At the front end of the lower seedling box mounting portion 21 (B), a seedling box guide 41 having a substantially 1/4 circle shape is attached. It is preferable that the tip of the seedling box guide 41 be the same height as the front end of the upper seedling box mounting portion 21 (A) or slightly higher than that. The seedling box guide 41 serves as a guide when the seedling box is loaded in the lower seedling box placing portion 21 (B). The seedling box loading is performed as follows (see FIG. 7).

First, a seedling box 300 held by holding the front end side
Is placed on the upper seedling placing part 21 (A) (state). Next, the seedling box 300 is pulled forward while supporting it with the seedling box guide 41 (state), and the rear end of the seedling box 300 is dropped between the upper and lower seedling box mounting portions 21 (A, B) (state). . The seedling box 300 is supported by the seedling box guide 41.
To load a seedling box into the lower seedling box mounting portion 21 (B).

When the seedling box guide 41 is not provided, the seedling box is inserted between the upper and lower seedling box placing parts 21 (A, B) when the lower seedling box placing part 21 (B) is loaded. Although it was not easy because it had to be performed, the provision of the seedling box guide 41 facilitated the loading operation while supporting the seedling box with the seedling box guide.

If the seedling box guide 41 projects forward to prevent other operations or habitability, the seedling box guide 41 is provided so as to be rotatable around the mounting base. The box guide 41 may be folded back.

FIG. 8 is a view taken in the direction of arrow A in FIG. The supply side portion of the seedling box transporting section 23 holds the seedling box 30 in a state where the ear portion 307 of the seedling box is sandwiched between the edge 44 a of the bottom plate 44 and the holding metal 45.
0 is guided. A vertically long rectangular opening 45a is formed in the lower part of the presser fitting 45.

FIG. 9 is a sectional view taken along the line BB in FIG.
The return side portion of the seedling box transport section 23 is the ear portion 307, 3 of the seedling box.
, A receiving pipe 48 for receiving the front side of the boundary of the seedling box, and a guide pipe 49 fitted on the back side of the boundary of the seedling box.
7 and 47 sandwich the left and right sides of the seedling box, and the receiving pipe 48 and the guide pipe 49 sandwich the front and rear sides of the seedling box. The interval between the rails 47, 47 and the interval between the receiving pipe 48 and the guide pipe 49 are just wide enough to allow one seedling box to pass through. With this configuration, the seedling boxes do not overlap each other. .

The automatic seedling box feeder 15 is shown in FIGS.
1 is shown. Reference numeral 50 denotes an automatic feed rod, which has an automatic feed claw 51 inserted into the opening 45a of the presser fitting 45 and engaged with the lower wall surface of the claw hole 308 of the seedling box. The automatic feed rod 50 is attached to a roller shaft 54 provided at the tip end of the swing arm 53 in a state of being urged to the seedling box path side via a torque spring 55. 5
It moves up and down as it swings around 7. When the automatic feed lever 50 is at the lower limit position, the automatic feed claw 51 is set to be located at the seedling pushing position 27. The swing arm 53 is driven via a seedling feed rod 58. Numeral 60 denotes a control rod, which is inserted into the opening 45a and engages with the upper wall surface of the claw hole 308 of the seedling box.
Having. The stop rod 60 is rotatably supported by a support shaft 62, and a lower end portion of the stop rod 60 slidably abuts the roller shaft 54. Therefore, when the swing arm 53 moves upward, the lower part of the control rod 60 is pushed rightward so that the control claw 61 is disengaged from the claw hole 308. Furthermore, the control rod 6
When 0 is pressed for a certain amount or more, this is engaged with the engagement piece 50a of the automatic feed rod 50, and the automatic feed claw 51 is also disengaged from the claw hole 308. Reference numeral 65 denotes a leaf spring brake, which is a hook portion 65a.
Engages with the claw hole 308 to prevent the seedling box from falling under its own weight. Next, FIGS.
4 will be described.

FIG. 12 shows a state in which the swing arm 53 swings downward, and the automatic feed claw 51 of the automatic feed rod 50 and the stop claw 61 of the stop rod 60 are fitted in the opening 45a. The upper wall surface of the claw hole 308 of the seedling box (the lower end surface of the seedling box in the initial state) is received by 61, and the seedling box 300 is held stationary.

FIG. 13 shows a state in which the swing arm 53 swings upward. When the automatic feed rod 50 moves upward, the automatic feed claw 51 slides along the upper wall surface of the claw hole 308, and the automatic feed claw is moved. 51 is pushed out from the claw hole 308,
The lower portion of the control rod 60 is rotated rearward by being pushed by the roller shaft 54, and the control claw 61 also comes off the claw hole 308. By the action of the leaf spring brake 65, the seedling box 300 is held at the same position.

When the swing arm 53 rotates downward from the state shown in FIG. 13, the automatic feed claws 51 of the automatic feed rod 50 are fitted into the claw holes 308 as shown in FIG. At this point, the control claws 61 of the control rod 60 are still out of the claw holes 308. In this state, when the swing arm 53 further rotates, the automatic feeding claw 51 pushes down the lower wall surface of the claw hole 308 to convey the seedling box 300 by one pitch p. The upper seedling box falls under its own weight. When the swing arm 53 rotates to the bottom dead center, the regulation by the roller shaft 54 is released, the stopping claw 61 is fitted into the claw hole 308, and the state returns to the state shown in FIG.

The seedling box feeder 14 is provided with the automatic seedling box feeder 1
5 is provided with a manual seedling box feeder 69. FIG.
And 70 in FIG. 11 is a manual feed rod having a manual feed pawl 71 similar to the automatic feed pawl 51 and a manual lever 7.
3 is attached to a roller shaft 74 provided at an intermediate portion of the seedling box 3 via a torque spring 75 while being urged toward the seedling box transport path. Normally, the manual feed rod 70 is at the home position shown in FIG. 10, and the manual feed claw 71 is fitted into the claw hole 308 of the seedling box in the cycle in which the seedling box moves by one pitch p. 71 is swung so as to be pushed out from the claw hole 308. When the manual lever 73 is reciprocated within the range shown in FIG. 15, when the manual lever 73 rotates downward, the manual feed claw 71 pushes down the lower wall surface of the claw hole 308 to feed the seedling box 300 by one pitch p. Transport in the direction. When the manual lever 73 is moved slightly above the home position, the roller shaft 74 presses the upper portion 60a of the control rod 60, whereby the control rod 60 rotates counterclockwise, and the control claw 61 comes off the claw hole 308. Therefore, the transfer of the seedling boxes by the manual seedling box feeding device 69 becomes possible.

Further, when the manual lever 73 is moved up to the position shown in FIG. 16 and the manual feed pawl 71 is engaged with the locking piece 71a, the stopping rod 60 is moved to the engaging portion 50a of the automatic feed rod 50.
And the automatic feed rod 50 is rotated backward, so that the automatic feed claws 51 of the automatic feed rod 50 are also disengaged from the claw holes 308, and the seedling box is allowed to fall freely.

The manual feed rod 70 also serves as a stopper for preventing the seedling box from falling when the seedling box is loaded. 76 is a spindle 77
The tip bending portion 76a of the stopper arm is rotatably supported on the projection 70a formed on the side surface of the manual feed rod 70. Stopper arm 7
Reference numeral 6 is provided on a path through which the ear 307 of the seedling box passes, and is urged by a spring 78 in a direction opposite to the feeding direction of the seedling box. When the seedling box 300 is present on the transport path, the stopper arm 76 is pushed by the seedling box 300 and
7, the manual feed rod 70 is free. However, when the seedling box disappears on the transport path, the stopper arm 76 rotates to the position shown by the solid line in FIG. 17 due to the contraction force of the spring 78, and the distal bent portion 76a engages with the projection 70a. Operation 70 is restricted. Therefore, if the seedling box 300 is loaded when the seedling box of the seedling box feed stand 14 is empty, the seedling box 300
Is once received and held by the manual feed pawl 71 of the manual feed rod 70. In this way, it is possible to prevent the seedling box from suddenly dropping to the lower part of the seedling box transport section 23 when the seedling box is loaded and causing trouble in the seedling and seedling box feeding device 15. By operating the manual lever 73 and slightly raising the manual feed rod 71,
The bent portion 76a of the stopper arm and the projection 70a are disengaged from each other, and the manual feed rod 70 becomes free, so that the held seedling box can be dropped. When the seedling box falls, the stopper arm 76 is pushed to the position shown by the chain line.

The rod 80 on which the spring 78 is loosely fitted is linked to the swing arm 53 by a connecting member 81. When the swing arm 53 swings upward, that is, when the automatic feed pawl 51 and Suppressing claw 61 is claw hole 3
When the distance from the position 08 is released, the spring 78 is contracted and the urging force of the stopper arm 76 is increased. As described above, the seedling box 300 is held by the leaf spring brake 65 when the automatic feeding claw 51 and the stopping claw 61 are disengaged from the claw hole 308 immediately before the seedling feeding. The leaf spring brake 65
Just cannot be supported. Therefore, at this time, the stopper arm 76 acts as a brake for preventing the upper seedling box from moving downward, and assists the leaf spring brake 65.

A sensing switch 93 for sensing the presence or absence of a seedling box is provided between the manual feed rod 70, which is a stopper for preventing falling, and the seedling pushing position 27, and the detection result is output to, for example, a seedling reduction lamp 94 of a center mascot. It is displayed. When the seedling reduction lamp 94 is turned on, the operation is stopped, a new seedling box is supplied to the seedling box mounting unit 21, and the empty boxes loaded in the empty box storage unit 24 are removed. If the sensing switch 93 is provided at the position of the present embodiment, seedlings can be replenished before the seedlings completely disappear, so that planting shortage is prevented and the manual feed rod 7 is provided.
When 0 functions as a stopper, the sensing switch 9
3 senses the decrease in seedlings, the replenished seedling box is once received by the manual feed rod 70, and displacement of the seedling box due to impact or the like can be prevented.

The seedling pushing device 16 is provided with the seedling box feeder 14.
A predetermined number (14 in the illustrated example) of seedling pushing pins 100,... For pushing out seedlings one row at a time from the seedling box located at the seedling pushing position 27 of FIG. Seedling push pin 10
0,... Are attached to the bar 101 in the left-right direction,
Seedling pushing rods 102, 10 supporting both ends of the bar
2 is moved back and forth, and when the seedling pushing pins 100,... Protrude backward, the seedling pushing pins are inserted into the seedling pushing holes 303 of the seedling box to push 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.
6, the swing arm 109 is rotated upward, the pinion 107 is further rotated clockwise, and the seedling pushing pins 100 ,. Drive arm 1
When the rotation of 10 exceeds the dead center, the compressed spring 11
6 rebounds, the shock-absorbing connector 112 contracts, the swing arm 109 rotates downward, and the pinion 107 further rotates.
Rotate counterclockwise, and the seedling pushing pins 100 ,. That is, seedling push-out pin 100, ... is projected to be forcibly driven through the spring 116 is a buffer material, seedlings extrusion pin 100, ... are recession is of being rapidly performed by a spring 116. When the seedling pushing pins 100 are retracted to a predetermined position, the flange 115 is moved to the step 113 of the cylindrical body 113.
engages a, downward movement of the subsequent rod 114 spring 11
7 prevents the overstroke of the seedling push-out pins 100 ,. Thus, the spring
Seedling pushing rod 102 and seedling pushing through 116, 117
Since the pull-out pin 100 is driven, these movement amounts can be adjusted.
Is easy.

The shock absorber 112 functions as a safety device, and when an external force is applied to the seedling push-out pins 100 ,..., The force is absorbed by the shock absorber 112, so that damage to the mission described later can be prevented. . 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. The seedling holder 125 is formed with concave portions 125a, into which the floor soil portion 310a of the seedling 310 is fitted.

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 portion of the side wall surface, and a resistance plate 127 is provided at the bottom portion. 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 is configured such that a swing arm 131 attached to the support shaft 122a of the lower links 122, 122 and a drive arm 132 attached to the second drive shaft 212 are 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. Reference numerals 135 and 136 in FIG.
2 is a stopper for restricting the vertical rotation range of the second.

The support shafts 122a 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 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-
When the link shaft 121 is located at the intermediate point of G, the connecting shaft 121 is located immediately below the support shafts 121 a
Since b 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 an L-shaped arm 140. The tip of the seedling removal tool 141 has a concave portion 125a of the seedling holder 125,
, And each tip branch is bent as shown in FIG. 20 in a side view to form a nursery 310a.
And a seedling tapping portion 141b that contacts the upper surface of the seedbed 310a.

The L-shaped arm 140 is rotatably supported by a 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. L-arm 140 is a spring 146 thus cams 144
It is urged in the direction of. The cam 144 has a shape in which a concave portion 144a is formed in a part of the circumference. Only when the cam roller 145 falls into the concave portion 144a, the seed removing device 141 is instantaneously moved downward by the force of the spring 146. Has become. Note that the cam 144 is also connected to the second drive shaft 21.
2 attached.

When the seedling holder 125 is at the seedling receiving position (E), the seedlings are pushed out of the seedling box by the seedling pushing device 16 and the seedlings are pushed into the recesses 125a,. Then, while holding the seedling, the seedling holder 12
5 rotates to the release position (FG). Seedling holder 125
Move from point F to point G, the seedling removal parts 141a,... Of the seedling removing tool 141 are inserted into the recesses 125a of the seedling holder, and the seedlings held in the recesses are relatively pulled out rearward. . As previously described, since the seedlings holder 125 moves forward substantially horizontally between F-G, seedling vent portion 141a, ... recess 125 a, will be linearly inserted into ..., seedlings from seedlings holder 125 Punching is performed well. Further, when the seedling holder 125 reaches the point G, the seedling dropper 141 moves down, and the seedling hitting parts 141b,.
The seedlings extruded from are knocked down on the seedling transport belts 19, 19.

The seedling transport belt 19 is provided with 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 over a pair of rollers 150 and 151, and the belt always moves in the direction of the arrow in FIG. 5 when the drive roller 150 rotates in a predetermined direction. The fourteen seedlings transferred from the seedling transfer device 17 are arranged in seven right and left seedling transport belts 19 (L,
R). Then, the seedling seedling conveyor belt 19 (L, R) and conveyed outward, one by one and sequentially supplies a seedling seedlings up position T ₁ of the planting device 12. Further, the lower seedling-up position T _1, the guide plate 153 for guiding the seedling until field surface is provided at the planting by the planting device 12.

The implanting device 12 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 by the rear end of the transmission case 10, and a fixed metal 165 is fitted to a distal end of the planting device mounting shaft by a key 164, and a rotary metal is further attached to the fixed metal. Case housing 166 is fixed. Therefore, the rotary case 160 rotates integrally with the planting device mounting shaft 163. An annular guide groove 168a is provided around the planting device mounting shaft 163.
Is fitted. 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 175 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. 23). 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 T ₁ , it is in a horizontal state, and is parallel to the seedling 310 supplied to the seedling collecting position T ₁ by the seedling transport belt 19. Then, pivots down while keeping intact orientation relative to the rotary case 160, directs the seedling into the planting position T ₂ through inside of 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 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 10 includes three transmission cases 180,
,.., And four chain cases 181,..., Which are added to the interval portion and the outer end of the transmission case, and four chain cases 182,. Become. Mission case 18
The rear part of the cylinders 0,... Has a cylindrical shape protruding left and right, and is fixedly connected to the extension cases 181,. Central mission case 180
The input unit 183 is integrally formed in FIG. A rolling shaft 184 connected to the planting portion mounting device 5 is rotatably supported at the front end of the central transmission case 180 (C), and the whole planting portion 3 is rolled with respect to the machine 2. Supported as possible. A total of six planting devices 1 are provided, one each on both sides of the rear end of the two chain cases 182 at the center and inside the rear ends of the chain cases 182 on the left and right ends.
2, ... are provided.

Next, the internal structure of the transmission case 10 will be described (see FIG. 26). FIG. 26 is an exploded cross-sectional view, and the directions and positional relationships of the respective parts are different from the actual ones.

The PTO output of the machine 2 is input to an input shaft 185 in an input portion 183, and the cylindrical portions 180b of the transmission cases 180,.
Are transmitted by a pair of bevel gears 190 and 191 to a first drive shaft 186 supported therein. This transmission is configured as a safety clutch. That is, the gear 190
Are rotatably fitted to the input shaft 185,
The gear 5 and the gear 190 are transmission-coupled via a clutch body 192. This clutch body 192 is slidable with respect to the input shaft 185, and the clutch body 1 is
The transmission claws 190a and 192a of the two are engaged with each other by pressing the gear 92 toward the gear 190 side. 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,
Transmission is stopped. The cylinder 195 receiving the spring 193 is moved away from the clutch
If it is shifted by 6, 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 gears 201 for driving each seedling transport belt
, And gears 202 for transmitting to each shaft in the transmission case main body 180a, 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 200, 20.
0. By using the sprocket wheels 200 and 200 as the shaft coupling, the number of parts can be reduced.

Chains 205,... Are stretched between the sprocket wheels 200,... And the sprocket wheels 204,. Each planting device 12,
... is always communicated to.

The bevel gears 201,... Have bevel gears 208 attached to the seedling conveying belt drive roller shafts 207,.
Are directly transmitted from the first drive shaft 186 to the seedling transport belt drive roller shafts 207,.

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.

From the first drive shaft 186 to the second drive shaft 212 via the counter shaft 211, two sets of gears 202, 21
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, the automatic seedling box feeding device 15, the seedling pushing device 16, the seedling delivery device 17, and the seedling removing device 18 are designed to engage and disengage the clutch in units of two lines. Stopped.

Below the planting section 3, a center float 250, which is located at the center in the left and right direction, serves 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 a groove for seedling transplantation are attached to both left and right sides of the rear portion. Float 250
(L, C, R) is a support pin (not shown) provided on the rear end of a float support rod provided rotatably up and down on the transmission case 10.
And the front part is suspended by an expansion / contraction link 255 so that 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 transmission case 10 is located below the seedling box feeder 14 and is provided at the front end of the central transmission case 180 (C) with a rolling shaft 18 for connecting to the planting section mounting device 5.
4 are provided. The transmission case 10, which is also the planting section frame, is preferably provided at this position in view of the attachment and transmission of each section of the planting section. As described above, the first drive shaft 1 is provided in the transmission case 180 as a left-right axis.
86, a counter shaft 211, a second drive shaft 212, and a third drive shaft 213 are provided, and these shafts are arranged from the lower rear to the upper front in the order described above, and along the line. Each of the mission cases 180,... Is also inclined forward.

The main body 180a of the transmission case 180
The vertical dimension is larger than that of the cylindrical portion 180b, and the main body portion 180a has a shape that rises higher than the cylindrical portion 180b by the difference. Therefore, in the side view of FIG. 18, a concave portion 240 cut upward is formed at the rear end of the transmission case 180. Seedling holder 12
The seedling opening position G of No. 5 coincides with the position of the concave portion 240, and the seedling opening position G of the seedling holder 125 overlaps the rear end of the transmission case 180 which is the planting part drive case in plan view. With such a configuration, the space below the seedling box feeder 14 can be effectively used, and the front and rear dimensions of the planting portion can be reduced without lowering the position of the transmission case 180.

Further, by using a common shaft (second drive shaft 212) for the drive shaft of the seedling pushing device 16, the drive shaft of the seedling delivery device 17 and the seedling removing device 18, the number of parts is reduced and the structure is simplified. In addition, there is an effect that the operation timing of each device is hardly shifted.

The fertilizer applicator 4 includes a hopper 26 for storing fertilizer.
0 and a feeder 261 for feeding the fertilizer in the hopper downward.
And a fertilizing pipe 262 for guiding the fertilizer fed from the feeder to a groove for planting seedlings. Fertilizer pipe 262
As shown in FIG. 18, each of the shafts 213 and 213 provided on the transmission case 180 extends downward along the lower surface of the empty box collection unit and the front surface of the seedling box feed stand 14. , 211, 186 and extends obliquely rearward, and the fertilizer discharge port 263 faces the field scene inside the groove generator 251. Each shaft 213, 21
Since 3,211,186 is arranged before the uplink, it can lead to fertilization pipe 262 while maintaining a certain degree of inclination to the vicinity of the planting position T _2.

At the time of the planting operation, the planting section 3 is lowered to the working position shown in FIG.
Then, the fertilizer applicator 4 is driven, fertilizer is supplied to the seedling-planting grooves formed in the field scene with progress, and seedlings are planted immediately thereafter.

[0062]

As described above, when the rice transplanter is constructed as in the present invention, the front and rear dimensions of the planting portion can be reduced, and the body becomes compact and the weight balance becomes good. .

[Brief description of the drawings]

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

FIG. 2 is a side view of the planting section.

FIG. 3 is an overall 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 portion with a part omitted.

FIG. 7 is an explanatory diagram of seedling box supply.

FIG. 8 is a view as viewed in the direction of arrow A in FIG. 2;

FIG. 9 is a sectional view taken along the line BB in FIG. 2;

FIG. 10 is a side view of the seedling box feeding device.

11 is a view as viewed in the direction of the arrow C in FIG. 10 ;

FIG. 12 is a first explanatory diagram of the seedling feeding operation.

FIG. 13 is a second explanatory diagram of the seedling feeding operation.

FIG. 14 is a third explanatory diagram of the seedling feeding operation.

FIG. 15 is a first explanatory diagram illustrating the operation of the manual seedling feeding device.

FIG. 16 is a second explanatory diagram of the operation of the manual seedling feeding device.

FIG. 17 is a third explanatory diagram of the operation of the manual seedling feeding device.

FIG. 18 is a side view of a main part of the planting section.

FIG. 19 is a side view of the seedling pushing device.

FIG. 20 is a side view of the seedling delivery device and the seedling removing device.

FIG. 21 is a front view of a seedling holder and a seedling removal tool.

FIG. 22 is a sectional view of a seedling holder.

FIG. 23 is a side view of the planting device.

FIG. 24 is a sectional view of the planting device.

FIG. 25 is a side view showing the internal structure of the planting device.

FIG. 26 is an expanded sectional view of the transmission case.

FIG. 27 is a plan view of a seedling box.

28 is a view as viewed in the direction of arrow D in FIG. 27 .

FIG. 29 is an enlarged plan view of a seedling raising pot.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 This machine 3 Planting part 4 Fertilizer application device 5 Planting part mounting device 10 Transmission case 12 Planting device 14 Seedling box feed stand 15 Seedling box automatic feeding device 16 Seedling pushing out device 17 Seedling delivery device 18 Seedling removing device 19 Seedling conveying belt 125 Seedling holder 180 Transmission case (planting section drive case) 186 First drive shaft 212 Second drive shaft 213 Third drive shaft 240 Depression 300 Seedling box 310 Seedling

Of the front page Continued (72) inventor Fukushima Sumi Ehime Prefecture Iyo-gun, Tobe-cho, Yakura address 1 Minori Iseki Machinery Co., Ltd. technology section (58) investigated the field (Int.Cl. ^7, DB name) A01C 11/02

Claims (3)

(57) [Claims] In a rice transplanter in which seedlings are loaded together with a seedling box, a seedling box feeder for transferring a seedling box along a predetermined transfer path, and a vertically moving center around a lower portion of the seedling box feeder. A seedling holder that oscillates, receives the seedlings extruded from the seedling box located at an appropriate position on the transport path when positioned at the top of the sway, and releases the held seedlings when positioned at the bottom of the sway. A seedling transport belt for transporting the seedlings released from the seedling holder to the seedling picking position of the implanting rod, one plant at a time, and a planting part drive case having a drive shaft for driving each part of the planting part. Arranging the planting part drive case below the seedling box feeder and in front of the planting rod, and forming a recess cut out upward at the rear end of the planting part drive case; At the time of releasing the seedling holder is located in the recess. A rice transplanter characterized by: (2) Move the seedling box that holds the seedlings along the
Seedling box feeder for transferring seedlings, and seedlings pushing out seedlings from the seedling box
Extrusion device, centering around the lower part of the seedling box feeder
Swings up and down, and when it is located at the top of the swing,
Receiving the seedlings pushed out of the seedling box located in the right part of the route
And release the seedlings that were held at the bottom of the swing.
One seedling holder to be released and one seedling released from the seedling holder
And a seedling transport belt for transporting the seedlings to the seedling picking position.
In the rice transplanter, the frame for holding the seedling holder is
It is supported by a link in the case of the seedling extrusion device.
Rice transplanter. (3) Move the seedling box that holds the seedlings along the
Seedling box feeder and seedling pushing rod that moves back and forth
A seedling pushing device for pushing seedlings from a seedling box by the
Swinging up and down around the lower part of the feed base,
Seedlings located at the right place of the transport route when located at the top of
Receive the seedlings pushed out of the box and place it at the bottom of the swing
A seedling holder for releasing the seedlings held when placing the seedlings;
Place the seedlings released from the holder on the planting rods one by one.
In a rice transplanter with a seedling transport belt
The seedling pushing rod of the seedling pushing device is passed through a spring for buffering.
Rice transplanter characterized by being moved back and forth.