JPH06327306A - Fertilizing rice-transplanter - Google Patents

Abstract

PURPOSE:To determine the optimum arrangement of fertilizer guiding pipes in a fertilizing rice-transplanter having a planting part at the back of a mobile car body and guiding fertilizer from a fertilizer storage part placed at the upper rear part of the mobile body through a fertilizer guiding pipe to a fertilizing part placed in front of the seedling planting position. CONSTITUTION:Various parts of a planting part are driven by laterally extending plural driving shafts 186, 211, 212, 213 arranged in such a manner as to position the front-side shaft above the preceding shaft. The lower part of a fertilizer guiding pipe 262 is placed under the driving shafts 186, 211, 212, 213 nearly parallel to the arrangement of the driving shafts. The inclination of the lower part of the fertilizer guiding pipe 262 can be increased and the flowability of the fertilizer in the fertilizer guiding pipe 262 is improved by the arrangement. Furthermore, the fertilizing part 263 is placed close to the seedling transplanting position T2 to shorten the fertilizer-free region at the start of transplantation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a fertilizer conduit to install a planting section at the rear of a vehicle body, and from a fertilizer storage section provided at the upper rear part of the vehicle body to a fertilizer section provided in front of the seedling planting position. The present invention relates to a fertilizer planter configured to guide fertilizer.

[0002]

2. Description of the Related Art There is a riding type rice transplanter in which seedlings raised in a flexible seedling box in which a plurality of pots are vertically and horizontally arranged are loaded into a planting section together with the seedling boxes. This rice transplanter is provided with a seedling box feed table for transporting the seedling box along a substantially U-shaped transport path in a side view at the upper part of the planting section, and the parts of the planting section are provided below the seedling box feed table. A planting part drive case including a plurality of left and right driving shafts for driving is provided, and a planting rod is provided behind the planting part drive case.

[0003]

When the fertilizer application apparatus is mounted on the rice transplanter having the above-mentioned structure, the fertilizer storage section is provided at the upper rear part of the traveling vehicle body, which is the rear side of the cockpit, and the fertilizer storage section is used to insert seedlings into the rice seedlings. The fertilizer is guided by the fertilizer conduit to the fertilizer application section provided in front of the planting position. However, since there is a seedling box feed box and a planting part drive case in front of the planting rod, there is a restriction on the position where the fertilizer conduit passes.

Points to be considered when considering the arrangement of fertilizer conduits are as follows: (1) In order to shorten the fertilizer-free section at the start of planting, a fertilizer application section is provided as close to the seedling planting position as possible (2). The fertilizer conduit may be tilted to a certain extent so as not to impair the flow of fertilizer in the fertilizer conduit, and it was necessary to determine an appropriate placement of the fertilizer conduit in consideration of these points.

[0005]

In order to solve the above problems, the present invention has the following constitution. That is, the fertilizer rice transplanter according to the present invention is equipped with a planting section at the rear of the traveling vehicle body, and a fertilizer conduit is provided from the fertilizer storage section provided at the upper rear portion of the traveling vehicle body to the fertilizing section provided at the front of the seedling planting position. In a fertilizer transplanter configured to guide fertilizer, a plurality of left and right drive shafts that drive each part of the planting section are arranged so that the front side shafts are positioned higher, and the lower part of the fertilizer conduit is set to these drive shafts. It is characterized in that it is disposed on the lower side in a manner substantially parallel to the arrangement of the drive shafts.

[0006]

[Function] The rice transplanter, which is designed to load seedlings together with the seedling box, has a planting section drive case that is almost in contact with the lower end of the seedling box feed stand due to space constraints. The conduit cannot be arranged, and the fertilizer conduit is inevitably passed under the planting part drive case. In that case, as in the present invention, the plurality of left and right drive shafts provided in the planting part drive case are arranged so that the front side shafts are positioned higher, and the lower part of the fertilizer conduit is located below these drive shafts. If the drive shaft is arranged on the side substantially parallel to the arrangement of the drive shafts, the inclination of the lower part of the fertilizer conduit can be increased, and the fertilizer distribution in the fertilizer conduit can be improved. Further, since the lower end of the fertilizer conduit reaches the rear, the fertilizer application section and the seedling planting position are close to each other, and the fertilizer-free section at the start of planting can be shortened.

[0007]

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

The planting unit 3 is a system for loading seedlings together with a seedling box, and a transmission case 10 which also serves as a planting unit frame, planting devices 12 for the number of planting lines, and seedling taking positions of the planting devices. Each of the seedling feeding devices for feeding seedlings one by one is assembled to the plant. Seedling box feeder 14,
A seedling box automatic feeding device 15 provided on the seedling box feeding stand, a seedling pushing device 16 for pushing seedlings out of the seedling box at the seedling pushing position of the seedling box feeding stand 14, and a seedling carrying the seedling pushed by the seedling pushing device downward A delivery device 17, a seedling drop device 18 for assisting the seedling delivery device, a seedling delivery belt 19 for delivering the seedlings received from the seedling delivery device 17 to a seedling picking position of the planting device 12, and the like.

The seedling box 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 raising pots 301, ... Opening to the top are arranged in a matrix in a vertical and horizontal direction, and seedling pushing holes 303 having three radial slits 302 are formed at the bottom of each pot. This seedling extrusion hole 30
3 also serves as drainage. Assuming that the longitudinal direction is vertical and the direction orthogonal thereto is horizontal, the pot interval is a constant pitch p in the vertical direction, and the boundary portion 306 in which the pot-to-pot interval is wide is provided in the center in the horizontal direction. The same number of pots (for example, 7 pots) are arranged on each side of the row at equal intervals. Therefore, the seedling-growing pots are divided into left and right groups with the strip-shaped boundary portion 306 interposed therebetween. The left and right edges of the seedling box are ears 307 for guidance.
Claw holes 308 having a square shape in plan view are formed in the ears at the same pitch as the vertical pitch p of the pot.
A tip portion 309 of the ear portion 307 is bent downward at a substantially right angle. The seedling box 300 is formed thin throughout and has flexibility in the front-rear direction and the left-right direction. Pot 301, ...
Bed soil is put in the seeds and sown, and the seedlings are grown to a size 310.

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

The seedling box feeding base 14 comprises a seedling box placing section 21, a connecting section 22, a seedling box carrying section 23 and an empty box storing section 24.
The seedling box mounting section 21 has a two-tiered structure, and the upper and lower seedling box mounting sections 2
No. 1 (A, B) is provided so as to be inclined so that the front side is higher. The connecting portion 22 is composed of the upper and lower seedling box mounting portions 21 (A,
The rear end of B) is connected to the start end of the seedling box transport unit 23.
The seedling box transporting section 23 has a substantially U-shape in a side view, the rear end of the U-shape is the start end of the seedling-box transfer, and the front end of the U-shape is the end of the seedling-box transfer. . The empty box storage unit 24 is provided in front of the terminal end of the seedling box transport unit 23, and has a space in which a plurality of empty seedling boxes can be stacked and held.

The flow of the seedling box during the planting work will be described. The seedling box 300 placed on the seedling box placing section 21 is supplied to the seedling box carrying section 23 through the connection section 22 and is supplied. The seedling box 300 is intermittently conveyed by 1 pitch p from the start side to the end side by the automatic seedling box feeder 15.
Since the seedling box 300 has flexibility, it can be transported along a curved transportation path. During the transportation, the pot seedlings in the seedling box are pushed backward by the seedling pushing device 16 at the seedling pushing position 27 provided at the lower rear portion of the seedling box feeding unit 23. The empty seedling box discharged from the terminal end of the seedling box transport unit 23 is collected in the empty box storage unit 24.

The seedling box feed base 14 is shared by two adjacent rows, and three sets are provided for one machine. The upper and lower seedling box mounting portions 21 (A, B) each have six seedling box mounting surfaces in the left-right direction, and the entire seedling box mounting portion 21 slides left and right, so that two adjacent seedling box mounting surfaces are provided. Is supplied to the seedling box transport unit 23. The sliding mechanism of the seedling box mounting portion 21 is composed of a rack 30 attached to the rear surface of the seedling box mounting portion 21 in the left-right direction, a pinion 31 that meshes with the rack, and a motor 32 that rotates the pinion in the forward and reverse directions. To be done.

The 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 boxes of the upper seedling box mounting portion 21 (A) and the seedling box of the lower seedling box mounting portion 21 (B) are alternated. And is supplied to the seedling box carrying section 23.

The seedling box feed frame for supporting the seedling box feed base 14 is provided with a vertical frame 36, whose lower end is fixed to the transmission case 10, along the shape of the seedling box feed base, and the lower part of the vertical frame. The horizontal frame 37 is fixed to the above, and the support frames 38 and 39 of the seedling box mounting portion 21 are provided on the upper part of the vertical frame. The vertical frames 36, ... Are arranged at the intervals and the left and right sides of each seedling box feed base 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 portion. It is configured to effectively use.

A seedling box guide 41 having a shape of about 1/4 circle is attached to the front end of the lower seedling box placing portion 21 (B). The tip of the seedling box guide 41 is preferably at the same height as or slightly higher than the front end of the upper seedling box placing portion 21 (A). The seedling box guide 41 serves as a guide for loading the seedling box on the lower seedling box placing portion 21 (B), and the seedling box is loaded as follows (see FIG. 7).

First, the seedling box 300 held by holding the front end side
The rear part is placed on the upper seedling placing part 21 (A) (state). Next, the seedling box 300 is pulled forward while being supported by the seedling box guide 41 (state), and the rear end of the seedling box 300 is dropped between the upper and lower seedling box placing portions 21 (A, B) (state). . Then, the seedling box 300 is supported while being supported by the seedling box guide 41.
Is pushed in and the seedling box is loaded in the seedling box placing portion 21 (B) in the lower stage.

When the seedling box guide 41 is not provided, the lower seedling box placement portion 21 (B) is loaded by inserting the seedling box between the upper and lower seedling box placement portions 21 (A, B). It was not easy because it was necessary, but by providing this seedling box guide 41, the loading operation can be performed while supporting the seedling box with the seedling box guide, so that it becomes easy.

When the seedling box guide 41 projects forward, if other work or habitability is hindered, the seedling box guide 41 is rotatably provided around the mounting base, and the seedling box guide 41 is not used when it is not used. The box guide 41 may be folded backward.

FIG. 8 is a view on arrow A in FIG. The supply side portion of the seedling box transporting section 23 is such that the edge portion 44a of the bottom plate 44 and the holding metal fitting 45 sandwich the ear portion 307 of the seedling box 30.
It is supposed to guide 0. A rectangular opening 45a that is vertically long is formed in the lower portion of the holding metal fitting 45.

FIG. 9 is a sectional view taken along line BB in FIG.
The return side portion of the seedling box transporting section 23 is provided with ear portions 307, 3 of the seedling box.
The rail 4 is provided with rails 47 having a U-shaped cross section for guiding 07, a receiving pipe 48 for receiving the front surface side of the boundary of the seedling box, and a guide pipe 49 fitted to the rear surface side of the boundary of the seedling box.
The left and right sides of the nursery box are sandwiched by 7, 47, and the front and rear sides of the nursery box are sandwiched by the receiving pipe 48 and the guide pipe 49. The spacing between the rails 47, 47 and the spacing between the receiving pipe 48 and the guide pipe 49 are wide enough to allow one seedling box to pass through. With this configuration, the seedling boxes do not overlap each other on the way. .

The automatic nursery box feeder 15 is shown in FIGS.
It has the configuration shown in FIG. Reference numeral 50 denotes an automatic feed rod, which has an automatic feed pawl 51 that is inserted into the opening portion 45a of the holding fixture 45 and engages with the lower wall surface of the nail hole 308 of the seedling box. The automatic feed rod 50 is attached to a roller shaft 54 provided at the tip of the swing arm 53 in a state of being biased toward the seedling box path side via a torque spring 55, and the swing arm 53 is a support shaft. 5
As it swings around 7, it moves up and down. When the automatic feed rod 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 the seedling feeding rod 58. Reference numeral 60 is a stop rod 61 which is inserted into the opening 45a and engages with the upper wall surface of the nail hole 308 of the seedling box.
Have. The stop rod 60 is rotatably supported by a support shaft 62, and its lower end is slidably in contact with the roller shaft 54. Therefore, when the swing arm 53 moves upward, the lower portion of the blocking rod 60 is pushed rightward so that the blocking claw 61 is disengaged from the claw hole 308. Furthermore, the control rod 6
When 0 is pushed for a certain amount or more, this engages with the engaging piece 50a of the automatic feed rod 50, and the automatic feed claw 51 also comes off from the claw hole 308. Further, 65 is a leaf spring brake, which is a hook portion 65a.
Engaging with the claw hole 308 has an effect of preventing the seedling box from dropping due to its own weight. Next, FIGS.
The seedling feeding operation will be described based on 4.

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 (lower end surface of the seedling box in the initial state) of the claw hole 308 of the seedling box is received by 61, and the seedling box 300 is held stationary.

FIG. 13 shows a state in which the swing arm 53 is swung upward, and 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 part of the stop rod 60 is pushed rearward by the roller shaft 54, and the stop claw 61 is also removed from the claw hole 308. By the action of the leaf spring brake 65, the seedling box 300 is held in the same position.

When the swing arm 53 is rotated downward from the state shown in FIG. 13, the automatic feed claw 51 of the automatic feed rod 50 is fitted into the claw hole 308 as shown in FIG. At this point, the stop claw 61 of the stop rod 60 is still out of the claw hole 308. When the swing arm 53 further rotates in this state, the automatic feed claw 51 pushes down the lower wall surface of the claw hole 308 to convey the seedling box 300 by one pitch p. The seedling box at the top falls by its own weight. When the swing arm 53 rotates to the bottom dead center, the regulation by the roller shaft 54 is released, the stopper claw 61 is fitted into the claw hole 308, and the state shown in FIG. 12 is restored.

The seedling box feeder 14 is the automatic seedling box feeder 1 described above.
In addition to 5, a manual seedling box feeding device 69 is provided. Figure 10
Further, reference numeral 70 in FIG. 11 denotes a manual feed rod having a manual feed pawl 71 similar to the automatic feed pawl 51,
It is attached to a roller shaft 74 provided in the middle portion of No. 3 via a torque spring 75 in a state of being urged toward the seedling box transportation path side. Normally, the manual feed rod 70 is in the fixed position shown in FIG. 10, and the state in which the manual feed claw 71 fits into the claw hole 308 of the seedling box and the manual feed claw at a cycle in which the seedling box moves 1 pitch p. 71 is swinging in a state of being 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 1 pitch p. Transport in the direction. When the manual lever 73 is moved a little higher than the fixed position, the roller shaft 74 presses the upper portion 60a of the blocking rod 60, whereby the blocking rod 60 rotates counterclockwise and the blocking pawl 61 comes out of the pawl hole 308. Therefore, the seedling box can be conveyed by the manual seedling box feeder 69.

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 stop rod 60 is engaged with the engaging portion 50a of the automatic feed rod 50.
Since the automatic feed rod 50 is rotated rearward by engaging with, the automatic feed pawl 51 of the automatic feed rod 50 is also disengaged from the pawl hole 308, and the seedling box is allowed to fall freely.

The manual feed rod 70 also functions as a stopper for preventing the seedling box from dropping when the seedling box is loaded. 76 is a support shaft 77
A distal end bent portion 76a is engaged with a projection 70a formed on a side surface portion of the manual feed rod 70 by a stopper arm that is rotatably supported. Stopper arm 7
6 is provided on the path through which the ear portion 307 of the seedling box passes, and is biased by the spring 78 in the 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 the stopper arm 76 shown in FIG.
7, the manual feed rod 70 is free. However, when there is no seedling box on the transport path, the stopper arm 76 rotates to the position shown by the solid line in FIG. 17 due to the contracting force of the spring 78, and the tip bent portion 76a and the protrusion 70a engage, so the manual feed rod is pushed. The movement of 70 is restricted. Therefore, if the seedling box 300 is loaded when the seedling box of the seedling box feed table 14 is empty,
Is temporarily received and held by the manual feed pawl 71 of the manual feed rod 70. By doing so, it is possible to prevent the seedling box from dropping abruptly to the lower part of the seedling box transporting section 23 at the time of loading the seedling box and causing troubles in the seedlings and the seedling box feeding device 15. If you operate the manual lever 73 and lift the manual feed rod 71 a little,
The tip bent portion 76a of the stopper arm and the projection 70a are disengaged and the manual feed rod 70 becomes free, so that the seedling box held 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 in which the spring 78 is loosely fitted is interlocked with the swing arm 53 by the connecting member 81. When the swing arm 53 swings upward, that is, the automatic feed claw 51 and Stopper claw 61 has claw hole 3
When it is disengaged from 08, the spring 78 is compressed and the urging force of the stopper arm 76 is increased. As described above, when the automatic feed claw 51 and the stop claw 61 are disengaged from the claw holes 308 immediately before the seedling feeding, the seedling box 300 is held by the leaf spring brake 65. When it is applied, the leaf spring brake 65
It will not be possible to support it alone. 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 detection switch 93 for detecting the presence or absence of a seedling box is provided between the manual feed rod 70, which is a fall prevention stopper, and the seedling pushing-out position 27, and the detection result is displayed on, for example, the seedling reduction lamp 94 of the center mascot. It is supposed to be 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 portion 21, and the empty box loaded in the empty box storage portion 24 is removed. If the sensing switch 93 is provided at the position of this embodiment, seedlings can be replenished before the seedlings are completely lost, so that plant stalls can be prevented and the manual feed rod 7
Sensing switch 9 when 0 is functioning as a stopper
Since 3 detects the decrease of seedlings, the supplied seedling box can be once received by the manual feed rod 70, and the displacement of the seedling box due to impact or the like can be prevented.

The seedling extruding device 16 includes the seedling box feed base 14 described above.
Is provided with a predetermined number (14 in the illustrated example) of seedling extruding pins 100, which push out the seedlings backward one row at a time from the seedling box located at the seedling pushing position 27. Seedling extrusion pin 10
0, ... are attached to the bar 101 in the left-right direction,
Seedling extrusion rods 102, 10 supporting both ends of the rod.
2 is moved back and forth, and when the seedling pushing pins 100, ... Are projected rearward, 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 constructed as shown in FIG. Reference numeral 105 denotes a gear case, and the base of the seedling pushing rod 102 is slidably supported in the gear case 105. A rack 106 is formed at the base of the seedling pushing rod 102, and a fan-shaped pinion 107 that meshes with the rack is provided in the gear case 105. The pinions 107 and 10 in the left and right gear cases 105 and 105
7 is attached to a common shaft 108, and a swing arm 109 fixedly attached to one end of the shaft 108 and a drive arm 110 attached to a second drive shaft 212 described later are connected by a buffer connecting body 112. ing. Buffer connector 112
Is the cylinder 113 on the swing arm 109 side and the drive arm 11
The rod 114 on the 0 side is slidably fitted to the rod 11
Springs 116 and 117 are interposed between the flange 115 fitted to the intermediate portion of No. 4 and the upper and lower walls of the tubular body 113.

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

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

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

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

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

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

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

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

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

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

The seedling transport belt 19 has two adjacent strips (L,
R) form a set, and the pair of seedling conveying belts 19 (L, R) are symmetrical with each other. The seedling conveying belt 19 is stretched around a pair of rollers 150 and 151, and the belt is always moved in the direction of the arrow when the driving roller 150 rotates in a predetermined direction. Seventeen 14 seedlings transferred from the seedling transfer device 17 are placed on the upper surfaces of the left and right seedling transport belts 19 (L, R). Then, the seedlings are transferred to the seedling transport belt 19 (L,
R) conveys the seedlings to the outside and sequentially supplies the seedlings to the seedling picking position T ₁ of the planting device 12 one by one. Further, below the seedling picking position T ₁ , a guide plate 153 for guiding the seedlings to the field scene when planting by the planting device 12 is provided.

The planting device 12 comprises 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. 24 and 25. In the figure, reference numeral 163 denotes a planting device mounting shaft supported at the rear end of the transmission case 10. A fixed metal 165 is fitted by a key 164 to the front end of the planting device mounting shaft, and a rotary metal is further attached to the stationary metal. The 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 formed around the planting device mounting shaft 163.
The rod actuating cam 168 having the above 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 that is rotatably fitted around a support shaft 173.
It is attached to 74. Further, a gear 175 is formed on the arm 174, and the gear 174 meshes with a gear 178 attached to a planting rod attachment shaft 177. The stud rod 161 is fixedly attached to the stud rod mounting shaft 177 by a cotter pin 179.

When the planting device mounting shaft 163 rotates in a predetermined direction, the rotary case 160 integrated with the shaft also rotates and the planting rod 161 moves while drawing a closed locus T (see FIG. 23). At that time, the rollers 172 and 172 move along the guide groove 168a of the implanting rod actuating cam 168, whereby the arm 174 swings, and the swinging thereof causes the gears 175 and 175 to swing.
It is transmitted to the implantation rod mounting shaft 177 via 178. Therefore, the implantation rod 161 slightly changes its angle during movement. That is, when passing through the seedling picking position T ₁ , it is in a horizontal state and is parallel to the seedling 310 supplied to the seedling picking position T ₁ by the seedling conveying belt 19. Then, the rotary case 160 is rotated downward while maintaining its posture, and the seedlings are guided to the planting position T ₂ through the guide plate 153. After the implantation, by changing the posture so that the implantation rod 161 rotates forward relative to the rotary case 160, the implantation rod 160 operates absolutely as if it were pulled out right above. The semen rod 160 and the seedling are separated without difficulty, and the posture of the planted seedling 310 is not disturbed.

As shown in FIG. 3, the transmission case 10 includes three mission cases 180, which are arranged in parallel.
… By combining the parts of these four mission cases 181, which are added to the space and outer end of the mission case, and the four chain cases 182 that are fixedly connected to the back side of each mission case. Become. Mission case 18
The rear portions of 0, ... Have a cylindrical shape that projects to the left and right, and are fixedly connected to the joint case 181, ... By the cylindrical portions 180b, 180b. Center mission case 180
An input unit 183 is integrally formed in (C). Further, a rolling shaft 184 connected to the planting section mounting device 5 is rotatably supported at the front end of the central mission case 180 (C), and the entire planting section 3 rolls with respect to the main body 2. Supported as possible. Then, one in each of the rear end portions of the two center case cases 182 (2, 3) and inside the rear end portions of the left and right chain cases (1, 4), a total of 6
Individual planting devices 12, ... Are provided.

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

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

The bevel gear 1 is attached to the first drive shaft 186.
91, sprocket wheel 2 for driving each planting device
00, ... and bevel gears 201 for driving the seedling conveying belts,
, And gears 202 for transmitting to each shaft in the mission case main body 180a ,.

The first drive shaft 186 is composed of three shafts 186 (L, C, R) divided into two sections, and each of these shafts is provided with two sprocket wheels 200, 20 in the center.
The structure is such that 0 is connected. By using the sprocket wheels 200, 200 also as a shaft coupling, the number of parts can be reduced.

Chains 205, ... are stretched between the sprocket wheels 200, ... and the sprocket wheels 204, ... mounted on the planting apparatus mounting shafts 163, ..., and the rotational power of the first drive shaft 186 is Each planting device 12,
It is always told to.

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

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

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

The gear 217 and the transmission portion of the second drive shaft 212 are provided with a ridge clutch 230 constructed as follows. The gear 217 is rotatably fitted to the second drive shaft 212, and the clutch body 231 is fitted to the second drive shaft 212 in a non-rotatable and slidable manner so as to face the gear 217.
The 17 claw 217a and the claw 231a of the clutch body 231 are engaged with each other for transmission. Clutch body 23
Since No. 1 is biased toward the gear 217 by the spring 232, the clutch is normally engaged. When the clutch pin 233 is pressed against the tapered surface 231b of the clutch body 231, the claws 217a and 231a of the both are disengaged and the clutch is disengaged. At that time, the clutch is set to be disengaged when the clutch body 231 reaches a predetermined angle. Therefore, the automatic seedling box feeding device 15, the seedling pushing device 16, the seedling delivering device 17, and the seedling dropping device 18 are adapted to engage and disengage the clutch in units of two articles, and when the clutch is disengaged, each of these devices is in a fixed position. Be stopped.

The transmission case 10 is located below the seedling box feed base 14, and is provided with a rolling shaft 18 for connecting to the planting section mounting device 5 at the front end of the central mission case 180 (C).
4 are provided. The transmission case 10, which is also a planting part frame, is preferably provided at this position in view of mounting and transmission of each part of the planting part. Also, as described above, the first drive shaft 1
There are four shafts 86, a counter shaft 211, a second drive shaft 212, and a third drive shaft 213. These shafts are lined up from the rear bottom to the front top in the order described above, and along that line. Each mission case 180, ... Is also inclined forward.

Below the planting section 3, as a float for leveling, a center float 250 located at the center of the left and right sides.
(C) and a side float 250 (L, R) located behind the rear wheels of the machine 2 are provided. Each float 2
50 (L, C, R) has a shape that the front part is wide and the rear part is narrow, and groovers 251 for forming grooves for transplanting seedlings are attached to both left and right sides of the rear part. Float 250
(L, C, R) are pivotally attached to a rear end portion of a float support rod 252 rotatably provided in the transmission case 10 in the vertical direction by a support pin (not shown), and a front portion thereof is provided with an expansion / contraction link 2
It is hung by 55, and the front part moves up and down according to the unevenness of the paddy field.

The center float 250 (C) is a sensor for detecting the height of the paddy field, and the hydraulic valve 2 for controlling the hydraulic cylinder 6 is based on the vertical movement of the center float.
The spool 57 is switched, and the planting unit 3 is controlled to have a constant height with respect to the paddy field. Therefore, the planting depth of seedlings is always kept constant. By rotating the float support rod 252 to change the support height of each float,
The planting depth of seedlings can be adjusted.

The fertilizer application device 4 comprises a hopper-shaped fertilizer storage unit 260 for storing fertilizer, a feeding device 261 for feeding the fertilizer in the fertilizer holding unit downward, and a fertilizer fed from the feeding device for seedling planting. A fertilizer conduit 262 leading to the groove.
The fertilizer conduit 262 extends downward from the feeding device 261 along the lower surface of the empty box collection section and the front surface of the seedling box feeding stand 14.
Further, each shaft 2 provided in the mission case 180
It goes around the lower side of 13, 213, 211, and 186 and extends diagonally rearward substantially parallel to the arrangement of these axes, and its fertilizer discharge port (fertilizer application part) 263 faces the field scene inside the grooving device 251. There is.

During the planting work, when the planting section 3 is lowered to the work position shown in FIG. 1 and the machine 2 is started, the planting section 3
Then, the fertilizer application device 4 is driven, and the fertilizer is supplied to the groove for planting seedlings formed in the field with the progress of the fertilizer, and the seedlings are planted immediately after that.

Since the shafts 213, 213, 211, 186 of the mission case 180, which is a drive unit for the planting section, are arranged in the forward and upward directions, the inclination of the lower part of the fertilizer conduit 262 is relatively large. Fertilizer is satisfactorily transported in the fertilizer conduit. Further, since the discharge port 263 of the fertilizer conduit 262 is located near the seedling planting position T ₂ , the fertilizer-free section at the start of planting is short.

In order to provide the fertilizer application section 263 near the seedling planting position T ₂ while keeping the inclination of the fertilizer conduit 262 above a certain level, it is necessary to bring the fertilizer conduit 262 as close as possible to the first drive shaft 186. Good, for that purpose, the following structure may be adopted.

The structure shown in FIG. 30 and FIG. 31 has a mission case tubular portion 180b containing the first drive shaft 186.
Holding section 270-1 for fitting the fertilizer conduit 262 on the outer peripheral surface of the
Is provided, and the fertilizer conduit 262 is held therein with a part thereof being bitten into the case. This way,
Compared to the case where the mission case tubular portion 180b and the fertilizer conduit are provided separately (illustrated by a chain line in FIG. 30), the distance d
Only the fertilizer conduit 262 can be brought closer to the first drive shaft 186. Although the cross-sectional area of the holding portion 270-1 is small, it is only a small portion, so the strength of the case is not impaired.

In the structure shown in FIG. 32, the holding portion 270-2 has a completely circular hole, and the fertilizer conduit 262 is inserted therethrough.

In the structure shown in FIG. 33, the outer peripheral surface of the mission case tubular portion 180b is recessed inward, and a donut-shaped boss 271 is fixed thereto to hold the fertilizer conduit holding portion 270-3.
I am trying.

[0066]

As is apparent from the above description, when the fertilizer transplanter is constructed as in the present invention, the lower part of the fertilizer conduit can be made to have a large inclination, and the fertilizer flow in the fertilizer conduit can be improved. At the same time, the lower end of the fertilizer conduit reaches the rear, the fertilizer application section and the seedling planting position approach, and the fertilizer-free section at the start of planting can be shortened.

[Brief description of drawings]

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

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

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

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

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

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

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

FIG. 8 is a view on arrow A in FIG.

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

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

11 is a view on arrow C in FIG. 9. FIG.

FIG. 12 is an explanatory diagram 1 of the seedling feeding operation.

FIG. 13 is a second diagram for explaining the seedling feeding operation.

FIG. 14 is an explanatory diagram 3 of the seedling feeding operation.

FIG. 15 is a first explanatory diagram of 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 the main part of the planting part.

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 dropping device.

FIG. 21 is a front view of a seedling holder and a seedling dropping 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 cross-sectional view of the planting device.

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

FIG. 26 is a developed sectional view of a transmission case.

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

28 is a view on arrow D in FIG. 28. FIG.

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

FIG. 30 is an external view of another example 1 of the fertilizer conduit holding portion.

FIG. 31 is a cross-sectional view of another example 1 of the fertilizer conduit holding portion.

FIG. 32 is a cross-sectional view of another example 2 of the fertilizer conduit holding portion.

FIG. 33 is a cross-sectional view of another part 3 of the fertilizer conduit holding portion.

[Explanation of symbols]

 1 Fertilizer rice transplanter 2 Main unit 3 Planting unit 4 Fertilizer application device 5 Planting part mounting device 10 Transmission case 12 Planting device 14 Seedling box feeder 15 Automatic seedling box feeder 16 Seedling extrusion device 17 Seedling delivery device 18 Seedling dropping device 19 Seedling conveyor belt 180 Mission case (planting part drive case) 186 First drive shaft 212 Second drive shaft 213 Third drive shaft 260 Fertilizer storage part 262 Fertilizer conduit 263 Fertilizer outlet (fertilizer application part) 300 Seedling box 310 Seedling

Front page continuation (72) Inventor Sumi Fukushima 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. ) Inventor Shinichiro Yano No. 1 Hachikura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A structure in which a planting part is attached to the rear of a traveling vehicle body, and fertilizer is guided by a fertilizer conduit from a fertilizer storage part provided at the upper rear part of the traveling vehicle body to a fertilizing part provided in front of the seedling planting position. In the fertilizer transplanter described above, a plurality of left and right drive shafts that drive each part of the planting section are arranged so that the front side shafts are positioned higher, and the lower part of the fertilizer conduit is driven below these drive shafts. A fertilizer transplanter characterized by being arranged almost parallel to the axis arrangement.