JPH07135812A - Seedling feeder - Google Patents

Abstract

PURPOSE:To provide a seedling feeder ensuring the seedling boxes on a table therefor to be fed smoothly to the next process even if the slope of the table is gentle, also preventing the seedling in the boxes on the table from slipping down during revolution. CONSTITUTION:The objective seedling feeder equipment with (A) a seedling box conveying section 23 and (B) seedling box tables 21(A), 21(B) connected to the end on the upstream side of the conveying direction for the section 23 and to place seedling-contg. boxes, is so designed that the tables 21(A), 21(B) are inclined so that the seedling box conveying section 23 side come below the tables, and these tables are equipped with a roller 30 free rotate and such a changeover means is provided that the roller 30 is projected during planting operation so that the upper end of the roller 30 comes above the bottom of the tables, while the roller 30 is retracted during planting operation shutdown so that the upper end of the roller 30 comes below the bottom of the tables.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling feeding device such as a rice transplanter using pot seedlings grown in a seedling raising pot of a seedling box.

[0002]

2. Description of the Related Art As a seedling feeding device for rice transplanters, seedlings grown in a flexible seedling box in which a large number of seedling raising pots are connected are loaded together with the seedling box, and the seedling box is moved along a predetermined transport route. The seedling extruding pin is inserted into the seedling raising pot from the hole formed at the bottom of the seedling raising pot and the seedlings are extruded, and the extruded seedlings are planted one by one. Configurations have been developed that supply position.

This type of seedling supply device is provided with a seedling box placing section for placing a seedling box containing seedlings, which is connected to an end portion on the upstream side in the feeding direction of a seedling box feeding section for feeding the seedling boxes. The seedling boxes on the seedling box placing section are sequentially sent to the seedling box transporting section as the seedling boxes are transported through the seedling box transporting section.

[0004]

The seedling box mounting portion is inclined so that the seedling box slides down toward the seedling box transporting section due to its own weight. By the way, the seedling box mounting part is made long in front and back so that as many seedlings as possible can be held on the seedling box mounting part. For this reason, if the inclination is too large, the position of the upper end of the seedling box mounting portion becomes high, the overall height of the machine body becomes large, and the center of gravity becomes high, resulting in poor stability. However, if the inclination is made smaller, the seedling box will not slide down on the seedling box mounting portion. Therefore, it is necessary to devise a technique for allowing the seedling box on the seedling box placing section to slide down favorably without making the inclination of the seedling box placing section too large. In addition, it is necessary to prevent the seedling box on the seedling box mounting portion from abruptly moving due to speed changes and vibrations during turning and the like so that the seedlings inside do not fall out.

[0005]

In order to solve the above problems, the present invention has the following constitution. That is, the seedling supply device according to the present invention is a seedling supply device such as a rice transplanter configured to load seedlings grown in a seedling box having a nursery pot together with a seedling box along a predetermined transport path. In addition to transporting the seedlings, the seedling box transporting section that pushes out the seedlings from the seedling raising pot during the transport and the upstream end of the seedling box transporting section in the transporting direction are provided, and the seedling box containing the seedlings is placed. A seedling box placing section is provided, the seedling box placing section is inclined so that the seedling box carrying section side is at a low position, and a rotatable roller is provided on the seedling box placing section, and the roller is used during planting work. Extend the roller so that the upper end of it is higher than the bottom of the seedling box placing part, and retract the roller so that the upper end of the roller is lower than the bottom of the seedling placing part when the planting work is stopped. It is characterized by the provision of switching means .

[0006]

[Operation] During planting work, the upper end of the roller protrudes above the bottom of the seedling box placing section, and the roller supports the seedling box on the seedling placing section from below, so the inclination of the seedling placing section is small. However, the seedling box on the seedling box mounting section slides down favorably toward the seedling box transport section. Also, when the planting work is stopped, the upper end of the roller retracts lower than the bottom of the seedling box mounting part, so the seedling box on the seedling box mounting part does not slip too much, preventing the seedlings from falling off due to sudden movement of the seedling box. it can.

[0007]

1 to 24 show an embodiment of the present invention. This transplanter 1 is a main unit 2 which is a four-wheeled vehicle.
A planting section 3 for 6-row planting and a fertilizer applicator 4 are attached to the plant, and the whole is configured as a riding-type fertilizer rice transplanter. Planting part 3
Is attached to a parallel link type planting part attachment device 5 provided at the rear of the main body 2 which is a traveling vehicle body, and is vertically movable with respect to the main body 2. The planting part mounting device 5 is moved up and down by the hydraulic cylinder 6.

The planting section 3 is a system for loading seedlings together with a seedling box, and a transmission case 10 also serving as a planting section frame, a planting device 12 for the number of planting lines, and a seedling taking position of the planting apparatus. 1 seedling
Each device for supplying seedlings for supplying each plant is assembled. Each device for supplying seedlings includes a seedling box feed base 14, a seedling pushing device 16 for pushing seedlings out of the seedling box at an appropriate position on the seedling box feeding route of the seedling box feed base, and a seedling pushed by the seedling pushing device downwards. Seedling delivery device 17 to be carried to the seedling, seedling drop device 18 for assisting the seedling delivery device, the seedling delivery device 17
The seedling transport belt 19 and the like for transporting the seedlings received from the plant to the seedling picking position of the planting device 12.

The seedling box used has the structure shown in FIGS. 25 to 27. 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. The seedling extrusion hole 303 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. Left and right edges of the seedling box are guide ears 307, and claw holes 308 having a square shape in plan view are formed at the ears at the same pitch as the vertical pitch p of the pot. A tip portion 309 of the ear portion 307 is bent downward at a substantially right angle. The seedling box 300 is integrally formed of a thin synthetic resin material and has flexibility in the front-rear direction and the left-right direction as a whole. Floor soil is put in the pots 301, ..., Seeded, and grown until the grown seedlings 310 have a certain size.

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

The seedling box feed base 14 is shared by two articles, and a total of three feed boxes 14 are provided in parallel. Each seedling box feeding stand 14 includes a seedling box placing section 21, a seedling box carrying section 23, and an empty box storing section 25. The seedling box mounting portion 21 has a two-stage structure, and the upper and lower seedling box mounting portions 2
1 (A, B) are provided in parallel in a state in which the front side is inclined so that the front side is higher. The upper seedling box placing section 21 (A) has a space for arranging two seedling boxes 300 front and back, and the lower seedling box placing section 21 (B) has a space for arranging three seedling boxes 300 front and back. . Upper seedling box placement section 21 (A)
In the confluence portion 21a of the lower seedling box mounting portion 21 (B), the seedling box placed on the upper seedling box mounting portion 21 (A) slides backward and the lower seedling box mounting portion 21 ( A diversion device (not shown) is provided to switch the seedling box placed in B) to a state of sliding backward. Seedling box carrier 23
Has a substantially U-shape in a side view, and the rear end of the U-shape is connected to the rear end of the seedling box mounting portion 21. Empty box storage 25
Is provided on the front side of the seedling box transport unit 23 and has a space for stacking and holding a plurality of empty seedling boxes.

The flow of the seedling boxes during the planting work will be described. The seedling boxes 300 placed on the seedling box placing section 21 are supplied to the seedling box conveying section 23, and the supplied seedling boxes 300 are supplied.
Are intermittently transported along the U-shaped transport path by 1 pitch p. Since the seedling box 300 has flexibility, it can be transported along a curved transportation path. At the seedling pushing position 27 during transportation, the pot seedlings in the seedling box are pushed backward by the seedling pushing device 16. The empty seedling box after the seedlings are pushed out is discharged forward from the terminal end of the seedling box transport unit 23 and is collected in the empty box storage unit 25. Initially, the seedling boxes placed on the upper seedling box placing section 21 (A) are supplied to the seedling box transporting section 23, and when the feeding is completed, the diversion device is switched, and subsequently the lower seedling box placing section is placed. The seedling box placed on the section 21 (B) is supplied to the seedling box transporting section 23.

The seedling box mounting portion 21 (A, B) is provided with rollers 30 for improving the sliding of the seedling box (see FIGS. 6 to 8). The rollers 30 are one pair on the left and right, and the pair of rollers 30, 30 is inclined with respect to the sliding direction (front and rear) of the seedling box 300 so as to have a V shape in a plan view. Both ends of one roller 30 are offset by about 1 pitch p of the seedling raising pot. Further, the rollers 30, ... Are arranged so that the seedling box 300 on the seedling box placing portion 21 overlaps with at least one set of rollers in a plan view.

Each of the rollers 30, ... Is borne by the tip of a switching arm 31 ,. And the adjacent switching arm 3
.. are connected to each other by a connecting member 32 ,. The connecting members 32 ,.
Is pulled to the side of the bottom plate 21a. In a state where no external force is applied to the switching arms 31, ..., The switching arms 31 ,.
The roller 30 is rotated to the side a, and the rollers 30, ...
1b, ..., The upper part thereof projects above the upper surface of the bottom plate 21a. Therefore, the pair of rollers 30, 3
The seedling box 300 is placed on 0. At that time, since the rollers 30, ...
Does not enter between the pots 301 and is kept at the same height at all times, so that the seedling box 300 slides backward well without vibrating up and down.

Further, the switching arms 31, ... Are interlocked with a planting clutch lever 36 via a wire 35. When the planting clutch lever 36 is operated to engage the planting clutch, the switching arms 31, ... Are pulled away from the bottom plate 21a, whereby the rollers 30 ,.
Retract below the top surface of. Then, the seedling box 300 is placed directly on the bottom plate 21a, and the seedling box is placed on the roller 3a.
Sliding of the seedling box is worse than when it is placed on top of 0,30. In this way, the rollers 30, ... Are interlocked with the planting clutch lever 36 to move the rollers 30, ...
By providing switching means for entering and exiting from b, ...
The seedling box on the seedling box placing section 21 slides well during the planting operation, and when the planting operation is stopped, the seedling box on the seedling box placing section 21 automatically switches so that the slipping becomes poor.

The seedling box carrying section 23 is constructed as shown in FIGS. 9 and 10, and the seedling box 300 is sandwiched by the guide fences 40, 40 provided on both sides of the seedling box carrying path so as to sandwich the ears 307, 307. It is supposed to guide you.

Reference numeral 41 denotes a brake plate, which is provided in the arcuate introduction portion 23a of the seedling box carrying section and is supplied to the seedling box carrying section 23 in synchronization with the operation of the shut-off claw 45 described later.
It comes into contact with the upper surface of 7, 307, and exerts an action of damping the sudden drop of the seedling box 300. An upper end of the brake plate 41 is fixed to the guide fence 40 and a lower end of the tension spring 5 described later is attached to the lower end.
A pin 42 for hooking 2 is fixed. Then, it is pulled by the spring 43 in the direction opposite to the seedling box transport path side.

Reference numeral 45 is a blocking claw, and a claw portion 45a engaging with the upper wall surface of the claw hole 308 of the seedling box is formed at the upper end portion.
The blocking claw 45 is pivotally supported by a slide member 47 by a support shaft 46 so as to be swingable in the front-rear direction, and is biased by a torque spring 48 toward the seedling box transportation path side (rearward). The rear surface of the slide member 47 is slidably guided by the guide member 49, and an elongated hole 50 is formed in the slide member 47 in the vertical direction. The stopper pin 51 fixed to the guide fence 40 is inserted into the elongated hole 50. It is fitted. The slide member 47 is biased upward by a tension spring 52 whose upper end is hooked on the pin 42. Therefore,
The blocking claw 45 includes the stopper pin 51 and the upper and lower ends of the elongated hole 50.
Can be slid up and down within the engagement range, and is normally located at the upper limit of the sliding range.

In the range where the blocking claw 45 slides,
On the surface of the guide fence 40 facing the blocking claw 45, the claw portion 4
A ratchet-shaped claw plate 53 that engages with the claw portion 45a is provided so that 5a can slide downward and cannot slide upward.

A cam lever 56 is attached to the lower end of the blocking claw 45 so as to be rotatable left and right by a support shaft 55 in the front-rear direction. The cam lever 56 is always held in the hanging position by the action of the torque spring 57. However, when the tip end of the cam lever 56 receives a force to push it upward, it can escape to the outside against the action of the torque spring 57. Has become. A cutoff release pin 58 is provided at a position facing the lower end portion of the cam lever 56 when the cutoff claw 45 is near the lower limit position and the cam lever 56 is in the hanging position, and is interlocked with the seedling pushing pin 100 ,. Has been.

Reference numeral 60 denotes a feed claw, which is inserted into the opening 40a of the guide fence 40 from the rear side, and has a claw portion 60a which engages with the lower wall surface of the claw hole 308 of the seedling box at the upper end portion.
The feed claw 60 is attached to a roller shaft 63 provided at the tip of the crank arm 62 in a state of being urged toward the guide fence 40 side via a torque spring 64, and the crank arm 62 is centered on the support shaft 66. It is designed to move up and down as it rocks. When the feeding claw 60 is at the lower limit position, the claw portion 60a is set to be located at the seedling pushing position 27. The crank arm 62 is driven via the seedling feeding rod 68.

Reference numeral 70 denotes a stop claw, which has a claw portion 70a which is inserted from the rear into the opening 40a of the guide fence 40 and engages with the upper wall surface of the claw hole 308 of the seedling box. This stop claw 70
Is rotatably supported by the support shaft 71 while being urged toward the guide fence 40 by the torque spring 72. Since the lower end portion thereof is slidably in contact with the roller shaft 63, when the crank arm 62 pivots upward, the lower portion 70b of the stopper claw 70 is pushed backward, and the stopper claw 7 is pressed.
0 comes off the claw hole 308.

Reference numeral 73 is a brake body, whose tip 73a is urged by a spring 74 so as to engage with the claw hole 308, and has a function of preventing the seedling box from dropping by its own weight.

The seedling box 300 supplied to the seedling box transport section 23
Is received by the blocking claw 45 waiting at the upper limit position (see FIG. 11). The blocking claw 45 that has received the seedling box moves downward together with the slide member 47 while engaging the claw portion 45a with the claw plate 53 according to the weight of the seedling box (see FIG. 12). The shock caused by the drop of the seedling box is absorbed by the tension spring 52. At the same time, the brake plate 41 extends and contacts the ears 307 and 307 of the seedling box 300 to brake the seedling box 300. When the downward movement is completed, the blocking claw 45 is stopped at that position by the engagement between the claw portion 45a and the claw plate 53. Then, when the blocking release pin 58 projects and the cam lever 56 is pushed backward during the seedling extrusion, the blocking claw 45 is disengaged from the seedling box transport path, and the seedling box slides down by its own weight and is received by the brake body 73 or precedes. Place it on the seedling box. The blocking claw 45 that has released the seedling box is pulled back by the tension spring 52 (FIG. 13).
reference).

When the blocking claw 45 moves downward, if the blocking release pin 58 is in a protruding state, the cam lever 56
When the tip end of the contact lever comes into contact with the cutoff release pin 58, the cam lever escapes to the outside, so that the downward movement of the cutoff pawl 45 is not disturbed.

FIG. 14 shows one state during the seedling box carrying process,
The state in which the crank arm 62 swings downward is shown. The claw portions 60a, 70a of the feed claw 60 and the stop claw 70 are inserted into the opening 40a of the guide fence 40.
By 0, 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, and the seedling box 300 is held stationary.

FIG. 15 shows a state in which the crank arm 62 swings upward, and when the feed claw 60 moves upward, the claw portion 60a slides along the upper wall surface of the claw hole 308, and the claw portion 60a is moved. The roller shaft 63 separates from the claw hole 308.
The lower portion 40b of the stopper claw 70 is rotated rearward by being pushed by, and the stopper claw 70 is also removed from the claw hole 308. By the action of the brake body 73, the seedling box 300 is held in the same position.

When the crank arm 62 rotates downward from the state shown in FIG. 15, as shown in FIG.
0a fits in the claw hole 308. At this point, the claw portion 70a of the stopper claw 70 is still out of the claw hole 308. When the crank arm 62 further rotates downward in this state, the claw portion 60a pushes down the lower wall surface of the claw hole 308 to convey the seedling box 300 by one pitch p. When the crank arm 62 rotates to the bottom dead center, the regulation by the roller shaft 63 is released, and the stopper claw 70 fits into the claw hole 308.
Return to the state of.

When the seedling box sliding rollers 30, ... Are interlocked with the operation of the crank arm 62 so that the rollers 30, ... Withdraw when the seedling box is fed, the stop claw 70 is disengaged. With this, a sudden force is not applied to the seedling box from above, and it is possible to prevent the seedling box from overstroke.

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

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

The buffer connecting body 112 functions as a safety device, and when an external force is applied to the seedling pushing pins 110, ..., The force is absorbed by the buffer connecting body 112, so that the mission damage 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, ribs 126, 126 are formed at the rear end portions of the side wall surfaces, and a resistance plate 127 is provided at the bottom surface portion. The resistance plate 127 is rotatably attached to the shaft 128, and is biased upward by a spring 129. When the seedling is pushed into the recess 125a, the pot portion of the seedling pushes down the resistance plate 127. Seedling recess 125
When it is completely set in a, the resistance plate 127 projects above the bottom surface of the recess 125a, so that the seedling cannot be pulled out forward.

The drive mechanism of the seedling delivery device 17 connects the swing arm 131 attached to the support shaft 122a of the lower links 122 and 122 and the drive arm 132 attached to the second drive shaft 212 by a 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. The links 135 and 136 in FIG.
2 is a stopper that regulates the vertical rotation range of 2.

By the action of the drive mechanism, the pair of left and right links 121, 121, 122, 122 swing up and down, and the seedling holder 125 causes the seedling receiving position (E) and the seedling releasing position (FG) in FIG. Move between. Seedling holder 125 is F-
When it is at the midpoint of G, the connecting shaft 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,
19 is branched so that it can be inserted into ..., Each tip branching portion is bent as shown in FIG. 19 in a side view, and the seedling removing portion 141a that receives the bottom of the seedbed 310a and the seedling tapping portion 141b that abuts on the upper surface of the seedbed 310a. Are formed.

The L-shaped arm 140 is rotatably supported by the support shaft 143. Then, a seedling 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 conveying belt 19 has two adjacent strips (L,
R) form a set, and the pair of seedling conveying belts 19 (L, R) are symmetrical with each other. The seedling conveying belt 19 is stretched around a pair of rollers 150 and 151, and the belt is always moved in the direction of the arrow when the driving roller 150 rotates in a predetermined direction. Seventeen 14 seedlings transferred from the seedling transfer device 17 are placed on the upper surfaces of the left and right seedling transport belts 19 (L, R). Then, the seedlings are transferred to the seedling transport belt 19 (L,
R) conveys the seedlings to the outside and sequentially supplies seedlings one by one to the seedling picking position T ₁ of the planting device 10. Further, below the seedling picking position T ₁ , a guide plate 153 is provided for guiding the seedlings to the field scene when planting by the planting device 10.

The planting device 12 comprises a rotary case 160 which is circular 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. 23 and 24. 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 therewith also rotates and the planting rod 161 moves while drawing a closed locus T (see FIG. 22). 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. Separation of the basil 160 and the seedling is performed without difficulty, and the posture of the planted seedling 310 is not disturbed.

The transmission case 10 is, as shown in FIG.
Input unit case 180, 3 cam cases 181, ...
And each of the four chain cases 182, ... Are combined. Input section case 180 and cam case 1
The rear part of 81, ... And the front part of the chain case 182, ... Are cylindrical, and the parts are joined and integrated in this cylindrical part. The cam cases 181, ... Are shared by two adjacent rows, but the central cam case 181 (C) has a short left cylindrical portion, and the input portion 18 is provided in this portion.
0 is set. Then, a total of six planting devices 12, one at each of the rear end portions on both sides of the center two chain cases 182 (2, 3) and the rear end portions of the left and right chain cases (1, 4) are provided. It is provided.

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 includes a hopper 26 for storing fertilizer.
0 and a feeding device 261 for feeding the fertilizer in the hopper downward.
And a fertilizer pipe 262 for guiding the fertilizer fed from the feeder to a groove for planting seedlings. Fertilizer pipe 262
Extends downward from the feeding device 261 along the lower surface of the empty box collecting section and the front surface of the seedling box feed base 14, and further, the lower end of the seedling box feed base 14 and the input case 151 or the transmission pipe 152 of the transmission case 10. , 152, and extends rearward, and its fertilizer discharge port 263 faces the field scene inside the grooving device 251.

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
And, the fertilizer application device 4 is driven, and the seedlings are planted in the seedling planting grooves formed in the field with the progress, and the fertilizer is sprayed in the vicinity thereof.

[0049]

As described above, in the seedling feeding device according to the present invention, since the rollers support the seedling box of the seedling box mounting portion from below during the planting work, even if the inclination of the seedling box mounting portion is gentle. ,
The seedling boxes are now being satisfactorily transported to the nursery box transport section.
In addition, when the planting work is stopped, the roller retracts and the seedling box is directly supported on the bottom plate of the seedling box mounting part, so the slipping of the seedling box becomes worse and the seedling box does not move suddenly when turning. , The seedlings can now be prevented from falling off.

[Brief description of drawings]

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

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

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

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

FIG. 5 is a plan view of the right side portion of the planting section.

FIG. 6 is a plan view of a main part of a seedling box mounting section.

FIG. 7 is a side view showing a roller protruding state of a main part of the seedling box mounting part.

FIG. 8 is a side view showing a roller retracted state of a main part of the seedling box mounting part.

FIG. 9 is a rear view of the seedling box carrying section.

FIG. 10 is a side view of a seedling box carrying section.

FIG. 11 is an explanatory diagram 1 of the operation of the blocking claw.

FIG. 12 is a second explanatory diagram of the operation of the blocking claw.

FIG. 13 is a third explanatory diagram of the operation of the blocking claw.

FIG. 14 is an explanatory diagram 1 of a seedling feeding operation.

FIG. 15 is a second diagram for explaining the seedling feeding operation.

FIG. 16 is an explanatory diagram 3 of the seedling feeding operation.

FIG. 17 is a side view of the main part of the planting part.

FIG. 18 is a side sectional view of the seedling pushing device.

FIG. 19 is a side sectional view of the seedling delivery device and the seedling dropping device.

FIG. 20 is a rear view of the seedling holder and the seedling removing arm.

FIG. 21 is a cross-sectional view of a mounting portion of a seedling removing arm and a seedling tapping arm.

FIG. 22 is a side view of the planting device.

FIG. 23 is a cross-sectional view of the planting device.

FIG. 24 is a side view showing the internal structure of the planting device.

FIG. 25 is a plan view of a seedling box.

FIG. 26 is a view on arrow A in FIG. 25.

FIG. 27 is an enlarged plan view of a seedling raising pot.

[Explanation of symbols]

 1 Rice transplanter 2 This machine 3 Planting part 4 Fertilizer application device 12 Planting device 14 Seedling box feeding stand 21 Seedling box placing part 23 Seedling box transfer part 30 Roller 31 Switching arm (switching means) 300 Seedling box 301 Seedling raising pot 310 Seedling

Claims (1)

[Claims] 1. A seedling feeding device such as a rice transplanter configured to load seedlings grown in a seedling box having a seedling raising pot together with the seedling box along with a predetermined feeding route. A seedling box carrying section for pushing seedlings out of the seedling raising pot in the middle of carrying, and a seedling box carrying section for connecting a seedling box containing seedlings, which is provided by being connected to an end on the upstream side in the carrying direction of the seedling box carrying section. The seedling box mounting section is inclined so that the seedling box carrying section side is at a lower position, and a rotatable roller is provided on the seedling box mounting section, and the upper end of the roller is a seedling box at the time of planting work. A switching means was provided so that the roller is projected so as to be higher than the bottom surface of the placing section, and when the planting work is stopped, the roller is retracted so that the upper end of the roller is lower than the bottom surface of the seedling box placing section. Seedling supply device characterized by.