JP2001157507A - Transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in construction that it is difficult to load a carrying part for reserve nursery boxes with the many reserve nursery boxes because the carrying part for the reserve nursery boxes is arranged aslant back and forth in a rice transplanter constructed so as to load a planting part with seedlings raises in the nursery boxes having flexibility together with the nursery boxes, push out the seedlings from the nursery boxes at a suitable position in a prescribed conveying route and feed the seedlings to a seedling uprooting part of an implanting rod while conveying the nursery boxes along the conveying route, having the carrying part for the reserve nursery boxes aslant back and forth and arranged so as to connect to the starting end of the conveying route and constructed so that the nursery boxes on the carrying part for the reserve nursery boxes are fed to the conveying route by the own weight thereof. SOLUTION: This tranplanter is composed by installing a moving part for the reserve nursery boxes in which the plural nursery boxes are moved in a hung state and successively feeding the nursery boxes hung in the moving part for the reserve nursery boxes to the conveying starting end of the conveying route of the planting part in the transplanter lading the planting part with the seedlings raises in the nursery boxes having flexibility together with the nursery boxes, taking out the seedlings from the nursery boxes at the suitable position in a prescribed conveying route and transplanting the seedlings into a field while conveying the nursery boxes along the conveying route.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the supply of a spare seedling box in a transplanter in which seedlings grown in a flexible seedling box are loaded into a planting section together with a seedling box.

[0002]

2. Description of the Related Art Seedlings grown in a flexible seedling box are loaded into a planting section together with a seedling box, and the seedling box is transported along a predetermined transport path, and the seedling box is placed at an appropriate position on the transport path. There is a rice transplanter configured to extrude seedlings from a plant and supply the seedlings to a seedling picking position of an implantation rod. This type of rice transplanter is provided with a preliminary seedling box mounting portion which is inclined before and after pre-loading a seedling box containing seedlings, connected to the start end of the transport path, and the seedling box of the preliminary seedling box mounting portion has its own weight. To be transported to the transport path.

[0003]

However, since the spare seedling box mounting portion is disposed to be inclined forward and backward, it is difficult to stack a large number of spare seedling boxes.

[0004]

According to the first aspect of the present invention,
The seedlings grown in the flexible seedling box 300 are loaded into the planting section 3 together with the seedling box 300, and the seedling box 300 is transferred to the predetermined transport path 2
In the transplanting machine which takes out seedlings from the seedling box 300 at an appropriate place on the transfer route 23 and transfers the seedlings to the field while transporting the seedlings 300 in the transfer path 23, a spare seedling box moving unit which moves in a state where the plurality of seedling boxes 300 are suspended. 280, and a transplanter configured to sequentially supply the seedling boxes 300 suspended by the spare seedling box moving unit 280 to the transfer start end of the transfer path 23 of the planting unit 3. The invention according to claim 2 is the transplanter according to claim 1, wherein the upper portion of the seedling box 300 is locked by the spare seedling box moving section 280 and suspended in a substantially vertical state. In the invention, the spare seedling box moving unit 28
0 is provided above the planting section 3.

[0005]

According to the first aspect of the present invention, the seedlings grown in the flexible seedling box 300 are planted together with the seedling box 300 in the planting section 3.
The seedling box 300 is transported along a predetermined transport path 23, and the seedling box 300 is removed from the seedling box 300 at an appropriate position on the transport path 23 and transplanted to a field. A spare seedling box moving unit 280 that moves in a suspended state is provided, and the seedling boxes 300 suspended by the spare seedling box moving unit 280 are sequentially transferred to the transfer start end side of the transfer path 23 of the planting unit 3. Since the transplanter is configured to be supplied, the preliminary seedling box moving unit 28
Seedling box 300 hung at 0
3 can be sequentially supplied to the transport start end side, so that the seedling planting operation can be performed continuously and the work efficiency is good.

The second aspect of the present invention provides a spare seedling box moving unit 2
Since the upper part of the seedling box 300 is locked to the 80 and is suspended in a substantially vertical state, the transplanter according to the first aspect is provided. Many spare seedling boxes can be loaded even in a small space.

[0007] The invention according to claim 3 provides a spare seedling box moving unit 2
3. The method according to claim 1, wherein said step (b) is provided above said planting section.
Since the transplanting machine described above is used, in addition to the effects of the invention according to claim 1 or 2, it is possible to stack many spare seedling boxes by effectively utilizing the space above the planting section 3. And contribute to the miniaturization of the aircraft.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 18 show one embodiment of the present invention. The transplanter 1-1 includes a front wheel 2a,
A 6-row planting section 3 and a fertilizer 4 are mounted on a traveling body 2 which is a four-wheel traveling vehicle having a rear wheel 2a and rear wheels 2b, 2b, and is configured as a riding type fertilizer rice transplanter as a whole. . The planting section 3 is mounted on a parallel link type planting section mounting device 5 provided at the rear of the traveling vehicle body 2, and is movable up and down with respect to the traveling vehicle body 2. The planting section mounting device 5 is moved up and down by a hydraulic cylinder 6.

The planting section 3 is of a type in which seedlings are loaded together with the 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 picking position of the planting apparatus. 1 seedling
Each device for supplying seedlings for supplying each plant is assembled. The seedling box feeder 14, a seedling box automatic feeder 15 provided in the seedling box feeder, and a seedling pushing device 16 for pushing seedlings from the seedling box at the seedling pushing position of the seedling box feeder 14 include the seedling box feeders. A seedling transfer device 17 for transporting the seedlings extruded by the seedling pushing device downward, a seedling removing device 18 for assisting the seedling transfer device, and a seedling picking position of the planting device 12 for receiving the seedlings received from the seedling transfer device 17. And a seedling transport belt 19 for transporting the seedlings.

The seedling box used has the structure shown in FIGS. 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. The seedling pushing hole 303 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 serve as guide ears 307, and the claw holes 308 are formed in the ears at the same pitch as the vertical pitch p of the pot, as viewed in plan. The tip 309 of the ear 307 is bent downward substantially at a right angle. The seedling box 300 is integrally formed of a thin synthetic resin material, and has flexibility in the front-back and left-right directions as a whole. The seedlings are put into pots 301,..., And seeded, and grown up to adult seedlings 310 of a certain size.

Hereinafter, each part of the planting section 3 will be described.
The seedling box feeder 14 is shared by two sections, and a total of three seedling box feeders are provided. Each seedling box feeder 14 includes a seedling box transport unit 23, an empty box return unit 24, and an empty box storage unit 25. 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 return section 24 is connected to the end of the seedling box transport section 23. Under the upper end of the empty box return section 24, an empty box storage section 25 having a space in which a plurality of empty seedling boxes can be stacked and held is provided.

The seedling box flow during the planting operation will be described. The seedling box 300 supplied to the seedling box transport section 23 is intermittently transported from the start side to the end side by one pitch p by the seedling box automatic feeder 15. Is done. Since the seedling box 300 has flexibility, it can be transported along a curved transport path. At the seedling pushing position in the middle of transport, the pot seedling in the seedling box is pushed backward by the seedling pushing device 16. The seedling box after the seedlings are pushed out is collected in the empty box storage section 25 through the empty box return section 24.

The automatic seedling box feeder 15 has the structure shown in FIGS. Reference numeral 45 denotes a holding member, which guides the seedling box with the bottom plate and the holding member 45 sandwiching the ear 307 of the seedling box. A vertically long rectangular opening 45a is formed in the lower part of the presser fitting 45.

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. This automatic feed rod 50
The swing arm 53 is attached to a roller shaft 54 provided at the tip end 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 swings around a support shaft 57. It moves up and down with it. 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. The swing arm 53 is driven via a seedling feed rod 58.

Reference 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 the support shaft 62 in a state where the stop rod 60 is urged toward the seedling box path side by the torque spring 63. The lower sliding portion 60a is
When the swing arm 53 is slidably contacted and the swing arm 53 is moved 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.

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. FIG. 5 shows the swing arm 5
3 shows a state in which the automatic feed claw 51 of the automatic feed rod 50 and the stop claw 61 of the stop rod 60 are opened.
5a, and the claw hole 3 of the seedling box is
The upper wall surface 08 (the lower end surface of the seedling box in the initial state) is received, and the seedling box 300 is held in a stationary state.

FIG. 6 shows a state in which the swing arm 53 is swung upward. When the automatic feed rod 50 is moved 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, and is pressed by the roller shaft 54, so that the lower portion of the stopping rod 60 is rotated backward, and the stopping claw 61 is also disengaged from 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. 6, 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 control claws 61 of the control rod 60 are still out of the claw holes 308. When the swing arm 53 further rotates in this state,
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 and the stopping claw 6 is released.
1 fits into the claw hole 308 and returns to the state of FIG.

As described above, the seedling box is transferred to the seedling box transport section 23.
, And the seedlings are extruded from the pots 301,. The empty box is pushed up above the transport path of the seedling box transport section 23, and is discharged from the distal end of the empty box return section 24 to the empty box storage section 25.

Immediately before the discharge, as shown by a chain line in FIG. 8, the tip of the empty box is bent downward. that time,
If the empty boxes 300 (1 to n) are already stored in the empty box storage unit 25 to the height shown in the figure, the empty boxes 300 (n +
The tip of 1) is caught by the empty box 300 (n) at the top,
The top empty box 300 (n) is pushed forward, or the seedling box is clogged. Therefore, when a predetermined number of empty boxes are stored in the empty box storage section 25,
An empty box full switch 70 for detecting this is provided. When the empty box full switch 70 is turned on, the monitor on the cockpit side is activated to notify the operator that the empty box storage section 25 is full. As the monitor, the mascot lamp 71 may be turned on or off, or a monitor lamp may be separately provided.

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,. Seedling push pin 100, ...
Is attached to a bar 101 in the left-right direction, and moves the seedling pushing rods 102, 102, which support both ends of the bar, back and forth, and when the seedling pushing pins 100,. Is inserted into the seedling pushing hole 303 of the seedling box to push the seedling in the pot 301 backward.

The drive mechanism for the seedling pushing rod is 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 rotates upward, the pinion 107 further rotates clockwise, and the seedling pushing pins 110 project. 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 110,. That is, the protrusions of the seedling pushing pins 110,... Are forcibly driven via the springs 116, which are cushioning materials, and the retreating of the seedling pushing pins 110,. When the seedling pushing pins 110 are retracted to a predetermined position, the flange 115 moves to the step 113 of the cylindrical body 113.
a, and the subsequent downward movement of the rod 114 is absorbed by the spring 117, and the seedling pushing pin 11
The overstroke of 0,... Is prevented.

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 of the side wall surface, and a resistance plate 127 is provided at the bottom. The resistance plate 127 is rotatably attached to the shaft 128, and is urged upward by a spring 129. When the seedling is pushed into the recess 125a, the pot portion of the seedling pushes down the resistance plate 127. Seedling is concave 125
If the seedlings are completely contained in a, the resistance plate 127 protrudes above the bottom surface of the concave portion 125a, so that the seedlings cannot be pulled forward.

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

By the action of the drive mechanism, the pair of left and right links 121, 121, 122, 122 swings up and down, 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 branching portion is bent as shown in FIG.
And a seedling tapping portion 141b that contacts the upper surface of the seedbed 310a.

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

When the seedling holder 125 is at the seedling receiving position (E), the seedling is 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 described above, since the seedling holder 125 moves substantially horizontally forward between the FGs, the seedling removing portions 141a,... Are linearly inserted into the recesses 124a,. 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 around a pair of rollers 150 and 151, and the belt always moves in the direction of the arrow as the drive roller 150 rotates in a predetermined direction. The 14 seedlings transferred from the seedling transfer device 17 are placed on the upper surfaces of the right and left seedling transport belts 19 (L, R), seven by seven. Then, the seedlings are transferred to the seedling transport belt 19 (L,
R) transports the seedlings one by one to the seedling collecting position T1 of the planting device 12 one by one. A guide plate 153 is provided below the seedling collecting position T1 for guiding the seedlings to the field when planting by the planting device 12.

The implanting 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. In the figure, reference numeral 163 denotes a planting device mounting shaft supported on 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 mounted on 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. A gear 175 is formed on the arm 174, and the gear 174 meshes with a gear 178 attached to the planted rod attachment 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. 14). At this time, the rollers 172 and 172 move along the guide groove 168a of the implantable rod operating cam 168, so that the arm 174 swings.
It is transmitted to the implanted rod mounting shaft 177 via 178. For this reason, the angle of the implantation rod 161 changes slightly during movement. That is, when passing through the seedling collecting position T1, it is in a horizontal state, and is parallel to the seedling 310 supplied to the seedling collecting position T1 by the seedling conveying belt 19. Then, the seedling is rotated downward while maintaining its posture with respect to the rotary case 160, and guided through the guide plate 153 to the planting position T2. After the implantation, by changing the posture so that the implantation rod 161 rotates forward relative to the rotary case 160, the implantation rod 160 can be operated such that the implantation rod 160 is pulled out directly above. Separation of the rod 160 and the seedling is performed without difficulty, and the posture of the planted seedling 310 is not disturbed.

The transmission case 10 comprises three transmission cases 180,... Arranged in parallel, and four transmission cases 18 which are added to the space and the outer end of these transmission cases.
Each part of four chain cases 182,... Fixedly connected to the back of each extension case is combined.
The rear part of the transmission cases 180,... Has a tubular shape protruding left and right, and is fixedly connected to the extension cases 181,. The input section 183 is formed integrally with the central mission case 180. A rolling shaft connected to the planting portion mounting device 5 is rotatably supported at the front end of the transmission case 180 at the center, and the whole planting portion 3 is rotatably supported by the traveling vehicle body 2. ing. A total of six planting devices 12,... Are provided on both sides of the rear ends of the two chain cases 182 at the center and inside the rear ends of the chain cases 182 and 182 on both the left and right sides.

Next, the internal structure of the transmission case 10 will be described (see FIG. 17). FIG. 17 is an exploded cross-sectional view, and the directions, positional relationships, and the like of the respective parts are different from actual ones. The PTO output of the traveling vehicle body 2 is input to an input shaft 185 in the input portion 183, and the tubular 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 by two central sprocket wheels 200, 200. ing.

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,... Are meshed with bevel gears 208,... Attached to the seedling transport belt drive roller shafts 207, and are transmitted directly 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 constructed 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 of the left and right sides, serves as a float for leveling.
(C) and a side float 250 (L, R) located behind the rear wheel of the traveling vehicle body 2. Each of the floats 250 (L, C, R) has a wide front portion and a narrow rear portion, and is provided with groove forming devices 251 for forming grooves for transplanting seedlings on both left and right sides of the rear portion. Float 25
0 (L, C, R) is pivotally attached to a rear end of a float support rod provided on the transmission case 10 so as to be rotatable up and down by a support pin, and a front portion is suspended by an expansion / contraction link 255. The front part moves up and down according to the unevenness of the paddy surface.

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

The fertilizer applicator 4 includes a hopper 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. Further, the transplanter 1-1 includes a hanger rail 280 as a spare seedling box moving unit in which the front part is inclined so as to be higher, and the seedling box 300 is suspended and held on the rail by using the hanger 281. . Seedling box 3 hung on hanger rail 280
00 moves backward by its own weight, the seedling box 300 is removed from the hanger 281 at a predetermined delivery position, and the seedling box is delivered to the seedling box transport unit 23. The seedling box delivered to the seedling box transport section 23 is pushed out of the pot on the way while being sent along the above-mentioned predetermined transport route.

In the case of such a hanger type transplanter, it is necessary to collect the hanger separately from the empty box. Therefore, the empty box storage portions 25 (1, 1) of the seedling box feeders 14 (1, 3) on both sides.
3) is provided on the outside, and each seedling box feeder 14 (1, 2, 2,
A hanger collection box 282 (1, 2) is provided at the interval 3). A portion 280a of the hanger rail 280 ahead of the seedling box delivery position is bent diagonally forward, and the hanger 281 from which the seedling box has been removed is the portion 280a.
To the collection box 282. The hangers of the seedling box feeders 14 (1, 2) on the left and center are collection boxes 282 (1).
And the hanger of the seedling box feed stand 14 (3) on the right side is collected in the collection box 282 (2). Since the hanger 281 is less bulky than the seedling box 300, two hangers can be collected in one collection box.

The empty box return section 24 is arranged in parallel with the seedling box transport section 23, and the inner rail 24a extends forward by about one seedling box from the outer rail 24b. The lower end of the extension of the outer rail 24b and the inner upper edge of the empty box storage 25 are connected by a chute 284. When the empty box 300 sent between the rails 24a and 24b reaches the end of the empty box return section 24, the outer edge of the empty box 300 comes off the outer rail 24b as shown in FIG. 300 falls on the chute 284 and is transmitted to the empty box storage section 25 along the chute.

When planting, each hanger rail 2
A plurality of seedling boxes 300 are hung at 80, a seedling box containing seedlings is loaded into a seedling box feed stand 14, and the planting section 3 is lowered to the working position shown in FIG. .
When the planting unit 3 is driven, the seedling box is transported along a predetermined transport path, and the seedlings pushed out of the seedling box during the transport are supplied one by one to the seedling picking position T1. The seedlings are planted by a planting rod 161 in a groove for planting seedlings formed in the field scene as the plant progresses. The empty seedling box after the seedlings are extruded is collected in the seedling box storage unit 25. Then, the seedling box 300 suspended on the hanger rail 280 sequentially moves rearward by its own weight, the seedling box 300 is removed from the hanger 281 at a predetermined delivery position, and the seedling box is delivered to the seedling box transport unit 23. The seedlings can be continuously planted.

In the case where the number of seedling box feeders 14 is two, FIG.
9, the empty box 300 is discharged to the outside, and the hanger 281 is collected in the collection box 282 provided at the interval between the seedling box feeders 14 (1, 2). Good.

[0048]

Embodiment 2 Transplanter 1-2 shown in FIGS. 20 and 21
Are empty box storage units 25 (1 to 2 times the number of seedling box feeders 14).
6) are provided in parallel so as to be slidable left and right. When the currently used empty box storage section 25 is full, the empty box storage sections 25 can be slid left and right as a whole to store empty boxes in the new empty box storage section 25. In other words, the number of empty box storage units 25 can store twice as many empty boxes as compared to the same number of models as the seedling box feeder 14,
The height of the empty box storage section 25 can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is an overall side view of an embodiment.

FIG. 2 is a rear view of the embodiment.

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

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

FIG. 5 is an operation explanatory view 1 of the seedling box feeding device.

FIG. 6 is a second diagram illustrating the operation of the seedling box feeding device.

FIG. 7 is a third explanatory diagram of the operation of the seedling box feeding device.

FIG. 8 is a side view of the empty box storage unit.

FIG. 9 is a side view of a main part of the planting section.

FIG. 10 is a side view of the seedling pushing device.

FIG. 11 is a side view of the seedling delivery device and the seedling removing device.

FIG. 12 is a front view of a seedling holder and a seedling dropper.

FIG. 13 is a sectional view of a seedling holder.

FIG. 14 is a side view of the planting device.

FIG. 15 is a sectional view of the planting device.

FIG. 16 is a side view showing the internal structure of the planting device.

FIG. 17 is a developed sectional view of the transmission case.

FIG. 18 is a front view of a seedling box return section.

FIG. 19 is a rear view showing a modification of the first embodiment.

FIG. 20 is a side view of the second embodiment.

FIG. 21 is a rear view of the second embodiment.

FIG. 22 is a plan view of a seedling box.

23 is a view as viewed in the direction of the arrow A in FIG. 22.

FIG. 24 is an enlarged plan view of a seedling raising pot.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transplanter (riding type fertilizing rice transplanter) 2 Running car body 3 Planting part 4 Fertilizer applying device 5 Planting part mounting device 23 Transport route (seedling box transporting part) 24 Empty box returning part 25 Empty box storing part 280 Moving spare seedling box Part (hanger rail) 300 Seedling box

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor, Sumi Fukushima, 1 Toyo-cho, Tobe-cho, Iyo-gun, Ehime Pref.

Claims (3)

[Claims] 1. A seedling grown in a flexible seedling box 300 is loaded into the planting section 3 together with the seedling box 300, and the seedling box 300 is transferred along a predetermined transfer path 23 while the transfer path is being set. 2
In the transplanting machine which takes out the seedlings from the seedling box 300 at the appropriate place of 3 and transplants the seedlings into the field, a spare seedling box moving part 280 which moves while the plurality of seedling boxes 300 are suspended is provided,
A transplanter characterized in that the seedling boxes (300) suspended from the spare seedling box moving section (280) are sequentially supplied to the transfer start end side of the transfer path (23) of the planting section (3). 2. The transplanter according to claim 1, wherein the upper portion of the seedling box 300 is locked by the spare seedling box moving section 280 and suspended in a substantially vertical state. 3. The transplanter according to claim 1, wherein the spare seedling box moving section 280 is provided above the planting section 3.