JPH07194217A - Structure for vertical conveying regulating plate of seedling tray in seedling transplanter - Google Patents

Abstract

PURPOSE:To provide a structure for a vertical conveying regulating plate, capable of surely conveying a seedling tray downward and improved in seedling takeout operating efficiency without bending or floating the seedling tray by vertically installing a guide plate on the front side for regulating the conveying direction under a seedling-carrying platform of a transplanting unit. CONSTITUTION:This structure for a vertical conveying regulating plate is obtained by vertically installing a guide plate 102 on the front side for regulating the conveying direction while guiding the vertical conveying of a seedling tray (M) under a seedling-carrying platform of a transplanting unit in a seedling transplanter equipped with a transplanter body connected to the rear of a mobile car body and the transplanting unit loaded onto the transplanter body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for regulating vertical conveyance of seedling trays in a seedling transplanter.

[0002]

2. Description of the Related Art Conventionally, in a seedling transplanter in which a transplanter main body is connected to a rear portion of a tractor, a transplant unit is provided on a main frame of the transplanter main body so as to be slidable back and forth, as previously filed by the applicant. Connect the unit frames, remove the seedlings from the seedling tray on the seedling mounting table provided in the transplanting unit, plant the seedlings with the planting claws, and when the planting of one row of seedling pots is completed, remove the one row of seedling pots. It is configured to be vertically conveyed downward.

As described above, the seedling tray on the seedling mounting table is configured to be vertically transported by one row when the seedlings are taken out from the seedling pots for one horizontal row, and slide from the seedling mounting table. The vertically transported seedling tray is configured to be stored below the planting section when it becomes empty.

[0004]

However, when the seedling tray is vertically conveyed downward from the seedling mounting table, the seedling tray is provided with a vertical feed pin extending horizontally on the seedling mounting table with a recessed groove on the back side. The vertical feed chain is used for vertical feed.

Since such a vertical feed pin rotates on the seedling table by a vertical feed chain, the vertical feed pin does not function below the seedling table.

[0006] Therefore, below the seedling placing table where the vertical feed pin can be disengaged, there is no means for regulating the seedling tray, so that the seedling tray easily floats, and the seedling can be properly removed when the seedling is picked up by the seedling picking claw. There is a problem that it may not be possible to take it out, and it is difficult for the empty seedling tray to drop properly into the lower storage part.

[0007]

According to the present invention, a transplanter main body is connected to a rear portion of a traveling vehicle body, and a transplanter unit is mounted on the transplanter main body. (EN) Provided is a vertical transfer regulation plate structure for a seedling tray in a seedling transplanter, which vertically guides a vertical transfer of a seedling tray while vertically arranging a front side guide plate for controlling the transfer direction.

[0008]

In the present invention, the seedling transplanting work is carried out by pulling the transplanter main body by the traveling vehicle body and taking out the seedlings from the seedling tray with the seedling picking nails and planting the seedlings with the planting nails by the function of the planting section.

At this time, when seedling planting for one horizontal row is completed, the seedling trays are vertically fed by one horizontal row, are sequentially fed vertically downward, and finally fall into the lower storage section.

As described above, when the seedling tray is vertically fed and sent to the lower portion of the seedling mounting table, the seedling tray is guided by the guide plate and is regulated to drop vertically.

In this way, since the seedling tray is accurately guided in the vertical direction by the guide plate, the seedling can be reliably taken out without being caught by the seedling tray when the seedling is picked up by the seedling picking claws.

[0012]

1 is a side view mainly showing a main frame 1 of a transplanter main body A, FIG. 2 is a plan view of the same, and FIG. 3 is a rear view of the same. The figure shows that the transplanter main body A is movably connected to the rear of a tractor T, which is a traveling vehicle body, via a three-point link mechanism C as a connecting portion.

Before explaining the embodiment of the present invention, a table of contents for explaining the overall structure of the embodiment of the transplanter main body of the present invention will be shown.

I Main frame of transplanter main body 1 II Boarding step for operator 30 III Preparatory seedling stand 40 IV Control box 50 V Left and right gauge wheels 60 VI Transplanting unit 70 Unit frame 80 Seedling stand 90 Horizontal feed mechanism 110 Vertical feed Mechanism 120 Seedling claw driving mechanism 151 and planting claw driving mechanism 152 Compression wheel 160 Soil cover 170 VII Power transmission system Power transmission system to mission unit 200 Seedling power transmission system Seedling power transmission system Seedling table lateral feed power Transmission system Vertical seedling power transmission system IIX Operation system IX Description of overall operation Hereinafter, an example will be described according to the above table of contents.

I Main Frame 1 of Transplanter Main Body A As shown in FIG. 1, a square pipe frame 2 is laid horizontally on the front part of the transplanter main body A, and at the left end of the square pipe frame 2, there is a rear side. The chain case 3 is fixedly installed on the left side of the chain case 3, and the connecting pipe 4 is installed between the rear parts of the chain case 3 on the left side. In addition, the connecting pipe 4 can be cut out in the middle to form a separate connecting pipe on the left and right sides.
The structure of such left and right connecting pipes is adopted.

Further, as shown in FIG. 2, a hexagonal shaft 201 as an output shaft of the chain case 3 is inserted into the connecting pipe 4 to transmit power to the rear transplant unit 70. .

A guard pipe 6 which is substantially U-shaped in a plan view is connected to the left and right connecting pipes 4 via a bracket 5 so as to extend rearward. The gart pipe 6 constitutes the main frame 1 of the transplanter main body A, and is composed of left and right straight pipes 7 and a bent pipe 9 connected to the rear ends thereof via a connecting portion 8.

The square pipe frame 2 has a gear box 2'in its center, and transmits power from the PTO shaft P of the tractor T to the drive shaft 11 in the square pipe frame 2 via the gear box 2 ', It is configured to transmit power from the shaft 11 to the hexagonal shaft 201 via the chain case 3.

In addition, at both ends of the square pipe frame 2, square pipe-shaped left and right columns 13, 1 are attached via mounting brackets 12, 12.
3 are erected.

The left and right struts 13 and 13 are curved backward from the middle, and a horizontal pipe 14 is horizontally mounted on the upper ends thereof.

Further, right and left inclined pipes 16 and 16 are provided between the horizontal pipe 14 between the left and right columns 13 and 13 and the rear ends of the right and left straight pipes 7 in the guard pipe 6 which is substantially U-shaped in plan view. ing.

The upper ends of the left and right inclined pipes 16, 16 are horizontal pipes.
Fixed at both ends of 14 via fixed brackets 17, and the lower ends of the inclined pipes 16, 16 are fixed at the rear ends of the straight pipes 7, 7 via horizontal brackets 18.

As described above, the main frame 1 of the transplanter main body A includes the square pipe frame 2, the guard pipe 6,
It is composed of left and right columns 13,13 and left and right inclined pipes 16,16, etc., increasing the overall strength despite the simple frame structure.

Further, the structure of the main frame 1 is formed in a substantially triangular shape by the left and right columns 13, 13, the guard pipe 6, and the left and right inclined pipes 16, 16 in a side view. It has an ideal structure in terms of strength.

Moreover, even when the unit frame 80, which will be described later, is hung on the main frame 1 via the elevating mechanism 81, the main frame 1 is hung at the apex of a substantially triangular shape in a side view. Can also hold enough.

Main frame 1 of the transplanter main body A
As shown in FIG. 2, the tractor T has a three-point linkage C
Specifically, the lower link 20 and the top link 21 from the tractor T are connected to the link bracket 19 fixed to the square pipe frame 2.

As shown in FIGS. 1 and 2, a transplanting unit 70, which is a main part of the transplanter main body A, is suspended and supported on the main frame 1 of the transplanter main body A described above, and also at the front of the machine body. The operator's boarding step 30, the spare seedling stand 40, the operation box 50, the gauge wheel 60, etc. are equipped at the required points of the main frame structure.

Hereinafter, the operator's boarding step 30, the preliminary seedling stand 40, the operation box 50, the gauge wheel 60, and the transplant unit 70 will be described in this order.

II Worker's Boarding Step 30 As shown in FIGS. 1 and 2, a worker's boarding step 30 as a worker table is horizontally mounted above the square frame pipe 2 via a support frame 31. The step 30 has a horizontally long shape, and the left and right ends thereof are provided outside the both side ends of the guard pipe 6.

A vertical net 32 is erected on the front edge of the step 30, that is, behind the operator. At the center upper end of the vertical net 32, a worker's seat 33 is provided on the left and right rear wheels t, t of the tractor T. Between the left and right rear wheels t, t in the front-rear direction, and the front and rear wheels are partially overlapped with each other.

A cover case 35 for covering the link hitch 22 at the tip of the top link 21 protruding rearward from the vertical net 32 is provided in the lower portion of the seat 33. In the figure, 36 indicates a round bar for slip prevention provided on the upper surface of the rear end edge of step 30.

III Preliminary seedling placing table 40 As shown in FIGS. 4 and 5, two straight seedlings for the preliminary seedling placing table are provided via brackets 41 in the middle of the straight pipes 7, 7 on the left and right sides of the guard pipe 6. Stand columns 42, 42 are erected, and a vertical seedling stand is held between the columns 42, 42 at a certain vertical interval.
40 are erected.

In the figure, 43 is a seed tray receiving piece, 44 is a holding tray holding frame, 45 is a nursery column 42, a gate-shaped frame between the upper ends of the seedlings, 46 is a canopy, 47 is a seedling column 42. A connecting member for connecting the support column and the outer surface of the inclined pipe 16 is shown.

IV Operation Box 50 As shown in FIG. 1, the operation box 50 is connected to the center of the horizontal pipe 14 installed between the upper ends of the left and right columns 13, 13 so that the left and right positions can be adjusted.

The operation box 50 is formed in a substantially rectangular box shape, a main planting clutch lever 52 is provided on the upper surface, and the left and right unit clutch levers 53 of the two-transplant unit 70 are provided on the front surface. 53 is projected, and a steering knob 51 for steering the gauge wheel 60, which will be described later, is projected on the rear surface. The steering knob 51 is linked to a motor-driven steering mechanism 63 for steering a gauge wheel 60, which will be described later.

V gauge wheel 60 As shown in FIG. 1, below the left and right ends of the square pipe frame 2 behind the lower link 20 of the three-point link mechanism C, the vertical position is adjustable and the left and right are freely rotatable. Gauge wheel 60,60
Are installed.

That is, brackets 61 are provided on both right and left ends of the square pipe frame 2 so that the brackets 61 can extend and retract.
Further, a support shaft 62 is rotatably provided vertically, and a gauge wheel 60 is groundably mounted on the support shaft 62 by grounding.

A steering mechanism 63 is linked to the left and right gauge wheels 60. The steering mechanism 63 includes a tie rod 64 interposed between the left and right gauge wheels 60, a pitman arm 65 connecting both ends of the tie rod 64 and the left and right support shafts 62, a tip end in the middle of the tie rod 64, and a rear end angled. It is composed of a telescopic device 67 connected to each steering bracket of the pipe 2. In the figure, 68 indicates a telescopic rod.

VI Transplanting Unit 70 Two transplanting units 70 are provided on the left and right sides so that two-row planting is possible. The left and right transplantation units 70 have the same structure on the left and right, so one unit will be described.

As shown in FIGS. 1 and 2, the transplant unit 70
Is a unit frame 80 suspended from the left and right columns 13 via an elevating mechanism 81, a seedling mount 90 slidable back and forth along the frame 80, and a transverse feed mechanism 110 provided on the seedling mount 90. The vertical feeding mechanism 120 of the seedling tray equipped on the seedling mounting table 90, the seedling picking nail drive mechanism 151 that constitutes the planting section 150 provided on the unit frame 80, and the planting section 15 also provided on the unit frame 80.
0-planting pawl drive mechanism 152 and unit frame
It is composed of a compression wheel 160 arranged in the lower front part of 80 and a covering wheel 170 arranged in the lower rear part of the unit frame 80.

It should be noted that the seedling taking nail driving mechanism 151 and the planting nail driving mechanism 152 are arranged at the upper and lower positions. In FIG. The drive mechanism 152 and the drive mechanism 152 are shown separately so that both drive mechanisms can be understood.

The constituent members of the transplant unit 70 will be described below in sequence. (1) Unit Frame 80 As shown in FIGS. 1 and 2, the unit frame 80 has a frame configuration that forms a substantially rectangular box-shaped skeleton, and the unit frame 80 is placed on the seedling placing table 90 inside the frame. Seedling tray M
A transplanting mechanism for taking out the seedlings from the seedling pot P and planting them in soil is provided.

An elevating mechanism 81 is provided between the unit frame 80 and the lateral pipes 14 between the left and right columns 13, 13, and therefore the entire unit frame 80 is lifted by the elevating mechanism 81. It is supposed to be hung up and down on 13th.

Reference numeral 82 is a bracket, 83 is an outer cylinder pivotally supported by the bracket 82, 84 is a lifting handle, 85 is a rotating rod, 86 is a telescopic pipe, 87 is a tubular body, 88 is a support spring, and 86 'is screwed. Indicates a part.

When the lifting handle 84 is rotated, the rotary screw 85 is rotated, and the telescopic pipe 86 screwed to the telescopic rod 86 expands and contracts.
The unit frame 80 is moved up and down by the compression of the support spring 88 provided between the upper frame 80-1 and the cylindrical body 87 pivotally supported by the upper frame 80-1.

(2) Seedling mounting table 90 As shown in FIGS. 1 and 21, the seedling mounting table 90 has the seedling tray M mounted in a substantially vertical shape and in the lateral longitudinal direction, and is fed laterally in the longitudinal direction of the machine body. Is configured to. That is, the table feed 112 fixed to the seedling mounting table 90 is screwed onto the lateral feed screw shaft 111 provided on the unit frame 80, and the seedling mounting table 90 is laterally fed back and forth by rotation of the screw shaft 111. Is configured as follows.

Further, as shown in FIG. 1, a front side plate 91 and a rear side plate 92 are provided in front of and behind the seedling placing table 90, and a vertical feed drive shaft 93 is provided at an upper part between the front side plate 91 and the rear side plate 92. A floating sprocket shaft 94 is installed in the lower part.

As shown in FIGS. 6 and 9, a vertical feed drive shaft 93
A vertical feed drive sprocket 95 is continuously connected to the sprocket 95, and a free sprocket 96 is continuously connected to the free sprocket shaft 94. The sprocket is engaged with the recessed groove m between the seedling pots P of the seedling tray M. Vertical feed chain 98 with vertical feed pin 97
Is suspended.

Before and after the unit frame 80, a vertical feed shaft is provided.
A vertical feed cam 10 is installed at both ends of the vertical feed shaft 99.
0 is provided and the vertical feed cam 100 is the front plate of the seedling stand 90.
The vertical feed driving mechanism 101 is driven through the start levers 123 provided on the outer side surfaces of the rear plate 92 and the rear plate 92 to vertically feed the seedling tray M on the seedling mounting table 90.

Therefore, when the vertical feed cam 100 of the vertical feed shaft 99 is activated to drive the vertical feed drive mechanism 101 at the end of the horizontal feed of the seedling mount 90, the vertical feed drive shaft 93 causes the vertical feed drive sprocket 95 to move. The seedling tray is vertically fed by the vertical feed chain 98 by rotating a certain amount.

97-1 is a vertical feed rod installed between the left and right vertical feed chains 98, 98-1 is a chain piece, and 98-2 is each chain piece 98-1.
Longer strip, 98-3, 98-4 are connecting shafts, 98-5 are vertical feed rods
The pin in front of 97-1 is shown.

In FIG. 6, L indicates the length of the long piece 98-2, L1 indicates the length of the other chain piece 98-1, and the longitudinal feed of the front and rear end flanges M-1 and M-2. Direction length L>
L1 relationship.

Therefore, the seedling tray M is set on the vertical feed pin 97 and the vertical feed rod 97-1 of the vertical feed chain 98, and especially, the rear end flange M-2 of the seedling tray M and the seedling tray M are set. The joint portion of the front end flange M-1 of the jointing seedling tray M is set so as to be placed on the vertical feed rod 97-1 at the connecting portion of the two long pieces 98-2, 98-2.

The gist of the present invention resides in the front guide plate 102 which is vertically provided at the lower end of the seedling table 90. That is, as shown in FIG. 9, at the lower end of the seedling mounting table 90, a front guide plate 10 for guiding the front and back sides of the seedling tray M after the seedling pot P is taken out.
2 and the back side guide plate 103 are vertically provided.

That is, the back guide plate 103 is provided on the seedling table 90.
Is hung vertically from the lower end of the base plate on the same surface as the base plate of the front side guide plate 102, and the front side guide plate 102 holds a space corresponding to the thickness of the seedling tray M between the front side guide plate 102 and the back side guide plate 103 so as to face the back side guide plate 103. The upper end edge forms a flange portion 104 that expands outward. A space between the front side guide plate 102 and the back side guide plate 103 is configured to communicate with a tray guide rail 300 provided below the space. Reference numeral 105 denotes a stay for mounting the front guide plate 102.

Moreover, the upper end of the front guide plate 102 is shown in FIG.
As shown in FIG. 5, the seedling picking claw 154 is extended to a position where it does not interfere with the seedling picking path. Therefore, when the seedling picking claw 154 takes out the seedlings from the seedling tray M, the front guide plate
By 102, the seedling tray portion immediately below can be pressed down, and when the seedling is taken out, it is possible to prevent the lower portion of the seedling tray with the seedling pot that is already empty from adhering to the seedling and floating.

A spare seedling stand 90 'is provided on the upper edge of the seedling stand 90.
Is extended upwards, and a seedling sensor 106 for detecting the material of the seedlings is provided in the lower middle part of the spare seedling stand 90 ′, and the seedling sensor 106 can notify the timing of seedling splicing. .

A plurality of vertical guides 107 are provided above the seedling table 90 in the vertical direction.

Below the unit frame 80 and below the seedling mount 90, that is, below the front guide plate 102, the tray guide rail 300 is provided via the bracket 301.
Are installed in series.

As shown in FIGS. 1 and 8, the tray guide rail 300 has a U-shaped cross section and has a front half 302 and a rear half 30.
The heights of the rail bottoms differ between 3 and 3, and the rail bottom of the tray guide rail 300 is formed lower than the rail bottom of the latter half 303 in the front half 302, that is, the portion close to the operator side.

The tray guide rail 300 is located below the seedling placing table 90, and an empty seedling tray M ′ longitudinally fed from the seedling placing table 90 is guided by the front guide plate 102 and falls downward so that the tray guide. It is configured to ride on rail 300.

On the seedling placing table 90, an engaging piece 304 is vertically provided which engages with the empty seedling tray M'and moves the empty seedling tray M'only when the seedling placing table 90 is slid forward. Engaging piece 304 is a seedling table
It is configured so that the function of engaging with the seedling mounting table 90 in the direction of forward movement of 90 and the function of engaging with the seedling mounting base 90 in the direction of moving backward of seedling mounting table 90 are lost. In the figure,
The engagement piece 304 is fixed to the base mover 112.

Therefore, as shown in FIG. 16, the seedling tray M of the seedling mounting table 90 is the front half of the unit frame 80, that is,
When the tray guide rail 300 is emptied when it is located above the front half 302 of the tray guide rail 300, it is fed downward by the vertical feed mechanism 120 and drops onto the front half 302 of the tray guide rail 300.
If the seedling mount 90 moves backward in this state, the guide rail 30
Since the bottom surface of the front half portion 302 of 0 is lower than that of the rear half portion 303, the seedling mounting table 90 is locked by the step between the bottom surfaces of the front half portion 302 and the rear half portion 303.

Moreover, in addition to this, the engaging piece 304 does not perform the engaging function in the backward direction of the seedling mounting table 90, so that the seedling mounting table 90 remains dropped on the front half 302 of the tray guide rail 300. Therefore, the operator collects the dropped empty seedling mounting table 90 from the tray guide rail 300.

On the other hand, the seedling tray M of the seedling mounting table 90 is the latter half of the unit frame 80, that is, the tray guide rail 300.
When it is empty when it is located above the front half 302 of the tray, it is fed downward by the vertical feed mechanism 120 and is fed to the tray guide rail 300.
Fall into the first half 302 of the.

In this state, when the seedling placing table 90 moves forward, the engaging piece 304 engages with a predetermined position on the back surface of the seedling tray M and the seedling placing table 90 is moved.
With the advance of 90, the empty seedling tray M ′ is conveyed to the first half.

The empty seedling tray M'is carried to the front half 302 of the tray guide rail 300 having a bottom lower than the rear half 303, and drops into the tray guide rail 300 having the lower bottom. The dropped empty seedling tray M ′ is collected by the operator.

As described above, even when the seedling tray M is dropped on either the front half 302 or the rear half 303 of the guide rail 300, the seedling mounting table 90 moves backward again to perform the next forward movement. When performing, the engaging piece 304 pushes the rear end of the empty seedling tray M ′ that has dropped onto the front half 302, and the unit frame
Since it is pushed to the front end portion of 80, the operator can easily take out the empty seedling tray M ′ from the front.

As described above, the empty seedling retoy M'is constructed so as to be carried to the front part of the unit frame 80, which is easy for the operator to collect, and the operator can easily empty the empty seedling tray M '. Can be recovered.

(3) Horizontal feed mechanism 110 As shown in FIG. 21, between the front and rear of the unit frame 80,
The horizontal feed screw shaft 111 is rotatably installed and
It is configured to input the rotational power from the rear end of 111, and the horizontal feed screw shaft 111 is screwed with the base mover 112 that is connected to the lower end of the seedling mounting table 90. The seedling mounting table 90 is configured to slide back and forth via the table moving element 112 by the rotation of.

(4) Vertical feed mechanism 120 As shown in FIG. 11, the vertical feed mechanism 120 is constructed as follows. A vertical feed shaft 99 is provided in front of and behind the unit frame 80 in parallel with the horizontal feed screw shaft 111, and vertical feed cams 100 are provided at both ends of the vertical feed shaft 99.

The vertical feed cam 100 has a front side plate 91 and a rear side plate 92 of the seedling placing table 90 at the end positions of the front and rear lateral feeding of the seedling placing table 90.
The vertical feed drive mechanism 101 is configured to be driven via a start end lever 123 installed on each outer surface of the.

At the drive end of the vertical feed drive mechanism 101, the vertical feed drive shaft 93 of the seedling placing table 90 is continuously provided.
The seedling mount 90 is rotated through the vertical feed chain 98 by the rotational drive of 93.
The upper seedling tray M is vertically fed downward by one row of seedling pots.

The vertical feed drive mechanism 101 is configured as follows. That is, as shown in FIGS. 10 and 11, the vertical feed drive mechanism 101 is mainly composed of an interlocking link 121 and a ratchet 129.
It is configured to forcibly return by a return spring 125 connected in the middle thereof, and the end of the terminal lever 124 has a boss 126 and a one-way clutch at the end of the vertical feed drive shaft 93.
It is interlockingly connected to a cylindrical shaft 128 which is loosely fitted via 127.

As shown in FIG. 10, between the boss 126 and the cylindrical shaft 128, which are loosely fitted directly to the end of the vertical feed drive shaft 93, are engaged only in the vertical feed direction of the seedling tray M. Directional clutch 127 is installed.

The boss 126 loosely fitted to the vertical feed drive shaft 93 has
The ratchet 129 and the auxiliary ratchet 130 are fixedly installed.The ratchet 129 is provided with a pin 132 that can be inserted and removed freely, and the pin 132 is attached to the clutch lever 134 that is fixed to the vertical feed drive shaft 93 via the key 133. It is lined up.

Furthermore, a lock groove on the periphery of the ratchet 129
A stopper claw 137 pivotally supported on the rear plate 92 of the seedling mounting table 90 via a support shaft 136 is detachably engaged with the 135, and the stopper claw 137 is supported by a spring 138 biased by the support shaft 136. The lock groove 135 is always urged to engage.

Further, the tip of the end lever 124 of the interlocking link 121 has a stopper claw 137 when the interlocking link 121 is moved upward.
The stopper claw 137 is configured to be disengaged from the lock groove 135 of the ratchet 129 by abutting the lower surface.

A stopper pin is provided in the middle of the interlocking link 121.
139 is provided so that the pin 139 can be engaged with the lock groove 140 of the auxiliary ratchet 130.

The top 142 of the lock cam 141 of the auxiliary ratchet 130 is formed to be curved lower than the top of the lock cam 143 of the ratchet 129, and the stopper pin 139 is formed to be slippery.

(5) Planting part 150 As shown in FIGS. 2 and 8, the planting part 150 is composed of a seedling taking nail driving mechanism 151 and a planting nail driving mechanism 152. The seedling take-up nail drive mechanism 151 is composed of a seedling take-up transmission case 153 arranged in the central portion of the unit frame 80 and a seedling take-up nail 154 connected to the output shaft of the case 153 via a crank mechanism.

The planting claw drive mechanism 152 includes a chute 155 disposed below the rotation path of the seedling picking claw 154, and the chute 155.
It is composed of a planting claw 156 which receives seedlings taken out from the seedling tray M and is placed on the soil below the planting claw 156, and a planting claw arm 157 which rotates the planting claw 156 for planting.

(6) Packing Wheel 160 As shown in FIG. 12, the packing wheel 160 is a packing wheel bracket.
The bracket 161 is rotatably mounted on the shaft 161, and the middle portion of the bracket 161 is a pivotal support portion 162 of a link rod 211 of a parallel link 212 continuously provided between the main frame 1 and the unit frame 80.
The bracket 161 is pivotally supported at its tip, and the tip of the bracket 161 is interlockingly connected to a compression wheel operating lever 164 via a compression link 163.

Compression wheel bracket 161 Tip and compression link
163 A spring 165 is installed between the bottom and
The vertical swinging of the can be absorbed to some extent.

(7) Soil cover 170 As shown in FIG. 13, the soil cover 170 is disposed behind the planting part 150, and has an outer cylinder 171 vertically mounted on the unit frame 80 and an outer cylinder 171. Spindle 172 inserted vertically inside
A rotary rod 174 screwed to a screw cylinder 173 provided on the upper end of the support shaft 172, a rotary rod 176 interlockingly connected to the upper end of the rotary rod 174 via a bevel gear 175, and a rotary rod 176 via a handle rod 183. Coupling earth wheel operation handle 17
It is composed of 8 and.

The operation handle 178 is a unit frame.
It is arranged on the front surface of 80, that is, at a position facing the riding step 30 for workers.

In the figure, 179 is a locking rod, 180 is a locking plate, and 181
Is an insertion hole, and prevents the back and forth play of the earth covering 170. In the figure, 182 is a handle support plate and 184, 185 are universal joints.

VII Power Transmission System in Transplanter A Power Transmission System to Mission Unit 200 As shown in FIG. 21, the power transmission system to the mission unit 200 is from the PTO shaft B of the tractor T to the mission unit of the transplant unit 70. It shows the power transmission system up to 200.

The tip of the PTO shaft B from the tractor T is connected to the bevel gear in the gear box 2'provided in the center of each pipe frame 2, and the power from the PTO shaft B is
It is transmitted to the drive shaft 11 in the square pipe frame 2 via the bevel gear. At the end of the square pipe frame 2,
The chain cases 3 are arranged in series rearward. A chain 3'in the chain case 3 is interlocked with a drive shaft 11 in the square pipe frame 2, and a hexagonal shaft 201 parallel to the square pipe frame 2 is connected to the output side of the chain case 3 in parallel. A tip input portion of a swing chain case 202 is rotatably connected to the hexagonal shaft 201.

In the figure, 204 is an input sprocket, 205 is an output shaft, 206 is a sprocket, 207 is a swing chain, 208 is a transmission case, 209 is an input shaft, 210 is a shaft case, 21
1 is the link rod, 212 is the swing chain case 202 and the link rod
The unit frame 80 on which the mission unit 200 is mounted is connected to the shaft case 210 by the parallel link 212 so as to be vertically swingable.

In the mission unit 200, the safety clutch 209 'is interposed between the input shaft 209 and the planted output shaft 213 in the mission case 208 and is always in the clutch engagement state by the spring. .

Seedling planting power transmission system The seedling planting power transmission system is from the mission unit 200 to the planting unit 150.
3 shows a power transmission system leading to the planting claw drive mechanism 152 of FIG.

As shown in FIG. 22, the mission case 20
A planted chain case 220 is connected to the planted output shaft 213 side, and the planted input shaft 221 of the planted chain case 220 is connected.
The planted pawl output shaft 222 and the planted pawl output shaft 222 are linked via a planted chain 223. The input shaft 221 is integrally provided with the planted pawl output shaft 213 of the mission unit 200.
Is connected to the planting crank mechanism 224 of the hopper type planting claw 156.

Seedling Extraction Power Transmission System The seedling extraction power transmission system shows a power transmission system from the mission unit 200 to the seedling extraction pawl drive mechanism 151 via the continuously variable transmission mechanism 232.

Seedling output shaft 230 in mission case 208
Both ends of the seedling harvesting speed change shaft 231 in the mission case 208 extend outside the mission case 208, and a split pulley is provided between the extension shafts outside the mission case 208.
A continuously variable transmission 232 using the 235 is installed.

As shown in FIGS. 14 and 21, the continuously variable transmission mechanism 232 includes a variable speed swing chain case 233 in which the base end is swingably connected to the seedling harvesting speed change shaft 231 of the mission case 208.
Tip chain shaft provided at the tip of variable-speed swing chain case 233
Split pulley 23 connected to 234 slidably in the axial direction
5, a pulley 236 provided on the seedling taking output shaft 230 of the mission case 208, and a speed change belt 237 suspended between the pulley 236 and the split pulley 235. Then, the variable swing chain case 233 has a stock adjustment handle.
244 are connected in series, and the handle 244 is provided at the front of the unit frame 80.

That is, a bracket 245 is connected to the tip of the variable speed swing chain case 233, a lower end of the operation rod 246 is connected to the bracket 245 upward, and a link is connected to the upper end of the operation rod 246. The link plate 247 is configured to move up and down around the pivot 248 by connecting the tips of the plates 247 to each other.The base end of the link plate 247 is connected to the screw cylinder 249 fixed to the upper front end of the unit frame 80. The tip of the screw rod 247 'that is screwed is connected.

At the base end of the screw rod 247 ', an inter-stock adjustment handle 24
4 is provided, and by rotating the handle 244, the screw rod 247 'is rotated to move back and forth, so that the link plate 247 is pivoted up and down around the pivot 248 and the operating rod 246 is vertically moved. The variable speed swing chain case 233 is swung to change the seedling picking speed for adjusting the plant spacing.

Also, the seedling picking gear shifting shaft of the mission case 208
231 is interlocked with the mission output shaft 238 via an interlocking gear group.

A seedling interlocking shaft 238 'having a seedling picking clutch 231' is provided in the middle of the interlocking gear group in between, and the operation of the seedling picking clutch 231 'is performed by the seedling planting power transmission system. When the seedling pick-up clutch 214 is interlocked, that is, when the seedling pick-up clutch 231 'is engaged and the seedling pick-up interlocking shaft 238' makes one revolution, the seedling pick-up clutch 214 is engaged and the seedling picking claw is linked.
154 and the planting claw 156 are synchronized with each other.

The mission output shaft 238 has a tip end through a output sprocket 239, a chain 240, an input sprocket 241 and the like, which are erected in front of and behind the unit frame 80.
Is linked to.

The seedling taking spindle 242 transmits power to the seedling taking nail drive mechanism 151 through a branch chain 243 branched from the middle thereof.

Seedling table lateral feed power transmission system As shown in FIG. 21, the seedling table lateral feed transmission system means the following transmission system. That is, the power is transmitted from the mission unit 200 to the seedling taking spindle 242 via the continuously variable transmission mechanism 232, and the sprocket 250 at the rear end of the seedling taking spindle 242 is sent to the rear end of the lateral feed screw shaft 111 via the interlocking mechanism 251. It is a power transmission system that transmits power, rotates the lateral feed screw shaft 111, and reciprocates the seedling mounting table 90 back and forth through the base moving element 112.

Seedling longitudinal feed power transmission system As shown in FIG. 21, the seedling longitudinal feed power transmission system means the following transmission system. That is, power is transmitted from the mission unit 200 to the seedling taking spindle 242 through the continuously variable transmission mechanism 232, and
242 The power is transmitted from the sprocket 250 at the rear end to the sprocket 252 at the rear end of the vertical feed shaft 99, and when the seedling mounting table 90 arrives at the front and rear ends of the unit frame 80, the vertical feed cam 100 at the end of the vertical feed shaft 99 vertically moves. A power transmission system that activates the feed drive mechanism 101 and vertically feeds the seedling tray M by one row of the seedling pot.

IIX Operation System As shown in FIG. 1, the main frame 1 of the transplanter main body A, the unit frame 80, etc. are provided with a large number of operation levers for performing various operations. Clutch lever 52, left and right unit clutch levers 53, 53, steering knob 51, stock adjustment handle 244, compression wheel operating lever 164
A cover wheel operation handle 178, an elevating handle 84 for elevating and lowering the entire unit frame 80, and the like are disposed behind the operator boarding step 30.

That is, the operation system is centrally arranged in the front part of the main frame 1 and the unit frame 80,
Therefore, the operator can ride on the operator's boarding step 30 arranged in the front part of the main frame 1 and perform intensive operations.

Along with the fact that the operating system is provided in the front part, a power transmission system is provided in the rear part of the operating system to balance the front and rear of the transplanter main body A.

IX Overall Operation Explanation When transplanting seedlings, the transplanter main body A is connected to the tractor T via the three-point link mechanism C, and the seedlings are transplanted while traveling along the tractor T.

The seedling transplanting work is carried out on the PTO axis B of the tractor T.
The power is transmitted from the drive shaft 11 to the mission unit 200, and the power is transmitted from the mission unit 200 to the seedling picking claw driving mechanism 151 and the planting claw driving mechanism 152.

The seedling table 90 of the transplant unit 70 is a lateral feed mechanism.
Seedling nails 154 from the seedling tray M while being horizontally fed by 110
The seedlings are taken out by and the seedlings are planted in the field with the planting claws 156.

Further, while controlling the vertical position of the transplanting unit 70 by the elevating mechanism 81, the compression force of the compression wheel 160 and the covering wheel
Change the cover pressure of 170.

Moreover, the compression wheel 160 and the soil cover wheel 170 are adjusted in pressure suppression and soil cover pressure by operating the compression wheel operation lever 164 and the soil cover wheel operation lever 178, respectively.

Such an operation is performed by the worker who has boarded the boarding step 30 for workers. An operator can operate while riding on the main frame 1 and looking backward from the front of the transplanter main body A. In addition to the above operations, the operator also operates the main planted clutch lever 52, the left and right unit clutch levers 53, the steering knob 51, and the like. Furthermore, inter-stock adjustment handle
The output from the mission unit 200 is continuously variable by the 244 to adjust the stock.

Then, when seedlings of one horizontal row of the seedling tray M on the seedling mounting table 90 are planted, the vertical feeding mechanism 120 vertically feeds the seedling tray M by one horizontal row. The empty seedling tray M'falls down from the seedling mounting table 90, and the tray guide rail
It is stored in 300 and sent to the worker side.

At this time, since the front side guide plate 102 and the back side guide plate 103 are vertically provided below the seedling placing table 90 with a gap substantially the same as the thickness of the seedling tray M, the seedlings emptied. The tray M ′ is guided by the front side guide plate 102 and the back side guide plate 103 and drops from the seedling placing table 90.

Furthermore, since the seedling tray 154 holds the seedling tray M directly below the seedlings with the front guide plate 102, the seedlings taken out are dragged by the empty seedling tray portion below. It is to prevent it. Front guide plate 10
The flange 104 at the upper end of 2 is bent outward so as not to hinder the seedling picking operation of the seedling picking nail 154, and the flange 104 allows the seedling tray M to move the front side guide plate 10.
Guided by 2, the transportation is regulated smoothly.

The supplement of the seedling tray to the seedling mounting table 90 is carried out by taking out the spare seedling tray M mounted on the spare seedling mounting table 40.
This is done by replenishing 90 '.

[0118]

[0119]

[Effect] According to the present invention, since the guide plate for vertically controlling the conveying direction of the seedling tray is vertically provided below the seedling mounting table of the transplanting unit, the seedling tray is surely conveyed downward. In addition, since the seedling tray is not bent or floated when the seedlings are taken out from the seedling pot of the seedling tray with the seedling picking claws, there is an effect that the seedling picking operation can be reliably performed.

[Brief description of drawings]

FIG. 1 is a side view showing a workbench structure of a seedling transplanter of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a front view of a preliminary seedling stand.

FIG. 5 is a side view of a preliminary seedling mounting table.

FIG. 6 is an explanatory diagram of a vertical feed chain.

FIG. 7 is a side view of the same.

FIG. 8 is a rear view of the transplant unit.

FIG. 9 is an explanatory view of a seedling placing table mainly including a vertical feed chain.

FIG. 10 is a cross-sectional explanatory view of a vertical feeding mechanism.

FIG. 11 is an explanatory view showing a ratchet and an interlocking link of a vertical feed mechanism.

FIG. 12 is a side view showing a compression wheel.

FIG. 13 is a side view showing a soil cover wheel.

FIG. 14 is a side view showing an inter-stock adjustment mechanism.

FIG. 15 is an explanatory cross-sectional view of a lifting mechanism for a unit frame.

FIG. 16 is a side view showing a tray guide rail.

FIG. 17 is an explanatory diagram showing a main frame.

FIG. 18 is an explanatory view showing a ratchet portion.

FIG. 19 is a plan view of a seedling tray.

FIG. 20 is a sectional view of a seedling tray.

FIG. 21 is an explanatory diagram showing a power transmission system of a lateral feed mechanism, a vertical feed mechanism, and a seedling picking nail drive mechanism of a seedling tray.

FIG. 22 is an explanatory diagram showing a power transmission system of a planting claw drive mechanism.

[Explanation of symbols]

 A Transplanter main body M Seedling tray 1 Main frame 70 Transplanting unit 80 Unit frame 90 Seedling stand 102 Front side guide plate 103 Back side guide plate 104 Flange section 110 Horizontal feed mechanism 120 Vertical feed mechanism 150 Planting section

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tokio Tamura 1-32, Chaya-cho, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Arimasa Ichinomiya 5-32. No. 7 Ishikawashima Shibaura Machinery Co., Ltd. (72) Inventor Yuji Ohara 5-32-1 Sendagaya Shibuya-ku, Tokyo Ishi Kawashima Shibaura Machinery Co., Ltd.

Claims (1)

[Claims] 1. A seedling transplanter in which a transplanter body (A) is connected to a rear portion of a traveling vehicle body, and a transplantation unit (70) is mounted on the transplanter body (A), wherein a seedling platform of the transplantation unit (70) is provided. A vertical transfer regulation plate structure for a seedling tray in a seedling transplanter in which a front guide plate 102 for vertically controlling the transfer direction of the seedling tray (M) is vertically provided while being guided downward.