JPH07194222A - Mechanism for operating compacting wheel and soil covering wheel in seedling transplanter - Google Patents

Abstract

PURPOSE:To provide a mechanism for operating a compacting and soil covering wheels in a seedling transplanter excellent in working properties and operating efficiency by constituting the mechanism so as to enable upper and lower regulating operations of the compacting and soil covering wheels from an operating part installed on one side of a transplanter body. CONSTITUTION:This mechanism for operating a compacting wheel 160 and soil covering wheels 170 is constituted so as to perform the upper and lower regulating operations of the compacting wheel 160 and soil covering wheels 170 from an operating part installed on one side of a transplanter body (A) in a transplanter obtained by connecting the transplanter body to the rear of a mobile car body and respectively installing the compacting wheel 160 and soil covering wheels 170 in front and rear so as to enable the free upper and lower regulation in the transplanter body (A).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation mechanism for a compression wheel and a soil cover wheel 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 part of a tractor, a seedling planting unit according to the number of rows is provided on a main frame of the transplanter main body as the applicant previously filed. Is arranged so as to be movable back and forth, and the seedlings are taken out from the seedling tray on the seedling mounting table provided in the unit and planted with the planting claws.

The main body of the transplanter is provided with a gauge wheel, and the unit frame having the seedling planting unit is provided with a crushing wheel and a soil-covering wheel. The crushing wheel is planted before planting seedlings. The field is squeezed and the soil ring is used to cultivate soil after planting seedlings.
The vertical position can be adjusted depending on the situation of the field or for adjusting the planting depth.

[0004]

However, with regard to the crushing wheel and the soil-covering wheel in the conventional seedling transplanting machine, since the vertical adjustment is performed at each mounting position, it takes time and effort, and the adjusting operation is complicated. There was a drawback that was.

[0005]

According to the present invention, a transplanter main body is connected to a rear portion of a traveling vehicle body, and a transplanter main body is provided with a squeeze wheel and a cover ring which are vertically adjustable in front and rear respectively. In the transplanter, an operation mechanism for the pressure-reducing wheel and the soil-covering wheel in the seedling transplanter, which is configured to be able to perform the vertical adjustment operation of the pressure-reducing wheel and the soil-covering wheel from an operation unit provided on one side of the transplanter body, is provided. To do.

[0006]

In the present invention, the seedling transplanting work is performed 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 part. The packing wheel and the soil-covering wheel provided on the unit frame of the transplanter body fulfill the functions of suppressing the field, adjusting the planting depth, and covering the soil.

[0007] In particular, the up-down adjustment of the compression wheel and the soil-covering wheel is performed by an operator operating an operation unit provided on one side of the transplanter main body, and the operator performs intensive operation on the operation unit. Perform the vertical adjustment operation of the compression wheel and the covering wheel.

[0008]

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 A 1 II Boarding step for workers 30 III Spare 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 across the front of the transplanter main body A, and a rear end is provided at the left end of the square pipe frame 2. The chain case 3 on the left side of the chain case 3 is fixedly installed, and a connecting pipe 4 is installed between the rear parts of the chain case 3. The connecting pipe 4 can be cut out in the middle to form a left and right separate connecting pipe, and FIG. 2 adopts the structure of such a left and right connecting pipe.

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 having a substantially U-shape in 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 columns 13, 13 are bent 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 of 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, and
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 top of the side view of the substantially triangular shape. 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 from and supported on the main frame 1 of the transplanter main body A described above. 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.

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

II Operator Boarding Step 30 As shown in FIGS. 1 and 2, an operator boarding step 30 as a worker platform 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.

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

III Preliminary seedling placement table 40 As shown in FIGS. 4 and 5, two straight seedlings for the preliminary seedling placement 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 tray receiving piece, 44 is a seedling 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, an 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, and a main planting clutch lever 52 is projected on the upper surface thereof, and the left and right unit clutch levers 53 of the two-transplanting 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 the 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 can be adjusted and the left and right can be rotated freely. Gauge wheel 60,60
Are installed.

That is, brackets 61 are projected on the left and right ends of the square pipe frame 2, and the brackets 61 are extendable and retractable.
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.

The seedling taking nail driving mechanism 151 and the planting claw driving mechanism 152 are arranged at the upper and lower positions, and 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 interposed between the unit frame 80 and the lateral pipes 14 between the left and right supporting columns 13, 13. 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 on the bracket 82, 84 is a lifting handle, 85 is a rotary screw 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 raising / lowering handle 84 is rotated, the rotary screw rod 85 rotates, and the telescopic pipe 86 screwed to the telescopic rod 86 expands and contracts. The lower end of the telescopic pipe 86 and the unit frame
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.

Below the unit frame 80 and below the seedling mounting table 90, a tray guide rail 300 is continuously provided via a bracket 301.

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, so that the empty seedling tray M ′ vertically fed from the seedling placing table 90 falls downward and is placed on the tray guide rail 300. It is configured.

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.

In the figure, the engagement piece 304 is fixed to the base moving element 112.

The empty seedling tray M'is constructed so as to be carried to the front part of the unit frame 80 where the operator can easily collect it, and the operator can easily collect the empty seedling tray M '. It is a thing.

(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.

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, the 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, the vertical feed shaft
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.
Longitudinal feed drive mechanism 101 arranged on each outer surface of 91 and rear side plate 92
Has a function of vertically feeding 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 and the vertical feed drive mechanism 101 is driven at the end of the horizontal feed of the seedling mounting table 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 lengths of the front and rear end flanges M-1, M-2. There is a relation of L> L1 by the amount of.

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. 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.

As shown in FIG. 9, at the lower end of the seedling table 90,
A front side guide plate 102 and a back side guide plate 103 for guiding the front side and the back side of the seedling tray M after taking out the seedling pot P are vertically provided. In the figure, 104 indicates a flange portion.
Reference numeral 105 denotes a stay for mounting the front guide plate 102.

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 vertically provided above the seedling mounting table 90.

(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 mounting 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 portion 142 of the lock cam 141 of the auxiliary ratchet 130 is formed to be curved lower than the top portion 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 driving mechanism 152 includes a chute 155 disposed below the turning locus 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 The operation mechanism of the packing wheel 160, which is the subject matter of the present invention, will be described.

As shown in FIG. 12, the compression wheel 160 is rotatably mounted on a compression wheel bracket 161, and a middle portion of the bracket 161 is connected between the main frame 1 and the unit frame 80. Link rod 211 of parallel link 212
The bracket 161 is pivotally supported by a pivoting portion 162 thereof, and the tip of the bracket 161 is attached via a compression link 163 to the compression wheel operating lever 16
4 is linked and linked.

The lever 164 is projected to the front of the unit frame 80, and is constructed so that the repression force of the repression wheel 160 can be adjusted in three steps by operating the lever.

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.

The compression wheel bracket 161 is a link rod.
Because it is pivoted at the position of the pivot 162 at the rear end of 211,
A fulcrum of the parallel link 212 including the link rod 211 and the swing chain case 202 is used as a fulcrum of the compression wheel 160.

(7) Soil cover 170 The operation mechanism of the soil cover 170 which is the subject matter of the present invention will be described.

As shown in FIG. 13, the earth cover 170 is disposed at the rear of the planting part 150, and has an outer cylinder 171 hung vertically on the unit frame 80, and is vertically inserted into the outer cylinder 171. Shaft 172, a rotary screw 174 screwed to a screw cylinder 173 provided on the upper end of the support shaft 172, a handle rotatably connected to a rotary rod 176 and a rotary rod 176 connected to the upper end of the rotary screw 174 via a bevel gear 175. It is composed of a soil-covered wheel operation handle 178 connected through a rod 183.

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.

Therefore, by operating the soil wheel operation handle 178, the bevel gear 175 is operated via the handle rod 183 and the rotating rod 176. When the rotating screw rod 174 is rotated by the operation of the bevel gear 175, the rotating screw rod 174 is rotated.
The screw cylinder 173 screwed to the up and down moves up and down.

The vertical movement of the support shaft 172 integral with the screw cylinder 173 is performed by the vertical movement of the screw cylinder 173, and the earth cover 170 at the lower end of the support shaft 172.
You can adjust the soil cover pressure.

Further, in the earth covering wheel 170, a base end of a substantially U-shaped locking rod 179 is projectingly provided at the lower end of the support shaft 172 so as to prevent backlash from occurring to the left and right during traveling. The tip of 179 projects upward and is inserted into a through hole 181 of a locking plate 180 fixed to the unit frame 80. Therefore, the soil ring
When the 170 moves up and down, the locking rod 179 also moves up and down, but since the tip of the locking rod 179 is inserted into the through hole 181 of the locking plate 180, the soil covering wheel 170 cannot rotate left and right. Therefore, it is possible to prevent looseness of the soil-covered wheel 170 that occurs during traveling. 18 in the figure
2 is a handle support plate, and 184,185 are universal joints.

VII Power Transmission System in Transplanter Main Body 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 an oscillating chain, 208 is a transmission case, 209 is an input shaft, 210 is a shaft case, 211
Is the link rod, 212 is the swing chain case 202 and the link rod 21.
1 shows a parallel link constituted by 1 and the unit frame 80 on which the mission section 200 is mounted is connected to the main frame 1 by the parallel link 212 to the shaft case 210 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 the clutch is always engaged by the spring. .

Power transmission system with seedling planting The power transmission system with seedling planting is carried out 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 indicates 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 operating rod 246 is connected to the bracket 245 upward, and a link is connected to the upper end of the operating 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.

Further, a seedling interlocking shaft 238 'having a seedling taking clutch 231' is provided in the middle of the interlocking gear group between these, and the operation of the seedling taking 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 end of the mission output shaft 238 is a seedling take-up spindle 242 which is installed in front of and behind the unit frame 80 via an output sprocket 239, a chain 240, an input sprocket 241 and the like.
Is linked to.

The seedling taking spindle 242 transmits power to the seedling taking nail drive mechanism 151 via 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 and the unit frame 80 of the transplanter main body A 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 concentratedly 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.

In particular, the compression wheel operating lever 164 is provided at the tip of the unit frame 80 so as to project forward, and is used for adjusting the vertical position of the compression wheel 160 via the compression link 163. The compression ring bracket 161 that is connected to the lower end of the link 163 is connected to the link rod 21 of the parallel link 212.
The rear end of 1 is the pivot.

[0105] The compression wheel is operated by operating the compression wheel operation lever 164.
Since the vertical position of 160 can be adjusted, the repression can be changed according to the soil condition with seedlings.

Further, as shown in FIG. 13, a cover wheel operation handle 178 has a handle support plate 182 projecting from the front end of the unit frame 80 and a handle rod 183 connected to the cover wheel operation handle 178. The rotary rod 176 is supported by 182, and a rotary rod 176 is connected to the rear end of the rod 183 via a universal joint 184.
The middle of 176 is divided into two parts via a universal joint 185, and the rear end is connected to the bevel gear 175.

The rotary screw 174 is rotated via the bevel gear 175 by operating the earth-cover operation handle 178, and the rotary screw 174 is rotated.
The support shaft 172 screwed through the screw cylinder 174 and the screw cylinder 173 is moved up and down, and the earth cover 170 at the lower end is moved up and down.

In this way, the vertical operation of the earth-cover 170 is performed by vertically moving the support shaft 172 by operating the earth-cover operation handle 178.

IX Overall Operation Description 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 on the tractor T.

[0110] The seedling transplanting work is performed 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.

In addition, the compression wheel 160 and the soil covering wheel 170 are adjusted in pressure suppression and soil covering pressure by operating the compression wheel operating lever 164 and the soil covering wheel operating lever 178, respectively.

Such an operation is carried out 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.

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 downward from the seedling mounting table 90, is stored in the tray guide rail 300, and is sent to the operator side. The seedling tray 90 is replenished with the seedling tray by taking out the spare seedling tray M placed on the spare seedling mounting table 40 and replenishing it to the spare seedling mounting 90 ′.

[0117]

[0118]

[Effects] According to the present invention, since the up-down adjustment operation of the compression wheel and the soil-covering wheel can be performed by the operation section provided on one side of the transplanter body, the operator can concentrate on the compression wheel from the operation section. The effect of vertically adjusting the soil cover wheel can be improved, and workability can be dramatically improved.

[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 13 Left and right support 16 Left and right inclined pipe 30 Boarding step for workers 50 Operation box 60 Gauge wheel 70 Transplanting unit 80 Unit frame 90 Seedling platform 110 Horizontal feed mechanism 120 Vertical feed mechanism 150 With planting Part 154 Naetori claw 156 Claw with planting 160 Squeezing wheel 170 Soil cover

 ─────────────────────────────────────────────────── ─── 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 main body (A) is connected to a rear portion of a traveling vehicle body, and a transplanter main body (A) is provided with a compression wheel and a soil cover wheel that are vertically adjustable in front and rear respectively. In the above, in the seedling transplanter, which is configured so that the up / down adjustment operation of the presser wheel (160) and the soil cover wheel (170) can be performed from the operation unit provided on one side of the transplanter body (A), and the cover wheel. Operating mechanism.