JP3384056B2 - Seedling supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Seedlings provided in a transplanter such as a rice transplanter
It relates to a feeding device. [0002] 2. Description of the Related Art Seedling boxes grown in a flexible seedling box
The seedling box along the predetermined transport path.
A hole formed at the bottom of the seedling box during transport
From the seedling box into the pot
The seedlings inside are extruded, and the extruded seedlings are received by the seedling holder.
And move it down, place the seedlings on the seedling transport belt,
The seedling transport belt also transports the seedlings in the horizontal direction and implants them.
Rice transplanter configured to supply one plant at a time to the barn picking position
There is a seedling supply device. [0003] [Problems to be Solved by the Invention] Pushing out seedlings from a seedling box
At the time, the seedling holder is placed on the top side of the seedling box (the side with the leaves of the seedlings).
I am waiting, but between this seedling box and the seedling holder
There are small gaps. Conventionally, seedling box pots and seedlings
Due to the frictional resistance with the floor soil, the pressing force of
The seedling box is transferred to the box so that the seedlings
Deflection to holder side, misalignment of seedling push pin and hole of seedling box
And the seedling extrusion is not performed well.There was something.
Also, if there is a gap between the seedling box and the seedling holder, the leaves of the seedlings
There is a problem of being hurt by being caught between the seedling box and the seedling holder.
You. Therefore, the present invention relates to a method in which
The seedling box is less likely to bend when pushed into
Make sure that the leaves are not easily pinched by the seedling holder, etc.
And the subject. [0004] [MEANS FOR SOLVING THE PROBLEMS]
The present invention has the following configuration. That is, the present invention
The seedling supply device according to the present invention has a hole formed at the bottom of the seedling box.
From the seedling box into a seedling raising pot.
And push the seedling extrusion pin out,Extruded with the seedling extrusion pin
And a seedling holder for receiving the seedlings.
Between the receiving position and the seedling release position below the seedling receiving position
Move the extruded seedlings to the specified position by moving up and down.
And the seedling holder receives seedlings.
A seedling receiving portion comprising a concave portion having a bottom portion and a partition wall;
Protrude toward the seedling box side from the seedling receiving part and push with the seedling pushing pin.
When the seedlings are pushed into the seedling holder, they touch the seedling box
And a protrusion that is integral with the partition wall.
In the left and right direction, the partition and the left and right positions are almost the same.
At the seedling receiving position and above the bottom of the seedling receiving part
Provided to be placedCharacterized by
I have. [0005] [Action] Seedling push pin pushes seedling in seedling box into seedling holder
When the seedling box is placed in the seedling holderProtrusionSeedling extrusion to abut
Make sure that the seedling box does not bend at the position where the pin pushes out.
Can be. For this reason, the position of the seedling push pin and the hole of the seedling box
The displacement can be prevented, and the seedling extrusion is performed favorably.Seedling holder
The seedling receiving part of the
Are enclosed, but the upper part is open. Accordingly
Seedling holder rises from the lower seedling release position to the seedling receiving position
When the seedling box leaves the seedling holder,
It is easy to escape so as not to be caught between the da and the seedling box. Seedling e
The projecting part of the rudder is located higher than the bottom part of the seedling receiving part
Is in contact with the seedling box at the bottom of the seedling holder.
Seedling leaves and seedling box and seedling holder
It is hard to be caught between da. [0006] 1 to 24 show an embodiment of the present invention.
are doing. This transplanter 1A rice transplanter, Four-wheeled vehicle
IsThis machine (running section)2 6-row planting section 3 and fertilizer
4 is installed, and it is configured as a riding type fertilizer rice transplanter as a whole.
Has been established. The planting section 3 is located at the rear of the machine 2 which is a traveling vehicle body.
Attached to the parallel link type planting section mounting device 5 provided in
It is vertically movable with respect to the machine 2. Planting unit mounting device
5 is moved up and down by a hydraulic cylinder 6. [0007] The planting section 3 is a system in which seedlings are loaded together with seedling boxes.
The transmission case 10 which also serves as the planting section frame
A few minutes of the planting device 12 and one seedling at the planting position of the planting device
Equipment for supplying seedlings for supplying each plant is assembled
Have been. Each device for supplying seedlings is a seedling box feeder 14,
Installed in the seedling box feederSeedling box automaticFeeder 15, seedling box feeder
Seedling extruder that pushes seedlings from seedling box at 14 seedling pushing positions
The seedlings extruded by the seedling pushing device
Seedling delivery device 17 to be transported to the plant, assisting the seedling delivery device
Seedling removing device 18, received from the seedling delivery device 17
Seedling transfer bell for transferring seedlings to the seedling collecting position of the planting device 12
19 and the like. The seedling box to be used has a structure shown in FIGS.
Building. That is, the seedling box 300 opens at the top.
Seedling pots 301, ... are lined up in rows and columns.
And three radial slits 302 at the bottom of each pot.
A seedling pushing hole 303 is formed. This seedling extrusion
The hole 303 also serves as a drain. The longitudinal direction, and
Assuming that the direction perpendicular to the horizontal direction is the horizontal direction,
The pitch is constant pitch p, and
A border 306 is provided where the space between the pots is widened.
On each side, the same number per row (for example, 7
1) Pots are arranged at equal intervals. Therefore, the band
Seedling pots are divided into two groups on the left and right sides of the border 306
It has been in a state where it was done. The left and right edges of the seedling box are ears for guidance
Portion 307, and the vertical portion of the pot is
A square claw hole 308 in a plan view is formed at the same pitch as the tip p.
ing. The tip part 309 of the ear part 307 faces downward at a right angle.
It is bent. The seedling box 300 is made of a thin synthetic resin material.
Body and has flexibility in the front-back and left-right directions as a whole.
I do. Put seeds in pots 301, ... and sow and set
The seedlings are grown until they reach the size of an adult seedling 310. Hereinafter, each part of the planting section 3 will be described. [0010] The seedling box feeder 14 is shared by two articles,
There are a total of three units. Each seedling box feed stand 14 is mounted on a seedling box.
Set part 21, connection part 22, seedling box transport part 23, and empty box storage part 2.
5 The seedling box mounting part 21 has a two-stage structure,
The box mounting portions 21 (A, B) are inclined so that the front side is higher.
They are provided in parallel with each other in a state of being set. Connection part 22
(A, B) is the rear end of the upper and lower seedling box mounting parts 21 (A, B)
And the starting end of the seedling box transport section 23. Seedling box transport section
23 is substantially U-shaped in side view, and the rear end of the U-shape
Is the starting point of the seedling box transfer, and the front end of the U-shaped is the end of the seedling box transfer.
Is at the end. The empty box storage section 25 is
It is provided on the front side of the end part and stacks multiple empty seedling boxes
It has a space that can be held. The flow of the seedling box during the planting operation is described.
In other words, the seedling box 300 placed on the seedling box
The seedlings are supplied to the seedling box transporting section 23 through the connecting section 22 and the
The supplied seedling box 300 is started by the seedling box automatic feeder 15.
It is intermittently conveyed from the end side to the end side by one pitch p.
Since the seedling box 300 is flexible, the seedling box 300
It is possible to carry along. Seedling extrusion during transportation
At the position 27, the pot seedling in the seedling box is
Is pushed backward. Seedling box after seedlings are extruded
Is discharged forward from the terminal end of the seedling box transport section 23, and the empty box
Collected in the storage unit 25. The upper and lower seedling box mounting portions 21 (A, B) are both on the left.
There are six seedling box mounting surfaces in the right direction, and the entire seedling box mounting portion 21
Slides to the left and right to produce two seedlings adjacent to each other
The boxes are supplied to the seedling box transport section 23. The seedling box mounting part 21
The ride mechanism is mounted on the back of the seedling box
A rack 30 attached thereto, and a pinion 31 meshing with the rack.
And a motor 32 for rotating the pinion in forward and reverse directions.
Be composed. The front end of the connecting portion 22 (A, B)
A shutter 34 (A, B) is provided.
Is appropriately opened and closed, so that the upper seedling box mounting portion 21
Exchange the seedling box of (A) with the seedling box of the lower seedling box mounting part 21 (B).
The seedlings are supplied to the seedling box transport section 23 mutually. FIGS. 7 and 8 show upper and lower connecting portions 22 (A,
B) represents the portion where the two meet. Lower connection section 22
(B) shows that the seedling box 300 is supported by the bottom plate 36 from below.
The ears 307, 307 are attached to the side rails 37, 37.
The seedling box 300 is guided by sandwiching it. Bottom plate 3
6 is higher than the surroundings,
Is engaged with the central boundary 306 of the seedling box 300.
Thus, the right and left positions of the seedling box 300 are regulated. Also, the upper row
Is connected to the central boundary 306 of the seedling box 300.
And a center rail 38 for engaging the center rail.
-Support the seedling box and regulate the left and right position by the rail 38
I have. The lower rear end of the center rail 38 is located at the center of the bottom plate.
36a is inserted into the opening 39 formed on the upper surface.
So that it does not shift left and right. Connection 2 at the bottom
When the seedling box passes through 2 (B), the chain line in FIG.
As shown, after the center rail 38 by the seedling box 300
The end is pushed up. Also, as shown in FIG.
Structure in which the rear end of the handle 38 spans over the center portion 36a of the bottom plate
It may be. This structure is the rear end of the center rail 38
After the part is pushed up, it engages with the bottom plate center part 36a again.
When the rear end of the center rail 38 is
a is surely performed. [0016]Seedling box automaticThe feeder 15 is shown in FIGS.
The configuration is as shown. 44 is a bottom plate, 45 is a holding bracket
Then, the seedling box is sandwiched between the ears 307 of the seedling box by both 44 and 45.
You will be guided. In the lower part of the presser fitting 45,
A vertically long rectangular opening 45a is formed. Reference numeral 50 denotes a first feed rod, and an opening of the holding member 45 is provided.
Inserted into the part 45a and engaged with the lower wall surface of the claw hole 308 of the seedling box
The claw 51 is provided. The first feed rod 50 has a swing arm.
A torque spring 55 is attached to a roller shaft 54 provided at the tip of the
Attached to the seedling box route side via
And the swing arm 53 swings about the support shaft 57.
It moves up and down with it. 1st feed rod
When 50 is at the lower limit position, the nail 51 is moved to the seedling pushing position 27.
It is set to be located in. Swing arm 53 sends seedling
It is driven via the connecting rod 58. Reference numeral 60 denotes a control rod which is inserted into the opening 45a.
And a claw 61 for engaging with the upper wall surface of the claw hole 308 of the seedling box.
I do. The stopping rod 60 is moved by a torque spring 63 into a seedling box.
It is supported by the support shaft 62 while being urged toward the path.
The sliding contact portion 60a at the lower part of the control rod 60 is
When the swing arm 53 moves upward, it comes into contact with the slide
60 is pushed to the right and the claw 61 comes off the claw hole 308
Swelling. Further, the seedlings are fed to the upper side of the sliding contact portion 60a.
A stop recess 60b is formed,Manual feed lever 75Operate
When the swing arm 53 is rotated upward to the maximum
The shaft 54 fits into the recess 60b, and the pawl 61
8. Reference numeral 65 denotes a leaf spring brake, which is a hook portion 65a.
Is engaged with the claw hole 308, and the seedling box falls under its own weight.
It acts to prevent you from doing so. FIG. 9 shows a state in which the swing arm 53 swings downward.
And the claw 51 of the first feed rod 50 and the stop rod 60
Is inserted into the opening 45a.
Upper wall of the claw hole 308 of the seedling box (in the initial state, the seedling box
Of the seedling box 300 is kept stationary.
Is held. FIG. 10 shows a state in which the swing arm 53 has swung upward.
And the first feed rod 50 moves upwards to
51 slides along the upper wall surface of the claw hole 308, and the claw 51 is a claw.
While being pushed out of the hole 308,
Then, the lower part of the control rod 60 is rotated backward, and the claw 61 is also claw hole.
Deviates from 308. By the action of the leaf spring brake 65,
Thus, the seedling box 300 is held at the same position. The swing arm 53 faces downward from the state shown in FIG.
Is rotated, as shown in FIG.
51 is fitted into the claw hole 308. At this point, the control rod is still
The nail 61 of 60 is out of the nail hole 308. In this state
When the swing arm 53 further rotates, the claw 51
Push down the lower wall of the claw hole 308 to remove the seedling box 300
It is transported by the distance of p. Note that the upper seedling box falls under its own weight.
You. When the swing arm 53 rotates to the bottom dead center, the roller shaft
The restriction by 54 is released and the claw 61 is fitted into the claw hole 308
Then, it returns to the state of FIG. In addition, an appropriate position on the downstream side of the first feed rod 50
Is provided with a second feed rod 70 having a feed claw 71.
A swing arm 73 to which the second feed rod 70 is attached;
The connecting rod 74 is connected to the swing arm 53 of the first feed rod 50.
Are linked. Of the first feed rod 50 and the second feed rod 70
The distance is less than one seedling box. Because of this, the final
Even if the seedling box passes the seedling pushing position 27, the seedling box is
It can be fed by the feed rod 70. However, on the spot
If the planting section stopsHas beenSo, for the seedling box sending
The three drive shafts 213 are rotated using the manual feed lever 75,
You. As shown in FIG. 12, the manual feed lever 75
To rotate the swing arm 53 upward to the maximum.
The roller shaft 54 is fitted into the seedling feed stop recess 60b,
61 is inserted into the claw hole 308.
The seedling box is supported with the operation stopped. Seedling box is no longer sent
Then, seedlings will not be supplied to the seedling collecting position.
Seedlings cannot be planted. In other words, planting seedlings in two-row units
Can be stopped,Seedling box automaticFeeding device 15
Is functioning as a ridge clutch. This row club
The switch does not require any special components for the clutch,
It is simple and inexpensive. The seedling pushing device 16 is provided with the seedling box feeder 14.
From the seedling box located at the seedling extrusion position 27
A certain number of seedlings (14 in the illustrated example) pushed backward
Are provided. Seedling push pin 10
.. Are supported by a common support 101,
Seedling push rods 102, 102 connected to both ends of the body
Move back and forth, and the seedling push-out pins 100,.
At this time, the seedling pushing pin is inserted into the seedling pushing hole 303 of the seedling box.
To push the seedlings in the pot 301 backward.
You. The drive mechanism of the seedling pushing rod is constructed as follows.
Has been established. Reference numeral 105 in FIG. 14 denotes a gear case.
The base of the seedling pushing rod 102 is inside the gear case 105.
Slidably supported by Seedling push rod 102
A rack 106 is formed at the base and meshes with the rack.
The fan-shaped pinion 107 is provided in the gear case 105
I have. Pinion 1 in left and right gear cases 105, 105
07 and 107 are attached to a common shaft 108, and this shaft
Swing arm 1 fixedly attached to one end of the arm 108
09 and a drive arm 1 attached to a second drive shaft 212 to be described later.
10 are connected by a buffer connection body 112. Buffer connection
The body 112 is connected to the cylinder 113 on the side of the swing arm 109 and the drive arm.
The rod 114 on the arm 110 side is slidably fitted
115 and a cylindrical body fitted to an intermediate portion of a pad 114
Springs 116 and 117 are interposed between the upper and lower walls of 113.
It is. The drive arm 110 is moved in the direction of the arrow from the position shown in FIG.
, The force to push up the rod 114 is applied to the spring 11
6 to the cylinder 113, and the swing arm 109
Rotate upward, and pinion 107 further rotates clockwise
, And the seedling pushing pins 100,. Drive arm 1
When the rotation of 10 exceeds the dead center, the compressed spring 11
6 rebounds, the shock-absorbing connector 112 contracts and swings.
The arm 109 rotates downward, and further the pinion 107
Rotates counterclockwise, and the seedling pushing pins 100,.
You. That is, the protrusion of the seedling pushing pins 100,.
Is forcibly driven through a spring 116 which is
The retraction of the pins 100,... Is rapidly performed by the spring 116.
It is done. Seedling push pins 100, ... to predetermined position
When retracted, the flange 115 moves to the step 113 of the cylindrical body 113.
aReThe subsequent downward movement of the rod 114 is spring
And the seedling pushing pin 10
The overstroke of 0,... Is prevented. Further, this seedling supply device detects a seedling extrusion error.
It is equipped with a recognition device (FIGS. 22 to 24). This detector
The placement of the seedling pushing position 27 near the rear of the seedling box transport section 23
Stretch wire (or rod) 118 horizontally at lower position
The wire is pushed by the leaves 310b of the seedling
Switches SW1 and SW2 turn on when 118 moves down
The alarm lamp 119 is turned on.
You. The switches SW1 and SW2 operate at both ends of the wire 118.
One of these switches
, The alarm lamp 119 lights up
So, if the seedling extrusion mistake occurs in the pot near the edge
Can be detected accurately. 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 the end of the pair of links
Connecting shafts 121b, 121b, 122b, 122b at the ends
Parallel with brackets 123, 123 connected by
A link device, and left and right brackets 123, 123
A seedling holder 125 is provided therebetween. Seedling holder 12
5 has a concave portion 1 into which the floor soil portion 310a of the seedling 310 fits.
.. Are formed.These 125 receive seedlings
It is a seedling receiving part to hold. A seedling holder 1 is provided on the front of the seedling holder 125.
25 receives seedlingsSide receiptSeedling extrusion when in position
Abuts on the upper surface of the seedling box (the side with seedling leaves)
DoAs a protrusionProjections 130 are formed. This
The protrusion 130 is formed in the upper part of the front surface of the recess and the partition wall 125b of the recess.
That is, the upper part than the bottom partProvided integrally with the partition
Have been.For this reason, the contact portion between the projection 130 and the seedling box
Area is small, and a gap is formed below the protrusion.
The seedling leaves are pinched between the seedling holder 125 and the seedling box.
Is prevented. In addition,A projection 130 is provided on each partition 125b.
There is no need to provide, so the seedling box can be prevented from bending to the seedling holder side.
It may be provided to the extent possible (four locations in the illustrated example). The drive mechanism of the seedling transfer device 17 is a lower link.
Oscillating arm attached to the support shaft 122a
Arm 131 and a drive arm attached to the second drive shaft 212.
Arm 132 is connected by a buffer rod 133 and the drive arm 13
2 is rotated in a certain direction to swing the swing arm 131.
It is configured to: The buffer rod 133 is a swinging arm.
Rod 133a on the arm side and rod 133b on the drive arm side
, So that both transmit power through the spring 134
It has become. 135 and 136 in FIG.
This is a stopper for regulating the vertical rotation range of the lock 132. By the operation of the driving mechanism, a pair of left and right links is provided.
121, 121, 122, 122 swing up and down,
Fig. 125FifteenSeedling receiving position (E) and seedling release in Japan
Move between positions (FG). Seedling holder 125 is F-
Rotation fulcrum of links 121 and 122 when at the midpoint of G
The connecting shaft 121 is located immediately below the supporting shafts 121a and 122a.
b, 122b are located.
The da 125 moves almost horizontally forward between the FG and
Become. The seedling removing device 18 is attached to the L-shaped arm 140.
It has a seedling removal tool 141 attached. This seedling and
The tip of the holding tool 141 has a holding recess 12 of the seedling holder 125.
It is branched so that it can be inserted into 6, ...
Seedling removal part 141a that receives the bottom of seedbed soil part 310a and seedling
Seedling striking part 141b abutting on the upper surface of floor soil part 310a
Is formed. The L-shaped arm 140 pivots on the support shaft 143.
It is supported. And near the seedling removal cam
A cam row which is provided with an outer peripheral surface of the cam;
145 is mounted in place on the L-arm 140
You. The L-shaped arm 140 is driven by a cam 144 by a spring 146.
It is urged in the direction of. The cam 144 is shown in FIG.
When the seedling holder 125 has reached the point G
Then, the cam roller 145 falls into the concave portion 144a,
The seedling removal tool 141 moves down momentarily with the force of 146.
After the downward movement, the cam roller 145 pushes against the overhang portion 144b.
And the seedling removal tool 141 is raised to a higher position than before the downward movement.
It works. Note that the cam 144 is also the second
It is attached to a drive shaft 212. The seedling holder 125 is at the seedling receiving position (E).
At the time, seedlings are pushed out of the seedling box by the seedling pushing device 16.
The seedlings are placed in the recesses 125a,.
Pushed. At that time, the seedlings' floor soil portions 310a, ... and the seedlings
Seedling pushing pin 1 by friction with box pots 301, ...
The power of 00, ... is also transmitted to the seedling box, and the seedling box 300 is pushed out.
The part in the position tries to bend to the upper side (rear),
Projections 130,... Of the seedling holder 125 are provided on the upper surface of the box 300.
Due to the contact, the bending is prevented.in this way,
Since the seedling box 300 comes into contact with the seedling holder 125, the seedling is pushed out.
The seedling box does not bend at the position where the pins 100,.Seedling push
Pins 100,... Are located at the center of seedling extrusion holes 303,.
The seedlings are always well extruded. Next, while holding the seedling, the seedling holder 125
Rotates to the seedling release position (FG). Seedling holder 125
When seedling moves from point F to point G, seedling removal tool 141
Are inserted into the recesses 125a of the seedling holder.
Then, the seedlings held in the recesses are pulled out relatively rearward.
Is done. As described above, the seedling holder 125 substantially moves between the FGs.
Because it moves forward horizontally, the seedling removal parts 141a,.
Are inserted straight into the parts 125a,.
The seedling removal from the rudder 125 is performed favorably. In addition, seedlings
When the holder 125 reaches the point G, the seedling removing tool 141
Move downward, and the seedling hitting portions 141b,.
The extruded seedlings onto the seedling transport belts 19, 19
Drop it. After the seedling removal tool 141 is moved downward by knocking the seedling,
Seedlings move up above the level of Luda 125
Seedling holder 141 and seedling holder 12 returning to seedling receiving position5 andDried
Negotiations do not occur, and no accidents such as the two being caught are caused. The seedling transport belt 19 is formed of two adjacent strips (L,
R) are paired with each other.
G (L, R) are bilaterally symmetric. Seedling
The conveyor belt 19 is stretched over a pair of rollers 150 and 151.
That the drive roller 150 rotates in a predetermined direction.
As a result, the belt always moves in the direction of the arrow
I have. The 14 seedlings transferred from the seedling transfer device 17
7 pieces are placed on the upper surface of the left and right seedling transport belts 19 (L, R).
Can be done. Then, the seedlings are transferred to the seedling transport belt 19 (L,
R) is transported outward and the seedling collecting position T of the planting device 12₁
And supply the seedlings one by one. Also, the seedling picking position T₁ of
At the bottom, the seedlings are planted by the planting device 12 to the field scene.
A guide plate 153 for guiding is provided.
You. The planting device 12 has a circular shape in a side view.
Case 160 and a pair of spatula-shaped members provided on the rotary case.
And the implantation rods 161 and 161. Rotary car
As shown in FIGS. 22 and 23,
Has become. In the figure, 163 is after the transmission case 10
An implanting device mounting shaft supported at an end thereof;
Fixed metal 165 is fitted to the tip of key by key 164
And a rotary case housing
166 is fixed. Therefore, the rotary case
160 rotates integrally with the planting device mounting shaft 163. planting
An annular guide groove 168a is provided around the device mounting shaft 163.
Is fitted. This mosquito
The housing 166 by a bearing 169.
To be rotatable and fixed to the transmission case 10.
Integrated with the fixed plate 170 by the claws 168b.
ing. A pair of rows is provided in the guide groove 168a of the cam 168.
172 and 172 are fitted. These rollers 172
Is an arm 1 rotatably fitted around the support shaft 173.
74. The arm 174 has
The gear 174 is formed with a mounting rod.
A gear 178 attached to the shaft 177 meshes. Implantation
The rod 161 is fixed to the implanted rod mounting shaft 177 with a cotter pin 179.
It is attached to a fixed state. The mounting shaft 163 rotates in a predetermined direction.
Then, the rotary case 160 integrated with this also rotates
Then, while the implantation rod 161 draws the closed locus T (see FIG. 18),
Move from At this time, the rollers 172 and 172
Moving along the guide groove 168a of the moving cam 168
The arm 174 swings, and the swing is caused by the gear 175
It is transmitted to the implanted rod mounting shaft 177 via 178. this
Therefore, the angle of the implanted rod 161 changes slightly during the movement.
Let That is, the seedling collecting position T₁ Horizontal when passing through
And the seedling picking position by the seedling transport belt 19
T₁ Is parallel to the seedling 310 supplied to the cultivator. And low
Keeping the same posture with respect to Tali case 160
Rotate down and plant seedlings through guide plate 153
Attached position T_Two Lead to. After planting, the implanted rod 161
Posture to rotate forward relative to the base 160.
By making it, the implantation rod 160 is absolutely
It operates as if it were pulled out, so that the planting rod 161 and the seedling
Separation was performed without difficulty, and the posture of the planted seedling 310 was disturbed.
Absent. The transmission case 10 has three mixers arranged in parallel.
Of the mission cases
Four extension cases 18 added to the interval and the outer end
1, ..., four ties fixedly connected to the back of each extension case
Each part of Encase 182,...
The rear of the transmission case 180 is a cylinder that protrudes left and right.
And the tubular portions 180b, 180b
Are fixedly connected to the cases 181,. Central Misshi
The input part 183 is formed integrally with the case 180 (C).
Have been. Also, the central mission case 180
At the front end of (C), a lorry connected to the planting section mounting device 5
NingAxisIt is rotatably supported, and the entire planting section 3 is a book.
The machine 2 is supported so as to be able to roll. Soshi
And the rear ends of the two chain cases 182 (2, 3)
Inside the rear end of the chain case (1, 4) on both sides and on both sides
Are provided with a total of six planting devices 12, one for each.
You. Next, the internal structure of the transmission case 10 will be described.
(See FIG. 21). FIG. 21 is a developed sectional view.
And the orientation and positional relationship of each part are different from the actual
ing. The PTO output of the main unit 2 is input to the input section 183.
Input to the force shaft 185, and from the input shaft
, 180,... And the extension case 181,
… A pair of bevel gears to the first drive shaft 186 supported inside
190,191. This transmission is safe
It is configured as a clutch. That is, the gear 190
Are rotatably fitted to the input shaft 185,
5 and gear 190 are transmission-coupled through a clutch body 192.
Have been. This clutch body 192 is connected to the input shaft 185.
The clutch body 1 is slidable by the spring 193.
92 is pressed toward the gear 190, so that both transmission claws are
190a and 192a are engaged. this
Therefore, when the load exceeds a certain level, the spring 193 is pushed.
The clutch body 192 disengages from the gear 190 against the pressure,
Transmission is stopped. Tube receiving spring 193
195 in a direction away from the clutch body 192.
If it is shifted by 6, the transmission is stopped regardless of the size of the load.
You. 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 to each axis in the transmission case main body 180a,.
Gears 202 for transmission are attached.
You. The first drive shaft 186 is divided into two segments.
It consists of three shafts 186 (L, C, R).
Connected by two center sprocket wheels 200, 200
It has a structure. The sprocket wheels 200,.
Sprocket wheel attached to the attachment shafts 163, ...
Chains 205, ... are stretched between
The rotation power of the first drive shaft 186 is
... is always communicated to. The bevel gears 201,.
A bevel gear 208 attached to a moving roller shaft 207,.
Are engaged with each other, and the seedling transport belt is moved from the first drive shaft 186.
Are transmitted directly to the drive roller shafts 207,. The mission case 180 is a component of the planting section 3.
Planting part drive case provided with a drive shaft for driving the
In the transmission case 180, a first drive shaft 186 is provided.
In parallel with the counter shaft 211, the second drive shaft 212, and
And a third drive shaft 213. And the second drive
The seedling pushing drive arm 11 is provided on both left and right ends of the driving shaft 212.
0 and seedling transfer drive arm 132 are separately installed
Seedlings near the outer surface of the case.
A cam 144 is mounted. Also, the third drive shaft 2
A seedling 13 has a tip connected to the seedling feed rod 58.
A feed drive arm 58a is attached. The counter shaft 211 is moved from the first drive shaft 186
To the second drive shaft 212 via the two sets of gears 202 and 21
5 and 216, 217 at a reduced speed.
Also, a cam is provided from the second drive shaft 212 to the third drive shaft 213.
Driven by the drive, the third drive shaft 213 is intermittently driven.
219 is a cam attached to the second drive shaft 212, 220 is
Supported by an arm 221 attached to the third drive shaft 213
Cam roller. The transmission portion between the gear 217 and the second drive shaft 212
Is provided with a ridge clutch 230 configured as follows.
I have. The gear 217 is rotatable about the second drive shaft 212.
The clutch body 231 is
The gear 2 is non-rotatably and slidably fitted to the driving shaft 212.
17 and the pawl 231a of the clutch body 231.
It is designed to transmit in combination. Clutch body 23
1 is biased toward the gear 217 by a spring 232
Therefore, the clutch is always engaged. clutch
The clutch pin 233 is pressed against the tapered surface 231b of the body 231.
When it hits, both claws 217a and 231a come off and
Latch off. At this time, the clutch body 231 has a predetermined angle.
The clutch is set to disengage when
You. Therefore,Seedling box automaticFeeding device 15, seedling pushing device
16, seedling delivery device 17 and seedling removal device 18
The clutch is turned on and off in units of
When the switch is turned off, each of these devices is stopped in a fixed position. On the lower side of the planting section 3, a float for leveling is provided.
And the center float 250 located at the center of the left and right
(C) and the side flow located behind the rear wheel of the machine 2
250 (L, R). Each float 2
50 (L, C, R) has a wide front part and a narrow rear part
Grooves for forming seedling transplant grooves on the left and right sides of the rear
Are mounted. Float 250
(L, C, R) are rotatable up and down on the transmission case 10.
Rotate up and down around the rear end of the float support rod (not shown)
It is movably pivoted and the front part is an expansion / contraction link 2
55, and the front part according to the unevenness of the paddy surface
Moves up and down. Center float 250 (C) is paddy field height
Sensor to detect the height of the center float
The hydraulic valve 2 for controlling the hydraulic cylinder 6 based on the movement
57 spools are switched, and the planting part 3
Control to a constant height. Therefore, the seedling depth
Is always kept constant. The float supportRodPivoted
The support height of each float to
The application depth can be adjusted. The fertilizer applicator 4 includes a hopper 26 for storing fertilizer.
0, a feeder 261 for feeding the fertilizer in the hopper downward,
A fertilizer fed from the feeder is guided to a ditch for planting seedlings.
It consists of a fertilizer pipe 262 and the like. At the time of planting work, the seedlings
The seedling box containing the seedlings is loaded, and the planting section 3 is moved to the working position shown in FIG.
To start the machine 2. The planting part 3 is driven
The seedling box is transported along the specified transport path.
During the transportation, the seedlings are pushed by the seedling pushing pins 100,.
Seedlings are extruded from the box, and the extruded seedlings are placed in a seedling holder.
The seedling removal tool 141 holds the seedling and transfers it downward.
The seedlings held by the holder 125 are placed on the seedling transport belt 19.
And the seedling transport belt 19 removes the seedlings one by one.
Seedling picking position T₁ To supply. And the seedling picking position T₁ To
The supplied seedlings are planted in the field scene by the implantation rod 161.
I will be. [0053] As described above, the seedling according to the present invention
The feeding device pushes the seedling push pin from the seedling box to the seedling holder.
When inserting the seedling box, the seedling holderProjection that is the protrusion ofAbut
Therefore, the seedling box does not bend at the position where the seedling pushing pin pushes out.
The seedling push pin and the seedling pushing of the seedling box
Prevents misalignment of the exit hole and ensures that seedlings are always pushed out.
It became possible to be done.Also, the protrusion
The concave portion, which is the seedling receiving portion of the seedling holder,
There is a gap between the seedling box and the seedling box.
There is no intrusion. Seedling holder (recess) of seedling holder
Is surrounded from below and from the left and right sides by the bottom and the partition
But the seedling holder is
When the ascending from the seedling release position on the side to the seedling receiving position,
Seedling leaves are sandwiched between the seedling holder and the seedling box at the top of the seedling holder.
Easy to escape so as not to be. On the other hand, in the lower part of the seedling holder
It is easy to get caught between the holder and the seedling box.
The bottom part of the seedling receiving part (recess) at the seedling receiving position
Since it is located at a higher level, at the bottom of the seedling holder
There is little contact between the seedling holder and the seedling box,
Can be prevented from being caught between the seedling holder and the seedling box.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a rice transplanter. FIG. 2 is a side view of the planting section. FIG. 3 is a plan view of a planting section. FIG. 4 is a rear view of the planting section. FIG. 5 is a plan view of a main part of the planting section. FIG. 6 is a plan view of a main part of the planting portion different from FIG. FIG. 7 is a front sectional view of a confluent portion of an upper connecting portion and a lower connecting portion. FIG. 8 is a side cross-sectional view of a junction of an upper connecting portion and a lower connecting portion. FIG. 9 is an operation explanatory view 1 of the seedling box feeding device. FIG. 10 is a second diagram illustrating the operation of the seedling box feeding device. FIG. 11 is a third explanatory diagram of the operation of the seedling box feeding device. FIG. 12 is an explanatory diagram 4 of the operation of the seedling feeding device. FIG. 13 is a side view of a main part of the planting section. FIG. 14 is a side view of the seedling pushing device. 15A is a side view of a seedling delivery device and a seedling removing device, and FIG. 15B is an explanatory diagram of a seedling removing cam. 16A is a front view of a seedling holder, and FIG. 16B is a bottom view of the seedling holder. FIG. 17 is a sectional view taken along the line SS in FIG. 16 (a). FIG. 18 is a side view of the planting device. FIG. 19 is a sectional view of the planting device. FIG. 20 is a side view showing the internal structure of the planting device. FIG. 21 is a developed sectional view of a transmission case. FIG. 22 is a rear view of the seedling pushing error detecting device. FIG. 23 is a side view of the seedling pushing error detecting device. FIG. 24 is an electric circuit diagram of a seedling pushing error detecting device. FIG. 25 is a front cross-sectional view illustrating a different embodiment of a confluent portion of an upper connecting portion and a lower connecting portion. FIG. 26 is a plan view of a seedling box. 27 is a view as viewed in the direction of the arrow A in FIG. 26. FIG. 28 is an enlarged plan view of a seedling raising pot. [Description of Signs] 1 Rice transplanter 2 This machine 3 Planting unit 4 Fertilizer device 5 Planting unit mounting device 100 Seedling pushing pin 125 Seedling holder 130 Projection 300 Seedling box 303 Seedling pushing out hole 310 Seedling

Continuing on the front page (72) Inventor, Sumi Fukushima, 1-Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. (56) References JP-A-55-99106 (JP, A) JP-A-62-130610 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02

Claims (1)

(57) is inserted from the Patent Claims 1. A hole formed in the bottom of the seedling box into the pot for seedling seedling box, and seedlings ejector pin for pushing out the seedlings from the pot, 該苗extrusion pin Seedlings extruded with
And a seedling holder for receiving the seedlings.
Up and down between the seedling receiving position and the seedling release position below the seedling receiving position
To transfer the extruded seedlings to a predetermined position.
And the seedling holder has a bottom portion for receiving the seedlings.
And a seedling receiving portion comprising a concave portion having
And is pushed out by the seedling pushing pin
Projection that comes into contact with the seedling box when the seedlings are pushed into the seedling holder
And the protrusion is integral with the partition wall,
The right and left positions are almost the same as the bulkhead in the
At the picking position, it is placed higher than the bottom
The seedling supply apparatus characterized by being provided so that it may be.