JPH10271902A - Tractor-driven transplanter - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a tractor-retractable transplanter that improves the efficiency of planting work and that takes into account the balance and workability of each part of the transplanter. SOLUTION: From the front to the rear, a rotary tillage device 3, a grooving device 4, a ground contact wheel 5, and a transplanting portion 7 are arranged. A seedling holder 9 is provided above the tilling device 3, and a grooving device 4 is provided. And ground wheel 5
And a seedling supply device 11 for supplying seedlings to the transplanting part 7 on the side of the worker boarding part 34 behind the seedling placing part 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor-traction type transplanter for planting sugarcane seedlings.

[0002]

2. Description of the Related Art Conventionally, as a transplanting machine for transplanting sugarcane seedlings, there is a transplanting machine provided with a soil cover behind a ridger.
In this case, when transplanting sugarcane seedlings, after performing leveling work using a tilling machine, etc., form a groove, drop the long stem culm that was cut in advance there, and then cover the soil Like that.

[0003]

However, the prior art has a problem that the efficiency of the planting operation is poor. Therefore, it is conceivable to improve the work efficiency by performing a series of planting operations such as tilling, grooving, supplying seedlings to the transplanting part, planting, and covering soil in one process. It is necessary to consider the balance, workability, etc. of the device, the channeling means, the seedling supply device, the transplanting unit, the seedling placing unit, and the operator's boarding unit.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tractor-retractable transplanter in which the efficiency of the planting operation is improved and the balance and workability of each part of the transplanter are taken into consideration.

[0005]

The technical measures taken by the present invention to achieve the above object include a rotary tilling apparatus 3, a groove forming means 4, a ground contact wheel 5, and a transplanting portion, from the front to the rear. 7, a seedling holder 9 is provided above the tillage device 3, a work table 10 is provided above the groove forming means 4 and the grounding wheel 5, and a side of the worker boarding part 34 behind the seedling holder 9. And a seedling supply device 11 for supplying seedlings to the transplanting unit 7.

[0006] The transplanting section 7 is provided with a plant 117 that moves up and down to transfer the seedling supplied from the seedling supply device 11 to the bottom of the groove formed by the groove forming means 4. It is preferable to provide a scraper 141 for removing soil adhered to the planting body 117 when the planting body 117 rises. In addition, the seedling supply device 11
A plurality of seedling holders 66 that hold seedlings and can be released to the transplanting section 7 are provided. The seedling holders 66 are fixed at predetermined intervals to a chain 70 mounted between a pair of front and rear sprockets 68 and 69. It is good to do.

A water storage tank 18 is provided at the front of the tractor 1.
0 is preferably provided to irrigate the water in the water storage tank 180 into the seedling planting portion. Further, it is preferable that the lower end of the groove forming means 4 is located above the lower end of the tilling unit of the tilling device.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a schematic side view and a schematic plan view of a sugarcane transplanter 2 mounted on the rear part of a riding type tractor 1.
In the order from the front to the rear, a rotary tillage device 3, a groove forming means 4, a ground contact wheel 5, a soil covering means 6, a transplanting part 7, and a pressure suppression means 8 are arranged in order from the front to the rear. And a work table 10 is disposed above the groove forming means 4 and the ground contact wheel 5, and a seedling supply device 11 is disposed at the center of the upper side of the work table 10 in the left-right direction. Holder 9
Fertilizer applicator 12 and chemical sprayer 13 are arranged between them (see FIG. 3).
Being mainly composed.

Note that the front-back direction refers to the traveling direction of the tractor 1, and the left-right direction refers to the lateral direction orthogonal to the traveling direction of the tractor 1 and the right and left when the tractor 1 moves in the forward direction. The rotary tillage device 3 is configured as a center drive type rotary tillage device, and includes a device frame 14, a tillage portion 15, a tillage cover 16, and the like. The device frame 14 has support arms 18 projecting from the gear case 17 at the center in the left-right direction on both left and right sides, and a transmission case 19 projecting downward from the gear case 17.

The tilling unit 15 is provided below the transmission case 16.
The claw shaft 20 protrudes from the left and right sides, and a large number of tilling claws 21 formed of claws (or L-shaped claws, ordinary claws, etc.) are mounted and fixed on the claw shaft 20. Is provided above the tillage portion 15 so as to cover the tillage portion 15.
The input shaft 22 provided on the gear case 17 is linked to a PTO shaft 23 of the tractor 1 via a universal joint, and the power from the tractor 1 is
The power is transmitted to the claw shaft 20 via a transmission mechanism in the transmission case 19 and in the transmission case 19, and the claw shaft 20 is driven to rotate in the direction of arrow A in FIG. Plow, crush, and throw backwards.

In the illustrated example, the tilling claw 21 provided on the left and right claw shafts 20 is bent outward from a central portion in the left-right direction, and shifts outward in the left-right direction as it goes rearward. Although it is configured to be released in the inclined direction, the arrangement is not limited to this, and the arrangement of the tilling claws can be changed as appropriate. Further, the rotary cultivator 3 may be a side drive type rotary cultivator, and the cultivator 15 may be configured with a rotor or the like used for a tiller.

The device frame 14 has an upper connecting portion 26 composed of a pin or the like connected to a top link 25 of a three-point link mechanism 24 mounted on the rear portion of the tractor 1, and a left and right lower part of the three-point link mechanism 24. A pair of left and right lower connecting portions 28 including pins and the like connected to the link 27 are provided. Therefore, when the lift arm 30 is moved up and down by the hydraulic device 29 provided on the rear part of the transmission case of the tractor 1, the lower link 27 is moved up and down via the lift rod 31 and the transplanter 2 can be moved up and down.

The device frame 14 is provided with a support frame 32 which is formed by being framed by a rectangular cylinder and a mold steel so as to project rearward. The support frame 32 includes a groove forming means 4 and a grounding wheel 5. The soil covering means 6, the transplanting part 7, the crushing means 8, the seedling placing part 9, the workbench 10, the seedling supply device 11, the fertilizer applicator 12, the chemical sprayer 13 and the like are supported. The work table 10
Is formed from the tilling device 3 to the transplanting portion 7 and is attached to and supported by the support frame 32 and the device frame 14,
The tractor 1 is framed by a long material 10A such as a type rope, and a floor material 10B having holes formed in a mesh shape on both right and left sides is stretched. I have. Also, a frame member 3 framed by a long material such as a mold rope is provided on the left and right side surfaces and the front surface of the worktable 10.
3 is provided, and on the lower side of the frame member 33, a wall material having a mesh-like hole is stretched.

A seedling holder 9 is provided at the front of the worktable 10, and the worker's boarding part is located behind the right seedling holder 9 of the worktable 10 and on the right front side of the seedling supply device 11. (Working unit) 34. In the worker boarding section 34, the worker moves toward the normal seedling supply device 11 (the worker boarding section 34).
(Directly or through a seat) on the flooring 10B. Therefore, since the seedling placement part 9 is on the right side of the worker and the seedling supply device 11 is on the front side of the worker, workability is good.

The left side of the front part of the seedling supply device 11 may be an operator's boarding section 34. Usually, the worker works alone. ,
In addition, the worker may ride on the front left portion of the seedling supply device 11 and perform the work by two persons. Further, the portion may be used as a seedling holder. The seedling holder 9 is provided with a plurality of (five in the example in the figure) mounting shelves 35 on which seedlings are placed, at intervals at which the seedlings can be inserted in the vertical direction. This mounting shelf 3
In 5, a seedling tray T on which a large number of seedlings have been raised is placed,
Usually, the operator places the lowermost shelf 35 of the seedling holder 9 on the right side.
The seedlings T are taken out one by one from the seedling trays T placed in the seedling supply device 11 and supplied to the seedling supply device 11. Replace with the seedling tray T on the shelf 35.

The shelf 35 is detachable. The seedlings used in the present embodiment are soil block seedlings raised by a seedling tray T. The seedling tray T is made of plastic and has a large number of pot portions arranged in a grid pattern at predetermined pitches vertically and horizontally. P, the upper end opening edges of the pot portion P are connected to each other in a planar manner, and the pot portion P is filled with floor soil, sowed and cultivated there, whereby the sugar cane seedlings S are grown. (See FIG. 3).

The seedlings used are pot seedlings grown in a continuous paper cylinder (chain pot: continuous pot) in which hexagonal cylindrical paper pots are connected in a row with antiseptic paper. Of course, a paper pot seedling or a pulp mold pot seedling may be used. The groove forming means 4 is mainly composed of a ridger (or a ridger, a cultivator, etc.) composed of a pair of left and right earth discharging plates 37 whose front ends are joined and gradually expanded toward the rear. The tractor 1 is fixed to the support frame 32, and the soil cultivated by the advance of the tractor 1 is swelled to the left and right sides from the center in the left and right direction to form embankments on the left and right sides. Therefore, the central portion in the left-right direction becomes a groove.

The lower end of the grooving means 4 is located above the lower end of the tilling unit 15 of the tilling device 3.
The bottom surface of the groove formed by the above is located slightly above the tillage of the rotary tillage, and a gap (about 10 cm) is formed between the bottom surface of the groove formed by the groove making means 4 and the top surface of the tillage. Has become. This is because, as described later, the seedlings are planted in a state where they are placed on the bottom surface of the groove formed by the grooving means 4, and the seedlings are planted on the tilled soil to improve root growth and the like. That's why.

Further, since the grooves are formed by the groove forming means 4 after the soil is softened by rotary tilling (while softening), it is better for growing even in clay soil as compared with the case of forming grooves with only the ridger. A groove having an optimum depth can be formed satisfactorily, and the drainage property is also good. Also, in the case of grooving with only the ridger, when the grooving work is performed after rain, the soil sticks to the ridger and causes a drag phenomenon, and a clean ridge (groove) cannot be formed. In the case of the form (1), the soil which has been repelled by the tilling claws 21 is received by the earth removal plate 37 and the soil is moved to the left and right sides, so that the soil is less attached and a clean ridge can be formed.

Further, since the soil used on the left and right sides of the ditch used for covering soil is rotary tilling, the soil mass is small, so that it has good adhesion to seedlings and good growth. The grounding wheel 5 is formed by a tire, is disposed on the left and right sides in front of the groove forming means 4, and is supported at the lower end side of the transmission case 38 so as to be rotatable around a left-right axis. 1, 2 and 4, the upper end side of each of the left and right transmission cases 38 is disposed in the left and right direction, and is rotatably supported on the support frame 32 via a bearing 39 around the left and right axis. An outer end of the drive shaft 40 is supported via a bearing 41 so as to be relatively rotatable around a left-right axis.

Each of the left and right transmission cases 38 is provided with a biasing means 42 for biasing the grounding wheel 5 downward. The urging means 42 includes a screw shaft 44 pivotally mounted on a bracket 43 fixed to the upper end side of the transmission case 38 so as to be rotatable around a left-right axis, and a spring for urging the screw shaft 44 forward. (Coil spring) 45. Screw shaft 4
A pair of front and rear spring receiving members 46 and 47 are externally fitted to the middle part of the screw 4, and the rear spring receiving member 47 is fixed to the support frame 32. 48 and 49 are screwed together, and the spring 45 is fitted over the screw shaft 44 and has spring receiving members 46 and 47.
It is interposed in a compressed state between them.

As shown in FIG. 5, power is transmitted from the ground contact wheel 5 to the drive shaft 40 by power transmission means 50 in the transmission case 38. That is, the power transmission means 50 fixes the driving sprocket 52 to the axle 51 that supports the grounding wheel 5, fixes the driven sprocket 53 to the driving shaft 40, and connects the chain 54 between the driving sprocket 52 and the driven sprocket 53. When the tractor 1 advances, the grounding wheel 5 rotates in the direction of arrow B, so that the drive shaft 40 rotates in the same direction via the power transmission means 50.

In the above construction, the transmission case 38 is urged by the urging means 42 to swing rearward around the drive shaft 40, whereby the grounding wheel 5 is pressed downward, that is, against the ground. Thus, the ground contact wheel 5 is reliably rotated by the forward movement of the tractor 1. Further, since the contact wheel 5 is urged by the spring 45, the followability of the contact wheel 5 to the ground when the transplanter 3 moves up and down is good.

The urging force of the urging means 42 can be adjusted by advancing and retracting the front nut 48, while the rear nut 49 is moved when the transplanter 2 is raised by the hydraulic device 29. In this case, the transmission case 38 functions as a stopper for regulating the rearward swing of the transmission case 38, and the transmission case 38
Is held backward and the nut 49 on the rear side is advanced and retracted, whereby the height position of the contact wheel 5 when the transplanter 3 is raised by the hydraulic device 29 can be adjusted.

As shown in FIGS. 1, 2, 5 and 6,
The soil covering means 6 is composed of a flower-shaped disk having a dish-shaped curved surface, and is provided as a pair of left and right sides.
It is mounted and fixed so that the vertical position can be adjusted. The lower end of the support 55 has a first axis having a direction perpendicular to the support 55.
A support cylinder 56 is fixed, and a first support shaft 57 is inserted into the first support cylinder 56 so as to be rotatable around its axis. The first support shaft 57 is orthogonal to the axis of the support shaft 57. A second support cylinder 58 having a vertical axis is fixed.
, A second support shaft 59 is rotatably inserted around the axis.

The second support shaft 59 is fixed to the third support shaft 60,
A boss 6 provided at the center of the soil covering means 6 on the third support shaft 60
1 is rotatably fitted around the center of the axis, and the above-described structure causes the covering means 6 to move forward and backward in the left-right direction as shown in FIG.
As shown in FIG. 6, it is inclined with respect to the up-down direction D so as to move inward in the left-right direction as it goes upward, and is attached to the column 55. .

Therefore, by moving the tractor 1 forward, the soil on both the left and right sides of the groove formed by the groove forming means 4 is moved toward the center in the left and right direction of the groove by the soil covering means 6. The first support shaft 57 includes a nut 62 fixed to the first support tube 56, and a bolt 63 screwed to the nut 62 and penetrating through the first support tube 56 to contact the first support shaft 57.
By this, the relative rotation with respect to the first support cylinder 56 and the movement in the axial direction are restricted, and the second support shaft 59 is connected to the second support cylinder 5.
8 and a bolt 65 which is screwed to the nut 64 and penetrates through the second support cylinder 58 to abut on the second support shaft 59 to rotate relative to the second support cylinder 58. Movement in the axial direction is restricted.

Accordingly, the slant angle of the earth covering means 6 with respect to the front-back direction C can be adjusted by relaxing the bolt 65, and the slant angle with respect to the vertical direction D can be adjusted by relaxing the bolt 63. .
The seedling supply device 11 supplies the seedlings in the seedling holder 9 to the transplanting unit 7, and employs a rotary pot type seedling transfer mechanism as shown in FIG.
The main part of the worktable 10 is formed from four (four) pots (seedling holding bodies) 66 and a transport body 67 that transports the pots 66.

The carrier 67 comprises a large-diameter drive sprocket 68 at the rear, a small-diameter driven sprocket 69 at the front, and a transport chain 70 mounted over the sprockets 68, 69. Drive sprocket 6
Reference numeral 8 denotes a drive shaft 72 rotatably supported on a support 71 fixedly mounted on the support frame 32 around a vertical axis.
The driven sprocket 69 is rotatably supported on the support 71 via a support shaft 73 around a vertical axis, and the pots 66 are attached and fixed to the transport chain 70 at equal intervals. ing.

Then, by driving the drive shaft 72 to rotate in the direction indicated by arrow E in FIG.
The pot 66 is conveyed in the direction circulating in the direction. As shown in FIG. 9, each pot 66 has an outer cylindrical body 74.
, An inner cylinder 75 inserted and held in the outer cylinder 74, and a bottom lid 76. The outer cylinder 74 is formed in a cylindrical shape with an upper and lower opening, and has an upper end that is open upward. The inner cylindrical body 75 is gradually reduced in diameter as its upper part goes downward, is formed in a cylindrical shape capable of storing the seedlings S upright from the middle part to the lower part, and has an upper and lower opening shape. The bottom lid 76 is formed in a disk shape so as to close the lower end opening of the outer cylinder 74, and the front side in the transport direction F is provided on a support 77 provided at the lower portion of the outer cylinder 74 in the transport direction F via a pivot 78. It is rotatably supported about a horizontal axis that is substantially perpendicular to the axis, and the lower end openings of the outer cylinder 74 and the inner cylinder 75 can be opened and closed.

The direction of conveyance F of the pivot 78 of the bottom cover 76
A spring hook 79 is provided in the front, and a tension spring (coil spring) 81 is hooked over the spring hook 79 and a spring hook 80 provided on the upper part of the outer cylinder 74.
The bottom cover 76 is biased in the opening direction. Also, the bottom cover 76
Of the outer cylinder 7 when the bottom cover 76 is opened.
A contact portion 82 that contacts a contact surface 83 formed as a flat surface is formed at a lower portion of the outer surface of the device 4.

Below the pot 66, there is provided a restricting means 84 for contacting the bottom cover 76 and restricting its opening. The restricting means 84 is made of a bar material, is provided along the transport chain 70, and is supported by the support 71 via a support member 86. Further, the regulating means 84 is omitted so that only the bottom cover 76 of the pot 66 located at the rear end of the seedling supply device 11 is opened. The guide portion 85 is inclined so as to shift rearward in the transport direction F as it goes downward, and the bottom cover 76 is guided by the guide portion 85 to close automatically and smoothly.

Then, on the right side of the seedling supply device 11, the seedlings S are thrown into the pots 66 one by one from the seedling holder 9 by a worker. S is configured to drop downward. Note that, as shown in FIG. 8, the seedling supply device 11 is configured such that the left-right width gradually narrows toward the front, and the seating space of the worker boarding section 34 is widened.

Drive means 87 for driving the drive shaft 72 is provided below the support 71. This driving means 8
7 will be described with reference to FIGS. 10 and 11. A ratchet wheel 88 is fixed to the lower end of the drive shaft 72.
Above the ratchet wheel 88, there is provided a cylinder 89 externally rotatably fitted to the drive shaft 72 via a bearing, and a ratchet arm 90 is fixed to the cylinder 89. A ratchet pawl 91 that engages with each of the engaging teeth 88a of the ratchet wheel 88 is rotatably supported about a vertical axis by a support shaft 92. The ratchet pawl 91 is engaged with the engaging teeth 88a by a spring (torsion coil spring) 93. It is urged in the direction to match.

The ratchet arm 90 is connected to the rear end of an interlocking rod 95 via a ball joint 94. The front end of the interlocking rod 95 is connected to the upper end of a swing arm 96 via a ball joint 97. Are linked. The lower end of the swing arm 96 is supported by a bracket 98 fixed to the support frame 32 side via a support shaft 99 so as to be rotatable around the left and right axes, and is swingable back and forth. One end of the connecting arm 100 is pivotally mounted on the upper side of the swing arm 96 so as to be rotatable around the left and right axes, and the other end of the connecting arm 100 is positioned at a position off the center of rotation of the rotating wheel 101. The rotating wheel 101 is fixed to a rotating shaft 104 rotatably supported around a left and right axis via a bearing 103 on a supporting member 102 fixed to the supporting frame 32 side.

On the other hand, as shown in FIG.
From an intermediate shaft 106 rotatably supported on the support frame 32 around the left and right axes, from sprockets 107, 108 fixed to the rotating shaft 104 and the intermediate shaft 106, and a chain 109 mounted on the sprockets 107, 108. Power can be transmitted through power transmission means 110, and the intermediate shaft 106 is connected to the drive shaft 40 by sprockets 111, 112 fixed to the intermediate shaft 106 and the drive shaft 40, and a chain mounted on the sprockets 111, 112. Power can be transmitted through power transmission means 114 including 113.

Therefore, the transplanter 2 is controlled by the tractor 1.
When the drive shaft 40 is rotated by the rotation of the ground contact wheel 5, power is transmitted from the drive shaft 40 to the rotating shaft 104 by the power transmission means 110 and 114, and the rotating wheel 1 is rotated.
01 rotates in the direction of arrow G in FIG.
The swing arm 96 reciprocates in the direction indicated by the arrow H in FIG. 10 (front-back direction), and the ratchet arm 90 is pushed and pulled via the interlocking rod 95 by the swing of the swing arm 96.

When the ratchet arm 90 is pulled, the ratchet wheel 88 is pushed by the ratchet pawl 91 in the direction indicated by the arrow E in FIG. 11 to rotate the drive shaft 72 in the same direction. The drive sprocket 68 rotates in the direction indicated by the arrow E in FIG. 8 by being driven to rotate in the direction indicated by arrow E, and conveys the pot 66 in the direction indicated by the arrow F. When the ratchet arm 90 is pressed, the ratchet claw 9 is pressed.
As 1 rotates around the support shaft 92 against the urging force of the spring 93, the ratchet wheel 88 escapes from the engaging teeth 88a of the ratchet wheel 88, so that the ratchet wheel 88 does not rotate and the pot 66 is not conveyed. Therefore, the pot 66 is intermittently conveyed, and the seedlings are usually put into the pot 66 when the pot 66 is stopped.

The ratchet wheel 88 or the drive shaft 72 is provided around the ratchet wheel 88 or the drive shaft 72.
A reverse rotation preventing means for preventing the rotation in the direction indicated by the arrow E is provided. The transplanting section 7 is provided with a planting means 116, and as shown in FIGS. 12 and 13, the planting means 116 includes a plurality (four in the illustrated example) of planted bodies 117 and the planted body 117. It mainly comprises a pair of left and right rotating supports 118L and 118R which support the 117 in a vertically movable manner.

As shown in FIG. 14, the planting body 117
The upper part is constituted by a cylinder 119, and the lower part is
0. The cylindrical body 119 is formed in a vertical opening shape, the upper side is expanded as it goes upward, the lower side is formed in a cylindrical shape, and the upper end side front part of the cylindrical body 119 is lower by one step from the upper edge. At the edge of the cutout portion 121, a seedling receiving portion 122 made of a plate material is provided so as to protrude forward, and a suspension arm 123 is fixed to the upper right side of the upper end of the cylindrical body 119 so as to protrude upward.

The opening / closing body 120 has a cup shape with an open upper end, and its outer shape is formed in a beak shape tapered downward, and the front and rear components 120A, 120
B, the front component 120A is fixed to the lower end of the cylinder 119, and the rear component 120B is
19, it is mounted and supported on the lower part on the rear surface side so as to be swingable about the left and right axes, and the swingable body 120B can be opened and closed by swinging about the horizontal axis 124 of the rear component 120B.

A spring hooking member 125 is fixed to the upper right side of the rear component 120B.
And the rear edge of the rear body 120B
A tension spring 126 is mounted so as to urge in a direction to close the spring. Further, as shown in FIG. 16, a contact member 127 is fixed to an upper left portion of the rear component 120B.

The rotary supports 118L and 118R are rotatably supported by members 128 forming the support frame 32 via bearings 129 so as to be rotatable around the left and right axes.
30R and the rotating shafts 130L, 130L.
There is a support arm 131 projecting from R in four directions orthogonal to the rotation shafts 130L, 130R. The left rotation support 118L is located lower than the right rotation support 118R.

An upper end of the suspension arm 123 is pivotally mounted on a right end of each support arm 131R of the right rotation support 118R via a support shaft 133 so as to be rotatable around the left and right axes.
A left-right support shaft 134 is fixed to the distal end side of each support arm 131 of the left rotary support 118L.
4, a lower left portion of the cylindrical body 119 is supported rotatably around the left and right axes.

On the other hand, as shown in FIG.
L, 130R, each rotating shaft 130
L, 130R and the sprockets 135, 136 fixed to the intermediate shaft 106, and the sprockets 135, 136
Transmission means 13 composed of a chain 137 mounted on the vehicle
Power can be transmitted through the power transmission line 8. Therefore, when the transplanter 2 is pulled by the tractor 1 and the intermediate shaft 106 rotates, the left and right rotation shafts 130L and 130R rotate via the power transmission means 138, and the left and right rotation supports 118L and 118R are moved to the positions shown in FIG. In the direction of arrow J,
Each planted body 117 is rotated and moved up and down in the direction of the arrow J while maintaining its posture, and the seedling S supplied from the seedling supply device 11 is formed by the groove forming means 4 at the upper end of the movement locus. Transfer to the bottom side of the groove.

A seedling falling from the pot 66 is located between the seedling receiving portion 122 when the planted body 117 is at the upper end position of the movement locus and the pot 66 at the rear end position of the seedling supply device 11. Seedling guide member 139 for guiding S to seedling receiving section 122
Is arranged. The seedling guide member 139 is a support 71
The lower part is formed in a cylindrical shape through which the seedling S is inserted vertically, and is formed in a gradually expanding shape from the cylindrical part upward.

In this configuration, when the seedling S falls from the pot 66, the planted body 117 is at the upper end position of the movement locus, and the dropped seedling S is the seedling guiding member 139.
And is placed on the seedling receiving section 122. At this time, the upper part of the block soil of the seedling S is located in the lower cylindrical part of the seedling guide member 139. The seedling S is restricted by the cylindrical portion of the guide member 139 even when the planted body 117 moves in the direction of the arrow J, so that the seedling S is planted by the movement of the planted body 117 in the direction of the arrow J. While moving relatively to the center of the appendage 117, it moves downward and escapes from the cylindrical portion of the seedling guide member 139, and slides down into the planting body 117.

The pot 66 is conveyed by one pitch before the next plant 117 reaches the upper end position of the movement locus, and when the next plant 117 reaches the upper end position of the movement locus. The seedling S is configured to fall from the pot 66. It should be noted that the pot 6 does not pass through the seedling guiding member 139.
It is conceivable that the plant is dropped directly from the plant 6 onto the plant 117, but in this case, there is a problem that it is difficult to take timing because the plant 117 is constantly moving.

On the other hand, each support shaft 134 has a fan-shaped cam 140.
As shown in FIG. 12, the cam 140 is rotated by the rotation of the rotation supporting member 118L so that the planting body 117 is fixed.
And the relative position of the support shaft 134 with respect to the axis of the support shaft 134 changes, and when the planting body 117 rises from the lower end position of the movement locus, the planting body 117 hits the contact member 127 and pushes it. The constituent body 120B is rocked rearward to open the opening / closing body 120, and the seedlings S are released and placed on the bottom of the groove formed by the groove forming means 4.

Further, the plant 117 is located below the locus.
It descends between the left and right soil covering means 6 and is located rearward (or rearward) between the earth covering means 6 at the lower end position of the locus. By means 6, the lower part of the planted body 117 is buried from the left and right sides, so that the seedling S is
When the soil is released to the bottom of the groove formed in the above, the soil is gathered from the left and right sides, and the seedling S is regulated or held by the soil gathered from the left and right sides, and is planted in a favorable state in a substantially upright state. Poor attachment (planting in an inclined state, etc.) is prevented.

The cam 140 is in contact with the contact member 127 from the lower end position of the locus to the middle of the ascent, and comes off the contact member 127 from the middle of the ascent to the upper end of the locus. The opening / closing body 120 is closed. The locus of movement of the plant 117 is overlapped with the soil covering means 6 in a side view, so that the front and rear length is reduced. In addition, it is conceivable that the plant is rushed into the soil after the soil is covered. However, by arranging the plant when the planted plant 117 descends to the lower end of the track, the plant is rushed into the soil after the soil is covered. The load received from the soil can be reduced as compared with those that do.

Behind the planting means 116, the scraper 1
41 are arranged. The scraper 141 is made of an elastic plate material such as rubber, and has a base portion attached to the attachment member 142 and a tip end portion provided with the rear component 12 of the opening / closing body 120.
An arc-shaped notch 143 substantially matching the outer shape of B in the circumferential direction is formed. The attachment member 142 is attached and fixed to a support member 144 fixed to the support frame 32 side.

As shown in FIGS. 1 and 2, the pressure-reducing means 8 is composed of a roller, and a pair of the pressure-reducing means 8 are arranged on both left and right sides of the seedling planting portion behind the scraper 141. These crushing means 8 are arranged in an expanded manner outward in the left-right direction as going upward, and roll on the field to bring the soil to the seedling planting portion,
Suppress the stock market. As shown in FIG. 17, the left and right pressure reduction means 8 are rotatably supported by the lower end of the support arm 145, and the upper end of the support arm 145 is supported by a bracket 146 which is mounted and supported on the support frame 32 so that the front and rear positions can be adjusted. 14
It is rotatably supported around the left and right axes via 7 and is swingable up and down.

Each of the left and right support arms 145 is provided with an urging means 148 for urging the pressure reducing means 8 downward. The urging means 148 includes a screw shaft 150 pivotally attached to a bracket 149 fixed to the upper end side of the support arm 145 so as to be rotatable around a left-right axis.
And a compression spring (coil spring) 151 for urging the rearward of the spring 50.

A pair of front and rear spring receiving members 152 and 153 are externally fitted in the middle of the screw shaft 150, the front spring receiving member 152 is fixed to the support frame 32, and the rear spring receiving member 153 is a screw. The spring 151 is movable in the axial direction of the shaft 150, and the spring 151 is interposed between the spring receiving members 152 and 153 in a compressed manner. Nuts 154 and 155 are screwed in front and behind the screw shaft 150.

Therefore, the support arm 145 is urged by the urging means 148 so as to swing downward around the support shaft 147, whereby the pressure-reducing means 8 is urged downward, that is, pressed against the ground. When the transplanter 2 moves up and down, the crushing means 8 has good followability to the ground. In addition, by screwing and retracting the rear nut 155, the urging force of the urging means 148 can be adjusted. On the other hand, the front nut 154 is used when the transplanter 2 is raised by the hydraulic device 29. The pressure-reducing means 8 functions as a stopper for restricting swinging of the support arm 145 downward, and when the transplanter 2 is raised by the hydraulic device 29 by screwing and retracting the front nut 154. Height position can be adjusted. The fertilizer applicator 12 supplies fertilizer to both the left and right sides of the seedling planting portion, and as shown in FIG. As shown in FIG. 18, it mainly comprises a fertilizer tank 157, a feeding unit 158, a guiding unit 159, and a driving unit 160.

The fertilizer tank 157 has a lower part formed in a funnel shape, a fertilizer inlet at the upper end, and a fertilizer outlet 6 at the lower end.
6a are respectively formed. In addition, fertilizer tank 15
A baffle plate 161 is provided on the lower inside side of 7.
The fertilizer flows down from between the baffle plate 161 and the inner surface of the tank to the fertilizer discharge port 157a. In addition, baffle plate 1
61 is swingably supported upward.

The feeding means 158 is provided in the left-right direction and is fixed to a mounting base 162 fixed to a support base 156, and a cylindrical member 163 is supported inside the cylindrical member 163 so as to be rotatable around a left-right axis. And the screw 164 that has been set. An intake port 163a communicating with the fertilizer discharge port 157a of the fertilizer tank 157 is formed at the upper center in the left-right direction of the cylindrical member 163, and a feed-out port 163b is formed at the lower left and right ends of the cylindrical member 163 in the left-right direction.

On the left and right sides of the screw 164, the spiral directions of the spiral blades are opposite to each other, and the rotation of the screw 164 causes the fertilizer in the fertilizer tank 157 to be fed from the left and right feed ports 163b. The driving means 160
Is constituted by a motor, and its output shaft 160a is connected to the screw 1 by a transmission means 165 such as a chain winding transmission mechanism.
64 are linked.

A pair of guide means 159 is provided on the left and right, and a funnel 166 for receiving the fertilizer fed from the feed port 163b.
And a hose 167 connected to the lower part of the funnel 166. The hose 167 is disposed to the rear part between the earthing plates 37 of the groove forming means 4, and is configured to supply the fed fertilizer to the left and right sides of the seedling planting portion.

The chemical spraying machine 13 supplies a soil disinfectant to the seedling planting portion. As shown in FIG. 3, the chemical sprayer 13 is provided on a support table 168 provided above the seedling placing section 9 in front of the work table 10. The medicine tank 16 is attached and fixed, as shown in FIG.
9, a feeding unit 170, a guiding unit 171, and a driving unit 172. The lower part of the medicine tank 169 is formed in a funnel shape, a medicine inlet is formed at an upper end, and a medicine outlet 169a is formed at a lower end.

The feeding means 170 is provided with a cylindrical member 174 fixed to a mounting base 173 fixed to a support base 168 in a lateral direction and rotatably supported inside the cylindrical member 174 around a longitudinal axis. And the screw 175 that has been set. The medicine tank 16 is provided in the upper rear part of the cylindrical member 174.
9 is formed with an intake port 174a communicating with the medicine discharge port 169a.
b is formed.

The screw 175 is operatively connected to an output shaft 172a of a driving means 172 constituted by a motor by a transmission means 176 such as a chain-winding transmission mechanism. The rotation of the screw 175 causes the soil disinfectant in the chemical tank 169 to rotate. Are fed from the feeding ports 174b on both the left and right sides.
A pair of guide means 171 is provided on the left and right sides, and the feeding port 174b is provided.
And a hose 178 connected to a lower portion of the funnel 177.

The hose 178 is provided to the rear of the groove forming means 4 between the soil discharge plates 37, and is configured to supply the fed soil disinfectant to the falling portion of the seedling. The driving means 160 and 172 are designed to switch between high-speed operation, low-speed operation, and stop by switching a switch provided in the control box.

As shown in FIG. 20, a water storage tank 180 is provided on the front bumper 179 of the tractor 1, and a hose 181 having one end connected to the water storage tank 180 is provided.
The other end of the hose is a fertilizer hose 167 and a chemical hose 17.
8 and the soil covering means 6, and is configured to irrigate between the fertilizer application / chemical spraying part and the soil covering means 6.

In the above construction, when the transplanter 2 is pulled by the tractor 1, the tilling device 3 rotatively plows the soil, and at the same time, the cultivated soil is moved to the left and right sides by the groove forming means 4 to form a groove at the center in the left and right direction. And an embankment on both the left and right sides. At this time, since the grounding wheel 5 is located on the lateral side of the groove forming means 4, it is possible to prevent the soil released from the tilling unit 15 of the tilling device 3 from scattering outside the tilling width.

Then, the fertilizer and the soil disinfectant are supplied to the groove formed by the groove forming means 4, and are sprinkled from the hose 181 to the planted portion (and the vicinity thereof) via a sprinkling nozzle or the like.
On the other hand, the seedlings S supplied from the seedling holder 9 to the seedling supply device 11 by the worker are supplied from the rear end of the seedling supply device 11 to the transplanting unit 7, and the seedlings S are produced by the planting means 116. It is placed at the center in the left-right direction of the bottom of the groove formed by the groove means 4, is covered with soil brought from both right and left sides by the soil covering means 6, and is held in a substantially upright state. At the same time, the planted portion is crushed and the seedling S is planted with its foliage protruding from the ground.

As described above, a series of planting operations such as tillage, groove formation, seedling supply, fertilization, soil disinfection, planting, soil covering, and suppression can be performed in one step. The sugarcane seedling to be used may be one obtained by cutting the entire stem obtained by cutting the tip (upper end) portion and root portion of a harvested long stem, and cutting it to an appropriate length. In this case, as the seedling supply device, a cutting device that cuts the sugarcane seedlings of all stems into appropriate lengths and drops the sugarcane seedlings into lower grooves is employed. Further, as the transplanting part, a method of providing a guide means for guiding the seedling cut to an appropriate length to the bottom of the groove formed by the groove forming means 4 or a method of directly dropping and supplying the seedling to the groove bottom without the guide means is used. Adopted.

The planting means may be constituted by another method, for example, a seedling transport elevator, a seedling planting holder or the like.

[0070]

According to the present invention, the rotary tilling device 3, the groove forming means 4, the ground contact wheel 5, and the transplanting portion 7 are arranged from the front to the rear, and the seedling holder 9 is provided above the tilling device 3. A work table 10 is provided above the groove forming means 4 and the grounding wheel 5, and a seedling supply device 11 for supplying seedlings to the transplanting section 7 is provided on the side of the worker boarding section 34 behind the seedling placing section 9. Since it is equipped, a series of planting operations such as tilling, grooving, supplying seedlings to the transplanting part, and planting can be performed in one process, and the efficiency of planting work is planned,
In addition, a seedling holder 9 is provided above the tillage device 3, and a work table 10 is provided above the groove forming means 4 and the grounding wheel 5.
The work table 10, the worker boarding section 34, and the seedling supply device 11 are well supported, and the space is effectively used.

Further, the worker boarding section 34 behind the seedling placing section 9 is provided.
Since the seedling supply device 11 for supplying the seedlings to the transplanting unit 7 is provided on the side of the plant, the seedling supply from the seedling storage unit 9 to the seedling supply device 11 can be performed favorably, and the workability is good.

[Brief description of the drawings]

FIG. 1 is an overall side view of a transplanter.

FIG. 2 is a schematic plan view of the transplanter.

FIG. 3 is a rear view of a seedling holder.

FIG. 4 is a partial cross-sectional side view showing the upper structure of the grounding wheel.

FIG. 5 is a schematic diagram showing a power transmission system.

FIG. 6 is a front sectional view of the soil covering means.

FIG. 7 is a plan sectional view of the soil covering means.

FIG. 8 is a plan view of the seedling supply device.

FIG. 9 is a sectional view taken along the line KK of FIG. 8;

FIG. 10 is a side view of a driving means of the seedling supply device.

FIG. 11 is a plan view of a part of the driving means of the seedling supply device.

FIG. 12 is a side view of the planting means.

FIG. 13 is a rear view of the planting means.

FIG. 14 is a sectional view of an implant.

FIG. 15 is a plan view of an implant.

FIG. 16 is a cross-sectional plan view of the plant.

FIG. 17 is an urging means diagram for urging the pressure suppressing means.

FIG. 18 is a rear sectional view of the fertilizer applicator.

FIG. 19 is a rear sectional view of the medicine sprayer.

FIG. 20 is an overall side view of a state where the tractor is mounted.

[Explanation of symbols]

 Reference Signs List 3 Rotary tillage device 4 Groove forming means 5 Grounding wheel 7 Transplantation part 9 Seedling holder part 10 Workbench 11 Seedling supply device 34 Worker boarding part

Claims (5)

[Claims] 1. A rotary tilling device (3), a groove forming means (4) and a contact wheel (5), and a transplanting part (7) from the front to the rear.
And a seedling holder (9) is provided above the tillage device (3), and the workbench (1) is provided above the groove forming means (4) and the contact wheel (5).
0) is provided, and a seedling supply device (11) for supplying seedlings to the transplanting part (7) is provided on the side of the worker boarding part (34) behind the seedling placing part (9). Tractor-traction type transplanter. 2. The transplanting part (7) includes a planting body (117) that moves up and down to transfer the seedlings supplied from the seedling supply device (11) to the bottom side of the groove formed by the groove forming means (4). The tractor-traction-type transplanter according to claim 1, further comprising a scraper (141) for removing soil adhered to the implant (117) when the implant (117) is lifted. The seedling supply device (11) holds a large number of seedling holders (66) capable of holding the seedlings and releasing the seedlings to the transplanting part (7).
And a chain (7) mounted on the seedling holder (66) between a pair of front and rear sprockets (68) and (69).
The tractor-retractable transplanter according to claim 1 or 2, wherein the tractor-retractable transplanter is fixed at a predetermined interval to 0). 4. A water storage tank (1) is provided in front of the tractor (1).
80), wherein the water in the water storage tank (180) is irrigated to the portion where the seedlings are planted.
3. The tractor-traction-type transplanter according to any one of 3. 5. The cultivating means (4) according to claim 1, wherein the lower end of the grooving means (4) is located above the lower end of the tilling part (15) of the tilling device (3). Tractor-traction type transplanter.