JP2006141366A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter which has a pair of right and left press wheels rotating to press both right and left sides of the seedling planting position, which right and left press wheels are inclined upward toward the opposite direction of a rotation axis to go upward to have an opposite interval of the right and left press wheels, which is inclined so as to be increased upward toward the upper part, and which is equipped with a pair of right and left planting bodies for planting seedlings and two units of a pair of press wheels in which one unit corresponds to one pair of planting bodies, wherein the press wheels can be enlarged their diameters or spaces between planting rows can be narrowed by bringing two pairs of press wheels close each other. <P>SOLUTION: A driving gear 97 for driving one of the adjoining press wheels 28 at laterally center side of two pairs of press wheels 28 is shifted to one of upper or lower side relative to the rotation axis X of the press wheel 28, and a driving gear 97 driving the other press wheel 28 is shifted to the other upper or lower side relative to the rotation axis X of the press wheel 28. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a transplanter for planting seedlings in a field.

Conventionally, as a transplanter, there is a transplanter provided with a transplanter at the rear part of the traveling body and planting seedlings in a farm field while traveling, and the transplanter is supported by being openable and closable and being lifted and closed. A seedling is supplied on the top dead center side in the state, and a planting hole is formed in the heel by forming a planting hole in the cocoon by opening and entering a cocoon on the bottom dead center side, and a seedling There is one provided with a pair of left and right pressure-reducing wheels that roll on both the left and right sides of the planting position and crush the soil on both the left and right sides of the seedlings released to the planting position (see Patent Document 1).
JP 2004-194553 A

In the conventional transplanter, when rolling in the field, soil adheres to the outer peripheral surface of the pressure reducing wheel and the attached soil is caught by a scraper that scrapes the soil on the outer peripheral surface of the pressure reducing wheel. In some cases, the pressure wheel stops rotating and the pressure wheel is dragged over the field.
Therefore, as shown in FIG. 15, a drive panel 121 is provided on a surface opposite to the opposite side of the left and right pressure-reducing wheels 120 so as to be integrally rotatable, and the rotation axis X of the pressure-reducing wheel 120 is centered on the drive panel 121. The engagement holes 122 arranged at intervals in the circumferential direction are provided over the entire circumference, and a drive gear 123 that meshes with the engagement holes 122 is provided, and the drive gear 123 travels. A pressure-reducing device is considered in which the pressure-reducing wheel 120 is forcibly driven by being rotationally driven by a body engine.

The pressure-reducing device shown in FIG. 15 is a pressure-reducing device provided in a two-row planting transplanter in which a planting body for planting seedlings N in a field is provided. Two sets of left and right pressure-reducing wheels 120 corresponding to the planted body are provided, and the pair of left and right pressure-reducing wheels 120 of each set is opposed to the left and right pressure-reducing wheels 120 as an inclined shape that transitions upward as the rotation axis X moves in the opposite direction. It is configured to be inclined so that the interval gradually increases as it goes upward, and the rotational axis Z of the drive gear 123 and the rotational axis X of the pressure reducing wheel 120 are configured to be orthogonal to each other.
In the pressure-reducing device shown in FIG. 15, the drive gear 123 is worn by mud or dirt or dirt dust, or the drive gear 123 is laterally outward from the upper end on the opposite side of the pressure-reducing wheel 120. There is a problem that the amount of protrusion is relatively large.

Further, the larger the diameter of the pressure-reducing wheel 120, the less the sinking and the less the earth pushing. However, in the pressure-reducing device shown in FIG. If the drive gear 123 of the adjacent pressure-reducing wheel 120 becomes a neck and the planting strip space W is narrowed, there is a problem that the diameter of the pressure-reducing wheel 120 cannot be increased.
In addition, there is a problem that when the pressure wheel 120 is locked due to rocks or the like being rocked, the drive system of the pressure wheel 120 is overloaded.
Therefore, an object of the present invention is to solve the above problems.

The technical means of the present invention for solving this technical problem is a pair of left and right sides that roll down the left and right sides of the seedling planting position in the field and suppress the soil on both the left and right sides of the seedling supplied to the planting position. Implant with a pressure-reducing wheel, and the right and left pressure-reducing wheels are inclined so that the rotational axis of the left and right pressure-reducing wheels gradually increases as the opposing distance between the left and right pressure-reducing wheels increases upward as the rotational axis of the right-and-left rotation wheel moves upward. In the machine
Engagement holes arranged at intervals in the circumferential direction around the rotation axis are provided on the surface opposite to the opposite side of each of the left and right pressure-reducing wheels, and mesh with these engagement holes to rotate. A drive gear for rotationally driving the pressure-reducing wheel is provided, and this drive gear is arranged so as to be displaced on one side of the upper and lower sides of the rotational axis of the pressure-reducing wheel.

In addition, a plurality of planting bodies for planting seedlings are provided in the left-right direction, and a pair of pressure-reducing wheels are provided in the left-right direction corresponding to the plurality of planting bodies, and two sets of pressure-reducing adjacent in the left-right direction are provided. Of the wheels, the drive gear that drives one of the pressure-reducing wheels adjacent on the center side in the left-right direction is shifted to the upper or lower side with respect to the rotational axis of the pressure-reducing wheel, and the drive gear that drives the other pressure-reducing wheel is the pressure-reducing wheel. It is preferable that the position is shifted to the other side of the upper and lower sides with respect to the rotation axis.
According to this configuration, two sets of pressure-reducing wheels adjacent in the left-right direction can be made to approach in the left-right direction to narrow the space between the planting strips, or the diameter of the pressure-reducing wheel can be increased.

In addition, a drive panel in which an engagement hole is formed is provided so as to be able to rotate integrally with each pressure-reducing wheel and move in the direction of the rotation axis, and when an overload is applied to the pressure-reducing wheel, the drive panel becomes the rotation shaft of the pressure-reducing wheel. The drive board is preferably urged by the urging member in a direction in which the engagement hole engages with the drive gear so as to move in the center direction and come out of the drive gear.
According to this configuration, when a stone or the like bites into the pressure wheel, the drive panel moves in the direction of the rotation axis of the pressure wheel against the urging force of the urging member and comes off the drive gear. It is possible to prevent the drive system from being overloaded.

The drive gear is driven to rotate about the front and rear axes, and the engagement hole is formed to be inclined with respect to the radial direction of the pressure reducing wheel so as to move forward in the rotational direction of the pressure reducing wheel as it goes outward in the radial direction. It is good to do.
With this configuration, even if the drive gear is arranged so as to be shifted to one side of the upper and lower sides with respect to the rotational axis of the pressure reducing wheel, the drive gear smoothly meshes with the drive panel.

  According to the present invention, when the drive gear is disposed so as to be displaced above the rotation shaft center of the pressure reducing wheel, the drive gear is separated from the ground, so that it is possible to prevent mud or the like from being worn by dirt and dust. In addition, since the pair of left and right pressure-reducing wheels are inclined so that the facing distance gradually increases, the drive gear is shifted to the lower side of the rotation axis of the pressure-reducing wheel. When arranged, the amount of protrusion of the drive gear from the upper end on the opposite side of the pressure-reducing wheel to the outside in the left-right direction can be reduced, and the pressure-reducing wheel and the drive gear can be configured compactly (narrow width on the left and right).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3, reference numeral 1 denotes a transplanting machine for planting seedlings of vegetables such as onions in a field. In the present embodiment, a traveling body 1 </ b> A is provided at the front, and a transplanting device 1 </ b> B and a handle 4 are provided at the rear. The walking type transplanter 1 is illustrated.
The traveling body 1A includes an engine (power source) E, a transmission case M, a pair of left and right front wheels (wheels) 2, and a pair of left and right rear wheels (wheels) 3. K is provided so as to protrude forward, the engine E is mounted on the gantry K, the front end side of the transmission case M is connected to the rear part of the engine E, and the vehicle body B is supported by the engine E, the transmission case M, the gantry K, etc. Is the main component.

A cylindrical front wheel support shaft 18 arranged in the left-right direction is supported on the front lower portion of the gantry K so as to be rotatable around a shaft center in the left-right direction via a bearing or the like. Each of the mounting shafts 19 is inserted in such a manner that the mounting shaft 19 can rotate integrally and the position of the mounting shaft 19 can be adjusted in the left-right direction. The front end side of the support arm 20 is fixed, and the front wheels 2 are attached to the rear end sides of the left and right front wheel support arms 20 so as to be rotatable around the left and right axes, respectively.
On the left and right sides of the rear part of the transmission case M, rear wheel support shafts 21 having left and right axial centers are provided so as to project outward in the left and right directions. The front end side of the traveling transmission case 22 that is arranged in an inclined shape that moves downward as it goes rearward is supported so as to be rotatable around the axis in the left-right direction. The wheel 3 is attached so as to be rotatable around the left and right axis.

The power from the engine E output to the left and right sides from the transmission case M is transmitted to the rear wheel 3 via the transmission shaft in the rear wheel support shaft 21 and the power transmission mechanism in the traveling transmission case 22, and the rear wheel 3 Driven by rotation, the traveling body 1A travels.
Further, the front wheel support shaft 18 and the left and right rear wheel support shafts 21 are interlocked and connected by a pair of left and right interlocking rods 23. When the front wheel support shaft 18 rotates about the axis, the left and right front wheel support arms 20 are moved. The left and right front wheels 2 swing up and down around the axis of the front wheel support shaft 18 to move up and down relative to the vehicle body B, and the left and right interlocking rods 23 are pushed and pulled, so that the left and right traveling transmission cases 22 are rear wheel support shafts. The left and right rear wheels 3 are moved up and down relative to the vehicle body B by swinging up and down around the axis 21.

Therefore, the pair of left and right front and rear wheels 2 and 3 can be raised and lowered simultaneously with respect to the vehicle body B.
The platform K is provided with an elevating cylinder 24 such as a hydraulic cylinder. The piston rod of the elevating cylinder 24 is linked to the front wheel support shaft 18 via a bracket so that the piston rod of the elevating cylinder 24 can be extended. By retracting, the front wheel support shaft 18 is configured to rotate around the shaft center, and the front and rear wheels 2 and 3 are moved up and down relatively with respect to the vehicle body B by the expansion and contraction of the lift cylinder 24. The vehicle body B and the transplant device 1B of the traveling body 1A can be moved up and down (the height can be adjusted) by moving up and down 2 and 3.

As shown in FIGS. 1 to 3, the transplant device 1 </ b> B includes a frame F fixed to the vehicle body B of the traveling body 1 </ b> A, a planting body 26 for planting the seedling N in a field, and a seedling N on the planting body 26. A seedling supply device 27 for supplying the soil, and a soil covering and pressure suppressing device 29 including a pressure reducing wheel 28 for pressing and suppressing the soil on the side of the seedling N planted in the field and pressing the soil against the planting to cover the soil. It has.
The frame F of the transplanting device 1B is mainly composed of a power transmission case 30, a planting transmission case 46, a first frame 32, a second frame 33, and a third frame 34.
The lower part of the power transmission case 30 is attached and fixed to the rear part of the transmission case M of the traveling body 1A and is provided so as to protrude upward from the transmission case M. A cylindrical body 35 is provided on the upper rear surface side of the power transmission case 30. Is fixed in a rearward projecting manner, and a planting transmission case 46 is connected to the rear end side of the cylindrical body 35.

The first frame 32 is composed of a pair of left and right pipe members formed in a straight line shape in the front-rear direction from the front part to the middle part and shifted upward as the rear part goes rearward, and the front end of the first frame 32 The side is connected to the lower part of the rear side of the planting transmission case 46, and the handle 4 is connected to the rear end side of the first frame 32.
The second frame 33 is formed in a straight line in the front-rear direction and is disposed on the lower side of the first frame 32, and the rear side of the second frame 33 is located in the middle in the front-rear direction of the first frame 32 via the connection frame 36. It is connected.

The rear part of the third frame 34 is fixed to the front part of the second frame 33, and the front part of the third frame 34 is connected to the lower part of the power transmission case 30.
The body of the transplanter 1 is composed of the frame F of the transplanter 1B and the vehicle body B of the traveling body 1A.
An output shaft 37 through which power from the engine E is transmitted via a power transmission mechanism in the mission case M is provided at the rear lower portion of the transmission case M. A transmission mechanism and a cylinder in the power transmission case are provided from the output shaft 37. Power is input to a power transmission mechanism in the planting transmission case 46 via a transmission shaft or the like in the body 35.

The planting body 26 is configured to be openable in the front-rear direction with an upper end opening shape, and is supported by the frame F so as to be movable up and down. N is supplied in a fall state, descends with the seedling N stored inside, enters the field (畝) and opens back and forth to form a planting hole in the field and release the seedling N into the planting hole ( The seedlings N are planted by supplying) and closed in the ascending process up to the top dead center.
Moreover, in this Embodiment, the transplanter 1 of 2 row planting is illustrated, Therefore, the planting body 26 is provided with a pair of right and left.

Further, the pair of right and left planted bodies 26 move up and down in an inclined direction that moves inward in the left-right direction as they go downward so that they move away from each other and approach each other when they move downward.
As shown in FIGS. 3 to 6, the seedling supply device 27 is disposed on the rear upper side of the transplanter 1 and mounted on the first frame 32 and the seedling mounting base 5. A seedling picking device 7 for picking out the seedling N from the seedling tray T, a seedling transporting device 6 for transporting the seedling N picked up by the seedling picking device 7 above the planting body 26, and a planting body by the seedling transporting device 6 26 has a seedling posture changing device 38 for changing the posture of the seedling N in a horizontal posture sent to the upper side to a vertical posture and supplying the seedling posture to the planting body 26, and each device has power output from the planting transmission case 46. Driven by.

The seedling tray T is made of resin, has flexibility, and can be bent elastically, and a large number of pot portions P are formed in the shape of a base in the vertical and horizontal directions. Sowing seedlings (pot seedlings) N such as vegetables (onions).
In the present embodiment, the shape of the bed soil portion Na of the seedling N is formed in a truncated cone shape that decreases in diameter as it goes to the bottom (the wharf whose sectional area decreases as it goes to the bottom). It may be formed in the shape of a quadrangular pyramid).
The seedling tray T is set from above on the seedling placing stand 5 so that the opening of the pot portion P faces forward (so that the foliage portion Nb of the seedling N faces forward).

The seedling take-out device 7 is arranged above the seedling transfer device 6, and receives the seedling N 8 that extrudes the seedling N from the pot portion P, and the seedling N that has been pushed out by the extrusion trough 8, and passes to the seedling transfer device 6. And a seedling delivery mechanism 9 for delivery.
A number of extrusion baskets 8 are provided corresponding to the seedlings N in a horizontal row (a horizontal row) of the seedling tray T, and are provided on the rear side of the seedling stage 5 so as to be movable in the front-rear direction. Are inserted from the bottom (rear) thereof, push the seedlings N in a horizontal row forward, and then retreat.
In addition, after the seedling N is pushed out, the seedling tray T is vertically fed by a horizontal row of the seedling N, and the extrusion basket 8 is used until the seedling N of the seedling transfer device 6 is eliminated (or until most of the seedling N is eliminated). stand by.

In addition, the seedling tray T is curved on the lower side of the seedling mount 5 and is taken out rearward.
The horizontal soil row (root pot) Na of the seedlings N pushed out from the pot part P is pushed into the seedling receiving groove 10 a of the seedling receiving arm 10 of the seedling delivery mechanism 9.
The seedling receiving arm 10 is linked to a crank 11 that is rotationally driven by a power transmission mechanism in the planting transmission case 46 via an interlocking member 13, and the seedling receiving arm indicated by a solid line in FIG. The position can be freely changed to the position and the seedling passing position indicated by the phantom line, and the seedling N pushed out from the pot portion P is received at the seedling receiving position, and then the seedling N is reversed in the front-back direction. When turning downward and reaching the seedling transfer position, the seedling receiving groove 10a passes through the position of the jumping member 12 with the floor soil portion Na of the seedling N first, and thereby the seedling N is removed from the seedling receiving groove 10a. The pushing-out member 12 is pushed out so that the seedling N can be removed from the seedling receiving groove 10a and simultaneously rotated downward (in the direction of arrow a1) to drop the seedling N onto the lower seedling transfer device 6. Yes.

As shown in FIGS. 3 to 5, the seedling transfer device 6 is disposed in front of the seedling mount 5 and on the lower side, is provided in a pair on the left and right sides corresponding to the left and right planting bodies 26, and The first frame 32 is attached to and supported by the first frame 32, with the center in the left-right direction as a boundary.
Each of the left and right seedling transfer devices 6 includes left and right pulleys 15 that are rotatable around an axial center in the front-rear direction, and endless seedling transfer belts 16 that are hung on the left and right pulleys 15. The pulley 15 is driven by a rotary shaft 39 that is rotated by power transmitted from a power transmission mechanism in the planting transmission case 46 via a bevel gear transmission mechanism or the like, and the seedling transfer belt 16 is driven by the rotational drive of the pulley 15. Is configured such that its upper side is moved from the center in the left-right direction of the transplant device 1B toward the outer side in the left-right direction.

The seedling N is placed on the seedling transfer belt 16 so that the stems and leaves Nb thereof are lined up in the left-right direction in a lateral orientation facing backward, and the seedling transfer belt 16 causes the left-right direction (substantially orthogonal to the depth direction of the floor soil portion). In the horizontal direction), and falls downward at the end portion (outer end portion in the left-right direction) of each seedling transfer belt 16.
Further, a plurality of positioning protrusions 40 arranged in the belt width direction (front-rear direction) are provided in the seedling transfer direction C on the front end side (the placement side of the bed soil Na of the seedling N) on the surface of the seedling transfer belt 16. The seedlings N are positioned one by one between the positioning protrusions 40 that are provided at equal intervals and are adjacent in the seedling transfer direction C.

The left and right planting bodies 26 are provided at the top dead center side of the moving range, and are located below the terminal end side of the seedling transfer belt 16 on the same side in the left-right direction.
A pair of right and left seedling posture changing devices 38 is provided corresponding to the planted body 26, and the right and left posture changing devices 38 are provided on the terminal side of the seedling transfer belt 16 on the same side in the left and right direction.
This seedling posture changing device 38 sandwiches the seedling N, a seedling receiving means 41 for receiving the seedling N falling in a lateral posture from the end of the seedling transfer belt 16, a pressing means 42 for pushing down the floor soil portion Nb of the seedling N, A pair of left and right vertical feed rollers 43 are provided to feed downward at high speed.

As shown in FIGS. 6 to 10, the seedling receiving means 41 is disposed on the outer side in the left-right direction on the front side of the end portion of the seedling transfer belt 16 and receives the floor soil portion Na of the seedling N. And a leaf and leaf receiving portion 47 that is disposed on the rear side of the floor soil receiving portion 45 and receives the stem and leaf portion Nb of the seedling N and a lower leaf receiver 48 that receives the lower leaf Nc of the seedling N.
The floor soil receiving portion 45 includes a pair of left and right receiving members 49 and 50 that receive the floor soil portion Na from both left and right sides (sides of the seedling transfer direction C) in a sandwiched manner.
The left and right receiving members 49, 50 are formed of a plate material, and the receiving member 49 on the inner side in the left-right direction is arranged directly below the end portion of the seedling transfer belt 16 so that the plate surface faces the left-right direction. It is fixed to a support wall 51 disposed on the front side of the transfer belt 16 and fixed to the planting transmission case 46 side (this receiving member 49 is referred to as a fixed receiving member).

The fixed receiving member 49 is formed in an inclined shape so that the upper part moves inward in the left-right direction as the upper part goes upward, and the lower part is formed along the vertical direction. In order to bring the member 49 close to the seedling transfer belt 16, a groove 52 for avoiding interference with the positioning protrusion 40 of the seedling transfer belt 16 is formed.
The receiving member 50 on the outer side in the left-right direction is disposed at a predetermined interval on the outer side in the left-right direction of the end portion of the seedling transfer belt 16, and the upper end side of the receiving member 50 is a shaft in the front-rear direction fixed to the support wall 51. It is supported so as to be pivotable around the center and is capable of swinging left and right (this receiving member 50 is referred to as a movable receiving member).

The movable receiving member 50 is disposed on the lower side so as to face the fixed receiving member 49 in the left-right direction, and is fixed around the support shaft 53 by an urging means such as a torsion coil spring (not shown) fitted to the support shaft 53. While being biased so as to be close to the receiving member 49, the rotation around the support shaft 53 is restricted by a stopper 54 fixed to the end of the support shaft 53.
Further, as shown in FIG. 7, the movable receiving member 50 is formed so as to have an inclined shape in which the lower side of the movable receiving member 50 moves inward in the left-right direction as it goes downward when the rotation is restricted by the stopper 54. The opposed spacing between the fixed receiving member 49 and the movable receiving member 50 is configured to be gradually narrower as it goes downward, and to be narrower than the width of the floor soil portion Na of the seedling N in the middle in the vertical direction.

Therefore, the bed soil portion Na of the seedling N is guided from the positioning projection 40 at the end of the seedling transfer belt 16 and falls from above between the fixed receiving member 49 and the movable receiving member 50, and the fixed receiving member 49 The movable receiving member 50 is held so as to be sandwiched between the fixed receiving member 49 and the movable receiving member 50 in the middle portion between the movable receiving member 50 and the movable receiving member 50.
Further, in this embodiment, the floor soil receiving portion 45 can be opened and closed by the movable receiving member 50 swinging in the left-right direction, and the movable receiving member 50 resists the biasing force of the spring. By swinging outward in the left-right direction, the floor soil receiving portion 45 is opened, and the floor soil portion Na is detached from the floor soil receiving portion 45 and falls downward.

The foliage receiving part 47 is formed of a plate material, and is disposed below the terminal part of the seedling transfer belt 16 (downward from the center 15 of the pulley 15 of the seedling transfer belt 16).
Further, the foliage receiving portion 47 has a bottom wall 47a and left and right side walls 47b, and is formed to be open upward. The bottom wall 47a is formed so that the left and right widths become narrower from the rear end toward the front. 7, on the front end side (floor soil receiving portion 45 side), as shown in FIG. 7, the cross-sectional shape of the foliage receiving portion 47 is formed in a V-shape projecting to the lower surface side, and the foliage portion of the seedling It has a function of bringing Nb to the central portion in the left-right direction of the foliage receiving portion 47.

In addition, the bottom wall 47a of the foliage receiving portion 47 is formed in an inclined shape that moves downward as it goes forward from the rear end (as it goes from the front end side of the foliage portion Nb to the stock side), and at the front end side, The front end portion is formed in a curved shape that protrudes downward and protrudes forward and upward.
The foliage receiving part 47 is supported by the support wall 51 via a support member.
A pair of left and right lower leaf receptacles 48 are provided. As shown in FIG. 10, the lower leaf receptacles 48 extend forward from the left and right sides of the front end portion of the stem and leaf receptacle portion 47 and are integrally formed with the leaf and leaf receptacle portion 47 (or It is formed as a separate body and fixed to the foliage receiving portion 47).

The lower leaf receptacle 48 may be only on the left or right side.
The pair of left and right vertical feed rollers 43 are disposed below the front end side of the foliage receiving portion 47 and above the planting body 26 located at the top dead center position and below the movable receiving member 50 and the rear side of the fixed receiving member 49. And has an axial center in the front-rear direction, and the peripheral surface is in contact in the left-right direction.
The left and right vertical feed rollers 43 are fixed to the rear part of the rotary shaft 55 having a longitudinal axis, and the front part of the rotary shaft 55 is a bearing provided on a support frame 56 fixed to the frame F side. The portion 57 is supported so as to be rotatable around the axis.

The bearing portion 57 is located on the front side of the fixed receiving member 49 and the movable receiving member 50.
A spur gear 58 disposed on the front side of the bearing portion 57 is fixed to each rotary shaft 55 that supports the left and right vertical feed rollers 43. The spur gears 58 are meshed with each other, and one rotary shaft 55 is planted. By rotating and driving around the front and rear axes by the power output from the attached transmission case 46, the left and right sides are moved so that the peripheral surface moves downward on the contact side of the vertical feed roller 43 as shown by arrows in FIG. The vertical feed rollers 43 rotate in opposite directions.
The left and right vertical feed rollers 43 are configured to be inclined such that a line segment H that passes through these axes and is orthogonal to the axis G moves inward in the left-right direction. The vertical feed roller 43 is attached corresponding to the tilting and raising / lowering direction of the planting body 26 (the tilting and raising / lowering direction of the planting body 26 and the line segment H passing through the axis G of the left and right vertical feeding rollers 43 are substantially orthogonal. Should be configured to do this).

The front end portion of the foliage receiving portion 47 is positioned on the center side in the direction of the rotational axis G of the vertical feed roller 43, and the central portion in the left-right direction of the foliage receiving portion 47 is above the left and right vertical feed rollers 43. The front end of the bottom wall 47a of the foliage receiving portion 47 enters below the tangent line J that is in contact with the upper ends of both the left and right vertical feed rollers 43. Thus, the foliage receiving portion 47 is brought close to the vertical feed roller 43 to reduce the gap with the vertical feed roller 43.
Further, as shown in FIG. 10, the lower leaf receptacle 48 extends to the front end of the vertical feed roller 43, and is positioned above the vertical feed roller 43 so as to cover the vertical feed roller 43.

Further, the lower end portions of the fixed receiving member 49 and the movable receiving member 50 are configured to be positioned below a tangent line J that contacts both upper end sides of the left and right vertical feed rollers 43.
The push-down means 42 is provided on the side of the planting transmission case 46, and supports a feed claw 59 that pushes down the floor soil portion Na and feeds it downward from the floor soil receiving portion 45, and the feed claw 59. And a swing arm 60.
The front end portion (base side) of the swing arm 60 is rotatable about the left and right axis about the end of the swing support shaft 61 disposed in the left and right direction in front of the lower portion of the planting transmission case 46. The swing fulcrum shaft 61 is supported by a bracket 62 fixed to the planting transmission case 46.

The upper end side of the delivery claw 59 is attached and fixed to the rear end portion (front end side) of the swing arm 60, the lower end surface is a contact surface 63 that contacts the floor soil Na, and the lower end side. The lower side is divided into a plurality in the front-rear direction by a plurality of grooves 64 formed upward from the top.
One end side of the link 66 is pivotally connected to the middle part of the swing arm 60 in the front-rear direction via a pivot shaft 65 so as to be rotatable about the axis in the left-right direction. The moving member 67 is pivotally connected to one end side of the moving member 67 via a pivot 68.
The other end side of the rotation member 67 is connected to a drive shaft 69 having a left and right axial center provided on an upper side surface on the front side of the planting transmission case 46, and rotates about the drive shaft 69. Then, when the rotation member 67 is rotated by the drive shaft 69, the swing arm 60 swings up and down around the swing fulcrum shaft 61 on the front end side. Moves up and down once.

The feeding claw 59 is located above the seed receiving transfer belt 16 above the fixed receiving member 49 and the movable receiving member 50 of the floor soil receiving portion 45 at the top dead center. 49 and the movable receiving member 50 are lowered so that the lower side reaches between the vertical feed roller 43 and the bearing portion 57, and the lower end contact surface 63 is fixed to the fixed receiving member 49 and the movable receiving member during the lowering. The floor soil Na is held in contact with the member 50 and pressed down.
The floor soil portion Na is moved downward by pressing the movable receiving member 50 to rotate the movable receiving member 50 around the support shaft 53 (while pushing the movable receiving member 50 open), and the floor soil portion Na is moved downward. When moved, the floor soil portion Na is detached from the floor soil receiving portion 45 and the stock side of the foliage portion Nb is bitten between the vertical feed rollers 43.

  As shown in FIG. 9 (a), the contact surface 63 of the delivery claw 59 pushes down the bed soil portion Na to bite the stock base side of the foliage portion Nb between the vertical feed rollers 43. In a state where the floor soil portion Na is in surface contact with the floor soil portion Na so as to push down the floor soil portion Na, it is formed to have an inclined shape that transitions upward as it goes backward. (The contact surface 63 of the delivery claw 59 is located upward as it goes rearward with respect to the rotational axis G of the vertical feed roller 43 in a state where the contact surface 63 is in surface contact with the floor soil portion Na so as to push down the floor soil portion Na. An inclination angle O to be transferred is given).

The delivery claw 59 is further lowered from the position shown in FIG. 9 to reach the bottom dead center position.
Further, as shown in FIG. 9B, the rear end of the contact surface 63 of the feeding claw 59 when the bed soil portion Na is pushed down and the stock side of the foliage portion Nb is bitten between the vertical feed rollers 43. The interval Q between the (vertical feed roller 43 side end) and the front end of the vertical feed roller 43 (end on the delivery claw 59 side) is orthogonal to the depth S direction of the bottom of the bed soil Na of the seedling N. Width in the direction to be narrowed (if the frustoconical floor soil portion Na, the diameter of the bottom, and if the frustoquad pyramidal floor soil portion Na, the distance between the opposite sides of the bottom) U It is configured.

For example, the space between the rear end of the contact surface 63 of the feed claw 59 and the front end of the vertical feed roller 43 when the floor soil portion Na is pushed down and the foliage portion Nb is bitten between the vertical feed rollers 43 is wide. In some cases, the foliage portion Nb is not bitten between the vertical feed rollers 43 but falls between the feed claw 59 and the vertical feed roller 43, but by configuring as described above, the foliage portion Nb Can be reliably pushed between the vertical feed rollers 43.
Although the width U of the floor soil portion Na is 16 mm, the interval Q between the feeding claw 59 and the vertical feed roller 43 is made narrower than the width U of the floor soil portion Na. It is better to be as narrow as possible. (For example, it is good to set it as 2-3 mm (preferably 2 mm)).

Furthermore, the width (front-rear width) R in the direction corresponding to the depth S direction of the floor soil portion Na of the portion of the delivery claw 59 that contacts the floor soil portion Na is larger than the depth S of the floor soil portion Na. As a result, the seedling N can be reliably sent out even if the seedling N is sent out and displaced forward and backward with respect to the claw 59.
In the seedling posture changing device 38 having the above-described configuration, the seedling N that has fallen in the lateral posture from the end of the seedling transfer belt 16 is received by the seedling receiving means 41 and temporarily held until it is pushed down by the pressing means 42.

At this time, the seedling N is in a position indicated by a in FIG. 8, and the seedling N is held by the seedling receiving means 41 in an inclined posture that moves upward as it goes from the floor soil receiving portion 45 to the foliage receiving portion 47.
Further, in this standby state, the lower leaf Nc of the seedling is received by the lower leaf receiver 48, so that the lower leaf Nc can be prevented from being bitten by the vertical feed roller 43.
Next, when the delivery claw 59 descends from the top dead center position, the delivery claw 59 comes into contact with the floor soil portion Na from the front end side, and the floor soil portion Na is in the standby state described above. The seedling side of the stem and leaf portion Nb is bitten between the vertical feed rollers 43 by further pressing down so that the seedling N is generated from the bottom.

The seedling N swings so that the floor soil portion Na comes close to the vertical feed roller 43 when the floor soil portion Na is pushed down with the stem and leaf portion Nb being held by the leaf and leaf receiving portion 47, and the seedling portion Nb The stem and leaf portion Nb is sandwiched between the pair of vertical feed rollers 43 that rotate reversely to each other at a high speed when the stock side is held between the vertical feed rollers 43 and fed downward at a high speed.
By combining these operations, the seedling N moves downward from the lateral posture supported by the seedling receiving means 41 as shown by reference numerals b, c, and d in FIG. The posture is changed to a vertical posture in which the portion Na is on the lower side.

The arc-shaped portion 70 on the front end side of the foliage receiving portion 47 serves as a guide for effectively changing the posture of the seedling N to the vertical posture when the seedling N is sent downward by the vertical feed roller 43 while changing the posture. At the same time, it prevents a sudden change in posture when the seedling N is in the vertical orientation, thereby preventing the seedling from being damaged.
In addition, by positioning the front end position of the foliage receiving portion 47 at the center position in the front-rear direction between the vertical feed rollers 43, the foliage portion Nb of the seedling N is continuously bitten between the vertical feed rollers 43 from the root to the tip. Seedlings N can be sent.
Further, the front end of the foliage receiving portion 47 enters below the tangent line J that is in contact with the upper ends of both the left and right vertical feed rollers 43 (on the side of the biting portion 43a of the vertical feed roller 43), so that the foliage portion Nb is surely obtained. Can be held between the vertical feed rollers 43.

Further, the lower end portions of the fixed receiving member 49 and the movable receiving member 50 of the floor soil receiving portion 45 are configured to be positioned below the tangent line J that contacts both upper end sides of the left and right vertical feed rollers 43, and By making the time when the soil portion Na comes off from the floor soil receiving portion 45 approaches the time when the foliage portion Nb is bitten between the vertical feed rollers 43, the foliage portion Nb is surely bitten between the pair of vertical feed rollers 43. Therefore, when the seedling N is sent out and sent by the claw 59, the seedling N is not flipped by the vertical feed roller 43.
In addition, when the seedling N is received by the seedling receiving means 41 and temporarily held, it is held in an inclined posture that moves upward as it goes backward, so that when the posture is changed from the horizontal posture to the vertical posture, the posture is abrupt. The change can be prevented to prevent the seedling N from being damaged, and further, when the feeding claw 59 pushes down the floor soil portion Na of the seedling N, the floor soil portion Na is further inclined so that the seedling N occurs from the standby state. Therefore, it is possible to prevent the seedling from being damaged by preventing a sudden change in posture when the posture is changed from the horizontal posture to the vertical posture.

In the present embodiment, the left and right vertical feed rollers 43 are inclined such that a line segment H passing through these axial centers G and orthogonal to the axial centers G moves upward in the left-right direction. Therefore, the seedling N becomes a vertical posture inclined outward in the left-right direction as it goes upward, and the seedling N is released in accordance with the inclined ascending / descending direction of the planting body 26, and the seedling N is planted. Even if the timing of entering the body 26 is somewhat delayed, the seedling N surely enters the planted body 26.
A seedling guide 71 is provided below the pair of vertical feed rollers 43 and above the planted body 26 located at the top dead center position. The seedling posture changing device 38 changes the posture to a vertical posture. The seedling N is put into the planting body 26 through the seedling guide 71.

This seedling guide 71 is fixed to the frame F side of the transplanting device 1B, and is formed in a cylindrical shape whose upper side becomes wider as it goes upward. The lower part of the seedling guide 71 is inserted into the planting body 26 located at the top dead center.
The seedling N that has been sent to the planting body 26 in the vertical orientation is planted by the planting body 26 in the field ridge.
In the transplanter 1 described above, the seedling N is planted in the cocoon while running by repeating the operation of supplying the seedling N to the planted body 26 by the seedling supply device 27 and planting the seedling N. Further, in the transplanter 1 of the present embodiment, it is a two-row transplanter and the transplanter 1B is provided offset from the center in the left-right direction of the left and right front and rear wheels 2 and 3 to the left and right side (left side), It is configured so that four-way reciprocating planting can be performed (two lines are planted on one side in the left-right direction on the upper surface side of the basket in the forward path and two lines are planted on the other side in the left-right direction on the upper surface side of the basket in the return path).

As shown in FIGS. 1 to 3 and FIGS. 11 to 14, the soil covering and pressure reducing device 29 includes a pressure reducing wheel 28 and a support device that supports the pressure reducing wheel 28 on the frame F of the transplanting device 1 </ b> B so that the vertical position can be adjusted. 76, a driving device 77 for transmitting the power from the engine E (power source) to the pressure reducing wheel 28 to forcibly rotate the pressure reducing wheel 28, and a scraper for scraping off the dirt adhering to the outer peripheral surface of the pressure reducing wheel 28. 78.
A pair of left and right pressure wheels 28 are provided for each planted body 26 (therefore, in this embodiment, a pair of left and right pressure wheels 28 are provided in the left and right direction), A pair of left and right pressure-reducing wheels 28 for each planted body 26 are arranged at the rear of the left and right sides of the planted body 26 and roll on the left and right sides of the planting position of the seedling N to form planting holes. The soil on both the left and right sides of the supplied seedling N is pressed and pressed down, and the soil is pressed against the seedling N to cover it.

The support device 76 includes a support frame 79 provided in the middle in the front-rear direction of the second frame 33 of the frame F of the transplant device 1B, and a swing frame 82 provided on the support frame 79 so as to be swingable up and down. And a vertical position adjusting mechanism 87.
As shown in FIGS. 1, 2, and 11, the support frame 79 is disposed in the left-right direction so as to cross the second frame 33, and is fixed to the second frame 33. The arm portion 81 is provided so as to protrude from the left and right ends of the portion 80 toward the front lower side.
The swing frame 82 includes a left and right main hook 83 and left and right auxiliary hooks 84 extending forward from both left and right sides of the main hook 83. The front part is pivotally connected to the lower end side of the arm part 81 on the same side of the left and right so as to be pivotable about the left and right axial centers, so that the swing frame 82 can swing up and down. Has been.

Four mounting plates 85 are fixed to the main frame portion 83 of the swing frame 82 in the left-right direction, and one mounting stay 86 is fixed to each mounting plate 85 with a bolt or the like. A pressure wheel 28 is attached to each.
Each attachment stay 86 is attached to the attachment plate 85 so that the position in the left-right direction can be adjusted, and the position in the left-right direction of each pressure-reducing wheel 28 can be adjusted.
The vertical position adjustment mechanism 87 is interposed between the swing frame 82 and the second frame 33, and includes an operation lever 88, a locking plate 89 that locks the operation lever 88, and the operation lever 88 swinging. The operating lever 88 can be locked to the locking plate 89 at a plurality of positions, and the locking position of the operating lever 88 with respect to the locking plate 89 is changed. By doing so, the height of the pressure-reducing wheel 28 can be adjusted.

The pair of left and right pressure-reducing wheels 28 with respect to each planted body 26 are arranged so as to face each other in the left-right direction, and are arranged so as to have an inclined shape in which the rotation axis X shifts upward as it goes in the facing direction. Thus, the left and right pressure-reducing wheels 28 are inclined so as to gradually increase as the facing distance goes upward.
Further, the outer peripheral surfaces of the pair of left and right pressure-reducing wheels 28 are formed in a tapered shape having a diameter that gradually decreases in the direction of the rotation axis X and in the opposite direction, and are configured to come into surface contact with the ground. ing.

Further, the lower side of each mounting stay 86 is disposed on the opposite side of the pair of left and right pressure-reducing wheels 28 with respect to each planting body 26. A support shaft 91 that is rotatably supported around is provided.
A bearing 92 is provided at the center of each pressure-reducing wheel 28, and the bearing 91 is inserted into the bearing 93 so that the pressure-reducing wheel 28 is attached to the mounting stay 86 and the support shaft. 91 is rotatably supported.
Further, the pressure reducing wheel 28 is secured to the support shaft 91 by a bolt 94 screwed to the tip end side of the support shaft 91.

The scraper 78 is configured by bending a wire along the pressure reducing wheel 28, and one end side is fixed to the mounting stay 86 by a bolt 95 screwed into the mounting stay 86, and the other end side is the retaining bolt. 94, the scraper 78 is fixed to the support shaft 91, and is provided so that the middle portion is in sliding contact with the outer peripheral surface of the pressure reducing wheel 28 or with a slight gap from the outer peripheral surface. The soil attached to the outer peripheral surface of the pressure wheel 28 is scraped off.
The driving device 77 includes a driving plate 96 provided on each pressure reducing wheel 28, a driving gear 97 meshing with the driving plate 96, a driving shaft 98 for driving the driving gear 97, and an engine E on the driving shaft 98. And a power transmission device 99 for transmitting the power from the.

Each drive panel 96 is disposed on the opposite surface of the pair of left and right pressure-reducing wheels 28, and is integrated with the pressure-reducing wheel 28 in the fitting portion 100 provided on the opposite side of the bearing portion 92 of the pressure-reducing wheel 28. It is externally fitted so as to be rotatable and movable in the direction of the rotation axis X, and is prevented from being detached from the fitting portion 100 by a retaining member 101.
An urging member 104 made of a compression coil spring fitted into the bearing portion 92 is provided between the driving plate 96 and the wall portion 28a on the opposite side of the pressure-reducing wheel 28, so that the driving plate 96 is a retaining member. It is urged to be pressed against 101.

Further, on the outer peripheral side of each drive panel 96, a circumferentially equal interval is provided on the circumference centered on the rotation axis X of the pressure reducing wheel 28 (the axis of the support shaft 91), and the entire circumference is rectangular. An engaging hole 102 having a shape is formed.
The engagement hole 102 is formed to be inclined with respect to the radial direction of the drive panel 96 so as to move forward in the rotational direction Y of the pressure reducing wheel 28 as it goes outward in the radial direction.
A support cylinder 103 having an axial center in the front-rear direction is fixed to the lower end of each mounting stay 86, and a drive shaft 98 is inserted into the support cylinder 103 and is supported rotatably around the axis in the front-rear direction. Yes.

The drive shafts 98 are arranged so as to be displaced from each other on the upper and lower sides of the rotation axis X of the pressure reducing wheel 28.
Specifically, the drive shaft 98 corresponding to the two pressure wheels 28 on the outer side in the left-right direction and the pressure wheel 28 on the right side of the adjacent pressure wheel 28 on the center side in the left-right direction among the two sets of pressure wheels 28 rotates. The drive shaft 98 corresponding to the pressure-reducing wheel 28 on the left side of the pressure-reducing wheel 28 located on the lower side of the axis X and adjacent to the central side in the left-right direction is located on the upper side of the rotation axis X.
Of the two sets of pressure-reducing wheels 28, the support shaft 91 that supports the two pressure-reducing wheels 28 on the outer side in the left-right direction and the pressure-reducing wheel 28 on the right side of the pressure-removing wheel 28 that is adjacent on the center side in the left-right direction is attached to the mounting stay 86. The support shaft 91 that is provided directly on the lower end side of the support shaft and supports the pressure-reducing wheel 28 on the left side of the pressure-reducing wheel 28 that is adjacent at the center in the left-right direction is interposed between the support cylinder 103 and the support plate 105 fixed to the support cylinder 103. The mounting stay 86 is provided.

A drive gear 97 is fitted to a rear end portion of the drive shaft 98 protruding rearward from the support cylinder 103 so as to be integrally rotatable. The drive gear 97 is inserted into the engagement hole 102 on the rear side of the drive panel 98. Meshed.
The power transmission device 99 is provided corresponding to each drive shaft 98, the rear end side is interlocked with the drive shaft 98, and the front end side is rotatably supported by a transmission case 106 disposed below the transmission case M. Power is transmitted from the transmission shaft 107, the power take-off shaft 108 provided on the side surface of the transmission case M through the bevel gear transmission mechanism 109, and power is transmitted from the input shaft 110 to each transmission shaft 107. And a transmission mechanism 111.

Power from the engine E is transmitted to the power take-off shaft 108 through a transmission mechanism in the transmission case M, and power is transmitted from the power take-out shaft 108 to each drive shaft 98 through a power transmission device 99. When the drive gear 97 is rotationally driven together with the drive shaft 98, the pressure-reducing wheel 28 is rotationally driven in the Y direction indicated by the arrow in FIG. 13 (rotational drive (forward rotation drive) so that the pressure-reducing wheel 28 moves forward). .
In the above configuration, in the case where the drive gear 97 is disposed so as to be displaced above the rotational axis X of the pressure reducing wheel 28, the drive gear 97 is separated from the ground, so that mud or the like is trapped or soiled. Wear of the drive gear 97 due to dust can be prevented.

Further, in the case where the drive gear 97 is disposed so as to be displaced below the rotational axis X of the pressure reducing wheel 28, the drive gear 97 is laterally outward from the upper end on the opposite side of the pressure reducing wheel 28. Therefore, the pressure-reducing wheel 28 and the drive gear 97 can be configured compactly in the left-right direction.
In particular, the drive gear 97 that drives one of the two pressure-reducing wheels 28 adjacent to the central side in the left-right direction is displaced from the rotational axis X of the pressure-reducing wheel 28 to one side vertically and the other. Since the drive gear 97 for driving the pressure-reducing wheel 28 is displaced to the other side of the rotation axis X of the pressure-reducing wheel 28, the two sets of pressure-reducing wheels 28 are made to approach in the left-right direction and the planting strip is moved. The gap can be narrowed, or the diameter of the pressure-reducing wheel 28 can be increased even if the spacing between the planting strips is narrow.

Further, the engagement hole 102 is formed so as to be inclined with respect to the radial direction of the drive panel 96 so as to move forward in the rotational direction Y of the pressure reducing wheel 28 as it goes outward in the radial direction. Even if the gear 97 is arranged so as to be displaced to one of the upper and lower sides with respect to the rotational axis X of the pressure reducing wheel 28, the drive gear 97 smoothly meshes with the engagement hole 102.
Further, when the pressure-reducing wheel 28 is locked due to a rock or the like being caught, the drive panel 96 moves against the urging force of the urging member 104 and disengages from the drive gear 97, thereby driving the pressure-reducing wheel 28. Can be prevented from being overloaded. Moreover, since the drive system does not stop, planting can be continued. In addition, when the stone or the like that has been caught is released and the pressure-reducing wheel 28 is unlocked, the driving panel 96 is engaged with the driving gear 97 by the urging force of the urging member 104 and is naturally returned.

It is a side view of a transplant machine. It is a top view of a transplant machine. It is a side view of a transplant device etc. It is a rear view of the principal part of a transplant device. It is a side schematic structure figure of a seedling supply device. It is a side view of a seedling posture changing device. It is a rear view of a seedling posture changing device. It is a side view of the principal part of a seedling posture changing device. It is a side view of the principal part of the seedling attitude | position change apparatus at the time of pushing down a seedling and making it bite into a vertical feed roller. It is a top view of a seedling posture changing device. It is a rear view of a soil covering and suppressing device. FIG. It is the figure which looked at the suppression wheel from the axial direction outer side. It is a back surface expanded sectional view of a suppression wheel. It is the side view and back sectional drawing of the pressure-reducing wheel which concerns on a comparative example.

Explanation of symbols

26 Planting body 28 Presser wheel 96 Drive panel 97 Drive gear 102 Engagement hole 104 Energizing member N Seedling (pot seedling)
X Rotational axis of the wheel

Claims (4)

A pair of left and right repressing wheels (28) for rolling down the left and right sides of the seedling (N) that rolls on both the left and right sides of the seedling planting position in the field to suppress the soil on both the left and right sides. In the transplanting machine in which the rotation axis (X) is inclined so that its rotational axis (X) moves upward as it goes in the opposite direction so that the interval between the left and right pressure-reducing wheels (28) gradually increases as it goes upward ,
Engagement holes (102) spaced apart in the circumferential direction around the rotation axis (X) are provided on the surface opposite to the opposing side of the left and right pressure-reducing wheels (28). A drive gear (97) that rotationally drives the pressure-reducing wheel (28) by meshing with the joint hole (102) and rotating is provided, and this drive gear (97) is connected to the rotational axis (X) of the pressure-reducing wheel (28). A transplanting machine characterized in that it is arranged so as to be displaced on one side of the upper and lower sides. A plurality of planting bodies (26) for planting seedlings (N) are provided in the left-right direction, and a pair of pressure-reducing wheels (28) are provided in a pair in the left-right direction corresponding to the plurality of planting bodies (26). The drive gear (97) that drives one of the two pressure-reducing wheels (28) adjacent in the left-right direction and the pressure-removing wheel (28) adjacent to the center in the left-right direction is the rotational axis of the pressure-reducing wheel (28) ( X) and the drive gear (97) that drives the other pressure-reducing wheel (28) is displaced to the other side of the rotational axis (X) of the pressure-reducing wheel (28). The transplanter according to claim 1, wherein the transplanter is configured. A drive panel (96) in which an engagement hole (102) is formed is provided on each pressure reducing wheel (28) so as to be integrally rotatable and movable in the direction of the rotation axis (X), and the pressure reducing wheel (28) is overloaded. When the drive plate (96) is applied, the drive plate (96) is moved in the direction of the rotation axis (X) of the pressure reducing wheel (28) to disengage from the drive gear (97). 3. The transplanter according to claim 1, wherein the energizing member is urged by the urging member (104) in a direction to engage with the drive gear (97). The drive gear (97) is driven to rotate about the front and rear axes, and the engagement hole (102) rotates in the rotational direction of the pressure reducing wheel (28) as it goes outward in the radial direction with respect to the radial direction of the pressure reducing wheel (28). Y) The transplanter according to any one of claims 1 to 3, wherein the transplanter is formed to be inclined so as to move forward.

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