JP2006141361A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter having a seedling receiving means for receiving seedlings at the terminal end side of a seedling transfer belt transferring pot seedlings in a lateral posture, in which seedling receiving means is composed of a bed soil receiving part receiving a bed soil part and a stem/leaf receiving part receiving a stem/leaf part, and by pressing down the bed soil part with a feeding claw, the bed soil receiving part is opened to drop the bed soil part and the stem/leaf part is held by the pair of the longitudinally feeding rollers and sent downward, and thereby, the seedling is sent downward to a planting body with its posture changed to be longitudinal posture, wherein such errors that the seedlings are repelled, the stem/leaf part of the seedling is not held and the seedlings slip and drop through a space between the feeding claw and the longitudinally feeding rollers are prevented. <P>SOLUTION: The space Q between a sending claw 59 for pushing down a bed soil part Na and a longitudinally feeding roller 43 is made narrower than a width U in a direction orthogonal to a depth direction S of the bottom of the bed soil part Na. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

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

Conventionally, as a transplanter, a pot seedling that drops in a horizontal posture from the end of the seedling transfer belt is transferred to the terminal side of the seedling transfer belt that transfers the pot seedling in a horizontal posture in a horizontal direction substantially orthogonal to the depth direction of the floor soil portion. The seedling receiving means includes a pair of receiving members that receive the floor soil part of the pot seedling in a sandwiched manner from both sides of the seedling transfer direction and is configured to be openable and closable. A vertical feed roller that rotates around an axis parallel to a horizontal axis perpendicular to the seedling transfer direction is formed on the lower side of the stem and leaf receiving portion of the seedling receiving means. Provided with a pair of transfer directions, equipped with a feeding claw that pushes down the floor soil part held by the floor soil receiving part. By pushing down the floor soil part with this feeding claw, the floor soil receiving part opens and the floor soil part falls And a pair of vertical feed rollers The foliage is pinched and sent downward, and this changes the posture to a vertical orientation with the foliage facing upward while feeding the pot seedling downward and sends it to the planting body located below the vertical feed roller. There is a transplanter configured as described above (see Patent Document 1).
JP 2004-194553 A

  In the transplanting machine, the pot soil of the pot seedling is sent out in the state that the floor soil portion of the pot seedling in the horizontal orientation is received by the floor soil receiving portion and the stem and leaf portion of the pot seedling is received by the foliage receiving portion. The pot seedling is made to fall down from the floor soil receiving part by swinging it down and swinging the floor soil part to the vertical feed roller side and sandwiching it between a pair of vertical feed rollers rotating the foliage part and sending it downward. The posture is changed from a horizontal posture to a vertical posture while being moved downward, and is transferred to the planting body, but if the stems and leaves of the pot seedlings are not pushed firmly between the pair of reverse feed rollers, There is a problem that the seedling is repelled by the vertical feed roller.

In addition, if the space between the feeding claw when the floor soil part is pushed down and the vertical feed roller is wide, the foliage of the pot seedling is not bitten by the vertical feed roller and the gap between the feeding claw and the vertical feed roller is reached. In this case, since the pot seedling cannot be sent downward by the vertical feed roller rotating at high speed, there is a problem that the supply of the pot seedling to the planted body is delayed.
Therefore, in view of the above problems, the present invention is such that the pot seedling is repelled by the vertical feed roller, and the stems and leaves of the pot seedling pass through between the feed claw and the vertical feed roller without being bitten by the vertical feed roller. An object of the present invention is to provide a transplanter that can prevent mistakes such as dropping.

The technical means of the present invention for solving this technical problem is to transfer the seedling to the end side of the seedling transfer belt that transfers the pot seedling in a horizontal orientation in a horizontal direction substantially orthogonal to the depth direction of the floor soil portion. A seedling receiving means for receiving a pot seedling falling in a lateral posture from the belt end is provided. The seedling receiving means includes an openable / closable floor soil receiving part for receiving the pot soil of the pot seedling, and a stem and leaf receiving for receiving the stem and leaf part of the pot seedling. And a pair of vertical feed rollers rotating around an axis parallel to the horizontal axis perpendicular to the seedling transfer direction, on the lower side of the stem and leaf receiving portion of the seedling receiving means, and a floor soil receiving portion A pair of vertical feed rollers that are provided with a feeding claw that pushes down the floor soil portion held by the floor, and that rotates when the floor soil receiving portion opens and the floor soil portion falls by pushing down the floor soil portion with the feeding claw. The foliage is pinched by and sent downward In this way transplanter of foliage while feeding the seedlings down was configured to send to the planting body located below the longitudinal feed roller to position change in vertical posture facing upward,
The distance between the feeding claw and the vertical feed roller when the floor soil portion is pushed down is narrower than the width in the direction perpendicular to the depth direction of the bottom portion of the floor soil portion.

Further, a swing arm that is pivotally supported around a swing fulcrum shaft having an axis parallel to the seedling transfer direction on the base side and is swingable up and down around the swing fulcrum shaft is provided. A feeding claw is provided on the tip side of the arm, and the position in the vertical direction of the swing fulcrum shaft is set in the vicinity of the biting part of the vertical feed roller. Between the feed claw and the vertical feed roller when pushing down the floor soil part May be minimized near the biting portion of the vertical feed roller.
Thereby, the delivery claw can be easily brought close to the longitudinal feed roller.
Further, a swing arm that is pivotally supported around a swing fulcrum shaft having an axis parallel to the seedling transfer direction on the base side and is swingable up and down around the swing fulcrum shaft is provided. A feeding claw is provided on the tip side of the arm, and the swing fulcrum shaft is arranged on the side opposite to the floor soil receiving portion arrangement side with respect to the vertical feed roller and spaced apart in the direction of the rotational axis of the vertical feed roller. May be.

  Thereby, a seedling can be pushed down in the direction which makes the stem and leaf part of a pot seedling difficult to put in the vertical feed roller, and the stem and leaf part can be reliably bitten between the vertical feed rollers.

  According to the present invention, the stems and leaves of the pot seedling can be reliably pushed between the vertical feed rollers, the pot seedling is repelled by the vertical feed roller, and the stems and leaves of the pot seedling are fed without being bitten by the vertical feed roller. It is possible to prevent mistakes such as falling through the gap between the claw and the vertical feed roller.

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. A 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.

1-3, the transplant device 1B includes a frame F fixed to the vehicle body B of the traveling body 1A, a planting body 26 for planting the pot seedling N in the field, and a pot on the planting body 26. A seed cover supply device 27 that includes a seedling supply device 27 that supplies the seedling N, and a pressure reducing wheel 28 that presses and suppresses the soil on the side of the pot seedling N planted in the field and presses the soil against the plant to cover the soil. 29 grade.
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 made of a pipe material that is formed in a straight line shape in the front-rear direction from the front part to the middle part, and is formed in an inclined shape that moves upward as the rear part goes rearward. The front end side of the first frame 32 is planted. The transmission case 46 is connected to the lower part of the rear surface side, 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. The seedling N is supplied in a fall, descended with the pot seedling N accommodated therein, enters the field (畝), and opens back and forth, thereby forming a planting hole in the field and placing the pot seedling N in the planting hole. The pot seedling N is planted by falling and releasing (supplying), and the pot seedling N is 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 removing device 7 for taking out the pot seedling N from the seedling tray T, a seedling transferring device 6 for transferring the pot seedling N taken out by the seedling extracting device 7 above the planted body 26, and planting by the seedling transferring device 6 There is a seedling posture changing device 38 for changing the posture of the pot seedling N in the horizontal orientation sent above the attachment 26 to the vertical posture and supplying it to the planting body 26, and each device outputs from the planting transmission case 46. Driven by the motive power.

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. Pot seedlings N such as vegetables (onions) are nurtured.
In addition, in this Embodiment, the shape of the bed soil part Na of this pot seedling N is formed in the truncated cone shape which becomes small diameter as it goes to the bottom part (the cross-sectional area becomes small as it goes to the bottom part) 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 pot seedling N faces forward).

The seedling take-out device 7 is arranged above the seedling transfer device 6, and receives the push seedling 8 that pushes out the pot seedling N from the pot portion P, and the pot seedling N that is pushed out by the extrusion punch 8, and the seedling transfer device 6. And a seedling delivery mechanism 9 for handing over.
The extrusion baskets 8 are provided in a number corresponding to the pot seedlings N in one horizontal row (one horizontal direction row) of the seedling tray T, and are provided on the rear side of the seedling mounting base 5 so as to be movable in the front-rear direction. The pot seedlings N inserted in the horizontal row are pushed forward, and then retracted.
In addition, after the pot seedling N is pushed out, the seedling tray T is vertically fed downward by one horizontal row of the pot seedling N, and the extrusion basket 8 is used until the pot seedling N of the seedling transfer device 6 is exhausted (or most of the Wait until it runs out.

In addition, the seedling tray T is curved on the lower side of the seedling mount 5 and is taken out rearward.
The bed soil portion (root pot) Na of the row of pot seedlings N pushed out from the pot portion 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, the pot seedling N pushed out from the pot portion P is received at the seedling receiving position, and then the pot seedling N is reversed in the front-back direction. The seedling receiving groove 10a passes through the position of the jumping member 12 with the floor soil portion Na of the pot seedling N first, and thereby the pot seedling N becomes the seedling. Pushed out from the receiving groove 10a, the popping member 12 rotates downward (in the direction of the arrow a1) at the same time that the pot seedling N is completely removed from the seedling receiving groove 10a, and drops the pot seedling N onto the lower seedling transfer device 6 Configure to let It has been.

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 pot seedlings N are placed on the seedling transfer belt 16 so that their stems and leaves Nb are lined up in the lateral direction with the back facing sideways, and the seedling transfer belt 16 causes the left and right direction (substantially in the depth direction of the floor soil portion). (Horizontal direction orthogonal to each other), and drops 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 on the front end side of the surface of the seedling transfer belt 16 (the placement side of the floor soil portion Na of the pot seedling N). The pot seedlings N are positioned one by one between the positioning projections 40 adjacent to each other 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 has a seedling receiving means 41 for receiving the pot seedling N that falls in a horizontal posture from the end of the seedling transfer belt 16, a pressing means 42 for pushing down the floor soil portion Nb of the pot seedling N, and the pot seedling N. A pair of left and right vertical feed rollers 43 that are sandwiched and fed at a high speed are provided.

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 pot seedling N. 45, a foliage receiving portion 47 that is disposed behind the floor soil receiving portion 45 and receives the foliage portion Nb of the pot seedling N, and a lower leaf receiver 48 that receives the lower leaf Nc of the pot seedling N. Yes.
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 opposing 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 pot seedling N in the middle in the vertical direction. .

Therefore, the floor soil portion Na of the pot seedling N is guided by the positioning protrusion 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. And the movable receiving member 50 are held so as to be sandwiched between the fixed receiving member 49 and the movable receiving member 50 at a midway portion between them.
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 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 Na to push down the floor soil Na. Is attached with an inclination angle O that shifts to).

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 distance 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 in the depth S direction at the bottom of the floor soil Na of the pot seedling N. The width in the direction perpendicular to each other is narrower than the width U (the diameter of the bottom in the case of a truncated cone-shaped floor soil portion Na, and the interval between the opposite sides of the bottom portion in the case of the floor soil portion Na in the shape of a truncated quadrangular pyramid). 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. Thus, the pot seedling N can be surely sent out even if the pot 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 pot seedling N that has fallen in a horizontal 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 pot seedling N is located at a position indicated by symbol a in FIG. 8, and the pot 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. The
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. Then, it is pushed down while being further inclined so that the pot seedling N is generated, and the stock base side of the foliage Nb is sandwiched between the vertical feed rollers 43.

The pot 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 held by the stem and leaf receiving portion 47, and the leaf and leaf portion Nb. The stock base side is sandwiched between the vertical feed rollers 43 so that the foliage portion Nb is sandwiched between the pair of vertical feed rollers 43 that rotate in reverse to each other at a high speed and fed downward at a high speed.
By combining these operations, the pot seedling N is moved downward from the lateral posture received 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 soil Na is on the lower side.

The arc-shaped portion 70 on the front end side of the foliage receiving portion 47 functions as a guide that effectively changes the posture of the pot seedling N to the vertical orientation when the pot seedling N is sent downward by the vertical feed roller 43 while changing the posture. In addition, the rapid posture change when the pot seedling N is set to the vertical posture is prevented, and the seedling is prevented 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 pot seedling N is continuously bitten between the vertical feed rollers 43 from the root to the tip. You can send pot seedling N.

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 pot seedling N is sent out and sent by the claw 59, the pot seedling N is not flipped by the vertical feed roller 43.

  In addition, when the pot seedling N is received by the seedling receiving means 41 and temporarily held, it is held in an inclined posture that shifts upward as it goes backward, so that when the posture is changed from a horizontal posture to a vertical posture, a sudden change is caused. The posture change can be prevented to prevent the pot seedling N from being damaged. Further, when the floor soil portion Na of the pot seedling N is pushed down by the delivery claw 59, the pot seedling N is generated from the standby state of the floor soil portion Na. Thus, it is possible to prevent the seedling from being damaged by preventing a sudden posture change when changing the posture 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 pot seedling N is in a vertical posture inclined outward in the left-right direction as it goes upward, and the pot seedling N is released in accordance with the inclined ascending / descending direction of the planted body 26. Even if the timing of entering the planted body 26 is somewhat delayed, the pot 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 pot seedling N is introduced 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 pot seedling N that has been sent to the planting body 26 in the vertical orientation is planted by the planting body 26 on the vine of the field, and the left and right suppression wheels 28 are on the left and right sides of the planting position of the pot seedling N. , And the soil on both the left and right sides of the pot seedling N supplied to the planting hole is pressed, and the soil is pressed against the pot seedling N to cover it.

  In the transplanter 1 described above, the pot seedling N is supplied to the planted body 26 by the seedling supply device 27, and the pot seedling N is planted and covered with soil to repeat the operation, so that the pot seedling N can be put on the paddle while traveling. Is planted. Further, in the transplanter 1 of the present embodiment, the transplanter 1B is a two-row transplanter, and the transplanter 1B is provided by being offset from the left and right center 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).

FIG. 11 shows a push-down means 42 according to another embodiment. In this push-down means 42, the position of the rocking arm 60 in the vertical direction (height direction) of the rocking fulcrum shaft 61 is shown. The gap Q between the feed claw 59 and the vertical feed roller 43 when the floor soil portion Na is pushed down to a position near the bite 43a of the vertical feed roller 43 is set to the bite 43a of the vertical feed roller 43. The minimum is in the vicinity.
Other configurations are the same as those in the above embodiment.
With the above configuration, the feeding claw 59 can be easily brought close to the vertical feeding roller 43.

12 to 14 show a push-down means 42 according to still another embodiment. In this push-down means 42, the swing fulcrum shaft 61 of the swing arm 60 is connected to the vertical feed roller 43. The pot seedlings N can be pushed down in the direction in which the stems and leaves Nb of the pot seedlings N are inserted into the vertical feeding rollers 43 by being spaced apart from the vertical feeding rollers 43 at the rear position.
Thereby, the foliage part Nb can be reliably bitten between the vertical feed rollers 43.
In this embodiment, a support base 76 is provided on the rear side of the first frame 32, and the swing fulcrum shaft 61 is supported by a bracket 77 standing on the support base 76. A boss 78 on the base end side (rear end side) of the swing arm 60 is supported on the swing fulcrum shaft 61 so as to be pivotable around the left and right axes, and sent to the front end side of the swing arm 60. A claw 59 is attached.

The lower end side of the lever member 79 is fixed to the boss part 78 of the swing arm 60, and the lever member 79 and the swing arm 60 are swingable integrally around the swing fulcrum shaft 61. Yes.
The rear end side of the interlocking rod 80 is pivotally connected to the upper end side of the lever member 79 so as to be pivotable about a horizontal axis, and the front end side of the interlocking rod 80 is pivotally connected to the distal end side of the pivoting member 67. The pivot member 67 is pivotally connected to be pivotable around the axis in the left-right direction. When the pivot member 67 makes one rotation, the interlock rod 80 is pushed back and forth, and the lever member 79 swings back and forth. Then, the delivery claw 59 reciprocates up and down once.

Other configurations are the same as those of the embodiment shown in FIGS.
Also in the embodiment shown in FIGS. 12 to 14, as in the embodiment shown in FIG. 11, the position in the vertical direction of the swing fulcrum shaft 61 of the swing arm 60 is set to the vertical feed roller 43. The position may be in the vicinity of the biting portion 43a.

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 pot seedling and making it engage with a vertical feed roller. It is a top view of a seedling posture changing device. It is a side view of the pushing-down means concerning other embodiments. It is a side view of the pushing-down means concerning other embodiments. It is a top view of the pushing-down means concerning other embodiment. It is a side view of the principal part of the pushing-down means concerning other embodiment.

Explanation of symbols

16 seedling transfer belt 26 planting body 41 seedling receiving means 43 vertical feed roller 43a biting portion 45 floor soil receiving portion 47 foliage receiving portion 59 feeding claw 60 swinging arm 61 swinging fulcrum shaft C seedling transfer direction G rotation axis N pot seedling Na floor soil portion Nb foliage portion Q interval S depth of floor soil portion U width in a direction perpendicular to the depth direction of the bottom portion of the floor soil portion

Claims (3)

At the end of the seedling transfer belt (16) for transferring the pot seedling (N) in a horizontal orientation in a horizontal direction substantially orthogonal to the depth (S) direction of the floor soil (Na), the end of the seedling transfer belt (16) Provided with seedling receiving means (41) for receiving the pot seedling (N) falling in a sideways posture from the top, and the seedling receiving means (41) is an openable / closable floor soil for receiving the floor soil portion (Na) of the pot seedling (N). It is composed of a receiving part (45) and a foliage receiving part (47) that receives the foliage part (Nb) of the pot seedling (N), and below the foliage receiving part (47) of this seedling receiving means (41), Floor soil which is provided with a pair of vertical feed rollers (43) rotating around an axis parallel to a horizontal axis orthogonal to the seedling transport direction (C) and is supported by the floor soil receiving portion (45). A delivery claw (59) that pushes down the part (Na), and the delivery claw (59) , The floor soil receiving part (45) is opened, the floor soil part (Na) is dropped and the foliage part (Nb) is sandwiched by a pair of rotating vertical feed rollers (43) and sent downward, As a result, while the pot seedling (N) is being sent downward, the posture is changed to the vertical orientation in which the foliage (Nb) is directed upward, and sent to the planting body (26) located on the lower side of the vertical feed roller (43). In the transplant machine configured as follows,
The distance (Q) between the feed claw (59) and the vertical feed roller (43) when the floor soil portion (Na) is pushed down is orthogonal to the depth (S) direction of the bottom portion of the floor soil portion (Na). A transplanter characterized in that it is narrower than the width (U) in the direction of movement. The base side is pivotally supported around a swing fulcrum shaft (61) having an axis parallel to the seedling transfer direction (C), and swings up and down around the swing fulcrum shaft (61). An arm (60) is provided, a feed claw (59) is provided on the tip side of the swing arm (60), and the position of the swing fulcrum shaft (61) in the vertical direction is engaged with the vertical feed roller (43). (43a) The distance (Q) between the feed claw (59) and the vertical feed roller (43) when the floor soil portion (Na) is pushed down is set to a position near the vertical feed roller (43). The transplanter according to claim 1, wherein the transplanter is minimized in the vicinity of the portion (43a). The base side is pivotally supported around a swing fulcrum shaft (61) having an axis parallel to the seedling transfer direction (C), and swings up and down around the swing fulcrum shaft (61). An arm (60) is provided, a feeding claw (59) is provided on the distal end side of the swing arm (60), and the swing fulcrum shaft (61) is placed against the vertical feed roller (43). (45) The transplanter according to claim 1, wherein the transplanter is arranged on the side opposite to the arrangement side and spaced apart in the direction of the rotational axis (G) of the longitudinal feed roller (43).

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