JP3291174B2 - Transplanter seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling planting apparatus for a transplanter for planting vegetable seedlings in a field ridge or the like.

[0002]

2. Description of the Related Art A seedling transfer device (seedling supply device) provided at a rear portion of a traveling machine is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-143805.
And a planting means for supplying seedlings with soil from the plant. The planting means includes a planting claw (planting part) for planting a seedling in a field, and the planting claw at an upper end of the planting claw. And a support tube (guide tube portion) that supports the attached claw in an openable and closable manner.

In the above-mentioned seedling planting apparatus, the seedlings supplied from the seedling supply device are dropped onto the guide tube, and the inside of the guide tube serves as a guide passage for guiding the seeded seedlings. The seedlings are guided to a planting section, and after holding the seedlings with soil at the planting section, the seedlings are pierced into the field and the claws are opened to plant the seedlings.

[0004]

There are many types of soild seedlings to be planted by this type of transplanter, such as cabbage and lettuce. And the size of the pot portion of the seedling box for raising seedlings (the size of the soil portion of the seedlings) may differ. Therefore, the guide passage for guiding the soild seedlings to the planting claws is usually formed large (the guide tube portion is large) so as to be able to correspond to the size of these leaves and the like.

[0005] However, making the guide passage large in this way is preferable when the leaves and soil of the soild seedling are large,
If the seedlings are small, the seedlings may fall in the cylinder when guided to the planting part by the guide passage in the guide cylinder part. Problems such as collapse will occur. Conversely, if the guide passage is formed small, it is possible to prevent the small seedlings from falling down, but there is a problem that large soild seedlings cannot pass through the guide passages smoothly.

[0006] Therefore, the present invention provides a seedling planting apparatus that enables suitable planting of seedlings without falling down, regardless of the size of the seedlings supplied to the planting section. The purpose is to provide.

[0007]

The technical means taken by the present invention to achieve the above object is to provide a planting section 53 for planting soiled seedlings 38 supplied from the seedling supply device 30 in a field. Between the planting section 53 and the seedling supply device 30,
In a transplanter seedling planting device provided with a guide tube portion 51 having a guide passage 52 for vertically guiding 8 from the seedling supply device 30 to the planting portion 53, the guide tube portion 51 is provided inside the tube. A pair of opposing walls 52 forming a guide passage 52
a, it has a 52b, opposite wall 52a, of the 52b
One wall portion 52a is provided so as to be changeable in position so as to move in a direction opposite to the other wall portion 52b so as to supply seedlings.
The position of the other wall 52b at the time of seedling supply position
On the other hand, it is characterized by being provided at a fixed position .

According to this, the position of the wall portion 52a forming the guide passage 52 is changed by moving one side of the wall portion 52a in the distance direction with respect to the other, and the guide passage 52 is formed in accordance with the size of the leaves of the soild seedling 38 and the like. It can be enlarged and reduced, and the fall of the soild seedling 38 can be prevented.

Since the other wall portion 52b is fixed at a position relative to the seedling supply position, it is not necessary to change the seedling supply position even if the guide passage 52 is expanded or contracted according to the size of the seedling 38.

Further, the present invention is characterized in that the position-changeable wall portion 52a is provided so that the inclination angle can be changed so as to expand and contract the lower side of the guide passage 52. The inclined seedling 38 can be prevented from falling down by changing the inclination angle, and by changing the angle so that the guide passage 52 becomes tapered, the soiled seedling 38 is inserted into the guide passage 52 in an inclined state. Even if this is done, the posture can be reliably corrected to the upright posture and supplied to the planting section 53.

Further, the present invention is characterized in that the position-changeable wall portion 52a is provided so as to be detachable from the guide tube portion 51, and the inside of the guide tube portion 51 is removed by removing the wall portion 52a. The planting work can be performed in a state where the entirety is the guide passage 52, and the work of exchanging and cleaning (dropping) the wall portion 52a can be easily performed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The vegetable transplanter 11 shown in FIG. 5 is a walking type having a steering handle 13 at the rear of a traveling vehicle body 12, and runs over a ridge 14 in the longitudinal direction thereof while covering a seedling 38 with a multi-film M. The ridges 14 are planted at predetermined intervals.

The traveling vehicle body 12 has a gantry 16 at the front,
An engine 17 is mounted on the gantry 16, and the engine 17 is covered with a bonnet 18. A transmission case 19 is fixed to the rear of the gantry 16, and is formed with a square pipe or the like at the rear of the transmission case 19. The front portion of the main frame 15 is fixed, and the rear portion is bent upward to serve as a mounting portion for the steering handle 13. The power of the engine 17 is transmitted to the transmission case 19.

Power from the inside of the transmission case 19 is supplied to a wheel transmission shaft 20 projecting to the left and right sides and the wheel transmission shaft 2.
The first PT provided rearward from the left side and protruding left and right.
An O-shaft 21 and a second PTO shaft 22 projecting rearward and upward are taken out by three systems. The left and right ends of the wheel transmission shaft 20 support left and right drive wheels 24 (rear wheels) via a transmission case 23 that swings up and down around the axis.
The drive wheels 24 can be driven by the power transmission body 25 inside. This drive wheel 24 rolls in the groove between the ridges 14. In addition, a pair of left and right front wheels 26 and a ridge height detection roller 27 are provided at a front portion of the traveling vehicle body 12.

At the rear of the traveling vehicle body 12, there is a transplanting work part 29.
Is provided. The transplanting operation unit 29 includes a seedling supply device 30 and a planting device 31 for planting the soiled seedling 38 supplied from the seedling supply device 30 on the ridge 14 by the planting tube 50.
And a multi-film M in advance at the position where the seedling 38 is to be planted
And a multi-film punching device 32 for punching holes for planting. The seedling supply device 30 is driven by the rotational power of the second PTO shaft 22, and the planting device 31 and the multi-perforation device 32 are driven by the rotational power of the first PTO shaft 21.

The seedling supply device 30 is mounted on the main frame 15, and transfers the seedling trays 36 in which a large number of pot portions 37 in which soiled seedlings 38 are grown are arranged in a row and a row in the horizontal and vertical directions. From the seedling transfer device 35 and the seedling tray 36,
Seedling removal claw 4 at a predetermined seedling removal position with respect to planting device 31.
1, the seedlings 38 are taken out one by one, and the seedlings 38 are transferred to the upper part of the planting device 31 while drawing a locus X shown in FIG. And an apparatus 40. The seedling tray 36 is made of resin, has flexibility, and has a large number of pot portions 3 arranged vertically and horizontally.
7 are provided so as to protrude from the rear surface, and soiled seedlings 38 are raised in each pot portion 37.

A transmission shaft 43 connected to the second PTO shaft 22 is connected to the power receiving shaft 42 of the seedling supply device 30 via a universal joint, and the above-described operation is repeated by the power from the transmission shaft 43. It is. As shown in FIGS. 3 to 5, the planting device 31 and the multi-film punching device 32 are provided on a device frame 28 that is vertically swingably supported by the first PTO shaft 21 of the transmission case 19. The device frame 28 includes a square pipe-shaped left and right frames 28L and 28R, and a connecting frame 28 for connecting the rear end portions of the left and right frames 28L and 28R.
A. The first PTO shaft 21 is inserted and supported by bearings 28B provided at the front end of the right frame 28R and the front end of the left frame 28L.

A drive shaft 63 is rotatably supported by left and right bearings 68 fixed to the apparatus frame 28. A sprocket 64 is provided at the left end of the drive shaft 63, and a transmission chain 66 is wound around the sprocket 64 and a sprocket 65 provided at the left end of the first PTO shaft 21, so that the rotational power of the engine 17 is supplied. The power is transmitted to the drive shaft 63, and the power from the drive shaft 63 is transmitted to the planting device 31 and the multi-perforation device 32. Therefore, the planting device 31 and the multi-perforation device 3
2 is driven by the same drive shaft 63, thereby simplifying the apparatus and reducing the cost. The sprocket 6
The transmission chains 66 are covered with a chain case 67.

The rear of the device frame 28 is
A soil covering roller 33 is provided, and a rear end of the device frame 28 is suspended from the main frame 15 so that the device frame 28 can swing up and down according to the height of the ridge 14. As shown in FIGS. 3 and 4, the planting device 31 includes a planting cylinder 50 that is stabbed and moved with respect to the ridge 14 so that the seedling 38 supplied from the seedling supply device 30 is planted in the ridge 14 at predetermined intervals. And a swing link mechanism 45 for vertically moving the planting cylinder 50 up and down and moving it back and forth.

The swing link mechanism 45 has a first parallel link 46 whose upper end is pivotally supported by the apparatus frame 28 so that the lower end can freely swing back and forth.
A pivot plate 48 is pivotally connected to the lower end of the second parallel link 47, and a front end of the second parallel link 47 is pivotally connected to the pivot plate 48, and a planting cylinder 50 is pivotally connected to the rear end of the second parallel link 47. are doing. Also, the upper link 47a of the second parallel link 47
The distal end of a crank arm 49 provided on a left-right drive shaft 63 provided on the device frame 28 is pivotally connected.

Therefore, the rotation of the crank arm 49 via the drive shaft 63 by the power from the first PTO shaft 21 causes the first and second parallel links 46 and 47 to move the planting cylinder 50 up and down and back and forth. , And draws a substantially elliptical trajectory Y. When the planting tube 50 pierces the ridge 14 while traveling, the planting tube 50 does not move substantially forward with respect to the field. Has become.

As shown in FIG. 2, the planting tube 50 has a guide tube portion 51 having an upper portion having a receiving port 60 for the seedling 38, and a lower portion opening and closing in a front-rear direction with a mounting pin 56 as a fulcrum. A pair of front and rear planting portions (openers) 53 are provided. The opener 53 can be opened and closed by a bending link pin 55 by the operation of the opening and closing link 54. Then, the soild seedling 38 received from the receiving port 60 is held at the lower part of the opener 53, and at the bottom dead center of the locus Y of the planting tube 50 shown in FIG. A planting hole is formed, and is opened back and forth by an interlocking tool 61 pivotally connected to the opener 53 and the device frame 28, and the seedling 38
Can be planted. The front and rear openers 53 are urged by a tension spring 58 so as to always close when the interlocking tool 61 is not operating. The open / close link 54 of the opener 53 has an opener 53.
Is provided with a stopper bolt 59 for restricting the opening degree.

The guide tube 51 is provided with a receiving port 60 at its upper part.
Are formed in a substantially rectangular shape, and as shown in FIG. 2, are formed eccentrically slightly forward from the seedling holding position by the opener 53. A guide passage 52 for guiding the seedling 38 received from the receiving port 60 to the opener 53 is formed inside the guide cylinder 51. Guide passage 52
Is formed by being surrounded by the front surface of the movable wall portion 52a attached to the rear wall portion 51b of the guide tube portion 51 via the position changing means 57, the inner surface of the front wall portion 52b of the guide tube portion 51 and the inner surfaces of the left and right side walls. Have been.

The movable wall 52a is formed of a flat metal plate. The lower end of the movable wall 52a is extended to substantially the same position as the lower end of the guide cylinder 51, and the upper end is larger than the guide cylinder 51. It slightly protrudes, and this protruding portion serves as a mounting portion for the position changing means 57. Note that the movable wall portion 52a can be formed of a resin plate or a rubber plate or the like instead of a metal plate. When the movable wall portion 52a is formed of a flexible member such as a rubber plate, the Can also prevent landslide, and in the case of resin, it can be prevented from sticking to the soil by forming it with a fluororesin. Further, the metal plate may be coated with fluorine.

The position changing means 57 includes a substantially L-shaped bracket 77 which is fixed to a seat 76 fixed to the outer surface of the rear wall 51b of the guide cylinder 51 by a bolt. A pair of left and right projecting pieces 78 projecting
And a pair of right and left mounting arms 79 projecting rearward from the upper rear surface of the movable wall portion 52a and fixed to the projecting piece 78 by connecting means 82 such as bolts and nuts. Has an insertion hole 80 formed therein, and a plurality of adjustment holes 81 formed in the mounting arm 79. One of the plurality of adjustment holes 81 is adapted to the insertion hole 80 of the protruding piece 78 and fixed by the connecting means 82. Thus, the movable wall 52a can be moved in the front-rear direction to change the position. In addition, as shown in FIG. 6, the adjusting hole 81 may be formed in a long hole instead of a plurality of round holes.
Step 2a can be adjusted steplessly within the range of the long hole, and the movable wall portion 52a can be moved only by loosening it without removing the bolt and nut.

Therefore, the movable wall portion 52a can be moved in a direction opposite to the front wall portion 52b of the guide tube portion 51 facing the movable wall portion 52a to change its position.
The space between the front and rear directions of the guide passage 52 can be expanded and contracted. Further, the movable wall 52a is provided with bolts of the connecting means 82,
By loosening the nut, it swings back and forth with the bolt as a fulcrum, and it is possible to change the inclination angle,
The size of the lower part of the guide passage 52 can be enlarged or reduced.

When supplying the seedlings 38 to the planting cylinder 50, first, the guide passage 52 is expanded or contracted in accordance with the size of the leaves or soil portion of the seedlings 38 to be supplied. That is,
When the leaves and soil part of the seedling 38 to be supplied are large (2 in FIG. 1)
The dashed line) indicates that the movable wall portion 52a forming the guide passage 52 is moved rearward by the position changing means 57 and the front wall portion 52b
Expand and fix the interval with. On the other hand, when the leaves and soil portion of the seedling 38 are small, the position changing means 57 moves the movable wall portion 52.
a is moved forward to reduce and fix the distance from the front wall 52b. In addition, the seedling 38 with the inclination angle of the movable wall portion 52a.
Change according to the size of.

Then, the seedling removal claw 41 in the seedling supply device 30 described above transfers the seedling 38 to the vicinity of the receiving port 60 of the planting cylinder 50 that has risen, and drops the seedling 38 into the receiving port 60. The soild seedling 38 is guided downward by the guide passage 52 and falls to the opener 53. At this time, since the guide passage 52 responds by expanding and contracting the front and rear according to the size of the seedling 38, the seedling 38 does not fall down in the guide passage 52. The soild seedling 38 can be guided to the opener 53 in an upright posture. In addition, the inclination angle of the movable wall portion 52a can be adjusted, and the lower portion of the guide passage 52 can be enlarged or reduced according to the size of the seedling 38. At this time, if the lower portion of the guide passage 52 has a tapered shape, the soild seedling 38 that has been tilted and inserted into the guide passage 52 can be corrected to an upright posture as it falls, and the opener 53 can be more reliably opened. The seedling 38 can be dropped in an upright posture.

The movable wall 5 forming the guide passage 52
2a is moved relative to the front wall 52b of the guide tube 51 according to the size of the seedling 38 and its position is changed, but the position of the front wall 52b of the guide tube 51 at the time of seedling supply is changed. The position (the position at which the guide cylinder portion 51 is substantially at the top dead center by the swing link mechanism 45) is always constant with respect to the seedling supply position of the seedling supply device 30, regardless of the size of the soiled seedling 38. The seedling 3 with the front wall portion 52b of the guide tube portion 51 as a reference.
By supplying 8, it is not necessary to change the seedling supply position even if the guide passage 52 is enlarged or reduced.

The mounting arm 7 of the position changing means 57
The movable wall portion 52a can be removed from the guide tube portion 51 by releasing the connection between the protrusion 9 and the protruding piece 78 or releasing the bolt fixation between the seat portion 76 and the bracket 77. The inside of the guide cylinder 51 itself forms the most enlarged guide passage 52, which is suitable for transplanting a large soild seedling 38. In addition, by making it removable, it is possible to easily replace the movable wall portion 52a, remove soil, and clean the soil of the planting tube 50.

A scraper means 62 is provided on the rear side of the planting cylinder 50. The scraper means 62 includes an inner scraper section 85 and an outer scraper section 86,
When the planting cylinder 50 is pushed into the ridges 14 and planted the seedlings 38 and is moved upward by the swinging link mechanism 45, the inner scraper portion is formed inside the opener 53 through the opening 53 a formed in the upper portion of the rear side surface of the opener 53. 85 enters, and the inner surface and the outer surface of the opener 53 are sandwiched between the inner and outer scraper portions 85 and 86 to scrape off the adhered soil.

An opening 53a for invading (removing adhering soil) of the inner scraper portion 85 of the scraper means 62 is provided at the rear side of the opener 53, and the soild seedling 38 is moved from the guide tube portion 51 to the opener 53. It is conceivable that the movable wall portion 52a forming the guide passage 52 in the guide tube portion 51 may be disposed forward of the opening 53a so that the guide passage 52 may be caught by the opening 53a.
Since it is kept away from a, the soild seedling 38 is prevented from being caught in the opening 53a.

In the above embodiment, the guide cylinder 5
1 is integrally movable with the opener 53 so as to be able to move up and down and back and forth. However, the guide tube 51 and the opener 53 are separated from each other, and only the opener 53 is moved up and down and back and forth by the swing link mechanism 47. 51 may be fixed at a fixed position such as the device frame 28. FIG. 7 shows a guide tube portion 51 according to the second embodiment. The guide tube portion 51 has a front and rear U-shaped cup portion 87 overlapped at its side wall portion, and this overlapped portion is bolted and bolted. The portion surrounded by the inner wall of the guide tube portion 51 is a guide passage 52.

A long hole 89 extending in the front-rear direction is formed on one side wall of the front and rear cup portions 87, and an insertion hole 90 is provided on the other side wall, and the insertion hole 90 and the long hole 89 are matched. The long hole 89, the insertion hole 90, and the connecting means 88 are connected within the length of the long hole 89 by the front and rear wall portions 52a, 52b of the guide tube portion 51.
The position changing means 57 is configured to be able to change the position by moving one of the front and rear wall portions 52a, 52b in a direction facing the other so as to enlarge or reduce the distance between the two.

Therefore, similarly to the first embodiment, the size of the guide passage 52 can be increased or reduced according to the size of the seedling 38, and the falling of the seedling 38 can be prevented. Further, the position of the front wall portion 52b at the time of seedling supply is always set to a constant position with respect to the seedling supply position,
By changing the position of “a” with respect to the front wall portion 52b, it is not necessary to change the seedling supply position when changing the size of the guide passage 52.

Further, the connection by the connecting means 88 is released to separate the front and rear cup portions 87 so that maintenance such as cleaning work can be facilitated. Also in this embodiment, the guide tube 51 is always fixed to the seedling supply position, and only the planting portion 53 is connected to the swing link mechanism 4.
7, it may be moved up and down and back and forth.

The present invention is not limited to the above embodiment ,
The design can be changed as appropriate, for example, by forming the guide cylinder in a cylindrical shape and forming the flexible wall forming the guide passage in an arc shape. Further, in the above-described embodiment, the seedling transplanting apparatus according to the present invention is employed in a self-propelled walking type transplanter. However, it can also be employed in a riding transplanter and the like. ,
The present invention can also be applied to a multi-row transplanter such as a double-row planting and a triple-row planting.

[0038]

According to the present invention, the position of the wall forming the guide passage for guiding the seeded seedling to the planting portion can be changed so that the guide passage can be expanded and contracted. By changing the size of the guide passage according to the above, the fall of the soild seedling is prevented, and suitable seedling planting becomes possible.

Further, according to the present invention, the size of the guide passage can be adjusted to the size of the soiled seedling or the like by moving one wall forming the guide passage toward and away from the other wall to change the position. In addition, since the other wall portion is kept at a fixed position with respect to the seedling supply position, it is not necessary to change the seedling supply position even if the guide passage is expanded or contracted according to the size of the soil seedling.

Further, according to the present invention, since the inclination angle of the wall portion whose position can be changed can be changed so as to expand and contract the lower side of the guide passage, the inclination angle is changed according to the size of the seedling. Can be prevented, and by changing the angle so that the guide passage becomes tapered, even if the seedling is inserted into the guide passage in an inclined state, the posture is surely corrected to the upright posture. Can be supplied to the planting section.

According to the present invention, the wall portion whose position can be changed is provided so as to be detachable from the guide tube portion, and by removing the wall portion, the planting operation can be performed even in a state where the guide passage is expanded most. It is possible, and work such as replacement and cleaning of the wall is facilitated.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a planting tube showing a first embodiment of the present invention.

FIGS. 2A and 2B show a transplanting tube according to the first embodiment of the present invention, wherein FIG. 2A is a plan view and FIG. 2B is a side view.

FIG. 3 is a side view of a seedling supply device and a seedling planting device of a transplanter employing the present invention.

FIG. 4 is a plan view of a multi-film punching device and a seedling planting device of a transplanter employing the present invention.

FIG. 5 is an overall side view of a transplanter employing the present invention.

FIG. 6 is a modified example of the position changing unit according to the first embodiment of the present invention.

7A and 7B show a second embodiment of the present invention, wherein FIG. 7A is a plan view of a main part, and FIG. 7B is a side view of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Transplanter 30 Seedling supply apparatus 51 Guide cylinder part 52 Guide passage 52a Wall part (movable wall part) 52b Wall part (front wall part) 53 Planting part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01C 11/00-11/02 303

Claims (3)

(57) [Claims] A planting section (53) for planting a soild seedling (38) supplied from a seedling supply device (30) in a field;
A guide passageway (52) for vertically guiding the soild seedling (38) from the seedling supply device (30) to the planting portion (53) between the planting portion (53) and the seedling supply device (30). In the seedling transplanting device of the transplanting machine provided with the guide tube portion (51) having the guide tube portion (51), the guide tube portion (51) has a pair of opposed wall portions (52) forming a guide passage (52) in the tube. 52a, has a 52 b), the opposing wall portions (52a, one of the walls of 52 b)
The (52a), opposing direction to position changeably arranged to perspective moves relative to the other wall portion (52 b), when the seedling supply
The position of the other wall (52b) at the seedling supply position
A seedling planting device for a transplanter, wherein the planting device is provided at a fixed position with respect to the plant. 2. The wall portion (52a) whose position can be changed,
The inclination angle can be changed to enlarge or reduce the lower side of the guide passage (52).
The seedling planting apparatus for a transplanting machine according to claim 1, wherein the seedling planting apparatus is provided with a function . 3. The wall portion (52a) whose position can be changed,
The seedling planting apparatus for a transplanter according to claim 1 or 2, wherein the apparatus is detachably provided to the guide cylinder (51) .