JPH0751858Y2 - Seedling holding structure in transplanting cylinder of transplanter - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is for transplanting seedlings with soil, such as soil block seedlings and paper pot seedlings, which have a soil portion shaped into a certain shape, from a transplanting cylinder that can be inserted into a field. TECHNICAL FIELD The present invention relates to a drop-implanting one that improves the retaining structure for soil-bearing seedlings in the transplantation cylinder.

(Prior Art) FIG. 14 shows a transplantation cylinder 34 in which a soil-grown seedling 27 is held, according to a conventional example proposed in Japanese Patent Application No. 62-147739. The transplantation cylinder 34 has a downwardly tapered shape, and the front wall is an opening / closing plate 39 that swings around the pivot 40, so that the lower end is an opening 41 that can be opened and closed. Then, with the opening 41 closed, the transplantation tube 34
Is put into the field, and the opening / closing plate 39 swings as shown by the phantom line in the figure, so that the soil seedlings 27 held in the transplanting cylinder 34 are sown.
Is dropped and implanted through the opening 41.

(Problems to be Solved by the Invention) Since the transplanting cylinder 34 has a downwardly narrowed shape because it is inserted into the field, the posture of the soil-bearing seedlings 27 held therein is as shown in the figure. The part 49 is the inclined surface 39a of the opening / closing plate 39.
Therefore, the seedling portion 49 also has a posture inclined with respect to the vertical direction. Then, the seedling portion 49 is dropped and transplanted in an inclined posture, and the grown crop is transformed into a distorted product, and there is a problem that the commercial value is lost.

The present invention aims to solve the above problems.

(Means for Solving the Problems) A feature of the present invention is a transplanting machine for transplanting soil-grown seedlings 27 in which a seedling portion 49 is germinated from a soil portion 48 shaped into a certain shape. The transplantation cylinder 34 is provided with a seedling accommodation space 51 for holding the seedlings 27 in an upright posture, and the transplantation cylinder 34 is
It has a downward opening 41 that can be opened and closed by an opening / closing plate 39 attached to the transplantation cylinder main body 35, and is adapted to be vertically inserted into a field, and when the field is inserted, the opening / closing is performed. By opening the plate 39, the soil in the field is pushed away to form the planting hole 46 in the field, and the downward opening is opened.
In the one in which the soil-containing seedling 27 in the seedling accommodation space 51 is dropped and transplanted into the planting hole 46 through 41, in the field of the seedling accommodation space 51 at the time of the vertical inserting operation of the transplanting cylinder 34 to the field. The seedling accommodation space 51 to prevent the invasion of soil by the opening / closing plate 39 is provided in the upper part of the internal space formed by surrounding the transplanting cylinder main body 35 and the opening / closing plate 39,
The seedling accommodating space 51 is surrounded by front, rear, left and right four-sided walls 36, 37, 38, 50 fixed to the transplant cylinder main body 35.
The seedling support plate 53, which is separate from the 37, 38, 50 and the opening / closing plate 39, is an opening / closing plate.
The seedling support plate 53 is attached to the transplantation tube main body 35 so as to open and close below the seedling storage space 51 in conjunction with 39.
Opening plate 39 when pushing 34 up and down in the field
Is covered by the soil in the field.

(Operation) According to the configuration of the present invention, the soil portion 48 of the soil-grown seedling 27 is the transplant cylinder.
The seedling portion 49 is held inside the 34 by a holding means, and in this holding state, the seedling portion 49 is held in a posture without being inclined with respect to the vertical direction. Therefore, when the holding by the holding means is released, the soil-grown seedling 27 is dropped and transplanted without the seedling portion 49 tilting in the vertical direction.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The transplanting machine 1 shown in FIGS. 6 and 7 includes a traveling frame 2 having a rectangular shape in a plan view, and an implantation frame 3 having a rectangular shape in a plan view disposed in the traveling frame 2. The traveling frame 2 and the transplantation frame 3 are connected to each other at their front end portions via a cylindrical body 4 having a horizontal axis so as to be relatively swingable. A drive shaft 5 is fitted in and supported by the cylindrical body 4, and the drive shaft 5 is
An output shaft of a motor 6 fixed to the transplantation frame 3 is interlockingly connected via a chain winding transmission mechanism.

Left and right support arms 7 are swingably connected about a horizontal shaft 8 in the middle of the front and rear of the traveling frame 2, and left and right drive wheels 10 are attached to the lower ends of the support arms 7 via axles 9. . The drive shaft 5 and the horizontal shaft 8 are connected to the speed change means 11
The horizontal shaft 8 and the axle 9 are interlockingly connected via the chain winding transmission mechanism 12, and the traveling drive wheels 10 are driven thereby. Also,
An operator grip handle 14 is provided at the rear of the traveling frame 2.
Is installed.

The left and right traveling drive wheels 10 are attached to the traveling frame 2 via a horizontal control mechanism 15 so as to be adjustable in height, so that the transplanter 1 can be maintained absolutely horizontal even on a sloping ground.

Further, seedling mounts 16 and 17 are attached to the front and rear of the traveling frame 2.

A pressure roller 19 and a pair of left and right side rollers 20 are attached to the front portion of the transplantation frame 3 via a parallel link mechanism 18 so that the height of the pressure roller 19 can be adjusted. The pressing roller 19 rolls on the upper surface of the ridge 21, and the left and right guide rollers 20 roll while elastically sandwiching both shoulders of the ridge 21 with springs outside the drawing. Further, a pair of left and right rear side rollers 23 are attached to the rear portion of the transplantation frame 3 via a link mechanism 22 so that the height thereof can be adjusted. The left and right rear side rollers 23 roll while sandwiching both shoulders of the ridge 21, and the left and right intervals thereof are adjustable.

A rotary table 24 is rotatably attached to the transplantation frame 3 about a vertical axis 25. A plurality of seedling containers 26 are provided on the outer circumference of the rotary table 24 at equal intervals in the circumferential direction, and each seedling container 26 stores one seedling 27 with soil. The bottom of each seedling container 26 can be opened and closed. This allows
When the rotary table 24 is intermittently rotated by a drive mechanism outside the drawing and the seedling container 26 is located above a transplanting cylinder 34 described below, the bottom portion thereof is opened so that the soil-containing seedling 27 is dropped and transferred into the transplanting cylinder 34. Has become.

The upper ends of the first parallel links 29, 30 are pivotally connected to the support frame 28 attached to the transplantation frame 3, and the lower ends of the first parallel links 29, 30 are connected by a connecting body 31. As shown in FIG. 5, front ends of second parallel links 32 and 33 are pivotally connected to the connecting body 31, and rear ends of the second parallel links 32 and 33 are pivotally connected to the transplant cylinder 34. ing.

The transplantation cylinder 34 has a rectangular cross-section and a downwardly tapered shape, and the left and right side walls 36, 37 and the rear wall 38 are constituted by a main body 35 having a U-shape in plan view,
The opening / closing plate 39 constitutes a front wall, and the main body 35 is connected to the second parallel links 32, 33. The lower ends of the left and right side walls 36, 37 are serrated.

The opening / closing plate 39 is swingably attached to the main body 35 about the axis 40 of the horizontal axis, and as shown in FIG. 1, the lower end of the opening / closing plate 39 is moved rearward to close the downward opening 41 of the lower end of the transplantation cylinder 34. Then, as shown in FIG. 2, with the lower end thereof moved forward, the downward opening 41 of the lower end of the graft tube is opened.

The transplant cylinder 34 is vertically driven by a drive mechanism, and the opening / closing plate 39 is also opened / closed. That is, the transplantation frame 3 is provided with a transmission shaft 42 which is interlockingly connected to the drive shaft 5 through a chain winding transmission mechanism, and a rotary arm 43 attached to the transmission shaft 42 has a second parallel link 32, It is pivotally connected to 33. As a result, by the rotation of the rotary arm 43, the tips of the first parallel links 29, 30 draw a locus of α in FIG. 5, and the tips of the second parallel links 32, 33 move vertically while drawing a locus of β in the figure. To do. The locus of this β is elliptical, and the transplant cylinder 34 is thrust into the soil of the ridge 21 at the lower locus.

Further, the transplant frame 3 and the opening / closing plate 39 are bent links 44, 45.
Are connected by. The bending links 44 and 45 become linear when the graft tube 34 reaches the lowermost position. Therefore,
When the transplantation cylinder 34 moves further rearward and upward from that position, the opening / closing plate 39 is pulled by the linear bending links 44 and 45 and swings forward around the pivot 40 to push the soil of the ridge 21 while transplanting. The opening 41 of the tube 34 is opened. By the displacement of the soil, a rectangular planting hole 46 into which the soil seedling 27 falls is formed. When the graft tube 34 moves upward, the bending link 4
The distance between both ends of 4,45 becomes shorter, and the refraction links 44,45
The opening / closing plate 39 closes the opening 41 of the transplantation cylinder 34 by being biased in a linear direction by a spring 47 interposed in the bending portion thereof.

The movement of the first parallel links 29, 30 is interlocked with the opening / closing operation of the bottom portion of the seedling container 26 of the rotary table 24 by an unillustrated interlocking mechanism so that when the transplanting cylinder 34 is located above, As described above, the soil-grown seedling 27 is dropped and conveyed from the seedling container 26 into the transplanting cylinder 34.

Then, as shown in FIGS. 1 and 2, a holding portion that holds the soil portion 48 of the soil-grown seedling 27 in the transplantation cylinder 34 in a releasable manner so that the seedling portion 49 does not incline vertically. Means are provided. In this embodiment, at the rear position of the opening / closing plate 39,
The guide plate 50 is attached to the left and right side walls 36, 37 of the transplantation tube main body 35, and the space surrounded by the guide plate 50 and the main body 35 is a seedling accommodation space 51.
The seedling accommodation space 51 is defined by the left and right side walls 36, 3 of the main body 35.
It is surrounded by a four-sided wall consisting of a rear wall 38 and a guide plate 50, and the lower end opening of this space 51 is openably and closably closed by a seedling support plate 53 swinging around a spindle 52. As shown in FIG. 1, the upper surface of the seedling support plate 53 is a horizontal surface in the closed state of the lower end opening of the space 51, and the bottom surface of the soil portion 48 shaped like a substantially rectangular parallelepiped of the soil-grown seedling 27 is placed there. By being placed,
The seedling portion 49 germinated upward from the soil portion 48 is retained without inclining in the vertical direction.

Then, when the opening / closing plate 39 opens the opening 41 as described above,
As shown in FIG. 2, the seedling support plate 53 swings downward about the spindle 52, and the soil-grown seedlings 27 placed on the seedling support plate 53 are dropped and transplanted into the planting holes 46 in the field. The opening / closing of the seedling support plate 53 is interlocked with the opening / closing of the opening / closing plate 39. That is, the support shaft 52 has the first
A spring (not shown) that urges the seedling support plate 53 in the illustrated state in the downward swing direction is wound, and the downward swing of the seedling support plate 53 by this spring is shown in FIGS. 3 and 4. It is regulated by the engagement / disengagement mechanism 54 so that it can be released.

The releasing mechanism 54 is provided on the outer surface of the left side wall 36 of the transplantation cylinder main body 35, and a substantially L-shaped hooking claw 55 is attached to the protruding portion of the support shaft 52 to the outside of the side wall 36. This hook 55
A hooking surface 56 and a convex curved surface 57 are formed at the tip of the seedling support plate.
When 53 is in the state shown in FIG. 1, the tip of the latching claw 55 is directed upward as shown in FIG. The hooking surface 59 at the lower end of the hooking rod 58 is engaged with the hooking surface 56. The engagement of the retaining claws 55 and the retaining rods 58 regulates the downward swing of the seedling support plate 53 by the spring.

A convex curved surface 60 is formed at the lower end of the latch rod 58, and a midway portion is inserted into a guide tube 61 fixed to the side wall 36 so as to slide vertically, and between the guide tube 61 and the flange 62 on the outer circumference of the rod. The rod 58 is biased downward by the spring 63. A lower end of a link rod 64 is pivotally connected to an upper end of the latch rod 58, and an upper end of the link rod 64 is pivotally connected to a lower end of an arm 65 rotatably attached to the side wall 36. A gear 66 is attached to the arm 65 so as to rotate concentrically, and a tooth 67 capable of meshing with the gear 66 is formed on a part of an outer periphery of an outward projecting portion from the side wall 36 of the pivot 40. This axis 40
The formation position of the teeth 67 with respect to the outer periphery of the gear is a position where it does not mesh with the gear 66 in the state of FIG.

Then, as the opening / closing plate 38 swings in the direction of opening the opening 41, the pivot 40 rotates in the direction of arrow A in the figure, and the fourth
As shown in the figure, the teeth 67 and the gear 66 mesh with each other, the gear 66 rotates in the direction of arrow B, the rotation of the gear 66 is transmitted from the arm 65 and the link rod 64 to the rod 58, and the rod 58 is pulled upward. . Then, when the opening / closing plate 38 opens the opening 41, the engagement between the hooking surface 59 of the rod 58 and the hooking surface 56 of the hooking claw 55 is released, and the seedling support plate 53 has the elasticity of the spring centered on the spindle 52. It swings downward with force, and the soil seedling 27 is dropped and transplanted as described above. The downward swing speed of the seedling support plate 53 by this spring is such that the downward swing of the seedling support plate 53 always precedes the fall of the soil-grown seedlings 27.

Next, after the soil seedling 27 has been transplanted, when the opening / closing plate 39 swings in the direction of closing the opening 41, the pivot 40 rotates in the direction of arrow C in FIG. 4, and the engagement between the tooth 67 and the gear 66 is released. Then, the rod 58 moves downward by the spring 63 to the position shown in FIG. When the opening / closing plate 39 further swings, the return rod 68 attached to the opening / closing plate 39 pushes up the seedling support plate 53 against the elastic force of the spring, as shown in FIGS. Then, the latch claw 55 swings in the direction of the arrow D in FIG. 4, the convex curved surface 57 of the latch claw 55 pushes up the rod 58 via the convex curved surface 57, and the tip of the latch claw 55 is the rod 58. When the rod 58 exceeds the lowermost end, the rod 58 moves downward due to the elastic force of the spring 63, and the latch claw 55 and the rod 58 are engaged again as shown in FIG.

The soil-bearing seedlings 27 transplanted into the ridges 21 as described above are covered with soil by the soil-covering wheels 69, 70, 71 attached to the transplantation frame 3.

A gas burner 73 located in front of the transplantation cylinder 34 is attached to the transplantation frame 3 and moves up and down in conjunction with the transplantation cylinder 34. This gas burner 73 is provided with a so-called multi-film body for the ridges 21.
When covered with 74, the portion of the multi-membrane body 74 in the opening portion of the planting hole 46 is heated and opened prior to the opening of the planting hole 46.

8 and 9 relate to different embodiments, and the difference from the above embodiments is that the seedling support plate 53 is opened and closed by the solenoid 75. That is, the solenoid 75 is attached to the outer surface of the rear wall 38 of the transplantation cylinder 34, and the seedling support plate 53 is attached to the solenoid 75.
When the open / close plate 39 closes the opening 41, the solenoid 75 is in the OFF state, and the seedling support plate 53 is in the transplanting cylinder 34 and the soil seedling 27 is placed on the seedling support plate 53 as shown in FIG. There is. Then, when the opening / closing plate 39 opens the opening 41 as shown in FIG. 9, the upper end of the opening / closing plate 39 operates the limit switch 76, the solenoid 75 is turned on, and the seedling support plate 53 is moved from the transplantation cylinder 34 by the solenoid 75. The seedlings 27 are dropped backward (the pulling speed is such that the soil seedlings 27 can fall without tilting), and the soil seedlings 27 fall. When the opening / closing plate 39 closes the opening 41 again, the limit switch 76 is deactivated and the solenoid is closed.
75 is turned off, and the seedling support plate 53 is positioned inside the transplanted seedling 34 again by the elastic force of the spring (not shown) in the solenoid 75.

10 and 11 relate to a further different embodiment, the difference from the above embodiment is that the guide plate 50 forming the seedling accommodation space 51 is formed by a leaf spring and is connected to the opening / closing plate 39. . Further, the front-rear distance between the guide plate 50 and the rear wall 38 of the transplantation cylinder 34 is made smaller than the front-rear dimension of the soil portion 48 of the soil-grown seedling 27,
The lower end of the seedling accommodation space 51 is always open. As a result, when the opening / closing plate 39 closes the opening 41, the guide plate 50 and the rear wall 38 sandwich the soil portion 48 of the soil-grown seedling 27, and the opening / closing plate 39
When is rocked together with the guide plate 50 in the opening direction of the opening 41, the soil-grown seedlings 27 are released from the clamping and fall.

12 and 13 show a different structure of the connecting body 31, which is connected to the first parallel links 29 and 30.
Second member connected to the member 31a and the second parallel links 32 and 33
It is divided and formed with 31b. The two members 31a and 31b are allowed to swing relative to each other about the center of the connecting shaft 77, and the swinging is performed by the second
A bolt 79 is inserted through the long hole 78 of the member 31b and the through hole of the first member 31a, and a nut 80 is screwed into the bolt 79, so that both members 31a,
The 31b is clamped by the bolt 79 and the nut 80 so that it can be released. As a result, the connecting shaft 77 of both members 31a, 31b
When the relative angle of the center is changed, the second parallel links 32, 33
The tilt angle of the transplantation cylinder 34 connected to the rear end in the front-rear direction can be changed and adjusted, and the soil-grown seedlings 27 can be vertically dropped and transplanted even in an upward or downward slope field.

(Effects of the Invention) According to the present invention, the transplanting cylinder 34 is vertically inserted into the field to open the opening / closing plate 39, thereby pushing away the soil in the field to form the planting hole 46 in the field and opening the opening. Downward opening 41
In the case where the earthed seedlings 27 in the seedling accommodation space 51 are dropped and transplanted into the planting holes 46 through the four-sided wall 3 surrounding the seedling accommodation space 51.
Since 6,37,38,50 are fixed to the transplant cylinder main body 34, the opening / closing plate 39
The soil seedlings 27 can be held upright by the four-sided walls 37, 36, 38, 50 even when they are opened and closed.
Since the seedling support plate 53 that can prevent the fall of 27 and open and close the lower part of the seedling accommodation space 51 is provided separately from the opening and closing plate 39, the opening operation must be performed instantaneously to push away the soil in the field. In comparison with the opening / closing plate 39 that cannot be opened, the seedling support plate 53 can open and close below the seedling housing space 51, so that the opening operation can be performed instantaneously, and the opening / closing plate 39 and the seedling support plate have a simple structure.
It is possible to prevent the earthed seedlings 27 from being fallen down during the opening operation of 53, because the seedling support plate 53 is covered by the opening / closing plate 39 with respect to the soil of the field when the transplanting cylinder 34 is vertically inserted into the field. , It is possible to prevent the seedling support 53 that supports the lower part of the soil seedling 27 from being embedded in the soil in the field and prevent the soil from adhering to the seedling support 53, and the soil in the field is soiled seedling by the seedling support 53. It is possible to prevent the stable support of 27 from being impeded. Furthermore, since the seedling accommodation space 51 is provided in the upper part of the internal space formed by being surrounded by the transplant cylinder main body 35 and the opening / closing plate 39, it can be opened and closed. When the plate 39 is opened and the soil in the field is pushed away, the soil can be prevented from entering the seedling accommodation space 51, and the soil seedling 27 collapses due to the soil in the field entering the seedling accommodation space 51. Can be prevented.

[Brief description of drawings]

1 to 13 relate to an embodiment of the present invention, and FIGS. 1 and 2 are side cross-sectional views of an implanting tube in different states,
FIGS. 3 and 4 are side views of the transplantation cylinder in different states, FIG. 5 is a side view of the main part of the transplanter, FIG. 6 is the same side view, FIG. 7 is the same plan view, and FIG. FIG. 9 and FIG. 9 are side sectional views of an implanting cylinder according to different embodiments, FIG. 10 and FIG. 11 are side sectional views of an implanting cylinder according to yet another embodiment, and FIG. 12 is a side view of a connecting body. FIG. 13 is a front view of the same, and FIG. 14 is a side sectional view of an implanting tube according to a conventional example. 27… Soil seedlings, 34… Transplanting cylinders, 41… Opening, 48… Soil part, 49…
Seedling part.

 ─────────────────────────────────────────────────── --Continued from the front page (56) Reference JP 58-94304 (JP, A) JP 58-179403 (JP, A) JP 57-110108 (JP, A) JP 54- 15261 (JP, B2) Japanese Patent Sho 63-7724 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A transplanter for transplanting a soil-bearing seedling (27) from which a seedling portion (49) has sprouted from a soil portion (48) shaped into a fixed shape, which is upright. A transplantation cylinder (34) having a seedling accommodation space (51) for holding the posture therein is provided, and the transplantation cylinder (34) can be opened and closed by an opening / closing plate (39) attached to the transplantation cylinder body (35). The opening / closing plate (39) has a facing opening (41) and is adapted to be vertically inserted into a field.
Open to push away the soil in the field and plant holes in the field (46)
The seedling with soil (27) in the seedling accommodation space (51) passes through the opened downward opening (41) and forms the planting hole (46).
In the case where the transplanting container (34) is dropped and transplanted to the field, the opening and closing plate (39) prevents the soil in the field from entering the seedling storage space (51) when the transplanting cylinder (34) is vertically inserted into the field. The space (51) is provided in an upper part of an internal space formed by surrounding the transplanting cylinder main body (35) and the opening / closing plate (39), and the seedling accommodation space (51) is provided in the transplanting cylinder main body (35). ) Is surrounded by front, rear, left and right four-sided walls (36,37,38,50), which are separate from the four-sided walls (36,37,38,50) and the opening and closing plate (39). The seedling support plate (53) is attached to the transplantation tube main body (35) so as to open and close the lower part of the seedling accommodation space (51) in conjunction with the opening and closing plate (39). When the (34) is pushed vertically into the field, it is covered by the opening / closing plate (39) against the soil in the field. Seedling holding structure in transplanting cylinder.