JP3515909B2 - Implanting device of transplanter - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a planting device for a transplanter.

[0002]

2. Description of the Related Art As this type of transplanter, for example, the one described in Japanese Patent Laid-Open No. 10-4729 is known. This conventional transplanter has a seedling supply device for supplying pot seedlings, a seedling extraction device for extracting pot seedlings of the seedling supply device, and a planting device for receiving seedlings from the extraction device and planting them in a field. . The planting device includes a pair of front and rear openable and closable planting cups each having a lower end formed in a beak shape, an elevating device for moving the cups up and down, and an opening and closing device for opening and closing the cups. The seedlings in the cup are planted in the field by storing the transplanted seedlings in the cup at the closed and raised position, lowering the cup and piercing it in the field, and opening the cup to raise it. Met.

The opening / closing device is composed of a link mechanism which can be expanded and contracted by a spring, and opens and closes the cup according to the relationship between the length of the link and the moving distance of the cup.

[0004]

However, in the above-mentioned conventional opening / closing device using the link mechanism, the opening / closing timing of the planting cup is uniquely determined by the link length and the movement trajectory of the cup. It was difficult to set it arbitrarily. Therefore, an object of the present invention is to provide a planting device for a transplanter capable of arbitrarily setting the opening / closing timing and the opening of the planting cup.

[0005]

In order to achieve the above object, the present invention takes the following means. That is, according to the present invention, a pair of front and rear openable planting cups each having a beak-shaped lower end portion, an elevating device for vertically moving the cups with respect to the planting frame, and opening and closing the cups via a cam. An opening and closing device for storing the transplanted seedlings in the cup at a closed raised position of the cup, lowering the cup to pierce the field, and opening the cup to raise the cup In a transplanting device of a transplanter adapted to plant seedlings in a field, the planting cup receives the seedlings from above.
It is installed in the lower outer peripheral area of the guide tube to open and close freely
In the device, the rear end is pivotally supported by the guide tube and the front end is a relay part.
A pair of upper and lower first parallel links pivotally supported by a member, and the first
Rotate on the planting frame to move the parallel link up and down
The opening / closing device has a crank arm freely provided.
The first link and the first link pivotally supported by the cup.
And a second link pivotally supported by the relay member,
The cam is provided on the crank arm and
The point is that it can freely contact the two links .

More specifically, the lifting device includes
The lower end is pivotally supported by the joint member, and the upper end is the planted frame.
It has a pair of front and rear second parallel links pivotally supported by .

By adopting the above structure, the opening / closing timing and the opening can be set to desired values by appropriately designing the cam shape. The first parallel links are preferably provided on both left and right sides of the guide cylinder.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the transplanter includes a traveling device 1 and a transplanting device 2 provided on the traveling device 1. The traveling device 1 has a vehicle body 3, and the vehicle body 3
An engine (not shown), a mission case 4 and the like are attached to the. The engine and mission case 4 are covered with a hood 5. A pair of left and right front wheel support shafts 6 are provided in a front portion of the vehicle body 3 in a laterally protruding manner.
Is provided with a front wheel arm 7, and a front wheel 8 is provided at the tip of the arm 7.
Is rotatably supported. Mission case 4
Rear wheel support shafts 9 are provided so as to extend in the left-right direction from both left and right sides, a transmission case 10 is attached to the support shafts 9, and a rear wheel 11 is supported at the tip of the transmission case 10. The traveling power transmission shaft 12 is inserted through the axial center of the rear wheel support shaft 9,
The power of the engine is transmitted from the transmission shaft 12 to the rear wheel 11 via the inside of the transmission case 10.

The transmission case 10 is vertically swingable by the operation of the lifting cylinder 13. The movement of the lifting cylinder 13 is transmitted to the front wheel support shaft 6 via the interlocking link 14, the front wheel arm 7 also swings in the vertical direction, and the heights of the front and rear wheels 8 and 11 and the vehicle body 3 are adjustable. . Further, the operation of the rolling cylinder 15 causes the left and right transmission cases 10 to swing in mutually opposite directions, and this swinging causes the left and right front wheel arms 7 to swing in mutually opposite directions via the interlocking link 14 to thereby cause the vehicle body to move. 3 can be rolled left and right. Further, the distance between the left and right front wheel arms 7 and the distance between the left and right transmission cases 10 are adjustable, and the wheel distance can be adjusted.

A machine frame 16 extending rearward is fixed to an upper portion of the rear portion of the mission case 4. A handle 17 is attached to the rear end of the machine frame 16. Further, a planting frame 18 is attached to the lower portion of the rear portion of the mission case 4 so as to extend rearward and to be vertically swingable. Then, the machine frame 16 and the planting frame 18
Further, the transplant device 2 is provided.

The transplant device 2 includes a ground leveling device 19 provided on the lower abdomen of the mission case 4, and the machine frame 16
Seedling supply device 20 provided over the rear part and the handle 17, seedling extraction device 21 provided on the machine frame 16 in front of the seedling supply device 20, and the planting under the seedling extraction device 21. A planting device 22 provided on the frame 18,
Behind the planting device 22, there is a squeezing device 23 and the like provided on the planting frame 18.

The ground leveling device 19 includes a mission case 4
Bracket 2 provided on the lower abdomen so as to be vertically swingable
4, the grounding roller 25 is rotatably supported by the bracket 24. The leveling roller 25 is configured to roll on the top surface of the ridge. The seedling supply device 20 is
It has a seedling table 26 that intermittently feeds a seedling tray containing a large number of pot seedlings (soiled seedlings) vertically and horizontally. The seedling placing table 26 is inclined so that the seedlings can be taken out from the seedling tray to the front so that the seedlings are raised toward the rear.

The seedling take-out device 21 takes out the soil-bearing seedlings one by one from the seedling tray and supplies them to the planting device 22, and includes a pair of left and right take-out claws 27 which are pierced into the root pot of the seedling. It comprises a pawl support device 28 for supporting the pawl 27 and a pawl drive device 29 for moving the pawl support device 28.
The pawl drive device 29 is fixed to the machine frame 16, and the power of the engine is transmitted from the transmission case 4 via the transmission shaft 30.

As shown in FIGS. 2 and 3, the planting device 22 is provided.
Has a pair of front and rear openable planting cups 31 each having a beak-like bottom end, an elevating device 32 for moving the cups 31 up and down, and an opening and closing device 33 for opening and closing the cups 31. When the cup 31 is in the closed and raised position, the cup 31
By accommodating the transplanted seedlings therein, lowering the cup 31 to pierce the field, and opening the cup 31 to raise it,
The seedlings in the cup 31 are planted in a field. The planting cup 31 includes a pair of front and rear pivotal support portions 3 in a lower outer peripheral area of a guide cylinder 34 that receives the seedling from above.
It is opened and closed via 5.

An inner cylinder 36 made of plastic as shown in FIG. 4 is concentrically fitted in the guide cylinder 34, and the inner cylinder 3
The lower part of 6 is narrowed to a small diameter, and slits 37 that are long in the vertical direction and open at the lower end and notches 38 that are open at the lower end are provided alternately in the circumferential direction. By providing such an inner cylinder 36 inside the guide cylinder 34, the seedlings with soil supplied from above can be prevented from falling and can be stably stored. Since the slit 37 and the notch 38 are provided in the lower part of the inner cylinder 36, the seedling soil is prevented from adhering to the inner surface of the guide cylinder 34.

The pivot portion 35 is fixed to the front and rear of the guide tube 34 by welding, and the shaft 39 is inserted into the pivot portion 35. The pair of front and rear planting cups 31 each include an upper base portion 40 and a lower beak portion 41.
0 is supported by the shaft 39. The base 40 is formed in a U shape in a plan view, and the front and rear bases 40 are
The left and right side walls are biased by a spring 42 so that they approach each other. On the left and right side walls of the one base 40,
The interlocking pin 43 is provided so as to project, and the side wall of the other base 40 is
An elongated hole 44 with which the pin 43 is engaged is formed. When one of the bases 40 rotates around the shaft 39 of the pivot 35, the engagement of the interlocking pin 43 and the long hole 44 causes the other base 40 to rotate around the shaft 39 of the pivot 35 as well. The both base portions 40 can be brought into and out of contact with each other.

As shown in FIG. 5, the beak portion 41 is formed in a flat beak shape, and is fixed to the lower ends of a pair of front and rear base portions 40 by bolts. Therefore, the beak portion 41 can be opened and closed in the front-rear direction by the movement of the base portion 40.
Referring back to FIGS. 2 and 3, the elevating device 32 includes a pair of upper and lower first parallel links 45 whose rear ends are pivotally supported by the guide tube 34, and pivots at the front ends of the first parallel links 45. The bracket 4 in which the relay member 46 supported and the upper end portion in which the lower end portion is pivotally supported by the relay member 46 are provided in the planting frame 18
7, a pair of front and rear second parallel links 48 pivotally supported, a crank arm 49 rotatably provided on the planting frame 18, and a crank pin connecting the crank arm 49 and the first parallel link 45. 50 and.

The pin 50 is provided on the crank arm 49.
Has a shaft portion 51 at an end portion on the opposite side to the shaft portion 51. The shaft portion 51 is supported by a bearing portion 52 provided on the planting frame 18, and a driven sprocket 53 is provided at an end portion of the shaft portion 51. ing. On the other hand, an output shaft 54 to which the power from the engine is transmitted is concentrically provided at the pivotal support portion between the front end of the planting frame 18 and the mission case 4, and a drive sprocket 55 is provided at the end portion of the output shaft 54. Is provided. The drive sprocket 55 and the driven sprocket 53
The spaces are linked by a chain 56. This transmission is covered with a chain case 57.

The crank pin 50 has a bearing portion 58 provided in the middle of the upper link of the first parallel link 45.
Has been inserted into. The opening / closing device 33 includes a first link 59 pivotally supported on an upper portion of the front base 40 of the pair of planting cups 31, and a first link 59 pivotally supported on the first link 59 and the relay member 46. Two links 60 and. The pivot portion of the second link 60 with the relay member 46 is the first parallel link 4
It is shared with 5 pivotal branches. A cam follower 61 is provided in the middle of the second link 60. on the other hand,
The crank pin 50 extends from the bearing portion 58 of the first parallel link 45, and the cam 62 is spline-coupled to the extending portion. The opening / closing device 33 is configured by contacting the cam 62 and the cam follower 61 so that they can come in and out of contact with each other.

Incidentally, the first and second parallel links 45, 4
Reference numerals 8 are provided on both left and right sides of the guide cylinder 34, and the inner ends of the left and right crank pins 50 are connected by a crank member 63. A brake disc 64 is provided on the other crankshaft portion 51 in place of the driven sprocket 53, and a brake arm 65 that fits into an outer peripheral recess of the brake disc 64 is provided on the planting frame 18. This braking device holds the planting cup 31 at its top dead center.

FIG. 6 shows the locus of movement of the planting cup 31 by the elevating device 32 and the locus of opening and closing of the planting cup 31 by the opening / closing device 33. That is, the upper locus shown in the same figure is the locus of the pivot portion at the rear part of the first parallel link 45, and the locus shown at the lower part is the locus of the lower end of the planting cup 31, of which the dashed-dotted line is the front side. The locus of the beak part 41 of No. 1 and the dotted line are the loci of the beak part 41 on the rear side.

FIG. 2 shows the position of the top dead center of the planting cup 31, FIG. 7 shows the position of the bottom dead center, and FIG.
The open final position of the planting cup 31 is shown. As is clear from these figures, the shape of the cam 62 is such that the cam follower 61 abuts at the bottom dead center to open the planting cup 31 and closes at the top dead center. It has been selected. The opening / closing timing and the opening can be arbitrarily designed by appropriately selecting the cam shape.

The planting device of the present invention is advantageous when used in a tobacco transplanter. That is, since the tobacco seedlings have large leaves, the planting cup must be upsized, but compared to the conventional cantilever lifting device, if the double-supported lifting device of the present invention is adopted, the planting cup will be stable and stable. Can be raised and lowered. It should be noted that the present invention is not limited to the one shown in the above-mentioned embodiment, and is also applied to a transplanter of a type towed by a tractor.

[0024]

According to the present invention, the opening / closing timing and the opening of the planting cup can be arbitrarily designed.

[Brief description of drawings]

FIG. 1 is a side view of a transplanter showing an embodiment of the present invention.

FIG. 2 is a side view of the planting device showing the top dead center of the planting cup.

FIG. 3 is a plan view of the planting device.

FIG. 4 is a perspective view of an inner cylinder.

FIG. 5 is a perspective view of a planting cup.

FIG. 6 is a locus diagram of a planting cup.

FIG. 7 is a side view of the planting device showing the bottom dead center of the planting cup.

FIG. 8 is a side view of the planting device showing an opening final position of the planting cup.

[Explanation of symbols]

31 Planting cup 32 Lifting device 33 Switchgear 34 Guide tube 33 planting cylinder 45 First parallel link 46 Relay member 48 Second parallel link 49 crank arm 50 crankpins 59 First Link 60 Second Link 62 cam

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-266708 (JP, A) JP-A-10-234209 (JP, A) JP-A-9-74927 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A01C 11/00-11/02 303

Claims (3)

(57) [Claims] 1. A pair of front and rear openable planting cups (31) each having a lower end formed into a beak shape, and the cups (31) being planted.
Elevating device for vertically moving against the biasing frame (18) (3
2) and an opening / closing device (33) for opening and closing the cup (31) via a cam (62).
The transplanted seedlings are stored in the cup at the closed raised position of 1),
In the transplanting device of a transplanting machine, the cup (31) is lowered to pierce the field, and the cup (31) is opened and raised to plant the seedling in the cup in the field . (31) receives the seedling from above
The lifting device (32) is provided at the lower outer periphery of the guide tube (34) so as to be openable and closable , and the rear end portion of the lifting device (32) has the guide tube (34).
The front end is pivotally supported by the relay member (46).
A pair of lower first parallel links (45) and the first parallel links
The planting frame (18) for moving the (45) up and down
And a crank arm (49) rotatably mounted on the
The opening / closing device (33) is pivotally supported on the cup (31).
The first link (59) that was opened and the first link (59) and the front
A second link (60) pivotally supported by the relay member (46)
And the cam (62) includes the crank arm (4).
9) is provided so that it can come into contact with the second link (60).
Planting apparatus transplanter, characterized in that there is a. 2. The lifting device (32) comprises the relay member.
The lower end is pivotally supported by (46) and the upper end is the planted flare.
A pair of front and rear second parallel links (4
8) The planting device for a transplanter according to claim 1, further comprising: 3. The planting device for a transplanter according to claim 2, wherein the first parallel links (45) are provided on both left and right sides of the guide cylinder.