JPH0353801A - Seedling transplanter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a method for attaching crop seedlings, such as straw grass or rye, to a tape and then winding up the tape to form a tape seedling, which is then unwound to remove the crop seedling. A seedling transplanter for planting, more specifically, a separating device is provided for separating crop seedlings at a predetermined position from a tape seedling formed by attaching a plurality of crop seedlings at a predetermined interval in the longitudinal direction of the tape, The crop seedlings separated by this separation device are dropped in a horizontal position, and the stems of the crop seedlings are inserted into the space between a pair of left and right rotating plates that rotate in a vertical position, and are held between the rotating plates. The present invention relates to a seedling transplanter equipped with a rotating disc-type planting mechanism that receives crop seedlings by holding the crop seedlings, rotates while holding the crop seedlings, releases the holding by the rotary plate on the planting surface, and plants the seedlings.

[Conventional technology]

In this type of seedling transplanter, the crop seedlings held between the pair of left and right rotating disks are moved to a predetermined position on the field surface each time the rotating disks rotate around the horizontal axis. Therefore, a method was adopted in which the grip on the crop seedlings was released and the crop seedlings were released and planted in a vertical position.

However, in this case, the crop seedlings are planted in such a way that they are released from the pair of left and right rotating discs and released onto the field, so their posture after planting is unstable. Some were unable to stand on their own.

Therefore, conventionally, as shown in Publication of Utility Model Publication No. 58-49062, a soil gathering device (referred to as a pressure wheel in the publication) was used to gather soil from both sides of crop seedlings after planting to make the crop seedlings self-supporting. It was set up.

[Problem to be solved by the invention]

It is true that this mulching tool can improve the self-sustainability of crop seedlings, but this mulching tool rotates when it comes into contact with the field surface, and a new pressing surface is constantly performing the mulching action.
In terms of form, the fixed plate-shaped earth-harvesting tool only performs the earth-harvesting action in the same position all the time, so it is still not sufficient to tighten the soil gathered against the roots of crop seedlings, and the crop seedlings cannot be completely removed. It had not yet reached the point where it became independent.

An object of the present invention is to provide a tool that can improve the self-sustainability of crop seedlings by making simple modifications to the soil gathering tool.

[Means to solve the problem]

The characteristic structure of the present invention is that a driving device is provided for a soil gathering device that gathers soil from both sides of the roots of the crop seedlings planted on the planting surface, and performs the soil gathering action every time the crop seedlings are planted. Its functions and effects are as follows.

[For production]

That is, the topping tool uses its own moving force to move earth to a predetermined position on the field surface, embanks the collected soil around the roots of the crop seedlings, and further tightens the embankment using its moving force. Therefore, the tightening action of the earth-clamping tool makes the embankment uniform and firm, allowing the crop seedlings to stand on their own.

〔Effect of the invention〕

By intermittent action of the soil gathering tool, it is possible to exert a tightening force on the gathered soil, which increases the supporting capacity of the soil itself compared to simply gathering soil, and further improves the independence of crop seedlings. can be done.

〔Example〕

The tape seedling transplanter (1) is once attached to the tape seedling planting device (not shown).
The tape seedlings created in step 1 are stored in the seedling storage case (2) in a zigzag fashion with the top and bottom overlapping, and the tape seedlings are fed out from there, and the crop seedlings (a) are separated from the tape (3) and planted. be.

The tape seedlings are small crop seedlings (a) that are manually divided from the mother plant against a single continuous tape (3).
They are formed by arranging the culms along the width direction of the tape (3) and at predetermined intervals in the longitudinal direction of the tape (3), and sewing them onto the tape (3) using a sewing machine (not shown). There are two rows of threads (10) to fasten the crop seedling (a) at two locations: the root and the tip of the stem.

As shown in Fig. 1, the tape seedlings stored in the seedling storage case (2) in a tapered manner are fed out downward via the guide roll (4) at the upper end of the seedling storage case (2), and are fed out through the separating device ( Droop down to 5). At this time, the crop seedling (a) is delivered in a fallen position along the lateral direction of the machine, and midway through, the crop seedling (a) is turned into a fallen position facing forward and backward.

The separation device (5) includes a roller (
6), a roller (7) that unwinds and winds up the sewing thread (IO), and a tape (3) from which the crop seedling (a) has been released at the separation site of the crop seedling (a), to the tape winding roller (6). The tape winding roller (6) and the yarn winding roller (7) each include a driving guide roller (8) for guiding the yarn (10) and a roller (9) for guiding the yarn (10) to the yarn winding roller (7). Equipped with slip devices (11) and (12). The guide outer peripheral surfaces of the drive guide roller (8) and the thread guide roller (9) are each covered with a sponge covering (8A).
(9A) are coated, and those coated bodies (8A
), '(9A) are almost in contact with both guide rollers (8
) and (9) are provided.

However, the drive guide roller (8) and the thread guide roller (9)
) may be provided with protrusions that engage with each other on the outer circumferential surfaces of the guides, and the crop seedlings attached to the tape may be captured and transported by the hooking force of these protrusions.

Further, the feeding speed of the tape (3) is determined by the rotation speed of the second drive guide roller (8), and the rotation speed of the tape take-up roller (6) is determined by the rotation speed of the second drive guide roller (8) via the slip device (11). It is set to rotate faster than roller (8). On the other hand, the rotation speed of the yarn take-up roller (7) is set higher than the rotation speed of the tape take-up roller (6) in consideration of the length of winding around the tape (3).

A planting mechanism (l3) is arranged below this separation device (5), and these separation devices (5) and the planting mechanism (
feed case (l4) that supplies driving force to
) is supported by an elevating link (15) at the rear end of the traveling machine (not shown), and the seedling storage case (2), separation device (5), and planting mechanism (13
), soil leveling float (6), etc. are connected to form a seedling transplanter.

As shown in FIGS. 1 and 2, the implantation mechanism (13
) includes a front-rear transmission case (17) extending rearward from the rear surface of the feed case (14), and a separation device disposed on both sides of the power take-off portion at the rear end of the transmission case (l7). (5) left and right elastic holding rotary plates (18A) and (18B) that receive the seedlings released from the crop seedlings (a), rotate while holding the stem end of the crop seedling (a), and release the seedlings onto the field surface; A first small-diameter roll-shaped push tool (19) that brings the clamping surfaces of the elastic clamping rotary plates (18A) and (18B) close to each other.
Then, the left and right elastic clamping rotary plates (1
8A) and (18B), and a trifurcated rod-shaped opening (20) that separates the clamping surfaces of the crop seedling (a), and a third rod-shaped opening (20) that holds the crop seedling (a) separated by the trifurcated rod-shaped opening (20) until it reaches the receiving and holding start position. It consists of two small-diameter roll-shaped pushers (21). Here, the left and right elastic clamping rotating plates (18A). ．． (18
B) is a thick rubber plate that receives and holds the tip of the stem of the crop seedling (a) released when the machine is tilted forward and backward, rotates downward, and the bundle of crop seedling (a) is vertically rotated. When the position is taken, the pushing action of the first small-diameter roll-shaped pushing tool (19) is released, and the crop seedling (a) is released and planted. At the position where the elastic holding rotary plates (18^), (18B) start holding the separated crop seedling (a), a catch (24) is provided to temporarily catch the root of the separated crop seedling (a). , the separated crop seedling (a) is once received in a tilted position facing forward and backward, and then the elastic clamping rotary plate (18/l) is attached. It is constructed so that the stem tip holding action in (18B) can be performed as expected.

In addition, (22) in the figure indicates the left and right elastic clamping rotary plates (18^
)． (18B) are a pair of left and right rod-shaped guides that guide rotating crop seedlings (a) onto the field surface. A groove cutter (2) is placed below this rod-shaped guide (22).
3) is provided, and a structure is adopted in which a groove is made with a furrow cutter (23) and the crop seedling (a) is planted in this groove.

Next, a brake mechanism (28) provided for the yarn (10) movement path from the yarn guide roller (9) to the yarn winding roller (7) will be explained. This brake mechanism (
28) is provided with a fixed cylinder (26) that rotates integrally with the rotating shaft (25) in the middle of the rotating shaft (25) which is pivotally supported in a cantilevered manner, and this fixed cylinder Clamping parts (27) and (27) are provided on both sides of (26) to clamp the Niki thread (10) and provide resistance. This clamping part (
27) is a dish-shaped first clamping body (27A) fixedly installed on both end surfaces of the fixed cylinder (26). (27A) and this first clamping body (27A), a dish-shaped second clamping body (27 mouth) biased by a spring in a direction approaching (27A), (
27B). And these two sets of clamping bodies (27A). Thread (10) between (27B),
It pinches (10) and provides a movement resistance force.

Therefore, even under conditions where the tension force fluctuates due to differences in the stems of the crop seedlings (a), a large tension force is not applied to the thread due to the braking force, and the tape seedling is fed out from the crop seedling separation site in the direction of tape seedling delivery. The thread (10) will not unravel on the upper side.

Also, a continuous thread (
10) has two rows, each thread (10) and (10)
sews the stem tip and stem base together, but since the stem tip is smaller than the stem base, if the thread winding mechanism (7) were to wind it under the same conditions, the stem tip would be sewn on the stem tip side. Since the thread (10) is pulled with a strong tension, the thread (10) is more than the tape (3) on the upper side in the tape seedling payout direction 10 from the crop seedling separation site. Therefore, both the threads (10) and (1
The thread winding rolls (7), (7) for winding the thread (0) are attached to the rotating shaft via separate slip devices (12), (12), and since the thread (10) at the base of the stem is long, fast winding is possible. Wind the thread (10) with the number of turns. This means that the left and right gripping bodies (278) in the brake mechanism (28),
The resistance force of (27B) is larger on the stem root side by the difference in speed, and the resistance force of the thread winding roll (7)
, (7), the slip force at the stem base is also larger in proportion to the above-mentioned resistance force. In any case, the brake mechanism (28) prevents excessive bow tension from being applied to the thread (10) separated from the tape (3).

Next, the soil gathering tool (29) will be explained. Figures 1 and 2
As shown in the drawings and FIG. 4, a transmission shaft (30) protrudes laterally from the rear end of the transmission case (17), and the elastic clamping rotary plate (184) is attached to the transmission shaft (30).
(18B) are attached so as to be rotatable together, and the transmission case (17) and the left and right transmission cases (31) that cover the left and right horizontal transmission shafts (30) are arranged in front and rear of each other so as to form an inverted mountain shape when viewed from the side. a pair of support frames (32^) extending downward in opposite directions and spaced apart from side to side;
(32B) is extended. This left and right support frame (
A horizontal rotation shaft (33) is installed across the lower ends of 32A) and (32B), and this rotation shaft (33)
3), the left and right soil gathering tools (29) are attached so that they can rotate together. A drive device (34) for this upper shifter (29) includes a drive rotating body (35) attached to the left-right transmission shaft (30) to rotate integrally therewith, and a drive device (34) that is pivotally supported by the left-right support frame (32A). The drive rotating body (35)
and an interlocking link (36) that is intermittently driven by engagement with the earther, and the other end of the interlocking link (36) is linked to the earthing tool (29), so that the earthing tool (29) is aligned with the planting operation. It is designed to prevent intermittent operation.

[Another Example] ■ As shown in Figures 5 and 6, crop seedlings (
a) A hole-shaped device (37) that forms a receiving hole for receiving and fixing the roots, and this receiving hole. . is made to swing downward by an electromagnetic solenoid (39). and crop seedlings (a) held between the elastic holding rotary plates (18A) and (18B).
A limit switch (40) is provided to detect when the limit switch (40) has been moved to a position where it is released onto the field, and the electromagnetic solenoid (39) is operated based on the detected operation of the limit switch (40). There is. Therefore, each time the tip I switch (40) is activated, the hole-shaped device (37) is activated together with the soil gathering device (29) to plant the next crop seedling (a). A hole is formed for this purpose.

(2) The earth-harvesting tool (29) may be one that opens and closes in the left-right direction to perform earth-harvesting action.

(13) As the separation device (5), a special tool for peeling off the crop seedling (a) from the tape (3) may be provided.

(2) Also, the tape seedling may have a configuration in which the crop seedling bundle (a) is held between two continuous tapes.

■ The planting mechanism (13) includes the rotating plate (18).
Seedlings (a) immediately before being released by the rotary plates (18A) and (18B) behind the seedling release positions in A) and (18B).
A positioning plate may be provided to receive the vertical position and regulate the position to the desired vertical position. This positioning plate does not necessarily have to be in a vertical position, but may be in a slightly inclined position.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the seedling transplanting machine according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is an overall rear view, Fig. 3 is a longitudinal cross-sectional view showing the brake mechanism, and Fig. 4 is an illustrative example of the soil gathering tool. FIG. 5 is a side view showing another embodiment of the mulching tool, and FIG. 6 is a plan view of FIG. 14. (3)...Tape, (5)...Separation device, (13)...Planting mechanism, (18A),
(18B)... Rotating plate, (29)...
Earth gathering tool, (34)... Drive device, (a)...
...Bundle of crop seedlings.

Claims (1)

[Scope of Claims] A separating device ( 5) is provided, and the crop seedling (a) separated by this separating device (5) is dropped in a horizontal position, and the stem part of this crop seedling (a) is
A pair of left and right rotating plates (18A) that rotate in a vertical position (
18B), and this rotary plate (18A), (
The rotating plates (18A) and (18B) rotate while holding the crop seedling (a), and place the crop seedling (18A) on the planting surface.
A seedling transplanter is provided with a rotating disk-type planting mechanism (13) that releases the clamping at 8B) and plants, the seedling transplanter being provided with a rotating disk-type planting mechanism (13) that releases the clamping at 8B) and plants the plant seedling (a) on both sides with respect to the root part of the crop seedling (a) planted on the planting surface. This seedling transplanting machine is provided with a drive device (34) that causes a soil gathering tool (29) that gathers soil from a surface to perform a soil gathering action every time the crop seedling (a) is planted.