JP2622195B2 - Rice transplanter seedling supply device - 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 feeder for a rice transplanter having a transport belt with a projection for feeding a seedling placed on a seedling holder toward a lower seedling planter by a predetermined amount. .

[0002]

2. Description of the Related Art In recent years, as a seedling supply device for a rice transplanter of this type, a seedling feeding device for feeding seedlings has been developed so that the feeding force of the feeding belt is transmitted to a large part of the lower surface of the floor of the seedlings in the longitudinal feeding direction. What has been provided has a long working range.

[0003]

By the way, the seedling placing surface of the seedling placing stand is formed as an inclined curved surface which is upwardly convex, and the upper side of the seedling supplying direction from the inflection position in the middle in the seedling supplying direction. It is known that the hill has a gentle slope, while the lower side in the seedling supply direction forms a steep slope. That is, in this type of seedling rest, it is intended that the entire seedling resting surface is elongated in the seedling feeding direction. While having a problem that a seedling near the seedling outlet may be crushed by applying a large seedling load to the seedling portion,
If the entire surface of the seedlings is gently sloped, there is a problem in that the front and rear lengths of the seedling planting device become large as a whole, and compactness cannot be achieved. A steep slope is used to solve both of the above problems. However, in the case where the conveying operation range is lengthened as described above and the conveying belt is provided so that the inflection position is in the middle of the conveying operation range, the conveying belt is exposed from the opening of the seedling rest. Even when wound and stretched, the inclination angle of the conveying action surface of the conveying belt did not match the inclination angle of the seedling placing surface on the upper side in the seedling supply direction and on the lower side in the seedling supply direction from the inflection position. . For this reason, the conveying action surface of the conveying belt is in a state where it is not exposed upward from the seedling placing surface near the inflection position in a side view, and near the inflection position, the protrusion of the conveying belt is on the lower surface of the seedling floor soil. It becomes difficult to be locked. Therefore, when the seedling shifts from the upper side of the inflection position to the lower side of the conveyance, the seedling is detached from the conveying operation surface of the conveyance belt near the inflection position, and the position of the seedling easily shifts. There was a problem that the action became uneven and the seedlings were torn off.

[0004] The present invention has been made in view of the above-mentioned circumstances, and even if the transport belt is provided such that the inflection position of the seedling placing surface is in the middle of the transport operation range of the transport belt, It is an object of the present invention to provide a seedling supply device of a rice transplanter in which a transfer action portion of the transfer action range can exert a certain transfer force with a protrusion of a transfer belt with respect to a lower portion of the floor soil.

[0005]

According to the present invention, there is provided a seedling supply apparatus for a rice transplanter according to the present invention, in which a seedling placed on a seedling holder is directed to a lower seedling planting mechanism in order to achieve the above object. A transfer belt with a protrusion that is fed out by a fixed amount is placed on the back of the seedling rest over the seedling movement good gawa and the seedling movement poor with the inflection position in the seedling moving direction on the seedling laying surface of the seedling nest in the middle. It is wound and stretched, and is exposed from the opening formed in the seedling rest, and the transport belt is more than a virtual plane connecting the upper edge of the opening and the lower edge of the seedling. A guide member for guiding the transport belt is provided so that the transport surface protrudes upward, and the seedlings move better than the inflection position, and the seedlings move lower along the respective seedling resting surfaces. It is a characteristic configuration. The operation and effect of this characteristic configuration are as follows.

[0006]

That is, the guide member protrudes the transport surface of the transport belt above a virtual plane connecting the upper edge of the opening for the transport belt and the lower edge of the seedling movement. Since the seedling moving skill and the seedling moving skill are located along the seedling mounting surface at the inflection position of the seedling mounting surface, the protrusion of the transport belt is placed on the seedling mounting surface even near the inflection position. The lower part of the floor of the placed seedlings is securely locked, and the transporting action of the seedlings from the transport belt works effectively within the transporting action range.

[0007]

Therefore, even if the seedling moving skill or the seedling moving skill at the inflection position of the seedling placing surface is known, the seedlings are unlikely to come off or displace from the conveying action surface of the conveying belt. Seedling movement at the inflection position Smooth transport of seedlings from good to poor can be achieved without causing seedling tearing or the like.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 3, a plurality of seedling planting apparatuses 4 are connected to the rear part of the riding type traveling body 1 via a link mechanism 3 which is swingably operated by a hydraulic cylinder 2 so as to be able to move up and down. The riding type rice transplanter is configured to transmit the power from the traveling machine body 1 to the seedling planting device 4.

The seedling planting device 4 includes a seedling planting mechanism 6 at a rear portion of a transmission case 5 serving also as a support frame, and a seedling stand for placing a plurality of pot seedlings W arranged side by side vertically and horizontally. 7 and a ground float 8 at the bottom. As shown in FIGS. 1 and 2, the seedling rest 7 for each row is placed at the stroke end of the seedling rest 7, which is reciprocally slid at a constant stroke by a drive mechanism (not shown) in the transmission case 5. A transfer belt 9 with a projection for feeding out the pot seedling W placed on the bottom of the seedling mounting mechanism 6 by one pot toward the lower seedling planting mechanism 6 is provided on the back of the seedling rest 7 with a pair of right and left over the upper roller 10a and the lower roller 10b. It is stretched and wound. Then, the conveyor belt 9 is exposed from an opening 11 formed in the seedling rest 7. That is, the conveying operation surface of the conveying belt 9 is exposed in a state where the conveying operation surface protrudes above an imaginary plane connecting the upper edge of the opening 11 on the upper side of the seedling movement and the lower edge of the lower side of the seedling moving. Further, the transport belt 9 is configured to be driven by rotational power transmitted from a drive system (not shown) from the transmission case 25 to the drive shaft 12 of the lower roller 10b.

As shown in FIG. 1, the seedling placing table 7 has a seedling placing surface A formed as an upwardly convex inclined curved surface in a side view, and the transport belt 9 has a seedling placing surface A. Is provided in a state in which the inflection position P is located in the middle of the conveying action range. The inflection position P is, as shown in FIG. 1, the surface A ₁ on which the seedlings move better than the inflection position P.
And the inclination angle at the seedling moving direction, a tilt angle and the position change discontinuously at seedling moving direction of the seedling surface A ₂ seedlings movement downstream side, and the inflection point P on boundary seedlings the seedling surface a ₁ of the moving upper side is gentle slope, and seedling surface a ₂ seedlings movement downstream side constitutes the steep slopes. Each of the pair of right and left conveyor belts 9 is, as shown in FIGS.
The transport surface is guided by the guide plate 13.
That is, the left and right guide plates 13 and 13 are welded to the support shaft 14 supported by a bracket (not shown) along the left-right direction on the back of the seedling rest 7 and the constricted portion 15 of the upper roller 10a. The upper surface of the seedling rest 7 is provided with an engaging portion 16 for engaging the
And good at I guide surface 13a along the _1, is configured by providing a state in which a said seedling moving downstream side of the seedling surface A ₂ poor Kanagawa guide surface 13b along was refracted at the inflection point P . FIG.
2 and 17, reference numeral 17 denotes a tension spring of the conveyor belt 9, and reference numeral 18 denotes a sensor for detecting the presence or absence of the pot seedling W.

With the above construction, the height of the transfer belt 9 protruding from the seedling placing surface A becomes substantially constant over the range of its transfer action by the guide plate 13, and particularly, in the vicinity of the inflection position P in the seedling placing stand 7. In this case, the transfer action surface follows the bent shape of the seedling placing surface A in a side view, so that the vertical transfer of the pot seedling W is smoothly performed at the bent position P.

FIG. 4 shows a seedling supply apparatus as another embodiment. The seedling supply device rotatably supports a guide roller 19 that guides the transport belt 9 at a constant protrusion amount from the opening 11 at a position corresponding to the inflection position P of the seedling mounting surface A in the seedling mounting table 7. Then, the conveying belt 9 is placed between the guide roller 19 and the upper roller 10a on the surface A _{1 of the} well-knotted seedling.
The first guide plate 20a to extend along the provided and is provided with a second guide plate 20b which along the conveyor belt 9 to the seedling surface A ₂ of the downstream side between the guide roller 19 and the lower side roller 10b . Here, the guide roller 19, the first guide plate 2
Oa and the second guide plate 20b constitute a guide member.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view showing a seedling supply device.

FIG. 2 is a rear view showing the seedling supply device.

FIG. 3 is an overall side view showing a riding type rice transplanter.

FIG. 4 is a side view showing a seedling supply device of another embodiment.

[Explanation of symbols]

 6 Seedling planting mechanism 7 Seedling stand 9 Conveyor belt 11 Opening 13 Guide member P Inflection position W Seedling

Claims (1)

(57) [Claims] 1. A seedling (W) placed on a seedling stand (7)
The feeding belt (9) with protrusions, which feeds out a predetermined amount toward the seedling planting mechanism (6) below, is bent at the inflection position in the seedling moving direction on the seedling resting surface (A) of the seedling rest (7). (P)
Is wound around the back of the seedling rest (7) over the seedling moving wells and the seedling moving wells in the middle, and is exposed from the opening (11) formed in the seedling rest (7). And the edge of the opening (11) on the upstream side of the seedling movement.
The transport belt is above the imaginary plane connecting the
In a state in which the transfer surface of the root (9) protrudes upward, the transfer is performed so as to be along the respective seedling-placed surfaces of the seedling moving skill and the seedling moving skill below the inflection position (P). belt
A seedling supply device for a rice transplanter provided with a guide member (13 ) for guiding (9) .