JP2005198595A - Transplanter for pot seedling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent rise of a pot seedling 4 only just plated in a field as a planting claw 2 is rotated and raised in a transplanter for pot seedlings equipped with rotary planting apparatus. <P>SOLUTION: The planting claw 2 is constituted of a pair of claw pieces oppositely arranged at prescribed intervals and a sliding claw 23 is slidably arranged in the space. A slotted hole 24 is formed in the sliding claw 23 and a pin 25 slidably fitted into the slotted hole 24 is attached to the planting claw 2. The rear end side of the sliding claw is extended and attached to a drum 7 so as to enable free reciprocating turn while centering a mounting shaft 26. The sliding claw is protruded to the front side at different heights to the planting claw and rotated together with the planting claw and reciprocated and slid in the length direction of the planting claw together with the rotation. When the planting claw is rotated and raised from nearly lowest end, the sliding claw is relatively slid to the top direction of the planting claw and fixed to nearly constant height on a root pot of pot seedlings only just planted and the upper part of the root pot is suppressed by the lower end of the sliding claw to prevent rise of the pot seedlings together with rise of the planting claw. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pot seedling transplanter for transplanting a pot seedling grown in a pot seedling box to a field, and more particularly to a pot seedling transplanter equipped with an improved rotary planting device.

Potted seedling transplanters equipped with a rotary planting device are used for transplanting rice seedlings and the like in rice planting or upland (see, for example, Patent Documents 1 to 4 below).
As shown in FIG. 8, this transplanter receives an endless transport belt 1 that is horizontally stretched in the left-right direction with respect to the traveling direction of the aircraft, and a planting claw 2 that rotates a pot seedling that is fed from its end edge. Then, a rotary planting device 3 for planting in the field is provided. A pair of endless transport belts 1 are installed side by side on the left and right sides, rotate in opposite directions, and receive seedling receiving arms (not shown) that receive a row of pot seedlings from a pot seedling box. For example, the pot seedling supplied from the following Patent Document 5) is transferred horizontally toward the edge. The rotary planting device 3 is arranged near the edge of each endless conveyor belt 1 (only one side is shown), and the rotating planting claw 2 sequentially receives the pot seedlings 4 sent from the edge. Send it down and plant it in the field.

JP-A-62-181711 Japanese Utility Model Publication 2-36332 Japanese Examined Patent Publication No. 4-75725 JP 7-312925 A Japanese Patent Publication No.57-18863 Japanese Patent Laid-Open No. 2002-17118

  The rotary planting device 3 includes a drive shaft 6 on which a sprocket 5 that is rotated by a chain (not shown) is fixed, a drum 7 that rotates as the drive shaft 6 rotates (drum lid 7a, drum bottom 7b), and one end of the drive shaft 6 The other end is fixed to the drum 7, and the drive plate 8 that transmits the rotation of the drive shaft 6 to the drum 7 is attached to the periphery of the drum lid 7 a via the attachment shaft 9, and reciprocates about the attachment shaft 9. The planting claw 2 that is rotatable, and a cam mechanism that is housed inside the drum 7 and that imparts the reciprocating rotation to the planting claw 2 are provided. The cam mechanism includes a groove cam 11 fixed inside the drum 7, a rotating lever 12 fixed to the end of the mounting shaft 9, a roller shaft 13 fixed to one end of the rotating lever 12, and a roller shaft 13. The cam roller 14 is rotatably mounted in the cam groove 11 a of the groove cam 11. The groove cam 11 is fixed to the support cylinder 15 at an eccentric position, and this support cylinder 15 is the outer periphery of the distal end portion of the cylindrical support member 16 fixed so as to surround the drive shaft 6 (a large number along the axial direction). It is fixed so that it does not rotate. Reference numeral 17 denotes a chain case, and 18 denotes a bearing for rotatably supporting the drum 7 with respect to the support member 16.

As shown in FIG. 7, the attachment shafts 9 of the four planting claws 2 installed on the periphery of the drum 7 are equidistant from the drive shaft 6 that is the center of the drum 7, and the shape of the rotary lever 12 and The mounting position of the cam roller 14 is the same for each planting claw 2, but the cam shaft 11 (and the drum 7) rotates because the cam groove 11a in which the cam roller 14 travels is eccentric and irregular with respect to the drive shaft 6. Then, as the planting claw 2 rotates around the rotation shaft, the planting claw 2 rotates (rotates) about the mounting shaft 9, and the length direction of the planting claw 2 and the drive shaft are rotated. The positional relationship of 6 changes. That is, when the planting claw 2 rotates and rises from the substantially lowermost position, the planting claw 2 rotates in the direction opposite to the rotation direction, and thereby rises while maintaining a substantially vertical posture. Thereafter, when the planting claw 2 moves toward the upper end position and then continues to rotate down, it rotates in the same direction as the rotation direction. Conversely, the eccentric position and the planar shape of the groove cam 11 are set so that the planting claw 2 reciprocates at that timing.
The planting claw 2 receives the pot seedling 4 when the planting claw 2 comes to a substantially horizontal position while rotating down, and further rotates down to embed the root pot part of the pot seedling in the ground of the field at the tip, and subsequently the planting claw 2 Will rotate up and planting will be completed. And when the planting claw 2 rotates and rises from the substantially lowermost position, the planting claw 2 rises while maintaining a substantially vertical posture, so that the planting claw 2 does not scrape the pot seedling planted in the field at the lowermost position backward. , Can escape upwards.

However, when sticky soil adheres to the tip of the planting claw 2 in a field or the like, the planting claw 2 and the root pot of the pot seedling stick together and the planting claw 2 comes out of the ground. The seedlings that had just been planted rose (raised) together, and planting postures were distorted, including planting irregularities and falling.
In order to solve this problem, in Patent Document 6, a pressure-reducing action part that is installed in a farm scene and moves up and down is provided in the vicinity of the left and right sides of the planting position, and the soil pressed from above by the pressure-reducing action part. The root pot of the pot seedling is prevented from being taken up. However, in this method, there is a risk of dragging down the pot seedling that has just been planted by the suppression unit when the aircraft sways from side to side.
The present invention has been made in order to solve such problems related to a pot seedling transplanter equipped with a conventional rotary planting apparatus.

  The present invention relates to a pot seedling transplanter provided with a rotary planting device for receiving a pot seedling with a rotating planting claw and then planting it in a farm field, wherein the rotary planting device has a stepped shape relative to the planting claw. Projecting forward, rotating with the planting claw, and reciprocatingly sliding along the length direction of the planting claw with the rotation, the sliding claw comprising the planting claw When rotating and rising from a substantially lowermost end, the planting is relatively slid in the tip direction of the planting claw and remains at a substantially constant height above the root pot of the pot seedling. Thereby, even if there is a pot seedling to be lifted as the planting claw rises, the lower end portion of the sliding claw suppresses the top of the root pot, so that the pot seedling is prevented from being lifted.

In the present invention, the pot seedling transplanter includes, for example, an endless transport belt stretched in a direction transverse to the advancing direction of the machine body, and the rotary planting device is fed out from an edge of the endless transport belt. The pot seedlings are received by rotating planting nails and then planted in the field.
A desirable rotary type planting device includes a drum that rotates as the drive shaft rotates, and the planting claw is attached to a peripheral edge of the drum via an attachment shaft, and can be reciprocally rotated about the attachment shaft. A cam mechanism for reciprocatingly rotating the planting claw is disposed in the drum, and when the planting claw rotates and rises from a substantially lowermost position with the rotation of the drum, the rotation direction is determined by the cam mechanism. It rotates in the opposite direction, and ascends while maintaining a substantially vertical posture.

  According to the present invention, even if there is a pot seedling that is going to be lifted as the planting nail rises, the lower end portion of the sliding nail stays at a substantially constant height and suppresses the top of the root pot. Lifting is prevented. In addition, this can be achieved by an extremely simple structural improvement, and there is no drawback as in the conventional example.

Hereinafter, with reference to FIGS. 1-6, the pot seedling transplanter which concerns on this invention is demonstrated. 1 to 6, the same parts as those in the pot seedling transplanter shown in FIGS.
This pot seedling transplanter differs from the conventional one shown in FIGS. 7 and 8 in the following points, and the others are basically the same.
(1) Shape of planting claw 2;
As shown in FIG. 4 in particular, the planting claw 2 is composed of a pair of claw pieces 2a and 2a arranged to face each other with a predetermined gap 21, and the front side near the tip of each claw piece 2a and 2a The concave portion 22 is configured to be inclined in the direction of the gap 21. While the planting claw 2 rotates and receives the pot seedling 4 at a substantially horizontal position, and further descends and embeds the root pot 4a of the pot seedling 4 in the ground of the field, the root pot 4a is planted claw 2 It is difficult to be displaced from side to side from the inside of the recess 22 and is held stably here. Therefore, the planting posture of the pot seedling 4 is prevented from being disturbed without the root pot portion 4a being detached from the planting claw 2 or causing a positional shift.
In FIG. 6, reference numeral 29 denotes a guide plate for guiding the root pot portion 4a of the pot seedling 4 (not shown in FIG. 5), and both sides of the tip of the planting claw 2 (portions contacting the root pot portion 4a). Are arranged along the rotation path.

(2) Addition of sliding claw 23;
As shown in FIGS. 1 and 4, the sliding claw 23 fits in the gap 21 of the planting claw 2, and the lower end of the sliding claw 2 is stepped forward with respect to the planting claw 2 (front side of the planting claw 2). It protrudes. A long hole 24 is formed in the sliding claw 23 along the length direction, and a pin 25 slidably fitted into the long hole 24 is fixed to the planting claw 2. An attachment shaft 26 is rotatably fitted to the rear end side extension of the sliding claw 23, and the attachment shaft 26 is fixed to the drum 7 (drum lid 7 a) on the rear side of the rotation from the attachment shaft 9 of the planting claw 2. ing.
The locus of rotation of the planting claw 2 accompanying the rotation of the drum 7 is the same as the conventional one. When the planting claw 2 rotates up from the substantially lowermost position, the planting claw 2 is centered on the mounting shaft 9. As a result, the planting claw 2 is raised while maintaining a substantially vertical posture. Thereafter, when the planting claw 2 moves toward the upper end position and then continues to rotate down, it rotates in the same direction as the rotation direction. FIG. 2 shows the trajectory at regular time intervals. On the other hand, since the planting claw 2 is moving forward at a constant speed by the advance of the aircraft, eventually, when the planting claw 2 rotates and rises from the substantially lower end position, the planting claw 2 maintains a vertical posture, as if Follow a trajectory that rises upward at the position. In addition, the locus | trajectory of such a planting nail | claw 2 is the same also in the prior art example shown in FIG.

As the drum 7 rotates, the sliding claw 23 rotates together with the planting claw 2. However, since the rear end side extension is supported on the drum 7 so as to be reciprocally rotatable about the mounting shaft 26, the sliding claw 23 slides substantially along the length direction of the planting claw 2, particularly when the planting claw 2 rotates upward from the substantially lowermost position relatively slides in the distal direction of the planting claw 2. Then, it remains at a substantially constant height above the root pot of the pot seedling. Conversely, the mounting shaft 26 is positioned on the drum 7 so that the sliding claw 23 follows such a locus. The locus of the sliding claw 23 is shown in FIG.
Further, FIG. 3 shows that the planting claw 2 and the sliding claw 23 follow the locus when the planting claw 2 ascends from the substantially lowermost position, and a forward moving component accompanying the forward movement of the aircraft is synthesized for a certain period of time. It is shown every other. As shown here, the planting claw 2 rises upward at substantially the same position in the front-rear direction, while the sliding claw 23 remains at a substantially constant height (sliding relatively in the tip direction of the planting claw 2). ) Since the lower end portion of the sliding claw 23 holds down the root pot of the pot seedling 4, the pot seedling 4 accompanying the raising of the planting claw 2 is prevented from being lifted.
In addition, since the sliding claw 23 slides up and down relatively with respect to the planting claw 2 in a state where the lower end protrudes to the front surface side of the planting claw 2, it adheres to the front side of the planting claw 2. The soil can be removed. As shown in this example, when the sliding claw 23 slides the largest relative to the tip direction of the planting claw 2 (see FIG. 3F), the tip of the sliding claw 23 is the tip of the planting claw 2. It is desirable to set the mounting shaft 26 and the like so as to follow a sliding locus that protrudes downward beyond.

(3) Addition of leaf support 27;
As shown in FIGS. 4 to 6, a pair of leaf support portions 27 protruding forward are fixed to the left and right sides of the planting claw 2 (not shown in FIGS. 1 to 3). The leaf support portion 27 is formed by fixing both ends of a bent bar to the claw pieces 2a and 2a of the planting claw 2, and particularly as shown in FIG. A concave shape is formed as a whole together with the moving claw 23, and the leaf portion 4b of the pot seedling 4 can be held therein. By holding the leaf part 4b of the pot seedling 4 with the leaf support part 27, the leaf part 4b of the pot seedling 4 is not greatly inclined with respect to the planting claw 2, and is not detached or displaced. It is prevented that the planting posture of the seedling 4 is disturbed.

(4) Structure of endless transport belt 1;
As shown in FIGS. 5 and 6, continuous ribs 28 are formed on the surface of the endless transport belt 1 along the rotational direction. On the endless conveyor belt 1, the leaf 4b of the pot seedling 4 is placed on the rib 28 and supported substantially horizontally. When the pot seedling 4 is fed out from the edge of the endless conveyor belt 1, the leaf 4b The rib 28 is fed away by the height of the rib 28. In the conventional endless transport belt, the pot seedling 4 has a shape in which the center of the leaf 4b is closer to the endless transport belt than the center of the root pot 4a (that is, the pot seedling 4 is inclined ... In an extreme case, it is as shown in FIG. 8), and as a result, the planting posture of the pot seedling 4 may be disturbed, but in the example of FIG. Since the pot seedling 4 is fed out substantially parallel to the edge of the endless transport belt 2 and the planting claw 2 receives the pot seedling 4, the planting claw 2 is provided. Therefore, the planting posture of the pot seedling 4 is prevented from being disturbed.
Due to the cooperative action of the endless transport belt 1 having the ribs 28 and the planting claws 2 having the leaf support portions 27, the certainty of preventing the disorder of the planting posture of the pot seedling 4 is further increased. As shown in FIG. 5, when the planting claw 2 receives the pot seedling 4, the leaf support portion 27 enters inward from the top portion of the rib 28, so that the leaf portion 4 b can be reliably held.

It is a figure explaining the structure of the principal part of the rotary type planting apparatus used for the transplanter for pot seedlings concerning this invention. It is a figure explaining the rotation locus | trajectory of the planting nail | claw and a sliding nail | claw. It is a figure explaining the movement and function of the planting claw and sliding claw in time series. It is the side view (a) explaining the structure of the planting nail | claw and a sliding nail | claw, its AA sectional drawing (b), and B arrow directional view (c). It is a partial cross section top view of the principal part (an endless conveyance belt and a rotary type planting apparatus) of the transplanter for pot seedlings concerning the present invention. It is the principal part side view. It is a figure explaining the structure of the principal part of the rotary type planting apparatus used for the conventional pot seedling transplanting machine. It is a partial cross section top view of the principal part (an endless conveyance belt and a rotary type planting apparatus) of the conventional pot seedling transplanter.

Explanation of symbols

1 Endless conveyor belt 2 Planting claw
2a Claw piece 3 Rotary planting device 4 Pot seedling 6 Drive shaft 7 Drum 8 Drive plate 9 Mounting shaft 11 Groove cam 12 Rotating lever 14 Cam roller 16 Support member 22 Recess of planting claw 23 Sliding claw 24 Long hole 25 Pin 26 Mounting shaft 27 Leaf support 28 Rib

Claims (8)

In a pot seedling transplanter equipped with a rotary planting device for receiving a pot seedling with a rotating planting claw and then planting it in a field, the rotary planting device is stepped forward with respect to the planting claw. A sliding claw that protrudes, rotates together with the planting claw, and reciprocates along the length of the planting claw with the rotation, the planting claw being substantially at the lowest end A pot seedling transplanting machine that slides relatively in the tip direction of the planting claws and stays at a substantially constant height above the pot seedling root pot when rotating. A rotary planting device that receives an endless transport belt stretched laterally with respect to the traveling direction of the machine body, and a potted claw that is fed from the end edge of the endless transport belt with a rotating planting claw, and then plants the plant in the field In the pot seedling transplanting machine, the rotary planting device protrudes forward in a stepped manner with respect to the planting nail, rotates together with the planting nail, and the length of the planting nail is accompanied with the rotation. A sliding claw that reciprocally slides along the vertical direction, and the sliding claw slides relatively in the tip direction of the planting claw when the planting claw rotates and rises from a substantially lowest end. A transplanter for pot seedlings characterized by staying at a substantially constant height above the root pot of the pot seedlings. The rotary planting device includes a drum that rotates as the drive shaft rotates, and the planting claw is attached to the periphery of the drum via an attachment shaft, and is reciprocally rotatable around the attachment shaft. A cam mechanism for reciprocatingly rotating the planting claw is disposed in the drum, and when the planting claw rotates and rises from a substantially lowermost position with the rotation of the drum, the rotation direction is determined by the cam mechanism. The pot seedling transplanting machine according to claim 1 or 2, wherein the pot seedling transplanting machine is configured to rotate in the reverse direction and thereby move up while maintaining a substantially vertical posture. The sliding claw is slidably supported by the planting claw, and a rear end side thereof is extended, and is supported on the drum so as to be able to reciprocate around the mounting shaft on the rear side of the rotation of the planting claw. The transplanter for pot seedlings according to claim 3, wherein the transplanter is a pot seedling transplanter. A long hole is formed in the sliding claw along the length direction of the planting claw, and a pin that is slidably fitted into the long hole is attached to the planting claw. The pot seedling transplanter according to claim 4, wherein the pot seedling transplanter is slidably supported by the planting claws. The planting claw comprises a pair of claw pieces arranged to face each other with a predetermined gap, and the sliding claw is slidably supported by the planting claw in the gap. Item 6. The pot seedling transplanter according to Item 4 or 5. The pot seedling transplanter according to claim 6, wherein a front side near the tip of each nail piece of the planting claw is inclined toward the gap to form a recess. The pot seedling transplanter according to any one of claims 1 to 7, further comprising a leaf support portion that protrudes forward on the left and right of the planting claws and has a concave shape as a whole.

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