JP2012075422A - Root cutting device and method for cutting root - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a root cutting device producible at a low cost, having good operability, and allowing to smoothly perform root cutting by low labor.SOLUTION: This root cutting device 10 includes a root cutting member 12 which is inserted into between a bottom plate lower surface of a flat boxy seedling pallet having an opened upper surface and storing many seedlings, and a ground surface where the seedling pallet is placed, and performs root cutting of seedlings by pull moving operation to one direction along the bottom plate lower surface of the seedling pallet, and a driving part 14 which pull moves and drives the root cutting member 12 along the bottom plate lower surface of the seedling pallet.

Description

  The present invention relates to a root cutting device and a root cutting method for cutting roots extended from the bottom surface of a bottom plate of a seedling pallet.

  For the rice grown in paddy fields, a transplanting cultivation method is used in which seedlings of a certain size are grown in advance from seed pods and then transplanted to paddy fields. In many cases, for example, a seedling box having many holes for draining is used in the bottom plate, and the seedling management is performed by arranging a large number of seedling boxes in a line on the ground. In recent years, a vinyl sheet having a large number of small holes may be laid on the ground on the ground on which the seedling box is placed. However, the roots grew as the seedlings grew in the nursery box, but the roots came out of the holes in the bottom plate of the nursery box and stuck to the ground. Therefore, when transplanting seedlings into paddy fields, it is necessary to forcibly remove the seedling box from the ground. In this peeling operation of the seedling box, the operator pulls the seedling box for each seedling box. It took a lot of effort to peel off, and it was carried out in a crouched posture, and the nursery boxes were placed in close proximity to each other, so it was hard work. Furthermore, since it is necessary to carry out a large number of seedling boxes according to the paddy field area, a lot of manpower is required and the working time is long. Furthermore, if the nursery box is forcibly peeled off, the nursery box may be broken or the seedlings for transplanting may be destroyed, resulting in problems such as deterioration of seedling quality. I was supposed to.

  On the other hand, for example, Patent Literature 1 proposes a technique for a seedling box that can be easily rooted. In the seedling box of Patent Document 1, a seedling receiving box whose one side is open with a rectangular bottom shape in plan view, and an open seedling that is inserted into the seedling receiving box so that it can be pulled out in the horizontal direction from the open part. A plurality of small holes are formed at the same pitch in the seedling receiving box and the seedling drawer shelf, respectively. Then, when the seedling drawer shelf is slid and pulled out, the roots automatically stretched by shifting the small holes between the seedling receiving box and the seedling drawer shelf.

JP 2000-41498 A

  However, since the seedling box of Patent Document 1 has a special structure composed of a seedling receiving box and a seedling drawer shelf, the box structure is complicated and extremely expensive compared to a conventional seedling box. . For this reason, farmers have to prepare a large number of new seedlings separately from the existing nursery boxes, which has a problem that the purchase cost becomes large. Furthermore, cleaning after use and other maintenance have been complicated. Further, when pulling out the seedling drawer shelf from the seedling receiving box and rooting it, it is necessary for the worker to bend down, so that labor is required and workability is poor. Therefore, it has been desired to develop a technique for easily performing root cutting without using a nursery box having a special structure.

  The present invention has been made in view of the above-described conventional problems, and one object thereof is to provide a root cutting device that can be manufactured at low cost, has good workability, and can perform root cutting smoothly with low labor. is there.

  In order to solve the above-mentioned problem, the present invention is inserted into a seedling pallet inserted between a bottom plate bottom surface of a flat box type seedling pallet 100 and a ground G on which the seedling pallet is placed with an upper surface opening accommodating a large number of seedlings P. A root cutting member 12 that performs root cutting of the seedling by a pulling movement operation in one direction along the bottom surface of the bottom plate 100, a drive unit 14 that pulls and drives the root cutting member 12 along the bottom surface of the bottom plate of the seedling pallet 100, It comprises the root cutting device 10 containing. In the root cutting device 10 of the present invention, a seedling pallet having a special structure is not required, and root cutting can be performed on a well-known seedling pallet. In addition, it is possible to effectively root the seedling pallet installed on the ground on which the sheet having a large number of small holes is laid. Moreover, the structure which performs root cutting about one seedling pallet by one pulling operation drive of a root cutting member may be sufficient, or it may perform root cutting about several seedling pallets by one pulling operation drive of a root cutting member. It may be configured. Further, the root cutting member 12 may be configured to be detachable and replaceable. The drive unit 14 may be a human drive structure or a power drive structure. As a driving | running | working part at the time of carrying out the motive power drive of the drive part 14, it is good also as a structure which can utilize the motive power of agricultural machines, such as a motor, an engine, and other motive powers, such as electricity and hydraulic pressure, or a tractor.

  In addition, the drive unit 14 is connected to the root cutting member 12 so that the gripping unit 16 provided at a position separated from the root cutting member 12 by a length equivalent to a smooth manpower work length or the root cutting member 12 of the seedling pallet 100 is provided. It is good also as comprising the drive mechanism 50 with a drive part which pulls and drives in one direction along the bottom plate lower surface.

  The driving unit 14 is a frame 18 that is connected to the gripping unit 16 or the driving mechanism 50 with the driving unit and supports the root cutting member, and moves the root cutting member 12 along the bottom plate bottom surface of the seedling pallet 100. It is good also as including the frame 18 in which the passage space | gap 20 which allows the seedling pallet 100 to pass inside was formed in the inside.

  The frame 18 includes a vertical frame portion 22 that is spaced apart from each other, and one or a plurality of reinforcing portions (24) that connect the vertical frame portions 22 at an intermediate position between the root cutting member 12 and the grip portion 16. It is good also as including.

  In addition, the root cutting member 12 is directed to the front end side of the vertical frame portion 22 arranged with a separation width corresponding to the length of one side of the seedling pallet 100 in a direction crossing the pulling movement operation direction of the root cutting member 12. It is good also as consisting of the straight member (38, 40, 42) stretched | straightened. The straight member may be constituted by, for example, a line body 38 such as a wire, a thin and thick belt-like body 40 having a certain width, and a blade body 42 having a blade edge formed on one side.

  Moreover, even if the front-end | tip part which supports the root cutting member 12 of the vertical frame part 22 is formed so that the width | variety of the direction orthogonal to the moving direction D of a root cutting member may become narrower than the vertical frame part main body side. Good.

  Further, the frame 18 includes a sled portion 28 in which a tip portion that contacts the ground when the root cutting member 12 is pulled and moved along the bottom surface of the bottom plate of the seedling pallet 100 is formed in an arc shape in a side view. Also good.

  Furthermore, the present invention inserts a root cutting member 12 between the bottom plate bottom surface of the flat box-shaped seedling pallet 100 and the ground G on which the seedling pallet 100 is placed at the upper surface opening accommodating a large number of seedlings P, The cutting member 12 is constituted by a root cutting method characterized in that the seedling is rooted by pulling and moving in one direction (D) along the bottom surface of the bottom plate of the seedling pallet 100. In this root cutting method, for example, it may be configured to perform root cutting on one seedling pallet with one driving operation of the root cutting member, or a plurality of seedling pallets with one driving operation of the root cutting member. It may be configured to perform root cutting.

  According to the root cutting device of the present invention, an upper surface opening that accommodates a large number of seedlings is inserted between the bottom plate bottom surface of the flat box type seedling pallet and the ground on which the seedling pallet is placed, on the bottom plate bottom surface of the seedling pallet. The seedling pallet includes a root cutting member that performs root cutting of the seedling by a pulling movement operation in one direction along with a driving unit that pulls and drives the root cutting member along the bottom surface of the bottom plate of the seedling palette. The roots coming out from the bottom of the bottom plate can be rooted smoothly and reliably, with low labor and in a short time, and is highly practical. Furthermore, it can be manufactured at low cost. Also, the seedling palette is not broken or the seedling is not damaged.

  In addition, the drive unit is connected to the root cutting member and is provided at a position separated from the root cutting member by a length that is about the length of a smooth manpower operation, or the root cutting member is placed along the bottom plate bottom surface of the seedling pallet. In the case of the grip portion, the operator can easily root with an easy standing posture and with low labor by using the driving mechanism with the driving portion that pulls and drives in the direction. Further, even in the case of the structure of the drive mechanism, almost no labor is required for root cutting, and root cutting can be performed easily.

  The drive unit is a frame that is connected to a drive mechanism with a gripping unit or a driving unit and supports the root cutting member, and when the root cutting member is pulled and moved along the bottom surface of the bottom plate of the seedling palette, By including a frame body in which a passage gap is formed to pass through, the root cutting operation can be performed easily and smoothly without damaging the seedling pallet or the seedling. Further, the strength of the apparatus can be maintained high, and it can be manufactured at a low cost with a simple configuration.

  In addition, the frame body includes a vertical frame portion that is spaced apart from each other, and one or a plurality of reinforcing portions that connect the vertical frame portions at an intermediate position between the root cutting member and the grip portion. The structure of the frame can be manufactured with high strength.

  In addition, the root cutting member is arranged in a straight line on the front end side of the vertical frame portion arranged with a separation width corresponding to the length of one side of the seedling pallet, in a direction crossing the pulling movement direction of the root cutting member. By adopting a configuration composed of stretched straight members, a root cutting member capable of reliably performing root cutting can be specifically realized with a simple configuration.

  In addition, the tip part supporting the root cutting member of the vertical frame part is configured so that the width in the direction orthogonal to the moving direction of the root cutting member is narrower than the vertical frame part main body side, When performing root cutting of a plurality of seedling pallets arranged on the ground, the frame body is unlikely to interfere with adjacent seedling pallets, and the root cutting work can be performed reliably and smoothly.

  Further, the frame body includes a sled-like portion in which a tip portion that contacts the ground when the root cutting member is pulled and moved along the bottom surface of the bottom plate of the seedling pallet is formed in an arc shape in a side view, The frame body can be smoothly pulled along the ground to cut the roots smoothly. In particular, when a resin sheet or the like for suppressing rooting is laid on the ground, the sheet is not damaged by the frame body, which is excellent in practicality.

  Furthermore, according to the root cutting method of the present invention, a root cutting member is inserted between the bottom plate bottom surface of the flat box type seedling pallet and the ground on which the seedling pallet is placed at the upper surface opening accommodating a large number of seedlings. By cutting and moving the cutting member in one direction along the bottom surface of the bottom plate of the seedling pallet, rooting of the seedling is performed, so that the root that has come out from the bottom surface of the bottom plate of the seedling pallet can be smoothly and reliably reduced with low labor and short. It can be efficiently rooted in time and is highly practical. Moreover, the seedling palette is not broken or the seedling is not damaged at the time of root cutting.

1 is a front view of a root cutting device according to a first embodiment of the present invention. It is a perspective explanatory view of the root cutting device of FIG. It is a partially expanded explanatory view of the front view of the root cutting device of FIG. FIG. 4 is a partially enlarged perspective view of FIG. 3. It is a partially expanded view of the side view of the root cutting device of FIG. It is operation | movement explanatory drawing of the root cutting apparatus and root cutting method of FIG. It is the schematic diagram which expanded and demonstrated the principal part of FIG. It is a partially expanded explanatory view of the front view of other embodiment of the root cutting apparatus of FIG. FIG. 9 is a partially enlarged perspective view of FIG. 8. It is a partially expanded explanatory view of the front view of other embodiment of the root cutting apparatus of FIG. It is a partially expanded perspective view of FIG. It is front explanatory drawing of the other form of the root cutting apparatus of FIG. It is front explanatory drawing of the other form of the root cutting apparatus of FIG. It is a partially expanded explanatory view of the side view of the other form of the root cutting device of FIG. It is a perspective view of the root cutting device which concerns on the 2nd Embodiment of this invention. It is a front view of the root cutting device of FIG. It is a perspective view of a seedling pallet. It is a perspective view in the state where seedling pallets were arranged and raised.

  Embodiments of a root cutting device and a root cutting method of the present invention will be described below with reference to the accompanying drawings. The root cutting device according to the present invention, for example, as shown in FIGS. 14 and 15, extends from the bottom surface of the bottom plate of a seedling pallet 100 on which rice seedlings and other plant seedlings are grown, and sticks to the ground. To perform the root cutting work. 1 to 7 show a first embodiment of a root cutting device and a root cutting method according to the present invention. In the present embodiment, as shown in FIGS. 1 and 2, the root cutting device 10 includes a root cutting member 12 and a drive unit 14.

  As the seedling pallet 100 to be rooted by the root cutting device 10 according to the present embodiment, for example, a case of growing rice seedlings will be described. In this embodiment, as shown in FIGS. 17 and 18, the seedling pallet 100 is formed in a bottomed box shape in which an opening 101 is formed on the upper surface side, and is a so-called seedling box that accommodates a large number of seedlings P. is there. The seedling pallet 100 is, for example, a rectangular shape in plan view with a length × width of 60 cm × 30 cm and a depth of about 3 cm. The seedling pallet 100 is formed with a shallow flat rectangular box shape having a depth of about 3 cm. ing. In the seedling pallet 100, for example, seed seeds are sprinkled on the contained soil to germinate, and as shown in FIG. 18, for example, the seedling pallets 100 are set in two rows with a gap Wd of about 1 to 3 cm, Furthermore, the seedling pallet rows of these two rows set are arranged in a plurality at intervals of about 1 m and the seedling management is performed. On the ground surface of the ground G on which the seedling pallet 100 is placed, for example, a vinyl sheet 200 provided with a large number of small holes in order to suppress, to some extent, roots extending from the bottom plate of the seedling pallet are settled on the ground. The synthetic resin sheet is laid. As shown in FIG. 7, when the root Pr grows simultaneously as the seedling P grows, the root Pr comes out of the box from the hole 102 of the bottom plate 103 of the seedling pallet, and further, a small hole in the vinyl sheet 200 Will stick to the ground.

  As shown in FIGS. 1, 2, and 7, the root cutting member 12 of the root cutting device 10 is between the bottom surface of the bottom plate 103 of the seedling pallet 100 and the ground G (vinyl sheet 200) on which the seedling pallet 100 is placed. Root cutting means for cutting roots of the seedling Pr by a pulling movement operation in one direction (D) along the bottom surface of the bottom plate 103 of the seedling pallet 100. The root cutting member 12 is supported by, for example, the drive unit 14 and is supported via a frame 18 described later in this embodiment. For example, the root cutting member 12 is inserted between the seedling pallet 100 and the ground G, and it is necessary to concentrate the pressure on the root Pr of the seedling in the smallest possible area or linear shape. It is formed thin. In the present embodiment, the root cutting member 12 is a straight member stretched in a direction intersecting the moving direction D. Specifically, the straight member is formed of a cable body 38 such as a metal wire stretched in a direction orthogonal to the moving direction D, for example. In the present embodiment, the stretching direction of the cable body 38 is set along the short side direction of the seedling pallet 100. The length of the cord body 38 in the stretching direction is set slightly longer (for example, about 1 to 2 cm) than the short side length of the seedling pallet 100. Furthermore, the pulling movement direction D of the root cutting member 12 is set in a direction along the long side direction of the seedling pallet 100. For example, the root cutting member 12 sets the pulling movement direction D in a direction along the short side direction of the seedling pallet 100, and the length of the straight member in the stretching direction corresponds to the long side direction of the seedling pallet 100. May be designed.

  The drive unit 14 is drive means or pulling movement means for pulling and driving the root cutting member 12 along the bottom surface of the bottom plate 103 of the seedling pallet 100. In the present embodiment, the drive unit 14 is configured to pull and drive the root cutting member 12 by human power, for example. As shown in FIGS. 1 and 2, the drive unit 14 includes, for example, a gripping part 16 that is provided apart from the root cutting member 12, and is further connected to the gripping part 16 to support the root cutting member 12. It has a body 18.

  In the present embodiment, the frame 18 is a support means for supporting the root cutting member 12. In the frame 18, when the root cutting member 12 is pulled and moved along the lower surface of the bottom plate of the seedling pallet 100, a passage gap 20 through which the seedling pallet 100 passes is formed inside the frame. That is, the frame body 18 has a frame configuration having a passage gap 20 adjacent to the supporting root cutting member 12. In this embodiment, the frame 18 is formed by assembling a metal tube member or a bowl-shaped member such as aluminum in a ladder frame shape, and the vertical frame portion 22 and the vertical frame portion that are spaced apart from each other. And a plurality of horizontal frame parts 24 connecting 22 to each other. In the present embodiment, the frame body 18 is formed in a vertically long rectangular frame shape as a whole, with one side on the lower side opened, and a root cutting member 12 made of a cord body 38 stretched on the lower end side serving as the open portion. is doing. The frame 18 realizes a structure having high strength.

  For example, the vertical frame portion 22 is connected to the root cutting member 12 at one end side and is provided with the gripping portion 16 at the other end side. The vertical frame portion 22 is formed with a length of about 70 cm to 1.2 m, for example, and sets a separation position from the root cutting member 12 of the grip portion 16 as will be described later, and can also function as a grip pattern. . The vertical frame portions 22 are arranged to face each other in parallel with a predetermined separation width, and are firmly connected via a plurality of horizontal frame portions 24. The separation width of the vertical frame portion 22, that is, the length of the horizontal frame portion 24 is set corresponding to the length of the short side of one seedling pallet 100, for example. In the present embodiment, for example, the length is set to about 31 to 32 cm, which is about 1 to 2 cm longer than the length of the short side of the seedling pallet 100. The horizontal frame portion 24 includes, for example, a first horizontal frame portion 24a that connects the other end portion of the vertical frame portion 22, and a second and second link that connects intermediate positions with a predetermined interval in the longitudinal direction of the vertical frame portion 22. 3 horizontal frame parts 24b and 24c. Basically, the horizontal frame portion 24 may connect only the vertical frame portions at one place. However, in the present embodiment, the horizontal frame portion 24 is at a plurality of positions and at an intermediate position (that is, a root position) of the plurality of vertical frame portions 22. At the intermediate position between the cutting member 12 and the gripping portion 16, the vertical frame portions 22 are connected to each other to constitute a reinforcing portion that reinforces the frame body 18. The third horizontal frame portion 24c is disposed at an intermediate position that is separated from the root cutting member 12 on one end side of the vertical frame portion 22 to some extent. As a result, a rectangular space surrounded by the two vertical frame portions 22, the third horizontal frame portion 24 c, and the root cutting member 12 becomes the passage gap 20 of the seedling pallet 100. The separation length between the root cutting member 12 and the third horizontal frame portion 24c is set such that, for example, when the root cutting member is moved along the bottom surface of the bottom plate of the seedling pallet, the horizontal frame portion 24c does not hit the seedling. It is preferable to set, and in this embodiment, for example, it is set to about 20 to 30 cm. That is, the horizontal frame portion serving as the reinforcing portion is set at a position that maintains the passage gap 20 of the seedling pallet between the root cutting member. The frame 18 is tilted by a predetermined angle θ (for example, about 30 to 50 degrees) with respect to the ground G at the time of a root cutting operation for pulling and moving the root cutting member in one direction (D). In the state where the root cutting member 12 of the part is disposed between the seedling pallet 100 and the ground G, the pulling operation is performed by a scraping-like operation via the gripping part 16. In addition, you may set arbitrarily the length of the vertical frame part of a frame, a separation width, the position of a horizontal frame part, the number, etc.

  As shown in FIG. 5, the longitudinal direction of the root cutting member 12, that is, the width in the direction orthogonal to the pulling operation direction D of the root cutting member 12 is formed at the distal end portion of the vertical frame portion 22 of the frame body 18. A narrow portion 26 is formed which is narrower than the side. The narrow width portion 26 is formed, for example, by crimping one end portion of the tube member that forms the vertical frame portion 22 and crushing it into a thin plate shape, or forming the flange member by any other process such as rolling, cutting, mold forming, or the like. Is done. Thus, by forming the front-end | tip part of the vertical frame part 22 narrowly, the seedling pallet adjacent to the seedling pallet 100 which performs root cutting does not become obstructive, and a root cutting member is reliably and smoothly attached to the lower surface of the bottom plate of the seedling pallet. You can set and perform rooting. As a result, when arranging a large number of seedling pallets on the ground (or the vinyl sheet 200), it is not necessary to make a large interval. In an aspect in which a large number of seedling pallets are arranged efficiently with a slight gap between them. Available and practical.

  As shown in FIGS. 4 and 5, the tip of the vertical frame portion 22, which is in contact with the ground G (or the vinyl sheet 200) when the root cutting member 12 is driven to pull, 28 is formed. As shown in FIG. 7, the frame 18 is configured to move the root cutting member 12 along the ground while being inclined with respect to the ground G. In the present embodiment, the sled portion 28 is, for example, It is formed at the corner of the front end portion of the vertical frame portion 22. The warped portion 28 is provided, for example, in the narrow width portion 26 of the vertical frame portion 22 and is formed in an arc shape when viewed from the side by directly machining the distal end portion of the vertical frame portion 22. Accordingly, when the root cutting member 12 is driven to pull, the pulling operation can be performed smoothly, and even when the vinyl sheet 200 is laid on the ground, the frame 18 can be used without breaking the vinyl sheet. It is easy to use. As shown in FIG. 14, the sled portion 28 is, for example, a tip portion where a synthetic resin arc-shaped member 29 formed in an arc shape is in contact with the ground G of the vertical frame portion 22 separately from the vertical frame portion. It is good also as fixing and comprising.

  As shown in FIGS. 3, 4, and 5, in the frame body 18, the support structure 30 that supports the root cutting member 12 including the strip body 38 is, for example, the strip body 38 on the distal end side of the vertical frame portion 22. A through hole 32 that passes through both ends of the ridge body 38 and that passes through both ends of the ridge body 38, and a locking member 34 that fixes the end of the ridge body 38 that has passed through the through hole to the vertical frame portion 22. Have. For example, as shown in FIGS. 5 and 7, the through-hole 32 has a sled shape so that when the frame body 18 is inclined with respect to the ground, the cord body 38 is positioned close to the ground. It is formed at a position close to the portion 28 side, that is, the grounding portion side of the vertical frame portion 22 with the ground. As shown in FIG. 3, both end portions of the strip body 38 that penetrates the through hole 32 are extended to the outside longer than the separation width of the vertical frame portion 22, and an extension portion 38 a of the strip body 38. Is bent in a substantially L shape toward the upper side at a position passing through the through-hole 32 and disposed along the vertical frame portion 22. Further, the end portion of the extension portion 38a of the striated body is penetrated from the through hole 33 provided at the intermediate position of the vertical frame portion 22 to the passage gap 20 side inside the frame, and the end portion is interposed via the locking member 34. And fixed to the vertical frame portion 22. That is, the locking member 34 is fixed at a position where the fixing position of the cable body 38 is shifted from the position of the through hole 32 of the vertical frame portion 22 to the upper side instead of the tip end portion of the vertical frame portion 22. The fixing position of the end portion of the cable body 38 by the locking member 34 is set to a position (for example, 5 to 10 cm or more) higher than the height of the seedling pallet 100, for example, at a non-interference position with the seedling pallet. It can be said that it is set. Yes. Accordingly, the locking member 34 for fixing the striated body has a structure that hardly interferes with the seedling pallet 100, and the root cutting member can be reliably and smoothly set on the bottom surface of the bottom plate of the seedling pallet to perform the root cutting operation. it can. The locking member 34 is detachably fixed to the end portion of the cable body 38, and the cable body 38 can be attached to and detached from the frame body 18. Therefore, when the cord body 38 is cut or deteriorated, the cord body 28 can be removed from the frame body 18 and replaced with a new one. Note that the fixing position of the end portion of the cable body 38 to the vertical frame portion 22 by the locking member 34 may be set to the position of the through hole on the distal end side of the vertical frame portion 22. At this time, it is less likely to interfere with the seedling pallet 100 when the width of the locking member is made thinner. Further, instead of the through hole 32, a structure in which a cutout or a bracket is formed in the vertical frame portion 22 may be used. Moreover, it is good also as a structure which can fix the edge part of the cable body 38 to the front end side of the vertical frame part 22, and cannot attach or detach.

  The gripping part 16 is a human-powered operation input means for an operator to grasp and operate with a hand, and is provided at a position separated from the root cutting member 12 by a length equivalent to a smooth manpower work length. In the present embodiment, for example, the gripping portion 16 is installed at a distance that allows the root cutting member 12 to be disposed on the ground G side without bending down while an operator such as an adult is standing. Since the gripping part 16 is connected to the frame body 18 configured as described above, for example, the gripping part 16 is installed at a position separated from the root cutting member 12 by about 70 cm to 1.2 m. As shown in FIGS. 2 and 6, the gripping portion 16 includes, for example, a rod-like handle bar 36 that is held by an operator. The handle rod 36 is provided, for example, so as to intersect the vertical frame portion 22 and the horizontal frame portion 24 of the frame body 18, and the root cutting member 12 is installed on the ground side so that the frame body 18 is directed to the ground G. In the inclined state, the direction of the grip axis of the handle bar 36 is set to be the vertical direction. Note that the gripping portion 16 may form a handle rod by bending a part of the vertical frame portion 22 in a predetermined direction, for example. Further, the gripping portion 16 is not limited to a structure in which the handle bar 36 is separately provided on the frame body, and for example, a part of the frame body 18 may be used as the gripping portion. For example, the first horizontal frame portion 24 a provided on the upper end side of the frame body 18 may be used as the grip portion 16. A part on the upper side of the vertical frame portion 22 may be used as the grip portion 16.

  Next, an operation and a root cutting method of the root cutting device 10 according to the present embodiment will be described. When performing root cutting of the root Pr extending from the bottom surface of the bottom plate of the seedling pallet 100 with the root cutting device 10 according to the present embodiment, as shown in FIG. 6 and FIG. 18 is operated, and the root cutting member 12 is inserted between the seedling pallet 100 and the ground from the short side end of the seedling pallet 100. And by pulling in the direction (D) along the long side of the seedling pallet 100 by pulling or scraping like the whole apparatus toward the operator side through the gripping part 16, The root cutting member 12 is pulled and driven along the bottom surface of the bottom plate of the seedling pallet. As shown in FIG. 7, root cutting is performed as the root cutting member is pulled. That is, in the root cutting method according to the present embodiment, the root cutting member 12 is disposed between the lower surface of the bottom plate 103 of the flat box-type seedling pallet 100 and the ground on which the seedling pallet 100 is placed with an upper surface opening accommodating a large number of seedlings. Is inserted, and the root cutting member 12 is pulled and moved in one direction along the bottom surface of the bottom plate of the seedling pallet 100 to perform root cutting of the seedling. As a result, root cutting from the seedling pallet can be easily performed in a short time, and at the same time, root cutting can be easily performed in a standing posture, and work can be performed in a short time with light labor. Moreover, the seedling pallet and the mat-shaped seedling accommodated in the seedling pallet are not broken. In addition, after the root cutting operation of the seedling pallet 100 is completed, the seedling pallet 100 can be easily carried from the ground, and the seedling detached from the seedling pallet is transplanted into a paddy field using a rice transplanter or the like.

  The configurations of the root cutting device and the drive unit are not limited to the above-described embodiment. For example, the straight member constituting the root cutting member 12 is not limited to the cable body 38. For example, as shown in FIGS. 8 and 9, the straight member is made of a material such as a synthetic resin or metal having a certain degree of hardness, and is formed of a belt-like body 40 that is thin and spreads in the moving direction D. May be. The support structure 30 of the belt-like body 40 to the frame body 18 includes, for example, a horizontally long through-hole 41 provided on the distal end side of the vertical frame portion 22 in substantially the same manner as the support structure of the rope body shown in FIG. The extended end portion 40a is passed through a locking member 43 made of a buckle or the like that is fixed at an intermediate position of the vertical frame portion 22, and is detachably / replaceably locked. For example, the belt-like body 40 is set to be inclined with respect to the longitudinal direction of the vertical frame member 22 so as to be horizontally oriented when the frame body 18 is inclined with respect to the ground. Further, the straight member may be constituted by a blade body 42 having a blade edge formed on one side as shown in FIGS. 10 and 11, for example. The blade surface of the blade body 42 is set so as to be inclined with respect to the longitudinal direction of the vertical frame member 22 so as to be horizontally oriented when the frame body 18 is inclined with respect to the ground. Further, as shown in FIG. 12, the drive unit 14 has a structure in which a vertical frame portion 22 and a reinforcing portion (horizontal frame portion 24) are assembled in a substantially U shape, a gripping portion 16, and a frame body. 18, that is, a long handle member 44 for separating the gripping portion 16 from the root cutting member 12. In FIG. 12, the gripping portion 16 is composed of, for example, a handle rod 36 connected to the long handle member 44 in a T shape. Further, as shown in FIG. 13, the drive unit 14 may be configured such that, for example, two root cutting members 12 are supported in parallel by a frame 18 so that two seedling pallets 100 can be rooted simultaneously. Good. Further, for example, the length of the frame 18 or the long handle member may be configured to be extendable and the structure may be such that the separation length between the root cutting member 12 and the grip portion 16 can be adjusted. Further, the configuration of the drive unit 14 including the gripping unit 16 and the frame 18 is not limited to the above-described configuration, and may be any other structure. For example, depending on the type of seedling, the size of the seedling pallet, and the like, the root cutting device Conditions such as the overall size, shape, and position of the gripping portion 16 and the like may be set.

  Next, a root cutting device and a root cutting method according to a second embodiment of the present invention will be described with reference to FIGS. 15 and 16. The same configurations and the same members as those of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 15 and FIG. 16, in this embodiment, the configuration of the drive unit 14 is different from that of the above-described embodiment, and the drive unit 14 moves the root cutting member 12 in one direction along the bottom plate bottom surface of the seedling pallet 100. And a driving mechanism 50 with a driving portion that drives the pulling operation. That is, the drive unit 14 has a mode in which the root cutting member 12 is pulled and driven not by human power drive as in the above-described embodiment but by power drive by the drive unit. In the present embodiment, the root cutting member 12 is composed of a straight member made of the cord body 38 and the like as described above.

  The drive mechanism 50 with the driving part includes, for example, a slider 52 that supports both ends of the root cutting member 12 and a rail 54 that guides the slider 52, and moves while synchronizing the slider 52 along the rail 54 by the driving part. Then, the root cutting member 12 is pulled in one direction. In the present embodiment, for example, the plurality of seedling pallets 100 are arranged side by side on a table 56 in which the ground G is set to a predetermined height, for example. The rail 54 is supported at a predetermined height via a support column 58 so that the root cutting member 12 is set at substantially the same height as the ground G on the table 56. Since it is such a structure, while rooting operation | movement can be carried out simultaneously or continuously about several seedling pallets, human power is unnecessary and rooting can be performed in a short time.

  15 and 16, the seedling pallet 100 is installed on the ground G raised to a predetermined height position by the stand 56, but the seedling pallet 100 is installed on the normal ground without providing the stand 56, etc. It is good also as a structure which installs a rail etc. along the ground. In addition, the drive unit 14 may include a frame body that is connected to the drive mechanism 50 and supports the root cutting member 12, and the frame body may be driven by the drive mechanism 50. Further, the drive mechanism 50 is driven to move by pulling the root cutting member 12 linearly along the bottom surface of the bottom plate of the seedling pallet, such as a small agricultural machine having a driving part or a structure for self-propelling the frame. Any structure of the driving device may be used as long as the structure is suitable.

  The root cutting device and the root cutting method of the present invention described above are not limited to the configurations of the above-described embodiments alone, and can be arbitrarily modified without departing from the essence of the present invention described in the claims. May be performed.

  The root cutting device of the present invention can provide, for example, a root cutting device that can be used effectively when growing seedlings of other crops or plants such as rice, vegetables, flowers, etc. on a seedling palette.

DESCRIPTION OF SYMBOLS 10 Root cutting device 12 Root cutting member 14 Drive part 16 Grasp part 18 Frame 20 Passing space 22 Vertical frame part 24 Horizontal frame part 28 Sled-like part 38 Rope body 40 Belt body 42 Blade body 50 Drive mechanism 100 Seedling pallet 101 Opening 102 hole 103 bottom plate P seedling G ground D pulling direction

Claims (8)

By a pulling movement operation in one direction along the bottom plate bottom surface of the seedling pallet inserted between the bottom plate bottom surface of the flat box type seedling pallet and the ground on which the seedling pallet is placed at the top opening containing a large number of seedlings A root cutting member for root cutting of the seedling,
A root cutting device including a drive unit that pulls and drives the root cutting member along the bottom surface of the bottom plate of the seedling pallet.   The drive unit is connected to the root cutting member and is provided at a position separated from the root cutting member by a length equivalent to the length of smooth manpower, or the root cutting member is arranged in one direction along the bottom surface of the bottom plate of the seedling pallet. The root cutting device according to claim 1, comprising a drive mechanism with a driving portion for pulling and driving.   The drive unit is a frame that is connected to a drive mechanism with a gripping unit or a driving unit and supports a root cutting member, and passes the seedling pallet inward when the root cutting member is pulled and moved along the bottom surface of the bottom plate of the seedling pallet. The root cutting device according to claim 2, further comprising a frame in which a passing gap is formed. The frame includes vertical frame portions that are spaced apart from each other,
4. The root cutting device according to claim 3, further comprising one or a plurality of reinforcing portions in which the vertical frame portions are connected to each other at an intermediate position between the root cutting member and the grip portion.   The root cutting member is stretched in a straight line on the front end side of the vertical frame portion arranged with a separation width corresponding to the length of one side of the seedling pallet in a direction crossing the pulling movement direction of the root cutting member. The root cutting device according to claim 4, wherein the root cutting device is made of a straight member.   5. The front end portion supporting the root cutting member of the vertical frame portion is formed so that the width in the direction orthogonal to the moving direction of the root cutting member is narrower than that of the vertical frame body side. Or the root cutting apparatus of 5.   The frame includes a sled-like portion in which a tip portion that comes into contact with the ground when the root cutting member is pulled and moved along the bottom surface of the bottom plate of the seedling pallet is formed in an arc shape in a side view. The root cutting device according to any one of claims 6 to 6. A root cutting member is inserted between the bottom plate bottom surface of the flat box type seedling pallet and the ground on which the seedling pallet is placed at the top opening containing a large number of seedlings, and the root cutting member is aligned with the bottom plate bottom surface of the seedling pallet. A root cutting method characterized by performing root cutting of a seedling by pulling and moving in one direction.

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