JP3860182B2 - Seedling cover sheet tensioning vehicle - Google Patents

Description

  The present invention relates to a vehicle for stretching a seedling coating sheet for covering a belt-like sheet on a seedling planted in a cocoon whose surface is covered with a multi-sheet, and in particular, a leaf stem is elongated long like a seedling. The present invention relates to a planting work vehicle for a seedling coating sheet suitable for coating a seedling having a considerable length up to the tip of the leaf.

  As shown in FIG. 9, the surface of the ridge 7 in the field is often covered with a multi-sheet 8 for the purpose of preventing soil drying and preventing weed growth. And the root of the seedling N is embedded and planted in the soil of the cocoon 7 from the planting hole 8a formed in the multi-sheet 8.

  By the way, until the roots of the seedlings N planted on the cocoons 7 are settled, it is necessary to manage the seedlings N so that they do not dry, and it is necessary to devise measures to make it difficult to evaporate moisture in the soil near the roots. That is, if the seedling leaves Na are exposed to direct sunlight or are exposed to wind, the amount of moisture emitted from the surface of the seedling leaves increases, and if the upper part of the planting hole 8a of the multi-sheet 8 is left open, the planting hole Sunlight irradiates 8a and the water in the soil easily evaporates. In particular, in the case where a single seedling N has a large number (for example, 6 to 8) of leaf stems Na and the area of each leaf is relatively large as in the case of a persimmon seedling, Since the amount of water divergence from each leaf Na increases, it is necessary to take measures against the water divergence from the leaf until the roots are established. In the present application, the leaf stem is a generic term for a stem extending from the root of a seedling and a leaf at the tip of the stem.

  Therefore, as a method of blocking direct sunlight and wind on the seedlings planted in the cocoon, conventionally, the upper part of the cocoon (on the multi-sheet 8) is covered with a belt-like sheet, and the belt-like shape is formed by embedding the belt-like sheet at intervals. As shown in FIG. 9, the sheet is fixed, or the seedlings N are planted on the seedlings N (multi-sheet 8) planted on the straw 7 one by one with the rice straw 9 and partially on the rice straw 9. The rice straw was fixed by embankment. It should be noted that the embankment on the belt-like sheet or rice straw is to prevent the belt-like sheet or rice straw from being blown by the wind. Become. In addition, this embedding work is performed manually by a worker one by one.

  However, as a means to block sunlight and wind against the seedlings planted in the cocoons, as described above, the seedlings to be planted are covered with a belt-like sheet and embanked on it, or the seedlings to be planted are covered with rice straw. For example, when embankment is performed on the bank, the working time is long and the posture of bending the waist continues for a long time, so that the degree of fatigue of the body increases.

  In addition, when the seedling planted in the persimmon is a persimmon seedling, as shown in FIG. 9, each seedling N has a large number (for example, 6 to 8) of leaf stems Na and each leaf stem Na is Each has a considerable length (for example, 20 to 25 cm to the tip of the leaf), and in the state where the seedling N is planted in the cocoon (planting hole 8a of the multi-sheet 8), each leaf stem Na is oriented in a random direction. ing. Therefore, the lengths L and L extending from the center of planting to the tip of each leaf stem Na and Na extending in the ridge width direction (left and right direction) are increased (L = 20 to 25 cm), and the upper part of the seedling N is covered. In this case, the coating width becomes large (L × 2 = 40 to 50 cm).

  In view of the above-described conventional problems, the present invention covers a covering sheet on a seedling planted on a cocoon whose surface is covered with a multi-sheet. ) The main purpose is to provide a seedling coating sheet tensioning vehicle that can be applied reliably and firmly, and the leaf stems of the seedlings planted in the cocoon are long (left and right) Another object is to make it possible to use a cover sheet having a relatively short width, even if the overhang width is large).

  The present invention has the following configuration as means for solving the above problems. The present invention is directed to a seedling covering sheet extending work vehicle for continuously covering a belt-like sheet on each seedling planted at a predetermined interval on a cocoon covered with a multi-sheet. In the following description, the seedling covering sheet stretching work vehicle of the present application is simply referred to as a sheet stretching work vehicle.

Invention of Claim 1 In the sheet stretching work vehicle of the invention of Claim 1 of the present application, a sheet roll is used which is formed by winding a belt-like sheet having an adhesive surface in the narrow range of both side edges of the belt-like sheet into a roll. . The width of the belt-like sheet of this sheet roll can be appropriately selected depending on the kind and size of the seedling (for example, a width of about 23 to 26 cm in the case of a persimmon seedling). Although the width | variety of the adhesion part of a strip | belt-shaped sheet both side edge part is not specifically limited, Each small width | variety may be about 1-2 cm. Each adhesive part may be one in which an adhesive is directly applied to both side edges of the belt-like sheet, or may be one in which a narrow adhesive tape is adhered to each side edge of the belt-like sheet. In this case, a part of each adhesive tape is stuck in a state of protruding outward from each side edge of the belt-like sheet. Further, the belt-like sheet of this sheet roll is preferably made of, for example, a water-degradable pulp, and has a property of breaking into pieces in a relatively short period of time and finally assimilating to soil. In addition, what formed the slit which faces a sheet | seat width direction with a predetermined space | interval (for example, 1-20 cm space | interval) in the sheet | seat length direction in the center part of this strip | belt-shaped sheet | seat is preferable.

  The seat extending work vehicle according to claim 1 includes a pair of left and right wheels arranged on the chassis frame at intervals across the eaves, and a roll support that supports the sheet roll so as to be unrolled in the vicinity of the center between both wheels. And a pressing device that presses the adhesive portions on both side edges of the belt-shaped sheet unrolled from the sheet roll against the upper surface of the multi-sheet.

  The seat extending work vehicle may be driven using power, but may be manually pushed by human power. In that case (hand-held type), it is recommended to attach a handle for pushing to the chassis frame.

  The distance between the left and right wheels is preferably adjustable according to the width of the heel. The outer width of the kite is generally about 45 to 60 cm (in this case, the interval between the central portions of the valleys on both sides of the kite is about 75 cm). In this case, the distance between the left and right wheels is 75 cm. For example, the width may be adjusted by about 10 cm, for example, in and out. The size of the wheel may be about 30 to 40 cm. These numerical values are not particularly limited, and can be appropriately changed in design.

  Any roll support can be used as long as it can unwind and support the sheet roll in a horizontal posture facing left and right. Further, the roll support can be replaced with a new sheet roll when the belt-like sheet of the sheet roll is used up. Note that the belt-like sheet of the sheet roll supported by the roll support is unwound so that the adhesive portions (adhesive surfaces) on both side edges are on the lower surface side.

  The pressing device has two rolls that can respectively press the vicinity of both side edges of the belt-shaped sheet unwound from the sheet roll downward (the upper surface of the multi-sheet covering the ridge). These two rolls press only the vicinity of each side edge of the belt-like sheet, and the width center portion of the belt-like sheet is in a non-pressed state. The interval between the two rolls is preferably adjustable according to the width of the belt-like sheet used. Further, it is preferable that the rolls are swung up and down in conjunction with each other so that the rolls can be in contact with each side edge portion of the belt-like sheet at the same time and at substantially the same pressure. The pressure contact force of each roll against the belt-like sheet (upper surface) can be adjusted by tilting the work vehicle back and forth with the ground contact portions of the left and right wheels as fulcrums (each roll portion moves up and down).

  By the way, some seedlings to be planted in a cocoon have leaf stems extending from the planting position depending on the type. For example, in the case of a persimmon seedling, there are 6 to 8 leaf stems in one seedling, and the length of each leaf stem is about 20 to 25 cm. In the state where the seedlings are planted in the cocoon (multi-sheet planting hole), each leaf stalk is randomly projected from the planting position to the periphery, and each stalk is projected from the center of the cocoon in the cocoon width direction (left-right direction). The length up to the tip of the leaf stem is increased (up to about 20 to 25 cm over the left and right sides of the pod). Therefore, to completely cover the upper part of the seedling with the belt-like sheet as it is, it is necessary to use a belt-like sheet having a wide width (for example, 50 cm width) that can cover it. When using, the inconvenience that a leaf stem sticks out from the side edge of a strip | belt-shaped sheet | seat, and the adhesion part of a sheet | seat both side edge part sticks on the protruding leaf stem.

  Therefore, the seat tensioning work vehicle according to the first aspect of the present invention is provided with a pair of left and right seedling gathering devices for bringing the leaf stems of the seedling to the center side of the cocoon between the two wheels. As each seedling gathering device, for example, a device in which the leaf stems projecting to the left and right of the cocoon with a brush roll (a pair of left and right) can be scraped to the heel center side, respectively. In this case, each brush roll is placed on the leaf stem while lightly contacting the upper surface of the multi-sheet at the upper part of the cocoon at a position where the central part of the cocoon is sandwiched and the interval between the brush rolls is approximately the same width as or slightly narrower than the width of the belt-like sheet. Rotate to the side that can be scraped to the center side. This seedling device is provided on the front side of the chassis frame (front side of the pressing device).

  The seat extending work vehicle of claim 1 is used as follows. The surface of the cocoon is covered with a multi-sheet, and seedlings are planted at the positions of the planting holes formed in the multi-sheet at a predetermined interval. On the other hand, in this sheet stretching work vehicle, a sheet roll is supported by a roll support. And this seat extending work vehicle is located in the attitude | position which a right-and-left wheel straddles a saddle in the start end part of the saddle which stretches a seat. And the front-end | tip part of the strip | belt-shaped sheet unwound from the sheet | seat roll is guide | induced to the vicinity of a pressing device (two rolls), and the adhesion part of the both-sides edge part lower surface of this strip | belt-shaped sheet is adhere | attached on a multisheet upper surface. At this time, the belt-like sheet corresponds to the position where the center portion of the width corresponds to the planting position of the seedling and the both side edges of the sheet are pressed by each roll of the pressing device. From this state, when the work vehicle is advanced while appropriately pressing each roll of the pressing device against both side edges of the belt-like sheet, the belt-like sheet is sequentially unwound from the sheet roll, and above the seedling in the center of the sheet. At the same time, both side edge portions of the sheet are pressed onto the multi-sheet by a pressing device (each roll), and the adhesive portions at both side edge portions of the sheet stick to the top surface of the multi-sheet.

  As described above, in this sheet stretching work vehicle, it is possible to stretch the belt-like sheets successively in the center of the kite by simply moving forward while straddling the kite. The stretched belt-like sheet is securely fixed because both side edges thereof are adhered to the upper surface of the multi-sheet with an adhesive (adhesive part).

  Further, in the seat stretching work vehicle according to claim 1, when the belt-like sheet is stretched on the cocoon, the leaf stems of the seedlings planted on the cocoon are raked up to the cocoon center side by the seedling gathering device, The seedlings brought to the center side of the cocoon can be sequentially covered with a belt-like sheet. Therefore, even if it is a seedling with a long leaf stem, each leaf stem can be coat | covered in the state put near to the width | variety of a strip | belt-shaped sheet | seat.

Invention of Claim 2 of the Present Invention The invention of claim 2 of the present application is the seat tension work vehicle of claim 1, wherein the pair of left and right seedling gathering devices include a brush roll for scraping the leaf stems of the seedlings toward the center side of the cocoon. And a roll that rotates in contact with the left and right wheels, and a power transmission member that transmits the rotational force of the roll to the brush roll. There are a pair of left and right brush rolls, rolls, and power transmission members. And in this seat extending work vehicle of Claim 2, when each wheel rotates, each brush roll is rotated in the direction which rakes a leaf stem to the heel center side via each roll and each power transmission member, respectively. I try to let them.

Invention of Claim 3 of the Invention The invention of claim 3 of the present application is the seat extending work vehicle according to claim 1 or 2, wherein the pressing device attaches two rolls to the rods, and each rod is attached to one shaft. Each shaft is fixed to one end so as to be inclined downward to the left and right, and the shaft is rotatably inserted into a bearing pipe attached to the chassis frame side in the front-rear direction.

  In the seat extending work vehicle according to the third aspect, when only one of the rolls of the pressing device is pressed against the top surface of the heel during work, the shaft easily rotates with respect to the bearing pipe (the two rolls are interlocked). The two rolls come into contact with the upper surface of the bowl evenly.

Advantageous Effects of Invention of Claim 1 The sheet stretching work vehicle of the present invention (the seedling covering sheet stretching work vehicle) is a belt-like sheet unrolled from a sheet roll supported by a roll support. The leading end of the belt-like sheet is guided to the vicinity of the pressing device, and the adhesive portions on the lower surface of both side edges of the belt-like sheet are adhered to the upper surface of the multi-sheet. At the same time, the pressure-sensitive adhesive portions on the lower surface of both side edges of the sheet can be adhered to the upper surface of the multi-sheet respectively by pressing both side edges of the sheet with a pressing device.

  Therefore, the seat tension work vehicle according to the first aspect of the present invention has an effect that the belt-like sheet can be stretched successively in the center of the collar by a simple operation of moving forward while straddling the collar. The stretched belt-like sheet has an effect that both side edge portions are adhered to the upper surface of the multi-sheet with an adhesive, so that it can be fixed securely.

  In addition, since the seat stretching work vehicle according to claim 1 includes a pair of left and right seedling gathering devices for bringing the leaf stems of the seedlings toward the center side of the cocoon between the two wheels, Even if it is a seedling that protrudes from the part), the work can be done while bringing its leaf stems to the center side of the cocoon with each seedling device. There is an effect that it can be completely covered, and a belt-like sheet having a relatively narrow width can be used.

Advantages of the Invention of Claim 2 The invention of claim 2 is the seat stretching work vehicle of claim 1, wherein a pair of left and right brush rolls is used as each seedling device, and each brush roll is The leaf stems are rotated in the direction of scraping toward the center of the cocoon by the rotational force from each roll rotating in contact with the wheel.

  Therefore, in addition to the effect of claim 1, the seat tensioning work vehicle of claim 2 can use the rotational force of both wheels as the power of the seedling device, and can also be used in a hand-operated work vehicle that does not use power. There is an effect that a seedling apparatus can be adopted.

The effect of the invention of claim 3 of the present application is that, in the seat extending work vehicle of claim 1 or 2, the two rolls are respectively attached to the rods as a pressing device, and each of the rods is attached to one rod. The shaft is fixed to one end of the shaft so as to be inclined downward to the left and right, and the shaft is rotatably inserted into a bearing pipe attached to the chassis frame side in the front-rear direction.

  In addition, in the sheet extending work vehicle according to claim 3, in addition to the effect of claim 1 or 2, both side edges of the belt-like sheet (each adhesive) There is an effect that the upper surface of the surface is always pressed evenly.

  An embodiment of the present application will be described with reference to FIGS. 1 to 8. A seeding covering sheet vehicle (hereinafter simply referred to as a sheet stretching work vehicle) according to this embodiment is shown in FIGS. 3 to 7. As described above, the belt-like sheet 61 is continuously covered on the seedlings N planted at a predetermined interval on the cocoon 7 covered with the multi-sheet 8.

  In this embodiment, a persimmon seedling is adopted as the seedling N. In the case of the persimmon seedling N, there are 6 to 8 leaf stems Na per seedling, and the length of each leaf stem Na is about 20 to 25 cm.

  On the other hand, the cocoons 7 for planting the seedlings N have a width of about 55 to 60 cm. A multi-sheet 8 is coated on the upper surface of the flange 7. The multi-sheet 8 is formed with a large number of planting holes 8a, 8a,. And, the seedlings N, N,... Are planted in the planting holes 8a, 8a, respectively. In the state where the seedlings N are planted, each leaf stem Na is randomly projected from the planting position to the periphery. Yes. Therefore, the length from the central part of the cocoon to the tip of each leaf stem Na protruding in the cocoon width direction (left and right direction) becomes long (extends about 20 to 25 cm at the maximum on the left and right sides of the cocoon).

  In the sheet extending work vehicle of this embodiment, a sheet roll 6 shown in FIG. 8 is used. This sheet roll 6 is obtained by winding a belt-like sheet 61 around a winding core, and has adhesive portions 62 and 62 in the narrow range on both side edges of the belt-like sheet 61, respectively. Each of the adhesive portions 62 and 62 is formed by sticking a narrow adhesive tape to each side edge of the belt-like sheet 61. In this case, each adhesive tape (reference numeral 62) is stuck in a state where a part thereof protrudes outward from each side edge of the belt-like sheet 61. In another embodiment, the adhesive portions 62 and 62 may be formed by directly applying an adhesive to both side edges of the belt-like sheet 61.

  The width of each of the adhesive portions 62, 62 (the width protruding from the edge of the belt-like sheet side) may be as small as about 1 to 2 cm. The belt-like sheet 61 may be wound either in a state where the adhesive portions 62, 62 are exposed on the outer surface side or in a state where the adhesive portions 62, 62 are hidden on the inner surface side of the sheet. When unwinding from 6 and actually used, the adhesive portions 62 and 62 are led out to face the lower surface side.

  In this embodiment, as the sheet roll 6, a belt-like sheet 61 having a width of about 23 to 26 cm and a roll diameter of about 15 cm at the maximum is used. The belt-like sheet 61 of the sheet roll 6 is preferably made of, for example, water-decomposable pulp, and breaks into pieces in a relatively short period of time, and finally has a property of assimilating to soil. Further, slits 63, 63... Facing in the sheet width direction are formed at a central portion of the belt-like sheet 61 with a predetermined interval (for example, an interval of 1 to 20 cm) in the sheet length direction.

  As shown in FIGS. 1 to 4, the seat stretching work vehicle of this embodiment unwinds a pair of left and right wheels 2, 2 disposed on a chassis frame 1 with a space across the flange 7, and a sheet roll 6. A roll support 3 that is freely supported, a pressing device 4 that presses the adhesive portions 62 and 62 on both side edges of the belt-like sheet 61 unwound from the sheet roll 6 against the upper surface of the multi-sheet 8, A pair of left and right seedling gathering devices 5 and 5 for scraping the leaf stem Na of the seedling N protruding to the side toward the center of the cocoon are provided. Further, the seat extending work vehicle is configured to be manually pushed by a manpower, and a handle bar 13 described later is attached to the rear of the chassis frame 1.

  The chassis frame 1 includes a horizontally long (about 80 to 90 cm) horizontal frame 11 and vertical frames 12 and 12 attached to the left and right ends of the horizontal frame 11. Each vertical frame 12, 12 is assembled to the horizontal frame 11 so that the distance can be adjusted, and the horizontal frame 11 is assembled to each vertical frame 12, 12 so that the height can be adjusted.

  Spare sheet rolls 6A and 6A can be held on the upper portions of the vertical frames 12 and 12, respectively.

  The left and right wheels 2, 2 are respectively attached to the outer surfaces of the vertical frames 12, 12. The left and right wheels 2 and 2 travel across the troughs on both sides of the kite across the kite 7, and the distance between the wheels 2 and 2 is adjusted according to the kite width. The outer width of the heel is generally about 45 to 60 cm (in this case, the distance between the central portions of the valleys on both sides of the heel is about 75 cm). In that case, the distance between the left and right wheels is about 75 cm. Adjust to. The size of each wheel 2 and 2 may be about 30 to 40 cm.

  The roll support 3 protrudes the left and right support arms 31, 31 at an interval at which the sheet roll 6 can be interposed on the front side (front side of the work vehicle) of the horizontal frame 11, and between the front ends of the support arms 31, 31. A shaft 32 that rotatably supports the sheet roll 6 is inserted and removed. A pipe through which the shaft 32 is inserted is coaxially attached to each inner surface side of the distal end portion of each support arm 31, 31. In order to mount the sheet roll 6, the sheet roll 6 is placed between the support arms 31, 31 with the shaft 32 removed, and the tip ends (shaft insertion pipes) of the both support arms 31, 31 and the sheet. The shaft 32 may be passed through the shaft core hole of the roll 6. When the belt-like sheet 61 of the sheet roll 6 mounted on the roll support 3 is used up, the shaft 32 can be removed and replaced with a new sheet roll (preliminary sheet roll 6A). In addition, springs 33 and 33 are provided between the support arms 31 and 31 and the side surfaces of the sheet roll 6 to hold the position of the sheet roll 6 at the center of the vehicle width.

  The pressing device 4 includes two rolls 45 and 45, and the rolls 45 and 45 are rotatably attached to the rods 44 and 44, respectively. Each of the rolls 45, 45 has a drum shape with a slightly constricted central portion. Each of the rods 44 and 44 has a length of about 20 to 25 cm so that the positions of the rolls 45 and 45 can be adjusted in the length direction of the rods 44 and 44. The position of the roll 45 can be adjusted by adjusting the positions of the two stoppers 46, 46 sandwiching the roll 45 in the axial direction of the rod 44. The tips of the rods 44 and 44 are fixed to a shaft 43 as will be described later, and the shaft 43 and the rods 44 and 44 with a roll 45 are integrated.

  The pressing device 4 is installed below a rear projecting frame 17 that projects rearward from the center of the rear surface side of the horizontal frame 11. That is, a mounting base 41 is fixed to the lower surface side of the rearward projecting frame 17, and the bearing pipe 42 is attached to the mounting base 41 in a posture facing front and rear. Further, a single shaft 43 is rotatably inserted into the bearing pipe 42. And the front-end | tip of each rod 44, 44 with the said roll 45 is being fixed to the rear-end part of this axis | shaft 43, respectively. As shown in an enlarged view in FIG. 7, the rods 44 and 44 are attached with an angle of about 120 ° about the shaft 43. Since the shaft 43 can freely rotate in the bearing pipe 42, in the natural state, the rods 44 and 44 are lowered by about 30 ° from the horizontal posture by the weight balance of the rolls 45 and 45, respectively. Inclined posture.

  As shown in FIG. 7, the mounting height of each roll 45, 45 of the pressing device 4 is such that when the work vehicle is placed in a horizontal posture across the heel 7, the lower surface of each roll 45 is the shoulder portion of the heel 7. It is set to be located near the top surface. The height of the ridge 7 is about 25 to 35 cm, and it is preferable to set the lower surfaces of the rolls 45 and 45 to have a height of about 30 cm, for example. This seat laying work vehicle is carried out in a four-point grounding state between the wheels 2 and 2 and the rolls 45 and 45 of the pressing device 4 during the actual seat laying work, but the wheels 2 and 2 are grounded. When the chassis frame 1 is tilted back and forth in this state (when a handle bar 13 described later is moved up and down), the height positions of the rolls 45 and 45 can be changed. Each of the rolls 45 and 45 presses the vicinity of each side edge of the belt-like sheet 61 stretched on the flange 7 (on the multi-sheet 8). ) Can adjust the left and right positions of the rolls 45, 45. The position of the roll 45 can be adjusted by adjusting the fixing position of each of the stoppers 46 and 46 described above.

  Further, in this pressing device 4, when only one of the rolls 45, 45 is in pressure contact with the upper surface of the flange during operation, the shaft 43 easily rotates with respect to the bearing pipe 42 (the both rolls 45, 45 are interlocked). The two rolls 45 and 45 come to contact the upper surface of the bowl evenly.

  Between the roll support 3 and the pressing device 4, a winding roller 10 for winding a belt-like sheet 61 unwound from the sheet roll 6 supported by the roll support 3 is installed. The back side of the adhesive portion 62 of the belt-like sheet 61 is wound around the winding roller 10. The winding roller 10 hardly functions in the example of use of this embodiment (the unrolled belt-like sheet 61 hardly contacts), but unwinds the belt-like sheet 61 from the upper surface side of the sheet roll 6 in FIG. In this case, the belt-like sheet 61 can be wound around the winding roller 10.

  By the way, in the persimmon seedling N, as described above, a single seedling has a large number (6 to 8) of leaf stems Na, Na,... And each leaf stem Na, Na,. (20-25cm), but when this seedling N is planted on the cocoon 7, each leaf stem Na, Na,... It protrudes greatly to the left and right sides of the flange 7 (see FIGS. 4 to 6 or 9). The left and right overhang width (for example, dimension L in FIG. 9) of the leaf stem Na is about 20 to 25 cm at the maximum from the seedling planting portion, and when the strip sheet 61 is covered as described later, the strip sheet A part of the tip side of leaf stem Na protrudes from both side edges of 61.

  Therefore, the seat stretching work vehicle has a pair of right and left seedling gathering devices 5 and 5 for scraping the leaf stem Na of the seedling (rice seedling) N planted on the basket 7 toward the center of the basket. . Each of the seedling gathering devices 5 and 5 is formed in a symmetrical structure.

  Each seedling device 5, 5 includes a swing frame 52 that is supported by a shaft 51 so as to be vertically swingable in a posture facing left and right on the front side of the lower end of each vertical frame 12, 12 of the chassis frame 1, and On the base end side (outer end side) of the moving frame 52, a roll 53 attached so as to be able to come into contact with and away from the tire inner surface of the wheel 2 and to rotate freely on the front end side (inner end side) of the swing frame 52. The attached brush roll 54, a power transmission member (consisting of each pulley and belt) 56 interposed between the roll 53 and the brush roll 54, and a grounding roll 55 attached to the front end surface (inner end surface) of the swing frame 52. And have.

  The left and right oscillating frames 52, 52 are installed in a lateral posture from the position close to the inner surface of each wheel 2, 2 toward the center near the front end of each wheel 2, 2. And each rocking | fluctuation frame 52,52 supports each base end side (outer end side) by the axis | shafts 51 and 51 which face each front and back, respectively, The front end side of each rocking | fluctuation frame 52,52 The (inner end side) can swing up and down. Each of the swing frames 52, 52 tends to tilt downward due to its own weight. However, as shown in FIG. 1 and FIG. 2 (shown by a solid line), each swing frame 57, 52 is tilted to a substantially horizontal posture. 57 is tense so as not to tilt further.

  As shown in FIGS. 5 and 6, the grounding rolls 55, 55 attached to the front end surfaces of the swing frames 52, 52 are provided on the upper surface of the eaves 7 (multi-seat 8) as shown in FIGS. The rocking frames 52 and 52 are inclined upward toward the center, respectively. In this case, the left and right seedling gathering devices 5 and 5 are displaced from the solid line illustrated state to the chain line illustrated state in FIG.

  The shaft 51 that supports the swing frames 52, 52 is eccentric from the shaft of the roll 53 that contacts the inner surface of the wheel 2. When the swing frames 52 and 52 are in a substantially horizontal posture state as shown in FIGS. 1 and 2 (shown by solid lines), the rolls 53 and 53 are slightly separated from the inner surfaces of the wheels 2 and 2. . In addition, as shown in FIGS. 5 and 6, when the grounding rolls 55 and 55 run on the eaves 7 and the swing frames 52 and 52 are inclined upward inward, the rolls 53 and 53 are The inner surfaces of the wheels 2 and 2 come into contact with each other.

  As shown in FIG. 6, the brush rolls 54, 54 are lightly in contact with the upper surface of the flange 7 (multi-sheet 8), with the swinging frames 52, 52 inclined upward inward, respectively. However, the spacing between the heel contact portions of each brush roll 54, 54 is set to be approximately equal to or slightly narrower than the left and right lengths of the sheet roll 6 supported by the roll support 3. The The brush rolls 54 and 54 are always rotated in conjunction with the rolls 53 and 53 by the power transmission members 56 and 56.

  In the seedling gathering devices 5 and 5 of this embodiment, as shown in FIGS. 1 and 2 (shown with solid lines), the rolls 53 and 53 are separated from the wheels 2 and 2 (each swing When the moving frame 52 is in a substantially horizontal posture), even if the wheels 2 and 2 are rotated, the seedling devices 5 and 5 do not operate wastefully. Further, each swing frame 52, 52 is inclined upward inward (each grounding roll 55, 55 rides on the flange 7), and each roll 53, 53 contacts the inner surface of the wheels 2, 2. In this state, when the work vehicle is moved forward, the wheels 2 and 2 are rotated in the forward direction (arrow direction), and the rolls 53 and 53 are rotated along the arrow direction. , 54 are rotated in the direction of the arrows. The rotation direction of each of the brush rolls 54, 54 is that the right brush roll 54 is rotated clockwise and the left brush roll 54 is rotated counterclockwise in FIG. It acts to scrape out the leaf stems Na, Na on each side toward the center of the cocoon. In addition, the central side scraping action of the leaf stem Na by each of the seedling gathering devices 5 and 5 is continuously performed as the seat extending work vehicle advances.

  The handle bar 13 is attached in a state where the rear frame is inclined upward from the center of the horizontal frame 11. The base end portion of the handle bar 13 is pivotally attached to the horizontal frame 11, and the handle bar 13 is tiltable up and down around the base end portion (pivot attachment portion). The handle bar 13 is maintained in a posture by connecting a position slightly away from the base end portion and a position closer to the rear end portion of the rear projecting frame 17 with a connecting bar 18. The rear projecting frame 17 is formed with a plurality of pin insertion holes in the front-rear direction, and the handle bar 13 is inclined by connecting the lower end portion of the connection bar 18 to the appropriate pin insertion hole. The angle (height of grips 15 and 16 described later) can be adjusted.

  On the distal end side of the handle bar 13, there are two left and right grip portions 15 and 16. The one grip portion 15 has a long lateral protrusion length, and the other grip portion 16 has a short lateral protrusion length. Further, the handle bar 13 connects the base end side 13 a and the tip end side 13 b with a joint portion 14. The joint portion 14 can be fixed in a state where the distal end side 13b of the handle bar 13 can be rotated around the axis, and the orientation of the long and short grip portions 15 and 16 is shown in FIG. 15 ', 16') can be changed left and right. Note that when the seat extending work vehicle is pushed by hand, the worker walks in either the left or right trough of the heel, but by adjusting so that the long grip portion 15 is located on the walking side, The parts 15 and 16 can be brought close to the front of the body.

  The seat extending work vehicle of this embodiment is used as follows. In addition, the surface of the cocoon 7 is covered with the multi-sheet 8, and the seedlings N, N,... Are planted at the positions of the planting holes 8a formed in the multi-sheet 8 with a predetermined interval. In the state where the seedlings N are planted, each leaf stem Na, Na,... Extends long from the planting part to the periphery like the seedling N at the left end of FIGS.

  On the other hand, the sheet roll 6 is supported by the roll support 3 in the sheet stretching work vehicle. Note that the sheet roll 6 used in this embodiment uses a belt-like sheet 61 wound in a state where the adhesive portions 62 and 62 are exposed on the outer surface side. In this case, the sheet roll 6 is shown in FIG. 3 or FIG. Thus, the belt-like sheet 61 is unwound from the lower surface side of the sheet roll 6 supported by the roll support 3.

  And the sheet | seat erection work vehicle of this embodiment is a belt-like sheet unrolled from the sheet roll 6 with the left and right wheels 2 and 2 positioned in a posture straddling the ridge 7 at the starting end portion of the ridge 7 for extending the sheet. The front end portion of 61 is guided to the vicinity of the pressing device 4 (two rolls 45, 45), and the adhesive portions 62, 62 on the lower surfaces of both side edges of the belt-like sheet 61 are adhered to the upper surface of the multi-sheet 8. At this time, the belt-like sheet 61 has a width center portion corresponding to the planting position of the seedling N, and both side edges of the sheet corresponding to positions pressed by the rolls 45 and 45 of the pressing device 4.

  Further, when the seat extending work vehicle is in a position straddling the heel 7, the grounding rolls 55 and 55 of the seedling gathering devices 5 and 5 run on the shoulder upper surface of the heel 7 (multi-seat 8), respectively. The swing frames 52 and 52 are tilted so that the rolls 53 and 53 are in contact with the inner surfaces of the left and right wheels 2 and 2, respectively.

  From this state, by gripping the grip portions 15 and 16, the inclination angle of the handle bar 13 is adjusted so that the rolls 45 and 45 of the pressing device 4 are in appropriate pressure contact with the upper surfaces of both side edges of the belt-like sheet 61. The work vehicle is advanced in the state. Then, at the front part position of the work vehicle, the respective rolls 54, 54 of the right and left seedling devices 5, 5 are rotated by the forward rotation of the wheels 2, 2 (see FIGS. 5 and 6), It acts so as to scrape the leaf stems Na, Na, which are overhanging to the left and right of the cocoon center, toward the cocoon center side. On the other hand, the belt-like sheet 61 is sequentially unwound from the sheet roll 6, and as shown in FIG. 7, the upper side of the seedling N that has been scraped to the cocoon center side is covered at the center of the sheet, and at the same time, both side edges of the sheet are pressed. Pressed by the rolls 45, 45 of the apparatus 4, the adhesive portions 62, 62 at both side edges of the sheet adhere to the upper surface of the multi-sheet 8.

  In this way, in this seat erection work vehicle, each leaf stem Na, which is greatly extended to the left and right of the center of the cocoon by each seedling device 5, 5 simply by moving forward (hand pushing) over the cocoon 7. Na can be raked toward the cocoon center side, and the strips 61 can be stretched successively in the center of the cocoon 7 in such a state that each leaf stem Na, Na is raked toward the cocoon center side. Therefore, even when the belt-like sheet 61 is easily stretched and the leaf stem Na is long like the seedling N, the whole leaf stem Na is used as the belt-like sheet 61 even when the leaf-like sheet Na is long. Can be completely accommodated within. Further, the stretched belt-like sheet 61 is securely fixed because both side edges thereof are adhered to the upper surface of the multi-sheet 8 by the adhesive portions 62 and 62. When the belt-like sheet 61 of the sheet roll 6 supported by the roll support 3 disappears, the empty winding core is removed from the roll support 3 and the spare sheet roll 6A stocked on the upper part of the vertical frame 12 is stored. You can replace it.

  In a state where the belt-like sheet 61 is stretched on the ridge 7, each of the seedlings N, N,... Can be protected by the belt-like sheet 61 (including shading against leaf stem Na, prevention of evaporation of moisture in the soil, etc.). Further, when the roots of the seedling N are settled, the leaf stem Na is rejuvenated, and the leaf stem Na protrudes from the slits 63, 63. Furthermore, when the number of days elapses (especially after rainfall), the belt-like sheet 61 is not broken and does not hold down the growing leaf stem. In addition, since the multi-sheet 8 is peeled off from the top of the basket 7 at the harvest time, the strip-like sheet 61 (including the adhesive portion 62) that has become tattered is discarded together with the multi-sheet 8.

It is a perspective view of the seat tension work vehicle of an example of this application. FIG. 2 is a front view of the seat extending work vehicle of FIG. 1. FIG. 2 is a side view of the seat extending work vehicle of FIG. 1. It is the IV-IV arrow line view of FIG. It is a partial perspective view which shows the use condition of the seat extending work vehicle of FIG. It is effect | action explanatory drawing which looked at the use condition of FIG. 5 from the front side. It is effect | action explanatory drawing which looked at the use condition of FIG. 5 from the rear surface side. It is a perspective view of the sheet | seat roll used with the sheet | seat tensioning work vehicle of an example of this application. It is explanatory drawing of the conventional seedling protection method.

Explanation of symbols

  1 is a chassis frame, 2 is a wheel, 3 is a roll support, 4 is a pressing device, 5 is a seeding device, 6 is a sheet roll, 7 is a basket, 8 is a multi-seat, 8a is a planting hole, 42 is a bearing pipe, 43 is a shaft, 44 is a rod, 45 is a roll, 52 is a swing frame, 53 is a roll, 54 is a brush roll, 56 is a power transmission member, 61 is a belt-like sheet, 62 is an adhesive portion, N is a seedling (seedling seedling) Na is a leaf stem.

Claims (3)

Using a sheet roll (6) obtained by winding a belt-like sheet (61) having an adhesive surface in the narrow range of both side edges of the belt-like sheet into a roll shape, and using a sheet (6) covered with a multi-sheet (8) It is a work vehicle for stretching a seedling coating sheet for continuously coating a strip-shaped sheet (61) unrolled from a sheet roll (6) on a planted seedling (N),
A pair of left and right wheels (2, 2) arranged at intervals across the eaves (7) on the chassis frame (1) and the seat roll (6) can be unrolled in the vicinity of the center between both wheels (2, 2). And pressing the pressure-sensitive adhesive portions (62, 62) on both side edges of the belt-like sheet (61) unwound from the sheet roll (6) against the upper surface of the multi-sheet (8). A device (4) and a pair of left and right seedling device (5, 5) for bringing the leaf stem (Na) of the seedling (N) to the center side of the cocoon (7) between both wheels (2, 2) Yes,
The seedling covering sheet stretching work vehicle characterized by the above. In the tension work vehicle of the seedling coating sheet according to claim 1,
The pair of left and right seedling gathering devices (5, 5) includes a brush roll (54) for scraping the leaf stem (Na) of the seedling (N) toward the center side of the cocoon (7), and left and right wheels (2, 2). ) And a power transmission member (56) for transmitting the rotational force of the roll (53) to the brush roll (54).
By rotating each wheel (2, 2), each brush roll (54, 54) is moved to the center side of the culm through each roll (53, 53) and each power transmission member (56, 56). Rotate in the direction of scraping,
The seedling covering sheet stretching work vehicle characterized by the above. In the tension work vehicle of the seedling coating sheet according to claim 1 or 2 ,
The pressing device (4) attaches the two rolls (45, 45) to the rods (44, 44), respectively, while the rods (44, 44) are respectively left and right at one end of one shaft (43). The shaft (43) is fixed in a downwardly inclined posture and is rotatably inserted into a bearing pipe (42) attached to the chassis frame (1) in the front-rear direction.
The seedling covering sheet stretching work vehicle characterized by the above.

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