WO2017145429A1 - Soil supply device of sowing machine for nursery box - Google Patents

Soil supply device of sowing machine for nursery box Download PDF

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Publication number
WO2017145429A1
WO2017145429A1 PCT/JP2016/078458 JP2016078458W WO2017145429A1 WO 2017145429 A1 WO2017145429 A1 WO 2017145429A1 JP 2016078458 W JP2016078458 W JP 2016078458W WO 2017145429 A1 WO2017145429 A1 WO 2017145429A1
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Prior art keywords
shaft
soil
screw
seedling box
tension
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PCT/JP2016/078458
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French (fr)
Japanese (ja)
Inventor
宏記 藤森
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アグリテクノ矢崎株式会社
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Publication of WO2017145429A1 publication Critical patent/WO2017145429A1/en

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C7/00Sowing
    • A01C7/08Broadcast seeders; Seeders depositing seeds in rows
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/08Devices for filling-up flower-pots or pots for seedlings; Devices for setting plants or seeds in pots

Definitions

  • the present invention relates to a fine adjustment of a feeding belt and a tension / relaxation switching mechanism attached to a floor soil supply device and a soil covering supply device in a seedling box seeder.
  • the technology relating to the adjustment mechanism of the feeding belt is publicly known.
  • the feeding belt of the soil feeding device is adjustable by a tension mechanism, and the tension mechanism is provided with a screw shaft for the support plate portion of the frame side plate.
  • the nut is screwed onto the screw shaft and the nut of the tension mechanism arranged at the left and right positions is rotated to move the driven shaft of the driven roller back and forth against the tension of the feeding belt to adjust the tension.
  • the mechanism was configured.
  • the tensioning mechanism is fixed by the nut, once the feeding belt is adjusted, the soil feeding belt remains in tension when not in use, i.e. when stored in a warehouse, when the seedling box is out of seeding time.
  • the tension mechanism of the feeding belt is on the left and right sides of the soil feeding belt, and the tension of the soil feeding belt must be adjusted by adjusting the left and right positions, so there is no mark for knowing the adjustment position, and positioning is troublesome. It was.
  • the present invention is configured as follows in order to solve the above-described problems.
  • the soil supply device for a seedling box in a seedling box seeder according to claim 1, wherein the soil supply device is provided with a soil supply hopper at an upper portion, and a soil feeding belt is provided below the soil supply hopper, The belt is looped between a driving roller and a driven roller, and the driven roller is axially supported by a frame side plate by a driven shaft, and the driven shaft is configured to be movable back and forth in a long hole portion of the frame side plate.
  • a tension mechanism that adjusts the tension of the feeding belt is provided, and the tension mechanism is provided with a screw pipe that protrudes in the front-rear direction from an insertion hole of a support plate provided in the frame side plate, and moves back and forth in the screw pipe.
  • a screw shaft is provided, and a bearing of the driven shaft is provided at an end of the screw shaft, and the screw of the screw shaft is rotated by rotating the screw pipe around an axis.
  • the screw is moved by an amount corresponding to the female screw of the screw pipe to enable fine adjustment of the position of the driven shaft, and a support shaft is provided in a direction perpendicular to the axial center direction of the screw pipe.
  • the operation member is provided at a portion where the screw pipe protrudes rearward from the support plate portion, and the operation member is An arc-shaped portion that is supported by a support shaft and is rotatable at the one end of the operation member in the vertical direction around the support shaft is provided, and the support shaft is shifted forward and backward from the center line of the arc-shaped portion.
  • the tension mechanism of the soil feeding belt configured by the operation member, the screw pipe, and the screw shaft. Is arranged in the feeding direction of the seedling box on the left and right of the soil feeding belt.
  • the belt is looped between a driving roller and a driven roller, and the driven roller is axially supported by a frame side plate by a driven shaft, and the driven shaft is configured to be movable back and forth in a long hole portion of the frame side plate.
  • a tension mechanism that adjusts the tension of the feeding belt is provided, and the tension mechanism is provided with a screw pipe that protrudes in the front-rear direction from an insertion hole of a support plate provided in the frame side plate, and moves back and forth in the screw pipe.
  • a screw shaft is provided, and a bearing of the driven shaft is provided at the end of the screw shaft.
  • a support shaft is provided in a direction perpendicular to the axial center direction of the screw pipe.
  • the operating member is supported by a bearing, and the operating member rotates in the vertical direction, so that the screw pipe and the screw shaft are simultaneously moved, and the position of the driven shaft can be switched between a tension position and a relaxation position. Therefore, the screw pipe and the screw shaft are moved simultaneously, and the position of the driven shaft can be switched between the tension position and the relaxation position, and the tension can be adjusted without using a tool because no nut is used for adjusting the tension.
  • the operation member is provided at a portion where the screw pipe protrudes rearward from the support plate portion, the operation member is supported by the support shaft, and the support shaft is provided at one end of the operation member.
  • An arc-shaped portion that can rotate in the vertical direction is provided, the support shaft is disposed at a position shifted back and forth from the center line of the arc-shaped portion, and the operation member is rotated up and down around the support shaft.
  • the tension mechanism of the soil feeding belt constituted by the operation member, the screw pipe, and the screw shaft is disposed in the feeding direction of the seedling box and on the left and right of the soil feeding belt as in claim 3.
  • the left and right can be fixed at the same position, so that the consumption of the feeding belt can be suppressed and the left and right feeding soil amount can be made uniform.
  • each device constituting the seedling box seeding machine for paddy rice is placed and fixed on the drive rail R, and the seedling box is placed on the drive rail R. While being forcibly conveyed by the roll in the direction of movement F, it passes under each device, the floor soil is supplied, the surface of the floor soil is leveled, and then watered, sowing And covered with soil.
  • the drive rail R is configured such that the transport drive roller 1 and the transport driven roller 2 are installed between the left and right rails.
  • the driving part H for conveying the seedling box
  • the floor soil supply device A for putting floor soil into the seedling box in the middle of the transportation
  • a leveling device E for leveling the surface of the floor soil
  • an irrigation device D for irrigating from the upper surface of the floor soil
  • a prescribed amount of paddy rice seed pods are sown on the floor soil after irrigation.
  • a seeding device B and a soil covering supply device C for dropping a specified amount of soil covering from the upper surface after sowing are disposed.
  • the floor soil supply device A and the cover soil supply device C relate to the soil supply device according to the present invention. Both devices have the same configuration in that the soil is supplied from the hopper to the seedling box.
  • the present invention provides an apparatus that can be used for both the floor soil supply apparatus A and the soil covering supply apparatus C.
  • the present embodiment only the floor soil supply apparatus A will be described.
  • the soil covering supply device C also has the same configuration and effect.
  • a floor soil supply device A which is a soil supply device for a seedling box, is provided with a soil supply hopper 18 that supplies floor soil to the upper portion, and the soil supply hopper A shutter opening / closing operation mechanism 10 is configured on the rear surface of the shutter 18. By operating the shutter opening / closing operation mechanism 10, the shutter moves up and down, and the soil from the seed hopper 18 onto the soil feeding belt 7 is moved. When the seedling box moves rearward in the conveyance direction, the upper surface of the seedling box is regulated to change the carry-out amount of the floor soil.
  • a clutch lever 13 for connecting / disconnecting transmission of power from the drive rail R is disposed. With the clutch lever 13, the driving force of the soil feeding belt 7 can be disconnected / connected. Further, a drive shaft 19 for driving the soil feeding belt 7 is supported on the frame side plates 4L and 4R by bearings. A drive gear 30 is fixed to the end of the drive shaft 19, and a power take-out gear 31 that meshes with the drive gear 30 is supported.
  • the floor soil supply device A is provided with a soil supply hopper 18 at the top, and the drive gear 30 and the drive shaft 19 are disposed below the soil supply hopper 18.
  • the drive roller 6 is driven by the drive shaft 19.
  • a soil feeding belt 7 is installed on the lower surface of the soil supply hopper 18, and the soil feeding belt 7 is wound around the drive roller 6 and the driven roller 5, and the driven roller 5 is driven shaft.
  • the shaft 20 is supported by the bearing 25 between the frame side plates 4L and 4R.
  • the driven shaft 20 is configured to be movable back and forth while being supported by a bearing 25 in a long hole portion 28 opened in the frame side plates 4L and 4R, and a tension mechanism that adjusts the tension of the soil feeding belt 7. T is provided.
  • the power for driving the soil supply belt 7 of the floor soil supply device A is taken out from the drive chain that drives the transport drive roller 1 of the drive rail R via a sprocket, and is placed on the side of the floor soil supply device A. Connection / disconnection of the driving power of the soil feed belt 7 can be switched by the arranged clutch lever 13. It is also possible to provide a speed change mechanism that changes the rotational speed of the earth feed belt 7 to the drive shaft 19 with the power from the drive chain of the drive rail R.
  • the tension mechanism T includes a support plate portion 26, a screw pipe 22, a screw shaft 21, a support shaft 24, and the like. That is, the drive shaft 19 and the driven shaft 20 of the floor soil supply device A are erected with the frame side plates 4L and 4R supporting the left and right sides as bases, and further, the support plate portion is provided in front of the frame side plates 4L and 4R. 26 is erected in the left-right direction.
  • the support plate portion 26 is formed with an insertion hole 26a through which the screw pipe 22 can pass.
  • the screw pipe 22 is protruded from the insertion hole 26a of the support plate portion 26 of the frame side plates 4L and 4R, and the screw shaft 21 that further moves back and forth is screwed into the female screw portion of the screw pipe 22 protruded to the rear side. Disguise.
  • the front end of the screw shaft 21 is configured such that the driven shaft 20 of the driven roller 5 is fixedly supported by a bearing 25 that supports the bearing.
  • the driven shaft 20 of the driven roller 5 is supported by the bearing 25, and the position of the bearing 25 can be finely adjusted by moving the screw shaft 21 back and forth by rotating the screw pipe 22.
  • the screw pipe 22, the screw shaft 21, and the bearing 25 are largely moved back and forth in the same positional relationship, thereby enabling a large switching between relaxation and tension. That is, the operation member 23 is rotated about the axis of the screw pipe 22 by the tension operation lever 29, thereby enabling fine adjustment to move by the screw allowance. Further, by rotating the operation member 23 up and down around the support shaft 24 of the screw pipe 22 by the tension operation lever 29, the screw pipe 22, the screw shaft 21 and the bearing 25 are moved greatly integrally, and the tension is increased. ⁇ The relaxation switching operation is possible.
  • a tension operation lever 29 is attached.
  • the operation member 23 has an arc-shaped portion 23 a at one end, and supports the support shaft 24 at a position shifted back and forth from the center line of the arc-shaped portion 23 a, and supports the screw pipe 22 via the support shaft 24. ing.
  • the driven shaft 20 of the driven roller 5 is configured to be supported by a bearing 25 provided with a screw shaft 21, and in the frame side plates 4L and 4R, an upper portion of the long hole portion 28 where the driven shaft 20 moves back and forth.
  • a scale 27 indicating the position of the driven shaft 20 is provided.
  • the screw shaft 21 is screwed with a screw pipe 22.
  • the screw pipe 22 protrudes from the insertion hole 26a of the support plate portion 26 to the front side in the direction in which the seedling box is conveyed, and the protruding screw pipe 22 includes an operation member 23 for rotating the screw pipe and a tension operation.
  • the lever 29 is attached.
  • a pair of the tension mechanism T and the operation member 23 are arranged on the left and right sides of the floor soil supply device A on the front side in the conveying direction of the seedling box.
  • the tension mechanism T rotates the operation member 23 about the screw pipe 22 by the tension operation lever 29, whereby the screw rotates between the screw shaft 21 and the screw pipe 22, and the screw rotates between the male and the female.
  • the interval between the shaft 21 and the screw pipe 22 is finely adjusted.
  • a scale 27 for identifying the position of the driven shaft 20 is attached to an upper portion of the long hole portion 28 that is front and rear of the driven shaft 20 of the driven roller 5.
  • the operation member 23 for rotating the screw pipe 22 has an arcuate portion 23a at the top, and a support shaft 24 at the end of the screw pipe 22 at a position eccentric to the front and rear in the direction of travel of the seedling box relative to the center line of the arc. Pivot.
  • the tension operating lever 29 is rotated about the support shaft 24 of the operation member 23 around the support shaft 24 provided on the front / rear screw pipe 22, whereby the support shaft 24 is moved relative to the operation member 23. Accordingly, the bearing 25 can be moved back and forth at a stroke to the extent that it is eccentrically supported, and the position of the driving roller 6 can be changed to switch the feeding belt 7 between tension and relaxation. Therefore, the rotation of the operation member 23 around the axis of the screw pipe 22 by the tension operation lever 29 is an operation for finely adjusting the distance between the screw shaft 21 and the screw pipe 22.
  • the bed soil supply device A is provided with the soil supply hopper 18 at the upper portion, and the soil is fed below the soil supply hopper 18.
  • a belt 7 is provided, and the soil feeding belt 7 is wound around the drive roller 6 and the driven roller 5, and the driven roller 5 is axially supported on the frame side plates 4 ⁇ / b> L and 4 ⁇ / b> R by the driven shaft 20.
  • Includes a tension mechanism T that is configured to be movable back and forth in the long holes of the frame side plates 4L and 4R, and that adjusts the tension of the soil feed belt 7, and the tension mechanism T is a support plate portion of the frame side plates 4L and 4R plates.
  • a mechanism is provided in which a bearing 25 is provided on a screw shaft 21 that moves back and forth in a screw pipe 22 that protrudes rearward from the insertion hole 26, and the screw pipe 22 is rotated around the axis of the screw pipe 22.
  • a bearing 25 is provided on a screw shaft 21 that moves back and forth in a screw pipe 22 that protrudes rearward from the insertion hole 26, and the screw pipe 22 is rotated around the axis of the screw pipe 22.
  • a support shaft 24 in a direction orthogonal to the axis is provided, and the operation member 23 is supported by the support shaft 24 by a bearing.
  • the pipe 22 can be rotated in the axial direction, and the rotation of the axial direction enables fine adjustment of the position of the driven shaft 20.
  • the operating member 23 is rotated halfway in the vertical direction around the support shaft 24 of the screw pipe 22, thereby greatly moving the position of the support shaft 24, so that the tension and relaxation of the soil feeding belt 7 can be reduced. It is possible to make great adjustments.
  • the operating member 23 has an arcuate shape 23a at the end for rotating the screw pipe 22 to a portion projecting rearward from the support plate portion 26 of the screw pipe 22, and the support shaft 24 has an arcuate shape 23a.
  • a lock mechanism that is axially supported at a position shifted back and forth from the center line, and is fixed by moving a fixed position largely before and after the center position of the arcuate shape 23a to switch between a relaxed state and a tensioned state.
  • the tension mechanism T of the soil feeding belt 7 constituted by the operation member 23, the screw pipe 22 and the screw shaft 21 is arranged on the left and right of the soil feeding belt 7 in the feeding direction of the seedling box.
  • the frame side plates 4L and 4R are provided with a long hole portion 28 in which the driven shaft moves back and forth, and a scale 27 indicating the position of the driven shaft 20 is provided in the vicinity of the long hole portion 28.
  • the present invention is applicable to soil supply devices such as a floor soil supply device and a soil covering supply device in a seedling box seeder.
  • a Floor soil supply device B Seeding device C Cover soil supply device D Irrigation device E Leveling device F Moving direction of seedling box R Drive rail T Tension mechanism H Rail drive device 1 Transport drive roller 2 Transport driven roller 4L and 4R Frame side plate 5 Driven Roller 6 Driving roller 7 Earth feeding belt 10 Shutter opening / closing operation mechanism 13 Clutch lever 18 Floor soil supply hopper 19 Drive shaft 20 Drive shaft 21 Screw shaft 22 Screw pipe 23 Operation member 23a Arc-shaped portion 24 Support shaft 25 Bearing 26 Support plate portion 26a Insertion hole 27 Scale 28 Long hole 29 Tension control lever 30 Drive gear 31 Power take-out gear

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Sowing (AREA)

Abstract

A soil supply device of a sowing machine for a nursery box is provided which facilitates adjusting the tension of a soil delivery belt. To this end, this soil supply device of a sowing machine for a nursery box is provided with a tension mechanism for adjusting the tension of the soil delivery belt, and in the configuration of the tension mechanism, a screw pipe is provided which projects towards the front-back direction from an insertion hole in a support plate unit provided on a frame-side plate, a screw shaft is provided which moves inside of the screw pipe in the front-back direction, and a bearing of a following shaft is provided on the end of the screw shaft. The screw pipe and the screw shaft are moved simultaneously so that the position of the follower shaft can be switched between a tension position and a loosened position.

Description

育苗箱用播種機の土供給装置Soil feeder for seedling box seeder
 本発明は、育苗箱用播種機における床土供給装置や覆土供給装置に付設する繰出ベルトの微調整と緊張・弛緩の切替機構に関する。 The present invention relates to a fine adjustment of a feeding belt and a tension / relaxation switching mechanism attached to a floor soil supply device and a soil covering supply device in a seedling box seeder.
 従来、育苗箱用播種機の土供給装置において、繰出ベルトの調整機構に関する技術は公知となっているのである。例えば、特許文献1に記載の技術の如くである。従来の育苗箱用播種機の土供給装置において、土供給装置の繰出しベルトはテンション機構により、張り具合を調節自在としており、そのテンション機構は、フレーム側板の支持板部に対して螺子軸を設け、該螺子軸にナットを螺合させ、該左右の位置に配置したテンション機構のナットを回転させることにより、従動ローラーの従動軸を繰出しベルトの張力に抗して前後動させ張り具合を調整する機構に構成していた。 Conventionally, in the soil supply device of a seedling box seeding machine, the technology relating to the adjustment mechanism of the feeding belt is publicly known. For example, it is like the technique described in Patent Document 1. In a conventional soil feeding device for a seedling box seeder, the feeding belt of the soil feeding device is adjustable by a tension mechanism, and the tension mechanism is provided with a screw shaft for the support plate portion of the frame side plate. The nut is screwed onto the screw shaft and the nut of the tension mechanism arranged at the left and right positions is rotated to move the driven shaft of the driven roller back and forth against the tension of the feeding belt to adjust the tension. The mechanism was configured.
特開2010-119372号公報JP 2010-119372 A
 即ち、特許文献1の特開2013-116128号公報に記載の育苗箱用播種機においては、土供給装置の繰出しベルトの張り具合の調節は可能であったが、繰出しベルトの調節作業を、オペレータが左右のナットの回転によって行わなければならず、その微調整と、緊張弛緩の切替操作が面倒であったのである。 That is, in the seedling box seeding machine described in Japanese Patent Application Laid-Open No. 2013-116128 of Patent Document 1, the tension of the feeding belt of the soil supply device can be adjusted, but the adjustment work of the feeding belt is performed by the operator. This has to be done by rotating the left and right nuts, and the fine adjustment and the tension / relaxation switching operation are troublesome.
 また、ナットによって張り具合を固定する機構のため、繰出しベルトは一旦調整すると、育苗箱への播種時期を外れた非使用時、即ち倉庫における保管時も、土繰出しベルトが緊張された状態のままであり、長時間の間、ベルトの緊張状態を続行することにより、繰出しベルトの耐久性を低下させるという不具合があったのである。また、繰出しベルトのテンション機構は、土繰出しベルトの左右にあり、土繰出しベルトの張り具合は、左右の位置を合わせて調整しなければならず、調整位置を知る目印がなく、位置合わせが面倒であったのである。 Also, because the tensioning mechanism is fixed by the nut, once the feeding belt is adjusted, the soil feeding belt remains in tension when not in use, i.e. when stored in a warehouse, when the seedling box is out of seeding time. Thus, there is a problem that the durability of the feeding belt is lowered by continuing the tension state of the belt for a long time. The tension mechanism of the feeding belt is on the left and right sides of the soil feeding belt, and the tension of the soil feeding belt must be adjusted by adjusting the left and right positions, so there is no mark for knowing the adjustment position, and positioning is troublesome. It was.
 従来の技術においては、土繰出しベルトの張り具合の調節は可能であるが、微調整と緊張・弛緩状態の切替が、左右の二個のナットの回転で行わなければならず、面倒であるという課題があった。また、螺子軸を土供給装置の左右に設けられており、調整は左右両方を調節する必要があるが、この左右のテンション機構の調整位置を知る目安がないという課題があった。本発明はこのような不具合を解消せんとするものである。 In the conventional technology, it is possible to adjust the tension of the soil feeding belt, but fine adjustment and switching between tension and relaxation must be performed by rotating the two nuts on the left and right, which is troublesome. There was a problem. In addition, screw shafts are provided on the left and right sides of the soil supply device, and it is necessary to adjust both the left and right sides. The present invention intends to eliminate such problems.
 本発明においては、上記の課題を解決するために、次の如く構成したものである。 The present invention is configured as follows in order to solve the above-described problems.
 請求項1においては、育苗箱用播種機における育苗箱への土供給装置において、前記土供給装置は上部に土供給ホッパーを設け、該土供給ホッパーの下方に土繰出しベルトを設け、該土繰出しベルトは駆動ローラーと従動ローラーとの間に掛け回しされ、前記従動ローラーは従動軸によりフレーム側板に軸支持され、前記従動軸は前記フレーム側板の長孔部に前後移動自在に構成され、前記土繰出しベルトの張り具合を調整するテンション機構を具備し、前記テンション機構は前記フレーム側板に設けた支持板部の挿通孔より前後方向側に突出した螺子パイプを設け、該螺子パイプ内を前後移動する螺子軸を設け、該螺子軸の端部に前記従動軸の軸受を設けた構成とし、前記螺子パイプを軸心周りに回転することにより、前記螺子軸の螺子と前記螺子パイプの雌螺子との間で螺子分だけ移動して、前記従動軸の位置の微調整を可能とし、前記螺子パイプの軸心方向に直交する方向に支持軸を設け、該支持軸の周囲に操作部材を軸受支持し、該操作部材が上下方向に回動することにより、前記螺子パイプと前記螺子軸が同時に移動されて、前記従動軸の位置を緊張位置と弛緩位置に切替え可能としたものである。 The soil supply device for a seedling box in a seedling box seeder according to claim 1, wherein the soil supply device is provided with a soil supply hopper at an upper portion, and a soil feeding belt is provided below the soil supply hopper, The belt is looped between a driving roller and a driven roller, and the driven roller is axially supported by a frame side plate by a driven shaft, and the driven shaft is configured to be movable back and forth in a long hole portion of the frame side plate. A tension mechanism that adjusts the tension of the feeding belt is provided, and the tension mechanism is provided with a screw pipe that protrudes in the front-rear direction from an insertion hole of a support plate provided in the frame side plate, and moves back and forth in the screw pipe. A screw shaft is provided, and a bearing of the driven shaft is provided at an end of the screw shaft, and the screw of the screw shaft is rotated by rotating the screw pipe around an axis. The screw is moved by an amount corresponding to the female screw of the screw pipe to enable fine adjustment of the position of the driven shaft, and a support shaft is provided in a direction perpendicular to the axial center direction of the screw pipe. By supporting the operating member around the bearing and rotating the operating member in the vertical direction, the screw pipe and the screw shaft are moved simultaneously, and the position of the driven shaft can be switched between a tension position and a relaxed position. It is a thing.
 請求項2においては、請求項1記載の育苗箱用播種機の土供給装置において、前記螺子パイプを前記支持板部より後側に突出させた部分に前記操作部材を設け、該操作部材は前記支持軸に支持され、前記操作部材の一端には前記支持軸を中心に上下方向に回転可能とする円弧状部を設け、前記支持軸は前記円弧状部の中心線より前後にずらした位置に配置し、前記操作部材を前記支持軸を中心として上下に回動することにより、前記円弧状部の中心位置の前後に前記支持軸の位置が大きく移動され、前記螺子パイプと前記螺子軸を介して前記繰出しベルトの弛緩状態と緊張状態とを切り替え可能としたものである。 In Claim 2, In the soil supply apparatus of the seedling box seeder according to claim 1, the operation member is provided at a portion where the screw pipe protrudes rearward from the support plate portion, and the operation member is An arc-shaped portion that is supported by a support shaft and is rotatable at the one end of the operation member in the vertical direction around the support shaft is provided, and the support shaft is shifted forward and backward from the center line of the arc-shaped portion. By arranging and rotating the operation member up and down around the support shaft, the position of the support shaft is greatly moved before and after the center position of the arcuate portion, and the screw pipe and the screw shaft are interposed. Thus, the relaxed state and the tensioned state of the feeding belt can be switched.
 請求項3においては、請求項1又は請求項2に記載の育苗箱用播種機の土供給装置において、前記操作部材と前記螺子パイプと前記螺子軸により構成した、前記土繰出しベルトの前記テンション機構を、育苗箱の供給方向であって、前記土繰出しベルトの左右に配置したものである。 In Claim 3, In the soil supply apparatus of the seedling box seedling machine according to Claim 1 or 2, the tension mechanism of the soil feeding belt configured by the operation member, the screw pipe, and the screw shaft. Is arranged in the feeding direction of the seedling box on the left and right of the soil feeding belt.
 請求項4においては、請求項1乃至請求項3のいずれか一項に記載の育苗箱用播種機の土供給装置において、前記長孔部の近傍に前記従動軸の位置を示す目盛りを具備したものである。 In Claim 4, in the soil supply apparatus of the seedling box seeder according to any one of claims 1 to 3, a scale indicating the position of the driven shaft is provided in the vicinity of the long hole portion. Is.
 本発明の効果として、以下に示すような効果を奏する。 As the effects of the present invention, the following effects are obtained.
 請求項1の如く、育苗箱用播種機における育苗箱への土供給装置において、前記土供給装置は上部に土供給ホッパーを設け、該土供給ホッパーの下方に土繰出しベルトを設け、該土繰出しベルトは駆動ローラーと従動ローラーとの間に掛け回しされ、前記従動ローラーは従動軸によりフレーム側板に軸支持され、前記従動軸は前記フレーム側板の長孔部に前後移動自在に構成され、前記土繰出しベルトの張り具合を調整するテンション機構を具備し、前記テンション機構は前記フレーム側板に設けた支持板部の挿通孔より前後方向側に突出した螺子パイプを設け、該螺子パイプ内を前後移動する螺子軸を設け、該螺子軸の端部に前記従動軸の軸受を設けた構成とし、前記螺子パイプを軸心周りに回転することにより、前記螺子軸の螺子と前記螺子パイプの雌螺子との間で螺子分だけ移動して、前記従動軸の位置の微調整を可能とし、前記螺子パイプの軸心方向に直交する方向に支持軸を設け、該支持軸の周囲に操作部材を軸受支持し、該操作部材が上下方向に回動することにより、前記螺子パイプと前記螺子軸が同時に移動されて、前記従動軸の位置を緊張位置と弛緩位置に切替え可能としたので、螺子パイプと螺子軸が同時に移動されて、従動軸の位置を、緊張位置と弛緩位置に切替えることができ、テンションの調節にナットを使用しないため、工具を使わずテンションの調節ができる。 The soil supply device for the seedling box in the seedling box seeder as in claim 1, wherein the soil supply device is provided with a soil supply hopper at the top, and a soil feed belt is provided below the soil supply hopper, The belt is looped between a driving roller and a driven roller, and the driven roller is axially supported by a frame side plate by a driven shaft, and the driven shaft is configured to be movable back and forth in a long hole portion of the frame side plate. A tension mechanism that adjusts the tension of the feeding belt is provided, and the tension mechanism is provided with a screw pipe that protrudes in the front-rear direction from an insertion hole of a support plate provided in the frame side plate, and moves back and forth in the screw pipe. A screw shaft is provided, and a bearing of the driven shaft is provided at the end of the screw shaft. By rotating the screw pipe around the axis, the screw of the screw shaft and the front It is possible to finely adjust the position of the driven shaft by moving the screw pipe between the female screw of the screw pipe, and a support shaft is provided in a direction perpendicular to the axial center direction of the screw pipe. The operating member is supported by a bearing, and the operating member rotates in the vertical direction, so that the screw pipe and the screw shaft are simultaneously moved, and the position of the driven shaft can be switched between a tension position and a relaxation position. Therefore, the screw pipe and the screw shaft are moved simultaneously, and the position of the driven shaft can be switched between the tension position and the relaxation position, and the tension can be adjusted without using a tool because no nut is used for adjusting the tension.
 また、微調整と、緊張・弛緩の切替えの両方の操作を、テンション操作レバーと操作部材により、兼用して行うことができるので、2本の操作レバーを設ける必要がなくなったのである。また、従来技術の如く、ナットを使用しないため、調整に工具を使用する必要がない。 Also, since both fine adjustment and tension / relaxation operations can be performed with the tension operation lever and the operation member, there is no need to provide two operation levers. Further, unlike the prior art, since no nut is used, it is not necessary to use a tool for adjustment.
 請求項2の如く、前記螺子パイプを前記支持板部より後側に突出させた部分に前記操作部材を設け、該操作部材は前記支持軸に支持され、前記操作部材の一端には前記支持軸を中心に上下方向に回転可能とする円弧状部を設け、前記支持軸は前記円弧状部の中心線より前後にずらした位置に配置し、前記操作部材を前記支持軸を中心として上下に回動することにより、前記円弧状部の中心位置の前後に前記支持軸の位置が大きく移動され、前記螺子パイプと前記螺子軸を介して前記繰出しベルトの弛緩状態と緊張状態とを切り替え可能としたので、簡単に、緊張と弛緩の間のテンションの切替が行えるため、非使用時にテンションを弛めて保管するのが容易にできるようになったのである。 According to a second aspect of the present invention, the operation member is provided at a portion where the screw pipe protrudes rearward from the support plate portion, the operation member is supported by the support shaft, and the support shaft is provided at one end of the operation member. An arc-shaped portion that can rotate in the vertical direction is provided, the support shaft is disposed at a position shifted back and forth from the center line of the arc-shaped portion, and the operation member is rotated up and down around the support shaft. By moving, the position of the support shaft is largely moved before and after the center position of the arc-shaped portion, and the loosened state and the tensioned state of the feeding belt can be switched via the screw pipe and the screw shaft. Therefore, since the tension can be easily switched between tension and relaxation, the tension can be relaxed and stored when not in use.
 請求項3の如く、前記操作部材と前記螺子パイプと前記螺子軸により構成した、前記土繰出しベルトの前記テンション機構を、育苗箱の供給方向であって、前記土繰出しベルトの左右に配置したので、左右同じ位置に固定することができ、繰出しベルトの消耗を抑えることができ、左右均一な繰出し土量にする事ができるようになったのである。 Since the tension mechanism of the soil feeding belt constituted by the operation member, the screw pipe, and the screw shaft is disposed in the feeding direction of the seedling box and on the left and right of the soil feeding belt as in claim 3. The left and right can be fixed at the same position, so that the consumption of the feeding belt can be suppressed and the left and right feeding soil amount can be made uniform.
 請求項4の如く、前記長孔部の近傍に前記従動軸の位置を示す目盛りを具備したので、左右の従動軸の位置が明確になり、調節しやすくなったのである。 As described in claim 4, since the scale indicating the position of the driven shaft is provided in the vicinity of the slot, the positions of the left and right driven shafts are clear and easy to adjust.
育苗箱用の土供給装置を具備した育苗箱用播種機の全体斜視図。The whole perspective view of the seedling machine seedling machine provided with the soil supply device for the seedling box. 育苗箱用の土供給装置の全体斜視図。The whole perspective view of the soil supply apparatus for nursery boxes. 育苗箱用の土供給装置の側面図。The side view of the soil supply apparatus for nursery boxes. 育苗箱用の土供給装置の後面図。The rear view of the soil supply apparatus for nursery boxes. 育苗箱用の土供給装置の平面図。The top view of the soil supply apparatus for nursery boxes. 育苗箱用の土供給装置の側面構造模式図。The side structure schematic diagram of the soil supply apparatus for seedling boxes. ベルトテンション機構の拡大模式図。The expansion schematic diagram of a belt tension mechanism. 土繰出しベルトが緊張されロックされた状態を示す側面図。The side view which shows the state which the earth | yield delivery belt was tensioned and locked. 土繰出しベルトが弛緩した状態を示す側面図。The side view which shows the state which the earth | yield delivery belt relaxed.
 以下、本発明を実施するための形態について図面に基づき、育苗箱用播種機について説明する。 Hereinafter, a seedling box seeding machine will be described with reference to the drawings for a mode for carrying out the present invention.
 図1に示す育苗箱用播種機において、駆動レールRの上に、水稲用の育苗箱用播種機を構成する各装置が載置固定されており、該駆動レールRの上を、育苗箱がロールにより強制的に、移動方向Fの方向に搬送される間に、各装置の下を通過して、床土が供給されて、床土の表面が均されて、次に灌水されて、播種されて、覆土される。駆動レールRは、搬送駆動ローラー1と、搬送従動ローラー2が、左右のレールの間に架設されて構成されている。 In the seedling box seeding machine shown in FIG. 1, each device constituting the seedling box seeding machine for paddy rice is placed and fixed on the drive rail R, and the seedling box is placed on the drive rail R. While being forcibly conveyed by the roll in the direction of movement F, it passes under each device, the floor soil is supplied, the surface of the floor soil is leveled, and then watered, sowing And covered with soil. The drive rail R is configured such that the transport drive roller 1 and the transport driven roller 2 are installed between the left and right rails.
 駆動レールRにより構成された強制移送部には、育苗箱の搬送方向から順に、育苗箱搬送用の駆動部Hと、その搬送途中に育苗箱に床土を入れる床土供給装置Aと、該床土供給装置Aを通過後に、床土の表面を均す均平装置Eと、該床土の上面から灌水する灌水装置Dと、灌水後の床土上に規定量の水稲種籾を播種する播種装置Bと、播種後に上面から規定量の覆土を落とす覆土供給装置Cとが配置されている。前記床土供給装置Aと覆土供給装置Cが本発明に係る土供給装置に関するものである。どちらの装置においても、土がホッパーから育苗箱に供給されるという点で、同様の構成を具備しているのである。 In the forced transfer part constituted by the drive rail R, in order from the conveying direction of the seedling box, the driving part H for conveying the seedling box, the floor soil supply device A for putting floor soil into the seedling box in the middle of the transportation, After passing through the floor soil supply device A, a leveling device E for leveling the surface of the floor soil, an irrigation device D for irrigating from the upper surface of the floor soil, and a prescribed amount of paddy rice seed pods are sown on the floor soil after irrigation. A seeding device B and a soil covering supply device C for dropping a specified amount of soil covering from the upper surface after sowing are disposed. The floor soil supply device A and the cover soil supply device C relate to the soil supply device according to the present invention. Both devices have the same configuration in that the soil is supplied from the hopper to the seedling box.
 本発明は、床土供給装置Aと覆土供給装置Cの両方に用いることが可能な装置を提供するものであるが、本実施例においては、床土供給装置Aについてのみ説明する。覆土供給装置Cについても、同様の構成と効果を具備しているものである。 The present invention provides an apparatus that can be used for both the floor soil supply apparatus A and the soil covering supply apparatus C. In the present embodiment, only the floor soil supply apparatus A will be described. The soil covering supply device C also has the same configuration and effect.
 図2、図3、図4、図5において、育苗箱用の土供給装置である床土供給装置Aは、上部に床土を供給する土供給ホッパー18を配置しており、該土供給ホッパー18の後面には、シャッター開閉操作機構10を構成しており、該シャッター開閉操作機構10を操作することにより、シャッターが上下に移動して、種子ホッパー18から土繰出しベルト7の上への土を、育苗箱が搬送方向の後方に移動する際において、その上面を規制して、床土の搬出量を変更することを可能としている。 2, 3, 4, and 5, a floor soil supply device A, which is a soil supply device for a seedling box, is provided with a soil supply hopper 18 that supplies floor soil to the upper portion, and the soil supply hopper A shutter opening / closing operation mechanism 10 is configured on the rear surface of the shutter 18. By operating the shutter opening / closing operation mechanism 10, the shutter moves up and down, and the soil from the seed hopper 18 onto the soil feeding belt 7 is moved. When the seedling box moves rearward in the conveyance direction, the upper surface of the seedling box is regulated to change the carry-out amount of the floor soil.
 また、駆動レールRからの動力の伝達を断接するクラッチレバー13が配置されている。該クラッチレバー13により、土繰出しベルト7の駆動力の断・接を行うことが可能である。更に、土繰出しベルト7を駆動する駆動軸19がフレーム側板4L・4Rに軸受により支持されている。また、駆動軸19の端部には、駆動ギヤ30が固設され、該駆動ギヤ30と噛合する動力取出ギヤ31が支持されている。 Further, a clutch lever 13 for connecting / disconnecting transmission of power from the drive rail R is disposed. With the clutch lever 13, the driving force of the soil feeding belt 7 can be disconnected / connected. Further, a drive shaft 19 for driving the soil feeding belt 7 is supported on the frame side plates 4L and 4R by bearings. A drive gear 30 is fixed to the end of the drive shaft 19, and a power take-out gear 31 that meshes with the drive gear 30 is supported.
 前記駆動ギヤ30と動力取出ギヤ31の組み合わせを変更することにより、床土供給装置Aの供給量の基本的な変更をすることも可能である。床土供給装置Aは、上部に土供給ホッパー18を設け、該土供給ホッパー18の下方に、前記駆動ギヤ30と駆動軸19が配置されており、該駆動軸19により駆動ローラー6が駆動される。 It is also possible to change the basic supply amount of the floor soil supply device A by changing the combination of the drive gear 30 and the power take-out gear 31. The floor soil supply device A is provided with a soil supply hopper 18 at the top, and the drive gear 30 and the drive shaft 19 are disposed below the soil supply hopper 18. The drive roller 6 is driven by the drive shaft 19. The
 前記土供給ホッパー18の下面には土繰出しベルト7が架設されており、該土繰出しベルト7は、前記駆動ローラー6と従動ローラー5との間に掛け回しされており、従動ローラー5は従動軸20によりフレーム側板4L・4Rの間に軸受25により軸支持されている。該従動軸20は、フレーム側板4L・4Rに開口された長孔部28において軸受25により軸受支持された状態で前後移動自在に構成されており、土繰出しベルト7の張り具合を調整するテンション機構Tを具備している。 A soil feeding belt 7 is installed on the lower surface of the soil supply hopper 18, and the soil feeding belt 7 is wound around the drive roller 6 and the driven roller 5, and the driven roller 5 is driven shaft. The shaft 20 is supported by the bearing 25 between the frame side plates 4L and 4R. The driven shaft 20 is configured to be movable back and forth while being supported by a bearing 25 in a long hole portion 28 opened in the frame side plates 4L and 4R, and a tension mechanism that adjusts the tension of the soil feeding belt 7. T is provided.
 前記床土供給装置Aの土繰出しベルト7を駆動する動力は、前記駆動レールRの搬送駆動ローラー1を駆動する駆動チェーンから、スプロケットを介して取りだしており、床土供給装置Aの側部に配置したクラッチレバー13により、土繰出しベルト7の駆動動力の断接を切り替えることができる。また、該駆動レールRの駆動チェーンからの動力で、該土繰出しベルト7の駆動軸19への回転数を変速する変速機構を設けることも可能である。 The power for driving the soil supply belt 7 of the floor soil supply device A is taken out from the drive chain that drives the transport drive roller 1 of the drive rail R via a sprocket, and is placed on the side of the floor soil supply device A. Connection / disconnection of the driving power of the soil feed belt 7 can be switched by the arranged clutch lever 13. It is also possible to provide a speed change mechanism that changes the rotational speed of the earth feed belt 7 to the drive shaft 19 with the power from the drive chain of the drive rail R.
 図6、図7、図8、図9において、育苗箱用の土供給装置の構成について詳細に説明する。前記テンション機構Tは、支持板部26と螺子パイプ22と螺子軸21と、支持軸24等により構成している。即ち、床土供給装置Aの駆動軸19と従動軸20を、左右において支持するフレーム側板4L・4Rを基台として立設しており、更に該フレーム側板4L・4Rの前側に、支持板部26を左右方向に向けて立設している。該支持板部26には、螺子パイプ22が通過可能な挿通孔26aを開口して構成している。該フレーム側板4L・4Rの支持板部26の挿通孔26aより、螺子パイプ22を突出させて、該後側に突出させた螺子パイプ22の雌螺子部内に、更に前後移動する螺子軸21を螺装している。該螺子軸21の前端には、従動ローラー5の従動軸20を、軸受支持する軸受25を固設支持した構成としているのである。 6, 7, 8, and 9, the configuration of the soil supply device for the seedling box will be described in detail. The tension mechanism T includes a support plate portion 26, a screw pipe 22, a screw shaft 21, a support shaft 24, and the like. That is, the drive shaft 19 and the driven shaft 20 of the floor soil supply device A are erected with the frame side plates 4L and 4R supporting the left and right sides as bases, and further, the support plate portion is provided in front of the frame side plates 4L and 4R. 26 is erected in the left-right direction. The support plate portion 26 is formed with an insertion hole 26a through which the screw pipe 22 can pass. The screw pipe 22 is protruded from the insertion hole 26a of the support plate portion 26 of the frame side plates 4L and 4R, and the screw shaft 21 that further moves back and forth is screwed into the female screw portion of the screw pipe 22 protruded to the rear side. Disguise. The front end of the screw shaft 21 is configured such that the driven shaft 20 of the driven roller 5 is fixedly supported by a bearing 25 that supports the bearing.
 前記従動ローラー5の従動軸20は、該軸受25により軸受支持されており、該軸受25の位置を、螺子パイプ22の回転により螺子軸21を前後動させて微調整可能としている。また、螺子パイプ22と螺子軸21と軸受25をそのままの位置関係で、前後に大きく移動することにより、弛緩と緊張の大きな切り換えを可能としている。即ち、該操作部材23をテンション操作レバー29により、螺子パイプ22の軸心周りに、回転することにより、螺子代の分だけ移動する微調整を可能としているのである。また、テンション操作レバー29により操作部材23を、螺子パイプ22の支持軸24を中心に上下に回動することにより、螺子パイプ22と螺子軸21と軸受25を一体的に大きく移動して、緊張・弛緩の切替え操作を可能としているのである。 The driven shaft 20 of the driven roller 5 is supported by the bearing 25, and the position of the bearing 25 can be finely adjusted by moving the screw shaft 21 back and forth by rotating the screw pipe 22. In addition, the screw pipe 22, the screw shaft 21, and the bearing 25 are largely moved back and forth in the same positional relationship, thereby enabling a large switching between relaxation and tension. That is, the operation member 23 is rotated about the axis of the screw pipe 22 by the tension operation lever 29, thereby enabling fine adjustment to move by the screw allowance. Further, by rotating the operation member 23 up and down around the support shaft 24 of the screw pipe 22 by the tension operation lever 29, the screw pipe 22, the screw shaft 21 and the bearing 25 are moved greatly integrally, and the tension is increased.・ The relaxation switching operation is possible.
 前記螺子パイプ22が支持板部26の挿通孔26aより、床土供給装置Aの育苗箱の搬送方向の上流側に突出させた部分に、該螺子パイプ22を回転操作するための操作部材23とテンション操作レバー29が付設されている。該操作部材23は一端部を円弧状部23aとし、該円弧状部23aの中心線より前後にずらした位置に支持軸24を軸支持し、該支持軸24を介して螺子パイプ22を支持している。この構成において、テンション操作レバー29により操作部材23を上下方向に回動することにより、円弧状部23aの中心線を介して、支持軸24が育苗箱の前後方向に大きく位置を移動して、土繰出しベルト7の緊張・弛緩の切替えをするロック機構を構成具備させている。 An operation member 23 for rotating the screw pipe 22 at a portion where the screw pipe 22 protrudes from the insertion hole 26a of the support plate 26 to the upstream side in the conveying direction of the seedling box of the floor soil supply device A; A tension operation lever 29 is attached. The operation member 23 has an arc-shaped portion 23 a at one end, and supports the support shaft 24 at a position shifted back and forth from the center line of the arc-shaped portion 23 a, and supports the screw pipe 22 via the support shaft 24. ing. In this configuration, by rotating the operation member 23 in the vertical direction by the tension operation lever 29, the support shaft 24 moves greatly in the front-rear direction of the seedling box via the center line of the arc-shaped portion 23 a, A lock mechanism for switching between tension and relaxation of the soil feeding belt 7 is provided.
 また、従動ローラー5の従動軸20を、螺子軸21を設けた軸受25により軸受支持する構成とし、前記フレーム側板4L・4Rにおいて、該従動軸20が前後動する長孔部28の上部に、従動軸20の位置を示す目盛り27を具備している。該螺子軸21は、螺子パイプ22を螺合させている。該螺子パイプ22は、支持板部26の挿通孔26aより、育苗箱が搬送される方向の前側に突出させ、突出した螺子パイプ22には、螺子パイプを回転させるための操作部材23とテンション操作レバー29が取りつけられているのである。該テンション機構Tと操作部材23は、床土供給装置Aにおいて、育苗箱の搬送方向の前側の左右に、一対が構成配置されている。 Further, the driven shaft 20 of the driven roller 5 is configured to be supported by a bearing 25 provided with a screw shaft 21, and in the frame side plates 4L and 4R, an upper portion of the long hole portion 28 where the driven shaft 20 moves back and forth. A scale 27 indicating the position of the driven shaft 20 is provided. The screw shaft 21 is screwed with a screw pipe 22. The screw pipe 22 protrudes from the insertion hole 26a of the support plate portion 26 to the front side in the direction in which the seedling box is conveyed, and the protruding screw pipe 22 includes an operation member 23 for rotating the screw pipe and a tension operation. The lever 29 is attached. A pair of the tension mechanism T and the operation member 23 are arranged on the left and right sides of the floor soil supply device A on the front side in the conveying direction of the seedling box.
 前記テンション機構Tは、テンション操作レバー29により操作部材23を螺子パイプ22を中心に回転させることにより、螺子軸21と螺子パイプ22の間で、螺子が雄と雌の間で回転して、螺子軸21と螺子パイプ22の間隔を微調整する。従動ローラー5の従動軸20を前後する長孔部28の上部に、従動軸20の位置がわかる目盛り27が取付けられている。螺子パイプ22を回転させるための操作部材23は、上部を円弧状部23aとし、円弧の中心線よりも、育苗箱の進行方向の前後に偏心した位置に螺子パイプ22の端部の支持軸24を枢支する。 The tension mechanism T rotates the operation member 23 about the screw pipe 22 by the tension operation lever 29, whereby the screw rotates between the screw shaft 21 and the screw pipe 22, and the screw rotates between the male and the female. The interval between the shaft 21 and the screw pipe 22 is finely adjusted. A scale 27 for identifying the position of the driven shaft 20 is attached to an upper portion of the long hole portion 28 that is front and rear of the driven shaft 20 of the driven roller 5. The operation member 23 for rotating the screw pipe 22 has an arcuate portion 23a at the top, and a support shaft 24 at the end of the screw pipe 22 at a position eccentric to the front and rear in the direction of travel of the seedling box relative to the center line of the arc. Pivot.
 微調整後に、前記テンション操作レバー29を操作部材23の支持軸24を中心に、前後螺子パイプ22に設けた支持軸24の周囲に半回転することにより、該支持軸24が操作部材23に対して偏心して支持されている分だけ、一気に軸受25を前後に移動して、駆動ローラー6の位置を変更し、繰出しベルト7を緊張と弛緩に切り替えることができる。故に、テンション操作レバー29による操作部材23を螺子パイプ22の軸心周りへの回転は、螺子軸21と螺子パイプ22との間で、距離を微調整するための操作である。逆に、テンション操作レバー29を、支持軸24を軸心として上下に回動する操作は、螺子軸21に螺子パイプ22の距離を、最初に設定した距離だけ、一気に大きく変更して、駆動ローラー6を移動させる、繰出しベルト7のための緊張・弛緩操作である。該操作部材23の操作により、従動ローラー5の位置の微調整と、緊張・弛緩の切替えの両方を行うことができるように構成しているのである。 After fine adjustment, the tension operating lever 29 is rotated about the support shaft 24 of the operation member 23 around the support shaft 24 provided on the front / rear screw pipe 22, whereby the support shaft 24 is moved relative to the operation member 23. Accordingly, the bearing 25 can be moved back and forth at a stroke to the extent that it is eccentrically supported, and the position of the driving roller 6 can be changed to switch the feeding belt 7 between tension and relaxation. Therefore, the rotation of the operation member 23 around the axis of the screw pipe 22 by the tension operation lever 29 is an operation for finely adjusting the distance between the screw shaft 21 and the screw pipe 22. Conversely, the operation of rotating the tension operation lever 29 up and down around the support shaft 24 changes the distance between the screw pipe 22 and the screw pipe 22 to the screw shaft 21 at a stretch by the distance set first, and the drive roller 6 is a tension / relaxation operation for the feeding belt 7 that moves 6. By the operation of the operation member 23, both the fine adjustment of the position of the driven roller 5 and the switching between tension and relaxation can be performed.
 以上のように、水稲の育苗箱用播種機における育苗箱への床土供給装置Aにおいて、該床土供給装置Aは上部に土供給ホッパー18を設け、該土供給ホッパー18の下方に土繰出しベルト7を設け、該土繰出しベルト7は、駆動ローラー6と従動ローラー5との間に掛け回しされ、該従動ローラー5は従動軸20によりフレーム側板4L・4Rに軸支持され、該従動軸20は、フレーム側板4L・4Rの長孔に前後移動自在に構成し、土繰出しベルト7の張り具合を調整するテンション機構Tを具備し、前記テンション機構Tはフレーム側板4L・4R板の支持板部26の挿通孔より後側に突出させた螺子パイプ22内に前後移動する螺子軸21に軸受25を設けた機構とし、該螺子パイプ22を、螺子パイプ22の軸心周りに回転することにより、螺子軸21と螺子パイプ22の間で、従動軸20の位置の微調整を可能とし、該螺子パイプ22の軸心方向に直交する方向に軸支持した支持軸24の周囲に、上下方向に回動することにより、螺子パイプ22と螺子軸21が同時に移動されて、従動軸20の位置を、緊張位置と弛緩位置に切替え可能としているのである。 As described above, in the bed soil supply device A to the seedling box in the seedling box seedling box seeder, the bed soil supply device A is provided with the soil supply hopper 18 at the upper portion, and the soil is fed below the soil supply hopper 18. A belt 7 is provided, and the soil feeding belt 7 is wound around the drive roller 6 and the driven roller 5, and the driven roller 5 is axially supported on the frame side plates 4 </ b> L and 4 </ b> R by the driven shaft 20. Includes a tension mechanism T that is configured to be movable back and forth in the long holes of the frame side plates 4L and 4R, and that adjusts the tension of the soil feed belt 7, and the tension mechanism T is a support plate portion of the frame side plates 4L and 4R plates. A mechanism is provided in which a bearing 25 is provided on a screw shaft 21 that moves back and forth in a screw pipe 22 that protrudes rearward from the insertion hole 26, and the screw pipe 22 is rotated around the axis of the screw pipe 22. Thus, it is possible to finely adjust the position of the driven shaft 20 between the screw shaft 21 and the screw pipe 22, and around the support shaft 24 that is axially supported in a direction orthogonal to the axial direction of the screw pipe 22, the vertical direction The screw pipe 22 and the screw shaft 21 are moved at the same time so that the position of the driven shaft 20 can be switched between a tension position and a relaxation position.
 また、前記螺子パイプ22が支持板部26から突出した位置において、軸心と直交する方向の支持軸24を設け、該支持軸24に操作部材23を軸受支持し、該操作部材23により、螺子パイプ22の軸心方向の回転を可能とし、この軸心方向の回転により従動軸20の位置の微調整を可能としている。また、該操作部材23を、前記螺子パイプ22の支持軸24を中心に、上下方向に半回転することにより、該支持軸24の位置を大きく移動させて、土繰出しベルト7の緊張と弛緩のための大きな調整を可能としているのである。 Further, at a position where the screw pipe 22 protrudes from the support plate portion 26, a support shaft 24 in a direction orthogonal to the axis is provided, and the operation member 23 is supported by the support shaft 24 by a bearing. The pipe 22 can be rotated in the axial direction, and the rotation of the axial direction enables fine adjustment of the position of the driven shaft 20. Further, the operating member 23 is rotated halfway in the vertical direction around the support shaft 24 of the screw pipe 22, thereby greatly moving the position of the support shaft 24, so that the tension and relaxation of the soil feeding belt 7 can be reduced. It is possible to make great adjustments.
 即ち、前記操作部材23は、螺子パイプ22の支持板部26より後側に突出させた部分に螺子パイプ22を回転させるために端部を円弧状23aとし、該支持軸24を円弧状23aの中心線より前後にずらした位置に軸支持し、円弧状23aの中心位置の前後に、固定位置が大きく移動して弛緩状態と緊張状態とを切り替えて固定するロック機構を具備したものある。 That is, the operating member 23 has an arcuate shape 23a at the end for rotating the screw pipe 22 to a portion projecting rearward from the support plate portion 26 of the screw pipe 22, and the support shaft 24 has an arcuate shape 23a. There is provided a lock mechanism that is axially supported at a position shifted back and forth from the center line, and is fixed by moving a fixed position largely before and after the center position of the arcuate shape 23a to switch between a relaxed state and a tensioned state.
 また、前記操作部材23と螺子パイプ22と螺子軸21により構成した、土繰出しベルト7のテンション機構Tを、育苗箱の供給方向であって、土繰出しベルト7の左右に配置したものである。 Further, the tension mechanism T of the soil feeding belt 7 constituted by the operation member 23, the screw pipe 22 and the screw shaft 21 is arranged on the left and right of the soil feeding belt 7 in the feeding direction of the seedling box.
 また、前記フレーム側板4L・4Rに、従動軸が前後する長孔部28を設け、該長孔部28の近傍に、従動軸20の位置を示す目盛り27を具備したものである。 Further, the frame side plates 4L and 4R are provided with a long hole portion 28 in which the driven shaft moves back and forth, and a scale 27 indicating the position of the driven shaft 20 is provided in the vicinity of the long hole portion 28.
 本発明は、育苗箱用播種機における床土供給装置や覆土供給装置といった土供給装置に利用可能である。 The present invention is applicable to soil supply devices such as a floor soil supply device and a soil covering supply device in a seedling box seeder.
 A 床土供給装置
 B 播種装置
 C 覆土供給装置
 D 灌水装置
 E 均平装置
 F 育苗箱の移動方向
 R 駆動レール
 T テンション機構
 H レール駆動装置
 1 搬送駆動ローラー
 2 搬送従動ローラー
 4L・4R フレーム側板
 5 従動ローラー
 6 駆動ローラー
 7 土繰出しベルト
 10 シャッター開閉操作機構
 13 クラッチレバー
 18 床土供給ホッパー
 19 駆動軸
 20 従動軸
 21 螺子軸
 22 螺子パイプ
 23 操作部材
 23a 円弧状部
 24 支持軸
 25 軸受
 26 支持板部
 26a 挿通孔
 27 目盛り
 28 長孔部
 29 テンション操作レバー
 30 駆動ギヤ
 31 動力取出ギヤ
A Floor soil supply device B Seeding device C Cover soil supply device D Irrigation device E Leveling device F Moving direction of seedling box R Drive rail T Tension mechanism H Rail drive device 1 Transport drive roller 2 Transport driven roller 4L and 4R Frame side plate 5 Driven Roller 6 Driving roller 7 Earth feeding belt 10 Shutter opening / closing operation mechanism 13 Clutch lever 18 Floor soil supply hopper 19 Drive shaft 20 Drive shaft 21 Screw shaft 22 Screw pipe 23 Operation member 23a Arc-shaped portion 24 Support shaft 25 Bearing 26 Support plate portion 26a Insertion hole 27 Scale 28 Long hole 29 Tension control lever 30 Drive gear 31 Power take-out gear

Claims (4)

  1.  育苗箱用播種機における育苗箱への土供給装置において、
     前記土供給装置は上部に土供給ホッパーを設け、該土供給ホッパーの下方に土繰出しベルトを設け、該土繰出しベルトは駆動ローラーと従動ローラーとの間に掛け回しされ、前記従動ローラーは従動軸によりフレーム側板に軸支持され、前記従動軸は前記フレーム側板の長孔部に前後移動自在に構成され、前記土繰出しベルトの張り具合を調整するテンション機構を具備し、
     前記テンション機構は前記フレーム側板に設けた支持板部の挿通孔より前後方向側に突出した螺子パイプを設け、該螺子パイプ内を前後移動する螺子軸を設け、該螺子軸の端部に前記従動軸の軸受を設けた構成とし、前記螺子パイプを軸心周りに回転することにより、前記螺子軸の螺子と前記螺子パイプの雌螺子との間で螺子分だけ移動して、前記従動軸の位置の微調整を可能とし、
     前記螺子パイプの軸心方向に直交する方向に支持軸を設け、該支持軸の周囲に操作部材を軸受支持し、該操作部材が上下方向に回動することにより、前記螺子パイプと前記螺子軸が同時に移動されて、前記従動軸の位置を緊張位置と弛緩位置に切替え可能とした
     ことを特徴とする育苗箱用播種機の土供給装置。
    In the soil supply device to the seedling box in the seedling machine for the seedling box,
    The soil supply device is provided with a soil supply hopper at the top, a soil feed belt is provided below the soil supply hopper, the soil feed belt is wound between a driving roller and a driven roller, and the driven roller is a driven shaft. The shaft is supported by the frame side plate, and the driven shaft is configured to be movable back and forth in the elongated hole portion of the frame side plate, and includes a tension mechanism that adjusts the tension of the soil feeding belt.
    The tension mechanism is provided with a screw pipe that protrudes in the front-rear direction from an insertion hole of a support plate provided on the frame side plate, a screw shaft that moves back and forth in the screw pipe is provided, and the driven shaft is provided at an end of the screw shaft. A configuration in which a shaft bearing is provided, and by rotating the screw pipe around the shaft center, the screw pipe moves between the screw of the screw shaft and the female screw of the screw pipe, and the position of the driven shaft Can be fine-tuned,
    A support shaft is provided in a direction orthogonal to the axial center direction of the screw pipe, an operation member is supported by a bearing around the support shaft, and the operation member rotates in the vertical direction, whereby the screw pipe and the screw shaft The soil supply device for the seedling box sowing machine is characterized in that the position of the driven shaft can be switched between a tension position and a relaxation position by simultaneously moving the driven shaft.
  2.  請求項1記載の育苗箱用播種機の土供給装置において、
     前記螺子パイプを前記支持板部より後側に突出させた部分に前記操作部材を設け、該操作部材は前記支持軸に支持され、前記操作部材の一端には前記支持軸を中心に上下方向に回転可能とする円弧状部を設け、前記支持軸は前記円弧状部の中心線より前後にずらした位置に配置し、
     前記操作部材を前記支持軸を中心として上下に回動することにより、前記円弧状部の中心位置の前後に前記支持軸の位置が大きく移動され、前記螺子パイプと前記螺子軸を介して前記繰出しベルトの弛緩状態と緊張状態とを切り替え可能とした
     ことを特徴とする育苗箱用播種機の土供給装置。
    In the soil supply apparatus of the seedling box seeder according to claim 1,
    The operation member is provided at a portion where the screw pipe is protruded rearward from the support plate portion, the operation member is supported by the support shaft, and one end of the operation member is vertically moved around the support shaft. An arc-shaped portion that is rotatable is provided, and the support shaft is disposed at a position shifted back and forth from the center line of the arc-shaped portion,
    By rotating the operation member up and down around the support shaft, the position of the support shaft is largely moved before and after the center position of the arcuate portion, and the feeding is extended through the screw pipe and the screw shaft. A soil supply device for a seedling box seeder, wherein the belt can be switched between a relaxed state and a tensioned state.
  3.  請求項1又は請求項2に記載の育苗箱用播種機の土供給装置において、
     前記操作部材と前記螺子パイプと前記螺子軸により構成した、前記土繰出しベルトの前記テンション機構を、育苗箱の供給方向であって、前記土繰出しベルトの左右に配置した
     ことを特徴とする育苗箱用播種機の土供給装置。
    In the soil supply apparatus of the seedling box seeder according to claim 1 or 2,
    The seedling box comprising the operation member, the screw pipe, and the screw shaft, wherein the tension mechanism of the soil feeding belt is arranged on the left and right of the soil feeding belt in the feeding direction of the seedling box. Soil feeder for seeding machine.
  4.  請求項1乃至請求項3のいずれか一項に記載の育苗箱用播種機の土供給装置において、
     前記長孔部の近傍に前記従動軸の位置を示す目盛りを具備した
     ことを特徴とする育苗箱用播種機の土供給装置。
    In the soil supply apparatus of the seedling box seeder according to any one of claims 1 to 3,
    A soil supply device for a seedling box seeding machine, comprising a scale indicating the position of the driven shaft in the vicinity of the long hole portion.
PCT/JP2016/078458 2016-02-23 2016-09-27 Soil supply device of sowing machine for nursery box WO2017145429A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111699786A (en) * 2020-07-08 2020-09-25 吴事旺 Flower seed seeding perforating device
CN112655427A (en) * 2021-01-23 2021-04-16 淮安汉德农业科技有限公司 Seedling raising tray production line for raising seedlings by printing seeding paper

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS5845216U (en) * 1981-09-22 1983-03-26 株式会社クボタ Belt tensioning device with index
US6170645B1 (en) * 1998-04-23 2001-01-09 Charles L. Mitchell Conveyor system having a frame adapted to receive a bearing
JP2012085559A (en) * 2010-10-18 2012-05-10 Suzutec Co Ltd Soil feeding device
JP2013141430A (en) * 2012-01-10 2013-07-22 Daiwa Seiko Inc Soil-feeding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5845216U (en) * 1981-09-22 1983-03-26 株式会社クボタ Belt tensioning device with index
US6170645B1 (en) * 1998-04-23 2001-01-09 Charles L. Mitchell Conveyor system having a frame adapted to receive a bearing
JP2012085559A (en) * 2010-10-18 2012-05-10 Suzutec Co Ltd Soil feeding device
JP2013141430A (en) * 2012-01-10 2013-07-22 Daiwa Seiko Inc Soil-feeding device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111699786A (en) * 2020-07-08 2020-09-25 吴事旺 Flower seed seeding perforating device
CN112655427A (en) * 2021-01-23 2021-04-16 淮安汉德农业科技有限公司 Seedling raising tray production line for raising seedlings by printing seeding paper
CN112655427B (en) * 2021-01-23 2022-06-17 淮安汉德农业科技有限公司 Seedling raising tray production line for raising seedlings by printing seeding paper

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