JP2017147965A - Soil supply device of seeding machine for nursery box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soil supply device of a seeding machine for a nursery box in which the tension condition of a soil feed belt can easily be adjusted.SOLUTION: A soil supply device to nursery box in a seeding machine for the nursery box comprises a tension mechanism for adjusting the tension condition of a soil feed belt. The tension mechanism is configured by projecting a screw pipe in the longitudinal direction side from an insertion hole of a support plate part provided in a frame side plate, providing a screw shaft for performing forward/backward movement in the screw pipe, and providing a bearing of the driven axis in the end of the screw shaft. The screw pipe and the screw shaft are moved at the same time, and the position of the driven axis can be switched between a tension position and a relaxation position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a fine adjustment and a tension / relaxation switching mechanism of a feeding belt attached to a floor soil supply device and a covering soil supply device in a seedling box seeder.

  2. Description of the Related Art Conventionally, in a soil supply device for a seedling box seeder, a technique relating to a feeding belt adjustment mechanism is 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.

JP 2010-119372 A

  That is, in the seedling box seeding machine described in Japanese Patent Application Laid-Open No. 2013-116128 of Patent Document 1, it is possible to adjust the tension of the feeding belt of the soil supply device, 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.

  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.

  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. However, there is a problem that there is no standard for knowing the adjustment positions of the left and right tension mechanisms. The present invention intends to eliminate such problems.

  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 the top, a soil feed belt is provided below the soil supply hopper, and the soil feed belt Is driven 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 of the frame side plate. A tension mechanism that adjusts the tension; the tension mechanism projects a screw pipe from the insertion hole of the support plate provided in the frame side plate to the front-rear direction, and a screw shaft that moves back and forth in the screw pipe; The driven shaft bearing is provided at the end of the screw shaft, and the screw pipe and the female screw of the screw pipe are rotated by rotating the screw pipe around the axis. It is possible to finely adjust the position of the driven shaft by moving the screw shaft between them, and a support shaft is provided in a direction orthogonal to the axial direction of the screw pipe, and an operation member is supported around the support shaft by a bearing. By rotating the operation 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 the tension position and the relaxation position.

  According to claim 2, in the soil supply device of the seedling box seeder according to claim 1, an operation member is provided at a portion where the screw pipe protrudes rearward from the support plate portion, and the operation member is formed of a screw pipe. An arc-shaped portion that is supported by a support shaft provided in a direction orthogonal to the axial direction and is rotatable in the front-rear direction about the support shaft is provided at one end of the operation member, and the support shaft is the center of the arc-shaped portion. By disposing the operation member back and forth with respect to the support shaft, the position of the support shaft is greatly moved before and after the center position of the arcuate portion by disposing the operation member back and forth about the support shaft. It is possible to switch between a relaxed state and a tensioned state of the feeding belt via a pipe and a screw shaft.

  In the soil supply apparatus of the seedling box seeding machine according to claim 1 or 2, the soil feeding belt tension mechanism configured by the operation member, the screw pipe, and the screw shaft is provided in the seedling box. Are arranged on the left and right sides of the soil supply belt.

  According to Claim 4, in the soil supply device for a seedling box seeder according to any one of Claims 1 to 3, the frame side plate is provided with a long hole part in which the driven shaft is moved back and forth. A scale indicating the position of the driven shaft is provided in the vicinity of the hole.

  As effects of the present invention, the following effects can be obtained.

  The soil supply device for a seedling box in a seedling box seeder as in claim 1, wherein 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, and the soil feed belt Is driven 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 of the frame side plate. A tension mechanism that adjusts the tension; the tension mechanism projects a screw pipe from the insertion hole of the support plate provided in the frame side plate to the front-rear direction, and a screw shaft that moves back and forth in the screw pipe; A bearing of the driven shaft is provided at an end of the screw shaft, and the screw pipe is rotated around an axis so that the screw shaft is screwed with a female screw of the screw pipe. It is possible to finely adjust the position of the driven shaft by moving by the amount of the screw, providing a support shaft in a direction perpendicular to the axial direction of the screw pipe, and supporting the operation member around the support shaft by bearing, By rotating the operation 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 the tension position and the relaxation position, so that the screw pipe and the screw shaft move simultaneously. Thus, the position of the driven shaft can be switched between a tension position and a relaxation position, and the tension can be adjusted without using a tool because a nut is not used for adjusting the tension.

  Further, since both the fine adjustment and the operation of switching between tension and relaxation can be performed by 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.

  According to a second aspect of the present invention, an operation member is provided in a portion where the screw pipe protrudes rearward from the support plate portion, and the operation member is supported by a support shaft provided in a direction orthogonal to the axial direction of the screw pipe, At one end of the operation member, an arc-shaped portion that is rotatable in the front-rear direction around a support shaft is provided, and the support shaft is disposed at a position shifted forward and backward from the center line of the arc-shaped portion to support the operation member. By pivoting back and forth about the shaft, the position of the support shaft is greatly moved before and after the center position of the arcuate portion, and the relaxed state and the tensioned state of the feeding belt via the screw pipe and the screw shaft Since the tension can be easily switched between tension and relaxation, the tension can be relaxed and stored when not in use.

  Since the tension mechanism of the soil feeding belt constituted by the operation member, the screw pipe and the screw shaft is arranged in the feeding direction of the seedling box and on the left and right of the soil feeding belt, the left and right positions are the same. Thus, the consumption of the feeding belt can be suppressed, and the left and right feeding soil amount can be made uniform. .

  According to a fourth aspect of the present invention, the frame side plate is provided with a long hole portion where the driven shaft moves back and forth, and a scale indicating the position of the driven shaft is provided in the vicinity of the long hole portion, so the positions of the left and right driven shafts are clear. It became easier to adjust.

The whole perspective view of the seedling machine seedling machine provided with the soil supply device for the seedling box. The whole perspective view of the soil supply apparatus for nursery boxes. The side view of the soil supply apparatus for nursery boxes. The rear view of the soil supply apparatus for nursery boxes. The top view of the soil supply apparatus for nursery boxes. The side structure schematic diagram of the soil supply apparatus for seedling boxes. The expansion schematic diagram of a belt tension mechanism. The side view which shows the state in which the soil supply belt was tensioned and locked. FIG.

  Hereinafter, a seedling box seeding machine will be described based on the drawings for carrying out the present invention.

  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.

  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.

  The present invention provides an apparatus that can be used for both the floor soil supply apparatus A and the covering soil 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.

  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 formed on the rear surface of the shutter 18. By operating the shutter opening / closing operation mechanism 10, the shutter moves up and down, so that the soil from the seed hopper 18 onto the soil feeding belt 7 is removed. When the seedling box moves rearward in the transport direction, the upper surface of the seedling box is regulated to change the carry-out amount of the floor soil.

  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.

  By changing the combination of the drive gear 30 and the power take-out gear 31, the supply amount of the floor soil supply device A can be changed fundamentally. 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

  A 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 a driven shaft 20. Thus, the shaft 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 structure of the soil supply device for the seedling box will be described in detail with reference to FIGS. 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 the rotation of 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, by rotating the operation member 23 around the axis of the screw pipe 22 by the tension operation lever 29, fine adjustment to move by the screw allowance is possible. 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.

  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, the support member 24 is moved in the front-rear direction of the nursery box through the center line of the arcuate portion 23a by rotating the operation member 23 in the front-rear direction of the moving direction of the seedling box by the tension operation lever 29. A lock mechanism L that moves the position greatly and switches between tension and relaxation of the soil feed belt 7 is provided.

  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 projects 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 projecting screw pipe 22 includes an operation member 23 and a tension operation lever for rotating the screw pipe. 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 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 shape 23a at the top, and the support shaft 24 at the end of the screw pipe is pivoted to a position eccentric to the front and rear in the moving direction of the nursery box relative to the center line of the arc. Support.

  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 back and forth 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 initially set, and the driving 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.

  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 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 rotates around the axis of the screw pipe 22. Accordingly, the position of the driven shaft 20 can be finely adjusted between the screw shaft 21 and the screw pipe 22, and the support shaft 24 is supported in the vertical direction around the support shaft 24 which is supported in a direction orthogonal to the axial direction of the screw pipe 22. 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.

  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 around the support shaft 24 of the screw pipe 22 in the front-rear direction, which is the advancing direction of the nursery box, so that the position of the support shaft 24 is greatly moved, and the soil is fed out. This allows a great adjustment for the tension and relaxation of the belt 7.

  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. A shaft is supported at a position shifted to the left and right from the center line, and is provided with a lock mechanism L that is fixedly moved in the left and right directions before and after the center position of the arc 23a to switch between a relaxed state and a tensioned state. is there.

  Further, the tension mechanism T of the soil feed 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 feed belt 7 in the feeding direction of the seedling box.

  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.

A floor soil supply device B seeding device C covering soil supply device D irrigation device E leveling device F moving direction of seedling box L lock mechanism R drive rail T tension mechanism H rail drive device 1 transport drive roller 2 transport driven roller 4 frame side plate 5 Drive roller 6 Drive roller 7 Soil feed 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 operating lever 30 Drive gear 31 Power take-out gear

Claims (4)

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 supply belt is provided below the soil supply hopper, the soil supply belt is wound between a driving roller and a driven roller, and the driven roller is driven by a driven shaft. The shaft is supported by the frame side plate, the driven shaft is configured to be movable back and forth in the elongated hole of the frame side plate, and includes a tension mechanism that adjusts the tension of the soil feeding belt,
The tension mechanism has a screw pipe protruding in the front-rear direction from an insertion hole of a support plate provided in the frame side plate, a screw shaft that moves back and forth in the screw pipe is provided, and an end of the driven shaft is provided at the end of the screw shaft. Finely adjust the position of the driven shaft by moving the screw pipe between the screw of the screw shaft and the female screw of the screw pipe by rotating the screw pipe around the shaft center. Enable
A support shaft is provided in a direction perpendicular to the axial direction of the screw pipe, an operation member is supported around the support shaft, and the operation member is rotated in the vertical direction so that the screw pipe and the screw shaft are A soil supply device for a seedling box seeding machine, wherein the soiled box is moved simultaneously and the position of the driven shaft can be switched between a tension position and a relaxation position. In the soil supply apparatus of the seedling box seeder according to claim 1,
An operation member is provided at a portion where the screw pipe protrudes rearward from the support plate portion, the operation member is supported by a support shaft provided in a direction orthogonal to the axial center direction of the screw pipe, and is provided at one end of the operation member. Is provided with an arc-shaped portion that is rotatable in the front-rear direction around the support shaft, and the support shaft is disposed at a position shifted forward and backward from the center line of the arc-shaped portion,
By rotating the operation member back and forth about 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 belt is moved through the screw pipe and the screw shaft. A soil supply device for a seedling box seeding machine characterized in that it can be switched between a relaxed state and a tensioned state. In the soil supply apparatus of the seedling box seeder according to claim 1 or 2,
A seedling box seeding machine comprising a soil feeding belt tension mechanism configured by the operation member, a screw pipe, and a screw shaft, arranged in a feeding direction of the seedling box and on the left and right of the soil feeding belt. Soil supply equipment. 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 sowing machine, wherein the frame side plate is provided with a long hole portion where the driven shaft moves back and forth, and a scale indicating the position of the driven shaft is provided in the vicinity of the long hole portion.

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