JP2006067808A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, since a great number of seedling transplanters have forms that seedling supply seats on which operators get on are arranged in order to supply seedlings to seedling supply apparatuses, bodies are miniaturized and lightened, the seats are positioned and installed above engines and transmission cases, the positions of the centers of gravities of the bodies are raised and traveling stability is difficult to keep. <P>SOLUTION: The subject seedling transplanter has constitution that a seedling planting apparatus 6 composed of a pair of right and left seedling supply apparatuses 4 and a seedling-planting bill 5 that keeps and drops seedlings supplied from each of the seedling supply apparatuses 4 and plants the seedlings in soil is installed at the front part of a vehicle body 3 that has a pair of right and left front wheels 1 and a pair of right and left rear wheels 2 and drives and travels, a lifting and lowering apparatus 7 that has the seedling planting apparatus 6 and rises and falls, a transmission case 8, an engine 9, a backward projected operating handle 10, and the like, are laid from the central part of the vehicle body 3 to the rear and the seedling supply seats 11 are mounted at the rear sides of the seedling supply apparatuses 4 and at both sides of the rise and fall apparatus 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a seedling transplanting machine that allows seedlings to be planted while replenishing seedlings to a seedling supply device in a posture in which an operator gets on a seat of a vehicle body.

A technology that provides a seedling planter attached to the rear end of the planting link at the front of the front and rear four-wheel vehicle body, and a seedling supply seat at the top of the transmission case, engine, etc. (See, for example, Patent Document 1).
JP2003-325010A (first page, FIG. 1).

  In many cases, the seedling transplanter is provided with a seedling supply seat on which an operator is boarded in order to supply seedlings to the seedling supply device. Since the vehicle body is small and lightweight, the seat is provided on the upper side of the engine, the transmission case, etc., so that the center of gravity of the vehicle body becomes high and it is difficult to maintain running stability.

  The invention according to claim 1 accommodates a traveling vehicle body 3 having a pair of left and right front wheels 1 and a rear wheel 2, a bowl-shaped seedling planting device 6 for planting seedlings in a field, and seedlings to be supplied to the seedling planting device 6. The seedling supply device 4 in which a large number of the seedling storage cups 19 circulate around an oval locus that is long in the left-right direction of the aircraft in plan view, and an operator who supplies seedlings to the seedling storage cup 19 of the seedling supply device 4 is seated. The seedling supply device 4 is provided on the front side of the machine body, the seats 11 are arranged on the left and right sides of the seedling supply device 4, and the seedling planting device 6 and the seedling supply device are disposed between the seats 11. The seedling transplanting machine is characterized in that a lifting device 7 that lifts and lowers, an engine 9, a mission case 8 that takes out the power of the engine 9, and a steering handle 10 are arranged.

  According to a second aspect of the present invention, the traveling vehicle body 3 includes a vertical frame 14 on both the left and right sides and a vehicle body frame 17 having a substantially rectangular shape in plan view by the horizontal frames 15 and 16 at the front and rear ends. The front wheel 1 is disposed outside the front portion 17, the rear wheel 2 is disposed outside the rear portion, the lifting device 7 is disposed in the space between the left and right vertical frames 14, and the seat 11 is disposed on the left and right vertical frames 14. The seedling transplanter according to claim 1, wherein the seedling transplanter is supported.

  The invention described in claim 3 is characterized in that the place where the seedling stored in the seedling storage cup 19 of the seedling supply device 4 is dropped and supplied to the seedling transplanting device 6 is the front side position of the ellipse-shaped locus. A seedling transplanter according to claim 1.

  According to a fourth aspect of the present invention, there is provided a seedling mounting base 21 on which a supplementary seedling to be replenished to the seedling supply device 4 is provided between the left and right seats 11. Or a seedling transplanting machine.

  In the first aspect of the present invention, an elevating device 7 that raises and lowers the seedling planting device 6 along the center of the vehicle body 3, a mission case 8, an engine 9, a steering handle 10, and the like are arranged in the longitudinal direction of the body. Since the seedling supply seats 11 are arranged on the left and right sides of the lifting device 7, the seat 11 can be set as close as possible to the front seedling planting device 6 side, and the traveling vehicle body 3 at the time of work can be set as low as possible. The position of the center of gravity can be lowered, the seedling supply device 4 can be easily replenished, and the seat 11 can be easily boarded and exited. Moreover, the raising / lowering device 7 that lifts and lowers the pair of left and right seedling supply devices 4 and the seedling planting device 6 is configured to pass between the pair of left and right seats in a plan view of the body, so that the seedling supply device 4 and the seedling planting device 6 are It can be raised to a higher position and can be used for tall ridges.

  In the second aspect of the invention, the seat 11 is supported on the vertical frames 14 on the left and right sides, but the lifting device 7 that supports the front seedling planting device 6 and moves up and down is disposed on the space between the vertical frames 14. Since they are arranged, the configuration of the seedling planting device 6, the lifting device 7 and the like can be set at a low level, and the seat 11 serving as the weight portion can be stably supported.

  According to the third aspect of the present invention, the seedling planting device 6 for receiving and planting seedlings dropped and supplied from the seedling storage cup 19 of the seedling feeding device 4 has a position on the front side of the ellipse-shaped trajectory at the location where the seedlings are dropped and supplied. Therefore, as a form in which the entire seedling planting device 6 is positioned forward and the rear side part of the form of the turntable 20 is projected to the rear seat 11 side, the space part of the lower leg of the turntable 20 in front of the seat 11 Can be formed widely, and the seedling replenishing operation can be facilitated. Further, since this seedling planting gill 5 operates on the front end side of the seedling supply device 4, this maintenance can be facilitated. Furthermore, it is possible to facilitate the alignment of the seedling planting action, the monitoring and checking of the planting state, and the like.

  In the invention according to claim 4, since the seedling stage 21 is provided by utilizing the space in the upper part of the lifting / lowering device 7 at the center of the vehicle body 3, the transmission case 8, the engine 9, etc., the entire body is compact. become.

  And it makes it easy to perform the seedling replenishment action by the operator at the left and right side seats 11. Further, as a configuration, the seedling mounting base 21 is positioned at the center of the vehicle body 3, and the seedling planting device 6, the seat 11 and the like are arranged and configured symmetrically with respect to the seedling mounting base 21, so that the weight balance is good. It can be a vehicle body form.

  1 and 2, the vehicle body 3 of the seedling transplanter has a front body 1 and a rear wheel 2 on the front and rear outer parts, and a rear end of the body frame 17. The horizontal frame 16 is provided with an engine frame 25 extending rearward and a steering handle 10 at the rear end. A seedling planting device 6 is provided on the front portion of the vehicle body 3, and an engine 9, a transmission case 8 and the like are provided on the rear portion. In addition, a seat 11 is arranged at an intermediate portion between the seedling planting device 6 and the engine 9 or the like in the front-rear distance portion. When the seedling transplanter simply travels and moves, the operator can perform the steering operation while gripping the handle 10 and traveling. At the time of seedling planting work, the front wheel 1 and the rear wheel 2 can be placed on the groove surface B on both sides of the soil (saddle) surface A to guide travel, and the operator sits on the left and right seats 11, The seedling planting operation can be performed while the seedling supply cup 19 of the seedling supply device 4 is replenished with seedlings.

  The vehicle body frame 17 is formed in a substantially rectangular shape from left and right vertical frames 14 and horizontal frames 15 and 16 connecting the front and rear end portions. An engine frame 25 is provided in parallel from the center of the lateral frame 16 at the rear end toward the rear, and the handle 10 is provided at the rear end of the engine frame 25.

  A mounting bracket 26 is provided at the front end of the vehicle body frame 17, and a front wheel shaft 27 that rotatably supports the small-diameter front wheel 1 and a rotatable slope guide roller 28 are mounted on the mounting bracket 26. The front wheel arm 30 having the roller arm 29 and the like is attached. The front wheel 1 is provided outside the vertical frame 14. A rear axle case 18 is provided outside the vertical frame 14 at the rear end of the body frame 17, and the large-diameter rear wheel 2 is attached to the rear wheel shaft 31 on the outside. The vehicle body frame 17 is configured to be inclined forward and downward.

  By transmitting from the transmission case 8 through the wheel transmission shaft 32 and the transmission mechanism in the rear axle case 18, the rear wheel 2 can be driven to travel. The transmission case 8 has a transmission mechanism that receives the output rotation from the engine 9 and transmits each wheel transmission shaft 32 and the seedling planting transmission shaft 33 that is transmitted to the seedling planting device 6. The transmission mechanism includes a main clutch, a transmission gear, a forward / reverse switching gear, a side clutch that turns on and off transmission to the left and right rear wheels 2, and the like. On both the left and right sides of the engine frame 25, a tank frame 34 protruding from the horizontal frame 16 portion to the rear is provided to support a water tank 35 that stores water for irrigation. A cover 50 covers the engine 9 and the transmission case 8.

  The seedling planting device 6 is provided so as to be movable up and down with respect to the vehicle body frame 17 via the lifting device 7. An integral support bracket 36 is provided at the center of the rear lateral frame 16, and a pair of upper and lower lift links 37 in the form of parallel links are connected to the support bracket 36 so as to be vertically rotatable, and a seedling is connected to the link hitch 38 at the front end. The seedling planting frame 39 of the planting device 6 is detachably attached. A lift cylinder 40 is provided between the elevating link 37 and the horizontal frame 16, and is expanded and contracted by detecting the height of the soil (畝) surface by a level sensor (not shown) or the like of the lift cylinder 40, and the seedling planting device 6. Is raised and lowered to maintain a constant seedling planting depth with respect to the soil (畝) surface A. In addition, the lifting device 7 is provided with a balance spring mechanism for supporting the weight of the seedling planting device 6 in place of the lifting mechanism by expansion and contraction of the lift cylinder 40, and is configured to be movable up and down in a predetermined height region. Is also possible. In this embodiment, since the pressure roller 41 or the like is grounded to support the weight of the seedling planting device 6, the balance spring acts to maintain the ground pressure of the pressure roller 41 constant.

  A seedling planting transmission case 12 to which a pair of right and left seedling supply devices 4 and seedling planting baskets 5 are attached is attached to the upper part of the seedling planting frame 39, and a pressure reducing roller 41 for suppressing the soil (soil) surface A is installed to the lower part. Install the roller arm 42. The transmission mechanism in the seedling planting transmission case 12 rotates the seedling storage cup 19 of the seedling supply device 4 in response to an input from the seedling planting transmission shaft 33 and rotates the planting link 13 of the seedling planting basket 5 up and down. This seedling supply device 4 is supported on the left and right sides of the seedling planting transmission case 12 via support arms 45. The horizontally long oval turntable 20 is supported by the support arm 45, and a large number of seedling storage cups 19 are arranged on the rotating chain wound around the outer periphery to constitute a series of seedling storage cups 19. . The seedling storage cup 19 is rotated by a seedling supply shaft 46 rotated by a transmission mechanism in the seedling planting transmission case 12. The seedling planting ridges 5 that move up and down synchronously along the front sides of the turntables 20 are arranged at regular intervals to form a four-row planting form. Each of these seedling planting tubs 5 is attached to the left and right side portions of the seedling planting transmission case 12 at the front end portion of the planting link 13 in the form of a parallel link, and is driven up and down by the rotation of the crankshaft 47 on the side of the seedling planting transmission case 12 Is done. At the upper end of the cylindrical seedling planting tube 48 attached to the planting link 13, there is a hopper 49 for receiving the seedling dropped from the seedling storage cup 19, and at the lower end of the seedling planting tube 48 in the front-rear direction. A seedling planter 5 that opens and closes is provided. This seedling culvert 5 is in a closed position during the downward stroke from the top dead center position where the seedling is supplied to the bottom dead center position that pierces the soil (cocoon) surface in conjunction with the vertical rotation of the planting link 13. Yes, at the bottom dead center position, the seedling is planted in the planting hole by opening back and forth, and is operated so as to be maintained in the open posture in the ascending process over the top dead center position. The lower end portion of the seedling planter 5 that is lifted and lowered in this manner is actuated so as to draw an oblong planting locus D that is long in the vertical direction. The descending stroke of the planting locus D is drawn on the front side, and the rising stroke is drawn on the rear side. And, in the process of piercing the seedling planting pod 5 into the soil, it opens back and forth while moving from the front to the rear, forming a planting hole in the soil (cocoon) surface, and this formed planting The seedling can be planted by dropping it into the hole.

  The elevating device 7 is provided at the center of the vehicle body frame 17, and a seat post 52 is provided on the vertical frame 14 in front of the rear wheel shafts 31 on the left and right sides of the elevating device 7, and a seat is provided at the upper end. 11 is supported. The left and right seats 11 are provided to face the rear side of the seedling supply device 4, and a step panel 53 is provided on the vertical frame 14 at the foot. Above the elevating device 7, the transmission case 8, the engine 9, and the like arranged along the center of the vehicle body frame 17, a seedling stand 21 that is long in the front-rear direction is set at substantially the same height as the seedling supply device 4. Are installed horizontally. A seedling to be replenished to the seedling storage cup 19 is placed on the seedling mount 21, and an operator sitting on the seat 11 replenishes the seedling storage cup 19 of the seedling supply device 4 while taking seedlings from both the left and right sides. Is.

  A side clutch lever 54 is provided at the grip portion of the steering handle 10, and the vehicle body 3 can be steered by operating the side clutch of the rear wheel 2 transmission on the left and right steering side. In addition, a planting clutch lever 56, a transmission lever 57, and the like for turning on and off the transmission of the rear wheel 2 and the seedling planting device 6 can be arranged on the operation panel 55 of the steering handle 10 to operate the vehicle. The water tank 35 is connected to a water supply pump, a water injection circuit, a water injection nozzle or the like (not shown), and is a planted plant to be planted by each seedling planter 5 with a water injection nozzle while feeding water from the water tank 35. It is intended to irrigate the soil (soil) surface at the attached position.

  At the time of seedling planting, the front wheel 1 and the rear wheel 2 are guided in the groove B portion, and the guide roller 28 guides the side surface of the ridge from both the left and right sides. Suppress and level out. At this time, when the depth of the groove B greatly changes, the lifting link 37 is lifted and lowered by the expansion and contraction of the lift cylinder 40 to adjust the height of the seedling planting device 6 and the roller 41. When the groove B becomes deeper and the soil (畝) surface A becomes higher, the seedling planting device 6 and the like are raised, and conversely, when the soil (Ａ) surface A becomes lower, the seedling planting device 6 is lowered and these seedling planting cages are lowered. The planting depth by 5 and the soil (soil) surface A height by the pressure reducing roller 41 are kept constant.

  When the seedling receiving cup 19 is positioned on the front seedling planting 5 by turning around the turntable 20 of the seedling receiving cup 19, the bottom surface of the seedling receiving cup 19 is opened when the seedling planting 5 rises, The seedlings are dropped and supplied into the lower hopper 49. The seedling received by the hopper 49 is held in the seedling planting plant 5 in the closed posture. The seedling planting basket 5 pierces the soil (soil) surface A through the descending process of the planting locus D to form a planting hole, and plant the retained seedling into the planting hole. The seedling culvert 5 that maintains the open state from this seedling planting returns to the top dead center portion through an ascent process. Such seedling planting action of the seedling planting basket 5 is performed in synchronization with the left and right four-row planting arrangement. While the seedling storage cup 19 in each turntable 20 moves along the front side, the seedling is supplied to the hopper 49 and the seedling storage cup 19 becomes empty. While the empty seedling storage cup 19 is moved along the rear side, the operator of the seat 11 takes out the seedlings on the seedling mount 21 and replenishes each seedling storage cup 19.

  In such a configuration, the body frame 17, the front wheel 1, the rear wheel 2 as well as the pressure-reducing roller 41, the seedling supply device 4, the seedling transplanter 5, the lifting device 7, the seat 11, the transmission case 8, the engine 9, the handle 10, Since the tank frame 34, the seedling stage 21 and the like are disposed substantially symmetrically with respect to the center of the vehicle body 3, the balance between the left and right center of gravity can be improved. The planting link 13 that raises and lowers the seedling planting cage 5, the seedling planting frame 39 that is raised and lowered by the lifting link 37, and the like are raised and lowered by the height of the soil (面) surface A and the like, so a high interval portion is required. However, these are arranged in the space part located in the center part of the body frame 17, and can be set as low as possible without being restricted by other mechanisms. Moreover, since the seedling planter 5 is raised and lowered at the front end portion of the planting link 13, a vertical working area is set under a long front and rear span on the front side of the lifting device 7, and each lifting link 37, and The length of the planting link 13 can be set to be large and the elevation swing angle can be set to be small, and the configuration can be simplified. In addition, since the transmission case 8, the engine 9 and the like are arranged along the center of the rear side of the lifting link 7, the vehicle height can be configured low, and the center of gravity can be lowered to stabilize traveling. This makes it easier to perform walking maneuvers from the handle 10 at the rear end. Further, since the seats 11 are located on both the left and right sides of the lifting device 7 and the like, the center of gravity of the boarding can be lowered, and the weight is directly supported by the vertical frame 14 on the lateral side, thereby providing a stable support structure. can do.

  Further, the seedling planter 5 is moved up and down at the foremost end so that the turntable 20 of the upper seedling-receiving cup 19 protrudes rearward and the seedling replenishment by the operator is received at the rear side. The operator of the seat 11 can easily perform the seedling replenishing work with the feet inserted as much as possible below the turntable 20 without being obstructed by the lifting device 7 on the center side. Further, as described above, the configuration in which the elevating link 37 and the planting link 13 project forward in series can simplify these configurations, and the seedling planting plant 5 which is the most complicated mechanism. Since the parts are located on the front side of the turntable 20 and are arranged on the left and right, maintenance can be performed from these front opening parts, which can be facilitated. In addition, the visibility from the steering handle 10 at the rear end is improved, so that the seedling planting strips can be easily aligned.

  Next, mainly based on FIG. 3 and FIG. 4, in order to shorten the full length of the vehicle body 3, the raising / lowering apparatus 7 is comprised in the vertical form along an up-down direction. A vertical elevating frame 61 is erected in the center between the vertical frames 14, and the seedling planting frame 39 is guided to elevate by the elevating frame 61. A lift cylinder 40 is provided between the seedling planting frame 39 and the upper end of the lifting frame 61, and the seedling planting device 6 can be raised and lowered by the expansion and contraction of the lift cylinder 40. A step panel 53 is provided on the vertical frame 14 on the side of the elevating frame 61, and a steering arm 65 is provided on the step panel 53. The front wheel 1 can be steered by rotating the steering arm 65 around the steering shaft 63 of the front wheel 1. A tie rod 64 connects the left and right steering arms 65. The workers of the left and right seats 11 can steer separately or simultaneously. The roller arm 42 of the pressure reducing roller 41 is connected to the lower arm shaft 66 of the seedling planting frame 39 so as to be rotatable up and down. The lower end portion of the seedling frame 39 is connected to the front end of a swing arm 67 supported by the left and right side portions of the rear mission case 8 by the arm shaft 66. The handle frame 68 of the steering handle 10 can be pivoted back and forth around the handle shaft 69 at the rear end of the engine frame 25. When the handle 10 is gripped and the front wheel 1 part floats, The handle frame 68 is rotated backward to facilitate the front lift operation.

  Further, when the handle frame 68 is rotated to the front side, the planting clutch lever 56 is moved closer to the rear side of the seat 11 and the operator operates the planting clutch lever 56 from the seat 11 side to start seedling planting work. Or stop. Reference numeral 70 denotes a return spring. The handle shaft 69 is provided with a locking mechanism and can be fixed in any posture.

  Next, mainly based on FIG. 5, a bracket 76 having a long hole 75 extending in the vertical direction is provided at the front end of the vertical frame 14 so that the arm shaft 66 of the roller arm 42 of the pressure reducing roller 41 can be moved up and down. Guide the mating. The arm shaft 66 is fitted around a boss 77 at the lower end of the seedling frame 39 so as to be rotatable. The arm shaft 66 is integrally provided with an adjustment lever 78, and the adjustment lever 78 is engaged with a rack 79 beside the seedling planting frame 39, thereby changing and fixing the connecting angle of the roller arm 42 to the seedling planting frame 39. Thus, the planting depth of the seedling planting basket 5 can be adjusted.

The side view of a seedling transplanter. The plan view. The side view of the seedling planting machine which shows another Example. The perspective view of the front-wheel part. The perspective view of the pressure reduction roller part which shows a part another Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Car body 4 Seedling supply device 5 Seedling planting 6 Seedling device 7 Lifting device 8 Mission case 9 Engine 10 Steering handle 11 Seat 12 Seedling planting transmission case 13 Planting link 14 Vertical frame 15 Horizontal frame 16 Horizontal frame 17 Body frame 18 Rear axle case 19 Seedling storage cup 20 Turntable 21 Seedling stand

Claims (4)

The vehicle body 3 includes a traveling vehicle body 3 having a pair of left and right front wheels 1 and a rear wheel 2, a bowl-shaped seedling planting device 6 for planting seedlings in a field, and a number of seedling storage cups 19 for storing seedlings to be supplied to the seedling planting device 6. A seedling supply device 4 that circulates in an elliptical locus that is long in the left-right direction of the machine body in plan view, and a seat 11 on which an operator who supplies seedlings to the seedling storage cup 19 of the seedling supply device 4 sits,
The seedling supply device 4 is provided on the front side of the machine body, the seats 11 are arranged on the left and right behind the seedling supply device 4, and the seedling planting device 6 and the lifting device 7 for raising and lowering the seedling supply device between the seats 11, A seedling transplanter characterized in that an engine 9, a mission case 8 for taking out the power of the engine 9, and a steering handle 10 are arranged. The traveling vehicle body 3 includes a vertical frame 14 on both the left and right sides and a vehicle body frame 17 having a substantially square shape in plan view by horizontal frames 15 and 16 at the front and rear ends. The rear wheel 2 is disposed outside the rear portion, the lifting device 7 is disposed in the space between the left and right vertical frames 14, and the seat 11 is supported on the left and right vertical frames 14. The seedling transplanting machine according to 1. The seedling transplanter according to claim 1, wherein the seedling stored in the seedling storage cup (19) of the seedling supply device (4) is supplied to the seedling transplanting device (6) at a position in front of the machine body of the elliptical locus. The seedling transplanting machine according to any one of claims 1, 2, and 3, wherein a seedling placing stand 21 is provided between the left and right seats 11 for placing a supplementary seedling to be supplied to the seedling feeding device 4.

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