JP5365325B2 - Self-propelled seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling transplanter for transplanting seedlings on a plurality of rows of lines such as two or three rows per ridge. <P>SOLUTION: The self-propelled seedling transplanter is constituted by installing, on a traveling vehicle 2, a seedling-carrying platform 60 in the upper side of a seedling-feeding device 20 in which seedling cups 19 move horizontally in an oblong loop shape, a seedling raking device 74 for feeding the seedlings to the seedling cups 19 by raking the seedlings on the seedling-carrying platform 60, in one side of front and rear sides of the seedling-feeding device 20, and seedling-transplanting hoppers 3 for successively receiving the seedlings dropped from the seedling cups 19 of the seedling-feeding device 20, and transplanting the seedlings on the ridge surface, in the horizontal several positions at the other side. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a self-propelled seedling transplanter that scrapes off a seedling and plantes the seedling in a plurality of strips.

  As a self-propelled seedling transplanter, for example, a self-propelled seedling transplanter described in Japanese Patent No. 4182857 and Japanese Patent Application Laid-Open No. 2008-154533 is known.

Japanese Patent No. 4182587 JP 2008-154533 A

The conventional self-propelled seedling transplanting machine has a configuration in which seedlings for each planting are scraped from a pot seedling tray on a seedling stand by a seedling transplanting device and planted in a row on a cocoon.
On the other hand, an object of the present invention is to provide a seedling transplanter for planting seedlings in a plurality of rows such as two or three on a cocoon.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, the seedling mount (60) is placed on the upper side of the seedling supply device (20) on which the seedling cup (19) moves in a horizontal loop shape and circulates on the traveling vehicle body (2). A seedling receiving frame (68) provided with a seedling outlet (68a) is provided on the front end side of the seedling mounting table (60), and the seedling is transferred to the seedling mounting table (60) toward the seedling receiving frame (68) side. seedling transfer belt (64) is provided, seedling cleaning device for supplying seedlings cup (19) located in the front portion of the circular path of the scraped seedlings on seedling mounting table (60) seedling supply device (20) ( 74) , a plurality of seedling planting hoppers (3) for sequentially receiving seedlings falling from the seedling cup (19) at a plurality of left and right positions on the rear side portion of the circulation path of the seedling supply device (20) and planting them on the ridge surface provided, seedling cleaning device (74) is rotating case attached to the sub planting transmission case (69) (81, 82) The seedling scraping fixed claw (70a) and the seedling scraping movable claw, which are configured to operate by drawing a long loop trajectory (Q) up and down by being transmitted through the pot, and dividing and holding one seedling together with the pot container (70b) and a seedling pusher (80) for extruding the seedling and supplying it to the seedling cup (19) when the seedling scraping fixed claw (70a) and the seedling scraping movable claw (70b) release the holding of the seedling. The seedling cup (19) intersecting the locus (Q) is formed with a notch through which the seedling scraping device (74) passes, and the seedling receiving frame (68) is subplanted. While being attached to the transmission case (69), the inclination angle of the latter half part of the seedling receiving frame (68) is set to substantially the same angle as the inclination angle of the seedling mounting base (60), while the front half part of the seedling receiving frame (68) is Folded downward from the bent part with respect to the latter half, and viewed from the side of the aircraft The trajectory (Q) passes through the bent portion of the seedling receiving frame (68), and the seedling mounting base (60) is supported by a guide rail (78) formed integrally with the seedling receiving frame (68) on the front side. In addition, a self-propelled seedling transplanter configured such that the rear side is supported by the support roller (75) and is moved to the left and right by the left and right drive mechanism .

With this configuration, the seedling scraped off from the seedling mount 60 by the seedling scraping device 74 is supplied to the seedling cup 19 located at the front side portion of the circulating path of the seedling supplying apparatus 20, and after the circulating path of the seedling supplying apparatus 20 The seedlings are sequentially dropped from the seedling cup 19 that moves horizontally across the left and right sides of the side portion to the seedling planting hopper 3, and the seedlings are planted on the surface with the seedling planting hopper 3.

As described above, the seedlings on the seedling mount 60 are scraped off by the seedling scraping device 74, transported by the seedling cup 19 of the seedling feeding device 20, and planted in the cocoon by the seedling planting hopper 3. If two or three seedling planting hoppers 3 for sequentially receiving seedlings from the seedling cup 19 are provided, seedlings can be planted in two or three strips in a single run. In addition, since the first half of the seedling receiving frame 68 is bent downward with respect to the latter half of the seedling receiving frame 68, the seedling can be easily separated.

1 is an overall right side view of a seedling transplanter according to an embodiment of the present invention. 1 is an overall plan view of a seedling transplanter according to an embodiment of the present invention. It is a schematic plan view explaining a body control mechanism. It is a perspective view of a seedling planting hopper. It is a partial enlarged side view. It is a whole side view of the seedling transplanter of another example.

  A two-row planted seedling transplanter will be described below as an embodiment of the present invention. In the following description, the side on which the steering handle 8 is disposed is the rear, and the opposite side, that is, the side on which the engine 6 is disposed is the front. Then, the right hand side of the worker standing toward the front side of the machine body at the rear part of the machine body is set to the right, and the left hand side is set to the left.

  As shown in FIG. 1, the vehicle body 2 has an engine 6 and a transmission case 7 disposed at the front of the main frame 2a, and a steering handle 8 is provided at the rear end of the main frame 2a. A left and right wheel case 1 that swings up and down is provided on each of the rotating cylinder portions 9 a that rotate around the protruding left and right axle housings 9, and a rear wheel 10 is mounted on an axle 11 provided at the rear end of the wheel case 1. The left and right rear wheels 10 and the left and right front wheels 13 mounted on the front wheel shaft 12 provided at the front end of the vehicle body 2 are configured to travel. A hydraulic pump 6 a that is driven by the power of the engine 6 is provided on the left side surface of the engine 6. Further, a fuel tank 6b is provided on the upper side of the engine 6, and its upper part is covered with a bonnet 6c. Reference numeral 7a denotes a left / right support frame that rotatably supports a left / right rotation cylinder portion 9a having bases fixed to both left and right sides of the mission case 7.

  The vehicle body 2 is provided with an airframe control mechanism that moves the left and right rear wheels 10 up and down to control left and right inclination. As shown in FIG. 3, the airframe control mechanism is provided with an elevating hydraulic cylinder 15 as an elevating actuator from the hydraulic valve unit BU disposed on the mission case 7 to the rear, and the piston rod of the elevating hydraulic cylinder 15 An interlocking arm 16 as an arm that is long in the left-right direction of the machine body is attached to the distal end portion so as to be rotatable around a vertical axis. The interlocking arm 16 slides along the guide shaft 2b supported by the mounting member 2c fixed to the vehicle body 2. The left and right end portions of the interlock arm 16 and the left and right housing arms 14 fixed to the rotating cylinder portion 9a are connected via a left and right rod 18 as a connecting body. The left left rod 18 incorporates a rolling cylinder 17 as a rolling actuator, and the length can be changed by extending and contracting the rolling cylinder 17.

  The elevating hydraulic cylinder 15 and the rolling cylinder 17 are operated by controlling the hydraulic oil supplied from the hydraulic pump 6a by the elevating control valve 49 and the rolling control valve 48 in the hydraulic valve unit BU. When the lifting hydraulic cylinder 15 is expanded and contracted, the left and right rear wheels 10 move up and down in the same direction by the same amount, and the aircraft moves up and down. Further, when the rolling cylinder 17 is expanded and contracted, the left rear wheel 10 moves up and down with respect to the airframe, and the airframe tilts left and right.

  That is, the rear wheel 10 on this side is connected by the rod 18 on the other side by the expansion and contraction of the rolling cylinder 17 on one side connecting the one housing arm 14 and the side end of the interlocking arm 16. The vehicle body 2 can be rolled up and down with respect to the rear wheel 10 on the left side so that the vehicle body 2 can be horizontally inclined or parallel to the soil surface. The attitude can be controlled. And such raising / lowering control is performed by the detection of the raising / lowering sensor 5 mentioned later, and rolling control detects the right-and-left inclination state with the pressure-reducing tool 4 which performs the pressure-reducing action from the left and right sides with respect to the seedling planted at the planting position It is what you do.

  The elevating sensor 5 is provided at the lowermost part of the main frame 2a so as to rotate up and down. When the elevating sensor 5 rotates up and down, the rotation is transmitted to the elevating control valve 49 by the connecting rod 5d. The raising / lowering hydraulic cylinder 15 is operated in the direction in which the angle returns to the original (elevating control). As a result, the main frame 2a is controlled to move up and down so that the height from the upper surface of the cocoon to the main frame 2a is kept constant, so that the planting depth of the seedling is always constant regardless of the height change of the cocoon. Controlled, good seedling growth after planting.

  In addition, the rolling control valve 48 in the hydraulic valve unit BU is switched in conjunction with detection of the left / right inclination of the upper surface of the heel A due to a change in the relative height of the left / right pressure suppressor 4 described later. The rolling cylinder 17 is operated as appropriate to control the airframe to return to the left and right. In other words, the rolling control is performed by vertically swinging the left and right pressure suppression tools 4 provided on the rear side of the left and right seedling transplanting hoppers 3 arranged in parallel in the left and right direction of the machine body.

  The right and left sides of the seedlings planted in the field by raising and lowering the seedling planting hopper 3 are suppressed by the pressure suppressor 4 to stabilize the seedling planting posture. The sensor is configured to function as a sensor that detects left-right inclination. Each of the left and right pressure suppression tools 4 swings up and down independently for each right and left seedling planting position, detects the horizontal inclination of the planting soil surface by the difference in height of the swinging position, The one wheel case 1 is swung up and down by detecting the inclination, and rolling control is performed so as to maintain the vehicle body 2 parallel to the soil surface.

  Further, the left and right pressure suppressors 4 are raised to the non-grounding height by swinging the left and right wheel case 1 to the non-planting position (the state in which the left and right rear wheels 10 are moved to the lowest position to raise the machine body most). It is configured to work together. That is, when the aircraft is raised high, the left and right wheel cases 1 are moved to the lowest position to raise the vehicle body 2 to the non-seedling posture, and the left and right pressure suppressor 4 is raised in conjunction with the non-action posture position. It will be in a state where it does not interfere with running and turning, and the aircraft can be turned easily.

  An operation panel 8a is provided at the base of the steering handle 8, and a planting elevating lever 8b is provided on the operation panel 8a to manually operate the elevation control valve 49 to manually move the machine up and down and stop driving the planting unit. A main clutch lever 8c for turning on and off the main clutch is provided.

  A seedling supply device 20 that connects a plurality of seedling cups 19 in a turntable form and rotates and conveys them in a loop is provided at the approximate center of the vehicle body 2. Two seedling planting hoppers 3 are arranged on the left and right sides within the rear width in the middle to form a two-row planting configuration.

  At the front side of the seedling supply device 20, seedlings are supplied to the seedling cups 19 while being taken out from the seedling tray mounted in advance on the seedling mount 60 at the top of the vehicle body 2 by the seedling scraping device 74. When the seedling cups 19 rotate and move to the upper side of the seedling planting hopper 3, first, the bottom shutter of the first seedling cup 19 is opened and the stored seedlings are dropped into the left seedling planting hopper 3. Then, the seedling cup 19 that has moved next is alternately seeded so that the bottom shutter of the seedling cup 19 opened and accommodated at the position on the adjacent right seedling planting hopper 3 is dropped and supplied to the adjacent seedling planting hopper 3. Is supplied to the right and left seedling planting hoppers 3 and 3.

  This seedling planting hopper 3 is provided so as to be capable of opening and closing to the left and right with respect to the seedling planting bracket 22, and has a hopper 23 for dropping and guiding the seedling supplied from the seedling cup 19 on the upper side. The case 24 is driven up and down via parallel link arms 25 and 26. The seedling transmission case 24 is fixed to the frame part of the vehicle body 2 and is configured to be transmitted from the transmission case 7 part. The upper link arm 25 is moved up and down via the rod 28 by the crank arm shaft 27 rotated by a part of the transmission mechanism, and the seedling planting hopper 3 is planted on the locus P in the vertical direction.

  As shown in FIG. 4, the lever 29 of the seedling planting bracket 22 and the arm 30 formed at the base end of the lower link arm 26 are connected by an operation wire 31 to raise and lower the seedling planting hopper 3. Along with this, the seedling planting hopper 3 is opened and closed. By rotating the crank arm shaft 27, the seedling planting hopper 3 is moved up and down while drawing a substantially elliptical planting locus P, and the seedling planting hopper 3 is closed in a process of descending from the position immediately before the top dead center. Open at the lowest position, the ascending stroke remains open.

  The left and right seedling planting hopper 3 is configured to be displaced to the left and right outside from the position where it is mounted on the seedling planting transmission case 24. That is, the left seedling planting hopper 3 is configured to move up and down with respect to the seedling planting transmission case 24 via the parallel link arms 25 and 26, and the parallel link arms 25 and 26 are attached to the seedling planting transmission case 24. The base portion is bent toward the left outer side of the machine body, and a space portion K is formed in front of the left seedling planting hopper 3 attached to the distal ends of the parallel link arms 25 and 26. ing. By adjusting the left / right position (tread adjustment) of the left rear wheel 10, the left rear wheel 10 can be positioned in the space K, and the left rear wheel 10 can be disposed in the immediate vicinity of the left seedling planting position. Similarly, the right seedling planting hopper 3 is configured to move up and down with respect to the seedling planting transmission case 24 via parallel link arms 25 and 26, and the parallel link arms 25 and 26 are connected to the seedling planting transmission case 24. A structure in which a space K is formed in front of the right seedling transplanting hopper 3 attached to the distal ends of the parallel link arms 25 and 26 is configured to be bent from the attached base to the right outer side of the machine body. It has become.

  By adjusting the right / left position of the right rear wheel 10 (tread adjustment), the right rear wheel 10 can be positioned in the space K, and the right rear wheel 10 can be disposed in the immediate vicinity of the right seedling planting position. Therefore, seedlings can be planted at the position of the right and left ends of heel A.

Next, the configuration of the seedling stage 60 will be described.
On the upper side of the seedling supply device 20, the seedling transfer belt 64 of the seedling mount 60 is provided so that the front side is horizontal and the rear side is slightly lifted from the front to the rear in a side view. This is to prevent the seedling from being crushed on the front side and not hindering the movement of the seedling cup 19 that laterally moves to the lower side on the rear side.

  The seedling mount 60 is provided with a seedling transfer belt 64 that is wound around and stretched around a bottom plate space portion of a frame made up of left and right standing frames 61 and 61 and front and rear bottom plates 62 and 63. It has a structure. 65 is a belt winding drive roll, and 66 is a belt winding driven roll.

  The belt winding drive roll 65 is a drive cam fixed to a drive shaft extending from the planting part transmission case 67 so that the seedling mount 60 rotates by a certain amount when reaching the left and right ends. It is driven via an appropriate intermittent drive mechanism having a driven cam driven by However, the seedling transfer belt 64 is rotated by a certain amount (only one seedling width) when the seedling placing table 60 moves to the left and right ends, and the seedling placed on the seedling placing table 60 is transferred to the following seedling receiving frame. It is comprised so that it may move toward 68.

The seedling receiving frame 68 is located on the front end side of the seedling mounting table 60 and is attached to the sub-planting transmission case 69, and a seedling outlet 68a is provided at the left and right center. As shown in FIG. 5, the seedling receiving frame 68 has a shape in which the front half of the seedling receiving frame 68 is bent downward, and the tip part locus Q of the seedling cleaning fixing claw 70a and the seedling cleaning movable claw 70b described later is It is comprised so that the bending part may be passed. Therefore, since the front half of the seedling receiving frame 68 is bent downward, the interval b between the end pot seedling container a and the next pot seedling container a is opened, and the seedling can be easily separated. The inclination angle of the rear half of the seedling receiving frame 68 is set to be substantially the same as the inclination angle of the seedling mounting table 60 and is inclined from 15 to 20 degrees from the horizontal, and the inclination angle of the first half of the seedling receiving frame 68 is 50 from the horizontal. It is set to an angle inclined from 60 degrees to 60 degrees.

  Reference numeral 71... Is a seedling receiving rod made of a box, and is fixed at equal intervals on a mounting plate 72 laid horizontally between the left and right standing frames 61, 61 of the seedling mount 60 above the seedling receiving frame 68. The seedling receptacles 71 are provided so as to support the rear side of the pot seedling container a for each vegetable seedling. 73 is a brush made of polypropylene (which may be made of any material such as soft synthetic resin, animal hair, etc.), and hangs down on the mounting plate 72 like a seedling receiver 71. Provided on the seedling scraping device 74 side in front of the seedling receiving bowls 71.

  The seedling scraping fixed claw 70a and the seedling scraping movable claw 70b, which will be described later, enter the seedling mount 60 so as to sandwich the seedling receiving bar 71 between them and transfer one seedling (one pot container). Operates to hold separately.

75 rear support Hollow Naenodai 60 - shows the La, seedling mounting table 60 is fixed to the rear underside - le 76 The rear support Russia - in a state riding La 75, the planting unit transmission Engage with a rotating spiral shaft and a spiral groove of the spiral shaft that is transmitted and rotated by a seedling stage moving case 77 whose lower part is fixed to one side of the case 67 and moves to the left and right to connect to the bottom surface of the seedling stage 60 It is driven by a general left and right drive mechanism composed of the sliding cams, and reciprocates horizontally. Note that the front side of the seedling stage 60 is supported by a rectangular guide rail 78 formed integrally with the seedling receiving frame 68 via a sliding body fixed to the lower surface of the front part of the seedling stage 60. Has been.

  The seedling scraping device 74 is equipped with a seedling cleaning fixed claw 70a, a seedling cleaning movable claw 70b, and a seedling pressing tool 80 on a box-shaped scraping tool main body 79 whose inside is hollow. Is provided with an operation mechanism for holding the seedling scraping movable claw 70b so that the seedling is held or the seedling holding the seedling is opened. Then, the seedling pusher 80 has a speed at which the seedling cleaning fixed claw 70a and the seedling cleaning movable claw 70b are moved upward from the moment when the seedlings held by the seedling cleaning fixed claw 70a and the seedling cleaning movable claw 70b are released. It is configured to move downward at the same speed, and the seedling scraping fixed claw 70a and the seedling scraping movable from the position where the seedling is fed to the seedling cup 19 by the seedling scraping fixed claw 70a and the seedling scraping movable claw 70b. Even if the claw 70b moves up, it does not move.

  Then, the body 79 of the seedling scraping device 74 is pivotally attached to the first rotating case 81, the first rotating case 81 is pivotally attached to the second rotating case 82, and the seedling scraping device is attached. The first rotation case 81 and the second rotation case 81 are such that the locus Q drawn by the tips of the 74 seedling cleaning fixed claws 70a and the seedling cleaning movable claws 70b is narrow in the front-rear direction and long in the vertical direction. A transmission mechanism is built in the rotary case 82, and the base of the second rotary case 82 is pivotally attached to the sub-planting transmission case 69 by a pivot shaft 83.

In addition, although it comes to cross | intersect with the outer periphery of the seedling cup 19 by the locus | trajectory Q of the front-end | tip of the seedling cleaning fixed nail | claw 70a and the seedling cleaning movable nail | claw 70b, the notch part for passage is formed in the seedling cup 19. FIG.
On the rear side of the left and right seedling planting hoppers 3, left and right side suppression tools 4 are provided for suppressing and covering the left and right sides of the seedlings planted on the soil surface (畝) A by the left and right seedling planting hoppers 3, respectively. The pressure suppressor 4 has a pair of left and right symmetrical configurations with respect to each seedling planting position, and is configured to be rotatable around the support shaft 32 so that the front side and the upper side are inclined to open left and right. It is said.

  With the above configuration, the pot seedling tray is placed on the seedling stage 60, the operator holds the steering handle 8, puts the main clutch lever 8c, the planting elevating lever 8b is in the operating position, and the vehicle body 2 is positioned on the heel A. To plant seedlings. Then, the seedlings in the pot seedling tray are scraped off by the seedling scraping device 74 and supplied to the seedling cup 19 of the seedling feeding device 20, and the seedlings fall alternately from the seedling cup 19 on the right and left seedling planting hoppers 3, A seedling planting hopper 3 plants seedlings on the heel A.

  In this embodiment, the ridge A is planted in two strips, and the seedling planting interval of each strip is determined by the relationship between the traveling speed of the rear wheel 10 and the rotational speed of the seedling feeding device 20, and the right and left seedling planting hoppers 3 are on the same strip. It must run at such a speed as to plant seedlings. In addition, the interval between the stripes can be changed by making the interval between the right and left seedling planting hoppers 3 changeable.

  FIG. 6 shows an embodiment in which the rear wheel 10 is changed to a crawler traveling device 92. A frame 86 is extended downward from the front frame 85, and idle rollers 87 are arranged on the frame 86 in an arc shape. Then, the crawler 90 is attached to the drive wheel 88, the driven wheel 89, and the idler rollers 87, so that the crawler 90 is semicircular, and the drive wheel 88 is attached to the axle 11. Further, a support part for the seedling mount 60 is provided on the main frame 2 a, and the left and right crushing tools 4 are supported on the main frame 2 a between the left and right crawler travel devices 92 to approach the seedling planting hopper 3.

  With this configuration, the traveling device can be lightened, the tread width can be 45 cm, the ground contact portion of the crawler 90 can be lengthened with a simple configuration, and the ground contact portion of the crawler 90 has an arc shape. Even if the crawler traveling device moves up and down around the axle 11 according to the height of the heel, the length of the ground contact portion of the crawler 90 does not vary, so the traveling stability performance is always constant and the planted seedling stock is constant. And good seedling planting work.

  In addition, the rear end of the seedling stage 60 can be lowered on the front side of the steering handle 8 or the operation panel 8a, so that the seedling stage 60 can be easily replenished. The seedlings on 60 do not get in the way.

2 traveling vehicle body 3 seedling planting hopper 19 seedling cup 20 seedling supply device 60 seedling mounting stand 74 seedling scraping device

Claims (1)

On the traveling vehicle body (2), a seedling stage (60) is provided on the upper side of the seedling supply device (20) in which the seedling cup (19) moves in a plane in a horizontally long loop and circulates . The front end side is provided with a seedling receiving frame (68) having a seedling outlet (68a), and the seedling mounting base (60) is provided with a seedling transfer belt (64) for transferring the seedling toward the seedling receiving frame (68) side, A seedling scraping device (74) that scrapes off the seedling on the seedling mount (60) and supplies it to the seedling cup (19) located in the front part of the circulation path of the seedling feeding device (20 ) is provided . 20) A plurality of seedling planting hoppers (3) for sequentially receiving seedlings falling from the seedling cup (19) at a plurality of left and right positions on the rear side portion of the circulation path and planting them on the ridge surface are provided , and a seedling scraping device (74) Is transmitted through the rotating case (81, 82) attached to the sub-planting transmission case (69) and moved up and down. A seedling scraping fixed claw (70a) and a seedling scraping movable claw (70b) for splitting and holding a single seedling together with the pot container; The holding claw (70a) and the seedling scraping movable claw (70b) include a seedling pushing tool (80) that pushes out the seedling and supplies it to the seedling cup (19) when the holding of the seedling is released. Q) Form a notch through which the seedling scraping device (74) passes in the outer periphery of the seedling cup (19) that intersects with Q), and the seedling receiving frame (68) is attached to the sub-planting transmission case (69) The inclination angle of the rear half of the seedling receiving frame (68) is set to be substantially the same as the inclination angle of the seedling mounting base (60), while the front half of the seedling receiving frame (68) is bent with respect to the latter half. The seedling receiving frame (68) is folded when viewed from the side of the fuselage. The locus (Q) passes through the bent portion, and the seedling platform (60) is supported by a guide rail (78) formed integrally with the seedling receiving frame (68) on the front side, and a support roller ( 75), a self-propelled seedling transplanter configured to move left and right by a left and right drive mechanism .

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