JP2010046041A - Seedling transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seedling transplanter supplying fertilizer and the like right under the seedling root soil when planting the seedling, not to directly touch the fertilizer and the like with the seedlings so as to prevent from damages of the seedlings caused by the fertilizer and the like, so that the fertilizer and the like exert effects in accordance with extension of the roots of the planted seedling. <P>SOLUTION: In the seedling transplanter is equipped with a seedling planting device 23 for planting the seedlings on the soil by vertically moving a seedling planting body 5, the seedling transplanter has a fertilizer supplying route 40 for supplying the fertilizer and the like from a fertilizer applicator 39 to the inside of the seedling planting body 5, and drives the fertilizer applicator 39 in accordance with increase of the seedling planting body 5 to supply the fertilizer and the like to the seedling planting body 5 unsupplied with the seedling yet. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seedling transplanter for planting vegetable seedlings in a cocoon.

In the vegetable seedling transplanter, fertilizers and chemicals (hereinafter referred to as “fertilizer etc.”) are supplied to the surrounding soil of the seedling by using a fertilizer application device.
For example, in Japanese Patent Application Laid-Open No. 2007-43958, a main supply device that supplies pot-shaped seedlings to a seedling planting device is configured by a plurality of supply cups that move in a loop, and fertilizer is applied after supplying seedlings to the supply cups. A seedling transplanter for supplying fertilizer and the like from a device to a supply cup is described.

Japanese Patent Laid-Open No. 2006-14662 discloses a seedling planting body of a seedling planting apparatus having a seedling receiving unit and a drug receiving unit, and supplying seedlings and a drug to the seedling receiving unit and the drug receiving unit, respectively. Thus, a seedling transplanting machine is described in which when a seedling planted body is inserted into the soil, the seedling discharging section and the medicine discharging section are simultaneously opened to plant seedlings and supply fertilizer and the like to the soil.
JP 2008-99581 A JP 2006-14662 A

  In the first seedling transplanter, when the seedling and the drug are supplied to the supply cup of the main supply device, since the drug is planted directly on the root soil of the seedling, the fertilizer is directly applied to the seedling. Contact may cause seedlings to die or growth may be inhibited.

In addition, the second seedling transplanter has a drawback that the effect of the fertilizer or the like is difficult to work on the planted seedling because the fertilizer and the like are supplied to the side of the planted seedling at the time of planting.
Therefore, in the present invention, when seedlings are planted, fertilizer is supplied directly under the root soil of the seedlings so that the fertilizers do not directly hit the seedlings to prevent damage to the seedlings due to the fertilizers, etc. It is an object to provide a fertilizer application device for a seedling transplanting machine in which a fertilizer or the like exerts an effect as it grows.

The problems of the present invention are solved by the following technical means.
The invention according to claim 1 supplies fertilizer and the like from the fertilizer application device 39 to the seedling planting body 5 in a seedling transplanting machine provided with the seedling planting device 23 for raising and lowering the seedling planting body 5 and planting seedlings in the soil. The fertilizer supply path 40 is provided, and the fertilizer application device 39 is driven as the seedling planting body 5 rises, and the fertilizer application of the seedling transplanter is configured to supply fertilizer and the like to the seedling planting body 5 before the seedling supply.

  With this configuration, fertilizer and the like are supplied to the empty seedling planting body 5 at the timing when the seedling planting body 5 moves up and down, and then the seedlings are supplied to the seedling planting body 5. It will be planted in the soil with fertilizer supplied.

  Further, the invention according to claim 2 is the seedling transplanter according to claim 1, wherein the fertilizer guides 5c and 5d for receiving only the fertilizer and the like separately from the root soil of the seedling are provided below the seedling planting body 5. The fertilizer guides 5c and 5d should be opened and closed at the opening and closing timing of the seedling planting body 5.

  With this configuration, the fertilizer and the like previously supplied to the seedling planting body 5 are embedded in a deep position away from the root soil of the seedling to be supplied later.

  In the invention according to claim 1, since the fertilizer is planted on the soil in a state of being supplied to the lower side of the seedling, there is no harm caused by the direct contact of the fertilizer with the seedling, and the fertilizer etc. with the growth of the root of the seedling Is effective.

  Moreover, since the fertilizer etc. are supplied to the deep position away from the root soil of a seedling by the structure of Claim 2, fertilizer etc. do not contact directly to the hair root extended to the outside of the root soil, and more phytotoxicity is caused. To effectively prevent.

  A seedling transplanter 1 according to an embodiment of the present invention will be described below. In the following description, the side on which the steering handle 2 is disposed is the rear, and the opposite side, that is, the side on which the engine 3 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.

  The seedling transplanter 1 includes a beak-shaped seedling planting body 5 that can be opened and closed by being connected to a vertical movement mechanism 4 that is driven to move up and down to a machine body that includes a traveling device and a steering handle 2. The pair of left and right front wheels 6 supported to roll freely and the pair of left and right rear wheels 7 that are driven and rotated by the power of the engine 3 being transmitted. The front wheel 6 and the rear wheel 7 can be guided to the gutter groove, and the vehicle can travel with the center portion of the machine body above the gutter.

  A mission case 8 is disposed at the rear of the engine 3, and the output shaft of the engine 3 enters the mission case 8, and engine power is transmitted from the output shaft of the engine 3 to the transmission mechanism in the mission case 8. It has a configuration. A chain transmission case 9 is attached to both the left and right sides of the transmission case 8 so as to be pivotable up and down around a rotation fulcrum 9a, and is extended from the transmission case 8 to the left and right outer sides on the rotation fulcrum 9a of the chain transmission case 9. The front end of the wheel drive shaft enters and transmits driving power to the transmission mechanism in the chain transmission case 9. The traveling power is transmitted to the axle 10 extending rearward of the machine body and projecting to the rear end side via a transmission mechanism in the chain transmission case 9, and the rear wheel 7 is driven to rotate.

  A horizontal horizontal hydraulic rolling cylinder 11 that can be expanded and contracted is provided on the left side of the fuselage, and a balance rod 12 is attached to the tip of the piston rod of the horizontal horizontal cylinder 11 so as to be rotatable about the vertical axis. . Further, the right side of the connecting portion of the balance rod 12 is connected to the rod 13.

  When the piston rod 14a projects to the rear of the airframe based on the detection result of the saddle height detection sensor, which is provided in the center of the airframe, and includes a front pressure reducing wheel 15 described later. The left and right horizontal control rolling cylinder 11 also moves rearward, and the arm 16 connected to the rod 13 and the rolling cylinder 11 pivots rearward in a side view of the machine body. As a result, the left and right chain transmission cases 9 rotate. The left and right rear wheels 7 are moved downward about the moving fulcrum 9a, and the airframe is raised. On the contrary, when the piston rod 14a of the lifting hydraulic cylinder 14 is retracted forward, the left and right arms 16 are rotated forward, and accordingly, the chain transmission case 9 is rotated upward around the rotation fulcrum 9a. As a result, the left and right rear wheels 7 are raised and the aircraft is lowered.

  Further, when the left and right horizontal control rolling cylinder 11 is extended and contracted, only the left chain transmission case 9 is moved up and down, and only the left rear wheel 7 is moved up and down to tilt the machine body to the left and right. The left / right horizontal control rolling cylinder 11 is configured to operate so that the airframe is horizontally horizontal based on a detection result of a sensor (not shown) that detects right / left inclination of the airframe relative to the left / right horizontal.

  The pair of front wheels 6 is rotatably attached to an axle 19 fixed to the side of the lower end of an arm portion 18 that extends downward from the left and right sides of the front wheel support frame 17 that extends from the left and right center position below the engine 3 to the left and right. .

  The steering handle 2 is attached to the rear end portion of the body frame 20 whose front end portion is fixed to the mission case 8. The body frame 20 is disposed at the center of the left and right sides of the body and extends rearward, and extends obliquely rearward and upward from the front and rear intermediate portion. The steering handle 2 extends rearward from the rear end portion of the body frame 20 to the left and right, and the rear end portions thereof serve as grip portions 2 a and 2 a of the steering handle 2. The left and right grip portions 2a, 2a of the steering handle 2 are set to an appropriate height so that the operator can easily grip the grip portions 2a, 2a with hands. In the example shown in the figure, the grip portions 2a, 2a are divided into left and right, but the left and right rear end portions of the steering handle 2 may be connected to each other left and right, and the connecting portion may be used as the grip portion 2a.

  The vertical movement mechanism 4 for operating the seedling planting body 5 is attached to a planting transmission case 22 that is transmitted by a transmission shaft 21 that is driven from within the mission case 8. In the planting transmission case 22, a transmission mechanism for transmitting power for moving the vertical movement mechanism 4 of the seedling planting body 5 up and down is provided.

  The transmission mechanism in the planting transmission case 22 includes an intermittent drive mechanism that stops the vertical movement mechanism 4 and the pair of left and right seedling planting bodies 5 at the highest position of the vertical movement or at a position near the vertical movement mechanism, And a clutch mechanism that stops the vertical movement mechanism 4 and the seedling planting body 5 from moving up and down. The time for stopping by the intermittent drive mechanism is adjusted by a speed change mechanism provided in the intermittent drive mechanism, and the adjustment between the seedling planting stocks by the seedling planting body 5 is adjusted by this adjustment.

  The seedling supply device 24 that supplies seedlings to the seedling planting device 23 including the seedling planting body 5 receives seedlings from above and stores seedlings as a plurality (32 in total) of seedling containers. A cup 25, a moving mechanism 26 for moving the seedling supply cup 25 so as to pass over the seedling planting body 5, and a bottom lid 25 a at the bottom of the seedling supply cup 25 at the upper position of the seedling planting body 5. An opening mechanism 27 serving as a seedling dropping supply mechanism that drops seedlings accommodated inside and supplies seedlings to the seedling planting body 5 is provided.

  The seedling supply cup 25 has a cylindrical body that opens up and down and a bottom lid 25a that opens and closes an opening on the lower side of the cylindrical body, and is connected to each other in a loop shape. The moving mechanism 26 is configured to rotate around an oval loop trajectory that is long to the left and right as viewed from above. The opening mechanism 27 is configured to open the bottom lid 25 a of the seedling supply cup 25 at a position above the seedling planting body 5. The seedling supply device 24 is configured to supply the seedlings by moving the seedling supply cup 25 around the two seedling planting bodies 5 in one round.

  A cylindrical outer peripheral portion is formed on the outer periphery of the seedling supply cup 25, and an engagement portion (round hole) that engages with the cylindrical outer periphery in a freely rotatable manner is provided to connect the two seedling supply cups 25. A plurality of bodies 28 are provided, the engaging part of the connecting body 28 is rotatably engaged with the outer peripheral part of the cylinder of the seedling supply cup 25, and the adjacent seedling supply cup 25 is rotatable about the outer peripheral part of the cylinder as a rotation axis. A plurality of seedling supply cups 25 are connected to each other. In other words, the seedling supply cup 25 and the connecting body 28 are connected like an endless chain. As a result, the seedling supply cup 25 supplies the seedlings from the seedling supply cup 25 to the seedling planting body 5 because the distance between the seedling supply cup 25 and the adjacent seedling supply cup 25 does not change regardless of whether the seedling supply cup 25 moves linearly or circularly. Therefore, the seedling supply cup 25 is less likely to be displaced with respect to the seedling planting body 5, and the seedling supply is properly performed, so that an accurate seedling can be transplanted.

  The moving mechanism 26 wraps the seedling supply cups 25 that are connected to each other like an endless chain by engaging them with arcuate cutouts on the outer circumferences of the sprockets 29 and 29 provided on the left and right sides. The seedling supply cup 25 is rotated in the counterclockwise direction in plan view of the machine body by driving and rotating the sprockets 29 and 29 with the power extracted from the planting transmission case 22. Each rotary shaft 30 to which the winding sprocket 29 is rotatably attached is attached to a support frame 31 that extends from the planting transmission case 22 to the left and right, and is output upward from the planting transmission case 22. 32 is transmitted through the drive sprocket 33, the chain 34, and the driven sprocket 35 to the rotating shaft 30 that rotates integrally with the driven sprocket 35.

  The driven sprocket 35 and the winding sprocket 29 are coupled by a bolt 36 so that both rotate integrally. Therefore, the circumferential movement path of the seedling supply cup 25 includes left and right semicircular arc-shaped portions 37 and front and rear linear portions 38 connected to the arc-shaped portion 37. The seedling supply cup 25 moves to the right in the linear portion 38 on the rear side so as to pass above the right and left seedling planting bodies 25, and the seedlings are transferred to the seedling planting body 5 in the linear portions 38. The left and right drop supply positions are set. The left and right pivot shafts 30 around which the seedling supply cup 25 circulates are arranged on the inner side of the left and right rear wheels 7 and on the rear side of the axle 10 position of the rear wheels 7. The seedling planting body 5 is arranged on the rear side of the axle 10 position of the rear wheel 7.

  The bolt 36 is screwed into the screw hole of the driven sprocket 35 from below through an arc-shaped long hole 29a provided in the winding sprocket 29 that is long in the rotational direction. Therefore, by loosening the bolt 36, the rotational phase of the driven sprocket 35 and the winding sprocket 29 can be changed and adjusted within the range of the arc-shaped elongated hole 29a. Since there is only one bolt 36, the rotational phase of the driven sprocket 35 and the winding sprocket 29 can be easily changed. The adjustment range by the arc-shaped long holes 29 a is set to the arrangement pitch of the seedling supply cup 25 in the winding sprocket 29. With this arc-shaped long hole 29a, bolt 36, etc., seedling supply for accommodating seedlings to be dropped and supplied to the seedling planting body 5 when the left and right seedling planting bodies 5 are moved upward in accordance with the change of the left and right fall supply positions. This is a turning timing changing mechanism that changes the turning position of the seedling supply cup 25 with respect to the operation of the vertical movement mechanism 4 so that the cup 25 reaches the drop supply position.

  The seedling planting device 23 moves up and down between a beak-shaped seedling planting body 5 whose tip is directed downward, and a position where the lower end of the seedling planting body 5 is above the farm scene and a position below the farm scene. A vertical movement mechanism 4 for moving the seedling planting body 5 up and down, a closed state in which the lower end portion of the beak-shaped seedling planting body 5 is closed and a seedling is received from above and a seedling can be accommodated inside, and the lower end of the seedling planting body 5 An opening / closing mechanism 50 for opening and closing the seedling planting body 5 is provided in an open state in which the part opens left and right and the seedling accommodated inside can be released downward.

  This seedling transplanter 1 has a configuration of a plurality of row plantings in which a plurality of seedling planting bodies 5 are arranged on the left and right at a set interval. In this example, two seedling planting bodies 5 are arranged on the left and right at a set interval. It has a double-row planting structure.

  The two seedling planting bodies 5 are attached to the vertical movement mechanisms 4 provided on the left and right sides of the planting transmission case 22, respectively. A beak-like seedling planting body 5 with the tip facing downward is composed of a left seedling planting body 5L and a right seedling planting body 5R, and is divided into left and right parts. The body 5R rotates in the left-right direction to open the lower end. In addition, the right and left seedling planting bodies 5 are configured to vertically move and open and close synchronously by the vertical movement mechanism 4 and the opening / closing mechanism 50, and to plant two seedlings in a row on the farm field.

  The seedling guide 51 is a cylindrical body that is provided above the seedling planting body 5 and guides the seedling supplied from the seedling feeding device 24 into the seedling planting body 5. The seedling planting body 5 can be accurately supplied.

  The vertical movement mechanism 4 of the seedling planting body 5 is provided on both right and left sides of the planting transmission case 22. Specifically, the upper lifting link 52 and the upper lifting link 52 connected to the seedling planting body 5 with the front part mounted on the pivoting fulcrum shaft 58 projecting to the left and right sides of the planting transmission case 22 so as to freely rotate up and down. A lower raising / lowering link 53 having a front portion mounted on the moving fulcrum shaft 63 so as to be freely rotatable up and down and a rear portion connected to the seedling planting body 5, and a driving shaft 54 that is driven to rotate and protruded from the side portion of the planting transmission case 22. And a drive arm 55 attached to the drive shaft 54 so as to rotate integrally therewith, and an interlocking arm 56 rotatably connected to the rotation outer peripheral side end portion of the drive arm 55 and the upper lifting link 52. is doing. The rear end portions (rotating tip portions) of the upper and lower elevating links 52 and 53 are pivotally attached to and connected to the connecting member 57. The seedling planting body 5 is attached to the connecting member 57.

  Therefore, when the drive arm 55 is driven and rotated by the rotation of the drive shaft 54, the elevating links 52 and 53 move up and down, and the left and right seedling planting bodies 5 move up and down. The lower end portion of the seedling planting body 5 is positioned above the field scene at the ascending position of the vertical movement, and the lower end portion of the seedling planting body 5 is positioned below the field scene at the descending position.

  Further, the rotation fulcrum shaft 58 of the upper elevating link 52 is provided at a position that is eccentric from the center axis of the output shaft 59 at the tip of the planting output shaft 59 that projects from the planting transmission case 22 and rotates. The rotation of the planting output shaft 59 rotates about the axis of the planting output shaft 59 around the radius (the distance between the rotation fulcrum shaft 58 and the axis of the planting output shaft 59) as a radius. The vertical fulcrum shaft 58 moves back and forth during the up-and-down movement of the lifting / lowering link 52, so that the seedling planting body 5 is tilted back and forth during the up-and-down movement, and the seedling planting body 5 is moved up and down along a loop-like operating locus. It is configured to move.

  Next, the opening / closing mechanism 50 of the seedling planting body 5 will be described. The end of the inner wire 61a of the opening / closing cable 61 is connected to the tip of the left opening / closing arm 60 provided on the left seedling planting body 5L, and the right opening / closing arm is provided on the right seedling planting body 5R. An end of the outer cable 61b of the opening / closing cable 61 is connected to the distal end of 62, and an operating arm 64 rotatably attached to a rotation fulcrum shaft 63 pivotally attached to the base of the lower lift link 53 is provided. The other end of the inner wire 61a of the opening / closing cable 61 is connected to the distal end of the operating arm 64, and the other end of the outer cable 61b of the opening / closing cable 61 is fixedly attached to the machine body side.

  FIG. 4 shows the left seedling planting device 23, and the right seedling planting device 23 is symmetrical with the left seedling planting device 23, so that the front end portion of the left opening / closing arm portion is shown. The end portion of the outer cable of the opening / closing cable is connected to the end portion, and the end portion of the inner wire of the opening / closing cable is connected to the tip portion of the right opening / closing arm portion. Then, the operating arm 64 is set by receiving the action of a cam attached so as to rotate integrally with a planting output shaft 59 that rotates and moves a rotation fulcrum shaft 58 pivotally attached to the base of the upper lift link 52. It is set as the structure rotated to the front side at timing. As a result, when the seedling planting body 5 moves up and down by the drive rotation of the drive shaft 54 and reaches the lowered lower end position, the operating arm 64 is rotated forward by the change of the operating position of the cam, and the outer cable of the opening / closing cable 61 The inner wire 61a is pulled to the right with respect to 61b and the left opening / closing arm 60 and the right opening / closing arm 62 rotate so as to approach each other, and the right seedling planting body 5R rotates to the right. The left seedling planting body 5L is rotated to the left in conjunction with the above, and the lower side of the seedling planting body 5 opens to the left and right, and opens downward. Then, the seedling planting body 5 rises and the operating arm 64 rotates to the original position (rear side) with respect to the seedling planting body 5 due to the change of the cam action position, so that the inner wire 61a of the opening / closing cable 61 is loosened. The lower part of the seedling planting body 5 opened to the left and right is closed by a spring 65. The left seedling planting body 5 </ b> L and the right seedling planting body 5 </ b> R are urged to rotate by the spring 65 toward the side where the lower part of the seedling planting body 5 is closed.

  Respective rotation front end portions (rear end portions) of the upper and lower lift links 52 and 53 of the vertical movement mechanism 4 are connected to a connection member 57 via upper and lower connection shafts 66 and 67, respectively. The connecting member 57 includes a plate 68 that is triangular in a side view on the left and right sides, and the left and right plates 68 sandwich the tip ends of the upper and lower elevating links 52 and 53. A boss 69 extending in the left-right direction is provided. In addition, the connecting shafts 66 and 67 and the boss 69 are arranged in the vicinity of each triangular apex of the plate 68 in a side view, and the boss 69 is arranged on the rear side of the upper and lower connecting shafts 66 and 67. The upper and lower connecting shafts 66 and 67 and the upper and lower elevating links 52 and 53 do not get in the way when a position adjusting shaft 70 described later is slid with respect to the boss 69. The left and right plates 68 are substantially equilateral triangles, and the upper and lower connecting shafts 66 and 67 are turned upside down so that the connecting member 57 can be attached. The boss hole of the boss 69 has a hexagonal shape (polygonal shape).

  On the other hand, a hexagonal (polygonal) position adjusting shaft 70 extending in the left-right direction is fixedly provided at the base of the seedling planting body 5. Accordingly, the position adjusting shaft 70 is inserted into the boss 69, the seedling planting body 5 is supported by the connecting member 57, and the position adjusting shaft 70 is slid with respect to the boss 69 and moved in the left-right direction. The left and right positions of the body 5 can be changed.

  The change of the left and right position of the seedling planting body 5 is a distance corresponding to the arrangement pitch in the seedling supply cup 25 so that the seedling planting body 5 is positioned below the drop supply position in accordance with the change of the drop supply position of the seedling supply device 24. The length of the position adjusting shaft 70 is set so that the position can be changed.

  The position adjusting shaft 70 can be fixed so as not to move left and right with respect to the boss 69 by a set bolt 71 provided on the boss 69. When the position adjusting shaft 70 is moved left and right, the set bolt 71 is loosened and moved. Yes. The set bolt 71 is provided on the rear side of the boss 69 and the position adjusting shaft 70, and can be easily tightened or loosened from the rear side without the lifting links 52 and 53 being in the way.

  In addition, the opposing vertex of the hexagonal shape (polygonal shape) of the cross section of the position adjusting shaft 70 is positioned vertically, and the section coefficient for bending in the vertical direction is improved. The strength required to support the cantilever 5 can be obtained. In addition, a groove 72 serving as a guide for the right and left position of the seedling planting body 5 is provided on the outer periphery of the position adjusting shaft 70 at an appropriate position. By aligning the groove 72 with the end of the boss 69, a narrow planting space can be formed. It can be adjusted to the left and right positions of the seedling planting body 5 at the time of the ligaments, and the position of the seedling planting body 5 can be easily changed.

  Then, while the vertical movement of the seedling planting body 5 is operated for one cycle by the vertical movement mechanism 4, the seedling supply cup 25 moves around the arrangement pitch (for two seedling supply cups 25 in a row) in each cycle. The timing at which the bottom cover 25a of the seedling supply cup 25 opens at the drop supply position of the seedling supply device 24 is set so that the seedling planting body 5 rises to a position directly below the seedling supply cup 25. Thereby, the seedling supply cup 25 can supply the seedlings simultaneously without passing the seedling supply leakage to the two seedling planting bodies 5 while passing through the upper part of the two seedling planting bodies 5 in series. It will be possible to supply seedlings to the two seedling planting bodies 5 without leaving a seedling supply cup 25 that has not been supplied with seedlings after passing over the planting body 5, and the seedling supply operation can be performed with a margin, In addition, seedlings can be reliably supplied to the two seedling planting bodies 5.

  A fertilizer pipe (fertilization supply path) 40 leading to the seedling guide 51 of the seedling planting body 5 is connected to a fertilizer feeding device 41 provided on the step 80, and the fertilizer and the like of the fertilizer application 39 is supplied into the seedling planting body 5. To do. The one-way clutch shaft 43 of the fertilizer feeding device 41 of the fertilizer application device 39 provided on the step 80 is rotated by the clutch arm 44 that acts so as to rotate at the timing when the operating arm 64 rotates to the front side. Is supplied into the seedling planting body 5. The fertilizer supply timing is such that the left seedling planting body 5L and the right seedling planting body 5R of the seedling planting body 5 are closed and rising, and before the seedling is supplied to the seedling planting body 5, the fertilizer and the like are rooted in the seedling. On the underside. The fertilizer tank 42 of the fertilizer application device 39 is on the step 80 on the right lateral front side of the seat 79, so that the operator can check the remaining amount and supply easily.

  The seedling transplanter 1 has front and rear pressure wheels 15 and 73, and the pair of front pressure wheels 15 not only level the surface before planting the seedling but also serve as a sensor wheel for adjusting the height of seedling planting. In addition, it has a function of adjusting the height of the airframe by operating and controlling the hydraulic valve (not shown) in the transmission case 8 according to the grounding position of the front pressure reducing wheel 15 to operate the lifting hydraulic cylinder 14. Further, the rear pressure ring 73 reduces the soil around the seedling while covering the periphery of the planted seedling. The front and rear pressure-reducing wheels 15 and 73 can be accommodated on the upper side by operating the lever 74 when the vehicle is turning.

  A left and right support shaft 76 extending in the left-right direction is provided at the pivoting tip of an arm 75 that rotates up and down integrally with the lever 74, and the lower end of the vertical support shaft 77 provided so as to penetrate the left and right support shaft 76 vertically. A rear pressure wheel 73 is rotatably provided at the part. In addition, the said up-and-down support shaft 77 is provided for every planting strip, and two are provided in right and left. The left and right support shafts 76 include left and right movable parts through which the upper and lower support shafts 77 penetrate, and a fixed part connected to the arm 75 between the left and right movable parts, and the movable part is the fixed part. On the other hand, it is configured to slide in the direction of the shaft 76 (left and right direction). Accordingly, the rear pressure wheel 73 can be moved left and right by sliding the movable part in accordance with the change in the left and right positions of the left and right seedling planting bodies 5. In addition, it is good also as a structure which the front pressure wheel 15 also moves right and left according to the back pressure wheel 73 moving right and left.

  Above the bonnet 78, a seat 79 facing backward is provided so as to face the seedling supply device 24 side, and a flat step 80 for placing a foot between the seedling supply device 24 is provided. The seat 79 is supported by the airframe via a support frame 81 that extends upward through the left and right sides (right side) of the bonnet 78.

The step 80 includes a main step 82 disposed between the seat 79 and the seedling supply device 24 in plan view of the body, and sub-steps 83 provided on the left and right sides of the seat 79 and the bonnet 78. The sub-step 83 extends forward and backward from the front end portion of the airframe to near the main step 82, the front portion 83a is configured to be one step lower than the rear portion 83b, and allows an operator to get on and off from the front end portion of the airframe. It is configured. An elevating mechanism for elevating the wheel (rear wheel) 7 can be arranged below the rear portion 83b which is an upper stage of the sub-step 83, and the airframe space is effectively used to make the airframe compact. .

  Further, a chain transmission case 9 serving as a traveling transmission case that rotates up and down can be disposed below the rear portion of the substep 83 in accordance with a tread change of the wheel (rear wheel) 7. In addition, a rising portion 82a is provided at the front end of the main step 82 so as to be inclined upward and the operator's foot sitting on the seat 79 contacts the vertical movement mechanism 4 of the seedling planting device 23 by the rising portion 82a. Protects against this. Further, by positioning the rising portion 82a below the seedling supply device 24, the longitudinal length of the machine body can be shortened. Moreover, the main step 82 is provided with the rising portion 82a, whereby the strength is improved.

  It should be noted that at the rising portion 82a, the driving of the left and right rear wheels 7, the seedling planting device 23, and the seedling feeding device 24 for turning on and off the main clutch lever 84 and the left and right rear wheels 7 can be cut off. Left and right side clutch pedals 85 are provided, and an operator sitting on the seat 79 can stop the aircraft and correct the traveling direction of the aircraft.

  In the above description, the sub-step 83 is provided on both the left and right sides. However, the sub-step 83 may be provided on only one of the left and right sides. In this case, the sub-step 83 may be provided on the side without the support frame 81 (left side). If the step 83 is provided, the support frame 81 can easily get on and off by the sub-step 83 without obstructing.

  A front end of the airframe between the left and right front wheels 6 is provided with a front end sensor 86 that contacts the upper surface of the front U and detects the end of the front U. The front end sensor 86 is free from wrinkles due to the forward movement of the front body. However, it is configured to detect that the terminal end of the bag is reached by reaching the place and not sensing the upper surface of the bag. Based on detection of the heel end by the heel end sensor 86, the main clutch is automatically disengaged to stop the driving of the left and right rear wheels 7, the driving of the seedling planting device 23 and the seedling supplying device 24, and the machine body is stopped. At the same time, an alarm (for example, a warning sound such as a buzzer) is issued to notify the worker.

  An operator sitting on the seat 79 faces backwards with respect to the aircraft traveling direction and concentrates on the seedling replenishment work, so it is difficult to confirm the front of the aircraft, and the operator has not noticed that the aircraft has reached the end of the heel. There is a risk of causing an accident such as a collision with a structure. However, the saddle end sensor 86 automatically stops the aircraft at the end of the kite and notifies the end of the kite by an alarm. It is possible to perform the seedling replenishment work to the seedling supply device 24 without worrying about the situation in front of the machine body and the position of the end of the heel, thereby improving the planting work efficiency.

  The heel end sensor 86 is disposed at a position on the right side of the left and right center of the fuselage (treads of the left and right front and rear wheels 6 and 7), and the vertical movement associated with the vertical movement of the left rear wheel 7 by the rolling cylinder 11 is small. Therefore, the upper surface of the ridge can be detected accurately and stably. In addition, the heel end sensor 86 is a left-right position (a right front pressure wheel 15 and a seedling planting position on the right side) that avoids the front pressure wheel 15 and the seedling planting position of the seedling planting body 5 for controlling the height of the aircraft to the ground. Since it is provided on the left side), the soil at the planting position is not roughened and the planting accuracy is not lowered.

  Also, near the steering handle 2, there are a main clutch lever 87 for manually turning on and off the left and right rear wheels 7, the seedling planting device 23 and the seedling feeding device 24, a seedling planting device 28 and a seedling feeding device 32. And a planting operation lever 88 for manually turning on and off only the drive. The planting operation lever 88 can be used to operate the lifting hydraulic cylinder 14 to manually lift and lower the machine body. Then, a sensor (detection means) for detecting the operation position of the planting operation lever 88 is provided, and only when the seedling planting device 23 and the seedling supply device 24 are operated in the drive state by the planting operation lever 88, It is configured such that the automatic stop control and alarm of the airframe are activated by the aforementioned heel end sensor 86.

  As a result, the automatic stop control and alarm of the aircraft can be activated only during planting work, and the aircraft endless sensor 86 is unnecessarily detected by the heel end sensor 86 not detecting the upper surface of the heel when traveling or turning at the heel end. Can be prevented, and the operability is improved. A seating sensor for detecting that an operator is seated on the seat 79 is provided in place of or in combination with the above-described automatic stop control of the machine and the operation of the alarm by the planting operation lever 88. Only when the person is seated, the automatic stop control and warning of the aircraft may be activated. Moreover, it can be set as the structure which a warning is act | operated first by the detection of the end of the hull by the hail end sensor 56, and the body stops automatically after the predetermined time (several seconds later). The airframe may be automatically stopped by stopping the engine 3.

  On the left and right sides of the seat 79, a seedling stand 89 is disposed. The seedling stage 89 lacks a part of the rectangular bottom surface of the seedling storage frame (seedling box, seedling tray, seedling container, etc.) to be placed, and the outer edge of the lacked part is the seedling supply device 24. It has a shape that follows the arc-shaped portion 37 of the orbital movement trajectory of the seedling supply cup 25 so that it does not interfere with the seedling supply to the seedling supply cup 25 when the seedling storage frame is not placed. . In addition, the seedling stage 89 overlaps above a part of the seedling supply cup 25 of the seedling supply device 24, but is configured to be moved to the side of the machine body by the moving link mechanism 90, so that an operator sitting on the seat 79 can It can be arbitrarily moved to a position where it is easy to perform seedling replenishment work, and when getting on and off from the front end of the machine via step 80, it can be moved to the outside in the left and right direction from step 80 (sub step 83) so as not to obstruct getting on and off, When loading into a truck or storing in a warehouse, it can be moved outward in the left-right direction to reduce the left-right width of the aircraft.

  In addition, it is good also as a structure which can move the seedling mounting stand 89 to the left-right direction outer side to the position which does not overlap above the seedling supply cup 25 of the seedling supply apparatus 24. FIG. Further, the moving link mechanism 90 has a structure in which the link length of each link is different. When the seedling mounting base 89 is moved inward in the left-right direction for supplying seedlings to the seedling supply device 24, the seedlings are transferred. The stage 89 is configured to face the rearward and rearward direction. Thereby, the seedling replenishment work can be facilitated.

  FIG. 6 shows an embodiment in which a fertilizer application device 39 is provided above the seedling planting body 5. The timing shaft 47 is rotated from the planting transmission case 22 through the chain 46, and the feeding portion 48 of the fertilizer tank 45 is intermittently moved. The fertilizer and the like are supplied to the seedling planting body 5 before manually supplying the seedling.

  Under the seedling planting body 5, seedling receptacles 5a, 5b that open forward and backward and cylindrical fertilizer receptacles 5c, 5d attached to the tips of the seedling receptacles 5a, 5b are provided. The seedling receivers 5a and 5b are reduced in diameter from the top to the bottom, and the fertilizer receivers 5c and 5d are cylindrical bodies with sharpened tips and receive only fertilizers and the like.

  Therefore, since the fertilizer etc. thrown into the seedling planting body 5 are collected in the fertilizer etc. receptacles 5c, 5d, and the seedling thrown into the seedling planting body 5 stays in the seedling receptacles 5a, 5b, the seedling planting body 5 is inserted into the ridge U. When seedlings are planted in, fertilizer and the like are supplied to a deep position away from the seedling root soil.

  The upper inner diameters of the fertilizer receptacles 5c and 5d are such that only the fertilizer and the like pass through. However, as shown in FIG. 7, a net 49 for receiving seedlings is provided at the bottom of the seedling receptacles 5a and 5b. But you can. Further, the fertilizer receptacles 5c and 5d can change the interval between the seedling and the fertilizer by changing the attachment position with respect to the seedling receptacles 5a and 5b or by exchanging it with another one.

In addition, the structure of the seedling planting body 5 in the seedling receivers 5a and 5b and the fertilizer receivers 5c and 5d in this embodiment can also be adopted in the first embodiment.
FIG. 8 shows an embodiment in which a fertilizer tank 91 is provided on the upper right side of the seedling supply device 24, and the transmission shaft 92 is rotated by a chain 97 from a drive shaft 98 that drives the moving mechanism 26 of the seedling supply device 24. Are intermittently opened and closed, and fertilizer and the like are supplied to the empty seedling supply cup 25 that moves in front of the operator, and the operator supplies the seedling to the seedling supply cup 25 containing the fertilizer and the like. The seedling supply cup 25 circulates and the bottom cover 25a opens at two locations where the guide plate 99 that receives the bottom cover 25a of the seedling supply cup 25 is cut, and the fertilizer and the seedling fall into the seedling planting body 5.

  As shown in FIG. 10, the inner bottom surface 25b of the bottom lid 25a of the seedling supply cup 25 has a conical shape with a sharp center so that fertilizers and the like accumulated on the bottom lid 25a come to the periphery. Further, the notch portion of the guide plate 99 is provided with a sub-guide plate 99a that is one step lower as shown in FIG. 11, and the bottom lid 25a of the seedling supply cup 25 that has moved to the notch portion is first slightly opened to add fertilizer or the like. I drop it first and then try to drop the seedling.

  In this embodiment, before and after the seedling supply device 24, provided under the seedling supply cup 25 on the outside of the rear seedling receiver 5b and the front fertilizer chute 94a leading to the front fertilizer receiver 94b leading to the inside of the front seedling receiver 5a. Further, a post-fertilizer chute 95a that leads to the post-fertilizer catch 95b is provided. By supplying fertilizer and the like to the seedling supply cup 25 and then supplying the seedling to the seedling supply cup 25, the seedling is planted on the ridge U in a state where the fertilizer and the like are supplied below the root soil of the seedling. Become. Whether to use the front fertilizer chute 94a or the rear fertilizer chute 95b can be selected as appropriate.

  FIG. 12 shows an embodiment in which a scraper 100 for scraping off mud adhering to the outer peripheral surface of the seedling planting body 5 is provided. The scraper 100 is rotated up and down by a pivot shaft 103 below a portion of the body frame 20 that rises obliquely rearward. A scraper lever 102 is provided, and a scraper arm 101 that is turned up and down by the rotation of the scraper lever 102 and attached with a scraper 100 made of a rubber plate at the tip is provided toward the seedling planting body 5. The scraper lever 102 is pulled upward by a tension spring 105, and the scraper lever 102 is restricted from rotating too much upward by a stopper 104 provided on the body frame 20. Therefore, when the operator depresses the scraper lever 102 as necessary, the scraper 100 comes into contact with the outer peripheral surface of the seedling planting body 5, and the mud adhering to the outer peripheral surface is scraped off by the vertical movement of the seedling planting body 5. .

The scraper 91 may be brought into contact with the seedling planting body 5 in conjunction with the planting part raising operation of the planting operation lever 88, that is, when the machine body is turned.
In addition, all the apparatuses which spread fertilizer and a chemical | medical agent were named generically, and it demonstrated using what is called a fertilizer application. Therefore, the fertilizer application device includes a fertilizer application device for spraying fertilizer and a drug spraying device for spraying a medicine.

It is a left view of a seedling transplanter. It is a top view of a seedling transplanter. It is a figure which shows a winding sprocket and its periphery. (A: plan view, b: perspective view) It is a perspective view which shows a seedling planting apparatus. It is a right view of a seedling transplanter. It is a left view of the seedling planting apparatus which shows another Example. It is a partial side view which shows the modification of the Example. Furthermore, it is a left view of the seedling planting apparatus which shows another Example. It is a partially expanded rear view of the same embodiment. It is a partially expanded side view of the same Example. It is a partially expanded front view of the same Example. Furthermore, it is a left view of the seedling planting apparatus which shows another Example.

Explanation of symbols

5 Seedling planting bodies 5c, 5d Fertilizer guide 23 Seedling planting device 39 Fertilizer 40 Fertilizer supply channel

Claims (2)

Fertilizer for supplying fertilizer and the like from the fertilizer application (39) into the seedling planting body (5) in a seedling transplanting machine provided with a seedling planting apparatus (23) for raising and lowering the seedling planting body (5) and planting seedlings in the soil A seedling provided with a supply path (40), drives the fertilizer application (39) as the seedling planting body (5) rises, and supplies fertilizer and the like to the seedling planting body (5) before the seedling supply Transplanter. Fertilizer guides (5c) and (5d) that receive only fertilizer etc. away from the seedling root soil are provided below the seedling planting body (5), and the fertilizer etc. guide (5c) at the opening and closing timing of the seedling planting body (5) The seedling transplanting machine according to claim 1, wherein (5d) should also be opened and closed.

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