JPH0919207A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the adjustment of space between two transplanting rows when seedlings are taken out from two seedling trays, in which pots are placed in matrix states in a plane view, and transplanted on a paddy field. SOLUTION: A pair of seedling tables 11, in which two seedling trays are placed in parallel, are loaded on a sub-frame 101 in an adjustable manner regarding the right and the left position. The sub-frame 101 is loaded on a main frame 100 provided with a transverse driving shaft 107 and a longitudinal driving shaft 110 in a state where the sub-frame 101 is engaged with the transverse driving shaft 107, being capable of laterally reciprocating. A longitudinal driving transmission case and the longitudinal driving shaft 110 placed on the sub-frame 101 are connected to each other. The seedling trays placed on the seedling table 11 are intermittently driven in the longitudinal direction at the terminal of transverse feeding of the sub-frame 101. Further, a pair of unit frames 114 each provided with a set of a seedling taking out mechanism 12 and a seedling transplanting mechanism 13 are placed on the main frame in an adjustable manner regarding their lateral positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a seedling transplanter for transplanting crop seedlings such as vegetable seedlings into a field (field).

[0002]

2. Description of the Related Art Recently, vegetable seedlings have been efficiently grown using a synthetic resin seedling tray and then transplanted to the field. That is, after putting the bed soil into the pot portion formed and arranged in a matrix view in a seedling tray made of a synthetic resin thin plate, sowing seeds of vegetables and growing seedlings of an appropriate size, the seedlings of each seedling are put into practice. In a seedling transplanter that travels in a field as disclosed in Japanese Patent No. 48413, Japanese Utility Model Laid-Open No. 3-95718, and the like, a pair of picking claws from a seedling mounting table for transporting a seedling tray and a pot portion of the seedling tray. Equipped with a seedling take-out mechanism that picks up the seedlings, and an opening / closing transplantation cup for receiving the seedlings from this seedling take-out device and transplanting the seedlings into the field, picking the seedlings out of each pot part in this seedling tray, The seedling transplantation mechanism is used for transplanting to the field.

[0003]

However, in order to add the structure of the above-mentioned prior art to a plural-row planting such as a double-row planting and to adjust the left and right planting intervals (hereinafter referred to as the row intervals). Had a problem that the power transmission mechanism was complicated. Therefore, an object of the present invention is to provide a seedling transplanter which solves the above problems, has a simple structure, and is capable of easily changing the spacing between rows.

[0004]

In order to achieve the above object, the seedling transplanting machine of the present invention has a plurality of seedling trays in which pot portions of seedlings are arranged in a matrix in a plan view and are conveyed in parallel. Seedling stand for harvesting, a seedling take-out mechanism that picks up the seedlings from the pot section of each seedling tray with a pair of picking claws, and an openable and transplantable plant for receiving seedlings from this seedling take-out mechanism and transplanting them to the field. In a seedling transplanting machine for multiple-row planting, which comprises a seedling transplanting mechanism including a cup, a power transmission case and a transverse feed drive shaft and a vertical feed drive shaft that receive power from the power transmission case are provided in a main frame, In the frame, a sub-frame is mounted on the lateral feed drive shaft so as to be reciprocally movable in the lateral direction, and a plurality of unit frames in which a set of the seedling take-out mechanism and the seedling transplantation mechanism is mounted are provided. Left and right spacing The sub-frame mounts seedling trays for each seedling tray on the sub-frame so that the horizontal spacing can be adjusted, and the vertical feed drive receives power from the vertical feed drive shaft at the horizontal feed end position of the sub-frame. It has a case.

[0005]

Embodiments of the present invention will now be described with reference to the drawings. In FIG. 1, reference numeral 1 indicates a traveling body, and the traveling body 1 includes a steering handle 4 and a steering seat 5.
A vehicle body frame 2 including a vehicle body frame 2, a bonnet cover 3 for covering an engine (not shown) on an upper surface of a front portion of the vehicle body frame 2, a pair of left and right front wheels 6 and rear wheels 7 for supporting the front and rear portions of the vehicle body frame 2. It is composed of and.

Reference numeral 8 indicates a transplanting device disposed behind the traveling vehicle body 1. The main frame 100 of the transplanting device 8 is mounted on the traveling vehicle body 1 through a pair of upper and lower link mechanisms 9. It is mounted so as to be able to move up and down, and is configured to be moved up and down by the vertical movement of the lifting arm 10 by a hydraulic cylinder provided at the rear portion of the traveling vehicle body 1. Further, the main frame 100 is configured to be supported by the front wheels 14 and the rear wheels 15 with respect to the field.

In this embodiment, a double-row planting device 8 is used.
Is a seedling tray A composed of a flexible soft synthetic resin material in which a large number of pot portions A1 for growing seedlings are formed in a matrix in a plan view, in parallel to the left and right in the traveling direction of the traveling body 1. 2 seedling placing bases 11 for placing the seedlings in a circular shape and simultaneously transporting them in the traveling direction, and a picking claw 60 for taking out pot seedlings from the pot portion A1 of each seedling tray A on each seedling placing base 11 and the like 2 Two seedling retrieval mechanism 12,1
2 and two transplanting mechanisms 13 for reciprocating between each seedling taking-out mechanism 12 and the field to plant the seedlings taken out by the seedling taking-out mechanism 12 in the field ( 8), since the sub-frame 101 is configured to be reciprocally movable in the lateral direction by the lateral width dimension of the seedling tray A with respect to the main frame 100, the main frame 1
00 is a PTO shaft 99 protruding from the rear part of the traveling body 1.
A power transmission case 102 that receives power from the power transmission case 102 and a lateral feed drive shaft 107 that receives power from the power transmission case 102 and rotates. A boat-shaped keyed feed block 108 screwed to a reciprocating feed screw portion 107a formed on the lateral feed drive shaft 107 is fixed to the subframe 101.
The sub-frame 101 is laterally supported along a guide shaft 104 fixed to the main frame 100.

With this configuration, the subframe 101 is
The pot portion A1 in the seedling tray A in the lateral direction of the traveling body 1
Is laterally intermittently moved so as to have a stop section at each left-to-right interval L1, and laterally moves in the opposite direction at the end of this lateral movement. As a result, the two seedling stand 11 are reciprocally moved to the left and right all at once. To configure. The two seedling mounting bases 11 are mounted on the subframe 101 capable of laterally reciprocating movement so that the distance between them in the lateral direction can be adjusted, and the seedling trays A mounted on the respective seedling mounting bases 11 are fed laterally. At the end of the movement, the pot portion A1 is configured to intermittently feed one pitch along the traveling direction of the traveling machine body 1 (vertical direction interval L2 of the pot portion A1). That is, as shown in FIG. 2 and FIGS. 8 to 10, the vertical feed shaft 112 a rotatably supported by the subframe 101 is used to transmit the power in the vertical feed transmission case 105 fixed to one side of the subframe 101. Power is transmitted from the department. Further, a vertical feed drive shaft 110 is rotatably supported by the main frame 100 in parallel with the vertical feed shaft 112a, and is fed from the front machine power transmission case 102 through the chain sprockets 103a and 103c and the chain 103b. The vertical feed drive shaft 110 is rotated. Then, a pair of kick claws 111, 111 provided on the vertical feed drive shaft 110 at a distance of the horizontal feed distance kicks and rotates the driven cam 113 that swingably projects from the vertical feed transmission case 105, and the vertical feed shaft. 112a is intermittently rotated at the lateral feed end position of the seedling placing table 11 so that the pot portion A1 has a constant pitch L2.
It is configured to be intermittently vertically fed.

The structure of each seedling mounting table 11 will be described in more detail. As shown in FIG. 2, the seedling mounting table 11 is arranged at an upper portion of the elevating link mechanism 9 with its upper end inclined so as to approach the traveling vehicle body 1. In the seedling table 11 provided, a pair of left and right lower chain sprockets 11e, which are components of the rotary drive,
11e and the upper chain sprocket 11d, 11d are connected and fixed by a connecting pipe 11f, respectively, and each connecting pipe 11f is laterally fitted to the vertical feed shaft 112a and the support shaft 112b, and each connecting pipe 11f is screwed. It is fixed with combined bolts 11g. And a pair of left and right chain sprockets 1
The distance between 1d, 11d and 11e, 11e is at least the pot portions A1, A at the left and right ends of the seedling tray A.
It is set so that it is inside 1 and is located on the lower surface of the left and right connecting portions of the pot portion A1, and the transfer chains 11c and 11c are attached to the upper and lower chain sprockets 11d, 11d and 11e.
Wrap each.

The lateral rods 17 fixed across the pair of left and right transport chains 11c, 11c are arranged at the pitch L2.
And the length of the round rod-shaped horizontal rod 17 is shorter than the horizontal width dimension H1 of the seedling tray A. With this configuration, the kick claw 111 kicks and rotates the driven cam 113 at the terminal end where the sub-frame 101 is laterally moved by the lateral width dimension of the seedling tray A, and the lower chain sprockets 11e and 11e are intermittently moved through the vertical feed shaft 112a. Driven laterally, the pair of left and right transport chains 11c, 11c are mounted on the horizontal rods 17 to engage with the lower surface side of the continuous portion of the pot portions A1 arranged in the transport front-rear direction of the seedling tray A, so that the seedling tray A
Is reliably conveyed vertically in the direction of the lower chain sprocket 11e in FIGS. 2, 5 and 9.

By constructing the vertical feeding means of the seedling tray A as described above, the left and right end portions of each horizontal rod 17 are provided at the transport chain 1.
1c and the chain sprockets 11d and 11e are projected laterally, and the lateral rods 17 do not project from the left and right side ends of the seedling tray A. It can be fed vertically while being supported by the bottom surface.

When the seedling trays A are arranged side by side in parallel, the lateral rods 17, 17 adjacent to each other, the upper chain sprockets 11d, 11d, and the lower chain sprockets 11e, 11e do not interfere with each other. Even when the left and right arrangement intervals of the two seedling trays A are changed to reduce the row interval of the two-row planting, the side edges of the two seedling trays A can be brought close to each other. In this way, when changing the spacing between the planting strips, the bolt 11 with the connecting pipe 11f moved laterally with respect to the vertical feed shaft 112a and the support shaft 112b is used.
You can stop it.

Further, on this seedling placing table 11, a support guide rod 11a for supporting the lower surface side of each tray A so that the tray A slides downward, and the upper surface side of the tray A for the tray A downward. A pressing guide rod 11b is provided for guiding the slide-down. A guide member 16 for the tray A is arranged on the lower surface side of the seedling placing table 11 in an inclined shape, and a lower end portion 16a of the guide member 16 is attached to the lower chain sprocket 11e of the seedling placing table 11. While curving along the outer periphery of
An upper end portion 16b of the guide member 16 is configured to be inclined so as to approach the traveling vehicle body 1 (see FIG. 2).

The two pairs of seedling take-out mechanisms 1 described later
2, 12 and the seedling transplanting mechanism 13, 13 mount the seedling take-out mechanism 12 and the seedling transplanting mechanism 13 as a set on the unit frame 114, respectively.
4 is slidably attached to the output shaft 33 such as a spline shaft provided on the main frame 100 and the drive shaft 116, and is fitted so that it can be fixed with bolts or the like after the position adjustment, and from the power transmission case 102 to the chain sprocket 117a, 117
b and the chain 117c to transmit power to the transmission case 20, and the output shaft 33 and the drive shaft 116 are intermittently rotated at the same timing via an intermittent rotation cam mechanism (not shown) in the drive case 118. Drive it. A lateral arrangement interval of the two unit frames 114,
By adjusting the lateral arrangement interval of the two seedling platforms 11, 11 in a wide and narrow direction, the planting interval of two rows can be adjusted. Even in the case of adjusting the strip spacing in this way, the horizontal feed drive shaft 107 and the vertical feed drive shaft 110 are not attached to the subframe 1
Since it is associated with No. 01, there is an effect that an extremely simple operation of adjusting the left and right spacings of the two seedling placement tables 11 within the sub-frame 101 can be performed without adjusting the position of this part. .

Next, with reference to FIGS. 3 and 4, seedling transplantation having a swinging arm 31 that swings up and down, a transplanting cup 32 for holding seedlings to be transplanted, etc. at the tip of the swinging arm 31. The structure of the mechanism 13 will be described. That is, the rotation case 34 is attached to the output shaft 33 protruding to one side of the mission case 20.
The inner chain sprocket 35 is attached, and the chain 38 is wound around the chain sprocket 37 and the chain sprocket 35 fitted to the rotary shaft 36 on the free end side of the rotating case 34 to transmit power.

A rotary case 40 is rotatably fitted to one outer surface of the rotating case 34 on the free end side, and a sun gear 39 is fixedly provided concentrically with the rotary shaft 36. An intermediate gear 41 meshing with 39 and a planetary gear 42 meshing with it are rotatably supported in a rotary case 40. In addition, chain sprocket 3
A friction clutch 43 is provided between the rotary shaft 36 and the rotary shaft 7 to prevent the rotary shaft 36 from slipping when power is overloaded.

A support shaft 44 to which the planetary gear 42 is attached
The crank arm 45 is fixed to the crank arm 4 and
A tip shaft 46 of No. 5 is rotatably attached to a middle part of the swing arm 31. A guide roller 47 at the base end of the swing arm 31
Is vertically slidably fitted to a guide rail 48 which is erected at an appropriate place such as a frame so as to be substantially vertical to the ground. The transplantation cup 32 is a pair of cup bodies 32a, 32, which is a substantially conical shape that constricts downwards and is divided into front and rear halves.
The rotation supporting shafts 49a and 49b, which are composed of b and are fixed to the upper ends of the cup bodies 32a and 32b, are rotatably supported by the support plate 50 protruding from one side of the swing arm 31. , The two rotation support shafts 49a and 49b are configured to rotate in opposite directions to each other via a link mechanism 51 having an X-shape in a side view, which is formed by pivotally connecting two link pieces with a pin. In addition, the link mechanism 51 has a pair of cup bodies 32a, 3
The lower end of 2b is urged by a spring 52 in a direction in which it is always closed. In addition, the push rod 5 connected to the link mechanism 51.
The base end of 3 is supported so as to be movable back and forth with respect to the swing arm 31, and the base end of the push rod 53 is the crank arm 4 described above.
5 is provided so as to be in constant contact with the cam 54 that fits on the tip end shaft 46 of the No. 5 and rotates integrally.

With this configuration, when the rotary case 40 is rotated clockwise by the rotation of the output shaft 33 through the chain sprockets 35, 37 and the rotary shaft 36 in FIG.
By the meshing rotation of the sun gear 39, the intermediate gear 41, and the planetary gear 42, the crank arm 45 rotates counterclockwise in FIG. 4, and the swing arm 31 connected to the crank arm 45 is centered on the guide roller 47. Since it moves up and down along the guide rail 48 while swinging back and forth, the transplantation cup 32 moves up and down along the locus 55 (only a part of the upper side is shown) in FIG. To the field. Further, in the transplantation cup 32, the lower ends of the pair of cup bodies 32a and 32b are closed at the upper position,
Therefore, the posture can be maintained even if a seedling (not shown) to be transplanted is inserted from above. On the other hand, when the transplantation cup 32 descends and the lower ends of the cup bodies 32a and 32b pierce the soil surface of the field, the push rod 53 is pushed out by the cam 54, and the both rotation support shafts 49a, 49a via the link mechanism 51. Four
9b are rotated in the opposite directions to each other, and cup bodies 32a, 3
Since the lower end of 2b opens, the seedlings inside can be transplanted to the field.

Next, the construction of the seedling take-out mechanism 12 including the picking claw 60 and the like will be described with reference to FIGS. The bracket 67 fixed to the seedling transplanting device 8 so that the pair of left and right picking claws 60 in the seedling removing mechanism 12 are arranged above the transplanting cup 32 described above.
A support plate 68 is fixedly mounted on the input shaft 71 to which power is transmitted from the drive shaft 116 of the mission case 20 via the chain and the chain sprocket 63 to the inner periphery of the sun gear 70 fixed to the support plate 68. Is rotatably fitted, and the other end of the input shaft 71 is fixed to the rotary case 72 so as to rotate integrally.

Inside the rotary case 72, the sun gear 70
An intermediate gear 73 meshing with the crankshaft 74 and a planetary gear 75 fixed to the crankshaft 74 and meshing with the intermediate gear 73 are internally provided, and a crank arm 76 mounted on the crankshaft 74 is mounted.
A seedling taking-out arm 78 having a pair of left and right picking claws 60 at one end is rotatably fitted to the cam shaft 77 protruding from the tip of the. The guide shaft 79 protruding from the other end of the seedling picking arm 78 is slidably fitted into a substantially arcuate guide groove 81 of a guide plate 80 fixed in parallel with the support plate 68, and the input One rotation of the rotary case 72 around the shaft 71 causes the pair of pinching claws 60, 6 to rotate.
As shown in FIG. 5, 0 is configured to follow a trajectory 82 of returning to the original position after the picking claw pierces the pot portion A1 of the seedling tray A and holds the seedling.

Further, the base end mounting pieces 83, 83 of the pair of left and right picking claws 60, 60 are fixed to the L-shaped pivots 84, 84, and each of the pivots 84 is a spectacle-shaped mounting portion of the seedling picking arm 78. 78a is rotatably mounted, and the spring 85 connecting the left and right mounting pieces 83, 83 urges the tip ends of the pair of left and right gripping claws 60, 60 in a direction in which they are always closed.

A cam plate 86 is fixed to the cam shaft 77,
On the front and back surfaces of the wide width of the cam plate 86, arc-shaped end face cam portions 87, 87 are provided so as to project in a section of a rotation angle along the circumferential direction, and the base ends of the pair of left and right gripping claws 60, 60 are provided. When the abutting pieces 88, 88 of a spherical shape or the like protruding so as to face each other from the mounting pieces 83, 83 ride on and abut on the end surface cam portions 87, 87, the tips of both the picking claws 60, 60 are the springs 8.
It is configured to open against the force of 5.

Further, the pin 8 of the seedling picking arm 78
The base ends of a pair of rod-shaped push-out tools 91, 91 are rotatably mounted on a mounting plate 90 rotatable around nine positions, and the tip end annular portion 91a of each push-out tool 91 has the above-mentioned chopstick shape. Picking nail 6
The both end annular portions 91a are urged to move toward the tips of the picking claws 60, 60 by springs 93 which are slidably fitted to the 0 and 60 and mounted on the mounting plate 90 and the seedling picking arm 78. Has been done. Then, the rollers 92 attached to the mounting plate 90
Is constantly in contact with the peripheral surface (circumferential cam portion) of the cam plate 86, and a recess 86a in a predetermined rotation section of the cam plate 86 is formed.
When the roller 92 is located (when the pot seedling pierced and pinched by the picking claws 60, is located above the transplantation cup 32), the pot seedling is formed at the tip annular portions 91a of both the extruding tools 91. The pot seedlings are pushed out and pulled out from the picking claws 60, and the seedlings are discharged into the transplanting cup 32.

With the above structure, while the traveling machine body 1 is moved forward, power is transmitted to the PTO shaft to operate the seedling transplanting device 8, and the operation cycles of the left and right seedling take-out mechanisms 12 and the transplanting mechanism 13 are made to coincide with each other. In the lateral movement stop section of the platform 11, the seedlings are taken out from the pot portions A1 of the left and right seedling trays A1 by the respective picking claws 60, and the seedlings are transferred to the left and right transplanting cups 32, 32 to be transplanted to the field. The parallel two-row planting work is executed.

Although the above-mentioned embodiment has been described with respect to the riding type seedling transplanting machine, it is needless to say that it can be applied to a walking type seedling transplanting machine, and can also be applied to the case where three or more rows are planted.

[0026]

As described in detail above, the first aspect of the present invention is as follows.
The seedling transplanting machine according to the invention is a seedling placing table for placing and transporting a plurality of seedling trays in which the seedling pot portions are arranged in a matrix in a plan view, and the pot portion of each seedling tray. A plurality of seedling transplanting mechanisms including a seedling removing mechanism for picking up seedlings with a pair of picking claws from the seedling, and an opening / closing transplanting cup for receiving seedlings from the seedling removing mechanism and transplanting them to the field. A seedling transplanting machine for row planting, wherein a power transmission case and a transverse feed drive shaft and a longitudinal feed drive shaft which receive power from the power transmission case are provided in a main frame, and a subframe is provided in the main frame. And a plurality of unit frames on which the set of the seedling take-out mechanism and the seedling transplanting mechanism is mounted so that the left and right spaces thereof are adjustable, and the sub-frame is mounted. Seedling tray in the frame It is provided with a longitudinal feed transmission case for receiving a power transmission from the longitudinal feeding drive shaft transverse feed end position of the sub-frame with a seedling mounting table for each mounted adjustably lateral spacing.

Therefore, the two unit frames mounted with the seedling take-out mechanism and the seedling transplantation mechanism as a set can adjust the left and right positions with respect to the main frame and can reciprocate left and right with respect to the main frame. To 2
Since the two seedling mounts are mounted so that the horizontal spacing between them can be adjusted, the horizontal spacing between the two unit frames and the horizontal spacing between the two seedlings are adjusted in the wide and narrow directions. By doing so, it is possible to adjust the planting interval of two rows. Even when adjusting the line spacing in this way, since the horizontal feed drive shaft and the vertical feed drive shaft are provided in the main frame in association with the sub-frame, the position of this portion can be adjusted without adjustment. One seedling stand has the effect of being extremely easy to operate by just adjusting the left-right spacing within the subframe.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a riding type seedling transplanting machine.

FIG. 2 is a side view of a main part of a seedling table.

FIG. 3 is a side view of a main part of a seedling transplantation mechanism.

FIG. 4 is a sectional view of a main part of a seedling transplantation mechanism.

FIG. 5 is a side view of a main part of a seedling take-out mechanism.

FIG. 6 is a perspective view of a main part of a seedling take-out mechanism.

FIG. 7 is a sectional view of an essential part of a seedling take-out mechanism.

FIG. 8 is a skeleton diagram of a main frame and a sub frame of the seedling transplanting device and a power transmission mechanism.

FIG. 9 is a perspective view showing a vertical feeding unit.

FIG. 10 is a cross-sectional view of a main part of a vertical feeding unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling machine 8 Seedling transplantation device 9 Elevating link mechanism 11 Seedling mounting table 11c Conveying chains 11d, 11e Chain sprockets 11f, 122 Connecting pipe 12 Seedling extraction mechanism 13 Seedling transplantation mechanism 17 Side rod 100 Mainframe 101 Subframe 102 Power transmission case 105 Vertical feed transmission case 107 Horizontal feed drive shaft 110 Vertical feed drive shaft 112a Vertical feed shaft 114 Unit frame A tray A1 Tray pot part

Claims (1)

[Claims] 1. A seedling mounting table for mounting and transporting a plurality of seedling trays in which pot portions of seedlings are arranged in a matrix in a plan view, and a pair of picking claws from the pot portion of each seedling tray. Seedlings for multiple-row planting, which are composed of a seedling removing mechanism for picking up seedlings at and a seedling transplanting mechanism having an openable / closable transplanting cup for receiving seedlings from the seedling removing mechanism and transplanting them to the field In the transplanter, a power transmission case and a horizontal feed drive shaft and a vertical feed drive shaft that receive power from the power transmission case are provided in a main frame, and a subframe is engaged with the horizontal feed drive shaft in the horizontal direction. And a plurality of unit frames on which the set of the seedling take-out mechanism and the seedling transplanting mechanism is mounted so that the left and right spaces thereof can be adjusted, and the subframe is provided with each seedling tray. Seedling mount A seedling transplanter equipped with a vertical feed transmission case that is mounted so that the left-right spacing can be adjusted and that receives power from the vertical feed drive shaft at the horizontal feed end position of the subframe.