JP2537437Y2 - Transplanter seedling removal device - Google Patents

Description

[Detailed description of the invention]

[0001]

In the present invention, a seedling is taken out from a seedling tray of a seedling table which is reciprocated right and left by a reciprocating and swinging movement, and is supplied to a planting claw. The present invention relates to a seedling removal device for a transplanter that performs sequential transplantation.

[0002]

2. Description of the Related Art In the specification of Japanese Utility Model Application No. 2-93377, a seedling removal claw is reciprocated and oscillatingly moved to take out a seedling at a seedling removal position and supply a seedling with a planting nail. The movement along the seedling removal locus until the seedling is released at the position is performed on the seedling removal nail.

[0003]

[Problem to be solved by the invention] However, in this case,
In the last step of the seedling removal trajectory where seedlings are supplied to the planting nails, the seedling supply posture is disturbed by the inertia of the movement, or the seedlings do not enter the planting nails and spill outside. There was a problem that the supply of seedlings from the seedling removal nails to the planting nails was not performed accurately.

[0004]

Therefore, according to the present invention, a seedling is taken out from a seedling tray of a seedling table which is reciprocated right and left by a reciprocating and swinging movement, and is supplied to a planting claw to transplant the seedling. In the structure provided with the seedling removal driving mechanism, the movement inertia force of the seedling removal nail is located at the trailing end position of the seedling removal trajectory from the seedling removal position of the seedling removal nail to the seedling supply position to the planting nail. By providing a movement buffer for reducing the number of seedlings, the delivery and supply of seedlings from the seedling removal nails to the planting nails is stabilized, and the planting accuracy is improved.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view of a seedling removing claw portion, and FIG. 2 is an overall side view of the transplanter. In the figure, (1) is a front frame on which an engine (2) is mounted, and (3) is a front frame (1) rear end. And (4) left and right running wheels which are supported on the transmission case (3) via a transmission case (5) so as to be vertically swingable, and (6) is the transmission case (3).
A seedling supply device installed behind the chassis through a chassis frame (7), (8) is installed between the left and right running wheels (4) in the transmission case (3) via a planting transmission case (9). A seedling planting device, (10) is a crushing roller for crushing the upper surface of the ridge,
(11) is a ridge guide roller disposed on both the left and right sides of the pressure reduction roller (10), (12) is a stock detection roller for adjusting the planting interval, (13) is a cultivation roller, and (14) is a gauge roller. A pot seedling of one strain is taken out from a seedling tray (16) on a seedling table (15) reciprocating right and left in the seedling supply device (6) with a seedling picking nail (17),
The removed pot seedlings are released and supplied to a hopper type planting claw (19) that moves up and down in conjunction with the multi-cutter (18) of the planting device (8), and is operated by a steering handle (20) operation. The plant is configured to plant, ie, transplant, pot seedlings at regular intervals on the ridge surface while the body is running.

As shown in FIGS. 3 to 5, the seedling supply device (6) is a lateral feed for inputting a driving force from a transmission case (3) to a seedling extracting drive shaft (22) via a transmission chain (21). A drive case (23) and a seedling extraction arm (22) that connects and supports a pair of left and right seedling extraction claws (17) to the drive shaft (22) via a rotary case (24), a crank arm (25), and a cam shaft (26). 27) an arm guide plate (28) for guiding the seedling take-out arm (27) during rotation of the crank arm (25) to a seedling take-out position and a seedling discharge position along a guide groove (28a) in a linear and swinging operation. A sprocket (29) (30) is attached to the seedling removal drive shaft (22).
And a vertical feed drive shaft (32) interlockingly connected via a chain (31), and a rotor (34) and first and second swing arms (33) on a fixed pushing cam (33) of the vertical feed drive shaft (32). 35) (36)-Seedling pushing pin (39) for connecting the pin support (38) via the engaging shaft (37), and the left and right chassis frames (7) parallel to the drive shaft (32).
The support (38) is supported by two guide shafts (32) and (40) of an upper guide shaft (40) and the drive shaft (32) for integrally connecting (7), and the support (38) is moved up and down by guide pins (41) and (4).
2) and a mounting plate (44) for a seedling pushing pin that guides the movement via a return spring (43), and the seedling extraction claw (17) is moved upward by the rotation of the drive shaft (22) to the seedling tray (16). Immediately before the entry, the seedling pushing pin (39) is inserted into the seedling tray (1).
6) The seedling is pushed out from the bottom side to perform the pushing operation. The mounting plate (44) is fixedly mounted on the guide shaft (40) at substantially the center in the left and right direction of the body.

[0007] The seedling supply device (6) includes a seedling mounting table (15).
Left side plate (4) of left and right side plates (45a) (45b) on both lower sides
5b) A seedling vertical feed drive mechanism (46) is provided on the outside, and the left and right side plates (45a) (45) are mounted on a lower guide shaft (48) that extends between fixed brackets (47) of the left and right chassis frames (7).
b), the left and right side plates (45a) and (45b) are moved by the guide between the upper guide shaft (40) and the lower guide shaft (48). Stand (1
5) reciprocating left and right, and the left and right side plates (45a)
(45b) Between a drive sprocket (51) supported via a transport shaft (50) between the idler wheel (53) and a free wheel (53) supported by an elastic pressure via a holder pivot plate (52) at the upper end of the seedling mounting table (15). The vertical feed pin (55) of the vertical feed chain (54) stretches over the depression (16b) between the bottoms of the cells (16a) of the seedling tray (16), and the right and left of the seedling mounting table (15) At the end of movement, when the seedling vertical feed drive mechanism (46) is operated by the left and right vertical feed cam members (56a) (56b) fixed to the vertical feed drive shaft (32), the drive sprocket (51) is moved. It is configured such that the seedling tray (16) for one pitch is fed vertically by rotating it at a fixed angle.

[0008] Further, the seedling table (15) having the lower end fixed to the left and right side plates (45a) and (45b) is connected between the front portions of the left and right vertical frames (57) via a rod seat (58). A sliding body (61) integrally connected by a connecting rod (59) and connected to a traverse groove (60a) of a traverse drive shaft (60) output from the traverse drive case (23) is connected to the connecting rod (59). ) Via a bolt (62), and a smooth lateral feed of the seedling table (15) is performed by a connecting rod (59) in front of the upper and lower guide shafts (40) and (48). A seedling take-out claw (17) and a seedling pushing pin (39) are provided in a space (63) formed between the shafts (40) and (48) and the traverse drive shaft (60), and the lower guide shaft (48) is connected. By providing the seedling removal claw (17) below the entry locus, To accurately and reliable and safe protection operation of Luo seedlings extraction claw (17) and seedlings extrusion pins (39) are configured to be assumed was soo.

As shown in FIGS. 6 to 9, the lateral feed drive shaft (60) is interlocked with the seedling take-out drive shaft (22) via an intermittent gear transmission mechanism (64), and the seedling take-out claw (17) is provided. Is provided so as to stop the lateral feeding only in the section where the rush enters the seedling tray (16). The rotary case (2)
The planetary gear (66) attached to the crank arm shaft (65) of 4) is attached to the attachment plate (67) of the rotary case (24).
Intermediate gear (69) with stationary sun gear (68) fixed to the side
When the rotary case (24) is rotated via the drive shaft (22), the crank arm shaft (65) is rotated clockwise about the drive shaft (22) as shown in FIG. And the arm shaft (6
5) is configured to rotate in the counterclockwise direction. In this case, the sun gear (68) and the planetary gear (66)
Has a gear ratio of 2: 1, and the arm shaft (65) rotates once during one revolution of the crank arm shaft (65).

Further, a nail opening / closing cam (70) for opening and closing the tips of a pair of right and left seedling extraction claws (17) is integrally attached to the cam shaft (26) at the tip of the crank arm (25). The intermediate portion of the seedling take-out arm (27) is swingably attached to the cam shaft (26), and the opening / closing cam (70) has a flat closing cam surface (70) for opening and closing the claw on both sides.
a) and a depressed open cam surface (70 b), and a tip ring-shaped portion (71) on the tip side outer side of the seedling removal claw (17).
The outer peripheral surface of the cam (70) has a circumferential cam surface (70c) for slidingly moving the linear seedling pushing member (71) into which the a) is loosely fitted.

The seedling take-out arm (27) integrally supports the seedling take-out claw (17) at one end thereof via a left-right swinging fulcrum shaft (72) and a swing plate (73) so that the mounting length can be freely adjusted. Then, the guide body (74) on the rear end side is engaged with the guide groove (28a) of the arm guide plate (28) which is fixed to the mounting plate (67) via the bolt (75a) and the collar (75b). As shown in FIG. 1, when the crank arm shaft (65) revolves around the drive shaft (22), the cam shaft (26) is moved along a linear trajectory (A) around the drive shaft (22). Then, the guide body (74) is inserted into the guide groove (28a).
When moving the reciprocating groove (a) substantially parallel to the trail (A) on the rear end side, the seedling removal claw (17) is moved substantially parallel to the reciprocating groove (a), and is moved relative to the seedling tray (16). The seedling removal claw (17) performs a linear reciprocating operation for pushing the tip of the seedling removal or retreating, and moves the rocking groove (b) having a forward ascending slope in the middle of the guide groove (28a). ) A reciprocating rocking operation is performed in which the tip is rocked between a seedling extracting position above the seedling tray (16) and a seedling releasing position above the planting claws (19), and furthermore, a reciprocating groove (a) on the front end side of the guide groove (28a). ), When moving the buffer groove (c), which is substantially parallel to the above, and swinging the seedling removal claw (17) downward from the seedling removal position to the seedling release position, the swinging is stopped at the swing end position. Stop and perform a slight linear forward movement to remove the seedling claw (17). It is configured to offset the movement inertial force generated at the time of descent swing.

Further, a nail opening / closing plate (76) is fixed to the left and right rocking plates (73) to which a pair of right and left seedling removing claws (17) are attached, and is connected to the plate (76) so that the protruding length can be adjusted. Opening / closing cam surfaces (70a) on both sides of the cam (70) by the spring force of a tension spring (78) that extends between the inner ends of the claw opening / closing screw body (77) to be stretched between the left and right rocking plates (73). (70
b), the left and right rocking plate (73) is rocked about the fulcrum shaft (72) to bring the screw body (77) into sliding contact with the open cam surface (70b). The configuration is such that the distal end side of (76) is opened to release the seedlings held between the claws (76).

On the other hand, a seedling pushing operation plate (8) is connected to the guide (74) side of the seedling take-out arm (27) via a pivot (79).
0), the operation plate (80) has a rotor (81) attached to the tip side of the seedling pushing member (71), and a rotator (81) for sliding contact with the circumferential cam surface (70c) at an intermediate portion. When the seedling removal claw (17) is attached and the seedling is released when the seedling is removed, the rotor (81) is placed on the circumferential cam surface (70c).
And the annular portion (71a) of the seedling pushing member (71) is pushed down to the tip of the nail (17) to release the seedling.

By the way, the mounting plate (67) is provided with bolts (82a) and collars (82) on the transverse drive case (23).
As shown in FIG. 7, a bolt hole of a mounting plate (67) for mounting the bolt (82a) is formed in an elongated hole (83) centered on the drive shaft (22), as shown in FIG. By adjusting the mounting position of the mounting plate (67), the movement locus of the seedling removal claw (17) is changed, and the entry position of the claw (17) with respect to the seedling mounting table (15) can be adjusted. It is configured to stabilize the seedling collecting performance. The arm guide plate (28) is provided between a rotary case (24) which is a driving side of the seedling take-out arm (27), and the mounting plate (67) includes a bolt (75a) and a collar (75b). It is configured such that it is integrally connected via a link and interlocks with the position adjustment of the mounting plate (47).

The present embodiment is constructed as described above, and the left and right spacing of the right and left seedling removal claws (17) is adjusted by the screw body (7).
With the adjustment of 7), the position where the seedling removal claw (17) enters the seedling mounting table (15) is adjusted by adjusting the mounting position of the mounting plate (67) by the long hole (83) of the bolt (82a). It can be easily adjusted to stabilize the seedling collecting performance and improve the reliability of planting.

Further, during the feeding of the seedlings from the seedling tray (16) by the seedling removal nails (17) and supplying the seedlings to the planting nails (19), the seedlings are released from the seedling removal position. The seedling removal claw (17) is not immediately released immediately after the seedling removal claw (17) swings down to the position, but linearly moves along the buffer groove (c) of the guide groove (28) once. Is slightly released, the kinetic inertia generated when the seedling removal claw (17) descends from the seedling removal position to the seedling release position is moved along the buffer groove (c). Can be effectively attenuated and planted nails (19)
It is possible to reliably supply the seedlings from the seedling removal nails (17) in a good posture and improve the planting accuracy.

[0017]

[Effects of the Invention] As is apparent from the above embodiments, the present invention is directed to a seedling tray (1) of a seedling table (15) that is reciprocated right and left.
6) In the structure provided with a seedling extraction drive mechanism for extracting a seedling with the seedling extraction nail (17) to be reciprocated and oscillating and supplying the seedling to the planting nail (19) to transplant the seedling. A movement buffer unit (10) for reducing the kinetic inertia of the seedling removal claw (17) at the trailing end position of the seedling removal trajectory from the seedling removal position of the removal nail (17) to the seedling supply position to the planting nail (19). c) is provided, so that the kinetic inertia force generated during lowering the seedling extraction nail (17) from the seedling extraction position to the seedling supply position is reduced, and the seedling extraction nail (17) is planted from the seedling extraction nail (17). 1
A remarkable effect is achieved such that the posture to 9) is good and the seedling can be reliably supplied, and the planting accuracy can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a seedling removal claw portion.

FIG. 2 is an overall side view of the transplanter.

FIG. 3 is an explanatory side view of a seedling supply device.

FIG. 4 is an explanatory plan view of a seedling supply device.

FIG. 5 is an explanatory side view of a seedling pushing pin portion.

FIG. 6 is an explanatory plan view of a seedling removal claw driving unit.

FIG. 7 is an explanatory partial side view of a seedling removal nail driving unit.

FIG. 8 is a partial side view illustrating a seedling removal claw portion.

FIG. 9 is an explanatory partial plan view of a seedling removal claw portion.

[Explanation of symbols]

 (15) Seedling platform (16) Seedling tray (17) Seedling removal claw (19) Planting claw (c) Buffer

Claims (1)

(57) [Scope of request for utility model registration] The present invention relates to a seedling removal drive mechanism which takes out seedlings from a seedling tray of a seedling table which is reciprocated left and right and reciprocates and swings, supplies the seedlings to a planting nail, and transplants the seedlings. In the structure provided, a movement buffering portion is provided at a trailing end position of a seedling removal trajectory from a seedling removal position of the seedling removal nail to a seedling supply position to a planting nail, in order to reduce a kinetic inertia force of the seedling removal nail. A seedling removal device for a transplanter, comprising: