JPH07194220A - Planter for rice transplanter - Google Patents

Abstract

PURPOSE:To safely stop planting pawls attached to a rotary case and prevent a seedling from falling off the front planting pawls. CONSTITUTION:This planter is constituted by extending seedling takeout guides (56) forming nearly the same curves as those of loci of the tips of planting pawls (17) downward from both sides of a seedling takeout port (37) of a seedling-carrying platform (16) so as to further nip a seedling holding part of the planting pawls (17) in the front stopped during a period from cutting out the seedling of the seedling-carrying platform (16) to the paddy field surface with the seedling takeout guides (56) in a planter comprising the planting pawls (17) attached through a pawl case (22) to a rotary case (21) uniformly rotated in one direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a seedling placing table that reciprocates left and right, and a planting claw for picking up and planting a single seedling of the seedling from the seedling placing table and continuously performing rice planting work. The planting device of the machine.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Patent Application Laid-Open No. 60-199309, there is provided a rotary case that rotates at a constant speed in one direction, and planting claws are arranged symmetrically around a rotary shaft center of the rotary case. Technology was developed.

[0003]

In the above-mentioned prior art, by stopping the front planting claw between the seedling cutting and the rice field, the interference between the planting claw and the rice field can be prevented. The seedlings cut off by the planting claws were likely to fall off, and there was a problem that the plant stalls occurred when planting was restarted.

[0004]

SUMMARY OF THE INVENTION However, according to the present invention, in a device in which a planting claw is attached to a rotary case that rotates in one direction at a constant speed through a claw case, the locus of the tip of the planting claw is substantially the same curve. The seedling take-out guides that form the seedlings are extended downward from both sides of the seedling take-out port of the seedling placing table, and the seedling holding part of the front planting claw that is stopped between the cutting of the seedling placing table and the paddy field is It is configured so that it can be sandwiched by the seedling pick-up guides from both sides, and at the end of the planting process, the front planting claws can be prevented from plunging into the soil and disturbing the rice field, and the seedlings of the front planting claws when stopped can be prevented. The dropout can be prevented by the seedling pick-up guide, and the occurrence of stockouts at the time of restarting planting can be eliminated.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of the planting section, FIG. 2 is a side view of the riding rice transplanter, and FIG. 3 is a plan view thereof. In the figure, (1) is a traveling vehicle on which an operator mounts an engine (2). Attach the rear end of the body frame (3) to be mounted to the mission case (4),
The front wheels (6) for traveling paddy fields are supported on both front sides of the mission case (4) through front axle cases (5), and the transmission cases (7), which are axle cases, are supported on both rear sides of the mission case (4). ) Are continuously provided, and the rear wheel (8) for traveling the paddy field is supported at the rear end of the transmission case (7). Then, a spare seedling mount (10) is attached to the outside of both sides of the hood (9) that covers the engine (2), and the transmission case (7) and the like are covered by a vehicle body cover (12) that forms a step (11), A driver's seat (13) is attached to the upper part of the vehicle body cover (12), and a steering handle (14) is provided in front of the driver's seat (13) at the rear of the hood (9).

Further, (15) in the figure is a planting part having a seedling table (16) for multi-row planting and a plurality of planting claws (17) ... The seedling stand (16) is supported on the planting case (20) via the guide rail (18) and the guide rail (19) so as to be slidable right and left, and at a constant speed in one direction as shown in FIG. The rotary case (21) to be rotated is disposed in the planting case (20) at symmetrical positions with respect to the axis of the rotary shaft, and the claw cases (22) and (22) are arranged in the claw case (22). ) Is installed. A support frame (24) is provided on the front side of the planting case (20) via a center pin (23), and a three-point link mechanism (27) including a top link (25) and a lower link (26) is provided. An elevating cylinder (28) for connecting a support frame (24) to the rear side of the traveling vehicle (1) and elevating the planting part (15) through the link mechanism (27).
The front and rear wheels (6) and (8) are driven to move and move at a substantially constant speed, and at the same time, slide back and forth from side to side (1).
Take out one seedling from 6) with a planting claw (17),
It is constructed so that rice planting work is performed continuously.

Further, reference numeral (29) in the drawing denotes a traveling speed change lever,
(30) is a planting lift lever, (31) is a planting sensitivity adjustment lever, (32) is a traveling clutch pedal, (33) (3
3) is a left and right brake pedal, (34) ... is a float for leveling the field, and supports the float (34) ... under the planting case (20) via a planting depth adjustment link (35) and the like. is doing.

Further, as shown in FIG. 5, the rotary case (21) is inserted through the nail cases (22) (22) to the seedling take-out port (37) of the seedling take-out plate (36) provided at the lower end of the seedling placing table (16). ), Two planting claws (17) (17) are alternately moved, and two planting claws (17) (17) plant two seedlings with one rotation of the rotary case (21). It is configured to be attached.

Next, as shown in FIGS. 6 and 7, a planting pawl drive shaft (38) is rotatably supported at the rear end of the planting case (20), and a rotary case is provided at both ends of the drive shaft (38). (21) (21) is fixed symmetrically, and a sprocket (40) for suspending the planted pawl drive chain (39) is idled around the drive shaft (38), and an upper stop cam is an upper stop mechanism. Unit clutch (4) with (41)
The sprocket (40) through the drive shaft (3
8) linked with the eccentric pin (45) of the clutch shaft (44) by rotating the clutch lever (43).
Engages with the trough of the cam (41), and the rotation of the cam (41) separates the clutch pawl on the side of the cam (41) from the clutch pawl of the sprocket (40) to disconnect the unit clutch (42). The rotary case (2
1) A half rotation of the cam (41) allows the unit clutch (42) to be disengaged, and two troughs of the cam (41) with which the eccentric pin (45) engages are provided at 180-degree intervals. It is configured to form two stop positions during one rotation of 21).

A sun gear (46) is loosely fitted to the planting pawl drive shaft (38), and the sun gear (46) is fixed to the planting case (20) by a phase adjusting lever (47) so that the phase can be adjusted. And the idle gear (48) and planetary gear (4) having the same number of teeth as the sun gear (46).
9) is provided. The idle gear (48) is supported by the intermediate shaft (50) and the planetary gear (49) is supported by the claw case shaft (51) fixed to the claw case (22) inside the rotary case (21). The gears (46) (48) (49) are connected to the shafts (38).
(50) (51) is eccentrically supported, and the sun gear (46) is constantly meshed with planetary gears (49) and (49) via idle gears (48) and (48). A sun gear (46) is fixedly supported on (20), and a rotary case (2) is attached via a planting pawl drive shaft (38).
1) Rotate 1) at a constant speed to alternately move the planting claws (17) (17) at both ends of the rotary case (21) to the seedling take-out port (37) at the lower end of the tilt of the seedling mounting table (16), and at the same time, the rotary case Each gear (46) is interlocked with the rotation of (21).
(48) The nail case shaft (51) is rotated at a non-constant speed via (49), and the nail case shaft is rotated rather than the rotation of the rotary case (21) after the seedling cutting of the seedling placing table (16) to the rice field. The rotation of (51) is made faster, and the rotation of the nail case shaft (51) is made slower than the rotation of the rotary case (21) after the seedling is planted on the rice field until reaching the seedling take-out port (37). Three
7) The rotation of the rotary case (21) and the rotation of the claw case shaft (51) are made to be substantially equal in the vicinity of the planting area and in the vicinity of the paddy planting portion, and the planting claw (17) has a planting locus that is vertically long in front of the rotary case (21). It is configured to be formed into an oval shape.

Further, one end of the cam shaft (53) is rotatably fixed to the rotary case (21) through a position adjusting lever (52), and the cam shaft (53) is loosely fitted to the pawl case shaft (51). Push through the middle and push out the nail (17
The cam shaft (53) is connected to the push rod (54) connected to a) via the push arm (55), and when the planting claw (17) plunges into the rice field, the cam shaft (53) and the push arm. Push rod (5) through (55)
4) advance and push out the nail (1a) with the pushing nail (17a).
The seedlings sandwiched in 7) are extruded into the soil.

Further, as shown in FIG. 1, the seedling take-out port (3
7) Providing a flexible and elastic seedling take-out guide (56) having an upper end fixed to both sides and a lower end extending downward, and forming a substantially same curve as the locus of the tip of the planting claw (17). The guide (56) is extended downward from both sides of the seedling take-out port (37) of the seedling placing table (16), and one of the planting claws (17) provided at both ends of the rotary case (21) is provided in the seedling taking-out guide (56). And the other planting claw (17) to the float (34)
The position of the mounting angle of the rotary case (21) with respect to the planting pawl drive shaft (38) and the disengagement timing of the unit clutch (42) of the upper stop cam (41) are adjusted and set so as to stop them respectively above. , The seedling holding part of the front planting claw (17) that stops between cutting the seedling and the rice field is sandwiched from both sides by the seedling pick-up guides (56),
While holding the seedlings of the planting claws (17), the planting claws (17) and the lower side of the nail case (22) and the lower side of the rotary case (21) on the way from the paddy field to the seedling take-out port (37) are already kept. A rotary case that is located above the upper end of the planting seedling (57) and prevents the planting claw (17) or the claw case (22) on the rear side of the machine body from pushing down the final planted seedling. 21) in which the planting claws are attached to the claw case (22) via the claw case (22), the front planting claws (1) symmetrically arranged on the rotary case (21) about the axis of rotation.
A planting case (20) in which 7) is configured to be stopped at least above the paddy field, and the rear planting claw (17) can be stopped at a position higher than the planted seedling height, and a rotary case (21) is installed. The planting claw (17) is stopped so that the tip of the planting claw (17) is above the bottom surface of the plant.

The present embodiment is constructed as described above, and the rotary case (21) is continuously rotated at a constant speed in one direction in the longitudinal direction of the machine body by the planting claw drive shaft (38). , The claw case shaft (51) rotates at a non-constant speed via the gears (46) (48) (49), and the seedling take-out port (3)
Move the planting claws (17) to the seedling cutting posture before 7) and the planting claws (17) to the planting posture in the state of plunging into the paddy field, and rotate the rotary case (21) half a turn to produce one seedling. When the planting stop operation is performed via the clutch lever (43), the eccentric pin (45) comes into contact with the upper stop cam (41) to disconnect the unit clutch (42). The planting claw (17) on the front side is stopped in the seedling removing guide (56) above the float (34) as shown in FIG. (56) to prevent stump occurrence when re-planting is resumed, and the rear side planting claw (17) is floated (3).
4) Stop at a position higher than the upper end of the last planted seedling (57) above to prevent the planting claw (17) from plunging into the rice field and disturbing the rice field. ), And prevents the planting claw (17) or the claw case (22) from contacting an already planted seedling and causing it to fall.

[0014]

As is apparent from the above embodiments, the present invention provides a rotary case (21) which is rotated at a constant speed in one direction, in which a planting pawl (17) is attached via a pawl case (22). A seedling take-out guide (56) forming a substantially same curve as the locus of the tip of the planting claw (17) is extended downward from both sides of the seedling take-out port (37) of the seedling stand (16), and further, the seedling stand ( 16) The seedling holding part of the front planting claws (17) stopped after cutting the seedlings and reaching the paddy field is configured to be sandwiched by the seedling removal guides (56) from both sides at the end of the planting process. The front planting claw (17) can be prevented from plunging into the soil and disturbing the rice field, and the front planting claw (1) at the time of stop can be prevented.
Seedling removal guide (56) can prevent seedling drop-off in 7) and eliminate the occurrence of shortages when planting is restarted.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a planting part.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the planting part.

FIG. 5 is a plan view of the same.

FIG. 6 is a sectional side view.

FIG. 7 is a sectional plan view.

FIG. 8 is a front view of a main part.

[Explanation of symbols]

 (16) Seedling table (17) Planted nails (20) Planted case (21) Rotary case (22) Claw case (37) Seedling outlet (56) Seedling removal guide

Claims (1)

[Claims] 1. In a device in which a planting claw is attached to a rotary case that rotates in one direction at a constant speed via a claw case, a seedling pick-up table that forms a substantially same curve as the locus of the tip of the planting claw is provided. The seedling holding part of the front planting nail, which was extended downward from both sides of the seedling take-out port and stopped between the cutting of the seedling mount and the paddy field, was configured to be sandwiched by the seedling take-out guides from both sides. A planting device for rice transplanters.