JP2556828B2 - Rice transplanter planting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a seedling placing table which can be reciprocated right and left, and a planting claw for picking up and planting a single seedling from the seedling placing table. 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 planting claw between the bottom surface of the float and before cutting off the seedlings, interference between the planting claw and the rice field can be prevented. When the planting claw is stopped, the other planting claw stops between the seedling cutting and the paddy field, so the cut off seedlings easily drop from the planting claw, causing a stock loss immediately after the start of planting. There was a problem such as doing.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a device in which a planting claw is attached to a rotary case which is rotated at a constant speed in one direction through a claw case, the rotary case is centered around this rotary shaft core. One pair of symmetrically arranged planting claws can be stopped in the seedling take-out guide and the other planting claw can be stopped above the float, and a pair of the seedlings provided on both sides of the seedling take-out port of the seedling stand The interval of the extraction guides is formed so that the tip side is continuously smaller than the base end side, and the pair of the seedlings extraction guide tips are configured to sandwich the seedlings of the planting nail at the stop position from the left and right. Even if the planting claws are stopped between the cutting of seedlings and the paddy field, the retained seedlings can be held securely to prevent stunting immediately after restarting planting. It is possible to safely change direction at repeated ridges, Along with being able to perform rice planting work efficiently with almost no need for supplementary planting of missing plants at the time, by supplementing the decrease in seedling holding force on the tip side of the seedling extraction guide by reducing the interval, the seedling extraction guide It is possible to easily obtain a structure that keeps the seedling holding force between the base end and the tip almost uniform, and it is possible to easily prevent the seedling from deforming and falling off by holding the seedling picking guide tip end side where mechanical vibration is hard to be transmitted. .

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below 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). The rear end of the body frame (3) to be mounted is connected to a mission case (4), and front wheels (6) for traveling paddy fields are supported on both sides of the front part of the mission case (4) through front axle cases (5). Together with the transmission case (7), which is an axle case, on both sides of the rear part of the mission case (4).
And the rear wheels (8) for traveling paddy fields are 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 drawing is a planting part having a seedling placing table (16) for multi-row planting and a plurality of planting claws (17) ... The seedling stand (16) is supported by the planting case (20) via the guide rail (18) and the guide rail (19) so as to be slidable left and right, and as shown in FIG. The rotary case (21) to be rotated is arranged in the planted case (20), and the rotary case (21) is provided with the claw cases (22) and (22) symmetrically with respect to the center of the rotation axis. Attach the planting claw (17) to the claw case (22). Further, a support frame (24) is provided on the front side of the planting case (20) via a center pin (23), and the top link (2
5) and a support frame (2) on the rear side of the traveling vehicle (1) through a three-point link mechanism (27) including a lower link (26).
4) is provided, and an elevating cylinder (28) for elevating the planting part (15) via the link mechanism (27) is provided,
The front and rear wheels (6) and (8) are driven to move at a substantially constant speed, and at the same time, the seedlings for one plant are taken out by the planting claws (17) from the seedling mounting table (16) that slides back and forth to the left and right, 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. are 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) Rotary case (2
The rotation of 1) and the rotation of the claw case shaft (51) are made approximately equal,
The planting claw (17) is configured so that the planting locus is formed in a vertically elongated oval shape in front of the rotary case (21).

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) A flexible and resilient seedling removal guide (56) having an upper end fixed on both sides and a lower end extending downward is provided, and one of the planting claws (17) provided on both ends of the rotary case (21) is connected to the seedling. In the removal guide (56), the other planting claw (1
7) to stop each above the float (34),
Rotary case (21) for planting claw drive shaft (38)
The position of the mounting angle and the unit clutch (42) disengagement timing of the upper stop cam (41) are set and adjusted respectively. From both sides of the planting claw (17) that stops from the seedling cutting to the paddy field. While sandwiching the seedling pick-up guide (56) to hold the seedlings of the planting claw (17), the planting claw (17) and claw case (22) lower side on the way from the paddy field to the seedling take-out port (37) Also, the lower side of the rotary case (21) is positioned above the upper end of the planted seedlings (57) to prevent the planting claws (17) or the claw case (22) on the rear side of the machine from pushing down the final planted seedlings. are doing.

As is apparent from the above, in the device in which the planting pawl (17) is attached to the rotary case (21) which is rotated in one direction at a constant speed through the pawl case (22), the rotary case (21) is attached to the rotary case (21). One of the planting claws (17) symmetrically arranged around this rotation axis is used as a seedling take-out guide (56).
Into the other, place the other planting claw (17) in the float (3
4) As shown in FIG. 8, it is configured such that it can be stopped above each other, and as shown in FIG. 8, the interval between the pair of the seedling pick-up guides (56) (56) provided on both sides of the seedling pick-up port (37) of the seedling mounting table (16) is based It is formed so that the tip side is smaller than the end side continuously, and the pair of the seedling take-out guides (56) (56) tip portions hold the seedlings of the planting claws (17) at the stop position from the left and right sides. Even if the planting claws (17) are stopped between the cutting of the seedlings and the rice field, it is possible to prevent the stump immediately after the re-starting of the planting by the reliable holding of the cut seedlings, and to use the seedling taking-out guide (56). ), By compensating for the decrease in seedling holding force on the tip side by reducing the interval, a structure can be easily obtained in which the seedling holding force between the base end and the tip of the seedling extraction guide (56) is kept substantially uniform. are doing.

This 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 about the drive shaft (38) with the planting pawl. , 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 claw (17) to the seedling cutting posture before 7) and the planting claw (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). And, as shown in FIG. 8, the planting claw (17) on the front side is stopped in the seedling taking-out guide (56) above the float (34), and the planting claw (17) removes the seedlings cut and held. Preventing by the seedling take-out guide (56) to eliminate stump occurrence at the time of restarting planting, and stop the rear side planting claw (17) above the float (34) at a position higher than the upper end of the last planted seedling (57). Prevent the planting claw (17) from rushing into the rice field and disturbing the rice field. Were cut seedlings were securely held in the planting claw (17), also the planting claw (17) or claws Case (2
The method 2) prevents the planted seedlings from coming into contact and falling.

[0015]

As is apparent from the above embodiments, the present invention provides a rotary case (21), which is rotated in one direction at a constant speed, in which a planting claw (17) is attached via a claw case (22). In the rotary case (21), one planting claw (17), which is symmetrically arranged about the axis of rotation, is placed in the seedling extraction guide (56) and the other planting claw (1).
7) is configured so that it can be stopped above the float (34), respectively, and the distance between the pair of the seedling pick-up guides (56) (56) provided on both sides of the seedling pick-up port (37) of the seedling mount (16) is the base end. Formed so that the tip side becomes smaller continuously than the side,
The pair of the seedling take-out guides (56) (56) is configured to hold the seedlings of the planting claws (17) at the stop position from the left and right, and the planting claws between the seedling cutting and the rice field ( Even if you stop 17), you can prevent the stump immediately after restarting planting by reliably holding the cut seedlings, and change the direction at the edge of the ridge where you repeatedly stop and drive the planting claw (17) compared to the past. Can be carried out safely, and the rice planting work can be performed efficiently with almost no need for supplementary planting of the missing plant at the edge of the ridge.
By compensating for the decrease in the seedling holding force on the tip side of the seedling taking-out guide (56) by reducing the interval, a structure for keeping the seedling holding force between the base end and the tip of the seedling taking-out guide (56) substantially uniform is easy. In addition, the seedling pick-up guide (56) which does not easily transmit mechanical vibration can be easily prevented from being deformed and dropped by holding the seedling on the tip side.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a planting part showing an embodiment of the present invention.

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 rear view of the main part.

[Explanation of symbols]

 (16) Seedling table (17) Claw with planting (21) Rotary case (22) Claw case (34) Float (37) Seedling outlet (56) Seedling removal guide

Claims (1)

(57) [Claims] 1. A device in which a planting claw is attached to a rotary case that rotates at a constant speed in one direction via a claw case, wherein one planting claw is symmetrically arranged about the rotary shaft center in the rotary case. Inside the seedling extraction guide, and the other planting claw can be stopped above the float, respectively,
An interval between the pair of seedling take-out guides provided on both sides of the seedling take-out port of the seedling placing table is formed so that the tip side is continuously smaller than the base end side, and the pair of the seedling take-out guide tips is used to plant a stop position. A planting device for a rice transplanter, which is configured so that the nail seedlings can be held from the left and right.