JP2535315B2 - 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 relates to a rice transplanting plant which includes a seedling table for reciprocating movement to the left and right, and a planting claw for taking out and planting a seedling of one strain from the seedling table. The present invention relates to a planting device for a machine.

[0002]

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

[0003]

In the prior art described above, since the position of the planting case where the rotary case is mounted is formed higher than the seedling take-out plate of the seedling mounting table, the drive system of the rotary case is set inside the planting case. It has to be folded and configured,
The rotary case drive system cannot be easily simplified, and by raising the rotary case support position relative to the float, the planting claw's planting locus becomes wider in the machine front-back direction, and the proper planting claw is provided. There was a problem that the seedling cutting posture and planting posture could not be easily obtained.

[0004]

SUMMARY OF THE INVENTION However, according to the present invention, a planting claw is attached to a rotary case which is rotated at a constant speed in one direction through a claw case, and a planting depth is provided in the planting case in which the rotary case is provided. In a planting device of a rice transplanter that mounts a float via an adjustment link and forms a recess on the upper surface of the float facing the rotary case, a recess on the upper surface of the float that is on the front side of the planting locus rear side of the planting claw. By connecting the planting depth adjustment link to the float on the front side, the rotary case mounting position can be made lower than before to simplify the rotary case drive structure and improve the planting claw planting function. Easy to do,
Since the left and right wide float upper surfaces in front of the recess are supported by the planting depth adjusting link, the recess and the link connecting portion can be formed on the float upper surface without being restricted to each other, and the link connecting portion serves as a fulcrum. Since the front part of the float moves upward with the muddy water resistance to move the planting movement, the concave part on the rear side of the float descends due to the running resistance of the float planting, and the distance between the rotary case and the plant increases. It is possible to easily increase the speed and improve the workability for deep planting of seedlings in which the distance between the rotary case and the float is reduced.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. 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 of the same. In FIG. 1, (1) is a traveling vehicle on which an operator rides, and an engine (2) is used. The rear end of the body frame (3) to be mounted is connected to the transmission case (4),
Front paddle traveling front wheels (6) are supported on both front sides of the transmission case (4) via a front axle case (5), and a transmission case (7) serving as an axle case is provided on both rear sides of the transmission case (4). ), And a rear paddle (8) for traveling in paddy fields 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 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. A rotary case (21) to be rotated is arranged in the planted case (20), and claw cases (22) and (22) are arranged in the rotary case (21) at symmetrical positions with respect to the axis of the rotary shaft. Attach the planting claw (17) to (22). 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. The support frame (24) is connected to the rear side of the traveling vehicle (1), and the planting part (15) is connected via the link mechanism (27).
Equipped with a lifting cylinder (28) for moving up and down, the front and rear wheels (6) and (8) are driven to move at a substantially constant speed, and at the same time, from the seedling stand (16) that slides back and forth to the left and right The seedlings are taken out by the planting claws (17) and the rice planting operation is continuously performed.

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.

Further, as shown in FIGS. 1 and 8, the rear end side of the planting case (20) which pivotally supports the planting claw drive shaft (38) is extended substantially linearly in the longitudinal direction of the machine body to form a planting case. (20) The drive shaft (38) rather than the seedling take-out plate (36) provided on the upper surface side
Is arranged at a low position, and the rotary case (2
1) is arranged above the upper surface of the float (34), and the recess (3) is formed on the upper surface of the float (34) directly below the rotary case (21).
4a), the lower end side rotation locus of the rotary case (21) passes through the recess (34a) thereof, and the rotary case (21) and the upper surface of the float (34) overlap each other in a side view. Rotary case (21) in a state of non-interference
In addition, the float (34) can be arranged.

As is apparent from the above, the planting claw (17) is attached to the rotary case (21) which is rotated at a constant speed in one direction through the claw case (22), and the rotary case (21) is provided. The float (34) is attached to the attached case (20) through the planting depth adjusting link (35), and the float (3) facing the rotary case (21) is attached.
4) In a planting device for a rice transplanter that forms a recess (34a) on the upper surface, the planting locus of the planting claw (17) is located on the front side of the rear side and further than the recess (34a) on the upper surface of the float (34). The planting depth adjustment link (35) is connected to the support (58) on the upper surface of the float (34) on the front side. Then, the mounting position of the rotary case (21) is lowered as compared with the conventional case, and a support body (58) is provided on the upper surface of the wide float (34) in front of the recess (34a) to provide a planting depth adjusting link (35). ), And the front part of the float (34) moves upward with the support of the link (35) connecting part (58) serving as a fulcrum so that the front part of the float (34) rises due to muddy water resistance. The recessed portion (34a) on the rear side of the float (34) is lowered by the planting running resistance, so that the space between the recess (34a) and the rotary case (21) is enlarged.

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 machine front-rear direction about this 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 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). 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.

Further, even if the float (34) is brought close to and supported by the planting case (20) by operating the planting depth adjusting link (35) and the rice planting work is carried out in a deep planting state, the rotary case (from the side view) ( 21) and the upper surface of the float (34) overlap each other, but since the rotary case (21) passes through the inside of the recess (34a), the rotary case (21) does not interfere with the upper surface of the float (34) and therefore is provided inside the planted case (20). The drive system of the rotary case (21) such as the chain (39) can be formed substantially linearly in parallel with the upper surface of the float (34), and the locus of the planting claw (17) can be narrowed vertically in the machine longitudinal direction. Therefore, the seedling cutting posture and planting posture of the planting nail can be properly obtained, and the posture of the planting nail can be easily set.

Further, as shown in FIG. 9, the float (34)
It is also possible to prevent the interference between the upper surface of the float (34) and the rotary case (21) by mounting the rotary case (21) behind the rear end and positioning the float (34) outside the rotation locus.

As shown in FIG. 10, the planted case (2
0) The tail (34b) lateral width of the float (34) is formed smaller than the left and right rotary case (21) (21) mounting intervals, and the rotary case (21) is placed outside the tail (34b) of the float (34). By passing, the interference between the rotary case (21) and the upper surface of the float (34) can be prevented.

Further, as shown in FIG. 11, the float (34)
It is also possible to prevent the interference between the rotary case (21) and the upper surface of the float (34) by forming the tail portion (34c) of the inverted U-shape and disposing the rotary case (21) above the inside of the inverted U-shape.

Further, as shown in FIG. 12, a through hole (3) is formed in the float (34) immediately below the rotary cases (21) (21).
4d) and (34d) are opened, and the rotary case (21) is rotated so as to pass through the through hole (34d),
Interference between the rotary case (21) and the upper surface of the float (34) can be prevented.

Further, as shown in FIG. 13, the float (34)
The tail (34e) is formed in an inverted U shape, the through hole (34f) is opened in the tail (34e) directly below the rotary case (21), and the float (34) is formed symmetrically. 34f) It is also possible to rotate the rotary case (21) so as to pass through the inside thereof to prevent interference between the rotary case (21) and the upper surface of the float (34).

As shown in FIGS. 11 and 13, it is also possible to dispose a single rotary case (21) in a cantilevered manner on one side of the planting case (20), and the seedling table ( 16) With respect to the number of planting threads or the arrangement configuration of the float (34), both-sided support of a pair of left and right rotary cases (21) and (21) and cantilever support of a single rotary case (21) are selected. , Planting nails (17) or floats (34)
It goes without saying that the support structure of No. 1 can be arbitrarily configured according to the number of planting lines.

[0023]

As is apparent from the above embodiments, according to the present invention, the planting claw (17) is attached to the rotary case (21) which is rotated at a constant speed in one direction through the claw case (22), and the rotary case is also provided. Case (2) with case (21)
0) the planting device of the rice transplanter, in which the float (34) is attached to the float (34) through the planting depth adjusting link (35) and the recess (34a) is formed on the upper surface of the float (34) facing the rotary case (21). At the front of the rear of the planting locus of the planting claw (17) and at the front of the recess (34a) on the upper surface of the float (34), the float (34) is attached to the float (34). ), The rotary case (21) mounting position is lowered as compared with the conventional case, and the rotary case (21) drive structure is simplified and the planting claw (17) is improved in planting function. In addition, since the upper surface of the float (34) having a wide left and right in front of the recess (34a) is supported by the planting depth adjusting link (35), the recess (34a) and the link (3).
5) The connection part can be formed on the upper surface of the float (34) without being restricted by each other, and the front part of the float (34) is raised with the connection part of the link (35) as a fulcrum so that the front part of the float (34) is raised and planted. Float (3
Due to the planting running resistance of 4), the recess (34a) on the rear side of the float (34) is lowered to widen the distance from the rotary case (21), and the running resistance is increased, and the planting speed is increased and the rotary case (21). And floats (34)
It is possible to easily improve the workability of deep planting of seedlings with a small interval.

[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 plan view of the float.

FIG. 9 is an explanatory view of a float showing another embodiment.

FIG. 10 is an explanatory diagram of the same.

FIG. 11 is an explanatory diagram of the same.

FIG. 12 is an explanatory diagram of the same.

FIG. 13 is an explanatory diagram of the same.

[Explanation of symbols]

 (17) Planting claw (20) Planting case (21) Rotary case (22) Claw case (34) Float (34a) Recess (35) Planting depth adjustment link

Claims (1)

(57) [Claims] 1. A rotary case that is rotated at a constant speed in one direction is attached with a planting claw via a claw case, and a float is attached to the planting case provided with the rotary case via a planting depth adjusting link. In a planting device of a rice transplanter that forms a recess on the upper surface of the float facing the rotary case, the planting depth of the planting claw on the front side of the rear side of the planting claw and on the front side of the recess of the upper surface of the float. A planting device for rice transplanters, characterized in that the adjusting link is connected to the float.