JPH0757129B2 - Rice transplanter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field] The present invention comprises a seedling placing table that reciprocates left and right, and a planting claw for picking up and planting one seedling from the seedling placing table. Rice transplanter that performs rice transplanting work.

"Prior Art" Conventionally, as disclosed in Japanese Patent Laid-Open No. 60-66907, there has been a technology of forming a recess on the upper surface of a flattening float for facing a rotary case provided with a planting claw via a claw case.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, since the claw case is arranged above the concave portion of the float, it is necessary to secure a space for moving the planting claw on the upper surface side of the float. Therefore, the attachment of the float and the rotary case is performed. The distance between the plants cannot be easily reduced, and the planting depth adjustment range of the seedlings that adjusts the float up and down cannot be easily expanded to the deep planting side. However, there is a problem that it is not possible to easily improve the above.

"Means for Solving the Problems" However, the present invention relates to a planting device for a rice transplanter that attaches a planting claw via a claw case to a rotary case that rotates in one direction at a constant speed. The rotary case is arranged above and below the left and right width of the narrow tail portion, and the claw case is arranged outward from the side surface of the float, and is flat in the front-rear direction at a lower position on the upper surface of the float tail portion facing the rotary case. In addition to forming such a concave portion, side surfaces having a full width above and below the float are formed between the front portion of the concave portion opened in an inverted trapezoidal shape in a side view and the step of the wide portion of the float front portion.

Therefore, since the rotary case is arranged on the upper surface of the float, the float can prevent the rotary case from colliding with an obstacle or a ridge during traveling on the road or when changing the direction of the headland. Since the claw case is placed on the other side, the mounting space between the float and the rotary case can be easily reduced, and the concave part of the float facing the rotary case is formed flat at the low position in the front-rear direction. It is possible to easily expand the planting depth adjustment range of seedlings that adjusts the float up and down with a structure that lowers, and it is possible to easily make the vertical width compact of the rotary case mounting part and improve the planting depth adjustment function of seedlings,
Since the side surface of the float top and bottom full width is formed on the front side of the concave portion of the float, the mud water discharged backward from the step of the front wide part of the float moves backward by the guide of the float side surface,
The amount of muddy water entering the concave portion of the float can be easily reduced, and the planting traveling speed can be increased and the rotary case mounting position can be easily reduced.

[Examples] Examples 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
The figure shows the same plan view, in which (1) is a traveling vehicle on which an operator rides, and the rear end of the vehicle body frame (3) on which the engine (2) is mounted is connected to the mission case (4). Front wheels (6) for traveling paddy fields are supported on both front sides of the mission case (4) through front axle cases (5), and transmission cases (7), which are axle cases, are supported on both rear sides 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). And the hood (9) that covers the engine (2)
The seedling stand (10) is attached to the outside on both sides, and the transmission case (7) and the like are covered with a vehicle body cover (12) forming a step (11), and a driver's seat (13) is provided above the vehicle body cover (12). ) Is attached, and a steering handle (14) is provided at the rear of the hood (9) in front of the driver's seat (13).

Further, in the figure, (15) is a planting part having a multiple row planting table (16) and a plurality of planting claws (17) ... The (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 is rotated at a constant speed in one direction as shown in FIG. The rotary case (21) is arranged in the planting case (20), and the rotary case (21) is provided with claw cases (22) and (22) symmetrically with respect to the center of the rotary shaft. ) Attach the planting claw (17) to (). Further, a support frame (24) is provided on the front side of the planting case (20) through a center pin (23), and a top link (25) is provided.
A support frame (24) is connected to the rear side of the traveling vehicle (1) via a three-point link mechanism (27) including a lower link (26), and the planting section (15) is connected via the link mechanism (27). Equipped with a lifting cylinder (28) for lifting and lowering the front and rear wheels (6)
(8) is 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 table (16) that slides back and forth from side to side, and the rice planting work is continuously performed. Configure to do.

Further, in the figure, (29) is a traveling speed change lever, (30) is a planting lifting lever, (31) is a planting sensitivity adjusting lever, (32) is a traveling clutch pedal, (33) and (33) are left and right brake pedals,
Denoted at (34) are equalizing floats for flattening the surface, which support the floats (34) below the planting case (20) via a planting depth adjusting link (35) and the like.

Further, as shown in FIG. 5, the nail case (22) is provided with respect to the seedling taking-out port (37) of the seedling taking-out plate (36) provided at the lower end of the seedling placing table (16).
The two planting claws (17) (17) provided on the rotary case (21) are alternately moved via the (22), and the two planting claws (17) are rotated by one rotation of the rotary case (21). According to (17), two seedlings are planted.

Next, as shown in FIGS. 6 and 7, a planting claw drive shaft (38) is rotatably supported at the rear end of the planting case (20),
The rotary cases (21) and (21) are symmetrically fixed to both ends of the drive shaft (38), and a sprocket (40) for suspending the planting pawl drive chain (39) is provided in the middle of the drive shaft (38) for free rotation. Then, the sprocket (40) is interlockingly connected to the drive shaft (38) through a unit clutch (42) having an upper stop cam (41) that is an upper stop mechanism, and the rotation of the clutch lever (43). By operation, the eccentric pin (45) of the clutch shaft (44) engages with the trough of the cam (41), and the cam (4
The rotation of 1) pulls the clutch claw on the cam (41) side away from the clutch claw of the sprocket (40) to disconnect the unit clutch (42), while the rotary case (21)
Half turn, the cam (41) causes the unit clutch (4
2) A cam (4) engageable with the eccentric pin (45) so that it can be cut.
Two troughs of 1) are provided at 180-degree intervals, and two stop positions are formed during one rotation of the rotary case (21).

Further, the sun gear (46) is loosely fitted to the planting pawl drive shaft (38), and the sun gear (46) is moved through the phase adjusting lever (47).
The sun gear (46) with the same number of teeth as the sun gear (46).
8) and a planetary gear (49). 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). In addition, the respective gears (46) (48) (49) are eccentrically supported by the respective shafts (38) (50) (51), and the sun gear (46) also includes idle gears (48) (48). The planetary gears (49) and (49) are constantly meshed with each other via the. The sun gear (46) is fixedly supported on the planting case (20), and the rotary case (21) is mounted via the planting claw drive shaft (38). Rotate at a constant speed,
The planting claws (17) (17) at both ends of the rotary case (21) are alternately moved to the seedling take-out port (37) at the lower end of the tilt of the seedling placing table (16) and are interlocked with the rotation of the rotary case (21). Through the gears (46) (48) (49) and the claw case shaft (5
Rotate 1) at a non-constant speed to make the rotation of the nail case shaft (51) faster than the rotation of the rotary case (21) after cutting the seedlings on the seedling placing table (16) to the rice field, and planting seedlings on the rice field. The rotation of the claw case shaft (51) is slower than the rotation of the rotary case (21) between the rear and the seedling take-out port (37), so that the seedling take-out port (37)
The rotation of the rotary case (21) and the rotation of the claw case shaft (51) are made to be approximately the same in the vicinity and near the paddy planting part, and the planting claw (1
The planting locus of 7) is formed in a vertically elongated oval shape in front of the rotary case (21).

Further, the position adjusting lever (52) is attached to the rotary case (21).
And fix one end of the cam shaft (53) through the
The cam shaft (51) to be loosely fitted is pierced through the middle of the cam shaft (53), and the push shaft (54) connected to the pushing claw (17a) for forced planting is connected to the cam shaft (55) via the push arm (55). 53) are connected, the push rod (54) is advanced through the cam shaft (53) and push arm (55) when the planting claw (17) plunges into the paddy field, and is planted by the pushing claw (17a). The seedlings sandwiched between the nails (17) are extruded into the soil.

Further, as shown in FIG. 1, a flexible and elastic seedling take-out guide (56) is provided which fixes the upper end to the seedling take-out port (37) on both sides and extends the lower end downward, and the rotary case (21) has both ends. Install one of the planting claws (17) on the seedling take-out guide (56).
The mounting angle of the rotary case (21) with respect to the planting pawl drive shaft (38) and the upper stop cam () so that the other planting pawl (17) is stopped above the float (34). The position of the unit clutch (42) disengagement timing of 41) is adjusted and set, and the planting claws (17) that stop between cutting the seedlings and reaching the paddy field are sandwiched from both sides by the seedling removal guides (56). While holding the seedlings of the planting claws (17), the planting claws (1
7) and claw case (22) lower side and rotary case (2
1) The lower side is located above the upper end of the planted seedlings (57) to prevent the planted claws (17) or nail case (22) on the rear side of the machine from pushing down the final planted seedlings.

As shown in FIGS. 1 and 8, the planting pawl drive shaft (38)
The rear end side of the planting case (20) that axially supports the plant is extended substantially linearly in the machine longitudinal direction, and the drive shaft (38) is provided rather than the seedling take-out plate (36) provided on the upper surface side of the planting case (20). The rotary case (21) and the float (34).
The upper surface of the rotary case (21) is provided with a recess (34a) in the upper surface of the float (34) directly below, and the rotary locus of the lower end of the rotary case (21) passes through the recess (34a). Even if the rotary case (21) and the upper surface of the float (34) overlap each other in a side view, the rotary case (21) and the float (34) can be arranged so as not to interfere with each other.

As is clear from the above, the planting claw (1) is attached to the rotary case (21) that rotates at a constant speed in one direction via the claw case (22).
7) In the planting device of the rice transplanter for mounting, the rotary case (21) is arranged above and below the lateral width of the narrow part of the tail of the flattening float (34) so that it is outside the side surface of the float (34). The claw case (22) is arranged toward one side, and a flat concave portion (34a) in the front-rear direction is formed at a low position on the upper surface of the tail portion of the float (34) facing the rotary case (21), and a side view reverse table is provided. The upper and lower sides of the float (34) are formed between the front portion of the concave portion (34a) opened in a shape and the step of the wide portion of the front portion of the float (34). The rotary case (21) and the float (34) The space between the upper surface and the upper surface of the float (3
4) The vertical adjustment width of 4) is increased to enable deep planting, and it is configured to prevent muddy water drained from the step of the front wide part of the float (34) from entering the recess (34a).

This embodiment is configured as described above, and the planting pawl drive shaft (3
By 8), the rotary case (21) is continuously rotated at a constant speed in one direction in the longitudinal direction of the airframe around this,
The claw case shaft (51) rotates at a non-constant speed via the gears (46) (48) (49), causing the planting claw (17) to be in the seedling cutting posture in front of the seedling take-out port (37), and the rice field. The planting claws (17) are moved to the planting position in a rushed state, and one seedling of one plant is planted by rotating the rotary case (21) half a turn. The clutch lever (4
By performing the planting stop operation via 3), the eccentric pin (45) contacts the upper stop cam (41) to disconnect the unit clutch (42), and the planting on the front side is performed as shown in FIG. Nail (1
7) is stopped in the seedling pick-up guide (56) above the float (34), and the seedling pick-up guide (56) prevents the seedlings that are cut and held by the planting claws (17) from falling off. The planting claw (17) on the rear side is stopped above the float (34) at a position higher than the upper end of the last planted seedling (57), and the planting claw (17) rushes into the rice field. To prevent the paddy field from being disturbed, to ensure that the cut seedlings are held by the planting claws (17), and the planting claws (17) or claw cases (22) make contact with the planted seedlings and lay them down. Is to prevent.

In addition, even if the float (34) is brought close to and supported by the planting case (20) by operating the planting depth adjustment link (35) and the rice planting work is performed in a deep planting state, the rotary case (2
1) and the upper surface of the float (34) overlap, but since the rotary case (21) passes through the inside of the recess (34a), the float (3
4) There is no interference with the top surface, so the planted case (2
0) A rotary case (2) such as a chain (39) installed inside
1) The drive system 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 formed so as to be narrow in the longitudinal direction of the machine body and vertically long. The seedling cutting posture and the planting posture of the attached nail can be properly obtained, and the setting of the attached nail posture can be easily performed.

"Effects of the Invention" As is apparent from the embodiments described above, the present invention is a planting machine for a rice transplanter in which a planting claw (17) is attached to a rotary case (21) that rotates in one direction at a constant speed via a claw case (22). In the attached device, the rotary case (21) is arranged above and below the left and right width of the narrow tail portion of the flattening float (34), and the claw case (22) is arranged outside the side surface of the float (34). The float (34) that is arranged and faces the rotary case (21).
A recess (34a) that is flat in the front-rear direction is formed at a low position on the upper surface of the tail, and the front part of the recess (34a) that is opened in an inverted trapezoidal shape in side view and the step between the wide part of the front part of the float (34) are formed. The upper and lower sides of the float (34) are formed between them, and the rotary case (21) is provided on the upper surface of the float (34).
Since the rotary case (21) collides with an obstacle or a ridge when traveling on the road or when changing the direction of a headland, the float (34) can prevent the rotary case (21), and the claw case can be located outside the float (34). (22) will be placed,
Since the mounting distance between the float (34) and the rotary case (21) can be easily reduced, and the recess (34a) of the float (34) facing the rotary case (21) is formed flat at the low position in the front-rear direction. , The rotary case (21) mounting position can be lowered to easily expand the planting depth adjustment range of the seedlings for vertically adjusting the float (34).
1) The vertical width of the mounting part can be made compact and the planting depth control range of seedlings can be easily improved. In addition, the float (34) has a full width in the vertical direction on the front side of the recess (34a). Therefore, the muddy water drained rearward from the step of the front wide portion of the float (34) is moved backward by the guide of the side surface of the float (34), and the concave portion (34) of the float (34) is
a) The amount of muddy water entering can be easily reduced, and the planting traveling speed can be increased and the rotary case (21) mounting position can be easily reduced.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a planting part showing an embodiment of the present invention,
2 is a side view of the whole, FIG. 3 is a plan view of the same, FIG. 4 is a side view of a planting part, FIG. 5 is a plan view of the same, FIG. 6 is a sectional side view, and FIG. 7 is a sectional plan view. FIG. 8 is a plan view of the float. (17) …… Planted claw (21) …… Rotary case (22) …… Claw case (34) …… Float (34a) …… Recess

Claims (1)

[Claims] 1. A planting device for a rice transplanter, wherein a planting claw (17) is mounted on a rotary case (21) that rotates at a constant speed in one direction via a claw case (22).
4) The rotary case (2
1) is arranged, and the claw case (22) is arranged outside the side surface of the float (34), and the rotary case (21) is arranged.
A flat recessed portion (34a) in the front-rear direction is formed at a low position on the upper surface of the tail portion of the float (34) facing the front portion of the recessed portion (34a) which is open in an inverted trapezoidal shape in side view, and the float (34). ) Float (34) between the front wide part and the step
A rice transplanter characterized by the formation of full width top and bottom sides.