JPH08205645A - Rice transplanter planting device - Google Patents

Abstract

(57) [Abstract] [Problem] Claw case (22) structure and bolt (4)
4) It is possible to eliminate the problem that the mounting positions are mutually limited. SOLUTION: A claw case shaft (45) is rotatably supported by a rotary case (21), and a claw case (22) is fixed to the claw case shaft (45) by bolts (44). In the planting device of the rice transplanter for attaching the planting claw (17) to the nail, the claw case (22) is centered on the straight line (C) connecting the rotation center of the claw case shaft (45) and the tip of the planting claw (17). ) Is provided so as to be offset to one side, and the bolt (44) is provided so as to be offset to the other side opposite to the claw case (22), and a claw case shaft (for attaching the claw case (22) ( The flange portion (45a) of 45) is formed in a disc shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter capable of vertically swinging a planting arm during a rotary motion of a rotary case to perform seedling planting work by a planting claw, and mounting a planting arm of a rotary case to be rotated. The present invention relates to a rotary planting device in which a planting arm having a planting claw is fixedly supported by a member via a mounting bolt.

[0002]

2. Description of the Related Art Conventionally, as disclosed in JP-A-61-149012, a claw case shaft is rotatably supported by a rotary case, the claw case is bolted and fixed to the claw case shaft, and the claw case is planted in the claw case. There was a technique to attach a nail.

[0003]

In the prior art described above, since the opening / closing cam is provided on the tip side of the claw case to which the opening / closing claw (block claw) is attached, the tip side of the claw case is formed to be larger than the base end side. However, there is a problem that the claw case is apt to be unstablely supported by the rotary case, and the claw case support structure cannot be simplified. Further, in the structure in which the planting claw having the pushing claw is attached to the claw case, the pushing cam for activating the pushing claw is provided on the proximal side of the claw case, thereby eliminating the above-mentioned problem that the claw case shape becomes unbalanced. However, while the claw case is arranged offset to one side around the straight line connecting the center of rotation of the claw case shaft and the tip of the planting claw, the bolts for fixing the claw case were distributed to both sides and attached. The claw case structure and the bolt mounting position are easily limited to each other, and the bolt attaching / detaching operation becomes troublesome, and the bolt is arranged so as to face the claw case deforming force around the straight line. There was a problem that the supporting force against the deforming force was likely to be insufficient.

[0004]

SUMMARY OF THE INVENTION However, according to the present invention, the rotary case is provided with a claw case shaft rotatably supported, the claw case shaft is bolted and fixed to the claw case shaft, and the planting claw is attached to the claw case. In a planting device of a machine, the claw case is arranged so as to be offset to one side about a straight line connecting the rotation center of the claw case shaft and the tip of the planting claw, and the other side opposite to the claw case is arranged. While disposing the bolts in a biased manner, the flange part of the claw case shaft for mounting the claw case is formed into a disk shape, and it is possible to eliminate the problem that the claw case structure and the bolt mounting position are mutually limited, The bolts can be arranged by coping with both the above-mentioned nail case deforming force around the straight line and the nail case deforming force around the nail case axis, and it is possible to easily improve the attachment / detachment operability of the bolts and secure the nail case supporting force. For example Even if the design of the attached claws or claw case is improved and the design is changed, simply changing the position of the bolt holes on the flange will not change the structure of the claw case shaft side, and the plant with different specifications will be used. It is possible to easily attach attached claws and the like.

[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 claw portion, FIG. 2 is a side view of the riding rice transplanter, and FIG. 3 is a plan view of the same.
Is a traveling vehicle on which an operator rides. The rear end of the vehicle body frame (3) carrying the engine (2) is continuously connected to the mission case (4), and front axle cases ( The front wheel (6) for traveling paddy fields is supported via 5), and the rear wheels (8) for traveling paddy field are supported on both rear sides of the mission case (4) via transmission cases (7). And the engine (2)
Covering the hood (9) Spare seedling stand (10) on both sides outward
And the transmission case (7) and the like are covered by a vehicle body cover (12) forming a step (11),
A driver's seat (13) is attached to the upper part of the vehicle body cover (12), and the hood (9) is located in front of the driver's seat (13).
A steering handle (14) is provided at the rear.

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 supported by the planting case (20), and a pair of claw cases (22) (22), which are planting arms, are symmetrically arranged about a rotation axis of the case (21). The claw case (22) is installed and the planting claw (17) is attached to the tip of the claw case (22). Further, a support frame (24) is provided on the front side of the planting case (20) through a pivot shaft (23), and a three-point link mechanism (27) including a top link (25) and a lower link (26) is provided. An elevating cylinder (28) that connects a support frame (24) to the rear side of the traveling vehicle (1) via the link mechanism (27) and moves the planting part (15) up and down.
The seedling mounting table (1) for driving the front and rear wheels (6) and (8) to move at a substantially constant speed and at the same time reciprocally slide left and right.
6) Take out the seedling of one plant from the planting nail (17),
It is configured to continuously perform seedling planting work.

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.

As shown in FIG. 6, the planting case (20).
At the rear end, a planted pawl drive shaft (38), which is an output shaft, is rotatably supported, and a rotary case (2) is provided at both ends of the drive shaft (38).
1) (21) is symmetrically fixed and supported. Further, the sun gear (39) is loosely fitted to the planting pawl drive shaft (38) in the rotary case (21), and the sun gear (39) is phased to the planting case (20) through the phase adjusting plate (40). The idle gear (41) and the planetary gear (42), which have the same number of teeth as the sun gear (39), are fixedly positioned, and the idle gear (41) and the claw case ( The planetary gear (42) is axially supported in the rotary case (21) through a claw case shaft (45) which is a planting arm mounting member fixed to the bolt case (22) with a bolt (44). Each gear (3
9) (41) (42) are each axis (38) (43) (45)
The center sun gear (39) is symmetrically eccentrically centered on the center of the sun gear (39), and two planetary gears (42) and (42) are constantly meshed in a line with the idle gears (41) and (41). The sun gear (3
9) is fixedly supported, the rotary case (21) is rotated at a constant speed via the planting claw drive shaft (38), and the planting claws (17) (17) at both ends of the rotary case (21) are alternately placed. It is provided so as to be moved down to the seedling take-out port (37) at the lower end of the tilt of the table (16). And the rotary case (2
The gears (39) (41) are interlocked with the rotation of 1).
The claw case shaft (45) is rotated at a non-constant speed via the (42), and the claw case shaft (45) rotates faster than the rotary case (21) before and after the seedling take-out position of the seedling mounting table (16). And the posture of the planting claw (17) is turned upward, and the posture of the planting claw (17) is set downward by rotating the claw case shaft (45) slower than the rotation of the rotary case (21) at the front and rear positions of seedling planting. As a locus (L) for movement planting with a planting claw (17)
Is configured so as to draw a vertically long ellipse in front of the rotary case (21).

Further, the pawl case shaft (45) allows the cam shaft (46) to freely freely penetrate therethrough, and the cam shaft (4)
One end of 6) is rotatably fixedly supported by the rotary case (21) through the position adjusting plate (47) and the bolt (48), and the other end of the cam shaft (46) is held by the claw case (2).
The push rod (49), which is connected to the push-out claw (17a) for forced planting in 2), is connected via the push arm (50) and the push-out cam (51), and the planting claw (17) plunges into the rice field. At this time, the push rod (49) is advanced to push the seedlings sandwiched by the planting claw (17) into the soil by the pushing claw (17a).

By the way, as shown in FIG.
7) is on an extension line (C) that connects substantially the centers of at least two bolts (44) of the bolts (44) that attach the nail case (22) to the flange portion (45a) of the nail case shaft (45). The nail case (22) is provided so that the tip of the nail is positioned so that a force in the direction of FIGS. 1 and 6P is applied to the planting nail (17) during seedling removal or seedling planting.
The two lateral bolts (44) are used to minimize the bending in the left and right directions so that stable planting work can be performed.

As is apparent from the above, the pawl case shaft (45) is rotatably supported by the rotary case (21),
Attach the claw case (22) to the claw case shaft (45) with the bolt (4
4) Fix and fix, and plant nail (17) in nail case (22).
In the planting device of the rice transplanter for mounting, the nail case (2) is centered on the extension line (C) which is a straight line connecting the center of rotation of the nail case shaft (45) and the tip of the planting nail (17).
2) is arranged so as to be offset to one side, and the claw case (2
The bolt (44) is arranged so as to be offset to the other side opposite to 2), and the flange portion (45a) of the claw case shaft (45) to which the claw case (22) is mounted is formed in a disc shape. There is.

Reference numeral (52) is a seedling guide whose upper end is fixed on both sides of the seedling take-out port (37) and whose lower end extends downward.

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 (45) rotates at a non-constant speed via the gears (39) (41) (42), 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. Is to be planted.

Thus, when the seedlings are picked up from the seedling mounting table (16) by the planting claws (17) or when the seedlings are planted in the field, a force in the direction of FIGS. 1 and 6P is applied to the tip of the claws (17). Even when the claw is applied, the tip of the claw (17) is located on the extension line (C) connecting the substantial centers of the two bolts (44), so that the mounting strength of the claw case (22) can be increased. It is possible to hold the claw case (22) in a stable manner, to suppress the lateral bending of the claw case (22) to a minimum, and to prevent the load from being concentrated on a specific bolt (44) to prevent the bolt (44) from being loosened or damaged. It can be achieved.

[0016]

As is apparent from the above embodiments, according to the present invention, the rotary case (21) rotatably supports the pawl case shaft (45), and the pawl case shaft (45) has the pawl case (2).
2) Fix the bolt (44) and fix it, and then the claw case (22).
In the planting device of the rice transplanter for mounting the planting claw (17) on the planting claw (17), the center of rotation of the claw case shaft (45) and the planting claw (1
7) Centering on the straight line (C) connecting the tips,
2) is arranged so as to be offset to one side, and the claw case (2
The bolt (44) is arranged on the other side opposite to 2) while being offset, and the flange portion (45a) of the claw case shaft (45) for mounting the claw case (22) is formed in a disc shape. Then, the structure of the claw case (22) and the bolt (4)
4) It is possible to eliminate the problem that the mounting positions are mutually limited, and both the deforming force of the claw case (22) around the straight line (C) and the deforming force of the claw case (22) around the claw case shaft (45) can be achieved. It is possible to arrange the bolt (44) in response to the above, and it is possible to easily improve the attachment / detachment operability of the bolt (44) and to secure the supporting force of the claw case (22), and
For example, even if the planting claw (17) or the claw case (22) is improved and the design is changed, the position of the bolt hole opened in the flange portion (45a) is simply changed, and the claw case shaft (4)
The planting claws (17) having different specifications can be easily attached without substantially changing the structure on the 5) side.

[Brief description of drawings]

FIG. 1 is a side view of a planting claw portion.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory side view of a planting part.

FIG. 5 is an explanatory view of the same plane.

FIG. 6 is an explanatory cross-sectional view of a rotary case portion.

[Explanation of symbols]

 (17) Claw with planting (21) Rotary case (22) Claw case (44) Bolt (45) Claw case shaft

Claims (1)

[Claims] 1. A claw case shaft (45) is rotatably supported by a rotary case (21), and a claw case (22) is fixed to the claw case shaft (45) by bolts (44). In the planting device of the rice transplanter for attaching the planting claw (17) to the claw case (17), the claw case (about the straight line (C) connecting the rotation center of the claw case shaft (45) and the tip of the planting claw (17) is the center. 22) is provided so as to be offset to one side and the bolt (44) is provided so as to be offset to the other side opposite to the claw case (22), and the claw case shaft to which the claw case (22) is attached is attached. A planting device for a rice transplanter, wherein the flange portion (45a) of (45) is formed in a disc shape.