JPH0822175B2 - Planting claw case to prevent interference when planting rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention proposes a seedling planting device of a rice transplanter for splitting seedlings from a seedling mat on a seedling mounting table and planting them in a field. Of these, the present invention relates to a planted claw case having a plurality of planted claws within the radius of rotation of the planted claw case, and particularly to a planted claw case for preventing interference of rotary planting.

(Prior Art) The planting section of a conventional rice transplanter is as follows.

That is, in FIG. 17 and FIG. 18, the tip of the drive arm (1) driven from the planted transmission case is pivotally supported (9) in the middle of the planted arm (2), and the tip of the planted arm (2) is The lower end is pivotally supported by the driven arm (3). A fixed claw (4) as a planting claw is attached to the tip of the planting arm (2), and there is an extruding claw (5) that moves up and down in the planting direction.
The rod (6) of the pushing claw (5) moves up and down by the swing lever (8) pivotally supported (7) in the case of the planting arm (2),
The lower end of the swing lever (8) is in contact with the cam (10) of the pivot portion (9), so that the swing lever (8) swings.

(11) is a spring that presses the swing lever (8),
Reference numeral (12) is a guide for guiding the rod (6), and the rod (6) and the lever (8) are pivotally supported to each other by a connecting fitting (13).

Therefore, the pushing claw (5) is pushed through the rod (6) by swinging the lever (8) by the cam (10).

(Problems to be Solved by the Invention) With the rotary type seedling planting apparatus as described above, the pivotal support (9), that is, the vertical axis (H) lowered from the cam shaft to the rod, that is, the push rod (6) swings. The lever or push arm (8) is located. Therefore, the shaft support (7) of the push arm (8) cannot be brought close to the cam shaft (9). In order to smoothly perform the operation of the push rod, the lever ratio [the length of the rocking lever (8) from the shaft support (7) to the connecting fitting (13), the shaft support (7) and the rocking lever (8) Ratio to the end on the contact side of the cam (10)] inevitably increases the length of the push arm, which makes the planted nail case longer and other planted nail cases. The rice transplanter has an outer shape that easily interferes with rotation in the planting direction. Also, in Japanese Patent Application No. 59-101475, the push arm between the axial center line of the push rod and the straight line passing through the cam shaft parallel to the push rod exceeds this interval, so the planted claw case It cannot be shortened.
Therefore, the rice transplanter has a case outer shape that easily interferes with other planting claw cases by rotation during planting.

(Means for Solving the Problem) Therefore, a technical object of the present invention is to obtain a rice transplanter in which the planting claw case and the planting claw do not interfere with each other when the planting claw case rotates in the planting direction. According to the technical means of the present invention, in a planting device in which a plurality of planting claw cases are attached to a drive case, the push arm and the rotating shaft of the push arm are moved from the cam shaft to the push rod shaft center line. The cam is arranged so as to be displaced to the push rod side from the vertical line that descends, and the cam between the push rod shaft center line and the cam shaft diameter parallel band line passing through the cam shaft parallel to the push rod shaft center line. A configuration in which the push arm shaft is positioned so as not to overlap the diametrical width band line of the cam shaft passing through the shaft and the diametrical width band line of the rotating shaft of the push arm passing through the rotating shaft of the push arm parallel to the cam shaft. Take ing.

(Advantages of the Invention) According to this technical means, the push arm and the rotation axis of the push arm are arranged so as to be located on the push rod side with respect to the perpendicular line drawn from the cam shaft to the push rod shaft center line. And between the push rod shaft center line and the cam shaft diametric width band line passing through the cam shaft parallel thereto, the cam shaft dia band width line passing through the cam shaft and the push arm parallel thereto. Since the rotation axis of the push arm is positioned so as not to overlap the diametrical width band line of the rotation axis of the push arm passing through the rotation axis of
The rotating shaft can be provided closer to the push rod shaft center line, which has the effect of shortening the overall length of the push arm. In this way, the distance between the push rod shaft center line and the cam shaft center line can be shortened. By doing so, it is possible to shorten the exterior part of the push arm of the planting claw case. Therefore, in a planting device in which a plurality of planting claw cases are attached to the drive case, a plurality of planting claw cases on the drive case are attached to each other. In the rotation in the planting direction, the planting claw and the planting claw case do not interfere with each other, and the planting claw case can be made compact.

(Embodiment) First, the rice transplanter as a whole after transplanting will be described.

Reference numeral (1) shown in FIGS. 19 and 20 denotes a passenger vehicle body, and a planting portion (3) is connected to a rear portion of the passenger vehicle body (1) via a lift mechanism (2).

The passenger vehicle (1) has a mission case (5) attached to the rear of the vehicle body frame (4), an engine (6) mounted on the vehicle body frame (4), and front wheels (7) below it.

Further, there are transmission cases (8) directed from the left and right sides of the mission case (5) to the rear.

At the rear end of the transmission case (8) is a rear wheel (9). (1
0) is a driver's seat, (11) is a footstep, and (12) is a traveling steering wheel.

A top link (14) and a lower link (15) are attached to the lift mechanism (2), and the links (14) and (15) are swung by the expansion and contraction of a hydraulic cylinder (not shown) to raise and lower the planting part (3). It is supposed to do.

In the figure, (16) shows a fitting for the link of the hydraulic cylinder.

The link frame is also attached to the transmission case (8) by its attachment fitting (16).

The planting section (3) comprises a seedling table (18), a float (19) and a transmission case (20).

(21) is a marker and (22) is a float elevating lever.

The rotary planting claw used in the seedling planting device of the rice transplanter described above will be described in more detail below.

1 to 13 relate to a forced extrusion claw device, and the transmission shaft shown in FIG. 1, that is, the input shaft (23) is rotatable with respect to the planted transmission case (20). .

However, there is an upper stop device that disengages the line stopping unit clutch at one or more places per one rotation.

 A sun gear (24) is loosely fitted on the transmission shaft (23).

However, it is fixed to the planted transmission case (20) through the sun gear phase adjusting member (25).

The sun gear phase adjusting member (25) has an end boss portion (25b) of a fan-shaped arm (25a) as shown in FIGS. 10 and 11.
There is a kerf (25c) on the sun gear (24a), which matches the kerf (25c) on the sun gear (24) as shown in FIG. Change the position and fit the key (56) over these cut grooves (25c) (24a), and insert the bolt (27) into the arc-shaped slit groove (26) in the fan-shaped part of the arm (25a) to plant the transmission case. Planted transmission case (20) for sun gear (24) by fixing to (20)
The relative position with respect to can be changed.

Although a plurality of cut grooves (25c) are shown in the figure, they may be provided at one place because they are in phase with each other. Transmission shaft (23)
A hollow split drive case (28) is mounted on the end of the drive shaft (28), and the drive case (28) is positionally adjusted in relation to the upper stop device of the planting pawl to adjust the transmission shaft. It is fixed to the transmission shaft (23) by screwing a bolt (29) to the end of (23). For this position adjustment, the end of the transmission shaft (23) is formed into a square shape, which is fitted in the square hole (28a) of the drive case (28).

The drive case (28) as a rotating body has a sun gear (2
An intermediate gear (30) (30) that meshes with the sun gear (24) and has the same number of teeth as the sun gear (24) is rotatably provided via an intermediate shaft (31). A sun gear (24), which always meshes with the intermediate gear (30) on the intermediate shaft (31), and a planetary gear (33) having the same number of teeth as that of the sun gear (24) are fitted onto the upper surface of the second shaft 32) via a supporting member described later. .

The sun gear (24), the intermediate gear (30), and the planetary gear (33) are gears that are eccentric (e) from the center of rotation as shown in FIG.

The cam shaft (32) is also attached to the drive case (28) via the position adjusting member (34) shown in FIGS. 1, 7, 12, and 13.

The position adjusting member (34) is attached to the cam shaft (32) and fixed to the drive case (28) with bolts (35). Then, the bolt (35) is inserted into the slit groove (36) provided in the member (34) so that the member (34) can rotate. (9th
(Figs. 10, 10 and 11) Also, a support member (37) is fitted to the cam shaft (32) as shown in Figs. 1 and 7, and a planting claw case is attached to the support member (37). (38) and the planetary gear (33) are fixed.

By adjusting the position adjusting member (34) as described above, the ejection timing of the ejection claw is changed.

(39) is a bolt for fixing the planting claw case (38) to the support member (37), which is inserted into the bolt hole (60) of the planting claw case, and (40) is the support member (37) and the cam shaft. It is a bearing interposed between (32).

The cam shaft (32) is provided with a cam (41), and the push arm (42) contacting the cam (41) drives a push rod described later via a linkage shaft.
At its intersection there is a spring (43), in contrast to a cushion rubber (44).

Therefore the push arm (42) is spring (43)
Energized with, cushion rubber (44) with planted case (38)
Buffered against.

The structure of the push-out claw portion will now be described in more detail with reference to FIGS. 3 to 6. The push arm (42) is pivotally supported by the shaft (48), and the end portion (42a) is at the cam (41). When the cam (41) rotates, the cam (41) rotates about the shaft (48).

The top surface of the tip end (42b) of the push arm (42) contacts the washer (49) having a cross section, and the spring (43) is attached to the washer (49).
Are in contact.

A cushion rubber (44) is attached to the tip of the push arm (42).

Specifically, at the tip of the push arm (42), a cushion rubber (44) is fixed to a link shaft (57) that is inserted in a direction perpendicular to the push arm (42), and the push shaft (57) is connected to the relay metal fitting (61). ), The push rod (47) is activated.

(45) is a planting claw, (46) is a pushing claw, and the pushing claw (46) is finally pushed by a push rod (47) driven by a push arm (42).

When the drive case (28) as a rotating body rotates in the direction of arrow A by the transmission shaft (23), which is the rotating shaft, in the direction of arrow A as shown in Fig. 15, it cannot rotate with respect to the planted transmission case (20). The intermediate gear (30) meshing with the sun gear (24) rotates in the direction of arrow B by the same rotation angle as the rotation angle of the rotation of the drive case (28). The planted pawl case support member (37) that is interlocked with the intermediate gear (30) through the planetary gear (33) causes the intermediate gear (30) to rotate, and thus the arrow C
Direction, that is, it rotates in the direction opposite to the rotation direction of the drive case (28), so that the planting claw case (38) as a planting rod rotates around the drive shaft (23) in a state of facing the seedling planting stand. During this turning motion, when the side facing the seedling placing table (18) is lowered from the top to the bottom during this turning movement, the tip of the planting claw (45) is placed on the seedling placing table (18). After splitting only one seedling from the seedling mat, it is planted in the field scene at the lower limit of its descending, and thereafter it rises from the field scene.
The extruding claws (46) extrude the seedlings when planting, so the seedlings are
5) leave.

Further, as shown in FIG. 15, since the sun gear (24), the intermediate gear (30), and the planetary gear (33) are all eccentric gears eccentric by an amount e, the arrow A of the drive case (28) is shown. The support member (37) revolves along with the rotation in the direction, and the rotation of the support member (37) itself in the direction C is accompanied by the rotation of the support member (37) in one rotation of the eccentric gears (24) (30), (30) (33). ) The rotation speed of the drive case (28) becomes faster or slower than the rotation speed of the drive case (28) due to the difference in the engagement pitch radius with respect to the rotation axis in each engagement. Therefore, the planted claw case (3
8) The time when the rotation in the C direction slows down, the time when it descends from the seedling picking position so as to approach the field scene of the planted nail case (38), and on the other hand, the C direction of the planted nail case (38). The planting claw case (38) is set in the field scene so that the time when the rotation of the planting claw (38) becomes faster becomes closer to the upper limit of the planting case (38). When descending to approach, the posture is changed downward by the revolution while rotating slowly in the direction C rather than the rotation of the drive case (28), and when it approaches the rising upper limit after planting, the drive case (28) rotates. As shown in Fig. 16, the closed loop of the movement locus of the claw tip is curved by one side and the other side is an ellipse of deformation closer to a straight line as shown in Fig. It is a closed loop curve.

Furthermore, in FIG. 16, the loop curve (X) is shown by the solid line, the alternate long and short dash line (X ″), and the dotted line (X ′), which shows the case where the phase of the eccentric direction of the sun gear is changed. Is.

That is, as shown in FIG. 15, when the phase position of the sun gear is displaced from the D position to the E position by θ ′ in the direction opposite to the rotation direction of the drive case, the maximum eccentric position is changed and the position of the reference line is changed. The planted locus is shown in Fig. 16 as a dotted line (X ').
As shown by, the movement locus (X) before displacement of the movement locus of the planting nail is shifted to (X ′).

Further, when the phase position of the sun gear is displaced from the D position to the F position in the same direction as the rotation direction of the drive case by an angle (θ ″), the locus of the planting claw moves as shown by the one-dot chain line. It shifts to the movement trajectory (X ″) before displacement.

The change in the movement locus as described above can control the seedling removal amount. The X ″ position is when the seedling removal amount is small, and the X ′ position is when the seedling removal amount is large.

By the way, as shown in FIG. 14, the push arm rotating shaft (48) is positioned between the push rod shaft center line (N) and the straight line (M) passing through the cam shaft (32) parallel thereto. At the same time, the push rod (4) is moved from the cam shaft (32) to the push rod shaft center line (N) by pulling down the push arm (42) and the rotary shaft (48) of the push arm from the vertical line (H).
The push arm (42) can be shortened by arranging it so that it is displaced toward the tip side of 7), and the rotation axis (48) of the push arm is changed to the cam shaft (32).
It can be provided closer to the push arm, and the entire length of the push arm can be shortened. Therefore, the planting claw case (38) can be formed short, and the planting claw cases do not interfere with each other in rotation in the planting direction.

By the way, in the locus of the tip of the planting claw (45), the place where the preceding planting claw case (38) and the claw (45) of the planting claw case (38) coming from behind easily interfere with each other are shown in FIG. 4A is indicated by a circular imaginary line shown in FIG. And the point (a) where it is easy to interfere with the locus of the planting claw is the third.
If they move in the Y direction in the figure, they will easily interfere with each other.

The present invention relates to a planting device in which a plurality of planting claw cases (38) are attached to a drive case (28), and includes a preceding planting claw case (38) and a planting claw case (38) coming from behind. Since it is intended to provide a compact planting claw case that prevents interference with the planting claw (45), as shown in FIG. 14, the push rod shaft center line (N) is provided.
The rotary shaft (48) of the push arm between the straight line (M) passing through the cam shaft (32) and the strip line of the diameter width of the cam shaft passing through the cam shaft (32). The push arm pivot shaft (48) parallel to the belt and the belt of the diameter width of the push arm so that they do not overlap each other.
2) and push arm rotation axis (48) to cam axis (32)
Perpendicular line (H) lowered from the shaft center line of the push rod (N)
The push rod (47) is arranged so as to be more eccentric to the tip end side, whereby the rotation shaft (48) of the push arm can be provided closer to the cam shaft (32), and the push rod (47) can be provided. In order to make the operation of (47) smooth, its rotating shaft (4
8) Push arm (42) to push rod (47)
Despite the fact that the ratio of the length from the rotation shaft (48) to the tip portion (42a) of the push arm (42) can be made large, the push arm The overall length can be shortened.

This means that the distance (S) from the straight line (M) parallel to the axial center line (N) of the push rod (47) passing through the cam shaft (32) in FIG. 3 to the push rod axial center line (N) is small. Therefore, the rotary shaft (48) of the push arm (42) is located between the push rod shaft center line (N) and the straight line (M) passing through the cam shaft (32) parallel to the push rod shaft center line (N). In addition, the rotation shaft (48) is located closer to the tip end of the push rod (47) than the perpendicular line (H) (Fig. 14) drawn from the cam shaft (32) to the push rod shaft center line (N). Together, the planting claw case (38) can be made compact, and interference between the planting claw case (38) and the planting claw (45) of the planting claw case (38) coming from behind is prevented. You can

In short, the push arm and the rotation axis of the push arm are arranged so as to be displaced to the push rod side from the perpendicular line drawn from the cam shaft to the push rod shaft center line, and the push rod shaft center line and this Rotation of a push arm passing through a camshaft diameter width band line passing through the parallel cam shaft and a cam shaft diameter width band line passing through the cam shaft and the push arm rotation shaft parallel thereto. By arranging the rotation axis of the push arm so that it does not overlap the band width of the shaft diameter, the push arm can be shortened and the rotation axis of the push arm can be located closer to the center line of the push rod axis. Since it can be provided and the entire length of the push arm can be shortened, the distance between the push rod axis and the cam axis can be shortened. Since the outer part of the arm can be made short, in a planting device in which a plurality of planting claw cases are attached to the drive case, the plurality of planting claw cases on the drive case interfere with each other in rotation in the planting direction. There is no.

In addition, in order to secure the movement amount (L) of the push rod (47) shown in FIG.
As shown in Figure (a), the push arm (42) axis (48
The lever ratio R ₁ / R between the turning radius R ₁ of the linking shaft (57) centered on a) and the turning radius R ₂ from the shaft center (48a) of the end (42a) of the push arm (42) _It is necessary to make ₂ large. In order to do this, in the present invention, as shown in FIG. 14, the rotary shaft (48) of the push arm and the push arm (42) are
It is deviated from the perpendicular line H from the cam shaft (32) to the push rod shaft center line (N) toward the tip end on the push rod (47) side, and the rotary shaft (48) of the push arm is moved to the cam shaft (32). ) It is provided nearer.

In the embodiment of the present invention, the planetary gear device is shown, but the transmission in the drive case may be performed by chain transmission using an eccentric sprocket and a chain.

[Brief description of drawings]

FIG. 1 is a plan view of a section for a forced extrusion claw. FIG. 2 is a side view of the same as above. FIG. 3 is a partially cut side view of a planted claw case of the present invention for a forced extrusion claw. Is a cutaway plan view of the planted claw case for the forced extrusion claw, a front view and a side view of the relay fitting, and a front view and a side view of the cushion rubber. FIG. 5 is a side view of the planted claw case for the forced extrusion. (A) to (d) are the same as the above, partially cut side view and washer plan view, front view and side view. FIG. 7 is an enlarged cutaway view of the device. FIG. 8 is a perspective view of the sun gear part. Rear view of the pushing claw Fig. 10 is a plan view of the sun gear phase adjusting member Fig. 11 is a sectional view of the same as above Fig. 12 is a plan view of the camshaft phase adjusting member Fig. 13 is a sectional view of the same as above Fig. 14 Cutaway view of the proposed device Fig. 15 and 16 are explanatory views showing the operating state of the gears of the drive case. Fig. 17 and 18 are cutting of the conventional planted claw case. Plane view and sectional side view 19 and 20 figure is a front view and a plan view of the rice planting machine. (18) …… Seedling stand (19) …… Float (20) …… Transmission case with plant (23) …… Transmission shaft (24) …… Sun gear (25) …… Sun gear phase adjustment member (28) ...... Drive case (30) …… Intermediate gear (32) …… Cam shaft (33) …… Planet gear (34) …… Cam shaft phase adjustment member (37) …… Plant claw case support member (41)… … Cam (42) …… Push arm (45) (46) …… Plant claw (47) …… Push rod (48) …… Push arm rotation axis (N) …… Push rod axis (M) ) …… A straight line that feeds the cam shaft parallel to the push rod shaft center line (H) …… A perpendicular line that is lowered from the cam shaft to the push rod shaft center line.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Tokizo Yuzawa, 341, Inadera, Amagasaki City, Hyogo Pref., Kanzaki High-grade Machinery Works Co., Ltd. (56)

Claims (1)

[Claims] 1. A planting device in which a plurality of planting claw cases are attached to a drive case, wherein a push arm and a rotating shaft of the push arm are closer to the push rod than a perpendicular line extending from the cam shaft to the push rod shaft center line. The diametrical width of the cam shaft passing through the cam shaft between the push rod shaft center line and the cam shaft diameter diametrical band passing through the cam shaft parallel to the push rod shaft center line. The rotation axis of the push arm is positioned so as not to overlap the strip line of the above and the strip line of the diameter width of the rotation axis of the push arm passing through the rotation axis of the push arm parallel to this. A planting claw case that prevents interference when planting a rice transplanter.