JPH0755088B2 - Tajo Ueda planter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a multi-row planter for planting seedlings one by one from a seedling mat on a seedling mounting table and then planting this in a field scene. Is.

(Prior Art) Conventionally, the pivot shafts of the crank arm and the planting arm are extended,
Another planting arm is pivotally attached to this extension and a plurality of planting arms are integrally connected so that the planting claws of the plurality of planting arms operate simultaneously. It is known as the Japanese publication.

(Problems to be Solved by the Invention) In the conventional device as described above, the movement of the main planting arm can be interlocked with another planting arm, so that the number of planting lines can be increased or decreased. It becomes possible, and rice planting work can be performed with an efficient number of planting rows that match the field conditions.

However, the above is a link type, not a rotary type.

The rotary type has a structure in which the link type cannot be applied as it is, and also has a drawback that a gear case is required for each line, resulting in high cost and large weight.

(Means for Solving Problems) Therefore, the technical problem of the present invention is to provide a rice transplanter capable of multi-row planting with a small number of rotary cases, and the technical problem is solved. According to the technical means of the present invention, a sun gear fixed to the transmission case side is provided as a center, an intermediate gear that sequentially meshes with the sun gear and a planetary gear mechanism including a planetary gear are installed, and an input shaft from the transmission case side is provided. A plurality of planted claw cases are arranged between a rotary case that rotates by the rotary case and a bearing case that is mounted on a support shaft opposite to the rotary case. Between the bearing case and the rotary case and the bearing case, a cam shaft that is adjustable and fixed, and a support pipe and a connecting pipe that are fitted to the cam shaft are rotatably supported. The accepted planting claw case on the rotary case side was connected to the above supporting pipe fixed to the planetary gear, and the planting claw case and the bearing case side of the planting claw case were connected by the above connecting pipe. It has a composition.

(Advantageous Effects of the Invention) According to this technical means, in a rotary-type multi-row planter planting machine, a plurality of planting claw cases can be driven with a small number of rotary cases to perform multi-row planting, which greatly reduces the weight. The overall cost can be reduced.

Also, because the sun gear can be adjusted in one place,
The amount of seedlings can be easily adjusted, and the planetary motion can be transmitted to each planted nail case with a simple structure in which a plurality of planted nail cases are connected by a connecting pipe.

Furthermore, since the number of transmission systems is small, only the framework is needed on one side, and the overall weight can be reduced and the transmission loss is small.

In addition, since the connecting pipe is used as compared with the conventional one connected only by the shaft, the strength against twisting is high, and there are various advantages that the pipe connecting portion does not require a seal member for oil.

(Example) Hereinafter, the Example shown in drawing is described.

In FIG. 5, (1) is 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 body (1) has a mission case (5) attached to the rear of the body frame (4),
The engine (6) is mounted on the body frame (4), and the front wheels (7) are below the engine.

Further, there is a transmission case (8) from the left and right sides of the mission case (5) toward the rear.

At the rear end of the transmission case (8) is a rear wheel (9).

(10) is a driver's seat, (11) is a footstep, and (12) is a traveling handle.

A top link (14) and a lower link (15) are attached to the lift mechanism (2), and each link (14) (15) is swung by the expansion and contraction of a rod of a hydraulic cylinder (not shown) so that the planting part ( 3) can be raised and lowered.

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

Link urethane is also a transmission case (8) with its mounting bracket.
Installed on.

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 one having a rotary planting claw used for the above-mentioned rice planting device of the rice transplanter is as follows.

That is, in FIG. 1, the input shaft (23) is rotatable with respect to the planted transmission case (20).

A sun gear (24) is loosely fitted to the input shaft (23). However, the sun gear (24) is fixed to the planted transmission case (20) via the sun gear phase adjusting member (25).

The sun gear phase adjusting member (25) changes the relative position of the sun gear (24) with respect to the planted transmission case (20).

A hollow split rotary case (28) is mounted on the end of the input shaft (23) and is fixed to the input shaft (23) by a bolt (29).

The rotary case (28) meshes with the sun gear (24),
Further, the intermediate gears (30) (30) having the same number of teeth as the sun gear (24) are rotatably provided via the intermediate shaft (31), and the above-mentioned is provided on the cam shaft (32) as a planting shaft. A sun gear (24) that is constantly meshed 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 through a support 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 rotary case (28) via a position adjusting member (34).

A support member (37) is fitted on the cam shaft (32), and the planting claw case (38) and the planetary gear (38) are fixed to the support member (37).

Then, by adjusting the position adjusting member (34), the second
The extrusion timing of the extrusion claw (47) shown in the figure is changed.

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

The cam shaft (32) is provided with a cam (41). The push arm (42) contacting the cam (41) drives the push rod (36) via the intermediate shaft (27). , There is a spring (43) at the intersection and a cushion rubber (44) at the contrast station.

Therefore, the push arm (42) has a spring (43).
With cushion rubber (44)
Buffered against 8).

The push arm (42) is also pivotally supported by the shaft (45), and its end portion contacts the cam (41).

In FIG. 2, (46) is a planting claw, (47) is the push-out claw described above, and is a push rod (36) driven by the push arm (42) via the intermediate shaft (27). Extruded.

Now, as shown in FIG. 3, the rotary case (28) as a rotating body is rotated by the input shaft (23), which is its rotating shaft, as shown by arrow A.
When rotated in the direction, the intermediate gear (30) meshing with the non-rotatable sun gear (24) is the same as the rotation angle of the rotation with the rotation of the rotary case (28) with respect to the planted transmission case (20). Only the rotation angle rotates in the direction of arrow B.

The planting claw case support pipe (37) that is interlocked with the intermediate gear (30) through the planetary gear (33) is in the direction of arrow C due to the rotation of the intermediate gear (30), that is, opposite to the rotation direction of the rotary case (28). Since it rotates in the direction of rotation, the planting claw case (38) as a planting rod turns around the input shaft (23) in a state of being oriented toward the seedling mounting table. When descending the side facing the mounting table (18) from top to bottom, the seedling mounting table (18) is placed at the tip of the planting claw (45).
After splitting only one seedling from the above 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 claw (47) extrudes the seedling at the time of planting, so Separate from the planting claw (46).

By the way, as shown in FIG. 3, since the sun gear (24), the intermediate gear (30), and the planetary gear (33) are both eccentric gears eccentric by the amount e, the arrow A of the rotary case (28) is used. The support pipe (37) revolves with the rotation in the direction,
As a result, the rotation of the support pipe (37) itself in the C direction is
Eccentric gears (24) (30), (30) during one rotation
(33) Rotary case (28) due to the difference in meshing pitch radius with respect to the rotation axis in each meshing.
It is configured to be faster or slower than the rotation speed of.

Therefore, the time when the rotation of the planting claw case (38) in the C direction is delayed relative to the rotation of the rotary case (28) descends from the seedling picking position of the planting claw case (38) so as to approach the field scene. The planting claw case (38) is set to correspond to the time when the planting claw case (38) rises from the planting device of the planting claw case (38) so as to approach the rising upper limit. When descending so as to approach, the rotary case (28) lags behind the rotation of the rotary direction in the C direction and slowly turns around, changing its posture downwards by the revolution, and when ascending to approach the rising upper limit after planting, the rotary case (2
8) A little faster than the rotation in the direction of C, the robot rotates more freely and changes its posture, so as shown in Fig. 4, the closed loop of the movement locus of the tip of the planting claw is curved by one side, and the other is straighter. It is a closed elliptical closed-loop curve near.

Further, as shown in FIG. 3, the phase position of the sun gear (24) is changed to D
When the displacement from the position to the E position by θ'in the direction opposite to the rotation direction of the rotary case, the maximum eccentric position changes, so the position of the reference line is changed and the planting locus is as shown by the dotted line in Fig. 4. , The movement locus (X) before displacement of the planted nail shifts to (X ′).

Also, 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 rotary case by an angle (θ ″), the planting locus is the locus of movement of the planting claw as shown by the one-dot chain line. 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.

According to the present invention, in the rice transplanter having the rotary planting claws as described above, the planting claw cases are interlockingly connected to each other, and they are connected to the rotary case having the planetary gear mechanism to be driven.

Specifically, in FIG. 1, a rotary case (28) is provided on both sides of the transmission case (20) (the right side is omitted), and the rotary case (28) and the planting claw case (38) corresponding to the first G row. Are connected in the manner described above, but the G-row planting claw case (38) and the H-row planting claw case (38) are linked by the connecting pipes (48) (49), and the H-row planting claw is connected. The case (38) and the I-row planting claw case (38) are connected pipes (50) (51)
Connect with.

Further, the I-row planting claw case (38) and the bearing case (54) are connected by connecting pipes (52) (53), and a support provided in the bearing case (54) portion corresponding to the sun gear (24). The shaft (55) is provided so as to extend on the side opposite to the planting claw case (38) and is supported by a support frame (57) via a bearing (58). The cam shaft (32) is connected to these connecting pipes (48), (50), (52);
(49), (51) and (53) are penetrated and supported. However, the cam shaft (32) is attached to the bearing case (54) via the position adjusting member (34), as in the rotary case (28) on the planted transmission case (20) side.
Also, as shown in FIG. 1 (b), only the cam shaft (32) is attached to the bearing case (54) on the bearing case (54) with the bolt (62).
It may be fixed using a connecting pipe (52)
Is supported on the cam shaft (32) via a bearing (63).

In the above description, the transmission case (20) is placed in the center and the planting claw cases (38) are arranged on the left and right. However, the bearing case (54) is made of bearings only at the center, and both sides have The transmission cases (20) (20) may be arranged to drive the planting claw case (38).

In addition, a rear bumper frame may be attached between the support shaft (57) and the transmission case (20).

7 and 8 show a modification of the rotary case (28) and the planting claw case (38), in which the planting claw case (38) itself is driven by a planetary gear (33). ) The push lever (42) is in contact with the push cam (41) of
The push lever (42) itself has a special shape, that is, an anchor shape, and swings around the fulcrum (58), and the protrusion (42a) of the push lever (42) abuts on the fish cam (41). . The tip of the push lever (42) is received by the push lever receivers (60) (61),
The push rod (36) is constantly urged by the push spring (62) in the pushing direction. In the figure, (63) and (64) indicate boots and bushes, respectively.

In the above, when the push lever (42) of the push cam (41) allows the pushing force of the push spring (62) in the pushing direction, the push rod (36) projects to push the seedling from the planting claw (46). In addition, the lever (42) moves the push rod (36) backwards against the spring (62) by the cam (41).

To connect the planting claw cases (38) to each other, the connecting pipe (48) is used in the same manner as described above, and (71) in the figure shows the portion to which the flange portion of the connecting pipe is attached. .

FIGS. 10 and 11 show a modified example of the sun gear phase adjusting member, in which the sun gear phase adjusting lever (66) is directly connected to the sun gear boss (67).
By moving the lever back and forth and engaging the adjustment lever (66) with the lock groove (65a) of the lock plate (65) at a predetermined position, the relative position of the sun gear (24) with respect to the planting claw case (38) is changed. It is supposed to be done.

In this embodiment, since the rotary case (28) (28) is provided on both sides of the transmission case (20), the sun gear phase adjusting member (66) as described above,
(65) are arranged relatively to the left and right.

Further, FIG. 12 shows a so-called two-series gear in which gear systems are arranged in parallel for the rotary case (28) itself.

The gear train on the left side of the figure, the sun gear (24a), the intermediate gear (30
a), the planetary gear (33a) is a concentric gear for backlash, and the right gear train sun gear (24), intermediate gear (30), planetary gear (33) are eccentric gears for driving. belongs to.

And a spring (69) supported by the planetary gears (33)
Presses the friction plate (70) against the gear (33a), and the friction plate (70) causes the gear (33) and the gear (33
a) and are designed to rotate at a constant speed. However, the gear (33) is keyed to the support pipe (37) and the gear (33
a) is a loose fit.

By using the two-series gear as described above, the backlash of the gear can be adjusted and the planting can be performed accurately.

In any case as described above, the present invention is characterized in that a plurality of planted claw cases are interlockingly connected to each other and connected to a rotary case having a planetary gear mechanism. It has an effect.

Since the position of the eccentric sun gear can be adjusted at one place, the seedling amount can be easily adjusted, and the planetary motion can be transmitted to each planting claw case with a simple structure in which the planting claw cases are connected.

Further, since only one frame is required on one side, the number of transmission systems is small, and the overall weight can be reduced and transmission loss is small.

In addition, since the pipe connection is higher than the conventional connection in which only the shaft is connected, the pipe connection has various advantages that the strength against twisting is high and the pipe connection portion does not require a seal member for oil.

[Brief description of drawings]

1 (a) and (b) are a rear view and a partial view of a part of the rice transplanter of the present invention seen obliquely from above, and FIG. 2 is a side view showing the relationship between the planting claw case and the rotary case. Figures 3 and 4 are illustrations of the operating state of the rotary case. Figures 5 and 6 are front and plan views of the rice transplanter. Figure 7 is a side view showing the relationship between the planting claw case and the rotary case, which is different from Figure 2. Fig. 8 is a cutaway side view of the same planted claw case. Fig. 9 is a cross-sectional view of the same. Fig. 10 and 11 are plan views of different sun gear phase adjusters, and rear view. Fig. 12 is a modification of the rotary case. It is an explanatory view shown. (18) …… Seedling stand (19) …… Float (20) …… Planted transmission case (23) …… Input shaft (24) …… Sun gear (25) …… Sun gear phase adjustment member (28) ...... Rotary case (30) …… Intermediate gear (32) …… Cam shaft (33) …… Planet gear (34) …… Cam shaft phase adjustment member (37) …… Plant claw case support pipe (38)… … Planted claw case (46) …… Planted claw (48) (49) (50) (51) (52) (53) …… Connecting pipe (54) …… Rotary case with bearing only

Claims (1)

[Claims] 1. A sun gear fixed to the transmission case side,
A planetary gear mechanism consisting of an intermediate gear and a planetary gear that meshes sequentially with this sun gear is installed, and it is mounted on a rotary case that rotates by an input shaft from the transmission case side, and a support shaft that opposes this rotary case. A plurality of planting claw cases are arranged between the bearing case and the planting claw cases, and the planting claw cases are adjustably fixed to the rotary case and the bearing case between the rotary case and the bearing case. A cam shaft and a support pipe fitted to the cam shaft and a connection pipe are rotatably supported, and the supported planting claw case is connected to the support pipe fixed to the planetary gear. A multi-row Ueda transplanter, wherein the planting claw case and the bearing case side of the planting claw case are connected by the above connecting pipe.