JPH07106095B2 - 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. 107912
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. Therefore, 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 there is 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 solves the technical problem. The technical means of the present invention provides a rotary case that is rotated by an input shaft around a sun gear fixed to the transmission case side,
In this rotary case, an intermediate gear that sequentially meshes around the sun gear, a planetary gear mechanism consisting of a planetary gear are provided, and one end of a cam shaft in a support member fixed to the planetary gear is attached to the rotary case. While fixing, the other end of the extended cam shaft is supported by the rotary case on the other side with respect to the transmission case, and a plurality of planted claw cases are arranged between the rotary cases at both ends of the cam shaft. These planting claw cases are connected to each other by a connecting pipe fitted on a cam shaft so that they can be driven by a supporting member fixed to the planetary gear.

(Advantages of the Invention) According to this technical means, not only the cost can be reduced because the multiple rows can be planted with a small number of rotary cases, but also the weight can be significantly reduced.

(Example) An example shown in the drawings will be described below.

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 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).

(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). ).

Reference numeral (16) in the figure shows a fitting for the link of the hydraulic cylinder.

The link frame is also attached to the transmission case (8) with its mounting hardware.

The planting part (3) is composed of a seedling planting base (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 the sun gear phase adjustment member (2
It is fixed to the planted transmission case (20) via 5).

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 planetary gear (33) having the same number of teeth as the sun gear (24) which is constantly meshed with the intermediate gear (30) on the intermediate shaft (31) is fitted through a support member described later. The sun gear (24), the intermediate gear (30), and the planetary gear (33) are gears which 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 (33) are fixed to the support member (37).

Then, by adjusting the position adjusting member (34), the ejection timing of the ejection claw (47) 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 of the planting claw case (38), and (40) is the support member (37) and the cam shaft. It is a bearing fitted 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 in contrast to this, there is a cushion rubber (44).

Therefore, the push arm (42) is biased by the spring (43), and the cushion rubber (44) is used for the planting claw case (38).
Buffered against.

The push arm (42) is also pivotally supported by the shaft (45) and its end portion contacts the cam (41). (46) is a planting claw, and (47) is the above-mentioned pushing claw, which is pushed by the push rod (36) driven by the push arm (42).

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

The planting pawl case support member (37) that is interlocked with the intermediate gear (30) via the planetary gear (33) causes the rotation of the intermediate gear (30) to cause an arrow C direction, that is, a direction opposite to the rotation direction of the rotary case (28). Since it rotates to the input shaft (2), the planting claw case (38) as a planting rod is in a state of facing the seedling table.
3) will rotate around the center, and when the side facing the seedling placing table (18) descends from top to bottom during this turning movement, the seedling placing at the tip of the planting claw (46). After splitting only one seedling from the seedling mat on the stand (18), it is planted in the field scene at the lower limit of its descending and then rises from the field scene. The seedling leaves the planting claw (46) as it is pushed out.

By the way, as shown in FIG. 3, since the sun gear (24), the intermediate gear (30), and the planetary gear (33) are all eccentric gears eccentric by the amount e, the direction of arrow A of the rotary case (28). The support member (37) of the planting claw case (38) revolves along with the rotation of the eccentric gear (24) during one rotation of the support member (37) itself.
(30), (30) and (33) are configured to be faster or slower than the rotation speed of the rotary case (28) due to the difference in meshing pitch radius with respect to the rotation axis in each meshing.

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 so as to approach the field scene of the planting claw case (38). By setting the timing so as to correspond to the time when the planting claw case (38) ascends from the planting device so as to approach the upper limit of the planting claw case (38), each planting claw case (38) can be set in the field scene. When descending closer to the rotary case (28) than the rotation of the rotary case (28), the posture is changed downward by the revolution while slowly rotating on its own axis, and when climbing to the upper limit after planting Rotary case (28) As shown in FIG. 4, the closed loop of the movement locus of the nail tip curves one way and the other side is closer to a straight line as shown in FIG. Deformation ellipse And it has a closed-loop curve.

Also, as shown in FIG. 3, when the phase position of the sun gear is displaced from the C position to the E position by θ'in the direction opposite to the rotation direction of the rotary case, the maximum eccentric position is changed and the position of the reference line is changed. As for the locus of planting, as shown by the dotted line in FIG. 4, the locus of movement of the planting claw (X) before displacement is shifted to (X ′).

Further, when the phase position of the sun gear is displaced from the D position to the F position by the angle (θ ″) in the same direction as the rotation direction of the rotary case, the locus of planting moves the locus of the planting claw as shown by the alternate long and short dash line. It shifts to the previous movement trajectory (X ″).

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.

In the present invention having the above-mentioned rotary planting claws, the tip of the cam shaft extended from the rotary case having the planetary gear mechanism is supported by another rotary case, and a plurality of planting claws are provided between the rotary cases. A case is provided and these cases are interlockingly connected with each other by a connecting pipe on the cam shaft. Here, the cam shaft refers to a shaft that drives the push-out pawl with a forced pawl and opens and closes the pawl with a block pawl. In addition to the one with the cam directly attached to the cam, the power to drive the cam indirectly It also refers to a shaft having a transmission mechanism.

Specifically, in FIG. 1, rotary cases (28) are provided on both sides of the transmission case (20), and the rotary case (28) and the planting claw case (38) corresponding to the first row G are in the above-described manner. Although connected, the row G planted claw case (38) and the row H planted claw case (38) are connected pipes (48) (49)
And the H-row planting claw case (38) and the one-row planting claw case (38) are coupled by the coupling pipes (50) (51).

In addition, the one row of planting claw case (38) and the bearing case (54) are connected by the connecting pipes (52) (53), and the rotary case as a bearing case consisting of only the bearing corresponding to the sun gear (24). The support shaft (55) provided in the (54) portion is supported by a support frame (57) extending from the machine body via a bearing (58).

The cam shaft (32) penetrates and supports the inside of these connecting pipes. However, the fact that the camshaft (32) is attached to the rotary case (54) via the position adjusting member (34) means that the rotary case (2) on the planted transmission case (20) side is attached.
Same as in 8). Also, a rotary case (54)
On the other hand, as shown in FIG. 1 (b), only the cam shaft (32) may be fixed to the case with the bolt (62),
Pipe (52) (53) is bearing (63) to camshaft (32)
Support through.

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 sides.
The center is a rotary case (54) made only of bearings, the transmission cases (20) and (20) are arranged on both sides, and the rotary case (28) with a planetary gear mechanism is used for the planted claw case (3).
8) It is also possible to drive.

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

It should be noted that the operator after turning on the planter needs to turn around in order to know the planting state of the seedlings during the work, which is a burden on the operator. Therefore, a video camera is installed at a position where the planted seedlings can be seen, and a monitor (television, etc.) is installed at a position where the operator does not hinder the operation of the rice transplanter.

In FIG. 7, (60) and (61) respectively indicate a camera and a monitor.

With the above-mentioned configuration, the situation of the seedlings can be known without turning around after the work, so that not only the operator's burden is lightened, but also the remaining amount of the seedlings can be seen at a glance. In addition, you can monitor the condition of the seedling stand by attaching a video camera.

[Brief description of drawings]

1 (a) and (b) are a rear view and a partial view of a part of the device of the present invention seen obliquely from above. FIG. 2 is a side view showing the relationship between a planting case and a rotary case. Operational diagram of rotary case Fig.5 and 6 are front view and schematic plan view of rice transplanter. Fig.7 is a plan view of rice transplanter with video camera. (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 member (38)… … Plant claw case (41) …… Cam (46) …… Plant claw (48) (49) (50) (51) (52) (53) …… Connecting pipe (54) …… Rotary with bearing only Case

Claims (1)

[Claims] 1. A planetary gear comprising an intermediate gear and a planetary gear which are sequentially meshed with the sun gear as a center, in which a rotary case which is rotated by an input shaft is provided around a sun gear fixed on the transmission case side. A mechanism is provided, and one end of the cam shaft in the support member fixed to the planetary gear is fixed to the rotary case, and the other extended end of the cam shaft is provided on the other side facing the transmission case. The camshaft is supported by a rotary case, and a plurality of planting claw cases are arranged between the rotary cases at both ends of the camshaft, and the planting claw cases can be driven by a supporting member fixed to the planetary gear. A multi-row transplanter characterized by being connected to each other by a connecting pipe fitted on the top.