JPH0757128B2 - Tajo rice transplanter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a multi-row rice transplanter for splitting seedlings from a seedling mat on a seedling table and planting the seedlings in a field. .

(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 can operate simultaneously. -1079
Known as No. 12 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 a planetary gear mechanism is required for each line, resulting in high cost, and the planetary gear case is directly rotated by the drive shaft. Therefore, the sun gear and the shaft portion have a double or triple structure, and the planetary gear shaft also has a double structure, which complicates the structure and may cause difficulty in sealing and insufficient strength.

(Means for Solving Problems) Therefore, the technical problem of the present invention is to provide a rice transplanter capable of producing multiple values in one rotary case, and the technical problem of the present invention for solving the technical problem. The target means
A rotary case that has a planetary gear mechanism consisting of an intermediate gear and a planetary gear that sequentially meshes with the sun gear, which is fixed to the fuselage side, and a drive arm that rotates with a drive shaft that faces the rotary case. A plurality of planting claw cases are arranged between the and, and these planting claw cases are supported in the planting claw case near the rotary case and are fixed to the drive arm, and the bearing shaft It is configured to be rotatably supported by a fitted connecting pipe, and a planetary gear shaft fixed to a planetary gear is connected to the bearing-attached claw case near the rotary case.

(Advantageous Effects of the Invention) According to this technical means, the rotary case that houses the planetary gear mechanism is rotated by the drive shaft via the drive arm by the support shaft and the connecting pipe fitted thereto. Therefore, on the drive side, it does not require a complicated structure such as the sun gear, intermediate gear, and planetary gear shaft of the planetary gear mechanism, and has a simple structure, which is advantageous in terms of strength and sealing. Therefore, the cost can be reduced.

In addition, since the drive side by the conductive chain is only the drive arm, not only space can be balanced, but also since the seedling amount adjustment arm can be made long, it is possible to finely adjust the angle, which is advantageous in terms of accuracy. Is.

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

In FIG. 10, (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). (Ten)
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 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 section (3) comprises a seedling stand (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 FIGS. 6 and 7, 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 (25).
It is fixed to the planted transmission case (20) via.

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 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 (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 (4) 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, as shown in FIG. 8, the rotary case (28) as a rotating body is rotated by the input shaft (23), which is its rotating shaft, as shown by the 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 support member (37) having the planted claw case (38) interlocking with the intermediate gear (30) via the planetary gear (33) is fixed to the support member (37) by the rotation of the intermediate gear (30) in the arrow C direction, that is, the rotary case ( Since it rotates in the direction opposite to the rotation direction of 28), the planting claw case (38) as a planting rod is supposed to pivot around the drive shaft (23) in a posture facing the seedling mounting table. When the side facing the seedling placing table (18) descends from top to bottom during this turning motion, the seedling mats on the seedling placing table (18) are moved from the seedling mat at the tip of the planting claw (46). After splitting only one strain, it is planted in the field scene at the lower limit of its descending and then rises from the field scene.
7) pushes out the seedlings, so they separate from the planting claws (46).

By the way, as shown in FIG. 8, since the sun gear (24), the intermediate gear (30), and the planetary gear (33) are all eccentric gears eccentric by an e amount, the arrow A of the rotary case (28) is used. The support member (37) moves along with the input shaft (2
3) revolves around the center, and the rotation of the supporting member (37) itself in the C direction is accompanied by the eccentric gear (2
4) It is 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 of (30) and (30) (33). There is.

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 that the rotation of the planting claw case (38) in the C direction becomes faster, and the timing when the planting claw case (38) rises to approach the upper limit of the planting, When the claw case (38) descends so as to approach the field scene, the posture is changed downward by the revolution while slowly rotating on its own in the direction C rather than the rotation of the rotary case (28), and the upper limit is reached after planting. When climbing closer, add C more than the rotation of the rotary case (28).
I will go a little faster in the direction and change my posture by rotating on my own,
As shown in FIG. 9, the closed loop of the movement locus of the tip of the planting claw (46) is curved by one side, and the other side is a deformed elliptical closed loop curve closer to a straight line.

Further, as shown in FIG. 8, when the phase position of the sun gear is changed from the D 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. The locus of planting, as shown by the dotted line in FIG. 9, is such that the locus of movement of the planting claw (46) is displaced from the locus (X) before displacement 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 rotary case by an angle (θ ″), the locus of planting moves the locus of the planting claw as shown by the alternate long and short dash line. The previous motion locus (X) shifts to (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.

The present invention relates to an improvement of a rice transplanter having a rotary case as described above.

FIG. 1 shows it, and the intermediate shaft (51) of the lateral feed gear case (50) of the seedling mounting table (18) to the sprocket (52).
The drive shaft (55) is driven through (53) and the chain (54), and conduction is carried out by a chain (57) stretched between the sprocket (56) of the drive shaft (56) and the sprocket (58) of the drive shaft (69). The drive shaft (69) in the chain case (70) is driven.

A drive arm (71) is directly connected to the drive shaft (69), and the drive arm (71) and the rotary case (28) described above.
Bearing shaft (72) between the same rotary case (75)
Is stretched.

The rotary case (75) has a sun gear (77) fitted to the shaft (76), and the intermediate gears (79) and (79) of the intermediate shafts (78) and (78) mesh with the sun gear (77). The planetary gears (81) (81) of the shafts (80) (80) mesh with each other.

The planetary gear shafts (80) (80) of the planetary gears (81) (81) are fixed to the planting claw case (74R) (74R ') on the right end, and the planting on the left end close to the drive arm (71). Claw case (74L)
(74L ') is a bearing shaft (7
It is supported by 2) and has a central planting claw case (74C) (74C ').
Is connected to the left and right planting claw cases (74L) (74L '); (74R), (74R') by connecting pipes (73) (73 '),
And it is supported by the bearing shaft (72). The right end of the drive shaft (72) is supported by the planted claw case (74R) (74R '). The connecting pipes (73) (73 ') are strong against twisting when the planetary gear (81) is rotationally driven by the planetary gear shaft (80).

The seedling taking amount adjusting arm (82) corresponding to the above-mentioned sun gear phase adjusting member (25) is attached to the sun gear shaft (76), and the seedling taking amount adjusting lever (85) is attached via the links (83) (84). The seedling collection amount adjusting lever (8
It is designed to be operated in 5).

In FIG. 5, (86) is a lever fixing metal, and (8)
7) is a turnbuckle that adjusts the link (83).

As shown in FIG. 5, the link (84) is attached to the fixed metal (91) of the connecting links (88) (89) (90) between the float (19) and this machine.

Next, each of the planting claw cases will be described. In FIG. 2, the planting claw case (74) has a fixed claw (92) attached thereto, and the push arm (94) for pushing out the pushing claw (93) is a guide. Reciprocates along (100).

The spring (96) supported in the planting claw case (74) is in contact with the receiving (95) of the push arm (94), and always biases the pushing claw (93) in the pushing direction. There is.

The receiving metal (95) is connected to the connecting plate (97), and the sliding pin (98) provided thereon is in contact with the cam (99) fixed to the support shaft (72).

Therefore, when the planting claw case (74) rotates with respect to the cam (99) of the bearing shaft (72), the connecting plate (97) rotates and the sliding pin (98) of the sliding pin (98) forms the outer shape of the cam (99). When the connecting plate (97) is released from the cam (99) by sliding along the
5) is for being pushed out by the spring (96) and pushing out the pushing claw (93) via the push arm (94).

Thus, the rotation of the drive arm (71) causes the rotary case (75) to rotate via the support shaft (72), and the planting claw case (74) is rotated so that the tip of the fixed claw (92) rotates according to the closed loop curve. It can be moved.

Incidentally, (101) in FIG. 1 is a frame of the main body side which supports the transmission chain case (70) and the sun gear shaft (76).

The drive arm (71) and rotary case (7
5) The bearing shaft (72) is stretched between it and the rotary case (75) can be rotated by the drive arm (71) via the bearing shaft (72), so that the sun gear of the planetary gear mechanism ( 77), the planetary gear shaft (80) is simplified, which is advantageous in strength and sealing.

In addition, since the transmission chain (57) side is only the drive arm (71) and the space is well balanced, the seedling collection amount adjusting arm (82) can be long, which is advantageous in terms of accuracy.

FIG. 12 is a modification of the device of the present invention, in which the planetary gear shaft is thicker than the drive shaft. That is, the planetary gear shaft is 17-20φ
Then the drive shaft is 10φ.

[Brief description of drawings]

Fig. 1 is a partially cut front view showing the main part of the multi-row rice transplanter of the present invention. Fig. 2 is a cut sectional view of a nail case with planting. Figs. 3 and 4 are the cut plan view and the cut side view of the same. Fig. 5 is an explanatory view showing the mounting state of the seedling taking amount adjusting lever. Fig. 6 is a cut front view of the conventional rotary planting claw. Fig. 7 is a side view of the same. Fig. 8 and 9 are operation explanations of the rotary planting claw. FIGS. 10, 10 and 11 are a side view and a plan view of the rice transplanter. FIG. 12 is a modified view of the essential part of the multi-row rice transplanter of the present invention. (70) …… Transmission chain case (71) …… Drive arm (72) …… Bearing shaft (73) …… Connecting pipe (74) (74R) (74R ′) (74L) (74L ′) (74C) ( 74
C ′) …… Planted claw case (75) …… Rotary case (77) …… Sun gear (79) …… Intermediate gear (81) …… Planet gear (92) …… Fixed claw (93) …… Extrusion Claw (94) …… Push rod (95) …… Receiving (96) …… Spring (97) …… Connecting plate (98) …… Sliding pin (99) …… Cam

Claims (1)

[Claims] 1. A rotary case in which a planetary gear mechanism composed of an intermediate gear and a planetary gear, which sequentially meshes with the sun gear fixed to the fuselage side, is installed, and a drive shaft opposite to the rotary case. A plurality of planted claw cases are arranged between the rotary drive arm and the rotary drive arm, and these planted claw cases are supported in the planted claw case near the rotary case and fixed to the drive arm. And a connection pipe fitted to the support shaft so as to be freely rotatable, and a planetary gear shaft fixed to the planetary gear is connected to the planted claw case near the supported rotary case. Tajo rice transplanter.