JPS6225912A - Multi-row rice planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a multi-row rice transplanter for dividing seedlings one by one from a seedling mat on a seedling stand and then planting the seedlings in a field. It is.

(Prior art) Conventionally, the pivot shafts of the crank arm and planting arm were extended,
A device in which another planting arm is pivotally attached to this extension part and a plurality of planting arms are integrally connected so that the planting claws of the plurality of planting arms can operate simultaneously is disclosed in Japanese Patent Laid-Open No. 53-111. 10
It is known as Publication No. 7912.

(Problem to be solved by the invention) In the conventional method as described above, the movement of the main planting arm can be linked to other planting arms, so it is possible to increase or decrease the number of planting rows. This makes it possible to transplant rice with an efficient number of planting rows that match the field conditions.

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

The rotary set has a structure that does not allow the link type to be applied as is, and has disadvantages in that a gear case is required for each row, resulting in high cost and weight.

(Means for Solving the Problems) Therefore, the technical problem of the present invention is to provide a rice transplanter that can perform multi-row planting with a small number of rotary cases, and to solve this technical problem. The technical means of the present invention is that, in a device having a rotary planting claw, a plurality of planting claw cases can be interlocked and connected to each other, and these can be connected and driven to a rotary case with an M star gear mechanism. This is how it was done.

(Effects of the Invention) According to this technical means, multiple planting claw cases can be driven with a small number of rotary cases to perform multi-row planting, thereby significantly reducing the overall cost and weight.

In addition, the sun gear can be adjusted at one location, the amount of seedlings taken can be easily adjusted, and planetary motion can be transmitted with a simple structure that only connects the planting pot and one claw casing.

Furthermore, since the number of transmission systems is small, only a frame is required on one side, and the entire system can be made more sophisticated and transmission loss is small.

In addition, there are various other advantages such as higher strength than conventional pipes connected only by shafts and no need for oil sealing members at the pipe joints.

(Example) The embodiments shown in the drawings will be described below.

(1) shown in Fig. 5 is a passenger car body, and this passenger car body (
A planting part (3) is connected to the rear part of the plant 1) via a lift mechanism (2). The passenger vehicle body (1) has a transmission case (5) attached to the rear of the vehicle body frame (4), and the first and second engines (6) of the vehicle body frame (4) are mounted.
Below that is the front wheel (7).

Further, there are transmission cases (8) extending rearward from both left and right sides of the transmission case (5).

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

(10) is the driver's seat, (11) is the footrest, (12)
is the running handle.

The lift mechanism (2) is equipped with a 1-soplinter (14) and a lower link (15), and each link (14) is moved by the expansion and contraction of a hydraulic cylinder (not shown).
(+5) is swung to raise and lower the 41h attachment part (3).

(16) in the figure shows the attachment for the link of the hydraulic cylinder.
j Shows metal fittings.

The link frame also attaches to the transmission case (8) with its mounting bracket.
There are 8 holes attached to it.

The planting section (3) consists of a seedling stand (1B), a float (19), and a transmission case (20).

(21) is a marker, and (22) is a float lift lever.

A device having an 11-tally planting claw used in a seedling planting device of a rice transplanter like I-hi is as follows.

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

A sun gear (24) is loosely fitted onto the transmission shaft (23). However, it is fixed to the planting transmission case (20) via the sun gear phase adjustment member (25).

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

A hollow two-split rotary case (28) is mounted on the end of the input shaft (23), and is fixed to the input shaft (23) with bolts (29).

The rotary case (28) has an intermediate gear (30) that meshes with the sun gear (24) and has the same number of teeth as the sun gear (24).
(30) is rotatably provided via the intermediate shaft (31), and is constantly meshed with the intermediate gear (3Q,) on the intermediate shaft (3I) on the camshaft (32) serving as the planting shaft. A planet gear (33) having the same number of teeth as the sun gear (24) is fitted through a support member which will be described later. These sun gears (
24), intermediate gear (30), and planetary gear (33) are the third
As shown in the figure, the gear is eccentric by an appropriate dimension (e) from the center of rotation.

The camshaft is also attached to the rotary case (2B) via a position adjustment member (34).

Further, a support member (37) is fitted to the camshaft (32),
A planting claw case (38) and the aforementioned planetary gear (33) are fixed to this support member (37).

Then, by adjusting the position adjustment member (34), the extrusion timing of the extrusion claw (47) is changed.

(39) is a bolt that fixes the planting claw case (38) to the support member (37), and is inserted into the bolt hole of the planting claw case (38), and (40) is the bolt that fixes the planting claw case (38) to the support member (37). (
32) is a bearing interposed between the

A cam (41) is provided on the cam shaft (32), and a bushing arm (42) in contact with this cam drives a bushing rod (36) via an intermediate shaft (27). There is a spring (43), and in contrast there is a cushion rubber (44).

Therefore, the bushing arm (42) is attached to the spring (42).
3), and cushioned against the planting nail case (38) by the cushion rubber (44).

The bushing arm (42) is also pivoted on a shaft (45),
The end contacts the cam (41).

(46) is a planting claw, and (47) is the aforementioned extrusion claw, which is pushed out by the bushing rod (36) driven by the bushing arm (42).

Now, the rotary case (2B) as a rotating body is moved by the input shaft (23), which is the rotating shaft, as shown by the arrow A in FIG.
When rotating in the direction, relative to the planting transmission case (20),
An intermediate gear (30) meshes with a non-rotatable sun gear (24).
) rotates in the direction of arrow B by the same rotation angle as the rotation angle of the rotary case (28).

The planting claw case support member (37) interlocks with this intermediate gear (30) via a planetary gear (33).
Due to the rotation of the rotary case (2
Since it rotates in the opposite direction to the rotation direction of 8), the planting claw case (38), which serves as a rod, rotates around the drive shaft (23) while facing the direction of the seedling stand. Become,
During this turning movement, when descending from top to bottom on the side facing the seedling platform (18), the tip of the planting claw (45) lifts the seedlings from the seedling cloak on the seedling platform (18). After dividing only the plant, it is planted on the field at the lower limit of its descent, and after that it rises above the field, and at the time of planting, extruded claws (4
7) pushes out the seedling, so the seedling separates from the planting claw (46).

By the way, as shown in FIG. 3, the sun gear (24), intermediate gear (30), and planet gear (33) are all eccentric gears that are eccentric by an amount e, so the rotary case (28)
) rotates in the direction of arrow A, the support member (37) revolves, and the accompanying rotation of the support member (37) itself in the direction of arrow C causes the eccentric gear (24) (3
0), (30), and (33) are configured so that the rotation speed of the rotary case (28) becomes faster or slower depending on the difference in the engagement pinch radius with respect to the rotation axis in each engagement.

Therefore, the time when the rotation of the planting claw case (38) in the C direction becomes slower than the rotation of the rotary case (28) is
This corresponds to the period when the planting claw case (38) descends from the seedling picking position to approach the field scene, and on the other hand, the period when the planting claw case (38) rises from the planting device so as to approach the upper limit of the rise. By setting this so that each planting claw case (38) lags behind the rotation of the rotary case (28) in the C direction when descending to approach the field, it automatically rotates slowly and maintains its posture by revolution. turn downwards,
When the rotary case (28) rises toward the upper limit after planting, it moves a little faster in the C direction than the rotation of the rotary case (28), rotates on its own, and changes its posture, so the movement trajectory of the tip of the claw is as shown in Figure 4. The closed loop curve is more curved on one side, and the other side is an oblique elliptical closed loop curve that is closer to a straight line.

Also, as shown in Figure 3, if the phase position of the sun gear is shifted from position D to position E by θ° in the direction opposite to the rotational direction of the rotary case, the maximum eccentricity position changes, so the position of the reference line changes. As shown by the dotted line in Figure 4, the movement trajectory of the planting claw is the interlocking trajectory before displacement (
X) shifts to (X゛).

Also, when the phase position of the sun gear is shifted from the D position to the F position by an angle (θ") in the same direction as the rotation direction of the rotary case, the planting locus is the movement locus of the planting claw as shown by the dashed line. is shifted to the motion trajectory (X'') before displacement.

The above-mentioned change in the movement locus allows the amount of seedlings to be taken out to be adjusted, and the X'' position is when the amount of seedlings taken out is small, and the X position is when the number of seedlings taken out is large.

The present invention is a II planting machine that uses rotary planting claws such as 1-to-1 rotary planting claws, in which the planting claw cases are interlocked and connected to each other, and these are connected to a tally case with a planetary gear mechanism. It is designed to be driven by

Specifically, 17-tally cases (28) are installed on both sides of the transmission base (20), and this 1-tally case (28) and the planting case (38) corresponding to the first G row are Although it is connected in the manner described above, the case with ti & in row G (3
8) and the planting claw case (38) in row 0 are connected to the connecting pipe (4).
8) Connect with (49), + (row planting case (38)
) and one row of planting cases (38) are connected pipes (50)
(51) to connect.

In addition, one row of planting cases (38) and bearing cases (54) are connected by connecting pipes (52) (53), and a support shaft is provided in the bearing case (54) portion corresponding to the sun gear (24). (55) is extended from the fuselage and the bearing (57) is mounted on the support frame (57).
58). And the camshaft (
32) extends through and supports the inside of these connecting pipes. However, the camshaft (32) is attached to the bearing case (54).
) via the position adjustment member (34) is the same as the rotary case on the planting transmission case (20) side.

Also, only the camshaft (32) may be fixed to the case (54) using the pole l-(62) as shown in FIG. 1 (11), and the pipe (52) ( 53) supports the camshaft (32) via a bearing (63).

The above description has been made with the transmission case (20) in the center and the planting claw cases (38) on the left and right sides, but the bearing case (54) in the center is made only of bearings.
The planting claw case (38) may be driven by disposing transmission cases (20) (20) on both sides.

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

The one shown in Figure 7.8 is a modified example of the rotary case and the planting claw case, and the planting claw case itself has a bushing lever (42) mounted on a bushing cam (41) driven by a planetary gear.
The bushing lever (42) itself has a special shape, that is, an anchor shape, and its protrusion (42a) is in contact with the bushing cam (41). It has become. The tip of the bushing lever (42) is the bushing lever holder (60).
The bridge is stopped at (61), and the bushing rod (
36) is constantly biased in the extrusion direction by a bushing spring (62). In the figure, (63) and (64) indicate boots and bushes, respectively.

In the above case, when the bushing lever (42) in the bushing cam (41) allows the force in the pushing direction from the bushing spring (62), the bushing rod (36) protrudes and engages the planting claw (
The seedlings are pushed out from the cam (46), and the seedlings are pushed out from the cam (46).
1) causes the lever (42) to retract the bushing rod (36) against the spring (62).

To connect the planting claw cases (36), a connecting pipe is used as described above, so (71) in the figure indicates the part to which the flange portion of the connecting pipe is attached.

What is shown in Figure 10.11 is a modified example of the sun gear phase adjustment member, in which the sun gear phase adjustment lever (66) is directly connected to the boss (67) of the sun gear, and the sun gear phase adjustment lever (66) is directly connected to the boss (67) of the sun gear.
6) back and forth and place the lock lever (
66) of the lock plate (65) - m (65a)
By engaging with the sun gear (24), the relative position of the sun gear (24) with respect to the planting claw case (28) is changed.

This embodiment is illustrated with rotary cases (28) (28) on both sides of the transmission case (20), so the sun gear phase adjusting members as shown below are arranged relative to each other on the left and right. has been done.

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

In the figure, the gear train sun gear (24a), intermediate gear (30a), and planetary gear (33a) on the left are concentric gears for eliminating backlash, and the gear train sun gear (24) on the right, Intermediate gear (30), planetary gear (33)
is an eccentric gear for driving.

A friction plate (70) pressed by a spring (69) supported by the gear (33) presses the gear (33a). The gear (33a) rotates at a constant speed. However, the gear (33) is attached to the support member (37)
The gear (33a) is a loose fit.

When the two-series gears as described above are used, the bank lash of the gears is adjusted and planting can be performed accurately.

In any case, the present invention is characterized in that a plurality of planting nail cases are interlocked with each other and connected to a rotary case with a planetary gear mechanism, and has the following features. It has characteristics.

The sun gear can be adjusted in one place, the amount of seedlings taken can be easily adjusted, and planetary motion can be transmitted with a simple structure that only connects the planting claw cases.

In addition, the transmission system can be reduced, and only a frame is required on one side, resulting in overall weight reduction and small transmission loss.

In addition, it has various advantages in that it has higher strength than conventional pipes connected only by shafts, and there is no need for an oil seal member at the pipe connection part.

[Brief explanation of drawings]

Figures 1 (a) and (b) are a partially cutaway rear view and partial view of the device of the present invention seen from above. Figure 2 is a side view showing the relationship between the planting case and the rotary case. Figures 3.4 are Figure 5.6 is a front view and plan view of the rice transplanter. Figure 7 is a side view showing the relationship between the planting case and the rotary case, which is different from Figure 2. Figure 8 is a side view showing the relationship between the rice transplanter and the rotary case. FIG. 9 is a cross-sectional view of the claw case; FIG. 11 is a plan view of a different sun gear phase adjustment device; and FIG. 12 is a rear view of a modified rotary case. (18)...Seedling stand (19)...Float (20)...Planting transmission case (23)...Input shaft (24)...Sun gear (25) ...Sun gear phase adjustment member (28)...
・Rotary case (30) ... Intermediate gear (32) ... Camshaft (33) ... Planetary gear (34) ... Camshaft phase adjustment member (37) ... Plant Claw case support member (38)・
... Planting nail case (46) ... Planting nail

Claims (1)

[Claims] In a device having a rotary planting claw, a plurality of planting claw cases are interlocked and connected to each other so that they can be connected and driven by a rotary case with a planetary gear mechanism. Ueda transplanter.